HomeMy WebLinkAboutWPO201400004 Review Comments WPO VSMP 2014-08-26i"
,. `IRGINZP
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project: Old Trail Village Blocks 28 & 29B (SDP201400009, WP0201400004,
(Rev. 1) 23 July 2014
Rev.2 7 Aug 2014
Rev.3 26 Aug 2014
Reviewer: Max Greene (initial);
John Anderson
Glenn Brooks (this was taken from John's queue for an accelerated review at the
request of Dave Brockman to Doug Walker)
This is an updated memo for erosion control and stormwater plans received today (26 Aug). The VSMP
plans are approved and you can proceed with bonding and grading permits. A new road plan was not
received, although we discussed many of those comments in our meeting of last Thursday, the 215", and they
should be easily resolved. The road plan will need to be approved and bonded before final plats can be
recommended for approval.
Site plan (SDP201400009):
Approval to Planning can be recommended for the site plan when other final plans are approved.
Street and Utility, drainage plans (SUB210400092):
Street and utility plans were not received with revision 2, however these items were reviewed on the
site plan, assuming these are the same. A specific street/road plan is required for bonds and plat
approvals.
1. VDOT approval is required.
2. Remove the grade breaks in the profiles. Provide vertical curves at these locations. At entrances,
a reduced K value of 5 to 10 can be used to transition from the intersected cross - grade.
Belgrove Rd.; 10 +00 and 14 +05 Hazel Grove Rd.; 10 +16 and 14 +96
Golf View Dr. 17 +50 Birchen Dr. 10 +00 and 13 +27
Ashlar Ave. 10 +16 Birchen Ln. 12 +50
Birchen Ct. start, middle, end
3. Please provide drainage profiles for the entire stormwater system. (Combining some of these with
the road profiles is difficult to read.)
4. Please revise inlet design and computations.
(i) Per VDOT Drainage Manual use 0.1% grade to check curb spread flanking sag inlets.
SUB201400092)
Plan preparer:
Roudabush, Gale & Assoc.[bledbetter @roudabush.com,
cmulligan @ roudabush. com]
Owner or rep.:
MARCH MOUNTAIN PROPERTIES LLC [dave @ oldtrail village. com]
Plan received date:
11 February 2014
(Rev. 1)
9 June 2014 (Road Plans /SUB201400092)
(Rev. 1)
12 June 2014 (Site/WPO)
Rev.2
29 July 2014
Rev.3
26 Aug 2014
Date of comments:
21 March 2014
(Rev. 1) 23 July 2014
Rev.2 7 Aug 2014
Rev.3 26 Aug 2014
Reviewer: Max Greene (initial);
John Anderson
Glenn Brooks (this was taken from John's queue for an accelerated review at the
request of Dave Brockman to Doug Walker)
This is an updated memo for erosion control and stormwater plans received today (26 Aug). The VSMP
plans are approved and you can proceed with bonding and grading permits. A new road plan was not
received, although we discussed many of those comments in our meeting of last Thursday, the 215", and they
should be easily resolved. The road plan will need to be approved and bonded before final plats can be
recommended for approval.
Site plan (SDP201400009):
Approval to Planning can be recommended for the site plan when other final plans are approved.
Street and Utility, drainage plans (SUB210400092):
Street and utility plans were not received with revision 2, however these items were reviewed on the
site plan, assuming these are the same. A specific street/road plan is required for bonds and plat
approvals.
1. VDOT approval is required.
2. Remove the grade breaks in the profiles. Provide vertical curves at these locations. At entrances,
a reduced K value of 5 to 10 can be used to transition from the intersected cross - grade.
Belgrove Rd.; 10 +00 and 14 +05 Hazel Grove Rd.; 10 +16 and 14 +96
Golf View Dr. 17 +50 Birchen Dr. 10 +00 and 13 +27
Ashlar Ave. 10 +16 Birchen Ln. 12 +50
Birchen Ct. start, middle, end
3. Please provide drainage profiles for the entire stormwater system. (Combining some of these with
the road profiles is difficult to read.)
