ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF ENFORCEMENT
REPORT ON
EFFECTS OF WASTE DISCHARGES
ON
WATER QUALITY OF THE
SNAKE RIVER AND ROCK CREEK
TWIN FALLS AREA
IDAHO
NATIONAL FIELD INVESTIGATIONS CENTER-DENVER
DENVER,COLORADO
AND
REGION X,
.WASHINGTON /CLEA1
FEBRUARY 1973
-------
ENVIRONMENTAL PROTECTION AGENCY
WATER QUALITY OFFICE
REPORT ON
EFFECTS OF WASTE DISCHARGES
ON
WATER QUALITY OF THE
SNAKE RIVER
AND
ROCK CREEK
TWIN FALLS AREA
IDAHO
PREPARED BY
NATIONAL FIELD INVESTIGATIONS CENTER-DENVER
DENVER, COLORADO
and
REGION X, SEATTLE, WASHINGTON
FEBRUARY 1973
-------
TABLE OF CONTENTS
Page
LIST OF TABLES lv
LIST OF FIGURES v
LIST OF APPENDICES v
GLOSSARY OF TERMS vl
I. INTRODUCTION 1
II. SUMMARY AND CONCLUSIONS 3
III. DESCRIPTION OF AREA 6
IV. WASTE SOURCES 7
A. MUNICIPAL 7
B. INDUSTRIAL 12
Amalgamated Sugar Company,
Box 127, Twin Falls, Idaho 12
Colonial Concrete, Incorporated,
Box 1151, Twin Falls, Idaho 13
Idaho Frozen Foods, Incorporated,
856 Fall Street, Twin Falls, Idaho 14
Independent Meat Company,
Box EE, Twin Falls, Idaho 15
Ready to Pour Concrete,
Box 274, Twin Falls, Idaho 16
Trout Farms and Hatcheries 17
V. STREAM SURVEYS 18
A. ROCK CREEK 18
B. SNAKE RIVER 25
ii
-------
LIST OF TABLES
Table No.
Municipal and Industrial Waste Sources
Snake River - Twin Falls, Idaho
November 1971
Summary of Analytical Data for Municipal
and Industrial Waste Source Evaluations
Snake River Basin - Twin Falls Area
November 1971 10
Summary of Bacteriological Analyses of
Municipal and Industrial Waste Discharges
Snake River Basin - Twin Falls Area
November 1971 11
Summary of Field Measurements and
Analytical Results
Snake River, Rock Creek, and Perrine Coulee
November 12-16, 1972 19
Results of Bacteriological Analyses
Snake River, Rock Creek and Perrine Coulee
November 12-16, 1971 20
Summary of Heavy Metals Data at Selected
Stations, Snake River, Rock Creek, and
Perrine Coulee
November 12-16, 1971 21
iii
-------
LIST OF FIGURES
Figure No.
1
Location Map - Snake River
Twin Falls, Idaho . . . .
Sampling Locations - Snake River
Twin Falls, Idaho (November 1971)
Follows
Page
Inside
Back Cover
Appendix
A
C
D
APPENDICES
Idaho Water Quality Standards for
Interstate Waters
(Applicable to Snake River)
Idaho Water Quality Standards for
All State Waters
Study Methods
Proposed Effluent Guidelines for
Industrial Wastewater Discharges
Status Report on Secondary Sewage Treatment
iv
-------
GLOSSARY OF TERMS
BOD - Biochemical Oxygen Demand, 5-Day
COD - Chemical Oxygen Demand
DO - Dissolved Oxygen
TOC - Total Organic Carbon
cfs - flow rate given in cubic feet per second
gpm - flow rate given in gallons per minute
mgd - flow rate given in million gallons per day
mg/1 - concentration given in milligrams per liter
LWK - live weight killed
RM - river mileage
pg/1 - concentration in micrograms per liter
ymhos/cm - unit of specific conductance (mho — the inverse
of the standard unit of electrical resistance, the
ohm) measured over a 1-centimeter distance, conven-
tionally made at 25°C.
-------
I. INTRODUCTION
The Environmental Protection Agency (EPA), Region X, requested the
National Field Investigations Center-Denver (NFIC-D), EPA, Office of
Enforcement, to conduct comprehensive water quality investigations in the
Snake River Basin (Twin Falls area). These studies were conducted from
November 2 to 17, 1971 and included an evaluation of municipal and indus-
trial wastewater treatment facilities. Subsequently, stream surveys were
conducted on the Snake River, from upstream of Perrine Coulee (RM 611.5) to
downstream from Rock Creek (RM 606.2), and on Rock Creek from RM 606.8/14.7
to the mouth. The primary objectives of these investigations were to:
1. Determine the characteristics and magnitude of municipal and
industrial waste loads discharged to the Snake River and its tributaries
in the Twin Falls Area.
2. Evaluate the impact of these waste discharges on the quality of
the receiving waters.
3. Ascertain if municipal and industrial discharges are in compliance
with applicable water quality standards and regulations.
A. Provide a basis for evaluation of Refuse Act Permit applications.
5. Determine if abatement actions are necessary.
Water Quality Standards applicable to the Snake River, an interstate
stream, were established in June 1967 by the Idaho State Board of Health
[Appendix A]. Subsequently, in September 1968, the Idaho State Board of
Health established the Water Quality Standards for all state waters [Appendix
B]. These Standards consist of three components: 1) Stream classifications
-------
(interstate waters) that designate water uses to be protected; 2) Water
quality criteria that specify water quality conditions which must be main-
tained; and 3) An implementation plan that establishes time schedules for
providing adequate wastewater control facilities for all major sources
of pollution.
Bacterial analyses reported herein were provided by the Environmental
Protection Agency (EPA), Region X, Seattle, Washington.
The cooperation of personnel of City, State, and Federal agencies and
industries in supplying information and assistance is gratefully acknowl-
edged.
The Federal Water Pollution Control Act Amendments of 1972 were
enacted subsequent to the completion of the survey and preparation of
the draft report. The document has been extensively revised to reflect
the requirements of the 1972 Amendments.
Additional studies by EPA, Region X and the Idaho State Board of
Health are under way at this time. Those studies may indicate that treat-
ment requirements more stringent than those suggested herein, may be neces-
sary in order to protect the receiving waters for their designated uses.
-------
II. SUMMARY AND CONCLUSIONS
1. The Twin Falls Municipal Wastewater Treatment Plant presently pro-
vides only primary treatment. Average BOD removal during the period of
the survey was approximately 31 percent. Disinfection of the effluent
during this study was inadequate. Failure by the City to provide "the
highest and best practicable treatment and control," constitutes a vio-
lation of the policies of the State Board of Health, as set forth in the
Idaho Water Quality Standards for interstate waters. The Idaho State
Board of Health has directed that the city provide secondary treatment
by July 1, 1973. City officials should be formally advised that Federally
promulgated regulations pertaining to secondary treatment and disinfection
of domestic wastes must be met, and that city ordinances, which will ensure
compliance with Federal pretreatment regulations, must be enacted and
enforced.
2. Information was obtained [Appendix E] indicating the intent of
Independent Meat Company and Idaho Frozen Foods, Inc., to connect process
waste discharges to the municipal collection and treatment system. Plans
for pretreatment of the process wastes have not been concluded. Company
officials should be formally advised that pretreatment must be provided to
comply with Federal regulations and applicable City ordinance requirements.
3. Rock Creek is severely degraded by industrial wastewater discharges
between RM 12.4 and the mouth. The BOD level and total- and fecal-
coliform bacterial densities increased 15, 116,000 and 80 times, respectively,
in this reach. Dissolved-oxygen concentrations were depressed at RM 6.6,
-------
RM 8.5, RM 9.4, and RM 11.8 to levels below those required by the Idaho
Water Quality Standards. Industrial waste solids blanketed portions of the
stream bottom damaging aquatic life in these stream sections, including
fish propagation.
4. Colonial Concrete, Inc., violated the Idaho Water Quality Standards
by the discharge of inorganic solids which both blanketed the bottom and
discolored the waters of Rock Creek. Company officials should be advised
that permit conditions will limit the suspended solids concentration to
20 rag/1 in the discharge.
5. The Amalgamated Sugar Company violated the Idaho Water Quality
Standards by the daily discharge into Rock Creek of 16,700 pounds of BOD,
9,580 pounds of suspended solids, and excessive numbers of coliform
bacteria. During the survey a dike forming the flume water lagoon rup-
tured , allowing an estimated 60 acre-feet of essentially untreated flume
water to enter Rock Creek. Company officials should be advised that per-
mit conditions will limit permissible discharge levels to those specified
for the sugar beet industry [Appendix D]. To meet these conditions
containment may be necessary during low flow periods. The company should
further be advised that all lagoon dikes must be constructed according
to accepted engineering practices. Any further discharge or spill will
become the basis for prosecution under applicable laws and regulations.
6. Idaho Frozen Foods, Inc., contributed to Idaho Water Quality Stand-
ards violations by the daily discharge into Rock Creek of 16,800 pounds
of BOD, 26,300 pounds of COD, 3,900 pounds of suspended solids, 175 pounds
of oil and grease, and excessive numbers of coliforra bacteria. Company
-------
officials should be formally advised that treatment must be provided to
meet the permit conditions [listed in Appendix D] if discharge to Rock
Creek is continued. If the effluent is discharged to the municipal col-
lection and treatment system, pretreatment must be provided that meets
applicable Federal regulations and City ordinances.
7. Independent Meat Company contributed to violations of Idaho Water
Quality Standards by the daily discharge into Rock Creek of 147 pounds of
BOD and excessive numbers of coliform bacteria. The intent, at the time
of this investigation, was to connect the discharge to the municipal col-
lection and treatment system.
8. The inflow of Rock Creek increased the total-coliform bacterial
density in the Snake River by 20 times. The bacterial contamination from
Rock Creek alone would cause a violation of the bacterial criteria estab-
lished for the Snake River, an interstate stream.
