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Home My WebLink AboutItem #14 - DEMLR Review Results Letter 11-20-17Kro Energy, Mineral & Land Resources ENVIRONMENTAL QUALITY November 20, 2017 Mr. Matthew Osborne City of Winston-Salem/Forsyth County Sediment and Erosion Control PO Box 2511 Winston-Salem NC 27102 Subject: Sedimentation and Erosion Control Local Program Review ROY COOPER Governor MICHAEL S. REOAN secretary TRACY DAVIS Ditvaor On July 25, 2017 personnel from NCDEQ, Land Quality Section, conducted a review of the City of Winston-Salem/Forsyth County's Sedimentation and Erosion Control Program. A report has been prepared on the review of the program. This report was presented to the Sedimentation Control Commission (SCC) on November 16, 2017. The Sedimentation Control Commission voted to continue delegated administration of the Sedimentation Pollution Control Act of 1973 to Winston-Salem/Forsyth County. The report presented to the SCC is enclosed. Thank your efforts to prevent sedimentation damage. Please contact me if you have any questions at jeevan.neupane@nedenr.gov. Sincerely, Jeevan Neupane., PE Assistant State Sedimentation Specialist Enclosure: SCC Report cc: William E. Toby Vinson, Jr., PE, CPESC, CPM, Chief of Program Operations Julie Coco, PE, CPESC, State Sediment Specialist Matt Gantt, PE, Winston-Salem Regional Engineer Tim Latham, Winston-Salem Senior Environmental Specialist �'•�'"Nothing Compares .,A SlaleofNmth Carolina i hhv(ronmem:d Quality I [atergy, Mlnerni and Lmxl ltesrnv<es SI2 N. Snllsbury Street 17612 Mali Service Center) Raleigh, North Carolina 27699-IGI2 9197079200 1. City of Winston-Salem/Forsyth County On July 259 2017 personnel from NCDEQ, Land Quality Section, conducted a review of the City of Winston-Salem/Forsyth County's Local Program. Five staff members contribute five full time equivalents to the erosion control program. Per your totals, in the last fiscal year, you had conducted a total 102 plan reviews, all of which have been approved. The City/County has 886 current projects, 718 of which are single family dwelling sites. The City has also conducted total 5,646 inspections (2,263 of which were for the grading permit sites and 3,383 for the single-family dwelling sites). In this same time frame 73 Notices of Violations and 10 civil penalties have been issued. The City requires an erosion control plan to be submitted and a grading permit to be obtained when the total footprint of disturbance is greater than 20,000 square feet for Single - Family Dwelling construction sites or 10,000 square feet for any other purposes. If a Single - Family Dwelling construction does not exceed 20,000 square feet, then the building contractor is required to sign a Single -Family Dwelling Erosion Control Affidavit. The affidavit requires the installation of silt fence on all low sides of the disturbed area and a gravel construction entrance. During our review of the program, we inspected five sites and reviewed five plans that had already been approved. The following is a summary of the projects that were inspected: YMCA Jerry Long Improvement This project consisted of 7.38 acres, and was being consriucted for a commercial development. The file for this project included a FRO, calculations, inspections, NPDES construction stormwater permit, stormwater management permit and letter of approvals. The erosion and sediment control plan was approved on February 13, 2017. The approved plan for this site was found to be adequate. The site was active during the visit. The site was inspected six different times. The site was last inspected on July 18, 2017, and was in compliance. During our inspection, the site was in compliance. One recommendation was made in the field: 1) Provide adequate ground cover on all the all bare and inactive areas. Peace Heaven Village This project consisted of 7.38 acres, and was being constructed for a commercial development. The file for this project included a FRO, calculations, inspections, NPDES construction stormwater permit, stormwater management permit and letter of approvals. The erosion and sediment control plan was approved on February 13, 2017. The approved plan for this site was found to be adequate. The site was active during the visit. The site was inspected six different times. The site was last inspected on July 18, 2017, and was in compliance. During our inspection, the site was in compliance. One recommendation was made in the field: 1) Provide adequate ground cover on all the all bare and inactive areas. Chandler Point This project consisted of 29.44 acres, and was being constructed for a residential development. The file for this project included a FRO, calculations, inspections, and letter of approvals. The erosion and sediment control plan was approved March 31, 2017. The approved plan for this site was Found to be adequate. The site was active during the visit. The site was inspected four different times. The site was last inspected on June 9, 2017, and was in compliance. During our inspection, the site was found to be out of compliance. Violations included failure to follow approved plan, failure to take all reasonable measures, failure to maintain erosion control measures and failure to provide adequate ground cover. Some of the issues we noticed during our inspections are: 1) Ingress/egress to/from the site at locations without a construction entrance. 2) There was a construction entrance installed on the other side which was not shown in the approved plan, and the construction entrance was all filled with mud. 3) Most of the areas had adequate ground cover, but there were some areas with inadequate ground cover. 4) There was no positive drainage on some of the diversion ditches. 5) There was some sediment at the south end of the Aurora Glen pavement. A few recommendations were made in the field: 1) Provide a new construction entrance as per shown in the plan. 2) Repair and maintain the existing construction entrance. 3) Provide adequate ground cover on all bare and inactive areas. 4) Remove sediment tracked onto the pavements. 5) Make sure positive drainage is provided on all the diversion channels. Modern Nissan This This project consisted of 5.78 acres, and was being constructed for a commercial development. The file for this project included a FRO, calculations, inspections, and letter of approvals. The erosion and sediment control plan was approved on May 9, 2017. The approved plan for this site was found to be adequate. The site was active during the visit. The construction has just begun; hence no inspections were done for this site. During our inspection, the site was found to be out of compliance. A construction entrance and skimmer basin were not installed. Violations included failure to follow the approved plan and failure to take all reasonable measures. A few recommendations were made in the field. 1) Install construction entrance and skimmer basin as per the approved plan. 2) Stabilize the basin after installing it. Dollar general This project consisted of 1.29 acres and was being constructed for a commercial development. The file for this project included a FRO, calculations, inspections, and letter of approvals. The erosion and sediment control plan was approved on March 15, 2017. The approved plan for this site was found to be adequate. The site was active during the visit. The site was inspected four different times. The site was last inspected on July 11, 2017 and was in compliance. During our inspection, the site was found to be out of compliance. Violations included failure to follow approved plan, failure to take all reasonable measures and failure to maintain erosion control measures. Some of the issues we noticed during our inspections are: 1) There was an accumulation of sediment along the silt fence. 2) An inlet protection was not installed per the approved plan. 3) Silt fence was damaged on some sections. A few recommendations were made in the field: 1) Remove accumulated sediment along the silt fence. 2) Repair and maintain the silt fence where necessary. 2) Replace new stone on silt fence outlets. 3) Remove sediment from the street outside the disturbance limit. 4) Install inlet protection as per the approved plan Conclusion: The City of Winston-Salem/ Forsyth County is inspecting the sites on a frequent basis which is appreciated. The Winston-Salem/ Forsyth County should implement the following recommendations to improve the program: 1) Continue requiring that adequate ground cover is provided within the time limits of the local ordinance and approved plan. 2) In the field, a focus should be placed on stabilizing sediment basin slopes and their associated diversions to prevent internal erosion. Staff recommends continued delegation of the program.