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Home My WebLink About20001449 Ver 1_Triage Comments_20030401~$) Impacts Table: Amount Approved Units Plan Location or Reference Stream feet Wetlands acres Waters acres Buffers s uare feet $$) $$) Compensatory Mitigation Mitigation must be provided for the proposed impacts as specified in the table below. A final compensatory mitigation plan must be approved in writing by this Office before any of the impacts approved herein are conducted. Additionally, the compensatory mitigation plan must be completely constructed and implemented according to the plans approved by this Office before any permanent building associated with the project is occupied. The mitigation must be maintained according to the approved plan. Any repairs or adjustments to the mitigation site must be made according to the approved plan or must receive written approval from this Office to make the repairs or adjustments. Com ensato Miti ation Re uired Stream feet Wetlands acres Waters acres Buffers s uare feet Compensatory Mitigation Using the Wetlands Restoration Program (WRP) Mitigation must be provided for the proposed impacts as specified in the table below. We understand that you wish to make a payment to a fund administered by the NC Wetlands Restoration Program (WRP) to meet this mitigation requirement. This has been determined by the DWQ to be a suitable method to meet the mitigation requirement. This contribution will satisfy our compensatory mitigation requirements. Until the WRP receives and clears your _L check (made payable to: DENR -Wetlands Restoration Program Office), no impacts specified ~. in this Authorization Certificate shall occur. Mr. Ron Ferrell should be contacted at (919) 733- 5208 if you have any questions concerning payment into the WRP. You have one month from the date of this approval to make this payment. For accounting purposes, this Authorization ~~ ~ Certificate authorizes payment into the Riparian Buffer Restoration Fund to meet the following compensatory mitigation requirement: ~~ Compensatory Mitigation River and Subbasin ~1~` ~(~ Re uired Number Stream feet Wetlands acres Waters Buffers acres s uare feet ^`~ t ~, ~~~~ ~ ~ ~ ~~~',~ . Written stormwater Management Pla ~( ~, ~ I'"-~ ~ "Y-'a,~~"" 1 ~ A~, ,/~ ~~1~ ,~,~ ~ow~ fk.tSG /~ ttt i/ An additional condition is t a final, written stormwater management pla shall be approved in writing by this Office b re the impacts specified in this Certification occu~er Condition No. ~j in GC No. 3~Z . he stormwater management plan must include plans and specifications for stormwater management facilities that are appropriate for surface waters classified as ~~'`~'~' Ce~'~ $$) $$) SS) SS) and designed to remove 85% TSS according to the most recent version of the NC DENR Stormwater Best Management Practices Manual. These facilities must be designed to treat the runoff from the entire project, unless otherwise explicitly approved by the Division of Water Quality. Also, before any permanent building is occupied at the subject site, the facilities (as approved by this Office) shall be constructed and operational, and the stormwater management plan (as approved by this Office) shall be implemented. The structural stormwater practices as approved by this Office as well as drainage patterns must be maintained in perpetuity. No changes to the structural stormwater practices shall be made without written authorization from the Division of Water Quality. (Optional Paragraphs) The above condition shall apply unless it is demonstrated in writing to the satisfaction of this Office that the impervious area of the entire, built-out project shall be less than 30% and that there are no areas of concentrated impervious area over 30% within the project such as, but not limited to, commercial areas, multi-family, clubhouses, maintenance areas, etc. A State Stormwater Permit (15 A NCAC 2H .1000) can be considered to meet this condition. Diffuse Flow (No Review) An additional condition is that all constructed stormwater conveyance outlets shall be directed as diffuse flow at non-erosive velocities through the protected stream buffers such that it will not re-concentrate before discharging into the stream as identified within 15A NCAC 2B .02 (5). If this is not possible it may be necessary to provide stormwater facilities that are considered to remove nitrogen. This may require additional approval from this Office. Diffuse Flow (Review) An additional condition is that all constructed stormwater conveyance outlets shall be directed to flow in a diffuse manner at non-erosive velocities through the entire protected stream buffers without re-concentrating. If this is not possible it may be necessary to provide stormwater facilities that are considered to remove nitrogen. Additionally, a stormwater management plan for this project shall be provided to this Office before any of the impacts approved herein are conducted. The plan shall specify all stormwater discharge points, plan details, and calculations to indicate that diffuse flow through the protected buffers or nitrogen removal as described above will be achieved. Certificate of Completion Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer Rules, and any subsequent modifications, the applicant is required to return the attached certificate of completion to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650. Deed Notifications Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands, waters and protective buffers in order to assure compliance for future wetland, water and buffer impact. These mechanisms shall be put in place prior to impacting any wetlands, waters and/or buffers approved for impact under this Certification Approval and Authorization Certificate. A sample deed notification can be downloaded from the 401/Wetlands Unit web site at http://h2o.enr.state.nc.us/ncwetlands.