9. The BOD and suspended solids concentrations in Rock Creek can be
reduced to levels compatible with Water Quality Standards by: 1) elimina-
tion of wastewater discharges to Rock Creek from Idaho Frozen Foods and
Independent Meat Company and 2) reduction of the loads discharged by
Colonial Concrete, Inc., and Amalgamated Sugar Company through the installa-
tion of treatment that meets the requirements of the proposed permit con-
ditions [Appendix D].
10. Operators of fish hatcheries, in the Twin Falls area, should be
advised that permit conditions will require removal of solids from the
wastewater discharge during cleaning operations.
-------
III. DESCRIPTION OF AREA
The Snake River in the Twin Falls area (RM 611.5 to RM 606.2) flows
westwardly through a deep canyon [Figure 1]. Access to the valley floor
is limited. The width of the canyon varies, and the land between the vertical
walls and the water's edge is, for the most part, flat. It is wide enough,
however, to afford acreage for ranches, resorts, trout farms, and orchards.
Recreational areas located along the Snake River attract sportsmen, sight-
seers , and boating enthusiasts.
Perrine Coulee is a stream that, in emptying into the Snake River
(RM 611.3) downstream of the Perrine Coulee Bridge, cascades off the 500-foot
high canyon wall.
Rock Creek flows in a narrow canyon through the outskirts of Twin Falls
to its confluence ,with the Snake River (RM 606.8). The City of Twin Falls
has a population of about 22,000 persons and is the home of The College of
Southern Idaho. Agriculture and food-processing (chiefly potatoes and sugar
beets) are the primary economic activities.
The climate in the Twin Falls area is typically characterized by warm-
to-hot, dry summers and cold winters. Extreme temperatures range from minus
30° to 100°F. The average annual precipitation is approximately eight inches.
The Snake River, an interstate stream, has been classified by the Idaho
State Board of Health as suitable for domestic and industrial water supply,
irrigation, livestock watering, salmonid fish rearing, aquatic and wildlife,
and aesthetics [Appendix A]. Rock Creek, an intrastate stream, is used
for industrial water supply and recreation.
-------
Salmon Da
Salmon Creek
Reservoir
SAWTOOTH NATION AL FOREST
Figure I -l.oculion Map-Snake River. Twim FuJlls. Nako
-------
IV. WASTE SOURCES
Municipal and industrial waste sources [Table 1] in the Snake River
Basin (RM 606.2 to 611.5) were investigated during November 1971 [Figure 2,
inside back cover]. Most Industries in the Twin Falls area are connected
to the Twin Falls Wastewater Treatment Plant.. In addition to several
trout farms, the following five industries discharge wastewater directly
to Rock Creek:
(1) Amalgamated Sugar Company
(2) Colonial Concrete, Incorporated
(3) Idaho Frozen Foods, Incorporated
(4) Independent Meat Company
(5) Ready to Pour Concrete
During the study period data were obtained on water pollution control
practices at each plant which discharges wastewater to Rock Creek and the
Snake River. Information was secured through in-plant surveys, inspection
of Refuse Act Permit applications, and contact with plant representatives.
[Individual reports on each waste source evaluation are on file at the
National Field Investigations Center-Denver. Study methods for waste
source evaluation and stream surveys are found in Appendix C.]
A. MUNICIPAL
The Twin Falls Wastewater Treatment Plant, serving a population of about
22,000, was the only municipal waste source evaluated. This plant provides
primary treatment followed by disinfection. An estimated 12 percent of the
flow was industrial wastewater.
-------
TABLE 1
MUNICIPAL AND INDUSTRIAL WASTE SOURCES
SNAKE RIVER
TWIN FALLS, IDAHO
NOVEMBER, 1971
Map
a/
^'
Name
Receiving Water
Treatment Facilities
Abatement Needs
Remarks
Twin Falls Wastewater Treatment Plant Snake River
(RM 610.2)
Ready to Pour Concrete
(RM 606.8/6.1)
Rock Creek
Primary clarifiers with
disinfection
Primary and Secondary
sedimentation basins
Construction of secondary
treatment and adequate
disinfection
Construction of the best
practicable treatment
method
Disinfection was inadequate.
A new secondary treatment plant
is scheduled to be in operation
by July 1, 1973.
Colonial Concrete, Inc.
(RM 606.8/6.5)
Idaho Frozen Foods, Inc.
(RM 606.8/8.2)
Frame Trout Farm
(RM 606.8/8.A)
Rock Creek None
Rock Creek Flume water-primary
clarifier
Process water-grease
trap, rotating screens,
primary clarifier
Rock Creek None
Construction of the best
practicable treatment
method
By July 1, 1973 connect
to the municipal sewer or
provide the best practi-
cable treatment available
Sediment basins to remove
solids during periods when
raceways are cleaned
According to Company officials
sedimentation basins will be in
operation by July 1, 1972.
This waste discharge will be
connected to the Twin Falls
sewer by July 1, 1973
[Appendix E],
It was observed that the efflu-
ent contain a large amount of
solids when raceways were
cleaned.
Independent Meat Co.
(RM 606.8/11.2)
Rock Creek Condenser water-none
Process water-anaerobic
lagoon
By July 1, 1973 provide
aeration of the lagoon This discharge will be connect-
effluent and connect to ed to the Twin Falls sewer by
municipal sewer or provide July 1, 1973 [Appendix E].
the best practicable treat-
ment available
Amalgamated Sugar Company
(RM 606.8/12.4)
Rock Creek Flume water-closed cycle
LlKie wastes nmt-over-
flowing lagoons, ashes
from boiler & lime kiln
non-over-flowing lagoon
General plant waste,
Condenser water and CSF
Sewer-none
Improved operation
None
None
Secondary Treatment by
July 1, 1973
The industry should employ
the best practicable treatment
technology available to the
sugar beet industry [Appendix
D], construction should be in
accord with standard engineer-
ing practices (I.e. proper com-
paction of dikes, etc.)
a/ See Figure 2.
-------
The in-plant survey revealed that BOD removal ranged from 21 to 38
percent [Table 2]. BOD in the effluent averaged 220 mg/1. High bacterial
densities demonstrated that disinfection of the effluent was not
adequate [Table 3].
Failure by the City to provide "the highest and best practicable treat-
ment and control" constitutes a violation of the policies of the State Board
of Health, as set forth in the Idaho Water Quality Standards for interstate
waters.
The Idaho State Board of Health has required the City of Twin Falls
to have secondary treatment facilities in operation by July 1, 1973. An
engineering study has been completed and City officials indicate that this
deadline will be met.
The Federal Water Pollution Control Act Amendments of 1972 requires
that publicly owned wastewater treatment plants provide best practicable
treatment by 1977. Regulations, now being promulgated by EPA, will
limit BOD and suspended solids in the treated effluent and require dis-
*
Infection. Further, it is proposed that industrial wastewaters that
are discharged to publicly owned treatment systems be pretreated to
levels comparable to domestic sewage and to remove substances which
can inhibit treatment processes or pass through such systems in concen-
trations that are detrimental to the quality of the receiving waters.
Twin Falls must, therefore, enact and enforce ordinances that will im-
plement the requirements of these regulations.
The BOD and suspended solids will each be limited to a monthly average
of 30 mg/1 and a weekly average of 45 mg/1 or 85 percent overall reduc-
tion, whichever produces the best quality effluent. The fecal-coliforra
bacterial density will be limited to a weekly average of 400/100 ml and
a monthly average of 200/100 ml.
-------
TABLE 2
SUMMARY OF ANALYTICAL DATA FOR MUNICIPAL AND INDUSTRIAL WASTE SOURCE EVALUATIONS
SNAKE RIVER BASIN - TWIN FALLS AREA
NOVEMBER 1971
Description
Twin Falls Wastewater
Treatment Plant
Influent
Effluent
Amalgamated Sugar Company
CSF Sewer . ,
Main Sewer
Colonial Concrete, Inc.
Flow
mgd
Average
4.35
4.35
1.0
9.5
0.29^
pH
Range
7.6-8.1
7.2-7.7
8.2-8.6
8.2-8.8
Conductivity
pmhos/cm
Range
1350-2400
1500-2000
620-875
490-600
Temp "C
Range
17-19
16-18
37-40
28-33
Range
280-390
210-240
60-320
150-270
BOD
mg/1
Average
320
220
220
210
COD
mg/1
Range Average
310-799 465
231-293 255
Settleable Solids
ml/1
Range
6-15
0.1-0.
0.5-1.
1.0-1.
Average
10
2 0.2
7 0.9
8 1.3
17a/
Suspended
Solids mg/1
Average
55
155
40, 00^
Oil &
Grease
mg/1
24-'
Frame Trout Farm
Idaho Frozen Foods, Inc.
Combined effluent
Independent-Meat Company
Anaerobic lagoon
effluent
Ready to Pour Concrete
3.2-' 7.6-7.9 800-900
11-12
1.5 6.2-10.5 1800-2400 21-24
0.1 6.7-7.6 2150-2850 21-23
0.22 8.0-8.3 1100-1180 5-6
1-4
1300-1400
160-190
1370
175
1870-2360 2100
1.1-4.5
2.3
158-574 355 0.7-2.0 1.2
320
a/ There is only one sample.
b/ The main sewer contains general plant wastes and condenser water.
cl This is an estimated value.
d/ Flow was obtained from the permit application.
-------
TABLE 3
SUMMARY OF BACTERIOLOGICAL ANALYSES OF MUNICIPAL AND INDUSTRIAL WASTE DISCHARGES
SNAKE RIVER BASIN - TWIN FALLS AREA
NOVEMBER 1971
Map Key-'
Station Description
Dates
Total
Collfonn/100 ml
Arlth.
Maximum Mean Minimum
Fecal
Collform/100 ml
Arith.
Maximum Mean Minimum
Fecal
Streptococcus/lOO ml
Arith.
