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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
Project:
Old Trail Village, Block 113 & 3C
Plan preparer:
Roudabush, Gale & Assoc., Inc [914 Monticello Road, Charlottesville,
VA 22902, cmulligan @roudabush.com]
Owner or rep.:
JA -ZAN LLC [1150 Pepsi Place, Charlottesville VA 22901,
dave @oldtrailvillage.com]
Plan received date:
15 April 2014
Rev. 1 (WPO only)
29 May 2014
Road —see FILE: SUB201300096
Date of comments:
01 May 2014
Rev 1 (WPO)
11 June 2014 /Approved
Rev 3 (Road)
11 June 2014 /Approved
Reviewer:
John Anderson
A. Stormwater Management and Mitigation Plan (WP0201300052)
1. Separate out the WPO plans. They cannot be approved as part of a road plan or site plan set.
(Rev. 1) Comment addressed.
2. These plans indicate the off -site pond across Old Trail Drive will provide stormwater management.
This is fine as long as this plan gets runoff and discharges to that location. Please provide current
plans and profiles for the complete pipe run to the pond, indicating accurate current elevations of
ground, road, road substructure, and pond in the 2 and 10 year storms. This must be included fully
on this plan, to be bonded with this plan. The pipe run cannot decrease in size as indicated on
sheet 16. It appears the entire run should be 42" diameter. (Rev. 1) Comment addressed.
3. Please clarify and provide inlet computations for existing inlets that are receiving flow from this
development. Also, the tables do not appear to be clearly separating sump and on -grade inlets (see
VDOT LD -204). Please ensure all drainage inlets will capture the 10 year storm to carry runoff to
the stormwater management pond. Please clarify which pipes are existing (13 -16) The Storm
Sewer Design table appears to indicate capacity issues, for example: from Ex. 106 to Ex. 108,
from Ex. 114 to Ex. 116, and 7 other pipe sections. Please review and revise as necessary. (Rev.
1) Response on file. —see Note, below
Note— Storm sewer computations are not now found with SWM or ESC plans, but should be.
They are relevant to SWM. Old Trail Village block 1B -3C E &S design relies on revised As -built
drainage areas (DAs). Block 113-3C final pipe grades deviate from design (not by Roudabush,
Gale, & Assoc). This affects sediment basin design. There is a practical need to represent DAs
that contribute to the basin, yet I struggled to piece this information together. As with
computations, individual drainage areas appear on a sheet now removed from the ESC plan. The
Engineering Review Comments
Page 2 of 3
drainage areas shown on Road Plan sheet 4 overstate the DA. The best plan view of existing
sediment basin DA is sheet 9 of a 13 sheet plan set titled Old Trail Village, Block 1, Phase B &
Block 3, Phase C, Final Site and Over Lot Grading Plan. This sheet was brought to a project
meeting May 15, but not included with the revised ESC plan. It appears that 4.44 Ac contribute to
the existing basin. The basin, at 18,897 c.f., is sized adequate for a 5.22 Ac. DA.
At this point, I suspend request for additional detail relating to inlets, capacities, calculations, etc,
and acknowledge VDOT's statement that block 113-3C road plan appears to comply with VDOT
standards and specifications, yet data in the storm sewer design table on sheet 7 of the Road Plan
show point -to -point incremental and accumulated CAs that, using values included in this table
alone, increase CA, point 106 to 108. That certain structures pre -exist does not mean they are
unaffected by development. Runoff from point 20 to point 106 is new, but is carried by existing
pipe. Old Trail Village is a large -scale development, and understanding can be tricky. I am not
insensitive to developmental needs. My hope is that in the future, comments will be taken as
simple request for information for purpose of comparison against limits and standards.
The stormwater management and mitigation plan is approved as noted. The stormwater
management approved with this plan is conveyance to the existing pond across Old Trail Drive.
B. Erosion Control Plan (WPO201300052)
1. Separate out the WPO plans. They cannot be approved as part of a road plan or site plan set.
(Rev. 1) Comment addressed.
