TOXIC HOT SPOT STUDY
SOUTH PLATTE RIYER ALONG THE FRONT RANGE
AUGUST, OCTOBER 1982
ANALYTICAL SUPPORT BRANCH
ENVIRONMENTAL SERVICES DIVISION
U.S. ENVIRONMENTAL PROTECTION AGENCY
REGION VIII
DENVER, COLORADO
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980/2-84-001
October 1984
TOXIC HOT SPOT STUDY
SOUTH PLATTE RIVER ALONG THE FRONT RANGE
AUGUST, OCTOBER 1982
by
C.E. Runas
Maureen Martin
Dan McDonough
Loys Parrlsh
ANALYTICAL SUPPORT BRANCH
ENVIRONMENTAL SERVICES DIVISION
U.S. ENVIRONMENTAL PROTECTION AGENCY
REGION VIII
DENVER, COLORADO
This Report is available to the public through the National Technical
Information Service, U.S. Department of Commerce, Springfield, Virginia 22161.
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DISCLAIMER
This Report has been reviewed by the U.S. Environmental Protection Agency,
Region VIII, Environmental Services Division and Region Peer Review Committee,
Denver, Colorado, and is approved for publication. Mention of trade names or
commercial products does not constitute endorsement or recommendation for use.
1i
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CONTENTS
I SUMMARY AND CONCLUSIONS 1
II INTRODUCTION 3
III DESCRIPTION OF THE STUDY AREA 4
IV METHODS, 6
V RESULTS OF THE STUDY 8
Physical and Chemical Results 8
Biological Results 12
REFERENCES 23
APPENDICES 24
A List of Sampling Stations 24
B Physical, Chemical and Analytical Results 2^
C Biological Results 59
111
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ABSTRACT
To implement a Consent Decree between the EPA and the National Resources
Defense Council requiring that EPA identify waters which may have toxic
pollution problems, a two phase stu4y was designed to determine 1f any Toxic
Hot Spots exist 1n selected reaches of the South Platte River and selected
tributary and non-tributary streams along the Front Range. Phase I was
designed to determine if such "Toxic Hot Spots" exist and Phase II would focus
on those areas defined in Phase I as "Toxic Hot Spots" and would include
additional sampling locations.
In August and October, 1982, Phase I, a screening survey of the South
Platte River and selected tributary and non-tributary streams along the Front
Range, was conducted to determine where potential Toxic Hot Spots might
exist. The area of study extended from just downstream of Chatfield Reservoir
(THS-l/RM 334.9} to Kersey, Colorado (THS-24/RM 246.5). Samples of water,
sediment and aquatic invertebrates were obtained for chemical and biological
examination.
Results of the study indicate that no "Toxic Hot Spots" were found 1n the
study area. An intensive Phase II study was not implemented.
iv
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I. SUMMARY AND CONCLUSIONS
To implement a Consent Decree between the EPA and the National Resources
Defense Council requiring that EPA Identify waters which may have toxic
pollution problems, a two phase study was designed to determine If any Toxic
Hot Spots exist in selected reaches of the South Platte River and selected
tributary and non-tributary streams along the Front Range. Phase I was
designed to determine 1f such "Toxic Hot Spots" exist and Phase II would focus
on those areas defined 1n Phase I as "Toxic Hot Spots" and would include
additional sampling locations.
In August and October, 1982, Phase I, a screening survey of the South
Platte River and selected tributary and non-tributary streams along the Front
Range was conducted to determine where potential Toxic Hot Spots might exist.
The area of study extended from just downstream of Chatfield Reservoir
(THS-l/RM 334.9) to Kersey, Colorado (THS-24/RM 246.5). Samples of water,
sediment and aquatic invertebrates were obtained.
Fecal coliform densities exceeded Colorado's 2000/100 ml standard at the
station near Evans Avenue (THS-6/RM 324.7) and at the station near 19th and
Grlnnell (THS-8/RM-317.3) The Littleton/Englewood B1-City wastewater
treatment plant discharges to the river just upstream of THS-6 at RM 324.0.
Total iron concentrations in excess of Colorado's 1000 ug/1 standard were
measured in the South Platte River at the station near Evans Avenue (THS-6/RM
324.7), the station at 19th and Grlnnell (THS-8/RM 317.3) and at the station
near Henderson, Colorado (THS-13/RM 301.5). Total Iron concentrations in
excess of the standard set for the South Platte River were contributed by
Lakewood Gulch (5770 ug/1), Cherry Creek (3300 ug/1), and Sand Creek (1160
ug/1). Iron concentrations in the sediment were significantly high at all
stations.
With the exception of a 61 ug/1 lead concentration at the Lakewood Gulch
station (THS-5), lead concentrations at all other stations were not
quantifiable. The laboratory results for the remaining metals examined 1n
this study indicated that either the concentrations were less than the
detectable limits of the test or that the concentrations were such as to be
not quantifiable, based on approved methodology.
Gross alpha and gross beta determinations were used as indicators of
radioactive contamination in water samples from the South Platte River and
tributaries. Results Indicate that no significant radioactive contamination
was found at the sample stations in the study area.
1
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With the exception of the phthalate ester analysis at station THS-17 on
Coal Creek (58.2 ug/1), analyses for polychlorinated biphenyls (PCBs), phenol,
2,4,6 trichlorophenol, and phthalate esters indicated that either the
concentrations were less than the detectable limits of the test or that
something was there but in such small quantities as to be non-quantifiable.
Phthalate esters are organic compounds used extensively as plasticlzers in the
plastic Industry and as miticides and for insect control in agriculture. In
the case of the Coal Creek station (THS-17), analysis of the biological
samples does not seem to indicate any toxicity.
Analysis of the benthlc samples collected from the South Platte River and
selected tributary and non-tributary streams does not show any impact from
potential toxic hot spots. Problem areas Indicative of organic pollution were:
1. The reach of the South Platte River from downstream of the
Littleton/Englewood Bi-City wastewater treatment plant.
2. The reach of the South Platte River from downstream of the
Denver Metropolitan wastewater treatment plant.
Uncharacteristic high flows 1n the South Platte River preceeding the study
contributed greatly to upgrading the water quality throughout the study area.
Due to the improved water quality conditions with the increased flows, benthlc
organisms became more diverse. When the flows were reduced to facilitate the
biological sampling, benthlc organisms became concentrated, giving the
Impression of greater nionbers of organisms per square meter and inflated
organism densities. Given normal flow conditions, water quality could be
degraded to a greater degree by organic pollution than was Indicated by this
study.
Results of the physical, chemical and biological findings indicate that
no "Toxic Hot Spots" were found in the study area. There is no need for an
intensive Phase II study at this time.
2
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II. INTRODUCTION
A Consent Decree between the EPA and the National Resources Defense
Council required that EPA Identify toxicants, sources, and waters where point
source discharges of 129 priority pollutants may Interfere with attaining
water quality goals. As part of the Regions' program to Implement this
activity, the Fate Model Studies were conducted which screened river reaches
and resulted 1n toxic pollutant action recommendations. The toxic pollutant
action recommendations urged the Regions to collect environmental data for
specific river reaches which may have toxic pollution problems. To Implement
these recommendations, the Region conducted the Toxic Hot Spot Study. The
parameters for the Toxic Hot Spot Study were reduced from the 129 priority
pollutants to those toxic materials most generally found 1n the Fate Model
Studies and those of particular Interest to the Region.
Since the South Platte River along the Front Range Includes the most
highly developed areas 1n the Region, specific reaches of the river have a
strong potential to be Impacted by toxic materials. It was proposed that a
two phase study be conducted on the South Platte River along the Front Range
to determine if such "Toxic Hot Spots" exist and to what degree the river and
tributaries are Impacted.
Phase I was Initiated 1n August, 1982 to determine where potential
problem areas might exist, and Included a screening survey of selected reaches
of the South Platte River and selected tributary and non-tributary streams.
Phase II of the study to be accomplished the following year would focus on
those areas defined in Phase I as "Toxic Hot Spots". For Phase II, additional
sampling locations would be established within the suspected areas and up to
two weeks of Intensive sampling would be required per area.
In Phase I, samples of water and sediment were collected for analyses at
the Regional Laboratory at the Denver Federal Center. Certain physical and
chemical measurements were made on site at the time of sample collection.
Aquatic Invertebrate samples were collected at all sites 1n October, 1982.
These samples were returned to the Regional Laboratory for analyses. The
Corps of Engineers reduced the flow from Chatfield Reservoir to the South
Platte River for several days which permitted benthlc sampling, but could not
maintain lower flows long enough to allow for fish collection. Therefore the
fish samples, though scheduled to be part of the Phase I study, were not
obtained. Flow Information was obtained from USGS and the State of Colorado.
This report Is based on the results of the physical, chemical and
biological findings.
3
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III. DESCRIPTION OF THE STUDY AREA
The South Platte River Basin lies 1n northeastern Colorado, southeastern
Wyoming, and southwestern Nebraska with more than 80% located in Colorado.
This report 1s concerned only with that section of the South Platte River and
tributaries indicated in Figure 1.
The segment of the South Platte River included in the study extends from
just downstream of Chatfleld Reservoir (Colorado Highway 470, River Mile (RM)
334.9) through the Denver metropolitan area downstream to the gaging station
at the Highway 37 bridge (RM 246.5) approximately 1.5 miles (2.42 kilometers)
north of Kersey, Colorado.
Tributary streams in the study area, in downstream order, are: Plum
Creek, Bear Creek, Lakewood Gulch, Cherry Creek, Sand Creek, Clear Creek, Big
Dry Creek, St. Yrain Creek, Boulder Creek, Coal Creek, South Boulder Creek,
B1g Thompson River, Little Thompson River and the Cache la Poudre River.
Other non-tributary streams in the study area are O'Brian Canal, Burlington
Ditch, and Fossil Creek.
4
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IY. METHODS
In August and October, 1982, the South Platte River and selected
tributary and non-tributary streams were studied from just downstream of
Chatfield Reservoir (Colorado Hwy 470, THS-l/RM 334.9) through the Denver
metropolitan area downstream to Kersey, Colorado (THS-24/RM 246.5), Figures 1
and 2. Measurements for temperature and pH were made on-site using portable
meters. Grab type samples of water and sediment were collected from each
station for those parameters to be determined at the Regional Laboratory.
Samples were analyzed according to the methods outlined in "Methods for
Chemical Analysis of Water and Wastes" (EPA, 1979).
Several methods were utilized to collect qualitative samples of aquatic
invertebrates. Organisms were handpicked with forceps from selected rocks and
debris. Organisms were also captured by holding a dip net close to the bottom
of the riverbed and stirring up the substrate immediately upstream from the
net. Quantitative samples were collected with a Surber square foot sampler.
Three Surber square foot samples were collected from each sampling station
where the water depth did not exceed one foot (0.305 meters). The bottom
materials ranged from rock to shifting sand, and flows were sufficient to
carry organisms into the sampler. The uncharacteristic high flows, common
throughout the year, were not present at the time of the biological sampling.
The Corps of Engineers reduced the discharge from Chatfield Reservoir several
days prior to this part of the study to facilitate the biological sampling.
Samples were sieved in the field with a U.S. Standard No. 30 sieve and
organisms remaining on the sieve were placed in pint jars with a preservative
(water, 50%; alcohol, 40%; formalin, 10%). All samples were returned to the
Regional Laboratory at the Denver Federal Center for processing.