4. Please revise inlet design and computations.
(i) Per VDOT Drainage Manual use 0.1% grade to check curb spread flanking sag inlets.
Engineering Review Comments
Page 2 of 3
(ii) All spreads must be below "' /z travel lane width + gutter width" per VDOT DM table 9 -1.
This includes inlets that you have labeled temporary. If overland flow is a problem, stub out a
culvert or inlet in the field off the road.
(iii) If no inlet are to be provided in smaller roads and alleys, check spreads near the exits of each
lane /alley. Account for roll -top curbing. Check capture. Limit flow into intersected streets.
Show roll -top transitions at end of radii.
5. Hazel Lane appears to require no- parking on one side, which should be indicated by signs. A 29'
width would negate the need for this. (VDOT Road Design Manual app.B, table 1)
VSMP: Stormwater Management Plan (WP0201400004):
1. A construction record drawing is needed for the pond.
Rev.3: The plan has been clarified to contain as -built information serving as a record drawing.
Comment addressed.
2. Please do not use the proposed master stormwater plan sheet, as this contains information that
cannot be approved with this plan. It is enough that plans agree with the ZMA approved plans.
The ZMA plan would be appropriate to include, but it is not necessary.
Rev.3: Comment addressed.
3. There was not enough information with the plans to check routings as summarized on plan sheets.
The construction record drawings with drainage areas and details may provide this.
Rev.3: This pond was previously approved with the Timmons plan before construction. The
information provided is verification of adequacy.
Rev.3: The stormwater management plan is approved.
VSMP: Erosion and Sediment Control Plan (WP0201400004):
1. Provide a profile and details for the sediment basin as it is to be constructed with this project.
Provide all supporting computations and drainage areas per the handbook. (This must be done as a
first step in construction activities.) In my experience VDOT does not want the road to act as an
embankment or dam. I would have to get VDOT approval for such an arrangement.
Rev.3: This comment is being held for possible correct in a later amendment. I do not have a
VDOT approval for impounding on the public road culvert, but I am approving the plan based on
your word in our meeting of Thursday, 21s` of August, last week, in which you said VDOT was OK
with it. I will verify.
2. Remove the diversions through the middle of the grading activity. These are not maintainable. It
appears to be an attempt to split up the site artificially, to provide traps instead of a basin, which
does not appear viable. A basin in front of 123 would appear to address this and the inlet
computation.
Rev.3: comment addressed.
3. Show permanent seeding symbols on the plans.
Rev.3: comment addressed in part. Missing areas will be expected to be permanently seeded
within 9 months per county code.
Rev.3: The erosion control plan is conditionally approved per comment 1.
VSMP: Pollution Prevention Plan (WP0201400004):
A pollution prevention plan was not received. A pollution prevention plan is required.
Rev.3: The pollution prevention plan has been received.
VSMP: SWMPP, Stormwater Pollution Prevention Plan (WP0201400004):
Engineering Review Comments
Page 3 of 3
Please revise the SWPPP to be specific to this project, and reference or include these specific
plans. Please make sure all dates are noted and certifications signed. The EPA template is a good
place to start, as noted in the completeness check document sent previously. For existing DEQ
permits provide the registration statement and DEQ coverage letter so the area of coverage and
fees can be checked.
Rev.3: The swppp documents have been received. You have provided a generic document for
more than just this project. Under our current DEQ guidance, you would need to have final plans
and documents approved for all those areas in the swppp, in order to receive your VSMP permit
coverage from the county. As DEQ has issued coverage, I will approve these as they are for now,
but I anticipate you will need to amend them in order not to be in violation.
VSMP: Mititation Plan (WP0201400004):
A mitigation plan was not received. A mitigation plan is required for disturbance to stream buffer.
Rev.3: You have indicated that the stream buffer disturbance was a result of a previous phase, so
this will be addressed through other projects.
Current Development Engineering is available from 2:00 -4 PM on Thursdays to discuss these review comments.
Filc: WP0201400004- SDP201400009 -OTV Blocks 28 & 29B- 072314