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Home My WebLink AboutNC0031046_Draft Permit_20220208ROY COOPER Governor ELIZABETH S. BISER Secretary S. DANIEL SMITH NORTH CAROLINA Director Environmental Quality February 8, 2022 Brian Smith, Operations Manager Colonial Pipeline Company 411 Gallimore Dairy Rd Greensboro, NC 27409-9726 Subject: Draft NPDES Permit NC0031046 Colonial Pipeline Company — Greensboro Junction Grade I Physical Chemical WPCS Guilford County Dear Mr. Smith: The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure a thorough understanding of the information, conditions, and requirements it contains. The draft permit includes the following significant changes from the existing permit: 1. The facility classification Grade I Physical Chemical Water Pollution Control System (WPCS) was added to the effluent page. 2. The following limits have been removed based a reasonable potential analysis (RPA) of DMR data: a. Outfall 001: Total Recoverable Phenolics b. Outfall 003: Total Recoverable Phenolics and Benzene c. Outfall 004: Total Recoverable Phenolics, Benzene and Toluene d. Outfall 005: Total Recoverable Phenolics and Benzene. 3. The Turbidity limits and footnote were removed from the effluent tables for Outfalls 001, 002, 003, 004, and 005. The Turbidity water quality standard will be maintained in the permit as a narrative condition for instream monitoring. See Condition A. (6.). 4. The practical quantitation limits (PQL) footnote was removed. This requirement is covered by a condition in NPDES Standard Conditions Part II. Section D. (4.). 5. Concurrent sampling with WET testing is no longer required. 6. The Acute WET test condition was updated. See Condition A. (9.). 7. The electronic reporting permit special condition A. (10.) was updated. Footnote 1 for electronic reporting was updated for Conditions A. (1.) through A. (6.). Please note that East Fork Deep River is listed as an impaired waterbody on the North Carolina 303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream impairment can be attributed to your facility, then mitigative measures may be required. NORTH CAROLINA Department of Environmental Quality North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617 919.707.9000 The NPDES standard conditions (Parts II, III, and IV) 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. With this notification, the Division will solicit public comment on this draft permit by publishing a notice in newspapers having circulation in the general Guilford County area, per EPA requirements. Please provide your comments, if any, to me at the address below no later than 30 days after receiving 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 the draft, please contact me at 919-707-3618, or via e-mail at derek.denard@ncdenr.gov. Sincerely, Derek Denard, Environmental Specialist NPDES Compliance and Expedited Permitting Division of Water Resources, NCDEQ ec: NPDES File [Laserfiche] Colonial Pipeline Company / Brian Smith [bsmith@colpipe.com]; Maribeth Hughes [mhughes@colpipe.com]; Jerad S. Tate [jstate@colpipe.com]; John M. Wyatt [jmwyatt@colpipe.com] S&ME / Claudia B. Ivin [cirvin@smeinc.com] WSRO / Jenny Graznak [jenny.graznak@ncdenr.gov]; Lon Snider [lon.snider@ncdenr.gov] WSS/Aquatic Toxicology Branch / Zach Thomas [zachary.thomas@ncdenr.gov]; Cindy Moore [cindy.a.moore@,ncdenr.gov] PWS/WSRO / Eric Hudson [eric.hudson@ncdenr.gov] Wastewater Operator Certification Group [Maureen.Kinney@ncdenr.gov] NPDES Permit NC0031046 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY DIVISION OF WATER RESOURCES PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE EIJ VATION SYSTEM (NPDES) In compliance with the provisions of North Carolina Genera to 143-215.1, other lawful standards and regulations promulgated and ad ted by the No arolina Environmental Management Commission, and the Feder r Pollution C.. Act, as amended, Colonial Pipeline Company is hereby authorized to discharge