HomeMy WebLinkAboutWPO201200060 Review Comments Erosion Control Plan 2012-07-12i"
,. `IRGINZP
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:
Moore's Creek WWTP Digester Improvements (WPO2012- 00060)
Plan preparer:
Hazen and Sawyer [fax 919 - 833 -18281
Owner or rep.:
Rivanna Water & Sewer Authority [fax 434 - 293 -8858]
Plan received date:
3 July 2012
Date of comments:
12 July 2012
Reviewer:
Michael Koslow
Review coordinator:
Ellie Ray
The first erosion and sediment control plan (WPO201200060) submitted 3 July 2012 has received
Engineering Review and does not appear to meet Albemarle County minimum checklist items for
approval. This review does not include Engineering comments for minor amendment to site
development plan submitted separately as SDP2012- 00040. Those comments will be provided by
the Review Coordinator. Please adequately address the following comments for final approval:
Erosion and Sediment Control Plan
1) Please update General Erosion and Sediment Control Notes on sheet 4 with "General construction
notes for Erosion and Sediment Control plans" as shown in County Design Standards Manual
located here (see p. 23 ):
< http: / /www.albemarle.org/upload /images /forms center /departments /community development/forms /
design_ standards _manual/Albemarle _County_Desi gn_ Standards _Manual_02- 12- 2010.pdf>
2) Please describe the land parcels adjacent to the waste water treatment plant ( "adjacent areas ") in
the erosion & sediment control narrative.
3) Please include a description of the existing soils and soils boundaries on site. Resubmittal of sheet
COI from WPO200800079 is sufficient so long as it is accompanied by a description of the
existing soils either on the plan sheet or in the narrative.
4) Please include the "dust control" and "temporary seeding" symbols with the proposed disturbed
area described on sheet C3.
5) Please adjust label for 100 year flood plain so it displays on sheet C3.
6) If existing chlorine storage building's demolition as shown on sheet C2 includes removal of the
building's foundation, please identify and include limits of disturbance with this project and
include erosion and sediment control measures in this area.
Engineering Review Comments
Page 2 of 2
7) Stabilized silt fence outlets are not DCR approved erosion & sediment control practices. Please
revise silt fence and remove the silt fence outlets shown on sheet C2. Silt fence should be placed
along a contour line (suggest revising to contour elev. 370). A series of Diversion Dikes and a
sediment trap between contour elev. 360 and 370 could also provide protection for this disturbed
area.
8) Please clarify the limits of disturbance proposed near the digesters. Sheet C1 implies yard piping
work north of digesters 1, 2, and 3 will disturb ground to north property line. If this is the case,
another sediment trap NW of digester 1 may be needed to protect this watershed outlet. Please
expand the limits of the partial site plan on sheet C2 and delineate the entire proposed limits of
disturbance for this amendment.
Current Development Engineering is available from 2:30 -4 PM on Thursdays to discuss these review
comments. Please contact Michael Koslow at 434 - 296 -5832 ext. 3297 or email mkoslow @albemarle.ora
to schedule an appointment.
[17- 204.f] An application for an erosion and sediment control plan that requires modifications, terms, or conditions to be
included in order for it to be approved shall be deemed to be withdrawn if the owner fails to submit a revised plan addressing the
omitted modifications, terms or conditions within six (6) months after the owner is informed of the omitted information as
provided under paragraph (B).