HomeMy WebLinkAboutWPO201800067 Plan - E&S 2018-10-11COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
VSMP (VESCP) Plan Review
Project:
SMR to RMR Raw Water Main, Birdwood Golf Course Section—VESCP/Miti ag tion
Project File Number:
WP0201800067
Plan preparer:
Pasquale Arcese, IV, P.E. /Michael Baker Intl./MBI [PArcese6Dmbakerintl.com ]
9400 Innovation Drive, Suite 110, Manassas, VA 20110
Owner or rep.:
Michelle Simpson, P.E., Sr. Civil Engineer /Rivanna Water & Sewer Authority
695 Moores Creek Lane, Charlottesville, VA 22902 [msimpson a,rivanna.org]
Plan received date:
28 Aug 2018
(Rev. 1)
8 -Oct 2018
Date of comments:
1 Oct 2018
(Rev. 1)
9 -Oct 2018 (email sent 10/9/2018 10:44 AM; 10/9/2018 11:44 AM)
VSMP Plan Review Memo, 11 -Oct 2018
Reviewer:
John Anderson
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 for reasons outlined 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 ESOP, (3) a SWMP'and (4) any TMDL measures necessary. E-mail sent 9/28/2018 1:56 PM
requests SWPPP using county template. Provide SWPPP using 12 -section County template —Link:
httu://www.albemarle.orQ/unload/ima2es/forms center/deuartments/Community Develonment/forms/Eneineerine and WP
O Forms/Stormwater _Pollution _Prevention _ Plan_ SWPPP_template.pdf (Sec. 6 addresses six items listed at DEQ
guidance Memo 15-2003, p. 4, bullet 1) — (Rev. 1) to be submitted with next plan submittal (MBI comment
response letter).
B. Pollution Prevention Plan (PPP)
The PPP content requirements can be found in County Code section 17-404.
1. Sec. 6 of county SWPPP template; please provide. (Rev. 1) No change.
C. Stormwater Management Plan (SWMP)
SWM Plan —If revised design addresses preliminary review comments sent as email 9/28/2018 1:56 PM, then project
is eligible for alternative review of SWM requirements as a linear project, per DEQ Guidance Memo No. 15-2003,
Melanie Davenport, April 23, 2015 (Attached: p. 3/4 conditions). Please incorporate 4 bullet items at bottom of pg.
3 of DEQ Memo into the VESCP Plan. Incorporate 1 I bullet, p. 4 of Memo into SWPPP, Sec. 6.
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 for reasons provided in comments, below. ESCP content requirements can be found in County Code
section 17-402. (Also, see email sent 9/28/2018 1:56 PM.) (Rev. 1) Also, see email sent 10/9/2018 10:44 AM.
Engineering Review Comments
Page 2 of 4
1. Provide copy of USAGE Corps permit issued in tandem with Ragged Mountain Reservoir project review.
RWSA email (9/28/2018 2:54 PM): "Please note that we previously obtained the ACOE and DEQ permit
for this work as part of our 9 -mile South Fork Rivanna Reservoir to Ragged Mountain Reservoir 36" raw
water main for the Community Water Supply Project." (Rev. 1) Addressed. Copies of USACE NAO
2006-03002 06-V1574 (1/31/12); USACE Permit No. 06-V1574 (6/3/08); VDEQ VWP Individual Permit
No. 06-1574 (Ragged Mountain Expansion Project /12/28/11) provided.
2. Silt fence (SF) appears to be sole ESC measure proposed, which is inadequate. Eliminate SF that runs
cross -contour, or that crosses swales or streams. Instead, propose check dams, stone outlets, trapping
devices, and diversions (RWD, CWD, DV) with trapping measures. SF is installed parallel with contours.
SF running up- /downslope should be replaced with berms, diversions, and —at lowest elevations —trapping
measures (even if Vol. 5 cy). For cross -contour portions of the utility corridor, SF may be installed in series
on contour, staggered along slope (scallop appearance). Provide check dams, if needed. At defined
channels /streams, SF should be discontinuous. Design should provide trapping device on both approaches
to every stream. (Rev.1) Partially addressed. As follow-up, see 10/9/18 email, items 8, 14, 25. Also,
please see correction email sent 10/9/2018 11:44 AM.