wastewater from outfalls located at the Colonial Pipeline p ny — Greensboro Junction 411 GallimoreCairy ad, ree boro, NC 27409 i Guilford unt to receiving waters designated as an unnamed tribut Cape Fear River Basin in accordance with effluent li conditi ns set forth in Parts I, II, III and IV hereof iiii This permit shall become effective This permit and authorization to arge shall expire at midnight on August 31, 2026. UT) of East Fork Deep River within the ions, monitoring requirements, and other Signed this day S. Daniel Smith, Director Division of Water Resources By Authority of the Environmental Management Page 1 of 13 NPDES Permit NC0031046 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. Colonial Pipeline Company is hereby authorized to: 1. continue to operate an existing Surface -Watt Pollution Prevention S slab wash -down water, calibration water [Prover - water in proximity to above -ground storage tank bulk -storage of petroleum hydroc. .n fuels • diked areas, (secondary -con • diked areas (secondary-contai remediation land -farming, grave • ponds, oil/water separ rs • control valves, hand-o no opTM or similar], an Ts) and appurtenant s one (1) million gallons, to treat stormwater, ostatic tank -testing where surface ing; urce discharge) located at the Coloniapeline Company, 411 limore Dairy Road, Greensboro, Guilford County, i • 6 areas of activity specified as Area 1 2 3 4 5 6 and, Activity Supported by Size Secondary Containment (Acres) Fuel Oil Tank Area / Kerosene and Jet Fuel Area 22.2 Fuel Oil Tank -Manifold Area 7.4 Pu ea Gaso Utility Tanks / Gas Manifold Area Meter-0 ea Oily -Waste Landfill / Meter -In Area 2.2 35.9 1.6 13.3 Oil / Water Separator 2 1 1 1 1 1 Outfall 001 002 003 004 004 005 2. discharge from said treatment works via Outfalls 001 through 005, at locations specified on the attached map, into an unnamed tributary (UT) to the East Fork Deep River [Stream Segment 17-2-(0.3)], a waterbody currently classified WS-IV:* within Subbasin 03-06-08 [HUC: 030300030102] of the Cape Fear River Basin. Page 2 of 13 NPDES Permit NC0031046 PART I A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — Outfall 001 [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302] Beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated stormwater from Outfall 001. Such discharges shall be limited, monitored and reuortedl by the Permittee as suecified below: EFFLUENT CHARACTERISTICS [PARAMETER CODES] LIMITS MONITORING REQUIREMENTSI Monthly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow (MGD) 2 50050 Monitor & Report Episodic 2 Effluent Total Suspended Solids (TSS) (mg/L) C0530 30.0 mg/L 45.0 mg/L Monthly Grab Effluent Turbidity (NTU) 00070 Monitor & Report Mont y Grab Effluent Total Recoverable Phenolics (µg/L) 32730 Monitor & Report Mon Grab Effluent Oil & Grease (mg/L) 3 EPA Method 1664 [SGT-HEM] 00556 Monitor & Report Monthly Grab Effluent Naphthalene (µg/L) 34696 Monitor & Report Monthly krab Effluent Benzene (µg/L) 34030 .Monitor & Report Quarterly Grab Effluent Toluene (µg/L) 34010 Monitor & Report Quarterly Grab Effluent Ethyl Benzene (µg/L) 34371'1 Monitor &ieport Quarterly Grab Effluent Xylene (µg/L) 81551 Monitor & Report arterly Grab Effluent MTBE (µg/L) 2417 Monitor & Report Quarterly Grab Effluent Acute WET Testing 4 E6C See Footnote 4 Annually 4 Grab Effluent Footnotes: 1. The Permittee shall submit Dischar system. See Condition (10.). 2. Eadh discharge event s 11 be monitored for Flow tme and duration — During periods of no flow, the Permittee shall submit a signed, monthly Disch onitoring Report (DMR) indicating "No discharge." Flow may be documented using any one of the follo ur (4) methods: 1) measure flow continuously via we flow meter (totalizer preferred); 2) estimate flow at 20-minute intervals during the entire discharge event; 3) report flow based on discharge pump logs; or 4) calculate flow used op total rainfall per unit area draining to the outfall using the Rational Method [see formula, Section A. (7.)]