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HomeMy WebLinkAboutNCG030504 Letter/LabsFLOWSERVE N%=000 December 2, 2014 Mr. Bradley Bennett, PE NCDENR, Division of Energy, Minerals, & Land Resources 1612 Mail Service Center Raleigh, NC 27699-1612 RE: NPDES General Permit No. NCG030000 COC No. NCG030504 Dear Mr. Bennett: Flow Control Operations Anchor/Darling Valves BW/IP Valves Edward Valves Valtek Control Products Worcester Valves In accordance with our Stormwater General Permit No. NCG030000, this letter is to inform you that after four measurements, we have exceeded our Tier 2 Requirements and are in Tier 3 of our permit. We have performed upstream (Alternate; FL -ALT) and downstream monitoring (SDO-001 & SDO-002) to characterize the impact on our receiving waters. SDO-001 was chosen as it minimizes the number of outfall points at our facility and an early first flush sample would not typically include the off-site flow. Data collected in our third party (Jim Frei of'Stormwater Services Group) sampling events support we are receiving stormwater from South Saunders Street (FL -ALT) that exceeds the benchmarks set forth by NCDENR/DEMLR. We have also taken Best Management Steps that include sweeping the parkirig lot, removing . trash & debris, installing basin inserts in our storage, receiving & shipping areas to filter metals. We have also installed drain tags that say "No Dumping — Drains to River". With all of these BMPs in place, we are seeing Copper and Zinc measurements lower in our discharges than in the off-site runoff flowing into our outfalls. Copper BMV is extremely low and may never be achievable in an urban environment with several off-site sources of Copper contributing to run- off. I am asking for a waiver from the monthly monitoring to allow us to continue to operate. We will continue to have our Copper, Lead, Zinc, Oil & Grease, and TSS measured twice per year. I will also continue to send you copies of our reports twice per year. Sincerely, &Vw, ol-611'eW Sharon L. Owens Safety, Health, Environmental Affairs Manager Flowserve, Inc. 1900 S. Saunders St. Raleigh, NC 27603 sowens@flowserve.com Flowserve U S Inc Flow Control Operations Raleigh Operations PO Box 1961 1900 South Saunders Street Raleigh, NC 27603 Toll Free: 1-800-225-6989 Phone: 1-919-832-0525 Facsimile: 1-919-831-3376 www.flowserve.com Stormwater Sampling Analysis 12/23/2013 mg/L Copper Lead Zinc Solids Oil & Grease Collection 24 Hr. Rain Benchmark 0.007 0.03 0.067 100 15 6/6/2013 Outfall -001 0.012 <0.0050 0.088 7.9 <5.0 0.54" Outfall -002 .0.0067 <0.0050' 0.13 12.2 <5.0 12/23/2013 Outfall -001 1 <0.0050 1 <0.0050 0.015 11.2 <5.0 1.45" Outfall -002 0.012 1 <0.0050 0.068 12.3 <5.0 4/7/2014 Outfall -001 0.01 <0.0050 0.058 <5.0 5.3 0.92" Outfall -002 0.01 <0.0050 0.19 12.5 3.2 5/15/2014 Outfall -002 1 0.0094-1-<0.0050 0.026 1 0.1 1 8.2 1 <5.0 4.23" Alternate 0.009 1 N/D 1 0.1 7.9 <5.0 6/11/2014 Outfall -002 0.075 0.0071 1 0.31 F66.8 95.1 1.26" 7/15/2014 Outfafl-001 0.018 0.026 0.096 94.9 <5.0 2.88" Outfa11-002 0.0074 N/D 0.075 7.9 <5.0 0.051 Alternate 0.02 0.034 0.091 9/24/2014 Outfall -001 0.015 0.7 0.13 5.2 Outfall -002 1.14" Outfall -002 <0.0050 4.5 0.17 Alternate 0.058 0.051 Alternate 0.027 17.1 0.07 11/17/2014 Outfall -001 0.053 0.014 0.7 109 5.2 Outfall -002 <0.0050 <0.0050 0.22 4.5 <0.0050 Alternate 0.058 0.051 0.38 204 17.1 Alternate (FL -ALT): Receiving stormwater from South Saunders Street Outfall -001, Outfall -002: Discharge waters Enclosure; Discharge Monitoring Report cc: Danny Smith, Raleigh Regional Office Flowserve U S Inc Raleigh Operations Toll Free: 1-800-225-6989 Flow Control Division PO Box 1961 Phone: 1-919-832-0525 1900 South Saunders Street Facsimile: 1-919-831-3369 Raleigh, NC 27603 www.flowserve.com Page 2 of 2