All sample collection, handling and preservation was along the guidelines
established in "A SOP for Field Samplers", "Methods for Chemical Analysis of
Water and Wastes", and "Biological Field and Laboratory Methods for Measuring
the Quality of Waters and Effluents".
A listing of the sample stations and analytical results are contained in
Appendices A and B. Benthic data is detailed in Appendix C.
6
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V. RESULTS OF THE STUDY
Physical and Chemical Results
Pollutants discharged to the South Platte River in the reach bounded by
THS-6/RM 324.7 and THS-8/RM 317.3 caused the 2000/100 ml fecal coliform
standard established by Colorado to be exceeded, Figure 3. Fecal coliform
bacteria numbered 30,000/100 ml within this reach (South Platte River at the
gaging station near 19th and Grinnell, THS-8/RM 317.3). Lakewood Gulch and
Cherry Creek enter the South Platte in this reach, however the fecal coliform
densities contributed by these tributaries did not exceed the 2000/100 ml
standard for the South Platte River during the study. The Littleton/Englewood
Bi-City wastewater treatment plant however discharges in this reach at RT-1
325.0.
At the station near Evans Avenue (THS-6/RM 324.7), the station near 19th
and Grinnell (THS-8/RM 317.3), and the station near Henderson, Colorado
(THS-13/RM 301.5) the 1000 ug/1 standard for total iron was exceeded, Figure
4. In these areas Lakewood Gulch contributed 5770 ug/1, Cherry Creek
contributed 3300 ug/1, and Sand Creek contributed 1160 ug/1 total iron to the
South Platte River. Throughout the entire reach of the South Platte River
included in this study, the sediment contained high iron concentrations,
Figure 5. A maximum concentration of 32,000 ug/g iron was in the sediment at
the station near Evans Avenue (THS-6/RM 324.7). At the sampling point on
Lakewood Gulch (THS-5) a concentration of 30,000 ug/g iron was measured in the
sediment. Lakewood Gulch is tributary to the South Platte River at RM 319.4.
With the exception of the 61 ug/1 total lead concentration at the
Lakewood Gulch station (THS-5), concentrations at all other stations indicated
something was there but not quantifiable. The laboratory results for the
remaining metals examined in this study indicated that either the
concentrations were less than the detectable limits of the test or that
something was there but in such small quantities as to be non-quantifiable,
based on approved methodology. Where values were determined, concentrations
did not exceed criteria where known, Appendix B.
The measurement of gross alpha and gross beta activity in water is a
significant tool in the detection of radioactive contamination and an
indication of the need for additional data on the concentrations of the more
hazardous radionuclides. Using gross alpha and gross beta as indicators of
radioactivity, no significant radioactive contamination was found in the
samples from the South Platte River and tributaries in the study areas.
8
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Figure 3- Bacterial Densities, South Platte River
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Included in the study was the analyses for several organic compounds.
These included polychlorinated biphenyls (PCBs), phenol, 2,4,6
trichlorophenol, and phthalate esters. These substances have wide
distribution in Industry and agriculture. Analytical results for these
substances, with one exception, indicated that either the concentrations were
less than the detectable limits of the test or that something was there but in
such small quantities as to be non-quantifiable. The exception occurred for
the phthalate ester analysis at station THS-17 on Coal Creek. A single high
value of 58.2 ug/1 was measured. Phthalate esters are organic compounds used
extensively in the plastics industry as plasticizers and in agriculture as
orchard miticides and for insect control.
Biological Results
A biological investigation will determine the kinds and numbers of
benthic organisms existing in select areas of the stream. Aquatic
invertebrates have life spans of a few months to several years and will
reflect short-term as well as long-term changes in water quality or bottom
conditions, thus, they are well suited to evaluating the effects of pollutants
on the water quality of the receiving stream. Many factors, including:
1.
Light
2.
Temperature
3.
Dissolved oxygen
4.
Toxic materials
5.
Type of bottom substrate
6.
Depth of water, and
7.
Velocity of the water
will affect the total numbers of organisms as well as the kinds of organisms
found in the aquatic environment. A significant change in any of these
factors will alter the biotic community.
The type of bottom substrate will have a bearing on organism produc-
tivity. Rock and coarse gravel are suitable bottom habitat for most
organisms. It has been shown that bottom organism productivity will decrease
when substrate particle size is decreased. Fine sand, with small interstital
spaces and a shifting nature, offers little or no habitat for aquatic
organisms.
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Water quality changes may adversely affect aquatic organisms. Some
organisms will be destroyed, while others are able to tolerate severe
environmental changes. A non-polluted or clean-water environment, with
adequate bottom substrate, will support large numbers of kinds of aquatic
organisms and each kind will be represented by a small number of individuals.
Most of the organisms will be of the pollution-sensitive types such as
stonefly, mayfly and some caddisfly larvae. An organically enriched or
intermediate situation would exhibit a reduction in the number of kinds of
aquatic organisms present. Pollution sensitive stonefly and most mayfly
larvae would be eliminated. Caddisfly larvae would increase in numbers as
competition for the available food supply was reduced. An organically
enriched environment would greatly increase the available food supply but
would also decrease the dissolved oxygen concentration. Pollution-sensitive
organisms such a stonefly, mayfly and sane species of caddisfly larvae would
be eliminated from the aquatic environment. Due to decreased predation and
competition for available food resources, the remaining intermediate and
pollution-tolerant organisms such as midges, blackflies and sludgeworms
multiply 1n great numbers. As a result, the total number of organisms will
increase while the numbers of kinds of organsims will decrease.
Toxic materials will reduce both diversity and total numbers of organisms
immediately downstream from the point of discharge. Severely toxic wastes
will eliminate all benthic organisms from a given environment. Moderately
toxic wastes, on the other hand, will eliminate those organisms most
susceptible to the substance. As toxic materials move downstream and are
diluted or otherwise rendered harmless, detrimental effects are reduced and
the aquatic community will increase in both kinds and total numbers given
proper habitat and flow. In addition to serving as a pollution indicator, the
aquatic community serves as a major link in the aquatic food chain; algae to
bottom animals to fish.
Aquatic invertebrates collected at the control station, approximately
0.25 miles (0.4 kilometers) downstream of Chatfield Reservoir (THS-l/RM
334.9), were predominately intermediate and pollution-tolerant organisms, with
a population density of 106 organisms per square foot (1722 per square
meter). Appendix C. Approximately 20% of the total number or organisms were
pollution sensitive mayfly larvae. The bottom substrate at this station
consisted of cobble, shale and sand with some large rocks cemented in with
silt and sand.
Plum Creek at Teel Stable (THS-2/RM 335) enters Chatfield Reservoir
upstream of the control station (THS-1). Since there was an existing toxic
waste site upsteam of Teel Stables, one qualitative sample was collected at
this station. Fine gravel and coarse sand comprised the bottom substrate.
Clean-water associated organisms such as stonefly and caddisfly larvae were
the predominate types handpicked from selected over-hanging foliage and
debris. Any contribution by Plum Creek is masked by Chatfield Reservoir and
does not affect the control station (THS-1) downstream of the reservoir.
13
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Downstream 7.9 miles (12-6 kilometers) from the control station, the
South Platte River at Oxford Avenue (TH5-3/RM 327} supported a diverse popula-
tion of aquatic invertebrates, Appendix C. Bottom organisms numbered 256 per
square foot (2755 per square meter), with a diversity of 9 kinds. Pollution-
sensitive and intermediate organisms comprised 36 and 32% respectively of the
total population. Pollution-tolerant species comprised 30% of the bottom
organisms collected. This station is indicative of an enriched, but
unpolluted, condition.
Downstream of the Littleton/Englewood Bi-City wastewater treatment plant
discharge, approximately one mile (1.6 kilometers), the benthic community
increased from 256 per square foot (2755 per square meter) at the South Platte
River station near Oxford Avenue (THS-3) to 2598 per square foot (27,954 per
square meter) in the river near Evans Avenue (THS-6/RM 324.7), Figure 6. The
invertebrate population Increased from 30% pollution-tolerant organisms at
Oxford Avenue to 88% at Evans Avenue, indicating organic degradation.
Pollution-tolerant organisms consisted of sludgeworms, leeches, midge larvae
and blackfly larvae. The fecal coliform densities support the biological
observations. At THS-3 the fecal coliform density was 88/100 ml, as compared
to 11,400/100 ml at THS-6, a 130 fold increase, Figure 3. The aquatic insect
population at this station was indicative of organic pollution. The
Littleton/Englewood wastewater treatment plant discharges to this segment of
the stream.
Lakewood Gulch (THS-5/RM 319.4), a tributary stream entering the South
Platte River approximately 5 miles (8 kilometers) downstream from Evans
Avenue, exhibited a diverse population of bottom organisms. The benthic
community averaged 247 organisms per square foot (2658 per square meter), with
11 kinds present. Appendix C. Pollution-sensitive mayfly and intermediate
caddlsfly larvae comprised 36% of the organisms collected. Pollution-tolerant
midges, sludgeworms and craneflies totalled 64% of the aquatic invertebrates
collected. The bottom substrate consisted of rock, gravel and sand cemented
by silt and clay. Periphyton were attached to the existing substrate in 4-10
inch (10.16-25.4 cm) long strings, indicating possible enrichment of the
sampling site.
Coarse sand comprised the bottom substrate at the Cherry Creek sampling
station (THS-7/RM 317.7). One qualitative sample was collected from selected
rocks and debris. Pollution-tolerant organisms were the dominant types found
at this station, Appendix C. Bottom organisms collected at this station were
indicative of an enriched stream.
Downstream of the confluence of Cherry Creek and the South Platte River,
benthic samples were collected from the river near 19th and Grlnnell (THS-8/RM
317.3). The benthic population numbered 527 per square foot (5671 per square
meter) with 9 different kinds. Pollution-tolerant organisms, sludgeworms,
midges and blackflies, comprised 90% of the organisms collected. Fecal
coliform data showed almost a three fold increase over the upstream station at
Evans Avenue, 11,400/100 ml as compared to 30,000/100 ml, Figure 3. Water
quality degradation was still evident in this reach of the South Platte
River. The benthic population identified was indicative of an organically
polluted habitat.
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Clear Creek (THS-9/RM 311.1), upstream of its confluence with the South
Platte River approximate 1/2 mile (0.8 km), supported a diverse population
numbering 237 per square foot (2550 per square meter), with 11 kinds present,
Appendix C. Pollution-sensitive mayfly and intermediated caddisfly larvae
made up 43S of the organisms observed.
Downstream from the Denver Metropolitan wastewater treatment plant
approximately 1.25 miles (2 km), poor substreate composition precluded any
in-depth sampling at this South Platte River station (THS-10/RM 310.9). One
qualitative sample was collected. Pollution-tolerant organisms indicative of
a polluted situation comprised the majority of the organisms collected.
Approximately 10 miles (16 kilometers) downstream from the Denver
Metropolitan wastewater treatment plant, the South Platte River near Henderson
(THS-13/RM 301.5) supported a highly abundant benthic population. Aquatic
organisms numbered 3878 per square foot (41,727 per square meter), Figure 6.
Pollution-tolerant sludgeworms, midges, blackflies and snails, typical of the
influence of organic pollution were found. Periphyton streamers were also
observed attached to the substrate.
Big Dry Creek at Colorado Highway 121 (THS-16/RM 289/26.2) supported a
diverse population of aquatic invertebrates; 12 kinds were present, Figure 7.
One qualitative sample was collected. Pollution sensitive organisms as well
as pollution-tolerant organisms indicative of an enriched but non-polluted
situatiion were observed. Substrate composition consisted of rock to shifting
sand.
