U.S. Department of the Interior

U.S. Geological Survey

Data Series 141

Prepared in cooperation with the 

U.S. Environmental Protection Agency and the City of Lincoln

Occurrence of Selected Pharmaceutical and NonPharmaceutical Compounds and Stable Hydrogen 

and Oxygen Isotope Ratios in a Riverbank Filtration Study, 

Platte River, Nebraska, 2002 to 2005, Volume 2
Occurrence of Selected Pharmaceutical 

and Non-Pharmaceutical Compounds, 

and Stable Hydrogen and Oxygen Isotope 

Ratios in a Riverbank Filtration Study, 

Platte River, Nebraska, 2002 to 2005, 

Volume 2

By J.R. Vogel, L.B. Barber, E.T. Furlong, T.B. Coplen, I.M. Verstraeten, and 

M.T. Meyer

In cooperation with the U.S. Environmental Protection Agency and the City of Lincoln

Data Series 141

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

World Wide Web: http://www.usgs.gov/

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:

Vogel, J.R., Barber, L.B., Furlong, E.T., Coplen, T.B., Verstraeten, I.M., and Meyer, M.T., 2005, Occurrence of Selected 

Pharmaceutical and Non-Pharmaceutical Compounds, and Stable Hydrogen and Oxygen Isotope Ratios in a Riverbank 

Filtration Study, Platte River, Nebraska, 2002 to 2005, Volume 2: U.S. Geological Survey, Data Series 141, 92 p.
iii

Contents

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

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

Environmental Setting .................................................................................... 2

Methods ................................................................................................... 3

Sampling Methods ................................................................................. 3

Analytical Methods ................................................................................. 3

Pharmaceutical Compounds ............................................................... 3

Non-Pharmaceutical Compounds ......................................................... 3

Stable Hydrogen and Oxygen Isotope Ratios ............................................. 4

Quality Assurance/Quality Control ............................................................... 5

Streamflow and Well Field Pumpage .................................................................. 5

Field Water-Quality Properties ........................................................................ 6

Pharmaceutical Compounds ........................................................................... 7

Non-Pharmaceutical Compounds ..................................................................... 8

Dissolved Organic Carbon, Ultraviolet Absorbance at 254 nm Wavelength, and Specific

Ultraviolet Absorbance .................................................................. 8

Nitrilotriacetic Acid, Ethylenediaminetetraacetic Acid, and Nonylphenol

Ethoxycarboxylates ........................................................................ 9

Alkylphenol and Other Wastewater Compounds ................................................ 9

Hormones .......................................................................................... 10

Stable Hydrogen and Oxygen Isotope Ratios ......................................................... 10

References ................................................................................................ 10

Figures

1. Map showing location of the riverbank filtration study at a municipal well field along 

the Platte River in eastern Nebraska. ...................................................... 2

 2-4. Graphs showing:

 2. Comparison of average daily streamflow and historical mean daily 

 streamflow at the Platte River near Ashland gage. ................................. 6

 3. Flow conditions during sampling at the Platte River near Ashland gage, 

 April 2004 to January 2005. ............................................................ 7

 4. Pumpage in collector well W90-1H during the period of study. ..................... 8

Tables

1. Sites at which samples were collected for analysis during the riverbank filtration

study, Platte River, Nebraska, 2002 to 2005. ................................................ 12

2. Pharmaceuticals, including common names and general uses, analyzed for in

water-quality samples. ........................................................................ 13
iv

Tables—Continued

3. List of non-pharmaceutical organic compounds analyzed for in water-quality

samples by the U.S. Geological Survey National Research Program, Boulder

Laboratories during the riverbank filtration study, Platte River, Nebraska. ............ 14

4. List of non-pharmaceutical target compounds and ions (presented in order of

relative chromatographic elution) used in selected ion monitoring (SIM) gas

chromatography/mass spectrometry (GC/MS) analysis. ................................. 16

5. Monthly pumpage from vertical wells W49-9, W54-10, and W56-5 during the

riverbank filtration study, Platte River, Nebraska, 2001 to 2005. ........................ 18

6. Field properties measured for all samples collected during the riverbank filtration

study, Platte River, Nebraska, 2004 to 2005. ................................................ 19

7. Summary statistics of pharmaceuticals in supplementary samples collected during

the riverbank filtration study, Platte River, Nebraska, 2004 to 2005. ..................... 20

8. Pharmaceutical data for samples collected during the riverbank filtration study, 

Platte River, Nebraska, 2004 to 2005. ...................................................... 23

 9. Laboratory quality assurance/quality control data for pharmaceutical analyses 

during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005. ............ 28

10. Dissolved organic carbon, ultraviolet light absorbance at 254 nanometers, and

specific ultraviolet light absorbance measurements from water-quality samples

collected for the riverbank filtration study, Platte River, Nebraska, 2002 to 2005. ... 38

11. Summary statistics of nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid

(EDTA), andnonylphenolethoxycarboxylates (NPECs) in samples collected during

the riverbank filtration study, Platte River, Nebraska, 2002 to 2005. ..................... 42

12. Nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and

nonylphenolethoxycarboxylates (NPECs) concentrations from selected

water-quality samples collected during the riverbank filtration study, Platte River,

Nebraska, 2002 to 2005. ..................................................................... 44

13. Alkylphenol and other organic compound concentrations in samples collected 

for the riverbank filtration study, Platte River, Nebraska, 2002 to 2005. ............... 50

14. Summary statistics of hormones in samples collected during the riverbank 

filtration study, Platte River, Nebraska, 2002 to 2005. .................................... 54

15. Hormones in samples collected during the riverbank filtration study, Platte River,

Nebraska, 2002 to 2005. ..................................................................... 59

16. Stable hydrogen and oxygen isotopic composition for samples collected for the

riverbank filtration, Platte River, Nebraska, 2004 to 2005. ................................. 83
v

Conversion Factors and Datums

Multiply By To obtain

Length

centimeter (cm) 0.3937 inch (in.)

millimeter (mm) 0.03937 inch (in.)

micrometer (μm) 0.00003937 inch (in.)

nanometer (nm) 0.00000003937 inch (in.)

meter (m) 3.281 foot (ft)

kilometer (km) 0.6214 mile

(mi)

Volume

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

milliliter (mL) 0.03382 ounce, fluid (fl. oz)

microliter (μL) 0.00003382 ounce, fluid (fl. oz)

liter (L) 2.113 pint (pt) 

liter (L) 1.057 quart (qt) 

liter (L) 0.2642 gallon (gal) 

Flow rate

centimeter per second (cm/s) 0.03281 foot per second (ft/s)

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

milliliter per minute (mL/min) 0.3804 gallon per day (gal/d)

Mass

nanogram (ng) 3.527 x 10-11 ounce, avoirdupois (oz) 

microgram (μg) 0.00000003527 ounce, avoirdupois (oz) 

milligram (mg) 0.00003527 ounce, avoirdupois (oz) 

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×°C)+32

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

25 °C).

Vertical coordinate information is referenced to the North American Vertical Datum of 1988 

(NAVD 88).

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

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

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

or micrograms per liter (μg/L).

Water year is the 12-month period, October 1 through September 30, and is designated by the 

calendar year in which it ends. Thus, the water year ending September 30, 2003, is called the 

“2003 water year.”

Occurrence of Selected Pharmaceutical and NonPharmaceutical Compounds, and Stable Hydrogen and 

Oxygen Isotope Ratios in a Riverbank Filtration Study, 

Platte River, Nebraska, 2002 to 2005, Volume 2

By J.R. Vogel, L.B. Barber, E.T. Furlong, T.B. Coplen, I.M. Verstraeten, and M.T. Meyer

Abstract

This document is the second volume of a data series 

report that describes the data collected during a study 

conducted during 2001 through 2005 by the U.S. Geological 

Survey, in cooperation with the U.S. Environmental Protection 

Agency and the City of Lincoln, at an established riverbankfiltration well field with horizontal collector wells and vertical 

wells. The data were collected as part of a study designed to 

help researchers better understand the efficiency of riverbank 

filtration with respect to endocrine disrupting compounds 

and to evaluate the use of riverbank filtration as an effective means of drinking-water treatment. This study provides 

information that will be useful for (1) increased understanding of the processes and factors controlling the transport of 

endocrine disrupters, such as pesticides and pharmaceuticals 

during riverbank filtration, (2) better understanding of the 

physical and chemical processes that affect riverbank-filtration 

efficiency, and (3) managing the water resources of the eastern 

Platte River Basin. This report presents analytical methods 

and additional data for pharmaceuticals, dissolved organic 

carbon (DOC), ultraviolet absorbance at 254 nanometer (nm) 

wavelength (UV254), specific ultraviolet absorbance (SUVA), 

nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid 

(EDTA), nonylphenol ethoxycarboxylates (NPECs), and stable 

hydrogen and oxygen isotope ratios that were not available at 

the time of publication of Volume 1 in the data series. Data 

are presented as generalized statistics and in figures showing 

temporal variations.

Sites from which water-quality samples were collected 

for this study included wastewater sites (a cattle feedlot 

lagoon, a hog confinement lagoon, and wastewater-treatment 

plant effluent), surface-water sites (Platte River, Salt Creek, 

and Loup Power Canal), ground-water sites (one collector 

well and five vertical wells), and drinking-water sites (raw and 

finished). Field water-quality properties also were measured in 

samples from these sites.

Pharmaceuticals detected at least once in samples 

collected from the Platte River included 1,7-dimethylxanthine, acetaminophen, caffeine, carbamazapine, and cotinine. 

Among the ground-water samples, pharmaceutical compounds 

detected at low concentrations in at least one sample included 

1,7-dimethylxanthine, acetaminophen, carbamazapine, and 

trimethoprim.

When analyzing for non-pharmaceutical compounds 

in samples from the wastewater sites, the wastewater-treatment plant effluent samples had the highest concentrations of 

each of NTA, EDTA, and NPECs compounds. Surface-water 

samples from Salt Creek had higher concentrations of EDTA 

and NPECs than samples from the Platte River. NTA was not

detected in any samples from the ground-water sites. EDTA 

was detected in all samples from all wells. Detectable concentrations of EDTA were also observed in all samples from the 

raw water and finished water.

Introduction

Increased use of water from alluvial aquifers along riverbanks is expected given the rise in demand for drinking water 

(Solley and others, 1998), the ease of obtaining water from 

alluvial aquifers, the positive effects of riverbank filtration on 

the quality of surface water, and the potential promulgation 

of more stringent drinking-water regulations in the United 

States. This growing need for high-quality drinking water from 

alluvial aquifers has led to an increasing interest in the use of 

riverbank filtration as an inexpensive means of water-supply 

pretreatment.

Endocrine disrupting chemicals can be strictly defined as 

compounds in which the primary effect of the chemicals is on 

the endocrine system. These may include effects on the level 

of receptor-mediated hormone action, hormone synthesis, or 

clearance (Pickering and Sumpter, 2003). Rivers and streams 

may contain endocrine disrupting compounds, including 

pharmaceuticals and pesticides (Heberer and Stan, 1998; 

Heberer and others, 1998, 2001; Heberer and Dünnbier, 1999; 

Ternes, 1998; Daughton and Ternes, 1999; Kolpin and others, 

2002; Verstraeten and others, 1999, 2003; Verstraeten and 
�

Figure 1. Location of the riverbank filtration study at a municipal 

well field along the Platte River in eastern Nebraska.

Heberer, 2002; Verstraeten, Heberer, and Scheytt, 2002; and 

Verstraeten, Thurman, and others, 2002). By using a system 

that utilizes riverbank filtration as a pre-treatment for drinking 

water, ground-water recharge is induced from surface water by 

enhancing seepage losses from a stream. Filtration in riverbeds improves the raw surface-water quality by diminishing 

the concentrations of endocrine disrupters by the mechanisms 

of: (1) filtration; (2) dilution with ground water; (3) adsorption; and (or) (4) providing opportunities for degradation of 

biodegradable compounds. Riverbank filtration is considered 

to be a natural treatment technology of increased interest to 

water utilities with respect to the removal of microorganisms 

and removal of potential endocrine disrupters. 

To understand the efficiency of riverbank filtration with 

respect to organic compounds including endocrine disrupting 

compounds, more information is needed concerning the fate of 

contaminants as they move through the riverbed sediments into 

an aquifer and on to collector wells. A study was conducted 

during 2001 to 2005 at a riverbank filtration site on the Platte 

River in eastern Nebraska (fig. 1) by the U.S. Geological 

Survey (USGS), in cooperation with the U.S. Environmental Protection Agency (USEPA) and the City of Lincoln, to 

evaluate the use of riverbank filtration as an effective means 

of drinking-water treatment. During the study, water-quality 

samples were collected monthly or quarterly from 3 wastewater sites, 3 surface-water sites, 6 ground-water sites, and 2 

drinking-water sites. The samples were analyzed for selected 

pharmaceutical and non-pharmaceutical compounds and for 

stable hydrogen and oxygen isotope ratios. Additional stable 

hydrogen and oxygen isotope ratios from wells in the area of 

the well field also are included in the data tables of this report. 

One sample also was collected in April 2003 from the Loup 

Power Canal, which discharges into the Platte River upstream 

from the riverbank-filtration site. The objectives of the study 

were to provide information useful for (1) increased understanding of the processes and factors important in controlling 

the transport of endocrine disrupters such as pesticides and 

pharmaceuticals during riverbank filtration, (2) better understanding of the physical and chemical processes and factors 

that affect riverbank-filtration efficiency, and (3) managing the 

water resources of the eastern Platte River Basin.

The purpose of this report is to describe sampling and 

analytical methods used during the study and to present data 

obtained during the study from 2002 through 2005 that were 

unavailable at the time of publication of Volume 1 of the data 

series report for this study (Vogel and others, 2005). Data 

are presented for pharmaceuticals, dissolved organic carbon 

(DOC), ultraviolet absorbance at 254 nm wavelength (UV254), 

specific ultraviolet absorbance (SUVA), nitrilotriacetic acid 

(NTA), ethylenediaminetetraacetic acid (EDTA), nonylphenol 

ethoxycarboxylates (NPECs), and stable hydrogen and oxygen 

isotope ratios. Data are presented as generalized statistics.

Environmental Setting

The Platte River and its tributaries receive municipal 

wastewater from most cities along its course, except the City 

of Omaha, which releases wastewater into the Missouri River 

above the Platte River confluence. Vogel and others (2005) 

describe wastewater inputs associated with the Platte River 

including sewage treatment plants and animal feeding operations. The alluvial sediments deposited by the Platte River, 

consisting mainly of sand and gravel with some silt and clay, 

increasingly have been developed for drinking-water supplies 

by cities along the Platte River. At the same time, river and 

ground-water quality are being influenced by releases of 

wastewater and runoff from fields along the river. The municipal water supply from the well field along the river generally 

is affected by the quality of water from the local streams and 

the main channel (Verstraeten and others, 1999). The well 

field consists of 2 horizontal and 36 vertical wells completed 

in the alluvial sediments, generally at depths of less than 40 m. 

Water obtained from the well field is used for a population of 

more than 230,000 people, which is growing at a rate that will 

require development of additional large capacity wells in the 

future.

2 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Methods

This section describes water-quality sampling sites and 

methods, and laboratory analytical methods. Quality-assurance/quality-control samples collected for this study are also 

described.

Sampling Methods

Water-quality samples were collected from 14 sites 

(table 1). Representative samples of surface water and ground 

water, and grab samples of raw water and finished water were 

collected at the well field to evaluate changes in concentrations and loading over time. Well W90-1H is a horizontal 

collector well on an island in the middle of the Platte River, 

and wells W54-10 and W56-5 are vertical production wells 

relatively close to the Platte River, and W49-9 is a vertical 

production well farther from the river. Ashland Deep is a 

monitoring well that is farther from the river relative to wells 

W54-10 and W56-5. Raw water is influent to the drinkingwater treatment plant that uses water from the site as source 

water. In general, the raw water is approximately 50 percent 

vertical-well water and 50 percent horizontal-well water. This 

ratio varies throughout the year based on management of 

the well field. Finished water is the effluent of the drinkingwater treatment plant after treatment by rapid sand filtration, 

ozonation, and chloramines. Grab samples from wastewatertreatment plant effluent, grab samples from the banks of two 

lagoons of confined animal feeding operations (CAFOs), and 

representative samples from Salt Creek near the well field also 

were collected. One representative sample set was collected 

during spring base flow from the Loup Power Canal near its 

confluence with the Platte River upstream from the well-field 

site. Finally, a few water samples also were collected from a 

public-supply ground-water well (Memphis) 11 kilometers 

(km) upgradient (northeast) from the well field for comparison.

Representative samples were collected and cross contamination of samples was prevented by using approved USGS 

sampling protocols (U.S. Geological Survey, 1997-2004). 

Water samples were analyzed in the field for pH, temperature, 

specific conductance, dissolved oxygen (DO) and turbidity 

using USGS standard methods for collecting field measurements (U.S. Geological Survey, 1997-2004). All sampling 

equipment was cleaned and sterilized using standard USGS 

methods for the constituent of concern (U.S. Geological 

Survey, 1997-2004).

Analytical Methods 

Pharmaceuticals, non-pharmaceutical compounds (DOC, 

UV254, SUVA, organic wastewater compounds, (NTA, EDTA, 

and NPECs), and stable hydrogen and oxygen isotope ratios 

were determined by analytical laboratory methods. Pharmaceutical analysis was completed at the USGS National Water 

Quality Laboratory (NWQL) using USGS approved methods. 

The NWQL is certified by the National Environmental 

Laboratory Accreditation Program, which is the only program 

that accredits environmental laboratories on a national basis 

for drinking-water analyses. Other laboratory analyses 

described in this report were completed at various other USGS 

research laboratories. The USGS National Water Information 

System (NWIS) database permanently stores water-quality 

information collected by the USGS. However, some analytical data are not entered into the NWIS database, such as 

values for constituents that were obtained using non-approved 

methods (screening or research methods). These data are 

entered into a project water-quality database that is archived 

by the USGS Nebraska Water Science Center office.

Pharmaceutical Compounds

Pharmaceuticals were analyzed at the NWQL using 

a custom method designed to determine concentrations of 

27 over-the-counter and prescription pharmaceuticals and 

their metabolites in filtered natural-water samples (table 2). 

Pharmaceuticals were extracted by using disposable polypropylene syringe cartridges that contain 0.5 g of a polymeric 

sorbent. One liter of sample was pumped through the solidphase extraction (SPE) cartridge at a flow rate of 15 mL/min.

After extraction, the adsorbed compounds were eluted 

from the SPE cartridge by using two sequential elutions of 

6 mL methanol and 6 mL methanol that was acidified with 

trifluoroacetic acid. The two fractions were reduced under 

nitrogen to near dryness and then combined in a final volume 

of 1,000 μL. Analytes were chromatographically separated by 

high-performance liquid chromatography (HPLC) by using 

a reverse-phase octadecylsilane HPLC column and gradient 

elution, which was coupled to an electrospray ionization interface and quadrupole mass spectrometer for detection, identification, and quantitation. The extract was analyzed by using 

positive electrospray ionization. This method was in development for the duration of this study, with some compounds 

dropped from the method during the course of the study. The 

analytical results from this custom method are archived in the 

project database.

Non-Pharmaceutical Compounds

A suite of non-pharmaceutical compounds were analyzed 

by the U.S. Geological Survey National Research Program, 

Boulder Laboratories under the direction of Dr. Larry Barber 

as part of this study (table 3). Details of the DOC analytical 

methods are reported elsewhere (Barber and others, 2001). 

Briefly, DOC was measured by ultraviolet (UV)/ammonium 

persulfate oxidation, with conductivity detection using a 

Sievers Model 800 carbon analyzer. Ultraviolet light absorbance of the filtered samples was measured at 254 nm in a 

1-cm light path quartz cell using a Spectronics/Unicam 

Methods 3
Genesys model 10UV spectrometer. The UV254 data were 

converted to SUVA absorbance (Chin and others, 1994; Barber 

and others, 2001) by normalizing to DOC concentration 

(SUVA=UV254/DOC).

NTA, EDTA, nonylphenol monoethoxycarboxylate (NP1EC), nonylphenol diethoxycarboxylate (NP2EC), 

nonylphenol triethoxycarboxylate (NP3EC), and nonylphenol tetraethoxycarboxylate (NP4EC) were measured using a 

modification (Barber and others, 2000, 2003) of the method 

of Schaffner and Giger (1984). Samples (100 mL) were 

oven evaporated to dryness (90 °C), acidified with 5 mL of 

50 percent (volume/volume) formic acid/distilled water and 

vacuum evaporated to dryness (25°C). Acetyl chloride/propanol (10 percent volume/volume) was added, the sample heated 

at 90°C for 1 hour to form the propyl-esters, and the propylesters were extracted into chloroform. The chloroform extracts 

were evaporated to dryness and re-dissolved in toluene for 

analysis by gas chromatography/mass spectrometry (GC/MS) 

as described next.

Alkylphenol and other wastewater compounds were 

measured as described in Barber and others (2000, 2003). 

This method uses continuous liquid-liquid extraction (CLLE) 

with methylene chloride at pH 2. The CLLE exposes the 

sample to methylene chloride by refluxing and dispersing the 

solvent through a coarse glass frit, resulting in formation of 

micro-droplets that travel an extended path through the sample 

matrix allowing effective partitioning of the wastewater 

compounds into the solvent. After extraction, the solvent was 

dried over sodium sulfate and the volume reduced to 500 L 

under a stream of nitrogen for GC/MS analysis.

Hormones were extracted by SPE using octadecyl 

surface-modified-silica (C18) ENVI-DiskTM (47 mm, 5 μm 

mean flow-through porosity) using a stainless steel pressurized 

filtration apparatus (Barber and others, 2000, 2003). All glassware used in the hormone isolation procedure was deactivated 

with Sylon-CT (Supelco). The SPE disks were placed in the 

filtration apparatus and conditioned by double rinsing with 

methanol followed by distilled water. A 1-L raw sample was 

passed through the disk at a flow rate of 4 mL/min, the disk 

was dried for 5 minutes with nitrogen gas at ambient temperature, and the disk was eluted with 25 mL of methanol followed 

by two rinses with 10 mL of methanol. The methanol was 

reduced in volume to 2 mL by nitrogen evaporation, quantitatively transferred to a 5-mL reaction vial, and evaporated to 

dryness. The residue was reacted with 2 percent o-methoxyamine hydrochloride (MOX) in pyridine followed by reaction 

with bis(trimethylsilyl)trifluoroacetamide (BSTFA) containing 

10 percent trimethylchlorosilane (TMCS). This reaction forms 

the MOX ethers of the keto groups and the trimethylsilyl 

(TMS) ethers of the hydroxy groups, making the compounds 

more amenable to GC/MS analysis.

The propyl-ester derivatives (NTA, EDTA, NPEC), the 

wastewater compounds, and the MOX/TMS derivatives of 

the steroid/hormone compounds were analyzed by electron 

impact GC/MS in both the full-scan and selected ion monitoring (SIM) modes. The general GC conditions were: Hewlett 

Packard (HP) 6890 GC; column - HP Ultra II (5 percent 

phenylmethyl silicone), 25 m x 0.2 mm, 33 μm film thickness; 

carrier gas, ultra-high purity helium with a linear-flow velocity 

of 27 cm/s; injection port temperature, 300°C; initial oven 

temperature, 50°C; split vent open, 0.75 minute; ramp rate, 

6°C/min to 300°C; hold time, 15 minutes at 300°C. The MS 

conditions are as follows: HP 5973 Mass Selective Detector; 

tune with perflurotributylamine; ionization energy, 70 electron 

volts (eV); source pressure, 1x10-5 torr; source temperature, 

250°C; interface temperature, 280°C; full scan, 40 to 550 

atomic mass units (amu) at 1 scan per second. Concentrations were calculated based on SIM data using diagnostic ions 

for each compound (table 4). Each compound was identified 

based on matching of retention times (± 0.02 minutes) and ion 

ratios (± 20 percent) determined from analysis of authentic 

standards. An 8-point calibration curve (typically ranging from 

0.01 to 35 ng/μL) and internal standard (deuterated polycyclic 

aromatic hydrocarbons, table 4) procedures were used for 

calculating concentrations. Surrogate standards (table 3) were 

added to the samples prior to extraction and derivatization to 

evaluate compound recovery and whole method performance.

