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HomeMy WebLinkAboutNC0039420_Wasteload Allocation_19921123NPDES WASTE LOAD ALLOCATION PERMIT NO.: NCO039420 PERIVIITTEE NAME: Virginia Department of Transportation FACILITY NAME: I-77 Rest Area Facility Status: Existing Permit Status: Renewal Major Minor Pipe No.: 001 Design Capacity: 0.02 MGD Domestic (% of Flow): 100 % Industrial (% of Flow): Comments: �tr NlMV� RECEIVING STREAM: Naked Rimer Class: WS-III-Trout Sub -Basin: 403-07, ? Reference USGS Quad: A16SW (please attach) County: Surry Regional Office: Winston-Salem Regional Office Previous Exp. Date: 4/30/93 Treatment Plant Class: Classification changes within three miles: Requested by: SUSAP Robson Date: 8/19/92 Prepared by: Date: Comments:* ctn -" bE �� 3 R 5 fr1 F F& W tN,c� `t AMC 'i `AE Q'*"IG T O r ,TV �T Reviewed by:� �� _ 10,�/ Date: �'/ — � Modeler Date Rec. # Drainage Area (mil ) ; , ? Avg. Streamflow (cfs): 7Q10 (cfs) 0. -L Winter 7Q 10 (cfs) 0.3q 30Q2 (cfs) o. y Toxicity Limits: IWC 1 % Acut Chronic Instream Monitoring: Parameters -rtMp. N1A1 -m, (--EcAL., urir,) ccwnucT Upstream V Location ioo' nbovc dssci,,,,eSr,_ Downstream q Location ti 30o ' bElow clisclnp� Effluent Characteristics Summer Winter BOD5 (mg/1) 30 3c NH3-N (mg/1) 6.0 * zz • o D.O. (mg/1) TSS (mg/1) 30 3 0 F. Col. (/100 ml) Zoo zoo pH (SU) 6 -9 6 - 9 kefflOORL ( L/e Mo "e MONctor_ TtmP«+aS VR� �° C� MONCt Mo N ttve_ �J M s DECEIVED N.C. Dept. of EHNF Facility Name: NPDES No.: Type of Waste: Facility Status: Permit Status: Receiving Stream: Stream Classification: Subbasin: County: Regional Office: Requestor: Date of Request: Topo Quad: FACT SHEET FOR WASTELOAD ALLOCATION Virginia DOT - I-77 Rest Area NCO039420 Domestic - 100% Existing Renewal Naked Run ftmeir WS III & Trout 030703 Surry WS Susan Robson 8/20/92 A16SW Wasteload Allocation Summary (approach taken, correspondence with region, EPA, etc.) Request # 0 CT 14 1992 7o7�,Winston-Salem ,6944— Regional Office Stream Characteristic: USGS # 211370921 Date: 1987 Drainage Area (mi2): 1.13 Summer 7Q10 (cfs): 0.2 Winter 7Q10 (cfs): 0.39 Average Flow (cfs): 1.6 30Q2 (cfs): 0.4 IWC (%): 13 Instream NH3-N data is suspect and is currently being questioned by the regional officer. Schedule Requirements and additional Reviewers: C� Recommended bye— --- �`�" " Date: 9 r► 9 z FARREIL KEOUGH Reviewed by Instream Assessment: Date: Regional Supervisor: Imo' Date:�`�� Permits & Engineering: Date: NOV 0 6 1992 RETURN TO TECHNICAL SERVICES BY: Existing Limits: Wasteflow (MGD): BODS (mg/1): NH3N (mg/1): DO (mg/1): TSS (mg/1): Fecal Col. (/100 ml): pH (SU): Residual Chlorine (µg/1): Temperature (°C): TP (mg/1): TN (mg/1): 7oxic-I+yTe-,�+ (P/F)= PARAMETERS Monthly Average Summer Winter .02 .02 30 30 6 30 30 1000 1000 6-9 6-9 12 12 monitor monitor Recommended Limits: Monthly Average with Monthly Average with Toxicity Test Ammonia limit Summer Winter WQ or EL Summer Winter Wasteflow (MGD): .02 .02 .02 .02 BODS (mg/1): 30 30 WQ 30 30 NH3N (mg/1): monitor monitor **6.08 **7L,b DO (mg/1): TSS (mg/1): 30 30 30 30 Fecal Col. (/100 ml): 200 200 200 200 pH (SU): 6-9 6-9 6-9 6-9 Residual Chlorine (µg/1): monitor monitor 12 12 Temperature (°C): monitor monitor monitor monitor TP (mg/1): WQ WQ d Toxicity test (P/F) Chronic P/F@ 13% ar �h��, �/F ra� - - Sn�e auLcl tP Z'0�'� 1476f �viunaT.t' **Comments from region required if facility failing to meet these limits Limits Changes Due To: Parameters Affected Change in 7Q10 data New regulations/standards New procedures Toxicity / Ammonia New facility information Change in stream classification Other x Parameter(s) are water quality limited. For some parameters, the available load capacity of the immediate receiving water will be consumed. This may affect future water quality based effluent limitations for additional dischargers within this portion of the watershed. No parameters are water quality limited, but this discharge may affect future allocations. 