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Home My WebLink AboutNC0055221_Regional Office E-File Scan Up To 1/19/2021 October 30, 2019 Larry Carver City of Marion PO Drawer 700 Marion, NC 28752 SUBJECT: Compliance Inspection Report Marion WTP NPDES WW Permit No. NC0055221 McDowell County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Marion WTP on 10/23/2019. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in NPDES WW Permit No. NC0055221. The findings and comments noted during this inspection are provided in the enclosed copy of the inspection report entitled "Compliance Inspection Report". The following finding was noted during the inspection:  A high level of solids exists in the sedimentation lagoons, make removal of these a priority. If you should have any questions, please do not hesitate to contact me with the Water Quality Regional Operations Section in the Asheville Regional Office at 828-296-4500 or via email at tim.heim@ncdenr.gov. Sincerely, Tim Heim, P.E., Environmental Engineer Water Quality Regional Operations Section Asheville Regional Office Division of Water Resources, NCDEQ ATTACHMENTS Ec: WQS-ARO Server LF G:\WR\WQ\Mcdowell\Wastewater\Municipal\Marion Water Plant 55221\2019 CEI\20191030_NC0055221_CEI.Docx DocuSign Envelope ID: 2D891DC8-273A-41F9-8421-7EDAF16A12CD DocuSign Envelope ID: 2D891DC8-273A-41F9-8421-7EDAF16A12CD 10/30/2019 10/30/2019 DocuSign Envelope ID: 2D891DC8-273A-41F9-8421-7EDAF16A12CD DocuSign Envelope ID: 2D891DC8-273A-41F9-8421-7EDAF16A12CD North Carolina Department of Environment and Natural Resources Pat McCrory Donald R. van der Vaart Governor Secretary Water Quality Regional Operations – Asheville Regional Office 2090 U.S. Highway 70, Swannanoa, North Carolina 28778 Phone: 828-296-4500 FAX: 828-299-7043 Internet: http://portal.ncdenr.org/web/wq An Equal Opportunity \ Affirmative Action Employer April 23, 2015 Bob Boyette City of Marion PO Drawer 700 Marion, NC 28752 SUBJECT: Compliance Evaluation Inspection Marion WTP Permit No: NC0055221 McDowell County Dear Mr. Boyette: On April 16, 2015, I conducted a Compliance Evaluation Inspection of the wastewater system at the water treatment plant. The facility appeared to be in compliance with permit NC0055221. Please refer to the enclosed inspection report for additional observations and comments. If you or your staff have any questions, please call me at 828-296-4500. Sincerely, Linda Wiggs Environmental Senior Specialist Asheville Regional Office Enc. Inspection report cc: Larry Carver, ORC (e-copy) MSC 1617-Central Files-Basement Asheville Files G:\WR\WQ\McDowell\Wastewater\Municipal\Marion Water Plant 55221\CEI.April2015.Ltr.doc Ptfys+CakCherra VINT P Mpg 49"S tio_. wit! FK Wwr Salkanintammtanottanina • air .Moos '"a. ' wnef:+ _ r-. sI-�J. �r+st iimmoillOaS.r�+.r+.t fyy ref ••C ► C6jfls' rr.C- F.rs-ar eamasllP"Irmss SISWIS �.,a;.y. n••ri d :v.. rw .�' rMtt+•r a C.. 1.11 Wife Am' .........M • CaItD•�i•Gr $.R►r. .r drew 'it .0 .�n•,at. *twat WIC St 4116. _ • rn+s• .r li a 'We Caw (J.'Gi r.�y siss e• w.f•-•-• .re+r s+i^^'`w"'L AM , on ...�. •r' K,o.+ _ or .Gprsvotw+c • Aso tagmataire MS, Cabe* Cirve timpeasea .rr%1tSGM ard{t•Or ate, :spa sat Ka,t ,et.rwt '7K aitwa� cf++' SMMS • infilaili•af cat et `ret; :.sc 4O Try arm SPaanCasit Arai • Let F.*ait, OS: 5 - 4 • oU Rarp.a t ritrint rTRC most sea be An-. :...c *now ones ono tone nionnanint term p .. S.t ..V I F1`WC 0rschar'q" A�+ Fat VO i • ta o/2Ocd6 Cat. ThrsslOat* HP LA5ZRJL: r^ City of Marion WTP Sludge Lagoon Feld Parameter Wornhnt & Flaw C..'A...n• • pH Analysis. w,..rTr... Mmatist, r.4411, %slut suds * s.rSS ads.. . ‘114 Cslttntlon duffer 4.0 * Calibration Butter 10.0 e •e M soaks rA.ldi, an 1* be eMM t 6,1 r11 seise .r to .sweater trio .dr. . ewe Losillilesailltr. 7 bans, l..t^ Wallr..r. Semple Collection Facll /Sam • le Iocatbn Ttaw *if sae* M sraswwf dimity Is rte errs es4 r OP sal., •eh tits .nslyerd ..rld tw recerdnt Celltwnlsn drat check is squired when patrrnonp entry**, et muRlpw sampling locsUons. (U** Minn 7.0) Should be *Mgr, a 0.1 units of tier D4Rr►fs Iris vak.) *Ai pal results In pH units (t.e , e.u.). 'Ad Temp. results in degrees Celclus 0e_,"C). Prams! Tencereturs Sensor Chock Date: pHlTemp.'C Result 'Chock Butter 7.0 10 befit L.cf►OSMtre.• +,;Buffer Check value 6 1 C oafn•r1M Comments Total Residual Chlorine (TRC) Reference Method: Include edltlon e . 9M ZO'" TEN usisisnwas Result Comm.t�ta f frec•ttyisartmte I LOutlon Dolly thick eta►dsrd nee vetwj uct. a Tlrne Standard Analyzed check Sample Collection Time 'Sample Analysts Time ugll. for mg/L I .. 6rp:4) *),C 11010 J CO , 101.5 oi • V sampa S rneeeured directly In the strsem and/or one**, only time •netyted would be recorded. T*C check (psi) standard true vales, _, (aecaptantrs rive : 101 . 277 ) 0¢D (pewdew)1ot044d4n0Nisr: Instrtnnsnt Serial No.: j¢T¢o; Afsruel Ver$Aosuon curie analyzed ors :J Ltc�. 1%. 4N Srn. Lot 0 A2100 Discharge/Flow Depth at Start Feet j 1 lwdsMesreign **,dies,, f+efr:00,400 j,llfeof owed 0*1 IJ/tanetI Depth at - Stop Foot Difference Keen Volume Dlechergodf l Comments MOD (O 06e MOOMof) 015 10:13 ,kk011 1 `;tht'z11t'i / /• 1'i nTCPEITOCH L'nas ✓ . / ram, Se, nit t lioe ` 1, A 1vf ,00"•--',Sri .r'/ /At J. it -ix, de Axse c% rr r 14 '� €. (/11 fthi, N. Ala* t A,r dtf if IS' S//,/ {✓• %X kireyest iiasentif rAffief eat 4414tio Alta kitovig. f/.* % ,/ NMI- 1. frttt t Id, r //, I_ti. f /A, • / jgE'tt /k OATf el r.• • ta o/2Ocd6 e hloct-or I & 4NAly iic4 \tiouAloizit INC. AndINt F�rNoc'e s CAXISUitatAXIS BIOASSAY CHAIN OF CUSTODY RECORD i MMO,1- , r`�\ Ti) County: -1 �..,';. c\\;: \ Contact Person: Address:`I�� - t t 7 lC i].+:, I!�t Signature: 1\ 1�t '-1 ��.� c15-A1'�. NP D ES * : L>C_, `3\ Phone Number: Lab (RAL only) Sample Description see note*? ..A. t01 Samp e Cc Date; Time Started aus 13)13 • for Sample Descfa Riiiingasnee0y : 5gnature} k Repricrussesed by: {Signature ♦ •\ Date.' Time Ended Temp (°C) End Comp. I Grab Smote Type Temp No. of Upon containers Arrival sent (*C) 11111111111111111 111111111111111111 Analysis Required (acute, c`•. bioassay l ,,on please use Effluent, Influent, Upstream, Post Cr Etc. Received by: (SignatUel Received by: (Signature\ DatetTime �� ,S i,5 /f/54% 1 Date/Tir e ta o/2Ocd 5 10:15 • ,�; : t � st�iRmBni Note: Original sentcollectorCopY retained by . __�.. rsani.na 27264 * 336 Ina NFOES No ticA plat Fat Otto, Na 'hystcaliChemtcal VVWTP Log case t* O2acd6 111.111noS fn. a I- a~ms t anise bk. Liallnalle 011. se ram at er as t to lumen* M.r sines ra w �� r e tea► (.�. bear ILO Pratt s ar0ar rul�re sae oars Cillilsobs.'Clp leassiese Zane Sara saws Sat ile somallifbas -•.tea.. ,� . 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V.:W 111/4AIAKtQ 434 tiA\VJ; 1\5 . \ • Sara 4 illialreltronsgois Siss wr-11011111101111111-1.0111111110111111070111a 1101110111111111111111011e rasa, • es ow vs. ill0110101111 TOrtar. -ors ass -••• 4, X fl o/2OcfJE • • -41111•- • • CONFINED SPACE AUTHORIZED PERSONNEL ONLY 1 • • y* al may '-1:4 ~' S 7.44 41/4 «fjx� , .a� r� _T .. 1 ')/ )114 /t• nliklanitt 'fillill 11.0111 • `.10. • -�.�. -, "r.r.- - Y-,. --... 1 .44 Oar /0/QcfJ 60 .• tri . r 1M- • -- NI v 'w`I elala1 Ica o/2OcfJ • . t raw 2 • aiges Ica o/2OcfJ6 w ter= -r . c. • • ec. v. . �..,i , . - .. - .. - ..-. .. _ . ----- • �� _. ...�16�.. .. ;ti•.s^.... .,A.ar " +w7� .. 1st:, <r '+ �-_r :tom. „ :ION let • Blow - -a" Zwassos- Se. allialnerse assiser • • tr•. _ fir.. v s. K+ —as .. ;,� • .arc-' . • tic .y ` 1/41 i r'..' . . 4 2 ii • � r . •I 1 j ♦ • r or A 0� • x /2o1JE EU 441. ape 411.0. 41•••. - �. flaO2a`fiE NCDENR Division of Water Resources Water Sample Collection & Submittal Form Central Laboratory, Water Sciences Section Tag ID •? AC30248 Location Mahon WTP Description: i ' Location Code NC0055221 „ Date Received: (/D a "County:" :i McDowell ' Collector: 1 Lwiggs , Priority-: Water Matrix: ` Location ❑ ❑ Surface ❑ ❑Ground ❑Monitoring Type: , Time Received: `Y� DWR Region: ARO (based on county) , ( DWR Office: 'ARO (or agency name)' ❑Ambient ❑ Routine River/Stream Estuary Stormwater❑ Well Effluent Blank Filter Blank ❑Lake ❑ Canal ❑Water Supply Influent Trip Blank - ' Received By: �Y�! I ' , ± River Basin: 1 CTB - I '4'-� Date:.", '" 1 46. 6/ W i b " i HState Courser Delivery iiii ❑Hand Delivery i Other Compliance Visit ID (optional): 1 Time:-_ i 3Method: ❑ coc ❑ Emergency ❑OA Waste ❑Field ❑ Blank ❑ ❑Solution ❑Other Chlorine De -chlorinated in Field ❑ ❑ • Sample Method: Grab UComposite 1 Temperature on i p . Arrival (°C): i �. � ' ❑ Other Dissolved analysis Enter "DIS" , ❑ Filtered in Field in check -boxes for parameters Sample _ Depth: 1 Collector'sComments: e/ c, r , �r,`,, ��J! f�� /� L.i r t �/ � ' � Microbiology Parameters: , MBAS (surfactants) mg/L Metals Parameters: Tin (Sn) µg/L Acidity, as CaCO3, to pH 4 5/8 3 mg/L Oil and Grease, HEM, Total Recoverable mg/L Aluminum (Al) pg/L Titanium (Ti) µg/L Alkalinity, as CaCO3, to pH 4 5/8 3 mg/L 1 Phenols, Total Recoverable pg/L Antimony (Sb) pg/L Vanadium (V) µg/L BOD Biochemical oxygen Demand, 5-day mg/L I Residue Total (Total Solids) mg/L Arsenic (As) pg/L Zinc (Zn) µg/L cBOD Carbonaceous BOD, 5-day mg/L ' Residue Volatile/Fixed, Total mg/L Barium (Ba) pg/L Coliform Fecal MF /100m1 ' Residue Suspended (Suspended Solids) mg/L Beryllium (Be) pg/L Boron (B), Total µg/L Coliform Total MF /10om1 Residue Volatile/Fixed, Suspended mg/L Cadmium (Cd) µg/L Mercury 1631, low-level ng/L Coliform Tube Fecal /100m1 . TDS - Total Dissolved Solids mg/L Calcium (Ca) mg/L Coliform Tube Total /100m1 Silica mg/L Chromium (Cr), Total pg/L Organics Parameters:!. " Specific Conductance, at 25 °C umhos/cm Sulfide mg/L Cobalt (Co) pg/L X Acid Herbicides TOC - Total Organic Carbon mg/L I Tannin & Lignin mg/L Copper (Cu) pg/L Organochlonne Pesticides Turbidity NTU , Iron (Fe) pg/L Organonitrogen Pesticides Other Parameters: , Lead (Pb) pg/L Organophosphorus Pesticides Wet Chemistry Parameters: pH s u Lithium (Li) pg/L PCBs (polychlorinated biphenyls) X Bromide mg/L ' Hardness, Total as CaCO3 - by titration mg/L Magnesium (Mg) mg/L X Chloride mg/L Manganese (Mn) pg/L X Semi -Volatile Organics (BNAs) X Fluoride mg/L Mercury (Hg) µg/L TPH Diesel Range X Sulfate mg/L Nutrients Parameters: , _ Molybdenum (Mo) pg/L Chlorophyll a pg/L X Ammonia as N (NH3-N) mg/L Nickel (NI) pg/L X Volatile Organics (VOA) Color ADMI c u X Nitrate -Nitrite as N (NO3+NO2-N) mg/L Potassium (K) mg/L MTBE/BTEX Color Platinum Cobalt c u X Total Kjeldahl Nitrogen as N (TKN) mg/L Selenium (Se) pg/L TPH Gasoline Range COD Chemical Oxygen Demand mg/L X Total Phosphorus as P (TP) mg/L Silver (Ag) pg/L Cyanide, Total mg/L X Nitrite as N (NO2-N) mg/L Sodium (Na) mg/L Biological: i' Formaldehyde mg/L X Nitrate as N (NO3-N calculated) mg/L Strontium (Sr) pg/L Phytoplankton / Algae Hexavalent Chromium (Cr6+) mg/L Orthophosphate as P (PO4) mg/L Thallium (TI) pg/L LAB COMMENTS • Field Parameters: Water Temp (°C) pH (s u) Dissolved Oxygen (ppm) Conductivity (µmhos/cm) Salinity (ppt) Revision 1/09/2015 AC30248 North Carolina Division of Water Resources Water Sciences Section Laboratory Results Loc. Descr.: MARION WTP County: MCDOWELL Collector: L WIGGS VisitlD Region: ARO Report To ARO Location ID: NC0055221 River Basin CTB Collect Date: 06/22/2016 Priority COMPLIANCE Emergency Collect Time: 10:30 Sample Matrix: WASTEWATER COC Yes/No Sample Depth Loc. Type: EFFLUENT Final Report Sample ID: AC30248 PO Number # Date Received: 06/23/2016 Time Received: 08_32 Labworks LoginlD TASCENZO1 Delivery Method NC Courier Final Report Date: 7/26/16 Report Print Date: 07/26/2016 If this report is labeled preliminary report, the results have not been validated. Do not use for Regulatory purposes. CAS # Analyte Name Sample temperature at receipt by lab Result/ PQL Qualifier LAB 5.0 Units °C Method Analysis Reference Date Validated by 6/23/16 MSWIFT NH3 as N in liquid 0.02 NUT 0.02 U mg/L as N EPA 350.1 REV 2 6/23/16 CGREEN NO2+NO3 as N in liquid 0.02 0.02 mg/L as N EPA 353.2 REV 2 6/23/16 CGREEN Phosphorus_total as P in liquid 0.02 0.02 U mg/L as P EPA 365.1 REV 2 6/23/16 CGREEN Total Kjeldahl N as N in liquid 0.2 0.20 U mg/L as N EPA 351.2 REV 2 6/28/16 CGREEN WET Bromide 0.4 0.4 U mg/L EPA 300.0 rev2.1 6/23/16 CGREEN Chloride 1.0 3.9 mg/L EPA300.0 rev2.1 6/23/16 CGREEN Fluoride 0.4 0.4 U mg/L EPA 300.0 rev2.1 6/23/16 CGREEN Sulfate 2.0 14 mg/L EPA300.0 rev2.1 6/23/16 CGREEN 93-76-5 2,4,5-T PES 0.18 Not detected ug/L EPA 615 7/13/16 CJOHNSON 93-72-1 2,4,5-TP (Silvex) 0.18 Not detected ug/L EPA 615 7/13/16 CJOHNSON 94-75-7 2,4-D 0.45 Not detected ug/L EPA 615 7/13/16 CJOHNSON 94-82-6 2,4-DB 1.35 Not detected ug/L EPA 615 7/13/16 CJOHNSON 51-36-5 3,5-Dichlorobenzoic Acid 0.18 Not detected ug/L EPA 615 7/13/16 CJOHNSON 100-02-7 4-Nitrophenol (Pest) 0.24 Not detected J2 ug/L EPA 615 7/13/16 CJOHNSON 50594-66-6 Acifluorfen (Blazer) 0.33 Not detected ug/L EPA615 7/13/16 CJOHNSON 25057-89-0 Bentazon 0.42 Not detected ug/L EPA 615 7/13/16 CJOHNSON 1918-00-9 Dicamba 0.15 Not detected ug/L EPA 615 7/13/16 CJOHNSON 120-36-5 Dichlorprop 0.54 Not detected ug/L EPA 615 7/13/16 CJOHNSON 88-85-7 Dinoseb 0.63 Not detected J2 ug/L EPA 615 7/13/16 CJOHNSON 87-86-5 Pentachlorophenol (PCP) 0.09 Not detected ug/L EPA 615 7/13/16 CJOHNSON 83-32-9 Acenaphthene SEM Semivolatile Organics (BNAs) in liquid 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 208-96-8 Acenaphthylene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 62-53-3 Aniline 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 120-12-7 Anthracene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 56-55-3 Benzo(a)anthracene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 50-32-8 Benzo(a)pyrene 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 205-99-2 Benzo(b)fluoranthene 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 191-24-2 Benzo(g,h,i)perylene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 1 of 6 NC /WR, Laboratory Section Resu[ts/Sample Comments/Qualifier Definitions Sample ID: AC30248 CAS # 207-08-9 Analyte Name Benzo(k)fluoranthene PQL Result/ Qualifier 30 Not detected Units pg/L Method Reference EPA625/8270D Analysis Date Validated by 6/29/16 CJOHNSON 65-85-0 Benzoic acid 50 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 100-51-6 Benzyl alcohol 30 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 111-91-1 Bis(2-chloroethoxy)methane 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 111-44-4 Bis(2-chloroethyl)ether 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 39638-32-9 Bis(2-chloroisopropyl)ether 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 117-81-7 Bis(2-ethylhexyl)phthalate 30 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 101-55-3 Bromophenyl phenyl ether, 4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 85-68-7 Butylbenzyl phthalate 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 59-50-7 Chloro-3-methyl phenol, 4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 106-47-8 Chloroaniline, 4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 91-58-7 Chloronaphthalene, 2- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 95-57-8 Chlorophenol, 2- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 7005-72-3 Chlorophenyl phenyl ether, 4- 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 218-01-9 Chrysene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 53-70-3 Dibenzo(a,h)anthracene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 132-64-9 Dibenzofuran 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 95-50-1 Dichlorobenzene, 1,2- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 541-73-1 Dichlorobenzene, 1,3 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 106-46-7 Dichlorobenzene, 1,4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 91-94-1 Dichlorobenzidine, 3,3'- 30 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 120-83-2 Dichlorophenol, 2,4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 84-66-2 Diethyl phthalate 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 131-11-3 Dimethyl phthalate 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 105-67-9 Dimethylphenol, 2,4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 84-74-2 Di-n-butyl phthalate 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 534-52-1 Dinitro-2-methyl phenol, 4,6- 50 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 51-28-5 Dinitrophenol, 2,4- 50 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 121-14-2 Dinitrotoluene, 2,4- 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 606-20-2 Dinitrotoluene, 2,6- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 117-84-0 Di-n-octyl phthalate 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 206-44-0 Fluoranthene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 86-73-7 Fluorene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 118-74-1 Hexachlorobenzene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 87-68-3 Hexachlorobutadiene(SV) 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 77-47-4 Hexachlorocyclopentadiene 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 67-72-1 Hexachloroethane 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 193-39-5 Indeno(1,2,3-cd)pyrene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 78-59-1 Isophorone 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 91-57-6 Methylnaphthalene, 2- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 95-48-7 Methylphenol, 2- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 106-44-5 Methylphenol, 4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 91-20-3 Naphthalene(SV) 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 2 of 6 NC /WR. Laboratory Section Resu[ts/Sample Comments/Qualifier Definitions Sample ID: AC30248 CAS # Analyte Name 88-74-4 Nitroaniline, 2- PQL Result/ Qualifier 10 Not detected Units pg/L Method Reference EPA625/8270D Analysis Date Validated by 6/29/16 CJOHNSON 99-09-2 Nitroaniline, 3- 50 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 100-01-6 Nitroaniline, 4- 50 Not detected J2 pg/L EPA625/8270D 6/29/16 CJOHNSON 98-95-3 Nitrobenzene 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 88-75-5 Nitrophenol, 2- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 100-02-7 Nitrophenol, 4- 50 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 621-64-7 N-nitrosodi-n-propylamine 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 86-30-6 N-nitrosodiphenylamine 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 87-86-5 Pentachlorophenol 30 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 85-01-8 Phenanthrene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 108-95-2 Phenol 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 129-00-0 Pyrene 20 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 120-82-1 Trichlorobenzene, 1,2,4- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 95-95-4 Trichlorophenol, 2,4,5- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 88-06-2 Trichlorophenol, 2,4,6- 10 Not detected pg/L EPA625/8270D 6/29/16 CJOHNSON 106-93-4 (EDB)1,2-Dibromoethane VOL Volatile Organics in liquid 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 630-20-6 1,1,1,2-Tetrachloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 71-55-6 1,1,1-Trichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 79-34-5 1,1,2,2-Tetrachloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 79-00-5 1,1,2-Trichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-34-3 1,1-Dichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-35-4 1,1-Dichloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 563-58-6 1,1-Dichloropropene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 87-61-6 1,2,3-Trichlorobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 96-18-4 1,2,3-Trichloropropane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 120-82-1 1,2,4-Trichlorobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-63-6 1,2,4-Trimethylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 96-12-8 1,2-Dibromo-3-Chloropropane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 107-06-2 1,2-Dichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 78-87-5 1,2-Dichloropropane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-67-8 1,3,5-Trimethylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 142-28-9 1,3-Dichloropropane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 594-20-7 2,2-Dichloropropane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-49-8 2-Chlorotoluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 106-43-4 4-Chlorotoluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 71-43-2 Benzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-86-1 Bromobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 74-97-5 Bromochloromethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-27-4 Bromodichloromethane 1.0 1.4 pg/L EPA624/8260C 6/23/16 CJOHNSON 75-25-2 Bromoform 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 74-83-9 Bromomethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 3 of 6 NC /WR. Laboratory Section Resu[ts/Sample Comments/Qualifier Definitions Sample ID: AC30248 CAS # Analyte Name 56-23-5 Carbon Tetrachloride PQL 1.0 Result/ Qualifier Not detected Units pg/L Method Reference EPA624/8260C Analysis Date Validated by 6/23/16 CJOHNSON 108-90-7 Chlorobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-00-3 Chloroethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 67-66-3 Chloroform 1.0 11 pg/L EPA624/8260C 6/23/16 CJOHNSON 74-87-3 Chloromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 156-59-2 cis-1,2-Dichloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 10061-01-5 cis-1,3-Dichloropropene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 124-48-1 Dibromochloromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 74-95-3 Dibromomethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-71-8 Dichlorodifluoromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 100-41-4 Ethylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 87-68-3 Hexachlorobutadiene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 98-82-8 Isopropylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-38-3 m,p-Xylene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 541-73-1 m-Dichlorobenzene (1,3) 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 1634-04-4 Methyl Tert-Butyl Ether 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-09-2 Methylene Chloride 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 91-20-3 Naphthalene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 104-51-8 n-Butylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 103-65-1 n-Propylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-50-1 o-Dichlorobenzene (1,2) 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-47-6 o-Xylene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 106-46-7 p-Dichlorobenzene (1,4) 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 99-87-6 p-Isopropyltoluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 135-98-8 sec-Butylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 100-42-5 Styrene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 98-06-6 tert-Butylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 127-18-4 Tetrachloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-88-3 Toluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 156-60-5 trans-1,2-Dichloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 10061-02-6 trans-1,3-Dichloropropene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 79-01-6 Trichloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-69-4 Trichlorofluoromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-01-4 Vinyl Chloride 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 4 of 6 NC DWR, Laboratory Section Resu[ts/Sample Comments/Qualifier Definitions Sample ID: AC30248 CAS # Analyte Name PQL Result/ Qualifier Units Method Reference Analysis Date Validated by Sample Comments SEM:SV-J2-estimated- 1 analyte failed < LCL in the CV2. PES:AH-J2-estimated- 1 analyte failed curve fit criteria. PES:AH-J2-estimated- 1 analyte failed <LCL in MS/MSD. NCDEQ-WSS-Chemistry Lab Data Qualifiers Al The reported value is an average, where at least one result is qualified with a "U". The PQL is used for the qualified result(S) to cal B1 Coliform-Countable membranes with less than 20 colonies. Reported value is estimated or is a total of the counts on all filters repor B2 Coliform-Counts from all filters were zero. The value reported is based on the number of colonies per 100 ml that would have been B3 Coliform-Countable membranes with more than 60 or 80 colonies. The value reported is calculated using the count from the smalle. B4 Coliform-Filters have counts of both >60 or 80 and <20. Reported value is estimated or is a total of the counts on all filters reported B5 Coliform-Too many colonies were present; too numerous to count (TNTC). TNTC is generally defined as >150 colonies. B6 Coliform-Estimated Value. Blank contamination evident. B7 Coliform-Many non-coliform or non-enterococcus colonies or interfering non-coliform or non-enterococcus growth present. In this cc BB1 MPN-No wells or tubes gave a positive reaction. Value based upon the appropriate MPN Index and reported as a less than "<" valu BB2 MPN-All wells or tubes gave positive reactions. Value based upon the MPN Index and reported as a greater than ">" value. C Total residual chlorine was present in sample upon receipt in the laboratory; value is estimated. G1 BOD-The dissolved oxygen (DO) depletion of the dilution water blank exceeded 0.2 mg/L. G2 BOD-The bacterial seed controls did not meet the requirement of a DO depletion of at least 2.0 mg/L and/or a DO residual of at lea; G3 BOD-No sample dilution met the requirement of a DO depletion of at least 2.0 mg/L and/or a DO residual of at least 1.0 mg/L. G4 BOD-Evidence of toxicity. This is generally characterized by a significant increase in the BOD value as the sample concentration de G5 BOD-The glucose/ glutamic acid standard exceeded the range of 198 ± 30.5 mg/L. G6 BOD-The calculated seed correction exceeded the range of 0.6 to 1.0 mg/L. G7 BOD-Less than 1 mg/L DO remained for all dilutions set. The reported value is an estimated greater than value and is calculated foi G8 BOD-Oxygen usage is less than 2 mg/L for all dilutions set. The reported value is an estimated less than value and is calculated for G9 BOD-The DO depletion of the dilution water blank produced a negative value. J1 Surrogate recovery limits have been exceeded. J2 The reported value failed to meet the established quality control criteria for either precision or accuracy. J3 The sample matrix interfered with the ability to make any accurate determination. J4 The data is questionable because of improper laboratory or field protocols (e.g., composite sample was collected instead of grab, p J5 Temperature limits exceeded (samples frozen or >6°C) during transport or not verifiable (e.g., no temperature blank provided): non- J6 The laboratory analysis was from an unpreserved or improperly chemically preserved sample. The data may not be accurate. J7 This qualifier is used to identify analyte concentration exceeding the upper calibration range of the analytical instrument/method. Th J8 Temperature limits exceeded (samples frozen or >6°C) during storage, the data may not be accurate. J9 The reported value is determined by a one -point estimation rather than against a regression equation. The estimated concentration J10 Unidentified peak; estimated value. J11 The reported value is determined by a one -point estimation rather than against a regression equation. The estimated concentration J12 The calibration verification did not meet the calibration acceptance criterion for field parameters. M Sample and duplicate results are "out of control". The sample is non -homogenous (e.g., VOA soil). The reported value is the lower N1 Presumptive evidence and estimated value. The component has been tentatively identified base on mass spectral library. N2 There is an indication that the analyte is present, but quality control requirements for confirmation were not met (i.e., presence of N3 This code shall be used if the level is too low to permit accurate quantification, but the estimated concentration is less than the labo N4 This code shall be used if the level is too low to permit accurate quantification, but the estimated concentration is less than the labo N5 The component has been tentatively identified based on a retention time standard. Q1 Holding time exceeded prior to receipt by lab. WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 5 of 6 NC DWR. Laboratory Section Resu[ts/Sample Comments/Qualifier Definitions Sample ID: AC30248 CAS # Analyte Name PQL Result/ Qualifier Units Method Reference Analysis Date Validated by Q2 Holding time exceeded following receipt by lab. P Elevated PQL" due to matrix interference and/or sample dilution. S Not enough sample provided to prepare and/or analyze a method -required matrix spike (MS) and/or matrix spike duplicate (MSD). U Indicates that the analyte was analyzed for but not detected above the reported practical quantitation limit". The number value repo X1 Sample not screened for this compound. X2 Sampled, but analysis lost or not performed -field error. X3 Sampled, but analysis lost or not performed -lab error. ✓ Indicates the analyte was detected in both the sample and the associated method blank. Note: The value in the blank shall not be s Y Elevated PQL* due to insufficient sample size. Z1 Inability to analyze the sample. Z2 Questions concerning data reliability. WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 6 of 6 Permit Facility Month Year Parameter UoM Value Cell Type NC0055221 City of Marion - 9 2011 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 10 2011 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 11 2011 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 12 2011 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 1 2012 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 2 2012 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 3 2012 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 12 2012 50050 - Flow, mgd 0.28 CAMONAVG NC0055221 City of Marion - 3 2013 50050 - Flow, mgd 0.373333 CAMONAVG NC0055221 City of Marion - 5 2013 50050 - Flow, mgd 0.3 CAMONAVG NC0055221 City of Marion - 8 2013 50050 - Flow, mgd 0.24 CAMONAVG NC0055221 City of Marion - 10 2013 50050 - Flow, mgd 0.24 CAMONAVG NC0055221 City of Marion - 12 2013 50050 - Flow, mgd 0.26 CAMONAVG NC0055221 City of Marion - 1 2014 50050 - Flow, mgd 0.24 CAMONAVG NC0055221 City of Marion - 2 2014 50050 - Flow, mgd 0.24 CAMONAVG NC0055221 City of Marion - 3 2014 50050 - Flow, mgd 0.24 CAMONAVG NC0055221 City of Marion - 7 2014 50050 - Flow, mgd 0.24 CAMONAVG average 0.271 maximum, monthly average 0.373 for Sept 2011 to Aug 2014 (36 months) EPA United States Environmental Protection Agency Washington, D.C. 20460 Water Compliance Inspection Report Form Approved. OMB No. 2040-0057 Approval expires 8-31-98 Section A: National Data System Coding (i.e., PCS) Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type 1 N 52 NC0055221 15/04/16 C S31112171819 20 21 66 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- N67707172 73 74 75 80 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Marion WTP Greenlee Rd NCSR 1214 Marion NC 28752 Entry Time/Date Permit Effective Date Exit Time/Date Permit Expiration Date 10:00AM 15/04/16 15/03/01 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Other Facility Data 11:30AM 15/04/16 19/12/31 Name, Address of Responsible Official/Title/Phone and Fax Number Larry Carver,PO Drawer 700 Marion NC 28752//828-652-2428/8286521983 Contacted Yes Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Records/Reports Sludge Handling Disposal Facility Site Review Effluent/Receiving Waters Laboratory Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s)Agency/Office/Phone and Fax Numbers Date Linda S Wiggs ARO WQ//828-296-4500 Ext.4653/ Timothy H Heim ARO WQ//828-296-4665/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page#1 NPDES yr/mo/day 15/04/16 Inspection Type C3111218 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Present during the inspection were Tim Heim, Larry Carver and Ben Worley. A new permit was recently issued. The ORC is considering changing to the general permit in the future. The inspectors observed a backwash take place. Staff plates have been installed to assist personnel with discharge measurements. Personnel are decanting approximately 8” (~40,000 GPD). The City has a schedule to clean out lagoons and it is expected the lagoons will be cleaned out this year. According to the ORC, the last time the lagoons were cleaned was 2013. Southern Soil Builder will be cleaning the lagoons this year. A cursory check of the lagoon berms did not indicate any problems. There were some weeds and woody growth at the effluent pipe. Staff indicated they sample from the lagoon before it flows into the effluent pipe. The backup power system is scheduled to get a new auto transfer switch. A new ORC designation form has been submitted. NC0055221 17 (Cont.) Page#2 Permit:NC0055221 Inspection Date:04/16/2015 Owner - Facility: Inspection Type: Marion WTP Compliance Evaluation Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge Judge, and other that are applicable? pH, TRC.Comment: Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new application? Is the facility as described in the permit? # Are there any special conditions for the permit? Is access to the plant site restricted to the general public? Is the inspector granted access to all areas for inspection? A new permit was issued on January 20, 2015.Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? There is not a flow meter. Staff plates have been installed at both lagoons to assist personnel with discharge measurements. Comment: Lagoons Yes No NA NE Type of lagoons? # Number of lagoons in operation at time of visit?2 Are lagoons operated in? # Is a re-circulation line present? Is lagoon free of excessive floating materials? # Are baffles between ponds or effluent baffles adjustable? Are dike slopes clear of woody vegetation? Are weeds controlled around the edge of the lagoon? Are dikes free of seepage? Are dikes free of erosion? Are dikes free of burrowing animals? Page#3 Permit:NC0055221 Inspection Date:04/16/2015 Owner - Facility: Inspection Type: Marion WTP Compliance Evaluation Lagoons Yes No NA NE # Has the sludge blanket in the lagoon (s) been measured periodically in multiple locations? # If excessive algae is present, has barley straw been used to help control the growth? Is the lagoon surface free of weeds? Is the lagoon free of short circuiting? The City works on a schedule to clean out lagoons and it is expected the lagoons will be cleaned out this year. A cursory check of the lagoon berms did not indicate any problems. Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? There were some weeds and woody growth at the effluent pipe. Sampling takes place in the lagoon just before the water flows into the effluent pipe. Comment: Page#4 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION COUNTY OF MCDOWELL IN THE MATTER OF ) NORTH CAROLINA ) NPDES PERMIT NC0031879 ) HELD BY THE CITY OF MARION ) COMPLIANCE AGREEMENT File Number C14-001, Ad I Pursuant to provisions of North Carolina General Statute § 143-215.3(a)(6), this Amendment to a Compliance Agreement is entered into by the City of Marion herein referred to as the City, and the North Carolina Environmental Management Commission an agency of the State of North Carolina created by N.C. General Statute § 143B-282, and hereinafter referred to as the Commission: 1. The City and the Commission hereby agree to the following findings: (a.) The City holds North Carolina NPDES permit NC0031879 for operation of the Corpening Creek wastewater treatment plant (WWTP) and for making an outlet therefrom for the discharge of treated wastewater to Corpening Creek, Class C waters of this State in the Catawba River Basin. (b.) Effluent limits included as terms of NPDES permit NC0031879 have been established as those concentrations and/or loadings of pollutants in that may be discharged into the receiving stream without causing applicable water quality standards to be contravened. (c.) The Corpening Creek WWTP has been noncompliant with the effluent limits contained in NPDES permit NC0031879 since January 2013 in the manner and to the extent described in Attachment A to this Amendment. (d.) Effluent limit violations are often associated with wet weather events and large volumes of extraneous flow resulting from inflow and infiltration (I&I) within the City's collection system. Surge flow due to I&I leads to washout of solids from the WWTP and creates conditions not conducive for the efficient performance of treatment organisms. (e.) The City historically has recognized issues associated with I&I and its management within the collection system The City completed a targeted I&I removal project in 2009. (£) The City has renewed investigations of its collection system to identify sources of I&I, and is repairing minor and accessible sources in place as they are identified. (g.) On March 20 2014, (revised April 2, 2014) the City submitted a corrective action plan for returning the facility to consistent compliance with the terms of the NPDES permit. (h) On May 8, 2014, the City and the Commission entered into Compliance Agreement CA14- 001 as a framework and means for the City to address issues associated with I&I in the collection system and related effluent limit violations. City of Marion Compliance Agreement C14-001, Ad I NC0031879 p 2 (i.) To date, the City has satisfied the terms of CA14-001, identifying and eliminating sources of I&I in the collection system, and significantly reducing the number of effluent limit violations occurring at the WWTP However, inspections and testing performed to date have indicated additional work will be required in order to fully address issues associated with the City's collection system. 2. Based upon the above findings, the City and the Commission agree to this Compliance Agreement Amendment implementing the following schedule [based upon the plan of action described in 1.(g.) above, as modified per the terms of CA14-001]: (a.) Continue testing (smoke testing, dye testing, video) portions of the collection system and document results of testing. Remove sources of I&I in place where possible. (b.) Continue to conduct flow studies within the collection system. (c.) Continue with the evaluation and categorization of testing results. (d.) Submit an updated/detailed plan of action to the Asheville Regional Office and the Central Office by October 31, 2015. The plan should be based upon the results of studies conducted and information acquired since the execution of CA14-001, and shall consist of two parts: (1.) Collection System. The plan should provide details regarding: • the scope and complexity of repairs to be made • prioritization given to particular projects • whether the City will perform its own repairs or contract for service. Cost projections should also be provided, as well as the source(s) of funding for the repairs. (2.) Wastewater Treatment Plant. The plan should include an overview of existing treatment units, their operation and their current efficiency. Discussions should be provided regarding the potential for gaining improved performance from existing treatment units and any need for upgraded facilities. (e.) Secure permits for any permitted activities associated with the project in an expeditious fashion as necessary, but by no later than December 31, 2015. (£) Begin construction of major and/or permitted projects by January 15, 2016. (g.) Continue to provide progress reports to the Asheville Regional Office on a monthly basis, documenting activities performed during the preceding month and submitted by the 10th day of the month. (h.) Provide a final report that summarizes activities conducted per the terms of the CA14-001 and this Amendment, including estimated flow reductions, by April 30, 2016. (i.) Return to consistent compliance or enter into a Special Order by Consent no later than July 31, 2016. "Consistent compliance" as stated above is defined as being compliant with all terms and conditions of NPDES permit NC0031879, as primarily evidenced by data submitted on Discharge Monitoring Reports (DMRs), for the months April 2016 through June 2016. City of Marion Compliance Agreement C14-001, Ad I NC0031879 p3 3. Nothing in this Agreement relieves the City of its duty to abide by the terms of NPDES permit NC003 1879. Noncompliance with the terms of the NPDES permit may subject the City to the assessment of additional civil penalties during the time this Agreement is in effect. However, the Division will use discretion in its consideration of civil penalty assessments for violations of permit limits associated with wet weather events that occur during the life of the Agreement. 4. Failure to comply with the terms of this Agreement may subject the City to the assessment of additional civil penalties pursuant to Part II, Section B (2.) (the "Duty to Mitigate" condition) of NPDES permit NC003 1879. 5. Requests, actions and or reports required by the terms of paragraph 2 above shall be deemed overdue if they are not made, completed or submitted by the dates specified. The burden for providing sufficient documentation of the satisfaction of the terms of this Agreement is held entirely by the City. 6. Because this is an Agreement between the Commission and the City, neither party will file a petition for a contested case or for judicial review concerning its terms. 7. The City may request an extension/modification to this Agreement. Such request must be made in writing to the Division of Water Resouices' Asheville Regional Office. The request must include reasons for the extension/modification and state when compliance with the NPDES permit will be achieved. Any extension/modification must be approved in writing by the Director of the Division of Water Resources or his designee in order to be effective. 8. This Agreement shall expire August 31, 2016. For The City of Marion t Boyette anager ib6b Date S/22/2 Lc For the North Carolina Environmental Management Commission ey O. Poupart Section Chief Water Quality Permitting Section North Carolina Division of Water Resources for the Chair of the Commission Attachment A a a Q r- --- o co 4 2 M 0 V o c cU 0 acZ i E QE m o 0) 0 d C 0 ❑ • (a ol2Z E o >, 0 U Violation Type % Over Limit a a) 0 o 0al E 0 a) E m ca a 0) E C O 2 0 (1) 0 0 CO CA C3) CO Q < Q Q >, > a) 0 a) 0 a) a) a) a) a) a) 0) co a) O CO 0) O 0) a) N El (` N (`a N N (a Y Y a) warY o C 0 0 0 CD) rn O CO MCC) O N r- r- 10 U7 M co c co ct) 0 0 0 2 I� o o co (.00 c0 o o 4 CO O O O O d CA N N CO a) 0 CO CON M ct r N O co r O O = E E E E E E E E E E E E E E E E E r. co 6Od" r co• M M O) Lf) � d' 6M) O t- O c;6) co °) o t Ln r LO co .Oa. r- a a O 0 a) U 0 U • (a (a CC CC z° Z° z° E E E � 7 7 E E E 'c c c >' >, >, ro Fs ill ❑ ❑ ❑ (f) o r r- r r 0 � 0 0 EE E EEEE rr CO d' 'ch L() N CO r CO LO co o r (O to 0) CO r �t N co in W co CO CO O O O o O N N rY O N N N 'c)' 0 0 0 N • N t O O O N N N cY O V� N CO M r OM V d d c' • � OM `4. d' r- CO CO 6 4 cc 4 rLon - c) r Cr) M CO M CO Cr) r- r- r- r r- r N R CO CO r- N N M O r- N 0 0 CO CO 0 0 co 0 c 0 O a 0 0 a 0 c = 0 co o. 0 To Fo- o y a 0 c 0 rn a 0 z eL ca 'c w o To E Q a 0 CO a 0 a c 0 0 0 0) <�o I° M CO 0 CO O 0 O a) a) a) t 0 0 o a Z z z as co m E E E ro QQQFo- M Cr) M CO CO M r- r- r- r- r- r 0 O 0 0 0 O N N N N N rN N CO CO 11' O O 0 0 O O co 0 O Cr) er LO 0 ce) 10 0 CO LC) O CO r LO O N U N a a a 0 O O CCCC 0 a) 0 0 CO CO CA 0) 0) CA 0 0 a) 0 0 0 0 a 0 Z Z Z Z 0 0 (a (a (3 ca vc, U)) 0i 0 0 0 o E E E E 0 0s o < < < < Z° CO CO CO M r r- r- r O O O O (V N N N U7 LO LO L() O 0 0 0 CO CO r r N LO LO O 0 CO 0 CO 0 C0 O co® 0 0 rn cow caw z z z (a m co c c c E E E Q a Q M CO r 0 0 0 0 M Cr) O (0 c0 0 0 M 10 0 Fecal Coliform 0 0 M M O 0 CO CO 0 0 a CCCC 0 0 a) a) rn o rn 0000 z Z Z z as as (a (a 0000 EEEEEEE a a¢¢ c 0 0 a 0 0) 0 Q UJ c 'it 0 CO fa 2 Z E o O >, U ti 0 Violation Type % Over Limit 0 0 4 N c E J a> rn rn rn E rn a) rn a> o> E E a> a> CD O) ca ca m r ca ca ca m ca c ca ca ca ca L L L L L L L L L L L L a> a) a> _E a) a) a) a) E E a) m a) Q Q Q Q Q Q Q Q Q N Q Q Q Q >, >, >, >, 2 >, A >, a 2 2 >, >, f Y f Y , Y Y Y Y f >, >, Y Y Y Y c � c � — a> m a) a> c a) a) a) a> O O O a) (a a) a) N (I) CO CO CO CO N r- r- LC) r- r 0) N O CO CO CO 0 0) r 0) p N N r- CO O W co M M r O O O rnCD Q Q >, >, a) (1) coo vt O O O CO • rn o0 d CD c rn rn c O CT c O c CD O) p) Cn c CO O> C) CD p) CA c E E E E E E r E E E E E r= E E E E E c E c O (NI co M N N O p. COO`Cr CO N O O O N Ccp O CO M • 00 M CO M 53 O LC) O 5 O CA Lo CO N.: CO OCO r N N O O O O O LriN N N d O CDN N N N d in 0 tC) It en dtri N V d .4r- N N d' 4 4 r: • CO CO CO CO CO CO q'tr r It V It It r- r- r- r- r r r- r LO N r 0 0 O N CD r � N r- O 0 O O N O [` r- O r- CO M CO CO O r- r- r- CO O O O r- r- r- LC) LO LC) r- r- r- r- r- r- O O O O O U O N ac) aa c> c> °> co cip 0 oc O ) a) 0 a) 2 2 2 (Ni v-a :«' = .