STATE OF MAINE Department ofEnvironmental Protection

Paul R. Lepage Patricia W. Aho GOVERNOR COMMISSIONER May I, 2015 Mr. William Littlefield Superintendent 48 MortonAve., Suite A Dover-Foxcroft, ME. 04426 e-mail: wastewtr@dover-foxcroft.org RE: Maine Pollutant Discharge Elimination System (MEPDES) Permit#MEOI00501 Maine Waste Discharge License (WDL) Application #W002633-6C-G-R Final Permit Dear Mr. Littlefield: Enclosed please find a copy ofyour final MEPDES permit and Maine WDL renewal which was approved by the Department ofEnvironmental Protection. Please read this permit/license renewal and its attached conditions carefully. You must follow the conditions in the order to satisfy the requirements oflaw. Any discharge not receiving adequate treatment is in violation ofState Law and is subject to enforcement action. Any interested person aggrieved by a Department determination made pursuant to applicable regulations, may appeal the decision following the procedures described in the attached DEP FACT SHEET entitled 

### "Appealing a Commissioner's LicensingDecision."

Ifyou have any questions regarding the matter, please feel free to call me at 287-7693. Sincerely,

# ~-LQ)Q 

# I

'--' 

## I Gregg Wood Division ofWater Quality Management Bureau ofLand and Water Quality Enc. cc: Tanya Hovell, DEPIEMRO Olga Vergara, USEPA Sandy Mojica, USEPA Marelyn Vega, USEPA
AUGUSTA 17 STATE HOUSE STA'I10N BANGOR PORTI..AND PRESQUE ISLE AUGUSTA, .MAINE 04333-0017 106 HOGru'l ROAD 312 CANCO ROAD 1235 CENTRALDRIVE, SK\WAYPARK (207) 287-3901 FA-X' (207) 287-3435 Bru'lGOR,**~L\JNE** 04401 PORTI..AND, MAINE 04103 PRESQUE ISLE, MAINE 04769-2094 Rl\Y BLDG., HOSPITAL ST. (207) 941-4570 FAX' (207) 941-4584 (207) 822-6300 FAX' (207) 822-6303 (207) 764-6477 FA.'{, (207) 764-1507 web site: www.maine.gov/dcpSTATE OF MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION 17 STATE HOUSE STATION AUGUSTA, ME 04333 DEPARTMENT ORDER

IN THE MATTER OF TOWN OF DOVER-FOXCROFT ) MAINE POLLUTANT DISCHARGE PUBLICLY OWNED TREATMENT WORKS ) ELIMINATION SYSTEM PERMIT DOVER-FOXCROFT, PISCATAQUIS COUNTY ) AND ME0100501 ) WASTE DISCHARGE LICENSE W002633-6C-G-R APPROVAL ) RENEWAL Pursuant to the provisions ofthe Federal Water Pollution Control Act, Title 33 USC, Section 1251, etc. seq. and Maine Law 38 M.R.S.A., Section 414-A et seq., and applicable regulations, the Depmiment ofEnviromnental Protection (the Departmenthereinafter) has considered the application ofthe TOWN OF DOVER-FOXCROFT (Town/permittee hereinafter), with its supportive data, agency review comments, and other related material on file and finds the following facts: APPLICATION SUMMARY The Town has submitted a timely and complete application to the Department for the renewal of combinationMaine Pollutant DischargeElimination System (MEPDES) pem1it #ME0100501/Maine Waste Dischm·ge License (WDL) #W002633-6C-E-R (permit hereinafter) that was issued by the Department on September 29, 2009, for a five-year term. The 9/29/09 permit authorized the discharge ofup to a monthly average flow of0.80 million gallons per day (MGD) ofsecondmytreated sanitary waste waters to the Piscataquis River, Class B, in DoverFoxcroft, Maine. PERMIT SUMMARY This pe1mitting action is carrying forward all the terms and conditions ofthe 9/29/09 except this pe1mit is; 1. Eliminating the monthly average water quality based mass and concentration limits for total lead as a statistical evaluation onthe most cunent 60 months oftest results submitted to the Department indicates the discharge no longer exceeds orhas a reasonable potential to exceed the chronic ambient water quality criteria (AWQC) for total lead. 2. Eliminating Special Condition C, Disinfection, from the permit as the Department has reconsidered the value ofsaid condition.ME0100501 PERMIT Page 2 of 16 W002633-6C-G-R 

### PERMIT SUMMARY (cont'd) 3. Incorporating previously established average andmaximumtechnology based concentration limits for total mercmy so the results can be tracked inthe federal Integrated Compliance Information System (ICIS). 4. Eliminating the option.for the facility to report the NODI 9 code on the Discharge Monitoring Report (DMR) when calculating percent removal when the average influent concentration is less than 200 mg/L based on guidance from the U.S. Enviromnental Protection Agency (EPA). 5. Increasing the water quality based monthly average and or daily mass limitations for ammonia and total copperbased on anundated statistical evaluation and reallocation of loadings oftoxic pollutants in the Piscataquis River watershed. 6. Reducing the monitoring fi:equency for biochemical oxygen demand (BOD) and total suspended solids (TSS) from2/Weekto 1/Week, E. coli bacteria from 2/Weekto 1/Week, total residual chlorine from 1/Dayto 4/Week and pH from 5/Weekto 1/Weekbased on a statistical evaluation ofthe test results for eachparameters for the period January 2011- June 2014. 7. Establishing a monthly average water quality based mass limitation for total phosphorus as the discharge has a reasonable potential to exceed a national in-stream total phosphorus concentration goal ofless than 0.1 mg/L in streams or other flowing waters not discharging directly to lakes or impoundments to prevent nuisance algal growth. ·

### ME0100501 PERMIT Page 3 of 16 W002633-6C-G-R CONCLUSIONS 

### BASED onthe findings inthe attached Fact Sheet dated March 31,2015, and subject to the Conditions listed below, the Department makes the following CONCLUSIONS: 1. The discharge, either byitselfor in combination with other discharges, will not lowerthe quality ofany classified body ofwater below such classification. 2. The discharge, either by itselfor incombination with other discharges, will not lower the quality ofany unclassified body ofwater below the classification that the Department expects to adopt in accordance with state law. 3. The provisions ofthe State's antidegradationpolicy, 38 MRSA Section 464(4)(F), will be met, in that:

a. Existing in-stream water uses and the level ofwater quality necessary to protect and maintain those existing uses will be maintained and protected; b. Where high quality waters ofthe State constitute an outstanding natural resource, that water quality will be maintained and protected;

c. Where the standards ofclassification ofthe receiving water body are not met, the discharge will not cause or contribute to the failure ofthe water body to meet the standards ofclassification; d. Where the actual quality ofany classified receiving water body exceeds the minimum standards ofthe next highest classification, that higher water quality will be maintained and protected; and

e. Where a discharge will result inlowering the existing quality ofany water body, the Department has made the finding, following opportunity for public participation, that this action is necessary to achieve important economic or social benefits to the State.

# ~ I 4. The discharges will be subject to effluent limitations that require application ofbest practicable treatment.ME0100501 PERMIT Page 4 of 16 W002633-6C-G-R ACTION THEREFORE, the DepartmentAPPROVES the application ofthe TOWN OF DOVER­ FOXCROFT, to discharge up to a monthly average flow of0.80 million gallons per day (MGD) ofsecondmy treated sanitary waste waters to the Piscataquis River, Class B, in Dover-Foxcroft. The discharges §hall be suQject to the attached conditions and all applicable standards and regulations including: 1. "Maine PollutantDischarge Elimination System PermitStandard ConditionsApplicable To AllPermits," revised July 1, 2002, copy attached. 2. The attached Special Conditions, including any effluent limitations and monitoring . · requirements. 3. This permit becomes effective upon the date ofsignature below and expires at midnight five (5) years after that date. Ifa renewal application is timely submitted and accepted as complete for processing prior to the expiration ofthis permit, the terms and conditions ofthis pennit and all subsequent modifications and minor revisions thereto remain in effect until a final Department decision onthe renewal application becomes effective. [Maine AdministrativeProcedureAct, 5 M.R.S.A. 

### § 10002 and Rules Concerning the Processing of Applications and OtherAdministrativeMatters, 06-096 CMR2(21)(A) (effective April 1, 2003)]. DONE AND DATED AT AUGUSTA, MAINE, THIS

# 4LDAy OF 

# Mav-../ '2015. 

# 0 COMMISSIONER OF ENVIRONMENTAL PROTECTION

# BY:-----,---=M---'--':-t-:~~-J.c--'=-~4~.-<-o__ f""" Patricia W. Aho, Commissioner

PLEASENOTE ATTACHED SHEETFOR GUIDANCE ON APPEAL PROCEDURES 

# l

I Date ofinitial receipt ofapplication

______,_A,u,.g,u,.st'-"2"-'0,_,,_.,2,0-'-14"-------­ Date ofapplication acceptance

_________cOAc'Cu,g,u,s.,_t2,_,_,1,'-'2,_,0,_,1__,4_;====.::;-;-;,------.-------, 

# Filed MAY 0 42015

State ofMaine Date filed with Board ofEnvironmental Protection

________.!::B=o=ar=d=o=f E=n=v=iro=n"'m"'e"'nt""ai__,_P

. .:cro"'-te"'c"'tio=n This Orderprepared by GREGG WOOD, BUREAU OF LAND & WATER QUALITY ME0100501 2015 4/30/15ME0100501 PERMIT Page 5 of 16 W002633-6C-G-R 

### SPECIAL CONDITIONS A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Thepermittee is authorized to discharge secondary treated waste waters to the Piscataquis River. Such treated waste water discharges shall be limited and monitored by the permittee as specified below. Effluent Characteristic Discharge Limitations Minimum**Monitoriu~?;** Requirements Monthly Weekly Daily Monthly Weekly Daily Measurement Average Average Maximum Average Average Maximum Freguency Saml!le Tvl!e as specified as specified as specified as specified as specified as specified as specified as specified Flow [50050J 0.80 MGDro3J 

### --­ Report (MGD)ro3J 

# -­ --­ --­ Continuous Recorder [RCJ {991991 Biochemical Oxygen 200 300 334 30 mg/L fl9f 45 mg/L fl9f 50 mg/L [19J !/Week/OII07J Composite r 241 Demand (BODs) roo3101 lbs/Day !26l lbs/Day 1267 lbs/Dayr261 (1) BOD, %Removal IB1o1o1 

# -­ -­ -­ 8S%m1 

### --­ -­ !!Monthrou3o7 CalculatercA7 Total Suspended Solids 200 300 334 30 mg/L fi9J 45 mg/L [191 50 mg/L fi9J 1/W eek ro1 ;071 Composite r 241 (TSS) roo53o1 lbs/Day r26 !bs/Day r261 lbs/Day!267 TSS %RemovalOJ fB1011J 

# --­ --­ -­ 85%rm 

### --­ 

# --­ l!MontbroJIJ01 CalculatercA7 E tB

. co z t . ac ena <'lf31633J 

### --­ -­ 

# -­ 64/100 mJ<'l 

# -­ 427/100 ml !/Week fOII07J Grab [GRJ (May 15 -September30) {]3/ fl31 Total Residual Chlorine<•J 

# --­ --­ --­ 0.10 mg/L [J9f 

### --­ 0.20 mg/L

## r 191 4/Week ro<I07J Grab [GRJ !500601 Total Phosl!horus<'l_[00665J II lbs/Day r 261 

### --­ --­ Reportmg/L


### --­ Reportmg/L 2/Monthro2130J Grab (June !-September30) fl91 fl91 JGR1 pH (Std. Units) roo<OOI 6.0-9.0(6 ) fl21 

# --­ --­ 

# --­ --­ --­ 1/Week rouo71 Grab mRtME0100501 PERMIT Page 6 of 16 W002633-6C-G-R SPECIAL CONDITIONS A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd)- OUTFALL #001 Effluent Characteristic Monthly Average as specified Weekly Average as specified Discharge Limitations Daily Monthly Maximum Average as specified as specified Weekly Average as specified Daily Maximum as specified Minimum MonitorinaRequirements Measurement

Freguencv SamJ!Ie TyJ!e as specified as specified Ammonia {00610J (June I--September 30) 279 lbs!Day £26J --­ --­ Report mg!L £191 --­ --­ 2N ear£021YRJ Composite f24J Copper (Total) 1010427 0.088 lbs!Day 

# -­ 0.076 lbs!Day Report ug!L f2BJ 

# --­ Report ug!L !28! I!Quarterro119DJ Composite !24/ Mercury (Total)(?) !719001 

# --­ --­ --­ 16.9 ng!L (3M/ 

### --­

' 25.3 ng!L [3M/ INear (01/YR/ Grab (GR/ SURVEILLANCE LEVEL TESTING-Beginning uponpermitissuance and lasting through 24 months priorto permit expiration (Years 1, 2 & 3 ofthe term ofthe permit) and commencing again 12 months priorto permit expiration (Year 5 ofthe term ofthe permit), the permittee shall conduct surveillance level testing as follows: Effluent Characteristic Discharae Limitations Monitorina Reauirements Monthly Weekly Daily Monthly Weekly Daily

. Measurement Sample Averaae Averaae Maximum Averaae Averaoe Maximum Frenuencv Tvoe Whole Effluent Toxicity (WET) C>J

A-NOEL

Ceriodaphnia dubia [TDA3BJ 

## - --­ 

# -­ - --­ Report % [231 1/Year /011YRJ Composite /241 Salve/inus fontinalis [TDA6FJ 

### -­ 

# -­ - 

### --­ 

# -­ Report % !23J 2/Year I021YRJ Composite /241 C-NOEL

Ceriodaphnia dubia /TBP3BJ 

### --­ 

# -­ -­ --­ 

## - Report % /231 1/Year /01/YRJ Composite /241 Salvelinus fontinalis [TBQ6FJ 

# -­ --­ 

# --­ --­ --­ 5.3% /23] 2/Year /021YRJ Composite /241 Analytical Chemistry

### <'· 11> 

## - Report ug/L 1/Year f011YRJ Composite/ Grab [51477] 

### -­ - 

# -­ -­ [28] 124/GRI

-·ME0100501 PERMIT Page 7 of 16 W002633-6C-G-R 

### SPECIAL CONDITIONS A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd)- OUTFALL #001AC 1) 

### SCREENING LEVEL TESTING -Beginning 24 monthspriorto permitexpiration and lasting through 12 monthspriorto permit expiration (Year 4 ofthe term ofthe permit) and every five years thereafter ifa timely request for renewal has beenmade and thepermit continues in force, or is replaced by a permitrenewal containing this requirement, the permittee shall conduct screening level testing as follows: Effluent Characteristic Discharae Limitations Monitorina Requirements Monthly Averaae Weekly Averaqe Daily Maximum Monthly Averaqe Weekly Averaae Daily Maximum Measurement Frenuencv Sample Tvoe Whole Effluent Toxici!Y (WET) (S)

A-NOEL

Ceriodaphnia dubia [TDA3BJ 

# -- --- 

## - -- 

## - Report % !231 1/Quarter f01190J Composite /241 Salve/inus fontinalis [TDA6FJ C-NOEL 

# --- -- 

# -- --- 

## - Report % !231 1/Quarter /01190J Composite /241

Ceriodaphnia dubia [TBP3BJ 

### --- --- 

### --- . 

### --- Report % /231 1/Quarter /01190J Composite /241 Salve/inus fontinalis [TBQ6FJ 

### -- --- 

### -- --- --- 5.3% [23] 1/Quarter f01190J Composite /241 Analytical Chemistry(O,llJ [51477] 

### --

--- - --- 

### --- Report ug/L [28] 1/Quarter [01190] Composite/ Grab f24/GR7 11 Priority Pollutants(10' {500081 ) 

## -

--- 

### -- --- 

# --

' Report ug/L /28] 1/Year

__ [01/YR] Composite/ Grab [24/GR]ME0100501 PERMIT Page 8 of16 W002633-6C-G-R 

### SPECIAL CONDITIONS A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Footnotes: 

### Sampling Locations: Influent sampling for BODs and TSS shall be sampled before the first treatment process on a year-round basis. 

### Effluent sampling shall be sampled for all parameters after the last treatment process (including dechlorination) ona year-round basis. Any change in sampling location(s) must be reviewed and approved by the Department in writing. 

### Sampling- Sampling and analysis must be conducted in accordance with; a) methods approved in40 Code ofFederal Regulations (CFR) Part 136, b) alternative methods approved by the Department in accordance with the procedures in40 CFRPart 136, or c) as otherwise specified by the Department. Samples that are sent out for analysis shall be analyzed by a laboratory certified by the State ofMaine's Depmiment ofHuman Services. Samples that are sent to another POTW licensed pursuant to Waste discharge licenses, 38 M.R.S.A. 

### §413 are subject to the provisions and restrictions ofMaine Comprehensive andLimited Environmental Laboratory Certification Rules, 10-144 CMR263 (last amended February 13, 2000). Laboratory facilities that analyze compliance samples in-house are subject to the provisions and restrictions ofthe Maine Comprehensive andLimited Laboratory Certification Rules, 10-144 CMR263 (last amended Februmy 13, 2000). 

### 1. Percent removal- The treatment facility shall maintain a minimum of85 percent removal ofboth BODs and TSS. Compliance with the limitation shall be based on a twelve-month rolling average. Calendar monthly average percentremoval values shall be calculated based on influent and effluent concentrations. For the purposes ofthis permitting action, the twelve-month rolling average calculation is based on the most recent twelve-month period. 2. E. coli 

### bacteria -Limits are seasonal and apply between May 15th and September 30th of each calendar year. The Departmentreserves the right to require disinfection on a year-round basis to protectthe health and welfare ofthe public. 3. E. coli 

### bacteria- The monthly average limitation is a geometric mean limitation and shall be calculated and reported as such. 4. 

### Total Residual Chlorine- Limitations and monitoring requirements are applicable whenever elemental chlorine orchlorh;e based compounds are being used to disinfect the discharge. The permittee shall utilized approved test methods that are capable of bracketing the limitations in this permit.ME0100501 PERMIT Page 9 of 16 W002633-6C-G-R 

### SPECIAL CONDITIONS A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Footnotes: 5. 

### Phosphorus (Total)- There shall be at least 10 days between sampling events. See 

### Attachment A ofthis permit for a Depmimentprotocol for total phosphorus. 6. 

### pHRange Limitation- The pH value ofthe effluent shall notbe lower than 6.0 SU nor higher than 9.0 SU at any time unless these limitations are exceeded due to natural causes. 7. 

### Mercury- All mercmy sampling (1/Yem·) required to determine compliance with interim limitations established pursuant to Interim EffluentLimitations and Controlsfor the Discharge oj}vfercwy, 06-096 CMR 519 (last amended October 6, 2001) shall be conducted in accordance with EPA's "clean sampling techniques" found in EPA Method 1669, Sampling Ambient Water For Trace Metals At EPA Water Quality Criteria Levels. All mercury analyses shall be conducted in accordance with EPAMethod 1631E, Determination ofMercury in Water by Oxidation, Purge and Trap, and Cold Vapor Fluorescence Spectrome!Jy. See 

### Attachment B, Effluent 1vfercwy Test Report, ofthis permit for the Department's form for reporting mercmytest results. The limitation in the monthly average column in table Special Condition A ofthis pennit is defined as the arithmetic mean ofall the mercury tests conducted for the facility utilizing sampling Methods 1669 and analysis Method 1631E. 8. 

### Whole effluent toxicity (WET) testing- Definitive WET testing is a multi-concentration testing event (a minimum offive dilutions bracketing the critical acute and chronic thresholds of9.3% and 5.3% respectively), whichprovides a point estimate oftoxicity in terms ofNo Observed Effect Level, commonlyrefened to as NOEL orNOEC. A-NOEL is defined as the acute no observed effect level with survival as the end point. C-NOEL is defined as the chronic no observed effect le:vel with survival, reproduction and growth as the end points. The critical acute and chronic thresholds were derived as the mathematical inverse ofthe applicable acute and chronic dilution factors of 10.7:1 and 18.8:1 respectively. See 

### Attachment C ofthis permit for a copy ofthe Department's WET reporting form.

a. 

### Surveillance level testing- Beginning uponpermit issuance and lasting through 24 months prior to permit expiration (Years 1, 2 & 3 ofthe term ofthe pennit) and commencing again 12 months prior to permit expiration (Year 5 ofthe tetm ofthe petmit), the permittee shall conduct surveillance level WET testing at a minimum frequency ofonce peryear (!/Year) utilizing the water flea (Ceriodaphnia dubia) and twice per year (2/Year) utilizing the brook trout (Salvelinus fontinalis).

