Prepared in cooperation with the City of Kansas City, Missouri, Water Services Department 

Water-Quality and Biologic Data for the 

Blue River Basin, Kansas City Metropolitan 

Area, Missouri and Kansas, October 2000 to 

October 2004 

Data Series 127 


U.S. Department of the Interior 

U.S. Geological Survey 
Water-Quality and Biologic Data for 

the Blue River Basin, Kansas City 

Metropolitan Area, Missouri and 

Kansas, October 2000 to October 

2004

By Donald H. Wilkison, Daniel J. Armstrong, Rebecca E. Brown, Barry C. Poulton, 

Jeffrey D. Cahill, and Steven D. Zaugg

Prepared in cooperation with the

City of Kansas City, Missouri,

Water Services Department

Data Series 127

U.S. Department of the Interior

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

Gale A. Norton, Secretary

U.S. Geological Survey

P. Patrick Leahy, Acting Director

U.S. Geological Survey, Reston, Virginia: 2005

For sale by U.S. Geological Survey, Information Services

Box 25286, Denver Federal Center

Denver, CO 80225

For more information about the USGS and its products:

Telephone: 1-888-ASK-USGS

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Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply 

endorsement by the U.S. Government.

Although this report is in the public domain, permission must be secured from the individual copyright owners

to reproduce any copyrighted materials contained within this report.

Suggested citation: 

Wilkison, D.H., Armstrong, D.J., Brown, R.E., Poulton, B.C., Cahill, J.D., and Zaugg, S.D., 2005, Water-Quality and Bio­logic 

Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, October 2000 to October 2004:

U.S. Geological Survey Data Series 127, 158 p.
CONTENTS

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

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

Combined Sewer Overflows ..................................................................................................................................... 1

Purpose and Scope.................................................................................................................................................... 1

Study Area Description.............................................................................................................................................. 2

Previous Studies ......................................................................................................................................................... 2

Methods ................................................................................................................................................................................. 4

Sampling Protocol ...................................................................................................................................................... 5

Base-Flow and Stormflow Sampling .............................................................................................................. 5

Water-Column and Bottom-Sediment Samples............................................................................................ 5

Laboratory Analysis.................................................................................................................................................. 11

Quality Control and Assurance............................................................................................................................... 11

Field Methods ................................................................................................................................................... 11

Laboratory Methods ........................................................................................................................................ 13

Benthic Macroinvertebrate Sampling and Metrics............................................................................................ 19

Water-Quality Data............................................................................................................................................................. 20

Continuous Water Quality ....................................................................................................................................... 20

Nutrients..................................................................................................................................................................... 20

Bacteria and Suspended Sediment....................................................................................................................... 20

Organic Wastewater Compounds.......................................................................................................................... 21

Pharmaceutical Compounds................................................................................................................................... 21

Biologic Data....................................................................................................................................................................... 21

Summary .............................................................................................................................................................................. 21

Selected References ......................................................................................................................................................... 21

Figures

1. Map showing location of study area, sampling sites, wastewater treatment facilities, and area

 of combined storm and sanitary sewers ......................................................................................................... 3

2. Boxplots and time-series plots of mean daily physical properties for the Blue River near

Kansas City (site 7) and Brush Creek at Rockhill Road (site 11) from October 2000 

through October 2004........................................................................................................................................... 6

3. Quantile-quantile plots of replicate samples ................................................................................................... 12
Tables

1. Site number, station name, and station identification for sampling sites and types of data

collected at each site ..................................................................................................................................... 27

2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow

samples collected between June 2001 and September 2004 .................................................................. 28

3. Dissolved major ions and trace elements in base-flow samples............................................................. 38

4. Concentrations of selected organic wastewater compounds in base-flow samples collected 

between June 2001 and April 2004 ............................................................................................................... 41

5. Concentrations of selected pharmaceutical compounds in base-flow samples.................................. 73

6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater 

samples collected between October 2002 and June 2004........................................................................ 93

7. Concentrations of selected organic wastewater compounds in stormwater samples..................... 102

8. Concentrations of selected pharmaceutical compounds in stormwater samples............................. 111

9. Nutrients, bacteria, and selected chemical concentrations in water-column samples from 

selected reaches of Brush Creek ............................................................................................................... 116

10. Nutrients, bacteria, and selected chemical concentrations in bottom-sediment samples

from selected reaches of Brush Creek ...................................................................................................... 118

11. Concentrations of selected organic wastewater compounds in water-column and

bottom-sediment samples from selected reaches of Brush Creek....................................................... 119

12. Concentrations of selected pharmaceutical compounds in water-column and

bottom-sediment samples from selected reaches of Brush Creek ...................................................... 135

13. Quality-control data summary for selected organic wastewater compounds in laboratory 

reagent spike and blank samples ............................................................................................................... 143

14. Quality-control data summary for selected pharmaceutical compounds in laboratory 

reagent spike and blank samples ............................................................................................................... 146

15. List of benthic macroinvertebrate metrics used and metric status for stream sites sampled 

in 2002 and 2003 ............................................................................................................................................. 147

16. Benthic macroinvertebrate metric values for sites sampled in 2002.................................................... 148

17. Stream Condition Index (SCI) scores and Aquatic Life Use Support Status (ALUS) values 

for sites sampled in 2002 .............................................................................................................................. 149

18. Benthic macroinvertebrate metric values for sites sampled in 2003.................................................... 150

19. Aquatic Life Use Support Status (ALUS) values for sites sampled in February 2003 ......................... 151

20. Ranking of sites sampled in 2002 and 2003 for 10 proportionally scaled metrics................................ 152

21. List of macroinvertebrate taxa included in the sampling of stream sites during this study.............. 153
Conversion Factors and Datum 

Multiply By To obtain

Length

centimeter (cm) 	 0.3937 inch (in.)

millimeter (mm) 	 0.03937 inch (in.)

meter (m) 	 3.281 foot (ft)

kilometer (km) 	 0.6214 mile (mi)

Area

square meter (m2) 	 0.0002471 acre

hectare (ha) 	 2.471 acre

square kilometer (km2) 	 247.1 acre

square centimeter (cm2) 	 0.001076 square foot (ft2)

square decimeter (dm2) 	 0.1076 square foot (ft2)

square meter (m2) 	 10.76 square foot (ft2)

square centimeter (cm2) 	 0.1550 square inch (in2)

hectare (ha) 	 0.003861 square mile (mi2)

square kilometer (km2) 	 0.3861 square mile (mi2)

Volume

liter (L) 	 33.82 ounce, fluid (fl. oz)

liter (L) 	 2.113 pint (pt)

liter (L) 	 1.057 quart (qt)

liter (L) 	 0.2642 gallon (gal)

Flow rate

cubic meter per second (m3/s) 	 35.31 cubic foot per second (ft3/s)

Mass

gram (g) 	 0.03527 ounce, avoirdupois (oz)

kilogram (kg) 	 2.205 pound avoirdupois (lb)

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

°F = (1.8 x °C) + 32

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

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).
Water-Quality and Biologic Data for the Blue River Basin, 

Kansas City Metropolitan Area, Missouri and Kansas, 

October 2000 to October 2004 

By Donald H. Wilkison, Daniel J. Armstrong, Rebecca E. Brown, Barry C. Poulton, Jeffrey D. Cahill, and 

Steven D. Zaugg 

Abstract 

This report presents water-quality and biologic data collected in the Blue River Basin, metropolitan Kansas City, Missouri and Kansas, from October 2000 to October 2004. Data 

were collected in cooperation with the city of Kansas City, Missouri, Water Services Department as part of an ongoing study 

designed to characterize long-term water-quality trends in the 

basin and to provide data to support a strategy for combined 

sewer overflow control. These data include values of physical 

properties, fecal indicator bacteria densities, suspended sediment, and concentrations of major ions, nutrients, trace elements, organic wastewater compounds, and pharmaceutical 

compounds in base-flow and stormflow stream samples and 

bottom sediments. Six surface-water sites in the basin were 

sampled 13 times during base-flow conditions and during a 

minimum of 7 storms. Benthic macroinvertebrate communities 

are described at 10 sites in the basin and 1 site outside the basin. 

Water-column and bottom-sediment data from impounded 

reaches of Brush Creek are provided. Continuous specific conductance, pH, water-quality temperature, turbidity, and dissolved oxygen data are provided for two streams—the Blue 

River and Brush Creek. Sampling, analytical, and quality assurance methods used in data collection during the study also are 

described in the report. 

Introduction 

Wastewater, both treated and untreated, is an important 

hydrologic component in the Blue River Basin. As development, population, and wastewater treatment capacity increase in 

the basin, anthropogenic alterations to stream hydrology and 

water quality can be expected. Consequently, the contribution 

of urban point-source and nonpoint-source contamination to 

constituent concentrations and loads in the basin may be 

increasing. Investigations are needed to characterize and understand the roles of point and nonpoint-source contamination with 

regard to water quality in the basin and how these roles may be 

changing with time. Data are needed to provide a scientific 

basis to better understand these issues, characterize long-term 

water-quality trends, and to support the development of basin 

management strategies that address factors affecting stream 

water quality. 

Combined Sewer Overflows 

Kansas City is 1 of 770 cities in the United States served 

by combined sewers. Combined sewers are designed to transport both sewage and stormwater. During dry weather, sewage 

from homes, businesses, and industry is transported to a wastewater treatment facility (WWTF) for treatment and then discharged to a receiving water body. During wet weather, runoff 

from streets, rooftops, parking lots, and lawns enter the combined system. Depending on the amount, or intensity, of the 

runoff or snowmelt, the combined volume of runoff and sewage 

can exceed the capacity of the pipe network or treatment plant. 

As a result, excess flow (a mixture of stormwater and sewage) 

is diverted from the sewer system to local receiving waters. This 

diversion and discharge is referred to as a combined sewer overflow (CSO). 

Under Federal and state regulations, communities with 

combined sewers must develop a plan to control their overflow 

(U.S. Environmental Protection Agency, 1994). The regulations have specific requirements for developing a CSO longterm control plan. As part of this plan, water-quality data on 

streams receiving CSOs are needed to understand existing conditions and to characterize other pollutant sources in the basin 

that might prevent the attainment of water-quality objectives 

(U.S. Environmental Protection Agency, 1999). The data also 

are needed to develop water-quality models that can be used to 

predict improvement in water quality related to a range of control options. 

Purpose and Scope 

This report presents water-quality and biologic data collected in the Blue River Basin from October 2000 to October 

2004 by the U.S. Geological Survey (USGS) as part of a cooperative study with the city of Kansas City, Missouri, Water Ser­
2 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 

vices Department. Data were collected as part of an ongoing 

study designed to characterize long-term water-quality trends in 

the basin and provide data to support a strategy for CSO control. 

Two streams in the basin, the Blue River and Brush Creek, contain stream segments that are in areas served by combined sewers and are subject to CSOs during wet weather. Water-quality 

sampling sites are shown in figure 1 in relation to streams and 

tributaries in the basin, to the areal extent of CSOs in Kansas 

City, Missouri, and to the proximity of existing WWTFs in the 

study area. Data from one site outside the Blue River Basin (site 

19, fig. 1) also are included in the report. 

The sampling effort described in this report is an extension 

of a previous water-quality study conducted in the basin from 

July 1998 to October 2000 (Wilkison and others, 2002). Values 

of physical properties, fecal indicator bacteria [Escherichia coli 

(E. coli) and fecal coliform] densities, and concentrations of 

major ions, nutrients, trace elements, organic wastewater compounds, and pharmaceutical compounds, including selected 

over-the-counter and prescription drugs, in stream samples and 

bottom sediments are described in this report. Continuous 

water-quality data for specific conductance, pH, temperature, 

turbidity, and dissolved oxygen are included for one site on the 

Blue River and one site on Brush Creek in the Kansas City metropolitan area. Aquatic biota in the basin are measured using 

biological assessment protocols for aquatic macroinvertebrate 

communities (Rabeni and others, 1997; Kansas Department of 

Health and Environment, 2000). Sampling, analytical, and quality assurance methods used in data collection are described. 

These streams and their adjacent park lands provide 

numerous recreational and developmental opportunities that 

potentially are negatively affected by water-quality issues. 

Development within the upper basin continues at a rapid pace, 

and, as it does, the potential for deleterious water-quality effects 

also increases. Some compounds examined likely produce 

adverse effects when released into the environment, either 

through direct harm to bacterial or aquatic health, or as agents 

of endocrine disruption (Wilkison and others, 2002). 

Study Area Description 

The Blue River Basin encompasses approximately onehalf of the Kansas City metropolitan area, consisting of approximately 700 km2

 (square kilometers) in parts of Johnson and 

Wyandotte County, Kansas, and Cass and Jackson County, 

Missouri. The study area included part of the Blue River, Indian 

Creek, Tomahawk Creek, and Brush Creek. Reaches of the Blue 

River, Indian Creek, and Brush Creek that receive treated or 

untreated wastewater discharges were sampled (fig. 1). Natural 

streamflow in the basin is altered by inputs from three WWTFs, 

75 CSO outfalls, and runoff from impervious surfaces. 

Generally, more than one-half of the base flow in the Blue 

River downstream from the junction with Indian Creek originates as wastewater effluent (Wilkison and others, 2002). During drought periods, such as 2002 and 2003, the ratio of effluent 

to natural streamflow can exceed 95 percent (unpublished data 

on file at the U.S. Geological Survey, Lee’s Summit, Missouri). 

Approximately 140 km2

 of the basin are underlain by a combined sewer system that sometimes allows untreated wastewater mixed with stormwater runoff to discharge into receiving 

waters. The approximate boundaries of the combined system 

are the Missouri River on the north, the Blue River on the east, 

85th Street on the south, and the Missouri-Kansas state line on 

the west (fig. 1). Sections of the Kansas and Missouri Rivers 

that also receive effluent and CSO discharges were not part of 

this study. 

Much of the basin is nearly completely developed and has 

been for a number of years. However, there has been a 25 percent increase in urbanized area in the upper part of the Blue 

River Basin during the last 20 years (U.S. Census Bureau, 

2002), which has resulted in increasing quantities of runoff in 

the Blue River (Wilkison and others, 2002). The upper basin 

continues to be one of the most rapidly developing parts of metropolitan Kansas City, and extensive growth is projected to continue for the next 20 years (Mid-America Regional Council, 

2003). 

Flooding is a concern in the basin. Floods have resulted in 

extensive property damage and loss of life (Hauth and Carswell, 

1978; Becker and others, 1983). During the last 30 years, 250 

million dollars have been spent on basin flood-control projects 

(U.S. Army Corps of Engineers, 2004). The lower part of Brush 

Creek (downstream from the Missouri-Kansas state line) and 

the Blue River (downstream from the mouth of Brush Creek) 

have been channelized to decrease the area inundated by floods. 

Numerous stream segments have been straightened, and the 

banks lined with rip-rap or concrete to increase stormwater conveyance. In the process, much of the riparian corridor and native 

instream habitat has been altered or removed. 

Water-quality issues also have been a concern in the basin. 

Principal water-quality concerns have centered around the 

effects of increasing urbanization in the basin, industrial and 

wastewater discharges, nonpoint-source pollution, and CSOs 

(Mid-America Regional Council, 1983; Blevins, 1986; Wilkison and others, 2002). Stream alterations, habitat loss, pointand nonpoint-source pollution, and urban development each 

cause concern about the ecological condition of receiving 

streams in the basin and how these conditions might be changing with time. 

Previous Studies 

In 1998, the USGS began analyzing stream samples within 

the Blue River Basin to better understand how wastewater 

might be affecting the water quality of receiving streams 

(Wilkison and others, 2002). This work focused primarily on 

the lower one-half of the Blue River and Brush Creek, although 

a few samples were collected in the upper reaches of the basin 

and along one of the principal tributaries, Indian Creek, to better 

characterize wastewater effluent loadings to the Blue River. 

Stream samples were analyzed for a number of constituents, 

including nutrients, suspended sediment, E. coli, organic waste­
3 

0 1 2 3 4 5 MILES 

Introduction 

94°52'30" 94°45' 94°37'30" 94°30' 

39°07'30" 

39° 

38°52'30" 

38°45' 

Areal extent of 

combined storm and 

sanitary sewers 

River

M i sso u r i 

Kansas City, Missouri 

city limit 

MISSOURI

KANSAS 

Kansas City, Kansas 

city limit 

KANSAS MISSOURI 

LOCATION MAPS 

WYANDOTTE 

WYANDOTTE 

JOHNSON 

JOHNSON 

CASS

CASS

19 

JACKSON 

JACKSON 

Enlarged 

area 

Sout h Gr and 

River 

18 

13 

14 

9 

7 

8 

12 

6 

11 

1 

2 

5 

15 

3 

4 

10 

16 17

Kansas

River 

Brush

Cr eek 

Blue 

River 

Indian 

Creek 

Tomahawk 

Creek 

Cof fee 

Creek 

River 

Wolf 

Creek 

Blue 

Base from U.S. Geological Survey digital data, 1:100,000, 1992 

Transverse Mercator projection 

Central meridian 93°00’, origin 00°00’ 0 1 2 3 4 5 KILOMETERS 

EXPLANATION 

1 WATER-QUALITY SAMPLING SITE AND NUMBER 

7 CONTINUOUS PHYSICAL PROPERTIES AND WATER-QUALITY SAMPLING SITE AND NUMBER 

15 WASTEWATER TREATMENT FACILITY AND SITE NUMBER 

10 WATER-COLUMN AND BOTTOM SEDIMENT SAMPLING SITE AND NUMBER 

BIOLOGIC SAMPLING SITE 

Figure 1. Location of study area, sampling sites, wastewater treatment facilities, and area of 

combined storm and sanitary sewers. 
4 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 

water compounds, and selected pharmaceutical compounds. 

DNA-fingerprinting of E. coli was used to estimate relative proportions of bacteria sources at selected sites within the study 

area. A number of compounds, known to be related to human 

wastewater, were determined to be widespread in stream samples collected during both base flow and stormwater runoff. 

These data indicated that water quality in the basin was affected 

by numerous contaminant sources. Sources included urban 

stormwater runoff and a variety of wastewater sources, including CSOs, leaks from aging or damaged sewer lines, sediments 

trapped behind recreational impoundments, continuous (or 

nearly continuous) discharges of treated WWTF effluent, occasional WWTF by-pass discharges, and a combination of these 

factors (Wilkison and others, 2002). 

Systematic measurement of streamflow began in 1939 on 

the Blue River (site 7, fig. 1) and in 1963 on Indian Creek 

(approximately 1 mi upstream from site 6, fig. 1) and has continued through the present. Various other streamflow gages 

were established as part of individual study efforts over the 

years (Blevins, 1986; Becker, 1990; Wilkison and others, 

2002); several of which are currently (2005) in use. 

The publication of a national reconnaissance on the occurrence of organic wastewater and pharmaceutical compounds 

(Barnes and others, 2002; Kolpin and others, 2002) in surface 

waters of the United States has lead to other studies that either 

describe the occurrence of these compounds on a local scale or 

describe processes that affect the fate and distribution of these 

compounds in the environment. 

Barnes and others (2005) described the occurrence and 

distribution of organic wastewater and pharmaceutical compounds in a reconnaissance study of ground water and drinking 

water facilities in the United States. The persistence of these 

compounds in a conventional drinking water treatment plant 

was examined by Stackleberg and others (2004). Lee and others 

(2004) described the presence and distribution of these compounds in wastewater, surface, ground, and drinking waters of 

Minnesota. Other studies (Barber and others, 2002; Barnes and 

others, 2004; Kolpin and others, 2004) have described the 

importance of flow conditions or land use on constituent contributions to surface water. 

Several review papers also have been written that provide 

summaries of either the occurrence of organic wastewater and 

pharmaceutical compounds in the environment (Jorgensen and 

Halling-Sorensen, 2000; Heberer, 2002a; Focazio and others, 

2004), their removal during drinking water or wastewater treatment (Heberer, 2002b), or issues and risks associated with their 

environmental occurrence (Daughton and Jones-Lepp, 2001; 

Focazio and others, 2004). 

Although systematic studies have described macroinvertebrate communities in Missouri, few data are available on community structure in urban areas. Existing macroinvertebrate 

studies have been largely confined to wetlands (Heimann and 

Femmer, 1998), large river systems (Poulton, 2003), and the 

Ozarks (U.S. Geological Survey, written commun., 2005). The 

Missouri Department of Natural Resources (MDNR) assesses 

macroinvertebrate communities in the State, but has not examined them in the Kansas City metropolitan area. 

Methods 

Water-quality and biologic data were collected from October 2000 to October 2004 during both base-flow and stormwater conditions. Stream samples were collected from selected 

surface-water sites (fig. 1; table 1, at the back of this report) and 

analyzed for physical properties, fecal indicator bacteria (E. coli 

and fecal coliform), major ions, nutrients, trace elements, 

organic wastewater compounds, and selected pharmaceutical 

compounds. Water samples from wastewater influent streams at 

two WWTFs (sites 17, 18; fig. 1) were analyzed for selected 

pharmaceutical compounds to determine concentrations 

expected in untreated wastewater during base flow and from the 

effluent at one WWTF (site 18) to examine concentrations after 

treatment. Base flow for this study was defined as streamflow 

unaffected by runoff. Water-column and bottom-sediment samples were collected from selected reaches of Brush Creek. Macroinvertebrate samples were collected at 11 sites (fig. 1, table 

1). 

Physical properties were measured onsite at the time of 

sample collection and included discharge, specific conductance, pH, temperature, turbidity, and dissolved oxygen according to USGS procedures (Wilde and Radtke, 1998). Stream discharge measurements were either made concurrent with sample 

collection or taken from established stage-discharge relations in 

accordance with USGS methods (Rantz and others, 1982a; 

1982b). Fecal indicator bacteria samples were collected and 

analyzed using the membrane filtration technique described in 

Myers and Wilde (2003). Selected bacteria samples were enumerated by defined substrate method (Covert and others, 1992; 

Yakub and others, 2002; Noble and others, 2003). Nutrients 

analyzed in this study included total ammonia plus organic 

nitrogen, dissolved ammonia as nitrogen, dissolved nitrite 

(NO2) plus nitrate (NO3) as nitrogen, dissolved nitrite as nitrogen, orthophosphate, and dissolved and total phosphorus. Major 

ions and trace elements were analyzed, including arsenic, copper, lead, mercury, and zinc. Organic wastewater compounds 

refer to a list of common household and industrial chemicals 

including, but not limited to, detergent surfactants and surfactant metabolites, antimicrobial agents, personal-care insecticides, plasticizers, musks and fragrance compounds (Zaugg and 

others, 2002). Pharmaceutical compounds analyzed included 

several analgesics (acetaminophen and ibuprofen), anti-epileptics (carbemazepine), stimulants (caffeine and cotinine, a 

metabolite of nicotine), narcotics (codeine), cholesterol-regulators (gemfibrozil), cardiac and anti-clotting related medications 

(dehydronifedipine, diltiazem, and warfarin), and antibiotics 

(sulfamethoxazole and trimethoprim) (Cahill and others, 2004). 

Physical properties, including specific conductance, pH, 

water temperature, turbidity, and dissolved oxygen, were measured continuously (15-minute intervals) at two sites (sites 7 
5 

and 11, table 1, fig. 2) from early spring to late fall (generally 

the first of April to the beginning of December each year) using 

multi-parameter probes designed for continuous instream measurement. Data were not collected during winter months 

because of the potential for probe freezing and instrument damage. Monitors were installed to allow adequate contact with the 

sampled stream and to provide protection from flood events. 

Installation, operation, calibration, and cleaning of the monitors 

and records computation were done in accordance with established USGS guidelines (Wagner and others, 2000). The continuous water-quality data were made available on the world wide 

web (http://waterdata.usgs.gov/mo/nwis) and mean daily waterquality values published annually (Hauck and Nagel, 2002; 

2003; 2004; 2005). Estimations and corrections to the record 

were based on partial day records, inspection of contiguous 

data, hydrograph comparison, and the best judgement of the 

hydrographer as outlined in standard USGS methods (Rantz 

and others, 1982a; Wagner and others, 2000). 

Sampling Protocol 

Base-Flow and Stormflow Sampling 

Continuous stage (water-surface elevation) data were collected at USGS gaging stations (sites 1, 2, 6, 7, 9, 11, 13, and 

14; fig. 1, table 1) from October 2000 to October 2004. Stage 

data were measured at 5- or 15-minute intervals using a recording gas-bubble system. Stage at site 2 was additionally measured using a non-contact, pulsed, radar sensor. Streamflow 

measurements were used to establish and maintain the relation 

between stage and discharge (Rantz and others, 1982b). Discharge data from these stations were made available on the 

world wide web (http://waterdata.usgs.gov/mo/nwis) and published annually (Hauck and Nagel, 2002; 2003; 2004; 2005). At 

sites without continuous stage-discharge relations (sites 3, 4, 5, 

and 19), flow measurements were made concurrent with sample 

collection to determine the discharge. Standard USGS methods 

(Rantz and others, 1982a) were used to measure discharge at all 

sites. 

Depth- and width-integrated water samples were collected 

manually during base-flow conditions using standard USGS 

collection and processing methods appropriate for each stream 

section (Wilde and others, 1999a; 199b; Wilde, 2004). When 

necessitated by flow constrictions, grab samples were collected 

from the centroid of flow. Six principal surface-water locations 

(sites 2, 6, 7, 9, 11, and 13/14; fig. 1) were sampled during base 

flow. For safety reasons, data collection on the lower Blue River 

was moved approximately 0.5 mi upstream from site 14 to site 

13 beginning in March 2003. For the principal sites, samples 

were collected at a minimum of 13 different base-flow conditions between June 2001 and August 2004. At selected 

upstream sites (sites 1, 3, 4, and 7), three to eight samples were 

collected between August 2001 and March 2003. Analytical 

results from stream samples collected from lotic stream sections 

Methods 

during base-flow conditions are given in tables 2 to 5, at the 

back of this report. 

Stormwater samples were collected from the same six 

principal surface-water sites (sites 2, 6, 7, 9, 11, and 13/14; fig. 

1) with an effort to ensure that the sampling point was representative of a well-mixed stream sample, usually near the centroid 

of flow, or channel thalweg. Again, for safety reasons, beginning March 2003, data collection on the lower Blue River was 

moved from site 14 to site 13. Stormwater samples were collected using automatic samplers programmed to collect flowweighted samples after stage thresholds were exceeded. The 

programs generally were based on the shape and duration of a 

hydrograph from a thunderstorm capable of producing 0.75 to 

1.5 in. (inches) of precipitation. However, special consideration 

was given to ensure that the rising limb of the hydrograph and 

peak stormflow were captured during sampling. Although 

attempts were made to sample the same storms at all sites, the 

intensity of rainfall often varied considerably within the basin 

for any given storm. Thus, samples were sometimes collected at 

one site, while not at another. The number of stormwater samples collected ranged from 7 (sites 2 and 7) to 12 (sites 6 and 9). 

Sample lines were flushed twice prior to, and between, sample 

collections to minimize cross-contamination. Analytical results 

from stormwater samples are reported in tables 6 to 8, at the 

back of this report. 

Samples were collected using stainless steel or fluorocarbon polymer equipment, with the exception of bacteria samples, 

which were collected in aseptic glass or polycarbonate containers. Sampling equipment was cleaned between sampling events 

using established USGS methods designed for the collection of 

organic compounds, such as wastewater and pharmaceutical 

compounds (Wilde and others, 1999b; Wilde, 2004). This 

method involves a series of cleaning and rinsing procedures that 

were, in brief, a triple-rinsing of the equipment in tap water followed by a 30-minute (or overnight) soaking in a non-phosphate, low-sudsing detergent, followed by copious rinsing 

(minimum of three rinses) with tap water. Equipment was then 

triple-rinsed with high-performance liquid chromatography 

(HPLC)-grade organic-free water, followed by one rinse of 

HPLC-grade methanol, and finally by a single rinse of HPLCgrade organic-free water. To ensure aseptic conditions, 

autosampler bottles were additionally rinsed with histologicalgrade 2-propanol. Once clean (and sterile, or both), the equipment was then capped and stored inside two sealed polypropylene bags until use onsite. Bags were not reused for equipment 

storage. 

Water-Column and Bottom-Sediment Samples 

Water-column and bottom-sediment samples were collected from selected reaches of Brush Creek (sites 10–12) to 

provide data to assess the effects that bottom sediments might 

have on the water quality of the overlying water column. These 

reaches are upstream from a series of low-water dams situated 

along the lower one-half of Brush Creek. The low-water dams 
6 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004

T 25 DEGREES CELSIUS OSIEMENS PER CENTIMETER A ANCE, IN MICR SPECIFIC CONDUCT No data No data No data No data 

J F

M A M J J A S N O D J F M A M J J A S N O D J F M A M J J A S N O D J F M A M J J A S N O D

O

2000 2002 2001 2003 2004

Maximum value 

2,800

500250

0

1,000

750

1,200

SITE 7SITE 11 

No data 

0

500

xxxxxxxxxxxx

SITE 7 SITE 11 

750

250

1,250

1,000

(747)

[742]

(577)

[467]

806

815

xx

(747)

[742] o

o

806 NUMBER OF SAMPLES 

VALUE GREATER THAN 3.0 TIMES THE  INTERQUARTILE RANGE ABOVE THE BOX  (far-out value) VALUE WITHIN 1.5 AND 3.0 TIMES THE  INTERQUARTILE RANGE ABOVE THE BOX  (outside value) LARGEST VALUE WITHIN 1.5 TIMES THE  INTERQUARTILE RANGE ABOVE THE BOX  (adjacent value) 

SMALLEST VALUE WITHIN 1.5 TIMES THE  INTERQUARTILE RANGE BELOW THE BOX 

(adjacent value) 

VALUE WITHIN 1.5 AND 3.0 TIMES THE  INTERQUARTILE RANGE BELOW THE BOX 

(outside value) 

VALUE GREATER THAN 3.0 TIMES THE  INTERQUARTILE RANGE BELOW THE BOX 

(far-out value) 

75th PERCENTILE 50th PERCENTILE (MEDIAN) 25th PERCENTILE 

EXPLANATION 

MEDIAN VALUE MEAN VALUE 

Figure 2. Boxplots and time-series plots of mean daily physical properties for the Blue River near Kansas City (site 7) and Brush Creek at Rockhill Road

(site 11) from October 2000 through October 2004. 
7 

10 

9 

8 

7 

6 

ARD UNITS AND pH, IN ST

ox

xxxxxxxx

x

815

(7.76)

[7.38]

(7.71)

[7.73]

808

SITE 7 SITE 11

10

9876 

No data 

SITE 7SITE 11

No data 

No data 

No data 

No data 

J A S O N O D J F M A M J J A S N O D J F M A M J J A S N O D J F M A M J J A S N O D J F M A M J 

2000 2001 2002 2003 2004 

Figure 2. Boxplots and time-series plots of mean daily physical properties for the Blue River near Kansas City (site 7) and Brush Creek at Rockhill Road 

(site 11) from October 2000 through October 2004—Continued. 

Methods 
15 

8 

3530 

25 

20 

TURE, IN DEGREES CELSIUS TEMPERA TER A W

Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 JF M A M J J A S D J F M A M J J A S N O D J F M A M J J A S N O D J F M A M J J A S N O D O No data No data No data No data 

N O

10

5

0

815 808

[19.2]

(21.2)

(19.9) [20.3]

SITE 7

SITE 11 

SITE 7 SITE 11 

353025201510

5

0 

2000 2001 2002 2003 2004 

Figure 2. Boxplots and time-series plots of mean daily physical properties for the Blue River near Kansas City (site 7) and Brush Creek at Rockhill Road 

(site 11) from October 2000 through October 2004—Continued. 
9 

TURBIDITY UNITS , IN NEPHELOMETRIC TURBIDITY

xxxxxxxxxxxxx xx

xxxxxxxxxxxx

801 

799 

10 

1

2,000 

(8.0)

[23.1] 

(24.7)

[73.4] 

100

1,000 

SITE 7 SITE 11 

2,000

1,000

100

10

1 

JF M A M J J A S N O N O D D JF M A M J JA S N O D JF M A M J J A S N O D JF M A M J J A S O 

No data 

No data 

No data 

No data 

No data 

SITE 7

SITE 11 

2000 2001 2002 2003 2004 

Figure 2. Boxplots and time-series plots of mean daily physical properties for the Blue River near Kansas City (site 7) and Brush Creek at Rockhill Road 

(site 11) from October 2000 through October 2004—Continued. 

Methods 
10 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004

DISSOLVED OXYGEN, IN MILLIGRAMS PER LITER 

50

1510

Site 7 (36)Site 11 (2) 

Number in parentheses is percent of days  that dissolved oxygen concentration was  less than the standard 

No data No data No data No data 

J F

M A M J J A S N O D N O D

2000 2001 2003 2004

J F

M A M J J A S N O D J F

M A M J J A S N O D J F

M A M J J A S O

2002

20

15

10

20

xxxxxxxxxxxxxxxxxxxxxxxxxxx

oo

xxxxxx

50

808

820

SITE 11 SITE 7

(6.4)

(7.6)

[7.8]

[6.7]

Minimum standard for 

full protection of 

warm-water aquatic life 

in Missouri

(State of Missouri, 2004)

Figure 2. Boxplots and time-series plots of mean daily physical properties for the Blue River near Kansas City (site 7) and Brush Creek at Rockhill Road

(site 11) from October 2000 through October 2004—Continued. 
impound water and create lentic, or slow-moving, stream sections during base flow. Because the intent was to sample water 

that was in chemical equilibrium with bottom sediment, sampling events were scheduled to follow extended periods (2 

weeks or greater) of little, or no, precipitation. Usually, these 

periods coincided with periods of thermal stratification. Therefore, to assess spatial and depth changes in water chemistry, vertical profiles of selected physical properties were determined 

concurrently with the collection of water samples. Specific conductance, pH, temperature, turbidity, dissolved oxygen, and 

oxidation-reduction potential were determined at 0.25-m 

(meter) depth intervals. Secchi disk depths were measured prior 

to collecting water samples so that the photic (depth of light 

penetration) and aphotic (depth of no light penetration) zones 

could be elaborated. The photic zone was defined for this study 

as 1.5 times the secchi depth, and the aphotic zone was defined 

as the zone between the base of the photic zone and 0.25 m 

above the bottom sediments. Water samples were depth integrated through the photic and aphotic zone. An additional water 

sample was collected from 0.25 m above the bottom sediments. 

Bottom sediments were collected using either a stainless steel 2­

in. corer or a stainless steel Ponar sampler. Bottom-sediment 

samples were collected adjacent to the low-water dam at each 

site and from two or three depositional zones upstream from the 

dam. When the 2-in. corer was employed, 10 randomly selected 

bottom-sediment samples were collected within a 25-m radius 

around the water column sampling point. When the Ponar sampler was employed, three to four randomly selected samples 

were collected within a 25-m radius of the water sampling location. Sediment samples at each sampling point were then composited into a stainless steel pail before splitting into containers 

for laboratory analysis. Results from water-column and bottomsediment samples are reported in tables 9 to 12, at the back of 

this report. 

Laboratory Analysis 

Biochemical oxygen demand and fecal indicator bacteria 

samples were analyzed by personnel at the USGS Kansas City 

Water Science Center. Laboratory analysis for all other compounds were performed at the USGS National Water Quality 

Laboratory (NWQL) in Arvada, Colorado. The USGS Columbia Environmental Research Center personnel enumerated macroinvertebrate samples collected in 2002 and NWQL personnel 

identified samples collected in 2003. 

Nitrogen and phosphorus species were determined from 

unfiltered and filtered samples using methods discussed in Fishman and Friedman (1989) or Fishman (1993). Major ions, trace 

elements, and metals were determined from filtered samples 

using methods described by Faires (1993) or Fishman (1993). 

Organic wastewater compounds were determined from unfiltered samples by continuous liquid-liquid extraction and capillary-column gas chromatography/mass spectrometry (GC/MS) 

(Kolpin and others, 2002; S.D. Zaugg and others, U.S. Geological Survey, written commun., 2005). Selected samples were 

Methods 11 

analyzed using a variant of this method that captures and concentrates the analytes of interest on solid phase extraction cartridges prior to elution and entry into the GC/MS (Zaugg and 

others, 2002). Pharmaceutical compounds were determined 

from filtered samples by solid-phase extraction and HPLC-electrospray ionization mass spectrometry (Cahill and others, 

2004). 

Quality Control and Assurance 

Quality-control and assurance samples, designed to document the integrity of the water-quality data presented in this 

report, represented approximately 10 percent of all samples. 

The variability of sample collection and processing procedures 

was assessed through the use of replicate samples. The adequacy of cleaning protocols for field and sample-processing 

equipment was evaluated through the collection of field equipment blank samples. Laboratory method performance was continuously evaluated through the use of standard reference materials, logic checks, and internal data reviews. 

Field Methods 

Replicate samples were collected to determine the variability in sample collection and processing procedures and to 

examine the effect these variations can have on environmental 

concentrations. Quantile-quantile (Q-Q) plots (fig. 3) show the 

concentrations of constituents in environmental samples in relation to the concentrations determined from replicate samples. 

The smaller the difference between the two measured concentrations, the higher the confidence level that sampling variability does not unduly bias results. Concentration differences can, 

and do, exist in replicate samples. The coefficients of determination for environmental and replicate samples analyzed for 

nutrients and pharmaceutical compounds was 0.96 and 0.94; the 

relative percent difference for these compounds averaged 1 percent or less. These data indicate that sample collection and analysis procedures typically accounted for no more than 4 to 6 percent of any error in concentration. A higher degree of 

uncertainty resulted when compounds were determined from 

whole water samples because slight differences in suspended 

sediment or organic matter can substantially affect concentrations. Samples analyzed for organic wastewater compounds 

method had lower coefficients of determinations (average r2 of 

0.85) and higher relative percent differences (average of 5.7 

percent) than did the samples for nutrient or pharmaceutical 

compounds. Where constituents were mediated by biological 

activity (such as biochemical oxygen demand), replicate precision also tended to decline. 

Field equipment blank samples were collected by passing 

highly purified water through the same equipment used to collect and process water-quality samples, and then they were 

stored, shipped, and analyzed by the identical methods that 

were used for environmental samples. Measurable concentrations in blank water can result from trace amounts of constitu­
12 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 

Dissolved chloride 

r 2 = 0.999 

s = 3.20 

RPD = 0.0 

n = 18 

400 5 3.0

Total ammonia 

plus organic nitrogen 

r 2 = 0.846 

s = 0.436 

RPD = 2.7 

n = 34 

2.5 4 300 

2.0 

3 

200 1.5 

2 

1.0 

100 

1 0.5 

0 0 0 0 100 200 300 400 0 1 2 3 4 5 0 0.5 1.0 1.5 2.0 2.5 3.0 

14 0.4 3.5 

12 3.0

0.3 10 2.5

8 2.0

0.2


6
 1.5 

4 1.0 0.1


2
 0.5 

0 

0 2 4 6 8 10 12 14 

0 0 

Dissolved nitrite

as nitrogen 

r 2 = 0.987 

s = 0.010 

RPD = 1.5 

n = 34 

0.1 0.2 0.3 0.4 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 

3.5 3.5 

Total phosphorus 

r 2 = 0.991 

s = 0.075 

RPD = 1.0 

n = 34 

10 

3.0 3.0 

8 

2.5 2.5 

6 2.0 2.0 

1.5 1.5 4 

1.0 1.0 

2 0.5 0.5 

0 0 0 

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 2 4 6 8 10 

80 

Biochemical oxygen

demand 

r 2 = 0.926 

s = 5.74 

RPD = 2.6 

n = 9 

50 120

40 60


80


30


40


20 40 

20


10


0 0 0

Chemical oxygen 

demand 

r 2 = 0.742 

s = 15.05 

RPD = 1.7 

n = 22 

0 10 20 30 40 50 0 20 40 60 80 0 40 80 120 

REPLICATE SAMPLE CONCENTRATION, IN MILLIGRAMS PER LITER 

EXPLANATION 

r 2 COEFFICIENT OF DETERMINATION 

s STANDARD ERROR, IN MILLIGRAMS PER LITER 

RPD AVERAGE RELATIVE PERCENT DIFFERENCE 

n NUMBER OF REPLICATES 

Dissolved ammonia 

as nitrogen 

r 2 = 0.995 

s = 0.040 

RPD = 7.2 

n = 34 

Dissolved nitrite plus 

nitrate as nitrogen 

r 2 = 0.998 

s = 0.114 

RPD = 1.4 

n = 34 

Dissolved 

orthophosphate 

as phosphorus 

r 2 = 0.999 

s = 0.033 

RPD = 4.0 

n = 22

Dissolved phosphorus 

r 2 = 0.999 

s = 0.025 

RPD = 1.1 

n = 34 

Dissolved organic 

carbon 

r 2 = 0.948 

s = 0.366 

RPD = 2.9 

n = 13 

Total organic carbon 

r 2 = 0.981 

s = 1.56 

RPD = 0.0 

n = 26 

Figure 3. Quantile-quantile plots of replicate samples. 

ENVIRONMENTAL SAMPLE CONCENTRATION, IN MILLIGRAMS PER LITER 
20,000 25,000 250,000

ENVIRONMENTAL SAMPLE DENSITY, 

IN COLONIES PER 100 MILLILITERS

Escherichia coli 

r 2 = 0.999 

s = 152 

RPD = -1.1 

n = 12 

20,000 15,000 

Fecal coliform 

r 2 = 1 

s = 28.4 

RPD = -16.5 

n = 4 

15,000 150,000

Total coliform 

r 2 = 1 

s = 178 

RPD = -2.3 

n = 5 

10,000 

10,000 

5,000 5,000 50,000 

0 

0 5,000 10,000 15,000 20,000 

0 

0 5,000 10,000 15,000 20,000 25,000 0 50,000 150,000 250,000 

REPLICATE SAMPLE DENSITY, IN COLONIES PER 100 MILLILITERS 

0

ENVIRONMENTAL SAMPLE CONCENTRATION, 


IN MILLIGRAMS PER LITER 


4,000 

3,000 

2,000 

1,000 

0 

0 

Suspended sediment 

r 2 = 0.996 

s = 56.9 

RPD = 0.4 

n = 25 

1,000 2,000 3,000 4,000 

REPLICATE SAMPLE CONCENTRATION,


IN MILLIGRAMS PER LITER


Figure 3. Quantile-quantile plots of replicate samples—Continued. 

Methods 13 

ents in the water, as well as residual material in sample processing or analytical equipment. Most compounds were not detected 

in field equipment blanks; if detected, the reported concentrations were near the detection limits for the compounds. Field 

equipment blank concentrations are reported in tables 3 to 12, 

adjacent to the results from environmental samples that were 

collected sequential to the blank samples. Among the blank 

samples collected for pharmaceutical compounds, there was 

one detection each of sulfamethoxazole and diphenhydramine. 

The concentration of sulfamethoxazole reported in the blank 

sample was estimated to be less than the method reporting limit 

for that compound, and diphenhydramine was not detected in 

any of the environmental samples in this study. For bacteria 

analyses, an equipment blank was processed before and after 

every environmental sample (approximately 100 samples; data 

not shown) to ensure the sterility of filtering equipment and to 

evaluate cross-contamination potential. No bacteria colonies 

were observed in any of the equipment blanks. 

Laboratory Methods 

Standard laboratory production methods have been used 

for many years at the USGS NWQL. As a result, quality assurance information for major ion, nutrient, and trace metal analyses are tracked annually by several techniques. These methodologies include determination of long-term method detection 

limits, internal and external audits, blind blank and blind spike 

programs using standard reference materials, method performance evaluations, and data review. Laboratory blank and 

reagent-spiked samples were processed with environmental 

samples to assess sample contamination potential and to provide method performance, bias, and variability information. 

Data review was performed by logic algorithms (for example 

cation/anion balances) and data that were outside acceptable 

limits were reviewed by chemists, verified, and re-analyzed, if 

necessary, prior to release. The NWQL quality-assurance data 

for standard production methods are documented in Childress 

and others (1999) or on the world wide web (URL http:// 

bqs.usgs.gov). These data indicate that laboratory bias and variability were within acceptable limits—generally less than one 

standard deviation from the most probable value of the standard 

reference material during this study. 

Methods for the analysis of organic wastewater and pharmaceutical compounds in water and sediment currently (2005) 

are considered research techniques rather than standard USGS 

production methods. For these methods, a laboratory reagant 
14 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to ENVIRONMENTAL SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

0.3 

1,7-Dimethylxanthine, 

dissolved 

r 2 = 0.733 

s = 0.054 

RPD = 6.8 

n = 11 

1.2 

Acetaminophen, 

dissolved 

r 2 = 0.997 

s = 0.023 

RPD = -7.1 

n = 12 

4 

3 

0.2 0.8 

2 

0.1 0.4 

1


0
 0 0 0 0.1 0.2 0.3 0 0.4 0.8 1.2 0 1 2 3 4 

0.15 

Cotinine, 

dissolved 

r 2 = 0.968 

s = 0.006 

RPD = 4.0 

n = 12 

0.05 0.8

0.04 0.6 

0.10 

0.03 

0.4 

0.02 

0.05 

0.2 

0.01 

0 0 0 

0 0.01 0.02 0.03 0.04 0.05 0 0.05 0.10 0.15 0 0.2 0.4 0.6 0.8 

0.3 

0.2 

0.1 

0 

Trimethoprim, 

dissolved 

r 2 = 0.992 

s = 0.007 

RPD = 10.4 

n = 12 

0 0.1 0.2 0.3


REPLICATE SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER


Figure 3. Quantile-quantile plots of replicate samples—Continued. 

Caffeine, 

dissolved 

r 2 = 0.998 

s = 0.041 

RPD = -6.9 

n = 12 

Carbamazepine, dissolved 

r 2 = 0.894 

s = 0.007 

RPD = 7.6 

n = 9 

Sulfamethoxazole, 

dissolved 

r 2 = 0.998 

s = 0.008 

RPD = -6.2 

n = 12 

spike for every compound analyzed and a laboratory blank are 

included with each environmental sample set (no more than 18 

samples) to evaluate method performance. Continuing calibration verification solutions are analyzed with each sample set to 

ensure that the instrument maintains calibration criteria. For the 

results to be quantitatively reported, verification concentrations 

must be within plus or minus 25 percent of the expected concentration. Low concentration standards [1 μg/L (microgram per 

liter) or less] are analyzed before and after environmental samples in each sequence to ensure that instrument sensitivity is 

maintained (S.D. Zaugg and others, written commun., 2005). 

For any given sample set, if an environmental sample had a concentration 10 times less than that determined in a laboratory 

blank associated with that sample set, then the environmental 

concentration was reported as less than the method detection 

limit. This was done to prevent any possible bias associated 

with laboratory contamination. 

Summaries of the quality-assurance data for laboratory 

spikes and blanks analyzed with environmental samples in this 

study are given in tables 13 and 14, at the back of this report. 

The mean recovery for organic wastewater compounds laboratory spikes was 75 percent in water samples and 73 percent in 

sediment samples in this study. For pharmaceutical compounds, 

the mean recovery was 60 percent in water samples and 25 percent in sediment samples. These data indicate that, in some 

cases, environmental concentrations may be under-reported. 

However, as method development progresses, these recoveries 

are expected to improve. 

Detailed information about the method performance of 

organic wastewater compounds is reported in Zaugg and others, 

2002; S.D. Zaugg and others, written commun., 2005). Mean 
8 6 

17-ȕ-Estradiol 

r 2 = 0.945 

s = 0.354 

RPD = 2.2 

n =56 

1.2

5


6


0.8 4


4
 3 

0.4 

2


2


1 

0 0 0 0.4 0.8 1.2 

0 2 4 6 8 0 

0 1 2 3 4 5 6 

14 2.0 

Acetophenone

r 2 = 0.927 

s = 0.103 

RPD = 3.5 

n = 56 

0.6


12


1.5 10 0.4


8
 1.0


6


0.2


4
 0.5 

2


 0 
 0 0

0 2 4 6 8 10 12 14 0 0.5 1.0 1.5 2.0 0 0.2 0.4 0.6 

0.8 0.6

Atrazine 

r 2 = 0.995 

s = 0.017 

RPD = 14.5 

n = 5 

1.0

0.8 

0.6 

0.4 

0.6 

0.4 

0.4 

0.2 

0.2 

0.2


0 
 0 0 

0 0.2 0.4 0.6 0.8 0 0.2 0.4 0.6 0 0.2 0.4 0.6 0.8 1.0 

5 

4 

0.6 0.6 

0.4 

3 

2 

0.4 

0.2 0.2 

1


0 
 0 

BHA 

(butylated hydroxyanisole) 

r 2 = 1 

s = 0.035 

RPD = 3.2 

n = 56 

0 0 0.2 0.4 0.6 0 0.2 0.4 0.6 0 1 2 3 4 5 

17-Į-Ethynyl estradiol 

r 2 = 1 

s = <0.001 

RPD = 9.6 

n = 7 

4-Tert-octylphenol 

r 2 = 0.969 

s = 0.078 

RPD = 11.7 

n = 7.0 

5-Methyl-1Hbenzotriazole 

r 2 = 0.964 

s = 0.481 

RPD = 3.9 

n = 17 

Anthracene 

r 2 = 0.926 

s = 0.033 

RPD = 10.7 

n = 56 

Anthraquinone

r 2 = 0.921 

s = 0.077 

RPD = 5.9 

n = 6 

Benzo[a]pyrene 

r 2 = 0.630 

s = 0.117 

RPD = 7.7 

n = 56 

Benzophenone 

r 2 = 0.962 

s = 0.042 

RPD = 15.9 

n = 7 

Bisphenol A 

r 2 = 0.927 

s = 0.294 

RPD = 2 

n = 56 

REPLICATE SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Figure 3. Quantile-quantile plots of replicate samples—Continued.

