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HomeMy WebLinkAboutNC0004308_Draft Permit_20190514 4 STATE r,rr o a 4 • P a Q'�� ROY COOPER 11. „, Governor J, � 11�� MICHAEL S.REGAN = -a ; Secretary LINDA CULPEPPER A NORTH CAROLINA Director Environmental Quality May 14, 2019 Ms. Robyn Gross Director,Assets Management America Badin Business Park, LLC 201 Isabella St. Pittsburg, PA 15212 Subject: Draft NPDES Permit Permit NC0004308 Badin Business Park LLC. Stanly County Class I Facility Dear Ms. Gross: Enclosed with this letter is a copy of the Draft NPDES permit for your facility, modified as stipulated in the Settlement Agreement executed on May 3,2019.Please review this draft carefully to ensure thorough understanding of the requirements and conditions it contains. The following changes were made to the final permit sent to you on September 29, 2017 pursuant to the terms of the Settlement Agreement: • Outfalls 018 and 022 were moved to the stormwater section. These two outfalls are stormwater outfalls collecting surface runoff from the Alcoa-Badin Landfill. The outfalls will be sampled according to the stormwater sampling protocol [see Section B.(1.)]. • Language was added to A.(5.) for outfall 019 (section A.(6.) in the final permit) stating that" If no parameters are detected during the permit cycle, this outfall may be removed from the permit after a public notice process and consideration of public comments". • Footnote was included in section A.(1.) for outfall 005 stating that "The Division shall consider all effluent TRC values reported below 50 µg/ L to be in compliance with the permit. However,the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall below 50 µg/L". • Permittee has submitted priority pollutant scans (PPAs)for outfalls 005, 012, 013, 018 and 022. No parameters were detected except Total Cyanide for outfall 012 which was within the permit limits.No PPA is required for outfall 011 since it is the overflow for outfall 012. Therefore,special condition A.(9.),Priority Pollutant Analysis,was removed from the final permit. ��.rNNiI D_EQ-?.) ORumtvpU[a6pNmW WeBry� North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 11617Mall Service Center I Raleigh,North Carolina 27699-1617 ow 7m vanl • As a condition of the settlement agreement between Concerned Citizens and Badin Park, Badin Park submitted PPA for outfall 004.No parameter was detected in the pollutant scan except Fluoride which is within the permit limit. Therefore, no effluent limitations and monitoring requirements need to be added to the permit. • The outfall coordinates in the final permit were revised(see Table 1). • Mixing zone analysis for outfall 012 — Based on the submitted CORMIX dilution model, special condition C.(7.), Mixing Zone(Outfall 012),was modified to include the boundary of the mixing zone and the locations of three instream sampling stations. • Cyanide limits for outfall 012 - Based on the submitted CORMIX dilution model, Total Cyanide monthly average and daily maximum limits have been modified to 242 µg/L (Dilution Factor of 48.4) and 285 µg/L (Dilution Factor of 6.12), respectively [See section A.(3.)]. • Trichloroethylene(TCE) limits for outfall 012-Based on the submitted CORMIX dilution model,the monthly average and daily maximum limits for TCE have been modified to 121 µg/L (Dilution Factor of 48.4) and 181.5 µg/L (Dilution factor of 6.12), respectively [See section A.(3.)]. • Special condition A.(8.), Monitoring Study, has been removed from the permit in light of the fact that the Permittee has committed to conduct similar study under the Division of Waste Management(DWM). The NPDES standard conditions (Parts II and III) that are a part of the permit are not included in this draft document(cover,map,and Part I). The conditions are the same as in your current permit except that agency and division names have been updated. The latest version is available at https://bit.ly/2BZ4xxx and can be viewed online or downloaded as a PDF file. Concurrent with this notification the Division is publishing a notice in a newspaper having circulation in the general Stanly County area, soliciting public comments on this draft permit. Please provide any written comments you may have to the following: NCDEQ/DWR, NPDES Permitting Branch, 1617 Mail Service Center,Raleigh,NC 27699-1617 no later than 30 days after receipt of this draft permit. Following the 30-day public comment period,the Division will review all pertinent comments and take appropriate action prior to issuing a final permit. If you have questions concerning this draft permit, please contact me at(919) 707-3607 or by email at Qais.Banihani@ncdenr.gov. If you have any questions concerning this permit, please contact Qais Banihani at(919) 707-3607 or via email at gais.banihani@ncdenr.gov. Sincerely, --<6---).._.5 Qais Banihani, Environmental Engineer NPDES Complex Permitting Unit Page 2 of 3 Hardcopy: NPDES Files Ecopy: DWR/Mooresville Regional Office/Water Quality US EPA Region 4 Wastewater Operator Certification Group/Maureen Kinney WSS/Aquatic Toxicology Branch/Susan Meadows NC DEQ/DWR/PWS Regional Engineer/ Clinton Cook DWM/Hazardous Waste Section/Robert McDaniel Bethany Georgoulias/Environmental Engineer/DEMLR Page 3 of 3 Permit NC0004308 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER AND STORMWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM iJ • In compliance with the provisions of North Carolina General Statute 143-215.1, Other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission,and the Federal Water Pollution Control Act,as amended, Badin Business Park;,LLC.' </ is hereby authorized to discharge wastewater and stormwater from.a facility located at the Badiri'Business Park NC Hwy. 740&NCSR 1719 `1 , - _ Stanly County, _ to receiving waters designated as T to Little Mountai U n Creek and:Badin Lake(Yadkin River)in the Yadkin -Pee Dee River Basin > in accordance with effluent limitations,monitoring requirements,and other conditions set forth in Parts I,II, and III of this permit. ti \ N, f This permit shall become effective Moues XX,2019. This permit and the authorization to discharge shall expire at midnight on October 31,2022. Signed this day Month , a"2019. DRAFT Linda Culpepper,Director Division of Water Resources By Authority of the Environmental Management Commission Page 1 of 27 Permit NC0004308 SUPPLEMENT TO PERMIT COVER SHEET The authority to operate and discharge from this facility arises exclusively under the terms and conditions of this NPDES Permit. Therefore,upon the effective date of this permit,any and all previous NPDES Permits issued for this facility and bearing this permit number are revoked. Badin Business Park,LLC. is hereby authorized to: 1.Discharge the following: • stormwater at Outfalls 002,004,017,018,020,and 022 / • groundwater,stormwater and or fire protection water at Outfalls 005;012,,011 when flows exceed the capacity of the diffuser,and 013; �` • overflow from stormwater retention pond at Outfal1019. `' , all outfalls being located at or near Badin Business Park in Stanly County;and \ \ 2. Discharge such groundwater, stormwater and/or fire protection water from locations specified on the attached map into an unnamed tributary,to-Little Mountain Creek(Outfalls 004,005,017,018,and 022)and into Badin Lake (Yadkin River) (Outfalls'002,011,012,013,019,020)which are classified as Class "WS-IV" waters and Class "WS-IV CA & B" waters, respectively, in\the Yadkin-Pee Dee River Basin. 1 j - ' = All discharges shall be in-acco`rdance'with the attached schedules as follows: Part I: Monitoring,Controls,and Limitations for Permitted Discharges A.Effluent Limitations and Monitoring Requirements B. Stormwater Management Requirements' C.Special Conditions -- Part'II: Standard Conditions for NPDES Permits Part III: Other Requirements ,�N ' , Any other point source discharge to surface waters of the state is prohibited unless covered by another permit, authorization,or approval. • This permit doe's\not relieve the Permittee from responsibility for compliance with any other applicable federal,state,or locallaw,ruler,standard,ordinance,order,judgment,or decree. Page 2 of 27 Permit NC0004308 PART I SECTION A-EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on the effective date of the permit and lasting until expiration,the Permittee is authorized to discharge wastewater and stormwater associated with the activities described in its current NPDES permit application. Such discharges shall be monitored,controlled, and limited as specified below. A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS-Outfall 005 [15A NCAC 02B .0400 et seq.,02B .0500 et seq.] During the period beginning on the effective date of this permit and lasting-until the expiration date of this permit,the Permittee is authorized to discharge groundwater,stormwater;and fire protection water at Outfall 005 subject to the following effluent limitations and monitoring1 requirements: / I EFFLUENT LIMITATIONS MONITORING REQUIREMENTS PARAMETER Monthly Weekly Daily Measurement Sample Sample Average Average Maximum Frequency Type Location 2 Flow / Monthly Instantaneous E Total Suspended Solids `t Quarterly Composite-3"•' E Shall remain within the range ofi6.0``., /, N. ) PH to 9.0 standard units at all times�''� Monthly Grab' E Total Aluminum \ \Quarterly Composite 3 E Total Fluoride 4 1.8 mg/1 \ ‘-.w `-•, 24 mg/1 `Monthly Composite 3 E Total Cyanide 4 5 µg/1 \4 ; '`-, 46:6.