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Home My WebLink AboutNC0031046_202302VRR_20230412_20230412 DMR REVIEW RECORD WinstonSalem Regional Office Facility Name: Colonial Pipeline Greensboro Junction WWTF Permit Number: NC0031046 Report Period: February 2023 Prior Assessments: Enforcement Factor: ______________________________________________________________________________________________________________________________________________________________________ Waterbody Outfall # Outfall Description Waterbody Name Classification ______________________________________________________________________________________________________________________________________________________________________ 004 Oil/Water Separator East Fork Deep River WSIV:* ______________________________________________________________________________________________________________________________________________________________________ Monthly Average Limit Violations ______________________________________________________________________________________________________________________________________________________________________ Sample Location: Outfall 004 Effluent Violation Unit of Limit Calculated % Over Date Parameter Frequency Measure Value Value Limit Action ______________________________________________________________________________________________________________________________________________________________________ 2/28/2023 Methyl TertButyl Ether (MTBE) Monthly ug/l 19 33.50 76.5 ______________________________________________________________________________________________________________________________________________________________________ Daily Limit Violations ______________________________________________________________________________________________________________________________________________________________________ Sample Location: Outfall 004 Effluent Violation Unit of Limit Calculated % Over Date Parameter Frequency Measure Value Value Limit Action ______________________________________________________________________________________________________________________________________________________________________ 2/1/2023 Methyl TertButyl Ether (MTBE) Monthly ug/l 19 78.30 312.1 ______________________________________________________________________________________________________________________________________________________________________ 2/17/2023 Methyl TertButyl Ether (MTBE) Monthly ug/l 19 22.30 17.4 ______________________________________________________________________________________________________________________________________________________________________ Other Violations/Staff Remarks: DMR remarks: “The initial samples collected from Outfall 004 exhibited a concentration of MTBE in exceedance of the permit limit. Additional samples were collected until the permit limit was met. The elevated MTBE is believed to be related to the known groundwater plume of MTBE in the area serviced by this outfall. The outfall continuously flows, regardless of area precipitation, indicating a groundwater component is evident. As this outfall does not release offsite, we believe there to be no offsite impacts.” Minimal and interesting history. Recommend NOV. MAF: 3.9677MGD ______________________________________________________________________________________________________________________________________________________________________ Supervisor Remarks: Jenny – NOV / need to call ORC to discuss because it was determined at site visit that this does discharge to a pond that drains to waters of the state. NOV2023LV0287 ______________________________________________________________________________________________________________________________________________________________________ Completed by: Ron Boone_________________________ Date: 20230412___________ Assistant Regional Supervisor Signoff: JG Date: _4/19/2023 Regional Supervisor Signoff: ___________________________________ Date: ____________________ Prior 12Month Enforcement History Permit Number: NC0031046 Report Period: February 2023 ____________________________________________________________________________________________________________________________________________________________________ Limit Violation ____________________________________________________________________________________________________________________________________________________________________ Sample Location: Outfall 004 Effluent Violation Report Violation Date Period Parameter Type NOD NOV CPA ___________________________________________________________________________________________________________________________________________________________________ 11/1/2022 112022 Methyl TertButyl Ether (MTBE) Daily Maximum NOD2023LV0004 Exceeded ___________________________________________________________________________________________________________________________________________________________________ 2/1/2022 22022 Methyl TertButyl Ether (MTBE) Daily Maximum NOV2022LV0462 Exceeded ___________________________________________________________________________________________________________________________________________________________________ 2/11/2022 22022 Methyl TertButyl Ether (MTBE) Daily Maximum NOV2022LV0462 Exceeded ___________________________________________________________________________________________________________________________________________________________________ 2/28/2022 22022 Methyl TertButyl Ether (MTBE) Monthly Average NOV2022LV0462 Exceeded ___________________________________________________________________________________________________________________________________________________________________ 3/3/2022 32022 Methyl TertButyl Ether (MTBE) Daily Maximum NOV2022LV0463 Exceeded ___________________________________________________________________________________________________________________________________________________________________ 3/31/2022 32022 Methyl TertButyl Ether (MTBE) Monthly Average NOV2022LV0463 Exceeded