The URL can be used to link to this page

Home My WebLink AboutNC0030210_Permit Issuance_20131213NPDES DOCUWENT SCANNING COVER SHEET NPDES Permit: NC0030210 Charlotte / Mallard Creek WWTP Docu ent Type: Permit Issuance Wasteload Allocation Authorization to Construct (AtC) Permit Modification Complete File - Historical Engineering Alternatives (EAA) Meeting Notes Instream Assessment (67b) Speculative Limits Environmental Assessment (EA) Document Date: December 13, 2013 This document is printed on rouse paper - ignore army content ozi the resrerse side NCDEN R North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Programs Pat McCrory Thomas A. Reeder John E. Skvarla, III Governor Director Secretary Ms. Jacqueline A. Jarrell, Superintendent Environmental iManagement Division Charlotte -Mecklenburg Utility Department 4222 Westmont Dr. Charlotte, North Carolina 28217 December 13, 2013 Subject: NPDES Final Permit NCO030210 Mallard Creek WRF Mecklenburg County Class IV Facility Dear Ms. Jarrell: i 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 Northl Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). The Division received your comments on the draft permit and provides the following responses: • The correct zip code for the applicant address and the name of the facility will be updated. • The paragraph below the facility name and address in the permit cover page was corrected to read: "to receiving waters designated as Mallard 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 requirement to monitoring for zinc in conjunction with chronic toxicity was maintained in the permit: Zinc is defined as an action level toxic substance in the North Carolina Water Quality Standards Rules. Instead of numeric limits for action levels parameters permits include monito ' g in conjunction with effluent toxicity. Limits are implemented if the action level param ter is determined to be the cause of toxicity in the effluent. Furthermore, the Enviro ental Protection Agency (EPA) has approved this approach for the action level parameters in NPDES permits. • Monitoring for pH, temperature and conductivity will remain as daily. The Division's current policy for monitoring frequency reduction applies only to BOD, TSS, ammonia and fecal coliform. Other parameters should be monitored as specified in 15A NCAC 2B .0508. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St Raleigh, North Carolina 27604 Phone: 919-807-63001 FAX: 919-807-6492 Intemet: www.ncwaterauality.ora �ne Carolina �attrrallk An Equal Opportunity 1 Affirmative Acton Employer Charlotte -Mecklenburg Utility Dept. December 13, 2013 Page 2 of 2 The final permit contains the following changes from your previous permit: • References to Charlotte -Mecklenburg Utilities were replaced with Charlotte -Mecklenburg Utility Department to reflect the current name of the Department . • Following the Mercury Permitting Guidance for the implementation of the Statewide Mercury TMDL mercury data was reviewed to determine the need for a limit or a Mercury Minimization Plan (MMP). A mercury limit will not be required for your facility but you have to develop a Mercury Minimization Plan. See Condition A.(5.) for the MMP requirements. • The monitoring frequency for zinc was modified to quarterly. • Monitoring frequencies for CBOD, TSS, ammonia and fecal coliform were modified to 2/week. • A special condition was added to your permit [See Special Condition A. (6.)] including requirements for electronic reporting. 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. For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://portal.ncdenr.or web/wq/admin[bo ipu/edmr. For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following web site: http://www2.epa.govlcompliance/proposed-npdes-electronic-reporting-rule. 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 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. cc: NPDES Files Central Files EPA Region 4(e-copy) Mooresville Regional Office / Water Quality Aquatic Toxicology Unit (e-copy) Mecklenburg County (erin.hall@mecklenburgcountync.gov) t� Permit NCO030210 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES . DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance v ith the provisions of North Carolina General Statute 143-215.1, other lawful standards and Tegulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, City of Charlotte Charlotte Mecklenburg Utility Department is hereby authorized to discharge wastewater and stormwater from a facility located at Mallard Creek Water Reclamation Facility 12400 US Highway 29 North Mecklenburg County to receiving waters designated as Mallard Creek in the Yadkin -Pee Dee River Basin in accordance with effluent limitations, monitoring requirements and other conditions set forth - in -Parts 4-II,114 and -IV hereof. - - - - The permit shall become effective January 1, 2014. This permit and the authorization to discharge shall expire at midnight on November 30, 2018. Signed this day December 13, 2013. r 14 omas A. Reeder, Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 9 Permit NCO030210 `- SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as of this 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. Charlotte Mecklenburg Utility Department Mallard Creek Water Reclamation Facility is hereby authorized to: 1. Continue to operate an existing 12.0 MGD wastewater treatment facility located at 12400 US Highway 29, Charlotte, Mecklenburg County, consisting of: • influent pump station • mechanical bar screens • two vortex grit removal basins • two flow equalization day tanks • intermediate pumping station • five primary clarifiers • three biological treatment trains • anoxic zones and aeration with internal recycle • three final clarifiers • two traveling bridge tertiary filters • UV disinfection and re -aeration • reuse distribution • anaerobic digesters , - a sludge holding tank - • a waste thickening centrifuge • sludge drying beds and • three standby power generators 2. Operate facilities for reclaimed water use of up to 4.0 MGD in accordance with Non -Discharge Permit number WQ0013252. 3. Reuse non -potable treated effluent for irrigation and dust control on the property of the Mallard Creek Water Reclamation Facility in accordance with condition A. (4.) of the permit. 4. Discharge treated wastewater from the facility described in item one above at the location specified on the attached map through outfall 001 into Mallard Creek, a class C water in the Yadkin -Pee Dee River Basin. Page 2 of 9 Permit NCO030210 Part I A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - 12.0 MGD During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is; authorized to discharge up to-12 MGD of municipal wastewater from outfall 001. Such discharges shall be limited and monitored6 by the Permittee as specified below: ,f Parameter "` . Effluenf Limitations: _ : ; _. .;Montorm _Re uirements_.:.. M nth ya Avera a }1Neekly+ Avera'e � Dailyifl ,� Maximum Measurement ; �Fre uene qr y= ` t -- �S _. pI "'T "" am Sample` .. .,..� -; Location; Flow 12 MGD Continuous Recording Influent or Effluent CBOD, 5 day (200C)2 [April 1- October 31] 4.2 mg/I 6.3 mg/I 2/Week Composite Influent & Effluent CBOD, 5 day (20°C)21 [November 1- March 31] 8.3 mg/l 12.5 mgll 2Meek Composite Influent & Effluent Total Suspended Solid 30.0 mg/I 45.0 mgll 2Meek Composite Influent & Effluent NH3 as N Aril 1- October 311 1.0 m /I 3.0 m /I 2/Week Composite Effluent NH3 as N Nov.1- March 31 2.0 m /l 6.0 m 11 2/Week Composite Effluent Dissolved Oxygen Daily Average > 6.0 m /L Daily Grab Effluent Dissolved Oxygen' 3Meek Grab Upstream & Downstream Fecal Coliform eometrie mean 200/100 ml 400/100 ml 2/Week Grab Effluent Total Nitrogen s Monitor & Report Monthly Composite Effluent Total Phosphorus Monitor & Report Monthly Composite Effluent Temperature °C Monitor & Report Daily Grab Effluent Temperature (°C) Week Grab Upstream & Downstream Total Zinc 4 Monitor & Report Quarterly Composite Effluent _pH _ __ _ _ _ _ _ ._ _ __ Between 6.0_and_9.O.Standard Units _ - Dail _..... _Grab.. _ _. _Effluent_ Chronic Toxicit 5 See Note-5. Quarterly Composite Effluent Effluent Pollutant Scan I F Monitor & Report See Condition A. 3. Notes: 1. Sample locations: Upstream at Pavillion Boulevard and downstream at NCSR 1300 and at NCSR 1304 (Rocky River). Stream samples shall be grab samples and shall be collected 3/Week during the months of June, July, August, and September and 1 / Week during the remaining months of the year. Should the permittee elect to participate in the Yadkin -Pee Dee River Basin Association, instream sampling shall be provisionally waived. 2. The monthly average effluent CBODS and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85% removal) . 3. For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively. 4. Monitoring for total zinc shall be performed in conjunction with the chronic toxicity test. 5. Chronic Toxic ity (Ceriodaphnia dubia) P/F at 90%: February, May, August, November; See Special Condition A. (2.) of this permit. 6. No later than1 90 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 (6). Page 3 of 9 z Permit NCO030210 THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR VISIBLE FOAM IN OTHER THAN TRACE AMOUNTS. A. (2.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY) The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 90%. The permit holder shall perform at a minimum, quarterly monitoring 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 February, May, August and November. 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 TGP3B 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 Environmental Sciences Section 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete, 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 Section at the address cited above. Page 4 of 9 r � Permit NC0030210 Should the 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. If the Permittee monitors any pollutant more frequently than required by this permit, the results of such monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Form submitted. NOTE: Failure Ito 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. Page 5 of 9 L Permit NCO030210 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) Trans-1,2-dichloroethylene Bis (2-chloroethyl) ether Chlorine (total residual, TRC) 1, 1 -dichloroethylene Bis (2-chloroisopropyl) ether Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate Oil and grease Methyl bromide 2-chloronaphthalene Phosphorus Methyl chloride 4-chlorophenyl phenyl ether Total dissolved solids Methylene chloride Chrysene Hardness 1,1,2,2-tetrachloroethane Di-n-butyl phthalate Antimony Tetrachloroethylene Di-n-octyl phthalate Arsenic Toluene Dibenzo(a,h)anthracene Beryllium 1, 1, 1 -trichloroethane 1,2-dichlorobenzene Cadmium 1,1,2-trichloroethane 1,3-dichlorobenzene Chromium Trichloroethylene 1,4-dichlorobenzene Copper Vinyl chloride 3,3-dichlorobenzidine Lead Acid -extractable compounds: Diethyl phthalate Mercury (EPA Method 1631 E) P-chloro-m-cresol Dimethyl phthalate Nickel 2-chlorophenol 2,4-dinitrotoluene Selenium 2,4-dichlorophenol 2,6-dinitrotoluene Silver 2,4-dimethylphenol 1,2-diphenylhydrazine Thallium 4,6-dinitro-o-cresol Fluoranthene Zinc - 2,4=dinitrophenol- Fluorene Cyanide 2-nitrophenol Hexachlorobenzene Total phenolic compounds 4-nitrophenol Hexachlorobutadiene Volatile organic compounds: Pentachlorophenol Hexachlorocyclo-pentadiene Acrolein Phenol Hexachloroethane Acrylonitril.e 2,4,6-trichlorophenol Indeno(1,2,3-cd)pyrene Benzene Base -neutral compounds: Isophorone Bromoform Acenaphthene Naphthalene Carbon tetrachloride Acenaphthylene Nitrobenzene Chlorobenzene Anthracene N-nitrosodi-n-propylamine Chlorodibromomethane Benzidine N-nitrosodimethylamine Chloroethane Benzo(a)anthracene N-nitrosodiphenylamine 2-chloroethylvinyl ether Benzo(a)pyrene Phenanthrene Chloroform 3,4 benzofluoranthene Pyrene Dichlorobromomethane Benzo(ghi)perylene 1,2,4-trichlorobenzene 1, 1 -dichloroethane Benzo(k)fluoranthene 1,2-dichloroethane Bis (2-chloroethoxy) methane 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 / DVVR / Central Files, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. Page 6 of 9 t Permit NCO030210 A. (4.) REUS 7 OF TREATMENT PLANT EFFLUENT The tertiary treated effluent from the Mallard Creek WRF is authorized by the Division for reuse around the existing wastewater treatment facility provided the following conditions are met: • The irrigation water will supplement rainfall during dry periods of the year only; • The effluent applied will be quantified by a meter; • The maximum application rate shall not exceed 0.25-inch/hour or 1.0-inch/day; • No runoff shall occur from the irrigated areas; • Appropriate notice shall be supplied at the entrance of the facility indicating that the area is being irrigated with reclaimed water that should not be used for drinking; and • All irrigation shall occur within the fenced perimeter of the wastewater treatment plant wi controlled public access. A. (5.) MERCURY MINIMIZATION PLAN The ermittee vl ill develop and implement a mercury minimization plan during the term of P i P P rY P g this permit. The MMP shall be developed 180 days from the effective day of the permit, and shall be available for inspection on -site. A sample MMP was developed through a stakeholder review process and has been placed on the Division website for guidance (http://porial.ncdenr.org/web/-Am/swp/ps/npdes, under Mercury Minimization Plan). The MMP should place emphasis on identification of mercury contributors and goals for reduction. Results shall. be summarized and submitted with the next permit renewal. A. (6.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and specify that, if a state does not establish a system to receive such submittals, then permittees- must submit DMRs electronically to the Environmental -Protection Agency (EPA) . The Division anticipates that these regulations will be adopted and is beginning implementation in 'late 2013. NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard Conditions for NPDES Pennnits): i • Section B. Signatory Requirements (11.) • Section D. (2.) Reporting • Section D. (6.) Records Retention • Section E. (5.) Monitoring Reports 1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)l Beginning no later than 90 days from the effective date of this permit, the permittee shall begin reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge M onitoring Report (eDMR) internet application. Monitoring r',esults 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. Page 7 of 9 Permit NCO030210 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: / I-portal.ncdenr.org/web/wq /admin / bog/ ipu / edmr Regardless of the submission method, the first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. 2. Signatory Requirements (Supplements Section B. (11.) (b) and supersedes Section B. 11. d All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B. (11.) (a) or by a duly authorized representative of that person as described in Part II, Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit the following web page: http://portal.ncdenr.org/web/wg/admin/boglipu/edmr Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.221. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: "I certcN, 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 Page 8 of 9 r 9 Permit NCO030210 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 cant penalties for submitting false information, including the possibility of f nes and imprisonment for knowing violations. " 3. Records Retention [Supplements Section D. j6.1j 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]. Page 9of9 `i'D? Si�sj'� �`�.1fi ��.� f � � i� �jf^•`7- -�lt �� .