µg/1 Monthly''`' Grab E � , Total Residual Chlorine 4 ti , 17;4ig%1'--_ Monthly Grab E Acute Toxicity 5 ``-p`'' , '\ ',. ;/ '-,. ''Quarterly Composite 3 E Footnotes: /�'. ,� -/ 1. Submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. Please See Special Conditions C.(6). �. 2. Sample locations:E c Effluent._ -''1> 3. The.Permittee mayyuse time-proportionate compositing or other sampling method provided that the /lternate method yields samples-that ar0easonably representative of the discharge during the ,'` 'monitori`ng period. ``°-.' / 4. The permittee'shall,use sufficiently sensitive test procedures approved under 40 CFR part 136 for the r ' , analysis of pollutants.A method is%',s''ufficiently sensitive"when: (1)The method minimum level(ML) ,N ' is at or below the level of the effluent limit established in the permit for the measured pollutant or ``pollutant parameter, or (2) the method has the lowest ML of the analytical methods approved under '4 CFR part 136 or required under 40 CFR chapter I,subchapter N or 0 for the measured pollutant or pollutant parameter.The Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance with the permit. However,the Permittee shall continue to record and submit all values reported-'by a North•Carolina certified laboratory (including field certified), even if these values fall below 50 µg/4„. ,,' 5. Acute Toxicity P/F Quarterly;see Special Condition C.(1). Page 3 of 27 Permit NC0004308 A.(2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS -Outfall 011 [15A NCAC 02B .0400 et seq.,02B .0500 et seq.] During the period beginning on the effective date of this permit and lasting until the expiration date of this permit, the Permittee is authorized to discharge fire protection waters, groundwater, and stormwater exceeding the Outfall 012 diffuser capacity at Outfall 011 subject to the following effluent limitations and monitoring)requirements: EFFLUENT LIMITATIONS MONITORING REQUIREMENTS PARAMETER Monthly Weekly Daily Measurement Sample Sample Average Average Maximum Frequency Type Location 2 Flow ,Monthly Instantaneous E Total Aluminum ',Quarterly'. Grab E Total Fluoride 3 24 mg/,Y•,ti Monthly, Grab E Total Cyanide 3 46.6,µg/1 ` ,Monthly ' . Grab E Total Suspended Solids /// Quarterly \\ Grab E Trichloroethylene(TCE)3.4 -<3.7 µg/1 Monthly Grab E Shall remain within the range of 6:0 , ' PH to 9.0 standard units at all times\ \JQuarterly Grab, ,' E Acute Toxicity 5 ; Quarterly Grab E Footnotes: �`� \' 1. Submit Discharge Monitoring Reports,electronically using`•NC DWR's eDMR application system. Please See Special Condition C.(6). ` `, �•. , 2. Sample locations:E-Effluent. 3. The permittee shall use'sufficiently sensitive test'procedures approved under 40 CFR part 136 for the analysis of pollutants:A method is"sufficiently sensitive,when:(1)The method minimum level(ML) is at or below/the level of the effluent limit,established in'the permit for the measured pollutant or ant pollut parameter; or (2) the method has'tlie lowest ML of the analytical methods approved under 40 CFR part 136 or.required/under 40 CFR chapter-I,subchapter N or 0 for the measured pollutant or pollutant parameter:,The Permittee shall report on its Discharge Monitoring Reports the actual rat laboory results for each effluent sample-tested. 4! :The facility may request that the Division review the data after collection of at least 12 data points to i determine f'there is reasonable potential to exceed the water quality standard or EPA criteria. If no / reasonable potential exists,,the Division may remove the limit and/or reduce the monitoring '' '.frequency. `t 5: Acute Toxicity Monitoring Quarterly;see Special Condition C.(2). \ I `'ti• ti f Page 4 of 27 Permit NC0004308 A.(3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS-Outfall 012 [15A NCAC 02B .0400 et seq.,02B .0500 et seq.] During the period beginning on the effective date of this permit and lasting until the expiration date of this permit, the Permittee is authorized to discharge fire protection waters, groundwater, and stormwater at Outfall 012(diffuser)subject to the following effluent limitations and monitoring'requirements: EFFLUENT LIMITATIONS MONITORING REQUIREMENTS PARAMETER Monthly Weekly Daily Measurement. Sample Sample Average Average Maximum Frequency Type Location 2 Flow Monthly `=Instantaneous E Total Suspended Solids ,Quarterly Composite 3 E pH Shall remain within the range of 6.0, Monthly _ Grab E to 9.0 standard units at all times `� �, ' , Total Cyanide 4 242 µg/1 T 285 µg/-1 `Monthly , Grab E Total Fluoride 4 7/ Quarterly Composite 3 E Total Aluminum ', Quarterly Composite 3, E Trichloroethylene(TCE)4,5 121 µg/1 181.54//1, Monthly Grab. ,•' E Chronic Toxicity 6 \ ' .:-'Quarterly Composite 3 E Footnotes: f� • .., 1. Submit Discharge Monitoring Reports,.electronically using NC DWR's eDMR application system. Please See Special Condition C.(6)`\ ' ''`1 2. Sample locations:E-Effluent. \ "-•__, _ \ti n � 3. The Permittee may use time-proportionate compositing,or other'sampling method provided that the alternate method yields samples that are reasonably,,representative of the discharge during the \ - monitoring period: /i" ',r , ' 4.' ,tt"e The perm `e shall use`sufficiently sensiti v,test procedures approved under 40 CFR part 136 for the analysis`of-pollutants.A method is sufficiently sensitive"when: (1)The method minimum level(ML) is at or below the'level of/the effluent limit established in the permit for the measured pollutant or pollutant parameter;or.(2) the method has the lowest ML of the analytical methods approved under 40 CFR part 136 or required under 40 CFR-chapter I,subchapter N or 0 for the measured pollutant or /,polluiant-parameter.'The'Permittee shall.r'eport on its Discharge Monitoring Reports the actual :'� laboratory results-for each�effluent sample tested. / 5. The facility may request that,the Division review the data after collection of at least 12 data points to �. - determine if there is 'reasonable potential to exceed the water quality standard or EPA criteria. If no \ reasonable potential exists, the- Division may remove the limit and/or reduce the monitoring `frequency. , 6. Chronic Toxicity Pass/Fail Quarterly;see Special Condition C.(3). Page 5 of 27 Permit NC0004308 A.(4.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS -Outfall 013 [15A NCAC 02B .0400 et seq.,02B .0500 et seq.] During the period beginning on the effective date of this permit and lasting until the expiration date of this permit, the Permittee is authorized to discharge groundwater and stormwater at Outfall 013 subject to the following effluent limitations and monitoring1 requirements: EFFLUENT LIMITATIONS MONITORING REQUIREMENTS PARAMETER Monthly Weekly Daily Measurement Sample Average Average Maximum Frequency Sample Type Location 2 Flow Monthly Instantaneous E Total Suspended Solids ,,Quarterly Composite 3 E Total Aluminum , Quarterly Composite 3 E Total Fluoride ,/'+` '-w Quarterly,, Composite 3 E Total Cyanide 4 5 µg/1 46.61µg/1 ti 'Monthly ' ' , Grab E Shall remain within the range of 6.0 pH to 9.0 standard units at all times Monthly `Grab ` E Acute Toxicity 5 '" ' Quarterly Compbite,3 "� E Footnotes: „, 1. Submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. Please See Special Condition C.(6). l - . 2. Sample locations:E-Effluent. ; ., 3. The Permittee may use time-proportionate`cbmpositing or other'`sampling method provided that the alternate method yields samples that are reasonably representative of the discharge during the monitoring period. / " - \ - 4. The permittee shall use 'sufficiently sensitive test procedures approved under 40 CFR part 136 for the analysis of pollutants. A method is"sufficiently sensitive" when: (1)The method minimum level (ML) is at or below the level of the effluent limit established in the permit for the measured pollutant or pollutant parameter;or(2)the method has the lowest ML of\the-analytical methods approved under 40 CFR part 136 or required under 40 CFR chapter I,subchapter N or 0 for the measured pollutant or pollutant parameter. The Permittee shall report on its Discharge Monitoring Reports the actual laboratory results for each effluent sample testd. ' 5.'` Acute Toxicity Monitoring Quarterly;see Special Condition C.(2). i ; - Page 6 of 27 Permit NC0004308 A.(5.