HomeMy Public PortalAboutExhibit MSD 84L1 - Coldwater Creek Wastewater Treatment FacilitySTATE OF MISSOURI
DEPARTMENT OF NATURAL RESOURCES
MISSOURI CLEAN WATER COMMISSION
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MISSOURI STATE OPERATING PERMIT
In compliance with the Missouri Clean Water Law, (Chaper 644 R.S. Mo. as amended, hereinafler, the Law), and the Federal Water
Pollufron Controi Act (Public Law 92-500, 92" Congress) as amended,
Pemul No.MO-0025160
Owner:Metropoliian SL Louis Sewer District
Address:2350 Market Street, SL Louis, MO 63103
Continuing Authority:Same as above
Address:Same as above
Facility Name:MSD Coldwater Creek Was[ewater Treahnent Facility
Facility Address:13798 Old Halls Fecry Road, Florissant, MO 63034
Legal Description:Sce Page 2
UTM Coodinates:See Page 2
Receiving Stream:See Page 2
Firs[ Classified Stream and ID:See Page 2
USGS Basin Sub-watershed No.:See Page 2
is authorized to discharge from the faciliry described hereiq in accordance with the effluent limitations and monitoring requirements
as se forth herein:
FACILITY DESCRIPTION
See Page 2
This permit authorizes only wastewater discharges under the Missouri Clean Water Law and [he Nationa] Pollutant Discharge
Elimina[ion System; it does not appty to o[her regulated areas. This pertnit may be appealed in accordance with Section 644.05 ].6 of
the Law.
lanuarv 13,2012
F.fiective Dare Sara Parker Pauley, Director, Uepartmen of Natur Resoumes
Januarv 12, 2017
Expiwtion Date lo M as. Direetor, Wacr Pro[eclion Progmm
T- v12, 2 z _o PM_ NPDs
Exhibit MSD 84L1
Page 2 of 13
Permit No. MO-0025160
Outfall #001 POTW SIC #4952
Emergency outfall. Discharge from this outfall is no longer authorized, and shall be subject to 40 CFR 122AI (m) and reported
according to 40 CFR 122.41(m)(3)(i) &(ii).
Outfall #004 POT\V- SIC #4952 Certified "A° Operator Required
Lift sta[ion/primary clarifiers/activated sludge/sludge thickening/sladge pumped [o Bissell Point collec[ion system
Design population cquivalcnt is 400,000.
Design flow is 40 MGD.
Actual flow is 27 MGD.
Design sludge production is 11,200 dry lons/ycar.
Wet weathcr design tlow is 75 MGD hourly, 55 MGD continuous.
Legal Description:Landgrant 1909, St Louis Coanty
UTM Coordinates:X= 741645, Y= 4301628
Recciving Strcam:Missouri River (P)
First Classified Stream and 1D: Missouri River (P) (1604) 303(d) List
USGS Basin Sub-watershed No.: Q 0300200 0804)
Outfall #005 POTW SIC #4952
Stornnvater runoff/no treatment
Actual flow is dependent upon rainfall.
Legal Description:Landgrant 21Q SL Louis County
UTM Coordinates:X= 737268, Y= 4299484
Receiving Stream:Coldwater Creek (C)
First Classified Stream and ID: Coldwater Creek (C) (0170 303(d) List
USGS Basin Sub-watershed No.: (10300200 0803)
Outfall #006 Eliminated
PAGE NUMBER 3 of 13
A. EFFLUENT LIMITATIONS AND MOnITORING ItEQUIREDIENTS
PERMIT NUMBER MO-0025160
The pertnittee is aathorized [o discharge from ou[fall(s) with serial number(s) as specified in the applica[ion fot this permiL The in[eim effluen[
limita[ions shall beeome effeetive upon issuance and remain in efTect until December 31, 2013. Such discharges shall be comrolled, limi[ed and
monitored by the pemiittee as specified below:
OUTFALL NUMIIER AND
InTERIM EFFLUEiT MONITORING REQUIREMENTS
UNITS
LIh11TATIONS
EFFLUENTPARAMETER(S DpILy WGCKLY AONTHLY MEASUREMENT SAMPI.F
MAXIMUM1I AVERAGC AVCRAGC FREQUENCV NPB
U}81 #4
Flow MGD oncc/day 24 hr. total
Carbonaceous Biochcmica] Oxygcn mg/L 40 25 once/weekday 24 hr. composite
Dcmand
Total Suspended Solids mg/L 45 30 once/weekday 24 hr. composite
E. coli (Note 1)00 mL once/week grab
pH Units SU once/month erab
Ammonia as N mglL oncelmonth rab
Oil Grease m/L 15 0 once/month b
MONITORING REPORTS SHALL BE SUBMITTED MONTHLY; THE FIRST ALPORT IS DUE Februarv 28. 2012. THERE SHALL BE NO
DISCHARGE OF FLOATING SOLIDS OR VISIBLL FOAM IN OTHHR THAN TRACB AMOUNTS.
OU7'FALL NUMBER AND
UNITS
U`LY WEEKLY MONTHLY MEASURGMGNT SAMPLE
EFFLUENTPARAMETER(S)MAXIMUM AVF;RAGE AVERAGE PREQUENCY TYPE
Outfall #004
Cyanide, Amenableto Clilorination g/L once/quarter*•*grab
Arsenic, Total Recoverable pg/L once/qusrter*** 24 hr. compositc
Cadmium, Total Recoverablc pg/L 40.5 14.6 once/quarter*** 24 lu. composite
Chromium(III), Total Recoverable pg/L once/quarter*** 24 hr. composite
Chromium(VI), Total Dissolved pg/L once/quarter***grab
Copper, Total Recoverable pg/L once/quarter*** 24 hr. composite
Lead, Total Recoverable g/L oncelquarter**` 24 hr. composite
Nickel, Total Recoverable g/L once/quaner`** 24 hr. composite
Silver, Total Recoverable pg/L 65 24 oce/qarter*** 24 hr. composire
Zinc, Total Recoaerable pg/L once/quarter*** 24 hr. composite
MONITOffiNG REPORTS SHALL BE SUBMITTED OUARTERLY; THE FIRST AEPORT IS DUE April 2fi. 2012. THERfi SHALL BE NO
DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACL• AMOIJNTS.
B. STANDARD CONDITIONS
IN ADDITION TO SPECIFIED CONDITIONS STATED HEREIN,'IH]S PERMIT IS SUBIEC'I SO 7'HE ATTACHED Paris I, II, III
STANDARD COND]TIONS DATED October 1, 1980 and Aueust 15 1994. AND HEKEBY INCORPORATED AS THOUGH FULLY SET
FORTH HEREW.
PAGE NUMBER 4 of 13
A. EFFLUF,NT LIMITATIOVS AND MOtTORING RP;QUIREMENTS
PERMIT NUMBER MO-0025160
The pemiittee is authorized lo discharg Gom oulfall(s) with serial mmber(s) as specified in the application for this penniL The final effluent
limita[ions shall become effeetive on January l, 2014 nnd remain in effeet until expiration of the permit. Such diseharges shall be conirolled, limited
and monitored by the perminee as specified below:
OUTFALL NUMBER AND FI.'AL EFFLUF.NT LIMITATIONS MONITORING REQUIRHMENTS
UMTS
EFFLUENT PARAMETERS DAILY WEtiKLY MONTHLY MHASUREMF.NT SAMPLE
MAXIS7UM AVERAGB AVF.2AGE FRF,QIiF,NCY TYPE
Outfall #004
Flow MGD once/day 24 hr, total
Carbonaceous Biochemical Oxygen mg/L 40 25 oncehveekday 24 hr. composite
Demand
Total Suspended Solids mg/L 45 30 once/wcekday 24 hr. composite
E. coli (Note 1)00 mL 1030 206 once/week grab
pH—Units SU once/month grab
Ammonia as N mg/L once/month grab
Oil Grease mg/L IS 10 oncc/month grab
Total Residual Chbrine (Note 3 for the mg/L 0.142 0.071 once/weckday grab
Month] Avera e limit)0.13 ML
MONITORING REPORTS SHALL BG SUBMITTGD MONTHLY; THE FIRST REPORT IS DUE February 28. 2014 THGRH SHALL BE NO
DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNPS.
OUTFALL NUMDER AND DAILY WEEKLY 10NTHLY MGASUREMENT SAMPLHUNITSypXiM1fUMAVERAGI3AVERAGEFRI° UF,NC\'TYPGLFFLUNTPARAMETER(S)Q
Outfall #004
Cyanide, Amenable to Chlorination g/L once/quarter••*grab
Arsenic, Total Recoverable g/L once/quarter'** 24 hr. composite
Cadmium, Total Recoverable g/L 40.8 14.6 once/quarter*** 24 hr. composite
Chromium(III), Total Recoverable pg/[.once/quarter*` 24 hr, eomposie
Chromium(VI), Total Dissolved pg/L once/quarter***grab
Copper, Total Recoverable g/L once/quaner*** 24 hr. composite
Lead, Total Recoverable pg/L oncc/quaRer*** 24 hr. composite
Nickel, Total Recoverable pg/L once/quarter*+* 24 hr. composite
Silver, Total Recoverable pg/L 65 24 once/quarter*** 24 hr. eomposite
Zinc, Total Recoverable L once/ uarter*** 24 hr. com osite
MONITORING REPORTS SHALL BE SUBMIT7'ED OUARTFRLY; THE FIRST REPORT IS DUE Ap[il 28, 2014 THERH SHALL HE NO
U15CHARGE OF FLOATWG SOLIDS OR VISII3LE FOAM IN OTHER THAN TRACE ADIOUNTS.
B. STANDARD CONDITIONS
IN ADDITION TO SPECIFIED CONDITIONS STATED HEREIN, THIS PERMIT IS SUBIECT TO THE ATTACHED Parts I II III
STANDARD CONDITIONS DATED October I, 1980 and Aueust I5. 1994. AND HEREBY INCORPORATLD AS THOUGH FULLY SET
FORTI l 11 ERF.IN.
PAGE NUMBER 5 of 13
A. EFFLUENT LIMITATIONS AND MONITORINC REQUiRED1ENTS
PERMIT NUMBER MO-0025160
The permiuee is au[horized to discharge from outCall(s) with serial number(s) as speciGed in hc application for this pennit. Thc final effluent
limitations shall become etfective pon issuanee and remain in effect until expiration of the permit. Such dischnrges shall be conrrolled, limited and
monitored by the permittec as specified below:
OUTFALL NUMBGR AND FIAI, EFFI.UENT LIMITATIONS MONITORING REQUIREMENTS
UNITS
EFFLUENT PARAMETER(S)nn.'ieeK.v tion7Hi'nne.su2EUEN'r snMVt.e
IAXIMUM AVERA(iG AVERAGE FRF.QUENCY TYPE
Outfall #004
Whole Efflaent Toxiciry (WET) test Surviva] See Special Condition 13 once/year 24 hr. composi[e
MONITORING REPORTS SHALL BE SUBMITTED ANNIJALLY; TIIE FIRST REPORT IS DUE Januarv 28, 2013.
Outfall #004
Total Toxic Organics (Note 2)mg/L once/year grab
MONITORING REPORTS SHALL BL SUBMITTED ANNUALLY; THE FIRST REPORT IS DUE Januarv 28, 2013.
B. STANDARD CONDITIONS
IN ADDITION TO SPECIFIED CONDITIONS STATEU HEREIN, THIS PERMIT IS SUI3JECT TO THE ATTACHED Parts I, II, I
STANDARD CONDITIONS DATED October 1 1980 and Au¢ust 15. 1994. AND IIEREBY INCORPORATLD AS THOUGII FULLY SET
FORTH HEREIN.
A. EFFi.UENT LIMITATIONS AND MONITORING REQUIREMENTS
The peemittee is aulhorized to discharge from uutfall(s) wi[h serial number(s) as spuifiecl in lhe application for this pertniL The final efFlueN
limilations shall become eftec[ive upon issuance and remain in effect until expiration of ihe permiL Such dischxrges shall be controlled. limited and
monitored by [he pennittee as specified below:
OUTFALL NiJMB[R AND FINAL EFFLUENT LIMITATIO\S MONITORING REQUIREMENTS
UNITS
GFFLUGNT PARAMETER(S pqp,y WEEKI.Y 1f0\THLY MF.ASURfiICrT SAYIPLE
MAYI.NU1 AVERAGF: A\'EMGE FILEQUENCtl TYPE
OuCfall #005
Flow MGD once/quarter*** 24 hr. estimate
Biochemical Oxygen Demand mg/L once/quarter***grab
pH—Units SU once/quarter***grab
Chloride mg/L once/quarter`**grab
Total Nitrogen as N mg/L once/quaRer***grab
Total Phos horus as P m/L once/ uarter***rab
MONITORING REPORTS SHALL RE SUHMITTED OUARTERLY; TIIE FIRST RIiPORT IS DUE April 28 2012. TLIERE SHALL RE NO
DISCHARGE OF FLOATWG SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS.