Maximum Mean Minimum
Twin Falls Wastewater
Treatment Plant effluent
after chlorination
Idaho Frozen Foods, Inc.
combined effluent
11/9-15/71 >800,000 >252,000
11/9-15/71 l.SOOxlO6 360xl06
Frame Trout Farm effluent 11/12-16/71 7,200 6,100
Independent Meat Co.
Condenser water discharge 11/9-11/71 110,000 39,000
Anaerobic lagoon effluent 11/9-15/71 700,000 251,000
Amalgamated Sugar Company
combined effluent 11/9-15/70 1,100,000 675,000
140
1.7xl06
4,800
2,000
100,000
300,000
>60,000 H7.300
<10 62,000 16,800
60
1,600,000 <500,000 17,000 71xl06 12.4xl06 52,000
10
500 250 60
62,000 49,000 40,000
100
60 20
2,000 1,480 650
40,000 119,400 4,500
350,000 <155,000 <100,000 1,000,000 276,000 76,000
a/ See Figure 2.
-------
12
Design data pertaining to the required improvements to the Twin Falls
Wastewater Treatment Plant were not available. Thus, no evaluation of the
capability to meet the new Federal requirements could be made.
B. INDUSTRIAL
Permit conditions for most classes of industrial waste guidelines
are to be promulgated by EPA. Effluent guidelines [Appendix D] for the
permit conditions have been provided to the EPA Regional Permit Program
Offices. The final guidelines are expected to be essentially those set
forth in the proposed guidelines. The industrial waste sources examined
during the investigation have been evaluated in terms of the expected
permit conditions. Those evaluations are summarized in the following
paragraphs.
Amalgamated Sugar Company, Box 127, Twin Falls, Idaho.
This sugar mill is a Steffen house operation and processes about
4,800 tons of beets per day. Flume water, lime wastes, and ash-laden waste-
waters are treated in a "closed" water recycle system. All other wastes are
combined and discharged to Rock Creek without treatment.
An in-plant survey was conducted November 8 to 17, 1971, to evaluate
wastewater being discharged from this plant. During the survey a dike,
forming the flume-water emergency storage pond, ruptured due to improper
construction, allowing an estimated 60 acre-feet of flume water to spill
*
into Rock Creek.
* A separate report entitled "Report on the In-Plant Evaluation and Investi-
gation of an Accidental Spill at the Amalgamated Sugar Company, Twin Falls,
Idaho" documenting this spill was prepared by the NFIC-D and forwarded to
Region X, Seattle, Washington, February 4, 1972.
-------
13
Results of the in-plant survey showed that the average daily loads
discharged to Rock Creek were 16,700 pounds of BOD (3.5 Ib/ton of beets)
and 9,580 pounds of suspended solids (2.0 Ib/ton of beets), respectively
[Table 2]. This discharge depressed the dissolved oxygen in Rock Creek
causing a violation of Idaho Water Quality Standards. These loads do not
include the 60 acre-feet of flume water discharged during the spill. The
total-and fecal-coliform bacteria densities in the effluent averaged
675,000/100 ml and less than 155,000/100 ml, respectively [Table 3]. This
discharge resulted in average total- and fecal-coliform bacteria densities
in Rock Creek [RM 11.8] of 223,600/100 ml and 11,900/100 ml, respectively.
These densities violate the Idaho Water Quality Standards applicable to
all waters of the State.
In order to protect the quality of the receiving waters, meet appli-
cable State and Federal water quality standards, and comply with the 1972
Amendments, Amalgamated Sugar Company must implement treatment practices
that will attain or surpass the effluent guidelines for the sugar-beet
industry [Appendix D].
Colonial Concrete, Incorporated, Box 1151, Twin Falls, Idaho
Sand is washed at the rate of 25 tons/hour at this plant. Wash water
is obtained from a seep (spring) at the rate of 200 gpm and subsequently,
discharged to Rock Creek without treatment. A sample of the highly turbid
effluent contained 17 inl/1 of settleable solids and 40,000 mg/1 of sus-
pended solids [Table 2].
Rock Creek immediately downstream from this discharge was visibly
discolored. This discharge caused a sediment blanket which covered the
-------
14
bottom of Rock Creek, interfering with the beneficial use of the creek
as a fishery and violating the Idaho Water Quality Standards for all
state waters.
According to a Colonial Concrete official, primary and secondary
settling ponds were to be constructed and in operation by July 1, 1972.
Application has not been made for a Refuse Act Permit to discharge waste-
waters to Rock Creek, a tributary to a navigable river.
Company officials should be advised that application for a discharge
permit must be made and that the new treatment facilities must reduce
suspended solids in the discharge to not more than 20 mg/1 [Appendix D],
Idaho Frozen Foods, Incorporated, 856 Fall Street, Twin Falls, Idaho
This Company processes 500 tons of potatoes per day from September to
June to produce frozen packaged potatoes (french fries, shoestring potatoes,
and hashbrowns). Potatoes are trucked to the plant and flumed to the pro-
cess line. Flume water is treated in a clarifier (35 ft diameter, 14 ft
deep) with the majority of the water being recycled. Solids removed from
the clarifier are spread on nearby fields. Excess clarified water is
discharged to Rock Creek.
Process wastewater passes through a grease trap into two rotating
screens and then to a clarifier (55 ft diameter, 12 ft deep). Solids
removed by the rotating screens and clarifier are used for cattle feed.
Effluent from the clarifier combines with the excess flume water and is
discharged to Rock Creek.
A survey was conducted November 3 to 16, 1971, to ascertain waste loads
discharged from this plant. Analytical results [Table 2] indicated that
-------
15
Idaho Frozen Foods, Incorporated, discharged average daily loads of 16,800
pounds of BOD (34 Ib/ton of potatoes), 26,300 pounds of COD (53 Ib/ton of
potatoes), and 3,900 pounds of suspended solids (8 Ib/ton of potatoes).
This discharge depressed the dissolved oxygen in Rock Creek resulting
in a violation of Idaho Water Quality Standards. A sample of the effluent
contained 14 mg/1 (175 Ib/day) of oil and grease. Total- and fecal- coliform
bacteria densities in the combined effluent ranged from 1,700,000 to
1,600,000,000/100 ml and 17,000 to 1,600,000/100 ml, respectively [Table 3].
These coliform organisms contributed to severe bacterial contamination
of Rock Creek.
The Idaho State Board of Health has required Idaho Frozen Foods, Incor-
porated, to provide adequate treatment by July 1, 1973. Company officials
proposed to either connect the wastewater discharge to the municipal sewer
or provide adequate treatment before this date [Appendix E],
Company officials should be advised that treatment, to conform with
the permit conditions listed in Appendix D, must be provided if the dis-
charge is continued to Rock Creek. If the effluent is discharged to the
municipal collection and treatment system, pretreatment must be provided
to meet applicable Federal regulations and City ordinances.
Independent Meat Company, Box EE, Twin Falls, Idaho
This Company slaughters cattle and hogs, processes meat, cures and
smokes meat products, manufactures sausage products, and renders edible
fat. The rated daily capacity of the plant is 150 hogs and 50 cattle.
All wastewater except condenser water is discharged to an anaerobic
-------
16
lagoon. The lagoon effluent is discharged to Rock Creek. Condenser water
is discharged directly to Rock Creek.
An in-plant survey was conducted November 8 to 11, 1971, to ascertain
waste loads discharged from this plant. Results of the analysis [Table 2]
indicate that Independent Meat Company discharged average daily loads of
147 pounds of BOD (approximately 1.7 lb/1,000 Ib LWK) and 7 pounds of
oil and grease (approximately 0.08 lb/1,000 Ib LWK). The total- and
fecal-coliform bacteria densities ranged from 100,000 to 700,000/100 ml
and 40,000 to 62,000/100 ml, respectively [Table 3]. These coliform
organisms contributed to severe bacterial contamination in Rock Creek.
Wastewater discharged from Independent Meat Company contributed to
the depression of DO concentrations in Rock Creek. The dissolved oxygen
ranged from 69-94 percent of saturation upstream (RM 11.8) of the dis-
charge to 60-68 percent of saturation downstream (RM 9.4), a violation
of the Idaho Water Quality Standards.
•\
The Idaho State Board of Health has required Independent Meat Company
to provide adequate treatment by July 1, 1973. The Company intends to
connect to the municipal sewer before this date [Appendix E].
Company officials should be advised that pretreatment must be pro-
vided to meet the Federal regulations and applicable City ordinances.
If the Company continues to discharge to Rock Creek, treatment must be
provided to meet the permit conditions [listed in Appendix D].
Ready to Pour Concrete, Box 274, Twin Falls, Idaho
The Company operates eight months annually, washing sand and gravel
at a maximum rate of 600 cubic yards/day. Wash water is obtained from a
-------
17
drainage ditch (0.13 mgd) and discharged after use to Rock Creek following
primary and secondary sedimentation. An eight-hour composite sample col-
lected on November 8, 1971, showed the effluent discharged to Rock Creek
contained less than 0.1 ml/1 of settleable solids [Table 2].
Visual observations of the sedimentation basins showed short circuit-
ing of wastewater through the secondary basin. This condition can be cor-
rected by the relocation of the discharge from the primary basin into the
secondary basin along with the addition of a dike in the primary basin.
Trout Farms and Hatcheries
Blue Lakes Trout Farm, Inc.; Canyon Trout Farm; Frame Trout Farm; and
Twin Falls Fish Hatchery raise trout for commercial and stocking purposes.
Water is obtained from major springs and discharged without treatment to
Rock Creek and the Snake River.
An in-plant survey was conducted at Frame Trout Farm during November
12 to 16, 1971, to ascertain waste loads discharged into Rock Creek. Results
of the analyses indicate that the effluent contained 1 to 4 mg/1 of BOD
[Table 2]. Visual observations showed that when raceways are cleaned large
concentrations of solids (fish droppings, excess food, etc.) are discharged
into the receiving waters.
