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Home My WebLink AboutNC0021491_Permit Issuance_20141006NCDENR North Carolina Department of Environment and Natural Resources Division of Water Resources Pat McCrory Governor October 6, 2014 Ms. Christine Bralley, Town Manager Town of Mocksville 171 Clement St. Mocksville, NC 27028 Subject: Final NPDES Permit Permit NCO021491 Dutchman Creek WWTP Davie County Class III Facility Dear Ms. Bralley: John E. Skvarla, III Secretary Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES 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 October 15, 2007 (or as subsequently amended). The final permit contains the following changes from the draft permit: • A Nutrient Reopener Special Condition was added to the permit to address a future TMDL or management strategy for High Rock Lake. See Special Condition A.(5). The final permit contains the following changes from your previous permit: • As a result of a Reasonable Potential Analysis (RPA) monitoring for cyanide was eliminated from your permit monitoring requirements. • The acute cadmium limit was incorrectly expressed in the draft permit as a weekly average. Emit, the limit should be a daily maximum limit as in your previous permit. This correction is reflected in your final permit. 1601 Mail Service Center, Raleigh, North Carolina 27699-1601 Phone: 919-707-86001 Internet: www.ncdenr.gov An Equal opportunity 1 Affirmative Action Employer— Made in pant by recycled paper Ms. Bralley October 6, 2014 Page 2 of 2 • Monitoring for copper, silver and zinc was modified to quarterly according to the Division's monitoring frequency guidance for metals. • The requirement to perform effluent pollutant scans was modified from annual to three times during your permit cycle. See Special Condition A.(3). This condition also includes requirements for toxicity testing with alternate species. • The permit includes a Special Condition [See Part I, A. (4.)] to address the Environmental Protection Agency's (EPA's) pending requirement for you to provide electronically-' submitted Discharge Monitoring Reports (eDMRs). 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 requited by the Division of Water Resources or permits required by the Division of Land Resources, the Coastal Area Management Act or any other federal or local governmental permits that may be required. If you have any questions concerning this permit, please contact Teresa Rodriguez at telephone number (919) 807-6387 or at email Teresa.rodriguez@ncdenr.gov. 0S" erely, omas A. Reeder, Director Division of Water Resources, NCDENR cc: NPDES Files Central files Envirolink, Ms. Heather Adams, PO Box 670, Bailey, NC 27807 Winston Salem Regional Office / Surface Water Protection Section (e-copy) Aquatic Toxicology Branch, Susan Meadows (e-copy) Ecosystems Branch, Carrie Ruhlman (e-copy) Permit N00021491 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER RESOURCES TO DISCHARGE WASTEWATER UNDER THE 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, the Town of Mocksville �' is hereby authorized to discharge wastewater from a facility located at the Dutchman Creek WWTP 295 Garwood Road Mocksville Davie County to receiving waters designated as Dutchman Creek in the Yadkin -Pee Dee River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof. The permit shall become effective November 1, 2014. This permit and the authorization to discharge shall expire at midnight on June 30, 2019. Signed this day October 6, 2014. Thomas A. Reeder, Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 8 Permit NCO021491 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. The Town of Mocksville is hereby authorized to: 1. Continue to operate the existing 0.98 MGD wastewater treatment system that includes the following components: ➢ Flow splitter box ➢ Mechanical fine screening ➢ Grit removal ➢ Flow measurement ➢ Three aeration basins ➢ Three secondary clarifiers ➢ Chlorination and dechlorination units ➢ Sludge recirculation and wasting ➢ Aerobic digester ➢ Emergency generator This facility is located at the Dutchman's Creek WWTP (295 Garwood Road, Mocksville) in Davie County. -2. Discharge from said treatment works at the location specified on the attached map into Dutchman Creek, classified C waters in the Yadkin -Pee Dee River Basin. Page 2 of 8 Permit NCO021491 A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of the permit and lasting until permit expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored6 by the Permittee as specified below: LIMITS . MONITORING .REQUIREMENTS EFFLUENT Monthly, Weekly Daily Measurement Sample Sample CHARACTERISTICS Averageg Averageg Maximum Frequency -Type Zocationr Flow 0.98 MGD Continuous Recording for E BOD5 20 °C2 5.0 mg/1 7.5 mg/1 3/Week Composite I, E (April 1- October 30 BOD5 20 °C2 10.0 mg/L 15.0 mg/L 3/Week Composite I, E ovember 1- March 31) Total Suspended Solids2 30.0 mg/1 45.0 mg/1 3/ Week Composite I, E Temperature Daffy Grab E, U, D Dissolved Oxygen 3/ Week Grab E, U, D Fecal Coliform 200 / 100 ml 400 / 100 ml 3/ Week Grab E mean -(geometric NH3 as N 2.0 mg/ 1 6.0 mg/1 3/ Week Composite E (April 1- October 30 NH3 as N (winter) 4.0 mg/L 12.0 mg/L 3/Week Composite E November 1- March 31 Total Nitrogen Quarterly Composite E (NO2 + NO3 + TKN) Total Phosphorus Quarterly Composite E H 6.0 - 9.0 standard units 3/Week Grab E Total Residual Chlorine4 28µg/l 2/ Week Grab E Chronic Toxici 5 Quarterly Composite E Cadmium 5.3 µ /1 36 µ /1 Monthly Co m osite E Quarterly Composite E -Copper Zinc Quarterly Composite E Silver Quarterly Co m osite E Effluent Pollutant Scan Monitor and Report Footnote 7 Footnote 7 E Notes: 1. I= Influent. E= Effluent. U= Upstream approximately 100 feet upstream from the outfall. D= Downstream approximately 0.5 miles downstream from the outfall. Upstream and downstream samples shall be grab samples collected 3/week during June, July, August, and September and once per week during the rest of the year. As a participant in the Yadkin Pee -Dee River Basin Association, the subject facility is not responsible for conducting the instream monitoring requirements as stated above. Should your membership in the agreement be terminated, you shall notify the Division immediately and the instream monitoring requirements specified in your permit will be automatically reinstated. 2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15 percent of the respective influent value (85% removal). 3. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l from April 1 to October 31, and no less than 5.0 mg/L from November 1 to March 31. 4. The Division shall consider all effluent total residual chlorine values reported below 50 µg/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 µg/l. 5. Chronic Toxicity (Ceriodaphnia) at 37%: January, April, July, and October (see condition A. (2)). 6. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports electronically using NC DWR's eDMR application system. See Special Condition A (4). 7. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see A. (3)]. Page 3 of 8 Permit NCO021491 There shall be no discharge of floating solids or visible foam in other than trace amounts. A. (2.) QUARTERLY CHRONIC TOXICITY 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 37%. The permit holder shall perform at a minimum, ua� rtemonitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or subsequent versions. The tests will be performed during the months of January, April, July, and October. These months signify the first month of each three-month toxicity testing quarter assigned to the* facility. 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 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 -December 2010) 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 TGP39 for the pass/fail results and THP3B for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the following address: , Attention: North Carolina Division of Water Resources Water Sciences Section/Aquatic Toxicology Branch 1621 Mail Service Center Raleigh, North Carolina 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 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 no 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. Should thee-permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the following month. Assessment of toxicity compliance is based on the toxicity testing quarter, which is the three month time interval that begins on the first day of the month in which toxicity testing is required by this permit and continues until the final day of the third month. 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, 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 Page 4 of 8 Permit NCO021491 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. A. (3) EFFLUENT POLLUTANT SCAN The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below. One scan must be performed in each of the following years: 2015, 2016, and 2017. Analytical methods shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters are present in concentrations greater than applicable standards and criteria. Samples should be collected with one quarterly toxicity test each year, and must represent seasonal variation [i.e., do not sample in the same quarter every year]. Unless otherwise indicated, metals shall be analyzed as "total recoverable." Ammonia (as N) Chlorine (total residual, TRC) Dissolved oxygen Nitrate/Nitrite Kjeldahl nitrogen Oil and grease Phosphorus Total dissolved solids Hardness Antimony Arsenic Beryllium Cadmium Chromium Copper Lead Mercury (EPA Method 1631E) Nickel Selenium Silver Thallium Zinc Cyanide Total phenolic compounds Volatile organic compounds: Acrolein Acrylonitrile Benzene Bromoform Carbon tetrachloride Chlorobenzene Chlorodibromomethane Chloroethane 2-chloroethylvinyl ether Chloroform Dichlorobromomethane 1,1-dichloroethane 1,2-dichloroethane Trans-1,2-dichloroethylene 1,1-dichloroethylene 1,2-dichloropropane 1,3-dichloropropylene Ethylbenzene Methyl bromide Methyl chloride Methylene chloride 1,1,2,2-tetrachloroethane Tetrachloroethylene Toluene 1,1,1-trichloroethane 1,1,2-trichloroethane Trichloroethylene Vinyl chloride Acid -extractable compounds: P-chloro-m=cresol 2-chlorophenol 2,4-dichlorophenol 2,4-dimethylphenol 4,6-dinitro-o-cresol 2,4-dinitrophenol 2-nitrophenol 4-nitrophenol Pentachlorophenol Phenol 2,4,6-trichlorophenol Base -neutral compounds: Acenaphthene Acenaphthylene Anthracene Benzidine Benzo(a)anthracene Benzo(a)pyrene 3,4 benzofluoranthene Benzo(ghi)perylene Benzo(k)fluoranthene Bis (2-chloroethoxy) methane Bis (2-chloroethyl) ether Bis (2-chloroisopropyl) ether Bis (2-ethylhexyl) phthalate 4-bromophenyl phenyl ether Butyl benzyl phthalate 2-chloronaphthalene - 4-chlorophenyl phenyl ether Chrysene Di-n-butyl phthalate Di-n-octyl phthalate Dibenzo(a,h)anthracene 1,2-dichlorobenzene 1,3-dichlorobenzene 1,4-dichlorobenzene 3,3-dichlorobenzidine Diethyl phthalate Dimethyl phthalate 2,4-dinitrotoluene 2,6-dinitrotoluene 1,2-diphenylhydrazine Fluoranthene Fluorene Hexachlorobenzene Hexachlorobutadiene Hexachlorocyclo-pentadiene Hexachloroethane Indeno(1,2,3-cd)pyrene Isophorone Naphthalene Nitrobenzene N-nitrosodi-n-propylamine N-nitrosodimethylamine N-nitrosodiphenylamine Phenanthrene Pyrene 1,2,4-trichlorobenzene Page 5 of 8 Permit NCO021491 Reporting. Test results shall be reported on DWR Form -A MR-PPA1(or in a form approved by the Director) by December 31st of each designated sampling year. The report shall be submitted to the following address: NC DENR/ DWR/ Central Files,1617 Mail Service Center, Raleigh, North Carolina 27699-1617. A. (4) 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 H 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 TSupersedes Section D. (2.) and Section E. (5.)(a)l Beginning no later than 270 days from the effective date of 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 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.or web/ wq/admin/bog/ ipu/edmr Page 6 of 8 Permit NC0021491 - 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. 2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)l 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: hit:/1 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.)l 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]. A. (5) Nutrient Reopener for High Rock Lake This permit may be reopened and modified to implement nutrient requirements in accordance with any future TMDL and/or nutrient management strategy for High Rock Lake. Page 7 of 8 Permit NCO021491 Town of Mocksville - NCO021491 USGS Quad Number: D 16 NE Receiving Stream: Dutchman Creek Stream Class: C Subbasin: Yadkin 03-07-05 Page 8 of 8 Lat.: 35' 53' 33" Long.: 80' 30' 07" NORTH'CAROLINA FORSYTH COUNTY AFFIDAVIT OF PUBLICATION Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified, and authorized by law to administer oaths, personally appeared Charles Hornick, who being duly sworn, deposes and says: that he is Regional Accounting Manager of the Winston-Salem Journal, engaged in the publishing of a newspaper known as the Winston-Salem Journal, published, issued and entered as second class mail in the City of Winston-Salem, in said County and State: that he is authorized to make this affidavit and sworn statement: that the notice or other legal advertisement, a true copy of which is attached hereto, was published in the Winston-Salem Journal on the following dates: August 1, 2014 and that the said newspaper in which such notice, paper document, or legal advertisement was published was, at the time of each and every such publication, a newspaper meeting all the requirements and qualifications of Section 1-597 of the General Statutes of North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the General Statutes of North Carolina. This 1st day of August, 2014 (signature of person making affidavit) Sworn to and subscribed before me, this 1 st day of August, 2014 Notary u lid My Commission expires: September 28, 2015 E06Z FKIMALEY