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HomeMy WebLinkAboutNCG090006_DMR_20201123Semi-annual Stormwater Discharge Monitoring Report for North Carolina Division of Water Quality General Permit No. NCG090000 Date submitted 11/23/20 CERTIFICATE OF COVERAGE NO. NCG090006 FACILITY NAME Mallard Creek Polymer COUNTY Mecklenburg PERSON COLLECTING SAMPLES Jens Schoenfuss LABORATORYPAR Lab Lab Cert. # 20 Comments on sample collection or analysis: Part A: Stormwater Benchmarks and Monitoring Results SAMPLE COLLECTION YEAR _2020 SAMPLE PERIOD ❑ Jan -June ® July -Dec �FF(0%'`CC �� or ❑ Monthly' (month) �1k Ak61� CLASS ❑ORW ❑HQW ❑Trout ❑PNA DEC 0 7 2020 ❑Zero -flow ❑Water Supply ❑SA CENT ®Other_C Water Body LES DWR SECTION PLEASE REMEMBER TO SIGN ON THE REVERSE ❑ No discharge this period?' Outfall No. Date Sample Collected' (mo/dd/yr) 24-hour rainfall amount, Inches' Total Cadmium Total Chromium Total Lead Benchmarks ===> _ - 0.001 mg/L 1.0 mg/L 0.03 mg/L 001 10/28/20 0.43 <0.001 mg/I 0.010 mg/I 0.009 mg/I 002 10/28/20 0.43 <0.001 mg/I <0.005 mg/I 0.003 mg 003 10/28/20 0.43 <0.001 mg/I <0.005 mg/I <0.002 mg/I ' 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. 'The 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. Note: Results must be reported in numerical format. 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. 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:11/1/2012-10/31/2017 SWU-255, last revised 10/25/2012 Page 1 of 2 Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month. No discharge this period?' Outfall No. Date Sample Collected' (mo/dd/yr) 24-hour rainfall amount, Inches' Non -polar O&G/TPH by EPA 1664(SGT-HEM) Total Suspended Solids pH Benchmarks =__> - 15 mg/L 100 mg/L or 50 mg/L* 6.0 — 9.0 SU 001 6/10/20 0.43 NA 143 mg/I 7.03 002 6/10/20 0.43 NA 61 mg/I 7.31 003 6/10/20 0.43 NA 19 mg/I 6.92 Footnotes from Part A also apply to this Part B * See General Permit text, Table 5, identifying the especially sensitive receiving water classifications where the more protective benchmark applies. 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 11 SECTION B. * TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES ❑ NO IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑ REGIONAL OFFICE CONTACT NAME: Mail an original and one 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 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." (Date) Permit Date:11/1/2012-10/31/2017 SWU-255, last revised 10/25/2012 Page 2 of 2