Operation of Blue Lakes Trout Farm, Inc.; Canyon Trout Farm and Twin
Falls Fish Hatchery is similar to that of Frame Trout Farm. It is believed,
therefore, that the effluents from the other three trout farms would be of
a similiar quality to that discharged from Frame Trout Farm.
Permits to be issued to the trout farms should specify that provision
be made for removal of solids for the effluent during cleaning operations.
-------
18
V. STREAM SURVEYS
During the period November 12 to 16, 1971, a water-quality survey was
conducted on the Snake River (RM 606.2 to RM 611.5) and on Rock Creek from
upstream of Twin Falls (RM 14.7) downstream to the mouth [Figure 2]. [Results
of chemical and bacteriological analyses are provided in Tables 4, 5, and 6.]
A. ROCK CREEK
Rock Creek originates in the Sawtooth National Forest and flows north-
west through Twin Falls to its confluence with the Snake River at RM 606.8.
Upstream of Twin Falls at RM 14.7, Rock Creek was relatively unpolluted.
Dissolved-oxygen concentrations ranged from 8.4 to 11.6 mg/1 (84-112
percent of saturation) and total- and fecal-coliform bacterial densities
averaged 190 and less than 35/100 ml, respectively. Water temperature
ranged from 5° to 9° C, and BOD from 1 to 3 mg/1. From RM 14.7 to the
mouth, Rock Creek flows through a deep narrow canyon where there is a
drop in elevation of approximately 900 ft.
The Amalgamated Sugar Company [RM 12.4] discharged an average of
16,700 pounds of BOD per day. Average total- and fecal-coliform bacterial
densities in the effluent were 675,000 and less than 155,000/100 ml, re-
spectively. At Eastland Road (RM 11.8) the DO in Rock Creek decreased
to a range of 6.8 to 8.8 mg/1 (69 to 94 percent of saturation). Temper-
ature ranged from 9° to 12.5°C, a temperature increase of approximately
3°C. BOD ranged from 40 to 70 mp/1. Average total- and fecal-coliform den-
sities increased to 223,600 and 11,900/100 ml, respectively. This decrease
in DO and the increase in temperature and bacterial densities violated
the Idaho Water Quality Standards [Sections 6A, 6B, and 6D - Appendix B].
-------
TABLE 4
SUMMARY OF FIELD MEASUREMENTS AND ANALYTICAL RESULTS
SNAKE RIVER, ROCK CREEK, AND PERRINE COULEE
November 12-16, 1971
Map ,
Key— Station Description
Flow
CFS pH
Average Range
Total
Conductivity D.O. D.O. Alkalinity BOD
limbos/cm Temp °C mg/1 % Sat mg/1 as CaCOj mg/1 __
Range Range Range Range Average Range Average Range Average
TOC
mg/1
10
11
Snake River downstream 8,550 (est)
from Rock Creek (RM 606.2)
Snake River upstream 8,350 (est)
of Rock Creek and
downstream from Twin Falls
wastewater treatment plant
(RM 610.0)
8.0-8.4 340-525 3.0-7.0 10.1-12.2 93-106
8.0-8.3 400-480 3.5-6.0 10.4-12.0 94-103
Snake River upstream
of Perrine Coulee
(RM 611.5)
8,300 (est) 8.0-8.3 320-460 4.0-7.0 10.4-11.3 91-99
Perrine Coulee near 13.8
mouth (RM 611.3/0.2)
Rock Creek near mouth 170 (est)
(RM 606.8/0.2)
Rock Creek downstream 165
from Canyon Trout Farm
(RM 606.8/4.3)
Rock Creek upstream of
US-30 Highway Bridge
(RM 606.8/6.6)
Rock Creek upstream of
Frame Trout Farm
(RM 606.8/8.5)
Rock Creek upstream of
Twin Falls Fish Hatchery
(RM 606.8/9.4)
Rock Creek at Eastland
Road Bridge (RM 606.8/11.8)
Rock Creek at North 33
3400 Road Bridge
(RM 606.8/14.7)
8.3-8.7 400-540
7.8-
7.9-i
8.3
8.3
2.0-6.0 10.4-12.0 91-103
8.1-8.3 650-900 8.0-11.0 8.5-10.6 84-100
7.7-8.0 750-900 8.0-12.0 6.4-8.2 66-80
7.2-8.0 750-875
9.0-11.0 5.2-7.0 54-71
7.2-7.9 700-750 8.5-12.0 5.8-7.0 62-69
7.7-7.9 700-750
650-800
650-725
9.0-12.0 5.6-6.7 60-68
9.0-12.5 6.8-8.8 69-94
5.0-9.0 8.4-11.6 84-112
149
141
141
154
243
251
232
217
215
213
212
2-8 4
1-3 2
2-3 2
2-3 3
14-43 29
19-42 30
14-46 32
22-140 57
26-130 62
1-3 2
3-6
3-6
3-4
5-7
7-11 11
8-18 11
6-16 12
7-24 12
9-24 12
40-100 65 10-115 38
3-4
a/ See Figure 2.
-------
TABLE 5
RESULTS OF BACTERIOLOGICAL ANALYSIS
SNAKE RIVER, ROCK CREEK, AND PERRINE COULEE
NOVEMBER 12-16, 1971
Total Coliform Fecal Coliform Fecal Streptococcus
Count/100 ml Count/100 ml Count/100 ml
Map ,
Key^'
1
2
3
4
5
6
7
8
9
10
11
Station Description
Snake River downstream from
Rock Creek (RM 606.2)
Snake River upstream of Rock
Creek and downstream from Twin
Falls wastewater treatment plant
(RM 610.0)
Snake River upstream of Perrine
Coulee (RM 611.5)
Perrine Coulee near mouth
(RM 611.3/0.2)
Rock Creek near mouth
(RM 606.8/0.2)
Rock Creek downstream from
Canyon Trout Farm (RM 606.8/4.3)
Rock Creek upstream of US -30
Highway Bridge (RM 606.8/6.6)
Rock Creek upstream of Frame
Trout Farm (RM 606.8/8.5)
Rock Creek upstream of Twin
Falls Fish Hatchery (RM 606.8/9.4)
Rock Creek at Eastland Road
Bridge (RM 606.8/11.8)
Rock Creek at North 3400 Road
Bridge (RM 606.8/14.7)
Maximum
1,500,000
48,000
74,000
610
100,000,000
19,000,000
>800,000
460,000
150,000
450,000
400
Arith. Arith.
Mean Minimum Maximum Mean
480,000 42,000 500 340
24,900 7,300 100 60
38,000 9,000 120 60
280 160 170 45
22,100,000 80,000 7,000 <2,400
438,000 180,000 4,100 1,400
>440,000 100,000 21,000 9,000
157,000 48,000 36,000 14,300
65,800 15,000 27,000 8,800
223,600 15,000 33,000 11,900
190 40 80 35
Minimum Maximum
<10 28,000
30 900
<10 350
<10 300
<1,000 820,000
170 380,000
<1,000 560,000
500 370,000
<100 <230,000
<100 83,000
<10 470
Arith.
Mean
13,600
410
230
145
282,000
204,000
297,000
>129,000
<59,000
45,200
140
Minimum
850
200
100
30
180
100,000
16,000
20,000
1,900
5,000
ro
<10 °
See Figure 2,
-------
TABLE 6
SUMMARY OF HEAVY METAL DATA AT SELECTED STATIONS
SNAKE RIVER, ROCK CREEK AND PERRINE COULEE
NOVEMBER 12-16, 1971
Map Key^ Station Description
1 Snake River downstream from Rock Creek (RM 606.2)
2 Snake River upstream of Rock Creek and downstream
from Twin Falls Wastewater Treatment Plant (RM 610.0)
3 Snake River upstream of Perrine Coulee (RM 611.5)
4 Perrine Coulee near mouth (RM 611.3/0.2)
5/ Rock Creek near mouth (RM 606.8/0.2)
11 Rock Creek at North 3400 Rock Bridge (RM 606.8/14.7)
range
<0.01
<0.01
<0.01
<0.01
<0.01
<0.01
Copper
mg/1
range
<0. 02-0.04
<0. 02-0. 08
<0. 02-0 .06
-------
22
Water quality of Rock Creek (RM 11.2) was further degraded by waste-
water from Independent Meat Company. This company discharges an effluent
containing an average of 147 pounds of BOD per day and an average total-
and fecal-coliform bacteria density of less than 251,000 and 71,000/100 ml,
respectively. Rock Creek at RM 9.4 showed a DO concentration range of 5.6
to 6.7 mg/1 (60 to 68 percent of saturation) and total- and fecal-coliform
bacterial densities of 65,800 and 8,800/100 ml, respectively, both of which
are violations of the Idaho State Water Quality Standards.
The quality of Rock Creek from RM 9.4 downstream to RM 8.5 did not
change appreciably, with the exception of coliform bacteria densities.
The average total- and fecal-coliform bacterial densities increased from
65,800 to 157,000/100 ml and from 8,800 to 14,300/100 ml, respectively.
Several cattle holding pens, located on the banks of Rock Creek in this
reach, are the probable reason for this increase.
Idaho Frozen Foods was discharging, also at the time of the survey,
an effluent (RM 8.2) that contained an average of 16,800 pounds of BOD
per day. Total- and fecal-coliform bacterial densities ranged from
1,700,000 to 1,600,000,000/100 ml, and from 17,000 to 1,600,000/100 ml,
respectively. Idaho bacterial criteria were violated in this reach
[RM 8.2 to 6.6] of Rock Creek.
Colonial Concrete, Inc., discharged highly turbid wastewater to Rock
Creek at RM 6.5. This discharge results in the deposit of sediment in the
creek, a violation of Water Quality Standards.
From RM 4.3 to the mouth there were no apparent wastewater discharges.
The flow in this reach was rapid and turbulent, allowing for reaeration.
Near the mouth DO values were similar to those observed at RM 14.7 (i.e.,
-------
23
ranges of 8.5 to 10.6 mg/1 and 8.4 to 11.6 mg/1, respectively). However, the
BOD and the total- and fecal-coliform bacterial densities had increased by
fourteen, five and two orders of magnitude, respectively [Tables 4 and 5].