B. STANDARD CONDITIONS
IN ADDITION TO SPECIFIFD CONDITIONS STATED HEREIN. THIS PERMIT IS SUBIFCT TO THF ATTACHED Part 1 STANDARD
CONDITIONS DATED October I 198Q AND HERFRY INCORPORATED AS TIIOUGFI FULLY SET PORI'H HEREIN.
Monitoring requirement only.
pH is measured in pH units and is not to be averaged. The pH is limited to thc range of 6.5-9.0 pH uni[s.
Sample once per quaner. See table below, in Part C, for quanedy sampling sehedule.
Page 6 of 13
Permit No. iY10-0025] fi0
A. EFFLUENT LIMITATIONS AND MONITORING REOUIREMENTS (continued)
Note I- Final limitations and monitoring requirements for E. coli are applicable only during the recreational season from April I
through October 31. The Monthly Average Limit for E. coli is expressed as a geometric mean. The Weekly Average for E.
coli will be expressed as a geometric mean if more Ihan one (1) sample is collected during a calendar week (Sunday through
Saturday).
Notc 2 Ncxt page.
Note 3- This permi contains a Total Residual Chlorine (TRC) limit.
a) This efTluem limit is below the minimum quantification level (ML) uf the most wmmon and practical EPA approved CLTRC
methods. The depanment has determined the current acceptable ML for rotal residual chlorinc to bc 0.13 mg/L when using
the DPD Colorimetric Method #4500 CL G, from Standard Methods for the Examination of Waters ad N'astewatcr. The
permittee will conduc[ analyses in accordance with this method, or equivalent, and report aemal analytical vales. Measured
values greater dian or equal to the minimum quantification level of 0.13 mg/L wil] be considered violations of the permit and
values less than the minimum quatificaion level of 0.13 mg/L will be considered to be in compliance with the permit
limitation. The minimum quantifica[ion level does not authorize [he discharge of chlorine in excess of the effluent limits
stated in [he permit.
b) Disinfection is reguired year-round unless thc permit specitically states that "Final limitations and moniroring requiremen[s
Cor F. Coli are applicable only during the recrea[ional season from April 1 throagh October 31." If your permit does not
require disinfection during the non-recreational months, do no chlorinate in those months.
c) Do nol chemically dechlorinate if it is not needed to mee[ the limits in your permit.
d) If no chlorinc was used in a given sampling period, an actual anaiysis is ool necessary. Simply report as "0 mg/L" TRC.
C. INFLUENT MONITORING REQUIREMENTS
I'he facilily is required to meet a removal efficiency of 85°/ a more as a mon[hly averave. The monioring requiremen[s shall beeome effective upon
issuance and remain in effect until expiraion of he pertniL To detemiine removal efficiencies, the influent was[ewater shall be monitored by the
pemiittee as specified below:
SAMPLING LOCATION AND
MONITORING REQUIREMENTS
PARAMETER(S)UNITS
MHASURF.MF.NT FREQUENCY SAMPLETS'PE
nfluent
Carbonaceous Biochemical Oxygen mg/L once/quarter**•*24 hr. composite
Demand
Total Sus ended Solids m/L once/ uarter****24 hr. com osite
MON[TORI'G REPORTS SHALL RE SORNIITTED QUARTERLY; TIIE FIRST RPORT 1S DUEApri] 28. 2p12,
C. INFLUENT MONITORING REOUIREMENTS (continaed)
Scc tablc bclow for quaztedy sampling.
Sam le dischar e at ]east once for the months of: Report is duc:
lanuary, February, March (Ist Quarter)Apri] 28
April, May, Jone (2nd Quarter)July 28
July, August, September (3rd Quaner)Oc[ober 28
October, November, Deceinber (4th uarter January 23
Page 7 of 13
Pertnit No. MO-0025160
Total Tosic Organics (Note 2)
Acenaphthene 4-chlorophenylphenylether
Acrolein 4-bromophenyl phenyl ether
Acryloni[rilc Bis (2-chloroisopropyl) e[her
Benzene Bis (2-chloroethoxy) methane
Benzidine Methylene Chloride (dichloromethae)
Carbon Tetrachloride (tetrachloromethane)Methyl Chloride (chloromethane)
Chlorobenzene Methyl bromide (bromomethane)
1,2,4-ICichlorobenzene Bromofonn (tribromomethane)
Hexachlorobenzene Dichlorobromomethane
1,2-dichloroethane Chlorodibromemethane
1,1,1-trichloroethane Hexachlorobutadiene
Hexachlorcehane Hexachlorocyclopentadiene
1,1-dichloroethane Isophorone
1, I ,2-tnchloroethane Naphthalene
1,1,2,2-tetrachloroethane Nitrobenzene
Chloroethane 2-nitrophenol
Bis (2-chloroetliyl) ether 4-nihoplieno]
2-chloroethyl vinyl e[her 2,4-dinitrophenol
N-nitrosodi-n-propylamine 4,6-dintro-o-creso]
Pentadilorophenol N-nitrosodimethylamine
Phenol N-nitrosodiphenylaminc
Bis (2-ethylhexyl) phthalate Phenanthrene
Butyl benzyl phthalate 1,2,5,6-dibenzanthracene (dibenzo(a,h)anthraecne)
Di-n-buryl phthalate Indeno Q,2,3-cd) pyree
2,3-o-phenylcnc pyrcnc)
Di-n-ocryl phthalate Pyrene
Diethyl phthalate Tetrachloroethylee
Dimethyl phthalate Tolucnc
1,2-benzanthracene (benzo(a)athracene)Trichlomethylec
Benzo(a)pyiene (3,4-benzopyene)Vinyl Chloride (chloroethylene)
3,4-benzofluoranthene (benm(b)fluoranthene)Aldrin
11,12-benzoFluoranthene(benzo(k)fluoranthene)Dieldrin
Chrysene Chlordane (technical mixture and metabolites)
Anthracene 4,4-DDT
1,12-benzoperylene (benzo(ghi)perylene)4,4-DDE (p,p-DDX)
Fluorene 4,4-DDD (p,p-TDE)
2-chloronaphthalene Alpha-endosulfan
2,4,6-trichlorophenol Beta-endosulfan
Parachloromea cresol Endosulfan sulfae
Chloroform (trichloromethane)Endrin
2-chlorophenol Endrin aldehyde
1,2-dichlorobenzene Heptachlor
1,3-dichlorobenzene Heptachlorepoxide(BHC hexachlorocyclohexane)
1,4-dichorobenzene Alpha-BHC
3,3-dichlorobenzidine Beta-BI-IC
1, I-dichloroe[hylene Gamma-BHC
1,2-trans-dichloroethylene Del[a-BHC (PCB polychlorinated biphenyls)
2,4-dichlorophenol PCB-1242 (Arochlor 1242)
1,2-dichloropropane Q,3-dichloropropane)PCB-1254 (Arochlor 1254)
2,4-dimethylphenol PCB-1221 (Arochlor 1221)
2,4-dinitrotoluene PCB-1232 (Arochlor 1232)
2,6-dinitrotoluene PCB-I248 (Arochlar 1248)
1,2-diphenylhydrazinc PCB-1260 (Arochlor 1260)
Ethylbenzene PCB-1016 (Arochlor 1016)
Fluoranthene Toxaphene
Page 8 of 13
Permit No. MO-0025160
D. SPECIAL CONDITIONS
1. This,pemut may be reopened and modified, or altematively revoked and reissued, to:
a) Comply with any applicable effluent standard or limitation issued or approved under Sections 301(b)(2)(C) and (D),
304(b)(2), and 307(a) (2) o(the Clean Wntcr Act, if Ihc eftlucnt standard or limitation so issued or approved:
1) contains different conditions or is othenvise more stringent than any effluent limitation in the penit; or
2) controls any pollutant not limitcd in thc permit.
b) Incorporate new or modificd efflucn limitations or other conditions, if the result of a waste load allocation study, toxicity
test or other information indicates changes are necessary to assure compliance with Missouri's Water Quality Standards.
c) Incorporate new or modified efflucnt limitations or other conditios if, as the result of a watershed anatysis, a Total
Maximum Daily Load (TMDL) limitation is developed for the receiving waters which are currently included in Missouri's
list of waters of the state not fully aclicving the state's water qualiry stadards, also called the 303(d) list.
The permit as modified or reissced ander this paragraph shall also contain ay other requirements of ihe Clean Water Act then
applicable.
2. All outfalls must be clearly marked in the field.
3. Changes in Discharges of Toxic Substances
The pemiittee shall notify [he Director as soon as it knows or has reason [o believe:
a) That any activity has occurred or will occur whieh would result in the discharge of any toxic polla[ant which is not limited
in the pertnit, if ihat dischage will excced the highest of the following "notification levels:"
Q) One hundred micrograms per li[er (]00 µg/L);
2) Two hundred micrograms per liter (200 µg/L) for acrolein and acrylonitrile; five hundred micrograms per liter (500
g/L) for 2,5 dinitrophenol and for 2-methyl-4, 6-dinitrophenol; and one milligram per liter (1 mg/L) for antimony;
3) Fivc (5) [imes the maximum concentration value reported for the pollutant in the permit application;
4) The leve] established in Pari A of Ihe permit by the Director.
b) That [hey have begun or expect to begin to use or manufacture as an itemiediate or final product or byproduct ay toxic
pollutant, which was not reported in the permit application.
4. Report as no-discharge when a discharge does not occur during the repod period.
5. Water Quality Standards
a) Discharges to waters of the state shal] not causc a violation of water qualiry standards tule under 10 CSR 20-7.031,
including both specific and general criteria.
b) General Criteria. Tlic following genera] watcr quality criteria shal] bc applicable to all waters of the state at all times
including mixing zones. No wa[er contaminant, by itself or in combination with o[her substances, shall prevent the waters
of the state from meeting the follo}ving conditions:
I) Waters shall be free from substances in sufficient amounts to cause the fonnalion ofputrescent, unsighdy or harmful
bottom deposits or prevent ful] maintenance of beneficial uses;
2) Waters shall be free from oil, scum and Floating debris in sufficient amounts o be unsightly or prevent full
maintenance of beneficial uses;
3) Waters slull be frce fmm substances in sufficient amounts to cause unsightly color or htrbidity, offensive odor or
prevent full mainfenance of beneficial uses;
4) Waters shall ba free from substances or couditions in sufficient amounts to resalt in toxicity to haman, animal or
aquatic ]ife;
5) There shal] be no significant human health hazard from incidental contact with the wa'ter;
6) There shall be no acu[e toxicity to livestock or wildlife watering;
7) Waters shall be free from physical, chemical or hydrologic changes that would impair the natural biological
community;
8) Waters shall be free from used tires, car bodies, appliances, demolition debris, used vehicles or equipment and solid
waste as defined in Missouri's Solid Waste Law, section 26020Q RSMq except as the use of such materials is
specifically permi[ted pursuan[ [o section 260.200-260247.
6. The permittee shall comply with any appliwble reqnirements fisted in 0 CSR 20-9, unless the facility has received written
notification that ihe Department has approved a modification to ihe requirements. The monitoring frequencies contained in this
permit shall ot be cons[rued by the permittee as a modification of Ihe moniroring frequencies ]isted in 10 CSR 20-9. If a
modification of the monioring frequencies listed in 10 CSR 20-9 is ceeded, the permitee shall submit a written request to the
department for review and, if deemed necessary, approval.
Pagc 9 of 13
Pertnit No. MO-0025160
D. SPECIAL CONDITIONS (wntinuedl
Z The permittee shell implement and enforce its approved pretreatment program in accordance with the requiremets of 40 CFR
Part 403. The approved pretreatment program is hereby incorporated by reference.
The permittee shall submit to the Department on or before September 30 of each year a report briefly describing itspretrea[ment
activities during the previous calendar yeac At a minimum, the report shall include the following:
a) An updated list of the Pennittee's Industrial Users, inclading their names and addresses, or a list of deletions and additions
keyed to a previously submitted list. 7he Pemiittcc shall provide a brief explanation of cach deletion. This list shall
identify which Industria] Users are subject to eategorieal pretreatment Standards and specify which Standards are applicablc
to eacl Induslrial User. The list shall indicate which Industrial Users are subject to local standards that are more stringent
than the categorical Pretreahnent Standards. The Permittee shall also ]ist the Industrial Users that are subject only to ]ocal
Requirements;
b) A summary of the status of Indus7ial User compliance over the reporting period;
c) A sammary of compliance and enforcement activities (including inspections) conducted by the Permit[ee during the
reporting period; and
d) Any other relevant infomiation reqested by the Department.
