HomeMy WebLinkAboutWPO201300011 Correspondence 2013-02-07 BOHLER ENGINEERING
Professional Engineering Service 28 Blackwell Park Lane, Suite 201, Warrenton,VA 20186
Telephone: (540)349-4500/Fax: (540)349-0321
MEMORANDUM
Via Hand Delivery
Date: November 11, 2013
To: Whom It May Concern
From: Daniel R. Hines, P.E.
cc:
Re: 5th Street Station—Minor Grading Plan Amendment
Attached is a copy of the E&SC Plan from the approved Minor Grading Plan for preparing access to the
DEQ approved Avon Landfill slope restoration project along Moore's Creek. All of the gabion work and
about one-half of the Living Wall work can be performed within the limits of disturbance shown on the
Plan. However, we need a minor field change that allows us to move approximately 120 feet to the east
along the existing trail (shown in yellow) to set up the Yard Works blower truck at a second location in
order to install the eastern-half of the Living Wall.No
undercutting is necessary, but fill consisting of rock and perhaps some soil will be needed to provide
stable access for the blower truck.
There is an existing berm that occurs along the top of the slope that will contain sediment, if any should
be generated. Since a berm exists along the edge of the work area, silt fence should not be necessary.
Jonney Otto, engineering inspector for Albemarle County, has viewed the area with Brian Bishop
(construction superintendent with Brent Scarbrough and Company).
We are also required to pick up visible waste materials on the landfill slope. We plan to use track
equipment for this and access will be along the existing path,which is shown in yellow. County Engineer
Glenn Brooks informed Jonney Otto that waste removal and covering (as necessary) is under the
jurisdiction of DEQ. Therefore, Albemarle County has no requirements for activities associated with
waste removal. As shown on the plan,we plan to set up a track hoe 130' east of the second blower truck
location. The track hoe will assist with removing waste materials encountered in the gabion wall footing
excavation.
It is therefore requested that the limits of disturbance shown on the approved Minor Grading Plan be
amended to allow set up of the blower truck at the second location. Based on Glenn Brooks'
conversation with Jonney Otto, we do not believe the track hoe activity for waste removal described
above, is applicable to the Minor Grading Plan. If the County believes it does, we request that the plan be
amended to increase the disturbed area for this activity.
If you have any questions or require additional information,please do not hesitate to contact this office at
(540)349-4500.
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H:\12\V 122001\Administrative\Memos\1311 11 Minor Grading Plan Amendment Narrative.doc
Page 1 of 1
Jonney Otto
From: Steve Werner[swerner @daa.com]
Sent: Wednesday, October 30, 2013 12:23 PM
To: Jonney Otto
Cc: DHines @bohlereng.com; brian @brent.us; Neal Gosdin; rurbine @yardworksonline.com;
dan @sjcollinsent.com; Charles Lee (charles @sjcollinsent.com)
Subject: Clarification of E&SC Requirements-Avon Landfill Corrective Measures
Attachments: Avon LF Corrective Measures Work Area.pdf
Jonney:
Attached is a copy of the E&SC Plan from the approved Minor Grading Plan for preparing access to
the DEQ approved Avon Landfill slope restoration project along Moore's Creek. All of the gabion work
and about one-half of the Living Wall work can be performed within the limits of disturbance shown on
the Plan. However, we need a minor field change that allows us to move approximately 120 feet to the
east along the existing trail (shown in yellow)to set up the Yard Works blower truck in order to install
the eastern-half of the Living Wall. No undercutting is necessary, but fill consisting of rock and perhaps
some soil will be needed to provide stable access for the blower truck.
There is an existing berm that occurs along the top of the slope that will contain sediment, if any should
be generated. I assume we need approval from Albemarle County to create access to the eastern blower
truck work area. Since a berm exists along the edge of the work area, is silt fence necessary? If so, rather
than installing silt fence, which requires bringing a contractor from Richmond, we'd like to install
approximately 120 feet of siltsoxx (can be done by Yard Works) along the upslope edge of the existing berm.
The County approved siltsoxx for erosion control for the two fill areas on top of the landfill.
We are also required to pick up visible waste materials on the landfill slope. We plan to use track
equipment for this and access will be along the existing path, which is shown in yellow. Since no grading
is necessary for access, am I correct in assuming E&SC measures are not necessary?
I would like to meet with you, as soon as your schedule allows, to determine what is required. We would
like to prepare the 120 feet of additional access no later than November 11, 2013, if at all possible.
I look forward to your response and will follow up this email message with a phone call.
Steve
Stephen G. Werner, P.G.
