U.S. DEPARTMENT OF THE INTERIOR

U.S. GEOLOGICAL SURVEY

Water- and Air-Quality Monitoring of the Sweetwater

Reservoir Watershed, San Diego County, California—

Phase One Results, Continued, 1999-2001

Data Series 233

In cooperation with the

SWEETWATER AUTHORITY
Cover: Photographs supplied by Michael S. Majewski, U.S. Geological Survey.
Water- and Air-Quality Monitoring of the 

Sweetwater Reservoir Watershed, San 

Diego County, California—Phase One 

Results, Continued, 1999–2001

By Gregory O. Mendez, William T. Foreman, Jagdeep S. Sidhu, and 

Michael S. Majewski

In cooperation with the Sweetwater Authority

Data Series 233

U.S. Department of the Interior

U.S. Geological Survey
U.S. Department of the Interior

Dirk Kempthorne, Secretary

U.S. Geological Survey

Mark D. Myers, Director

U.S. Geological Survey, Reston, Virginia: 2007

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Suggested citation:

Mendez, G.O., Foreman, W.T., Sidhu, J.S., and Majewski, M.S., 2007, Water- and air-quality monitoring of the 

Sweetwater Reservoir watershed, San Diego County, California—Phase one results, continued, 1999–2001: U.S. 

Geological Survey Data Series 233, 270 p.
Contents

Abstract...........................................................................................................................................................1

Introduction.....................................................................................................................................................1

Purpose and Scope .............................................................................................................................3

Study Design...................................................................................................................................................3

Primary Sampling .................................................................................................................................4

Special Studies......................................................................................................................................4

Sampling and Analytical Methods .............................................................................................................4

Water Sampling.....................................................................................................................................4

Air Sampling...........................................................................................................................................4

Special Studies......................................................................................................................................7

Sampling Strategy and Data ........................................................................................................................8

Water Sampling.....................................................................................................................................8

Air Sampling...........................................................................................................................................9

Special Studies......................................................................................................................................9

Quality Control .............................................................................................................................................10

Water Sampling...................................................................................................................................11

Air Sampling.........................................................................................................................................11

Special Studies....................................................................................................................................11

Summary........................................................................................................................................................11

References Cited..........................................................................................................................................12

Figures

Figure 1. Map showing location of the study area, Sweetwater River watershed,

the Sweetwater and Loveland Reservoirs, the Reynolds Desalination Plant, 

and selected wells........................................................................... 2

Figure 2. Map showing Sweetwater Reservoir sampling sites and the most probable 

alignment of SR 125, San Diego County, California .................................... 5

Figure 3. Map showing Loveland Reservoir sampling sites, San Diego County, California ...... 6
vi

Tables

Table 1. Site identification numbers, site names, state well numbers, and other 

identifiers, San Diego County, California ................................................ 14

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoirs 

sampling sites and for Sweetwater River above Sweetwater Reservoir, 

San Diego County, California ............................................................ 15

Table 3. Analytical results for selected volatile organic compounds in whole water using USGS 

National Water Quality Laboratory Schedule 2020 in Sweetwater and 

Loveland Reservoirs, San Diego County, California .................................... 25

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological 

Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California .................................... 53

Table 5A. Analytical results for volatile organic compounds with low breakthrough 

volumes in air for the Sweetwater Reservoir air sampling site, San Diego County, 

California .................................................................................... 70

Table 5B. Analytical results for volatile organic compounds with high breakthrough 

volumes in air from the Sweetwater Reservoir air sampling site, San Diego 

County, California ........................................................................... 72

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for 

the Sweetwater Reservoir air sampling site, San Diego County, California ......... 92

Table 7A. Pesticide compounds analyzed in air from modified U.S. Geological Survey 

National Water Quality Laboratory schedules for the Sweetwater Reservoir air 

sampling site, San Diego County, California .............................................122

Table 7B. Analytical results for pesticide concentrations in air using modified 

U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for

the Sweetwater Reservoir air sampling site, San Diego County, California .........124

Table 7C. Analytical results for pesticide concentrations in air using modified 

U.S. Geological Survey National Water Quality Laboratory Schedule 2002 

for the Sweetwater Reservoir air sampling site, San Diego County, California......134

Table 8. Analytical results for first special study—pesticide compounds in filtered 

water using U.S. Geological Survey National Water Quality Laboratory Schedule 

2002—in Sweetwater River and Sweetwater Reservoir, San Diego County,

California ....................................................................................138

Table 9A. Analytical results for second special study —pesticides in semipermeable 

membrane device (SPMD) samples—for the Sweetwater Reservoir, 

San Diego County, California ............................................................146

Table 9B. Analytical results for second special study—polycyclic aromatic hydrocarbons 

and other semivolatile organic compounds in semipermeable membrane device 

(SPMD) samples—for the Sweetwater Reservoir, San Diego County, California ...147

Table 10. Analytical results for third special study—dissolved copper—at the Perdue 

Treatment Plant, the Reynolds Desalination Facility, and Sweetwater Wells, 

San Diego County, California...............................................................150

Table 11. Analytical results of fourth special study—volatile organic compounds in 

whole water—using U.S. Geological Survey National Water Quality Laboratory 

Schedule 2020 for selected National City wells, San Diego County, California ......151

Table 12. Analytical results for fifth special study—dissolved trace metals in filtered 

water—for the Sweetwater Reservoir, San Diego County, California ...............154

Table 13. Analytical results for sixth (last) special study—selected wastewater 

compounds in whole water—for the Sweetwater and Loveland Reservoirs, 

San Diego County, California...............................................................155
vii

Table 14. Quality-control analytical results for volatile organic compound (VOC) 

concentrations using U.S. Geological Survey National Water Quality Laboratory 

Schedule 2020 for water samples from Sweetwater and Loveland Reservoirs, 

San Diego County, California...............................................................160

Table 15. Quality-control analytical results for pesticide concentrations using U.S. 

Geological Survey National Water Quality Laboratory Schedule 2001 for filtered 

water samples from Perdue Treatment Plant, San Diego County, California.........170

Table 16A. Quality-control analytical cartridge travel blank results for volatile organic 

compounds with low breakthrough volumes for the Sweetwater Reservoir air 

sampling site, San Diego County, California .............................................172

Table 16B. Quality-control analytical cartridge spike results for volatile organic compounds 

with low breakthrough volumes for the Sweetwater Reservoir air sampling site, 

San Diego County, California...............................................................175

Table 16C. Quality-control analytical cartridge lot blank results for volatile organic 

compounds with low breakthrough volumes for the Sweet-water Reservoir air 

sampling site, San Diego County, California .............................................177

Table 16D. Quality-control analytical laboratory blank results for volatile organic 

compounds with low breakthrough volumes for the Sweetwater Reservoir air 

sampling site, San Diego County, California .............................................179

Table 17A. Quality-control analytical cartridge travel blank results for volatile organic 

compounds (VOC) with high breakthrough volumes for the Sweetwater Reservoir 

air sampling site, San Diego County, California..........................................181

Table 17B. Quality-control analytical results for cartridge spike for volatile organic 

compounds (VOC) with high breakthrough volumes for the Sweetwater Reservoir 

air sampling site, San Diego County, California..........................................201

Table 17C. Quality-control analytical cartridge lot blank results for volatile organic 

compounds (VOC) with high breakthrough volumes for the Sweetwater Reservoir 

air sampling site, San Diego County, California..........................................211

Table 17D. Quality-control analytical laboratory blank results for volatile organic 

compounds (VOC) with high breakthrough volumes for the Sweetwater Reservoir 

air sampling site, San Diego County, California..........................................231

Table 18A. Quality-control laboratory reagent blank results for polycyclic aromatic 

hydrocarbon compound concentrations for the Sweetwater Reservoir air 

sampling site, San Diego County, California .............................................251

Table 18B. Quality-control laboratory reagent spike results for polycyclic aromatic 

hydrocarbon compound concentrations for the Sweetwater Reservoir air 

sampling site, San Diego County, California .............................................254

Table 19A. Quality-control laboratory reagent blank results for pesticide concentrations 

using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego 

County, California ...........................................................................255

Table 19B. Quality-control laboratory spike results for pesticide concentrations using 

modified U.S. Geological Survey National Water Quality Laboratory Schedule 

2001 for the Sweetwater Reservoir air sampling site, San Diego County, 

California ....................................................................................258

Table 20A. Quality-control laboratory reagent blank results for pesticide concentrations 

using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, 

California ....................................................................................260
Notes

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:

 °F = (1.8 × °C) + 32

Temperature in degrees Fahrenheit (°F) may be converted to degrees Celsius (°C) as follows:

 °C = (°F – 32)/1.8

Vertical coordinate information is referenced to the North American Vertical Datum of 1988 (NAVD 88).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Altitude, as used in this report, refers to distance above the vertical datum.

Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius (μS/cm at 25°C).

Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) or micrograms 

per liter (μg/L). 

Table 20B. Quality-control laboratory reagent spike results for pesticide concentrations in 

air using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego 

County, Californ ..............................................................................263

Table 21. Quality-control analytical results for surrogates added to the semipermeable 

membrane device in the Sweetwater Reservoir, San Diego County, California......267

Table 22. Quality-control laboratory reagent blank and reagent spike results for selected 

wastewater compounds in whole water at the U.S. Geological Survey National 

Water Quality Laboratory, Colorado ......................................................268

Conversion Factors

Multiply By To obtain

acre-foot (acre-ft) 1,233 cubic meter (m3)

acre-foot (acre-ft) 0.001233 cubic hectometer (hm3) 

centimeter (cm) 0.3937 inch (in.)

gram (g) 0.03527 ounce, avoirdupois (oz)

hectometer, cubic (hm3) 810.7 acre-foot (acre-ft)

kilogram (kg) 2.205 pound, avoirudupois (lb)

kilometer (km) 0.6214 mile (mi)

liter (L) 33.82 ounce, fluid (oz)

meter (m) 3.281 foot (ft)

millimeter (mm) 0.03937 inch (in.)

viii
Abbreviations, Acronyms, and Initialisms

(Note: Clarification or additional information is provided in parentheses)

acre-ft, acre-foot

cm, centimeter

g, gram

gm–3, gram per cubic meter

km, kilometer

km2, square kilometer

L, liter

m, meter

m3, cubic meter

mg, milligram

min, minute

mm, millimeter

μg, microgram

μS/cm, microsiemens per centimeter

CARB, California Air Resources Board

GC/MS, gas chromatography/mass spectrometry

GFF, glass fiber filter

LFDD, low-flow diversion dam

LLR, Loveland Reservoir

MCL, maximum contaminant level

MDL, method detection limit

MRDP, Methods Research and Development Program

NAWQA, National Water Quality Assessment (USGS)

NPDES, National Pollutant Discharge Elimination System

NWQL, National Water Quality Laboratory (USGS)

PAH, polynuclear aromatic hydrocarbons

PCB, polychlorinated biphenyls

PUF, polyurethane foam

SDF, San Diego Formation

SPMD, semipermeable membrane device

SR, state route

SWR, Sweetwater Reservoir

URDS, Urban Runoff Diversion System

USGS, U.S. Geological Survey

VOC, volatile organic compound

ix
Well-Numbering System

Wells are identified and numbered according to their location in the rectangular system for the subdivision 

of public lands. Identification consists of the township number, north or south; the range number, east or west; 

and the section number. Each section is divided into sixteen 40-acre tracts lettered consecutively (except I and 

O), beginning with “A” in the northeast corner of the section and progressing in a sinusoidal manner to “R” 

in the southeast corner. Within the 40-acre tract, wells are sequentially numbered in the order they are inventoried. The final letter refers to the base line and meridian. In California, there are three base lines and meridians; Humboldt (H), Mount Diablo (M), and San Bernardino (S). All wells in the study area are referenced to 

the San Bernardino base line and meridian (S). Well numbers consist of 15 characters and follow the format 

017S002W-028R001. In this report, well numbers are abbreviated and written 17S/2W-28R1. Wells in the same 

township and range are referred to only by their section designation, 28R1. The following diagram shows how 

the number for well 17S/2W-28R1 is derived.

17S/2W-28R1

D C B A

E F G H

M L K J

N P Q R

6 5 4 3 2 1

7 8 9 10 11 12

18 17 16 15 14 13

19 20 21 22 23 24

30 29 28 26 25

31 32 33 34 35 36

27

R2W R1W

T17S

T16S

T15S

R3W

RANGE

TOWNSHIP

R5W R4W

T18S

T19S

R2W

Well-numbering diagram (Note: maps in this report use abbreviated well numbers such as "28R1")

SECTION 28

T17S
Water- and Air-Quality Monitoring of the 

Sweetwater Reservoir Watershed, San Diego County, 

California—Phase One Results, Continued, 1999–2001

By Gregory O. Mendez, William T. Foreman, Jagdeep S. Sidhu, and Michael S. Majewski

Abstract

In 1998, the U.S. Geological Survey, in cooperation with 

the Sweetwater Authority, began a study to assess the overall 

health of the Sweetwater watershed with respect to chemical 

contamination. The study included regular sampling of air and 

water at Sweetwater Reservoir for chemical contaminants, 

including volatile organic compounds, polycyclic aromatic 

hydrocarbons, pesticides, and major and trace elements. Background water samples were collected at Loveland Reservoir 

for volatile organic compounds and pesticides.

The purpose of this study was to monitor changes in 

contaminant composition and concentration in the air and 

water resulting from the construction and operation of State 

Route 125 near Sweetwater Reservoir. To accomplish this, the 

study was divided into two phases. Phase One sampling was 

designed to establish baseline conditions for target compounds 

in terms of detection frequency and concentration in air and 

water. Phase Two sampling is planned to continue at the established monitoring sites during and after construction of State 

Route 125 to assess the chemical impact this roadway alignment project may have on the water quality in the reservoir. In 

addition to the ongoing data collection, several special studies 

were initiated to assess the occurrence of specific chemicals 

of concern, such as low-use pesticides, trace metals, and 

wastewater compounds. 

This report describes the study design, and the sampling 

and analytical methods, and presents the results for the second 

and third years of the study (October 1999 to September 

2001). Data collected during the first year of sampling (October 1998 to September 1999) were published in 2002. 

Introduction

The Sweetwater Authority (hereinafter referred to as 

the “Authority”), under the guidance of its Board of Directors, operates a public drinking-water supply system for over 

175,000 residential and commercial customers in Chula 

Vista, National City, and Bonita, California. The Sweetwater 

Reservoir (SWR) (fig. 1), which has a storage capacity of 

34.6 hm3, is located about 15 km southeast of San Diego, California. The Authority also stores water at Loveland Reservoir 

(LLR) (fig. 1), which has a storage capacity of 31.3 hm3 and 

is located about 30 km east of SWR near Alpine, California. 

In addition to the two reservoirs, the Authority operates two 

deep wells in National City and several alluvial wells near the 

Sweetwater River in Chula Vista. The Reynolds Desalination 

Facility, formerly known as the Demineralization Facility, in 

Chula Vista, treats brackish ground water from the wells along 

the Sweetwater River. Approximately 70 percent of the water 

the Authority provides comes from local supplies that include 

the Sweetwater River and ground water. The remaining water 

is imported from the Colorado River and northern California 

sources through pipelines and aqueducts. Both local reservoir 

and imported waters are treated at the Robert A. Perdue 

treatment plant located at the SWR.

The Sweetwater River watershed covers 466 km2 

(fig. 1). Although much of the land is undeveloped, the watershed includes the Sycuan and Viejas Indian Reservations, part 

of the Cleveland National Forest, agricultural land, rural residential acreage, urban and suburban residential development, 

mining and industrial land use, commercial recreation, and 

commercial business development. The watershed currently 

includes three 18-hole golf courses. During the data-collection 

period described (water years 2000 and 2001), no recreational 

activities were allowed at the SWR. Shore fishing is allowed 

at Loveland Reservoir in a restricted area at the east end of the 

reservoir. The Authority maintains a motorized boat at each 

reservoir for routine water-quality sampling and regular shore 

patrols.
Base from U.S. Geological Survey digital data, 1:100,000, 1981–89;

Universal Transverse Mercator Projection (NGVD 29), Zone 11.

Baja California, Mexico

San Diego County, USA

San Diego El Cajon

Pacific Ocean

Sweetwater

River

watershed

8

5

8

94

94

54

125

125

Loveland

Reservoir

Sweetwater

Reservoir

Otay

Reservoir

Sweetwater River

805

Alluvial wells

National City wells Sweetwater River at Steele Canyon bridge 

Reynolds Desalination Facility

EXPLANATION

16Q3

16Q4

27P2 27P1

28R1

27N2 34C1

905

Study

Area San Diego

Los

Angeles

San

FranciscoCALIFORNIA

Pacific Ocean

0

0 5 10 Kilometers

5 10 Miles

Figure 1. Location of the study area, Sweetwater River watershed, the Sweetwater and Loveland Reservoirs, the Reynolds 

Desalination Plant, and selected wells.

   Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
The impact of local inputs of anthropogenic compounds, 

such as organic chemicals and pesticides, on the watershed 

and reservoir water quality is largely unknown. The Authority is concerned about the impact that increasing growth and 

development in the Sweetwater River watershed will have on 

the quality of their drinking-water supply and has initiated 

a variety of efforts to protect the watershed. These efforts 

include source assessments, total-organic-carbon assessments, 

watershed stakeholders’ outreach program to identify issues, 

and the construction and operation of an urban-runoff diversion system. These programs help the Authority evaluate and 

manage the overall environmental health of the watershed by 

monitoring changes that can degrade the quality of the water 

supply and necessitate additional water treatment as the population increases and land use intensifies. Responding to these 

concerns, in 1998, the Authority initiated a monitoring study 

in cooperation with the U.S. Geological Survey (USGS).

In addition to the increasing urbanization pressures 

within the watershed, another Authority concern and the 

primary reason for this study, is the construction and operation 

of State Route (SR) 125. In 1984, the San Diego Association 

of Governments added SR 125 to the Regional Transportation Plan as part of San Diego’s future highway system. The 

SR 125 project (fig. 1) consists of approximately 18 km of 

roadway construction and alignment that extends from SR 54 

(northern terminus) to Interstate 905 (southern terminus). The 

project plans call for the initial construction of a four-lane 

toll way that may be expanded to include additional lanes for 

dedicated transit purposes such as high occupancy vehicles or 

light-rail (California Department of Transportation, 2001). 

More than 200,000 vehicles per day, including more than 

10 percent of heavy diesel trucks from both the United States 

and Mexico, are expected to travel SR 125. The alignment 

will be elevated about 30 m above land surface at its highest 

point, and the most likely construction scenario will bring 

SR 125 within about 150 m of the reservoir at its nearest point. 

Construction of SR 125 was scheduled to begin in 2005 and 

is expected to be completed in 2007. Because the SWR is 

downwind of all proposed alignments, the Authority became 

concerned that toxic vehicle emissions and pesticides used on 

the roadside, as well as paved-road dusts, might enter the reservoir by atmospheric deposition in concentrations that could 

affect public health and have an impact on the cost of treating 

the drinking-water supply. 

In 1996, the Authority commissioned a study (Ogden 

Environmental and Energy Services, 1997) to model the atmospheric depositional loading to the SWR. The model included 

a variety of toxic compounds from vehicular fuel combustion 

emissions and any attendant health risks associated with all 

SR 125 alignment scenarios. The predicted concentrations 

of selected contaminants were compared with the standards 

set by the California Safe Drinking Water Act (California 

Environmental Protection Agency, 1986) and with California 

and federal maximum contaminant levels (MCL). The model 

results indicated that drinking-water guidance levels for one or 

more contaminants would be exceeded in all three alternative 

freeway construction options. This study was repeated reaching similar conclusions (Byard and Giroux, 1999). Both the 

Authority and U.S. Environmental Protection Agency Region 

IX concluded that the findings in the Ogden and the Byard and 

Giroux reports warranted the implementation of a monitoring 

program to characterize the impact that atmospheric deposition of vehicular emissions from the operation of SR 125 may 

have on the quality of the drinking water stored in the SWR. 

Purpose and Scope 

The purpose of this report is to describe the data that 

were collected from October 1999 to September 2001 (water 

years 2000 and 2001), prior to the start of construction of SR 

125. This report is the second in a series that describes the 

monitoring activities and presents the data that will be used to 

assess the potential impact on water quality in the Sweetwater 

Reservoir resulting from land-use changes and development in 

the watershed. Data collected during the first year of sampling 

(October 1998 to September 1999) were published in Majewski and others (2002). A full interpretation and assessment of 

the data will be completed at the end of the monitoring study. 

The scope of the USGS study is to compare analytical results of samples from three environmental media—air, 

water, and bed sediment—to determine whether any measured 

changes in reservoir water quality are the result of atmospheric 

deposition from the construction and operation of SR 125. 

Because new chemical contaminants of concern are identified 

regularly, this project has worked closely with the Methods 

Research and Development Program (MRDP) group at USGS 

National Water Quality Laboratory (NWQL) to help bring 

online new analytical methods for chemicals of concern, such 

as endocrine disrupting compounds, pharmaceuticals, wastewater indicator compounds, and the ever increasing number 

of pesticides being used. The MRDP at NWQL continually 

develops new analytical methods for the various classes of 

emerging chemical contaminants. 

Study Design

The study consists of two phases: Phase One sampling 

started in October 1998 and will continue until construction 

starts for SR 125, when Phase Two sampling will begin. The 

objectives of Phase One are to determine the occurrence and 

concentration of selected organic and inorganic compounds in 

water, air, and bed sediments and to establish baseline conditions for the target analytes before construction of SR 125 

begins. The objectives of Phase Two are to continue monitoring for the same chemical constituents, to compare the 

analytical results with those from Phase One, and to assess the 

impact of SR 125 on water quality in the SWR. Two types of 

studies were done: a study using primary samples to determine 

a common set of compounds and special studies to assess the 

occurrence of specific chemicals of concern. 

Study Design 
Primary Sampling 

Each of the environmental media (water, air, and sediment) in the Sweetwater watershed is being sampled and analyzed for those compounds expected to accumulate in them. 

The media and compounds that will be sampled throughout 

the study, the core (primary) data, include the following:

Surface water—volatile organic compounds (VOC) and 

pesticides; 

Air—VOCs, polycyclic aromatic hydrocarbons (PAH), 

and pesticides; 

Bed sediments—PAHs, total polychlorinated biphenyls 

(PCB), pesticides, and major and trace metals. 

Originally, Phase One incorporated seven water-sampling 

sites at SWR (sites 1–7, fig. 2), and two at LLR (fig. 3). Regularly scheduled water sampling began at these sites during 

the first year of the study (water year 1999). Starting with the 

second year, only three of the seven sites at SWR and one site 

at LLR were used for sampling. 

Phase Two sampling will start when construction of SR 

125 begins. Water and air monitoring will continue at the 

established sites during and after the construction of SR 125. 

Data from the California Air Resources Board (CARB) Air 

Toxics monitoring site at Chula Vista will be used to assess the 

number and concentration of airborne anthropogenic compounds originating from areas upwind of the SR 125 alignment. Phase Two monitoring also will be used to assess the 

continuing inputs of anthropogenic compounds resulting from 

the land-use practices in the watershed by comparing compound detections and frequency with data collected in Phase 

One. 

The air-sampling site is located adjacent to SWR, 

downwind of the proposed SR 125 routes and upwind of 

SWR along a transect of the predominant wind direction (site 

denoted by a star symbol on fig. 2). Air samples were not 

collected at LLR because its foothill location (30 km east of 

SWR) is considered sufficiently downwind of SR 125 to be 

minimally affected by any airborne contaminants originating 

from this highway. The air-sampling site is wired for 

AC power (120 volts), equipped with telephone modem 

access, and secured from the general public by a 2-m high 

chain-link fence.

Surficial bed sediments were not sampled during the time 

frame covered by this report, but were sampled at the beginning of Phase One, as previously reported by Majewski and 

others (2002), at each reservoir water-sampling site and at the 

urban-runoff diversion system ponds. Also, at the beginning of 

Phase One, a one-time coring of the SWR bed sediments was 

completed (Majewski and others, 2002). The bed sediments 

will be resampled at the beginning of Phase Two and again 

several months before the completion of the study. 

•

•

•

Special Studies

During the course of this project, several special studies 

have been initiated to help the Authority better understand 

the effects that different operational modes have on water 

quality. These special studies, which are of limited scope and 

only conducted at a targeted subset of sampling locations, 

are expected to provide up-to-date water-quality information 

on chemicals of current concern. Six special studies were 

conducted during the 2-year time frame covered by this report 

(1999–2001). Two of these special studies involved analysis of 

ground water. 

Sampling and Analytical Methods 

Water Sampling

Reservoir water samples for all analyses were collected 

using a 1.2-L, Teflon Kemmerer sampler (Wildco, Saginaw, 

MI). Procedures for collecting and processing water samples 

for dissolved chemical determinations are based on protocols 

used by the NAWQA Program (Shelton, 1994, 1997). Samples 

from the low-flow diversion dam (LFDD, fig. 2) were obtained 

as grab samples collected by submerging the sample bottle, 

removing the cap, filling the bottle, and recapping the bottle 

while still submerged. The finished (treated) drinking-water 

samples and imported raw-water samples were collected from 

spigots located at the distribution points. The water lines were 

flushed for 5 minutes before the sample bottles were filled.

Each primary water sample was analyzed for VOCs and 

pesticides at USGS National Water Quality Laboratory. The 

VOC analysis determined 87 compounds by purge and trap 

capillary-column gas chromatography/mass spectrometry (GC/

MS) with full-scan ion monitoring (Connor and others, 1998). 

Water samples for pesticide analyses were filtered through 

0.7-micrometer (nominal pore diameter) glass-fiber filters and 

were analyzed for pesticides using laboratory schedule 2001 

at USGS NWQL. Schedule 2001 determines 47 pesticides and 

pesticide transformation products by C-18 solid-phase extraction (SPE) and capillary-column GC/MS with selected-ion 

monitoring (GC/MS-SIM) (Zaugg and others, 1995). 

Air Sampling

During the time frame of the sample collection and 

analyses that were performed for this report, there were no 

published USGS methods for the techniques used in this monitoring program to measure pesticides and PAHs, and as such, 

these techniques are considered “research methods.” Analytical results that were obtained using these research methods 

have not been entered into the USGS database, but rather are 

presented in this report along with a full description of the 

methods that were used to obtain the data.

 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
In conjunction with the USGS, the low-volume air sampling and analytical methods for VOCs were developed by, 

and all samples were analyzed by, the research group of Dr. 

James Pankow at the Oregon Graduate Institute of the Oregon 

Health and Science University. The air samples for VOC 

analyses were collected by adsorption onto cartridges and analyzed by thermal-desorption GC/MS procedures as detailed in 

Pankow and others (1998). Using these procedures, ambient, 

gas-phase, atmospheric VOC concentrations were monitored 

using two programmable low-volume air sampling pumps 

(224-PCXR8, SKC INC., Eight Four, Pennsylvania). One type 

of sampler was used to pull a 1.5-L sample of air through a 

glass cartridge containing 50 mg of Carbotrap B in series with 

280 mg of Carboxen 1000 (Supelco, Bellafonte, Pennsylvania) 

for the analysis of seven VOCs with the highest volatilities 

(lowest breakthrough volumes), including several chlorofluorocarbons. A second type of sampler was used to pull a 5-L 

sample of air through a glass cartridge containing 180 mg of 

Carbotrap B in series with 70 mg of Carboxen 1000 (Supelco, 

Bellafonte, Pennsylvania) for the analysis of the remaining 

 1 Near pump tower

 2 Near Vista del Lago

 3 Center of minimum pool

 4 Near recreation area

 5 Minimum pool boundary east

 6 East end reservoir fill

 boundary

 7 Near Gum Tree Cove pond

 A Vista del Lago

 B Gum Tree Cove

Urban Runoff Diversion

 System—

Water sample and surficial bed

sediment (Sweetwater Reservoir)— 8 Perdue Treatment Plant 

 finished water

 9 Perdue Treatment Plant

 imported raw water

10 Sweetwater River at

 low-flow diversion dam 

Water sample only— 

S17

S17

S17

Sweetwater River

low-flow diversion

dam

1

2 3

4

5

6

7

8

9

10

A

B

Air sample site

Sediment core sample site

EXPLANATION

0 0.5 1 Mile

0 0.5 1 Kilometer

54

125

125

Sweetwater Reservoir—

 minimum pool

 boundary

Sweetwater Reservoir—

 maximum pool

 boundary

SR-125 alignment

 (under construction)

Highway

Road

Sweetwater River

Intermittent stream

Pipeline

Base from U.S. Geological Survey digital data, 1:100,000, 1981–89;

Universal Transverse Mercator Projection (NGVD 29), Zone 11.

Figure 2. Sweetwater Reservoir sampling sites and the most probable alignment of SR 125, San Diego County, California.

Sampling and Analytical Methods 
79 VOCs with lower volatilities (higher breakthrough volumes). Each sample was a 24-hour composite collected every 

12th day. The timing of the air-sample collection for VOCs 

was coordinated with the CARB Air Toxics Program. Samples 

were analyzed for 86 VOCs, which ranged in volatility from 

dichlorofluoromethane (CFC-12), which had the highest volatility, to 1,2,3-trichlorobenzene, which had the lowest volatility 

(Pankow and others, 1998).

The research methods used in this monitoring program 

for sampling and analyzing semivolatile organic compounds 

(PAHs and pesticides) in air are comparable to those described 

by Foreman and others (2000) for pesticides, and to USEPA 

methods TO-4A for pesticides (U.S. Environmental Protection 

Agency, 1999a) and TO-13A for PAHs (U.S. Environmental 

Protection Agency, 1999b). These air methods were developed 

to complement the pesticides in water methods (Zaugg and 

others, 1995; Sandstrom and others, 2001) and PAH/alkylPAH in sediment method (Olson and others, 2004) applied to 

the SWR monitoring program. 

The high-volume air samples for the analysis of PAHs 

or pesticides were collected by drawing air through a 90-mm 

diameter glass-fiber filter (GFF; type A/E, Pall Corp., East 

Hills, NY) followed by a cartridge containing two polyurethane foam (PUF) plugs. The GFF collects atmospheric 

particles from which the operationally defined particle-phase 

concentration of each analyte is determined. The PUF plugs 

collect the operationally defined gas-phase concentration of 

each analyte. Prior to use, the GFFs were cleaned by baking at 450 degrees Celsius (°C), desiccated for at least 2 

hours until cool, weighed to the nearest 0.2 milligram (mg) 

on a balance, wrapped in baked aluminum foil, and stored 

in resealable polyethylene bags. At the SWR air-sampling 

site, a GFF was removed from the foil with clean (methanolrinsed) stainless steel forceps and placed in a perfluoralkoxy 

fluoropolymer (Teflon-PFA) filter holder (series 90, Savillex 

Corp., Minnetonka, MN) that was modified in two ways. The 

outer closure piece of the filter holder was cut open to provide an 80-mm diameter opening that would improve air flow 

and expose most of the GFF surface for atmospheric particle 

collection. The holder’s inner closure piece was machined to 

include a 3.8-cm female National Pipe Thread (NPT) taper to 

allow direct connection to the 3.8-cm male NPT threaded connection on the inlet of the PUF cartridge. 

PUF plugs for the cartridges were 5 cm in diameter by 

7.6 cm long and were prepared from open-cell foam having 

an average density of 0.043 gm–3 and containing no polybrominated diphenyl ether flame retardants (Netherland Rubber Company, Cincinnati, OH). PUF plugs were cleaned by 

rinsing with tap water and then sequentially extracted for at 

least 12 hours each with acetone, 30-percent ethyl acetate in 

hexane, and dichloromethane in a Soxhlet apparatus. Residual 

solvent was squeezed from the PUF plugs using a stainless-steel potato masher, and the plugs were then dried in a 

vacuum oven at 40°C for at least 48 hours before being stored 

in sealed 500-mL wide-mouth jars with Teflon-lined lids. At 

SWR, primary (top) and secondary (bottom) PUF plugs were 

positioned in series inside a 24.2-cm long by 3.5-cm internal 

diameter Teflon-PFA cartridge (Savillex Corp., Minnetonka, 

MN) with the bottom PUF plug held in place against a TeflonPFA screen. PUF plugs were carefully inserted into the PUF 

Base from U.S. Geological Survey digital data, 1:100,000, 1981–89;

Universal Transverse Mercator Projection (NGVD 29), Zone 11.

EXPLANATION

Loveland Reservoir

near dam

(LLR01)

Loveland Reservoir

east end near

source inlet

(LLR02)

0 0.5 1 Mile

0 0.5 1 Kilometer

Water sample site and

 surficial bed sediment

River or stream

Road

Reservoir—Maximum

 pool boundary

Japatul Rd

Dehesa Rd

Figure 3. Loveland Reservoir sampling sites, San Diego County, California.

 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
cartridge using clean stainless steel forceps to ensure that 

the PUF plugs were well fitted to the cartridge wall with no 

creases that would allow air to migrate around the plug instead 

of passing through the foam. 

The PUF cartridge was then connected to the GFF filter 

holder, and the GFF-PUF sampling train was positioned inside 

a high-volume sampler enclosure (Graesby-GMW, Village of 

Cleves, Ohio) comparable to that described in USEPA method 

TO-4A (U.S. Environmental Protection Agency, 1999a). The 

outlet of the PUF cartridge was connected via 0.95-cm outer 

diameter Teflon tubing to a high-volume blower motor. Air 

samples were collected by pulling ambient air through the 

GFF-PUF sampling train at flow rates of 23 to 55 L/min for 

seven days, providing sample volumes ranging from 234 to 

585 m3 (cubic meter) for samples described in this report. 

Sampling times were controlled by a timer, and sample 

volume was calculated by multiplying the sample collection 

time by the air flow rate determined using a calibrated flow 

meter. Following sample collection, the GFF was removed 

from the holder using clean forceps, returned to the aluminum 

foil, folded in half (particle-laden side inward), and sealed in 

the foil and bag. PUF plugs were returned to the jars using 

forceps, and the jars were labeled to identify the top or bottom 

PUF and were tightly sealed with the lids. GFF and PUF were 

stored at 4°C (maximum) prior to overnight shipment on ice to 

USGS NWQL. 

At NWQL, air sample components were stored at –5°C 

(maximum) until analysis. GFFs were desiccated for 24 hours 

and weighed to ±0.2 mg to determine particle weight. This 

weight was divided by the sample’s air volume to determine 

the total suspended particle (TSP) concentration. Each GFF 

was placed in a 500-mL flat bottom flask, and each PUF plug 

was placed in a Soxhlet apparatus. The GFF and PUF plugs 

were fortified with surrogate compounds (see Quality Control 

section later in report) and extracted with 100-mL (GFF) or 

300-mL (PUF) of 30-percent ethyl acetate in hexane for at 

least 12 hours. Top and bottom PUF plugs were extracted and 

analyzed separately during this reporting period to determine 

PUF collection efficiency for gas-phase analytes. Extracts 

were dried with sodium sulfate and reduced in volume to 1 mL 

using Kuderna-Danish distillation and nitrogen gas evaporation. Each extract was then transferred to a 0.5-g octadecylsilyl 

(C-18) solid-phase extraction (SPE) column (Isolute 221-

0050-BS, Biotage AB, Charlottesville, VA) positioned over a 

1-g Florisil-PR column (Isolute 712-0100-C). Analytes were 

eluted from these columns with 6 mL of ethyl acetate, which 

was reduced in volume to about 0.3 mL by nitrogen gas evaporation. Extracts were transferred with 0.15-mL ethyl acetate 

rinse to 2-mL GC vials containing 500 ng of 1,4-dichlorobenzene and five perdeuterated polycyclic aromatic hydrocarbons (naphthalene-d8, acenaphthene-d10, phenanthrene-d10, 

chrysene-d12, and perylene-d12) in ethyl acetate as internal 

injection standards. 

The extracts were then analyzed by three different 

GC/MS-SIM methods. Pesticides and degradates comparable 

to those determined by NWQL water schedule 2001 were 

measured using the operational conditions described by Zaugg 

and others (1995) and Lindley and others (1996). A subset of 

parent pesticides and degradates comparable to those determined by NWQL water method 2002 were measured using 

the GC/MS conditions given by Sandstrom and others (2001). 

Finally, PAHs and alkyl-PAHs were analyzed using GC/MS 

conditions comparable to that described by Olson and others (2004) for a subset of those compounds determined by 

that sediment method except that the mass spectrometer was 

operated in the selected-ion monitoring mode to provide lower 

detection levels. Compound concentrations determined from 

these three methods are reported in nanograms per cubic meter 

of air (ng/m3). 

Special Studies

In addition to the primary sampling of water and air 

to provide a core dataset for the understanding of potential 

water-quality impacts on the SWR, six “special studies” were 

conducted during the 1999−2000 time frame covered by this 

report. These special studies were conducted to obtain waterquality information about specific processes and chemicals 

of current concern. Two of these special studies (the first and 

the sixth) were conducted to investigate the occurrence of 

additional organic chemical contaminants in water using two 

new research methods that were under development at the 

NWQL. The other four special studies (the second through the 

fifth) used traditional methods to supplement the data from the 

primary sampling.

The first special study collected water samples for 

determination of moderate-use pesticides and degradates using 

procedures that subsequently became official USGS schedule 

2002 (Sandstrom and others, 2001). Water samples collected 

by this method were filtered through 0.7-μm nominal pore size 

GFFs into baked 1-L sample bottles, capped, and then shipped 

on ice to the USGS NWQL. Analyses were performed using 

the C-18 SPE and GC/MS techniques described by Sandstrom 

and others (2001). The second special study investigated the 

dissolved-phase concentrations of organochlorine compounds, 

PAHs, and other semivolatile compounds in the SWR by use 

of semi-permeable membrane devices (SPMD) developed by 

the USGS (Huckins and others, 1990).

The third special study was an investigation of dissolved 

copper, which was analyzed using the same analytical methods as were used for the other water samples collected for the 

primary sampling, as described by Shelton (1994 and 1997). 

The fourth special study was an investigation of VOCs in two 

drinking-water production wells located north of the Reynolds 

desalination plant (fig. 1). The fifth special study analyzed 

dissolved trace metals, which were analyzed by inductivelycoupled plasma/mass spectrometry using methods described in 

Faires (1993). 

Sampling and Analytical Methods 
The sixth special study collected whole-water samples for 

the determination of wastewater indicator compounds. Samples for wastewater compounds were extracted with dichloromethane in a continuous liquid-liquid extractor. Extracts 

were reduced in volume to 0.5 mL by micro-Kuderna-Danish distillation and nitrogen evaporation. Perdeuterated PAH 

internal standards were added to the extracts and analyzed by 

GC/MS-SIM (samples collected in December 2000) or GC/

MS operated in full scan mode (samples from March 2001). 

The GC/MS full scan analysis is comparable to that described 

by Zaugg and others (2002). All water samples for organic 

analyses were shipped on ice to the laboratories for analysis.

Sampling Strategy and Data

Some data tables show more than one laboratory reporting level (LRL) for a compound or element in different samples. This occurs, in part, because reporting levels are updated 

annually, as necessary, as a component of the NWQL’s yearly 

assessment of long-term method detection levels and LRLs 

(Childress and others, 1999). Reporting levels also sometimes 

vary based on differences in sample volumes or the presence 

of interferences. Some concentrations are reported as estimated (E). In this case, the compound was determined to be 

present in the sample on the basis of mass spectral information, but the concentration is less certain because the determined concentration is below the lowest calibration standard 

or the LRL, whichever is greater, or because of recognized 

method limitations for certain compounds. 

Water Sampling

Water samples were collected at three sites in SWR (sites 

1, 3, and 6, fig 2), two sites at the Perdue Treatment Plant 

(sites 8 and 9, fig.2), one site on the Sweetwater River above 

SWR (site 10, fig.2), and one site at LLR (LLR01, fig. 3). The 

results for water samples are entered into the USGS National 

Water Information System database. All sites within SWR, 

with the exception of site 6, were within the reservoir’s minimum pool boundary to ensure that water would be available 

for sampling throughout the year. Site 6 was located in the 

eastern third of the reservoir in very shallow water (fig. 2). As 

the water level fell, the water depth at this site decreased and 

the bed sediments became exposed. When this happened, the 

sampling site was moved to a location where the water depth 

was about 1 m deep. Sampling sites at both SWR and LLR 

were marked with stationary buoys anchored to the bottom of 

the reservoir. 

Three water-sampling sites (sites 8, 9, and 10, fig. 2) were 

established outside the reservoir boundaries. Site 8 monitors 

the quality of the finished (treated) water as it leaves the treatment plant for distribution to customers. Site 9 monitors the 

quality of the imported raw water before it enters the treatment 

plant or resevoir. Site 10, Sweetwater River at the Low-Flow 

Diversion Dam (LFDD), monitors the quality of the watershed drainage water entering SWR. During low flows, the 

water from LFDD is diverted into the Urban Runoff Diversion 

System (URDS) ponds. Local urban runoff and the first flush 

(initial flow after a dry period, when pollutants might occur 

in higher concentrations) in the Sweetwater River are diverted 

into the URDS ponds to prevent unwanted water from entering 

the SWR. All site identification numbers, sampling site names, 

and other identifiers are listed in table 1.

In most cases, imported water is pumped by pipeline 

directly into the treatment plant. Occasionally, this water is 

pumped directly into SWR to augment the local supply. When 

imported water is pumped directly into the reservoir, it significantly increases the water level with volume increases on the 

order of tens of thousands of acre-feet. 

Baseline water sampling at both SWR and LLR began in 

September 1998 and continued at 2-month intervals through 

September 1999. This bimonthly sampling allowed monitoring of various operational modes of the reservoirs, such as 

replenishment or withdrawal events that significantly change 

the water level in the reservoirs. Baseline water sampling 

also showed the spatial variability in chemical occurrence 

and concentration in each reservoir. Beginning in October 

1999, the sampling frequency was reduced to once every third 

month (quarterly). The number of sampling sites at SWR 

was reduced from seven to three, and the two sampling sites 

at LLR were reduced to one. The reduction in the number 

of sampling sites was done to focus the sampling efforts on 

“indicator” sites—those sites that are believed to provide the 

most relevant information without compromising the scientific 

integrity of the project. These sites are

SWR01—located near the dam and the intake for reservoir water to the treatment plant; to monitor the quality 

of water entering the treatment plant.

SWR03—located near the center of the minimum pool; 

to monitor the quality of water at the center of the 

reservoir. 

SWR06—located near the east end of the reservoir; to 

monitor the quality of water entering the reservoir from 

the Sweetwater River. 

LLR01—located near the dam; to monitor the quality 

of the reserve storage water. 

Before any reservoir water was sampled, depth profiles of 

dissolved oxygen, pH, specific conductance, and temperature 

were measured at 1-m intervals from the surface to the reservoir bottom at each sampling location using a multiparameter 

water-quality monitor (table 2). At LLR, the depth-profile 

measurements below 10 m were taken every 2 m because the 

depth of LLR is much greater than the depth of SWR. If the 

temperature profile indicated a thermocline, two sets of water 

samples were collected at the site: one at midepilimnion and 

one at midhypolimnion. The epilimnion can be defined as the 

layer in a lake extending from the surface to a depth where 

photosynthesis no longer occurs. The hypolimnion can be 

defined as the poorly illuminated lower region of a stratified 

lake where denser, colder water currents are minimal. The 

•

•

•

•

 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
temperature of the hypolimnion is nearly uniform and oxygen 

is depleted. This stratum of water is characterized by decay 

rather than by the production of organic matter. If no thermocline was evident, only one sample set was collected at a point 

midway between the water surface and the reservoir bottom. 

The concentrations of VOC analytes detected in water 

ranged from 0.01 μg/L to 66.6 μg/L, and the results are given 

in table 3. The concentrations of pesticide analytes detected 

in filtered water ranged from 0.002 μg/L to 0.02 μg/L, and the 

results are given in table 4. Any additional analyses that were 

added to the sampling regime were performed on samples collected from selected sites. That is, these analyses were done to 

show occurrence and possible source of new analytes of interest, not necessarily their distribution within the watershed.

Air Sampling

The purpose of the air data collected at the air sample 

site (fig. 2) is to establish the occurrence, temporal patterns, 

and ambient levels of selected airborne organic compounds 

(VOCs, PAHs, and pesticides). This site was installed downwind of the proposed SR 125 routes and upwind of SWR 

(fig. 2), along a transect of the predominant wind direction. 

The site includes a fully instrumented meteorological station 

that records hourly averages of wind speed and direction, 

ambient air temperature and relative humidity at two heights, 

rainfall, barometric pressure, and atmospheric stability. Establishment of this air sampling station followed the guidelines 

outlined by the National Atmospheric Deposition Program 

(Bigelow, 1984), with the help of the South Coast Air Pollution Control Board (William Brick, oral commun., 1999). 

The first VOC air sample was collected on March 23, 

1999. Each sample was a 24-hour composite collected every 

12th day. The timing of the VOC sample collection was 

coordinated with the CARB Air Toxics Program. The LRL 

for these analytes ranged from 0.02 to 0.06 part per billion by 

volume. The results for the VOC air samples collected during 

the time frame of this report are given in table 5A for the 7 

compounds with low breakthrough volumes. Table 5B gives 

the results for the remaining 79 VOCs.

The first PAH and pesticide air sample was collected 

during the week of May 11, 1999. Each sample was a 

24-hour/7-day weekly composite collected every third week. 

Air samples were not collected at LLR because its foothill 

location (30 km east of SWR) is considered sufficiently downwind of SR 125 to be minimally impacted by any airborne 

contaminants originating from it. Analytical results for PAHs 

in air samples collected during the time frame of this report 

are given in table 6. PAHs with molecular weights less than 

178 Daltons are not reported because of incomplete collection 

on PUF at the sampled volumes (You and Bidleman, 1984). 

Compounds analyzed for pesticides in air samples using a 

modification of NWQL water Schedules 2001 and 2002 are 

given in table 7A. Results for these pesticides analyzed using 

a modification of NWQL water sample Schedules 2001 and 

2002 are given in tables 7B and 7C, respectively. Not all of the 

compounds that were determined by the corresponding water 

methods are reported for the air samples because certain analytes were known to have incomplete collection on the PUF 

plugs based on a previous study (Foreman and others, 2000) or 

inadequate analytical performance in the air method.

Special Studies

The first special study, which began in January 2000, 

focused on moderate-use pesticides in filtered water analyzed 

using NWQL Schedule 2002 (table 8). Between January 27 

and February 12, 2000, water was transferred (11.2 hm3) from 

LLR to SWR via the Sweetwater River. Because there are 

several golf courses along the Sweetwater River between LLR 

and SWR, this water transfer was an opportunity to examine 

whether pesticides used on the golf courses would accumulate 

in the river channel during extended dry periods and be carried 

downstream with the initial flow of the river after a dry period 

(first flush). This first-flush sampling occurred on the 29th 

and 30th of January 2000 at two sites along the Sweetwater 

River. One sample was collected at the Steele Canyon Bridge 

at Cottonwood Golf Course site (fig. 1) as the released water 

was passing through the area. Four additional samples were 

collected at the LFDD (site 10, fig. 2) at approximately 12-

hour intervals. One sample was collected in early January at 

the LFDD for comparison with the first-flush data. In addition, 

several samples from SWR (sites 1 and 3, fig. 2), the LFDD, 

and the imported raw water (site 9, fig. 2) were taken in June 

and September 2000 and analyzed using this method (table 8).

The second special study investigated concentrations of 

dissolved-phase organochlorine compounds (legacy persistent organic pollutants), PAHs, and other semivolatile organic 

compounds using semipermeable membrane devices (SPMD). 

The organochlorine compounds and PAHs, especially, have 

low water solubility and are of concern with regard to human 

health. This study was conducted during a period of extended 

dry weather when the water level in SWR was low. Three 

SPMDs were deployed in January 2001 near the pump tower 

(site 1, fig. 2); one was implaced for one month and two for 

two months. The results are presented in tables 9A and 9B.

SPMDs are flat polyethylene plastic tubes filled with 

triolein, a lipid-like material. The polyethylene membrane of 

the SPMD allows dissolved (bioavailable) contaminants to 

pass through the membrane while excluding water. The triolein inside the SPMD is similar in characteristics to a highly 

purified fish fat. The contaminants dissolve in the triolein just 

as they do in the fats of a fish. The SPMD was placed on a 

rack, which was inserted into a protective stainless steel container that was then submerged in the water at a depth of 1 m. 

SPMDs collect contaminants in the water that are often hard to 

detect through normal chemical sampling procedures because 

they are present at such low dissolved-phase concentrations. 

SPMDs measure the bioavailable form of a chemical that an 

organism can absorb and incorporate. Very low concentrations 

Sampling Strategy and Data   
of certain contaminants (such as PAHs, organochlorine pesticides, and polychlorinated biphenyls) may still be important 

in the environment because of their ability to bioconcentrate 

in animals (by dietary uptake or uptake through fish gills with 

subsequent accumulation in the animal’s fat). The concentrations of these chemicals in rivers can change daily or even 

hourly, but their concentrations in reservoirs are expected to be 

more constant. The SPMD allows the calculation of an average 

concentration of each contaminant per kilogram of SPMD during the period that the sampling device is in the water.

The third special study analyzed additional water samples 

from various sources for copper concentration in April and 

July 2001 (table 10). In April, two water samples were taken 

at the Perdue Treatment Plant—finished and imported waters; 

and one taken at the Reynolds Desalination Facility—discharge water. The Reynolds Desalination Facility uses reverseosmosis treatment to remove dissolved salts and microscopic 

particles that could be found in alluvial ground water. The 

facility, completed in 1999, can produce four million gallons 

of drinking water a day. The sample collected at the Desalination Facility was from the plant discharge, which is referred 

to as “sample point 45” because it is the compliance point for 

the facility’s National Pollutant Discharge Elimination System 

(NPDES) permit. The sample was collected just before the discharge went into a concrete channel that flows to the Sweetwater River. This sample was a composite sample taken over a 

21-hour period.

In July, ten water samples were collected for dissolved 

copper determination (table 10): one at the Perdue Treatment Plant (finished water) (site 8, fig. 2), four at the Reynolds Desalination Facility (fig. 1), and five at selected San 

Diego Formation wells (SDF1 through 5, table 1, fig. 1). The 

Desalination Facility samples were collected from the inflow, 

feed, effluent, and discharge. The inflow sample point is raw 

water coming into the plant from ground-water wells. The feed 

sample point is the inflow water filtered through a cartridge 

with sulfuric acid with a scale inhibitor added. The effluent sample point is water that goes into the drinking-water 

system. The discharge sample point is water that goes back to 

the Sweetwater River. The five ground-water wells that were 

sampled supply water that feeds into the plant. Depending on 

the needs of the plant, all or a combination of these San Diego 

Formation wells make up their inflow.

The fourth special study analyzed VOCs in water from 

two National City wells that the SWA uses to supplement their 

drinking-water supply. These wells were sampled so that SWA 

would have a better understanding of measured VOCs in their 

supplemental drinking water. The results from sampling these 

two wells in April 2000 are listed in table 11.

The fifth special study analyzed dissolved trace metals in 

reservoir water samples collected in March 2001 (table 12). 

A variety of trace metals occur naturally, but are also emitted 

from auto exhaust, tire wear, and road dust. These analyses 

were added to help understand the role of atmospheric 

deposition of trace metals originating from the SR125 alignment and their affect on water quality.

The last special study analyzed contaminants typically 

associated with wastewater effluent in reservoir whole-water 

samples (sites 1, 8, 9, fig. 2, and LLR01, fig. 3) collected in 

December 2000 and March 2001 (table 13). Some compounds 

have a second LRL because the laboratory quality control 

required that the level be raised to decrease the possibility of 

false positives. The laboratory reporting levels for some compounds were higher in the March 2001 samples.

Quality Control 

Three types of quality-control samples were used in this 

study: blanks, spikes, and replicates. Blanks and spikes are 

used to estimate result bias, and replicates are used to estimate 

result variability. Additionally, surrogate compounds were 

added to VOC, PAH, and pesticide samples at the laboratory to 

monitor sample-specific performance of the analytical method.

Blanks are intended to be free of the analytes of interest 

and can be prepared in the laboratory or field. Blank samples 

are analyzed to test for bias that could result from contamination of environmental samples by the analytes of interest or 

by interfering compounds during any stage of sample collection, processing, or analysis. For this study, blanks for water 

samples were collected by processing USGS laboratory certified reagent water, known to be free of the analytes of interest, through all parts of the sample-collection process. Field 

blanks were collected at an environmental sampling location 

by passing the blank water through all field-cleaned sampling 

equipment. Field blanks were used to demonstrate that all 

stages of sample collection and processing did not introduce 

measurable contamination. Equipment blanks were collected 

annually to monitor for potential contamination due to sample 

collection and processing equipment. Source-solution blanks 

were collected to verify that the laboratory certified reagent 

water was free of the analytes of interest. Travel (trip) blanks 

were used to identify contamination that could occur during 

sample transport and analysis rather than as a result of sample 

collection and processing. Lot blanks were analyzed at the 

laboratory to test the cleanliness of the cartridges. Laboratory blanks (water and air methods) were used to demonstrate 

that the laboratory sample processing steps did not introduce 

measurable contamination.

Spiked samples are prepared by fortifying reagent water, 

an environmental water sample, or the air sampling media, 

with a known concentration of selected analytes. For this 

study, spiked samples were used to measure bias in analyte 

recovery. Matrix spikes also were used to test the effects of 

various sampled matrices on the recovery of specific compounds, including matrix interference or matrix-induced 

analyte degradation. One field water sample was spiked, in 

replicate, for pesticides during this study period.

Replicate water samples were collected and processed 

identically to the environmental sample and used to measure 

the variability during sample processing and analysis.

10 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Water Sampling

One field quality-control sample was collected during 

every sampling campaign except during September 2001. 

The type of quality-control sample collected and the sampling location were chosen randomly. The blank and replicate 

sample quality-control data for VOCs in water samples are 

given in table 14. The field-matrix spike and spike replicate 

quality control data for pesticides in water samples are given 

in table 15.

The quality of analytical results was monitored by adding 

surrogate compounds to each sample before it was processed 

for analysis. These surrogate compounds were added at the 

NWQL to monitor sample preparation and analysis. For water 

samples, 1,2-dichloroethane-d4, toluene-d8, and 1,4-bromofluorobenzene were added to each VOC sample, and diazinon-d10 and a-HCH-d6 were added to each pesticide sample. 

Surrogate results, in percent recovery, for each type of water 

sample is given in tables 3 and 4, respectively.

Air Sampling

Each VOC air sample collected has an associated 

cartridge travel blank, cartridge (reagent) spike, cartridge lot 

blank, and laboratory blank that were analyzed along with the 

environmental sample. The quality-control data for chlorofluorocarbons and other compounds with low breakthrough 

volumes are given in tables 16A, 16B, 16C, and 16D, respectively. The quality-control data for the remaining 80 VOCs are 

given in tables 17A, 17B, 17C, and 17D, respectively.

Air samples for semivolatile organic compounds comprise three components (a GFF and a top and a bottom PUF 

plug) that were individually extracted. These extracts were 

analyzed by three distinct GC/MS procedures at the NWQL 

for PAHs and pesticides. Each air sample component was 

fortified with surrogate compounds at the NWQL to monitor 

sample preparation and analysis. Recovery data for surrogate 

compounds nitrobenzene-d5, 2-fluorobiphenyl, and terphenyl-d14 used to monitor performance for the PAH analysis 

are given in table 6. Recovery data for surrogate compounds 

diazinon-d10 and a-HCH-d6 used to monitor performance for 

the pesticides analyses by modified Schedules 2001 and 2002 

are given in tables 7B and 7C, respectively.

The laboratory reagent blank and laboratory reagent spike 

results for PAHs are given in tables 18A and 18B, respectively. 

Corresponding laboratory blank and laboratory spike results 

for air sample analysis are in tables 19A and 19B using modified schedule 2001-type pesticides, and in tables 20A and 20B

for modified schedule 2002-type pesticides. 

Special Studies

The laboratory blank quality-control data associated with 

the second special study with the SPMD samples are given 

in table 21. The laboratory spike and laboratory blank quality-control data for the sixth (last) special study of wastewater 

compounds are given in table 22. 

Summary

The primary purpose of this study was to monitor 

changes in contaminant composition and concentration in the 

air and water during the construction and operation of a major 

thoroughfare being built upwind of the Sweetwater Reservoir. 

To accomplish this, the study was divided into two phases. 

Phase One sampling was designed to establish baseline 

conditions for target compounds (primary sampling) in terms 

of detection frequency and concentration in air and water. 

Phase Two sampling is planned to continue during and after 

construction of the roadway to assess the chemical impact 

this alignment project may have on the water quality in the 

reservoir. In addition to the ongoing data collection, six special 

studies were initiated during the reporting period of Phase One 

to assess the occurrence of specific chemicals of concern, such 

as moderate-use pesticides and degradates, trace metals, and 

wastewater compounds in water samples.

Many compounds were analyzed to provide a better 

understanding of the effects urbanization may have on a drinking-water reservoir. Before any reservoir water was sampled, 

depth profiles were made of temperature, pH, dissolved oxygen, and specific conductance which were measured at each 

reservoir sampling location (table 2). Analytical results for the 

primary water sampling are given in tables 3 and 4. Analytical results for the primary air sampling are given in tables 

5–7. Data for the six special studies are given in tables 8–13. 

Quality-control data for water samples are given in tables 14

and 15. Quality assurance data for air sampling are given in 

tables 16–20. Quality-control data for two special studies are 

given in tables 21 and 22. 

Summary 11
References Cited

Bigelow, D.S., 1984, Instruction manual: NADP/NTN site 

selection and installation: Fort Collins, Colorado, Colorado 

State University, Natural Resource Ecology Laboratory, 

variously paged [available from National Atmospheric 

Deposition Program Office, Illinois State Water Survey, 

2004 Griffith Drive, Champaign, IL 61820].

Byard, J.L., 1999, Impact of SR125 vehicle emissions on the 

Sweetwater Reservoir—executive summary report: Chula 

Vista, Calif., Sweetwater Authority, 32 p.

California Department of Transportation, 2001, State Route 

125 (From I-905 to State Route 54): District 11 Fact Sheet, 

accessed December 14, 2001, at http://www.dot.ca.gov/

dist11/facts/125south.pdf.

http://www.dot.ca.gov/dist11/facts/125south.pdf

California Environmental Protection Agency, 1986, California 

Safe Drinking Water and Toxic Enforcement Act of 1986 

(Proposition 65): Health and Safety Code, chap. 6.6, Sections 25249.5 through 25249.13.

Connor, B.F., Rose, D.L., Noriega, M.C., Murtagh, L.K., and 

Abney, S.R., 1998, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of 86 volatile organic compounds in water gas 

chromatography/mass spectrometry, including detections 

less than reporting limits: U.S. Geological Survey OpenFile Report 97-829, 78 p.

Faires, L.M., 1993, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of metals in water by inductively coupled plasma-mass 

spectrometry: U.S. Geological Survey Open-File Report 

92-634, 28 p.

