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HomeMy WebLinkAboutNC0026913_Permit Issuance_20001218NPDES DOCUMENT SCANNING; COVER SHEET NC0026913 Sparta WWTP NPDES Permit: Document Type: ; Permit Issuance) Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Correspondence Owner Name Change Meeting Notes Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: December 18, 2000 This document is printed on reuse paper - igrnore any content on the reverse side State of North Carolina Department of Environment and Natural Resources Division of Water Quality James B. Hunt, Jr., Governor Bill Holman, Secretary Kerr T. Stevens, Director Mr. Tom Douglas, Town Manager Town of Sparta P.O. Box 99 Sparta, North Carolina 28675 ATA NCDENR NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES December 18, 2000 Subject:Issuance of NPDES Permit NC0026913 Town of Sparta WWTP Alleghany County Dear Mr. Douglas: Division of Water Quality personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated May 9, 1994 (or as subsequently amended). After a review of the draft permit, the months during which chronic toxicity testing must be performed have been changed. Your facility will continue to perform the chronic toxicity test during the months of March, June, September, and December as listed in your current NPDES permit. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding. Please note that this permit is not transferable except after notice to the Division. The Division may require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Quality or permits required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Natalie Sierra at telephone number (919) 733-5083, extension 551. Sincerely, Original Signed By David A. Goodrich Kerr T. Stevens cc: Central Files Winston-Salem Regional Office/Water Quality Section NPDES Unit Point Source Compliance Enforcement Unit Aquatic Toxicology Unit 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone (919) 733-5083 FAX (919) 733-0719 An Equal Opportunity Affirmative Action Employer VISIT us ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES Permit NC0026913 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision 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, Town of Sparta is hereby authorized to discharge wastewater from a facility located at the Sparta Wastewater Treatment Plant Little River Road Alleghany County to receiving waters designated as Little River in the New River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III and IV hereof. This permit shall become effective April 1, 2001. This permit and authorization to discharge shall expire at midnight on March 31, 2006. Signed this day December 18, 2000. Original Signed By David A. Godrich Kerr T. Stevens, Director Division of Water Quality By Authority of the Environmental Management Commission ti Permit NC0026913 SUPPLEMENT TO PERMIT COVER SHEET The Town of Sparta is hereby authorized to: 1. Continue to operate an existing 0.60 MGD wastewater treatment system with the following components: ➢ Bar screen ➢ Influent lift station ➢ Flow splitter box ➢ Equalization tank ➢ Sequencing batch reactor tank ➢ Floating decanter ➢ Aeration basin ➢ Coarse bubble diffusers ➢. Clarifier ➢ Chlorine contact chamber ➢ Dechlorination system ➢ Submersible sludge pump ➢ Aerated digester This facility is located at the Sparta Wastewater Treatment Plant, Little River Road, Alleghany County, and 2. Discharge from said treatment works at the location specified on the attached map into Little River, classified C waters in the New River Basin. NC00026913 - Town of Sparta WWTP Latitude: 36°29'49" Sub -Basin: Longitude: 81 °06' 13" Quad #: B 14NE/Glade Valley Stream Class: C Receiving Stream: Little River Permitted Flow: 0.60 MGD 05-07-03 flort/'i Town of Sparta NC0026913 Sparta WW1? Permit NC0026913 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS Monthly Average Weekly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow 0.6 MGD Continuous Recording Influent or Effluent BOD, 5-day (20°C)l 30.0 mg/L 45.0 mg/L 3/Week Composite Influent, Effluent Total Suspended Residue1 30.0 mg/L 45.0 mg/L 3/Week Composite Influent, Effluent NH3 as N (April 1 — October 31) 9.3 mg/L 3/Week