ML20137H381
| ML20137H381 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 09/30/1985 |
| From: | Braetzman G COLORADO, STATE OF |
| To: | |
| Shared Package | |
| ML20137H365 | List: |
| References | |
| CO-0001121-A-01, CO-1121-A-1, NUDOCS 8601210507 | |
| Download: ML20137H381 (45) | |
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\ w Permit No.: CO-0001121 i
- County: Weld AUTHORIZATION TO DISCHARGE UNDER THE COLORADO DISCHARGE PERMIT SYSTEM In compliance with the provisions of the Federal Water Pollution Control ?
Act, as amended (33 U.S.C.1251 et. seq. ; the "Act") and the Colorado Water ,-{ Quality control Act, (25-8-101 et. seq., CRS,1973 as amended) PUBLIC SERVICE COMPANY OF COLORADO , is authorized to discharge from their Fort St. Vrain generating station locatedinSections34and35, Township 4 North, Range 67WestandSection3,h Township 3 North, Range 67 West, 6th Principal Meridian to the South Platte River and St. Vrcin Creek ; , in accordance vn h effluent limitations, nonitoring requirements and other 4(. conditions set forth in Part I, II and III hereof. [r . This percit shall become effective thirty (30) deys after the date signed; by the Director. Should the applicant choose to contest any of the effluent ; limitations, nonitoring requirements or other conditions conttined herein, he";; cust co= ply with Section 24-4-104 CP.S 1973 and the Regulations for the State - Discharge Permit System. Teilure to contest any such effluent limitations. T conitoring requirenent, or other condition is consent to the condition by the , Applicant. This percit and the authorization to discharge shall erpire at cidnight, Y4 7 Dececber 31, 1989 Issued this9l day of .sd .b . . .
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Part 1 [,T . - - Page 2 of 19 Permit No.: CO-0001121 45s - A. EFFLUEhT LIMITATIONS AND MONITORINC REQUIRDIENTS - SEE AhT ADDITIONAL REQUIRDfEhTS UNDER PART III.
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- 1. EFFLUEhT LIMITATIONS - ALL DISCHARGE POINTS
.. qs-(a) There sisall be no discharge of polychlorinated biphenyl compounds auch as those commonly used for transformer fluid.
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(b) Neither_ f ree available chlorine nor total residual chlorine may be discharged from any unit for more than two hours in any one . 4 day and not more than one unit in any plant may discharge free' i available or total residual chlorine at any one time unless the utility can demonstrate to the State that the units in a particular location cannot operate at or below this level of . I chlorination. . 2 .' ' .. . (c) As a best management practice, the combined flow rate of water from the main cooling tower, sertice cooling tower and flow - directly ,from the NRC storage ponds in the North Yard Drain shall be managed so as to minimize the exceedance of the 1100 gpm base flow required by h1C. - 9 Amended 9/30/85
PART I Page 3 of 19 Permit No. CO-0001121 A. EFFLUENT I. IMITATIONS AND HONITORINO REQUIREMENTS - SEE ANY ADDITIONAL REQUIREMENTS UNDIX PART III.
- 2. Effluent Limitations - Discharge Point 001 to the South Platte River During the period beginning immediately and lasting through December 31, 1989 the permittee is authorized to discharge from outfall(s) serial number (s) 001, subject to the following effluent limitations and conditions:
Effluent Parameter Discharge Limitations Maximum Weight Maximum Concentration kg/ day (Ibs/ day) mg/l ag/l 30-day avg. a/ Daily mar. 30-day avs. a/ Daily Mar. c/ Flow N/A N/A N/A N/A R;aidual Chlorine
- N/A N/A N/A 0.014 Tctal Eine N/A N/A 0.66 1.0 Tetal Copper N/A N/A 0.118 0.24 Tot:1 1ron N/A N/A 1.0 1.0 Total Chromium N/A N/A 0.2 0.2 Tatal Suspended Solid, net ** N/A N/A 30 100 126 Priority.
Pollutants, except total chromium and total rinc - NO DETECTABLE AMOUNT AS A RESULT OF CHEMICAL ADDITION FOR C00 LINO TO'w?R MAINTD ANCE-The te=perature of the discharge shall not exceed 300C (86er) at anytime. Oil and grease shall not exceed 10 mg/l and there shall be no visible sheen. If a visible sheen is obse ved, corrective action shall be taken immediately. The pH shall not be less than 6.5 standard units nor greater than 9.0 standard units e,/ a/ This limitation shall be determined by the arithmetic mean of a minimum of three
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(3) samples taken on separate weeks in a 30-day period (minimum totti of three (3) samples); j b/ This limitation shall be determined by the arithmetic mean of a minimum of three (3) saeples taken on separate deys in a 7-dey period (cicimum totti of three (3) samples); c_/ This licitation shall be determined by a single properly preserved saeple as required under monitoring requirements - Sacple Type.
. 052o elso, PART I A.1. (b) above.
cMSS shall be monitored at two different locations so that net limitations may be applied: (1) raw water supply efter the settling ponds but prior to the holding ponds shown in Figure 2. (2) et monitoring point 001B or 002, depending on dineherte point. Both of these values and the resultant net TSS value sht11 be reported on the Discharge Monitoring Report Form. Amended 9/30/85
( 9 PART I o Page 4 of 19 Perit No. CO-0001121 A. EFFLUEhT LIMITATIONS AND MONITOR 1)C REQUIREMEhTS - SEE AhT ADDITIONAL REQUIREMEhTS UNDER PART 111.
- 3. Effluent Limitations - Discharge Point 002 to St. Vrain Creek During the period beginning immediately and lasting through December 31, 1989 the pericittee is authorized to discharge from outfall(s) serial number (s) 002, subject to the following effluent limitations and conditions:
Effluent Parameter Discharge Limitations Maximum Weight Maximus Concentration kg/ day (1bs/ day) og/l ag/l 30-day avg. a/ Daily max. 30-day avg. al Daily max. c/ Flow N/A N/A N/A N/A - Residual Chlorine
- N/A N/A -
N/A 0.022 Total Zine N/A N/A 0.75 1.0 Total Copper N/A N/A 0.112 0.224 Total Iron N/A N/A 1.0 1.0 Total Chromius N/A N/A 0.2 0.2 Total Suspended, net N/A N/A 30 100 . 126 Priority Pollutants, except total chrocium and total zine - NO DETECTABLE AMOUhT AS A RESULT OF CHEMICAL ADDITION FOR COOLING TOUR PAINTENANCE-The te=perature of the discharge shall not exceed 300C (660T) at anytime. Oil and grease shall not exceed 10 mg/.1 and there shall be no visible sheen. If a vicible sheen is observed, corrective action she.11 be taken immediately. l The pH shall not be less than 6.5 standard units nor greaer than 9.0 standard units ej
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a/ This licitation sht.11 be detereined by the arithmetic mean of a e.inimum of three (3) samples taken on separate weeks in a 30-day period (minicum totsi of three (3) samples):
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b/ This liettation shall be determined by the arithmatic maan of a minimum of three (3) samples taken on separate days in a 7-day period (minimum total of three (3) saeples): c/ This liettation shall be detereined by a cingle properly preserved sample as required under monitoring requirements - Sample Type. cSn t.lso PAP.T 1.A 1 (b) above. ceTSS shall be monitored at two different lo:stions so that net licitations cay be applied (1) raw water supply af ter the settling ponds but prior to the holding ponds r.hown in Figure 2. (2) at monitoring point 0015 or 002, depending on discharge point. Both of these values and the resultant net TSS value shall be reported on the Din:harge Monitoring Report Form. i Amended 9/30/85
- . - J de ( '
' ' (~ W PART I
- O
[ Paga 5 cf 19 Permit No. CO-0001121 A2 EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Continued)
'I*
- 4. Monitoring Requirements - 001_and 002
'i" In order to obtain an indication of the probable compliance or noneoepliance with the effluent limitations specified in Part 1, the permittee shall s.onitor all y ef fluent parameters at thefoldovingrequiredfrequenefes. -
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Ef fluent Parareter ,,* Measurement Freoucneydjef SampleTypeil I
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Flow, ugd -.k d Weekly Instantaneou . ,L Residual Chlorine, og/l id[b-Veekly at 001A , or Continuou .' Crab
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N [X. Zinc eg/l }3
; and 002 Monthly'. ,
Crab
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9 . Am=onia nitrogen, ag/l . ,,9 Monthly Crab g-Total Suspended Solids, net,sugl1 Veckly Crab "gl g Phosphorus 4.g Monthly , Crab or 3 y Composite , g g
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011 and grease, eg/l .f, Veekly . Crab .. i y fi Temperature
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r/, Weekly at 001A,t. and 002 E. Crab ' f l h Total Copper 7d . Crab j lf. tg Monthly ,.. g ; 4' Total Iron 4: Monthly Crab d4 Crab .c Total Chroetum - -' t . 126 Priority Pollutants,' e M. Monthly dj, D,::'.- j Cr and gine h, AnnuallyIt')
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Crab 7 d D, pH '1.I,i
, Veckly Grab i;; i
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Monitoring is required only du' ring periods of discharge. If "no discharge" occurs, this shall be reported l'at the specified frequency. (See Part 3.) $
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?.i n/ When the ceasurement frequency indf eated is quarterly, the saeples shall b.e '-
collected during March, June, September and December, if a continual disciiarge if occurs. If the discharge is intereittant, then saeples shall be collected during the period that discharge occurs. ??
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'h t f / See definitions. Part B- ws: *r 'v5 2 .0 "i ~*/. *it' *
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y ', (1) As an alternative to analyzing for the 126 toxic pollutants on a yearly basis t6,e pereittee may submit the followingt ? .
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- 1. A !!st of the certified anaiytical contents of all biofouling and maintenance formulations used (manuf acutrer's certification as to contents and prf~ority pollutant status); and . I, .
- 2. Engineering calculations demonstrating that any of the priority pollutants ,'
present in the maintenence chemicals would not be detectable in the cooling tower discharge using appropriate analyt teal methods. (These calculations must be based on the cooling tower discharge only and should not include dilution by any other effluent streams.) ~
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If cheefeal usage, both type and quantity, has not changed during the year this will be sufficient to demonstrate enepliance with the limitation. Amended 9/3 /85 0 89 ,g ____ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _s i
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PART I
' Page 6 of 19 Permit No.: C0-0001121
-A.- EFFLUniT LIMITATIONS AND MONITORING Rgqu1RgMDITS (Costinued) ;
4
- 4. Monitoring Requirements - 001 and 002 ;
) Self-moeitoring samples takam la compliance with the monitoring requirements specified above shall be taken at the following location (s): 1 Monitoring Point 001A - at the parshall fiume at the outfall from the fars : poed for temperature and residual chlorine: and Monitoring Point 0013 - parshall fiume at the Coosequill Ditch for all other parameters when - discharge is via the 001 discharge point. \ l Discharge Point 002, at the parshall fiume in the drainage alough prior to I estering St. Vrain Creek. All dischatse and monitoring points are as . l
! shown on Figures 1 and,3 of..this, permit..: 755. levels must be monitored la
} plant for application of net limitation. .See.** on previous two pages of this permit. j! t
- 5. Effluent Limitations - Discharge Points 003, 004 and 005 !