3 INSTREAM MONITORING REQUIREMENTS Upstream Location: at least 100' upstream of discharge Downstream Location: at least 300' downstream of discharge Parameters: Temperature,NH 3-N, Fecal, and Conductivity Special instream monitoring locations or monitoring frequencies: MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS AAdd .quacy of Existing Treatment Has the facility demonstrated the ability to meet the proposed new limits with existing treatment facilities? Yes No If no, which parameters cannot bemet? � It e'�rr1l cl Al, Would a "phasing in" of the new limits be appropriate? Yes // No If yes, please provide a schedule (and basis for that schedule) with the regional office recommendations: Ito 741ei e!/� �- - - -� - - •-.* --- � If no, why not? Wasteload sent to EPA? (Major) _N_ (Y or N) (If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old assumptions that were made, and description of how it fits into basinwide plan) Additional Information attached? _N (Y or N) If yes, explain with attachments. 3 FacilityName Virw-,imm ZaT _-11 Fr--T,- Resoz, Permit # A)c_oo.ica 4 -z.n Pipe # CHRONIC TOXICITY PASS/FAIL PERMIT. LIMIT (QRTRLY) The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in: 1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay Procedure - Revised *September 1989) or subsequent versions. The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality is o3 °lo (defined as treatment two in the North Carolina procedure document). The permit holder shall perform quauejry monitoring using this procedure to establish compliance with the permit condition. The first test will be performed after thirty days from the effective date of this permit during the months of Jw - OP. - JoL_ - Ors . 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, DEM Form AT-1 (original) is to be sent to the following address: Attention: Environmental Sciences Branch North Carolina Division of . Environmental Management 4401 Reedy Creek Road Raleigh, N.C. 27607 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 any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin immediately until such time that a single test is passed. Upon passing, 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 Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute noncompliance with monitoring requirements. 7Q10 e : z= cfs Permitted Flow o _o L MGD IWC 13 % Basin & Sub -basin o -n -075 Receiving Stream - h)pMn P W) 13gAnAal County 5 (lem'-e Recommended by: I II /",Lc)0 � Date D 2- QCL P/F Version 9191 r NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES Division of Environmental Management June 22, 1990 MEMORANDUM TO: Trevor Clements, Technical Support Branch FROM: Abner Braddy, Water Quality, WSRO SUBJECT: Permit Reopener, Establishment of Ammonia Limit Virginia Department of Transportation, I-77 Rest Area NPDES No. NC 0039420 Surry County The subject facility is a 0.020 MGD extended aeration package plant that discharges into Naked Run-B-r-a-neh, WS - III (previously classified Trout). A recent inspection yielded a grab sample value of 80 mg/l