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS -Outfall 019 [15A NCAC 02B .0400 et seq.,02B .0500 et seq.] During the period beginning on the effective date of this permit and lasting until the expiration date of this permit, the Permittee is authorized to discharge overflow from the retention pond at the Old Brick Landfill at Outfall 019 subject to the following effluent limitations and monitoring)requirements: EFFLUENT LIMITATIONS MONITORING REQUIREMENTS PARAMETER Monthly Weekly T Daily Measurement Sample Average Average Maximum Frequency Sample Type Location 2 Flow Semi-annual Instantaneous E Total Rainfall(inches)3 Semi-annual Rain gauge --- Total Suspended Solids ' Semi-annual Grab E Total Aluminum % Semi-annual Grab E Total Fluoride 4 / Semi-annual ', Grab E Total Cyanide 4 Semi-annual Grab E Shall remain within the"range of 6.0 pH to 9.0 standard units at all times, Semi-annual Grab E Acute Toxicity 5 Annual Grab E Footnotes: 1. Submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. Please See Special Condition C.(6):\`_ __ 2. Sample locations: E-Effluent. 3. For each sampled representative storm event the total precipitation must be recorded. An on-site rain gauge or local rain gauge reading must be recorded:- ' 4. The permittee shall use sufficiently sensitive test procedures approved under 40 CFR part 136 for the analysis of pollutants.A method is"sufficiently sensitive"_when: (1)The method minimum level(ML) is at or below the level of the effluent limit established in the permit for the measured pollutant or pollutant parameter; or (2) the method has the lowest ML of the analytical methods approved under 40 CFR part 136 or required under 40 CFR chapter I,subchapter N or 0 for the measured pollutant or pollutant parameter. The Permittee-shall report on its Discharge Monitoring Reports the actual • laboratory results for-each effluent-sample tested. 5. Acute Toxicity Monitoring Annual;see Special Condition C.(4). If no parameters are detected during the permit cycle, this outfall may be removed from the permit after a public notice process and consideration of public comments. ' Page 7 of 27 Permit NC0004308 SECTION B -STORMWATER MANAGEMENT REQUIREMENTS [G.S. 143-215.1(A) et seq., 15A NCAC 02H .0126 et seq.] B.(1.) STORMWATER MONITORING REQUIREMENTS-Outfalls 002,004,017,018,020&022 During the period beginning on the effective date of this permit and lasting until the expiration date of this permit,the Permittee is authorized to discharge stormwater at Outfalls 002,004,017,018,020 and 022. Such discharges shall be controlled,limited,and monitored as specified in this permit. 1. Analytical Monitoring: Analytical monitoring of stormwater discharges shall be performed as.specified below. All analytical monitoring shall be performed during a measureable storm event A measurable storm event is a storm event that results in an actual\discharge from the permitted site outfall. The previous measurable storm event must haye'been at least 72 hours prior. The 72-hour storm interval does not apply if the permittee is;able_• t`o:;document that a shorter interval is representative for local storm events during the sampling period, and the perfnittee obtains approval from the local DEMLR Regional Engineer(See Definitions). `• , Analytical Monitoring Requirements • , Discharge Characteristics Units Measurement Sample Sample Frequencyl Type2 Location3 Total Suspended Solids (TSS) ` mg/L semi-nnual, Grab SDO\ `• Chemical Oxygen Demand(COD) `mgit-- semi-annual ) Grab SDO Aluminum,Total Recoverable mg/L �`• semi-annual Grab SDO , _ ve > • Total Cyanide," t �\ mg/L' semi-annual Grab SDO Total Fluoride'\ ) mg/L \ 's, semi-annual Grab SDO ti ,1 `- - ,- , Rain Total.Rainfall_4 `, inches semi-annual, - f, ` ' Gauge Footnotes: •, '> `"IN.Measurement Frequency: Twice"per year (unless other provisions of this permit prompt monthly sampling) during a me asureable s orm event,until either another permit is issued for this facility or until-thi's permit is revoked or rescinded. If the facility is monitoring monthly because of Tier Two or Three response actions under the previous permit, the facility shall continue a monthly monitoring and reporting'schedule`n:Tier Two or Tier Three status until relieved by the provisions of this permit by DEMLR.`�, - ,/ 2. Grab samples shall'be collected within the first 30 minutes of discharge. When physical separation between outfalls'prevents collecting all samples within the first 30 minutes, sampling shall begin within the first 30 minutes,and shall continue until completed. 3. Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative outfall status (ROS)has been granted. A copy of DEMLR's letter granting ROS shall be kept on site. 4. For each sampled measureable storm event,the total precipitation must be recorded. An on-site rain gauge is required. Where isolated sites are unmanned for extended periods of time,a local rain gauge reading may be substituted for an on-site reading. Page 8 of 27 Permit NC0004308 The permittee shall complete the analytical samplings in accordance with the schedule specified below, unless adverse weather conditions prevent sample collection. A minimum of 60 days must separate Period 1 and Period 2 sample dates,unless monthly monitoring has been instituted under a Tier Two response. Inability to sample because of adverse weather conditions must be documented in the Stormwater Pollution Prevention Plan (SPPP) and recorded on the DMR. The permittee must report the results from each sample taken within the monitoring period (see Part II, Section D). However, for purposes of benchmark comparison and Tiered response actions,the permittee shall use the analytical results from the first sample with valid results within the monitoring period. Monitoring Schedule Semi-Annual Start Date End Date Monitoring Events1,2 (All Years)3 (All Years)3 Period 1 January 1 , June 30 Period 2 July 1 / December 31 Footnotes: 1 Maintain semi-annual monitoring until eitheranother permit is issued for this facility or until this permit is revoked or rescinded. The permittee must submit an application foi renewal of coverage before the submittal deadline (180 days before expiration) to be,considered for,)renewed coverage under the permit. The permittee must continue analytical monitoring throughout the permit renewal process,even if a renewal permit is not issued until after expiration of this permit. 2 If no discharge occurs during the sampling period, the permittee must submit a monitoring report indicating"No Flow" or"No Discharge'within 30 days of the end of the sampling period. 3 Monitoring periods remain consistent'through the permit term and through the renewal process. !; Failure to monitor semi-annually per permit terms may result in DEMLR requiring monthly monitoring for all parameters,for a specified'time period. "No,discharge" from an outfall during a monitoring period does not constitute failure to monitor,as long as it is properly recorded and reported. The permittee shall compare monitoring results to the benchmark values below. Exceedances of benchmark values-require the permittee to increase monitoring, increase management actions, increase record keeping, and/or install stormwater Best Management Practices(BMPs)in a tiered program. See below the descriptions of Tier One,Tier Two,and Tier Three response actions. In the event that DEMLR releases the permittee from continued monthly monitoring and 'reporting under Tier Two or Tier Three, DEMLR's release letter may remain in effect through subsequent,-reissuance of this permit, unless the release letter provides for other conditions or duration. iI 1 i Page 9 of 27 Permit NC0004308 Benchmark Values for Analytical Monitoring Discharge Characteristics Units Benchmark Total Suspended Solids(TSS) mg/L 100 Chemical Oxygen Demand mg/L 120 Aluminum,Total Recoverable mg/L 0.75 Total Cyanide mg/L 0.02 Total Fluoride mg/L 6 The benchmark values above are not permit limits but should be used as guidelines for implementation of the permittee's SPPP. An exceedance of a stormwater benchmark value is not a permit violation; however, failure to respond to the exceedance as outlined in this permitjs a violation of permit conditions. Tier One If:The first valid sampling results are above a benchmark value for,anyparameter at any outfall; Then:The permittee shall: ' 1. Conduct a stormwater management inspection of the facility within two weeks of receiving sampling results. - 2. Identify and evaluate possible causes of the benchmark value exceedance. 3. Identify potential, and select the specific feasible: source controls, op6rational controls, or physical improvements to reduce concentrations of the parameters of concern. 4. Implement the selected feasible actions within two months of the inspection. 5. Record each instance of a Tier One response in the SPPP. Include the date and value of the benchmark exceedance,the inspection date,the personnel conducting the-inspection,the selected actions,and the date the selected actions were implemented. 