Stable Hydrogen and Oxygen Isotope Ratios

Variations in stable isotope abundance ratios typically 

are small. Stable isotope ratios commonly are determined as 

relative difference in the ratio of the less abundant isotope 

(usually heavy) to the more abundant isotope (usually light) 

of the sample with respect to the reference. This difference is 

designated δ(

i

E) notation (pronounced delta) and it is defined 

according to the relation in equation 1:

� � (1) � � � �

� � � � � �

� �

� �

� �

�

�

�

� �

�

� � ��

� �

� � �

��� ���

� � �

where δ(

i

E) refers to the delta value of isotope number i

of element E of sample X relative to the reference, and 

nX(

i

E)/nX(

j

E) and nref(

i

E)/nref(

j

E) are the ratios of the isotope 

amounts in unknown X and a reference. A positive δ(

i

E) value 

indicates that the unknown is more enriched in the heavy 

isotope than the reference. A negative δ(iE) value indicates 

that the unknown is depleted in the heavy isotope relative to 

the reference. The δ(

i

E) is commonly shortened to δiE and has 

been reported in parts per hundred (% or percent), parts per 

thousand (‰ or per mill), and parts per ten thousand. Herein, 

δ(

i

E) values are given in per mill; thus, the expression can be 

written

� � (2) � � � �

� � � � � ���� �

� �

� �

�

��� ���

� � � � �

� � � � �

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� � �

�

� �

�

� �

because a per mill is 1/1000, and 1000 · 1/1000 = 1.

4 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
The stable hydrogen isotope ratio is:

(3) � � � �

� � � � � �����

� �

� �

� �

�����

�

�����

�

�

�

� � � � �

� � � � �

�

� �

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where the isotope ratio is expressed relative to Vienna 

Standard Mean Ocean Water (VSMOW) reference water 

and is normalized such that δ2H of Standard Light Antarctic 

Precipitation (SLAP) reference water is –428 ‰ (Coplen, 

1996). Hydrogen isotope ratios were determined by hydrogen-water equilibration and analysis by isotope ratio mass 

spectrometry (Coplen and others, 1991). About 25 percent of 

analyses each day were reference samples and samples are 

analyzed in replicate. The 2-sigma uncertainty of hydrogen 

isotopic results is 2 per mill. This means that if a sample was 

resubmitted for analysis at a later date, there was a 95-percent 

probability that the hydrogen isotopic result reported will be 

within 2 per mill of that originally reported.

The oxygen isotope ratio is:

(4)

� � � �

� � � � � �����

�� �

� �

� ��

�����

��

�����

��

�

��

�� � � � �

� � � � �

�

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�

� �

where the isotope ratio is expressed relative to VSMOW reference water and is normalized such that δ18O of SLAP reference water is –55.5 ‰ (Coplen, 1996). Oxygen isotope ratios 

were determined by the carbon dioxide-water equilibration 

method of Epstein and Mayeda (1953). About 20 percent of 

analyses each day were isotopic reference waters and about 

35 percent of samples were analyzed in replicate. The 2-sigma 

uncertainty of oxygen isotopic results is 0.2 per mill. This 

means that if a sample is resubmitted for analysis at a later 

date, there is a 95-percent probability that the isotopic result 

reported will be within 0.2 per mill of that originally reported.

Quality Assurance/Quality Control

Various quality-assurance (QA) samples were collected 

for this study. Duplicate samples consist of splits from the 

same sample aliquot that are collected in such a manner that 

the samples are assumed to be essentially identical in composition. Five duplicate samples for analysis of NTA, EDTA, 

and NPECs were collected during the study: a wastewatertreatment plant effluent sample in May 2003, a surface-water 

sample from the Platte River in May 2003, a ground-water 

sample from well W90-1H in May 2002, a ground-water 

sample from well W49-9 in May 2003, and a finished-water 

sample in August 2002. Laboratory reagent blanks (LRB) 

and laboratory reagent spikes (LRS) were analyzed throughout the study for pharmaceutical compounds. The LRB is 

prepared using an appropriate matrix. The selected matrix 

should have negligible concentrations of compounds for that 

particular analysis. The LRB was processed in the same way 

as the accompanying environmental sample and so was used to 

monitor for random contamination introduced from laboratory 

processing. If a compound was detected and identified in the 

LRB, quantitation of that same compound in the environmental sample was qualified.

The LRS is a sample where known concentrations of 

the compounds of interest are added, usually into a synthetic 

(reagent) matrix. Evaluation of reagent spike data yields 

information about method performance (Pirkey and Glodt, 

1998). In addition, a surrogate spike (SS) of 4-n-NP2EC was 

analyzed concurrently with each analysis for DOC, UV254, 

SUVA, NTA, EDTA, and NPECs to determine percent recovery in the sample matrix. Likewise, an SS of D21-4-methyl2,6-di(tert-butyl)phenol, 4-n-nonylphenol, and D6-bisphenol 

A was analyzed concurrently with each analysis of the alkylphenol and other organic compounds schedule.

An equipment blank for analysis of pharmaceuticals was 

collected in January 2005. Equipment blanks are samples 

prepared in the field using normal sampling protocol, except 

using an ultrapure water sampling matrix as the sample 

source. Additional quality-assurance and quality-control (QC) 

measures inherent to the laboratory methods and consistent 

with the QA of NTA, EDTA, NPECs, hormones, and alkylphenol and other wastewater compounds also were taken. The 

results of the QA/QC samples are presented in the tables and 

discussed in the text in the following sections of the report.

Streamflow and Well Field Pumpage

Streamflow in the Platte River from April 2004 to 

January 2005 at the established well field was compared to 

the natural variability in the hydrologic system through use 

of long-term streamflow information. Historical median 

streamflow data used for comparisons are available at 

http://nwis.waterdata.usgs.gov/ne/nwis/sw for the Platte River 

near Ashland (station 06801000) for water years 1929 to 2003. 

Daily mean streamflow during April 2004 to January 2005 

was compared to the historical mean daily streamflow in the 

Platte River (fig. 2). Flow conditions were tracked for several 

days around each sample date at this site (fig. 3). Comparative 

streamflow and streamflow conditions during sampling times 

between December 2001 and May 2003 were documented by 

Vogel and others (2005).

Pumping was variable during the period from April 2004 

to January 2005 in the horizontal collector well W90-1H 

(fig. 4). Pumpage in this well for the period between December 2001 and May 2003 was documented by Vogel and others 

(2005). Monthly pumping from vertical wells W49-9, 

W54-10, and W56-5 also was variable from November 2001 

to January 2005 (table 5).

Methods 5
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Field Water-Quality Properties

Field water-quality properties were measured at selected 

sites between April 2004 and January 2005 (table 6). 

Additional field-water quality values for all samples analyzed 

for NTA, EDTA, NPECs, and hormones were reported in 

Vogel and others (2005). Among the five samples collected 

at the Platte River site, specific conductance varied from 

390 microSiemens (μS)/cm in November 2004 to 575 μS/cm 

in January 2005. In samples from ground-water sites, well 

W49-9 consistently had the highest specific conductance, and 

wells W54-10 and W56-5 had the lowest specific conductance. 

Specific conductance values from samples from wells W54-10 

and W56-5 were very similar to each other.

Water temperature in Platte River samples, and to a lesser 

extent W90-1H, W54-10, and W56-5 samples, reflected the 

air temperature at time of measurement. The water temperature was most consistent throughout the sampling period in 

wells W49-9 and Ashland Deep, which were located farther 

from the river than were the other wells.

The pH in the Platte River samples was higher during the 

spring than winter. All pH measurements in the ground-water 

wells generally were stable. The lowest consistent pH readings 

were from samples collected from well W49-9, whereas the 

highest consistent pH readings were from samples collected 

from wells W90-1H and W54-10.

Dissolved oxygen was consistently higher in surfacewater samples collected from the Platte River than in groundwater samples. The DO concentrations in ground-water 

samples were generally less than 1 mg/L during the September and November samples, and greater than 1 mg/L during 

the April and January samples, except for samples from the 

Ashland Deep well, which were always less than 1 mg/L.

In general, surface-water samples from the Platte River 

had substantially greater turbidity than ground-water samples; 

however, turbidity was not always measured in ground-water 

samples. In ground-water samples in which turbidity was 

measured, the turbidity was always less than 1.0 nephelometric 

turbidity units (NTU) except for samples from the Ashland 

Deep well.

6 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Figure 3. Flow conditions during sampling at the Platte River near Ashland gage, April 2004 to January 2005.

Sample collection times are represented by stars.

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Methods 7

Pharmaceutical Compounds

Results of analyses for pharmaceuticals in samples 

collected between April 2004 and January 2005 are presented 

in this section of the report. Results of QA/QC samples that 

were analyzed for pharmaceutical compounds during that 

period also are presented.

Concentrations of 27 pharmaceuticals were determined 

in samples from one surface-water site, five ground-water 

sites, and one drinking-water site (tables 7 and 8). One duplicate sample was collected and analyzed for pharmaceuticals 

in January 2005 from the Platte River. In the Platte River 

environmental sample from January 2005, acetaminophen 

and cotinine were detected at low levels, but pharmaceuticals 

were not detected in the duplicate sample. A set blank, set 

spike, and 0.10 continuing calibration verification (ccv) also 

were analyzed during each analysis run (table 9). Several 

compounds, including 1,7-dimethylxanthine, azithromycin, 

cimetidine, erythromycin, fluoxitine, gemfibrozil, ibuprofen, 
Figure 4. Pumpage in collector well W90-1H during the period of study.

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8 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

miconazole, ranitidine, salbutamol, and sulfamethoxazole, 

were recovered in concentrations less than 60 percent of the 

surrogate spike level on some of the sampling dates. These 

compounds may still be present in environmental samples 

from the dates that the surrogate spike recovery was less than 

60 percent, but not detectable due to matrix or interaction 

effects.

Measured concentrations less than the Laboratory reporting level (LRL) are denoted on the data tables with an “E” 

(estimated). Measured concentrations for compounds where 

the LRL was not determined also are denoted with an “E.” 

Results are denoted with a “B” when the measured concentration is less than 10 times the concentration detected in the 

laboratory blank for that compound. Finally, detections of 

caffeine, caffeine degradates, and cotinine (nicotine degradate) may be a result of contamination because the analytical 

method is very sensitive, and the use of products containing 

these compounds prior to or during sampling, sample processing, or analysis could result in detectable concentrations.

In samples collected from the Platte River, five 

compounds (1,7-dimethylxanthine, acetaminophen, caffeine, 

carbamazapine, and cotinine) were detected at least once. 

Among the ground-water samples, pharmaceutical compounds 

detected at low concentrations in at least one sample included 

1,7-dimethylxanthine (in W54-10 and W56-5), acetaminophen 

(in W49-9 and W56-5), carbamazapine (in W90-1H, W49-9, 

W56-5, and Ashland Deep), and trimethoprim (in W56-5). 

In the finished-water samples none of the pharmaceutical 

compounds were detected except for a low estimated concentration of carbamazapine in the sample collected on November 

16, 2004.

Non-Pharmaceutical Compounds

Results for non-pharmaceutical compounds collected 

between February 2002 and May 2003 are presented in 

this section of the report. Non-pharmaceutical compounds 

presented here include DOC, UV254, SUVA, NTA, EDTA, 

NPECs, and hormones.

Dissolved Organic Carbon, Ultraviolet 

Absorbance at 254 nm Wavelength, and Specific 

Ultraviolet Absorbance

 Samples for analysis of DOC, UV254, and SUVA were 

collected from 3 wastewater sites, 2 surface-water sites, 4 

ground-water sites, and 2 drinking-water sites (table 10). The 

highest DOC concentrations of the wastewater samples were 

measured in cattle feedlot lagoon samples, and the lowest 
Methods 9

DOC concentrations of the wastewater samples were measured 

in the wastewater-treatment plant effluent samples. Cattle 

feedlot lagoon samples also generally had the highest UV254

measurements. Samples from both lagoons had similar SUVA 

measurements, but samples from the wastewater-treatment 

plant effluent had SUVA measurements that were less variable 

and in the lower range of measurements from lagoon samples. 

Samples from both surface-water sampling sites showed 

similar ranges of DOC, UV254, and SUVA. In ground-water 

samples, DOC, UV254, and SUVA measurements generally 

decreased relative to distance of the well from the Platte River. 

DOC, UV254, and SUVA also were similar in samples from 

both raw and finished water. Generally, SUVA measurements 

were in the same range for samples from all sites except the 

cattle and hog wastewater lagoons.

Nitrilotriacetic Acid, Ethylenediaminetetraacetic Acid, and Nonylphenol Ethoxycarboxylates

Samples for analysis of NTA, EDTA, and NPECs were 

collected from 3 wastewater sites, 3 surface-water sites, 

4 ground-water sites, and 2 drinking-water sites (tables 11 

and 12). Results are denoted with a “B” when the measured 

concentration is less than 10 times the greatest concentration 

detected in any LRB for that compound. In this case, NTA 

concentrations less than 7.0 μg/L, NP1EC concentrations less 

than 2.0 μg/L, NP2EC concentrations less than 1.0 μg/L, and 

total NPEC concentrations less than 10 μg/L were denoted 

with a “B.” In addition, spike recovery percentages less than 

60 percent or more than 150 percent may be indicative of 

matrix or interaction effects, and concentrations in environmental compounds may be similarly over or underestimated.

Five QA/QC duplicate samples were collected during the 

study and analyzed for NTA, EDTA, and NPECs. The largest 

detected percentage difference between the environmental 

sample and the duplicate sample for NTA in samples not 

denoted with a “B” was 0 percent (0 μg/L) for the wastewatertreatment plant effluent on May 21, 2003. The largest detected 

percentage difference between the environmental sample and 

the duplicate sample for EDTA in samples not denoted with a 

“B” was 20 percent (0.1 μg/L) in well W49-9 sample on May 

27, 2003. The largest detected percentage difference between 

the environmental sample and the duplicate sample for NP1EC 

in samples not denoted with a “B” was 17 percent (15 μg/L)

for the wastewater-treatment plant effluent on May 21, 2003. 

The largest detected percentage difference between the 

environmental sample and the duplicate sample for NP2EC in 

samples not denoted with a “B” was 36 percent (25 μg/L)

for the wastewater-treatment plant effluent on May 21, 2003. 

The largest detected percentage difference between the 

environmental sample and the duplicate sample for NP3EC 

in samples not denoted with a “B” was 22 percent (0.7 μg/L) 

for the wastewater-treatment plant effluent on May 21, 2003. 

The largest detected percentage difference between the 

environmental sample and the duplicate sample for NP4EC in 

samples not denoted with a “B” was 25 percent (0.3 μg/L) for 

the wastewater-treatment plant effluent on May 21, 2003. The 

largest detected percentage difference between the environmental sample and the duplicate sample for total NPECs in 

samples not denoted with a “B” was 20 percent (30 μg/L) for 

the wastewater-treatment plant effluent on May 21, 2003.

Among the samples from the wastewater sites, the 

wastewater-treatment plant effluent samples had the highest 

concentrations of each of these compounds. NTA was not 

detected in any of the three samples from the cattle feedlot 

lagoon. Samples from the cattle feedlot lagoons had detections of NP3EC and NP4EC only once, in samples collected 

on August 15, 2002. Surface-water samples from Salt Creek 

had higher concentrations of EDTA and NPECs than samples 

from the Platte River. NTA and NP4EC were not detected in 

samples from the Platte River. NTA was not detected in any 

samples from the ground-water sites. EDTA was detected in 

all samples from all wells, with the highest average concentrations in well W54-10 and lowest average concentrations in 

well W49-9. Low concentrations of EDTA were each detected 

in all samples from the raw water and finished water.

Alkylphenol and Other Wastewater Compounds

Samples were collected for analysis of alkylphenol and 

other wastewater compounds from 3 wastewater sites and 

2 surface-water sites between August 12, 2002, and 

August 15, 2002 (table 13). Three laboratory reagent blanks 

and two laboratory reagent spikes also were analyzed during 

the study for QA/QC purposes.

In a cattle feedlot lagoon sample collected on August 15, 

2002, 12 of 27 compounds from this schedule were detected 

(4-methylphenol; 4-tert-butylphenol; 4-tert-pentylphenol; 

2,6-di-tert-butyl-1,4-benzoquinone; 2,6-di-tert-butyl-4-

methylphenol; 4-(tert-octyl)phenol; 4-nonylphenol; caffeine; 

4-t-octylphenolmonoethoxylate (4-OP1EO); triclosan; 4-toctylphenoldiethoxylate (4-OP2EO); and bisphenol A). In 

a hog confinement lagoon sample collected on August 15, 

2002, 9 of 27 compounds from this schedule were detected 

(4-methylphenol; 4-tert-butylphenol; 4-tert-pentylphenol; 

2,6-di-tert-butylphenol; 2,6-di-tert-butyl-1,4-benzoquinone; 

4-(tert-octyl)phenol; 4-nonylphenol; triclosan; and bisphenol 

A). In a wastewater-treatment plant effluent sample collected 

on August 14, 2002, 19 of 27 compounds from this schedule 

were detected (1,4-dichlorobenzene; 1,2-dichlorobenzene; 

4-methylphenol; 4-tert-butylphenol; 4-tert-pentylphenol; 

2,6-di-tert-butylphenol; 2,6-di-tert-butyl-1,4-benzoquinone; 

2[3]-tert-butyl-4-methylphenol; 4-(tert-octyl)phenol; 4-nonylphenol; caffeine; 4-OP1EO; 4-nonylphenolmonoethoxylate (4-

NP1EO); triclosan; bisphenol A; 4-nonylphenoldiethoxylate 

(4-NP2EO); 4-t-octylphenoltriethoxylate (4-OP3EO); 4-nonylphenoltriethoxylate (4-NP3EO); and 4-nonylphenoltetraethoxylate (4-NP4EO)). In a sample collected from the Platte River 

on August 12, 2002, 7 of 27 compounds from this schedule 
10 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

were detected (2,6-di-tert-butylphenol; 2,6-di-tert-butyl-1,4-

benzoquinone; 4-(tert-octyl)phenol; 4-nonylphenol; 4-OP1EO; 

bisphenol A; and triclosan). In a sample collected from Salt 

Creek on August 13, 2002, 12 of 27 compounds from this 

schedule were detected (4-methylphenol; 4-tert-butylphenol; 

4-tert-pentylphenol; 2,6-di-tert-butyl-1,4-benzoquinone; 

4-(tert-octyl)phenol; 4-nonylphenol; caffeine; 4-OP1EO; 

triclosan; 4-OP2EO; bisphenol A; and 4-OP3EO).

Hormones

Samples for analysis of 20 hormones were collected 

from 3 wastewater sites, 3 surface-water sites, 3 ground-water 

sites, and 2 drinking-water sites (tables 14 and 15). Results 

are denoted with a “B” when the measured concentration is 

less than 10 times the greatest concentration detected in any 

LRB for that compound. Spike recovery percentages less 

than 60 percent or more than 150 percent may be indicative 

of matrix or interaction effects and concentrations in environmental compounds may be similarly over or underestimated.

The hormones 3-ß-coprostanol and cholesterol were 

detected in all samples collected from the three wastewater 

sites (cattle feedlot lagoon, hog confinement lagoon, and 

wastewater-treatment plant effluent). Other hormones detected 

at least once in samples from the wastewater sites included 

cis-androsterone (1/4 samples), stanalone (1/4 samples), 

17-ß-estradiol (2/4 samples), and estriol (1/4 samples) in the 

wastewater-treatment plant effluent, and testosterone in the 

hog confinement lagoon (1/3 samples). Hormones detected 

at least once in samples from the surface-water sites included 

equilin (1/7 samples), equilenin (1/7 samples), and 3-ß-coprostanol (4/7 samples) in the Platte River samples and equilinen 

(1/6 samples), 17-ß-ethynylestradiol, (1/6 samples), and 

3-ß-coprostanol (6/6 samples) in the Salt Creek samples. No 

hormones were detected in samples from the ground-water or 

drinking-water sites.

Stable Hydrogen and Oxygen Isotope 

Ratios

Stable hydrogen and oxygen isotope ratios were 

measured in surface-water and ground-water samples 

(table 16). Stable hydrogen isotope ratios of surface water 

ranged from -63.5 per mill to -48.7 per mill relative to 

VSMOW reference water. Stable oxygen isotope ratios of 

surface water ranged from -8.57 per mill to -6.09 per mill. 

Stable hydrogen isotope ratios of ground water showed 

seasonal variation of -70.4 per mill to -47.6 per mill relative 

to VSMOW reference water. Stable oxygen isotope ratios of 

ground water ranged from -9.42 per mill to -5.84 per mill.

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64 p.
12 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 1. Sites at which samples were collected for analysis during the riverbank filtration study, 

Platte River, Nebraska, 2002 to 2005.

[SW, surface water; GW, ground water; WW, wastewater; DW, drinking water]

Station name Site type Station number

Platte River near Ashland (well field) SW 06801000

Salt Creek near Ashland (well field) SW 06805000

Loup Power Canal (outside well field) SW 412411097165601

W90-1H (well field) GW 410322096191701

W54-10 (well field) GW 410315096193501

W49-9 (well field) GW 410349096202101

W56-5 (well field) GW 410537096202701

Ashland Deep monitoring well (well field) GW 410334096182801

Memphis, G040474 Ithaca (outside well field) GW 410547096254801

Raw Water (well field) DW 410315096190101

Finished Water (well field) DW 410315096190102

Cattle Feedlot Lagoon (outside well field) WW 410322096190103

Hog Confinement Lagoon (outside well field) WW 410322096190104

Wastewater Treatment Plant Effluent (outside well field) WW 06803496

Return to text
Field Water-Quality Properties 13

Table 2. Pharmaceuticals, including common names and general uses, analyzed for in water-quality samples.

[--, none]

Compound Common name Use

1,7-dimethylxanthine -- caffeine metabolite

Acetaminophen Tylenol over-the-counter analgesic

Azithromycin Zithromax antibiotic

Caffeine No-Doz stimulant

Carbamazapine Tegretol management of epilepsy, bipolar disorder

Cimetidine Tagamet acid reducer; prescription and over-the-counter 

Clarithromycin Biaxin antibiotic

Codeine Robitussin AC opiod narcotic; cough suppressant

Cotinine -- nicotine metabolite

Dehydronifedipine -- antianginal

Digoxigenin Lanoxicaps; Lanoxin cardiac stimulant/regulator, digoxin metabolite

Diltiazem Cardizem CD antianginal, antiarrhythmic, and antihypertensive

Diphenhydramine Benadryl antihistamine

Erythromycin E-mycin, Ery-tab, Benzamycin antibiotic

Fluoxetine Prozac antidepressant

Furosemide Lasix diuretic

Gemfibrozil Lopid antihyperlipidemic

Ibuprofen Advil over-the-counter analgesic

Metformin Glucophage antidiabetic

Miconazole Micatin, Monistant antifungal agent

Paroxetine metabolite Paxil antidepressant

Ranitidine Zantac acid reducer; prescription and over-the-counter

Salbutamol Albuterol Aerosol bronchiodilator for asthma

Sulfamethoxazole component of Bactrim antibiotic

Thiabendazole Mintezol treats worm infections

Trimethoprim component of Bactrim antibiotic

Warfarin Coumadin Tabs anticoagulant

Return to text
14 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 3. List of non-pharmaceutical organic compounds analyzed for in water-quality samples by the U.S. Geological Survey National 

Research Program, Boulder Laboratories during the riverbank filtration study, Platte River, Nebraska, including registry numbers, common 

species.

