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Home My WebLink AboutWPO201300021 Correspondence 2013-03-26 440V ALk4 olt '11.10r COUNTY OF ALBEMARLE Department of Community Development •4:_t 401 McIntire Road Charlottesville,Virginia 22902 WPO Plan Review . Project: 0(AT''4 ( Vt(jG52. te1oCt<- 14 Number: W f 0 ao l 3•- ono 21 Date: 7/jv(i3 Reviewer: ti:ci►ne( kos(ow Phone: II'S -a( b-- St34 mt. 3 2-1-1 This is an abbreviated review comment notice. County engineering staff is available every Thursday afternoon to discuss details of review. To schedule,please call your reviewer for an appointment Erosion & Sediment Control: Adequate (Code Chapter 17,Article It) 1/Not Adequate Y N ✓ State standards followed,and Design Standards Manual notes and details Adequate limits and perimeter measures out of work areas All stages protected adequately ,� ✓ Adequate channels — e cc 4 h. aa(dre s (no i{15 w f e f pl ) La�N,e.- «.-1 � �o(�e G .15 A. lot e to') (/, Stormwater Management: 3 ' s .�.t `y' F Adequate (Code Chapter 17,Article III) Not Adequate Y N L/' Enough capture and treatment for on-site areas Enough detention storage for on-site areas Cal a ✓ Sealed hydrologic and hydraulic computations provided 5 +I ? ati;.sue a /AI . Mitigation: Ade uate (Code Chapter 17,Article III) q Not Adequate Y N Buffers and disturbed areas adequately shown Adequate plantings at 2:1,or other mitigation provided -This-review-attempts-to-encompass the-larger compliance-questions County-staff-does-not-assume responsibility for any calculation or plan details, and cannot cover the intricacies of every plan submitted. Each plan and calculation must have a professional seal and signature to assume these responsibilities. This plan is Approved (please see attached Approval Fact Sheet) Not Approved PHONE(434)2934251 *ear+' (434)9770205 t FAX(434)296220 ROUDABUSH,GALE&ASSOC.,INC. INFOOROUDABUSH.COM LAND SURVEYING A PROFESSIONAL CORPORATION ENG!URVEYG 914 MONTICELLO ROAD LAND PLANNING CHARLOTTESVILLE.VIRGINIA 22902 J.THOMAS GALE.L.S. WILLIAM S.ROUDABUSH.L.S. MARILYNN R.GALE.L.S. WILLIAM J.LEDBETTER.LS EDWARD D.CAMPBELL III.LS. Project: Old Trail Village Block 14 Plan Preparer: Roudabush Gale &Associates, Inc. Owner or Rep. March Mountain Properties, LLC Date of Comments: 14 May, 2013 Reviewer: Michael Koslow The plans for this development have been revised to incorporate the changes requested in the comments dated May 14, 2013 A) Application Information 1) The requirement for a stormwater management agreement is acknowledged. 2) The requirement for payment of the pro-rated share to Lickinghole Basin is acknowledged. B) Title Information 1) The title sheet is prepared with a professional seal, signed by an Engineer. C) Existing Conditions Information: 1) The date(s) of existing topography have been added at the top of the analysis sheet. D) Erosion and Sediment Control(ESC) Plan 1) The adjacent areas section of the narrative has been expanded. 2) The references to WPO-2011-0013 have been revised to WPO-2012-0013 3) A note has been added indicating the contractor parking, staging, stockpiling areas will be within the limits of disturbance. 4) The Albemarle County paved construction entrance detail has been added to the E&S detail sheet beneath the VA-ESC entrance detail. 5) Dust control has been added to the narrative, plan, and legend. 6) The soil boundaries and identifiers are indicated on the plans. 7) Silt fence is to be installed after the berm is constructed along the contours of the proposed berm. 8) The basin calculations have been performed to meet VA 10.1-603.4(7) and a receiving channel analysis is not required. 9) The invert for the dewatering device has been revised. 10)A note has been added to the sediment basin schematic indicating the riser, and anchor is to be utilized. 11)A note has,been added to the sediment basin schematic indicating the existing trash rack is to be utilized. 