8. Sewer Extension Authority
a) The Department has approved the Sewer Extension Program for MSD to regulate and approve construction of sanitary
sewers that are tributary to diis wastewater treatment plant.
b) The approva] of the Sewer Extension Program may be modified or revoked by the Department if the scwagc collection,
transportation, and receiving treatment faciliry reach heir respective design capacity, or if ihe Departmen detennines that
this program is causing or comributing to chronic non-compliance of the receiving treatmcnt facility, or if the permittee fails
to follow the terms and conditions of the submitted and approved program.
c) The Sewer Extension Program Speeial Condition may be reopened and modified and reissued, or altematively revoked to
incotporate new or modified conditions to the sewer construction permit authoriry, if infomation or regulation or statote
indicates changes are necessary to assure compliance with Missouri's Clean Water Law and associated regulatios.
d) If item b or item e of ihe Sewer Extension Progrxm ocwrs, the pemittee will be notified to any modification to this
operaing permit.
e) The Permittee, as part of their Sewcr Extension Program, shall submit an acmual report Janoary 28'" of each year, to the
Missouri Department of Namral Resources' St. Louis Regional Office. The report must provide the following: 1) lis[ of the
name of the projeets approved, and 2) the length of sewers and force mains and the capacity of lifr stations construeted
under the seer extension program. A summary of ro[al flo" at the treatment faciliry shall be included. Detailed project
information and data including design flows and inspection records shall be available for review upon request.
The Sewer Extension Authority is valid the len€di of this operating penniL Upon renewa] of the permit, the Sewer
Extension Authority for MSD- SL Louis sill be rccvalua[ed.
9. Pernuttee sUall use ile combined primary and secondary treacment capacities in a way Ihat maximizes treatment This approval
does not relicve ihe pennittee from meeting 85% remova] for CBOD or TSS. In additioq the permittee should continuc to
implement and refine a program that minimizes the capaeity, management, operation, and maintenance (CMOM) of the collection
system to assure the system is operated in a way that miimizes peak flows duriog wet weather events. The permittee shal]
adhere [o the fcdcral Conscnt Decree No. 4:07-CV-I 120(CE]) which has bcen lodged with the court on August 4, 20ll.
10. All paint, solvents, petmleum products and petroleum waste products (except fuels), and storage containers (such as drums, cans,
or caROns) shall be stored so that tliese materials are not exposed ro srorm watec Spill preven[ion, control, and/or management
shall be pmvidcd sufficicnt to prevent any spil Is oC these pollutants from ctering a water of the state. Any containmeut system
used to implement this requirement slall be constructed of materials compatible with the substances contained and shall also
prevent the contamination of groundwater.
I 1. Substances, regulated by federal ]aw under the Resource Conservation and Recovery Aet (RCRA) and Compehensive
Enviconmeneal Response, Compensation, and Liability Act (CERCLA), that are transportcd, stored, or used for maintenance,
cleaning or repair, shall be managed aceording to RCRA and CERCLA.
Page 10 of 13
Permit No. MO-0025160
D. SPECIAL CONDITIONS (continucdl
12. An annual report regarding the sludge storage lagoons sliall be submitted by January 28 of each year to the Missouri Department
of Nature Resources St. Louis Regionai Office. The four inactive sludge storage lagoons contain an estimated 481,000 cubic
yards of sludge. Included in the report shall be a summary of aIl maintenance ac[ivities at Uie lagoons and any analysis results of
monitoring perfornied on the sludge or moni[oring wells. The report shall summarize all actions taken to reduce the nitrogen
levels of the sludge including estimates of the amount of nitro¢en reduced during the repori period and the total amount of
remaining nitrogen.
13. Wlolc Effluent Toxicit WET Tesl shall be conducted as follows:
SUMMARY OF ACUTE WET TESTING FOR THIS PERMIT
OU7FALL AEC FREQUENCY SAMPLE TYPS MONTH
004 13%once/ ear 24 hr. com osite Janua
Dilution Series
52%26%13%6.5% 325"/0 Control) 100%upstream, Control) 100%Lab Water,
effluent efFluent cffluent effluent effluent if available also called synthetic water
a) Test Schedule and Follow-Up Requirements
I) Perform a MULTIPLE-dilution acute WET test in the mondis and at the frequency specified above. For tests which
are successfully passed, submit test results using ihe Department's WET test report form #MO-780-1899 along with
complete copics of the test reports as received ftom the laboratory, including copies of chain-of-custody fonns
wiliin 30 calendar days of availability to the WATER PROTECTION PROGRAM, P.O. Box 176, Jcfferson City,
MO 65102. If the effluent passes the test, do not repeat the test untii Ihe next test period.
a) For discharge+ of stormwater, samples shall be collected within three hours &om when discharge first occurs.
b) Samples submitted for analysis of stormwater discharges shall be collected as a grab.
c) For discharges of non-sonnwater, samples slall be collccted only wlcu prccipitation has not occarred for a
period uf fony-eight hours prior to sample collection. In no event shall sample collection occur
simultaneoasly with [he occarrence of precipitation excepting for storniwater samples.
d) A twenty-four hour composite sample shall be submitted for aalysis of non-stormwater discharges.
e) Upstream receiving water samples, where required, shall be collected upstream trom any influence of the
effluent where downstream flow is clearly evident.
t) Samples sabmitted for analysis of upsReam receiving water may be collected as either a grab or twenty-four-
hour compositc as appropriatc to thc naturc of thc discharge.
g) Chemical and physical analysis of the upstream control and effluent sample shall occur immediately upon
being received by he laboratory, prior to any manipulaion of the efflcot sample beyond preservation
methods consistent with federal guidelines for WET testing that are required to stabilize ihe sample diiring
shipping.
h) Any and all chemical or physical analysis of the effluent sample perfomied in conjunction with the WET test
shall be performed at ihe 100% Effluent concentration in addition to analyses performed upon any other
effluent concentration.
i) All chemical analyses included in the Missouri Department of Natural Resources WET est repori forn
MO-780-1899 shall be performed and results shall be recorded in the appropriate ficld of thc report fomi.
j) Where flow-weighted composite sample is required for analysis. the saroples shall be composited at the
laboratory where the test is to be perfomed.
k) Where in stream testig is required downstream from the discharge, sample colleetion shall oeeur
immediately below ihe established Zone of Initial Dilutioo in conjunction with or inmiediatcly following a
release or discharge.
I) Samples submihed for analysis of do«nstream receiving water may bc collectcd as eithcr a grab or twenty-
four-hor composite as appropriate to [he nature of the discharge.
m) All instrcam samples, including downstream samples; shall bc tested for roxicity at the 100% concentration
in addiion to any otUer assigned AEC for in-stream samples.
2) All failing test results along with complete eopies of die test reports as received from the laboratory, INCLUDING
THOSE TESTS CONDpCTED iJNDER CONDITION (3) BELOW, shall be reported to the WATER
PROTECTION PROGRAM, P.O. Box 176, lefferson City, MO 65102 withio l4 calendar days of the availabiliry of
the results.
Pagc l of 13
Permi[ No. MO-0025160
D. SPECIAL CONDITIONS (continued)
13. Whole Effluent Toxicity (WET) Test (continued):
3) If the eftlaen[ fails the test, a multiple dilution test shall be performed for BOTII test species within 30 calendar
days and biweekly thereafier (for stom water, tests shall be performed on the nex[ and subsequent storm water
discharges as they occur, but not less than 7 days apart) until one of the following conditions are met:
a) THREE CONSECUTIVE MULTIPLE-DILUTION TESTS PASS. No further tests need to be performed
until next regularly scheduled test period.
b) A TOTAL OF THREE MULTIPLE-DILUTION TESTS FAIL.
4) The permittee shall submit a summary of all test results for the test series along with complete copies of the cest
repors as received from the laboratory to the WATER PROTECTION PROGRAM, P.O. Box 176, JeCferson City,
MO 65102 wi[hin 14 calendar days of the [hird failed test.
5) Additionally, the following shall apply upon failure of Qie ihird MULTIPLE DILUTION tesr. A toxicity
identification ealuation (TIE) or toxicity rednction evaluatio (TRE) is automatically triggered. The pertnittee shall
contact THE WATER PROTECTION PROGRAM within 14 calcndar days from availability of the test resulls to
ascertain as to whether a TIG or TR8 is appropriate. The permittee shall submit a plan for conducting a TlL or TRE
to the WATER PROTECTION PROGRAM within 60 wlendar days of the date of DNR's direction to perform
either a'IIE or TRE. This plan must be approved by DNR before the TIE or TRE is begun. A schedule for
comple[ine the TIE or TRE shall be established in the plan approval.
6) Upon DNR's approval, Nie TIEITRE schedule may be modified if toxiciry is intermittent during the TIE/TRE
investigations. A revised WET test schedule may be estabiished by DNR for this period.
7) If a previously completed TIE has clearly identified the cause of toxicity, addi[ional TIEs will not be rcquired as
long as effluent characteristics remain essentially unchanged and the permittee is proceeding according to a DNR
approved schedule to complete a TRE and reduce toxicity. Regularly scheduled WET cesting as required in the
pennit, without die follow-up requiremenis, will be required during this period.
b) PASS/FAIL procedure and eftluen[ limitations:
1) To pass a multiple-dilulion test
a) For facilities with a computed percent effluent at ihe edge of thc zonc of initial dilution, Allowable Effluent
Concenration (AEC) OF 30% OR LESS, the AEC inust be Icss than Ihrcc-tenths (03) of the LCso
concentration for the most sensitive of the test organisms; OR,
b) For facilitics wih an AEC grcater ihan 30%, the LC50 concentration must be greater Ihan 100%; AND,
c) All effluent concentrations equal to or Icss than thc AEC must be nontoxic. Mortality observed in all effluent
concentrations equal to or less than the AEC shall not be significantly different (at the 95% confidence level;
p= 0.05) than that observed in the upstream receiving-wa[er control sample. Where apstream reeeiving
water is not available mortaliry observed in [he AEC test concentration shall not be significandy different (nt
the 95% confidence level; p= 0.05) than that observed in the laboatory control. The appropriate statistical
tests of significance shall be consistent with the most wrrent edition of METI-IODS FOR MEASURING
THE ACUTE TOXICITY OF EFFLUENTS AND RECHIVING WATtiRS'CO FRESHN'ATER AND
MARINE ORGANISMS or other federal guidelines as appropriate or required.
c) Test Conditions
1) Test Type: Acute Static non-renewal
2) All lests, including repeal tests for previoas Cailures, shall include both test species listed below.
3) Test species: Ceriodaphnia dubia and Pimephales promelas (fathead minnow). Organisms used in WET resting shal]
come from cultures reared for the purpose of condacting toxieiry tests and cultured in a manner consistent ith the
most current USEPA guidelines. All test animals shall bc cultured as described in the most current edition of
Methods for Measurine the Acute Toxicitv of Effluents and Receivine Waters to Freshwater and Marine Or an.
4) Test period: 48 hours at the "Allowable Effluent Concentratiod' (AEC) specified above.
5) Upstream receiving stream water shall be used as dilution watec If upstream water is unavailable or if moRality in
the upstream water exceeds 10%, "reconstituted" water will be used as dilution water. Procedures for generating
reconstituted water will be supplied by the MDNR upon request.
6) Unless othenvise specified above, multiple-dilation tests will be run with:
a) 100%, 50%, 25%, 12.5%, and 6.25% efFluent, unless tle AEC is less than 25% effluent, in which case
dilutions will be 4 times the AEC, two times the AEC, AEC, 1/2 AEC and 1/4 AEC;
b) 100"/o receiving-sheam water (if available), colleeted upstream of the outfall at a point beyond any influence
of thc efflucnt and
c) Reconstituted water.
7) If reconstituted-water control mortaliry for a est species exceeds 0%, ihe entire test will be rerun.
8) If upstream control mortality exceeds 10%, the entire test will be rerun using reconstituted water as the dilutant.