ENVIRONMENTAL SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Methods 15 
1.2

60 

0.8 70

0.6 50 

0.8 

40 

0.4 

30 

0.4 20 0.2


10


0 

0 0.2 0.4 0.6 0.8 

0 

Caffeine, 

total 

r 2 = 0.901 

s = 4.027 

RPD = 2.4 

n = 56 

0 10 20 30 40 50 60 70 0 

0 0.4 0.8 1.2 

1.0

Chlorpyrifos 

r 2 = 0.902 

s = 0.061 

RPD = 3.0 

n = 56 

400 0.6

0.8 

300 

0.4 0.6 

200 

0.4 

0.2 

100 0.2 

0 0 0 

0 0.2 0.4 0.6 0 0.2 0.4 0.6 0.8 1.0 0 100 200 300 400 

2.0 0.6

Diazinon 

r 2 = 0.940 

s = 0.030 

RPD = 2.1 

n = 56 

1.2

1.5 

0.4 0.8 

1.0 

0.2 0.4 

0.5 

0 0 0 0 0.5 1.0 1.5 2.0 0 0.2 0.4 0.6 0 0.4 0.8 1.2 

6 2.5

Fluoranthene 

r 2 = 0.564 

s = 0.259 

RPD = 6.4 

n = 56 

0.6

5 2.0 

4 0.4 1.5 

3 

1.0 

2 0.2 

0.5 

1 

0 0 

0 1 2 3 4 5 6 0 0.5 1.0 1.5 2.0 2.5 0 

0 0.2 0.4 0.6 

REPLICATE SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Bromacil 

r 2 = 0.768 

s = 0.104 

RPD = 2.8 

n = 7 

Carbaryl 

r 2 = 0.994 

s = 0.021 

RPD = 0.7 

n = 56 

ENVIRONMENTAL SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Carbazole 

r 2 = 0.968 

s = 0.035 

RPD = 14.2 

n = 7 

Cholesterol 

r 2 = 0.943 

s = 17.8 

RPD = 2.2 

n = 55 

Cotinine

r 2 = 0.705 

s = 0.320 

RPD = 0.9 

n = 25 

Dichlorvos 

r 2 = 0.646 

s = 0.238 

RPD = 12.0 

n = 7 

Estrone 

r 2 = 0.743 

s = 0.787 

RPD = 24.5 

n = 7 

Isophorone 

r 2 = 1 

s = <0.001 

RPD = 14.7 

n = 7 

Figure 3. Quantile-quantile plots of replicate samples—Continued.

16 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 
Methods 17 

ENVIRONMENTAL SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Metalaxyl 

r 2 = 1 

s = <0.001 

RPD = 0.6 

n = 7.0 

0.6 0.6 0.10

0.08 

0.4 0.4 0.06 

0.04 

0.2 0.2 

0.02 

0 0 0 

0 0.2 0.4 0.6 0 0.2 0.4 0.6 0 0.02 0.04 0.06 0.08 0.10 

2.5 4 140 

120 

2.0


3
 100 

1.5 

80 

2 

1.0 60 

40 1 0.5 

20


0 
 0 0 0.5 1.0 1.5 2.0 2.5 0 

0 

Naphthalene 

r 2 = 0.997 

s = 0.117 

RPD = 0.4 

n = 56 

1 2 3 4 0 20 40 60 80 100 120 140 

8 

OP1EO 

(octylphenol 

monoethoxylate) 

r 2 = 0.917 

s = 0.328 

RPD = 6.1 

n = 53 

9 

8 

7 

80

6 

6 

5 

60 

40 4 

4 

3


20
 2 2


1


0
 0 0 

0 20 40 60 80 0 2 4 6 8 0 1 2 3 4 5 6 7 8 9 

60 2.0 30

25 50

1.5 

40 20

30 1.0 15

20 10

0.5 

10 5

0 

Phenanthrene 

r 2 = 0.699 

s = 0.137 

RPD = 4.2 

n = 56 

0

0 10 20 30 40 50 60 0 0.5 1.0 1.5 2.0 0 5 10 15 20 25 30 

0

REPLICATE SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Isoquinoline 

r 2 = 0.833 

s = 0.082 

RPD = 5.2 

n = 7 

Metolachlor 

r 2 = 0.491 

s = 0.018 

RPD = 7.4 

n =7 

N,N-diethyltoluamide 

(DEET)

r 2 = 0.968 

s = 0.106 

RPD = 5.5 

n = 25 

NP1EO 

(nonylphenol 

monoethoxylate) 

r 2 = 0.954 

s = 5.42 

RPD = 0.4 

n = 56 

NP2EO 

(nonlyphenol 

diethoxylate) 

r 2 = 0.948 

s = 3.02 

RPD = 4.4 

n = 55 

OP2EO 

(octylphenol 

diethoxylate) 

r 2 = 0.977 

s = 0.162 

RPD = 7 

n = 53 

Para-cresol

r 2 = 0.905 

s = 3.86 

RPD = 5.8 

n = 56 

r 2 = 0.903 

s = 1.66 

RPD = 3.2 

n = 56 

Phenol 

Figure 3. Quantile-quantile plots of replicate samples—Continued. 
18 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 

2.0

Pyrene 

r 2 = 0.698 

s = 0.167 

RPD = 4.5 

n = 56 

0.6 12

10 

1.5 

0.4 8

1.0 6

0.2 4

0.5 

2 

0 0 0

0 0.2 0.4 0.6 0 0.5 1.0 1.5 2.0 0 2 4 6 8 10 12 

3.5 

Tributyl phosphate 

r 2 = 0.988 

s = 0.135 

RPD = 3.4 

n = 31 

8 10 

3.0 

8 6 2.5 

6 2.0 

4 

1.5 4 

1.0 2 

2 

0.5 

0 0 0

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 2 4 6 8 10 0 2 4 6 8 

Triphenyl phosphate 

r 2 = 0.984 

s = 0.033 

RPD = 3.2 

n = 49 

0.6 0.6 1.2

0.4 0.4 0.8 

0.2 0.2 0.4 

0 0 0

0 0.2 0.4 0.6 0 0.2 0.4 0.6 0 0.4 0.8 1.2 

0 0.1 0.2 0.3 0.4 0.5 

REPLICATE SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Prometon 

r 2 = 1 

s = <0.001 

RPD = 2.1 

n = 7 

Stigmastanol 

r 2 = 0.633 

s = 1.71 

RPD = 1.7 

n = 25 

ENVIRONMENTAL SAMPLE CONCENTRATION, IN MICROGRAMS PER LITER 

Tetrachloroethylene 

r 2 = 0.912 

s = 0.150 

RPD = 1.2 

n = 56 

Triclosan 

r 2 = 0.918 

s = 0.514 

RPD = 7.3 

n = 53 

Triethyl citrate 

r 2 = 0.185 

s = 0.212 

RPD = 5.3 

n = 7 

Tris (2-chloroethyl)phosphate 

r 2 = 0.716 

s = 0.081 

RPD = 3.1 

n = 56 

0 

0.1 

0.2 

0.3 

0.4 

0.5

Tris (dichlorisopropyl)phosphate 

r 2 = 0.463 

s = 0.043 

RPD = 3.3 

n = 49 

Figure 3. Quantile-quantile plots of replicate samples—Continued. 
set laboratory spike recovery for all organic wastewater compounds was 77 percent—a value consistent with that reported in 

this study. 

Cahill and others (2004) provide detailed information 

about the method performance for pharmaceutical compounds 

analyzed in this study. Data for some pharmaceutical compounds tested had low laboratory set spike recoveries and eventually were discontinued from the method during this study. 

Mean set spike recovery for the remaining pharmaceutical compounds was 60 percent (Cahill and others, 2004)—a value consistent with the method performance reported in this study. 

Benthic Macroinvertebrate Sampling and Metrics 

Aquatic communities were sampled according to established protocols for the assessment of benthic macroinvertebrates (Rabeni and others, 1997; Kansas Department of Health 

and Environmental, 2000). Eleven sites, 10 within the basin 

(sites 1–8, 12, and 13) and one outside the basin (site 19, fig. 1) 

were sampled. Site 19, the South Grand River near Freeman, 

was sampled because the South Grand River is a MDNR reference stream for the Blue/Lamine River Ecological Drainage 

Unit. Reference streams were chosen by the MDNR to represent 

the least impacted streams within an ecoregion. Metrics were 

determined from categorical enumeration of the samples in 

accordance with standardized procedures (table 15, at the back 

of this report). 

During 2002, only coarse substrate in riffles was sampled. 

This was the most faunally rich habitat that was common to all 

sites, and it consisted of exposed riffles with cobble and pebblesized bed material. Each stream site was sampled in March and 

September 2002. The sampling times chosen are MDNR recommended index periods designed to enhance comparisons 

with other reference conditions and coincide with the maturation of most benthic insects, thus simplifying laboratory identification (Cuffney and others, 1993), and were times of stable 

flow and temperature, which facilitated a stable biotic assemblage throughout the sampling period (Shackleford, 1988). 

Samples were collected during 4 to 5 days when no substantial 

rainfall was expected. Discharge, specific conductance, pH, 

water stream temperature, turbidity, and dissolved oxygen were 

monitored at the time of sample collection. Discharge was 

determined from existing stage-discharge relations or measured 

concurrently.

 In 2002, benthic macroinvertebrate samples were collected using a bottom aquatic kicknet [500 μm (micrometer) 

mesh] held snugly against the bed material immediately downstream from the sample collector. The sample collector then 

vigorously disturbed approximately 0.5 m2 (square meter) of 

the substrate in front of the kicknet to a depth of approximately 

10 cm (centimeters) for 2 minutes. This action dislodged the 

invertebrates and allowed the current to carry them into the net. 

All material that collected in the kicknet was deposited into a 

white collection tray large enough to accommodate the materials. Large debris, such as twigs, leaves, and substrate, were 

Methods 19 

inspected for attached organisms. Organisms present on the 

debris were washed off or removed with tweezers before the 

debris were removed from the sample. Additionally, the kicknet 

was inverted into the collection tray and backwashed and handpicked to remove clinging organisms. Six separate coarse substrate locations were sampled at each site. All organisms collected at each site were composited and the samples were placed 

on a 500-μm mesh screen and repeatedly rinsed with native or 

deionized water or both to remove excess fine sediment and 

organic matter. Sieved samples were then placed in 1-L (liter) 

wide-mouth plastic jars, preserved with a mixture of 90 percent 

ethanol, and stored at 25 °C (degrees Celsius) until analysis. 

After 2 weeks of storage, the supernatant liquid was decanted in 

the laboratory and replaced with fresh preservative. 

Samples were then gridded, sorted, and identified using 

quantitative processing methods with a target of 600 organisms 

as stated in the MDNR protocol (Rabeni and others, 1997; 

Moulton and others, 2000). Samples were identified to the lowest taxon possible, generally genus or species. These data then 

were used to determine benthic macroinvertebrate metrics 

(table 16, at the back of this report), including the MDNR core 

metrics for determination of aquatic life use support (ALUS). 

The four core MDNR metrics are total taxa richness, 

Ephemeroptera/Plecoptera/Trichoptera Taxa Richness (EPT), 

Missouri Biotic Index (MBI), and the Shannon-Weiner Diversity Index (Sarver, 2001). These four metrics are scored individually where 5 indicates full support, 3 indicates partial support, 

and 1 indicates non-support of aquatic life based on biological 

criteria for ecological drainage units in Missouri (Sarver, 2001). 

Stream Condition Index (SCI) is the sum of the four core metric 

scores and determines ALUS status. A SCI score of 16 to 20 

indicates a fully biologically supporting stream, a score of 10 to 

14 indicates a partially biologically supporting stream, and 

scores from 4 to 8 represent a non-biologically supporting 

stream (Rabeni and others, 1997). The SCI scores and ALUS 

status for stream sites sampled in 2002 are listed in table 17, at 

the back of this report. 

In 2003 and 2004, macroinvertebrate samples were collected using protocols established for Kansas streams (Kansas 

Department of Health and Environment, 2000). Results from 

the 2004 samples were not received at the time this report was 

written. This method was used because of the inter-jurisdictional nature of the basin and to allow for future comparison of 

methods. The Kansas Department of Health and Environment 

(KDHE) method was similar to the MDNR method used

in 2002 with the following exceptions. Samples were collected once per year during 1 week in late February or early 

March. All potential stream habitats and substrates present at 

each site were sampled. These included riffles, pools, leaf 

packs, woody debris, and vegetative margins along the banks 

under a variety of current velocities and with varying substrate 

sizes. Every habitat was not available at each site. Two field 

personnel simultaneously collected samples using a combination of kick-netting, sweeping, and hand-picking. The goal was 

to obtain the highest diversity possible with no more than 50 

percent of any species collected from any single habitat. Sam­
20 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 

pling lasted for no more than 1 hour or until 100 organisms were 

collected by each individual. Each of the two 100-organism 

samples was pooled into one 200-organism sample per site. 

Field personnel included both large and small organisms, and 

selection followed the morpho-species principle—any organism appearing different from those previously sorted was 

included in the sample. 

Kansas determines ALUS with five core metrics, of which 

only four (table 15) are from macroinvertebrate data (Kansas 

Department of Health and Environment, 2000). Benthic macroinvertebrate metric values determined from the 2003 sampling 

are listed in table 18, at the back of this report. Kansas ALUS 

determinations are taken from the mean, rather than the sum, of 

the individual core metric values (table 19, at the back of this 

report). The ALUS scoring criteria are as follows: individual 

metric score of 3 or site score between 2.5 and 3.0 indicates fullsupport, individual metric score of 2 or site score of 2.5 to 3.0 

indicates partial support, and individual metric score of 1 or site 

score of 1.0 to 2.49 indicates non-support. 

Data for 10 metrics (table 15) were scaled proportionally 

by transforming metric values from 1 to 100; the highest score 

was assigned 100 and the remaining values calculated as a proportion of that score. Sites were then ranked from highest (1) to 

lowest (11) for each sampling period based on the sum of the 

scores (table 20, at the back of this report). Macroinvertebrate 

taxa included in stream sampling during this study are listed in 

table 21, at the back of this report. 

Water-Quality Data 

Analytical results from lotic and lentic stream reaches are 

reported in tables 2 through 12. A brief summary of the data follows. 

Continuous Water Quality 

Continuous specific conductance, pH, temperature, turbidity, and dissolved oxygen data were collected on the Blue River 

and Brush Creek from April 1st to November 30th of each year. 

In both streams, changes to water quality often occurred quickly 

(fig. 2). 

Specific conductance values declined rapidly during 

storms when rainfall entered streams. It took several days, or 

weeks, for values to return to pre-storm levels. Specific conductance was higher on the Blue River [median value of 747 μS/cm 

(microsiemens per centimeter at 25 degrees Celsius)] than on 

Brush Creek (median value of 577 μS/cm). Mean daily pH values fluctuated over a larger range on Brush Creek than on the 

Blue River, although median values were similar (7.71 and 

7.76). Water temperatures were slightly higher on Brush Creek 

(21.2 °C) when compared to the temperatures in the Blue River 

(19.9 °C). The higher temperatures occurred in July and August 

of each year. Dissolved oxygen concentrations in Brush Creek 

[median concentration of 6.4 mg/L (milligrams per liter)] were 

lower than the concentration on the Blue River (median concentration of 7.6 mg/L). Thirty-six percent of the time the mean 

daily dissolved oxygen concentration was less than 5 mg/L in 

samples from Brush Creek as compared to only 2 percent of the 

time in samples from the Blue River (fig. 2). Rapid fluctuations 

in dissolved oxygen concentrations occurred at both sites in 

response to diurnal temperature fluctuations, algal growth, and 

storm events (Wilkison and others, 2002). Turbidity levels were 

higher in the Blue River than they were in Brush Creek (fig. 2). 

The median turbidity value in the Blue River was 24.7 Nephelometric Turbidity Units (NTU) and 8.0 NTU in Brush Creek. 

Nutrients 

Dissolved nitrite (NO2) plus nitrate (NO3) accounted for 

more than 70 percent of total nitrogen in base-flow samples 

from Indian Creek and the Blue River and only 17 percent in 

Brush Creek samples. Total ammonia plus organic nitrogen was 

the principal nitrogen species in Brush Creek base-flow samples. During stormflow, the principal nitrogen species at all 

sites was organic nitrogen. 

Median total nitrogen concentration in stream samples 

from Indian Creek during base flow was 11.6 mg/L compared 

to 5.36 mg/L in samples from the Blue River and 1.47 mg/L in 

samples from Brush Creek. Total nitrogen concentrations in 

stormwater samples from Indian Creek and the Blue River 

(median concentrations of 5.5 and 4.9 mg/L) were less than the 

median concentrations in the base-flow samples. However, 

median total nitrogen concentrations increased in stormwater 

samples collected from Brush Creek (2.4 mg/L) when compared to the concentration in base-flow samples. 

Dissolved phosphorus accounted for more than 90 percent 

of the total phosphorus in base-flow samples from Indian Creek 

and the Blue River and slightly more than 60 percent from samples collected from Brush Creek. In stormwater samples, this 

percentage declined for each stream and ranged from 26 to 35 

percent of the total phosphorus. 

In base-flow samples collected from Indian Creek, the 

median total phosphorus concentration was 2.62 mg/L compared to 0.91 mg/L in Blue River samples and 0.14 mg/L in 

Brush Creek samples. Median total phosphorus concentrations 

declined in Indian Creek in stormwater samples (1.40 mg/L), 

but still remained greater than in samples from the Blue River 

(1.24 mg/L) or Brush Creek (0.37 mg/L). 

Bacteria and Suspended Sediment 

Median densities of E. coli in base-flow samples from the 

Blue River were 380 col/100 mL (colonies per 100 milliliters) 

and were 355 col/100 mL in base-flow samples from Brush 

Creek; these densities were greater than those counted in samples from Indian Creek (115 col/100 mL). The E. coli densities 

were much greater in stormwater samples at all sites, with the 

greatest median density in samples from Brush Creek (24,000 

col/100 mL). Median E. coli densities in samples from Indian 
Creek (16,000 col/100 mL) were nearly identical to those from 

the Blue River (17,000 col/100 mL). 

Suspended sediment concentrations in base-flow samples 

generally were an order of magnitude lower than concentrations 

measured in stormwater samples. The median concentration of 

suspended sediment in base-flow samples collected from Brush 

Creek was 39 mg/L, 54 mg/L in samples from Indian Creek, and 

61 mg/L in Blue River samples. For stormwater samples, the 

median suspended sediment concentration increased to 110 mg/ 

L in Brush Creek, 387 mg/L in samples from Indian Creek, and 

765 mg/L in Blue River samples. 

Organic Wastewater Compounds 

Organic wastewater compounds detected most frequently 

in both base-flow and stormflow samples included animal and 

plant sterols (coprostanol, cholesterol, and stigmastanol), fragrances [acetyl-hexamethyl-tetrahydro-napthalene (AHTN) 

and hexadydro-hexamethyl-cyclopenta-benzopyran (HHCB)], 

plasticizers (bisphenol A), insect repellants [N,N-diethyl-mtoluamide (DEET)], anti-microbials (triclosan), and nonanionic detergent surfactants and metabolites (4-nonyl phenol 

and nonyl phenol diethoxlyate). Base-flow samples from Indian 

Creek had more frequent detections of organic wastewater compounds (31 percent) compared to samples from the Blue River 

(26 percent) and Brush Creek (22 percent). Detection frequencies increased in stormwater samples from Brush Creek and 

declined in samples collected from the Blue River and Indian 

Creek. 

Pharmaceutical Compounds 

Over-the-counter drugs accounted for more than threefourths of pharmaceutical compounds detected in stream samples. These included the stimulant caffeine and a metabolite, 

which accounted for one-half of the detections, and two painrelievers, acetaminophen and ibuprofen, which represented 16 

and 11 percent of the detections. Two antibiotics, sulfamethoxazole and trimethoprim, each accounted for 4 percent of detections. 

Detections of pharmaceutical compounds increased by 10 

percent in Brush Creek storm samples when compared to baseflow samples. There was a 15 to 34 percent decrease in detection frequency for stormwater samples collected from the Blue 

River and Indian Creek compared to base-flow samples. 

Biologic Data 

Overall, metric values were highest at sites in the upper 

reaches of the basin and values declined in downstream sites. 

Benthic macroinvertebrate metrics, enumerated in accordance 

with MNDR bioassessment protocols in 2002, indicated that 36 

percent of the sites sampled met the criteria for full support of 

Biologic Data 21 

aquatic life, 45 percent were considered partially supportive, 

and the rest considered to be non-supportive during part of the 

year. In 2003, using the KDHE bioassessment protocols, no site 

met the full-support criteria for streams. 

Summary 

Water-quality and biologic data were collected as part of a 

program to establish long-term trends in water quality in the 

basin, provide a foundation for future studies, and to aid in the 

development of a long-term overflow control plan and other 

basin management efforts for the city of Kansas City, Missouri. 

This report provides water-quality and biologic data at selected 

sites in the Blue River Basin from October 2000 to October 

2004 collected during base flow and stormflow. Data presented 

include measurements of physical properties, fecal indicator 

bacteria densities, and concentration of major ions, nutrients, 

trace elements, organic wastewater compounds, and selected 

pharmaceutical compounds in stream samples. Thirteen baseflow events and as many as seven storms were sampled as part 

of the study. Water-column profiles and bottom-sediment samples were collected at selected lentic reaches of Brush Creek. 

Continuous data for physical properties, including specific conductance, pH, temperature, turbidity, and dissolved oxygen, are 

provided for two sites. Descriptions of the data-collection and 

quality-assurance methods used during the study are documented. Benthic macroinvertebrate metrics were enumerated 

for 10 sites in the basin and 1 reference site using established 

protocols for Missouri and Kansas. 

Selected References 

Barber, L.B., Furlong, E.T., Keefe, S.H., Brown, G.H., and 

Cahill, J.D., 2002, Natural and contaminant organic compounds in the Boulder Creek Watershed, Colorado, during 

high-flow and low-flow conditions, 2000: U.S. Geological 

Survey Water-Resources Investigations Report 03–4045, 

Chapter 5, 42 p. 

Barbour, M.T., Gerritsen, J., Snyder, B.D., and Stribling, J.B., 

1999, Rapid bioassessment protocols for use in streams and 

rivers: Periphyton, benthic macroinvertebrates, and fish: U.S. 

Environmental Protection Agency, Office of Water, 

EPA 841-B-99-002, 339 p. 

Barnes, K.K., Christenson, S.C., Kolpin, D.W., Focazio, M.J., 

Furlong, E.T., Zaugg, S.D., Meyer, M.T., and Barber, L.B., 

2004, Pharmaceuticals and other organic wastewater contaminants within a leachate plume downgradient of a municipal 

landfill: Ground Water Monitoring and Remediation, v. 24, 

no. 2, p. 119–126. 

Barnes, K.K., Kolpin, D.W., Furlong, E.T., Zaugg, S.D., 

Meyer, M.T., Barber, L.B., and Focazio, M.J., 2005, Studies 

examine contaminants: Pharmaceuticals, hormones, and 
22 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 

other organic wastewater contaminants in ground-water 

resources: National Drillers Magazine, v. 26, no. 3, p. 38–39. 

Barnes, K.K., Kolpin, D.W., Meyer, M.T., Thurman, E.M., Furlong, E.T., Zaugg, S.D., and Barber, L.B., 2002, Water-quality data for pharmaceuticals, hormones, and other organic 

wastewater contaminants in U.S. streams, 1999–2000: U.S. 

Geological Survey Open-File Report 02–94, accessed 

November 2004 at URL 

http://toxics.usgs.gov/pubs/OFR-02-94/index.html. 

Becker, L.D., 1990, Simulation of flood hydrographs for small 

basins in Missouri: U.S. Geological Survey Water-Resources 

Investigations Report 90–4045, 40 p. 

Becker, L.D., Alexander, T.W., and Waite, L.A., 1983, Floods 

in Kansas City, Missouri and Vicinity, August 12–13, 1982: 

U.S. Geological Survey Water-Resources Investigations 

Report 83–4141, 35 p. 

Blevins, D.W., 1986, Quality of stormwater runoff in the Blue 

River Basin, Missouri and Kansas, July-October 1981 and 

April-July 1982: U.S. Geological Survey Water-Resources 

Investigations Report 84–4226, 131 p. 

Brush Creek Community Partners, 2004, Economic Development in the Brush Creek corridor: accessed December 2004 

at URL http://www.bccp.org. 

Cahill, J.D., Furlong, E.T., Burkhardt, M.R., Kolpin, D.W., and 

Anderson, L.G., 2004, Determination of pharmaceutical 

compounds in surface- and ground-water samples by solidphase extraction and high-performance liquid-chromatography-electrospray inonization mass spectrometry: Journal of 

Chromatography A, v. 1041, p. 171–180. 

Childress, C.J.O., Foreman, W.T., Connor, B.F., and Maloney, 

T.J., 1999, New reporting procedures based on long-term 

method detection levels and some considerations for interpretations of water-quality data provided by the U.S. Geological Survey National Water Quality Laboratory: U.S. Geological Survey Open-File Report 99–193, 19 p. 

Coffman, W.P., and Ferrington, L.C., 1996, Chironomidae, in

Merrit, R.W., and Cummins, K.W., eds., An introduction to 

aquatic insects of North America (3d ed.): Dubuque, Iowa, 

Kendall/Hunt Publishing, p. 635–754. 

Covert, T.C., Rice, E.W., Johnson, S.A., Berman, D., Johnson, 

C.H., and Mason, P.J., 1992, Comparing defined substrate 

tests for the detection of Escherichia coli in water: Journal of 

American Water Works Association, v. 84, p. 98–104. 

Cuffney, T.F., Gurtz, M.E., and Meador, M.R., 1993, Methods 

of collecting benthic invertebrate samples as part of the 

National Water-Quality Assessment Program: U.S. Geological Survey Open-File Report 93–406, 66 p. 

Daughton, C.G., and Jones-Lepp, T.L., eds., 2001, Pharmaceuticals and personal care products in the environment—Scientific and regulatory issues in American Chemical Society 

(ACS) Symposium Series 791: Washington, D.C., Oxford 

University Press, 396 p. 

Davenport, T.E., and Kelly, M.H., 1983, Water resource data 

and preliminary trend analysis for the Highland Silver Lake 

Monitoring and Evaluation Project, Madison County, Illinois, phase II: Springfield, Illinois Environmental Protection 

Agency, Report No. IEPA/WPC/83-013, 121 p. 

DeShon, J.E., 1995, Development and application of the Invertebrate Community Index (ICI), in Davis, W.S., and Simon, 

T.P., eds, Biological Assessment and Criteria: Tools for 

water resource planning and decision making: Boca Raton, 

Fla., Lewis Publishers, 415 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. 

Ferrington, L.C., 1987, Collection and identification of floating 

exuviae of Chironomidae for use in studies of surface-water 

quality: Kansas City, Kans., U.S. Environmental Protection 

Agency, Region VII, SOP no. FW130A, 39 p. 

Fishman, M.J., ed., 1993, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of inorganic and organic constituents in water and 

fluvial sediments: U.S. Geological Survey Open-File 

Report 93–125, 217 p. 

Fishman, M.J., and Friedman, L.C., 1989, Methods for determination of inorganic substances in water and fluvial sediments: U.S. Geological Survey Techniques of WaterResources Investigations, book 5, chap. A1, 545 p. 

Focazio, M.J., Koplin, D.W., and Furlong, E.T., 2004, Occurrence of human pharmaceuticals in water resources in the 

United States—A review, in Kummerer, K., ed., Pharmaceuticals in the environment—Sources, fate, effects, and risks 

(2d ed.): Berlin, Heidelberg, New York, Springer-Verlang, 

p. 91–102. 

Friedman, L.C., 1993, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of inorganic and organic constituents in water and fluvial 

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

93–125, 217 p. 

Hauck, H.S., and Nagel, C.D., 2002, Water resources 

data—Missouri, water year 2001: U.S. Geological Survey 

Water-Data Report MO-01-1, 504 p. (published annually). 

Hauck, H.S., and Nagel, C.D., 2003, Water resources 

data—Missouri, water year 2002: U.S. Geological Survey 

Water-Data Report MO-02-1, cd rom, 567 p. (published 

annually). 

Hauck, H.S., and Nagel, C.D., 2004, Water resources 

data—Missouri, water year 2003: U.S. Geological Survey 

Water-Data Report MO-03-1, cd rom, 776 p. (published 

annually). 

Hauck, H.S., and Nagel, C.D., 2005, Water resources 

data—Missouri, water year 2004: U.S. Geological Survey 

Water-Data Report MO-04-1, cd rom, 798 p. (published 

annually). 

Hauth, L.D., and Carswell, W.J., 1978, Floods in Kansas City, 

Missouri and Kansas, September 12–13, 1977: U.S. Geological Survey Water-Resources Investigations Report 78–63, 

36 p. 
Hayslip, G.A., 1993, USEPA Region 10 in-stream biological 

monitoring handbook (for wadeable streams in the Pacific 

Northwest): Seattle, Wash., U.S. Environmental Protection 

Agency, Region 10, Environmental Services Division, 

EPA-910-9-92-013, 75 p. 

Heberer, T., 2002a, Occurrence, fate, and removal of pharmaceutical residues in the aquatic environment: A review of 

recent research data: Toxicological Letters, v. 131, p. 5–17. 

Heberer, T., 2002b, Tracking persistent pharmaceutical residues from municipal sewage to drinking water: Journal of 

Hydrology, v. 266, p. 175. 

Heimann, D.C., and Femmer, S.R., 1998, Water quality, 

hydrology, and invertebrate communities of three remnant 

wetlands in Missouri, 1995–97: U.S. Geological Survey 

Water-Resources Investigations Report 98–4190, 64 p. 

Hilsenhoff, W.L., 1988, Rapid field assessment of organic pollution with a family-level biotic index: Journal of the North 

American Benthological Society, v. 7, no. 1, p. 65–68. 

Huggins, D.G., and Moffett, M.F., 1988, Proposed biotic and 

habitat indices for use in Kansas streams: Lawrence, Kansas 

Biological Survey Report no. 35, 183 p. 

Jorgensen, S.E., and Halling-Sorensen, B., 2000, Drugs in the 

environment: Chemosphere, v. 40, p. 691–699. 

Kansas Department of Health and Environment, 2000, Division 

of Environment, Quality Management Plan, Part III: Stream 

biological monitoring program, quality assurance management plan: Topeka, Bureau of Environmental Field Services, 

Technical Services Section, variously paged. 

Kerans, B.L., and Karr, J.R., 1994, A benthic index of biotic 

integrity (B-IBI) for rivers of the Tennessee Valley: Ecological Applications, v. 4, p. 768–785. 

Klemm, D.J., Lewis, P.A., Fulk, F., and Lazorchak, J.M., 1990, 

Macroinvertebrate field and laboratory methods for evaluating the biological integrity of surface waters: U.S. Environmental Protection Agency, Aquatic Biology Branch and 

Development and Evaluation Branch, Quality Assurance 

Research Division, Environmental Monitoring Systems Laboratory, EPA/600/4-90/030, 256 p. 

Kolpin, D.W., Furlong, E.T., Meyer, M.T., Thurman, E.M., 

Zaugg, S.D., Barber, L.B., and Buxton, H.T., 2002, Pharmaceuticals, hormones, and other organic wastewater contaminants in U.S. streams, 1999–2000: A national reconnaissance: Environmental Science and Technology, v. 36, no. 6, 

p. 1,202–1,211. 

Kolpin, D.W., Skopec, M., Meyer, M.T., Furlong, E.T., and 

Zaugg, S.D., 2004, Urban contribution of pharmaceuticals 

and other organic wastewater contaminants to streams during 

differing flow conditions: Science of the Total Environment, 

v. 328, p. 119–130. 

Lane, S.L., and Ray, R.G., eds., 1998, National field manual for 

the collection of water-quality data: Safety in field activities: 

U.S. Geological Survey Techniques of Water-Resources 

Investigations, book 9, chap. A9, accessed January 2002 at 

URL http://pubs.water.gov/twri9A9/. 

Lee, K.E., Barber, L.B., Furlong, E.T., Cahill, J.D., Kolpin, 

D.W., Meyer, M.T., and Zaugg, S.D., 2004, Presence and 

Selected References 23 

distribution of organic wastewater compounds in wastewater, 

surface, ground, and drinking waters, Minnesota, 2000–02: 

U.S. Geological Survey Scientific Investigations


Report 2004-5138, 47 p.


Lenat, D.L., 1983, Chironomid taxa richness: Natural variation 

and use in pollution assessment: Freshwater Invertebrate 

Biology, v. 2, no. 4, p. 192–198. 

Mid-America Regional Council, 1983, Nationwide urban 

runoff program: Kansas City Area Project Technical Report, 

variously paged. 

Mid-America Regional Council, 2003, Metro dataline, long 

range forecast for the Kansas City Metropolitan Area, 2002: 

accessed December 2003 at URL 

http://www.metrodatline.org/index.html. 

Moulton, S.R., II, Carter, J.L., Grotheer, S.A., Cuffney, T.F., 

and Short, T.M., 2000, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Processing, taxonomy, and quality control of benthic macroinvertebrates samples: U.S. Geological Survey Open-File 

Report 00–212, 49 p. 

Myers, D.N., and Wilde, F.D., eds., 2003, Biological indicators 

(3d ed.): U.S. Geological Survey Techniques of WaterResources Investigations, book 9, chap. A7, accessed January 2005 at http://pubs.water.usgs.gov/twri9A7/. 

National Climatic Data Center, 2003, Online database at URL 

http://www.ncdc.noaa.gov/oa/ncdc.html. 

Noble, R.T., Weisberg, S.B., Leecaster, M.K., McGee, C.D., 

Ritter, K., Walker, K.O., and Vainik, P.M., 2003, Comparison of beach bacterial water quality indicator measurement 

methods: Environmental Monitoring and Assessment, v. 81, 

p. 301-312. 

Plafkin, J.L., Barbour, M.T., Porter, K.D., Gross, S.K., and 

Hughes, R.M., 1989, Rapid bioassessment protocols for use 

in streams and rivers: Benthic macroinvertebrate and fish: 

U.S. Environmental Protection Agency, Office of Water 


Regulations and Standards, EPA 440-4-89-001, 170 p.


Poulton, B.P., 2003, Aquatic invertebrates of Lisbon Bottom 

Wetlands, Chapter 4, in Ecological dynamics of wetlands at 

Lisbon Bottom, Big Muddy National Fish and Wildlife Refuge, Missouri: U.S. Geological Survey Open-File 

Report 2004–1026, p. 83–114. 

Rabeni, C.F., Sarver, R.J., Wang, N., Wallace, G.S., Weiland, 

M., and Peterson, J.T., 1997, Biological criteria for streams 

of Missouri: Columbia, Missouri Cooperative Fish and Wildlife Research Unit, University of Missouri, 270 p. 

Radtke, D.B., ed., 1998, National field manual for the collection 

of water-quality data: Bottom-material samples: U.S. Geological Survey Techniques of Water-Resources Investigations, book 9, chap. A8, accessed January 2002 at URL 

http://pubs.water.usgs.gov/twri9A8/. 

Rae, J.G., 1989, Chironomid midges as indicators of organic 

pollution in the Scioto River Basin, Ohio: Ohio Journal of 

Science, v. 89, no. 1, p. 5–9. 

Rantz, S.E., and others, 1982a, Measurement and computation 

of streamflow—Volume 1. Measurement of stage and dis­
24 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas, 2000 to 2004 

charge: U.S. Geological Survey Water-Supply Paper 2175, 

p. 1–284. 

Rantz, S.E., and others, 1982b, Measurement and computation 

of streamflow—Volume 2. Computation of discharge: U.S. 

Geological Survey Water-Supply Paper 2175, p. 285–631.

Sarver, R.J., 2001, Semi-quantative macroinvertebrate stream 

bioassessment project procedure: Jefferson City, Missouri 

Department of Natural Resources, Division of Environmental Quality, 24 p. 

Schloesser, D.W., Edsall, T.A., Manny, B.A., and Nicols, S.J., 

1991, Distribution of Hexagenia nymphs and visible oil in 

sediment of the upper Great Lakes connecting channels: 

Hydrobiologia, v. 219, p. 345–352. 

Shackleford, B., 1988, Rapid bioassessments of lotic macroinvertebrate communities: Biocriteria development: Little 

Rock, Arkansas Department of Pollution Control and Ecology, 44 p. 

Stackleberg, P.E., Furlong, E.T., Meyer, M.T., Zaugg, S.D., 

Henderson, A.K., and Reissman, D.B., 2004, Persistence of 

pharmaceutical compounds and other organic wastewater 

contaminant in a conventional drinking-water-treatment 

plant: Science of Total Environment, v. 329, p. 99–113. 

U.S. Army Corps of Engineers, 2004, Blue River Channel Modification: accessed December 2004 at URL 

http://www.nwk.usace.army.mil/projects/blueriver/. 

U.S. Census Bureau, 2002, Population estimates: accessed 

December 2003 at URL http://www.census.gov/. 

U.S. Environmental Protection Agency, 1994, Combined sewer 

overflow (CSO) control policy, final policy: U.S. Federal 

Register, v. 59, no. 75, p. 18,688–18,698. 

U.S. Environmental Protection Agency, 1999, Combined sewer 

overflows—Guidance for monitoring and modeling: Washington, D.C., Office of Water, EPA 832-B-99-002, variously 

paged. 

U.S. Environmental Protection Agency, 2001, Report to Congress: Implementation and enforcement of the combined 

sewer overflow control policy: Washington, D.C., Office of 

Water, EPA 833-R-01-003, variously paged. 

U.S. Environmental Protection Agency, 2002, Summary of the 

August 14–15, 2002, experts workshop on public health 

impacts of sewer overflows: Washington, D.C., Office of 

Wastewater Management, EPA 833-R-02-002, 31 p. 

Wagner, R.J., Mattraw, H.C., Ritz, G.F., and Smith, B.A., 2000, 

Guidelines and standard procedures for continuous waterquality monitors: Site selection, field operation, calibration, 

record computation, and reporting: U.S. Geological Survey 

Water-Resources Investigations Report 00–4252, 53 p. 

Washington, H.G., 1984, Diversity, biotic, and similarity indices: A review with special relevance to aquatic systems: 

Water Research, v. 18, p. 653–694. 

Wilde, F.D., ed., 2004, National field manual for the collection 

of water-quality data: Cleaning of equipment for water sampling (version 2.0): U.S. Geological Survey Techniques of 

Water-Resources Investigations, book 9, chap. A3, accessed 

December 2004 at URL 

http://pubs.water.usgs.gov/twri9A3/. 

Wilde, F.D., ed., 2005, National field manual for the collection 

of water-quality data: Preparations for water sampling (version 2.0): U.S. Geological Survey Techniques of WaterResources Investigations, book 9, chap. A1, accessed 

December 2004 at URL 

http://pubs.water.usgs.gov/twri9A1/. 

Wilde, F.D., and Radtke, D.B., eds., 1998, National field 

manual for the collection of water-quality data: Field measurements: U.S. Geological Survey Techniques of WaterResources Investigations, book 9, chap. A6, accessed January 2005 at URL http://pubs.water.usgs.gov/twri9A6/. 

Wilde, F.D., Radtke, D.B., Gibs, J., and Iwatsubo, R.T., eds., 

1999a, National field manual for the collection of water-quality data: Collection of water samples: U.S. Geological 

Survey Techniques of Water-Resources Investigations, book 

9, chap. A4, accessed January 2002 at URL 

http://pubs.water.usgs.gov/twri9A4/. 

Wilde, F.D., Radtke, D.B., Gibs, J., and Iwatsubo, R.T., eds., 

1999b, National field manual for the collection of waterquality data: Processing of water samples: U.S. Geological 

Survey Techniques of Water-Resources Investigations, book 

9, chap. A5, accessed January 2002 at URL 

http://pubs.water.usgs.gov/twri9A5/. 

Wilde, F.D., Radtke, D.B., Gibs, J., and Iwatsubo, R.T., eds., 

2002, National field manual for the collection of water-quality data: Selection of equipment for water sampling (version 

2.0): U.S. Geological Survey Techniques of WaterResources Investigations, book 9, chap. A2, accessed 

December 2003 at URL 

http://pubs.water.usgs.gov/twri9A2/. 

Wilkison, D.H., Armstrong, D.J., and Blevins, D.B., 2002, 

Effects of wastewater and combined sewer overflows on 

water quality in the Blue River Basin, Kansas City, Missouri 

and Kansas, July 1998–October 2000: U.S. Geological 

Survey Water-Resources Investigations Report 02–4107, 

162 p. 

Yakub, G.P., Castric, D.A., Stadterman-Knauer, K.L., Tobin, 

M.J., Blazina, M., Heineman, T.N., Yee, G.Y., and Frazier, 

L., 2002, Evaluation of Colilert and Enterolert defined substrate methodology for wastewater applications: Water Environment Research, v. 74, no. 2, p. 131–135. 

Zaugg, S.D., Smith, S.G., Schroeder, M.P., Barber, L.B., and 

Burkhardt, M.R., 2002, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory—Determination of wastewater compounds by polystyrene-divinylbenzene solid-phase extraction and capillary-column gas 

chromatography/mass spectrometry: U.S. Geological Survey 

Water-Resources Investigations Report 01–4186, 37 p. 
TABLES


Tables 27 

Table 1. Site number, station name, and station identification for sampling sites and types of data collected at each site. 

[ID, identification; KS, Kansas; B, biologic; WQ, base-flow and/or stormflow water quality; MO, Missouri; Hwy., highway; C, continuous physical properties; 

BM, water column and bottom sediment; WWTF, wastewater treatment facility; --, not assigned 

Site 

number Type of data 

(fig. 1) Station name Station ID Latitude Longitude collected 

1 Blue River near Stanley, KS 06893080 384845 0944031 B,WQ 

2 Blue River at Blue Ridge Boulevard Extension, Kansas City, MO 06893150 385324 0943452 B,WQ 

3 Indian Creek at 69 Hwy., Overland Park, KS 06893270 385513 0944216 B,WQ 

4 Indian Creek at Farley, Overland Park, KS 06893280 385600 0944139 B,WQ 

5 Tomahawk Creek at Tomahawk Creek Park, Overland Park, KS 385539094372100 385539 0943721 B,WQ 

6 Indian Creek at 103rd Street, Kansas City, MO 06893400 385631 0943616 B,WQ 

7 Blue River at Kansas City, MO 06893500 385726 0943331 B,C,WQ 

8 Blue River at Blue Parkway, Kansas City, MO 06893552 390206 0943136 B,WQ 

9 Brush Creek at Ward Parkway, Kansas City, MO 06893557 390159 0943619 WQ 

10 Brush Creek at Kansas City, MO 06893560 390222 0943504 BM,WQ 

11 Brush Creek at Rockhill Road, Kansas City, MO 06893562 390221 0943443 C,BM,WQ 

12 Brush Creek at Elmwood Avenue, Kansas City, MO 06893564 390211 0943152 B,BM,WQ 

13 Blue River at Stadium Drive, Kansas City, MO 06893578 390330 0943042 B,WQ 

14 Blue River at 12th Street, Kansas City, MO 06893590 390548 0942926 WQ 

15 Blue River Main WWTF, Johnson County, KS -- 385114 0943658 --

16 Indian Creek Middle Basin WWTF, Overland Park, KS -- 385514 0944208 --

17 Tomahawk Creek WWTF, Overland Park, KS -- 385548 0943726 WQ 

18 Blue River WWTF, Kansas City, MO 390736094292700 390736 0942927 WQ 

19 South Grand River near Freeman, MO 06921582 383520 0942630 B,WQ 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004. 