[Surrogate standards (SS) and internal standards (IS) are italicized; CAS#, chemical abstracts registry number; MCL, Maximum Contaminant Level in micrograms per liter (U.S. Environmental Protection Agency, 2002); LC50, lowest lethal concentration for 50 percent of the population of the most sensitive indicator 

species (see footnote 2); studies, number of studies; --, not available; n, normal; t, tert]

Method/compound

Abbreviation used 

in this report CAS# Source/use MCL, LC50/studies

Organic carbon

Dissolved organic carbon DOC -- natural organic matter --, --/0

Total organic carbon TOC -- natural organic matter --, --/0

Ultraviolet light absorption UV254 -- natural organic matter --, --/0

Specific ultraviolet light absorption SUVA -- natural organic matter --, --/0

Nitrilotriacetic acid/ethylenediaminetetraacetic acid/nonylphenolethoxycarboxylates

Nitrilotriacetic acid NTA 139-13-9 metal complexing agent --, --/0

Ethylenediaminetetraacetic acid EDTA 60-00-4 metal complexing agent --, --/0

4-Nonylphenolmonoethoxycarboxylate NP1EC 3115-49-9 surfactant metabolite --, --/0

4-Nonylphenoldiethoxycarboxylate NP2EC 106807-78-7 surfactant metabolite --, --/0

4-Nonylphenoltriethoxycarboxylate NP3EC 1878-68-8 surfactant metabolite --, --/0

4-Nonylphenoltetraethoxycarboxylate NP4EC -- surfactant metabolite --, --/0

4-Bromophenyl acetic acid (SS) BPAA surrogate standard --, --/0

d12 Ethylenediaminetetraacetic acid (IS) D12 EDTA 203806-08-0 internal standard --, --/0

4-n-Nonylphenoldiethoxycarboxylate (SS) nNP2EC -- surrogate standard --, --/0

Wastewater compounds

Bisphenol A BPA 80-05-7 plasticizer --, 13,600/26

4-t-Butylphenol TBP 98-54-4 antioxidant --, --/0

2[3]-t-Butyl-4-methoxyphenol BHA 25013-16-5 antioxidant --, 2

870/14

Caffeine CAFF 58-08-2 stimulant --,--/0

2,6-Di-t-butyl-1,4-benzoquinone DTBB 719-22-2 antioxidant byproduct --, --/0

2,6-Di-t-butyl-4-methylphenol BHT 128-37-0 antioxidant --, 3

1,140/15

2,6-Di-t-butylphenol DTBP 128-39-2 antioxidant --, --/2

1,2-Dichlorobenzene 1,2DCB 95-50-1 fumigant --, --/0

1,3-Dichlorobenzene 1,3DCB 541-73-1 fumigant --, --/0

1,4-Dichlorobenzene 1,4DCB 106-46-7 deodorizer 75,--/--

4-Ethylphenol EP 123-07-9 plasticizer --, --/0

4-Methylphenol MP 106-44-5 disinfectant --, 31,400/74

4-Nonylphenol NP 25154-52-3 surfactant metabolite --, 1130/135

4-Nonylphenolmonoethoxylate NP1EO 9016-45-9 surfactant metabolite --, 314,450/4

4-Nonylphenoldiethoxylate NP2EO -- surfactant metabolite --, 35,500/6

4-Nonylphenoltriethoxylate NP3EO -- surfactant metabolite --, --/0

4-Nonylphenoltetraethoxylate NP4EO -- surfactant metabolite --, --/0

4-n-Octylphenol NOP 1806-26-4 plasticizer --, --/0

4-t-Octylphenol TOP 140-66-9 surfactant metabolite --, --/0

4-t-Octylphenolmonoethoxylate OP1EO 9036-19-5 surfactant metabolite --, --/0

4-t-Octylphenoldiethoxylate OP2EO -- surfactant metabolite --, --/0

4-t-Octylphenoltriethoxylate OP3EO -- surfactant metabolite --, --/0
Pharmaceutical Compounds 15

Method/compound

Abbreviation used 

in this report CAS# Source/use MCL, LC50/studies

Wastewater compounds—continued

4-t-Octylphenoltetraethoxylate OP4EO -- surfactant metabolite --, --/0

4-t-Octylphenolpentaethoxylate OP5EO -- Surfactant metabolite --/--/0

4-t-Pentylphenol TPP 80-46-6 plasticizer --, --/0

4-Propylphenol PP 645-56-7 plasticizer --, --/0

Triclosan TRI 3380-34-5 antimicrobial --, 1180/3

D6-Bisphenol A (SS) D6 BPA 86588-58-1 surrogate standard --, --/0

D21-2,6-Di-t-butyl-4-methylphenol (SS) D21 BHT 64502-99-4 surrogate standard --, --/0

4-n-Nonylphenol (SS) nNP 104-40-5 surrogate standard --, --/0

4-n-Nonylphenolmonoethoxylate (SS) nNP1EO -- surrogate standard --, --/0

4-n-Nonylphenoldiethoxylate (SS) nNP2EO -- surrogate standard --, --/0

Hormones/steroids

cis-Androsterone AND 53-41-8 urinary steroid --, --/0

4-Androstene-3,17-dione ANDD 63-05-8 androgen hormone --, --/0

Cholesterol CHO 57-88-5 animal steroid --, --/0

3-ß-Coprostanol COP 360-68-9 animal fecal steroid --, --/0

Diethylstilbesterol DES 56-53-1 synthetic estrogen --, --/0

Epitestosterone ETES 481-30-1 androgen hormone --, --/0

Equilenin EQUI 517-09-9 estrogen replacement --, --/0

Equilin EQUN 474-86-2 estrogen replacement --, --/0

17-α-Estradiol AE2 57-91-0 reproductive hormone --, --/0

17-ß-Estradiol BE2 50-28-2 reproductive hormone --, --/0

Estriol E3 50-27-1 reproductive hormone --, --/0

Estrone E1 53-16-7 reproductive hormone --, --/11

17-α-Ethynylestradiol EE2 57-63-6 ovulation inhibitor --, --/22

11-Ketotestosterone KTES 564-35-2 androgen hormone --, --/0

Mestranol MES 72-33-3 ovulation inhibitor --, --/0

19-Norethisterone NOR 68-22-4 ovulation inhibitor --, --/0

Progesterone PRO 57-83-0 reproductive hormone --, --/0

Stanalone STA 521-18-6 androgen hormone --, --/0

Testosterone TES 58-22-0 reproductive hormone --, --/4

Trenbolone TRE 10161-33-8 growth promoter --, --/0

d4-17-ß-Estradiol (SS) D4 E2 66789-03-5 surrogate standard --, --/0

d3-Testosterone (SS) D3 TES 77546-39-5 surrogate standard --, --/0

d7-Cholesterol (SS) D7 CHO 83199-47-7 surrogate standard --, --/0

1

Pimephales promelas (fathead minnow), 96-hour exposure (U.S. Environmental Protection Agency, 2002)

2

Oncorhyncchus mykiss (rainbow trout), 96-hour exposure (U.S. Environmental Protection Agency, 2001)

3

Daphnia magna (water flea), 48-hour exposure (U.S. Environmental Protection Agency, 2001)

Return to text

Table 3. List of non-pharmaceutical organic compounds analyzed for in water-quality samples by the U.S. Geological Survey 

National Research Program, Boulder Laboratories during the riverbank filtration study, Platte River, Nebraska, including registry 

numbers, common sources/uses, and their Maximum Contaminant Level or lowest lethal concentration for 50 percent of the most 

sensitive indicator species.—Continued
16 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 4. List of non-pharmaceutical target compounds and ions (presented in order of relative 

chromatographic elution) used in selected ion monitoring (SIM) gas chromatography/mass 

spectrometry (GC/MS) analysis.

[See table 3 for compound abbreviations. Surrogate standards (SS) are shown in bold italics; internal standards 

(IS) are shown in italics; M+, molecular ion; Tgt, target ion used for quantitation; Q1, first qualifier ion; Q2, 

second qualifier ion; Q3, third qualifier ion; --, not applicable]

Compound abbreviations M+ Tgt Q1 Q2 Q3

Nitrilotriacetic acid/Ethylenediaminetetraacetic acid/Nonylphenolethoxycarboxylates

(propyl ester derivatives)

C9 Benzene (IS) 204 92 204 133 --

4-Bromophenyl acetic acid (SS) 257 171 257 90 --

NTA 317 317 230 144 --

NP1EC 320 249 320 235 --

NP2EC 364 103 364 293 --

nNP2EC (SS) 364 103 364 145 --

D12 EDTA (IS) 472 236 472 150 --

EDTA 460 460 230 144 --

NP3EC 408 323 408 103 --

NP4EC 452 367 452 103 --

Wastewater compounds

1,3DCB 146 146 111 75 --

D4-1,4-Dichlorobenzene (IS) 151 115 151 78 --

1,4DCB 146 146 111 75 --

1,2DCB 146 146 111 75 --

MP 108 108 107 77 --

EP 122 107 122 77 --

D8-Napthalene (IS) 136 136 108 68 --

PP 136 107 136 77 --

TBP 150 135 150 107 --

TPP 164 135 164 107 --

DTBP 206 191 206 57 --

DTBB 220 177 220 135 --

D10-Acenaphthene (IS) 164 164 162 80 --

BHA 180 165 180 137 --

D21 BHT (SS) 240 222 240 66 --

BHT 220 205 220 57 --

TOP 206 135 206 107 --

NP 220 135 220 107 --

NOP 206 107 206 77 --

D10-Phenanthrene (IS) 188 188 160 80 --

CAFF 194 194 109 82 --

OP1EO 250 179 250 135 --

nNP (SS) 220 107 220 77 --

NP1EO 264 179 264 193 --

TRI 289 218 289 145 --

nNP1EO (SS) 264 107 264 151 --
Pharmaceutical Compounds 17

Table 4. List of non-pharmaceutical target compounds and ions (presented in order of relative 

chromatographic elution) used in selected ion monitoring (SIM) gas chromatography/mass 

spectrometry (GC/MS) analysis.—Continued

Compound abbreviations M+ Tgt Q1 Q2 Q3

Wastewater compounds—continued

OP2EO 294 135 294 223 --

D6 BPA (SS) 234 216 234 121 --

BPA 228 213 228 119 --

NP2EO 308 135 308 223 --

nNP2EO (SS) 308 107 308 195 --

OP3EO 338 267 338 135 --

D12-Chrysene (IS) 240 240 236 120 --

NP3EO 352 281 352 267 --

OP4EO 382 135 382 311 --

NP4EO 3,962 325 396 311 --

OP5EC 426 355 426 135 --

Hormones/steroids (MOX/TMS derivatives)

D12-Chrysene (IS) 240 240 236 120 --

Triphenylene (IS) 228 228 113 226 --

DES 413 413 383 397 217

AND 392 270 391 360 300

AE2 416 285 416 326 401

ETES 390 390 358 268 374

D4 E2 (SS) 420 420 330 329 273

STA 392 392 376 360 286

BE2 416 416 285 326 401

E1 371 371 323 312 340

EQUN 367 367 279 352 337

D3 TES (SS) 393 393 361 271 377

TES 390 390 358 268 281

ANDD 345 345 313 329 367

MES 382 367 382 227 242

TRE 372 372 266 240 281

NOR 399 384 399 259 209

EQUIN 369 369 354 338 229

EE2 440 425 440 285 300

D12-Perylene (IS) 264 264 260 132 --

KTES 404 404 372 388 359

E3 504 311 504 345 386

PRO 372 372 341 286 100

COP 460 370 460 355 257

D7 CHO (SS) 465 336 465 375 360

CHO 458 329 458 368 353

Return to text
18 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 5. Monthly pumpage from vertical wells W49-9, W54-10, and W56-5 during the riverbank filtration study, Platte River, Nebraska, 

2001 to 2005.

[MG, millions of gallons]

Pumpage, in MG

Month and Year W49-9 W54-10 W56-5

Nov-2001 16.045 27.975 0.014

Dec-2001 27.744 88.905 2.541

Jan-2002 18.269 52.898 20.336

Feb-2002 33.699 77.728 2.096

Mar-2002 28.458 62.897 3.963

Apr-2002 30.429 35.922 1.881

May-2002 29.934 100.629 9.041

Jun-2002 40.661 108.557 30.800

Jul-2002 25.908 91.532 40.369

Aug-2002 28.870 109.238 43.122

Sep-2002 25.480 91.304 29.687

Oct-2002 23.087 97.632 3.617

Nov-2002 38.464 68.811 29.413

Dec-2002 49.136 79.062 51.565

Jan-2003 3.936 51.475 25.318

Feb-2003 0 101.201 .003

Mar-2003 0 88.578 .004

Apr-2003 27.280 46.493 16.449

May-2003 22.993 20.326 9.563

Jun-2003 16.048 45.518 22.766

Jul-2003 31.866 68.918 34.587

Pumpage, in MG

Month and Year W49-9 W54-10 W56-5

Aug-2003 24.958 97.190 39.280

Sep-2003 10.747 66.418 30.570

Oct-2003 21.925 81.605 21.712

Nov-2003 24.278 98.576 8.598

Dec-2003 41.145 103.161 17.805

Jan-2004 47.838 103.060 31.881

Feb-2004 25.550 93.194 49.427

Mar-2004 7.638 66.950 24.938

Apr-2004 3.349 40.703 10.498

May-2004 15.333 73.240 13.007

Jun-2004 10.877 56.062 9.231

Jul-2004 22.742 72.650 6.777

Aug-2004 28.548 63.030 10.474

Sep-2004 18.567 79.938 41.770

Oct-2004 8.582 87.999 6.274

Nov-2004 12.176 114.170 26.383

Dec-2004 9.629 59.115 24.310

Jan-2005 13.220 111.731 57.447

Minimum 0 20.326 0.003

Mean 22.190 76.523 20.706

Median 23.087 79.062 20.336

Maximum 49.136 114.170 57.447

Return to text
Pharmaceutical Compounds 19

Table 6. Field properties measured for all samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.

[μS/cm, microsiemens per centimeter; °C, degrees Celsius; mg/L, milligrams per liter; NTU, nephelometric turbidity units; nm, no measurement]

Station number Station name Date Time

Specific 

conductance 

(μS/cm)

Temperature

pH

Dissolved 

oxygen 

(mg/L)

Turbidity 

(NTU)

Air

(oC)

Water 

(oC)

06801000 Platte River near 

Ashland

4/19/04 0930 432 11.5 13.6 8.81 6.42 46.3

5/10/04 1030 400 23.5 23.0 8.97 5.64 50.3

9/14/04 0930 397 22.2 23.4 8.50 5.37 72.5

11/15/04 1030 390 10.0 8.6 8.09 7.10 65.9

1/10/05 1130 575 .0 .3 8.13 9.83 3.89

410322096191701 W90-1H 4/20/04 1210 463 23.8 7.1 7.80 3.77 --

9/14/04 1220 424 30.6 19.8 7.57 .23 .24

11/16/04 1240 424 14.3 17.0 7.80 1.48 .15

1/11/05 1700 448 -2.2 8.9 8.06 8.93 .18

410315096193501 W54-10 4/20/04 1625 405 24.4 5.9 8.10 6.08 --

9/15/04 1330 373 24.0 22.3 7.73 .13 --

11/16/04 1345 326 14.3 17.2 7.88 2.22 .14

1/11/05 1430 360 -5.0 12.5 8.03 5.06 .10

410349096202101 W49-9 4/20/04 1425 533 24.4 14.3 7.36 3.36 --

9/16/04 1130 507 22.5 15.3 7.26 1.12 --

11/16/04 1540 523 14.3 14.0 7.32 .73 .12

1/11/05 1625 482 -5.0 18.2 7.43 2.51 .20

410537096202701 W56-5 4/20/04 1525 404 24.4 5.7 7.95 3.01 --

9/15/04 1420 367 24.0 19.1 7.47 .08 --

11/16/04 1445 329 14.3 19.2 7.73 .33 .15

1/11/05 1545 376 -5.0 12.1 7.93 3.85 .20

410334096182801 Ashland Deep 4/20/04 1110 470 21.0 12.6 7.58 .19 --

9/15/04 1230 487 24.0 12.8 7.49 .46 --

11/16/04 1540 492 14.3 12.6 7.56 .69 6.45

1/11/05 1320 469 -5.0 12.4 7.63 .27 1.57

410315096190102 Finished water 4/20/04 1700 491 24.4 18.0 7.76 6.44 --

9/15/04 1515 450 24.0 20.4 7.34 8.00 --

11/16/04 1615 412 14.3 18.7 7.56 3.53 --

1/11/05 1740 457 -5.0 14.5 7.62 8.98 .21

Return to text
20 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 7. Summary statistics of pharmaceuticals in supplementary samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005. [All concentrations in micrograms per liter; summary statistics based upon detected concentrations (excluding samples where concentration was less than 10 times the laboratory blank detection as denoted by “B” in table 8); LRL, Laboratory reporting level ; n, number of samples; det, number of detections; max, maximum; med, median; std. dev., standard deviation; E, estimated; na, not applicable; nd, not deter- mined]Constituent LRL 06801000 Platte River near Ashland 410322096191701 Well W90-1H 410315096193501 Well W54-10

n det max med mean

std. 

dev. n det max med mean

std. 

dev. n det max med mean

std. 

dev.

1,7-Dimethylxanthine 0.144 5 1 E0.027 E0.027 E0.027 na 4 0 na na na na 4 1 E0.030 E0.030 E0.030 naAcetaminophen .036 5 2 .061 .052 .052 0.013 4 0 na na na na 4 0 na na na naAzithromycin .004 5 0 na na na na 4 0 na na na na 4 0 na na na naCaffeine .016 5 1 .052 .052 .052 na 4 0 na na na na 4 0 na na na naCarbamazapine .011 5 1 E.002 E.002 E.002 na 4 1 E0.003 E0.003 E0.003 na 4 0 na na na naCimetidine .012 5 0 na na na na 4 0 na na na na 4 0 na na na naClarithromycin nd 0 0 na na na na 0 0 na na na na 0 0 na na na naCodeine .015 5 0 na na na na 4 0 na na na na 4 0 na na na naCotinine .014 5 2 E.010 E.009 E.009 E.002 4 0 na na na na 4 0 na na na naDehydronifedipine .015 5 0 na na na na 4 0 na na na na 4 0 na na na naDigoxigenin nd 0 0 na na na na 0 0 na na na na 0 0 na na na naDiltiazem .016 5 0 na na na na 4 0 na na na na 4 0 na na na naDiphenhydramine .015 5 0 na na na na 4 0 na na na na 4 0 na na na naErythromycin .009 5 0 na na na na 4 0 na na na na 4 0 na na na naFluoxetine .014 5 0 na na na na 4 0 na na na na 4 0 na na na naFurosemide nd 5 0 na na na na 4 0 na na na na 4 0 na na na naGemfibrozil .013 5 0 na na na na 4 0 na na na na 4 0 na na na naIbuprofen .042 5 0 na na na na 4 0 na na na na 4 0 na na na naMetformin nd 5 0 na na na na 4 0 na na na na 4 0 na na na naMiconazole .018 5 0 na na na na 4 0 na na na na 4 0 na na na naParoxetine metabolite nd 0 0 na na na na 0 0 na na na na 0 0 na na na naRanitidine .013 5 0 na na na na 4 0 na na na na 4 0 na na na naSalbutamol .023 5 0 na na na na 4 0 na na na na 4 0 na na na naSulfamethoxazole .064 5 0 na na na na 4 0 na na na na 4 0 na na na naThiabendazole .011 5 0 na na na na 4 0 na na na na 4 0 na na na naTrimethoprim .013 5 0 na na na na 4 0 na na na na 4 0 na na na naWarfarin .012 5 0 na na na na 4 0 na na na na 4 0 na na na na
Pharmaceutical Compounds 21

Table 7. Summary statistics of pharmaceuticals in supplementary samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued

Constituent LRL

410349096202101

Well W49-9

410537096202701

Well W56-5

n det max med mean

std. 

dev. n det max med mean

std. 

dev.

1,7-Dimethylxanthine 0.144 4 0 na na na na 4 1 E0.034 E0.034 E0.034 naAcetaminophen .036 4 1 E0.0004 E0.0004 E0.0004 na 4 1 E.012 E.012 E.012 naAzithromycin .004 4 0 na na na na 4 0 na na na naCaffeine .016 4 0 na na na na 4 0 na na na naCarbamazapine .011 4 1 E.007 E.007 E.007 na 4 2 E.007 E.004 E.004 E.004Cimetidine .012 4 0 na na na na 4 0 na na na naClarithromycin nd 0 0 na na na na 0 0 na na na naCodeine .015 4 0 na na na na 4 0 na na na naCotinine .014 4 0 na na na na 4 0 na na na naDehydronifedipine .015 4 0 na na na na 4 0 na na na naDigoxigenin nd 0 0 na na na na 0 0 na na na naDiltiazem .016 4 0 na na na na 3 0 na na na naDiphenhydramine .015 4 0 na na na na 3 0 na na na naErythromycin .009 4 0 na na na na 4 0 na na na naFluoxetine .014 4 0 na na na na 4 0 na na na naFurosemide nd 4 0 na na na na 4 0 na na na naGemfibrozil .013 4 0 na na na na 4 0 na na na naIbuprofen .042 4 0 na na na na 4 0 na na na naMetformin nd 4 0 na na na na 4 0 na na na naMiconazole .018 4 0 na na na na 4 0 na na na naParoxetine metabolite nd 0 0 na na na na 0 0 na na na naRanitidine .013 4 0 na na na na 4 0 na na na naSalbutamol .023 4 0 na na na na 4 0 na na na naSulfamethoxazole .064 4 0 na na na na 4 0 na na na naThiabendazole .011 4 0 na na na na 4 0 na na na naTrimethoprim .013 4 0 na na na na 4 1 E.008 E.008 E.008 naWarfarin .012 4 0 na na na na 4 0 na na na na
22 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 7. Summary statistics of pharmaceuticals in supplementary samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued Constituent LRL 410334096182801 Ashland Deep 410315096190102 Finished water

n det max med mean

std.

dev. n det max med mean

std.

dev.

1,7-Dimethylxanthine 0.144 4 0 na na na na 4 0 na na na naAcetaminophen .036 4 0 na na na na 4 0 na na na naAzithromycin .004 4 0 na na na na 4 0 na na na naCaffeine .016 4 0 na na na na 4 0 na na na naCarbamazapine .011 4 1 E0.001 E0.001 E0.001 na 4 1 E0.002 E0.002 E0.002 naCimetidine .012 4 0 na na na na 4 0 na na na naClarithromycin nd 0 0 na na na na 0 0 na na na naCodeine .015 4 0 na na na na 4 0 na na na naCotinine .014 4 0 na na na na 4 0 na na na naDehydronifedipine .015 4 0 na na na na 4 0 na na na naDigoxigenin nd 0 0 na na na na 0 0 na na na naDiltiazem .016 4 0 na na na na 4 0 na na na naDiphenhydramine .015 4 0 na na na na 4 0 na na na naErythromycin .009 4 0 na na na na 4 0 na na na naFluoxetine .014 4 0 na na na na 4 0 na na na naFurosemide nd 4 0 na na na na 4 0 na na na naGemfibrozil .013 4 0 na na na na 4 0 na na na naIbuprofen .042 4 0 na na na na 4 0 na na na naMetformin nd 4 0 na na na na 4 0 na na na naMiconazole .018 4 0 na na na na 4 0 na na na naParoxetine metabolite nd 0 0 na na na na 0 0 na na na naRanitidine .013 4 0 na na na na 4 0 na na na naSalbutamol .023 4 0 na na na na 4 0 na na na naSulfamethoxazole .064 4 0 na na na na 4 0 na na na naThiabendazole .011 4 0 na na na na 4 0 na na na naTrimethoprim .013 4 0 na na na na 4 0 na na na naWarfarin .012 4 0 na na na na 4 0 na na na na

Return to text
Pharmaceutical Compounds 23

Table 8. Pharmaceutical data for samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.[All units are in micrograms per liter; nd, not determined; --, constituent not analyzed; <, less than; E, estimated quantity below laboratory reporting level but above method detection limit; B, detected in blank, level <10X blank detection; nondetect, constituent not detected and laboratory reporting level not determined]

Station number Station name Date Time

1,7-dimethylxanthine Acetamino- phen Azithromycin Caffeine Carbama- zapine Cimetidine Clarithromycin

Laboratory reporting level --> 0.144 0.036 0.004 0.016 0.011 0.012 nd6801000 Platte River near 

Ashland

4/19/04 0930 <0.144 <0.036 <0.004 <0.016 <0.011 <0.012 --5/10/04 1030 E.027 .042 <.004 .052 <.011 <.012 --9/14/04 0930 <.144 <.036 <.004 <.016 <.011 <.012 --11/15/04 1030 <.144 <.036 <.004 <.016 E.002 <.012 --1/10/05 1130 <.144 .061 <.004 <.016 <.011 <.012 --

410322096191701 W90-1H 4/20/04 1210 <.144 <.036 <.004 <.016 <.011 <.012 --

9/14/04 1220 <.144 <.036 <.004 <.016 <.011 <.012 --11/16/04 1240 <.144 <.036 <.004 <.016 <.011 <.012 --1/18/05 1700 <.144 <.036 <.004 <.016 E.003 <.012 --

410315096193501 W54-10 4/20/04 1625 E.030 <.036 <.004 <.016 <.011 <.012 --

9/15/04 1330 <.144 <.036 <.004 <.016 <.011 <.012 --11/16/04 1345 <.144 <.036 <.004 <.016 <.011 <.012 --1/11/05 1430 <.144 <.036 <.004 <.016 <.011 <.012 --

410349096202101 W49-9 4/20/04 1425 <.144 <.036 <.004 <.016 <.011 <.012 --

9/16/04 1130 <.144 <.036 <.004 <.016 <.011 <.012 --11/16/04 1540 <.144 E.0004 <.004 <.016 <.011 <.012 --1/11/05 1625 <.144 <.036 <.004 <.016 E.007 <.012 --

410537096202701 W56-5 4/20/04 1525 E.034 E.012 <.004 <.016 <.011 <.012 --

9/15/04 1420 <.144 <.036 <.004 <.016 <.011 <.012 --11/16/04 1445 <.144 <.036 <.004 <.016 E.001 <.012 --1/11/05 1545 <.144 <.036 <.004 <.016 E.007 <.012 --