During the period beginning immediately and lasting through June 30, 1933 i the permittee is authorized to discharge from outf all(s) serial number (s) j 003, 004 and 005, subject'*to the following affluent limitations and
- l conditions: ;
l , 003 - Wie discharge shall consist of South Platte Rivec water and shall . i contain no heat or other chemicals or material other than that ! i removed from the intake screens. , 3 004 - This discharge shall consist of St. Vrain Creek water and shall i contain no heat or other chemicals or noterials other than that l; removed from the intake screens. ; 1 l 005 - This discharge shall consist of sluiced water free the St. Vrais l } Creek intake and shall contain no heat or other ehemicals or , i materials other than that removed from the intake. l { No monitoring of flow nr other parameters will be required at these points. -l
- 6. speefal Monitorfna 1
l Se permittee shall monitor for Tss, D0D and fecal coliform at the sewage !
! treatment plant outfall and for TSS, oil and grease and pH prior to mixing I with other flow for the turbine' building drain. Monitoring shall be on a ;
monthly basis and D0D shall be a composite sample while the other .f' parameters shall be grab samples. No numeric limits shall apply at these
; points. The monitoring is to serve'as an indicator of facility. l 1 performance. If reported analynes show inadequate treatment, the Division l l may modify the permit to impose numeric limitations for these parameters. ,
i E l l Amended 9/30/85 i ) i
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ti l PART I , Page 7 of 19 i Permit No.: Co-0001121 , B. MONITORING AND REPORTING
- 1. Representative Sampling Samples and usasurements taken as required herein shall be representative of the volume and nature of the asaltered discharge. i
- 2. Reporting Moaltoring results shall be summarised for each month and reported on applicable discharge assitoring report forms (EPA Pers 3320-1),
postmarked ne later than the 28th day of the following month. If no ! discharge occurs during the reporting period, "No Discharge" s, hall f he reported. Duplicate signed copies of these, and all other i' reports required herein, shall be submitted to the Regional Administrator and the State at the following addresses: Colorado Department of Mealth U. 5. Environmental Protection Agency L'ater Quality Control Division 1860 Lincola Street - Suite 103 1 4210 East lith Avenue Denver, Colorade 80295 Denver, Celerade 40220 Attest.f en - Enferseesat - Permit ! Attenties: Permite 4 Program Enforcement Secties, WQCD
- 3. Definitions
- a. A " composite" sample, for mesitoring requirements, is defined as a minimum of four (4) grab samples cellected at equally spaced two (2) beur intervals and propertioned according to .
flow.
- b. A " grab" sample, for moeiterlag requirements, is defined as a single " dip and take" sample collected at a representative '
point la the discharge strees.
- c. Aa "lastastaaseus" measurement, for assitoring requireenste, is defined as a slagle reading, ebeervaties, or measureeest uslag esisting moeitering facilities.
- d. A " continuous" measurement, for flev sentteries requirements, is defined as using as automatic recording device to continually measure flev.
- e. 'A " visual
- observation, for oil and grease monitoring requirements, is defined as observing the discharge to cheek for the presence of a visible sheen or floating oil. If either of these is present,'a grab spaple shall be taken and analysed, and corrective esasures taken immediately to correct the situation.
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i PART I I Page 3 of 19 Pereit No.* CO-0001121
- 5. MOIIITORING AND REPORTING (Continued) 4 Test Procedures Test procedures for the analysis of pollutants shall confore to regulations published pursuant to Section 304 (h) of the Act, and Colorade State Etfluent 1, imitations (10.1.5), under which such precedures may be required.
- 5. Recording of Raoults .
For each measurement or sample taken pursuant to the requirements of this permit, the permittee shall record the following infor6ation ,
- a. h easet place, date, and time of sampling;
- b. h dates the analyses were performed;
- c. N person (s) who performed the sampling;
- d. The person (s) who perfessed the analys4s;
- e. N analytical techniques or motheda used; and
- f. N results of all required analysis.
- 6. Calculations for all limitations which require averaging of measurements shall utilise an arithmetic mean unless otherwise specified.
- 7. Additional Monitoring by Permittee if the permittee monitors any pollutant at the location (s) designated herein more frequently than required by this permit, using approved analytical methods as specified above, the results of such semitering shall be faciudad in the calculaties and reporttag of the values required la the Disaharge Monitoring Report Form (EPA No. 3*.20-1), er other forms as required by the Divieles. Such increased frequessy shall aloe be~
indicated.
- 8. Records Retention a
All records and information resulting from the meaitering activities required by this permit lacluding all records of analyses perforud and calibration and maintenance of instrumentation and recordings from continueve monitoring instrumentation shell be retained for a minimum of three (3) years, or longer if requested by the Regional Adelaistrator er the State Water Quality Control Divisies. , 9
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PART I Page 9 of 19 Permit No.: C0-0001121 C. SPILL PREVENTION AND CONTAIlsIENT FLAN The permittee shall,- within sixty (60) days af ter the effective date of this
- . permit, submit to the State Water Quality Control Division.-a spill prevention ,
j and containment plan, prepared by a professional engineer registered in the I l State of Colorade. Plans shall include information and precedures for the , j preseation and containment of spills of materials used, processed, or stored, ! at the facility which could possibly be spilled and might have a visible or , j otherwise detectable impact en the waters of the State. The plan should 1 . include but not necessarily be limited to the following: . A history of spills which have occurred la the three (3) preceding the i 1.
- effective date of this permit.' The history shall include causation of the j spills and a discussion of preventive sessures designed to preveat'thee ,
- from reoccurring i 2. A description of the reporting system which will be used to alert ,
l responsible facility assagement, the State Water Quality Control Diviales, ' l the Envireemental Protection Agency, downstream water users, and local' ! j health officials [ 2 l 3. A descripties of preventative facilities (including overall faellity plet) i which prevent, contain, or treat, spills and unplassed disaharges; ! 4 A list of all asterials used, processed, or stored, at the facility which . represent a potential spill threat to surface waters; [ l 3. An implementation schedule for additional facilities which might be ! required in (3) above, but which are not yet operational ;
- 6. A list of available outside contractors, agencies, er other bodies which i could be utilised la the event of a spill in order to elesa up its effects; ;
i 7. prevision for perledic review and updattag of the' contingency plan. l i : } The foreseing previsions shall is no way reader taspplicable these requirements i
- imposed by Section 311 of the Federal Water polluties Centrol Ast Amendments of
i 1972, regulations presulgated thereveder, the Colorade unter quality Centrol ! l Act, and regulattene promulgated thereunder. i j- 18ething herein contained shall be construed as allowing any discharge to waters , i
- of the State other than through the discharge pelats specifically authertsed in !
{ this permit. Nothing hereia contained shall be construed as waivtag any 1 liability the permittee might have, civil or criminal, for any spill. I 1 l If this facility has an approved spill prevention and containment plan new in effect, please submit a copy of this plan with an update, if necessary. I i
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- , .A page 10 of 19 pIRMIT NO
- CO-0001121 PART 11 A. MANAGEMENT REQUIREMENTS
- 1. Cheese in Discharge All discharges authorised herein shall be coasistent with the. terms and conditions of this permit. . The discharge of any pollutant identified la this permit more frequently than or at a level in excess of that authorised shall constitute a violation of the permit. Amy anticipated change in discharge locaties, facility esponsions, productica increases, or process modifications which will result la new, differest, or increased discharges or yellutants must be reported by submission of a new EpDES application er, if such changes will not violate the effluent limitations specified in this permit, by notice to the State Water Quality Control Divistoa of such changes. process modifications include, but are not limited te, the introduction of any new pollutsat not previously identified in the permit, or any other modifications which may result la a discharge of a quantity et quality different f ree that which was applied for. pellowing such metice, the permit may be modified to specify and limit any pollutante met previously limited.
- 2. Noncespliance (A) Definitions (1) Upset: An esceptional incident la which there is unistentiemal and temporary sensempliasse with techselogy-based permit effluent limitations beesuse of facters beyond the resseeable control of the permittee.
(2) Sypass: The intentional diversion of weste streams free any portion of a treatment facility. (3) Severe property Damage Substantist physical damage to property, to the treatment facilities to cause them to besene inoperable, or substantial and permement less of astural reaeurces which can reaseeably be esposted to escur in the absence of a bypass. It does met asen oceaemic less caused by delays is producties. (3) Notificaties (1) If, for any reseen, the permittee does not semply with er will a be unable to esoply with any ensimum diosharge limitations or standards spesified is this permit, the permittee shall, at a minimum, provide the Water Quality Centrol Division and epa with the following informaties: a) A descripties of the discharge and cause of seacompliance b) The period of mencespliance, including enact dates and times and/or the anticipated time when the discharge will return to comp 11ames; and c) Steps being taken to reduse, eliminate, and prevent resurrence of the noncomplying discharge.
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PART II Fase 11 of 19 PERMIT NO: CD-0001121
- 2. Noncespliance (cont'd)
(2) The following instances of noncompliance shall be reported orally within 24 hours f rom the time the permittee becomes aware of the circumstances, and a written report asiled within five days of the time the permittee becomes aware of the circumstances: a) Any instance of noncompliance which may endanger health or the environment b) Any unanticipated bypass which eaceeds any effluent limitation in the permit c) Any upset which exceeds say effluent limitation in the permit (See Fed. Reg. Vol. 45, No. 98,122.60 (h) for upset conditions) d) Daily maximum violations for any toxic pollutants or hasardous substances limited in FART 1-A of this permit. (3) The permittee shall report all instances of nonceepliance not reported is " Notification", paragraph 2-(B)-(2) (above), at the time discharge eenitoring reports are submitted (EPA Fors 3320-1). The reports shall contain the information listed in "Netification", paragraph 2-(B)-(1) (above). (4) Where the permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or report to the Division, it shall promptly submit such facts or information. (C) Bypass (1) The permittee may allow any bypass to occur which does not cause effluent limitations to be eseeeded, but only if it aise is for essential maintesasse to assure efficient operaties. No Division notification is required, and this case is not subject to the requirements in paragraphs 2-(C)-(2) through 2-(C)-(4), (below). (2) If the permittee knows in advance of the need for a bypass, it shall submit notice, if possible at least ten days before the date of the bypass, to the Division and the Environeestal Protection Agency (EPA). The bypass shall be subject to Division approval, and liettations imposed by the Division and EPA. (3) For an unanticipated bypass, see the requirements listed in
" Notification", paragraph 2-(B)-(2), (abov,e).
(4) Bypass is prohibited,,and the Division may take enforcement action against a permittee for bypass, unleses a) typees was unavoidable to prevent loss of life, personal injury, or severe property damage.
t - t. t FART 11 Fase 12 of 19 PERMIT NO: CO-0001121
- 2. Noacompliance (Continued) b) There were ne feasible alternatives to the bypass, such as the use of auxiliary trestraent facilities, retenties of untreated wastes, er maintenance during asemal periods of equipment downtime. This condities is not satisfied if the permittee could have installed adequate backup equipment te prevent a bypass which escurred during aeraal periods of equiposat downtine er preventative .
maintenance; and c) The permittee submitted metites as required in
- Notification",
paragraph 2-(5) (above).