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Ammonia + Ammonia, NO2 + NO3, Nitrite, 

Site Discharge, Specific pH Water Oxygen, organic N, as N, as N, as N, 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

instantaneous 

(ft3/s) 

conductance 

(μS/cm) 

(standard 

units) 

temperature 

(°C) 

Turbidity 

(NTU) 

dissolved 

(mg/L) 

total 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

1 03/06/02 1420 5.5 540 8.1 5.4 3.9 15.5 -- -- -- -- 

03/13/02 1315 7.0 560 8.2 10.4 9.6 15.3 0.55 <0.04 1.70 0.173 09/10/02 1145 .01 460 7.8 24.8 6.1 4.5 -- -- -- -- 11/08/02 1100 .50 585 7.2 7.9 4.7 6.4 -- -- -- -- 

2 08/29/01 1130 7.5 620 8.0 25.7 39 7.2 .60 E.01 E3.44 E.029 

10/31/01 1000 6.8 740 8.2 13.1 19 12.1 .96 <.04 6.84 .053 12/11/01 1045 4.7 825 8.6 4.3 5.2 16.0 .76 <.04 10.0 .031 03/05/02 1125 5.8 810 8.3 3.4 16 14.5 -- -- -- -- 03/13/02 1530 5.8 675 8.5 11.5 17 15.7 .55 <.04 1.70 .173 06/18/02 1300 20 555 7.9 22.9 20 7.6 .66 .05 2.42 .035 08/07/02 1245 2.8 790 8.4 28.5 19 10.2 .64 <.04 5.22 .045 09/10/02 1046 2.8 920 7.9 23.7 7.7 6.0 -- -- -- -- 11/05/02 1045 11 770 7.6 7.8 10 10.9 .63 <.04 6.96 .026 02/11/03 1000 3.6 1,140 8.3 2.3 14 15.2 3.1 1.93 12.3 .279 03/07/03 1500 8.8 1,220 8.7 7.3 9.8 18.4 -- -- -- -- 07/07/03 1130 3.6 680 8.2 30.3 15 9.2 .71 .04 4.54 .035 08/18/03 1045 3.5 975 8.1 27.5 6.5 8.1 .92 <.04 9.46 .040 11/25/03 1030 8.4 705 7.7 4.0 13 12.1 .67 <.04 4.59 .030 02/24/04 0900 72 700 7.9 6.0 20 11.3 -- -- -- -- 04/08/04 1000 44 605 8.0 14.2 10 11.6 .55 <.04 1.71 .045 09/03/04 0945 34 575 8.0 22.4 12 8.2 .52 <.04 1.98 .018 

3 08/22/01 0945 .72 735 7.7 25.5 31 6.0 .74 <.04 .19 .009 

11/01/01 1300 1.4 865 7.8 15.3 4.0 7.0 .54 <.04 .13 E.005 12/20/01 1015 .83 625 8.0 2.8 9.6 14.3 .29 <.04 .25 .015 03/07/02 1200 3.5 3,840 8.2 6.4 7.9 17.6 -- -- -- -- 03/21/02 1245 1.3 1,070 8.2 9.8 8.7 15.6 .43 <.04 .05 E.006 06/19/02 1030 2.2 745 8.2 24.7 2.6 13.4 .71 <.04 .70 .013 09/10/02 1344 .36 805 8.5 27.9 1.4 11.0 -- -- -- -- 03/07/03 1315 4.0 4,820 7.9 6.0 22 14.9 -- -- -- -- 02/24/04 1100 E5 1,360 7.9 5.3 11 13.4 -- -- -- -- 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Ammonia + Ammonia, NO2 + NO3, Nitrite, 

Site Discharge, Specific pH Water Oxygen, organic N, as N, as N, as N, 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

instantaneous 

(ft3/s) 

conductance 

(μS/cm) 

(standard 

units) 

temperature 

(°C) 

Turbidity 

(NTU) 

dissolved 

(mg/L) 

total 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

4 08/22/01 1100 1.4 975 7.5 25.1 7.1 7.0 1.3 0.10 15.7 0.153 

11/01/01 1145 10 1,010 7.4 21.7 3.4 6.1 1.4 .20 18.3 .137 12/20/01 1215 15 1,020 7.6 17.6 3.6 8.5 4.2 2.55 11.1 .307 03/06/02 1550 15 1,870 7.9 15.3 5.0 13.0 -- -- -- -- 03/21/02 1445 15 1,110 7.9 15.6 5.6 11.3 1.8 .14 13.3 .295 06/19/02 1130 14 895 7.5 22.7 3.7 8.1 1.5 .19 13.0 .185 09/10/02 1448 11 1,090 7.5 26.6 1.7 7.0 -- -- -- -- 

5 03/05/02 1410 8.6 2,400 8.1 4.1 6.3 16.3 -- -- -- -- 

03/22/02 1200 8.6 1,040 8.1 5.6 22 12.5 1.1 <.04 9.71 .194 09/11/02 1100 .61 860 8.0 22.9 2.9 6.5 -- -- -- -- 

6 08/22/01 1315 18 960 7.7 27.0 11 6.8 1.8 .53 11.3 .230 

11/01/01 0930 20 935 7.5 16.7 14 7.2 3.6 2.25 8.15 .348 11/01/01* 0931 -- -- -- -- -- -- 3.6 2.25 7.82 .345 12/20/01 1415 14 980 7.6 9.2 6.9 9.0 4.3 2.55 11.1 .307 03/05/02 1500 29 2,440 8.2 7.8 17 13.1 -- -- -- -- 03/22/02 1415 32 1,110 8.6 8.7 9.9 15.4 1.1 <.04 9.71 .194 06/19/02 1300 20 850 8.5 25.9 3.4 14.1 .93 <.04 5.53 .040 08/06/02 1400 21 1,000 7.6 27.9 5.6 8.6 2.1 .80 7.45 .151 09/11/02 1030 21 1,120 7.5 23.1 4.1 6.2 -- -- -- -- 11/07/02 1230 36 870 7.8 12.1 5.6 10.1 1.7 .55 6.20 .124 02/12/03 0945 21 1,320 7.3 6.6 11 10.0 5.3 3.42 12.8 .517 07/07/03 0945 20 940 7.8 27.5 5.8 8.6 1.6 .34 9.06 .232 08/18/03 0930 18 995 7.4 27.6 11 6.3 2.0 .52 11.4 .261 12/02/03 0930 23 985 6.9 8.7 4.7 7.2 3.9 2.08 10.7 .392 04/13/04 0945 30 1,070 7.8 11.8 5.0 10.0 2.8 1.0 7.10 .728 09/03/04 1400 36 905 8.4 25.9 <1 14.2 .96 .04 6.40 .078 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Ammonia + Ammonia, NO2 + NO3, 

Site Discharge, Specific pH Water Oxygen, organic N, as N, as N, Nitrite, as N

number 

(fig. 1) 

Sample 

date 

Sample 

time 

instantaneous 

(ft3/s) 

conductance 

(μS/cm) 

(standard 

units) 

temperature 

(°C) 

Turbidity 

(NTU) 

dissolved 

(mg/L) 

total 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

7 08/29/01 0945 60 680 7.9 25.9 39 6.6 0.92 <0.04 E5.52 E0.068 

10/31/01 1145 29 985 7.7 14.2 5.2 8.7 1.4 .16 11.3 .493 12/10/01 1300 30 1,000 7.8 6.9 5.2 10.2 3.1 1.47 8.66 .558 03/05/02 1030 65 1,650 8.0 2.7 8.4 13.2 -- -- -- -- 03/14/02 0945 43 950 8.1 11.4 24 10.8 .99 .13 4.05 .130 06/18/02 1500 60 670 8.2 24.4 13 8.5 .71 <.04 3.91 .018 06/18/02* 1501 -- -- -- -- -- -- .83 <.04 4.06 .017 08/07/02 1030 25 965 7.7 26.9 20 6.1 1.3 .19 7.49 .207 09/09/02 1428 25 895 7.7 27.6 19 7.6 -- -- -- -- 11/05/02 1245 47 860 7.7 9.4 9.6 10.0 1.3 .30 6.53 .130 02/11/03 1145 24 1,290 7.8 4.3 7.8 12.5 3.0 1.08 11.7 .482 03/06/03 1600 40 2,000 8.1 3.9 12 15.2 -- -- -- -- 07/08/03 1145 25 890 7.9 29.4 13 6.6 1.1 E.03 7.19 .081 07/08/03* 1146 -- -- -- -- -- -- .97 E.03 7.14 .083 08/19/03 0945 20 960 7.6 28.5 33 6.2 1.2 <.04 8.71 .098 11/25/03 1245 38 600 7.6 4.9 30 11.5 1.2 .17 3.65 .096 02/24/04 1320 116 1,040 8.0 6.4 16 11.6 -- -- -- -- 04/07/04 1140 88 775 8.0 16.5 11 11.6 .86 <.04 2.61 .212 09/09/04 1100 87 600 7.9 20.8 12 7.8 .65 <.04 3.06 .027 

9 06/13/01 1015 1.4 930 7.6 25.9 3.4 9.3 .66 .08 1.48 .300 

10/30/01 0945 .64 770 7.6 13.3 4.3 8.0 .46 E.03 E.03 E.007 12/07/01 1000 .38 725 7.5 8.0 5.6 6.5 .40 <.04 E.03 <.008 12/07/01* 1001 -- -- -- -- -- -- .53 <.04 E.03 <.008 03/18/02 1245 .58 1,300 7.9 9.3 5.2 12.8 .41 <.04 .09 .010 06/20/02 1130 .74 650 8.0 27.9 3.8 10.9 .61 .04 .09 E.006 08/01/02 1020 .77 535 7.9 30.4 5.3 6.6 .92 .04 .09 .010 11/06/02 1000 1.2 525 7.4 8.0 27 8.2 .51 .05 .75 .032 02/13/03 1000 .70 1,390 7.9 3.2 1.4 13.4 .33 .05 .76 .016 02/13/03* 1001 -- -- -- -- -- -- .33 .05 .75 .016 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Ammonia + Ammonia, NO2 + NO3, Nitrite, 

Site Discharge, Specific pH Water Oxygen, organic N, as N, as N, as N, 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

instantaneous 

(ft3/s) 

conductance 

(μS/cm) 

(standard 

units) 

temperature 

(°C) 

Turbidity 

(NTU) 

dissolved 

(mg/L) 

total 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

9 07/09/03 0930 0.21 660 7.7 30.1 12 7.1 0.56 E0.03 0.07 <0.008 

08/20/03 0945 .35 730 7.6 28.6 7.5 6.1 .72 .14 .07 E.006 08/20/03* 0946 -- -- -- -- -- -- -- -- -- -- 11/20/03 0945 .24 470 6.9 10.1 13 3.0 .75 <.04 <.06 <.008 04/13/04 1145 .56 1,055 7.8 14.3 1.8 14.4 .52 <.04 .41 .017 08/18/04 1000 .27 810 8.1 25.7 <1 10.4 .70 <.04 .11 <.008 

11 06/13/01 1230 1.3 855 8.0 26.3 19 2.6 1.7 <.04 2.26 .258 

10/30/01 1145 .01 530 7.9 13.9 5.0 8.1 .90 .10 .46 .040 12/07/01 1145 1.6 315 7.1 10.2 23 .9 .96 .11 .10 .017 03/18/02 1500 .60 1,220 7.5 10.0 7.0 6.0 1.2 .35 .28 .028 06/20/02 1315 .27 330 8.7 26.7 6.7 11.5 1.2 <.04 <.05 <.008 08/01/02 1220 1.1 385 9.0 32.1 5.6 12.7 1.3 <.04 <.05 <.008 11/06/02 1145 1.5 390 7.5 8.2 9.6 9.1 .65 .15 .79 .046 02/13/03 1230 .96 1,610 8.3 5.0 7.2 15.9 2.6 .93 .65 .041 07/09/03 1130 .21 510 8.5 31.0 10 11.2 1.1 E.03 <.06 <.008 08/20/03 1145 .23 585 8.6 30.0 1.5 8.1 1.5 <.04 <.06 <.008 11/20/03 1330 .44 590 7.4 11.5 11 3.2 1.2 <.04 .12 .030 04/13/04 1330 .64 650 8.6 13.1 6.4 11.7 .89 <.04 <.06 <.008 08/19/04 1030 .10 775 8.4 24.7 <1 7.7 .74 <.04 <.06 <.008 

13 03/06/03 0930 30 1,680 7.6 .6 14 13.7 -- -- -- -- 

07/08/03 0930 26 810 7.7 28.4 41 5.6 .86 .06 4.33 .045 08/19/03 1215 19 905 7.7 29.6 39 7.6 .92 E.03 5.39 .048 12/02/03 1230 42 805 7.4 4.8 16 11.4 1.4 .48 5.83 .190 12/02/03* 1231 -- -- -- -- -- -- 1.4 .49 5.76 .187 02/24/04 1520 150 1,210 7.8 5.4 18 11.9 -- -- -- -- 04/08/04 1300 86 805 8.3 17.1 15 13.5 .74 <.04 2.07 .115 09/10/04 1030 83 690 7.6 21.7 33 7.8 .60 .03 2.21 .031 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Ammonia + Ammonia, NO2 + NO3, Nitrite, 

Site Discharge, Specific pH Water Oxygen, organic N, as N, as N, as N, 

number 

(fig. 1) 

Sample 

date

Sample 

time 

instantaneous 

(ft3/s) 

conductance 

(μS/cm) 

(standard 

units) 

temperature 

(°C) 

Turbidity 

(NTU) 

dissolved 

(mg/L)

total 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

dissolved 

(mg/L) 

14 08/29/01 1400 44 675 8.0 28.5 54 7.7 0.07 E0.07 E3.33 E0.241 

10/31/01 1345 29 935 8.1 13.3 33 12.6 .97 .07 7.03 .107 12/11/01 1430 41 965 8.0 6.6 18 13.6 2.0 .91 7.93 .305 03/04/02 1130 64 1,440 7.9 1.2 21 14.0 -- -- -- -- 03/14/02 1500 66 1,010 8.1 14.6 26 11.8 1.2 .29 3.49 .095 06/20/02 1400 48 705 8.3 29.4 13 12.8 .87 .09 2.97 .028 08/06/02 1120 31 850 7.7 29.2 31 6.1 .90 .11 5.00 .060 08/06/02* 1121 -- -- -- -- -- -- .90 .13 5.00 .060 09/09/02 1106 24 940 7.6 26.1 100 5.9 -- -- -- -- 11/07/02 1015 47 810 7.6 8.3 26 10.4 1.1 .28 4.87 .072 02/12/03 1230 24 1,330 8.1 3.6 9.5 15.6 2.0 .75 10.8 .193 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Carbon Carbon Biochemica

Site Phosphorus, Phosphorus, Escherichia Fecal Total Chloride, Suspended organic, organic, oxygen 

number Sample Sample dissolved total coli coliform coliform dissolved sediment dissolved total demand 

(fig. 1) date time (mg/L) (mg/L) (col/100 mL) (col/100 mL) (col/100 mL) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

1 03/06/02 1420 -- -- -- -- -- -- -- -- -- -- 

03/13/02 1315 0.30 0.30 a7 -- -- 74 29 4.9 4.9 -- 

09/10/02 1145 -- -- -- -- -- -- -- -- -- -- 11/08/02 1100 -- -- -- -- -- -- -- -- -- -- 

2 08/29/01 1130 .43 .47 a380 -- -- -- 55 4.9 11.1 -- 

10/31/01 1000 1.16 1.28 a300 -- -- -- 51 7.4 8.3 -- 12/11/01 1045 1.64 1.64 a20 -- -- -- 50 5.7 5.9 -- 

03/05/02 1125 -- -- -- -- -- -- -- -- -- -- 03/13/02 1530 .30 .30 a100 -- -- 74 52 4.9 4.9 -- 

06/18/02 1300 .31 .36 a7,600 -- -- -- 79 5.0 5.4 -- 

08/07/02 1245 .81 .86 a<1 -- -- -- 48 6.3 6.3 -- 

09/10/02 1046 -- -- -- -- -- -- -- -- -- -- 11/05/02 1045 1.09 1.12 a80 90 -- -- 7 5.7 6.4 -- 

02/11/03 1000 2.33 2.46 5 90 1,600 144 57 6.2 8.1 -- 03/07/03 1500 -- -- -- -- -- -- -- -- -- -- 07/07/03 1130 .57 .61 45 130 8,700 -- 49 5.6 6.0 -- 08/18/03 1045 1.64 1.68 43 122 3,300 196 44 6.9 6.7 <2 11/25/03 1030 .80 .81 140 164 2,150 58 38 -- -- <2 02/24/04 0900 -- -- -- -- -- -- -- -- -- -- 04/08/04 1000 .15 .20 34 37 7,940 44 35 4.0 4.4 -- 09/03/04 0945 .13 .17 E250 E230 >4,840 33 55 4.6 5.2 -- 

3 08/22/01 0945 E.04 .06 -- -- -- -- 57 7.7 9.3 -- 

11/01/01 1300 E.05 .08 a65 -- -- -- 53 6.2 7.9 -- 12/20/01 1015 E.06 E.04 a42 -- -- -- 39 3.2 4.1 -- 03/07/02 1200 -- -- -- -- -- -- -- -- -- -- 03/21/02 1245 <.06 E.05 a45 -- -- 173 76 4.0 4.5 -- 06/19/02 1030 <.06 E.03 a860 -- -- -- 5 4.4 5.2 -- 

09/10/02 1344 -- -- -- -- -- -- -- -- -- -- 03/07/03 1315 -- -- -- -- -- -- -- -- -- -- 02/24/04 1100 -- -- -- -- -- -- -- -- -- -- 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Carbon Carbon Biochemica

Site Phosphorus, Phosphorus, Escherichia Fecal Total Chloride, Suspended organic, organic, oxygen 

number Sample Sample dissolved total coli coliform coliform dissolved sediment dissolved total demand 

(fig. 1) date time (mg/L) (mg/L) (col/100 mL) (col/100 mL) (col/100 mL) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

4 08/22/01 1100 3.54 3.44 -- -- -- -- 62 8.3 8.0 -- 

11/01/01 1145 4.32 4.32 a270 -- -- -- 54 7.7 9.7 -- 

12/20/01 1215 3.67 3.51 a95 -- -- -- 60 7.8 9.0 -- 

03/06/02 1550 -- -- -- -- -- -- -- -- -- -- 03/21/02 1445 3.70 3.56 a230 -- -- 146 57 8.1 9.5 -- 

06/19/02 1130 3.10 3.02 a1,100 -- -- -- 3 7.2 8.5 -- 

09/10/02 1448 -- -- -- -- -- -- -- -- -- -- 

5 03/05/02 1410 -- -- -- -- -- -- -- -- -- -- 

03/22/02 1200 2.13 2.13 a10 -- -- 163 75 7.0 8.2 -- 

09/11/02 1100 -- -- -- -- -- -- -- -- -- -- 

6 08/22/01 1315 2.62 2.71 -- -- -- -- 66 9.4 9.7 -- 

11/01/01 0930 2.40 2.55 a1,200 -- -- -- 64 8.8 10.8 -- 

11/01/01* 0931 2.47 2.58 -- -- -- -- -- 9.0 11.6 -- 12/20/01 1415 3.67 3.51 a58 -- -- -- 3 8.8 11.4 -- 

03/05/02 1500 -- -- -- -- -- -- -- -- -- -- 03/22/02 1415 2.13 2.12 a<1 -- -- 163 56 7.0 8.2 -- 

06/19/02 1300 1.31 1.28 a180 -- -- -- 4 5.4 6.5 -- 

08/06/02 1400 2.82 2.73 a4,600 -- -- -- 48 8.0 10.0 -- 

09/11/02 1030 -- -- -- -- -- -- -- -- -- -- 11/07/02 1230 1.72 1.77 a1,100 1,100 -- -- 2 7.3 7.2 -- 02/12/03 0945 3.69 4.08 60 65 870 203 -- 11.1 14.1 -- 07/07/03 0945 2.69 2.67 200 300 6,900 -- 46 7.0 9.6 -- 08/18/03 0930 3.12 3.27 120 220 2,600 122 55 9.0 12.4 3.6 12/02/03 0930 3.62 3.53 35 25 15,500 116 49 -- -- 5.6 04/13/04 0945 1.86 2.05 110 128 >2,420 146 59 7.9 9.8 -- 09/03/04 1400 1.12 1.13 E265 E240 >4,840 92 49 5.5 7.6 -- 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Carbon Carbon Biochemica

Site Phosphorus, Phosphorus, Escherichia Fecal Total Chloride, Suspended organic, organic, oxygen 

number Sample Sample dissolved total coli coliform coliform dissolved sediment dissolved total demand 

(fig. 1) date time (mg/L) (mg/L) (col/100 mL) (col/100 mL) (col/100 mL) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

7 08/29/01 0945 0.78 0.86 a540 -- -- -- 61 5.2 8.1 -- 

10/31/01 1145 2.70 2.69 a40 -- -- -- 60 8.2 11.2 -- 

12/10/01 1300 2.89 3.18 a20 -- -- -- 48 13.1 10.0 -- 03/05/02 1030 -- -- -- -- -- -- -- -- -- -- 03/14/02 0945 .85 .86 a21 -- -- 131 65 6.2 6.7 -- 06/18/02 1500 .49 .54 a2,300 -- -- -- 15 5.3 5.8 -- 

06/18/02* 1501 .56 .54 a2,800 -- -- -- 13 5.1 6.6 -- 08/07/02 1030 2.32 2.33 a<1 -- -- -- 61 7.2 10.0 -- 

09/09/02 1428 -- -- -- -- -- -- -- -- -- -- 11/05/02 1245 1.79 1.83 a270 530 -- -- 14 7.1 7.0 -- 

02/11/03 1145 2.95 3.27 16 125 1,300 196 65 -- 12.2 -- 03/06/03 1600 -- -- -- -- -- -- -- -- -- -- 07/08/03 1145 1.66 1.73 79 139 10,000 -- 67 6.4 8.5 -- 07/08/03* 1146 1.68 1.74 77 141 >10,000 -- 59 6.3 7.8 -- 08/19/03 0945 2.28 2.43 100 200 >4,800 112 62 8.2 9.1 4.7 11/25/03 1245 .94 .98 1,700 1,770 >9,680 54 40 -- -- 3.6 02/24/04 1320 -- -- -- -- -- -- -- -- -- -- 04/07/04 1140 .45 .53 69 69 5,650 82 53 5.2 8.0 -- 09/09/04 1100 .49 .51 365 440 >4,800 48 33 6.2 9.6 -- 

9 06/13/01 1015 .08 .11 a570 -- -- -- 49 3.7 4.8 -- 

10/30/01 0945 E.04 .07 a80 -- -- -- 52 6.5 9.2 -- 

12/07/01 1000 .07 .10 a260 -- -- -- 44 5.1 6.2 -- 

12/07/01* 1001 .07 .10 -- -- -- -- 41 5.0 6.3 -- 03/18/02 1245 <.06 E.05 a26 -- -- 246 63 4.9 5.1 -- 

06/20/02 1130 E.04 .07 a550 -- -- -- 8 4.1 5.0 -- 

08/01/02 1020 .12 .17 a400 -- -- -- 23 7.9 9.0 -- 11/06/02 1000 .06 .10 a1,100 440 -- -- 43 6.7 5.7 -- 

02/13/03 1000 E.03 .04 1 <10 360 276 56 3.3 4.0 -- 02/13/03* 1001 E.02 E.04 -- -- -- 272 54 3.4 4.2 -- 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Carbon Carbon Biochemica

Site Phosphorus, Phosphorus, Escherichia Fecal Total Chloride, Suspended organic, organic, oxygen 

number Sample Sample dissolved total coli coliform coliform dissolved sediment dissolved total demand 

(fig. 1) date time (mg/L) (mg/L) (col/100 mL) (col/100 mL) (col/100 mL) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

9 07/09/03 0930 0.04 0.09 130 300 6,900 -- 46 4.8 7.3 -- 

08/20/03 0945 .10 .13 62 231 >9,700 75 50 7.3 11.4 5.5 08/20/03* 0946 -- -- -- -- -- -- -- -- -- 4.9 11/20/03 0945 .13 .21 8,200 E>600 >48,400 41 29 -- -- 6.8 04/13/04 1145 <.04 .05 10 17 >2,420 176 62 4.2 3.8 -- 08/18/04 1000 <.04 .04 90 133 2,022 107 42 5.6 6.5 -- 

11 06/13/01 1230 <.06 .12 aE120 -- -- -- 58 4.1 9.6 -- 

10/30/01 1145 .08 .14 a35 -- -- -- 32 5.0 8.2 -- 

12/07/01 1145 .27 .37 a830 -- -- -- 34 6.9 8.7 -- 

03/18/02 1500 .13 .17 a<1 -- -- 277 59 6.7 9.1 -- 

06/20/02 1315 .06 .19 a200 -- -- -- 2 6.6 9.8 -- 

11 08/01/02 1220 E.05 .18 a180 -- -- -- 24 9.5 13.9 -- 

11/06/02 1145 .06 .09 a720 280 -- -- 7 4.8 3.9 -- 02/13/03 1230 E.03 .16 3 20 140 374 66 6.5 11.2 -- 07/09/03 1130 .04 .15 77 140 >10,000 -- 26 7.2 10.9 -- 08/20/03 1145 .17 .37 140 290 9,700 65 24 10.6 15.3 240 

11 11/20/03 1330 .16 .31 7,300 E>1,770 >48,400 -- 40 -- -- 12 

04/13/04 1330 <.04 .09 2 8 >2,420 101 38 5.8 7.8 -- 08/19/04 1030 E.03 .08 425 495 >9,680 109 31 6.8 8.7 -- 

13 03/06/03 0930 -- -- -- -- -- -- -- -- -- -- 

07/08/03 0930 .82 .95 79 120 >10,000 -- 77 5.6 7.9 -- 08/19/03 1215 1.44 1.53 49 207 >4,800 102 75 7.2 9.4 4.2 12/02/03 1230 1.45 1.52 68 103 5,540 82 72 -- -- 2.8 12/02/03* 1231 1.46 1.52 81 152 5,910 83 -- -- -- 3.3 02/24/04 1520 -- -- -- -- -- -- -- -- -- -- 04/08/04 1300 .28 .37 16 30 14,100 89 57 5.1 6.7 -- 09/10/04 1030 .30 .35 505 590 >4,800 49 69 4.9 7.8 -- 
Table 2. Physical properties, nutrients, bacteria, and selected chemical concentrations in base-flow samples collected between June 2001 and September 2004.—Co

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; total concentrations from un

tions from filtered samples; +, plus; N, nitrogen; NO2 + NO3, nitrite plus nitrate; col/100 mL, colonies per 100 milliliters; --, no data; <, less than; E, estimated; *, replicate sample; >, greater than] 

Carbon Carbon Biochemica

Site Phosphorus, Phosphorus, Escherichia Fecal Total Chloride, Suspended organic, organic, oxygen 

number Sample Sample dissolved total coli coliform coliform dissolved sediment dissolved total demand 

(fig. 1) date time (mg/L) (mg/L) (col/100 mL) (col/100 mL) (col/100 mL) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

14 08/29/01 1400 0.39 0.51 -- -- -- -- 72 5.5 7.7 -- 

10/31/01 1345 1.17 1.36 a180 -- -- -- 75 6.4 10.1 -- 

12/11/01 1430 2.22 2.35 a460 -- -- -- 62 7.5 8.9 -- 03/04/02 1130 -- -- -- -- -- -- -- -- -- -- 03/14/02 1500 .59 .67 a170 -- -- 145 76 5.3 5.7 -- 06/20/02 1400 .30 .35 a310 -- -- -- 27 6.4 6.1 -- 08/06/02 1120 .73 .76 270 -- -- -- 69 6.1 7.0 -- 08/06/02* 1121 .72 .77 300 -- -- -- 65 5.9 7.3 -- 09/09/02 1106 -- -- -- -- -- -- -- -- -- -- 11/07/02 1015 1.20 1.31 a1,500 2,300 -- -- 54 5.8 6.1 -- 

02/12/03 1230 2.50 2.46 200 300 960 219 59 8.5 10.1 -- 

aMembrane filtration on m-TEC agar. 
Table 3. Dissolved major ions and trace elements in base-flow samples. 

[mg/L, milligrams per liter; μg/L, micrograms per liter; --, no data; **, field equipment blank; E, estimated; <, less than; *, replicate sample; M, presence verified, but not quantified] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Calcium, 

dissolved 

(mg/L) 

Magnesium, 

dissolved 

(mg/L) 

Potassium, 

dissolved 

(mg/L) 

Sodium, 

dissolved 

(mg/L) 

Acid 

neutralizing 

capacity, 

total, lab 

(mg/L) 

Alkalinity, 

dissolved 

(mg/L) 

Fluoride, 

dissolved 

(mg/L) 

Silica, 

dissolved 

(mg/L) 

Sulfate, 

dissolved 

(mg/L) 

2 03/13/02 

02/11/03 11/25/03 

1530 

1000 

1030 

81.1 

65.5 

78.5 

11.4 

20.1 

13.2 

4.38 

13.2 

7.17 

47.3 

113 

47.4 

179 

134 

--

--

--

167 

0.2 

.46 

.40 

2.08 

6.27 

7.10 

62.8 

154 

90.8 

3 03/21/02 1245 97.4 16.6 2.80 94.3 206 -- .30 1.50 79.7 4 03/21/02 1445 66.1 17.2 15.1 125 142 -- .80 15.1 131 6 03/22/02 

02/12/0312/02/03 

1415 

0945 

0930 

80.5 

58.5

56.2 

17.8 

19.9 

14.9 

10.9 

15.8 

15.3 

118 

153 

103 

159 

104 

--

--

--

106 

.60 

.57 

.60 

5.59 

9.16 

10.9 

122 

154 

138 

7 03/14/02 

02/11/03 02/11/03** 11/25/03 

0945 

1145 

1500 

1245 

83.8 

56.2 

.08 

58.3 

14.0 

17.4 

E.007 

10.8

6.93 

13.2 

<.10 

6.93 

92.4 

138 

<.09 

45.1 

175 

110 

2 

--

--

--

--

131 

.30 

.56 

<.10 

.30 

4.08 

6.71 

<.13 

6.16 

85.5 

144 

<.20 

75.9

9 03/18/02 

02/13/03 02/13/03* 11/20/03 

1245 

1000 

1001 

0945 

85.1 

61.7 

63.3 

54.0 

14.2 

15.3 

15.6 

6.3 

3.80 

6.28 

6.33 

5.86 

164 

172 

177 

27.6 

154 

115 

115 

--

--

--

--

129 

.20 

.44 

.45 

.20 

3.26 

4.41 

4.52 

6.84 

113 

141 

141 

45.9 

11 03/18/02 

02/13/03 11/20/03 

1500 

1230 

1330 

58.3 

67.1 

63.9 

6.98 

13.7 

8.18 

5.12 

7.35 

6.29 

175 

222 

41.9 

122 

137 

--

--

--

102 

.20 

.38 

.30 

4.97 

3.17 

3.94 

48.8 

109

69.4 

13 12/02/03 

12/02/03*

1230 

1231 

68.8 

67.9 

12.7 

12.6 

9.57 

9.29 

68.1 

67.6 

--

--

140 

141

.50 

.50 

7.89 

7.84

110 

110 

14 03/14/02 

02/12/03 

1500 

1230 

86.8 

68.6 

13.4 

16.7 

6.18 

11.9 

99.8 

155 

180 

123 

--

--

.30 

.51 

5.25 

5.41 

87.4 

149 
Table 3. Dissolved major ions and trace elements in base-flow samples.—Continued 

[mg/L, milligrams per liter; μg/L, micrograms per liter; --, no data; **, field equipment blank; E, estimated; <, less than; *, replicate sample; M, presence verified, but not quantified] 

Site Arsenic, Barium, Beryllium, Boron, Cadmium, Chromium, Cobalt, Copper, Iron, 

number Sample Sample dissolved dissolved dissolved dissolved dissolved dissolved dissolved dissolved dissolved 

(fig. 1) date time (μg/L) (μg/L) (μg/L) (μg/L) (μg/L) (μg/L) (μg/L) (μg/L) (μg/L) 

2	 03/13/02 1530 M 112 <0.5 60 <8 <10 <13 <6 44 

02/11/03 1000 <2 48.6 <.5 310 <8 <10 <8 <6 25 11/25/03 1030 1 80.5 <.4 100 <3 5 <3 E3 19 

3	 03/21/02 1245 M 191 <.5 40 <8 E6 <13 <6 60 4	 03/21/02 1445 2 71.3 <.5 270 <8 <10 <13 <6 36 6	 03/22/02 1415 3 91.4 <.5 200 <8 <10 <13 <6 34 

02/12/03 0945 <2 217 <.5 310 <8 <10 <8 E5 40 12/02/03 0930 1 45.4 <.4 230 <3 5 <3 6 46 

7	 03/14/02 0945 <2 117 <.5 120 <8 <10 <13 E3 34 

02/11/03 1145 <2 114 <.5 270 <8 <10 <8 E3 35 02/11/03** 1500 <2 <.9 <.5 <10 <8 <10 <8 <6 <10 11/25/03 1245 1 57.6 <.4 100 <3 4 <3 E4 28 

9	 03/18/02 1245 E1 124 <.5 50 <8 <10 <13 <6 90 

02/13/03 1000 M 80.6 <.5 90 <8 <10 <8 <6 12 02/13/03* 1001 <2 81.9 <.5 90 <8 <10 <8 <6 12 11/20/03 0945 3 72.5 <.4 40 <3 E4 <3 E4 131 

11	 03/18/02 1500 E1 98.5 <.5 30 <8 <10 <13 <6 189 

02/13/03 1230 <2 82.5 <.5 80 <8 <10 <8 <6 62 11/20/03 1330 2 75.2 <.4 50 <3 5 <3 E4 61 

13	 12/02/03 1230 2 62.8 <.4 140 <3 5 <3 E4 43 

12/02/03* 1231 2 62.9 <.4 140 <3 5 <3 E3 35 

14	 03/14/02 1500 E1 199 <.5 110 <8 <10 <13 E3 47 

02/12/03 1230 <2 346 <.5 240 <8 <10 <8 <6 57 
Table 3. Dissolved major ions and trace elements in base-flow samples.—Continued 

[mg/L, milligrams per liter; μg/L, micrograms per liter; --, no data; **, field equipment blank; E, estimated; <, less than; *, replicate sample; M, presence verified, but not quantified] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Lithium, 

dissolved 

(μg/L) 

Manganese, 

dissolved 

(μg/L) 

Mercury, 

dissolved 

(μg/L) 

Molybdenum, 

dissolved 

(μg/L) 

Nickel, 

dissolved 

(μg/L) 

Selenium, 

dissolved 

(μg/L) 

Silver, 

dissolved 

(μg/L) 

Strontium, 

dissolved 

(μg/L) 

Vanadium, 

dissolved 

(μg/L) 

2 03/13/02 

02/11/03 11/25/03 

1530 

1000 

1030 

5 

44 

13 

60.1 

29.9 

18.1 

<0.01 

<.02 

<.02 

<50 

<30 

8 

<30 

<30 

M 

<2 

<3 

.5 

<9 

<9 

<3 

420 

380 

382 

<8 

<8 

<5 

3 03/21/02 1245 8 219 <.01 <50 <30 <2 <9 611 <8 4 03/21/02 1445 23 60.7 <.01 <50 <30 E2 <9 400 <8 6 03/22/02 

02/12/03 12/02/03 

1415 

0945 

0930 

20 

31 

33 

78.9 

111 

62.6 

<.01 

<.02 

<.02 

<50 

<30

12 

<30 

<30 

M 

E2 

<3 

.9 

<9 

<9 

<3 

481 

382 

318 

<8 

<8 

<5 

7 03/14/02 

02/11/03 02/11/03** 11/25/03 

0945 

1145 

1500 

1245 

11 

30 

<4 

14 

98.2 

118 

<2 

44.4 

<.01 

<.02 

<.02 

<.02 

<50 

E16 

<30 

9 

<30 

<30 

<30 

M 

<2 

<3 

<3 

.4 

<9 

<9

<9 

<3 

460 

350 

.7 

291 

<8 

<8 

<8 

<5 

9 03/18/02 

02/13/03 02/13/03* 11/20/03 

1245 

1000 

1001 

0945 

13 

28 

30 

8 

239 

101 

102 

607 

E.01

<.02

<.02 

<.02 

<50 

<30 

<30 

8 

<30

<30 

<30 

M 

<2 

E2 

E2 

E.3 

<9 

<9 

<9 

<3 

567 

374 

380 

245 

<8

<8 

<8 

<5 

11 03/18/02 

02/13/03 11/20/03 

1500 

1230 

1330 

10 

31 

11 

568 

319 

250 

E.01 

<.02 

<.02 

<50 

<30 

8 

<30 

<30 

M 

<2 

<3 

E.2 

<9 

<9 

<3 

443 

374 

311 

<8 

<8 

<5 

13 12/02/03 

12/02/03* 

1230 

1231 

22 

21 

175 

174 

<.02 

<.02 

13 

13 

M 

M 

.7 

.9 

<3 

<3 

339 

336 

<5 

<5 

14 03/14/02 

02/12/03 

1500 

1230 

10 

26 

174 

116 

E.01 

<.02 

<50 

<30 

<30 

<30 

<2 

<3 

<9 

<9 

467 

387 

<8 

<8 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004. 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

2,6- 3,4- 

Site 1,4-Dichloro- 17-α- 17-β- 1-Methyl- Dimethyl- 2-Methyl- Dichlorophenyl- 

number Sample Sample benzene Ethynyl estradiol Estradiol naphthalene naphthalene naphthalene isocyanate C

(fig. 1) date time 106-46-7 57-63-6 50-28-2 90-12-0 581-42-0 91-57-6 102-36-3 

1	 03/13/02 1315 <0.5 <5 <5 <0.5 <0.5 <0.5 <0.5 2	 08/29/01 1130 <.5 <5 <5 <.5 <.5 <.5 -- 

10/31/01 1000 <.5 <5 <5 <.5 <.5 <.5 -- 12/11/01 1045 <.5 <5 <5 <.5 <.5 <.5 -- 03/13/02 1530 <.5 <5 <5 <.5 <.5 <.5 E.20 06/18/02 1300 <.5 <5 <5 <.5 <.5 <.5 E.55 08/07/02 1245 <.5 <5 <5 <.5 <.5 <.5 E.21 11/05/02 1045 <.5 <5 <5 <.5 <.5 <.5 E.42 11/05/02a 1045 <.5 -- -- <.5 <.5 <.5 -- 

02/11/03 1000 <.5 <5 <5 <.5 <.5 <.5 E.16 07/07/03 1130 <.5 <5 <5 <.5 <.5 <.5 E2.7 04/08/04 1000 <.5 <5 <5 <.5 <.5 <.5 <.5 

3	 08/22/01 0945 <.5 <5 <5 <.5 <.5 <.5 -- 

11/01/01 1300 <.5 <5 <5 <.5 <.5 <.5 -- 12/20/01 1015 <.5 <5 <5 <.5 <.5 <.5 -- 03/21/02 1245 <.5 <5 <5 <.5 <.5 <.5 <.5 06/19/02 1030 <.5 <5 <5 <.5 <.5 <.5 E.04 

4	 08/22/01 1100 <.5 <5 <5 <.5 <.5 <.5 -- 

08/22/01* 1101 <.5 <5 <5 <.5 <.5 <.5 -- 11/01/01 1145 E.11 <5 <5 <.5 <.5 <.5 -- 12/20/01 1215 <.5 <5 <5 <.5 <.5 <.5 -- 03/21/02 1445 E.12 <5 <5 <.5 <.5 <.5 E.06 06/19/02 1130 E.15 <5 <5 <.5 <.5 <.5 E.16 

5	 03/22/02 1200 <.5 <5 <5 <.5 <.5 <.5 E.05 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 1,4-Dichloro­ 17-α­ 17-β­ 1-Methyl2,6­ Dimethyl­ 2-Methyl­ 3,4­ Dichlorophenyl­ 

number Sample Sample benzene Ethynyl estradiol Estradiol naphthalene naphthalene naphthalene isocyanate C

(fig. 1) date time 106-46-7 57-63-6 50-28-2 90-12-0 581-42-0 91-57-6 102-36-3 

6 08/22/01 1315 <0.5 <5 <5 <0.5 <0.5 <0.5 -- 

08/22/01* 1316 <.5 <5 <5 <.5 <.5 <.5 -- 11/01/01 0930 <.5 <5 <5 <.5 <.5 <.5 -- 11/01/01* 0931 <.5 <5 <5 <.5 <.5 <.5 -- 12/20/01 1415 <.5 <5 <5 <.5 <.5 <.5 -- 03/22/02 1415 <.5 <5 <5 <.5 <.5 <.5 E0.07 06/19/02 1300 <.5 <5 <5 <.5 <.5 <.5 E.12 08/06/02 1400 <.5 <5 E.11 <.5 <.5 <.5 E.36 11/07/02 1230 <.5 <5 <5 <.5 <.5 <.5 E.21 11/07/02a 1230 <.5 -- -- <.5 <.5 <.5 -- 

02/12/03 0945 E.04 <5 <5 <.5 <.5 <.5 E2.4 07/07/03 0945 <.5 <5 E.66 <.5 <.5 <.5 E1.9 04/13/04 0945 <.5 <5 <5 <.5 <.5 <.5 E.46 

7 08/29/01 0945 <.5 <5 <5 <.5 <.5 <.5 -- 

10/31/01 1145 <.5 <5 <5 <.5 <.5 <.5 -- 12/10/01 1300 <.5 <5 <5 <.5 <.5 <.5 -- 03/14/02 0945 <.5 <5 <5 <.5 <.5 <.5 E.12 06/18/02 1500 <.5 <5 <5 <.5 <.5 <.5 E.30 06/18/02* 1501 <.5 E.30 E.38 <.5 <.5 <.5 E.30 08/07/02 1030 <.5 <5 <5 <.5 <.5 <.5 E.25 11/05/02 1245 <.5 <5 <5 <.5 <.5 <.5 E.34 11/05/02a 1245 <.5 -- -- <.5 <.5 <.5 -- 02/11/03 1145 <.5 <5 <5 <.5 <.5 <.5 E.24 07/08/03 1145 <.5 <5 <5 <.5 <.5 <.5 E1.1 07/08/03* 1146 <.5 <5 <5 <.5 <.5 <.5 E1.7 04/07/04 1140 <.5 <5 <5 <.5 <.5 <.5 <.5 

8 08/29/01 1315 <.5 <5 <5 <.5 <.5 <.5 -- 

03/14/02 1215 <.5 <5 <5 <.5 <.5 <.5 E.16 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

2,6- 3,4- 

Site 1,4-Dichloro- 17-α- 17-β- 1-Methyl- Dimethyl- 2-Methyl- Dichlorophenyl- 

number Sample Sample benzene Ethynyl estradiol Estradiol naphthalene naphthalene naphthalene isocyanate C

(fig. 1) date time 106-46-7 57-63-6 50-28-2 90-12-0 581-42-0 91-57-6 102-36-3 

9	 06/13/01 1015 <0.5 <5 <5 <0.5 <0.5 <0.5 -- 

10/30/01 0945 <.5 <5 <5 <.5 <.5 <.5 -- 12/07/01 1000 <.5 <5 <5 <.5 <.5 <.5 -- 12/07/01* 1001 <.5 <5 <5 E.05 <.5 E.06 -- 03/18/02 1245 <.5 <5 <5 <.5 <.5 <.5 <0.5 06/20/02 1130 <.5 <5 <5 <.5 <.5 <.5 <.5 08/01/02 1020 <.5 <5 <5 <.5 <.5 <.5 <.5 11/06/02 1000 <.5 <5 <5 <.5 <.5 <.5 <.5 11/06/02a 1000 <.5 -- -- <.5 <.5 <.5 -- 

02/13/03 1000 <.5 <5 <5 <.5 <.5 <.5 <.5 02/13/03* 1001 <.5 E.62 E.48 <.5 <.5 <.5 E.08 07/09/03 0930 <.5 <5 <5 <.5 <.5 <.5 E.07 04/13/04 1145 <.5 <5 <5 <.5 <.5 <.5 <.5 

10 06/13/01 1000 <.5 <5 E.11 <.5 <.5 <.5 -- 11 06/13/01 1230 <.5 <5 <5 <.5 <.5 <.5 -- 

10/30/01 1145 <.5 <5 <5 <.5 <.5 <.5 -- 12/07/01 1145 <.5 <5 <5 <.5 <.5 <.5 -- 03/18/02 1500 <.5 <5 <5 <.5 <.5 <.5 <.5 06/20/02 1315 <.5 <5 <5 <.5 <.5 <.5 E.04 08/01/02 1220 <.5 <5 <5 <.5 <.5 <.5 E.12 11/06/02 1145 <.5 <5 <5 <.5 <.5 <.5 <.5 11/06/02a 1145 <.5 -- -- <.5 <.5 <.5 -- 02/13/03 1230 <.5 <5 <5 <.5 <.5 <.5 <.5 07/09/03 1130 .04 <5 <5 <.5 <.5 <.5 E.40 04/13/04 1330 <.5 <5 <5 <.5 <.5 <.5 <.5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

1,4-Dichlorobenzene 

106-46-7 

17-αEthynyl estradiol 

57-63-6

17-βEstradiol 

50-28-2 

1-Methylnaphthalene 

90-12-0 

2,6­

Dimethylnaphthalene 

581-42-0 

2-Methylnaphthalene 

91-57-6 

3,4­

Dichlorophenylisocyanate 

102-36-3 

C

12 06/13/01 

06/13/01** 

1430 

1431 

E0.12

<.5 

<5 

<5 

<5 

<5 

<0.5 

<.5 

<0.5 

<.5 

<0.5 

<.5 

--

--

13 07/08/03 

04/08/04 

0930 

1300 

<.5 

<.5 

<5 

<5 

<5 

<5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E1.2

<.5 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02* 11/07/02 11/07/02a 

02/12/03 

1400 

1345 

1430 

1500 

14001120 

1121 

1015 

1015 

1230 

<.5 

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

.03 

<5 

<5 

<5 

<5 

<5 <5 

<5 

<5 

E.44 

--

<5 

<5 

<5 

<5 

<5 <5 

<5 

<5 

E.40 

--

<.5 

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

E.02 

<.5 

<.5 

<.5 

<.5 

<.5 <.5

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5

<.5 

.02 

--

--

--

E.11 

E.28 E.38 

E.35 

E.08 

E.29 

--
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

4-Tert- 5-MethylSite 4-Cumyl- 4-Nonyl- 4-Octyl- octyl- 1H-benzo- Aceto- 

number Sample Sample phenol phenol phenol phenol triazole phenone AHTN A

(fig. 1) date time 599-64-4 104-40-5 1806-26-4 140-66-9 136-85-6 98-86-2 21145-77-7 

1 03/13/02 1315 <1 <5 <1 <1 <2 <0.5 <0.5 2 08/29/01 1130 <1 <5 <1 <1 <2 <.5 .07 

10/31/01 1000 <1 <5 <1 <1 <2 <.5 .17 12/11/01 1045 <1 <5 <1 <1 <2 <.5 .23 03/13/02 1530 <1 <5 <1 <1 <2 <.5 .23 06/18/02 1300 <1 <5 <1 <1 <2 <.5 .14 08/07/02 1245 <1 <5 <1 <1 <2 <.5 <.5 11/05/02 1045 <1 <5 <1 <1 <2 <.5 .36 11/05/02a 1045 <1 <5 <1 <1 <2 <.5 E.20 

02/11/03 1000 <1 <5 <1 <1 <2 <.5 .69 07/07/03 1130 <1 <5 <1 <1 E.37 E.15 E.08 04/08/04 1000 <1 <5 <1 E.03 <2 E.09 E.14 

3 08/22/01 0945 <1 <5 <1 <1 E.39 <.5 <.5 

11/01/01 1300 <1 <5 <1 <1 <2 <.5 <.5 12/20/01 1015 <1 <5 <1 <1 <2 <.5 <.5 03/21/02 1245 <1 <5 <1 <1 E.24 <.5 <.5 06/19/02 1030 <1 <5 <1 <1 <2 <.5 <.5 

4 08/22/01 1100 <1 <5 <1 <1 E.79 <.5 .10 

08/22/01* 1101 <1 <5 <1 <1 E.96 <.5 .18 11/01/01 1145 <1 .57 <1 <1 <2 <.5 1.6 12/20/01 1215 <1 <5 <1 <1 <2 <.5 .42 03/21/02 1445 <1 E.53 <1 <1 <2 <.5 .98 06/19/02 1130 <1 .82 <1 <1 E.70 <.5 .97 

5 03/22/02 1200 <1 <5 <1 <1 <2 <.5 <.5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

4-Tert­ 5-MethylSite 4-Cumyl­ 4-Nonyl­ 4-Octyl­ octyl­ 1H-benzo- Aceto- 

number Sample Sample phenol phenol phenol phenol triazole phenone AHTN A

(fig. 1) date time 599-64-4 104-40-5 1806-26-4 140-66-9 136-85-6 98-86-2 21145-77-7 

6 08/22/01 1315 <1 <5 <1 <1 0.36 <0.5 0.06 

08/22/01* 1316 <1 <5 <1 <1 E.22 <.5 .26 11/01/01 0930 <1 1.4 <1 <1 <2 <.5 .51 11/01/01* 0931 <1 2.2 <1 .28 <2 <.5 .82 12/20/01 1415 <1 1.8 <1 .22 <2 <.5 .60 03/22/02 1415 <1 <5 <1 <1 <2 <.5 E.36 06/19/02 1300 <1 .52 <1 <1 <2 <.5 .20 08/06/02 1400 <1 E1.7 <1 E.15 E.56 <.5 E.44 11/07/02 1230 <1 1.1 <1 <1 E.25 <.5 .46 11/07/02a 1230 <1 M <1 <1 <2 E.1 E.10 

02/12/03 0945 <1 <.5 <1 <1 E1.2 E.18 .65 07/07/03 0945 <1 E.90 <1 <1 E.49 E.14 E.47 04/13/04 0945 <1 E1.2 <1 E.06 <2 E.16 .57 

7 08/29/01 0945 <1 <5 <1 E.12 <2 <.5 E.16 

10/31/01 1145 <1 <5 <1 <1 <2 <.5 .26 12/10/01 1300 <1 .64 <1 <1 <2 <.5 .36 03/14/02 0945 <1 <5 <1 <1 <2 <.5 .22 06/18/02 1500 <1 <5 <1 <1 <2 <.5 .08 06/18/02* 1501 <1 <5 <1 <1 <2 <.5 .07 08/07/02 1030 <1 .59 <1 <1 <2 <.5 .17 11/05/02 1245 <1 .93 <1 <1 E.30 <.5 .58 11/05/02a 1245 <1 <5 <1 <1 <2 M E.10 02/11/03 1145 <1 1.6 <1 <1 <2 E.26 .59 07/08/03 1145 <1 <5 <1 <1 E.45 E.07 E.10 07/08/03* 1146 <1 <5 <1 <1 E.48 E.11 E.11 04/07/04 1140 <1 E.76 <1 E.03 <2 <.5 E.20 

8 08/29/01 1315 <1 <5 <1 <1 E.25 <.5 .08 

03/14/02 1215 <1 <5 <1 <1 <2 <.5 .23 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

4-Tert­ 5-MethylSite 4-Cumyl­ 4-Nonyl­ 4-Octyl­ octyl­ 1H-benzo- Aceto- 

number Sample Sample phenol phenol pheno phenol triazole phenone AHTN A

(fig. 1) date time 599-64-4 104-40-5 1806-26-4 140-66-9 136-85-6 98-86-2 21145-77-7 

9 06/13/01 1015 <1 <5 <1 <1 E0.47 <0.5 E0.07 

10/30/01 0945 <1 <5 <1 <1 <2 <.5 <.5 12/07/01 1000 <1 <5 <1 <1 <2 <.5 <.5 12/07/01* 1001 <1 <5 <1 <1 <2 <.5 <.5 03/18/02 1245 <1 <5 <1 <1 <2 <.5 <.5 06/20/02 1130 <1 <5 <1 <1 <2 <.5 <.5 08/01/02 1020 <1 <5 <1 <1 <2 <.5 <.5 11/06/02 1000 <1 <5 <1 <1 E.40 <.5 <.5 11/06/02a 1000 <1 <5 <1 <1 <2 E.10 <.5 

02/13/03 1000 <1 <5 <1 <1 <2 E.13 <.5 02/13/03* 1001 <1 E1 E.05 <1 <2 E.11 E.06 07/09/03 0930 E.05 <5 <1 <1 E.42 E.05 <.5 04/13/04 1145 <1 <5 <1 <1 <2 <.5 <.5 

10 06/13/01 1000 <1 <5 <1 <1 <2 <.5 E.05 11 06/13/01 1230 <1 <5 <1 <1 <2 <.5 <.5 

10/30/01 1145 <1 <5 <1 <1 <2 <.5 <.5 12/07/01 1145 <1 <5 <1 <1 <2 <.5 E.41 03/18/02 1500 <1 <5 <1 <1 <2 <.5 <.5 06/20/02 1315 <1 <5 <1 <1 <2 <.5 <.5 08/01/02 1220 <1 <5 <1 <1 <2 .54 <.5 11/06/02 1145 <1 <5 <1 <1 <2 <.5 <.5 11/06/02a 1145 <1 <5 <1 <1 <2 E.10 M 02/13/03 1230 <1 <5 <1 <1 E1.0 E.27 E.06 07/09/03 1130 <1 <5 <1 <1 E.50 E.05 <.5 04/13/04 1330 <1 <5 <1 <1 <2 <.5 <.5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

4-Cumylphenol 

599-64-4 

4-Nonylphenol 

104-40-5 

4-Octylphenol 

1806-26-4 

4-Tertoctylphenol 

140-66-9 

5-Methyl1H-benzotriazole 

136-85-6

Acetophenone 

98-86-2 

AHTN 

21145-77-7 

A

12 06/13/01 

06/13/01** 

1430 

1431 

<1 

<1 

<5 

<5 

<1 

<1 

<1 

<1 

E0.44 

<2 

<0.5 

<.5 

E0.12 

<.5 

13 07/08/03 

04/08/04 

0930 

1300 

<1 

<1 

<5 

E.68 

<1 

<1 

<1 

E.04

E.41 

<2 

E.08 

<.5 

E.04 

E.13 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02*11/07/02 11/07/02a 

02/12/03 

1400 

1345 

1430 1500

1400

1120 

1121 

1015 

1015 

1230 

<1 

<1 

<1 <1 

<1 

<1 

<1 

<1 

<1 

E.08 

<5

.68 

<5 <5 

.52 

E.80 

E.82

<5 

<5 

E1.7 

<1 

<1 

<1 <1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 <1 

<1 

E.12 

<1 

<1 

<1 

<1 

<2 

<2 

<2 <2 

<2 

<2 

<2 

<2 

<2 

E1.1 

<.5 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.20 

E.05 

E.26 

E.30 E.07

E.06 

E.05

E.05 

E.21 

E.10 

.58 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Bis(2­

Site Benzo- ethylhexyl)- Bisnumber Sample Sample Atrazine Benzo[a]pyrene phenone phthalate phenol A Bromacil BHA 

