HomeMy WebLinkAboutSDP201400009 Review Comments 2014-02-26 kxi ,
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COMMONWEALTH of VIRGINIA
DEPARTMENT OF TRANSPORTATION
1601 Orange Road
Culpeper,Yrgmma 22701
Charles A. Kilpatrick,P.E.
Commissioner
February 26, 2014
Mr. Johnathan Newberry
County of Albemarle
Department of Community Development
401 McIntire Road
Charlottesville, VA 22902
Re: SDP-2014-00009 Old Trail Blocks 28,29B - Final Site Plan
Dear Mr. Newberry:
We have reviewed the final site plan for Old Trail Village, Blocks 28 & 29B dated January 31,
2014 as submitted by Roudabush, Gale &Associates, Inc. and offer the following comments:
1. The sight distance lines appear to originate at 10' from the nearest through lane. This
distance needs to be 14.5' and the sight distance and need for sight distance easements
need to be evaluated based on the new sight lines.
2. If possible, the water service connection for Lot 21 should come from the waterline
located on Private Street `A' so that Golf Drive will not need to be open cut.
3. All deflections of the storm sewer should be at least 90'. It appears that the angles are
less than 90° at structures 111-105-112, at structures 100-117-115,and at structures 130-
128-126.
4. Rather than running storm sewer from structure 117 to 115, could the storm sewer run
from 115 to 100 to the structure near the intersection of Road `M' and Golf View Drive?
5. Will there be a need to connect the waterline shown on Ashlar Avenue to the proposed
12"dry waterline between Road `L' and the roundabout? If so, this connection should be
made during construction of Ashlar Avenue so that roadway will not need to be open cut
in the future.
6. The intersection connections of the roadways should be built and reflected as vertical
curves on the profiles.
7. The profile for Golfview Drive should include the elevation and grade for the road
extension at station 17-54 -r"- as shown in the approved plans for Block 35A.
8. Is Golfview Drive going to be built to station 24-00 as shown on the profile or to station
21-19 as shown on the plan view?
9. The station and elevation of Road L should be shown on the profile for Golfview Drive.
10. The elevation of Ashlar Avenue should be added to the intersection shown on the profile
for Road `M'.
11. The Public Road noted on the profile for Ashlar Avenue should be labeled as Road L and
the appropriate elevation should be added.
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12. It is difficult to distinguish the existing elevations on the profiles,but it appears that CD-
1's are required and should be shown on the profiles at the following locations:
• Road L- Station 12+58 +r-
• Road L— Station 13+55 +1-
• Golfview Drive_ Station 19+65 +,• Road M- Station 13+70+1-
• Road M-- Station 16+25 +_-
• Ashlar Avenue—Station 14+90+1-
13. The storm sewer profiles should be shown on separate profiles. There is currently too
much detail on the profiles to accurately compare the information with that in the
calculations. In addition, it will be difficult to obtain accurate information from the
current profiles to construct the storm sewer.
14. Final review of the storm sewer calculations is pending the clarification of the storm
sewer profiles.
15.The plan view for the streets should clearly identify the on-street parking for Road `L'.
16. Pavement design calculations need to be submitted for review.
17. The sight lines should be added to the landscape plan to determine if the proposed street
trees will impact the available sight distance at each intersection.
If you need additional information concerning this project,please feel free to contact me.
Sincerely,
/./11)-
Troy Austin,P.E.
Area Land Use Engineer
Culpeper District
WE KEEP VIRGINIA MOVING
June 9, 2014
Mr. Jonathan Newberry, Planner
County of Albemarle
Dept. of Community Development
401 McIntire Rd,NW
Charlottesville, VA 22902
RE: SDP201400009 Old Trail Blocks 28,29B—Final Site Plan
Dear Mr.Newberry,
I have reviewed and addressed your comments. The individual responses to those
comments are below.
Planning
1. On Sheet 1, please change the subtitle from"Site & Subdivision Plan"to "Final Site Plan".
Title on Cover Sheet revised. In addition, plans have been split into a WPO, A Road Plan
and a Site Plan.
2. On Sheet 1, under General Notes, please remove the note regarding development rights.
Revised accordingly.
3. On Sheet 1, please list the setbacks for each block.
Setback Table and Area Summaries have been provided.
4. On Sheet 1, please provide the density and area summaries for each block.
Setback Table and Area Summaries have been provided.
5. [Code of Development] Please submit a variation for a reduction in setbacks where
applicable.
Variation request submitted under separate cover.
6. [General Comment] Upon resubmittal, please reflect the combination of Lot 13 in Block
29B with Lot 1 in Block 29A as reviewed under application number SUB201400032. OK.