NH as N. Furthermore, the 12 month period May 1989 - April 1990, i;AR. data shows an average of 38.3 mg/1 for NH3 as N. Based on the above, the WSRO'recommends that Permit No. NCO039420 be reopened to include a limit for NH3 as N. It is relevant to note that the facility has failed every chronic bioassay test performed at the facility. Please call if additional information is required. AB/al cc: Dale Overcash Central Files f• WSRO < 6'. n JUN 2 6 1990 NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES Division of Environmental Management June 22, 1990 MEMORANDUM TO: Larry Ausley, Aquatic Toxicology Unit FROM: Abner Braddy, Water Quality, WSRO SUBJECT: Toxicity Monitoring Requirements Virginia D.O.T., I-77 Rest Area NPDES No. NC 0039420 Surry County The subject facility is required to perform quarterly chronic toxicity testing (13o IWC) as required in the Permit, effective date May 1, 1988. According to the operators of the facility, every test conducted to date has failed (the results were not being sent to your Unit, and the facility was sent a Notice of Violation, dated May 24, 1990, for, among other things, failure to report toxicity). A review of Part III, G of the subject Permit shows the standard wording requiring monthly monitoring after a test failure was not included. The WSRO recommends that the Permit be reopened to include the updated compliance language regarding toxicity. Please note that in the attached memo, we are also requesting that the Permit be reopened to include an ammonia limit. If you have questions or require additional information, please call. AB/al cc: Dale Overcash Central Files WSRO Virginia DOT - 1-77 Rest Area - Allowable Waste Concentrations .-:::SUMMER Residual Chlorine ..,.'.,.".'."'Ammonia as NH3 7Q10 (CFS) 0.2`'`:``:s7Q10 (CFS) 0.2 DESIGN FLOW (MGD) 0.02:DESlGN FLOW (MGD) 0.02 DESIGN FLOW (CFS) 0.031 :::: DESIGN FLOW (CFS) 0.031 STREAM STD (UG/L) 17.0::::STREAM STD (MG/L) 1.0 UPS BACKGROUND LEVEL (UG/L) 0' UPS BACKGROUND LEVEL (MG/L) 0.22 IWC (%) 13.42":::IWC,(%) 13.42 Allowable Concentration (ua/l) I126.68€€<<Allowable Concentration (ma/1) 6.03 WINTER Ammonia as NH3 7Q10 (CFS) 0.39 DESIGN FLOW (MGD) 0.02 DESIGN FLOW (CFS) 0.031 STREAM STD (MG/L) 1.8 UPS BACKGROUND LEVEL (MG/L) 0.22 IWC (%) 7.36 Allowable Concentration m /I 21.68 NCO039420 FK 9/24/92 �a�6 V�g.C.A114p Al N� woo P•c.) � � twnX�t1 �ox�ca �N t\3 N 1 o�e r�P COPO .+tea jQ Pbat 51+uc-C C WS = w5 = = Tawj I ck�elc-K AKI I COMA out SvaQ data— A6 �►� � dpi� °d ,j,,i INSTREAM DATA ' JVC.Q QL3e"I �'+�iD vl(tTale�Hl's '�� 'TC6r DATE F iN� • •, M���� �li�?R17���71C�r]1s W1IOLli liP1"L111 N'l'"1'C)XIC:1'1"Y'1'I?ti"1'l`Ci 0(Sl:L1-YlU\1'1'OIUNG SLiNIMARY( Thu, Aug 13. 1992 TEXACO REPINING/STAR ENTERPRISE PERM:2411R AC \1ON1T EPIS (GRAB) 88 --- --- NONE •-- "' '- _ -_ -- -_ - - _•. _-- NC0022209 Begin: 09/01/91 F:cqucncy:5.OWD/A NmComp: 89 -- 90 NONE ... ..- --- --- ... .. .. ..- ... .-- Cc,untv:G[iESORD Resion:WSRO Subbasin:CPF08 91 NONE -. .-. PF: Special 0,,kr: 92 >90 ... ... -.- .-- .-. 7QIO: 0.00 IWC(%): 100.00 _. -.. 1'C:XASG(JLF/ O10 PERM 481-IR AC M011UR "111D & MY) 68 --" "-• --- -- ... - ... --- ... ... ... --. ... �.. ... NC0003255/010 Bcgm:08/01/::8 I--qurncy: Q JAN APR JUL, OCNonComp: 89r ,- -- ... --- -•- -- --' -'- '-- ..- -'- County:BEAUTORT Rcgion: WARD Subbmin:TAR07 90 -. 95 ... -- Special SOC•1/6/92-11/1/92-AC48]TR MO\rf LC50 MY AND frll-ID --• .. PF: 70I0: 'nDAL nvC(%): - order. (t a,7,to) 92 --- NR NR A00f,>10 --- .. .. TEXASGULF/002 � 'r: �. LEI' AC TARA811R MY 88 --- --- ... ... ... ... ... """ ... ... --- .