HomeMy WebLinkAboutWPO202000043 Review Comments WPO VSMP 2020-10-13Phone (434) 296-5832
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia22902-4596
VSMP Permit plan review
Fax (434) 972-4126
Project title: Airport Road Sheetz
Project file number: WPO202000043
Plan preparer: Line and Grade Civil Engineering [dhyer@line-grade.com]
Owner or rep.: Airport Plaza, LLC, Andrew Baldwin [dhyer@line-grade.com]-See
below
Plan received date: Sept. 14, 2020
Date of comments: Oct. 14, 2020
Reviewer: David James [djames2@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 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. General
1. VSMP Application -Please provide owner's correspondence info.
2. The WPONSMP & FSP need to be separate plans.
3. Cover:
a. Please add the WPO# under title.
b. Please remove the VDOT Design Criteria, Submittal Log, and Signature Panel.
c. Please remove sheets C0.2, C2.6 thru C3.3, C4.3, C9.0, C9.1, AL0, ALL from the
WPO plan.
4. Add in the County's `General construction notes for Erosion and Sediment Control plans',
and `General construction notes for Stormwater Management plans'.
5. Obtain VDOT entrance permits prior to start of construction.
6. Record any offsite easements prior to start of construction.
B. 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. Registration Statement:
a. Sec. I. A. — Provide Contact person & Primary Email information prior to VSMP
plan approval.
b.
c. Sec. IV. F. —Please answer yes or no.
anty's MS4.
C. Pollution Prevention Plan (PPP)
The PPP content requirements can be found in County Code section 17-404.
1. Show where any fueling/fuel storage, chemical storage locations are on the PPP. Also, show
locations where concentrated stormwater discharges (Ex. Spillway from VDOT basin, X-7,
X-2).
D. 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. Unfortunately, no infiltration BMP practice is allowed at this site due to gas
stations & car washes being a stormwater hotspot (VADEQ, BMP Spec#8, p.21).
2. C7.2:
a. Please provide VRRM spreadsheet for verification (email is fine).
b. Please provide Letter of Availability from nutrient entity provider.
3. C7.5:
a. BMP A - Runoff from 15" pipe could short circuit to riser structure.
Provide some alternate design or configuration to achieve 0.3 min.
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b. Bioretentions (#1) - Provide a form of pretreatment (Section 6.4).
C7.6 does depict a Gravel flow spreader, but it's not called out or shown in
the BN P plan views.
Pre-treatment should be located at the concentrated outflow, but located
outside of biorentention's bed surface area.
I treatment cell). I
Pre-treatment (Section 6.4): a pretreatment cell,
grass filter strip, gravel diaphragm, gravel flow
spreader, or another approved (manufactured)
4. C7.4 - Please also provide channel design & liner needed from SD-12 to channel.
5. Bioretention setbacks (Section 5):
a. BMP A-
i. It appears that the car wash is within 10' of the facility and must be located
outside.
ii. It appears that water lines are within 5' of the facility and must be located
outside.
iii. It appears that the facility is located within 35' of a sanitary line and must
be located outside.
iv. Gas & cable lines can cross under the facility, but you must show that these
lines are protected & can be accessed (repaired) without disturbing the
facility.
b. BMP B — It appears that the facility is located within 35' of a sanitary line and must
be located outside.
6. C8.1 (Section 6.8) — The landscape plan shows a hatched area for the bioretentions, but does
not indicate what plants or bio-seed mix is used there. -75% (min) plant surface coverage
needed within 2yrs.
7. C7.0/7.1— Your pre -development land cover areas, specifically forest/open space area,
doesn't match land cover areas found in GIS. This is what the 2013 land cover overlay looks
like:
Green — Tree/Pasture Tan — Turf Black — Impervious
Please provide an accurate account of land coverages values to justify pre -/post- runoff
quantity analysis, and VRRM worksheet.
2. Please provide SWM routing/ponding reports: Summary of pre-/post-dev. runoff values for
Energy Balance is not enough.
3. Provide manufacture's long-term maintenance for the UD system & Specs. What are the
orifice or weir controls present (locations)? Show the release rates for each. Show the design
storm elevations at these control release locations.
4. Provide list of materials, cost -estimate for the UD system.
5. C6.2 — For storm pipes operating under pressure flow (HGL above) provide that these pipe
joints & connections are made water -tight.
6. Provide inlet shaping (IS-1) at X-2.
7. Reduce spread to under loft for SD-11.
S. Show that the entrances won't flood during 25-yr storm. Show 100% capture of flow will
happen at entrances.
E. 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. Sheet C2.2, 5.0, etc.: Please tie in 5571, 558' contours along west entrance.
2. Provide low maintenance (not grass) ground cover specified on the plans where
grades are steeper than 3:1. [DSM, Sect 8A]
3. Please confirm that you will not be using the existing entrance off Rt. 29 as a
construction entrance.
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.
County forms can be found on the county website forms center under engineering;
bttp://www.albemarle.ory/deptfortns.asp?department==cdengno