HomeMy WebLinkAboutWPO202200009 Review Comments WPO VSMP 2022-04-22�q oe nt 401 McIntire Road, North Wing
Charlottesville, VA 22902-4579
County of Albemarle Telephone: 434-296-5832
m COMMUNITY DEVELOPMENT DEPARTMENT WWW.ALBEMARLE.ORG
VSMP Permit Plan Review
Project title:
Mountain View Elementary School
Project file number:
WPO202200009
Plan preparer:
Craig Kotarski [craig.kotarski@timmons.com]
Owner or rep.:
Sheila Hoopmann [shoopmann@kl2albemarle.org]
Plan received date:
March 14, 2022
Date of comments:
April 22, 2022
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/approved.
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. Submit a SWPPP. Template - https://www.albemarle.org/government/community-
development/a pply-for/engineering-applications/vsmp
B. Pollution Prevention Plan (PPP)
The PPP content requirements can be found in County Code section 17-404.
1. Provide a PPP for review.
C. Stormwater Management Plan (SWMP)
VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a
SWMP. This plan is denied, 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. Sheet 6.2:
a. Verify/Correct diameter - 48" versus 6' per details.
b. Provide secured trash rack over orifices.
2. Sheet 7.1:
a. Revise: The height of cover over detention pipe system shall be 2' or % diameter
whichever is greater.
b. Show HGL.
c. Provide profile of detention pipe system: Show invert, slope, size, length, material,
weir, access.
i. Provide maintenance access above weir.
ii. Provide access ladder & detail.
3. Add note to provide water -tight fitting where pipes of dissimilar materials connect.
4. Sheet 5.2, etc.: Show MH accesses above weir plate locations for the CMP detentions.
Engineering Review Comments
Page 2 of 3
5. Provide trash rack secured to spillway barrel of det. pond.
6. Provide additional MH access (every 50' of length) for storm pipes 307, 317, 319, 418.
Alternatively, additional MH access not required if pipe size is 15".
7. Sheet 6.4: Nutrient bank availability: The first assessed waterway downstream of the
LDA with an impairment is Cows Branch, as shown on the DEQ NPS Nutrient Trading
Dataviewer. According to the hierarchy credits should be purchased within the same 8-
digit HUC (02080204). It appears that there are two banks available, The Rivanna River
NPS bank and Ivy Creek NPS bank to purchase from.
8. Hydro Calcs - Please provide Post Dev summary sheets like the Pre Dev (on pages 10,
22, 34) given. Verify total DA match Pre -/Post-.
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. Cover:
2.
3.
EM
5.
a. Add WPO# under title.
b. Signature panel can be removed.
Sheet 2.1/2.2: Show footprint and label existing BMP/SWM facilities.
Sheet 2.4/2.5: Show label for the removal of the bioretention facility and SWM pond.
Add note ...'as shown on WPO200600002'.
Sheet 3.2/3.3:
a. Revise construction entrance (CE). Centrally place or provide additional
construction entrance. There's grading shown not just at the current CE location.
If trucks are hauling earth, then there should be connected paths between areas
shown to get to the CE.
b. Show sediment trapping device location at CE.
c. Show staging area, stockpile area (protected with silt fence).
Sheet 3.3:
a. Show SB symbol. SB still in place for ph.ii until upstream area is fully stabilized.
b. Show IP symbol at curb cuts and OP symbol at basin.
c. Grading over 2:1 here. Revise to be 2:1 or flatter.
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d. Provide type of low -maintenance ground cover (not grass) for slopes over 3:1.
Engineering Review Comments
Page 3 of 3
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:
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.. ..
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.
rprnrdt-d. The Cnunty's Management Analyst er other staff will prepare the form'; and rAt-_rk fG*
ow eFship and signature information- The Gempleted forms %A.fill need tn hP ';-_IbFRi#f-_d tA the
Geunt.. whe will . and the agFeement-.
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.albemarle.org/govern ment/community-development/apply-for/engineeri ng-applications