-. ... ... . . Nonc' NC0003255/00"c $cgcn 02J19/`)2 Frcquenry: \t ^In 99 -- ... -.. ... ... ... ... -.. ... --• -- Ccunty:BEAUFORT Rcgion:WARO Subbasin:TAR07 90 •-- --- --- - '-- special PF: - ... ... ... >t00my >100my NR 7Ql0: "rinnL nvc(�o): Order.92 ,"IFXII iNDUS1RIES PERM CHR LIM:99%(GRAB) 88 --• --' .-- --- -- N --- -- --- --- --- . NC0076554 Begh:12/O1149 Fmquenry: Q P/F A MAR JUN SET DEC NonComp: 89 -- -- G>•_nty:CRAVEN Region: WARD Subbasin: NE1J08 90 91 ... si—ial 92 ." --- 7Q10:0.00 IWC(%): 100.00 QdeT: .. NONE NONE NONE NONE' PI NONE- FAIL PASS ... '11-IOMASV P LE W W7Y PERM CFIR LM:95% Y IIB NONE 47 FAIL _-_ ... FAIL FAIL FAIL FAIL FAIL NR PASS -• NC0024112 Begi:::06/Ol/89 Fralucncy: Q P/F A FEE MAY AUG NOV NmCorq,: 89 -- PASS --- -- FAIL FAIL PASS PASS -.- Cnunty:DAVIDSON Rcgion: WSRO Subbasin: YAD07 90 --- 91 --. PP , FAIL --- �-- PASSR --- PASS -- PASS --- PASS -- --. ... sinl PF:4.00 pee 92 ... PASS --- '"" FAIL FAIL FAIL 7QI0: 0.32 IW'C(%): 95.1 Order. ... TOASTMASTER. 1AS'1'fiR, INC. PERM CI IR I.ANt:99% 88 •-- ... ... ... ... H ... --- ... -.. ... ._ ... ... ... ... ... NC[X105053 Ilcgin:05/O]/RR Prulua,cy: Q P/I' MAR1lJN SIT DEC 14onCamp: 89 ... ... ... ... ... ... ... ... ... _. ... ... County:SCUMAND Region:PRO Subbasin:YAD55 90 91 .-. ... ... ... --- -- ••• •- -" Pr: 0.015 special 92 '.. """ ... ... --- -" 7Q10:0.00 JWC(%):I00.00 Order. — 7RANSPORTATION, NC D01- OF PER,%4 CITR LIM:9%(GRAB) 99 -- - _-- -__ ..� ... ... --- -- •-- NC0028614 TJc[;in:04/O1/92 Fregw:nry: Q P/F' A JAN APR JUL OCT NmComp: 8990 ... ... --- --- Coveny: YAUKI.N Rcgion: WSRO Subbasin: YAD06 91 ... ... ... --- -- PF:.018 pc 92 FAIL FAIL FAIL - 7Qt0: 0.3 IWC(%): Orden 1RANSPURTATION, NC DUM' OF PERM CILR LIM:13% 88 --- -- - -" . - - , A I•TII MAY AUG NOV Nmcn Sin lc NC0029190 Bcgin:03/01/92 1'icqucnry: Q I /F trip:. b 89 --• ... ... ... ... ... CountySURRY Ron:cgiWSRO Subbasin: ROA03 90 - - 91 ... ... .-. 5 al PI-: 0.030 p-i 92 ... ". ... ... PASS '-- 7 QJ 0: 0.3 1 W C(%): 13 Ordcr j3SPORTA,nON, VA DEPI' OF PERM C:14R hLM:13% 99 F 99 FAIL FAIL FAIL FAIL NCO039420 Begtn:05/01/88 Pmquercy: Q P/F JAN APR JUL ocr NmComp: FAIL --- PASS - - -- PASS -- --- FAIL Cou.nv:SURRY Region:WSRO Subbasin:YAD03 90 FAIL 91 ... ..- PASS .-� FAIL FAIL FAIL -- --� -. -.. -- FASS PASS " PF: O.D2 Special oRkr. 92 FAIL PASS - PASS -- - - 7010'02 IW(Y Y,)-1342 --- ... ... ... --- "IRL1D-lERV1liVAL CO' PERM:48HR Ac MONPI' EPIS 88 -- ... --- -- NC00,17501 B gin:08/01/88 Frequency: 5 OWD NonComp: ... 89 . . . .. ... ... - -- ... ... ... ... ... --- County; G[JII .pORI') i(r yion: WSit(1 S0,I—in: CIIF08 90 .. 01 NUNL . .. ._ ... ... ._ .. ... IT: slKc,.I ... - 7010:0.00 IWC(%): 100.00 Order. 2 ... ... 0 2consecutivc failures=signirteantnoncornpliance Y Pn; 199E Data Available L.1 •.GEND: drninistrntivc Leucr -'target Fr = Mmitoring frequency: Q- Quartcrl y; pt- 91on:fdy; BM- Rinumdtly; .`iA- Scmumnually; n Annually; OWI)- OnlyAN PR JUL [1C,irchar VrniC �fr'PiscCurrued srn Cmnpl ance Re<fuireng nKr=,;t IS- Conducting indepundeni study I'{'.R>t = li:nnit RCCILLISInetli Ll r A - , Rein = M-t month mauired 7Q10 = ILecciving stream low now criterion (cfs) A = quarterly moniutring inemascs to mont)dy upon sinrJc fnilme Monds U,m testing :oust occur - ex. J /1 irt: = Permitted [tow (MGD) 1WC% = IIL Cream wall- ua:mntmtim Pfl' = Irsss,Taa chronic xst AC = Aeulc CI IR = Ci,m:uc Gruum bt - Rad test I ata Not.0 m: f - Fathead Minnow; " - Cerirdanimia sot ury - \tvsid s1,rimn: (1;V -Chronic vallu: P - Mortalin• of uatcd nercenbV Nowlvtisstcon,l `, I` ,ns:.