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Home My WebLink AboutWPO201900054 Review Comments WPO VSMP 2021-07-13Phone (434) 296-5832 OF AI-pr �1r� w A. COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 VSMP Permit Plan Review Project title: Western Albemarle High School Site Improvements Project file number: AT02019-00054 Plan preparer: Timmons Group Johnathan M. Showalter, PE Owner or rep.: Albemarle County School Board Plan received date: 3 October 2019 (Rev. 1) 31 December 2019 (Rev. 2) 25 February 2020 (Rev. 3) 14 May 2021 Date of comments: 10 October 2019 (Revised 10/17119) (Rev. 1) 5 February 2020 (Rev. 2) 27 March 2020 (Rev. 3) 13 July 2021 Reviewer: WW Associates (Rev. 1) Matt Wentland A. Stormwater Pollution Prevention Plan (SWPPP) Fax (434) 972-4126 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. This SWPPP is disapproved, and the reasons are provided in the comments below. 1. Provide a signature on the Registration Statement. The Registration Statement instructions should not be submitted. (Rev. 1) Comment not addressed. A permit cannot be issued until addressed. (Rev. 3) Revise the Registration Statement to reflect the modular classroom addition. These two projects will put the disturbed area over 1 acre and will require DEQ coverage. 2. The 61 order HUC must be provided on the Registration Statement. (Rev. 1) Comment addressed. 3. A Notice of general permit coverage must be included prior to final approval. (17-405.A.2) (Rev. 1) Comment addressed. 4. Qualifications and contact information for qualified personnel is required. (17-405.13 and 9VAC25-850-10 et seq.) (Rev. 1) Response noted. 5. Provide a signed certification (9VAC25-870-370). (Rev. 1) Comment not addressed. A permit cannot be issued until addressed. (Rev. 3) Comment addressed. 6. Provide a Delegation of authority (17-405.C.) (Rev. 1) Response noted. 7. Now that the WPO number has been generated, please include it on the plan cover sheet and calculations packet. (Rev. 1) Comment addressed. 8. Please include the requirement for record drawings (17-422). (Rev. 1) Comment addressed. 9. General Permit, Part II.G.2.a(2) prohibits the use of representative inspections for construction activities discharging to impaired waters. Please delete the paragraph. (Rev. 1) Comment addressed. Engineering Review Comments Page 2 of 4 10. Provide a copy of the General Permit prior to final approval. (Rev. 1) Response noted. 11. Please note that additional comments may be generated based on the response to the comments provided. (Rev. 1) Response noted. B. Stormwater Management Plan (SWMP) VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a SWMP. This plan is disapproved. 1. The drainage areas for level spreaders appear to be incomplete. The entire areas draining to them must be included on the plans, and in the calculations. Level spreader #2: if any roof drains discharge to the courtyard, the volumes must be noted and included in calculations. (Rev. 1) Comment addressed. 2. On Sheet C5.2, the access road to the field house does not appear to be included in the drainage area, except at the lower end. This is related to comment #2 above. Include all of the areas draining to BMPs. (Rev. 1) Comment addressed. 3. Sheet C6.0: In the water quality calculation box, the post -development impervious land cover does not match the total from the labels on the drawings on the same page. Please correct. (Rev. 1) Comment addressed. 4. The Sedimentation Basin elevation call "663.25" appears to be incorrect. Please correct. (Rev. 1) Comment addressed. 4. stafmv,xator onlet-lations othof than a summary an Sheet C6.0 wefe not provided. Please pfavide. 6. Provide arrows indicating direction of stormwater flow (17-405.A.5.a.) (Rev. 1) Comment addressed. 7. Provide a description of the long-term operation and maintenance plan (17-403.A.5). (Rev. 1) Comment addressed. 8. Level spreader #1 is not shown on the profile on C7.0. It is labeled, but not shown like the others. Please show. (Rev. 1) Comment addressed. Revision 1 Comments 9. Please contact Ana Kilmer in our office prior to purchasing the 0.0 0.21 lblyr of nutrient credits. (Rev. 2) Response noted. (Rev. 3) Response noted. C. 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. Sheet C1.0 General Notes, #8 refers to VDOT. Please delete. (Rev. 1) Comment addressed. 2. Include a note to minimize soil compaction, per 17-402.A.6. (Rev. 1) Comment withdrawn. 3. Sheets C3.2 and C3.3 legends: labels for SF and SSF appear to be switched. Please correct. (Rev. 1) Comment addressed. 4. Sheets C2.0 and C3.4: provide topo in the locations of "wash rack". (Rev. 1) Comment addressed. 5. The Wash Rack detail specifies the use of a sediment trapping device. Please show such devices. (Rev. 1) Comment addressed. 6. Provide the land disturber as required by 17-402.C.4. (Rev. 1) Response noted. Engineering Review Comments Page 3 of 4 7. The inspection log templates do not include all of the information required to be inspected (see 9VAC25-880-70, Part II, sections B and G.) Please provide all of the required information, to ensure that the inspector documents a thorough inspection. (Rev. 1) Comment addressed. D. Pollution Prevention Plan (PPP) The PPP content requirements can be found in County Code section 17-404. This plan is approved, for the reasons provided below. 1. Show area(s) to be used for portajohn, construction waste and other support activities. (Rev. 1) Comment addressed. 2. See comment above for the sediment trap on the ramp project for wash waters (14-404.13. La). (Rev. 1) Comment addressed. 3. The location of the temporary materials storage trailer described in Section F of the PPP narrative is not shown on the plan. (Rev. 1) Comment addressed. 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 entails 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. Engineering Review Comments Page 4 of 4 County forms can be found on the county website forms center under engineering; http://www.albemarle.org/deptforms.W?departtnent=cdengno File: WPO201900054 WAHS RampFieldHouse comme 'C\