7. [14-233, 14-234/General Comment] The current configuration of Private Street `A' does not
show planting strips or sidewalks, nor does it have private street approval. Please submit a
private street authorization request with waivers for planting strips and sidewalks. This is
consistent with the process for private streets in Block 14.
Private Street Authorization request submitted under separate cover.
8. [32.6.2(i)] Parking and loading areas. Please show details for any desired on-street parking.
On Sheet 1, please provide a parking schedule.
A parking schedule has been added to the cover sheet.
Nor' NNW'
9. [32.6.2(k)] Outdoor lighting. If any outdoor lighting above 3,000 lumens is proposed, please
submit a photometric plan and show the location of each luminaire. If none is proposed, then
please add a note on Sheet 1 that states "There will be no outdoor lighting above 3,000
lumens". Noted.
10. [32.7.9.8] Tree Canopy. On Sheet 25, please display the canopy (in sq. f) for each type of
plant to confirm the amount of canopy proposed meets the canopy requirement. Noted.
E911
1. The applicant should submit three (3) road name requests for each of the following: "Private
Street A", "Road M", "Road L", and "Private Alley A, B, C" before approval is given.
Noted.
Engineering
1. Site plan:
a. Please update the topography to within one year of submittal date. The topography
should at least be field verified and stated on the plan with a date of verification. [14-
302, 18-32.5.2, policy]
Topography is accurate at the time of plan submittal. Noted accordingly.
b. Lot#20 driveways is shown across "Open Space" and appears to have adequate room
on the lot for the driveway. Recommend moving driveway off"Open Space" lot.
Client driven location for driveway.
c. Storm drain pipes are missing from sheet 5 of 26.
Site Plan shows above ground features only. See Grading & Utility Plan for u/g
Utilities.
d. Please provide a bench mark location, elevation and datum for topography. [policy]
Added accordingly.
e. Proposed grading has a mix of contour intervals making the topography difficult to
decipher. Please pick either the 1' contour or the 2' contour for consistency.
Contours revised to reflect 2' intervals.
f Please make sure match lines are correct and page numbers are accurate.
Match-line & sheet references revised to reflect the plans set changes.
g. Please show all buffer limits on plans.
WPO buffers added to the plan sheets.
h. Buffer disturbance will need a mitigation plan.
Except for the perpendicular storm sewer outfall pipe,we have avoided the buffer
impacts at this time.
i. Please show critical slopes on the plans. [18-4.2, 14-304]
There are no critical slopes located within the development area.
j. Please show the easements on the plan and check the depth to easement width for
excavation limits. [18-32.6.2.g] See table on Sheet 14.
k. Please show sight distance lines on landscape plan to verify unobstructed sight
easements. Trees may need to be moved out of lines of sight. Added.
1. Please show road name and traffic sign locations on the plans. Signage added.
m. Please change the line weight for existing pipes so they will not be counted as
proposed. Existing shown as dashed/lighter to distinguish existing from
proposed.
2. Drainage and road:
a. Please show the Stormwater drainage easements on the site plan. [Code Sec. 18-
32.5.2, 18-32.6.2.d]. Existing& proposed easements are shown on the site plan.
b. Future storm drainage systems shall have an outlet to prevent them filling with water
over time. [structure 144] Noted for inlets to be watertight until future storm
sewer construction.
c. Please show VDOT designations for entrances on the plan. Duplex Entrance
location shown.
d. VDOT approval is required for final plan approvals. OK.
e. Fire/rescue department approval is required for final plan approvals. OK.
f. Alleys will be designed to prevent stormwater flows from entering intersections.
Please use the rural street intersection criteria of continuing the -2% cross grade for a
minimum 20' from the edge of pavement of the intersected street down the alley to
provide a low point off the intersected street for drainage. Profiles now reflect the
true CG-11 conditions at the proposed intersections.
g. Please show Cross-drain locations on plans at every major cut fill transition or sag
with VDOT designations. CD-2 & CD-1 locations added to profile and details
provided.
h. Please update all standard notes as shown in the ACDSM. Notes updated to the
latest version.
i. Please check angles of deflections on storm water system. Drainage pipe angles need
to be 90 degrees or greater. For example stormwater structures 110 and 117 appear to
be less than 90 degrees. Since deflected storm sewer pipes are unacceptable to
Albemarle, additional inlets were added to provide separation and provide 90
degree junctions at the inlets.
j. Please provide drainage profiles for the entire stormwater system. Independent
profiles have been added to include all proposed storm pipes.
k. Please show inlet shaping for stormwater manhole junctions to reduce the risk of
standing water/breeding areas for mosquitoes. Inlet shaping has been added to all
inlets per direction.