3. Note: Streams in vicinity are likely impaired, with TMDL limits for sediment. Consult VESCH, 3rd Edit.,
1992, for site and design considerations that apply. Review VESCH Std. and Spec. 3.05 (SF), in
particular. Provide measures appropriate to site topography, streams, resources, and potential for off-site
sediment transport over life of project. Consider effects of public visibility, and consequence of ESC
measure failure. (Rev.1) Addressed/acknowledged.
4. Note: A score of residential properties heighten public awareness. Albemarle anticipates calls, should all go
well. We anticipate complaints under current design. Design should consider the highly visible nature of
this project at the edge of Birdwood Golf Course, and Bellaire subdivision. (Rev.1) Addressed
/acknowledged.
5. Note: DEQ guidance memo restricts Area of disturbance to < 1 Ac. on a daily basis, for projects seeking
SWM review /exemption as a linear project. This means the GC may not clear the entire corridor. Provide
VESCP Note with Project Narrative (E3) to clarify limit on daily disturbance. Design must pay particular
attention to proposed staging /laydown areas, which are non-linear. Albemarle could view staging /laydown
areas as subject to VSMP requirements, and not eligible for review under DEQ Guidance Memo 15-2003.
Provide careful VESCP design for both north and south access laydown areas. Note VESCH limits on SF
(1/4 Ac. /100' SF). Design for north laydown area shows SF as only control at foot of 300' slope. Revise
design. Absent careful design revision, Albemarle will likely have no choice but to review plans as subject
to stormwater quality and quantity standards listed at 9VAC25-870-65 and 9VAC25-870-66, since, given
geometry of laydown area/s, linear features are absent at these locations. (Rev.1) Partially addressed. As
follow-up, see 10/9/18 email, items 5, 6, 23.
6. Size temporary culverts and stream crossings to pass the 10 -yr rainfall event; provide pipe size calculations
on the plans. Provide calculations for crossings at north entrance (off Rt. 250), at Canterbury Road, and at
all other ditch or stream locations proposed to receive temporary pipe culverts. (Rev.1) Partially
addressed. As follow-up, see 10/9/18 email, items 18, 15, 16, 19, 20.
7. Provide typical title sheet project information —sample Attached. (Rev.1) Not addressed. Please see
10/9/18 email, items 1, 2, 32.
8. Strikethrough drawings that are not included in VESCP plan set (index). (Rev. 1) Addressed.
9. Sheet E2: Provide additional VESCH plate details for additional ESC measures. (Rev.1) Partially
addressed. As follow-up, see 10/9/18 email, items 9, 10, 11, 21.
10. Where utility line crosses stream buffer (9+50 thru 12+00, for example), a 60' corridor width does not
minimize impact. Revise corridor width to minimum required to install utility at design depth (within
stream buffers), and revise proposed utility corridor width and proposed access width wherever they occur
within 100' stream buffer, to the minimum needed to access project, and install 36" DIA waterline. Revise,
and show to scale on plans. (Rev. 1) Addressed.
11. Note: Engineering requests (courtesy) copy of recorded RW SA easement plat. If not recorded, easement is
required. Easement plats require county review. Link to Application:
htW://www.albemarle.orj4/unload/imaees/forms_center/departments/Community Development/forms/applic
ations/Easement_ Plat _& Checklist.pdf (Rev. 1) Plats /easements in process.
12. C3, E3, E4: Provide and show ESC symbols for temporary /permanent seed, mulch (TS, PS, MU), and any
additional measures in legend and on plans, wherever measures occur (RWD, DV, ST, TSD, OP, CD, VSS,
Engineering Review Comments
Page 3 of 4
SC, USC, TO, B/M, DC, etc.). (Rev.1) Partially addressed. As follow-up, see 10/9/18 email, items 3, 4
12.
13. C3: Label Rt. 250. (Rev.1) Addressed.
14. E3: Ensure TMPs are shown for adjacent parcels, Sta. 8+00-15+00 (and are readable /not obscured).
(Rev.1) Addressed.