� c c a) a) ca ca Ca CI CD cn E E E c 0 0 Q Q Q m H I-- M CO CO CO r- r- r- r- r t -i -t O O O r— r r r- r Total Residual Chlorine v 0 U 13 a) -a c a) a co RE 0 1- cc a) aa)) N aa)) c c c c 0 0 0 0 ZZ71-1 Z .as as ca asc c c c EEEE000 EEEE <aQ< M 'i d 'V 'T d' ZED r- r- rO O r- O O O O CV N CV CV N N r 't LO Ln LC) r- 0 0 0 0 0 Total Residual Chlorine d' 'V' t LO LC) LC) r r- r r r- r r t r cO O— �! r. CO O O CO f` r N cM r- CD CD (D r r CO CO CO CO r- r- CO O O O O O O O cccc aa) aa) aa) aa) c c c c 0000 Z ZZZ CO cu ca RI EEEE0000 a ¢ Q Q v 0 c v) a) -p O) N o m -o Z 72 a) as RI CO 0 U U) E 0 0 a 15 I- O O O O (V N CV N CV co co (0 CO (0 O O O O O sor its. e+`\ \\A} CIS` ceczegic Ckre Or4,14. \JeXiic Q01a4t: 1-5 Orty Forw1/40 Ls, Dot t4(D44t ixictio Sao AI7s4 Water Resources H Environmental Quality March 27, 2017 Mr. Larry Carver, WTP Superintendent City of Marion P.O. Box 700 Marion, NC 28752 Subject: Permit Flow Monitoring Requirements for WTP >50,000 and Continuous Flow Totalizing Devices NPDES Application NC0055221 Marion Water Treatment Plant (WTP) Buncombe County Dear Mr. Carver: ROY COOPER Governor MICHAEL S. REGAN Secretary S. JAY ZIMMERMAN Director In accordance with permit NC0055221, the City of Marion is required to install a continuous flow meter 18 months from the permit effective date of March 1, 2015. Therefore, continuous flow recording was required by September 1, 2016. In accordance with 15A NCAC 02B .0505 (b)(1), all water pollution control facilities shall install, operate, and maintain continuous flow measuring devices or totalizing devices. Therefore, continuous flow measurement can include totalizing devices. Additionally, the above rule and permit condition Part II Section D. (3.), requires the following for continuous recording devices or totalizing devices: Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. The Director shall approve the flow measurement device and monitoring location prior to installation. On -site calibration would be the preferred method, but it is our understanding that totalizing devices may have to be shipped to the manufacture for calibration. Please note that General Permit Part II, Section A. gives exceptions to when continuous flow measurement can be interrupted: Continuous flow measurement Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance activities on the flow device. — Nothing Compares:. State of North Carolina I Environmental Quality 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 919-707-9000 Mr. Carver March 27, 2017 Page 2 of 2 Removal of a totalizing devices for calibration is an infrequent maintenance activity. During such time, flow monitoring may be an estimate or instantaneous. For instantaneous flow monitoring, the duration of the discharge must be reported on the DMR in addition to the total flow. This can be reported in the comments section of eDMR. The removal of a totalizing device for calibration must also be reported in the eDMR comments section. If you have any questions about this letter or your permit, please contact Derek Denard at 919-807-6307 or via e-mail at derek.denard@ncdenr.gov. S. Jay Zimmerman, P.G., Director Division of Water Resources he: Central Files NPDES Program Files ARO Files Permit No. NCG590000 Page 1 of 26 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER RESOURCES GENERAL PERMIT NO. NCG590000- Water Treatment Plant Dischargers TO DISCHARGE BACKWASH WASTEWATERS FROM GREENSAND AND CONVENTIONAL TYPE WATER TREATMENT FACILITIES. NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provisions of North Carolina General Statute 143 -215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, this permit is hereby issued to all owners or operators, hereafter permittees, which are covered by this permit as evidenced by receipt of a Certificate of Coverage from the Environmental Management Commission to allow the discharge of treated wastewaters from iron and manganese removal processes and similar wastewaters; and water purification facilities with filter backwash, sedimentation basin washdown, and decant from water treatment in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, and III hereof. This permit shall become effective August 1, 2014. This permit shall expire at midnight on July 31, 2019. Signed this day August 1, 2014 Original Signed by Jeff Poupart for Thomas A. Reeder, Director Division of Water Resources By Authority of the Environmental Management Commission Permit No. NCG590000 Page 2 of 26 PART 1 A. Coverage (1.) Eligibility of Coverage a. Existing Greensand Water Treatment Plants (WTPs) with individual NPDES permits and new facilities seeking a NPDES permit for a greensand water purification system utilizing Iron and/or Manganese removal systems are eligible for coverage under this general permit. Backwash wastewaters from similar activities such as sand filtration or systems utilizing calcite filtration are eligible and covered under the Greensand WTP effluent requirements section in this general permit. b. Existing Conventional WTPs with a wastewater discharge resulting from water purification facilities with filter backwash, sedimentation basin washdown, and decant from water treatment facilities are eligible for coverage under this general permit. (2.) Limitations on Coverage a. Although this general permit does not cover the following types of discharges, other permits such as an individual NPDES permit, an alternate general permit, or other approval from the Division may be obtained. This permit does not authorize discharges from Water Treatment Plants with the following:  Discharges that are mixed with other process wastewaters.  Discharges to waters classified as High Quality Waters (HQW) or Outstanding Resource Waters (ORW).  Discharges from water purification systems using Membrane Treatment (Reverse Osmosis) or Ion Exchange.  Discharges that would adversely affect a Federal or State listed endangered or threatened species or its critical habitat.  Discharges of pollutants to an impaired waterbody in excess of the wasteload allocation specified in an EPA-Approved TMDL (Total Maximum Daily Load).  Discharges from new Conventional WTPs proposing a discharge to surface waters. b. New Conventional WTPs proposing a discharge to surface waters shall be covered under an individual permit for at least one permit cycle. Upon permit renewal, if an evaluation of the facility’s wastewaters shows no need for additional limitations or requirements beyond what is conta ined in this general permit, then the permittee will be considered for coverage. c. Conventional WTPs proposing to expand existing facilities shall submit a Notice of Intent (NOI) permit application with the proposed expansion/treatment details and an Engineering Alternative Analysis for Division review and approval in order to obtain coverage for the expansion under this permit and receive a revised Certificate of Coverage (CoC). d. This permit does not authorize discharges that the Division has determined to be or which may reasonably be expected to be contributing to a violation of a water quality standard (as defined in the “Red Book” or NC Administrative Code 15A NCAC 02B .0100, .0200, and .0300). e. If the Division determines at any time that the discharge is causing or contributing to a violation of water quality standards or if the Division has any other grounds for modifying or revoking this permit, the Division may require corrective action or require the discharge be permitted differently in accordance with Part II, Section B of this permit. The Division may deny coverage under this permit and require submittal of an applica tion for an individual NPDES permit based on a review of the Notice of Intent (NOI) or other information. f. Whole Effluent Toxicity (WET) test results for the past three years shall be reviewed for existing or expanding Conventional WTPs applying for coverage under this general permit. Permittees with WET test results showing potential for aquatic toxicity may be denied coverage under this general permit which includes a WET limitation of “Pass”. (3.) Transfer Coverage from Other Permits Upon issuance of this general permit, all existing and active individual permits for Greensand and Conventional type WTPs will automatically be considered for coverage under this general permit as permit renewal applications are received. Permit No. NCG590000 Page 3 of 26 B. (1.) Greensand WTP Effluent Limitations and Monitoring Requirements – Discharging to Freshwater a. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge wastewaters from iron and manganese removal type systems for the purpose of water purification to the receiving waters. Such discharges shall be limited and monitored1 by the Permittee as specified below: PARAMETER EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Average Daily Maximum2 Measurement Frequency Sample Type Sample Location Flow3 Monitor Only (MGD) Twice per Month Instantaneous Or Estimate Effluent Total Suspended Solids4 30.0 mg/l (Exception:Trout Waters) 45.0 mg/L (Exception:Trout Waters) Twice per Month Grab Effluent Total Residual Chlorine5 - 17 µg/L Twice per Month Grab Effluent pH 6.0 < pH < 9.0 s.u. Monthly Grab Effluent Turbidity6 50 NTU daily maximum (Exceptions: Trout Waters, Lakes & Reservoirs) Monthly Grab Effluent Total Manganese7, 8 Monitor Only µg/L (Exception: WS Waters) Quarterly Grab Effluent Total Iron7 Monitor Only (µg/L) Quarterly Grab Effluent Total Zinc9 Monitor Only (µg/L) Quarterly Grab Effluent Total Fluoride10 Monitor Only (µg/L) Quarterly Grab Effluent Footnotes: 1. eDMR: No later than 270 days from the effective date listed on the CoC issued with this permit, begin submitting discharge monitoring reports electronically using NC DWR’s eDMR application system. See Special Condition C. 2. The Daily Maximum limits apply to all permittees. More stringent limitations apply to discharges to Trout and Water Supply (WS) Waters and Lakes & Reservoirs as noted above and detailed in the footnotes below. Refer to the Certificate of Coverage (CoC) for receiving stream classifications. 3. For instantaneous flow monitoring, the duration of the discharge must be reported in addition to the total flow. 4. TSS: Permittees discharging to Trout waters shall not exceed a monthly average of 10 mg/L and a daily maximum limit of 15 mg/L. 5. TRC: Limit and monitoring requirements only apply if the facility adds chlorine or chlorine derivatives to water that is eventually discharged. The Division shall consider all effluent TRC values reported below 50 ug/L to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ug/L. 6. Turbidity: The Turbidity Daily Maximum effluent limit is 10 NTU for Trout waters and 25 NTU for Lakes & R eservoirs not designated as trout waters. 7. Iron & Manganese: This sampling requirement does not apply to b ackwash from calcite filtration or similar systems which are not designed for iron or manganese removal and are not blended with other WTP wastewaters. 8. Total Manganese: Permittees discharging to WS waters shall not exceed the manganese water quality standard defined in Administrative Code 15A NCAC 2B .0100, .0200, and .0300. Currently the water quality standard for manganese is a daily maxim um limit of 200 µg/L. 9. Zinc: This requirement applies only to wastewater discharges from plants that use water treated with zinc orthophosphate for backwashing filters. 10. Fluoride: This requirement applies only to wastewater discharges from plants that backwash with fluoridated finished water. b. SAMPLES SHALL BE TAKEN AT THE OUTFALL BUT PRIOR TO MIXING WITH THE RECEIVING WATERS c. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM IN OTHER THAN TRACE AMOUNTS. Permit No. NCG590000 Page 4 of 26 B. (2.) Greensand WTP Effluent Limitations and Monitoring Requirements – Discharging to Saltwater a. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge wastewaters from iron and manganese removal type systems for the purpose of water purification to the receiving waters. Such discharges shall be limited and monitored1 by the Permittee as specified below: PARAMETER EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Average Daily Maximum 2 Measurement Frequency Sample Type Sample Location Flow3 Monitor Only (MGD) Twice per Month Instantaneous Or Estimate Effluent Total Suspended Solids4 30.0 mg/l 45.0 mg/l Twice per Month Grab Effluent Total Residual Chlorine5 - 13 µg/l Twice per Month Grab Effluent pH 6.8 < pH < 8.5 s.u. Monthly Grab Effluent Turbidity 25 NTU Monthly Grab Effluent Total Manganese6 Monitor Only (µg/L) Quarterly Grab Effluent Total Zinc7 Monitor Only (µg/L) Quarterly Grab Effluent Footnotes: 1. eDMR: No later than 270 days from the effective date listed on th e CoC issued with this permit, begin submitting discharge monitoring reports electronically using NC DWR’s eDMR application system. See Special Condition C. 2. The Daily Maximum limits apply to all permittees. 3. For instantaneous flow monitoring, the duration of the discharge must be reported in addition to the total flow. 4. TSS: Permittees discharging to Trout waters shall not exceed a monthly average of 10 mg/L and a daily maximum limit of 15 mg/L. 5. TRC: Limit and monitoring requirements only apply if the facil ity adds chlorine or chlorine derivatives to water that is eventually discharged. The Division shall consider all effluent TRC values reported below 50 ug/l to be in compliance with the permit. However, the Permittee shall continue to record and submit a ll values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ug/l. 6. Manganese: This sampling requirement does not apply to backwash from calcite filtration, or similar systems not designed for iron or manganese removal and are not blended with other WTP wastewaters. 7. Zinc: This requirement applies only to wastewater discharges from plants that use water treated with zinc orthophosphate for backwashing filters. b. SAMPLES SHALL BE TAKEN AT THE OUTFALL BUT PRIOR TO MIXING WITH THE RECEIVING WATERS. c. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM IN OTHER THAN TRACE AMOUNTS. Permit No. NCG590000 Page 5 of 26 B. (3). Conventional WTP Effluent Limitations and Monitoring Requirements - Discharging to Freshwater a. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated wastewaters from filter backwash, sedimentation basin washdown, and decant from water treatment faciliti es to the receiving waters. Such discharges shall be limited and monitored1 by the permittee as specified below: PARAMETERS EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Average Daily Maximum2 Measurement Frequency Sample Type Sample Location Flow3 Monitor Only (MGD) See footnote 3 See footnote 3 Effluent Total Suspended Solids4 30.0 mg/l (Exception:Trout Waters) 45.0 mg/l (Exception:Trout Waters) Twice per Month Grab Effluent Total Residual Chlorine5 - 17 µg/l Twice per Month Grab Effluent pH 6.0 < pH < 9.0 s.u. Monthly Grab Effluent Turbidity6 50 NTU daily maximum (Exceptions: Trout Waters, Lakes & Reservoirs) Monthly Grab Effluent Total Aluminum7 Monitor Only (µg/L) Quarterly Grab Effluent Total Iron8 Monitor Only (µg/L) Quarterly Grab Effluent Total Copper Monitor Only (µg/L) Quarterly Grab Effluent Total Manganese9 Monitor Only µg/L (Exception: WS Waters) Quarterly Grab Effluent Total Zinc10 Monitor Only (µg/L) Quarterly Grab Effluent Total Fluoride11 Monitor Only (µg/L) Quarterly Grab Effluent Ammonia Nitrogen12 Monitor Only (mg/L) Quarterly Grab Effluent Total Nitrogen13 (TN) Monitor Only (mg/L) Quarterly Grab Effluent Total Phosphorus13 (TP) Monitor Only (mg/L) Quarterly Grab Effluent Whole Effluent Toxicity14 Pass Annually 24-hr Composite Effluent Footnotes: 1. eDMR: No later than 270 days from the effective date listed on the CoC issued with this permit, begin submitting discharge monitoring reports electronically using NC DWR’s eDMR application system. See Special Condition C. 2. The Daily Maximum limits apply to all permittees. More stringent limitations apply to discharges to Trout and Water Supply (W S) Waters and Lakes & Reservoirs as noted above and detailed in the footnotes below. Refer to the Certificate of Coverag e (CoC) for receiving stream classifications. 3. Flows < 0.05 MGD shall sample Twice per Month and can estimate or use instantaneous flow monitoring. For instantaneous flow monitoring, the duration of the discharge must be reported on the DMR in addition to the total flow. Flows ≥ 0.05 MGD shall continuously record the effluent discharge. Facilities shall use the design discharge flow as the flow value. Facilities without a design discharge flow shall define flow using the maximum value of all the monthly average discharge flows recorded during the past three years. Facilities proposing an expansion, shall determine a maximum design wastewater discharge flow value as part of the facility design. 4. TSS: Permittees discharging to Trout waters shall not exceed a monthly average of 10 mg/L and a daily maximum limit of 15 mg/L. 5. TRC: Limit and monitoring requirements only apply if the facility adds chlorine or chlorine derivatives to water that is eventually discharged. The Division shall consider all effluent TR C values reported below 50 ug/l to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (incl uding field certified), even if these values fall below 50 ug/l. Permit No. NCG590000 Page 6 of 26 Footnotes continued: 6. Turbidity: The Turbidity Daily Maximum effluent limit is 10 NTU for Trout waters and 25 NTU for Lakes & Reservoirs not designated as trout waters. 7. Total Aluminum: This requirement applies only to wastewater discharges from plants that use an aluminum-based coagulant. 8. Total Iron: This requirement applies only to wastewater discharges from plants that use iron filtration or an iron-based coagulant. 9. Total Manganese: Permittees discharging to WS waters shall not exceed the manganese water quality standard defined in Administrative Code 15A NCAC 2B .0100, .0200, and .0300. Currently the water quality standard for manganese is a daily maximum limit of 200 µg/L. 10. Total Zinc: This requirement applies only to wastewater discharges from pl ants that use backwash water treated with zinc orthophosphate. 11. Total Fluoride: This requirement applies only to wastewater discharges from plants that backwash with fluoridated finished water. 12. Ammonia Nitrogen: This requirement applies only to wastewater discharges from plants that use water treated with chloramines (add ammonia to chlorinated water) for backwashing. 13. TN & TP shall be monitored by facilities discharging to NSW waters or facilities with a discharge flow ≥ 0.05 MGD. TN = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen and NO3-N + NO2-N are Nitrate and Nitrite Nitrogen, respectively. 14. Whole Effluent Toxicity testing shall be performed once per calendar year. See section D. b. SAMPLES SHALL BE TAKEN AT THE OUTFALL BUT PRIOR TO MIXING WITH THE RECEIVING WATERS. c. METALS SHOULD BE SAMPLED IN CONJUNCTION WITH TOXICITY TESTS. d. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM IN OTHER THAN TRACE AMOUNTS. Permit No. NCG590000 Page 7 of 26 B. (4). Conventional WTP Effluent Limitations and Monitoring Requirements - Discharging to Saltwater a. During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated wastewaters from filter backwash, sedimentation basin washdown, and decant from water treatment facilities to the receiving waters. Such discharges shall be limited and monitored1 by the permittee as specified below: PARAMETERS EFFLUENT LIMITS MONITORING REQUIREMENTS Monthly Average Daily Maximum2 Measurement Frequency Sample Type Sample Location Flow3 Monitor Only (MGD) See footnote 3 See footnote 3 Effluent Total Suspended Solids 30.0 mg/l 45.0 mg/l Twice per Month Grab Effluent Total Residual Chlorine4 - 13 µg/l Twice per Month Grab Effluent pH 6.8 < pH < 8.5 s.u. Monthly Grab Effluent Turbidity 25 NTU Monthly Grab Effluent Total Aluminum5 Monitor Only (µg/L) Quarterly Grab Effluent Total Copper Monitor Only (µg/L) Quarterly Grab Effluent Total Manganese Monitor Only (µg/L) Quarterly Grab Effluent Total Zinc6 Monitor Only (µg/L) Quarterly Grab Effluent Ammonia Nitrogen7 Monitor Only (mg/L) Quarterly Grab Effluent Total Nitrogen8 (TN) Monitor Only (mg/L) Quarterly Grab Effluent Total Phosphorus8 (TP) Monitor Only (mg/L) Quarterly Grab Effluent Whole Effluent Toxicity9 Pass Annually 24-hr Composite Effluent Footnotes: 1. eDMR: No later than 270 days from the effective date listed on the CoC issued with this permit, begin submitting discharge monitoring reports electronically using NC DWR’s eDMR application system. See Special Condition C. 2. The Daily Maximum limits apply to all permittees. 3. Flows < 0.05 MGD shall sample Twice per Month and can estimate or use instantaneous flow monitoring. For instantaneous flow monitoring, the duration of the discharge must be reported on the DMR in addition to the total flow. Flows ≥ 0.05 MGD shall continuously record the effluent discharge. Facilities shall use the design discharge flow as the flow value. Facilities without a design discharge flow value shall define flow using the maximum value of all the monthly average discharge flows recorded during the past three years. Facilities proposing an expansion, shall determine a maximum design wastewater discharge flow value as part of the fac ility design. 4. TRC: Limit and monitoring requirements only apply if the facility adds chlorine or chlorine derivatives to water that is eventuall y discharged. The Division shall consider all effluent TRC values reported below 50 ug/l to be in compliance wi th the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (incl uding field certified), even if these values fall below 50 ug/l. 5. Total Aluminum: This requirement applies only to wastewater discharges from plants that use an aluminum-based coagulant. 6. Total Zinc: This requirement applies only to wastewater discharges from plants that use backwash water treated with zinc orthophosphate. 7. Ammonia Nitrogen: This requirement applies only to wastewater discharges from plants that use water treated with chloramines (add ammonia to chlorinated water) for backwashing. Permit No. NCG590000 Page 8 of 26 Footnotes continued: 8. TN & TP shall be monitored by facilities discharging to NSW waters or facilities with a discharge flow ≥ 0.05 MGD. TN = TKN + NO3-N + NO2-N, where TKN is Total Kjeldahl Nitrogen and NO3-N + NO2-N are Nitrate and Nitrite Nitrogen, respectively. Refer to the Certificate of Coverage (CoC) for receiving stream classifications. 9. Whole Effluent Toxicity testing shall be performed once per calendar year. See section D. b. SAMPLES SHALL BE TAKEN AT THE OUTFALL BUT PRIOR TO MIXING WITH THE RECEIVING WATERS. c. METALS SHOULD BE SAMPLED IN CONJUNCTION WITH TOXICITY TESTS. d. THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM IN OTHER THAN TRACE AMOUNTS. Permit No. NCG590000 Page 9 of 26 C. ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and specify that, if a state does not establish a system to receive such submittals, then permittees must submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates that these regulations will be adopted and is beginning implementation in late 2013. NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard Conditions for NPDES Permits):  Section B. (11.) Signatory Requirements  Section D. (2.) Reporting  Section D. (6.) Records Retention  Section E. (5.) Monitoring Reports 1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)] Beginning no later than 270 days from the effective date listed on the Certificate of Coverage issued with this permit, the permittee shall begin reporting discharge monitoring data electronically using the NC DWR’s Electronic Discharge Monitoring Report (eDMR) internet application. Monitoring results obtained during the previous month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit monthly DMRs electronically using the internet. Until such time that the state’s eDMR application is compliant with EPA’s Cross-Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one signed original and a copy of the computer printed eDMR to the following address: NC DENR / DWR / Information Processing Unit ATTENTION: Central Files / eDMR 1617 Mail Service Center Raleigh, North Carolina 27699-1617 If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being physically located in an area where less than 10 percent of the households have broadband access, then a temporary waiver from the NPDES electronic reporting requirements may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in writing to the Division for written approval at least sixty (60) days prior to the date the facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted electronically to the Division unless the permittee re-applies for and is granted a new temporary waiver by the Division. Information on eDMR and application for a temporary waiver from the NPDES electronic reporting requirements is found on the following web page: http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. Permit No. NCG590000 Page 10 of 26 2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)] All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina’s eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr Certification. Any person submitting an electronic DMR using the state’s eDMR system shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." 