410334096182801 Ashland Deep 4/20/04 1110 <.144 <.036 <.004 <.016 <.011 <.012 --

9/15/04 1230 <.144 <.036 <.004 <.016 <.011 <.012 --11/16/04 1540 <.144 <.036 <.004 <.016 E.001 <.012 --1/11/05 1320 <.144 <.036 <.004 <.016 <.011 <.012 --
24 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Station number Station name Date Time 1,7-dimethyl- xanthine Acetamino- phen Azithromycin Caffeine Carbama- zapine Cimetidine Clarithromycin Laboratory reporting level --> 0.144 0.036 0.004 0.016 0.011 0.012 nd 410315096190102 Finished water 4/20/04 1700 <0.144 <0.036 <0.004 <0.016 <0.011 <0.012 -- 9/15/04 1515 <.144 <.036 <.004 <.016 <.011 <.012 -- 11/16/04 1615 <.144 <.036 <.004 <.016 E.002 <.012 -- 1/11/05 1740 <.144 <.036 <.004 <.016 <.011 <.012 -- Duplicates 6801000 Platte River near Ashland 1/10/05 1140 <.144 <.036 <.004 <.016 <0.011 <.012 -- Station number Station name Date Time Codeine Cotinine Dehydronife- dipine Digoxigenin Diltiazem Diphenhy- dramine Erythromycin Laboratory reporting level --> 0.015 0.014 0.015 nd 0.016 0.015 0.009 6801000 Platte River near Ashland 4/19/04 0930 <0.015 <0.014 <0.015 -- <0.016 <0.015 <0.009 5/10/04 1030 <.015 <.014 <.015 -- <.016 <.015 <.009 9/14/04 0930 <.015 E.010 <.015 -- <.016 <.015 <.009 11/15/04 1030 <.015 <.014 <.015 -- <.016 <.015 <.009 1/10/05 1130 <.015 E.007 <.015 -- <.016 <.015 <.009 410322096191701 W90-1H 4/20/04 1210 <.015 <.014 <.015 -- <.016 <.015 <.009 9/14/04 1220 <.015 <.014 <.015 -- <.016 <.015 <.009 11/16/04 1240 <.015 <.014 <.015 -- <.016 <.015 <.009 1/18/05 1700 <.015 0.014 <.015 -- <.016 <.015 <.009 410315096193501 W54-10 4/20/04 1625 <.015 <.014 <.015 -- <.016 <.015 <.009 9/15/04 1330 <.015 <.014 <.015 -- <.016 <.015 <.009 11/16/04 1345 <.015 <.014 <.015 -- <.016 <.015 <.009 1/11/05 1430 <.015 <.014 <.015 -- <.016 <.015 <.009

410349096202101 W49-9 4/20/04 1425 <.015 <.014 <.015 -- <.016 <.015 <.009

9/16/04 1130 <.015 <.014 <.015 -- <.016 <.015 <.00911/16/04 1540 <.015 <.014 <.015 -- <.016 <.015 <.0091/11/05 1625 <.015 <.014 <.015 -- <.016 <.015 <.009

Table 8. Pharmaceutical data for samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
Pharmaceutical Compounds 25

Station number Station name Date Time Codeine Cotinine

Dehydronifedipine Digoxigenin Diltiazem Diphenhy- dramine Erythromycin

Laboratory reporting level --> 0.015 0.014 0.015 nd 0.016 0.015 0.009410537096202701 W56-5 4/20/04 1525 <0.015 <0.014 <0.015 -- <0.016 <0.015 <0.009

9/15/04 1420 <.015 <.014 <.015 -- <.016 <.015 <.00911/16/04 1445 <.015 <.014 <.015 -- B.009 B.016 <.0091/11/05 1545 <.015 <.014 <.015 -- <.016 <.015 <.009

410334096182801 Ashland Deep 4/20/04 1110 <.015 <.014 <.015 -- <.016 <.015 <.009

9/15/04 1230 <.015 <.014 <.015 -- <.016 <.015 <.00911/16/04 1540 <.015 <.014 <.015 -- <.016 <.015 <.0091/11/05 1320 <.015 <.014 <.015 -- <.016 <.015 <.009

410315096190102 Finished water 4/20/04 1700 <.015 <.014 <.015 -- <.016 <.015 <.009

9/15/04 1515 <.015 <.014 <.015 -- <.016 <.015 <.00911/16/04 1615 <.015 <.014 <.015 -- <.016 <.015 <.0091/11/05 1740 <.015 <.014 <.015 -- <.016 <.015 <.009

Duplicates6801000 Platte River near 

Ashland

1/10/05 1140 <.015 <.014 <.015 -- <.016 <.015 <.009

Station number Station name Date Time Fluoxetine Furosemide Gemfibrozil Ibuprofen Metformin Miconazole

Paroxetine 

metabolite

Laboratory reporting level --> 0.014 nd 0.013 0.042 nd 0.018 nd6801000 Platte River near 

Ashland

4/19/04 0930 <0.014 nondetect <0.013 <0.042 nondetect <0.018 --5/10/04 1030 <.014 nondetect <.013 <.042 nondetect <.018 --9/14/04 0930 <.014 nondetect <.013 <.042 nondetect <.018 --11/15/04 1030 <.014 nondetect <.013 <.042 nondetect <.018 --1/10/05 1130 <.014 nondetect <.013 <.042 nondetect <.018 --

410322096191701 W90-1H 4/20/04 1210 <.014 nondetect <.013 <.042 nondetect <.018 --

9/14/04 1220 <.014 nondetect <.013 <.042 nondetect <.018 --11/16/04 1240 <.014 nondetect <.013 <.042 nondetect <.018 --1/18/05 1700 <.014 nondetect <.013 <.042 nondetect <.018 --

410315096193501 W54-10 4/20/04 1625 <.014 nondetect <.013 <.042 nondetect <.018 --

9/15/04 1330 <.014 nondetect <.013 <.042 nondetect <.018 --11/16/04 1345 <.014 nondetect <.013 <.042 nondetect <.018 --1/11/05 1430 <.014 nondetect <.013 <.042 nondetect <.018 --

Table 8. Pharmaceutical data for samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
26 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Station number Station name Date Time Fluoxetine Furosemide Gemfibrozil Ibuprofen Metformin Miconazole Paroxetine metabolite Laboratory reporting level --> 0.014 nd 0.013 0.042 nd 0.018 nd 410349096202101 W49-9 4/20/04 1425 <0.014 nondetect <0.013 <0.042 nondetect <0.018 -- 9/16/04 1130 <.014 nondetect <.013 <.042 nondetect <.018 -- 11/16/04 1540 <.014 nondetect <.013 <.042 nondetect <.018 -- 1/11/05 1625 <.014 nondetect <.013 <.042 nondetect <.018 -- 410537096202701 W56-5 4/20/04 1525 <.014 nondetect <.013 <.042 nondetect <.018 -- 9/15/04 1420 <.014 nondetect <.013 <.042 nondetect <.018 -- 11/16/04 1445 <.014 nondetect <.013 <.042 nondetect <.018 -- 1/11/05 1545 <.014 nondetect <.013 <.042 nondetect <.018 -- 410334096182801 Ashland Deep 4/20/04 1110 <.014 nondetect <.013 <.042 nondetect <.018 -- 9/15/04 1230 <.014 nondetect <.013 <.042 nondetect <.018 -- 11/16/04 1540 <.014 nondetect <.013 <.042 nondetect <.018 -- 1/11/05 1320 <.014 nondetect <.013 <.042 nondetect <.018 -- 410315096190102 Finished water 4/20/04 1700 <.014 nondetect <.013 <.042 nondetect <.018 -- 9/15/04 1515 <.014 nondetect <.013 <.042 nondetect <.018 -- 11/16/04 1615 <.014 nondetect <.013 <.042 nondetect <.018 -- 1/11/05 1740 <.014 nondetect <.013 <.042 nondetect <.018 -- Duplicates 6801000 Platte River near Ashland 1/10/05 11:40 B.021 nondetect <.013 <.042 nondetect <.018 -- Station number Station name Date Time Ranitidine Salbutamol Sulfameth- oxazole Thiabendazole Trimethoprim Warfarin Laboratory reporting level --> 0.013 0.023 0.064 0.011 0.013 0.012 6801000 Platte River near Ashland 4/19/04 0930 <0.013 <0.023 <0.064 <0.011 <0.013 <0.012 5/10/04 1030 <.013 <.023 <.064 <.011 <.013 <.012

9/14/04 0930 <.013 <.023 <.064 <.011 <.013 <.01211/15/04 1030 <.013 <.023 <.064 <.011 <.013 <.0121/10/05 1130 <.013 <.023 <.064 <.011 <.013 <.012

410322096191701 W90-1H 4/20/04 1210 <.013 <.023 <.064 <.011 <.013 <.012

9/14/04 1220 <.013 <.023 <.064 <.011 <.013 <.01211/16/04 1240 <.013 <.023 <.064 <.011 <.013 <.0121/18/05 1700 <.013 <.023 <.064 <.011 <.013 <.012

Table 8. Pharmaceutical data for samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
Pharmaceutical Compounds 27

Station number Station name Date Time Ranitidine Salbutamol

Sulfamethoxazole Thiabendazole Trimethoprim Warfarin

Laboratory reporting level --> 0.013 0.023 0.064 0.011 0.013 0.012410315096193501 W54-10 4/20/04 1625 <0.013 <0.023 <0.064 <0.011 <0.013 <0.012

9/15/04 1330 <.013 <.023 <.064 <.011 <.013 <.01211/16/04 1345 <.013 <.023 <.064 <.011 <.013 <.0121/11/05 1430 <.013 <.023 <.064 <.011 <.013 <.012

410349096202101 W49-9 4/20/04 1425 <.013 <.023 <.064 <.011 <.013 <.012

9/16/04 1130 <.013 <.023 <.064 <.011 <.013 <.01211/16/04 1540 <.013 <.023 <.064 <.011 <.013 <.0121/11/05 1625 <.013 <.023 <.064 <.011 <.013 <.012

410537096202701 W56-5 4/20/04 1525 <.013 <.023 <.064 <.011 <.013 <.012

9/15/04 1420 <.013 <.023 <.064 <.011 <.013 <.01211/16/04 1445 <.013 <.023 <.064 <.011 E.008 <.0121/11/05 1545 <.013 <.023 <.064 <.011 <.013 <.012

410334096182801 Ashland Deep 4/20/04 1110 <.013 <.023 <.064 <.011 <.013 <.012

9/15/04 1230 <.013 <.023 <.064 <.011 <.013 <.01211/16/04 1540 <.013 <.023 <.064 <.011 <.013 <.0121/11/05 1320 <.013 <.023 <.064 <.011 <.013 <.012

410315096190102 Finished water 4/20/04 1700 <.013 <.023 <.064 <.011 <.013 <.012

9/15/04 1515 <.013 <.023 <.064 <.011 <.013 <.01211/16/04 1615 <.013 <.023 <.064 <.011 <.013 <.0121/11/05 1740 <.013 <.023 <.064 <.011 <.013 <.012

Duplicates6801000 Platte River near 

Ashland

1/10/05 11:40 <.013 <.023 <.064 <.011 <.013 <.012

Table 8.Return to text

 Pharmaceutical data for samples collected during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
28 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005. [All units are in micrograms per liter; nd, not determined; --, constituent not analyzed, or no comments; ccv, continuing calibration verification; <, less than; E, estimated quantity below Laboratory reporting level but above method detection limit; nondetect, constituent not detected and Laboratory reporting level not determined; CRFM, compound removed from method] Sampled station name(s) Sample type Sampling trip date 1,7-dimethyl- xanthine Acetamino- phen Azithro- mycin Caffeine Caffeine13C surrogate Carbama- zapine Cimetidine Clarithro- mycin Laboratory reporting level --> 0.144 0.036 0.004 0.016 nd 0.011 0.012 nd Platte River near Ashland Set blank 4/19, 4/20/2004 <0.144 <0.036 <0.004 <0.016 nd <0.011 <0.012 nd W90-1H Set spike 4/19, 4/20/2004 .615 .41 .0637 .51 nd .490 .09 nd Spike percentage recovery 4/19, 4/20/2004 110 74 11 91 0 88 16 0 0.10 ccv 4/19, 4/20/2004 E.117 .12 .08 .10 nd .11 .10 nd Comments 4/19, 4/20/2004 -- -- -- -- CRFM -- -- CRFM W49-9 Set blank 4/20/04 <.144 <.036 <.004 <.016 nd <.011 <.012 nd W56-5 Set spike 4/20/04 .59 .4 .1 0.45 nd .45 .13 nd W54-10 Spike percentage recovery 4/20/04 104 73 17 79 0 79 23 0 Ashland Deep 0.10 ccv 4/20/04 E.142 .14 .09 0.11 nd .11 .10 nd Finished water Comments 4/20/04 -- -- -- -- CRFM -- -- CRFM Platte River near Ashland Set blank 5/10/04 <.144 <.036 <.004 <.016 nd <.011 <.012 nd Set spike 5/10/04 .609 .47 <.004 0.49 nd .53 0.09 nd Spike percentage recovery 5/10/04 111 85 0 90 0 96 17 0 0.10 ccv 5/10/04 E.102 .12 .1 0.10 nd .11 .11 nd Comments 5/10/04 -- -- -- -- CRFM -- -- CRFM Platte River near Ashland Set blank 9/14, 9/15/2004 <.144 <.036 <.004 <.016 nd <.011 <.012 nd W90-1H Set spike 9/14, 9/15/2004 .459 .368 .053 0.596 nd .62 .171 nd

W56-5 Spike percentage 

recovery

9/14, 9/15/2004 90 72 10 118 0 122 34 0

W54-10 0.10 ccv 9/14, 9/15/2004 E.078 .10 .1 0.10 nd 0.10 .11 ndAshland Deep Comments 9/14, 9/15/2004 -- -- -- -- CRFM -- -- CRFMFinished water
Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued

Pharmaceutical Compounds 29

Sampled station 

name(s) Sample type

Sampling trip 

date

1,7-dimethylxanthine Acetamino- phen Azithro- mycin Caffeine Caffeine13C surrogate Carbama- zapine Cimetidine Clarithro- mycin

Laboratory reporting level --> 0.144 0.036 0.004 0.016 nd 0.011 0.012 ndW49-9 Set blank 9/16/04 <0.144 <0.036 <0.004 <0.016 nd <0.011 <0.012 nd

Set spike 9/16/04 .562 .658 .010 .514 nd .67 .115 ndSpike percentage 

recovery

9/16/04 104 122 2 94 0 122.00 22 0

0.10 ccv 9/16/04 E.094 .13 .09 .093 nd .10 .11 ndComments 9/16/04 -- -- -- -- CRFM -- -- CRFM

Platte River near 

Ashland

Set blank 11/15/04 <.144 <.036 <.004 <.016 nd <.011 <.012 ndSet spike 11/15/04 .165 .363 .0114 .39 nd .49 .18 ndSpike percentage 

recovery

11/15/04 33 73 2 79 0 97 35 0

0.10 ccv 11/15/04 E.098 .10 .09 .095 nd .096 .090 ndComments 11/15/04 -- -- -- -- CRFM -- -- CRFM

W90-1H Set blank 11/16/04 <.144 <.036 <.004 <.016 nd <.011 <.012 ndW56-5 Set spike 11/16/04 .183 .38 .01 .51 nd .52 .056 ndW54-10 Spike percentage 

recovery

11/16/04 37 77 3 101 0 103 11 0

W49-9 0.10 ccv 11/16/04 E.092 .11 .09 .097 nd .10 .091 ndAshland Deep Comments 11/16/04 -- -- -- -- CRFM -- -- CRFMFinished waterPlatte River near 

Ashland

Set blank 1/10/05 <.144 <.036 <.004 <.016 nd <.011 <.012 ndSet spike 1/10/05 .268 .42 .08 .48 nd .42 .18 ndSpike percentage 

recovery

1/10/05 52 82 16 92 0 80 34 0

0.10 ccv 1/10/05 E.062 .084 .08 .074 nd .081 0.086 ndComments 1/10/05 -- -- -- -- CRFM -- -- CRFM
Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued

30 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Sampled station name(s) Sample type Sampling trip date 1,7-dimethyl- xanthine Acetamino- phen Azithro- mycin Caffeine Caffeine13C surrogate Carbama- zapine Cimetidine Clarithro- mycin Laboratory reporting level --> 0.144 0.036 0.004 0.016 nd 0.011 0.012 nd W56-5 Set blank 1/11/05 <0.144 <0.036 <0.004 <0.016 nd <0.011 <0.012 nd W54-10 Set spike 1/11/05 .245 .40 .08 .50 nd .46 .19 nd W49-9 Spike percentage recovery 1/11/05 49 80 15 99 0 93 37 0.00 Ashland Deep 0.10 ccv 1/11/05 E.057 .090 .06 .075 nd .092 0.079 nd Finished water Comments 1/11/05 -- -- -- -- CRFM -- -- CRFM W90-1H Set blank 1/18/05 <.144 <.036 <.004 <.016 nd <.011 <.012 nd Set spike 1/18/05 .261 .405 .020 .54 nd .51 .15 nd Spike percentage recovery 1/18/05 52 81 4 108 0 102 29 .00 0.10 ccv 1/18/05 E.078 .073 .05 .061 nd .070 .068 nd Comments 1/18/05 -- -- -- -- CRFM -- -- CRFM Sampled station name(s) Sample type Sampling trip date Codeine Cotinine Dehydronife- dipine Digoxigenin Diltiazem Diphenhy- dramine Erythro- mycin Ethyl Nicotinate- d4 Standard Laboratory reporting level --> 0.015 0.014 0.015 nd 0.016 0.015 0.009 nd Platte River near Ashland Set blank 4/19, 4/20/2004 <0.015 <0.014 <0.015 nd <0.016 <0.015 <0.009 1.4 W90-1H Set spike 4/19, 4/20/2004 .506 .34 .48 nd .31 .342 .07 1.2 Spike percentage recovery 4/19, 4/20/2004 90 61 86 0 55 61 13 107 0.10 ccv 4/19, 4/20/2004 .09 .09 .10 nd .10 .10 .08 .09 Comments 4/19, 4/20/2004 -- -- -- CRFM -- -- -- -- W49-9 Set blank 4/20/04 <.015 <.014 <.015 nd <.016 <.015 <.009 1.10 W56-5 Set spike 4/20/04 .49 .37 .45 nd .32 .345 .12 1.09

W54-10 Spike percentage 

recovery

4/20/04 86 66 79 0 56 61 21 96

Ashland Deep 0.10 ccv 4/20/04 .10 .10 .10 nd .10 .10 .09 .09Finished water Comments 4/20/04 -- -- -- CRFM -- -- -- --
Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued

Pharmaceutical Compounds 31

Sampled station 

name(s) Sample type

Sampling trip 

date Codeine Cotinine

Dehydronifedipine Digoxigenin Diltiazem Diphenhy- dramine Erythro- mycin

Ethyl

Nicotinated4 Standard

Laboratory reporting level --> 0.015 0.014 0.015 nd 0.016 0.015 0.009 ndPlatte River near 

Ashland

Set blank 5/10/04 <0.015 <0.014 <0.015 nd <0.016 <0.015 <0.009 1.20Set spike 5/10/04 .531 .401 .60 nd .34 .407 <.009 1.2Spike percentage 

recovery

5/10/04 97 73 109 0 62 74 0 112

0.10 ccv 5/10/04 .11 .11 .11 nd .11 .11 .10 .10Comments 5/10/04 -- -- -- CRFM -- -- -- --

Platte River near 

Ashland

Set blank 9/14, 9/15/2004 <.015 <.014 <.015 nd <.016 <.015 <.009 1.31

W90-1H Set spike 9/14, 9/15/2004 .474 .565 .64 nd .384 .493 .097 1.21W56-5 Spike percentage 

recovery

9/14, 9/15/2004 94 112 126 0 76 98 20 119

W54-10 0.10 ccv 9/14, 9/15/2004 .09 .10 .09 nd .10 .10 0.11 .10Ashland Deep Comments 9/14, 9/15/2004 -- -- -- CRFM -- -- -- --Finished waterW49-9 Set blank 9/16/04 <.015 <.014 <.015 nd <.016 <.015 <.009 1.27

Set spike 9/16/04 .447 .553 .696 nd .356 .419 .026 1.19Spike percentage 

recovery

9/16/04 82 102 128 0 66 78 4 110.00

0.10 ccv 9/16/04 .10 .10 .10 nd .10 .10 .10 .09Comments 9/16/04 -- -- -- CRFM -- -- -- --

Platte River near 

Ashland

Set blank 11/15/04 <.015 <.014 E.010 nd E.007 E.008 <.009 ndSet spike 11/15/04 .71 .55 .40 nd .30 .43 .035 1.27Spike percentage 

recovery

11/15/04 142 109 79 0 60 86 7 127

0.10 ccv 11/15/04 .096 .094 .087 nd .088 .089 .091 .115Comments 11/15/04 -- -- -- CRFM -- -- -- --
Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued

32 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Sampled station name(s) Sample type Sampling trip date Codeine Cotinine Dehydronife- dipine Digoxigenin Diltiazem Diphenhy- dramine Erythro- mycin Ethyl Nicotinate- d4 Standard Laboratory reporting level --> 0.015 0.014 0.015 nd 0.016 0.015 0.009 nd W90-1H Set blank 11/16/04 <0.015 <0.014 E0.011 nd E0.007 E0.009 <0.009 nd W56-5 Set spike 11/16/04 .47 .33 .52 nd .36 .37 .014 1.12 W54-10 Spike percentage recovery 11/16/04 94 67 103 0 71 74 3 112 W49-9 0.10 ccv 11/16/04 .095 .094 .093 nd .091 .093 .092 0.085 Ashland Deep Comments 11/16/04 -- -- -- CRFM -- -- -- -- Finished water Platte River near Ashland Set blank 1/10/05 <.015 <.014 <.015 nd .016 <.015 <.009 nd Set spike 1/10/05 .62 .47 .41 nd .32 .40 0.1 .61 Spike percentage recovery 1/10/05 118 90 80 0 62 78 20 59 0.10 ccv 1/10/05 .083 .077 .070 nd .081 .081 .08 .08 Comments 1/10/05 -- -- -- CRFM -- -- -- -- W56-5 Set blank 1/11/05 <.015 <.014 E.010 nd E.015 E.009 <.009 nd W54-10 Set spike 1/11/05 .37 .39 .52 nd .32 .37 .074 .99 W49-9 Spike percentage recovery 1/11/05 74 79 104 0 63 74 15 99 Ashland Deep 0.10 ccv 1/11/05 .076 .078 .10 nd .089 .083 .10 .079 Finished water Comments 1/11/05 -- -- -- CRFM -- -- -- -- W90-1H Set blank 1/18/05 <.015 <.014 E.008 nd E.007 <.015 <.009 1.27 Set spike 1/18/05 .47 .47 .49 nd .317 .358 .025 .83 Spike percentage recovery 1/18/05 93 94 98.6 0 63 72 5 83

0.10 ccv 1/18/05 .073 .073 .068 nd .060 .067 .04 .07Comments 1/18/05 -- -- -- CRFM -- -- -- --
Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued

Pharmaceutical Compounds 33

Sampled station 

name(s) Sample type

Sampling trip 

date Fluoxetine Furosemide Gemfibrozil Ibuprofen Metformin Miconazole

Nicotinamided4I Standard Paroxetine metabolite

Laboratory reporting level --> 0.014 nd 0.013 0.042 nd 0.018 nd ndPlatte River near 

Ashland

Set blank 4/19, 4/20/2004 <0.014 nd <0.013 <0.042 nd <0.018 1.09 nd

W90-1H Set spike 4/19, 4/20/2004 .24 nd .33 .37 nd .08 1.12 nd

Spike percentage 

recovery

4/19, 4/20/2004 42 0 59 66 0 14 100 0

0.10 ccv 4/19, 4/20/2004 .08 nd .12 .10 0.09 .07 1.00 ndComments 4/19, 4/20/2004 -- -- -- -- -- -- -- CRFM

W49-9 Set blank 4/20/04 <.014 nd <.013 <.042 nd <.018 1.10 ndW56-5 Set spike 4/20/04 .26 nd .35 .296 nd .1 1.13 ndW54-10 Spike percentage 

recovery

4/20/04 46 0 62 52 0 17 100 0

Ashland Deep 0.10 ccv 4/20/04 .09 nd .14 .06 .09 .09 1.00 ndFinished water Comments 4/20/04 -- -- -- -- -- -- -- CRFMPlatte River near 

Ashland

Set blank 5/10/04 <.014 nd <.013 <.042 nd <.018 1.09 ndSet spike 5/10/04 .28 nd 1.03 .92 nd .09 1.10 ndSpike percentage 

recovery

5/10/04 50 0 94 84 0 16 100 0

0.10 ccv 5/10/04 .10 nd .11 .08 .11 .09 1.00 ndComments 5/10/04 -- -- -- -- -- -- -- CRFM

