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Home My WebLink AboutWPO201300050 Review Comments Stormwater Management Plan 2014-01-07Michelle Roberge From: Michelle Roberge Sent: Tuesday, January 07, 2014 10:11 AM To: Frank Pohl; David Anhold Subject: RE: WAHS Biofilter Plans Hi Frank, Glenn just passed them on to me. I approved all 4 plans. - Michelle From: Frank Pohl Sent: Tuesday, January 07, 2014 9:25 AM To: David Anhold; Michelle Roberge Subject: RE: WAHS Biofilter Plans Michelle, Good morning. Is there a chance these plans can be signed /approved today? Our contractor would like to schedule his E &S pre- construction meeting. Thanks, Frank Frank V. Pohl, PE, LEED AP BD +c Senior Project Manager Office of Facilities Development County of Albemarle 401 McIntire Road, Room 228 Charlottesville, Virginia 22902 -4596 T (434) 872 -4501 ext. 9 -7914 F (434) 972 -4091 C (434) 466 -7458 From: David Anhold [mailto:danhold(a)hughes.net] Sent: Monday, January 06, 2014 2:13 PM To: Michelle Roberge Cc: Frank Pohl Subject: WAHS Biofilter Plans Michelle, Just a heads -up. At 12:30 1 dropped off 4 sets of plans for your signature along with one signed and sealed copy of the Drainage Report. David ANHOLD ASSOCIATES Landscape Architecture Site Design Planning 8311 Rockfish Gap Trnpk. Greenwood, VA 22943 ANHOLDLA.COM 434 - 882 -3420 �RGICn4' COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902 WPO Plan Review Project: Western Albemarle High School SWM Improvements Number: WP0201300050 Date Plan Received: 8/13/2013 Date of Review: 8/27/2013 Reviewer: Michelle Roberge Phone: 434 - 296 -5832 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: (Code Chapter 17, Article II) Y N X Adequate Not Adequate 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 Stormwater Management: (Code Chapter 17, Article III) Y N Adequate g Not Adequate Enough capture and treatment for on -site areas Enough detention storage for on -site areas Sealed hydrologic and hydraulic computations provided The storm manhole serves to carry runoff to biofilter, but it will need to fill up to elev. 653.20 before it is conveyed to the biofilter via 18" HDPE pipe. The riser will continue to pond water and may be a breeding ground for mosquitos. Please revise design to avoid ponding in riser. Mitigation: (Code Chapter 17, Article III) Y N n/a Adequate Not Adequate 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 Approved (please see attached Approval Fact Sheet) X Not Approved is �RGICn4' COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902 WPO Plan Review Project: Western Albemarle High School SWM Improvements Number: WP0201300050 Date: 7/23/2013 Reviewer: Michelle Roberge Phone: 434 - 296 -5832 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: (Code Chapter 17, Article II) Y N Adequate X Not Adequate 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 See notes on plan. Stormwater Management: Adequate (Code Chapter 17, Article III) Not Adequate Y N Enough capture and treatment for on -site areas Enough detention storage for on -site areas Sealed hydrologic and hydraulic computations provided SWM plan is required. State if stream is perennial or intermittent and provide stream buffer per 17 -317 (b). Look into Section 17 -318 Management of Stream Buffer. See notes on plan. Mitigation: (Code Chapter 17, Article III) Adequate Not Adequate Y N Buffers and disturbed areas adequately shown Adequate plantings at 2:1, or other mitigation provided Mitigation plan is required for channel restoration per Section 17 -322. Look into Section 17 -323 for maintenance details and Albemarle County Design Standards for mitigation requirements. Also, verify if WPO buffer is disturbed as this may add to required mitigation area. See notes on plan. 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 Approved (please see attached Approval Fact Sheet) X Not Approved is COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902 WPO Plan Review Project: Western Albemarle High School SWM Improvements Number: WPO201300050 Date Plan Received: 8/13/2013 Date of Review: 8/27/2013 Reviewer: Michelle Roberge Phone: 434-296-5832 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: (Code Chapter 17, Article II) Y N X State standards followed, and Design Standards Manual notes and details X Adequate limits and perimeter measures out of work areas X All stages protected adequately X Adequate channels Stormwater Management: (Code Chapter 17, Article III) Y N X Enough capture and treatment for on-site areas X Enough detention storage for on-site areas X Sealed hydrologic and hydraulic computations provided X The storm manhole serves to carry runoff to biofilter, but it will need to fill up to elev. 653.20 before it is conveyed to the biofilter via 18” HDPE pipe. The riser will continue to pond water and may be a breeding ground for mosquitos. Please revise design to avoid ponding in riser. Mitigation: (Code Chapter 17, Article III) 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. X Adequate Not Adequate Adequate x Not Adequate n/a Adequate Not Adequate This plan is Approved (please see attached Approval Fact Sheet) X Not Approved COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902 WPO Plan Review Project: Western Albemarle High School SWM Improvements Number: WPO201300050 Date: 7/23/2013 Reviewer: Michelle Roberge Phone: 434-296-5832 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: (Code Chapter 17, Article II) Y N X State standards followed, and Design Standards Manual notes and details X Adequate limits and perimeter measures out of work areas X All stages protected adequately X Adequate channels See notes on plan. Stormwater Management: (Code Chapter 17, Article III) Y N Enough capture and treatment for on-site areas Enough detention storage for on-site areas Sealed hydrologic and hydraulic computations provided SWM plan is required. State if stream is perennial or intermittent and provide stream buffer per 17-317 (b). Look into Section 17-318 Management of Stream Buffer. See notes on plan. Mitigation: (Code Chapter 17, Article III) Y N Buffers and disturbed areas adequately shown Adequate plantings at 2:1, or other mitigation provided Mitigation plan is required for channel restoration per Section 17-322. Look into Section 17-323 for maintenance details and Albemarle County Design Standards for mitigation requirements. Also, verify if WPO buffer is disturbed as this may add to required mitigation area. See notes on plan. 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. Adequate X Not Adequate Adequate Not Adequate Adequate Not Adequate This plan is Approved (please see attached Approval Fact Sheet) X Not Approved