HomeMy WebLinkAboutSUB202100179 Review Comments Road Plan and Comps. 2021-12-14�q off nig
401 McIntire Road, North Wing
County
of Albemarle
Charlottesville, VA 22902-4579
Telephone: 434-296-5832
COMMUNITY
DEVELOPMENT DEPARTMENT
WWW.ALBEMARLE.ORG
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Road Plan review
Project title:
Galaxie Farm Subdivision Road and Utility Plan
Project file number:
SUB2021-00179
Plan preparer:
Scott Collins, PE, Collins Engineering
200 Garrett Street, Suite K, Charlottesville, VA 22902
scott(&,,collins-engineering. com
Owner or rep.:
Galaxie Farm Investments, LLC
600 East Water Street, Suite H
P.O. Box 5386, Charlottesville, VA 22902
alan(a),,riverbenddev. com
Plan received date:
25 Oct 2021
Date of comments:
14 Dec 2021
Reviewer:
John Anderson, PE
SUB201-00179; Engineering review comments:
1. Sheet 21, 22
a. Recommend storm culvert profile compaction label/s for pipes or structures mostly or entirely in
fill section.
b. (Sheet 21) Recommend increase slope slightly, between Str. 42B and 38, which appears possible if
INV OUT, Str. 42B, is slightly shallower depth. Reasoning is that HDPE is somewhat flexible,
and any error during construction (flatter As -built condition) may require additional hydraulic
modeling, or constructive change which may affect or delay bond reduction, or increase project
expense. 0.50% is minimum pipe slope, per Drainage Plan review checklist for plan reviewers.
2. Sheet 19: Engineering defers to VDOT review of (primary entrance) Galaxie Farm Lane culvert headwall
/endwall.
3. Sheet 16: Increase diameter (or increase slope), pipe 36 — 34, since total flow is 99% of full flow capacity
of pipe.
4. Sheet 14
a. t� Str. 32 appears high. Please check and revise, as needed.
b. t� Str. 12 and 14 would appear to be similar but are not. Please check t. for these structures and
revise as needed.
5. Sheet 10
a. Pavement design: a =1.67, unless h + b > 4.5 inches, ref. p. 34, .PDF document at:
httos://www.virginiadot.org/business/resources/Materials/Pavement Design Guide for Subdivisi
on and Secondary Roads.odf [ 2018 VDOT Pavement Design Guide for Subdivision and
Secondary Roads in VA ] Please revise table, with a =1.67 for Marie Currie Court, and Rubin
Vera Place.
b. Provide section, Galaxie Farm Lane, Sta. 16+82 to end project, Galaxie Farm Lane, Sta. 23+25f.
See profile, sheet 18.
6. Sheet 9
a. Acquire off -site grading easement to construct proposed improvements (including grading) to
Galaxie Farm Lane. Neither sheet 5 or 9 clarify how (or ensure that) proposed grading or
improvement to off -site portion of Galaxie Farm Lane (located on School Board property) is
possible, absent easement. Discussion may help. Please feel free to call (434.296-5832-0069).
Engineering Review Comments
Page 2 of 2
b. Submit sealed geotechnical retaining wall design at earliest convenience. Appreciate preliminary
retaining wall design data provided with this sheet.
c. Provide copy of recorded retaining wall maintenance agreement for walls crossing one or more lot
lines.
d. Please provide retaining wall handrail labels, either with Grading and Drainage plan sheets (8 and
9), or with Site Plan sheets (4 and 5).
7. Sheet 5
a. Provide street name sign for Vera Rubin Place.
b. Provide and label speed limit sign/s.
8. Sheet 4
a. Provide and label speed limit sign/s.
b. Label Marie Curie Court street name sign.
c. Label Mary Jackson Court street name sign at SW comer of intersection with Galaxie Farm Lane.
d. Coordinate MOT plan with VDOT for work within public right-of-way, state route 20.
e. Recommend CG-2 (or CG-6) at north end of Mary Jackson Court, to prevent asphalt pavement
degradation.
f. Label Cow Branch, across plan sheets.
9. Sheet 3
a. Please confirm that Lot 6 buildable area listed in table excludes preserved slopes (see 18-4.2. La.),
if not, please revise buildable area listed, and ensure area meets requirements for proposed
subdivision.
b. Please delineate buildable area, Lot 6 (provide linework), and label buildable area.
10. Sheet 1: Please revise SUB202000098 to SUB202100179, since ROAD Plan is assigned this file #.
Thank you.
Please call if any questions — tel. 434.296-5832-x3069, or email ianderson20albemarle.org.
SUB202100179 Galaxie Fann RP 121421.docx