� iit ^^in�.9 .. �f' i t {„ �1 � •. -�I � n� i � ��i. It �/ :. +� . •� I'..s /iI t a^ Outfall to Mallard Creek !, / f/ S I f X�� i4U i� • �— l t ! t I tit 10 >r , \ --�6 II �— � raft' 4 �•� i1 I I,: ` a �\�� J�j � � Sa�f l � 1j1 I y�` L ' ,. •1 _ n M��fli�lil��i x.lG _i �•� �(*.. �-,, C,11�'� ! 1 L.`_,1 1`� �1`h 1 �I 11 � ✓ S CMU - Mallard Creek WRF - NCO030210 Facility Location: Mecklenburg USGS Quad Name: Harrisburg Lat.: 35'19'52" County Receiving Stream: Mallard Creek Long.: 80°41'54" Stream Class: C Subbasin: Yadkin - 030711 North F Not to SCALE NPDES Permit Standard Conditions Page 1 of 18 PART II STANDARD CONDITIONS FOR NPDES PERMITS Section A. Definitions 2/Month Samples are collected twice per month with at least ten calendar days between sampling events. These samples shall be representative of the wastewater discharged during the sample period. 3/Week Samples are collected three times per week on three separate calendar days. These samples shall be representative of the wastewater discharged during the sample period. Act or "the Act" The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC 1251, et. seq. Annual Average The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar year. In the case of fecal coliform, the geometric mean of such discharges. Arithmetic Mean The summation of the individual values divided by the number of individual values. Bypass The known diversion of waste streams from any portion of a treatment facility including the collection system, which is not a designed or established or operating mode for the facility. Calendar Day The period from midnight of one day until midnight of the next day. However, for purposes of this permit, any consecutive 24-hour period that reasonably represents the calendar day may be used for sampling. Calendar Week The period from Sunday through the following Saturday. Calendar Quarter One of the following distinct periods: January through March, April through June, July through September, and October through December. Composite Sample A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 mL in such a manner as to result in a total sample representative of the wastewater discharge during the sample period. The Director may designate the most appropriate method (specific number and size of aliquots necessary, the time interval between grab samples, etc.) on a case -by -case basis. Samples may be collected manually or automatically. Composite samples may be obtained by the following methods: (1) Continuous: a single, continuous sample collected over a 24-hour period proportional to the rate of flow. (2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour period of discharge and combined proportional to the rate of flow measured at the time of individual sample collection, or (3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period with the time intervals between samples determined by a preset number of gallons passing the sampling point. Flow measurement between sample intervals shall be determined by use of a flow recorder and totalizer, and the preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at the treatment system, or Version 1110912011 NPDES Permit Standard Conditions Page 2 of 18 (4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at a constant time interval. Use of this method requires prior approval by the Director. This method may only be used in situations where effluent flow rates vary less than 15 percent. The following restrictions also apply: ➢ Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters ➢ Influent samples shall not be collected more than once per hour. ➢ Permittees with wastewater treatment systems whose detention time < 24 hours shall collect effluent grab samples at intervals of no greater than 20 minutes apart during any 24-hour period. ➢ Permittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect effluent grab samples at least every six hours; there must be a minimum of four samples during a 24-hour sampling period. Continuous flow measurement Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance activities on the flow device. Daily Discharge The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the calendar day for purposes of sampling. For pollutants measured in units of mass, the "daily discharge" is calculated as the total mass of the pollutant discharged over the day. For pollutants expressed in other units of measurement, the "daily discharge" is calculated as the average measurement of the pollutant over the day. (40 CFR 122.2; see also "Composite Sample," above.) Daily Maximum The highest "daily discharge" during the calendar month. Daily SaMpling Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the permit. Sampling shall be conducted on weekdays except where holidays or other disruptions of normal operations prevent weekday sampling. If sampling is required for all seven days of the week for any permit parameter(s), that requirement will be so noted on the Effluent Limitations and Monitoring Page(s). DWQ or "the Division" The Division of Water Quality, Department of Environment and Natural Resources. Effluent Wastewater discharged following all treatment processes from a water pollution control facility or other point source whether treated or untreated. EMC The North Carolina Environmental Management Commission EPA The United States Environmental Protection Agency Facility Closure Cessation of all activities that require coverage under this NPDES permit. Completion of facility closure will allow this permit to be rescinded. Geometric Mean The Nth root of the product of the individual values where N = the number of individual values. For purposes of calculating the geometric mean, values of "0" (or "< [detection level]") shall be considered = 1. Grab Sample Individual samples of at least 100 mL collected over a period of time not exceeding 15 minutes. Grab samples can be collected manually. Grab samples must be representative of the discharge (or the receiving stream, for instream samples). Version 1110912011 NPDES Permit Standard Conditions Page 3 of 18 Hazardous Substance Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the CWA. Instantaneous flow measurement The flow measured during the minimum time required for the flow measuring device or method to produce a result in that instance. To the extent practical, instantaneous flow measurements coincide with the collection of any grab samples required for the same sampling period so that together the samples and flow are representative of the discharge during that sampling period. Monthly Average (concentration limit) The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar month. In the case of fecal coliform or other bacterial parameters or indicators, the geometric mean of such discharges. Permit Issuing Authority The Director of the Division of Water Quality. Quarterly Average (concentration limit) The arithmetic mean of all samples taken over a calendar quarter. Severe prope . damage Substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. Severe property damage excludes economic loss caused by delays in production. Toxic Pollutant: Any pollutant listed as toxic under Section 307(a)(1) of the CWA. Upset An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with permit effluent limitations and/or monitoring requirements. An upset does not include noncompliance caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. Weekly Average (concentration limit) The arithmetic mean of all "daily discharges" of a pollutant measured during the calendar week. In the case of fecal coliform or other bacterial parameters or indicators, the geometric mean of such discharges. Section B. General Conditions 1. Duty to Comply_ The Permittee must comply with all conditions of this permit. Any permit noncompliance constitutes a violation of the CWA and is grounds for enforcement action; for permit termination, revocation and reissuance, or modification; or denial of a permit renewal application [40 CFR 122.41]. a. The Permittee shall comply with effluent standards or prohibitions established under section 307(a) of the CWA for toxic pollutants and with standards for sewage sludge use or disposal established under section 405(d) of the CWA within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if the permit has not yet been modified to incorporate the requirement. b. The CWA provides that any person who violates section[s] 301, 302, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any such sections in a permit issued under section 402, or any requirement imposed in a pretreatment program approved under sections 402(a)(3) or 402(b)(8) of the Act, is subject to a civil penalty not to exceed $37,500 per day for each violation. [33 USC 1319(d) and 40 CFR 122.41(a)(2)] c. The CWA provides that any person who negligently violates sections 301, 302, 306, 307, 308, 318, or 405 of the Act, or any condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, or any requirement imposed in a pretreatment program approved under section 402(a)(3) or 402(b)(8) of the Act, is subject to criminal penalties of $2,500 to $25,000 per day of violation, or Version 1110912011 NPDES Permit Standard Conditions Page 4 of 18 imprisonment of not more than 1 year, or both. In the case of a second or subsequent conviction for a negligent violation, a person shall be subject to criminal penalties of not more than $50,000 per day of violation, or by imprisonment of not more than 2 years, or both. [33 USC 1319(c)(1) and 40 CFR 122.41(a)(2)] d. Any person who knowingly violates such sections, or such conditions or limitations is subject to criminal penalties of $5,000 to $50,000 per day of violation, or imprisonment for not more than 3 years, or both. In the case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal penalties of not more than $100,000 per day of violation, or imprisonment of not more than 6 years, or both. [33 USC 1319(c)(2) and 40 CFR 122.41(a)(2)] e. Any person who knowingly violates section 301, 302, 303, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of the Act, and who knows at that time that he thereby places another person in imminent danger of death or serious bodily injury, shall, upon conviction, be subject to a fine of not more than $250,000 or imprisonment of not more than 15 years, or both. In the case of a second or subsequent conviction for a knowing endangerment violation, a person shall be subject to a fine of not more than $500,000 or by imprisonment of not more than 30 years, or both. An organization, as defined in section 309(c)(3)(B)(iii) of the CWA, shall, upon conviction of violating the imminent danger provision, be subject to a fine of not more than $1,000,000 and can be fined up to $2,000,000 for second or subsequent convictions. [40 CFR 122.41(a)(2)] f. Under state law, a civil penalty of not more than $25,000 per violation may be assessed against any person who violates or fails to act in accordance with the terms, conditions, or requirements of a permit. [North Carolina General Statutes § 143-215.6A] g. Any person may be assessed an administrative penalty by the Administrator for violating section 301, 302, 306, 307, 308, 318 or 405 of this Act, or any permit condition or limitation implementing any of such sections in a permit issued under section 402 of this Act. Administrative penalties for Class I violations are not to exceed $16,000 per violation, with the maximum amount of any Class I penalty assessed not to exceed $37,500. Penalties for Class II violations are not to exceed $16,000 per day for each day during which the violation continues, with the maximum amount of any Class II penalty not to exceed $177,500. [33 USC 1319(g)(2) and 40 CFR 122.41(a)(3)] 2. Duty to Mitigate The Permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in violation of this permit with a reasonable likelihood of adversely affecting human health or the environment [40 CFR 122.41(d)]. 3. Civil and Criminal Liability Except as provided in permit conditions on 'Bypassing" (Part II.C.4), "Upsets" (Part II.C.S) and "Power Failures" (Part II.C.7), nothing in this permit shall be construed to relieve the Permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act, 33 USC 1319. Furthermore, the Permittee is responsible for consequential damages, such as fish kills, even though the responsibility for effective compliance may be temporarily suspended. 4. Oil and Hazardous Substance Liability Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee from any responsibilities, liabilities, or penalties to which the Permittee is or may be subject to under NCGS 143- 215.75 et seq. or Section 311 of the Federal Act, 33 USG 1321. Furthermore, the Permittee is responsible for consequential damages, such as fish kills, even though the responsibility for effective compliance may be temporarily suspended. 5. Property Rights The issuance of this permit does not convey any property rights in either real or personal property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal, State or local laws or regulations [40 CFR 122.41(g)]. 6. Onshore or Offshore Construction This permit does not authorize or approve the construction of any onshore or offshore physical structures or facilities or the undertaking of any work in any navigable waters. Version 1110912011 NPDES Permit Standard Conditions Page 5 of 18 7. Severability The provisions of this permit are severable. If any provision of this permit, or the application of any provision of this permit to any circumstances, is held invalid, the application of such provision to other circumstances, and the remainder of this permit, shall not be affected thereby [NCGS 15013-23]. 8. Duty to Provide Information The Permittee shall furnish to the Permit Issuing Authority, within a reasonable time, any information which the Permit Issuing Authority may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this permit or to determine compliance with this permit. The Permittee shall also furnish to the Permit Issuing Authority upon request, copies of records required by this permit [40 CFR 122.41(h)]. 9. Duty to Reapply If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit, the Permittee must apply for and obtain a new permit [40 CFR 122.41(b)]. 