Visual observations made during the survey showed that sludge beds
existed in Rock Creek downstream from Amalgamated Sugar Company and Idaho
Frozen Foods. Sphaerotilus was observed in the creek from just downstream
from the Amalgamated Sugar Company discharge to the mouth. Due to the turbu-
lent mixing action of Rock Creek, large amounts of foam occurred near the
mouth of Rock Creek.
Water samples collected at selected stations in Rock Creek show that
heavy metals do not pose a water quality problem [Table 6].
In summary, the water quality of Rock Creek was found to be severely
degraded by industrial discharges between RM 606.8/14.7 and RM 606.8/4.3.
Due to water turbulence in Rock Creek the DO concentrations at the mouth
were similar to those observed upstream of all industrial discharges
(RM 14.7). Between these stations the BOD levels and the total- and
fecal-coliform bacterial densities on the other hand, increased by factors
of 14; 116,000; and 80 times, respectively.
Industrial discharges from Amalagamated Sugar Company, Independent
Meat Company, Idaho Frozen Foods, and Colonial Concrete, Inc., resulted in
violations of Section 6A, 6B, and 6D of the Idaho State Standards applicable
to all state waters. As noted earlier, discharges from Idaho Frozen Foods
and Independent Meat Company are to be connected by July 1, 1973, to the
Twin Falls Municipal Wastewater Treatment Plant [Appendix E]. This will
reduce the pollutant loads being discharged to Rock Creek.
-------
24
B. SNAKE RIVER
The flow of the Snake River in the Twin Falls area is controlled by
Milner Reservoir (RM 640.0). The flow observed in the Snake River down-
*
stream from the reservoir was 8,350 cfs. The River upstream of Perrine
Coulee (RM 611.5) had high DO and low BOD ranges (10.4 to 11.3 rag/1 and
less than 2 to 3 mg/1, respectively). However, the average total- and
fecal-coliform bacterial densities were high (38,000 and 9,000/100 ml,
respectively), thus constituting a violation of the Idaho Water Quality
Standards.
Perrine Coulee and the Twin Falls Wastewater Treatment Plant discharge
to the Snake River at RM 611.3 and RM 610.2, respectively. Perrine Coulee
discharged approximately 340 pounds of BOD per day (3 mg/1) and the average
total- and fecal-coliform bacterial densities were 280 and 45/100 ml,
respectively. Effluent from the municipal plant contained 8,120 pounds
of BOD per day (220 mg/1), and the total- and fecal-coliform bacterial
densities ranged from 40 to greater than 800,000/100 ml and from less than
10 to greater than 60,000/100 ml, respectively. The effect of these two
inflows on the quality of the Snake River could not be measured downstream
at RM 610.0.
Rock Creek joins the Snake River at RM 606.8. The 170 cfs from Rock
Creek contained 26,500 pounds of BOD per day and total- and fecal-coliform
bacteria densities of 22,100,000 and 2,400/100 ml, respectively. The Snake
River at RM 606.2 shows the effect of Rock Creek even though the dilution
* Flow is for the Snake River near Kimberly, Idaho, and was provided by
the USGS Water Resources Division, Boise, Idaho.
-------
25
was 49-to-l. Average levels of BOD increased from 2 mg/1 (RM 610.0) to
4 mg/1 (RM 606.2). Average total- and fecal-coliform bacterial densities
increased from 24,900 to 480,000/100 ml and from 60 to 340/100 ml, re-
spectively at these two River stations. This increase in total coliform
organisms violates Idaho Water Quality Standards for Interstate Waters.
Water samples collected at selected stations in the Snake River show
that heavy metals do not pose a water quality problem [Table 6].
In summary, both Perrine Coulee and the Twin Falls Municipal Wastewater
Treatment Plant appear to have little effect on the water quality of the
Snake River. Rock Creek, however, adversely affects the water quality of
the Snake River, increasing the total-colifonn bacterial density by 20
times. This increase violates the bacterial criteria established for the
Snake River as stated in the Idaho Water Quality Standards for Interstate
waters [Appendix A].
-------
APPENDIX A
IDAHO WATER QUALITY STANDARDS
FOR INTERSTATE WATERS
(APPLICABLE TO SNAKE RIVER)
JUNE 1967
-------
RULES AND REGULATIONS
FOR
STANDARDS OF WATER QUALITY FOR THE
INTERSTATE WATERS OF IDAHO
AND DISPOSAL THEREIN OF SEWAGE AND INDUSTRIAL WASTES
IDAHO STATE BOARD OF HEALTH
June 1967
-------
TABLE OF CONTENTS
Page
Definitions A-l
Policies of the State Board of Health A-2
Restrictions on the Discharge of Sewage and Industrial
Wastes and Human Activities which Affect Water Quality
in the Waters of the State A-2
Maintenance of Standards of Quality A-3
General Water Quality Standards for Interstate Streams A-3
Water Quality Standards for Public Waters of the
Main Stem of the Snake River from the Wyoming-
Idaho Border (River Mile 918) to the Oregon-
Idaho Border (River Mile 407); North Fork Teton
River; Henry's Fork from Junction with Falls
River to the Snake River; Raft River; Goose
Creek; Salmon Falls Creek; Jarbridge River and
the Bruneau River A-5
Appendix 1 - Laboratory Tests and Procedures A-6
Appendix 2 - Beneficial Uses of Interstate Streams .... A-7
-------
DEFINITIONS A-l
The following definitions shall apply to the interpretation and the enforce-
ment of these regulations:
"Sewage" means the water-carried human or animal waste from residences, build-
ings, industrial establishments or other places together with such ground water
infiltration and surface water as may be present. The admixture with sewage as
above defined of industrial wastes or wastes, as defined in the following para-
graphs 2 and 3, shall also be considered "sewage."
"Industrial waste" means any liquid, gaseous, radioactive or solid waste sub-
stance or a combination thereof resulting from any process of industry, manufacturing,
trade or business, or from the development or recovery of any natural resources.
"Wastes" means sewage, industrial wastes, and all other liquid, gaseous, solid,
radioactive or other substances which will or may cause pollution or tend to cause
pollution of the public waters of the state.
"Pollution" means such contamination or other alteration of the physical, chem-
ical or biological properties of the public waters of the state, including change in
temperature, taste, color, turbidity or odor of the waters, or such discharge of any
liquid, gaseous, solid, radioactive or other substance into the waters of the state
which either by itself or in connection with any other substance present, will.or
can reasonably be expected to create a public nuisance or render such waters harmful,
detrimental or injurious to public health, safety or welfare, or to domestic, commer-
cial, industrial, agricultural, recreational or other legitimate uses or to livestock,
wildlife, fish or other aquatic life or the habitat thereof.
"Standard" or "standards" means such measure of quality or purity in relation to
their reasonable and necessary use as may be established by the State Board of Health.
"River mile" means the distance in miles a specified location is from the mouth
of the stream.
-------
1. POLICIES OF THE STATE BOARD OF HEALTH A-2
A. INTERSTATE COMPACTS, COURT DECREES AND ADJUDICATED WATER RIGHTS
It shall be the policy of the State Board of Health that the adop-
tion of water quality standards for interstate streams and the enforce-
ment of such standards is not intended to conflict with the apportion-
ment of water to the State of Idaho through any of the interstate
compacts or court decrees or to interfere with the rights of Idaho
appropriators in the utilization of the water appropriations which have
been granted to them under the statutory procedure or water quality
criteria established by mutual agreement of the participants in inter-
state water pollution control enforcement procedures.
B. HIGHEST AND BEST PRACTICABLE TREATMENT AND CONTROL REQUIRED
It shall be the policy of the State Board of Health that, notwith-
standing the water quality standards contained herein, where a higher
standard can be achieved, the highest and best practicable treatment
and/or control of wastes, activities and' flows shall be provided so as
to maintain dissolved oxygen at the highest desirable levels and overall
water quality as good as possible, and water temperatures, coliform bac-
teria concentrations, dissolved chemical substances, toxic materials,'
radioactivity, turbidities, color, odor and other deleterious factors at
the lowest desirable levels. Such policy to apply not only to existing
waste sources but to future waste sources as they may develop and for
such other interstate streams not listed herein.
2. RESTRICTIONS ON THE DISCHARGE 0? SEWAGE AND INDUSTRIAL WASTES AND HUMAN
ACTIVITIES WHICH AFFECT WATER QUALITY IN THE WATERS OF THE STATE
No wastes shall be discharged and no activities shall be conducted in
such a way that said wastes or activities either alone or in combination with
other wastes or activities will violate or can reasonably be expected to
-------
A-3
violate the water quality standards contained herein.
3. MAINTENANCE OF STANDARDS OF QUALITY
A. The degree of sewage or waste treatment required to restore and maintain
the standards of quality shall be determined in each instance by the
State Board of Health and shall be based upon the following:
(1) The uses which are or may likely be made of the receiving stream.
(2) The size and nature of flow of the receiving stream.
(3) The quantity and quality of the sewage or wastes to be treated.
(4) The presence or absence of other sources of pollution on the same
watershed.
B. The water quality standards are subject to revision (following public
hearings and concurrence of the U. S. Secretary of Interior in the case
of interstate streams) as technical data, surveillance programs, and
technological advances make such revisions desirable.
C. For purposes of enforcement of these standards, sampling will be done at
a point where these standards can be evaluated, except for areas immed-
iately adjacent to outfalls. Cognizance will be given to the opportunity
for admixture of waste effluents with receiving waters.
D. Tests or analytical procedures to determine compliance with standards
will, insofar as practicable and applicable, be made in accordance with
the methods given in the twelfth edition of "Standard Methods for the
Examination of Water and Waste Water" published by the American Public
Health Association, or in accordance with tests or analytical procedures
that have been found to be equal or more applicable and satisfactory and
accepted and approved by the State Beard of Health, as set forth in
Appendix 1.