- 3. Removed Substances Solids, sludges, filter backwash, er. ether pollutants removed in the-course of treatamat er control of wastewaters shall be disposed of in a amener such as to prevent any pollutant free such materials free entering waters of the State.
4 Facilities Operaties The permittee shall at all times antatain la good working order and operate as efficiently as possible all treatment er control facilities er systems lasta11ed er used by the permittee to achieve complianae with the terms and conditions of this permit.
- 5. Adverse Impact he permittee shall take all resseeable steps to alalaise any adverse impact to waters of the State resulting free acacompliance with any offlueet limitations specified in this permit, imeluding such accelerated er additieaal asettering as necessary to determine the asture and impact of the mescomplytes dinharge.
- 6. Amy disaharge to the unters of the State from a point source other than specifically autherised is prohibited.
- 7. Reduction, Laos, er Failure of Treatment Facility (A) The permittee shall, to the estest necessary to asistata a
compliance with its permit, control producties, or all disaharges, or both until the facility is restored or an alternative method of treatment is provided. (B) This provision aise applies to power failures, unless an-alternative power source sufficient te, operate the westewater control facilities is provided. e 4
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PART II T Page 13.of 19 PERMIT NO: CO-0001121
- 3. RESPONSIBILITIES 1., Right to Entry ,
The permittee shall allow the Director of the State Water Quality Control Division, the EPA Regional Administrator, and/or the .rrauthorized representative, upon the presentation of credentials (A) To enter upon the permittee's premises where a regulated facility or activity is located or in which any records are require to be kept under. ' the ceras and conditions of this permit;
, (3) At reasonable times to have access to and copy any records required to be k kept under the terms and conditions of this permit and to. inspect any monitoring equipment or monitoring method required in the permit;' and , ; (C) To enter upon the permittee's premises to reasonably investigate any actual, suspected, or potential source of water pollution, or any violation of the Colorado Water Quality Control Act. The investigation any include, but is not limited to, the following: sampling of any -;
discharge and/or process waters, the taking of photographs, interviewing of any persons having any knowledge related to the discharge, permit, or
- alleged violation, and access to any and all facilities or areas within the permittee's premises that may have any affect on the discharge, permit, or alleged violation.
- 2. Duty to Provide Information The permittee shall furnish to the Division, within a reasonable time, any information which the Division may request to determine whether.cause exists for modifying, revoking and. reissuing, or terminating this permit, or to
! determine compliance with this permit. ,- ,
; 3. Transfer of ownership or Control -;
~ In the event of any change in control or ownersnip of facilities from which the authorised discharges emanate, the permittee sha*1 notify the succeeding .
owner or controller of the existence of this permit by letter, a copy of which shall be forward ed to the Regional. Administrator and the State Water Quality Control Division.- l ,4.AvailabilityofBleports j Except for data determined to be confidential under Section 308 o' the Act and Regulations for the State' Discharge Permit Systes 6.1.8, all rg orts i prepared in accordance with the terms of this permit shall be available for p1blic inspection at the offices of the State Water Quality Control Division and the Regional Administrator. ..
'As required by the Act,. effluent-data-shall not be considered. confidential.
Knowingly making any false statement on any such report may result 'in the
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imposition of criminal penalties as provided for in Section 309 of the, Act, and Section 25-8-610 C.R.S. 1973. we-r- e a e y- - -y * , y y -^1r*t-, g.,.g+- ps--rw,, - - wMgg-y--- eww-+.m.r-we+,*-v +- -*
". . '- rast u 7 Pego 14 of 19 PERMIT NO: CO-0001121 l
- 5. Permit Modification ,
Af ter notice and opportunity for a hearing, the permit may be modified.
- suspended,' or revoked in whole or in part during its term for cause including, but not limited to, the following:
(A) Violation of any terms or conditions of this permit;
-(B) Obtaining this permit by misrepresentation or failure to disclose fully all relevant facts; (C) A change in any condition which results in a temporay or permanent reduction, elimination, addition or increase of the permitted . discharge. (Changes in Water Quality Standards, control regulation or duly promulgated plans would qualify as "a change in any condition."); ,
4 (D) Changes in Water Quality Standards, control regulation or dul,y promulgated plans would qualify as " change in any condition".; [ i (E) This permit shall be modified, or alternatively, revoked and reissued, to comply with any applieble effluent standard or limitation issued or approved under Sections 301 (b)(2)(C), and (D), 304 (b)(2), and 307 (a)(2) of the Clean Water Act, if the effluent t standard or limitation so issued or approved. (1) Contains different conditions or is otherwise more stringent than , any effluent limitation in the permit; or (2) Controls any pollutant not limited in the permit. . . The permit as modified or reissued under this paragraph shall also contain any other requirements of the Act then applicable. - or - (F) Data submitted pursuant to Part I.A. of this permit indicates a potential for violation of instrees water quality standards and/or established classifications and numeric standards.-
- 6. Toxic Pollutants
{ Notwithstanding ~ ~ Permit Modification", paragraph B-5 (above), if a toxic effluent standard or prohibition (including.any schedule of compliance specified 'in such effluent ' standard or prohibition) is established under - Section 307(a) of the Act' for a toxic pollutant which is present in the , discharge and such standard or prohibition is more stringent than any limitation for such. pollutant in this permit, this permit shall be revised or modified in accordance with.the toxic effluent standard or~ prohibition and the permittee so notified. 7.' Civil and Criminal Liability j, Except as provided in permit conditions on " Bypassing". ( A-2-(C)) and l " Reduction,' Loss, or Failure of Treatment Facility", (A-7), nothing'in'this permit shall be construed to relieve the permittee from civil or criminal ' penalties for noncompliance. (See Fed. Reg. ~ Vgl. 45, No. 98,- 122.60).
- 8. Oil and Hazardous Substance Liuability Nothing in this permit shall be construed to preclude the institution of l any legal. action or relieve the permittee- f rom any responsibilities, ,
, liabilities, or penalties to which the permittee is or may be subject ! under Section 311 of the Act.
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n PART II Page 15 of 19 PERMIT NO: CO-0001121
- 9. State Laws i- Nothing in this permit shall be construed to preclude the institution of my legal action or relieve the permittee from any responsibilities, *
. liabilities, or penalties established pursuant to any applicable _ State law or roulation under authority preserved by Section 510 of the Act. .
- 10. Permit Violations Failure to comply with any terms and/or conditions of this permit shall be a violation of this permit.
- 11. Property Rights The issuance of this permit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal ,
rights, nor any infringement of Federal, State or local laws or regulations. , j 12. Severability The provisions of this permit are severable, and if any provisions of this ,
; permit, or the application of any provision of this permit to any j circumstance, is held invalid, the application of such provision to other
- circumstances, and the remainder of this permit shall not be affected j thereby.
- 13. At the request of a permittee, the Division may modify or terminate a permit and issue a new permit if the following conditions are met:
r (A) The Regional Administrator has been notified of the p'roposed 3 modifiestion or termination, and does not object in writing within !' thirty (30) days of receipt of notification; and (B) The Division finds that the permitt'e has e shown Weasonable grounds' consistent with the Federal and State statutes, and-regulations for such modification or termination; and (C) Requirements of'public. notice have been met. +: The filing of a request by the permittee'for a permit modification, i revokation and reissuance, or termination, or a notification of planned i changes or anticipated noncompliance, does not stay any permit condition.
- 14. - It shall not he a defense for a permittee in an enforcement action that it l would be necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this permit.
- 15. Signatory Requirement-A11' applications, reports, or information submitted to the Division shall be signed and certified.
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PART II Page 16 of 19 PERMIT NO: C0-0001121 A. GENERAL REQUIREMENTS
- 1. The permittee shall not discharge af ter the expiration date of this permit without authorization. In order to receive authorizatica to discharge af ter the expiration date, the permittee shall, no later than 180 days prior to the expiration date of this permit, submit a new CDPS application and fees as required by the permit issuing authority.
- 2. The permittee is required to submit a fee as set forth in Section 25-6-502 i C.R.S. 1973 as amended. Failure to submit the required fee is a violation of this permit and will result in the suspension of said permit and enforcement action pursuant to Section 25-8-601 et. seq., 1973 as amended.
- 3. Within sixty (60) days of the effective date of this permit, the permittee shall file a statement with the Environmental Protection Agency and the State Water Quality Control Division which shall contain the names of the person or persons who are designated to report conditions as noted in
" Noncompliance", Part II, Section A Paragraph 2, and as referenced in " Oil and Hazardous Substance Liability", PART II, Section B, Paragraph 8. The permittee shall continually update this list as changes occur at the facility.
- 4. Within three (3) sonths af ter the effective date of this permit, a flow-asasuring device shall be installed at all discharge points. At the request of the Regional Administrator of the Environmental Protection Agency or the Director of the State Water Quality Control Division, the permittee must be able to show proof of the accuracy of any flow-measuring device used in obtaining data submitted in the monitoring report. The i flow-measuring device must indicate values within ten (10) percent of the actual flow being discharged from the facility.
- 5. Discharge points shall be so designed or modified that a sample of the effluent can be obtained at a point after the final treatment process and prior to discharge to state waters.
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' ,2 3254 PART III Page 17 of 19 l
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[ SET"ILiNG POND 5 PART III pag,19 og 19 j l ................... Permit No.
) L I ' # l. i CO-0001121 N i STO R.AcaE SAtlWS i
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l COLORADO DEPARINENT OF HEALTH Water Quality Control Division 4210 East lith Avenue Denver, Colorado 80220 RATIONALE ,-
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AMENIMENT NO: 1
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PUBLIC SERVICE COMPANY OF COLORADO Fort St. Vrain Power Plant
- L PERMIT NO: CO-0001121 ,~
UELD COUNTY _ 1# .
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By letter of March 21, 1985, PSC has requested adjudication of the permit. This amendment is for the purpose of addressing the pertinent items of that , letter which are as follows: s 9 i E
- 1) Clarification of monitoring Iccations for the net TSS limitatio'M n,h This A -
, secitemresultsinamodificationtopages2,3and4ofthedermite m ..
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- 2) Clarification of monitoring for the turbine drain, reactor building drain, and the sewage treatment 1,lant. Numeric limitations are not bei~ng imposed. This item results in a modification to page 6 of the permit. ,
- 3) Inserting teeperature and oil and grease limitations for discharge point 002 which had been omitted. This item results in a change to page 4 of the permit. g
- 4) Elimination of the 7 day average net TSS limitation for discharge points 001 and 002. This change is appropriate as the state effluent standard is not applicable when technology based limits exist.
