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HomeMy WebLinkAboutWPO201400094 Review Comments WPO VSMP 2015-03-13COUNTY OF ALBEMARLE is Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902 -4596 Phone (434) 296 -5832 Fax (434) 972 -4126 Project: Whittington — Phase B WPO- 2014 -00094 Plan preparer: Dominion Engineering & Design, LLC for Piedmont Neighborhoods, LP Date of comments: Supplemental comments; 13 Mar 2015 Reviewer: Glenn Brooks, County Engineer Not having an acceptable concept on these plans through a second review suggests this development might be headed toward an amended zoning if the old zoning plan cannot be effectively implemented. Below I will try to provide an overall perspective. Stormwater Management Plan: As we discussed at our last meeting, you have really taken the hardest path to implementing an old rezoning plan. The county has a handful of these older rezoning plans, and getting final plans approved in accord with them is difficult. The easiest path to approval of final plans is to implement the rezoning plan. The next alternative is to amend the zoning with a new concept plan which is easier to implement. Next, it is theoretically acceptable to use a new plan with the new VSMP criteria, and process a zoning variation on the grounds that it is an improvement. The last and worst option, is to try a new plan, while simultaneous trying to follow the old zoning plan, and prove equivalency through computations. This is the option you have taken. We are not yet able to decipher your alternative concept, and have real trouble even piecing together the complete picture. It is essential that you provide a plan sheet showing the entire development proposal, stormwater facilities and drainage areas used for stormwater management and water quality computations to illustrate your concept. We must be able to compare it with the ZMA plan. Please finalize this overall approach with the county before creating detailed plans. Erosion and Sediment Control Plan: At our last meeting, we spoke extensively about the proposed phasing on the erosion control plan. However, with this revision, we are still not in agreement with the phasing. This seems to be the primary source of difficulties in the county review. This set of plans is Phase B. It is a different geographic location than phase A, which is already approved and under construction. This phasing works. The phases 1 and 2 of phase B plans appear to be trying to the reduce sediment trap and basin sizes. This does not work. Phase 1 will essentially be removed from the plan set or ignored. Phase 2 will be the effective erosion control plan. All facilities must be sized for the full drainage area and disturbance, which appears to be shown in phase 2. Care should be taken not to grade such that drainage carries through more than three lots. Mitigation Plan: If you are trying something other than the usual mitigation, please run it by the county before submitting plans. The usual mitigation is; (1) avoidance, (2) plantings in the project buffers, (3) stream restorations within the project, or (4) additional water quality measures. Use the CBLAD Buffer Guidance Manual. File: Whittington Phase B WP0201400094 supplement.doc