3. Records Retention [Supplements Section D. (6.)] The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These records or copies shall be maintained for a period of at least 3 years from the date of the report. This period may be extended by request of the Director at any time [40 CFR 122.41]. Permit No. NCG590000 Page 11 of 26 D. WHOLE EFFLUENT TOXICITY TESTING REQUIREMENTS (1.) Applicability Facilities having Conventional Water Treatment Plant processes are required to perform annual toxicity tests each calendar year using one of the following procedures: a. CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT APPLIES TO – Discharges to Freshwater with an Instream Waste Concentration* (IWC) ≥ 0.25% Discharges to Saltwater with a Modeled Dilution b. ACUTE TOXICITY PASS/FAIL PERMIT LIMIT APPLIES TO – Discharges to Freshwater with an Instream Waste Concentration* (IWC) < 0.25% Discharges to Saltwater with Tidal receiving waters not modeled The test organism for facilities discharging to freshwaters shall be Ceriodaphnia dubia, unless another test organism has been authorized for use by the Division and is listed in the Supplement to the Certificate of Coverage. The test organism for facilities discharging to saltwaters shall be Mysidopsis bahia, unless another test organism has been authorized for use by the Division and is listed in the Supplement to the Certificate of Coverage. Authorization to change the test type and organism can be obtained from the Water Sciences Section in the Division of Water Resources. * The IWC or modeled dilution will be specified on the Supplement to the Certificate of Coverage (CoC) issued with the General Permit. A discussion on how the percent effluent concentration is determined, can be found in the General Permit Fact Sheet. If the IWC exceeds 90%, a maximum default value of 90% effluent shall be used for WET testing. (2.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT APPLIES TO – Discharges to Freshwater with an Instream Waste Concentration (IWC) ≥ 0.25%, and Discharges to Saltwater with a Modeled Dilution For Freshwater receiving streams the effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia (or other approved test organism) at an effluent concentration specified on the Supplement to the CoC issued with this general permit. For Saltwater receiving streams the effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Mysidopsis bahia (or other approved test organism) at an effluent concentration specified on the Supplement to the CoC issued with this general permit. The permit holder shall perform at a minimum, annual monitoring using procedures described below to establish compliance with the permit condition. WET tests shall be performed once per calendar year. Effluent sampling for this testing must be obtained during representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge below all treatment processes. If the test procedure performed as the first test of the year results in a failure or ChV below the permit limit, then multiple-concentration testing shall be performed at a minimum, in each of the two following months. For freshwater receiving streams the test shall be performed as described in “North Carolina Ceriodaphnia Chronic Whole Effluent Toxicity Test Procedure” (Revised-December 2010). All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month(s) in which the test were performed, using the parameter code Permit No. NCG590000 Page 12 of 26 TGP3B for the pass/fail results and THP3B for the Chronic Value on the DWR Form AT-3. For saltwater receiving streams the test shall be performed as described in EPA Method 1007.0\Mysid\Mysidopsis bahia\Survival, Growth, and Fecundity Test, as described in Short-Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms, Third Edition, EPA821-R-02-014, October 2002. The procedure will be performed as written with the following exceptions:  The test treatments will consist of a control and the effluent concentration listed on the Supplement to the CoC (“pass/fail”), or a control and five effluent concentrations, one of which will be one-half the effluent concentration listed on the Supplement to the CoC and one of which will be twice the effluent concentration listed on the Supplement to the CoC .  Mortality for pass/fail tests will be evaluated using the t test described in Section 11.3 in Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms, Fifth Edition. EPA— 821-R-02-012, October 2002, applying an alpha level of 0.05.  The growth endpoint for pass/fail tests will be determined using Appendix G of Short-Term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms, Third Edition, EPA-821-R-02-014, October 2002, applying an alpha level of 0.01. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month(s) in which tests were performed. For pass/fail results, report using the parameter code TGP3E and the DWR Form AT-4 (original), which is to be sent to the address below. Additionally, for reporting Chronic Value results use the parameter code THP3E and DWR Form AT-6. The original signed forms shall be sent to the following address: Attention: North Carolina Division of Water Resources Water Sciences Section 1621 Mail Service Center Raleigh, N.C. 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after the end of the month in which the toxicity test was sampled. The permittee must report on the discharge monitoring report (DMR) form whether the test passes or fails at the specified effluent concentration. Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from the facility during the year in which toxicity monitoring is required, the permittee will submit the aquatic toxicity (AT) test form with the notation of “No Flow” in Permit No. NCG590000 Page 13 of 26 the comment area of the form. The report shall be submitted to the Water Sciences Section at the address cited above. Should the permittee fail to monitor during the year in which toxicity monitoring is required, then quarterly monitoring shall begin immediately. Upon passing, this quarterly test requirement will revert back to an annual requirement of once per calendar year. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Resources indicate potential impacts to the receiving stream, the permittee may be required to perform additional testing and, if necessary, apply for an individual permit that could include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of monitoring. (3.) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT APPLIES TO - Discharges to Freshwater with an Instream Waste Concentration (IWC) < 0.25% Discharges to Saltwater with Tidal receiving waters not modeled The permittee shall conduct acute toxicity tests on an annual basis, once each calendar year, using protocols defined in the North Carolina Procedure Document entitled “Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent Concentration” (Revised December 2010). For Freshwater receiving streams, the monitoring shall be performed as a Ceriodaphnia dubia 24 hour static test. If another test organism has been approved by the Division for this facility, it will be listed on the Supplement to the CoC. For Saltwater receiving streams. the monitoring shall be performed as a Mysid Shrimp (Mysidopsis bahia) 24 hour static test. If another test organism has been approved by the Division for this facility, it will be listed on the Supplement to the CoC. The effluent concentration at which there may be at no time significant acute mortality is 90% (defined as treatment two in the procedure document). Effluent sampling for this testing must be obtained during a representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge below all treatment processes. Should any single annual monitoring test indicate a failure to meet specified limits, then quarterly monitoring will begin immediately. Upon passing, this quarterly test requirement will revert back to an annual requirement of once per calendar year. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code specified below and DWR Form AT-2. For Freshwater receiving streams, use parameter code TGE3B. For Saltwater receiving streams, use parameter code TGE3E. The DWR Form AT-2 (original) is to be sent to the following address: Attention: North Carolina Division of Water Resources Water Sciences Section 1621 Mail Service Center Raleigh, N.C. 27699-1621 Permit No. NCG590000 Page 14 of 26 Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days after the end of the month in which the toxicity test was sampled. Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from the facility during the year in which toxicity monitoring is required, the permittee will submit the aquatic toxicity (AT) test form with the notation of “No Flow” in the comment area of the form. The report shall be submitted to the Water Sciences Section at the address cited above. The permittee must report on the discharge monitoring report (DMR) form whether the test passes or fails at the specified effluent concentration. Should the permittee fail to monitor during the year in which toxicity monitoring is required, then quarterly monitoring will begin immediately until such time that a single test is passed. Upon passing, this quarterly test requirement will revert back to an annual requirement of once per calendar year. Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of Water Resources indicate potential impacts to the receiving stream, the permittee may be required to perform additional testing and if necessary, apply for an individual permit which could include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of monitoring. Permit No. NCG590000 Page 15 of 26 PART II STANDARD CONDITIONS FOR NPDES PERMITS Section A. Definitions 2/Month Samples are collected twice per month with at least ten calendar days between sampling events. These samples shall be representative of the wastewater discharged during the sample period. 3/Week Samples are collected three times per week on three separate calendar days. These samples shall be representative of the wastewater discharged during the sample period. Act or "the Act" The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC 1251, et. seq. Annual Average The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar year. In the case of fecal coliform, the geometric mean of such discharges. Arithmetic Mean The summation of the individual values divided by the number of individual values. Bypass The known diversion of waste streams from any portion of a treatment facility including the collection system, which is not a designed or established or operating mode for the facility. Calendar Day The period from midnight of one day until midnight of the next day. However, for purposes of this permit, any consecutive 24-hour period that reasonably represents the calendar day may be used for sampling. Calendar Week The period from Sunday through the following Saturday. Calendar Quarter One of the following distinct periods: January through March, April through June, July through September, and October through December. Composite Sample A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 mL in such a manner as to result in a total sample representative of the wastewater discharge during the sample period. The Director may designate the most appropriate method (specific number and size of aliquots necessary, the time interval between grab samples, etc.) on a case-by-case basis. Samples may be collected manually or automatically. Composite samples may be obtained by the following methods: (1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the rate of flow. (2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour period of discharge and combined proportional to the rate of flow measured at the time of individual sample collection, or (3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period with the time intervals between samples determined by a preset number of gallons passing the sampling point. Flow measurement between sample intervals shall be determined by use of a flow recorder and totalizer, and the preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at the treatment system, or (4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at a constant time interval. Use of this method requires prior approval by the Director. This method may only be used in situations where effluent flow rates vary less than 15 percent. The following restrictions also apply: Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters Influent samples shall not be collected more than once per hour. Permit No. NCG590000 Page 16 of 26 Permittees with wastewater treatment systems whose detention time < 24 hours shall collect effluent grab samples at intervals of no greater than 20 minutes apart during any 24-hour period. Permittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect effluent grab samples at least every six hours; there must be a minimum of four samples during a 24-hour sampling period. Continuous flow measurement Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance activities on the flow device. Daily Discharge The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the calendar day for purposes of sampling. For pollutants measured in units of mass, the "daily discharge" is calculated as the total mass of the pollutant discharged over the day. For pollutants expressed in other units of measurement, the “daily discharge” is calculated as the average measurement of the pollutant over the day. (40 CFR 122.2; see also “Composite Sample,” above.) Daily Maximum The highest “daily discharge” during the calendar month. Daily Sampling Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the permit. Sampling shall be conducted on weekdays except where holidays or other disruptions of normal operations prevent weekday sampling. If sampling is required for all seven days of the week for any permit parameter(s), that requirement will be so noted on the Effluent Limitations and Monitoring Page(s). DWR or “the Division” The Division of Water Resources, Department of Environment and Natural Resources. Effluent Wastewater discharged following all treatment processes from a water pollution control facility or other point source whether treated or untreated. EMC The North Carolina Environmental Management Commission EPA The United States Environmental Protection Agency Facility Closure Cessation of all activities that require coverage under this NPDES permit. Completion of facility closure will allow this permit to be rescinded. Geometric Mean The Nth root of the product of the individual values where N = the number of individual values. For purposes of calculating the geometric mean, values of “0” (or “< [detection level]”) shall be considered = 1. Grab Sample Individual samples of at least 100 mL collected over a period of time not exceeding 15 minutes. Grab samples can be collected manually. Grab samples must be representative of the discharge (or the receiving stream, for instream samples). Hazardous Substance Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the CWA. Instantaneous flow measurement The flow measured during the minimum time required for the flow measuring device or method to produce a result in that instance. To the extent practical, instantaneous flow measurements coincide with the collection of any grab samples required for the same sampling period so that together the samples and flow are representative of the discharge during that sampling period. Permit No. NCG590000 Page 17 of 26 Monthly Average (concentration limit) The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month. In the case of fecal coliform or other bacterial parameters or indicators, the geometric mean of such discharges. Permit Issuing Authority The Director of the Division of Water Resources. Quarterly Average (concentration limit) The arithmetic mean of all samples taken over a calendar quarter. Severe property damage 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 excludes economic loss caused by delays in production. Toxic Pollutant: Any pollutant listed as toxic under Section 307(a)(1) of the CWA. Upset An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with permit effluent limitations and/or monitoring requirements. An upset does not include noncompliance caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. Weekly Average (concentration limit) The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week. In the case of fecal coliform or other bacterial parameters or indicators, the geometric mean of such discharges. Section B. General Conditions l. Duty to Comply The Permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of the CWA and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification; or denial of a permit renewal application [40 CFR 122.41]. a. The Permittee shall comply with effluent standards or prohibitions established under section 307(a) of the CWA for toxic pollutants and with standards for sewage sludge use or disposal established under section 405(d) of the CWA within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the requirement. b. The CWA provides that any person who violates section[s] 301, 302, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any such sections in a permit issued under section 402, or any requirement imposed in a pretreatment program approved under sections 402(a)(3) or 402(b)(8) of the Act, is subject to a civil penalty not to exceed $37,500 per day for each violation. [33 USC 1319(d) and 40 CFR 122.41(a)(2)] c. The CWA provides that any person who negligently violates sections 301, 302, 306, 307, 308, 318, or 405 of the Act, or any condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, or any requirement imposed in a pretreatment program approved under section 402(a)(3) or 402(b)(8) of the Act, is subject to criminal penalties of $2,500 to $25,000 per day of violation, or imprisonment of not more than 1 year, or both. In the case of a second or subsequent conviction for a negligent violation, a person shall be subject to criminal penalties of not more than $50,000 per day of violation, or by imprisonment of not more than 2 years, or both. [33 USC 1319(c)(1) and 40 CFR 122.41(a)(2)] d. Any person who knowingly violates such sections, or such conditions or limitations is subject to criminal penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. In the case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal penalties of not more than $100,000 per day of violation, or imprisonment of not more than 6 years, or both. [33 USC 1319(c)(2) and 40 CFR 122.41(a)(2)] e. Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, and who knows at that time that he thereby places another person in imminent danger of death or serious bodily Permit No. NCG590000 Page 18 of 26 injury, shall, upon conviction, be subject to a fine of not more than $250,000 or imprisonment of not more than 15 years, or both. In the case of a second or subsequent conviction for a knowing endangerment violation, a person shall be subject to a fine of not more than $500,000 or by imprisonment of not more than 30 years, or both. An organization, as defined in section 309(c)(3)(B)(iii) of the CWA, shall, upon conviction of violating the imminent danger provision, be subject to a fine of not more than $1,000,000 and can be fined up to $2,000,000 for second or subsequent convictions. [40 CFR 122.41(a)(2)] f. Under state law, a civil penalty of not more than $25,000 per violation may be assessed against any person who violates or fails to act in accordance with the terms, conditions, or requirements of a permit. [North Carolina General Statutes § 143-215.6A] g. Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302, 306, 307, 308, 318 or 405 of this Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of this Act. Administrative penalties for Class I violations are not to exceed $16,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed $37,500. Penalties for Class II violations are not to exceed $16,000 per day for each day during which the violation continues, with the maximum amount of any Class II penalty not to exceed $177,500. [33 USC 1319(g)(2) and 40 CFR 122.41(a)(3)] 2. 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 with a reasonable likelihood of adversely affecting human health or the environment [40 CFR 122.41(d)]. 3. Civil and Criminal Liability Except as provided in permit conditions on "Bypassing" (Part II.C.4), “Upsets” (Part II.C.5) and "Power Failures" (Part II.C.7), nothing in this permit shall be construed to relieve the Permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act, 33 USC 1319. Furthermore, the Permittee is responsible for consequential damages, such as fish kills, even though the responsibility for effective compliance may be temporarily suspended. 4. Oil and Hazardous Substance Liability Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee from any responsibilities, liabilities, or penalties to which the Permittee is or may be subject to under NCGS 143- 215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321. Furthermore, the Permittee is responsible for consequential damages, such as fish kills, even though the responsibility for effective compliance may be temporarily suspended. 5. Property Rights The issuance of this permit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations [40 CFR 122.41(g)]. 6. Onshore or Offshore Construction This permit does not authorize or approve the construction of any onshore or offshore physical structures or facilities or the undertaking of any work in any navigable waters. 7. Severability The provisions of this permit are severable. If any provision of this permit, or the application of any provision of this permit to any circumstances, is held invalid, the application of such provision to other circumstances, and the remainder of this permit, shall not be affected thereby [NCGS 150B-23]. 8. Duty to Provide Information The Permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any information which the Permit Issuing Authority 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 Permit Issuing Authority upon request, copies of records required by this permit [40 CFR 122.41(h)]. 