Downstream for THS-16 22 miles (35.2 kilometers) the substrate
composition at Big Dry Creek at County Road 23 (THS-15/RM 289/4.2) was not
conducive for sampling. Since mud and silt made up the substrate, only one
qualitative sample was collected. Benthic organisms tolerant to organic
pollution comprised the entire sample, reflecting a degraded water quality.
Coal Creek at Highway 72 (THS-19/RM 270/17/4/7.9/29.9), supported a
population of bottom organisms numbering 1910 per square foot (20,551 per
square meter) with a diversity of 27 species, Appendix C. The organisms
collected were predominantly pollution-sensitive stoneflies, mayflies, and
intermediate caddlsflies. The substrate consisted of cobble to small rocks
over sand and bedrock. Intermediate caddisflies totalled 66% of the
population, indicating some form of enrichment.
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Downstream of THS-19, Coal Creek at Superior (THS-17/RM 270/17.4/7.
9/21.3) supported bottom organisms numbering 2679 per square foot (28,826 per
square meter) and 21 kinds. Pollution-sensitive mayfly and intermediate
caddisfly larvae comprised 28% and 44% respectively of the population.
Stoneflies were not found at this station, Appendix C. Pollution-tolerant
organisms increased from 3% at station THS-19 to 13% at THS-17. This could be
due, in part, to a change in substrate composition; cobble and sand, as
compared to cobble and rock. Also, biogeographical locations could affect
species diversity. THS-19 is a montane region with clear water flowing over a
shaded cobble and sand bottom; while THS-17 is a prairie setting, with slower
water flow over a cobble and silt bottom. The stream at THS-17 is exposed to
more sunlight and influenced by agricultural activity which can produce an
enriched water quality, Figure 8.
South Boulder Creek at Eldorado Springs (THS-20/RM 270/17/4/21.0/8.6),
supported a diverse and abundant benthic population. Twenty-seven kinds of
bottom organisms numbering 555 per square foot (5972 per square meter) were
collected. Clean water associated stoneflies and mayflies comprised 27% of
the population. Intermediately pollution sensitive caddisfly larvae made up
64% of the benthic organisms. Pollution-tolerant midges and blackflies
totalled 8% of the total population of aquatic invertebrates. This type of
benthic population was indicative of an unpolluted stream.
St. Vrain Creek at Wildcat (THS-21/RM 270/1.3) was a slow moving stream
with a substrate composed of shifting sand. This type of substrate offers
little or no habitat for bottom organisms. One qualitative sample with a very
small number of organisms was collected. Pollution-tolerant organisms
comprised the total sample. Due to the small number of organisms collected,
an Inferance to water quality was not made.
Boulder Creek at Highway 287 (THS-23/RM 270/17.4/10.1 ) supported a
diverse population of aquatic invertebrates. Bottom organisms numbered 848
per square foot (9124 per square meter) with a diversity of 11 kinds,
Appendix C, Figure 9. Pollution-sensitive mayfly larvae comprised 18% of the
total number of organisms. Pollution-tolerant organisms such as midges,
sludgeworms and blackflies made up 65% of the population, Indicating a
degraded water quality.
Downstream of THS-23 6.5 miles (10.4 kilometers), Boulder Creek at County
Road 20 1/2 (THS-22/RM 270/17/4/1/6), water quality degradation was still
evident. Bottom organisms numbered 916 per square foot (9856 per square
meter). This station supported a reduced diversity of 8 kinds, as compared to
11 kinds at station THS-23. Pollution-tolerant organisms totalled 99% of the
organisms collected.
East of Loveland, Colorado, the Big Thompson River (THS-27/RM 260.4/21.0)
supported aquatic life indicative of an unpolluted system, Appendix C.
Benthic organisms numbered 441 per square foot (4745 per square meter) with 8
kinds present, Figure 10. Pollution-sensitive mayfly and caddisfly larvae
totalled 76% of the bottom organisms collected. Pollution-tolerant
sludgeworms, midges and blackflies comprised only 24% of the aquatic
invertebrates.
16
-------
Number Of Organisms Per Square Foot
vji
8
ro
ro
U1
U)
Colo. Hwy V70
So. Platte River at Oxford
Lakewood Gulch
So. Platte R. at 19th
3 Clear Cr,
So. Platte R. at Evans
See Figure 9
-1 Big Thompson
e
Cache La Poudre at Ft. Collins
So. Platte R. at Henderson
C/3
O
P>
ft-
c*
(V
ป
01
ct-
fป
f+
8
01
H
n
V
C
ct
5
CO
CT
(8
Ct
3 Cache La Poudre at Windsor
17
-------
Numbers Of Kinds Per Square Foot
PO
u>
_1_
-X_
ON
_L_
J
_L_
CD
_L_
vO
_1_
O
_L_
t-1
_L_
ro
_1_
uป
_1_
XT
I
vn
-J
Colo. Hwy U70
3 Plum Cr.
So. Platte R. at Oxford
I Bear Cr.
Platte at Evans
Lakewood Gulch
] SEerry Cr.
So. Platte R. at 19th
Clear Cr.
So. Platte R. at Hwy 22k
So. Platte R. at Henderson
Big Dry Cr. at Colo. Hwy 121
]
1 Big Dry Cr. at CO RD 23
See Figure 8
See Figure 10
Cache La Poudre at Ft. Collins
J
3 Cache La Poudre at Windsor
13 Cache La Poudre at Hwy 263
CO
o
SB
c*
ri-
al
ป
C/3
ct
(B
e+
H-
O
3
la
EZ3
1-3
c
c
rt
&
>1
ซ<
CO
rt-
8>
ft
Hป
O
S
M
to
.O
c
fa
~V
o
o
CT
18
-------
West of Mi liken, Colorado, the Little Thompson River (THS-30/RM 260.4/7.
0/0.1) was turbid. Substrate composition limited sampling to only one
qualitative sample. Bottom organisms numbered 7 kinds, with only one or two
organisms collected for each kind. Mayfly and caddisfly larvae were observed,
indicating an unpolluted stream.
The Cache La Poudre River at Fort Collins, Colorado (THS-29/RM 249/43.6)
supported a diverse benthic population. Bottom organisms numbered 177 per
square foot (1905 per square meter) with a diversity of 11 kinds. Pollution-
sensitive mayfly larvae comprised only 6% of the benthic population, while
caddisfly larvae totalled 58% of the organisms collected. Some form of
enrichment was evident, but not enough to adversely affect the water quality,
as reflected by the aquatic community.
Downstream of THS-29, the Cache La Poundre near Windsor, Colorado (THS-26
/RM 249/18.5) supported an abundant population with a reduced diversity,
indicative of an enriched stream. Bottom organisms totalled 1511 per square
foot (16,258 per square meter) with a diversity of 6 kinds. Pollution-sensi-
tive mayfly larvae made up only 4% of the total population while caddifly
larvae comprised 61% of the aquatic invertebrates identified. Pollution-
tolerant midges and blackflies increased to 33% of the bottom organisms.
One qualitative sample was collected on the Cache La Poudre east of
Greeley (THS-25/RM 249/2.9) with only 3 kinds of organisms present. Pollu-
tion-tolerant midges and blackflies, indicative of a polluted situation,
comprised the entire sample. High flows in this reach of the river precluded
any further sampling.
19
-------
30
28
26
2k
22
20
18
16
1U
12
10
8
6
k
2
Figure 8. Numbers Of Kinds Per Square Foot
o
CM
T"
10
T
9 8
So. Boulder Cr. - Miles
T I
29 25 20
Coal Creek - Miles
22
1
15
Boulder Creek - Miles
I
8
T"
10
T"
6
i
lU
St. Vrain Creek - Miles
-------
3000
Figure 9
Number Of Organisms Per Square Foot
2500 -
"8
S
V
u
aJ
3
a*
CO
u
v
Pซ
to
H
s
CO
u
o
O
(h
V
jq
2000 -
1500
1000 -
u
o
0)
d
H
3
O
PQ
O
CO
t-
00
CM
(h
O
u
ฆS
o
PQ
CM
-P,
B)|
ซ
0|
<0
o
o
(4
o
ฆH
h
V
&
03
ฆP
0
o
g
o
S*
cv
s
o
o
pq
CVJ
500 -
r~
22
r
10
x
T
T
X
lU 10 6
Boulder Creek - Miles
-------
Figure 10. Numbers Of Kinds Per Square Foot
10 -
9 -
8 .
7 -
6 -
5 -
k -
3 '
2 -
1 -
i3 ฆ ' ' ' 15' ' r
Big Thompson River - Miles
-------
REFERENCES
1. REPORT ON WATER QUALITY INVESTIGATIONS IN THE SOUTH PLATTE RIVER BASIN,
COLORADO. Environmental Protection Agency, National Field Investigations
Center - Denver and Region VIII. June 1972.
2. DEVELOPMENT OF A WATER QUALITY MODEL FOR THE SOUTH PLATTE RIVER BASIN
SYSTEM LAYOUT AND DATA REPORT 211BOll79 TO ENVIRONMENTAL PROTECTION
AGENCY. Battelle Memorial Institute, Pacific Northwest Laboratories,
Richland, Washington, September 1972.
3. DEVELOPMENT OF A WATER QUALITY MODEL FOR THE SOUTH PLATTE RIVER BASIN -
DOCUMENTATION REPORT. Battelle Memorial Institute, Pacific Northwest
Laboratories, Richland, Washington. December 1972.
4 CLASSIFICATIONS AND NUMERIC STANDARDS - SOUTH PLATTE RIVER BASIN, LARAMIE
RIVER BASIN, REPUBLICAN RIVER BASIN, SMOKY HILL RIVER BASIN. Colorado
Department of Health, Water Quality Control Commission. 1981. (Amended
1984).
5 A SOP FOR FIELD SAMPLERS. Environmental Protection Agency, Region VIII,
Denver, Colorado. September 1960.
6 METHODS FOR CHEMICAL ANALYSIS OF WATER AND WASTES. Environmental
Protection Agency, EPA-600/4-79-020. March 1979.
7 BIOLOGICAL FIELD AND LABORATORY METHODS FOR MEASURING THE QUALITY OF
SURFACE WATERS AND EFFLUENTS, Environmental Protection Agency, EPA-670/4/
73-001. July 1973.
8 AMBIENT WATER QUALITY CRITERIA FOR PHTHALATE ESTERS. Environmental
Protection Agency, Office of Water Regulations and Standards, Washington,
D.C., EPA 440/5-80-067. 1980.
9 BIOLOGY OF WATER POLLUTION, U.S. Department of the Interior, Federal
Water Pollution Control Administration. 1976.
23
-------
APPENDIX A
24
-------
i o
1
4
6
5
7
8
1 1
12
9
10
13
15
1 6
21
TOXIC HOT SPOT
SOUTH PLATTE RIVER ALONG
STUDY
THE FRONT RANGE
Descn pti on
Plum Cr. at Teel Stables near
Chat-field Reservoir
So. Platte R. at Colo. 470
br .i dge
So. Platte R. at Ox-ford Ave.
Bear Cr. near mouth near
Hampden 2< Bryant
So. Platte R. near Evans Ave.
Lakewood Gulch near Decatur ?<
Howard
Cherry Cr. near University
Blvd.