4. GENERA* v." ""El 'MJ.'.LI'""' ^"" **DA?D£ F^l 3'TTERS"/ "*" E"*!lE/i-'-!£
The following General Water Quality Standards shall apply to all interstate
-------
A-4
waters of the state in addition to the water quality standards set forth herein
for the various specified and unspecified interstate waters of the state. Inter-
state waters shall not contain:
A. Toxic or Other Deleterious Substances (pesticides, phenolics and related
organic and inorganic materials)
(1) Toxic chemicals of other than natural origin in concentrations found
to be of public health significance or adversely affect the use in-
dicated.* (See Appendix 2)
(2) Deleterious substances of other than natural origin in concentrations
that cause tainting of edible species or tastes and odors to be im-
parted to drinking water supplies.
B. Radioactive Materials
(1) Radioactive materials of other than natural origin shall not be
present in any amount which reflects failure in any case to apply
all controls which are physically and economically feasible. In no
case shall such materials exceed the limits established in the 1962
U.S. Public Health Service Drinking Water Standards.
C. Aesthetic Considerations (water offensive to the senses of sight, taste
smell or touch)
(1) Floating or submerged matter not attributable to natural causes.
(2) Excess nutrients of other than natural origin that cause visible slime
growths or other nuisance aquatic growths.
(3) Visible concentrations of oil,, sludge deposits, scum, foam or other
wastes that may adversely affect the use indicated.
(4) Objectionable turbidity which can be traced to a point source.
*Guides such as the Water Quality Criteria published by the State of California
Water Quality Control Board" (Second Edition, 1963) will bo used in eval-jntir.g th»
tolerances of the various toxic chemicals for the use indicated.
-------
A-5
WATER QUALITY STANDARDS FOR PUBLIC WATERS OF THE MAIN STEM OF THE SNAKE RIVER FROM
THE WYOMING-IDAHO BORDER (RIVER MILE 918) TO THE OREGON-IDAHO BORDER (RIVER MILE 407);
NORTH FORK TETON RIVER; HENRY'S FORK FROM JUNCTION WITH FALLS RIVER TO THE SNAKE
RIVER; RAFT RIVER; GOOSE CREEK; SALMON FALLS CREEK; JARBRIDGE RIVER AND THE BRUNEAU
RIVER.
1. No wastes shall be discharged and no activities shall be conducted which either
alone or in combination with other wastes or activities will cause in these waters:
A. Organisms of the Coliform Group where Associated with Fecal Sources (MPN,
equivalent MF or appropriate test using a representative number of samples)
Average concentrations of coliform bacteria to exceed 1,000 per 100
milliliters.with 20 per cent of samples not to exceed 2,400 per 100 milli-
liters.
B. Dissolved Oxygen (DO)
DO to be less than 75 per cent of saturation at seasonal low or less
than 100 per cent saturation in spawning areas during spawning, hatching
and fry stages of salmonid fishes.
Exception: Five parts per million at Milner Dam based on a minimum stream
flow of 600 cubic feet per second at this point.
C. Hydrogen Ion Concentration (pH)
pH values to be outside the range of 7.0 to 9.0. Induced variation
not to be more than 0.5 pH unit.
D. Temperature
Any measurable increase when stream temperatures are 68°F- or above,
or more than 2°F. increase when stream temperatures are 66°F. or less.
-------
A-6
Appendix 1
LABORATORY TESTS AND PROCEDURES
Standard Methods for the Examination of_ Water and Waste water, Twelfth Edition,
1965, prepared and published jointly by American Public Health Association,
American Water Works Association, Water Pollution Control Federation.
-------
BENEFICIAL
USES TO
Appendix 2
BE PROT.ECTED
\
Bear River, Cub River, Worm Creek, and
Malad River
Bear Lake
Henry's Fork and North Fork Teton River
Snake River:
Wyoming Border to American Falls Re?ervcir
American Falls P.eservoir to Hagerman
Hagerman to Hells Catiyon Dam
Hells Canyon Dam to Lewis tc-n
Raft River, Goose Creek, Salmon Falls Creek,
JarbrJdge River, Eruneau River
Palouss River
Pend Oreille River, Pend Oreille Lake, Priest
Lake, Coeur d'Alene Lake
Kootenai River, Clark Fork River, Moyie
River, Priest River
Spokane River, Coeur d'Alene River above
Enaville (4)
Domestic
Water
Supply
X(l)
X
X
X
X
X
X
X
X
X
X
X
Industrial
Water
Supply
X
X
X
X
X
X
X
X
X
X
X
X
Irrigation
X
X
X
X
X
X
X
X
X
X
X
X
Livestock
Watering
X
X
X
X
X
X
X
X
X
X
X
Salmon id
Fish
Spa vm ing
X(5)
X
X
X
X(3)
X
X{5)
X
X
X(5)
Salmon id
Fish
Rearing
X
X
X
X
X
X
X
X
X
X
X
X
Other Fishing &
Acquatic Life
X
X
X
X
X
X
X
X
X
X
X
X
Hunting fie
Wildlife
X
X
X
X
X
' X
X
X
X
X
X
X
Water
Skiing and
Swimming
X(2)
X
xm
xi2L.
X-'2)
U_*i2U
X
X(2)
X
X
X
X
Pleasure
Seating
•
X(2)
X
_XilL_
_xi?; .
X!T-
X^2'?
X
JLL2.''
X
X
Aesthetic
Qualities
X
X
X
i£
X
X
X
X
X
X
X
X
(1) Domestic water supply for Bear River
(2) Water skiing and pleasure boating on reservoir portions of stream
(3) Anadromous fish passage use as well
(4) Determination of uses of Coeur d'Alene River below Enaville will be
done when construction of domestic and mine waste treatment facilities
has been completed, or not later than July 1, 1969
(5) Upper reaches of stream
-------
APPENDIX B
IDAHO WATER QUALITY STANDARDS
FOR ALL STATE WATERS
SEPTEMBER 1968
-------
RULES AND REGULATIONS
FOR
THE ESTABLISHMENT OF STANDARDS OF WATER QUALITY
AND FOR WASTE WATER TREATMENT REQUIREMENTS FOR WATERS OF THE STATE OF IDAHO
IDAHO STATE BOARD OF HEALTH
September 1968
-------
B-l
RULES AND REGULATIONS
FOR THE ESTABLISHMENT OF STANDARDS OF WATER QUALITY AND FOR
• WASTE i-ATER TREATMENT REQUIREMENTS FOR WATERS OF THE STATE OF IDAHO
LEGAL AUTHORITY
The Idaho State Board of Health, pursuant to the authority granted in Title
39, Chapter 1, Idaho Code, sections 39-105 and 39-112, did adopt the following
Rules and Regulations for the Establishment of Standards of Water Quality and
for Waste Water Treatment Requirements for Waters of the State of Idaho while
in regular quarterly session on August 15, 1968, at Coeur d'Alene, Idaho, and
did determine the effective date to be September 4, 1968.
PREAMBLE
It shall be the policy of the State Board of Health to provide for an orderly
and economically feasible comprehensive water pollution control program, which
program shall be administered to conserve the waters of the State for all legiti-
mate beneficial uses, including uses for domestic purposes, agriculture, industry,
recreation, and fish and wildlife propagation.
The Board recognizes that the control of water pollution involves many
factors, including multiple water uses, economic considerations and overall bene-
fits to the citizens of the State. It shall be the policy of the Board to carry
out such a program on a cooperative voluntary and educational basis insofar as
such a policy is compatible v.'ith statutory duties of the Board.
The Departcent of Health shall, on the basis of necessary technical studies,
determine waste treatment needs throujhout the State and shall establish recommended
time tables for the provision of such treatment facilities as will be necessary to
abate pollution of the waters of the State.
These regulations are intended to be in harmony with existing interstate
stream regulations and as an administrative guide for the continuation and sup-
plementation of the program previously carried out by the Board. The regulations
are general in nature and are intended for use until such time as the staff of the
Departtuint of Health may be able to gather sufficient data to determine more
precise quality standards for such individual streaus as uses may indicate and
until such time as the staff of the Department develops the capability of initiating
a permit system as provided in the Idaho statutes.
For these reasons, paragraph 3A should be considered as the basic working
arrangement of the water pollution control program which provides, in effect,
special consideration for each and every waste source on the basis of special
problems peculiar to that source.
DEFINITIONS
The following definitions shall apply to the interpretation and the enforce-
ment of these regulations:
"Sewage" acans the water-carried hui^an or animal waste from residences,
buildings, industrial establishments or other places together with such ground
-------
B-2
water infiltration and surface water as inay be present. The admixture with sewage
as above defined of industrial wastes or wastes, as defined in the following
paragraphs 2 and 3, shall also be considered "sewage."
"Industrial waste" means any liquid, gaseous, radioactive or solid waste
substance or a combination thereof resulting from any process of industry, manu-
facturing, trade or business, or from the development or recovery of any natural
resources.
"Wastes" means sewage, industrial wastes, and all other liquid, gaseous,
solid, radioactive or other substances which will or rcay cause pollution or tend
to cause pollution of the public waters of the State.
"Pollution" means such contamination or other alteration of the physical,
chemical or biological properties of the public waters of the State, including
change in temperature, taste, color, turbidity or odor of the waters, or such
discharge of any liquid, gaseous, solid, radioactive or other substance into the
waters of the State which either by itself or in connection with any other sub-
stance present, will or. can.reasonably be expected to create a public nuisance or
render such waters haraful, detrimental or injurious to public health, safety, or
welfare, or to domestic, commercial, industrial, agricultural, recreational, or
other legitiu^te uses or to livestock, wildlife, fish or other aquatic life or the
habitat thereof.
"Standard" or "standards" means such measure of quality or purity in relation
to their reasonable and necessary use as rcay be established by the State ficard of
Health.