2. Provide clear limits of disturbance. (Rev. 1) Comment addressed.
Provide perimeter controls for the initial stage of construction. The plan shows only inlet
protection. Inlet protection cannot be installed until the drainage system is installed. This is too
late. (Rev. 1) Comment addressed /response on file.
4. The pipe run to the pond must be included. Show all measures to install the pipe run to the pond.
(Rev. 1) Comment addressed.
5. The plan note on sheet 9, note 1 on the sequence, and sheet 16, indicate an outfall into a sediment
basin. This sediment basin is not part of this erosion control plan as shown. It cannot be
considered, as it may be removed with other plans. All controls must be shown and detailed on the
plan, and within the limits of disturbance. (Rev. 1) Comment addressed.
6. Update the narrative. This plan has not proposed any checkdams or basic (Rev. 1) Comment
addressed.
7. Revise the sequence of construction. Item #I is not valid. Item #7 appears to be a carryover from
prior plans. Item #2 is not possible, as many inlets have yet to be installed. (Rev. 1) Comment
addressed; sequence of construction deleted.
C. Road plans (SUB201300096)
We a - awaiting a subdivision application and fee for the Ashlar Avenue road plans. This was
Engineering Review Comments
Page 3 of 3
conveyed in an e -mail on 17 Apr 2014. Comment Addressed. —see Note, below
Note- VDOT letter of April 14, 2014 states no objection. Letter, however, makes mention
of Final plat requirements: 42' R.O.W. for Ashlar Ave (v. 39'), and sidewalk and street
tree easement since VDOT will not maintain street trees or pavers along Ashlar Avenue.
Also, VDOT states need for sidewalk and street trees maintenance agreement with
Albemarle County; the County likewise does not accept maintenance responsibility for
pavers or street trees. Given VDOT statement of no objection following their review of
plans titled Old Trail Village Ashlar Avenue Road Construction Plan, dated 7/1/12 with
revisions dated 9/27/13, 1/20/14, 2/11/14, 3/5/14, and 3/24/14 submitted by Roudabush,
Gale and Associates, Inc., and given design response to engineering review comments (13
August 2013 and 4 November 2013), Engineering approves road plan dated 24- Mar -14.
D. Site Plan (SDP201300044)
Comments as posted to County View system on 3/25/14. Previous comments from Michael Koslow
appear to be addressed with this submittal. However, there are still outstanding issues with WPO plan.
Remove the WPO and road plans. They cannot be approved as part of a site plan set.
Comment addressed.
E. Final Plat (SUB201400065)
A complete review of the final plat will be performed when road, site and WPO plans are approved,
and can be matched against the final plat. The following preliminary comments are provided;
1. Easements will need to be recorded for drainage through lots and to the off -site pond.
2. A maintenance agreement will need to be in place for the pond. A copy of a recorded document
should be provided to verify.
3. A Lickinghole Basin pro -rate share fee will be computed with final approval, and this will need to
be paid.
4. Road plans will need to be approved.
5. Bonds will need to be posted. Bond estimate can be requested when plans are approved. Forms
are available on the county website.
Review comments entered in County View (Alabemarle County project tracking system) on 5/28/14
1. Approved and bonded WPO required. WPO Application is under review (WP0201300052 —
requested changes).
2. Approved and bonded road plans required. Review of ACCD records appears to indicate road plans
are not approved.
3. AC Code Ch. 14 § 303.I. requires "a definite bearing and distance tie between not less than two (2)
permanent monuments on the exterior boundary of the property and further tie to existing street
intersection where possible and reasonably convenient." Furnish bearing and distance ties.
4. Public R/W, Claremont Lane, is listed as 55', but elsewhere (road plans/WPO applications) as 61'.
Please revise Claremont Lane public R/W as necessary.
5. The pro -rated share to Lickinghole Creek will need to be paid prior to plat approval. This will be
handled with the posting of bonds.
6. A stormwater management maintenance agreement will be needed. This can occur with the WPO
approval, but needs to happen prior to the final plat approval.
File: WP0201300052- SUB201300096 -Old Trail - 1B -3C- approv