Platte River near 

Ashland

Set blank 9/14, 9/15/2004 <.014 nd <.013 <.042 nd <.018 1.028 nd

W90-1H Set spike 9/14, 9/15/2004 .345 nd .529 .756 nd .114 1.014 0.03W56-5 Spike percentage 

recovery

9/14, 9/15/2004 68 0 52 75 0 22 100 3

W54-10 0.10 ccv 9/14, 9/15/2004 .10 nd .14 .09 .10 .08 1.00 .06Ashland Deep Comments 9/14, 9/15/2004 -- -- -- -- -- -- -- CRFMFinished water
Sampled station 

name(s) Sample type

Sampling trip 

date Fluoxetine Furosemide Gemfibrozil Ibuprofen Metformin Miconazole

Nicotinamided4I Standard Paroxetine metabolite

Laboratory reporting level --> 0.014 nd 0.013 0.042 nd 0.018 nd ndW49-9 Set blank 9/16/04 <0.014 nd <0.013 <0.042 nd <0.018 1.01 nd

Set spike 9/16/04 .273 nd .48 .63 nd .07 1.09 ndSpike percentage 

recovery

9/16/04 50 0 44 58 0 14 100 0

0.10 ccv 9/16/04 .10 nd .16 .11 0.10 .09 1.00 0.06Comments 9/16/04 -- -- -- -- -- -- -- CRFM

Platte River near 

Ashland

Set blank 11/15/04 <.014 nd <.013 <.042 nd <.018 1.00 ndSet spike 11/15/04 .74 nd .45 .41 nd .070 1 ndSpike percentage 

recovery

11/15/04 149 0 45 41 0 14 100 0

0.10 ccv 11/15/04 .080 nd .11 <.042 .092 .077 1 ndComments 11/15/04 -- -- -- -- -- -- -- CRFM

W90-1H Set blank 11/16/04 <.014 nd <.013 <.042 nd E.011 1.00 ndW56-5 Set spike 11/16/04 .42 nd .56 .44 nd .28 1 ndW54-10 Spike percentage 

recovery

11/16/04 85 0 56 44 0 56 100 0

W49-9 0.10 ccv 11/16/04 .092 nd .11 <.042 .094 .080 1 ndAshland Deep Comments 11/16/04 -- -- -- -- -- -- -- CRFMFinished waterPlatte River near 

Ashland

Set blank 1/10/05 E.009 nd <.013 <.042 nd <.018 1.00 ndSet spike 1/10/05 .89 <LRL .25 .30 nd .11 1.04 ndSpike percentage 

recovery

1/10/05 172 0 48 58 0 20 100 0

0.10 ccv 1/10/05 .064 <LRL .069 <.042 E.08 .059 1.00 ndComments 1/10/05 -- -- -- -- -- -- -- CRFM

34 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
Non-Pharmaceutical Compounds 35

Sampled station 

name(s) Sample type

Sampling trip 

date Fluoxetine Furosemide Gemfibrozil Ibuprofen Metformin Miconazole

Nicotinamided4I Standard Paroxetine metabolite

Laboratory reporting level --> 0.014 nd 0.013 0.042 nd 0.018 nd ndW56-5 Set blank 1/11/05 E0.006 nd <0.013 <0.042 nd <0.018 1.00 ndW54-10 Set spike 1/11/05 .22 nd .15 .15 nd .046 1.03 ndW49-9 Spike percentage 

recovery

1/11/05 43 0 29 30 0 9 103 0

Ashland Deep 0.10 ccv 1/11/05 .075 nd .11 <.042 E.076 .075 1.00 ndFinished water Comments 1/11/05 -- -- -- -- -- -- -- CRFMW90-1H Set blank 1/18/05 <.014 nd <.013 <.042 nd <.018 1.01 nd

Set spike 1/18/05 .36 nd .072 .31 nd .10 1.01 ndSpike percentage 

recovery

1/18/05 72.8 0 14.4 61.2 0 20 101 0

0.10 ccv 1/18/05 .069 nd .06 <.042 E.075 .066 1 ndComments 1/18/05 -- -- -- -- -- -- -- CRFM

Sampled station 

name(s) Sample type

Sampling trip 

date Ranitidine Salbutamol

Sulfamethoxazole Thiabenda- zole Trimeth- oprim Warfarin

Laboratory reporting level --> 0.013 0.023 0.064 0.011 0.013 0.012Platte River near 

Ashland

Set blank 4/19, 4/20/2004 <0.013 <0.023 <0.064 <0.011 <0.013 <0.012

W90-1H Set spike 4/19, 4/20/2004 .23 .33 .466 .434 .4 .43

Spike percentage 

recovery

4/19, 4/20/2004 40 59 83 78 63 77

0.10 ccv 4/19, 4/20/2004 0.09 0.11 0.11 .09 .09 .10Comments 4/19, 4/20/2004 -- -- -- -- -- --

W49-9 Set blank 4/20/04 <.013 <.023 <.064 <.011 <.013 <.012W56-5 Set spike 4/20/04 .26 .325 .447 .40 .338 .41W54-10 Spike percentage 

recovery

4/20/04 46 58 79 70 60 73

Ashland Deep 0.10 ccv 4/20/04 .09 .11 .12 .09 .10 .11Finished water Comments 4/20/04 -- -- -- -- -- --

Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
Sampled station 

name(s) Sample type

Sampling trip 

date Ranitidine Salbutamol

Sulfamethoxazole Thiabenda- zole Trimeth- oprim Warfarin

Laboratory reporting level --> 0.013 0.023 0.064 0.011 0.013 0.012Platte River near 

Ashland

Set blank 5/10/04 <0.013 <0.023 <0.064 <0.011 <0.013 <0.012Set spike 5/10/04 .25 .28 .506 .43 .4 .53Spike percentage 

recovery

5/10/04 45 51 46 79 64 97

0.10 ccv 5/10/04 .11 .12 .11 .10 .11 .11Comments 5/10/04 -- -- -- -- -- --

Platte River near 

Ashland

Set blank 9/14, 9/15/2004 <.013 <.023 <.064 <.011 <.013 <.012

W90-1H Set spike 9/14, 9/15/2004 .224 .354 .498 .593 .541 .532W56-5 Spike percentage 

recovery

9/14, 9/15/2004 44 70 98 118 106 106

W54-10 0.10 ccv 9/14, 9/15/2004 .09 .11 .10 .10 .11 .10Ashland Deep Comments 9/14, 9/15/2004 -- -- -- -- -- --Finished waterW49-9 Set blank 9/16/04 <.013 <.023 <.064 <.011 <.013 <.012

Set spike 9/16/04 .192 .586 .485 .618 .54 .561Spike percentage 

recovery

9/16/04 36 108 90 114 100 104

0.10 ccv 9/16/04 .09 .11 .11 .10 .11 .11Comments 9/16/04 -- -- -- -- -- --

Platte River near 

Ashland

Set blank 11/15/04 <.013 <.023 <.064 <.011 <.013 <.012Set spike 11/15/04 .22 .25 .65 .47 .49 .49Spike percentage 

recovery

11/15/04 44 50 130 95 97 98

0.10 ccv 11/15/04 .088 .10 .11 .087 .10 .10Comments 11/15/04 -- -- -- -- -- --

36 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
Sampled station 

name(s) Sample type

Sampling trip 

date Ranitidine Salbutamol

Sulfamethoxazole Thiabenda- zole Trimeth- oprim Warfarin

Laboratory reporting level --> 0.013 0.023 0.064 0.011 0.013 0.012W90-1H Set blank 11/16/04 <0.013 <0.023 <0.064 <0.011 <0.013 <0.012W56-5 Set spike 11/16/04 .18 .23 .39 .50 .50 .42W54-10 Spike percentage 

recovery

11/16/04 35 47 78 101 101 85

W49-9 0.10 ccv 11/16/04 .092 .11 .12 .091 .11 .11Ashland Deep Comments 11/16/04 -- -- -- -- -- --Finished waterPlatte River near 

Ashland

Set blank 1/10/05 <.013 <.023 <.064 <.011 <.013 <.012Set spike 1/10/05 .17 .23 .46 .48 .43 .50Spike percentage 

recovery

1/10/05 32 44 88 92 84 96

0.10 ccv 1/10/05 .076 .093 .079 .076 .088 .073Comments 1/10/05 -- -- -- -- -- --

W56-5 Set blank 1/11/05 <.013 <.023 <.064 <.011 <.013 <.012W54-10 Set spike 1/11/05 .12 .36 .27 .46 .40 .39W49-9 Spike percentage 

recovery

1/11/05 24 73 54 91 80 79

Ashland Deep 0.10 ccv 1/11/05 .074 .090 .079 .078 .084 .11Finished water Comments 1/11/05 -- -- -- -- -- --W90-1H Set blank 1/18/05 <.013 <.023 <.064 <.011 <.013 <.012

Set spike 1/18/05 .25 .29 .41 .46 .44 .41Spike percentage 

recovery

1/18/05 49 57 82 91 88 82

0.10 ccv 1/18/05 .066 .071 .075 .068 .067 .068Comments 1/18/05 -- -- -- -- -- --

Return to text

Non-Pharmaceutical Compounds 37

Table 9. Laboratory quality assurance/quality control data for pharmaceutical analyses during the riverbank filtration study, Platte River, Nebraska, 2004 to 2005.—Continued
Table 10. Dissolved organic carbon, ultraviolet light absorbance at 254 nanometers, and specific ultraviolet light absorbance 

measurements from water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.

[DOC, dissolved organic carbon; UV254, ultraviolet light absorbance at 254 nanometers; SUVA, specific ultraviolet light absorbance (UV254/DOC); 

mg/L, milligrams per liter; cm, centimeter; --, sample not analyzed]

Station number Sample name Date Time

DOC

(mg/L)

UV254

(cm)

SUVA

(cm/mg/L)

Method detection limit --> 0.2 0.001 0.001

410322096190103 Cattle feedlot lagoon 2/14/02 0900 400 7.125 0.018

5/9/02 0900 180 8.100 .045

8/15/02 0900 170 3.950 .023

8/23/02 0900 64 2.600 .040

5/22/03 0900 320 5.460 .017

410322096190104 Hog confinement lagoon 2/14/02 1400 140 1.975 .014

5/9/02 1330 180 8.100 .045

8/15/02 1230 46 1.068 .023

8/23/02 1600 40 1.890 .047

5/22/03 1430 43 .750 .018

06803496 Wastewater treatment 

plant effluent

2/13/02 0900 -- -- --

5/8/02 0830 10 .186 .018

8/14/02 0900 13 .239 .019

8/22/02 0900 -- -- --

5/21/03 1030 28 .625 .023

06801000 Platte River near Ashland 12/10/01 1000 -- -- --

1/7/02 1200 -- -- --

2/11/02 1000 2.5 .058 .023

3/11/02 1000 -- -- --

4/8/02 1100 -- -- --

5/6/02 1100 4.1 .107 .026

06801000 Platte River near Ashland 6/11/02 1030 -- -- --

7/9/02 1000 -- -- --

8/12/02 1140 6.6 .168 0.025

8/21/02 1100 4.3 .115 .027

9/9/02 0930 -- -- --

10/16/02 0930 -- -- --

11/11/02 1030 2.4 .057 .023

4/23/03 1000 -- -- --

5/20/03 1030 6.9 .216 .031

06805000 Salt Creek near Ashland 2/12/02 1000 3.7 .083 .022

5/7/02 1000 7.7 .212 .028

8/13/02 1000 3.4 .116 .034

8/20/02 1200 3.6 .110 .031

11/12/02 1000 3.4 .085 .025

4/24/03 0930 -- -- --

38 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Station number Sample name Date Time

DOC

(mg/L)

UV254

(cm)

SUVA

(cm/mg/L)

Method detection limit --> 0.2 0.001 0.001

410547096254801 G-040474-Memphis 12/17/01 0730 -- -- --

1/14/02 0730 -- -- --

2/19/02 0730 0.9 0.019 0.022

3/18/02 0730 -- -- --

4/15/02 0730 -- -- --

6/17/02 0105 -- -- --

8/19/02 0730 1.1 .020 .018

9/16/02 0730 -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- --

1/14/02 0920 -- -- --

2/20/02 0900 2.2 .052 .024

3/18/02 0930 -- -- --

4/15/02 0930 -- -- --

5/13/02 0900 2.9 .066 .022

6/17/02 0930 -- -- --

7/16/02 0940 -- -- --

8/19/02 1000 3.2 .110 .034

8/28/02 0830 2.4 .092 .038

9/16/02 1020 -- -- --

10/23/02 0930 -- -- --

11/18/02 0900 -- -- --

4/30/03 0900 -- -- --

5/27/03 1030 3.3 .117 .035

410315096193501 W54-10 12/17/01 1030 -- -- --

1/14/02 1020 -- -- --

2/20/02 1100 1.9 .040 .021

3/18/02 1030 -- -- --

4/15/02 1050 -- -- --

5/13/02 1030 1.8 .035 .019

6/17/02 10:50 -- -- --

7/16/02 1130 -- -- --

8/19/02 1200 2.4 .071 .030

8/28/02 1100 2.0 .077 .039

9/16/02 1100 -- -- --

10/23/02 1040 -- -- --

11/18/02 1100 -- -- --

4/30/03 1130 -- -- --

5/27/03 1130 2.3 .076 .033

Non-Pharmaceutical Compounds 39

Table 10. Dissolved organic carbon, ultraviolet light absorbance at 254 nanometers, and specific ultraviolet light absorbance 

measurements from water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 

2005.—Continued
Station number Sample name Date Time

DOC

(mg/L)

UV254

(cm)

SUVA

(cm/mg/L)

Method detection limit --> 0.2 0.001 0.001

410349096202101 W49-9 12/17/01 1120 -- -- --

1/14/01 1110 -- -- --

2/20/02 1230 1.8 0.035 0.020

3/18/02 1120 -- -- --

4/15/02 1150 -- -- --

5/13/02 1200 1.8 .044 .024

6/17/02 1150 -- -- --

7/16/02 1300 -- -- --

8/19/02 1330 1.9 .047 .024

8/28/02 1230 1.8 .052 .029

9/16/02 1130 -- -- --

10/23/02 1200 -- -- --

11/18/02 1230 -- -- --

4/30/03 1230 -- -- --

5/27/03 1300 1.8 .046 .026

410315096190101 Raw water 12/17/01 1215 -- -- --

1/14/02 1210 -- -- --

2/19/02 1030 -- -- --

3/18/02 1220 -- -- --

4/15/02 1240 -- -- --

5/13/02 1400 2.6 .061 .023

6/17/02 1300 -- -- --

7/16/02 1300 -- -- --

8/19/02 1300 3.0 .089 .029

8/28/02 1330 2.4 .086 .036

9/16/02 1230 -- -- --

10/23/02 1300 -- -- --

11/18/02 1330 -- -- --

4/30/03 1330 -- -- --

5/27/03 1500 2.3 .067 .029

40 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 10. Dissolved organic carbon, ultraviolet light absorbance at 254 nanometers, and specific ultraviolet light absorbance 

measurements from water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 

2005.—Continued
Station number Sample name Date Time

DOC

(mg/L)

UV254

(cm)

SUVA

(cm/mg/L)

Method detection limit --> 0.2 0.001 0.001

410315096190102 Finished water 12/17/01 1230 -- -- --

1/14/02 1230 -- -- --

2/19/02 930 -- -- --

3/18/02 1240 -- -- --

4/15/02 1310 -- -- --

5/13/02 1500 -- -- --

6/17/02 1330 -- -- --

7/16/02 1330 -- -- --

8/19/02 1600 2.7 0.061 0.023

8/28/02 1500 2.6 .058 .023

9/16/02 1300 -- -- --

10/23/02 1330 -- -- --

11/18/02 1430 -- -- --

4/30/03 1400 -- -- --

5/27/03 1400 1.9 .042 .022

Return to text

Non-Pharmaceutical Compounds 41

Table 10. Dissolved organic carbon, ultraviolet light absorbance at 254 nanometers, and specific ultraviolet light absorbance 

measurements from water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 

2005.—Continued
Table 11. Summary statistics of nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) in samples collected 

during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.[Summary statistics are based on detected concentrations; See table 3 for compound abbreviations; All concentrations in micrograms per liter; LRL, Laboratory reporting level ; n, number of samples ; det, number of detections; max, maximum; med, median; std. dev., standard deviation; na, not applicable]

Constituent LRL

410322096190103

Cattle feedlot lagoon

410322096190104

Hog confinement lagoon

06803496

Wastewater-treatment plant effluent

n det max med mean

std. 

dev. n det max med mean

std. 

dev. n det max med mean

std. 

dev.

Wastewater samples

NTA 0.5 3 0 na na na na 0 0 na na na na 3 3 22 12 15 6.1EDTA .1 3 3 12 3.6 5.6 5.7 4 4 7.7 4.4 4.4 2.8 4 4 750 615 588 160NP1EC .1 2 2 11 11 11 0.4 4 3 61 58 43 29 4 4 230 98 118 81NP2EC .1 3 3 7.6 6.4 5.4 2.9 4 3 60 16 30 26 4 4 370 240 230 126NP3EC .1 3 1 .6 .6 .6 na 4 1 3.0 3.0 3.0 na 4 4 6.2 5.0 4.8 1.4NP4EC .1 3 1 .2 .2 .2 na 4 1 .4 .4 .4 na 4 4 1.5 1.1 1.2 .3Total NPECs .4 2 2 18 18 18 .4 4 3 124 74 74 51 4 4 505 380 354 177

Constituent LRL

06801000

Platte River near Ashland

06805000

Salt Creek near Ashland

n det max med mean

std. 

dev. n det max med mean

std. 

dev.

Surface-water samples

NTA 0.5 7 0 na na na na 2 0 na na na naEDTA .1 7 7 2.8 1.6 1.8 0.7 6 6 24 12 14 6.6NP1EC .1 2 2 4.1 3.5 3.5 .8 6 6 69 41 43 20NP2EC .1 4 2 1.4 1.4 1.4 .1 6 6 88 36 40 27NP3EC .1 7 2 .5 .3 .3 .2 6 6 2.0 .8 1.0 .6NP4EC .1 7 0 na na na na 6 4 .3 .2 .2 .1Total NPECs .4 2 2 5.4 5.2 5.2 .4 6 6 150 87 84 42

42 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Constituent LRL

410322096191701

Well W90-1H

410349096202101

Well W49-9

410315096193501

Well W54-10

n det max med mean

std. 

dev. n det max med mean

std. 

dev. n det max med mean

std. 

dev.

Ground-water samples

NTA 0.5 5 0 na na na na 4 0 na na na na 4 0 na na na naEDTA .1 5 5 2.4 1.4 1.4 0.7 4 4 0.9 0.8 0.7 0.2 5 5 3.5 1.6 1.8 1.0NP1EC .1 1 0 na na na na 0 0 na na na na 2 0 na na na naNP2EC .1 2 0 na na na na 0 0 na na na na 2 0 na na na naNP3EC .1 5 1 .1 .1 .1 na 4 0 na na na na 5 1 .2 .2 .2 naNP4EC .1 5 0 na na na na 4 0 na na na na 5 0 na na na naTotal NPECs .4 1 0 na na na na 0 0 na na na na 2 0 na na na na

Constituent LRL

410315096190101

Raw water

410315096190102

Finished water

n det max med mean

std. 

dev. n det max med mean

std. 

dev.

Drinking-water samples

NTA 0.5 3 0 na na na na 3 0 na na na naEDTA .1 3 3 2.6 2.2 1.7 1.2 3 3 2.5 0.8 1.2 1.2NP1EC .1 2 0 na na na na 2 0 na na na naNP2EC .1 1 0 na na na na 2 0 na na na naNP3EC .1 3 1 .2 .2 .2 na 3 0 na na na naNP4EC .1 3 0 na na na na 3 0 na na na naTotal NPECs .4 1 0 na na na na 3 0 na na na na

Return to text

Non-Pharmaceutical Compounds 43

Table 11. Summary statistics of nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Table 12. Nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) concentrations from selected water-quality samples 

collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.[See table 3 for compound abbreviations. SS, surrogate spike; % rec, percent recovery; μg/L, micrograms per liter; HM, high sample matrix prevented quantitation; --, sample not analyzed]

Station number Sample name Date Time

4-n-NP2EC 

(SS)

(% rec)

NTA

(μg/L)

EDTA

(μg/L)

NP1EC 

(μg/L)

NP2EC 

(μg/L)

NP3EC 

(μg/L)

NP4EC 

(μg/L)

Total 

NPECs 

(μg/L)

Method detection limit --> 1 0.5 0.1 0.1 0.1 0.1 0.1 0.4410322096190103 Cattle feedlot lagoon 2/14/02 0900 230 <0.5 12 11 6.4 <0.1 <0.1 17

5/9/02 0900 HM HM HM HM HM HM HM HM

8/15/02 0900 150 <.5 1.1 1.1 2.1 .6 .2 4.08/23/02 0900 -- -- -- -- -- -- -- --5/22/03 0900 110 <.5 3.6 10 7.6 <.1 <.1 18

410322096190104 Hog confinement 

lagoon

2/14/02 1400 140 2.2 7.7 9.4 13 <.1 <.1 22

5/9/02 1330 310 3.9 5.7 <.1 <.1 <.1 <.1 <.4

8/15/02 1230 730 2.4 3.1 61 60 3.0 .4 1248/23/02 1600 -- -- -- -- -- -- -- --5/22/03 1430 270 2.6 1.2 58 16 <.1 <.1 74

06803496 Wastewater-treatment 

plant effluent

2/13/02 0900 -- -- -- -- -- -- -- --

5/8/02 0830 85 2.5 590 230 270 4.3 .9 505

8/14/02 0900 130 12 640 120 370 5.7 1.1 4978/22/02 0900 96 22 370 46 210 6.2 1.5 2635/21/03 1030 49 10 750 75 69 3.2 1.2 149

06801000 Platte River near 

Ashland

12/10/01 1000 -- -- -- -- -- -- -- --

1/7/02 1200 -- -- -- -- -- -- -- --

2/11/02 1000 120 <.5 1.4 3.0 1.4 .5 <.1 4.93/11/02 1000 -- -- -- -- -- -- -- --

4/8/02 1100 -- -- -- -- -- -- -- --5/6/02 1030 40 <.5 1.6 .4 .4 <.1 <.1 .7

6/11/02 1030 -- -- -- -- -- -- -- --

7/9/02 1000 -- -- -- -- -- -- -- --

8/12/02 1130 66 <.5 2.8 .6 <.1 <.1 <.1 .68/21/02 1100 81 <.5 1.6 .6 <.1 <.1 <.1 .6

9/9/02 0930 -- -- -- -- -- -- -- --

44 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Station number Sample name Date Time

4-n-NP2EC 

(SS)

(% rec)

NTA

(μg/L)

EDTA

(μg/L)

NP1EC 

(μg/L)

NP2EC 

(μg/L)

NP3EC 

(μg/L)

NP4EC 

(μg/L)

Total 

NPECs 

(μg/L)

Method detection limit --> 1 0.5 0.1 0.1 0.1 0.1 0.1 0.406801000—Continued Platte River near 

Ashland

10/16/02 0930 -- -- -- -- -- -- -- --11/11/02 1030 44 <0.5 2.8 4.1 1.3 <0.1 <0.1 5.44/23/03 1000 62 <.5 1.6 .9 .5 <.1 <.1 1.35/20/03 1030 76 <.5 1.2 1.2 .9 .2 <.1 2.3

06805000 Salt Creek near Ashland 2/12/02 1000 65 <.5 7.5 69 27 .8 .2 97 5/7/02 1000 110 <.5 11 16 8.2 .4 <.1 25

8/13/02 1000 170 .6 21 60 88 2.0 .3 1508/20/02 1000 90 .8 9.7 29 46 1.4 .2 7711/12/02 1000 91 .8 12 50 45 .7 .2 964/24/03 0930 80 1.1 24 32 26 .8 <.1 59

412411097165601 Loup power canal 4/22/03 1030 HM HM HM HM HM HM HM HM410547096254801 G-040474-Memphis, 

2/19/02

12/17/01 0730 -- -- -- -- -- -- -- --1/14/02 0730 -- -- -- -- -- -- -- --2/19/02 0730 -- -- -- -- -- -- -- --3/18/02 0730 -- -- -- -- -- -- -- --4/15/02 0730 -- -- -- -- -- -- -- --6/17/02 0105 -- -- -- -- -- -- -- --8/19/02 0730 79 <.5 .1 .2 <.1 <.1 <.1 E.29/16/02 0730 -- -- -- -- -- -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- -- -- -- -- -- --

1/14/02 0920 -- -- -- -- -- -- -- --2/20/02 0900 49 <.5 1.4 .6 .3 <.1 <.1 .93/18/02 0930 -- -- -- -- -- -- -- --4/15/02 0930 -- -- -- -- -- -- -- --5/13/02 0900 51 <.5 1.4 <.1 <.1 <.1 <.1 <.46/17/02 0930 -- -- -- -- -- -- -- --7/16/02 0940 -- -- -- -- -- -- -- --8/19/02 1000 98 <.5 2.4 .3 <.1 <.1 <.1 E.3