### ME0100501 PERMIT Page 10 of 16 W002633-6C-G-R 

### SPECIAL CONDITIONS A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Footnotes: b. 

### Screening level testing -Beginning 24 months prior to permit expiration and lasting through 12 months prior to permit expiration (Year 4 ofthe term ofthe permit) and every five years thereafter ifa timely request for renewal has been made and the permit continues inforce, or is replaced by a permit renewal containing this requirement, the pennittee shall conduct screening level WET testing at a minimum frequency ofquarterly (1/Quarter) for the water flea (Ceriodaphnia dubia) 

### and the brook trout (Salvelinus fontinalis). 

### WET test results must be submitted to the Depatiment not later than the next Discharge Monitoring Report (DMR) required by the permit, provided, however, that the permittee may reviewthe toxicity reports for up to 1 0 business days oftheir availability before submitting them. The pennittee shall evaluate test results being submitted and identifY to the Department possible exceedences ofthe critical acute and chronic water quality thresholds specified above. Toxicity tests must be conducted by an experienced laboratmy approved by the Department. The laboratory must follow procedures·asdescribed in the following USEPA methods manuals as modified by Department protocol for the brooktrout. See 

### Attachment D ofthis permit for the Department protocol.

a. Shmi TermMethods for Estimatingthe Chronic Toxicity ofEffluent and Receiving Water to Freshwater Organisms, Fourth Edition, October 2002, EPA-821-R-02-013. b. Methods for Measuring the Acute Toxicity ofEffluent and Receiving Waters to Freshwater and Marine Organisms, FifthEdition, October 2002, EPA-821-R-02-012. Each time a WETtest is performed, the**petmitt~e** 

### shall sample and analyze for the parameters in the WET Chemistry and the Analytical Chemistry sections ofthe Department form entitled, Maine Department of EnvironmentalProtection, WETand Chemical Specific DataReportForm. 

### See 

### Attachment E ofthis permit. 9. 

### Analytical chemistry- Refers to a suite ofparameters listed in 

### Attachment E ofthis permit.

a. 

### Surveillance level testing- Beginning upon permit issuance and lasting through 24 months prior to petmit expiration (Years I, 2 & 

### 3 ofthe term ofthe petmit) and commencing again 12 months prior to pennit expiration (Year 5 ofthe term ofthe permit), the petmittee shall conduct surveillance level analytical chemistry testing at a minimum frequency ofonce peryear (1/Y ear).ME0100501 PERMIT Page 11 of 16 W002633-6C-G-R 

### SPECIAL CONDITIONS A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Footnotes: 

### b. Screening level testing- Beginning 24 months priorto permit expiration and lasting through 12 months prior to permit expiration (Year 4 ofthe term ofthe permit) and eve1y five years thereafter ifa timely request for renewal has beenmade and the permit continues in force, or is replaced by a pennitrenewal containing this requirement, the permittee shall conduct analytical chemistly testing at a minimum frequency ofonce per calendar quarter (1/Quarter) for four consecutive calendar quarters. 10. 

### Priority pollutant testing- Refers to a suite ofparameters listed in 

### Attachment E of this permit.

a. 

### Surveillance level

- Testing is notrequired pursuant to 06-096 CMR Chapter 530. b. 

### Screening level testing -Beginning24 months prior to pe1mit expiration and lasting through 12 months prior to permit expiration (Year 4 ofthe term ofthe permit) and eve1y five years thereafter ifa timely request for renewal has been made and the permit continues in force, oris replaced by a pe1mit renewal containing this requirement, the permittee shall conduct screening level priority pollutant testing at a minimum frequency ofonce peryear (1/Year), except for those analytical chemistry parameter(s) otherwise regulated in this pe1mit. 11. 

### Priority pollutant and analytical chemistry

- Testing shall be conducted on samples collected atthe same time as those collected for whole effluent toxicity tests when applicable. Prioritypollutant and analytical chemistry testing shall be conducted using methods that permit detection ofa pollutant at existing levels in the effluent or that achieve minimum reporting levels ofdetection as specified by the Depmtment. See 

### Attachment E ofthis pe1mit for a list ofthe Depmtment's most cun·ent rep01iing limits 

### (RL's). Test results must be submitted to the Depmtment not later than the next Discharge Monitoring Report (DMR) required by the permit, provided, however, that the permittee mayreviewthe toxicity reports for up to I 0 business days oftheir availability before submitting them. The permittee shall evaluate test results being submitted and identifY to the Department, possible exceedences ofthe acute, chronic orhuman health AWQC as established in

### Swface Water Quality Criteria for Toxic Pollutants, 06-096 CMR 584 (effective October 9, 2005). Forthe purposes ofDMRreporting, enter a "1" for yes, testing done this monitoring period or "NODI-9"monitoring notrequired this period. . i



# r

### ME0100501 PERMIT Page 12 of16 W002633-6C-G-R 

### SPECIAL CONDITIONS B. NARRATIVE EFFLUENT LIMITATIONS 1. The effluent shall not contain a visible oil sheen, foam or floating solids at any time which would impair the uses designated for the classification ofthe receiving waters. 2. The effluent shall not contain materials in concentrations or combinations which are hazardous or toxic to aquatic life, or which would impair the uses designated for the classification ofthe receiving waters. 3. The discharges shall not cause visible discoloration orturbidity inthe receiving waters which would impair the uses designated for the classification ofthe receiving waters. 4. Notwithstanding specific conditions ofthis pennitthe effluent must not lower the quality ofany classified body ofwater below such classification, or lower the existing quality of any body ofwater ifthe existing quality is higher than the classification. 

### C. TREATMENTPLANTOPERATOR The person who has the management responsibility over the treatment facilitymust hold a Grade 

### II certificate (or higher) or must be a Maine Registered Professional Engineer pursuantto Sewerage Treatment Operators, 

### Title 32 M.R.S.A., Sections 4171-4182 and Regulations for Wastewater Operator Certification, 

### 06-096 CMR 531 (effective May 8, 2006). All proposed contracts for facility operation by any person must be approved by the Department before the permittee may engage the services ofthe contract operator. 

### D. LIMITATIONS FORINDUSTRIAL USERS Pollutants introduced into the waste water collection and treatment system by a non-domestic source (user) shall not pass through or interfere with the operation ofthe treatment system. The permittee shall conduct an Industrial Waste Survey (IWS) at any time a new industrial user proposes to discharge within itsjurisdiction, an existing user proposes to make a significant change inits discharge, or, at an alternative minimum, once eve1y permit cycle and submit the results to the Depmiment. The IWS shall identity, in terms ofcharacter and volume ofpollutants, any Significant Industrial Users discharging into the POTW subject to Pretreatment Standards under section 307(b) ofthe federal Clean Water Act, 40 CFR Part 403 (general pretreatmentregulations) orPretreatmentProgram, 

### 06-096 CMR 528 (last amended March 17, 2008).

### ME0100501 PERMIT Page 13 of 16 W002633-6C-G-R SPECIAL CONDITIONS E. AUTHORIZED DISCHARGES 

### The permittee is authorized to discharge only in accordance with: I) the permittee's General Application for Waste Discharge Permit, accepted for processing on August 21, 2014; 2) the terms and conditions ofthis permit; and 3) only from Outfall #001. Discharges of waste water from any otherpoint source are not authorized under this permit, and shall be reported in accordance with Standard Condition B(5)(Bypass) 

### ofthis permit. F. NOTIFICATION REQUIREMENT 

### In accordance with Standard Condition D, the permittee shall notifY the Depmiment ofthe following. I. Any introduction ofpollutants into the waste water collection and treatment system from an indirect discharger in a primmyindustrial category discharging process waste water; and 2. Any substantial change in the volume or character ofpollutants being introduced into the waste water collection and treatment system by a source introducing pollutants into the system at the time ofpermit issuance. For the purposes ofthis section, notice regarding substantial change shall include information on: (a) the quality and quantity ofwaste water introduced to the waste water collection and treatment system; and (b) any anticipated impact caused by the change inthe quantity or quality ofthe waste water to be discharged from the treatment system. G. WET WEATHERFLOW MANAGEMENT PLAN 

### The treatment facility staffshall maintain a current written Wet Weather FlowManagement Plan to direct the staffon howto operate the facility effectively during periods ofhigh flow. The Depmiment acknowledges that the existing collection system may deliver flows in excess ofthe monthly average design capacity ofthe treatmentplant during periods ofhigh infiltration and rainfall. Within 90 days ofcompletion ofnew and or substantial upgrades ofthe waste water treatment facility, 

### the permittee shall submit to the Department for review and approval, a new orrevised Wet Weather Management Plan which confonnsto Department guidelines for such plans. The revised plan shall include operating procedures for a range ofintensities, address solids handling procedures (including septic waste and other high strength wastes if applicable) and provide written operating and maintenance procedures during the events. The permittee shall review their plan annually 

### and record any necessary changes to keep the planup to date.

### ME0100501 PERMIT Page 14 of 16 W002633-6C-G-R SPECIAL CONDITIONS H. OPERATION & MAINTENANCE (O&M) PLAN This facility shall maintain a current written comprehensive Operation & Maintenance (O&M) Plan. The plan shall provide a systematic approach by which the permittee shall at all times, properly operate and maintain all facilities and systems oftransport, treatment and control (and related appurtenances) which are installed or used bythe permittee to achieve compliance with the conditions ofthis permit. By December 

### 31 ofeach year,.or within 90 days ofany process changes or minor equipment upgrades, the permittee shall evaluate and modifY the O&M Plan including site plan(s) and schematic(s) for the waste water treatment facility to ensure that it is up-to-date. The O&M Plan shall be kept on-site at all times and made available to Department and EPA personnel upon request. Within 90 days ofcompletion ofnew and or substantial upgrades ofthewastewater treatment facility, the pe1mittee shall submit the updated O&M Plan to their Department inspector for review and comment. I. 

### DISPOSAL OF TRANSPORTED WASTE INTO THE WASTE WATER TREATMENT FACILITY The permittee is prohibited from accepting transported waste for disposal into anypart or parts ofthe waste water disposal system. "Transported wastes" means any liquid nonhazardous waste delivered to a wastewater treatment facility by a truck or other similar conveyance that has different chemical constituents ora greater strength than the influent described onthe facility's application for a waste discharge license. Such wastes may include, but are not limited to septage, industrial wastes or other wastes to which chemicals in quantities potentially harmful to the treatment facility or receiving water have been added. 

### J. 06-096 CMR 530(2)(D)(4) STATEMENTFORREDUCED/WAIVED TOXICS TESTING By December 

### 31 ofeach calendaryear, the permittee shall provide the Department with a certification describing any ofthe following that have occmTed since the effective date ofthis permit[ICIS Code 75305]: 

### See AttachmentF ofthe Fact Sheet ofthis pe1mit for an acceptable ce1iification form to satisfy this Special Condition. I. Changes in the number or types ofnon-domestic wastes contributed directly or indirectly to the wastewater treatment works that may increase the toxicity ofthe discharge; 2. Changes in the operation ofthe treatmentworks that may increase the toxicity ofthe discharge; andME0100501 PERMIT Page 15 of16 W002633-6C-G-R 

### SPECIAL CONDITIONS 

### J. 06-096 CMR 530(2)(D)(4) STATEMENT FOR REDUCED/WAIVED TOXICS TESTING 3. Changes in industrial manufacturing processes contributing wastewater to the treatment works that may increase the toxicity ofthe discharge. Further, the Department mayrequire that annual WET or priority pollutant testing be reinstituted ifit determines that there have been changes inthe character ofthe discharge or if annual certifications described above are not submitted. (d) Changes in storm water collection or inflow/infiltration affecting the facility that may increase the toxicity ofthe discharge. (e) Increases in the type or volume ofhauled wastes accepted bythe facility. The Depmiment reserves the right to reinstate annual (surveillance level) testing or other toxicity testing ifnew information becomes available that indicates the discharge may cause orhave a reasonable potential to cause exceedences ofambient water quality criteria/thresholds. 

### K. MONITORING AND REPORTING Monitoringresults obtained during the previous month shall be summarized for each month and repmied on separate Discharge Monitoring Report (DMR) forms provided bythe Department and postmarked on or before the thirteenth (13th) day ofthe month or handdelivered to a DepmimentRegional Office suchthat the DMR's are received by the Depmiment on orbefore the fifteenth (15t11) day ofthe monthfollowing the completed reporting period. A signed copy ofthe DMRand all otherreports required herein shall be submitted to the following address: Depmiment ofEnvironmental Protection Eastern Maine Regional Office Bureau ofLand and Water Quality Division ofWater Quality Management 106 Hogan Road Bangor, Maine 04401ME0100501 PERMIT Page 16 of 16 W002633-6C-G-R 

### SPECIAL CONDITIONS K. 

### MONITORING AND REPORTING (cont'd) Alternatively, ifyou are submitting an electronic DMR (eDMR), the completed eDMRmust be electronically submitted to the Department by a facility authorized DMR Signatory not later than close ofbusiness onthe 15th day ofthe month following the completed reporting period. Hard Copy documentation submitted in support ofthe eDMR must be postmarked on or before the thirteenth (13th) day ofthe month or hand-delivered to the Department's Regional Office suchthat it is received bythe Department on orbefore the fifteenth (15th) day ofthe month following the completed reporting period. Electronic documentation in suppoti ofthe eDMRmust be submitted not later than close ofbusiness on the 15th day ofthe month following the completed reporting period. 

### L. REOPENING OF PERMIT FOR MODIFICATIONS Upon evaluation ofthe tests results ormonitoring requirements specified in Special Conditions ofthis permitting action, new site specific information, or any other pertinent test results or information obtained during the term ofthis permit, the Department may, at anytime and with notice to the permittee, modifY this permit to; 1) include effluent limits necessary to control specific pollutants orwhole effluent toxicity where there is a reasonable potential that the effluent may cause water quality criteria to be exceeded, (2) require additional effluent and or ambient water quality monitoring ifresults on file are inconclusive; or (3) change monitoring requirements orlimitations based onnewinformation. 

### M. SEVERABILITY In the event that any provision(s), orpartthereof, ofthis petmitis declared to be unlawful by a reviewing court, the remainder ofthe petmit shall remain in full force and effect, and shall be construed and enforced in all aspects as ifsuch unlawful provision, or partthereof, had been omitted, unless otherwise ordered by the comi.

# ATTACHMENT A 

# I 

# t

' 

### I 

# k I r; 

# r . I ! I 

# r I I I
I 

# I I I 

# l
[

I

### Protocol for Total Phosphorus Sample Collection and Analysis for Waste Water Effluent



# -· Approved Analytical Methods: EPA 200.7 (Rev. 44), 365.1 (Rev. 2.0), (Lachat), 365.3, 365.4; SM 3120 B, 4500-P 8.5, 4500-P E, 4500-P F, 4500-P G, 4500-P H; ASTM 0515-88(A), 0515-88(8); USGS 1-41!71-97, 1-4600-85, 1-4610-91; OMAAOAC 973.55, 973.56 (laboratory must be certified for any methoq performed) Sample Collection: The Maine DEP is requesting that total phosphorus analysis be conducted on composite effluent samples, unless a facility's Permit specifically designates grab sampling for this parameter. Facilities can use individual collection bottles or a single jug made out of glass or polyethylene. Bottles and/orjugs should be cleaned prior to each use with dilute HCL. This cleaning should be followed by several rinses with distilled water. Commercially purchased, pre-cleaned sample containers are an acceptable alternative. The sampler hoses should be cleaned, as needed. Sample Preservation: During compositing the sample must be at 0-6 degrees C (without freezing). If the sample is being sent to a commercial laboratory or analysis cannot be performed the day of collection then the sample must be preserved using· H2S04 

### to obtain a sample pH of<2 su and refrigerated at 0-6 degrees C (without freezing). The holding time for a preserved sample is 28 days. Note: Ideally, Total Psamples are preserved as described above. However, ifa facility· Is using a commercial laboratory then that laboratory may choose to add acid to the sample once it arrives at the laboratory. The Maine DEP will accept results that use either ofthese preservation methods. Laboratory QAIQC: Laboratories must follow the appropriate QAIQC procedures that are described in each of the approved methods. Sampling QAIQC: If a composite sample is being collected using an automated sampler, then once per month run a blank on the composite sampler. Automatically, draw distilled water Into the sample jug using the sample collection line. Let this water set in the jug for 24 hours and then analyze for total phosphorus. Preserve this sample as described above.

Maine DEP, July 1, 2014 Page C1

# ATTACHMENTB 

# I

### ------



# --------------------- Maine Department of Environmental Protection



### Effluent Mercury Test Report

Name ofFacility: Federal Permit#ME Pipe# _______ Purpose ofthis test: § Compliance monitoring for: Supplemental or extra test Initial limit determination year

____calendar quarter

____
SAMPLE COLLECTION INFORMATION SamplingDate: Sampling time: AM/PM mm dd yy Sampling Location: Weather Conditions: Please describe any unusual conditions with the influent or at the facility during or preceding the time ofsample collection:
Optional test
- not required but recommended where possible to allow for the most meaningful evaluation ofmercury results: Suspended Solids

___mg/L Sample type: ____Grab (recommended) or Composite ANALYTICAL RESULT FOREFFLUENT MERCURY Name ofLaboratory: Date ofanalysis: Result: ug/L (PPT)



### ---­ Please Enter Effluent Limits for your facility Effluent Limits:**Average~** ng/L**Maximum~** ng/L



### ---­ Please attach any remarks or comments from the laboratory that may have a bearing on the results or their interpretation. Ifdu licate samples were taken at the same time please report the average. CERTIFICATION I certifiy that to the best ofmy knowledge the foregoing information is correct and representative of conditions atthe time ofsample collection. The sample for mercury was collected and analyzed using EPA Methods 1669 (clean sampling) and 1631 (trace level analysis) in accordance with instructions from the DEP. By: Date: Title:
PLEASE MAIL THIS FORM TO YOUR ASSIGNED INSPECTOR
DEPLW 0112-82007, Revised July 2009 Printed 7/14/2009

# ATTACHMENT C 

# I r I 

# I

I ) I I 

## b I 

# r I 

## i I
I I 

### I 

# r i ! 

# I I I I 

# I I 

# I I 

# I 

# I 

# rMAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION WHOLE EFFLUENT TOXICITY REPORT FRESH WATERS



# --------------------------**'ME!'\Jii$!\l~iil~t!Cii·:·•-···**
-------------- 

### :**F~91~1lY:R~P~hl~dV~·:**

### ::':**.-:-::-:-:--::---::--:-:-c:-:c:-~$.igpat~i~~;:o** !-'-_,: Bysigning this form, I attest that to the best ofmyknowledge that the informjltion proYided is true, accurate, and collltJiete.**:.v~<WiYt~l~p1foli<l** 

### 11,.-....·-**l:l~kcou~ct~iii"' f.ti~tii'tfe!f!~4**  

## <ir::rr

--------------------**----m-w~d~M~n~· ----Jru-ru~d~M~y-y** **i¢1)1<){i~t~a?•** .........__________**'P~~4i~ri~~~¢4t':··~·**

## _________ R'citilki '

.. ',';': :· •-: ,,,;.;} '''**;::1<%:'~(tj~~~tfH1! ,~"**  ,i:·fH water flea trout A-NOELr-----i'-------1 C-NOEL_**L-------~------~**


# .... .. ......... '.•, ,,,..,;J_i·CJ ., ' ' ,

## ..... ,

## .....**;;.~·::·** ···•-•ei':'i•:;•·' i !cT 

## •T: >T• ,,, 

# •·····. "'-'. % survtval no. young %survival final ' 'I

### ·~~~~l;t (mg) QC standard A>90 C>80 >15/femalc A>90 C>80 > 2% increase lab control receiving watc1· control cone. 1 { %) cone. 2 { %) cone. 3 { %) cone. 4 ( %) cone. 5 ( %) cone. 6 ( %) stat test used



### .. place * next to values statistically dtffe1 ent f1 om conhols for trout show final wt and % incr for both controls 

### · ·**::Hi;t!;,;bU'~~i~Hi~~:~:n:::i:** 

### "-·· '1J-t1:**<:~;~!:L::L:E: !:liJ~** **~:¢Wti!r:!i!: ;-::~~;:~:!~-~** 

### _,, A-NOEL C-NOEL A-NOEL C-NOEL toxicant I date limits (mg/L) results (mg!L)**!i--!_C~~ilieh't~:** '''' ''''' ''''' '' '' '''

Laboratory conducting test 

### :coi!ijJ@JiN;lli\i; ; : i'

# .,,j

_________________**'.G<:Ji>il>~iiY'JWl1;Ji!iW!~ i~rmi~ijji)j;~--------------------** **-M~]iini'>\<id!~·:••··· cl.iyi~iii\~iztli**  

### ,, ••..... Report\VET chemistry on DEP Form "ToxSheet (Fresh \Vater Version),**~larch** 2007."

OEPLW0741-B2007, Revised March 2007 Printed 1/22/2009

# ATTACHMENTD

I I 

# I**~** 

### I 

# r

! I 

# I 

# ! I k

## Salmonid Survival and Growth 

## Test The Salmonid survival and growth test must follow the procedures for the fathead minnow larval survival and growth tests detailed in USEPA's freshwater acute and chronic methods manuals with the following Depattmentmodifications: Species -BrookTrout, Salvelinus fontinalis, orother salmonid approved by the Department. Age

- Less than six months old for the first test each year and less than twelve months for subsequent tests. Size

- The largest fish must not be greater than 150% ofthe smallest. Loading Rate-< 0.5 g/1/day Feeding rate- 5% ofbodyweight 3 times daily (15%/day) Temperature- 12° ± 1°C Dissolved Oxygen

- 6.5 mg/1 ,aeration ifneeded with large bubbles (> I mm diameter) at a rate of<100/min Dilution Water- Receivingwater upstream ofdischarge (or other ambient water approved bythe Department) Dilution Series -A minimum of5 effluent concentrations (including the instream waste concentrations bracketing acute and chronic dilutions calculated pursuant to Section D); a receiving water control; and control ofknown suitable water quality Duration

- Acute = 48 hours -Chronic= 10 days minimum Test acceptability- Acute= minimum of90% survival in 2 days -Chronic= minimum of80% survival in 10 days; minimum growth of20 mg/gm/d dry weight in controls, (individual fish weighed, dried at I00°C to constant weight and weighed to 3 significant figures)

# ATTACHMENT E 

# l I

I ! ! 

