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HomeMy WebLinkAboutSW6201004_Emails_20210421 Farkas, Jim J From:Farkas, Jim J Sent:Wednesday, April 21, 2021 3:46 PM To:mlowder@trianglesitedesign.com Subject:RE: SW6201004 - Blackhawk Landing Matt, I was looking over the additional information you provided on March 17, 2021. Everything looks good except for a few small issues: Please correct the following: - Original Comments 8 & 10 (Prior Comments 2 & 3 respectively) – The full build-out potential of the off-site drainage areas is 100% BUA. That means that the entire off-site portion of the drainage area should be considered 100% impervious for the calculations. Currently, the submission shows an off-site area of 441,638 sf and an off-site impervious area of 334,642 sf (Which is only approximately 75% BUA, not 100%). It is recommended to divert off-site runoff around the proposed SCM since you’ll be treating almost as much off-site area as on-site BUA. - Original Comment 20 (Prior Comment 6) – It appears as though the drainage area to the SCM is incorrect, there are areas within the SCM drainage area (See attached) that do not appear to drain to the wet pond. It is unclear where the highlighted portion of the off-site drainage area (DA.png) goes since it is not within the drainage area to any inlet & there does not appear to be a conveyance from this area to the wet pond. In addition, the portion of the project area near Ledger Brook Lane (DA 2.png) appears to just directly discharge into the wetland via the pipe network & overland flow. If it is not possible to direct the BUA associated with the Ledger Brook Lane portion of the project to an SCM, the wet pond can be oversized to treat this area. If this is the case, the drainage area to the wet pond should not include the Ledger Brook Lane area but rather a note should be added to the Supplement-EZ Form indicating that the wet pond is oversized and by how much. The drainage area to the wet pond in the calculations and plans should reflect the actual area that drains to the wet pond. Please show this drainage area on the plans and base the calculations off of this area. Please provide the following: - Revised plans, 2x hard copies & 1x electronic copy (if needed) - Revised calculations, 1x hard copy & 1x electronic copy (if needed) - Revised Application, 1x hard copy & 1x electronic copy (if needed) - Revised Supplement-EZ Form, 1x hard copy & 1x electronic copy (if needed) - Any other revised documents, 1x hard copy & 1x electronic copy (if needed) NOTE: Per Division policy, the next review of this application will be the final review. Failure to provide the requested information will result in the project being returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the application fee. Hard copies should be mailed to me at the following address: 512 N. Salisbury Street 1612 Mail Service Center Raleigh, NC 27699-1612 Electronic copies should be uploaded at the following location: https://edocs.deq.nc.gov/Forms/SW_Project_Submittal 1 Please resubmit on or before 5/21/2021. Let me know if you have any questions. Jim Farkas Environmental Engineer North Carolina Department of Environmental Quality Division of Energy, Mineral, & Land Resources – Stormwater Program 512 N. Salisbury Street 1612 Mail Service Center Raleigh, NC 27699-1612 (919) 707-3646 Jim.Farkas@ncdenr.gov Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public during this challenging time. From: Farkas, Jim J Sent: Monday, February 22, 2021 3:59 PM To: 'mlowder@trianglesitedesign.com' <mlowder@trianglesitedesign.com> Cc: Lawyer, Mike <mike.lawyer@ncdenr.gov> Subject: RE: SW6201004 - Blackhawk Landing Good Afternoon, The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater Management Permit Application th for the subject project on January 25, 2021. A review of that information has determined that the application is not complete. Attached is a letter describing the items that need to be submitted. If you have any questions, please feel free to contact me. My contact information is listed below. Thank you, Jim Farkas Environmental Engineer 2 North Carolina Department of Environmental Quality Division of Energy, Mineral, & Land Resources – Stormwater Program 512 N. Salisbury Street 1612 Mail Service Center Raleigh, NC 27699-1612 (919) 707-3646 Jim.Farkas@ncdenr.gov Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public during this challenging time. From: Farkas, Jim J Sent: Tuesday, November 10, 2020 3:37 PM To: mlowder@trianglesitedesign.com Cc: Lawyer, Mike <mike.lawyer@ncdenr.gov> Subject: SW6201004 - Blackhawk Landing Good Afternoon, The Division of Energy, Mineral and Land Resources (DEMLR), received a Stormwater Management Permit Application th for the subject project on October 6, 2020. A review of that information has determined that the application is not complete. Attached is a letter describing the items that need to be submitted. If you have any questions, please feel free to contact me. My contact information is listed below. Thank you, Jim Farkas Environmental Engineer North Carolina Department of Environmental Quality Division of Energy, Mineral, & Land Resources – Stormwater Program 512 N. Salisbury Street 1612 Mail Service Center 3 Raleigh, NC 27699-1612 (919) 707-3646 Jim.Farkas@ncdenr.gov Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental Quality has adjusted operations to protect the health and safety of the staff and public. Many employees are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office locations are limiting public access to appointments only. Please check with the appropriate staff before visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your patience as we continue to serve the public during this challenging time. 4