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HomeMy WebLinkAbout20061947 Ver 1_Staff Comments_20070525o~~~ w a rfi9Q~ r O `~ `C Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Alan W. Klimek, P.E. Director Division of Water Quality Coleen H. Sullins, Deputy Director Division of Water Quality May 25, 2007 CERTIFIED MAIL #7005 3110 0001 8040 1421 RETURN RECEIPT REQUESTED Grover L. and Lucy Edwards 672 Vincent Lane Henrico, NC 27842 Subject: Follow up to May 17th, 2007 Site Visit Grover L. and Lucy Edwards DWQ Project # 06-1947 Northampton County Dear Mr. Edwards On May 17`", 2007, Mike Horan, from the Division of Water Quality (DWQ) met with you on- site at Spring Garden Lane near Henrico in Northampton County to discuss your restoration efforts. During this inspection Mr. Horan observed the culvert installations and the status of the sediment removal. On May 24, 2007 Mike Horan discussed with you (via the telephone) areas that require further work. The following is a summary of what requires further work from the site inspection on May 17`", 2007: 1. The outlet of the new culvert on Sprin>? Garden Lane (downstream end ^ Remove any deposited sediment within the channel above the check dam. It is recommended that you use hand labor (buckets, shovels and wheelbarrows) to remove deposited sediment from the stream channel. The sediment should be removed from the channel, taken to high ground (more than 100 feet landward from the stream channel) and stabilized. ^ When all work is completed (as described above and below), remove the check dam from the stream. 2. Gravel driveway crossing (including downstream channel) on West Sde_ of Springy Garden Lane ^ The placement of culverts in waters must be placed below the elevation of the streambed to allow low flow passage of water and aquatic life. During the inspection I noted that the placement of this culvert was perched ~ 2 feet above the streambed at the downstream end. Please note, in your 401 Water Quality Certification you indicated the culvert would be installed according to State requirements. Please modify the culvert to the specifications in your plans (see the attached drawing from your 401 Water Quality Certification titled "Section B-B"). Or NorthCazolina JVaturallr~ North Cazolina Division of Water Quality Raleigh Ragional Office Surface Water Protection Phone (919) 791-4200 Customer Service Internet: h20.enr.state.nc.us 1628 Mail Service Center Raleigh, NC 27699-1628 FAX (919) 571-4718 1-877-623-6748 Page 2 of 2 Spring Garden Lane 5/25/2007 Northampton County ^ Install a plunge pool system, similar to the one installed on the east side of Spring Garden Lane, on the downstream end of the culvert. ^ Use large, flat boulders to make the steps. Make sure the boulders are level and secured into the streambed and sides of the channel. ^ Make the elevation of the first pool so it is almost level with the outlet of the culvert. ^ Each subsequent plunge pool should be 6-12"below the previous pool, resulting in approximately two to four plunge pools. The boulders used to separate each pool should be placed such that the water cascades over the boulders. ^ Remove any deposited sediment within the channel as described above. ^ Stabilize the banks with vegetation and riprap (use riprap only as needed). Please note: The installation of a plunge pool system below the gravel driveway crossing on the west side of Spring Garden Lane may require a modification to the application you submitted to the Division of Water Quality and to the US Army Corp of Engineers. 3. Stream clean un from Spring Garden Lane to Butler Drive and below Butler Drive ^ Areas requiring further sediment removal were flagged during the site visit. Sediment should be removed in the areas where sediment is more than 2 inches in depth. Please make sure to remove any deposited sediment within the channel as described above. DWQ will be conducting another site inspection, to ensure the above mentioned steps have been satisfactorily completed. Please note that if these steps are not completed there may be additional civil penalties levied of up to $25,000 per day for each violation. Please feel free to call Mike Horan at (919) 791-4200 or Karen Higgins at (919) 733-5083 ext. 574 if you have any questions or concerns. Your attention to this matter is greatly appreciated. Sincerely, Charles Wakild Regional Supervisor Surface Water Protection Section cc: David Boaz - B & B Consultants, Inc., PO Box 429, South Hill, VA 23970 Danny Smith - NPS-ACO Unit John Holley - DLR Raleigh Regional Office Thomas Brown - U.S. Army Corps of Engineers Raleigh Regional Office Cyndi Karoly - 401 Wetlands Unit RRO/SWP Copy DWQ Central Files