## ' 

## I

I 

### I '

### ~ 

# I 

# l

lPrinted 5/5/2014 Maine Department of Environmental Protection WET and Chemical Specific Data Report Form This form is for reporting laboratory data and facility information. Official compliance reviews will be done by DEP.

Facility Name-----------

Licensed Flow(MGO)

### ~ Acute dilution factor Chronic dilution factor Facility Representative Signature ::c::::::::-:;:;:c:::::::::=-;:-:::-::-::::::::::::-:::,-.,:::-:-:::::­ MEPDES# Pipe#

# ===== To the best of my knowledge this information is true, accurate and complete. Flowfor Day (MGD)'''I I FlowAvg. for Month (MGD)12

## '1
.·-1
Date Sample Collected I I Date Sample Analyzed I I Human health dilution factor Criteria type: M(arine) or F{resh) f Laboratory Telephone
-------­ IIIF!'M'IT1Tiill't;"1B''"**'>'"~'' 1** **'1'1Jl. '~C~""~'oo<TI** **J.J.J.WJ.\liiWiL1il~~~9ll!!§~~ll** ..**4.L~** ..**~;~,** Address-----------------­ LabConrect

__________________ lab ID #

------­ ERROR WARNING I Essential facility FRESH WATER VERSION information is missing. Please check Receiving required entries in bold above. Please see the footnotes on the last page. Water or {ug/1. oras noted)

· ,,,;, jWHOLE EFFLUENT TOXICITY**~L,};** J; 

## i:i'':

# :+:**;J:U!iJ::illJI,);~),~',lfLJ:J[j,'JU** 

### ;:; 

## .JJ:

Trout- Chronic -a- Acute I.Water**'=lea~** G_bronic 

# I
...........**]ijli!:~~~:**WET
•tal Organic Carbon (mg/L __@; •tal Solids (mg/L rota!**Suspended~** 1 g 1 :..Jkalinity (mg/L) ;pecific Conductance (umhos) rota! Hardness (mg/L) rota! Magnesium (mg/L) I rotal Calcium {mg/L)**]~'lUi**ANALYTICAL CHEMISTRY ('l 

# I Also dothese tests on the effluent wi: WET. Testing on the receiving water is

tiona! ;g Limit _(@]

A\IAH ARI !:;_ (3a) LEAD 

# I M**INIC~** M SILVER W \ZINC 5 Revised April 24, 2014 Page 1 DEPLW 0740-G2014Printed 5/5/2014 Maine Department of Environmental Protection WET and Chemical Specific Data Report Form This form is for reporting laboratory data and facility information. Official compliance reviews will be done by DEP

.

---­ ,..--­ .:.U.IbtrPRIORITY POLLUTANTS 141

M ANTIMON'

., BERYLLIUM n·; iii! MERC 'J '­**~F!** FNII
IOL 

# r I"···DIMETHYLPHENOL A 2,4-DINITROPHENOL :HLOROPHENOL IITROPHENOL DINITR0-0-CRESO 

### lA itrophenol) IITROPHENOL "

.. --- ..**~RESOL** 

### lA :::HL L iCH 

### IDE U)UICH 

### IDE -OIPHEN' 5'NE

M)DICH 

### I"" I 1,4-(P)DICHI
-·· - '-DINITRC 

### i.!f!Jj



### 1 !Jj.i:iU'fi:::U

g Lim



### •**A~**

25 2( 5 2.

5 2Q. 

### 'J. 

## ,i [U[i;

it



### 1 1 1 1 1 1 1 1 1 1

lt:SN**~~,;.5-Uli.,;HLUKVI::II::I\ BN3.4-BENZO(B)FLUO,~**  .. ,,**'~"~** "" 1• ·SROMOPHENYLPHENYL ETHER CHLOROPHENYL PHENYL ETHE**~ENAPHTHENE** :ENAPHTHYLENE lN lN 

### 6N
..........**~** 

### - BN BENZO G,H,I PERYLENE BN BENZOIKlFLUORANTHENE BN SIS 2-CHLOROETHOXY METHANE SN SIS 2-CHLOROETHYL)ETHER SN SIS 2-CHLOROISOPROPYL ETHER BN BIS(2-ETHYLHEXYL)PHTHALATE

•**PHTH~** YL PHTHALATE Revised April24, 2014 j "**~**

o 5 " 6 I I

P I I I

age2 I I I I .I I I

D I

EPLW 0740-G2014Printed 5/5/2014 Maine Department of Environmental Protection WET and Chemical Specific Data Report Form This form is for reporting laboratory data and facility information. Official compliance reviews will be done by DEP.**~ ~**  ,,. N I''I;JV"\' HEXA ........... -'HLOROBENZENE CHLOROBUTADIENE

I'll lnEXACH NINDENC



### IBN fPYLAMINE 'LAMINE LAMINE 

### IBN:::: IBN
4"-C 0. 

### D. 05 

### Os 0§_**.~BH( B-BH~**  05

# ~ P P P

-D-­ D·Bf DIEL :IN END ULFAN SULFAi END**~ ~AL**  )R ;HLOR •16 221 232 0 0 _Q

0 0 O

.0 .1 £ .0 ,1 .Q

-D-­ ' l-1 

## v V 1,1,2-TRicHCofioE· 1,1-DICHLOROETH! 1, 1-DICHLOROETH' ANE '(1'1­ v V v dichloroethene) 1.2-DICHLOROI 1,2-.Q! 3 6_ V V '' 1v ·1**,L.~** I t'(AN'='·Uil,; trans-dich!oroethE 1,3-DICHLOROPROPYLENE (1,3­ dichloroorooene)

.... "'' '""-'""'' oLOROETHYLVINYL ETHER '(1,2­ _§.. 5
Revised April 24, 2014 Page3 DEPLW0740-G2014

--------- ------ --- -· ---­**-------·-~**Printed 5/5/2014 Maine Department of Environmental Protection WET and Chemical Specific Data Report Form This form is for reporting laboratory data and facility information. Official compliance reviews will be done by DEP. 

### v v ACROLEIN ACRYLONITRILE NA NA v v v BENZENE BROMOFORM CARBON TETRACHLORIDE 5 5 5 v v v CHLOROBENZENE CHLORODIBROMOMETHANE CHLOROETHANE 6 3 5 v v v CHLOROFORM DICHLOROBROMOMETHANE ETHYLBENZENE 5 3 10 v v v
v v v v METHYL BROMIDE Bromomethane METHYL CHLORIDE Chloromethane) METHYLENE CHLORIDE TETRACHLOROETHYLENE Perchloroethylene or Tetrachtoroethene) TOLUENE TRICHLOROETHYLENE Trichloroethane) VINYL CHLORIDE 5 5 5 5 5 3 5 Notes: (1) Flow average for day pertains to WET/PP composite sample day. (2) Flow average for month is for month in which WET/PP sample was taken. (3) Analytical chemistry parameters must be done as part ofthe WETtest chemistry. (3a) Cyanide, Available (Cyanide Amenable to Chlorination) is not an analytical chemistry parameter, but may be required by certain discharge permits

. (4) Priority Pollutants should be reported in micrograms per liter (ug/L). 

### '.s·**'r:!fgtBU''7sot£eniFir'o"'ea~R·,r;a.w··FamsW'"Eii~er'n"7L•'01i**

### 'e'&lnt'raatHaBoraf& ·nsd'tie'sufeiloioonlle'"l6"ini07d'ramsc''1'iiiie!H'ln'i1:rsr:s'rea1isheet.**.~** 

### ..J

................t/,1
..................,P
..

### J'!.

......

## u ........99....••..**J2~L** .•**~Jns.a:.t2Y** 

## ... ....**~..........** 

## ..............,ry., ................................

# n:...**~~** 

# •.9••.•••.:PsL••..••....•

### Iil••

## .J.L
...... (6) Effiuent Limits are calculated based on dilution factor, background allocation (1 0%) and water quality reserves (15%- to allow for new or changed discharges or non-point sources). !J) Possible Exceedence determinations are done for a single sample only on a mass basis using the actual pounds discharged. This analysis does not considerwatershed wide allocations for fresh water discharges. (8) These tests are optional forthe receiving water. However, where possible samples ofthe receiving water should be preserved and saved for the duration ofthe WETtest. In the event of questions about the receiving water's possible effect on the WET results, chemistry tests should then be conducted. (9) pH and Total Residual Chlorine must be conducted at the time of sample collection. Tests for Total Residual Chlorine need be conducted only when an effiuent has been chlorinated or residual chlorine is believed to be present for any other reason.

Revised April24, 2014 Page4 DEPLVV 0740-G2014Printed 5/5/2014 Maine Department of Environmental Protection WET and Chemical Specific Data Report Form This form is for reporting laboratory data and facility information. Official compliance reviews will be done by DEP. Comments:

Revised April 24, 2014 Page 5 DEPLW0740-G2014**-----~----.-..,---.-. -------·~-**  -- --·MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEMPERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS

CONTENTS SECTION TOPIC PAGE A GENERAL PROVISIONS I General compliance 2 2 Other materials 2 3 Duty to Comply 2 4 Duty to provide information 2 5 Permit actions 2 6 Reopener clause 2 7 Oil and hazardous substances 2 8 Property rights 3 9 Confidentiality 3 10 Duty to reapply 3 II Other laws 3 12 Inspection and entry 3 B OPERATION AND MAINTENANCE OF FACILITIES I General facility requirements 3 2 Proper operation and maintenance 4 3 Need to halt reduce not a defense 4 4 Duty to mitigate 4 5 Bypasses 4 6 Upsets 5 

## c MONITORINGAND RECORDS I General requirements 6 2 Representative sampling 6 3 Monitoring and records 6 D REPORTING REQUIREMENTS I Reporting requirements 7 2 Signatory requirement 8 3 Availability ofreports 8 4 Existing manufacturing, commercial, mining, and silvicultural dischargers 8 5 Publicly owned treatment works 9 E OTHERPROVISIONS I Emergency action

- power failure 9 2 Spill prevention 10 3 Removed substances 10 4 Connection to municipal sewer 10 F DEFINTIONS 10

Revised July I, 2002 Page I I 

### I IMAINE POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS A. GENERAL PROVISIONS I. General compliance. All discharges shall be consistent with the terms and conditions ofthis permit; any changes in production capacity orprocess modifications which result in changes in the quantity orthe characteristics ofthe discharge must be authorized by an additional license or by modifications ofthis permit; it shall be a violation ofthe terms and conditions ofthis permit to discharge any pollutant not identified and authorized herein orto discharge in excess ofthe rates or quantities authorized herein orto violate any other conditions ofthis permit. 2. Other materials. Other materials ordinarily produced or used inthe operation ofthis facility, which have been specifically identified in the application, may be discharged at the maximum frequency and maximum level identified in the application, provided: (a) They are not (i) Designated as toxic orhazardous under the provisions ofSections 307 and 311, respectively, ofthe Federal Water Pollution Control Act; Title 38, Section 420, Maine Revised Statutes; or other applicable State Law; or (ii) Known to be hazardous or toxic by the licensee. (b) The discharge ofsuch materials will not violate applicable water quality standards. 3. Duty to comply. The permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of State law and the Clean Water Act and is grounds for enforcement action; for pertnit termination, revocation and reissuance, or modification; or denial of a permit renewal application. (a) The permittee shall comply with effluent standards or prohibitions established under section 307(a) of the Clean Water Act, and 38 MRSA, §420 or Chapter 530.5 for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions, even ifthe permit has not yet been modified to incorporate the requirement. (b) Any person who violates any provision of the laws administered by the Department, including without limitation, a violl)tion of the terms of any order, rule license, permit, approval or decision ofthe Board or Commissioner is subject to the penalties set forth in 38 MRSA, §349. 4. Duty to provide information. The permittee shall furnish to the Department, within a reasonable time, any information which the Department may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit. The permittee shall also furnish to the Department upon request, copies ofrecords required to be kept by this pe1mit. 5. Permit actions. This permit may be modified, revoked and reissued, or terminated for cause. The filing ofa request by the permittee for a permit modification, revocation and reissuance, ortermination, or a notification ofplanned changes or anticipated noncompliance does not stay any permit condition. 6. Reopener clause. The Depmiment reserves the right to make appropriate revisions to this permit in orderto establish any appropriate effluent limitations, schedule ofcompliance or other provisions which may be authorized under 38 MRSA, §414-A(5).**~** 

### I I

Revised July I, 2002 Page 2MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS 7. Oil and hazardous substances. Nothing in this permit shall be construed to preclude the institution ofany legal action orrelieve the permittee from any responsibilities, liabilities or penalties to which the permittee is or may be subject under section 311 ofthe Federal CleanWater Act; section 106 ofthe Federal Comprehensive Enviromnental Response, Compensation and Liability Act of 1980; or 38 MRSA §§ 1301, et. seq. 8. Property rights. This permit does not convey any property rights of any sott, or any exclusive privilege. 9. Confidentiality of records. 38 MRSA §414(6) reads as follows. "Any records, reports or information obtained under this subchapter is available to the public, except that upon a showing satisfactory to the department by any person that any records, repotts or information, or particular part or any record, report or information, other than the names and addresses of applicants, license applications, licenses, and effluent data, to which the department has access under this subchapter would, ifmade public, divulge methods or processes that are entitled to protection as trade secrets, these records, reports or information must be confidential and not available for public inspection or examination. Any records, reports or information may be disclosed to employees or authorized representatives of the State or the United States concerned with carrying out this subchapter or any applicable federal law, and to any party to a hearing held under this section on terms the commissioner may prescribe in order to protect these confidential records, reports and information, as long as this disclosure is material and relevant to any issue under consideration by the department." 10. Duty to reapply. Ifthe permittee wishes to continue an activity regulated by this permit after the expiration date ofthis permit, the permittee must apply for and obtain a new permit. 11. Other laws. The issuance ofthis permit does not authorize any injmy to persons or property or invasion ofother property rights, nor does it relieve the permittee ifits obligation to comply with other applicable Federal, State or local laws and regulations. 12. Inspection and entry. The permittee shall allow the Department, or an authorized representative (including an authorized contractor acting as a representative of the EPA Administrator), upon presentation ofcredentials and other documents as may be required by law, to: (a) Enter upon the permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions ofthis permit; (b) Have access to and copy, at reasonable times, any records that must be kept under the conditions ofthis permit; (c) Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this permit; and (d) Sample or monitor at reasonable times, for the purposes ofassuring permit compliance or as otherwise authorized by the CleanWater Act, any substances or parameters at any location.

B. OPERATION AND MAINTENACE OFFACILITIES 1. General facility requirements. (a) The permittee shall collect all waste flows designated by the Department as requiring treatment and discharge them into an approved waste treatment facility in such a ma1111er as to

Revised July 1, 2002 Page 3MAINEPOLLUTANTDISCHARGE ELIMINATION SYSTEMPERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS maximize removal ofpollutants unless authorization to the contrary is obtained from the Department. (b) The permittee shall at all times maintain in good working order and operate at maximum efficiency all waste water collection, treatment and/or control facilities. (c) All necessary waste treatment facilities will be installed and operational priortothe discharge ofany wastewaters. (d) Final plans and specifications must be submitted to the Department for review prior to the construction or modification ofany treatment facilities. (e) The permittee shall install flow measuring facilities ofa design approved by the Department. (f) The permittee must provide an outfall ofa design approved by the Departmentwhich is placed in the receiving waters in such a manner that the maximum mixing and dispersion of the wastewaters will be achieved as rapidly as possible. 2. Proper operation and maintenance. The permittee shall at all times properly operate and maintain all facilities and systems oftreatment and control (and related appurtenances) which are installed or used by the permittee to achieve compliance with the conditions ofthis permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems which are installed by a permittee only when the operation is necessary to achieve compliance with the conditions ofthe permit. 3. Need to halt or reduce activity not a defense. It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions ofthis permit. 4. Duty to mitigate. The permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in violation of this permit which has a reasonable likelihood of adversely affecting human health orthe environment. 5. Bypasses. (a) Definitions. (i) Bypass means the intentional diversion ofwaste streams from any portion ofa treatment facility. (ii)Severe property damage means substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production. (b) Bypass not exceeding limitations. The permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only ifit also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions ofparagraphs (c) and (d) ofthis section. (c) Notice. (i) Anticipated bypass. If the permittee knows in advance ofthe need for a bypass, it shall submitprior notice, ifpossible at least ten days before the date ofthe bypass.

Revised July I, 2002 Page4MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS (ii) Unanticipated bypass. The pennittee shall submit notice of an unanticipated bypass as required in paragraph D(l)(f), below. (24-hour notice). (d) Prohibition ofbypass. (i) Bypass is prohibited, and the Department may take enforcement action against a permittee for bypass, unless: (A) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage; (B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and (C) The permittee submitted notices as required under paragraph (c) ofthis section. (ii) The Department may approve an anticipated bypass, after considering its adverse effects, if the Department determines that it will meet the three conditions listed above in paragraph (d)(i) ofthis section. 6. Upsets. (a) Definition. Upset means an exceptional incident in which there is unintentional and temporary noncompliance with technology based permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. (b) Effect of an upset. An upset constitutes an affirmative defense to an action brought for noncompliance with such teclmology based permit effluent limitations ifthe requirements of paragraph (c) ofthis section are met. No determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is final administrative action subject tojudicial review. e­ (c) Conditions necessary for a demonstration ofupset. A permittee who wishes to establish the

1 I affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that: (i) An upset occurred and that the permittee can identifY the cause(s) ofthe upset; (ii) The permitted facility was at the time being properly operated; and (iii)The permittee submitted notice ofthe upset as required in paragraph D(l)(f), below. (24 hour notice). (iv) The permittee complied with any remedial measures required under paragraphB(4). (d) Burden of proof. In any enforcement proceeding the permittee seeking to establish the occurrence ofan upset has the burden ofproof.

Revised July I , 2002 Page 5MAINE POLLUTANTDISCHARGE ELIMINATION SYSTEMPERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS

C. MONITORING AND RECORDS 1. General Requirements. This permit shall be subject to suchmonitoring requirements as may be reasonably required by the Department including the installation, use and maintenance ofmonitoring equipmentor methods (including, where appropriate, biological monitoring methods). The permittee shall providethe Departmentwith periodic reports on the properDepartment reporting form of monitoringresults obtained pursuanttothe monitoringrequirements contained herein. 2. Representative sampling. Samples and measurements taken as required herein shall berepresentative ofthe volume and nature ofthe monitored discharge. Ifeffluent limitations are based wholly or partially on quantities ofa product processed, the permittee shall ensure samples are representative oftimes when productionis taking place. Where discharge monitoring is required when production is less than 50%, the resulting data shall be reported as a daily measurementbutnot included in computation ofaverages, unless specifically authorized by the Department. 3. Monitoring and records. (a) Samples and measurements taken for the purpose ofmonitoring shall be representative ofthe monitored activity. (b) Except for records ofmonitoring informationrequired by this permitrelated to the permittee's sewage sludge use and disposal activities, which shall be retained for a period ofat least five years, the permittee shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this permit, and records of all data used to complete the application for this permit, for a period ofat least 3 years from the date of the sample, measurement, report or application. This period may be extended by request ofthe Department at any time. (c) Records ofmonitoring information shall include: (i) The date, exactplace, and time ofsampling or measurements; (ii) The individual(s) who performed the sampling or measurements; (iii)The date(s) analyses were performed; (iv) The individual(s) who performed the analyses; (v) The analytical techniques ormethods used; and (vi)The results ofsuch analyses. (d) Monitoring results must be conducted according to test procedures approved under 40 CFR part 136, unless other test procedures have been specified in the permit. (e) State law provides that any person who tampers with or renders inaccurate any monitoring devices or method required by any provision of law, or any order, rule license, permit approval or decision is subject to the penalties set f01th in 38 MRSA, §349.