So. Platte R. at gaging sta.
near 19th ?< Grinnell
Sand Cr. at Burlington Ditch
overf1ow
Sand Cr. at Col-fa;:, 1/2 mile
W. of Tower Rd.
Clear Cr. at York
So. Platte R. at Hwy 224
So. Platte R. at gaging sta.
near Henderson
Big Dry Cr. at County Rd.23
NW of Wattenberg
Big Dry Cr. at Colo. 121
br i dge
St. Vrain Cr. at gaging sta.
near Wildcat
Boulder Cr. at County Rd.
20 1/2
River Miles
335/4.3
334. 9
327. 0
326.4/0.4
324. 7
319.4/0.1
317.7/4.2
317.3
312.1/0.8
312.1/12
311.1/0.3
310. 9
301. 5
289.0/4.2
289.0/26.2
270.0/1.3
270.0/17.4/1.6
25
-------
17
19
20
27
30
ฆ25
26
29
24
14
31
28
ฆ28
Boulder Cr. at Hwy 287 W. of 270.0/17.4/10.1
Er i e
Coal Cr. at Coal Cr. Rd. SW 270.0/17.4/7.9/21.3
of Superior
Coal Cr. at Hwy 72 bridge near 270.0/17.4/7.9/29.9
gaging station
So. Boulder Cr. at Eldorado 270.0/17.4/21.0/8.6
Spr i ngs
Big Thompson R. bridge 260.4/21.0
crossing E. o-f Lovel and
between 1st St. 8< Hwy 402
Lt. Thompson R. near Hwy 257 260.4/7.0/0.1
St 60 W. of Mil liken
Cache La Poudre R. off Hwy 263 249.0/2.9
E. of Greeley
Cache La Poudre R. at County 249.0/1S.5
Rd. 25 bridge SE of Windsor
Cache La Poudre R. at Hospital 249.0/43.6
Rd. , E. side of Ft. Collins
So. Platte R. at gaging sta., 246.5
Hwy 37 bridge N. of Kersey
~'Brian Canal near E. 120th Ave.
crossi ng
Burlington Ditch at overflow to
Sand Cr.
Fossil Cr. at So. Ft. Collins WWTP
So. Ft. Collins WWTP outfall
26
-------
APPENDIX B
27
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-1
PARAMETER
WATER
VALUE
UNITS
SEDIMENT
VALUE UNITS
DATE
8/12/82
MO/DAY/YR
TIME
0820
MILITARY
TEMPERATURE
15. 0
C
pH
7.6
su
FLOW
344
c-f s
ARSENIC
< 50
ug/1
10
ug/ g
BERYLLIUM
< 10
ug/1
0.4
ug/g
CADMIUM
<5
ug /1
2.5
ug/g
CHROMIUM
<5
ug/1
11
ug/g
COPPER
<5
ug/1
3.4
ug/g
CYANIDE
r>
ug /1
-
ug/g
IRON
151
ug/1
13,000
ug/g
LEAD
<30
ug/1
< 0.6
ug/g
MANGANESE
15
ug /1
185
ug/g
MERCURY
<0. 1
ug /1
< 0. 05
ug/g
NICKEL
<30
ug/1
3.2
ug/g
SELENIUM
< 50
ug/1
< 1)
ug/g
SILVER
<5
ug/1
< 0. 1
ug/g
ZINC
11
ug/1
36
ug/g
PCB
<^5
ug/1
ug/g
PHENOL
<50
ug /1
-
ug/g
2,4,6 TRICHLOROF'HENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug /1
< 0. 5
ug/g
HARDNESS AS CaC03
AMMONIA
GROSS ALPHA
GROSS BETA
TOTAL COLIFORM
FECAL COLIFORM
1 IS
0. 04
2
48
28
mg/
mg/
pci /
pci v
NO/100 ml
NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not be
determi ned.
LA = Laboratory accident,sample lost.
28
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-2
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/12/82
MO/DAY/YR
TIME
0850
MILITARY
TEMPERATURE
20. 0
C
PH
7.9
SU
FLOW
EST 15
Cf 5
ARSENIC
<50
ug/1
1. 0
ug/g
BERYLLIUM
< 10
Lig/1
< 0. 2
ug/g
CADMIUM
< 5
ug/1
<0. 1
ug/g
CHROMIUM
< 5
ug/1
0.2
ug/g
COPPER
< 5
ug/1
0. 3
ug/g
CYANIDE
<2
ug/1
ug/g
IRON
42
ug/1
1000
ug/g
LEAD
<30
ug /1
< 0. 6
ug/g
MANGANESE
6
ug/1
54
ug/g
MERCURY
<0. 1
ug/1
< 0. 05
ug/g
NICKEL
< 30
ug/1
< 0. 6
ug/g
SELENIUM
<50
ug/1
( 1)
ug/g
SILVER
< 5
ug/1
<0. 1
ug/g
ZINC
< 5
ug/1
CD
(N
ug/g
PCB
<5
ug/1
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
< 0. 5
ug/g
HARDNESS AS CaC03
136
mg/1
AMMONIA
< 0. 02
mg/1
GROSS ALPHA
1
pci /I
GROSS BETA
4
pci /I
TOTAL COL IFORM
800
NO/100 ml
FECAL COLIFORM
220
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,sample lost.
29
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-3
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNITS
DATE
B/12/82
MO/DAY/YR
TIME
0935
MILITARY
TEMPERATURE
18.0
C
pH
7. S
SU
FLOW
273
cf s
ARSENIC
<50
ug /1
14
ug/g
BERYLLIUM
< 10
ug/1
0. 7
Lig/g
CADMIUM
<5
ug/1
2. 7
ug/g
CHROMIUM
< 5
Ltg/1
9.0
ug/g
COPPER
<5
ug/1
14
ug/g
CYANIDE
r>
J-
ug/1
ug/g
IRON
419
ug/1
12,000
ug/g
LEAD
<30
ug/1
13
ug / g
MANGANESE
44
ug/1
246
ug/g
MERCURY
<0. 1
ug/1
<0. 05
ug/g
NICKEL
< 30
ug/1
5
ug/g
SELENIUM
< 50
ug /1
(1)
ug/g
SILVER
<5
ug/1
<0. 1
uq/g
ZINC
6
ug /1
53
ug/g
PCS
<5
ug/1
< 5
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug /1
< 0. 5
ug/g
F'HTHALATE ESTERS
<5
ug/1
< 0. 5
ug/g
HARDNESS AS CaC03
123
mg/1
AMMONIA
0.07
mg/1
GROSS ALPHA
y.
pci /I
GROSS BETA
6
pci /I
TOTAL COLIFORM
FECAL COLIFORM
200
88
!> ml
NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,sample lost.
30
-------
TOXIC HOT SPOT
STUDY
STATION NUMBER - THS-4
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/12/82
MO/DAY/YR
TIME
1OOO
MILITARY
TEMPERATURE
18.0
C
pH
7.8
SU
FLOW
17
cf s
ARSENIC
<50
ug /1
14
ug/g
BERYLLIUM
< 10
ug /1
0.4
ug/g
CADMIUM
< 5
ug/1
2.3
ug/g
CHROMIUM
<5
ug /1
10
ug/g
COPPER
< 5
ug/'l
7.3
ug/g
CYANIDE
<2
ug /1
-
ug/g
IRON
843
ug/1
14,000
ug/g
LEAD
<30
ug/1
44
ug/g
MANGANESE
53
ug/1
179
ug/g
MERCURY
<0. 1
ug/1
< 0. 05
ug/g
NICKEL
< 30
ug/1
O ~~7
4m m /
ug/g
SELENIUM
< 50
ug/1
( 1 )
ug/g
SILVER
<5
ug /1
<0. 1
ug/g
ZINC
21
ug/1
45
ug/g
F'CB
<5
ug/1
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0.5
ug/g
HARDNESS AS CaC03
193
mg/1
AMMONIA
0. 04
mg/1
GROSS ALPHA
5
pci /I
GROSS BETA
7
pci /1
TOTAL COLIFORM
980
NO/100 ml
FECAL COLIFORM
450
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
31
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNITS
DATE
8/12/92
MO/DAY/YR
TIME
1230
MILITARY
TEMPERATURE
22. 0
C
pH
a. 0
SU
FLOW
-
cf s
ARSENIC
< 50
ug /1
36
ug/g
BERYLLIUM
< 10
ug/1
0. 6
ug/g
CADMIUM
< 5
ug /1
6. 8
ug/g
CHROMIUM
<5
ug/1
18
ug/g
COPPER
20
ug/1
17
ug/g
CYANIDE
<'
ug/1
-
ug/g
IRON
5770
ug /1
30,000
ug/g
LEAD
61
ug/1
16
ug/g
MANGANESE
'UTr*
ug/1
517
ug/g
MERCURY
< 0. 1
ug/1
< 0.05
ug/g
NICKEL
< 30
ug/1
6.9
ug/g
SELENIUM
< 50
ug/1
( 1 )
ug/g
SILVER
< 5
ug /1
<0. 1
ug/g
ZINC
90
ug/1
99
ug/g
F'CB
<5
ug/1
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROF'HENOL
< 5
ug/1
K O. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
< 0. 5
ug/g
HARDNESS AS CaC03
173
mg/1
AMMONIA
0.11
mg/1
GROSS ALPHA
10
pci /I
GROSS BETA
10
pci /I
TOTAL COLIFORM
FECAL COLIFORM
3800
1400
NO/100 ml
NO/100 ml
(1) Because oi high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
32
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - TH5-6
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/12/82
MO/DAY/YR
TIME
1040
MILITARY
TEMPERATURE
19.0
C
pH
7. 9
SU
FLOW
-
cf s
ARSENIC
<50
ug/1
60
ug/g
BERYLLIUM
<10
ug /1
1 . 9
ug / g
CADMIUM
< 5
ug /1
68
ug/g
CHROMIUM
<5
ug /1
128
ug/g
COPPER
< 5
Lig/1
231
ug/g
CYANIDE
ug/1
-
ug/g
IRON
1200
ug/1
32,000
ug/g
LEAD
<30
ug/1
60
ug/g
MANGANESE
90
ug/1
665
ug/g
MERCURY
<0. 1
ug/1
0. 52
ug/g
NICKEL
< 30
ug/1
36
ug/g
SELENIUM
<50
ug/1
(1)
ug/g
SILVER
< 5
ug/1
5.6
ug/g
ZINC
22
ug/1
438
ug/g
PCB
< 5
ug/1
<5
ug/g
PHENOL
<50
ug/1
-
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
< 5
ug/1
2.3
ug/g
HARDNESS AS CaC03
154
mg/1
AMMONIA
1.90
mg/1
SROSS ALPHA
4
pci /I
GROSS BETA
10
pci /I
TOTAL COLIFORM
126,000
NO/100 ml
FECAL COLIFORM
11,400
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
33
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-7
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/12/82
MO/DAY/YR
TIME
1110
MILITARY
TEMPERATURE
22.0
C
pH
7.6
SU
FLOW
11
cfs
ARSENIC
<50
ug/1
ug/g
BERYLLIUM
< 10
Lig/1
< 0. 2
ug/g
CADMIUM
<5
ug/1
0.4
ug/g
CHROMIUM
<5
ug /1
1.5
ug/g
COPPER
9
ug/1
ug/g
CYANIDE
o
\ X-
ug/1
-
ug/g
IRON
3300
ug/1
2, 000
ug/g
LEAD
< 30
ug/1
18
ug/g
MANGANESE
131
ug/1
159
ug/g
MERCURY
<0. 1
ug /1
< 0. 05
ug/g
NICKEL
<30
ug/1
1.0
ug/g
SELENIUM
< 50
ug/1
(1)
ug/g
SILVER
<5
ug /1
< 0. 1
ug/g
ZINC
30
ug /1
17
ug/g
PCB
<5
ug./1
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0.5
ug/g
PHTHALATE ESTERS
<5
ug /1
< 0. 5
ug/g
HARDNESS AS CaC03
314
mg/1
AMMONIA
<0. 02
mg /1
GROSS ALPHA
13
pci /I
GROSS BETA
17
pci /I
TOTAL COLIFORM
FECAL COLIFORM
6400
1980
;> ml
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,sample lost.
