HomeMy WebLinkAboutSUB201400207 Review Comments Road Plan and Comps. 2015-01-27 (3)Al
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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project: Cascadia Blocks 1 —3 Final & Road Plan
Plan preparer: Dominion Engineering
Owner or rep.: Cascadia Development LLC
Plan received date: 11 Dec 2014
Date of comments: 27 Jan 2015
Reviewer: Michelle Roberge
Engineering has completed the review of SDP201400075 and SUB201400207. Please address the
following comments.
Final Site Plan
1) On sheet SP4, there should be a diversion from the scc to pond 2.
2) On SP4, show the remaining managed slopes.
3) Show dumpster pad detail.
4) There is a 6' wide min sidewalk requirement for sidewalk in front of bldg. Please dimension.
5) The northern parallel parking in the commercial area will be difficult to maneuver. Please address.
6) Label CG -2 on commercial parking. Show detail.
7) Relocate spot elevation for dumpster pad to be legible. The site shall be designed so that
stormwater does not run through, and drains away from, areas where dumpsters are located in
order to minimize the potential for contaminating stormwater runoff due to contact with solid
waste.
8) It appears another wall will be necessary behind lots 18 and 19 to avoid grading over sanitary
sewer mh. However, it also appears the geogrid will extend beyond bldg foundations for lots 16-
19. Please address.
9) The geogrid appears to extend beyond bldg foundation of lot 22. Please address.
10) All retaining walls facing Rte 20 will require ARB approval.
11) Show a crosswalk at entrance of commercial area.
12) Show low maintenance ground cover, not grass, for all areas with 2:1 slopes. See the following
areas: Area near str 14C, slopes adjacent to stairs, north of lot 6 near retaining wall, near lot 22,
near north of commercial bldg, within Park A, etc. This can be shown with landscaping plan.
13) It does not appear you are meeting Proffer 1 (G) and (H). Please verify and address.
14) Show calcs for existing 7A and downstream stormsewer, where 43 ties into. Verify that existing
24" HDPE is adequate. Do the same for existing 5.
15) 15" pipes are the minimum requirement. Revise 12" stormsewer pipes.
16) 58A will be prone to clogging. How will it be constructed with the SCC? Also, the grate will not
capture entire runoff and area is subject to erosion. Divert excess runoff to an adequate outlet. Can
existing sediment trap be converted to a permanent BMP? Show access road to BMP.
17) Profile and calculations should match. Please address for downstream pipes after str 37, 36, 31 and
30.
18) Please show profile for 46A -46.
Engineering Review Comments
Page 2 of 3
19) For str 32 -31, show drainage easement on lot 59.
20) For str 1413-14 A, revise drainage easement to include pipes.
21) For str 62 -ex 5, show drainage easement.
22) For str 9 -ex 3, show drainage easement on lot 37.
23) Show existing SWM easement and access easement for pond 1.
24) Remove plantings on drainage easements. For example, see str 22 -23. Verify for other locations.
25) Match Ex2 and Ex 3 downstream pipes with approved site plan from Blocks 4 -7. Please verify
they match.
26) Show details for nyoplast dome grates.
27) Verify direction of flow change in each drainage structure is 90 degrees or greater: 48- 46, 45 -44,
27A -26, 21 -19, and 8A -7.
28) Show all DI structure details.
29) It appears you are showing grinder pumps. Please show a private onsite central sewerage system
for those lots. Then it can be pumped to tie into the public sewer system. Please discuss with
Road Plan
30) Per proffer 2, VDOT approval is required for proposed 20' additional public R/W along the edge
of existing Rte 20 right of way. The owner shall dedicate to address future potential improvements
along Rte 20.
31) The interconnection for Broadus Baptist Church is shown. The 30' wide easement is centered
along the trail. If a future connection is to be made, how will an adequate driveway be built if the
retaining wall from the commercial building abuts the trail? Also, slope east of pond 2 will need to
be regraded, but it is already at 2:1 slope. If a wall is built, it will be subject to ARB review. Please
address.
32) It appears Knoll Lane is proposed as a one way road since it cannot meet VDOT sight distance
requirements for vehicles turning into Delphi Lane. I recommend ending Knoll Lane with a cul de
sac and adding landscaping for screening. Also, increase road width to 24' wide with 2% cross
slopes (typical VDOT cross - section) with no parking signs on both sides. Discuss with Fire
Rescue.
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33) Please remove the perpendicular parking on Knoll Lane.
34) If the subdivision plats will be phased, note the road plans will need to be delineated to match
phasing plan with proper turnarounds. We have a policy that one road plan with appropriate title
should correspond with subdivision plat phase.
35) Label all signs on road plan.
36) Show intersections within a road profile. Label elevation and station.
Engineering Review Comments
Page 3 of 3
37) Show sidewalk detail per VDOT standards.
38) Road plans shall be approved by VDOT, Fire Rescue, and ACSA.
Current Development Engineering is available from 2:30 -4:00 PM on Thursdays to discuss these review
comments. Please contact Michelle Roberge at 434 - 296 -5832 ext. 3458 or email mroberge(&albemarle.org
to schedule an appointment.