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Home My WebLink AboutWPO201400071 Review Comments WPO VSMP 2014-12-15� pF��{A{--��i k7n COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902 -4596 Phone (434) 296 -5832 Fax (434) 972 -4126 Project: Old Trail Village, Block 12, Phase 1 Plan preparer: Roudabush, Gale & Assoc, Inc [914 Monticello Road, Charlottesville, VA 22902, cmulligan @roudabush.com] Owner or rep.: March Mountain Properties LLC [1005 Heathercroft Circle, Suite 100] Dave Brockman, dave@oldtrailvilla ee com Plan received date: 15 May 2014, block 15 (Rev. 1, bleep 15) (Vt submittal, block 12) 15 Aug 2014 15 Aug 2014 (Rev. 1, block 12) 20 Nov 2014 (Phase 1); 12 Dec 2014 (Meeting/e- review comment response) Date of comments: (Rev. 1, bleek 15) 30 June 2014 (block 15) 29Sep 2014 (b1eek 13, 12) (Rev. 1, block 12) 15 December 2014 (Phase 1) - Approved (block 15 road) 15 December 2014 (Phase 1) — Approved (WP0201300021, WP0201400071 Reviewer: John Anderson Block 15 and 12 WPO plan comments were combined in prior correspondence. Block 15 comments are removed from this correspondence, except as they reference block 15 phase 1 road plan. WPO plans are not approved for block 15 phase 2 road plan. This review approves block 15, phase 1 road plan under elements of WP0201300021 and WP0201400071. Primarily, this correspondence approves block 12, phase 1 (Lots 1 -7). SWPPP: Comments have been addressed, including block 15 items #1 -34, 29- Sep -14. Item #35, a. -f will be checked against future WPO plans. Apart from this, SWPPP comments for blocks 12 and 15 have been addressed. Alteration of block 15 subdivision/road plans, or block 12 (future phases) may yield additional SWPPP comments. Bonds: Certain block 12, phase 1, ESC measures are bonded under WP0201300021. Likewise, block 15, phase 1 road plan storm runoff ESC /SWM facilities are bonded under WP0201300021. A few block 15 phase 1 road plan ESC measures are bonded with (this) WP0201400071, as practical alternative. This review does not approve block 15 phase 2 road plan. A. Stormwater Pollution Prevention Plan —block 15 (SWPPP) & block 12 The SWPPP content requirements can be found in County Code section 17 -405. A SWPPP must contain (1) a PPP, (2) an ESCP, (3) a SWMP, and (4) any TMDL measures necessary. Ref. County -View for prior comments. Comments removed for simplicity, except item #35, 29- Sep -14 review, which appears as items a. -g., below- SWPPP Plan, block 15: [a. -f, RESERVED] a. Label Court Mont Way. b. Receiving Waters — revise "runoff from this entire area currently drains into Slabtown Creek via an existing sediment basin," since not strictly accurate. c. Receiving Waters — revise "As such, it will provide full containment for the denuded areas," since not strictly accurate. Limited areas drain east to sediment traps. d. Stormwater Management — revise "Approved plans (WP0201300021) shall function as the SWM facility for this development," since WP0201300021 may not provide full SWM control (see SWM, comment #3, below). e. Compare Porta john locations: Potential Pollutant Sources, 2 °d paragraph, with Installation and Maintenance, 7th paragraph — revise for consistency. f. Include ESC legend. (see SWPPP plan, block 12, Aug -15, 2014) g. [ For SWPPP plan, block 12, have design engineer sign plan ] (Rev. 1) Comment addressed. Engineering Review Comments Page 2 of 4 B. VSMP: SWPPP: Stormwater Management and Mitigation Plan —block 15 (WPO201400047) — The stormwater management plan requirements can be found in County Code section 17 -403. — Ref. County-View for SWMprior comments, items #1 -3, 29- Sep -14 review: (Rev. 1) #1 -3 Addressed- 1 . Re£ prior comments — Addressed. 2. Re£ prior comments — Addressed. 3. Ref. prior comments — Addressed. New: 4. Ref. prior comment —(Rev. 1) Addressed. RGA response, 20- Nov -14: "The proposed impervious area for Block 12, Phase 1 = 33,308 s.f., which is less than the 46,286 s.f. of impervious area that was allowed with WP020130002l ." 5. Ref. prior comment —(Rev. 1) Addressed. RGA response, 20 -Nov: "All of the area for Block 12, Phase 1 is covered under WP0201300021." 6. Ref. prior comment — Comment applies to block 15 [reserved]. 7. With revised WPO201400047, please furnish existing conditions with soil types/boundaries. (Rev. 1) Comment addressed. 8. Furnish pre- /post - development drainage area maps. RGA response: since impervious area proposed with the Block 12, Phase 1 plans is covered under the WPO201300021 plans, pre- /post - development drainage area maps unnecessary for WPO plans for Block 12, Phase 1. (Rev. 1) Comment addressed. 