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Home My WebLink AboutWPO201900027 Review Comments WPO VSMP 2020-11-05� AI �h �lRGIN�P 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: Pleasant Green Connector Road Project file number: WPO201900027 Plan preparer: Collins Engineering [scoff@collins-engineering.com] Owner or rep.: SM Charlottesville LLC Plan received date: 15 April 2019 Rev. 1 received: 08 Oct 2020 Date of comments: 14 May 2019 Rev. 1 comments: 05 Nov. 2020 Reviewers: Emily Cox 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 ESCP, (3) a SWMP, and (4) any TMDL measures necessary. 1. SWPPP was not provided with this submission. Please provide a SWPPP with all requirements. The County suggests the submission of a 2014 and 2019 DEQ registration statement in the SWPPP. Rev. 1: SWPPP or updated registration statement and coverage map must be provided. B. Pollution Prevention Plan (PPP) The PPP content requirements can be found in County Code section 17-404. 1. PPP not provided with this submission. Please provide a PPP with all requirements. Rev. 1: Comment not addressed. 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. How are water quality and water quantity requirements of this proposed road being addressed? Rev. 1: Comment addressed or other comments now issncd more specific to this question. 2. This road goes through a recorded SWM forest & open space easement. See attached plat, SUB201600238. The plat must be amended before this plan can be approved. Rev. 1: Comment not addressed. Engineering Review Comments Page 2 of 3 3. WPO201600069 utilized the above referenced forest & open space in their VRRM spreadsheet therefore that WPO plan must be amended to show the removed forest & open space. The plan did have excess water quality credits, however the developer has already used them on a project called Brookdale. Rev. 1: Comment not addressed. These have different operators, therefore cannot be computed and revised with this project. Please see 9VAC25-870-69. The other plan still needs an amendment. 4. SDP Ws are referenced and say under review. Please remove the status as it may change by the time this plan is approved. The plan # is enough. Also add the associated WPO #. Rev. 1: Comment addressed. 5. A mitigation plan is refenced on the cover sheet. However, there are no details or plans for the mitigation in this plan set. Please clarify. Rev. 1: Comments on mitigation plan listed below in section E. 6. Provide all applicable permits for work in Powells Creek. (CLOMR-F, approved FDP permit and approvals from Army Corps of Engineers, etc.) Rev. 1: Comment not addressed. 7. Provide the approved plan number where the design for the triple box culvert and wing walls are located. This plan cannot be approved until that plan is approved. Rev. 1: Comment not addressed. This design is in SUB2019000058. 8. Rev. 1: Per condition #5 in SP201900002, the greenway must be dedicated before grading permit can be issued. 9. Rev. 1: Per condition #7 in SP201900002, a Phase II environmental assessment must be completed before VSMP or final subdivision plat approval. 10. Rev. 1: Please provide specifications for the bioretention materials. 11. Rev. 1: Please specify the outfall location that was the "point of analysis". It is unclear on the plan. (The outfall at the creek? The bioretention outfall?) 12. Rev. 1: Is the ponding depth proposed to be I ft? 6" is preferred unless the proposed plants can endure Ift of water. 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. Please provide a note or plan for how to stabilize the area that was used as a stream diversion. Rev. 1: Comment addressed. 2. Sheet 4 has a note in the top right comer that references a sanitary sewer installation. Is this a mistake? Rev. 1: Comment addressed. 3. Sheet 5 has a note regarding slopes steeper than 3:1 that are not allowed with this plan. Please revise the grades and remove the note. Rev. 1: Comment addressed. 4. Provide dimensions and calculations for all outlet protection shown on the plan. Rev. 1: Comment addressed. 5. Provide drainage to the stream crossing to show it is less than 1 square mile. VESCP 3.25 is for drainage areas less than that. Rev. 1: Comment addressed. 6. Show that type B channel lining is adequate (velocity?). Rev. 1: Comment addre 7. Rev. 1: Per the BMP clearinghouse practice 9, the bottom of the sediment trap should be at least I ft above the post -construction excavation. This sediment trap bottom is 690 and the bioretention bottom is 691.5, which is the opposite. 8. Rev. 1: [Sheet 31 Please review the project description in the narrative. It references this WPO and a different acreage? It is also noted on Sheet 4. It appears it should be: WPO20190003-amendment 1. 9. Rev. 1: Per the VESCH, the maximum height of the sediment trap embankment is 5ft. This Engineering Review Comments Page 3 of 3 appears to be 6 It (698-692). E. Mitigation Plan 1. Rev. 1: Please provide details and cross sections for #2, stream bank stabilization. 2. Rev. 1: Show the area that will be planted in #4. If it is not in the buffer, it must be in an easement. 3. Rev. 1: Ensure all proposed plantings are native. 4. Rev. 1: Provide a maintenance plan and schedule of completion for the mitigation. 5. Rev. 1: Provide details, schedule/sequence and plan for removal of the concrete dam. Also, provide applicable permissions/permits (Army Corps of Engineers). 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 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, ajoint 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, bft://www.albemarle.org/deptforms.asp?departrnent--edengmTo