(fig. 1) date time 1912-24-9 50-32-8 119-61-9 117-81-7 80-05-7 314-40-9 25013-16-5 

1	 03/13/02 1315 0.04 <0.5 <0.5 <0.5 <1 <0.5 <5 2	 08/29/01 1130 -- <.5 <.5 -- E.14 E.04 <5 

10/31/01 1000 -- <.5 .06 -- E.10 E.06 <5 12/11/01 1045 -- <.5 .08 -- E.17 <.5 <5 03/13/02 1530 .05 <.5 <.5 <.5 <1 <.5 <5 06/18/02 1300 1.2 <.5 <.5 <.5 <1 <.5 <5 08/07/02 1245 .06 <.5 .06 <.5 <1 <.5 <5 11/05/02 1045 .02 <.5 .06 E3.6 <1 <.5 <5 11/05/02a 1045 -- <.5 M -- <1 <.5 <5 

02/11/03 1000 <.5 <.5 .26 E1.4 <1 <.5 <5 07/07/03 1130 E.12 <.5 E.05 -- <1 <.5 <5 

04/08/04 1000 E.11 <.5 <.5 -- <1 <.5 <5 

3	 08/22/01 0945 -- <.5 <.5 -- <1 <.5 <5 

11/01/01 1300 -- <.5 <.5 -- <1 <.5 <5 12/20/01 1015 -- <.5 <.5 -- E.09 <.5 <5 03/21/02 1245 E.01 <.5 <.5 <.5 <1 <.5 <5 06/19/02 1030 .09 <.5 <.5 E18 E.09 E.20 <5 

4	 08/22/01 1100 -- <.5 <.5 -- E.69 <.5 <5 

08/22/01* 1101 -- <.5 <.5 -- E.69 <.5 <5 11/01/01 1145 -- <.5 .18 -- E.16 <.5 <5 12/20/01 1215 -- <.5 .13 -- E.12 <.5 <5 03/21/02 1445 E.07 <.5 E.08 <.5 <1 <.5 <5 06/19/02 1130 .62 E.06 .20 <.5 E.16 <.5 <5 

5	 03/22/02 1200 <.5 <.5 <.5 <.5 <1 <.5 <5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Bis(2­

Site Benzo­ ethylhexyl)- Bisnumber Sample Sample Atrazine Benzo[a]pyrene phenone phthalate phenol A Bromacil BHA 

(fig. 1) date time 1912-24-9 50-32-8 119-61-9 117-81-7 80-05-7 314-40-9 25013-16-5 

6 08/22/01 1315 -- <0.5 <0.5 -- E0.67 <0.5 <5 

08/22/01* 1316 -- <.5 <.5 -- .67 <.5 <5 11/01/01 0930 -- <.5 .19 -- E.09 <.5 <5 11/01/01* 0931 -- <.5 .27 -- E.14 <.5 <5 12/20/01 1415 -- <.5 .23 -- E.17 <.5 <5 03/22/02 1415 E0.07 <.5 E.08 <0.5 <1 <.5 <5 06/19/02 1300 .27 <.5 .10 <.5 E.11 E.20 <5 08/06/02 1400 E.13 <.5 E.15 <.5 <1 <.5 <5 11/07/02 1230 .05 <.5 .10 <.5 <1 <.5 <5 11/07/02a 1230 -- <.5 E.10 -- M <.5 <5 

02/12/03 0945 -- <.5 E.39 <.5 <1 <.5 <5 07/07/03 0945 E.26 <.5 E.23 -- E.15 <.5 <5 04/13/04 0945 E.09 <.5 E.16 -- <1 <.5 <5 

7 08/29/01 0945 -- <.5 <.5 -- <1 E.06 <5 

10/31/01 1145 -- <.5 .07 -- <1 <.5 <5 12/10/01 1300 -- <.5 .31 -- E.24 <.5 <5 03/14/02 0945 .04 <.5 .06 <.5 E.09 E.05 <5 06/18/02 1500 <.5 <.5 <.5 <.5 <1 E.20 <5 06/18/02* 1501 .77 E.05 <.5 <.5 E.09 E..21 <5 08/07/02 1030 .20 <.5 .24 <.5 <1 <.5 <5 11/05/02 1245 .06 <.5 .21 E1.4 <1 <.5 <5 11/05/02a 1245 -- <.5 E.10 -- <1 <.5 <5 02/11/03 1145 .09 <.5 .19 <.5 <1 <.5 <5 07/08/03 1145 E.19 <.5 E.10 -- <1 <.5 <5 07/08/03* 1146 E.23 <.5 E.08 -- <1 E.09 <5 04/07/04 1140 E.10 <.5 <.5 -- <1 <.5 <5 

8 08/29/01 1315 -- <.5 <.5 -- E.16 E.04 <5 

03/14/02 1215 .04 E.07 .06 <.5 <1 <.5 <5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Bis(2­

Site Benzo- ethylhexyl)- Bisnumber Sample Sample Atrazine Benzo[a]pyrene phenone phthalate phenol A Bromacil BHA 

(fig. 1) date time 1912-24-9 50-32-8 119-61-9 117-81-7 80-05-7 314-40-9 25013-16-5 

9	 06/13/01 1015 -- <0.5 <0.5 -- <1 E0.04 <5 

10/30/01 0945 -- <.5 <.5 -- <1 E.05 <5 

12/07/01 1000 -- E.06 <.5 -- 1.9 <.5 <5 12/07/01* 1001 -- E.08 <.5 -- 1.6 <.5 <5 03/18/02 1245 0.01 <.5 <.5 <0.5 <1 <.5 <5 06/20/02 1130 .25 E.06 <.5 <.5 <1 <.5 <5 08/01/02 1020 .07 <.5 <.5 <.5 E.11 E.36 <5 11/06/02 1000 <.5 E.08 <.5 E5.4 E.09 <.5 <5 11/06/02a 1000 -- M <.5 -- M M <5 

02/13/03 1000 E.07 <.5 E.05 E12 <1 <.5 <5 02/13/03* 1001 E.11 E.06 E.12 <.5 E.17 .89 <5 07/09/03 0930 E.21 E.02 <.5 -- <1 <.5 <5 04/13/04 1145 <.5 <.5 <.5 -- <1 <.5 <5 

10 06/13/01 1000 -- <.5 <.5 -- <1 E.06 <5 11 06/13/01 1230 -- <.5 .05 -- <1 <.5 <5 

10/30/01 1145 -- <.5 <.5 -- <1 <.5 <5 12/07/01 1145 -- <.5 .10 -- E.88 <.5 <5 03/18/02 1500 .03 <.5 <.5 <.5 E.09 <.5 <5 06/20/02 1315 .12 <.5 <.5 <.5 E.10 E.21 <5 08/01/02 1220 .09 <.5 <.5 <.5 E.20 E.33 <5 11/06/02 1145 <.5 <.5 <.5 <.5 <1 <.5 <5 11/06/02a 1145 -- <.5 M -- M M <5 02/13/03 1230 E.08 <.5 E.09 <.5 E.13 <.5 <5 07/09/03 1130 E.13 <.5 E.03 -- E.11 <.5 <5 04/13/04 1330 <.5 <.5 <.5 -- <1 <.5 <5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Atrazine 

1912-24-9 

Benzo[a]pyrene 

50-32-8 

Benzophenone 

119-61-9 

Bis(2­

ethylhexyl)­

phthalate 

117-81-7 

Bisphenol A 

80-05-7 

Bromacil 

314-40-9 

BHA 

25013-16-5 

12 06/13/01 

06/13/01**

1430 

1431 

--

<0.5 

<0.5 

<.5

0.06 

<.5 

--

--

E0.09 

<1 

<0.5 

<.5 

<5 

<5 

13 07/08/03 

04/08/04 

0930 

1300

E.23 

<.5 

E.02 

<.5 

E.05 

E.06

--

--

E.10 

E.14 

<.5 

<.5 

<5 

<5 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02* 11/07/02 11/07/02a

02/12/03 

1400 

1345 

1430 

1500 1400 

1120 

1121 

1015 

1015

1230 

--

--

--

.03 .66 

E.10 

E.09 

.02 

E.13 

--

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 

E.07 

<.5

.07 

.26

<.5 

.05 

<.5 

<.5 

<.5 

E.10

E.37 

--

--

--

<0.5 

<.5 

<.5 

<.5 

<.5 

<.5 

--

E.16 

E.16 

E.20 

<1 

E.10 

<1 

<1 

<1 

M 

E.24 

E.05 

E.21 

<.5 

E.07 

E.21

E.06 

E.05 

<.5

M 

<.5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number Sample Sample Carbaryl Carbazole Chlorpyrifos Cholesterol Cotinine Diazinon Dichlorvos 

(fig. 1) date time 63-25-2 86-74-8 2921-88-2 57-88-5 486-56-6 333-41-5 62-73-7 

1	 03/13/02 1315 <1 <0.5 <0.5 <2 <1 <0.5 <1 2	 08/29/01 1130 <1 <.5 <.5 E.65 <1 .13 <1 

10/31/01 1000 <1 <.5 <.5 E1.1 <1 .10 <1 12/11/01 1045 <1 <.5 <.5 E.59 <1 <.5 <1 03/13/02 1530 <1 <.5 <.5 <2 <1 .01 <1 06/18/02 1300 <1 <.5 <.5 <2 <1 .14 <1 08/07/02 1245 <1 <.5 <.5 <2 .16 .06 <1 11/05/02 1045 <1 <.5 <.5 <2 <1 .03 <1 11/05/02a 1045 <1 <.5 <.5 <2 <1 M <1 

02/11/03 1000 E.27 <.5 <.5 E1.9 .22 <.5 <1 07/07/03 1130 <1 <.5 <.5 <2 <1 <.5 <1 04/08/04 1000 <1 <.5 <.5 <2 <1 <.5 <1 

3	 08/22/01 0945 <1 E.14 <.5 2.6 <1 .60 <1 

11/01/01 1300 <1 <.5 <.5 1.4 <1 <.5 <1 12/20/01 1015 <1 <.5 <.5 <2 <1 <.5 <1 03/21/02 1245 <1 <.5 <.5 E.64 <1 E.02 <1 06/19/02 1030 <1 <.5 <.5 <2 <1 .05 <1 

4	 08/22/01 1100 <1 <.5 <.5 E1.0 <1 .56 E.19 

08/22/01* 1101 <1 <.5 <.5 E1.8 <1 .58 E.20 11/01/01 1145 <1 <.5 <.5 E1.6 <1 <.5 <1 12/20/01 1215 <1 <.5 <.5 E.58 <1 <.5 <1 03/21/02 1445 <1 <.5 <.5 E1.3 <1 <.5 <1 06/19/02 1130 <1 <.5 <.5 3.8 .11 .07 <1 

5	 03/22/02 1200 <1 <.5 <.5 E.71 <1 <.5 <1 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number Sample Sample Carbaryl Carbazole Chlorpyrifos Cholesterol Cotinine Diazinon Dichlorvos 

(fig. 1) date time 63-25-2 86-74-8 2921-88-2 57-88-5 486-56-6 333-41-5 62-73-7 

6	 08/22/01 1315 <1 <0.5 <0.5 6.5 0.12 0.55 <1 

08/22/01* 1316 <1 <.5 <.5 4.8 <1 .53 <1 11/01/01 0930 <1 <.5 <.5 7.8 <1 <.5 <1 11/01/01* 0931 <1 <.5 <.5 16 .13 <.5 <1 12/20/01 1415 <1 <.5 <.5 7.8 <1 <.5 <1 03/22/02 1415 <1 <.5 <.5 E1.0 <1 E.01 <1 06/19/02 1300 <1 <.5 <.5 E.78 .11 .04 <1 08/06/02 1400 <1 <.5 <.5 4.0 <1 E.03 <1 11/07/02 1230 <1 <.5 <.5 E3.6 <1 <.5 <1 11/07/02a 1230 <1 <.5 <.5 E1.0 M <.5 <1 

02/12/03 0945 <1 <.5 <.5 10 E.37 <.5 <1 07/07/03 0945 <1 <.5 <.5 8.4 E.15 E.07 <1 04/13/04 0945 <1 <.5 <.5 10 <1 <.5 <1 

7	 08/29/01 0945 <1 <.5 <.5 E.91 <1 E.12 <1 

10/31/01 1145 <1 <.5 <.5 2.3 <1 .03 <1 12/10/01 1300 <1 <.5 <.5 5.4 <1 <.5 <1 03/14/02 0945 <1 <.5 <.5 2.7 <1 .01 <1 06/18/02 1500 <1 <.5 <.5 <2 <1 .04 <1 06/18/02* 1501 <1 <.5 <.5 E.62 .11 .05 <1 08/07/02 1030 <1 -- <.5 E1.9 .21 .06 <1 11/05/02 1245 <1 <.5 <.5 4.3 <1 .03 <1 11/05/02a 1245 <1 <.5 <.5 2.0 M M <1 02/11/03 1145 <1 <.5 <.5 E5.1 E.81 <.5 <1 07/08/03 1145 <1 <.5 <.5 E1.7 E.13 E.04 <1 07/08/03* 1146 <1 <.5 <.5 E1.4 E.13 E.06 <1 04/07/04 1140 <1 <.5 <.5 3.1 <1 <.5 <1 

8	 08/29/01 1315 <1 <.5 <.5 E1.2 <1 .18 <1 

03/14/02 1215 <1 <.5 <.5 4.2 <1 .01 <1 
Table 4.	 Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number Sample Sample Carbaryl Carbazole Chlorpyrifos Cholesterol Cotinine Diazinon Dichlorvos 

(fig. 1) date time 63-25-2 86-74-8 2921-88-2 57-88-5 486-56-6 333-41-5 62-73-7 

9	 06/13/01 1015 <1 <0.5 <0.5 E1.1 0.11 E0.07 <1 

10/30/01 0945 <1 <.5 <.5 <2 <1 <.5 <1 12/07/01 1000 <1 E.18 <.5 E.55 <1 <.5 <1 12/07/01* 1001 <1 E.30 <.5 E1.4 <1 <.5 <1 03/18/02 1245 <1 <.5 <.5 <2 <1 E.01 <1 06/20/02 1130 <1 <.5 <.5 E1.0 <1 E.04 <1 08/01/02 1020 <1 <.5 <.5 E.77 .16 E.06 <1 11/06/02 1000 <1 E.10 <.5 E.71 <1 <.5 <1 11/06/02a 1000 <1 M <.5 M M <.5 <1 

02/13/03 1000 <1 <.5 <.5 <2 E.22 <.5 <1 02/13/03* 1001 E.31 E.11 <.5 E1.6 E.72 <.5 <1 07/09/03 0930 <1 <.5 <.5 E1.1 <1 E.08 <1 04/13/04 1145 <1 <.5 <.5 <2 <1 <.5 <1 

10	 06/13/01 1000 <1 <.5 <.5 E1.8 .08 E.05 <1 11	 06/13/01 1230 <1 <.5 <.5 E2.0 .10 E.06 <1 

10/30/01 1145 <1 <.5 <.5 2.8 <1 <.5 <1 12/07/01 1145 <1 <.5 <.5 <2 <1 <.5 <1 03/18/02 1500 <1 E.06 <.5 <2 .10 E.04 <1 06/20/02 1315 <1 <.5 <.5 E1.5 .14 E.07 <1 08/01/02 1220 <1 E.11 <.5 E1.4 .18 E.16 <1 11/06/02 1145 <1 <.5 <.5 E.95 <1 E.01 <1 11/06/02a 1145 <1 M <.5 M M M <1 02/13/03 1230 E.11 E.10 <.5 2.0 E.74 <.5 <1 07/09/03 1130 <1 <.5 <.5 E1.6 E.13 E.07 <1 04/13/04 1330 <1 <.5 <.5 <2 <1 <.5 <1 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Carbaryl 

63-25-2 

Carbazole 

86-74-8 

Chlorpyrifos 

2921-88-2 

Cholesterol 

57-88-5 

Cotinine 

486-56-6

Diazinon 

333-41-5 

Dichlorvos 

62-73-7 

12 06/13/01 

06/13/01**

1430 

1431 

<1 

<1 

<0.5 

<.5 

<0.5 

<.5 

E2.0 

<2 

0.14 

<1 

E0.06 

<.5 

<1 

<1 

13 07/08/03 

04/08/04 

0930 

1300 

<1 

<1

E.02 

<.5 

<.5 

<.5 

E.74 

2.1 

<1 

<1 

E.05 

<.5 

<1 

<1 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02*11/07/02 11/07/02a 

02/12/03 

1400 

1345 

1430 1500 

1400 

1120 

1121 

1015 

1015 

1230 

<1 

<1 

<1

<1 

<1 

<1 

<1 

<1 

<1 

E.22

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

 E.12

<.5 

<.5

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E1.1 

E1.8 

2.9 

<2 

E.66 

<2 

<2 

E.84 

E1.0 

E9.5 

<1 

<1 

<1 

.08 

.11 

<1 

<1 

<1 

M 

E.59 

E.19 

E.11 

<.5 

E.01 

E.04 

E.08 

E.08 

<.5 

M 

<.5 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 <1
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

I

Site Galaxolide 

number Sample Sample Equilenin Estrone Fluoranthene (HHCB) Indole Isoborneol Isophorone 

(fig. 1) date time 517-09-9 53-16-7 206-44-0 1222-05-5 120-72-9 124-76-5 78-59-1 

1	 03/13/02 1315 <5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 2	 08/29/01 1130 <5 <5 E.06 <.5 <.5 <.5 <.5 

10/31/01 1000 <5 <5 <.5 <.5 <.5 <.5 <.5 12/11/01 1045 <5 <5 <.5 <.5 <.5 <.5 <.5 03/13/02 1530 <5 <5 E.06 <.5 <.5 <.5 <.5 06/18/02 1300 <5 <5 <.5 <.5 <.5 <.5 <.5 08/07/02 1245 <5 <5 <.5 <.5 <.5 <.5 <.5 11/05/02 1045 E.01 E.06 <.5 E.06 E.02 <.5 <.5 11/05/02a 1045 -- -- <.5 M M <.5 <.5 

02/11/03 1000 <5 <5 <.5 E.11 <.5 <.5 <.5 07/07/03 1130 <5 <5 E.02 E.03 <.5 <.5 <.5 04/08/04 1000 <5 <5 <.5 <.5 <.5 <.5 <.5 

3	 08/22/01 0945 <5 <5 <.5 E.07 <.5 <.5 <.5 

11/01/01 1300 <5 <5 <.5 <.5 <.5 <.5 <.5 12/20/01 1015 <5 <5 <.5 <.5 <.5 <.5 <.5 03/21/02 1245 <5 <5 <.5 <.5 <.5 <.5 <.5 06/19/02 1030 <5 <5 <.5 <.5 <.5 <.5 <.5 

4	 08/22/01 1100 <5 <5 <.5 E.07 E.02 <.5 <.5 

08/22/01* 1101 <5 <5 <.5 E.07 E.02 <.5 <.5 11/01/01 1145 <5 <5 <.5 E.35 <.5 <.5 <.5 12/20/01 1215 <5 <5 <.5 E.07 <.5 <.5 <.5 03/21/02 1445 E.06 <5 <.5 E.18 <.5 <.5 <.5 06/19/02 1130 <5 E.28 <.5 E.21 <.5 <.5 <.5 

5	 03/22/02 1200 <5 <5 E.10 <.5 <.5 <.5 <.5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

I

Site Galaxolide 

number Sample Sample Equilenin Estrone Fluoranthene (HHCB) Indole Isoborneol Isophorone 

(fig. 1) date time 517-09-9 53-16-7 206-44-0 1222-05-5 120-72-9 124-76-5 78-59-1 

6	 08/22/01 1315 <5 <5 <0.5 E0.06 <0.5 <0.5 <0.5 

08/22/01* 1316 <5 <5 E.09 E.10 <.5 <.5 <.5 11/01/01 0930 <5 <5 <.5 E.12 <.5 <.5 <.5 11/01/01* 0931 <5 E1.5 <.5 E.20 <.5 <.5 <.5 12/20/01 1415 <5 E2.4 <.5 E.11 <.5 <.5 <.5 03/22/02 1415 E.06 <5 E.07 <.5 <.5 <.5 <.5 06/19/02 1300 <5 <5 <.5 <.5 <.5 <.5 <.5 08/06/02 1400 E.02 E.09 <.5 E.10 <.5 <.5 <.5 11/07/02 1230 <5 <5 <.5 E.09 <.5 <.5 <.5 11/07/02a 1230 -- -- <.5 M <.5 <.5 <.5 

02/12/03 0945 <5 <5 E.05 .15 <.5 <.5 <.5 

07/07/03 0945 <5 E.13 E.03 E.09 <.5 <.5 <.5 

04/13/04 0945 <5 <5 E.04 E.09 <.5 <.5 <.5 

7	 08/29/01 0945 <5 <5 <.5 <.5 <.5 <.5 <.5 

10/31/01 1145 <5 <5 <.5 E.05 <.5 <.5 <.5 12/10/01 1300 <5 E2.3 <.5 E.04 <.5 <.5 <.5 03/14/02 0945 <5 <5 E.12 <.5 <.5 <.5 <.5 06/18/02 1500 <5 <5 <.5 <.5 <.5 <.5 <.5 06/18/02* 1501 E.082 E.26 <.5 <.5 <.5 <.5 <.5 08/07/02 1030 <5 <5 <.5 -- <.5 <.5 <.5 11/05/02 1245 E.013 E.07 E.12 E.10 <.5 <.5 <.5 11/05/02a 1245 -- -- <.5 M E.10 <.5 <.5 02/11/03 1145 <5 <5 E.04 E.12 <.5 <.5 <.5 07/08/03 1145 <5 <5 E.04 E.04 <.5 <.5 E.04 07/08/03* 1146 <5 <5 E.05 E.04 <.5 <.5 <.5 04/07/04 1140 <5 <5 <.5 <.5 <.5 <.5 <.5 

8	 08/29/01 1315 <5 <5 <.5 <.5 <.5 <.5 <.5 

03/14/02 1215 <5 <5 E.27 <.5 <.5 <.5 <.5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

I

Site Galaxolide 

number Sample Sample Equilenin Estrone Fluoranthene (HHCB) Indole Isoborneol Isophorone 

(fig. 1) date time 517-09-9 53-16-7 206-44-0 1222-05-5 120-72-9 124-76-5 78-59-1 

9	 06/13/01 1015 <5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 

10/30/01 0945 <5 <5 <.5 <.5 <.5 <.5 <.5 12/07/01 1000 <5 <5 E.07 <.5 <.5 <.5 <.5 12/07/01* 1001 <5 <5 E.16 <.5 <.5 <.5 <.5 03/18/02 1245 <5 <5 E.08 <.5 <.5 <.5 <.5 06/20/02 1130 <5 <5 E.05 <.5 <.5 <.5 <.5 08/01/02 1020 <5 <5 E.07 <.5 <.5 <.5 <.5 11/06/02 1000 <5 <5 E.37 <.5 E.03 <.5 <.5 11/06/02a 1000 -- -- M <.5 E.1 <.5 <.5 

02/13/03 1000 <5 <5 E.07 <.5 <.5 <.5 <.5 02/13/03* 1001 <5 E.39 E.14 E.10 <.5 <.5 <.5 07/09/03 0930 <5 <5 E.12 <.5 <.5 <.5 <.5 04/13/04 1145 <5 <5 E.18 <.5 <.5 <.5 <.5 

10 06/13/01 1000 <5 <5 <.5 <.5 <.5 <.5 <.5 11 06/13/01 1230 <5 <5 <.5 <.5 <.5 <.5 <.5 

10/30/01 1145 <5 <5 <.5 <.5 <.5 <.5 <.5 12/07/01 1145 <5 <5 <.5 E.07 <.5 <.5 <.5 03/18/02 1500 <5 <5 E.16 <.5 <.5 <.5 <.5 06/20/02 1315 <5 <5 <.5 <.5 <.5 <.5 <.5 08/01/02 1220 <5 <5 .07 <.5 <.5 <.5 <.5 11/06/02 1145 <5 <5 E.11 <.5 <.5 <.5 <.5 11/06/02a 1145 -- -- M <.5 <.5 <.5 <.5 02/13/03 1230 <5 <5 E.14 E.04 <.5 <.5 <.5 07/09/03 1130 <5 <5 E.03 <.5 <.5 <.5 <.5 04/13/04 1330 <5 <5 E.06 <.5 <.5 <.5 E.04 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Equilenin 

517-09-9 

Estrone 

53-16-7 

Fluoranthene 

206-44-0 

Galaxolide 

(HHCB) 

1222-05-5

Indole 

120-72-9 

Isoborneol 

124-76-5 

Isophorone 

78-59-1 

I

12 06/13/01 

06/13/01** 

1430 

1431 

<5 

<5 

<5 

<5 

<0.5 

<.5 

<0.5 

<.5 

<0.5 

<.5 

<0.5 

<.5 

<0.5 

<.5 

13 07/08/03 

04/08/04 

0930 

1300 

<5 

<5 

<5 

<5 

E.13 

E.04 

E.03 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5

<.5 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02* 11/07/0211/07/02a

02/12/03 

1400 

1345 

1430 

1500 

1400 1120 

1121 

1015 

1015

1230

<5 

<5 

<5

<5 

<5 <5 

<5 

<5 

<5 

--

<5 

<5 

<5 

<5 

<5 <5 

<5 

<5 

E.37 

--

E.07 

<.5 

<.5

<.5 

<.5 <.5 

<.5 

<.5

<.5 

E.10

<.5

<.5 

 E.05 

<.5 

<.5 <.5 

<.5 

 E.04 

<.5 

 E.18 

<.5 

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.09 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

N,NdiethylSite Methyl- toluamide

number Sample Sample Menthol Metalaxyl salicylate Metolachlor (DEET) Naphthalene NP1EO 

(fig. 1) date time 89-78-1 57837-19-1 119-36-8 51218-45-2 134-62-3 91-20-3 27986-36-3 2

1	 03/13/02 1315 <0.5 <0.5 <0.5 E0.01 <0.5 <0.5 <5 2	 08/29/01 1130 <.5 <.5 <.5 E.01 <.5 <.5 -- 

10/31/01 1000 <.5 <.5 <.5 <.5 <.5 <.5 -- 12/11/01 1045 <.5 <.5 <.5 E.02 <.5 <.5 -- 03/13/02 1530 <.5 <.5 <.5 E.01 <.5 <.5 <5 06/18/02 1300 <.5 <.5 <.5 E.36 E.24 <.5 <5 08/07/02 1245 <.5 <.5 <.5 E.01 E.06 <.5 <5 11/05/02 1045 <.5 <.5 E.05 <.5 <.5 <.5 <5 11/05/02a 1045 <.5 <.5 E.10 <.5 E.10 <.5 -- 

02/11/03 1000 <.5 <.5 <.5 <.5 E.15 <.5 <5 07/07/03 1130 <.5 E.08 <.5 E.04 E.23 <.5 <2 04/08/04 1000 <.5 <.5 <.5 <.5 <.5 <.5 <2 

3	 08/22/01 0945 <.5 <.5 <.5 E.04 E.27 <.5 -- 

11/01/01 1300 <.5 <.5 <.5 E.02 <.5 <.5 -- 12/20/01 1015 <.5 <.5 <.5 <.5 <.5 <.5 -- 03/21/02 1245 <.5 <.5 <.5 E.01 <.5 <.5 <5 06/19/02 1030 <.5 <.5 <.5 E.03 E.09 <.5 <5 

4	 08/22/01 1100 <.5 <.5 E.10 E.27 E.30 <.5 -- 

08/22/01* 1101 <.5 <.5 E.10 E.27 E.20 <.5 -- 11/01/01 1145 <.5 <.5 <.5 E.11 <.5 <.5 -- 12/20/01 1215 <.5 <.5 <.5 E.03 <.5 <.5 -- 03/21/02 1445 <.5 <.5 <.5 E.03 E.10 <.5 E.80 06/19/02 1130 <.5 <.5 E.04 E.20 E.43 <.5 E.97 

5	 03/22/02 1200 <.5 <.5 <.5 <.5 <.5 <.5 <5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

N,NdiethylSite Methyl- toluamide 

number Sample Sample Menthol Metalaxyl salicylate Metolachlor (DEET) Naphthalene NP1EO 

(fig. 1) date time 89-78-1 57837-19-1 119-36-8 51218-45-2 134-62-3 91-20-3 27986-36-3 2

6	 08/22/01 1315 <0.5 <0.5 E0.10 E0.20 E0.57 <0.5 -- 

08/22/01* 1316 <.5 <.5 <.5 E.14 E.32 <.5 -- 11/01/01 0930 E.22 <.5 <.5 E.04 E.13 <.5 -- 11/01/01* 0931 <.5 <.5 <.5 E.03 E.18 <.5 -- 12/20/01 1415 E.28 <.5 <.5 E.04 E.10 <.5 -- 03/22/02 1415 <.5 <.5 <.5 E.02 E.08 <.5 E0.40 06/19/02 1300 <.5 <.5 <.5 E.11 E.30 <.5 <5 08/06/02 1400 E.30 <.5 <.5 E.06 .92 <.5 E2.0 11/07/02 1230 E.18 <.5 <.5 E.04 E.10 <.5 E1.6 11/07/02a 1230 E.20 <.5 <.5 M E.10 <.5 -- 

02/12/03 0945 E.32 <.5 <.5 E.10 E.15 <.5 E2.6 07/07/03 0945 <.5 <.5 <.5 E.06 1.7 <.5 E.93 04/13/04 0945 E.22 <.5 <.5 <.5 E.29 <.5 E1.2 

7	 08/29/01 0945 <.5 <.5 <.5 E.04 E.19 <.5 -- 

10/31/01 1145 <.5 <.5 <.5 E.02 E.10 <.5 -- 12/10/01 1300 <.5 <.5 <.5 E.05 E.16 <.5 -- 03/14/02 0945 <.5 <.5 <.5 E.01 <.5 <.5 <5 06/18/02 1500 <.5 <.5 <.5 E.21 E.20 <.5 <5 06/18/02* 1501 <.5 <.5 <.5 E.24 E.19 <.5 <5 08/07/02 1030 <.5 <.5 <.5 E.04 .57 <.5 E1.0 11/05/02 1245 <.5 <.5 E.03 E.06 E.15 <.5 E1.3 11/05/02a 1245 E.20 <.5 E.10 M E.10 <.5 -- 02/11/03 1145 E.22 <.5 <.5 E.10 E.18 <.5 E2.4 07/08/03 1145 <.5 <.5 <.5 E.04 E.70 <.5 <2 07/08/03* 1146 <.5 <.5 E.02 E.04 E.90 <.5 <2 04/07/04 1140 <.5 <.5 <.5 <.5 E.10 <.5 E.65 

8	 08/29/01 1315 <.5 <.5 <.5 E.03 <.5 <.5 -- 

03/14/02 1215 <.5 <.5 <.5 E.01 E.12 <.5 <5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

N,NdiethylSite Methyl- toluamide 

number Sample Sample Menthol Metalaxyl salicylate Metolachlor (DEET) Naphthalene NP1EO 

(fig. 1) date time 89-78-1 57837-19-1 119-36-8 51218-45-2 134-62-3 91-20-3 27986-36-3 2

9	 06/13/01 1015 <0.5 <0.5 <0.5 E0.04 E0.32 <0.5 -- 

10/30/01 0945 <.5 <.5 <.5 <.5 E.07 <.5 -- 12/07/01 1000 <.5 <.5 <.5 <.5 E.06 E.45 -- 12/07/01* 1001 <.5 <.5 <.5 <.5 E.09 .84 -- 03/18/02 1245 <.5 <.5 <.5 <.5 <.5 <.5 <5 06/20/02 1130 <.5 <.5 E.04 E.06 E.10 <.5 <5 08/01/02 1020 <.5 <.5 <.5 E.02 E.27 <.5 <5 11/06/02 1000 E.16 <.5 E.14 E.01 E.11 E.06 E.35 11/06/02a 1000 <.5 <.5 E.20 <.5 E.10 E.10 -- 

02/13/03 1000 <.5 <.5 <.5 E.07 E.07 <.5 <5 02/13/03* 1001 <.5 E.24 <.5 E.15 E.17 <.5 E.98 07/09/03 0930 <.5 <.5 <.5 E.03 E.22 <.5 <2 04/13/04 1145 <.5 <.5 <.5 <.5 <.5 <.5 <2 

10 06/13/01 1000 <.5 <.5 <.5 E.06 E.37 <.5 -- 11 06/13/01 1230 <.5 <.5 <.5 E.05 E.37 <.5 -- 

10/30/01 1145 <.5 <.5 <.5 <.5 E.07 <.5 -- 12/07/01 1145 E.19 <.5 <.5 <.5 <.5 <.5 -- 03/18/02 1500 <.5 <.5 <.5 <.5 <.5 <.5 <5 06/20/02 1315 <.5 <.5 <.5 E.02 E.12 <.5 <5 08/01/02 1220 <.5 <.5 <.5 E.04 E.36 <.5 <5 11/06/02 1145 <.5 <.5 <.5 <.5 E.07 <.5 <5 11/06/02a 1145 E.10 <.5 <.5 M E.10 <.5 -- 02/13/03 1230 E.19 <.5 <.5 E.06 E.13 <.5 <5 07/09/03 1130 <.5 <.5 E.02 <.5 E.29 <.5 <2 04/13/04 1330 <.5 <.5 <.5 <.5 <.5 <.5 <2 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Menthol 

89-78-1 

Metalaxyl 

57837-19-1 

Methylsalicylate 

119-36-8 

Metolachlor 

51218-45-2 

N,Ndiethyltoluamide 

(DEET) 

134-62-3 

Naphthalene 

91-20-3 

NP1EO 

27986-36-3 

2

12 06/13/01 

06/13/01** 

1430 

1431 

<0.5 

<.5 

<0.5 

<.5 

<0.5 

<.5 

E0.04

<.5 

E0.26 

<.5 

<0.5 

<.5 

--

--

13 07/08/03 

04/08/04 

0930

1300 

<.5

<.5 

<.5 

<.5 

<.5 

<.5 

E.03 

<.5

E.36 

E.10 

<.5 

<.5 

<2 

E.49 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02*11/07/02 11/07/02a 

02/12/03 

1400 

1345 

1430 

1500 

1400 

1120 

1121

1015 

1015 

1230 

<.5 

<.5 

<.5 

E.29 

<.5 

<.5 

<.5 

<.5 

E.10 

E.21 

<.5 

<.5 

<.5 

<.5 

<.5 

E.05 

E.05 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.02 

E.03 

E.03 

E.01 

E.20 

E.03 

E.04 

E.02 

M 

E.17 

E.15 

E.11 

E.10 

E.09 

E.25 

E.26 

E.24 

<.5 

E.10 

E.20

E.21 

1.2 

E.07 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.06

--

--

--

<5 

<5 

E.38 

E.48 

E.33 

E2.3 

--
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

PentaSite Para- chloronumber Sample Sample OP2EO cresol phenol Phenanthrene Phenol Prometon Pyrene S

(fig. 1) date time 2315-61-9 106-44-5 87-86-5 85-01-8 108-95-2 1610-18-0 129-00-0 

1	 03/13/02 1315 <1 <1 <2 <0.5 <0.5 <0.5 <0.5 2	 08/29/01 1130 <1 <1 <2 <.5 <.5 .02 E.05 

10/31/01 1000 <1 <1 <2 <.5 E.32 <.5 <.5 12/11/01 1045 <1 <1 <2 <.5 <.5 <.5 <.5 03/13/02 1530 <1 E.33 <2 <.5 <.5 <.5 <.5 06/18/02 1300 <1 <1 .04 <.5 E.24 .01 <.5 08/07/02 1245 <1 <1 <2 <.5 <.5 <.5 <.5 11/05/02 1045 <1 <1 <2 <.5 <.5 <.5 <.5 11/05/02a 1045 <1 <1 <2 <.5 E.40 <.5 <.5 

02/11/03 1000 <1 <1 <2 <.5 E.24 <.5 <.5 07/07/03 1130 <1 <1 <2 E.01 <.5 E.05 E.01 04/08/04 1000 <1 <1 <2 <.5 <.5 <.5 <.5 

3	 08/22/01 0945 <1 <1 <2 <.5 <.5 7.8 <.5 

11/01/01 1300 <1 <1 <2 <.5 <.5 .03 <.5 12/20/01 1015 <1 <1 <2 <.5 <.5 <.5 <.5 03/21/02 1245 <1 <1 <2 <.5 E.21 E.02 <.5 06/19/02 1030 <1 <1 <2 <.5 E.45 .04 <.5 

4	 08/22/01 1100 <1 <1 <2 <.5 <.5 1.4 <.5 

08/22/01* 1101 <1 <1 <2 <.5 <.5 1.4 <.5 11/01/01 1145 <1 <1 <2 <.5 E.81 <.5 <.5 12/20/01 1215 <1 <1 <2 <.5 <.5 <.5 <.5 03/21/02 1445 <1 <1 <2 <.5 E.21 <.5 <.5 06/19/02 1130 <1 <1 E.07 <.5 E.33 .02 <.5 

5	 03/22/02 1200 <1 <1 <2 <.5 <.5 E.01 <.5 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

PentaSite Para- chloronumber Sample Sample OP2EO cresol phenol Phenanthrene Phenol Prometon Pyrene S

(fig. 1) date time 2315-61-9 106-44-5 87-86-5 85-01-8 108-95-2 1610-18-0 129-00-0 

6	 08/22/01 1315 <1 <1 <2 <0.5 <0.5 1.1 <0.5 

08/22/01* 1316 E1.8 <1 <2 <.5 <.5 .78 E.10 11/01/01 0930 E1.5 <1 <2 <.5 E.22 <.5 <.5 11/01/01* 0931 E1.8 <1 <2 <.5 <.5 <.5 <.5 12/20/01 1415 <1 <1 <2 <.5 <.5 <.5 <.5 03/22/02 1415 <1 <1 <2 <.5 <.5 <.5 <.5 06/19/02 1300 <1 <1 <2 <.5 E.26 .02 <.5 08/06/02 1400 <1 <1 E.02 <.5 E.23 E.03 <.5 11/07/02 1230 <1 <1 <2 <.5 <.5 <.5 <.5 11/07/02a 1230 M <1 <2 <.5 <.5 <.5 <.5 

02/12/03 0945 E.22 E.14 <2 <.5 <.5 <.5 E.04 07/07/03 0945 E.12 <1 <2 E.02 <.5 <.5 E.02 04/13/04 0945 E.09 <1 <2 E.03 <.5 <.5 E.04 

7	 08/29/01 0945 <1 <1 E.03 <.5 E.24 E.02 <.5 

10/31/01 1145 <1 <1 <2 <.5 <.5 <.5 <.5 12/10/01 1300 <1 <1 <2 <.5 <.5 <.5 <.5 03/14/02 0945 <1 <1 <2 E.06 E.65 <.5 E.07 06/18/02 1500 <1 <1 <2 <.5 E.32 <.5 <.5 06/18/02* 1501 <1 <1 E.03 <.5 E.42 E.02 <.5 08/07/02 1030 E.12 <1 <2 <.5 E1.0 E.03 <.5 11/05/02 1245 <1 <1 E.04 E.06 E1.1 <.5 E.08 11/05/02a 1245 <1 M M <.5 .70 <.5 <.5 02/11/03 1145 E.18 <1 <2 <.5 E.29 <.5 E.03 07/08/03 1145 <1 <1 <2 E.02 <.5 <.5 E.03 07/08/03* 1146 <1 <1 <2 E.02 E.30 <.5 E.03 04/07/04 1140 E.04 <1 <2 <.5 <.5 <.5 <.5 

8	 08/29/01 1315 <1 <1 <2 <.5 E.30 E.03 <.5 

03/14/02 1215 <1 <1 <2 .11 E1.6 <.5 E.16 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

PentaSite Para- chloronumber Sample Sample OP2EO cresol phenol Phenanthrene Phenol Prometon Pyrene S

(fig. 1) date time 2315-61-9 106-44-5 87-86-5 85-01-8 108-95-2 1610-18-0 129-00-0 

9	 06/13/01 1015 <1 <1 <2 <0.5 <0.5 0.02 <0.5 

10/30/01 0945 <1 <1 <2 <.5 <.5 <.5 <.5 12/07/01 1000 <1 <1 <2 E.18 <.5 <.5 E.05 12/07/01* 1001 <1 <1 .15 E.30 <.5 <.5 E.11 03/18/02 1245 <1 <1 <2 <.5 <.5 E.01 <.5 06/20/02 1130 <1 <1 <2 <.5 <.5 .67 <.5 08/01/02 1020 E.11 <1 .04 <.5 <.5 .14 <.5 11/06/02 1000 <1 <1 .04 E.24 <.5 E.02 E.22 11/06/02a 1000 M M M <.5 E.20 <.5 M 

02/13/03 1000 <1 <1 <2 <.5 <.5 <.5 3.0 02/13/03* 1001 E.13 E.08 E.66 E.07 <.5 E.14 E.08 07/09/03 0930 <1 <1 <2 <.5 E.20 E.10 E.08 04/13/04 1145 <1 <1 <2 <.5 E.18 <.5 E.02 

10 06/13/01 1000 <1 <1 <2 <.5 <.5 <.5 <.5 11 06/13/01 1230 <1 <1 <2 <.5 <.5 <.5 <.5 

10/30/01 1145 <1 <1 .03 <.5 <.5 .03 <.5 12/07/01 1145 <1 <1 <2 <.5 <.5 <.5 <.5 03/18/02 1500 <1 <1 .17 <.5 E1.3 <.5 E.07 06/20/02 1315 <1 <1 <2 <.5 <.5 1.1 <.5 08/01/02 1220 <1 <1 .09 .05 E.38 .27 <.5 11/06/02 1145 <1 <1 .02 <.5 <.5 .02 E.06 11/06/02a 1145 M <1 M <.5 E.19 <.5 M 02/13/03 1230 E.07 <1 E.62 E.12 <.5 E.07 E.07 07/09/03 1130 <1 <1 <2 <.5 <.5 <.5 E.01 04/13/04 1330 <1 <1 <2 E.03 E.10 <.5 E.02 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

OP2EO 

2315-61-9 

Paracresol 

106-44-5 

Pentachlorophenol 

87-86-5 

Phenanthrene 

85-01-8 

Phenol 

108-95-2 

Prometon 

1610-18-0 

Pyrene 

129-00-0 

S

12 06/13/01

06/13/01** 

1430 

1431 

E0.74 

<1 

<1 

<1 

0.28 

<2 

<0.5 

<.5 

<0.5 

<.41 

<0.5

<.5 

<0.5 

<.5 

13 07/08/03 

04/08/04 

0930 

1300 

<1 

E.05 

<1 

<1 

<2 

<2 

E.11 

E.04 

<.5 

<.5 

E.06 

<.5 

E.08 

E.09 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02* 11/07/02 11/07/02a 

02/12/03 

1400 

1345 1430 

1500 

1400 

1120 

1121 

1015 

1015 

1230 

<1 

<1 <1 

<1 

<1 

<1 

<1 

<1 

<1 

E.21 

<1 

<1 <1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<2 

<2 <2 

.13 

<2 

E.02 

E.02 

<2 

M 

E.67 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.08 

E.31

E.26 E.31 

E.96 

E.33

<.5

<.5

<.5 

<.5 

E.61 

 .04 

<.5 <.5 

<.5 

 .06 

 E.06 

 E.06 

<.5 

<.5 

E.10 

E.06 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.10 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site Tetrachloro- Tribromo- Tributyl Triethyl Triphenyl Tris (2-butoxyethyl)- Tris (2

number Sample Sample ethylene methane phosphate Triclosan citrate phosphate phosphate p

(fig. 1) date time 127-18-4 75-25-2 126-73-8 3380-34-5 77-93-0 115-86-6 78-51-3 

1 03/13/02 1315 <0.5 <0.5 <0.5 <1 <0.5 <0.5 <0.5 2 08/29/01 1130 <.5 <.5 <.5 <1 .10 E.06 <.5 

10/31/01 1000 <.5 <.5 .08 <1 <.5 <.5 <.5 12/11/01 1045 <.5 <.5 .07 <1 <.5 <.5 <.5 03/13/02 1530 <.5 <.5 <.5 <1 <.5 <.5 1.9 06/18/02 1300 <.5 <.5 <.5 <1 <.5 <.5 E.24 08/07/02 1245 <.5 <.5 .14 <1 <.5 <.5 <.5 11/05/02 1045 <.5 <.5 <.5 <1 <.5 <.5 <.5 11/05/02a 1045 <.5 <.5 E.10 <1 M <.5 E.20 

02/11/03 1000 <.5 <.5 .10 <1 .17 E.07 <.5 07/07/03 1130 <.5 <.5 E.04 <1 E.02 <.5 E.21 04/08/04 1000 <.5 <.5 <.5 <1 <.5 <.5 <.5 

3 08/22/01 0945 <.5 <.5 .65 E.13 <.5 E.27 1.1 

11/01/01 1300 <.5 <.5 <.5 <1 <.5 <.5 E.12 12/20/01 1015 <.5 <.5 <.5 <1 <.5 <.5 <.5 03/21/02 1245 <.5 <.5 <.5 <1 <.5 <.5 E.19 06/19/02 1030 <.5 <.5 <.5 <1 <.5 <.5 E.33 

4 08/22/01 1100 <.5 <.5 .69 E.21 .63 <.5 <.5 

08/22/01* 1101 <.5 <.5 .70 E.23 .63 <.5 <.5 11/01/01 1145 <.5 <.5 .18 E.12 .20 E.06 <.5 12/20/01 1215 <.5 <.5 .07 E.12 <.5 <.5 <.5 03/21/02 1445 E.09 <.5 E.08 <1 E.12 <.5 E.16 06/19/02 1130 <.5 <.5 <.5 E.17 .19 E.07 E.29 

5 03/22/02 1200 <.5 <.5 <.5 <1 <.5 <.5 E.15 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site Tetrachloro- Tribromo- Tributyl Triethyl Triphenyl Tris (2-butoxyethyl)- Tris (2

number Sample Sample ethylene methane phosphate Triclosan citrate phosphate phosphate p

(fig. 1) date time 127-18-4 75-25-2 126-73-8 3380-34-5 77-93-0 115-86-6 78-51-3 

6 08/22/01 1315 <0.5 <0.5 0.68 E0.70 0.53 <0.5 1.5 

08/22/01* 1316 <.5 <.5 .67 E.53 .52 E.29 1.3 11/01/01 0930 <.5 <.5 .06 E.64 .12 <.5 .72 11/01/01* 0931 <.5 <.5 .10 E.88 .18 <.5 1.2 12/20/01 1415 E.20 <.5 .08 E.90 .08 E.07 .70 03/22/02 1415 E.06 <.5 E.09 <1 E.06 <.5 E.30 06/19/02 1300 <.5 <.5 <.5 E.09 <.5 <.5 E.22 08/06/02 1400 <.5 <.5 E.14 E.44 E.09 <.5 3.5 11/07/02 1230 E.05 <.5 .06 E.33 .07 <.5 E2.2 11/07/02a 1230 <.5 <.5 E.10 M E.10 M 3.2 

02/12/03 0945 <.5 <.5 E.19 E.58 E.30 E.11 5.8 07/07/03 0945 <.5 <.5 E.26 E.50 E.11 E.03 1.0 04/13/04 0945 <.5 <.5 E.10 E.61 E.16 E.03 E2.1 

7 08/29/01 0945 <.5 <.5 <.5 E.14 <.5 <.5 E.23 

10/31/01 1145 <.5 <.5 .08 E.21 .06 <.5 E.29 12/10/01 1300 <.5 <.5 .20 E.38 .15 <.5 1.5 03/14/02 0945 <.5 <.5 <.5 E.19 .06 <.5 1.9 06/18/02 1500 <.5 <.5 <.5 <1 <.5 <.5 E.32 06/18/02* 1501 <.5 <.5 <.5 <1 <.5 <.5 E.24 08/07/02 1030 <.5 <.5 .20 E.36 .08 E.08 2.4 11/05/02 1245 <.5 <.5 .12 E.27 .10 <.5 3.5 11/05/02a 1245 <.5 <.5 E.10 M E.10 M 3.1 02/11/03 1145 <.5 <.5 E.16 E.45 .25 E.11 E3.3 07/08/03 1145 <.5 <.5 E.12 E.19 E.03 E.18 .64 07/08/03* 1146 <.5 <.5 E.17 E.22 <.5 E.19 .82 04/07/04 1140 <.5 <.5 E.07 E.18 <.5 <.5 E1.0 