1. Pipes with slopes less than 0.5% are too flat and may not be self cleaning. Albemarle
County Policy is for all stormwater systems will have a minimum 0.5% slope. The
design manual refers to minimum cleaning velocity and not a minimum slope
condition. If actual policy dictates 0.50%, then the design manual should be
updated to reflect the actual requirements. Pipe Slopes were increased to
provide the 0.50% as requested.
3. Stormwater Protection:
a. Stormwater management proposal will be addressed by the County Engineer.
The WPO plan for Upper Ballard as been designed to provide both water quality
and 10 yr Pre-Post detention for the western portion of Old Trail Village, including
the addition of the Block 3A & Old Trail Drive drainage. See UB Pond routings.
4. Erosion and Sediment Control:
a. Blocks 29A & 35A do not appear to be shown correctly. Please show the existing
topography now that grading has occurred on Blocks 29A& 35A. [14-302, 18-32.5.2,
policy] Grading has been revised to reflect the current topography.
b. Bulk grading plan has a mix of 1' and 2' contour intervals and is inconsistent. Please
pick one contour interval to reduce misinterpretation of proposed grading. Contours
now depict 2' contours.
c. Double row of silt fence do not typically work and are difficult for the contractor to
maintain. Please show a sediment trap in the lowest area near the pond. It can be
filled in after site stabilization to finished contours shown. The sediment basin,
located at the existing low point of this area will prevent any runoff from
entering Upper Ballard pond. As such, the implementation of a small fill
diversion along the existing WPO buffer will protect the pond from any
sediment latent runoff and direct all runoff into the basin until the site becomes
stabilized. The super silt fence along Upper Ballrd has been specified w/
chainlink backing.
d. Please show temporary/permanent seeding on the "Bulk grading Plan". Seeding will
not be required unless project or portions of project will not be completed within the
9 month land disturbance time limit. [Code Sec.17-207.B.2] Seeding, both
temporary and proposed is shown on the EC and bulkgrade plans.
e. Sediment basin construction details are required.
Details of the proposed sediment basin, the actual storage for the sediment basin
both before fill operations and after bulkgrading were both shown to provide ample
storage per the specifications.
f. Sediment traps with diversions that bisect the site do not work in the field and are a
burden to both the contractor and inspector to maintain the drainage divisions. Can
this side of the project be piped to the sediment basin?
The sediment traps are being provided to isolate the future pad ready areas from
running off into proposed Ashlar Avenue. The sediment basin is sized to receive all
disturbed areas and runoff. The sediment traps have been included to reduce the
burden on the temporary basin, as well as to provide additional storage and volume
more close to the area of destabilization. Piping the inlets to the pond would be
temporary, costly and subject to change.
g. Blocks will need E&SC protection to keep mud off the new road construction. This
office recommends a sediment trap behind inlet structure #112 with a pipe into the
back of structure#112. The storm sewer will be utilized as temporary conveyance
measure for the development area. Cleaning of the storm pipes is noted and will
be required prior to acceptance by VDOT.
h. Silt fence or earth berm draining to control structures should be placed behind
sidewalks to protect the new road and sidewalk areas from sedimentation until the
vegetation is established. Silt fence has been added to isolate the lot construction
from the roadways.
i. Please remove proposed 1' contours or make the whole plan with 1' contours.
1' contours have been removed.
j. Please show the stock pile locations on the plan. Potential stockpile area shown
k. Please show staging and parking areas for the contractors and other construction
related areas. Potential staging areas shown.
Fire and Rescue
1. Once the No Parking signs have been approved for the streets less than 36 ft FC/FC Fire
Rescue will sign off with No Objections. No parking signs added to alleys.
VDOT
1. The sight distance lines appear to originate at 10' from the nearest through lane. This
distance needs to be 14.5' and the sight distance and need for sight distance easements need
to be evaluated based on the new sight lines. Sight distance shown at 14.5' from ep.
2. If possible, the water service connection for Lot 21 should come from the waterline located
on "Private Street A" so that Golf Drive will not need to be open cut. OK.
3. All deflections of the storm sewer need to be at least 90°. It appears that the angles are less
than 90° at structures 111-105-112, at structures 100-117-115, and at structures 130-128-126.
4. Rather than running storm sewer from structures 117 to 115, could the storm sewer run from
115 to 100 to the structure near the intersection of Road "M" and Golf View Drive:
Proposed road sag condition prevents this solution.