�::c`); Flc-fArtivc hotfoot di`chargmC SIG = ORC signatu,c na:dcd i lie •'rmin nl uuncr Facility Activit � Staves: 1 - hucti-, , !< Rcp,xting Notation: --- = Data not required; N11t - Not ccpnrtcd; O • br t, Q •' ) sn cc: Permits and Engineering Technical Support Branch County Health Dept. rRT ���,, Central Files WSRO SOC PRIORITY PROJECT: Yes If Yes, SOC No. To: Permits and Engineering Unit Water Quality Section Attention: Mack Wiggins Date: October 19, 1993 NPDES STAFF REPORT AND RECOMMENDATION County Surry Permit No. NCO039420 PART I - GENERAL INFORMATION 1. Facility and Address: 2 0 190/3 Va. DOT I-77 N Rest Area Virginia DOT 1401 East Broad Street Richmond, VA 23219 No X 2. Date of Investigation October 18, 1993 3. Report Prepared by: Frank R. Lassiter 4. Persons Contacted and Telephone Number: Mr. Earl Robb (804)786-4559 not contacted 5. Directions to Site: From WSRO travel Hwy. 52 N to Mt. Airy, turn left on Hwy. 89, travel west to I-77, turn north onto I-77, travel to the NC/VA state line, the rest area is located on the right side of I-77, just inside Virginia. 6. Discharge Points(s), List for all discharge points: Latitude: 360 33' 36" Longitude: 800 44' 39" U.S.G.S. Quad No. A16SW U.S.G.S. Quad Name Cana 7. Site size and expansion area consistent with application ? X Yes No If No, explain: 8. Topography (relationship to flood plain included): The facility is on level ground well above the flood plain. 9. Location of nearest dwelling: Approximately 500 feet. 10. Receiving stream or affected surface waters: Naked Run Creek a. Classification: WS-IV Trout b. River Basin and Subbasin No.: 03-07-03 C. Describe receiving stream features and pertinent downstream uses: Naked Run Creek is a rural watercourse. It becomes tributary to Stewarts Creek, which serves as a raw water supply source for the city of Mt. Airy. The NC I-77 Rest Area also discharges to Naked Run Creek, approximately 500 feet upstream of this discharge point. Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Volume of Wastewater to be permitted: 0.020 MGD (Ultimate Design Capacity) b. What is the current permitted capacity of the Waste Water Treatment facility? 0.020 MGD C. Actual treatment capacity of the current facility (current design capacity)? 0.020 MGD d. Date(s) and construction activities allowed by previous Authorizations to Construct issued in the previous two years. N.A. e. Please provide a description of existing or substantially constructed wastewater treatment facilities; The system consists of bar screen, comminutor, aerated equalization basin, flow splitter box, dual aeration basins, dual secondary clarifiers, dual sludge holding basins, dual chlorination basins, diffused air reaeration, and dechlorination. f. Please provide a description of proposed wastewater treatment facilities. N.A. g. Possible toxic impacts to surface waters: Ammonia and chlorine. h. Pretreatment Program (POTWs only): N.A. 2. Residuals handling and utilization/disposal scheme: Pumped and hauled to Hillsville, VA POTW. 3. Treatment plant classification (attach completed rating - sheet). Class II 4. SIC Code(s): 9621 NPDES Permit Staff Report Version 10/92 Page 2 Primary 13 Secondary Main Treatment Unit Code: 0 6 0 X 7 PART III - OTHER PERTINENT INFORMATION 1. Is this facility being constructed with Construction Grant Funds or are any public monies involved. (municipals only)? N.A. 2. Special monitoring or limitations (including toxicity) requests: N.A. 3. Important SOC, JOC or Compliance Schedule dates: (Please indicate) N.A. 4. Alternative Analysis Evaluation: Has the facility evaluated -all of the non -discharge options available. Please provide regional perspective for each option evaluated. Spray Irrigation:- Topography constraints. Connection to Regional Sewer System: Not an option. Subsurface: Shallow soils, severe slopes. Other disposal options: N.A. 5. Other Special Items: N.A. PART IV - EVALUATION AND RECOMMENDATIONS This facility has historically had problems meeting the suspended solids limit. As noted previously, the facility has an equalization basin, so the solids problem should not be due to hydraulic overload. There have been some indications of filamentous problems in the past, and that has aggravated the solids problem. The facility has also discharged high levels of ammonia in its effluent. The waste stream is high in urea, and there are also high strength cleansers used. The last four months of DMR data indicate that the problem still exists. The current permit has a phase in date of May.1, 1996 for the ammonia limit. The permit should be changed to require continuous flow measurement. NPDES Permit Staff Report Version 10/92 Page 3 The regional office has no objection to this permit being reissued. Environmental Technician IV l �,-,Water Quality Regional Supervisor NPDES Permit Staff Report Version 10/92' Date /©-/7-75 Date Page 4 RATING SCALE fOR CLASSIFICATION OF FACILITIES (1) 12) (3) Name of Plant 4 Owner or Contact Mailing Address-_ ,cQIA 10 - b ww i f) County:I`y Telephone: NPDES Permit No. NC00-39ZQ Nondisc. Per. No. qy_ D6_3d issueDate- q 3- 0 (0 - d i Expiration Date: Existing Facility r✓ New Facility l l assfiP� Date: q C) 11 Rated By: 'man 1r - Reviewed (Train. & Cert.) . Reg. Office Reviewl (rain. 8 Cert.) Central Office ORC r r Grade 2 Plant Class: (circle one) ' I �"� " 111 iV Total Points= POINTS Industrial Pretreatment Units andfor Industrial Pretreatment Program .4 (see definition No. 33) p s aN FLOW OF PUWT W GPI) (not applicable to non -contaminated cooling waters. sludge, handling facilities tot water purification plants, totally dosed cycle systems (del. No. 11). and facilities consisting only of Item (4) (d) or Items (4) (d) and (11) (� a— 20,000.......................:.. 2 20.001 — 50.000.......................... 3 50.001 - 10o.000.......6.................. •...... 4 100.001 — 250,000 .................... 5 250.001 — 5W.000...................:........ : a Soo,00l-�,�.o0o ...... .. . ............. 10 1.00tt.001— 2.000,000 ....................... .. 1 additional for each 2X0.001 (and up) - rate point 200.000 gpd capacity up to a maximum Of 30 Design Flow (gpd) PRELIMINARY UNITS (see definition no. 32) (a) Bar Screens ..................... 9........... Of (b) Mechanical Screens. Static Screens or Comminuting Devices ........................ ' (e) Grit Removal ............................... or (d) Mechanical or Aerated Grit Removal ........... 2 (e) Flow Measuring Device ....................... ' or 2 () instrumented Flow Measurement .............. (91Preaeragon................................ (h) influent Flow -Equalization ................... 2 n Grease or Oil Separators - Gravity .......... - Mechanical .......... 3 Dissolved Air Flotation. B 5 0 Prechlonalion .............................. ri (4) PRIMARY TREATMENT UNITS 2 (a) Septic Tank (see derinilion no. 43) ..........