Foreman, W.T., Connor, B.F., Furlong, E.T., Vaught, D.G., and 

Merten, L.M., 1995, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of organochlorine pesticides and polychlorinated 

biphenyls in bottom sediment by dual capillary-column 

gas chromatography with electron-capture detection: U.S. 

Geological Survey Open-File Report 95-140, 78 p.

Foreman, W.T., Goolsby, D.A., Majewski, M.S., Wiebe, F.W., 

and Battaglin, W.A., 1997, Acetochlor and other herbicides 

in air and rain in the Midwestern United States [abs.], in

Bridging the global environment: Technology, communication, and education: Society of Environmental Toxicology 

and Chemistry Annual Meeting, 18th, San Francisco, Calif., 

November 16–20, 1997, Abstract Book no. 229, p. 45.

Foreman, W.T., Majewski, M.S., Goolsby, D.A., Wiebe, F.W., 

and Coupe, R.H., 2000, Pesticides in the atmosphere of the 

Mississippi River Valley, Part II—Air: Science of the Total 

Environment, v. 248, no. 2, 3, p. 213–226.

Huckins, J.N., Tubergen, M.W., and Manuweera, G.K., 1990, 

Semipermeable membrane devices containing model lipid:

a new approach to monitoring the availability of lipophilic 

contaminants and estimating their bioconcentration potential: Chemosphere v. 20, p. 533–552.

Lindley, C.E., Stewart, J.T., and Sandstrom, M.W., 1996, 

Determination of low concentrations of acetochlor in water 

by automated solid-phase extraction and gas chromatography with mass selective detection: Journal of the Association of Official Analytical Chemists International, v. 79, 

no. 4, p. 962–966. 

Majewski, M.S., Foreman, W.T., Goolsby, D.A., and Nakagaki, Naomi, 1998, Airborne pesticide residues along the 

Mississippi River: Environmental Science and Technology, 

v. 32, no. 23, p. 3689–3698.

Majewski, M.S., Sishu, J.S., and Mendez, G.O., 2002, Waterquality monitoring of Sweetwater and Loveland Reservoirs, 

San Diego County, California—Phase One results, 1998–

1999: U.S. Geological Survey Open-File Report 02-186, 

134 p. 

Ogden Environmental and Energy Services, 1997, SR-125 

South Route alternatives: potential air emissions impact on 

Sweetwater Reservoir: San Diego, Calif. [available from 

Sweetwater Authority, 505 Garrett Avenue, Chula Vista, CA 

95912].

Olson, M.C., Iverson, J.L., Furlong, E.T., and Schroeder, M.P., 

2004, Methods of analysis by the U.S. Geological Survey 

National Water Quality Laboratory--Determination of 

polycyclic aromatic hydrocarbon compounds in sediment 

by gas chromatography/mass spectrometry: U.S. Geological Survey Water-Resources Investigations Report 03-4318, 

45 p., accessed March 2003 at http://nwql.usgs.gov/Public/

pubs/WRIR03-4318/WRIR03-4318.pdf.

Pankow, J.F., Luo, Wentai, Isabelle, L.M., Bender, D.A., and 

Baker, R.J., 1998, Determination of a wide range of volatile 

organic compounds in ambient air using multisorbent 

adsorption/ thermal desorption and gas chromatography/

mass spectrometry: Analytical Chemistry, v. 70, no. 24, 

p. 5213–5221.

Sandstrom, M.W., Stroppel, M.E., Foreman, W.T., and Schroeder, M.P., 2001, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of moderate-use pesticides and selected degradates in 

water by C-18 solid-phase extraction and gas chromatography/mass spectrometry: U.S. Geological Survey WaterResources Investigations Report 01-4098, 70 p.

12 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Shelton, L.R., 1994, Field guide for collecting and processing stream-water samples for the National Water-Quality 

Assessment Program: U.S. Geological Survey Open-File 

Report 94-455, 42 p. 

Shelton, L.R., 1997, Field guide for collecting samples for 

analysis of volatile organic compounds in stream water for 

the National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 97-401, 14 p. 

U.S. Environmental Protection Agency, 1999a, Compendium of methods for the determination of toxic organic 

compounds in ambient air (2nd ed), Compendium method 

TO-4A—Determination of pesticides and polychlorinated 

biphenyls in ambient air using high volume polyurethane 

foam (PUF) sampling followed by gas chromatography/

multi-detector detection (GC/MD): Center for Environmental Research Information, Office of Research and Development EPA/625/R-96/010b, 49 p., accessed May 2006 at 

http://www.epa.gov:80/ttnamti1/files/ambient/airtox/to4ar2r.pdf. 

References Cited 13

U.S. Environmental Protection Agency, 1999b, Compendium of methods for the determination of toxic organic 

compounds in ambient air (2nd ed), Compendium method 

TO-13A—Determination of polycyclic aromatic hydrocarbons (PAHs) in ambient air using gas chromatography/mass 

spectrometry (GC/MS): Center for Environmental Research 

Information, Office of Research and Development EPA/625/

R-96/010b, 78 p., accessed May 2006 at http://www.epa.

gov/ttn/amtic/files/ambient/airtox/to-13arr.pdf. 

You, F., and Bidleman, T.F., 1984, Influence of volatility on 

the collection of polycyclic aromatic hydrocarbon vapors 

with polyurethane foam: Environmental Science and Technology, v. 18, p. 330–333. 

Zaugg, S.D., Sandstrom, M.W., Smith, S.G., and Fehlberg, 

K.M., 1995, Methods of analysis by the U.S. Geological 

Survey National Water Quality Laboratory—Determination of pesticides in water by C-18 solid-phase extraction 

and capillary-column gas chromatography/mass spectrometry with selected-ion monitoring: U.S. Geological Survey 

Open-File Report 95-181, 49 p.
Table 1. Site identification numbers, site names, state well numbers, and other identifiers, San Diego County, California. 

[See figure 2 for most site locations. QA, quality assurance; QC, quality control]

Site

 identification No. Site name or state well number Other identifiers

324130117002501 Sweetwater Reservoir near pump tower SWR01

324139117000801 Sweetwater Reservoir near Vista del Lago station SWR02

324131117000101 Sweetwater Reservoir center of minimum pool SWR03

324126116595701 Sweetwater Reservoir near recreation area SWR04

324137116592401 Sweetwater Reservoir minimum pool boundary east SWR05

324209116585001 Sweetwater Reservoir east end reservoir fill boundary SWR06

324147116593501 Sweetwater Reservoir near Gum Tree Cove Pond SWR07

324132117002701 Perdue Treatment Plant−finished water at Sweetwater Reservoir SWR08

324137117002901 Perdue Treatment Plant−imported raw water at Sweetwater Reservoir SWR09

324311116565901 Sweetwater River at low-flow diversion dam above Sweetwater Reservoir LFD

3247031164731011 Loveland Reservoir near dam LLR01

3247371164535011 Loveland Reservoir east end near source inlet LLR02

324141117001601 Sweetwater Reservoir air sampling site

324401116562601 Sweetwater River below Steele Canyon Bridge at Cottonwood Golf Course

3239351170503012 Reynolds Desalination Facility−inflow

3239351170503012 Reynolds Desalination Facility−discharge

3239351170503012 Reynolds Desalination Facility−effluent

3239351170503012 Reynolds Desalination Facility−feed

3239351170505012 17S/2W-28R1 San Diego Formation well # 1

3239371170500012 17S/2W-27N2 San Diego Formation well # 2

3239281170442012 17S/2W-27P1 San Diego Formation well # 3

3239251170437012 17S/2W-27P2 San Diego Formation well # 4

3239351170432012 17S/2W-34C1 San Diego Formation well # 5

3241121170525012 17S/2W-16Q3 National City well #2

3241111170526012 17S/2W-16Q4 National City well #3

888888013 QA/QC site for Sacramento Project Office, California

1

Loveland Reservoir sites located on figure 3.

2

Well sites and desalination facility located on figure 1.

3

Quality control identification number.

14  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California, 1999–2001
Table 2 15

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

Sweetwater Reservoir near pump tower

November 29, 1999 1240 0.1 6.8 8.2 921 16.0

1241 1.0 6.8 8.6 921 15.6

1242 2.0 6.9 8.6 920 15.5

1243 3.0 7.0 8.6 921 15.5

1244 4.0 7.0 8.5 922 15.5

1245 5.0 6.9 8.5 922 15.5

1246 6.0 6.7 8.5 922 15.5

1247 7.0 6.4 8.5 922 15.5

1248 8.0 6.5 8.5 922 15.5

1249 9.0 6.5 8.5 923 15.5

1250 10.0 5.3 8.4 924 15.4

March 13, 2000 1200 0.1 11.6 8.4 833 17.0

1201 1.0 11.0 8.6 830 16.4

1202 2.0 11.0 8.4 829 15.7

1203 3.0 10.1 8.3 825 15.0

1204 4.0 9.1 8.2 825 14.7

1205 5.0 8.6 8.2 825 14.6

1206 6.0 8.4 8.2 826 14.5

1207 7.0 7.8 8.1 825 14.5

1208 8.0 7.5 8.0 826 14.4

1209 9.0 7.0 8.0 825 14.4

1210 10.0 6.8 7.9 826 14.4

1211 11.0 6.6 7.9 826 14.4

1212 12.0 6.5 7.9 826 14.3

1213 13.0 6.1 7.8 827 14.3

1214 13.9 5.1 7.7 924 14.4

June 12, 2000 1120 0.1 8.3 8.4 915 24.8

1121 1.0 8.7 8.5 915 24.3

1122 2.0 8.8 8.5 915 24.1

1123 3.0 8.7 8.5 915 24.0

1124 4.0 8.5 8.5 915 23.8

1125 5.0 1.3 7.7 897 20.8

1126 6.0 0.4 7.7 895 20.5

1127 7.0 0.2 7.7 894 20.2

1128 8.0 0.1 7.8 888 19.6

1129 9.0 0.1 7.8 885 19.4

1130 10.0 0.1 7.8 879 18.7

1131 11.0 0.1 7.8 877 18.1

1132 12.0 0.1 8.1 896 17.9
Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

September 5, 2000 1135 0.1 8.1 8.3 948 25.2

1136 1.0 8.1 8.3 949 25.2

1137 2.0 7.5 8.3 948 24.1

1138 3.0 6.5 8.2 949 23.8

1139 4.0 6.3 8.2 950 23.7

1140 5.0 6.2 8.2 949 23.7

1141 6.0 0.2 8.6 938 22.4

1142 7.0 0.1 7.6 935 22.2

1143 8.0 0.0 7.5 929 21.5

December 4, 2000 1200 0.1 4.3 8.0 992 14.9

1201 1.0 3.8 8.1 995 14.2

1202 2.0 3.3 8.1 996 14.1

1203 3.0 3.2 8.1 998 14.0

1204 4.0 3.0 8.0 999 14.0

1205 5.0 2.9 8.0 999 14.0

1206 6.0 2.8 8.0 999 14.0

1207 7.0 2.6 8.0 999 14.0

1208 7.8 0.5 7.9 1,120 14.3

March 20, 2001 1220 0.1 15.1 8.6 941 19.5

1221 1.0 14.9 8.7 946 18.0

1222 2.0 13.6 8.7 944 17.4

1223 3.0 10.4 8.6 940 15.6

1224 4.0 7.5 8.4 950 14.3

1225 5.0 6.7 8.4 951 14.1

1226 6.0 6.5 8.4 952 14.0

1227 7.0 5.8 8.3 954 13.9

1228 8.0 4.7 8.2 956 13.8

1229 9.0 4.3 8.2 957 13.7

1230 10.0 3.2 8.1 958 13.7

1231 11.0 3.2 8.1 958 13.7

1232 12.0 3.0 8.0 959 13.7

1233 12.8 0.3 8.0 990 13.7

June 6, 2001 0955 0.1 7.8 8.3 1,030 22.4

0956 1.0 7.9 8.3 1,030 22.2

0957 2.0 7.8 8.3 1,030 22.1

1020 3.0 7.8 8.3 1,030 22.1

0958 4.0 7.8 8.3 1,030 22.0

0959 5.0 7.8 8.3 1,030 22.0

1000 6.0 1.9 7.7 983 19.2

1001 7.0 0.3 7.7 968 17.5

1002 8.0 0.2 7.6 967 17.1

1003 9.0 0.1 7.6 966 16.6

1004 11.0 0.2 7.5 966 16.4

1010 10.0 0.2 7.6 966 16.6

1005 12.0 0.1 7.5 966 16.3

1006 12.7 0.1 7.7 1,120 16.2

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]

16  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

September 6, 2001 0930 0.1 ND 8.4 ND 25.0

0931 1.0 ND 8.4 ND 25.1

0932 2.0 ND 8.5 ND 25.0

0933 3.0 ND 8.5 ND 25.0

0934 4.0 ND 8.4 ND 25.0

0935 5.0 ND 7.6 ND 23.0

0936 6.0 ND 7.5 ND 22.7

0937 7.0 ND 7.5 ND 22.4

0938 8.0 ND 7.3 ND 17.7

0939 8.8 ND 7.4 ND 17.4

Sweetwater Reservoir center of minimum pool

November 29, 1999 1310 0.1 8.8 8.7 924 16.3

1311 1.0 8.7 8.7 922 16.3

1312 2.0 7.1 8.5 924 15.6

1313 3.0 6.7 8.5 925 15.5

1314 4.0 6.8 8.5 925 15.5

1315 5.0 6.6 8.5 924 15.5

1316 6.0 6.7 8.5 925 15.5

1317 7.0 6.6 8.5 925 15.5

1318 8.0 6.5 8.4 925 15.4

1319 9.0 6.6 8.4 925 15.4

1320 10.0 6.4 8.4 926 15.3

March 13, 2000 1240 0.1 11.6 8.4 832 17.1

1241 1.0 12.0 8.4 831 16.7

1242 2.0 11.4 8.3 824 15.7

1243 3.0 10.8 8.2 826 15.3

1244 4.0 9.6 8.1 824 14.8

1245 5.0 9.2 8.0 825 14.7

1246 6.0 8.9 8.0 825 14.6

1247 7.0 8.1 7.9 825 14.5

1248 8.0 8.0 7.9 825 14.5

1249 9.0 7.4 7.8 827 14.4

1250 10.0 6.7 7.8 830 14.4

1251 11.0 6.6 7.8 829 14.4

1252 12.0 6.3 7.8 829 14.3

1253 13.0 6.2 7.7 829 14.3

1254 14.0 5.9 7.7 829 14.3

1255 15.0 5.3 7.7 829 14.3

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]

Table 2 17
18  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

June 12, 2000 1220 0.1 8.3 8.5 917 24.9

1221 1.0 8.4 8.5 916 24.9

1222 2.0 8.5 8.5 916 24.5

1223 3.0 8.2 8.5 915 24.0

1224 4.0 6.1 8.4 916 23.3

1225 5.0 1.2 7.8 905 21.6

1226 6.0 0.7 7.8 900 21.2

1227 7.0 0.6 7.8 892 20.2

1228 8.0 0.4 7.8 889 19.8

1229 9.0 0.3 7.8 879 18.7

1230 10.0 0.1 7.8 879 18.6

1231 11.0 0.2 7.8 877 18.3

1232 12.0 0.1 7.8 875 17.9

1233 13.0 0.1 7.8 876 17.7

September 5, 2000 1225 0.1 8.3 8.6 946 25.4

1226 1.0 8.2 8.6 947 24.8

1227 2.0 6.8 8.6 947 24.0

1228 3.0 6.3 8.5 947 23.9

1229 4.0 6.1 8.5 948 23.8

1230 5.0 6.1 8.5 949 23.7

1231 6.0 0.2 8.0 942 23.0

1232 7.0 0.1 7.8 934 22.1

1233 8.0 0.0 7.7 921 20.2

1234 9.0 0.0 7.7 920 19.5

1235 10.0 0.1 7.7 924 19.2

December 4, 2000 1230 0.1 3.7 8.1 999 14.8

1231 1.0 3.7 8.1 996 14.8

1232 2.0 3.6 8.2 995 14.2

1233 3.0 3.5 8.2 995 14.1

1234 4.0 3.4 8.2 995 14.1

1235 5.0 3.4 8.2 996 14.0

1236 6.0 3.1 8.2 997 14.0

1237 7.0 2.7 8.1 999 14.0

1238 8.0 2.2 8.1 998 14.0

1239 8.3 0.5 8.2 1,000 14.0

March 20, 2001 1314 4.0 8.4 8.6 944 14.7

1315 5.0 7.8 8.5 948 14.3

1316 6.0 7.1 8.4 951 14.2

1317 7.0 6.4 8.4 952 14.1

1318 8.0 5.3 8.3 954 13.9

1319 9.0 5.1 8.3 955 13.8

1320 10.0 5.1 8.3 955 13.8

1321 11.0 4.2 8.2 956 13.7

1322 12.0 3.6 8.2 957 13.7

1323 13.0 2.9 8.2 958 13.7

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]
Table 2 19

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

September 6, 2001 1005 0.1 ND 8.7 ND 25.6

1006 1.0 ND 8.7 ND 25.5

1007 2.0 ND 8.7 ND 25.4

1008 3.0 ND 8.6 ND 25.2

1009 4.0 ND 8.1 ND 24.7

1010 5.0 ND 7.7 ND 24.1

1011 6.0 ND 7.5 ND 22.9

1012 7.0 ND 7.5 ND 20.3

1013 8.0 ND 7.4 ND 18.3

1014 9.0 ND 7.3 ND 17.6

1015 9.7 ND 7.4 ND 17.4

Sweetwater Reservoir east end reservoir fill boundary

November 29, 1999 1350 0.1 9.8 8.8 921 16.6

1351 1.0 10.1 8.8 921 16.6

1352 2.0 10.3 8.8 922 16.6

1353 2.7 9.2 8.7 923 16.3

1400

March 13, 2000 1310 0.1 12.7 8.3 849 18.1

1311 1.0 13.1 8.3 849 18.1

1312 2.0 12.5 8.3 859 17.8

1313 3.0 10.3 7.7 843 15.4

June 12, 2000 1330 0.1 8.4 8.4 921 25.8

1331 1.0 8.4 8.4 920 25.8

September 5, 2000 1255 0.1 9.0 8.4 946 25.8

1256 0.8 8.9 8.4 947 25.7

March 20, 2001 1400 1.0 ND ND ND ND

June 6, 2001 1039 0.1 7.7 8.3 1,040 23.6

1040 1.0 7.2 8.3 1,040 23.4

1042 1.9 6.2 8.2 1,030 22.6

September 6, 2001 1045 0.1 ND 8.6 ND 25.9

1046 0.5 ND 8.6 ND 25.9

Sweetwater River at low-flow diversion above Sweetwater Reservoir

November 29, 1999 1630 ND ND ND ND ND

January 29, 2000 0245 ND 8.5 7.9 2,590 11.3

January 29, 2000 1445 ND 7.8 8.0 2,690 12.3

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]
20 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

January 30, 2000 0200 ND 10.0 8.0 1,040 11.9

January 30, 2000 1405 ND 11.7 8.1 784 13.3

March 13, 2000 1500 ND ND ND ND ND

June 12, 2000 1630 ND ND ND ND ND

September 5, 2000 1520 ND ND ND ND ND

December 4, 2000 1420 ND ND ND ND ND

March 20, 2001 1600 ND ND ND ND ND

June 5, 2001 1500 ND 6.7 7.7 2,590 20.8

September 6, 2001 1615 ND ND ND ND ND

Loveland Reservoir near dam

November 30, 1999 0950 0.1 7.5 8.2 471 14.9

0951 1.0 7.3 8.1 471 14.9

0952 2.0 7.4 8.2 471 14.8

0953 3.0 7.3 8.2 472 14.7

0954 4.0 7.2 8.2 471 14.7

0955 5.0 7.1 8.2 472 14.7

0956 6.0 7.2 8.2 471 14.6

0957 7.0 7.1 8.1 472 14.6

0958 8.0 7.1 8.1 472 14.6

0959 9.0 7.2 8.1 472 14.6

1000 10.0 7.2 8.1 472 14.6

1001 12.0 7.2 8.1 472 14.6

1002 14.0 7.2 8.1 471 14.6

1003 16.0 0.5 7.5 412 12.2

1004 18.0 0.4 7.5 410 11.9

1005 20.0 0.3 7.4 411 11.7

1006 22.0 0.2 7.4 412 11.7

1007 24.0 0.2 7.4 411 11.6

1008 26.0 0.3 7.4 412 11.6

1009 28.0 0.2 7.4 412 11.6

1010 30.0 0.1 7.3 412 11.6

1011 32.0 0.1 7.3 411 11.6

1012 34.0 0.1 7.3 411 11.6

1013 36.0 0.1 7.3 412 11.6

1014 38.0 0.1 7.3 411 11.6

1015 38.9 0.1 7.0 603 11.7

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]
Table 2 21

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

March 14, 2000 0935 0.1 11.2 8.2 486 15.3

0936 1.0 10.9 8.3 487 15.2

0937 2.0 11.2 8.3 486 14.4

0938 3.0 10.9 8.3 485 14.3

0939 4.0 10.8 8.3 485 14.2

0940 5.0 10.1 8.1 484 13.5

0941 6.0 8.9 7.8 483 12.8

0942 7.0 7.7 7.8 480 12.7

0943 8.0 7.2 7.7 481 12.5

0944 9.0 6.9 7.7 481 12.5

0945 10.0 6.8 7.7 481 12.5

0946 12.0 6.8 7.7 481 12.4

0947 14.0 6.8 7.7 480 12.4

0948 16.0 6.8 7.6 480 12.4

0949 18.0 6.7 7.6 481 12.4

0950 20.0 6.4 7.6 481 12.4

0951 22.0 6.5 7.5 481 12.4

0952 24.0 6.5 7.5 481 12.4

0953 26.0 6.4 7.5 481 12.4

0954 28.0 6.3 7.5 481 12.4

0955 29.0 6.0 7.5 479 12.3

June 13, 2000 0930 0.1 8.2 8.6 207 23.2

0931 1.0 8.3 8.6 522 23.1

0932 2.0 8.3 8.6 522 23.1

0933 3.0 8.2 8.6 521 23.1

0934 4.0 8.2 8.6 521 23.0

0935 5.0 8.0 8.6 522 22.9

0936 6.0 2.6 7.8 517 20.8

0937 7.0 0.5 7.7 502 17.3

0938 8.0 0.5 7.7 493 15.9

0939 9.0 0.2 7.7 490 14.7

0940 10.0 0.1 7.8 486 13.6

0941 12.0 0.0 7.8 483 13.0

0942 14.0 0.1 7.8 483 12.8

0943 16.0 0.1 7.8 483 12.7

0944 18.0 0.0 7.8 484 12.7

0945 20.0 0.0 7.8 483 12.6

0946 22.0 0.1 7.8 481 12.6

0947 24.0 0.0 7.7 485 12.6

0948 26.0 0.0 7.7 487 12.5

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]
22 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

September 6, 2000 0925 0.1 7.5 8.3 522 23.3

0926 1.0 7.4 8.3 523 23.2

0927 2.0 7.3 8.3 523 23.2

0928 3.0 7.3 8.3 523 23.1

0929 4.0 7.3 8.3 523 23.1

0930 5.0 7.1 8.3 523 23.1

0931 6.0 7.2 8.3 523 23.1

0932 7.0 7.0 8.3 523 23.0

0933 8.0 1.4 7.5 507 19.9

0934 9.0 0.1 7.5 500 16.5

0935 10.0 0.1 7.5 493 15.0

0936 12.0 0.1 7.7 487 13.4

0937 14.0 0.1 7.7 486 13.0

0938 16.0 0.0 7.7 488 12.8

0939 18.0 0.0 7.7 489 12.8

0940 20.0 0.1 7.7 489 12.7

0941 22.0 0.1 7.7 488 12.7

0942 24.0 0.1 7.7 491 12.6

0943 26.0 0.0 7.6 492 12.6

0944 27.0 0.0 7.6 527 12.6

December 5, 2000 0950 0.1 6.6 8.0 513 13.4

0951 1.0 6.5 8.1 515 13.2

0952 2.0 6.4 8.1 515 13.1

0953 3.0 6.2 8.1 515 13.0

0954 4.0 6.1 8.1 516 12.9

0955 5.0 5.8 8.1 516 12.8

0956 6.0 5.7 8.1 516 12.8

0957 7.0 5.6 8.0 516 12.7

0958 8.0 5.5 8.0 515 12.7

0959 9.0 5.5 8.0 516 12.7

1000 10.0 5.5 8.0 515 12.7

1001 12.0 5.4 8.0 516 12.7

1002 14.0 5.4 7.9 516 12.7

1003 16.0 5.4 7.9 516 12.6

1004 18.0 5.4 7.9 515 12.6

1005 20.0 5.3 7.9 517 12.6

1006 22.0 5.3 7.9 515 12.6

1007 24.0 5.4 7.8 515 12.6

1008 26.0 5.4 7.8 515 12.6

1009 28.0 5.2 7.8 516 12.6

1010 28.2 1.1 7.5 549 12.6

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]
Table 2 23

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

March 21, 2001 1100 0.1 12.4 8.2 537 17.4

1101 1.0 12.7 8.4 535 17.4

1102 2.0 13.0 8.5 536 16.7

1103 3.0 12.5 8.4 535 14.5

1104 4.0 11.0 8.3 534 12.7

1105 5.0 9.9 8.3 533 12.3

1106 6.0 8.5 8.2 532 11.6

1107 7.0 7.7 8.1 533 11.2

1108 8.0 6.7 8.1 532 11.0

1109 9.0 6.3 8.1 533 10.9

1110 10.0 5.6 8.0 533 10.8

1111 12.0 5.3 8.0 533 10.8

1112 14.0 5.1 8.0 532 10.7

1113 16.0 5.0 8.0 532 10.6

1114 18.0 4.9 7.9 532 10.6

1115 20.0 4.7 7.9 532 10.6

1116 22.0 4.8 7.9 532 10.5

1117 24.0 4.8 7.8 531 10.5

1118 26.0 4.6 7.8 531 10.5

1119 28.0 4.7 7.8 531 10.4

1120 29.0 0.3 7.4 640 10.5

June 5, 2001 1110 0.1 11.0 9.4 490 23.1

1111 1.0 10.9 9.3 494 23.0

1140 2.0 10.1 9.3 488 22.2

1112 3.0 9.5 9.3 485 22.1

1113 4.0 9.3 9.3 486 21.9

1114 5.0 0.2 7.8 540 15.4

1115 10.0 0.1 7.7 537 11.8

1116 20.0 0.0 7.5 536 11.1

1117 25.0 0.0 7.5 535 11.0

1118 28.0 0.0 7.3 544 11.0

1130 15.0 0.0 7.6 538 11.2

September 6, 2001 1415 0.1 ND 10.0 ND 26.1

1416 1.0 ND 9.5 ND 25.5

1417 2.0 ND 9.4 ND 25.2

1418 3.0 ND 9.1 ND 24.1

1419 4.0 ND 9.0 ND 24.0

1420 5.0 ND 7.8 ND 21.0

1421 6.0 ND 7.4 ND 17.5

1422 7.0 ND 7.3 ND 15.0

1423 8.0 ND 7.3 ND 13.9

1424 9.0 ND 7.3 ND 13.1

1425 10.0 ND 7.3 ND 12.3

1426 12.0 ND 7.2 ND 11.8

1427 14.0 ND 7.2 ND 11.5

1428 16.0 ND 7.2 ND 11.5

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]
24  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001

Date Time

Sampling

depth

(m)

(00098) 

Oxygen, 

dissolved

(mg/L)

(00300)

pH, water 

whole field

(standard 

units)

(00400)

Specific 

conductance 

(mS/cm)

(00095)

Water 

temperature

(

o

C)

(00010)

1429 18.0 ND 7.2 ND 11.4

1430 20.0 ND 7.2 ND 11.4

1431 22.0 ND 7.2 ND 11.3

1432 24.0 ND 7.2 ND 11.3

1433 26.0 ND 7.2 ND 11.3

1434 28.0 ND 7.2 ND 11.3

1435 29.0 ND 7.1 ND 11.3

Sweetwater River below Steele Canyon Bridge at Cottonwood Golf Course

January 29, 2000 1000 ND ND 8.4 2,750 11.2

Table 2. Water-quality depth-profile field data for Sweetwater and Loveland Reservoir sampling sites and for Sweetwater River above 

Sweetwater Reservoir, San Diego County, California—Continued. 

[Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property; m, meter; mg/L, milligram per liter; 

mS/cm, microsiemens per centimeter; oC, degree Celsius; ND, no data]
Site name Date (mm/dd/yyyy) Time

1,1,1,2-Tetrachloroethane

(77562)

1,1,1-Trichloroethane

(34506)

1,1,2,2-Tetrachloroethane

(34516)

1,1,2-Trichlorotrifluoroethane

(77652)

1,1,2-Trichloroethane

(34511)

1,1-Dichloro

ethane

(34496)

1,1-Dichloro

ethylene

(34501)

1,1-Dichloropropene

(77168) 

[LRL] [0.03] [0.03] [0.09] [0.06] [0.06] [0.07] [0.04] [0.03]

SWR near pump tower 11/29/1999 1300 — — — — — — — —

03/13/2000 1220 — — — — — — — —06/12/2000 1140 — — — — — — — —06/12/2000 1150 — — — — — — — —09/05/2000 1150 — — — — — — — —12/04/2000 1220 — — — — — — — —03/20/2001 1240 — — — — — — — —03/20/2001 1250 — — — — — — — —06/06/2001 1010 — — — — — — — —06/06/2001 1020 — — — — — — — —09/06/2001 0940 — — — — — — — —

SWR center of minimum pool 11/29/1999 1330 — — — — — — — —

03/13/2000 1300 — — — — — — — —06/12/2000 1240 — — — — — — — —06/12/2000 1250 — — — — — — — —09/05/2000 1240 — — — — — — — —12/04/2000 1250 — — — — — — — —03/20/2001 1330 — — — — — — — —09/06/2001 1020 — — — — — — — —

Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in Sweetwater and Loveland Reservoirs, San Diego County, California. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Table 3  25
Site name Date (mm/dd/yyyy) Time

1,1,1,2-Tetrachloroethane

(77562)

1,1,1-Trichloroethane

(34506)

1,1,2,2-Tetrachloroethane

(34516)

1,1,2-Trichlorotrifluoroethane

(77652)

1,1,2-Trichloroethane

(34511)

1,1-Dichloro

ethane

(34496)

1,1-Dichloro

ethylene

(34501)

1,1-Dichloropropene

(77168) 

[LRL] [0.03] [0.03] [0.09] [0.06] [0.06] [0.07] [0.04] [0.03]

SWR east end reservoir fill 

boundary

11/29/1999 1400

—

—

—

—

—

—

—

—

06/12/2000 1340

—

—

—

—

—

—

—

—

09/05/2000 1300

—

—

—

—

—

—

—

—

03/20/2001 1400

—

—

—

—

—

—

—

—

06/06/2001 1040

—

—

—

—

—

—

—

—

09/06/2001 1050

—

—

—

—

—

—

—

—

Loveland reservoir near dam 11/30/1999 1020

—

—

—

—

—

—

—

—

11/30/1999 1030

—

—

—

—

—

—

—

—

03/14/2000 1000

—

—

—

—

—

—

—

—

03/14/2000 1020

—

—

—

—

—

—

—

—

06/13/2000 0950

—

—

—

—

—

—

—

—

06/13/2000 1000

—

—

—

—

—

—

—

—

09/06/2000 0950

—

—

—

—

—

—

—

—

09/06/2000 1000

—

—

—

—

—

—

—

—

12/05/2000 1020

—

—

—

—

—

—

—

—

03/21/2001 1130

—

—

—

—

—

—

—

—

06/05/2001 1130

—

—

—

—

—

—

—

—

06/05/2001 1140

—

—

—

—

—

—

—

—

09/06/2001 1440

—

—

—

—

—

—

—

—

09/06/2001 1450

—

—

—

—

—

—

—

—

Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

26  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Site name Date (mm/dd/yyyy) Time

1,1,1,2-Tetrachloroethane

(77562)

1,1,1-Trichloroethane

(34506)

1,1,2,2-Tetrachloroethane

(34516)

1,1,2-Trichlorotrifluoroethane

(77652)

1,1,2-Trichloroethane

(34511)

1,1-Dichloro

ethane

(34496)

1,1-Dichloro

ethylene

(34501)

1,1-Dichloropropene

(77168) 

[LRL] [0.03] [0.03] [0.09] [0.06] [0.06] [0.07] [0.04] [0.03]

Sweetwater River at low-flow 

diversion above SWR

11/29/1999 1630 — — — — — — — —03/13/2000 1500 — — — — — — — —06/12/2000 1630 — — — — — — — —09/05/2000 1520 — — — — — — — —12/04/2000 1420 — — — — — — — —03/20/2001 1600 — — — — — — — —06/05/2001 1500 — — — — — — — —09/06/2001 1615 — — — — — — — —

Perdue Treatment Plant—

finished water at SWR

11/29/1999 1530 — E0.02 — — — — — —03/13/2000 1600 — — — — — — — —06/12/2000 1710 — — — — — — — —09/05/2000 1400 — M — — — — — —12/04/2000 1510 — — — — — — — —03/20/2001 1430 — — — — — — — —06/05/2001 1420 — — — — — — — —09/06/2001 1230 — E0.02 — — — — — —

Perdue Treatment Plant—

imported raw water at SWR

11/30/1999 1340 — E0.01 — — — — — —09/05/2000 1600 — 0.97 — — — E0.03 0.31 —03/20/2001 1500 — — — — — — — —09/06/2001 1300 — E0.09 — — — — E0.02 —

Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Table 3  27
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

1,2,3,4-Tetramethylbenzene

(49999)

Isodurene

(50000) 

1,2,3-Trichlorobenzene

(77613)

1,2,3-Trichloropropane 

(77443)

 1,2,3-Trimethylbenzene 

(77221)

 1,2,4-Trichlorobenzene

(34551)

1,2,4-Trimethylbenzene

(77222)

1,2-Dibromo-3-chloropropane 

(82625)

1,2-Dibromoethane 

(77651)

1,2-Dichlorobenzene

(34536)

1,2-Dichloro

ethane 

(32103)

[LRL] [0.2] [0.2] [0.3] [0.16] [0.1] [0.2] [0.06] [0.2] [0.04] [0.05] [0.1]

SWR near pump tower

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

SWR center of minimum pool

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

28  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

1,2,3,4-Tetramethylbenzene

(49999)

Isodurene

(50000) 

1,2,3-Trichlorobenzene

(77613)

1,2,3-Trichloropropane 

(77443)

 1,2,3-Trimethylbenzene 

(77221)

 1,2,4-Trichlorobenzene

(34551)

1,2,4-Trimethylbenzene

(77222)

1,2-Dibromo-3-chloropropane 

(82625)

1,2-Dibromoethane 

(77651)

1,2-Dichlorobenzene

(34536)

1,2-Dichloro

ethane 

(32103)

[LRL] [0.2] [0.2] [0.3] [0.16] [0.1] [0.2] [0.06] [0.2] [0.04] [0.05] [0.1]

SWR east end reservoir fill 

boundary

— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —

Loveland reservoir near dam — — — — — — — — — — —

— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —

Table 3  29
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

1,2,3,4-Tetramethylbenzene

(49999)

Isodurene

(50000) 

1,2,3-Trichlorobenzene

(77613)

1,2,3-Trichloropropane 

(77443)

 1,2,3-Trimethylbenzene 

(77221)

 1,2,4-Trichlorobenzene

(34551)

1,2,4-Trimethylbenzene

(77222)

1,2-Dibromo-3-chloropropane 

(82625)

1,2-Dibromoethane 

(77651)

1,2-Dichlorobenzene

(34536)

1,2-Dichloro

ethane 

(32103)

[LRL] [0.2] [0.2] [0.3] [0.16] [0.1] [0.2] [0.06] [0.2] [0.04] [0.05] [0.1]

Sweetwater River at low-flow 

diversion above SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—

finished water at SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—

imported raw water at SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

30 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

1,2-Dichloropropane

(34541) 

1,3,5-

Trimethylbenzene

(77226)

1,3-Dichlorobenzene

(34566)

1,3-Dichloropropane

(77173)

1,4-Dichlorobenzene

(34571)

2,2-Dichloropropane

(77170) 

2-Chlorotoluene

(77275)

o-Ethyl 

toluene

(77220)

3-Chloropropane

(78109)

4-Chlorotoluene

(77277)

[LRL] [0.07] [0.04] [0.05] [0.1] [0.05] [0.05] [0.04] [0.06] [0.2] [0.06]

SWR near pump tower — — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

SWR center of minimum pool — — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

Table 3  31
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

1,2-Dichloropropane

(34541) 

1,3,5-

Trimethylbenzene

(77226)

1,3-Dichlorobenzene

(34566)

1,3-Dichloropropane

(77173)

1,4-Dichlorobenzene

(34571)

2,2-Dichloropropane

(77170) 

2-Chlorotoluene

(77275)

o-Ethyl 

toluene

(77220)

3-Chloropropane

(78109)

4-Chlorotoluene

(77277)

[LRL] [0.07] [0.04] [0.05] [0.1] [0.05] [0.05] [0.04] [0.06] [0.2] [0.06]

SWR east end reservoir fill 

boundary

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Loveland reservoir near dam

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

32 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

1,2-Dichloropropane

(34541) 

1,3,5-

Trimethylbenzene

(77226)

1,3-Dichlorobenzene

(34566)

1,3-Dichloropropane

(77173)

1,4-Dichlorobenzene

(34571)

2,2-Dichloropropane

(77170) 

2-Chlorotoluene

(77275)

o-Ethyl 

toluene

(77220)

3-Chloropropane

(78109)

4-Chlorotoluene

(77277)

[LRL] [0.07] [0.04] [0.05] [0.1] [0.05] [0.05] [0.04] [0.06] [0.2] [0.06]

Sweetwater River at low-flow 

diversion above SWR

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

Perdue Treatment Plant—

finished water at SWR

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

Perdue Treatment Plant—

imported raw water at SWR

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

Table 3  33
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

4-Isopropyl-1-

methylbenzene

(isopropyltoluene)

(77356)

Acetone

(81552)

Acrylonitrile

(34215) 

Benzene

(34030)

Bromobenzene

(81555)

Bromochloromethane

(77297)

Bromodichloromethane

(32101)

Bromoethene 

(50002)

Bromomethane

(34413) 

Carbon 

disulfide

(77041)

Chlorobenzene

(34301)

[LRL] [0.07] [7] [1] [0.04] [0.04] [0.04] [0.05] [0.1] [0.3] [0.07] [0.03]

SWR near pump tower

—

—

—

—

—

— 1.07

—

—

—

—

—

—

—

—

—

— 0.77

—

—

—

—

—

—

— E0.01

— E0.05

—

—

— E0.04

—

—

—

—

—

—

— 0.13

—

—

—

—

—

—

—

—

—

— 0.66

—

—

—

—

—

—

— E0.01

—

— 0.53

—

—

—

—

—

—

—

—

—

— 0.13

—

—

—

—

—

—

— E0.01

—

— 0.22

—

—

—

—

—

—

—

—

— E0.02 E0.03

—

—

—

—

—

—

—

—

—

— 0.10

—

— E0.01

—

—

—

—

—

— 0.10 0.15

—

—

—

—

SWR center of minimum pool

—

—

— E0.01

—

— 0.32

—

—

—

—

—

—

—

—

—

— 0.13

—

—

—

—

—

—

—

—

— E0.08

—

—

—

—

—

—

—

—

—

—

— 0.10

—

—

—

—

—

—

—

—

—

— 0.26

—

—

—

—

—

—

— E0.01

—

— 0.14

—

— E0.02

—

—

—

—

—

—

— 0.22

—

—

—

—

—

—

—

—

— 0.16 E0.09

—

— E0.02

—

34  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

4-Isopropyl-1-

methylbenzene

(isopropyltoluene)

(77356)

Acetone

(81552)

Acrylonitrile

(34215) 

Benzene

(34030)

Bromobenzene

(81555)

Bromochloromethane

(77297)

Bromodichloromethane

(32101)

Bromoethene 

(50002)

Bromomethane

(34413) 

Carbon 

disulfide

(77041)

Chlorobenzene

(34301)

[LRL] [0.07] [7] [1] [0.04] [0.04] [0.04] [0.05] [0.1] [0.3] [0.07] [0.03]

SWR east end reservoir fill 

boundary

— — — — — — 0.25 — — — —— — — — — — E0.06 — — — —— — — — — — 0.14 — — — —— — — E0.01 — — 0.12 — — — —— — — M — — E0.03 — — — —— — — — — — — — — E0.02 —

Loveland reservoir near dam — — — — — — — — — — —

— — — — — — — — — — —— — — — — — — — — — —— — — E0.01 — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — E0.01 — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— E5.2 — E0.01 — — — — — E0.02 —— — — — — — — — — E0.13 —— — — — — — — — — — —

Table 3  35
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

4-Isopropyl-1-

methylbenzene

(isopropyltoluene)

(77356)

Acetone

(81552)

Acrylonitrile

(34215) 

Benzene

(34030)

Bromobenzene

(81555)

Bromochloromethane

(77297)

Bromodichloromethane

(32101)

Bromoethene 

(50002)

Bromomethane

(34413) 

Carbon 

disulfide

(77041)

Chlorobenzene

(34301)

[LRL] [0.07] [7] [1] [0.04] [0.04] [0.04] [0.05] [0.1] [0.3] [0.07] [0.03]

Sweetwater River at low-flow 

diversion above SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.03

—

—

—

—

—

—

—

—

—

— E0.09

—

—

—

—

—

—

—

—

—

— E0.08

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.06

—

—

—

—

—

—

—

—

—

— E0.08

—

Perdue Treatment Plant—

finished water at SWR

— 7.1

—

—

—

— 18.7

—

—

— E0.01

— E5.5

—

—

—

— 41.1

—

— E0.04

—

—

—

—

—

—

— E46.3

—

—

—

—

— 13

— E0.01

— E0.09 62.9

—

— E0.03

—

— E4.0

— E0.02

—

— 21.6

—

— E0.03

—

— E5.4

—

—

—

— 4.67

—

—

—

—

—

—

—

—

—

— 27.5

—

—

—

—

—

—

—

—

—

— 66.6

—

—

—

—

Perdue Treatment Plant—

imported raw water at SWR

—

—

—

—

—

— E0.08

—

—

—

—

—

—

—

—

—

— 0.10

—

—

—

—

—

—

—

—

—

— 0.22

—

—

—

—

—

—

—

—

—

— 0.17

—

—

—

—

36  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Chloroethane

(34311)

Chloromethane

(34418)

cis-1,2-

Dichloroethylene

(77093)

cis-1,3-

Dichloropropene 

(34704)

Dibromochloromethane

(32105)

Dibromomethane 

(30217)

Dichlorodifluoromethane

(34668)

Dichloromethane

(34423)

Diethyl 

ether

(81576)

Diisopropyl 

ether

(81577)

Ethyl 

methacrylate

(73570)

2-Butanone

(81595)

[LRL] [0.1] [0.5] [0.04] [0.09] [0.2] [0.05] [0.27] [0.4] [0.2] [0.1] [0.2] [1.6]

SWR near pump tower — — — — 0.9 — — — — — — —

— — — — 0.6 — — M — — — —— — — — — — — E0.1 — — — —

— — — — E0.1 — — — — — — —— M — — 0.7 — — — — — — —— — — — 0.4 — — M — — — —— — — — E0.1 — — — — — — —— — — — 0.2 — — — — — — —— — — — — — — M — — — —— — — — E0.1 — — — — — — —— — — — — — — E0.1 — — — —

SWR center of minimum pool — — — — 0.3 — — — — — — —

— — — — E0.1 — — — — — — —— — — — — — — E0.1 — — — —— — — — E0.1 — — — — — — —

— M — — 0.3 — — — — — — —— — — — E0.1 — — — — — — —— — — — 0.2 — — — — — — —— — — — — — — E0.1 — — — —

Table 3  37
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Chloroethane

(34311)

Chloromethane

(34418)

cis-1,2-

Dichloroethylene

(77093)

cis-1,3-

Dichloropropene 

(34704)

Dibromochloromethane

(32105)

Dibromomethane 

(30217)

Dichlorodifluoromethane

(34668)

Dichloromethane

(34423)

Diethyl 

ether

(81576)

Diisopropyl 

ether

(81577)

Ethyl 

methacrylate

(73570)

2-Butanone

(81595)

[LRL] [0.1] [0.5] [0.04] [0.09] [0.2] [0.05] [0.27] [0.4] [0.2] [0.1] [0.2] [1.6]

SWR east end reservoir fill 

boundary

—

—

—

— 0.3

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.2

—

—

—

—

—

—

—

—

—

—

— E0.1

—

—

—

—

—

—

—

—

—

—

—

M

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Loveland reservoir near dam

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

38  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Chloroethane

(34311)

Chloromethane

(34418)

cis-1,2-

Dichloroethylene

(77093)

cis-1,3-

Dichloropropene 

(34704)

Dibromochloromethane

(32105)

Dibromomethane 

(30217)

Dichlorodifluoromethane

(34668)

Dichloromethane

(34423)

Diethyl 

ether

(81576)

Diisopropyl 

ether

(81577)

Ethyl 

methacrylate

(73570)

2-Butanone

(81595)

[LRL] [0.1] [0.5] [0.04] [0.09] [0.2] [0.05] [0.27] [0.4] [0.2] [0.1] [0.2] [1.6]

Sweetwater River at low-flow 

diversion above SWR

— — E0.05 — — — — — — — — —— — E0.02 — — — E0.03 — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — E0.04 — — — E0.08 — — — — —— — — — — — — — — — — —— — — — — — E0.06 — — — — —— — — — — — — — — — — —

Perdue Treatment Plant—

finished water at SWR

— E0.3 — — 13.7 — — E0.1 — — — —

— E0.2 — — 36.6 — — M — — — —— E0.2 — — E46.7 — — E0.2 — — — —

E0.1 E0.4 — — 60.1 — — E0.3 — — — —

— E0.1 — — 22.2 — — — — — — —— E0.2 — — 3.1 — — — — — — —— E0.1 — — 31.0 — — — — — — —— E0.3 — — 61.1 — — — — — — —

Perdue Treatment Plant—

imported raw water at SWR

— — — — — — — — — — — —— — — — — — — — — — — —— — — — E0.1 — — — — — — —— — — — — — — — — — — —

Table 3  39
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Ethylbenzene

(34371)

Hexachlorobutadiene

(39702) 

Hexachloroethane 

(34396)

Methyl 

iodide 

(77424)

4-Methyl-2-

pentanone

(78133) 

Isopropylbenzene

(77223) 

Ethyl acrylonitrile 

(81593)

Methyl 

acrylate

(49991) 

Methyl methacrylate

(81597)

tert-Pentyl 

methyl ether

(50005)

[LRL] [0.03] [0.1] [0.2] [0.12] [0.4] [0.03] [0.6] [1.4] [0.3] [0.11]

SWR near pump tower

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

SWR center of minimum pool

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

40 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Ethylbenzene

(34371)

Hexachlorobutadiene

(39702) 

Hexachloroethane 

(34396)

Methyl 

iodide 

(77424)

4-Methyl-2-

pentanone

(78133) 

Isopropylbenzene

(77223) 

Ethyl acrylonitrile 

(81593)

Methyl 

acrylate

(49991) 

Methyl methacrylate

(81597)

tert-Pentyl 

methyl ether

(50005)

[LRL] [0.03] [0.1] [0.2] [0.12] [0.4] [0.03] [0.6] [1.4] [0.3] [0.11]

SWR east end reservoir fill 

boundary

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

Loveland reservoir near dam — — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

Table 3  41
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Ethylbenzene

(34371)

Hexachlorobutadiene

(39702) 

Hexachloroethane 

(34396)

Methyl 

iodide 

(77424)

4-Methyl-2-

pentanone

(78133) 

Isopropylbenzene

(77223) 

Ethyl acrylonitrile 

(81593)

Methyl 

acrylate

(49991) 

Methyl methacrylate

(81597)

tert-Pentyl 

methyl ether

(50005)

[LRL] [0.03] [0.1] [0.2] [0.12] [0.4] [0.03] [0.6] [1.4] [0.3] [0.11]

Sweetwater River at low-flow 

diversion above SWR

E0.01

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—

finished water at SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—

imported raw water at SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

42 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

m- and pXylene

(85795)

Naphthalene

(34696) 

2-Hexanone

(77103)

n-Butylbenzene

(77342)

n-Propylbenzene

(77224)

o-Xylene

(77135)

sec-Butylbenzene

(77350)

Styrene

(77128)

Ethyl tert-butyl 

ether

(50004)

Methyl tertbutyl ether 

(MTBE)

(78032)

[LRL] [0.06] [0.2] [0.7] [0.2] [0.04] [0.04] [0.04] [0.03] [0.04] [0.05]

SWR near pump tower — — — — — — — — — 0.3

— — — — — — — — — E0.1— — — — — — — — — E0.1

— — — — — — — — — M— — — — — — — — — —— — — — — — — — — 0.2— — — — — — — — — 0.2— — — — — — — — — 0.2— — — — — — — — — E0.1

— — — — — — — — — M— — — — — — — — — —

SWR center of minimum pool — — — — — — — — — 0.2

— — — — — — — — — E0.1

— — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — 0.2— — — — — — — — — 0.2— — — — — — — — — —

Table 3  43
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

m- and 

pXylene

(85795)

Naphthalene

(34696) 

2-Hexanone

(77103)

n-Butylbenzene

(77342)

n-Propylbenzene

(77224)

o-Xylene

(77135)

sec-Butylbenzene

(77350)

Styrene

(77128)

Ethyl tert-butyl 

ether

(50004)

Methyl tertbutyl ether 

(MTBE)

(78032)

[LRL] [0.06] [0.2] [0.7] [0.2] [0.04] [0.04] [0.04] [0.03] [0.04] [0.05]

SWR east end reservoir fill 

boundary

—

—

—

—

—

—

—

—

— 0.3

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.1

E0.02

—

—

—

—

—

—

—

— 0.2

—

—

—

—

—

—

—

—

—

M

—

—

—

—

—

—

—

—

—

—

Loveland reservoir near dam

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— 0.2

—

—

—

—

—

—

—

—

— 0.3

—

—

—

—

—

—

—

—

— 0.3

—

—

—

—

—

—

—

—

— E0.1

—

—

—

—

—

—

—

—

— 0.2

—

—

—

—

—

—

—

—

— E0.1

—

—

—

—

—

—

—

—

— E0.1

—

—

—

—

—

—

—

—

— 0.2

—

—

—

—

—

—

—

—

— E0.2

—

—

—

—

—

—

—

—

— E0.1

E0.02

—

—

—

—

—

—

—

—

M

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

44  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

m- and pXylene

(85795)

Naphthalene

(34696) 

2-Hexanone

(77103)

n-Butylbenzene

(77342)

n-Propylbenzene

(77224)

o-Xylene

(77135)

sec-Butylbenzene

(77350)

Styrene

(77128)

Ethyl tert-butyl 

ether

(50004)

Methyl tertbutyl ether 

(MTBE)

(78032)

[LRL] [0.06] [0.2] [0.7] [0.2] [0.04] [0.04] [0.04] [0.03] [0.04] [0.05]

Sweetwater River at low-flow 

diversion above SWR

— — — — — — — 0.11 — 0.4— — — — — — — — — E0.1— — — — — — — — — —

— — — — — — — E0.01 — E0.1

— — — — — — — 0.18 — 0.3— — — — — — — — — 0.2— — — — — — — E0.03 — M— — — — — — — — — —

Perdue Treatment Plant—

finished water at SWR

— — — — — — — — — 0.8— — — — — — — — — E0.1

— — — — — — — 8.9 — —— — — — — — — — — —— — — — — — — — — 0.2— — — — — — — — — 0.4— — — — — — — — — —— — — — — — — — — 0.2

Perdue Treatment Plant—

imported raw water at SWR

— — — — — — — — — 1.2— — — — — — — — — 0.2— — — — — — — — — 0.5— — — — — — — — — 1.0

Table 3  45
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

tert-Butylbenzene

(77353) 

Tetrachloroethylene

(34475)

Tetrachloromethane

(32102)

Tetrahydrofuran

(81607)

Toluene

(34010)

trans-1,2-Dichloroethylene 

(34546)

trans-1,3-

Dichloropropene 

(34699)

trans-1,4-

Dichloro-2-

butene

(73547)

Bromoform

(32104)

[LRL] [0.2] [0.06] [0.1] [0.06] [2] [0.05] [0.03] [0.09] [0.7]

SWR near pump tower

—

—

—

— E0.04

—

—

— 0.16

—

—

—

—

—

—

—

— E0.10

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.01

—

—

— 0.17

—

—

—

— E0.03

—

—

— 0.12

—

—

—

— E0.04

—

—

—

—

—

—

—

— E0.03

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.01

—

—

— E0.04

—

—

—

—

—

—

—

—

—

SWR center of minimum pool

—

—

—

— E0.04

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.02

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.06

—

—

—

— E0.02

—

—

—

—

—

—

—

— E0.01

—

—

—

—

—

—

—

— E0.06

—

—

—

—

46  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

tert-Butylbenzene

(77353) 

Tetrachloroethylene

(34475)

Tetrachloromethane

(32102)

Tetrahydrofuran

(81607)

Toluene

(34010)

trans-1,2-Dichloroethylene 

(34546)

trans-1,3-

Dichloropropene 

(34699)

trans-1,4-

Dichloro-2-

butene

(73547)

Bromoform

(32104)

[LRL] [0.2] [0.06] [0.1] [0.06] [2] [0.05] [0.03] [0.09] [0.7]

SWR east end reservoir fill 

boundary

— — — — E0.04 — — — —— — — — — — — — —— — — — E0.01 — — — —— — — — E0.04 — — — —— — — — E0.03 — — — —— — — — — — — — —

Loveland reservoir near dam — — — — — — — — —

— — — — E0.04 — — — —— — — — E0.01 — — — —— — — — E0.03 — — — —— — — — — — — — —— — — — E0.01 — — — —— — — — E0.01 — — — —— — — — E0.01 — — — —— — — — — — — — —— — — — E0.02 — — — —— — — — E0.04 — — — —— — — — E0.05 — — — —— — — — — — — — —— — — — — — — — ——

Table 3  47
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

tert-Butylbenzene

(77353) 

Tetrachloroethylene

(34475)

Tetrachloromethane

(32102)

Tetrahydrofuran

(81607)

Toluene

(34010)

trans-1,2-Dichloroethylene 

(34546)

trans-1,3-

Dichloropropene 

(34699)

trans-1,4-

Dichloro-2-

butene

(73547)

Bromoform

(32104)

[LRL] [0.2] [0.06] [0.1] [0.06] [2] [0.05] [0.03] [0.09] [0.7]

Sweetwater River at low-flow 

diversion at SWR

—

—

—

— E0.09

—

—

—

—

—

—

—

— E0.02

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.02

—

—

—

—

— E0.01

—

— E0.01

—

—

—

—

—

—

—

— E0.06

—

—

—

—

—

—

—

— E0.07

—

—

—

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—

finished water at SWR

—

— E0.07

—

—

—

—

— 1.36

—

— E0.05

—

—

—

—

— 6.01

—

— E0.04

—

—

—

—

—

—

— E0.01 E0.08

—

—

—

—

— 11.5

—

— E0.06

— E0.03

—

—

— 7.08

—

— E0.04

— E0.03

—

—

— 0.50

—

— E0.06

— E0.03

—

—

— 7.48

E0.01 E0.06

—

—

—

—

— 8.79

—

Perdue Treatment Plant—

imported raw water at SWR

—

—

—

—

—

—

—

—

—

—

—

—

— E0.01

—

—

—

—

—

—

—

— E0.03

—

—

—

—

—

—

—

—

—

—

—

—

48  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Trichloroethylene

(39180)

Trichlorofluoromethane 

(34488)

Chloroform

(32106)

Vinyl chloride

(39175)

1,4-Bromofluorobenzene

 (surrogate)

(percent) 

1,2-Dichloroethane-d4

(surrogate) 

(percent)

Toluene-d8

(surrogate) 

(percent)

[LRL] [0.06] [0.04] [0.09] [0.05]

SWR near pump tower — — 1.14 — 110 98.9 103

— — 0.58 — 118 69.0 93.3— — 0.21 — 105 121 110— — E0.09 — 104 119 109— — 0.51 — 100 108 98.1— — 0.35 — 95.4 104 99.3— — 0.14 — 111 87.4 98.3— — 0.24 — 110 88.2 98.5— — 0.16 — 106 83.7 97.0— — E0.08 — 104 81.0 97.9— — 0.66 — 111 88.4 98.9

SWR center of minimum pool — — 0.38 — 101 106 103

— — 0.14 — 118 68.3 92.2— — 0.24 — 123 75.2 101— — E0.08 — 128 73.5 102— — 0.25 — 101 107 101— — 0.12 — 99.7 105 100— — 0.21 — 109 84.9 98.2— — 0.41 — 108 95.4 102

Table 3  49
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Trichloroethylene

(39180)

Trichlorofluoromethane 

(34488)

Chloroform

(32106)

Vinyl chloride

(39175)

1,4-Bromofluorobenzene

 (surrogate)

(percent) 

1,2-Dichloroethane-d4

(surrogate) 

(percent)

Toluene-d8

(surrogate) 

(percent)

[LRL] [0.06] [0.04] [0.09] [0.05]

SWR east end reservoir fill 

boundary

—

— 0.33

— 109 99.1 105

—

— E0.06

— 124 77.3 101

—

— 0.16

— 98.4 90.1 95.3

—

— 0.12

— 108 89.0 97.8

—

— E0.03

— 105 83.2 98.1

—

— E0.06

— 109 91.8 96.3

Loveland reservoir near dam

—

— E0.18

— 108 105 106

—

—

—

— 107 102 105

—

—

—

— 119 69.5 93.1

—

—

—

— 121 69.0 93.6

—

—

—

— 122 75.7 98.9

—

—

—

— 121 76.2 100

—

—

—

— 102 90.2 97.2

—

—

—

— 106 92.0 99.3

—

—

—

— 93.5 103 101

—

—

—

— 113 86.7 97.2

—

—

—

— 105 84.1 96.8

—

—

—

— 106 82.6 98.1

—

— E0.16

— 107 87.3 96.0

—

—

—

— 101 85.0 95.9

50 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 3. Analytical results for selected volatile organic compounds in whole water using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 in 

Sweetwater and Loveland Reservoirs, San Diego County, California—Continued. [Time is denoted in 24-hour scale; the five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property; concentrations are given in micrograms per liter (mg/L) unless noted; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level; E, estimated value; LRL, laboratory reporting level; M, compound measureable but not quantifiable]

Site name

Trichloroethylene

(39180)

Trichlorofluoromethane 

(34488)

Chloroform

(32106)

Vinyl chloride

(39175)

1,4-Bromofluorobenzene

 (surrogate)

(percent) 