Pagc 12 of l3
Permit No. MO-0025160
SUMMARY OF TEST METHODOLOGY FOR ACUTE WHOLE-EPFLUENT TOXICITY TESTS
R'hole-effluent-toxiciry tes required in NPDES pernii[s shall use the followig test conditions when perfomiing single or multiple
dilution methods. Any future changes in methodology will bc supplicd to the permittee by the Missouri Department of Nahiral
Resources (MDNR). Unlcss more siringent methods are spccificd by the DNR, the procedures shall be cousistenl with the most
current edition of Mcthods for Mcasurin¢ dc Acutc Toxiciry of Effluents and Receivine Waters to Freshwater and Marine Or an,
Tes conditions for Ccriodaphnia dubia:
Test duration:48 h
Temperaturc:25 1°C Temperatures shall not deviatc by more than 3°C during
Ihe test.
Leght Quality:Ambient laborarory illumination
Photoperiod:16 h light, 8 h dark
Size of test vessel:30 mL (mininwm)
Volume of test solation:15 mL (minimum)
Agc of test organisms:24 h old
No. o(animalshcst vcssd:5
No. of replicateslconcentration:4
No. of organisms/concentration:20 (minimum)
Feeding regime:None (feed prior to tcst)
Acration:None
Dilution water:Upstream receiving water; if no upstream flow, synthetic water
modified ro retlect efFluent hardness.
Endpoint:Pass/Fail (Statistically significant Mortaliry when compared io
upstream receiving water contro( or synthetic control if upstream
waier was not avaitable at p 0.05)
Test acceptability criteiion:90% or greater survival in controls
Test conditios for Pimephales promelas:
Test duration:48 h
Temperamre:25 ±]°C Temperamres shall not deviate by more [han 3°C during
the test.
Light Quali Ambient laboratory illamination
Plotoperiod:16 h light/ 8 h dark
Size of test vessel:250 mL (minimum)
Volume of test solution:200 mL (minimum)
Age of test organisms:I-14 days (all same age)
No. of animalshest vessel:10
No. ofreplicates/concentation:4(miimum) single dilution method
2 (mininmm) multiple dilv[ion me[hod
No. of organisms/concenhation:40 (minimmn) single dilution method
20 (minimum) uml[iple dilution method
Feeding re¢imc:None (feed rior to rest)
Aeration:None, unless DO concentration falls below 4.0 mg/L; rate should
not exceed 100 bubbles/min.
Dilution watcr:Upstream receiving water; if no upstream flow, synthelic waler
modified to reflect effluent hardness.
Gndpoint Pass/Fail (Statistically significant Mortaliry whcn compared to
upstream reeeiving water control or syntheic control if upstream
water was not availablc at p< 0.05)
Test Acceptabiliry critcrion:90°/o or grealer survival in conirols
Page 13 of 13
Permit No. MO-0025160
E. SCHEDLTLE OF COMPLIANCE —E coli.
1. The pennittee must attain compliance with die final effluent limits as soon as possible, but no later than December 31, 2013.
2. Within one year of issuance of this pemiit, [he perniittee shall report progress made in attaining compliance with [he final
effluent limits.
3. Within nvo years of issuance of this perniit, the permittee shall submi[ a report detailing progress made in attaining
compliance wilh the final ef0uent limits.
4. If the permittee fails to meet any of the interim dates above, the pemiittee shall notify the Department in writing of the reason
for non compliance no later than 14 days following each interim date.
5. Upon completion of construction, the pemittee shall submit a Starement of Work Complete signed by lhe owner and a
Professional Engineer that is registered in the sta[e of Missouri. (Only required if construc[ion is required)
MSD —Coldwater Creek WVJTF
Page 1
Fact Sheet
Missouri Department of Natural Resources
FnC'r SHr:'r
FOR TI1E PURPOSE OF REnEWAL
OF
A10-0025160
MSD COLDH'ATER CREEK WASTE1'ATER TREATMENT FACILITY
The Federal Water Pollution Control Act ("Clean Water AcP' Section 402 Public Law 92-500 as amended) established the Nationa]
Polltion Discharge Elimination System (NPDES) penuit program. This program regulates the discharge of pollutanis from point
sourocs into the waters of the United States, and tle release of stom water from certain point sources. All such discharges are
unlawful witlout a pemit (Section 301 of the "Clean Waler AcC'). Afler a permit is obtained, a discharge not in compliance with all
pennit tcnns and conditions is unlawful. Missouri State Operating Pemits (MSOPs) are issued by the Director of the Missouri
Department of Natural Resources (Department) nder an approved program, operating in accordance with federal and state laws
Fedcra] "Claan Water Act" and "Missouri Clean Water Law" Section 644 as amedcd). MSOPs arc issued for a period of five (5)
years unless otherwise specified.
As per [40 CFR Part 124.8(a)] and []0 CSR 20-6.020(I)2.] a Factsheet shall be prepared to give pertinet infonnation regarding Ihe
applicable regulations, rationale for the development of effluent limitations and conditions, and [he public participation process for the
Missouri State Operating Pemiil (operaling pennit) listed below.
A Factsheet is not an enforceable pari of an operating permit.
This Factshcct is for a Major Minor Industrial Facility Variance
Master Genera] Pennit Gcncra] Pcmit Covercd Facility and/or pennit with widespread public interest
Part I Facilitv Information
Faciliry Type:POTW
Faciliry SIC Code(s): 4952
Facilitv Descrin[ion:
The MSD Coldwater Creck WWTF is a 40 MGD activated sludge faciliry located in Florissant, SL Louis Coanry, MO. Unireated
tastewater enters the faciliry through the headvorks, where it is first subjected to screening by coarse screens. Wastewater is then
pumped to Ihe fine screens before it enters one (1) of foar (4) primary clarifiers. From the primary clariliers, flow is dirceted to one
I) of six (6) aeration basins. Flow is Ihen transporied to one Q) of seven (7) final clarifiers. Flow is then directed through a basin
previousty used for chlorine contact) before treated efiluent is discharged to the Missouri River through Outfall #004. Primary sludge
is degritted and thickened. Waste Activated Sludge is also thickened. All sludgc is the sent to one (I) of six (4) primary and one (1)
of two (2) secondary digesters before being sent via force main to the Bissell Point W WTP for incincration.
Outfall 001 serves as an emcrgency outfall to Coldwater Creek. It operates only under the circumstance of failure of Outfall #004.
The applicant indicaes hat daring wet wcather, some flow is diverted arotmd secondary Ireatmenl and recombined wili flows prior to
dischargc through Outfall #004. lnvcstigation is undcrway to deaelop feasible wet weather peak flow managcment altcmativcs. See
discussion beloi.
OutPall #005 is a stormvater outfall that discharges ro Coldwater Creek from lhe southwest portion of the site. Water passing through
this outfall is not subject to treatment. Water that previously discharged through an additional sonnwater outfall (#006) has been
rerouted to diseharee through Outfall #005 or a s[omi sewer which discharges offsite.
This facility was upgraded in 2008 to effectively treat wet weather related peak flows. The facility was expanded to provide
secondary treatment ro a continuous wet weather ilow of'S5 MGD_ Additionally, it can provide secondary trcatment to a flow of 75
MGD for short periods. The new Cacility is designed to combine primary and secondary treatmenl capacities in a way that maximizes
tceatment. Operating the facility in tliis manner is consis[ent with his operating permiL However, in the federal Consent Decree, a
Sanitary Sewer Overflow Control Master Plan is de to be submitted to the EPA on Dcccmber 31, 2013. In the Master Plan, MSD
will include remedial measures tu address capaciry limitations and to eliminate bypassing at tbe trealmet plant.
MSD Coldwater Creek W WTF
Page 2
Fact Sheet
Have any changes occurred at this facility or in the receiving water body that effects effluent limit dcrivation?
Yes; Outfalls #001 and 006 will be eliminated from efflucnt limitations. BMP implcmcntation since the previous pemiit will
result in chanees to limits for Outfall 005.
Application Date:06/22/10
ExpirationDate:2/29/10
Last Inspection:0/07/09 In Compliance Non-Compliance
OUTFALL S TABLE:
OUTFALL
DESIGNFLOW
TR8ATM8NTLEVGL EFFLUENTTYPE
DISTANCETO
CFS CLASSIFIED SEGMENT MI
004 62 Secondary Domestic 0
005 Variable None Stomiwater 0
Outfall #004 Main Facility Outfal]
Legal Descriptioo: Landgrant 1909, St. Lois County
UTM Coordinates: X= 741645, Y= 4301628
Receiving Stream: Missouri River (P)
First Classified Stream and ID: Missouri River (P) (1604)
USGS Basin Sub-watershed No.: (10300200 180003)
Outfall #005 Siormwater Outfall
Legal Description: Landgrant 210, St. Louis Couny
UTM Coordinates: X= 737268, Y= 4299484
Receiving Stream: Coldwater Creek (C)
First Classified Stream and ID: Coldwater Creek (C) (01706)
USGS Basin Sub-watershed No.: Q0300200 180003)
Receiving Water Bodds Water Oualitv Faciliry Pedomiance Iiistorv:
The Missouri River is a class P stream with designated uses of aquatic life, livestock and wildlife watering, irrigation, secondary
contact recreatioq boating drinking water supply and indusViaL The sec[ion of the Missouti River (WBID 1604) receiving discharge
from the facility has been included on the Missouri 303(d) list of impaired waterways since 2006, and is included on the proposcd
2010 Missouri 303(d) List. The pollutant of concem is identitied as bacteria from unknown sources. There is currently no approved
TMDL for bacteria in the Missouri Rivcr. The facility is a potential soorce of bacteria. However, in-stream monitoring is not
necessary at Ihis time, as the facility is subject to E. co/i effluent limitations intended to be protective of receiving stream water
quality.
Coldwater Creek is a class C, Meaopolitan No-Discharge stream with designated uses of aquatic life, livestock and wildlife wateriog
industrial and boating. Coldwater Creek is included on the 2008 Missoari 303(d) List of impaired waterways, as well as the proposed
ZO10 303(d) List Tle pollutants of concern are bacteria and chloride from urban non-point sources and low dissolved oxygen from
milmown sources. Although uo TMDL currently exists for Coldwater Creek, TMDL development for bacteria and chloride is
scheduled for 2011. TMDL development Cor low dissolved oxygen is scleduled f'or 2014. Additional monitoring of efFluent from
stonmvater outfalls may be necessary to detemine if stormwater runoff from the facility is significantly contributing to the
impairmen[.
Prior to the previous pemiit period, isolated, minor violations of CBOD, TSS and oil erease effluen[ limi[a[ions are indicated on [he
WQRS. The pemittee has indicated that at Outfall #004, TSS excecded weckly average effluent limits during the weeks of 5-I 1 and
12-18 February 2006, the week of 29 April 5 May 2007, the week of 30 March-5 April 2008 and the week of 18-14 February 2009.
TSS monthly average effluent limits were exceeded for the monihs of February 2006 and March 2008.
Effluent from Outfall #005 violated pH limits on 9 June 2005. Settleable Solids exceeded daily maximum effluent limits on 18
October 2007 and 23 October 2008. Setticable solids exceedcd montlily average effluent limits durig the months oCOctober 2007
and Ocrober 2008. Oi1 and grease effluent limits were violated for daily maximum on 12 January 2007 and monthly average for the
month of January 2007. Although the outfall is no longer included in the pemit, violations wcrc rcported for Oatfall #006 as well.
Settleable Solids exceeded daily maximum effluent limits on 9 June 2006. Senleable Solids monthly avcrage efflucnt limits wem
exceeded for the months of June 2006 and July 2008.
MSD Coldwater Creek VJWTF
Page 3
Fact Sheet
Part II— Operator Certification Requirements
As per []0 CSR 20-6.010(8) 7'ems and Conditions of a PenniQ, penittees shall operatc and maintain facilities to comply with the
Missouri Clean Nater Law and applicable permit conditious and regulations. Operators or supervisors of operatios at regulated
wastewater treatment facilities shall be cenified in accordance with [10 CSR 20-9.020(2)] and any other applicable state law or
regulation. As per [10 CSR 20-9.010(2)(A)], requirements for operation by certified personnel shall apply to all wastewa[er treatment
systems, if applicable, as listed below:
Check boxes below tliat are applicable to he facility;
Owned or operated by or for:
Municipalities
Public Sewer District St Louis
Counry
Public Water Spply Districts:
Private sewer company regulated by [he Public Service Commission:
Sta[e or Federal agencies:
Each of the above entities are only applicable if they have a Popolation Lquivalent greater than two hundred (200) and/or fifty (50) or
more service connec[ions.
This facility carrently requires an operator with a A Certificalion Level. Please see Appendix A- Classification Worksheet.