6. Note: Benchmark exceedances for a different parameter separately trigger a tiered response. Tier Two If:The first valid sampling,results from two consecutive monitoring periods are above the benchmark `values for any specific parameter at a`specific discharge outfall; Then:The permittee shall: , • 1. Repeat all the required actions outlined above in Tier One. 2. Immediately institute monthly monitoring and reporting for all parameters. The permittee shall conduct monthly monitoring at every outfall where a sampling result exceeded the benchmark value for two consecutive samples. Monthly (analytical and qualitative) monitoring shall continue until three consecutive sample results are below the benchmark values or within benchmark range. 3. If no discharge occurs during the sampling period, the permittee is required to submit a monthly monitoring report indicating"No Flow" to comply with reporting requirements. 4. Alternatively, in lieu of steps 2 and 3, the permittee may, after two consecutive exceedances, exercise the option of contacting the DEMLR Regional Engineer as provided below in Tier Three. The Regional Engineer may direct the response actions on the part of the permittee as provided in Tier Three, including reduced or additional sampling parameters or frequency. 5. Maintain a record of the Tier Two response in the SPPP. 6. Continue Tier Two response obligations throughout the permit renewal process. Page 10 of 27 - Permit NC0004308 Tier Three If:The valid sampling results required for the permit monitoring periods exceed the benchmark value for any specific parameter at any specific outfall on four occasions,the permittee shall notify the DEMLR Regional Engineer in writing within 30 days of receipt of the fourth analytical results; Then:The Division may but is not limited to: • require that the permittee revise, increase, or decrease the monitoring and reporting frequency for some or all of the parameters herein; • require sampling of additional or substitute parameters; • require the permittee to install structural stormwater controls; • require the permittee to implement other stormwater control measure's; • require the permittee to perform upstream and downstream monitoring to characterize impacts on receiving waters;or • require the permittee implement site modifications to qualify fora No Exposure Exclusion; • require the permittee to continue Tier Three obligations through the permit renewal process. 2. Qualitative Monitoring Requirements The purpose of qualitative monitoring is to evaluate the effectiveness of the Stormwater Pollution Prevention Plan(SPPP)and identify new potential sources of stormwater pollution. Qualitative monitoring of stormwater outfails must be performed during a measurable storm event. Qualitative monitoring requires a visual inspection of each stormwater outfall regardless of representative outfall status. Qualitative monitoring shall be performed semi-annually as specified below, and during required analytical monitoring events (unless the permittee is required to perform further qualitative monitoring per the Qualitative Monitoring Response, below). Inability to monitor because of adverse weather conditions must be documented in the SPPP and recorded on the Qualitative Monitoring Report form (see Adverse.Weather in Definitions). Only SDOs discharging stormwater associated with industrial activity must be monitored(See Definitions). In the event an atypical condition is noted at a stormwater discharge outfall,the permittee shall document the suspected cause of the condition- and any actions taken in response to the discovery. This documentation will be maintained with the SPPP. i - Page 11 of 27 Permit NC0004308 Qualitative Monitoring Requirements Discharge Characteristics Frequencyl Monitoring Location Color semi-annual SDO Odor semi-annual SDO Clarity semi-annual SDO Floating Solids semi-annual SDO Suspended Solids semi-annual SDO Foam semi-annual / SDO Oil Sheen semi-annual SDO Erosion or deposition at the outfall semi-annual SDO Other obvious indicators '` of stormwater pollution semi-annual ` SDO Footnotes: 1. Monitoring Frequency: Twice per year during.a measureable storm event unless other provisions of this permit prompt monthly monitoring. See schedule of monitoring periocls-through the end of this permitting cycle. The permittee must continue qualitative monitoring throughout the permit renewal process until anew permit is issued. 2. Monitoring Location: Qualitative monitoring shall be performed at each stormwater discharge outfall(SDO)regardless of representative outfall status. \ A minimum of 60 days must separate mo iitoring.dates,unless additional sampling has been instituted as part of other analytical monitoring requirement's in this permit: -- If the permittee's qualitative monitoring indicates that existing stormwater Best Management Practices (BMPs) are ineffective, or that significant store water contamination is present, the permittee shall investigate potential causes,evaluate the feasibility, of corrective action,and implement those corrective actions within 60 days;per the Qualitative Monitoring Response, below. A written record of the permittee's investigation,'evaluation,and-response actions shall be kept in the SPPP. Qualitative Monitoring Response Qualitative monitoring is for the purposes of evaluating SPPP effectiveness,identifying new potential sources of stormwater pollution,and prompting the permittee's response to pollution. If the permittee repeatedly'fails to respond effectively to correct problems identified by qualitative monitoring, or if the discharge causes or contributes to a water quality standard violation, DEMLR may but is not limited to: '. • require that the permittee revise,increase,or decrease the monitoring frequency for some or all parameters(analytical or qualitative) • require the permittee to install structural stormwater controls; • require the permittee to implement other stormwater control measures; • require the permittee to perform upstream and downstream monitoring to characterize impacts on receiving waters;or • require the permittee implement site modifications to qualify for a No Exposure Exclusion. Page 12 of 27 Permit NC0004308 B.(2.) STORMWATER POLLUTION PREVENTION PLAN The permittee shall develop and implement a Stormwater Pollution Prevention Plan(SPPP). The SPPP shall be maintained on site unless exempted from this requirement by DEMLR. The SPPP is public information in accordance with Part II,Standard Conditions,Section E Paragraph 10 of this permit. The SPPP shall include, at a minimum,the following items: 1. Site Overview. The Site Overview shall provide a description of the physical facility and the potential pollutant sources that may be expected to contribute to contamination of stormwater discharges. The Site Overview shall contain the following: (a) A general location map (USGS quadrangle map or appropriately drafted equivalent map), showing the facility's location in relation to transportation routes and surface waters;the name of the receiving waters to which the stormwater outfalls discharge,or if the discharge is to a municipal separate storm sewer system, the name of the municipality and the ultimate receiving waters; and accurate latitude and longitude of the points of stormwater discharge associated with"industrial activity. The general location map (or alternatively the site map) shall identify whether any receiving waters are impaired (on the state's 303(d)list of impaired waters)or if the site is located in a watershed for which a TMDL has been established,and what the parameters of concern are. (b) A narrative description of storage practices,loading,and uploading activities,outdoor process areas, dust or particulate generating or control processes; and waste disposal practices. A narrative description of the potential pollutants that could be expected to be present in the stormwater discharge from each outfall. (c) A site map drawn at a scale sufficient'to clearly depict: the site property boundary;the stormwater discharge outfalls; all on-site and adjacent surface waters and,wetlands; industrial activity areas (including storage.of materials, disposal area process-areas,loading and unloading areas, and haul roads); site topography 'and finished grade; all drainage features and structures; drainage area boundaries and total contributing area for'each outfall; direction of flow in each drainage area; industrial activities occurring in each drainage area; buildings; stormwater Best Management Practices (BMPs); and impervious surfaces. The site map must indicate the percentage of each drainage area that is'impervious,and the site map must include a graphic scale indication and north arrow. _ (d) A list of significant spills or leaks of pollutants during the previous three(3)years and any corrective actions taken to mitigate spill impacts. (e) Certification that the stormwater outfalls have been evaluated for the presence of non-stormwater discharges. The permittee shall re-certify annually that the stormwater outfalls have been evaluated for the presence of non-stormwater discharges. If non-stormwater discharges are present, the permittee shall identify the source and record whether the discharge is otherwise permitted (by rule or a different permit). The permittee shall evaluate the environmental significance of the non- stormwater discharges and include a summary written record with the certification.The certification statement and summary written record shall be retained with the SPPP,and shall be dated and signed in accordance with the requirements found in Standard Conditions for NPDES Permits,Part II,Section B.11(b). (f) If a permanent source of non-stormwater flow is identified in accordance with B.