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Home My WebLink AboutWPO202100057 Review Comments WPO VSMP 2022-03-31�.i OF AL8 County of Albemarle m COMMUNITY DEVELOPMENT DEPARTMENT VSMP Permit Plan Review Project title: Pantops Shopping Center - Enterprise Car Wash Project file number: WP0202100057 Plan preparer: Collins Engineering [scott@collins-engineering.com] Owner or rep.: CHARLES ROTGIN JR [crotgin@gemc.com] and Pantops Shopping Center, LLC Plan received date: 12 Oct 2021 Rev. 1 received: 14 Dec 2021 Rev. 2 received: 03 Feb. 2022 Rev. 3 received: 03 March 2022 Date of comments: 12 Nov 2021 Rev. 1 comments: Rev. 2 comments: Rev. 4 comments: Reviewer: 19 Jan 2022 28 Feb 2022 31 March 2022 Emily Cox 401 McIntire Road, North Wing Charlottesville, VA 22902-4579 Telephone: 434- 29 6 - 5 832 WWW.ALBEMARLE.ORG 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 disapproved. The rationale is given in the comments below. 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. Please provide a signed registration statement. Rev. 1: Comment ads 2. Plans in SWPPP will need to be updated with the final. approved ola Rev. 1: Comment still applies. Rev. 2: Comment still applies. Rev. 3: Comment still applies. 3. 1 .0 N1�Vlu a �161l�u � L11 a I � Lll I ,,. �... 1111�1 �uu ssed. 4. There appears to be two TMPs and two owners associated with this project. They will ' '1.Rev. 1: Ana is working with applicant to coordinate signatures. Rev. 2: Operator who signs the registration statement and section 9, signed certification, must meet signatory requirements per 9VAC25-880-70. Part III. K. Rev. 3: Comment not addressed. Provide updated SWPPP with signatures. 5. Please provide the owners email addresses. Rev. 1: Comment addressed. B. Pollution Prevention Plan (PPP) The PPP content requirements can be found in County Code section 17-404. '.. Please provide a plan view sheet of the PPP in the SWPPP. Rev. 1: Comment 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 Engineering Review Comments Page 2 of 5 stormwater management plan content requirements can be found in County Code section 17- 403. 1. A SWM Agreement must be recorded before this plan can be approved. Please contact Ana Kilmer[akilmer@albemarle.org or 434-296-5832 x3246] to complete this process. Rev. 1: Comment not addressed. Rev. 2: Comment addressed agreement recorded. 2. Nutrient Credits must be purchased before this plan can be approved. Please contact Ana Kilmer[akilmer@albemarle.org or 434-296-5832 x3246] to complete this process. Rev. 1: Comment not addressed. Rev. 2: Comment not addressed. Rev. 3: Comment not addressed. It appears to be included in the limits of your project (gets some drainage from the utility installation and some sheet flow): Rev. 1: Please provide outlet protection detail and design/calculations. Rev. 2: Comment addressed. 4. Limits of preserved slopes on this plan do not appear to match those shown on County GIS. To change these, you must submit a signed and sealed survey exhibit per County Code Sec. 30.7.4- b.1.h. Rev. 1: Slope analysis exhibit should clearly show the current preserved slopes line and the proposed preserved slopes line. It should also have spot shots to show the slopes that are labeled. An example can be found at https://Ifweb.a I bema rle.org/webl i n k/search.aspx?d bid=3&sea rchcom ma nd=%7b%5bC D D- Plan ning%5d:%5bApplicationNumber%5d=%22SDP201800008%22%7d (labelled as SDP201800008 Other 2018-05-09 critical slopes exhibit). Shots need to be shown and labelled and within 20' of each other. Rev. 2: Slope analysis exhibit should clearly show the current preserved slopes line and the proposed preserved slopes line. Spot shots and slopes are shown. Rev. 3: Comment addressed. Shown on E&S plan with different hatch. 5. Where is the car washing activity going to occur? Please show where the wash water will be collected. Rev. 1: Comment addressed. 6. Drainage area appears to be different than limits of construction. Please clarify and show the drainage areas used for water quantity calculations. There is some sheet flow from Engineering Review Comments Page 3 of 5 the existing parking lot. It is understood that the VRRM area is only the area that is disturbed. Rev. 1: Comment addressed. Please show where the existing roof drains from adjacent buildings outlet. Rev. 1: Comment addressed. 