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Home My WebLink AboutNCG030666_DMR_20200331G US COMPLIANCE April 7, 2020 Division of Water Quality Attn: DWQ Central Files 1617 Mail Service Center ��t��F Raleigh, NC 27699-1617 t— n APR 2 7 2020 Re: Stormwater Discharge Monitoring Report — March 2020 CENTRAL FILES US Chemical Storage (Wilkesboro) DWR SECTION 1806 River Street Wilkesboro, NC 28697 Permit Number: NCG030666 To Whom It May Concern: In August 2019, the facility had its second benchmark limit exceedance for Zinc. Please find enclosed the completed Monthly Stormwater Discharge Monitoring Report for North Carolina Division of Water Resources General Permit No. NCG030666 for US Chemical Storage, located at the above -mentioned address. Facility has been back below their Zinc limits for two consecutive monitoring periods and will require one more monthly sample before returning to semi-annual sampling. If you have any questions or concerns, please feel free to contact Alexa Rinde at (952) 567-5630 or via email at arinde@uscompliance.com. Sincerely, Alexa Rinde Environmental Specialist II U.S. Compliance Corporation cc. Adrianne Brookshire, US Chemical Storage Enclosures 888-897-8681 1 520 Third Street, #100, Excelsior, MN 563311 uscompliance.com Stormwater Discharge Monitoring Report for North Carolina Division of Energy, Mineral and Land Resources General Permit No. NCG030000 Date submitted 4/7/2020 CERTIFICATE OF COVERAGE NO. NCG03 0 6 6 6 FACILITY NAME US Chemical Storage (Wilkesboro) COUNTY Wilkes County PERSON COLLECTING SAMPLES Adrianne Brookshire LABORATORY Pace Lab Cert. # ENV375 IUE Comments on sample collection or analysis: Part A: Stormwater Benchmarks and Monitoring Results APR 2 7 2020 "ENI'KAL FILES DWR SECTION SAMPLE COLLECTION YEAR 2020 SAMPLE PERIOD 0 Jan -June ❑ July -Dec or Q Monthly' March (month) DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA ❑Zero -flow ❑Water supply ❑SA *Other WS-lv PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4 ❑■ No discharge this period?2 Outfall No. Date Sample Collected' (mo/dd/yr) 24-hour rainfall amount, Inches' Total Suspended Solids pH, Standard units Total Copper Total Lead Total Zinc Non -Polar O&G/Total Total Petroleum Hydrocarbons Toxic Organics' Benchmarks _ - 100 mg/L or 50 mg/L° 6.0 — 9.0 0.010 mg/L 0.075 mg/L 0.126 mg/L 15 mg/L 1 mg/L Parameter Code - 46529 C0530 00400 01119 01051 01094 00552 78141 Outfall 01 ' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall. Z 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, Section B, Table 1 to identify the especially sensitive receiving water classifications where the more protective benchmark applies. ' Total Toxic Organics sampling is applicable only for those facilities which perform metal finishing operations, manufacture semiconductors, manufacture electronic crystals, or manufacture cathode ray tubes. For purposes of this permit the definition of Total Toxic Organics is that definition contained in the EPA Effluent Guidelines for the facility subject to the requirement to sample (for metal finishing use the definition as found in 40 CFR 433.11; for semiconductor manufacture use the definition as found in 40 CFR 469.12; for electronic crystal manufacture use the definition as found in 40 CFR 469.22; and for cathode ray tube manufacture use the definition found in 40 CFR 469.31). Permit Date: 11/1/2018-05/31/2021 SWU-245, last revised 11/1/2018 Page 1 of 3 Facilities that incorporate a solvent management plan into the Stormwater Pollution Prevention Plan may so certify, and the requirement for TTO monitoring may be waived. The solvent management plan shall include a list of the total toxic organic compounds used and the other elements listed in the General Permit. For those facilities electing to employ the TTO monitoring waiver, the discharger shall sign the following certification statement: "Based upon my inquiry of the person or persons directly responsible for managing compliance with the permit monitoring requirement for total toxic organics (TTO), I certify that to the best of my knowledge and belief, no dumping of concentrated toxic organics into the stormwater or areas which are exposed to rainfall or stormwater runoff has occurred since filing the last discharge monitoring report. I further certify that this facility is implementing the all the provisions of the solvent management plan included in the Stormwater Pollution Prevention Plan." Name (Print name) Title (Print title) Signature Date 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. 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' New Motor Oil or Hydraulic Oil Usage Non -Polar O&G/ Total Petroleum Hydrocarbons Total Suspended Solids Benchmarks - - 15 mg/L 100 mg/L or 50 mg/L4 Parameter Code 46529 NCOIL 00552 C0530 Footnotes from Part A also apply to 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. Permit Date: 11/1/2018-05/31/2021 SWU-245, last revised 11/1/2018 Page 2 of 3 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 0 IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE? YES ®NO Q REGIONAL OFFICE CONTACT NAME: Mail an oriainal copv 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." Signature of Permittee 4)1,5 hto an Date Permit Date: 11/1/2018-05/31/2021 SWU-245, last revised 11/1/2018 Page 3 of 3