HomeMy WebLinkAboutWPO201300027 Correspondence 2013-04-16 *• rat I'IRGINXP
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: Old Trail Village Block 35A& 29A
WPO201300027, SUB201300054
Plan preparer: Bill Ledbetter
Owner or rep.: March Mountain Properties LLC
Plan received date: 16 April 2013
Date of comments: 8 May 2013
Reviewer: Max Greene
The Water Protection and Road Plans (WP0201300027, SUB201300054) submitted 16
April 2013 have received Engineering Review and do not appear to meet Albemarle
County minimum checklist items for approval. Please accept the following plan revisions
& comment responses for final approval:
A) Road and drainage plans(SDP200400042)
71) VDOT approval is required. Comments will be forwarded when received. [DM905]
to/DOcomments responses attached; plans were revised to address comments.
T Sheet 7 of 13 details for future public road with 61`private right of way will require
VDOT approval.
Typical Road Sections &Pavements Section included in construction plans. Pavement Design
forms included within submittal package.
3) Street tree counts don't appear to match up with the plans. Please revise.
Tree Counts revised & corrected to meet minimum requirements. Additional Street
trees added along Golf Drive.
B) Storm water Management and Mitigation Plan (WP0200500007)
✓ i) The pond shown is not an approved Storm Water Management Structure at this time.
Please Submit drainage area plans for the pond and calculations to verify previously
approved plans for block 4 of the Old Trail Town Center#WPO201000041 were
constructed as designed and add the proposed additional impervious area for this site.
Proposed Sediment Trap#1 will be converted to a Bio-Retention Facility for
Water Quality Compliance.
C5V2) SWM agreement is required for the pond to be utilized as a SWM basin.
An SWM agreement will be provided.
rtgineering Review Comments
Page 2 of 3
I Stormwater pipes with a diameter 15" to 42"will have access points spaced a maximum
300' apart for maintenance and inspection.
An additional inlet was added to provide better access.
C) Erosion Control Plan (WP0200500007)
lease certify the topography is current and accurate as of the time of plan submittal.
Note added to the cover sheet.
.!2'} Please update the general E&SC notes on the plan. The notes can be found in the
Albemarle County Design Standards Manual. There appears to be several duplications of
notes on the plan and need to match or removed from the plan.
http://www.albemarle.org/upload/images/forms_center/departments/community_develop
ment/forms/design_standards_manual/Albemarle_County_Design_Standards_Manual_22
Oct2012.pdf
Narrative,Notes&Details updated and revised describing site specifics,only.
V3) Please place the Albemarle County Paved Wash Rack detail on the plan. Added Detail.
Drainage area to sediment trap appears to be 3+ acres and will require a sediment basin.
The basin will need to be designed for the largest drainage area involved with
development. I.e. Pre, during, or post development drainage areas.
An additional sediment trap was added with accompanying diversions to maintain under
2.99 acres draining to each sediment trap during each stage of construction.
i Storm pipe system appears to be lower than the Sediment control structure. This plan
appears to show the pipe inundated with stormwater up to the level of the E&SC outlet
structure. Please clarify, and show the pipes not backing up with sediment laden
stormwater. The Sediment Trap has been relocated to prevent sediment latent water
from remaining in the storm sewer system. Only Pipe#2 remains temporarily
inundated.
- )- Please show the existing tree lines as of time of submittal.
Existing Treeline & Trees added.
XLimits of disturbance do not appear to encompass all work proposed with this plan.
Please include all work proposed with this plan or gray it out so it is clear it will not be
constructed with this permit. Limits of Disturbance revised to correctly reflect and
includes the entire construction area.
Narrative states notistockpiles will be on site. Please add, "All excess material to be
hauled to an approved site with adequate protection." Note added.
Please show the location of the"Enhanced Ball Field" as stated in the E&SC Narrative.
Narrative revised.
,XQ)Please show how MS-19 is adequately addressed from the end of Stormwater System to
pond. MS-19 computations provided for all ditches and culvert pipes. Due to the
size of the contributing watershed, the assumption of channel adequacy was made
from the existing pond, downstream.
.
,,,,,,Y ivitineering Review Comments
Page 3 of 3
D) Planner for Zoning and Current Development has the following comments:
1) On Sheet 5, please show required street trees along the sidewalk on Golf Drive.
Street trees along Golf Drive added. Existing Sanitary Sewer and proposed sight
distance easement is prohibitive to the meeting the street tree requirements.
2) On Sheet 5, please update the plant list to show the correct number of each type of tree.
Currently, there appear to be 13 QP, 10 PA and 4 FP trees. Street tree schedule revised
to include Golf Drive. Tree counts verified for consistency.
E) Building Inspections department has "No Objection"to the approval of this submittal.
F) Fire and Rescue department has "No Objection"to the approval of this submittal.
G) E-911 department has "no Objection"to the approval of this submittal.
H) ACSA has forward comments directly to the consultant.
Departmental and agency comments from and VDOT 11 be forwarded as received.
These comments have been addressed per the comment responses above. Attached are 2 copies
(add 1 more copy if VDOT needs to review, and 1 more if mass-grading that Planning needs to
review) of the revised plans, calculations, and narratives to Current Development Engineering
along with the required review fee and transmittal form.
Please let us know if there are any additional comments or concerns, as we are anxious to begin
the next phase of construction at Old Trail Village.
Best regards,
44—tefr. C44:
Christopher C. Mulligan, P.E.