(2)1.(e)the permittee shall notify DWR and DEMLR.The notification must include a description and frequency of discharge for the identified non-stormwater flow.The notification must be submitted to the following addresses: Page 13 of 27 Permit NC0004308 DWR/NPDES Complex Permitting Unit 1617 Mail Service Center Raleigh,NC 27699-1617 DEMLR/ Stormwater Permitting Program 1612 Mail Service Center Raleigh,NC 27699-1612. 2. Stormwater Management Strategy. The Stormwater Management Strategy shall contain a narrative description of the materials management practices employed which control or minimize the stormwater exposure of significant materials, including structural and nonstructural measures. The Stormwater Management Strategy,at a minimum,shall incorporate the following: (a) Feasibility Study. A review of the technical and economic feasibility of changing the methods of operations and/or storage practices to eliminate or/reduce exposure of materials and processes to rainfall and run-on flows. Wherever practical, thepermittee shall prevent exposure of all storage areas, material handling operations, and manufacturing or fueling operations. In areas where elimination of exposure is not practical, this review shall document the feasibility of diverting the stormwater run-on away from areas of potential contamination. . (b) Secondary Containment Requirements and Recordss.. Secondary containment is required for: bulk storage of liquid materials; storage in any amount of Section 313 of Title III of the Superfund Amendments and Reauthorization:Act(SARA) water priority chemicals; and storage in any amount of hazardous substances,in order to prevent leaks and spills from contaminating stormwater runoff. A table or summary of all such tanks and stored materials and their associated secondary containment areas shall be maintained. If the secondary containment devices are connected to stormwater conveyance systems,the connection shall;be controlled by.manually activated valves or other similar devices(which shall be-secured closed with a'locking mechanism). Any stormwater that accumulates in the containment area shall be at a minimum visually observed for color, foam, outfall staining, visible sheens and dry weather flow, prior to release of the accumulated stormwater. Accumulated stormwater shall be released)if found to be uncontaminated by any material. Records documenting the individual making the observation,the description of the accumulated stormwater, and the date and time of the release-shall be kept for a period of five (5)years. For facilities'subject to a federal oil Spill Prevention, Control,4and Countermeasure Plan (SPCC), any portion of the SPCC Plan fully compliant with the requirements of this permit may be used to demonstrate compliance with this r permit. (c) BMP Summary. A listing of site structural and non-structural Best Management Practices (BMPs) shall-be provided. The installation and implementation of BMPs shall be based on the assessment of the potential for sources to contribute significant quantities of pollutants to stormwater discharges and on data collected through monitoring of stormwater discharges. The BMP Summary shall include a written record of the specific rationale for installation and implementation of the selected site BMPs. The BMP Summary shall be reviewed and updated annually. 3. Spill Prevention and Response Procedures. The Spill Prevention and Response Procedures (SPRP)shall incorporate an assessment of potential pollutant sources based on a materials inventory of the facility. Facility personnel responsible for implementing the SPRP shall be identified in a written list incorporated into the SPRP and signed and dated by each individual acknowledging their responsibilities for the plan. A responsible person shall be on-site at all times during facility operations that have increased potential to contaminate-stormwater runoff through spills or exposure of materials associated with the facility operations. The SPRP must be site stormwater specific. Therefore, an oil Spill Prevention Control and Countermeasure plan (SPCC) may be a component of the SPRP,but may not be sufficient to completely Page 14 of 27 Permit NC0004308 address the stormwater aspects of the SPRP. The common elements of the SPCC with the SPRP may be incorporated by reference into the SPRP. 4. Preventative Maintenance and Good Housekeeping Program. A preventative maintenance and good housekeeping program shall be developed and implemented. The program shall address all stormwater control systems(if applicable),stormwater discharge outfalls,all on-site and adjacent surface waters and wetlands, industrial activity areas (including material storage areas, material handling areas, disposal areas, process areas, loading and unloading areas, and haul roads), all drainage features and structures, and existing structural BMPs. The program shall establish schedules of inspections, maintenance, and housekeeping activities of stormwater control systems, as well as facility equipment, facility areas, and facility systems that present a potential for stormwater exposure or stormwater pollution where not already addressed under another element of the SPPP. Inspection of material handling areas and regular cleaning schedules of these areas shall be incorporated into the program. Timely compliance with the established schedules for inspections,maintenance,and housekeeping shall be recorded and maintained in the SPPP. 5. Facility Inspections. Inspections of the facility and all stormwater systems shall occur as part of the Preventative Maintenance and Good Housekeeping Program at a minimum on a semi-annual schedule, once during the first half of the year(January to June),and once during the second half(July to December), with at least 60 days separating inspection dates (unless performed more frequently than semi-annually). These facility inspections are different from, and in addition to, the stormwater discharge characteristic monitoring at the outfalls required in Part I Section B.(1.). 6. Employee Training. Training programs shall be developed and training provided at a minimum on an annual basis for facility personnel with responsibilities for: spill response and cleanup, preventative maintenance activities, and for any of the facility's operations that have the potential to contaminate stormwater runoff. The facility personnel responsible for implementing the training shall be identified, and their annual training shall be documented by the signature of each employee trained. 7. Responsible Party. The SPPP shall identify a specific position or positions responsible for the overall coordination, development, implementation, and revision of the SPPP. Responsibilities for all components of the SPPP shall be documented and position assignments provided. 8. SPPP Amendment and Annual Update. The permittee shall amend the SPPP whenever there is a change in design, construction, operation, site drainage, maintenance, or configuration of the physical features which may have a significant effect on the potential for the discharge of pollutants to surface waters. All aspects of the SPPP shall be reviewed and updated on an annual basis.The annual update shall include: (a) an updated list of significant spills or leaks of pollutants for the previous three (3) years, or the notation that no spills have occurred(element of the Site Overview); (b) a written re-certification that the stormwater outfalls have been evaluated for the presence of non- stormwater discharges (element of the Site Overview); (c) a documented re-evaluation of the effectiveness of the on-site stormwater BMPs (BMP Summary element of the Stormwater Management Strategy). (d) a review and comparison of sample analytical data to benchmark values (if applicable) over the past year, including a discussion about Tiered Response status. The permittee shall use the Annual Summary Data Monitoring Report (DMR) form, available from the DEMLR Stormwater Permitting Program's website (See 'Monitoring Forms' here: http://portal.ncdenr.org/web/Ir/npdes-stormwater). The Director may notify the permittee when the SPPP does not meet one or more of the minimum requirements of the permit. Within 30 days of such notice,the permittee shall submit a time schedule to the Director for modifying the SPPP to meet minimum requirements. The permittee shall provide Page 15 of 27 Permit NC0004308 certification in writing in accordance with Part II, Standard Conditions, Section B, Paragraph 11 to the Director that the changes have been made. 9. SPPP Implementation. The permittee shall implement the Stormwater Pollution Prevention Plan and all appropriate BMPs consistent with the provisions of this permit,in order to control contaminants entering surface waters via stormwater. Implementation of the SPPP shall include documentation of all monitoring, measurements, inspections, maintenance activities, and training provided to employees, including the log of the sampling data and of actions taken to implement BMPs associated with the industrial activities,including vehicle maintenance activities. Such documentation shall be kept on-site for a period of five(5)years and made available to the Director or the Director's authorized representative immediately upon request. B.