- 5) Page 5 of the permit has been modified to include alternatives t5 the annual monitoring requirement for the 126 priority pollutants. ,
+
Special Monitoring Because of dilution that is encountered for effluents from 1) the turbine building drain 2) the reactor building drain and 3) the sewage treatment plant, special monitoring vill be required to demonstrate proper treatment of these vaste streams. The monitoring location for the turbine and reactor building drains shall be prior to mixing with other flows. Monitoring shall be for tots 1 suspended solids, pH and oil and grease on' a monthly basis. The. sample type shall be a grab. The monitoring point for the sewage treatment plant shall be at the outfall from the facility but prior to mixing with other flows. Monitoring shall be for total suspended solids, BOD and fecal coliform. The saeple type should be a grab sample except for BOD which vill be a cocposite sample. The frequency shall be monthly. Should inadequate treatment of the waste streams be identified by the , monitoring, the Division may modify the permit to impose numeric limitations - at the respective points, however, no numeric limitations vill be imposed at
- this time. -
COLORADO DEPALTMENT OF HEALTE" Water Quality Control Division Rationale - Page 2 Permit No: CO-0001121 Special Monitoring (Continued) In order to prevent future problems on permit interpretation, several pages of the rationale have been- changed to parallel the clarifications of this amendment. A concern previously raised by EPA is the imposition of effluent limitations on internal waste streams as allowed by 40 CFR Section 122. 45(i). The wording in this section. states that limitationa.,"may be. imposed". but .does not . . state that it is mandatory. Based on the fact that the perelt requires. - monitoring of the individual waste streams and is conditioned to be reopened if treatment of the vaste streams is inadequate, it is the division's position that EPA's concern has been properly addressed. Robert J. Shukle . March 27, 1985' Since public notice of the permit it was learned that the reactor building has no accessible ronitoring point and thus, monitoring of this internal waste ! strea= will not be required. Additionally EPA identified a problem with limitations for the 126 priority pollutants at discharge points 001 and 002. They indicate that trace levels of heavy metal priority pollutants will likely be present in the discharge, however, the limitations should control priority pollutants associated with chemical addition for cooling tower maintenance. Pages 3 and 4 of the permit have been changed to reflect this position. Robert J. Shukle September 4, 1985 4
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COLORADO DEPAR'IMENT 0.F, HEALTH Water Quality Control Division 4210 East lith Avenu'4T Denver, Colorado 80220 -,5y v
^ RATIONALE
'g, PUBLIC SERVICE COMPANY OF COLORADO y2 FT. ST. VRAIN POWER PLANT
. PERMIT NIMBER: CO-0001121
~Q}.g WELD COUNTY o.
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'l FACILITY TYPE: ' T. . Industrial - Renewal
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e. SIC No.: 4911 l}- , LOCATION: . . - - In Sections 34 and 35 T4N, R6N and, Sec. 3. T3N*,[ "
} R6N , 6th Principal Meridian -
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LEGAL CONTACT: A. George P. Creen
~'_
.: Manager, Production Services '"
$? P. O. Box 840 ,
-: 1 Denver, CO 80201 ,
;g (303)+797-4122 ly.
LOCAL CONTACT: " ,[~ _ John V. Cahm ,
.T P. O. Box 361
,3 Platteville, CO 80651 --
,', (303)+758-2253 RECEIVING WATERS: >
001A + B, and 003 - South Platte River
'.~. 002 and 004 - St. Vrain Creek
. .f SUE-EASIN, SEZENT: South Platte River Basin - Segment 1
~
CLASSIFICATION:- South Platte, Segment 1: Recreational, Class 2 Aquatic Life, Class 2, (Wars)- - Agricultural Use .. St. Vrain, Segment 3: Recreational, Class 2 Aquatic Life, Class 1 (Warm) Agricultural Use Q7-10 (Stream low-flov): South Platte = 20.1 cfs St. Vrain = 35 cfs DESIGN FLOW: Actual System capacity at maximum output - 4.5 MGD, see FACILITY DESCRIPTION for details. The actual maximum flow is estimated to be 3.5 mgd.
2 4 , COLORADO DEPARTMENT OF HEALTH Water Quality Control Division , Rationale - Page 2 PERMIT NUMBER: CO-000n21 'I FACILITT DESCRIPTION: l' ; A.) General Descriotion
.The facility is a nuclear powered steam. electric generating facility located near Plattevine, Colorado. Figure 1, page 17 of the permit shows the facility location.
The plant is designed to generate 343 megawatts of electricity (total nameplate capacity). The facility has operated at approxiastely 50% of capacity for the last year (with some periods of complete shutdown).
- This facility is unique An that the reactor is gas rather than liquid ,
cocied; the facility has a high temperature,. gas-cooled reactor (HTGR). l The gas, helium, is the medium in primary contact with the fuel source. , The helium heats water through non-contact tubing and the resulting steaa drives the turbines, is condensed and returned to the reactor. The ! cooling water used in condensing steam from the turbines is non-tontact. ; and is cooled itself via mechanical draft cooling towers before return to ; condensers. The primary discharge stream from the facility is this '
- cooling tower blowdown.
B.) Water Systems a ! Figure 2, page 18 of this permit shows the facility's liquid waste
, system. The fonowing water systems summary includes a discussion from i the Susaary of Rationale of the previous permit 1 and additional information provided by a site visit and the renewal application.
4 l 1.) Domineraliser Regeneration'Backwsshes (Non-discharging System) i ! The condenser /feedwater system is a closed loop desineralized systen j providing feedwater to the primary coolant system (i.e. the loop on 4 Figure 2 between the reactor and the steam generators). The 7 domineraliser regeneration backwash is discharged to evaporation ' ponds lined with 30 mil F7C. These evaporation ponds, along with the l layout of the rest of the plant facilities, are shown on Figure 3, page 19 of the permit; the evaporation ponds are to the north of the ! plant itself and to the east of the main cooling towers. ; 2.) Turbine Building Drains l Wastes from the turbine building sump are pretreated by'an oil I I separator; the effluent from the separator is conveyed to the
- diversion box, where it is discharged with the main cooling tower blowdown. The oil is disposed of as solid. waste. The turbine l building effluent derives from the miscellaneous drains within the turbine building. Total discharge from this building averages 72 spa (100,000 spd).
1 Paul E. Winiamson, March 16, 1978
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*b COLORADO DEPARTMEhT OF HEA1TH Water Quality Control Division Rationale - Page 3 PDLMIT NUMBER: Co-0001121 1
FACILITY DESCRIPTION: l B.) Water Systems ! 3.) Service Water Cooling Tower Blowdown The service water system serves to provide cooling for various individual pieces of equipment and/or closed cooling systems within the reactor or turbine generator supporting systems. The service water makeup is domestic drinking water; the shallow well system is used as backup. Presently, the service water cooling tower blowdown is discharged to the main cooling tower system. The blowdown can be routed to the north yard drain and discharged with the circulating water system blowdown to the South Platte River (001) or through the alternate (002) to the St. Vrain Creek. Flow rate of the service water tower discharge averages 400,000 spd. 4.) Domestic Wastewater Treatment System Approximately 175 persons contribute to the domestic wastewater treatment system. Effluent flows estimated at 3,000 spd are treated in an aerated lagoon system. The overflow from the lagoon is mixed with the north yard drain. Domestic wastewater constitutes less than 1% of the total effluent flow volume. Water supply for domestic purposes is the Central Weld County Water District. 5.) Main Cooling Tower Blowdown The circulating water system provides coolant to the main condenser for use in condensing steam from plant sources, and transfers the heat to the atmosphere by means of a cooling tower. The system also serves as a water reservoir for the fire protection system and is a backup to the service water system. Makeup is normally the South Platte River and/or the St. Vrain
~
River. Shallow wells are used as a backup makeup source. ! , Blowdown is routed to the north yard drain which discharges to the South Platte River (001) or to the alternate St. Vrain Creek i (002). Flow rate for the circulating water blowdown averages at full load 1.5 (This includes Service Water cooling tower blowdown). The major effluent is from the main cooling tower
- blowdown, which is discharged after about 2 1/2 to 5 cycles to the diversion box and through 001 or 002. Sources of this water are the South Platte River and the St. Vrain Creek.
_ . _ . . _ _ . - , , , -- - , _ y _ ...m .- . ,
COLORADO DEPARTMENT OF HEALTH ., Water Quality Control Division Rationale - Page 4 PERMIT NUMBER: CO-0001121 FACIL1?T DESCRIPTION: B.) Water Systems 6.) Reactor Building Sump , Centents of the reactor building sump are normally filtered, ; nonitored, and discharged at a restricted flow of 10 spa. The filters are capable of removing' potentially radioactive i particulate matter from the effluent. This effluent passes to the liquid waste disposal line through an cil separater and out to the cooling tower blowdown. Batch-discharges from the reactor building sump may be made at a flow rate of 50 spa. The i water source for the reactor building sump is miscellaneous drains within the reactor building. Normal discharge from this sump averages 10 spa (less than 15,000 spd due to intermittent use). 3 This intermittent effluent is monitored for any radioactive materials prior to discharge; the discharge of any radioactive materials, including liquid wastes, is regulated by the Nuclear Regulatory Commission. Liquid effluent reports required by the Nuclear Regulatory Commission will be submitted as a part of the NPDES report. A summary of the radiological data submitted with the permit application has been included as Appendix A to this rationale. 7.) Water Sources to the facility 3 l The water sources to the facility are summarized below: 4
- 1. South Platte River and St. Vrain Creek: 3,000 spa (4.3 i
MGD) average estimated at full plant load; supplies the main cooling system. (Discharge points 003 and 004 are for cleaning the trash screens at these intake structures for the South Platte River and St. Vrain Creek respectively.) t
, 2. Six (6) shallow wells, 40 to 120 foot depth, total rated j
capacity of 8,000 spa; average pumping rate of 200 spa (0.3
. MGD). Supplies the service water system; flows can be diverted to the main cooling system if required.
- 3. Domestic source is from the Central Weld Water District, estimated at 100,000 spd. .
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*' COLORADO ~ DEPARTMENT OF HEAZ.TH
, Water Quality Control Division Rationale - Page 5 PERMIT NUMBER: CO-0001121 FACILITY DESCRIPTION:
C.) Discharge Points The following table summarizes the discherge points, their sources, average flows when operating and the receiving streams. Average Flow Discharge Point Source when operating Receiving Stress 001A Hain Cooling Tower Blowdown- 1.1 and (farm pond over-via N. yard drain flow to) South Plattei Service Water Cooling Tower 0.5 and South Platte ' Blowdown-via N. yard drain , Domestic wastewater via N. 0.003 and South Platte yard drain Turbine Building Sump-via S. 0.100 and South Platte yard drain Reactor Builcing Sump-via S. 0.015 agd South Platte yard drain Bypass water-via N. yard drain 1.7 agd South Platte 0015 same sources as for 001A Goosequill Ditch to Jay Thomas Ditch to the South Platte 002 alter: ate discharge for 001 during St. Vrain Creek ; ditch maintenance (does not contain Jay Thomas ditch water) - 003 discharge from trash tcreens no flow South Platte at South Platte River intake Data available 004 discharge from trash screens no flow St. Vrain Creek at St. Vrain Creek intake data available l 005 discharge from St. Vrain no flow St. Vrain Creek
- Creek settling pond data available ,
Total flow = 3.318 and
- Escianted maximum flow = 3.5 mad (Actual capacity of systest at full power = 4 to 4.5 and) e The flow of 0013 or 002, whichever is the discharge point, is diluted by raw water by a flow of 1.7 and at a minimum. This is a requirement of the Nuclear
- Regulatory Commission (NRC) during liquid waste releases.
j Public Servf.ca leases land adjoining the plant site to farmers for agricultural , purposes. Plant discharge may be intersingled with water in the Goosequill
- Ditch, Beeman Ditch and Jay Thomas Ditch during irrigation periods.