Composite Effluent NH3 as N (November 1 — March 31) Weekly Composite Effluent Fecal Coliform (geometric mean) 200 / 100 ml 400 / 100 ml 3/Week Grab Effluent Total Residual Chlorine 28 µg/L 3/Week Grab Effluent Total Nitrogen (NO2+NO3+TKN) Semi -Annually Composite Effluent Total Phosphorus Semi -Annually Composite Effluent Temperature (°C) 3/Week • Grab Effluent Chronic Toxicity2 Quarterly Composite Effluent Cadmium 40.7 µg/L 15.0 µg/L Weekly Composite Effluent Copper 2/Month Composite Effluent Mercury 0.2 µg1L Weekly Composite Effluent Selenium 20lag/L Weekly Composite Effluent Silver 2/Month Composite Effluent Zinc 2/Month Composite Effluent Footnotes: 1. The monthly average effluent BODs and total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85% removal). 2. Whole effluent toxicity will be evaluated using the Chronic Toxicity (Ceriodaphnia) P/F test at 9%. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. There shall be no discharge of floating solids or visible foam in other than trace amounts. Permit NC0026913 A. (2.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 9%. The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be performed during the months of March, June, September and December. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment processes. If the test procedure performed as the first test of any single quarter 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 as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable impairment of reproduction or survival. The definition of "detectable impairment," collection methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised - February 1998) or subsequent versions. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the following address: Attention: North Carolina Division of Water Quality Environmental Sciences Branch 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature. 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 permittee 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 Branch at the address cited above. Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the following month. 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. PUBLIC NOTICE { STATE OVOEAj NIRNIN L MANAGEMENT COMMISSION/NPDES UNIT 1617 MAIL SERVICE CENTER RALEIGH, NC 27699.1617 NOTIFICATION OF INTENT TO ISSUE A NPDES WASTEWATER PERMIT On the basis of thorough staff review and application of NC 1 General Statute 143.21, Public law 92-500 and other lawful standards Land regulations, the North A Carolina Environmental Management Commission propos- _ es to issue a National Pollutant Discharge Elimination System Ystem P1 ) wastewater discharge 6� permit to the person(s) listed on the attached pages effective 45 days from the publish date of this notice. Written comments regarding the proposed permit will be accepted until 30 days after the publish date of this notice_ All comments received prior to Chat aate are con- sidered in the final determinations regarding the proposed permit. i The Director of the NC Division of Water Quality may decide to hold a public meeting for the proposed permit should the Division receive significant degree of public inter- Copies of the draft permit and other supporting information on file used to determine conditions ipresent in the draft permit are available upon request and pay- ment of the costs of reproduction. n Production. Mail comments and/or requests for information to the NC Division of Water Quality at the above address or call Ms. Christie Jackson at (919) 733-5083 Please include the extension 538. m number (attached)NPDES permit nY 1 nication. Interestedin eersrs esmmu- I also visit pons may the Division of Water Quality at 512 N. Salisbury Street, Raleigh, NC 27604 1148 between the hours of 8:00 a.m. ,and 5:00 p.m. to review information on file. NPDES Permit Number NC0026913. Town of Sparta 28675P, P.O. Box 99, Sparta, NC renewal for as applied for a permit renewal a facility located in Alleghany County treated wastewater dischargingoLitle River in the New into Little Currently ammonia, fecal coliiform total residual chlorine, cadmium mercury and selenium are water quality limited This discharge' may affect future allocations in this portion