(3.) STORMWATER DEFINITIONS 1. Adverse Weather ' Adverse conditions are those that are dangerous or create inaccessibility for personnel, such as local flooding, high winds, or electrical storms, or situations that otherwise make sampling impractical. When adverse weather conditions prevent the collection of samples during the sample period, the permittee must take a substitute sample or perform a visual,assessment during the next qualifying storm event Documentation of an adverse event (with date, time and written.narrative) and the rationale must be included with your SPPP records. Adverse weather does not exempt the permittee from having to file a monitoring report in accordance With'the sampling schedule. Adverse events and failures to monitor must also be explained and reported on_the relevant DMR. 2. Allowable Non-Stormwater Discharges, - Non-stormwater discharges which shall be allowed in the stormwater conveyance system include: a. Uncontaminated, groundwater, foundation-drains,, air-conditioner condensate without added chemicals, springs,-discharges of uncontaminated potable water, waterline and fire hydrant flushings,water from footing drains,flows from riparian habitats and wetlands. b. Discharges resulting from fire-fighting or'fire-fighting training,or emergency shower or eye wash as a result of use in the event of an emergency. . L 3. Best-Management Practices(BMPs)_ Measures-or practices used to reduce The amount of pollution entering surface waters. BMPs may take the form of a process,activity,or physical structure. More information on BMPs can be found at: https://www.epa gov/.npdes/national-menu-best-management-practices-bmps-stormwater#edu. 4. Bypass(stormwater) '\ A bypass is the known',diversion of stormwater from any portion of a stormwater control facility including,the collection system,which is not a designed or established operating mode for the facility. 5. Bulk Storage of Liquid Products Liquid raw materials,intermediate products,manufactured products,waste materials,or by-products with a single above ground storage container having a capacity of greater than 660 gallons or with multiple above ground storage containers located in close proximity to each other having a total combined storage capacity of greater than 1,320 gallons. 6. DEMLR The Division of Energy,Mineral,and Land Resources. Page 16 of 27 Permit NC0004308 7. Landfill A disposal facility or part of a disposal facility where waste is placed in or on land and which is not a land treatment facility, a surface impoundment, an injection well, a hazardous waste long-term storage facility or a surface storage facility. 8. Measureable Storm Event A storm event that results in an actual discharge from the permitted site outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour storm interval may not apply if the permittee is able to document that a shorter interval is representative for local storm events during the sampling period,and obtains approval from the local DEMLR Regional Office. Two copies of this information and a written request letter shall be sent to the local DEMLR Regional Office. After authorization by the DEMLR Regional Office, a written approval letter must be kept on site in the permittee's SPPP. 9. No Exposure A condition of no exposure means that all industrial materials and activities are protected by a storm resistant shelter or acceptable storage containers to prevent exposure to,rain, snow, snowmelt, or runoff. Industrial materials or activities include,but are not limited to,material handling equipment or activities,industrial machinery,raw materials,,intermediate products,by-products,final products, or waste products [40 CFR 122.26(b)(14)]. DEMLR may grant a N;Exposure Exclusion from NPDES Stormwater Permitting requirements only if a facility complies with the terms and conditions described in 40 CFR§122.26(g). 10. Point Source Discharge of Stormwater- Any discernible,confined and discrete conveyance including,but not specifically limited to,any pipe, ditch, channel, tunnel, conduit, well, or discre e fissure from which stormwater is or may be • discharged to waters of the state. i 11. Representative Outfall Stains When it is established that the discharge of stormwater runoff from a single outfall is representative of the discharges at multiple outfalls, the Division may grant representative outfall status. Representative outfall status allows the permittee to perform analytical monitoring at a reduced number of outfalls. 12. Secondary Containment Spill containment,for the contents of the single largest tank within the containment structure plus sufficient freeboard'to contain the 25-year,24-hour storm event. 13. Section 313 Water Priority Chemical A chemical or chemical 'category which: a. Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund Amendments and Reauthorization Act(SARA)of 1986,also titled the Emergency Planning and Community Right- to-KnowrAct of 1986; b. Is present at or above threshold levels at a facility subject to SARA title III,Section 313 reporting requirement's;and c. Meets at least one of the following criteria: i. Is listed in appendix D of 40 CFR part 122 on Table II (organic priority pollutants),Table III (certain metals,cyanides,and phenols) or Table IV(certain toxic pollutants and hazardous substances); ii. Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the CWA at 40 CFR 116.4;or iii. Is a pollutant for which EPA has published acute or chronic water quality criteria. Page 17 of 27 Permit NC0004308 14. Significant Materials Includes,but is not limited to:raw materials;fuels;materials such as solvents,detergents,and plastic pellets; finished materials such as metallic products; raw materials used in food processing or production; hazardous substances designated under section 101(14) of CERCLA; any chemical the facility is required to report pursuant to section 313 of Title III of SARA; fertilizers; pesticides; and waste products such as ashes,slag and sludge that have the potential to be released with stormwater discharges. 15. Significant Spills Includes,but is not limited to: releases of oil or hazardous substances in excess of reportable quantities under section 311 of the Clean Water Act (Ref: 40 CFR 110.3and 40 CFR 117.3) or section 102 of CERCLA(Ref:40 CFR 302.4). 16. Stormwater Discharge Outfall(SDO) The point of departure of stormwater from a discernible,confined,or discrete conveyance,including but not limited to,storm sewer pipes,drainage ditches,channels,spillways,or channelized collection areas,from which stormwater flows directly or indirectly into waters of the State of North Carolina. 17. Stormwater Runoff The flow of water which results from precipitation and which occurs immediately following rainfall or as a result of snowmelt. • 18. Stormwater Associated with Industrial Activity The discharge from any point source,which is used for collecting and conveying stormwater and which is directly related to manufacturing, processing or raw material storage areas at an industrial site. Facilities considered to be engaged in"industrial activities"include those activities defined in 40 CFR 122.26(b)(14). The term does not include discharges from facilities or activities excluded from the NPDES program. 19. Stormwater Pollution Prevention Plan A comprehensive site-specific plan which details measures and practices to reduce stormwater pollution and is based on an evaluation of the pollution potential of the site. 20. Total Maximum Daily Load(TMDL) TMDLs are written plans for attaining and maintaining water quality standards,in all seasons, for a specific water body and pollutant. A list of approved TMDLs for the state of North Carolina can be found at http://portal.ncdenr.org/web/wq/ps/mtu/tmdl. 21. Vehicle Maintenance Activity Vehicle rehabilitation,mechanical repairs,painting,fueling,lubrication,vehicle cleaning operations, or airport deicing operations. 22. Visible Sedimentation Solid particulate matter,both mineral and organic,that has been or is being transported by water,air, gravity,or ice from its site of origin which can be seen with the unaided eye. 23. 