1,2-Dichloroethane-d4

(surrogate) 

(percent)

Toluene-d8

(surrogate) 

(percent)

[LRL] [0.06] [0.04] [0.09] [0.05]

Sweetwater River at low-flow 

diversion above SWR

0.11 — E0.01 — 106 107 107

E0.02 — — — 123 68.5 93.4E0.03 — — — 129 76.1 101E0.01 — — — 107 93.0 98.7E0.09 — — — 101 105 101E0.03 — — — 109 87.4 97.0E0.04 — — — 105 90.2 97.8

— — E0.04 — 109 89.3 99.3

Perdue Treatment Plant—

finished water at SWR

— — 16.7 — 107 95.2 90.9— — 20.4 — 116 69.3 83.7— — E22.2 — 135 74.7 102— — 42 — 98.4 88.9 82.9— — 11.3 — 98.7 99.8 96.7— — 4.12 — 124 75.2 87.8— — 11.7 — 121 77.9 97.7— — 44.8 — 111 81.9 85.8

Perdue Treatment Plant—

imported raw water at SWR

— — 0.17 — 111 100 105— — 0.35 — 107 93.2 97.9— — 0.35 — 112 86.0 100— — 0.31 — 103 88.9 94.8

Table 3  51
Site name Date (mm/dd/yyyy) Time 2,6-Diethyl- aniline

(82660)

Acetochlor

(49260)

Alachlor

(46342)

a-HCH

(34253)

Atrazine

(39632)

Azinphosmethyl 

(82686)

Benfluralin

(82673)

Butylate

(04028)

[LRL] [0.003] [0.002] [0.002] [0.002] [0.001] [0.001] [0.002] [0.002]

SWR near pump tower 11/29/1999 1300

—

—

—

—

—

—

—

—

03/13/2000 1220

—

—

—

—

—

—

—

—

06/12/2000 1140

—

—

—

—

—

—

—

—

06/12/2000 1150

—

—

—

—

—

—

—

—

09/05/2000 1150

—

—

—

—

—

—

—

—

12/04/2000 1220

—

—

—

—

—

—

—

—

03/20/2001 1240

—

—

—

— E0.002

—

—

—

03/20/2001 1250

—

—

—

— E0.002

—

—

—

06/06/2001 1010

—

—

—

—

—

—

—

—

06/06/2001 1020

—

—

—

—

—

—

—

—

09/06/2001 0940

—

—

—

—

—

—

—

—

SWR center of minimum 

pool

11/29/1999 1330

—

—

—

—

—

—

—

—

03/13/2000 1300

—

—

—

—

—

—

—

—

06/12/2000 1250

—

—

—

—

—

—

—

—

09/05/2000 1240

—

—

—

—

—

—

—

—

12/04/2000 1250

—

—

—

—

—

—

—

—

03/20/2001 1330

—

—

—

— E0.002

—

—

—

09/06/2001 1020

—

—

—

—

—

—

—

—

SWR east end reservoirfill boundary 11/29/1999 1400

—

—

—

—

—

—

—

—

03/13/2000 1320

—

—

—

—

—

—

—

—

06/12/2000 1340

—

—

—

—

—

—

—

—

09/05/2000 1300

—

—

—

—

—

—

—

—

06/06/2001 1040

—

—

—

—

—

—

—

—

09/06/2001 1050

—

—

—

—

—

—

—

—

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and Loveland Reservoirs, San Diego County, California.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

52 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Site name Date (mm/dd/yyyy) Time 2,6-Diethyl- aniline (82660) Acetochlor (49260) Alachlor (46342) a-HCH (34253) Atrazine (39632) Azinphos- methyl (82686) Benfluralin (82673) Butylate (04028)

[LRL] [0.003] [0.002] [0.002] [0.002] [0.001] [0.001] [0.002] [0.002]

Loveland reservoir near 

dam

11/30/1999 1020 — — — — — — — —11/30/1999 1030 — — — — — — — —03/14/2000 1000 — — — — — — — —03/14/2000 1020 — — — — — — — —06/13/2000 1000 — — — — — — — —09/06/2000 0950 — — — — — — — —09/06/2000 1000 — — — — — — — —12/05/2000 1020 — — — — — — — —03/21/2001 1130 — — — — — — — —06/05/2001 1130 — — — — — — — —06/05/2001 1140 — — — — — — — —09/06/2001 1440 — — — — — — — —09/06/2001 1450 — — — — — — — —

Sweetwater River at lowflow diversion dam 

above SWR

11/29/1999 1630 — — — — — — — —01/29/2000 0245 — — — — — — — —01/29/2000 1445 — — — — — — — —01/30/2000 0200 — — — — — — — —01/30/2000 1405 — — — — — — — —03/13/2000 1500 — — — — — — — —06/12/2000 1630 — — — — — — — —09/05/2000 1520 — — — — — — — —12/04/2000 1420 — — — — — — — —

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Table 4  53
Site name Date (mm/dd/yyyy) Time 2,6-Diethyl- aniline

(82660)

Acetochlor

(49260)

Alachlor

(46342)

a-HCH

(34253)

Atrazine

(39632)

Azinphosmethyl 

(82686)

Benfluralin

(82673)

Butylate

(04028)

[LRL] [0.003] [0.002] [0.002] [0.002] [0.001] [0.001] [0.002] [0.002]

03/20/2001 1600

—

—

—

—

—

—

—

—

06/05/2001 1500

—

—

—

—

—

—

—

—

09/06/2001 1615

—

—

—

—

—

—

—

—

Perdue Treatment 

Plant—finished water at SWR

11/29/1999 1530

—

—

—

—

—

—

—

—

03/13/2000 1600

—

—

—

—

—

—

—

—

06/12/2000 1710

—

—

—

—

—

—

—

—

09/05/2000 1400

—

—

—

—

—

—

—

—

12/04/2000 1510

—

—

—

—

—

—

—

—

03/20/2001 1430

—

—

—

— E0.003

—

—

—

06/05/2001 1420

—

—

—

—

—

—

—

—

09/06/2001 1230

—

—

—

—

—

—

—

—

Perdue Treatment

Plant—imported raw water at SWR

11/29/1999 1620

—

—

—

— 0.005

—

—

—

09/05/2000 1600

—

—

—

—

—

—

—

—

03/20/2001 1500

—

—

—

— E0.003

—

—

—

09/06/2001 1300

—

—

—

— 0.007

—

—

—

SWR below Steel Canyon 

Bridge

01/29/2000 1000

—

—

—

—

—

—

—

—

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

54  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Carbaryl (82680) Carbo- furan (82674) Chlorpyrifos (38933) Cyanazine (04041) DCPA (Dacthal) (82682) Deethylat- razine (04040) Diazinon (39572) Dieldrin (39381) Disulfoton (82677) EPTC (82668) Ethalflu- ralin (82663)

[LRL] [0.003] [0.003] [0.004] [0.004] [0.002] [0.002] [0.002] [0.001] [0.02] [0.002] [0.004]

SWR near pump tower — — — — — — — — — — —

— — — — — — 0.007 — — — —— — — — — — — — — — —— — — — — — 0.007 — — — —— — — — — — 0.005 — — — —— — — — — — E0.002 — — — —— — — — — — 0.006 — — — —— — — — — — 0.006 — — — —— — — — — — 0.006 — — — —— — — — — — E0.004 — — — —— — — — — — — — — — —

SWR center of minimum pool — — — — — — — — — — — — — — — — — 0.007 — — — —

— — — — — — — — — — —— — — — — — — — — — —— — — — — — E0.002 — — — —— — — — — — 0.006 — — — —— — — — — — — — — — —

SWR east end reservoir fill boundary — — — — — — — — — — — — — — — — — 0.009 — — — —

— — — — — — — — — — —

Table 4  55
Site name Carbaryl

(82680)

Carbofuran

(82674)

Chlorpyrifos

(38933)

Cyanazine

(04041)

DCPA 

(Dacthal)

(82682)

Deethylatrazine

(04040)

Diazinon

(39572)

Dieldrin

(39381)

Disulfoton

(82677)

EPTC

(82668)

Ethalfluralin

(82663)

[LRL] [0.003] [0.003] [0.004] [0.004] [0.002] [0.002] [0.002] [0.001] [0.02] [0.002] [0.004]

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— 0.005

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Loveland reservoir 

near dam

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Sweetwater River at 

low-flow diversion dam above SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.003

—

—

—

—

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

56  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Site name Carbaryl (82680) Carbo- furan (82674) Chlorpyrifos (38933) Cyanazine (04041) DCPA (Dacthal) (82682) Deethylat- razine (04040) Diazinon (39572) Dieldrin (39381) Disulfoton (82677) EPTC (82668) Ethalflu- ralin (82663)

[LRL] [0.003] [0.003] [0.004] [0.004] [0.002] [0.002] [0.002] [0.001] [0.02] [0.002] [0.004]

— — — — — — — — — — —— — — — — — — — — — —— — — — — — E0.002 — — — —— — — — — — E0.004 — — — —— — — — — — E0.004 — — — —— — — — — — — — — — —

Perdue Treatment 

Plant—finished water at SWR

— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — — — — — — — —— — — — E0.001 — E0.001 — — — —— — — — — — — — — — —— — — — — — — — — — —

Perdue Treatment 

Plant—imported raw water at SWR

— — — — — — — — — — —— — — — — — — — — — —— — — — E0.001 — E0.002 — — — —— — — — — — — — — — —

SWR below Steel 

Canyon Bridge

— — — — — — — — — — —

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Table 4  57
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Ethoprop

(82672)

Fonofos

(04095)

Lindane

(39341)

Linuron

(82666)

Malathion

(39532)

Metolachlor

(39415)

Metribuzin

(82630)

Molinate

(82671)

Napropamide

(82684)

p,p’-DDE

(34653)

Parathion

(39542)

Parathionmethyl

(82667)

[LRL] [0.003] [0.003] [0.004] [0.002] [0.005] [0.002] [0.004] [0.004] [0.003] [0.006] [0.004] [0.006]

SWR near pump 

tower

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.003

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

SWR center of 

minimum pool 

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

58  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Ethoprop (82672) Fonofos (04095) Lindane (39341) Linuron (82666) Malathion (39532) Metola- chlor (39415) Metribuzin (82630) Molinate (82671) Naprop- amide (82684) p,p’-DDE (34653) Parathion (39542) Parathion- methyl (82667)

[LRL] [0.003] [0.003] [0.004] [0.002] [0.005] [0.002] [0.004] [0.004] [0.003] [0.006] [0.004] [0.006]

SWR east end 

reservoir fill boundary

— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —

Loveland reservoir 

near dam

— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —— — — — — — — — — — — —

Table 4  59
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Ethoprop

(82672)

Fonofos

(04095)

Lindane

(39341)

Linuron

(82666)

Malathion

(39532)

Metolachlor

(39415)

Metribuzin

(82630)

Molinate

(82671)

Napropamide

(82684)

p,p’-DDE

(34653)

Parathion

(39542)

Parathionmethyl

(82667)

[LRL] [0.003] [0.003] [0.004] [0.002] [0.005] [0.002] [0.004] [0.004] [0.003] [0.006] [0.004] [0.006]

Sweetwater River at 

low-flow diversion dam above SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Perdue Treatment 

Plant—finished water at SWR

—

—

—

—

— 0.005

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.003

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

60 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Site name Ethoprop (82672) Fonofos (04095) Lindane (39341) Linuron (82666) Malathion (39532) Metola- chlor (39415) Metribuzin (82630) Molinate (82671) Naprop- amide (82684) p,p’-DDE (34653) Parathion (39542) Parathion- methyl (82667)

[LRL] [0.003] [0.003] [0.004] [0.002] [0.005] [0.002] [0.004] [0.004] [0.003] [0.006] [0.004] [0.006]

Perdue Treatment 

Plant—imported raw water at SWR

— — — — — 0.005 — — — — — —— — — — — — — — — — — —— — — — — E0.003 — — — — — —— — — — — E0.006 — — — — — —

SWR near 

Cottonwood Golf Course

— — — — — — — — — — — —

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Table 4  61
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Pebulate

(82669)

Pendimethalin

(82683)

cis-Permethrin 

(82687)

Phorate

(82664)

Prometon

(04037)

Pronamide

(82676)

Propachlor

(04024)

Propanil

(82679)

Propargite

(82685)

Simazine

(04035)

[LRL] [0.004] [0.004] [0.005] [0.002] [0.02] [0.003] [0.007] [0.004] [0.01] [0.005]

SWR near pump tower

—

—

—

— E0.01

—

—

—

— 0.015

—

—

—

— E0.01

—

—

—

— 0.018

—

—

—

— E0.01

—

—

—

— 0.014

—

—

—

—

—

—

—

—

— 0.014

—

—

—

— E0.01

—

—

—

— 0.012

—

—

—

— E0.01

—

—

—

— 0.011

—

—

—

— E0.01

—

—

—

— E0.007

—

—

—

— E0.01

—

—

—

— E0.006

—

—

—

— E0.01

—

—

—

— E0.005

—

—

—

— E0.01

—

—

—

— E0.006

—

—

—

— E0.01

—

—

—

—

—

SWR center of minimum 

pool

—

—

—

— E0.01

—

—

—

— 0.018

—

—

—

— E0.01

—

—

—

— 0.019

—

—

—

—

—

—

—

—

— 0.013

—

—

—

—

—

—

—

—

— 0.014

—

—

—

—

M

—

—

—

— E0.009

—

—

—

— E0.01

—

—

—

— E0.006

—

—

—

— E0.01

—

—

—

—

—

62 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Pebulate (82669) Pendi- methalin (82683) cis-Perme- thrin (82687) Phorate (82664) Prometon (04037) Pronamide (82676) Propachlor (04024) Propanil (82679) Propargite (82685) Simazine (04035)

[LRL] [0.004] [0.004] [0.005] [0.002] [0.02] [0.003] [0.007] [0.004] [0.01] [0.005]

SWR east end reservoir 

fill boundary

— — — — E0.01 — — — — 0.017— — — — E0.01 — — — — 0.019— — — — — — — — — 0.014— — — — — — — — — 0.013— — — — E0.01 — — — — E0.005— — — — E0.01 — — — — —

Loveland reservoir near 

dam

— — — — M — — — — 0.018— — — — M — — — — 0.016— — — — M — — — — 0.012— — — — M — — — — 0.013— — — — — — — — — 0.009— — — — — — — — — 0.012— — — — — — — — — 0.012— — — — M — — — — E0.006— — — — M — — — — E0.007— — — — — — — — — E0.008— — — — M — — — — E0.009— — — — E0.01 — — — — E0.01— — — — M — — — — —

Table 4  63
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Pebulate

(82669)

Pendimethalin

(82683)

cis-Permethrin 

(82687)

Phorate

(82664)

Prometon

(04037)

Pronamide

(82676)

Propachlor

(04024)

Propanil

(82679)

Propargite

(82685)

Simazine

(04035)

[LRL] [0.004] [0.004] [0.005] [0.002] [0.02] [0.003] [0.007] [0.004] [0.01] [0.005]

Sweetwater River at 

low-flow diversion dam above SWR

—

—

—

— E0.01

—

—

—

— 0.007

—

—

—

— E0.01

—

—

—

— 0.008

—

—

—

— E0.01

—

—

—

— 0.009

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.01

—

—

—

— 0.012

—

—

—

—

—

—

—

—

—

—

—

—

—

—

M

—

—

—

—

—

—

—

—

— E0.01

—

—

—

— E0.005

—

—

—

— 0.02

—

—

—

— E0.008

—

—

—

— E0.01

—

—

—

—

—

—

—

—

— E0.01

—

—

—

—

—

Perdue Treatment 

Plant—finished water at SWR

—

—

—

—

—

—

—

—

—

—

—

—

—

— E0.01

—

—

—

— 0.017

—

—

—

—

—

—

—

—

— 0.012

—

—

—

—

—

—

—

—

— 0.014

—

—

—

— E0.01

—

—

—

— E0.009

—

—

—

—

M

—

—

—

— E0.005

—

—

—

— E0.01

—

—

—

— E0.006

—

—

—

— E0.01

—

—

—

— E0.007

64  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Pebulate (82669) Pendi- methalin (82683) cis-Perme- thrin (82687) Phorate (82664) Prometon (04037) Pronamide (82676) Propachlor (04024) Propanil (82679) Propargite (82685) Simazine (04035)

[LRL] [0.004] [0.004] [0.005] [0.002] [0.02] [0.003] [0.007] [0.004] [0.01] [0.005]

Perdue Treatment — — — — — — — — — 0.008Plant—imported raw — — — — — — — — — 0.01water at SWR — — — — M — — — — E0.006

— — — — — — — — — E0.008

SWR near Cottonwood 

Golf Course

— — — — — — — — — —

Table 4  65
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Tebuthiuron

(82670)

Terbacil

(82665)

Terbufos

(82675)

Thiobencarb

(82681)

Triallate

(82678)

Trifluralin

(82661)

Diazinon-d10 

(surrogate)

(91063)

a-HCH-d6

(surrogate)

(91065)

[LRL] [0.01] [0.007] [0.01] [0.002] [0.001] [0.002] [percent] [percent]

SWR near pump tower

—

—

—

—

—

— 98.7 102

E0.01

—

—

—

—

— 101 89.1

—

—

—

—

—

— 108 95.8

—

—

—

—

—

— 114 92.1

—

—

—

—

—

— 99.5 89.3

M

—

—

—

—

— 116 105

E0.01

—

—

—

—

— 117 109

M

—

—

—

—

— 89.5 86.0

E0.01

—

—

—

—

— 114 88.8

—

—

—

—

—

— 95.8 91.6

—

—

—

—

—

— 111 94.0

SWR center of minimum pool

—

—

—

—

—

— 107 109

—

—

—

—

—

— 104 92.1

—

—

—

—

—

— 108 82.2

—

—

—

—

—

— 102 99.7

E0.01

—

—

—

—

— 92.2 85.1

M

—

—

—

—

— 85.6 82.3

M

—

—

—

—

— 102 87.0

66  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Tebuthiuron (82670) Terbacil (82665) Terbufos (82675) Thiobencarb (82681) Triallate (82678) Trifluralin (82661) Diazinon-d10 (surrogate) (91063) a-HCH-d6 (surrogate) (91065)

[LRL] [0.01] [0.007] [0.01] [0.002] [0.001] [0.002] [percent] [percent]

SWR east end reservoir fill 

boundary

— — — — — — 107 112— — — — — — 105 95.2— — — — — — ND ND— — — — — — 101 95.9

E0.01 — — — — — 104 96.5

— — — — — — 111 99.1

Loveland reservoir near dam — — — — — — 112 113

— — — — — — 100 102— — — — — — 104 89.5— — — — — — 103 90.0— — — — — — 109 83.1— — — — — — 101 97.2— — — — — — 102 97.7— — — — — — 112 92.5— — — — — — 84.1 83.9— — — — — — 94.2 88.4— — — — — — 100 93.7— — — — — — 113 103— — — — — — 110 99.1

Table 4  67
Site name Tebuthiuron

(82670)

Terbacil

(82665)

Terbufos

(82675)

Thiobencarb

(82681)

Triallate

(82678)

Trifluralin

(82661)

Diazinon-d10 

(surrogate)

(91063)

a-HCH-d6

(surrogate)

(91065)

[LRL] [0.01] [0.007] [0.01] [0.002] [0.001] [0.002] [percent] [percent]

Sweetwater River at low-flow 

diversion dam above SWR

—

—

—

—

—

— 105 108

0.01

—

—

—

—

— 96.5 93.5

—

—

—

—

—

— 109 91.7

—

—

—

—

—

— 111 90.5

—

—

—

—

—

— 103 84.7

0.01

—

—

—

—

— 99.5 85.0

—

—

—

—

—

— 91.6 81.5

—

—

—

—

—

— 109 98.5

E0.01

—

—

—

—

— 109 96.3

0.02

—

—

—

—

— 115 110

E0.01

—

—

—

—

— 114 93.7

E0.01

—

—

—

—

— 109 94.5

Perdue Treatment 

Plant—finished water at SWR

—

—

—

—

—

— 0.0 99.7

E0.01

—

—

—

—

— 88.0 97.3

—

—

—

—

—

— 91.9 81.7

—

—

—

—

—

— 0.0 99.9

—

—

—

—

—

— 117 99.8

—

—

—

—

—

— 87.5 84.6

E0.01

—

—

—

—

— 91.1 88.4

—

—

—

—

—

— 0.0 97.4

Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

68  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 4. Analytical results for pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for Sweetwater and 

Loveland Reservoirs, San Diego County, California—Continued.[See table 1 for site identification number. Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir: LRL, laboratory reporting level; E, estimated value; M, compound measured below detection limit but not quantifiable; ND, no data; all values are reported as micrograms per liter (mg/L) unless noted; —, compound not detected at a concentration above laboratory reporting level]

Site name Tebuthiuron (82670) Terbacil (82665) Terbufos (82675) Thiobencarb (82681) Triallate (82678) Trifluralin (82661) Diazinon-d10 (surrogate) (91063) a-HCH-d6 (surrogate) (91065)

[LRL] [0.01] [0.007] [0.01] [0.002] [0.001] [0.002] [percent] [percent]

Perdue Treatment 

Plant—imported raw water at SWR

— — — — — — 104 108— — — — — — 108 92.0M — — — — — 107 104— — — — — — 110 96.4

SWR below Steel Canyon 

Bridge

— — — — — — 110 90.7

Table 4  69
Date

(mm/dd/yyyy)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane

Chloroethene 

(vinyl 

chloride) 

BromomethaneChloroethane

Bromoethene 

(vinyl 

bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane

(CFC-113)

10/02/1999 0.664 — — — — — E0.062 

10/13/1999 0.638 — — — — — E0.074 

10/26/1999 0.763 — — — — — E0.079 

11/07/1999 0.575 — — — — — E0.075

11/19/1999 0.642 E0.084 — — — — E0.066 

12/13/1999 0.419 — — — — — E0.054 

12/13/1999 0.407 — — — — — E0.048 

12/25/1999 0.670 0.448 — — — — E0.076 

01/06/2000 E0.709 — — 0.126 — — E0.079

01/18/2000 1.56 E0.237 — — — — 0.210

01/30/2000 0.546 — — — — — —

02/11/2000 E0.614 0.777 — 2.49 — — E0.069 

03/18/2000 0.379 — — — — — E0.050 

04/11/2000 0.726 — — — — — E0.148 

04/23/2000 0.802 — — — — — E0.103 

05/05/2000 0.789 — — — — — E0.097 

05/17/2000 0.709 — — — — — E0.085

05/29/2000 0.493 — — — — — E0.062 

06/10/2000 0.714 E0.211 — — — — E0.077

06/29/2000 0.268 — — — — — E0.065 

07/11/2000 0.629 — — — — — E0.074 

07/23/2000 0.667 E0.291 — — — — E0.078

08/04/2000 0.505 0.603 — — 3.65 — E0.004

08/16/2000 0.952 — — — — — E0.106

08/28/2000 NA NA NA NA NA NA NA

09/09/2000 0.769 — — — — — E0.084 

09/21/2000 1.27 — — — — — E0.127 

10/03/2000 1.40 — — — — — E0.169 

11/08/2000 1.24 — — — — — E0.191 

11/20/2000 1.14 — — — — — E0.128 

12/02/2000 0.800 E0.237 — — — — E0.096

12/14/2000 1.11 — — — — — E0.137 

12/26/2000 1.30 — 0.58 — — — 0.198

01/07/2001 NA NA NA NA NA NA NA

Table 5A. Analytical results for volatile organic compounds with low breakthrough volumes in air for the Sweetwater Reservoir air 

sampling site, San Diego County, California.

[[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

70 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Date

(mm/dd/yyyy)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane

Chloroethene 

(vinyl 

chloride) 

BromomethaneChloroethane

Bromoethene 

(vinyl 

bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane

(CFC-113)

01/19/2001 NA NA NA NA NA NA NA

01/31/2001 1.04 — 1.87 — — — E0.141 

02/12/2001 0.601 — — — — — E0.100 

02/24/2001 0.661 — — — — — E0.095 

02/24/2001 0.460 — — — — — E0.079

03/08/2001 0.304 — — — — — E0.059

03/08/2001 0.477 — — — — — E0.113 

03/20/2001 0.987 — — — — — E0.140

03/20/2001 0.931 — — — — — E0.139 

04/01/2001 0.939 — — — — — E0.119 

04/13/2001 1.22 — — — — — E0.175 

04/25/2001 0.895 — — — — — E0.122

05/07/2001 1.13 — — — — — E0.139 

05/19/2001 0.962 — — — — — E0.172

05/31/2001 1.14 — — — — — 0.209

05/31/2001 1.12 — — — — — E0.181

06/12/2001 0.770 — — — — — E0.150 

06/24/2001 0.617 — — — — — E0.167

07/05/2001 1.22 — — — — — 0.198

07/05/2001 1.75 — — — — — 0.201

07/16/2001 0.913 — — — — — E0.113

08/08/2001 — — — — — — —

08/23/2001 NA NA NA NA NA NA NA

09/16/2001 0.087 — — — — — E0.013 

09/28/2001 1.09 — — — — — E0.147 

Table 5A. Analytical results for volatile organic compounds with low breakthrough volumes in air for the Sweetwater 

Reservoir air sampling site, San Diego County, California—Continued.

[[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and 

environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, 

month/day/year; NA, not analyzed; —, compound not detected at a concentration above laboratory reporting level]

Table 5A  71
Date

(mm/dd/yyyy)

Dibromomethane

BromodichloromethaneCarbon 

tetrachloride

1,2-Dichloroethane

Bromoform 

(Tribromomethane) 

DibromochloromethaneChloroform 

(Trichloromethane) Toluene

10/02/1999 — E0.010 E0.083 E0.003 — E0.002 E0.025 2.04

10/13/1999 — E0.015 E0.099 E0.005 — — E0.035 2.12

10/26/1999 — — E0.092 E0.004 — — E0.008 0.887

11/07/1999 — — E0.090 E0.004 — — E0.005 1.31

11/19/1999 — — E0.082 E0.006 — — E0.020 1.29

12/13/1999 — — E0.085 E0.006 — — E0.009 1.28

12/13/1999 — — E0.064 E0.005 — — E0.018 1.11

12/25/1999 — — E0.080 E0.006 — — E0.022 1.97

01/06/2000 — — E0.030 E0.003 — — E0.005 0.584

01/18/2000 — — — — — — — E0.052

01/30/2000 — — E0.095 E0.002 — — E0.002 0.455

02/11/2000 — — E0.014 — — — E0.002 0.438

03/18/2000 — — E0.015 — — — — 0.219

04/11/2000 — — E0.113 E0.004 — — E0.002 0.353

04/23/2000 — — E0.128 E0.008 — — E0.011 0.596

05/05/2000 — E0.003 E0.105 — — — E0.016 0.600

05/17/2000 — E0.003 E0.093 E0.004 — — E0.008 0.480

05/29/2000 — E0.008 E0.130 E0.004 — E0.004 E0.038 0.423

06/10/2000 — E0.004 E0.140 — — E0.002 E0.026 0.309

06/29/2000 — E0.025 E0.110 — E0.005 E0.021 E0.022 0.737

07/11/2000 — E0.010 E0.084 — E0.004 E0.010 E0.012 0.809

07/23/2000 — E0.011 E0.100 — E0.004 E0.012 E0.009 1.25

08/04/2000 — — E0.115 — — — E0.004 0.844

08/16/2000 — E0.002 E0.157 — — — E0.004 0.888

08/28/2000 — E0.007 E0.169 E0.005 E0.002 E0.006 E0.015 0.465

09/09/2000 — E0.008 E0.201 E0.006 E0.004 E0.006 E0.033 0.805

09/21/2000 — — E0.197 E0.009 — — — 2.73

10/03/2000 — E0.014 0.351 E0.028 E0.010 E0.005 E0.064 2.44

11/08/2000 — — 0.297 E0.026 E0.007 E0.009 0.120 3.60

11/20/2000 — — 0.401 E0.047 — — 0.105 3.85

12/02/2000 — — E0.216 E0.019 — — E0.050 4.62

12/14/2000 — — 0.412 E0.034 — — 0.086 4.75

12/26/2000 NA NA NA NA NA NA NA NA

01/07/2001 — — E0.229 E0.016 — — E0.051 4.55

01/19/2001 — — E0.160 E0.010 — — E0.014 0.396

Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

72 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Date

(mm/dd/yyyy)

Dibromomethane

BromodichloromethaneCarbon 

tetrachloride

1,2-Dichloroethane

Bromoform 

(Tribromomethane) 

DibromochloromethaneChloroform 

(Trichloromethane) Toluene

01/31/2001 — — E0.134 E0.010 — — — 6.53

02/12/2001 NA NA NA NA NA NA NA NA

02/24/2001 — — E0.107 — — — E0.010 0.547

02/24/2001 — — E0.135 E0.006 — — E0.025 0.813

03/08/2001 NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 — — — E0.002 — — — E0.035

04/01/2001 — — E0.132 E0.012 E0.001 — E0.026 1.75

04/13/2001 — — — — — — — 0.104

04/13/2001 — — E0.129 E0.013 — — E0.014 1.37

04/25/2001 — — E0.120 E0.007 — — E0.015 0.336

05/07/2001 — — E0.203 E0.023 — — E0.031 0.455

05/19/2001 — — E0.002 — — — — —

05/31/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 NA NA NA NA NA NA NA NA

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/05/2001 — — E0.033 — — — — 0.152

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — E0.212 — — — E0.028 0.858

09/16/2001 — E0.009 E0.020 — — E0.004 E0.026 0.445

09/28/2001 — — — — — — — —

Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Table 5B  73
Date

(mm/dd/yyyy) Benzene

2-Propenenitrile 

(Acrylonitrile)

ChlorobenzeneEthylbenzene

Hexachloroethane

Dichloromethane 

(Methylene 

chloride)

Tetrachloroethene 

(PCE)

1,1-Dichloroethane1,1-Dichloroethene

10/02/1999 0.609 — — 0.274 — 0.147 E0.059 — —

10/13/1999 0.888 — E0.001 0.323 — 0.136 E0.055 — —

10/26/1999 0.328 — — 0.130 — E0.026 E0.021 — —

11/07/1999 0.475 — — 0.177 — E0.022 E0.039 — —

11/19/1999 0.539 — E0.001 0.164 — 0.136 E0.035 — —

12/13/1999 0.463 — — 0.170 — E0.072 E0.033 — —

12/13/1999 0.720 — E0.005 0.174 — 0.143 E0.017 — —

12/25/1999 0.877 — E0.004 0.298 — 0.117 E0.056 — —

01/06/2000 0.410 — E0.007 E0.059 — 0.241 E0.025 — —

01/18/2000 — — E0.005 E0.010 — — E0.008 — —

01/30/2000 0.206 — — E0.067 — — E0.010 — —

02/11/2000 0.201 — E0.001 E0.060 — E0.015 E0.016 — —

03/18/2000 E0.064 — — E0.020 — — E0.008 — —

04/11/2000 0.161 — E0.001 E0.033 — E0.031 E0.009 — —

04/23/2000 0.257 — E0.001 0.093 — E0.075 E0.021 — —

05/05/2000 0.286 — E0.001 0.095 — E0.052 0.151 — —

05/17/2000 0.169 — E0.001 E0.064 — E0.037 — — —

05/29/2000 0.126 — E0.003 E0.063 — 0.112 E0.021 — —

06/10/2000 0.152 — E0.002 E0.038 — 0.180 E0.018 — —

06/29/2000 0.334 — E0.009 0.089 — E0.074 E0.035 — —

07/11/2000 0.388 — E0.014 0.123 — 0.164 E0.033 — —

07/23/2000 0.393 — E0.007 0.267 — 0.152 E0.030 — —

08/04/2000 E0.094 — E0.002 E0.058 — E0.047 — — —

08/16/2000 0.293 — E0.002 0.111 — E0.061 E0.029 — —

08/28/2000 0.121 — E0.004 E0.046 — E0.063 — — —

09/09/2000 0.228 — E0.003 0.081 — E0.084 E0.032 — —

09/21/2000 0.670 — E0.004 0.295 — E0.054 0.056 — —

10/03/2000 0.842 — E0.005 0.349 — 0.172 0.079 — —

11/08/2000 1.87 — E0.011 0.677 — 0.700 0.232 — —

11/20/2000 1.65 — E0.002 0.948 — 0.289 0.103 — —

12/02/2000 1.75 — E0.005 0.561 — 0.344 0.107 — —

12/14/2000 2.07 — E0.011 0.477 — 0.255 0.143 — —

12/26/2000 NA NA NA NA NA NA NA NA NA

01/07/2001 1.58 — E0.003 0.659 — 0.402 0.105 — —

01/19/2001 0.330 — — E0.068 — E0.031 — — —

01/31/2001 0.405 — E0.011 0.156 — 0.130 E0.017 — —

02/12/2001 NA NA NA NA NA NA NA NA NA

Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

74  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy) Benzene

2-Propenenitrile 

(Acrylonitrile)

ChlorobenzeneEthylbenzene

Hexachloroethane

Dichloromethane 

(Methylene 

chloride)

Tetrachloroethene 

(PCE)

1,1-Dichloroethane1,1-Dichloroethene

02/24/2001 0.402 — — 0.133 — E0.068 E0.014 — —

02/24/2001 0.652 — E0.002 0.162 — 0.162 E0.019 — —

03/08/2001 NA NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA NA

03/20/2001 0.167 — E0.016 E0.016 — E0.047 — — —

04/01/2001 0.552 — E0.003 0.216 — E0.047 E0.050 — —

04/13/2001 0.652 — E0.028 E0.007 — 0.267 — — 0.496

04/13/2001 0.431 — E0.002 0.188 — 0.110 0.070 — —

04/25/2001 E0.092 — E0.001 E0.048 — E0.041 E0.019 — —

05/07/2001 0.220 — — E0.073 — E0.080 0.122 — —

05/19/2001 — — E0.002 E0.008 — 0.123 — — —

05/31/2001 — — — E0.006 — — — — —

05/31/2001 — — E0.003 — — — — — 0.351

06/12/2001 NA NA NA NA NA NA NA NA NA

06/24/2001 0.689 — E0.028 E0.007 — 0.427 — — —

07/05/2001 0.265 — E0.012 E0.014 — E0.045 — — —

07/05/2001 — — — E0.020 — — E0.007 — —

07/16/2001 0.228 — — — — — — — —

08/08/2001 — — — — — — — — —

08/23/2001 0.289 — — 0.113 — 0.126 E0.038 — —

09/16/2001 0.318 — E0.007 E0.049 — 0.274 E0.016 — —

09/28/2001 0.339 — E0.011 — — 0.309 — — 0.318

Table 5B  75
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,1,1-

Trichloroethane

1,1,2-

Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-

Dichlorobenzene

1,2-Dichloropropane

trans-1,2-

Dichloroethene

1,2,4-

Trichlorobenzene

1,3-Dichlorobenzene

10/02/1999 0.094 — — — — — — —

10/13/1999 0.085 — — — — — — —

10/26/1999 E0.060 — — — — — — —

11/07/1999 E0.070 — — — — — — —

11/19/1999 0.102 — — — — — — —

12/13/1999 0.099 — — — — — — —

12/13/1999 E0.067 — — — — — — —

12/25/1999 0.082 — — — — — — —

01/06/2000 E0.024 — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 E0.044 — — — — — — —

02/11/2000 E0.014 — — — — — — —

03/18/2000 E0.011 — — — — — — —

04/11/2000 E0.057 — — — — — — —

04/23/2000 E0.061 — — — — — — —

05/05/2000 E0.051 — — — — — — E0.025

05/17/2000 E0.050 — — — — — — E0.011

05/29/2000 E0.062 — — — — — — —

06/10/2000 E0.058 — — — — — — —

06/29/2000 E0.056 — — — — — — —

07/11/2000 E0.051 — — — — — — —

07/23/2000 E0.054 — E0.004 — — — — —

08/04/2000 E0.041 — — — — — — —

08/16/2000 E0.067 — — — — — — —

08/28/2000 E0.067 — — — — — — —

09/09/2000 0.086 — — — — — — —

09/21/2000 0.121 — — — — — — —

10/03/2000 0.203 — — — — — — —

11/08/2000 0.180 — — — — — — —

11/20/2000 0.169 — — — — — — —

12/02/2000 0.117 — — — — — — —

12/14/2000 0.200 — — — — — — —

12/26/2000 NA NA NA NA NA NA NA NA

01/07/2001 0.115 — — — — — — —

01/19/2001 E0.049 — — — — — — —

01/31/2001 E0.051 — — — — — — —

02/12/2001 NA NA NA NA NA NA NA NA

02/24/2001 E0.034 — — — — — — —

76  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,1,1-

Trichloroethane

1,1,2-

Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-

Dichlorobenzene

1,2-Dichloropropane

trans-1,2-

Dichloroethene

1,2,4-

Trichlorobenzene

1,3-Dichlorobenzene

02/24/2001 E0.044 — — — — — — —

03/08/2001 NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 — — — — — — — —

04/01/2001 E0.065 — — — — — — —

04/13/2001 — — — — — — — —

04/13/2001 E0.066 — — — — — — —

04/25/2001 E0.051 — — — — — — —

05/07/2001 0.084 — — — — — — —

05/19/2001 E0.001 — — — — — — —

05/31/2001 E0.001 — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 NA NA NA NA NA NA NA NA

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/05/2001 E0.018 — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 0.086 — — E0.025 — — — —

09/16/2001 E0.014 — — — — — — —

09/28/2001 — — — — — — — —

Table 5B  77
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,1,1-

Trichloroethane

1,1,2-

Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-

Dichlorobenzene

1,2-Dichloropropane

trans-1,2-

Dichloroethene

1,2,4-

Trichlorobenzene

1,3-Dichlorobenzene

10/02/1999 0.094 — — — — — — —

10/13/1999 0.085 — — — — — — —

10/26/1999 E0.060 — — — — — — —

11/07/1999 E0.070 — — — — — — —

11/19/1999 0.102 — — — — — — —

12/13/1999 0.099 — — — — — — —

12/13/1999 E0.067 — — — — — — —

12/25/1999 0.082 — — — — — — —

01/06/2000 E0.024 — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 E0.044 — — — — — — —

02/11/2000 E0.014 — — — — — — —

03/18/2000 E0.011 — — — — — — —

04/11/2000 E0.057 — — — — — — —

04/23/2000 E0.061 — — — — — — —

05/05/2000 E0.051 — — — — — — E0.025

05/17/2000 E0.050 — — — — — — E0.011

05/29/2000 E0.062 — — — — — — —

06/10/2000 E0.058 — — — — — — —

06/29/2000 E0.056 — — — — — — —

07/11/2000 E0.051 — — — — — — —

07/23/2000 E0.054 — E0.004 — — — — —

08/04/2000 E0.041 — — — — — — —

08/16/2000 E0.067 — — — — — — —

08/28/2000 E0.067 — — — — — — —

09/09/2000 0.086 — — — — — — —

09/21/2000 0.121 — — — — — — —

10/03/2000 0.203 — — — — — — —

11/08/2000 0.180 — — — — — — —

11/20/2000 0.169 — — — — — — —

12/02/2000 0.117 — — — — — — —

12/14/2000 0.200 — — — — — — —

12/26/2000 NA NA NA NA NA NA NA NA

01/07/2001 0.115 — — — — — — —

01/19/2001 E0.049 — — — — — — —

01/31/2001 E0.051 — — — — — — —

02/12/2001 NA NA NA NA NA NA NA NA

02/24/2001 E0.034 — — — — — — —

78  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,1,1-

Trichloroethane

1,1,2-

Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-

Dichlorobenzene

1,2-Dichloropropane

trans-1,2-

Dichloroethene

1,2,4-

Trichlorobenzene

1,3-Dichlorobenzene

02/24/2001 E0.044 — — — — — — —

03/08/2001 NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 — — — — — — — —

04/01/2001 E0.065 — — — — — — —

04/13/2001 — — — — — — — —

04/13/2001 E0.066 — — — — — — —

04/25/2001 E0.051 — — — — — — —

05/07/2001 0.084 — — — — — — —

05/19/2001 E0.001 — — — — — — —

05/31/2001 E0.001 — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 NA NA NA NA NA NA NA NA

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/05/2001 E0.018 — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 0.086 — — E0.025 — — — —

09/16/2001 E0.014 — — — — — — —

09/28/2001 — — — — — — — —

Table 5B  79
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

tert-Pentyl 

methyl 

ether

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

Carbon 

disulfide

cis-1,2-

Dichloroethene

2-Hexanone Styrene o-Xylene

1,1-Dichloropropene

10/02/1999 E0.031 — — — — E0.011 E0.041 0.355 —

10/13/1999 E0.036 — — E0.019 — E0.009 E0.050 0.425 —

10/26/1999 E0.015 — — — — E0.007 E0.018 0.172 —

11/07/1999 E0.009 — — — — E0.004 E0.027 0.217 —

11/19/1999 E0.019 — — — — E0.006 E0.037 0.218 —

12/13/1999 E0.022 — — — — E0.005 E0.039 0.225 —

12/13/1999 E0.008 — — E0.108 — E0.004 E0.027 0.225 —

12/25/1999 E0.010 — — E0.011 — E0.007 E0.071 0.399 —

01/06/2000 — — — E0.028 — E0.003 E0.014 0.079 —

01/18/2000 — — — — — E0.008 E0.008 E0.014 —

01/30/2000 — — — — — E0.038 E0.014 0.083 —

02/11/2000 — — — — — E0.003 E0.005 0.074 —

03/18/2000 — — — — — E0.002 — E0.025 —

04/11/2000 E0.002 — — — — E0.006 E0.004 E0.038 —

04/23/2000 E0.006 — — — — E0.006 E0.007 0.104 —

05/05/2000 — — — — — E0.008 E0.016 0.130 —

05/17/2000 E0.003 — — — — E0.009 E0.014 0.081 —

05/29/2000 E0.004 — — E0.013 — E0.012 E0.013 0.084 —

06/10/2000 — — — E0.047 — — E0.011 E0.050 —

06/29/2000 E0.005 — — E0.014 — E0.010 E0.014 0.114 —

07/11/2000 E0.006 — — E0.020 — E0.015 E0.021 0.161 —

07/23/2000 E0.024 — — — — E0.020 E0.046 0.349 —

08/04/2000 — — — — — E0.007 E0.010 0.069 —

08/16/2000 E0.007 — — E0.018 — E0.009 E0.015 0.128 —

08/28/2000 E0.011 — — E0.013 — E0.012 E0.009 E0.054 —

09/09/2000 E0.015 — — — — E0.010 E0.012 0.093 —

09/21/2000 E0.023 — — E0.012 — E0.012 E0.087 0.399 —

10/03/2000 E0.074 — — E0.012 — E0.012 E0.050 0.490 —

11/08/2000 E0.084 — — E0.012 — E0.019 0.099 0.808 —

11/20/2000 E0.104 — — — — E0.022 0.171 1.25 —

12/02/2000 E0.056 — — — — E0.027 E0.084 0.796 —

12/14/2000 E0.052 — — — — 0.033 E0.044 0.566 —

12/26/2000 NA NA NA NA NA NA NA NA NA

01/07/2001 E0.037 — — — — E0.020 0.090 0.818 —

01/19/2001 E0.015 — — — — E0.004 E0.012 0.074 —

01/31/2001 E0.014 — — — — E0.025 E0.028 0.196 —

02/12/2001 NA NA NA NA NA NA NA NA NA

02/24/2001 E0.010 — — — — — E0.025 0.145 —

80 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

tert-Pentyl 

methyl 

ether

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

Carbon 

disulfide

cis-1,2-

Dichloroethene

2-Hexanone Styrene o-Xylene

1,1-Dichloropropene

02/24/2001 E0.011 — — E0.026 — — E0.034 0.175 —

03/08/2001 NA NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA NA

03/20/2001 — — — E0.046 — E0.034 0.022 E0.023 —

04/01/2001 E0.008 — — E0.019 — E0.014 E0.037 0.261 —

04/13/2001 — — — 0.274 — E0.021 E0.022 E0.014 —

04/13/2001 E0.008 — — — — E0.016 E0.037 0.229 —

04/25/2001 — — — — — E0.007 E0.005 E0.055 —

05/07/2001 — — — E0.038 — — — 0.086 —

05/19/2001 — — — E0.089 — — — — —

05/31/2001 — — — E0.030 — — — — —

05/31/2001 — — — E0.048 — — — — —

06/12/2001 NA NA NA NA NA NA NA NA NA

06/24/2001 — — — E0.054 — E0.081 — — —

07/05/2001 — — — 0.172 — 0.163 E0.035 E0.037 —

07/05/2001 — — — — — E0.006 — E0.020 —

07/16/2001 — — — — — — — — —

08/08/2001 — — — — — — — — —

08/23/2001 — — — E0.012 — E0.015 E0.028 0.197 —

09/16/2001 — — — 0.064 — E0.007 — E0.056 —

09/28/2001 — — — 0.527 — — — — —

Table 5B  81
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

2,2-Dichloropropane1,3-Dichloropropaneo-Ethyl

toluene

1,2,3-

Trimethylbenzene

1,2,4-

Trimethylbenzene

Isopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-

Trimethylbenzene

10/02/1999 — — E0.075 E0.065 0.308 E0.013 E0.054 0.090

10/13/1999 — — 0.093 0.089 0.407 E0.017 E0.068 0.114

10/26/1999 — — E0.035 E0.031 0.151 E0.006 E0.025 E0.043

11/07/1999 — — E0.042 E0.036 0.184 E0.007 E0.032 E0.054

11/19/1999 — — E0.043 E0.039 0.191 E0.008 E0.032 E0.052

12/13/1999 — — E0.045 E0.041 0.199 E0.008 E0.034 E0.055

12/13/1999 — — E0.040 E0.043 0.183 E0.007 E0.030 E0.052

12/25/1999 — — 0.081 0.075 0.357 E0.013 E0.056 0.102

01/06/2000 — — E0.021 E0.016 0.094 E0.004 E0.015 E0.026

01/18/2000 — — E0.002 E0.002 E0.009 E0.001 E0.002 E0.002

01/30/2000 — — E0.014 E0.014 0.067 E0.002 E0.011 E0.016

02/11/2000 — — E0.015 E0.011 E0.056 E0.002 E0.011 E0.015

03/18/2000 — — E0.005 — E0.021 E0.001 E0.004 E0.006

04/11/2000 — — E0.006 — E0.024 E0.001 E0.005 E0.006

04/23/2000 — — E0.014 E0.009 E0.051 E0.004 E0.014 E0.014

05/05/2000 — — E0.033 E0.026 0.144 E0.006 E0.026 E0.035

05/17/2000 — — E0.016 E0.012 E0.059 E0.003 E0.013 E0.016

05/29/2000 — — E0.022 E0.012 0.094 E0.005 E0.016 E0.020

06/10/2000 — — E0.012 E0.009 E0.057 E0.003 E0.008 E0.014

06/29/2000 — — E0.022 E0.016 0.082 E0.005 E0.019 E0.023

07/11/2000 — — E0.040 E0.035 0.166 E0.007 E0.030 E0.041

07/23/2000 — — E0.082 E0.078 0.356 E0.013 E0.061 0.087

08/04/2000 — — E0.017 E0.016 0.086 E0.003 E0.013 E0.019

08/16/2000 — — E0.031 E0.025 0.139 E0.005 E0.025 E0.029

08/28/2000 — — E0.012 E0.009 E0.048 E0.003 E0.009 E0.012

09/09/2000 — — E0.023 E0.017 0.098 E0.005 E0.019 E0.024

09/21/2000 — — 0.092 0.080 0.388 E0.013 E0.067 0.099

10/03/2000 — — 0.091 E0.075 0.418 E0.014 E0.067 0.112

11/08/2000 — — 0.248 0.222 1.08 E0.037 0.181 0.259

11/20/2000 — — 0.323 0.334 1.63 E0.046 0.229 0.406

12/02/2000 — — 0.159 0.146 0.699 E0.029 0.117 0.207

12/14/2000 — — 0.140 0.096 0.555 E0.027 0.108 0.147

12/26/2000 NA NA NA NA NA NA NA NA

01/07/2001 — — 0.155 0.181 0.768 E0.029 0.112 0.209

01/19/2001 — — E0.010 E0.006 E0.046 E0.032 E0.011 E0.012

01/31/2001 — — E0.036 E0.025 0.140 E0.010 E0.029 E0.041

02/12/2001 NA NA NA NA NA NA NA NA

02/24/2001 — — E0.032 E0.032 0.147 E0.005 E0.028 E0.037

82 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

2,2-Dichloropropane1,3-Dichloropropaneo-Ethyl

toluene

1,2,3-

Trimethylbenzene

1,2,4-

Trimethylbenzene

Isopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-

Trimethylbenzene

02/24/2001 — — E0.037 E0.039 0.183 E0.007 E0.036 E0.046

03/08/2001 NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 — — E0.005 E0.004 E0.018 E0.003 E0.005 E0.006

04/01/2001 — — E0.055 E0.040 0.210 E0.010 E0.044 E0.060

04/13/2001 — — E0.003 E0.002 E0.010 E0.002 E0.003 E0.003

04/13/2001 — — E0.055 E0.037 E0.192 E0.011 E0.045 E0.049

04/25/2001 — — E0.007 — E0.031 E0.002 E0.007 E0.007

05/07/2001 — — E0.021 E0.017 E0.064 E0.049 E0.018 E0.020

05/19/2001 — — E0.002 E0.002 E0.007 E0.001 E0.001 E0.002

05/31/2001 — — E0.002 E0.003 E0.009 E0.002 E0.002 E0.003

05/31/2001 — — E0.003 — — — — E0.004

06/12/2001 NA NA NA NA NA NA NA NA

06/24/2001 — — — — E0.006 — E0.001 —

07/05/2001 — — E0.009 E0.010 E0.045 E0.006 E0.008 E0.014

07/05/2001 — — E0.005 E0.004 E0.015 E0.001 E0.005 E0.005

07/16/2001 — — — — — — E0.001 —

08/08/2001 — — — — — — — —

08/23/2001 — — E0.059 E0.049 0.246 E0.008 E0.038 E0.064

09/16/2001 — — E0.014 E0.011 E0.050 E0.003 E0.011 E0.013

09/28/2001 — E 0.009 — E0.002 E0.005 — — E0.001

Table 5B  83
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

2-Chlorotoluene

1-Chloro-4-

methylbenzene

Bromochloromethane

n-Butylbenzene

secButylbenzenetertButylbenzene

4-Iso

propyl-1-

methylbenzene

1,2,3-

Trichloropropane

1,1,1,2-

Tetrachloroethane

10/02/1999 — — — E0.011 E0.005 — E0.035 — —

10/13/1999 — — — E0.016 E0.006 — E0.045 — —

10/26/1999 — — — E0.006 E0.002 — E0.020 — —

11/07/1999 — — — E0.006 E0.003 — E0.017 — —

11/19/1999 — — — E0.008 E0.002 — E0.024 — —

12/13/1999 — — — E0.008 E0.003 — E0.026 — —

12/13/1999 E0.002 — — E0.007 E0.002 — E0.015 — —

12/25/1999 E0.002 — — E0.015 E0.004 — E0.029 — —

01/06/2000 — — — E0.003 E0.001 — E0.011 — —

01/18/2000 — — — E0.001 — — E0.001 — —

01/30/2000 — — — E0.002 E0.044 — E0.033 — —

02/11/2000 — — — E0.002 E0.001 — E0.004 — —

03/18/2000 — — — E0.001 — — E0.002 — —

04/11/2000 — — — E0.001 — — E0.002 — —

04/23/2000 — — — E0.001 E0.001 — E0.002 — —

05/05/2000 — — — E0.005 E0.001 — E0.014 — —

05/17/2000 — — — E0.002 E0.001 — E0.007 — —

05/29/2000 — — — E0.003 E0.001 — E0.008 — —

06/10/2000 — — — E0.002 E0.001 — E0.003 — —

06/29/2000 — — — E0.003 E0.001 — E0.018 — —

07/11/2000 — — — E0.007 E0.003 — E0.037 — —

07/23/2000 — — — E0.014 E0.004 — 0.089 — —

08/04/2000 — — — E0.003 E0.006 — E0.004 — —

08/16/2000 — — — E0.005 E0.002 — E0.023 — —

08/28/2000 — — — E0.001 E0.001 — E0.004 — —

09/09/2000 — — — E0.004 E0.002 — E0.006 — —

09/21/2000 — — — E0.016 E0.007 — E0.006 — —

10/03/2000 — — — E0.012 E0.006 — E0.024 — —

11/08/2000 — — — E0.047 E0.015 — 0.079 — —

11/20/2000 — — — 0.071 E0.024 — 0.082 — —

12/02/2000 — — — E0.022 E0.013 — 0.039 — —

12/14/2000 — — — E0.016 E0.011 — 0.030 — —

12/26/2000 NA NA NA NA NA NA NA NA NA

01/07/2001 — — — E0.041 E0.012 — E0.041 — —

01/19/2001 — — — E0.001 E0.002 — E0.001 — 0.010

01/31/2001 — — — E0.002 E0.002 — E0.013 — —

02/12/2001 NA NA NA NA NA NA NA NA NA

84  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Date

(mm/dd/yyyy)

2-Chlorotoluene

1-Chloro-4-

methylbenzene

Bromochloromethane

n-Butylbenzene

secButylbenzenetertButylbenzene

4-Iso

propyl-1-

methylbenzene

1,2,3-

Trichloropropane

1,1,1,2-

Tetrachloroethane

02/24/2001 — — — E0.008 E0.003 — E0.022 — —

02/24/2001 — — — E0.009 E0.002 — E0.030 — —

03/08/2001 NA NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA NA

03/20/2001 — — — E0.004 — — E0.002 — —

04/01/2001 — — — E0.007 E0.004 — E0.015 — —

04/13/2001 — — — E0.001 — — E0.002 — —

04/13/2001 — — — E0.009 E0.004 — E0.021 — —

04/25/2001 — — — E0.001 — — E0.002 — —

05/07/2001 — — — E0.004 — — E0.021 — —

05/19/2001 — — — E0.003 — — E0.001 — —

05/31/2001 — — — E0.004 — — E0.002 — —

05/31/2001 — — — — — — — — —

06/12/2001 NA NA NA NA NA NA NA NA NA

06/24/2001 — — — E0.005 — — — — —

07/05/2001 — — — E0.012 — — E0.007 — —

07/05/2001 — — — — — — E0.002 — —

07/16/2001 — — — — — — — — —

08/08/2001 — — — — — — — — —

08/23/2001 — — — — — — E0.017 — —

09/16/2001 — — — E0.002 E0.001 — E0.010 — —

09/28/2001 — — — — — — E0.001 — —

Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Table 5B  85
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,2,3-

Trichlobenzene

1,2-Dibromoethane Methyl tertbutyl ether 

(MTBE)

3-Chloro1-propene

4-Methyl2-pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropyl 

ether 

(DIPE)

10/02/1999 — — 2.37 — E0.056 1.78 — — —

10/13/1999 — — 2.43 — E0.062 1.35 — — —

10/26/1999 — — 1.08 — E0.017 0.686 — — —

11/07/1999 — — 1.41 — E0.025 0.494 — — —

11/19/1999 — — 1.38 — E0.026 1.51 — — —

12/13/1999 — — 1.60 — E0.024 1.45 — — —

12/13/1999 — — 1.47 — E0.016 1.73 — — —

12/25/1999 — — 2.41 — E0.030 0.547 — — —

01/06/2000 — — 26.0 — E0.013 1.35 E 0.002 — —

01/18/2000 — — — — E0.005 E 0.079 — — —

01/30/2000 — — 0.506 — E0.015 0.633 — E0.015 —

02/11/2000 — — 0.413 — E0.008 0.415 — — —

03/18/2000 — — 0.282 — E0.008 0.250 — — —

04/11/2000 — — 0.354 — E0.012 0.454 — — —

04/23/2000 — — 0.445 — E0.024 1.62 — — —

05/05/2000 — — 0.566 — E0.025 1.01 — — —

05/17/2000 — — 0.343 — E0.031 0.622 — — —

05/29/2000 — — 0.531 — E0.025 2.73 — — —

06/10/2000 — — 0.390 — — 1.07 — — —

06/29/2000 — — 0.694 — E0.023 1.63 — — —

07/11/2000 — — 0.946 — E0.024 1.68 — — —

07/23/2000 — — 1.47 — E0.039 1.21 — — —

08/04/2000 — — 0.326 — E0.018 2.19 — — —

08/16/2000 — — 1.12 — E0.034 0.858 — — —

08/28/2000 — — 0.406 — E0.050 1.36 — — —

09/09/2000 — — 0.696 — E0.025 2.00 — — —

09/21/2000 — — 1.25 — E0.072 3.61 — — —

10/03/2000 — — 2.90 — E0.049 5.65 — — —

11/08/2000 — — 6.59 — E0.072 6.84 — — —

11/20/2000 — — 4.83 — 0.103 4.14 — — —

12/02/2000 — — 5.00 — E0.055 4.66 — — —

12/14/2000 — — 5.84 — E0.082 3.84 — — —

12/26/2000 NA NA NA NA NA NA NA NA NA

01/07/2001 — — 3.30 — E0.071 3.45 — — —

01/19/2001 — — 0.220 — E0.010 0.739 — — —

01/31/2001 — — 0.900 — E0.028 5.39 — — —

02/12/2001 NA NA NA NA NA NA NA NA NA

86  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,2,3-

Trichlobenzene

1,2-Dibromoethane Methyl tertbutyl ether 

(MTBE)

3-Chloro1-propene

4-Methyl2-pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropyl 

ether 

(DIPE)

02/24/2001 — — 0.581 — — 118 — — E0.021

02/24/2001 — — 0.768 — — 142 — — E0.016

03/08/2001 NA NA NA NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA NA NA NA

03/20/2001 — — — — E0.008 2.07 — — —

04/01/2001 — — 1.43 — E0.035 1.94 — — —

04/13/2001 — — — — E0.007 5.12 — — —

04/13/2001 — — 1.35 — E0.052 4.06 — — —

04/25/2001 — — 0.410 — E0.010 0.967 — — —

05/07/2001 — — 0.603 — — 1.89 — — —

05/19/2001 — — — — — — — — —

05/31/2001 — — — — — — — — —

05/31/2001 — — — — — 1.40 — — —

06/12/2001 NA NA NA NA NA NA NA NA NA

06/24/2001 — — — — — 1.68 — — —

07/05/2001 — — — — — — — — —

07/05/2001 — — E0.112 — — 1.20 — — —

07/16/2001 — — — — — — — — —

08/08/2001 — — — — — — — — —

08/23/2001 — — 1.28 — E0.037 2.86 — — —

09/16/2001 — — 0.416 — E0.005 1.01 — — —

09/28/2001 — — — — — — — — —

Table 5B  87
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

Methyl 

acrylonitrile

2-Butanone 

(Methyl 

ethyl ketone)

