The URL can be used to link to this page

Home My WebLink About20071856 Ver 1_More Info Letter_20071113QF WA T~9 Michael F. Easley, Governor p ~ ~ G ~ te William G. Ross Jr., Secretary r -- North Carolina Department of Environment and Natural Resources ~ ~ p ~ Coleen H. Sullins, Director Division of Water Quality November 13, 2007 DWQ EXP No. 07-1856 Franklin County CERTIFIED MAIL: RETURN RECEIPT REQUESTED CADE Construction, Inc. Attn: Bill Bland 120 F Weathers Street Youngsville, NC 27596 Subject Property: Arch Aluminum REQUEST FOR MORE INFORMATION (STORMWATER MANAGEMENT PLAN) - EXPRESS REVIEW Dear Mr. Bland: On December 19, 2002, the Division of Water Quality (DWQ) issued a 401 Water Quality Certification and Buffer Authorization to impact 0.04 acres of wetlands, 144 feet of perennial stream, 148 feet of intermittent stream, and 22,390 square feet of protected riparian buffers for the purpose of constructing two (2) road crossings in the development of Youngsville Industrial Park as described in your application dated October 21, 2002. In order to meet Conditions 2 and 3 of the 401 Certification for this project, a stormwater management plan was submitted to the Express Review Program of the DWQ on November 9, 2007. The DWQ has determined that your application will require additional information. Please provide the following information so that we may continue to review your project and prevent denial of your application as required by 15A NCAC 2H .0506: Additional Information Requested 1. Site Plans a. Please provide one (1) site plan and one (1) copy at a scale of 1":50' or larger showing the Arch Aluminum project site with proposed structures in relation to Youngsville Industrial Park project site and footprints of existing structures. b. Please show on the plans the boundaries of all recorded drainage easements having drainage access easement to public right of way (ROW), and detailed information of all existing drainage structures/features and topographic contours in the area between the outlet structures and the receiving stream. ..1u ~ t+i~ 2. Wet Detention Pond a. Per the Stormwater Management Plan (SMP) Requirements for applicants other than the North Carolina Department of Transportation, stormwater BMPs must be designed, at a minimum, to remove 85% Total Suspended Solids (TSS). Additionally, all projects requiring stormwater management and located in NSW watersheds in the Tar-Pamlico River Basin must also remove a minimum of 30% total nitrogen (TN) and 30% total phosphorus (TP). Please note that astand-alone Wet Detention Pond does not meet the 30% TN and 30% TP treatment levels required for a site draining to NSW Watershed. No~thCarolina 401 Oversight l Express Review Permitting Unit lltllCll~~l, 1650 Mail Service Center, Raleigh, North Carolina 27699-1650 2321 Crabtree Boulevard,-Suite 250, Raleigh, North Carolina 27604 Phone: 919-733-17861 FAX 919-733-689311ntemet: http:!lh2o.enr.state.nc.us/ncwetlands An Equal OpportunitylAffirmative Action Employer- 50% Recycled110% Post Consumer Paper Arch Aluminum Stormwater Management Plan Page 2 of 2 November 13, 2007 Therefore the wet detention pond must either be combined with another BMP, or replaced with an appropriate BMP in order to meet the nutrient removal requirement. Please refer to the following site for more information http://h2o.enr.state.nc.us/ncwetlands/documents/SMPRequirementsforApplicantsothert hanNCDOT.pdf b. All BMPs must be designed in accordance with the most recent version of the NC Division of Water Quality Stormwater Best Management Practices Manual. c. If more than one stormwater BMP is proposed, please include a separate BMP Supplement Form for each proposed BMP. The BMP supplement Forms are available at http://h2o.enr.state.nc.us/su/bmp forms.htm. Please include both the Design Summary and the Required Items Checklist along with all the required items listed therein. d. Please include a signed and notarized Inspection and Maintenance Agreement Form for each proposed BMP. 3. Diffuse Flow a. Additionally, per Condition 3 of the approved 401, Certification, please show how the stormwater from the BMP shall be directed as diffuse flow at non-erosive velocities through protected riparian buffers, if any, and will not re-concentrate prior to discharging into the receiving stream (unnamed tributary to Brandy Creek). In particular, please include the exit velocities at the outlet structures with supporting calculations. Please respond within five (5) days of the date of this, letter by sending two (2) copies of the above information in writing. The Express Review Program is a process that requires all parties to participate in a timely manner. This letter only addresses the application review and does not authorize any impacts to wetlands, waters or protected buffers. Please be aware that any impacts requested within your application are not authorized (at this time) by the DWQ. Please contact Joseph Gyamfi or Lia Myott at 919-733-1786 if you have any questions regarding or would like to set up a meeting to discuss this matter. Sincere , Cyndi Karoly, Supervisor O1 Oversight/Express Review Permitting Unit CBK/jg cc: James Shern, USACE Raleigh Regulatory Field :Office Lauren Witherspoon, DWQ Raleigh Regional Office File Copy Central Files Jay Keller, Keller Environmental, 7921 Haymarket Lane, Raleigh, NC 27615