HomeMy WebLinkAboutSUB201300030 Review Comments Road Plan and Comps. 2013-09-16i"
,. `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: Westlake Hills (Phase 1) — Road Plans SUB201300030
Plan preparer: Collins Engineering [434- 293 -3719]
Owner or rep.: Lickinghole Creek, LLC
Plan received date: 10 September 2013
Date of comments: 16 September 2013
Reviewer: Michael Koslow
Review Coordinator: Michael Koslow
The third submittal of the road plan set (SUB201300030) submitted 5 September 2013 has
received Engineering Review and does not appear to meet Albemarle County minimum checklist
items for approval. This review does not include a review of Erosion & Sediment Control or
Stormwater Management. Please adequately address the following comments for final approval:
A. Application Information
1. Please revise sheet titles on sheets 8 & 9 to reflect intent of these sheets to also function as
an overlot grading plan (e.g. could be titled "Phase 1 Grading Plan and Overlot Grading Plan ")
B. Proposed Plan View Information
1. It appears that sight distance easements are needed for the NE corner of Colorado Road
and Eastern Connector road and the SW corner of Guadalupe Drive and Lavaca Court. Please
include these on sheets 5 & 6.
2. Please indicate striping between proposed NB and SB travel way for Eastern Connector
just north of Colorado Road. Please indicate left turn arrow or combined through -left arrow for
NB Eastern Connector at Jonna Street.
3. Please regrade the end of Guadalupe Drive at the cul -de -sac. Structure #4's rim should be
the low point to ensure that runoff would not inundate the houses in proposed lots 36 or 37 should
the drainage system fail. Detail grades around the cul -de -sac would suffice.
4. Please include station ticks at minimum 50' intervals for all proposed public roads
including Eastern Connector Road, Lavaca Court, and Colorado Road on sheets 4 and 5.
Please label all proposed drainage pipe runs in plan view (could be on sheets 8 & 9).
Engineering Review Comments
Page 2 of 2
E. Street Profiles
1. Three out of four vertical curves for Eastern Connector Road appear to have substandard
"V values for 35 mph design speed. Will defer to VDOT regarding geometric standards.
2. Please include cross drains (CD -1,2) at every major cut and fill transition point including
for Connector Road and for Guadalupe Drive near stations 20 +00 and 24 +00.
3. Please include all utility crossings including water main crossing Eastern Connector Road
near station 21 +95.
4. Please include all drainage pipe runs crossing Eastern Connector Road including:
F58B -F58, 74D -74B, F56 -F54, F5213-F52, F4413-OUT, F46B -F46, F50 -F48, 30 -28
5. Please include all drainage pipe runs crossing Lavaca Court including:
78D -78B, 80 -78, 70 -68
6. Please include all drainage pipe runs crossing Guadalupe Drive including:
76 -74, 72B -72, 70B -70, 82 -66, 86 -84, 90B -90, 92B -92, and 96 -94
7. Please consistently label Eastern Connector Road in profile view (i.e. please change the
profile name from "Connector Road" and the notes from "Eastern Avenue Connector ").
F. Drainage Profiles
1. Label on sheet 19 "STR 42 — STR 20" appears to refer to structure 42 — 38. Please revise.
2. Label on sheet 21 "STR F62 — STR 1710413" appears to refer to structure F58 — OUT.
Please revise.
3. Please include all proposed utility crossings including proposed water main crossing pipe
81 on sheet 20 and drainage pipe F51 crossing Culvert 13 +80 (Eastern Connector Road) on sheet
21.
F. Drainage Calculations
1. Pipe runs from Structures 2 to 1B and from 1B to out appear to have excessive flow
velocities ( > 15 fps). Please redesign these structures to reduce proposed flow velocity to < 15
fps.
2. Please provide calculated flow capacity for pipe run from Structure 68 to 66. It appears
that it could be lower than the calculated flow in a 10 year storm event. If the capacity is less than
the calculated flow, please redesign this pipe run for adequate capacity.
Community Development Engineering is available from 2:30 -4 PM on Thursdays to discuss these review
comments. Please contact Michael Koslow at 434 - 296 -5832 ext. 3297 or email mkoslow @albemarle.org
to schedule an appointment.
Fite :C:\ Users \mkoslow\ Documents \CurrentReviews \SUB201300030 Westlake Hills (Phase 1) - Road
Plans \E3 RP MAK SUB - 2013 -00030 Westlake Hills Phasel -Road Plans.doc