., 3. Where possible, the grab sire for Oil & Grease should be skimmed from the water surface of a quiescent (calm water) zone. 4. If Acute WET -test fails [TGE6C], the Permittee shall test each subsequent discharge event until testing indicates "pass," after which Quarterly monitoring shall resume in accord with Section A. (9.). If after a subsequent five (5) consecutive Quarterly events, WET results demonstrate no toxicity (i.e., "pass"), the Permittee may petition the Division to relax monitoring, as data may warrant. Reports electronically using NC DWR's eDMR application Conditions: • The Permittee shall discharge no floating solids or foam. • Direct discharge of tank solids, tank -bottom water, or the rag layer is not permitted. • Hydrostatic Tank Testing: The Permittee shall discharge no tank solids, no tank bottom -water, no tank rag -layer; no tank [or pipe] contents, unless Benzene concentration tests less than 1.19 µg/L and Toluene concentration tests less than 11 µg/L. Page 3 of 13 NPDES Permit NC0031046 A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — Outfall 002 [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302] Beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated stormwater from Outfall 002. Such discharges shall be limited, monitored and reported' by the Permittee as specified below: EFFLUENT CHARACTERISTICS [PARAMETER CODES] LIMITS MONITORING REQUIREMENTS1 Monthly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow (MGD) 2 50050 Monitor & Report Episodic 2 Effluent Total Suspended Solids (TSS) (mg/L) C0530 30.0 mg/L 45.0 mg/L onthly Grab Effluent Turbidity (NTU) 00070 Monitor & Report hly Grab Effluent Oil & Grease (mg/L) 3 EPA Method 1664 [SGT-HEM] 00556 Monitor & Report Monthly Grab Effluent Naphthalene (µg/L) 34696 Moni Report ik Month1y Grab Effluent Total Recoverable Phenolics (µg/L) 3 730 Monitor Report Monthly *rub Effluent Benzene (µg/L) 030 Monitor & Report 1%111iitor Quarterly Grab Effluent Toluene (µg/L) 34010 & Report Quarterly Grab Effluent Ethyl Benzene (µg/L) 34371 Monitor & Report Quarterly Grab Effluent Xylene (µg/L) 815511 Monitor & Report arterly Grab Effluent MTBE (µg/L) 22417 Monitor & Report arterly Grab Effluent Acute WET Testing 4 LE6C See Footnote 4 Annually 4 Grab Effluent Footnotes: 1. The Permittee shall submit Discharge Monitori system. See Condition A. (10.). 2. Eah discharge event shall be mon,}tored for Floe and duration — During periods of no flow, the Permittee shall submit a signed, monthly Discharge Monitoring eport (DMR) indicating "No discharge." Flow may be documented using any one of the following four (4) methods: 5) measure flow continiy via weir or flow meter (totalizer preferred); 6) estimate flow at 20-minute intervalsluring the entire discharge event; 7) report flow based on discharge pump logs; or 8) calculate flow based on total rainfall per unit area draining to the outfall using the Rational Method [see formula, Section A. (7.)]. 3. Where possible, the grab sample for Oil & Grease should be skimmed from the water surface of a quiescent (calm water) zone. 4. If Acute WET -test fails [TGE6C], the Permittee shall test each subsequent discharge event until testing indicates "pass," after which Quarterly monitoring shall resume in accord with Section A. (9.). If after a subsequent five (5) consecutive Quarterly events, WET results demonstrate no toxicity (i.e., "pass"), the Permittee may petition the Division to relax monitoring, as data may warrant. electronically using NC DWR's eDMR application Conditions: • The Permittee shall discharge no floating solids or foam. • Direct discharge of tank solids, tank -bottom water, or the rag layer is not permitted. • Hydrostatic Tank Testing: The Permittee shall discharge no tank solids, no tank bottom -water, no tank rag -layer; no tank [or pipe] contents, unless Benzene concentration tests less than 1.19 µg/L and Toluene concentration tests less