9. Propose mitigation for stream buffer impacts (utility work; sheet 3) - §17- 406 — Applies to block 15 [reserved] Note: 326 ft2 stream buffer impact proposed under block 15 phase 1 road plan will be (must be) mitigated under (future) block 15 phase 2 road plan stream buffer impact Mitigation Plan. C. VSMP: SWPPP: Erosion Control Plan —block 15 (WPO201400047) — The erosion control plan content requirements can be found in County Code section 17 -402. [RESERVED] 1. Items 1 -17, and New 8 -19 - /see prior comments. A. VSMP: SWPPP and Pollution Prevention Plan —block 12 (WP020140007t) — §17-405 (The Virginia stormwater management program, stormwater pollution prevention plan application and documents Refer to block 15, above: Comments virtually identical. Oct -2 meeting scheduled for questions. B. VSMP: SWPPP: Stormwater Management Plan —block 12 (WPO201400071): Refer to block 15, above. WPO201400047 SWM comments (2. -8.) apply to blocks 15 and 12, equally. C. VSMP: SWPPP: Erosion Control Plan —block 12 (WPO201400071) —The erosion control plan content requirements can be found in County Code section 17 -402. 1. Provide diversion dike or ditch, west side of modified sediment basin, sheet 3. (Rev. 1) Addressed 2. Revise CE to paved CE with wash rack, sheet 2. (Rev. 1) Addressed. Engineering Review Comments Page 3 of 4 3. Revise 668' contour to 666', lower right quadrant, sheet 2, near Future Development Area label. (Rev. 1) Addressed. 4. Label all drainage easements beyond public RW PRIVATE. Comment applies to blocks 12 and 15 — please check labels carefully (existing /modified sediment basin, Rowcross St, Court Mont Way, Private alley `A'), and please accept apology for error. This will be a standard item of review with future VSMP plans. Easements beyond public RW are Private. (§ 18- 32.7.4.2.a.1.) (Rev. 1) Addressed. The VSMP permit application and plans are approved for block 12, phase 1, Lots 1 -7. This approval grants VSMP permit coverage to block 15, phase 1 road plan development, which is a limited portion of Claremont Lane that must be built to provide safe, convenient access to block 12, lots 1 -7. Disturbed area for block 12, phase 1, Lots 1 -7 and block 15, phase 1 road plan is included with VAR10043 indexed map dated 9/29/14; therefore, modification of VAR10043 is not required. There are no additional DEQ or County fees due. Please revise sketch showing VSMP Permit VAR100043 with future development, including revising boundaries to exclude any areas not covered by an approved SWM plan. ACCD will notify DEQ of any change in area of coverage under General VPDES Permit VAR10043. SKETCH SHOWWG 1' = 500' VSMP PERMIT VAR100043 VAMOOM GLOM 67,2% 27,28,29&J5 To U6 Pmd PROJECT AREA �. 9LOIX3 13R FIO 17fi OLD TRAIL VILLAGE SEPTEMBER 29, 2014 Cld T1 ZMA Lk b PROJECT AREA IS 86.5 ACRES AND \ INCLUDES BLOCKS AT OLD TRAIL VILLAGE CURRENTLY COVERED BY APPROVED WPO PLANS THAT HAVE BOTH EROSION CONIROL� AND WATER QUALITY MEASURES. \ e V Ni 6Pemq VAMOOM GLOM 67,2% 27,28,29&J5 To U6 Pmd rM.•iy ;. R: �. 9LOIX3 13R FIO 17fi limits Of W t _ ` , BASIN APFA W01 o e �. Y e oa s tI AND ri � WIN AREA LAD Of WMWiRwa is _\ Process: WPO bond estimate request has been made, estimate prepared. The County's Management Analyst will prepare bond agreement forms, which will need to be completed by the owner and submitted along with cash, certificates or sureties for the amounts specified. The agreements will need to be approved and signed by the County Attorney and County Engineer. This may take 2 -4 weeks to obtain all the correct signatures and forms. Stormwater Management Facilities Maintenance agreements will also need to be completed and recorded. The County's Management Analyst or other staff will prepare the forms and check for ownership and signature information. The completed forms will need to be submitted along with court recording fees. Once bond process is complete, Applicant will need to request a pre - construction conference by completing a form, and pay the remainder of the application fee (NA). The form identifies the contractor and responsible land disturber, Engineering Review Comments Page 4 of 4 and the fee remaining to be paid (NA). This will be checked by county staff, and upon approval, a pre - construction conference will be scheduled with the County inspector. At the pre - construction conference, should everything proceed satisfactorily, a grading permit will be issued by the County so that work may begin. County forms can be found on the county website forms center under engineering; htt-p://www.albemarle.oriz/dentforms.asp?departinent--cdenjZMMo File: WPO201400071 -OTV -block 12- 121514.doc