9. Duty to Reapply If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the Permittee must apply for and obtain a new permit [40 CFR 122.41(b)]. Permit No. NCG590000 Page 19 of 26 10. Expiration of Permit The Permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to discharge beyond the expiration date, the Permittee shall submit such information, forms, and fees as are required by the agency authorized to issue permits no later than 180 days prior to the expiration date unless permission for a later date has been granted by the Director. (The Director shall not grant permission for applications to be submitted later than the expiration date of the existing permit.) [40 CFR 122.21(d)] Any Permittee that has not requested renewal at least 180 days prior to expiration, or any Permittee that does not have a permit after the expiration and has not requested renewal at least 180 days prior to expiration, will subject the Permittee to enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq. 11. Signatory Requirements All applications, reports, or information submitted to the Permit Issuing Authority shall be signed and certified [40 CFR 122.41(k)]. a. All permit applications shall be signed as follows: (1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision making functions for the corporation, or (b) the manager of one or more manufacturing, production, or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures . (2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or (3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or ranking elected official [40 CFR 122.22]. b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be signed by a person described in paragraph a. above or by a duly authorized representative of that person. A person is a duly authorized representative only if: (1) The authorization is made in writing by a person described above; (2) The authorization specified either an individual or a position having responsibility for the overall operation of the regulated facility or activity, such as the position of plant manager, operator of a well or well field, superintendent, a position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position.); and (3) The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22] c. Changes to authorization: If an authorization under paragraph (b) of this section is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization satisfying the requirements of paragraph (b) of this section must be submitted to the Director prior to or together with any reports, information, or applications to be signed by an authorized representative [40 CFR 122.22] d. Certification. Any person signing a document under paragraphs a. or b. of this section shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." 12. Permit Actions This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the Permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any permit condition [40 CFR 122.41(f)]. Permit No. NCG590000 Page 20 of 26 13. Permit Modification, Revocation and Reissuance, or Termination The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina Administrative Code, Subchapter 02H .0100; and North Carolina General Statute 143.215.1 et. al. 14. Annual Administering and Compliance Monitoring Fee Requirements The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A NCAC 02H .0105(b)(2) may cause this Division to initiate action to revoke the permit. Section C. Operation and Maintenance of Pollution Controls 1. Certified Operator Owners of classified water pollution control systems must designate operators, certified by the Water Pollution Control System Operators Certification Commission (WPCSOCC), of the appropriate type and grade for the system, and, for each classification must [T15A NCAC 08G .0201]: a. designate one Operator In Responsible Charge (ORC) who possesses a valid certificate of the type and grade at least equivalent to the type and grade of the system; b. designate one or more Back-up Operator(s) in Responsible Charge (Back-up ORCs) who possesses a valid certificate of the type of the system and no more than one grade less than the grade of the system, with the exception of no backup operator in responsible charge is required for systems whose minimum visitation requirements are twice per year; and c. submit a signed completed "Water Pollution Control System Operator Designation Form" to the Commission (or to the local health department for owners of subsurface systems) countersigned by the designated certified operators, designating the Operator in Responsible Charge (ORC) and the Back-up Operator in Responsible Charge (Back-up ORC): (1) 60 calendar days prior to wastewater or residuals being introduced into a new system; or (2) within 120 calendar days following: receiving notification of a change in the classification of the system requiring the designation of a new Operator in Responsible Charge (ORC) and Back-up Operator in Responsible Charge (Back-up ORC) of the proper type and grade; or a vacancy in the position of Operator in Responsible Charge (ORC) or Back-up Operator in Responsible Charge (Back-up ORC). (3) within seven calendar days of vacancies in both ORC and Back-up ORC positions replacing or designating at least one of the responsibilities. The ORC of each Class I facility (or the Back-up ORC, when acting as surrogate for the ORC) must: Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment facility must be visited at least weekly Comply with all other conditions of 15A NCAC 08G .0204. The ORC of each Class II, III and IV facility (or the Back-up ORC, when acting as surrogate for the ORC) must: Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment facility must be visited at least five days per week, excluding holidays Properly manage and document daily operation and maintenance of the facility Comply with all other conditions of 15A NCAC 08G .0204. 2. Proper Operation and Maintenance The Permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the Permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requires the Permittee to install and operate backup or auxiliary facilities only when necessary to achieve compliance with the conditions of the permit [40 CFR 122.41(e)]. Permit No. NCG590000 Page 21 of 26 NOTE: Properly and officially designated operators are fully responsible for all proper operation and maintenance of the facility, and all documentation required thereof, whether acting as a contract operator [subcontractor] or a member of the Permittee’s staff. 3. Need to Halt or Reduce 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 condition of this permit [40 CFR 122.41(c)]. 4. Bypassing of Treatment Facilities a. Bypass not exceeding limitations [40 CFR 122.41(m)(2)] The Permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of Paragraphs b. and c. of this section. b. Notice [40 CFR 122.41(m)(3)] (1) Anticipated bypass. If the Permittee knows in advance of the need for a bypass, it shall submit prior notice, if possible at least ten days before the date of the bypass; including an evaluation of the anticipated quality and effect of the bypass. (2) Unanticipated bypass. The Permittee shall submit notice of an unanticipated bypass as required in Part II.E.6. (24-hour notice). c. Prohibition of Bypass (1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority 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 backup 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 b. of this section. (2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement action against a Permittee for a bypass as provided in any current or future system-wide collection system permit associated with the treatment facility. (3) The Permit Issuing Authority may approve an anticipated bypass, after considering its adverse effects, if the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c. (1) of this section. 5. Upsets a. Effect of an upset [40 CFR 122.41(n)(2)]: An upset constitutes an affirmative defense to an action brought for noncompliance with such technology based permit effluent limitations if the requirements of paragraph b. of this condition 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 to judicial review. b. Conditions necessary for a demonstration of upset: Any Permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that: (1) An upset occurred and that the Permittee can identify the cause(s) of the upset; (2) The Permittee facility was at the time being properly operated; and (3) The Permittee submitted notice of the upset as required in Part II.E.6.(b) of this permit. (4) The Permittee complied with any remedial measures required under Part II.B.2. of this permit. c. Burden of proof [40 CFR 122.41(n)(4)]: The Permittee seeking to establish the occurrence of an upset has the burden of proof in any enforcement proceeding. 6. Removed Substances Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant from such materials from entering waters of the State or navigable waters of the United States except as permitted Permit No. NCG590000 Page 22 of 26 by the Commission. The Permittee shall comply with all applicable state and Federal regulations governing the disposal of sewage sludge, including 40 CFR 503, Standards for the Use and Disposal of Sewage Sludge; 40 CFR Part 258, Criteria For Municipal Solid Waste Landfills; and 15A NCAC Subchapter 2T, Waste Not Discharged To Surface Waters. The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use or disposal practices. 7. Power Failures The Permittee is responsible for maintaining adequate safeguards (as required by 15A NCAC 02H .0124) to prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means of alternate power sources, standby generators or retention of inadequately treated effluent. Section D. Monitoring and Records l. Representative Sampling Samples collected and measurements taken, as required herein, shall be representative of the permitted discharge. Samples collected at a frequency less than daily shall be taken on a day and time that is representative of the discharge for the period the sample represents. All samples shall be taken at the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted by any other wastestream, body of water, or substance. Monitoring points shall not be changed without notification to and the approval of the Permit Issuing Authority [40 CFR 122.41(j)]. 2. Reporting Monitoring results obtained during the previous month(s) shall be summarized for each month and reported on a monthly Discharge Monitoring Report (DMR) Form (MR 1, 1.1, 2, 3) or alternative forms approved by the Director, postmarked no later than the last calendar day of the month following the completed reporting period. The first DMR is due on the last day of the month following the effective date on the Certificate of Coverage issued with this permit or in the case of a new facility, on the last day of the month following the commencement of discharge. Duplicate signed copies of these, and all other reports required herein, shall be submitted to the following address: NC DENR / Division of Water Resources / Water Quality Permitting Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 3. Flow Measurements Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. The Director shall approve the flow measurement device and monitoring location prior to installation. Once-through condenser cooling water flow monitored by pump logs, or pump hour meters as specified in Part I of this permit and based on the manufacturer's pump curves shall not be subject to this requirement. 4. Test Procedures Laboratories used for sample analysis must be certified by the Division. Permittees should contact the Division’s Laboratory Certification Section (919 733-3908 or http://portal.ncdenr.org/web/wq/lab/cert) for information regarding laboratory certifications. Facilities whose personnel are conducting testing of field-certified parameters only must hold the appropriate field parameter laboratory certifications. Test procedures for the analysis of pollutants shall conform to the EMC regulations (published pursuant to NCGS 143-215.63 et. seq.), the Water and Air Quality Reporting Acts, and to regulations published pursuant to Section 304(g), 33 USC 1314, of the CWA (as amended), and 40 CFR 136; or in the case of sludge use or disposal, Permit No. NCG590000 Page 23 of 26 approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless other test procedures have been specified in this permit [40 CFR 122.41]. To meet the intent of the monitoring required by this permit, all test procedures must produce minimum detection and reporting levels that are below the permit discharge requirements and all data generated must be reported down to the minimum detection or lower reporting level of the procedure. If no approved methods are determined capable of achieving minimum detection and reporting levels below permit discharge requirements, then the most sensitive (method with the lowest possible detection and reporting level) approved method must be used. 5. Penalties for Tampering The CWA provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any monitoring device or method required to be maintained under this permit shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. If a conviction of a person is for a violation committed after a first conviction of such person under this paragraph, punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years, or both [40 CFR 122.41]. 6. Records Retention Except for records of monitoring information required by this permit related to the Permittee’s sewage sludge use and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40 CFR 503), the Permittee shall retain records of all monitoring information, including: all calibration and maintenance records all original strip chart recordings for continuous monitoring instrumentation copies of all reports required by this permit copies of all data used to complete the application for this permit These records or copies shall be maintained for a period of at least 3 years from the date of the sample, measurement, report or application. This period may be extended by request of the Director at any time [40 CFR 122.41]. 7. Recording Results For each measurement or sample taken pursuant to the requirements of this permit, the Permittee shall record the following information [40 CFR 122.41]: a. The date, exact place, and time of sampling or measurements; b. The individual(s) who performed the sampling or measurements; c. The date(s) analyses were performed; d. The individual(s) who performed the analyses; e. The analytical techniques or methods used; and f. The results of such analyses. 8. Inspection and Entry The Permittee shall allow the Director, or an authorized representative (including an authorized contractor acting as a representative of the Director), upon the presentation of credentials and other documents as may be required by law, to; a. Enter, at reasonable times, upon the Permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit; b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this 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 of assuring permit compliance or as otherwise authorized by the CWA, any substances or parameters at any location [40 CFR 122.41(i)]. Permit No. NCG590000 Page 24 of 26 Section E Reporting Requirements l. Change in Discharge All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge of any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute a violation of the permit. 2. Planned Changes The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions to the permitted facility [40 CFR 122.41(l)]. Notice is required only when: a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR 122.29(b); or b. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants subject neither to effluent limitations in the permit, nor to notification requirements under 40 CFR 122.42(a)(1); or c. The alteration or addition results in a significant change in the Permittee’s sludge use or disposal practices, and such alteration, addition or change may justify the application of permit conditions that are different from or absent in the existing permit, including notification of additional use or disposal sites not reported during the permit application process or not reported pursuant to an approved land application plan. 3. Anticipated Noncompliance The Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other activities that might result in noncompliance with the permit [40 CFR 122.41(l)(2)]. 4. Transfers This permit is not transferable to any person without prior written notice to and approval from the Director in accordance with 40 CFR 122.61. The Director may condition approval in accordance with NCGS 143-215.1, in particular NCGS 143-215.1(b)(4)b.2., and may require modification or revocation and reissuance of the permit, or a minor modification, to identify the new permittee and incorporate such other requirements as may be necessary under the CWA [40 CFR 122.41(l)(3), 122.61] or state statute. 5. Monitoring Reports Monitoring results shall be reported at the intervals specified elsewhere in this permit [40 CFR 122.41(l)(4)]. a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II.D.2) or forms provided by the Director for reporting results of monitoring of sludge use or disposal practices. b. If the Permittee monitors any pollutant more frequently than required by this permit using test procedures approved under 40 CFR Part 136 and at a sampling location specified in this permit or other appropriate instrument governing the discharge, the results of such monitoring shall be included in the calculation and reporting of the data submitted on the DMR. 6. Twenty-four Hour Reporting a. The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment. Any information shall be provided orally within 24 hours from the time the Permittee became 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 of the noncompliance, and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance [40 CFR 122.41(l)(6)]. b. The Director may waive the written report on a case-by-case basis for reports under this section if the oral report has been received within 24 hours. c. Occurrences outside normal business hours may also be reported to the Division’s Emergency Response personnel at (800) 662-7956, (800) 858-0368 or (919) 733-3300. 7. Other Noncompliance The Permittee shall report all instances of noncompliance not reported under Part II.E.5 and 6. of this permit at the time monitoring reports are submitted. The reports shall contain the information listed in Part II.E.6. of this permit [40 CFR 122.41(l)(7)]. Permit No. NCG590000 Page 25 of 26 8. Other Information Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or in any report to the Director, it shall promptly submit such facts or information [40 CFR 122.41(l)(8)]. 9. Noncompliance Notification The Permittee shall report by telephone to either the central office or the appropriate regional office of the Division as soon as possible, but in no case more than 24 hours or on the next working day following the occurrence or first knowledge of the occurrence of any of the following: a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge digester; the known passage of a slug of hazardous substance through the facility; or any other unusual circumstances. b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc. c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass without treatment of all or any portion of the influent to such station or facility. Persons reporting such occurrences by telephone shall also file a written report within 5 days following first knowledge of the occurrence. Also see reporting requirements for municipalities in Part IV.C.2.c. of this permit. 10. Availability of Reports Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices of the Division. As required by the Act, effluent data shall not be considered confidential. Knowingly making any false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143- 215.1(b)(2) or in Section 309 of the Federal Act. 11. Penalties for Falsification of Reports The CWA provides that any person who knowingly makes any false statement, representation, or certification in any record or other document submitted or required to be maintained under this permit, including monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of not more than $25,000 per violation, or by imprisonment for not more than two years per violation, or by both [40 CFR 122.41]. 