34
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-B
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/12/82
MO/DAY/YR
TIME
1250
MILITARY
TEMPERATURE
22. 0
C
pH
8. 1
SU
FLOW
430
cf s
ARSENIC
< 50
ug/1
17
ug/g
BERYLLIUM
< 10
ug/1
0. 5
ug/g
CADMIUM
<5
ug/1
3.9
ug/g
CHROMIUM
< 5
ug /1
14
ug/g
COPPER
7
ug/1
18
ug/g
CYANIDE
<2
ug /1
-
ug/g
IRON
1350
ug/1
17,000
ug/g
LEAD
< 30
ug /1
62
ug/g
MANGANESE
90
ug/1
264
ug/g
MERCURY
<0. 1
ug/1
LA
ug/g
NICKEL
< 30
ug /1
4.7
ug/g
SELENIUM
<50
ug/1
< 1)
ug / g
SILVER
<5
ug/1
< 0. 1
ug/g
ZINC
24
ug/1
109
ug/g
PCB
<5
ug/1
ug/g
PHENOL
< 50
ug /1
ug/g
2,4,6 TRICHLOROPHENOL
< 5
ug/1
ug/g
PHTHALATE ESTERS
< 5
ug/1
ug/g
HARDNESS AS CaC03
167
mg/1
AMMONIA
0.62
mg /1
6R0SS ALPHA
5
pci /I
GROSS BETA
7
p c i /1
TOTAL COLIFORM
126,000
NO/100 ml
FECAL COLIFORM
30,000
NO/100 ml
(1) Because of high iron concentrations. SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
35
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-9
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/ 10/32
MO/DAY/YR
TIME
1 1 15
MILITARY
TEMPERATURE
25. 0
C
pH
7.7
SU
FLOW
18
Cf ฃ
ARSENIC
< 50
ug/1
20
ug/g
BERYLLIUM
< 10
ug /1
0. 5
ug/g
CADMIUM
5
ug/1
4.8
ug/g
CHROMIUM
< 5
ug /1
20
ug/g
COPPER
8
ug/1
34
ug/g
CYANIDE
ug/1
ug/g
IRON
219
ug/1
17,000
ug/g
LEAD
< 30
ug /1
25
ug/g
MANGANESE
98
ug /1
446
ug/g
MERCURY
<0.1
ug/1
<0. 05
ug/g
NICKEL
< 30
ug/1
8. 4
ug/g
SELENIUM
< 50
ug /1
(1 )
ug/g
SILVER
K 5
ug/' 1
0. 2
ug/g
ZINC
38
ug/1
287
ug/ g
PCB
<5
ug/1
-
ug/g
PHENOL
< 50
ug /1
ug/g
2,4,6 TRICHLOROPHENOL
i 5
ug/1
< 0. 5
ug/g
F'HTHALATE ESTERS
< 5
ug/1
< 0.5
ug/g
HARDNESS AS CaC03
159
mg/1
AMMONIA
0.29
mg/1
GROSS ALPHA
6
pci /I
GROSS BETA
11
pci /I
TOTAL COLIFORM
2800
NO/100 ml
FECAL COL IFORM
1000
NO/100 ml
(1) Because a-f high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
36
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-10
PARAMETER
WATER-
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/10/82
MO/DAY/YR
TIME
1135
MILITARY
TEMPERATURE
25. 4
C
pH
7. 2
SU
FLOW
cf s
ARSENIC
< 50
uq/1
12
ug /g
BERYLLIUM
< 10
ug/1
0. 3
ug/g
CADMIUM
< 5
ug/1
2. 9
ug /g
CHROMIUM
<. 5
ug/1
11
ug/g
COPPER
8
ug/1
ug/g
CYANIDE
8. 8
ug/1
-
ug/g
IRON
674
ug/1
12,000
ug/g
LEAD
<30
ug/1
17
ug/g
MANGANESE
60
ug/1
283
ug/g
MERCURY
<0. 1
ug/1
< 0.05
ug/g
NICKEL
< 30
ug/1
5. 9
ug/g
SELENIUM
<50
ug /1
(1)
ug/g
SILVER
< 5
ug/1
0.2
ug/g
ZINC
30
ug/1
179
ug/g
PCB
<5
ug/1
-
ug/g
PHENOL
< 50
ug/1
-
ug/g
2,4,6 TRICHLOROF'HENOL
< 5
ug/1
< 0.5
ug/g
PHTHALATE ESTERS
<5
ug/1
< 0. 5
ug/g
HARDNESS AS CaC03
194
mg/1
AMMONIA
4.5
mg/1
GROSS ALPHA
5
pci /I
GROSS BETA
11
pci /I
TOTAL COLIFORM
4700
NO/100 ml
FECAL COLIFORM 220 NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
37
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-11
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/10/82
MO/DAY/YR
TIME
1255
MILITARY
TEMPERATURE
25. 0
C
PH
7.4
SU
FLOW
-
cf s
ARSENIC
< 50
ug/I
8
ug/ g
BERYLLIUM
< 10
ug /1
0.2
ug/g
CADMIUM
< 5
ug/1
1 . 4
ug/g
CHROMIUM
<5
ug /1
4.0
ug/g
COPPER
< 5
ug/1
4.9
ug/g
CYANIDE
< 2
ug/1
-
ug/g
IRON
11 60
ug/1
7000
ug/g
LEAD
< 30
ug/1
<0. o
ug/g
MANGANESE
163
ug/1
124
ug/g
MERCURY
<0. 1
ug/1
< 0. 05
ug/g
NICKEL
<30
ug/1
*-ป r*
Xm a
ug/g
SELENIUM
<50
ug/1
(1)
ug / g
SILVER
< 5
ug/1
<0. 1
ug/g
ZINC
12
ug /1
20
ug/g
PCB
<5
ug /1
-
ug/g
PHENOL
<50
ug/1
-
ug/g
2,4,6 TRICHLOROPHENOL
< 5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
< 5
ug /1
< 0. 5
ug/g
HARDNESS AS CaC03
341
mq/1
AMMONIA
0. 38
mg/1
GROSS ALPHA
11
pci /1
GROSS BETA
16
pci /I
TOTAL COLIFORM
580
NO/100 ml
FECAL COLIFORM
580
NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
38
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-12
PARAMETER
WATER-
SEDIMENT
VALUE
UNITS
VALUE
UNIT!
DATE
8/10/82
MO/DAY/YR
TIME
1215
MILITARY
TEMPERATURE
25. 0
C
pH
7.7
SU
FLOW
-
cf s
ARSENIC
< 50
ug/1
11
ug/g
BERYLLIUM
< 10
ug/1
0.4
ug/g
CADMIUM
< 5
ug/1
2. 0
ug/g
CHROMIUM
<5
ug/1
6.0
ug/g
COPPER
<5
ug/1
6. 4
ug/g
CYANIDE
<2
ug/1
-
ug/g
IRON
447
ug/1
9000
ug/g
LEAD
< 30
ug/1
1.6
ug/g
MANGANESE
16
ug/1
182
ug/g
MERCURY
<0. 1
ug/1
<0.05
ug/g
NICKEL
< 30
ug/1
*T T
m' w'
ug/g
SELENIUM
<50
ug/1
(1)
ug/g
SILVER
<5
ug/1
<0. 1
ug/g
ZINC
10
ug/1
30
ug/g
PCB
<5
ug/1
<5
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
<0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0. 5
ug/g
HARDNESS AS CaC03
143
mg/1
AMMONIA
0.03
mg/1
GROSS ALPHA
4
pci /I
GROSS BETA
8
pc i /I
TOTAL COLIFORM
FECAL COLIFORM
1 COO
560
NO/100 ml
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
39
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-13
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/09/82
MO/DAY/YR
TIME
0800
MILITARY
TEMPERATURE
Oer "ฆ>
iป J 4L
C
pH
6.0
SU
FLOW
456
cf s
ARSENIC
< 50
ug/1
18
ug/g
BERYLLIUM
< 10
ug/1
0. 6
ug/g
CADMIUM
<5
ug/1
4.4
ug/g
CHROMIUM
<5
ug/1
19
ug/g
COPPER
9
ug/1
ug/g
CYANIDE
5. 3
ug/1
ug/g
IRON
1350
ug/1
17,900
ug/g
LEAD
< 30
ug/1
28
ug/g
MANGANESE
167
ug/1
269
ug/g
MERCURY
<0. 1
ug /1
0.07
ug/g
NICKEL
< 30
ug/1
9.8
ug/g
SELENIUM
< 50
ug /1
(1)
ug/g
SILVER
<5
ug/1
0.2
ug/g
ZINC
39
ug/1
180
ug/g
PCB
<5
ug/1
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
<0. 5
ug/g
PHTHALATE ESTERS
<5
ug /1
<0.5
ug/g
HARDNESS AS CaC03
205
mg/1
AMMONIA
LA
mg/1
BROSS ALPHA
6
pci /I
GROSS BETA
12
pci /I
TOTAL COLIFORM 5700 NO/100 ml
FECAL COLIFORM 1000 NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accidentซsample lost.
40
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-14
PARAMETER
WATER
VALUE
UNITS
SEDIMENT
VALUE UNITS
DATE
8/09/82
MO/DAY/YR
TIME
0730
MILITARY
TEMPERATURE
20.3
C
pH
5. 7
SU
FLOW
-
cf s
ARSENIC
<50
ug/1
9
ug/g
BERYLLIUM
< 10
ug/1
0.3
ug/g
CADMIUM
<5
ug/1
ug/g
CHROMIUM
< 5
ug/1
62
ug/g
COPPER
< 5
ug/1
16
ug/g
CYANIDE
<2
ug/1
-
ug/g
IRON
2320
ug/1
6000
ug/g
LEAD
< 30
ug/1
21
ug/g
MANGANESE
72
ug/1
291
ug/g
MERCURY
<0. 1
ug/1
0. 1
ug/g
NICKEL
<30
ug /1
5.6
ug/g
SELENIUM
< 50
ug /1
(1)
ug/g
SILVER
<5
ug/1
1 . 1
ug/g
ZINC
15
ug/1
1 11
ug/g
PCB
< 5
ug/1
<5
ug/g
PHENOL
<50
ug/1
-
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
0.6
ug/g
HARDNESS AS CaCO;
AMMONIA
GROSS ALPHA
GROSS BETA
TOTAL COLIFORM
FECAL COLIFORM
171
0. 04
6
7
82 0
560
mg/
mg /
pci /
pci /I
NO/100 ml
NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
41
-------
TOXIC HDT SPOT STUDY
STATION NUMBER - THS-15
PARAMETER-
WATER-
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/09/82
MO/DAY/YR
TIME
0840
MILITARY
TEMPERATURE
20. 0
C
pH
7.2
SU
FLOW
-
cf s
ARSENIC
<50
ug/1
7
ug/g
BERYLLIUM
< 10
UQ/1
0. 5
ug/g
CADMIUM
< 5
ug/1
2. a
ug/g
CHROMIUM
< 5
ug/1
14
ug/g
COPPER
23
ug/1
19
ug/g
CYANIDE
5. 3
ug/1
ug/g
IRON
7840
Uฃ3 <}
1 1,000
ug/g
LEAD
<30
ug/1
3.8
ug/g
MANGANESE
309
ug/1
187
ug/g
MERCURY
0. 11
ug/1
0.05
ug/g
NICKEL
< 30
ug/1
8. 8
ug/g
SELENIUM
< 50
ug/1
(1)
ug/g
SILVER
<5
ug /1
<0. 1
ug/g
ZINC
33
ug /1
80
ug/g
F'CB
<5
ug/1
<5
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
< 5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0.5
ug/g
HARDNESS AS CaC03
34 a
mg/1
AMMONIA
1.66
mg/1
GROSS ALPHA
17
pci /I
GROSS BETA
22
pci /I
TOTAL COLIFORM
4600
NO/100 ml
FECAL COLIFORM 3400 NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,samp1e lost.