Methyl acrylate Tetrahydrofuran

1,2-Dibromo-

3-chloropropane 

(DBCP)

m- and p-Xylene

10/02/1999 — 0.607 — E0.019 — 0.997

10/13/1999 — 0.423 — E0.019 — 1.20

10/26/1999 — 0.235 — E0.012 — 0.469

11/07/1999 — 0.345 — E0.014 — 0.613

11/19/1999 E0.010 0.375 — E0.022 — 0.622

12/13/1999 E0.015 0.387 — E0.018 — 0.634

12/13/1999 — 0.199 — E0.022 — 0.634

12/25/1999 — 0.230 — E0.030 — 1.12

01/06/2000 — E0.126 — — — 0.229

01/18/2000 — E0.039 — — — E0.036

01/30/2000 — E0.012 — — — 0.232

02/11/2000 — E0.057 — — — 0.195

03/18/2000 — E0.047 — — — E0.072

04/11/2000 — 0.192 — — — 0.108

04/23/2000 — 0.324 — — — 0.276

05/05/2000 — 0.243 — — — 0.333

05/17/2000 — 0.267 — — — 0.212

05/29/2000 — 0.198 — — — 0.239

06/10/2000 — E0.112 — — — 0.143

06/29/2000 — 0.201 — E0.013 — 0.303

07/11/2000 — 0.313 — E0.017 — 0.429

07/23/2000 — 0.389 — E0.005 — 1.07

08/04/2000 — 0.306 — — — 0.209

08/16/2000 — 0.313 — — — 0.387

08/28/2000 — 0.219 — E0.013 — 0.179

09/09/2000 — 0.457 — E0.006 — 0.282

09/21/2000 — 0.555 — E0.011 — 1.03

10/03/2000 — 0.906 — E0.047 — 1.30

11/08/2000 — 1.59 — — — 2.10

11/20/2000 — 1.02 — E0.108 — 3.63

12/02/2000 — 0.411 — E0.070 — 2.38

12/14/2000 — 2.25 — — — 1.62

12/26/2000 NA NA NA NA NA NA

01/07/2001 — 0.340 — — — 2.58

01/19/2001 — 0.220 — — — 0.212

01/31/2001 — 0.494 — — — 0.503

02/12/2001 NA NA NA NA NA NA

02/24/2001 — 0.146 — — — 0.433

88  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

Methyl 

acrylonitrile

2-Butanone 

(Methyl 

ethyl ketone)

Methyl acrylate Tetrahydrofuran

1,2-Dibromo-

3-chloropropane 

(DBCP)

m- and p-Xylene

02/24/2001 — 0.229 — — — 0.539

03/08/2001 NA NA NA NA NA NA

03/08/2001 NA NA NA NA NA NA

03/20/2001 E0.019 0.257 — — — E0.053

04/01/2001 — 0.512 — — — 0.738

04/13/2001 — E0.121 — — — E0.032

04/13/2001 — 0.647 — — — 0.652

04/25/2001 — E0.134 — — — 0.166

05/07/2001 — 0.162 — — — 0.253

05/19/2001 — — — — — E0.023

05/31/2001 — — — — — —

05/31/2001 — — — — — —

06/12/2001 NA NA NA NA NA NA

06/24/2001 — E0.080 — — — —

07/05/2001 — — — — — E0.072

07/05/2001 — E0.126 — — — E0.061

07/16/2001 — — — — — —

08/08/2001 — — — — — —

08/23/2001 — — — — — 0.538

09/16/2001 — E0.109 — — — 0.164

09/28/2001 — — — — — —

Table 5B  89
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,2,3,5-Tetramethylbenzene1,2,4,5-Tetramethylbenzene Methyl acetate 2-Methyl-2-butanol 2-Methyl-2-propanol 

10/02/1999 E0.022 E0.016 E0.014 E0.025 0.249

10/13/1999 E0.033 E0.025 E0.013 E0.013 E0.117

10/26/1999 E0.012 E0.008 E0.027 E0.014 E0.121

11/07/1999 E0.014 E0.009 E0.035 E0.006 E0.046

11/19/1999 E0.016 E0.012 E0.044 E0.005 E0.053

12/13/1999 E0.015 E0.011 E0.048 E0.009 E0.103

12/13/1999 E0.017 E0.012 E0.062 E0.006 E0.065

12/25/1999 E0.030 E0.023 E0.036 E0.003 E0.038

01/06/2000 E0.005 E0.004 — E0.003 E0.045

01/18/2000 E0.001 — — E0.044 E0.131

01/30/2000 E0.005 E0.003 — E0.001 —

02/11/2000 E0.002 E0.002 — E0.002 E0.036

03/18/2000 E0.001 E0.001 — E0.003 E0.063

04/11/2000 E0.001 E0.001 E0.015 — E0.073

04/23/2000 E0.003 E0.003 E0.006 E0.009 E0.080

05/05/2000 E0.011 E0.008 — — E0.124

05/17/2000 E0.003 E0.002 E0.013 E0.025 0.271

05/29/2000 E0.005 E0.004 — E0.019 0.190

06/10/2000 E0.004 E0.003 — E0.009 E0.063

06/29/2000 E0.005 E0.004 — E0.031 0.259

07/11/2000 E0.011 E0.008 — E0.099 0.909

07/23/2000 E0.022 E0.017 — E0.107 0.872

08/04/2000 E0.006 E0.004 — E0.018 0.269

08/16/2000 E0.009 E0.007 — E0.020 0.315

08/28/2000 E0.003 E0.002 E0.019 E0.063 0.392

09/09/2000 E0.005 E0.004 E0.038 E0.039 0.227

09/21/2000 E0.034 E0.024 E0.015 E0.024 0.233

10/03/2000 E0.027 E0.017 E0.054 E0.055 0.545

11/08/2000 0.125 0.089 0.243 0.239 E0.143

11/20/2000 0.258 0.178 0.298 E0.102 E0.130

12/02/2000 0.063 E0.045 E0.085 E0.059 0.388

12/14/2000 E0.040 E0.029 0.295 E0.031 E0.056

12/26/2000 NA NA NA NA NA

01/07/2001 0.069 E0.050 — E0.018 0.305

01/19/2001 E0.005 E0.005 E0.027 E0.032 E0.120

01/31/2001 E0.010 E0.010 E0.050 0.205 0.557

02/12/2001 NA NA NA NA NA

02/24/2001 E0.021 E0.013 0.014 E0.007 E0.084

90 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 5B. Analytical results for volatile organic compounds with high breakthrough volumes in air from the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. E, estimated value; mm/dd/yyyy, month/day/year; NA, not 

analyzed; —, compound not detected at a concentration above laboratory reporting level]

Date

(mm/dd/yyyy)

1,2,3,5-Tetramethylbenzene1,2,4,5-Tetramethylbenzene Methyl acetate 2-Methyl-2-butanol 2-Methyl-2-propanol 

02/24/2001 E0.025 E0.017 0.027 E0.013 E0.104

03/08/2001 NA NA NA NA NA

03/08/2001 NA NA NA NA NA

03/20/2001 E0.001 E0.001 — E0.017 0.205

04/01/2001 E0.012 E0.010 — E0.023 0.281

04/13/2001 E0.001 E0.001 — E0.030 0.320

04/13/2001 E0.014 E0.012 — E0.038 0.173

04/25/2001 E0.002 E0.002 — — E0.073

05/07/2001 E0.008 E0.006 — E0.033 0.356

05/19/2001 — — — E0.003 E0.054

05/31/2001 — — — E0.005 —

05/31/2001 — — — E0.009 E0.085

06/12/2001 NA NA NA NA NA

06/24/2001 — — — E0.014 0.293

07/05/2001 — — — E0.018 0.169

07/05/2001 E0.001 E0.001 — E0.013 E0.090

07/16/2001 — — — — —

08/08/2001 — — — — —

08/23/2001 E0.021 E0.014 — E0.064 E0.119

09/16/2001 E0.003 E0.003 — E0.007 E0.062

09/28/2001 — — — — —

Table 5B 91
Begin 

date Type Set number Air (m3) Particle weight (g) Total suspended particles 

(mg/m3

)

Phenanthrene

(64422)

Anthracene

(64231)

2-Methylanthracene

(64206)

4,5-

Methylenephenanthrene 

(64218)

C1-178 Isomers, 

methylated 

phenanthrene/

anthracenes

(64253)

*05/11/1999 GFF 99.190 261.8 0.015 58.4 NA NA NA NA NA

Top PUF 2.90 NA NA 0.150 1.10Bottom PUF 0.098 NA NA NA 0.068Total 13.00 NT NT 10.150 11.17

*06/01/1999 GFF 99.190 268.1 0.010 36.9 NA NA NA NA NA

Top PUF 3.40 NA 2.90 0.160 3.80Bottom PUF 0.190 NA NA NA 0.270Total 13.59 NT 12.90 10.160 14.07

*06/22/1999 GFF 99.190 252.9 0.012 46.3 NA NA NA NA NAjar broke Top PUF NA NA NA NA NAjar broke Bottom PUF NA NA NA NA NA

Total NT NT NT NT NT

*07/13/1999 GFF 99.348 220.4 0.007 29.5

—

—

—

— E0.040

Top PUF 4.20

—

— E0.230 2.10

Bottom PUF E1.40

—

—

— E0.250

Total E5.60

—

— E0.230 E2.39

*08/03/1999 GFF 99.348 228.1 0.002 7.9

—

—

—

— E0.031

Top PUF 3.00

—

— E0.160 1.60

Bottom PUF 0.770

—

—

— E0.190

Total 3.77

—

— E0.160 E1.82 1See footnote at end of table.

92 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001 Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California. [The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]
Begin 

date Type Set number Air (m3) Particle weight (g) Total suspended particles (mg/m3) Phenanthrene (64422) Anthracene (64231) 2-Methyl- anthracene (64206) 4,5- Methylene- phenanthrene (64218) C1-178 Isomers, methylated phenanthrene/ anthracenes (64253)

*08/24/1999 GFF 99.348 261.5 0.008 31.7 — — E0.017 — —

Top PUF 4.90 — — 0.380 3.30Bottom PUF 3.00 — — E0.017 —

Total 7.90 — E0.017 E0.397 3.30

*09/14/1999 GFF 99.348 253.7 0.010 39.0 E0.012 — — — E0.037

Top PUF 2.80 — — E0.180 1.40Bottom PUF 0.590 — — — E0.110Total E3.40 — — E0.180 E1.55

10/05/1999 GFF 99.348 259.9 0.014 54.2 E0.041 — — — —

Top PUF 6.00 E0.130 — 0.470 3.70Bottom PUF 2.60 — — — —Total E8.64 E0.130 — 0.470 3.70

10/26/1999 GFF 99.348 274.5 0.015 55.7 E0.045 — — — E0.075

Top PUF 6.20 E0.220 E0.041 0.520 3.60

Bottom PUF 1.80 — — — —Total E8.04 E0.220 E0.041 0.520 E3.68

11/16/1999 GFF 99.348 307.6 0.007 21.1 E0.027 — — — E0.029

Top PUF 5.00 E0.140 0.025 0.380 2.40Bottom PUF 0.390 — — — E0.230Total E5.42 E0.140 0.025 0.380 E2.66

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

Table 6  93
Begin 

date Type Set number Air (m3) Particle weight (g) Total suspended particles 

(mg/m3

)

Phenanthrene

(64422)

Anthracene

(64231)

2-Methylanthracene

(64206)

4,5-

Methylenephenanthrene 

(64218)

C1-178 Isomers, 

methylated 

phenanthrene/

anthracenes

(64253)

12/07/1999 GFF 99.348 289.3 0.011 36.6 E0.030

—

—

— E0.033

Top PUF 7.20 E0.220

— 0.690 3.90

Bottom PUF E0.073

—

—

— E0.022

Total E7.30 E0.220

— 0.690 E3.96

01/04/2000 GFF 00.222 393.5 0.016 39.4 0.061 E0.017

— E0.020 0.068

Top PUF 10.9 0.200 E0.025 0.770 4.50Bottom PUF 0.063

—

— E0.046

—

Total 11.0 E0.217 E0.025 E0.836 4.57

03/28/2000 GFF 00.222 584.5 0.023 38.7 E0.018 E0.010

—

— E0.014

Top PUF 3.10

— E0.016 0.230 1.70

Bottom PUF 0.980

—

— E0.029 E0.045

Total E4.10 E0.010 E0.016 E0.259 E1.76

04/25/2000 GFF 00.222 474.4 0.023 48.9 E0.022 E0.012

— E0.012 E0.028

Top PUF 2.80 E0.029 E0.016 0.210 1.70

Bottom PUF 2.80 E0.022

— E0.032 E0.075

Total E5.62 E0.063 E0.016 E0.254 E1.80

05/23/2000 GFF 00.222 550.4 0.021 38.7 E0.021

—

— E0.014 E0.019

Top PUF 2.60 0.031 E0.017 0.210 1.90Bottom PUF 1.10 E0.019

— E0.032

—

Total E3.72 E0.050 E0.017 0.210 E1.92

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

94  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Begin 

date Type Set number Air (m3) Particle weight (g) Total suspended particles (mg/m3) Phenanthrene (64422) Anthracene (64231) 2-Methyl- anthracene (64206) 4,5- Methylene- phenanthrene (64218) C1-178 Isomers, methylated phenanthrene/ anthracenes (64253)

06/20/2000 GFF 00.222 541.5 0.024 44.1 E0.026 — — — E0.026

Top PUF 0.970 E0.027 — 0.088 0.950Bottom PUF 2.10 — E0.014 E0.049 0.300

Total E3.10 E0.027 E0.014 E0.137 E1.28

07/18/2000 GFF 00.222 523.7 0.032 61.5 E0.023 — — E0.011 E0.024

Top PUF 3.30 E0.034 — 0.280 2.70Bottom PUF 2.30 — — 0.072 0.380Total E5.62 E0.034 — E0.363 E3.10

08/15/2000 GFF 02.037 504.4 0.029 57.5 E0.018 E0.013 — — —

Top PUF 2.00 E0.040 — 0.230 2.20Bottom PUF 2.50 E0.050 — E0.056 0.300Total E4.52 E0.103 — E0.286 2.50

10/10/2000 GFF 02.037 316.6 0.024 76.8 — — — — —ruined Top PUF NA NA NA NA NAruined Bottom PUF NA NA NA NA NA

Total — — — — —

11/07/2000 GFF 02.037 329.5 0.007 21.2 E0.034 E0.028 E0.027 — E0.061

ruined Top PUF NA NA NA NA NAruined Bottom PUF NA NA NA NA NA

Total 1E0.034 1E0.028 1E0.027 — 1E0.061

12/05/2000 GFF 02.037 348.8 0.011 31.5 E0.048 0.019 — — E0.061

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

Table 6  95
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date Type Set number Air (m3) Particle weight (g) Total suspended particles 

(mg/m3

)

Phenanthrene

(64422)

Anthracene

(64231)

2-Methylanthracene

(64206)

4,5-

Methylenephenanthrene 

(64218)

C1-178 Isomers, 

methylated 

phenanthrene/

anthracenes

(64253)

Top PUF 6.40 0.300 E0.083 0.410 3.20Bottom PUF E0.095 E0.019

—

—

—

Total E6.54 E0.338 E0.083 0.410 E3.26

01/02/2001 GFF 02.037 315.7 0.022 70.3 E0.065 E0.035

—

— E0.094

Top PUF NA NA NA NA NABottom PUF NA NA NA NA NATotal 1E0.065 1E0.035

—

— 1E0.094

01/30/2001 GFF 02.937 360.4 0.014 37.7 E0.058 E0.026

—

— E0.078

Top PUF 8.40 E0.660 E0.120 E0.660 5.20

Bottom PUF NA NA NA NA NATotal 1E8.46 1E0.686 1E0.120 1E0.660 1E5.28

02/27/2001 GFF 02.037 234.1 0.009 39.3 E0.048 E0.029

—

— E0.084

Top PUF 8.10 0.330 E0.087 0.650 4.60

Bottom PUF 0.300 0.029

—

— E0.070

Total E8.45 E0.388 E0.087 0.650 E4.75

03/27/2001 GFF 02.037 338.8 0.022 65.5 E0.030 E0.020

—

—

—

Top PUF 2.20

—

— 0.160 1.50

Bottom PUF 0.200

—

—

—

—

Total E2.43 E0.020

— 0.160 1.50

06/19/2001 GFF 02.037 287.9 0.012 42.4

—

—

—

—

—

1See footnote at end of table.

96  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Begin 

date Type Set number Air (m3) Particle weight (g) Total suspended particles (mg/m3) Phenanthrene (64422) Anthracene (64231) 2-Methyl- anthracene (64206) 4,5- Methylene- phenanthrene (64218) C1-178 Isomers, methylated phenanthrene/ anthracenes (64253)

Top PUF 4.00 — — 0.210 2.80Bottom PUF 0.780 — — — —Total 4.78 — — 0.210 2.80

08/08/2001 GFF 02.9037 288.0 0.015 50.7 E0.020 — — — —

Top PUF 4.60 E0.060 — — 2.50Bottom PUF 1.80 — — — —Total E6.42 E0.060 — — 2.50

09/04/2001 GFF 02.037 281.5 0.014 48.3 E0.020 — — — —

Top PUF 3.40 E0.050 — 0.220 3.90Bottom PUF 1.20 — — — —Total E4.62 E0.050 — 0.220 3.90

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

Table 6  97
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

Begin 

date 

1-Methylphenanthrene

(64193)

C2-178 Isomers, 

C2-alkylated 

phenanthrene/

anthracenes

(64258)

Fluoranthene

(64335)

Pyrene

(64437)

C3-178 Isomers, 

C3-alkylated 

phenanthrene/

anthracenes

(64263)

C4-178 Isomers, 

C4-alkylated 

phenanthrene/

anthracenes

(64268)

1-Methylpyrene

(64194)

C1-202 

Isomers, 

methylated 

fluoranthene/

pyrenes

(64254)

C2-202 

Isomers, 

C2-alkylated 

fluoranthene/

pyrenes

(64259)

C5-178

Isomers, 

C5-alkylated 

phenanthrene/

anthracenes

(64273)

Benz(a)

anthracene

(64237)

*05/11/1999 NA NA 0.021 0.016 NA NA NA NA NA NA NA

0.150 0.550 0.660 0.330 0.120 NA NA 0.160 NA NA NA0.006 NA 0.019 0.010 NA NA NA NA NA NA NA

10.156 10.550 0.700 0.356 10.120 NT NT 10.160 NT NT NT

*06/01/1999 NA NA 0.021 0.019 NA NA NA NA NA NA NA

0.210 0.690 0.680 0.430 0.110 NA NA 0.220 NA NA NA

NA NA 0.017 0.008 NA NA NA NA NA NA NA

10.210 10.690 0.718 0.457 10.110 NT NT 10.220 NT NT NT

*06/22/1999 NA NA 0.032 0.029 NA NA NA NA NA NA 0.001jar broke NA NA NA NA NA NA NA NA NA NA NAjar broke NA NA NA NA NA NA NA NA NA NA NA

NT NT 10.032 10.029 NT NT NT NT NT NT 10.001

*07/13/1999

— E0.093 E0.021 E0.020

—

—

—

—

—

— E0.019

0.350 0.800 1.20 0.610 0.220

— E0.030 E0.160

—

—

—

E0.024 E0.120 E0.038 E0.026

—

—

—

—

—

—

—

E0.374 E1.01 E1.26 E0.656 0.220

— E0.030 E0.160

—

— E0.019

*08/03/1999

— E0.062 E0.010 0.008

—

—

—

—

—

—

—

0.260 0.600 0.860 0.500 E0.140

— E0.027 E0.110

—

—

—

— E0.220 E0.020 0.016

—

—

—

—

—

—

—

0.260 E0.882 E0.890 0.524 E0.140

— E0.027 E0.110

—

—

—

98  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

1-Methylphenanthrene

(64193)

C2-178 Isomers, 

C2-alkylated 

phenanthrene/

anthracenes

(64258)

Fluoranthene

(64335)

Pyrene

(64437)

C3-178 Isomers, 

C3-alkylated 

phenanthrene/

anthracenes

(64263)

C4-178 Isomers, 

C4-alkylated 

phenanthrene/

anthracenes

(64268)

1-Methylpyrene

(64194)

C1-202 

Isomers, 

methylated 

fluoranthene/

pyrenes

(64254)

C2-202 

Isomers, 

C2-alkylated 

fluoranthene/

pyrenes

(64259)

C5-178

Isomers, 

C5-alkylated 

phenanthrene/

anthracenes

(64273)

Benz(a)

anthracene

(64237)

*08/24/1999 — E0.088 E0.020 0.020 — — — — — — —

0.510 1.50 1.80 0.930 0.350 — E0.038 E0.230 — — —

E0.023 E0.200 E0.024 0.018 — — — — — — —E0.533 E1.79 E1.84 0.968 0.350 — E0.038 E0.230 — — —

*09/14/1999 — E0.086 E0.025 E0.028 — — — — — — E0.018

E0.210 0.490 E0.810 0.430 E0.140 — E0.024 E0.140 — — —

— E0.160 E0.013 E0.011 — — — — — — —

E0.210 E0.736 E0.848 E0.469 E0.140 — E0.024 E0.140 — — E0.018

10/05/1999 E0.008 E0.072 E0.044 E0.050 — — E0.016 — — — E0.022

0.550 1.40 1.80 1.10 0.380 — E0.047 0.340 — — E0.026

— — E0.017 E0.010 — — — — — — —

E0.558 E1.47 E1.86 E1.16 0.380 — E0.063 0.340 — — E0.048

10/26/1999 E0.005 E0.086 E0.068 E0.077 E0.030 — E0.018 E0.049 — — E0.031

0.540 1.40 1.80 1.30 0.440 — E0.053 0.480 — — E0.039

— — E0.015 E0.010 — — — — — — —

E0.545 E1.49 E1.88 E1.39 E0.470 — E0.071 E0.529 — — E0.070

11/16/1999 — E0.052 E0.028 E0.034 — — E0.013 E0.048 — — E0.028

0.480 1.10 1.40 1.20 0.390 — E0.066 0.530 — — E0.048

E0.023 E0.200 E0.034 E0.030 — — — — — — E0.021E0.503 E1.35 E1.46 E1.26 0.390 — E0.079 E0.578 — — E0.097

1See footnote at end of table.

Table 6  99
Begin 

date 

1-Methylphenanthrene

(64193)

C2-178 Isomers, 

C2-alkylated 

phenanthrene/

anthracenes

(64258)

Fluoranthene

(64335)

Pyrene

(64437)

C3-178 Isomers, 

C3-alkylated 

phenanthrene/

anthracenes

(64263)

C4-178 Isomers, 

C4-alkylated 

phenanthrene/

anthracenes

(64268)

1-Methylpyrene

(64194)

C1-202 

Isomers, 

methylated 

fluoranthene/

pyrenes

(64254)

C2-202 

Isomers, 

C2-alkylated 

fluoranthene/

pyrenes

(64259)

C5-178

Isomers, 

C5-alkylated 

phenanthrene/

anthracenes

(64273)

Benz(a)

anthracene

(64237)

12/07/1999

—

— E0.059 E0.067

—

— E0.019 E0.063 E0.078

— E0.055

0.910 1.70 1.70 1.40 0.780 0.160 E0.120 E0.980 E0.180

— E0.085

—

— E0.029 E0.028

—

— E0.014

—

—

— E0.031

0.910 1.70 E1.79 E1.50 0.780 0.160 E0.153 E1.04 E0.258

— E0.171

01/04/2000 E0.021 0.090 0.150 0.170 0.340

— E0.033 E0.230

—

— 0.120

0.880 2.30 2.20 1.90 2.20

— 0.140 1.300

—

— 0.078

—

— E0.032 E0.033

—

—

—

—

—

— E0.022

E0.901 2.39 E2.38 E2.10 2.54

— E0.173 E1.53

—

— E0.220

03/28/2000

—

— E0.025 E0.025

—

— E0.013 E0.024 E0.048

— E0.010

0.280 0.720 0.890 0.550 0.690

— E0.030 0.250 0.110

— E0.007

—

— E0.013 E0.012

—

—

—

—

—

—

—

0.280 0.720 E0.928 E0.587 0.690

— E0.043 E0.274 E0.158

— E0.017

04/25/2000 E0.011 E0.02 E0.032 E0.030

—

— E0.016 E0.029 0.068

— E0.012

0.260 0.700 0.940 0.450 0.930

— E0.033 0.240 0.110

—

—

—

— E0.010

—

—

—

—

—

—

—

—

E0.271 E0.720 E0.982 E0.480 0.930

— E0.049 E0.269 0.178

— E0.012

05/23/2000

—

— E0.034 E0.026

—

—

—

—

—

— E0.013

0.260 0.760 0.820 0.450 1.00

— E0.023 0.260

—

—

—

—

— E0.009

—

—

—

—

—

—

—

—

0.260 0.760 E0.863 E0.476 1.00

— E0.023 0.260

—

— E0.013

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

100 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Begin 

date 

1-Methylphenanthrene

(64193)

C2-178 Isomers, 

C2-alkylated 

phenanthrene/

anthracenes

(64258)

Fluoranthene

(64335)

Pyrene

(64437)

C3-178 Isomers, 

C3-alkylated 

phenanthrene/

anthracenes

(64263)

C4-178 Isomers, 

C4-alkylated 

phenanthrene/

anthracenes

(64268)

1-Methylpyrene

(64194)

C1-202 

Isomers, 

methylated 

fluoranthene/

pyrenes

(64254)

C2-202 

Isomers, 

C2-alkylated 

fluoranthene/

pyrenes

(64259)

C5-178

Isomers, 

C5-alkylated 

phenanthrene/

anthracenes

(64273)

Benz(a)

anthracene

(64237)

06/20/2000 — — E0.031 E0.032 — — — E0.026 — — E0.011

0.110 0.340 0.430 0.210 0.200 — E0.018 0.100 E0.048 — —0.030 — — — — — — — — — —0.140 0.340 E0.461 E0.242 0.200 — E0.018 E0.126 E0.048 — E0.011

07/18/2000 — E0.017 E0.030 E0.031 — — — E0.039 — — E0.011

0.410 1.10 1.30 0.740 1.60 — E0.042 0.330 0.140 — —

E0.04 — E0.021 E0.012 — — — — — — —

E0.450 E1.12 E1.35 E0.783 1.60 — E0.042 E0.369 0.140 — E0.011

08/15/2000 — — E0.024 E0.026 — — — — — — E0.017

0.330 0.940 1.10 0.600 0.270 — E0.020 — — — —

E0.045 — E0.023 — — — E0.140 — — — —E0.375 0.940 E1.15 E0.626 0.270 — E0.160 — — — E0.017

10/10/2000 — — — — — — — — — — —

NA NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA NA— — — — — — — — — — —

11/07/2000 E0.023 — E0.062 E0.069 — — E0.028 — — — E0.110

NA NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA NA

1E0.023 — 1E0.062 1E0.069 — — 1E0.028 — — — 1E0.110

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

Table 6  101
Begin 

date 

1-Methylphenanthrene

(64193)

C2-178 Isomers, 

C2-alkylated 

phenanthrene/

anthracenes

(64258)

Fluoranthene

(64335)

Pyrene

(64437)

C3-178 Isomers, 

C3-alkylated 

phenanthrene/

anthracenes

(64263)

C4-178 Isomers, 

C4-alkylated 

phenanthrene/

anthracenes

(64268)

1-Methylpyrene

(64194)

C1-202 

Isomers, 

methylated 

fluoranthene/

pyrenes

(64254)

C2-202 

Isomers, 

C2-alkylated 

fluoranthene/

pyrenes

(64259)

C5-178

Isomers, 

C5-alkylated 

phenanthrene/

anthracenes

(64273)

Benz(a)

anthracene

(64237)

12/05/2000

—

— E0.069 E0.079

—

— E0.024 E0.095

—

— E0.063

0.550 1.30 1.50 1.20 E0.490

— E0.078

—

—

— E0.060

—

—

—

—

—

—

—

—

—

—

—

0.550 1.30 E1.57 E1.28 E0.490

— E0.102 E0.095

—

— E0.123

01/02/2001 E0.027 E0.093 E0.120 E0.130

—

— E0.029

—

—

— E0.120

NA NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA NA

1E0.027 1E0.093 1E0.120 1E0.130

—

— 1E0.029

—

—

— 1E0.120

01/30/2001 E0.023 E0.079 E0.100 E0.120 E0.048

— E0.024 E0.110 0.210

— E0.079

E0.750 E1.80 1.80 1.50 E0.680

— E0.120 E0.970 E0.810

— E0.210

NA NA NA NA NA NA NA NA NA NA NA

1E0.773 1E1.88 1E1.90 1E1.62 1E0.728

— 1E0.144 1E1.08 1E1.02

— 1E0.289

02/27/2001

—

— E0.070 E0.076

—

—

— E0.076 0.150

— E0.062

0.860 2.10 2.20 1.70 0.920

— E0.120 0.550 0.870

— E0.100

—

— E0.031

—

—

— E0.0150

—

—

—

—

0.860 2.10 E2.30 E1.78 0.920

— E0.135 E0.626 1.020

— E0.162

03/27/2001

—

— E0.040 E0.040

—

—

—

—

—

— E0.020

0.190 0.420 0.620 0.300

—

— E0.020 E0.140

—

—

—

—

—

—

—

—

— E0.040

—

—

—

—

0.190 0.420 E0.660 E0.340

—

— E0.060 E0.140

—

— E0.020

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

102 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Begin 

date 

1-Methylphenanthrene

(64193)

C2-178 Isomers, 

C2-alkylated 

phenanthrene/

anthracenes

(64258)

Fluoranthene

(64335)

Pyrene

(64437)

C3-178 Isomers, 

C3-alkylated 

phenanthrene/

anthracenes

(64263)

C4-178 Isomers, 

C4-alkylated 

phenanthrene/

anthracenes

(64268)

1-Methylpyrene

(64194)

C1-202 

Isomers, 

methylated 

fluoranthene/

pyrenes

(64254)

C2-202 

Isomers, 

C2-alkylated 

fluoranthene/

pyrenes

(64259)

C5-178

Isomers, 

C5-alkylated 

phenanthrene/

anthracenes

(64273)

Benz(a)

anthracene

(64237)

06/19/2001 — — — — — — — — — — —

0.270 0.650 0.890 0.390 — — E0.030 E0.130 — — —

— — — — — — E0.020 — — — —

0.270 0.650 0.890 0.390 — — E0.050 E0.130 — — —

08/08/2001 — — E0.030 E0.040 — — — — — — —

0.370 1.00 1.20 0.570 0.210 — E0.030 — — — —

— — — — — — E0.070 — — — —

0.370 1.00 E1.23 E0.610 0.210 — E0.100 — — — —

09/04/2001 — — E0.030 E0.030 — — — — — — —

0.280 0.720 0.870 0.490 E0.170 — 0.550 0.200 — — —

— — — — — — — — — — —

Total 0.280 0.720 E0.900 E0.520 E0.170 — 0.550 0.200 — — —

1See footnote at end of table.

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Table 6  103
Begin 

date 

Chrysene

(64285)

C3-202 Isomers, 

C3-alkylated 

fluoranthene/

pyrenes

(64264)

C1-228 Isomers, 

methylated 

benzo(a)

anthracene/

chrysenes

(64255)

C4-202 

Isomers, 

C4-alkylated 

fluoranthene/

pyrenes

(64269)

C5-202 

Isomers, 

C5-alkylated 

fluoranthene/

pyrenes

(64274)

C2-228 Isomers, 

C2-alkylated 

benzo(a)-

anthracene/

chrysenes

(64260)

Benzo(

b)

fluoranthene

(64239)

Benzo(

k)

fluoranthene

(64242)

Benzo(e)

pyrene

(64240)

Benzo(a)

pyrene

(64238)

*05/11/1999 0.011 NA NA NA NA NA 0.028 0.006 0.035 0.021

0.027 NA NA NA NA NA NA NA NA NA

NA NA NA NA NA NA NA NA NA NA

10.038 NT NT NT NT NT 10.028 10.006 10.035 10.021

*06/01/1999 0.014 NA NA NA NA NA 0.053 NA 0.037 NA

0.034 NA NA NA NA NA NA NA NA NA0.001 NA NA NA NA NA NA NA NA NA0.049 NT NT NT NT NT 10.053 NT 10.037 NT

*06/22/1999 0.020 NA NA NA NA NA 0.039 0.017 0.047 NAjar broke NA NA NA NA NA NA NA NA NA NAjar broke NA NA NA NA NA NA NA NA NA NA

10.020 NT NT NT NT NT 10.039 10.017 10.047 NT

*07/13/1999 E0.017

—

—

—

—

— E0.021 E0.010 E0.020

—

E0.047

—

—

—

—

— E0.007 E0.006 E0.005

—

—

—

—

—

—

—

—

—

—

—

E0.064

—

—

—

—

— E0.028 E0.016 E0.025

—

*08/03/1999 E0.007

—

—

—

—

— E0.010 E0.006 E0.009

—

E0.050

—

—

—

—

— E0.013 E0.008 E0.015

—

—

—

—

—

—

— E0.009 E0.009 E0.007

—

E0.057

—

—

—

—

— E0.032 E0.023 E0.031

—

Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

1See footnote at end of table.

104  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Chrysene

(64285)

C3-202 Isomers, 

C3-alkylated 

fluoranthene/

pyrenes

(64264)

C1-228 Isomers, 

methylated 

benzo(a)

anthracene/

chrysenes

(64255)

C4-202 

Isomers, 

C4-alkylated 

fluoranthene/

pyrenes

(64269)

C5-202 

Isomers, 

C5-alkylated 

fluoranthene/

pyrenes

(64274)

C2-228 Isomers, 

C2-alkylated 

benzo(a)-

anthracene/

chrysenes

(64260)

Benzo(b)

fluoranthene

(64239)

Benzo(k)

fluoranthene

(64242)

Benzo(e)

pyrene

(64240)

Benzo(a)

pyrene

(64238)

*08/24/1999 E0.017 — — — — — E0.021 E0.010 E0.018 —

E0.076 — — — — — E0.016 E0.011 E0.016 —

— — — — — — E0.010 E0.007 E0.010 —

E0.093 — — — — — E0.047 E0.028 E0.044 —

*09/14/1999 E0.018 — — — — — E0.024 E0.019 E0.024 E0.032

E0.033 — — — — — E0.014 E0.011 E0.006 —

— — — — — — E0.007 E0.005 E0.005 —

E0.051 — — — — — E0.045 E0.035 E0.035 E0.032

10/05/1999 E0.042 — — — — — E0.066 E0.033 E0.074 —

E0.079 — — — — — E0.017 E0.014 E0.017 —

— — — — — — E0.010 E0.010 E0.006 E0.028

E0.121 — — — — — E0.093 E0.057 E0.097 E0.028

10/26/1999 E0.060 — E0.051 — — — E0.150 E0.094 E0.206 —

E0.098 — — — — — E0.024 E0.017 E0.024 E0.029

E0.015 — — — — — E0.008 E0.008 E0.007 E0.028

E0.173 — E0.051 — — — E0.182 E0.119 E0.237 E0.057

11/16/1999 E0.048 — E0.050 — — — E0.081 E0.062 E0.086 E0.029

E0.150 — E0.042 — — — E0.037 E0.032 E0.039 —E0.013 — — — — — E0.022 E0.019 E0.027 E0.031

E0.211 — E0.092 — — — E0.140 E0.113 E0.152 E0.060

1See footnote at end of table.

Table 6  105
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Chrysene

(64285)

C3-202 Isomers, 

C3-alkylated 

fluoranthene/

pyrenes

(64264)

C1-228 Isomers, 

methylated 

benzo(a)

anthracene/

chrysenes

(64255)

C4-202 

Isomers, 

C4-alkylated 

fluoranthene/

pyrenes

(64269)

C5-202 

Isomers, 

C5-alkylated 

fluoranthene/

pyrenes

(64274)

C2-228 Isomers, 

C2-alkylated 

benzo(a)-

anthracene/

chrysenes

(64260)

Benzo(

b)

fluoranthene

(64239)

Benzo(

k)

fluoranthene

(64242)

Benzo(e)

pyrene

(64240)

Benzo(a)

pyrene

(64238)

12/07/1999 E0.150

— E0.100

—

—

— 0.268 0.254 0.297 E0.042

0.300

— E0.087

—

—

— E0.086 E0.070 E0.095 E0.038

E0.032

—

—

—

—

— E0.043 E0.041 E0.053 E0.044

E0.482

— E0.187

—

—

— E0.397 E0.365 E0.445 E0.124

01/04/2000 0.320

— 0.280

—

—

— 0.360 0.370 0.340

—

0.340

— 0.120

—

—

— 0.055 E0.027 E0.042 E0.013

E0.034

—

—

—

—

— E0.043

— E0.031

—

E0.694

— 0.400

—

—

— E0.458 E0.397 E0.413 E0.013

03/28/2000 E0.023

— E0.023

—

— E0.020 E0.038 E0.037 E0.026 E0.030

E0.083

— E0.028

—

—

— E0.025 E0.005 E0.012

—

E0.005

—

—

—

—

— E0.016 E0.018 E0.006 E0.009

E0.111

— E0.051

—

— E0.020 E0.079 E0.060 E0.044 E0.039

04/25/2000 E0.030

— E0.020

—

—

— E0.044

— E0.030

—

0.076

— E0.022

—

—

— E0.022

— E0.007

—

—

—

—

—

—

—

— E0.013

— E0.010

E0.106

— E0.042

—

—

— E0.066 E0.013 E0.037 E0.010

05/23/2000 E0.040

— E0.023

—

—

— E0.034

— E0.021

—

E0.048

—

—

—

—

— E0.016

— E0.004

—

—

—

—

—

—

—

— E0.007

—

—

E0.088

— E0.023

—

—

— E0.050 E0.007 E0.025

—

1See footnote at end of table.

106  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Chrysene

(64285)

C3-202 Isomers, 

C3-alkylated 

fluoranthene/

pyrenes

(64264)

C1-228 Isomers, 

methylated 

benzo(a)

anthracene/

chrysenes

(64255)

C4-202 

Isomers, 

C4-alkylated 

fluoranthene/

pyrenes

(64269)

C5-202 

Isomers, 

C5-alkylated 

fluoranthene/

pyrenes

(64274)

C2-228 Isomers, 

C2-alkylated 

benzo(a)-

anthracene/

chrysenes

(64260)

Benzo(b)

fluoranthene

(64239)

Benzo(k)

fluoranthene

(64242)

Benzo(e)

pyrene

(64240)

Benzo(a)

pyrene

(64238)

06/20/2000 E0.028 — E0.023 — — — E0.034 — E0.026 —

E0.019 — E0.010 — — — E0.015 — — —

— — — — — — — E0.022 — E0.009

E0.047 — E0.033 — — — E0.049 E0.022 E0.026 E0.009

07/18/2000 E0.026 — E0.020 — — — E0.035 E0.015 E0.025 E0.011

0.075 — E0.019 — — — E0.016 — — —

— — — — — — — E0.015 — E0.010

E1.01 — E0.039 — v — E0.051 E0.030 E0.025 E0.021

08/15/2000 E0.017 — — — — — E0.034 E0.029 E0.021 —

E0.065 — — — — — — — — —

— — — — — — — — — —

E0.082 — — — — — E0.034 E0.029 E0.021 —

10/10/2000 E0.003 — — — — — — — — —

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA

1E0.003 — — — — — — — — —

11/07/2000 E0.170 — — — — — 0.350 0.330 0.240 E0.130

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA

1E0.170 — — — — — 10.350 10.330 10.240 1E0.130

1See footnote at end of table.

Table 6  107
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Chrysene

(64285)

C3-202 Isomers, 

C3-alkylated 

fluoranthene/

pyrenes

(64264)

C1-228 Isomers, 

methylated 

benzo(a)

anthracene/

chrysenes

(64255)

C4-202 

Isomers, 

C4-alkylated 

fluoranthene/

pyrenes

(64269)

C5-202 

Isomers, 

C5-alkylated 

fluoranthene/

pyrenes

(64274)

C2-228 Isomers, 

C2-alkylated 

benzo(a)-

anthracene/

chrysenes

(64260)

Benzo(

b)

fluoranthene

(64239)

Benzo(

k)

fluoranthene

(64242)

Benzo(e)

pyrene

(64240)

Benzo(a)

pyrene

(64238)

12/05/2000 E0.120

—

—

—

—

— 0.200 0.270 0.190

—

E0.130

—

—

—

—

— E0.032

—

—

—

—

—

—

—

—

—

—

—

—

—

E0.250

—

—

—

—

— E0.232 0.270 0.190

—

01/02/2001 0.270

—

—

—

—

— 0.480 0.420 0.330

—

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA

10.270

—

—

—

—

— 10.480 10.420 10.330

—

01/30/2001 E0.100

— E0.098

—

—

— 0.380 0.340 0.290 0.140

E0.380 E0.210

—

—

—

— E0.140 E0.084 E0.044

—

NA NA NA NA NA NA NA NA NA NA

1E0.480 1E0.210 1E0.098

—

—

— 1E0.520 1E0.424 1E0.334 10.140

02/27/2001 E0.092 E0.130

—

—

—

— 0.420 0.240 0.240 E0.077

0.400 0.200 0.180

—

—

— E0.097 E0.071 E0.034

—

—

—

—

—

—

—

—

—

—

—

E0.492 E0.330 0.180

—

—

— E0.517 E0.311 E0.274 E0.077

03/27/2001 E0.020

—

—

—

—

—

—

—

—

—

E0.030

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

E0.050

—

—

—

—

—

—

—

—

—

1See footnote at end of table.

108  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Chrysene

(64285)

C3-202 Isomers, 

C3-alkylated 

fluoranthene/

pyrenes

(64264)

C1-228 Isomers, 

methylated 

benzo(a)

anthracene/

chrysenes

(64255)

C4-202 

Isomers, 

C4-alkylated 

fluoranthene/

pyrenes

(64269)

C5-202 

Isomers, 

C5-alkylated 

fluoranthene/

pyrenes

(64274)

C2-228 Isomers, 

C2-alkylated 

benzo(a)-

anthracene/

chrysenes

(64260)

Benzo(b)

fluoranthene

(64239)

Benzo(k)

fluoranthene

(64242)

Benzo(e)

pyrene

(64240)

Benzo(a)

pyrene

(64238)

06/19/2001 — — — — — — — — — —

E0.040 — — — — — — — — —

— — — — — — — — — —

E0.040 — — — — — — — — —

08/08/2001 E0.020 — — — — — — — — —

E0.050 — — — — — — — — —

— — — — — — — — — —

E0.070 — — — — — — — — —

09/04/2001 E0.020 — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —

Total E0.020 — — — — — — — — —

1See footnote at end of table.

Table 6  109
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Perylene

(64421)

C1-252 

Isomers, C1-

methylated 

benzopyrene/

perylenes

(64256)

C3-228

Isomers, 

C3-alkylated 

benzo(a)-

anthracene/

chrysenes

(64265)

C2-252 

Isomers, 

C2-alkylated 

benzopyrene/

perylenes

(64261)

C4-228

Isomers, 

C4-alkylated 

benzo(a)-

anthracene/

chrysenes

(64270)

Benzo(ghi)

perylene

(64241)

Indeno

(1,2,3-cd)

pyrene

(64343)

Dibenz(a,h)-

anthracene

(64302)

C3-252 

Isomers, 

C3-alkylated 

benzopyrene/

perylenes

(64266)

C4-252 Isomers, 

C4-alkylated 

benzopyrene/

perylenes

(64271)

*05/11/1999 NA NA NA NA NA 0.045 NA NA NA NA

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NANT NT NT NT NT 10.045 NT NT NT NT

*06/01/1999 NA NA NA NA NA 0.048 0.036 NA NA NA

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NANT NT NT NT NT 10.048 10.036 NT NT NT

*06/22/1999 NA NA NA NA NA 0.055 0.036 NA NA NAjar broke NA NA NA NA NA NA NA NA NA NAjar broke NA NA NA NA NA NA NA NA NA NA

NT NT NT NT NT 10.055 10.036 NT NT NT

*07/13/1999

—

—

—

—

— E0.024 E0.017 E0.034

—

—

—

—

—

—

— E0.008

—

—

—

—

—

—

—

—

— E0.009

—

—

—

—

—

—

—

—

— E0.041 E0.017 E0.034

—

—

*08/03/1999

—

—

—

—

— E0.012 E0.013

—

—

—

—

—

—

—

— E0.014 E0.008

—

—

—

—

—

—

—

— E0.016 E0.021

—

—

—

—

—

—

—

— E0.042 E0.042

—

—

— 1See footnote at end of table.

110 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Perylene

(64421)

C1-252 

Isomers, C1-

methylated 

benzopyrene/

perylenes

(64256)

C3-228

Isomers, 

C3-alkylated 

benzo(a)-

anthracene/

chrysenes

(64265)

C2-252 

Isomers, 

C2-alkylated 

benzopyrene/

perylenes

(64261)

C4-228

Isomers, 

C4-alkylated 

benzo(a)-

anthracene/

chrysenes

(64270)

Benzo(ghi)

perylene

(64241)

Indeno

(1,2,3-cd)

pyrene

(64343)

Dibenz(a,h)-

anthracene

(64302)

C3-252 

Isomers, 

C3-alkylated 

benzopyrene/

perylenes

(64266)

C4-252 Isomers, 

C4-alkylated 

benzopyrene/

perylenes

(64271)

*08/24/1999 E0.026 — — — — E0.026 E0.027 — — —

— — — — — E0.019 E0.018 — — —— — — — — E0.014 E0.019 — — —

E0.026 — — — — E0.059 E0.064 — — —

*09/14/1999 — — — — — E0.037 E0.033 — — —

E0.018 — — — — E0.016 E0.024 — — —E0.018 — — — — E0.011 — — — —E0.036 — — — — E0.064 E0.057 — — —

10/05/1999 — — — — — 0.107 E0.054 E0.012 — —

— — — — — E0.026 E0.029 — — —

E0.016 — — — — E0.023 E0.029 — — —E0.016 — — — — E0.156 E0.112 E0.012 — —

10/26/1999 — — — — — 0.262 E0.140 — — —

— — — — — E0.039 E0.040 — — —— — — — — E0.017 E0.020 — — —— — — — — E0.318 E0.200 — — —

11/16/1999 E0.014 — — — — E0.091 E0.067 E0.014 — —

— — — — — E0.044 E0.032 — — —

E0.014 — — — — E0.036 E0.026 — — —E0.028 — — — — E0.171 E0.125 E0.014 — —

1See footnote at end of table.

Table 6  111
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Perylene

(64421)

C1-252 

Isomers, C1-

methylated 

benzopyrene/

perylenes

(64256)

C3-228

Isomers, 

C3-alkylated 

benzo(a)-

anthracene/

chrysenes

(64265)

C2-252 

Isomers, 

C2-alkylated 

benzopyrene/

perylenes

(64261)

C4-228

Isomers, 

C4-alkylated 

benzo(a)-

anthracene/

chrysenes

(64270)

Benzo(ghi)

perylene

(64241)

Indeno

(1,2,3-cd)

pyrene

(64343)

Dibenz(a,h)-

anthracene

(64302)

C3-252 

Isomers, 

C3-alkylated 

benzopyrene/

perylenes

(64266)

C4-252 Isomers, 

C4-alkylated 

benzopyrene/

perylenes

(64271)

12/07/1999

— E0.162

— E0.071

— 0.290 0.254 E0.040

—

—

—

—

—

—

— E0.091 E0.058 E0.014

—

—

E0.013

—

—

—

— E0.059 E0.040 E0.021

—

—

E0.013 E0.162

— E0.071

— E0.440 E0.352 E0.075

—

—

01/04/2000

— 0.390

—

—

— 0.440 0.300 0.050

—

—

—

—

—

—

— E0.047 E0.029 E0.015

—

—

—

—

—

—

— E0.041 E0.027 E0.013

—

—

— 0.390

—

—

— E0.488 E0.356 E0.078

—

—

03/28/2000 E0.009 E0.017

—

—

— E0.040 E0.026

—

—

—

E0.005

—

—

—

— E0.012 E0.011

—

—

—

—

—

—

—

— E0.008 E0.010

—

—

—

E0.014 E0.017

—

—

— E0.060 E0.047

—

—

—

04/25/2000 E0.014

—

—

—

— E0.046 E0.027

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

E0.014

—

—

—

— E0.046 E0.027

—

—

—

05/23/2000 E0.007

—

—

—

— E0.028 E0.022 E0.012

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

E0.007

—

—

—

— E0.028 E0.022 E0.012

—

—

1See footnote at end of table.

112 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Perylene

(64421)

C1-252 

Isomers, C1-

methylated 

benzopyrene/

perylenes

(64256)

C3-228

Isomers, 

C3-alkylated 

benzo(a)-

anthracene/

chrysenes

(64265)

C2-252 

Isomers, 

C2-alkylated 

benzopyrene/

perylenes

(64261)

C4-228

Isomers, 

C4-alkylated 

benzo(a)-

anthracene/

chrysenes

(64270)

Benzo(ghi)

perylene

(64241)

Indeno

(1,2,3-cd)

pyrene

(64343)

Dibenz(a,h)-

anthracene

(64302)

C3-252 

Isomers, 

C3-alkylated 

benzopyrene/

perylenes

(64266)

C4-252 Isomers, 

C4-alkylated 

benzopyrene/

perylenes

(64271)

06/20/2000 — — — — — E0.045 E0.026 — — —

— — — — — — E0.011 — — —— — — — — — — — — —— — — — — E0.045 E0.037 — — —

07/18/2000 — — — — — E0.042 E0.026 — — —

— — — — — — — — — —— — — — — — — — — —— — — — — E0.042 E0.026 — — —

08/15/2000 — — — — — E0.027 E0.022 — — —

— — — — — — — — — —— — — — — — — — — —— — — — — E0.027 E0.022 — — —

10/10/2000 — — — — — — — — — —

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA— — — — — — — — — —

11/07/2000 E0.028 E0.034 — — — E0.320 E0.300 E0.058 — —

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA

1E0.028 1E0.034 — — — 1E0.320 1E0.300 1E0.058 — —

1See footnote at end of table.

Table 6  113
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Perylene

(64421)

C1-252 

Isomers, C1-

methylated 

benzopyrene/

perylenes

(64256)

C3-228

Isomers, 

C3-alkylated 

benzo(a)-

anthracene/

chrysenes

(64265)

C2-252 

Isomers, 

C2-alkylated 

benzopyrene/

perylenes

(64261)

C4-228

Isomers, 

C4-alkylated 

benzo(a)-

anthracene/

chrysenes

(64270)

Benzo(ghi)

perylene

(64241)

Indeno

(1,2,3-cd)

pyrene

(64343)

Dibenz(a,h)-

anthracene

(64302)

C3-252 

Isomers, 

C3-alkylated 

benzopyrene/

perylenes

(64266)

C4-252 Isomers, 

C4-alkylated 

benzopyrene/

perylenes

(64271)

12/05/2000

—

—

—

—

— 0.310 0.220

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— 0.310 0.220

—

—

—

01/02/2001

—

—

—

—

— 0.450 0.400 0.060

—

—

NA NA NA NA NA NA NA NA NA NANA NA NA NA NA NA NA NA NA NA—

—

—

—

— 10.450 10.400 10.060

—

—

01/30/2001 E0.021

—

—

—

— 0.550 0.430 E0.050

—

—

—

—

—

—

—

—

—

—

—

—

NA NA NA NA NA NA NA NA NA NA

1E0.021

—

—

—

— 10.550 10.430 1E0.050

—

—

02/27/2001

—

—

—

—

— 0.300 0.290

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

— 0.300 0.290

—

—

—

03/27/2001

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

1See footnote at end of table.

114  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

Perylene

(64421)

C1-252 

Isomers, C1-

methylated 

benzopyrene/

perylenes

(64256)

C3-228

Isomers, 

C3-alkylated 

benzo(a)-

anthracene/

chrysenes

(64265)

C2-252 

Isomers, 

C2-alkylated 

benzopyrene/

perylenes

(64261)

C4-228

Isomers, 

C4-alkylated 

benzo(a)-

anthracene/

chrysenes

(64270)

Benzo(ghi)

perylene

(64241)

Indeno

(1,2,3-cd)

pyrene

(64343)

Dibenz(a,h)-

anthracene

(64302)

C3-252 

Isomers, 

C3-alkylated 

benzopyrene/

perylenes

(64266)

C4-252 Isomers, 

C4-alkylated 

benzopyrene/

perylenes

(64271)

06/19/2001 — — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

08/08/2001 — — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —— — — — — — — — — —

09/04/2001 — — — — — — — — — —

— — — — — — — — — —— — — — — — — — — —

Total — — — — — — — — — —

1See footnote at end of table.

Table 6  115
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

C5-228 Isomers, C5- 

alkylated benzo(a)anthracene/

chrysenes

(64275)

C5-252 Isomers, C5-

alkylated benzopyrene/

perylenes

(64276)

Coronene

(64290)

Nitrobenzene-d5

(surrogate)

(90768)

(percent)

2-Fluorobiphenyl

(surrogate)

(90761)

(percent)

Terphenyl-d14

(surrogate)

(90770)

(percent)

*05/11/1999 NA NA 0.097 33.7 48.6 82.8

NA NA NA 67.1 70.2 107NA NA NA 61.4 69.0 101—

— 10.097

*06/01/1999 NA NA 0.100 11.0 25.7 50.1

NA NA NA 64.8 67.2 100NA NA NA 55.6 59.1 99.5—

— 10.100

*06/22/1999 NA NA 0.120 29.1 44.0 71.9jar broke NA NA NA NA NA NAjar broke NA NA NA NA NA NA

—

— 10.120

*07/13/1999

—

— E0.120 49.7 64.9 89.9

—

— E0.012 73.7 76.9 92.6

—

—

— 30.9 64.7 94.1

—

— E0.132

*08/03/1999

—

— E0.019 24.3 69.4 92.2

—

— E0.018 85.1 83.0 97.7

—

— E0.022 69.6 79.7 98.9

—

— E0.059 1See footnote at end of table.

116  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

C5-228 Isomers, C5- 

alkylated benzo(a)anthracene/

chrysenes

(64275)

C5-252 Isomers, C5-

alkylated benzopyrene/

perylenes

(64276)

Coronene

(64290)

Nitrobenzene-d5

(surrogate)

(90768)

(percent)

2-Fluorobiphenyl

(surrogate)

(90761)

(percent)

Terphenyl-d14

(surrogate)

(90770)

(percent)

*08/24/1999 — — E0.032 64.3 75.8 96.7

— — E0.024 81.5 89.2 108— — E0.021 80.8 87.3 106— — E0.077

*09/14/1999 — — E0.042 63.6 70.8 89.1

— — E0.027 80.8 82.4 98.2— — E0.016 78.2 85.0 96.4— — E0.085

10/05/1999 — — 0.103 39.3 80.4 105

— — E0.032 95.2 99.0 118— — E0.026 72.2 89.4 113— — E0.161

10/26/1999 — — 0.234 33.6 78.2 112

— — E0.041 73.6 90.2 114— — E0.020 70.5 91.3 110— — E0.295

11/16/1999 — — E0.067 39.7 68.8 87.6

— — E0.031 69.4 103 114— — E0.021 83.1 126 125— — E0.119

1See footnote at end of table.

Table 6  117
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

C5-228 Isomers, C5- 

alkylated benzo(a)anthracene/

chrysenes

(64275)

C5-252 Isomers, C5-

alkylated benzopyrene/

perylenes

(64276)

Coronene

(64290)

Nitrobenzene-d5

(surrogate)

(90768)

(percent)

2-Fluorobiphenyl

(surrogate)

(90761)

(percent)

Terphenyl-d14

(surrogate)

(90770)

(percent)

12/07/1999

—

— 0.212 65.8 92.2 113

—

— E0.066 58.2 106 124

—

— E0.042 66.3 99.2 121

—

— E0.320

01/04/2000

—

— E0.280 101 95.9 122

—

— E0.033 98.0 118 128

—

— E0.026 86.3 119 132

—

— E0.339

03/28/2000

—

— E0.038 93.3 86.5 117

—

— E0.012 11.1 109 121

—

— E0.009 87.5 105 120

—

— E0.059

04/25/2000

—

— E0.046 55.2 72.7 108

—

—

— 104 113 127

—

—

— 93.0 101 121

—

— E0.046

05/23/2000

—

— 0.026 88.5 96.7 127

—

—

— 105 118 132

—

—

— 115 117 129

—

— 0.026 1See footnote at end of table.

118  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

C5-228 Isomers, C5- 

alkylated benzo(a)anthracene/

chrysenes

(64275)

C5-252 Isomers, C5-

alkylated benzopyrene/

perylenes

(64276)

Coronene

(64290)

Nitrobenzene-d5

(surrogate)

(90768)

(percent)

2-Fluorobiphenyl

(surrogate)

(90761)

(percent)

Terphenyl-d14

(surrogate)

(90770)

(percent)

06/20/2000 — — E0.043 90.8 99.1 127

— — — 32.6 35.2 41.7— — — 106 121 126— — E0.043

07/18/2000 — — E0.041 105 94.8 128

— — — 129 124 138— — — 97.5 116 128— — E0.041

08/15/2000 — — E0.021 9.14 14.7 48.9

— — — 73.2 99.8 105— — — 67.4 71.3 104— — E0.021

10/10/2000 — — — 16.3 20.9 60.2

NA NA NA NA NA NANA NA NA NA NA NA— — —

1See footnote at end of table.

Table 6  119
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

C5-228 Isomers, C5- 

alkylated benzo(a)anthracene/

chrysenes

(64275)

C5-252 Isomers, C5-

alkylated benzopyrene/

perylenes

(64276)

Coronene

(64290)

Nitrobenzene-d5

(surrogate)

(90768)

(percent)

2-Fluorobiphenyl

(surrogate)

(90761)

(percent)

Terphenyl-d14

(surrogate)

(90770)

(percent)

11/07/2000

—

— E0.130 20.5 24.3 67.6

NA NA NA NA NA NANA NA NA NA NA NA—

— 1E0.130

12/05/2000

—

— E0.130 49.1 72.0 107

—

—

— 0.00 59.9 115

—

—

— 0.00 53.8 116

—

— E0.130

01/02/2001

—

— E0.260 29.1 38.5 61.9

NA NA NA NA NA NANA NA NA NA NA NA—

— 1E0.260

01/30/2001

—

— E0.320 47.7 63.8 91.4

—

—

— 57.0 89.3 111

NA NA NA NA NA NA—

— 1E0.320

02/27/2001

—

— E0.240 24.3 34.7 68.8

—

—

— 76.9 97.8 106

—

—

— 72.0 88.7 119

—

— E0.240 1See footnote at end of table.

