HomeMy WebLinkAbout2022-01-04 Long Term Stormwater O&M Plan 1
Sullivan Engineering Group, LLC
Civil Engloeers&Land Development Consultants
Long-Term Stormwater
Operation & Maintenance plan
33 Appledore Lane, forth Andover
Beginning with the construction of the drainage system,and continuing in perpetuity thereafter,the owner(s)
of the site shall maintain in accordance with the following schedule:
a. Pavement and walkways shall be swept in the early spring immediately after snow melt
b. Paving&cape cod berm shall be maintained in good condition to channel surface runoff into the
trench grate
c. Roof drain inlets, downspouts, and roof drain pipes - All components of the.roof drain collection
system shall be inspected at least 2 times per year. Sediments and debris shall be removed and
disposed of in accordance with all applicable federal, state, and local laws. Any components that
become damaged shall be repaired or replaced immediately upon discovery to assure proper
conveyance of stormwater runoff into the drrywell systems.
d. Concrete drywells—The level of water in the drywells shall be monitored during and after heavy rain
storms at least 2 times per year during the first year of operation and at least twice annually thereafter
for evidence of clogging or other problems. If water does not leave the chambers within 72 hours after
the storm,or if water breaks out on the surface above the system, or if the roof collection system
begins to overflow frequently(for the 10 year storm intensity or less intense storms),the infiltration
bed is likely clogged. The infiltration bed shall be cleaned and repaired or replaced as needed to
maintain proper functioning.
e. Vegetation shall be maintained in healthy condition to prevent erosion and sedimentation in the
drainage system and wetland resource areas.
£ Trench drain and concrete manhole—Each structure shall be inspected at least four(4)times a year to
insure proper function. The trench drain shall be cleaned of any sediment or leave collection
immediately. The concrete manhole sump shall be cleaned if sediment buildup exceeds 50%of the
sump capacity(2 feet of sediment)
12/28/2021
Owner: Date
Sean Delaney
P.O. Box 2004 Woburn, MA 01888 (781) 854-8644 e-mail:jacksul153@eomeast.net