42
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-16
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/09/82
MO/DAY/YR
TIME
1420
MILITARY
TEMPERATURE
17.7
C
PH
8. 0
SU
FLOW
-
cf s
ARSENIC
< 50
ug/1
15
ug/g
BERYLLIUM
<10
ug/1
0.5
ug/g
CADMIUM
< 5
ug/1
3.8
ug/g
CHROMIUM
< 5
ug/1
8.7
ug/g
COPPER
< 5
ug/1
9. 1
ug/g
CYANIDE
ug/1
-
ug/g
IRON
727
ug/1
15,000
ug/g
LEAD
< 30
ug/1
< 0. 6
ug/g
MANGANESE
375
ug/1
550
ug/g
MERCURY
<0. 1
ug/1
<0. 05
ug/g
NICKEL
< 30
ug/1
9.9
ug/g
SELENIUM
<50
ug/1
(1)
ug/g
SILVER
< 5
ug/1
< 0. 1
ug/g
ZINC
34
ug/1
47
ug/g
PCB
<5
ug/1
<5
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRI CHLOROF'HENOL
<5
ug/1
< 0.5
ug/g
F'HTHALATE ESTERS
< 5
ug/1
< 0. 5
ug/g
HARDNESS AS CaC03
90
mg/1
AMMONIA
<0. 02
mg/1
GROSS ALPHA
"T(
pci /I
GROSS BETA
7
p c i /1
TOTAL COLIFORM
240
NO/100 ml
FECAL COLIFORM
55
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not be
determined.
LA = Laboratory accident,sample lost.
43
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-17
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT!
DATE
8/09/82
MO/DA'Y/YR
TIME
1125
MILITARY
TEMPERATURE
21.6
C
PH
8.0
SU
FLOW
c-fs
ARSENIC
< 50
ug/1
11
ug/g
BERYLLIUM
< 10
ug/1
0. 4
ug/g
CADMIUM
<5
ug/1
1.9
ug/g
CHROMIUM
< 5
ug/1
8.0
ug/g
COPPER
5
ug/1
6. 0
ug/g
CYANIDE
ug/1
-
ug/g
IRON
59
ug/1
9000
ug/g
LEAD
<30
ug/1
<0. 6
ug/g
MANGANESE
<5
ug/'l
109
ug/g
MERCURY
<0. 1
ug/1
< 0. 05
ug/g
NICKEL
< 30
ug/1
5. 4
ug/g
SELENIUM
< 50
ug /1
(1)
ug/g
SILVER
< 5
ug/1
<0. 1
ug/g
ZINC
12
ug/1
28
ug/g
PCB
<5
ug/1
ug/g
PHENOL
< 50
ug/1
-
ug/g
2,4,6 TRICHLOROPHENOL
*5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
58. 2
ug/1
<0. 5
ug/g
HARDNESS AS CaCOo
128
mg/1
AMMONIA
-0
o
o
mg/1
GROSS ALPHA
1
pci /I
GROSS BETA
pci /I
TOTAL COLIFORM
580
NO/100 ml
FECAL COLIFORM
200
NO/100 ml
<1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
44
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-19
PARAMETER WATER SEDIMENT
VALUE UNITS VALUE UNITS
DATE
8/09/82
MO/DAY/YR
TIME
1230
MILITARY
TEMPERATURE
19. 2
C
PH
9. 2
SU
FLOW
1
cf s
ARSENIC
< 50
ug/1
5
ug/g
BERYLLIUM
< 10
ug/1
0.2
ug/g
CADMIUM
< 5
ug/1
1. 3
ug/g
CHROMIUM
<5
ug/1
3.4
ug/ g
COPPER
< 5
ug/1
4. 0
ug/g
CYANIDE
ug / 1
-
ug/g
IRON
100
ug/1
7000
ug/g
LEAD
<30
ug/1
1. 3
ug/g
MANGANESE
<5
ug/1
128
ug/g
MERCURY
<0. 1
ug /1
< 0. 05
ug/g
NICKEL
< 30
ug/1
1.6
ug/g
SELENIUM
<50
ug/1
(1)
ug/g
SILVER
<5
ug/1
<0. 1
ug/g
ZINC
6
ug/1
19
ug/g
PCB
< 5
ug/1
ug/g
PHENOL
< 50
ug/1
-
ug/g
2,4,6 TRICHLOROPHENOL
< 5
ug/1
LA
ug/g
PHTHALATE ESTERS
<5
ug /1
<0. 5
ug/g
HARDNESS AS CaC03
57
mg/1
AMMONIA
< 0. 02
mg/1
GROSS ALPHA
< 1
pci /1
GROSS BETA
2
pci /1
TOTAL COLIFORM
240
NO/100 ml
FECAL COLIFORM
40
NO/100 ml
<1) Because o-f high iron concentrations,, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
45
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-20
PARAMETER WATER SEDIMENT
VALUE
UNITS
VALUE
UNITS
DATE
8/09/02
MO/DAY/YR
TIME
1200
MILITARY
TEMPERATURE
12.3
C
pH
a.8
SU
FLOW
65
cf s
ARSENIC
< 50
ug/1
11
ug/g
BERYLLIUM
<10
ug/1
0.4
ug/g
CADMIUM
<5
ug/1
2.7
ug/g
CHROMIUM
<5
ug /1
16
ug/g
COPPER
<5
ug/1
5.5
ug/g
CYANIDE
n
ug / 1
ug/g
IRON
91
ug /1
13,000
ug/g
LEAD
< 30
ug/1
<0. 6
ug/g
MANGANESE
S
ug/1
276
ug/g
MERCURY
< 0. 1
ug/1
<0.05
ug/g
NICKEL
< 30
ug/1
10
ug/g
SELENIUM
< 50
ug/1
( 1)
ug/g
SILVER
<5
ug/1
<0. 1
ug/g
ZINC
5
ug/1
T n
ug/g
PCB
<5
ug/1
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0.5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0.5
ug/g
HARDNESS AS CaC03
15
mg/1
AMMONIA
< 0. 02
mg/1
6R0SS ALPHA
<1
pci /I
GROSS BETA
pci /I
TOTAL COL IFORM
100
NO/100 ml
FECAL COLIFORM
62
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
46
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-21
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT!
DATE
8/10/82
MO/DAY/YR
TIME
1000
MILITARY
TEMPERATURE
20. 0
C
pH
7. 1
SU
FLOW
239
cf s
ARSENIC
< so
ug/1
5
ug/g
BERYLLIUM
< 10
ug /1
0.2
ug/g
CADMIUM
<5
ug/1
0.7
ug/g
CHROMIUM
<5
ug/1
4.3
ug/g
COPPER
6
ug/1
y.
ug/g
CYANIDE
<2
ug /1
-
ug/g
IRON
3710
ug/1
4000
ug/g
LEAD
< 30
ug/1
<0.6
ug/g
MANGANESE
ioe
ug/1
91
ug/g
MERCURY
<0. 1
ug/1
< 0. 05
ug/g
NICKEL
<30
ug/1
2.6
ug/g
SELENIUM
<50
ug/1
< 1)
ug/g
SILVER
<5
ug/1
<0. 1
ug/g
ZINC
23
ug /1
11
ug/g
PCB
<5
ug/1
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug /1
<0. 5
ug/g
HARDNESS AS CaC03
546
mg/1
AMMONIA
0.28
mg/1
GROSS ALPHA
13
pci /I
GROSS BETA
14
pci /I
TOTAL COLIFORM
21,000
NO/100 ml
FECAL COLIFORM
4300
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
47
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-22
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNITS
DATE
8/09/82
MO/DAY/YR
TIME
1000
MILITARY
TEMPERATURE
22. 6
C
pH
8.2
SU
FLOW
6. 8
cf s
ARSENIC
< 50
ug/1
5
ug/g
BERYLLIUM
< 10
ug/1
0. 2
ug/g
CADMIUM
<5
ug/1
1. 0
ug/g
CHROMIUM
<5
ug/1
5. 4
ug/g
COPPER
5
ug/1
4.2
ug/g
CYANIDE
<2
ug /1
ug/g
IRON
322
ug/1
6000
ug/g
LEAD
< 30
ug/1
<0. 6
ug/g
MANGANESE
29
ug /1
101
ug/g
MERCURY
<0. 1
ug/1
< 0.05
ug/g
NICKEL
<30
ug/1
3.5
ug/g
SELENIUM
<50
ug/1
( 1 )
ug/g
SILVER
<5
ug/1
<0. 1
ug/g
ZINC
26
ug/1
16
ug/g
PCB
<5
ug /1
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0.5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0.5
ug/g
HARDNESS AS CaC03
294
mg/1
AMMONIA
0.06
mg/1
GROSS ALPHA
8
pci /I
GROSS BETA
10
pci /I
TOTAL COLIFORM
4900
NO/100 ml
FECAL COLIFORM
410
NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
48
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-23
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT!
DATE
8/09/82
MO/DAY/YR
TIME
1 Oc>5
MILITARY
TEMPERATURE
no l.
C
pH
7. 7
SU
FLOW
cfs
ARSENIC
<50
ug/1
8
ug/g
BERYLLIUM
< 10
ug/1
0. 3
ug/g
CADMIUM
< 5
ug /1
1.6
ug/g
CHROMIUM
<5
ug /1
lO
ug/g
COPPER
<5
ug/1
11
ug/g
CYANIDE
2.5
ug/1
ug/g
IRON
400
ug/1
7000
ug/g
LEAD
< 30
ug/1
1.4
ug/g
MANGANESE
31
ug/1
9.4
ug/g
MERCURY
<0. 1
ug/1
0.06
ug/g
NICKEL
<30
ug/1
6.4
ug/g
SELENIUM
< 50
ug/1
(1)
ug/g
SILVER
<5
ug/1
0.2
ug/g
ZINC
150
ug/1
30
ug/g
PCB
<5
ug/1
-
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0.5
ug/g
PHTHALATE ESTERS
<5
ug/1
< 0. 5
ug/g
HARDNESS AS CaC03
147
mg/1
AMMONIA
0.46
mg/1
GROSS ALPHA
*7
pci /I
GROSS BETA
5
pci /I
TOTAL COLIFORM
760
NO/100 ml
FECAL CDLIFORM
340
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,samp 1e lost.