Table 12. Nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) concentrations from selected water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued

Non-Pharmaceutical Compounds 45
Station number Sample name Date Time

4-n-NP2EC 

(SS)

(% rec)

NTA

(μg/L)

EDTA

(μg/L)

NP1EC 

(μg/L)

NP2EC 

(μg/L)

NP3EC 

(μg/L)

NP4EC 

(μg/L)

Total 

NPECs 

(μg/L)

Method detection limit --> 1 0.5 0.1 0.1 0.1 0.1 0.1 0.4410322096191701—Continued

W90-1H 8/28/02 0830 66 <0.5 0.4 0.8 0.5 0.1 <0.1 1.4

9/16/02 1020 -- -- -- -- -- -- -- --10/23/02 0930 -- -- -- -- -- -- -- --11/18/02 0900 -- -- -- -- -- -- -- --4/30/03 0900 -- -- -- -- -- -- -- --5/27/03 1030 56 <.5 1.5 .3 .2 <.1 <.1 .5

410315096193501 W54-10 12/17/01 1030 -- -- -- -- -- -- -- --

1/14/02 1020 -- -- -- -- -- -- -- --2/20/02 1100 62 <.5 1.6 .2 .2 <.1 <.1 .53/18/02 1030 -- -- -- -- -- -- -- --4/15/02 1050 -- -- -- -- -- -- -- --5/13/02 1030 61 <.5 1.3 <.1 <.1 <.1 <.1 <.46/17/02 10:0 -- -- -- -- -- -- -- --7/16/02 1130 -- -- -- -- -- -- -- --8/19/02 1200 94 <.5 1.8 <.1 <.1 <.1 <.1 <.48/28/02 1100 50 1.7 3.5 1.3 .7 .2 <.1 2.29/16/02 1100 -- -- -- -- -- -- -- --10/23/02 1040 -- -- -- -- -- -- -- --11/18/02 1100 -- -- -- -- -- -- -- --4/30/03 1130 -- -- -- -- -- -- -- --5/27/03 1130 56 <.5 1.0 .2 .2 <.1 <.1 .4

410349096202101 W49-9 12/17/01 1120 -- -- -- -- -- -- -- --

1/14/01 1110 -- -- -- -- -- -- -- --2/20/02 1230 140 <.5 .8 .1 .4 <.1 <.1 .53/18/02 1120 -- -- -- -- -- -- -- --4/15/02 1150 -- -- -- -- -- -- -- --5/13/02 1200 67 <.5 .8 .5 .3 <.1 <.1 .8

46 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 12. Nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) concentrations from selected water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-n-NP2EC 

(SS)

(% rec)

NTA

(μg/L)

EDTA

(μg/L)

NP1EC 

(μg/L)

NP2EC 

(μg/L)

NP3EC 

(μg/L)

NP4EC 

(μg/L)

Total 

NPECs 

(μg/L)

Method detection limit --> 1 0.5 0.1 0.1 0.1 0.1 0.1 0.410349096202101—Continued

W49-9 6/17/02 1150 -- -- -- -- -- -- -- --

7/16/02 1300 -- -- -- -- -- -- -- --8/19/02 1330 73 <0.5 0.9 0.2 0.1 <0.1 <0.1 E0.38/28/02 1230 -- -- -- -- -- -- -- --9/16/02 1130 -- -- -- -- -- -- -- --10/23/02 1200 -- -- -- -- -- -- -- --11/18/02 1230 -- -- -- -- -- -- -- --4/30/03 1230 -- -- -- -- -- -- -- --5/27/03 1300 150 <.5 .5 .5 .7 <.1 <.1 1.2

410315096190101 Raw water 12/17/01 1215 -- -- -- -- -- -- -- --

1/14/02 1210 -- -- -- -- -- -- -- --2/19/02 1030 -- -- -- -- -- -- -- --3/18/02 1220 -- -- -- -- -- -- -- --4/15/02 1240 -- -- -- -- -- -- -- --5/13/02 1400 -- -- -- -- -- -- -- --6/17/02 1300 -- -- -- -- -- -- -- --7/16/02 1300 -- -- -- -- -- -- -- --8/19/02 1500 100 <.5 2.6 .4 .3 .2 <.1 .98/28/02 1330 100 <.5 2.2 <.1 .1 <.1 <.1 E.19/16/02 1230 -- -- -- -- -- -- -- --10/23/02 1300 -- -- -- -- -- -- -- --11/18/02 1330 -- -- -- -- -- -- -- --4/30/03 1330 -- -- -- -- -- -- -- --5/27/03 1500 81 <.5 .4 <.1 <.1 <.1 <.1 <.4

410315096190102 Finished water 12/17/01 1230 -- -- -- -- -- -- -- --

1/14/02 1230 -- -- -- -- -- -- -- --2/19/02 0930 -- -- -- -- -- -- -- --3/18/02 1240 -- -- -- -- -- -- -- --

Non-Pharmaceutical Compounds 47

Table 12. Nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) concentrations from selected water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-n-NP2EC 

(SS)

(% rec)

NTA

(μg/L)

EDTA

(μg/L)

NP1EC 

(μg/L)

NP2EC 

(μg/L)

NP3EC 

(μg/L)

NP4EC 

(μg/L)

Total 

NPECs 

(μg/L)

Method detection limit --> 1 0.5 0.1 0.1 0.1 0.1 0.1 0.4410315096190102—Continued

Finished water 4/15/02 1310 -- -- -- -- -- -- -- --

5/13/02 1500 -- -- -- -- -- -- -- --6/17/02 1330 -- -- -- -- -- -- -- --7/16/02 1330 -- -- -- -- -- -- -- --8/19/02 1600 91 <0.5 0.8 <0.1 <0.1 <0.1 <0.1 <0.48/28/02 1500 92 <.5 2.5 .7 .8 <.1 <.1 1.59/16/02 1300 -- -- -- -- -- -- -- --10/23/02 1330 -- -- -- -- -- -- -- --11/18/02 1430 -- -- -- -- -- -- -- --4/30/03 1400 -- -- -- -- -- -- -- --5/27/03 1400 50 <.5 .2 <.1 <.1 <.1 <.1 <.4

Quality assurance samples Duplicate analyses06803496 Wastewater-treatment 

plant effluent

5/21/03 1030 49 10 750 75 69 3.2 1.2 149

06803496 Wastewater-treatment 

plant effluent—Duplicate

5/21/03 1030 77 10 680 90 94 3.9 1.5 189

06801000 Platte River near 

Ashland

5/20/03 1030 76 <.5 1.2 1.2 .9 .2 <.1 2.3

06801000 Platte River near Ashland—Duplicate 5/20/03 1030 31 <.5 1.2 1.3 .6 <.1 <.1 1.9410322096191701 W90-1H 5/13/02 0900 51 <.5 1.4 <.1 <.1 <.1 <.1 <.4410322096191701 W90-1H—Duplicate 5/13/02 0900 51 <.5 1.3 <.1 <.1 <.1 <.1 <.4410349096202101 W49-9 5/27/03 1300 150 <.5 .5 .5 .7 <.1 <.1 1.2410349096202101 W49-9—Duplicate 5/27/03 1300 200 <.5 .4 .7 .4 <.1 <.1 1.1410315096190102 Finished water 8/19/02 1600 91 <.5 .8 <.1 <.1 <.1 <.1 <.4410315096190102 Finished water—

Duplicate

8/19/02 1600 120 <.5 .8 .2 <.1 .3 <.1 .5

48 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 12. Nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) concentrations from selected water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-n-NP2EC 

(SS)

(% rec)

NTA

(μg/L)

EDTA

(μg/L)

NP1EC 

(μg/L)

NP2EC 

(μg/L)

NP3EC 

(μg/L)

NP4EC 

(μg/L)

Total 

NPECs 

(μg/L)

Method detection limit --> 1 0.5 0.1 0.1 0.1 0.1 0.1 0.4Laboratory reagent blanks

Distilled water blank -- -- -- <0.5 <0.1 <0.1 <0.1 <0.1 <0.1 <0.4Distilled water blank -- -- 18 <.5 <.1 .2 .1 <.1 <.1 .4Distilled water blank -- -- 72 <.5 <.1 .2 <.1 <.1 <.1 E.2Distilled water blank -- -- 35 <.5 <.1 <.1 <.1 <.1 <.1 <.4Distilled water blank -- -- 11 .7 <.1 <.1 <.1 <.1 <.1 <.4Distilled water blank -- -- 8 <.5 <.1 <.1 <.1 <.1 <.1 <.4Distilled water blank -- -- 6 <.5 <.1 .1 <.1 <.1 <.1 E.1

Laboratory reagent spikes (% rec) (% rec) (% rec) (% rec) (% rec) (% rec) (% rec) (% rec)

Distilled water blank 

+ spike

-- -- 78 68 47 120 180 60 19 95

Distilled water blank 

+ spike

-- -- 130 290 68 200 150 100 30 120

Return to text

Non-Pharmaceutical Compounds 49

Table 12. Nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA), and nonylphenolethoxycarboxylates (NPECs) concentrations from selected water-quality samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Table 13. Alkylphenol and other organic compound concentrations in samples collected during the riverbank filtration study, Platte 

River, Nebraska, 2002 to 2005.

[SS, surrogate spike; % rec, percent recovery; ng/L, nanograms per liter; <, less than; --, sample not analyzed]

Station number Sample name Date Time

D21-4-methyl-2,6-

di(tert-butyl)-

phenol (SS)

(% rec)

4-n-nonylphenol 

(SS)

(% rec)

D6-bisphenol A (SS)

(% rec)

Laboratory reporting level 10 10 10

410322096190103 Cattle feedlot lagoon 8/15/02 0900 <10 22 180

410322096190104 Hog confinement lagoon 8/15/02 1230 44 120 190

06803496 Wastewater treatment plant 

effluent

8/14/02 0900 84 150 <10

06801000 Platte River near Ashland 8/12/02 1130 41 11 <10

06805000 Salt Creek near Ashland 8/13/02 1000 <10 <10 72

Laboratory reagent blanks

Distilled water blank -- -- 150 430 <10

Distilled water blank -- -- 11 160 <10

Distilled water blank -- -- <10 37 <10

Laboratory reagent spikes (% rec) (% rec) (% rec)

Distilled water blank + 

spike

-- -- 110 <10 200

Distilled water blank + 

spike

-- -- 29 <10 <10

Station number Sample name Date Time 1,3-dichlorobenzene 

(ng/L)

1,4-dichlorobenzene 

(ng/L)

1,2-dichlorobenzene 

(ng/L)

Laboratory reporting level 10 10 10

410322096190103 Cattle feedlot lagoon 8/15/02 0900 <10 <10 <10

410322096190104 Hog confinement lagoon 8/15/02 1230 <10 <10 <10

06803496 Wastewater treatment plant 

effluent

8/14/02 0900 <10 740 140

06801000 Platte River near Ashland 8/12/02 1130 <10 <10 <10

06805000 Salt Creek near Ashland 8/13/02 1000 <10 <10 <10

Laboratory reagent blanks

Distilled water blank -- -- <10 <10 <10

Distilled water blank -- -- <10 <10 <10

Distilled water blank -- -- <10 <10 <10

Laboratory reagent spikes (% rec) (% rec) (% rec)

Distilled water blank + 

spike

-- -- 64 69 85

Distilled water blank + 

spike

-- -- 110 120 140

50 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Station number Sample name Date Time

4-methylphenol 

(ng/L)

4-ethylphenol 

(ng/L)

4-propylphenol 

(ng/L)

4-tert-butylphenol 

(ng/L)

4-tert-pentylphenol 

(ng/L)

Laboratory reporting level 10 10 10 10 10

410322096190103 Cattle feedlot lagoon 8/15/02 0900 100 <10 <10 41 22

410322096190104 Hog confinement 

lagoon

8/15/02 1230 250 <10 <10 47 73

06803496 Wastewater treatment 

plant effluent

8/14/02 0900 36,000 <10 <10 290 5,700

06801000 Platte River near 

Ashland

8/12/02 1130 <10 <10 <10 <10 <10

06805000 Salt Creek near 

Ashland

8/13/02 1000 35 <10 <10 19 19

Laboratory reagent blanks

Distilled water blank -- -- 62 <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10 <10

Laboratory reagent spikes (% rec) (% rec) (% rec) (% rec) (% rec)

Distilled water blank 

+ spike

-- -- 200 170 170 150 160

Distilled water blank 

+ spike

-- -- 190 140 150 150 160

Station number Sample name Date Time

2,6-di-tertbutylphenol 

(ng/L)

2,6-di-tertbutyl-1,4-

benzoquinone (ng/L)

2[3]-tert-butyl-4-methylphenol 

(ng/L)

2,6-di-tertbutyl-4-

methylphenol 

(ng/L)

4-(tertoctyl)phenol 

(ng/L)

Laboratory reporting level 10 10 10 10 10

410322096190103 Cattle feedlot lagoon 8/15/02 0900 <10 700 <10 E3 130

410322096190104 Hog confinement 

lagoon

8/15/02 1230 190 960 <10 <10 200

06803496 Wastewater treatment 

plant effluent

8/14/02 0900 56 1,100 24 <10 1,200

06801000 Platte River near 

Ashland

8/12/02 1130 93 970 <10 <10 160

06805000 Salt Creek near 

Ashland

8/13/02 1000 <10 370 <10 <10 120

Laboratory reagent blanks

Distilled water blank -- -- <10 <10 <10 <10 24

Distilled water blank -- -- <10 <10 <10 <10 110

Distilled water blank -- -- <10 <10 <10 <10 E4

Laboratory reagent spikes (% rec) (% rec) (% rec) (% rec) (% rec)

Distilled water blank 

+ spike

-- -- 130 120 130 70 180

Distilled water blank 

+ spike

-- -- 7 180 0 20 121

Non-Pharmaceutical Compounds 51

Table 13. Alkylphenol and other organic compound concentrations in samples collected during the riverbank filtration study, Platte 

River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-nonylphenol 

(ng/L)

4-n-octylphenol 

(ng/L)

Caffeine 

(ng/L)

4-OP1EO 

(ng/L)

4-NP1EO 

(ng/L)

Laboratory reporting level 10 10 10 10 10

410322096190103 Cattle feedlot lagoon 8/15/02 0900 9,000 <10 59 17 <10

410322096190104 Hog confinement 

lagoon

8/15/02 1230 10,000 <10 <10 <10 <10

06803496 Wastewater treatment 

plant effluent

8/14/02 0900 14,000 <10 22,000 97 14,000

06801000 Platte River near 

Ashland

8/12/02 1130 2,100 <10 <10 E8 <10

06805000 Salt Creek near 

Ashland

8/13/02 1000 5,000 <10 2,600 19 <10

Laboratory reagent blanks

Distilled water blank -- -- 83 <10 <10 15 <10

Distilled water blank -- -- 48 <10 <10 <10 <10

Distilled water blank -- -- 15 <10 <10 <10 <10

Laboratory reagent spikes (% rec) (% rec) (% rec) (% rec) (% rec)

Distilled water blank 

+ spike

-- -- 160 200 320 170 210

Distilled water blank 

+ spike

-- -- 110 120 200 140 180

Station number Sample name Date Time

Triclosan 

(ng/L)

 4-OP2EO 

(ng/L)

Bisphenol A 

(ng/L)

4-NP2EO 

(ng/L)

4-OP3EO 

(ng/L)

Laboratory reporting level 10 10 10 10 10

410322096190103 Cattle feedlot lagoon 8/15/02 0900 20 55 620 <10 <10

410322096190104 Hog confinement 

lagoon

8/15/02 1230 74 <10 390 <10 <10

06803496 Wastewater treatment 

plant effluent

8/14/02 900 1,400 <10 1,400 15,700 180

06801000 Platte River near 

Ashland

8/12/02 1130 10 <10 15 <10 <10

06805000 Salt Creek near Ashland8/13/02 1000 54 92 63 <10 45

Laboratory reagent blanks

Distilled water blank -- -- <10 <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10 <10

Laboratory reagent spikes (% rec) (% rec) (% rec) (% rec) (% rec)

Distilled water blank 

+ spike

-- -- 170 280 250 240 210

Distilled water blank 

+ spike

-- -- 99 300 210 270 180

52 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 13. Alkylphenol and other organic compound concentrations in samples collected during the riverbank filtration study, Platte 

River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-NP3EO

(ng/L)

4-OP4EO

(ng/L)

4-NP4EO

(ng/L)

4-OP5EO

(ng/L)

Laboratory reporting level 10 10 10 10

410322096190103 Cattle feedlot lagoon 8/15/02 0900 <10 <10 <10 <10

410322096190104 Hog confinement 

lagoon

8/15/02 1230 <10 <10 <10 <10

06803496 Wastewater treatment 

plant effluent

8/14/02 900 5,000 <10 1700 <10

06801000 Platte River near 

Ashland

8/12/02 1130 <10 <10 <10 <10

06805000 Salt Creek near 

Ashland

8/13/02 1000 <10 <10 <10 <10

Laboratory reagent blanks

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Laboratory reagent spikes (% rec) (% rec) (% rec) (% rec)

Distilled water blank 

+ spike

-- -- 270 170 180 110

Distilled water blank 

+ spike

-- -- 220 110 130 70

Return to text

Non-Pharmaceutical Compounds 53

Table 13. Alkylphenol and other organic compound concentrations in samples collected during the riverbank filtration study, Platte 

River, Nebraska, 2002 to 2005.—Continued
Table 14. Summary statistics of hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.

[Summary statistics are based on detected concentrations; All concentrations in nanograms per liter; LRL, Laboratory reporting level ; n, number of samples ; det, number of detections; max, maximum; med, median; std. dev., standard deviation; na, not applicable; SS, surrogate spike, units in percent recovery]

Constituent MDL

410322096190103

Cattle feedlot lagoon

410322096190104

Hog confinement lagoon

06803496

Wastewater treatment plant effluent

n det max med mean

std.

dev. n det max med mean

std.

dev. n det max med mean

std.

dev.

Wastewater samples

Diethylstilbestrol 10 3 0 na na na na 3 0 na na na na 4 0 na na na nacis-Androsterone 10 3 0 na na na na 3 0 na na na na 4 1 38 38 38 na17-

α-Estradiol 10 3 0 na na na na 3 0 na na na na 4 0 na na na na

Epitestosterone 10 3 0 na na na na 3 0 na na na na 4 0 na na na naStanalone 10 3 0 na na na na 3 0 na na na na 4 1 53 53 53 na17-β-Estradiol 10 3 0 na na na na 3 0 na na na na 4 2 42 30 30 16Estrone 10 3 0 na na na na 3 0 na na na na 4 0 na na na naEquilin 10 3 0 na na na na 3 0 na na na na 4 0 na na na naTestosterone 10 3 0 na na na na 3 1 69 69 69 na 4 0 na na na na4-Androstene3,17-dione 10 3 0 na na na na 3 0 na na na na 4 0 na na na naMestranol 10 3 0 na na na na 3 0 na na na na 4 0 na na na naTrenbolone 10 3 0 na na na na 3 0 na na na na 4 0 na na na na19-Norethisterone 10 3 0 na na na na 3 0 na na na na 4 0 na na na naEquilenin 10 3 0 na na na na 3 0 na na na na 4 0 na na na na17-

α-Ethynylestradiol 10 3 0 na na na na 3 0 na na na na 4 0 na na na na

11-Ketotestosterone 10 3 0 na na na na 3 0 na na na na 4 0 na na na naEstriol 10 3 0 na na na na 3 0 na na na na 4 1 44 44 44 naProgestrone 10 3 0 na na na na 3 0 na na na na 4 0 na na na na3-β-Coprostanol 10 3 3 22,000 4,500 8,950 11,490 3 3 15,000 10,000 10,870 3,780 4 4 12,000 6,100 6,270 5,460Cholesterol 10 3 3 56,000 5,300 20,600 30,740 3 3 8,300 4,100 4,900 3,080 4 4 13,000 7,600 7,530 4,770D4-17-Estradiol (SS)

1 3 na 250 1 84 144 3 na 180 5 62 102 4 na 170 73 91 56

54 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Constituent MDL

410322096190103

Cattle feedlot lagoon

410322096190104

Hog confinement lagoon

06803496

wastewater treatment plant effluent

n det max med mean

std.

dev. n det max med mean

std.

dev. n det max med mean

std.

dev.

Wastewater samples—continued

D3-Testosterone (SS) 1 3 na 290 8 99 165 3 na 140 10 50 78 4 na 230 104 126 72D7-Cholesterol 

(SS)

1 3 na 290 36 109 158 3 na 110 82 64 57 4 na 170 88 99 51

Constituent LRL

06801000

Platte River near Ashland

06805000

Salt Creek near Ashland

n det max med mean

std.

dev. n det max med mean

std.

dev.

Surface-water samples

Diethylstilbestrol 10 7 0 na na na na 6 0 na na na nacis-Androsterone 10 7 0 na na na na 6 0 na na na na17-α-Estradiol 10 7 0 na na na na 6 0 na na na naEpitestosterone 10 7 0 na na na na 6 0 na na na naStanalone 10 7 0 na na na na 6 0 na na na na17-β-Estradiol 10 7 0 na na na na 6 0 na na na naEstrone 10 7 0 na na na na 6 0 na na na naEquilin 10 7 1 55 55 55 na 6 0 na na na naTestosterone 10 7 0 na na na na 6 0 na na na na4-Androstene3,17-dione 10 7 0 na na na na 6 0 na na na naMestranol 10 7 0 na na na na 6 0 na na na naTrenbolone 10 7 0 na na na na 6 0 na na na na19-Norethisterone 10 7 0 na na na na 6 0 na na na naEquilenin 10 7 1 E4 E4 E4 na 6 1 90 90 90 na17-α-Ethynylestradiol 10 7 0 na na na na 6 1 36 36 36 na

Table 14. Summary statistics of hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued

Non-Pharmaceutical Compounds 55
Constituent LRL

06801000

Platte River near Ashland

06805000

Salt Creek near Ashland

n det max med mean

std.

dev. n det max med mean

std.

dev.

Surface-water samples—continued

11-Ketotestosterone 10 7 0 na na na na 6 0 na na na naEstriol 10 7 0 na na na na 6 0 na na na naProgestrone 10 7 0 na na na na 6 0 na na na na3-β-Coprostanol 10 7 4 110 60 62 40 6 6 1,800 520 790 750Cholesterol 10 1 1 530 530 530 na 6 6 3,500 1,050 1,450 1,170D4-17-Estradiol (SS)

1 7 na 170 40 79 74 6 na 200 80 93 68

D3-Testosterone (SS)

1 7 na 260 100 112 98 6 na 240 110 110 101

D7-Cholesterol (SS)

1 7 na 200 160 130 64 6 na 240 160 162 60

Constituent LRL

410322096191701

Well W90-1H

410349096202101

Well W49-9

410315096193501

Well W54-10

n det max med mean

std.

dev. n det max med mean

std.

dev. n det max med mean

std.

dev.

Ground-water samples

Diethylstilbestrol 10 3 0 na na na na 3 0 na na na na 3 0 na na na nacis-Androsterone 10 3 0 na na na na 3 0 na na na na 3 0 na na na na17-

α-Estradiol 10 3 0 na na na na 3 0 na na na na 3 0 na na na na

Epitestosterone 10 3 0 na na na na 3 0 na na na na 3 0 na na na naStanalone 10 3 0 na na na na 3 0 na na na na 3 0 na na na na17-β-Estradiol 10 3 0 na na na na 3 0 na na na na 3 0 na na na naEstrone 10 3 0 na na na na 3 0 na na na na 3 0 na na na naEquilin 10 3 0 na na na na 3 0 na na na na 3 0 na na na naTestosterone 10 3 0 na na na na 3 0 na na na na 3 0 na na na na

56 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 14. Summary statistics of hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Constituent LRL

410322096191701

Well W90-1H

410349096202101

Well W49-9

410315096193501

Well W54-10

n det max med mean

std.

dev. n det max med mean

std.

dev. n det max med mean

std.

dev.