120 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 6. Analytical results for polycyclic aromatic hydrocarbon compounds in air for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. m3., cubic meter; E, estimated value; g, gram; NA, not analyzed; NT, no total; GFF, glass fiber filter; mg/m3, micrograms per cubic meter; PUF, polyurethane foam; *, samples collected prior to time frame of this report (water years 2000 and 2001); —, compound was not detected at a concentration above laboratory reporting level]

Begin 

date 

C5-228 Isomers, C5- 

alkylated benzo(a)anthracene/

chrysenes

(64275)

C5-252 Isomers, C5-

alkylated benzopyrene/

perylenes

(64276)

Coronene

(64290)

Nitrobenzene-d5

(surrogate)

(90768)

(percent)

2-Fluorobiphenyl

(surrogate)

(90761)

(percent)

Terphenyl-d14

(surrogate)

(90770)

(percent)

03/27/2001 — — — 23.9 34.9 74.0

— — — 73.8 93.8 95.9— — — 67.4 92.1 120— — —

06/19/2001 — — — 16.6 21.8 62.4

— — — 72.5 82.3 119— — — 62.9 80.4 120— — —

08/08/2001 — — — 34.8 33.6 115

— — — 94.5 93.6 102— — — 60.8 87.2 117— — —

09/04/2001 — — — 51.4 52.9 137

— — — 60.2 63.2 100— — — 62.8 77.3 109

Total — — —

1Partial total: Data not available for all filters.

Table 6  121
Table 7A. Pesticide compounds analyzed in air from modified U.S. Geological Survey National Water 

Quality Laboratory schedules for the Sweetwater Reservoir air sampling site, San Diego County, California.

[The site identification number is 324141117001601. Analytical results for pesticides, if detected, are shown on tables 7B,7C]

Pesticide compound names

Modified schedule 2001 Modified schedule 2002

(Detection results shown on table 7B) (Detection results shown on table 7C)

2-Chloro-4-isopropyl amino-6-amino-striazine1,4-Naphthoquinone

Acetochlor 2-(4-tert-Butylphenoxy)-cyclohexanol

Alachlor 2,5-Dichloroaniline

a-HCH 2-Amino-N-isopropylbenzamide

Atrazine 2-Chloro-2,6-diethylacetanilide

Azinphos-methyl 2-Ethyl-6-methylaniline

Benfluralin 3-Trifluoromethylaniline

Carbaryl 3,4-Dichloroaniline

Carbofuran 3,5-Dichloroaniline

Chlorpyrifos 4,4′-Dichlorobenzophenone

Cyanazine 4-Chloro-2-methylphenol

DCPA (Dacthal) 4-Chlorobenzylmethylsulfone

Diazinon a-Endosulfan

Dieldrin b-Endosulfan

Dimethoate Azinphos-methyl oxygen analog

Disulfoton Bifenthrin

a-Endosulfan cis-Propiconazole

b-Endosulfan Cycloate

Endosulfan sulfate Cyfluthrin

Ethalfluralin l-Cyhalothrin

Ethion Cypermethrin

Ethoprop Dimethoate

Fenthion sulfone Disulfoton sulfone

Fenthion sulfone oxygen analog E-Dimethomorph

Fonofos Z-Dimethomorph

Lindane Endosulfan ether

Linuron Endosulfan sulfate

Malathion Ethion

Methyl parathion Ethion monoxon

Metolachlor Fenthion

Metribuzin Fenthion sulfoxide

Molinate Flumetralin

Napropamide Fonofos oxygen analog

p,p′-DDE Iprodione

Parathion Isofenphos

122 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 7A. Pesticide compounds analyzed in air from modified U.S. Geological Survey National Water 

Quality laboratory schedules for the Sweetwater Reservoir air sampling site, San Diego County, California—

Continued.

[The site identification number is 324141117001601. Analytical results for pesticides, if detected, are shown on tables 7B,7C]

Pesticide compound names

Modified schedule 2001 Modified schedule 2002

(Detection results shown on table 7B) (Detection results shown on table 7C)

Pendimethalin Malaoxon

cis-Permethrin Methidathion

Phorate Methyl paraoxon

Prometon Myclobutanil

Pronamide O-Ethyl-O-methyl-S-propylphosphorothioate

Propachlor Oxyfluorfen

Propanil Paraoxon-ethyl

Propargite Profenofos

Simazine Prometryn

Tebuthiuron Propetamphos

Terbufos Sulfotepp

Terbuthylazine Tebupirimphos (Phostebupirim)

Thiobencarb Tebupirimphos oxygen analog

Triallate Tefluthrin

Trifluralin Temephos

Terbufos oxygen analog sulfone

Diazinon-d10 (percent) Terbuthylazine

a-HCH-d6 (percent) Terbutos sulfone

trans-Propiconazole

Tribuphos

Diazinon-d10 (percent)

a-HCH-d6 (percent)

Table 7A 123
Date

(mm/dd/yyyy) Type

Laboratory

set

number

Air 

(m3

)

Particle 

weight 

(g)

Total suspended 

particles 

(μg/m3

)

Benfluralin Carbaryl Chlorpyrifos DCPA (Dacthal) Diazinon

10/05/1999 GFF 99.348 259.9 0.014 54.2

—

— 0.06

— 0.24

Top PUF

—

— 1.48 0.08 3.70

Bottom PUF

—

—

—

—

—

Total

__ __

1.54 0.08 3.94

10/26/1999 GFF 99.348 274.5 0.015 55.7

—

— 0.07

— 0.16

Top PUF 0.06

— 1.52 0.07 4.00

Bottom PUF

—

—

—

—

—

Total 0.06

__

1.59 0.07 4.16

11/16/1999 GFF 99.348 307.6 0.007 21.1

—

—

—

— 0.07

Top PUF

—

— 0.57 0.05 2.04

Bottom PUF

—

—

—

—

—

Total

__ __

0.57 0.05 2.11

12/07/1999 GFF 99.348 289.3 0.011 36.6

—

—

—

—

—

Top PUF

—

— 0.40 0.05 1.11

Bottom PUF

—

—

—

—

—

Total

—

— 0.40 0.05 1.11

01/04/2000 GFF 00.222 393.5 0.016 39.4

— 0.08

—

— 0.09

Top PUF

—

— 0.41

— 0.57

Bottom PUF

—

—

—

—

—

Total

— 0.08 0.41

— 0.66

Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

124  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Date

(mm/dd/yyyy) Type

Laboratory

set

number

Air 

(m3)

Particle 

weight 

(g)

Total suspended 

particles 

(μg/m3)

Benfluralin Carbaryl Chlorpyrifos DCPA (Dacthal) Diazinon

03/28/2000 GFF 00.222 584.5 0.023 38.7 — — — — —

Top PUF — — 0.43 0.05 0.71Bottom PUF — — — — —Total — — 0.43 0.05 0.71

04/25/2000 GFF 00.222 474.4 0.023 48.9 — — — — —

Top PUF — — 0.54 0.04 1.23Bottom PUF — — — — —Total — — 0.54 0.04 1.23

05/23/2000 GFF 00.222 550.4 0.021 38.7 — — — — —

Top PUF — — 0.57 0.04 1.43Bottom PUF — — — — —Total — — 0.57 0.04 1.43

06/20/2000 GFF 00.222 541.5 0.024 44.1 — — — — —

Top PUF — — 0.33 0.02 0.90Bottom PUF — — — — —Total — — 0.33 0.02 0.90

07/18/2000 GFF 00.222 523.7 0.032 61.5 — — — — —

Top PUF — — 0.91 0.05 2.09Bottom PUF — — — — 0.38Total — — 0.91 0.05 2.47

Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Table 7B 125
Date

(mm/dd/yyyy) Type

Laboratory

set

number

Air 

(m3

)

Particle 

weight 

(g)

Total suspended 

particles 

(μg/m3

)

Benfluralin Carbaryl Chlorpyrifos DCPA (Dacthal) Diazinon

08/15/2000 GFF 02.037 504.4 0.029 57.5

—

—

—

—

—

Top PUF

—

—

—

—

—

Bottom PUF

—

—

—

—

—

Total

—

—

—

—

—

10/10/2000 GFF 02.037 316.6 0.024 76.8

—

—

—

—

—

 ruined Top PUF NA NA NA NA NA ruined Bottom PUF NA NA NA NA NA

Total

—

—

—

—

—

11/07/2000 GFF 02.037 329.5 0.007 21.2

—

—

—

— 0.07

 ruined Top PUF NA NA NA NA NA ruined Bottom PUF NA NA NA NA NA

Total

—

—

—

— 10.07

12/05/2000 GFF 02.037 348.8 0.011 31.5

—

— 0.01

— 0.09

Top PUF

—

— 0.38 0.02 0.45

Bottom PUF

—

—

—

—

—

Total

—

— 0.39 0.02 0.54

01/02/2001 GFF 02.037 315.7 0.022 70.3

— 0.05

—

— 0.06

Top PUF

—

—

—

—

—

Bottom PUF

—

—

—

—

—

Total

— 0.05

—

— 0.06

Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

126  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001

1Partial total: Data not available for all filters.
Date

(mm/dd/yyyy) Type

Laboratory

set

number

Air 

(m3)

Particle 

weight 

(g)

Total suspended 

particles 

(μg/m3)

Benfluralin Carbaryl Chlorpyrifos DCPA (Dacthal) Diazinon

01/30/2001 GFF 02.037 360.4 0.014 37.7 — — — — 0.04

Top PUF 0.10 — 0.46 — 1.10Bottom PUF — — — — —Total 0.10 — 0.46 — 1.14

02/27/2001 GFF 02.037 234.1 0.009 39.3 — — — — —

Top PUF 0.10 — 0.21 — 0.63Bottom PUF — — — — —Total 0.10 — 0.21 — 0.63

03/27/2001 GFF 02.037 338.8 0.022 65.5 — 0.03 — — —

Top PUF — — 0.14 0.04 0.23Bottom PUF — — — — —Total — 0.03 0.14 0.04 0.23

06/19/2001 GFF 02.037 287.9 0.012 42.4 — — — — —

Top PUF 0.04 — 0.81 0.03 1.95Bottom PUF — — — — —Total 0.04 — 0.81 0.03 1.95

08/08/2001 GFF 02.037 288.0 0.015 50.7 — — — — 0.04

Top PUF — — 0.30 0.11 1.53Bottom PUF — — — — —Total — — 0.30 0.11 1.57

Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Table 7B 127
Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater 

Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Date

(mm/dd/yyyy) Type

Laboratory

set

number

Air 

(m3

)

Particle 

weight 

(g)

Total suspended 

particles 

(μg/m3

)

Benfluralin Carbaryl Chlorpyrifos DCPA (Dacthal) Diazinon

09/04/2001 GFF 02.037 281.5 0.014 48.3

—

—

—

—

—

Top PUF

—

— 0.28 0.05 1.08

Bottom PUF

—

—

—

—

—

Total

—

— 0.28 0.05 1.08

128  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater 

Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Date

(mm/dd/yyyy) Malathion p,p’-DDE cis-Perme- thrin Tebuthiuron Trifluralin Diazinon-d10 (surrogate) (percent) a-HCH-d6 (surrogate) (percent)

10/05/1999 0.08 — 0.09 — — 70.0 65.0

0.53 0.06 0.07 — 0.07 87.4 69.0

— — — — 0.05 88.2 72.7

0.61 0.06 0.16 — 0.12

10/26/1999 0.08 — 0.11 — — 72.6 67.2

0.50 0.06 0.07 — 0.08 80.6 68.8

— — — — 0.06 94.4 69.0

0.58 0.06 0.18 — 0.14

11/16/1999 — — — — — 58.2 57.2

0.22 0.04 — — 0.05 89.6 62.6

— — — — — 88.4 67.0

0.22 0.04 — — 0.05

12/07/1999 0.07 — — — — 75.6 72.2

0.23 0.05 — — — 83.0 63.0

— — — — — 96.2 56.6

0.30 0.05 — — —

01/04/2000 0.11 — — — — 73.9 69.4

0.18 0.02 — — — 80.4 84.5

— — — — — 98.4 72.5

0.29 0.02 — — —

Table 7B 129
Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater 

Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Date

(mm/dd/yyyy) Malathion p,p’-DDE cis-Perme- thrin Tebuthiuron Trifluralin Diazinon-d10 (surrogate) (percent)

a-HCH-d6

(surrogate)

(percent)

03/28/2000

—

—

—

—

— 74.2 59.1

0.16 0.04

—

— 0.07 74.2 62.0

—

—

—

—

— 77.4 66.8

0.16 0.04

—

— 0.07

04/25/2000

—

—

—

—

— 68.6 67.6

0.42 0.05

—

— 0.07 56.3 56.8

—

—

—

— 0.05 51.9 64..2

0.42 0.05

—

— 0.12

05/23/2000

—

—

—

—

— 73.1 69.7

0.21 0.04

—

— 0.06 65.0 76.7

—

—

—

— 0.04 68.9 68.9

0.21 0.04

—

— 0.10

06/20/2000

—

—

—

—

— 83.4 70.3

0.17 0.02

—

— 0.03 18.7 24.8

—

—

—

— 0.03 79.6 67.5

0.17 0.02

—

— 0.06

07/18/2000

—

—

—

—

— 87.8 66.7

0.55 0.06

—

— 0.04 61.3 71.4

—

—

—

— 0.03 72.4 67.8

0.55 0.06

—

— 0.07

130 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater 

Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Date

(mm/dd/yyyy) Malathion p,p’-DDE cis-Perme- thrin Tebuthiuron Trifluralin Diazinon-d10 (surrogate) (percent) a-HCH-d6 (surrogate) (percent)

08/15/2000 — — — — — 60.0 35.5

— — — — — 97.8 90.0— — — — — 103 88.5— — — — —

10/10/2000 — — — — — 46.5 31.2

NA NA NA NA NA NA NANA NA NA NA NA NA NA— — — — —

11/07/2000 0.03 — — — — 68.0 55.2

NA NA NA NA NA NA NANA NA NA NA NA NA NA

10.03 — — — —

12/05/2000 0.04 — — — — 90.5 79.5

0.04 0.03 — 0.90 0.15 107 90.2

— — — — — 90.0 76.0

0.08 0.03 — 0.09 0.15

01/02/2001 — 0.01 — — — 66.0 51.8

— — — — — NA NA— — — — — NA NA— 0.01 — — —

Table 7B 131

1Partial total: Data not available for all filters.
Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater 

Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Date

(mm/dd/yyyy) Malathion p,p’-DDE cis-Perme- thrin Tebuthiuron Trifluralin Diazinon-d10 (surrogate) (percent)

a-HCH-d6

(surrogate)

(percent)

01/30/2001 0.02

— 0.14

—

— 55.0 42.8

0.12 0.03

—

— 0.80 105 90.0

—

—

—

—

— NA NA

0.14 0.03 0.14

— 0.80

02/27/2001

—

—

—

—

— 67.8 40.0

— 0.06

—

— 0.60 98.3 84.5

—

—

—

—

— 105 84.5

— 0.06

—

— 0.60

03/27/2001

—

—

—

—

— NA NA

0.07 0.05

—

— 0.13 96.2 79.0

—

—

—

—

— 99.0 82.3

0.07 0.05

—

— 0.13

06/19/2001

—

—

—

—

— 59.5 43.0

0.29 0.03

—

— 0.16 104 91.0

—

—

—

— 0.10 104 84.5

0.29 0.03

—

— 0.26

08/08/2001 0.04

—

—

—

— 94.5 75.5

0.24 0.06

—

— 0.11 96.5 80.2

—

—

—

— 0.08 102.5 82.8

0.28 0.06

—

— 0.19

132 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 7B. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater 

Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, EPTC, pebulate, and terbacil were not reported during the time frame of this report; μg/m3, micrograms per cubic meter; E, estimated; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above the reporting level]

Date

(mm/dd/yyyy) Malathion p,p’-DDE cis-Perme- thrin Tebuthiuron Trifluralin Diazinon-d10 (surrogate) (percent) a-HCH-d6 (surrogate) (percent)

09/04/2001 — — — — —

— — 0.28 0.05 1.08— — — — —— — 0.28 0.05 1.08

Table 7B 133
Date

(mm/dd/yyyy) Type

Laboratory 

set 

number

Air 

(m3

)

Particle 

weight 

(g)

Total suspended 

particulate 

(ng/m3

)

1,4-Naphthoquinone 

(estimated)

(64189)

Bifenthrin 

(64247)

Malaoxon 

(64355)

Diazinon-d10 

(surrogate)

(percent)

a-HCH-d6

(surrogate)

(percent)

10/05/1999 GFF 99.348 259.9 0.014 54.2

— 0.11 0.30 51.0 54.0

Top PUF 0.14

—

— 104 76.0

Bottom PUF

—

—

— 91.0 71.0

Total 0.14 0.11 0.30

10/26/1999 GFF 99.348 274.5 0.015 55.7

— 0.05 0.22 63.0 60.0

Top PUF 0.15

—

— 109 73.0

Bottom PUF 0.08

—

— 99.0 77.0

Total 0.22 0.05 0.22

11/16/1999 GFF 99.348 307.6 0.007 21.1

—

—

— 33.0 47.0

Top PUF 0.09

—

— 74.0 70.0

Bottom PUF

—

—

— 86.0 68.0

Total 0.09

—

—

12/07/1999 GFF 99.348 289.3 0.011 36.6

—

—

— 66.0 69.0

Top PUF

—

—

— 26.0 75.0

Bottom PUF

—

—

— 93.0 73.0

Total

—

—

—

01/04/2000 GFF 00.222 393.5 0.016 39.4

—

—

— 95.0 81.0

Top PUF

—

—

— 111 83.0

Bottom PUF

—

—

— 118 85.0

Total

—

—

—

Table 7C. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California.[The site identification number is 324141117001601. Air sampling concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. μg/m3, micrograms per cubic meter; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above laboratory reporting level]

134  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 

7C 135

Date

(mm/dd/yyyy) Type

Laboratory 

set 

number

Air 

(m3)

Particle 

weight 

(g)

Total suspended 

particulate 

(ng/m3)

1,4-Naphthoquinone 

(estimated)

(64189)

Bifenthrin 

(64247)

Malaoxon 

(64355)

Diazinon-d10 

(surrogate)

(percent)

a-HCH-d6

(surrogate)

(percent)

03/28/2000 GFF 00.222 584.5 0.023 38.7 — — 0.10 88.0 78.0

Top PUF — — — 119 86.0Bottom PUF — — — 95.0 75.0Total — — 0.10

04/25/2000 GFF 00.222 474.4 0.023 48.9 — — — 91.0 73.0

Top PUF — — — 79.0 101Bottom PUF — — — 87.0 81.0Total — — —

05/23/2000 GFF 00.222 550.4 0.021 38.7 — — 0.07 91.0 86.0

Top PUF — — — 142 90.0Bottom PUF — — — 135 87.0Total — — 0.07

06/20/2000 GFF 00.222 541.5 0.024 44.1 — — 0.10 105 78.0

Top PUF — — — 47.0 28.0Bottom PUF — — — 100 69.0Total — — 0.10

07/18/2000 GFF 00.222 523.7 0.032 61.5 — — 0.06 103 79.0

Top PUF — — — 98.0 95.0Bottom PUF — — — 105 82.0Total — — 0.06

08/15/2000 GFF 02.037 504.4 0.029 57.5 — — — 60 35.5

Top PUF — — — 97.8 90.0Bottom PUF — — — 103 88.5Total — — —

Table 7C. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Air sampling concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. μg/m3, micrograms per cubic meter; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above laboratory reporting level]
Date

(mm/dd/yyyy) Type

Laboratory 

set 

number

Air 

(m3

)

Particle 

weight 

(g)

Total suspended 

particulate 

(ng/m3

)

1,4-Naphthoquinone 

(estimated)

(64189)

Bifenthrin 

(64247)

Malaoxon 

(64355)

Diazinon-d10 

(surrogate)

(percent)

a-HCH-d6

(surrogate)

(percent)

10/10/2000 GFF 02.037 316.6 0.024 76.8

—

—

— 41.0 30.6

 ruined Top PUF NA NA NA NA NA ruined Bottom PUF NA NA NA NA NA

Total

—

—

—

11/07/2000 GFF 02.037 329.5 0.007 21.2

— 0.05 0.08 67.4 53.4

 ruined Top PUF NA NA NA NA NA ruined Bottom PUF NA NA NA NA NA

Total

— 10.05 10.08

12/05/2000 GFF 02.037 348.8 0.011 31.5

—

— 0.16 74.6 75.7

Top PUF

—

—

— 82.7 82.5

Bottom PUF

—

—

— 91.9 74.6

Total

—

— 0.16

01/02/2001 GFF 02.037 315.7 0.022 70.3

— 0.06 0.14 64.9 45.0

Top PUF NA NA NA NA NABottom PUF NA NA NA NA NATotal NT 10.06 10.14

01/30/2001 GFF 02.037 360.4 0.014 37.7

— 0.07 0.07 56.6 41.8

Top PUF 0.15

—

— 99.3 88.5

Bottom PUF NA NA NA NA NATotal 10.150 10.07 10.07

Table 7C. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Air sampling concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. μg/m3, micrograms per cubic meter; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above laboratory reporting level]

136  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001

1Partial total: Data not available for all filters.
Date

(mm/dd/yyyy) Type

Laboratory 

set 

number

Air 

(m3)

Particle 

weight 

(g)

Total suspended 

particulate 

(ng/m3)

1,4-Naphthoquinone 

(estimated)

(64189)

Bifenthrin 

(64247)

Malaoxon 

(64355)

Diazinon-d10 

(surrogate)

(percent)

a-HCH-d6

(surrogate)

(percent)

02/27/2001 GFF 02.037 234.1 0.009 39.3 — — — 64.8 40.1

Top PUF — — — 98.3 77.4Bottom PUF — — — 90.9 77.3Total — — —

03/27/2001 GFF 02.037 338.8 0.022 65.5 — — 0.08 NA NA

Top PUF — — — 80.3 82.7Bottom PUF — — — 94.0 82.3Total — — 0.08

06/19/2001 GFF 02.037 287.9 0.012 42.4 — 0.06 0.27 60.6 42.5

Top PUF — — — 93.0 81.5Bottom PUF — — — 100.9 81.9Total — 0.06 0.27

08/08/2001 GFF 02.037 288.0 0.015 50.7 — 0.06 0.29 98.9 72.0

Top PUF — — — 71.3 86.7Bottom PUF — — — 93.2 80.8Total — 0.06 0.29

09/04/2001 GFF 02.037 281.5 0.014 48.3 — 0.06 0.33 112.9 83.6

Top PUF — — — 99.1 84.3Bottom PUF 02.037 — — — 97.8 85.4Total — 0.06 0.33

Table 7C. Analytical results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Air sampling concentrations are in nanograms per cubic meter (ng/m3) unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. μg/m3, micrograms per cubic meter; GFF, glass fiber filter; g, gram; NA, not analyzed; PUF, polyurethane foam; —, compound was not detected at a concentration above laboratory reporting level]

Table 7C 137
Site name

Date

(mm/dd/

yyyy)

Time

1,4-

Naphthoquinone

(61611)

1-Naphthol

(49295)

2-(4-tertButylphenoxy)-

cyclohexanol

(61637)

2,5-Dichloroaniline

(61614)

2-AminoN-isopropylbenzamide

(61617)

2-Chloro2,6-diethylacetanilide

(61618)

2-Ethyl-

6-methylaniline

(61620)

[LRL] [0.008] [0.005] [0.02] [0.005] [0.005] [0.008] [0.005]

SWR near pump tower 09/05/2000 1150

—

—

—

—

—

—

—

SWR center of minimum pool 06/12/2000 1250

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR 01/29/2000 0245

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR 01/29/2000 1445

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR 01/30/2000 0200

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR 01/30/2000 1405

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR 03/13/2000 1500

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR 06/12/2000 1630

—

—

—

—

—

—

—

Perdue Treatment Plant—imported raw water at SWR 09/05/2000 1600

—

—

—

—

—

—

—

Sweetwater River below Steele Canyon Bridge at Cottonwood Golf Course 01/29/2000 1000

—

—

—

—

—

—

—

Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in Sweetwater River and Sweetwater Reservoir, San Diego County, California.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

138  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in 

Sweetwater River and Sweetwater Reservoir, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name

3-Trifluoro

methyl

aniline

(61630)

3,4-Dichloroaniline

(61625)

3,5-Dichloroaniline

(61627)

4,4’-Dichlorobenzophenone

(61631)

4-Chloro2-methylphenol

(61633)

4-Chlorophnyl methyl 

sulfone

(61634)

Azinphosmethyl 

oxygen 

analog

(61635)

Bifenthrin

(61580)

Chlorpyrifos oxygen 

analog

(61636)

[LRL] [0.005] [0.008] [0.005] [0.008] [0.005] [0.008] [0.03] [0.005] [0.02]

SWR near pump tower — — — — — — — — —SWR center of minimum pool — E0.006 — — — — — — —Sweetwater River at low-flow diversion above SWR — E0.003 — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — 0.019 — — — — — — —Sweetwater River at low-flow diversion above SWR — E0.003 — — — — — — —Perdue Treatment Plant—imported raw water at SWR — — — — — — — — —Sweetwater River below Steele Canyon Bridge at 

Cottonwood Golf Course

— — — — — — — — —

Table 8  139
Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in 

Sweetwater River and Sweetwater Reservoir, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name Cycloate (04031) Cyfluthrin

(61585)

l-Cyhalothrin

(61595)

Cypermethrin

(61586)

Dichlorvos

(38775)

Dicrotophos

(38454)

Dimethoate

(82662)

E-Dimethomorph

(79844)

Z-Dimethomorph

(79845)

Disulfoton 

sulfone

(61640)

[LRL] [0.02] [0.03] [0.008] [0.03] [0.005] [0.02] [0.005] [0.03] [0.03] [0.005]

SWR near pump tower

—

—

—

—

—

—

—

—

—

—

SWR center of minimum pool

—

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—imported raw water at SWR

—

—

—

—

—

—

—

—

—

—

Sweetwater River below Steele Canyon Bridge at 

Cottonwood Golf Course

—

—

—

—

—

—

—

—

—

—

140 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in 

Sweetwater River and Sweetwater Reservoir, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name

Disulfoton 

sulfoxide

(61641)

a-Endosulfan

(34362)

b-Endosulfan

(34357)

Endosulfan 

ether

(61642)

Endosulfan 

sulfate

(61590)

Ethion

(82346)

Ethion 

monoxon

(61644)

Fenamiphos

(61591)

Fenamiphos 

sulfone

(61645)

[LRL] [0.02] [0.02] [0.02] [0.02] [0.008] [0.005] [0.008] [0.02] [0.008]

SWR near pump tower — — — — — — — — —SWR center of minimum pool — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Perdue Treatment Plant—imported raw water at SWR — — — — — — — — —Sweetwater River below Steele Canyon Bridge at 

Cottonwood Golf Course

— — — — — — — — —

Table 8  141
Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in 

Sweetwater River and Sweetwater Reservoir, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name

Fenamiphos 

sulfoxide

(61646)

Fenthion

(38801)

 Fenthion 

sulfone

(61648)

 Fenthion 

sulfoxide

(61647)

Flumetralin

(61592)

Fonofos 

oxygen 

analog

(61649)

Hexazinone

(04025)

Iprodione

(61593)

Isofenphos

(61594)

[LRL] [0.03] [0.005] [0.008] [0.008] [0.02] [0.02] [0.008] [0.03] [0.008]

SWR near pump tower

—

—

—

—

—

—

—

—

—

SWR center of minimum pool

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—imported raw water at SWR

—

—

—

—

—

—

—

—

—

Sweetwater River below Steele Canyon Bridge at 

Cottonwood Golf Course

—

—

—

—

—

—

—

—

—

142 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in 

Sweetwater River and Sweetwater Reservoir, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name Malaoxon (61652) Metalaxyl (61596) Meth- idathion (61598) Methyl paraoxon (61664) Myclo- butanil (61599) O-Ethyl-O-methyl- S-propylphospho- rothioate (61660) Oxy- fluorfen (61600) Paraoxon- ethyl (61663) Phorate oxygen analog (61666)

[LRL] [0.02] [0.02] [0.008] [0.008] [0.008] [0.005] [0.02] [0.03] [0.03]

SWR near pump tower — — — — — — — — —SWR center of minimum pool — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low-flow diversion above SWR — — — — — — — — —Sweetwater River at low—flow diversion above 

SWR

— — — — — — — — —

Perdue Treatment Plant-imported raw water at SWR — — — — — — — — —Sweetwater River below Steele Canyon Bridge at 

Cottonwood Golf Course

— — — — — — — — —

Table 8  143
Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in 

Sweetwater River and Sweetwater Reservoir, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name Phosmet

(61601)

Phosmet

oxon

(61668)

Profenofos

(61603)

Prometryn

(04036)

Propetamphos

(61604)

cis-Propiconazole

(79846)

transPropiconazole

(79847)

Sulfotepp

(61605)

Sulprofos

(38716)

[LRL] [0.008] [0.02] [0.008] [0.005] [0.02] [0.005] [0.005] [0.005] [0.005]SWR near pump tower

—

—

—

—

—

—

—

—

—

SWR center of minimum pool

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Sweetwater River at low-flow diversion above SWR

—

—

—

—

—

—

—

—

—

Perdue Treatment Plant—imported raw water at SWR

—

—

—

—

—

—

—

—

—

Sweetwater River below Steele Canyon Bridge at 

Cottonwood Golf Course

—

—

—

—

—

—

—

—

—

144  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 8. Analytical results for first special study—pesticide compounds in filtered water using U.S. Geological Survey National Water Quality Laboratory Schedule 2002—in 

Sweetwater River and Sweetwater Reservoir, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. LRL, laboratory reporting level; E, estimated value; (percent), percent recovery; mm/dd/yyyy, month, day, year; SWR, Sweetwater Reservoir: all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name

Tebupirimphos oxygen 

analog

(61669)

Tefluthrin

(61606)

Temephos

(61607)

Tebupirimphos

(61602)

Terbufos 

oxygen 

analog 

sulfone

(61674)

Terbuthylazine

(04022)

Tribufos

(61610)

Diazinon-d10

(surrogate)

(99223) 

(percent)

a-HCH-d6

(surrogate)

(99224) 

(percent)

[LRL] [0.02] [0.008] [0.03] [0.008] [0.02] (0.008) [0.02]

SWR near pump tower — — — — — — — 83.0 81.2SWR center of minimum pool — — — — — — — 107 97.4Sweetwater River at low-flow diversion dam above SWR — — — — — — — 103 83.8Sweetwater River at low-flow diversion dam above SWR — — — — — — — 138 114Sweetwater River at low-flow diversion dam above SWR — — — — — — — 178 138Sweetwater River at low-flow diversion dam above SWR — — — — — — — 138 108Sweetwater River at low-flow diversion dam above SWR — — — — — — — 99.2 89.3Sweetwater River at low-flow diversion dam above SWR — — — — — — — 96.2 92.2Perdue Treatment Plant—imported raw water at SWR — — — — — — — 85.4 108Sweetwater River below Steele Canyon Bridge at 

Cottonwood Golf Course

— — — — — — — 246 117

Table 8  145
Station name: SWR near pump tower

(30-day SPMD sample)

SWR near pump tower

(60-day SPMD sample)

SWR near pump tower

(trip blank)

SWR near pump tower

(60-day processing blank)

Begin date (mm/dd/yyyy): 01/25/2001 01/25/2001 01/25/2001 01/25/2001

Begin time: 1000 1000 1005 1010

End date (mm/dd/yyyy): 02/22/2001 03/21/2001 03/21/2001 03/21/2001

End time: 1000 1600 1605 1610

Analyte μg/kg μg/kg μg/kg μg/kg

a-HCH <5.0 <5.0 <5.0 <5.0

Hexachlorobenzene <5.0 <5.0 <5.0 <5.0

Pentachloroanisole <5.0 <5.0 <5.0 <5.0

b-HCH <5.0 <5.0 <5.0 <5.0

g-HCH (Lindane) <5.0 <5.0 <5.0 <5.0

d-HCH <5.0 <5.0 <5.0 <5.0

Heptachlor <5.0 <5.0 <5.0 <5.0

Aldrin <5.0 <5.0 <5.0 <5.0

DPCA (Dacthal) <5.0 <5.0 <5.0 <5.0

Oxychlordane <5.0 <5.0 <5.0 <5.0

trans-Chlorodane E2.2 E3.7 E3.0 <5.0

o,p-DDE <5.0 <5.0 <5.0 <5.0

cis-Chlordane E2.5 E4.2 E2.6 <5.0

trans-Nonachlor E1.7 E1.0 E1.0 <5.0

Dieldrin <5.0 <5.0 <5.0 <5.0

p,p-DDE <5.0 E2.9 <5.0 <5.0

o,p-DDD <5.0 <5.0 <5.0 <5.0

Endrin <5.0 <5.0 <5.0 <5.0

cis-Nonachlor <5.0 <5.0 <5.0 <5.0

p,p-DDD <5.0 <5.0 <5.0 <5.0

o,p-DDT <5.0 <5.0 <5.0 <5.0

p,p-DDT <5.0 <5.0 <5.0 <5.0

o,p-Methoxychlor <5.0 <5.0 <5.0 <5.0

p,p-Methoxychlor <5.0 <5.0 <5.0 <5.0

Mirex <5.0 <5.0 <5.0 <5.0

Toxaphene <200 <200 <200 <200

PCBs-Total <50 <50 <50 <50

SPMD weight (kg) 13.497 8.998 8.998 8.998

Table 9A. Analytical results for second special study—pesticides in semipermeable membrane device (SPMD) samples—for the 

Sweetwater Reservoir, San Diego County, California. 

[Time is denoted in 24-hour scale. SWR, Sweetwater Reservoir; E, estimated value; kg, kilogram; mg/kg, microgram per kilogram; mm/dd/yyyy, month/day/ year; 

<, compound was not detected at a concentration above the laboratory reporting level]

146  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Station name Lab spike Lab blank

SWR near 

pump tower

(30-day SPMD 

sample)

SWR near

pump tower

(60-day SPMD 

sample)

SWR near 

pump tower

(trip blank)

SWR near

 pump tower

(60-day 

processing 

blank)

Begin date (mm/dd/yyyy): 08/27/2001 08/27/2001 01/25/2001 01/25/2001 01/25/2001 01/25/2001

Begin time: 1000 1000 1005 1010

End date (mm/dd/yyyy): 02/22/2001 03/21/2001 03/21/2001 03/21/2001

End time: 1000 1600 1605 1610

Compounds Percent

 recovered μg/kg μg/kg μg/kg μg/kg μg/kg

Phenol 46.3 <50 E21.7 E23.9 E20.2 E36.6

Bis(-2-chloroethyl) ether 48.3 <50 <100 <100 <100 <100

2-Chlorophenol 50.5 <50 <100 <100 <100 <100

1,3-Dichlorobenzene 54.7 <50 <100 <100 <100 <100

1,4-Dichlorobenzene 45.8 <50 <100 <100 <100 <100

1,2-Dichlorobenzene 51.0 <50 <100 <100 <100 <100

Bis(2-chloroisopropyl) ether 50.7 <50 <100 <100 <100 <100

Hexachloroethane 51.5 <50 <100 <100 <100 <100

N-Nitrosodi-n-propylamine 56.8 <50 <100 <100 <100 <100

p-Cresol 57.3 <50 <100 <100 <100 <100

Nitrobenzene 49.3 <50 <100 <100 <100 <100

Isophorone 57.3 <50 <100 <100 <100 <100

2-Nitrophenol 52.5 <50 <100 <100 <100 <100

C8-alkyl-phenol 55.7 <50 <100 <100 <100 <100

Bis(-2-chloroethoxy)methane 59.0 <50 <100 <100 <100 <100

2,4-Dichlorophenol 64.3 <50 <100 <100 <100 <100

3,5-Dimethylphenol 58.7 <50 <100 <100 E3.01 <100

1,2,4-Trichlorobenzene 51.3 <50 <100 <100 <100 <100

Naphthalene 63.0 <50 E3.8 E5.0 E6.13 <100

2,4,6-Trimethyphenol 29.5 <50 <100 <100 <100 <100

Hexachlorobutadiene 63.0 <50 <100 <100 <100 <100

Quinoline 77.2 <50 <100 <100 <100 <100

Isoquinoline 75.3 <50 <100 <100 <100 <100

4-Chloro-3-methylphenol 89.8 <50 <100 <100 E16.3 <100

Hexachlorocyclopentadiene 48.3 <50 <100 <100 <100 <100

2,4,6-Trichlorophenol 83.3 <50 <100 <100 <100 <100

2-Chloronaphthalene 74.2 <50 <100 <100 <100 <100

2-Ethylnaphthalene 74.3 <50 <100 <100 <100 <100

2,6-Dimethylnaphthalene 73.5 <50 <100 <100 <100 <100

1,6-Dimethylnaphthalene 77.8 <50 <100 <100 <100 <100

Acenaphthylene 75.3 <50 <100 <100 <100 <100

Table 9B. Analytical results for second special study—polycyclic aromatic hydrocarbons and other semivolatile organic compounds 

in semipermeable membrane device (SPMD) samples—for the Sweetwater Reservoir, San Diego County, California.

[Time is denoted in 24-hour scale. E, estimated value; ID, identification; SWR, Sweetwater Reservoir; mm/dd/yyyy, month/day/year; mg/kg, microgram per 

kilogram; <, compound was not detected at a concentration above the laboratory reporting level]

Table 9B 147
Station name Lab spike Lab blank

SWR near 

pump tower

(30-day SPMD 

sample)

SWR near

pump tower

(60-day SPMD 

sample)

SWR near 

pump tower

(trip blank)

SWR near

 pump tower

(60-day 

processing 

blank)

Begin date (mm/dd/yyyy): 08/27/2001 08/27/2001 01/25/2001 01/25/2001 01/25/2001 01/25/2001

Begin time: 1000 1000 1005 1010

End date (mm/dd/yyyy): 02/22/2001 03/21/2001 03/21/2001 03/21/2001

End time: 1000 1600 1605 1610

Compounds Percent

 recovered μg/kg μg/kg μg/kg μg/kg μg/kg

1,2-Dimethylnaphthalene 78.5 <50 <100 <100 <100 <100

Dimethylphthalate 87.3 <50 <100 <100 <100 <100

2,6-Dinitrotoluene 88.0 <50 <100 <100 <100 <100

Acenaphthene 78.7 <50 <100 <100 <100 <100

4-Nitrophenol 86.5 <50 <100 <100 <100 <100

2,4-Dinitrotol 84.7 <50 <100 <100 <100 <100

2,4-Dinitrophenol 69.3 <50 <100 <100 <100 <100

2,3,6-Trimethylnaphthalene 83.8 <50 <100 <100 <100 <100

9H-Fluorene 83.2 <50 <100 <100 <100 <100

4-Chlorophenyl phenyl ether 82.2 <50 <100 <100 <100 <100

Diethylphthalate 87.2 <50 <100 <100 <100 <100

N-Nitrosodiphenylamine 88.3 <50 <100 <100 <100 <100

Azo-benzene 84.3 <50 <100 <100 <100 <100

4-Bromophenylphenylether 85.0 <50 <100 <100 <100 <100

1-Methyl-9H-fluorene 86.3 <50 <100 <100 <100 <100

Hexachlorobenzene 87.5 <50 <100 <100 <100 <100

Pentachloroaniline 86.7 <50 <100 <100 <100 <100

Dibenzothiophenate 87.3 <50 <100 <100 <100 <100

Pentachlorophenol 85.5 <50 <100 <100 <100 <100

Pentachloronitrophenol 88.7 <50 <100 <100 <100 <100

Phenanthrene 90.7 <50 E12.2 E7.5 <100 <100

Anthracene 88.0 <50 <100 <100 <100 <100

Acridine 88.7 <50 <100 <100 <100 <100

Phenanthridine 87.8 <50 <100 <100 <100 <100

9H-Carbazol 88.5 <50 <100 <100 <100 <100

2-Methylanthracene 87.0 <50 <100 <100 <100 <100

Benzo(c) quinoline 87.5 <50 <100 <100 <100 <100

4,5-Methylenephenanthrene 86.7 <50 <100 <100 <100 <100

1-Methylphenanthrene 86.3 <50 <100 <100 <100 <100

Di-n-butyl phthalate 87.8 <50 E22.7 E10.2 E15.1 E3.1

Anthraquinone 88.3 <50 <100 <100 <100 <100

Table 9B. Analytical results for second special study—polycyclic aromatic hydrocarbons and other semivolatile organic compounds 

in semipermeable membrane device (SPMD) samples—for the Sweetwater Reservoir, San Diego County, California—Continued.

[Time is denoted in 24-hour scale. E, estimated value; ID, identification; SWR, Sweetwater Reservoir; mm/dd/yyyy, month/day/year; mg/kg, microgram per 

kilogram; <, compound was not detected at a concentration above the laboratory reporting level]

148  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 9B. Analytical results for second special study—polycyclic aromatic hydrocarbons and other semivolatile organic compounds 

in semipermeable membrane device (SPMD) samples—for the Sweetwater Reservoir, San Diego County, California—Continued.

[Time is denoted in 24-hour scale. E, estimated value; ID, identification; SWR, Sweetwater Reservoir; mm/dd/yyyy, month/day/year; μg/kg, microgram per 

kilogram; <, compound was not detected at a concentration above the laboratory reporting level]

Station name Lab spike Lab blank

SWR near 

pump tower

(30-day SPMD 

sample)

SWR near

pump tower

(60-day SPMD 

sample)

SWR near 

pump tower

(trip blank)

SWR near

 pump tower

(60-day 

processing 

blank)

Begin date (mm/dd/yyyy): 08/27/2001 08/27/2001 01/25/2001 01/25/2001 01/25/2001 01/25/2001

Begin time: 1000 1000 1005 1010

End date (mm/dd/yyyy): 02/22/2001 03/21/2001 03/21/2001 03/21/2001

End time: 1000 1600 1605 1610

Compounds Percent

 recovered μg/kg μg/kg μg/kg μg/kg μg/kg

Fluoranthene 88.7 <50 E6.1 E7.9 <100 <100

Pyrene 88.3 <50 E3.4 E2.4 <100 <100

1-Methylpyrene 88.0 <50 <100 <100 <100 <100

Butylbenzyl-phthalate 88.3 <50 <100 <100 <100 <100

Benzo(a)anthracene 91.5 <50 <100 <100 <100 <100

Chrysene 95.5 <50 <100 <100 <100 <100

Bis(2-ethylhexyl)phthalate 92.0 <50 E48.9 E27.1 E34.0 E25.8

2,2-Biquinoline 93.3 <50 <100 <100 <100 <100

Di-n-octyl phthalate 94.2 <50 <100 <100 <100 <100

Benzo(b)fluoranthene 97.7 <50 <100 <100 <100 <100

Benzo(k)fluoranthene 92.0 <50 <100 <100 <100 <100

Benzo(a)pyrene 95.7 <50 <100 <100 <100 <100

Indeno(1,2,3-c)pyrene 92.7 <50 <100 <100 <100 <100

Dibenz(a,h)anthracene 89.5 <50 <100 <100 <100 <100

Benzo(g,h,i)perylene 59.9 <50 <100 <100 <100 <100

Table 9B 149
Station name Date Time

Copper

(μg/L)

(01040)

Perdue Treatment Plant-finished water at Sweetwater Reservoir April 26, 2001 1110 2.8

Perdue Treatment Plant-finished water at Sweetwater Reservoir July 24, 2001 1120 2.3

Perdue Treatment Plant-imported raw water at Sweetwater Reservoir April 26, 2001 1130 4.1

Reynolds Desalination Facility−discharge, 21-hour composite April 25, 2001 2100 <1.3

Reynolds Desalination Facility−discharge July 24, 2001 1010 E1.1

Reynolds Desalination Facility−effluent July 24, 2001 1020 <1

Reynolds Desalination Facility−feed July 24, 2001 1030 3.7

Reynolds Desalination Facility−inflow July 24, 2001 1040 <1

17S/2W-27N2 July 24, 2001 1050 <1

17S/2W-27P1 July 24, 2001 0930 1.9

17S/2W-27P2 July 24, 2001 0950 <1

17S/2W-28R1 July 24, 2001 1100 1.6

17S/2W-34C1 July 24, 2001 1000 <1

Table 10. Analytical results for third special study—dissolved copper—at the Perdue Treatment Plant, the Reynolds Desalination 

Facility, and Sweetwater Wells, San Diego County, California.

[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s 

computerized data system (National Water Information System) to uniquely identify a specific constituent or property. E, estimated value; mg/L, microgram per 

liter; <, compound was not detected at a concentration above the laboratory reporting level]

150 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 11. Analytical results of fourth special study—volatile organic compounds in whole water—using U.S. Geological Survey National Water Quality Laboratory Schedule 

2020 for selected National City wells, San Diego County, California.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L) unless noted; E, estimated value; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time 1,1,1,2-Tetra- chloroethane (77562) 1,1,1-Trichloro- ethane (34506) 1,1,2,2-Tetra- chloroethane (34516) 1,1,2-Tri- chlorotri- fluoroethane (77658) 1,1,2-Trichlo- roethane (34511) 1,1-Dichloro- ethane (34496) 1,1-Dichloro- ethylene (34501) 1,1-Dichloro- propene (77168)

[LRL] [0.03] [0.03] [0.09] [0.06] [0.06] [0.07] [0.04] [0.03]

17S/2W-16Q3 04/20/2000 1200 — — — — — — — —17S/2W-16Q4 04/20/2000 1210 — — — — — — — —

Site name

1,2,3,4-Tetramethylbenzene

(49999)

1,2,3,5-Tetramethylbezene 

(50000)

1,2,3-Trichlorobenzene

(77613)

1,2,3-Trichloropropane

(77443) 

 1,2,3-Trimethylbenzene

(77221) 

 1,2,4-Trichlorobenzene

(34551)

1,2,4-Trimethylbenzene

(77222)

1,2-Dibromo-3-

chloropropane

(82625) 

1,2-Dibromoethane

(77651) 

1,2-Dichlorobenzene

(34536)

[LRL] [0.2] [0.2] [0.3] [0.16] [0.1] [0.2] [0.06] [0.2] [0.04] [0.05]

17S/2W-16Q3 — — — — — — — — — —17S/2W-16Q4 — — — — — — — — — —

Site name

1,2-Dichloroethane

(32103) 

1,2-Dichloropropane

(34541) 

1,3,5-Trimethylbenzene

(77226)

1,3-Dichlorobenzene

(34566)

1,3-Dichloropropane

(77173)

1,4-Dichlorobenzene

(34571)

2,2-Dichloropropane

(77170) 

2-Chloro

toluene

(77275)

o-Ethyl 

toluene

(77220)

3-Chloropropene

(78109)

[LRL] [0.1] [0.07] [0.04] [0.05] [0.1] [0.05] [0.05] [0.04] [0.06] [0.2]

17S/2W-16Q3 — — — — — — — — — —17S/2W-16Q4 — — — — — — — — — —

Table 11 151
Table 11. Analytical results of fourth special study—volatile organic compounds in whole water—using U.S. Geological Survey National Water Quality Laboratory Schedule 

2020 for selected National City wells, San Diego County, California.—Continued[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L) unless noted; E, estimated value; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Site name

4-Chlorotoluene

(77277)

4-Isopropyl-1-

methylbenzene

(isopropyltoluene)

(77356)

Acetone

(81552)

Acrylonitrile

(34215) 

Benzene

(34030)

Bromobenzene

(81555)

Bromochloromethane

(77297)

Bromodichloromethane

(32101)

Bromoethene

(50002) 

Bromomethane

(34413) 

[LRL] [0.06] [0.07] [7] [1] [0.04] [0.04] [0.04] [0.05] [0.1] [0.3]

17S/2W-16Q3

—

—

—

—

—

—

—

—

—

—

17S/2W-16Q4

—

—

—

—

—

—

—

—

—

—

Site name

Carbon 

disulfide

(77041)

Chlorobenzene

(34301)

Chloroethane

(34311)

Chloromethane

(34418)

cis-1,2-

Dichloroethylene

(77093)

cis-1,3-

Dichloropropene 

(34704)

Dibromochloromethane

(32105)

Dibromomethane

(30217) 

Dichlorodifluoromethane

(34668)

Dichloromethane

(34423)

[LRL] [0.07] [0.03] [0.1] [0.5] [0.04] [0.09] [0.2] [0.05] [0.27] [0.4]

17S/2W-16Q3

—

—

—

—

—

—

—

—

—

—

17S/2W-16Q4

—

—

—

—

—

—

—

—

—

—

Site name

Diethyl

ether

(81576)

Diisopropyl 

ether

(81577)

Ethyl methacrylate

(73570)

2-Butanone

(81595)

Ethylbenzene

(34371)

Hexachlorobutadiene 

(39702)

Hexachloroethane

(34396) 

Methyl

iodide

(77424) 

4-Methyl-2-

pentanone

(78133) 

Isopropylbenzene

(77223) 

[LRL] [0.2] [0.1] [0.2] [1.6] [0.03] [0.1] [0.2] [0.12] [0.4] [0.03]

17S/2W-16Q3

—

—

—

—

—

—

—

—

—

—

17S/2W-16Q4

—

—

—

—

—

—

—

—

—

—

152 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 11. Analytical results of fourth special study—volatile organic compounds in whole water—using U.S. Geological Survey National Water Quality Laboratory Schedule 

2020 for selected National City wells, San Diego County, California.—Continued[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L) unless noted; E, estimated value; LRL, laboratory reporting level; mm/dd/yyyy, month/day/year; —, compound was not detected at a concentration above laboratory reporting level]

Site name

Methyl 

acrylonitrile 

(81593)

Methyl 

acrylate

(49991) 

Methyl methacrylate

(81597)

tert-Pentyl 

methyl ether

(50005)

m- and pXylene

(85795)

Naphthalene

(34696) 

2-Hexanone

(77103)

n-Butylbenzene

(77342)

n-Propylbenzene

(77224)

o-Xylene

(77135)

[LRL] [0.6] [1.4] [0.3] [0.11] [0.06] [0.2] [0.7] [0.2] [0.04] [0.04]

17S/2W-16Q3 — — — — — — — — — —17S/2W-16Q4 — — — — — — — — — —

Site name

secButylbenzene

(77350)

Styrene

(77128)

Ethyl

tert-butyl 

ether

(50004)

Methyl tertbutyl ether

(MTBE)

(78032)

tertButylbenzene

(77353) 

Tetrachloroethene

(34475)

Tetrachloromethane

(32102)

Tetrahydrofuran

(81607) 

Toluene

(34010)

trans-1,2-

Dichloroethene

(34546) 

[LRL] [0.03] [0.04] [0.05] [0.2] [0.06] [0.1] [0.06] [2] [0.05] [0.03]

17S/2W-16Q3 — — — — — — — — — —17S/2W-16Q4 — — — — — — — — — —

Site name

trans-1,3-

Dichloropropene 

(34699)

trans-1,4-

Dichloro-2-

butene

(73547)

Bromoform

(32104)

Trichloroethene

(39180)

Trichlorofluoromethane

(34488) 

Chloroform

(32106)

Vinyl 

chloride

(39175)

1,4-Bromofluorobenzene 

(surrogate) 

(percent) 

(99834)

1,2-Dichloroethane-d4

(surrogate) 

(percent)

(99832)

Toluene-d8

(surrogate) 

(percent) 

(99833)

[LRL] [0.09] [0.7] [0.06] [0.04] [0.09] [0.05] [0.1]

17S/2W-16Q3 — — — E 0.03 — E 0.04 — 71.5 97.3 94.1

17S/2W-16Q4 — — — — — — — 69.7 97.7 92.6

Table 11 153
Site name Date (mm/dd/yyyy) Time Aluminum (01106) Antimony (01095) Arsenic (01000) Barium (01005) Beryllium (01010) Boron (01020) Cadmium (01025) Chromium (01030) Cobalt (01035) Copper (01040) 

[LRL] [1.6] [0.2] [0.2] [0.2] [0.06] [8] [0.04] [0.8] [0.014] [0.4]

Sweetwater 

Reservoir near pump tower

03/20/2001 1240 2 0.19 0.7 49

 105 0.05

 0.171 2.3

Sweetwater River 

at low-flow diversion dam above Sweetwater Reservoir

03/20/2001 1600 2 0.11 0.7 83

 200 0.04

 0.566 2.4

Site name Lead 

(01049)

Lithium 

(01130)

Manganese

(01056) 

Molybdenum

(01060) 

Nickel 

(01065)

Selenium 

(01145)

Silver 

(01075)

Strontium 

(01080)

Thallium 

(01057)

Uranium 

(22703)

Vanadium

(01085) 

Zinc 

(01090)

[LRL] [0.08] [0.6] [0.2] [0.4] [0.06] [0.4] [1] [0.4] [0.04] [0.04] [0.14] [0.6]

Sweetwater 

Reservoir near pump tower

0.08 15.2 1.9 4.3 0.21 1  477

 3.44 3.9 1.2

Sweetwater River 

at low-flow diversion dam above Sweetwater Reservoir

E0.07 6.3 245 10

 0.9

 733 0.13 17.3 4.4 2.5

Table 12. Analytical results for fifth special study—dissolved trace metals in filtered water—for the Sweetwater Reservoir, San Diego County, California.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property; LRL, laboratory reporting level; E, estimated value. All values are reported as micrograms per liter (mg/L). mm/dd/yyyy, month/day/year; 

, compound was not detected at a concentration above the laboratory reporting level]

154  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 13. Analytical results for sixth (last) special study—selected wastewater compounds in whole water—for the Sweetwater and Loveland Reservoirs, San Diego County, 

California.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Where two laboratory reporting levels (LRL) are shown, the first was used Oct. 2000–February 2001, the 2nd, March–Sept. 2001. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; E, estimated value; NA, not analyzed; all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time

1-Methylnaphthalene

(81696)

1,4-Dichlorobenzene

(34571)

Bis(2-ethylhexyl)

adipate

(77903)

Bis(2-ethylhexyl) 

phthalate 

(39100)

2-Methylnaphthalene

(30194)

2,6-Ditertbutylphenol 2,6-Di- tert-p- Benzoqui- none 2,6-Di- methyl- naphtha- lenene (62805)

[LRL] [0.500] [0.040, 0.500] [2.000] [2.500] [0.500] [0.150] [0.500] [0.500]

Sweetwater Reservoir near pump tower 12/04/2000 1220 NA — — — NA — — —Perdue Treatment Plant—finished water at 

SWR

12/04/2000 1510 NA — — — NA — — —

Perdue Treatment Plant—imported raw water 

at SWR

03/20/2001 1500 — — NA NA — NA NA NA

Loveland Reservoir near dam 03/21/2001 1130 — — NA NA — NA NA NA

Site name

3-bCoprostanol

(62806)

3-Methyl-1

(H)-indole

(Skatole)

(62807)

3-tertButyl-4-

hydroxyanisole 

(BHA)

(61702)

4-nOctylphenol

(62809)

4-tert--

Octylphenol

(62810)

5-Methyl1H-benzotriazole

(61944)

Acetophenone

(62811)

Acetylhexamethyl 

tetrahydronaphthalene

(62812)

Anthracene

(34220)

Benzophenone

(62814)

[LRL] [0.600, 2.000] [1.000] [0.120, 5.000] [1.000] [1.000] [0.150, 2.000] [0.220, 0.500] [0.500] [0.060, 0.500] [0.500]

Sweetwater Reservoir near pump tower — NA — NA NA — — NA — NAPerdue Treatment Plant—finished water at 

SWR

— NA — NA NA — — NA — NA

Perdue Treatment Plant—imported raw water 

at SWR

— — — — — — — — — —

Loveland Reservoir near dam — — — — — — — — — —

Table 13  155
Table 13. Analytical results for sixth (last) special study—selected wastewater compounds in whole water—for the Sweetwater and Loveland Reservoirs, San Diego County, 

California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Where two laboratory reporting levels (LRL) are shown, the first was used Oct. 2000–February 2001, the 2nd, March–Sept. 2001. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; E, estimated value; NA, not analyzed; all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name

Benzo(a)-

pyrene

(34247)

ß-Stigmastanol

(62815)

Bisphenol A

(62816)

Bromacil

(30234)

Butylatedhydroxytoluene 

(BHT)

Caffeine

(81436)

Camphor

(62817)

Carbaryl

(39750)

[LRL] [0.070, 0.500] [2.00] [0.090, 1.000] [0.500] [0.110] [0.080, 0.500] [0.500] [0.060, 1.000]

Sweetwater Reservoir near pump tower

—

— E0.064 NA

— E0.041 NA

—

Perdue Treatment Plant—finished water at SWR

—

—

— NA

—

— NA

—

Perdue Treatment Plant—imported raw water at 

SWR

—

—

— E0.047 NA

—

—

—

Loveland Reservoir near dam

—

—

—

— NA

—

—

—

Site name Carbazole

(77571)

cisChlordane Chlorpyrifos

(38932)

Cholesterol

(62818)

Codeine Cotinine

(61945)

Diazinon

(39570)

Dichlorvos

(30218)

[LRL] [0.500] [0.040] [0.020, 0.500] [1.500, 2.000] [0.200] [0.080, 1.000] [0.030, 0.500] [1.000]

Sweetwater Reservoir near pump tower NA E0.012

— E1.210

—

—

— NA

Perdue Treatment Plant—finished water at SWR NA

—

—

—

—

—

— NA

Perdue Treatment Plant—imported raw water at 

SWR

— NA

—

— NA

—

—

—

Loveland Reservoir near dam

— NA

— E0.600 NA

—

—

—

156  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 13. Analytical results for sixth (last) special study—selected wastewater compounds in whole water—for the Sweetwater and Loveland Reservoirs, San Diego County, 

California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Where two laboratory reporting levels (LRL) are shown, the first was used Oct. 2000–February 2001, the 2nd, March–Sept. 2001. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; E, estimated value; NA, not analyzed; all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name Dieldrin Diethyl- phthalate

(34336)

Fluoranthene

(34376)

Hexahydrohexamethylcyclopentabenzopyran

(62823)

Indole

(62824)

Isoborneol

(62825)

Isopropylbenzene

(Cumene)

(77223)

Isophorone

(34408)

[LRL] [0.080] [0.350] [0.030, 0.500] [0.500] [0.500] [0.500] [0.500] [0.500]

Sweetwater Reservoir near pump tower E0.008 — — NA NA NA NA —Perdue Treatment Plant—finished water at SWR — — 0.031 NA NA NA NA —Perdue Treatment Plant—imported raw water at SWR NA NA — — — — — NALoveland Reservoir near dam NA NA — — — — — NA

Site name Isoquinoline (62826) d-Limonene (62819) Lindane Menthol (62827) Methyl parathion Methyl salicylate (62828) N,N-Diethyl- m-toluamide (DEET) (61947) Metolachlor (82612) Naph- thalene (34696)

[LRL] [0.500] [0.500] [0.050] [0.500] [0.060] [0.500] [0.080, 0.500] [0.500] [0.025, 0.500]

Sweetwater Reservoir near pump tower NA — — NA — NA — — —Perdue Treatment Plant—finished water at 

SWR

NA — — NA — NA — — —

Perdue Treatment Plant—imported raw water 

at SWR

— NA NA — NA — — — —

Loveland Reservoir near dam — NA NA — NA — — — —

Table 13  157
Table 13. Analytical results for sixth (last) special study—selected wastewater compounds in whole water—ifor the Sweetwater and Loveland Reservoirs, San Diego County, 

California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Where two laboratory reporting levels (LRL) are shown, the first was used Oct. 2000–February 2001, the 2nd, March–Sept. 2001. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; E, estimated value; NA, not analyzed; all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name

4-Nonylphenol

diethoxylates

(NPEO2)

(61703)

Nonylphenol 

monoethoxylates 

(NPEO1)

(61704)

4-Octyphenoldiethoxylates

(OPEO2)

(61705)

4-Octylphenol 

monoethoxylates 

(OPEO1)

(61706)

p-Cresol

(77146)

4-Nonylphenol 

(total)

(62829)

Pentachlorophenol

(39032)

Phenanthrene

(34461)

[LRL] [1.100, 5.000] [1.000] [0.200, 1.000] [0.120, 1.000] [0.060, 1.000] [0.700, 5.000] [2.000] [0.050, 0.500]

Sweetwater Reservoir near pump tower

—

—

— E0.132 0.127 E0.226 NA

—

Perdue Treatment Plant—finished water at 

SWR

—

—

— E0.154

— E0.294 NA

—

Perdue Treatment Plant—imported raw water 

at SWR

— NA

—

—

—

—

—

—

Loveland Reservoir near dam

— NA

—

—

—

—

—

—

Site name Phenol

(34694)

Phthalic 

anhydride

Prometon

(39056)

Pyrene

(34469)

Tributyl 

phosphate

(62832)

Triclosan

(61708)

Triethylcitrate

(ethyl citrate)

(62833)

Triphenyl 

phosphate

(62834)

[LRL] [0.450, 0.500] [0.350] [0.050] [0.030, 0.500] [0.050] [0.050, 1.000] [0.500] [0.100, 0.500]

Sweetwater Reservoir near pump tower E1.345

— NA E0.029 NA E0.038 NA

—

Perdue Treatment Plant—finished water at SWR

—

— NA

— NA E0.034 NA

—

Perdue Treatment Plant—imported raw water at 

SWR

E0.560 NA

—

—

—

—

—

—

Loveland Reservoir near dam E0.310 NA

—

—

—

—

—

—

158  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 13. Analytical results for sixth (last) special study—selected wastewater compounds in whole water—for the Sweetwater and Loveland Reservoirs, San Diego County, 

California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Where two laboratory reporting levels (LRL) are shown, the first was used Oct. 2000–February 2001, the 2nd, March–Sept. 2001. mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; E, estimated value; NA, not analyzed; all values are reported as micrograms per liter (mg/L) unless noted; —, compound was not detected at a concentration above laboratory reporting level]

Site name

Tris(2-butoxyethyl) 

phosphate

(62830)

Tris(2-chloro

ethyl)

phosphate

(62831)

Tris(dichloroisopropyl) 

phosphate

(61707)

4-n-Nonyl

phenol 

(surrogate) 

(percent)

BHT-d9 

(surrogate) 

(percent)

Decafluorobiphenyl 

(surrogate) 

(percent)

CaffieneC-13

(surrogate) 

(percent)

Fluoranthene-d10 

(surrogate) 

(percent) 

Bisphenol 

A-d3

(surrogate) 

(percent)

[LRL] [0.500] [0.040, 0.500] [0.100, 0.500]

Sweetwater Reservoir near pump tower NA 0.067 — 67 66 NA NA NA NAPerdue Treatment Plant—finished water at 

SWR

NA E0.033 — 62 45 NA NA NA NA

Perdue Treatment Plant—imported raw water 

at SWR

— — — NA NA 38 79 81 68

Loveland Reservoir near dam — — — NA NA 44 83 82 81

Table 13  159
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name Date (mm/dd/yyyy) Time Sample type 1,1,1,2-Tetra- chloroethane

(77562)

1,1,1-Trichloroethane

(34506)

1,1,2,2-Tetrachloroethane

(34516)

1,1,2-Trichlorotrifluoroethane

(77652)

1,1,2-Trichloroethane

(34511)

Sweetwater Reservoir near pump tower 03/20/2001 1241 Replicate <0.03 <0.03 <0.09 <0.06 <0.06Sweetwater Reservoir center of minimum 

pool

11/29/1999 1331 Replicate <0.03 <0.03 <0.09 <0.06 <0.06

Sweetwater Reservoir east end reservoir fill 

boundary

06/12/2000 1329 Source-solution blank <0.03 <0.03 <0.09 <0.06 <0.06

Sweetwater Reservoir east end reservoir fill 

boundary

06/12/2000 1338 Field blank <0.03 <0.03 <0.09 <0.06 <0.06

Sweetwater Reservoir east end reservoir fill 

boundary

06/06/2001 1041 Replicate <0.03 <0.03 <0.09 <0.06 <0.06

Loveland Reservoir near dam 09/06/2000 0938 Field blank <0.03 <0.03 <0.09 <0.06 <0.06

Loveland Reservoir near dam 09/06/2000 0939 Source-solution blank <0.03 <0.03 <0.09 <0.06 <0.06

QC/QA site for Sacramento project office 11/29/1999 1550 Source-solution blank <0.03 <0.03 <0.09 <0.06 <0.06

QC/QA site for Sacramento project office1 03/13/2000 1118 Field blank <0.03 <0.03 <0.09 <0.06 <0.06 1Blank nano-pure water from Sweetwater Laboratory.