8 08/29/01 1315 <.5 <.5 <.5 E.10 .11 E.06 E.24 

03/14/02 1215 <.5 <.5 <.5 E.19 <.5 <.5 1.8 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site Tetrachloro- Tribromo- Tributyl Triethyl Triphenyl Tris (2-butoxyethyl)- Tris (2

number Sample Sample ethylene methane phosphate Triclosan citrate phosphate phosphate p

(fig. 1) date time 127-18-4 75-25-2 126-73-8 3380-34-5 77-93-0 115-86-6 78-51-3 

9 06/13/01 1015 <0.5 <0.5 <0.5 <1 <0.5 <0.5 E0.27 

10/30/01 0945 <.5 <.5 <.5 <1 <.5 <.5 <.5 12/07/01 1000 <.5 <.5 <.5 <1 <.5 <.5 E.11 12/07/01* 1001 <.5 <.5 .09 <1 <.5 E.07 E.22 03/18/02 1245 <.5 <.5 <.5 <1 <.5 <.5 <.5 06/20/02 1130 <.5 <.5 <.5 <1 <.5 <.5 E.38 08/01/02 1020 <.5 <.5 .14 <1 <.5 E.07 E.41 11/06/02 1000 <.5 <.5 .10 <1 <.5 <.5 .74 11/06/02a 1000 <.5 <.5 <.5 <1 <.5 M E.90 

02/13/03 1000 <.5 <.5 E.09 <1 E.05 E.06 E4.3 02/13/03* 1001 <.5 <.5 E.18 E.10 E.16 E.14 E4.2 07/09/03 0930 <.5 <.5 <.5 <1 <.5 <.5 E.28 04/13/04 1145 <.5 <.5 <.5 <1 <.5 <.5 <.5 

10 06/13/01 1000 <.5 <.5 <.5 <1 <.5 <.5 E.38 11 06/13/01 1230 <.5 <.5 <.5 <1 <.5 <.5 E.49 

10/30/01 1145 <.5 <.5 .05 <1 <.5 <.5 E.22 12/07/01 1145 E.06 E.75 .10 <1 .06 <.5 E.30 03/18/02 1500 <.5 <.5 <.5 <1 <.5 <.5 .80 06/20/02 1315 <.5 <.5 <.5 <1 <.5 <.5 .50 08/01/02 1220 <.5 <.5 .14 E.18 <.5 E.07 .83 11/06/02 1145 <.5 <.5 <.5 <1 <.5 <.5 E.49 11/06/02a 1145 <.5 <.5 M <1 <.5 <.5 E.90 02/13/03 1230 <.5 <.5 E.11 E.06 E.11 E.07 E1.5 07/09/03 1130 <.5 <.5 E.04 <1 <.5 <.5 .56 04/13/04 1330 <.5 <.5 <.5 <1 <.5 <.5 E35 
Table 4. Concentrations of selected organic wastewater compounds in base-flow samples collected between June 2001 and April 2004.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimatedified, but not quantified; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Tetrachloroethylene 

127-18-4 

Tribromomethane 

75-25-2 

Tributyl 

phosphate 

126-73-8 

Triclosan 

3380-34-5 

Triethyl 

citrate 

77-93-0 

Triphenyl 

phosphate 

115-86-6 

Tris (2-butoxyethyl)­

phosphate 

78-51-3 

Tris (2

p

12 06/13/01 

06/13/01** 

1430 

1431 

<0.5 

<.5 

<0.5 

<.5 

<0.5 

<.5 

E0.20 

<1 

<0.5 

<.5 

<0.5 

<.5 

1.2 

<.5 

13 07/08/03 

04/08/04 

0930 

1300 

<.5 

<.5 

<.5 

<.5 

E.08 

E.07 

E.12 

E.11 

<.5 

<.5 

<.5 

<.5 

.50 

E.74 

14 08/29/01 

10/31/01 12/11/01 03/14/02 06/20/02 08/06/02 08/06/02* 11/07/02 11/07/02a 

02/12/03 

1400 

1345 

1430 

1500 1400 

1120 

1121 

1015

1015 

1230 

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 <.5 

<.5 

<.5

<.5 

<.5 

<.5 

<.5 

.16 

.12 

<.5 <.5 

E.10 

 E.09 

<.5 

E.10 

E.30 

E.11

E.21 

E.40 

E.09 

<1 

E.09 

E.10 

<1 

M 

E.35 

.10 

.05 

.10 

<.5 

<.5 

<.5 

<.5 

<.5 

E.10 

E.28 

E.06 

<.5 

E.05 

<.5 

<.5 

<.5 

<.5 

<.5 

M 

E.19 

E.30 

E.33 

.96 

1.8 

E.44 

1.3 

1.2 

E.59 

1.4 

E5.2 

aFiltered sample. 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples. 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

1,7-Dimethylxanthine 

611-59-6 

Acetaminophen 

103-90-2 

Amoxicillin 

61336-70-7 

Azithromycin 

83905-01-5 

Caffeine 

58-08-2 

Carbamazep

298-46-4 

1 03/13/02 1315 0.022 <0.009 -- MRL-ND 0.030 E0.004 2 10/11/00 

08/29/01 10/31/01 12/11/01 03/13/02 06/18/02 08/07/02 11/05/02 02/11/03 07/07/03 04/08/04 09/03/04 

1030 

1130 

1000 

1045 

1530 

13001245 

1045 

1000 

1130 

1000 

0945 

.031

<.018 

.573 

.041 

.037 

<.018 <.018 

.151 

<.018 

<.018 

.044 

<.018 

<.009 

<.009 

.566 

<.009 

.055 

<.009 <.009 

<.009 

<.009 

<.009 

<.009 

<.009 

--

--

--

--

--

----

--

--

MRL-ND 

MRL-ND 

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

E.013 

E.019

1.25

.034 

.052 

.014 .024 

.042 

<.014 

.036 

<.014 

<.014 

--

<.011

.025 

E.046

E.014 

E.011 E.119 

.039 

.052 

.037 

<.011 

.030 

3 10/12/00 

08/22/01 11/01/01 12/20/0103/21/02 06/19/02 

1045 

0945 1300 1015 1245 1030 

<.018 

<.018 <.018 <.018 <.018 <.018 

E.006 

<.009 <.009 <.009 <.009 

E.006 

--

----------

--

MRL-ND MRL-ND MRL-ND MRL-ND MRL-ND 

E.013 

.076 .015 .213 .114 .094 

--

<.011 <.011 <.011 <.011 <.011 

4 10/12/00 

10/12/00* 08/22/01 11/01/01 12/20/01 03/21/02 06/19/02 

1315

1316 

1100 1145 1215 1445 

1130 

<.018 

<.018 

<.018 <.018<.018 <.018 

<.018 

<.009 

<.009 

<.009 <.009 <.009 <.009 

<.009 

MRL-ND 

MRL-ND 

--------

--

--

--

MRL-ND MRL-ND MRL-ND MRL-ND 

MRL-ND 

<.014 

<.014 

<.014 <.014 <.014 <.014 

E.027 

--

--

.076 .043 

E.062 E.070 

E.049 

5 03/22/02 1200 .205 .077 -- MRL-ND .24 <.011 6 10/12/00 

08/22/01 11/01/01 12/20/01 

1500 

1315 

0930 

1415 

1.67 

.578 

.706 

E2.65 

1.22 

.453 

.745

.695

MRL-ND 

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

E3.04 

1.58 

1.82 

E3.07 

--

.165 

.027 

E.064 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number Sample Sample 1,7-Dimethylxanthine Acetaminophen Amoxicillin Azithromycin Caffeine Carbamazep

(fig. 1) date time 611-59-6 103-90-2 61336-70-7 83905-01-5 58-08-2 298-46-4 

6 03/22/02 1415 0.100 <0.009 -- MRL-ND 0.069 E0.045 

06/19/02 1300 <.018 E.005 -- MRL-ND .024 E.055 08/06/02 1400 .615 .566 -- MRL-ND .938 E.046 11/07/02 1230 1.12 .727 -- MRL-ND 1.41 E.039 02/12/03 0945 2.03 .536 -- MRL-ND 1.84 .068 07/07/03 0945 .640 .580 MRL-ND MRL-ND .840 .083 04/13/04 0945 1.90 1.00 MRL-ND MRL-ND 1.70 .082 09/03/04 1400 .460 .310 -- MRL-ND .580 .026 

7 10/11/00 1030 .617 <.009 MRL-ND -- 1.14 -- 

08/29/01 0945 .062 .046 -- MRL-ND .232 E.013 10/31/01 1145 .245 .317 -- MRL-ND .718 E.034 12/10/01 1300 .669 .146 -- MRL-ND .928 E.021 03/14/02 0945 .676 .192 -- MRL-ND .811 E.026 06/18/02 1500 <.018 .014 -- MRL-ND .040 E.028 06/18/02* 1501 <.018 .013 -- MRL-ND .028 E.021 08/07/02 1030 .456 .483 -- MRL-ND .612 E.075 11/05/02 1245 .705 .960 -- MRL-ND 1.00 .050 02/11/03 1145 1.52 .242 -- MRL-ND 1.25 .069 07/08/03 1145 .005 .140 -- MRL-ND .200 .074 07/08/03* 1146 .005 .140 -- MRL-ND .310 .073 04/07/04 1140 .550 .170 -- MRL-ND .480 .030 09/09/04 1100 .150 .077 -- -- .120 <.011 

8 10/11/00 1430 .393 .131 MRL-ND -- .564 -- 

08/29/01 1315 .068 .040 -- MRL-ND .207 <.011 03/14/02 1215 .704 .626 -- MRL-ND .744 E.019 

9 10/03/00 1015 .045 .044 MRL-ND -- .493 -- 

06/13/01 1015 .216 .034 -- MRL-ND .467 E.002 10/30/01 0945 <.018 E.002 -- MRL-ND E.007 E.010 12/07/01 1000 <.018 .022 -- MRL-ND .120 .008 12/07/01* 1001 <.018 .026 -- MRL-ND .120 <.011 03/18/02 1245 .060 .023 -- MRL-ND .145 <.011 06/20/02 1130 <.018 .014 -- MRL-ND .053 <.011 08/01/02 1020 <.018 .015 -- MRL-ND .113 <.011 11/06/02 1000 <.018 .137 -- MRL-ND .662 <.011 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

1,7-Dimethylxanthine 

611-59-6 

Acetaminophen 

103-90-2 

Amoxicillin 

61336-70-7 

Azithromycin 

83905-01-5 

Caffeine 

58-08-2 

Carbamazep

298-46-4 

9 02/13/03 

02/13/03*07/09/03 04/13/04 08/18/04 08/18/04*

1000 

1001 

0930 

1145 

1000 

1001 

<0.018 

<.018 

<.018 

.066

<.018 

<.018 

0.037 

.036 

<.009 

.065 

<.009 

.064 

--

--

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND

MRL-ND

MRL-ND 

MRL-ND 

0.158 

.161 

<.014

.069 

<.014 

<.014 

<0.011 

<.011

<.011 

<.011 

<.011 

<.011

10 10/03/00 

06/13/01 

1100 

1000 

<.018 

.992 

<.009 

.023 

MRL-ND 

--

--

MRL-ND 

<.014 

1.86 

--

<.011 

11 10/03/00 

06/13/01 10/30/0112/07/01 03/18/02 06/20/02 08/01/02 11/06/0202/13/03 07/09/03 04/13/04 08/19/04 

1245 

1230 

1145 

1145 1500 

1315 1220 1145 

1230 

1130 

1330 

1030 

E.018 

.934

.055

.146 .195 

<.018 <.018 <.018 

.374 

.063 

<.018 

<.018 

.021 

.019 

E.022 

.412 .274 

.022 .109 .112 

.533 

.031 

.023 

<.009 

MRL-ND

MRL-ND 

MRL-ND 

--

--

----

------

--

--

--

MRL-ND 

MRL-ND

MRL-ND MRL-ND 

MRL-ND MRL-ND MRL-ND 

MRL-ND 

MRL-ND

MRL-ND 

MRL-ND 

.145 

E2.25

.103 

1.05 1.16 

.183 .579 .503 

1.12 

.220 

.510 

.150 

--

<.011

E.002

<.011 <.011 

E.011 

<.011<.011 

<.011 

<.011 

<.011 

<.011 

12 10/03/00 

06/13/01 06/13/01** 

1230 

1430 

1431 

E.471 

1.59 

<.018 

<.009 

E.002 

<.009 

MRL-ND MRL-ND 

MRL-ND 

--

MRL-ND 

MRL-ND 

1.14 

E3.72 

<.014 

--

<.011 

<.011 

13 07/08/03 

04/08/0409/10/04 

0930 

1300 

1030 

.110 

.340 

.064 

.016 

.052 

<.009 

MRL-ND 

--

--

MRL-ND 

MRL-ND

MRL-ND 

<.014 

.340 

.130 

.047 

.021 

<.011 

14 10/11/00 

08/29/01 10/31/01 12/11/01 

1230 

1400 

1345 

1430 

.273 

.072 

E.014 

1.28 

.224 

.025 

E.011 

.595 

--

--

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

.501 

.180 

E.008

1.44 

--

<.011 

E.00 

E.029 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

1,7-Dimethylxanthine 

611-59-6 

Acetaminophen 

103-90-2 

Amoxicillin 

61336-70-7 

Azithromycin 

83905-01-5 

Caffeine 

58-08-2 

Carbamazep

298-46-4 

14 03/14/02 

06/20/02 08/06/02 08/06/02* 11/07/02 02/12/03 

1500 

1400 1120 

1121 

1015 

1230 

0.676 

.131 .186 

.211 

.416 

.938 

0.196 

.011 .057 

.069 

<.009

.316 

--

----

--

--

--

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

0.790

.237 .236 

.268 

.610 

.934 

E0.010 

E.017 E.030

E.036 

.035 

.058 

17 10/19/00 1300 3.42 14.0 -- -- 13.0 -- 18 10/19/00 

10/19/00 

1130 

1200 

4.05 

4.94 

16.0 

32.0 

--

--

--

--

12.0 

13.0 

--

--

a18 10/19/00 1230 1.68 <.009 -- -- 5.11 -- 

19 07/10/02 1155 <.018 <.009 MRL-ND -- <.014 -- 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number Sample Sample Cimetidine Clarithromycin Codeine Cotinine Dehydronifedipine Digoxigeni

(fig. 1) date time 51481-61-9 81103-11-9 76-57-3 486-56-6 67035-22-7 1672-46-4 

1	 03/13/02 1315 <0.007 MRL-ND <0.024 E0.009 <0.01 <0.008 2	 10/11/00 1030 .012 -- <.024 <.023 <.01 <.008 

08/29/01 1130 <.007 MRL-ND <.024 E.010 <.01 <.008 10/31/01 1000 E.005 0.057 .062 .095 E.001 <.008 12/11/01 1045 .009 E.002 <.024 .025 <.01 <.008 03/13/02 1530 E.006 E.008 E.008 E.016 <.01 <.008 06/18/02 1300 .002 MRL-ND E.004 E.017 <.01 <.008 08/07/02 1245 <.007 -- <.024 .047 <.01 --	 11/05/02 1045 .009 -- E.015 .027 <.01 --	 02/11/03 1000 .027 -- .074 <.023 <.01 --	 07/07/03 1130 <.007 MRL-ND E.001 .031 <.01 <.008 04/08/04 1000 <.007 MRL-ND <.024 <.023 <.01 <.008 09/03/04 0945 <.007 -- <.024 <.023 <.01 <.008 

3	 10/12/00 1045 <.007 -- <.024 E.005 <.01 <.008 

08/22/01 0945 <.007 MRL-ND <.024 .174 <.01 <.008 11/01/01 1300 <.007 MRL-ND <.024 E.016 <.01 <.008 12/20/01 1015 <.007 MRL-ND <.024 .040 <.01 <.008 03/21/02 1245 <.007 MRL-ND <.024 E.022 <.01 <.008 06/19/02 1030 <.007 MRL-ND <.024 .025 <.01 <.008 

4	 10/12/00 1315 <.007 -- <.024 .036 <.01 <.008 

10/12/00* 1316 <.007 -- <.024 .024 <.01 <.008 08/22/01 1100 .023 MRL-ND E.182 .033 E.002 <.008 11/01/01 1145 .085 .108 .239 E.013 <.01 <.008 12/20/01 1215 .092 E.121 E.297 .039 <.01 <.008 03/21/02 1445 .165 E.137 E.272 .064 <.01 <.008 06/19/02 1130 .049 MRL-ND .123 .029 E.003 <.008 

5	 03/22/02 1200 <.007 MRL-ND <.024 .048 <.01 <.008 6	 10/12/00 1500 <.007 -- <.024 .150 <.01 <.008 

08/22/01 1315 <.007 .018 <.024 .196 E.001 <.008 11/01/01 0930 <.007 .064 .091 .134 E.003 <.008 12/20/01 1415 .011 E.083 E.170 .247 <.01 <.008 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number Sample Sample Cimetidine Clarithromycin Codeine Cotinine Dehydronifedipine Digoxigeni

(fig. 1) date time 51481-61-9 81103-11-9 76-57-3 486-56-6 67035-22-7 1672-46-4 

6 03/22/02 1415 0.037 E0.048 E0.081 0.042 <0.01 <0.008 

06/19/02 1300 .009 MRL-ND E.019 E.018 <.01 <.008 08/06/02 1400 <.007 -- .024 .062 <.01 -- 11/07/02 1230 E.006 -- .047 .092 E.007 -- 02/12/03 0945 .024 -- .152 .200 <.01 -- 07/07/03 0945 <.007 MRL-ND .029 .089 E.006 <.008 04/13/04 0945 <.007 -- .080 .099 <.01 <.008 09/03/04 1400 <.007 -- -- .058 <.01 -- 

7 10/11/00 1030 <.007 -- <.024 .096 <.01 <.008 

08/29/01 0945 <.007 MRL-ND <.024 .047 <.01 <.008 10/31/01 1145 E.005 MRL-ND E.067 .098 <.01 <.008 12/10/01 1300 <.007 E.011 E.044 .064 E.003 <.008 03/14/02 0945 .009 E.025 E.037 .075 <.01 <.008 06/18/02 1500 <.007 MRL-ND <.024 .023 <.01 <.008 06/18/02* 1501 <.007 MRL-ND E.004 E.016 <.01 <.008 08/07/02 1030 E.004 -- .029 .105 <.01 -- 11/05/02 1245 .017 -- .058 .066 E.006 -- 02/11/03 1145 .015 -- .126 .200 <.01 -- 07/08/03 1145 <.007 -- E.008 .093 E.048 -- 07/08/03* 1146 <.007 -- E.007 .089 E.048 -- 04/07/04 1140 <.007 -- <.024 .031 <.01 -- 09/09/04 1100 <.007 -- <.024 .030 <.01 -- 

8 10/11/00 1430 <.007 -- <.024 .076 <.01 <.008 

08/29/01 1315 <.007 MRL-ND <.024 .042 <.01 <.008 03/14/02 1215 E.006 E.011 E.024 .085 <.01 <.008 

9 10/03/00 1015 <.007 -- <.024 <.023 <.01 <.008 

06/13/01 1015 <.007 MRL-ND <.024 .112 <.01 <.008 10/30/01 0945 E.002 MRL-ND <.024 E.002 <.01 <.008 12/07/01 1000 <.007 MRL-ND <.024 .050 <.01 <.008 12/07/01* 1001 <.007 MRL-ND <.024 .056 <.01 <.008 03/18/02 1245 <.007 MRL-ND <.024 .054 <.01 <.008 06/20/02 1130 <.007 MRL-ND <.024 E.019 <.01 <.008 08/01/02 1020 <.007 -- <.024 .072 <.01 -- 11/06/02 1000 <.007 -- <.024 .069 <.01 -- 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Cimetidine 

51481-61-9 

Clarithromycin 

81103-11-9 

Codeine 

76-57-3 

Cotinine 

486-56-6 

Dehydronifedipine 

67035-22-7

Digoxigeni

1672-46-4 

9 02/13/03 

02/13/03* 07/09/03 04/13/04 08/18/04 08/18/04* 

1000 

1001 

0930 

1145 

1000 

1001 

<0.007 

<.007 

<.007 

<.007 

<.007 

<.007 

--

--

MRL-ND 

MRL-ND 

--

--

<0.024 

<.024 

<.024

<.024 

<.024 

<.024 

0.100 

.100 

.023 

E.004 

.018 

.019 

<0.01 

<.01 

<.01 

<.01 

<.01 

<.01 

--

--

<0.008 

--

--

--

10 10/03/00 

06/13/01 

1100 

1000 

<.007 

<.007 

--

MRL-ND 

<.024 

<.024 

<.023 

.156 

<.01 

<.01 

<.008 

<.008 

11 10/03/00 

06/13/01 10/30/01 12/07/01 03/18/02 06/20/02 08/01/02 11/06/02 02/13/03 07/09/03 04/13/04 08/19/04 

1245 

1230 

1145 

1145 1500 1315 

1220 1145 1230 

1130 

1330 

1030 

<.007 

<.007 

E.004 

<.007 <.007<.007 

<.007 <.007 <.007 

<.007

<.007 

<.007 

--

MRL-ND 

MRL-ND 

MRL-ND MRL-ND MRL-ND MRL-ND 

MRL-ND 

------

--

<.024 

<.024 

<.024 

<.024 <.024 <.024 

<.024 <.024 <.024 

<.024 

<.024 

<.024 

<.023 

.154 

E.011 

.132 .272 .040 

.082 .058.200 

.110 

.030

.080 

<.01 

<.01 

<.01

<.01 <.01 <.01

<.01<.01 <.01 

<.01

<.01 

<.01 

<.008 

<.008 

<.008 

<.008<.008 <.008 <.008 

------

--

--

12 10/03/00 

06/13/01 06/13/01** 

1230 

1430 

1431 

<.007 

<.007 

<.007 

--

MRL-ND 

MRL-ND 

<.024 

E.008 

<.024 

.079 

.166 

<.023 

<.01 

<.01 

<.01 

<.008 

<.008 

<.008 

13 07/08/03 

04/08/04 09/10/04 

0930 

1300 

1030 

<.007 

<.007 

<.007 

MRL-ND 

MRL-ND 

--

<.024 

<.024 

<.024 

.064 

.029 

.014 

E.004 

<.01 

<.01 

<.008 

--

--

14 10/11/00 

08/29/01 10/31/01 12/11/01 

1230 

1400 

1345 

1430 

E.004 

<.007 

<.007

<.007 

--

MRL-ND 

MRL-ND 

E0.028 

<.024 

<.024 

<.024 

.076 

.074 

.040 

E.001 

.169 

<.01 

<.01 

<.01 

<.01 

<.008 

<.008 

<.008

<.008 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1)

Sample 

date 

Sample 

time 

Cimetidine 

51481-61-9

Clarithromycin 

81103-11-9 

Codeine 

76-57-3 

Cotinine 

486-56-6 

Dehydronifedipine 

67035-22-7 

Digoxigeni

1672-46-4 

14 03/14/02 

06/20/02 08/06/02 08/06/02* 11/07/02 02/12/03 

1500 

1400 

1120 

1121 

1015 

1230 

E0.006 

<.007 

<.007 

<.007 

E.006 

.010 

MRL-ND 

MRL-ND 

--

--

--

--

E0.020 

E.003 

E.005

E.005 

.041 

.072 

0.097 

.035 

.078

.088

.061 

.200 

<0.01 

<.01 

<.01 

<.01 

<.01 

<.01

<0.008 

<.008 

--

--

--

--

17 10/19/00 1300 .045 -- <.024 .787 <.01 <.008 18 10/19/00 

10/19/00 

1130 

1200 

<.007 

<.007 

--

--

<.15 

<.15 

1.32 

1.81 

<.01 

<.01 

<.008 

<.008 

a18 10/19/00 1230 .394 -- <.15 1.09 <.01 <.008 

19 07/10/02 1155 <.007 -- <.15 E.018 <.01 <.008 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Diltiazem 

42399-41-7 

Diphenhydramine 

58-73-1 

Enalaprilat 

76420-72-9 

Erythromycin 

114-07-8 

Fluoxetine 

54910-89-3 

Furosemide 

54-31-9 

1 03/13/02 1315 <0.012 <0.015 -- MRL-ND <0.018 <0.039 2 10/11/00 

08/29/01 10/31/01 12/11/01 03/13/02 06/18/02 08/07/02 11/05/02 02/11/03 07/07/03 04/08/04 09/03/04

1030 

1130 

1000 1045 

1530 1300 1245 

1045 

1000 

1130 

1000 0945

<.012 

<.012 

E.008 E.003 

<.012<.012 <.012 

.008 

<.012

<.012 

<.012 <.012 

<.015 

<.015 

E.002

<.015

<.015 <.015 <.015 

<.015 

<.015

<.015 

<.015 <.015 

<0.15 

<.15 

<.15 <.15 

--

----

------

--

--

--

MRL-ND 

0.109 

E.007 

MRL-ND MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

----

<.018 

<.018 

<.018 

<.018 

<.018 <.018 <.018 

<.018 

<.018 

<.018 

<.018 <.018 

<.039 

<.039 

<.039 

<.039 

<.039 <.039 <.039 

<.039 

<.039 

<.039 

<.039 <.039 

3 10/12/00 

08/22/01 11/01/01 12/20/01 03/21/02 06/19/02 

1045 

0945 

1300 

1015 1245 1030 

<.012 

<.012 

<.012 

<.012 <.012 <.012 

<.015

<.015 

.005 

<.015 <.015 <.015 

<.15 

--

--

------

--

MRL-ND

MRL-ND 

MRL-ND MRL-ND MRL-ND 

<.018 

<.018 

<.018 

<.018 <.018

<.018 

<.039 

<.039 

<.039 

<.039 <.039 <.039 

4 10/12/00 

10/12/00*08/22/0111/01/01 12/20/01 03/21/0206/19/02 

1315 

1316 

1100

1145 

1215 

1445 

1130 

.018 

.018 

.049 

<.012 

<.012 

.041 

.017 

.099 

.105 

.101 

.098

.092 

.134 

.049 

<.15 

<.15 

--

--

--

--

--

--

--

.087 

.248

MRL-ND 

MRL-ND 

E.218 

<.018 

<.018 

<.018 

<.018 

<.018 

<.018 

<.018

<.039 

<.039 

<.039

<.039 

<.039 

<.039 

<.039

5 03/22/02 1200 <.012 <.015 -- MRL-ND <.018 <.039 6 10/12/00 

08/22/0111/01/01

12/20/01 

1500 

1315 

0930 

1415 

E.002 

.014 

.009 

<.012 

.003 

.003 

<.015 

E.017 

<.15 

<.15 

--

--

--

E.128 

.102 

MRL-ND 

<.018 

<.018 

<.018 

<.018 

<.039 

<.039 

<.039 

<.039 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number Sample Sample Diltiazem Diphenhydramine Enalaprilat Erythromycin Fluoxetine Furosemide 

(fig. 1) date time 42399-41-7 58-73-1 76420-72-9 114-07-8 54910-89-3 54-31-9 

6 03/22/02 1415 0.015 <0.015 -- MRL-ND <0.018 <0.039 

06/19/02 1300 E.004 <.015 -- E0.103 <.018 <.039 08/06/02 1400 <.012 <.015 -- MRL-ND <.018 <.039 11/07/02 1230 <.012 E.010 -- MRL-ND <.018 <.039 02/12/03 0945 .016 E.014 -- MRL-ND <.018 <.039 07/07/03 0945 .011 .008 <0.15 MRL-ND <.018 <.039 04/13/04 0945 .017 .075 -- MRL-ND <.018 <.039 09/03/04 1400 <.012 -- <.15 -- <.018 <.039 

7 10/11/00 1030 <.012 <.015 <.15 -- <.018 <.039 

08/29/01 0945 <.012 <.015 -- MRL-ND <.018 <.039 10/31/01 1145 <.012 <.015 -- MRL-ND <.018 <.039 12/10/01 1300 E.004 E.003 -- MRL-ND <.018 <.039 03/14/02 0945 E.007 <.015 -- MRL-ND <.018 <.039 06/18/02 1500 <.012 <.015 -- E.050 <.018 <.039 06/18/02* 1501 <.012 <.015 -- E.032 <.018 <.039 08/07/02 1030 <.012 <.015 -- MRL-ND <.018 <.039 11/05/02 1245 .021 <.015 -- MRL-ND <.018 <.039 02/11/03 1145 .013 <.015 -- MRL-ND <.018 <.039 07/08/03 1145 <.012 <.015 -- MRL-ND <.018 <.039 07/08/03* 1146 <.012 <.015 -- MRL-ND <.018 <.039 04/07/04 1140 E.004 .019 -- MRL-ND <.018 <.039 09/09/04 1100 <.012 <.015 -- MRL-ND <.018 <.039 

8 10/11/00 1430 <.012 <.015 <.15 -- <.018 <.039 

08/29/01 1315 <.012 <.015 -- MRL-ND <.018 <.039 03/14/02 1215 <.012 <.015 -- MRL-ND <.018 <.039 

9 10/03/00 1015 <.012 <.015 <.15 -- <.018 <.039 

06/13/01 1015 <.012 <.015 -- MRL-ND <.018 <.039 10/30/01 0945 <.012 <.015 -- MRL-ND <.018 <.039 12/07/01 1000 <.012 <.015 -- MRL-ND <.018 <.039 12/07/01* 1001 <.012 <.015 -- MRL-ND <.018 <.039 03/18/02 1245 <.012 <.015 -- MRL-ND <.018 <.039 06/20/02 1130 <.012 <.015 -- MRL-ND <.018 <.039 08/01/02 1020 <.012 <.015 -- MRL-ND <.018 <.039 11/06/02 1000 <.012 <.015 -- MRL-ND <.018 <.039 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Diltiazem 

42399-41-7 

Diphenhydramine 

58-73-1 

Enalaprilat 

76420-72-9

Erythromycin 

114-07-8 

Fluoxetine 

54910-89-3 

Furosemide 

54-31-9 

9 02/13/03 

02/13/03* 07/09/03 04/13/04 08/18/04 08/18/04* 

1000 

1001 

0930 

1145 1000 

1001 

<0.012 

<.012 

<.012 

<.012 <.012 

<.012 

<0.015 

<.015 

<.015 

<.015 <.015 

<.015 

--

--

<0.15 

----

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

<0.018

<.018 

<.018 

<.018 <.018 

<.018 

<0.039 

<.039 

<.039 

<.039 <.039 

<.039 

10 10/03/00 

06/13/01 

1100 

1000 

<.012 

<.012 

<.015 

<.015 

<.15 

--

--

MRL-ND 

<.018 

<.018 

<.039 

<.039 

11 10/03/00 

06/13/01 10/30/01 12/07/01 03/18/02 06/20/02 08/01/02 11/06/02 02/13/03 07/09/03 04/13/04 08/19/04 

1245 

1230 11451145 1500 1315 12201145 1230 

1130 

1330 1030 

<.012 

<.012 <.012 <.012 <.012 <.012 <.012 <.012 <.012 

<.012 

<.012 <.012

<.015 

<.015 <.015 <.015 <.015 <.015 

E.007 

<.015 <.015 

<.015 

<.015<.015 

<.15 

<.15 

--------------------

--

MRL-ND 

E0.008 

MRL-ND MRL-NDMRL-NDMRL-NDMRL-ND MRL-ND 

MRL-ND 

MRL-ND MRL-ND 

<.018 

<.018 

<.018 

<.018 <.018 <.018 <.018 <.018 <.018 

<.018 

<.018 <.018 

<.039 

<.039 

<.039 

<.039 <.039 <.039 <.039 <.039 <.039 

<.039 

<.039 <.039 

12 10/03/00 

06/13/01 06/13/01** 

1230 

1430 

1431 

<.012 

<.012 

<.012 

<.015 

<.015 

<.015 

<.15 

<.15 

<.15 

--

MRL-ND 

MRL-ND 

<.018 

<.018 

<.018 

<.039 

<.039 

<.039 

13 07/08/03 

04/08/04 09/10/04 

0930 

1330 1030 

<.012 

<.012 <.012 

<.015 

<.015 <.015 

<.15 

----

MRL-ND 

MRL-NDMRL-ND 

<.018 

<.018 <.018 

<.039 

<.039 <.039 

14 10/11/00 

08/29/01 10/31/01 12/11/01

1230 

1400 1345 1430 

<.012 

<.012 <.012 <.012

<.015 

<.015 <.015 <.015 

<.15 

------

--

MRL-ND MRL-ND MRL-ND

<.018 

<.018 <.018 <.018 

<.039 

<.039 <.039 <.039 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Diltiazem 

42399-41-7 

Diphenhydramine 

58-73-1 

Enalaprilat 

76420-72-9 

Erythromycin 

114-07-8 

Fluoxetine 

54910-89-3 

Furosemide 

54-31-9 

14 03/14/02 

06/20/02 08/06/02 

08/06/02* 

11/07/02 02/12/03

1500 

1400 1120 

1121 

1015 1230 

E0.004 

<.012 <.012 

<.012 

<.012 <.012 

<0.015 

<.015 <.015 

<.015 

<.015 <.015 

--

----

--

----

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

MRL-ND MRL-ND 

<0.018 

<.018 <.018 

<.018 

<.018 <.018 

<0.039 

<.039 <.039 

<.039 

<.039 <.039 

17 10/19/00 1300 <.012 <.015 <0.15 -- <.018 <.039 18 10/19/00 

10/19/00 

1130 

1200 

<.012 

.041 

<.015 

E.021 

<.15 

<.15 

--

--

<.018 

<.018 

<.039 

<.039 

a18 10/19/00 1230 .059 E.015 <.15 -- <.018 <.039 

19 07/10/02 1155 <.012 <.015 <.15 MRL-ND <.018 <.039 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Ibuprofen 

15687-27-1 

Lisinopril 

83915-83-7 

Metformin 

657-24-9 

Miconazole 

22916-47-8 

Naproxen 

22204-53-1 

Paroxetine meta

61869-08-7 

1 03/13/02 1315 <0.018 -- <0.003 <0.018 -- <0.26 2 10/11/00 

08/29/01 10/31/01 12/11/01 03/13/02 06/18/02 08/07/02 11/05/02 02/11/03 07/07/03 04/08/04 09/03/04 

1030 

1130 

1000 

1045 

1530 

1300 1245 

1045 1000 

1130 

1000 

0945 

<.018 

<.018 

.172 

<.018 

.037 

<.018 <.018

<.018 <.018 

<.018 

<.018

<.018 

--

--

--

--

--

----

----

MRL-ND 

--

--

<.003 

<.003 

<.003 

<.003 

<.003 

<.003 <.003 

<.003 <.003 

<.003 

<.003 

<.003 

--

<.018 

<.018 

<.018 

<.018 

<.018 <.018 

<.018 <.018 

<.018 

<.018 

<.018 

--

--

--

--

--

MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

------

<.26 

<.26 

<.26 

<.26 

<.26 

<.26 

<.26 

<.26 

<.26 

--

----

3 10/12/00 

08/22/01 11/01/01 12/20/01 03/21/02 06/19/02 

1045 

0945 1300 1015 1245 

1030 

<.018 

<.018 <.018 <.018 <.018 

<.018 

MRL-ND 

--------

--

<.003 

<.003 <.003 <.003 <.003 

<.003 

--

<.018 <.018 <.018 <.018 

<.018 

--

--------

MRL-ND 

<.26 

<.26 <.26 <.26 

<.26 

--

4 10/12/00 

10/12/00* 08/22/01 11/01/01 12/20/01 03/21/02 06/19/02 

1315 

1316

1100 

1145 

1215 

1445 

1130 

<.018 

<.018 

<.018 

.114 

<.018 

.286 

<.018 

MRL-ND 

MRL-ND 

--

--

--

--

--

<.003 

<.003 

<.003 

<.003 

<.003 

<.003 

.123 

--

--

<.018 

<.018 

<.018 

<.018 

<.018 

--

--

--

--

--

--

MRL-ND 

<.26 

<.26 

<.26 

<.26 

<.26 

<.26 

--

5 03/22/02 1200 <.018 -- <.003 <.018 -- -- 6 10/12/00 

08/22/01 11/01/01 12/20/01 

1500 

1315 

0930 1415 

.244 

<.018 

.398 .351 

MRL-ND 

MRL-ND 

----

<.003 

<.003 

<.003 <.003 

--

<.018 

<.018 <.018 

--

--

----

<.26 

<.26 

<.26 <.26 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number Sample Sample Ibuprofen Lisinopril Metformin Miconazole Naproxen Paroxetine meta

(fig. 1) date time 15687-27-1 83915-83-7 657-24-9 22916-47-8 22204-53-1 61869-08-7 

6 03/22/02 1415 <0.018 -- <0.003 <0.018 -- -- 

06/19/02 1300 <.018 -- .067 <.018 MRL-ND <0.26 08/06/02 1400 <.018 -- <.003 <.018 MRL-ND -- 11/07/02 1230 <.018 -- <.003 <.018 -- -- 02/12/03 0945 <.018 -- <.003 <.018 -- -- 07/07/03 0945 <.018 MRL-ND <.003 <.018 MRL-ND <.26 04/13/04 0945 <.018 -- <.003 <.018 MRL-ND <.26 09/03/04 1400 <.018 -- <.003 <.018 -- -- 

7 10/11/00 1030 <.018 MRL-ND <.003 -- -- <.26 

08/29/01 0945 <.018 -- <.003 <.018 -- <.26 10/31/01 1145 .074 -- <.003 <.018 -- <.26 12/10/01 1300 .120 -- <.003 <.018 -- <.26 03/14/02 0945 .173 -- <.003 <.018 -- <.26 06/18/02 1500 <.018 -- <.003 <.018 0.261 <.26 06/18/02* 1501 <.018 -- <.003 <.018 .150 <.26 08/07/02 1030 <.018 -- <.003 <.018 MRL-ND -- 11/05/02 1245 <.018 -- <.003 <.018 -- -- 02/11/03 1145 <.018 -- <.003 <.018 MRL-ND -- 07/08/03 1145 <.018 -- <.003 <.018 -- -- 07/08/03* 1146 <.018 -- <.003 <.018 -- -- 04/07/04 1140 <.018 -- <.003 <.018 -- <.26 09/09/04 1100 <.018 -- <.003 <.018 -- <.26 

8 10/11/00 1430 <.018 MRL-ND <.003 -- -- <.26 

08/29/01 1315 <.018 -- <.003 <.018 -- <.26 03/14/02 1215 .099 -- <.003 <.018 -- <.26 

9 10/03/00 1015 <.018 MRL-ND <.003 -- -- <.26 

06/13/01 1015 <.018 -- <.003 <.018 -- <.26 10/30/01 0945 <.018 -- <.003 <.018 -- <.26 12/07/01 1000 <.018 -- <.003 <.018 -- <.26 12/07/01* 1001 <.018 -- <.003 <.018 -- <.26 03/18/02 1245 <.018 -- <.003 <.018 -- <.26 06/20/02 1130 <.018 -- <.003 <.018 MRL-ND <.26 08/01/02 1020 <.018 -- <.003 <.018 MRL-ND -- 11/06/02 1000 <.018 -- <.003 <.018 -- -- 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Ibuprofen 

15687-27-1

Lisinopril 

83915-83-7 

Metformin 

657-24-9 

Miconazole 

22916-47-8 

Naproxen 

22204-53-1 

Paroxetine meta

61869-08-7 

9 02/13/03 

02/13/03* 07/09/03 04/13/04 08/18/04 08/18/04* 

1000 

1001 

0930 

1145 1000 

1001 

<0.018 

<.018 

<.018 

<.018 <.018 

<.018 

--

--

MRL-ND 

----

--

<0.003 

<.003 

<.003 

<.003 <.003 

<.003 

<0.018 

<.018 

<.018 

<.018 <.018 

<.018 

--

--

MRL-ND 

----

--

--

--

<0.26 

----

--

10 10/03/00 

06/13/01 

1100 

1000 

<.018 

<.018 

MRL-ND 

--

<.003 

<.003 

--

<.018 

--

--

<.26 

<.26 

11 10/03/00 

06/13/01 10/30/01 12/07/01 03/18/02 06/20/02 08/01/02 11/06/02 02/13/03 07/09/03 04/13/04 08/19/04 

1245 

1230 1145 1145 

1500 

1315 1220 

1145 1230 

1130 

1330 1030 

<.018 

<.018 <.018 <.018 

.139 

<.018 <.018 

<.018 <.018 

<.018 

<.018 <.018 

MRL-ND 

MRL-ND 

------

--

----

--------

<.003 

<.003 <.003 <.003 

<.003 

<.003 <.003 

<.003 <.003 

<.003 

<.003 <.003 

--

<.018 <.018 <.018 

<.018 

<.018 <.018 

<.018 <.018 

<.018 

<.018 <.018 

--

------

--

MRL-ND MRL-ND 

MRL-ND 

--------

<.26 

<.26 <.26 <.26 

<.26 

<.26 

<.26 

--

--------

12 10/03/00 

06/13/01 06/13/01** 

1230 

1430

1431 

<.018 

.299 

<.018 

MRL-ND 

MRL-ND

MRL-ND 

<.003 

<.003 

<.003 

--

<.018 

<.018 

--

--

--

<.26 

<.26 

<.26 

13 07/08/03 

04/08/04 09/10/04 

0930 

1300 

1030 

<.018 

<.018 

<.018 

MRL-ND 

MRL-ND 

--

<.003 

.009 

<.003 

<.018 

<.018 

<.018 

MRL-ND 

MRL-ND 

--

<.26 

<.26 

--

14 10/11/00 

08/29/01 10/31/01 12/11/01 

1230 

1400 1345 

1430 

<.018 

<.018 <.018 

.296 

MRL-ND 

----

--

<.003 

<.003 <.003 

<.003 

--

<.018 <.018 

<.018 

--

----

--

<.26 

<.26 <.26 

<.26 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Ibuprofen 

15687-27-1 

Lisinopril 

83915-83-7 

Metformin 

657-24-9 

Miconazole 

22916-47-8 

Naproxen 

22204-53-1 

Paroxetine meta

61869-08-7

14 03/14/02 

06/20/02 08/06/02 08/06/02* 11/07/02 02/12/03 

1500 

1400 

1120 

1121 

1015 1230 

0.079 

<.018 

<.018 

<.018 

<.018 <.018

--

--

--

--

----

<0.003 

.015 

<.003 

<.003 

<.003 <.003 

<0.018 

<.018 

<.018 

<.018 

<.018 <.018 

--

0.105 

MRL-ND 

MRL-ND 

----

<0.26 

<.26 

--

--

----

17 10/19/00 1300 .905 -- <.003 -- -- <.26 18 10/19/00 

10/19/00 

1130 

1200 

1.52 

<.018 

--

--

<.003 

<.003 

--

--

--

--

<.26 

<.26 

a18 10/19/00 1230 .114 -- <.003 -- -- <.26 

19 07/10/02 1155 <.018 -- <.003 <.018 MRL-ND <.26 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Salbutamol (Albuterol) 

18559-94-9 

Sulfamethoxazole 

723-46-6 

Thiabendazole 

148-79-8 

Trimethoprim 

738-70-5 

Urobilin 

1856-98-0 

Warfarin 

81-81-2 

1 03/13/02 1315 <0.029 <0.023 <0.011 <0.014 -- <0.001 2 10/11/00 

08/29/01 10/31/01 12/11/01 03/13/02 06/18/02 08/07/02 11/05/02 02/11/03 07/07/03 04/08/04 09/03/04 

1030 

1130 

1000 

1045 

1530 1300 1245 

1045 1000 

1130 

1000 0945 

<.029 

<.029 

<.029 

<.029 

<.029 <.029 <.029 

<.029 <.029 

<.029 

<.029 <.029

.024 

<.023 

.100 

E.021 

<.023 

.025 .093 

.073 .133 

.071 

<.023 <.023 

<.011 

<.011 

<.011 

<.011 

E.007 

<.011 <.011 

<.011 <.011 

<.011 

----

<.014 

<.014 

.033 

E.001 

.024 

<.014 <.014 

.027 .028 

E.003 

E.006 

<.014 

MRL-ND 

MRL-ND 

--

--

--

--

----

----

--

--

<.001 

<.001 

<.001 

<.001 

<.001 

<.001<.001 

<.001 <.001 

<.001 

<.001 

<.001 

3 10/12/00 

08/22/01 11/01/01 12/20/01 03/21/02 06/19/02 

1045 

0945 1300 10151245 1030 

<.029 

<.029 <.029 <.029 <.029 <.029 

<.023 

<.023 <.023 <.023 <.023 <.023 

<.011 

<.011 <.011 <.011 <.011 <.011

<.014 

<.014 <.014 <.014 <.014 <.014 

MRL-ND 

----------

<.001 

<.001 <.001 <.001 <.001 <.001 

4 10/12/00 

10/12/00* 08/22/01 11/01/01 12/20/01 03/21/02 06/19/02 

1315 

1316 

1100 

1145 

1215 

1445 

1130 

<.029 

<.029 

<.029 

E.005 

E.019 

.034 

.010 

.112 

.137 

.083 

.123 

.098 

.152 

.088 

<.011 

<.011 

<.011 

<.011 

<.011 

.691 

<.011 

.023 

.023 

.040 

E.013 

.050 

.252 

.098 

MRL-ND 

MRL-ND 

--

--

--

--

--

<.001 

<.001 

<.001 

<.001 

<.001 

<.001 

<.001 

5 03/22/02 1200 <.029 <.023 <.011 <.014 -- <.001 6 10/12/00 

08/22/01 11/01/01 12/20/01 

1500 

1315 

0930 

1415 

<.029 

<.029 

<.029 

E.013 

.040 

.096 

.083 

.100 

<.011 

<.011 

<.011 

<.011 

E.012 

.048 

.036 

.058 

MRL-ND 

MRL-ND 

--

--

<.001 

<.001 

<.001 

<.001 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number Sample Sample Salbutamol (Albuterol) Sulfamethoxazole Thiabendazole Trimethoprim Urobilin Warfarin 

(fig. 1) date time 18559-94-9 723-46-6 148-79-8 738-70-5 1856-98-0 81-81-2 

6 03/22/02 1415 E0.015 0.084 <0.011 0.115 -- <0.001 

06/19/02 1300 <.029 .059 <.011 .043 -- <.001 08/06/02 1400 <.029 .102 <.011 .026 -- <.001 11/07/02 1230 E.010 .115 <.011 .051 -- <.001 02/12/03 0945 E.018 <.023 <.011 .097 -- <.001 07/07/03 0945 <.029 .130 <.011 .041 MRL-ND <.001 04/13/04 0945 <.029 .080 <.011 .036 -- <.001 09/03/04 1100 <.029 .016 .050 .017 -- <.001 

7 10/11/00 1030 <.029 .042 <.011 E.003 MRL-ND <.001 

08/29/01 0945 <.029 .026 <.011 E.010 -- <.001 10/31/01 1145 <.029 E.010 <.011 .026 -- <.001 12/10/01 1300 E.007 .024 E.026 .029 -- <.001 03/14/02 0945 E.007 .072 E.088 .058 -- <.001 06/18/02 1500 <.029 .037 <.011 E.011 -- <.001 06/18/02* 1501 <.029 .027 <.011 E.011 -- <.001 08/07/02 1030 <.029 .167 <.011 .032 -- <.001 11/05/02 1245 E.012 .117 <.011 .050 -- <.001 02/11/03 1145 <.029 .228 <.011 .107 -- <.001 07/08/03 1145 <.029 .098 <.011 E.016 -- <.001 07/08/03* 1146 <.029 .110 <.011 .032 -- <.001 04/07/04 1140 <.029 <.023 <.011 .026 -- <.001 09/09/04 1000 <.029 <.023 <.011 <.014 -- <.001 

8 10/11/00 1430 <.029 .035 <.011 E.002 MRL-ND <.001 

08/29/01 1315 <.029 <.023 <.011 <.014 -- <.001 03/14/02 1215 E.006 .053 E.030 .357 -- <.001 

9 10/03/00 1015 <.029 <.023 <.011 <.014 MRL-ND <.001 

06/13/01 1015 <.029 <.023 <.011 E.001 -- <.001 10/30/01 0945 <.029 E.002 <.011 <.014 -- <.001 12/07/01 1000 <.029 <.023 <.011 <.014 -- <.001 12/07/01* 1001 <.029 <.023 <.011 <.014 -- <.001 03/18/02 1245 <.029 <.023 <.011 <.014 -- <.001 06/20/02 1130 <.029 <.023 <.011 <.014 -- <.001 08/01/02 1020 <.029 <.023 <.011 <.014 -- <.001 11/06/02 1000 <.029 <.023 <.011 <.014 -- <.001 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Salbutamol (Albuterol) 

18559-94-9 

Sulfamethoxazole

723-46-6 

Thiabendazole 

148-79-8

Trimethoprim 

738-70-5 

Urobilin 

1856-98-0 

Warfarin 

81-81-2 

9 02/13/03 

02/13/03* 07/09/03 04/13//04 08/18/04 08/18/04* 

1000 

1001 

0930 

1145 

1000 

1001 

<0.003 

<.029 

<.029 

<.029 

<.029 

<.029 

<0.023 

<.023 

<.023 

<.023 

<.023 

<.023 

<0.011 

<.011 

<.011 

<.011 

<.011 

<.011 

<0.014 

<.014 

<.014 

<.014 

<.014 

<.014 

--

--

MRL-ND 

--

--

--

<0.001 

<.001 

<.001 

<.001 

<.001 

<.001 

10 10/03/00 

06/13/01 

1100 

1000 

<.029 

<.029 

<.023 

<.023 

<.011 

<.011 

<.014 

E.003 

MRL-ND 

--

<.001 

<.001 

11 10/03/00 

06/13/01 10/30/01 12/07/01 03/18/02 06/20/02 08/01/02 11/06/02 02/13/03 07/09/03 04/13/04 08/19/04 

1245 

1230 1145 

1145 1500 

1315 1220 1145 1230 

1130 

1330 1030 

<.029 

<.029 <.029 

<.029 <.029 

<.029 <.029 <.029 <.003 

<.029 

<.029 <.029 

<.023 

<.023 <.023 

.039 .024 

<.023<.023 <.023 <.023 

<.023 

<.023 <.023 

<.011 

<.011 <.011 

<.011 <.011 

<.011 <.011 <.011 <.011 

<.011 

<.011 <.011 

<.014 

E.003 E.003 

<.014 <.014 

<.014 <.014 <.014 <.014 

<.014 

<.014 <.014 

MRL-ND 

MRL-ND 

----

----

------------

<.001 

<.001 <.001 

<.001 <.001 

<.001 <.001 <.001 <.001 

<.001 

<.001 <.001 

12 10/03/00 

06/13/0106/13/01** 

1230 

1430 

1431 

<.029 

<.029 

<.029 

<.023 

.014 

<.023 

<.011 

.048 

<.011 

<.014 

.015 

<.014 

MRL-ND 

MRL-ND 

MRL-ND 

<.001 

<.001 

<.001 

13 07/08/03 

04/08/04 09/10/04 

0930 

1300 

1030 

<.029 

<.029 

<.029 

.074 

.074 

<.023 

<.011 

<.011 

<.011 

E.002 

.015 

<.014 

MRL-ND 

--

--

<.001 

<.001 

<.001 

14 10/11/00 

08/29/01 10/31/01 12/11/01 

1230 

1400 1345 

1430

<.029 

<.029 <.029 

<.029 

E.016 

<.023 <.023 

.051 

<.011 

<.011 <.011 

E.045 

<.014 

<.014 <.014 

.038 

MRL-ND 

----

--

<.001 

<.001 <.001 

<.001 
Table 5. Concentrations of selected pharmaceutical compounds in base-flow samples.—Continued 

[Numbers below compound are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter in filtered samples; <, less than; --, no data; MRL-ND, no quantifiable presence not quantified; E, estimated; *, replicate sample; **, field equipment blank] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Salbutamol (Albuterol) 

18559-94-9

Sulfamethoxazole 

723-46-6 

Thiabendazole 

148-79-8 

Trimethoprim 

738-70-5 

Urobilin 

1856-98-0

Warfarin 

81-81-2 

14 03/14/02 

06/20/02 08/06/02 08/06/02* 11/07/02 02/12/03 

1500 

1400 

1120 

1121 

1015 1230 

E0.005 

<.029 

<.029 

<.029 

E.004 E.003 

0.055 

E.021 

.053 

.089 

.091 .104 

E0.056 

<.011 

<.011 

<.011 

<.011 <.011 

0.042 

E.009 

<.014 

.011 

.028 .060 

--

--

--

--

----

<0.001 

<.001 

<.001 

<.001 

<.001 <.001 

17 10/19/00 1300 <.029 <.023 <.011 E.004 MRL-ND <.001 18 10/19/00 

10/19/00 

1130 

1200 

<.029 

<.029 

<.023 

<.023 

<.011 

<.011 

.029 

.020 

MRL-ND 

0.671 

<.001 

<.001 

a18 10/19/00 1230 <.029 .252 <.011 .036 MRL-ND <.001 

19 7/10/02 1155 <.029 E.007 <.011 <.014 -- <.001 

aTreated effluent. 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004. 