Modifications made to the wastewater treatment faciliry may cause de classifiction to be modified.
Operamr's Name:Kenneth Gambaro
Certification Number: 3809
Certification Lcvcl:A
Ihc listing of thc operator above only signifies that stuff drafring this operating permit have reviewecl appropriate Department rccords
and determined that the ame listed on the operating pern»t application has the correct and applicable Certification Level.
Part III Receiring Stream Information
APPLICARLF. DF.SIG\.\TIpS OF WATF,RS OF THE STATE:
As per Missouri's Effluent Regulations [10 CSR 20-7.015], the waters of thc statc are dividcd into the below listed seven (7)
categories. Each category lists effiucnt limitations for specific parameters, which are presented in cacli outfall's Effluent Limitation
Iable and further discussed i the Derivation Discussion of Limits section.
Missouri or Mississippi River [10 CSR 20-7.015(2)]:
Lake or Reservoir 10 CSR 20-7.015(3)]:
Losing [I O CSR 20-7.015(4)]:
Metropolitan No-Discharge [10 CSR 20-7.015(5)]:
Special Stream [I O CSR 20-7.015(6)]:
Subsurfacc Watcr []0 CSR 20-7.015(7)]:
nu ocner aers po csR zo-zos(s):
10 CSR 20-7.031 Missouri Water Quality Slandards, the Department defics ihc Clea Water Commission water quality objectives io
terms of "wa[er uses to be maintaincd and the criteria to protect those uses." Thc rceciving strcam and/or I s classified receiving
stream's beneficial water uses lo be maintained arc ]octcd i tlie Receiving Stream Table located bclow in accocdance with []0 CSR
20-7.031(3).
MSD Coldwater Creek VNNTF
Page 4
Fact Sheet
RECEIVINGS'fRBAM S TABLF.:
WATERBODY NAMH CLA55 IVBID DESIG\ATED USES gHUCT UU*'
Missouri River P 1604 AQL, IRR, LWW, SCR,
DWS, IND, WBC B
10300200 Ozark/Moreau/I,outre
Coldwater Creek C 1706 4QL, LWW, INll,
WBC B
Irrigatiou (IAR). Lirestock Wildlife Watering (LW W), Pmleclion oC Wami Water Aquatic Life and Human Heallh-ish Consumption (AQL), Cool Waer
Pishery(CLF), Cold Waer Fishery (CDF), Whole Body Coniac Recrealion (WBC). Secondury Contact Re<realion (SCR), Dnnkfng Watcr Supply (DR'S),
Industrial (IND), Gronndwatec (GR\.
Gcologi<al Drainagc Uni
RECF,IVI\GSTRF,AMS LON'-FLO\\'VAI,U6STABLE:
RECEIVING STRBAM U, C, P
LOW-FLON' VALUES CFS
1Q10 7Q10 30Q10
Missouri River (P)14119.8 16004.8 22153.2
Coldwnter Creek (C)139 1.74 3.49
Low ow values for the Missouri River Obtained using data from USGS 06934504 lisswri River at Hermann, IO from 01/01/64 thmugh 11l3/10. Low Flow
values for Culdwaler Creek were ubtained using .JI available data fmm USGS 06936475. Coldwater Creek near I31ack Jack, MO.
MIXIPG COVSIDERATIONS TABLE:
Mxinc ZoNe (CFS)ZoNe or INrnA DiuTioN (CFS)
l 0 CSR 20-7.031(4)(A)B(II I)(a)]10 CS R 20-7.031(4)(A)B(II I)(b)]
10 CSR 20-7.031 4 A B II a 10 CSR 20-7.031(4 (A B II b
7Q10 30Q10 1Q10 7Q10
4001.2 55383 353 400. I
0.44 0.87 0.035 0.044
RECEIVIG STREAM MONITORING REQUIREMEVTS:
No receiving stream monitoring requirements are recommended at this time.
Part IV Rationale and Derivation of Eft7ueut Limitations Permit Conditions
ALTERNATI\'E E'ALUATIO\S FOR NEN' FACILITIES:
As per 0 CSR 20-7.015(4)(A)], discharges to losing streams shall be pennitted only afrer other altematives including land
application, discharges to a gaining stream and connection to a regional wastewaler treatment faciliry have been ewluated and
determined to be anacceptable for environmental and/or economic reasons.
Not Applicable
The faciliry does notdischar¢e to a Losing Stream as defined by [IO CSR 20-2.010(36)] &[10 CSR 20-7.031(I)(N)], or is an existing
facility.
AN7'1-BACKSLIDING:
A provision in the Federal Rcgulations [CWA §303(d)(4); CWA §402(c); 40 CFR Part 122.44(I)] that requires a reissued permit to be
as stringent as the previous pennit with some exceptions.
AII limits in this operating pennit are at Icast as protcctive as those previously established; thereCore, backsliding does not apply.
ANTIDEGRADATION:
In accordance with Missouri's Water Qualiry Standard [10 CSR 20-7.031(2)], the Depamnent is to document by means of
Antidegradation Review that the use of a water body's available assimilative capacity is justified. Degradation is justified by
documenting the socio-economic importanee of a discharging activity after detennining the necessity of the discharge.
Renewal no degradation proposed and no further review necessary.
MSD Coldwater Creek VJVJTF
Page 5
Facf Sheet
AREA-WIDE WAS7'E TREATMENT MANAGEDIENT aR[ CONTINUI\G AUTHORI7'Y:
As per 0 CSR 20-6.010(3)(B)], ...An applicant may utilize a lower preference continuing authority by subntitting, as part of the
application, a statement waiving preferential stams from each existing higher preterence authoriiy, providing the :aiver does not
conflict with any area-wide management plan approved under sec[ion 208 of [he Federal Clean Water Act or any other regional
sewage service and treahnent plan appmved for higher preference authority by Uie Department.
BIOSOLIDS SLUDGE SEYAGE SLUDGE:
Rio-solids are solid materials resulting fron wastewater trea[ment that meet federal and state criteria for beneficial uses (i.e. fer[ilizer).
Sludge is any solid, semi-solid, or liquid waste generated from a municipal, commercial, or industrial wastewater treatment plant,
wa[er supply treatment plant, or air pollotion control faciliry or any o[her such waste having similar charac[eristics and effect Sewage
sludge is solids, semi-solids, or liquid residue generated during the treatment of domestic sewage in a treatment works; including but
ot limited to, domestic septage; scum or solids removed in ptimary, secondary, or advanced wastewater treafiient process; and a
materia] derived from sewage sludge. Sewagc sludge does not include ash generated during thc firing of sewage sludge in a sewage
sludge incinera[or or grit and screening generated during preliminary treatment of domestie sewage in a treatment works. Additional
infonnation regarding biosolids and sludge is located a[ the following web address: htto://dnrano.t;ov/env/wpub/index hfiil, items
WQ422 through WQ449.
Not applicable;
This condition is not applicable to the permittee for this facility. Sludge is de-griffed and thickened before being sent via force main m
the Bisscll Poin[ WW"I'P, here it is dewatered and incinerated.
COMPIJANCF, AND E?1FORCEMENT:
Enforecmcnt is the action taken by the Water Protection Program (WPP) to bring an entiry into compliance with the Missoari Clcan
Water Law, its implementing regulations, and/or any terms and conditions of an operating pemit. The primary purpose of the
enforcement activity in the WPP is to resolve violations and retum the entiry to compliance.
Not Applicable
The pennittee/faciliry is not wrrently uder Water Protection Program enforcement action.
PRETREATMENT PROGRAD1:
The reduction of the amount of pollutants, the elimination of pollutants, or the alteration of ffie nature of pollutant properties in
was[ewater prior to or in lieu of discharging or otherwise introducing such pollutants inm a Publicly Owned Treatment N'orks [40
CFR Part 4033{q)].
Pretreatment programs are required at any POTW (or combination of POTW operated by the same authority) and/or municipaliry with
a total design flow greater than 5.0 MGD and receiving industrial wastes that interfere wi[h or pass througl the treahnent works or aze
otlerwise subject to the pretreatment standards. Prelreatment programs ca also be required at POTWs/municipals with a design flow
ess than 5.0 MGD if needed o prevent interference with operations or pass through.
Several special conditions pertaining to he permittee's prelreatment program may be ineluded in Ihe perniit, and are as follows:
Implcmcntation and enforcement oCthe program,
Ammal preheatment report submittal,
Submittal of list of indushial users,
Technical evaluation of need to establish local limitations, and
Submittal of the resuls of Qe evaluatioo
Applicable
This permittce has an approved preh program in accordance with ihe requirements of [40 CSR Parl 403] and 10 CSR 20-
6.100] and is expected to implement and enforce its approved program.
MSD Coldwater Creek NMrfF
Page 6
Fact Sheet
REASONABLE POTENTIAL ANALYSIS (RPA:
Federal regulation [40 CFR Part 122.44(d)(1)(i)] requires effluent limitations for all pollutants that are or may be discharged at a level
that will cause or have the reasonable potential to cause or contribute to an in-s[ream excursion above narrative or numeric wa[er
quality standard.
In accordance with [40 CFR Part 122.44(d)(iii)] if the pennii writer detertnines that any give pollutan[ has [he reasonable po[ential to
eanse, or eontriba[e to an in-stream excursion above the WQS, the permii must contain efFlaent limits for that pollu[ant.
Applicable
A RPA was conduc[ed on appropriate parameters. Please see APernx B- RPA ReSUTS.
REMOVAL EFFCIENCY:
Removal efficiency is a method by which the Federal Regulations defice Secondary Treatment and Equivalent to Secondary
Treatment, which applies to Biochemical Oxygen Demand 5-day (BODS) and Total Suspended Solids (TSS) for Publicly Owned
Treatment Wo[ks (POTWs)/municipals. Please see the United States Environmental Protection Agency's (EPA) website for
inteipretation of percent removal requiremen[s for National Pollutant Discharge Elimination System Permit Application Requirements
for Publicly Owned Treatment Works and Other Treatment Works Treating Domestic Sewage www.epa.eov/fedre,str(EPA-
WATER/1999/Aueust(Dav-04lw18866.htm
Applicable
Secondary Treament is 85% removal [40 CFR Part 133.102(a)(3) &(b)(3)].
SAMTARY SER'ER OVERFLOWS (SSOS BYPASSES I\FLOi' aYt INFILTRATION (IBcI— PRF,VENTION/REDUCTION:
Sanitary Sewer Systems (SSSs) are municipal wastewater collection systems that convey domestic, commercial, and industnal
was[ewa[er, and limited amounts of infiltrated groundwater and s[orm water (i.e. I&I), to a POTW. SSSs are not designed to collect
arge amounts of storm water runoff from precipitation events.
Unheated or partially treated dischazges from SSSs are commonly referted to as SSOs. SSOs have a variety of causes including
blockages, line breaks, sewer defects that allow excess stom water and ground water ro overload the system, lapses in sewer system
operation and maintenance, inadequate sewer design and cons[rucion, power failures, and vandalism. A SSOs is defined as an
untreated or partially treated sewage release from a SSS. SSOs can occur at any point in an SSS, during dry weather or wet weather.
SSOs include over(lows [hat reach waters of the state. SSOs also include overflows ou[ of manholes and onro city s[reets, sidewalks,
and other terresttial locations.
Applicable
In accordance with 40 CFR Part 122.41(e), the permittee is required to develop and/or implement a program for maintenance and
repair of [he collection system and shall be required in this operating permi[ by either means of a Special Condition or Schedule of
Compliance. In addition, de Department considers the development of his program as an implemenlation of this condition.
Addi[ionally, 40 CFR Part 4033(0) defines a POTW to include any device and sys[ems nsed in the storage, treatment, recycliog and
reclamaion of municipal sewage or indus7ial wastes of (iquid nature. I also includes sewers, pipes', and oher conveyances only if
they convey wastewater to a POTW Treatment Plant.
At this time, the Department recommends the US EPA's Guide for Evaloatig Capacity, Management, Operation and Maintenance
CMOM) Programs At Sanitary Sewer Collection Sys[ems (Document EPA 305-B-OS-002). The CMOM identifies some of the
criteria used by the EPA to evalaate a eollection system's management, operation, and maintenance and was intended for ase by the
EPA, state, regulated community, and/or third party en[ities. The CMOM is applicable to small, medium, and large systems; both
public and privately owocd; and both regioal and satellite collectian systems. The CMOM does not subsimte for die Clean Water
Ac[, the Missouri Clean Water Law, and both federal and state regula[ions, as it is not a regulation.