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l COLORADO DEPARTENT OF HEALTH Water Quality Control Division. Rationale - Page 6 (' PDLMIT NUMBER: CO-0001121 i i, t
- MONITORING
SUMMARY
AND OPERATING HISTORY:
- i A.) Operatina Historv l The facility has had a few violations of their permit limits for'TSS, pH, . !
and some metals (iron, zine) in the last three years. TSS violations have , usually occurred in the spring or summer when precipitation increases the , I suspended solids _ levels in the intake water. As a result of these . , violations Public Service Company has requested that they be allowed to ; meet not limitations in this permit. Net limitations based on process ' water (cooling and low volume wastewaters) concentration minus the ! concentration of TSS in the raw water after sedimentation, have been l included in this permit. See DISCUSSION, Part E. of this rationale. On 3 occasions waste acid from the condensate polisher regeneration systes
- has entered a discharge point rather.than being diverted to.the neutralization sump. (The source of this probles has been traced to ,
3 conductivity recorder and valving failure in the autoestic mode. .This l { problem was =11=fnated by the installation of an interlock system in l April, 1983). These system breakdowns resulted in pH violations and the j acidic conditions probably caused dissolution of cooling tower scale, i resulting in metals violations. -r 2.) State Samplina Data 4 Appendix B summarizes state sampling data since 1979. i 4 C.) Self-Monitorina Reports { Appendix C summarizes self-sonitoring data for discharge points 001 and- ' 5 002 and intake data since 1979. Radiological data has been included as { 1 Appendix A.
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APPLICABLE RULES AND REGUIATIONS: ! A.) Federal i I
, T.'.is facility is subject to Effluent Regulations for Steam Electric Power Generating Point Source Category, which were published in final form on l_ November 19, 1982, 40 CPR Part 423.12 (BPT) and 423.13 (AAT).
BPT for all subcategories includes the following provisions: ' (1) The pH of all discharges, except once through cooling water, shall be
. within the range of 6.0-9.0.
(2) There shall be no discharge of polychlorinated biphenyl compounds, such as those commonly used for transformer. fluid.
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.9 E.
COLORADO DEPARTET OF HFETH
--Water Quality Control Division Rationale Page 7 PDtMIT NUMBER: CO-0001121
. l APPLICABLE RULES AND REGULATIONG: (Continued)
A.) Federal (Continued) (3) Neither free available chlorine nor total residual chlorine may be. discharged from any_ unit for more than two hours in any one day and not more than one unit in any plant may discharge free available or- ; total residual chlorine at any one time unless the utility can demonstrate to the State that the units in a particular location cannot operate at or below this level of chlorination. , There are two regulated categories of waste streams at the facility: (1) low volume waste sources and (2) cooling tower blowdown. Following is a discussion of these effluent streams and the applicable federal limitations for each: 1.) Low Volume Waste Source Iow volume waste sources are defined as:
"wastewaters from wet scrubber air pollution control systems, ion exchange water treatment system, water treatment evaporator blowdown, laboratory and sampling _ streams, boiler blowdown, floor. drains, cooling tower basin cleaning wastes, and recirculating house service water systems."
At this facility low volume waste sources would' include turbine building drains, and reactor building drains. See previous discussion, items B.) 2.) and 6.) under facility description. in this SOR. These streams constitute an average flow of 115,000 ; spd. The affluent limitations applicable to low volume waste sources are as follows: BPT/ BAT BPT effluent limitations Average of daily values for 30 Pollutant or pollutant property Maximum consecutive days for,any 1 shall not exceed-j day _(ag/1) (ag/1) i TSS 100.0. 30.0 011 and Grease 20.0 15.0 1
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COLORADO DEPARTE' Y I 0F HEALTH Water Quality Control Division i Rationale - Page 8 PERMIT NUMBER: -Co-0001121 APPLICABLE RULES AND REGU1ATIONS: 2.) Cooling Tower Blowdown Cooling tower blowdown includes blowdown from both the service water cooling tower and the main cooling tower. The nazimum total blowdown at full operating capacity is estimated to be 1.5 and. The affluent limitations applicable to cooling tower blowdown are as follows: The quantity of pollutants discharged from cooling tower blowdown shall not exceed the quantity determined by multiplying the flow of cooling tower blowdown times the concentration listed in the following table: Effluent characteristic Maximum concentration- Average concentration (ag/1) (ag/1)~ Free available chlorine 0.5 0.2' Effluent characteristic Maximum for any 1 day Average of daily
. (as/1) values for 30 consecutive days shall not exceed-(ag/1)
Zine 1.0 1.0
- Chromium 0.2 0.2 Phosphorus 50 50 Cather corrosion (1) (1) inhibiting materials ILimit to be established on a case by case basis.
i 4 e 1 - l ! l l
. . _ , . . _ . . _ , _ - . , . . . . _ _ _ _ _ _ _ . - , , _ . . - . . _ _ . . . . - _ , _ . . . - . . . . . ~ _.
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( COLORADO DEPARTMENT OF HEALTH Water Quality Control Division Rationale - Page 9 ' PERMIT NUMBER: CO-0001121 APPLICABLE RULES AND REGULATIONS: A.) Federal (Continued) 3.) Domestic Wastewater Domestic wastewater constitutes less than 1/10 of 1% of the total effluent discharge. In order to establish that secondary standards for sewage treatment plants (Regulations for Eff1 rent Limitation, 10,1.0) are being met, this effluent stream must be i monitored before it is combined with any other effluent streams. B.) State State Effluent Standards (SES,10.1.4) apply to all discharges at this facility. In this case, State Effluent Standards will limit oil and i greare to 10 as/1 and no visible sheen. In addition to State Effluent Standards, the water quality standards for the receiving streams (3.8.6) also apply. The following dissolved crygen, [ pH and focal colifora limitations apply to both the South Platte River and St. Vrain Creek and to their tributaries at this facility's discharge points: D.O. = 5.0 mg/l pH = 6.5-9.0 Fecal Califorms = 2000/100 31
\
In addition the Water Quality Standards (WQS) for Sessent 3 of St. Vrain Creek are as follows: (ag/1) i NHS = 0.06*, unionized Mercury (Hg) = .00005 l Residual C12 = 0.003 Nickel (N1) = 0.2
, Cyanide (free) = .005 S as RSS = 0.002 undis. Selenina (Se) = 0.02-Silver (Ag) = 0.00015 Baron = 0.75.
l Nitrite (N0 2 )_= 0.5* Zine (Zn).= 0.1 l Iron (Fe, toc) = 3.0 a Arsenie (As) = 0.05 Manzanese (Mn, tor) = 1.0 cadmium (Cd) = 0.001 Chromium (tri-) = 0.05 Chromium (her) = 0.025 ; Cooper (Cu) = 0.015 ; Lead (Pb) = 0.05 L
3 a
. +*, ;
i COLORADO DEPARTMENT OF HEALTH Water Quality. Control Division Rationale - Page 10 , PIRMIT NUMBEL: Co-0001121 APPLICABLE RULES AND REGUIATIONS: B.) State (Continued) The WQS for Segment 1 of the South Platte River are as follows: (ag/1)
- NHS = 0.10*, unionized Mercury (Hg) = .00005 Residual C12 = 0.003 Cyanide (free) = .005 Nickel (Ni) = 0.1 S as H,5 - 0.002 undis. Selenium (Se) = 0.02 ,
' Boron = 0.75 silver (Ag) = 0.0001 Nitrite (N0g) = 0.5* Zine (2n) = 0.14 Arsenic (As) = 0.05 T Eii (Fe, tot) = 1.25 Cadmium (Cd) = 0.001 Mansarese (Mn, tor) = 1.0 Chrosive (tri) = 0.05
- Chromium (her) =.0.025 i Cooper (Cu) = 0.025 !
4 Lead (Pb) = 0.025 i i i 3 2 i NH good,secondary NO , assuming treatment.that numeric standards can be achieved throug See stress standards for complete tert. The Planning and Standards section of the Water Quality v s on Control Di estimate the annual Q7 yo low flows of the receiving streams follows: to be as
\
.- St. Vrain Creek L South Platte River20.1 35 efs (22.6 mad) efs (13 mad) i 1
These stream flows are used in a mass balance calculation with b round concentrations and strema standards for the receiving streams e to determ the allouable concentration of each constituent in the effl uent stress. i 4
. 4 il I
- - -- - . - . . - - . - - - - . . -- . . . . - . - - - - - . _ =.
- . 1 COLORADO DEPARTMENT OF HEALTH Water Quality Control Division Rationale - Page u PERMIT NUMBIR: CO-0001121 APPLICABLE RULES AND PIGUMTIONS:
B.) State (Continued) Fonowing is a sample calculation for sinc, being discharged to St. Vrain Creek: QsC , = QdCd + QbCb Where, , Cd
= concentration in discharge, unknown
= discharge flov = 3.5 agd Qd Cb
= background concentration in stream, assumed to be zero in this case Qb
= stream flow = 35 cfs C.
= allowable stream concentration
=
stream standard = 0.1 as/1 Qs
= downstream flow
=
Qd + Qb = 35 agd + 22.6 and
= 26.1 agd Cd
= CsQs - CbQb = 0.1 ag/l (26.1 and)
(3.5 and) Qd
= 0.1 ag/l (7.46)
- = 0.75 mg/l Thus the sn owable concentration of zine in the affluent stress when being discharged to St. Vrain Creek is 0.75 as/1.
A summary of the allowable levels of water quality limited parameters for the two discharge points are as fonows: (the dilution ratio for > discharge to the South Platte is 4.71). Parameter St. Vrain South Platte NH3 , unionized 0.45 mg/l 0.47 as/1 Residual C12 0.022 as/1 0.014 as/1 Free CN 0.037 63/1 0.024 ag/l S as H2 S, undissociated 0.015 mg/l 0.009.ag/l i Boron 5.6 ag/l , 3.53 as/1 4
--. 7 - . , , , - . - ., a e ,- . , , . , ,
' ~ **
O- 0,, ( ( 9 .. 4.. COLORADO DEPAR1 MENT OF HEALTH Water Quality Control Division Rationale - Page 12 PERMIT NINEER: CO-0001121 APPLICABLE RULES AND REGULATIONS: B.) State (Continued)-
' s
~
Parameter St. Vrain South Platte_ Nitrite (N02 ) 3.73 mg/l 2.36 mg/l e
;_ Arsenic 0.373 mg/l 0.236 mg/is' Cadmium 0.0075 mg/l 0.0047 ag/l Chro=fum (tri) 0.373 ag/l 0.236 ag/1,
( Chromium (hex) 0.187 mg/l 0.118 mg/12, . . Copper -- 0.112 mg/l .. :0.118 ag/ly, .J~ - Lead - 0.373 mg/l - 0.118 ag/1' - Mercury 0.0004 ag/l 0.00024 ag/l
. Nickel 1.492 ag/l 0.471 ag/I'.