1. WATER RIGHTS
It shall be the policy of the State Board of Health that the adoption of
water quality standards and regulations and the enforceiaent of such standards
and regulations is not intended to conflict with the apportionment of water
to the State of Idaho, to any of the interstate compacts or court decrees, or
to interfere with the rights of Idaho appropriators in the utilization of
water rights.
2. HIGHEST AND BEST PRACTICABLE TREATMENT AND CONTROL REQUIRED
Notwithstanding the wate-r quality standards contained herein, where a higher
standard can be achieved, the highest and best practicable treatment and/or
control of wastes, activities and flows shall be provided so as to maintain
dissolved oxygen at the highest desirable levels and overall water quality as
good as practicable, and water temperatures, coliform bacteria - concentrations,
dissolved chemical substances, toxic rjaterialc, radioactivity, turbidities,
color, odor and other deleterious factors at the lowest desirable levels.
3. RESTRICTIONS ON TOE DISCHARGE OF SEWAGE AND INDUSTRIAL WASTES AND HUMAN
ACTIVITIES WHICH AFFECT WATER QUALITY IN THE WATERS OF THE STATE
A. No wastes shall be discharged and no activities shall be conducted in
such a way that said wastes or activities either alone or in ccicbinatipn
-------
B-3
vith other wastes or activities will violate or can reasonably be ex-
pected to violate the water quality standards and/or regulations con-
tained herein.
B. It is noted that from time to time certain short-term activities which
are deemed necessary to accommodate essential activities and protect the
public interest may be specially authorized by the Department of Health
under such conditions as the Department of Health cay prescribe even
though such activities may result in a reduction of water quality con-
• ditions below those criteria and classifications established by this
regulation.
4. MAINTENANCE OF STANDARDS OP QUALITY
A. The degree of sewage or waste treatment required to restore and/or
maintain the standards of quality and/or maintain existing quality shall
be determined in each instance by the State Board of Health and shall be
based upon-the following: ......
(1) The uses which are or may likely be made of the receiving stream.
(2) The size and nature of flow of the receiving stream.
(3) The quantity and quality of the sewage or wastes to be treated.
(4) The presence or absence of other sources of pollution on the same
watershed.
B. For purposes of enforcement of these standards and regulations, sampling
will be done at a point where these standards and/or regulations can be
evaluated, except for areas immediately adjacent to outfalls. Cognizance
will be given to the opportunity for admixture of waste effluents with
receiving waters, where such admixing is planned and-carried out in a
manner that will provide minimum degradation to receiving waters.
5. GENERAL WATER QUALITY STANDARDS FOR WATERS OF THE STATE
The following general water quality standards will apply to waters of the
State, both surface and underground, in addition to the water quality stand-
ards set forth on specifically identified waters. Waters of the State shall
not contain:
A. Toxic chemicals of other than natural origin in concentrations found to
•be of public health significance or to adversely affect the use indicated.
(Guides such as the Water Quality Criteria, published by the State of
California Water Quality Control Board (Second Edition, 1963) will be
used in evaluating the tolerances of the various toxic chemicals for
the use indicated.)
B. Deleterious substances of other than natural origin in concentrations
that cause tainting of edible species or tastes and odors to be imparted
to drinking water supplies.
-------
B-4
C. Radioactive materials or radioactivity in water which exceed (1) l/30th
of the MPC values given in Column 2, Table I, Appendix A, Part C, Rules
and Regulations for the Control o_f Radiation in the State of Idaho,
(2) exceeds concentration limits of the Idaho Drinking; Water Standards
for waters used for, or likely to be used for, domestic supplies,
(3) results in accumulations of radioactivity in edible plants and
animals that present a hazard to consumers, and/or (4) is harmful to
aquatic life.
D. Floating or submerged matter not attributable to natural causes.
E. Excess nutrients of other than natural origin that cause visible slime
growths or other nuisance aquatic growths.
F. Visible concentrations of oil, sludge deposits, scum, foam or other
wastes that may adversely affect the use indicated.
G. Objectionable turbidity which can be traced to a point source or sources.
ON THE BASIS OF THE PRECEDING GENERAL WATEil QUALITY STANDARDS, THE FOLLOWING
NUMERICAL STANDARDS, WHERE APPLICABLE,' SHALL BE APPLIED, EXCEPT WHERE DIFFERENCES
OCCUR BETWEEN NUMERICAL STANDARDS CONTAINED HEREIN AND THOSE PREVIOUSLY ADOPTED
FOR SPECIFICALLY IDENTIFIED INTERSTATE STREAMS. IN SUCH CASES, STANDARDS FOR
INTERSTATE STREAMS SHALL APPLY.
6. NO WASTES SHALL BE DISCHARGED AND NO ACTIVITIES SHALL BE CONDUCTED WHICH
EITHER ALONE OR IN COMBINATION WITH OTHER WASTES OR ACTIVITIES WILL CAUSE IN
THESE WATERS:
A. Organisms of the Colifona Group where Associated with Fecal Sources
(MPN, equivalent MF or appropriate test using a representative nunber of
samples.) Average concentrations of coliform bacteria to exceed 1,000
per 100 nilliliters, with 20 percent of samples not to exceed 2,400 per
100 nilliliters.
B. Dissolved Oxygen (DO)
DO to be less than 75 percent of saturation at seasonal low or less than
100 percent saturation in spawning areas during spawning, hatching, and
fry stages of salmonid fishes.
C. . Hydrogen Ion Concentration (pH)
pH values to be outside the range of 6.5 and 9.0. Induced variation not
to be more than 0.5 pH unit.
D. Temperature
Any measurable increases when stream, temperatures are 68° F. or above,
or more than 2 F. increase when strcau temperatures are 66° F. or less.
-------
B-5
E. Turbidity
Turbidity, other than of natural origin, to exceed 10 Jackson Turbidity
Units (JTU) . (This turbidity requirement shall not be deemed to rigidly
apply to streams, drain ditches, etc., receiving irrigation return flow.
However, every reasonable effort should be made to prevent excessive
turbidity from such wastes.)
IN ADDITION TO THE GENERAL STANDARDS CONTAINED HEREIN, THE FOLLOWING NUKESICAL
STANDARDS SHALL APPLY TO THOSE WATERS OF THE STATE WHICH ARE PRESENTLY yPSTRFAM
FROM EXISTING SIGNIFICANT WASTE SOURCES AND TO ALL LAKES AND RESERVOIRS "USED
PRIMARILY FOR RECREATION, DRINKING HATER SUPPLIES, FISH AND WILDLIFE PROPOGATION
AND/OR AESTHETIC PURPOSES.
7. NO WASTES SHALL BE DISCHARGED AND NO ACTIVITY SHALL BE CONDUCTED WHICH ALONE
OR IN COMBINATION WITH OTHER WASTES WILL CAUSE IN THESE WATERS:
A. Organisms of the Coliforia Group
Average concentration of coliform bacteria to exceed 240 per 100 milli-
liters with 20 percent of the samples not to exceed 1,000 per 100
milliliters and fecal coliform not to exceed 50 per 100 milliliters with
20 percent of the samples not to e::ceed 200 per 100 milliliters.
B. Dissolved Oxygen (DO)
DO to be less than 75 percent of saturation at seasonal low or less than
100 percent saturation in spawning areas during spawning, hatching, and
fry stages of salmonid fishes.
C. Hydrogen Ion Concentration (pH)
pH values to be outside the range of 6.5 to 9.0. Induced variation not
to be more than 0.5 pH unit.
D. Tempera ture
Any measurable increase when stream temperatures are 36° F. or above, or
more than 2° F. Increase when stream temperatures are 64° F. or less.
E. Turbidity
Turbidity, other than of natural origin, to exceed 5 Jackson Turbidity .
Units (JTU) .
F. Phosphorus or Nitrogen Compounds
Measurable concentration of phosphorus or nitrogen compounds above those
of natural origin.
8. REGULATIONS GOVERNING WASTE DISCHARGES
A. Any person or persons, corporation, officers of any municipality, sewer
district or association which owns or operates any facility or carries
-------
B-6
ouC any operation which results in the discharge of waste water shall
furnish to the Department of Health such information concerning quality
and quantity of discharged waste waters and maintain such treatment
records as the Department may reasonably require to evaluate the effects
on any receiving waters.
B. For the purposes of these regulations, minimum adequate treatment for
domestic sewage or industrial wastes containing significant organic
- material shall be equal to that tfhich is commonly known as secondary
treatment or the equivalent of 55 percent renoval of the biochemical
oxygen demand including adequate disinfection of any wastes which may
contain organisms that may produce disease in can or animals. In
industrial processes, in-plant process controls or alterations, carried
out for the prieary purpose of waste reduction, shall be considered as
.a part of the treatment process. Exceptions to secondary treatment re- •
quireuents may be cade by the Department of Health when it can be
demonstrated that such exceptions will not adversely affect classified
water quality and will offer adequate protection for all beneficial uses.
Failure to provide-.adequate treatment shall be considered a violation
of these regulations.
C. Any person, persons, corporation or officials of a municipality or sewer
district who owns or operates any seuaje or other water-borne waste
treatment facility shall at all tiues operate such facility under
reasonably competent supervision and with the highest efficiency that
can reasonably bs expected and *h«]l maintain such facility in good
repair.
D. In cases of subsurface sewage or waste disposal, such disposal facilities
shall be so located that such sources of pollution including bacterio-
logical, organic or inorganic nutrient pollution v;ill not or will not be
likely to enter adjacent waters. In no case shall any portion of such
disposal systeu be located closer than 50 feet horizontally from the
edge of any v;ater course, including lakes or reservoirs, as deternined
from the known highest water level of such water course, lake or reser-
voir. Improperly or inadequately treated sewage shall not be allowed
to accumulate on the ground surface in such a manner that it cay create
a health hazard.