than 11 µg/L. Page 4 of 13 NPDES Permit NC0031046 A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — Outfall 003 [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302] Beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated stormwater from Outfall 003. Such discharges shall be limited, monitored and reported' by the Permittee as specified below: EFFLUENT CHARACTERISTICS [PARAMETER CODES] LIMITS MONITORING REQUIREMENTSI Monthly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow (MGD) 2 50050 Monitor & Re , Episodic 2 Effluent Total Suspended Solids (TSS) (mg/L) C0530 30.0 mg/L i ! . Monthly Grab Effluent Turbidity (NTU) 00070 Monit ' •ort i onthly Grab Effluent Total Recoverable Phenolics (µg/L) 32730 M Report ly Grab Effluent Benzene (µg/L) 34030 onitor & Report Mo I thly Grab Effluent Oil & Grease (mg/L) 3 EPA Method 1664 [SGT-HEM] 00556 Monitor & Report Monthly Grab Effluent Naphthalene (µg/L) 34696 lir Monitor Report Monthly Iliprab Effluent Toluene (µg/L) 34010 Monitor & Report Monthly Grab Effluent Ethyl Benzene (µg/L) 34371 11101konitor & Report Quarterly Grab Effluent Xylene (µg/L) 81551 Mon* Monit Report Quarterly Grab Effluent MTBE (µg/L) 22417 Monito Report arterly Grab Effluent Acute WET Testing 4 AP TGE6C 'See Footnote 4 nually 4 Grab Effluent Footnotes: 1. The Permittee shall sub system. See Condition A. 2. Each discharge event s1ta11 be monitored for Flow volum nd duration — During periods of no flow, the Permittee shll submit a signed, monthly Discharge Monitoring feport (DMR) indicating "No discharge." Flow may be doc ented using any one of the following four (4) methods: 9) measure flow continuously via wei or flow meter (totalizer preferred); 10) estimate flow at 20- e inte ng the entire discharge event; 11) report flow based on discharge p ogs; or 12) calculate flow based on total rainfall per unit area draining to the outfall using the Rational Method [see formula, Section A. (7.)]. 3. Where possible, the grab sample for Oil & Grease should be skimmed from the water surface of a quiescent (calm water) zone. 4. If Acute WET -test fails [TGE6C], the Permittee shall test each subsequent discharge event until testing indicates "pass," after which Quarterly monitoring shall resume in accord with Section A. (9.). If after a subsequent five (5) consecutive Quarterly events, WET results demonstrate no toxicity (i.e., "pass"), the Permittee may petition the Division to relax monitoring, as data may warrant. itoring s electronically using NC DWR's eDMR application Conditions: • The Permittee shall discharge no floating solids or foam. • Direct discharge of tank solids, tank -bottom water, or the rag layer is not permitted. • Hydrostatic Tank Testing: The Permittee shall discharge no tank solids, no tank bottom -water, no tank rag -layer; no tank [or pipe] contents, unless Benzene concentration tests less than 1.19 µg/L and Toluene concentration tests less than 11 µg/L. Page 5 of 13 NPDES Permit NC0031046 A. (4.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — Outfall 004 [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302] Beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated stormwater from Outfall 004. Such discharges shall be limited, monitored and reported' by the Permittee as specified below: EFFLUENT CHARACTERISTICS [PARAMETER CODES] LIMITS MONITORING REQUIREMENTSI Monthly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow (MGD) 2 50050 Monitor & Re , Episodic 2 Effluent Total Suspended Solids (TSS) (mg/L) C0530 30.0 mg/L i - Monthly Grab Effluent Turbidity (NTU) 00070 Monit ' •ort klonthly Grab Effluent Total Recoverable Phenolics (µg/L) 32730 M Report Monthly Grab Effluent Benzene (µg/L) 34030 Monitor & Report Monthly Grab Effluent Toluene (µg/L) 34010 Monitor & Report Monthlm Grab Effluent MTBE (µg/L) 22417 19.0 µg/ 9.0 µA, Monthly I Effluent Oil & Grease (mg/L) 3 EPA Method 1664 [SGT-HEM] 00556 Monitor & Report Monthly ,Grab Grab Effluent Naphthalene (µg/L) 34 Monitor & Report Monthly Grab Effluent Ethyl Benzene (µg/L) 3437 Monitor & Report Quarterly Grab Effluent Xylene (µg/L) 81551 Monitor & Report Itharterly Grab Effluent Acute WET Testing 4 TGE6C See Footnote 4 Annually 4 Grab Effluent 1 Footnotes: 1. The Permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See Condition A. (10.). 