of the receiving stream. NORTI-CAROLINA ALLEGHANY COUNTY AFFIDAVIT OF PUBLICATION Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified, nd authorized by 1 to administer oaths, per- ; nally appeared lcl E • a ro v , o being first duly sworn, deposes and says: that he)is Genorel OQma6Pr wner, partner, publisher, or other officer oyee authorized to make this affidavit) e Alleghany News (name of publishing concern) engaged in the publication of a newspa- per known as The Alleghany News (name of' newspaper) published, issued, and entered as second class mail in the City of Sparta in said County and State; that he ( she) is authorized to make this affidavit and sworn statement; that the notice or other legal advertisements, a true copy of which is attached hereto, was published in The Alleghany News (name of newspaper) on the following dates: (IPV, 1(Pl 600 and that the said newspaper in which such notice, paper, document, or legal advertisement was pub- lished was, at the time of each and every such publication, a newspaper meeting all of the re- quirements and qualifications of Section 1-597 of the General Statutes of North Carolina and was a qualified newspaper within the meaning of Sec- tion 1-597 of the General Statutes of North Caro- lina. 00 (signature of person making affidavit) Sworn to and subscribed before me, this . day of .� e.0 e m b-or , 2000.... . 21-0Y.nJ Diary Public) My commission expires: - TOWN COUNCIL MEMBERS: C.J. HENDRIX, MAYOR PRO TEM ROBERT ANDREWS GEORGE M. IRWIN AGNES JOINES RANDY WILLIAMS TOWN OF SPARTA P.O. BOX 99 SPARTA, N.C. 28675 336-372-4257 FAX 336-372-2051 E-MAIL: sprt@skybest.com November 22,•2000 Ms. Natalie Sierra NCDENR - DWQ - NPDES Unit 1621 Mail Service Center Raleigh, NC 27699-1617 Dear Ms. Sierra: Thank you for sending our draft review. We are comfortable with the made in our new permit. NOV 2 9 2000 - C .1I..,; ('u.,LI I Pu, fl 5uu 1 L uic,\`:;.H JOHN H. MILLER, MAYOR BYNUM MARSHALL, TOWN ATTORNEY TOM DOUGLAS, TOWN MANAGER FRANK M. SANDERS, CHIEF OF POLICE RAYMOND MOXLEY, SUPT. MAINTENANCE KAY COX, TOWN CLERK NPDES permit for our changes that will be We do request that the selenium limits be after a year of data has been collected. Thanks for your help. br Very ruly 1.urs, Tom Douglas, Town Manager re-evaluated DIVISION OF WATER QUALITY November 21, 2000 MEMORANDUM TO: Dave Goodrich THROUGH: Matt Matthews f FROM: SUBJECT: Kristie Robeson Draft Permit Correction Town of Sparta WWTP NPDES Permit No. NC0026913 Alleghany County NOV 2 8 2000 VELAR - 6YATER QIl;UTY POINT SOURCE BRAF;c H Our office has received the draft permit for the subject facility. Upon review of this draft, our office noted that Special Conditions A(2) contained different toxicity testing months than the months contained in the facility's current permit. The facility's quarterly toxicity months currently are March, June, September, and December. The Special Condition (2) in this draft has them conducting toxicity testing during January, April, July, and October. Our office recommends correcting the Special Condition page to require toxicity testing to be conducted during March, June, September, and December. Our offices believes that changing the toxicity testing schedule could create reporting problems for this facility. We appreciate your assistance to undertake the necessary steps to correct the existing draft permit and incorporate the recommendation cited above. Please feel free to contact me at 733-2136 if you have any questions. cc: Natalie Siena ESB Facility Files DENR/DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT ' NPDES No. NC0026913 Facility Information Applicant/Facility Name: Town of Sparta WWTP Applicant Address: P.O. Box 99, Sparta, North Carolina 28675 Facility Address: Little River Road, Sparta — Alleghany County, North Carolina Permitted Flow 0.60 MGD ' Type of Waste: 83% Domestic 17% Industrial (1 SIU — Bristol Compressors) Facility/Permit Status: Class 111 /Active; Renewal County: Alleghany County Miscellaneous Receiving Stream: Little River Regional Office: Winston-Salem Stream Classification: C State Grid / USGS Quad: B14NE/Glade Valley 303(d) Listed'? NO Permit Writer: Natalie Sierra Subbasin: ' 05-07-03 Date: 