5. Will there be a need to connect the waterline shown on Ashlar Avenue to the proposed 12"
dry waterline between Road "L" and the roundabout? If so, this connection should be made
during construction of Ashlar Avenue so that the roadway will not need to be open cut in the
future. They will not need to be connected within Ashlar Avenue.
6. The intersection connections of the roadways should be built and reflected as vertical curves
on the profiles. Profiles and intersection grades have been detailed to reflect the CG-11
or vertical curve conditions.
7. The profile for Golf View Drive should include the elevation and grade for the road
extension at station 17+54+ as shown in the approved plans for Block 35A. OK.
8. Is Golf View Drive going to be built to station 24+00 as shown on the profile or to station
21+19 as shown on the plan view? End Construction stations and labels added.
9. The station and elevation of Road "L" should be shown on the profile of Golf View Drive.
Intersection labels, elevations and stations added for clarity and completeness.
10. The elevation of Ashlar Avenue should be added to the intersection shown on profile for
Road"M". Intersection labels, elevations and stations added for clarity and
completeness.
11. The public road noted on the profile for Ashlar Avenue should be labeled as Road "L" and
the appropriate elevation should be added.
12. It is difficult to distinguish the existing elevations on the profiles, but it appears that CD-1's
are required and should be shown on the profiles at the following locations: CD-1 & CD-2
added to the plans set.
13. The storm sewer profiles should be shown on separate profiles. There is currently too much
detail on the profiles to accurately compare the information with that in the calculations. In
addition, it will be difficult to obtain accurate information from the current profiles to
construct the storm sewer.
a. Road L— Station 12+58 ±
b. Road L— Station 13+55 ±
c. Golf View Drive—Station 19+65 ±
d. Road M— Station 13+70±
e. Road M—Station 16+25 ±
f. Ashlar Avenue— Station 14+90+
Independent profiles added to simplify their appearance.
14. Final review of the storm sewer calculations is pending the clarification of the storm sewer
profiles. OK.
15. The plan view for the streets should clearly identify the on-street parking for Road "L".
Based on the proposed section, on-street parking is to be intermittent and 2 off-street
parking spaces shall be provided on each lot.
16. Pavement design calculations need to be submitted for review. OK.
17. The sight lines should be added to the landscape plan to determine if the proposed street trees
will impact the available sight distance at each intersection. Added.
Nome Now,
of AL
gallkwil
County of Albemarle
Department of Community Development
Memorandum
To: Chris Mulligan(CMulliganga,roudabush.com)
CC: Bill Ledbetter(BLedbetter @roudabush.com)
From: J.T.Newberry(jnewben-yaalbemarle.org)
Division: Planning
Date: September 12,2014
Subject: SDP201400009 OTV Blocks 28 and 29B—Final Site Plan
The Planner will recommend approval of the plat referred to above when the following items have been satisfactorily
addressed. (The following comments are those that have been identified at this time. Additional comments or conditions
may be added or eliminated based on further review.)
Planning
1. [General Comment] The private street authorization request is scheduled to be heard on the consent agenda at the
September 16,2014 Planning Commission meeting.
2. [General Comment] The variation request for 5' setback lines in Block 28 and 29B is scheduled to be heard on
the consent agenda at the October 8,2014 Board of Supervisors meeting.
3. [General Comment] The alignment of the walking path for the lots that front on Hazel Grove Lane(as provided
on a separate exhibit dated September 11,2014)looks good. Please show it accordingly on the site plan.
4. [General Comment] Please show the current property lines for Lot 1 in Block 29A to reflect the approval of
SUB201400032(BLA with Lot 13 in 29B).
5. [General Comment] Consistent with other Old Trail site plans,please provide an updated table showing the
cumulative impact of Blocks 28 and 29B on the overall development(as shown below).
6. [Section 32.6.2] A total of 69 parking spaces are required because one guest parking space is required for every
four duplex units. Please show where at least three guest spaces will be provided on the site plan or on a separate
exhibit. Additionally,please show how the parking will be provided in a table that shows"X"number of spots
are"provided on lots"and"X"number of spots are"provided on-street."
7. [Section 32.7.9.5] On Sheet 20,please provide one additional street tree for Golf Drive and the proposed section
of Golf View Drive.
Please contact J.T.Newberry at 434-296-5832,ext. 3270 or jnewberry(a�albemarle.org for further information about the
comments above.
PROPOSED DEVELOPMENT (CUMULATIVE OF ALL BLOCKS SUBMITTED FOR OLD TRAIL VILLAGE)
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