10. Expiration of Permit The Permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to discharge beyond the expiration date, the Permittee shall submit such information, forms, and fees as are required by the agency authorized to issue permits no later than 180 days prior to the expiration date unless permission for a later date has been granted by the Director. (The Director shall not grant permission for applications to be submitted later than the expiration date of the existing permit.) [40 CFR 122.21(d)] Any Permittee that has not requested renewal at least 180 days prior to expiration, or any Permittee that does not have a permit after the expiration and has not requested renewal at least 180 days prior to expiration, will subject the Permittee to enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq. 11. Signatory Requirements All applications, reports, or information submitted to the Permit Issuing Authority shall be signed and certified [40 CFR 122.41(k)]. a. All permit applications shall be signed as follows: (1) For a corporation: by a responsible corporate officer. For the purpose of this Section, a responsible corporate officer means: (a) a president, secretary, treasurer or vice president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision making functions for the corporation, or (b) the manager of one or more manufacturing, production, or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures . (2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or (3) For a municipality, State, Federal, or other public agency: by either a principal executive officer or ranking elected official [40 CFR 122.22]. b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be signed by a person described in paragraph a. above or by a duly authorized representative of that person. A person is a duly authorized representative only if: (1) The authorization is made in writing by a person described above; (2) The authorization specified either an individual or a position having responsibility for the overall operation of the regulated facility or activity, such as the position of plant manager, operator of a well or well field, superintendent, a position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position.); and (3) The written authorization is submitted to the Permit Issuing Authority [40 CFR 122.22] Version 1110912011 NPDES Permit Standard Conditions Page 6 of 18 c. Changes to authorization: If an authorization under paragraph (b) of this section is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization satisfying the requirements of paragraph (b) of this section must be submitted to the Director prior to or together with any reports, information, or applications to be signed by an authorized representative [40 CFR 122.22] d. Certification. Any person signing a document under paragraphs a. or b. of this section shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: 7 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 orpersons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations. " 12. Permit Actions This permit may be modified, revoked and reissued, or terminated for cause. The filing of a request by the Permittee for a permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any permit condition [40 CFR 122.41(f)]. 13. Permit Modification, Revocation and Reissuance, or Termination The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations contained in Title 40, Code of Federal Regulations, Parts 122 and 123; Title 15A of the North Carolina Administrative Code, Subchapter 02H .0100; and North Carolina General Statute 143.215.1 et. al. 14. Annual Administering and Compliance Monitoring Fee Requirements The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being billed by the Division. Failure to pay the fee in a timely manner in accordance with 15A NCAC 02H .0105(b)(2) may cause this Division to initiate action to revoke the permit. Section C. Operation and Maintenance of Pollution Controls 1. Certified Operator Owners of classified water pollution control systems must designate operators, certified by the Water Pollution Control System Operators Certification Commission (WPCSOCC), of the appropriate type and grade for the system, and, for each classification must [T15A NCAC 08G .0201]: a. designate one Operator In Responsible Charge (ORC) who possesses a valid certificate of the type and grade at least equivalent to the type and grade of the system; b. designate one or more Back-up Operator(s) in Responsible Charge (Back-up ORCs) who possesses a valid certificate of the type of the system and no more than one grade less than the grade of the system, with the exception of no backup operator in responsible charge is required for systems whose minimum visitation requirements are twice per year; and c. submit a signed completed "Water Pollution Control System Operator Designation Form" to the Commission (or to the local health department for owners of subsurface systems) countersigned by the designated certified operators, designating the Operator in Responsible Charge (ORC) and the Back-up Operator in Responsible Charge (Back-up ORC): (1) 60 calendar days prior to wastewater or residuals being introduced into a new system; or (2) within 120 calendar days following: ➢ receiving notification of a change in the classification of the system requiring the designation of a new Operator in Responsible Charge (ORC) and Back-up Operator in Responsible Charge (Back-up ORC) of the proper type and grade; or ➢ a vacancy in the position of Operator in Responsible Charge (ORC) or Back-up Operator in Responsible Charge (Back-up ORC). Version 1110912011 NPDES Permit Standard Conditions Page 7 of 18 (3) within seven calendar days of vacancies in both ORC and Back-up ORC positions replacing or designating at least one of the responsibilities. The ORC of each Class I facility (or the Back-up ORC, when acting as surrogate for the ORC) must: ➢ Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment facility must be visited at least weekly ➢ Comply with all other conditions of 15A NCAC 08G .0204. The ORC of each Class II, III and IV facility (or the Back-up ORC, when acting as surrogate for the ORC) must: ➢ Visit the facility as often as is necessary to insure proper operation of the treatment system; the treatment facility must be visited at least five days per week, excluding holidays ➢ Properly manage and document daily operation and maintenance of the facility ➢ Comply with all other conditions of 15A NCAC 08G .0204. 2. Proper Operation and Maintenance The Permittee shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the Permittee to achieve compliance with the conditions of this permit. Proper operation and maintenance also includes adequate laboratory controls and appropriate quality assurance procedures. This provision requires the Permittee to install and operate backup or auxiliary facilities only when necessary to achieve compliance with the conditions of the permit [40 CFR 122.41(e)]. NOTE: Properly and officially designated operators are fully responsible for all proper operation and maintenance of the facility, and all documentation required thereof, whether acting as a contract operator [subcontractor] or a member of the Permittee's staff. 3. Need to Halt or Reduce not a Defense It shall not be a defense for a Permittee in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the condition of this permit [40 CFR 122.41(c)]. 4. Bypassing of Treatment Facilities a. Bypass not exceeding limitations [40 CFR 122.41(m)(2)] The Permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the provisions of Paragraphs b. and c. of this section. b. Notice [40 CFR 122.41(m)(3)] (1) Anticipated bypass. If the Permittee knows in advance of the need for a bypass, it shall submit prior notice, if possible at least ten days before the date of the bypass; including an evaluation of the anticipated quality and effect of the bypass. (2) Unanticipated bypass. The Permittee shall submit notice of an unanticipated bypass as required in Part II.E.6. (24-hour notice). c. Prohibition of Bypass (1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority may take enforcement action against a Permittee for bypass, unless: (A) Bypass was unavoidable to prevent loss of life, personal injury or severe property damage; (B) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate backup equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and (C) The Permittee submitted notices as required under Paragraph b. of this section. (2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement action against a Permittee for a bypass as provided in any current or future system -wide collection system permit associated with the treatment facility. Version 1110912011 NPDES Permit Standard Conditions Page 8 of 18 (3) The Permit Issuing Authority may approve an anticipated bypass, after considering its adverse effects, if the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c. (1) of this section. 5. Upsets a. Effect of an upset [40 CFR 122.41(n)(2)]: An upset constitutes an affirmative defense to an action brought for noncompliance with such technology based permit effluent limitations if the requirements of paragraph b. of this condition are met. No determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is final administrative action subject to judicial review. b. Conditions necessary for a demonstration of upset: Any Permittee who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that: (1) An upset occurred and that the Permittee can identify the cause(s) of the upset; (2) The Permittee facility was at the time being properly operated; and (3) The Permittee submitted notice of the upset as required in Part ILE.6.(b) of this permit. (4) The Permittee complied with any remedial measures required under Part II.B.2. of this permit. c. Burden of proof [40 CFR 122.41(n)(4)]: The Permittee seeking to establish the occurrence of an upset has the burden of proof in any enforcement proceeding. 6. Removed Substances Solids, sludges, filter backwash, or other pollutants removed in the course of treatment or control of wastewaters shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant from such materials from entering waters of the State or navigable waters of the United States except as permitted by the Commission. The Permittee shall comply with all applicable state and Federal regulations governing the disposal of sewage sludge, including 40 CFR 503, Standards for the Use and Disposal of Sewage Sludge; 40 CFR Part 258, Criteria For Municipal Solid Waste Landfills; and 15A NCAC Subchapter 2T, Waste Not Discharged To Surface Waters. The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use or disposal practices. 7. Power Failures The Permittee is responsible for maintaining adequate safeguards (as required by 15A NCAC 02H .0124) to prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means of alternate power sources, standby generators or retention of inadequately treated effluent. Section D. Monitoring and Records 1. Representative Sampling Samples collected and measurements taken, as required herein, shall be representative of the permitted discharge. Samples collected at a frequency less than daily shall be taken on a day and time that is representative of the discharge for the period the sample represents. All samples shall be taken at the monitoring points specified in this permit and, unless otherwise specified, before the effluent joins or is diluted by any other wastestream, body of water, or substance. Monitoring points shall not be changed without notification to and the approval of the Permit Issuing Authority [40 CFR 122.410)]. 2. Reporting Monitoring results obtained during the previous month(s) shall be summarized for each month and reported on a monthly Discharge Monitoring Report (DMR) Form (MR 1, 1. 1, 2, 3) or alternative forms approved by the Director, postmarked no later than the last calendar day of the month following the completed reporting period. The first DMR is due on the last day of the month following the issuance of the permit or in the case of a new facility, on the last day of the month following the commencement of discharge. Duplicate signed copies of these, and all other reports required herein, shall be submitted to the following address: Version 1110912011 NPDES Permit Standard Conditions Page 9 of 18 NC DENR / Division of Water Quality / Surface Water Protection Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Flow Measurements Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges. The devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a maximum deviation of less than 10% from the true discharge rates throughout the range of expected discharge volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. The Director shall approve the flow measurement device and monitoring location prior to installation. Once -through condenser cooling water flow monitored by pump logs, or pump hour meters as specified in Part I of this permit and based on the manufacturer's pump curves shall not be subject to this requirement. 4. Test Procedures Laboratories used for sample analysis must be certified by the Division. Permittees should contact the Division's Laboratory Certification Section (919 733-3908 or http://portal.ncdenr.org/web/wq/lab/cert) for information regarding laboratory certifications. Facilities whose personnel are conducting testing of field -certified parameters only must hold the appropriate field parameter laboratory certifications. Test procedures for the analysis of pollutants shall conform to the EMC regulations (published pursuant to NCGS 143-215.63 et. seq.), the Water and Air Quality Reporting Acts, and to regulations published pursuant to Section 304(g), 33 USC 1314, of the CWA (as amended), and 40 CFR 136; or in the case of sludge use or disposal, approved under 40 CFR 136, unless otherwise specified in 40 CFR 503, unless other test procedures have been specified in this permit [40 CFR 122.41]. To meet the intent of the monitoring required by this permit, all test procedures must produce minimum detection and reporting levels that are below the permit discharge requirements and all data generated must be reported down to the minimum detection or lower reporting level of the procedure. If no approved methods are determined capable of achieving minimum detection and reporting levels below permit discharge requirements, then the most sensitive (method with the lowest possible detection and reporting level) approved method must be used. 5. Penalties for Tampering The CWA provides that any person who falsifies, tampers with, or knowingly renders inaccurate, any monitoring device or method required to be maintained under this permit shall, upon conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years per violation, or by both. If a conviction of a person is for a violation committed after a first conviction of such person under this paragraph, punishment is a fine of not more than $20,000 per day of violation, or by imprisonment of not more than 4 years, or both [40 CFR 122.41]. 6. Records Retention Except for records of monitoring information required by this permit related to the Permittee's sewage sludge use and disposal activities, which shall be retained for a period of at least five years (or longer as required by 40 CFR 503), the Permittee shall retain records of all monitoring information, including: ➢ all calibration and maintenance records ➢ all original strip chart recordings for continuous monitoring instrumentation ➢ copies of all reports required by this permit ➢ copies of all data used to complete the application for this permit These records or copies shall be maintained for a period of at least 3 years from the date of the sample, measurement, report or application. This period may be extended by request of the Director at any time [40 CFR 122.41]. Version 1110912011 NPDES Permit Standard Conditions Page 10 of 18 7. Recording Results For each measurement or sample taken pursuant to the requirements of this permit, the Permittee shall record the following information [40 CFR 122.41]: a. The date, exact place, and time of sampling or measurements; b. The individual(s) who performed the sampling or measurements; c. The date(s) analyses were performed; d. The individual(s) who performed the analyses; e. The analytical techniques or methods used; and f. The results of such analyses. 8. Inspection and Entry The Permittee shall allow the Director, or an authorized representative (including an authorized contractor acting as a representative of the Director), upon the presentation of credentials and other documents as may be required by law, to; a. Enter, at reasonable times, upon the Permittee's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this permit; b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this permit; c. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this permit; and d. Sample or monitor at reasonable times, for the purposes of assuring permit compliance or as otherwise authorized by the CWA, any substances or parameters at any location [40 CFR 122.41(i)]. Section E Reporting Requirements 1. Change in Discharge All discharges authorized herein shall be consistent with the terms and conditions of this permit. The discharge of any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute a violation of the permit. 