MSD Coldwater Creek WWTF
Page 7
Fact Sheet
SCHEDULF. OF COJIPLIANCE (SOC):
A schedule of remedial measures includedin a pennit, including an enforceable sequence of interim requirements (actios, operations,
or mitestone events)lcading to compliance vith the Missouri Clean Vater Law, its implementing regulations, and/or the tens and
conditions of an operating permit.
Applicable
This permi[ contains a Schedule of Compliance for E. coli. The time given for effluent limitations of tliis permit listed under Interim
Effluent Limitation and Final HfOuent Limitations were established in accordance with [10 CSR 20-7.031(]0)].
STORJ7 WATER POLLUTION PREt'F,NTIOr PLAN (SWPPP):
In accordance with 40 CFR 122.44(k) Bes Manngemen Praclices (BMPs) o control or abatc the disclarge of pollutants when: I)
Authorized under sectio 304(e) of tle Clcan Water Act (CWA) for he control of loxic polluanls and hazardous subsances from
ancillary industrial activities: (2) Authorized under seetion 402(p) oCthe CWA for the control of storm waror discharges; (3) Numeric
effluenl limitaions are infeasible; or (4) the practiccs are reasonably necessary to achieve effluent limilations and standards or o carry
out the purposes and intent of the CWA.
In accordance with the EPA's Develotiine Yom Stormwater Polhlion Preventiov Plan A Guide for'Gndushin! Operaorr, (Document
number EPA 833-B-09-002) [published by the United States Environmental Protection Agency (USEPA) in February 2009], BMPs
are measures or practices used o reduce [he amount of pollution entering (regarding this operating perniit) uaers of the state. BMPs
may take the form of a process, activity, or physical shvcture.
Additionally in accordance with tle Stomi Water Management, a SNPPP is a series of seps and aetivities to (1) identify sourees of
pollution or contamination, and (2) sclect and carry out aetions vhich prevent or control the pollution of storm water discharges.
Applicable
A SWPPP shall be developed and implementcd for each site and shall incorporate required practices identified by the Department with
jurisdiction, incorporate erosioo cotrol practices specific to site conditions, and providc for maintcnance and adherence to the plan.
Vnainxc:
As per the Missouri Clean W ater Law y 644.061.4, variances shall be granted for such period of time and under such terms and
conditions as shall be specified by the coimission in its order. 7'he variance may be extended by affinnative aetion of the
eommission. In no even shall the variance be granted for a period of time greater dian is reasonably necessary for complying with the
Missouri Clean \Vatcr La §§C44.006 to 644.141 or any standard, rule or rcgulation promulgated pursuant to Missouri Clea Watcr
Law §§644.006 to 644.141.
Not Applicable
This operating pemiit is not draftcd undcr prcmises of a petition for variance.
WASTEI,OAD ALLOC,ITIONS (WLA) FOR LIJ7ITS:
As per 10 CSR 20-2A10(78)], the amount of pollutant cach discharger is allowed by the Department to release into a given stream
aftcr the Departmen has determined otal amount of pollutant hat may be discharged into hat stream without endangering is water
quality.
Applicablc
R'asteload alloca[ions vere ealeulated where applieable using water quality criteria or water quality model results and the dilution
equation below:
Cs x Qs+ Ce x Qe
Q
EPA/505/2-90-001, Scction 4.5.5)
e+ S
N'here C=downstreamconcentra[ion
Cs upstream concentration
Qs upstream Flor
Ce efflueN concentration
Qe= eftluent flow
MSD Coldwater Creek W WTF
Pa9e 8
Fact Sheet
Chronic wasteload allocations were detemined using applicablc chronic water qualiry criteria (CCC: critcna continuous
concentration) and s[ream volume of flow at the edge of the mixing zone (MZ). Acute wasteload alloca[ions were determined using
applicable water quality criteria (CMC: criteria maximum concentration) and stream volume of Flow at the edge of the zone of initial
dilution (ZID).
Water quality based maximum daily and average monthly efflent limitations were calculated using methods and procedures outlined
in USEPA's "Technical Support Document For Water Qualiry-based Toxics Control (EPA/505/2-90-001).
Number of Samoles "n":
Additionally, in accordance with the TSD for water qualiry-based permitting, efIluent qaliry is determined by the anderlying
dishibution of daily values, which is detemined by (he Long Tenn Average (LTA) associated with a parlicular Wasteload Allocation
WLA) and by the Cocfficient of Variation (CV) of the effluent concentrations. [nereasing or decreasing the tnonitoring frequency
does not affect this undedying distribution or Ireatment perfonnanec, which should be, at a miuimum, be targeted to comply with the
values dictated by tbe WLA. Therefore, it is recommended that the acma] planed freqaency of monitoring nomally be used to
detennine tlie value of "d' for calcidating the AML. However, in situaions whcre monioring frequency is once pe montl or less, a
higher valuc for °n" must be assumed for AML derivation purposes. Thus, thc statistical procedure being employcd asing an assumed
number of samples is "n 4" at a minimum. For Total Ammonia as Nitrogeq "n 30" is used.
VVLA MODELIVG:
There are two general types of effluent limitations, technology-based efFluent limits (TBELs) and water qualiry based efFluent limits
WQBELs). If TBELs do not provide adequate protection for the receiving waters, lhen WQBEL must be used.
Not Applicable
A WLA study was either not submiued or detemiined nul applicable by Deparment saff.
WATER QUALITY STANDARDS:
Per [10 CSR 20-7.031(3)], General Criteria shall be applicable to all waters of the state at all imes including mixing zones.
Additionally, [40 CFR 122.44(d)Q directs the Department to establish in eaeh NPDES permit to include conditions to achieve water
quality established under Section 303 of the Clean V2ater Act, including State narzative criteria for water qualiry.
WHOLE EFFLUE.''I TOXICI'1'Y (WET) TES'f:
A WET test is a quantifiable method of detertniing if a discharge Gom a facility may be causig toxieity to aquatic life by itseLf, in
combination vith or through synergistic responses when mixed with receiving stream vater.
Applicable
Under the federal Clean Water Act (CWA) §101(a)(3), requiring WET testing is reasonably appropriate for site-specitic Missouri
Stae Operating Permits Cor discharges to waters of the state issued imder the National Pollutant Dischazge Elimination Systcm
NPDES). WET testing is also reqaired by 40 CFR 122.44(d)(1). WET testing ensures Ihat Ihe provisions in the 10 CSR 20-
6At0(8)(A)7. and Ue Waer Quality Standazds 10 CSR 20-7.031(3)(D),(F),(G),(I)2.A B are being met. Under [10 CSR 20-
6.010(8)(A)4], the Department may require othei terms and coditions that it deems necessary to assure compliance with the Clcan
Water Act and related regulations of the Missouri Clean lVater Commission. In addition the following MCWL apply: §§§644.0513
equiies the Department to set permit conditions that comply with the MCWL and CWA; 644.051.4 specifically references toxiciry as
an item we must consider in writing permits (along with water qualiry-based efFluenl limits, pretreatment, etc...); and 644.051.5 is the
basic authoriry to require testing conditions. WET test will bc required by all facilities meeting the following criteria:
Facility is a designated Major.
MSD Coldwater Creek W WiF
Page 9
Fact Sheet
303(d) Lisr Torati Maarnon Dnv Lonu (TMDL):
Section 303(d) of the federal Clean Water Act requires that each state identify waters that are not mee[ing water qaality standards and
for which adequate water pollution controls have not been required. V'ater quality standards protect such beneficia] uses of water as
whole body eontaet (such as swimming), maintaining fish and other aquatic life, flnd providig drinkin water for people, livestock
and wildlife. The 303(d) list helps state and federal agencies keep track of watcrs that are impaircd but not addressed by normal water
pollution control programs.
A TMDL is a calculation of the maximum amount of a given pollutant that a body uf wacer can absorb before its water qualiry is
affected. IT a water body is determined to be impaired as listed on [he 303(d) list, Ihen a watershed managemen[ plan will be
devcloped Ihat shall include Ihe TMDL calculation
Applicable
Coldwater Creek (WBID: ll0 is listed on the 2008 Missouri 303(d) List for low dissohed oxygen, bactena ad chloride. The
Missouri River (WBID: 1604) is listed on the 2008 Missouri 303(d) List for bacteria.
This facility is considered to be a source of ar has the potential to contribute to the above listed pollutant(s). 7he facility
discharges stonnwater into Coldwater Geek. All of the pollu[ants of concern for Ihis waterbody have unknown or urban non-point
sources. Therefore, stomiwater coold be implicated in the TMDL. However, the faciliry should not contribute signicantly to
impairment by bacteria in the Missouri River, as they are sobject to mandatory G. coli effluen limitations.
MSD Coldwater Creek W WTF
Page 10
Fact Sheet
Part V— E(fluenf Limits Determination
OutfaJl #004—Main Facility Outfall
Effluent limita[ions derived and established in the below Gffluent Limita[ions Table are based on current opera[ions of the facility.
Fture permit action due to faciliry modification may contain new operating pernit terms and eonditions that supercedes the terms and
conditions, including effluent limitations, of diis operating pemiit.
EFF'LUEN7' LIDtITAT10N5 TABLE:
BASI$
DAILI' VEEKLY' MOTHLY PREVIOU$ PF.RhllT
PARAMETGR UNIT FOR
MAXIMUM AVEHAGE AVERAGG
MODIPIED
LIMITATIONS
IA7ITS
FI.O1V GPD 1
CBOD nnc/L 40 25 No
TSS Mc/L 1 45 30 No
rH SU 1 G.5-9A G.5-9.0 Yes 6.0-9.0
AMoNn n5 N Mc/L l, 2, 3 No
Please see Escheriehia Coli (E. coli) in the Deriva[ioo and Discossion
F.SCIIIiRICF1IA COLIORM 2.3 QCI00 bCOW.
TOiAL{ZESIDUALCHLORMC MG/L 2+3
0.013m1 O.OIOmI NCR'
OII. GRenSe (MG/L)MG/L I i S 1 O NO
Cvaume, AMenneLe To
Nb L 2,9 No
CHLORINATIOF
Artsarvc, Torn
gL 2.9 No
Rccoveanae
CADMIUM,OTAL gL Z,3,9 4.8 4.6 YES
RtCOVERAdLE
CHR0INM(III), TOTAL t TOTAL
RECOVEItABLH KL z9 Ye3
CHROMIUM
CHROMIUM(VI),TOTAL g y YS
7OTAL
DISSOLVED CHROMIUM
COPPER TOTAL
NgjL 2,9 x NO
RECOVERABLE
Lenn,TOrnRCCOVEansE pg/L 2,9 No
NICKEL, TOTAL
NL 2,9 R NO
RECOVERANLF
SvEa, Torn
Fig/L 2,3,9 65 24 Yes
RCCOVCRA6LC
ZIVC. TOTAL RF;COVERABLB N'/L 2,9 NO
TOTALTOXICORGAMCS mg/L 2,9
WNOe EFFurT TOFarv Please sce VET Tesl in the Derivalion and Discuss
WET)Trsr Suwival Sectionbelow.
MoxTOewc FrzeQUENCi•
pease see Minimum Sampling and Reporting Frequency Requircments in the Derivation and
Discussion Secvon below.
bfonitoring requiremenl only.
of colonies/I OOmL; the ]onthly Aveeage for E. coli is a geomctrie mcan.
Basis for Limi[ations Codes:
L Siate or Federal Regulation2ar 7. Antidegmdation Policy
2. Wacr Quality Standard (indudec RCA)8. Wacr Qualiry hlodcl
3. Water Qualiry 8ased Eflloenl Limits 9. Best Profcssional )udmcnt
4. Lagoon Policy 10. TMDL or Pertni in lien of'1'MDL
5. Ammonia Policy 11. WP,T Tcst Policy
6. Dissalved Oxygen Policy 12. Anlidegrndatlon Review'
MSD Coldwater Creek VJVJTF
Page 11
Faci Sheel
OUTFALL #004—DERR'ATION AND DISCUSSION OF LIMITS:
Flow. In accordance with [40 CFR Part 122.44(i)( I)(ii)] the volume of effluent discharged Gom each outfall is needed [o assure
compliance with permittcd cffluet limitations. If the pertninee is unable to obtain efflueot flow, then it is the respoasibility of
the permittee to inform the Department, which may require the submittal of an operatiug permit modification.
Carbonaceous Biochemical Oxveen Demand (CBOD). Efflucnt limitations from thc prcvious statc operating pennit have becn
reassessed and verified that they are still protective of the receiving stream's Water Quality. Therefore, effluent limitations have
been retained from previous state operating permit, please see the AreuCnaLe DesicnTos oF WnTexs oF TTie S'rn're sub-
section of the Rcceivine Stream Informa8on.
