HomeMy WebLinkAboutStormwater Maintenance Plan 06-28-2021INSPECTION AND MAINTENANCE FOR
STORMWATER MANAGEMENT FACILITIES
The Property Owners Association shall be responsible for the maintenance of the stormwater
drainage facilities within the Fallon Condominiums development.
Storm Water Facilities:
1.Drainage swales slope toward retention and detention ponds to collect storm water
runoff and channel it to the retention or detention pond.
2.Drywells are underground storm water collection facilities that collect and temporarily
store runoff from roof tops and landscaped areas before allowing storm water to infiltrate
into the ground.
Post Construction Inspection:
1.Observe that drywell structures are clear of any material or obstructions in the drainage
slots. Inspect these structures to insure proper drainage following a storm event.
Immediately identify and remove objects responsible for clogging if not draining
properly.
Semi-Annual Inspection:
1.Check retention dry wells three days following a storm event exceeding ¼ inch of
precipitation. Failure for water to percolate within this time period indicates clogging or
poor-draining soils. Clear any clogs and replace any poor-draining soils with well-
draining gravely soils.
2.Check for grass clippings, litter, and debris in drainage swales and dry wells. Flush
and/or vacuum drywells or storm water pipes if excessive material is observed in the
facilities.
Standard Maintenance:
1.Inspect and remove debris from drainage swales and dry wells. Use a vacuum truck to
clean catch basins and dry wells.
2.Inspect for the following issues: differential accumulation of sediment, drain time, signs of
petroleum hydrocarbon contamination (odors, oil sheen in pond water), standing water,
trash and debris.
Equipment Type/Access:
All drywells will be cleaned using vacuum trucks. All vacuum trucks will access the site through
the proposed alley and parking lot.
Cost Estimate:
Depending on the amount of rainfall in the given year, the cost to maintain the stormwater
infrastructure will vary. It is estimated that the drywells will need to be vacuumed out once per
year, with an estimated cost of $1,500 to do so.The drainage swales will be maintained by the
season landscaping and mowing operations.The applicant will be responsible for financing the
maintenance of the stormwater infrastructure.