12. Annual Performance Reports Permittees who own or operate facilities that primarily collect or treat municipal or domestic wastewater and have an average annual flow greater than 200,000 gallons per day shall provide an annual report to the Permit Issuing Authority and to the users/customers served by the Permittee (NCGS 143-215.1C). The report shall summarize the performance of the collection or treatment system, as well as the extent to which the facility was compliant with applicable Federal or State laws, regulations and rules pertaining to water quality. The report shall be provided no later than sixty days after the end of the calendar or fiscal year, depending upon which annual period is used for evaluation. The report shall be sent to: NC DENR / Division of Water Resources / Water Quality Permitting Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Permit No. NCG590000 Page 26 of 26 PART III OTHER REQUIREMENTS Section A. Construction a. The Permittee shall not commence construction of wastewater treatment facilities, nor add to the plant's treatment capacity, nor change the treatment process(es) utilized at the treatment plant unless (1) the Division has issued an Authorization to Construct (AtC) permit or (2) the Permittee is exempted from such AtC permit requirements under Item b. of this Section. b. In accordance with NCGS 143-215.1(a5) [SL 2011-394], no permit shall be required to enter into a contract for the construction, installation, or alteration of any treatment work or disposal system or to construct, install, or alter any treatment works or disposal system within the State when the system’s or work’s principle function is to conduct, treat, equalize, neutralize, stabilize, recycle, or dispose of industrial waste or sewage from an industrial facility and the discharge of the industrial waste or sewage is authorized under a permit issued for the discharge of the industrial waste or sewage into the waters of the State. Notwithstanding the above, the permit issued for the discharge may be modified if required by federal regulation. c. Issuance of an AtC will not occur until Final Plans and Specifications for the proposed construction have been submitted by the Permittee and approved by the Division. Section B. Groundwater Monitoring The Permittee shall, upon written notice from the Director, conduct groundwater monitoring as may be required to determine the compliance of this NPDES permitted facility with the current groundwater standards. Section C. Changes in Discharges of Toxic Substances The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe (40 CFR 122.42): a. That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following "notification levels"; (1) One hundred micrograms per liter (100 µg/L); (2) Two hundred micrograms per liter (200 µg/L) for acrolein and acrylonitrile; five hundred micrograms per liter (500 µg/L) for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol; and one milligram per liter (1 mg/L) for antimony; (3) Five times the maximum concentration value reported for that pollutant in the permit application. b. That any activity has occurred or will occur which would result in any discharge, on a non-routine or infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following "notification levels"; (1) Five hundred micrograms per liter (500 µg/L); (2) One milligram per liter (1 mg/L) for antimony; (3) Ten times the maximum concentration value reported for that pollutant in the permit application. Section D. Facility Closure Requirements The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system covered by this permit. The Division may require specific measures during deactivation of the system to prevent adverse impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit continue at the permitted facility. From:Denard, Derek To:lcarver@marionnc.org Cc:Wiggs, Linda; Davidson, Landon Subject:RE: permit modification Date:Wednesday, January 7, 2015 3:13:32 PM Attachments:Derek C Denard.vcf image001.jpg Water Treatment Plant (WTP) Strategy.pdf flow NC0055221 Marion WTP.xls NCG590000.pdf Technical Bulletin NCG590000.pdf Mr. Carver, Thanks for contacting me about your draft permit. The “the two million gallon storage tanks” will be removed from the facility description for the final permit. It is understood that these units are part of the potable water distribution system and not part of the water or wastewater treatment system; therefore, not applicable to the NPDES permit. Flow average is based on the days that discharge occurs. In other words, the zero discharge days are not included in the average. For example if you discharge two days in a month with 0.600 and 0.100 MGD flows. Then the average is taken by dividing by the number of days discharge occurs (2 days) resulting in an average of 0.350 MGD for that month. For permitting purposes we use the maximum monthly average flow for the most recent 3 years. According to our strategy (see attached strategy page 6, Table 3.1: Monitoring requirements for Conventional WTP) facilities with flows ≥50,000 gpd are required to perform continuous (frequency), recording (sample type) flow measurements. Your facility had a maximum monthly average of 0.373 MGD (see attached spreadsheet). The final permit will require a continuous recording flow meter to be installed within 18 months of the effective date of the permit. Ammonia monitoring is not required for this draft permit because ammonia nitrogen/chloramines are not in use. However, Total Phosphorous and Total Nitrogen are required as part of our strategy (see page, Table 3.1) because this facility has a maximum monthly average >0.05 MGD. If you would like to be considered for the general permit in the future, I have attached a copy of general permit NCG59000 and the Technical Bulletin for your information. If you have any questions, please contact me. Sincerely, Derek E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. From: lcarver@marionnc.org [mailto:lcarver@marionnc.org] Sent: Wednesday, January 07, 2015 10:28 AM To: Denard, Derek Cc: Wiggs, Linda; Davidson, Landon Subject: permit modification Derek i have attached the response letter and other material to help show that the modifications we asked for should be valid requests. if you have any questions please let me know Thanks Larry Carver Technical Bulletin For General Permit NCG590000 Backwash wastewaters from Greensand and Conventional Water Treatment Plants NORTH CAROLINA DIVISION OF WATER RESOURCES August 1, 2014 Coverage Under This Permit The general permit covers new and existing Greensand Water Treatment Plants (WTPs) with point source discharges of backwash wastewaters from technologies designed for iron and/or manganese removal with and without the addition of chemical coagulants; and existing Conventional WTP wastewaters from water purification facilities using aluminum, iron, or polymer based coagulation agents with filter backwash, sedimentation basin washdown, and decant from water treatment facilities. Such discharges include wastewaters from water purification systems using: • Greensand (iron and/or manganese removal systems) as well as similar wastewaters from water purification activities such as sand filtration or calcite filtration systems. • Conventional Water Treatment (water purification facilities with filter backwash, sedimentation basin washdown, and decant from water treatment facilities). To be considered for coverage under this general permit, new Conventional WTPs proposing a point discharge to surface waters shall be covered under an individual permit for one permit cycle in order to demonstrate compliance with Water Quality Standards (WQSs) and limitations set forth in this general permit. Wastewater contaminated with pollutants other than those regulated under the effluent sheet(s) pertaining to their water purification processes are excluded from this general permit, and will require an individual NPDES permit to discharge to surface waters. Specifically, wastewaters containing arsenic, radioactive substances, significant quantities of toxic pollutants, and effluents demonstrating toxicity to aquatic life will be required to apply for an individual NPDES permit to discharge to surface waters Also, discharges to receiving waters classified as ORW or HQW are excluded from general permit coverage. Process wastewaters from Membrane treatment and Ion Exchange water treatment purification systems are not covered under this general permit even if used in combination with greensand and conventional WTP technologies. Key Permit Requirements  Description of Wastewater Treatment Systems: Conventional Water Treatment Plants perform solids settling either in alternating lagoons or through clarification followed by dechlorination, if necessary. Solids are routinely removed and disposed of via land application or incineration. Greensand backwash wastewaters sometimes require solids settling or particulate removal using sand filtration or sand bed irrigation followed by dechlorination, if necessary. Solids removal and disposal are performed as needed. Some small filtration systems have wastewaters that do not require wastewater treatment to meet permit limitations. Permittees’ should design wastewater treatment systems to handle peak flow volumes so enough detention time is allowed for solids settling and removal. It is the permittee’s responsibility to design a treatment system that will comply with water quality standards and permit limitations.  Greensand WTP, sand filtration, calcite filtration and effluent monitoring of parameters from similar water purification activities are specified in Part 1, section B. Two separate monitoring pages are included: B – (1) Greensand WTP discharges to freshwater, and B – (2) Greensand WTP discharges to saltwater.  Conventional WTP effluent monitoring of parameters is also specified in Part 1, section B. Two additional and separate monitoring pages are included: B – (3) Conventional WTP discharges to freshwater, and B – (4) Conventional WTP discharges to saltwater.  Electronic Reporting of Discharge Monitoring Reports is specified in Part 1, section C. All permittees covered under this general permit shall begin reporting discharge monitoring data electronically using the NC DWR’s Electronic Discharge Monitoring Report (eDMR) internet application. Temporary waivers can be acquired as specified in section C.  Whole Effluent Toxicity (WET) testing is specified in Part 1, section D, and applies to all Conventional WTPs. Two different types of WET tests, chronic and acute, are specified in Part I, Section D. - Chronic Toxicity Pass/Fail permit limits apply to: -Discharges to freshwater with an IWC* ≥ 0.25%, and -Discharges to saltwater with a modeled dilution Page | 2 Technical Bulletin for General Permit NCG590000 Acute Toxicity Pass/Fail permit limits apply to: -Discharges to freshwater with an IWC*< 0.25%, and -Discharges to saltwater with Tidal waters not modeled. *IWC means the Instream Wastewater Concentration and will be specified on the Permittees’ Certificate of Coverage.  All samples shall be collected before the effluent joins or is diluted by any other wastestream, water or substance. (Part II, Section D:1)  Proper operation and maintenance of the system to achieve compliance with the conditions of the permit. (Part II, Section C:2)  Solids, sludges, metals or other pollutants removed in the course of treatment shall be disposed properly to prevent materials from entering waters of the State. (Part II, Section C:6)  The permittee shall give notice to the Division of any planned physical alterations or additions to the system that could significantly increase the quantity of pollutants discharged or introduce new pollutants to the discharge. (Part II, Section E:2)  Any exceedances of the permit limits must be reported to the Division within 24 hours from the time the permittee becomes aware of the circumstances. (Part II, Section E:6) Frequently Asked Questions 1) Do I need to employ a certified wastewater treatment plant operator to manage and run the system? Conventional Water Treatment Plants require wastewater treatment systems to employ a PC-1 certified operator. Greensand Water Treatment Plant systems with no wastewater treatment (solids settling or removal) do not require a certified operator. However, if wastewater treatment is necessary at the Greensand WTP than contact DWR/Wastewater Operator Certification & Training staff to see if an operator is required. The Division’s Wastewater Operator Certification & Training Unit can be contacted for detailed information at the following link: http://portal.ncdenr.org/web/wq/admin/tacu 2) Where do I find my stream classification? The stream classification, i.e. C, WS (Water Supply), SC, etc. can be found in the Certificate of Coverage (CoC). Classes C, B, and WS are all considered freshwater. Classes SC, SB, and SA are all considered saltwater. If you are unsure of your stream classification, you can contact the NPDES Staff at the phone number listed below or by going to the following link: http://portal.ncdenr.org/web/wq/swp/ps/npdes/contact info 3) How do I know if my stream is Nutrient Sensitive Waters (NSW), Trout Waters (Tr), ORW, or HQW? In addition to your stream classification, some waters have supplemental classifications such as NSW, Tr, etc. The supplemental classifications are listed next to the stream classification which can be found in the Certificate of Coverage or the Supplement to Permit Cover sheet of an individual permit. For example: C- NSW. Note, some streams may have several supplemental stream classifications. 4) How do I determine what type of WET test I should be performing and at what effluent concentration? The Supplement issued with the Certificate of Coverage (CoC) with this general permit will list the Whole Effluent Toxicity test to be performed by your facility and at what effluent concentration. The test to be performed will either be an Acute Toxicity Test at 90% effluent (Part1, Section D. (3)) or a Chronic Toxicity Test (Part1, Section D. (2)) at a specified effluent concentration listed in the CoC Supplement. Greensand WTPs do not have to perform WET tests. Note that the maximum effluent default value to perform WET tests is 90%. So, if your facility’s IWC is 100%, perform your WET tests using an effluent concentration of 90%. If you are unsure of your IWC and WET testing requirements, you can contact the NPDES Unit. 5) Does a certified lab need to be used to analyze samples? Yes, a North Carolina certified lab must be used to perform analytical testing. A list of certified labs is available from the Division and on the DWR website. 6) What If I Sell My Business Or The Name of My Business Changes? The Division views changes of name or ownership as a minor permit modification. Name and ownership changes require you to complete a Name/Ownership Change Form. The forms are available at the following website: http://portal.ncdenr.org/web/wq/swp/ps/npdes/genera lpermits 7) How do I apply for coverage, renew coverage, or rescind coverage under this General Permit. This General Permit expires on July 31, 2019. Approximately 180 days prior to the expiration of the General Permit, existing permittees will receive a renewal notice in the mail from the Division and are required to submit a completed renewal Notice of Intent (NOI) application form. Page | 3 Technical Bulletin for General Permit NCG590000 New applicants are required to submit a new application form and must submit a completed NOI and the applicable permit fees. If an existing permittee plans to eliminate the discharge from the water purification system and no longer requires coverage under this General Permit, the permittee will need to request rescission of permit coverage from the NPDES Permitting Unit by letter. 8) Do I need to submit the monitoring results to the Division? Yes. All permittees covered under this general permit shall begin reporting discharge monitoring data electronically using NC DWR’s Electronic Discharge Monitoring Report (eDMR) internet application. Information on eDMR and application for a temporary waiver from the NPDES electronic reporting requirements is found on the following web page: http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr All monitoring results shall be kept on site for three years. The Division may request these reports for review at any time. (Part II, D.8). Note, per Part II, E.6, violations of any permit limitation must be reported within 24 hours from the time the permittee becomes aware of the circumstances. 9) Will routine compliance inspections occur under this General Permit? Regional staffs inspect facilities covered under a general permit and non-major individually permitted facilities as time and man-power allow for in that region. 10) Can all Greensand and Conventional WTPs apply for a General permit? New applicants for a proposed Conventional WTP and any WTP discharging to HQW or ORW waters shall not be covered under this general permit. In addition, WTPs’ failing WET tests will be asked to maintain an individual NPDES permit and initiate a program to address and solve aquatic toxicity problems. Individual WTP permittees with special conditions or limitations not contained in this general permit may be required to maintain an individual permit. 11) Does the WTP need to obtain an ATC permit prior to constructing wastewater treatment facilities? No. Session Law 2011-394, which became effective July 1, 2011, no longer requires an ATC permit for construction work at drinking water treatment facilities with an NPDES permit. It is the permittee’s responsibility to design a treatment system that complies with Design Criteria in NC Administrative Code 15A 02T .0505 and that will meet NC water quality standards and permit limitations contained in this permit. 12) Can facilities receive Notices of Violation if a limitation contained in this General Permit is violated? Yes, as with individual permits, violations of this permit can result in the issuance of NOVs, civil penalties, and enforcement proceedings. It is likely the Permittee will be requested to apply for an individual permit or Special Order of Consent if improvements need to be made at the facility to comply with permit limits. Contact Information For additional information on NPDES wastewater permitting and compliance, please contact us at: N.C. Division of Water Resources NPDES Permitting Unit 1617 Mail Service Center Raleigh, N.C. 27699-1617 Phone: (919) 807-6300 Fax: (919) 807-6489 You may also contact the local DWR Regional Office at:  Asheville: (828) 296-4500  Fayetteville: (910) 433-3300  Mooresville: (704) 663-1699  Raleigh: (919) 791-4200  Washington: (252) 946-6481  Wilmington: (910) 796-7215  Winston-Salem: (336) 771-5000 The NPDES Permitting Unit can be accessed on the internet at: http://portal.ncdenr.org/web/wq/swp/ps/npdes. Copies of the General Wastewater Permits, technical bulletins, application fees, guidance documents, and miscellaneous forms may be downloaded from this web site. Another source of information on regulatory requirements for all media is the DENR Customer Service Center, which can be reached at 1-919-707-9000. NCDENR Division of Water Resources Water Sample Collection & Submittal Form Central Laboratory, Water Sciences Section Tag ID TB _ r _ --"J" - AC30249 ___ ' Location �. Description: ,, Marion WTP TB Location _ , Coder - ' '� Areadia:Rond%f=iowestrearnzelayton-Crk --1 7 fj-, �� - Date Received: ! % G , County: i McDowell = Collector: " Lwiggs Priority: Water Matrix: Surface Ground , Location Type: M--: �--- Lake Supply Influent Trip Blank Time Received: -� ( Z DWR Region: (based on county) ARO DWR Office: ',ARO (oragency'name), ❑Ambient ❑ Routine ❑River/Stream Estuary ❑Canal Stormwater❑ ❑Monitoring Well ❑Water 1 'Received By: `,`I f6( ' 1 River Basin: CTB ' I Date: 16/22/2016 ` ' 1 HState Courier , Delivery'_ 1 Method Hand Delivery ❑Other Compliance) p ❑ COC ❑ Emergency ❑QA Visit ID (optional): ,Time:- I / Waste ❑ Blank ❑Solution Effluent ❑Field Blank ❑Filter Blank ❑Other• Chlorine ❑De -chlorinated in Field Sample Method:. Grab UComposite - Temperature on 10 ,Arrival (°C): -.I + ,• t a ❑ Other Dissolved analysis Enter "DIS" ❑ Filtered in Field in check -boxes for parameters Sample Depth:. i Collector's Comments:,1 /124� Mlcrobi.ology.Parameters: _ MBAS (surfactants) mg/L Metals Parameters: ' _ Tin (Sn) µg/L Acidity, as CaCO3, to pH 4 5/8 3 mg/L Oil and Grease, HEM, Total Recoverable mg/L Aluminum (Al) pg/L Titanium (Ti) µg/L Alkalinity, as CaCO3, to pH 4 5/8 3 mg/L Phenols, Total Recoverable pg/L Antimony (Sb) pg/L Vanadium (V) µg/L BOD Biochemical Oxygen Demand, 5-day mg/L Residue Total (Total Solids) mg/L Arsenic (As) pg/L Zinc (Zn) µg/L cBOD Carbonaceous BOD, 5-day mg/L Residue Volatile/Fixed, Total mg/L Barium (Ba) pg/L Coliform Fecal MF /100m1 Residue Suspended (Suspended Solids) mg/L Beryllium (Be) pg/L Boron (B), Total µg/L Coliform Total MF /10om1 Residue Volatile/Fixed, Suspended mg/L Cadmium (Cd) pg/L Mercury 1631, low-level ng/L Coliform Tube Fecal /100m1 TDS - Total Dissolved Solids mg/L Calcium (Ca) mg/L Coliform Tube Total /100m1 Silica mg/L Chromium (Cr), Total pg/L Organics Parameters: Specific Conductance, at 25 °C umhos/cm Sulfide mg/L Cobalt (Co) pg/L Acid Herbicides TOC - Total Organic Carbon mg/L Tannin & Lignin mg/L Copper (Cu) pg/L Organochlonne Pesticides Turbidity NTU Iron (Fe) pg/L Organonitrogen Pesticides ' Other Parameters: , , Lead (Pb) pg/L Organophosphorus Pesticides - Wet Chemistry Parameters: , pH s u Lithium (Li) pg/L PCBs (polychlorinated biphenyls) Bromide mg/L Hardness, Total as CaCO3 - by titration mg/L Magnesium (Mg) mg/L - Chloride mg/L Manganese (Mn) pg/L Semi -Volatile Organics (BNAs) Fluoride mg/L Mercury (Hg) pg/L TPH Diesel Range Sulfate mg/L - Nutrients Parameters: Molybdenum (Mo) pg/L Chlorophyll a pg/L X Ammonia as N (NH3-N) mg/L Nickel (NI) pg/L TB Volatile Organics (VOA) Color ADMI c u X Nitrate -Nitrite as N (NO3+NO2-N) mg/L Potassium (K) mg/L MTBE/BTEX Color Platinum Cobalt c u X Total Kjeldahl Nitrogen as N (TKN) mg/L Selenium (Se) pg/L TPH Gasoline Range COD Chemical Oxygen Demand mg/L X Total Phosphorus as P (TP) mg/L Silver (Ag) pg/L Cyanide, Total mg/L X Nitrite as N (NO2-N) mg/L Sodium (Na) mg/L Biological: - Formaldehyde mg/L Nitrate as N (NO3-N calculated) mg/L Strontium (Sr) pg/L Phytoplankton / Algae Hexavalent Chromium (Cr6+) mg/L Orthophosphate as P (PO4) mg/L Thallium (TI) pg/L LAB COMMENTS : I field Parameters: Water Temp (°C)• pH(su) Dissolved Oxygen (ppm) Conductivity (pmhos/cm) Salinity (ppt) Revision 1/09/2015 AC30249 North Carolina Division of Water Resources Water Sciences Section Laboratory Results Loc. Descr.: MARION WTP TP County: MCDOWELL Collector: L WIGGS VisitlD TRIP BLANK Region: ARO Report To ARO Location ID: NC0055221 River Basin CTB Collect Date: 06/22/2016 Priority COMPLIANCE Emergency Collect Time: 10:30 Sample Matrix: Blankwater COC Yes/No Sample Depth Loc. Type: TRIP BLANK Final Report Sample ID: AC30249 PO Number # Date Received: 06/23/2016 Time Received: 08_32 Labworks Login ID TASCENZO1 Delivery Method NC Courier Final Report Date: 7/1/16 Report Print Date: 07/01/2016 If this report is labeled preliminary report, the results have not been validated. Do not use for Regulatory purposes. CAS # Analyte Name Sample temperature at receipt by lab Result/ PQL Qualifier LAB 5.0 Units °C Method Analysis Reference Date Validated by 6/23/16 MSWIFT 106-93-4 (EDB)1,2-Dibromoethane VOL Volatile Organics in liquid 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 630-20-6 1,1,1,2-Tetrachloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 71-55-6 1,1,1-Trichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 79-34-5 1,1,2,2-Tetrachloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 79-00-5 1,1,2-Trichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-34-3 1,1-Dichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-35-4 1,1-Dichloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 563-58-6 1,1-Dichloropropene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 87-61-6 1,2,3-Trichlorobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 96-18-4 1,2,3-Trichooropropane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 120-82-1 1,2,4-Trichlorobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-63-6 1,2,4-Trimethylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 96-12-8 1,2-Dibromo-3-Chloropropane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 107-06-2 1,2-Dichloroethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 78-87-5 1,2-Dichloropropane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-67-8 1,3,5-Trimethylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 142-28-9 1,3-Dichloropropane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 594-20-7 2,2-Dichloropropane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-49-8 2-Chlorotoluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 106-43-4 4-Chlorotoluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 71-43-2 Benzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-86-1 Bromobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 74-97-5 Bromochloromethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-27-4 Bromodichloromethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-25-2 Bromoform 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 74-83-9 Bromomethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 56-23-5 Carbon Tetrachloride 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-90-7 Chlorobenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-00-3 Chloroethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 67-66-3 Chloroform 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 74-87-3 Chloromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 1 of 2 NC /WR. Laboratory Section Resu[ts/Sample Comments/Qualifier Definitions Sample ID: AC30249 CAS # 156-59-2 Analyte Name cis-1,2-Dichloroethene PQL 1.0 Result/ Qualifier Not detected Units pg/L Method Reference EPA624/8260C Analysis Date Validated by 6/23/16 CJOHNSON 10061-01-5 cis-1,3-Dichloropropene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 124-48-1 Dibromochloromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 74-95-3 Dibromomethane 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-71-8 Dichlorodifluoromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 100-41-4 Ethylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 87-68-3 Hexachlorobutadiene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 98-82-8 Isopropylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-38-3 m,p-Xylene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 541-73-1 m-Dichlorobenzene (1,3) 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 1634-04-4 Methyl Tert-Butyl Ether 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-09-2 Methylene Chloride 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 91-20-3 Naphthalene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 104-51-8 n-Butylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 103-65-1 n-Propylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-50-1 o-Dichlorobenzene (1,2) 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 95-47-6 o-Xylene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 106-46-7 p-Dichlorobenzene (1,4) 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 99-87-6 p-Isopropyltoluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 135-98-8 sec-Butylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 100-42-5 Styrene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 98-06-6 tert-Butylbenzene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 127-18-4 Tetrachloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 108-88-3 Toluene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 156-60-5 trans-1,2-Dichloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 10061-02-6 trans-1,3-Dichloropropene 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 79-01-6 Trichloroethene 1.