•::: • S (b) imhoffTank ............................. S (c) Primary Clarifiers ............... ....... (d) Settling Ponds or Settling Tanks for inorganic Nontoxic Materials {sludge handling. facilities for water purification plants. sand. gravel. stone. and other mining operations except ....-- -.. �. a- ^am nr neld (5) SECONDARY TREATMENT UNITS (a) Carbonaceous Stage ()Aeration - High Purity Oxygen System ..... 20 Diffused Air System ........... Mechanical Air System (fixed. floating or rotor) .............. B Separate Sludge Reaeratan ..... 3 (ii) Trickling Filter High Rate.. : 7 Standard Rate ............... 5 Packed Tower ............... 5 (iii) Biological Aerated Filter or Aerated Biological Filter 10 ...................... (iv) Aerated Lagoons ...................... 10 (v) Rotating Biological Contactors .......... 10 (vi) Sand Fitters - 2 intermittent biological ..... recirculating biological ..... 3 (vn) Stablization Lagoons ........ - - (v"n)Clar7er :............................. (ix) Single stage system for combined carbonaceous removal of SOD and nitrogenous removal by nitrification (see del. No. 12) (Points for this item have to be in addition to items (S) (a) • (s) through (S) (a) (40) .............. . 8 (x) Nutrient additions to enhance SOD femoval......... Biological Culture ('Super Bugs') addition 5 (x) to enhance organic compound removal ..... 5 (b) Nitrogenous Slag* 20 () Aeration -High Purity Oxygen System ..... Diffused Air System ........... 10 Mechanical Au System (fixed. floating, or rolo) ........... 8 3 Separate Sludge Reaeration ..... (i) Trickling Filler T NighRate �............. 5 Standard Rate............ 5 Packed Tower............ (iii) Biological Aerated Filler or Aerated Biological Filter .........................10 ............. • .. • • . • . • .. 10 (iv) Rotating Biological Conlaclors ........... (v) Sand Filter. 2 intermittent biological ........ recirculating biological ....... - 3 5 (vi) Clarifier....... ......................... TER-aAFtY OR ADVANCED TREATMENT UNIT (10) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9) (aj Activated Carbons Beds - S (not applicable to chemical additions rated as item without carbon regeneration .................. 15 (3) (-)! . (5) (a) (xi). (6) (a). (6) (b). (7) (b). (7) (a). r, with carbon regeneration ..............:..... ig) (a). (9) (b). or (9) (c) 5 points each: List: (b) Powdered or Granular Activated Carbon Feed - ..... 5 regeneration carbon regeneran ................. 5 with carbon regeneration ..................... 15 ...... 5 5 (c) Air Stripping ............................. 5 ..... (d) DerMlication Process (separate process) ..... 10 (e) Etedrodialysis ............................. 5 (11) MISCELLANEOUS UNITS (f) Foam Separation ............................. 5 (a) Holding -Ponds. Holding Tanks or Settling Ponds (g) ton Exeharpe................................ 5 for Organic or Toxic Materials Including wastes (h) Land Application of Treated Effluent from mining operations containing nitrogen and/or (see definition no. 22b) (not applicable for phosphorous compounds In amounts significantly aand..gravel. stone and other similar mining greater than Is common for domestic wastewater .,........ A .operations) (b) Effluent Flow Equalization (not applicable to storage (1) on agdorflurally managed sides (See del. • basins which are inherent In land application systems). 2 No.4)................................... 10 (e) Stage Discharge (not applicable to storage basins (ii) by high rate Infiltration on non -agriculturally inherent to land application systems_ 5 managed siles (includes rotary distributors (d) pu,nps and similar fixed nozzle systems) ........... 