25-year,24 hour Storm Event The maximum 24-hour precipitation event expected to be equaled or exceeded,on the average, once in 25 years. Page 18 of 27 Permit NC0004308 SECTION C-SPECIAL CONDITIONS C.(1.)ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (Quarterly;Outfall 005) [15A NCAC 02B .0200 et seq.] The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent Concentration" (Revised December 2010 or subsequent versions).The monitoring shall be performed as a Fathead Minnow(Pimephales promelas)24 hour static test. The effluent concentration at which there may be at no time significant acute mortality is 90% (defined as treatment two in the procedure document). The tests will be performed once during each calendar quarter(January-March,April-June,July-September and October-December). 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. Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will begin immediately until such time that a single/test is ,passed. Upon` passing, this monthly test requirement will revert to quarterly in the months specified above. All toxicity testing results required as part of this permit'condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in which it was'performed, using the parameter code TGE6C. Additionally,DWR Form AT-2(original)is to be sent to the following address: Attention: North Carolina Division of Water Resources Aquatic Toxicology Branch,Water Sciences Section 1621 Mail Service Center _ _ Raleigh,North Carolina; 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Aquatic Toxicology Branch no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from'the facility during a month in which toxicity monitoring is required, the 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. Should the permittee fail to monitor during a month in which toxicity monitoring is required,then monthly monitoring will begin immediately until such time that a single test is passed.Upon passing,this monthly test requirement will revert to quarterly in the months specified above.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 either these monitoring requirements 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. Page 19 of 27 Permit NC0004308 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 to achieve test conditions as specified in the cited document, such as minimum control organism survival and appropriate environmental controls,shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. C.(2.) ACUTE TOXICITY MONITORING (Quarterly;Outfalls 011 and 013) [15A NCAC 02B .0200 et seq.] The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined as definitive in E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales promelas) 24-hour static test. Effluent samples for self-monitoring purposes must be obtained during representative effluent discharge below all waste treatment. The tests will be performed on a discharge event during each calendar quarter(January-March,April-June,July-September and October-December). The parameter code for this test is TAE6C.All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Form (MR-1)'for the month in which it was performed, using the appropriate parameter code.Additionally,DWR Form AT-1 (original)is to be sent to the following address: Attention: North Carolina Division of Water Resources Aquatic Toxicology Branch,Water Sciences Section 1621 Mail Service Center Raleigh,North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be'filed with the Aquatic Toxicology Branch no later than 30 days after the end of the reporting period for which,the report is made Test data shall be'complete and accurate and include all supporting chemical/physical measurements performed in association with the tonicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.. - — Should there be no discharge of'flow from the facility during a quarter in which toxicity monitoring is required,the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name,permit number,pipe number,county,and the month/year of the report with the notation of"No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Branch at the address cited above. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Resources indicate potential impacts to the receiving stream, this permit may be re-opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document,such as minimum control organism survival 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 20 of 27 Permit NC0004308 C.(3.) CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT(Quarterly;Outfall 012) [15A NCAC 02B.0200 et seq.] The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 3.8%at Outfall 012. The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998,or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent versions. Effluent samples for self-monitoring purposes must be obtained during representative effluent discharge below all waste treatment. The tests will-be performed once during each calendar quarter(January-March,April-June,July-September and October-December). 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 Chroc Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent versions. The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration having no detectable impairment of reproduction or survival and theIlowest concentration that does have a detectable impairment of reproduction or survival. The definition of"detectable impairment," collection methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent versions. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form(MR-1)for the months in.which tests were performed,using the parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,DWR Form AT-3(original)is to be sent to the following address: \ Attention: North Carolina Division of Water Resource's i Aquatic Toxicology Branch,Water Sciences Section 1621 Mail Service Center Raleigh,North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed'with the Aquatic Toxicology Branch no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete,'accurate, include all supporting chemical/physical measurements and all concentration/response data, and,be certified _by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should'there be no discharge,of flow from the facility during a quarter in which toxicity monitoring is required,the Permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the•facility name,permit number,pipe number,county,and the month/year of the report with the notation of"No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Branch at the address cited above. Should the Permittee fail to monitor during a month in which toxicity monitoring is required,monitoring will be required during the following month. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Resources indicate potential impacts to the receiving stream, this permit may be re-opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall 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 21 of 27 Permit NC0004308 C.(4.) ACUTE TOXICITY MONITORING (Annual;Outfall 019) [15A NCAC 02B .0200 et seq.] The permittee shall conduct annual toxicity tests using protocols defined as definitive in E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead Minnow(Pimephales promelas) 24-hour static test. Effluent samples for self-monitoring purposes must be obtained below all waste treatment. The permittee will conduct one test annually,with the annual period beginning in January of the calendar year of the effective date of the permit. The annual toxicity test must be performed by June 30. Should there be no discharge of flow from the facility during the six month period January 1-June 30,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 in the comments section indicate"No Flow for January 1-June 30, {`calendar year}." The report must be signed and submitted to the Environmental Sciences Section at the address noted'below. If no discharge event occurs from January 1-June 30,yet a,discharge event occurs from July 1-December 31, then the facility must perform toxicity monitoring and report the data as noted below. The parameter code for this test is TAE6C.All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Form (MR-1)`for the month in which it was performed, using the appropriate parameter code.Additionally,DWR Form AT-I (original)is to be sent to the following address: Attention: North Carolina Division of Water Resources Aquatic Toxicology Branch,Water Sciences Section 1621 Mail Seivice Center Raleigh,North,Carblina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Aquatic Toxicology Branch no later than 30 days after the end of the reporting period for which the report is made. Test data shall be'complete and accurate and include all supporting chemical/physical measurements performed in association with the tokicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. - - Should any test data from either these monitoring requirements or tests performed by the North Carolina Division of Water Resources indicate potential-impacts to the receiving stream,this permit may be re-opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document,such as minimum control organism survival and appropriate environmental controls,shall constitute an invalid test and will require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial monitoring. C.