HomeMy WebLinkAbout2018-06-19 Monitoring Reports SPR 1
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October 12, 2018
WILLIAMS
Monica Gregoire SPARAGES
Planning Board EHGIHEEAS i ilhxEW i SUAVEYM
120 Main Street
North Andover, MA 01845
S
RE: Merrimack College—315 Turnpike Street
Environmental Monitoring Report
Dear Monica,
On October 3, 12, and September 19 and 27,2018 we conducted an erosion control
inspection at the above referenced property in accordance with the requirements set forth
by the Town of North Andover Planning Board decision.
There have been no issues with erosion or the erosion controls, and there are no signs of
sediment traveling beyond the limit of work. The previous issue with sediment traveling
just beyond the silt socks along Turnpike Street has been resolved.
The Turnpike Street side of the parking lot and area in front of the administration has
been paved with associated stormwater structures replaced.
The catch basin silt socks are still being regularly cleaned out. The contractor is now
working on replacing the remaining stormwater structures on the interior half of the
parking lot, which will then be paved.
We will continue to monitor the construction site weekly and after storm events totaling
more than '/z"in 24 hours. If you should have any questions regarding this information
please do not hesitate to contact our office.
Sincerely,
WILLIAMS & SPARAGES, LLC
Thorsen Akerley,RS
Erosion Control Monitor
189 North Main Street, Suite 101 • Middleton, MA 01949 • Tel: (978) 539-8088 • www.wsengineers.com
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September 17, 2018
�,� T WILLIAMS
Monica Gregoire V V —"4 & SPARAGES
Planning Board ehcErsens einFr�ns wRv�roxs
120 Main Street
North Andover, MA 01845 '
S
RE: Merrimack College—315 Turnpike Street
Environmental Monitoring Report
Dear Monica,
On August 20, 23, 30, and September 14,2018 we conducted an erosion control
inspection at the above referenced property in accordance with the requirements set forth
by the Town of North Andover Planning Board decision.
There have been no issues with the erosion and there are no signs of sediment traveling
beyond the limit of work.
The Turnpike Street side of the parking lot has been paved to this point, and the
contractor is now working on replacing the old stormwater structures on the other side of
the parking lot before finishing the paving.
The catch basin silt socks also appear to be being regularly cleaned out. The catch basins
are now raised above existing grade, so it is unlikely sediment could reach the stormwater
system.
We will continue to monitor the construction site weekly and after storm events totaling
more than %z"in 24 hours. If you should have any questions regarding this information
please do not hesitate to contact our office.
Sincerely,
WILLIAMS & SPARAGES, LLC
Thorsen Akerley, RS
Erosion Control Monitor
189 North Main Street, Suite 101 . Middleton, MA 01949 • Tel: (978) 539-8088 • www.wsengineers.com
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August 16,2018
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& WILLIAMS
Monica Gregoire SPARA.GES
Planning Board ENGINEERS PLANNEAS E tUA4FY0AS
120 Main Street
North Andover,MA 01845
S
RE: Merrimack College--315 Turnpike Street
Environmental Monitoring Repoli
Dear Monica,
On August 2, 8, and 13, 2018 we conducted an erosion control inspection at the above
referenced property in accordance with the requirements set forth by the Town of
Andover,
The site held up well following the substantial rain this past weekend. There was some
minor ponding scattered across the site,however it was still relatively dry overall.
There have been no issues with the erosion controls as all of them are staked in place,and
there are no signs of sediment traveling beyond the limit of work. The active work area is
about 2 feet lower along the edge of the erosion controls further limiting the chance of
any sediment traveling outside the limit of work.
The catch basin silt socks also appear to be being regularly cleaned out.
We will continue to monitor the construction site weekly and after storm events totaling
more than %a"in 24 hours. If you should have any questions regarding this information
please do not hesitate to contact our office.
Sincerely,
WILLIAMS & SPARAGES, LLC
Thorsen A erle , RS
Erosion Control Monitor
189 North Main Street, Suite 101 9 Middleton, MA 01949 • Tel: (978) 539--8088 • wwwmsengineers,corn
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