HomeMy WebLinkAboutWPO201400072 Review Comments WPO VSMP 2014-10-29� OF AL
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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: Chick -Fil -A
Project File Number: WP0201400072
Plan preparer: Horton & Dodd, P.C. [gdodd @hdpc.net]
Owner or rep.: FLYNN, CORVEN D & KATIE H [corven @akarionrealty.com]
Plan received date: 6 October 2014
Date of comments: 29 October 2014
Reviewer: Max Greene, Glenn Brooks
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. No additional fee is required for resubmittal. The
VSMP application content requirements can be found in County Code section 17 -401.
A. Stormwater Pollution Prevention Plan ( SWPPP)
Comments on SWM and swppp;
VSMP:SWPPP
1. Please use the Albemarle County template for the SWPPP documents.
Please ensure the owner and operator are identified, and the proper signatures are present.
A pollution prevention plan was not found. Using the county template will ensure a PPP is
identified.
VSMP:SWM
1. A pipe system should be used for detention storage. The chamber system is impossible to access
or maintain. Ensure positive drainage, adequate access and maintenance.
2. The Tc values are too high. The entire Tc path is calculated as sheet flow. Tc values for a
developed site of less than 2 acres should be no more than 10 min.
3. Use the CN values given in the Channel And Flood Protection tab of the VRRM spreadsheets to
compute composite CN.
4. Show the drainage areas to all inlets, including the filterras, on the drainage maps.
Computations cannot be verified without adequate drainage area maps.
5. It is highly unlikely that the gutter and inlet collection system will capture the 100yr storm.
6. Provide trash racks or screens to prevent clogging in the detention storage system.
7. Details for the system and controls must be to scale.
8. The pipe system must be designed for open channel flow capacities at the 10yr storm. Please
increase pipe sizes accordingly.
9. Parking lot grades in front of inlets Al and 131 appear to exceed 5 %. Please revise to that grades
in any direction are 5% or less. There appears to be a future low spot in the corner between 131
and 132.
10. There does not appear to be an adequate outfall channel between C1 and D6.
Engineering Review Comments
Page 2 of 3
A. Pollution Prevention Plan (PPP)
The PPP content requirements can be found in County Code section 17 -404.
1. A PPP was not found.
B. 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. See comments from County Engineer above.
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 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) ESC Plan does not appear to be complete.
a) Sheet C -3.2 is not approvable. Sheet 3 -2 shows entire site drainage funneled into VDOT
right -of -way without sediment control or protection.
b) Sheet C -3.2a should replace sheet C -3.2 in the package, however there is still a large portion of
the site funneled into VDOT right -of -way without treatment. Please show a sediment control
device at the outlet of the diversion along State Route 250.
c) Sheet C -3.2b Please note the sediment control devices will not be approved for removal without
written consent from the County WPO site inspector.
d) Please provide phasing for conversion from phase 2 to finished grading with E &SC protections
shown for final product.
2) Check dams are not adequate sediment control for diversion outlet. Check dams are an aid in the
sediment trapping strategy for a construction site. This practice is not a substitute for major perimeter
trapping measures such as a sediment trap (Std. & Spec. 3.13) or a sediment basin (Std. & Spec. 3.14).
3) Inlet protection detail plate 3.07 -2 should not be used on this site due to clogging issues. Inlet
protection plate detail 3.07 -1 or inlet protection detail plate 3.07 -3 is preferred as long as the
emergency overflow elevation is below the curb elevation for the State roadway (appears to be less
than 2') and inlet protection will not cause stormwater flow into roadway when overtopped.
4) Please add the Albemarle County Paved Temporary Construction entrance detail on the plan. The
County inspector will work with the owner /grading contractor as to when and if the temporary paved
construction entrance is required for construction.
5) Please submit sediment trap design worksheet and dimensions for plan view layout. WPO inspector
will need to verify construction per design calculations and layout.
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 3 of 3
Process;
After approval, plans will need to 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, 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;
ht!p://www.albemarle.or,-/deptforms.asp?department=cdenawpo
File: E1_vsmp_review_projectname.doc