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HomeMy WebLinkAboutWPO201400086 Review Comments WPO VSMP 2014-11-07� OF AL ,. vIRGI1`IZP COUNTY 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: Foothill Crossing Phase IV & V Project file number: WPO- 2014 -00086 Plan preparer: Collins Engineering Owner or rep.: Foothill Crossing, Inc. Plan received date: 15 October 2014 Date of comments: 7 November 2014 Reviewers: Justin Deel 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 denied. The rationale is given in the comments below. The application may be resubmitted for approval if all of the items below are satisfactorily addressed. The VSMP application content requirements can be found in County Code section 17 -401. 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. 1. Please use the standard template from the county website. 2. Provide SWPPP documents (sheets 13 -20) as a stand -alone package. Do not include them as part of the road plan package. 3. An operator must be named, and must sign the certification statement and applications. If there is no designated contractor or project manager, it should be the owner of the property B. Pollution Prevention Plan (PPP) The PPP content requirements can be found in County Code section 17 -404. 1. Provide a PPP containing the elements and details of measures to minimize the discharge of pollutants as outlined in Albemarle County section 14 -404. (Part of template above) C. Stormwater Management Plan (SWMP) VSMP Regulation 9VAC25- 870 -108 requires the VSMP authority to approve or disapprove a SWMP. This plan is disapproved, and the reasons are provided in the comments below. The stormwater management plan content requirements can be found in County Code section 17 -403. 1. Provide SWMP in accordance with new criteria. This project is not considered grandfathered, therefore type IIC criteria is not applicable. In order to have been considered grandfathered, you would have needed an approved SWPPP for phases IV and V before July 1, 2014 (9VAC25 -870- 47). A valid SWPPP would need to have included an approved erosion and sediment control plan, and an approved stormwater management plan for the entire area. This was not the case. Engineering Review Comments Page 2 of 3 D. Erosion and Sediment Control Plan (ESCP) Virginia Code §62.1- 44.15:55 requires the VESCP authority to approve or disapprove an ESCP. This plan is disapproved, and the reasons are provided in the comments below. The erosion control plan content requirements can be found in County Code section 17 -402. 1. Remove "dashes" from purpose statement in narrative. These are confusing when combined with the + and = signs. The narrative should reference only the area to be disturbed with this plan for phase IV and V. 2. Update topographic information to show all existing features. This topography does not appear accurate adjoining phase 3, where all lots have been graded, and at the road connection, where a large stockpile area currently exists. If basins from prior phases are to be built, provide as -built information for the basins. Prior design information is not adequate. 3. Please remove all prior plan information that will not be approved with this plan. This plan is very confusing, showing previous phases E &SC drainage areas and facilities. The prior plan was not actually implemented accurately in the field. The long diversion was never properly in place, and sediment trap 2 does not exist. Remove all reference to previous E &SC that will not be a part of Phases IV & V. 4. Diversion dikes that traverse the site are too long and winding and will be inadequate. Provide additional sediment traps instead. (The long diversion to avoid traps did not work in prior phases.) 5. Proposed grading for Sediment Basin 3 extends into WPO buffer. Eliminate buffer disturbances, or provide convincing evidence that such disturbances are truly unavoidable, which requires approval from WPO Program Authority and a mitigation plan. 6. Label WPO buffer limits. 7. Show and label all existing easements. 8. Provide emergency spillways for proposed sediment basins. 9. Make it more clear that any diversion dikes are to extend to stone outfalls at basins. This did not occur in prior phases. 10. Extend stone outfalls to basin floors. 11. Correct Sediment Basin 1 dimensions (plan view) on Sheet 20. 12. The use of baffles is to be avoided. Provide the proper basin dimensions. Baffles were not installed in prior phases 13. Provide actual sections, to scale, for proposed sediment basin details, showing both existing and proposed grades. Include accurate depictions of structures. Show crest of riser as elevation of top, rather than top of anti -vortex device. 14. Show dewatering orifice elevations and diameters in sediment basin details. 15. Correct title of Sediment Basin 1 design table (currently refers to Sediment Basin #4). 16. Provide paved construction entrance detail. 17. Please remove North arrow from middle of Sediment Basin 1 on Sheets 18 and 20. The VSMP permit application and all plans may be resubmitted for approval when all comments have been satisfactorily addressed. For re- submittals please provide 2 copies of the complete permit package with a completed application form. Engineering plan review staff are available from 2 -4 PM on Thursdays, should you require a meeting to discuss this review. Process; After approval, plans will need to be bonded. The bonding process is begun by submitting a bond estimate Engineering Review Comments Page 3 of 3 request form and fee to the Department of Community Development. One of the plan reviewers will prepare estimates and check parcel and easement information based on the approved plans. 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. After bonding and agreements are complete, county staff will need to enter project information in a DEQ database for state application processing. DEQ will review the application information based on local VSMP authority approval. At this time, the DEQ portion of the application fees will need to be paid directly to the state. For fastest processing, this is done electronically with the emails provided on the application. DEQ should notify applicants with instructions on how to pay fees. When DEQ approves the application, they will issue a permit coverage letter. This should be copied to the county. After DEQ coverage is issued, via the coverage letter, the County can hold a pre - construction conference. Applicants will need to complete the request for a pre - construction conference form, and pay the remainder of the application fee. The form identifies the contractor and responsible land disturber, and the fee remaining to be paid. 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 joint VSMP and 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; http://www.albemarle.org/deptforms.asp?department=cden,gwpo File: E1_vsmp_ review_ FoothillPhase4 &5_wpo201400086.doc