Revised July l, 2002 Page 6MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS D. REPORTING REQUIREMENTS 1. Reporting requirements. (a) Planned changes. The petmittee shall give notice to the Department as soon as possible of any planned physical alterations or additions to the permitted facility. Notice is required only when: (i) The alteration or addition to a permitted facility may meet one of the criteria for determining whether a facility is a new source in 40 CFR 122.29(b); or (ii)The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants which are subject neither to effluent limitations in the permit, nor to notification requirements under Section D(4). (iii)The alteration or addition results in a significant change in the permittee's sludge use or disposal practices, and such alteration, addition, or change mayjustifY the application of permit conditions that are different from or absent in the existing permit, including notification ofadditional use or disposal sites not reported during the permit application process or not reported pursuant to an approved land application plan; (b) Anticipated noncompliance. The permittee shall give advance notice to the Department of any planned changes in the permitted facility or activity which may result in noncompliance with permit requirements. (c) Transfers. This permit is not transferable to any person except upon application to and approval ofthe Department pursuantto 38 MRSA, § 344 and Chapters 2 and 522. (d) Monitoring reports. Monitoring results shall be reported at the intervals specified elsewhere in this permit. (i) Monitoring results must be reported on a Discharge Monitoring Report (DMR) or forms provided or specified by the Department for reporting results ofmonitoring ofsludge use or disposal practices. (ii) Ifthe permittee monitors any pollutant more frequently than required by the permit using test procedures approved under 40 CFR part 136 or as specified in the permit, the results ofthis monitoring shall be included in the calculation and reporting ofthe data submitted in the DMR or sludge reporting form specified by the Department. (iii) Calculations for all limitations which require averaging ofmeasurements shall utilize an arithmetic mean unless otherwise specified by the Department in the permit. (e) Compliance schedules. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this permit shall be submitted no later than 14 days following each schedule date. (f) Twenty-four hourreporting. (i) The permittee shall report any noncompliance which may endanger health or the enviromnent. Any information shall be provided orally within 24 hours from the time the permittee becomes aware of the circumstances. A written submission shall also be provided within 5 days of the time the permittee becomes aware of the circumstances. The written submission shall contain a description ofthe noncompliance and its cause; the period ofnoncompliance, including exact dates and times, and ifthe noncompliance

Revised July I, 2002 Page 7MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEMPERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and preventreoccurrence ofthe noncompliance. (ii)The following shall be included as information which must be reported within 24 hours under this paragraph. (A) Any unanticipated bypass which exceeds any effluent limitation inthe permit. (B) Anyupset which exceeds any effluent limitation in the permit. (C) Violation ofa maximum daily discharge limitation for any ofthe pollutants listed by the Department in the permitto be reported within 24 hours. (iii)The Department may waive the written report on a case-by-case basis for reports under paragraph (f)(ii) ofthis section ifthe oral report has been received within 24 hours. (g) Other noncompliance. The permittee shall report all instances ofnoncompliance not reported under paragraphs (d), (e), and (f) ofthis section, at the time.monitoring reports are submitted. The reports shall contain the information listed in paragraph (f) ofthis section. (h) Other information. Where the permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect infmmation in a permit application or in any report to the Department, it shall promptly submit such facts or information. 2. Signatory requirement. All applications, repmis, or information submitted to the Department shall be signed and certified as required by Chapter 521, Section 5 of the Department's rules. State law provides that any person who knowingly makes any false statement, representation or certification in any application, record, report, plan or other document filed or required to be maintained by any order, rule, permit, approval or decision of the Board or Commissioner is subject to the penalties set forth in 38 MRSA, §349. 3. Availability ofreports. Except for data determined to be confidential under A(9), above, all reports prepared in accordance with the terms ofthis petmit shall be available for public inspection at the offices ofthe Depmiment. As required by State law, effluent data shall not be considered confidential. Knowingly making any false statement on any suchreport may result in the imposition ofcriminal sanctions as provided by law. 4. Existing manufacturing, commercial, mining, and silvicultural dischargers. In addition to the reporting requirements under this Section, all existing manufacturing, commercial, mining, and silvicultural dischargers must notify the Depmiment as soon as they know orhave reason to believe: (a) That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, ofany toxic pollutant which is not limited in the permit, if that discharge will exceed the highest ofthe following "notification levels": (i) One hundred micrograms perliter (100 ugfl); (ii)Two hundred micrograms per liter (200 ugll) for acrolein and acrylonitrile; five hundred micrograms per liter (500 ug/1) for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol; and one milligram perliter (1 mgll) for antimony; (iii)Five (5) times the maximum concentration value reported for that pollutant in the permit application in accordance with Chapter 521 Section 4(g)(7); or (iv)The level established by the Department in accordance with Chapter 523 Section 5(f).

Revised July 1, 2002 Page 8MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS (b) That any activity has occurred or will occur which would result in any discharge, on a nonroutine or infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the highest ofthe following "notification levels": (i) Five hundred micrograms per liter (500 ug/1); (ii)One milligram per liter (1 mg/1) for antimony; (iii)Ten (10) times the maximum concentration value reported for that pollutant in the permit application in accordance with Chapter 521 Section 4(g)(7); or (iv)The level established by the Department in accordance with Chapter 523 Section 5(f). 5. Publicly owned treatment worl<s. (a) All POTWs must provide adequate notice to the Depmiment ofthe following: (i) Any new introduction of pollutants into the POTW from an indirect discharger which would be subject to section 301 or 306 of CWA or Chapter 528 if it were directly discharging those pollutants. (ii)Any substantial change inthe volume or character ofpollutants being introduced into that POTW by a source introducing pollutants into the POTW at the time of issuance ofthe permit. (iii) For purposes ofthis paragraph, adequate notice shall include information on {A) the quality and quantity ofeffluent introduced into the POTW, and (B) any anticipated impact ofthe change on the quantity or quality ofeffluent to be discharged from the POTW. (b) When the effluent discharged by a POTWfor a period oftlu·ee consecutive months exceeds 80 percent ofthe permitted flow, the permittee shall submit to the Department a projection of loadings up to the time when the design capacity ofthe treatment facility will be reached, and a program for maintaining satisfactory treatment levels consistent with approved water quality management plans.
E. OTHER REQUIREMENTS 1. Emergency action- power failure. Within thirty days after the effective date ofthis permit, the I permittee shall notifY the Department offacilities and plans to be used in the event the primary source of 

# I power to its wastewater pumping and treatment facilities fails as follows. (a) Formunicipal sources. During power failure, all wastewaters which are normally treated shall receive a minimum ofprimary treatment and disinfection. Unless otherwise approved, alternate power supplies shall be provided for pumping stations and treatment facilities. Alternate power supplies shall be on-site generating units or an outside power source which is separate and independent from sources used for normal operation ofthe wastewater facilities. (b) For industrial and commercial sources. The permittee shall either maintain an altemative power source sufficient to operate the wastewater pumping and treatment facilities or halt, reduce or otherwise control production and or all discharges upon reduction or loss ofpower to the wastewater pumping ortreatment facilities.

Revised July I, 2002 Page 9MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEMPERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS 2. Spill prevention. (applicable only to industrial sources) Within six months ofthe effective date of this petmit, the permittee shall submit to the Department for review and approval, with or without conditions, a spill prevention plan. The plan shall delineate methods and measures to be taken to prevent and or contain any spills ofpulp, chemicals, oils or other contaminates and shall specify means of disposal and ortreatment to be used. 3. Removed substances. Solids, sludges trash rack cleanings, filter backwash, or other pollutants removed from orresulting from the treatment or control ofwaste waters shall be disposed ofin a manner approved by the Department. 4. Connection to municipal sewer. (applicable only to industrial and commercial sources) All wastewaters designated by the Department as treatable in a municipal treatment system will be cosigned to that system when it is available. This permit will expire 90 days after the municipal treatment facility becomes available, unless this time is extended by the Department in writing.

F. DEFINITIONS. For the purposes ofthis permit, the following definitions shall apply. Other definitions applicable to this permit may be found in Chapters 520 through 529 ofthe Department's rules Average means the arithmetic mean ofvalues taken at the frequency required for each parameter overthe specified period. For bacteria, the average shall be the geometric mean. Average monthly discharge limitation means the highest allowable average ofdaily discharges over a calendar month, calculated as the sum ofall daily discharges measured during a calendar month divided by the number ofdaily discharges measured during that month. Except, however, bacteriological tests may be calculated as a geometric mean. Average weekly discharge limitation means the highest allowable average ofdaily discharges over a calendar week, calculated as the sum ofall daily discharges measured during a calendar week divided by the number ofdaily discharges measured during that week. Best management practices ("BMPs") means schedules ofactivities, prohibitions ofpractices, maintenance procedures, and other management practices to prevent or reduce the pollution ofwaters of the State. BMPs also include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. Composite sample means a sample consisting ofa minimum ofeight grab samples collected at equal intervals during a 24 hour period (or a lesser period as specified in the section onmonitoring and reporting) and combined proportional to the flow over that same time period. Continuous discharge means a discharge which occurs without interruption throughout the operating hours ofthe facility, except for infrequent shutdowns for maintenance, process changes, or other similar activities. Daily discharge means the discharge ofa pollutant measured during a calendar day or any 24-hour period that reasonably represents the calendar day for purposes ofsampling. Forpollutants with limitations expressed in units ofmass, the daily discharge is calculated as the total mass ofthe pollutant discharged over the day. Forpollutants with limitations expressed in other units ofmeasurement, the daily discharge is calculated as the average measurement ofthe pollutant over the day.

Revised July 1, 2002 Page 10MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEMPERMIT STANDARD CONDITIONS APPLICABLE TO ALL PERMITS Discharge MonitoringReport ("DMR") means the EPA uniform national form, including any subsequent additions, revisions, or modifications for the reporting ofself-monitoring results by permittees. DMRs must be used by approved States as well as by EPA. EPA will supply DMRs to any approved State upon request. The EPA national forms may be modified to substitute the State Agency name, address, logo, and other similar infmmation, as appropriate, in place ofEPA's. Flowweighted composite sample means a composite sample consisting ofa mixture ofaliquots collected at a constant time interval, where the volume ofeach aliquot is proportional to the flow rate of the discharge. Grab sample meansan individual sample collected in a period ofless than IS minutes. Interference means a Discharge which, alone or in conjunction with a discharge or discharges from other sources, both: (I)Inhibits or disrupts the POTW, its treatment processes or operations, or its sludge processes, use or disposal; and (2) Therefore is a cause of a violation of any requirement of the POTW's NPDES permit (including an increase in the magnitude or duration of a violation) or of the prevention of sewage sludge use or disposal in compliance with the following statutmy provisions and regulations or permits issued thereunder (or more stringent State or local regulations): Section 405 ofthe Clean Water Act, the Solid Waste Disposal Act (SWDA) (including title II, more commonly referred to as the Resource Conservation and Recovery Act (RCRA), and including State regulations contained in any State sludge management plan prepared pursuant to subtitle D ofthe SWDA), the Clean Air Act, the Toxic Substances Control Act, and the Marine Protection, Research and Sanctuaries Act. Maximum daily discharge limitation means the highest allowable daily discharge. New source means any building, structure, facility, orinstallation from which there is or may be a discharge ofpollutants, the construction ofwhich commenced: (a) After promulgation ofstandards ofperformance under section 306 ofCWA which are applicable to such source, or (b) After proposal ofstandards ofperformance in accordance with section 306 ofCW A which are applicable to such source, but only ifthe standards are promulgated in accordance with section 306 within 120 days oftheirproposal. Pass through means a discharge which exits the POTW into waters of the State in quantities or concentrations which, alone or in conjunctionWith a discharge or discharges from other sources, is a cause of a violation of any requirement of the POTW's NPDES permit (including an increase in the magnitude or duration ofa violation). Permit means an authorization, license, or equivalent control document issued by EPAor 1!_1) approved State to implement the requirements of40 CFRparts 122, 123 and 124. Petmit includes anNPDES general permit (Chapter 529). Permit does not include any permit which has not yet been the subject of final agency action, such as a draft permit or a proposed permit. Person means an individual, firm, corporation, municipality, quasi-municipal corporation, state agency, federal agency or other legal entity.
Revised July I, 2002 Page IIMAINEPOLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT STANDARD CONDITIONS APPLICABtE TO ALL PERMITS

Point source means any discerpible, confined and discrete conveyance, including, but not limited to, any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation or vessel or other floating craft, from which pollutants are or may be discharged. Pollutant means dredged spoil, solid waste,junk, incineratorresidue, sewage, refuse, effluent, garbage, sewage sludge, munitions, chemicals, biological or radiological materials, oil, petroleum products or byproducts, heat, wrecked or discarded equipment, rock, sand, dirt and industrial, municipal, domestic, commercial or agricultural wastes ofany kind. Process wastewater means any water which, during manufacturing orprocessing, comes into direct contact with orresults from the production or use ofany raw material, intermediate product, finished product, byproduct, or waste product. Publicly owned treatment worl<s ("POTW") means any facility for the treatment ofpollutants owned by the State or any political subdivision thereof, any municipality, district, quasi-municipal corporation or other public entity. Septagcmeans, for the purposes ofthis permit, any waste, refuse, effluent sludge or other material removed from a septic tank, cesspool, vault privy or similar source which concentrates wastes orto which chemicals have been added. Septage does not include wastes from a holding tank. Timeweighted composite means a composite sample consisting ofa mixture ofequal volume aliquots collected over a constant time interval. Toxic pollutant includes any pollutant listed as toxic under section 307(a)(l) or, in the case ofsludge use or disposal practices, any pollutant identified in regulations implementing section 405(d) ofthe CWA. Toxic pollutant also includes those substances orcombination ofsubstances, including disease causing agents, which after discharge or upon exposure, ingestion, inhalation or assimilation into any organism, including humans either directly through the environment or indirectly through ingestion through food chains, will, on the basis ofinformation available to the board either alone or in combination with other substances already in the receiving waters or the discharge, cause death, disease, abnormalities, cancer, genetic mutations, physiological malfunctions, including malfunctions in reproduction, or physical deformations in such organism or their offspring. Wetlands means those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances do**suppor~** a prevalence ofvegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. Whole effluent toxicity means the aggregate toxic effect ofan effluent measured directly by a toxicity test.

Revised July 1 , 2002 Page 12

### MAINE POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMIT AND MAINE WASTE DISCHARGE LICENSE FACT SHEET Date: 

### March 30, 2015 PERMIT NUMBER: 

### ME0100501 LICENSE NUMBER: 

### W002633-6C-G-R NAME AND ADDRESS OF APPLICANT: 

### TOWN OF DOVER-FOXCROFT 48 Morton Ave., Suite A Dover-Foxcroft, Maine 04426 COUNTY: 

### Piscataquis County NAME AND ADDRESS WHERE DISCHARGE OCCURS: 

### 478 Vaughn Road Dover-Foxcroft, Maine 04426 RECEIVING WATER/CLASSIFICATION: 

### Piscataquis River/Class B COGNIZANT OFFICIAL AND TELEPHONE NUMBER: 

### William Littlefield, Plant Mgr. (207) 564-3905

. wastewtr@dover-foxcroft.org 1. APPLICATION SUMMARY

a. Application · The Town ofDoverFoxcroft (Town/permittee hereinafter) has submitted a timely and complete application to the Depmiment for the renewal ofcombination Maine Pollutant Discharge Elimination System (MEPDES) permit#ME0100501/Maine Waste Discharge License (WDL) #W002633-6C-E-R (pe1mit hereinafter) that was issued by the Department on September 29, 2009, for a five-year term. The 9/29/09 permit authorized the discharge ofup to a monthly average flow of0.80 million gallons per day (MGD) ofsecondary treated sanitmy waste waters to the Piscataquis River, Class B, inDover-Foxcroft, Maine. See 

### Attachment A ofthis Fact Sheet for a location map.

### ME0100501 FACT SHEET Page 2 of23 W002633-6C-G-R 

### 1. APPLICATION SUMMARY 

### b. Source Description: The waste water treatment facility receives sanitary waste water flows from approximately 3,100 residential and commercial users in the Town of Dover-Foxcroft. The collection system is approximately 20 miles in length and is mostly separated with no combined sewer overflows (CSO). The collection system has three pump stations and all three have on-site back-up power in the event ofa power failure. The existing sewer system has some inflow and infiltration (I&I) that periodically · hydraulically overloads the facility. The Town has been implementing a program to completely separate the sanitary waste water collection from storm water collection system and eliminate as much ofthe I&I such that all the sanitary waste water makes its wayto the waste water treatment facility.

c. Waste Water Treatment: The Town's waste water treatment facility provides a secondary level oftreatment via an aerated lagoon system. The lagoon system is comprised ofthree lagoons operated in series with a total surface area ofapproximately 9.1 acres, a total capacity of22.9 million gallons with a detention time of59 days. Aeration inthe three treatment lagoons is provided by diffused aearation and mechanical aerators. Preliminary treatment at the facility is provided by a step screen and a grit chamber. The effluent is seasonally disinfected with sodium hypochlorite and dechlorinated with sodium bisulfite priorto discharge to the Piscataquis River. The effluent is discharged to the receiving water via an 18 inch diameter ductile iron pipe that extends out into the receiving water approximately 50 feet, or 

### Y. ofthe width ofthe river. See Attachment B 

### ofthis Fact Sheet for a schematic ofthe waste water treatment process. 2. PERMIT SUMMARY



### a. Terms and Conditions: This permitting action is carrying forward all the terms and ·conditions ofthe 9/29/14 except this permit is;

1. Eliminating the monthly average water quality based mass and concentration limits for total lead as a statistical evaluation onthe most cun·ent 60 months oftest results submitted to the Departnment indicates the discharge no longer exceeds or has a reasonable potential to exceed the chronic ambient water quality criteria (AWQC) for total lead. 2. Eliminating Special Condition C, 

### Disinfection, from the permit as the Depatiment has reconsidered the value ofsaid condition. 3. Incorporating previously established average andmaximum technology based concentration limits for total mercmy so the results can be tracked inthe federal Integrated Compliance Information System (I

### CIS).ME0100501 FACT SHEET Page 3 of23 W002633-6C-G-R 2. 

### PE.RMIT SUMMARY (cont'd) 4. Eliminating the option for the facility to report the NODI 9 code onthe Discharge Monitoring Report (DMR) whencalculating percentremoval when the average influent concentration is less than 200 mg/L based on guidance from the U.S. Environmental Protection Agency (EPA). 5. Increasing the water quality based monthly average and or daily mass limitations for ammonia and total copper based on an undated statistical evaluation and reallocation ofloadings oftoxic pollutants inthe Piscataquis River watershed. 6. Reducing the monitoring frequency for biochemical oxygen demand (BOD) and total suspended solids (TSS) from 2/Weekto 1/Week, 

### E. coli bacteria from 2/Week to 1/Week, total residual chlorine from 1/Day to 4/Week and pH from 5/Week to 1/Week based ona statistical evaluation ofthe test results for each parameters for the period Janumy 2011- June 2014. 7. Establishing a monthly average water quality based mass limitation for total phosphorus as the discharge has a reasonable potential to exceed a national in-stream total phosphorus concentration goal ofless than 100 ug/L in streams or other flowing waters not discharging directlyto lakes orimpoundments to prevent nuisance algal growth. b. History: The most cu11'ent relevant regulatory actions include the following: 

### July, 1991

- The Town completed construction and commenced operations ofthe new waste water treatment facility. 

### Februmy 9, 1993- The Department issued WDL #W002633-46-B-Rto the Town of Dover-Foxcroft for the discharge of0.80 MGD ofsecondary treated sanitary waste water to the Piscataquis River. As a result ofthe construction ofthe waste water treatment facility, combined sewer overflows (CSO's) were reduced from sixteen to four in number. Three ofthe four CSO discharge points were overflow structures associated with protecting pump stations during excessive stmmwater flows. All four discharge points were technically considered to be CSO's in accordance with Depmiment regulation Chapter 570, 

### Stormwater and CombinedSewer OveJflows. Chapter 570 authorized the discharge from these CSO'sprovided the facility met specified criteria. 

