HomeMy WebLinkAboutWPO201100032 Review Comments Stormwater Management Plan 2011-07-20� OF AL
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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:
Crozet Library ESC & SWM Plan [SDP201100038, WP0201100032]
Plan preparer:
John D. Reno [john.reno @PHRA.com]
Owner or rep.:
County of Albemarle c/o Finance Administration RM 149
Plan received date:
3 June 2011
Rev. 1:
7 July 2011
Date of comments:
10 June 2011
Rev. 1:
20 July 2011
Reviewer:
John P. Diez — Engineering Technician
Engineering has reviewed the final site plan associated with the Crozet Library received 7 July 2011.
A. Final Site Plan (SDP201100038)
1. Please update the existing contours on Main Street on the existing conditions sheet. Please revise
all necessary sheets to show the new existing contours.
(Rev. 1) Comment has been addressed.
2. Please provide date and source of the topographic information. All topography should be at least
visually field verified by the designer within the last year.
(Rev. 1) Comment has been addressed.
3. A Letter of Intent is needed from the owner of TMP:56A2- 01 -15, TMP:56A2- 01 -14, and
TMP:56A2- 01 -12. Grading easements must be recorded prior to final site plan approval.
(Rev. 1) Comment has been addressed.
4. VDOT approval must be obtained for any plan affecting public right -of -way.
(Rev. 1) Comment has been noted.
5. Please show the existing contour fines of Main Street as dashed lines throughout the set of plans.
(Rev. 1) Comment has been addressed.
6. Please provide Albemarle County General Construction Notes. Please refer to the Design
Standards Manual.
(Rev. 1) Comment has been addressed.
B. Erosion and Sediment Control (WP0201100032)
1. Please provide County Erosion and Sediment Control Notes. Please refer to the Design Standards
Manual.
(Rev. 1) Comment has been addressed.
2. Please update the project description and existing site conditions on the E &S narrative. Please
remove anything relating to the construction of a building or library.
(Rev. 1) Comment has been addressed.
3. Please update the construction sequence and include the demolition.
(Rev. 1) Comment has been addressed.
Engineering Review Comments
Page 2 of 2
4. Engineering recommends:
a. In the initial phase, remove the silt fence on the north and south side of the site and
replace them with diversion dikes directing the runoff to a sediment trap at the lowest
point of the site on the west side of the property. This will allow the entire site's runoff,
including the construction entrance, to be captured by the sediment trap. The silt fence on
the west side of the property can remain.
(Rev. 1) Comment has been addressed.
b. In phase 1, move the sediment trap to the area of the proposed Bio- retention pond.
Reshape the sediment trap so it can be converted to the bio- retention pond once the site
has been stabilized. (Engineering allows over sizing the sediment trap with a weir to allow
runoff to sheet flow from the sediment trap down to the west.)
(Rev. 1) Comment has been addressed.
5. Please include all proposed grading within the limits of disturbance for all phases.
(Rev. 1) Comment has been addressed.
6. Please provide dust control (DC) in all E &S phases.
(Rev. 1) Comment has been addressed.
7. Tree protection must be provided to all trees that are being saved.
(Rev. 1) Comment has been addressed.
8. Please show the proposed contours for the sediment trap.
(Rev. 1) Comment has been addressed.
C. Stormwater Management Plan (WP0201100032)
9. A completed copy of the standard stormwater maintenance agreement and fee for recordation for
any stormwater management facility must be submitted prior to plan approval.
(Rev. 1) Comment has been noted.
10. Please provide Albemarle County General Stormwater Management Notes. Please refer to the
Design Standards Manual.
(Rev. 1) Comment has been addressed.
The Erosion & Sediment Control and Stormwater Management Plans (WP0201100032)
submitted 7 July 2011 have received Engineering Review and meet Albemarle County minimum
checklist items for approval. Please submit 5 paper copies to engineering for record keeping.
A completed copy of the Standard Stormwater Maintenance Agreement and fee for recordation for
the stormwater facilities is required prior to final approvaQ I 7-304E] The forms and instructions
can be found on the Community Development Department Web site on www.albemarle.org.
You may contact Ana Kilmer (Albemarle County Department of Community Development) at ext.
3246 for further information on bonding procedures and Maintenance Agreements.
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