160 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 14  

161

Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

1,1-Dichloroethane

(34496)

1,1-Dichloroethylene

(34501)

1,1-Dichloropropene

(77168) 

1,2,3,4-

Tetramethylbenzene

(49999)

1,2,3,5-

Tetramethylbenzene

 (50000)

1,2,3-Trichlorobenzene

(77613)

1,2,3-Trichloropropane

(77443) 

 1,2,3-Trimethylbenzene 

(77221)

 1,2,4-Trichlorobenzene

(34551)

Sweetwater Reservoir near pump tower <0.04 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2Sweetwater Reservoir center of minimum pool <0.07 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2Sweetwater Reservoir east end reservoir fill 

boundary

<0.07 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2

Sweetwater Reservoir east end reservoir fill 

boundary

<0.07 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2

Sweetwater Reservoir east end reservoir fill 

boundary

<0.04 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2

Loveland Reservoir near dam <0.07 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2Loveland Reservoir near dam <0.07 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2QC/QA site for Sacramento project office <0.07 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2QC/QA site for Sacramento project office1 <0.07 <0.04 <0.3 <0.2 <0.2 <0.3 <0.16 <0.1 <0.2

1Blank nano-pure water from Sweetwater Laboratory.
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

1,2,4-Trimethylbenzene

(77222)

1,2-Dibromo-3-

chloropropane 

(82625)

1,2-Dibromoethane 

(77651)

1,2-Dichlorobenzene

(34536)

1,2-Dichloroethane 

(32103)

1,2-Dichloropropane 

(34541)

1,3,5-Trimethylbenzene

(77226)

1,3-Dichlorobenzene

(34566)

1,3-Dichloropropane

(77173)

1,4-Dichlorobenzene

(34571)

Sweetwater Reservoir near pump tower <0.06 <0.2 <0.04 <0.03 <0.1 <0.03 <0.04 <0.03 <0.1 <0.05

Sweetwater Reservoir center of minimum 

pool

<0.06 <0.2 <0.04 <0.05 <0.1 <0.07 <0.04 <0.05 <0.1 <0.05

Sweetwater Reservoir east end reservoir fill 

boundary

<0.06 <0.2 <0.04 <0.05 <0.1 <0.07 <0.04 <0.05 <0.1 <0.05

Sweetwater Reservoir east end reservoir fill 

boundary

<0.06 <0.2 <0.04 <0.05 <0.1 <0.07 <0.04 <0.05 <0.1 <0.05

Sweetwater Reservoir east end reservoir fill 

boundary

<0.06 <0.2 <0.04 <0.03 <0.1 <0.03 <0.04 <0.03 <0.1 <0.05

Loveland Reservoir near dam <0.06 <0.2 <0.04 <0.05 <0.1 <0.07 <0.04 <0.05 <0.1 <0.05

Loveland Reservoir near dam <0.06 <0.2 <0.04 <0.05 <0.1 <0.07 <0.04 <0.05 <0.1 <0.05

QC/QA site for Sacramento project office <0.06 <0.2 <0.04 <0.05 <0.1 <0.07 <0.04 <0.05 <0.1 <0.05

QC/QA site for Sacramento project office1 <0.06 <0.2 <0.04 <0.05 <0.1 <0.07 <0.04 <0.05 <0.1 <0.05

1Blank nano-pure water from Sweetwater Laboratory.

162 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

2,2-Dichloropropane

( 77170)

2-Chlorotoluene

(77275)

o-Ethyl 

toluene

(77220)

3-Chloropropene

(78109)

4-Chlorotoluene

(77277)

4-Isopropyl1-methylbenzene

(77356)

Acetone

(81552)

Acrylonitrile 

(34215)

Benzene

(34030)

Sweetwater Reservoir near pump tower <0.05 <0.03 <0.06 <0.07 <0.06 <0.07 <7 <1 E0.01Sweetwater Reservoir center of minimum pool <0.05 <0.04 <0.06 <0.2 <0.06 <0.07 <7 <1 <0.04Sweetwater Reservoir east end reservoir fill 

boundary

<0.05 <0.04 <0.06 <0.2 <0.06 <0.07 <7 <1 <0.04

Sweetwater Reservoir east end reservoir fill 

boundary

<0.05 <0.04 <0.06 <0.2 <0.06 <0.07 <7 <1 <0.04

Sweetwater Reservoir east end reservoir fill 

boundary

<0.05 <0.03 <0.06 <0.07 <0.06 <0.07 <7 <1 <0.04

Loveland Reservoir near dam <0.05 <0.04 <0.06 <0.2 <0.06 <0.07 <7 <1 <0.04Loveland Reservoir near dam <0.05 <0.04 <0.06 <0.2 <0.06 <0.07 <7 <1 <0.04QC/QA site for Sacramento project office <0.05 <0.04 <0.06 <0.2 <0.06 <0.07 <7 <1 <0.04QC/QA site for Sacramento project office1 <0.05 <0.04 <0.06 <0.2 <0.06 <0.07 <7 <1 <0.04

1Blank nano-pure water from Sweetwater Laboratory

Table 14  163
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

Bromobenzene

(81555)

Bromochloromethane

(77297)

Bromodichloromethane

(32101)

Bromoethene 

(50002)

Bromomethane

(34413) 

Carbon 

disulfide

(77041)

Chlorobenzene

(34301)

Chloroethane

(34311)

Chloromethane

(34418)

Sweetwater Reservoir near pump tower <0.04 <0.04 0.23 <0.1 <0.3 <0.07 <0.03 <0.1 <0.2Sweetwater Reservoir center of minimum pool <0.04 <0.04 0.32 <0.1 <0.3 <0.07 <0.03 <0.1 <0.5Sweetwater Reservoir east end reservoir fill 

boundary

<0.04 <0.04 <0.05 <0.1 <0.3 <0.07 <0.03 <0.1 <0.5

Sweetwater Reservoir east end reservoir fill 

boundary

<0.04 <0.04 <0.05 <0.1 <0.3 <0.07 <0.03 <0.1 <0.5

Sweetwater Reservoir east end reservoir fill 

boundary

<0.04 <0.04 E0.04 <0.1 <0.3 <0.07 <0.03 <0.1 <0.2

Loveland Reservoir near dam <0.04 <0.04 <0.05 <0.1 <0.3 <0.07 <0.03 <0.1 <0.5Loveland Reservoir near dam <0.04 <0.04 <0.05 <0.1 <0.3 <0.07 <0.03 <0.1 <0.5QC/QA site for Sacramento project office <0.04 <0.04 E0.02 <0.1 <0.3 <0.07 <0.03 <0.1 <0.5QC/QA site for Sacramento project office1 <0.04 <0.04 <0.05 <0.1 <0.3 <0.07 <0.03 <0.1 <0.5 1Blank nano-pure water from Sweetwater Laboratory.

164  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

cis-1,2-Dichloroethylene

(77093)

cis-1,3-Dichloropropene

(34704)

Dibromochloromethane

(32105)

Dibromomethane

(30217) 

Dichlorodifluoromethane

(34668)

Dichloromethane

(34423)

Diethyl

ether

(81576)

Diisopropyl 

ether

(81577)

Ethyl methacrylate

(73570)

Sweetwater Reservoir near pump tower <0.04 <0.09 E0.2 <0.05 <0.27 <0.2 <0.2 <0.1 <0.2

Sweetwater Reservoir center of minimum pool <0.04 <0.09 0.3 <0.05 <0.27 <0.4 <0.2 <0.1 <0.2

Sweetwater Reservoir east end reservoir fill 

boundary

<0.04 <0.09 <0.2 <0.05 <0.27 <0.4 <0.2 <0.1 <0.2

Sweetwater Reservoir east end reservoir fill 

boundary

<0.04 <0.09 <0.2 <0.05 <0.27 <0.4 <0.2 <0.1 <0.2

Sweetwater Reservoir east end reservoir fill 

boundary

<0.04 <0.09 M <0.05 <0.27 <0.2 <0.2 <0.1 <0.2

Loveland Reservoir near dam <0.04 <0.09 <0.2 <0.05 <0.27 <0.4 <0.2 <0.1 <0.2

Loveland Reservoir near dam <0.04 <0.09 <0.2 <0.05 <0.27 <0.4 <0.2 <0.1 <0.2

QC/QA site for Sacramento project office <0.04 <0.09 <0.2 <0.05 <0.27 M <0.2 <0.1 <0.2

QC/QA site for Sacramento project office1 <0.04 <0.09 <0.2 <0.05 <0.27 M <0.2 <0.1 <0.2

1Blank nano-pure water from Sweetwater Laboratory.

Table 14  165
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

2-Butanone

(81595)

Ethylbenzene

(34371)

Hexachlorobutadiene

(39702) 

Hexachloroethane

(34396) 

Methyl 

iodide 

(77424)

4-Methyl-2-

pentanone

(78133) 

Isopropylbenzene

(77223) 

Methyl 

acrylonitrile

(81593) 

Methyl 

acrylate

(49991) 

Methyl 

methacrylate

(81597)

Sweetwater Reservoir near pump tower <1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

Sweetwater Reservoir center of minimum pool <1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

Sweetwater Reservoir east end reservoir fill 

boundary

<1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

Sweetwater Reservoir east end reservoir fill 

boundary

<1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

Sweetwater Reservoir east end reservoir fill 

boundary

<1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

Loveland Reservoir near dam <1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

Loveland Reservoir near dam <1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

QC/QA site for Sacramento project office <1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3

QC/QA site for Sacramento project office1 <1.6 <0.03 <0.1 <0.2 <0.12 <0.4 <0.03 <0.6 <1.4 <0.3 1Blank nano-pure water from Sweetwater Laboratory.

166  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

tert-Pentyl 

methyl 

ether

(50005)

m- and pXylene

(85795)

Naphthalene

(34696)

2-Hexanone

(77103)

n-Butylbenzene

(77342)

n-Propylbenzene

(77224) 

o-Xylene

(77135)

sec-Butylbenzene

(77350)

Styrene

(77128)

Sweetwater Reservoir near pump tower <0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04Sweetwater Reservoir center of minimum pool <0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04Sweetwater Reservoir east end reservoir fill 

boundary

<0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04

Sweetwater Reservoir east end reservoir fill 

boundary

<0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04

Sweetwater Reservoir east end reservoir fill 

boundary

<0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04

Loveland Reservoir near dam <0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04Loveland Reservoir near dam <0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04QC/QA site for Sacramento project office <0.11 E0.02 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04QC/QA site for Sacramento project office1 <0.11 <0.06 <0.2 <0.7 <0.2 <0.04 <0.04 <0.03 <0.04

1Blank nano-pure water from Sweetwater Laboratory.

Table 14  167
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

Ethyl tertbutyl ether

(50004)

Methyl tertbutyl ether 

(MTBE)

(78032)

tert-Butylbenzene

(77353)

Tetrachloroethylene

(34475)

Tetrachloromethane

(32102)

Tetrahydrofuran 

(81607)

Toluene

(34010)

trans-1,2-Dichloroethylene

(34546) 

trans-1,3-

Dichloropropene

(34699) 

Sweetwater Reservoir near pump tower <0.05 0.2 <0.06 <0.1 <0.06 <2 E0.01 <0.03 <0.09Sweetwater Reservoir center of minimum pool <0.05 0.2 <0.06 <0.1 <0.06 <2 E0.04 <0.03 <0.09Sweetwater Reservoir east end reservoir fill 

boundary

<0.05 <0.2 <0.06 <0.1 <0.06 <2 <0.05 <0.03 <0.09

Sweetwater Reservoir east end reservoir fill 

boundary

<0.05 <0.2 <0.06 <0.1 <0.06 <2 <0.05 <0.03 <0.09

Sweetwater Reservoir east end reservoir fill 

boundary

<0.05

M <0.06 <0.1 <0.06 <2 E0.01 <0.03 <0.09

Loveland Reservoir near dam <0.05 <0.2 <0.06 <0.1 <0.06 <2 E0.01 <0.03 <0.09Loveland Reservoir near dam <0.05 <0.2 <0.06 <0.1 <0.06 <2 E0.01 <0.03 <0.09QC/QA site for Sacramento project office <0.05 E0.1 <0.06 <0.1 <0.06 <2 E0.01 <0.03 <0.09QC/QA site for Sacramento project office1 <0.05 <0.2 <0.06 <0.1 <0.06 <2 E0.02 <0.03 <0.09

1Blank nano-pure water from Sweetwater Laboratory.

168  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 14. Quality-control analytical results for volatile organic compound (VOC) concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2020 

for water samples from Sweetwater and Loveland Reservoirs, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in micrograms per liter (mg/L), unless noted. E, estimated value; M, compound measured below detection limit but not quantifiable; QC, quality control; mm/dd/yyyy, month/day/year; QA, quality assurance; <, compound was not detected at a concentration above laboratory reporting level]

Site name

trans-1,4-

Dichloro-2-

butene

(73547)

Bromoform

(32104)

Trichloroethylene

(39180)

Trichlorofluoromethane

(34488)

Chloroform

(32106)

Vinyl 

chloride

(39175)

1,4-Bromofluorobenzene 

(surrogate) 

(99834)

1,2-Dichloroethane-d4

(surrogate)

(99832)

Toluene-d8

(surrogate)

(99833) 

Sweetwater Reservoir near pump tower <0.7 <0.06 <0.04 <0.09 0.25 <0.1 109 86.4 98.4Sweetwater Reservoir center of minimum pool <0.7 <0.06 <0.04 <0.09 0.38 <0.1 102 104 104Sweetwater Reservoir east end reservoir fill 

boundary

<0.7 <0.06 <0.04 <0.09 <0.05 <0.1 123 102 109

Sweetwater Reservoir east end reservoir fill 

boundary

<0.7 <0.06 <0.04 <0.09 <0.05 <0.1 119 102 108

Sweetwater Reservoir east end reservoir fill 

boundary

<0.7 <0.06 <0.04 <0.09 E0.03 <0.1 102 89.7 98.1

Loveland Reservoir near dam <0.7 <0.06 <0.04 <0.09 <0.05 <0.1 89.2 100 97.0Loveland Reservoir near dam <0.7 <0.06 <0.04 <0.09 <0.05 <0.1 93.8 101 96.5QC/QA site for Sacramento project office <0.7 <0.06 <0.04 <0.09 0.11 <0.1 87.9 106 99.0QC/QA site for Sacramento project office1 <0.7 <0.06 <0.04 <0.09 <0.05 <0.1 104 104 104

Table 14  169

1Blank nano-pure water from Sweetwater Laboratory.
Table 15. Quality-control analytical results for pesticide concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for filtered water 

samples from Perdue Treatment Plant, San Diego County, California.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in percent recovered. E, estimated value; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level]

Site name

Date

(mm/dd/

yyyy)

Time Sample type 2,6-Diethyl- aniline

(82660)

Acetochlor

(49260)

Alachlor

(46342) 

a-HCH

(34253)

Atrazine

(39632) 

Azinphosmethyl

(82686) 

Perdue Treatment Plant—finished 

water at SWR 

12/4/2000 1512 Field spike 1.0 121.2 121.2 107.7 107.7 E33.7

Perdue Treatment Plant—finished 

water at SWR 

12/4/2000 1513 Field spike replicate 1.0 119.2 119.2 104.8 105.8 E31.7

Site name Benfluralin

(82673)

Butylate

(04028)

Carbaryl 

(82680)

Carbofuran 

(82674)

Chlorpyrifos 

(38933)

Cyanazine

(04041) 

DCPA

(Dacthal)

(82682)

Deethylatrazine 

(04040)

Diazinon

(39572)

Perdue Treatment Plant—finished 

water at SWR 

85.6 104.8 E198.1 E122.1 91.3 97.1 86.5 E57.7 103.8

Perdue Treatment Plant—finished 

water at SWR 

80.8 101.0 E197.1 E120.2 89.4 95.2 85.6 E55.8 93.3

Site name Dieldrin

(39381) 

Disulfoton

(82677) 

EPTC

(82668)

Ethalfluralin 

(82663)

Ethoprop 

(82672)

Fonofos 

(04095)

Lindane

(39341)

Linuron

(82666)

Malathion

(39532)

Perdue Treatment Plant—finished 

water at SWR 

74.0

— 82.7 87.5 89.4 3.8 117.3 128.8 94.2

Perdue Treatment Plant—finished 

water at SWR 

101.0

— 76.0 87.5 88.5 5.8 103.8 128.8 93.3

170 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 15. Quality-control analytical results for pesticide concentrations using U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for filtered water 

samples from Perdue Treatment Plant, San Diego County, California—Continued.[Time is denoted in 24-hour scale. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Concentrations are given in percent recovered. E, estimated value; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir; —, compound was not detected at a concentration above laboratory reporting level]

Site name Metolachlor (39415) Metribuzin (82630) Molinate (82671) Napropamide (82684) p,p’-DDE (34653) Parathion (39542)

Parathionmethyl 

(82667) 

Pebulate

(82669) 

Pendimethalin

(82683) 

Perdue Treatment Plant—finished water at 

SWR 

115.4 95.2 95.2 121.1 80.8 84.6 106.7 87.5 106.7

Perdue Treatment Plant—finished water at 

SWR 

115.4 92.3 91.3 111.5 74.0 87.5 87.5 80.8 109.6

Site name cis-Permethrin (82687) Phorate (82664) Prometon (04037) Pronamide (82676) Propachlor (04024) Propanil (82679) Propargite (82685) Simazine (04035) Tebuthiuron (82670) 

Perdue Treatment Plant—finished water at 

SWR 

68.3 — 96.2 105.8 126.9 107.7 125.0 95.2 125.0

Perdue Treatment Plant—finished water at 

SWR 

66.3 — 96.2 96.2 122.1 102.9 125.0 91.3 125.0

Site name Terbacil (82665) Terbufos (82675) Thiobencarb (82681) Triallate (82678) Trifluralin (82661)

Diazinon-d10 

(surrogate)

(91063) 

(percent)

a- HCH-d6

(surrogate)

(91065)

(percent)

Perdue Treatment Plant—finished water at 

SWR 

E51.0 E9.6 105.8 121.2 86.5 130 101

Perdue Treatment Plant—finished water at 

SWR 

E52.9 — 101.0 113.5 80.8 120 98.9

Table 15  171
Sampling 

date

(mm/dd/yyyy)

Blank

analysis

date

(mm/dd/yyyy)

Pressure

 (torr)

Temperature

 (°C)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane

Chloroethene 

(vinyl 

chloride) 

Bromomethane Chloro- ethane

Bromoethene 

(vinyl 

bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

10/02/1999 10/07/1999 751 15.6

—

—

—

—

—

—

—

10/13/1999 10/21/1999 751 16.8 E0.025

—

—

—

—

—

—

10/26/1999 10/28/1999 756 20.1 E0.007

—

—

—

—

—

—

11/07/1999 11/15/1999 757 16.7 E0.006

—

—

—

—

—

—

11/19/1999 11/29/1999 759 13.1 E0.012

—

—

—

—

—

—

12/13/1999 12/16/1999 758 10.4 E0.007

—

—

—

—

—

—

12/25/1999 01/13/2000 759 14.9 E0.026 E0.046

—

—

—

—

—

01/06/2000 01/13/2000 760 11.7 E0.007 E0.101

—

—

—

—

—

01/18/2000 01/24/2000 756 18.8 E0.028

—

— 0.541

—

—

—

01/30/2000 02/03/2000 758 13.3

—

—

—

—

—

—

—

02/11/2000 02/17/2000 757 13.4 E0.007 E0.084

—

—

—

—

—

03/18/2000 03/23/2000 756 16.8 E0.002

—

—

—

—

—

—

04/11/2000 04/25/2000 755 16.9

—

—

—

—

—

—

—

04/23/2000 04/25/2000 755 15.8 E0.002

—

—

—

—

—

—

05/05/2000 05/18/2000 752 17.2

— E0.161

—

—

—

—

—

05/17/2000 05/18/2000 754 15.7

—

—

—

—

—

—

—

05/29/2000 06/12/2000 751 16.6

—

—

—

—

—

—

—

06/10/2000 06/12/2000 752 15.5

—

—

—

—

—

—

—

06/29/2000 07/17/2000 752 18.2 E0.029 0.465

—

—

—

— E0.001

07/11/2000 07/17/2000 755 15.8 E0.009

—

—

—

—

—

—

07/23/2000 08/07/2000 755 18.6

—

—

—

—

—

—

—

08/04/2000 08/07/2000 753 19.8 E0.002

—

—

—

—

—

—

08/16/2000 09/19/2000 753 24.3 E0.111

—

—

—

—

—

—

08/28/2000 09/19/2000 752 20.0 E0.045

—

—

—

—

—

—

Table 16A. Quality-control analytical cartridge travel blank results for volatile organic compounds with low breakthrough volumes for the Sweetwater Reservoir air sampling site, San Diego County, California.[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank is 1.5 liters. Many samples were frozen at laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. oC, degrees Celsius; mm/dd/yyyy, month/day/year; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

172 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Sampling 

date

(mm/dd/yyyy)

Blank

analysis

date

(mm/dd/yyyy)

Pressure

 (torr)

Temperature

 (°C)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane

Chloroethene 

(vinyl 

chloride) 

Bromomethane Chloro- ethane

Bromoethene 

(vinyl 

bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

09/09/2000 09/19/2000 749 19.1 E0.036 — — — — — —09/21/2000 10/12/2000 748 19.5 E0.003 — — — — — —10/03/2000 10/12/2000 752 19.6 E0.017 — — — — — —11/08/2000 11/16/2000 754 13.6 — — — — — — —11/20/2000 12/07/2000 755 16.2 — — — — — — —12/02/2000 12/07/2000 755 12.1 — — — — — — —12/14/2000 12/20/2000 761 11.8 E0.010 E0.125 — — — — —12/26/2000 01/12/2001 758 12.9 E0.034 E0.031 — — — — —01/07/2001 01/12/2001 754 13.3 NA NA NA NA NA NA NA01/19/2001 02/06/2001 759 11.0 E0.010 — — — — — —01/31/2001 02/06/2001 758 10.7 E0.014 0.517 — — — — —02/12/2001 03/05/2001 752 12.2 E0.007 — — — — — —02/24/2001 03/05/2001 755 9.6 E0.014 — — — — — —03/08/2001 03/26/2001 758 12.6 E0.047 E0.091 — — — — E0.00403/20/2001 03/26/2001 754 17.1 NA NA NA NA NA NA NA04/01/2001 04/24/2001 752 14.5 E0.064 E0.183 — E0.051 — — —04/13/2001 04/24/2001 756 14.4 E0.026 E0.100 — — — — —04/25/2001 05/10/2001 753 17.3 E0.006 — — — — — —05/07/2001 05/10/2001 754 18.5 E0.009 — — — — — —05/19/2001 06/07/2001 753 16.8 E0.009 — — — — — —05/31/2001 06/07/2001 752 16.9 E0.014 — — — — — —06/12/2001 06/28/2001 751 16.6 E0.010 — — — — — —06/24/2001 06/28/2001 754 16.9 E0.008 — — — — — —

Table 16A. Quality-control analytical cartridge travel blank results for volatile organic compounds with low breakthrough volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank is 1.5 liters. Many samples were frozen at laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. oC, degrees Celsius; mm/dd/yyyy, month/day/year; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Table 16A 173
Table 16A. Quality-control analytical cartridge travel blank results for volatile organic compounds with low breakthrough volumes for the Sweetwater Reservoir air sampling 

site, San Diego County, California.—Continued[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank is 1.5 liters. Many samples were frozen at laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. oC, degrees Celsius; mm/dd/yyyy, month/day/year; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Blank

analysis

date

(mm/dd/yyyy)

Pressure

 (torr)

Temperature

 (°C)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane

Chloroethene 

(vinyl 

chloride) 

Bromomethane Chloro- ethane

Bromoethene 

(vinyl 

bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

07/05/2001 07/24/2001 753 19.6

—

—

—

—

—

—

—

07/16/2001 08/09/2001 753 17.5 E0.007

—

—

—

—

—

—

08/08/2001 08/21/2001 753 17.7 E0.015

—

—

—

—

—

—

08/23/2001 09/12/2001 753 20.4 E0.013

—

—

—

—

—

—

09/16/2001 10/10/2001 752 20.0 E0.004

—

—

—

—

—

—

09/28/2001 10/10/2001 749 19.0 E0.010

—

—

—

—

—

—

174  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 1

6B 175

Table 16B. Quality-control analytical cartridge spike results for volatile organic compounds with low breakthrough volumes for the Sweetwater Reservoir air sampling site, San Diego County, California.[The site identification number is 324141117001601. Values are given in percent recovered. Samples were analyzed at 20 degrees Celsius and 760 torr. Many samples were frozen at the laboratory and analyzed on the same day. Sample volume spike is 1.5 liters. Data for travel blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mmddyyyy, month/day/year; *, sample data lost; NA, not analyzed]

Sampling 

date

(mm/dd/yyyy)

Spike analysis

 date

(mm/dd/yyyy)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane Chloroethene (vinyl chloride) Bromomethane Chloro- ethane

Bromoethene 

(vinyl 

bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

10/02/1999 10/07/1999 103.1 109.7 108.0 NA 100.2 104.2 100.510/13/1999 10/21/1999 102.8 90.3 115.1 NA 106.6 115.2 100.910/26/1999 10/28/1999 108.7 87.8 97.5 NA 113.8 102.8 109.011/07/1999 11/15/1999 97.8 135.7 101.9 NA 126.2 103.4 98.811/19/1999 11/29/1999 96.3 143.0 104.8 NA 120.0 106.5 94.912/13/1999 12/16/1999 97.5 83.0 94.7 NA 95.2 100.0 94.912/25/1999, 01/06/2000 01/13/2000 104.6 93.6 112.1 NA 106.3 111.9 101.601/18/2000 01/24/2000 NA NA NA NA NA NA NA01/30/2000 02/03/2000 96.0 133.4 95.7 93.5 NA 118.0 104.002/11/2000 02/17/2000 98.2 81.1 97.2 70.1 85.4 102.6 97.603/18/2000 03/23/2000 102.1 130.3 114.4 130.8 105.9 109.1 101.904/11/2000, 04/23/2000 04/25/2000 103.7 98.2 112.0 79.1 101.9 103.1 103.905/05/2000, 05/17/2000 05/18/2000 106.2 138.9 126.7 NA 128.2 118.5 107.805/29/2000, 06/10/2000 06/12/2000 106.9 113.6 112.2 59.3 104.2 114.0 102.006/29/2000, 07/11/2000 07/17/2000 87.4 114.0 75.3 53.9 78.7 85.3 91.607/23/2000, 08/04/2000 08/07/2000 94.4 121.0 105.1 18.7 124.2 112.2 103.108/16/2000, 08/29/2000, 

09/09/2000

09/19/2000 113.3 89.3 110.0 NA 77.2 111.9 120.9

09/21/2000, 10/03/2000 10/12/2000 99.1 75.9 75.8 NA 84.2 91.9 104.511/08/2000 11/16/2000 107.7 124.3 110.7 NA 82.1 103.8 113.711/20/2000,* 12/02/2000* 12/07/2000* NA NA NA NA NA NA NA12/14/2000 12/20/2000 117.0 133.1 127.6 NA 106.8 113.0 115.512/26/2000, 01/07/2001 01/12/2001 91.8 95.5 123.4 NA 119.7 130.2 116.901/19/2001, 01/31/2001 02/06/2001 112.5 77.7 103.6 NA 93.5 107.5 103.402/12/2001, 02/24/2001 03/05/2001 99.6 127.4 112.2 NA 128.3 117.4 112.9
Table 16B. Quality-control analytical cartridge spike results for volatile organic compounds with low breakthrough volumes for the Sweetwater Reservoir air 

sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Values are given in percent recovered. Samples were analyzed at 20 degrees Celsius and 760 torr. Many samples were frozen at the laboratory and analyzed on the same day. Sample volume spike is 1.5 liters. Data for travel blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mmddyyyy, month/day/year; *, sample data lost; NA, not analyzed]

Sampling 

date

(mm/dd/yyyy)

Spike analysis

 date

(mm/dd/yyyy)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane Chloroethene (vinyl chloride) Bromomethane Chloro- ethane

Bromoethene 

(vinyl 

bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

03/08/2001, 03/20/2001 03/26/2001 71.1 71.3 86.1 NA 73.8 100.1 86.004/01/2001, 04/13/2001 04/24/2001 114.9 97.4 126.1 NA 112.3 124.9 120.104/25/2001, 05/07/2001 05/10/2001 87.7 128.9 112.4 NA 97.7 107.5 104.905/07/2001 05/10/2001 87.7 128.9 112.4 NA 97.7 107.5 104.95/19/2001, 05/31/2001 06/07/2001 125.0 107.7 122.3 NA 112.3 126.0 120.56/12/2001, 06/24/2001 06/28/2001 92.2 78.2 75.3 NA 128.4 81.4 94.407/05/2001 07/24/2001 105.9 83.2 98.0 NA 82.5 112.7 119.507/16/2001 08/09/2001 95.2 126.7 102.7 NA 95.8 112.4 104.608/08/2001 08/21/2001 102.6 70.2 84.4 NA 94.5 86.7 100.108/23/2001 09/12/2001 93.3 132.0 97.0 NA 115.8 96.8 99.69/16/2001, 09/28/2001 10/10/2001 114.6 123.7 105.4 NA 116.2 115.2 125.5

176  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 16C. Quality-control analytical cartridge lot blank results for volatile organic compounds with low breakthrough volumes for the 

Sweetwater Reservoir air sampling site, San Diego County, California. 

[The site identification number is 324141117001601, Concentrations are given in parts per billion by volume (ppbv). Sample volume is 1.5 liters. Samples were 

analyzed at 20 degrees Celsius and 760 torr. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, estimated value; NA, 

not analyzed; —, compound was not detected at concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Blank 

analysis

date

(mm/dd/

yyyy)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane

Chloroethene 

(vinyl 

chloride) 

BromomethaneChloroethane

Bromoethene 

(vinyl bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

10/02/1999 10/07/1999 — — — — — — —

10/13/1999 10/21/1999 — — — — — — —

10/26/1999 10/28/1999 — — — — — — —

11/07/1999 11/15/1999 — — — — — — —

11/19/1999 11/29/1999 — — — — — — —

12/13/1999 12/16/1999 — — — — — — —

12/25/1999 01/13/2000 — — — — — — —

01/06/2000 01/13/2000 — — — — — — —

01/18/2000 01/24/2000 — — — — — — —

01/30/2000 02/03/2000 — — — — — — —

02/11/2000 02/17/2000 — — — — — — —

03/18/2000 03/23/2000 — — — — — — —

04/11/2000 04/25/2000 — — — — — — —

04/23/2000 04/25/2000 — — — — — — —

05/05/2000 05/18/2000 — E0.007 — — — — —

05/17/2000 05/18/2000 — — — — — — —

05/29/2000 06/12/2000 — — — — — — —

06/10/2000 06/12/2000 — — — — — — —

06/29/2000 07/17/2000 — — — — — — —

07/11/2000 07/17/2000 — — — — — — —

07/23/2000 08/07/2000 E0.004 — — — — — —

08/04/2000 08/07/2000 E0.003 — — — — — —

08/16/2000 09/19/2000 — — — — — — —

08/28/2000 09/19/2000 — — — — — — —

09/09/2000 09/19/2000 E0.050 — — — — — —

09/21/2000 10/12/2000 E0.004 — — — — — —

10/03/2000 10/12/2000 — — — — — — —

11/08/2000 11/16/2000 — — — — — — —

11/20/2000 12/07/2000 — — — — — — —

12/02/2000 12/07/2000 — — — — — — —

12/14/2000 12/20/2000 — — — — — — —

Table 16C 177
Sampling 

date

(mm/dd/yyyy)

Blank 

analysis

date

(mm/dd/

yyyy)

Dichlorodifluoromethane 

(CFC-12)

Chloromethane

Chloroethene 

(vinyl 

chloride) 

BromomethaneChloroethane

Bromoethene 

(vinyl bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

12/26/2000 01/12/2001 E0.005 — — — — — —

01/07/2001 01/12/2001 NA NA NA NA NA NA NA

01/19/2001 02/06/2001 — — — — — — —

01/31/2001 02/06/2001 E0.008 — — — — — —

02/12/2001 03/05/2001 — — — — — — —

02/24/2001 03/05/2001 — — — — — — —

03/08/2001 03/26/2001 E0.025 — — — — — —

03/20/2001 03/26/2001 E0.025 — — — — — —

04/01/2001 04/24/2001 E0.012 — — — — — —

04/13/2001 04/24/2001 E0.026 — — — — — —

04/25/2001 05/10/2001 E0.010 — — — — — —

05/07/2001 05/10/2001 E0.020 — — — — — —

05/19/2001 06/07/2001 E0.007 — — — — — —

05/31/2001 06/07/2001 — — — — — — —

06/12/2001 06/28/2001 E0.017 — — — — — —

06/24/2001 06/28/2001 E0.003 — — — — — —

07/05/2001 07/24/2001 — — — — — — —

07/16/2001 08/09/2001 E0.007 — — — — — —

08/08/2001 08/21/2001 — — — — — — —

08/23/2001 09/12/2001 — — — — — — —

09/16/2001 10/10/2001 — — — — — — —

09/28/2001 10/10/2001 — — — — — — —

Table 16C. Quality-control analytical cartridge lot blank results for volatile organic compounds with low breakthrough volumes for the 

Sweetwater Reservoir air sampling site, San Diego County, California—Continued. 

[The site identification number is 324141117001601, Concentrations are given in parts per billion by volume (ppbv). Sample volume is 1.5 liters. Samples were 

analyzed at 20 degrees Celsius and 760 torr. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, estimated value; NA, 

not analyzed; —, compound was not detected at concentration above laboratory reporting level]

178  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Sampling 

date

(mm/dd/yyyy)

Blank 

analysis

date

(mm//dd/yyyy)

Dichlorodifluoromethane

 (CFC-12)

ChloromethaneChloroethene 

(vinyl chloride) 

BromomethaneChloroethaneBromoethene 

(vinyl bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

10/02/1999 10/07/1999 — — — — — — —

10/13/1999 10/21/1999 E0.020 — — — — — —

10/26/1999 10/28/1999 — — — — — — —

11/07/1999 11/15/1999 E0.008 — — — — — —

11/19/1999 11/29/1999 — — — — — — —

12/13/1999 12/16/1999 — — — — — — —

12/25/1999 01/13/2000 E0.010 — — — — — —

01/06/2000 01/13/2000 — — — — — — —

01/18/2000 01/24/2000 E0.027 E0.055 — — — — —

01/30/2000 02/03/2000 — — — — — — —

02/11/2000 02/17/2000 E0.009 E0.164 — — — — —

03/18/2000 03/23/2000 — — — — — — —

04/11/2000 04/25/2000 — E0.016 — — — — —

04/23/2000 04/25/2000 — — — — — — —

05/05/2000 05/18/2000 — E0.112 — — — — —

05/17/2000 05/18/2000 — — — — — — —

05/29/2000 06/12/2000 — — — — — — —

06/10/2000 06/12/2000 — — — — — — —

06/29/2000 07/17/2000 E0.010 — — — — — —

07/11/2000 07/17/2000 E0.012 — — — — — —

07/23/2000 08/07/2000 — — — — — — —

08/04/2000 08/07/2000 — — — — — — —

08/16/2000 09/19/2000 E0.058 — — — — — —

08/28/2000 09/19/2000 E0.039 — — — — — —

09/09/2000 09/19/2000 E0.049 — — — — — —

09/21/2000 10/12/2000 E0.002 — — — — — —

10/03/2000 10/12/2000 E0.010 — — — — — —

11/08/2000 11/16/2000 — — — — — — —

11/20/2000 12/07/2000 — — — — — — —

12/02/2000 12/07/2000 — — — — — — —

12/14/2000 12/20/2000 — — — — — — —

12/26/2000 01/12/2001 E0.014 — — — — — —

Table 16D. Quality-control analytical laboratory blank results for volatile organic compounds with low breakthrough volumes for the 

Sweetwater Reservoir air sampling site, San Diego County, California.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume is 1.5 liters. Samples were 

analyzed at 20 degrees Celsius and 760 torr. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, estimated value; NA, not 

analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Table 16D 179
Sampling 

date

(mm/dd/yyyy)

Blank 

analysis

date

(mm//dd/yyyy)

Dichlorodifluoromethane

 (CFC-12)

ChloromethaneChloroethene 

(vinyl chloride) 

BromomethaneChloroethaneBromoethene 

(vinyl bromide)

1,1,2,-Trichloro1,2,2-trifluoroethane 

(CFC-113)

01/07/2001 1/812/2001 NA NA NA NA NA NA NA

01/19/2001 02/06/2001 E0.013 — — — — — —

01/31/2001 02/06/2001 — — — — — — —

02/12/2001 03/05/2001 E0.008 — — — — — —

02/24/2001 03/05/2001 E0.016 — — — — — —

03/08/2001 03/26/2001 E0.005 — — — — — —

03/20/2001 03/26/2001 E0.026 — — — — — —

04/01/2001 04/24/2001 E0.051 0.603 — E0.240 — — —

04/13/2001 04/24/2001 E0.018 — — — — — —

04/25/2001 05/10/2001 E0.010 — — — — — —

05/07/2001 05/10/2001 E0.004 — — — — — —

05/19/2001 06/07/2001 E0.002 — — — — — —

05/31/2001 06/07/2001 E0.011 — — — — — —

06/12/2001 06/28/2001 E0.020 — — — — — —

06/24/2001 06/28/2001 E0.006 — — — — — —

07/05/2001 07/24/2001 — — — — — — —

07/16/2001 08/09/2001 — — — — — — —

08/08/2001 08/21/2001 E0.015 — — — — — —

08/23/2001 09/12/2001 — — — — — — —

09/16/2001 10/10/2001 E0.005 — — — — — —

09/28/2001 10/10/2001 — — — — — — —

Table 16D. Quality-control analytical laboratory blank results for volatile organic compounds with low breakthrough volumes for the 

Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume is 1.5 liters. Samples were 

analyzed at 20 degrees Celsius and 760 torr. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, estimated value; NA, not 

analyzed; —, compound was not detected at a concentration above laboratory reporting level]

180 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A 181

Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Blank analysis

date

(mm/dd/yyyy)

Pressure 

(torr)

Temperature

 (°C)

Dibromomethane

BromodichloromethaneCarbon 

tetrachloride

1,2-DichloroethaneBromoform 

(Tribromomethane)

10/02/1999* 10/07/1999* 751 15.6 NA NA NA NA NA

10/13/1999 10/21/1999 751 16.8 — — — — —

10/26/1999 10/28/1999 756 20.1 — — — — —

11/07/1999 11/15/1999 757 16.7 — — — — —

11/19/1999 11/29/1999 759 13.1 — — — — —

12/13/1999 12/16/1999 758 10.4 — — — — —

12/25/1999 01/13/2000 759 14.9 — — — — —

01/06/2000 01/13/2000 760 11.7 — — — — —

01/18/2000 01/24/2000 756 18.8 — — — — —

01/30/2000 02/03/2000 758 13.3 — — — — —

02/11/2000 02/17/2000 757 13.4 — — — — —

03/18/2000 03/23/2000 756 16.8 — — — — —

04/11/2000 04/25/2000 755 16.9 — — — — —

04/23/2000 04/25/2000 755 15.8 — — — — —

05/05/2000 05/18/2000 752 17.2 — — — — —

05/17/2000 05/18/2000 754 15.7 — — — — —

05/29/2000 06/12/2000 751 16.6 — — — — —

06/10/2000 06/12/2000 752 15.5 — — — — —

06/29/2000 07/17/2000 752 18.2 — — — — —

07/11/2000 07/17/2000 755 15.8 — — — — —

07/23/2000 08/07/2000 755 18.6 — — — — —

08/04/2000 08/07/2000 753 19.8 — — — — —

08/16/2000 09/19/2000 753 24.3 — — — — —

08/28/2000 09/19/2000 752 20.0 — — — — —

09/09/2000 09/19/2000 749 19.1 — — — — —

09/21/2000 10/12/2000 748 19.5 — — — — —

10/03/2000 10/12/2000 752 19.6 — — — — —

11/08/2000 11/16/2000 754 13.6 — — — — —

11/20/2000 12/07/2000 755 16.2 — — — — —

12/02/2000 12/07/2000 755 12.1 — — — — —

12/14/2000 12/20/2000 761 11.8 — — — — —

12/26/2000 01/12/2001 758 12.9 — — — — —
Sampling 

date

(mm/dd/yyyy)

Blank analysis

date

(mm/dd/yyyy)

Pressure 

(torr)

Temperature

 (°C)

Dibromomethane

BromodichloromethaneCarbon 

tetrachloride

1,2-DichloroethaneBromoform 

(Tribromomethane)

01/07/2001 01/12/2001 754 13.3 — — — — —

01/19/2001 02/06/2001 759 11.0 — — — — —

01/31/2001 02/06/2001 758 10.7 NA NA NA NA NA

02/12/2001 03/05/2001 752 12.2 — — — — —

02/24/2001 03/05/2001 755 9.6 — — — — —

03/08/2001 03/26/2001 758 12.6 NA NA NA NA NA

03/20/2001 03/26/2001 754 17.1 NA NA NA NA NA

04/01/2001 04/24/2001 752 14.5 — — — — —

04/13/2001 04/24/2001 756 14.4 — — — — —

04/25/2001 05/10/2001 753 17.3 — — — — —

05/07/2001 05/10/2001 754 18.5 — — — — —

05/19/2001 06/07/2001 753 16.8 — — — — —

05/31/2001 06/07/2001 752 16.9 — — — — —

06/12/2001 06/28/2001 751 16.6 — — — — —

06/24/2001 06/28/2001 754 16.9 — — — — —

07/05/2001 07/24/2001 753 19.6 — — — — —

07/16/2001 08/09/2001 753 17.5 — — — — —

08/08/2001 08/21/2001 753 17.7 — — — — —

08/23/2001 09/12/2001 753 20.4 — — — — —

09/16/2001 10/10/2001 752 20.0 — — — — —

09/28/2001 10/10/2001 749 19.0 — — — — —

Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

182 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Dibromo

chloromethane

Chloroform 

(Trichloromethane)Toluene Benzene

2-Propenenitrile 

(acrylonitrile)

ChlorobenzeneEthylbenzene

Hexachloroethane

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 — — E0.014 E0.069 E0.004 — E0.001 —

10/26/1999 — — E0.011 E0.082 E0.005 — E0.001 —

11/07/1999 — — E0.008 E0.084 — — E0.001 —

11/19/1999 — — E0.003 E0.063 E0.006 — — —

12/13/1999 — E0.002 E0.020 E0.107 E0.009 — E0.002 —

12/25/1999 — — E0.010 E0.056 E0.007 — — —

01/06/2000 — — E0.007 E0.063 E0.017 — E0.001 —

01/18/2000 — — E0.015 E0.040 E0.010 — E0.001 —

01/30/2000 — — E0.011 E0.034 E0.004 — E0.002 —

02/11/2000 — — E0.007 E0.059 — — — —

03/18/2000 — — E0.001 E0.051 E0.001 — — —

04/11/2000 — — E0.003 E0.050 — — — —

04/23/2000 — — E0.003 E0.049 — — — —

05/05/2000 — — E0.001 E0.038 — — — —

05/17/2000 — — E0.001 E0.037 — — — —

05/29/2000 — — E0.020 E0.057 E0.005 — E0.001 —

06/10/2000 — — E0.007 0.166 E0.011 — — —

06/29/2000 — — E0.001 E0.035 E0.003 E0.001 — —

07/11/2000 — E0.001 E0.005 E0.052 — E0.001 — —

07/23/2000 — — E0.003 E0.002 — — — —

08/04/2000 — — E0.006 E0.036 — — — —

08/16/2000 — — E0.008 0.117 — E0.001 — —

08/28/2000 — E0.002 E0.049 E0.061 — — E0.001 —

09/09/2000 — — E0.066 E0.051 — — E0.001 —

09/21/2000 — — E0.003 E0.029 — — — —

10/03/2000 — E0.003 E0.030 E0.038 E0.006 E0.001 E0.002 —

11/08/2000 — — E0.009 E0.109 — E0.001 E0.001 —

11/20/2000 — — E0.028 0.143 E0.009 E0.001 E0.004 —

12/02/2000 — — E0.016 E0.105 E0.012 E0.001 E0.002 —

12/14/2000 — — E0.006 0.116 E0.001 — E0.001 —

12/26/2000 — — E0.008 E0.073 — — E0.001 —

Table 17A 183
Sampling 

date

(mm/dd/yyyy)

Dibromo

chloromethane

Chloroform 

(Trichloromethane)Toluene Benzene

2-Propenenitrile 

(acrylonitrile)

ChlorobenzeneEthylbenzene

Hexachloroethane

01/07/2001 — — E0.013 E0.073 — — E0.001 —

01/19/2001 — — E0.019 0.133 — E0.001 E0.003 —

01/31/2001 NA NA NA NA NA NA NA NA

02/12/2001 — — E0.005 E0.087 — — — —

02/24/2001 — — E0.009 E0.063 — — E0.001 —

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — E0.010 E0.046 — — E0.001 —

04/13/2001 — — E0.014 E0.058 — E0.001 E0.001 —

04/13/2001 — — E0.014 E0.058 — E0.001 E0.001 —

04/25/2001 — — E0.012 0.162 E0.007 — E0.001 —

05/07/2001 — — E0.017 0.134 — — E0.004 —

05/19/2001 — — E0.005 E0.006 — — E0.001 —

05/31/2001 — — E0.008 E0.009 — — E0.001 —

06/12/2001 — — E0.009 E0.043 — — — —

06/24/2001 — — E0.006 E0.043 — E0.003 — —

07/05/2001 — — E0.004 0.347 — — — —

07/16/2001 — — E0.016 E0.060 — E0.001 E0.001 —

08/08/2001 — — E0.008 0.158 — E0.001 E0.001 —

08/23/2001 — — E0.012 E0.064 — — E0.001 —

09/16/2001 — — E0.008 E0.113 — — E0.001 —

09/28/2001 — — E0.017 0.136 E0.006 — E0.002 —

Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

184  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methylene 

chloride

Tetrachloroethene

 (PCE)

1,1-Dichloroethane1,1-Dichloroethene

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1,2,2-Tetrachloroethane1,2-Dichlorobenzene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 E0.008 — — E0.004 — — — —

10/26/1999 E0.020 — — — — — — —

11/07/1999 E0.004 — — — — — — —

11/19/1999 E0.004 — — — — — — —

12/13/1999 E0.008 E0.001 — E0.006 — — — —

12/25/1999 E0.009 E0.003 — — — — — —

01/06/2000 E0.009 — — — — — — —

01/18/2000 E0.044 — — — — — — —

01/30/2000 E0.011 — — E0.003 — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 E0.001 — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — E0.007 — — — — — —

05/29/2000 E0.002 E0.021 — E0.007 — — — —

06/10/2000 E0.002 E0.009 — E0.002 — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 — — — 0.121 — — — —

08/28/2000 — — — E0.041 — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 E0.005 — — E0.019 — — — —

11/08/2000 E0.005 — — — — — — —

11/20/2000 E0.010 E0.001 — E0.003 — — — —

12/02/2000 — — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17A 185
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methylene 

chloride

Tetrachloroethene

 (PCE)

1,1-Dichloroethane1,1-Dichloroethene

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1,2,2-Tetrachloroethane1,2-Dichlorobenzene

01/07/2001 E0.003 — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 NA NA NA NA NA NA NA NA

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 E0.005 — — E0.007 — — — —

05/19/2001 — E0.022 — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 E0.001 — — E0.028 — — — —

06/24/2001 — — — E0.010 — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — E0.037 — — — —

09/28/2001 — — — E0.011 — — — —

186  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,2-Dichloropropane

trans-1,2-Dichloroethene1,2,4-Trichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene

Naphthalene

trans-1,3-

Dichloropropene

cis-1,3-Dichloropropene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 — — — — — E0.001 — —

10/26/1999 — — — — — E0.002 — —

11/07/1999 — — — — — E0.001 — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — E0.001 — —

01/18/2000 — — — — — E0.002 — —

01/30/2000 — — — — — E0.001 — —

02/11/2000 — — — — — E0.002 — —

03/18/2000 — — — — — E0.001 — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — E0.001 — —

06/10/2000 — — — — — E0.002 — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 — — — — — E0.001 — —

08/04/2000 — — — — — E0.001 — —

08/16/2000 — — — — — E0.001 — —

08/28/2000 — — — — — E0.001 — —

09/09/2000 — — — — — E0.001 — —

09/21/2000 — — — — — E0.001 — —

10/03/2000 — — — — — E0.002 — —

11/08/2000 — — — — — E0.001 — —

11/20/2000 — — — — — E0.006 — —

12/02/2000 — — — — — E0.005 — —

12/14/2000 — — — — — E0.002 — —

12/26/2000 — — — — — E0.001 — —

Table 17A 187
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,2-Dichloropropane

trans-1,2-Dichloroethene1,2,4-Trichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene

Naphthalene

trans-1,3-

Dichloropropene

cis-1,3-Dichloropropene

01/07/2001 — — — — — E0.001 — —

01/19/2001 — — — — — — — —

01/31/2001 NA NA NA NA NA NA NA NA

02/12/2001 — — — — — — — —

02/24/2001 — — — — — E0.001 — —

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — E0.002 — —

04/13/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — E0.007 — —

05/07/2001 — — — — — E0.004 — —

05/19/2001 — — — — — E0.001 — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — E0.002 — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — E0.001 — —

08/08/2001 — — — — — E0.001 — —

08/23/2001 — — — — — E0.001 — —

09/16/2001 — — — — — E0.001 — —

09/28/2001 — — — — — E0.001 — —

188  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Trichloroethene

(TCE)

Hexachlorobutadiene

Methyl 

methacrylate

1,2,3,4-TetramethylbenzeneEthyl tertbutyl ether 

(ETBE)

tert-Amyl 

methyl 

ether 

(TAME)

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 — — — — — — — —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 E0.003 — — — — — — —

05/29/2000 E0.015 — — — — — — —

06/10/2000 E0.005 — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17A 189
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Trichloroethene

(TCE)

Hexachlorobutadiene

Methyl 

methacrylate

1,2,3,4-TetramethylbenzeneEthyl tertbutyl ether 

(ETBE)

tert-Amyl 

methyl 

ether 

(TAME)

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 NA NA NA NA NA NA NA NA

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

190 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Carbon 

disulfide

cis1,2-Dichloroethene

2-Hexanone 

(MBK)

Ethenylbenzene 

(Styrene)

o-Xylene

1,1-Dichloropropene2,2-Dichloropropane1,3-Dichloropropane

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 — — — — E0.001 — — —

10/26/1999 — — — E0.001 E0.001 — — —

11/07/1999 — — — E0.001 E0.001 — — —

11/19/1999 — — — — — — — —

12/13/1999 E0.001 — — E0.001 E0.001 — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — E0.001 — — — —

01/18/2000 — — — E0.001 E0.002 — — —

01/30/2000 E0.001 — — E0.001 E0.001 — — —

02/11/2000 E0.001 — — — E0.001 — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — E0.001 — — — —

04/23/2000 E0.004 — — E0.001 — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 E0.001 — — E0.001 — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — E0.001 — — — —

07/11/2000 E0.006 — — E0.001 — — — —

07/23/2000 E0.001 — — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 E0.003 — — — — — — —

08/28/2000 — — — — E0.001 — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 E0.001 — — E0.001 E0.001 — — —

11/08/2000 E0.004 — — E0.004 E0.002 — — —

11/20/2000 — — — E0.005 E0.004 — — —

12/02/2000 E0.003 — — E0.005 E0.002 — — —

12/14/2000 E0.013 — — E0.001 E0.001 — — —

12/26/2000 — — — E0.001 E0.002 — — —

Table 17A 191
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Carbon 

disulfide

cis1,2-Dichloroethene

2-Hexanone 

(MBK)

Ethenylbenzene 

(Styrene)

o-Xylene

1,1-Dichloropropene2,2-Dichloropropane1,3-Dichloropropane

01/07/2001 E0.007 — — — E0.002 — — —

01/19/2001 — — — — — — — —

01/31/2001 NA NA NA NA NA NA NA NA

02/12/2001 — — — — — — — —

02/24/2001 — — — — E0.001 — — —

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 E0.001 — — E0.001 E0.001 — — —

04/13/2001 E0.001 — — E0.001 E0.001 — — —

04/13/2001 E0.001 — — E0.001 E0.001 — — —

04/25/2001 E0.005 — — E0.002 E0.001 — — —

05/07/2001 E0.008 — — E0.026 E0.029 — — —

05/19/2001 E0.007 — — — E0.001 — — —

05/31/2001 E0.003 — — — E0.001 — — —

06/12/2001 — — — — — — — —

06/24/2001 E0.017 — — E0.002 E0.001 — — —

07/05/2001 — — — — — — — —

07/16/2001 E0.002 — — — — — — —

08/08/2001 — — — — E0.001 — — —

08/23/2001 — — — — E0.001 — — —

09/16/2001 E0.005 — — E0.002 E0.001 — — —

09/28/2001 — — — — E0.002 — — —

192 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

2-Ethyltoluene

1,2,3-Trimethylbenzene1,2,4-TrimethylbenzeneIsopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-Trimethylbenzene1-Chloro-2-

methylbenzene

1-Chloro-4-

methylbenzene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 — — E0.001 — — — — —

10/26/1999 — — E0.001 — — — — —

11/07/1999 — — E0.001 — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — E0.001 — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — E0.004 — — — — —

12/02/2000 — — E0.002 — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17A 193
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