### February 8, 1995- The Department administrativelymodified WDL #W002633-46-B-R by issuing a letter to the TownnotifYing them it was subject to Departmentrule, 06-096 CMR, Chapter 530.5, 

### Swface. Water Taxies Control Program, adopted by the Board of Environmental Protection on October 12, 1994. 

### November 29, 1999- The Department issued WDL #W002633-5L-C-R for a five-year term.ME0100501 FACT SHEET Page 4 of23 W002633-6C-G-R 

### 2. PERMIT SUMMARY (cont'd) May 25, 2000- The Departmentunilaterally modified the 11/29/99 WDL by establishing interim average and maximum concentration limits for mercury. 

### January 12, 2001- The State ofMaine received authorization from the EPAto administer the NPDES petmitting program in Maine. Theprogram has since been referred to as the Maine Pollutant Discharge Elimination System (MEPDES) program. 

### September 13, 2002- The Department administratively modified the 11/29/99 WDL by establishing new dilution factors (increased) associated withthe discharge. As a result, water quality based limitations for copper and zinc were eliminated. 

### September 7, 

### 2004- The Department issued combinationMEPDES petmit #ME0100501/WDL#W002633-5L-D-R for a five-year term. 

### Apri/10, 2006- The Depmiment modified the 9/7/04 MEPDES petmit!WDL by establishing whole effluent toxicity and chemical specific testing pursuant to Department rule 06-096 CMR, Chapter 530, 

### Swface Water Taxies Control Program, promulgated on October 12, 2005. 

### July 24, 2009- The Town submitted a timely and complete application to the Department to renewthe 9/7/04 MEPDES permit!WDL. 

### December 29, 2009- The Depmiment issued combinationMEPDES permit #ME0100501/WDL #W002633-6C-E-R for a five-year term. 

### August20, 2014- The Town submitted a timely and complete application to the Department to renew the 12/29/09 MEPDES petmit/WDL. 

### 3. CONDITIONS OF PERMITS Maine law, 38 M.R.S.A. Section 414-A, requires that the effluent limitations prescribed for discharges, including, but not limited to, effluent toxicity, require application ofbest practicable treatment (BPT), be consistent with the U.S. Clean Water Act, and ensure that the receiving waters attain the State water quality standards as described in Maine's Surface Water Classification System. In addition, 38 M.R.S.A., Section420 and Departmentrule 06­ 096 CMRChapter 530, 

### Swface Water Taxies Control Program, require the regulation of toxic substa11ces not to exceed levels set forth in Depatiment rule 06-096 CMR Chapter 584, 

### Swface Water Quality Criteriafor Toxic Pollutants, and that ensure safe levels for the discharge oftoxic pollutants suchthat existing and designated uses ofsurface waters are maintained and protected.MEOI00501 FACT SHEET Page 5 of23 W002633-6C-G-R 

### 4. RECEIVINGWATERSTANDARDS Maine law, 38 M.R.S.A., Section 467(7)(E)(I)(c) classifies the Piscataquis River as a Class B waterway. Maine law, 38 M.R.S.A., Section 465(3 & 4) describes the classification standards for Class B waters as follows: Class B waters must be of such quality that they are suitable for the designated uses of drinking water supply after treatment;fishing; agriculture; recreation in andon the water; industrialprocess andcoolingwater supply; hydroelectricpowergeneration, except asprohibited under Title 12, section 403; navigation; andas habitat forfish and other aquatic life. The habitat must be characterizedas unimpaired The dissolved oxygen content of Class B waters maynot be less than 7partsper million or 75% of saturation, whichever is higher, exceptthatfor theperiodfi·om October 1stto May 14th, in order to ensure spawning andegg incubation of indigenous fish species, the 7-day mean dissolvedoxygen concentration maynotbe less than 9.5partsper million andthe 1-dayminimum dissolved oxygen concentration maynot be less than 8. 0 partspermillion in identified fish spawningareas. BetweenMay 15th andSeptember 30th, the number of Escherichia coli bacteria of human anddomestic animal origin in these waters may not exceeda geometric mean of 64per I00 milliliters or an instantaneous level of236per 100milliliters. In determining human anddomestic animal origin, the department shall assess licensedand unlicensedsources using available diagnosticprocedures. Discharges to Class B waters maynotcause adverse impact to aquatic life in that the receivingwaters mustbe of sufficient quality to support all aquatic species indigenous to the receivingwater without detrimental changes in the resident biological community. 

### 5. RECEIVING WATER CONDITIONS The Department conducted ambient water quality surveys in 1997, 1998 and 200I on the Piscataquis River in an effort to assess the existing water quality and develop a water quality model 

# II to support the issuance ofa total maximum daily load (TMDL) report. Ambient water quality sampling was conducted on 23 miles ofthe Piscataquis River from Guilford to Milo. The Department published a docmnent entitled, Piscataquis River DataReport, 2001 Survey, January 2002, DEPLW0465, with the results ofthe sampling events. The 2012 Integrated Water Quality Monitoring and Assessment Report, published by the Department (often referred to as the 305b Report) lists a 13.44 mile segment ofthe Piscataquis River belowthe Dover-Foxcroft waste water treatment facility (MEOI02000402

_219ROI) in a table entitled, Table 5-A: RiversAndStreams ImpairedByPollutants Other Than Those Listedin 5-B Through 5-D (!'MDL Required). The report cites the cause ofthe impairment is lowdissolved oygen levels. Previous 305b reports listed low dissolved oxygen levels and bacteria as a result of municipal point sources, agricultural noncpoint sources and combined sewer overflows as beingthe cause ofthe impainnent.

### ME0100501 FACT SHEET Page 6 of23 W002633-6C-G-R 

### 5. RECEIVING WATER CONDITIONS (cont'd) The Department is scheduled to perf01m a comprehensive ambient water quality survey during the summer of2015 and prepare a TMDL for the 13.44-mile segment during calendar year 2016. Ifthe TMDL indicates that at full permitted discharge limits, the discharge from the Dover-Foxcroft facility is causing or contributing to the non-attainment ofambient water quality standards, this permit will be re-opened per Special ConditionL, Reopening Of The PermitFor Modifications, 

### to impose more stringent limitations to meet water quality standards. All freshwaters in the State ofMaine are listed as Category 4-A: Waters ImpairedBy AtmosphericDeposition of Mercury, 

### in a document entitled, 2012 integrated Water Quality Monitoring andAssessmentReport, 

### published by the Department. Impairment in this contextrefers to the designated use ofrecreational fishing due to elevated levels ofmercury in some fish caused by atmospheric deposition. As a result, the State has established a fish consumption advisory for all freshwaters inMaine. The Report states that a regional scale TMDL has been approved. In

### addition, pursuant to Maine law, 38 M.R.S.A. §420(1-B)(B), "a facility is not in violation of the ambient criteria for mercury 

## if thefacility is in compliance with an interim discharge limit established bythe Departmentpursuant to section 413 subsection 11. " 

### The Department has established interim monthly average and daily maximum mercmy concentration limits for this facility. See the discussion on compliance in section 6(k) ofthis Fact Sheet. 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

a. Flow: The previouspermit established a monthly average flow limitation of0.80 MGD that is being can-ied forward in this permitting action and is considered to be representative ofthe monthly average design flow for the waste water treatment facility. 

## i

## ~ A review ofthe monthly DMR data for the period January 2011- June 2014 indicates 

### I the permittee has reported flows as follows: 

### Flow (42 DMRs)

Value Limit (MGD) Range(MGD) Mean(MGD) Monthly Average 0.80 0.094-0.33 0.29. Daily Maximum Report 0.14-1.21 0.51ME0100501 FACT SHEET Page 7 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) b. DilutionFactors

- The Department established applicable dilution factors for the discharge in accordance with freshwater protocols established in Depmiment Rule Chapter 530 Surface Water Taxies ControlProgram, October 2005. With a petmitted flow limit of0.80 MGD, the dilution factors are as follows: Acute: lQlO(l) = 12.1 cfs 

### => (12.1 cfs)(0.6464) 

### + (0.80 MGD) = 10.7:1 (0.80MGD) Chronic: 7Q10 =22.1 cfs 

### => (22.1 cfs)(0.6464) 

### + (0.80 MGD) = 18.8:1 (0.80MGD) Hatmonic Mean(2) = 135.1 cfs 

### => (135 cfs)(0.6464) 

### + (0.80 MGD) = 110:1 (0.80 MGD) Footnotes (1) Chapter 530.5 (D)(4)(a) states that analyses using numeric acute criteria for aquatic life must be based on 1/4 ofthe 1 Q10 stream design flow to prevent substantial acute toxicity within any mixing zone. The 1 Q 1 0 is the lowest one-day flow over a tenyear recunence interval. The regulation goes on to say that where it Cat!be demonstrated that a discharge achieves rapid and complete mixing withthe receiving water by way ofan efficient diffuser or other effective method, analyses may use a greater proportion ofthe stream design, up to including all ofit. The Depmiment evaluated the mixing characteristics oftheriver via a receiving water flow study in September of2002. Due to the location ofan island in the river, the Department determined that approximately 81.7% ofthe 1Q10 (14.8 cfs) was available for dilution. Therefore, the Department established 12.1 cfs as thereceiving water 1 Q10 flow value to be used incalculating the acute dilution factor. (2) In the 2004 permitting action, the harmonic mean dilution factor (54.6: 1) was approximated bymultiplying the 7Ql0receiving water flow by three (3) or 83.1 cfs. This multiplying factor was based on guidelines for estimation ofhumanhealth dilution presented in the USEPA publication "Technical SupportDocument for Water Quality-based Taxies Control" (Office ofWater; EPA/505/2-90-001, page 88), and represents an estimation ofharmonic mean flow on which humanhealth dilutions are based in a riverine 7Ql0 flow situation. The Departmentre-evaluated the harmonic mean receiving water flow inthe summer of2009 based onthe actual flows recorded over time at the Howland gauge. As a result, a new harmonic meanflow of 135.1 cfs was established for the permittee's facility.MEOlOOSOl FACT SHEET Page 8 of23 W002633-6C-G-R 6. EFFLUENT LIMITATIONS & MONITORING REQUIREMENTS (cont'd)

c. Biochemical Oxygen Demand (BODS) and Total Suspended Solids (TSS):

- The previous permit established monthly and weekly average BODS and TSS best practicable treatment (BPT) concentration limits of30 mg/L and 4S mg/L respectively, that were based on secondary treatment requirements of06-096 CMR Chapter 52S(3)(III). The maximum dailyBODS and TSS concentration limits of50 mg/L was based ona Depmiment best professionaljudgment ofBPT. All three concentration limits are being carried forward inthis permitting action. As for mass limitations, the previous permitting action established monthly average, weekly average and dailymaximum limitations based on a monthly average limit of 0.80 MOD that are being carried forward in this permitting action. The limitations were calculated as follows: Monthly average: (0.80 MGD)(8.34)(30 mg/L) = 200 lbs/day Weekly average: (0.80 MGD)(8.34)(45 mg/L) = 300 lbs/day Daily maximum: (0.80 MGD)(8.34)(50 mg/L) = 334lbs/day A review ofthe monthly DMRdata for the period January 2011 -June 2014 indicates the permittee has repotied BOD and TSS results as follows: BOD Mass (42 DMRs

Value Average (lbs/day) Monthly Average Limit (lbs/day) Ranl(e (lbs/day) 8-97 43 Daily Maximum 200 13- 193 72 334 . ! BOD Concentration (42 DMRs)

Value Limit (mg/L) Range (mg/L) Averal(e (mi((L) Monthly Average 30 4-28 16 Daily Maximum 50 6-49 24 TSS mass (42 DMRs)

Value Limit (lbs/day) Ran2e (lbs/day) 10-113 Average (lbs/day) 43 Monthly Average 200 DailyMaximum 334 13-158 70 TSS Concentration (42 DMRs)

Value Limit (mi!:IL) Range (mg/L) Averal(e (mi((L) Monthly Average 35 6-30 16 DailyMaximum 60 6-48· 22

### MEOI00501 FACT SHEET Page 9 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS & 

### MONITORING REQUIREMENTS (cont'd) Minimum monitoring frequency requirements in MEPDES permits are prescribed by 06-096 CMR Chapter 523§5(i). The USEPAhas published guidance entitled, Interim Guidance for Pe1jormance BasedReductions ofNPDESPermitMonitoringFrequencies (USEPA Guidance April 1996). In addition; the Department has supplemented the EPA guidance with its own guidance entitled, Performance BasedReduction of Monitoring Frequencies- Modification of EPA Guidance ReleasedApri/1996 (Maine DEP May 22, 2014). Both documents are being utilized to evaluate the compliance history for each parameter regulated by the previous permit to determine ifa reduction in the monitoring frequencies arejustified. Although EPA's 1996 Guidance recommends evaluation ofthe most current two-years ofeffluent data for a parameter, the Department is considering 42 months ofdata (January 2011- June 2014). A review ofthe monitoring data for BOD & TSS indicates the ratios (expressed in percent) ofthe long term effluent average to the monthly average limits can be calculated as 22%. According to Table I ofthe EPA Guidance, a 2/Week monitoring requirement can be reduced to 1/Week

.. Therefore, this petmitting action is reducing the monitoring frequency for TSS to 1/Week The previous petmitting action established a requirement of85% removal for BOD and TSS pursuant to Departmentrule Chapter 525(3)(III)(a&b)(3) except in the circumstances where the influent concentration is less than 200 mg/L. Compliance was based on a 12-month rolling average period to be consistent with all other Department permitting actions for lagoon systems with extended detentiontimes. The percent removal requirement is being carried forward in this permitting action. d. Escherichia coliform (E. 

### coli.) bacteria: The previous permitting action established seasonal (between May 15 and September 30 ofeach year) monthly average and daily maximum concentration limits for E. coli bacteria of64 colonies/!00 ml (geometric mean) and 427 colonies/!00 ml (instantaneous level), respectively, based on the State of Maine Water Classification Program criteria for Class B waters found at 38 M.R.S.A. §465(3)(B) at the time ofpermitting along with a minimum monitoring frequency requirement of2/Week. During calendar year 2005, Maine's Legislature approved a new daily maximum water quality standards of236 colonies/100 ml for water bodies designated as Class Band Class C. In the 12/29/09permit, the Department determined that end-of-pipe limitations for the instantaneous concentration standard of427 colonies/100 mL would be achieved through available dilution ofthe effluent with the receiving waters and need not be revised in MEPDES permits for facilities with adequate dilution (at least 1.1:1 for facilities in Class B waters). The seasonal (May 15- September 30) bacteria limits of 64 colonies/100 ml and 427 col/100 ml are being carried forward in this petmit. The Department reserves the right to impose year-round bacteria limits, ifnecessary, to protect the health, safety and welfare ofthe public.

### MEOIOOSOI FACT SHEET Page 10 of23 W002633-6C-G-R 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) 

### A review ofthe seasonal monthly DMR data for the period May 2011- June 2014 indicates the permittee has reported results as follows: E. coli bacteria (17 DMRs)

Value Limit (col/100 ml) Range (col/100 ml) Mean (col/100 ml) 

### Monthly Average 64 1-29 7 Daily Maximum 427 4-238 59 A review ofthe monitoring data for 

### E coli 

### bacteria indicates the ratios (expressed in percent) ofthe long term effluent average to the monthly average limits can be calculated as 11%. According to Table I ofthe EPA Guidance, a 2/Week monitoring requirement canbe reduced to !/Week. Therefore, this pennitting action is reducing the monitoring frequency for E. coli 

### bacteria to 1/W eek. g. Total Residual Chlorine

- The previous permitting action established a monthly average technology based limit of0.1 mg/L and a daily maximum water quality based limit of 0.20 mg/L that are being carried forward in this pe1mit. Limits on total residual chlorine (TRC) are specified to ensure that ambient water quality standards are maintained and that BPT technology is being applied to the discharge. The Department imposes the more stringent ofthe water quality or technology based limits inpermitting actions. Endof-pipe water quality based concentration thresholds may be calculated as follows:

Parameter Acute Criteria Chronic Criteria Acute Dilution Chronic Dilution Acute Limit Chronic Limit Chlorine 19 ug/L II ug/L 10.7:1 18.8:1 0.20 ing!L 0.21 mg/L Example calculation: Acute- 0.019 mg/L (10.7) = 

### 0.20 mg/L For facilities that need to de-chlorinate the discharge to meet water quality based thresholds (as is with the case with Dover-Foxcroft), the Departmenthas established daily maximum and monthly average BPT limits of0.3 mg/L and 0.1 mg/L respectively. In the case ofDover-Foxcroft, the acute water quality based threshold of0.20 mg/L calculated above is lower than the BPT limit of0.3 mg!L, thus the water quality based limit of0.20 mg/L is being established as daily maximum limit. As for monthly average, the calculated chronic water quality based threshold of0.21 mg/L is higherthan the BPT limit of0.1 mg/L, thus the technology-based limit of0.1 mg/L is imposed. A review ofthe DMRdata for the period May 2011- June 2014 indicates the permittee has reported values as follows: Total residual chlorine (16 DMRs)

Value Limit(_ mg/L) Range (mg!L) Mean(mg/L) 

### Monthly Average 0.10 0.02-0.06 

### .. 0.03 DailyMaximum 0.20 0.02-0.13 0.08

### ME0100501 FACT SHEET Page 11 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) A review ofthe monitoring data for total residual chlorine indicates the ratios (expressed inpercent) ofthe long term effluent average to the monthly average limits can be calculated as 30%. According to Table I ofthe EPA Guidance, a !/Daymonitoring requirement can be reduced to 3/Week. The Depatimentpolicy states that monitoring frequencies will not be reduced by more than one half(112) ofthe cunent monitoring frequency. Therefore, this permitting action is reducing the monitoring frequency for total residual chlorine to 4/W eek. It

### is noted TRC is potentiallytoxic at all times ofthe year. Therefore, whenever elemental chlorine or chlorine based compounds are used to disinfect the discharge from the waste water treatment plant, limitations and monitoring requirements are in effect and enforceable. h. Total phosphorus- Departmentrule 06-096 CMR, Chapter 523 specifies that water quality based limits are necessary when it has been determined that a discharge has a reasonable potential to cause or contribute to an excursion above any State water quality standard including State nanative criteria. 1 

### In addition, 06-096 CMR Chapter 523 specifies that water quality based limits may be based upon criterion derived from a proposed State criterion, or an explicit State policy or regulation interpreting its narrative water quality criterion, supplemented with other relevant information which may include: EPA's Water Quality Standards Handbook, October 1983, risk assessment data, exposure data, information about the pollutant from the Food and Drug Administration, and cunent EPA criteria documents.2 

### USEPA's Quality Criteria for Water 1986 (Gold Book) puts fmih an in-stream phosphorus concentration goal ofless than 0.100 mg/L in streams or other flowing waters not discharging directly to lakes or impoundments, to prevent nuisance algal growth. The use ofthe 0.100 mg/L Gold Book value is consistent with the requirements of06-096 CMR Chapter 523 noted above for use in a reasonable potential (RP) calculation. Based onthe above rationale, the Depatiment has chosen to utilize the Gold Book value ofO.IOO mg/L. It

### is the Depatiment's intent to continue to make determinations ofactual attainment or impairment based upon environmental response indicators from specific water bodies. The use ofthe Gold Book value ofO.IOO mg/L for use inthe RP calculation will enable the Department to establish water quality based limits in a manner that is reasonable and that appropriately establishes the potential for impairment, while providing an opportunity to acquire environmental response indicatordata, numeric nutrient indicator data, and facility data as needed to refine the establishment of site specific water quality based limits for phosphorus. This permit may bereopened phosphorus limits, or monitoring requirements based on new site-specific data.