4 (e) Stand -By Power Supply 3 (ill) by subsurface disposal (includes low pressure (1) Thermal Pollution Control Device. .... 3 pipe systems and gravity systems except at plants consisting of septic tank and nttrifica- `? fen Hines only) ............................. d TOTAL POINTS Microscreens...................................5 U) Phosphorus Rewfal by Biological Processes CLASSIFICATION (See def. No. 26) ............................ 20 (k) Polishing Ponds - without aeration ....... 2 I _._ 5 - 21 Points with aeration .......... S Cliss Il 6- 50 P (l) Post Aeration - cascade .............. 0 Class III 61- 65 Points diffused or mechanical ... T> Class tV 66- lip Points (m) Reverse Osmosis ............................... 5 (n) Sand or Mixed -Media Filters - low ate ........... 2 FaoTties having a rating of one through four points, inclusive, high ate .......... 5 do not require a certified operator. Classification of all other (a) Treatment processes for removal of metal or facilities requires a comparable grade operator In responsible cyanide .................................... 15 charge. (p) Treatment processes for removal of toxic materials other than metal or cyanide ......... 15 Facilities having an activated sludge process will be assigned a minimum classification of Class IL SLUDGE TREATMENT Facilities having treatment processes for the removal of metal (a) Sludge Digestion Tank -_Heated ............... 10 or cyanide will be assigned a minimum classification of Class It. Aerobic.............. 5 Unheated ...... ....... 3 Facilities having treatment processes for the biological removal (b) Sludge Stabilization (chemical or thermal) ....... 5 of phosphorus will be assigned a, rninimum classification of Class (e) Sludge Drying Beds - Gravity ................. 2 ill. . Vacuum Assisled ....... 5 (d) Sludge Elul►iafron ............................. 5 In -plant processes and related control equipment which are an (e) Sludge Conditioner (chemical or thermal) ........ 5 integral part of industrial production shall not be considered waste (1) Sludge Thickener (gravity) ...................... 5 treatment. Mewise, discharges of wastewater from residences (g) Dissolved Air Flotation Unit having a design flow of 1.000 gpd or less. shall not be subject to . (not applicable to a unit rates as (3) (l) .......... 6 rating. (h) Sludge Gas Uligzation (including gas storage) .... 2 (i) Sludge Bolding Tank - Aerated ................ - Nom-aeraled............ ® ADDITIONAL COMMENT& As (D Sludge incinerator - (not including activated carbon regeneration) .. 10 (k) Vacuum Filter. Centrifuge or Filter Press or other similar dewalering devices .................... 10 jli) SLUDGE DISPOSAL (including incinerated ash) • (a)Lagoons ...................... .................... (b) Land Application (surface and subsurface) 2 (see definition 22a) -where The facility holds the land app. perm$ ... 10 -by contracting to a land apprcalion operator who - holds the land appTcation permil ... ... . • . 2 . -land application of sludge by a contractor who does not hold the permit for the wastewater treatment facility where the sludge is generated ......... 10 =_ (c) Landfifled (bur,atl ............................. 5 J�) DISINFECTION (a) Chforination ............................. (b) Dechlorinat'wn........................ (c) Ozone ............................... . 5 ' (d) Radiation ..........................