2-Ethyltoluene

1,2,3-Trimethylbenzene1,2,4-TrimethylbenzeneIsopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-Trimethylbenzene1-Chloro-2-

methylbenzene

1-Chloro-4-

methylbenzene

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 NA NA NA NA NA NA NA NA

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

194  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Bromochloromethane

n-Butylbenzenesec-Butylbenzene

tertButylbenzene1-Isopropyl-

4-methylbenzene

1,2,3-Trichloropropane

1,1,1,2-

Tetrachloroethane

1,2,3-Trichlorobenzene1,2-Dibromoethane 

10/02/1999* NA NA NA NA NA NA NA NA NA

10/13/1999 — — — — — — — — —

10/26/1999 — — — — — — — — —

11/07/1999 — — — — — — — — —

11/19/1999 — — — — — — — — —

12/13/1999 — — — — — — — — —

12/25/1999 — — — — — — — — —

01/06/2000 — — — — — — — — —

01/18/2000 — — — — — — — — —

01/30/2000 — — — — — — — — —

02/11/2000 — — — — — — — — —

03/18/2000 — — — — — — — — —

04/11/2000 — — — — — — — — —

04/23/2000 — — — — — — — — —

05/05/2000 — — — — — — — — —

05/17/2000 — — — — — — — — —

05/29/2000 — — — — — — — — —

06/10/2000 — — — — — — — — —

06/29/2000 — — — — — — — — —

07/11/2000 — — — — — — — — —

07/23/2000 — — — — — — — — —

08/04/2000 — — — — — — — — —

08/16/2000 — — — — — — — — —

08/28/2000 — — — — — — — — —

09/09/2000 — — — — — — — — —

09/21/2000 — — — — — — — — —

10/03/2000 — — — — — — — — —

11/08/2000 — — — — — — — — —

11/20/2000 — — — — — — — — —

12/02/2000 — — — — — — — — —

12/14/2000 — — — — — — — — —

12/26/2000 — — — — — — — — —

Table 17A 195
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Bromochloromethane

n-Butylbenzenesec-Butylbenzene

tertButylbenzene1-Isopropyl-

4-methylbenzene

1,2,3-Trichloropropane

1,1,1,2-

Tetrachloroethane

1,2,3-Trichlorobenzene1,2-Dibromoethane 

01/07/2001 — — — — — — — — —

01/19/2001 — — — — — — — — —

01/31/2001 NA NA NA NA NA NA NA NA NA

02/12/2001 — — — — — — — — —

02/24/2001 — — — — — — — — —

03/08/2001 NA NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — — —

04/13/2001 — — — — — — — — —

04/13/2001 — — — — — — — — —

04/25/2001 — — — — — — — — —

05/07/2001 — — — — — — — — —

05/19/2001 — — — — — — — — —

05/31/2001 — — — — — — — — —

06/12/2001 — — — — — — — — —

06/24/2001 — — — — — — — — —

07/05/2001 — — — — — — — — —

07/16/2001 — — — — — — — — —

08/08/2001 — — — — — — — — —

08/23/2001 — — — — — — — — —

09/16/2001 — — — — — — — — —

09/28/2001 — — — — — — — — —

196  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methyl tertbutyl ether 

(MTBE)

3-Chloro1-propene

4-Methyl-2-

pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropyl 

ether 

(DIPE)

Methyl 

acrylonitrile

2-Butanone 

(methyl ethyl 

ketone)

10/02/1999* NA NA NA NA NA NA NA NA NA

10/13/1999 E0.027 — — 0.323 — — — — —

10/26/1999 — — — E0.158 — — — — —

11/07/1999 — — — E0.074 — — — — —

11/19/1999 — — — E0.144 — — — — —

12/13/1999 E0.080 — — 0.562 — — — — —

12/25/1999 E0.005 — — 0.338 — — — — —

01/06/2000 — — — 0.221 — — — — —

01/18/2000 7.35 — — 0.359 — — — — —

01/30/2000 E0.091 — — 0.180 — — — — —

02/11/2000 — — — E0.062 — — — — —

03/18/2000 — — — E0.048 — — — — —

04/11/2000 — — — E0.018 — — — — —

04/23/2000 — — — E0.083 — — — — —

05/05/2000 — — — E0.053 — — — — —

05/17/2000 — — — E0.056 — — — — —

05/29/2000 E0.005 — — 0.312 — — — — E0.005

06/10/2000 — — — E0.117 — — — — —

06/29/2000 — — — E0.052 — — — — —

07/11/2000 E0.009 — — 0.277 — — — — E0.005

07/23/2000 — — — E0.112 — — — — —

08/04/2000 E0.017 — — 0.207 — — — — —

08/16/2000 — — — 0.541 — — — — —

08/28/2000 E0.032 — — 1.21 — — — — E0.066

09/09/2000 E0.006 — — 0.236 — — — — E0.016

09/21/2000 — — — E0.078 — — — — —

10/03/2000 E0.055 — E0.006 1.07 — — — — E0.013

11/08/2000 E0.002 — — 0.229 — — — — —

11/20/2000 — — — 0.178 — — — — E0.011

12/02/2000 — — — 0.289 — — — — E0.009

12/14/2000 — — — E0.096 — — — — —

12/26/2000 — — — E0.055 — — — — —

Table 17A 197
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methyl tertbutyl ether 

(MTBE)

3-Chloro1-propene

4-Methyl-2-

pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropyl 

ether 

(DIPE)

Methyl 

acrylonitrile

2-Butanone 

(methyl ethyl 

ketone)

01/07/2001 — — — E0.038 — — — — —

01/19/2001 — — — E0.149 — — — — —

01/31/2001 NA NA NA NA NA NA NA NA NA

02/12/2001 — — — E0.109 — — — — —

02/24/2001 — — — E0.127 — — — — —

03/08/2001 NA NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA NA

04/01/2001 — — — E0.111 — — — — —

04/13/2001 E0.028 — — 0.428 E0.005 — — — —

04/13/2001 E0.028 — — 0.428 E0.005 — — — —

04/25/2001 — — — E0.161 — — — — —

05/07/2001 — — — 0.224 — — — — —

05/19/2001 — — — E0.073 — — — — —

05/31/2001 — — — E0.093 — — — — —

06/12/2001 E0.022 — — 0.412 — — — — —

06/24/2001 — — — 0.178 — — — — —

07/05/2001 — — — E0.035 — — — — —

07/16/2001 — — — 0.319 — — — — —

08/08/2001 — — — 0.181 — — — — —

08/23/2001 — — — 0.184 — — — — —

09/16/2001 — — — E0.131 — — — — —

09/28/2001 — — — 0.219 — — — — —

198  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methyl 

acrylate

Tetrahydrofuran

1,2-Dibromo-3-

chloropropane 

(DBCP)

m- and pXylene

1,2,3,5-

Tetra

methylbenzene

1,2,4,5-

TetramethylbenzeneMethyl 

acetate

2-Methyl2-butanol 

(tert-Amyl 

alcohol)

2-Methyl2-propanol 

(tert-Butyl 

alcohol)

10/02/1999* NA NA NA NA NA NA NA NA NA

10/13/1999 — — — E0.003 — — — — —

10/26/1999 — — — E0.004 — — — — —

11/07/1999 — — — E0.003 — — — — —

11/19/1999 — — — — — — — — —

12/13/1999 — — — E0.004 — — — — E0.003

12/25/1999 — — — E0.002 — — — — —

01/06/2000 — — — E0.002 — — — — —

01/18/2000 — — — E0.005 — — — — E0.004

01/30/2000 — — — E0.005 — — — — E0.002

02/11/2000 — — — E0.002 — — — — —

03/18/2000 — — — — — — — — —

04/11/2000 — — — — — — — — —

04/23/2000 — — — — — — — — —

05/05/2000 — — — — — — — — —

05/17/2000 — — — — — — — — —

05/29/2000 — — — E0.001 — — — — E0.003

06/10/2000 — — — — — — — — E0.001

06/29/2000 — — — — — — — — —

07/11/2000 — — — — — — — — —

07/23/2000 — — — — — — — — —

08/04/2000 — — — E0.001 — — — — —

08/16/2000 — — — E0.001 — — — — —

08/28/2000 — — — E0.003 — — — — —

09/09/2000 — — — E0.001 — — — — —

09/21/2000 — — — — — — — — —

10/03/2000 — E0.003 — E0.004 — — — — E0.051

11/08/2000 — — — E0.002 — — — — —

11/20/2000 — — — E0.012 — — — — —

12/02/2000 — E0.044 — E0.008 — — — — —

12/14/2000 — — — E0.003 — — — — —

12/26/2000 — — — E0.003 — — — — —

Table 17A 199
Table 17A. Quality-control analytical cartridge travel blank results for volatile organic compounds (VOC) with high breakthrough 

volumes for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance

blank is 5.0 liters. Many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental samples collected on 

10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sampling data lost; oC, degrees Celsius; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methyl 

acrylate

Tetrahydrofuran

1,2-Dibromo-3-

chloropropane 

(DBCP)

m- and pXylene

1,2,3,5-

Tetra

methylbenzene

1,2,4,5-

TetramethylbenzeneMethyl 

acetate

2-Methyl2-butanol 

(tert-Amyl 

alcohol)

2-Methyl2-propanol 

(tert-Butyl 

alcohol)

01/07/2001 — — — E0.005 — — — — —

01/19/2001 — — — E0.006 — — — — —

01/31/2001 NA NA NA NA NA NA NA NA NA

02/12/2001 — — — E0.001 — — — — —

02/24/2001 — — — E0.003 — — — — —

03/08/2001 NA NA NA NA NA NA NA NA NA

03/20/2001 NA NA NA NA NA NA NA NA NA

04/01/2001 — — — E0.002 — — — — —

04/13/2001 — — — E0.003 — — — — E0.006

04/13/2001 — — — E0.003 — — — — E0.006

04/25/2001 — — — E0.002 — — — — —

05/07/2001 — — — E0.032 — — — — —

05/19/2001 — — — E0.002 — — — — —

05/31/2001 — — — E0.002 — — — — —

06/12/2001 — — — — — — — — —

06/24/2001 — — — E0.002 — — — — —

07/05/2001 — — — — — — — — —

07/16/2001 — — — E0.002 — — — — —

08/08/2001 — — — E0.002 — — — — —

08/23/2001 — — — E0.002 — — — — —

09/16/2001 — — — E0.002 — — — — —

09/28/2001 — — — E0.004 — — — — —

200 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17B 201

Sampling 

date

(mm/dd/yyyy)

Spike analysis 

date

(mm/dd/yyyy)

Dibromomethane

BromodichloromethaneCarbon

 tetrachloride

1,2-DichloroethaneBromform 

(Tribromomethane)

DibromochloromethaneChloroform 

(Trichloromethane)

10/02/1999* 10/07/1999* NA NA NA NA NA NA NA

10/13/1999 10/21/1999 88.1 71.6 115 94.9 97.3 80.7 88.4

10/26/1999 10/28/1999 94.3 104 103 97.3 112 106 98.5

11/07/1999 11/15/1999 103 108 110 102 112 105 104

11/19/1999 11/29/1999 100 98.0 98.7 96.2 96.0 99.5 95.7

12/13/1999 12/16/1999 102 102 102 101 105 101 101

12/25/1999, 01/06/2000 01/13/2000 97.5 100 104 101 99.7 101 98.0

01/18/2000 01/24/2000 100 101 80 84.6 93.3 102 89.0

01/30/2000 02/03/2000 95.1 103 108 103 108 126 99.9

02/11/2000 02/17/2000 106 107 110 103 114 110 108

03/18/2000 03/23/2000 102 91.9 107 105 69.8 84.9 99.0

04/11/2000, 04/23/2000 04/25/2000 97.0 102 108 99.4 104 105 91.3

05/05/2000, 05/17/2000 05/18/2000 96.9 111 105 103 114 111 109

05/29/2000, 06/10/2000 06/12/2000 102 105 110 104 104 105 107

06/29/2000, 07/11/2000 07/17/2000 89.5 97.6 78.8 97.8 85.2 86.6 79.7

07/23/2000, 08/04/2000 08/07/2000 99.6 94.9 89.3 86.8 95.3 96.8 93.5

08/16/2000, 08/28/2000, 

09/09/2000

09/19/2000 96.1 105 112 99.7 119 123 95.6

09/21/2000, 10/03/2000 10/12/2000 85.4 86.1 93.2 84.2 82.3 89.0 85.3

11/08/2000 11/16/2000 95.0 100 103 93.6 109 99.8 92.4

11/20/2000, 12/02/2000 12/07/2000 107 120 128 115 117 117 108

12/14/2000 12/20/2000 NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 01/12/2001 97.0 97.8 92.1 82.5 100 103 84.4

01/19/2001, 01/31/2001 02/06/2001 99.9 111 103 93.5 98.3 120 90.8

02/12/2001, 02/24/2001 03/05/2001 98.9 104 113 95.0 101 104 93.2

03/08/2001, 03/20/2001 03/26/2001 NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 04/24/2001 88.6 98.9 104 91.5 113 102 87.7

04/25/2001, 05/07/2001 05/10/2001 96.8 101 99.8 96.3 97.5 104 94.9

05/19/2001, 05/31/2001 06/07/2001 100 94.3 96.4 96.0 93.0 97.2 103

06/12/2001, 06/24/2001 06/28/2001 85.2 94.0 92.2 90.6 91.9 101 86.6

07/05/2001 07/24/2001 95.4 107 96.1 106 95.4 101 93.5

07/16/2001 08/09/2001 89.0 98.7 95.6 94.0 113 103 89.4

08/08/2001 08/21/2001 89.4 101 75.5 85.8 91.6 104 71.5

08/23/2001 09/12/2001 90.5 96.4 94.0 99.3 91.7 115 76.9

09/16/2001, 09/28/2001 10/10/2001 92.2 99.6 105 96.7 98.6 104 94.5

Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

Toluene Benzene

2-Propenenitrile 

(acrylonitrile)

ChlorobenzeneEthylbenzeneHexachloroethaneMethylene 

chloride

Tetrachloroethene

 (PCE)

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 101 119 105 101 103 133 119 94.8

10/26/1999 99.9 108 90.0 101 102 106 89.5 101

11/07/1999 99.8 115 96.5 102 103 108 102 101

11/19/1999 97.4 109 96.3 96.4 91.8 96.8 91.0 93.8

12/13/1999 96.4 88.6 97.4 95.0 98.3 104 99.4 93.9

12/25/1999, 01/06/2000 99.0 106 96.2 97.0 97.9 109 105 91.0

01/18/2000 107 79.4 93.5 110 103 96.2 88.3 103

01/30/2000 114 96.1 94.6 117 100 115 94.3 110

02/11/2000 101 107 105 103 106 120 111 99.7

03/18/2000 98.1 104 89.1 99.7 98.3 93.8 100 105

04/11/2000, 04/23/2000 99.6 104 95.2 99.5 98.3 106 101 96.4

05/05/2000, 05/17/2000 100 89.3 105 97.7 114 116 109 94.9

05/29/2000, 06/10/2000 98.6 99.2 95.3 101 99.0 106 106 97.0

06/29/2000, 07/11/2000 104 114 107 99.8 107 98.2 109 84.4

07/23/2000, 08/04/2000 101 96.6 102 103 95.6 96.9 88.4 107

08/16/2000, 08/28/2000, 

09/09/2000

112 112 116 116 109 120 112 111

09/21/2000, 10/03/2000 90.8 88.1 90.8 93.1 88.7 89.3 88.9 88.6

11/08/2000 95.8 86.7 96.7 97.2 103 100 97.4 99.3

11/20/2000, 12/02/2000 107 119 125 108 116 105 120 106

12/14/2000 NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 103 92.8 86.2 103 100 101 83.0 97.1

01/19/2001, 01/31/2001 111 124 109 105 91.5 96.9 108 104

02/12/2001, 02/24/2001 95.0 99.0 103 96.3 93.8 101 89.3 91.4

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 04/13/2001 99.1 126 92.2 101 116 117 97.2 94.4

04/25/2001, 05/07/2001 98.5 93.1 99.1 102 93.8 111 108 94.9

05/19/2001, 05/31/2001 99.9 107 108 104 96.2 94.2 87.0 107

06/12/2001, 06/24/2001 96.0 70.8 95.6 101 94.3 100 88.9 95.3

07/05/2001 104 89.3 104 104 111 104 98.2 96.9

07/16/2001 108 96.9 106 105 123 112 91.5 98.4

08/08/2001 123 114 124 124 125 109 80.8 102

08/23/2001 124 106 111 124 106 121 97.3 103

09/16/2001, 09/28/2001 95.7 97.2 108 91.1 96.5 117 112 96.2

202 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

1,1-Dichloroethane1,1-Dichloroethene1,1,1-Trichloroethane1,1,2-Trichloroethane1,1,2,2-Tetrachloroethane1,2-Dichlorobenzene

1,2-Dichloropropane

trans-1,2-

Dichloroethene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 90.7 105 111 85 92.8 110 84.5 116

10/26/1999 91.5 105 101 101 109 102 97.4 101

11/07/1999 101 95.7 104 103 109 100 99.7 102

11/19/1999 95.4 95.6 97.0 97.0 108 88.1 97.5 96.9

12/13/1999 98.8 98.4 98.3 97.5 94.1 94.3 98.5 98.3

12/25/1999, 01/06/2000 99.3 94.7 98.2 99.1 82.2 94.8 100 99.8

01/18/2000 92.7 98.4 83.6 101 87.6 99.7 102 94.7

01/30/2000 96.2 99.7 106 102 106 101 92.4 100

02/11/2000 106 107 103 105 110 108 108 103

03/18/2000 101 99.5 103 103 58.3 94.5 102 104

04/11/2000, 04/23/2000 82.2 81.0 104 100 105 96.6 101 95.8

05/05/2000, 05/17/2000 112 104 103 101 112 110 100 102

05/29/2000, 06/10/2000 101 109 103 102 108 96.3 102 105

06/29/2000, 07/11/2000 91.9 103 82.5 95.5 103 88.7 121 101

07/23/2000, 08/04/2000 90.5 94.9 89.0 98.5 87.4 97.4 99.4 93.6

08/16/2000, 08/28/2000, 

09/09/2000

97.8 99.5 102 112 97.0 108 105 101

09/21/2000, 10/03/2000 91.7 89.4 87.8 88.7 79.5 90.3 90.5 86.9

11/08/2000 97.0 95.3 95.1 97.0 107 108 97.3 94.9

11/20/2000, 12/02/2000 104 113 124 117 106 101 119 113

12/14/2000 NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 85.6 86.7 86.4 100 96.5 99.0 99.8 83.6

01/19/2001, 01/31/2001 92.5 95.6 102 115 101 98.1 107 97.0

02/12/2001, 02/24/2001 96.3 97.9 100 97.0 90.4 91.5 99.6 94.9

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 90.1 89.6 98.5 96.1 107 97.9 95.4 91.0

04/25/2001, 05/07/2001 98.8 100 99.0 98.8 101 99.4 98.3 95.7

05/19/2001, 05/31/2001 100 107 96.9 97.0 94.2 102 96.6 99.5

06/12/2001, 06/24/2001 87.2 90.1 90.0 92.0 89.7 106 93.2 91.1

07/05/2001 102 103 102 99.5 110 107 104 101

07/16/2001 91.6 104 93.9 102 126 110 101 98.8

08/08/2001 83.5 109 83.1 101 96.3 107 115 105

08/23/2001 75.2 91.3 95.1 104 93.1 105 113 101

09/16/2001, 09/28/2001 93.3 98.0 99.1 100 99.4 108 99.3 95.8

Table 17B 203
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

1,2,4-Trichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene

Naphthalene

trans-1,3-

Dichloropropene

cis-1,3-DichloropropeneTrichloroethene 

(TCE)

Hexachlorobutadiene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 117 109 110 117 79.0 77.2 103 109

10/26/1999 109 99.9 103 104 94.3 98.4 97.4 108

11/07/1999 110 102 101 109 100 103 101 105

11/19/1999 95.1 87.7 88 97.4 104 101 84.2 94.8

12/13/1999 96.5 94.7 95.4 95.7 100 99.6 101 95.5

12/25/1999, 01/06/2000 96.8 96.7 95.5 98.5 103 101 104 95.2

01/18/2000 101 102 101 103 99.2 99.9 107 97.7

01/30/2000 110 97.3 98.3 103 115 104 92.4 105

02/11/2000 109 108 108 107 109 102 102 107

03/18/2000 103 95.8 97.1 97.6 93.4 98.0 131 99.9

04/11/2000, 04/23/2000 99.4 97.3 98.4 99.3 112 104 95.1 103

05/05/2000, 05/17/2000 113 113 115 109 105 105 91.1 114

05/29/2000, 06/10/2000 96.1 97.9 97.9 95.2 110 106 93.2 94.3

06/29/2000, 07/11/2000 88.8 93.3 94.2 90.6 114 113 84.9 87.4

07/23/2000, 08/04/2000 102 101 102 102 100 99.0 106 102

08/16/2000, 08/28/2000, 

09/09/2000

108 109 110 110 115 116 101 109

09/21/2000, 10/03/2000 95.4 93.1 91.4 100 93.1 92.8 89.2 93.6

11/08/2000 110 105 109 111 99.3 98.4 99.3 101

11/20/2000, 12/02/2000 112 103 104 120 120 119 119 110

12/14/2000 NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 97.5 98.0 97.7 103 101 103 98.5 96.6

01/19/2001, 01/31/2001 101 99.7 102 108 111 107 103 96.1

02/12/2001, 02/24/2001 122 91.9 90.2 129 113 107 100 111

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 107 99.3 101 130 102 98.7 94.9 111

04/25/2001, 05/07/2001 109 91.8 92.3 101 104 102 93.8 109

05/19/2001, 05/31/2001 125 104 104 128 94.8 96.5 102 105

06/12/2001, 06/24/2001 112 111 111 124 110 100 90.0 103

07/05/2001 101 110 105 115 112 112 92.8 98.4

07/16/2001 116 114 113 117 106 106 96.0 112

08/08/2001 114 116 121 121 131 124 102 107

08/23/2001 124 112 113 129 119 123 99.1 105

09/16/2001, 09/28/2001 117 104 105 117 102 97.0 91.5 118

204  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

Methyl 

methacrylate

1,2,3,4-

Tetramethylbenzene

Ethyl tertbutyl ether 

(ETBE)

tert-Amyl 

methyl ether 

(TAME)

trans-1,4-Dichloro-2-

butene

Ethyl 

methacrylate

Carbon 

disulfide

cis-1,2-

Dichloroethene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 84.7 116 84.5 81.7 90.4 88.8 102 110

10/26/1999 101 105 97.1 96.9 87.8 95.3 76.6 98.4

11/07/1999 89.7 108 101 95.9 98.2 106 97.1 101

11/19/1999 116 97.2 99.8 103 116 119 95.4 97.4

12/13/1999 89.4 97.2 93.9 92.4 104 87.7 90.2 98.3

12/25/1999, 01/06/2000 65.9 101 94.1 92.3 95.4 71.7 111 100

01/18/2000 114 106 101 109 79.9 119 93.5 93.9

01/30/2000 83.5 107 88.5 88.3 105 84.7 90.7 99.3

02/11/2000 90.2 109 86.1 84.3 121 94.3 106 104

03/18/2000 100 97.9 98.6 102 75.8 104 93.2 111

04/11/2000, 04/23/2000 109 100 105 107 119 88.6 92.1 99

05/05/2000, 05/17/2000 126 104 84.5 81.6 94.4 123 109 103

05/29/2000, 06/10/2000 114 99.9 99.5 102 109 117 117 102

06/29/2000, 07/11/2000 112 99.7 90.4 78.4 111 120 92.2 99.7

07/23/2000, 08/04/2000 101 99.9 92.2 89.4 113 106 99.4 93.4

08/16/2000, 08/28/2000, 

09/09/2000

83.3 116 89.0 86.6 90.7 80.4 118 106

09/21/2000, 10/03/2000 114 103 98.5 98.1 98.8 113 93.1 93.1

11/08/2000 92.4 113 92.9 88.8 103 109 97.3 98.9

11/20/2000, 12/02/2000 74.9 125 105 96.6 101 82.0 112 119

12/14/2000 NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 120 98.6 95.0 105 97.7 120 83.0 86.1

01/19/2001. 01/31/2001 72.4 104 94.0 96.8 84.6 84.9 99.8 98.8

02/12/2001, 02/24/2001 111 122 100 103 108 106 93.2 101

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 98.0 114 99.8 101 122 98.1 95.4 93.4

04/25/2001, 05/07/2001 99.5 105 97.9 97.2 97.5 105 99.7 98.2

05/19/2001, 05/31/2001 98.3 135 101 99.1 83.8 103 99.9 99.0

06/12/2001, 06/24/2001 112 111 103 103 115 124 81.9 91.5

07/05/2001 133 122 124 113 113 134 101 101

07/16/2001 124 122 117 118 127 130 97.9 101

08/08/2001 109 112 127 122 126 108 91.2 102

08/23/2001 125 119 92.9 87.1 108 122 95.4 97.8

09/16/2001, 09/28/2001 101 118 93.0 75.8 108 101 108 97.6

Table 17B 205
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

2-Hexanone 

(MBK)

Ethenylbenzene 

(Styrene)

o-Xylene 1,1-Dichloropropene

2,2-Dichloropropane1,3-Dichloropropane

2-Ethyltoluene

1,2,3-Trimethylbenzene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 105 104 104 97.2 113 79.6 103 110

10/26/1999 96.6 103 101 99.0 93 95.3 101 99.8

11/07/1999 104 105 103 101 100 102 104 99.7

11/19/1999 104 94.6 89.3 97.6 108 96.9 89.3 91.5

12/13/1999 95.3 99.8 98.3 100 93.8 99.1 98.6 94.7

12/25/1999, 01/06/2000 106 99.8 97.6 98.6 91.6 100 97.2 97.7

01/18/2000 97.3 105 103 88.5 86.9 104 104 105

01/30/2000 121 105 101 97.9 96.3 113 96.7 98.6

02/11/2000 105 108 107 104 103 103 106 106

03/18/2000 89.4 97.2 99.5 103 120 103 96.5 92.3

04/11/2000, 04/23/2000 103 96.1 97.7 102 129 102 97.1 98.4

05/05/2000, 05/17/2000 101 116 113 99.7 102 100 106 115

05/29/2000, 06/10/2000 109 101 99.1 100 115 102 98.6 96.4

06/29/2000, 07/11/2000 111 103 106 104 80.5 111 103 103

07/23/2000, 08/04/2000 96.0 96.7 97.1 96.8 88.1 104 100 101

08/16/2000, 08/28/2000, 

09/09/2000

121 115 111 106 92.5 114 116 115

09/21/2000, 10/03/2000 87.0 89.1 89.6 90.5 86.1 95.2 93.4 96.9

11/08/2000 100 108 104 98 88.1 96.7 115 115

11/20/2000, 12/02/2000 95.3 115 113 119 112 116 131 116

12/14/2000 NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 92.6 103 97.8 93.7 77.2 101 104 105

01/19/2001, 01/31/2001 127 96.1 99.8 99.0 85.6 115 98.3 107

02/12/2001, 02/24/2001 110 92.0 92.4 96.4 107 100 89.7 91.4

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 95.8 123 109 94.6 92.8 96.9 109 112

04/25/2001, 05/07/2001 119 95.0 93.9 101 102 100 98.2 91.3

05/19/2001, 05/31/2001 94.5 101 98.6 100 102 98.0 103 111

06/12/2001, 06/24/2001 118 98.1 92.2 94.6 102 97.1 101 115

07/05/2001 117 107 109 105 105 110 109 123

07/16/2001 115 126 121 104 90.3 102 126 121

08/08/2001 129 122 115 115 104 116 117 128

08/23/2001 114 113 105 118 90.7 110 112 130

09/16/2001, 09/28/2001 105 95.1 93.3 96.4 89.3 95.7 100 106

206  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

1,2,4-TrimethylbenzeneIsopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-Trimethylbenzene1-Chloro2-methylbenzene1-Chloro-4-

methylbenzene

Bromochloromethane

n-Butylbenzene

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 105 102 102 103 103 104 117 111

10/26/1999 104 103 103 103 101 102 86.0 99.3

11/07/1999 104 104 103 104 102 103 102 102

11/19/1999 90.5 90.4 90.4 90.2 81.1 91.9 106 90.4

12/13/1999 99.2 98.1 101 98.3 97.9 99.4 96.6 94.2

12/25/1999, 01/06/2000 97.8 96.5 98.7 96.5 95.9 95.7 105 98.0

01/18/2000 105 103 105 105 102 107 104 104

01/30/2000 89.1 98.5 99.2 100 97.9 99.1 87.8 102

02/11/2000 106 106 106 107 107 105 113 108

03/18/2000 97.6 98 97.2 97.2 95.2 96.3 96.8 95.0

04/11/2000, 04/23/2000 98.2 101 97.3 98.1 96.4 97.4 83.7 98.6

05/05/2000, 05/17/2000 108 109 111 112 107 106 106 115

05/29/2000, 06/10/2000 98.2 99.6 98.2 99.9 100 101 99.0 98.6

06/29/2000, 07/11/2000 101 101 110 101 108 109 121 108

07/23/2000, 08/04/2000 98.5 96.8 98.2 99.6 97.5 99.4 110 103

08/16/2000, 08/28/2000, 

09/09/2000 

121 115 115 120 110 114 111 112

09/21/2000, 10/03/2000 93.4 92.3 91.2 92 88.5 90.9 96.0 97.0

11/08/2000 116 107 115 116 104 110 98.4 113

11/20/2000, 12/02/2000 123 120 104 123 115 117 98.9 119

12/14/2000 NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 96.8 105 101 102 99.7 102 87.6 103

01/19/2001, 01/31/2001 103 98.6 91.8 92.1 91.0 96.4 91.9 110

02/12/2001, 02/24/2001 91.1 92.8 98.5 91.7 93.4 91.8 101 121

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 124 116 113 115 113 121 78.1 115

04/25/2001, 05/07/2001 95.8 98.6 98.1 96.3 94.7 95.3 96.9 100

05/19/2001, 05/31/2001 107 99.9 102 103 100 101 125 122

06/12/2001, 06/24/2001 103 101 101 103 98.9 101 92.9 115

07/05/2001 111 108 110 108 108 108 105 124

07/16/2001 122 120 129 123 116 120 98.8 118

08/08/2001 124 119 127 118 121 124 97.7 118

08/23/2001 119 108 109 117 110 112 90.2 119

09/16/2001, 09/28/2001 99.3 96.7 97.4 99.2 98.9 99.6 97.7 111

Table 17B 207
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

sec-Butylbenzenetert-Butylbenzene

1-Isopropyl-

4-methylbenzene

1,2,3-Trichloropropane1,1,1,2-Tetrachloroethane1,2,3-Trichlorobenzene1,2-Dibromoethane Methyl tertbutyl ether 

(MTBE)

10/02/1999* NA NA NA NA NA NA NA NA

10/13/1999 103 103 110 99.0 108 118 81.1 94.3

10/26/1999 102 103 100 106 105 108 94.4 98.3

11/07/1999 103 104 101 105 105 106 103 103

11/19/1999 88.8 88.1 92.1 91.7 99.3 98.4 106 98.6

12/13/1999 98.0 97.3 94.9 97.7 98.7 94.9 100 94.9

12/25/1999, 01/06/2000 95.1 96.2 97.6 99.1 101 95.1 98.9 94.5

01/18/2000 103 103 105 101 109 95.9 106 97.1

01/30/2000 92.1 92.4 96.8 98.9 119 103 117 92.4

02/11/2000 105 104 107 109 104 107 104 93.3

03/18/2000 97.4 97.9 95.5 97.2 100 97.1 102 99.1

04/11/2000, 04/23/2000 96.7 97.6 98.4 99.5 105 97.4 115 103

05/05/2000, 05/17/2000 128 107 115 111 98.9 111 98.5 96.5

05/29/2000, 06/10/200 98.9 98.5 98.2 104 103 95.4 106 104

06/29/2000, 07/11/2000 103 97.2 99.5 91.1 87.0 85.7 96.3 82.7

07/23/2000, 08/04/2000 100 100 102 96.1 95.6 102 108 87.5

08/16/2000, 08/28/2000, 

09/09/2000

113 115 115 109 117 105 116 98.0

09/21/2000, 10/03/2000 94.0 92.8 98.1 83.8 91.9 96.8 93.8 95.5

11/08/2000 115 115 117 104 96.3 104 99.3 90.6

11/20/2000, 12/02/2000 131 119 118 115 113 115 115 116

12/14/2000 NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 106 102 102 96.6 99.9 94.9 101 93.3

01/19/2001, 01/31/2001 104 99.4 109 102 111 104 113 96.5

02/12/2001, 02/24/200 92.4 90.2 91.0 89.2 102 124 103 104

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 130 119 114 105 98.5 106 95.0 96.4

04/25/2001, 05/07/2001 101 94.5 92.8 94.4 102 105 100 96.0

05/19/2001, 05/31/2001 104 102 112 99.4 101 128 101 100

06/12/2001, 06/24/2001 101 101 114 92.4 97.8 110 97.4 98.2

07/05/2001 118 96.4 120 96.5 96.9 111 108 115

07/16/2001 123 125 124 111 97.7 113 104 104

08/08/2001 125 118 129 92.4 103 123 116 127

08/23/2001 114 108 126 88.9 113 120 109 97.1

09/16/2001, 09/28/2001 104 94.0 106 101 95.9 114 94.0 88.6

208  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

3-Chloro-1-

propene

4-Methyl-2-

pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropyl 

ether 

(DIPE)

Methyl 

acrylonitrile

2-Butanone 

(methyl 

ethyl 

ketone)

Methyl 

acrylate

10/02/1999* NA NA NA NA NA NA NA NA NA

10/13/1999 99.1 101 139 102 97.3 96.5 111 90.9 93.9

10/26/1999 77.1 98.1 76.4 101 102 102 102 96.2 105

11/07/1999 86.9 98.8 110 104 102 99.0 99.6 102 91.9

11/19/1999 93.5 101 110 88.9 98.1 99.0 94.4 107 117

12/13/1999 88.0 95.8 98.6 94.6 102 97.3 101 97.0 92.8

12/25/1999, 01/06/2000 94.2 104 103 100 102 99.8 104 102 68.1

01/18/2000 101 103 91.4 102 97.7 92.2 98.3 86.9 109

01/30/2000 87.8 114 98.0 95.3 99.1 94.7 100 97.1 86.7

02/11/2000 106 105 108 107 108 104 106 112 95.6

03/18/2000 81.7 94.7 96.5 97.1 105 99.7 100 96.3 99.0

04/11/2000, 04/23/2000 69.8 101 82.4 96.2 99.7 99.7 101 108 117

05/05/2000, 05/17/2000 117 102 110 105 106 102 102 114 137

05/29/2000, 06/10/200 108 104 114 99 107 100 101 111 114

06/29/2000, 07/11/2000 118 113 123 118 110 119 118 101 104

07/23/2000, 08/04/2000 94.9 96.2 97.0 96.2 97.5 94.8 95.3 101 102

08/16/2000, 08/28/2000, 

09/09/2000

90.6 117 89.3 107 107 105 107 121 72.2

09/21/2000, 10/03/2000 102 86.4 89.0 85.4 92.8 92.1 90.9 90.0 106

11/08/2000 88.7 101 91.6 100 99.8 93.1 101 97.5 104

11/20/2000, 12/02/2000 75.7 111 71.4 113 124 117 127 118 76.3

12/14/2000 NA NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 88.2 108 89.2 98.5 91.5 94.2 86.4 83.9 95.5

01/19/2001, 01/31/2001 82.8 131 103 94.7 103 97.3 107 101 72.0

02/12/2001, 02/24/200 103 102 82.8 91.0 79.5 99.9 106 99.5 110

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 56.6 116 69.8 104 94.0 99.4 95.7 101 96.1

04/25/2001, 05/07/2001 91.4 110 92.0 90.8 100 103 98.3 99.6 96.3

05/19/2001, 05/31/2001 125 97.1 121 99.3 107 98.3 96.4 102 103

06/12/2001, 06/24/2001 110 110 77.5 95.5 94.4 102 102 100 105

07/05/2001 128 126 101 110 111 115 119 113 124

07/16/2001 104 116 107 116 102 110 110 107 107

08/08/2001 126 131 106 120 124 127 129 125 134

08/23/2001 123 116 101 110 106 124 123 97.9 116

09/16/2001, 09/28/2001 88.8 107 86.2 97.9 94.0 96.9 101 96.6 102

Table 17B 209
Table 17B. Quality-control analytical results for cartridge spike for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Values are given in percent recovery. Sample volume for quality-assurance spike is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel blanks and environmental 

samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, sample data lost; NA, not 

analyzed]

Sampling 

date

(mm/dd/yyyy)

Tetrahydrofuran

1,2-Dibromo-3-

chloro

propane 

(DBCP)

m- and pXylene

1,2,3,5-

Tetramethylbenzene

1,2,4,5-

TetramethylbenzeneMethyl 

acetate

2-Methyl2-butanol 

(tert-Amyl 

alcohol)

2-Methyl2-propanol 

(tert-Butyl 

alcohol)

tert-Butyl 

alcohol

10/02/1999* NA NA NA NA NA NA NA NA NA

10/13/1999 75.1 125 102 116 116 93.9 54.7 69.2 69.2

10/26/1999 100 117 103 105 102 98.0 91.4 96.6 96.6

11/07/1999 107 107 103 105 105 93.2 106 73.8 73.8

11/19/1999 99.3 131 90.6 95.0 94.9 130 114 108 108

12/13/1999 108 95.6 99.0 97.3 96.9 89.6 82.2 85.6 85.6

12/25/1999, 01/06/2000 101 86.5 98.1 97.2 99.0 80.2 63.4 73.8 73.8

01/18/2000 90.9 96.5 104 104 108 92.0 110 109 109

01/30/2000 95.8 115 104 102 103 76.7 59.9 80.2 80.2

02/11/2000 108 129 107 107 108 86.2 68.3 83.3 83.3

03/18/2000 104 83.3 98.0 96.8 97.5 108 108 113 113

04/11/2000, 04/23/2000 99.5 122 98.2 96.5 98.5 124 111 112 112

05/05/2000, 05/17/2000 104 130 117 97.2 102 127 122 128 128

05/29/2000, 06/10/200 108 114 101 97.8 99.8 95.1 112 113 113

06/29/2000, 07/11/2000 108 102 108 98.4 99.0 74.1 78.6 78.4 78.4

07/23/2000, 08/04/2000 96.9 82.8 91.8 103 95.5 96.7 95.7 92.1 92.1

08/16/2000, 08/28/2000, 

09/09/2000

112 108 114 118 120 50.4 79.9 75.5 75.5

09/21/2000, 10/03/2000 92.4 89.9 87.7 101 99.3 86.1 105 104 104

11/08/2000 102 107 125 115 114 97.6 98.3 101 101

11/20/2000, 12/02/2000 123 103 115 123 124 73.2 73.9 70.7 70.7

12/14/2000 NA NA NA NA NA NA NA NA NA

12/26/2000, 01/07/2001 93.7 89.8 99.2 101 103 88.6 113 100 100

01/19/2001, 01/31/2001 96.7 110 89.6 100 103 87.4 75.6 81.2 81.2

02/12/2001, 02/24/200 105 128 92.0 121 123 125 130 130 130

03/08/2001, 03/20/2001 NA NA NA NA NA NA NA NA NA

04/01/2001, 04/13/2001 99.4 95.9 106 106 122 71.6 101 94.1 94.1

04/25/2001, 05/07/2001 97.7 114 93.0 105 115 74.7 91.6 82.6 82.6

05/19/2001, 05/31/2001 110 108 98.2 134 134 112 122 115 115

06/12/2001, 06/24/2001 103 116 127 125 126 90.8 118 107 107

07/05/2001 115 120 99.2 124 124 132 150 131 131

07/16/2001 110 125 121 123 123 96.3 126 118 118

08/08/2001 123 122 121 109 129 111 112 129 129

08/23/2001 96.6 130 111 120 121 98.5 94.5 108 108

09/16/2001, 09/28/2001 100 114 94.6 114 117 75.1 78.0 72.4 72.4

210 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C 211

Sampling

date

(mm/dd/yyyy)

Blank analysis

date

(mm/dd/yyyy)

Dibromo

methane

BromodichloromethaneCarbon 

tetrachloride

1,2-DichloroethaneBromoform 

(Tribromomethane)

Dibromo

chloromethane

Chloroform 

(Trichloromethane)

10/02/1999 10/07/1999 — — — — — — —

10/13/1999 10/21/1999 — — — — — — —

10/26/1999 10/28/1999 — — — — — — —

11/07/1999 11/15/1999 — — — — — — —

11/19/1999 11/29/1999 — — — — — — —

12/13/1999 12/16/1999 — — — — — — —

12/25/1999 01/13/2000 — — — — — — —

01/06/2000 01/13/2000 — — — — — — —

01/18/2000 01/24/2000 — — — — — — —

01/30/2000 02/03/2000 — — — — — — —

02/11/2000 02/17/2000 — — — — — — —

03/18/2000 03/23/2000 — — — — — — —

04/11/2000 04/25/2000 — — — — — — —

04/23/2000 04/25/2000 — — — — — — —

05/05/2000 05/18/2000 — — — — — — —

05/17/2000 05/18/2000 — — — — — — —

05/29/2000 06/12/2000 — — — — — — —

06/10/2000 06/12/2000 — — — — — — —

06/29/2000 07/17/2000 — — — — — — —

07/11/2000 07/17/2000 — — — — — — —

07/23/2000 08/07/2000 NA NA NA NA NA NA NA

08/04/2000 08/07/2000 — — — — — — —

08/16/2000 09/19/2000 — — — — — — —

08/28/2000 09/19/2000 — — — — — — —

09/09/2000 09/19/2000 — — — — — — —

09/21/2000 10/12/2000 — — — — — — —

10/03/2000 10/12/2000 — — — — — — —

11/08/2000 11/16/2000 — — — — — — —

11/20/2000 12/07/2000 — — — — — — —

12/02/2000 12/07/2000 — — — — — — —

12/14/2000 12/20/2000 — — — — — — —

12/26/2000 01/12/2001 — — — — — — —

Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

Blank analysis

date

(mm/dd/yyyy)

Dibromo

methane

BromodichloromethaneCarbon 

tetrachloride

1,2-DichloroethaneBromoform 

(Tribromomethane)

Dibromo

chloromethane

Chloroform 

(Trichloromethane)

01/07/2001 01/12/2001 — — — — — — —

01/19/2001 02/06/2001 — — — — — — —

01/31/2001 02/06/2001 — — — — — — —

02/12/2001 03/05/2001 — — — — — — —

02/24/2001 03/05/2001 — — — — — — —

03/08/2001 03/26/2001 — — — — — — —

03/20/2001 03/26/2001 NA NA NA NA NA NA NA

04/01/2001 04/24/2001 — — — — — — —

04/13/2001 04/24/2001 — — — — — — —

04/25/2001 05/10/2001 — — — — — — —

05/07/2001 05/10/2001 — — — — — — —

05/19/2001 06/07/2001 — — — — — — —

05/31/2001 06/07/2001 — — — — — — —

06/12/2001 06/28/2001 — — — — — — —

06/24/2001 06/28/2001 — — — — — — —

07/05/2001 07/24/2001 — — — — — — —

07/16/2001 08/09/2001 — — — — — — —

08/08/2001 08/21/2001 — — — — — — —

08/23/2001 09/12/2001 — — — — — — —

09/16/2001 10/10/2001 — — — — — — —

09/28/2001 10/10/2001 — — — — — — —

212 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

Toluene Benzene

2-Propenenitrile 

(Acrylonitrile)

ChlorobenzeneEthylbenzene

Hexachloroethane

Methylene 

chloride

Tetrachloroethene 

(PCE)

10/02/1999 E0.001 E0.083 — — — — — —

10/13/1999 E0.004 E0.058 E0.022 — E0.001 — — —

10/26/1999 E0.018 E0.057 — — E0.002 — E0.0109 —

11/07/1999 E0.007 0.120 — — E0.001 — — —

11/19/1999 E0.004 E0.052 E0.011 — E0.001 — E0.003 —

12/13/1999 E0.003 0.150 — — — — — —

12/25/1999 E0.005 E0.084 — — — — E0.004 —

01/06/2000 E0.001 E0.029 E0.008 — — — — —

01/18/2000 E0.002 E0.066 — — — — — —

01/30/2000 E0.004 E0.030 — — E0.001 — — —

02/11/2000 E0.004 E0.058 — — — — — —

03/18/2000 E0.002 E0.056 E0.001 — — — — —

04/11/2000 E0.002 E0.027 — — — — — —

04/23/2000 E0.001 E0.032 — — — — — —

05/05/2000 E0.001 E0.024 — — — — — —

05/17/2000 — E0.040 — — — — — —

05/29/2000 E0.001 E0.051 — — — — — —

06/10/2000 E0.003 E0.044 — — — — — —

06/29/2000 — E0.062 — — — — — —

07/11/2000 E0.003 E0.066 — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 E0.001 E0.044 — — — — — —

08/16/2000 E0.003 E0.034 — — — — — —

08/28/2000 E0.002 0.127 — — — — — —

09/09/2000 E0.003 E0.034 — — — — — —

09/21/2000 E0.002 E0.039 — — — — — —

10/03/2000 E0.003 E0.100 — — — — — —

11/08/2000 E0.006 E0.068 — E0.001 E0.001 — — —

11/20/2000 E0.014 0.338 — E0.001 E0.002 — — —

12/02/2000 E0.002 E0.037 — — — — — —

12/14/2000 E0.044 0.132 E0.016 E0.001 E0.008 — — —

12/26/2000 E0.008 E0.099 — — E0.001 — — —

Table 17C 213
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

Toluene Benzene

2-Propenenitrile 

(Acrylonitrile)

ChlorobenzeneEthylbenzene

Hexachloroethane

Methylene 

chloride

Tetrachloroethene 

(PCE)

01/07/2001 E0.015 0.142 — E0.001 E0.002 — — —

01/19/2001 E0.009 0.151 — — E0.002 — — —

01/31/2001 E0.009 0.144 — — — — — —

02/12/2001 E0.007 E0.098 — — — — — —

02/24/2001 E0.006 E0.088 — — E0.001 — — —

03/08/2001 E0.010 0.114 — — E0.001 — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 E0.003 E0.025 — — — — — —

04/13/2001 E0.004 E0.080 — E0.001 E0.001 — — —

04/25/2001 E0.015 0.169 E0.013 — E0.003 — — —

05/07/2001 E0.002 E0.043 — — — — — —

05/19/2001 E0.004 E0.076 — — — — — E0.009

05/31/2001 E0.003 0.226 — — — — — —

06/12/2001 E0.003 E0.002 — — — — — —

06/24/2001 E0.015 E0.058 — E0.006 E0.002 — — —

07/05/2001 E0.003 0.209 — — — — — —

07/16/2001 E0.002 E0.044 — — — — — —

08/08/2001 0.004 0.098 — — — — — —

08/23/2001 E0.002 E0.107 — — — — — —

09/16/2001 E0.005 E0.068 — — E0.001 — — —

09/28/2001 — — — — — — — —

214  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

1,1-

Dichloroethane

1,1-

Dichloroethene

1,1,1-

Trichloroethane

1,1,2-

Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-

Dichlorobenzene

1,2-

Dichloropropane

trans-1,2-

Dichloroethene

10/02/1999 — — — — — — — —

10/13/1999 — — — — — — — —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17C 215
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

1,1-

Dichloroethane

1,1-

Dichloroethene

1,1,1-

Trichloroethane

1,1,2-

Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-

Dichlorobenzene

1,2-

Dichloropropane

trans-1,2-

Dichloroethene

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

216  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

1,2,4-Trichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene

Naphthalene

trans-1,3-

Dichloropropene

cis-1,3-

Dichloropropene

Trichloroethene 

(TCE)

Hexachlorobutadiene

10/02/1999 — — — — — — — —

10/13/1999 — — — E0.001 — — — —

10/26/1999 — — — E0.001 — — — —

11/07/1999 — — — E0.001 — — — —

11/19/1999 — — — E0.001 — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — E0.001 — — — —

03/18/2000 — — — E0.001 — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 — — — E0.001 — — — —

08/16/2000 — — — E0.001 — — — —

08/28/2000 — — — E0.001 — — — —

09/09/2000 — — — E0.001 — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — E0.001 — — — —

11/08/2000 — — — E0.003 — — — —

11/20/2000 — — — E0.002 — — — —

12/02/2000 — — — E0.003 — — — —

12/14/2000 — — — E0.009 — — — —

12/26/2000 — — — E0.002 — — — —

Table 17C 217
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

1,2,4-Trichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene

Naphthalene

trans-1,3-

Dichloropropene

cis-1,3-

Dichloropropene

Trichloroethene 

(TCE)

Hexachlorobutadiene

01/07/2001 — — — E0.001 — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — E0.001 — — — —

03/08/2001 — — — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — E0.001 — — — —

04/13/2001 — — — E0.001 — — — —

04/25/2001 — — — E0.004 — — — —

05/07/2001 — — — E0.001 — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — E0.003 — — — —

07/05/2001 — — — E0.002 — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

218  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

Methyl 

methacrylate

1,2,3,4-

Tetramethylbenzene

Ethyl tertbutyl ether 

(ETBE)

tert-Amyl 

methyl 

ether 

(TAME)

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

Carbon 

disulfide

cis-1,2-

Dichloroethene

10/02/1999 — — — — — — — —

10/13/1999 — — — — — — E0.001 —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — E0.003 —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — E0.005 —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 — — — — — — E0.004 —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — — — — — — E0.009 —

12/14/2000 — — — — — — E0.004 —

12/26/2000 — — — — — — — —

Table 17C 219
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

Methyl 

methacrylate

1,2,3,4-

Tetramethylbenzene

Ethyl tertbutyl ether 

(ETBE)

tert-Amyl 

methyl 

ether 

(TAME)

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

Carbon 

disulfide

cis-1,2-

Dichloroethene

01/07/2001 — — — — — — E0.015 —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — E0.002 —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — E0.003 —

04/25/2001 — — — — — — E0.007 —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — E0.001 —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — E0.015 —

07/05/2001 — — — — — — E0.005 —

07/16/2001 — — — — — — E0.001 —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — E0.013 —

09/28/2001 — — — — — — — —

220 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

2-Hexanone 

(MBK)

Ethenylbenzene 

(styrene)

oXylene1,1-Dichloropropene2,2-Dichloropropane1,3-Dichloropropane2-Ethyltoluene

1,2,3-Trimethylbenzene

10/02/1999 — — — — — — — —

10/13/1999 — E0.001 E0.001 — — — — —

10/26/1999 — E0.001 E0.003 — — — — —

11/07/1999 — E0.001 E0.001 — — — — —

11/19/1999 — E0.001 — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — E0.001 — — — — —

02/11/2000 — — E0.001 — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — E0.002 E0.001 — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — E0.001 — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — E0.001 E0.002 — — — — —

12/14/2000 — E0.012 E0.008 — — — — —

12/26/2000 — E0.001 E0.001 — — — — —

Table 17C 221
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

2-Hexanone 

(MBK)

Ethenylbenzene 

(styrene)

oXylene1,1-Dichloropropene2,2-Dichloropropane1,3-Dichloropropane2-Ethyltoluene

1,2,3-Trimethylbenzene

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — E0.001 — — — — —

03/08/2001 — — E0.001 — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — E0.001 — — — — — —

04/25/2001 — E0.018 E0.001 — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — E0.013 E0.007 — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — E0.002 E0.003 — — — — —

09/28/2001 — — — — — — — —

222 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

1,2,4-TrimethylbenzeneIsopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-Trimethylbenzene1-Chloro-2-

methylbenzene

1-Chloro-4-

methylbenzene

Bromochloromethane

n-Butylbenzene

10/02/1999 — — — — — — — —

10/13/1999 — — — — — — — —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17C 223
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

1,2,4-TrimethylbenzeneIsopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-Trimethylbenzene1-Chloro-2-

methylbenzene

1-Chloro-4-

methylbenzene

Bromochloromethane

n-Butylbenzene

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

224  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

secButylbenzenetertButylbenzene1-Isopropyl-

4-methylbenzene

1,2,3-Trichloropropane

1,1,1,2-

Tetrachloroethane

1,2,3-Trichlorobenzene1,2-Dibromoethane Methyl tertbutyl ether 

(MTBE)

10/02/1999 — — — — — — — —

10/13/1999 — — — — — — — —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17C 225
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

secButylbenzenetertButylbenzene1-Isopropyl-

4-methylbenzene

1,2,3-Trichloropropane

1,1,1,2-

Tetrachloroethane

1,2,3-Trichlorobenzene1,2-Dibromoethane Methyl tertbutyl ether 

(MTBE)

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

226  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

3-Chloro-1-

propene

4-Methyl-2-

pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropylether 

(DIPE)

Methyl 

acrylonitrile

2-Butanone 

(Methyl 

ethyl 

ketone)

Methyl 

acrylate

10/02/1999 — — E0.008 — — — — — —

10/13/1999 — — E0.083 — — — — — —

10/26/1999 — — E0.106 — — — — — —

11/07/1999 — — E0.048 — — — — — —

11/19/1999 — — E0.049 — — — — — —

12/13/1999 — — E0.035 — — — — — —

12/25/1999 — — E0.103 — — — — — —

01/06/2000 — — E0.029 — — — — — —

01/18/2000 — — E0.041 — — — — — —

01/30/2000 — — E0.023 — — — — — —

02/11/2000 — — E0.034 — — — — — —

03/18/2000 — — E0.014 — — — — — —

04/11/2000 — — E0.037 — — — — — —

04/23/2000 — — E0.020 — — — — — —

05/05/2000 — — E0.008 — — — — — —

05/17/2000 — — E0.012 — — — — — —

05/29/2000 — — E0.056 — — — — — —

06/10/2000 — — E0.071 — — — — — —

06/29/2000 — — E0.033 — — — — — —

07/11/2000 — — E0.024 — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA NA

08/04/2000 — — E0.049 — — — — — —

08/16/2000 — — E0.066 — — — — — —

08/28/2000 — — E0.046 — — — — — —

09/09/2000 — — E0.066 — — — — — —

09/21/2000 — — E0.104 — — — — — —

10/03/2000 — — E0.051 — — — — — —

11/08/2000 — — E0.060 — — — — — —

11/20/2000 — — E0.079 — — — — — —

12/02/2000 — — E0.093 — — — — — —

12/14/2000 — — 0.272 — — — — — —

12/26/2000 — — E0.046 — — — — — —

Table 17C 227
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

3-Chloro-1-

propene

4-Methyl-2-

pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropylether 

(DIPE)

Methyl 

acrylonitrile

2-Butanone 

(Methyl 

ethyl 

ketone)

Methyl 

acrylate

01/07/2001 — — E0.062 — — — — — —

01/19/2001 — — E0.037 — — — — — —

01/31/2001 — — E0.136 — — — — — —

02/12/2001 — — E0.083 — — — — — —

02/24/2001 — — E0.030 — — — — — —

03/08/2001 — — E0.122 — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA NA

04/01/2001 — — E0.036 — — — — — —

04/13/2001 — — E0.057 — — — — — —

04/25/2001 — — 0.252 — — — — — —

05/07/2001 — — E0.078 — — — — — —

05/19/2001 — — E0.065 — — — — — —

05/31/2001 — — E0.042 — — — — — —

06/12/2001 — — E0.081 — — — — — —

06/24/2001 — — E0.089 — — — — — —

07/05/2001 — — E0.105 — — — — — —

07/16/2001 — — E0.090 — — — — — —

08/08/2001 — — 0.143 — — — — — —

08/23/2001 — — E0.090 — — — — — —

09/16/2001 — — E0.073 — — — — — —

09/28/2001 — — — — — — — — —

228  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

Tetrahydrofuran

1,2-Dibromo-

3-chloropropane 

(DBCP)

m- and pXylene

1,2,3,5-

Tetramethylbenzene

1,2,4,5-

TetramethylbenzeneMethyl 

acetate

2-Methyl2-butanol 

(tert-Amyl 

alcohol)

2-Methyl-2-propanol (tert-Butyl alcohol)

10/02/1999 — — — — — — — —

10/13/1999 — — E0.001 — — — — —

10/26/1999 — — E0.005 — — — — —

11/07/1999 — — E0.003 — — — — —

11/19/1999 — — E0.001 — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — E0.001 — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 NA NA NA NA NA NA NA NA

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — E0.001 — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — E0.001 — — — — —

11/08/2000 — — E0.003 — — — — —

11/20/2000 — — E0.003 — — — — —

12/02/2000 — — E0.002 — — — — —

12/14/2000 — — E0.022 — — — — —

12/26/2000 — — E0.003 — — — — —

Table 17C 229
Table 17C. Quality-control analytical cartridge lot blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; E, 

estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling

date

(mm/dd/yyyy)

Tetrahydrofuran

1,2-Dibromo-

3-chloropropane 

(DBCP)

m- and pXylene

1,2,3,5-

Tetramethylbenzene

1,2,4,5-

TetramethylbenzeneMethyl 

acetate

2-Methyl2-butanol 

(tert-Amyl 

alcohol)

2-Methyl-2-propanol (tert-Butyl alcohol)

01/07/2001 — — E0.005 — — — — —

01/19/2001 — — E0.005 — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — E0.001 — — — — —

03/08/2001 — — E0.002 — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — E0.001 — — — — —

04/25/2001 — — E0.017 — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — E0.001 — — — — —

05/31/2001 — — E0.001 — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — E0.008 — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — E0.004 — — — — —

09/28/2001 — — — — — — — —

230 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D 231

Sampling 

date

(mm/dd/yyyy)

Blank analysis

 date

(mm/dd/yyyy)

Dibromomethane

BromodichloromethaneCarbon 

tetrachloride

1,2-DichloroethaneBromoform

(Tribromomethane)

DibromochloromethaneChloroform

(Trichloromethane)

10/02/1999* 10/07/1999* NA NA NA NA NA NA NA

10/13/1999 10/21/1999 — — — — — — —

10/26/1999 10/28/1999 — — — — — — —

11/07/1999 11/15/1999 — — — — — — —

11/19/1999 11/29/1999 — — — — — — —

12/13/1999 12/16/1999 — — — — — — —

12/25/1999 01/13/2000 — — — — — — —

01/06/2000 01/13/2000 — — — — — — —

01/18/2000 01/24/2000 — — — — — — —

01/30/2000 02/03/2000 — — — — — — —

02/11/2000 02/17/2000 — — — — — — —

03/18/2000 03/23/2000 — — — — — — —

04/11/2000 04/25/2000 — — — — — — —

04/23/2000 04/25/2000 — — — — — — —

05/05/2000 05/18/2000 — — — — — — —

05/17/2000 05/18/2000 — — — — — — —

05/29/2000 06/12/2000 — — — — — — —

06/10/2000 06/12/2000 — — — — — — —

06/29/2000 07/17/2000 — — — — — — —

07/11/2000 07/17/2000 — — — — — — —

07/23/2000 08/07/2000 — — — — — — —

08/04/2000 08/07/2000 — — — — — — —

08/16/2000 09/19/2000 — — — — — — —

08/28/2000 09/19/2000 — — — — — — —

09/09/2000 09/19/2000 — — — — — — —

09/21/2000 10/12/2000 — — — — — — —

10/03/2000 10/12/2000 — — — — — — —

11/08/2000 11/16/2000 — — — — — — —

11/20/2000 12/07/2000 — — — — — — —

12/02/2000 12/07/2000 — — — — — — —

12/14/2000 12/20/2000 — — — — — — —

12/26/2000 01/12/2001 — — — — — — —

Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes 

for the Sweetwater Reservoir air sampling site, San Diego County, California.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]
Sampling 

date

(mm/dd/yyyy)