1 Waste Discharge License Conditions, 06-096 CMR 523(5)(d)(l)(i) (effective date Janumy 12, 2001) 2 06-096 CMR 523(5)(d)(l)(vi)(A)

### ME0100501 FACT SHEET Page 12 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) The permittee conducted total phosphorus testing between June 2006 and September 2008 (n=16). The arithmetic mean concentration discharged for the period is 2.8 mg/L (2,800 ug/L) and 9.7lbs/day and is considered representative ofthe discharge from the facility. The 95% confidence interval was 13.5 lbs/day and the 99% confidence interval was 14.8lbs/day. For the background concentration in the Piscataquis, the permittee conducted sampling upstream ofits discharge inthe summer of2014 indicating the background total phosphorus concentration is 0.009 mg/L. Using the following calculation and criteria, the Dover-Foxcroft facility does have a reasonable potential to exceed the EPA's Gold Book value ofO.lOO mg/L for phosphoms and the Department's Chapter 583 draft criteria of0.030 mg/L. The calculations are as follows: Cr = QeCe 

### + QsCs Qr Qe =effluent flow i.e. facility design flow 0.80MGD Ce = effluent pollutant concentration = 

### 2.8 mg/L (6/06- 9/08) Qs = 7Q10 flow ofreceiving water 14.3 MGD Cs = upstream concentration 0.010 mg/L (summer 2014) Qr =receiving water flow 15.1 MGD Cr = receiving water concentration Cr = (0.8 MGD x 2.8 mg/L) 

### + (14.3 MGD x 0.010 mg/L) = 0.16 mg/L 15.1 MGD Cr = 0.16 mg/L > 0.100 mg/L=? Y

### cs, 

### Reasonable Potential Cr = 0.16 mg/L >0.030 mg/L=? Yes, 

### Reasonable Potential Therefore, a water quality based mass limitation for total phosphorus is being established inthis permitting action. The calculculation is as follows: Given: Chronic dilution factor= 18.8:1 Recommended AWQ goal= 0.100 mg/L Background concentration= 0.010 mg/L Petmitted effluent flow 0.80 MGD EOP concentration= [Dilution factor x 0.90 x AWQ goal] 

### + [0.10 x AWQC goal] EOP concentration= [(18.8 x 0.90 x 0.100 ug/L) 

### + (0.10 x 100 ug/L)] = 1.7 mg/L Monthly average mass limit: (0.80 MGD)(8.34lbs/gal)(l.702 mg/L) = 

### lllbs/day

### MEOI00501 FACT SHEET Page 13 of23 W002633-6C-G-R 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd)

1. 

### pH Range- The previous permitting action established a technology based BPT pH range limitation of6.0-9.0 standard units pursuant to Departmentrule, 06-096 CMR Chapter 525(3)(III)(c) and is being carried forward inthis permiting action. A review of the DMR data for the period May 2011- June 2014 indicates the permittee has reported values as follows: pH (DMRs = 42)

Value Limit (su) Minimum (su) Maximum 

### (sll}_ Range 6.0-9.0 8.9 6.9 Given the excellent compliance history, the Depmiment is making a best professional judgment to reduce the monitoring frequency for pH from 5/Week to 1/Weekto be consistent with the monitoring :fi·equency for BOD and TSS. J. 

### Whole Effluent Toxicitv (WET) and Chemical Specific Testing Maine law, 38 M.R.S.A., Sections 414-A and 420, prohibitthe discharge ofeffluents containing substances in amounts that would cause the surface waters ofthe State to contain toxic substances above levels set forth in Federal Water Quality Criteria as established bythe USEP

### A. Department Rules, 06-096 CMR Chapter 530, Swface Water Taxies Control Program, and Chapter 584, Swface Water Quality Criteria for Toxic Pollutants set forth ambient water quality criteria (AWQC) for toxic pollutants and procedures necessary to control levels oftoxic pollutants in smface waters. WET, priority pollutant and analytical chemistry testing as required by Chapter 530, is included in this permit in order to fully characterize the effluent. This permit also provides for reconsideration ofeffluent limits and monitoring schedules after evaluation oftoxicity testing results. The monitoring schedule includes consideration ofresults cunently onfile, the nature ofthe wastewater, existing treatment and receiving water characteristics. WET monitoring is required to assess and protect against impacts upon water quality and designated uses caused by the aggregate effect ofthe discharge on specific aquatic organisms. Acute and chronic WET tests are performed on invertebrate and vertebrate species. Priority pollutant and analytical chemistry testing is required to assess the levels ofindividual toxic pollutants inthe discharge, comparing eachpollutant to acute, chronic, and human health AWQC as established in Chapter 584. Chapter 530 establishes four categories oftesting requirements based predominately on the chronic dilution factor. The categories are as follows: I) Level I- chronic dilution factor of<20: 1. 2) Level II- chronic dilution factor of2:20:1 but <100:1. 3) Level III- chronic dilution factor 2::100:1 but <500: 1 or >500: I and 

### Q2::1.0 MOD 4) Level IV- chronic dilution >500:1 and 

### Q_:::1.0 MODME0100501 FACT SHEET Page 14 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Departmentrule Chapter 530 (l)(D) specifies the criteria to be usedin dete1mining the minimum monitoring frequency requirements for WET, prioritypollutant and analytical chemistJy testing. Based onthe Chapter 530 criteria, the permittee's facility falls into the Level I frequency category as the facility has a chronic dilution factor of<20: 1. Chapter 530(1)(D)(l) specifies that routine screening and surveillance level testing requirementsare as follows: 

### Surveillance level testing

- Beginning upon issuance ofthe permit and lasting through 24 months prior to permit expiration (Years 1, 2 & 3 ofthe term ofthe permit) and commencing again 12 months priorto pe1mit expiration (Year 5 ofthe term ofthe permit).

Level WET Testing Priority pollutant testing Analytical chemistly I 2 peryear None required 4 peryear 

### Screening level testing -Beginning 24 months prior to permit expiration and lasting through 12 months prior to permit expiration (Year 4 ofthe term ofthe permit) and every five years thereafter ifa timelyrequest for renewal has been made and the permit continues inforce, or is replaced by a permit renewal containing this requirement,

Level WET Testing Prioritypollutant testing Analytical chemistry I 4 per year 1per year 4 per year A review ofthe data on file withthe Department indicates that to date, the permittee has fulfilled the WET and chemical-specific testing requirements ofChapter 530. See 

### Attachment C ofthis Fact Sheet for dates and test results for WET and 

### Attachment D for chemical specific testing dates and results for pollutants ofconcem.

# ~ Depmiment rule Chapter 530(D)(3)(c) states in part "Dischargers in Levellmay reduce surveillance testing to one WETor specific chemicalseriesperyearprovided that testing in thepreceding 60 months does not indicate any reasonablepotential for i!Xceedence as calculatedpursuant to section 3(E)." Chapter 530 §(3)(E) states "For ejjluent monitoring data andthe variability of the pollutant in the ejjluent, the Department shall apply the statistical approach in Section 3.3.2 and Table 3-2 ofUSEP A's "Technical SupportDocument for Water Quality-Based Taxies Control" (USEPA Publication 505/2-90-001, March, 1991, EPA, Office ofWater, Washington, D. 

### C.) to data to dete1mine whetherwater-quality basedejjluent limits must be included in a waste discharge license. Where it is determined through this approach that a discharge containspollutants or WETat levels that have a reasonablepotential to cause or contribute to an exceedence of water quality criteria, appropriate water quality-basedlimits mustbe established in any licensing action." 

## IME0100501 FACT SHEET Page 15 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Chapter 530 §3 states, "The Department shall establish appropriate discharge prohibitions, effluent limits andmonitoringrequirements in waste discharge licenses 

## if a discharge containspollutants that are or maybe discharged at levels that cause, have reasonablepotential to cause, or contribute to an ambient excursion in excess of a numeric or narrative water quality criteria or that may impair existing or designated uses. The licensee mustalso control whole effluent toxicity (WET) when discharges cause, have a reasonablepotential to cause, or contribute to an ambient excursion above thenarrative water qualify criteria. "In determining 

## if effluent limits are required, the Departmentshall consider all information on file andeffluent testing conductedduring thepreceding 60 months. However, testingdone in thepe1jormance of a Toxicity Reduction Evaluation (TRE) approvedby the Department may be excluded from such evaluations. " · WET Evaluation- The previous permitting action did not establish A-NOEL or C-NOEL limits for the water flea (Ceriodaphnia dubia) orthe brook trout (Salvelinus fontinalis) as a statistical evaluation at that time indicated the discharge did not exceed orhave a reasonable potential to exceed critical acute and or chronic WET thresholds of 9.3% and 5.3% respectively. The critical thresholds were calculated as the mathematical inverse ofthe acute and chronic dilution factor of 10.7:1 and 18.8:1 respectively. On August 21, 2014, the Depatiment conducted a statistical evaluation on the most recent 60 months ofWETtest results onfile with the Department in accordance withthe statistical approach specified in 06-096 CMRChapter 530. The 8/21/14 statistical evaluation indicates the discharge from the permittee's waste water treatment facility has two test results (2/27/12 and 6/10/13) for the brooktrout that have a reasonable potential to exceed the critical chronic threshold of5.3%
. Therefore, this petmit is establishing a C-NOEL limit of5.3% for the brook trout along with a monitoring frequency 2/Y ef).r which is equivalent to a routine surveillance level oftesting. Forthe water flea, the Town qualifies for the reduced testing frequency provision found at Chapter 530 §2(D)(3) that states "Dischargers in LevelI may reduce surveillance testing to one WETor specific chemical seriesper yearprovidedthat testing in the preceding60 months does not indicate any reasonablepotential for exceedence as calculated pursuant trrsection 3(E). "Therefore, this permitting action establishes a surveillance level monitoring frequency of 1/Year for the water flea and 2/Y ear for the brooktrout beginning upon issuance ofthe permit and lasting through 24 months prior to permit expiration (Years 1, 2 & 3 ofthe term ofthe permit) and commencing again 12 months prior to permit expiration (Year 5 ofthe tetm ofthe petmit).MEOI00501 FACT SHEET Page 16 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Chapter 530(2)(D)(4) states; (4)Alldischargers having waivedor reducedtesting must file statements withthe Department on or before December 31 of eachyear describing thefollowing. (a) Changes in the number or types of non-domestic wastes contributed directly or indirectly to the wastewater treatmentworks that may increase the toxicity of the discharge; (b)Changes in the operation of the treatmentworks that may increase the toxicity of the discharge; and (c) Changes in industrial mamifacturingprocesses contributing wastewater to the treatment works that may increase the toxicity of the discharge. Giventhe Town qualifies for the reduced surveillance level WETtesting frequency provision found at Chapter 530 §2(D)(3), Special Condition 

### J, 06-096 CMR 530(2)(D)(4), Statement For Reduced/Waived Taxies Testing ofthis permitrequires the permittee to file said statement. Beginning 24 months prior to permit expiration and lasting through 12 months prior to permit expiration (Year 4 ofthe term ofthe permit) and every five years thereafter ifa timely request for renewal has beenmade and the permit continues in force, or is replaced by a permitrenewal containing this requirement, the pennittee shall reve1i to a routine screening level WET testing of !/QuarterWET testing for both the water flea and brook trout. Analytical chemistly and priority pollutant testing- The 12/29/09 permit established monthly average and or daily maximum water quality based mass and concentration limits for ammonia, total copper and total lead based on a statistical evaluation ofthe most current 60 months oftests results on file at the Department at that time. Chapter 530 §(3)(E) states "
... that a discharge containspollutants or WETat levels that have a reasonablepotential to cause or contribute to an exceedence of water quality criteria, appropriate water quality-based limits mustbe established in any licensing action. " Chapter 530 §4(F) states inpart "Where there is more than one discharge into the same fresh or estuarine receivingwater or watershed, the Departmentshall consider the cumulative effects of those discharges when determining the need for andestablishment of the level of ejjluent limits. The Departmentshall calculate the total allowable discharge quantity for specificpollutants, less the water quality reserve andbackground concentration, necessary to achieve or maintain water quality criteria at allpoints of discharge, and in the entire watershed. The total allowable discharge quantity for pollutants must be allocatedconsistentwith thefollowingprinciples.ME0100501 FACT SHEET Page 17 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Chapter 530 §4(C), states "The backgroundconcentration of specific chemicals mustbe included in all calculations using thefollowingprocedures. The Department may publish and periodically update a list of default backgroundconcentrations for specific pollutants on a regional, watershedor statewide basis. In doing so, the Department shall use data collected ji·om reference sites that are measuredatpoints not significantly affectedbypointandnon-pointdischarges andbest calculatedto accurately represent ambientwater quality conditions The Departmentshall use the same general methods as those in section 4(D) to determine backgroundconcentrations. Forpollutants not listedbythe Department, an assumedconcentration of 10% of the applicable water quality criteria mustbe used in calculations. " The Departmenthas limited information on the background levels ofmetals in the water column in the Piscataquis River inthe vicinity ofthe permittee's outfall. Therefore, a default background concentration of 10% ofthe applicable water quality criteria is being used inthe calculations ofthis permitting action. Chapter 530 4(E), states "In allocating assimilative capacity for toxicpollutants, the Departmentshall holdaportion of the total capacity in an unallocatedreserve to allow for new or changeddischarges andnon-pointsource contributions. The unallocated reserve must be reviewedandrestoredas necessmy at intervals of not more thanjive years. The water quality reserve mustbe not less than 15% of the total assimilative quantity. " Evaluations must be donefor individualpollutants of concern in each watershed or segment to assure that water quality criteria are metatallpoints in the watershedand, 

## if

appropriate, within tributaries of a larger river. The total assimilative capacity, less the water quality reserve andbackground concentration, may be allocatedamong the discharges according to thepast discharge quantities for each as apercentage of the total quantity of discharges, or another comparable methodappropriate for a specific situation and pollutant. Past discharges of pollutantsmust be determined using the average concentration discharged during the

# ~ past five years andthefacility's licensed flow. The Picataquis River is a tributaty to the Penobscot River. Three municipal waste water treatment facilities that are subject to the Department's Chapter 530 testing requirements discharge to the Piscataquis River. The waste water treatment facilities me the Milo · Water District, the Town ofDover-Foxcroft and the Guilford-Sangerville Sanitary District. The Milo Water District facility is the most downstream facility and the Guilford Sangerville facility isthe most upstream facility. As previously cited, Chapter 530 requires that AWQC must be met at the confluence ofthe Piscataquis River and the Penobscot River as well as at the individual discharge points on the Piscataquis River after taking into consideration historic discharge levels for all three facilities as well as an allocation dedicated to background (1 0% ofAWQC) and a reserve (15% ofAWQC). 

### IME0100501 FACT SHEET Page 18 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) On August 21, 2014, the Department conducted statistical evaluations based on 15% of the ambient water quality criteria reserve being withheld (Report ID 706) and 0% ofthe reserve ofthe criteriabeing withheld (Report ID 705) to determine ifthe unallocated assimilative capacity would avoid an exceedance or avoid a reasonable potential to exceed applicable ambient water quality criteria for toxic pollutants. Repmi ID 705 indicates Dover-Foxcroft would no longer have a reasonable potential to exceed the chronic ambient water quality criteria for lead. Therefore, the Department is utilizing the full 15% ofthe unallocated assimilative capacity inthe statistical evaluation when establishing limits for toxic pollutants in waste discharge licenses for facilities inthe Penobscot River watershed including the Piscatquis River watershed. The statistical evaluation (Report ID 705) indicates the Townhas two test results that have a reasonable potential to exceed the chronic AWQC for ammonia andhas four test results that have a reasonable potential to exceed both the acute and chronic AWQC for total copper. The 8/21/14 statistical evaluation indicates all three facilities have discharged detectable levels ofammonia and copper. Depatiment guidance that establishes protocols for establishingwaste load allocations (mass) can be found as 

### Attachment E ofthis Fact Sheet. The guidance states that the mostprotective ofwater

### q~ality becomes the facility's allocation. According to the 8/21/14 statistical evaluation, both ammonia and copper are to be limited based on the segment allocationmethod. In May 2012, Maine law 38 M.R.S.A. §464,**~~** K was enacted whichreads as follows, 

### "Unless otherwise requiredbyan applicable effluent limitation guideline adoptedby the department, any limitations for metals in a waste discharge license may be expressed only as**mass~based** 

### limits. " There are no applicable effluent limitation guidelines adopted by the Depatiment or the USEPA for metals from a publicly owned treatment works. 

### Segment allocation methodology Historical Average: Forthe segment allocationmethodology, the historical average quantity (mass) for each pollutant ofconcern for each facility is calculated utilizing the arithmetic mean ofthe concentrated values reported for each pollutant, a conversion factor of8.34 lbs/gallon and the monthly average permitlimit for flow. For the Dover-Foxcroft facility, historical averages for ammonia and copper and were calculated as follows:

### ME0100501 FACT SHEET Page 19 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) Ammonia Mass limits Mean concentration= 16,420 ug/L or 16.42 mg/L Petmit flow limit= 0.80 MGD Historical average mass= (16.42 mg/L)(8.34)(0.80 MGD) = 109.554lbs/day The 8/21/14 statistical evaluation indicates the historical average mass ofammonia discharged byDover-Foxcroft is 69.10% ofthe ammonia discharged by the tln·ee facilities on the Piscataquis River. Therefore, Dover-Foxcroft's segment allocation for ammonia is calculated as 69.10% ofthe cln·onic assimilative capacity ofthe river at Milo, the most downstream facility. The assimilative capacity atMilo is calculated as follows: 7Q10 = 27.7 cfs (0.6464) = 17.9 MGD Chronic AWQC = 3,006 ug/L or 3.006 mg/L (based on T=25°C and pH=7.0 su) Taking into consideration 0% ofthe AWQC reserve and 10% for background, the assimilative capacity ofthe Piscataquis River at Milo is: Cln·onic = (3.006 mg/L)(0.90)(8.34lbs/gal)(17.9 MGD) = 404 lbs/day Monthly average (cln·onic) mass limitation for ammonia for Dover-Foxcroft is calculated as follows: Monthly average: (Chronic assimilative capacity mass)(% oftotal ammonia discharged) (404lbs/day)(0.6910) = 

### 279lbs/day Because the AWQC is based on a temperature of25°C, the ammonia limitation established in this petmit is only applicable from June 1-September 30 ofeach year. Copper Mass limits Mean concentration= 6.3 ug/L or 0.0063 mg/L Permit flow limit= 0.80 MGD Historical average mass= (0.0063 mg/L)(8.34)(0.80 MGD) = 0.0421lbs/dayME0100501 FACT SHEET Page 20 of23**W002633~6C-G-R** 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) 

### Copper Mass limits The 8/21114 statistical evaluation indicates the historical average mass ofcopper discharged by Dover-Foxcroft is 27.72% ofthe copper discharged by the three facilities on the Piscataquis River. Therefore, Dover-Foxcroft's segment allocation for copper is calculated as 27.72% ofthe acute and chronic assimilative capacities ofthe river at Milo. The assimilative capacities at Milo are calculated asfollows: IQIO = 18.5 cfs (0.6464) = 12.0 MGD 7QIO = 27.7 cfs (0.6464) = 17.9 MGD Acute AWQC = 3.07 ug/L or 0.00307 mg/L Chronic AWQC = 2.36 ug/L or 0.00236 mg/L Taking into consideration 0% ofthe AWQC reserve and 10% for background, the assimilative capacities are: Acute= (0.00307 mg/L)(0.90)(8.34 lbs/gal)(l2.0 MGD) = 0.276lbs/day Chronic= (0.00236 mg/L)(0.90)(8.34 lbs/gal)(17.9 MGD) = 0.317 lbs/day Daily maximum (acute) and monthly average (chronic) mass limitations for copper are calculated as follows: Daily maximum: (Acute assimilative capacity mass)(% oftotal copper discharged) (0.276 lbs/day)(0.2772) = 0.076 lbs/day Monthly average: (C!U"onic assimilative capacity mass)(% oftotal copper discharged) (0.317 lbs/day)(0.2772) = 0.088 lbs/day The calculations above are co11'ect in that the monthly average limitation is greaterthan the daily maximum limit. This will occur when the ratio between the acute and chronic AWQC is smaller than the ratio between the acute (IQIO) and chronic (7Ql0) receiving water flows. Chapter 530 does not establish monitoring frequencies for parameters that exceed or have a reasonable potential to exceed AWQC. Monitoring frequencies are established on case-by-case basis given the timing, severity and frequency ofoccu11'ences ofthe exceedences orreasonable potential to exceed applicable critical water quality thresholds. Therefore, this permitting action is making a bestprofessionaljudgment to establish the monitoring frequency for copper at the routine surveillance level frequency of 1/Quarter specified in Chapter 530. The monitoring frequency for ammonia is being established at twice per year (2/Year) to coincide with the seasonal limitation.MEOI00501 FACT SHEET Page 21 of23 W002633-6C-G-R 

### 6. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (cont'd) As for the remaining chemical specific parameters tested to date, none ofthe test results in the 60-month evaluation period exceed orhave a reasonable potential to exceed applicable acute, chronic orhumanhealth AWQC. Therefore, this permitting action is establishing a reduced surveillance level reporting and monitoring frequency of 1/Y ear for analytical chemistry testing beginning upon issuance ofthe permit and lasting through 24 months prior to petmit expiration (Years I, 2 & 3 ofthe term ofthe permit) and commencing again 12 months prior to permit expiration (Year 5 ofthe term ofthe permit). As with reduced WET testing, the permittee must file an armual certification withthe Departmentpursuant to Chapter 530 §2(D)(3) and Special Condition

### J, 06-096 CMR 530(2)(D)(4), StatementFor Reduced/Waived Taxies Testing ofthis permit. Beginning 24 months priorto permit expiration and lasting through 12 months prior to petmit expiration (Year 4 ofthe term ofthe permit) and evetyfive years thereafter ifa timely request for renewal has beenmade and the permit continues in force, or is replaced by a permitrenewal containing this requirementthe permittee shall conduct routine screening level analytical chemistry testing at 1/Quarter and prioritypollutant testing of 1/Year. 