Total Suspended Solids (TSSI. Effluent limilations from ihc previous state operatiog permit have been reassessed and verified
ihat they are still protective of the receiving seam's Water Quality. Therefore, efflaent limitations have been retained from
previous state operating permit, please see the Arcns DescNn'rorv OF Wp'reas oe rxe Srn're sub-section of the
Receivine Strcam ]nforma[ion.
H, pH shall be maintained in [he range from 6.5 9.0 standard units (SU) as per 0 CSR 20-7.031(4)(E).
Total Ammonia Nitroeen. A Reasonable Potential Analysis conducted with moniroring data indicates no reasonable potential
for thc facility to inwr excursions of R'ater Quality Standards in the Missouri Rivec Therefore, a monitoring only requirement
from the previous pemit is rctained. Early Life Stages Present Total Ammonia Nitrogen criteria apply [10 CSR 20-
7.031(4)(B)7.C. Table B3] defaalt pH 7.8 SU Background total ammonia nitrogen 0.01 mg/L.
Escherichia coli(orm (E, colil. Monthly Average of 206 per 100 mL as a geometric mean and Weekly Average of 030 during
tlie recreational season (April 1— October 31), to protect Whole Body Con[act Recreation (B) designated use of the receiving
stream, as per 10 CSR 20-7.031(4)(C). Weekly Average effluent variability will be evalaated in developmet of a fuNre efFluen
limit An efflucnt limit for both monthly average and wcekly avcrage is required by 40 CFR 122.45(d). If more than one Q)
sample is wlleced in a calendar week, then the result is o be reponed as a geometric mean. The permit will includc interim and
final limits for E. coli as the faeili[y does not curtently disinfeet.
Total Residual Chlorine (TRCI. N'arnrwater Protection of Aquatic Life CCC 10 µg/L, CMC 19 µg/L 10 CSR 20-7.031,
Table A]. Background TRC 0.0 µg/L.
C =(((Qe+Qs)*C) (Qs*Cs))/Qe
Chronic WLA: C 0.0))/62
C 6553 µg/L
nrwin: c=«6z+400.iv—aoo.i*o.o)i6z
C,. 141.6 µg/L
LTA 655.3 (0.527) 345.3 µg/L CV 0.6, 99'" Percentile]
LTA„ _]41.6 (032]) 45.5 µg/L CV Q6, 99 Percentile]
Use most pmtective number of LTA or LTA„.
MDL=45S (3.11) 141.5 µg/L CV 0.6, 99'" Percentile]
AML 455 Q.55) 70.5 µg/L CV 0.6, 95'" Percentile, n= 4]
Total Residual Chlorine effluent limits of 0.142 mg/L daily maximum, 0.071 mg/L monthly average are recommended if
chlorine is used as a disinfce[anL Standard compliance language for TRC, including the minimum level (ML), should be
included in the permi.
Oil Grease. Comentional pollutant, effluent limitation for protection of aquatic life; 0 mg/L monthly average, 15 mg/L daily
maximum.
Cvanide, Amenable to Chlorination. Reasonable Potential Analysis indicated no potential for the facility to violate Missouri
WQS for Cyanide in the Missouri River. However, this facility receivcs wastewater from significant indushial users with
pretreatment standards for Cyanide. Therefore, [he monitoring only requirement fiom the previous operating permit will be
reained: Monitoring frequcncy will be retained at once per quarter.
MSD Coldwater Creek W W7F
Page 12
Fact Sheet
Metals
Reasonable Potential Analysis indicated no po[ential for the facility to violate Missouri NQS for Arsenic, Chromium, Copper, Lead,
Mercury, Nickel or Zinc. However, this facility receives wastewater from significant industrial users with pretreatment standards for
these metals. Therefore, monitoring only requirements will be retained from the pcevioas operating permit. Moni[oring frequency
will be retained at once per quarter.
EfFluent limitations for total reeoverable metals were developed using methods and procedures outlined in the "Technical SuQport
Document For Water Quality-based Toxic Controls° (EPA/505/2-90-001) and "The Metals Translator: Guidanee For Calcalating A
Total Recoverable Pemit Limit From A Dissolved CriCerion" (EPA 823-B-96-007). General wann-water fishery criteria apply and a
water hardncss of 162 mg/L is used in the conversion below.
Due to the absence of contemporaneous effluent and instream data for [otal recoverable metals, dissolved metals, hardness, and total
suspended solids with wlich to calculate metals translators, partitioning bchveen the dissolved and absorbed phases was assumed to
be minima] (Seetion 5.73, EPA/505/2-90-001). Freshwater criteria comersion factors for dissolved metals were used as the metals
translator as reconmended in guidance (Secion 1.3, 1.5.3, and Table l, EPA 823-B-96-007). If concurreni site-specific data for total
recoverable metals, dissolvcd metals, hardness, and total suspended solids arc provided to he DepaiYment, partitioning evalua[ions
may be considered and site-specific trans{ators developed.
METAL
CONVERSION FACTORS
ACUT[CHRONIC
Cadmium 0.924 0.889
Silver 0.850 N/A
Conversion factors for Cd and Pb are hardness dependent. Values calculated using equation found
in Section 13 of EPA 823-B-96-007 and hardness 162 mg/L.
Cadmium, Total Recoverable. The RPA conducted with monitoring data indicatcd potential fw ihe facility to violate
Missouri WQS in the Missouri River for Cadmium. Hffluent limitations have been calculated below. Protection of Aquatic
Life Chronic Criteria 03 µg/L, Acute Crieria 7.6 µg/L.
Chronic =0.3/O.S89 =0337 pg/L
Acute 7.6/0.924 8.23 µg/L
Chronic WLA: C=((62+40012)0337—(4001.2 0.0))/62
C 22. µg/L
Acu[eWLA: C *0.0))/62
C 613 pg/L
LTA 22.1 (0.294) 6.5 µe/L CV 133, 99' Percentilc]
LTA 613 (0.159) 9J µg/L CV 133, 99' Pcrcentilc]
Use most protective number of LTA or LTA
MDL=65 (6.28)=40.8 µg/L CV 133, 99'" Percentile]
AML 65 (225) 14.6 µg/L CV 133, 95' Percentile, n= 19]
DMR data indicate that the facility is capable of ineeting these limits upon issuance.
Silver, Total Recoverable. The RPA conducted with monitoring data indicates potential for the facility to violate Missouri
WQS for Silver in the Missovri River. Hffluent limitations have been calculated below. Protection of Aquatic Life Chronic
Criteria N/A, Acute Criteria 7.4 pg/L.
Acute 7.4/0.850 8J pg/L
AcuteWLA: C=((62+400.1)8J—(400.1*0.0))/62
C, 64.8 µg/L,
LTA 64.8 (0163) 10.6 pg/L CV 1.29, 99` Percentile]
MSD Coldwater Creek W WTF
Page 13
Fact Sheei
MDL 10.6 (6.13) 65 µg/L CV =1.29, 99'" Percentile]
AML 10.6 (222) 24 µg/L CV =].29, 95' Percentile, n= 20]
DMR data indicate that the facility is capable of ineeting these limits upon issuance.
Total Tosic Oreanics (TTO). Significant industrial users with pretreatment standards for TTO discharge ro this facility.
Therefore, a once per year monitoring only requirement has been retained from the previoas operating pennit.
N'ET Test. WET Testing schedules and intervals are established in accordance widi the Departmen['s Pennit Manual; Section
52 F.f/lrent Limits IVET Tesling for Cmnpliance Bio-rnonirori»g. 11 is recommended Ihat WET testing be conducted during the
period of lowest stream flow.
Acutc
No less than Oce/vFne:
Facility is designatcd as a Major facility or has a design flow 1.0 MGD.
Faciiiry continvously or routinely exceeds their design floi.
Facility exceeds its design population cquivalcnt (PE) for BOD whether or not its design ilow is being exceeded.
Facility has Watcr Quality-bascd cftlucnt limitations for toxic sobstances (other than NI1
Acute AEC%= ((design 11ow ZID design flow) x 100
Acute AEC% _((62 400. I)/ 62)"] x 100 I 3.4% rounded to 13%
Dilution series is as follows: 52%, 26%, 13%, 6.5%, 325%
Minimum SamplinQ and Rcuortinp Frequencv Requirements. Sampling and reporting frequency requirements have been
retained from previous state operating permit for standard pollutants. WET testing will bc reduced to once per year.
Ouljalls #005 Stormwater Rwoff
EFFLUENT LIhllTAT10,'S TABLE:
BASIS
DAILY WY;1?KI.Y MOKTIILY PREVIOUSPF,RMITPARAMETERU.'IT FOR
MAXIMUM AVERACiB AVERAGE
nOUIFIED
LINITATIO$LIMITS
FOw Gv I NO
BOD Mc/L 1,2 No
vH SU 1,2 6.5-9.0 6.5-9.0 Yes G.0-9.0
CHLORIDI3 MG/L Y,9 Y&S
TOTALNITROGENASN mC/L 2,9 g$ax
70TALPHOSPHORUSASP I112/L Z,x YGS
MONITOamG FReQUFNCV
Pcasc sce Minimum Sampling and Rcporting Frequcncy Rcquircmcnts in [hc Deriva[ion and
Discussiori Scction bclow.
Ylonitoringrequirementonly.
ft of colouies/I OOnil,; the Momhly Acerage foe E. coll is a geometric mean.
Paramerer no peeviously esablished in previons stale operatiug permit.
Basis for LimitaHons Codes:
L State o Fedcml Regulalion/Law 7_ Mtidegradation Policy
2. WalerQualityStandord(includesRPA)8. WaterQualityModel
3. Waler Qualiry Hased Htlluent Limits 9. Besi Professional JudgmeN
4_ Lagoon Policy 10. TMDL or Pertnit in lien oCTMDL
5. Ammonia Yolicy I I. W E7"Pes Policy
C. Dissolved Oxyen Policy 12. Mtidcgradation Review
OUTFALL #OOS— DERI\'ATION AND DISCUSSIO OF LIMITS
Flow. In accordance with [40 CFR Pari 122.44(i)(I)(ii)] the volume of effluent discharged from each oatfall is needed to assure
compliace with pemiitted effluent limitations. lf the pennittee is unable o obtain effluent 11ow, Ihen it is ihe responsibiliry of
the permittee to inforni the Departtnent which may require the submittal of an operating pennit modification.
MSD Coldwater Creek W WTF
Page 14
Fact Sheet
Biochemical OxYaen Demand BODc). DMR data indicate that ROD in the discharge from this oulfall does not have potential
to incur excursions of water quality standards in Coldwater Creek. However, due to the impaimicnt of Coldwater Creek from low
dissolved oxygen, a monitoring oly requirement will be retained in the permit. Therefore, efFluent limi[ations have been retained
from previous state operating pennit, please see the Aeet,tCwee DescNniov Os H'pTeRS oF ine S7'a.7'E sub-section of ihe
Receiine Stream Information.
SetUeable Solids (SS). Review of DMR data indicates only two excursions of Settleable Solids effluent limitations in the past five
years. All other SS levels were consistently below effluent limitations of the previous operatig permit These data indicate that
BMPs havc been successfully implemeted as per the SWPPP for the facility. Therefore, monitoring requirements for this
parameter vill be retnoved from de peanit.
H. pH shall be maintained in ihe range from 6.5-9.0 standard units (SU) as per 10 CSR 20-7.031(3)(E).
Chloride. A monitoring only requiremet for Chloride will be established in the pernit due ro impairmcnt of Coldwater Creek
from chlonde. This data will be used to characterize the potential contribution of stormwater Crom the facility to this impairment.
Upon next renewal, monitoring data will be assessed to detennine the need for continued monitoring or further BMPs at the
facility.
Oil Grease DMR data for Oi] and Grease have been revieed These data indicate concentrations consistently below effluent
limitations of thc previous operaing permit. Therefore, his parameter will be removed from he permit.
Total Nitroeen and To[al Phosphorus. A monitoring only requircment for Total Nitrogen and Total Phosphorus will be
established in tlie pennit in anticipation of TMDL development for low dissolved oxygen in Coldwater Creek. Nutrients often
drive low dissolved oxygen levels. Moitoring data will help characterize stormwater runoff from the facility to determine its
potential conMbution to low dissolved oxygen impairment in Coldwater Creek.
Minimum SamplinQ and Reportin2 Frequencv Reuuirements. Sampling and reporting frequency requirements have becn
rctaincd from previous state operating permit.