TARY PUBLICSYTH COUNTYF NORTH CAR LI •lUt SiC1N EXPIRE Noi Cabifti a kErrifgttrite Madtagemeitt Cbir�nl ani%NpDES MR; ; i617 Mfail $eryIOCetrtdr, Ralptglt=l 6276046A7 Nance o1 It eittto tsscie a NPD Wa tevYaikLitI The North C Commission ter discharge Wtitter coRtr will be accel date of this-n Of Water Resi RMLyj. VI LIM 41%0 ulYhwn � may hold a public hear,': �d}t deg E-� :of_ ubllc i elite 'ariti/or 10 orma- i PIC ,abbyie address. Inter- I 1e l?WR at, 512 N. Salis- 'reVieVv info�matlora on on D pdrmlts and on our website• http:// ►q/swp/pA; -nOdes/cal-1 807-004: The. Town of ` i.. requested' renewal of itC4,9 R Creek . WWTP• man s:reeK mine Yaamn-Yee Dee River Basin. } WSJ: August % 2014 , DENR/DWR FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NCO021491 Facility Information Applicant Facility Name: Town of Mocksville - Dutchman Creek WWTP Applicant Address: 171 Clement St., Mocksville, N.C. 27028 Facility Address: 295 Garwood Road, Mocksville, N.C. Permitted Flow 0.98 MGD Type of Waste: Domestic and industrial Facility/Permit Status: Ma or no EPA review Renewal Facility Classification III County: Davie Miscellaneous Receiving Stream: Dutchman Creek Regional Office: Winston-Salem Stream Classification: C USGS To o Quad: D16NE 303 d Listed?: No Permit Writer: Teresa Rodriguez Subbasin: 03-07-05 Date: 7 17 2014 Drainage Area mil : 108 r. <- Lat.: 35° 53' 33" Long.: 80° 30' 07" Sum Summer 7Q10 cfs 2.54 Winter 7Q10 (cfs): 11.95 Average Flow cfs : 106 IWC % : 37.5 Primary SIC Code: 4952 SUMMARY The Town of Mocksville has requested a permit renewal for the Dutchman Creek WWTP. Previous permit was issued May 1, 2010, expired on June 30, 2014 and has been administratively extended. The plant serves a population of approximately 4,655 people and one industrial user. The Town has contracted the plant's operations to Envirolink, Inc. The Dutchman Creek treatment plant consists of influent pump station with mechanical fine screen, flow splitter box, three aeration basins, three secondary clarifiers, two chlorination contact units, two dechlorination contact units, and aerobic digester. Mocksville currently has a pretreatment program with one non categorical SIU. It is recommended that the modified pretreatment program for the Dutchman Creek WWTP be continued in this upcoming permitting cycle. RECEIVING STREAM The facility discharges into Dutchman Creek, a class C water, in the Yadkin River subbasin 030705, HUC 03040101. Dutchman Creek is not listed in the NC 2014 303(d) list. COMPLIANCE SUMMARY: DMR data was reviewed for the period of January 2010 to June 2014. Data are summarized in Table 1. Table 1. DMR Data Summa Flow Temp DO pH Fecal BOD5 TSS NH3N TP TN TRC (MGD) (CO) (mg/1) (SU) Coliform (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (ug/1) /100 ml Average 0.435 16.5 8.17 6.6 4 3.1 3.7 0.31 8 15.6 20 Max 2.245 28 18.2 7.6 6000 35 38.6 13 19.5 51.6 50 Min 0.205 1 3.8 6 <1 <2 <2.5 <0.04 1.69 <025 <20 Monthly 0.98 6 summer 6-9 200 5 summer 30 2 summer 28 Average 5 winter - 10 winter 4 winter Limit The facility received five Notices of Violation (NOVs) for BOD5 between 2010 and 2014; three for weekly average limit exceedances and two for monthly average limit exceedances. In Mocksville-Dutchman Creek WWTP Fact Sheet NPDES Renewal Page 1 addition one NOV was issued in 2012 for not reaching the Dissolved Oxygen daily maximum average. TOXICITY TESTING: Current Requirement: Chronic Toxicity P/ F @ 37.5% at 0.98 MGD; January April July October. One failure was reported in May 2010. Since May 2010 they have passed all the tests. Recommendation: Renewal of existing chronic toxicity test @ 37% at 0.98 MGD in January April July October. INSTREAM MONITORING: The permit requires instream monitor for temperature and dissolved oxygen. Monitoring is waived in light of the Town's participation in the Yadkin - Pee Dee River Basin Association. The YPDRBA samples Dutchman Creek for DO, pH, conductivity, temperature, turbidity, and fecal coliform. Turbidity is the only parameter showing values above the water quality standard. REASONABLE POTENTIAL ANALYSIS: A Reasonable Potential Analysis (RPA) was conducted for cadmium, copper, cyanide, silver, and zinc. (See the attached RPA results for details.) Cyanide does not have reasonable potential to exceed the water quality standard therefore monitoring will be eliminated from the permit. Cooper, silver and zinc have reasonable potential but as action level standards they will continue to be monitored but there will be no limit in the permit. Cadmium has reasonable potential to exceed allowable limits. The limits for Cadmium will be modified in the permit., Current limits are 7 µg/l monthly average and 15 µg/l weekly average. These limits were calculated at the time the last permit was issued based on a flow of 0.68 MGD. Calculations with the current permitted flow of 0.98 MGD result in limits of 5.3 µg/l monthly average and 36 µg/ 1 weekly average. Following EPA's approval the Division is now calculating weekly average and daily average limits based on the 1 Q 10 flow instead of applying the acute criterion as the limit. As per 40 CFR 122.45 the limits shall be stated as monthly average and weekly average for publicly owned treatment works. MERCURY Mercury samples were collected for the annual pollutant scan but were analyzed under Method 245.1. The permit will include the requirement to use method 1631 to collect the PPA sample for mercury. Since the permitted flow is less than 1 MGD, the permit will not include the requirement to develop a Mercury Minimization Plan. PROPOSED CHANGES: Table 2. Effluents limits and monitoring conditions Pajwneteir Affected Change_ from Previous " Basis for Conditaton/.Change Permit Flow No change Design flow BOD5 No change Protection of stream DO NH3-N No change Protection of aquatic toxicity TSS No change 40 CFR 122, secondary treatment standards Fecal coliform, D.O., No change State WQ standards, T15A 2B .0200 H Total residual chlorine No change State WQ standards, T15A 2B .0200 Total Nitrogen No change T15A 02B .0508 Total Phosphorus No change T15A 02B .0508 Total Cadmium 5.3 µg/l monthly average Reasonable potential to exceed the 36 µ 1 weekly average WQS. Total Copper Monitoring frequency Reasonable potential to exceed water Total Zinc modified to quarterly quality standards, monitoring Total Silver frequency idance. Effluent Pollutant Scan Monitoring frequency 40 CFR 122, application requirements modified to three times per permit cycle Mocksville-Dutchman Creek WWTP Fact Sheet NPDES Renewal Page 2 Additional changes in permit: 1. A special condition was included in the permit with requirements for electronic submittal of DMRs. PROPOSED SCHEDULE FOR PERMIT ISSUANCE: Draft Permit to Public Notice: July 30, 2014 Permit Scheduled to Issue: September 15, 2014 STATE CONTACT: If you have any questions on any of the above information or on the attached permit, please contact Teresa Rodriguez at (919) 807-6387. NAME: �`��/`�( DATE: 1-7 REGIONAL OFFICE COMMENT: NAME: DATE: Mocksville-Dutchman Creek WWTP Fact Sheet NPDES Renewal Page 3 Table 1 Facility Name WWTP/WTP Class NPDES Permit outfall Flow, Gw (MGD) Receiving Stream Stream Class 7Q10s (cfs) 7010w (cfs) 3002 (cfs) QA (cfs) 1 Q10s (cfs) Data Source(s) ❑ CHECK TO APPLY MODEL To appy Model IWC %: Flow, Qw (MGD) entered adjust 7Q10s (cfs) value until chronic IWC % obtained. 