HomeMy WebLinkAboutSDP200900039 Review Comments Major Amendment, Final Site Plan 2009-07-07*-&A
County of Albemarle
Department of Community Development
Memorandum
To: Summer Frederick, Current Development Project Planner
From: Phil Custer, Current Development engineering review
Date: 7 July 2009
Subject: Martha Jefferson Hospital Major Amendment, Road Design (SDP- 2009 - 00039)
The revision to the major site plan amendment, received on 15 June 2009, has been reviewed. The
engineering review for current development can recommend approval to the site plan after the following
comments are addressed.
1. This plan requires private road approval by the Planning Commission. The applicant
briefly mentioned their request for a private road in their application; however, the request
must be written as described in Section 14 -234 specifying which circumstance the waiver
request is being petitioned under (14- 233.A.1, 2, or 3). Engineering review will comment
on the waiver request in a separate memo once it is submitted. A sheet showing the
overall road network (at close to 200 scale) with all of the hospital entrances designated
may be helpful for the Planning Commissions review of the waiver.
(Rev. 1) Comment has not been addressed. A letter requesting this waiver has not been
received. Engineering analysis of this issue will be given in another document.
2. In the development areas, all new private or public roads require curb and gutter. [ 14-
410.H] Please also include in the private road waiver request justification for a curb and
gutter waiver as outlined in section 14- 225.1. Any other road standard waiver should also
be requested at this time. Engineering review will comment on the waiver request in a
separate memo once it is submitted.
(Rev. 1) A letter requesting a waiver of curb and gutter has been received. Engineering
analysis of this request will be given in another document.
3. If this road plan is approved, it will replace the existing approved road plan for this section
of Willis Drive. When the time comes for the roadway to be upgraded to full buildout, a
new road plan will need to be reviewed and approved by VDOT and the County. Please
also remove references to ultimate design in both the plan and profile.
(Rev. 1) Comment has been addressed.
4. Please provide the rural road cross - section detail that will be utilized roughly from Sta.
204 +60 to 216 +40.
(Rev. 1) The grading on the sheet 3B does not appear to match the section provided.
Also, ditches must be dimensioned at 3:1 with a minimum distance from the shoulder
to the channel center of 4ft.
5. Please provide an ADT estimate for each segment of Willis Drive up until the time of
conversion to the curb and gutter section. The pavement, vertical alignment, and
horizontal alignment should be designed for the maximum ADT. The existing pavement
along Willis Drive will need to be upgraded to the strength needed to carry the increased
traffic.
(Rev. 1) Pavement thickness, horizontal alignment, and vertical alignment appear to
adhere to state standards. Borings should be performed on the existing portion of
Willis to determine what improvements need to be made in order to get the thickness
index of 22.
Current Development
Engineering Review Comments
Page 2 of 2
6. The minor amendment approved for the 1575 State Farm parcel will expire on July 1S`
2014. If the site is not constructed by that date, the site plan amendment will expire and a
new amendment will be required when Willis Road is widened to its full section.
(Rev. 1) This comment has been noted by the applicant.
7. Please clearly delineate where the public ROW line will terminate.
(Rev. 1) Comment has been addressed.
8. In the drainage profiles, please label all DI -7 or DI -5 structures proposed at this time as
such and include only one rim elevation for each structure. When the full buildout road
plan is approved, the conversion of the grate inlets to curb inlets will be reviewed and
approved at that time.
(Rev. 1) Comment has been addressed.
9. Contours do not appear to be continuous. Please check all lines to make sure the grading
is shown correctly.
(Rev. 1) Comment has been addressed.
10. All curblines and other improvements on the OCC site should match the approved minor
amendment (SDP- 2008 - 00089).
(Rev. 1) Comment has been addressed.
11. Because the 50ft public ROW will not be dedicated in this phase, please show all drainage
easements to their full width. The width of the drainage easement should be computed
based on the equation found in the design manual (minimum 20ft).
(Rev. 1) Comment has been addressed.
12. Please provide channel calculations for the roadside ditches.
(Rev. 1) Channel calculations should be adjusted based on Comment #4.
13. Safety slabs are required in all structures deeper than 12ft.
(Rev. 1) I do not see where a bolted down cover for structure 6 -11 is specified.
14. Please show all cross drains and storm sewer crossings in the road profiles.
(Rev. 1) Comment has been addressed.
File: E1_fmj_PBC_sdp200900039.doc