### k. Mercury: Pursuant to Certain deposits anddischargesprohibited, Maine law, 38 M.R.S.A. 

### § 420 and Waste discharge licenses, 38 M.R.S.A. 

### §413 and Interim Effluent Limitations and Controls for the Discharge ofMercmy, 06-096 CMR 519 (last amended October 6, 2001), the Department issued a Notice ofInterim Limits for the Discharge of Mercury to the petmittee onMay 23, 2000, thereby administratively modifYing MEPDES #MEOI00501/WDL #**W002633~5B-D-R** by establishing interim monthly average and daily maximum effluent concentration limits of 16.9 parts per trillion (ppt) and 25.3 ppt, respectively, and a minimum monitoring frequency requirement offour (4) tests per year for mercmy. OnFebruary 6, 2012, the Department issued a minor revision ofthe permit by reducing the monitoring frequency to 1/Year. Maine law 38 M.R.S.A., §420 1-B,(B)(l) states that a facility is not in violation ofthe AWQC for mercury ifthe facility is in compliance with an interim discharge limit established by the Departmentpursuant to section 413, subsection II. A review ofthe Department's database for the period 2004 to the present indicates mercmytest results reported have ranged from 0.63 pptto 11.0 ppt with an arithmetic mean (n=36) of 3.1 ppt.MEOI00501 FACT SHEET Page 22 of23 W002633-6C-G-R 7. 

### ANTI-BACKSLIDING Federal regulation 40 CFR, §122(1) contains the criteriafor what is often referred to as the anti-backsliding provisions ofthe Federal Water Pollution Control Act (Clean Water Act). In general, the regulation states that except for provisions specified inthe regulation, effluent limitations, standards or conditions mustbe at least as stringent as the final effluent limitations, standards or conditions in the previous permit. Applicable exceptions include(!) material and substantial alterations or additions to the permitted facility occurred after permit issuance whichjustifythe application ofa less stringent effluent limitation and(2) information is available which was not available at the time ofthe permit issuance (other thanrevised regulations, guidance ortest methods) and which wouldjustifythe application ofless stringent effluent limitations atthe time ofpermit issuance. Thispermitting action is establishing less stringent water qualitybased mass limitations for total copper given the 15% reserve capacity withheld inthe the previous permitting action is being allocated inthis permitting action as doing so eliminates the need for other water quality based limits for other parameters. This constitutes newinformation since issuance of the previouspermitting action. 

### 8. ANTI-DEGREDATION- IMPACT ON RECEIVING WATER QUALITY Maine's anti-degradation policy is included in 38 M.R.S.A., Section 464(4)(F) and addressed inthe Conclusions section ofthis permit. Pursuant to the policy, where a new or increased discharge is proposed, the Department shall detennine whether the discharge will result in a significant lowering ofexisting water quality. Increased discharge means a discharge that would add one or more newpollutants to an existing effluent, increase existing levels ofpollutants in an effluent, or cause an effluent to exceed one ormore ofits current licensed discharge flow or effluent limits, after the application ofapplicable best practicable treatment technology. This permitting action revises previously established effluent limitations and monitoring requirements for total copper. The rationale for these actions is contained in Section 6 of this Fact Sheet. Based on the information provided inthe referenced section, the Departmenthas made the determination that the discharge approved bythis pe1mit will not result in a significant lowering ofwater quality. As permitted, the Departmenthas determined the existing and designated water uses will be maintained and protected and the discharge will not cause or contribute to the failure ofthe Piscataquis River to meet standards for Class B classification.

### ME0100501 W002633-6C-G-R FACT SHEET Page 23 of23
9. DISCHARGE IMPACT ON RECEIVING WATER QUALITY The Departmenthas made a best professionaljudgment detennination based on infonnation gathered to date, that as permitted, the discharge will not cause or contribute the failure of the receiving water to meet the standards ofits ascribed classification and the designated uses ofthe river will continue to be maintained and protected. The Department is scheduled to perform a comprehensive evaluation ofmore recent data collected, calibrate an existing model ofthe river and prepare a TMDL for the 13.44 mile segment in 2016. Iffuture modeling mns determine that at full permitted discharge limits, the discharge is causing or contributing to the non-attainment, this permit will be re-opened per Special Condition L, Reopening of The License For Modifications, 

### to impose more stringent limitations to meet water quality standards. 10. PUBLIC COMMENTS Public notice ofthis application was made inthe Piscataquis Observer newspaper on August 6, 2014. The Department receives public comments on an application until the date a final agency action is taken onthat application. Those persons receiving copies ofdraft pennits shall have at least 30 days in which to submit comments on the draft or to request a public hearing, pursuant to Chapter 522 ofthe Department's rules. 11. DEPARTMENT CONTACTS Additional information concerning this permitting action may be obtained from and written comments should be sent to: Gregg Wood Division ofWater Quality Management Bureau ofLand and Water Quality Department ofEnvironmental Protection 17 State House Station Augusta, Maine 04333-0017 E-mail: gregg.wood@maine.gov Telephone: (207) 287-7693 

## I I 

### I 12. RESPONSE TO COMMENTS During the period ofMarch 30,2015, through the issuance date ofthe permit/license, the Department solicited comments on the proposed draft pennitllicenseto be issued for the discharge(s) from the permittee's facility. The Department did not receive comments from the permittee, state or federal agencies or interested parties that resulted in any substantive change(s) inthe tenns and conditions ofthe permit. Therefore, the Department has not prepared a Response to Comments.

# ATTACHMENT A

I 

## ! I 

# I , 

# I I L 

## I 

# f i 

# I l I 

## r ,
, I 

# I I 1 

# r '



### I 

# l 1 

### i 

# I

I I I

# ATTACHMENT B \
f 

## I !

# ~**~** ; 

## ' ! '


# r I I 

## I 

# I 

# IFIGuKE 1-1 PROCESS SCHEMATIC**GrJtaglktln<~** 1rdi110111:S...,pllog. Saeenlng & LAGOON#1 Volume: 11.6 MG G2 Detention 1ime: 14.5 Days@ 0.8MGD Depth: 9.5 Feet**~C1** Aeration: 254 Units ofEDl FlexairTube Membranes & 70HP Blower UC)uid Elevation: 357.0
)

C2. ( 1 .\: Dike Elevation: 380.0 Bottom Elevation: 375.5 V3**CXJ--6liL~** T 4 V4 ' LAGOON#2' Volume: 5.8 MG LAGOON#3 Volume: 5.8 MG Detention 1ime: 7.3 Days@ O.SMGD Detention 1ime: 7.3 Dayso@:.QSMG&.·: · ( 

# I i T5 Depth: 10 Feet Depth: 1 0 Feet :.· Aeration: 3- 5HP PropetlerJ\spirator Units Aeration: 4- 5HP**Propel!eP~Uoifs'** ... · Liquid Elevation: 834.0 Liquid Elevation: 385.0 ·.'·.•. Dike Elevation: 337.0 Dike Elevation: 338.1 Bottom Elevation: 324.0 Bottom Elevation: 325.0 V8 TS 17@) ) I T11 G4 G5 T17**}---------------------~** ao

G1 WEST REeO BED CAST REED 6EO

## ~~~-----------r ) LEDGEND NormalFiowOlroctlOtl 

### ----®--**oaV-!Mo...w~t~** A1:om81oftowOiroclion**~. ~~"'(N..,.,QtyeJOO«<)**  E1 DryWeather Flow 02MGO Manhole{Nom'l31 Flew}
-**Cooiro~·Manholef..·** · · E2 0.6MGD 

### --Q­ M<lllholo(Altomato Flow)
8/1512014 Introduction 2012 Page6 of 11

# ATTACHMENT C

i I



# t I l 

## I ' 

### ' 

# I**~** !
i 

### 1­ 

# l I

I 

# I

### ---··-·-·----·-·--·--······**-··--~-----····**

----··--··· ···-· DOVER-FOXCROFT NPDES= ME010050 Effluent Umit: Acute(%)= 9.314 Chronic (%) = 5.299 Species Test Percent sample date Critical 0/o Exception R.P TROUT A_NOEL 100 12/07/2010 9.314 TROUT A_NOEL 100 09/14/2011 9.314 TROUT A_NOEL 50 02/27/2012 9.314 TROUT A_NOEL 50 05/10/2013 9.314 TROUT A_NOEL 100 02/04/2014 9.314 TROUT A_NOEL 100 07/14/2014 9.314 TROUT A_NOEL 100 09/15/2014 9.314 TROUT C_NOEL 50 12/07/2010 5.299 TROUT C_NOEL 100 09/14/2011 5.299 TROUT C_NOEL 10 02/27/2012 5.299 TROUT C_NOEL 5.32 05/10/2013 5.299 TROUT C_NOEL 50 02/04/2014 5.299 TROUT C_NOEL 100 07/14/2014 5.299 TROUT C_NOEL 100 09/15/2014 5.299 WATER FLEA

. A_NOEL 100 09/14/2011 9.314 WATER FLEA A_NOEL 100 02/27/2012 9.314 WATER FLEA A_NOEL 100 05/10/2013 9.314 WATER FLEA A_NOEL 100 02/04/2014 9.314 WATER FLEA A_NOEL 100 07/14/2014 9.314 WATER FLEA A_NOEL 100 09/16/2014 9.314 WATER FLEA C_NOEL 100 09/14/2011 5.299 WATER FLEA C_NOEL 50 02/27/2012 5.299 WATER FLEA C_NOEL 50 06/10/2013 5.299 WATER FLEA C_NOEL 50 02/04/2014 5.299 WATER FLEA C_NOEL 100 07/14/2014 5.299 WATER FLEA C_NOEL 10 09/16/2014 5.299

## L 

# I I



# ATTACHMENT D

# ~ I 

# I 

# I i IFacility Name: DOVER-FOXCROFT NPDES: ME0100501 Monthly Dally Total Test Test # By Group Tei!t Date (Flow MGD) Number M V BN P 0 A Clean Hg**_1_2f!~[2_o_o_g_** 

### ________**2,~L** 

### ____ o_._2?__

________**~-** 

### ________**-~---** 

### Q

___()

___

### 9_

___ 

## o

____ o________f

_______ ()

__ Monthly Dally Total Test Test# By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**}_2fQ?£2.Q_~o__-** ---- __**_o"~~**

### _____Q_}§_---

------

### !9_-------

__ 1_o_-_Q

___()

___

### _o_-- _9

____ 

### o_----**---~--** 

### ----- ()-­ Monthly Daily Total Test Test # By Group Test Date (Flow MGD) Number M V BN p 0 A Clean Hg**03{()~£2.0.~!**

### ________**9"~()** 

### _____o_._1_1

___________2

__________2_

___()

___()

____o

____ 

## o

____ o________ _______()

__ Monthly Dally Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**9§LQ~(2_0.!!** 

### __ ---**_0"~-~-** ____**o_.§~--------** _}_-----

____2-- _Q

___()

____9

___ _1

__ -

### _o_---- ---**~-** 

### ------ ()_­ Monthly Dally Total Test Test# By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**().9[!<!£20.~!** 

### ___----

_ _9,2_2_--

-- _Q_.J§_---

----

__

### 2_!

-------

__ 1_9

___Q_-- 

### ()---I}_-_!!-

__ o________**~-----** 

### __()_­ Monthly Daily Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg 

### _1_2f!3L2.0.!!-

----- __**_9,2_~**

### _____ Q_._2_2_-------

--**~--** 

### --

______2__-_()

--- ()-

-- 

### 9_-- _1_--

### _o______--**~-----** 

### --()

__ Monthly Daily Total Test Test# By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**.0_2{??£2.0.~2_--------** 

### 9"**!~----** 

### _o_._l?_---

----

__2_!

__------_1_9_--()--- ()

--_2_-- 

### !!

___ o__------f--- 

### ----0-. Monthly Daily Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**2?{!!;£2.0.~2_**

### __---___**_9,~5** 

### ___-**_Q_.~2** 

### __-------- _2_-----

--

__

### 2__--Q

___9___

### 2

___0_

--

### _o_---- --- -------9-­ Monthly Dally Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg 

### 2?D?I_2_Q_!?_

_________**O,?~** 

### _____

### Q_._2_1

__________ ?__

________2_

____()

___()

___ 1}

____1

____ 

### o________ _______()_. Monthly Dally Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg 

### 29f!!l£2Q_12

__ - ---_9,?!-

---_Q_._l_?_------

--- _1__---

_____o_

___()

___()--- 

### 9_-- _1_

-- _o________

### f------ _()_­ Monthly Dally Total Test Test# By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg 

### _1_1{()?[212!2_

__ "

_____ 

### .9, !!

_____ o_.J 

### _1

___________2

__________

### ?.

___()

___()

___2

____ 

## o

____ o________f

_______()

__ Monthly Dally Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg 

### ()_1!1!;1_2_0.!3_

________.9,!!l

_____ Q_.J?

_ _________

### _2

__________2_

___()

___ ()

___

### 2

____ 

## o

____ o________ _______I)__ Monthly Dally Total Test Test# By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**_Q_?f()~£?.0.!3_**

### _________**~~------~~-----------_l** 

### __________!

___()

___()

____o ___ ____ o________f

_______()

__Facility Name: DOVER-FOXCROFT NPDES: ME0100501 Monthly Daily Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**!l§L!Q£2_0.~3_**

### ________**.9"~~---** 

### __**o_.~~-** 

## _________2_!

________!-.9

_

__Q

___

### 9

___9_

__ !L_O.

_______ _______()

__ Monthly Dally Total Test Test# By Group Test Date (Flow MGD) Number M V BN P o A Clean Hg**Sl?L!~£2.0.~3_**

### ________**.9"~~---** 

### __**o_.~§** 

### _ _________**~---** 

### _______2_

___Q

___

### 9

___.9

____1

____ 

## o________f

_______()

__ Monthly Dally Total Test Test# By Group Test Date (Flow MGD) Number M V BN P o A Clean Hg**J..?LQ~£2.0.!3_**

### ________**5l,~L** 

## ____ 

# o.:s:s__________ ?_

_________

### L_Q

___

### 9

____9

____ 

# o

____ o_
_______**~--** _____

### 9_

_ Monthly Daily Total Test Test# By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**Sl?LQ~£2.0.~4.**

### ________**.9"!~-** 

### ____ O.·?:S

________**--~!** 

### ________ !-.9

_

__Q

___9_

___9

___

### !1

___ o_

_______

### f

_______()

__ Monthly Daily Total Test Test# By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**.9?L!~@!4.** 

### ________**.9"<.!~**

### _____**o_.g~_ --------~~~--**  

### _______ 14

___ 2_8

___ 45.

__**~~--!!** 

### __**~~** 

### _______f

_______

### 9

__ Monthly Daily Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg**.9?!~?[2.0.1_4_**

### _________**1'_1~-** _____,N_R

________**---~-** _________Q

___()

___

### L _ _9

___

## o

____ o____ ..___f

_______()

__ Monthly Dally Total Test Test # By Group Test Date (Flow MGD) Number M V BN P 0 A Clean Hg 

### .9.9f!()£2_C?.1_4.

________ O.!fl

____ _**'?.·!~-** 

### _________2_!

_________ 1_0

___()

___ ()

___ _9

___ 

### !!

___'?,

_______

### f

_______

### 9_

_Facility. name: DOVER-FOXCROFT Permit Number: ME0100501 Parameter: AMMONIA Test date Result (ug/1)



# ----------------------------------- Lsthan



# ------------ 12/07/2010 24500.000 N 06/08/2011 35700.000 N 09/14/2011 130.000 N 12/13/2011 7800.000 N 02/27/2012 28000.000 N 07/17/2012 390.000 N 09/18/2012 10700.000 N 06/10/2013 25700.000 N 08/14/2013 280.000 N 02/04/2014 31000.000 N 07/14/2014 144.000 N 09/16/2014 1452.000 N Parameter: COPPER Test date



## ---------------- Result (ug/1)



## ------------------- Lsthan



## ------------ 12/14/2009 8.000 N 12/07/2010 5.000 N 03/03/2011 13.000 N 06/08/2011 6.600 N 09/14/2011 4.000 N 12/13/2011 5.000 N 02/27/2012 14.000 N 05/15/2012 4.000 N 07/17/2012 3.000 y 11/07/2012 5.410 N 01/15/2013 6.310 N 06/10/2013 3.730 N 08/14/2013 3.000 y 12/03/2013 4.630 N 02/04/2014 11.900 N 07/14/2014 3.000 y 09/16/2014 3.000 y 

# r

# ATTACHMENT E 

# t 

# I**~** i . 

# I

. 

### I I

\ L 

### I ' 

# I I I 

### I 

# I

# ~ I I



### !

### MAINE DEPARTMENT OFENVIRONMENTAL PROTECTION MEMORANDUM DATE: October2008 TO: Interested Parties FROM: Dennis Merrill, DEP SUBJECT: DEP's systemfor evaluatingtoxicity from multiple discharges 

### ****************************************************************************** Following the requirements ofDEP'srules, Chapter**5~0,** 

### section 4(F), the Department is evaluating discharges oftoxic pollutants into

# a freshwater river system in orderto prevent cmnulative impacts from multiple discharges. This is being through the use ofa computer programknown internally as "DeTox". The enclosedpackage ofinformation is intended to introduce you to this system. Briefly, the DeTox program evaluates each wastewaterfacility within awatershed in three different ways in order to characterize its effluent: 1) the facility's pasthistory ofdischarges, 2) its potential toxicity at the point ofdischarge on an individual basis, and 3) the facility's contribution to cumulative toxicity within ariver segmentin conjunction with otherfacilities. The value thatis mostprotective ofwaterquality becomes the value thatis held inthe DeTox system as an allocation for the specific facility and pollutaot. The system is not static and uses afive-year "rolling" data window. This means that, overtinie, old test results drop offand newer ones are added. The intent ofthis process is to maintain current, imiformfacility data to estimate contributions to ariver'stotal allowable pollutaot loading priorto each permitrenewaL

·Maoy facilities are required todo only a relatively small amount ofpollutaottesting on their

effluent This means, statistically, the fewer tests done, the greaterthepossibility ofeffluent limits being necessary based on the facility's small amount ofdata. To avoid this sihmtion, most facilities, especially those with low dilution factors, should considerconducting more than the minimum mnnber oftests required by the rules. Attached you will find three doctnnents with additional information on the DeTox systein:

• Methods for evaluating the effects ofmultiple discharges oftoxic pollutants • Working definitions ofterms used inthe DeTox system • Reviewing DeTox Reports • Prototype facility and pollutantreports Ifyou have questions as you reviewthese, please do nothesitate to contact me at Dermis.L.Merrill@maine.gov or 287-7788. 

# l l

### MaineDepartmentofEnvironmental Protection Methods for evaluating the effects ofmultiple discharges oftoxic pollutants. Reference: DEP·Rules, Chapter 530, section 4(F) To evaluate discharges oftoxic pollutants into afreshwater river system and prevent cumulative impacts from multiple discharges, DEP uses a computer program called "DeTox that functions as a mathematical evaluation tool. Ituses physical infonnation about discharge sources and river conditions on file with the Department, established water quality criteria and reported effluent test infonnation to perfonn these evaluations. Each toxic pollutant and associated water quality criterion for acute, chronic and/orhumanhealth effects is evaluated separately. Each facility in ariver drainage areahas an assigned position code. This "address" is used to locate the facility on the river segment and ill 

### relation to otherfacilities and tributary streams. All calculations areperfonned inpounds per day to allow analysis on amass balance. Pollutants are considered to be conservative in that once in the receiving water they will not easily degrade and have the potential to accumulate. The process begins with establishing an assimilative capacity for**e<~ch** 

### pollutant and water quality criterion atthe most downstream point in the river segment. Tllis calculation includes set-aside amounts for background and reserve quantities and assumed values for receiving water. pH, temperature and hardness. The resulting amount ofassimilative capacity is available for allocation among facilities on the river. Each facility is evaluated to characterize itspast discharge quantities. The historical discharge, inpounds perday, is figured using the average reported concentration and the facility's pe1mitted flow. As has been pastpractice, areasonablepotential (RP) 

### factor is used as a tool to estimate the largest discharge that may occurwith a certain degree ofstatistical certainty. The RP factor is multiplied by the historical averageto determine an allocation based onpast discharges. The RP factor is ruso multiplied by the singlehighesttest to obtain a maximum day estimate. Finally, the direct average without RP adjustment is used to determine the facility's percent contribution to the river segment in comparison to the sum ofall discharges ofthe · pollutant. This percentmultipliedby the total assimilative capacitybecomes the facility's discharge allocation used in evaluations ofthe segment loadings. Additionally, individual facility discharges are evaluated as single sources, as they have been in the pastto detennine iflocal conditions are more limiting than a segment evaluation.With all ofthis inf01mation, facilities are evaluated in three ways. The methods are: 1. Thefacility's pasthistory. This isthe average quantity discharged duringthe past five years multiplied bythe applicable RP factor. This method is oftenthe basis for im

- allocation whenthe discharge quantity isrelatively small in comparisonto the water

quality based allocation. 2. Anindividual evaluation. This assumes no other dischru:ge sources arepresent and the allowable quantity isthe total available assimilative capacity. Thismethod may be used whena local condition such asriver flow at thepoint ofdischarge is the limitingfactor

.. 3. A segment wide evaluation. This involves allocating the available assimilative capacity within a river segment based on a facility's percent oftotal past discharges. This method wouldbe used when multiple discharges ofthe samepollutantto the same segment and the available assimilative capacity is relatively limited. Thevaluethat is most protective ofwater quality becomesthe facility's allocation that is held in the system for the specific facility and pollutant. Itis importantto note thatthe method used for
· allocation is facility and pollutant specific and different facilities onthe same segment for the

same pollutant can have differentmethods used depending on their individual situations. Discharge amounts are always allocated to all facilities having a historyofdischarging a particularpollutant. This does notmean that effluent limits will be established ina permit.