E. It shall be a violation of these regulations to store, dispose of, or
ellovi to accumulate any deleterious material adjacent to or in the
immediate vicinity of any portions of the waters of the State in such
a manner that such caterial will or is li'.;ely to enter the stream at
times of hif,h water or runoff or uhere drainage from such uatarials or
accidental failure of storage facilities cay transport or allow dele-
terious material into the water course. Such materials shall include,
but not be limited to, trash, rubbish, garbage, oil, gasoline, chemicals,
sawdust and accumulations of uanure.
F. In case of accidental spills of deleterious materials, persons in
responsible charge shall make every reasonable effort to contain spilled
material in such a tranner that it will not contaminate or pollute any
waters of the State, and shall immediately notify the Department of
Health of any such spills.
-------
B-7
G. Sewage sludge or solid material which may contain disease-producing
organisms, when applied to lawns, root crop fields or fields producing
foods which may be consumed raw, or otherwise used in such a manner
Chat exposure to persons may be a health hazard, shall be heated to
135° F. or higher for a period of one hour or any equivalent combination
of time and temperature approved by the Department of Health before such
use.
B. 'Waste discharges to underground waters shall receive, prior to discharge
of such wastes, such treatment as is necessary to render them equal in
quality to existing underground waters or such treatment as is necessary
to bring such discharge into conformance with the Idaho Drinking Water
Standards. The provisions of Paragraph 8H will not be considered as
strictly applicable to the existing sink wells used exclusively for
Irrigation waste water disposal where -such disposal does not adversely
affect domestic water sources. However, it should be recognized that
the long-term preservation of Idaho's vast underground water resources
is of great importance and that every reasonable effort should be made
to reduce pollution from this source and that a long-term research and
development program should be established that will lead to the total
elimination of disposal wells that directly affect underground aquifers
that are not subject to adequate filtration and percolation to eliminate
significant pollution.
Further, this paragraph shall not be construed to preclude the use of
deep disposal wells which may be constructed to discharge into under-
ground water strata whose quality is such that it is not likely to be
used for other beneficial purposes, provided necessary precautions
are taken to prevent contamination of usable aquifers.
I. Sewage Treatment Design Standards and Subsurface Sewage Disposal
Standards, as adopted by the Idaho Department of Health, shall be re-
vised from tine to time and shall be used as a guide in the review of
plans and specifications for waste treatment facilities as required
by Section 39-112, Idaho Code.
Regulations relating to Water Pollution Control adopted by the Idaho State
Board of Health May 11, 1959, are hereby rescinded.
These Regulations shall be in full force and effect on and after September 4,
1968.
Section 39-112, Par. E —All plans and specifications for the construction
of new sewage systems, sewage treatment or disposal plants or systems, or other
waste treatment, or disposal facilities, or for improvement or extensions to
existing sewerage systems or sewage treatment or disposal plants, shall be sub-
mitted to and be approved by the board, before construction thereof .may begin.
-------
APPENDIX C
STUDY METHODS
-------
C-l
STUDY METHODS
WASTE SOURCE EVALUATIONS
One municipal and six industrial waste sources were investigated.
Information was obtained on water pollution control practices at each
plant through in-plant surveys, review of Refuse Act Permit applications
and plant officials.
Influent samples of the Twin Falls Wastewater Treatment Plant were
collected upstream of the point of supernatant return. Effluent samples
were collected upstream of chlorination. All samples were collected with
automatic samplers (SERCO) and flow composited according to instantaneous
flow readings obtained near the point of collection.
Effluent samples from Amalgamated Sugar Company, Independent Meat
Company and Idaho Frozen Foods were collected with automatic samplers
and time composited. Water samples were collected manually from effluents
of Ready to Pour Concrete; Colonial Concrete, Incorporated; and Frame
Trout Farm.
Samples for chemical analyses were collected in clean, unused con-
tainers; those for bacteriological analyses were collected in sterile
glass containers. The dissolved oxygen samples were collected in 300 ml
bottles using a Sargent sampler.
Field measurements of pH, temperature, conductivity and chlorine
residual (Twin Falls Wastewater Treatment Plant effluent only) were made
periodically. Samples were delivered to the NFIC-D temporary laboratory
-------
C-2
(Twin Falls, Idaho) and analyzed for selected parameters (e.g., BOD
alkalinity, DO, and settleable solids). Appropriate aliquots were pre-
served and shipped to the NFIC Laboratory, Denver, Colorado, and analyzed
for TOG, COD, heavy metals, oil and grease, and suspended solids.
Grab samples of the municipal and industrial effluents were analyzed
for total coliform, fecal coliform and fecal streptococcus by Region X
(EPA) Mobile Laboratory in Twin Falls, Idaho.
Bacteriological analyses for total and fecal coliform and for strep-
*
tococcus were performed according to the accepted, standard method, using
the membrane filter technique.
The BOD and DO tests were determined, according to the accepted
*
standard procedure, using the azide modification of the Winkler Method.
All other laboratory analyses and field measurements used were
** ,
conducted in accordance with accepted standard techniques.
STREAM SURVEYS
The stream surveys were conducted from November 12 to 16, 1971.
Eleven stations [Table 4] were sampled. Sampling for chemical and
bacteriological analyses was carried out for five days. The time of
sampling at each station was varied to obtain the maximum time spread.
Sampling and analytical procedures were the same as described in
the previous section. Stream flow measurements were made at selected
stations.
* Standard Methods for the ExanrLna.ti.an of Water and Wasteioater, 13th
Edition, Americal Public Health Association, New York, NY, 1971.
** Methods for Chemical Analyses of Water and Wastes^ Environmental
Protection Agency, National Environmental Research Center, Analy-
tical Quality Control Laboratory, Cincinnati, Ohio, 1971.
-------
APPENDIX D
EFFLUENT GUIDELINES
FOR
INDUSTRIAL WASTEWATER DISCHARGES
-------
EFFLUENT GUIDELINES
FOR
INDUSTRIAL WASTEWATER DISCHARGES
The proposed guidelines for those industries evaluated are sum-
marized below.
Amalgamated Sugar Company, Box 127, Twin Falls, Idaho 83301
1. The BOD. discharges shall not exceed 0.5 Ib/ton of beets sliced.
2. Suspended solids discharge shall not exceed 0.5 Ib/ton of beets
sliced.
3. The pH shall be between 6.0 and 8.5.
4. No toxic or hazardous naterial, as designated under the provisions
of Section 307 of the Federal Water Pollution Control Act as amended, or
known to be hazardous to toxic by the permittee, shall be discharged
except with the approval of the Administrator (EPA) or his designee.
5. The number of total coliform bacteria not exceed 1,000 per 100 ml
in the effluent.
6. No discharge which may cause toxic or hazardous conditions or
accelerate eutrophication in the receiving water, shall be discharged
except with the approval of the Administrator (EPA) or his designee.
Colonial Concrete, Incorporated. P.O. Box 1151, Twin Fal Is, Idaho 83301
1. The effluent discharged to Rock'Creek shall not contain more than
20 mg/1 each of suspended solids, and COD.
2. Maximum recycling of water is recommended.
-------
Idaho Frozen Foods, Incorporated, P.O. Box FF, Twin Falls, Idaho 83301
1. The BOD discharged shall not exceed 1.0 Ib/ton of potatoes
processed.
2. The total suspended solids discharged shall not exceed 1.4 Ib/ton
of potatoes processed.
3. The oil and grease discharged shall not exceed 10 rag/1 or
125 Ib/day, whichever is less.
4. The pH shall be between 6.0 and 8.5.
5. The number of total coliform bacteria shall not exceed
1,000/100 ml in the effluent.
Independent Meat Company, Box EE, Twin Fall, Idaho 83301
1. The BOD shall not exceed 0.26 lb/1,000 Ib of LWK.
2. The total suspended solids discharged shall not exceed
0.35 lb/1,000 Ib of LWK.
3. The grease discharged shall not exceed 10 mg/1.
4. The number of total coliform bacteria shall not exceed
1,000/100 ml in the effluent.
5. The ammonia discharge shall not exceed 0.024 lb/1,000 Ib of LWK.
6. The pH shall be between 6.0 and 8.5.
Ready to Pour_Concrete, P.O. Box 274, Twin Falls, Idaho 83301
1. The effluent discharged to Rock Creek shall not contain more than
20 mg/1 each of suspended solids, and COD.
2. Maximum recycling of water is recommended.
-------
Trout Farm and Hatcheries
Provisions shall be made for removal and disposal of solid materials
dislodged during the cleaning of raceways, to insure that these materials
do not enter the receiving waters.
-------
APPENDIX E
STATUS REPORT ON
SECONDARY SEWAGE TREATMENT
-------
Additional Information
071 OYC 2 000029
STATUS REPORT
on
SECONDARY SEWAGE TREATMENT
* * *
The City of Twin Falls has completed and submitted to the State of
Idaho Department of Health a Preliminary Reconnaissance Report
on Secondary Sewage Treatment.
Detailed tetio have been run to determine the loads and are nearing
completion. Our consultant engineer. Cornell. Hov/land, Hayes &
Merryfield, has indicated that the final engineering report will be
.completed by August 1, 1971.
We have submitted an Application for Funds to the State of Idaho
Department of Health. We still intend to meet the time table estab-
lished by the Idaho Department of Health.
t - .
Industrieo that will be included in the Twin Falls system to date are
as follows:
1. Young's Dairy
2. Swift & Company
3. Idaho Frozen Foods
4. Bertie's Poultry
5. Independent Meat .
6. Kellwood Company
"^g^ ^-lZ*?-*>~-"V ^^s-^- -
-------
/ Perrine Memorial Bridge
Perrine Coulee Falls
PoleHYne Road
TWIN FALLS
Addison St.
Hiway 30/93
South/Park Ave
3700 North Road
3400 North Road
-N-
LEGEND MAP KEY
• RIVER STATIONS SEE TABLE 4
• MUNICIPAL EFFLUENT SEE TABLE 1
A INDUSTRIAL EFFLUENTS SEE TABLE 1
SCALE IN MILES
Figure 2 Sampling Locations-Snake River, Twin Falls, Idaho. (November 1971)
------- |