49
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-24
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/09/82
MO/DAY/YR
TIME
1250
MILITARY
TEMPERATURE
25. 0
C
PH
7.2
SU
FLOW
330
cf s
ARSENIC
< 50
ug/1
7
ug/g
BERYLLIUM
< 10
ug/1
0.2
ug/g
CADMIUM
<5
ug/1
1 . 0
ug/g
CHROMIUM
< 5
ug/1
4.6
ug/g
COPPER
<5
ug/1
7. 3
ug/g
CYANIDE
<'
ug/1
"g/g
IRON
101 o
ug /1
5000
ug/g
LEAD
< 30
ug/1
4.7
ug/g
MANGANESE
70
ug/1
171
ug/g
MERCURY
LA
ug/1
<0. 05
ug/g
NICKEL
< 30
ug/1
3. 4
ug/g
SELENIUM
<50
ug /1
( 1)
ug/g
SILVER
<5
ug/1
<0. 1
ug/g
ZINC
15
ug/1
34
ug/g
PCB
<5
ug/1
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
< 5
ug /1
< 0.5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0.5
ug/g
HARDNESS AS CaC03
550
mq/1
AMMONIA
0.08
mg/1
GROSS ALPHA
21
pci /I
GROSS BETA
19
pci /1
TOTAL COL IFORM
480
NO/100 ml
FECAL COLIFORM
250
NO/100 ml
(1) Because of high iron concentrati ons, SELENIUM could riot
determined.
LA = Laboratory accident,sample lost.
50
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-25
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/09/S2
MO/DAY/YR
TIME
1220
MILITARY
TEMPERATURE
22.0
C
PH
7.0
SU
FLOW
23
cfs
ARSENIC
<50
ug/1
13
ug/g
BERYLLIUM
< 10
Ltg/1
0. 4
ug/g
CADMIUM
<5
ug/1
1. 9
ug/g
CHROMIUM
<5
ug/1
12
ug/g
COPPER
~7
/
ug/1
8. 0
ug/g
CYANIDE
2. 6
ug/1
-
ug/g
IRON
2620
ug/1
10,000
ug/g
LEAD
< 30
ug/1
<0.6
ug/g
MANGANESE
225
ug/1
122
ug/g
MERCURY
<0. 1
ug/1
<0.05
ug/g
NICKEL
<30
ug/1
6.8
ug/g
SELENIUM
<50
ug/1
< 1)
ug/g
SILVER
<5
ug/1
< 0. 1
ug/g
ZINC
27
ug/1
60
ug/g
PCB
< 5
ug/1
<5
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
< 0. 5
ug/g
HARDNESS AS CaC03
645
mg/1
AMMONIA
0. 43
mg/1
GROSS ALPHA
20
pci /I
GROSS BETA
25
pci /I
TOTAL COLIFORM
1180
NO/100 ml
FECAL COLIFORM
1120
NO/100 ml
<1) Because o-f high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,sample lost.
51
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-26
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNITS
DATE
8/09/82
MO/DAY/YR
TIME
1100
MILITARY
TEMPERATURE
18.0
C
pH
7. 1
SU
FLOW
-
cf s
ARSENIC
< 50
ug /1
2. 7
ug/g
BERYLLIUM
< 10
Ltg/1
<0.2
ug/g
CADMIUM
x 5
ug/1
0. 7
ug/g
CHROMIUM
<5
ug /1
3.4
ug/g
COPPER
<5
ug /1
2.0
ug/g
CYANIDE
3.0
ug/1
ug/g
IRON
2720
ug/1
4000
ug/g
LEAD
< 30
ug /1
< 0. 6
ug/g
MANGANESE
104
ug/1
68
ug/g
MERCURY
< 0. 1
ug/1
<0. 05
ug / g
NICKEL
< 30
ug/1
2.2
ug/g
SELENIUM
< 50
ug/1
< 1)
ug/g
SILVER
< 5
ug/1
0. 3
ug/g
ZINC
15
ug/1
9.2
ug/g
PCB
< 5
ug/1
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
< 5
ug/1
<0.5
ug/g
F'HTHALATE ESTERS
<5
ug /1
<0.5
ug/g
HARDNESS AS CaC03
572
mg/1
AMMONIA
0. 66
mg/1
GROSS ALPHA
14
pci /I
GROSS BETA
19
p c i /1
TOTAL COLIFORM
FECAL COLIFORM
3300
910
X> ml
IVU/ HI J.
NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
52
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-27
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT!
DATE
B/09/82
MO/DAY/YR
TIME
0805
MILITARY
TEMPERATURE
20. 0
C
PH
7. 1
SU
FLOW
67
cf s
ARSENIC
< 50
ug/1
25
ug/g
BERYLLIUM
<10
ug/1
0. 9
ug/g
CADMIUM
<5
ug/1
4. 5
ug/g
CHROMIUM
5
ug/1
31
ug/g
COPPER
5
ug/1
21
ug/g
CYANIDE
<2
ug /1
ug/g
IRON
1200
ug/1
22,000
ug/g
LEAD
<30
ug/1
<1.5
ug/g
MANGANESE
35
ug/' 1
282
ug/g
MERCURY
<0. 1
ug /1
< 0.05
ug/g
NICKEL
< 30
ug/1
17
ug/g
SELENIUM
< 50
ug/1
(1)
ug/g
SILVER
<5
ug/1
<0. 3
ug/g
ZINC
17
ug/1
69
ug/g
PCB
<5
ug/1
<5
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
is
ug/1
6.9
ug/g
HARDNESS AS CaC03
190
mg/1
AMMONIA
LA
mg/1
GROSS ALPHA
5
pci /I
GROSS BETA
9
pci /I
TOTAL COLIFORM
1640
NO/100 ml
FECAL COLIFORM
300
NO/100 ml
<1) Because of high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,sample lost.
53
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-28
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/09/82
MO/DAY/YR
TIME
0835
MILITARY
TEMPERATURE
20. 0
C
pH
7. 1
SU
FLOW
-
c-fs
ARSENIC
< 50
ug/1
16
ug/ g
BERYLLIUM
< 10
ug/1
< 0. 5
ug/g
CADMIUM
6
ug/1
2. 1
ug/g
CHROMIUM
<5
ug/1
13
ug/g
COPPER
<5
ug/1
7.3
ug/g
CYANIDE
<2
ug/1
-
ug/g
IRON
2620
ug/1
10,000
ug/g
LEAD
<30
ug/1
<1.5
ug/g
MANGANESE
70
ug/1
137
ug/g
MERCURY
< 0. 1
ug/1
<0. 05
ug/g
NICKEL
< 30
ug /1
9.2
ug/g
SELENIUM
<50
ug/1
(1)
ug/g
SILVER
<5
ug/1
< 0. 3
ug/g
ZINC
16
ug/1
34
ug/g
PCB
_< 5
ug/1
<5
ug/g
PHENOL
< 50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0.5
ug/g
HARDNESS AS CaC03
412
mg/1
AMMONIA
0. 15
mg/1
GROSS ALPHA
14
pci /I
GROSS BETA
15
pci /I
TOTAL COLIFORM
FECAL COLIFORM
1200
560
NO/100 ml
NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,sample lost.
54
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-28A
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT)
DATE
8/09/82
MO/DAY/YR
TIME
0905
MILITARY
TEMPERATURE
20. 0
C
PH
6. 9
SU
FLOW
-
cf s
ARSENIC
<50
ug/1
64
ug/g
BERYLLIUM
< 10
ug/1
1.4
ug/g
CADMIUM
<5
ug/1
6. 9
ug/g
CHROMIUM
<5
ug /1
39
ug/g
COPPER
7
ug/1
26
ug/g
CYANIDE
<2
ug/1
-
ug/g
IRON
85
ug/1
29,000
ug/g
LEAD
< 30
ug/1
<1.5
ug/g
MANGANESE
18
ug/1
284
ug/g
MERCURY
<0. 1
ug /1
<0.05
ug/g
NICKEL
41
ug/1
29
ug/g
SELENIUM
<50
ug /1
(1)
ug/g
SILVER
<5
ug/1
< 0. 3
ug/g
ZINC
10
ug/1
107
ug/g
PCB
< 5
ug/1
<5
ug/g
PHENOL
< 50
ug/1
-
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0. 5
ug/g
HARDNESS AS CaC03
703
mg/1
AMMONIA
0. 03
mg/1
GROSS ALPHA
8
pci /I
GROSS BETA
11
pci /I
TOTAL COLIFORM
2400
NO/100 ml
FECAL COLIFORM
210
NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,sample lost.
55
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-29
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNIT
DATE
8/09/82
MO/DAY/YR
TIME
0945
MILITARY
TEMPERATURE
18.0
C
PH
7.0
SU
FLOW
116
cfs
ARSENIC
< 50
Lig/1
16
ug/g
BERYLLIUM
< 10
ug /1
< 0. 5
ug/g
CADMIUM
< 5
ug /1
2. 1
ug/g
CHROMIUM
<5
ug/1
13
ug/g
COPPER
< 5
ug /1
7.8
ug/g
CYANIDE
<ฆ'
ug/1
~
ug/g
IRON
ug/1
10,000
ug/g
LEAD
< 30
ug/1
< 1. 5
ug/g
MANGANESE
16
ug/1
137
ug/g
MERCURY
<0. 1
ug/1
<0. 05
ug/g
NICKEL
< 30
ug /1
9.2
ug/g
SELENIUM
<50
ug/1
(1)
ug/g
SILVER
<5
ug/1
<0. 3
ug/g
ZINC
11
ug/1
34
ug/g
PCB
<5
ug/1
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
ug/1
<0. 5
ug/g
HARDNESS AS CaC03
93
mg/1
AMMONIA
0. 06
mg/1
GROSS ALPHA
12
pci /I
GROSS BETA
29
pci /I
TOTAL COLIFORM 580 NO/100 ml
FECAL COLIFORM 550 NO/100 ml
(1) Because o-f high iron concentrations, SELENIUM could not
determined.
LA = Laboratory accident,samp1e lost.
56
-------
TOXIC HOT SPOT STUDY
STATION NUMBER - THS-30
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE
UNI T
DATE
8/10/82
MO/DAY/YR
TIME
0935
MILITARY
TEMPERATURE
18. 1
C
pH
7. 1
SU
FLOW
-
cf s
ARSENIC
< 50
ug/1
9.0
ug/g
BERYLLIUM
< 10
ug/1
0. 3
ug/g
CADMIUM
<5
ug/1
1.4
ug/g
CHROMIUM
18
ug/1
15
ug/g
COPPER
16
ug/1
4.2
ug/g
CYANIDE
LA
ug/1
-
ug/g
IRON
17,300
ug/1
7000
ug/g
LEAD
< 30
ug/1
< 0. 6
ug/g
MANGANESE
439
ug/1
316
ug/g
MERCURY
<0. 1
ug/1
in
o
o
V
ug/g
NICKEL
<30
ug/1
6. 1
ug/g
SELENIUM
<50
ug/1
(1)
ug/g
SILVER
<5
ug/1
<0. 1
ug/g
ZINC
69
ug/1
21
ug/g
PCB
< 5
ug/1
-
ug/g
PHENOL
< 50
ug/1
-
ug/g
2,4,6 TRICHLOROPHENOL
<5
ug/1
< 0. 5
ug/g
PHTHALATE ESTERS
<5
ug/1
<0. 5
ug/g
HARDNESS AS CaC03
775
mg/1
AMMONIA
0. 31
mg/1
GROSS ALPHA
31
pci /I
GROSS BETA
36
pci /I
TOTAL COLIFORM 3500 NO/100 ml
FECAL COLIFORM 3100 NO/100 ml
(1) Because of high iron concentrations, SELENIUM could not
determi ned.
LA = Laboratory accident,samp1e lost.