1Q10s (cfs) defined by program. 2014 Freshwater RPA - 95% Probability/95% Confidence MAXIMUM DATA POINTS = 58 ®REQUIRED DATA ENTRY MISSING/INSUFFICIENT DATA 0 act Information Table 2. Parameters of Concern ❑ CHECK IF HQW OR ORW WQS Town of Mocksville Dutchman Creek NC0021491 001 0.980 Dutchman Creek C 2.54 11.95 35.00 106.00 r Follow directions for data entry. In some cases a. comment menu list the available choices or a dropdown menu will provide a list you may select from. Error message occur if data entry does not meet input criteria. - - Panel Par02 Par03 Par04 ®Fares Par06 Par07 Pares Faroe Par10 Par11 Par12 Par13 Par14 Fer16 Parl6 Par17 Parts Par19 Par20 Par21 Par22 Name Type Chronic M.dlr.e, Acute PQL Units a Arsenic C 50 FW ug/L _ Arsenic -- C 10 HHM/S ug/L L -' Beryllium NC 6.5 FW ' ug/L ❑ 'Cadmium NC 2 FW 15 ug/L ❑ Chlorides (AL) - NC 23C FVJ mg/L Chlorinated Phenolic Compounds NC 1 A ug/L Total Phenolic Compounds NC 300 A ug/L ..Chromium NC 50. FW 1,022.. ug/L ❑ "Copper(AL) NC 7 --FW 7.3 - ug/L ❑ Cyanide NC 5 FW 22 10 ug/L_ ❑ Fluoride NC 1,800 FIN 24000 ug/L, ❑ Lead NC 25 FW 33.8 ugJLJ❑ Mercury NC 12 FW 0.5 ri ❑ Molybdenum NC 2000 HH - u"A ❑ - Nickel NC 88 FW 261 ug/_ ❑ Selenium NC 5 FW 56 ug/1 ❑ Silver (AL) NC 0.06 FW 1.23 UgAl ❑ Zinc (AL) NC 50 FW 67 ug/L ❑ fluoride NC 24000 mg/L ❑ 13 ?DATA? 21491 RPA.xlsm, input 7/22/2014 Town of Mocksville 2014 Freshwater RPA - 95% Probability/95% Confidence NCO021491 MAXIMUM DATA POINTS = 58 Qw (MGD) = 0.98 WWTP/WTP Class: Dutchman Creek 1 Q 1 OS (cfs) = 2.13 IWC ® 1 Q 1 OS = 41.63% 7Q 1 OS (cfs) = 2.54 IWC @ 7Q 1 OS = 37.42% 7QIOW (cfs) = 11.95 IWC a 7Q10W = 11.28% 30Q2 (cfs) = 35.00 IWC @ 30Q2 = 4.16% Avg. Stream Flow, QA (cfs) = 106.00 IWC @ QA = 1.41% Receiving Stream: Dutchman Creek Stream Class: C Outfall 001 Qw = 0.98 MCD PARAMETER TYPE STANDARDS & CRITERIA (2) REASONABLE POTENTIAL RESULTS RECOMMENDED ACTION (1) a z ' NC WQS / Applied %2 FAV / n Det. Max Pred Allowable Cw Chronic Standard Acute Cw Acute: 36.0 RP, limit Cadmium NC 2 FW(7Q 1 Os) 15 ug/L 51 11 14.7 _ _ _ _ _ Chronic: _----- 5.3 -- --------------------------- 1 values > Allowable Cw Acute: 17.5 Copper (AL) NC 7 FW(7Q 1 Os) 7.3 ug/L 54 24 115.4 RP, action level standad, quarterly monitoring _ _ _ Chronic:----- 18.7 -- --------------------------- 9 values > Allowable Cw Cyanide NC 5 FW(7Q 1 Os) 22 10 ug/L 30 12 5.0 Acute: 52.8 No RP, eliminate monitoring _ _ _ _ _ _ Chronic:----- 13.4 -- --------------------------- No value > Allowable Cw Sliver (AL) NC 0.06 FW(7Q 1 Os) 1.23 ug/L 53 7 10.300 Acute: 2.955 RP, action level standad,monitor quarterly _ _ _ _ _ Chronic:-----U.160-- --------------------------- 53 values > Allowable Cw Acute: 160.9 Zinc (AL) NC 50 FW(7Q 1 Os)' 67 ug/L 53 50 241.7 . RP, action level standad,monitor quarterly _ _ __ -----_ _ -- Chronic:133.E --------------------------- 5 values > Allowable Cw Page 1 of 1 21491 RPA.xism, rpa 7/22/2014 REASONABLE POTENTIAL ANALYSIS 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 28 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Cadmium Date Data BDL=1/2DL Results 5 5 Sid Dev. 5, 5 Mean 5 5 C.V. 5 5 n 5 5 5 5 Mutt Factor= < 5 2.5 Max. Value < 5 2.5 Max. Pmd Cw < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 5 2.5 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 5 2.5 < 2 1 < 2 1 < 2 1 < 2 1 14 14 < 1.3 0.65 2 2 0.132 0.132 < 2 1 < 1.5 0.75 2 2 < 1.6 0.8 2 2 < 1 0.5 < 1 0.5 < 1 0.5 1 0.5 < 1 0.5 < 1 0.5 1 0.5 < 1 0.5 < 1 0.5 < 1 0.5 < 1 0.5 2.2614 0.9644 51 1.05 14.0 ug/L 14.7 ug/L 9 U. Date Data BDL=1/2DL Results 1 10 10 Std Dev. 2 10 10 Mean 3 10 10 C.V. 4 10 10 n 5 10 10 6 10 10 Mutt Factor= 7 < 10 5 Max. Value 8 < 10 5 Max. Fred Cw 9 < 10 5 10 15 15 11 < 10 5 12 < 10 5 13 < 5 2.5 14 13 13 15 < 10 5 16 < 10 5 17 < 10 5 18 < 10 5 19 < 10 5 20 12 12 21 12 12 22 < 10 5 23 < 10 5 24 < 10 5 25 5 15 26 1 11 27 11 11 28 < 10 5 29 13 13 30 < 10 5 31 < 10 5 32 10 10 33 7 7 34 7 7 35 < 5 2.5 36 < 50 25 37 50 50 38 111 111 39 < 50 25 40 < 50 25 41 < 50 25 42 < 50 25 43 < 50 25 44 16 16 45 < 10 5 46 23 23 47 11 11 48 11 11 49 < 10 5 50 < 10 5 51 14 14 52 < 10 5 53 < 10 5 54 < 10 5 55 56 57 58 12.7222 1.2652 54 1.04 111.0 ug/L 115.4 ug/L 21491 RPA.Asm, data 7/22/2014 N REASONABLE POTENTIAL ANALYSIS 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Date Data BDL=1/2DL Results 5 5 Sid Dev. 5 5 Mean 5 5 C.V. 5 5 n 5 5 5 5 Mult Factor= 5 5 Max. Value 5 5 Max. Pred Cw 5 5 5 5 5 5 5 5 < 5 5 < 5 5 5 5 5 5 5 5 < 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 < 5 5 5 5 5 5 5 5 5 5 axta 5.00 0.0000 30 1.00 5.0 ug/L 5.0 ug/L 17 Silver (AL) Date Data BDL=1/2DL Results 1 10 10 Sid Dev. 2 10. 10 Mean 3 < 10 5 C.V. 4 10 10 n 5 10 10 6 10 10 Mult Factor= 7 < 10 5 Max. Value 8 < 10 5 Max. Pmd Cw 9 < 10 5 10 < 10 5 11 < 10 5 12 < 10 5 13 < 10 5 14 < 10 5 15 < 10 5 16 < 10 5 17 < 10 5 18 < 10 5 19 < 10 5 20 < 10 5 21 < 10 5 22 < 10 5 23 < 10 5 24 < 10 5 25 < 10 5 26 < 10 5 27 < 10 5 28 < 10 5 29 < 10 5 30 < 10 5 31 < 10 5 32 0.195 0.195 33 10 10 34 < 2.5 - 1.25 35 < 2.5 1.25 36 < 2.5 1.25 37 < 1 0.5 38 < 2.5 125 39 < 2.5 125 40 < 2.5 1.25 41 < 2.5 1.25 42 < 3 1.5 43 < 5 2.5 44 < 5 2.5 45 < 5 2.5 46 < 5 2.5 47 < 5 2.5 48 < 5 2.5 49 < 5 2.5 50 < 5 2.5 51 < 5 2.5 52 < 5 2.5 53 < 5 2.5 54 55 56 57 58 4.3103 0.5998 53 1.03 10.000 ug/L 10.300 ug/L _2_ 21491 RPA.xlsm, data 7/22/2014 REASONABLE POTENTIAL ANALYSIS 18 Data Data 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 Zinc (AL) BDL=112DL 71 71 87 87 62 62 54 54 84 84 50 50 69 69 59 59 67 67 144 144 56 56 48 48 72 72 79 79 109 109 56 56 87 87 106 106 85 85 119 119 80 80 72 72 71 71 69 69 88 88 72 72 84 84 114 114 140 140 5 2.5 57 57 76 76 65 65 80 80 70 70 90 90 187 187 70 35 70 70 120 120 106 106 25 12.5 61 61 55 55 90 90 237 237 115 115 77 77 86 86 168 168 89 89 37 37 114 114 Use'PASTE SPELL a0oei IMn'CAP Maximum dan Results Sid Dev. 39.6488 Mean 84.0377 C.V. 0.4718 n 53 Mult Factor = 1.02 Max. Value 237.0 ug/L Max. Pred Cw 241.7 ug/L -3- 21491 RPA.xlsm, data 7/22/2014 Ambient Monitoring System Station NCDENR, Division of Water Quality Basinwide Assessment Location: DUTCHMAN CRK AT US 64 NR MOCKSVILLE Station #: Q3105000 Hydrologic Unit Code: 03040101 Latitude: 35.88107 Longitude: -80.50118 Stream class: C Agency: YPDRBA NC stream index: 12-102-(2) Time period: 01/24/2006 to 12/06/2010 # # Results not meeting EL Percentiles results ND EL # % %Conf Min 10th 25th 50th 75th 90th Max Field D.O. (mg/L) 85 0 <4 0 0 6.4 6.8 7.1 8.1 10.2 11.6 12.8 85 0 <5 0 0 6.4 6.8 7.1 8.1 10.2 11.6 12.8 pH (SU) 85 0 <6 0 0 6.5 6.9 7 7.1 7.2 7.3 7.3 85 0 >9 0 0 6.5 6.9 7 7.1 7.2 7.3 7.3 