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

Am

Site Sample Sample Sample Sample Mean Specific pH Water Oxygen, or

number 

(fig. 1) 

start 

date 

start 

time 

end 

date 

end 

time 

discharge 

(ft3/s) 

conductance 

(μS/cm) 

(standard 

units) 

temperature 

(°C) 

Turbidity 

(NTU) 

dissolved 

(mg/L) 

2 05/09/03 2300 05/11/03 1800 482 495 -- -- -- -- 

06/02/03 0510 06/03/03 0910 167 430 -- -- -- -- 06/10/03 1900 06/11/03 1700 262 450 -- -- -- -- 06/29/03 1800 07/01/03 0300 150 E445 -- -- -- -- 08/30/03 1100 08/30/03 2330 141 440 -- -- -- -- 08/31/03 0845 08/31/03 1345 3,776 270 -- -- -- -- 05/25/04 0230 05/25/04 1015 1,780 305 -- -- -- -- 

6 10/27/02 0900 10/28/02 0150 319 630 -- -- -- -- 

02/13/03 1030 02/14/03 1800 667 -- -- -- -- -- 03/19/03 1505 03/19/03 1730 171 1,580 -- -- -- -- 03/19/03* 1506 03/19/03 1731 171 1,560 -- -- -- -- 04/16/03 1400 04/17/03 0600 169 -- -- -- -- -- 04/19/03 0950 04/20/03 0930 1,596 400 -- -- -- -- 04/23/03 2120 04/24/03 1155 633 475 -- -- -- -- 05/08/03 0915 05/09/03 1300 312 -- -- -- -- -- 05/09/03 2200 05/11/03 0600 1,468 320 -- -- -- -- 05/09/03* 2201 05/11/03 0601 1,468 E305 -- -- -- -- 06/02/03 0310 06/03/03 1200 1,925 325 -- -- -- -- 08/28/03 1600 08/29/03 0700 12,811 415 -- -- -- -- 08/31/03 0725 08/31/03 1140 7,281 175 -- -- -- -- 05/24/04 2310 05/25/04 1020 1,163 335 -- -- -- -- 

7 04/23/03 2200 04/24/03 1330 832 500 7.6 14.6 295 8.4 

04/24/03 1345 04/25/03 1300 439 540 7.6 14.3 355 8.2 05/08/03 1900 05/09/03 0900 351 605 7.8 18.6 300 7.4 05/09/03 2200 05/11/03 2000 1,793 E350 7.8 19.2 1,090 6.2 06/02/03 0345 06/03/03 0900 2,463 345 7.4 17.3 315 7.8 09/11/03 1315 09/15/03 0500 930 435 8.0 23.9 530 7.2 05/25/04 0800 05/25/04 0900 3,306 285 7.5 20.4 1,200 7.4 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

Am

Site Sample Sample Sample Sample Mean Specific pH Water Oxygen, or

number 

(fig. 1)

start 

date 

start 

time 

end 

date

end 

time 

discharge 

(ft3/s) 

conductance 

(μS/cm) 

(standard 

units) 

temperature 

(°C) 

Turbidity 

(NTU) 

dissolved 

(mg/L) 

9 10/23/02 1450 10/24/02 0250 77 355 -- -- -- -- 

10/23/02* 1451 10/24/02 0251 77 340 -- -- -- -- 10/27/02 0845 10/27/02 1740 137 210 -- -- -- -- 02/14/03 0000 02/14/03 1845 202 -- -- -- -- -- 02/14/03* 0001 02/14/03 1846 202 -- -- -- -- -- 03/20/03 0320 03/20/03 0520 94 715 -- -- -- -- 04/06/03 0830 04/06/03 1325 104 -- -- -- -- -- 04/19/03 0955 04/19/03 1830 519 200 -- -- -- -- 04/23/03 2100 04/24/03 0450 327 175 -- -- -- -- 05/08/03 0910 05/09/03 0800 229 -- -- -- -- -- 05/10/03 0455 05/10/03 1730 272 170 -- -- -- -- 06/02/03 0000 06/03/03 0000 407 145 -- -- -- -- 06/12/03 2025 06/13/03 1155 1,245 185 -- -- -- -- 06/12/03* 2026 06/13/03 1156 1,245 185 -- -- -- -- 06/09/04 1130 06/10/04 1400 88 280 -- -- -- -- 

11 03/20/03 0415 03/20/03 0555 84 -- -- -- -- -- 

04/06/03 0930 04/06/03 1520 46 -- -- -- -- -- 04/19/03 0955 04/19/03 1830 913 310 7.5 15.6 4.8 8.6 04/23/03 2040 04/24/03 0520 348 430 7.6 15.4 103 8.5 05/08/03 1015 05/09/03 0800 200 335 7.3 18.3 61 3.1 05/10/03 0500 05/10/03 1800 305 235 7.3 18.7 145 6.7 06/02/03 0015 06/03/03 0015 419 410 7.4 18.6 64 6.8 06/12/03 2030 06/13/03 1200 2,236 160 7.5 21.2 410 5.5 08/28/03 1930 08/29/03 0400 370 270 7.5 25.8 220 5.0 06/09/04 1000 06/10/04 1400 1,535 365 7.5 22.3 26 6.2 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date

Sample 

end 

time 

Mean 

discharge 

(ft3/s) 

Specific 

conductance 

(μS/cm) 

pH 

(standard 

units) 

Water 

temperature 

(°C) 

Turbidity 

(NTU) 

Oxygen, 

dissolved 

(mg/L) 

Am

or

13 06/02/03 

06/11/03 06/29/03 07/09/03 09/11/03 09/13/03 05/25/04 05/25/04*

0600 

02451845 2100 1315 

1300 

1115 

1116 

06/03/03 

06/11/03 07/01/03 07/11/03 09/13/03 

09/15/03 

05/25/04 

05/25/04 

1800 

2300 0345 1000 0000 

1200 

1230 

1231 

1,830 

499 481 550 520 

1,974 

2,816 

2,816 

415 

635 

E620 

575 

1,160 

410 

425 

435 

--

--

--

--

--

--

--

--

2.1 

3.6

4.0 

4.3 

2.5 

.6 

1.4 

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

--

14 10/23/02 

10/27/02

1930 

1000 

10/25/02 

10/28/02 

0315 

1700 

189 

198 

580 

475

--

--

4.6 

2.2 

--

--

--

--
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

NO2+NO3, Nitrite, OrthoSite Sample Sample Sample Sample as N, as N, Nitrogen, phosphate, Phosphorus, Phosphorus, Es

number start start end end dissolved dissolved total dissolved dissolved total 

(fig. 1) date time date time (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (co

2 05/09/03 2300 05/11/03 1800 0.99 0.052 1.99 0.10 0.11 0.23 

06/02/03 0510 06/03/03 0910 2.10 .083 4.40 .18 .20 .71 E06/10/03 1900 06/11/03 1700 1.24 .029 3.24 .11 .12 .65 06/29/03 1800 07/01/03 0300 2.45 .026 4.95 .20 .22 1.12 08/30/03 1100 08/30/03 2330 3.48 .032 5.68 .52 .58 1.16 08/31/03 0845 08/31/03 1345 1.36 .033 5.06 .13 .16 1.54 05/25/04 0230 05/25/04 1015 .94 .027 4.94 .01 .12 1.21 

6 10/27/02 0900 10/28/02 0150 4.49 .073 5.89 1.03 1.21 1.50 

02/13/03 1030 02/14/03 1800 4.92 .246 17.9 1.08 1.15 6.30 03/19/03 1505 03/19/03 1730 3.83 .361 7.73 1.19 1.35 1.60 03/19/03* 1506 03/19/03 1731 3.83 .361 7.73 1.17 1.38 1.55 04/16/03 1400 04/17/03 0600 -- -- -- -- -- -- 04/19/03 0950 04/20/03 0930 1.64 .072 8.84 .23 .26 2.73 04/23/03 2120 04/24/03 1155 1.86 .051 3.26 .19 .21 .37 05/08/03 0915 05/09/03 1300 -- -- -- -- -- -- 05/09/03 2200 05/11/03 0600 1.35 .083 5.95 .15 .18 1.35 05/09/03* 2201 05/11/03 0601 1.36 .084 4.16 .15 .18 1.06 06/02/03 0310 06/03/03 1200 1.94 .076 3.24 .32 .37 .58 08/28/03 1600 08/29/03 0700 2.74 .063 5.54 .57 .64 1.45 108/31/03 0725 08/31/03 1140 1.19 .019 2.99 .15 .19 .77 05/24/04 2310 05/25/04 1020 1.43 .105 3.53 .15 .22 .69 

7 04/23/03 2200 04/24/03 1330 2.05 .071 4.15 .22 .27 .80 

04/24/03 1345 04/25/03 1300 1.65 .048 3.25 .10 .22 .43 05/08/03 1900 05/09/03 0900 -- -- -- -- -- -- 05/09/03 2200 05/11/03 2000 1.34 .061 4.54 .10 .12 1.03 06/02/03 0345 06/03/03 0900 2.01 .081 4.01 .32 .35 .86 09/11/03 1315 09/15/03 0500 2.26 .109 3.06 .33 .40 .51 05/25/04 0800 05/25/04 0900 .24 .102 4.14 .03 .11 1.13 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

NO2+NO3, Nitrite, OrthoSite Sample Sample Sample Sample as N, as N, Nitrogen, phosphate, Phosphorus, Phosphorus, Es

number start start end end dissolved dissolved total dissolved dissolved total 

(fig. 1) date time date time (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (co

9 10/23/02 1450 10/24/02 0250 0.81 0.028 1.91 0.06 0.08 0.17 

10/23/02* 1451 10/24/02 0251 .82 .028 1.92 .06 .08 .17 10/27/02 0845 10/27/02 1740 .68 .032 1.88 .06 .08 .26 02/14/03 0000 02/14/03 1845 .58 .035 3.98 .06 .11 .71 02/14/03* 0001 02/14/03 1846 .58 .034 3.68 .07 .11 .70 03/20/03 0320 03/20/03 0520 -- -- -- -- -- -- 04/06/03 0830 04/06/03 1325 -- -- -- -- -- -- 04/19/03 0955 04/19/03 1830 .53 .020 2.23 E.01 .06 .38 04/23/03 2100 04/24/03 0450 .33 .015 1.53 .07 .10 .23 05/08/03 0910 05/09/03 0800 -- -- -- -- -- -- 05/10/03 0455 05/10/03 1730 .58 .037 1.78 .05 .07 .15 06/02/03 0000 06/03/03 0000 -- -- -- -- -- -- >06/12/03 2025 06/13/03 1155 1.21 .038 2.81 .15 .18 .35 06/12/03* 2026 06/13/03 1156 1.23 .038 2.83 .15 .18 .35 06/09/04 1130 06/10/04 1400 .26 .063 1.80 <.02 .08 .43 

11 03/20/03 0415 03/20/03 0555 -- -- -- -- -- -- 

04/06/03 0930 04/06/03 1520 -- -- -- -- -- -- 04/19/03 0955 04/19/03 1830 .32 .031 4.42 <.02 E.02 .94 04/23/03 2040 04/24/03 0520 1.23 .069 3.03 .09 .12 .31 05/08/03 1015 05/09/03 0800 -- -- -- -- -- -- 05/10/03 0500 05/10/03 1800 .55 .067 2.25 .06 .08 .18 06/02/03 0015 06/03/03 0015 .47 .032 2.97 .04 .06 .33 >06/12/03 2030 06/13/03 1200 .43 .030 5.73 <.02 .06 1.34 08/28/03 1930 08/29/03 0400 .48 .047 5.08 .02 .06 1.24 106/09/04 1000 06/10/04 1400 .44 .037 1.64 .05 .11 .24 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

NO2+NO3, 

as N, 

dissolved 

(mg/L) 

Nitrite, 

as N, 

dissolved 

(mg/L) 

Nitrogen, 

total 

(mg/L) 

Orthophosphate, 

dissolved 

(mg/L) 

Phosphorus, 

dissolved 

(mg/L) 

Phosphorus, 

total 

(mg/L) 

Es(co

13 06/02/03 

06/11/03 06/29/03 07/09/0309/11/03 09/13/03 05/25/04 05/25/04* 

0600 

0245 

1845 2100 

1315 

1300

1115 

1116 

06/03/03 

06/11/03 

07/01/03 07/11/03 

09/13/03 

09/15/03 

05/25/04 

05/25/04 

1800 

2300 

0345 1000 

0000 

1200 

1230 

1231 

2.09 

3.55 

4.02 4.29 

2.47 

.61 

1.43 

1.41 

0.044 

.073 

.098 .060 

.134 

.118

.048 

.051 

3.59 

4.85 

6.22 6.89 

4.57 

1.61 

3.30 

2.81 

0.25 

.51 

.65 .76 

.26 

<.18 

.07 

.08 

0.28 

.50 

.73 .81 

.29 

.07 

.11 

.10 

0.60 

.78 

1.51 1.63 

.89 

.24 

.62 

.43 

14 10/23/02 

10/27/02 

1930 

1000 

10/25/02 

10/28/02 

0315 

1700 

4.60 

2.19 

.076 

.054 

6.10 

3.39 

1.0 

.33 

1.01 

.40 

1.25 

.60 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

Carbon Biochemical Chemical 

Site Sample Sample Sample Sample Total Chloride, Suspended organic, oxygen oxygen o

number start start end end coliform dissolved sediment total demand demand d

(fig. 1) date time date time (col/100 mL) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

2 05/09/03 2300 05/11/03 1800 257,000 47.9 152 8.9 -- 23 

06/02/03 0510 06/03/03 0910 >242,000 47.8 915 14.3 3.6 41 06/10/03 1900 06/11/03 1700 242,000 41.9 724 14.2 7.4 E40 06/29/03 1800 07/01/03 0300 242,000 40.6 1,280 17.5 18 43 08/30/03 1100 08/30/03 2330 242,000 41.4 663 14.5 9.2 43 08/31/03 0845 08/31/03 1345 155,000 19.1 1,940 33.8 9.5 70 05/25/04 0230 05/25/04 1015 >242,000 15.0 1,830 39.6 4.5 90 

6 10/27/02 0900 10/28/02 0150 -- 63.5 167 35.4 36 30 

02/13/03 1030 02/14/03 1800 -- -- 1,940 74.9 -- E140 03/19/03 1505 03/19/03 1730 K970 335 112 12.6 -- 42 03/19/03* 1506 03/19/03 1731 -- 350 115 11.2 -- 43 04/16/03 1400 04/17/03 0600 -- -- 205 -- -- -- 04/19/03 0950 04/20/03 0930 >48,400 65.2 2,298 63.2 -- 130 04/23/03 2120 04/24/03 1155 175,000 66.2 147 9.6 -- 31 05/08/03 0915 05/09/03 1300 -- -- 206 -- E3.9 -- 05/09/03 2200 05/11/03 0600 830,000 35.8 1,917 44.9 E3.9 60 05/09/03* 2201 05/11/03 0601 -- 35.6 1,848 47.7 -- 100 06/02/03 0310 06/03/03 1200 >24,200 40.9 159 9.9 7.8 37 08/28/03 1600 08/29/03 0700 >2,400,000 45.3 567 26.3 5.2 29 08/31/03 0725 08/31/03 1140 >48,300 10.2 815 17.8 12 46 05/24/04 2310 05/25/04 1020 >2,400,000 37.7 821 32.0 6.2 63 

7 04/23/03 2200 04/24/03 1330 220,000 67.2 2,906 16.5 -- 25 

04/24/03 1345 04/25/03 1300 283,000 68.7 355 49.5 -- E170 05/08/03 1900 05/09/03 0900 -- -- 260 -- -- -- 05/09/03 2200 05/11/03 2000 955,000 38.7 2,433 28.5 -- 50 06/02/03 0345 06/03/03 0900 >242,000 41.5 299 16.2 7.1 57 09/11/03 1315 09/15/03 0500 -- 43.7 1,900 8.1 -- 27 05/25/04 0800 05/25/04 0900 >2,400,000 14.9 1,625 32.0 5.4 81 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

Carbon Biochemical Chemical 

Site Sample Sample Sample Sample Total Chloride, Suspended organic, oxygen oxygen o

number start start end end coliform dissolved sediment total demand demand d

(fig. 1) date time date time (col/100 mL) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

9 10/23/02 1450 10/24/02 0250 -- 25.7 64 9.1 E60 26 

10/23/02* 1451 10/24/02 0251 -- 25.6 59 9.4 E68 23 10/27/02 0845 10/27/02 1740 -- 14.6 109 5.5 25.0 36 02/14/03 0000 02/14/03 1845 -- -- 320 26.7 -- E70 02/14/03* 0001 02/14/03 1846 -- -- 54 26.9 -- E90 03/20/03 0320 03/20/03 0520 5,120 165 102 12.8 -- 54 04/06/03 0830 04/06/03 1325 -- -- 198 -- -- -- 04/19/03 0955 04/19/03 1830 >24,200 26.7 159 11.9 -- 46 04/23/03 2100 04/24/03 0450 >242,000 18.3 125 9.2 -- 33 05/08/03 0910 05/09/03 0800 -- -- 171 -- <2 -- 05/10/03 0455 05/10/03 1730 710,000 14.1 195 9.6 <2 23 06/02/03 0000 06/03/03 0000 >24,200 12.6 64 10.5 11 47 06/12/03 2025 06/13/03 1155 1,300,000 14.7 1,130 10.2 15 35 06/12/03* 2026 06/13/03 1156 -- 15.3 318 9.4 12 34 06/09/04 1130 06/10/04 1400 >242,000 31.1 257 14.7 14 55 

11 03/20/03 0415 03/20/03 0555 -- -- 63 -- -- -- 

04/06/03 0930 04/06/03 1520 -- -- 59 -- -- -- 04/19/03 0955 04/19/03 1830 >48,400 43.0 1,146 58.8 -- 114 04/23/03 2040 04/24/03 0520 >242,000 57.1 109 10.8 -- 31 05/08/03 1015 05/09/03 0800 -- -- 118 -- E23 -- 05/10/03 0500 05/10/03 1800 2,400,000 20.5 -- 8.7 E22 32 06/02/03 0015 06/03/03 0015 >24,200 49.0 60 15.6 16 55 06/12/03 2030 06/13/03 1200 1,410,000 <.2 2,540 22.2 18 89 08/28/03 1930 08/29/03 0400 2,400,000 26.5 820 43.1 19 30 06/09/04 1000 06/10/04 1400 >242,000 35.3 71 10.8 6.6 34 
Table 6. Physical properties, nutrients, bacteria, and selected chemical concentrations in stormwater samples collected between October 2002 and June 2004.—Con

[ft3/s, cubic feet per second; μS/cm, microsiemens per centimeter at 25 degrees Celsius; °C, degrees Celsius; NTU, Nephelometric Turbidity Units; mg/L, milligrams per liter; +, plus; N, nitrogen; NO2 + colonies per 100 milliliters; --, no data; E, estimated; <, less than; *, replicate sample; >, greater than; K, estimated based on non-ideal colony count] 

Site 

number 

(fig. 1)

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time

Total 

coliform 

(col/100 mL) 

Chloride, 

dissolved 

(mg/L) 

Suspended 

sediment 

(mg/L) 

Carbon 

organic, 

total 

(mg/L)

Biochemical 

oxygen 

demand 

(mg/L) 

Chemical 

oxygen 

demand 

(mg/L) 

o

d

13 06/02/03 

06/11/0306/29/03 07/09/03 09/11/03 09/13/03 05/25/04 05/25/04* 

0600 

02451845 

2100 

1315 

1300 

1115 

1116 

06/03/03 

06/11/03 07/01/03 

07/11/03 

09/13/03 

09/15/03 

05/25/04 

05/25/04 

1800 

2300 0345 

1000 

0000 

1200 

1230 

1231 

>242,000 

148,000 170,000 

>240,000 

>242,000 

>242,000 

>242,000 

--

50.7 

71.5 70.1 

70.7 

61.8 

39.9 

31.0 

30.8 

187 

184 614 

886 

436 

1,060 

459 

437 

9.9 

13.0 23.7 

20.2

9.8 

15.1 

10.7 

--

8.6 

20 10 

12 

3.3 

3.9 

--

--

34 

E30 

56 

44 

35 

34 

20 

--

14 10/23/02

10/27/02 

1930 

1000 

10/25/02 

10/28/02 

0315 

1700 

--

--

57.8 

41.4 

140 

64 

10.6 

7.8 

E58 

34 

23 

22 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples. 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

1,4-Dichlorobenzene 

106-46-7 

17-αEthynyl estradiol 

57-63-6 

17-βEstradiol 

50-28-2 

1-Methylnaphthalene 

90-12-0 

2,6-Dimethylnaphthalene 

581-42-0 

2-Methylnaphthalene 

91-57-6 

Dich

iso

1

2 06/29/03 

08/30/0308/31/03 

1800 

1100 0845 

07/01/03 

08/30/03 08/31/03 

0300 

2330 1345 

<0.5 

<.5 <.5 

<5 

<5 <5 

<5 

<5 <5 

<0.5 

<.5 <.5 

<0.5 

<.5 <.5 

<0.5 

<.5 <.5 

6 10/27/02 

02/13/03 03/19/03 03/19/03* 

08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 

0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 

08/31/03 

0150 

1800 

1730 

1731 

0700 

1140 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 

1450 

1451 

0845 

0000 

0320 

10/24/02 

10/24/02 

10/27/02 

02/14/03 

03/20/03 

0250 

0251 

1740 

1845 

0520 

<.5 

<.5 

<.5 

<.5 

<.5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.05 

<.5 

<.5 

11 08/28/03 1930 08/29/03 0400 E.04 <5 <5 E.04 E.05 E.04 14 10/24/02 

10/25/02** 10/27/02 

1930

1200 

1000 

10/25/02 

10/28/02 

--

0315 

1700 

--

<.5 

<.5 

<.5 

E.11 

<5 

<5 

E.33 

<5 

<5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

3-Methyl-1Hindole 

(skatol) 

83-34-1 

4-Cumylphenol 

599-64-4 

4-Nonylphenol 

104-40-5 

4-Octylphenol 

1806-26-4 

4-Tertoctylphenol 

140-66-9 

5-Methyl1H-benzotriazole 

136-85-6 

p

9

2 06/29/03 

08/30/03 08/31/03 

1800 

1100

0845 

07/01/03 

08/30/03 08/31/03 

0300 

2330 1345 

<1 

<1 <1 

<1 

<1 <1 

<5 

<5 <5 

<1 

<1 <1 

<1 

E.20

E.10 

<2 

<2 <2 

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 

0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 

08/31/03 

0150 

1800 

1730 

1731 

0700 

1140 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

E.54 

E2.7 

E.77 

E.77 

E.70 

E.30 

<1 

<1 

<1 

<1 

<1 

<1 

E.12 

<1 

E.19 

E.16 

E.30 

<1 

<2 

<2 

E.42 

E.45 

<2 

<2 

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 

1450 

1451 

0845 

0000 

0320 

10/24/02 

10/24/02 

10/27/02 

02/14/03 

03/20/03 

0250 

0251 

1740 

1845 

0520 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<1 

<5 

<5 

<5 

<5 

<5 

<1 

<1 

<1 

<1 

<1 

E.13 

E.12 

E.12 

<1 

E.26 

<2 

<2 

<2 

<2 

E.80 

11 08/28/03 1930 08/29/03 0400 E.04 <1 E1.6 <1 E.50 <2 14 10/24/02 

10/25/02** 10/27/02 

1930

1200 

1000 

10/25/02

10/28/02 

--

0315 

1700 

--

<1 

<1 

<1 

<1 

<1 

<1 

<5 

<5 

E.63

<1 

<1 

<1 

E.14 

<1 

E.17

<2 

<2 

<2 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Anthracene 

120-12-7 

Anthraquinone 

84-65-1 

Atrazine 

1912-24-9 

Benzo[a]­

pyrene 

50-32-8 

Benzophenone 

119-61-9 

Bis(2­

ethylhexyl)­

phthalate 

117-81-7 

p

8

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 

0845 

07/01/03 

08/30/03 

08/31/03 

0300 

2330 

1345 

<0.5 

E.02 

E.02 

E0.20 

E.24 

E.10 

--

--

--

<0.5 

E.08 

E.08 

E0.14 

E.12 

E.06 

--

--

--

6 10/27/02 

02/13/03 03/19/03 03/19/03*

08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 

0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 

08/31/03 

0150 

1800 

1730 

1731 

0700 

1140 

E.06 

E.17 

<.5 

<.5 

E.10 

E.02 

E.35 

1.1 

.73 

.82 

.77 

E.16 

E0.05 

<.5 

E.07 

E.08 

--

--

E.34 

1.2 

E.17 

E.15 

.81 

E.21 

E.14 

E.20 

E.14 

E.16 

E.06 

E.03 

<0.5 

<.5 

E.44 

E1.8 

--

--

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 

1450 

1451 

0845 

0000 

0320 

10/24/02 

10/24/02 

10/27/02 

02/14/03 

03/20/03 

0250 

0251 

1740 

1845 

0520 

E.10 

E.09 

E.24 

E.17 

E.08 

.52 

.51 

E.48 

.82 

.75 

<.5 

<.5 

<.5 

<.5 

<.5 

E.33 

E.28 

E.65 

.75 

E.29 

E.06 

E.06 

E.05 

E.10 

E.11 

<.5 

E1.1 

<.5 

<.5 

E17 

11 08/28/03 1930 08/29/03 0400 E.29 .99 -- 1.9 E.06 -- 14 10/24/02 

10/25/02**10/27/02

1930 

1200 

1000 

10/25/02 

10/28/02 

--

0315 

1700 

--

<.5 

<.5 

<.5 

E.18 

<.5 

E.19 

E.04 

<.5 

E.02 

E.10 

<.5 

E.13 

E.15 

<.5 

E.08 

<.5 

E2.5 

<.5 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

Site Sample Sample Sample Sample 

number start start end end BHA Caffeine Camphor Carbaryl Carbazole Chlorpyrifos Ch

(fig. 1) date time date time 25013-16-5 58-08-2 76-22-2 63-25-2 86-74-8 2921-88-2 5

2	 06/29/03 1800 07/01/03 0300 <5 E0.08 <0.5 <1 E0.04 <0.5 

08/30/03 1100 08/30/03 2330 <5 E.13 <.5 <1 E.07 <.5 08/31/03 0845 08/31/03 1345 <5 E.04 <.5 E.2 E.02 <.5 

6	 10/27/02 0900 10/28/02 0150 <5 .59 <.5 <1 E.17 <.5 

02/13/03 1030 02/14/03 1800 <5 .68 <.5 <1 E.48 <.5 E03/19/03 1505 03/19/03 1730 <5 .64 <.5 <1 E.20 <.5 03/19/03* 1506 03/19/03 1731 <5 .80 <.5 <1 E.23 <.5 08/28/03 1600 08/29/03 0700 <5 E.48 <.5 <1 E.15 <.5 08/31/03 0725 08/31/03 1140 <5 E.09 <.5 E.2 E.03 <.5 

9	 10/23/02 1450 10/24/02 0250 <5 E.38 <.5 <1 <.5 <.5 

10/23/02* 1451 10/24/02 0251 <5 .50 <.5 <1 E.19 <.5 10/27/02 0845 10/27/02 1740 <5 E.39 <.5 <1 E.33 <.5 02/14/03 0000 02/14/03 1845 <5 .75 <.5 <1 E.48 <.5 03/20/03 0320 03/20/03 0520 <5 .71 <.5 <1 E.21 <.5 

11 08/28/03 1930 08/29/03 0400 <5 .82 <.5 <1 E.32 <.5 14 10/24/02 1930 10/25/02 0315 <5 .70 <.5 <1 E.07 <.5 

10/25/02** 1200 -- -- <5 <.5 <.5 <1 <.5 <.5 10/27/02 1000 10/28/02 1700 <5 .73 <.5 <1 E.08 <.5 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Diazinon 

333-41-5 

Dichlorvos 

62-73-7 

Diethylphthalate 

84-66-2 

Dlimonene 

5989-27-5 

Equilenin 

517-09-9 

Estrone 

53-16-7 

Fluo

2

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 

0845 

07/01/03 

08/30/03 

08/31/03 

0300 

2330 

1345 

<0.5 

<.5 

E.1 

<1 

<1 

<1 

--

--

--

<0.5 

<.5 

<.5 

<5 

<5 

<5 

<5 

<5 

<5 

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 

0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 

08/31/03 

0150 

1800 

1730 

1731 

0700 

1140 

E.04 

<.5 

<.5 

<.5 <.5 

E.07 

E.13 

<1 

<1 

<1 

E.30 

E.20 

<0.5 

<.5 

E.31 

E.33 

--

--

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 

1450 

1451 

0845 

0000 

0320 

10/24/02 

10/24/02 

10/27/02 

02/14/03 

03/20/03 

0250 

0251

1740 

1845 

0520 

<.5 

E.03 

<.5 

<.5 

E.06 

<1 

<1 

<1 

<1 

<1 

<.5 

E.34 

<.5 

<.5 

E.48 

<.5 

<.5 

<.5 

<.5 

<.5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

<5 

11 08/28/03 1930 08/29/03 0400 <.5 <1 -- <.5 <5 <5 14 10/24/02 

10/25/02** 10/27/02 

1930 

1200 

1000 

10/25/02 

10/28/02 

--

0315 

1700 

--

E.03 

<.5 

E.03 

<1 

<1 

<1 

2.2 

<.5 

2.7 

<.5 

<.5 

<.5 

E.07 

<5 

<5 

E.16 

<5 

<5 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

IsopropylSite Sample Sample Sample Sample benzene 

number start start end end Indole Isoborneol Isophorone (cumene) Isoquinoline Menthol M

(fig. 1) date time date time 120-72-9 124-76-5 78-59-1 98-82-8 119-65-3 89-78-1 57

2	 06/29/03 1800 07/01/03 0300 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 

08/30/03 1100 08/30/03 2330 <.5 <.5 E.05 <.5 <.5 <.5 08/31/03 0845 08/31/03 1345 <.5 <.5 <.5 <.5 <.5 <.5 

6	 10/27/02 0900 10/28/02 0150 <.5 <.5 <.5 <.5 <.5 E.09 

02/13/03 1030 02/14/03 1800 E.09 <.5 <.5 <.5 E.16 <.5 03/19/03 1505 03/19/03 1730 <.5 <.5 <.5 <.5 <.5 <.5 03/19/03* 1506 03/19/03 1731 <.5 <.5 <.5 <.5 E.06 <.5 08/28/03 1600 08/29/03 0700 <.5 <.5 <.5 <.5 <.5 <.5 08/31/03 0725 08/31/03 1140 <.5 <.5 <.5 <.5 <.5 <.5 

9	 10/23/02 1450 10/24/02 0250 <.5 <.5 <.5 <.5 <.5 <.5 

10/23/02* 1451 10/24/02 0251 <.5 <.5 <.5 <.5 E.06 <.5 10/27/02 0845 10/27/02 1740 <.5 <.5 <.5 <.5 <.5 <.5 02/14/03 0000 02/14/03 1845 <.5 <.5 <.5 <.5 <.5 <.5 03/20/03 0320 03/20/03 0520 <.5 <.5 <.5 <.5 E.14 <.5 

11 08/28/03 1930 08/29/03 0400 <.5 <.5 <.5 <.5 <.5 <.5 14 10/24/02 1930 10/25/02 0315 <.5 <.5 <.5 <.5 E.08 E.11 

10/25/02** 1200 -- -- <.5 <.5 <.5 <.5 <.5 <.5 10/27/02 1000 10/28/02 1700 <.5 <.5 <.5 <.5 <.5 E.12 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Metolachlor 

51218-45-2 

N,Ndiethyltoluamide 

(DEET) 

134-62-3 

Naphthalene 

91-20-3 

NP1EO 

27986-36-3 

NP2EO 

26027-38-2 

OP1EO 

2315-67-5 

23

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 0845 

07/01/03 

08/30/03 08/31/03 

0300 

2330 1345 

<0.5 

<.5 <.5 

E0.23 

E.22 E.14 

<0.5 

<.5 <.5 

--

----

<5 

<5 <5 

<1 

<1 <1 

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 1505 

1506 

1600 

0725 

10/28/02 

02/14/03 03/19/03 

03/19/03 

08/29/03 

08/31/03 

0150 

1800 1730 

1731 

0700 

1140 

E.03 

E.08 E.06 

E.06

E.03 

<.5 

E.15 

E.15 E.20 

E.22 

E.27 

E.08 

<.5 

<.5 <.5 

E.05 

<.5 

<.5 

E0.52 

E2.0 

E.85 

E.97 

--

--

E1.5 

E3.3 

E2.8 

E3.5 

<5 

<5 

<1 

<1 

<1 

E.37 

<1 

<1 

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 

1450 

1451 

0845 

0000 

0320 

10/24/02 

10/24/02 

10/27/02 

02/14/03 

03/20/03 

0250 

0251 

1740 

1845

0520 

E.02 

E.02 

<.5 

<.5 

<.5 

.81 

.73 

E.60 

.51 

.54 

<.5 

<.5 

E.12 

E.11 

<.5 

<5 

<5 

<5 

<5 

<5 

E1.4 

<5 

<5 

<5 

<5 

<1 

<1 

<1 

<1 

<1 

11 08/28/03 1930 08/29/03 0400 <.5 2.3 E.06 -- <5 <1 14 10/24/02 

10/25/02** 10/27/02 

1930 

1200 

1000 

10/25/02 

10/28/02 

--

0315 

1700 

--

E.03 

<.5 

E.03 

1.2 

<.5 

1.2 

<.5 

<.5 

<.5 

E.55 

<5 

<5 

E2.6 

<5 

E1 

<1 

<1 

<1 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

PentaSite Sample Sample Sample Sample chloro- 

number start start end end phenol Phenanthrene Phenol Prometon Pyrene Sitosterol Stig

(fig. 1) date time date time 87-86-5 85-01-8 108-95-2 1610-18-0 129-00-0 83-46-5 19

2	 06/29/03 1800 07/01/03 0300 <2 E0.07 <0.5 E0.18 E0.09 <2 

08/30/03 1100 08/30/03 2330 E.60 E.06 E.26 E.06 E.13 E1.0 08/31/03 0845 08/31/03 1345 E.50 E.08 <.5 <.5 E.15 E1.1 

6	 10/27/02 0900 10/28/02 0150 E.05 E.29 E.50 <.5 .50 E1.7 

02/13/03 1030 02/14/03 1800 <2 1.6 <.5 <.5 1.9 E8.1 03/19/03 1505 03/19/03 1730 <2 E.25 <.5 <.5 E.39 2.5 03/19/03* 1506 03/19/03 1731 E.12 E.24 <.5 <.5 E.38 <2 08/28/03 1600 08/29/03 0700 E.50 .59 <.5 E.07 1.3 E.80 08/31/03 0725 08/31/03 1140 E.50 E.16 <.5 <.5 E.33 E1.0 

9	 10/23/02 1450 10/24/02 0250 E.08 E.36 <.5 <.5 .50 <2 

10/23/02* 1451 10/24/02 0251 E.08 E.30 <.5 <.5 E.44 E1.3 10/27/02 0845 10/27/02 1740 E.08 E1.0 E.49 <.5 E1.1 E1.4 02/14/03 0000 02/14/03 1845 <2 1.2 <.5 <.5 1.4 E6.9 03/20/03 0320 03/20/03 0520 E.26 E.40 <.5 <.5 .59 <2 

11 08/28/03 1930 08/29/03 0400 E.80 1.5 <.5 E.14 2.9 4.8 14 10/24/02 1930 10/25/02 0315 E.07 E.08 <.5 <.5 E.12 E1.9 

10/25/02** 1200 -- -- <2 <.5 <.5 <.5 <.5 <2 10/27/02 1000 10/28/02 1700 E.07 E.11 E.43 E.06 E.18 E1.6 
Table 7. Concentrations of selected organic wastewater compounds in stormwater samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; all chemical concentrations in units of micrograms per liter in unfiltered samples; AHTN, acetyl hexamethyl tethydroxyanisole; NP1EO, nonylphenol monoethoxylate; NP2EO, nonylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; --, no data; E, estimated

blank] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Tribromomethane 

(bromoform) 

75-25-2 

Tributyl 

phosphate 

126-73-8 

Triclosan 

3380-34-5 

Triethyl 

citrate 

(ethyl 

citrate) 

77-93-0 

Triphenyl 

phosphate 

115-86-6 

Tris (2­

butoxyethyl)- 

phosphate 

78-51-3 

T

chl

ph

1

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 

0845 

07/01/03 

08/30/03 

08/31/03 

0300 

2330 

1345 

<0.5 

<.5 

<.5 

E0.16 

E.16 

<.5 

<1 

E.05

<1 

<0.5 

<.5 

<.5 

E0.06 

E.02 

<.5 

<0.5 

E.30 

E.23 

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 

0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 

08/31/03 

0150 

1800 

1730 

1731 

0700 

1140 

<.5 

<.5 

<.5 

<.5 

<.5 

<.5 

E.09 

<.5 

E.08 

E.09 

E.06 

<.5 

E.27 

E.51 

E.20 

E.23 

E.08 

<1 

E.07 

E.15 

E.17 

E.17

E.03 

<.5 

<.5 

<.5 

<.5 

<.5 

E.03 

E.01 

1.0 

E1.8 

1.6 

E1.7 

.68 

E.20 

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 

1450 

1451 

0845 

0000

0320

10/24/02 

10/24/02 

10/27/02 

02/14/03 

03/20/03 

0250 

0251 

1740 

1845 

0520 

<.5 

<.5 

<.5 

<.5 

<.5 

E.06 

E.08 

E.06 

E.17 

E.10 

<1 

<1 

<1 

<1 

<1 

<.5 

<.5 

<.5 

<.5 

<.5 

E.09 

E.08 

E.09 

E.15 

E.06 

E.84 

E.75 

E.64 

E2.7 

1.0 

11 08/28/03 1930 08/29/03 0400 <.5 <.5 E.30 <.5 E.02 .67 14 10/24/02 

10/25/02** 10/27/02 

1930 

1200

1000 

10/25/02

10/28/02 

--

0315 

1700 

--

<.5 

<.5 

<.5 

E.10 

<.5 

E.09 

E.26 

<1 

E.20 

E.06 

<.5 

<.5 

<.5 

<.5 

<.5 

1.1 

<.5 

1.2 
Table 8. Concentrations of selected pharmaceutical compounds in stormwater samples. 

[Numbers below compounds are Chemical Abstract Services (CAS) registry numbers; all concentrations in micrograms per liter in filtered samples; <, less than; E, estimated; MRL-ND, no quantifiable ping limit not quantified; --, no data; *, replicate sample; **, field equipment blank sample] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

1,7-Dimethylxanthine 

611-59-6 

Acetaminophen 

103-90-2 

Amoxicillin 

61336-70-7 

Azithromycin 

83905-01-5 

Caffeine 

58-08-2 

Carbam

298

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 

0845 

07/01/03 

08/30/03

08/31/03 

0300 

2330 

1345 

<0.018 

<.018 

<.018 

E0.005 

.008 

.024 

MRL-ND 

--

--

MRL-ND 

MRL-ND

MRL-ND 

<0.014 

.074 

.030 

E0.

<.

.

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 08/31/03

0150 

1800 

1730 

1731 

0700 1140 

.300 

<.018 

.280 

.120 

<.018 <.018 

.330 

.034 

.050 

.067 

.058 .050 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

----

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND 

.540 

.590 

.450 

.520 

.190 .058 

.

.

.

<.

<.<.

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 06/12/03 06/12/03* 06/09/04 

1450 

1451 

0845 0000 0320 

2025 

2026 

1130 

10/24/02 

10/24/02 

10/27/02 02/14/03 03/20/03 

06/13/03 

06/13/03 

06/10/04 

0250 

0251 

1740 1845 0520 

1155 

1156 

1400

<.018 

<.018 

<.018 <.018 <.018 

.200 

.190 

1.30 

.073 

.084

.091 .059 .068 

1.20 

1.20 

.130 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

.530 

.580 

.440 .620 .490 

.320 

.390 

.400 

<.

<.

<.<.<.

<.

<.

<.

11 06/12/03 

08/28/03 06/09/04 

2030 

1930 1000 

06/13/03 

08/29/03 06/10/04 

1200 

0400 1400 

<.018 

.060 

1.30 

.200 

.110 

.640 

MRL-ND 

MRL-ND 

--

MRL-ND 

MRL-ND 

MRL-ND 

.140 

.270 

.710 

<.

<.

<.

14 10/05/00 

10/24/02 10/25/02** 

1445 

1930 

1200 

10/05/00 

10/25/02 

--

1900 

0315 

--

E.170 

.450 

<.018 

.346 

.130 

<.009 

--

MRL-ND 

MRL-ND 

--

MRL-ND 

MRL-ND 

.713 

.680 

<.014 

.

