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HomeMy WebLinkAbout20160681 Ver 1_More Info Requested_20160721Burdette, Jennifer a From: Steenhuis, Joanne Sent: Thursday, July 21, 2016 4:30 PM To: Burdette, Jennifer a Subject: FW: DWR Comments for Blake Farm (DWR # 20160681) Joanne Steenhuis Transportation Permitting Branch Divisions 3 & 6 Department of Environmental Quality Wilmington Regional Office 127 Cardinal Drive Ext. Wilmington, NC 28405 Direct phone 910.796.7306 Cell 910.308.4021 Joanne. Steenhuis@,ncdenngov **E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.** From: Steenhuis, Joanne Sent: Thursday, July 21, 2016 4:19 PM To: Greer, Emily C SAW <Emily.C.Greer@usace.army.mil> Subject: DWR Comments for Blake Farm (DWR # 20160681) Emily, The DWR has reviewed the IP application for Blake farms and the public notice and have the following comments: 1. The map is shown at such a small scale that additional maps are necessary to break up the subdivision into sections that are more legible (1" = 100'). It is difficult to see the details necessary to adequate review the project. Please label lot numbers. 2. The detailed wetland impacts need to show more adjacent areas for reference and review.. (i.e. Impacts A & J can be shown on one 8.5 X 11 sheet with a wider area shown). 3. On the stormwater plans near P-8 (X-4) the ditch is re -located in a different position than shown on the 401 plans inset 14 on CW 101 page 8. Please explain. 4. The relocated ditch (X-4) near P-8 is shown within 10 feet of the jurisdictional wetland. The ditch detail shows a 3' deep ditch with 4:1 slopes and additional 10:1 slopes, how will this not impact additional wetlands in that area? In additional, will the new ditch being closer to the wetland have a potential to drain/impact it? 5. The relocated P-8 ditch dead ends, please show a cross section profile view of that area and how close it will come to the adjacent wetland. 6. Please show on the detail sheet for P-7 how the ditch will cross the wetland and align with the culvert under Atlantic Avenue including the inverts of the pipes with topos of the surrounding wetlands. Please explain how the surrounding wetlands not be potential drained/impacted. 7. It is difficult to tell what ditches are to be impacted in the detailed insets. Please show both the wetland and ditch impacts on the same detail sheet and use transparent colors to show what is underneath. It is difficult to see what is being impacted under the solid colored lines, if anything is being impacted. If you need to make the detail on a larger sheet (up to 11 X17) then please do so. Topo lines (greyed) would also help. (i.e. wetland H impacts plus the ditches to be impacted in and around wetland H.) 8. Wetland H, how do you propose to keep the remaining 0.185 acres of wetland viable? I have reviewed the cross sections provided in the application and still do not understand how that wetland will remain viable. Potential location for a wetland monitoring well? 9. On the stormwater plans, some of the proposed ditches are shown to be lower than the adjacent wetland. Please show how these will not have potential draining of these wetlands. 10. For the proposed mitigation area, the Division would suggest that the ditches be filled permanently verses using flashboard risers as they are temporary in nature and can be lowered by anyone at any time. 11. For mitigation, has any additional wetlands surrounding the mitigation site been proposed for a conservation easement? I think this covers it. Thanks! Joanne Steenhuis Transportation Permitting Branch Divisions 3 & 6 Department of Environmental Quality Wilmington Regional Office 127 Cardinal Drive Ext. Wilmington, NC 28405 Direct phone 910.796.7306 Cell 910.308.4021 Joanne. Steenhuis@,ncdenr.gov **E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.**