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HomeMy WebLinkAbout20081811 Ver 1_401 Application_20100410l" Mostoo Salem April 19, 2010 112@1ROW[RO Public Works Department Engineering Division APR 2 1 2010 North Carolina Division of Water Quality cry ofWinsvon-sa1<m DENR. WATER'DUALRY P.O. Box 2511 401 Wetlands Unit WETtAWSARD STORM4ATER BRANCH NC 27102 1650 Mail Service Center ]d 336.727.2141 Raleigh, NC 27699-1650 F 336.727.2361 xww.ciryo(wnrg RE: Modification of 401 Water Quality Permit -DWQ Project No. 08-1811 for the road widening improvements to SR 1686 (Shattalon Drive) Forsyth County, North Carolina. City Project No. 200502. Dear Sir or Madam: Please find the enclosed copies of the Pre-Construction Notification (PCN) Impact Table, Permit drawing 2, Revised Aerial Map, and copy of the previously issued permit for the above referenced project. There will be a total of 32 linear feet (LF) of additional permanent stream impacts to an unnamed tributary to Bethabra Branch. These impacts are associated with the replacing 61 LF of existing 36" RCP with 70 LF of 42" RCP pipe and headwall. Of the 32 linear feet, 9 linear feet will be due to the extension of the existing pipe culvert and the remaining 23 LF of permanent impacts will result from Class I rip rap stabilization of the pipe outlet and stream bank. The outlet stabilization will be keyed into the stream bank and stream bed. An existing storm drainage manhole at STA 27+90 +/- will be blocked and flow diverted by pumping for temporary dewatering during the pipe installation. If you have any questions or need additional information, please call me at 747-6833. Sincerely, ENGINEERING DIVISION Aq 7r.4;(0-Ae Todd Love, P.E. Project Engineer Cc: with attachment USACOE J- C. Proposed Impacts Inventory 1. Impacts Summary 1 a. Which sections were completed below for your project (check all that apply): ? Wetlands ® Streams - tributaries ? Buffers ? Open Waters ? Pond Construction 2. Wetland Impacts If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted. 2a. 2b. 2c. 2d. 2e. 2f. Wetland impact Type of jurisdiction number- Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact Permanent (P) or (if known) DWQ - non-404, other) (acres) Temporary T ? Yes ? Corps W1 ? P ? T ? No ? DWQ ? Yes ? Corps W2 ? P ? T ? No ? DWQ ? Yes ? Corps W3 ? P ? T ? No ? DWQ ? Yes ? Corps W4 ? P ? T ? No ? DWQ ? Yes ? Corps W5 ? P ? T ? No ? DWQ ? Yes ? Corps W6 ? P ? T ? No ? DWQ 2g. Total wetland impacts 2h. Comments: 3. Stream Impacts If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this question for all stream sites impacted. 3a. 3b. 3c. 3d. 3e. 3f. 3g. Stream impact Type of impact Stream name Perennial Type of jurisdiction Average am t Impact length number - (PER) or (Corps -404. 10 re s Permanent (P) or intermittent DWQ - non-404, width (linear feet) Temporary (T) (INT)? other) (feet) S1 ®P ®T Culvert Bethabra Branch ® PER ? INT ® Corps ® DWQ 8.0 117(perm) 25 (temp) S2 ® P ® T Culvert UT1 Tributary to Bethabra Branch ? PER ® INT ? Corps ® DWQ 2.5 32(perm) ? PER ? Corps S3 ? P ? T ? INT ? DWQ - ? PER [:1 Corps 1 T S4 ? P F ? INT ? DWQ - ? PER El Corps ? P F 1 T S5 ? INT ? DWQ - F-1 PER ? Corps 1 T ? P F S6 ? INT ? DWQ 149(perm) 3h. Total stream and tributary impacts 25 (temp) 3i. Comments: Temporary impacts are due to temporary erosion control measures at Site 1. Permanent impacts at the sites .,P H .P tn mmnnsPr1 culvert installation at Site 1 and Pipe Extension and Replacement at Site 2. Page 5 of 11 PCN Form - Version 1.3 December 10, 2008 Version VIII` c z o 4 ? N O m E , I I ? aaa Da s N k ? e? f S J Jy 8 1 t ;l = e 1 I P g 1 ' F O n W a_ O a N & ry a B p- 11 1 ?I 1 8 11 Aj ?R o ? Bj $ t IY? I ®/I I I II I F y e Ij q I r7 I II ? I II gI 1?I ?1 I ?I I ?I I p bl 1? } I I N ?l}i I a CO I? to I N a II i ? h II? J ?? II o it N I I I I I ? I I I L I ? I 4_°+ 9 ? J Ua y 41 mo?nGy E N i N 0 z N F= O'Y x Y h ggrc O 3 ?' o CITY ROADWAY PROJ. NO. 200502 NOT TO DATE SCALE Ev 4/15/1 SHATTALON DRIVE AERIAL MAP AERIAL MAP O