<.
Table 8. Concentrations of selected pharmaceutical compounds in stormwater samples.—Continued 

[Numbers below compounds are Chemical Abstract Services (CAS) registry numbers; all concentrations in micrograms per liter in filtered samples; <, less than; E, estimated; MRL-ND, no quantifiable ping limit not quantified; --, no data; *, replicate sample; **, field equipment blank sample] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Cimetidine 

51481-61-9 

Clarithromycin 

81103-11-9 

Codeine 

76-57-3 

Cotinine 

486-56-6 

Dehydronifedipine 

67035-22-7 

Digox

1672

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 0845 

07/01/03 

08/30/03 08/31/03 

0300 

2330 1345 

<0.007 

<.007 <.007 

MRL-ND 

----

<0.024 

<.024 <.024 

0.023 

.034 .007 

<0.01 

<.01 <.01 

<

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 1505 

1506 

1600 

0725 

10/28/02 

02/14/03 03/19/03 

03/19/03 

08/29/03 

08/31/03 

0150 

1800 1730 

1731 

0700 

1140 

.013 

.024 .024 

<.007 

<.007 

<.007 

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

--

--

.047 

.051 .037 

.009 

<.024 

<.024 

.054 

.097 .110 

.120 

.073 

E.006 

<.01 

<.01 <.01 

<.01 

<.01 

<.01 

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 06/12/03 06/12/03* 06/09/04 

1450 

1451 

0845 0000 0320 2025 

2026 

1130 

10/24/02 

10/24/02 

10/27/02 02/14/03 03/20/03 06/13/03 

06/13/03 

06/10/04

0250 

0251 

1740 1845 0520 1155 

1156 

1400 

<.007 

<.007 

<.007 <.007 <.007 <.007 

<.007 

<.007

MRL-ND 

MRL-ND 

MRL-ND MRL-ND MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

<.024 

<.024 

<.024 <.024 

E.009 

<.024 

<.024 

<.024 

.071 

.075 

.040 .180 .130 .031 

.028 

.048 

<.01 

<.01 

<.01 <.01 <.01 <.01 

<.01 

<.01 

11 06/12/03 

08/28/03 06/09/04 

2030 

1930 

1000 

06/13/03 

08/29/03

06/10/04 

1200 

0400 

1400 

<.007 

<.007 

<.007 

MRL-ND 

MRL-ND 

--

<.024 

<.024 

<.024 

.034 

.100 

.053 

<.01 

<.01 

<.01 

14 10/05/00 

10/24/02 10/25/02** 

1445 

1930 

1200 

10/05/00 

10/25/02 

--

1900 

0315 

--

<.007 

.011 

<.007 

--

MRL-ND 

MRL-ND 

<.024 

.031 

<.024 

.015 

.092 

<.023 

<.01 

.01

<.01 
Table 8. Concentrations of selected pharmaceutical compounds in stormwater samples.—Continued 

[Numbers below compounds are Chemical Abstract Services (CAS) registry numbers; all concentrations in micrograms per liter in filtered samples; <, less than; E, estimated; MRL-ND, no quantifiable ping limit not quantified; --, no data; *, replicate sample; **, field equipment blank sample] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Diltiazem 

42399-41-7 

Diphenhydramine 

58-73-1 

Enalaprilat 

76420-72-9 

Erythromycin 

114-07-8 

Fluoxetine 

54910-89-3 

Furos

54

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 0845 

07/01/03 

08/30/03 08/31/03 

0300 

2330 1345 

<0.012 

<.012 <.012 

<0.015 

<.015 <.015 

<0.15 

----

MRL-ND 

MRL-ND MRL-ND 

<0.018 

<.018 <.018 

<

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 08/31/03 

0150 

1800 

1730 

1731 

0700 1140 

.013 

<.012 

<.012 

<.012 

<.012 <.012 

<.015 

<.015 

<.015 

<.015 

<.015 <.015 

<.15 

<.15 

<.15 

<.15 

----

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND 

<.018 

E.017 

.016 

.050 

<.018 <.018 

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 06/12/03 06/12/03* 06/09/04 

1450 

1451 

0845 0000 

0320 

2025 

2026 

1130 

10/24/02 

10/24/02 

10/27/02 02/14/03 

03/20/03 

06/13/03

06/13/03 

06/10/04 

0250 

0251 

1740 1845 

0520 

1155 

1156 

1400 

<.012 

<.012 

<.012 <.012 

<.012 

<.012 

<.012 

<.012 

<.015 

<.015 

<.015 <.015 

<.015 

<.015 

<.015 

<.015 

<.15 

<.15 

<.15 <.15 

<.15 

<.15 

<.15 

--

MRL-ND 

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

<.018 

<.018 

<.018 <.018 

.050 

<.018 

<.018 

<.018 

11 06/12/03 

08/28/03 06/09/04 

2030 

1930 1000 

06/13/03 

08/29/0306/10/04 

1200 

0400 1400 

<.012 

<.012 <.012 

<.015 

<.015 <.015 

<.15 

----

MRL-ND 

MRL-ND MRL-ND 

<.018 

<.018 <.018 

14 10/05/00 

10/24/02 10/25/02** 

1445 

1930 

1200 

10/05/00 

10/25/02 

--

1900 

0315 

--

<.012 

<.012 

<.012 

<.015 

<.015 

E.004 

<.15 

<.15 

<.15 

--

MRL-ND 

MRL-ND 

<.018 

<.018 

<.018 
Table 8. Concentrations of selected pharmaceutical compounds in stormwater samples.—Continued 

[Numbers below compounds are Chemical Abstract Services (CAS) registry numbers; all concentrations in micrograms per liter in filtered samples; <, less than; E, estimated; MRL-ND, no quantifiable ping limit not quantified; --, no data; *, replicate sample; **, field equipment blank sample] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Ibuprofen 

15687-27-1 

Lisinopril 

83915-83-7 

Metformin 

657-24-9 

Miconazole 

22916-47-8 

Naproxen 

22204-53-1 

Paroxetine 

6186

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 0845 

07/01/03 

08/30/03 08/31/03 

0300 

2330 1345 

<0.018 

<.018 <.018 

MRL-ND 

----

<0.003 

<.003 <.003 

<0.018 

<.018 <.018 

MRL-ND 

----

<

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 1505 

1506 

1600 0725 

10/28/02 

02/14/0303/19/03 

03/19/03 

08/29/03 08/31/03

0150 

1800 1730 

1731 

0700 1140 

<.018 

<.018 <.018 

<.018 

<.018 <.018 

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

----

.049 

<.003 <.003 

<.003 

<.003 <.003 

<.018 

<.018 <.018 

<.018 

<.018 <.018 

MRL-ND 

MRL-ND MRL-ND 

MRL-ND 

----

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 06/12/03 06/12/03* 06/09/04 

1450 

1451 

0845 0000 0320 2025 

2026 

1130 

10/24/02 

10/24/02 

10/27/02 02/14/03 03/20/03 06/13/03 

06/13/03 

06/10/04 

0250 

0251 

1740 1845 0520 1155 

1156 

1400 

<.018 

<.018 

<.018 <.018 <.018 <.018 

<.018 

<.018 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND MRL-ND MRL-ND 

MRL-ND

MRL-ND 

<.003 

<.003 

<.003 <.003 <.003 <.003 

<.003 

<.003 

<.018 

<.018 

<.018 <.018 <.018 <.018

<.018 

<.018 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

11 06/12/03 

08/28/03 06/09/04 

2030 

1930 

1000 

06/13/03 

08/29/03

06/10/04 

1200 

0400 

1400 

<.018 

<.018 

<.018 

MRL-ND 

MRL-ND 

--

<.003 

<.003 

<.003 

<.018 

<.018 

<.018 

MRL-ND 

MRL-ND 

--

14 10/05/00 

10/24/02 10/25/02** 

1445 

1930 

1200 

10/05/00 

10/25/02 

--

1900 

0315 

--

<.018 

<.018 

<.018 

--

MRL-ND 

MRL-ND 

<.003 

.062 

<.003 

--

<.018 

<.018 

--

MRL-ND 

MRL-ND 
Table 8. Concentrations of selected pharmaceutical compounds in stormwater samples.—Continued 

[Numbers below compounds are Chemical Abstract Services (CAS) registry numbers; all concentrations in micrograms per liter in filtered samples; <, less than; E, estimated; MRL-ND, no quantifiable ping limit not quantified; --, no data; *, replicate sample; **, field equipment blank sample] 

Site 

number 

(fig. 1) 

Sample 

start 

date 

Sample 

start 

time 

Sample 

end 

date 

Sample 

end 

time 

Salbutamol 

(Albuterol) 

18559-94-9 

Sulfamethoxazole 

723-46-6 

Thiabendazole 

148-79-8 

Trimethoprim 

738-70-5 

Urobilin 

1856-98-0 

Wa

81

2 06/29/03 

08/30/03 08/31/03 

1800 

1100 0845 

07/01/03 

08/30/03 08/31/03 

0300 

2330 1345 

<0.029 

<.029 <.029 

<0.023 

<.023 <.023 

<0.011 

<.011 <.011 

<0.014 

<.014 <.014 

MRL-ND 

----

<

6 10/27/02 

02/13/03 03/19/03 03/19/03* 08/28/03 08/31/03 

0900 

1030 

1505 

1506 

1600 0725 

10/28/02 

02/14/03 

03/19/03 

03/19/03 

08/29/03 08/31/03 

0150 

1800 

1730 

1731 

0700 1140 

E.008 

<.029 

<.029 

<.029 

<.029 <.029 

.093 

.039 

<.023 

<.023 

<.023 <.023 

<.011 

<.011 

<.011 

<.011 

<.011 <.011 

.031 

.049 

.012 

<.014 

<.014 <.014 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

----

9 10/23/02 

10/23/02* 10/27/02 02/14/03 03/20/03 06/12/0306/12/03* 06/09/04 

1450 

1451 

0845 0000 0320 2025 

2026 

1130 

10/24/02 

10/24/02

10/27/02 02/14/03 03/20/03 06/13/03 

06/13/03 

06/10/04 

0250 

0251 

1740 1845 0520 1155 

1156 

1400 

<.029 

<.029 

<.029 <.029 <.029 <.029 

<.029 

<.029 

<.023 

<.023 

<.023 <.023 <.023 <.023 

<.023 

<.023 

<.011 

<.011 

<.011 <.011 <.011 <.011 

<.011 

<.011 

<.014 

<.014 

<.014 <.014 <.014 <.014 

E.001 

<.014 

MRL-ND 

MRL-ND 

MRL-ND MRL-ND MRL-ND MRL-ND 

MRL-ND 

MRL-ND 

11 06/12/03 

08/28/03 06/09/04 

2030 

1930 

1000 

06/13/03 

08/29/03 

06/10/04 

1200 

0400 

1400 

<.029 

<.029 

<.029 

<.023 

<.023 

<.023 

<.011 

<.011 

<.011 

<.014 

<.014 

<.014 

MRL-ND 

MRL-ND 

--

14 10/05/00 

10/24/02 10/25/02** 

1445 

1930 

1200 

10/05/00 

10/25/02 

--

1900 

0315 

--

<.029 

E.005 

<.029 

<.023 

.074 

E.004 

<.011 

<.011 

<.011 

<.014 

E.022 

<.014 

MRL-ND 

MRL-ND 

MRL-ND 
Table 9. Nutrients, bacteria, and selected chemical concentrations in water-column samples from selected reaches of Brush Creek. 

[m, meters; +, plus; N, nitrogen; mg/L, milligrams per liter; NO2 + NO3, nitrite plus nitrate; μg/L, micrograms per liter; col/100 mL, colonies per 100 milliliters; E, estimated; *, replicate sample; <, less 

Ammonia + Ammonia, NO2 + NO3, Nitrite, 

Site Mean Distance, organic N, as N, as N, as N, Nitrogen, p

number Sample Sample depth from dam total dissolved dissolved dissolved total 

(fig. 1) date time (m) (m) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) 

10 09/25/02 0945 0.55 10 0.768 0.050 0.382 0.048 1.99 

09/25/02* 0946 .55 10 .809 <.04 .373 .046 4.40 09/25/02 1030 1.50 10 1.07 .131 .356 .047 3.24 09/25/02 1200 .48 250 .718 .119 .370 .047 4.95 09/25/02 1230 1.00 250 .760 .121 .377 .047 5.68 09/25/02 1330 .55 750 .680 <.04 .339 .056 5.06 09/25/02 1400 1.25 750 .764 .070 .383 .050 4.96 

12 09/06/02 0930 .75 5 1.71 <.04 <.05 E.004 5.89 

09/06/02 1030 1.75 5 1.64 .271 E.023 E.007 17.9 09/06/02 1045 2.50 5 2.25 .516 <.05 E.006 7.73 09/06/02 1215 .75 60 2.25 <.04 <.05 <.008 7.73 09/06/02 1245 2.50 60 1.87 .424 <.05 E.005 8.84 09/06/02 1315 4.00 60 2.75 1.61 <.05 <.008 3.26 09/06/02 1500 .75 200 2.32 <.04 <.05 <.008 5.95 09/06/02 1530 2.15 200 1.78 .217 <.05 <.008 4.16 09/06/02 1600 3.00 200 1.94 .718 <.05 <.008 3.24 05/28/03 0945 .75 5 1.71 .023 <.06 <.008 5.54 05/28/03 1015 2.75 5 2.35 .677 <.06 <.008 4.16 05/28/03 1045 .75 60 2.22 .182 <.06 <.008 3.24 05/28/03 1115 2.50 60 2.70 .336 <.06 <.008 5.54 08/27/03 1000 .50 5 1.78 <.04 <.06 <.008 2.99 08/27/03 1015 2.25 5 1.96 .474 <.06 <.008 3.53 08/27/03 1030 3.75 5 2.30 .789 <.06 <.008 4.15 08/27/03 1200 .50 60 1.77 .044 <.06 <.008 3.25 08/27/03 1215 2.63 60 2.30 1.03 <.06 <.008 4.54 08/27/03 1230 4.50 60 4.34 2.69 <.06 <.008 4.01 09/05/03 1000 .50 100 1.21 .218 <3.13 .136 3.04 09/05/03 1015 1.63 100 1.52 .293 <2.99 .171 4.11 09/05/03 1030 4.50 100 1.72 .786 <2.34 .142 1.91 
Table 9. Nutrients, bacteria, and selected chemical concentrations in water-column samples from selected reaches of Brush Creek.—Continued 

[m, meters; +, plus; N, nitrogen; mg/L, milligrams per liter; NO2 + NO3, nitrite plus nitrate; μg/L, micrograms per liter; col/100 mL, colonies per 100 milliliters; E, estimated; *, replicate sample; <, less 

Carbon 

Site Phosphorus, Escherichia Fecal Total organic, 

number Sample Sample total coli coliform coliform Chlorophyll a Chlorophyll b dissolved 

(fig. 1) date time (mg/L) (col/100 mL) (col/100 mL) (col/100 mL) (μg/L) (μg/L) (mg/L) 

10	 09/25/02 0945 0.107 -- -- -- E6.26 <0.1 5.54 

09/25/02* 0946 .111 -- -- -- -- -- 5.82 09/25/02 1030 .191 -- -- -- -- -- 7.41 09/25/02 1200 .108 -- -- -- 5.47 <.1 5.45 09/25/02 1230 .118 -- -- -- -- -- 10.3 09/25/02 1330 .112 -- -- -- 9.63 1.49 5.85 

09/25/02 1400 .117 -- -- -- -- -- 5.94 

12	 09/06/02 0930 .183 -- -- -- 49.0 9.48 8.50 

09/06/02 1030 .189 -- -- -- -- -- 7.61 09/06/02 1045 .278 -- -- -- -- -- 7.50 09/06/02 1215 .268 -- -- -- 86.0 16.9 7.66 09/06/02 1245 .228 -- -- -- -- -- 7.62 09/06/02 1315 .420 -- -- -- -- -- 7.36 09/06/02 1500 .284 -- -- -- E76.9 E8.13 7.43 09/06/02 1530 .208 -- -- -- -- -- 7.18 09/06/02 1600 .250 -- -- -- -- -- 6.85 05/28/03 0945 .188 10 -- >242,000 39.0 <.1 6.14 05/28/03 1015 .340 80 -- 242,000 -- -- 6.04 05/28/03 1045 .266 80 -- >242,000 54.3 <.1 6.52 05/28/03 1115 .308 30 -- >242,000 -- -- 5.87 08/27/03 1000 .266 2 6 3,500 -- -- 10.3 08/27/03 1015 .319 45 50 >4,800 -- -- 10.4 08/27/03 1030 .389 110 170 >4,800 -- -- 10.2 08/27/03 1200 .238 10 <10 >4,800 -- -- 10.2 08/27/03 1215 .415 850 1,100 3,500 -- -- 10.2 08/27/03 1230 .861 2,050 1,900 >4,800 -- -- 10.7 09/05/03 1000 .182 2 6 3,500 -- -- -- 09/05/03 1015 .242 45 50 >4,800 -- -- -- 09/05/03 1030 .303 110 170 >4,800 -- -- -- 
Table 10. Nutrients, bacteria, and selected chemical concentrations in bottom-sediment samples from selected reaches of Brush Creek. 

[m, meters; mg/kg, milligrams per kilogram; col/100 mL, colonies per 100 milliliters in pore water; --, no data; *, replicate sample] 

Site Mean Distance, pH Ammonia, Nitrate, Total Total Org

number Sample Sample depth from dam Percent Percent Percent (standard as nitrogen as nitrogen nitrogen phosphorus ma

(fig. 1) date time (m) (m) sand silt clay units) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (per

10 09/25/02 1030 1.75 10 36 46 18 7.9 121.5 0.9 3,552 824 12

09/25/02 1230 1.25 250 26 56 18 8.1 9.4 .1 2,978 765 809/25/02 1400 1.50 750 44 44 12 8.1 106.6 .4 1,841 810 603/12/03 1045 1.75 10 34 50 16 8.3 232.4 .3 2,482 798 703/12/03 1245 1.25 250 48 38 14 8.0 111.0 .3 2,090 879 7

12 09/06/02 1045 2.75 5 18 58 24 8.0 479.1 .7 3,684 1,056 9

09/06/02 1315 4.25 60 20 54 26 7.8 456.7 .6 3,680 1,146 1009/06/02 1600 3.25 200 18 58 24 8.2 477.7 3.5 3,515 1,109 805/28/03 1200 4.38 5 22 52 26 8.2 402.0 .7 3,835 1,111 1005/28/03 1230 4.12 60 20 54 26 8.1 290.9 .4 2,922 1,080 808/27/03 1315 4.12 30 20 54 26 8.2 452.7 .4 3,782 1,097 1008/27/03 1330 4.12 100 22 56 24 8.1 296.1 .4 2,509 1,016 709/05/03 1200 5.00 30 12 60 28 8.1 338.4 .6 2,546 1,017 609/05/03* 1201 5.00 30 14 60 26 8.1 329.4 .6 2,579 1,009 6

Site Escherichia Fecal Total 

number Sample Sample coli coliform coliform Chloride Boron Cadmium Copper Iron Lead Manganese Ni

(fig. 1) date time (col/100 mL) (col/100 mL) (col/100 mL) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg

10 09/25/02 1030 -- -- -- 42.1 0.82 0.76 13.7 8,245 26.7 191 

09/25/02 1230 -- -- -- 48.6 .79 .74 13.7 7,953 29.5 143 09/25/02 1400 -- -- -- 39.9 1.40 .69 13.8 8,468 24.0 174 103/12/03 1045 -- -- -- 103.0 1.63 .74 10.6 8,284 28.6 187 03/12/03 1245 -- -- -- 163.2 1.66 .71 10.1 7,787 26.8 177 

12 09/06/02 1045 -- -- -- 90.0 .86 .91 15.4 8,973 41.3 180 1

09/06/02 1315 -- -- -- 91.7 .79 .99 18.0 10,003 43.6 173 109/06/02 1600 -- -- -- 89.4 .97 .91 15.5 9,266 43.2 172 105/28/03 1200 30 -- 5,220 109.7 -- .94 16.8 8,912 45.3 171 105/28/03 1230 35 -- 6,360 135.1 1.48 1.01 17.1 9,439 41.7 188 108/27/03 1315 30 33 390 61.1 1.54 1.01 17.3 9,169 45.4 163 108/27/03 1330 30 33 475 82.3 1.40 .99 16.1 9,274 41.3 194 109/05/03 1200 -- -- -- 68.2 1.14 .91 14.2 9,552 41.4 190 109/05/03* 1201 -- -- -- 58.7 .82 .94 14.4 9,634 41.2 190 1
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek. 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

3,4- 

Site Distance, 1,4-Dichloro- 17-α-Ethynyl 17-β- 1-Methyl- 2,6-Dimethyl- 2-Methyl- Dichlorophenyl- 

number Sample Sample Depth from dam benzene estradiol Estradiol naphthalene naphthalene naphthalene isocyanate 

(fig. 1) date time (m) (m) 106-46-7 57-63-6 50-28-2 90-12-0 581-42-0 91-57-6 102-36-3 

Water-column samples (micrograms per liter in unfiltered samples) 

10	 09/25/02 0945 0.55 10 <0.5 <5 <5 <0.5 <0.5 <0.5 E0.05 

09/25/02* 0946 .55 10 <.5 <5 <5 <.5 <.5 <.5 E.05 09/25/02 1030 1.50 10 <.5 <5 <5 <.5 <.5 <.5 E.06 09/25/02 1200 .48 250 <.5 <5 <5 <.5 <.5 <.5 E.06 09/25/02 1230 1.00 250 <.5 <5 <5 <.5 <.5 <.5 E.06 09/25/02 1330 .55 750 <.5 E.1 E.48 <.5 <.5 <.5 E.07 09/25/02 1400 1.25 750 <.5 <5 <5 <.5 <.5 <.5 E.06 

12	 09/06/02 0930 .75 5 E.08 <5 <5 <.5 <.5 <.5 E.14 

09/06/02 1030 1.75 5 E.07 <5 <5 <.5 <.5 <.5 E.12 09/06/02 1045 2.50 5 <.5 <5 <5 <.5 <.5 <.5 E.12 09/06/02 1215 .75 60 <.5 <5 <5 <.5 <.5 <.5 E.09 09/06/02 1245 2.50 60 E.09 <5 <5 <.5 <.5 <.5 E.15 09/06/02 1315 4.00 60 <.5 <5 <5 <.5 <.5 <.5 E.15 09/06/02 1500 .75 200 <.5 <5 <5 <.5 <.5 <.5 E.13 09/06/02 1530 2.15 200 E.09 <5 <5 <.5 <.5 <.5 E.14 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 E.10 <5 <5 <.5 <.5 <.5 .71 05/28/03 1015 2.75 5 E.14 <5 <5 <.5 <.5 <.5 .88 05/28/03 1045 .75 60 E.10 <5 <5 <.5 <.5 <.5 .67 05/28/03 1115 2.50 60 E.09 <5 <5 <.5 <.5 <.5 .54 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

1,4-Dichlorobenzene 

106-46-7 

17-αEthynyl 

estradiol 

57-63-6 

17-βEstradiol 

50-28-2 

1-Methylnaphthalene 

90-12-0 

2,6-Dimethylnaphthalene 

581-42-0 

2-Methylnaphthalene 

91-57-6 

3,4­

Dichlorophenylisocyanate 

102-36-3 

Bottom-sediment samples (micrograms per kilogram) 

10 09/25/02 

09/25/02 09/25/02  03/12/0303/12/03 

1030 

1230 1400 

 1045 

1245 

1.75

1.25 1.50 

1.75 

1.25 

10 

250 750 

10 

250 

E50 

<50 <50 

<50 

<50 

<250 <250 460 440 

<250 <250 340 260 <250 <250 290 250 

<250 <250 <50 74 

<250 <250 120 140 

400 

370 340 

<50 

180 

<100 

<100 <100 

<100 

<100 

11 02/25/03 

02/25/03 

1430 

1500 

1.50 

1.50 

25 

250 

<50 

<50 

<250 <250 <50 <50 

<250 <250 E31 97 

<50 

57 

<100 <100 

12 09/06/02 

09/06/02 09/06/02 05/28/0305/28/03

1045 13151600 1200 

1230 

2.75 4.253.25 4.38 

4.12 

5 

60 

200 

5 

60 

E500 E330 

E240 

E34 

E31 

<250 <250 1,000 850 <250 <250 810 790 

<250 <250 280 320 

<250 <250 E22 150 

<250 <250 E40 140 

950 

780 

375 

53 

80 

<100 

<100 

<100 

<100 

<100 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

4-TertStation Distance, 4-Cumyl­ 4-Nonyl­ 4-Octyl­ octyl­ 5-Methyl- Aceto- 

number Sample Sample Depth from dam phenol phenol phenol phenol 1H-benzo-triazole phenone AHTN 

(fig. 1) date time (m) (m) 599-64-4 104-40-5 1806-26-4 140-66-9 136-85-6 98-86-2 21145-77-7 

Water-column samples (micrograms per liter in unfiltered samples) 

10 09/25/02 0945 0.55 10 <1 <5 <1 <1 <2 <0.5 <0.5 

09/25/02* 0946 .55 10 <1 <5 <1 <1 <2 <.5 <.5 09/25/02 1030 1.50 10 <1 <5 <1 <1 <2 <.5 <.5 09/25/02 1200 .48 250 <1 <5 <1 <1 <2 <.5 <.5 09/25/02 1230 1.00 250 <1 <5 <1 <1 <2 <.5 <.5 09/25/02 1330 .55 750 <1 <5 <1 <1 <2 <.5 <.5 09/25/02 1400 1.25 750 <1 <5 <1 <1 <2 <.5 <.5 

12 09/06/02 0930 .75 5 <1 <5 <1 <1 <2 <.5 <.5 

09/06/02 1030 1.75 5 <1 <5 <1 <1 <2 <.5 <.5 09/06/02 1045 2.50 5 <1 <5 <1 <1 <2 <.5 E.05 09/06/02 1215 .75 60 <1 <5 <1 <1 <2 <.5 <.5 09/06/02 1245 2.50 60 <1 <5 <1 <1 <2 <.5 <.5 09/06/02 1315 4.00 60 <1 <5 <1 <1 <2 <.5 E.05 09/06/02 1500 .75 200 <1 <5 <1 <1 <2 <.5 <.5 09/06/02 1530 2.15 200 <1 <5 <1 <1 <2 <.5 <.5 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 <1 E7.1 <1 <1 <2 <.5 <.5 05/28/03 1015 2.75 5 <1 E6.1 <1 <1 <2 E.13 <.5 05/28/03 1045 .75 60 <1 <4.6 <1 <1 E.59 E.08 <.5 05/28/03 1115 2.50 60 <1 <2.5 <1 <1 <2 <.5 E.07 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

4-Cumylphenol 

599-64-4 

4-Nonylphenol 

104-40-5 

4-Octylphenol 

1806-26-4 

4-Tertoctylphenol 

140-66-9 

5-Methyl1H-benzo-triazole 

136-85-6 

Acetophenone 

98-86-2 

AHTN 

21145-77-7 

10 09/25/02 

09/25/02 

1030 

1230

1.75 

1.25 

10 

250 

<50 

120 

Bottom-sediment samples (micrograms per kilogram) 

E2,200 50 50 

E3,800 <50 <50 

--

--

E110 

E290 

530 

140 

09/25/02  03/12/0303/12/03 

1400 

 1045 

1245 

1.50 

1.75 

1.25 

750 

10 

250 

<50 

<50 

<50 

E3,700 <50 <50 

E520 <50 <50 

E400 <50 <50 

--

--

--

E510 

E25 

E1.57 

150 

E18 

E14 

11 02/25/03 

02/25/03

1430 

1500 

1.50 

1.50 

25 

250 

<50 

<50 

E1,200 <50 <50 

E1,200 <50 <50 

--

--

<50 

<50 

E35 

E26 

12 09/06/02 

09/06/02 

1045 

1315 

2.75 

4.25 

5 

60 

<50 

<50 

E29,000 310 400 

E54,000 620 730 

--

--

E1,600 

E1,030 

490 

920 

09/06/02 05/28/03 05/28/03 

1600 

1200 

1230 

3.25 

4.38 

4.12 

200 

5 

60 

<50 

<50 

<50 

E5,800 <50 <50 

E7,200 <50 <50 

E8,100 <50 <50 

--

--

--

E325 

E120 

E92 

320 

170 

180 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Bis(2­

Station Distance, Benzo[a]- Benzo- ethylhexyl)- Bisnumber Sample Sample Depth from dam Atrazine pyrene phenone phthalate phenol A Bromacil BHA 

(fig. 1) date time (m) (m) 1912-24-9 50-32-8 119-61-9 117-81-7 80-05-7 314-40-9 25013-16-5 

Water-column samples (micrograms per liter in unfiltered samples) 

10	 09/25/02 0945 0.55 10 <0.5 <0.5 <0.5 <0.5 <1 E0.05 <5 

09/25/02* 0946 .55 10 <.5 <.5 <.5 <.5 <1 E.03 <5 09/25/02 1030 1.50 10 <.5 E.06 <.5 <.5 E.10 E.06 <5 09/25/02 1200 .48 250 <.5 <.5 <.5 <.5 <1 <.5 <5 09/25/02 1230 1.00 250 E.01 <.5 <.5 <.5 E.10 E.05 <5 09/25/02 1330 .55 750 <.5 <.5 <.5 E18 E.12 E.09 <5 09/25/02 1400 1.25 750 <.5 E.11 <.5 E16 E.08 E.06 <5 

12	 09/06/02 0930 .75 5 E.02 <.5 <.5 E5.8 E.08 E.10 <5 

09/06/02 1030 1.75 5 <.5 <.5 E.05 <.5 <1 E.06 <5 09/06/02 1045 2.75 5 <.5 <.5 E.05 <.5 <1 E.07 <5 09/06/02 1215 .75 60 <.5 <.5 <.5 <.5 <1 E.10 <5 09/06/02 1245 2.50 60 E.02 <.5 <.5 <.5 E.1 E.06 <5 09/06/02 1315 4.00 60 <.5 <.5 <.5 <.5 <1 E.07 <5 09/06/02 1500 .75 200 E.02 <.5 <.5 <.5 E.09 E.06 <5 09/06/02 1530 2.15 200 E.01 <.5 <.5 <.5 E.1 E.06 <5 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 .52 .50 E.11 .58 E.16 <.5 <5 05/28/03 1015 2.50 5 .38 E.02 E.18 .41 E.25 <.5 <5 05/28/03 1045 .75 60 .31 E.01 E.11 .18 E.17 <.5 <5 05/28/03 1115 2.50 60 .27 .50 E.09 .33 E.14 <.5 <5 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m)

Atrazine 

1912-24-9 

Benzo[a]­

pyrene 

50-32-8 

Benzophenone 

119-61-9 

Bis(2­

ethylhexyl)­

phthalate 

117-81-7 

Bisphenol A 

80-05-7 

Bromacil 

314-40-9 

BHA 

25013-16-5 

10 09/25/02 

09/25/02 09/25/02  03/12/0303/12/03 

1030 

1230 1400 

 1045 

1245 

1.75 

1.25 1.50 

1.75 

1.25 

10 

250 750 

10 

250 

<100 

<100 <100 

<100 

<100 

Bottom-sediment samples (micrograms per kilogram) 

5,900 <50 14,000 240 

8,800 <50 8,400 440 9,700 <50 10,000 210 

3,000 <50 1,600 <100 

7,000 460 2,500 <100 

<100 

<100 

<100 

<100 

<100

--

--

--

--

--

11 02/25/03 

02/25/03 

1430 

1500 

1.50 

1.50 

25 

250 

<100 

<100 

2,500 

4,000 

<50 

<50 

3,000 

2,600 

E22 

E44

<100 

<100 

--

--

12 09/06/02 

09/06/02 09/06/02 05/28/03 05/28/03 

1045 

1315 

1600 

1200

1230 

2.75 

4.25 

3.25 

4.38 

4.12 

5 

60 

200 

5

60 

<100 

<100 

<100 

<100 

<100 

6,300 

9,800 

2,300 

1,800 

1,800 

<50 

<50 

<50 

<50 

<50 

5,200 

15,000 

3,100 

5,400 

4,600 

280 

380 

<100 

E80 

<100 

<100 

<100 

<100 

<100 

<100 

--

--

--

--

--
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station Distance, 

number Sample Sample Depth from dam Carbaryl Carbazole Chlorpyrifos Cholesterol Cotinine Diazinon Dichlorvos 

(fig. 1) date time (m) (m) 63-25-2 86-74-8 2921-88-2 57-88-5 486-56-6 333-41-5 62-73-7 

Water-column samples (micrograms per liter in unfiltered samples) 

10	 09/25/02 0945 0.55 10 <1 <0.5 <0.5 E1.7 <1 E0.05 E0.04 

09/25/02* 0946 .55 10 <1 <.5 <.5 E1.8 <1 E.06 <1 09/25/02 1030 1.50 10 <1 <.5 <.5 E2.1 <1 E.07 <1 09/25/02 1200 .48 250 <1 <.5 <.5 E1.3 <1 E.06 E.04 09/25/02 1230 1.00 250 <1 <.5 <.5 E2.3 <1 E.06 E.04 09/25/02 1330 .55 750 <1 <.5 <.5 E1.9 <1 E.04 <1 09/25/02 1400 1.25 750 <1 <.5 <.5 E1.8 <1 E.05 <1 

12	 09/06/02 0930 .75 5 <1 <.5 <.5 3.0 <1 E.05 <1 

09/06/02 1030 1.75 5 <1 <.5 <.5 2.9 <1 E.04 <1 09/06/02 1045 2.75 5 <1 <.5 <.5 E1.2 <1 E.04 <1 09/06/02 1215 .75 60 <1 <.5 <.5 4.1 <1 E.03 <1 09/06/02 1245 2.50 60 <1 <.5 <.5 3.2 <1 E.06 <1 09/06/02 1315 4.00 60 <1 <.5 <.5 E1.7 <1 E.06 <1 09/06/02 1500 .75 200 <1 <.5 <.5 3.7 <1 E.05 <1 09/06/02 1530 2.15 200 <1 E.05 <.5 3.9 <1 E.06 <1 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 <1 E.03 <.5 2.8 E.35 <.5 <1 05/28/03 1015 2.50 5 <1 <.5 <.5 4.6 E.55 <.5 <1 05/28/03 1045 .75 60 <1 E.03 <.5 4.0 E.37 <.5 <1 05/28/03 1115 2.50 60 <1 E.02 <.5 3.1 E.33 <.5 <1 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station 

number 

(fig. 1)

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

Carbaryl 

63-25-2 

Carbazole 

86-74-8 

Chlorpyrifos 

2921-88-2 

Cholesterol 

57-88-5 

Cotinine 

486-56-6 

Diazinon 

333-41-5

Dichlorvos 

62-73-7 

Bottom-sediment samples (micrograms per kilogram) 

10 09/25/02 1030 1.75 10 -- 2,400 <50 39,000 -- <50 -- 

09/25/02 1230 1.25 250 3,800 <50 20,000 -- <50 -- 09/25/02 1400 1.50 750 -- 3,000 <50 19,000 -- <50 --  03/12/03 1045 1.75 10 -- 590 <50 4,600 -- <50 -- 03/12/03 1245 1.25 250 -- 1,400 <50 4,000 -- <50 -- 

11 02/25/03 1430 1.50 25 -- 390 <50 8,600 -- <50 -- 

02/25/03 1500 1.50 250 -- 670 <50 5,200 -- <50 -- 

12 09/06/02 1045 2.75 5 -- 3,500 <50 22,000 -- <50 -- 

09/06/02 1315 4.25 60 -- 3,400 <50 63,000 -- <50 -- 09/06/02 05/28/03 05/28/03 

1600 

1200 

1230 

3.25 

4.38 

4.12 

200 

5 

60 

--

--

--

1,510 <50 15,000 

530 <50 31,000 

370 <50 12,000 

--

--

--

<50 

<50 

<50 

-- 

--

--
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station Distance, Galaxolide 	 

number Sample Sample Depth from dam Equilenin Estrone Fluoranthene (HHCB) Indole Isoborneol Isophorone ben

(fig. 1) date time (m) (m) 517-09-9 53-16-7 206-44-0 1222-05-5 120-72-9 124-76-5 78-59-1 

Water-column samples (micrograms per liter in unfiltered samples) 

10	 09/25/02 0945 0.55 10 <5 <5 <0.5 <0.5 <0.5 <0.5 <0.5 

09/25/02* 0946 .55 10 <5 <5 <.5 <.5 <.5 <.5 <.5 09/25/02 1030 1.50 10 <5 <5 E.12 <.5 <.5 <.5 <.5 09/25/02 1200 .48 250 <5 <5 <.5 <.5 <.5 <.5 <.5 09/25/02 1230 1.00 250 <5 <5 E.10 <.5 <.5 <.5 <.5 09/25/02 1330 .55 750 E.06 E.32 <.5 <.5 <.5 <.5 <.5 09/25/02 1400 1.25 750 E.03 E.19 E.17 <.5 <.5 <.5 <.5 

12	 09/06/02 0930 .75 5 <5 <5 <.5 <.5 <.5 <.5 <.5 

09/06/02 1030 1.75 5 <5 <5 <.5 <.5 <.5 <.5 <.5 09/06/02 1045 2.75 5 <5 <5 <.5 <.5 <.5 <.5 <.5 09/06/02 1215 .75 60 <5 <5 <.5 <.5 <.5 <.5 <.5 09/06/02 1245 2.50 60 <5 <5 <.5 <.5 <.5 <.5 <.5 09/06/02 1315 4.00 60 <5 <5 <.5 <.5 <.5 <.5 <.5 09/06/02 1500 .75 200 <5 <5 <.5 <.5 <.5 <.5 <.5 09/06/02 1530 2.15 200 <5 <5 <.5 <.5 <.5 <.5 <.5 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 <5 <5 <.5 <.5 <.5 <.5 <.5 05/28/03 1015 2.75 5 <5 <5 E.05 <.5 <.5 <.5 <.5 05/28/03 1045 .75 60 <5 <5 E.04 <.5 <.5 <.5 <.5 05/28/03 1115 2.50 60 <5 <5 E.02 <.5 <.5 <.5 <.5 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

Equilenin 

517-09-9

Estrone 

53-16-7 

Fluoranthene 

206-44-0 

Galaxolide 

(HHCB) 

1222-05-5 

Indole 

120-72-9 

Isoborneol 

124-76-5 

Isophorone 

78-59-1 

ben

10 09/25/02 

09/25/0209/25/02  03/12/0303/12/03 

1030 

1230 

1400 

 1045 

1245 

1.75 

1.25 

1.50 

1.75

1.25 

10 

250 

750 

10 

250 

<100 <100 

<100 

<100 

<100 

Bottom-sediment samples (micrograms per kilogram) 

<250 21,000 91 1,300 <250 28,000 50 1,100 

E38 24,000 E41 1,200 

<250 6,400 <50 81 

<250 8,500 <50 710 

<50 <50 

<50 

<50 

<50 

<50 <50 

<50 

<50 

<50 

11 02/25/03 

02/25/03 

1430 

1500 

1.50 

1.50 

25 

250 

<100 <100 

<250 <250 

5,700 8,300

<50 <50 

160 800 

<50 <50 

<50 <50 

12 09/06/02 

09/06/0209/06/02 05/28/0305/28/03 

1045 

1315 

1600 

1200 

1230 

2.75 

4.25 

3.25 

4.38 

4.12 

5 

60 

200 

5 

60 

<100 

<100 

<100 

<100 

<100 

<250 

<250 

<250 

<250 

<250 

25,000 

26,000

8,200

4,200 

3,800 

84 

290 

48 

15 

23 

2,600 

2,200 

1,000 

130 

110 

<50 

<50 

<50 

<50 

<50 

<50 

<50 

<50 

<50 

<50 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

N,NdiethylStation Distance, Methyl- toluamide 

number Sample Sample Depth from dam Menthol Metalaxyl salicylate Metolachlor (DEET) Naphthalene NP1EO 

(fig. 1) date time (m) (m) 89-78-1 57837-19-1 119-36-8 51218-45-2 134-62-3 91-20-3 27986-36-3 

Water-column samples (micrograms per liter in unfiltered samples) 

10 09/25/02 0945 0.55 10 <0.5 <0.5 <0.5 E0.02 E0.28 <0.5 <5 

09/25/02* 0946 .55 10 <.5 <.5 <.5 E.02 E.33 <.5 <5 09/25/02 1030 1.50 10 <.5 <.5 <.5 E.02 E.35 <.5 <5 09/25/02 1200 .48 250 <.5 <.5 <.5 E.02 E.3 <.5 <5 09/25/02 1230 1.00 250 <.5 <.5 <.5 E.02 E.28 <.5 <5 09/25/02 1330 .55 750 <.5 <.5 <.5 E.02 E.27 <.5 E.90 09/25/02 1400 1.25 750 <.5 <.5 <.5 E.02 E.23 <.5 E.57 

12 09/06/02 0930 .75 5 <.5 <.5 <.5 E.02 E.45 <.5 <5 

09/06/02 1030 1.75 5 <.5 <.5 <.5 E.02 E.42 <.5 <5 09/06/02 1045 2.50 5 <.5 <.5 <.5 E.02 E.46 <.5 <5 09/06/02 1215 .75 60 <.5 <.5 <.5 <.5 E.38 <.5 <5 09/06/02 1245 2.50 60 <.5 <.5 <.5 <.5 E.47 <.5 <5 09/06/02 1315 4.00 60 <.5 <.5 <.5 <.5 E.49 <.5 <5 09/06/02 1500 .75 200 <.5 <.5 <.5 <.5 E.42 <.5 <5 09/06/02 1530 2.15 200 <.5 <.5 <.5 <.5 .52 <.5 <5 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 <.5 <.5 <.5 E.11 E.32 <.5 <5 05/28/03 1015 2.75 5 E.13 <.5 <.5 E.16 E.29 <.5 <5 05/28/03 1045 .75 60 E.11 <.5 <.5 E.10 E.16 <.5 <5 05/28/03 1115 2.50 60 E.09 <.5 <.5 E.09 E.21 <.5 <5 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

Menthol 

89-78-1 

Metalaxyl 

57837-19-1 

Methylsalicylate 

119-36-8 

Metolachlor 

51218-45-2 

N,Ndiethyltoluamide 

(DEET) 

134-62-3 

Naphthalene 

91-20-3 

NP1EO 

27986-36-3 

10 09/25/02 

09/25/02 09/25/02  03/12/0303/12/03 

1030 1230 1400 

 1045 

1245 

1.75 1.25 1.50 

1.75 

1.25 

10 

250 750 

10 

250 

<50 <50 <50 

<50 

<50 

Bottom-sediment samples (micrograms per kilogram) 

<100 <100 <50 <100 <100 <100 <50 <100 <100 <100 <50 <100 

<100 <100 <50 <100 

<100 <100 <50 <100 

690 600 500 

390 

220 

4,800 3,200 3,100 

E240 

E210 

11 02/25/03 

02/25/03 

1430 

1500 

1.50 

1.50 

25 

250 

<50 <50 

<100 

<100 

<100 

<100 

<50 

<50 

<100 

<100 

170 

250 

E490 

530 

12 09/06/02 

09/06/02 09/06/02 05/28/03 05/28/03 

1045 

1315 1600 1200 

1230 

2.75 

4.25 3.25 4.38 

4.12 

5 

60 

200 

5 

60 

<50 

<50 

<50 

<50 

<50 

<100 

<100 

<100 

<100 

<100 

<100 

<100 

<100 

<100 

<100 

<50 

<50 

<50 

<50 

<50 

<100 

<100 

<100 

<100 

<100 

1,100 

570 

130 

250 

200 

8,000 

7,800 

2,880 

970 

670 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

PentaStation Distance, Para- chloronumber Sample Sample Depth from dam OP2EO cresol phenol Phenanthrene Phenol Prometon Pyrene 

(fig. 1) date time (m) (m) 2315-61-9 106-44-5 87-86-5 85-01-8 108-95-2 1610-18-0 129-00-0 

Water-column samples (micrograms per liter in unfiltered samples) 

10 09/25/02 0945 0.55 10 <1 <1 E0.03 <0.5 E0.21 E1.0 <0.5 

09/25/02* 0946 .55 10 <1 <1 E.03 <.5 <.5 E.10 <.5 09/25/02 1030 1.50 10 <1 <1 E.03 <.5 E.23 E.12 E.08 09/25/02 1200 .48 250 <1 <1 E.02 <.5 <.5 E.11 <.5 09/25/02 1230 1.00 250 <1 <1 E.03 <.5 E.29 E.11 E.07 09/25/02 1330 .55 750 E.19 <1 E.1 <.5 <.5 <.5 <.5 09/25/02 1400 1.25 750 E.13 <1 E.07 <.5 <.5 <.5 E.13 

12 09/06/02 0930 .75 5 <1 <1 <2 <.5 <.5 E.13 <.5 

09/06/02 1030 1.75 5 <1 <1 E.02 <.5 E.27 E.10 <.5 09/06/02 1045 2.50 5 <1 <1 E.02 <.5 <.5 E.04 <.5 09/06/02 1215 .75 60 <1 <1 <2 <.5 E.31 E.08 <.5 09/06/02 1245 2.50 60 <1 <1 E.02 <.5 E.26 E.14 <.5 09/06/02 1315 4.00 60 <1 <1 E.03 <.5 E.21 <.5 <.5 09/06/02 1500 .75 200 <1 <1 E.02 <.5 E.27 E.11 <.5 09/06/02 1530 2.15 200 <1 <1 E.02 <.5 E.33 E.13 <.5 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 <1 <1 <2 <.5 E.21 <.5 <.5 05/28/03 1015 2.75 5 <1 <1 <2 <.5 E.15 E.18 E.03 05/28/03 1045 .75 60 <1 <1 E.84 <.5 <.5 E.12 E.023 05/28/03 1115 2.50 60 <1 <1 <2 <.5 <.5 E.12 E.015 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m)

Distance, 

from dam 

(m) 

OP2EO 

2315-61-9 

Paracresol 

106-44-5 

Pentachlorophenol 

87-86-5 

Phenanthrene 

85-01-8 

Phenol 

108-95-2 

Prometon 

1610-18-0 

Pyrene 

129-00-0 

10 09/25/02 

09/25/02 09/25/02  03/12/0303/12/03 

1030 

1230 1400 

 1045 

1245 

1.75 

1.25 1.50 

1.75 

1.25 

10 

250 750 

10 

250 

<100 

<100 <100 

<1 

<100 

Bottom-sediment samples (micrograms per kilogram) 

590 <200 9,600 <100 

430 <200 13,000 <100 410 <200 10,000 <100 

180 <200 3,900 210 

220 <200 5,700 220 

E50 

<50<50 

<50 

<50 

14,000 

18,000 16,000 

5,200 

8,500 

11 02/25/03 

02/25/03

1430 

1500 

1.50 

1.50 

25 

250 

<1 

<100 

E99 

E94 

<200 

<200 

2,800 

4,000 

E99 

160 

<50 

<50 

4,500 

6,900 

12 09/06/02 

09/06/02 09/06/02 05/28/03 05/28/03 

1045 

1315 

1600 1200 

1230 

2.75 

4.25 

3.25 4.38 

4.12 

5 

60 

200 

5 

60 

<100 

<100 

<100 

<100 

<100 

1,700 

1,580 

1,000 

380 

270 

<200 

<200 

<200 

<200 

<200 

13,000 

11,000 

2,200 

2,700 

2,500 

<100 

<100 

E82 

320 

220 

E34 

<50 

<50 

<50 

<50 

16,000 

17,000 

7,600 

3,100 

2,000 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

TriethylTribromo­ citrate Tris (2­ 

Station Distance, Tetrachloro­ methane Tributyl (ethyl Triphenyl butoxyethyl)­ 

number Sample Sample Depth from dam ethylene (bromoform) phosphate Triclosan citrate) phosphate phosphate 

(fig. 1) date time (m) (m) 127-18-4 75-25-2 126-73-8 3380-34-5 77-93-0 115-86-6 78-51-3 

Water-column samples (micrograms per liter in unfiltered samples) 

10 09/25/02 0945 0.55 10 <0.5 <0.5 <0.5 <1 <0.5 <0.5 0.54 

09/25/02* 0946 .55 10 <.5 <.5 <.5 <1 <.5 <.5 .52 09/25/02 1030 1.50 10 <.5 <.5 E.06 <1 <.5 <.5 .71 09/25/02 1200 .48 250 <.5 <.5 <.5 <1 <.5 <.5 .61 09/25/02 1230 1.00 250 <.5 <.5 <.5 <1 <.5 <.5 .74 09/25/02 1330 .55 750 <.5 <.5 <.5 E.11 <.5 <.5 E.65 09/25/02 1400 1.25 750 <.5 <.5 <.5 E.08 <.5 <.5 E.54 

12 09/06/02 0930 .75 5 <.5 <.5 <.5 E.11 <.5 <.5 .74 

09/06/02 1030 1.75 5 <.5 <.5 <.5 E.09 <.5 <.5 .68 09/06/02 1045 2.50 5 <.5 <.5 <.5 E.11 <.5 <.5 .65 09/06/02 1215 .75 60 <.5 <.5 <.5 E.09 <.5 <.5 E.58 09/06/02 1245 2.50 60 <.5 <.5 <.5 E.14 <.5 <.5 .76 09/06/02 1315 4.00 60 <.5 <.5 <.5 E.13 <.5 <.5 .80 09/06/02 1500 .75 200 <.5 <.5 <.5 E.15 <.5 <.5 .7 09/06/02 1530 2.15 200 <.5 <.5 <.5 E.14 <.5 <.5 .76 09/06/02 1600 3.00 200 -- -- -- -- -- -- -- 05/28/03 0945 .75 5 <.5 <.5 E.15 E.14 <.5 E.07 .77 05/28/03 1015 2.75 5 <.5 <.5 E.23 E.22 <.5 E.1 .81 05/28/03 1045 .75 60 <.5 <.5 <.5 E.17 <.5 E.07 .62 05/28/03 1115 2.50 60 <.5 <.5 E.13 E.14 <.5 E.06 .63 
Table 11. Concentrations of selected organic wastewater compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Contin

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylpylphenol diethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; <, less than; E, estimated; *, replicate sample; --, no data] 

Station 

number 

(fig. 1) 

Sample 

date 

Sample 

time

Depth 

(m) 

Distance, 

from dam 

(m) 

Tetrachloroethylene 

127-18-4 

Tribromomethane 

(bromoform) 

75-25-2 

Tributyl 

phosphate 

126-73-8 

Triclosan 

3380-34-5 

Triethylcitrate 

(ethyl 

citrate) 

77-93-0

Triphenyl 

phosphate 

115-86-6 

Tris (2­

butoxyethyl)­

phosphate 

78-51-3 

10 09/25/02 

09/25/02 09/25/02 

1030 

1230 

1400 

1.75 

1.25 

1.50 

10 

250 

750 

<50 

<50 

<50 

Bottom-sediment samples (micrograms per kilogram) 

<50 <50 630 

<50 <50 190 

<50 <50 130 

--

--

--

<100 

<100 

E47 

<100 

<100 

<100 

 03/12/0303/12/03 

 1045 

1245 

1.75 

1.25 

10 

250 

<50 <50 

<50 <50 52 

<50 <50 E40 

--

--

<100 

<100 

E71 

<100 

11 02/25/03 1430 1.50 25 <50 <50 <50 89 -- <100 E72 

02/25/03 1500 1.50 250 <50 <50 <50 66 -- <100 <100 

12 09/06/02 

09/06/02 

1045 

1315 

2.75 

4.25 

5 

60 

<50 

<50 

<50 <50 880 

<50 <50 1,500 

--

--

<100 

<100 

<100 

<100 

09/06/02 05/28/03 05/28/03 

1600 

1200 

1230 

3.25 

4.38 

4.12 

200 

5 

60 

<50 

<50 

<50 

<50 <50 370 

<50 <50 220 

<50 <50 200 

--

--

--

<100 

<100 

<100 

<100 

<100 

<100 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek. 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site Distance, 

number Sample Sample Depth from dam 1,7-Dimethylxanthine Acetaminophen Azithromycin Caffeine Carbamazep

(fig. 1) date time (m) (m) 611-59-6 103-90-2 83905-01-5 58-08-2 298-46-4 

Water-column samples (micrograms per liter in filtered samples) 

10 09/25/02 0945 0.55 10 <0.018 0.039 -- 0.570 <0.011 

09/25/02* 0946 .55 10 <.018 .039 -- .540 <.011 09/25/02 1030 1.50 10 <.018 .035 -- .500 <.011 09/25/02 1200 .48 250 <.018 .031 -- .490 <.011 09/25/02 1230 1.00 250 <.018 .033 -- .500 <.011 09/25/02 1330 .55 750 <.018 .028 -- .510 <.011 09/25/02 1400 1.25 750 <.018 .031 -- .530 <.011 

12 09/06/02 0930 .75 5 <.018 <.009 -- <.014 E.004 

09/06/02 1030 1.75 5 <.018 <.009 -- <.014 E.004 09/06/02 1045 2.50 5 <.018 <.009 -- .018 E.004 09/06/02 1215 .75 60 <.018 <.009 -- <.014 E.004 09/06/02 1245 2.50 60 <.018 <.009 -- .021 <.011 09/06/02 1315 4.00 60 <.018 <.009 -- <.014 E.007 09/06/02 1500 .75 200 <.018 <.009 -- .019 E.007 09/06/02 1530 2.15 200 <.018 <.009 -- .019 E.006 09/06/02 1600 3.00 200 <.018 <.009 -- .022 E.009 05/28/03 0945 .75 5 .370 .045 -- .350 .012 05/28/03 1015 2.75 5 .450 .320 -- .860 .009 05/28/03 1045 .75 60 .390 .150 -- .530 .010 05/28/03 1115 2.50 60 .400 .090 -- .450 .009 08/27/03 1000 .50 5 .160 <.009 -- .034 .005 08/27/03 1015 2.25 5 .210 <.009 -- .011 .006 08/27/03 1030 3.75 5 .180 <.009 -- .031 E.003 08/27/03 1200 .50 60 .230 <.009 -- .043 .006 08/27/03 1215 2.63 60 .260 <.009 -- .090 .004 08/27/03 1230 4.50 60 .290 <.009 -- .100 .006 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