2. Each discharge event shall be monitored for Flow volumOand duration — During periods of no flow, the Permittee shall submit a signed, monthly Discharge Monitoring Report (DMR) indicating "No discharge." Flow may l documented using any one of the following four (4) methods: 1) measure flow continuously via r flow meter (totalizer preferred); 2) estimate flow at 20-minute interv•ng the entire discharge event; 3) report flow based on discharge pump logs; or 4) calculate flow based on total rainfall per unit area draining to the outfall using the Rational Method [see formula, Secti A. (7. ]. 3. Where possible, the g ample Apr Oil & Grease should be skimmed from the water surface of a quiescent (calm water) zone. I 4. If Acute WET -test fails [TGE6C], the Permittee shall test each subsequent discharge event until testing indicates "pass," after which Quarterly monitoring shall resume in accord with Section A. (9.). If after a subsequent five (5) consecutive Quarterly events, WET results demonstrate no toxicity (i.e., "pass"), the Permittee may petition the Division to relax monitoring, as data may warrant. Conditions: • The Permittee shall discharge no floating solids or foam. • Direct discharge of tank solids, tank -bottom water, or the rag layer is not permitted. • Hydrostatic Tank Testing: The Permittee shall discharge no tank solids, no tank bottom -water, no tank rag -layer; no tank [or pipe] contents, unless Benzene concentration tests less than 1.19 µg/L and Toluene concentration tests less than 11 µg/L. Page 6 of 13 NPDES Permit NC0031046 A. (5.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS — Outfall 005 [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302] Beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge treated stormwater from Outfall 005. Such discharges shall be limited, monitored and reported' by the Permittee as specified below: EFFLUENT CHARACTERISTICS [PARAMETER CODES] LIMITS MONITORING REQUIREMENTSI Monthly Average Daily Maximum Measurement Frequency Sample Type Sample Location Flow (MGD) 2 50050 Monitor & Report Episodic 2 Effluent Total Suspended Solids (TSS) (mg/L) C0530 30.0 mg/L mg/ Monthly Grab Effluent Turbidity (NTU) 00070 Monit ort onthly Grab Effluent Total Recoverable Phenolics (µg/L) 32730 Monitor Report ly Grab Effluent Benzene (µg/L) 34030 Monitor & Report Monthly Grab Effluent Oil & Grease (mg/L) 3 EPA Method 1664 [SGT-HEM] 00556 Monitor & Report AL Monthly Grab Effluent Naphthalene (µg/L) 34696 Monitor Report Monthly brab Effluent Toluene (µg/L) 34010 Monitor & Report Quarterly Grab Effluent Ethyl Benzene (µg/L) 34371 Monitor & Report Quarterly Grab Effluent Xylene (µg/L) 81551,uMonitor & Report Quarterly Grab Effluent MTBE (µg/L) 22417 1 Monitor& Report arterly Grab Effluent Acute WET Testing 4 AP TGE6C Wee Footnote 4 A nually 4 Grab Effluent Footnotes: 1. The Permittee shall submit Discharge 1Viitoring Rests electronically using NC DWR's eDMR application system. See Condition A. (10.). 2. Each discharge event shall be monitored fo ohiitnd duration — During periods of no flow, the Pequittee shall submit a signed, monily Disch tutoring Report (DMR) indicating "No discharge." Flow majr be ocumented using any one o e following ur (4) methods: 1) sure flow continuously via wei or flow meter (totalizer preferred); 2) e to flow at 20- e inte *rig the entire discharge event; 3) report flow based on d charge p ogs; or 4) calculate flow based on total rainfall per unit area draining to the outfall using the Rational Method [see formula, Section A. (7.)]. 