22September00 Drainage Area (mi ): 34 LS {, F ;' rr �t$t. rRk Summer 7QI0 (cfs) 18ii. Winter 7Q10 (cfs): 23 . ,._ S y `` Lat. 36° 29' 49" N Long. 81 ° 06' 13" W 30Q2 (cfs) . Average Flow (cfs): 68 1 WC (%): BACKGROUND The Town of Sparta WWTP is a Class III facility discharging into Little River, which is classified as C waters. At the time of the last permitting cycle, the facility was permitted at 0.25 MGD and had received an Authorization to Construct (ATC) to expand the plant to accommodate a flow of 0.60 MGD. This expansion was completed in 1996. In addition to the expansion, a modified pretreatment program was developed to enable Sparta to accept flow from Bristol Compressors, a metal finishing facility. Instream Monitoring and Verification of Existing Conditions and DMR Data Review. This facility discharges to Little River in the New River basin. The BOD and DO data from instream monitoring indicate that the facility is in compliance with the NPDES permit. The DMRs further confirm compliance with the permit since 1998. In 1997, the facility had problems with total residual chlorine as well as one violation each of the cadmium and fecal coliform limits. The total residual chlorine problem appears to have been fixed since. Of the metals for which the facility must monitor through the NPDES permit, cadmium, copper, chromium, mercury, zinc, and silver have all been detected in the effluent. Correspondence: A review of the correspondence reveals that no NOVs have been issued since 1997. In 1997, NOVs were issued for three total residual chlorine violations, one cadmium violation and one fecal coliform violation. The facility paid the associated fees and has not had any NOVs or compliance problems since. All the inspection reports included in the correspondence folder were fairly positive. PERMITTING STRATEGY Waste Load Allocation (WLA). The Division prepared the last WLA in 1995. The previous and current effluent limits were based on guidelines and water quality standards using the proposed new flow of 0.60 MGD and the inclusion of the SIU. Fact Sheet NPDES NC0026913 Renewal Page 1 Reasonable potential analysis was performed on metals monitoring data from the facility (including the monitoring data from the pretreatment unit). Reasonable potential for contamination was demonstrated for cadmium, silver, selenium and mercury. The acute limit of 15 ug/L was assigned to cadmium and a new limit was imposed for selenium. The mercury limit is already included in the permit. No reasonable potential was shown for chromium, lead, or nickel so it is proposed that these monitoring requirements be removed from the permit. All of these metals will continue to be monitored by pretreatment. No reasonable potential was demonstrated for cyanide, so this requirement will be changed from a limited quantity to a monitored quantity. Copper, zinc and silver will continue to be monitored in the NPDES permit. A summary of the changes resulting from the reasonable potential analysis appear below: Parameter Reasonable Potential Shown? Proposed Permit Change Cadmium Yes Change to acute limit of 15 ug/L Cyanide No Change from a permit limit to a monitoring requirement Chromium No Remove from effluent page Lead No Remove from effluent page Nickel No Remove from effluent page Selenium Yes Add acute limit of 20 ug/L to effluent page All other metals limits or monitoring requirements that were included in the previous permit will remain. SUMMARY OF PROPOSED CHANGES In keeping with Division policies, the following changes will be incorporated into the permit: • A new cadmium limit of 15 ug/L will be incorporated into the effluent limits page • The cyanide limit will be changed to a twice monthly monitoring requirement (based on the facility being a Class III) • The chromium, lead and nickel monitoring requirements will be removed from the effluent limits page (pretreatment will continue to monitor these). • A selenium limit of 20ug/L will be added to the effluent limits page based upon reasonable potential. Included in the cover letter will be a statement that once a year of data have been collected, the reasonable potential analysis for selenium may be performed again (the current RPA is based