. Limits are onlyneeded when pastdischarge amounts suggest a reasonable potential to exceed a waterquality based allocation, either on an individual or segment basis. Similarto past practices for single discharge evaluations, the single highesttest value is multipliedby a RP factor and if product is greater than the water quality allowance, an effluent iimit is established. Itis impmtantto remember an allocation is "banking" some assimilative capacity for a facility even if effluent limits are not needed. Evaluations are also done for each tributary segmentwith the sum ofdischarge quantities in tributaries becoming a "poiut source" to the nextmost significant segment. In cases where a facility does not use all ofits assimilative capacity, usually due to a more limiting individual water quality criterion, the tmused quantity isrolled downstream andmade available to other facilities. The system is not static and uses a five-year rolling data window. Overtiine, oldtests drop off and newer ones are added on. These changes causethe allocations and the need for effluent limits to 

### shift overtime to remaiu current withpresentconditions. Theintent is to update a facility's data and relative contribution to a river's total assimilative capacity priorto eachpermit renewal. Manyfacilities are required to do onlyminimal testing to characterizetheir effluents. Titis creates a greater degree ofstatistical uncertainty about the true long-term quantities. Accordiugly, withfewer tests the RP factor 

### will belarger and result in a greaterpossibility of effluent limitsbeing necessary. To avoid this situation, most facilities, especially those with relativelylowdilution factors, are encouraged to conductmore that a minimumnumber oftests. 

### Itis generally to a facility's long-term benefitto have moretests on file since their RP factor will bereduced

..

### Maine Department ofEnvironmental Protection Working Definitions ofTerms Used in the DeTox System.


### Allocation. The amount ofpollutant loading set aside for afacility. Separate amounts are set for each 

### water quality criterion. Each pollutanthaving ahistory ofbeing discharged will receive an allocation, but not all allocations become 

### effluent limits. Allocation may be made in three ways: 

### historicalallocation, individualallocation or

### segmentallocation. Assimilative capacity. The amount ofapollutant thatriver segment can safely accept from point source discharges. It

### is determined forthe most downstream point in ariver segmentusing the

. 

### water quality criterion and river flow. Separate capacities are setfor acute, chronic and human health criteria as applicable for eachpollutant. Calculation ofthis capacity includes factors for 

### reserve and 

### backgroundamounts. 

### Background. Aconcentration ofapollutantthat is assumed to bepresent in areceiving water butnot attributable to discharges. By mle, this is set as arebuttable presumption at I0% ofthe applicable 

### waterquality criterion. Effluent limit. Anumeric limit in a discharge permit specificallyrestricting the amount ofa pollutantthat may be discharged. An effluentlimit is set only when the highest discharge, including an adjustment for 

### reasonablepotential, is greaterthan afacility's water quality based 

### allocation for apollutant. 

### Historical allocation (or

### RP history). One ofthree ways ofdeveloping an 

### allocation. The facility's average history ofdischarges, inpounds at design flow, is multipliedby the appropriate 

### reasonablepotentialfactor. An

### allocation using this method does not become an 

### effluentlimit. Historicaldischargepercentage. For each pollutant, the average discharge concentration for each facility in asegmentis multiplied by the permittedflow (withoutincluding a 

### reasonable potentialfactor). The amounts for all facilities are added together and apercent ofthe total is figured for eachfacility. When afacility has no detectable concentrations, thatpollutantis assmned to be notpresent and itreceives no percentage. 

### Individual allocation. One ofthree ways ofdeveloping an 

### allocation. The facility's single highest discharge on record multiplied by the appropriate 

### reasonablepotentialfactor is compared to a water quality based quantity with an assumption that the facility isthe only point source to thatreceiving water. Ifthe RP-adjusted amountis larger, the water quality amount

·may become an 

### effluentlimit. Less than. A qualification on a laboratory report indicating the concentration ofapollutantwas below a certain concentration. Such aresult is evaluated as being one halfofthe Department's reporting limit in most calculations.Reasonablepotential (RP). A 

### statistical method to determinethe highest amount ofapollutant likelyto be present at any time based onthe available testresults. The method produces a value orRP factor that is multiplied by test results. The method relies on an EPA guidance document, and considers the coefficient ofvariation and the number oftests. Generally, the fewer number oftests, thehigherthe RP factor. Reserve. An

### assumed concentration ofapollutant that set aside to account for non-point source ofapollutant and to allow new discharges ofapollutant. By nile this is set at 15% ofthe applicable water quality criterion. Segmentallocation. 

### One ofthree ways ofdeveloping an allocation. 

### The amountis setby multiplying a facility's historicaldischargepercentagefor 

### a specific pollutant by the assimilative capacity

### for thatpollutant and criterion. Afacility 

### will have different allocation percentages for each pollutant. This amO\mt may become an effluent limit. Tributary. 

### A stream flowing into alarger one. A total pollutant load is set by adding the all facilities allocations 

### on the tributary and treating this totaled amount as a "point source" to the next larger segment. Water quality criteria. 

### Standards for acceptable in-stream or ambientlevels ofpollutants. These are establishedinthe Department's Chapter 584 and are expressed as concentrations in ug!L. There may be separate standards for acute and chronic protection aquatic life and/orhuman health. Each criterionbecomes a separate standard. Different streamflows are used in the calculation ofeach.Maine Depmiment ofEnvironmental Protection General Processing Steps in "DeTox"

I. Pre aration Select Watershed

# ~ Select values for pH,Temp, hardness, Background 

### %, Reserve % Algorithms for some pollutants Waterqualitytables Calculate water quality criteria: Acute, Chronic, Health

II. SegmenfAssimilative Capacity Get facility information: location, stream flows

# ~ Identify lowermost facility

# ~ Get stream flows for Acute, Chronic, Health (!Ql0, 7QIO, HM)
Calculate segment capaciJbypollutant and criterion: Stream flow x critetonx 8.34 =pounds

Set.aside Reserve and Background: Segment capacity x (1- background- reserve)=

### SegmentAssimilative Capacity

Save SegmentAssimilative Capacities 

### by pollutant and critelion

Page I 

# II 

# . I

MaineDepartment ofEnvironmental Protection General Processing Steps in "DeTox"
III. Evaluate HistorybyPollutant Select each facility effluent data foreach facility Data input and edits 

# l
Identify "lessthan" results and assign at Y, ofreporting limit

# ~ Bypasspollutants ifall results are "less than" Average concentratioj and calculatepounds: Ave concentration x license flow x 8.34 =HistoricalAverage
DetenninereasonablepoJntial (RP) using algorithm 

# J Calculate RP adjusted pounds: Historical Average x RP factor=RPHistoricalAllocation

# ~ Save for comparative evaluation
Calculate adjuste)maximum pounds: Highest concentration x RP factor x license flow x 8.34 =RPMaximum Value

IV. Determine FacilityHistoryPercentage 

# f

) Bypollutant, identifyfacilitieS .withHistoricalAverage

# ~ Sum all Historical Averages within segment

# ~ . Byfacility, calculatepercent oftotal: . Facilitypounds 

### I Total pounds=FacilityHistory%

Page2Maine Department ofEnvironmental Protection General Processing Steps in "DeTox" V. SegmentAllocation Bypollutant and criterion, selectSegmentAssimilative Capacity

# ~ Select individual FacilityHistory%

# ~ Determinefacility allocation: Assimilative Capacity x FacilityHistory%=SegmentAllocation 

# J Save for comparative evaluation

VI. IndividualAllocation Select individual facility and dilution factor (DF)

# ~ Selectpollutant and water quality criterion

# ~ By pollutant and criterion, calculateindividual allocations: [DF x 0.75 x criterion]+ [0.25 

### x criterion]=Individual Concentration

# ~ Determine individual allocation: Individual Concentration 

### x license flow x 8.34 =IndividualAllocation

# ~ Savefor comparative evaluation


### VII; Make InitialAllocation 

# I I . . I 

# I I

.. Byfacility, pollutant and criterion, get: IndividualAllocation, SegmentAllocation, RPHistoricalAllocation

# ~ Compare allocation and selectthe smallest 

### ) 

# I I

I Save asFacittyAllocation

Page3

### Maine Department ofEnvironmental Protection General Processing Steps in "DeTox"
VIII. Evaluate Need for Effluent Limits By facility, pollutant and criterion select SegmentAllocation,IndividualAllocation 

### and RPMaximum value 

# ! . If

### RPMaximum value 

### is greaterthan eitherSegmentAllocation 

### orIndividualAllocation, 

### use lesser value as E.fjluentLimit 

# ! . Save E.fjluentLimit 

### for comparison

IX. Reallocation ofAssimilative Cn]lllcity 

### Starting at top ofsegment, get SegmentAllocation, FacilityAllocation 

### and EjjluentLimit

# ~ IfSegmentAllocation 

### equals EjjluentLimit, 

### move to next facility downstream

# ~ Ifnot, subtractFacilityAllocation 

### from SegmentA/location

# ~ Save difference
Select next faciLy downstream

# ~ Figure remaining SegmentAssimilative Capacity 

### at and below facility, less tributaries 

# t Add saved difference to get an adjusted SegmentAssimilative Capacity 

# ! ReallocateSegmentAssimilative Capacity 

### among downstream facilities per step V 

# ! Repeat process for eachfacility downstream in turn )

## ~ I

)



### Page 4

# l 

# I I 

# ATTACHMENT F

# ~ 

# I I 

# I i I 

# l

.. 

# I
\



### i


# I 

# L

I 

# I ISTATE OF MAINE DEPARTMENT OF ENVIRONMENTAL PROTECTION
CHAPTER 530.2(D)(4) CERTIFICATION

PAUL R. LEPAGE PATRICIAW. AIIO GOVERNOR Commissioner MEPDES#

______,FacilityName

_______________ Since the effective date ofyourpermit, have there been; NO YES Describe in comments section I Increases in the number, types, and flows ofindustrial, commercial, ordomestic discharges to the facility that in the judgment ofthe Department may cause the receiving water to become toxic? 

### 0 

### D

2 Changes in the condition or operations ofthe facility that may increase the toxicity ofthe discharge? 

### D D 3 Changes in storm water collection or inflow/infiltration affecting the facility that mayincrease the toxicity ofthe discharge? 

### D D
4 Increases in the type or volume ofhauled wastes acceptedby the facility? 

### D D
COMMENTS:
Name (printed):

_________________________ Signature:

__________________ Date: This document mustbe signed by the permittee OJ' their legal representative. This form maybe used to meet the requirements ofChapter 530.2(D)(4). This Chapterrequires all dischargers having waived or reduced toxic testing to file a statement with the Department describing changes to the waste being contributed to their system as outlined above. As an alternative, the discharger may submit a signed letter containing the same information. Scheduled Toxicity Testing for the next calendar year Test Conducted I'' Quarter 2°0 Quarter 3ro Quarter 4'" Quarter WET Testing D D D D Priority Pollutant Testing D D D D Analytical Chemistry D D D D Other toxic parameters ' D D D D Pleaseplace an "X" in each of the boxes thatapply to whenyou will be conducting any one of the three test types during the nextcalendaryear. 1 This only applies to parameters where testing is required at a rate less frequently than quarterly.

AUGUSTA 17 STATE HOUSE STATION BANGOR PORTLAND PRESQUE ISLE AUGUSTA, MAINE 04333-0017 106 HOGAN ROAD, SUITE 6 312 CANCO ROAD 1235 CENTRAL DRIVE, SKYWAY PARK (207) 287-7688 FAX: (207) 287-7826 BANGOR, MAINE 04401 PORTLAND, MAINE 04103 PRESQUE ISLE, MAINE 04769-2094 RAY BLDG., HOSPITAL ST. (207} 941-4570 FAX: (207) 941-4584 {207) 822-6300 FAX: (207) 822-6303 (207) 764-0477 FAX: (207)760-3143 web site; www.maine.gO\·/dep

# DEP INFORMATION SHEET Appealing a Department Licensing Decision Dated: March 2012 Contact: (207) 287-2811

SUMMARY There are two methods available to an aggrieved person seeking to appeal a licensing decision made by the Department ofEnvironmental Protection's ("DEP") Commissioner:(!) in an administrative process before the Board ofEnvironmental Protection ("Board"); or (2) in ajudicial process before Maine's Superior Court. An aggrieved person seeking review ofa licensing decision over which the Board had originaljurisdiction may seekjudicial review in Maine's Superior Comi. Ajudicial appeal offinal action by the Commissioner orthe Board regarding an application for an expedited wind energy development (35-A M.R.S.A. § 3451( 4)) or a general permit for an offshore wind energy demonstration project (38 M.R.S.A. § 480-HH(l) or a general permit for a tidal energy demonstration project (38 M.R.S.A. § 636-A) must be taken to the Supreme Judicial Court sitting as the Law Court. This INFORMATION SHEET, in conjunction with a review ofthe statutory and regulatory provisions referred to herein, can help a person to understand his or herrights and obligations in filing an administrative orjudicial appeal.
I. ADMINISTRATIVE APPEAt.S TO THE BOARD LEGAL REFEUENCES The laws concerning the DEP's Organization andPowers, 38 M.R.S.A. §§ 341-D(4) & 346, the Maine AdministrativeProcedureAct, 5 M.R.S.A. § II00I, and the DEP'sRules Concerning the Processing of Applications and OtherAdministrativeMatters ("Chapter 2"), 06-096 CMR2 (April !, 2003).
HOW LONG YOUHAVE TO SUBMITAN APPEALTO THE BOARD The Board must receive a written appeal within 30 days ofthe date onwhich the Commissioner's decision was filed with the Board. Appeals filed after 30 calendar days ofthe date on which the Commissioner's decision was filed with the Board will be rejected.
HOW TO SUBMIT AN APPEAl.TO THE BOARD Signed original appeal documents must be sent to: Chair, Board ofEnvironmental Protection, c/o Department ofEnvironmental Protection, 17 State House Station, Augusta, ME 04333-0017; faxes are acceptable for purposes ofmeeting the deadline when followed bythe Board's receipt ofmailed original documents within five (5) working days. Receipt on a particular day must be by 5:00PM at DEP's offices inAugusta; materials received after 5:00PM are not considered received until the following day. The person appealing a licensing decision must also send the DEP's Commissioner a copy ofthe appeal documents and ifthe person appealing is not the applicant in the license proceeding at issue the applicant must also be sent a copy ofthe appeal documents. All ofthe information listed in the nextsection must be submitted at the time the appeal is filed. Only the extraordinary circumstances described at the end ofthat section willjustify evidence not in the DEP's record at the time ofdecision being added to the record for consideration bythe Board as part ofan appeal.
WHATYOURAPPEAL PAPERWOUK MUST CONTAIN Appeal materials must contain the following information at the time submitted: OCF/90-1/r95/r98/r99/r00/r04/r12Appealing aCommissioner's Licensing Decision March 2012 Page2of3 I. AggrievedStatus. The appeal must explain how the person filing the appeal has standing to maintain an appeal. This requires an explanation ofhow the person filing the appeal may suffer a particularized injury as a result ofthe Commissioner's decision. 2. Thefindings, conclusions orconditions objectedto or believed to be in error. Specific references and facts regarding the appellant's issues with the decision must be provided in the notice ofappeal. 3. The basis of the objections or challenge. Ifpossible, specific regulations, statutes or other facts should be referenced. This may include citing omissions ofrelevant requirements, and errors believed to have been made in interpretations, conclusions, and relevant requirements. 4. The remedy sought. This can range from reversal ofthe Commissioner's decision on the license or permit to changes in specific permit conditions. 5. All the matters to be contested. The Board will limit its consideration to those arguments specifically raised in the written notice ofappeal. · ' 6. Request for hearing. The Board will hear presentations on appeals at its regularly scheduled meetings, unless a public hearing on the appeal is requested and granted. A request for public hearing on an appeal must be filed as part ofthe notice ofappeal. 7. New or additional evidence to be offered. The Board may allow new or additional evidence, referred to as supplemental evidence, to be considered by the Board in an appeal only when the evidence is relevant and material and that the person seeking to add information to the record can show due diligence in bringing the evidence to the DEP's attention at the earliest possible time in the licensing process or that the evidence itselfis newly discovered and could not have been presented earlier in the process. Specific requirements for additional evidence are found in Chapter 2. OTHER CONSIDERATIONS IN APPEALING A DECISIONTO THE BOARD I. Be familiar with all relevant material in the DEP record. A license application file is public information, subject to any applicable statutory exceptions, made easily accessible by DEP. Upon request, the DEP will make the material available during normal working hours, provide space to review the file, and provide opportunity for photocopying materials. There is a charge for copies or copying services. 2. Be familiar with the regulations andlaws under which the application wasprocessed, andthe procedural rules governingyourappeal. DEP staffwill provide this information on request and answer questions regarding applicable requirements. 3. Thefiling of an appeal does notoperate as a stay to any decision. Ifa license has been granted and it has been appealed the license normally remains in effect pending the processing ofthe appeal. A license holder may proceed with a project pending the outcome ofan appeal but the license holder runs the risk ofthe decision being reversed or modified as a result ofthe appeal.
WHAT TO EXPECT ONCE YOU FILEA TIMELYAPPEAL WITH THE BOARD The Board will formally acknowledge receipt ofan appeal, including the name ofthe DEP project manager assigned to the specific appeal. The notice ofappeal, any materials accepted by the Board Chair as supplementary evidence, and any materials submitted inresponse to the appeal will be sent to Board members with a recommendation from DEP staff. Persons filing appeals and interested persons are notified in advance ofthe date set for Board consideration ofan appeal or request for public hearing. With or without holding a public hearing, the Board may affirm, amend, or reverse a Commissioner decision or remand the matter to the Commissioner for further proceedings. The Boardwill notifY the appellant, a license holder, and interested persons ofits decision.

OCF t90-1/r/95/r98/r99/r00/r04/r12Appealing aCommissioner's licensing Decision March 2012 Page 3of3 II. JUDICIAL APPEALS Maine law generally allows aggrieved persons to appeal final Commissioner or Board licensing decisions to Maine's Superior Comt, see 38 M.R.S.A. § 346(1); 06-096 CMR 2; 5 M.R.S.A. § 11001; & M.R. Civ. P 80C. A party's appeal must be filed with the Superior Court within 30 days ofreceipt ofnotice ofthe Board's orthe Commissioner's decision. For any other person, an appeal must be filed within 40 days of the date the decision was rendered. Failure to file a timely appeal will result in the Board's or the Commissioner's decision becoming final. An appeal to court ofa license decision regarding an expedited wind energy development, a general permit for anoffshore wind energy demonstration project, or a general permit for a tidal energy demonstration project may only be taken directly to the Maine Supreme Judicial Court. See 38 M.R.S.A. § 346(4). Maine's Administrative Procedure Act, DEP statutes governing a particular matter, and the Maine Rules of Civil Procedure must be consulted for the substantive and procedural details applicable tojudicial appeals.
ADDITIONAL L'IFORMATION Ifyou have questions or need additional information onthe appeal process, for administrative appeals contact the Board's Executive Analyst at (207) 287-2452 orforjudicial appeals contact the coutt clerk's office in which your appeal will be filed. Note: The DEP provides this INFORMATION SHEET for general guidance only; it is not intended fo•· use**--~a~s** _a_legal reference. Maine law governs an appellant's rights.**-----~-~~-**

OCF /90-1/r/95/r98/r99/r00/r04/r12