57
-------
TOXIC HOT SPOT STUDY
STATION NUMBER -
THS-31
PARAMETER
WATER
SEDIMENT
VALUE
UNITS
VALUE UNIT
DATE
8/10/82
MO/DAY/YR
TIME
1300
MILITARY
TEMPERATURE
23. 0
C
PH
7. 5
SU
FLOW
-
cf s
ARSENIC
< 50
ug /1
ug/g
BERYLLIUM
< 10
ug/1
ug/g
CADMIUM
< 5
ug/1
ug/g
CHROMIUM
< 5
ug/1
ug/g
COPPER
6
ug/1
ug/g
CYANIDE
2. 0
ug/1
ug/g
IRON
672
ug/1
ug/g
LEAD
< 30
ug/1
ug/g
MANGANESE
B6
ug/1
ug/g
MERCURY
<0. 1
ug/1
ug/g
NICKEL
< 30
ug/1
ug/g
SELENIUM
<50
uq/1
ug/g
SILVER
< 5
ug/1
ug/g
ZINC
24
ug/1
ug/g
PCB
5
ug/1
ug/g
PHENOL
<50
ug/1
ug/g
2,4,6 TRICHLOROPHENOL
< 5
ug/1
ug/g
PHTHALATE ESTERS
<5
ug/1
ug/g
HARDNESS AS CaC03
186
mg/1
AMMONIA
1.41
mg/1
GROSS ALPHA
6
pci /I
GROSS BETA
10
pci /I
TOTAL COLIFORM
-
NO/100 ml
FECAL COLIFORM
NO/100 ml
(1) Because o-f high iron
concentrations, SELENIUM could n
determi ned.
LA = Laboratory accident,sample lost.
58
-------
APPENDIX C
59
-------
TOXIC HOT SPOT STUDY
BENTHOS, SOUTH PLATTE RIVER AND SELECTED TRIBUTARIES
STATION NUMBER THS-1 THS-2 THS-3 THS-4 THS-5 THS-6 THS-7 THS-8 THS-? THS-iO THS-13 THS-15
0R6ANISHS
Turbellaria
Dugesia sp.
Neaatoda 4 5
Annelida
Oligochaeta 0 5 0 4 1749 6 301 35 0 2475 8
Hirudinea 6 7 2 5
Isopoda 0 6 5 A
Aaphipoda
Saaaarus 3 1 1
Hvalella azteca B 11 B
Plecoptera
Isogenoides elongatus B
Doddsia occidental is B
Paracapnia angulatus
Pteronarcilla badia
Claassenia sabulosa
Aphineaura sp.
Taenioneaa sp.
Chloroperlidae
Arcynopteryx coapacta
Isoperla bilineata
Epheieroptera
Pseudodoeon sp. 31 B 84 B 11 205 19 5
Tricorythodes sp. B b B 45 86 fi 20 40 B 6
Baetis sp. B 1 B 26 9 6 31 B
Stenoneaa sp. 1
Callibaetis sp. B
Caenis sp.
Epheaerella sp.
Paraleptophlebia sp.
Epheaerella flavilinea
Rhithrogena undulata
Iron longiaanus
Heptagenia sp.
Drunella sp.
Epheaerella teresa
Odonata
Qphiogoaphus sp. B 1 B 1 8
Aaphiagrion sp. BIB 1
Argia sp. 9
Heaiptera 6Q
Notonectidae
Corixidae
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TOXIC HOT SPOT STUDY
BENTHOS, SOUTH PLATTE RIVER AND SELECTED TRIBUTARIES
STATION NUMBER THS-1 THS-2 THS-3 THS-4 THS-5 THS-6 THS-7 THS-9 THS-9 THS-10 THS-13 THS-15
OR6ANISWS
Trichoptera
Hydropsyche sp. 6 41 B 4 3 1 11
Cheuaatopsyche sp. 2 B 40 Q 2 12 14
Ochrotrichia tarsalis S
Agraylea aultipunctata Q
Orthotrichia sp. 9 1
Ochrotrichia sp.
Helicopsyche boreal is
Oecetis sp.
Eobrachycentrus gelidae
61ossosoaa sp.
Arctopsyche grandis
Brachycentrus sp.
Rhyacophila sp.
Oligoplectrua sp.
Oxyethira sp.
Lepidoptera
Paragyractis 1 1
Coleoptera
Elaidae
Optioservus sp. fl fi
Dubiraphia sp. Q
Dyticidae
Hydaticus sp. 0
Copelatus sp.
Hydroporus sp.
Aaphixoa sp.
Diptera
Chironoaidae 18 D 41 Q 145 315 6 160 97 0 567 0
Tipulidae 4 fl
Siauliidae
Siauliua sp. 103 0 15 fl 55 9 12 268 fl
Rhaqiomdae
Atherix variegata
Gastropoda
Physidae
Physa fl 149 9 51? fl
Pelecypoda
Finger-nail claas
TOTAL NUMBER OF KINDS 5 15 9 14 11 14 10 9 11 4 10 7
TOTAL NUNBER/SO FT 160 15 256 14 247 259B 10 527 237 4 3878 7
TOTAL NUttBER/SQ H 1722 161 2755 151 2658 27,954 108 5671 2550 43 41,727 75
0 - Equals organises collected qualitatively, arbitrarily assigned a value oi one for coaputing.
Nuaber/sq a * nueber/sq ft t 10.76 ^
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TOXIC HOT SPOT STUDY
BENTHOS, SOUTH PLATTE RIVER AND SELECTED TRIBUTARIES
STATION NUMBER THS-14 THS-17 THS-19 THS-20 THS-21 THS-22 THS-23 THS-25 THS-24 THS-27 THS-29 THS-30
ORGANISMS
Turbellaria
Dugesia sp.
Neaatoda
14
Annelida
Oligochaeta
Hirudinea
27
243
133
145
120
3
34
94
Isopoda
Aaphipoda
6aaaaru$
Hyalella azteca
Plecoptera
Isogenoides elongatus
Doddsia occidental is
Paracapnia aagulatus
Pterorarctlla badia
Claauenii sabulota
Aphineaura sp.
Taenioncaa sp.
Chioroperlidae
Arcynopteryx coapacta
Isoperla bilineata
Epheaeroptera
Pseudodoeon sp.
Tricorythodes sp.
Baetis sp.
Stenoneaa sp.
Callibaetis sp.
Caenis sp.
Epheaerella sp.
Paraleptophlebia sp.
Epheaerella flavilinea
Rhithrogena undulata
Iron longiaamis
Heptagenia sp.
Orunella sp.
Epheaerella teresa
Odonata
Ophiogoaphus sp.
Aaphiagrion sp.
Argia sp.
1
47
S
s
172
113
467
3
40
1
1
23
4
4
4
33
3
12
1
114
fi
C
4
e
12
25
II
119
54
140 1
5 7
44 1
Heaiptera
Motmectidae
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TDKIC HOT SPOT STUDY
BENTHOS, SOUTH PLATTE RIVER AND SELECTED TRIBUTARIES
STATION NUMBER THS-16 THS-17 THS-19 THS-20 THS-21 THS-22 THS-23 THS-25 THS-26 THS-27 THS-29 THS-30
ORGANISMS
Trichoptera
Hydropsyche sp. 183 84 35 Q
Cheuaatopsyche sp. Q 995 881 51 3 39 744 58 67 Q
Ochrotrichia tarsali5 368 1
Agraylea aultipunctata
Orthotrichia sp. 1
Ochrotrichia sp. 0
Helicopsyche boreal is 161 1
Oecetis sp. 11 10
Eobrachycentrus gelidae 1
61ossosoaa sp. 108
Arctopsyche grandis 3
Brachycentrus sp. 164 1
Rhyacophila sp. 1
Oligoplectrua sp. 25
Oxyethira sp. 1
Lepidoptera
Paraqyractis 8
Coleoptera
Elaidat
Optioservus sp. 7 288 4
Oubiraphia sp.
Dyticidae
Hydaticus sp. 0
Copelatus sp. Q
Hydroporus sp. 3
Aaphizoa sp. 59
Diptera
Chironoaidae 0 28 29 43 fi 199 31 0 454 9 53 0
Tipulidae 16 ! A
Siauliidae
Siauliua sp. 8 313 9 2 Q 537 395 Q 42 5 Q
Rhagionidae
Atherix variegata Q
Gastropoda
Physidae
Physa Q 9 12 25 77 C
Pelecypoda
Finger-nail daas 4 Q
TOTAL NUHBER OF KINDS 12 21 27 27 3 8 11 3 6 8 11 7
TOTAL NUHBER/SB FT 12 2679 1910 555 3 916 848 3 1511 441 177 7
TOTAL NUHBER/SQ N 129 28,826 20,551 5972 32 9856 9124 32 16,258 4745 1905 75
8 - Equals organisas collected qualitatively, arbitrarily assigned a value of one for coaputing.
Nuaber/sq a 1 nuaber/sq ft x 10.76
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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing) 4
1. REPORT NO. 2.
908/2-84-001
3. RECIPIENT'S ACCESSION NO.
4
4. TITLE AND SUBTITLE
Toxic Hot Spot Study
South Platte River Along the Front Range
August, October, 1982
5. REPORT DATE j.
6. PERFORMING ORGANIZATION CODE
7. AUTHORIS)
C.E. Runas, Maureen Martin, Dan McDonough, Loys Parrish
B. PERFORMING ORGANIZATION REPORT
ป. PERFORMING ORGANIZATION NAME AND ADDRESS
Analytical Support Branch
Environmental Services Division
U.S. Environmental Protection Agency, Region VIII
Denver, Colorado 80295
10. PROGRAM ELEMENT NO. 1
1
i
11. CONTRACT/GRANT NO. "
1
ฆ
!
12. SPONSORING AGENCY NAME AND ADDRESS
13. TYPE OF REPORT AND PERIOD COVEREO !
i
14. SPONSORING AGENCY CODE J
ฆ
1
1
I
t
16. SUPPLEMENTARY NOTES 1
i
1
a
1
i
16. ABSTRACT {
To implement a Consent Decree between the EPA and the National Resources Defense j
Council requiring that EPA identify waters which may have toxic pollution problems, a |
two phase study was designed to determine if any Toxic Hot Spots exist in selected j.
reaches of the South Platte River and selected tributary and non-tributary streams |
along the Front Range. Phase I was designed to determine if such "Toxic Hot Spots" |
exist and Phase II would focus on those areas defined in Phase I as "Toxic Hot Spots" |
and would include additional sampling locations. J
In August and October, 1982, Phase I, a screening survey of the South Platte River j
and selected tributary and non-tributary streams along the Front Range, was conducted
to determine where potential Toxic Hot Spots might exist. The area of study extended
from just downstream of Chatfield Reservoir (THS-l/RM 334.9) to Kersey, Colorado (THS-
24/RM 246.5). Samples of water, sediment and aquatic invertebrates were obtained for
chemical and biological examination.
Results of the study indicate that no "Toxic Hot Spots" were found in the study
area. An intensive Phase II study was not implemented.
17. KEY WORDS AND DOCUMENT ANALYSIS
a. DESCRIPTORS
b.lOENTIFIERS/OPEN ENDED TERMS
c. COSATI Field/Group (7
I
18. DISTRIBUTION STATEMENT
Release to the Public
19. SECURITY CLASS (This Report/
Unclassified
21. NO. OF PAGES 1
68
20. SECURITY CLASS (Thii page)
Unclassified
22. PRICE
EPA Farm 2220-1 (Rav. 4-77) Previous coition is obsolete
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