on 5 data points from pretreatment) • The permit limit for mercury and the twice -monthly monitoring requirements for copper, zinc, and silver will remain in the permit. PROPOSED SCHEDULE FOR PERMIT ISSUANCE Draft Permit to Public Notice: Permit Scheduled to Issue: NPDES V1�1c( IVISION CONTACT October 4, 2000 November 20, 2000 If yo u ' . ve questions regarding any of the above information or on the attached permit, please contact Nata 'e Sierra at (919) 733-5083 ext. 551. N ME: /// pv( DATE: / elIV/W Fact Sheet NPDES NC0026913 Renewal Page 2 REASONABLE POTENTIAL 'Prepared by: Natalie Facility Name = NPDES # = Qw (MGD) = Qw (cfs) = 7Q10s (cfs)= /WC (%) = ANALYSIS Sierra, 9/22/00 Sparta WWTP J NC0026913 0.6 0.92832 18 4.91 Chronic CCC w/s7Q10 dil. Acute CMC w/no dil. Frequency of Detection Parameter FINAL RESULTS, ug/I FINAL RESULTS, ug/I #Samples # Detects Cadmium Max. Pred Cw E .y; Allowable Cw 106 12 Cyanide Max. Pred Cw Allowable Cw 71.4 101.8 1 22 105 Aii., EP Chromium Max. Pred Cw 20.7 re.spnNe7 Allowable Cw 1017.7 (4 tp % ?Ct. 1022 89 32 Copper (A.L.)e"finL`„4 / Max. Pred Cw 138.5 riN:5w-vim; Allowable Cw 142.5 7.3 89 89 Zinc (A.L.) Max. Pred Cw 186.2 { "Novi -kV( Allowable Cw 1017.7 67 58 88 Silver (A.L.) Max. Pred Cw 2.8 , .j•y,,ti ;-U(- Allowable Cw 1.2 1.2 89 3 Selenium Max. Pred Cw 286.7 Allowable Cw 101.8 20 4 1 Mercury Max. Pred Cw 0.4 g = NA 104 1 Allowable Cw 0.244 Modified Data: Use 0.5 Detection Limit for non -detects NOTE: No reasonable potential (all non -detects) for the following priority poll.: Arsenic, Lead, Molybdemum, Nickel ail -CitlobitL(e, Lace 2 Mo Op' ( • mLf T Li3 ) fin'( W)%/ cis ,k) „m l OA.> UV C �N IGK� 1°'1\ lv 1024 306sj • 0IN 0 6/kKT-A c)Pkv 22 ck :Doti -Ft2C_N1t>uS p-nt_ IT �3U,71T2 3OJ( \Z% -r- C,-o r-N t, Ciia)N O O p P t: , C H M t Ko-- ► L 2 C/ANC �r / y�� S y s ) ASS NUNS --- R___-_-f_Fejey, t,L,,srf-72-1, (A)C7 (-g (A-pH/LH 6, /17 I 99 4-7C - 0H/Lii tom` °i1tei 1°a F'.So $ 1 NPDES/Non-Discharge Permitting Unit Pretreatment Information Request Form Pllz-' NPDES OR NONDISCHARGE PERMITTING UNIT COMPLETES THIS PART: Date of Request 9/20/00 Facility Town of Sparta WWTP Permit # NC0026913 Region Winston-Salem Requestor Natalie Sierra Pretreatment A_D Towns- Keyes McGee (ext. 580) Contact E-L Towns- Vacant Position M-R Towns- Dana Folley (ext. 523) S-Z Towns- Steve Amigone (ext 592) PRETREATMENT UNIT COMPLETES THIS PART: Status of Pretreatment Program (circle all that apply) 1) the facility has no SIU's and does have a Division approved Pretreatment Program that isINACTIVE 2) the facility has no SIU's and does not have a Division approved Pretreatment Program 3) the facilit 4 - '- : ::•- - a Pretreatment Program 2a) is Full rogram with LTMP or 2b sModified Program with STMP 4) the facility MUST develop a Pretreatment Program - Full Modified 5) additional conditions regarding Pretreatment attached or listed below Flow Pere,d i Actual Industrial STMP time frame: most recent 7/3 7 119 next cycle 1_ 3 D2 % Domestic M P Pollutant Check List POC due to NPDES/Non- Discharge Permit Limit Required by EPA' Required by 503 Sludge" POC due to SIU•" Site specific POC (Provide Explanation)•••• - STMP ♦ Frequency effluent at LTM Freq cy at of ent \4BOD \\/ 4 Q �1TSS 4 Q M H3� 4 4 Q M V Arsenic \I 4 Q M -1 Cadmium 4 4 Q M 4 Chromium ►mio q 4 Q M 4 Copper imio -4 4 Q M )Cyanide Pak o M 11 VFAL FMtSikr 4 Q M Lead ,ulo q 4 Q M \/ Mercury MID V t' " 4 Q M V Molybdemum 4 Q M i Nickel w►)o 4 4 Q M V Silver Mbo V t' " 4 Q M ' - Selenium 4 Q M 4 Zinc o 41 4 Q M 4 Q M 31:/ 711VPI:Wp 4 Q M 4 Q M 4 Q M 4 Q M 4 Q M 'Always in the LTMP "Only in the LTMP if the POTW land applies sludge "' Only in LTMP while the SIU is connected to the POTW "" Only in LTMP when the pollutant is a specific concem to the POTW (ie-Chloride to a POTW who accepts Textile waste) Q= Quarterly M=Monthly Comments: Nit3 N T 1t4 S'�f^1D, ONW 1 S1l) - Ywed,FNrSr�R ON?) y clo•vt.e S ` Iw J Srin.t� SpartaLTMPrequest Revised: August 4, 2000 Nkott — P1E4f ler me Albbid a 44'w 77.1e ,. P R SUL. Ate. —ryes wi Air Tf%1 �a r�✓ 5:4 1- "1 Sd "A� �LSo - p y ME�R�r� 09-20-2000 11!17AM P.a2 TOWN OF SPARTA STMP HEADWORKS DATA FOR 1997 Sri ►cjI VON 1- %A iA SBR 6-30 A.S. 6-313 EFF. 6-30 EFF. 7-3 INF_ 6-30 INF. 7-i INF. 7.