2. Planned Changes The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions to the permitted facility [40 CFR 122.41(1)]. Notice is required only when: a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR 122.29(b); or b. The alteration or addition could significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants subject neither to effluent limitations in the permit, nor to notification requirements under 40 CFR 122.42(a)(1); or c. The alteration or addition results in a significant change in the Permittee's sludge use or disposal practices, and such alteration, addition or change may justify the application of permit conditions that are different from or absent in the existing permit, including notification of additional use or disposal sites not reported during the permit application process or not reported pursuant to an approved land application plan. 3. Anticipated Noncompliance The Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other activities that might result in noncompliance with the permit [40 CFR 122.41(1)(2)]. 4. Transfers This permit is not transferable to any person without prior written notice to and approval from the Director in accordance with 40 CFR 122.61. The Director may condition approval in accordance with NCGS 143-215.1, in particular NCGS 143-215.1(b)(4)b.2., and may require modification or revocation and reissuance of the permit, or a minor modification, to identify the new permittee and incorporate such other requirements as may be necessary under the CWA [40 CFR 122.41(1)(3), 122.61] or state statute. Version 1110912011 NPDES Permit Standard Conditions Page 11 of 18 5. Monitoring Reports Monitoring results shall be reported at the intervals specified elsewhere in this permit [40 CFR 122.41(1)(4)]. a. Monitoring results must be reported on a Discharge Monitoring Report (DMR) (See Part II.D.2) or forms provided by the Director for reporting results of monitoring of sludge use or disposal practices. b. If the Permittee monitors any pollutant more frequently than required by this permit using test procedures approved under 40 CFR Part 136 and at a sampling location specified in this permit or other appropriate instrument governing the discharge, the results of such monitoring shall be included in the calculation and reporting of the data submitted on the DMR. 6. Twenty-four Hour Reporting a. The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment. Any information shall be provided orally within 24 hours from the time the Permittee became aware of the circumstances. A written submission shall also be provided within 5 days of the time the Permittee becomes aware of the circumstances. The written submission shall contain a description of the noncompliance, and its cause; the period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance [40 CFR 122.41(1)(6)]. b. The Director may waive the written report on a case -by -case basis for reports under this section if the oral report has been received within 24 hours. c. Occurrences outside normal business hours may also be reported to the Division's Emergency Response personnel at (800) 662-7956, (800) 858-0368 or (919) 733-3300. 7. Other Noncompliance The Permittee shall report all instances of noncompliance not reported under Part II.E.5 and 6. of this permit at the time monitoring reports are submitted. The reports shall contain the information listed in Part II.E.6. of this permit [40 CFR 122.41(1)(7)]. 8. Other Information Where the Permittee becomes aware that it failed to submit any relevant facts in a permit application, or submitted incorrect information in a permit application or in any report to the Director, it shall promptly submit such facts or information [40 CFR 122.41(1)(8)]. 9. Noncompliance Notification The Permittee shall report by telephone to either the central office or the appropriate regional office of the Division as soon as possible, but in no case more than 24 hours or on the next working day following the occurrence or first knowledge of the occurrence of any of the following: a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge digester; the known passage of a slug of hazardous substance through the facility; or any other unusual circumstances. b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc. c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass without treatment of all or any portion of the influent to such station or facility. Persons reporting such occurrences by telephone shall also file a written report within 5 days following first knowledge of the occurrence. Also see reporting requirements for municipalities in Part IV.C.2.c. of this permit. 10. Availability of Reports Except for data determined to be confidential under NCGS 143-215.3 (a)(2) or Section 308 of the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for public inspection at the offices of the Division. As required by the Act, effluent data shall not be considered confidential. Knowingly making any false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143- 215. 1 (b)(2) or in Section 309 of the Federal Act. Version 1110912011 NPDES Permit Standard Conditions Page 12 of 18 11. Penalties for Falsification of Reports The CWA provides that any person who knowingly makes any false statement, representation, or certification in any record or other document submitted or required to be maintained under this permit, including monitoring reports or reports of compliance or noncompliance shall, upon conviction, be punished by a fine of not more than $25,000 per violation, or by imprisonment for not more than two years per violation, or by both [40 CFR 122.41]. 12. Annual Performance Reports Permittees who own or operate facilities that collect or treat municipal or domestic waste shall provide an annual report to the Permit Issuing Authority and to the users/customers served by the Permittee (NCGS 143-215.1C). The report shall summarize the performance of the collection or treatment system, as well as the extent to which the facility was compliant with applicable Federal or State laws, regulations and rules pertaining to water quality. The report shall be provided no later than sixty days after the end of the calendar or fiscal year, depending upon which annual period is used for evaluation. The report shall be sent to: NC DENR / Division of Water Quality / Surface Water Protection Section ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Version 1110912011 NPDES Permit Standard Conditions Page 13 of 18 PART III OTHER REQUIREMENTS Section A. Construction a. The Permittee shall not commence construction of wastewater treatment facilities, nor add to the plant's treatment capacity, nor change the treatment process(es) utilized at the treatment plant unless (1) the Division has issued an Authorization to Construct (AtC) permit or (2) the Permittee is exempted from such AtC permit requirements under Item b. of this Section. b. In accordance with NCGS 143-215.1(a5) [SL 2011-394], no permit shall be required to enter into a contract for the construction, installation, or alteration of any treatment work or disposal system or to construct, install, or alter any treatment works or disposal system within the State when the system's or work's principle function is to conduct, treat, equalize, neutralize, stabilize, recycle, or dispose of industrial waste or sewage from an industrial facility and the discharge of the industrial waste or sewage is authorized under a permit issued for the discharge of the industrial waste or sewage into the waters of the State. Notwithstanding the above, the permit issued for the discharge may be modified if required by federal regulation. c. Issuance of an AtC will not occur until Final Plans and Specifications for the proposed construction have been submitted by the Permittee and approved by the Division. Section B. Groundwater Monitoring The Permittee shall, upon written notice from the Director, conduct groundwater monitoring as may be required to determine the compliance of this NPDES permitted facility with the current groundwater standards. Section C. Changes in Discharges of Toxic Substances The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe (40 CFR 122.42): a. That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following "notification levels"; (1) One hundred micrograms per liter (100 µg/L); (2) Two hundred micrograms per liter (200 µg/L) for acrolein and acrylonitrile; five hundred micrograms per liter (500 µg/L) for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol; and one milligram per liter (1 mg/L) for antimony; (3) Five times the maximum concentration value reported for that pollutant in the permit application. b. That any activity has occurred or will occur which would result in any discharge, on a non -routine or infrequent basis, of a toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following "notification levels"; (1) Five hundred micrograms per liter (500 µg/L); (2) One milligram per liter (1 mg/L) for antimony; (3) Ten times the maximum concentration value reported for that pollutant in the permit application. Section D. Facility Closure Requirements The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system covered by this permit. The Division may require specific measures during deactivation of the system to prevent adverse impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit continue at the permitted facility. Version 1110912011 NPDES Permit Standard Conditions Page 14 of 18 PART IV SPECIAL CONDITIONS FOR MUNICIPAL FACILITIES Section A. Definitions In addition to the definitions in Part II of this permit, the following definitions apply to municipal facilities: Indirect Discharge or Industrial User Any non -domestic source that discharges wastewater containing pollutants into a POTW regulated under section 307(b), (c) or (d) of the CWA. [40 CFR 403.3 (i) and 0) and 15A NCAC 02H .0903(b)(11)] Interference Inhibition or disruption of the POTW treatment processes; operations; or its sludge process, use, or disposal which causes or contributes to a violation of any requirement of the Permittee's (or any satellite POTW's if different from the Permittee) NPDES, collection system, or non -discharge permit or prevents sewage sludge use or disposal in compliance with specified applicable State and Federal statutes, regulations, or permits. [15A NCAC 02H .0903(b)(14)] Pass Through A discharge which exits the POTW into waters of the State in quantities or concentrations which, alone or with discharges from other sources, causes a violation, including an increase in the magnitude or duration of a violation, of the Permittee's (or any satellite POTW's, if different from the Permittee) NPDES, collection system, or non -discharge permit. [15A NCAC 02H .0903(b)(23)] Publicly Owned Treatment Works (POTW) A treatment works as defined by Section 212 of the CWA, which is owned by a State or local government organization. This definition includes any devices and systems used in the storage, treatment, recycling and reclamation of municipal sewage or industrial wastes of a liquid nature. It also includes the collection system, as defined in 15A NCAC 2T .0402, only if it conveys wastewater to a POTW treatment plant. The term also means the local government organization, or municipality, as defined in section 502(4) of the CWA, which has jurisdiction over indirect discharges to and the discharges from such a treatment works. In this context, the organization may be the owner of the POTW treatment plant or the owner of the collection system into which an indirect discharger discharges. This second type of POTW may be referred to as a "satellite POTW organization." [15A NCAC 02H .0903(b)(26)] "Significant Industrial User" or "SIU" An Industrial User that discharges wastewater into a publicly owned treatment works and that [15A NCAC 02H .0903(b)(33)]: 1. Discharges an average of 25,000 gallons per day or more of process wastewater to the POTW (excluding sanitary, noncontact cooling and boiler blowdown wastewaters); or 2. Contributes process wastewater which makes up five percent or more of the NPDES or non -discharge permitted flow limit or organic capacity of the POTW treatment plant. In this context, organic capacity refers to BOD, TSS and ammonia; or 3. Is subject to categorical standards under 40 CFR Part 403.6 and 40 CFR Parts 405-471; or 4. Is designated as such by the Permittee on the basis that the Industrial User has a reasonable potential for adversely affecting the POTW's operation or for violating any pretreatment standard or requirement, or the POTW's effluent limitations and conditions in its NPDES or non -discharge permit, or to limit the POTW's sludge disposal options; 5. Subject to approval under 15A NCAC 02H .0907(b), the Permittee may determine that an Industrial User meeting the criteria in paragraphs 1 or 2 of this definition above has no reasonable potential for adversely affecting the POTW's operation or for violating any pretreatment standard or requirement, the POTW's effluent limitations and conditions in its NPDES or non -discharge permit, or to limit the POTW's sludge disposal options, and thus is not a Significant Industrial User (SIU); or 6. Subject to approval under 15A NCAC 02H .0907(b), the Permittee may determine that an Industrial User meeting the criteria in paragraph 3 of this definition above meets the requirements of 40 CFR Part 403.3(v)(2) and thus is a non -significant categorical Industrial User. Section B. Publicly Owned Treatment Works (POTWs) Version 1110912011 NPDES Permit Standard Conditions Page 15 of 18 All POTWs must provide adequate notice to the Director of the following [40 CFR 122.42(b)]: 1. Any new introduction of pollutants into the POTW from an indirect discharger, regardless of the means of transport, which would be subject to section 301 or 306 of CWA if it were directly discharging those pollutants; and 2. Any substantial change in the volume or character of pollutants being introduced by an indirect discharger as influent to that POTW at the time of issuance of the permit. 3. For purposes of this paragraph, adequate notice shall include information on (1) the quality and quantity of effluent introduced into the POTW, and (2) any anticipated impact that may result from the change of the quantity or quality of effluent to be discharged from the POTW. Section C. Municipal Control of Pollutants from Industrial Users. 1. Effluent limitations are listed in Part I of this permit. Other pollutants attributable to inputs from Industrial Users discharging to the POTW may be present in the Permittee's discharge. At such time as sufficient information becomes available to establish limitations for such pollutants, this permit may be revised to specify effluent limitations for any or all of such other pollutants in accordance with best practicable technology or water quality standards. 2. Prohibited Discharges a. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibition against the introduction of pollutants or discharges into the waste treatment system or waste collection system which cause or contribute to Pass Through or Interference as defined in 15A NCAC 02H .0900 and 40 CFR 403. [40 CFR 403.5(a)(1)] b. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibitions against the introduction of the following wastes in the waste treatment or waste collection system [40 CFR 403.5(b)]: (1) Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to, wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade using the test methods specified in 40 CFR 261.21; (2) Pollutants which cause corrosive structural damage to the POTW, but in no case discharges with pH lower than 5.0, unless the works is specifically designed to accommodate such discharges; (3) Solid or viscous pollutants in amounts which cause obstruction to the flow in the POTW resulting in Interference; (4) Any pollutant, including oxygen demanding pollutants (BOD, etc.) released in a Discharge at a flow rate and/or pollutant concentration which will cause Interference with the POTW; (5) Heat in amounts which will inhibit biological activity in the POTW resulting in Interference, but in no case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C (104°F) unless the Division, upon request of the POTW, approves alternate temperature limits; (6) Petroleum oil, non -biodegradable cutting oil, or products of mineral oil origin in amounts that will cause Interference or Pass Through; (7) Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems; or (8) Any trucked or hauled pollutants, except at discharge points designated by the POTW. c. The Permittee shall investigate the source of all discharges into the POTW, including slug loads and other unusual discharges, which have the potential to adversely impact the Permittee's Pretreatment Program and/or the operation of the POTW. The Permittee shall report such discharges into the POTW to the Director or the appropriate Regional Office. Any information shall be provided orally within 24 hours from the time the Permittee became aware of the circumstances. A written submission shall also be provided within 5 days of the time the Permittee becomes aware of the circumstances. The written submission shall contain a description of the discharge; the investigation into possible sources; the period of the discharge, including exact dates and times; if the discharge has not ceased, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance, Version 1110912011 NPDES Permit Standard Conditions Page 16 of 18 3. With regard to the effluent requirements listed in Part I of this permit, it may be necessary for the Permittee to supplement the requirements of the Federal Pretreatment Standards (40 CFR, Part 403) to ensure compliance by the Permittee with all applicable effluent limitations. Such actions by the Permittee may be necessary regarding some or all of the industries discharging to the municipal system. 4. The Permittee shall require any Industrial User (IU) discharging to the POTW to meet Federal Pretreatment Standards developed under Section 307(b) of the Act as amended (which includes categorical standards and specific local limits, best management practices and narrative requirements). Prior to accepting wastewater from any Significant Industrial User (SIU), the Permittee shall either develop and submit to the Division a new Pretreatment Program or, as necessary, a modification of an existing Pretreatment Program, for approval as required under section D below as well as 15A NCAC 02H .0907(a) and (b). [40 CFR 122.440)(2)] 5. This permit shall be modified, or alternatively, revoked and reissued, to incorporate or modify an approved POTW Pretreatment Program or to include a compliance schedule for the development of a POTW Pretreatment Program as required under Section 402 (b)(8) of the CWA and implementing regulations or by the requirements of the approved State pretreatment program, as appropriate. Section D. Pretreatment Programs Under authority of sections 307 (b) and (c) and 402(b)(8) of the CWA and implementing regulations 40 CFR 403, North Carolina General Statute 143-215.3(14) and implementing regulations 15A NCAC 02H .0900, and in accordance with the approved pretreatment program, all provisions and regulations contained and referenced in the pretreatment program submittal are an enforceable part of this permit. [40 CFR 122.440)(2)] The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8) of the CWA, 40 CFR 403, 15A NCAC 02H .0900, and the legal authorities, policies, procedures, and financial provisions contained in its pretreatment program submission and Division approved modifications thereof. Such operation shall include but is not limited to the implementation of the following conditions and requirements. Terms not defined in Part II or Part IV of this permit are as defined in 15A NCAC 02H .0903 and 40 CFR 403.3. 1. Sewer Use Ordinance (SUO) The Permittee shall maintain adequate legal authority to implement its approved pretreatment program. [15A NCAC 02H .0903(b)(32), .0905 and .0906(b)(1); 40 CFR 403.8(f)(1) and 403.9(b)(1) and (2)] 2. Industrial Waste Survey (IWS) The Permittee shall implement an IWS consisting of the survey of users of the POTW collection system or treatment plant, as required by 40 CFR 403.8(f)(2)(i-iii) and 15A NCAC 02H .0905 [also 40 CFR 122.440)(1)], including identification of all Industrial Users that may have an impact on the POTW and the character and amount of pollutants contributed to the POTW by these Industrial Users and identification of those Industrial Users meeting the definition of SIU. Where the Permittee accepts wastewater from one or more satellite POTWs, the IWS for the Permittee shall address all satellite POTW services areas, unless the pretreatment program in those satellite service areas is administered by a separate Permittee with an approved Pretreatment Program. The Permittee shall submit a summary of its IWS activities to the Division at least once every five years, and as required by the Division. The IWS submission shall include a summary of any investigations conducted under paragraph C.2.c. of this Part. [15A NCAC 02H .0903(b)(13), .0905 and .0906(b)(2); 40 CFR 403.8(f)(2) and 403.9] 3. Monitoring Plan The Permittee shall implement a Division -approved Monitoring Plan for the collection of facility specific data to be used in a wastewater treatment plant Headworks Analysis (HWA) for the development of specific pretreatment local limits. Effluent data from the Plan shall be reported on the DMRs (as required by Parts ILD and II.E.5.). [15A NCAC 02H .0903(b)(16), .0906(b)(3) and .0905] 4. Headworks Analysis (HWA) and Local Limits The Permittee shall obtain Division approval of a HWA at least once every five years, and as required by the Division. Within 180 days of the effective date of this permit (or any subsequent permit modification) the Permittee shall submit to the Division a written technical evaluation of the need to revise local limits (i.e., an updated HWA or documentation of why one is not needed) [40 CFR 122.44]. The Permittee shall develop, in accordance with 40 CFR 403.5(c) and 15A NCAC 02H .0909, specific Local Limits to implement the prohibitions listed in 40 CFR 403.5(a) and (b) and 15A NCAC 02H .0909. Pursuant to 40 CFR 403.5, local limits are Version 1110912011 NPDES Permit Standard Conditions Page 17 of 18 enforceable Pretreatment Standards as defined by 40 CFR 403.3(1). [15A NCAC 02H .0903(b)(10), .0905, and .0906(b)(4)] 5. Industrial User Pretreatment Permits (IUP) & Allocation Tables In accordance with NCGS 143-215.1, the Permittee shall issue to all Significant Industrial Users, permits for operation of pretreatment equipment and discharge to the Permittee's collection system or treatment works. These permits shall contain limitations, sampling protocols, reporting requirements, appropriate standard and special conditions, and compliance schedules as necessary for the installation of treatment and control technologies to assure that their wastewater discharge will meet all applicable pretreatment standards and requirements. The Permittee shall maintain a current Allocation Table (AT) which summarizes the results of the HWA and the limits from all 1UPs. Permitted IUP loadings for each parameter cannot exceed the treatment capacity of the POTW as determined by the HWA. [15A NCAC 02H .0906(b)(6), .0909, .0916, and .0917; 40 CFR 403.5, 403.8(f)(1)(iii); NCGS 143-215.67(a)] 6. Authorization to Construct (AtQ The Permittee shall ensure that an Authorization to Construct permit (AtQ is issued to all applicable Industrial Users for the construction or modification of any pretreatment facility. Prior to the issuance of an AtC, the proposed pretreatment facility and treatment process must be evaluated for its capacity to comply with all Industrial User Pretreatment Permit (1UP) limitations. [ 15A NCAC 02H .0906(b)(7) and .0905; NCGS 143- 215. 1 (a)(8)] 7. POTW Inspection & Monitoring of their IUs The Permittee shall conduct inspection, surveillance, and monitoring activities as described in its Division approved pretreatment program in order to determine, independent of information supplied by Industrial Users, compliance with applicable pretreatment standards. [15A NCAC 02H .0908(e); 40 CFR 403.8(f)(2)(v)] The Permittee must: a. Inspect all Significant Industrial Users (SIUs) at least once per calendar year; b. Sample all Significant Industrial Users (SlUs) at least once per calendar year for all SIU permit -limited parameters including flow except as allowed under 15A NCAC .0908(e); and c. At least once per year, document an evaluation of any non -significant categorical Industrial User for compliance with the requirements in 40 CFR 403.3(v)(2), and either continue or revoke the designation as non- significant. 8. IU Self Monitoring and Reporting The Permittee shall require all Industrial Users to comply with the applicable monitoring and reporting requirements outlined in the Division -approved pretreatment program, the industry's pretreatment permit, or in 15A NCAC 02H .0908. [15A NCAC 02H .0906(b)(5) and .0905; 40 CFR 403.8(f)(1)(v) and (2)(iii); 40 CFR 122.440)(2) and 40 CFR 403.12] 9. Enforcement Response Plan (ERP) The Permittee shall enforce and obtain appropriate remedies for violations of all pretreatment standards promulgated pursuant to section 307(b) and (c) of the CWA (40 CFR 405 et. seq.), prohibitive discharge standards as set forth in 40 CFR 403.5 and 15A NCAC 02H .0909, specific local limitations, and other pretreatment requirements. All remedies, enforcement actions and other, shall be consistent with the Enforcement Response Plan (ERP) approved by the Division. [15A NCAC 02H .0903(b)(7), .0906(b)(8) and .0905; 40 CFR 403.8(f)(5)] 10. Pretreatment Annual Reports (PAR) The Permittee shall report to the Division in accordance with 15A NCAC 02H .0908. In lieu of submitting annual reports, Modified Pretreatment Programs developed under 15A NCAC 02H .0904 (b) may be required to submit a partial annual report or to meet with Division personnel periodically to discuss enforcement of pretreatment requirements and other pretreatment implementation issues. For all other active pretreatment programs, the Permittee shall submit two copies of a Pretreatment Annual Report (PAR) describing its pretreatment activities over the previous calendar year to the Division at the following address: Version 1110912011 NPDES Permit Standard Conditions Page 18 of 18 NC DENR / Division of Water Quality / Surface Water Protection Section Pretreatment, Emergency Response, and Collection Systems (PERCS) Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 These reports shall be submitted by March 1 of each year and shall contain the following: a. Narrative A narrative summary detailing actions taken, or proposed, by the Permittee to correct significant non- compliance and to ensure compliance with pretreatment requirements; b. Pretreatment Program Summaa (PPS) A pretreatment program summary (PPS) on forms or in a format provided by the Division; c. Significant Non -Compliance Report (SNCR) A list of Industrial Users (IUs) in significant noncompliance (SNC) with pretreatment requirements, and the nature of the violations on forms or in a format provided by the Division; d. Industrial Data Summary Forms (IDSF) Monitoring data from samples collected by both the POTW and the Significant Industrial Users (SIUs). These analytical results must be reported on Industrial Data Summary Forms (IDSF) or on other forms or in a format provided by the Division; e. Other Information Copies of the POTW's allocation table, new or modified enforcement compliance schedules, public notice of Ns in SNC, a summary of data or other information related to significant noncompliance determinations for Ns that are not considered SlUs, and any other information, upon request, which in the opinion of the Director is needed to determine compliance with the pretreatment implementation requirements of this permit; 11. Public Notice The Permittee shall publish annually a list of Industrial Users (IUs) that were in significant noncompliance (SNC) as defined in the Permittee's Division -approved Sewer Use Ordinance with applicable pretreatment requirements and standards during the previous twelve month period. This list shall be published within four months of the applicable twelve-month period. [15A NCAC 02H .0903(b)(34), .0908(b)(5) and .0905 and 40 CFR 403.8(f)(2)(viii)] 12. Record Keeping The Permittee shall retain for a minimum of three years records of monitoring activities and results, along with support information including general records, water quality records, and records of industrial impact on the POTW and shall retain all other Pretreatment Program records as required by 15A NCAC 02H .0908(f). [15A NCAC 02H .0908(f); 40 CFR 403.12(o)] 13. Pretreatment Program Resources The Permittee shall maintain adequate funding and qualified personnel to accomplish the objectives of its approved pretreatment program. and retain a written description of those current levels of inspection. [I 5A NCAC 02H .0906(b)(9) and (10) and .0905; 40 CFR 403.8(f)(3), 403.9(b)(3)] 14. Modification to Pretreatment Programs Modifications to the approved pretreatment program including but not limited to local limits modifications, POTW monitoring of their Significant Industrial Users (SIUs), and Monitoring Plan modifications, shall be considered a permit modification and shall be governed by 40 CFR 403.18, 15 NCAC 02H .0114 and 15A NCAC 02H .0907. Version 1110912011 s CHARLOTTE:. November 2&, 2013 CITY OF CHARLOTTE CHARLOTTE-MECKLENBURG UTILITIES Environmental Management o � R Ong DEC 04 2013 t Teresa Rodriquez NPDES PermittingUnit DENR-WATER QUALITY POINT SOURCE BRANCH NCDENR-DWR 1617 Mail Service Center Raleigh, NC 27699-1617 Re: Draft NPDES Permit No. NCO030210 — Mallard Creek WRF, Mecklenburg County, NC Dear Ms. Rod iquez, Charlotte -Mecklenburg Utility Department (CMUD) has received and reviewed draft NPDES Permit No. NCO030210 issued to Mallard Creek WRF. Based on our review of the draft permit, we are submitting the following comments for your review and consideration in the issuance of our final permit: �. On the NPDES Fact Sheet for Mallard Creek WRF the Applicant Address Zip Code should to be changed from 28262 to 28217. The Zip Code of 28262 is correct for the Facility Address. 2. On the NPDES Fact Sheet for Mallard Creek WRF the Facility Name should be changed from Mallard Creek WWTP to Mallard Creek WRF. On the NPDES permit title page in the paragraph below our facility name and address beginning with "to receiving waters de," needs to be reordered/reconstructed. 