Ground-water samples—continued

4-Androstene3,17-dione 10 3 0 na na na na 3 0 na na na na 3 0 na na na naMestranol 10 3 0 na na na na 3 0 na na na na 3 0 na na na naTrenbolone 10 3 0 na na na na 3 0 na na na na 3 0 na na na na19-Norethisterone 10 3 0 na na na na 3 0 na na na na 3 0 na na na naEquilenin 10 3 0 na na na na 3 0 na na na na 3 0 na na na na17-α-Ethynylestradiol 10 3 0 na na na na 3 0 na na na na 3 0 na na na na11-Ketotestosterone 10 3 0 na na na na 3 0 na na na na 3 0 na na na naEstriol 10 3 0 na na na na 3 0 na na na na 3 0 na na na naProgestrone 10 3 0 na na na na 3 0 na na na na 3 0 na na na na3-β-Coprostanol 10 3 0 na na na na 3 0 na na na na 3 0 na na na naCholesterol 10 0 0 na na na na 0 0 na na na na 0 0 na na na naD4-17-Estradiol 

(SS)

1 3 na 150 110 103 51 3 na 170 110 110 60 3 na 99 97 81 30

D3-Testosterone (SS) 1 3 na 170 100 109 57 3 na 180 130 123 61 3 na 130 110 98 39D7-Cholesterol 

(SS)

1 3 na 190 160 163 25 3 na 200 160 167 31 3 na 150 140 140 10

Constituent LRL

410315096190101

Raw water

410315096190102

Finished water

n det max med mean

std.

dev. n det max med mean

std.

dev.

Drinking-water samples

Diethylstilbestrol 10 3 0 na na na na 3 0 na na na nacis-Androsterone 10 3 0 na na na na 3 0 na na na na

Non-Pharmaceutical Compounds 57

Table 14. Summary statistics of hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Constituent LRL

410315096190101

Raw water

410315096190102

Finished water

n det max med mean

std.

dev. n det max med mean

std.

dev.

Drinking-water samples—continued

17-

α-Estradiol 10 3 0 na na na na 3 0 na na na na

Epitestosterone 10 3 0 na na na na 3 0 na na na naStanalone 10 3 0 na na na na 3 0 na na na na17-β-Estradiol 10 3 0 na na na na 3 0 na na na naEstrone 10 3 0 na na na na 3 0 na na na naEquilin 10 3 0 na na na na 3 0 na na na naTestosterone 10 3 0 na na na na 3 0 na na na na4-Androstene3,17-dione 10 3 0 na na na na 3 0 na na na naMestranol 10 3 0 na na na na 3 0 na na na naTrenbolone 10 3 0 na na na na 3 0 na na na na19-Norethisterone 10 3 0 na na na na 3 0 na na na naEquilenin 10 3 0 na na na na 3 0 na na na na17-

α-Ethynylestradiol 10 3 1 22 22 22 na 3 0 na na na na

11-Ketotestosterone 10 3 0 na na na na 3 0 na na na naEstriol 10 3 0 na na na na 3 0 na na na naProgestrone 10 3 0 na na na na 3 0 na na na na3-β-Coprostanol 10 3 0 na na na na 3 0 na na na naCholesterol 10 0 0 na na na na 1 0 na na na naD4-17-Estradiol 

(SS)

1 3 na 130 51 73 49 3 na 130 29 61 60

D3-Testosterone (SS)

1 3 na 180 73 102 68 3 na 210 64 109 88

D7-Cholesterol 

(SS)

1 3 na 150 80 89 57 3 na 310 140 168 130

Return to text

58 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2 Table 14. Summary statistics of hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.

[SS, surrogate spike; % rec, percent recovery; ng/L, nanograms per liter; HM, high sample matrix prevented quantitation; <, less than; --, sample not analyzed]

Station number Sample name Date Time

D4-17-

Estradiol (SS)

(% rec)

D3-Testosterone (SS)

(% rec)

D7-Cholesterol (SS)

(% rec)

Diethylstilbestrol

(ng/L)

Method detection limit --> 1 1 1 10

410322096190103 Cattle feedlot lagoon 2/14/02 0900 HM HM HM HM

5/9/02 0900 0 0 0 <10

8/15/02 0900 1 8 290 <10

8/23/02 0900 -- -- -- --

5/22/03 0900 250 290 36 <10

410322096190104 Hog confinement lagoon 2/14/02 1400 HM HM HM HM

5/9/02 1330 0 0 0 <10

8/15/02 1230 5 10 82 <10

8/23/02 1600 -- -- -- --

5/22/03 1430 180 140 110 <10

06803496 Wastewater-treatment 

plant effluent

2/13/02 0900 -- -- -- --

5/8/02 0830 170 230 170 <10

8/14/02 0900 93 65 98 <10

8/22/02 0900 52 110 51 <10

5/21/03 1030 49 98 78 <10

06801000 Platte River near Ashland 12/10/01 1000 -- -- -- --

1/7/02 1200 -- -- -- --

2/11/02 1000 170 130 200 <10

3/11/02 1000 -- -- -- --

4/8/02 1100 -- -- -- --

5/6/02 1030 130 260 170 <10

6/11/02 1030 -- -- -- --

7/9/02 1000 -- -- -- --

8/12/02 1130 2 0 80 <10

8/21/02 1100 25 0 160 <10

9/9/02 0930 -- -- -- --

10/16/02 0930 -- -- -- --

11/11/02 1030 170 210 190 <10

4/23/03 1000 20 84 53 <10

5/20/03 1030 40 100 57 <10

06805000 Salt Creek near Ashland 2/12/02 1000 130 140 160 <10

5/7/02 1000 120 200 150 <10

8/13/02 1000 31 0 160 <10

8/20/02 1000 41 0 200 <10

11/12/02 1000 200 240 240 <10

4/24/03 0930 37 80 61 <10

412411097165601 Loup Power Canal 4/22/03 1030 24 91 56 <10

Non-Pharmaceutical Compounds 59
Station number Sample name Date Time

D4-17-

Estradiol (SS)

(% rec)

D3-Testosterone (SS)

(% rec)

D7-Cholesterol (SS)

(% rec)

Diethylstilbestrol

(ng/L)

Method detection limit --> 1 1 1 10

410547096254801 G-040474-Memphis, 

2/19/02

12/17/01 0730 -- -- -- --

1/14/02 0730 -- -- -- --

2/19/02 0730 130 61 150 <10

3/18/02 0730 -- -- -- --

4/15/02 0730 -- -- -- --

6/17/02 0105 -- -- -- --

8/19/02 0730 42 56 130 <10

9/16/02 0730 -- -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- -- --

1/14/02 920 -- -- -- --

2/20/02 0900 150 100 190 <10

3/18/02 0930 -- -- -- --

4/15/02 0930 -- -- -- --

5/13/02 0900 110 170 140 <10

6/17/02 0930 -- -- -- --

7/16/02 0940 -- -- -- --

8/19/02 1000 49 58 160 <10

8/28/02 0830 -- -- -- --

9/16/02 1020 -- -- -- --

10/23/02 0930 -- -- -- --

11/18/02 0900 -- -- -- --

4/30/03 0900 -- -- -- --

5/27/03 1030 -- -- -- --

410315096193501 W49-9 12/17/01 1120 -- -- -- --

1/14/01 1110 -- -- -- --

2/20/02 1230 170 130 200 <10

3/18/02 1120 -- -- -- --

4/15/02 1150 -- -- -- --

5/13/02 1200 110 180 140 <10

6/17/02 1150 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1330 50 59 160 <10

8/28/02 1230 -- -- -- --

9/16/02 1130 -- -- -- --

10/23/02 1200 -- -- -- --

11/18/02 1230 -- -- -- --

4/30/03 1230 -- -- -- --

5/27/03 1300 -- -- -- --

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued

60 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2
Station number Sample name Date Time

D4-17-

Estradiol (SS)

(% rec)

D3-Testosterone (SS)

(% rec)

D7-Cholesterol (SS)

(% rec)

Diethylstilbestrol

(ng/L)

Method detection limit --> 1 1 1 10

410349096202101 W54-10 12/17/01 1030 -- -- -- --

1/14/02 1020 -- -- -- --

2/20/02 1100 99 110 150 <10

3/18/02 1030 -- -- -- --

4/15/02 1050 -- -- -- --

5/13/02 1030 97 130 130 <10

6/17/02 1050 -- -- -- --

7/16/02 1130 -- -- -- --

8/19/02 1200 46 54 140 <10

8/28/02 1100 -- -- -- --

9/16/02 1100 -- -- -- --

10/23/02 1040 -- -- -- --

11/18/02 1100 -- -- -- --

4/30/03 1130 -- -- -- --

5/27/03 1130 -- -- -- --

410315096190101 Raw water 12/17/01 1215 -- -- -- --

1/14/02 1210 -- -- -- --

2/19/02 1030 -- -- -- --

3/18/02 1220 -- -- -- --

4/15/02 1240 -- -- -- --

5/13/02 1400 130 180 150 <10

6/17/02 1300 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1500 40 53 38 <10

8/28/02 1330 -- -- -- --

9/16/02 1230 -- -- -- --

10/23/02 1300 -- -- -- --

11/18/02 1330 -- -- -- --

4/30/03 1330 -- -- -- --

5/27/03 1500 51 73 80 <10

410315096190102 Finished water 12/17/01 1230 -- -- -- --

1/14/02 1230 -- -- -- --

2/19/02 0930 -- -- -- --

3/18/02 1240 -- -- -- --

4/15/02 1310 -- -- -- --

5/13/02 1500 130 210 310 <10

6/17/02 1330 -- -- -- --

7/16/02 1330 -- -- -- --

Non-Pharmaceutical Compounds 61

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

D4-17-

Estradiol (SS)

(% rec)

D3-Testosterone (SS)

(% rec)

D7-Cholesterol (SS)

(% rec)

Diethylstilbestrol

(ng/L)

Method detection limit --> 1 1 1 10

410315096190102 Finished water 8/19/02 1600 29 64 140 <10

8/28/02 1500 -- -- -- --

9/16/02 1300 -- -- -- --

10/23/02 1330 -- -- -- --

11/18/02 1430 -- -- -- --

4/30/03 1400 -- -- -- --

5/27/03 1400 25 52 54 <10

Quality assurance samples

Blanks Distilled water blank -- -- 100 110 45 <10

Distilled water blank -- -- 24 47 56 <10

Distilled water blank -- -- 150 210 150 <10

Distilled water blank -- -- 60 130 71 <10

Distilled water blank -- -- 110 120 80 <10

Distilled water blank -- -- 57 100 48 <10

Distilled water blank -- -- 0 0 0 <10

Distilled water blank -- -- -- -- -- <10

Distilled water blank -- -- -- -- -- <10

Distilled water blank -- -- -- -- -- <10

Distilled water blank -- -- -- -- -- <10

Distilled water blank -- -- -- -- -- <10

Distilled water blank -- -- 22 39 17 <10

Distilled water blank -- -- 20 28 15 <10

Distilled water blank -- -- 21 33 15 <10

Distilled water blank -- -- 32 50 15 <10

Distilled water blank -- -- 40 58 26 <10

Spikes Distilled water blank + 

100 ng/L spike

-- -- 162 190 72 60

Distilled water blank + 

100 ng/L spike

-- -- 110 120 78 47

Distilled water blank + 

100 ng/L spike

-- -- 93 100 62 65

Distilled water blank + 

100 ng/L spike

-- -- 90 83 19 64

Distilled water blank + 

100 ng/L spike

-- -- 91 89 23 67

Distilled water blank + 

100 ng/L spike

-- -- 71 67 22 38

Distilled water blank + 

100 ng/L spike

-- -- 100 99 39 62

Distilled water blank + 

10 ng/L spike

-- -- 170 160 59 82

62 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

cis-Androsterone (ng/L)17-α-Estradiol 

(ng/L)

Epitestosterone (ng/L)Stanalone 

(ng/L)

Method detection limit --> 10 10 10 10

410322096190103 Cattle feedlot lagoon 2/14/02 0900 HM HM HM HM

5/9/02 0900 <10 <10 <10 <10

8/15/02 0900 <10 <10 <10 <10

8/23/02 0900 -- -- -- --

5/22/03 0900 <10 <10 <10 <10

410322096190104 Hog confinement lagoon 2/14/02 1400 HM HM HM HM

5/9/02 1330 <10 <10 <10 <10

8/15/02 1230 <10 <10 <10 <10

8/23/02 1600 -- -- -- --

5/22/03 1430 <10 <10 <10 <10

06803496 Wastewater-treatment 

plant effluent

2/13/02 0900 -- -- -- --

5/8/02 0830 <10 <10 <10 53

8/14/02 0900 <10 <10 <10 <10

8/22/02 0900 38 <10 <10 <10

5/21/03 1030 <10 <10 <10 <10

06801000 Platte River near Ashland 12/10/01 1000 -- -- -- --

1/7/02 1200 -- -- -- --

2/11/02 1000 <10 <10 <10 <10

3/11/02 1000 -- -- -- --

4/8/02 1100 -- -- -- --

5/6/02 1030 <10 <10 <10 <10

6/11/02 1030 -- -- -- --

7/9/02 1000 -- -- -- --

8/12/02 1130 <10 <10 <10 <10

8/21/02 1100 <10 <10 <10 <10

9/9/02 0930 -- -- -- --

10/16/02 0930 -- -- -- --

11/11/02 1030 <10 <10 <10 <10

4/23/03 1000 <10 <10 <10 <10

5/20/03 1030 <10 <10 <10 <10

06805000 Salt Creek near Ashland 2/12/02 1000 <10 <10 <10 <10

5/7/02 1000 <10 <10 <10 <10

8/13/02 1000 <10 <10 <10 <10

8/20/02 1000 <10 <10 <10 <10

11/12/02 1000 <10 <10 <10 <10

4/24/03 0930 <10 <10 <10 <10

412411097165601 Loup Power Canal 4/22/03 1030 <10 <10 <10 <10

Non-Pharmaceutical Compounds 63

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

cis-Androsterone (ng/L)17-α-Estradiol 

(ng/L)

Epitestosterone (ng/L)Stanalone 

(ng/L)

Method detection limit --> 10 10 10 10

410547096254801 G-040474-Memphis, 

2/19/02

12/17/01 0730 -- -- -- --

1/14/02 0730 -- -- -- --

2/19/02 0730 <10 <10 <10 <10

3/18/02 0730 -- -- -- --

4/15/02 0730 -- -- -- --

6/17/02 0105 -- -- -- --

8/19/02 0730 <10 <10 <10 <10

9/16/02 0730 -- -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- -- --

1/14/02 0920 -- -- -- --

2/20/02 0900 <10 <10 <10 <10

3/18/02 0930 -- -- -- --

4/15/02 0930 -- -- -- --

5/13/02 0900 <10 <10 <10 <10

6/17/02 0930 -- -- -- --

7/16/02 0940 -- -- -- --

8/19/02 1000 <10 <10 <10 <10

8/28/02 0830 -- -- -- --

9/16/02 1020 -- -- -- --

10/23/02 0930 -- -- -- --

11/18/02 0900 -- -- -- --

4/30/03 0900 -- -- -- --

5/27/03 1030 -- -- -- --

410315096193501 W49-9 12/17/01 1120 -- -- -- --

1/14/01 1110 -- -- -- --

2/20/02 1230 <10 <10 <10 <10

3/18/02 1120 -- -- -- --

4/15/02 1150 -- -- -- --

5/13/02 1200 <10 <10 <10 <10

6/17/02 1150 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1330 <10 <10 <10 <10

8/28/02 1230 -- -- -- --

9/16/02 1130 -- -- -- --

10/23/02 1200 -- -- -- --

11/18/02 1230 -- -- -- --

4/30/03 1230 -- -- -- --

5/27/03 1300 -- -- -- --

64 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

cis-Androsterone (ng/L)17-α-Estradiol 

(ng/L)

Epitestosterone (ng/L)Stanalone 

(ng/L)

Method detection limit --> 10 10 10 10

410349096202101 W54-10 12/17/01 1030 -- -- -- --

1/14/02 1020 -- -- -- --

2/20/02 1100 <10 <10 <10 <10

3/18/02 1030 -- -- -- --

4/15/02 1050 -- -- -- --

5/13/02 1030 <10 <10 <10 <10

6/17/02 1050 -- -- -- --

7/16/02 1130 -- -- -- --

8/19/02 1200 <10 <10 <10 <10

8/28/02 1100 -- -- -- --

9/16/02 1100 -- -- -- --

10/23/02 1040 -- -- -- --

11/18/02 1100 -- -- -- --

4/30/03 1130 -- -- -- --

5/27/03 1130 -- -- -- --

410315096190101 Raw water 12/17/01 1215 -- -- -- --

1/14/02 1210 -- -- -- --

2/19/02 1030 -- -- -- --

3/18/02 1220 -- -- -- --

4/15/02 1240 -- -- -- --

5/13/02 1400 <10 <10 <10 <10

6/17/02 1300 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1500 <10 <10 <10 <10

8/28/02 1330 -- -- -- --

9/16/02 1230 -- -- -- --

10/23/02 1300 -- -- -- --

11/18/02 1330 -- -- -- --

4/30/03 1330 -- -- -- --

5/27/03 1500 <10 <10 <10 <10

410315096190102 Finished water 12/17/01 1230 -- -- -- --

1/14/02 1230 -- -- -- --

2/19/02 0930 -- -- -- --

3/18/02 1240 -- -- -- --

4/15/02 1310 -- -- -- --

5/13/02 1500 <10 <10 <10 <10

6/17/02 1330 -- -- -- --

7/16/02 1330 -- -- -- --

8/19/02 1600 <10 <10 <10 <10

Non-Pharmaceutical Compounds 65

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

cis-Androsterone (ng/L)17-α-Estradiol 

(ng/L)

Epitestosterone (ng/L)Stanalone 

(ng/L)

Method detection limit --> 10 10 10 10

410315096190102 Finished water 8/28/02 1500 -- -- -- --

9/16/02 1300 -- -- -- --

10/23/02 1330 -- -- -- --

11/18/02 1430 -- -- -- --

4/30/03 1400 -- -- -- --

5/27/03 1400 <10 <10 <10 <10

Quality assurance samples

Blanks Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Spikes Distilled water blank + 

100 ng/L spike

-- -- 220 130 190 130

Distilled water blank + 

100 ng/L spike

-- -- 150 92 130 81

Distilled water blank + 

100 ng/L spike

-- -- 110 96 120 78

Distilled water blank + 

100 ng/L spike

-- -- 87 90 110 69

Distilled water blank + 

100 ng/L spike

-- -- 95 93 120 76

Distilled water blank + 

100 ng/L spike

-- -- 57 62 78 50

Distilled water blank + 

100 ng/L spike

-- -- 100 100 120 81

Distilled water blank + 

10 ng/L spike

-- -- 190 160 200 150

66 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

17-β-Estradiol 

(ng/L)

Estrone

(ng/L)

Equilin

(ng/L)

Testosterone 

(ng/L)

Method detection limit --> 10 10 10 10

410322096190103 Cattle feedlot lagoon 2/14/02 0900 HM HM HM HM

5/9/02 0900 <10 <10 <10 <10

8/15/02 0900 <10 <10 <10 <10

8/23/02 0900 -- -- -- --

5/22/03 0900 <10 <10 <10 <10

410322096190104 Hog confinement lagoon 2/14/02 1400 HM HM HM HM

5/9/02 1330 <10 <10 <10 <10

8/15/02 1230 <10 <10 <10 69

8/23/02 1600 -- -- -- --

5/22/03 1430 <10 <10 <10 <10

06803496 Wastewater-treatment 

plant effluent

2/13/02 0900 -- -- -- --

5/8/02 0830 <10 <10 <10 <10

8/14/02 0900 42 <10 <10 <10

8/22/02 0900 19 <10 <10 <10

5/21/03 1030 <10 <10 <10 <10

06801000 Platte River near Ashland 12/10/01 1000 -- -- -- --

1/7/02 1200 -- -- -- --

2/11/02 1000 <10 <10 <10 <10

3/11/02 1000 -- -- -- --

4/8/02 1100 -- -- -- --

5/6/02 1030 <10 <10 <10 <10

6/11/02 1030 -- -- -- --

7/9/02 1000 -- -- -- --

8/12/02 1130 <10 <10 <10 <10

8/21/02 1100 <10 <10 <10 <10

9/9/02 0930 -- -- -- --

10/16/02 0930 -- -- -- --

11/11/02 1030 <10 <10 <10 <10

4/23/03 1000 <10 <10 55 <10

5/20/03 1030 <10 <10 <10 <10

06805000 Salt Creek near Ashland 2/12/02 1000 <10 <10 <10 <10

5/7/02 1000 <10 <10 <10 <10

8/13/02 1000 <10 <10 <10 <10

8/20/02 1000 <10 <10 <10 <10

11/12/02 1000 <10 <10 <10 <10

4/24/03 0930 <10 <10 <10 <10

412411097165601 Loup Power Canal 4/22/03 1030 <10 <10 <10 <10

Non-Pharmaceutical Compounds 67

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

17-β-Estradiol 

(ng/L)

Estrone

(ng/L)

Equilin

(ng/L)

Testosterone 

(ng/L)

Method detection limit --> 10 10 10 10

410547096254801 G-040474-Memphis, 

2/19/02

12/17/01 0730 -- -- -- --

1/14/02 0730 -- -- -- --

2/19/02 0730 <10 <10 <10 <10

3/18/02 0730 -- -- -- --

4/15/02 0730 -- -- -- --

6/17/02 0105 -- -- -- --

8/19/02 0730 <10 <10 <10 <10

9/16/02 0730 -- -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- -- --

1/14/02 0920 -- -- -- --

2/20/02 0900 <10 <10 <10 <10

3/18/02 0930 -- -- -- --

4/15/02 0930 -- -- -- --

5/13/02 0900 <10 <10 <10 <10

6/17/02 0930 -- -- -- --

7/16/02 0940 -- -- -- --

8/19/02 1000 <10 <10 <10 <10

8/28/02 0830 -- -- -- --

9/16/02 1020 -- -- -- --

10/23/02 0930 -- -- -- --

11/18/02 0900 -- -- -- --

4/30/03 0900 -- -- -- --

5/27/03 1030 -- -- -- --

410315096193501 W49-9 12/17/01 1120 -- -- -- --

1/14/01 1110 -- -- -- --

2/20/02 1230 <10 <10 <10 <10

3/18/02 1120 -- -- -- --

4/15/02 1150 -- -- -- --

5/13/02 1200 <10 <10 <10 <10

6/17/02 1150 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1330 <10 <10 <10 <10

410315096193501 W49-9 8/28/02 1230 -- -- -- --

9/16/02 1130 -- -- -- --

10/23/02 1200 -- -- -- --

11/18/02 1230 -- -- -- --

4/30/03 1230 -- -- -- --

5/27/03 1300 -- -- -- --

68 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

17-β-Estradiol 

(ng/L)

Estrone

(ng/L)

Equilin

(ng/L)

Testosterone 

(ng/L)

Method detection limit --> 10 10 10 10

410349096202101 W54-10 12/17/01 1030 -- -- -- --

1/14/02 1020 -- -- -- --

2/20/02 1100 <10 <10 <10 <10

3/18/02 1030 -- -- -- --

4/15/02 1050 -- -- -- --

5/13/02 1030 <10 <10 <10 <10

6/17/02 1050 -- -- -- --

7/16/02 1130 -- -- -- --

8/19/02 1200 <10 <10 <10 <10

8/28/02 1100 -- -- -- --

9/16/02 1100 -- -- -- --

10/23/02 1040 -- -- -- --

11/18/02 1100 -- -- -- --

4/30/03 1130 -- -- -- --

5/27/03 1130 -- -- -- --

410315096190101 Raw water 12/17/01 1215 -- -- -- --

1/14/02 1210 -- -- -- --

2/19/02 1030 -- -- -- --

3/18/02 1220 -- -- -- --

4/15/02 1240 -- -- -- --

5/13/02 1400 <10 <10 <10 <10

6/17/02 1300 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1500 <10 <10 <10 <10

8/28/02 1330 -- -- -- --

9/16/02 1230 -- -- -- --

10/23/02 1300 -- -- -- --

11/18/02 1330 -- -- -- --

4/30/03 1330 -- -- -- --

5/27/03 1500 <10 <10 <10 <10

410315096190102 Finished water 12/17/01 1230 -- -- -- --

1/14/02 1230 -- -- -- --

2/19/02 0930 -- -- -- --

3/18/02 1240 -- -- -- --

4/15/02 1310 -- -- -- --

5/13/02 1500 <10 <10 <10 <10

6/17/02 1330 -- -- -- --

7/16/02 1330 -- -- -- --

8/19/02 1600 <10 <10 <10 <10

Non-Pharmaceutical Compounds 69

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

17-β-Estradiol 

(ng/L)

Estrone

(ng/L)

Equilin

(ng/L)

Testosterone 

(ng/L)

Method detection limit --> 10 10 10 10

410315096190102 Finished water 8/28/02 1500 -- -- -- --

9/16/02 1300 -- -- -- --

10/23/02 1330 -- -- -- --

11/18/02 1430 -- -- -- --

4/30/03 1400 -- -- -- --

5/27/03 1400 <10 <10 <10 <10

Quality assurance samples

Blanks Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Spikes Distilled water blank + 

