HomeMy WebLinkAboutSigned O&M Plan - - 75 COACHMANS LANE January 22, 2025
Revised: February 4, 2025
75 Coachman's Lane I North Andover, MA
Operations&Maintenance flan
Operations &Maintenance Plan:75 Coachman's Lane North Andover MA
System Owner:
Thomas & Amanda Lough
75 Coachman's Lane
North Andover MA 01845
In-Ground-Swimming Pool
® The proposed swimming pool shall be equipped with a non-backwash filtration system.
A Pentair System 30 Modular Media Filter is proposed (see attached filter description
and owner's manual).
® The property owner shall engage a water hauling company to pump the water and truck
the water offsite anytime the pool needs to be drained. Final disposal of the water by
the water hauling company shall be in accordance with all federal and state regulations.
® Pool water shall be dechlorinated by not adding chemicals and letting the pool water sit
for a minimum of 10 days. At that point, the pool water can be pumped into the
proposed infiltration trench system during normal dewatering following storm events.
® Pool chemicals shall be properly stored according to manufacturers' labels in an
enclosed shed or garage to ensure proper containment of any spills or drips.
Pool Filtration System &Filter Cleaning Procedure
The pool filtration system to be cleaned and maintained in accordance with manufacturer
specifications detailed in the attached owner's manual.
® Once operating pressure reaches 10 PSI above initial operating pressure,inspect and
clean filter element in according with the attached owner's manual. Falter element
should be cleaned with a hose and drained into the stone infiltration trench.
Weekly Pool Inspections &Checklist Log:
On a weekly basis, the following should be completed as part of ongoing maintenance of the
pool filtration system:
❑ Debris should be removed from the skimmer basket.
❑ The pump should be stopped,release all pressure, and remove trap cover and basket
to remove any additional debris.
❑ Air filter should be bled each time the system is started.
Williams&Sparages(Engineers -Scientists-Surveyors
189 North Main Street I Suite 101 1 Middleton,MA
(978)539-8088 1 www,wsen lneers.com Page 1
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January 22, 2025
Revised: February 4, 2025
75 Coachman's Lane I North Andover, MA
Operations&Maintenance Plan
❑ Check pump for leaks. If found, see pump owner's manual.
❑ Check the pump strainer lid for tightness.
Stone Infiltration Trench
This Operations &Maintenance Plan has been prepared to comply with the
provisions set forth in the Massachusetts Department of Environmental Protection
(DEP) Stormwater Management Standards.
Structural hest Management Practices (BMPs) require periodic maintenance to ensure
proper function and efficiency in pollutant removal from stormwaterr discharges that
would otherwise reach wetland resource areas untreated. Maintenance schedules
found below are recommended in Department of Envi-ronmental Protection's
Massachusetts Stormwater Handbook and as recommended in the manufacturer's
specifications.
The stormwater management system owner and the party responsible for
maintenance of the stormwater management system shall be the property owner and
their designated employees.
• Inspect and clean every six months and after every major storm event of 0.5 inches in a
24-hour period.
• Remove accumulated sediment, trash, debris,leaves and grass clippings.
• Remove tree seedlings before they become firmly established.
• Inspect the trench 24 hours or several days after a rain event to look for ponded water.
If there is ponded water at the surface of the trench, it is likely that the trench surface is
clogged.
• To address surface clogging,remove and replace the first layer of stone aggregate and
filter fabric. If the water is ponded inside the trench,it may indicate that the bottom of
the trench has failed.
• To rehabilitate a failed trench, all accumulated sediment must be stripped from the
bottom, the bottom of the trench must be scarified and tilled to induce infiltration,and
all of the stone aggregate and filter fabric or media must be removed and replaced.
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Williams&Sparages I Engineers•Scientists•Surveyors
189 North Main Street I Suite 1011 Middleton,MA
(978)589-8088 I www.wsen ineers,com Page 12
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