4. We are requesting that footnote number 4 on the Effluent Limitations and Monitoring Requirements page be omitted. This requirement states that "monitoring for total zinc shall be performed in conjunction with the chronic toxicity test". Mallard Creek WRF is an exceptionally IJ_ f performing facility and has only failed one toxicity test in over nine years. This failure was not the result of an elevated zinc concentration. Our weekly sampling data for zinc over the last ! five years does not indicate elevated zinc levels at our effluent. Please see the summary of the zinc data submitted in our permit renewal application. Zinc sampling is conducted weekly during the same weeks as toxicity but could be on different days than the toxicity sample collection. Varying the days that we collect metals samples helps us to provide a more corn rehensive review of our wastewater characteristics and how they change throughout the week� www.charlottenc.gov 1 4222 Westmont Drive I Charlotte, NC 28217 1 PH: 704.336.4407 IN me E I IN Uff W 1_ CITY OF CHARLOTTE CHARLOTTE-MECKLENBURG UTILITIES Environmental Management d 5. We have requested reduced monitoring frequency for conventional pollutants based on Mallard Creek WRF meeting the requirements of an exceptionally performing facility. However, the field parameters sampling frequency requirement is daily in our draft permit. This would still require daily site visits by our lab staff to collect and analyze these three field parameters. Therefore, we are requesting a monitoring frequency of three times a week for our field parameters of dissolved oxygen, temperature, and pH. We appreciate your consideration of the above comments and requests for revision to our permit. If you have any questions regarding these comments or need any additional information, please call me at 704/336-4460 or email me at jjarrell@charlottenc.gov. You may also contact Shannon Sypolt, Water Quality Program Administrator, at 704/336-4581 or Darrell Dewitt, Mallard Creek WRF ORC, at 704/547- 0680. We look forward to hearing back from you soon. Sincerely, 0 Jacqueline A. Jarrell, P.E. Superintendent Environmental Management Division Charlotte -Mecklenburg Utility Department 4222 Westmont Drive Charlotte, NC 28217 www.charlottenc.gov 1 4222 Westmont Drive I Charlotte, NC 28217 1 PH: 704.336.4407 Borth Carolina Mecklenburg County REFERENCE: 145583 The Charlotte Observer Publishing Co. Charlotte, NC } ss Affidavit of Publication } Charlotte Observer NCDENR/DWQ/POINT SOURCE )000717666 Public Notice North Carolina Environmental Management Commission/NPDES Unit 1617 Mail Service Center Raleigh, NC 27699-1617 Before the undersigned, a Notary Public of said County and State, duly authorized to administer oaths affirmations, etc., personally appeared, being duly sworn or affirmed according to law, cloth depose and say that he/she is a representative of The Charlotte Observer Publishing Company, a corporation organized and doing business under the laws of the State of Delaware, and publishing a newspaper known as The Charlotte Observer. in the .city of Charlotte, County of Mecklenburg, and State of North Carolina and that as such he/she is familiar with the books, records, files, and business of said Corporation and by reference to the files of said publication, the attached advertisement was inserted. The following is correctly copied from the books and files of the aforesaid Corporation and Publication. PUBLISHED ON: 10/11/2013 AD SPACE: 44 LINES FILED ON: 10/11/2013 NAME: In Testimorty Whereof I have hereunto set Bu- PuNc Notice NoM Cerollna EnNideneMal Management ConenlaelonlNPC Unll 1617 Mott SoM. Center Welgh, NC 27a 1619 Notice of Intent to Issue a NPDES Waeiewa TITLE: DATE: and affixed my seal, the day and year aforesaid. My commission Expires: WT 1 1 2013 'vo' My com sai n Eaphn May 27, 2016 u To: Western NPDES Program Unit Surface Water Protection Section Attention: Charles Weaver Date: July 22, 2013 NPDES STAFF REPORT AND RECOMMENDATION County: Mecklenburg Permit No. NC0030210 PART I - GENERAL INFORMATION 1. Facility and Address: Mallard Creek WWTP Charlotte Mecklenburg Utilities 5100 Brookshire Boulevard Charlotte, N.C. 28216 2. Date of Investigation: July 9, 2013 3. Report Prepared By: Samar Bou-Ghazale, Env. Engineer II 4. Persons Contacted and Telephone Number: Shannon Sypolt, Water Quality Program Administrator, Matthew Nunez, Environmental Compliance, and Darrell Dewitt, Plant Supervisor, (704) 547-0680 Ext. 260. 5. Directions to Site: From the intersection of Highway 29 and Bruton Smith Boulevard in southwestern Cabarrus County, travel southwest on Highway 29 (cross into Mecklenburg Co.) approximately 1.1 miles. The entrance to the WWTP will be on the left side of Hwy 29 via a paved access road. 6. Discharge Point(s): List for all discharge points: Latitude: 35°19' S2" Longitude: 81° 42' S4" U.S.G.S. Quad No.: F 16 SW U.S.G.S. Name: Harrisburg, N.C. 7. Receiving stream or affected surface waters: Mallard Creek a. Classification: C b. River Basin and Subbasin No.: Yadkin Pee -Dee; 03-07-11 C. Describe receiving stream features and pertinent downstream uses: The receiving stream in this area is approximately 30-45 feet wide (bank to bank) and has considerable flow. Downstream uses are primarily agriculture. PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Volume of wastewater to be permitted: 12.0 MGD. b. What is the current permitted capacity of the wastewater treatment facility? 12.0 MGD C. Actual treatment capacity of the current facility (current design capacity)? 12.0 MGD d. Please provide a description of existing or substantially constructed wastewater treatment facilities: The existing treatment facility consists of coarse and fine bar screens, grit removal, day tanks (mini -equalization basin), storm flow equalization, five primary clarifiers, three trains in parallel of activated sludge treatment, three final clarifiers, effluent traveling bridge filters, ultraviolet disinfection, reuse distribution, sludge thickening, anaerobic digesters and sludge dewatering. e. Possible toxic impacts to surface waters: Toxicity is limited. PART IV - EVALUATION AND RECOMMENDATIONS The applicant is requesting renewal of this permit to discharge wastewater form Mallard Creek WRF to Mallard Creek in Mecklenburg County. Completion of the work authorized in an ATC issued last year will be completed in January 2014 according to Darrell Dewitt. The sludge generated at the facility is disposed of by Synagro under permit # WQ000057. The City of Charlotte is requesting reduction in monitoring frequencies for CBOD, NH3- N, TSS and Fecal Coliform as they claim they have met the criteria for an exceptional performing facility as outlined in the Division of Water Quality's guidance. The data summary for reduced NPFES permit monitoring frequencies is attachment # 10 of the application. We concur that they have met our criteria for reduced NPDES permit monitoring frequencies. We did not check for Criteria No.2 that deals with permitee/employees background check. The facilities appeared to be in good operational condition during the time of the investigation. Pending review and approval by the NPDES Unit, It is recommended that the NPDES permit be renewed and the request for reduction in monitoring be addressed. ,Signature of Report arer Date Water Quality Regional Eye"(, X0k4l DENR/DWR FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NC0030210 Facility Information Applicant/Facility Name: Charlotte Mecklenburg Utility Department/Mallard Creek WWTP Applicant Address: 4222 Westmont Dr., Charlotte NC 28262 Facility Address: 12400 Hwy 29 N, Charlotte, NC 28262 Permitted Flow 12 MGD Type of Waste: Domestic/Industrial Facility/Permit Status: Class IV, Renewal County: Mecklenburg Miscellaneous Receiving Stream: Mallard Creek Regional Office: Mooresville Stream Classification: C State Grid / USGS Quad: F15SW/Harrisbur 303(d) Listed? Yes Permit Writer: Teresa Rodriguez HUC: 0304010501 Date: 9/17/2013 Sub -basin 03-07-11 41,WW Lat. 350 19' 52" N Long. 80° 41' 54" W Drainage Area mi 37.5 Summer 7Q 10 (cfs) 0.64 0.64 Winter 7Q10 (cfs) 2.1 Average Flow cfs : 41 IWC (%): 97% SUMMARY Charlotte Mecklenburg Utility Dept. (CMUD) operates the Mallard Creek Water Reclamation Facility with a current permitted flow of 12.0 MGD. The treated domestic and industrial wastewaters are discharged to Mallard Creek in the Yadkin -Pee Dee River Basin. CMUD submitted an application for renewal on May 31, 2013. The permit expires on November 30, 2013. CMUD requested a reduction in monitoring frequency for CBOD, TSS, ammonia and fecal coliform. The Mallard Creek's treatment system consists of., an influent pump station, mechanical bar screens, two vortex grit chambers, two flow equalization basins, an intermediate pumping station, five primary clarifiers, two trickling filters, three biological treatment trains with anoxic zones and aeration basins to carry out activated sludge processes, three final clarifiers, two tertiary filters, UV disinfection and re - aeration, reuse pumping station, anaerobic digesters, a sludge holding tank, a waste thickening centrifuge, sludge drying beds and three standby power generators. A fourth final clarifier is expected to be online at the end of the year. CMUD has a full pretreatment program for all five municipalities it operates including the Mallard Creek facility. Mallard Creek receives wastewaters from two categorical industries: United Technologies Carrier, a metal finisher, and Mallard Creek Polymers which is regulated under the OCPSF standards. The pretreatment program will continue to be implemented in accordance with the permit. In addition to discharging via NPDES permit number NC0030210, this facility serves as a reclaimed water distribution facility under non -discharge permit WQ0013252, providing up to 4.0 MGD of reclaimed water for landscape irrigation. Class B biosolids are land applied in accordance with land application permit number WQ0000057. Fact Sheet: NPDES NC0030210 Permit Renewal Page 1 RECEIVING STREAM This facility discharges to Mallard Creek in the Yadkin River Basin, classified C waters in the Rocky River watershed, HUC 0304010501. Mallard Creek is listed as impaired in the NC 2012 303(d) list for copper and turbidity. DATA REVIEW DMR data were reviewed for the period of July 2009 to July 2013. Data are summarized in Table 1. The facility has an excellent compliance record with no permit limit violations for the past permit cycle. Table 1. Data Summary P�x'ameter , ; .,� � �>aifs � �` kA��°gam--`�' Flow MGD 8.15 16.3 6.1 CBOD mg/1 2.1 5.1 < 2 NH3N mg/1 0.16 3.7 < 0.1 TSS mg/1 2.7 10.1 < 2.5 H SU 6.7 7.5 6.3 DO m 8.3 10.4 6.4 Temperature °C 21.4 27.1 13.4 TN mg/1 17.1 31.1 10.7 TP mg/1 3.5 5 2.3 Fecal Coliform #/100 ml 2.2 480 < 1 Mercury ng/l 1.5 8.8 < 1 Zinc 1m 1 38 73 20 Data for CBOD, TSS, ammonia and fecal coliform was reviewed to determine compliance with the 2012 Guidance Regarding the Reduction of Monitoring Frequencies. The facility meets all the criteria specified in the guidance. Monitoring frequency for the above mentioned parameters will be reduced to 2/week. See attached Reduction in Frequency Evaluation. The following parameters are monitored through the pre-treatment program: arsenic, cadmium, chromium, copper, lead, molybdenum, nickel, selenium, and silver. Results for all parameters except copper and nickel were reported below detection levels. Reasonable Potential Analysis A reasonable potential analysis was performed for copper, zinc and nickel. Zinc present reasonable potential .to exceed the standards. Since Zinc is an action level standards no limits are proposed. Monitoring will be required on a quarterly basis. See attached RPA results. Mercury Evaluation A mercury evaluation was conducted in accordance with the Permitting Guidance developed for the implementation of the statewide Mercury TMDL to determine the need for a limit and Mercury Minimization Plan (MMP). Based on dilution the water quality based effluent limitation (WQBEL) for mercury is 12 ng/l. The technology based effluent limit (TBEL) is 47 ng/l. There were no detections above the WQBEL or TBEL. The facility had detections above 1 ng/l over the past five years, therefore a Mercury Minimization Plan will be required in the permit. A condition will be added to the permit describing the requirements for the MMP. tact Sheet: Nl:)I) S NC0030210 Permit Renewal Pkee 2 Table 2. Mercury Evaluation 2008 2009 _ 2010 2011 2012 Mereu Annual Avera a (n 1) 1.6 1.6 1.3 1.3 1.4 Mercury Annual Max n 6.7 2.5 2.8 2 8.8 LIMITS AND MONITORING REQUIREMENTS: Current conditions, as well as the basis for the limits are summarized in Table 3. Table 3. Current Conditions and Proposed Changes Parameters t Permit Limit /Condition Change from Basis For Condition/Change AtTected Previous Permit Flow MA - 12 MGD No changes T15A 2B .0505 CBOD5 Summer: 4.2 mg/I MA Limits — no change Limit based on modeling results for 6.3 mg/I WA Reduced monitoring protection of DO standard. Winter: 8.3 mg/I MA to 2/week Reduction in frequency based on 12.5 mg/1 WA exemplary compliance history. N113-N Summer: 1.0 mg/I MA Limit —no change Limit based on modeling results for 3.0 mg/1 WA Reduced monitoring protection of DO standard. Winter: 2.0 mg/I MA to 2/week Reduction in frequency based on 6.0 mg/1 WA exemplary compliance history. TSS 30 mg/1 MA Limit — no change Secondary treatment standards/40 45 mg/1 WA Reduced monitoring CFR 133 / T15A 2B .0406 to 2/week Reduction in frequency based on exemplary compliance history. Fecal coliformi 200/100 ml MA Limit —no change State WQ standards, T15A 2B 400/100 ml WA Reduced monitoring .0200 to 2/week Reduction in frequency based on exemplary compliance history. DO >6 No change State WQ standards, T15A 2B .0200 H 6 to 9 SU No change State WQ standards, T15A 2B Total Nitrogen Monitor & Report No change T15A 02B .0508 Total Phosphorus Total Zinc Monitor & Report No change Reasonable potential to exceed the water quality standard. Zinc is an action level standard, no limit will be implemented. Total Mercury Monitor and Report Eliminate monitoring See Mercury Evaluation above. 1. MA —Monthly Average; WA —Weekly Average; DM— Daily Max AQUATIC TOXICITY TESTING Permit requires chronic toxicity, ceriodaphnia dubia, 90%. The facility passed all the toxicity tests. INSTREAM MONITORING: The permit requires instream monitoring at one upstream location and two downstream locations. The permittee is not a member of the Yadkin -Pee Dee River Basin Association. Instream data shows DO above 5 mg/l upstream and downstream, temperature was within the water quality standards also. Values for temperature and DO are similar upstream and downstream of the discharge. Conductivity was consistently slightly higher downstream than upstream. Since July 2011 the permittee monitors for nitrate/nitrite, TKN, TN, TP, copper, zinc, total suspended residue and hardness. Values for all parameters are usually higher at the downstream stations. Fact Sheet NPDES NCO030210 Permit Renewal Page 3 W PRIORITY POLLUTANT ANALYSIS: The application includes the results of three priority pollutant analyses. No priority pollutants were detected. SUMMARY OF PROPOSED CHANGES: 1. Charlotte -Mecklenburg Utilities was replaced with Charlotte -Mecklenburg Utility Department, the current name used by the Department. 2. Monitoring frequencies for CBOD, TSS, fecal coliform and ammonia were reduced from daily to 2 times per week. The permittee meets the criteria for monitoring reduction based on their outstanding compliance history. 3. Special condition A. (5.) was added to the permit specifying the requirement to develop a Mercury Minimization Plan. PROPOSED SCHEDULE FOR PERMIT ISSUANCE: Draft Permit to Public Notice: Permit Scheduled to Issue: NPDES CONTACT: October 8, 2013 December 2, 2013 If you have questions regarding any of the above information or on the attached permit, please contact Teresa Rodriguez at 919-807-63 87. NAME: DATE: ATTACHMENTS: 1. Monitoring Frequency Evaluation 2. Reasonable Potential Analysis REGIONAL OFFICE COMMENTS: NAME: DATE: SUPERVISOR: DATE: Fact Sheet NI'DES NCO030210 Penmit Renewal Page a. Reduction in Frequency Evalaution Facility: Charlotte Mecklenburg Mallard Creek Permit No. NC0030210 Review period -(last 3 yrs) - - 7/2010 - 7/2013 Stream/Basin: Mallard Creek/Yadkin Fecal Compliance Review: BOD TSS Ammonia Coliform No more than one civil penalty assessment for each parameter OK OK OK OK Not currently under SOS OK OK OK OK Not on EPA Quarterly noncompliance report OK OK OK JOK Criminal Review Facility or employees convicted of CWA violations No Data Review Weekly average limit Monthly average limit 50% MA 3-yr mean (geo mean for FC) < 50%? 