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Home My WebLink AboutNCG140043_Email Attachment Char-Meck Inspection Report_20190603.pdfChadoffe-uKklert m 2 14 5 S u t t l e Avenue STORMCharlotte, NC 28208 ERFacility Inspection —� services -' Facility Name: Concrete Supply Co-S Plant Inspection # : 23351 Contact: Johnie Alexander, Environmental Manager Permit #: NCG140043 Inspector: Ron Eubanks Receiving Stream: SUGAR Inspection Date: 02/23/2016 Entry Time: 1:00 pm Exit Time: 2:15 pm SIC #: Facility Description: The Concrete Supply Company - South Plant is located at 400 Minuet Lane on approximately 7.33 acres of property in Charlotte. This facility produces ready -mixed concrete products. File Review/History: This facility was previously inspected by Charlotte -Mecklenburg Storm Water Services and the North Carolina Department of Environmental Quality (formerly NCDENR) on February 29, 2012. A Notice of Violation (NOV-2012-PC-0082) was issued by NCDENR for violations of the NPDES Permit and N.C. Water Quality Standards. Inspection Summary: This facility was observed to be in compliance with the City of Charlotte Storm Water Pollution Control Ordinance during the inspection. Please refer to the inspection report for comments and recommendations. Site Inspection Deficiency Comments Stormwater system (catch basins, No Stormwater runoff from a portion of the property drains by inlets, outfalls, etc.) sheet flow and discharges via one (1) outfall. Stormwater runoff from the concrete operation area drains into a retention pond. Erosion issues No There were no stormwater erosion issues observed on the property. Structural stormwater BMPs Recommendation Stormwater runoff from the concrete processing areas of the property and the vehicle wash water drain into a retention pond. Facility personnel indicated that the water in the pond is recycled on the property and it does not discharge off site. It is recommended that the water level of the pond be routinely checked to ensure that it does not discharge. It is also recommended that accumulated sediment in the retention pond be cleaned out as needed. Illicit discharges/connections No There were no illicit discharges or connections observed on the property during the inspection. Aboveground storage tank(s) - list No There is one 6,000-gallon diesel fuel aboveground storage tank sizes & contents tank (AST), one 275-gallon diesel exhaust fluid AST, and several chemical admixture ASTs located on the property. Each of the ASTs is located within secondary containment. Underground storage tank(s) - fill port N/A area; list tank sizes & contents Outdoor material storage area(s) Recommendation Since the concrete waste pit / storage areas are located near the stormwater outfall, it is recommended that the facility continue to maintain the containment berms and continue good housekeeping practices on the property to minimize polluted stormwater runoff. Outdoor processing area(s) No Loading/unloading area(s) No • Ob To report pollution or drainage problems call: 311 CHARLOTTE_ http://stormwater.charmeck.org 2/26/2016 8:57:40AM 0 Page 1 of 3 Site Inspection Deficiency Comments Vehicle/equipment area(s) - fueling, No Concrete Supply Company vehicles are fueled, stored, and washing, storage, etc. washed on site. The vehicle wash water discharges into the facility's retention pond. The water in the retention pond is recycled in various plant operations and it does not discharge into the stormwater outfall. Oil/water separator and/or N/A pretreatment Waste storage/disposal area - No There is one (1) municipal waste dumpster located on the dumpsters, scrap metal bins, etc. property. The dumpster was covered and appeared to be in good condition. Food service area(s) N/A Indoor material storage area(s) No Motor oil and lubricants are located in a small storage building on the property. Cement and fly ash are stored inside silos on the property. Indoor processing area(s) N/A Floor drains N/A Spill response equipment No Spill kits are located in the storage building and adjacent to the fuel dispenser pump for the diesel fuel AST. Stormwater Pollution Plan Observed Comments Does the facility have a stormwater Yes A Stormwater Pollution Prevention Plan (SPPP) has been pollution prevention plan? developed and implemented at the Concrete Supply Company - South Plant. General location (USGS) map Yes Narrative description of practices Yes Detailed site map Yes List of significant spills (past 3 years) Yes A spill from a fuel delivery truck occurred on the property on July 22, 2015. The diesel fuel spill was estimated to be 20 gallons and it was properly documented in the SPPP. Non-stormwater discharge evaluation Yes The most recent non-stormwater discharge evaluation was of outfall(s) conducted at the site on February 10, 2016. Feasibility study Yes All necessary secondary Yes containment provided Collected water evaluated and Yes The diesel fuel AST has double -walled secondary documented prior to release containment. The chemical admixture tanks are located within an uncovered secondary containment area with a locked valve. Stormwater collected within the secondary containment area is inspected and documented prior to release. BMP Summary Yes Spill prevention and response plan Yes Preventative maintenance and good Yes housekeeping plan Facility provides and documents Yes The most recent employee training was conducted on employee training February 19, 2015. List of responsible parties Yes Reviewed and updated annually Yes The most recent update of the SPPP was conducted on December 16, 2015. Stormwater facility inspection Yes Stormwater facility inspections are conducted and program conducted semi-annually documented quarterly at the site. Qualitative/Analytical Monitoring Observed Comments ObTo report pollution or drainage problems call: 311 ''�� CHARIATTE_ http://stormwater.charmeck.org ��j v 2/26/2016 8:57:40AM Page 2 of 3 Qualitative/Analytical Monitoring Observed Comments Qualitative monitoring conducted Yes Qualitative monitoring was recently conducted at the site on semi-annually January 15, 2016 and September 24, 2015. Analytical monitoring conducted Yes Analytical monitoring was recently conducted at the site on semi-annually January 15, 2016 and September 24, 2015. Since there was an exceedence of the Permit benchmark for pH at the stormwater outfall, a Tier I response was conducted and documented at the site. A small crack in a containment wall was determined to be the cause of the elevated pH levels at the outfall. The crack has been repaired and the pH levels are currently within the acceptable range in the Permit. Analytical monitoring from vehicle N/A maintenance Permit and Outfalls Observed Comments Copy of permit and certificate of Yes coverage onsite All outfalls observed Yes Since it had recently rained at the site, stormwater runoff observed at the outfall was slightly turbid. Number of Outfalls Observed 1 Representative outfall status N/A documented by NCDWQ Annual no -exposure self N/A re -certification documented Phase II Permit Requirements Observed Comments Wastes removed from the MS4 N/A properly disposed Public transportation (roadway) N/A projects constructed within the last year Curb miles and parking lots swept N/A documented Catch basin and storm drain pipe N/A cleaning documented Records of pesticide/herbicide N/A applicator licenses maintained for staff and contractors If pesticide treatment areas N/A exceeded, was permit application submitted? Pesticide limitations in Goose Creek N/A Watershed followed • ObTo report pollution or drainage problems call: 311 CHARIATTE_ http://stormwater.charmeck.org 2/26/2016 8:57:40AM Page 3 of 3