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Home My WebLink AboutNCG120038_DMR_MAY_20200608I DocuSign Envelope ID: 69EF9805-4707-46DO-AOBB-OC627F9C37C7 SMITH GARDNER ENGINEERS - - June 8, 2020 NCDEQ Division of Water Quality Attention: DWQ Central Files 1617 Mail Service Center Raleigh, NC 27699-1617 RE: Discharge Monitoring Report —May 2020 Davidson County landfill Certificate of Coverage #NCG120038 Dear Sir/Madam: ADDRESS TEL WEB 14 N. Boylan Avenue, Raleigh NC 27603 919.82e.0577 wwwsmithgardnerinc.com JUN 2 3 2020 FI On behalf of Davidson County, Smith Gardner, Inc. (S+G) is pleased to submit the attached Discharge Monitoring Report (DMR) and associated analytical report for stormwater monitoring at the Davidson County Landfill. The facility is permitted to discharge stormwater related to landfilling activities under Certificate of Coverage (COC) Number NCG120038, General Permit Number NCG120000. The facility is required to monitor discharge at four (4) Stormwater Discharge Outfalls: C&D pond, C&D new pond, Phase 2 Pond 3, and Phase 2 Pond 4. There was no discharge during the May 2020 sampling period. We are providing two (2) copies of the May DMR report for this submittal. If you have any questions, or require further information, please contact us via phone at (919) 828-0577 or by email. Sincerely, SMITH GARDNER, INC. CDocuSigned by: ciu C. U CSECC95C937E4AC.. Jesse C. Li, E. I. Staff Engineer, ext. 170 iesse(asmithgardnerinc.com Attachments CC: Steven Sink (Davidson County) Joan Smyth, P.G. (S+G) File EDocuSigned by: V_ S A"- 586831996A674D7. Pieter K. Scheer, P.E. Senior Engineer, ext. 123 pieterfasmithgardnerinc.com H:\Projects\Davidson County (NCN02 DC Compliance\03 DC NPDES\24, May 2020\DWQnpdes_DavCo_May2020.docx Semi-annual Stormwater Discharge Monitoring Report for North Carolina Division of Energy, Mineral and Land Resources General Permit No. NCG120000 Date submitted June 8, 2020 CERTIFICATE OF COVERAGE NO. NCG12 0 0 3 8 FACILITY NAME Davidson County Landfill COUNTY Davidson PERSON COLLECTING SAMPLES LABORATORY Research and Analytical Laboratory Lab Cert. # 34 Comments on sample collection or analysis: Part A: Stormwater Benchmarks and Monitoring Results SAMPLE COLLECTION YEAR 2020 SAMPLE PERIOD ❑ Jan -June ❑ July -Dec or 7 Monthly' M ly (month) DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA []Zero -flow ❑Water Supply ❑SA ❑■ Other _ -_ PLEASE REMEMBER TO SIGN ON THE REVERSE -i n No discharge this periods Outfall No. Date Sample Collected' (mo/dd/yr) 24-hour rainfall amount, Inches3 Chemical Oxygen Demand mg/L Fecal per Col10m Colonies per 100 mL Total Suspended Solids mg/L and Standard Units Benchmarks - 120 1000 100 or 504 6.0-9.0 Parameter Code C&D Pond - 46529 00340 31616 C0530 00400 No discharge this period C&D New Pond No discharge this period Ph. 2 Pond 3 No discharge this period Ph. 2 Pond 4 No discharge this period ' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmarK exceedance Tor the same parameter at ine same vutian. ' For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here. 3The total precipitation must be recorded using data from an on -site rain gauge. Unattended sites may be eligible for a waiver of the rain gauge requirement. See General Permit text, Table 1, identifying the especially sensitive receiving water classifications where the more protective benchmark applies. Note: Results must be reported in numerical format. For example do not report Below Detection Limit, BDL, <PQL, Non -detect, ND, or other similar non - numerical format. When results are below the applicable limits, they must be reported in the format, "<XX mg/L", where XX is the numerical value of the detection limit, reporting limit, etc. in mg/L. Conversely, where fecal coliform results exceed the dilution upper limit, report the result as ">XX". Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text. Permit Date: 11/1/2018 5/31/2021 SWU-248, last revised 11/1/2018 Page 1 of 2 Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month. n No discharge this period' Outfall No. Date Sample Collected' (mo/dd/yr) 24-hour rainfall amount, Inches; Non -Polar Oil & Grease mg/L Total Suspended Solids, mg/L New Motor or Hydraulic Oil Usage, gal/mon Benchmarks - - 15 100 or 504 Parameter Code - 46529 00552 C0530 NCOIL Footnotes from Part A also apply to this Part B Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text. FOR PART A AND PART B MONITORING RESULTS: • A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B. • 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B. • TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES Q NO ❑ IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE? YES[] NO ❑ REGIONAL OFFICE CONTACT NAME: Jennifer Carter Mail an original copy of this DMR including all "No Discharge" reports within 30 days of receipt of the lab results (or at end of monitoring period in the case of "No Discharge" reports) to: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "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 perps�ons)iirectly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete am awaN1Mat ere are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." Signature of Permittee Permit Date: 11/1/2018-5/31/2021 Date SWU-248, last revised 11/1/2018 Page 2 of 2 Semi-annual Stormwater Discharge Monitoring Report for North Carolina Division of Energy, Mineral and Land Resources General Permit No. NCG120000 Date submitted June 8, 2020 CERTIFICATE OF COVERAGE NO. NCG12 0 0 3 8 FACILITY NAME Davidson County Landfill COUNTY Davidson PERSON COLLECTING SAMPLES LABORATORY Research and Analytical Laboratory Lab Cert. # 34 Comments on sample collection or analysis: Part A: Stormwater Benchmarks and Monitoring Results SAMPLE COLLECTION YEAR 2020 SAMPLE PERIOD ❑ Jan -June ❑ July -Dec or F■ Monthly' May (month) DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA ❑Zero -flow ❑Water Supply ❑SA ❑N Otherc PLEASE REMEMBER TO SIGN ON THE REVERSE 4 No discharge this period2 Outfall No. Date Sample Collected' (mo/dd/yr) 24-hour rainfall amount, Inches; Chemical Oxygen Demand mg/L Fecal per Col10m Colonies per 100 mL Total Suspended Solids mg/L Standard Units and Benchmarks - 120 1000 100 or 504 6.0-9.0 Parameter Code - 46529 00340 31616 C0530 00400 C&D Pond No discharge this period C&D New Pond No discharge this period Ph. 2 Pond 3 No discharge this period Ph. 2 Pond 4 No discharge this period 1 Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall. 'For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here. 3The total precipitation must be recorded using data from an on -site rain gauge. Unattended sites may be eligible for a waiver of the rain gauge requirement. "See General Permit text, Table 1, identifying the especially sensitive receiving water classifications where the more protective benchmark applies. Note: Results must be reported in numerical format. For example, do not report Below Detection Limit, BDL, <PQL, Non -detect, ND, or other similar non - numerical format. When results are below the applicable limits, they must be reported in the format. "<XX mg/L", where XX is the numerical value of the detection limit, reporting limit, etc, in mg/L. Conversely, where fecal coliform results exceed the dilution upper limit, report the result as ">XX". Note: if you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text. Permit Date: il/1/2018-5/31/2021 SWU-248, last revised 11/1/2018 Page 1 of 2 Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month. n d No dischorAe this period Outfall No. Date Sample Collected' (mo/dd/yr) 24-hour rainfall amount, Inches' Non -Polar Oil & Grease mg/L Total Suspended Solids, mg/L New Motor or Hydraulic Oil Usage, gal/mon Benchmarks _ - 15 100 or 504 — Parameter Code - 46529 00552 C0530 NCOIL Footnotes from Part A also apply to this Part B Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text. FOR PART A AND PART B MONITORING RESULTS: • A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B. • 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B. • TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES Q NO ❑ IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE? YES Q NO REGIONAL OFFICE CONTACT NAME: Jennifer Carter Mail on original copv of this DMR including all "No Discharge" reports within 30 days of receipt of the lab results for at end of monitoring period in the case of "No Discharge" reports) to: Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center Raleigh, North Carolina 27699-1617 YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED: "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 personsVirectly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. am awat2� hatibere are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations." Signature of Permittee Permit Date:11/1/2018-5/31/2021 6--.0 -f)7) Date SWU-248, last revised 11/1/2018 Page 2 of 2