Spec. conductance 85 0 N/A 90 104 116 129 146 165 302 (umhos/cm at 25°C) Water Tcmperaturc (°C) 85 0 >32 0 0 2.8 6 9.3 18.3 22.6 24 25 Other Turbidity (NTU) 60 0 >50 3 5 3.7 6.2 10.1 14.5 22 37.4 240 Fecal Coliform Screening(#/100mL) # results: Ceomean # > 400: % > 400: %Conf- 4 160.7 0 0 Key: # result: number of observations # ND: number of observations reported to be below detection level (non -detect) EL: Evaluation Level; applicable numeric or narrative water quality standard or action level Results not meeting EL: number and percentages of observations not meeting evaluation level %Conf : States the percent statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Coiiform) Stations with less than 10 results for a given parameter were not evaluated for statistical confidence PPIA-1 - NCO ZIg9) slZoly cc: Central Files WSRO hi�7 oF.Y.yI l►:\ y �1;7 �17,7III:)�f17 7 �CK17uTlu 1 �i`►117:YY [�)►1 To: Attention: Tom Belnick NPDES Complex Permitting Unit Permit No. NCO021491 County: Davie PART I -GENERAL INFORMATION 1. Permiee Address: Mrs. Christine Bralley, Manager Town of Mocksville 171 Clement Street Mocksville, NC 27028 Facility Address: Mocksville's Dutchman Creek POTW 295 Garwood Road Mocksville, 27028 2. Date of Investi ag tion: May 15, 2014 RECEIVENDENR/DWR MAY 222014 Water Qrmittnngs er tbn 3. Report Prepared by: Mike Mickey, Environmental Program Consultant 4. Contact & Phone #.: Scott Bryan, ORC/Envirolink, Inc, phone: 336-503-2383 (cell) 5. Directions to Site: Take Hwy 64 East out of Mocksville. Turn left onto Garwood Road approximately 0.4 miles before the Hwy 64 bridge over Dutchman Creek. Proceed on Garwood approximtely 0.4 miles to the end of the road. Turn left onto the gravel drive just past the mailbox for house number 293. Proceed 0.4 miles to the WWTP. 6. DischargePoint: Latitude: 35' 53' 32" Longitude: 800 30' 07" (note: these coordinates were taken at discharge point) U.S.G.S.QuadName: Mocksville,NC (D-16-NE) 7. Receiving stream or affected surface waters: Dutchman Creek a. Classification: C b. River Basin and Subbasin No.: 03-07-05 C. Describe receiving stream features and pertinent downstream uses: The facility discharges into Dutchman Creek. The confluence with the Yadkin River is approximately 8.0 river miles downstream of the outfall. Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Current permitted/design capacity of the POTW? The permitted flow is 0.98 MGD. A review of the DMRs for calendar year 2013 shows a daily average flow of 0.413 MGD. b. Date(s) of construction activities allowed by previous Authorizations to Construct issued in the previous two years. None in last 5 years. C. Please provide a description of existing or substantially constructed wastewater treatment facilities: The 0.98 MGD permitted facility consists of the following: * Influent lift station with mechanical screening * Flow splitter box with chemical addition * three influent flow meters and parshall flumes * three manual bar screens * three aeration basins with two surface aerators each * three secondary clarifiers * one 180,000 gal. aerobic digester with surface mixer (two other digeseters not used) * gas disinfection * two contact chambers * gas dechlorination * 400 kW generator d. Please provide a description of proposed wastewater treatment facilities. N/A e. Possible toxic impacts to surface _waters: None known. The facility has been compliant with final NPDES effluent limits for the period January 2013 through March 2014. All chronic toxicity tests of the effluent from 2011 to present have passed. f. Pretreatment ProgLam (POTWs only): The Town of Mocksville's pretreatment program is now active since House of Raeford has started up a chicken processing operation in the bankrupt Townsend Farms facility. 2. Residuals handling and utilization/disposal scheme: Digested solids from the one aerobic digester are land applied by EMA Resources on approved fields covered by non -discharge permit No. WQ0003351. Page 2 PART III - EVALUATION AND RECOMMENDATIONS WSRO recommends renewal of the Mocksville Dutchman Creek NPDES permit. Just FYI - • A copy of the May 15, 2014 compliance inspection letter is attached. Report Preparer & Da Assistant Regional Super% r & Date Page 3 qii/ CJ / / Z01712 11: t7 JJO 1910440 T CREEK sir 1 r1r m- V.d/ V %.► I .J 1 1� 1 � . I0 N ------ _-- _ __ _.�, EFFLUENT ir POINT *_ PARSHALL FLUME DECHLOR CONTACT 600 GAL �1 DECHLOR iv '1 CONTACT r F�' 600 GAL EFFLUENT MANHOLE ' CHLORINE I RETURN AC71VATM SLUDGE CONTACT I AEROBIC DIGESTER 1&71K GAL J NEW CHLORINE CONTACT 1&7K GAL r id' �� CHEM X ��% QJ� \VfIL IL fi d m< . 1 md� QrdN �� 0 0PS � At 3 Ap az x U 10 t t_ f W- 1 CLARIFIER 6r 6" WAS ��- ---4y- v --P---- --fir- —A- I 16 WAS f T I I I TI I T f I� Z f l l �' t i I I i W I oc 1� P F� 3: I v. �� is I; �v iQ III f dxlow III oc or Q oc W� N I `° �o� C4< f� 3o va I z; i I I It � I II I } �L J L— 4 STORAG d a f a NEW r'v• �� ' ' I i�r �� 3:: o INFLUENT V m Q Z a Q� h i;.' PUMP a � a � 6- A GV. STA7ION 0G L 28K G ` ' pV 8r _ .�1► STORAGE o� t �N_ _ ~ I 10- / TIT— — 10_ NEW AEROBIC — — — — — — -- -o— — -- •0►-- — — — _. _ _/ i _ . -. J DIGESTER 0.968 IuIGO AVG. �1- NEW SPUTTER SWDGE TO LAND APPLICATION GREY ENGINEERING, INC. TOWN OF Clv9 veyi Design and Surng MOCKSVILLE P.O. Box 9 1odcswoo. N.C. 2702E � (336)731—M10 DUTCHMA 1NW'FP DE= �r aeY: Q eu to Pm rya.: 1o2.ttr.x PROCESS SCHEMATIC FOR - STMP ESfI�I 8 & 81xLNi0 DATE t0 1 OF 1 080' 31' 00.00" W 080' 30' 30.00" W 080, 30' 00.00" NJ 080° 29' 30.00" W r ttl 3 I — N r r z o • o 'Discharge Point 3 53' 32 r 8 30' 07" j --1 vu�-, L� WWTPsite A 'ood Road w " 08w 30' 30A0" W I i Datum: MAD27 APoW E X )V".y e-lt+h November 25, 2013 NCDENR/DWQ Attn: NPDES Unit 1617 Mail Service Center Raleigh, NC 27699-1617 Subject: NPDES Permit Renewal -Dutchman Creek NCO021491 Dear Permitting Department: ENVIROLINK DEC 0 2 2013 On behalf of the Town of Mocksville, Envirolink Inc. appreciates the opportunity to submit the NPDES renewal application package. Please find enclosed (1) one original and (2) two copies of the following: • EPA Form 3510-2A • Facility Map and Outfall location • WWTP Process Schematic • Sludge Handling Plan In discussions with the Division of Water Quality, and since the Town of Mocksville has not had a pre-treatment program since 2011, the Division stated that there was no need to submit Part D and Part E of the application. If Envirolink Inc. can be of any further assistance or additional information is needed, please contact me at 252-235-4900. Sincerely, csl Z�4�_ Heather Adams Director of Operations Envirolink, Inc. 0 Envirolink, Inc. 3c-- p^aVnee In 9f dq dfanW PO Box 670, Bailey, North Carolina 27807 252-235-4900(phone) 252-235-2132(fax) FACILITY NAME AND PERMIT NUMBER: Dutchman Creek WWTP, NCO021491 FORM 2A NPDES APPLICATION OVERVIEW PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin -Pee Dee River Form 2A has been developed in a modular format and consists of a `Basic Application Information" packet and a "Supplemental