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-69-4 Trichlorofluoromethane 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON 75-01-4 Vinyl Chloride 2.0 Not detected pg/L EPA624/8260C 6/23/16 CJOHNSON WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 (919) 733-3908 "Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL. Page 2 of 2 North Carolina Department of Environment and Natural Resources Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Dee Freeman Governor Director Secretary Memorandum To: Jeff Poupartr,-- Through: Tom Belnick - From: Julie Grzyb Date: J 10114/2009 Re: Changes to Water Treatment Plant Strategy (October 2009) I. Flow Limit and Monitoring • Remove Flow Limit on all WTPs Unlike Wastewater treatment plants, flow data has not been used as much in the design of backwashing treatment units. Also, flow data from Discharge Monitoring Reports will be available to perform Reasonable Potential Analyses, Finally, WTP strategy still precludes new or expanding RO/IE plants to freshwater streams. • Require Continuous flow monitoring for Conventional and RO facilities discharging 50,000 gallons per day. (previous policy > 10,000 gpd) Facilities discharging less than 50,000 gpd and intermittent dischargers require instantaneous flow measurements along with the duration. Many facilities with wastewaters less than 50,000 gpd discharge to POTWs or are considering discharging to a POTW. The WTP strategy which includes additional testing by the Permittees is facilitating such decisions and removing, the necessity for smaller facilities to purchase recording equipment seems prudent at this time, Note: lon Exchange and Green Sand WTPs require instantaneous flow measurements along with the duration, The monitoring frequency for flow should be as frequent as the minimum frequency of monitoring for any parameter listed, II. Calcium and Magnesium (Conventional WTPs, not parameters of concern in other WTPs) • Remove monitoring for calcium and magnesium from the Conventional WTP effluent page. There is no Water Quality Standard for Calcium or Magnesium. As a result, there is no limit to compare the data obtained from monitoring these parameters. HI. Changes to toxics monitoring: • Conventional WTP Effluent page: To make permitting less complicated, monitoring for fluoride, zinc, copper and iron were changed to quarterly sampling to align with quarterly sampling of aluminum, manganese and toxicity testing. Previously it was monthly if discharge < 0.5 MGD and 2/month if discharge > 0.5 MGD, • Green Sand WTP Effluent page: To make permitting less complicated, monitoring for fluoride, zinc, manganese and iron were changed to quarterly sampling. Previously it was monthly if discharge < 0.5 MGD and 2/nnonth if discharge > 0,5 MGD, .1617 Mail Secvice Center, Raleigh, Not; Carolina 27699-1617 Location:512 N. Salisbury St. Raleigh, North Carolina 2760 , Phone: 919-8074300 k FAX 9.19807-6492 Customer Service: 1-877-623-6748 Internet wmf.nowaterqualily,org An Equa1 Opportunity Affirmalive Action Empk,yet one Nth Carolina aturally Ion Exchange WTP Effluent page: To make permitting less complicated, monitoring for copper, chloride, iron, manganese, lead, zinc, ammonia nitrogen and fluoride were changed to monthly sampling. Previously it was monthly if discharge < 0.5 MGD and 2/month if discharge > 0.5 MGD, Membrane WTP Effluent page: To make permitting less complicated, monitoring for arsenic, copper, chloride, iron, fluoride, zinc, and ammonia nitrogen were changed to monthly sampling. Previously it was monthly if discharge < 0.5 MGD and 2/month if discharge > 0.5 MGD. Quarterly and Monthly samples will supply adequate data to evaluate toxicity test results and to perform RPAs. IV. Turbidity Added turbidity monitoring to all WTP permits to address US EPA Region IV memo dated 2-25-09. Permittees discharging to impaired streams for turbidity will receive a turbidity limitation. 1617 Mail Service Center. Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone' 919-807-6300 FAX: 919-807-6492 Customer Seivice: 1-877-623-6748 Internet www.ncwaterquailty or,g An Equal Opportunity Affirmative Acton Employer One NorthCar ,;;Vaturally NPDES PERMITTING STRATEGIES FOR POTABLE WATER TREATMENT PLANTS October 2009 Background In 1992, the Division of Water Quality (Division) implemented a general water treatment plant (WTP) permitting strategy that was intended to apply to all types of WTPs. However, after further research and discussion, it was agreed that different technologies in water treatment yield very different pollutants of concern and impacts on the environment. As a result, four permitting strategies were developed specifically geared towards certain water treatment processes. This document summarizes the permit application and pernlit development procedure for WTPs and serves as a reference tool for permit writers and permittees. Other available resources include Assessment and Recomtnendations for Water Treatment Plant Permitting: Findings of the Water Treatment Plant Workgroup, and the Conventional WTP Report, both of which further explain the collaborative interdepartmental effort and data study that went into the development of these permitting approaches. L PERMIT APPLICATION PROCESS An NPDES permit application is available on the NPDES website. The application is titled Standard Form C- WTP and can be used for all WTPs, regardless of technology. This application differs from those used in the past in that new applicants are required to submit a complete source water analysis and an engineering alternatives analysis that fully explores all feasible alternatives to a surface water discharge. New facilities using ion exchange (1E) or reverse osmosis (RO) technology are also required to perform a water quality model. New IE (includes water softeners) and RO discharges will not be permitted in freshwater unless it is demonstrated that the environmental impact would be minimal. Based on their potential impacts to aquatic life all new IE and ROfacilities, and conventional WTPs with a discharge of over 0.5 MGD, must also initiate a tiered notification process that will serve to alert other divisions and agencies through the Customer Service Center (CSC). The notification process, as illustrated in Figure 1, is initiated when a new or expanding WTP project is first presented to a permitting agency or the CSC. When an agency is first contacted, it becomes that agency's responsibility to direct the applicant to the CSC and notify a CSC permit coordinator. Figure I — Water Treatment Plant Notification Flowchart Water Treatment Plant Notification Process Potential Applicant (pienn,rigides.gri pria5ej__- ±,VO FDELI LLvn formal applica DVV 0 DLR 1 Permitting Agency (DEH, DWQ, OVVR, OLR, DCMI Permit Coordinator Customer Service Center Tier I Notification 1_1 I ACOE 1. DCM Permitting Agency (DEHL DWQ, DWR, OLR, DCM Permit Coordinator 1 Camorner Se rvlce Cenler NIMES Acronym Key: DWQ - Div of Water Quality DEN - Ole of Environmental Health DIR - Div of Land Resources DWR - Div of Water Resources ACQE - US Arrny Corps of Engineers DCM - Div of Coasial Management pyeZiv of Ma rine i WRC - NC Wildlife Resources Commission 1.0d1SielkS,,,Feish and NHP NC Natural Heritage Program NMFS - National Marine Fisheries Service SEPA L Slate Environmental Policy Act Tier II Notification DEH DLR DOI FL ACOE DCM DMF NHP Nolifi ation via NMFS j SEPA Process Permitting Agencies commentiReview Agencies -1- Once the CSC has been contacted they will distribute a notice, via email, summarizing the proposed project to the appropriate agency contacts. Tier I notification should begin for new or expanding WTPs upon initial contact by the applicant, regardless of project stage. Following Tier I notification, each agency will determine its level of involvement (i.e. requests for additional details, participation in meeting, etc.). Tier II notification should begin when a significant development in the process has occurred, such as when a permit application has been filed or an environmental document has been submitted. Throughout the process, CSC will coordinate communication with the agencies and the applicant. Additional notifications may be necessary to update agency representatives of important developments or to coordinate meetings. Again, these various tiers of notification will only include a summary of developments. Agency involvement is discretionary. The notification process concludes once all applicable perniits are issued. As previously mentioned, this process should only apply to new IE/RO facilities and conventional plants with a predicted discharge of greater than or equal to 0.5 MGD. Copies of proposed draft permits for these facilities should also be forwarded to the US Fish and Wildlife Service and the Wildlife Resource Commission. No inter -agency notification will be required for greensand filter systems. . PERMIT DEVELOPMENT FOR MEMBRANE AND ION EXCHANGE WA TER TREATMENT PLANTS 2_ 1 Background In 2002, the Division established an inter -departmental Workgroup, which then led to the development of a technical subcommittee tasked to study the impacts of membrane and sodium cycle cationic ion exchange WTPs on receiving waters. The subcommittee first identified potential environmental concerns and then conducted an analytical study, data review, and analysis of several existing WTPs in North Carolina. Foremost amongst water quality concerns were the total residual chlorine (TRC) and chloride levels present in discharges and the potential toxicity of these pollutants on the receiving stream. Based on the results of the analytical study, the following permitting strategy has been adopted for all WTPs using membrane and ion exchange technologies. Portions of this strategy pertaining to the use of "membrane- technologies will primarily involve reverse osmosis (RO), nanofiltration (NF), microfiltration (MF), and ultrafiltration (UF) processes for the treatment of gr, oundwater. Though less common, electrodialysis/electrodialysis reversal (ED/EDR) processes also use membrane technology and should be guided by the membrane permitting strategy. Other portions of this document pertain to WTPs using ion exchange (IE) as a primary or secondary component of the treatment system. It is important to determine whether any part of the permittee's water treatment process uses an ion exchange system. If so, their permit may incorporate relevant components of this strategy, however the permit writer should use discretion when considering relative volumes of wastewater components. These technologies (both membrane and 1E) are of particular concern because they concentrate dissolved solids, generating highly concentrated wastestreams. The wastes can have a toxic effect on the receiving water, particularly if the system is freshwater in nature. For this reason, new discharges from membrane and IE WTPs should not be permitted into freshwaters unless it can be demonstrated that the environmental impacts would be minimal. All new IE/RO dischargers must perform dilution modeling. 2.2 Pollutants of Concern Based on a review of actual data from existing IE and RO facilities, iron, copper, chloride and zinc showed reasonable potential to exist in concentrations that may exceed water quality standards. In addition, arsenic and fluoride seem to pose a particular concern for membrane WTPs, while manganese and lead were typically found in significant concentrations in IE process effluent. Chlorine was determined to be a parameter of concern for IE's in general, however it is important to note that TRC could potentially be problematic for any facility that chlorinates its finished water. Any treatment prior to discharge (i.e. feed disinfection, pH adjustment, antiscalant additives) should be considered when determining permit limits. The only additives that should be introduced prior to separation of product water and reject stream are acids (to reduce deposits) and corrosion inhibitors. Any other additives might introduce additional pollutants of concern. Facilities must obtain approval and request a permit modification for any significant change that would alter the characteristics or nature of the discharge. 'fables 1 and 2 provide sample effluent limits and summarize the minimum recommended monitoring requirements for membrane and IE WTPs, -2- Table 2.1: MonitoringRe uirements for Membrane WTPs The monitoring requirements included below identify various pollutants of concern including conventional parameters, nutrients, and toxicants. A brief rationale for the inclusion of these contaminants can be found in Appendix A. Other toxicants were not included because they were either not detected or rarely detected in the effluent data surveyed. However, if a pollutant specific problem is detected in the receiving stream, effluent, or source water then a monitoring requirement may be added for that parameter, Likewise, if data indicate that a pollutant is not present in the facility's discharge, that parameter may be dropped from the requirements. Limits should be added if the facility shows reasonable potential to exceed water quality standards for toxicants. New facilities should monitor for pollutants of concerns regardless of whether or not there is a wrater quality standard. Monitoring requirements can be re-evaluated during subsequent renewals. EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS 'Monthly Average Weekly Average Daily Maximum 'Measurement Frequency Sample Type Sample Location" Elow2 Continuous Recording E Temperature3 See Table 5J Grab E,U,D Dissolved Oxygen3 See Table 5.1 Grab E,U,D Salinity See Table 5.1 Grab E,U,D Conductivity See Table 5.1 Grab E,U,D pH Freshwater: Saltwater: 6.0 - 9.0 6.8 - 8.5 s.u. s.u. See Table 5.1 Grab E,U,D Total Residual Chlorine' Freshwater: Saltwater: 17-28 (ig/L 13 ug/L See Table 5.1 Grab E Total Dissolved Solids See Table 5.1 Grab Turbidity5 See Table 5.1 Grab E Total Arsenic Limit based on potential Month/ Grab E Total Copper Limit based on potential Monthly Grab E Total Chloride Limit based on potential Monthly Grab E Total Iron Limit based on potential Monthly Grab E Total Fluoride Limit based on potential Monthly Grab E Total Zinc Limit based on potential Monthly Grab E Ammonia Nitrogen Limit based on potential Monthly Grab E Total Nitrogen (TN)6 Quarterly Grab E Total Phosphorus (TP)b Quarterly Grab E Whole Effluent Toxicity Monitoring' Quarterly Grab E Notes to permit writers: 1. Sampling locations: E= Effluent, U= Upstream of discharge location, D= Downstream of discharge location. 2. Continuous monitoring is required for facilities discharging > 50,000 gpd. Instantaneous measurement or estimates are allowed if the permitted flow is less than 50,000 gpd, Duration of discharge should be noted in log books. 3. The facility may petition to have DO and temperature monitoring removed from the permit after monitoring for 1 permit cycle. 4. Footnote for permit: Limit and monitor only if the facility adds chlorine or chlorine derivatives to water that is eventually discharged. The Division shall consider all effluent TRC values reported below 50 ugil to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ug/l. 5. If the receiving stream is impaired for turbidity a daily maximum limit should be given. See Appendix A for limit and footnote. 6. Facilities under 0.05 MGD should only monitor for nutrients if discharging into a NSW, 7. See Table 5.2 for WET Test Requirements and Appendix B for monitoring language. _3_ Table 2.2: Monitoring Requirements for Ion Exchange WTPs The monitoring requirements included below identify various pollutants of concern including conventional parameters, nutrients, and toxicants. A brief rationale for the inclusion of these contaminants can be found in Appendix A. Other toxicants were not included because they were either not detected or rarely detected in the effluent data surveyed. However, if a pollutant specific problem is detected in the receiving stream, effluent, or source water then a monitoring requirement may be added for that parameter. Likewise, if data indicate that a pollutant is not present in the facility's discharge, that parameter may be dropped from the requirements. Limits should be added if the facility shows reasonable potential to exceed water quality standards for toxicants. New facilities should monitor for pollutants of concerns regardless of whether or not there is a water quality standard. Monitoring requirements can be re-evaluated during subsequent renewals. EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type' Sample Location' Flow See footnote ' n, I stantaneous or Estimate E Temperature' See Table 5.1 Grab E,U,D Salinity See Table 5.1 Composite E,U,D Conductivity See Table 5.1 Composite E,U,D pH Freshwater: 6.0 — 9.0 s.u. Saltwater: 6.8 — b.5 s.u. See Table 5.1 Grab E,U,D Dissolved Oxygen' See Table 5.1 Grab E,U,D Total Dissolved Solids See Table 5.1 Composite E Total Suspended Solids5 30 mg/L 45 mg/L See Table 5.1 Composite E Total Residual Chlorine Freshwater: 17 -28 ug/L Saltwater: 13 1.1g/L See Table 5.1 Grab E Turbidity' See Table 5.1 Grab E Total Copper Limit based on potential Monthly Composite E Total Chloride Limit based on potential Monthly Composite E Total Iron Limit based on potential Monthly Composite E Total Manganese Limit based on potential Monthly Composite E Total Lead Limit based on potential Monthly Composite E Total Zinc Limit based on potential Monthly Composite E Ammonia Nitrogen Limit based on potential Monthly Composite E Fluoride Limit based on potential Monthly Composite E Total Nitrogen (TN)9 QuarterlyComposite E Total Phosphorus (TP)9 Quarterly Composite E Whole Effluent Toxicity Monitoringi° Quarterly Composite E Notes to permit writers: 1. An exception to the composite sampling is provided by 15A NCAC 2B.0505 (C)„ which states that facilities with design flows under 30,000 gallons per day may use grab samples to characterize their effluent, 2. Sampling locations: E = Effluent, U = Upstream of discharge location, D = Downstream of discharge location. 3. For intermittent discharges, instantaneous flow monitoring is required and the duration of the discharge must be reported. The monitoring frequency for flow should be as frequent as the minimum frequency of monitoring for any parameter listed. 4. The facility may petition to have DO and temperature monitoring removed from the permit after monitoring for 1 permit cycle. 5. For existing plants, TSS limits may need to be phased in over a period of time to allow for the construction of new treatment facilities. 6. Footnote for permit: Limit and monitor only if the facility adds chlorine or chlorine derivatives to water that is eventually discharged. The Division shall consider all effluent TRC values reported below. 50 ugll to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ugil. 7. If the receiving stream is impaired for turbidity a daily maximum limit should be given. See Appendix A for limit and footnote. S. Fluoride monitoring should apply only if the facility backwashes with fluoridated, finished water. 9. Facilities under 0.05 MGD should only monitor for nutrients if discharging into a NSW. Monitoring frequency should align with basin -specific requirements if those are more stringent. 10, See section on WET testing for details (Table 5.2). -4- 2.3 Instream Monitoring Both RO and IE WTPs will require instream monitoring. This requirement may be waived for facilities discharging to zero flow streams. For discharges where no water quality model was performed, the facility should monitor 50 feet upstream and at least 100 feet downstream of the outfall. For discharges where a model was performed, locations should be determined on a case -by -case basis, but should take in consideration the size and shape of the effluent plume. HI. PERMIT DEVELOPMENT FOR CONVENTIONAL WATER TREATMENT PLANTS 3.1 Background Following the completion of the iE!RO report, a second workgroup was formed whose objectives dealt exclusively with concerns associated with the discharge of filter backwash from conventional treatment processes. This report summarizes NPDES permitting strategy recommendations for conventional water treatment plants based upon chemical and physical data from various facilities around North Carolina. The assessment and strategy detailed here applies only to those facilities using surface water sources and the referenced technologies. Most of the state of North Carolina (west of 1-95) uses surface water as a drinking water source. It is generally recognized that the water quality issues associated with surface water are those relating to particulate matter, microbiological content, color, taste and odor. Conventional treatment processes are designed to address these water quality issues. A conventional treatment process is described by the American Water Works Association as including coagulation, flocculation and sedimentation, usually followed by filtration and disinfection. 