The URL can be used to link to this page

Home My WebLink About20130701 Ver 1_EEP Letters_20130930NCDENR North Carolina Department of Environment and Natural Resources Division of Water Resources Water Quality Programs Pat McCrory Thomas A. Reeder Governor Acting Director September 30, 2013 Mr. Tim Baumgartner N.C. Ecosystem Enhancement Program 1652 MSC Raleigh, NC 27699 -1652 RE: Closeout of NCEEP Stormwater BMP Nutrient Offset Sites CORRECTED Mr, Baumgartner: John E. Skvarla, III Secretary The N.C. Division of Water Resources (DWR) issued a closeout letter for the following projects on September 20, 2013. This letter will serve as a replacement to that letter. DWR has received the following documents from you for review for closeout: DWQ EEP Project Documents DWR BMP Type Closeout Project Project Name /County Site Request No. No. Visit Date Date 2013 -0704 670 Wayne Community Closeout report 9/18/13 Stormwater 6/24/13 College BMP /Wayne and supporting Wetland does 2013 -0701 668 River Bend Closeout report 9/18/13 Stormwater 6/24/13 BMP /Craven and supporting Wetland does Based on the information presented and the site visits, all of the above - referenced sites appear to have met the performance standards provided in the North Carolina Stormwater Best Management Practices (BMP) Manual for stormwater wetlands and their ability to provide nitrogen nutrient offsets. Per Session Law 2007 -438, any nutrient offset payments received alter September 1, 2007, must comply with the service area restrictions identified in 15A NCAC 02B .0240. The nitrogen nutrient offsets generated from the Wayne Community College BMP can be used to offset development impacts in the Neuse River Basin for nutrient offset payments received prior to September 1, 2007 and within the 8 -digit Hydrologic Unit Code (HUC) 03020202 for payments received after September 1, 2007. The nitrogen nutrient offsets generated from the River Bend BMP can be used to offset development impacts in the Neuse River Basin for nutrient offset payments received prior to September 1, 2007 and within the 8 -digit HUC 03020204 for payments received after September 1, 2007. 401 and Buffer Permitting Unit 1650 Mail Service Center, Raleigh, North Carolina 27699 -1650 Location: 512 N. Salisbury St, Raleigh, North Carolina 27604 Phone: 919 - 807 -63001 FAX: 919- 807.64941 Customer Service: 1- 877 - 623.6748 Internet: www,ncwaterquality.org An Equal Opportunity i Affirmative Action Employer NorthCarolina ;Vatlll"l lly Tim Baumgartner EEP SW BMP Nutrient Offset Closeout Sites September 30, 2013 Page 2 of 2 A few items noted during our site visits on September 18, 2013 are as follows: Wayne County Community College Stormwater Wetland BMP - o Small pine trees were growing on and around the forebay berm that is located between the forebay and the deep pool along Wayne Memorial Drive. In an effort to prevent the forebay berm from becoming compromised, DWR suggests that the pine trees be cut down flush to the ground leaving the root mass intact. • DWR highly suggests that periodic pruning of woody stems along the banks of the wetland be performed to allow sunlight to penetrate through to the herbaceous layer, thus maintaining a stable ground cover throughout the Life of the wetland. • There was trash in the forebay that needs to be removed. • DWR highly suggests that inspections be performed at the outlet structure after substantial rainfall events to ensure that the small diameter orifice does not become clogged. River Bend Stormwater Wetland BMP at Ritter Field — o Baccharis halimifolia was present in dense masses along the shallow land areas where shallow plants were planted. If not controlled, these shrubs can outcompete and shade out the other varieties of plants needed for the wetland to function appropriately. DWR highly suggests that these shrubs be cut down flush to the ground leaving the root mass intact. • DWR highly suggests periodic pruning of woody stems, including Baccharis, along the banks of the wetland to allow sunlight to penetrate through to the herbaceous layer, thus maintaining a stable ground cover throughout the life of the wetland. According to the Memorandum of Agreement between NCEEP and Wayne County Community College (WCC), WCC is to maintain the WCC Stormwater Wetland BMP for a period of 30 years and must submit maintenance and inspection reports to NCEEP every two years for thirty years. According to the Contractor Agreement between NCEEP and the "Town of River Bend (TORB), the TORB is to maintain the River Bend Stormwater Wetland BMP for a period of 30 years and must submit maintenance and inspection reports to NCEEP every two years for thirty years. Please note that NCEEP is required to maintain accurate ledgers for all of these projects, and these ledgers must be available for review upon request. Please feel free to contact Katie Merritt at (919) 807 -6371 if you have any questions regarding this letter. Sincerely, k(wx) Karen Higgins, Supervis 401 and Buffer Permitting Unit KAH /km cc: File Copy - Katie Merritt NCEEP - Jeff Schaffer (via electronic mail)