200% MA # samples >200% <35? 200% WA # samples >200% # of non - monthly limit < 20? violations < 2? CBOD (summer) 6.3 4.2 2.1 2 Ok 8.4 0 OK 0 0 0 0 ` - 0 800 0 OK 0 OK CBOD (winter) 12.5 8.31 4.21 2.1 OK 1 16.61 0 OK OK TSS 45 30 15 2.8 OK 60 0 OK OK Ammonia (summer) 3 1 0.5 0.13 OK 2 0 OK OK Ammonia (winter) 6 2 1 0.18 OK 4 0 OK OK OK Fecal Coliform 400/100 200/100 100 2.4 OK Mallard Creek WWTP REASONABLE POTENTIAL ANALYSIS Outfall• 001 NCO030210 Qw = 12 MGD Qw (MGD) = 12.00 1 Q 1 OS (cfs) = 0.64 7Q10S (cfs) = 0.64 7QIOW (cfs) = 2.10 30Q2 (cfs) = NO 3002 DATA Avg. Stream Flow, QA (cfs) = 41.00 Receiving Stream: Mallard Creek VWVTP WWTP/WTP Class: Class IV 1WC @ 1Q10S = 97.18% IWC @ 7QIOS = 96.67% IWC @ 7Q10W = 89.86% IWC @ 30Q2 = NIA 1WC @ QA = 31.21% Stream Class: C CHRONIC TEST CONCENTRATION = DEFAULT % ago@A PARAMETER TYPE & CRITERIA (2) ASTANDARDS N REASONABLE POTENTIAL RESULTS RECOMMENDED ACTION (1) a � z NC WQS / Applied %2 FAV / Yl # Det. Max Pred Allowable Cw Chronic Standard Acute Cw Acute: 7.5 No RP Copper (AL) NC 7 FW(7Q I Os) 7.3 ug/L 92 92 7 _ _ _ _ Chronic------- --- - — —-------------- --- No value > Allowable Cw Acute: 268.E Na RP Nickel NC 88 FW(7Q1Os) 261 ug/L 91 45 3.6 _ _ _ _ Chronic: ---- 91.0--- ------------------------ No value > Allowable Cw Acute: 68.9 RP, monitor quarterly Zinc (AL) NC 50 FW(7Q10s) 67 ug/L 200 200 67.2 _ _ _ _ _ Chronic----- 51.7-- -------------------------- 2 value(s) > Allowable Cw Acute: 0 0 N/A _ Chronic----------- — — — — --- — — — ----- - Acute: 0 0 N/A ---------- Chronic: - - - ------ Acute: 0 0 N/A _ Chronic: --------- ------ ----- — —--------- Acute: 0 0 N/A ----------- Chronic: - -- - — — -- ----------------- 3021ORPA 2013.xlsm, rpa Page 1 of 1 9/24/2013 REASONABLE POTENTIAL ANALYSIS 9 is 18 Copper (AL) Nickel Zinc (AL) Date Data BDL=112DL Results •' Date Data BDL=112DL Results •' Data Data BDL-112DL Results •' 1 1/4/2012 2.7 2.7 Std Dev. 0.8996 1 1/4/2012 2.0 1 Std Dev. 0,6695 1 7/14/2009 33 33 Std Dev. 5.2749 2 1/6/2012 3 3 Mean 3.5761 2 1/6/2012 2.0 1 Mean 1.6440 2 7/21/2009 38 38 Mean 37.3800 3 1/10/2012 2.7 2.7 C.V. 0.2516 3 1/10/2012 2.0 1 C.V. 0.4073 3 728/2009 33 33 C.V. 0.1411 4 1/18/2012 ( 2.6 2.6 n 92 4 1/18/2012 2.0 1 n 91 4 8/3/2009 35 35 n 200 5 124/2012 @r 2.4 2.4 5 1/24/2012 2.0 1 5 8/6/2009 32 32 6 2/1/2012 '- 2.4 2.4 Mult Factor= 1.18 6 2112012 _--2.0 1 Mult Factor = 1.30 68/112D09 39 39 Mull Factor 1.05 7 2/7/2012 2.7 2.7 Met. Value 6.2 ug/L 7 2R/2012 2.0 1 Max. Value 2.8 ug/L 7 8/18/2009 32 32 Max. Value 64.0 ug/L 8 2/11/2012 3 3 Max. Fred Cw 7.3 ug/L 8 2/11/2012 2.0 2 Max. Pred Cw 3.6 ug/L 8 8/25/2009 34 34 Max. Prod Cw 67.2 ug/L 9 2/15/2012 S'. 2.6 2.6 9 2/152012 2.0 1 9 911/2009 39 39 10 2121/2012 3 3 10 2/212012 20 1 10 9/8/2009 37 37 11 2/282012 ': 3.1 3.1 11 2282012 2.0 2 11 9/112009 32 32 12 3142012 l 2.6 2.6 12 3/42012 2.0 1 12 9/15/2DD9 39 39 13 3/132012 2.9 2.9 13 3/132012 2.2 2.2 13 91222009 38 38 14 320/2012 I( 2.6 2.6 14 3202012 2.2 2.2 14 9/29/2009 33 33 15 327/2012 2.6 2.6 15 3/272012 2.4 2.4 1510/312009 37 37 16 4/2/2012 2.7 2.7 16 4122012 2.3 2.3 16 10/7/2009 39 39 17 4/1012012 2.6 2.6 17 4/10/2012 2.1 2.1 17 10/13/2009 40 40 18 4/17/2012 2.6 2.6 18 4/17/2012 2.0 1 18 10/2012009 38 38 19 4/24/2012 P. 3.6 3.6 19 4/24/2012 2.0 1 19 10/27/2009 38 38 20 5/1/2012 3.5 3.5 20 5/1/2012 2.0 1 2011/212009 31 31 21 5/9/2012 4.6 4.6 21 5/9/2012 2.2 2.2 21 11/8/2009 41 41 22 5/152012 3.5 3.5 22 5/15/2012 2.0 1 2211/172009 30 30 23 522/2012 I' 4.7 4.7 23 5/22/2012 2.3 2.3 2311242009 32 32 24 5/30/2012 4.3 4.3 24 5/30/2012 2.0 1 24 121WO09 29 29 25 6/6/2012 4 4 25 6/6/2012 2.1 2.1 25 12/7/2009 - 29 29 26 6/12/2012 '.. 4.5 4.5 26 6/122012 2.0 1 26 12/15/2009 32 32 27 6/19/2012 " 5.3 5.3 27 6/192012 2.1 2.1 2712/222009 27 27 28 6/262012 5.4 5.4 28 6262012 2.0 1 28121292009 24 24 29 7/3/2012 5.8 5.8 29 719/2012 2.0 1 291/5/2010 31 31 30 7/102012 6.2 6.2 30 7/10/2012 2.3 2.3 301112/2010 .1 31 31 31 7/122012 5.5 5.5 31 7/12/2012 2.4 2.4 31 1l19I2010 29 29 32 7/17/2012 4.2 4.2 32 7/17/2012 2.0 1 32 1126/2010 - 24 24 33 7/242012 Er=.� 4.8 4.8 33 7/24/2012 2.4 2.4 33 213/2010 43 43 34 7/31/2012 4.6 4.6 34 7/31/2012 2.2 2.2 34 2/10/2010 31 31 35 BO/2012 4.7 4.7 35 8172012 2.6 2.6 35 2/16/2010 39 39 36 8/8/2012 4.4 4.4 36 8/8/2012 2.5 2.5 36 2/23/2010 36 36 37 8/10/2012 4.5 4.5 37 8/102012 2.6 2.6 37 3/2/2010 37 37 38 8/15/2012 4.6 4.6 38 8/152012 2.3 2.3 38 3/4/2010 30 30 39 8/21/2012 4.5 4.5 39 8/212012 2.4 2.4 39 3MI2010 39 39 40 8/28/2012 4.7 4.7 40 8282012 2.1 2.1 40 3/162010 34 34 41 9/5/2012 4.5 4.5 41 9/5/2012 2.3 2.3 41 3232010 33 33 42 9/8/2012 V 4.7 4.7 42 9/8/2012 2.8 2.8 42 3/30/2010 28 28 43 9/11/2012 C 4.5 4.5 43 911 V2012 2.7 2.7 43 4162010 37 37 44 9/18/2012 4.3 4.3 44 9/18/2012 2.0 1 44 4/13/2010 34 34 45 9/25/2012 ': 3.9 3.9 45 9/252012 2.1 2.1 45 4/16/2010 34 34 46 1012/2012 ;: 3.5 3.5 46 10/22012 2.0 1 46 4/20/2010 38 38 47 10/7/2012 i 4.9 4.9 47 10/72012 2.0 1 47 4/27/2010 34 34 48 10/16/2012 ;; 4 4 48 10/16/2012 2.1 2.1 48 5/3/2010 37 37 49 10/23/2012 3.9 3.9 49 10/232012 2.0 1 49 5/8/2010 34 34 50 10/302012 4.1 4.1 50 10/302012 2.0 1 SO 5/11/2010 32 32 51 11/5/2012 -' 4A 4.1 51 11/5/2012 2.0 1 51 5/18/2010 29 29 52 11/13/2012 :' : 3.1 3.1 52 11/13/2012 2.0 1 52 5252010 42 42 53 11/20/2012 3.8 3.8 53 11/20/2012 2.0 1 53 622010 33 33 54 11/272012 3.5 3.5 54 11/27/2012 2.0 1 54 6/6/2010 36 36 55 12/4/2012 3.8 3.8 55 12/4/2012 2.2 2.2 55 6/162010 35 35 57 12/1812012 2.7 2.7 57 12/182012 2.0 1 57 6/292010 45 45 30210RPA 2013.xism, data - 1 - 9/17/2013 REASONABLE POTENTIAL ANALYSIS 58 12/2812012 2.4 2.4 58 12/26/2012 < 2.0 1 58 7/7/2010 41 41 59 1/2/2013 3.2 3.2 59 1/5/2013 < 2.0 1 59 7/12/2010 45 45 60 1/5/2013 4.1 4.1 60 1/8/2013 2.7 2.7 60 7/20/2010 36 36 61 1/812013 3.6 3.6 61 1/16/2013 < 2.0 1 61 7/27/2010 64 64 62 1/152013 3 3 62 1/22/2013 < 20 1 62 8/4/2010 39 39 63 1/22/2013 3.4 3.4 63 129/2013 < 2.0 1 63 8/10/2010 42 42 64 1/29/2013 3 3 64 2162013 2.1 2.1 64 8/17/2010 37 37 65 2/6/2013 3.4 3.4 65 2/8/2013 2.0 1 65 8/24/2010 39 39 66 2/8/2013 3.2 3.2 66 211212013 < 2.0 1 66 8/31/2010 40 40 67 2/12/2013 3.1 3.1 67 2/1912013 < 2.0 1 67 9/8/2010 34 34 68 2/19/2013 3.1 3.1 68 2126/2013 2.0 1 68 9/1512010 37 37 69 226/2013 2.3 2.3 69 3/5/2013 < 2.0 1 69 921/2010 38 38 70 3/5/2013 2.9 2.9 70 3/7/2013 < 2.0 1 70 928/2010 42 42 71 3172013 2.4 2.4 71 3/12/2013 < 2.0 1 71 10/5/2010 43 43 72 3/12/2013 3.3 3.3 72 3/19/2013 < 2.0 1 72 10/12/2010 43 43 73 3/19/2013 2.7 2.7 73 3262013 < 2.0 1 73 10/14/2010 34 34 74 3/26/2013 2.2 2.2 74 4/3/2013 < 2.0 1 74 10/19/2010 46 46 75 4/3/2013 2.3 2.3 75 4/9/2013 2.0 2 75 10/26/2010 45 45 76 4/9/2013 2.5 2.5 76 41162013 2.2 2.2 7611/l/2010 40 40 77 4/16/2013 2.9 2.9 77 4232013 2.2 2.2 77111312010 41 41 78 4/23/2013 3.2 3.2 78 5/1/2013 2.2 2.2 78 11/9/2010 38 38 79 5/l/2013 2.1 2.1 79 5/8/2013 2.0 <'. 1 791111212010 35 35 80 5/8/2013 2.8 2.8 80 5/12/2013 2.4 2.4 8011/162010 46 46 81 5/12/2013 3.5 3.5 81 5/2112013 2.2 2.2 8111/232010 45 45 82 5121/2013 3 3 82 5129/2013 2.5 2.5 8211/302010 41 41 83 5/29/2013 4.1 4.1 83 6/52013 2.4 2.4 8312/412010 40 40 84 6/5/2013 3.4 3.4 84 6/11/2013 2.3 2.3 84 12/7/2010 42 42 85 6/112013 3.2 3.2 85 6/18/2013 2.7 2.7 85 12/14/2010 39 39 86 6118/2013 3.9 3.9 86 6/2512013 2.3 2.3 86 12/21/2010 45 45 67 6/25/2013 3.9 3.9 87 712/2013 2.4 2.4 87 12/29/2010 38 38 88 702013 3.5 3.5 88 7/9/2013 2.4 2.4 881/42011 31 31 89 7/92013 3.9 3.9 89 7/16/2013 2.1 2.1 891/92011 41 41 90 7/16/2013 3.6 3.6 90 7/232013 2.2 2.2 901/182011 49 49 91 723/2013 3.9 3.9 91 7/30/2013 2A 2.4 911252011 39 39 92 7/30/2013 4.5 4.5 92 92 2/12011 41 41 93 93 93 2/72011 33 33 94 94 94 2192011 34 34 95 95 95 2/15/2011 34 34 96 96 96 2/22/2011 34 34 97 97 97 3/1/2011 32 32 98 98 98 3/8/2011 29 29 99 99 99 3/15/2011 35 35 100 100 100 3/222011 34 34 101 101 101 31292011 31 31 102 102 102 4IW2011 31 31 103 103 103 4/122011 32 32 104 104 104 4/192011 31 31 105 105 106 4/26/2011 31 31 106 106 1 106 5/4/2011 37 37 107 107 107 5/10/2011 36 36 108 108 108 5/122011 F 36 36 109 109 109 5/172011 39 39 110 110 110 5242011 38 38 111 111 1116/12011 - 37 37 112 112 112 6WO11 38 38 113 113 113 6172011 41 41 114 114 114 6/142011 40 40 115 115 115 6/212011 42 42 116 116 116 6/2812011 41 41 117 117 117 7162011 35 35 118 118 118 7192011 35 35 119 119 119 7/192011 35 35 3021ORPA 2013.z1sm, data .2. 9/17/2013 REASONABLE POTENTIAL ANALYSIS 120 120 7/26/2011 44 44 121 1218/2/2011 40 40 122 122 8/7/2011 29 29 123 123 8/16/2011 32 32 124 124 8/23/2011 41 41 125 125 a/3012011 43 43 126 126 9/7/2011 39 39 127 127 9/12/2011 39 39 128 128 920/2011 45 45 129 129 9/27/2011 38 38 130 130 10/4/2011 41 41 131 - - 13110/11/2011 42 42 132 132 10/18/2011 40 40 133 133 10/25/2011 39 39 134 1341111/2011 39 39 135 135 11/9/2011 36 36 136 136 11/152011 35 35 137 137 1122/2011 42 42 138 138 11292011 39 39 139 139 12/62011 37 37 140 140 12IM011 30 30 141 141 12/132011 36 36 142 142 1220/2011 33 33 143 143 12/28/2011 29 29 144 144 1/4/2012 31 31 145 145 1/6/2012 35 35 146 146 1/10/2012 38 38 147 147 1/18/2012 35 35 148 146 1/24/2012 32 32 149 - 149 2/l/2012 35 35 150 150 2/7/2012 30 30 151 151 2/112012 38 38 152 152 2/15/2012 34 34 153 153 2/212012 35 35 154 154 2/282012 41 41 155 155 3/4/2012 33 33 156 156 3/132012 40 40 157 157 3/20/2012 36 36 158 158 3/27/2012 35 35 159 159 4/2/2012 35 35 160 160 4/1012012 33 33 161 161 4/172012 40 40 162 162 4/24/2012 38 38 163 163 5/1/2012 44 44 164 164 5/9/2012 42 42 165 165 5115/2012 34 34 166 166 5/22/2012 42 42 167 167 5W2012 36 36 168 168 6/62012 33 33 169 169 6/122012 37 37 170 170 6/192012 39 39 171 171 6/26/2012 40 40 172 172 7/32012 39 39 173 173 7/10/2012 42 42 174 174 7/12/2012 39 39 175 175 7/17/2012 35 38 176 176 7242012 39 39 177 177 7/312012 41 41 178 178 8172012 44 44 179 179 B/82012 37 37 180 180 8/10/2012 36 36 181 181 8/15/2012 34 34 30210RPA 2013.z1sm. data 3 - 9/17/2013 REASONABLE POTENTIAL ANALYSIS 182 182 8/21/2012 34 34 183 183 8/28/2012 40 40 184 184 9/5/2012 36 36 185 185 9/8/2012 34 34 186 186 9/11/2012 39 39 187 187 9/18/2012 39 39 188 188 9/25/2012 40 40 189 189 10/2=12 40 40 190 190 10/7/2012 37 37 191 191 10/1612012 48 48 192.-_..___ _. _. ._.. 19210/231201 _ 48 48 193 193 10/30/2012 45 45 194 194 11/5/2012 52 52 195 195 11/13/2012 47 47 196 196 H/20/2012 47 47 197 19711/27/2012 42 42 198 198 12/4/2012 51 51 199 199 12/11/2012 43 43 200 200 12/1812012 44 44 30210RPA 2013.xi m, data - < - 9/17/2013 ,N Ambient Monitoring System Station Summaries NCDENR, Division of Water Quality Basinwide Assessment Report Location: MALLARD CRK AT PAVILLION RD NR HARRISBURG Station #: Q7550000 Hydrologic Unit Code: 3040105 Latitude: 135.33232 Longitude: -80.71573 Stream class: C Agency: YPDRBA NC stream index: 13-17-5 Time period; 01/24/2007 to 12/12/2011 # # Results not meeting EL Percentiles results ND EL # % %Conf Min loth 25th 50th 75th 90th Max Field D.O. (mg/L) 85 0 <4 0 0 6 6.3 6.6 7.3 9.6 11.1 13.7 85 0 <5 0 0 6 6.3 6.6 7.3 9.6 11.1 13.7 pH (SU) 85 0 <6 0 0 6.3 6.8 6.9 7 7.1 7.3 7.4 85 0 >9 0 0 6.3 6.8 6.9 7 7.1 7.3 7.4 Spec. conductance 85 0 N/A 91 144 160 181 204 230 304 (umhos/cm at 25°C) Water Temperature (°C) 85 0 >32 0 0 1.6 5.6 9.8 20.3 23.8 25.5 27.5 Other Turbidity (NTU) 60 0 >50 4 6.7 2.5 3.6 5.2 8 11.8 31.1 130 Nutrients (mg/L) NH3 as N 1 60 11 N/A 0.01 0.01 0.03 0.06 0.13 0.32 1.25 NO2 + NO3 as N 60 3 N/A 0.01 0.03 0.1 0.26 0.48 0.81 1.36 TKN as N 1 60 9 N/A 0.2 0.2 0.26 0.42 0.73 1.22 3.65 Total Phosphorus 58 5 N/A 0.02 0.02 0.04 0.06 0.1 0.15 0.8 Fecal Coliform Screening(#/100mL) # results: Geonmean # > 400: % > 400: %Conf 16 i 169.5 1 6.2 I 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 Coliform) Stations with less than 10 results for a given parameter were not evaluated for statistical significance NCDENR, Division of Water Quality Ambient Monitoring System Report Yadkin -Pee Dee River Basin - September 2012 AMS-A92 Ambient Monitoring System Station Summaries NCDENR, Division of Water Quality Basinwide Assessment Report Location: MALLARD CRK AT SR 1300 NR HARRISBURG Station #: Q7570000 Hydrologic Unit Code: 3040105 Latitude: 35.33378 Longitude: -80.66817 Stream class: C Agency: YPDRBA NC stream index: 13-17-5 Time period: 01/24/2007 to 12/12/2011 # # Results not meeting EL Percentiles results ND EL # % %Conf Min IOth 25th 50th 75th 90th Max Field D.O. (mg/L) 85 0 <4 0 0 6.1 6.4 6.6 7.5 9.8 11.1 13.6 ' 85 0 <5 0 0 6.1 6.4 6.6 7.5 9.8 11.1 13.6 pH (SU) 85 0 <6 0 0 6.6 6.9 7 7.1 7.1 7.2 7.4 85 0 >9 0 0 6.6 6.9 7 7.1 7.1 7.2 7.4 Spec. conductance 85 0 N/A 105 148 162 173 197 216 269 (umhos/cm at 25°C) Water Temperature ff) 85 0 >32 0 0 1.7 5.8 9.8 20.3 23.7 25.6 27 Other Turbidity (NTU) 60 0 >50 3 5 2 3.8 5.6 8.2 15.8 36.5 180 Nutrients (mg/L) NH3 as N 60 13 N/A 0.01 0.01 0.01 0.06 0.11 0.16 1.56 NO2 + NO3 as N 60 0 N/A 0.04 0.13 0.24 0.37 0.88 6.91 14.52 TKN as N 60 9 N/A 0.2 0.2 0.3 0.55 1.01 1.34 3.48 Total Phosphorus 58 1 N/A 0.02 0.04 0.06 0.1 0.27 1.13 2.98 Fecal Coliform Screening(#/100mL) # results: Geomean # > 400: % > 400: %Conf: 16 138.9 1 6.2 UdW to r-c,V*M 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 Coliform) Stations with less than 10 results for a given parameter were not evaluated for statistical significance NCDENR, Division of Water Quality Ambient Monitoring System Report Yadkin -Pee Dee River Basin - September 2012 AMS-A93 t, �xARIJOTTE,,. May 10, 20 3 NPDES Permitting Unit 1617 Mail Service Center Raleigh, NC 27699-1617 CITY OF CHARLOTTE CHARLOTTE-MECKLENBURG UTILITIES Environmental Management �� Re: Permit Renewal Application and Reduced Monitoring q Fre uencie st Mallard Creek WRF- NPDES Permit #NC0030210 q Dear NPDES Unit: ti I Please find the enclosed NPDES permit renewal application for Mallard Creek WRF. Please note that Part G of the application, Combined Sewer Systems, is not applicable to Mallard Creek WRF. The application includes Attachments #1-10. The following is a summary of the attachments submitted with the application: 1. Attachment #1 summarizes the receiving stream total hardness and addresses Part A.10.e. 2. , Attachment #2 is a description of the treatment process and addresses Part A.11.a. and Part /Oft\ 13.3. 3. Attachment #3 addresses Part B.1. and explains the steps underway to minimize inflow and infiltration. 4. Attachment #4 includes the topographical map required in Part 6.2. 5.; Attachment #5 includes the flow schematic required in Part 6.3. 6. Attachment #6 includes a summary of scheduled improvements and the implementation schedule. 7. Attachment #7 includes the Priority Pollutants Analysis with organics results that are summarized in Part D. 8. Attachment #8 includes copies of the Toxicity reports completed by this facility from January 2008 through March 2013. This information is required in Part E.2. 9. Attachment #9 is the Significant Industrial User Information required in Part F.3. 