--4 INF- 7-3 EFF. 7-1 EFF. 7-! Ay 015 .017 C. 003 <, 003 C. 00-3 (,'m3 .. 003 C. 003 (. 003 <. 003 Cri . 007 (. 00 i (. 001 <. 0e 1 <. 00l <. L (. ee t <. ie l (. 001 j 4 Cr- . 1 s=" . 1 '' (. 00` <. ma (. ow- <. 00? . Is . 005 .0ib3 (. 00? i Cu 3. ,4 4- 6e _ 036 . la37 . 037 . 038 - 233 . 32 . 11 . ae2 Pt) . 1 12 _ 137 (. 002 (. 002 (_ 002 (_ lime _ 4 ,l'! 1 1 . 8 .4)04 Mg - ma .\\31 ( . 02 ( ( . 000.E ( . 00{b2 ( . 00? _ 0004 ( . 00$w , 0�d5 Mu .01'3 .013 (.005 (.0r@5 <.005 (.005 (.005 (.00 C. 5 4.005 \. Ni .01 (.010 cotes (.01 {,0t(b cello(.010 .4b1 .43l Se (_ 00"` 35 ik0C (. 005 (. 005 .0 1.'3 (. 005 (. 005 _012 ( 005 (. 005 Ag _ 187 6 (.003 (.003 (.003 (.003 S .005 .01 .01 .014 Zry 2. 2.5 . 127 .086 . 1 . 14 .208 .374 . 31 � .244 IL Cn (.i005 (. 005 (. 005 (. 005 (. ems <. Ides (. (. 005 (. 005 .005 BQ 0 / i 1 (2 3 3 (2 10 330i 400 P3 TS 5 / (1 3 1 (1 ‘ 3 222 304 270 aak1 . TOTAL P.3 DIVISION OF WATER QUALITY / NPDES UNIT WATER POLLUTION CONTROL REVIEW SITE VISIT REPORT Facility: Sparta VVV TP Permit No.: NC0026913 Date of Visit: 6/26/98 Facility Sparta, NC Location: Discharge Type(s): 1 Receiving Ownership Type: Stream: Subbasin 303?? Treatment Unit No.: Code(s): Contact: ORC: Bobby Shaw Other Treatment Units: Attending: NPDES: SDP, CHW, BAB, MET W/SRO: Treatment Goals: Special Issues: MU 02,13 Bar screen, influent pump station, flow splitter box; chlorination 30/30 SBR; hybrid process; siphon Purpose of Visit: To view SBR system in operation Conditions: Clear and sunny, 70s, light breeze Overview: Walked through the facility w/ operator, to see how the plant is designed and operated, and to discuss +/- of SBR process. On -site approx. 45 min. Plant Description: The plant is located on a relatively steep hillside adjacent to the receiving stream. The original extended air plant is located approx. 100 ft. upslope of the stream, and the new SBR is cut into the hillside above the original plant. Incoming wastewaters pass through a bar screen to the influent pump station, then up the hill to a cast concrete flow splitter and energy dissipator box. Flow is split between the SBR and extended air systems. The effluents share the same chlorination process and outfall. The SBR is designed by Aqua Aerobics consists of one 0.302 MG reactor tank (cost $ 11 M) and one 0.220 MG effluent holding tank. The extended air plant is 0.250 MG. The plant is permitted for 0.60 MGD and typically sees about 0.30 MGD at present. BOD/TSS limits are 30/30. Operations: The bar screen is of the manually cleaned type, in a channel deep enough to be considered a confined space. Cleaning is labor intensive and a safety issue. Headworks lack grit and scum removal, so both build up in the aeration basins. The flow splitter was not adequately designed, so the operators have made some changes to better control flows to the treatment units. Operators have to be alert with the combined system. The extended air plant handles all flows while the SBR is in react/decant modes; it is at or above its design limit in those times. This is especially troublesome if the SBR is not able to treat and release on schedule. Operators have to be careful in releasing effluent from the SBR holding tank, because the combined flow from the two systems is greater than the hydraulic capacity of the A• SITE VISIT REPORT Page 2 of 3 <facility> NCOO<> <date of visit> chlorination channels. They originally had a problem with the effluent line?, which wanted to siphon off the entire tank in rapid fashion. Other Issues/Solutions: Walkways around the SBR tanks are not connected above ground, so operators must climb down from one, then back up the other. Key SBR tank components are not accessible from tank walkways. For instance, the operator must launch a small boat to get to the surface aerator for maintenance. Follow -Up: None required. TOWN OF SPARTA SLUDGE MANAGEMENT PLAN June 15, 2000 The Town of Sparta has a 160,000 gallon digester where sludge is wasted on a daily basis and is held for stabilization for a period of three months. It is then applied to farm land in conjunction with land application of sludge permit # WQ0006242 by Synagro Corporation. Tom Douglas, T ' r Manager Town of Sparta