3. Where possible, the grab sample for Oil & Grease should be skimmed from the water surface of a quiescent (calm water) zone. 4. If Acute WET -test fails [TGE6C], the Permittee shall test each subsequent discharge event until testing indicates "pass," after which Quarterly monitoring shall resume in accord with Section A. (9.). If after a subsequent five (5) consecutive Quarterly events, WET results demonstrate no toxicity (i.e., "pass"), the Permittee may petition the Division to relax monitoring, as data may warrant. Conditions: • The Permittee shall discharge no floating solids or foam. • Direct discharge of tank solids, tank -bottom water, or the rag layer is not permitted. • Hydrostatic Tank Testing: The Permittee shall discharge no tank solids, no tank bottom -water, no tank rag -layer; no tank [or pipe] contents, unless Benzene concentration tests less than 1.19 µg/L and Toluene concentration tests less than 11 µg/L. Page 7 of 13 NPDES Permit NC0031046 A. (6.) RECEIVING STREAM - SAMPLING AND MONITORING REQUIREMENTS — Outfall 006 [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302] Beginning on the effective date of the permit and lasting until expiration, the Permittee shall collect instream samples from Outfall 006 and provide analyses as needed to evaluate potential impact to local Waters of the State in proximity to the existing Water Pollution Prevention System. Such instream sampling shall be monitored and reported' by the Permittee, as specified below. EFFLUENT CHARACTERISTICS [PARAMETER CODES] 1 MONITORING REQUIREMENTS Measurement Frequency Sample Type Sample Location 2 Total Suspended Solids (TSS) (mg/L) C0530 Monthly 3 Nab U, D Oil & Grease 4 (mg/L) EPA Method 1664 [SGT-HEM] 00556 Monthly 3 Grab U, D Turbidity (NTU) 5 00070 Monthly 3 Grab U, D Total Recoverable Phenolics (µg/L) 32730 Monthly 3 F. Grab U, D Benzene (µg/L) 34030 Quarterly 3 , Grab U, D Toluene (µg/L) 3)010 Quarterly 3 Grab U, D Ethyl Benzene (µg/L) 34371 Quarterly 3 !ILGrab U, D Xylene (µg/L) 815511 Quarterly Grab U, D MTBE (µg/L) AB 22417 Quarterly_ Grab U, D Footnotes: 1. The Permittee shall sub ischarge Monitoring Reports electronically using NC DWR's eDMR applicatiop system. See • dition A. (10.). 2. Sample Location: U = Upstream; of the infnt pipe to t settling Pond located within the unnamed tributary (UT) to East Fork Deep River (see Site Map), as may be adjusted for sampling safety and access, bu a minimum of 75 feet upstream. = Downstream; immediately downstream of the UT Pond (formerly Outfall 006). 3. Months wherein no discharge occurs shreported as "No flow" or "No discharge" on monthly Discharge Monitoring Report (DMR). 4. Where possible, the grab sample for Oil & Grease should be skimmed from the water surface of a quiescent (calm water) zone. 5. Turbidity — Effluent turbidity shall not cause receiving -stream turbidity to exceed 50 NTU. If background turbidity naturally exceeds 50 NTJ, the effluent shall not cause background turbidity to increase. Any discharge exceeding this permit limit will require sufficient instream sampling (upstream and/or downstream) to verify compliance (effluent vs. background). [NCAC 02B. 0211(21)] Page 8 of 13 NPDES Permit NC0031046 A. (7.) FLOW MEASUREMENT RATIONAL [G.S. 143-215.1(b)] The Rational Method - Determination of Peak Runoff: [REF: FHWA Urban Drainage Design Manual, 3.2.2. Rational Method (3-1)] Q=KuCIA, where: Q = Ku = flow (peak flow rate in cfs or m3/sec) unit conversation factor = 1.008 for U.S. st ignored because it is so close to 1), or 0.2 C = dimensionless runoff coefficient forth the ratio of runoff to rainfall I intensity of rainfall [taken from the intsity-dur.. equency curves for the specified design return period at the t concentration, tc (in/h or mF/h). tc = time of concentrtime after beginning rainfall excess when all portions of the drainag- are contributing simultaneously to outlet flow). A = area of tributary w tershed (acres or it The rational equation is used to lculate the runoff fr • the runoff coefficient (accounts for infiltration • the rainfall intensity to the region, • the time off to travel fro the • the r e area. its (usually etric units d, loosely defined as gion, given: in the region), to its outlet, and A. (8.) PRODUCTION MODIFICA' O 0 TREATMENT SYSTEM DISPOSAL SYSTEM G.S. In the e Cover She days follow' e Permittee modifies its e Permittee shall provide p or completion pf such Send notice to bo ent or dispZal system, as described in this permit (see Supplement to notification to the Division of Water Resources no later than 30 jfications, whichever is earlier. NC DEQ/ Division of Water Resources Water Quality Permitting Section - NPDES 1617 Mail Service Center Raleigh, North Carolina 27699-1617 NC DEQ Winston Salem Regional Office DWR/ Water Quality Regional Operations Section 450 Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 The notification shall provide a detailed description of changes to the treatment or disposal systems, including changes in size, capacity, process, physical location, or other information relevant to the design and configuration of the systems or their unit components. It is not necessary to report the routine replacement of a component with one of similar or equivalent capacity. Page 9 of 13 NPDES Permit NC0031046 A. (9.) ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (QUARTERLY) [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 during the months of January, April, July, and October. These months signify the first month of each three-month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during representative effluent discharge and shall be ormed at tII DES permitted final effluent discharge below all treatment processes. Should any single quarterly monitoring indicate a failure to meet specifie 'mits, then monthly monitoring will begin immediately until such time that a single test is passe . on passing, this monthly test requirement will revert to quarterly in the months specified abo All toxicity testing results required as part of this permit condition will be entered electronically using the Division's eDMR system for the month in whi it was performed, using the parameter code e sent to th following address: TGE6C. Additionally, DWR Form AT-2 North Caro on of W Water Sciences Se n/Aquatic •gy Br 1621 Mail Service Center Raleigh, NC 27�699-1621 Or, results can be nt to the emaaill,, ATForms.ATBgnc nr.gov. Completed Aquatic Toxicity Test Fo hall be filed with the Water Sciences Section no later than 30 days after the end of the repo r ing p or which the report is made. Test data shall be complete, acc concentration/response data, and designate signature. , include all supporting chemical/physical measurements and all ertified by laboratory supervisor and ORC or approved 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 Water 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 Page 10 of 13 NPDES Permit NC0031046 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. NOTE: Failure to achieve test conditions as specified in the cited ument, such as minimum control organism survival and appropriate environmental contr all constitute an invalid test and will require immediate follow-up testing to be completed n an the last day of the month following the month of the initial monitoring. A. (10.) ELECTRONIC REPORTING OD SCIIXRGE MO RING 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 wasdopted and became effective on December 21, 2015. Ai NOTE: This special condition su i ements o upersedes the following sections within Part II of this permit (Standard Co itions for ' . S Perini • Section B. (11.) Signatory Rirements • Sec • Reporting • Section Records Retention • Section E. (5.) Monitoring Reports 1. Rep i • Requirements 1Superse ction D. (2.) and Section E. (5.) (a)1 The permitt- .11 report discharge monitoring data electronically using the NC DWR's Electronic Dis ' e Monitoring Report (eDMR) internet application. Monitoring results o :- . 