Environmental Program Manager
Draper Aden Associates
Engineering •Surveying • Environmental Services
Lasting Positive Impact
direct 804-261-2937/804-264-8773/mobile 804-869-2246
www.daa.com
All the Stormwater News That's Fit to Print-The Inlet
1
B O H E R Blackwell Park Lane, Suite 201
Warrenton, VA 20186
PHONE 540.349.4500
E N G I N E E R I N G FAX 540.349.0321
April 2, 2013
Via Federal Express
County of Albemarle
Department of Community Development
401 McIntire Road, North Wing
Charlottesville, VA 22902-4596
Attn: Max Greene
Re: Minor Grading Plan -2nd Submission
WP0201300011
5th Street Station
5th Street SW&Avon Street Ext.
Charlottesville, VA 22902
Albemarle County
BE# V122001
Dear Mr. Greene:
Bohler Engineering is pleased to submit on behalf of S.J. Collins, the Minor Grading Plan to construct a
temporary access road on the Avon Landfill Parcel for the 5th Street Station application in Albemarle
County, VA. The following is our comment response letter addressing comments received from Max
Greene dated March 15, 2013. Each comment is addressed and responded to as follows:
Comment 1: This plan appears to be an amendment to the WPO201100100 New Era Properties, LLC
Site - Avon Street Extended water protection plan for a waste area. Please show the
previously approved grading and make this an actual amendment to the previously
approved plans.
Response 1: The previously approved grading and E&S controls have been added to this WPO plan.
Comment 2: Perimeter erosion control measures do not appear to meet the minimum requirements of
the State and County. Please show sediment control structures designed for the
coinciding drainage areas. Sediment traps and basins may be required for approval.
Response 2: The perimeter erosion control measures have been revised per a meeting between Charlie
Yowell with Bohler Engineering and the Albemarle County Engineering Department on
3/21/13.
Comment 3: Diversions appear to direct concentrated storm flows over critical slopes and will require
temporary slope drains and energy dissipaters.
Response 3: Diversions have been revised to not direct concentrated storm flows over critical slopes.
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BOH LER
Max Greene
E N G I N E E R I N G 5`h Street Station
Minor Grading Plan—2"d Submission
4/2/13
Page 2 of 3
Comment 4: Silt fence is shown above the proposed site. Please explain.
Response 4: The super silt fence has been revised to be downstream of all disturbances in order to
capture and filter sediment laden runoff.
Comment 5: Diversions need to be designed for the corresponding drainage areas and accurately
depicted on the plan sheet.
Response 5: Diversions have been designed and added for each corresponding drainage area and
shown correctly on sheet 3.
Comment 6: Rock check dams do not work as shown.
Response 6: Rock check dams and associated references have been removed from the plan.
Comment 7: Please show Std. & Spec. 3.03 (CRS)on the plan sheet.
Response 7: Std. & Spec. 3.03 has been added to sheet 6.
Comment 8: Limits of disturbance will encompass all erosion control measures and any other work to
be performed by this application.
Response 8: The future limits of disturbance have been removed from this plan set and the limits of
disturbance proposed with this application have been revised to now encompass all
erosion control measures and work proposed to be performed.
Comment 9: Please show the headwater storage area for pipe inlets on the plan for construction and
inspection. Road should be a minimum 18"above the headwater depth.
Response 9: The E&S plan has been revised to include the grading and E&S controls from
WPO201100100. A sediment trap with this plan has been relocated and revised to have a
pipe outfall. This piped outfall incorporates 18" of freeboard above the dry storage
volume. The second culvert proposed with the original design has been removed with
this submission and runoff that was flowing to that culvert now is being diverted to a
swale further to the west which minimizes disturbance to the critical slopes in the area.
Comment 10: Temporary access roads will require turn-around areas adequately sized for the
anticipated vehicles that will be utilizing this access.
Response 10: The previously proposed turn-around has been labeled. The first turnoff has been
designed for rock trucks to access and release the stone down to Moore's Creek. The rest
of the access road lower down the hill has been designed for smaller construction traffic
that will actually perform the mitigation work on Moores Creek including potentially
track or rubber tire loaders. The limits have been expanded as shown in the E&S plan to
provide staging areas.
Comment 11: Page 2 of 6 appears to be a boilerplate from another project. Please explain purpose of
this page.
Response 11: This sheet contains general notes, standards, and legends that are standard to all plans that
Bohler Engineering prepares and are necessary for liability purposes.
CIVIL AND CONSULTING ENGINEERS • SURVEYORS • PROJECT MANAGERS • ENVIRONMENTAL CONSULTANTS • LANDSCAPE ARCHITECTS
B O H L E R Max Greene
E N G I N E E R I N G 5th Street Station
Minor Grading Plan—2nd Submission
4/2/13
Page 3 of 3
Comment 12: Please update the E&SC narrative to match the plans.
Response 12: The E&SC narrative has been revised as necessary to match the plans.
Should you have any questions regarding this project or require additional information, please do not
hesitate to contact me at(540) 349-4500.
Sincerely,
Bohler En ineering
(Pe
Dan I R. Hines, P.E.
cc: Dan Tucker, S.J. Collins
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