Selenium 0.149 ag/l 0.094 mg/fi-Silver 0.001 mg/l 0.0005 mg/l , Zine 0.746 mg/l 0.66mg/115 Total Iron 22.38 mg/l 5.89 ag/I T Total Manganese 7.46 mg/l 4.71 ag/1'? tg EFFLUENT LIMITATIONS, RATIONALE AND MONITORING FEEQUENCIES:
]' * '
The following table su==arizes effluent limitations, rationale and monitoring frequencies and locations: Q A.) Discharge Point 001 - South Platte )[,' M onitoring,'- Monitoring Parameter Lieftation Rationale Trecuency Location Tiov N/A Monitor Weekly -- 001B Residual Chlorine
- 0.014 ag/l -
001A (daily max) Stream Standard Weekly at 001A Zine 0.66/1.0 mg/l Stream Standards / - 001B BAT for cooling l tower blovdown Monthly Ammonia Nitrogen N/A Monitor only Monthly 001B Total Suspended Solids 30/100 mg/l State Effluent ** (net) Std./BPT for low volume vastes Weekly 011 and grease 10 mg/1, no State Effluent 001B sheen Standa rd Weekly Phosphorus, Total N/A Monitor Monthly 001B Temperature 30 C (86 F) Stream Std. Weekly at 001A 001A Cu 001B Fe 001B Cr 001B 126 P.P. ..... 001B pH 0015 i ~
*gCFa'use the preserft'* detection leve'1' for ehtorine is 0.05 mg/1, Tid" levels reported KO.05 mg/l vill be considered in compliance until such detection level is lowered.
L ** Monitor per the net Ilmitation requirements of the permit.
r- .- _ - ( - A. Ms t
'E ?
COLORADO DEPARTMENT OF HEALTE, ., Water Quality Control Division Rationale - Page 13 PERMIT NIMBER: CO-0001121 EFFLUENT LIMITATIONS, RATIONALE AND MONITORING FREQUENCIES: k. A.) Discharge Point 001 - South Platte
. 7' Monitoring ,
Parameter I.- Limitation Rationale Frequencyt
- a g .
Total Copper . , , 0.118 mg/l_ Stream Standard Mo,nthly Total Iron m . ./p 1.0/1.0 mg/l BPT/ BAT for metc1- -Monthly ,, zw cleaning vastes -
~
Total Chromium
~
0.2/0.2 mg/l BAT-cooling tower Monthlyf blowdown 'A
. s .-
dg 126 Priority Pollutants, No detectable BAT W Annually, t
!t except Total Chromium amount *- J f and Total Zinc -I d t ,'
pH 6.5-9.0 Stream Standard Veekly 4 L. 3 B.) Discharge Point 002 a St. Vrain Creek .Y I,
. h .$
Monitoring ,Monityring Parameter Limitation Rationale Frequency Frecuency , Flow N/A Monitor Weekly 00 Residual Chlorine 0.022 mg/l Stream Standard Weekly [Y.00 , (daily maximum) }.- w Zinc 0.75/1.0 mg/l Stream Standard / Monthly 002? BAT. f; {, A=monia nitrogen N/A Monitor Monthly 002. Total Suspended Solids 30/100 mg/l State Effluent Weekly - (net) Std./BPT Oil and grease 10 mg/1, no State Effluent ."y[
+ 00. -
sheen Standard Weekly '
. J Phosphorus, Total N/A Monitor Monthly ? 002)
Temperature 30 C(860F) Stream Standard Weekly ' 002t Total Copper 0.112 Stream Standard Monthly 002-Total Iron 1.0/1.0 mg/l BPT/ BAT for Monthly 002[ metal cleaning b wastes K Total Chro=ium 0.2/0.2 mg/l BAT-cooling Monthly 002% tower blowdown - p 126 Priority Pollutants, No detectable BAT Annually 00 ( except Total Chromium amount - and Total Zinc , a i PH 6.5-9.0 Stream Standard Weekly 002 st- tt .- l
** Monitor per the net Ifmitabion requirements of the permit. ; .,
~
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- d. }
< COLOgADO DEPARTMENT OF HEALTH
'. Water Quality Control Division e Rationale - Page 14 PERMIT NUMBER: CO-000u21 EFFLUENT LIMITATIONS, RATIONALE AND MONITORING FREQUENCIES:
l C.) Disebarse Points 003 and 004 Discharge points 003 and 004 are limited to South Platte River water and i St. Vrain Creek water respectively and are for the purpose of cleaning the trash screens only. , D.) Discharse Point 005 L Discharge point 005 is a continuous discharge of water from the settling : basin sluice way. Water will be sluiced continuously via an eighteen inch square -bottoo slide gate off of the intake from St. Vrain Creek. ! Sluicing will be shut off only "during dredging operations, repairs on the gate valve and pump and when the intake is closed off." , E.) All Discharse Points 4 In addition to the previous limitations, the fonowing limitations apply
- to au discharge points
, (a) There shan be no discharge of polychlorinated biphenyl compounds l l such as those commonly used for transformer fluid.
4 I (b) Neither free available chlorine nor total residual chlorine may be discharged from any unit for more than two hours in any one day and , . not more than one unit in any plant may discharge free available or ! total residual chlorine at any one time unless the utility can . I demonstrate to the State that the units in a particular it, cation l cannot operate at or below this level of chlorination. ! 4 i DISCUSSION: ' i A.) Chlorine ; 2 BPT for cooling tower blowdown is 0.2/0.5 mg/l free available chlorine.
- There are no technology based limitations on chlorine for low volume ,
- unstes.- Because cooling water constitutes the bulk of the process water '
, effluent stream, a mass ha1= nee shows that the technology based standards i translate directly into effluent standards for the entire process water ' effluent stream: 0.5 mg/l as a daily maximum, and 0.2 as/1 as an average l concentration for free available chlorina. l The fonowing calculations on stream standards for both receiving streams , show that the cooling tower blowdown can't exceed 0.03 as/1 residual chlorine and sein meet the Water Quality Standard at the South Platte or exceed 0.05 mg/l and meet the standard at St. Vrain Creek: Oscs QdCd + QbCb . Where, i 4 Qs =, stress low flow and raw water flow + discharge flow C, = an owable instream concentration = 0.003 as/1 Qd
=
discharge flow (excluding raw water) i i .. 5
. . . - . _ . , , -. ..-,._....___,m._ . _ _ , , _ _ . _ , - , , , _ , _ , _ _ _ _ , . . - _ . . . _ , ._ .
. . . . , 'E*
i C010RADO DEPARTMDIT OF HEAI.TH Water Quality Control Division Rationale - Page 15 PERMIT NtHBER: Co-0001121 DISCUSSION: A.) Chlorine . Cd
= discharge concentration (excluding raw water) ,
i Qb
= background stream flow = Q7-10 + raw water flow Cb
= background concentration, in this case assumed to be sero-Cd
" c Os,-QCbb Qd 1
South Platte River as receiving stream Cd
= (13 MGD + 3.5 MGD) 0.003 ma/1 1.5 MGD l
i = 0.03 as/1 residual chlorine I St. Yrain Creek as receiving stream l Cd
= (22.6 MCD + 3.5 MGD) 0.003 as/1 1.5 MGD
= 0.05 mg/l residual chlorine i Because total residual chlorine reflects free residual chlorine and j combined residual chlorine, it will limit the free available chlorine levels to below BPT. Therefore there is no need to impose the technology
- based standard at a point before mixing with the raw water Water Qual'.cy standards dictate effluent limitations for chlorine.
When discharge point 001A and 002 are used, the discharge includes raw . water flow. Thus the numeric effluent limitation must be adjusted so that !
- the allowable discharge concentration reflects the tots 1 discharge volume,
, rather than just process water effluents i
Cd
= total concentration at monitoring point (includes raw water)
Qd
= total flow at monitoring point (includes .rew water) i
- Cd , QsCs-QCbb Qd ll South Platte - 001A
=
- (13 MGD + 3.5 MGD) 0.003 as/1 -
3.5 NGD I
= 0.0141 ag/l D
. , - . , , - _ , , , , . . ...,-..,n.7y,-- , , , . , ,..w,. , , , , _ , . _ . .- . , ,. , . ,. - -, ,._._.w., .,.. _ ,,_,n. . . ..., + . . , .. , , _ ,,
- - ~
_ t. ..
.s .
( COLORADO DEPARTMENT OF HEALTR Water Quality Control Division Rationale - Page 16 PERMIT NIMBER: CD-0001121 DISCUSSION: , A.) Chlorine ) St. Vrain - 002 me .*
= (22.6 MCD + 3.5 MCD) 0.003 mg/1 , .. .
(3.5 MGD) , f r. ,s ..
. 1 . ; ;,
= 0.0224 ag/l
.'7 -
s B.) Phosphoru s ., Because phosphates may be used in the plant, monitoring for i- I phosphorus re=ains as a condition of this permit. -
'?' p. ,~ -
5.:l% ? 2 C.) Zine . ,, y .j.4 r,, ,._ Stream standards for zine dictate 30-day average levels; BAT levels [ for cooling tower blovdown are more restrictive as daily maximums, hence BAT levels dictate daily maximum levels. . D.) Ammonia . A=monia levels are not limited in this permit. Am=onia levels are relatively high in the intake water and data indicates that the facility reduces am=onia nitrogen levels. Monitoring for ammonia , nitrogen vill still be required. E.) Total Suspended Solids , State Effluent Standards (10.1.4) for TSS are 30 mg/l as a 30 day average and 45 mg/l as a 7-day average. These standards apply to all* discharges except storm runoff waters and agricultural return flows. BFT effluent limitations for TSS for low volume vaste are 30.0/100.0 mg/l as 30 day average and daily maximums, respectively. The above standards will be applied to the final discharge. The Nuclear Begulatory Commission (NRC) requires a minimum flow of 1,100 GPM through the North Tard Drain. If this 1,100 CPM minimum flow is not being maintained by releases from the main cooling tower or service water cooling tower, the flow is augmented by additional discharges from the NRC required storage ponds. This operational mode shall be adopted as a best management practice. In order to use net limitations, the permittee must monitor process water af ter the settling ponds, but before the storage ponds and at the monitoring points 0015 or 002 and the net TSS level shall be reported. m
,, ,[ ',i i- ;
COLORADO DEFARTMENT OF HEALTH Water Quality Control Division Rationale - Page 17 PERMIT NLMBER: Co-0001121 DISCUSSION: F.) 011 and Grease i BFT for low volume wastes is.15.0/20.0 mg/1. Since low volume wastes aske ; up such a small percentage of wastewater flow, the state effluent standard , i of 10 mg/l applicable to the cooling tower effluent stresa dictates, G.) Temperature , The temperature limitation is. based on protection of warm water aquatic i life in the receiving streams. H.) Total Iron and Total Copper Total iron and total copper are limited by BFT and BAT for metal cleaning wastes. Although the plant does not discharge chemical metal cleaning wastes per se, the facility has had _unintential discharges of high metal com:entrations due to acid spills from rhe condensate desineralisation , circuit. This acid probably solublised system metals and resulted in r higher than normal metals concentrations being discharged. (Ion exchange ' regenerant wastewaters which contained the acid should have been routed to the evaporation pond.) The not effect of the system breakdown was the discharge of waters similar in content to those of metal cleaning waste streams, in the case of total copper, stream standards are more restrictive than ; BFT/ BAT and are therefore applied. If no further problems with the condensate regeneration system or high metal levels occur within the next two years the _ permittee may wish to request a review of. the applicability of these effluent limitations. I.) Total Chromium.116 Priority Pollutants Total chromium and the 126 priority pollutants effluent limitations are ! dictated directly by BAT effluent limitations for cooling tower blowdown. J;) P.E I pH levels are dictated by stream standards. K.) Biocides : { A review of available information on the biocideg that the permittee i proposes to use indicates that the following additives (among others) .are
- not known to be or contain priority pollutants:
i l Bromine Chloride
. i
! Cocoadiamine ' s i .