10. Attachment #10 is a summary of our data and DWQ's criteria for reduced monitoring frequencies as an exceptionally performing facility. The analytical data summary information reported in Part A.12. — Effluent Testing Information, Part 13.6. - Effluent Testing Data, and Part D. - Expanded Effluent Testing Data include all the effluent testing results at Mallard Creek WRF from January 1, 2010 through March 31, 2013. We have an electronic summary file of all raw date used in the data summaries. If you would like a copy of the data summary, we can provide it to you, at your request. In addition to our permit renewal, we would also like to request a reduction of monitoring frequencies since 140� Mallard Creek WRF has met the criteria for an exceptionally performing facility as outlined in the Division of Water Quality's guidance. Please see Attachment #10 for a summary of our data and DWQ's criteria. www. ch a riottenc.gov 1 4222 Westmont Drive I Charlotte, NC 28217 1 PH: 704.336.4407 ooil�I3ARLOTTEh CITY OF CHARLOTTE CHARLOTTE-MECKLENBURG UTILITIES Environmental Management Please let us know if you have any questions or if you need any further information. If you do, please call Shannon Sypolt, Water Quality Program Administrator, at 704/3364581 or 7041634-6984 or Darrell Dewitt, ORC of Mallard Creek WRF, at 704/547-0680. You may also call me at 704/3364460. Thank you for your assistance with the renewal process. Respectfully, Jfequell A. Jarrell, P.E. Uerintendent, Environmental Management Division Chadotte-Mecklenburg Utilities Cc: D. Dewitt, S. Sypolt www.charlottenc.gov 1 4222 Westmont Drive I Charlotte, NC 28217 1 PH: 704.336.4407 MCA - Upstream of Mallard 7/17/12 8/20/12 9/19/12 10/23/12 11/19/12 12/20/12 1/7/2013 2/14/2013 3/13/2013 4/22/2013 Average: Count: MCB - Downstream of Mallard az 7/17/12 74 za s/io/ii v �I29 9/19/12 51 85 9/24/12 113 90 10/23/12 118 83 11/19/12 120 71 12/20/12 120 68 1/7/2013 110 46 2/14/2013 93 76 3/13/2013 57 4/22/2013 100 61 89 10 11 Receiving Stream's Hardness: �O R 75 Wastewater Mains = ForceMain Gravity LowPressure Sludge Wells / Drinking Water mallamparcel Streams County Boundary d One Mile Radius Around Mallard Creek WWTP i 1 � � e 0.125 025 0.5 0.75 1 Miles 1 &O-SO 'd5 Storage, osnzrzma c:ammomawn%rmnncc Charlotte -Mecklenburg Utility Department Mallard Creek WRF NPDES # NC0030210 Process Flow Description Attachment #3 — Description of Treatment — Additional Information OUTFALL NUMBER: 001 A.11.a I Description of Treatment Treatment consists of coarse and fine mechanical bar screens; grit removal; day 1 tanks; storm flow equalization; five primary clarifiers; three trains in parallel of activated sludge treatment; three final clarifiers; effluent traveling bridge filters; ultraviolet disinfection; reuse distribution; sludge thickening; anaerobic digesters; and sludge dewatering. B.3. I Process Flow Diagram or Schematic The attached flow schematic SC-1 (Attachment 2) shows the processes of the treatment facility along with bypasses. The plant is currently designed to treat 12.0 MGD of wastewater. Preliminary Treatment: Wastewater enters the plant through a 36-inch gravity sewer line to enter the headworks and influent pumping station. The flow entering the headworks flows through two mechanical screens where the screenings are compacted and conveyed to a dumpster. Flow from the screens is sent to two vortex grit removal basins of 30 MGD capacity. Primary Treatment: Following preliminary treatment, the wastewater splits between two cells of the flow equalization day tanks. From here, it is pumped to the distribution boxes. (DB), DB-1, DB-1A, and DB-2A and is distributed to the five existing primary clarifiers (PC-1 through PC-5). After primary treatment in the clarifiers, a part of the wastewater from PC-3 and PC-4 is directed to DB-2. It continues through to DB-3 to combine with wastewater from PC-1 and PC-2 to flow in to DB-10 and +_ 6: further to DB-5 where it is combined with return activated sludge (RAS). Flow from PC-5 flows to DB-17 where it combines with RAS. Secondary Treatment: The combined flow is split equally between DB-5 and DB-15 where it is combined with RAS and split between biological treatment trains 1 and 2. It goes through anoxic zone and aeration zone with internal recycle. The activated sludge process is carried out in a series of rectangular aeration basins followed by round aeration basin. Flow from DB-17 combines with RAS and flows into treatment train 3, through anoxic basins, and rectangular aeration basins. Following the aeration basin, flow from the round oxic basins of trains 1 and 2 are combined in DB-9 and split to final clarifiers (FC) FC-1 and FC-2. Flow from train 3 aeration basin is sent to FC-3. Tertiary Treatment: Combined secondary effluent from all the final clarifiers is sent to filter distribution structure (FDS) FDS-1 and FDS-2 for filtration. Filtered effluent is sent for UV disinfection and re -aeration structure where aeration takes place. The effluent is discharged through a 42" line into Mallard Creek. s. /Aftp Mallard Basin Inflow and Infiltration (I&I) Reduction Practices ,I Charlotte -Mecklenburg Utilities (Utilities) has maintained an established evaluation and rehabilitation program since the early 1990's. The purpose of this program is to restore and preserve hydraulic capacity, structural integrity, and to reduce corrective maintenance costs by addressing issues that cause SSOs. This includes maintaining and implementing an on -going I/I reduction plan. Multiple construction contracts are continually in place to address these issues. Through comprehensi a SSES efforts, including manhole inspections, smoke testing, CCTV, flow monitoring, c., areas are identified for rehabilitation and work orders assigned to a contractor. The work may include manhole rehabilitation, point repairs, pipe lining and pipe replacement. Since July 2603, Utilities' Rehabilitation Team has inspected 4,700 manholes, smoke tested 137,000 ft. of pipe, and performed CCTV inspection on 15,600 ft. of pipe, resulting in the following...... 670 manholes rehabbed/repaired, 750 inflow dishes installed and 3,150 ft. of pipe rehabbed/repaaced throughout the collection system. This does not include similar work performed by Utilities' Field Operation Division. Utilities also implemented a chemical root control program in March 2005 and we continue to maintain and expand that program. Utilities uses flow monitoring extensively to support engineering analyses, to prioritize sewer improvements, and to evaluate capacity issues and I/I loadings in the major trunk lines in the system. Utilities currently has 52 permanent flow meters installed throughout the service area (4 permanent meters in the Mallard Creek basin) and utilizes temporary flow metering on an as - needed basis. Charlotte -Mecklenburg Utilities Sewer Rehabilitation Program SSES Summary - Mallard Creek WWTP Basin Manhole Inspections Smoke Testing Work Performed Total Inspections Work Performed Total Footage Mallard Creek Trunk sewer complete; remainder of basin partially complete 4,740 Basin partially complete 137,914 Back Creek Total Svoolt. Shannon ``ubject: FW: I&I Info for Mallard WRF NPDES Permit Renewal From: Wirth, Mike Sent: Wednesday, May 15, 2013 6:26 AM To: Sypolt, Shannon Cc: Mark Lambert; Shirley, Keith Subject: FW: I&I Info for Mallard WRF NPDES Permit Renewal Shannon, In addition to Mark's info, here is the root control info: since we started the chemical root control program (3/14/05), we have treated 298,436 It (as of 5/14/13) in the Mallard WWTP basin. Note that this total includes some mains that have been treated more than once since March 2005. Mike W 6-0 Final Clarifier Improvements General Description The main purpose of this project is to add a fourth final clarifier for redundancy and a new distribution box that combines all three process trains. This project also includes oxic cycle improvements and upgrades to the biological trains one and two. Notice to Prodeed Date July 2012 Final Complet on Date November 20 � 3 Operational Date November 2013 �1 r_1 FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Mallard Creek WRF, NCO030210 Renewal Yadkin - PeeDee SUPPLEMENTAL APPLICATION INFORMATION PART F.INDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES 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.I. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program? X 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. 0 b. Number of ClUs. 2 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.8 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: Mallard Creek Polymers Mailing Address: 14700 Mallard Creek Rd. Charlotte, NC 28262 F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge. Produces organic chemicals, mostly styrene and buladlene polymers 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): StyrenelButadiene Polymers Raw material(s): Styrene, butadtene, and various other chemicals F.6. Flow Rate. a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per day (gpd) and whether the discharge is continuous or intermittent. 23338 gpd continuous 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. 1800 gpd continuous F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following: a. Local limits X Yes ❑ No b. Categorical pretreatment standards X Yes ❑ No If subject to categorical pretreatment standards, which category and subcategory? 40 CFR 414 Subpart D EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 19 of 22 n Aa1 ^1 FACILITY NAME AND PERMIT NUMBER: Mallard Creek WRF, NCO030210 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin - PeeDee 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, interferRnee) at the treatment works In the past three years? ❑ Yes X No If yes, describe each episode. EPA Form 3510-2A (Rev. 1-99). Replaces EPA Forms 7660.6 & 7550-22, Page 20 of 22 V. do% FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN: Mallard Creek WRF, NCO030210 Renewal Yadkin - PeeDee SUPPLEMENTAL; APPLICATION INFORMATION PART FANDUSTRIA� USER DISCHARGES AND RCRAICERCLA WASTES 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.I. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program? X 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. C. Number of non -categorical SIUs. 0 d. Number of ClUs. 2 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.8 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: United Technologies Caller Mailing Address: 9701 Old Statesville Rd. Charlotte. NC 28269 F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge. Operation Includes various metal working activities such as plasma -arc curing rolling shot blasting welding brazing machine assembly, washing insulation adhesive operation testing (leak testing and final testing) and painting heavy and light chillers Prior to painting. Carrier will operate two phosphating operations, which discharges continuously. F.S. 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): Large Capacity Chillers Raw material(s): Rinse Waters F.6. Flow Rate. C. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system In gallons per day (gpd) and whether the discharge is continuous or Intermittent. 7000 gpd continuous d. 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. 10500 gpd continuous F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following: a. Local limits X Yes ❑ No b. Categorical pretreatment standards X Yes ❑ No If subject to categorical pretreatment standards, which category and subcategory? 40 CFR433 Metal Finisher EPA Form 3510-2A (Rev. 1-99). Replaces EPA fortes 7550.6 & 7550-22. Page 21 of 22 �1 Ass%'A G 1 FACILITY NAME AND PERMIT NUMBER: Mallard Creek WRF, NCO030210 PERMIT ACTION REQUESTED: Renewal RIVER BASIN: Yadkin - PeeDee F.B. Problems atMe 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? ❑ Yes X No If yes, describe each episode. EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 22 of 22 V,. Solids Processi g and Biosolids Management at Mallard Creek WRF Mallard Creek WRF is currently operating one 1.0 MG and two .48MG primary digesters with an average detention time of 40-50 days. The average total solids of raw sludge to the primary digesters is 3.0-4.0%. Average sludge flow to the primary di ' esters is between 50-60k gallons/day. Mallard is currently operating one secondary digester with a volume of 480k allons. The average total percent solids of digested sludge at Mallard is 1.5%. For thickening and dewatering purp ses, Mallard uses 4 Humboldt/Bird centrifuges — two for thickening and two for dewatering. Dewatered solids are belt conveyed out of the dewatering building into a 24 cu. yard dump truck and taken to a cover storage pad onsite where they are stored in batches and tested. The average percent solids of Mallard's cake is 20%. All biosolids produced at Mallard Creek WRF are Class B biosolids and they are land applied in both North and South Carolina if they pass all required testing and are conforming solids according to 40 CFR Part 503. All non -conforming solids are landflled. ON OFF MoAlmmU No Ala m 647 m72�figd 2lmsgm lsxA�m,wo Qti Torque i PRIMARY CLARIFIER Nc4 F""ARY CLARIFIER 3 overview-Pl Alarms-F2 Power-F6 Trcndinq-FU��I� Lo on-F7'L ' M. DlnEec.Punp1 Di(sPe .Mwl)2 To F'� c. in 1 ��i¢q:vn Tn.Di e er 3 DSP I m = WP-1 Dsa 2 l M2= ESTER 07T.7 "I 2 � A. DIGESTER ® No. 3_ Nq.Ueo.Pl... 0 DiUP.c N \ l�=f� yflix�n41 \ . ]nft M 19 as 0.0 % I ecnl N tdl-Glonunl No Rlem 0.01 Htd1 Aufa WOM Comm OK Digesters 2, 3 and 4 receive raw sludge from primary clarifiers 1 through 4. DSPJ \ To Sand Pv t� Orying Beds /�Igesred Slodge Flow IFIT-15i OA �, Diryotnb 5liidgo Glow IFR-97.Q .19.6,fpl io SI dne l 0nildlan 7o�Bk.,in3.lollds To F; aLG.Lui�L? A. DIGESTER ' Cp1R1 4 No.1 TP 2 OFF OA X HYIJKanuel >41 No Ala m NC MUMS CtK 263 X Iixmac \W HNLMenual No Alarm Comm OK r.. 212g.B adh mA153Irs Digested sludge transfers into secondary digester 1 for solids handling removal. 14 WO A. DIGESTER _.... No.4 Tn lli en aerT Tn Final Clanfiees 1 7 i -Cp� No Alnrr k. m Ffo.7 90 gpm I I'1,_ Sq To Aeration Train O D.BOX- 3o'Ta D'ne_ No 15 scum ♦�� '.wv.a To ��loratlon Train I f ppy i: RAS Flow 0.02mOd � f% `,f RAAP� WAS TSS O465 mgfl 1 WAS TSS O450 mull (Ave) To BiomtiJx // y RAS Loading 0.0 mLbxlday /1 I auos �- WAS Loadmg 0.41bslmin / Fc y�ytl�t0yva_en�m'.t±__ FINAL CLARIFIER No.3 iS PUMPING ®. 1 Waste activated sludge (WAS) is removed from final clarifier 3 and pumped to solids handling for thickening. Thickened WAS is pumped to the digester complex and digester 5. L1 — FINAL CLARIFIER No.2 Ty rCZFP,c., FC,D�r.2 IL",Fi�c.} I® I Tn Finnl Clarifi r 3 ®'. e Sludge Lrvcl IAvgl 0.11 ft „I ufgc Lwcl 0-1d It Ob] TSS 2050 moll $cum Flow Rd 4li tp i Kl3 Ptunp2 To Aer ninn2.2 A i —24' 080X ?�"Ti 6~e, y Ta Aemtlnn Tr ain3., Nu9 [�J3k... fiumMjitJp g.:� 4. eL CUM Or OB 5 � , . e ti %...` ®i To Aenllo t Basln 2 3 3u Or 081J )" Pomp 2 l AI MGDSu�J iE � RAS Flow d 22 m/t/gd Mimi" MI WAS TSS 6183 m WA.SAy l 6WAS`Flow 1 02 2.. .1,4 � e 8n:a-ice- 911 gl .. RAS Loading 23.2 mLbs(day WAS Loading 310.8 Ih Imin r Gennnlhdo IISNfw LA2 MGD :a :r �® rt -- -- w - — :.RASA Waste activated sludge (WAS) is Sludge I. evel JAv01 M SI removed from final clarifiers 1 and 2 and pumped to solids handling for thickening. Thickened WAS is pumped to the digester complex and digester S. ' KI Ruc,i I I-CIn11.2 CC 16kei.3 ® '® IIIIIIII� Overview-Fi Alanas-F2 Pow,F6 Trending-FD Lv an-F1'L', fentrve Raw: wm i Se oints Main Drive Hydraulic Drive Lnhe Pump Common Fault Bowl Speed Difte,ential Speed Hydraulic Pressure Left Beating Temp Right floating Temp Motor Amps Right Horizontal Vibrmion Right Venial Vibration OS gpm 61.7 m 4 0rpm ® 0.0 rpm 0 Be, 71°F 72 T 0 amps 0.00 husec D.00 lwsec 3 2717 rpm 5.1 rpm 13 Bar $6 7,oagl ?SWa1ub :. To Polemer Acing Tanks •. _a-,----, :--.-- Maintenance To Poly ,er Smimt. Tn ks Lower Levcl 2 .� Ta Final [larifiar 3 ® - I.,, Digrvais ®'0 z029 ipni 0 0.7 rpm L.0 I 74 Bar 163°F O F i - "NUS Seosa(, LOU � 56 amps 0.001Nsec _.. 0.18 h0voc 0.07 in/sec m��, ON iNsec Oveme,F1 Alarms-F2 Power-F6 Trcndin -i- �o on-F72. LsnUr How' sfwroFeeaI Stuaeo FeauT SM1UIg6 peeUf-Slmly¢ '- To PnlvmerA n Tau Worm ��x. ��. Wolm � To Poly ter Stet ll^ T.,,, T F I 1 'I 1 Se ain16 Main Drive Cj Hydraulic Drive Luhe Pump CEnunon Fault u2 o n.t _.t,, r.._Lz _Lower Level T. Final Clai ili?r 3 . Te D•tenet