PART VI: Findina of Aftordabilitv
Pursuant [o Section 644.145, RSMo., the Department is required ro derermine whether a permit or decision is affordable and makes a
finding of affordabiliy for certain permittig and enforcemem decisions. Tliis reyuirement applies o discharges from combined or
separate sanitary sewer systems or publically-owned treatment works.
Applicable; The Department is required ro determine findings of affordabiliry becaose the permit applies to a combined or
separate sanitary sewer system for a publically-owned trcatment works.
Finding of affordability The department has made a reasonable search for empirical data indicating Ihe permit is affordable. The
search consisted of a review of department records that might contain economit data on the emiununity, a review of information
provided by Ihe applicant as part of the applieation, and public comments received in response to publie notices of this draft permit. If
thc empirical cost data was used by the permit writer, Ihis data may consist of inedian household income, any other ongoing projects
that [he Department has knowledge, and other demographic finaucial information that the communiry provided as covtemplated by
Section 644. 1453.
The department is hereby making a 6nding based frum the fullowing fac[s:
The applicant states that the tems and conditions are affordable for the community.
OR; This permit actio was taken at the discretion of the facility, therefoe the departmet assumes the applicanl already detennined it
is affordable;
2) The permit action is take at the discrction of thc system itself (e.g., sewer extension consiruction permits, or the relocation of
an outfall in lieu of otherwise upgrading a system in order to comply with a permit issued prior to July I 1, 2011);
3) This permit contains no new or expanded tems and conditions;
4) The department is not aware of any significant economic impacts this permit would eause on distressed populations;
5) No eomments indicating sach impact were received duing the public comment period on the draft perniit;
6) The department is not avace of any otliec more cost effective wastewater trcamient options tliat wou{d achieve the required
effluent quality;
MSD Coldwater Creek W WTF
Page 15
Fact Sheet
7) The aciliry Plan on the cons[ruction pennit contained an affordability finding;
8) The applicant provided increased eftluent dischaige monitoring costs duc ro cxpandcd monitoring frequency for certain permit
parameters;
9) An affordability analysis as performed as part of the Long Tenn Con[rol Plan on Combined Sewer Overflows;
0) An affordability anatysis was performed as part of an Anti-degrada[ion Review Determination;
11) The applican[ has entered into a Voluntary Compliance Agreemenl (VCA) for the purpose of eliminating inflow and
infiltralion into the plant. The applicant entered into the VCA after due consideralion, therefore lhe department assumes that the
applicant has deterniined it is affordable.
12) The applicant is negotiating an Amcndcd Consent Judgment which addresses eliminating inflow and infiltrations into the
plant, as well as fiiture unauthorized discharges from the facility's peak flow clarifiec This Amended Consent Judgment will establish
a schedule [o address these issues taking in to consideration affordabiliry.
Final and interim effluent limitations have been establishcd in this pemit for various inetals. Additional treatmenl to attain
compliance with final limitations should not be neeessary given the faet that ihe city has an approved pre[rea[ment program to
establi5h localized limitations on industrial disehargers of the facility. Because such metals ]imitations xre not expeeted to cause any
significant inereases in the eost of operating the W WTP, the Department finds that thc reissoance of this pennit is affordable pursuant
to Section 644.145 RSMo.
13) The applicant is negotiating a Amended Consent Judgment which addresses eliminating inow and infiltrations into the
plant, as well as futre unautlorized discharges from the facility's peak flow clarifier. This Amended Consent ludgment will establish
a schedulc to address these issues taking in to consideration affordability.
Final and interim limitations have been established in this permit for E. coli. Addilional treatment to attain compliance with final
imitations should not be necessary given dre fact tha[ the faciliry has ozone disinfection as part of its treatment train. Because such E.
coli limitations are not expected to cause any significant increases in the cost of operating the W W7'P, the Department finds that the
reissuance of [his permit is affordable pursuant to Section (44.145 RSMo.
14) Others: explain.
Scction 644.145 of HR 89 as signed by the Governor on July 11, 201 I, requires the Depanment to make a finding of affordability,
with respect to the community and its residents, in connection with the issuance of certain pemiits under the Missouri Clean Water
Law.
The financial capability of the Metropolitan SL Louis Sewer District (MSD) was considered in the Comhined Sewer Orerflow Long-
Term Cmtrol Plan Updnte Repm7, Revised Februnry 20[1 (Plan). Although the Coldwater Creek Wastewater Treatment Facility is
uot part of a combied sewer system, the finacial capability analysis in the report included this facility's service area and the
projected cosis for knnwn projecls at the time.
In addition, projec[s to improve the Coldvater Creek Wastewater Treatment Facility and the collection system vill be required as part
of thc fcderal conscnt dccrcc No. 4:07-CV-1 ]20(CEJ), which was lodgcd on August 4, 201
Part V[I Administrative Requirements
On the basis of preliminary staff review and the application of applicable standards and regulations, [he Department, as administrative
agent for the Missouri Clean Water Commission, proposes [o issue a permit(s) subject to certain efflucnt limitations, schedules, aud
special conditions contained herein and within the operating permit. The proposed detenninations arc tentative pending public
commet.
Pu¢c Norce:
The Deparhnent shall give puUlic notice tha a drafl pennit has been prepared and its issuance is peuding. Additionally, public noticc
N-ill be issued if a public hearing is to be held because of a significant degree of interest in and water quality concems related to a draft
penniL No public notice is required when a request for a perniit modification or [erniination is denied; however, the requester and
permittec must be ootificd of thc denial in writing.
The Department must issuc public notice of a pcnding operating pemit or of a new or rcissucd statewidc general pemiit. The public
commen[ period is [he length of time not less than 30 days folloing the date of the public notice hich in[erested persons muy submit
iitten comments abot the proposed permit.
For persons wanting to submit comments regarding [his proposed operating permi[, then please refer io the Public Notice pagc located
a ihe fronl of his draR operating permiL The Public Noice page gives direcion on how and where to submit appropriate comments.
MSD Coldwater Creek W WTF
Page i 6
Fact Sheet
The Public Notice period for this operating permit was from November, 10, 2011 to December 10, 201 I. Responses to the Public
Notice of this operating pertnit warrant the modification of effluent limits and/or the temis and conditions of ihis pemit. The silver
interim and final effluent limits were corrected. The language f'or compliance with Ihe General Criteria of the Water Qualiry
Standards was changed. Other changes were non substantiaL
DATE OF FACT SxEEr. (O1/07/201 I); ReVISED 04/OS/2011; ReVISED 12/14/2011
COMPLETED Bl':
NAOD11 CiE60, ENVIRONRtENTAL SPECIALIST I
NPDES PeRtTS UNr
PERM1IITTING A\D ENGINEERI\G SECI'ION
WATER PROTECTIO\ PROGRAf
Nnoni.Geso r,ilnK.no.cov
REVISED BY:
VAI.TER FETT E,'VIRONMENTAL E,'GINEER II
NPDES PERDIITS AnD ENCINEERI\C SECTIO\
WATER PROTECTION PROGRA\I
rx.:(573)526-4589
I'ALTER.FETTR D\R.h10.GOV
MSD Coldwater Creek W Wf F
Page 17
Fad Sheel
Part VIII Appendices
APPENDIX A CLASSIFICATION WORKSIIEET:
ITLM POINI'SPOSSIHW!POINTS
ASSIGNED
1 pL/10.000 PE or mojor GactionMaximumPopula[ion Hquivalem (P..) served (Maz 10 pts.)p
lhcrwf.
Meximum: 10 p Design Flow (avg. dayl or peak month: usc greale I pi. MGD or major Gacion
Max 10 ps.)IheeeoC.
I.EFFLUEN7'D15CHARGERECEIVINGWATERSE\SITIVITYi
Missouri or Mississippi River 0 0
All other stream discharges excep o losing srceams and steam
reaches m ortfn wholc bod contact
Discharge to lake or reservoir uuisidc of desiymated whole body 2
contacl recreatiowl arca
Discharge o losing stream, or sn¢in, lake or asemar aea
3
su ortin ahole bod contae[ recreation
PRELIMINARY TREATMENT Headworks
Screeningandoeconuninuiion 3 3
Gnt rcmoval 3
Plant pmping of main Flow QitY station at ihe headworks')3 3
PRiMARY TREATMENT
Primarydarifers 5 5
CombinedsedimeNation/digestion 5
Chemical addiion (excepl chlorine, enrymes)4
REQUIRED LABORATORY CONTROL—perf'ormcd by plan6pecsonnel (highcsi level only)
Pnsh— buuon ur visual methods for sirnple iesi such as pH,3Settleablesolids
Addiiional proccdures such as DO, COD. BOD, iitraions, solids.5volatileconen
Moe advanced deteminations sucl as BOD seeding proceduees,
fccal coliform, nutricnts, totnl oils, hcnols, cc.
Highly s'ophisIcacd fnsWmcnation, such as atomic abwrpion and
0 10
as chromato ra h
ALTERNATIVEFATE OFEFFLUENT
Direct reuse or rerycle of efFlueni G
LandDisposal—lowrntc 3
High ram 5
Overland tlow q
TotalGompagcONE.P}q i
MSD Coldwater Creek VNNTF
Page 18
Fact Sheel
APPENDIXA-CLASSIFICATIOV WORKSHEET CORTI\UED
hF,M POIMS POSSIBLE
POINTS
ASSIGNED
VARIATION IN RAW. WASTE (highest level only) (DMR exceedances and DesigmFlow cxceedances)
Vadation do m excced those mrmally or typically expceted 0
Roeurring deciacions or excessive cariations of 100 to 200 in
Z
stren rth and/or Flow
Recurrin_ deviations or excessive variations of more than 200 in
4
strcn th and/m ilow
Raw' w'astes subject b toxic waste discharge G 6
SECONDARY TREATMENT
Trickling Fler and other fixed film media with sccondary clari5ers 10
Actirated sludge wih secondary claofiers (ineluding exrended
5 l5
aera[ion and oxidation ditches)
Stabilization ponds wihoW aeration 5
Aerated lagoon R
Advanced Waste Treatment Polishing Pond 2
Chemical/physital-xithoW secundary 15
Chemicallphysical following secondary 10
Riological or c6onical/biological 12
Carbon regeneration 4
DISINFHCTION
Chlorination or comparable 5
Dechlorivaion 2
Ou-sie generotfon oldsinCectam (except UV light)5
UV liehl 4
SOLIDSHANULING-SLUDGE
Solids Handline ThicAening 5 5
Anacrobic digestion 10 10
Acrobic digcstion 6
Evaporative sludge drying 2
Mechanital dewaering R
Solids reduction (incineratioq we oxidation)12
Landupplication
To[al frtimPa%e 7'N'O (2)36
Total Gom page OE (1)41..
GrandTotal 77.,,
A: 71 points and greater
B: 51 poinis 70 points
C: 26 points 50 poin[s
D: 0 points 25 poin[s
MSD Coldwater Creek N/WiF
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Fact Sheet
APPENDIX B RPA RESiLTS:
Parameter CMC*
RWC
CCC*
RWC
n Rangc CV*** MF
RP
Awte*Chronic*max/min Yes/No
Ammonia. Summer 12.10 5.15 1.5 039 33 202/1.] 0.467 1.704 No
Ammonia, Wintcr 12.10 7.69 3.1 0.58 28 25.8/0.6 0.575 1.992 No
Cadmium, Toral Recoverable 823 5.58 0.39 0.63 19 9/0 133 4.678 Ycs
Silver, Total Recoverable 8.69 17A6 N/A N/A 20 30/1 129 4.338 Yes
N/A Not Applicable
Units are (pg/L) unless othcrwisc noted.
If ihc mmbcr of samplcs is grcatcr than 0, thcn Ihc CV valuc must bc uscd in thc WQBEL for hc applicablc constitucn.
Coefficient of Variation (CV) is calculated by dividing the Standard Dcviation of the sample sct by the Mean of the samc
sample set.
RWC Reeeiving Waer Coneentration. It is the wncetration of a toxicant or thc parameter toxicity in the recciving watcr after
mixig (if applicable).
Is thc mmiber of samples.
MF—Multiplying Factoc 99°/o Confidence Level ad 99°/a Probability Basis.
RP —Reasonable Potential. It is where an effluent is projected or calculated to cause an exeursion above a water quality standard
based on a number of factors including, as a minimum, the four factors listed in 40 CFR 122.44(d)(1)(ii).
Reasonable Potential Analysis is conducted as per (TSD, EPA/505/2-90-0O1, Section 33.2). A more detailed version including
calculations of this RPA is available upon request.