(5.) PERMIT REOPENER [G.S. 143-215.1(b)] The permitttee shall notify the Division if any industrial activity is proposed to take place at the facility which changes the characteristics of the wastewaterp as authorized in this permit or adds additional sources of wastewater. A notification shall be submitted to the Division describing the new activities and expected wastewater characteristics 90 days prior to proposed start of operations. Page 22 of 27 Permit NC0004308 C.(6.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS [G.S. 143-215.1(b)] Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program reports.The final NPDES Electronic Reporting Rule was adopted and became effective on December 21,2015. NOTE: This special condition supplements or supersedes the following sections within Part II of this permit (Standard Conditions for NPDES Permits): • Section B. (11.) Signatory Requirements • Section D. (2.) Reporting • Section D. (6.) Records Retention , • Section E. (5.) Monitoring Reports 1. Reporting Requirements[Supersedes Section D. (2.) and Section E. (5.).(a)) The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report(eDMR)internet application. Monitoring results obtained during the previous Month(s) shall be summarized for each month and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. Until such time that the states 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: i NC DEQ/ Division of-Water Resources/ Water,Quality Permitting Section ATTENTION: Central Files • 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 wheie 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 lie 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. See "How to Request a Waiver\from Electronic Reporting' section below. 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. • Starting on December 21, 2020, the permittee must electronically report the following compliance monitoring data and reports,when applicable: • Sewer Overflow/Bypass Event Reports; • Pretreatment Program Annual Reports;and • Clean Water Act(CWA)Section 316(b)Annual Reports. The permittee may seek an electronic reporting waiver from the Division(see"How to Request a Waiver from Electronic Reporting" section below). Page 23 of 27 Permit NC0004308 2. Electronic Submissions In accordance with 40 CFR 122.41(1)(9),the permittee must identify the initial recipient at the time of each electronic submission. The permittee should use the EPA's website resources to identify the initial recipient for the electronic submission. Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity(EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity for receiving electronic NPDES data [see 40 CFR 127.2(b)]. EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each type of electronic submission and for each state. Instructions on how to access and use the appropriate electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-24954/national-pollutant-discharge- elimination-system-npdes-electronic-reporting-rule Electronic submissions must start by the dates listed in the"Reporting Requirements" section above. 3. How to Request a Waiver from Electronic Reporting The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the Division. Requests for temporary electronic reporting waivers 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 submitting monitoring data and reports. The duration of a temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data and reports shall be submitted electronically to the Division unless the permittee re-applies for and is granted a new temporary electronic reporting waiver by the Division. Approved electronic reporting waivers are not transferrable. Only permittees with an approved reporting waiver request may submit monitoring data and reports on paper to the Division for the period that the approved reporting waiver request is effective. Information on eDMR and the application for a temporary electronic reporting waiver are found on the following web page: http://deq.nc.gov/about/divisions/water-resources/edmr 4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)l All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting purposes. For eDMR submissions,the person signing and submitting the DMR must obtain an eDMR user account and login credentials to access the eDMR system. For more information on North Carolina's eDMR system,registering for eDMR and obtaining an eDMR user account,please visit the following web page: http://deq.nc.gov/about/divisions/water-resources/edmr Page 24 of 27 Permit NC0004308 Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED: "I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." 5. Records Retention[Supplements Section D.(6.)1 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]. C.(7.) MIXING ZONE (Outfall 012) (a.) The mixing zone for outfall 012 consists of a circular area with a radius of 5.6 m from the diffuser. (b.) Instream Sampling shall be collected as follows: PARAMETER MONITORING REQUIREMENTS Measurement Sample 1 Frequency Type Sample Location pH Monthly Grab MZ1,MZ2,MZ3 Total Cyanide Monthly Grab MZ1,MZ2,MZ3 Total Fluoride Monthly Grab MZ1,MZ2,MZ3 Trichloroethylene(TCE) Monthly Grab MZ1,MZ2,MZ3 Footnote: 1. MZ1 - Lake Badin 20 feet from the diffuser on a parallel line projected from the diffuser. MZ2-Lake Badin 20 feet from the diffuser on a perpendicular line projected from the diffuser(oriented SE). MZ3 - Lake Badin 20 feet from the diffuser on a perpendicular line projected from the diffuser (oriented NW). For each instream sampling location, samples must be collected at the surface and at depth of approximately 3.5 meters. (c.) Sampling results shall be reported in the DMRs.See special condition C.(6.) Page 25 of 27 Permit NC0004308 011( , „,...., , ,,, ,,,,_,.•,_, ,,,,,,„ , cpil,,,. / , ; ,�, �� c ' • Badin ake \\\\:‘ ,.- 1 -_(// 4//lag 4 % ,,,,i , „,.. .) , 6 iJ I / � 5L1- .i( hyo, ` • fir S %. .-J)l;1. r ' J'/ j/fir , i Outfall 01 . ; �I \ Outfall 019 // ,, 1 i _(L► -, •1 ` 14 '\�''\ ti / .- Outfall 012 = de 'S,',`;i l!1{ (( ` S r54-,9_,,e.•.f::' 1y:::)•:•l'•.'' Yad' l k' , ' /fJ , 1 •`!J_.`V Outfall 011 ,'//,__\. _,, !!1'V,`"\\,` '/-\\\`,:\\ /1r1. i \ 44,-.'. '';.:•:;•' .t4e.,-„,q‘k / -,-- // / 1 ,1 ip 022 ''.�` (` / �'•• Outfall 020 /r Il 1 ! /, r'- \ ;., ` 1. ,z, 7 �.•': ` `� • _ 4\�\\1Rll\�. ;':'2"•. t ,i t )`i \t- :'�I\ p r Outfall l 002 - '1; -:1 :ritI�' —,�,4: I f '0 { �GJ 4 ` ► 4 \ /1/I B di �`b - _� ,a �1`;'JI;I`(i/ )I;.',,.,,� f;� C, .' ' ' `'.'f tryy�/ , 50� n' �13'•,. 1i-:•" `: lilli 1�';;'!/;ll�� .��,1?r'il ? 5 SII8 ��m 4 ! #,.."....._// ,/,//..../..,.. . 4,,,\,`•\1_/".„,-, ,-• a /, •�1 'fir „ �� -:!)I I 4p-v; I / i .r.Wil 4 ,, / \) rt: S� \ �,, Outfall 004 - /,? _�' i'/ r. ( ti\.`',:-.UGr, '' 11 ,-:.. Outfall 005 i ,/ , �(� .� ..�_�, , Outfall 018 �' , .r / �� , } r 1. �� �1� �� �•�,r�i t ��{i ! i% �1 I � f •/ r� `\�1��� �'�II��) �•J�I�f l I�\���: 2 6 . ///9 ,\,. ) `� \� Outfall017 / I I It !, ` 4 �� • , i ?•'IP.f 11 I /J f6/Nh3lr.'.�!}//! 1 1' r '�''. ` \\11` / Outfall 022 '+ +' jiff, //,1C',Vaitr'Ill i;% {t 1 / +.!=f�\~,.\\\\\��, �-'r • \ \• •V � h '. • U !11 �1�f/�;�J/ i I I,.J \\\ 1;`1'/Y.� \ \. mil N t! • . j \\V'1 �!' •I I} rlr ,\. !i/_ /1 1 Iy t N r�_I\ � , k,‘\ vsli o t�1.hr, /'.. : , I _l : Ir'1% .\ \ \,\ •�`,.. ,.=�j} r^1\��..� ^\\ `i\ l:_= /`/ - .:/., rib44iiff 10'\rNI) i k In ' \ 1 k: r/i/..-- ,\\:. \----//'---:_;?..--\\--,:::::-;;;.?../f., i `. .----:. f"e<,:' : iy/ II:ow,'-- ,,,.?,irs 4 1,\ , . . I, ;:;,' i ofr" , I N --)/ \s-il \‘s. /,-\'-' . i itl, \‘[r----„ ` 1\ j_ ._1 ' �;�;'`\; ,� { �\\ -v,1 ,r-///`•—'il'i{� �.�%III I�j' r\' ;,,i`rq , ft.. ...0,, �: \1 \�\`: �• fir;--' '�, i{({ 1 �, , .."",,,I;„:".v/frfkio\vitio ) ) I(. ,..,.._ r .4. .., "-:::---_::::•"--' Of i , \_/-11\,\‘,, till ti\'\gtitii)) :.. , ; 1_\� . L• \ � f i 14 1I 6,': Ail'Af leit , 2 i 1 s (r 7--; I\ .'((`‘f N('' i'';‘\'/:-/'.': '"C11/-;:i 7(::.'---,:\l‘L\I:, � i:4iiiiii.„ ..::_-:-,.z.,z,,,,.. :lit-14 ....A 1 •\s., --1::-C JN77 (� jj C;),(froillii ,\1 I , , 4 �.1 11,'''? .,1 ,..\\, ///,'I' I II 1.....) ,,; r Badin Business Park — Stanly County Location Map Receiving Stream: Badin Lake(Yadkin River)and UT to Little Mountain Creek Stream Classification: WS-IV CA&B and WS-IV 1�T T River Basin: Yadkin/Pee Dee j V Sub-Basin #: 03-07-08 USGS Quad #: F18NE,F18NW Badin&New London, NC NPDES Permit No. NC0004308 Page 26 of 27 Permit NC0004308 Table 1.Outfall Locations Outfall Latitude Longitude 002 35°24' 29.89" 80°6' 54.48" 004 35°24' 11.58" 80° 7' 11.38" 005 35° 24' 9.25" 80° 7' 14.73" 011 35°24' 42.59" 80° 6' 53.49" 012 35°24' 43.13" 80° 6' 50.04" 013 35°24' 50.78" 80°6' 59.26" 017 35° 24' 9.04" 80° 7' 14.75" 018 35°24' 12.64" 80° 7' 34.48" 019 35° 24' 46.88" 80° 6' 16.53" 020 35°24' 31.45" 80° 6' 57.02" 022 35°24' 7.45" 80° 7' 23.99" Page 27 of 27