100 ng/L spike

-- -- 200 240 200 240

Distilled water blank + 

100 ng/L spike

-- -- 140 160 130 170

Distilled water blank + 

100 ng/L spike

-- -- 120 120 84 130

Distilled water blank + 

100 ng/L spike

-- -- 100 110 77 110

Distilled water blank + 

100 ng/L spike

-- -- 110 120 79 120

Distilled water blank + 

100 ng/L spike

-- -- 85 90 64 84

Distilled water blank + 

100 ng/L spike

-- -- 120 130 86 120

Distilled water blank + 

10 ng/L spike

-- -- 230 260 180 220

70 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-Androstene3,17-dione 

(ng/L)

Mestranol 

(ng/L)

Trenbolone 

(ng/L)

19-Norethisterone

(ng/L)

Method detection limit --> 10 10 10 10

410322096190103 Cattle feedlot lagoon 2/14/02 0900 HM HM HM HM

5/9/02 0900 <10 <10 <10 <10

8/15/02 0900 <10 <10 <10 <10

8/23/02 0900 -- -- -- --

5/22/03 0900 <10 <10 <10 <10

410322096190104 Hog confinement lagoon 2/14/02 1400 HM HM HM HM

5/9/02 1330 <10 <10 <10 <10

8/15/02 1230 <10 <10 <10 <10

8/23/02 1600 -- -- -- --

5/22/03 1430 <10 <10 <10 <10

06803496 Wastewater-treatment 

plant effluent

2/13/02 0900 -- -- -- --

5/8/02 0830 <10 <10 <10 <10

8/14/02 0900 <10 <10 <10 <10

8/22/02 0900 <10 <10 <10 <10

5/21/03 1030 <10 <10 <10 <10

06801000 Platte River near Ashland 12/10/01 1000 -- -- -- --

1/7/02 1200 -- -- -- --

2/11/02 1000 <10 <10 <10 <10

3/11/02 1000 -- -- -- --

4/8/02 1100 -- -- -- --

5/6/02 1030 <10 <10 <10 <10

6/11/02 1030 -- -- -- --

7/9/02 1000 -- -- -- --

8/12/02 1130 <10 <10 <10 <10

8/21/02 1100 <10 <10 <10 <10

9/9/02 0930 -- -- -- --

10/16/02 0930 -- -- -- --

11/11/02 1030 <10 <10 <10 <10

4/23/03 1000 <10 <10 <10 <10

5/20/03 1030 <10 <10 <10 <10

06805000 Salt Creek near Ashland 2/12/02 1000 <10 <10 <10 <10

5/7/02 1000 <10 <10 <10 <10

8/13/02 1000 <10 <10 <10 <10

8/20/02 1000 <10 <10 <10 <10

11/12/02 1000 <10 <10 <10 <10

4/24/03 0930 <10 <10 <10 <10

412411097165601 Loup Power Canal 4/22/03 1030 <10 <10 <10 <10

Non-Pharmaceutical Compounds 71

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-Androstene3,17-dione 

(ng/L)

Mestranol 

(ng/L)

Trenbolone 

(ng/L)

19-Norethisterone

(ng/L)

Method detection limit --> 10 10 10 10

410547096254801 G-040474-Memphis, 

2/19/02

12/17/01 0730 -- -- -- --

1/14/02 0730 -- -- -- --

2/19/02 0730 <10 <10 <10 <10

3/18/02 0730 -- -- -- --

4/15/02 0730 -- -- -- --

6/17/02 0105 -- -- -- --

8/19/02 0730 <10 <10 <10 <10

9/16/02 0730 -- -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- -- --

1/14/02 0920 -- -- -- --

2/20/02 0900 <10 <10 <10 <10

3/18/02 0930 -- -- -- --

4/15/02 0930 -- -- -- --

5/13/02 0900 <10 <10 <10 <10

6/17/02 0930 -- -- -- --

7/16/02 0940 -- -- -- --

8/19/02 1000 <10 <10 <10 <10

8/28/02 0830 -- -- -- --

9/16/02 1020 -- -- -- --

10/23/02 0930 -- -- -- --

11/18/02 0900 -- -- -- --

4/30/03 0900 -- -- -- --

5/27/03 1030 -- -- -- --

410315096193501 W49-9 12/17/01 1120 -- -- -- --

1/14/01 1110 -- -- -- --

2/20/02 1230 <10 <10 <10 <10

3/18/02 1120 -- -- -- --

4/15/02 1150 -- -- -- --

5/13/02 1200 <10 <10 <10 <10

6/17/02 1150 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1330 <10 <10 <10 <10

8/28/02 1230 -- -- -- --

9/16/02 1130 -- -- -- --

10/23/02 1200 -- -- -- --

11/18/02 1230 -- -- -- --

4/30/03 1230 -- -- -- --

5/27/03 1300 -- -- -- --

72 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-Androstene3,17-dione 

(ng/L)

Mestranol 

(ng/L)

Trenbolone 

(ng/L)

19-Norethisterone

(ng/L)

Method detection limit --> 10 10 10 10

410349096202101 W54-10 12/17/01 1030 -- -- -- --

1/14/02 1020 -- -- -- --

2/20/02 1100 <10 <10 <10 <10

3/18/02 1030 -- -- -- --

4/15/02 1050 -- -- -- --

5/13/02 1030 <10 <10 <10 <10

6/17/02 1050 -- -- -- --

7/16/02 1130 -- -- -- --

8/19/02 1200 <10 <10 <10 <10

8/28/02 1100 -- -- -- --

9/16/02 1100 -- -- -- --

10/23/02 1040 -- -- -- --

11/18/02 1100 -- -- -- --

4/30/03 1130 -- -- -- --

5/27/03 1130 -- -- -- --

410315096190101 Raw water 12/17/01 1215 -- -- -- --

1/14/02 1210 -- -- -- --

2/19/02 1030 -- -- -- --

3/18/02 1220 -- -- -- --

4/15/02 1240 -- -- -- --

5/13/02 1400 <10 <10 <10 <10

6/17/02 1300 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1500 <10 <10 <10 <10

8/28/02 1330 -- -- -- --

9/16/02 1230 -- -- -- --

10/23/02 1300 -- -- -- --

11/18/02 1330 -- -- -- --

4/30/03 1330 -- -- -- --

5/27/03 1500 <10 <10 <10 <10

410315096190102 Finished water 12/17/01 1230 -- -- -- --

1/14/02 1230 -- -- -- --

2/19/02 0930 -- -- -- --

3/18/02 1240 -- -- -- --

4/15/02 1310 -- -- -- --

5/13/02 1500 <10 <10 <10 <10

6/17/02 1330 -- -- -- --

7/16/02 1330 -- -- -- --

Non-Pharmaceutical Compounds 73

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

4-Androstene3,17-dione 

(ng/L)

Mestranol 

(ng/L)

Trenbolone 

(ng/L)

19-Norethisterone

(ng/L)

Method detection limit --> 10 10 10 10

410315096190102—

Continued

Finished water 8/19/02 1600 <10 <10 <10 <10

8/28/02 1500 -- -- -- --

9/16/02 1300 -- -- -- --

10/23/02 1330 -- -- -- --

11/18/02 1430 -- -- -- --

4/30/03 1400 -- -- -- --

5/27/03 1400 <10 <10 <10 <10

Quality assurance samples

Blanks Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Spikes Distilled water blank + 

100 ng/L spike

-- -- 270 210 210 160

Distilled water blank + 

100 ng/L spike

-- -- 160 99 110 74

Distilled water blank + 

100 ng/L spike

-- -- 120 68 77 56

Distilled water blank + 

100 ng/L spike

-- -- 100 67 76 59

Distilled water blank + 

100 ng/L spike

-- -- 120 46 85 37

Distilled water blank + 

100 ng/L spike

-- -- 94 72 70 62

Distilled water blank + 

100 ng/L spike

-- -- 130 71 92 66

Distilled water blank + 

10 ng/L spike

-- -- 220 230 230 220

74 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample Name Date Time

Equilenin 

(ng/L)

17-α-Ethynylestradiol 

(ng/L)

11-Ketotestosterone

(ng/L)

Estriol

(ng/L)

Method detection limit --> 10 10 10 10

410322096190103 Cattle feedlot lagoon 2/14/02 0900 HM HM HM HM

5/9/02 0900 <10 <10 <10 <10

8/15/02 0900 <10 <10 <10 <10

8/23/02 0900 -- -- -- --

5/22/03 0900 <10 <10 <10 <10

410322096190104 Hog confinement lagoon 2/14/02 1400 HM HM HM HM

5/9/02 1330 <10 <10 <10 <10

8/15/02 1230 <10 <10 <10 <10

8/23/02 1600 -- -- -- --

5/22/03 1430 <10 <10 <10 <10

06803496 Wastewater-treatment 

plant effluent

2/13/02 0900 -- -- -- --

5/8/02 0830 <10 <10 <10 <10

8/14/02 0900 <10 130 <10 <10

8/22/02 0900 <10 <10 <10 <10

5/21/03 1030 <10 <10 <10 44

06801000 Platte River near Ashland 12/10/01 1000 -- -- -- --

1/7/02 1200 -- -- -- --

2/11/02 1000 <10 <10 <10 <10

3/11/02 1000 -- -- -- --

4/8/02 1100 -- -- -- --

5/6/02 1030 4.0 <10 <10 <10

6/11/02 1030 -- -- -- --

7/9/02 1000 -- -- -- --

8/12/02 1130 <10 <10 <10 <10

8/21/02 1100 <10 <10 <10 <10

9/9/02 0930 -- -- -- --

06801000 Platte River near Ashland 10/16/02 0930 -- -- -- --

11/11/02 1030 <10 <10 <10 <10

4/23/03 1000 <10 <10 <10 <10

5/20/03 1030 <10 <10 <10 <10

06805000 Salt Creek near Ashland 2/12/02 1000 <10 <10 <10 <10

5/7/02 1000 <10 <10 <10 <10

8/13/02 1000 <10 <10 <10 <10

8/20/02 1000 90 36 <10 <10

11/12/02 1000 <10 <10 <10 <10

4/24/03 0930 <10 <10 <10 <10

412411097165601 Loup Power Canal 4/22/03 1030 <10 <10 <10 <10

Non-Pharmaceutical Compounds 75

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample Name Date Time

Equilenin 

(ng/L)

17-α-Ethynylestradiol 

(ng/L)

11-Ketotestosterone

(ng/L)

Estriol

(ng/L)

Method detection limit --> 10 10 10 10

410547096254801 G-040474-Memphis, 

2/19/02

12/17/01 0730 -- -- -- --

1/14/02 0730 -- -- -- --

2/19/02 0730 <10 <10 <10 <10

3/18/02 0730 -- -- -- --

4/15/02 0730 -- -- -- --

6/17/02 0105 -- -- -- --

8/19/02 0730 <10 <10 <10 <10

9/16/02 0730 -- -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- -- --

1/14/02 0920 -- -- -- --

2/20/02 0900 <10 <10 <10 <10

3/18/02 0930 -- -- -- --

4/15/02 0930 -- -- -- --

5/13/02 0900 <10 <10 <10 <10

6/17/02 0930 -- -- -- --

7/16/02 0940 -- -- -- --

8/19/02 1000 <10 <10 <10 <10

8/28/02 0830 -- -- -- --

9/16/02 1020 -- -- -- --

10/23/02 0930 -- -- -- --

11/18/02 0900 -- -- -- --

4/30/03 0900 -- -- -- --

5/27/03 1030 -- -- -- --

410315096193501 W49-9 12/17/01 1120 -- -- -- --

1/14/01 1110 -- -- -- --

2/20/02 1230 <10 <10 <10 <10

3/18/02 1120 -- -- -- --

4/15/02 1150 -- -- -- --

5/13/02 1200 <10 <10 <10 <10

6/17/02 1150 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1330 <10 <10 <10 <10

8/28/02 1230 -- -- -- --

9/16/02 1130 -- -- -- --

10/23/02 1200 -- -- -- --

11/18/02 1230 -- -- -- --

4/30/03 1230 -- -- -- --

5/27/03 1300 -- -- -- --

76 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample Name Date Time

Equilenin 

(ng/L)

17-α-Ethynylestradiol 

(ng/L)

11-Ketotestosterone

(ng/L)

Estriol

(ng/L)

Method detection limit --> 10 10 10 10

410349096202101 W54-10 12/17/01 1030 -- -- -- --

1/14/02 1020 -- -- -- --

2/20/02 1100 <10 <10 <10 <10

3/18/02 1030 -- -- -- --

4/15/02 1050 -- -- -- --

5/13/02 1030 <10 <10 <10 <10

6/17/02 1050 -- -- -- --

7/16/02 1130 -- -- -- --

8/19/02 1200 <10 <10 <10 <10

8/28/02 1100 -- -- -- --

9/16/02 1100 -- -- -- --

10/23/02 1040 -- -- -- --

11/18/02 1100 -- -- -- --

4/30/03 1130 -- -- -- --

5/27/03 1130 -- -- -- --

410315096190101 Raw water 12/17/01 1215 -- -- -- --

1/14/02 1210 -- -- -- --

2/19/02 1030 -- -- -- --

3/18/02 1220 -- -- -- --

4/15/02 1240 -- -- -- --

5/13/02 1400 <10 <10 <10 <10

6/17/02 1300 -- -- -- --

7/16/02 1300 -- -- -- --

8/19/02 1500 <10 22 <10 <10

8/28/02 1330 -- -- -- --

9/16/02 1230 -- -- -- --

10/23/02 1300 -- -- -- --

11/18/02 1330 -- -- -- --

4/30/03 1330 -- -- -- --

5/27/03 1500 <10 <10 <10 <10

410315096190102 Finished water 12/17/01 1230 -- -- -- --

1/14/02 1230 -- -- -- --

2/19/02 0930 -- -- -- --

3/18/02 1240 -- -- -- --

4/15/02 1310 -- -- -- --

5/13/02 1500 <10 <10 <10 <10

6/17/02 1330 -- -- -- --

7/16/02 1330 -- -- -- --

Non-Pharmaceutical Compounds 77

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample Name Date Time

Equilenin 

(ng/L)

17-α-Ethynylestradiol 

(ng/L)

11-Ketotestosterone

(ng/L)

Estriol

(ng/L)

Method detection limit --> 10 10 10 10

410315096190102 Finished water 8/19/02 1600 <10 <10 <10 <10

8/28/02 1500 -- -- -- --

9/16/02 1300 -- -- -- --

10/23/02 1330 -- -- -- --

11/18/02 1430 -- -- -- --

4/30/03 1400 -- -- -- --

5/27/03 1400 <10 <10 <10 <10

Quality assurance samples

Blanks Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Distilled water blank -- -- <10 <10 <10 <10

Spikes Distilled water blank + 

100 ng/L spike

-- -- 160 170 120 110

Distilled water blank + 

100 ng/L spike

-- -- 91 78 80 76

Distilled water blank + 

100 ng/L spike

-- -- 68 54 100 100

Distilled water blank + 

100 ng/L spike

-- -- 76 68 96 96

Distilled water blank + 

100 ng/L spike

-- -- 89 48 99 96

Distilled water blank + 

100 ng/L spike

-- -- 63 65 71 73

Distilled water blank + 

100 ng/L spike

-- -- 87 71 110 100

Distilled water blank + 

10 ng/L spike

-- -- 150 180 150 130

78 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

Progestrone 

(ng/L)

3-β-Coprostanol 

(ng/L)

Cholesterol

(ng/L)

Method detection limit --> 10 10 10

410322096190103 Cattle feedlot lagoon 2/14/02 0900 HM HM HM

5/9/02 0900 <10 22,000 56,000

8/15/02 0900 <10 4,500 5,300

8/23/02 0900 -- -- --

5/22/03 0900 <10 360 540

410322096190104 Hog confinement lagoon 2/14/02 1400 HM HM HM

5/9/02 1330 <10 15,000 8,300

8/15/02 1230 <10 10,000 4,100

8/23/02 1600 -- -- --

5/22/03 1430 <10 7,600 2,300

06803496 Wastewater-treatment 

plant effluent

2/13/02 0900 -- -- --

5/8/02 0830 <10 9,800 9,400

8/14/02 0900 <10 12,000 13,000

8/22/02 0900 <10 2,400 5,800

5/21/03 1030 <10 860 1,900

06801000 Platte River near Ashland 12/10/01 1000 -- -- --

1/7/02 1200 -- -- --

2/11/02 1000 <10 <10 B250

3/11/02 1000 -- -- --

4/8/02 1100 -- -- --

5/6/02 1030 <10 74 B320

6/11/02 1030 -- -- --

7/9/02 1000 -- -- --

8/12/02 1130 <10 <10 B310

8/21/02 1100 <10 110 530

9/9/02 0930 -- -- --

10/16/02 0930 -- -- --

11/11/02 1030 <10 47 B330

4/23/03 1000 <10 <10 B340

5/20/03 1030 <10 17 B180

06805000 Salt Creek near Ashland 2/12/02 1000 <10 770 1500

5/7/02 1000 <10 52 530

8/13/02 1000 <10 260 600

8/20/02 1000 <10 240 580

11/12/02 1000 <10 1,600 2,000

4/24/03 0930 <10 1,800 3,500

412411097165601 Loup Power Canal 4/22/03 1030 <10 53 640

Non-Pharmaceutical Compounds 79

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

Progestrone 

(ng/L)

3-β-Coprostanol 

(ng/L)

Cholesterol

(ng/L)

Method detection limit --> 10 10 10

410547096254801 G-040474-Memphis, 

2/19/02

12/17/01 0730 -- -- --

1/14/02 0730 -- -- --

2/19/02 0730 <10 <10 B42

3/18/02 0730 -- -- --

4/15/02 0730 -- -- --

6/17/02 0105 -- -- --

8/19/02 0730 <10 <10 B18

9/16/02 0730 -- -- --

410322096191701 W90-1H 12/17/01 0930 -- -- --

1/14/02 0920 -- -- --

2/20/02 0900 <10 <10 B98

3/18/02 0930 -- -- --

4/15/02 0930 -- -- --

5/13/02 0900 <10 <10 B21

6/17/02 0930 -- -- --

7/16/02 0940 -- -- --

8/19/02 1000 <10 <10 B16

8/28/02 0830 -- -- --

9/16/02 1020 -- -- --

10/23/02 0930 -- -- --

11/18/02 0900 -- -- --

4/30/03 0900 -- -- --

5/27/03 1030 -- -- --

410315096193501 W49-9 12/17/01 1120 -- -- --

1/14/01 1110 -- -- --

2/20/02 1230 <10 <10 B120

3/18/02 1120 -- -- --

4/15/02 1150 -- -- --

5/13/02 1200 <10 <10 B73

6/17/02 1150 -- -- --

7/16/02 1300 -- -- --

8/19/02 1330 <10 <10 B23

8/28/02 1230 -- -- --

9/16/02 1130 -- -- --

10/23/02 1200 -- -- --

11/18/02 1230 -- -- --

4/30/03 1230 -- -- --

5/27/03 1300 -- -- --

80 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
Station number Sample name Date Time

Progestrone 

(ng/L)

3-β-Coprostanol 

(ng/L)

Cholesterol

(ng/L)

Method detection limit --> 10 10 10

410349096202101 W54-10 12/17/01 1030 -- -- --

1/14/02 1020 -- -- --

2/20/02 1100 <10 <10 B44

3/18/02 1030 -- -- --

4/15/02 1050 -- -- --

5/13/02 1030 <10 <10 B62

6/17/02 1050 -- -- --

7/16/02 1130 -- -- --

8/19/02 1200 <10 <10 B13

8/28/02 1100 -- -- --

9/16/02 1100 -- -- --

10/23/02 1040 -- -- --

11/18/02 1100 -- -- --

4/30/03 1130 -- -- --

5/27/03 1130 -- -- --

410315096190101 Raw water 12/17/01 1215 -- -- --

1/14/02 1210 -- -- --

2/19/02 1030 -- -- --

3/18/02 1220 -- -- --

4/15/02 1240 -- -- --

5/13/02 1400 <10 <10 B74

6/17/02 1300 -- -- --

7/16/02 1300 -- -- --

8/19/02 1500 <10 <10 B12

410315096190101 Raw water 8/28/02 1330 -- -- --

9/16/02 1230 -- -- --

10/23/02 1300 -- -- --

11/18/02 1330 -- -- --

4/30/03 1330 -- -- --

5/27/03 1500 <10 <10 B120

410315096190102 Finished water 12/17/01 1230 -- -- --

1/14/02 1230 -- -- --

2/19/02 0930 -- -- --

3/18/02 1240 -- -- --

4/15/02 1310 -- -- --

5/13/02 1500 <10 <10 <10

6/17/02 1330 -- -- --

7/16/02 1330 -- -- --

8/19/02 1600 <10 <10 B7

Stable Hydrogen and Oxygen Isotope Ratios 81

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
82 Occurrence of Selected Compounds, Riverbank Filtration Study, Platte River, Nebraska, Volume 2

Station number Sample name Date Time

Progestrone 

(ng/L)

3-β-Coprostanol 

(ng/L)

Cholesterol

(ng/L)

410315096190102 Finished water 8/28/02 1500 -- -- --

9/16/02 1300 -- -- --

10/23/02 1330 -- -- --

11/18/02 1430 -- -- --

4/30/03 1400 -- -- --

5/27/03 1400 <10 <10 B66

Quality assurance samples

Blanks Distilled water blank -- -- <10 <10 34

Distilled water blank -- -- <10 <10 19

Distilled water blank -- -- <10 <10 0

Distilled water blank -- -- <10 <10 14

Distilled water blank -- -- <10 <10 0

Distilled water blank -- -- <10 <10 23

Distilled water blank -- -- <10 <10 7

Distilled water blank -- -- <10 <10 14

Distilled water blank -- -- <10 <10 14

Distilled water blank -- -- <10 <10 14

Distilled water blank -- -- <10 <10 16

Distilled water blank -- -- <10 <10 17

Distilled water blank -- -- <10 <10 7

Distilled water blank -- -- <10 <10 6

Distilled water blank -- -- <10 <10 8

Distilled water blank -- -- <10 <10 7

Distilled water blank -- -- <10 <10 15

Spikes Distilled water blank + 

100 ng/L spike

-- -- 130 76 85

Distilled water blank + 

100 ng/L spike

-- -- 100 75 89

Distilled water blank + 

100 ng/L spike

-- -- 110 61 86

Distilled water blank + 

100 ng/L spike

-- -- 87 22 25

Distilled water blank + 

100 ng/L spike

-- -- 96 27 33

Distilled water blank + 

100 ng/L spike

-- -- 65 27 36

Distilled water blank + 

100 ng/L spike

-- -- 100 44 52

Distilled water blank + 

10 ng/L spike

-- -- 84 66 380

Return to text

Table 15. Hormones in samples collected during the riverbank filtration study, Platte River, Nebraska, 2002 to 2005.—Continued
References 83

Table 16. Stable hydrogen and oxygen isotopic composition for samples collected during the 

riverbank filtration, Platte River, Nebraska, 2004 to 2005.

[--, samples lost during shipment; VSMOW, Vienna Standard Mean Ocean Water; SLAP, Standard Light Antarctic 

Precipitation; ‰, per mill; δ2H, Expressed relative to VSMOW reference water on a scale such that δ2H of SLAP 

reference water is –428 ‰ (Coplen, 1996); δ18O, expressed relative to VSMOW reference water on a scale such that 

δ18O of SLAP reference water is –55.5 ‰ (Coplen, 1996)]

Station number Station name

Collection date 

and time δ2H, per mill

δ18O, per 

mill

06801000 Platte River near Ashland 4/19/2004 0930 -59.5 -7.83

5/10/2004 1030 -53.9 -7.14

9/14/2004 0930 -48.7 -6.09

11/15/2004 1030 -63.5 -8.57

1/10/2005 1130 -- --

410322096191701 W90-1H 4/20/2004 1210 -66.3 -9.11

9/14/2004 1220 -54.0 -7.06

11/16/2004 1240 -57.4 -7.66

1/11/2005 1700 -- --

410315096193501 W54-10 4/20/2004 1625 -68.0 -9.11

9/15/2004 1330 -52.8 -6.70

11/16/2004 1345 -60.2 -8.10

1/11/2005 1430 -- --

410349096202101 W49-9 4/20/2004 1425 -47.9 -5.90

9/16/2004 1130 -51.4 -6.35

11/16/2004 1540 -50.9 -6.23

1/11/2005 1625 -- --

410537096202701 W56-5 4/20/2004 1525 -70.4 -9.42

9/15/2004 1230 -54.0 -6.96

11/16/2004 1445 -57.2 -7.56

1/11/2005 1545 -- --

410334096182801 Ashland Deep 4/20/2004 1110 -47.6 -5.98

9/15/2004 1230 -48.1 -5.84

11/16/2004 1540 -49.3 -5.88

1/11/2005 1320 -- --

Return to text

Vogel and others—Occurrence of Selected Pharmaceutical and Non-Pharmaceutical Compounds and Stable Hydrogen and Oxygen Isotope Ratios in a 

Riverbank Filtration Study, Platte River, Nebraska, 2002 to 2005, Volume 2—Data Series 141