'ng the previous month(s) shall be summarized for each month and submitted electron . sing eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit DMRs electronically using the internet. The eDMR system may be accessed at: https://deq.nc.gov/about/divisions/water-resources/edmr. 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 following address: NC DEQ / Division of Water Resources / Water Quality Permitting Section Page 11 of 13 NPDES Permit NC0031046 ATTENTION: Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 See "How to Request a Waiver from Electronic Reporting" section below. Monitoring results obtained during the previous month(s) shall be summarized for each month and reported via the eDMR system no later than the last calendar day of the month following the completed reporting period. Regardless of the submission m , the first DMR is due on the last day of the month following the issuance of the permit e case of a new facility, on the last day of the month following the commencement of d. Starting on December 21, 2025, 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 electr c reporting waiver from the Division (see "How to Request a Waiver from Electronic Reporting" section below). 2. Electronic Submi In accordance with 40 CFR 1 (1)(9), th - -e mu tify the initial recipient at the time of each electronic submissi The pe should use i e EPA's website resources to identify the initial recipient for lectronic s ► ' ission. Initial recipient of electronic NPDES in rmation fro a NPDES-regulated facilities means the enl4ty (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 v.lso 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 Page 12 of 13 NPDES Permit NC0031046 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 Sectio All eDMRs submitted to the permit issuing II, Section B. (11.)(a) or by a duly authorize Section B. (11.)(b). A person, and not a posit' eDMR reporting purposes. 1.) (b) and sedes Section B. (11.) (d)1 ty shall be signed ► • erson described in Part esentative of that persdescribed in Part II, st be d '.ated signa . authority for For eDMR submissions, the person signing and submi account and login credentials to access the eDMR system. Carolina's eDMR system, registering for eDMR and obtain' visit the following we http://deq.nc.gov/ab /water-resources/edtnr e DMR must obtain an eDMR user more information on North eDMR user account, please Certification. Any peson submitting an electr DMR using the state's eDMR system shall make the following certification [40 CFR 122.2 0 OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPT "I certify, under penalty of law* this docume t and all attachments were prepared under my direction or supervision i cordance with a system designed to assure that qualified personnel properly gather and evalu the informon submitted. Based on my inquiry of the person or persons who manage the sys m, 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 thlxt there are significant penalties for submitting false information, including the possibility of fins 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]. Page 13 of 13 5 II r , downstream p 4 * 44f �i . ie rt,4 pp_ to y !f �; -*-- - vv.-, I # 4.4 p Op iti ' i.or 411# # o 4, 44*-44: , 44.* M W w`li featt-- ...-417r. 7` .�dr '�� Ir +►.rsrr— S v. . *Pr' 44. a walIrt 7 :4;71N11111.1'ram .i f� Al Pi UT to East Fork Deep River [flows southwest] Colonial Pipeline Company Greensboro Junction NPDES Permit NC0031046 411 Gallimore Dairy Road, Greensboro, NC 27409 Receiving Stream: UT to East Fork Deep River Stream Segment: 17-2-(03) River Basin: Cape Fear County: Guilford Stream Class: WS-IV:* Sub -Basin #: 03-06-08 HUC: 030300030102 Outfall 001 36.070175,-79.935383 Outfall 002 36.068673,-79.936259 Outfall 003 36.070616,-79.935901 Outfall 004 36.069896,-79.938037 Outfall 005 36.067186,-79.939443 Upstream 36.071322,-79.934744 _ [Downstream 36.066757,-79.938034 :74 lira W.'..:Witi4116..Wi. ./4 NC Grid/USGS Quad: C19SW / Guilford, NC