3.2 Pollutants of Concern Aluminum, calcium, magnesium, and manganese were detected effluent data from the five conventional WTPs used to supply data for this report. All five facilities had high maximum predicted concentrations for these parameters, therefore they are considered to be pollutants of concern and should be monitored. However, after further consideration monitoring for calcium and magnesium was removed since there are currently no water quality standards for these parameters in North Carolina. Zinc should be monitored if a perrnittee uses zinc orthophosphate as a corrosion inhibitor. In addition to pH, flow, and total residual chlorine, which will be limited, the permit writer may need to determine the necessity of a limit for some other parameter of concern that may have been identified in the application. DWQ will perform a reasonable potential analysis (RPA) on any available data to determine the need for monitoring or limits. For existing facilities collecting toxicant data, the RPA would employ these data. The reasonable potential procedure may also be used as a tool for analyzing the source water of proposed water treatment plants. Table 3 provides sample effluent limits and summarizes the minimum recommended monitoring requirements for conventional WTPs. - 5 - Table 3.1: Monitoring Requirements For Conventional WTPs The monitoring requirements included below identify various pollutants of concern including conventional parameters, nutrients, and toxicants. A brief rationale for the inclusion of these contaminants can be found in Appendix A. Other toxicants were not included because they were either not detected or rarely detected in the effluent data surveyed. However, if a pollutant specific problem is detected in the receiving stream, effluent, or source water then a monitoring requirement may be added for that parameter. Likewise, if data indicate that a pollutant is not present in the facility's discharge, that parameter may be dropped from the requirements. Limits should be added if the facility shows reasonable potential to exceed water quality standards for toxicants. New facilities should monitor for pollutants of concerns regardless of whether or not there is a water quality standard. Monitoring requirements can be re-evaluated during subsequent renewals. EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow' Continuous ' Recording ' Effluent TSS 30 mg,/L, 45 mg/L See footnote3 Grab Effluent pH Freshwater: 6.0 — 9.0 s.u. Saltwater: 6.8 — 8.5 s.u. See footnote3 Grab Effluent Total Residual Chlorine= Freshwaters: 17- 28 tigil, Saltwater: 13 pg/L See footnote Grab Effluent Turbidity' See footnote3 Grab Effluent Aluminum Limit based on potential Quarterly'') Grab Effluent Total Iron Limit based on potential Quarterlym Grab Effluent Total Copper Limit based on potential Quarterly" Grab Effluent Manganese Limit based on potential Quarterly'° Grab Effluent Fluoride 5 Limit based on potential Quarterly" Grab Effluent Total Zinc ' Limit based on potential Quarterly" Grab Effluent Ammonia Nitrogen' Quarterly Grab Effluent Total Phosphorus (TP)8 Quarterly Grab Effluent Total Nitrogen (TN)8 Quarterly Grab Effluent Whole Effluent Toxicity Monitoring9 Quarterly Grab Effluent Notes to permit writers: 1. Continuous discharges > 50,000 gpd are required to perform continuous (frequency), recording (sample type) flow measurements. For intermittent discharges, instantaneous flow monitoring is required and the duration of the discharge must be reported. The monitoring frequency for flow should be the same as the most frequently monitored parameter listed. Instantaneous measurement or estimates are allowed if the permitted flow is less than 50,000 gpd. 2. Footnote for permit: Limit and monitor only if the facility adds chlorine or chlorine derivatives to water that is eventually discharged. The Division shall consider all effluent TRC values reported below 50 ug/I to be in compliance with the pennit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ug/1. 3. Monitor 2/month if discharge is < 0.5 MGD and monitor weekly if discharge is >0.5 MGD, 4. If the receiving stream is impaired for turbidity a daily maximum limit should be given. See Appendix A for lirnit and footnote. 5. Fluoride should be monitored if the Permittee backwashes with fluoridated finished water. 6. Zinc should be monitored if the Perminee adds zinc orthophosphate as a corrosion inhibitor prior to backwashing. 7. Ammonia Nitrogen should be monitored if the Permittee uses choramines (adds ammonia to chlorinated water) for secondary disinfection prior to backwashing. S. Facilities under 0.05 MGD should only monitor for nutrients if discharging into a NSW. 9. See Table 5.2 for WET Test Requirements and Appendix B for monitoring language. 10. Parameter should be monitored in conjunction with toxicity test. -6- IV. PERMIT DEVELOPMENT FOR GREENSAND WA TER TREATMENT PLANTS 4.1 Background The following permitting strategy applies to new and existing water treatment plants using greensand filtration to generate potable water from groundwater. This categorization would also include many community well systems, "iron filters", and "manganese filters- as long as they do not backwash filters with a sodium solution. The permit writer should contact the facility to verify that there is not a briny discharge. This permitting strategy does not apply to any other kind of cationic exchange unit used in water treatment. If any portion of the water treatment process includes an ion exchange/water softener unit, then the RO-IE Permitting Strategy will apply as well. Typically, a greensand filtration unit is preceded by the use of an aeration tower along with potassium permanganate to oxidize dissolved iron in the ground water. The particulate ferric hydroxide (and some minor quantities of soluble ferrous material) is then removed via filtration through a manganese based greensand media. Greensand is a proprietary material that does not require sodium cycle regeneration, only backwash with finished (potable) water. Since the discharge from such a facility is not as saline as that from a sodium cycle cationic exchange unit, this may be considered a more eiwirorunentally friendly technology for the treatment of groundwater. For that reason, unlike other types of ion exchange systems, non -discharge options are sometimes an alternative and should be explored for new permits. Filter backwash water is usually collected in a settling basin, and the supernatant is then discharged to surface waters or a regional treatment works. 4.2 Pollutants of Concern Typical chemical additives to such treatment systems are an anti-scalant (such as zinc orthophosphate), fluoride, chlorine and potassium permanganate. Table 4. Monitoring Requirements For Greensand FVTPs The monitoring requirements included below identify various pollutants of concern including conventional parameters, nutrients, and toxicants. A brief rationale for the inclusion of these contaminants can be found in Appendix A. Other toxicants were not included because they were either not detected or rarely detected in the effluent data surveyed. However, if a pollutant specific problem is detected in the receiving stream, effluent, or source water then a monitoring requirement may be added for that parameter. Likewise, if data indicate that a pollutant is not present in the facility's discharge, that parameter may be dropped from the requirements. Limits should be added if the facility shows reasonable potential to exceed water quality standards for toxicants. New facilities should monitor for pollutants of concerns regardless of whether or not there is a water quality standard. Monitoring requirements can be re-evaluated during subsequent renewals. a_FLul,Ntrr '7 :14NIAcrERTsn(s LitYli1 °RINGREQpilREMESNaTmS moitly Ah verge )i.i raimaxiriii a°Nrr mestremertsai,ie Freciency Type Location Floivy See footriotel Instantaneous Es orEstimate Effluent Total Suspended Solids 30.0 mg/L 45.0 mg/1_, See footnotes Grab Effluent pH Freshwater: 6.0 — 9.0 s.u. Saltwater: 6.8 — 8.5 s.u. e fo Se otnote3 Grab Effluent Total Residual Chlorine' Freshwaters: 17- 28)1g/1.. Saltwater: 13 [ig/T- See footnote" Grab Effluent Turbidity4 See footnote Grab Effluent Fluoride' Limit based on potential Quarterly Grab Effluent Total Iron Limit based on potential Quarterly Grab Effluent Total Zinc(' Limit based on potential Quter arly Grab Effluent Total Manganese Limit based on potential Q uartery Grab Effluent Notes to permit writers: 1. For instantaneous flow monitoring, the duration of the discharge must be reported in addition to the total flow. The monitoring frequency for flow should be as frequent as the minimum frequency of monitoring for any parameter listed. 2. Footnote for permit: Limit and monitor only if the facility adds chlorine or chlorine derivatives to water that is eventually discharged. The Division shall consider all effluent TRC values reported below 50 ug/1 to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ug/l. 3. Monitor 2/month if discharge is < 0.5 MGD and monitor weekly if discharge is >0.5 MGD. 4. If the receiving stream is impaired for turbidity a daily maximum limit should be given. See Appendix A for limit and footnote. 5. Fluoride should be monitored if the Permittee backwashes with fluoridated finished water. 6. Zinc should be monitored if the Permittee adds zinc orthophosphate as a corrosion inhibitor prior to backwashing - 7 - V. IMPLEMENTATION 5.1. Monitoring Frequency In order to be consistent with the monitoring guidance employed for other permits across the state, monitoring frequencies will be based on the flow divisions used to define facility class in the 15A NCAC 08C .0302 regulations. Requirements described in I5A NCAC 2B .0508(d) for water supply plants were used as guidance. Table 5 summarizes the monitoring requirements. After sufficient data have been collected (eight to 12 data points over at least one year) the permittee may petition for a reduction in monitoring. Table 5.1: WTP Monitoring Requirements If a parameter is not currently limited but requires a limitation based on potential, increase sampling frequency by one degree. (Quarterly Monthly, Monthly2 Month) Facility Class Conventional Parameters (except flow) and Toxicants (Effluent and Instream) Permitted Flow < 0.5 MGD If limited - 2/Month Not limited - Monthly Permitted Flow 0.5 MGD If limited - Weekly Not limited - 2/Month 5.2. Whole Effluent Toxicity Testing Membrane, ion exchange, and conventional WTPs should be required to conduct quarterly WET tests for monitoring purposes. Eventually, the Division may choose to use this data to develop additional policy. The type of WET test conducted will vary depending on receiving stream characteristics. In addition, the level of available dilution and tidal effects will determine whether the facility should perform an acute or chronic test, while the type of water (freshwater or saltwater) will determine which organism should be used. Table 1 summarizes WET -testing requirements. Appendix A includes sample WET language. Greensand filter systems will not be required to monitor whole effluent toxicity. Table 5.2: WET Test Re uirements- Monitor On& Discharge Condition Test Dilution IWC < 0.25% Acute 24-hour Pass/Fail at 90% IWC ..... 0.25% Chronic test at IWC (maximum 90%) Tidal Effects I Modeled Tidal discharge Chronic test at chronic mixing zone characteristics Ti al Discharge- not modeled' Acute 24-hour Pass/Fail a 9008 Water Type Freshwater Acute test organism: Fathead minnow Chronic test organism: Ceriodaphnia dubia Saltwater Acute test organism: Fathead Minnow OR Mysid Shrimp OR Silverside Minnow (permittee's choice) Chronic test orgartism: Mysid shrimp Notes: 1. Applies to existing dischargers only. 2. Permittee may choose to conduct comparison studies showing Ceriodaphnia dubia to be greater than or equal to Mysid Shrimp in degree of sensitivity to the facility's effluent. - 8 - 5.3. Peer Agency Review At a minimum, the permit writer should consider providing a copy of draft permits for all membrane and ion exchange facilities and major permits for conventional water treatment plants to the following agencies: Division of Marine Fisheries (for saltwater discharges), • US Fish and Wildlife Service, • Wildlife Resources Commission • Division of Environmental Health. Draft permits proposing a discharge to shellfish waters (SA) must also be sent to the Shellfish Sanitation for review. Permits for greensand filter systems will not require inter -agency notification. 5.4. Special Considerations — SA Waters SA waters are, by default, classified as High Quality Waters. Therefore, limits should be calculated using V2 the water quality standard. Draft permits proposing a discharge to SA waters should be sent to the Shellfish Sanitation for review. - 9 - APPENDIX A. RATIONALE FOR PARAMETER INCLUSION CONVENTIONAL PARAMETERS Conductivity (IE and RO facilities) Conductivity provides information on the inorganic nature of a wastewater by tracking the relative concentration of ions. By requiring effluent and instream monitoring of conductivity, it may be possible to assess some of the ionic impacts of the discharge on the receiving stream. Dissolved Oxygen (IE and RO facilities) Low dissolved oxygen concentrations were observed in the effluent of the facilities evaluated. A facility may petition DWQ to reduce/eliminate DO monitoring requirements if they can demonstrate that the discharge has no significant impact on DO levels in the receiving stream. Flow Flow is an important consideration for dilution modeling and nixing zone calculations. Continuous flow monitoring is required for all but intermittent discharges, Green Sand and Ion Exchange WTPs. Flows will not be limited but more accurate flow data will be gathered as continuous flow monitors are installed, The maximum monthly average flow in the most recent three-year period (in which there was a representative discharge) will be used as the facility's flow when performing an RPA. Permittee's are generally allowed 6 months to purchase and install a recorder after it is budgeted by the City. This means allowing 6 to18 months to install a recorder depending on City's budget cycle. Temperature (IE and RO facilities) Literature reviews indicate that temperature is a potential cause for concern. If a permittee can demonstrate that its discharge is not significantly impacting temperature in the receiving stream, the permittee may petition DWQ to reduce/eliminate the temperature monitoring requirements. Total Suspended Solids (all types except RO) Total suspended solids can be a good general indicator of potential toxicity and may be present in elevated concentrations in the wastestream. Since some existing WTPs only have minimal treatment prior to discharge, TSS limits may need to be phased in over a period of time to allow for the construction of new treatment facilities. PH Some of the chemicals used in water treatment can depress or raise pH, and as such, it should be monitored and limited. For discharges to fresh waters, pH will be limited in the range of 6.0-9.0 standard units. For salt waters, pH should be limited between 6.8 and 8.5 standard units. Salinity (IE and R(r)litcilities only) If effluent salinity is much higher than the salinity of the receiving stream, there may be localized acute toxic effects. Turbidity Turbidity in water is caused by suspended matter such as clay, silt, and organic matter and by plankton and other microscopic organisms that interfere with the passage of light through the water (American Public Health Association, 1998). Turbidity is closely related to total suspended solids (TSS), but also includes plankton and other organisms. Turbidity itself is not a major health concern, but high turbidity can interfere with disinfection and provide a medium for microbial growth. It also may indicate the presence of microbes (U.S. EPA Office of Water, Current Drinking Water Standards). Turbidity will not be limited except for facilities that discharge to a receiving stream which is impaired for turbidity. (10 NTU for trout waters, 25 NTU for lakes and reservoirs not designated as trout waters, 50 NTU freshwaters) The Permittee can choose either limit as follows: 1) Upstream and downstream sampling. Footnote: The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50 NTU. If the instream turbidity exceeds 50 NTU due to natural background conditions, the discharge cannot cause turbidity to increase in the receiving stream. or 2) Sample the effluent and put a turbidity limit of 50 NTUs as a daily maximuin. (use if zero lo %-flow) - 10 - II, TOXICANTS Arsenic (RO facilities onl)) For membrane systems, average values of arsenic were slightly below the aquatic life standard and the maximum values observed exceeded standards. Chloride (IE and ROfacilities) Foremost among the water quality concerns for ion exchange and membrane plants are the levels of chlorides present and the effect of these discharges on the receiving stream. Copper (IE, RO, and conventional systems) A data survey indicated the potential for copper to be present in concentrations exceeding NC water quality standards (WQS). While average values were slightly below the aquatic life standard, maximum detected levels exceeded the standards. Since this is an action level parameter, it will be monitored but not limited unless toxicity can be linked to the presence of this parameter in the potable water byproduct. Fluoride Fluoride can be a pollutant of concern for conventional, IE and greensand systems if potable, fluoridated water is used for backwash water. In membrane plants, fluoride levels can be quite high if the source water contains fluoride. In many of the facilities sampled, fluoride levels in membrane WTP discharges showed reasonable potential to exceed water quality standards. Iron Iron is typically a primary pollutant of concern for all types of water treatment processes. This parameter should be monitored (with no limit) since no WQ standard currently exists. Lead (IE systems old)) Lead values present in the IE discharges studied demonstrated the potential to exceed NC water quality standards. Manganese (all facilities except RO) Similar to Iron, manganese is a frequently occurring parameter of concern. The Water Quality standard for Manganese discharged to WS class waters is 200 Total Residual Chlorine Chlorine is introduced through the use of finished water in the filter backwash process, and adds a toxic component to backwash effluent. Note that it's also possible for chlorine to mask toxicity from other sources. Using non -chlorinated or dechlorinated water sources during the backwash process can reduce TRC toxicity, however if a WTP discharges filter backwash water and uses chlorinated water in the backwash process, the discharge will receive a TRC limit from 17-28 tig/L. as a daily maximum (for freshwaters). All Saltwater dischargers should receive a daily maximum limit of 13 ug/L. Most plants will need to build dechlorination facilities to achieve this level in their discharge. All permits with a TRC limit shall include the following footnote on the Effluent and Monitoring page: The Division shall consider all effluent TRC values reported below 50 ug/1 to be in compliance with the permit. However, the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 ugll. Zinc Zinc is a pollutant of concern for all types of facilities. This is an action level parameter and should be monitored without a limit. 111. NUTRIENTS Ammon' The ammonia nitrogen results at conventional water treatment plants indicated very low levels in the potable water by- product. It is important to note, however, that none of the facilities surveyed use chloramination to disinfect the source water, DEH regional office staff has suggested that facilities using chloramines for disinfection should have finished water arru-nonia levels between 0.2-0.5 mg/L but may have levels higher than this. For this reason, those conventional treatment facilities using chloramination will be required to monitor ammonia nitrogen on a quarterly basis. A review of data for IE and RO plants indicated that levels of ammonia nitrogen were considerably higher than background. In addition, a number of WTPs discharge to nutrient sensitive waters, making the need to monitor effluent nutrient levels necessary. Therefore, TN and TP will be monitored quarterly. When sufficient effluent data have been collected, the need for nutrient limits will be assessed on a case -by -case basis. Nitrogen and Phosphorus Nutrient monitoring will be added for all facilities except greensand filters. Monitoring should be added according to basin specific requirements, in order to be consistent with other dischargers throughout the state IV. WET TESTING Because of the potential toxic effects of WTP discharges, all WTPs (except greensand filters) be required to monitor for toxicity. Limits will not be implemented at this time. VI SAMPLE TYPE Membrane and Conventional WTPs Although variability may occur between plants and within a particular facility, the Workgroup felt that grab samples were adequate to characterize the effluent. After reviewing existing data, the consistency in the individual source water and the treatment process over time suggests that grab samples are appropriate. Ion Exchange WTPs Over the course of the regeneration cycle, the effluent characteristics can experience significant variability. Composite samples should be collected for all parameters except flow, total residual chlorine, temperature, dissolved oxygen, and pH. These parameters can only be measured properly using grab samples. An exception to the composite sampling is provided by 15A NCAC 2B.0505 (C), which states that facilities with design flows under 30,000 gallons per day may use grab samples to characterize their effluent. IV ADDITIONAL PARAMETERS OF CONCERN Additional parameters of concern, most notably metals, may be identified in the application package and source water data. Source water data should be entered into a Reasonable Potential Analysis (RPA) in order to assess the need for limits. Such determinations are to be made on a case -by -case basis. -12 - APPENDLX B — SAMPLE WET MONITORING LANGUAGE CHRONIC TOXICITY MONITORING (QRTRLY) The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions. The effluent concentration defined as treatment two in the procedure docwnent is X_X%, The permit holder shall perforni quarterly monitoring using this procedure to establish compliance with the permit condition. The tests will be performed during the months of and Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B. Additionally, DWQ Form AT-1 (original) is to be sent to the following address: Attention: North Carolina Division of Water Quality Environmental Sciences Section 1621 Mail Service Center Raleigh, N.C, 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the perrnittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Section at the address cited above, Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will revert to quarterly in the months specified above. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits, NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. - 13 -