15. E4: Ensure TMPs are shown for all adjacent parcels, Sta. 31+50-41+50, 49+00-52+00, 56+00-60+00.
(Rev.1) Addressed.
16. E4: Provide additional contour labels east of (northern) proposed staging /laydown area. (Rev.1) Partially
addressed. Asfollow-up, see 10/9/18 email, item 13.
17. E4: Provide ESC measures east of northern proposed staging /laydown area, between LC and adjacent
parcels. (Rev.1) Addressed.
18. Revise plan set title to include VESCP /WPO201800067. (Rev.1) Addressed.
19. Show 50' stream buffer at south entrance /crossing /laydown area; both sides of stream. (Rev.1)
Addressed.
20. Note: VESCP must be bonded. (Rev.1) Acknowledged.
New; please see 10/9/18 email (email item #):
1. (7) E3, Phase II, Note 3 provides ref, to soil stabilization matting where called for by the drawings. It
appears entire corridor calls for BM. If not, delineate areas by Sta. reference, or symbols.
2. (17) North Side Staging Area /Rt. 250 Entrance: Provide PCE slightly interior to the site. Provide stone CE
at edge of Rt. 250, entrance culvert, then paved (construction entrance, PCE) with wash rack.
3. (22) Corridor /Staging: Show (symbol for) SAF on plans, wherever SAF proposed.
4. (24) Wherever SF is proposed coincident with boundary lines, provide labels to help avoid GC trespass.
Recommend include labels across plan sheets requiring 3'-5' Min. offset, SF to adjacent property lines.
5. (26) Recommend labels indicating GC will post both north /south side staging area access points from Rt.
250 (Ivy Road) and Canterbury Road `No Trespassing' or `Keep Out' to discourage trespass.
6. 27 El A (typographical): Right of Way Diversions. Also, revise temporary culvert crossing sentence to
read: `...to provide a means for construction traffic to cross flowing streams without damaging...'
7. (28) ElA: Clarify that a paved construction entrance with wash rack is required at the south side entrance,
and interior to the site at the north side entrance. N side entrance to receive stone CE, as well.
8. (29) Provide PCE symbols on plans for paved construction entrance/s with wash rack.
9. (30) Provide labels and show on plans trapping devices at north /south side PCEs.
10. (3 1) E4: Ex. 24" culvert labels are sufficient; reference to 24" box culvert may confuse.
E. Mitigation Plan
17-602.13 provides exemption from duty to retain, establish or manage a stream buffer; public water /sewer
improvements are eligible if specific conditions are met. 17-604.C.5. lists requirements for stream crossings of
roads, streets, or driveways (not public utilities). Mitigation plan is not required, provided conditions listed at 17-
602.13. are met.
Note: Show 50' stream buffer at south entrance /crossing /laydown area; both sides of stream on VESCP plan. (Rev.
1) Addressed.
Engineering is available to meet with Applicants, Thursdays, 2 -4pm, to review plan review comments.
Process
After approval, VESCP plan 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
Engineering Review Comments
Page 4 of 4
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.
Link to bond estimate request form:
hitps://www.google.com/url?q=https://www.albemarle.org/upload/images/forms center/departments/Community Developme
nt/forms/bondsBond_Request _to Establish a Bond.pdf&sa—U&ved=OahUKEwjOsL-
ctOXdAhWmOAKHbcVBwoOFggGMAE&client=internal-uds-
cse&cx=013641561590022973988:g3cwj srdbli&usg=AOvVawl RFX8fSN 1_ObuZ8tTOgEEpK
After bonding is complete, the County can hold a pre -construction conference. Applicant will need to complete
the request for apre-construction conference form, and pay the remainder of the application fee. The form
identifies the contractor and responsible land disturbed, 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 grading permit will be issued by the
County so that workmaybegin.
County forms can be found on the county website forms center under engineering;
Ifyou have any questions, please contact me either by email (janderson2galbemarle.org) or by phone at
434.296-5832 ext. 3069.
Thank you
J. Anderson, Engineering Division
WP0201800067 SMR to RMR Raw Water Main —Birdwood Golf Course Sec_ VESCP-Mitig_101118rev1