12)The calculations for the dewatering orifice have been added. Using an 8"orifice will allow the basin to drain faster than the regulations permit. 13)The length of baffle has been increased. E) Stormwater Mana tent Plan 1) A view of the e "ing topography has been added indicat' 19g all the area draining to the receiving channel, and the type of cover has been added, 2) The proposed topography, drainage divides, hydrologic coefficients were already on the plans. 3) A low berm has been added to increase the length/width ratio in the bottom of the bioretention basin. 4) The 10, and 100 year high-water elevations have been added to the schematic detail, indicating 1'+ freeboard for the 100-year storm. 5) The existing berm is not to be disturbed. 6) A conical, manufactured trash-rack has been specified. 7) The dimensions of the proposed riser has been indicated at 48". 8) The existing emergency spillway was already located in"cut". 9) Additional contour label have been added to the grading details. 10)The surface area/treatment calculations have been revised by Michael, and added to the plans. 11)Geotech fabric has been added above the choking layer on the details. 12)The cleanout spacing has been reduced to 50' F) Stormwater Management Computations: 1) The changes to the impervious area have been made to the routing calculations, and are indicated on the analysis sheet. Best Regards, Thomas P. Riegel, P.E. Michael Koslow From: Michael Koslow Sent: Tuesday, May 14, 2013 4:14 PM To: 'Bill Ledbetter'; Nathan Morris Cc: triegel @egsassoc.com;jgentry @egsassoc.com Subject: RE: Old Trail Block 14-WP02012-00013 Attachments: CDDE1_ESC_SWM_MAK Old_Trail_Village_Blockl4 WP0201300021.doc Bill et al, Please see attached comments for the plans. I'll be out of the office until Monday, but will be able to setup a meeting next Thursday if requested to go through them (or available over the phone starting Monday). Cordially, Michael Michael Koslow, PE County of Albemarle Community Development Department 401 McIntire Road Charlottesville,VA 22902 434-296-5832 ext. 3297 434-972-4126 (fax) mkoslow @albemarle.org From: Bill Ledbetter [mailto:billCa�roudabush.com] Sent: Tuesday, May 07, 2013 12:52 PM To: Nathan Morris; Michael Koslow Cc: triegel @egsassoc.com; igentry@egsassoc.com Subject: RE: Old Trail Block 14 -WP02012-00013 Michael, You can call me with questions and if I can't answer them I will relay them to Tom Riegel/EGS who did the plan for us. Bill Bill Ledbetter Roudabush, Gale and Associates 914 Monticello Road Charlottesville, Virginia 22902 434-977-0205 434-296-5220 fax From: Nathan Morris Sent: Tuesday, May 07, 2013 12:49 PM To: Michael Koslow Cc: Bill Ledbetter Subject: RE: Old Trail Block 14 -WP02012-00013 Bill, copying me would be awesome. 1 Thanks. Nathan Morris Roudabush, Gale and Associates 914 Monticello Road Charlottesville, Virginia 22901 Phone: (434)977-0205 Fax: (434)296-5220 From: Michael Koslow [mailto:mkoslow@ialbemarle.orct] Sent: Tuesday, May 07, 2013 12:42 PM To: Nathan Morris Subject: RE: Old Trail Block 14 -WPO2012-00013 Hi Nathan, I did—am in the middle of reviewing them now in lieu of the plans submitted in March. If/when I have questions about the stormwater management, who should I contact? Thanks, Michael Michael Koslow, PE County of Albemarle Community Development Department 401 McIntire Road Charlottesville,VA 22902 434-296-5832 ext.3297 434-972-4126 (fax) mkoslow @albemarle.org From: Nathan Morris [mailto:nmorris@ roudabush.com] Sent: Tuesday, May 07, 2013 12:29 PM To: Michael Koslow Subject: Old Trail Block 14 -WPO2012-00013 Hi Michael, Just checking to make sure you got the new plan sets we dropped off for you on Friday (the new sets include the on-site measures). Thanks! Nathan Morris Roudabush, Gale and Associates 914 Monticello Road Charlottesville, Virginia 22901 Phone: (434)977-0205 Fax: (434)296-5220 2