Blank analysis

 date

(mm/dd/yyyy)

Dibromomethane

BromodichloromethaneCarbon 

tetrachloride

1,2-DichloroethaneBromoform

(Tribromomethane)

DibromochloromethaneChloroform

(Trichloromethane)

01/07/2001 01/12/2001 — — — — — — —

01/19/2001 02/06/2001 — — — — — — —

01/31/2001 02/06/2001 — — — — — — —

02/12/2001 03/05/2001 — — — — — — —

02/24/2001 03/05/2001 — — — — — — —

03/08/2001 03/26/2001 — — — — — — —

03/20/2001 03/26/2001 NA NA NA NA NA NA NA

04/01/2001 04/24/2001 — — — — — — —

04/13/2001 04/24/2001 — — — — — — —

04/25/2001 05/10/2001 — — — — — — —

05/07/2001 05/10/2001 — — — — — — —

05/19/2001 06/07/2001 — — — — — — —

05/31/2001 06/07/2001 — — — — — — —

06/12/2001 06/28/2001 — — — — — — —

06/24/2001 06/28/2001 — — — — — — —

07/05/2001 07/24/2001 — — — — — — —

07/16/2001 08/09/2001 — — — — — — —

08/08/2001 08/21/2001 — — — — — — —

08/23/2001 09/12/2001 — — — — — — —

09/16/2001 10/10/2001 — — — — — — —

09/28/2001 10/10/2001 — — — — — — —

Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

232 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Toluene Benzene

2-Propenenitrile

(acrylonitrile)

ChlorobenzeneEthylbenzeneHexachloroethaneMethylene 

chloride

Tetrachloroethene

 (PCE)

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 E0.012 0.595 E0.049 — E0.001 — E0.004 —

10/26/1999 E0.019 E0.088 E0.010 — E0.002 — E0.021 —

11/07/1999 E0.006 E0.050 E0.005 — E0.001 — E0.002 —

11/19/1999 E0.001 E0.038 E0.006 — — — E0.005 —

12/13/1999 E0.004 0.139 — — — — E0.005 —

12/25/1999 E0.008 0.130 — — E0.001 — E0.007 E0.002

01/06/2000 E0.003 E0.050 E0.011 — — — E0.002 —

01/18/2000 E0.011 E0.053 E0.003 — E0.001 — E0.005 —

01/30/2000 E0.007 E0.029 — — — — E0.004 —

02/11/2000 E0.005 E0.031 — — — — — —

03/18/2000 E0.001 E0.027 E0.002 — — — — —

04/11/2000 E0.002 E0.041 — — — — — —

04/23/2000 E0.002 E0.028 — — — — — —

05/05/2000 E0.001 E0.029 — — — — — —

05/17/2000 E0.001 E0.087 — — — — — —

05/29/2000 E0.018 E0.071 E0.010 — E0.001 — — E0.006

06/10/2000 E0.004 E0.101 — — — — — E0.004

06/29/2000 E0.002 E0.048 E0.004 E0.001 — — — —

07/11/2000 E0.006 E0.031 — E0.001 — — — E0.002

07/23/2000 E0.003 E0.002 — — — — — —

08/04/2000 E0.005 E0.045 — — — — — —

08/16/2000 E0.004 E0.093 — — — — — —

08/28/2000 E0.003 E0.047 — — — — — —

09/09/2000 E0.003 E0.087 — — — — — —

09/21/2000 E0.003 E0.073 — — — — — —

10/03/2000 E0.002 E0.053 — — — — — —

11/08/2000 E0.004 0.124 — — — — — —

11/20/2000 E0.035 0.185 E0.029 E0.001 E0.005 — E0.007 —

12/02/2000 E0.027 E0.111 E0.011 E0.001 E0.003 — — —

12/14/2000 E0.008 0.119 — — E0.002 — — —

12/26/2000 E0.010 E0.068 — — E0.002 — — —

Table 17D 233
Sampling 

date

(mm/dd/yyyy)

Toluene Benzene

2-Propenenitrile

(acrylonitrile)

ChlorobenzeneEthylbenzeneHexachloroethaneMethylene 

chloride

Tetrachloroethene

 (PCE)

01/07/2001 E0.010 0.191 — — E0.002 — — —

01/19/2001 E0.018 0.114 — — E0.003 — — —

01/31/2001 E0.033 0.139 — — E0.006 — — —

02/12/2001 E0.024 0.199 __ __ E0.002 __ __ __

02/24/2001 E0.008 E0.109 — — E0.001 — — —

03/08/2001 E0.009 E0.082 — — E0.001 — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 E0.007 E0.113 — — E0.001 — — —

04/13/2001 E0.004 E0.074 — E0.001 E0.001 — — —

04/25/2001 E0.011 0.191 E0.009 — E0.001 — — —

05/07/2001 E0.010 0.419 E0.011 — E0.001 — — —

05/19/2001 E0.004 E0.013 — — — — — E0.007

05/31/2001 E0.004 E0.029 — — — — — —

06/12/2001 E0.003 E0.042 — — — — — —

06/24/2001 E0.001 E0.031 — E0.003 — — — —

07/05/2001 E0.004 E0.084 — — — — — —

07/16/2001 E0.003 E0.069 — — E0.001 — — —

08/08/2001 E0.002 E0.013 — E0.001 E0.007 — — —

08/23/2001 E0.009 0.256 — — — — — —

09/16/2001 E0.021 0.151 — — E0.003 — — —

09/28/2001 E0.009 E0.124 — — E0.001 — — —

Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

234  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,1-Dichloroethane1,1-Dichloroethene1,1,1-Trichloroethane1,1,2-Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-Dichlorobenzene1,2-Dichloropropanetrans-1,2-

Dichloroethene

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 — — — — — — — —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — 0.214 — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 — E0.054 — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17D 235
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,1-Dichloroethane1,1-Dichloroethene1,1,1-Trichloroethane1,1,2-Trichloroethane

1,1,2,2-

Tetrachloroethane

1,2-Dichlorobenzene1,2-Dichloropropanetrans-1,2-

Dichloroethene

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

236  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,2,4-Trichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene

Naphthalene

trans-1,3-

Dichloropropene

cis-1,3-DichloropropeneTrichloroethene

 (TCE)

Hexachlorobutadiene

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 — — — E0.001 — — — —

10/26/1999 — — — E0.004 — — — —

11/07/1999 — — — E0.003 — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — E0.001 — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — E0.003 — — — —

01/18/2000 — — — E0.003 — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — E0.001 — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — E0.001 — — E0.005 —

06/10/2000 — — — E0.001 — — E0.002 —

06/29/2000 — — — E0.001 — — — —

07/11/2000 — — — E0.001 — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — — E0.001 — — — —

08/16/2000 — — — E0.001 — — — —

08/28/2000 — — — E0.001 — — — —

09/09/2000 — — — E0.001 — — — —

09/21/2000 — — — E0.001 — — — —

10/03/2000 — — — E0.001 — — — —

11/08/2000 — — — E0.001 — — — —

11/20/2000 — — — E0.005 — — — —

12/02/2000 — — — E0.009 — — — —

12/14/2000 — — — E0.007 — — — —

12/26/2000 — — — E0.002 — — — —

Table 17D 237
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,2,4-Trichlorobenzene1,3-Dichlorobenzene1,4-Dichlorobenzene

Naphthalene

trans-1,3-

Dichloropropene

cis-1,3-DichloropropeneTrichloroethene

 (TCE)

Hexachlorobutadiene

01/07/2001 — — — E0.003 — — — —

01/19/2001 — — — E0.005 — — — —

01/31/2001 — — — E0.002 — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — E0.001 — — — —

03/08/2001 — — — E0.002 — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — E0.002 — — — —

04/13/2001 — — — E0.002 — — — —

04/25/2001 — — — E0.008 — — — —

05/07/2001 — — — E0.008 — — — —

05/19/2001 — — — E0.001 — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — E0.001 — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — E0.003 — — — —

07/16/2001 — — — E0.002 — — — —

08/08/2001 — — — E0.005 — — — —

08/23/2001 — — — E0.001 — — — —

09/16/2001 — — — E0.007 — — — —

09/28/2001 — — — E0.002 — — — —

238  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methyl 

methacrylate

1,2,3,4-

Tetramethylbenzene

Ethyl tertbutyl 

ether 

(ETBE)

tert-Amyl 

methyl ether 

(TAME)

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

Carbon 

disulfide

cis-1,2-Dichloroethene

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 — — — — — — E0.003 —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — E0.002 —

06/10/2000 — — — — — — E0.006 —

06/29/2000 — — — — — — E0.006 —

07/11/2000 — — — — — — E0.009 —

07/23/2000 — — — — — — E0.001 —

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — E0.005 —

10/03/2000 — — — — — — E0.004 —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — E0.006 —

12/02/2000 — — — — — — E0.002 —

12/14/2000 — — — — — — E0.010 —

12/26/2000 — — — — — — — —

Table 17D 239
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Methyl 

methacrylate

1,2,3,4-

Tetramethylbenzene

Ethyl tertbutyl 

ether 

(ETBE)

tert-Amyl 

methyl ether 

(TAME)

trans-1,4-

Dichloro-2-

butene

Ethyl 

methacrylate

Carbon 

disulfide

cis-1,2-Dichloroethene

01/07/2001 — — — — — — E0.049 —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — E0.018 —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — E0.003 —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — E0.008 —

04/13/2001 — — — — — — E0.005 —

04/25/2001 — — — — — — E0.012 —

05/07/2001 — — — — — — E0.017 —

05/19/2001 — — — — — — E0.005 —

05/31/2001 — — — — — — E0.006 —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — E0.023 —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — E0.026 —

09/28/2001 — — — — — — — —

240 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

2-Hexanone 

(MBK)

Ethenylbenzene

(styrene)

o-Xylene

1,1-Dichloropropene2,2-Di

chloropropane

1,3-Dichloropropane

2-Ethyltoluene

1,2,3-Trimethylbenzene

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 — E0.001 E0.001 — — — — —

10/26/1999 — E0.002 E0.003 — — — — —

11/07/1999 — E0.001 E0.001 — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — E0.001 — — — — — —

12/25/1999 — — E0.001 — — — — —

01/06/2000 — E0.001 — — — — — —

01/18/2000 — E0.001 E0.002 — — — — —

01/30/2000 — — E0.001 — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — E0.001 — — — — — —

04/23/2000 — E0.001 — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — E0.001 — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — E0.002 — — — — — —

07/11/2000 — E0.001 — — — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — E0.005 E0.003 — — — — —

12/02/2000 — E0.002 E0.004 — — — — —

12/14/2000 — E0.001 E0.002 — — — — —

12/26/2000 — — E0.002 — — — — —

Table 17D 241
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

2-Hexanone 

(MBK)

Ethenylbenzene

(styrene)

o-Xylene

1,1-Dichloropropene2,2-Di

chloropropane

1,3-Dichloropropane

2-Ethyltoluene

1,2,3-Trimethylbenzene

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — E0.005 E0.002 — — — — —

02/24/2001 — — E0.001 — — — — —

03/08/2001 — E0.001 E0.001 — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — E0.002 E0.001 — — — — —

04/13/2001 — E0.001 E0.002 — — — — —

04/25/2001 — E0.002 E0.001 — — — — —

05/07/2001 — E0.003 E0.001 — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — E0.001 — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — E0.012 E0.013 — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — E0.004 E0.001 — — — — —

09/28/2001 — — E0.001 — — — — —

242 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,2,4-TrimethylbenzeneIsopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-Trimethylbenzene1-Chloro-2-

methylbenzene

1-Chloro-4-

methylbenzene

Bromochloromethane

n-Butylbenzene

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 E0.001 — — — — — — —

10/26/1999 E0.002 — — — — — — —

11/07/1999 E0.001 — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 E0.001 — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 E0.007 — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17D 243
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

1,2,4-TrimethylbenzeneIsopropylbenzene 

(Cumene)

n-Propylbenzene

1,3,5-Trimethylbenzene1-Chloro-2-

methylbenzene

1-Chloro-4-

methylbenzene

Bromochloromethane

n-Butylbenzene

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — — — — —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

244  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

sec-Butylbenzenetert-Butylbenzene

1-Isopropyl-

4-methylbenzene

1,2,3-Trichloropropane1,1,1,2-Tetrachloroethane1,2,3-Trichlorobenzene1,2-Dibromoethane Methyl tertbutyl ether 

(MTBE)

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 — — — — — — — —

10/26/1999 — — — — — — — —

11/07/1999 — — — — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — — — — — — —

12/25/1999 — — — — — — — —

01/06/2000 — — — — — — — —

01/18/2000 — — — — — — — —

01/30/2000 — — — — — — — —

02/11/2000 — — — — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — — — — — — —

06/10/2000 — — — — — — — —

06/29/2000 — — — — — — — —

07/11/2000 — — — — — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — — — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — — — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — — — — — — —

12/02/2000 — — — — — — — —

12/14/2000 — — — — — — — —

12/26/2000 — — — — — — — —

Table 17D 245
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

sec-Butylbenzenetert-Butylbenzene

1-Isopropyl-

4-methylbenzene

1,2,3-Trichloropropane1,1,1,2-Tetrachloroethane1,2,3-Trichlorobenzene1,2-Dibromoethane Methyl tertbutyl ether 

(MTBE)

01/07/2001 — — — — — — — —

01/19/2001 — — — — — — — —

01/31/2001 — — — — — — — —

02/12/2001 — — — — E0.009 — — —

02/24/2001 — — — — — — — —

03/08/2001 — — — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — — — — — — —

04/13/2001 — — — — — — — —

04/25/2001 — — — — — — — —

05/07/2001 — — — — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — — — — — — —

06/12/2001 — — — — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — — — — — — —

08/08/2001 — — — — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — — — — — — —

09/28/2001 — — — — — — — —

246  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

3-Chloro-1-

propene

4-Methyl-2-

pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropyl ether 

(DIPE)

Methyl 

acrylonitrile

2-Butanone 

(methyl ethyl 

ketone)

Methyl 

acrylate

10/02/1999 NA NA NA NA NA NA NA NA NA

10/13/1999 — — E0.075 — — — — — —

10/26/1999 — — 0.225 — — — — — —

11/07/1999 — — E0.087 — — — — — —

11/19/1999 — — E0.044 — — — — — —

12/13/1999 — — E0.057 — — — — — —

12/25/1999 — — E0.055 — — — — — —

01/06/2000 — — E0.046 — — — — — —

01/18/2000 — — E0.073 — — — — — —

01/30/2000 — — E0.040 — — — — — —

02/11/2000 — — E0.065 — — — — — —

03/18/2000 — — 0.165 — — — — — —

04/11/2000 — — E0.017 — — — — — —

04/23/2000 — — E0.020 — — — — — —

05/05/2000 — — E0.067 — — — — — —

05/17/2000 — — E0.015 — — — — — —

05/29/2000 — — 0.475 — — — — — —

06/10/2000 — — 0.237 — — — — — —

06/29/2000 — — E0.076 — — — — — —

07/11/2000 — — E0.076 — — — — — —

07/23/2000 — — 0.202 — — — — — —

08/04/2000 — — 0.463 — — — — — —

08/16/2000 — — 0.163 — — — — — —

08/28/2000 — — E0.112 — — — — — —

09/09/2000 — — E0.127 — — — — — —

09/21/2000 — — E0.076 — — — — — —

10/03/2000 — — E0.042 — — — — — —

11/08/2000 — — E0.046 — — — — — —

11/20/2000 — — 0.248 — — — — E0.020 —

12/02/2000 — — E0.133 — — — — E0.002 —

12/14/2000 — — E0.126 — — — — — —

12/26/2000 — — E0.032 — — — — — —

Table 17D 247
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

3-Chloro-1-

propene

4-Methyl-2-

pentanone 

(MIBK)

Acetone Bromobenzene

Diethyl 

ether

Diisopropyl ether 

(DIPE)

Methyl 

acrylonitrile

2-Butanone 

(methyl ethyl 

ketone)

Methyl 

acrylate

01/07/2001 — — E0.058 — — — — — —

01/19/2001 — — E0.144 — — — — — —

01/31/2001 — — E0.144 — — — — — —

02/12/2001 — — 0.245 — — — — — —

02/24/2001 — — E0.117 — — — — — —

03/08/2001 — — E0.123 — — — — — —

03/20/2001 NA NA NA NA NA NA NA NA NA

04/01/2001 — — E0.080 — — — — — —

04/13/2001 — — E0.050 — — — — — —

04/25/2001 — — E0.141 — — — — — —

05/07/2001 — — 0.192 — — — — — —

05/19/2001 — — E0.082 — — — — — —

05/31/2001 — — E0.048 — — — — — —

06/12/2001 — — E0.090 — — — — — —

06/24/2001 — — 0.213 — — — — — —

07/05/2001 — — E0.074 — — — — — —

07/16/2001 — — E0.165 — — — — — —

08/08/2001 — — — — — — — — —

08/23/2001 — — E0.126 — — — — — —

09/16/2001 — — 0.318 — — — — — —

09/28/2001 — — 0.078 — — — — — —

248  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; 

*, sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Tetrahydrofuran

1,2-Dibromo-

3-chloropropane

(DBCP)

m- and pXylene

1,2,3,5-Tetramethylbenzene

1,2,4,5-

TetramethylbenzeneMethyl 

acetate

2-Methyl2-butanol 

(tert-Amyl 

alcohol)

2-Methyl-2-

propanol (tertButyl alcohol)

10/02/1999 NA NA NA NA NA NA NA NA

10/13/1999 — — E0.003 — — — — —

10/26/1999 — — E0.007 — — — — —

11/07/1999 — — E0.002 — — — — —

11/19/1999 — — — — — — — —

12/13/1999 — — E0.001 — — — — —

12/25/1999 — — E0.002 — — — — —

01/06/2000 — — E0.001 — — — — —

01/18/2000 — — E0.004 — — — — —

01/30/2000 — — E0.003 — — — — —

02/11/2000 — — E0.001 — — — — —

03/18/2000 — — — — — — — —

04/11/2000 — — — — — — — —

04/23/2000 — — — — — — — —

05/05/2000 — — — — — — — —

05/17/2000 — — — — — — — —

05/29/2000 — — E0.001 — — — — E0.004

06/10/2000 — — — — — — — —

06/29/2000 — — E0.001 — — — — —

07/11/2000 — — E0.001 — — — — —

07/23/2000 — — — — — — — —

08/04/2000 — — E0.001 — — — — —

08/16/2000 — — — — — — — —

08/28/2000 — — — — — — — —

09/09/2000 — — — — — — — —

09/21/2000 — — E0.001 — — — — —

10/03/2000 — — — — — — — —

11/08/2000 — — — — — — — —

11/20/2000 — — E0.009 — — — — —

12/02/2000 — — E0.012 — — — — —

12/14/2000 — — E0.005 — — — — —

12/26/2000 — — E0.003 — — — — —

Table 17D 249
Table 17D. Quality-control analytical laboratory blank results for volatile organic compounds (VOC) with high breakthrough volumes for 

the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.

[The site identification number is 324141117001601. Concentrations are given in parts per billion by volume (ppbv). Sample volume for quality-assurance blank 

is 5.0 liters. Samples processed at 20.0 degrees Celsius and 760 torr; many samples were frozen at the laboratory and analyzed on the same day. Data for travel 

blanks and environmental samples collected on 10/27/2000 were not used because samples were contaminated during transport. mm/dd/yyyy, month/day/year; *, 

sample data lost; E, estimated value; NA, not analyzed; —, compound was not detected at a concentration above laboratory reporting level]

Sampling 

date

(mm/dd/yyyy)

Tetrahydrofuran

1,2-Dibromo-

3-chloropropane

(DBCP)

m- and pXylene

1,2,3,5-Tetramethylbenzene

1,2,4,5-

TetramethylbenzeneMethyl 

acetate

2-Methyl2-butanol 

(tert-Amyl 

alcohol)

2-Methyl-2-

propanol (tertButyl alcohol)

01/07/2001 — — E0.006 — — — — —

01/19/2001 — — E0.006 — — — — —

01/31/2001 — — E0.014 — — — — —

02/12/2001 — — E0.005 — — — — —

02/24/2001 — — E0.002 — — — — —

03/08/2001 — — E0.003 — — — — —

03/20/2001 NA NA NA NA NA NA NA NA

04/01/2001 — — E0.003 — — — — —

04/13/2001 — — E0.002 — — — — —

04/25/2001 — — E0.001 — — — — —

05/07/2001 — — E0.002 — — — — —

05/19/2001 — — — — — — — —

05/31/2001 — — E0.001 — — — — —

06/12/2001 — — E0.001 — — — — —

06/24/2001 — — — — — — — —

07/05/2001 — — — — — — — —

07/16/2001 — — E0.001 — — — — —

08/08/2001 — — E0.009 — — — — —

08/23/2001 — — — — — — — —

09/16/2001 — — E0.006 — — — — —

09/28/2001 — — E0.005 — — — — —

250 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 18A. Quality-control laboratory reagent blank results for polycyclic aromatic hydrocarbon compound concentrations for the Sweetwater Reservoir air sampling site, San 

Diego County, California.[Concentrations are given in nanograms per cubic meter (ng/m3), assuming a 315 m3 air volume, unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds were extracted using soxhlet. E, estimated value; GFF, glass fiber filter; NA, not analyzed; PUF, polyurethane foam; SIM, selective ion monitoring; —, compound was not detected at concentration above laboratory reporting level]

Type Set Number Extract split SIM or scan Phenanthrene (64422) Anthracene (64231) 2-Methyl- anthracene (64206) 4,5-Methylene- phenanthrene (64218)

C1-178 Isomers, 

methylated 

phenanthrene/

anthracenes

(64253)

1-Methylphenanthrene

(64193)

1 PUF 99.190 No SIM 0.084 NA 0.170 NA 0.034 0.0081 PUF 99.348 No SIM 0.140 — 0.004 0.032 0.012 0.004Solvent only 99.348 No SIM 0.004 — — — — —1 PUF 00.222 No SIM E0.060 — E0.023 — — —

Type

C2-178 Isomers, 

C2-alkylated 

phenanthrene/

anthracenes

(64258)

Fluoranthene

(64335)

Pyrene

(64437)

C3-178 Isomers, 

C3-alkylated 

phenanthrene/

anthracenes

(64263)

C4-178 Isomers, 

C4-alkylated 

phenanthrene/

anthracenes

(64268)

1-Methylpyrene

(64194)

C1-202 Isomers, 

methylated 

fluoranthene/

pyrenes

(64254)

C2-202 Isomers, 

C2-alkylated 

fluoranthene/

pyrenes

(64259)

C5-178 I

somers,

C5-alkylated 

phenanthrene/

anthracenes

(64273)

1 PUF NA 0.032 0.023 NA NA NA NA NA NA1 PUF 0.032 0.014 0.005 — — — — — —Solvent only — 0.003 0.001 — — — — — —1 PUF — — — — — — — — —

Table 18A 251
Table 18A. Quality-control laboratory reagent blank results for polycyclic aromatic hydrocarbon compound concentrations for the Sweetwater Reservoir air sampling site, San 

Diego County, California—Continued.[Concentrations are given in nanograms per cubic meter (ng/m3), assuming a 315 m3 air volume, unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds were extracted using soxhlet. E, estimated value; GFF, glass fiber filter; NA, not analyzed; PUF, polyurethane foam; SIM, selective ion monitoring; —, compound was not detected at concentration above laboratory reporting level]

Type

Benzo(a)-

anthracene

(64237)

Chrysene

(64285)

C3-202 Isomers, 

C3-alkylated 

fluoranthene/

pyrenes

(64264)

C1-228 Isomers, 

methylated 

benzo(a)anthracene/

chrysenes

(64255)

C4-202 Isomers, 

C4-alkylated 

fluoranthene/

pyrenes

(64269)

C5-202 Isomers, 

C5-alkylated 

fluoranthene/

pyrenes

(64274)

C2-228 Isomers, 

C2-alkylated 

benzo(a)-

anthracene/

chrysenes

(64260)

Benzo(

b)fluoranthene

(64238)

Benzo(

k)fluoranthene

(64242)

1 PUF NA NA NA 0.019 NA NA NA NA NA1 PUF

—

—

—

—

—

—

—

—

—

Solvent only

—

—

—

—

—

—

—

—

—

1 PUF

—

—

—

—

—

—

—

—

—

Type

Benzo(e)-

pyrene

(64240)

Benzo(a)-

pyrene

(64238)

Perylene

(64421)

C1-252 Isomers, 

C1-methylated 

benzopyrene/

perylenes

(64256)

C3-228 Isomers, 

C3-alkylated 

benzo(a)anthracene/

chrysenes

(64265)

C2-252 Isomers, 

C2-alkylated 

benzopyrene/

perylenes

(64261)

C4-228 Isomers, 

C4-alkylated 

benzo(a) anthracene/

chrysenes

(64270)

Benzo(ghi)-

perylene

(64241)

Indeno(1,2,3-cd) 

pyrene

(64343)

1 PUF NA NA NA NA NA NA NA 0.053 NA1 PUF

—

—

—

—

—

—

—

—

—

Solvent only

—

—

—

—

—

—

—

—

—

1 PUF

—

—

—

—

—

—

—

—

—

252 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 18A. Quality-control laboratory reagent blank results for polycyclic aromatic hydrocarbon compound concentrations for the Sweetwater Reservoir air sampling site, San 

Diego County, California—Continued.[Concentrations are given in nanograms per cubic meter (ng/m3), assuming a 315 m3 air volume, unless noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds were extracted using soxhlet. E, estimated value; GFF, glass fiber filter; NA, not analyzed; PUF, polyurethane foam; SIM, selective ion monitoring; —, compound was not detected at concentration above laboratory reporting level]

Type

Dibenz(a,h)-

anthracene

(64302)

C3-252 Isomers, 

C3-alkylated 

benzopyrene/

perylenes

(64266)

C4-252 Isomers, 

C4-alkylated 

benzopyrene/

perylenes

(64271)

C5-228 Isomers, 

C5-alkylated 

benzo(a)-

anthracene/

chrysenes

(64275)

C5-252 Isomers, 

C5-alkylated 

benzopyrene/

perylenes

(64276)

Coronene

(64290)

Nitrobenzene-d5

(surrogate)

(90768)

(percent)

2-Fluorobiphenyl

(surrogate)

(90761)

(percent)

Terphenyl-d14

(surrogate)

(90770)

(percent)

1 PUF NA NA NA NA NA NA 69.6 83.7 1051 PUF — — — — — — 50.2 79.2 106Solvent only — — — — — — 45.4 72.6 96.21 PUF — — — — — — 57.6 94.0 113

Table 18A 253
Table 18B. Quality-control laboratory reagent spike results for polycyclic aromatic hydrocarbon compound 

concentrations for the Sweetwater Reservoir air sampling site, San Diego County, California. 

[The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized 

data system (National Water Information System) to uniquely identify a specific constituent or property. The 21 Alkyl isomeric analytes on 

table 6 were not spiked, hence not included in this table. Compounds were extracted using soxhlet. Values are given in percent recovery. E, 

estimated value; NA, not analyzed]

Set number Extract 

split

Phenanthrene

(64422)

Anthracene

(64231)

2-Methylanthracene

(64206)

4,5-Methylenephenanthrene

(64218)

99.190 No 96.3 80.0 87.8 93.3

99.348 No 94.3 51.2 45.1 80.8

00.222 No 108 40.5 35.8 89.2

Set number

1-Methylphenanthrene

(64193)

Fluoranthene

(64335)

Pyrene

(64437)

1-Methylpyrene

(64194)

Benzo(a)-

anthracene

(64237)

Chrysene

(64285)

99.190 93.2 99.8 94.3 NA 96.3 89.9

99.348 89.9 92.3 90.2 92.3 85.6 96.19

00.222 101 92.1 93.1 93.9 58.6 101

Sample

identification

Benzo(b)-

fluoranthene

(64239)

Benzo(k)-

fluoranthene

(64242)

Benzo(e)-

pyrene

(64240)

Benzo(a)-

pyrene

(64238)

Perylene

(64421)

Benzo(ghi)-

perylene

(64241)

99.190 138 99.5 116 93.9 102 96.4

99.348 101 96.3 119 68.6 77.1 98.1

00.222 83.0 57.4 77.1 NA NA 64.6

254  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001

Sample

identification

Indeno(1,2,3-cd)-

pyrene-

(64343)

Debenz(a,h)-

anthracene

(64301)

Coronene

(64290)

Nirtrobenzene-d5

(surrogate)

(90768)

2-Fluorobiphenyl

(surrogate)

(90761)

Terphenyl-d14

(surrogate)

(90770)

99.190 93.8 97.5 117 88.3 90.5 104

99.348 83.1 99.1 99.5 65.8 82.1 109

00.222 25.4 63.4 74.4 60.6 96.2 116
Table 19A 

255

Table 19A. Quality-control laboratory reagent blank results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California.[The site identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3) assuming a 315 m3 air volume, except surrogate compounds are in percent recovered. The 

five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (U.S. Geological Survey) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, ETPC, pebulate and terbacil were not reported during the timeframe of this report. PUF, polyurethane foam; —, compound was not detected at concentration above laboratory reporting level; solvent Lab Blank contains no PUF, only the extraction solvent]

Quality control

 type Set number

2-Chloro-4-isopropylamino-

6-s-triazine

(64203)

Acetochlor

(64225)

Alachlor

(64228)

a-HCH

(64230)

Atrazine

(64233)

Azinphos-methyl

(64234)

Benfluralin

(64236)

PUF Lab Blank 99.190 — — — — — — —PUF Lab Blank 99.348 — — — — — — —Solvent Blank 99.348 — — — — — — —PUF Lab Blank 00.222 — — — — — — —

Quality control 

type

Carbaryl 

(estimated)

(64279)

Carbofuran 

(estimated)

(64281)

Chlorpyrifos

(64283)

Cyanazine

(64292)

DCPA

(Dacthal)

(64296)

Diazinon

(64300)

Dieldrin

(64305)

Dimethoate

(64306)

Disulfoton

(64309)

PUF Lab Blank — — — — — — — — —PUF Lab Blank — — — — — — — — —Solvent Blank — — — — — — — — —PUF Lab Blank — — — — — — — — —
Table 19A. Quality-control laboratory reagent blank results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3) assuming a 315 m3 air volume, except surrogate compounds are in percent recovered. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (U.S. Geological Survey) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, ETPC, pebulate and terbacil were not reported during the timeframe of this report. PUF, polyurethane foam; —, compound was not detected at concentration above laboratory reporting level; solvent Lab Blank contains no PUF, only the extraction solvent]

Quality control 

type

aEndosulfan

(64314)

bEndosulfan

(64315)

Endosulfan 

sulfate

(64316)

Ethalfluralin

(64321)

Ethion

(64322)

Ethoprop

(64324)

Fonofos

(64336)

Lindane

(64353)

Linuron

(64354)

PUF Lab Blank

—

—

—

—

—

—

—

—

—

PUF Lab Blank

—

—

—

—

—

—

—

—

—

Solvent Blank

—

—

—

—

—

—

—

—

—

PUF Lab Blank

—

—

—

—

—

—

—

—

—

Quality control 

type

Malathion

(64356)

Methyl 

parathion

(64386)

Metolachlor

(64361)

Metribuzin

(64362)

Molinate

(64364)

Napropamide

(64368)

p,p’-DDE

(64380)

Parathion

(64385)

PUF Lab Blank

—

—

—

—

—

—

—

—

PUF Lab Blank

—

—

—

—

—

—

—

—

Solvent Blank

—

—

—

—

—

—

—

—

PUF Lab Blank

—

—

—

—

—

—

—

—

256  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 19A. Quality-control laboratory reagent blank results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Concentrations are given in nanograms per cubic meter (ng/m3) assuming a 315 m3 air volume, except surrogate compounds are in percent recovered. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (U.S. Geological Survey) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethylaniline, butylate, ETPC, pebulate and terbacil were not reported during the timeframe of this report. PUF, polyurethane foam; —, compound was not detected at concentration above laboratory reporting level; solvent Lab Blank contains no PUF, only the extraction solvent]

Quality control 

type

Pendimethalin

(64418)

cis-Permethrin

(64288)

Phorate

(64424)

Prometon

(64430)

Pronamide

(82676) Propachlor (64432) Propanil (64433) Propargite (64434) Simazine (64438)

PUF Lab Blank — — — — — — — — —PUF Lab Blank — — — — — — — — —Solvent Blank — — — — — — — — —PUF Lab Blank — — — — — — — — —

Quality control 

type

Tebuthiuron

(64443)

Terbufos

(64448)

Thiobencarb

(64451)

Triallate

(64456)

Trifluralin

(64461)

Diazinon-d10

(surrogate)

(percent)

a-HCH-d6

(surrogate)

(percent)

PUF Lab Blank — — — — — 77.6 61.4PUF Lab Blank — — — — — 76.5 61.0Solvent Blank — — — — — 69.1 62.6PUF Lab Blank — — — — — 74.3 69.6

Table 19A 257
Quality 

control 

type

Set 

number

2-Chloro-4-

isopropylamino-6-amino-s-triazine

(64203)

Acetochlor

(64225)

Alachlor

(64228)

a-HCH

(64230)

Atrazine

(64233)

Azinphosmethyl

(64234)

Benfluralin

(64236)

Carbaryl 

(estimated)

(64279)

Carbofuran 

(estimated)

(64281)

Chlorpyrifos

(64283)

Cyanazine

(64292)

1 PUF spike 99.190 79.7 139 151 102 92.0 89.9 66.9 102 98.4 95.8 1371 PUF spike 99.348 90.4 78.4 77.2 130 75.8 214 20.9 216 180 79.8 99.41 PUF spike 00.222 79.4 98.4 107 74.9 91.1 114 42.7 109 98.3 88.5 114

Table 19B. Quality-control laboratory reagent spike results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California.[The site identification number is 324141117001601. Values are given in percent recovery. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethyllaniline, butylate, EPTC, pedulate and terbacil were not reported during the time frame of this report. PUF, polyurethane foam; NA, not analyzed]

Quality control 

type

DCPA

(Dacthal)

(64296)

Diazinon

(64300)

Dieldrin

(64305)

Disulfoton

(64309)

aEndosulfan

(64314) 

bEndosulfan

(64315) 

Endosulfan 

sulfate

(64316)

Ethalfluralin

(64321)

Ethion

(64322)

Ethoprop

(64324)

Fonofos

(64336)

Lindane

(64353)

1 PUF 74.7 104 173 62.5 154 87.6 92.4 76.8 89.9 78.5 109 84.81 PUF 70.7 72.5 105 14.0 86.8 90.8 88.0 26.4 104.0 73.8 76.0 71.91 PUF 80.1 99.8 96.8 0.0 91.5 67.4 77.1 29.8 90.1 69.7 73.4 75.0

258  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 19B 

259

Table 19B. Quality-control laboratory reagent spike results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2001 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[The site identification number is 324141117001601. Values are given in percent recovery. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Compounds 2,6-diethyllaniline, butylate, EPTC, pedulate and terbacil were not reported during the time frame of this report. PUF, polyurethane foam; NA, not analyzed]

Quality 

control 

type

Linuron

(64354)

Malathion

(64356)

Methyl 

parathion

(64386)

Metolachlor

(64361)

Metribuzin

(64362)

Molinate

(64364)

Napropamide

(64368)

p,p’-DDE

(64380)

Parathion

(64385)

Pendimethalin

(64418)

cis-Permethrin

(64288)

Phorate

(64424)

1 PUF 175 97.8 194 105.0 88.1 80.8 160 99.9 95.4 78.2 113 84.81 PUF 107 91.8 56.0 85.4 80.8 70.5 109 87.6 44.9 26.3 92.3 25.81 PUF 153 105 68.6 87.8 71.4 109 89.3 90.8 54.4 42.6 78.1 0.0

Quality 

control 

type

Prometon

(64430)

Pronamide 

(82676)

Propachlor

(64432)

Propanil

(64433)

Propargite 

(64434)

Simazine

(64438)

Tebuthiuron

(64443)

Terbufos

(64448)

Thiobencarb

(64451)

Triallate

(64456)

Trifluralin

(64461)

Diazinond10

(surrogate)

aHCH-d6

(surrogate)

1 PUF 82.8 100 128 94.1 136 81.5 65.5 65.9 106 104 67.5 104 75.01 PUF 34.1 83.0 85.0 106 133 103 57.4 29.2 84.3 75.2 19.0 80.0 65.01 PUF 73.9 77.4 106 121 79.8 95.0 53.7 0.0 89.2 86.1 40.0 82.0 52.0
Table 20A. Quality-control laboratory reagent blank results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory Schedule 

2002 for the Sweetwater Reservoir air sampling site, San Diego County, California.[Concentrations are given in nanograms per cubic meter, assuming a 1/m3 air volume, unless otherwise noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; PUF, polyurethane foam; —, compound was not detected at concentration above laboratory reporting level] 

Quality 

control 

type

Set 

number

1,4-

Naphthaquinone

(64189)

2-(4-tertButyl

phenoxy)-

cyclohexanol

(64196)

2,5-Dichloroaniline

(64198)

2-AminoNisopropylbenzamide

(64201)

2-Chloro2,6-diethylacetanilide

(64202)

2-Ethyl-

6-methylaniline

(64204)

3-Trifluoromethylaniline

(64213)

3,4-Dichloroaniline

(64208)

3,5-Dichloroaniline

(64209)

4,4-Dichlorobenzophenone

(64214)

PUF lab blank 99.190

—

—

—

—

—

—

—

—

—

—

PUF lab blank 99.348

—

—

—

—

—

—

—

—

—

—

Solvent onlyblank 99.348

—

—

—

—

—

—

—

—

—

—

PUF lab blank 00.222

—

—

—

—

—

—

—

—

—

—

Quality 

control 

type

4-Chloro 2-

methyl phenol

(64215)

4-Chlorophenyl 

methyl sulfone

(64216)

Azinphosmethyl

oxygen analog

(64235)

Bifenthrin

(64247)

Cycloate

(64203)

Cyfluthrin

(64294)

lCyhalothrin

(64352)

Cypermethrin

(64295)

Dimethoate

(64306)

E-Dimethomorph

(64307)

Z-Dimethomorph 

(64308)

PUF lab blank

—

—

—

—

—

—

—

—

—

—

—

PUF lab blank

—

—

—

—

—

—

—

—

—

—

—

Solvent onlyblank

—

—

—

—

—

—

—

—

—

—

—

PUF lab blank

—

—

—

—

—

—

—

—

—

—

—

260 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 20A. Quality-control laboratory reagent blank results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory Schedule 

2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[Concentrations are given in nanograms per cubic meter, assuming a 1/m3 air volume, unless otherwise noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; PUF, polyurethane foam; —, compound was not detected at concentration above laboratory reporting level] 

Quality 

control 

type

Disulfoton 

sulfone

(64310)

aEndosulfan

(64314)

bEndosulfan

(64315)

Endosulfan 

ether

(64313)

Endosulfan 

sulfate

(64316)

Ethion

(64322)

Ethion 

monoxon

(64323)

Fenthion

(64329)

Fenthion 

sulfone

Fenthion 

sulfoxide

(64330)

PUF lab blank — — — — — — — — — —PUF lab blank — — — — — — — — — —Solvent onlyblank — — — — — — — — — —PUF lab blank — — — — — — — — — —

Quality control 

type

Fenthion 

sulfone

oxygen 

analog

Flumetralin

(64334)

Fonofos 

oxygen 

analog

(64337)

Iprodione

(64345)

Isofenphos

(64348)

Malaoxon

(64335)

Methidathion

(64359)

Myclobutanil

(64365)

Oxyfluorfen

(64378)

O-Ethyl-O-methyl-Spropyl phosphorothioate

(64376)

PUF lab blank — — — — — — — — — —PUF lab blank — — — — — — — — — —Solvent onlyblank — — — — — — — — — —PUF lab blank — — — — — — — — — —

Table 20A 261
Table 20A. Quality-control laboratory reagent blank results for pesticide concentrations using modified U.S. Geological Survey National Water Quality Laboratory Schedule 

2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[Concentrations are given in nanograms per cubic meter, assuming a 1/m3 air volume, unless otherwise noted. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey (USGS) computerized data system (National Water Information System) to uniquely identify a specific constituent or property. mm/dd/yyyy, month/day/year; PUF, polyurethane foam; —, compound was not detected at concentration above laboratory reporting level] 

Quality control 

type

Paraoxonethel

(64383)

Paraoxon

methyl

(64384)

Profenofos

(64429)

Prometryn

(64431)

Propetamphos

(64435)

cisPropiconazole

(64289) 

transPropiconazole

(64455)

Sulfotep

(64439)

Tebupirimphos

(64441)

PUF lab blank

—

—

—

—

—

—

—

—

—

PUF lab blank

—

—

—

—

—

—

—

—

—

Solvent onlyblank

—

—

—

—

—

—

—

—

—

PUF lab blank

—

—

—

—

—

—

—

—

—

Quality 

control 

type

Tebupirimphos 

oxygen analog

(64442)

Tefluthrin

(64444)

Temephos 

(64445)

Terbufos 

oxygen 

analog 

(64448)

Terbufos 

sulfone

Terbuthylazine

(64449)

Tribufos

(64457)

Diazinon-d10

(surrogate)

(percent)

(90762)

a-HCH-d6

(surrogate)

(percent)

(90766)

PUF lab blank

—

—

—

—

—

—

— 71.5 81.3

PUF lab blank

—

—

—

—

—

—

— 70.0 58.2

Solvent onlyblank

—

—

—

—

—

—

— 54.7 53.9

PUF lab blank

—

—

—

—

—

—

— 93.7 80.5

262 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 20B 

263

Quality

 control 

type

Matrix spiked

Set

number

1,4-Naphthoquinone

(estimated)

(64189)

2-(4-tert-Butylphenoxy)-cyclohexanol

(64196)

2,5-Dichloroaniline

(estimated)

(64198)

2-Amino-Nisopropylbenzamide

(estimated)

(64201)

2-Chloro-2,6-

diethylacetanilide

(64202)

2-Ethyl-6-methylaniline

(estimated)

(64204)

3-Trifluoromethylaniline

(estimated)

(64213)

S2002 parents 

only spike

1 PUF 99.190 NS NS NS NS NS NS NS

S2002 degradates 

only spike

1 PUF 99.190 44.8 76.2 62.0 76.6 85.0 59.4 44.3

S2002 spike 1 PUF 99.348 — 68.2 59.9 38.0 79.5 57.6 33.9S2002 spike 1 PUF 00.222 — 76.5 82.3 44.5 92.6 51.8 55.9

Table 20B. Quality-control laboratory reagent spike results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California.[Values are given in percent recovered. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. —, compound was not detected at concentration above reporting level; NS, not spiked; PUF, polyurethane foam]

Quality 

control 

type

3,4-Dichloroaniline

(estimated)

(64208)

3,5-Dichloroaniline

(estimated)

(64209)

4,4-Dichlorobenzophenone

(64214)

4-Chloro-2-methylphenol

(estimated)

(64215)

4-Chlorophenyl 

methyl sulfone

(64216)

Azinphos-methyl 

oxygen analog

(estimated)

(64235)

Bifenthrin

(64247)

Cycloate

(64203)

S2002 parents 

only spike

NS NS NS NS NS NS 110 80.8

S2002 degradates 

only spike

63.4 71.0 94.5 67.6 257 66.8 NS NS

S2002 spike 49.5 58.4 82.4 47.9 92.0 69.9 88.0 72.6S2002 spike 49.1 82.0 103 — 93.2 41.1 97.7 80.9
Table 20B. Quality-control laboratory reagent spike results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[Values are given in percent recovered. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. —, compound was not detected at concentration above reporting level; NS, not spiked; PUF, polyurethane foam]

Quality control 

type

Cyfluthrin

(estimated)

(64294)

l

-

Cyhalothrin

(64352)

Cypermethrin

(estimated)

(64295)

Dimethoate

(64306)

E-Dimethomorph

(64307)

Z-Dimethomorph

(64308)

Disulfoton

 sulfone

(6430)

aEndosulfan

(64314)

b-Endosulfan

(64315)

S2002 parents 

only spike

— 130 134 75.3 56.6

— NS 54.6 59.3

S2002 degradates 

only spike

NS NS NS NS NS NS 97.1 NS NS

S2002 spike 97.8 72.8 95.9 67.6 93.4 75.8 96.1 69.3 108S2002 spike 114 81.8 109 73.9 90.4 61.0 114 E39.7 78.7

Quality

control

 type

Endosulfan

 ether

(64313)

Endosulfan

 sulfate

(64316)

Ethion

(64322)

Ethion

monoxon

(estimated)

(64323)

O-EthylO-methylS-propylphosphorothioate

(64376)

Fenthion

(estimated)

(64329)

Fenthion

sulfone

(estimated)

Fenthion sulfoxide

(estimated)

(64330)

S2002 parents only 

spike

NS 93.2 97.0 NS NS 83.5 27.3 (NS) NS

S2002 degradates 

only spike

67.2 NS NS 90.9 76.0 NS 20.0 94.0

S2002 spike 54.0 70.9 70.4 74.1 63.6 10.6 19.4 143S2002 spike 87.7 66.8 74.8 81.7 87.0

— 17.3 73.0

264  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 20B. Quality-control laboratory reagent spike results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[Values are given in percent recovered. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. —, compound was not detected at concentration above reporting level; NS, not spiked; PUF, polyurethane foam]

Qualitycontrol

 type

Fenthion 

sulfone

oxygen analog

(estimated)

Flumetralin

(estimated)

(64334)

Fonofos oxygen 

analog

(estimated)

(64337)

Iprodione

(estimated)

(64345)

Isofenphos

(64348)

Malaoxon

(64355)

Methidathion

(64359)

Myclobutanil

(64365)

Oxyfluorfen

(64378)

S2002 parents 

only spike

NS 73.8 NS 79.6 89.6 NS 101 90.4 69.7

S2002 degradates 

only spike

69.2 NS 41.8 NS NS 77.0 NS NS NS

S2002 spike 66.6 40.4 39.2 58.4 72.1 53.7 91.3 70.3 65.0S2002 spike 44.9 25.0 49.2 60.1 44.9 84.9 80.4 62.2 69.4

Qualitycontrol

 type

Paraoxonethyl

(64383)

Paraoxon

methyl

(estimated)

(64384)

Profenofos

(64429)

Prometryn

(64431)

Propetamphos

(64435)

cis-Propiconazole

(estimated)

(64289)

trans-Propiconazole

(64455)

Sulfotepp

(64439)

Tebupirimphos

(64441)

S2002 parents 

only spike

NS NS 68.8 87.1 71.2 330 81.2 77.4 78.1

S2002 degradates 

only spike

— 37.2 NS NS NS NS NS NS NS

S2002 spike 54.7 26.6 63.8 58.8 56.6 103 58.2 60.4 68.6S2002 spike 81.2 55.8 68.1 40.2 58.2 120 76.8 74.8 81.8

Table 20B 265
Table 20B. Quality-control laboratory reagent spike results for pesticide concentrations in air using modified U.S. Geological Survey National Water Quality Laboratory 

Schedule 2002 for the Sweetwater Reservoir air sampling site, San Diego County, California—Continued.[Values are given in percent recovered. The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. —, compound was not detected at concentration above reporting level; NS, not spiked; PUF, polyurethane foam]

Quality

 control

 type

Tebupirimphos oxygen 

analog

(64442)

Tefluthrin

(64444)

Temephos

(estimated)

(64445)

Terbufos sulfone

(estimated)

Terbufos oxygen 

analog sulfone

(estimated)

(64448)

Terbuthylazine

(64449)

Tribufos

(64457)

Diazinon-d10

(surrogate)

(90762)

a-HCH-d6

(surrogate)

(90766)

S2002 parents only 

spike

NS 83.0 101 NS NS NS 95.6 73.3 76.6

S2002 degradates only 

spike

86.3 NS NS 144 NS NS

— 68.4 74.6

S2002 spike 73.8 72.7 58.2 88.1 NS 133 73.5 95.2 57.7S2002 spike 91.2 92.0 29.6 65.6 NS 176 74.2 94.0 77.5

266  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 21 267

Pesticide surrogates

Station name

SWR near 

pump tower 

(30-day SPMD 

sample)

SWR near 

pump tower 

(60-day SPMD 

sample)

SWR near 

pump tower

(trip blank)

SWR near

 pump tower

(60-day 

processing 

blank)

Begin date (mm/dd/yyyy) 01/25/2001 01/25/2001 01/25/2001 01/25/2001

Begin time 1000 1000 1005 1010

End date (mm/dd/yyyy) 02/22/2001 03/21/2001 03/21/2001 03/21/2001

End time 1000 1600 1605 1610

a-HCH-d6 90.0 93.0 84.0 77.0

Nonachlorobiphenyl 

(PCB-207)

97.0 92.0 96.0 88.0

Polycyclic aromatic hydrocarbon surrogates

Station name Lab spike Lab blank

SWR near 

pump tower 

(30-day SPMD 

sample)

SWR near 

pump tower 

(60-day SPMD 

sample)

SWR near 

pump tower

(trip blank)

SWR near

 pump tower

(60-day 

processing 

blank)

Begin date 08/27/2001 08/27/2001 01/25/2001 01/25/2001 01/25/2001 01/25/2001

Begin time 1000 1000 1005 1010

End date 02/22/2001 03/21/2001 03/21/2001 03/21/2001

End time 1000 1600 1605 1610

Nitrobenzene-d5 76.3 58.8 48.7 47.8 49.1 58.8

2-Fluorobiphenyl 103 79.4 81.8 83.6 81.1 75.3

Terphenyl-d14 96.3 108 110 88.9 111 110

Table 21. Quality-control analytical results for surrogates added to the semipermeable membrane device in the Sweetwater Reservoir, 

San Diego County, California.

[Time denoted in 24-hour scale; surrogate values reported as percent recovered; mm/dd/yyyy, month/day/year; SWR, Sweetwater Reservoir]
Table 22. Quality-control laboratory reagent blank and reagent spike results for selected wastewater compounds in whole water at the U.S. Geological Survey National Water 

Quality Laboratory, Colorado.[The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Blank values are reported as micrograms per liter (mg/L) unless noted. Spike values are reported as percent recovery. E, estimated value; mm/dd/yyyy, month/day/year; <, compound was not detected at a concentration above laboratory reporting level; NA, not analyzed]

Date

(mm/dd/yyyy) Type

1-Methyl

naphtha

lene

(81696)

1,4-Dichlorobenzene

(34571)

Bis

(2-ethylhexyl)

adipate

(77903)

Bis

(2-ethylhexyl) 

phthalate 

(39100)

2-Methylnaph

thalene

(30194)

2,6-Di-tert-butylphenol

2,6-Di-tert1,4-benzoquinone 2,6-Dimethyl naphthalene

(62805)

01/29/2001 Spike NA 84 E104 E65 NA E60 E71 NA01/29/2001 Blank NA <0.040 <2.000 <2.500 NA <0.150 <0.500 NA04/02/2001 Spike 45 32 NA NA 72 NA NA 4104/02/2001 Blank <0.500 <0.500 NA NA <0.500 NA NA <0.500

Date

(mm/dd/yyyy)

3-bCoprostanol

(62806)

3-Methyl-1(

H)-

indole

(Skatole)

(62807)

3-tert-Butyl-4-

hydroxy

anisole (BHA)

(61702)

4-Cumyl

phenol1

(62808)

4-n-Octyl

phenol

(62809)

4-tertOctylphenol

(62810)

5-Methyl-1Hbenzotriazole

(61944)

Acetophenone

(62811)

01/29/2001 E46 NA E50 NA NA NA 40 8801/29/2001 <0.600 NA <0.120 NA NA NA <0.150 <0.22004/02/2001 E100 66 E24 91 60 22 86 84

04/02/2001 <2.000 <1.000 <5.000 <1.000 <1.000 <1.000 <2.000 <0.500

Date

(mm/dd/yyyy)

Acetylhexamethyl 

tetrahydronaphthalene

(62812)

Anthracene

(34220)

Anthraquinone1

(62813)

Benzophenone

(62814)

Benzo(a)-

pyrene

(34247)

b-Sitosterol1

(62815)

b-Stigmastanol

(61948)

Bisphenol A

(62816)

Bromacil

(30234)

01/29/2001 NA 77 NA NA 69 NA E34 47 NA01/29/2001 NA <0.060 NA NA <0.070 NA <2.000 <0.090 NA

04/02/2001 67 80 66 85 67 E29 E34 77 5804/02/2001 <0.500 <0.500 <0.500 <0.500 E0.100 <2.000 <2.000 <1.000 <0.500

 1See footnote at end of table.

268  Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001
Table 22 

269

Table 22. Quality-control laboratory reagent blank and reagent spike results for selected wastewater compounds in whole water at the U.S. Geological Survey National Water Quality Laboratory, Colorado—Continued.[The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Blank values are reported as micrograms per liter (mg/L) unless noted. Spike values are reported as percent recovery. E, estimated value; mm/dd/yyyy, month/day/year; <, compound was not detected at a concentration above laboratory reporting level; NA, not analyzed]

Date

(mm/dd/yyyy)

Bromoform1

(32104)

Butylated

hydroxy

toluene 

(BHT)

Caffeine

(81436)

Camphor

(62817)

Carbaryl

(39750)

Carbazole

(77571)

cisChlordane Chlorpyrifos (38932) Cholesterol (62818)

01/29/2001 NA E58 75 NA E43 NA 80 74 E50

01/29/2001 NA <0.110 <0.080 NA <0.060 NA < 0.040 <0.020 <1.50004/02/2001 46 NA 82 82 E10 81 NA 61 E7504/02/2001 <0.500 NA <0.500 <0.500 <1.000 <0.500 NA <0.500 <2.000

Date

(mm/dd/yyyy)

Codeine Cotinine

(61945)

Diazinon

(39570)

Dichlorvos

(30218)

Dieldrin Diethyl phthalate

(34336)

Fluoranthene

(34376)

Hexahydrohexamethylcyclopentabenzopyran

(62823)

Indole

(62824)

01/29/2001 30 44 72 NA 90 E55 81.000 NA NA01/29/2001 <0.200 <0.080 <0.030 NA <0.080 <0.350 <0.030 NA NA04/02/2001 NA 91 76 E57 NA NA 79 84 42

04/02/2001 NA <1.000 <0.500 <1.000 NA NA <0.500 <0.500 <0.500

Date

(mm/dd/yyyy)

Isoborneol

(62825)

Isophorone

(34408)

Isopropylbenzene

(Cumene)

(77223)

Isoquinoline

(62826)

d-Limonene

(62819)

Lindane Menthol

(62827)

Metalaxyl1

(04254)

Methyl 

parathion

Methyl

 salicylate

(62828)

01/29/2001 NA NA NA NA NA 83 NA NA 55 NA01/29/2001 NA NA NA NA NA <0.050 NA NA <0.060 NA04/02/2001 82 81 26 72 E23 NA 64 86 NA 6404/02/2001 <0.500 <0.500 <0.500 <0.500 <0.500 NA <0.500 <0.500 NA <0.500

1sSee footnote at end of table.
Table 22. Quality-control laboratory reagent blank and reagent spike results for selected wastewater compounds in whole water at the U.S. Geological Survey National Water 

Quality Laboratory, Colorado—Continued.[The five digit number in parentheses below the compound name, the parameter code, is used in the U.S. Geological Survey’s computerized data system (National Water Information System) to uniquely identify a specific constituent or property. Blank values are reported as micrograms per liter (mg/L) unless noted. Spike values are reported as percent recovery. E, estimated value; mm/dd/yyyy, month/day/year; <, compound was not detected at a concentration above laboratory reporting level; NA, not analyzed]

Date

(mm/dd/yyyy)

Metolachlor

(82612)

N,N-Diethylmtoluamide 

(DEET)

(61947)

Naphthalene

(34696)

4-Nonylphenol 

diethoxylates

(NPEO2)

(61703)

4-Nonylphenol monoethoxylates 

(NPEO1)

(61704)

4-Octylphenol 

diethoxylates

(OPEO2)

(61705)

4-Octylphenol 

monoethoxylates

(OPEO1)

(61706)

p-Cresol

(77146)

4-Nonylphenol

(total)

Pentachlorophenol

(39032)

01/29/2001 NA 75 87 E54 E49 E37 E54 74 E75 NA01/29/2001 NA <0.080 <0.025 <1.100 <1.000 <0.200 <0.120 <0.060 <0.700 NA04/02/2001 90 87 47 E48 NA E47 E75 68 E42 4804/02/2001 <0.500 <0.500 <0.500 <5.000 NA E0.210 <1.000 <1.000 <5.000 <2.000

Date

(mm/dd/yyyy)

Phenanthrene

(34461)

Phenol

(34694)

Phthalic

anhydride

Prometon

(39056)

Pyrene

(34469)

Tetrachloroethene1

(34475)

Tributyl 

phosphate

(62832)

Triclosan

(61708)

Triethyl citrate

(ethyl citrate)

(62833)

Triphenyl 

phosphate

(62834)

01/29/2001 83 E75 E23 NA 80 47 NA 58 NA 8001/29/2001 <0.050 <0.450 <0.350 NA <0.030 <0.030 NA <0.050 NA <0.100

04/02/2001 82 E67 NA 81 77 19 83 41 73 57

04/02/2001 <0.500 <0.500 NA <0.500 <0.500 <0.500 <0.500 <1.000 <0.500 <0.500

Date

(mm/dd/yyyy)

Tris(2-butoxyethyl) 

phosphate

(62830)

Tris(2-chloroethyl) 

phosphate

(62831)

Tris(dichloroisopropyl) 

phosphate

(61707)

4-n-Nonylphenol 

(surrogate)

(percent)

BHT-d9 

(surrogate)

 (percent)

Decafluorobiphenyl 

(surrogate)

(percent)

Caffeine-C13

(surrogate)

(percent)

Fluoranthene-d10 

(surrogate)

 (percent)

Bisphenol 

A-d3

(surrogate)

 (percent) 

01/29/2001 48 65 66 76 74 NA NA NA NA01/29/2001 <0.200 <0.040 <0.100 66 41 NA NA NA NA04/02/2001 22 71 68 NA NA 43 69 78 4704/02/2001 <0.500 <0.500 <0.500 NA NA 34 56 66 2

1Compound not analyzed in environmental samples (table 13).

270 Water- and Air-Quality Monitoring, Sweetwater Reservoir Watershed, San Diego County, California,.... 1999–2001