Admin Review Borings 4.8.24 Tighe&Bond
34-0007-018-05
April 5,2024
Yarmouth Conservation Commission
Attn: Brittany DiRienzo,Conservation Administrator
Yarmouth Town Hall
1146 Route 28
South Yarmouth,MA 02664
Re: Request for Administrative Approval
Geotechnical Exploratory Borings
Thacher Shore Road Culvert Replacement Project
Thacher Shore Road,Yarmouth, MA
Dear Administrator DiRienzo and Members of the Yarmouth Conservation Commission:
On behalf of the Town of Yarmouth(the Town),Tighe&Bond respectfully submits this request
for administrative approval of proposed geotechnical borings within a portion of Thacher Shore
Road in Yarmouth, Massachusetts.The proposed borings are for data collection and planning
purposes in preparation for the Thacher Shore Road Culvert Replacement Project to be
undertaken by the Town.
Exploratory borings are proposed at the location of the existing culvert that conveys Short
Wharf Creek beneath Thacher Shore Road.Two(2) borings are proposed within the existing
paved roadway footprint.This approval request is being submitted since the work is located
within areas subject to jurisdiction under the Massachusetts Wetlands Protection Act (MA
WPA,M.G.L.c. 131§40)as well as the Town of Yarmouth Wetland Protection Bylaw(Chapter
143)and their implementing regulations.These areas include Land Subject to Coastal Storm
Flowage(LSCSF),the 200-foot Riverfront Area,and the 100-foot Buffer Zone to Coastal Bank
and Salt Marsh. Tighe & Bond respectfully requests that the Yarmouth Conservation
Commission determine that the proposed exploratory boring work does not require the filing
of a Notice of Intent or Request for Determination of Applicability.
The exploratory borings will be performed using a truck-mounted drill rig with hollow-stem
augers or flush-joint casings and drilled to a depth of approximately 30 to 50 feet below
surface grades or until refusal is reached,whichever is shallower. If refusal is reached,a 10-
foot rock core will be taken.Split-spoon samples will be obtained using Standard Penetration
Test procedures.
Spoils generated from drilling will be used to backfill the boreholes.If there is an insufficient
amount of spoils to fill the hole, sand will be used. Any spoils unable to be returned to the
borehole will be spread near the boring location in a vegetated upland area and stabilized
with straw mulch. It is anticipated that each borehole will result in approximately two (2)
square feet(sf)of temporary impact.
Straw wattles will be installed around the work area prior to ground disturbance to protect
adjacent wetland resource areas. All of the proposed work will occur within the existing
roadway right-of-way(ROW),including vehicle drill rig access,with no anticipated impacts to
the surrounding wetland resource areas, and the roadway will be restored to pre-existing
conditions following completion of work.The locations of the proposed borings are shown on
the attached Preliminary Boring Location and Erosion Control Plan(Figure 1).
4 Barlows Landing Road,Unit#15 • Pocasset,MA 02559 • Tel 508.564.7285
www.tighebond.com
Tghe&BOnd
Thank you in advance for your review of the proposed work. Should you have any questions
or require additional information, please do not hesitate to contact me at (508) 304-6344 or
at KHouletighebond.com.
Sincerely,
TIGHE & BOND, INC.
Kristopher Houle, PE
Senior Project Manager
Copy: Nathan Whetten, PE, CG, Town of Yarmouth DPW
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Note: Legend FIGURE 1
Erosion control to consist of
straw wattles. Location of PRELIMINARY BORING LOCATION
Approximate proposed
straw wattles may change in
boring location AND EROSION CONTROL PLAN
the field based on drilling
conditions and topography. Thacher Shore Road over
Boreholes to be backfilled Short Wharf Creek
with cuttings and sand.
1:360 , Culvert Replacement
Tighe&Bond 1S 30 Yarmouth, Massachusetts
Based on Nearmap Imagery(2023). Feet (`
�V March 2024