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Home My WebLink AboutWPO201800071 Approval - County 2018-11-29COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 VSMP Permit Plan Review Project title: Stalfort Residence — VSMP Project file number: WP0201800071 Plan preparer: Alan G. Franklin, PE, Waterstreet Studio / 418 E. Main St. Charlottesville, VA 22902 (alan(&alanfranklinpe.com) Owner or rep.: John A. Stalfort, III or Holly S. Gineane (stalfort(a@=ail.com) 270 Blue Springs Lane, Charlottesville, VA 22903 James Tanner, 1009 E. High St. Charlottesville, VA 22902 (j ames@shelterltd. com) Plan received date: 18 Sep 2018 (Rev. 1) 29 Oct 2018 (.PDF) Date of comments: 23 Oct 2018 (Rev. 1) 29 Nov 2018 —Approved(pending recordation SWM Forest/Open Space Easement) Reviewers: John Anderson County Code section 17-410 and Virginia Code §62.1-44.15:34 requires the VSMP authority to act on any VSMP permit by issuing a project approval or denial. This project is approved ep nding receipt of recordation of Deed of Dedication of SWM Forest /Open Space Easement. A. Stormwater Pollution Prevention Plan (SWPPP) The SWPPP content requirements can be found in County Code section 17-405. A SWPPP must contain (1) a PPP, (2) an ESOP, (3) a SWMP, and (4) any TMDL measures necessary. Please submit single-family residence SWPPP (use county template), Link: httt)://www.albemarle.org/ul)load/imaees/forms center/departments/Community Develonment/forms/Enein eering_and _WPO_Forms/Stormwater _Pollution _ Prevention_ Plan_ SWPPP Single Family template.pdf.) (Rev. 1) Comment withdrawn; review error. Included with initial. Engineering recommends minor edits to ESC measure removal date (Sec. 4, SWPPP). Also, Certification signature on cover is required. Please submit 2 copies of revised, signed d single-family SWPPP to CDD front desk, with pre -construction request. B. Pollution Prevention Plan (PPP) The PPP content requirements can be found in County Code section 17-404. 1. Anticipate addressed via SWPPP. (Rev. 1) Addressed. Ref. Sec. 5 single-family SWPPP. C. Stormwater Management Plan (SWMP) (Rev. 1) All prior SWMP comments Addressed. VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a SWMP. This plan is approved. Revise Title Sheet (Plan) title to: VSMP /WP0201800071, Stalfort Residence. Title Sheet contains more information than should be presented on a Title Sheet; please distribute details across additional sheets. Recommend Title sheet with additional general information (see Attached recent plan title sheet for unrelated project); ESC Plan /pipes; Site Lao that includes drainage /culvert pipes. Ref. Attached sample title sheet: provide additional, general parcel /zoning information. (Call if questions). Engineering Review Comments Page 2 of 3 SW-02: VaRRM .xls lists 16.38 Ac. in SWM Forest /Open Space. Attached sample .xls indicate less acreage in permanent easement as an alternative approach. If consider soil groups A + B, the range of acreage required =4.75 to 5.85 Ac., depending on whether Applicant has applied for a building permit, or not. If Applicant has applied for a single-family dwelling building permit, then drive length beyond existing drive from construction entrance to broad parking area may be excluded as impervious area. Engineering estimates area = 800'(+) x 12' (0.22 Ac.). Engineering has not examined VaRRM .xls post -development project land cover table values beyond this, but it may also be possible to remove portion of turf land cover if shoulder section of new drive is included in the current land cover table and if there is a building permit application on file with Albemarle. Applicant may place 16.38 Ac. in Forest /Open Space Easement; if so, proposed design nets a surplus (3.61 lb.) phosphorus credit, but use of credits may be limited by overall restrictions if 16.38 Ac. is in SWM Forest /Open Space easement. Related to 4, above: SWM Forest /Open Space Easement plat with Deed of Dedication is required prior to VSMP Plan approval. Find Easement Application at: http://www.albemarle.org/upload/images/forms center/departments/Community_ Development/forms/apTlic ations/Easement_ Plat_& Checklist.pdf. Note: Less acreage in easement may ease somewhat the expense of site survey required to prepare easement plat to accompany a Deed of Dedication. Engineering will format a Deed of Dedication template for Applicant, once SWM Facility Maintenance Agreement is recorded (please see Process section, below). Level spreaders (LS) used to trim velocity prior to discharge to SWM Forest /Open Space are an element of a stormwater best management practice (VA DEQ Stormwater Design Specification No. 2: Sheet Flow to a Vegetated Filter Strip or Conserved Open Space); for this reason: a. Include VSMH (2013) 9-C.3.0., Sheet Flow to Vegetated Filter Areas and Conserved Open Space: O&M Checklist (Attached). b. Include following Note on Plans: `Construction of the gravel diaphragm or engineered level spreader shall not commence until the contributing drainage area has been stabilized and perimeter E&S controls have been removed and cleaned out.' (BMP Clearinghouse VA DEQ Stormwater Design Specification No. 2; pg. 17). c. Provide (Typ.) LS detail: include Fig. 2.6 (Clearinghouse Spec. No. 2; pg. 8). d. Provide LS dimensions (L x W x H) and material type: LS 1, 2, 3, 4, to aid construction and (future) compliance inspections. e. Include plan Note acknowledging SWM Facility As -built requirement/s, including Construction Record Drawings (each LS). f. Include text of WPO NSMP Construction Record Drawings Policy on Plans (Link: http://www.albemarle.org/upload/images/forms_center/departments/Community Development/for ms/Engineering and _WPO_Forms/WPO_VSMP_Construction _ Record Drawings Policy_23May 2014.pdf). g. Submit VSWM NESCP Plan bond estimate request form (if not already submitted, Link: https://www. google. com/url?q=https://www.albemarle.org/upload/images/forms_center/departmen ts/Community_Development/forms/bonds/Bond_ Request_ to Establish a Bond.pdf&sa—U&ved— OahUKEwiX4d-i25 zeAhV ikeAKHYDbAxkQF ggGMAE&client—internal-uds- cse&cx-013641561590022973988:g3cwjsrdbli&usg—AOvVaw07QB-uOuTu_Fa 5WrzNXdB). SWM Quantity Control: provide energy balance equation/s for proposed development, each outfall point — please see 9VAC25-870-66.B.3. SWM Facility Maintenance Agreement and a Deed of Dedication of SWM Forest /Open Space Easement (with Easement Plat) are required prior to VMSP Plan approval. SWM Plan and ESC plan bonds are required prior to project receiving a grading permit. D. Erosion and Sediment Control Plan (ESCP) (Rev. 1) All prior ESCP comments Addressed. Virginia Code §62.1-44.15:55 requires the VESCP authority to approve or disapprove an ESCP. This plan is approved. Engineering Review Comments Page 3 of 3 1. Label ditches upslope of Culverts 1, 2, 3, 4 as Ditches 1, 2, 3, 4, for ease of reference during construction inspection. 2. Recommend labels /leader lines (plan view) to clarify that Ditches 1, 2, 3, 4, are to receive American Excelsior Curlex 1 Matting. 3. Provide check dams as an ESC measure between culvert pipes; ref. VESCH, 3' Edition, 1992, for technical and design details (check dams, a temp ESC measure, will be removed once upslope areas are stabilized). 4. Revise Culvert 4 data on current title sheet (possible cut -paste error). 5. Additional comments possible once ESC Notes /design /measures shown on a separate plan sheet. Please re£ county email (11/29/2018 9:20 AM) request for four (4) full-size copies of the VSMP plan with 10-29-18 PE -seal date and 10-29-18 title sheet date, at your earliest convenience. Process • Bond estimate is in process. J. Anderson to provide bond amounts to Ana Kilmer by 5pm, 11/30. • SWM Forest /Open Space Easement plat is under review. Applicant to address any review comments. • SWM Facility Maintenance Agreement is in process —Applicant has contacted /is working with Ana Kilmer. • Once Agreement is recorded (by County) and easement plat review complete, a Deed of Dedication (template) for LS and Forest /Open Space Easement is formatted by Engineering, emailed to Applicant. • Applicant returns notarized /signed Deed of Dedication, and notarized /signed plat; Attn. Andy Reitelbach, Planning Division • Planning Div. routes deed and copy of original plat to County Attorney's Office /County Executive for signatures. Planning will notify Applicant to pick up approved original plat and deed for recordation. • Once deed is recorded and bonds are posted, Applicant may request a preconstruction meeting; link below by submitting pre -con meeting request form with 594 (remainder of county -portion of VSMP permit fee). • Engineering Division Inspector will reach out to Applicant to schedule a pre -construction meeting, typically within 5 - 7 business days of receipt of pre -con meeting request form. • At pre -construction, Applicant /GC receive Grading Permit and stamped copies of approved VSMP plan /SWPPP. • Barring any unforeseen issue at pre -construction, grading may commence, immediately. • (Please acquire any VDH-septic, DEQ-well, and county building permits, per respective agency processes.) Link: preconstruction request form: htW://www.albemarle.orgLupload/images/forms center/departments/Community Development/forms/Engineering_a nd_WPO_Forms/WPO_ Pre -Construction _ Meeting_ and Permit_Request.pdf Thanks for your patience —please call if any questions. 434.296-5832-0069, or janderson2@albemarle.org WPO201800071 Stalfort Residence 112918 Approval.doc