- ~ --. . - - . .-- ._. - - . -
i ? .. . ';. i
-t .j l
, COLORADO DEPARTMENT OF HEALTH l Water Quality Control Division 'l Rationale - Page 18 l PERMIT NUMBER: CO-000n21 i DISCUSSION: K.) Biocides (Cont'd.) l Glycols to Hazylene Glycol ! Dodecyl guanidine acetate and hydrochloride j Isopropanol i n - alkylbenzyl - N-N-N-trimethyl ammonium chloride , Dodecyl dinethy1 ammonium chloride ! l n - alkyl (60: C1 4, 30: C16, 5% C12, 5% C18) dimethyl benzyl , annonius chloride Dibromonitrilopropionamide 1 j This does not preclude the possibility that some of these may degrade into
, priority ponutants or at a later date be determined to be priority 4
pollutants. The permittee is required to monitor for the 126 priority - ] penutants on an annual basis and chromium and sine on a monthly basis. t l s As an alternative to analysing for the 126 toxic ponutants on a yearly } basis the permittee may submit the following:
- 1. A list of the certified anal Nical contents of a n biofouling '
) and maintenance formulations used (manufacturer's certification !
- as to contents and priority pollutant status); and I i j 2. Engineering calculations demonstrating that any of the priority i pon utants present in the maintenance chemicals would not be detectable in the cooling tower discharge using appropriate j analytical methods. (These calculations must be based on the cooling tower discharge only and should not. include dilution by ,
, any other affluent streams.) If the Division's review of these submittals indicates compliance, the yearly analytical requirement may be waived provided the chemicals used l and basis for calculations does not change during the life of the permit. The permittee is required to report any changes in additive used at the j site ard the permit any be reopened to address these new additives or to j , reflect a s findings concerning what is or could degrade into a priority
- l pollutant. Additional analysis and/or limitations any be required at that l time. ,
i ! L. Expiration Date l This permit will expire on December 31, 1989. . 1 ! Judy Bruch~ l June 11, 1983 l i j e
-- .- . . . , . . , - . . - - , - , __. . . . - - . - , - ---n..., - . . - . , - . . - . - - - , , , - - , , . - . . . - - - - , , . , _ _ . , ~ .
i i COLORADO DEPARTMENT OF HEALTH lbtcr Quality Control Division Rationale - Page 19 PERMIT NUMBER: CO-0001121 APPENDIX A-1 1982 i
- UNITS JAN FEB MAR OUARTERLY TOTAL
- 1. Gross Beta Radioactivity a) Total Release Curies 1.40E-05 1.04E-04 3.09E-05 1.4 9E-04 b) Avg. Conc. before Dilution u C1/mi 4.50E-07 1.22E-06 4.52E-07 8.19E-07* l Avg Conc. Released UC1/al
! c) after Dilution above bkad 2.35E-09 3.05E-09 1. 3 9E-09 2. 34E-0 9*
- 2. Tritium a) Total Release Curies 2.55E-02 6.73E-01 2.74E+01 9.48E+01 j b) Avg. Cone. before Dilution UCi/al 8.27E-04 7.52E-01 3. 9 7E-01 5.04E-Ola 1 Avg. Conc. Released UC1/mi !
i e) after Dilution above bkad 4.82E-06 1. 5 9E-0 3 1.37E-03 1.26E-03* . i l l J 3. Dissolved Noble Cases ! a) Total Release Curies NSA NSA 2.37E-07 2.37E-07 b) Avg. Conc. before Dilution uC1/al NSA NSA 2. 95 E-08 2. 95 E-0 8 Avg. Conc. Released UCi/a1 , c) after Dilution above bkad NSA NSA 9.69E-11 9.69E-11 i 4 Gross Alpha Radioactivity , a) Total Release Curies 8.92E-07 1.85E-06 1.73E-06 4.47E-06 ! 5. Total volume of Liquid , Released before Dilution Liters 3.08E+04 8.55E+04 6.84E+04 1.85E'05
- 6. Total Volume of Liquid Used for Dilution Liters 5. 4 6E+06 3.96E+07 1.90E+07 6.41E+07
- 7. Eatinated Total Radioac-
- t,1vity Released by Radio-1 Isotope above Backaround
! Nuclide NPCw (uC1/al) Curies l 38 3E-03 2.55E-02 6.73E+01 2.74E+01 9. 4 8E+01 i 137Cs 2L-05 1.15E-06 9.23E-07 3.44E-06 5.51E-06 l 134Cs 9E-06 5.99E-07 NSA NSA 5. 9 9E-0 7 l 60Co 51-04 3.02E-07 NSA NSA 3.00E-07 i 97Nb 9E-04 NSA 1.11E-05 NSA 1.11E-05 ! 133Xe
- 2E-04 NSA NSA 2.37E-07 2.37E-07 l
- Represents a " weighted" average.
l 4.7E-05 = 4.7 x 10-5 5.2E+03 = 5.2 x 10+3 NSA means no significant activity. _ - _ . _ . , , _..-.._ , _ , ,-yy. .
.,m..,,,,,...-m., ___.-__._m. __,_,,,_,.,,_m_.,__,,-.,__,_,y._._ , . , - , . _ . , . 7,,___m, _...m_,, -
~
1 i COLORADO DEPARTMENT OF HEALTH Water Quality Control Division Rationale - Page 20 PERMIT NUMBER: CO-0001121 APPENDIX A-2 1982 UNITS APR MAY JUN OUARTERLY TOTAL
- 1. Gross Beta Radioactivity a) Total Release Curies 2.88E-05 2.13E-05 3.86E-05 8.86E-05 i D) Avg. Conc. before Dilution C1/ml 2.8eE-07 3.40E-07 3.50E-078 6.19E-07" Avg Conc. Released Ci/ml c) after Dilution above bkgd 1.16E-09 9.10E-10 1.68E-09 1.30E-09*
- 2. Tritium a) Total Release Curies 1.07E+01 3.56E+01 1.44E+01 6.07E+01 b) Avg. Conc. before Dilution C1/ml 1.09E-1 5.84E-01 1.59E-01 2.47E-01*
Avg. Conc. Released C1/ml c) after Dilution above bksd 4.28E-04 1.37E-03 7.62E-04 7.89E-04*
- 3. Dissolved Noble Gases a) Total Release Curies 1.23E-04 1.23E-03 5.14E-04 1.86E-03 b) Avg. Conc. before Dilution C1/a1 1.51E-06 2.37E-05 5.81E-06 8.64E-06*
Avg. Cone. Released Ci/ml c) after Dilution above bkad 7.95E-09 4.70E-08 2.68E-08 2.52E-08*
- 4. Gross Aloha Radioactivity a) Total Release Curies 2.56E-06 1.38E-06 2.23E-06 6.18E-06
- 5. Total Volume of Liquid
, Released before Dilution Liters 9.75E+04 6.29E+04 9.23E+04 2.53E+05
- 6. Total Volume of Liquid.
Used for Dilotion Liters 2.11E+07 2.28E+07 1.93E+07 6.32E+07
- 7. Eatinated Total Radioac-l tivity Released by Radio-
' Isotope above Background Nuclide MPCv (uCi/ml) Curies . 133Xe 200E-04 1.23E-04 1.23E-03 5.14E-04 1.86E-03 135Xe 200E-04 2.77E-07 NSA 5.75E-07 8.52E-07 3H 300E-03 1.07E+01 3.SoE+01 1.44E+01 6.07E+01 110AG(m) NSA 1.02E-06 NSA 1.02E-06 133Xe(W 200E-04 NSA 2.52E-06 NSA 2.52E-06
- Represents a weighted" average.
4.7E-05 = 4.7 x 10-5 5.2E+03 = 5.2 x 10+3
- l NSA means no significant activity.
3 -,-r.-v,, -
- - . , - . ,, ,,_m-
9
% l COLORADO DEPARTMENT OF HEALTH Water Quality Control Division Rationale - Page 21 PERMIT NUMBER: Co-0001121
- APPENDIX A-3 1982 UNITS JUL AUG SEP OUARTERLY TOTAL i
- 1. Gross Beta Radioactivity l
a) Total Release Curies 1.18E-05 4.53E-06 4.61E-06 2.10E-05 i b) Avg. Conc. before Dilution mci /ml 1.35E-07 8.56E-08 6.53E-08 9.89E-08* Avg Conc. Released C1/ml c) after Dilution above bkad 3.01E-10 1.27E-10 4.96E-11 1.72E-10*
- 3. Tritium a) Total Release Curies 1.31Et01 2.98E-01 1.92E+02 1.34E+01 1 b) Avg. Conc. before Dilution mC1/ml 1.53E-01 5.65E-03 2.68E-04 6.40E-02=
Avg. Conc. Released C1/ml c) after Dilution above bkad 4.32E-04 2.48E-05 1.13E-06 1.83E-04*
- 3. Dissolved Noble Gases a) Total Release Curies 1.46E-04 6.58E-05 6.99E-07 2.12E-04 b) Avg. Conc. before Dilution aC1/a1 1.69E-06 1.29E-06 9.14E-08 1. 46 E-06
- i Avg. Conc. Released C1/a1 c) after Dilution above bkad 5.67E-09 5.60E-09 3.57E-10 5.36E-09*
i 4 Gross Alpha Radioactivity a) Total Release Curies 2.09E-06 9.63E-07 1.09E-06 4.14E-06
- 5. Total Volume of Liquid Released before Dilution Liters 8.80E+04 5.32E+04 7.05E+04 2.12E+05
- 6. Total Volume of Liquid Used for Dilution Liters .2.22E+07 1.23EH)7 1.64E+07 5.08E+07 i
- 7. Estimated Total Radioac-i tivity Released by Radio-Isotope above Background Nuclide MPCv (uC1/al) Curies i 133Xe 2.0E-04 1.46E-04 6.58E-04 6.99E-07 2.12E-04
\ *
- Represents a " weighted" average.
