HomeMy WebLinkAboutStormwaterManagementPlanINSPECTION AND MAINTENANCE FOR
STORMWATER MANAGEMENT FACILITIES
The Property Owners Association shall be responsible for the maintenance of the stormwater
drainage facilities within the Bridger Skyline development.
Storm Water Facilities:
1.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 drywells,catch basins, and outlet 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 the detention pond three days following a storm event exceeding ¼inch 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, catch basins,culverts and
ponds.Flush and/or vacuum storm water pipes if excessive material is observed in the
facilities.
Standard Maintenance:
1.Inspect and remove debris from drywells.Use a vacuum truck to clean dry wells.
2.Monitor health of vegetation and revegetate as necessary to maintain full vegetative
cover.
3.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.
Sediment accumulation:
In most cases, sediment does not contain toxins at levels posing a hazardous concern. However,
sediments should be tested for toxicants in compliance with current disposal requirements and if
land uses in the drainage area include commercial or industrial zones, or if visual or olfactory
indications of pollution are noticed. Sediments containing high levels of pollutants should be
disposed of in accordance with applicable regulations and the potential sources of contamination
should be investigated and contamination practices terminated.
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 cleaned of debris
biyearly, with an estimated cost of $1,200 to do so. The Property Owners Association will be
responsible for financing the maintenance of the stormwater infrastructure.