8. Will there be a final site plan for this? If not, the easements must be recorded and the wall designs must be provided before this plan can be approved. Also, an initial site plan or LOR must be submitted/approved before WPO can be approved. Rev. 1: Plat must be recorded before VSMP Plan can be approved. Rev. 2: Comment not addressed. 9. Is there an existing easement on this outfall? %tea .� Rev. 1: Comment addressed. 10. Any work to this outfall above would require a floodplain development permit. Also, per your note, you must specify the type/size of rip -rap proposed. Rev. 1: Comment partially addressed. Rip -rap is specified, but FDP plan is not evident. Please provide receipt of FDP submittal. Rev. 2: FDP202200002 must be approved before this VSMP can be approved. Rev. 3: Comment addressed. 11. Please show the 100-ft stream buffer. Rev. 1: Comment addressed. 12. Please show the floodplain elevation. Rev. 1: Comment addressed. 13. Please show that the existing pipe you are connecting to is adequate. You must include the flow through that pipe in your analysis. An example of how to do this with energy balance is attached to this comment letter (from the DEQ plan reviewer class). Rev. 1: Comment addressed. 14. A video of the existing pipe to the outfall should be completed to show that it is currently in good condition. Rev. 1: Comment addressed. 15. Provide pipe calculations from the SWM to the outfall. Other onsite pipes can be provided with final site plan(if there is one). Rev. 1: Velocity should not exceed 15 ft/s. Per VDOT drainage manual 9.4.8.7, 10 ft/s max is preferred. Your calculation shows 16.94 ft/s. Rev. 2: Comment partially addressed. This is an existing pipe. Please show ex. vs. proposed velocity to show you are not increasing. Also, please show calculations for this outlet protection (OP #2) on sheet 5. Ensure it can handle this velocity. Rev. 3: Comment addressed. 16. Please provide a cross section of this area: Am VKAPN rlrt - - L:44', S=i.14% o O ., 2_4 IMMOMP -- ---0 _ 0 Engineering Review Comments Page 4 of 5 Ensure the grading meets county code: 18-4.3.3, especially the distance to the property line. Rev. 1: Comment addressed. 17. Please provide a detail of the proposed retaining wall. Rev. 1: Comment addressed. Please note that this will need a building permit. Rev. 2: Comment acknowledged. 18. It appears guardrail is necessary along the retaining wall and slope. Please provide a detail. Rev. 1: Comment addressed. 19. Per County Code 18-4.12.17, the minimum one-way drive aisle width is 12ft. Please show this dimension. Rev. 1: Comment addressed. 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 approved, 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. Limits of disturbance are very close to preserved slopes, especially near the retaining wall. Please show cross section and wall tie back locations to show that preserved slopes will not be disturbed. Rev. 1: Please show the ex. preserved slope line vs. proposed with exhibit. Rev. 2: Comment not addressed. Please show existing preserved slope line(county GIS) vs. proposed/revised (from exhibit) on all applicable sheets. Rev. 3: Comment addressed. 2. Please specify plantings that can withstand steep slopes for those that are steeper than 3:1. Rev. 1: Comment addressed. 3. There should be perimeter controls for this area: Comment addressed. Mj Rev. 1: 4. Please address the fill in the sequence of construction. Will any measures have to be moved as the site is constructed. Will slope drains be necessary? Rev. 1: Comment addressed. Please be sure to notify the contractor of this sequence during the pre - construction meeting. 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. Engineering Review Comments Page 5 of 5 Process: After approval, erosion and sediment control and stormwater management improvements must be bonded. The bonding process begins when the plan is approved, and the applicant submits a bond estimate request form and fee to the Department of Community Development. A plan reviewer 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 to the County, who will record the agreement. After bonding and agreements are complete, county staff enters project information in a DEQ database for state application processing, if a DEQ permit is required. DEQ reviews 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, which must be posted at the construction site. After DEQ coverage is issued, via the coverage letter, the County can hold a pre -construction conference. Applicants must 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; https://www.al bemarle.org/government/community-development/apply-for/engineering-applications