Application Information" packet. The Basic Application Information packet is divided into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental Application Information packet. The following items explain which parts of Form 2A you must complete. BASIC APPLICATION INFORMATION: A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12. B. Additional Application Information for Applicants with a Design Flow 2 0.1 mgd. All treatment works that have design flows greater than or equal to 0.1 million gallons per day must complete questions BA through B.6. C. Certification. All applicants must complete Part C (Certification). SUPPLEMENTAL APPLICATION INFORMATION: D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets one or more of the following criteria must complete Part D (Expanded Effluent Testing Data): 1. Has a design now rate greater than or equal to 1 mgd, 2. Is required to have a pretreatment program (or has one in place), or 3. Is otherwise required by the permitting authority to provide the information. E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing Data): 1. Has a design flow rate greater than or equal to 1 mgd, 2. Is required to have a pretreatment program (or has one in place), or 3. Is otherwise required by the permitting authority to submit results of toxicity testing. F. Industrial User Discharges and RCRAICERCLA Wastes. A treatment works that accepts process wastewater from any significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges and RCRAICERCLA Wastes). SIUs are defined as: 1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and 40 CFR Chapter I, Subchapter N (see instructions); and 2. Any other industrial user that: a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain exclusions); or b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic capacity of the treatment plant; or C. Is designated as an SIU by the control authority. G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer Systems). ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION) EPA Foam 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 1 of 22 J. FACIUTY NAME AND PERMIT NUMBER: RIVER BASIN: PERMIT ACTION REQUESTED: Dutchman Creek WWTP, NCO021491 Yadkin -Pee Dee Renewal River BASIC APPLICATION INFORMATION _ PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS: All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet. A.I. Facility Information. Facility Name Dutchman Creek WWTP Mailing Address 171 Clement Street Mocksville, NC 27028 Contact Person Christine Brallev Title Town Manager Telephone Number (336) 753-6700 Facility Address 295 Garwood Road (not P.O. Box) Mocksville. NC 27028 A.2. Applicant Information. If the applicant is different from the above, provide the following: Applicant Name Town of Mocksville c/o Envirolink. Inc. Mailing Address PO Box 670 Bailey, NC 27807 Contact Person Heather Adams Title Director of Operations Telephone Number (252) 2354900 Is the applicant the owner or operator (or both) of the treatment works? ❑ owner I@ operator Indicate whether correspondence regarding this permit should be directed to the facility or the applicant. ® facility 19 applicant A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works (include state -issued permits). NPDES NCO021491 PSD UIC Other RCRA Other A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.). Name Population Served Type of Collection System Ownership Town of Mocksville 4655 Separate Municipal Total population served 4655 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 2 of 22 FACIUTY NAME AND PERMIT NUMBER: RIVER BASIN: PERMIT ACTION REQUESTED: Dutchman Creek WWTP Renewal � Yadkin -Pee Dee NCO021491 River A.5. Indian Country. a. Is the treatment works located in Indian Country? ❑ Yes ® No b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows through) Indian Country? ❑ Yes ® No A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period with the 12t' month of 'this year" occurring no more than three months prior to this application submittal. a. Design flow rate 0.98 mgd Two Years Ago Last Year This Year b. Annual average daily flow rate 0.423 0.354 0.416 C. Maximum daily flow rate 1.240 1.420 2.009 A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent contribution (by miles) of each. ® Separate sanitary sewer 100 % ❑ Combined storm and sanitary sewer % A.8. Discharges and Other Disposal Methods. a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No If yes, list how many of each of the following types of discharge points the treatment works uses: I. Discharges of treated effluent 1 ii. Discharges of untreated or partially treated effluent 0 Ill. Combined sewer overflow points 0 iv. Constructed emergency overflows (prior to the headworks) 0 V. Other 0 b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments that do not have outlets for discharge to waters of the U.S.? ❑ Yes ® No If yes, provide the following for each surface impoundment: C. d. Location: Annual average daily volume discharge to surface impoundment(s) Is discharge ❑ continuous or ❑ intermittent? Does the treatment works land -apply treated wastewater? If yes, provide the following for each land application site: Location: Number of acres: Annual average daily volume applied to site: Is land application ❑ continuous or ❑ intermittent? Does the treatment works discharge or transport treated or untreated wastewater to another treatment works? mgd ❑ Yes ® No mgd ❑ Yes ® No EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 3 of 22 FACILITY NAME AND PERMIT NUMBER: RIVER BASIN: Dutchman Creek WWTP 3 PERMIT ACTION REQUESTED: Yadkin -Pee Dee NCO021491 Renewal River If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works (e.g., tank truck, pipe). If transport is by a party other than the applicant, provide: Transporter Name Mailing Address Contact Person Title Telephone Number ( } For each treatment works that receives this discharge, provide the following: Name Mailing Address Contact Person Title Telephone Number ( } If known, provide the NPDES permit number of the treatment works that receives this discharge Provide the average daily flow rate from the treatment works into the receiving facility. mgd e. Does the treatment works discharge or dispose of its wastewater in a manner not included in A.8. through A.8.d above (e.g., underground percolation, well injection): ❑ Yes ® No If yes, provide the following for each disposal method: Description of method (including location and size of site(s) if applicable): Annual daily volume disposed by this method: Is disposal through this method ❑ continuous or ❑ intermittent? EPA Form 3510-2A (Rev.1-99). Replaces EPA forms 7550-6 & 7550-22. Page 4 of 22 FACILITY NAME AND PERMIT NUMBER: RIVER BASIN: PERMIT ACTION REQUESTED: Dutchman Creek WWTP Yadkin -Pee Dee NCO021491 Renewal River WASTEWATER DISCHARGES: If you answered "Yes" to question A.8.acomplete questions A.9 through A.12 once for each outfall (including bypass points) through which effluent Is discharged. Do