1,7-Dimethylxanthine 

611-59-6 

Acetaminophen 

103-90-2 

Azithromycin 

83905-01-5 

Caffeine 

58-08-2 

Carbamazep

298-46-4 

10 09/25/02 

09/25/0209/25/02

1030 

1230 1400

1.75 

1.25 1.50 

10 

250 750 

Bottom-sediment samples (micrograms per kilogram) 

-- -- --

-- -- ---- -- --

--

----

--

----

11 02/25/03 

02/25/03 

1430 

1530 

1.50 

1.50 

60 

200 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

18.8 

28.1 

40.6 

47.2 

12 09/06/02 

09/06/02 09/06/02 05/28/03 05/28/03 08/27/03

08/27/03 

1045 

1315 

1600 

1200 

1230 

1315 

1330 

2.75 

4.25

3.25

4.38 

4.12 

4.00 

4.75 

5 

60 

200 

5 

60 

5 

60 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

35.59 

--

--

--

8.62 

7.47 

10.46 

13.49 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site Distance, 

number Sample Sample Depth from dam Codeine Cotinine Dehydronifedipine Diltiazem Diphenhydram

(fig. 1) date time (m) (m) 76-57-3 486-56-6 67035-22-7 42399-41-7 58-73-1 

Water-column samples (micrograms per liter in filtered samples) 

10 09/25/02 0945 0.55 10 <0.024 0.048 <0.01 <0.012 <0.015 

09/25/02* 0946 .55 10 <.024 .047 <.01 <.012 <.015 09/25/02 1030 1.50 10 <.024 .043 <.01 <.012 <.015 09/25/02 1200 .48 250 <.024 .040 <.01 <.012 <.015 09/25/02 1230 1.00 250 <.024 .044 <.01 <.012 <.015 09/25/02 1330 .55 750 <.024 .048 <.01 <.012 <.015 09/25/02 1400 1.25 750 <.024 .047 <.01 <.012 <.015 

12 09/06/02 0930 .75 5 <.024 .088 <.01 <.012 <.015 

09/06/02 1030 1.75 5 <.024 .091 <.01 <.012 <.015 09/06/02 1045 2.50 5 <.024 .092 <.01 <.012 <.015 09/06/02 1215 .75 60 <.024 .093 <.01 <.012 <.015 09/06/02 1245 2.50 60 <.024 .093 <.01 <.012 <.015 09/06/02 1315 4.00 60 <.024 .093 <.01 <.012 <.015 09/06/02 1500 .75 200 <.024 .096 <.01 <.012 <.015 09/06/02 1530 2.15 200 <.024 .100 <.01 <.012 <.015 09/06/02 1600 3.00 200 <.024 .097 <.01 <.012 <.015 05/28/03 0945 .75 5 <.024 .190 <.01 <.012 <.015 05/28/03 1015 2.75 5 <.024 .170 <.01 <.012 <.015 05/28/03 1045 .75 60 <.024 .140 <.01 <.012 <.015 05/28/03 1115 2.50 60 <.024 .160 <.01 <.012 <.015 08/27/03 1000 .50 5 <.024 .240 <.01 <.012 <.015 08/27/03 1015 2.25 5 <.024 .250 <.01 <.012 <.015 08/27/03 1030 3.75 5 <.024 .240 <.01 <.012 <.015 08/27/03 1200 .50 60 <.024 .250 <.01 <.012 <.015 08/27/03 1215 2.63 60 <.024 .250 <.01 <.012 <.015 08/27/03 1230 4.50 60 <.024 .260 <.01 <.012 <.015 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time

Depth 

(m) 

Distance, 

from dam 

(m) 

Codeine 

76-57-3 

Cotinine 

486-56-6 

Dehydronifedipine 

67035-22-7 

Diltiazem 

42399-41-7

Diphenhydram

58-73-1 

10 09/25/02 

09/25/02 09/25/02

1030 

1230

1400

1.75 

1.25

1.50

10 

250 750 

Bottom-sediment samples (micrograms per kilogram) 

-- -- --

-- -- ---- -- --

--

----

--

----

11 02/25/03 

02/25/03 

1430 

1530 

1.50 

1.50 

60 

200 

MRL-ND 

MRL-ND 

2.99 

5.52 

MRL-ND 

MRL-ND 

MRL-ND 

6.72 

5.42 

20.7 

12 09/06/02 

09/06/02 09/06/02 05/28/03 05/28/03 08/27/03 08/27/03 

1045 

1315 

1600 

1200 

1230 

1315 

1330 

2.75 

4.25 

3.25 

4.38 

4.12 

4.00 

4.75 

5 

60 

200 

5 

60 

5 

60 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

.096 

2.66 

7.47 

MRL-ND 

2.20 

--

--

<0.01 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

<.012 

MRL-ND 

MRL-ND 

MRL-ND

MRL-ND 

--

--

<.015 

2.86 

2.13 

MRL-ND 

MRL-ND 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site Distance, 

number Sample Sample Depth from dam Fluoxetine Furosemide Gemfibrozil Ibuprofen Metformin 

(fig. 1) date time (m) (m) 54910-89-3 54-31-9 25812-30-0 15687-27-1 657-24-9 

Water-column samples (micrograms per liter in filtered samples) 

10 09/25/02 0945 0.55 10 <0.018 <0.039 <0.015 <0.018 <0.003 

09/25/02* 0946 .55 10 <.018 <.039 <.015 <.018 <.003 09/25/02 1030 1.50 10 <.018 <.039 <.015 <.018 <.003 09/25/02 1200 .48 250 <.018 <.039 <.015 <.018 <.003 09/25/02 1230 1.00 250 <.018 <.039 <.015 <.018 <.003 09/25/02 1330 .55 750 <.018 <.039 <.015 <.018 <.003 09/25/02 1400 1.25 750 <.018 <.039 <.015 <.018 <.003 

12 09/06/02 0930 .75 5 <.018 <.039 <.015 <.018 <.003 

09/06/02 1030 1.75 5 <.018 <.039 <.015 <.018 <.003 09/06/02 1045 2.50 5 <.018 <.039 <.015 <.018 <.003 09/06/02 1215 .75 60 <.018 <.039 <.015 <.018 <.003 09/06/02 1245 2.50 60 <.018 <.039 <.015 <.018 <.003 09/06/02 1315 4.00 60 <.018 <.039 <.015 <.018 <.003 09/06/02 1500 .75 200 <.018 <.039 <.015 <.018 <.003 09/06/02 1530 2.15 200 <.018 <.039 <.015 <.018 <.003 09/06/02 1600 3.00 200 <.018 <.039 -- -- -- 05/28/03 0945 .75 5 <.018 <.039 <.015 <.018 <.003 05/28/03 1015 2.75 5 <.018 <.039 <.015 <.018 <.003 05/28/03 1045 .75 60 <.018 <.039 <.015 <.018 <.003 05/28/03 1115 2.50 60 <.018 <.039 <.015 <.018 <.003 08/27/03 1000 .50 5 <.018 <.039 <.015 <.018 <.003 08/27/03 1015 2.25 5 <.018 <.039 <.015 <.018 <.003 08/27/03 1030 3.75 5 <.018 <.039 <.015 <.018 <.003 08/27/03 1200 .50 60 <.018 <.039 <.015 <.018 <.003 08/27/03 1215 2.63 60 <.018 <.039 <.015 <.018 <.003 08/27/03 1230 4.50 60 <.018 <.039 <.015 <.018 <.003 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

Fluoxetine 

54910-89-3 

Furosemide 

54-31-9 

Gemfibrozil 

25812-30-0 

Ibuprofen 

15687-27-1 

Metformin 

657-24-9 

10 09/25/02 

09/25/02 09/25/02 

1030 

1230 1400 

1.75 

1.25 1.50 

10

250 750 

Bottom-sediment samples (micrograms per kilogram) 

-- -- --

-- -- ---- -- --

--

----

--

----

11 02/25/03 

02/25/03 

1430 

1530 

1.50 

1.50 

60 

200

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND

MRL-ND 

MRL-ND 

12 09/06/02 

09/06/02 09/06/02 05/28/03 05/28/03 08/27/03 08/27/03 

1045 

1315 

1600 

1200 

1230 

1315 

1330 

2.75 

4.25 

3.25 

4.38 

4.12 

4.00 

4.75 

5 

60 

200 

5 

60 

5 

60 

--

--

<0.018 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

<0.039 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site Distance, Salbutamol 

number Sample Sample Depth from dam Ranitidine (Albuterol) Sulfamethoxazole Thiabendazole Trimethopr

(fig. 1) date time (m) (m) 66357-35-5 18559-94-9 723-46-6 148-79-8 738-70-5 

Water-column samples (micrograms per liter in filtered samples) 

10 09/25/02 0945 0.55 10 <0.01 <0.029 <0.023 <0.011 <0.014 

09/25/02* 0946 .55 10 <.01 <.029 <.023 <.011 <.014 

09/25/02 1030 1.50 10 <.01 <.029 <.023 <.011 <.014 

09/25/02 1200 .48 250 <.01 <.029 <.023 <.011 <.014 

09/25/02 1230 1.00 250 <.01 <.029 <.023 <.011 <.014 

09/25/02 1330 .55 750 <.01 <.029 <.023 <.011 <.014 

09/25/02 1400 1.25 750 <.01 <.029 <.023 <.011 <.014 

12 09/06/02 0930 .75 5 <.01 <.029 <.023 <.011 <.014 

09/06/02 1030 1.75 5 <.01 <.029 <.023 <.011 <.014 09/06/02 1045 2.50 5 <.01 <.029 <.023 <.011 <.014 

09/06/02 1215 .75 60 <.01 <.029 <.023 <.011 <.014 

09/06/02 1245 2.50 60 <.01 <.029 <.023 <.011 <.014 09/06/02 1315 4.00 60 <.01 <.029 <.023 <.011 <.014 

09/06/02 1500 .75 200 <.01 <.029 <.023 <.011 <.014 

09/06/02 1530 2.15 200 <.01 <.029 <.023 <.011 <.014 

09/06/02 1600 3.00 200 -- -- <.023 <.011 <.014 05/28/03 0945 .75 5 <.01 <.029 <.023 <.011 <.014 

05/28/03 1015 2.75 5 <.01 <.029 <.023 <.011 <.014 

05/28/03 1045 .75 60 <.01 <.029 <.023 <.011 <.014 

05/28/03 1115 2.50 60 <.01 <.029 <.023 <.011 <.014 

08/27/03 1000 .50 5 <.01 <.029 <.023 <.011 <.014 

08/27/03 1015 2.25 5 <.01 <.029 <.023 <.011 <.014 08/27/03 1030 3.75 5 <.01 <.029 <.023 <.011 <.014 

08/27/03 1200 .50 60 <.01 <.029 <.023 <.011 <.014 

08/27/03 1215 2.63 60 <.01 <.029 <.023 <.011 <.014 08/27/03 1230 4.50 60 <.01 <.029 <.023 <.011 <.014 
Table 12. Concentrations of selected pharmaceutical compounds in water-column and bottom-sediment samples from selected reaches of Brush Creek.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; m, meters; <, less than; --, no data; *, replicate sample; E, estimated; MRL-ND, no quantifiable presence determquantified] 

Site 

number 

(fig. 1) 

Sample 

date 

Sample 

time 

Depth 

(m) 

Distance, 

from dam 

(m) 

Ranitidine 

66357-35-5 

Salbutamol 

(Albuterol) 

18559-94-9 

Sulfamethoxazole 

723-46-6 

Thiabendazole 

148-79-8 

Trimethopr

738-70-5 

10 09/25/02 

09/25/02 09/25/02 

1030 

1230 1400 

1.75 

1.25 1.50 

10 

250 750 

Bottom-sediment samples (micrograms per kilogram) 

-- -- --

-- -- ---- -- --

--

----

--

----

11 02/25/03 

02/25/03 

1430 

1530 

1.50 

1.50 

60 

200 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND

MRL-ND 

MRL-ND 

1.98 

3.47 

MRL-ND 

MRL-ND 

12 09/06/02 

09/06/02 

09/06/02 

05/28/03 

05/28/03 

08/27/03 

08/27/03 

1045 

1315 

1600 

1200 

1230 

1315 

1330 

2.75 

4.25 

3.25 

4.38 

4.12 

4.00 

4.75

5 

60 

200 

5 

60 

5 

60 

--

--

--

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

--

MRL-ND

MRL-ND 

MRL-ND 

MRL-ND 

--

--

<0.023 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 

--

--

<.011 

.84 

.58 

MRL-ND 

MRL-ND 

--

--

<0.014 

MRL-ND 

MRL-ND 

MRL-ND 

MRL-ND 
Table 13. Quality-control data summary for selected organic wastewater compounds in laboratory reagent spike and blank samples.

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylphenol mono

ethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; concentrations in micrograms per liter; spike recoveries in average percent for all samples; number, number of samp

represents number of blank samples with detections; numbers in brackets represent average concentration in detection; nd, not detected; --, no data] 

Matrix 

1,4-Dichlorobenzene 

106-46-7 

17-αEthynyl 

estradiol 

57-63-6 

17-βEstradiol 

50-28-2 

1-Methylnaphthalene 

90-12-0 

2,6-Dimethylnaphthalene 

581-42-0 

2-Methylnaphthalene 

91-57-6 

3,4­

Dichlorophenylisocyanate 

102-36-3 

3-βCoprostanol 

360-68-9 

3-Methyl1H-indole 

(skatol) 

83-34-1 

4-Cumylphenol 

599-64-4 

Water, spike 

recovery (average percent) 

Number 

62.2 

42 

72.2 

13 

72.6 

42 

59.6 

13.0 

70.5 

33 

65.6 

13 

79.5 

39 

68.9 

42 

66.4 

12 

75.7 

13 

Water, blank 

detection 

(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) 

Water, blank 

concentration 

[nd] [nd] [nd] [nd] [nd] [nd] [nd] [nd] [nd] [nd] 

Sediment, spike 

recovery 

Number 

64.8 

3 

73.5 

3 

75.5 

3 

80.2 

3 

84.8 

3 

79.2 

3 

80.0 

3 

78.7 

3 

85.2 

3 

79.8 

3 

Matrix 

5-Methyl1H-benzotriazole 

136-85-6 

Acetophenone 

98-86-2 

AHTN 

21145-77-7 

Anthracene 

120-12-7 

Anthraquinone 

84-65-1 

Atrazine 

1912-24-9 

Benzo[a]­

pyrene 

50-32-8 

Benzophenone 

119-61-9 

Bis(2­

ethylhexyl)­

phthalate 

117-81-7 

Bisphenol A 

80-05-7 

Water, spike 

recovery (average percent) 

Number 

84.9 

16 

80.7 

42 

79.7 

16 

78.7 

39 

83.8 

16 

102.6 

3 

88.3 

42 

77.8 

13 

--

--

83.4 

40 

Water, blank 

detection 

(0) (0) (0) (0) (0) (0) (0) (0) (0) (0) 

Water, blank 

concentration 

[nd] [nd] [nd] [nd] [nd] [nd] [nd] [nd] [nd] [nd] 

Sediment, spike 

recovery 

Number 

----

51.4 

3 

80.4 

3 

82.9 

3 

83.9 

3 

68.4 

3 

93.2 

3 

95.5 

3 

--

--

39.6 

3 
Table 13. Quality-control data summary for selected organic wastewater compounds in laboratory reagent spike and blank samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylphenol mono

ethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; concentrations in micrograms per liter; spike recoveries in average percent for all samples; number, number of samp

represents number of blank samples with detections; numbers in brackets represent average concentration in detection; nd, not detected; --, no data] 

Matrix 

Caffeine 

58-08-2 

Camphor 

76-22-2 

Carbaryl 

63-25-2 

Carbazole 

86-74-8 

Chlorpyrifos 

2921-88-2 

Cholesterol 

57-88-5 

Cotinine 

486-56-6 

Diazinon 

333-41-5 

Dichlorvos 

62-73-7 

Dlimonene 

5989-27-5 

Water, spike 

recovery (average percent) 

84.2 70.5 82.7 90.4 84.0 70.6 73.0 77.6 74.0 45.6 

Number 39 13 42 16 33 42 16 42 13 13 

Water, blank 

detection 

(0) (0) (0) (0) (0) (3) (1) (0) (0) (1) 

Water, blank 

concentration 

[nd] [nd] [nd] [nd] [nd] [0.623] [0.077] [nd] [nd] [0.77] 

Sediment, spike 

recovery 

-- 75.1 -- 83.1 66.6 66.2 -- 71.6 -- 65.3 

Number -- -- -- 3 3 3 -- 3 -- 3 

Matrix 

Fluoranthene 

206-44-0 

Galaxolide 

(HHCB) 

1222-05-5 

Indole 

120-72-9 

Isoborneol 

124-76-5 

Isophorone 

78-59-1 

Isopropylbenzene 

(cumene) 

98-82-8 

Isoquinoline 

119-65-3 

Menthol 

89-78-1 

Metalaxyl 

57837-19-1 

Methylsalicylate 

119-36-8 

Water, spike 

recovery (average percent) 

87.4 81.4 60.4 71.3 73.5 51.2 67.6 70.6 80.0 71.1 

Number 42 13 13 13 13 13 13 13 13 13 

Water, blank 

detection 

(0) (0) (0) (0) (0) (0) (0) (0) (6) (0) 

Water, blank 

concentration 

[nd] [nd] [nd] [nd] [nd] [nd] [nd] [nd] [0.148] [nd] 

Sediment, spike 

recovery 

80.3 81.0 76.9 81.0 40.8 53.1 45.3 83.8 50.4 33.9 

Number 3 3 3 3 3 3 3 3 3 3 
Table 13. Quality-control data summary for selected organic wastewater compounds in laboratory reagent spike and blank samples.—Continued 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; AHTN, acetyl hexamethyl tetrahydro naphthalene; BHA, butylated hydroxyanisole; NP1EO, nonylphenol mono

ethoxylate; OP1EO, octylphenol monoethoxylate; OP2EO, octylphenol diethoxylate; concentrations in micrograms per liter; spike recoveries in average percent for all samples; number, number of samp

represents number of blank samples with detections; numbers in brackets represent average concentration in detection; nd, not detected; --, no data] 

Matrix 

Naphthalene 

91-20-3 

NP1EO 

27986-36-3 

NP2EO 

26027-38-2 

OP1EO 

2315-67-5 

OP2EO 

2315-61-9 

Paracresol 

106-44-5 

Pentachlorophenol 

87-86-5 

Phenanthrene 

85-01-8 

Phenol 

108-95-2 

Prometon 

1610-18-0 

Water, spike 

recovery (average percent) 

73.3 85.4 72.3 85.1 78.1 80.0 67.9 78.5 77.4 78.9 

Number 42 29 42 39 39 42 13 42 42 13 

Water, blank 

detection 

(0) (0) (2) (0) (1) (0) (0) (0) (1) (0) 

Water, blank 

concentration 

[nd] [nd] [1.55] [nd] [0.052] [nd] [nd] [nd] [0.92] [nd] 

Sediment, spike 

recovery 

83.2 82.9 89.5 82.6 86.2 80.9 22.5 83.4 52.0 66.8 

Number 3 3 3 3 3 3 3 3 3 3 

Matrix 

Stigmastanol 

19466-47-8 

Tetrachloroethylene 

127-18-4 

Tributyl 

phosphate 

126-73-8 

Triclosan 

3380-34-5 

Triethyl 

citrate 

(ethyl 

citrate) 

77-93-0 

Triphenyl 

phosphate 

115-86-6 

Tris (2­

butoxyethyl)­

phosphate 

78-51-3 

Tris (2­

chloroethyl)- 

phosphate 

115-96-8 

Tris (dichlorisopropyl)- 

phosphate 13674-87-8 

Water, spike 

recovery (average percent) 

81.4 36.9 86.5 85.9 78.1 85.8 81.3 85.6 83.9 

Number 17 42 37 39 13 42 36 16 42 

Water, blank 

detection 

(0) (0) (1) (0) (0) (0) (0) (0) (0) 

Water, blank 

concentration 

[nd] [nd] [0.12] [nd] [nd] [nd] [nd] [nd] [nd] 

Sediment, spike 

recovery 

66.8 35.0 97.3 79.9 -- 58.3 73.8 50.5 --

Number 3 3 3 3 -- 3 3 3 --
Table 14. Quality-control data summary for selected pharmaceutical compounds in laboratory reagent spike and blank samples. 

[Numbers below chemical names are Chemical Abstract Service (CAS) registry numbers; concentrations in micrograms per liter; spike recoveries in average percent for all samples; number, number of s

ses represents number of blank samples with detections; numbers in brackets represent average concentration in detection; nd, not detected; <, less than; --, no data] 

1,7-Dimethylxanthine Acetaminophen Caffeine Carbamazepine Cimetidine Codeine Cotinin

Matrix 611-59-6 103-90-2 58-08-2 298-46-4 51481-61-9 76-57-3 486-56

Water, spike recovery 122 84 94 79 27 93 82 

(average percent) 

Number 43 45 45 32 45 42 45 

Water, blank (0) (3) (3) (0) (0) (0) (0) 

detection 

Water, blank [nd] [0.004] [0.004] [nd] [nd] [nd] [nd] 

concentration 

Sediment, spike 43 43 58 44 <5 <5 53 

recovery 

Number 2 -- 2 -- 2 2 2 

Diltiazem Diphenhydramine Fluoxetine Furosemide Gemfibrozil Ibuprofen Metform

Matrix 42399-41-7 58-73-1 54910-89-3 54-31-9 25812-30-0 15687-27-1 657-24

Water, spike recovery 56 56 39 49 38 61 4 

(average percent)

Number 45 38 5 32 45 45 40 

Water, blank (1) (2) (0) (0) (0) (0) (0) 

detection 

Water, blank [0.0003] [0.0018] [nd] [nd] [nd] [nd] [nd] 

concentration 

Sediment, spike 63 39 <5 -- 32 32 52 

recovery 

Number 2 -- 2 -- 2 2 2 

Ranitidine Salbutamol Sulfamethoxazole Thiabendazole Trimethoprim Warfarin 

Matrix 66357-35-5 18559-94-9 723-46-6 148-79-8 738-70-5 81-81-2 

Water, spike recovery 38 77 62 72 75 78 

(average percent) 

Number 45 33 45 38 45 33 

Water, blank (1) (0) (1) (0) (1) (0) 

detection 

Water,blank [0.004] [nd] [0.002] [nd] [0.0009] [nd] 

concentration 

Sediment, spike <5 9 9.4 29 27 49 

recovery 

Number 2 2 2 2 2 2 
Table 15. List of benthic macroinvertebrate metrics used and metric status for stream sites sampled in 2002 and 2003. 

[MDNR, Missouri Department of Natural Resources; KDHE, Kansas Department of Health and Environment; ALUS, Aquatic Life Use Support Status; --, not applicable; EPT, Ephemeroptera-Plecoptera

Index; KBI, Kansas Biotic Index] 

2002 Sampling 

(MDNR protocol) 

Metric name and citation ALUS ALUS 

(if available) core metric 10-metric core metri

Total Taxa Richness (Barbour and others, 1999) X X --EPT Taxa Richness (Klemm and others, 1990) X X X Missouri Biotic Index (Rabeni and others, 1997) X X -- Shannon-Wiener Diversity Index (Washington, 1984) X X --Macroinvertebrate Biotic Index (Davenport and Kelly, 1983) -- -- X Kansas Biotic Index (Kansas Department of Health and Environment, 2000) -- -- X Percent Scrapers (Barbour and others, 1999) -- X -- Percent Chironomidea (Hayslip, 1993) -- X -- Percent Ephemeroptera-Plecoptera-Trichoptera (Barbour and others, 1999) -- -- X Percent Oligichaeta (Lenat, 1983; Kerans and Karr, 1994) -- -- -- Percent Tanytarsini Midges (DeShon, 1995) -- X -- Percent Ephemeroptera and Plecoptera -- -- -- Percent MO-BI tolerant organisms equal to or greater than 6.5 -- X -- Percent KBI intolerant taxa [tolerance value less than 3] (Huggins and Moffett, 1988; DeShon, 1995) -- -- -- Ratio of EPT to Oligicheata -- X -- Percent Dominant Intolerant Taxa (Shackleford, 1988) -- X -- Percent Mussel Loss -- -- Xa 

aNot analyzed. 
Table 16. Benthic macroinvertebrate metric values for sites sampled in 2002. 

[EPT, Ephemeroptera-Plecoptera-Trichoptera; MO-BI, Missouri Biotic Index; SWDI, Shannon-Wiener Diversity Index; >, greater than or equal to; M, March; <, less than; S, September] 

Site Percent 

number Sample Total Taxa EPT Taxa Percent Percent Tanytarsini Percent Ratio 

(fig. 1) period Richness Richness MO-BI SWDI Scrapers Chironomidae Midges MO-BI > 6.5 Oligi

1 M 37 8 6.2 2.74 2.2 42 6.8 65.4 192 M 23 6 6.6 1.99 1.6 51 7.8 78.7 433 M 14 2 6.5 1.59 .2 62 1.4 65.0 54 M 15 1 7.1 2.06 0 41 1.0 72.8 5 M 22 3 6.6 1.48 .4 65 1.7 88.8 36 M 12 1 7.2 1.49 .4 70 0 77.8 7 M 21 2 7.1 1.57 .3 59 .4 86.5 8 M 15 2 6.6 1.35 .1 71 .4 85.9 

12 M 12 0 7.9 1.47 1.4 79 .2 97.8 <13 M 16 1 6.8 .98 .1 87 .1 93.1 19 M 26 7 6.2 1.51 1.7 13 .5 23.0 3

Site Percent 

number Sample Total Taxa EPT Taxa Percent Percent Tanytarsini Percent Ratio 

(fig. 1) period Richness Richness MO-BI SWDI Scrapers Chironomidae Midges MO-BI > 6.5 Oligi

1 S 34 7 6.2 2.78 9.7 41 0.5 43.2 51 S 33 9 6.7 2.41 14.8 6 .6 45.3 2 S 24 7 6.2 2.09 1.7 13 .6 36.5 273 S 25 7 6.7 2.28 4.3 19 5.2 60.0 284 S 20 5 7.0 2.12 .7 34 2.8 72.3 35 S 21 5 6.1 1.83 3.4 14 .3 39.0 376 S 20 5 6.7 2.03 .4 13 0 58.3 47 S 13 5 6.2 1.42 .3 11 0 30.9 448 S 22 7 6.4 1.86 1.1 22 3.0 50.6 23 

12 S 12 1 8.6 .66 12.8 86 0 99.1 <13 S 17 5 6.4 1.72 1.2 18 .8 54.3 1319 S 35 9 6.4 2.47 .7 31 5.8 49.0 30
Table 17. Stream Condition Index (SCI) scores and Aquatic Life Use Support Status (ALUS) values for sites sampled in 2002. 

[EPT, Ephemeropetra-Plecoptera-Trichoptera; MO-BI, Missouri Biotic Index; SWDI, Shannon-Wiener Diversity Index; M, March; P, partially supporting; F, fully supporting; N, not supporting; S, Septe

Missouri Department of Natural Resource (MDNR) 

Site core metric 

number Sample SCI Score 

(fig. 1) period Total Taxa Richness score EPT Taxa Richness score MO-BI score SWDI score (MDNR core metric sum) 

1 M 5 3 3 5 16 2 M 3 3 3 5 14 3 M 3 1 3 3 10 4 M 3 1 3 5 12 5 M 3 1 3 3 10 6 M 1 1 3 3 8 7 M 3 1 3 3 10 8 M 3 1 3 3 10 

12 M 1 1 1 3 6 13 M 3 1 3 3 10 19 M 5 3 3 3 14 

Missouri Department of Natural Resource (MDNR) 

Site core metric 

number Sample SCI Score 

(fig. 1) period Total Taxa Richness score EPT Taxa Richness score MO-BI score SWDI score (MDNR core metric sum) 

1 S 5 3 5 5 18 2 S 5 3 5 5 18 3 S 5 3 5 5 18 4 S 3 3 3 5 14 5 S 3 3 5 3 14 6 S 3 3 3 5 14 7 S 3 3 5 3 14 8 S 3 3 5 3 14 

12 S 3 1 1 1 6 13 S 3 3 5 3 14 19 S 5 3 5 5 18 
Table 18. Benthic macroinvertebrate metric values for sites sampled in 2003. 

[EPT, Ephemeropetra-Plecoptera-Trichoptera; SWDI, Shannon-Wiener Diversity Index; MBI, Macroinvertebrate Biotic Index; KBI, Kansas Biotic Index] 

Site Percent P

number Total Taxa EPT Taxa Percent Percent Percent Tanytarsini Ephe

(fig. 1) Richness Richness SWDI MBI KBI Scrapers EPT Oligochaeta Midges and P

1 42 6 3.26 5.47 2.71 29.8 24.8 3.0 0 2 29 6 2.60 5.36 3.17 21.6 45.5 1.4 .9 3 25 5 2.55 6.18 2.70 27.3 17.6 1.4 .5 4 20 2 1.92 7.17 2.79 1.6 1.6 40.0 0 5 29 5 2.70 5.72 3.29 7.4 19.9 2.2 .4 6 24 1 2.40 7.68 3.76 5.2 12.0 20.6 0 7 23 4 2.66 5.68 2.91 14.3 37.1 7.8 0 8 22 2 2.18 5.08 2.95 6.2 53.1 1.3 .4 

12 20 0 2.05 7.88 4.55 9.6 0 31.7 0 13 21 2 2.17 5.70 3.23 3.4 47.5 11.9 0 19 28 5 2.66 5.51 3.04 13.2 30.2 1.2 0 
Tables 151 

Table 19. Aquatic Life Use Support Status (ALUS) values for sites sampled in February 2003. 

[EPT, Ephemeropetra-Plecoptera-Trichoptera; MBI, Macroinvertebrate Biotic Index; KBI, Kansas Biotic Index; F. February; --, indicates no data for percent mussel loss; N, not supporting; P, partially supporting] 

Kansas Department of Health and Environment (KDHE) 

core metric

 ALUS score 

Site EPT Taxa Percent Mussel (KDHE core-metric ALUS 

number Richness EPT percent MBI KBI loss average) status 

1 1 1 1 2 -- 1.25 N 

2 1 2 2 1 -- 1.50 P 

3 1 1 1 2 -- 1.25 N 

4 1 1 1 2 -- 1.25 N 

5 1 1 1 1 -- 1.00 N 

6 1 1 1 1 -- 1.00 N 

7 1 2 1 2 -- 1.50 P 

8 1 3 2 2 -- 2.00 P 

12 1 1 1 1 -- 1.00 N 

13 1 2 1 1 -- 1.25 N 

19 1 2 1 1 -- 1.25 N 
152 Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, MO and KS, 2000 to 2004 

Table 20. Ranking of sites sampled in 2002 and 2003 for 10 proportionally scaled metrics. 

[0, no shift between years; +, positive shift; -, negative shift] 

2002 2003 Site Shift in rank from 

number March 2002 to 

(fig. 1) March rank September rank Yearly average rank February rank February 2003 

1121 10 

2 3 4 3 2 1 

3434 31 

4 6 10 8 9 -3 

5555 6 -1 

6999 10 -1 

7776 52 

8867 71 

12 10 11 11 11 -1 

13 11 8 10 8 3 

19 212 4 -2 
Table 21. List of macroinvertebrate taxa included in the sampling of stream sites during this study. 

[--, not identified; sp., species undetermined] 

Phylum Class Order Family Subfamily Genus Taxa Re

-- -- -- -- Annelida Hirudinea Hirudinea 

-- -- Annelida Hirudinea Arhynchobdellae Erpobdellidae Erpobdellidae -- Annelida Hirudinea Rhynchobdellae Glossiphoniidae Helobdella Helobdella sp. -- Annelida Hirudinea Rhynchobdellae Glossiphoniidae Helobdella Helobdella stagnalis (Linnaeu-- Annelida Hirudinea Rhynchobdellae Glossiphoniidae Placobdella Placobdella ornata (Verrill) -- -- Annelida Hirudinea Rhynchobdellae Piscicolidae Piscicolidae 

-- -- -- -- Annelida Oligochaeta Megadrile 

-- -- Annelida Oligochaeta Enchytraeida Enchytraeidae Enchytraeidae -- -- Annelida Oligochaeta Lumbriculida Lumbriculidae Lumbriculidae -- -- Annelida Oligochaeta Tubificida Naididae Naididae -- Annelida Oligochaeta Tubificida Naididae Dero Dero sp. -- -- Annelida Oligochaeta Tubificida Tubificidae Tubificidae -- Annelida Oligochaeta Tubificida Tubificidae Branchiura Branchiura sowerbyi (Beddar

-- -- -- -- Arthropoda Arachnida Acari 

-- -- -- Arthropoda Insecta Coleoptera Coleoptera 

-- -- Arthropoda Insecta Coleoptera Carabidae Carabidae 

Arthropoda Insecta Coleoptera Dytiscidae Colymbetinae Agabus Agabus sp. Arthropoda Insecta Coleoptera Dytiscidae Colymbetinae Agabus Agabus sp. 

-- Arthropoda Insecta Coleoptera Dytiscidae Hydroporinae Hydroporini 

-- Arthropoda Insecta Coleoptera Dytiscidae Hydroporinae Hydroporini 

Arthropoda Insecta Coleoptera Dytiscidae Hydroporinae Neoporus Neoporus sp. 

-- Arthropoda Insecta Coleoptera Dryopidae Helichus Helichus basalis (LeConte) -- Arthropoda Insecta Coleoptera Dryopidae Helichus Helichus lithophilus (Germar) -- Arthropoda Insecta Coleoptera Elmidae Dubiraphia Dubiraphia sp. -- Arthropoda Insecta Coleoptera Elmidae Stenelmis Stenelmis sp. -- Arthropoda Insecta Coleoptera Elmidae Stenelmis Stenelmis sp. 

-- Arthropoda Insecta Coleoptera Elmidae Stenelmis Stenelmis sexlineata (Sanders-- Arthropoda Insecta Coleoptera Gyrinidae Dineutus Dineutus assimilis (Kirby) -- Arthropoda Insecta Coleoptera Haliplidae Peltodytes Peltodytes sp. 
Table 21. List of macroinvertebrate taxa included in the sampling of stream sites during this study.—Continued 

[--, not identified; sp., species undetermined] 

Phylum Class Order Family Subfamily Genus Taxa Re

-- Arthropoda Insecta Coleoptera Hydrophilidae Cymbiodyta Cymbiodyta sp. -- Arthropoda Insecta Coleoptera Hydrophilidae Enochrus Enochrus sp. -- -- Arthropoda Insecta Coleoptera Scirtidae Scirtidae 

-- -- -- Arthropoda Insecta Collembola Collembola 

-- -- -- Arthropoda Insecta Diptera Brachycera 

-- -- -- Arthropoda Insecta Diptera Nematocera 

-- -- Arthropoda Insecta Diptera Chironomidae Chironomidae -- -- Arthropoda Insecta Diptera Chironomidae Chironomidae 

-- Arthropoda Insecta Diptera Chironomidae Chironominae Chironominae -- Arthropoda Insecta Diptera Chironomidae Chironominae Chironomini -- Arthropoda Insecta Diptera Chironomidae Chironominae Micropsectra/Tanytarsus sp. 

-- Arthropoda Insecta Diptera Chironomidae Chironominae Phaenopsectra/Tribelos sp. -- Arthropoda Insecta Diptera Chironomidae Chironominae Tanytarsini 

Arthropoda Insecta Diptera Chironomidae Chironominae Axarus Axarus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Chironomus Chironomus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Cryptochironomus Cryptochironomus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Dicrotendipes Dicrotendipes sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Glyptotendipes Glyptotendipes sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Micropsectra Micropsectra sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Microtendipes Microtendipes sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Parachironomus Parachironomus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Paracladopelma Paracladopelma sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Paratanytarsus Paratanytarsus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Paratendipes Paratendipes sp. Arthropoda Insecta Diptera Chironomidae Chironominae Phaenopsectra Phaenopsectra sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Polypedilum Polypedilum sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Pseudochironomus Pseudochironomus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Rheotanytarsus Rheotanytarsus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Stictochironomus Stictochironomus sp. 

Arthropoda Insecta Diptera Chironomidae Chironominae Tanytarsus Tanytarsus sp. 
Table 21. List of macroinvertebrate taxa included in the sampling of stream sites during this study.—Continued 

[--, not identified; sp., species undetermined] 

Phylum Class Order Family Subfamily Genus Taxa Re

Arthropoda 

Arthropoda Arthropoda Arthropoda Arthropoda 

Insecta 

Insecta 

Insecta InsectaInsecta 

Diptera 

Diptera 

Diptera Diptera Diptera 

Chironomidae 

Chironomidae 

Chironomidae Chironomidae Chironomidae 

Chironominae Tribelos Tribelos sp. 

Diamesinae Diamesa Diamesa sp. 

Orthocladiinae Orthocladiinae Orthocladiinae Orthocladiinae Orthocladiinae Cricotopus/Orthocladius sp. 

------

Arthropoda 

Arthropoda 

Arthropoda 

Arthropoda 

Arthropoda 

Insecta 

Insecta 

Insecta 

Insecta 

Insecta 

Diptera 

Diptera 

Diptera 

Diptera

Diptera 

Chironomidae 

Chironomidae

Chironomidae 

Chironomidae 

Chironomidae 

Orthocladiinae Corynoneura Corynoneura sp. 

Orthocladiinae Cricotopus Cricotopus sp. 

Orthocladiinae Cricotopus Cricotopus bicinctus group 

Orthocladiinae Cricotopus Cricotopus bicinctus group 

Orthocladiinae Cricotopus Cricotopus (Isocladius) sp. 

Arthropoda 

Arthropoda 

Arthropoda 

Arthropoda 

Arthropoda 

Insecta 

Insecta 

Insecta 

Insecta 

Insecta 

Diptera 

Diptera 

Diptera 

Diptera 

Diptera 

Chironomidae 

Chironomidae 

Chironomidae 

Chironomidae 

Chironomidae 

Orthocladiinae Diplocladius Diplocladius cultriger (Kieffe

Orthocladiinae Diplocladius Diplocladius cultriger (Kieffe

Orthocladiinae Eukiefferiella Eukiefferiella sp. 

Orthocladiinae Hydrobaenus Hydrobaenus sp. 

Orthocladiinae Nanocladius Nanocladius sp. 

Arthropoda 

Arthropoda 

Arthropoda 

Arthropoda 

Arthropoda 

Insecta 

Insecta 

Insecta 

Insecta 

Insecta 

Diptera 

Diptera 

Diptera 

Diptera 

Diptera 

Chironomidae 

Chironomidae

Chironomidae 

Chironomidae 

Chironomidae 

Orthocladiinae Parakiefferiella Parakiefferiella sp. 

Orthocladiinae Parametriocnemus Parametriocnemus sp. 

Orthocladiinae Paraphaenocladius Paraphaenocladius sp. 

Orthocladiinae Paratrichocladius Paratrichocladius sp.

Orthocladiinae Psectrocladius Psectrocladius sp. 

Arthropoda 

Arthropoda 

Arthropoda Arthropoda Arthropoda 

Insecta 

Insecta 

Insecta Insecta Insecta 

Diptera 

Diptera 

Diptera Diptera Diptera 

Chironomidae 

Chironomidae 

Chironomidae Chironomidae Chironomidae 

Orthocladiinae Thienemanniella Thienemanniella sp. 

Orthocladiinae Tvetenia Tvetenia sp. 

Tanypodinae Pentaneurini Tanypodinae Tanypodinae Tanypodinae Thinemannimyia sp. (Coffman 

------

Arthropoda 

Arthropoda 

Arthropoda 

Arthropoda Arthropoda 

Insecta 

Insecta 

Insecta 

Insecta 

Insecta 

Diptera 

Diptera 

Diptera 

Diptera 

Diptera 

Chironomidae 

Chironomidae 

Chironomidae 

Empididae 

Empididae 

Tanypodinae Ablabesmyia Ablabesmyia sp. 

Tanypodinae Natarsia Natarsia sp. 

Tanypodinae Procladius Procladius sp. 

Empididae

Clinocerinae Clinocera Clinocera sp. 

-- --
Table 21. List of macroinvertebrate taxa included in the sampling of stream sites during this study.—Continued 

[--, not identified; sp., species undetermined] 

Phylum Class Order Family Subfamily Genus Taxa Re

-- -- Arthropoda Insecta Diptera Simuliidae Simuliidae -- -- Arthropoda Insecta Diptera Simuliidae Simuliidae -- Arthropoda Insecta Diptera Simuliidae Simulium Simulium sp. -- Arthropoda Insecta Diptera Simuliidae Simulium Simulium sp. 

Arthropoda Insecta Diptera Stratiomyidae Stratiomyinae Stratiomys Stratiomys sp. 

-- -- Arthropoda Insecta Diptera Tabanidae Tabanidae -- Arthropoda Insecta Diptera Tabanidae Tabanus Tabanus sp. -- -- Arthropoda Insecta Diptera Tipulidae Tipulidae 

Arthropoda Insecta Diptera Tipulidae Tipulinae Tipula Tipula sp. Arthropoda Insecta Diptera Tipulidae Limoniinae Hexatoma Hexatoma sp. 

-- Arthropoda Insecta Ephemeroptera Baetidae Acerpenna Acerpenna pygmaea (Hagen) -- Arthropoda Insecta Ephemeroptera Baetidae Baetis Baetis intercalaris (McDunno-- Arthropoda Insecta Ephemeroptera Baetidae Fallceon Fallceon quilleri (Dodds) -- Arthropoda Insecta Ephemeroptera Caenidae Caenis Caenis sp. -- -- Arthropoda Insecta Ephemeroptera Heptageniidae Heptageniidae -- Arthropoda Insecta Ephemeroptera Heptageniidae Stenacron Stenacron sp. -- Arthropoda Insecta Ephemeroptera Heptageniidae Stenacron Stenacron interpunctatum (Sa-- Arthropoda Insecta Ephemeroptera Heptageniidae Stenonema Stenonema sp. -- Arthropoda Insecta Ephemeroptera Heptageniidae Stenonema Stenonema femoratum (Say) -- Arthropoda Insecta Ephemeroptera Heptageniidae Stenonema Stenonema terminatum (Wals-- Arthropoda Insecta Ephemeroptera Leptophlebiidae Leptophlebia Leptophlebia sp. -- Arthropoda Insecta Ephemeroptera Leptohyphidae Tricorythodes Tricorythodes sp. 

Arthropoda Insecta Hemiptera Belostomatidae Belostomatinae Belostoma Belostoma flumineum (Say) Arthropoda Insecta Hemiptera Corixidae Corixinae Sigara Sigara sp. Arthropoda Insecta Hemiptera Corixidae Corixinae Trichocorixa Trichocorixa sp. 

-- Arthropoda Insecta Hemiptera Notonectidae Notonecta Notonecta sp. 

-- -- -- Arthropoda Insecta Lepidoptera Lepidoptera 

Arthropoda Insecta Megaloptera Corydalidae Corydalinae Corydalus Corydalus cornutus (Linnaeu

-- Arthropoda Insecta Megaloptera Sialidae Sialis Sialis sp. -- Arthropoda Insecta Odonata Aeshnidae Nasiaeschna Nasiaeschna pentacantha (Ra
Table 21. List of macroinvertebrate taxa included in the sampling of stream sites during this study.—Continued 

[--, not identified; sp., species undetermined] 

Phylum Class Order Family Subfamily Genus Taxa Re

-- Arthropoda Insecta Odonata Calopterygidae Calopteryx Calopteryx maculata (Beauvo

-- Arthropoda Insecta Odonata Calopterygidae Hetaerina Hetaerina americana (Fabrici-- -- Arthropoda Insecta Odonata Coenagrionidae Coenagrionidae -- Arthropoda Insecta Odonata Coenagrionidae Argia Argia sp. 

-- Arthropoda Insecta Odonata Coenagrionidae Argia Argia apicalis (Say) -- Arthropoda Insecta Odonata Coenagrionidae Argia Argia plana (Calvert) -- Arthropoda Insecta Odonata Coenagrionidae Argia Argia translata (Hagen) -- Arthropoda Insecta Odonata Coenagrionidae Enallagma Enallagma sp. -- Arthropoda Insecta Odonata Coenagrionidae Ischnura Ischnura sp. -- Arthropoda Insecta Odonata Corduliidae Epitheca Epitheca princeps (Hagen) -- -- Arthropoda Insecta Odonata Libellulidae Libellulidae -- Arthropoda Insecta Odonata Libellulidae Libellula Libellula sp. -- Arthropoda Insecta Odonata Libellulidae Plathemis Plathemis lydia (Drury) 

Arthropoda Insecta Plecoptera Capniidae Capniinae Allocapnia Allocapnia sp. Arthropoda Insecta Plecoptera Capniidae Capniinae Allocapnia Allocapnia vivipara (Claassen

-- -- Arthropoda Insecta Plecoptera Perlidae Perlidae -- -- Arthropoda Insecta Plecoptera Perlodidae Perlodidae 

Arthropoda Insecta Plecoptera Perlodidae Isoperlinae Isoperla Isoperla sp. 

-- Arthropoda Insecta Trichoptera Helicopsychidae Helicopsyche Helicopsyche borealis (Hagen

Arthropoda Insecta Trichoptera Hydroptilidae Hydroptilinae Hydroptila Hydroptila sp. Arthropoda Insecta Trichoptera Hydropsychidae Hydropsychinae Cheumatopsyche Cheumatopsyche sp. Arthropoda Insecta Trichoptera Hydropsychidae Hydropsychinae Hydropsyche Hydropsyche sp. Arthropoda Insecta Trichoptera Hydropsychidae Hydropsychinae Hydropsyche Hydropsyche betteni (Ross) Arthropoda Insecta Trichoptera Limnephilidae Limnephilinae Pycnopsyche Pycnopsyche sp. 

-- Arthropoda Insecta Trichoptera Polycentropodidae Polycentropodinae Cernotina/Polycentropus sp. 

-- Arthropoda Insecta Trichoptera Rhyacophilidae Rhyacophila Rhyacophila lobifera (Betten) 

-- Arthropoda Malacostraca Amphipoda Crangonyctidae Crangonyx Crangonyx sp. -- Arthropoda Malacostraca Amphipoda Hyalellidae Hyalella Hyalella azteca (Saussure) -- -- Arthropoda Malacostraca Decapoda Cambaridae Cambaridae 

Arthropoda Malacostraca Decapoda Cambaridae Cambarinae Orconectes Orconectes sp. 

-- Arthropoda Malacostraca Isopoda Asellidae Caecidotea Caecidotea sp. 
Table 21. List of macroinvertebrate taxa included in the sampling of stream sites during this study.—Continued 

[--, not identified; sp., species undetermined] 

Phylum Class Order Family Subfamily Genus Taxa Re

Arthropoda Malacostraca Isopoda Asellidae -- Lirceus Lirceus sp. Bryozoa -- -- -- -- -- Bryozoa 

Cnidaria Hydrozoa Hydroida Hydridae -- Hydra Hydra sp. Mollusca Mollusca Mollusca 

Bivalvia 

Bivalvia Bivalvia 

--

Veneroida Veneroida 

--

Corbiculidae Sphaeriidae 

--

----

--

Corbicula 

--

Bivalvia 

Corbicula sp. 

Sphaeriidae 

Mollusca Mollusca Mollusca 

Bivalvia 

Bivalvia Bivalvia 

Veneroida 

Veneroida Veneroida 

Sphaeriidae 

SphaeriidaeSphaeriidae 

Pisidiinae 

Sphaeriinae Sphaeriinae 

Pisidium Musculium Sphaerium 

Pisidium sp. 

Musculium sp. 

Sphaerium sp. 

Mollusca Mollusca Mollusca Mollusca 

Gastropoda 

Gastropoda Gastropoda 

Gastropoda

--

Basommatophora Basommatophora 

Basommatophora 

--

Ancylidae Ancylidae 

Lymnaeidae

--

----

Lymnaeinae 

Ferrissia Fossaria 

----

Gastropoda Ancylidae 

Ferrissia sp. 

Fossaria sp. 

Mollusca Gastropoda Basommatophora Physidae Physinae Physella Physella sp. Mollusca Mollusca Mollusca Mollusca Mollusca 

Gastropoda GastropodaGastropoda Gastropoda 

Gastropoda 

Basommatophora Basommatophora Basommatophora Basommatophora 

Mesogastropoda 

Planorbidae Planorbidae Planorbidae Planorbidae 

Hydrobiidae 

----------

--

Gyraulus Micromenetus Planorbella 

--

Planorbidae 

Gyraulus sp. 

Micromenetus dilatatus (Goul

Planorbella sp. 

Hydrobiidae 

Nematoda -- -- -- -- -- Nematoda 

Nematomorpha Gordioida -- -- -- -- Gordioida Platyhelminthes Turbellaria -- -- -- -- Turbellaria 
For additional information contact: 

U.S. Geological Survey 

Missouri Water Science Center 

1400 Independence Road 

Mail Stop 100 

Rolla, MO 65401 

(573) 308-3667 or


http://mo.water.usgs.gov
Wilkison and others—Water-Quality and Biologic Data for the Blue River Basin, Kansas City Metropolitan Area, Missouri and Kansas,—Data Series 127 

October 2000 to October 2004