4.7E-05 = 4.7 x 10-5 5.2E+03 = 5.2 x 10+3 - NSA means no significant activity. l - 1
1 , 2, ~-<;
' i.
e 3' i .. i
,,h i APPENDIX B - S" M SAMPLING
*rF8 Date Discharge Flow I pH D.O. Residual Oil & TSS Iron Tin Zinc II "e k Point ' _(s.u.) -(ag/1) Chlorine Crease (mg/1) (ag/1) (og/1) (eg/1) l l(HGD)
' f .
(as/1) (og/1)
- Hlf gg -
e VISUAL g,pg 11/10/82 4.43 0.0 001A -- - K10.0 - -- -- 001B 2.64 8.29 9.6 - K10.0 10.0 0.20 KO.20 0.025 n 7pn Ih9 . 11/10/82 INTAKE -- -- -- - -- - 0.220 KO.20 KO.010 ,o " "o ol 7/7/82 0015 2.86 8.24 6.8 - - 74 1.120 2.000 0.079
?.
e gm r" 4/14/82 001A 0.0
~
ph 2.34 8.42 8.5 gg 0018 - -- 36 0.580 K0.20 0.130 o 1/5/82 001A 7.97 11.8 0.45 - - -- -- -- t 0018 0.52 -- - - - 26 0.450 KO.20 0.042 10/13/81 001A 3.52 - -- 0.0 K10.0 -- -- - 0018 0.52 8.28 8.6 -- -- 19 0.570 KO 20 0.043 7/9/81 001A K6.86 - -- 0.0 K10.0 - -- 0018 4.26 8.1 7.0 - -- 28 0.610 KO.20 - 0.120 w (estimated) 4/28/81 001A 0.05 - 0.0 - - - }
- 0015 7.84 12.7 -
K10.0 34 0.450 KO.20 0.110 i 1/20/81 001A 7.7- 10.3 0.0 K10 K10 -- -- 0.730 9/23/80 001A 3.17 8.21 8.9 0.0 K10 22 0.42 KO.10 0.10 '_ 11/16/79 001A -2.0 7.7 12.8 - K10 10 KO.10 KO.20 K0.02 11/16/79 001A hexavalent chromium 0.1 mg/1, silver 0.02 mg/l [ K = Lens Than
- I
1 l APPENDIX C COI.ORADO DEPARTHENT OF: HEAL'T { Self-Honitoring R2porto Water Qu211ty C:ntrol Divicj)a'
- 1) Dischargs Point 001 Raticacio - P gs 23 ,"yj , .
PERMIT NUMBER: CO-0001121 Average / Maximum except for pH and temperatures, which are minimum / maximum Parameter Ammonia Tot. Res. Flow Total 011 & pH Total Tot. Filt. Temp. Tot Non-Filt. Total Dato Nitrogen Chlorine (NGD) Iron Crease (w.u.) Phosphorus Residue (OF) Tin Residue Zinc (mg/1) (eg/1) (ag/1) (eg/1) (eg/1) (ag/1) (eg/1) (ag/l (ag/1) 1/1-4/1/79 3.95/4.20 0.00/0.00 2.77/ 0.353/ 27.75/ 7.36/ 10.44/ 1172/1893 34.0/ 0.0000/ 14.48/ 0.905/ 5.47 0.584 231.90 8.80 15.40 50.0 0.0000 25.00 2.4 50
'7/1-10/1/79 .0.44/0.44 0.00/0.00 2.26/ 0.283/ 7.72/ 6.69/ 1.17/ 630.5/ 67.0/ --
26.23/ 0.142/ 3.41 1.480 18.3 8.63 2.86 783.0 85.0 52.00 0.550 10/1-1/1/80 2.86/5.20 0.00/0.00 2.61/ 0.281/ 9.05/ 7.35/ 2.24/ 754.0/ 45.0/ -- 13.19/ 0.053/ 3.38 0.485 23.5 8.07 3.18 782.0 62.0 22.8 0.115
.1/1-4/1/80 7.07/13.10 0.00/0.00 3.20/ 0.224/ 4.36/ 7.32/ 3.19/ 861.5/ 33.0/ 0.010/ 9.59/ 0.084/
5.50 0.460 8.66 8.24 6.70 975.0 44.0 0.012 18.8 0.183 4/1-6/30/80 1.37/2.00 0.0125/ 2.70/ 1.914/ 8.43 1.92/ 2.50/ 841.5/ 47.0/ 0.0995/ 59.52/ 0.035/ 0.150 3.59 9.420 28.3 9.8 4.60 887.0 72.0 0.1080 112.0 9.19 7/1-10/1/80 0.30/0.30 0.0125/ 2.54/ 0.295/ 4.54 7.7/ 1.62/ 1112.0/ 58.0/ 0.079/ 34.56/ OTTEIT 3.30 1.070 -17.4 8.71 2.72 1596.0 75.0 0.122 78.80 0.400 10/1-1/1/81 1.30/1.80 0.00/0.00 2.51/ 0.2313/ 6.09/ 7.62/ 1.83/ 1323.0/ 45.7/ 0.1360/ 16.11/ 0.1336/ ' 2.86 0.6020 16.0 8.66 4.70 1644.0 56.0 0.1360 28.00 0.520 1/1-4/1/81 3.87/6.80 0.00/0.00 2.86/ 0.2225/ 4.12 7.30 3.38/ 1410.2/ 34.0/ 0.0435/ 21.28/ 0.2306/; 4.55 0.6080 10.2 8.36 7.81 2052.5 54.0 0.0720 54.0 0.688-4/1-7/1/81 1.033/1.600 0.00/0.00 2.68/ 0.370/ 2.66/ 7.81/ 1.605/ 961.5 59.2/ 0.00/ 29.75/ 0.129/- 3.18 1.000 6.50 8.46 2.904 1376.0 77.0 0.00 81.4 0.413 7/1-10/1/81 0.563/1.090 0.00/0.00 2.95/ 0.566/ 2.40/ 7.81/ 1.11/ 1899.2/ 60.0/ 0.00/ 36.18/ 0.203/. 4.12 0.994 12.8 8.40 2.24 2199.0 80.0 0.00 65.0 0.685 10/1-12/31/81 3.669/6.50 0.00/0.00 3.02/ 0.2833/ 3.88/ 7.79 2.040/ 1196.0/ 37.0/ 0.00/ 14.86/ 0.1471/ ~ 3.39 0.6140 9.50 8.46 2.92 2061.0 57.0 0.00 29.5 0.5920 1/1/-3/31/82 5.64/6.91 0.00/0.00 2.90/ 0.416/ 4.63/ 6.96/ 3.56/ 785.0 33.0/ -- 11.14/ 0.632/ 3.88 1.180 17.6 6.48 9.47 805.0 53.0 7.120 4/1-6/30/82 1.56/3.11 0.058/ 2.69/ 0.538/ 2.70/ 7.00/ 1.755/ 1427.3/ 43.0/ -- 25.96/ 0.1226/~ 0.200 3.30 0.996 6.60 8.69 2.670 1637.0 79.0 62.50 0.3170 7/1-9/30/82 0.118/0.185 0.00/0.00 2.75/ 0.195/- 3.63/ 6.99/ 1.44/ 1568.33/ 53.0/ 0.00/ 56.1/ 0.1395/
. 3.18 0.92 15.00 8.50 2.06 1945.00 74.0 0.00 94.0 0.323 ~
10/1-12/31/82 1.31/2.50 0.00/0.00 2.92/ 0.2782/ 4.40 7.95 1.1008/ .894.3/ 38.0/ 0.050/ 12.25/ 0.0434/~ 3.30 0.6110 12.04 8.44 1.9600 975.0 53.0 0.050 26.00- 0.1050
- 2) Discharge Point 002 -
10/1/79-1/1/80 4.1/4.1 0.00/0.00 2.30/ 0.413/ 14.2/ 7.78/ 2.03 835.0/ 40.0/ -- 13.7 0.048/ 2.30 0.413 14.2 7.78 2.03 835.0 40.0 13.7 0.048-O
'E.'.'53 l
COLORADO DEPARTMENT OF HEALTH l l Water Quality Control Division
. Rationale - Page 24 PERMIT NUMBER: CO-0001121 APPEND 1% C ; Self-Monitoring Reports (Continued)
- 3) Intake Date (after settling)
]
Parameter Ammonia Non-Filt. Total Tot. Filt. Total Tot Date Nitrogen Residue Phosphorus Residue Iron Tin (ma/1) (ma/1) (ma/1)' (ma/1) (ma/1) (ma/1) i . 1/1-4/79 8.5/- 8.00/ 3.23/ -- -- - 12.0 16.40 6.40 7/1-10/1/79 0.563/ 23.73/ 0.872/ 565.1/ 0.276/ 0.890 55.60 1.490 726.0 0.650 10/1-1/1/80 3.80/ 14.09/ 1.761/ 827.3/ 0.338/ 5.80 22.80 3/010 858.0 0.550 i 1/1-4/1/80 7.10/ 17.66/ 2.55/ 781.2/ 0.272/ 0.0325/ 9.90 116.00 3.61 789.6 0.466 0.0540 ' l 41-630/80 0.1000/ 35.49/ 0.753/ 437.5/ 1.047/ 0.120/
! 0.2000 76.40 1.953 715.6 3.240 0.122 ! 7/1-10/1/80 0.4000/ 29.1/ 0.8102/ 649.7/ 0.2662/ 0.0735/
0.7000 63.2 2.2350 773.2 0'.840 0.1220 10/1-1/1/81 1.60/ 11.17/ 1.011/ 890/ 0.196/ 0.016/ 2.60 24.00 2.770 945 0.656 0.016 l 1/1-4/1/81 6.73/ 11.76/ 2.42/ 809/ 0.33/ 0.0345/ 10.70 22.60 3.33 835 2.32 0.0540 1 4/1-7/1/81 1.10/ 24.8/ 1.19/ 776/ 0.39/ 0.12/ { 1.170 68.4 1.97 802 1.53 0.20 7/1-10/1/81 0.22/ 27.7/0 0.65/ 0.44/ 0.02/ 1104/ . 0.26 59.0 1.34 1178 1.02 0.021 10/1-12/31/81 3.60/ 13.85/ 1.72/ 793/ 0.36/ 0.02/ 6.40 27.60 2.40 800 0.53 0.02 1/1/-3/31/82 5.80f 10.44/ 2.62/ 783/ 0.36/ 6.91 16.00 4.08 796 0.58 4/1-6/30/82 1.70/ 21.2/ 0.98/ 935/ 0.53/ -- 3.73 36.5 2.17 1146 0.91 7/1-9/30/82 0.15/ 36.3/ 0.84/ 759/ 0.915/ 0.12/ 0.19 58.5 2.26 792 1.430 0.20 10/1'12/31/82 1.41/ 12.81/ 0.95/~ 887/ 0.30/ 0.07/ 3.00 24.50 1.92 972 0.62 0.07
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