not Include Information on combined sewer overflows In this section. If you answered "No" to question A.8.a. go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd." A.9. Description of Outfall. a. Outfall number 001 b. Location Mocksville 27028 (City or town, if applicable) (Zip'Code) Davie NC (County) (State) 35°53'33" 80"30'07" (Latitude) (Longitude) C. Distance from shore (if applicable) NA ft. d. Depth below surface (if applicable) NA ft. e. Average daily flow rate 0.416 mgd f. Does this outfall have either an intermittent or a periodic discharge? ❑ Yes ® No (go to A.9.g.) If yes, provide the following information: Number f times per year discharge occurs: Average duration of each discharge: Average flow per discharge: mgd Months in which discharge occurs: g. Is outfall equipped with a diffuser? ❑ Yes ® No A.10. Description of Receiving Waters. a. Name of receiving water Dutchman Creek b. Name of watershed (if known) United States Soil Conservation Service 14-digit watershed code (if known): C. Name of State Management/River Basin (if known): Yadkin -Pee Dee River Basin United States Geological Survey 8-digit hydrologic cataloging unit code (if known): d. Critical low flow of receiving stream (if applicable) acute cis e. Total hardness of receiving stream at critical low flow (if applicable): chronic cis mgA of C8CO3 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 5 of 22 FACILITY NAME AND PERMIT NUMBER: RIVER BASIN: PERMIT ACTION REQUESTED: Dutchman Creek WWTP Yadkin -Pee Dee Renewal NCO021491 River A.11. Description of Treatment a. What level of treatment are provided? Check all that apply. ® Primary ® Secondary ❑ Advanced ❑ Other. Describe: b. Indicate the following removal rates (as applicable): Design BOOS removal or Design C8005 removal % Design SS removal % Design P removal % Design N removal % Other % C. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe: Chlorine If disinfection is by chlorination is dechlorination used for this outfall? ® Yes ❑ No Does the treatment plant have post aeration? N Yes ❑ No A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not Include Information on combined sewer overflows in this section. All information reported must be based on data collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QAIQC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart. Outiall number: 001 MAXIMUM DAILY VALUE AVERAGE DAILY VALUE PARAMETER Value Units Value Units Number of Samples PH (Minimum) 6.0 S.U. pH (Maximum) 7.5 SM. Flow Rate 1.240 MGD 0.423 MGD 365 Temperature (Winter) 10 °C 10 °C 3 Temperature (Summer) 25 °C 24 °C 3 ' For pH please report a minimum and a maximum daily value MAXIMUM DAILY AVERAGE DAILY DISCHARGE POLLUTANT DISCHARGE ANALYTICAL ML/MDL Conc. Units Conc. Units Number of METHODSamples CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS BIOCHEMICAL OXYGEN GODS 5.2 m /L 2.0 m /L 40 SM5210B 2.0 DEMAND (Report one) CBOD5 NA NA NA NA NA NA NA FECAL COLIFORM 290 #/100m1 2.8 #1100ml 40 SM9222D 1 TOTAL SUSPENDED SOLIDS (TSS) 1.9 m IL 1.7 m /L 40 SM2540D 25.0 END OF PART A. REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 6 of 22 FACILITY NAME AND PERMIT NUMBER: RIVER BASIN: Dutchman Creek WWTP PERMIT ACTION REQUESTED: Yadkin -Pee Dee NCO021491 Renewal River BASIC APPLICATION INFORMATION PART B. ADDITIONAL APPLICATION INFORM1.ATION FOR APPLICANTS WITH A DESIGN FLOW GREATER THAN OR EQUAL TO 0.1 MGD (100,000 gallons per day). All applicants with a design flow rate z 0.1 mgd must answer questions BA through B.6. All others go to Part C (Certification). B.1. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration. 25,000 gpd Briefly explain any steps underway or planned to minimize inflow and infiltration. Smoke test/CCTV to find I&I sources and make repairs as necessary B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire area.) a. The area surrounding the treatment plant, including all unit processes. b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which treated wastewater is discharged from the treatment plant. Include outfalis from bypass piping, if applicable. c. Each well where wastewater from the treatment plant is injected underground. d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within % mile of the property boundaries of the treatment works, and 2) listed in public record or otherwise known to the applicant. e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed. f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail, or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed. B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g., chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow rates between treatment units. Include a brief narrative description of the diagram. B.4. Operation/Maintenance Performed by Contractor(s). Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a contractor? ® Yes ❑ No If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional pages if necessary). Name: Envirolink, Inc. Mailing Address: PO Box 670 Bailey. NC 27807 Telephone Number: (252) 235-4900 Responsibilities of Contractor: Operation's Management Firm for the Dutchman Creek WWTP B.S. Scheduled Improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question 13.5 for each. (If none, go to question 13.6.) a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule. b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies. ❑ Yes ❑ No EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 7 of 22 FACILITY NAME AND PERMIT NUMBER: RIVER BASIN: Dutchman Creek WWTP PERMIT ACTION REQUESTED: Yadkin -Pee Dee NCO021491 Renewal River C. If the answer to 6.5.b is 'Yes," briefly describe, including new maximum daily inflow rate (if applicable). d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as applicable. Indicate dates as accurately as possible. Schedule Actual Completion Implementation Stage MM/DD/YYYY MM/DD/YYYY - Begin Construction I 1 1 I - End Construction I 1 I 1 - Begin Discharge 1 1 1 1 - Attain Operational Level e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? ❑ Yes ❑ No Describe briefly: B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY). Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include Information on combine sewer overflows In this section. All Information reported must be based on data collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be based on at least three pollutant scans and must be no more than four and on -half years old. Outfall Number: 001 MAXIMUM DAILY AVERAGE DAILY DISCHARGE DISCHARGE ANALYTICAL POLLUTANT METHOD MUMDL Conc. Units Conc. Units Number of Samples CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS AMMONIA (as N) 0.2 mg/L 0.08 mg/L 3 350.1 0.045 CHLORINE (TOTAL RESIDUAL, TRC) 30 ug/L 23.3 ug/L 3 4500cl-g <17 DISSOLVED OXYGEN 7.54 mg1L 7.51 mg/L 3 4500-0-C TOTAL KJELDAHL 1.5 mg/L 0.83 mg/L 3 351.2 0.16 NITROGEN (TKN) NITRATE PLUS NITRITE 30.5 mg/L 21.79 mg1L 3 353.2 1.2 NITROGEN OIL and GREASE <5.0 mg/L <5.0 mg/L 3 1664A 3.0 PHOSPHORUS (Total) 4.2 mg/L 3.12 mg/L 3 365.4 0.024 TOTAL DISSOLVED SOLIDS 350 mg/L 260 mg/L 3 2540C 10 (TDS) OTHER END OF PART B. ' REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 8 of 22 9'FACILITY NAME AND PERMIT NUMBER: RIVER BASIN: Dutchman Creek WWTP PERMIT ACTION REQUESTED: Yadkin -Pee Dee NCO021491 Renewal River BASIC APPLICATION INFORMATION PART C. CERTIFICATION All applicants must complete the Certification Section. Refer to Instructions to determine who Is an officer for the purposes of this certification. All applicants must complete all applicable sections of Form 2A, as explained In the Application Overview. Indicate below which parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed Form 2A and have completed all sections that apply to the facility for which this application is submitted. Indicate which parts of Form 2A you have completed and are submitting: ® Basic Application Information packet Supplemental Application Information packet: ❑ Part D (Expanded Effluent Testing Data) ❑ Part E (Toxicity Testing: Blomonhoring Data) -❑ Part F (Industrial User Discharges and RCRA/CERCLA Wastes) ❑ Part G (Combined Sewer Systems) ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION. 1 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 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 fine and imprisonment for knowing violations. Name and official title Jiristlne Bralle4- Mocksville Town Manager f� Signature Telephone number 1336) 753-6700 Date signed 11- 1 z ' A013 Upon request of the permitting authority, you must submit any other information necessary to assure wastewater treatment practices at the treatment works or identify appropriate permitting requirements. SEND COMPLETED FORMS TO: NCDENR/ DWQ Attn: NPDES Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 9 of 22 FACILITY NAME AND PERMIT NUMBER: RIVER BASIN: PERMIT ACTION REQUESTED; Dutchman Creek WWTP Yadkin -Pee Dee Renewal NCO021491 River SUPPLEMENTAL APPLICATION INFORMATION PART: F. INDUSTRIAL USER DISCHARGES AND RCRAICERCLAWASTES All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must complete part F. GENERAL INFORMATION: F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program? ® Yes ❑ No F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users-(CIUs). Provide the number of each of the following types of industrial users that discharge to the treatment works. a. Number of non -categorical SIUs. 1 b. Number of ClUs. 0 SIGNIFICANT INDUSTRIAL USER INFORMATION: Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.6 and provide the information requested for each SIU. F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages as necessary. Name: House of Raeford Mailing Address: 251 Eaton Drive Mocksville, NC 27028 F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge. Cooked Chicken -Same Process as Townsend had at this location F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's discharge. Principal product s): Cooked Chicken Raw materal(s): Processed Chicken F.6. Flow Rate. a. Process wastewater flaw rate. Indicate the average daily volume of process wastewater discharge into the ccllection system in gallons per day (gpd) and whether the discharge is continuous or intermittent. 30,000 gpd ( continuousor X intermittent) b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent. 2,300 gpd ( continuousor X intermittent) F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following: a. Local limits ® Yes ❑ No b. Categorical pretreatment standards ❑ Yes ® No If subject to categorical pretreatment standards, which category and subcategory? EPA Form 3510-2A (Rev. 1.99). Replaces EPA forms 7550-6 & 7550-22. Page 20 of 22 FACILITY NAME AND PERMIT NUMBER: Dutchman Creek WWTP NCO021491 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin -Pee Dee River F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g., upsets, Interference) at the treatment works in the past three years? p Yes ® No If yes, describe each episode. Past SIU has been closed since 2011. House of Raeford will utilize the existing ui ment with some modifications. We have not noticed any interferences at the W WTP since they began operation. RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE: F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, call or dedicated pipe? O Yes ® No (go to F.12) F.10. Waste transport. Method by which RCRA waste is received (check all that apply): ❑ Truck ❑ Rail ❑ Dedicated Pipe F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units). EPA Hazardous Waste Number Amoun urfits CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATIONICORRECTIVE ACTION WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER: F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities? ❑ Yes (complete F.13 through F.15.) 21 No F.13. Waste Origin. Descnbe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to odgniate in the next five years). F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if known. (Attach additional sheets if necessary.) F.15. Waste Treatment. a. Is this waste treated (or will be treated) prior to entering the treatment works? ❑ Yes ❑ No If yes, describe the treatment (provide information about the removal efficiency): b. Is the discharge (or will the discharge be) continuous or intermittent? ❑ Continuous ❑ Intermittent If intermittent, describe discharge schedule. END OF PART F. REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS OF FORM 2A YOU MUST COMPLETE EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 21 of 22 a8i a rr levy l l : Zy JJb !31 bJ40 UKr- v f \iREEi a �3 'a 10 Q---- ® NEW - - _ - _ - _ _ EFFLUENT -� �OF DECHLOR SAt!►iP NG 14" _ _ - N CONTACT POINT LOCATION oEaoR _ 60o GAL CONTACT PARSHALL FLUME 600 GAL 1 NEW EFFLUENT MANHOLE CHLORINE I CHLORINE RETURN ACTIVATED SLUDGE CONTACT I CONTACT AEROBIC DIGESTER 18.7K GAL I 1&7K GAL i 12` � id' ` a �I �� CHEM •- % CA a ai a n. W Q SCUMw Ix QQ �� PS �'�Q- -O. 0 ISO i I o 1 CLARIFIER ' 6" 6` WAS 1 i 6 WAS I I T M ac � 00 Q i :e• i i �oY CAW I i N i j }�L O L _ I 1I+i Iz Ti I Ip 0 Iw Q� i11 o �� I NQ p� Z� i1I i I III I,* � aSLUDGE 4 - � _ 6" RAS i _W s =W Inm to •a NEW INFLUENT v m a 3 l 6 a z a PULP �- STATION 28K GAL a 28K GAL n. Git�40 SLUDGE ` STORAGE o� 1% TIT w _ _ _. _ _ _ _ iC .-.�- 0 ) DIGESTER 0.968 MGD AVG, FLOW NEW SPUTTER SLUDGE TO LAND APPLICATION GREY ENGINEERING, INC. TOWN 0.F MOCKSVILLE Civil Daslgn and Survaylnq 0-11 P.O. Box 9 Modcsvine. N.C. 27028 � 9� (336)ni-211••° DUTCHMA WWTP SH iSR"m Dr. CL Bum PRO4 NOL: IOZIGIx PROCESS SCHEMATIC FOR STMP -DES= BY: Q StAL D I DATE io/m/W I I 10F 1 D. Town of Mocksville WVNTP Sludge Management Plan NCO021491 Sludge residuals are stored on -site in the 180,000 gallon aerobic digester. The Town of Mocksville currently contracts with the EMA Resources, Inc. to land apply the WWTP residuals on an as needed basis through DWQ permit WQ0003351. Envirolink, Inc. 3r"t Op ttn't (a 4/tdu# dyamvement PO Box 670, Bailey, North Carolina 27807 252-235-4900 (phone) 2520235-2132 (fax)