HomeMy WebLinkAboutFile Documents.630 W Hopkins Ave.0052-2020-BRES (23) MAINTENANCE PLAN
PREPARED FOR
630 WEST HOPKINS, ASPEN
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AA WOODY
CREEK
AdiedENGINEERING
P.O. Box 575
WOODY CREEK, COLORADO 81 656
970-309-7130
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1. Introduction
The drainage system found at 630 W Hopkins collects all impervious runoff from the lot with gravel/trench
drains and a driveway trench drain and directs the collected flows to pervious pavers and a drywell. Ap-
pendix A, attached, provides a survey of the drainage components. As the system is described below,
portions of the survey have been enlarged and presented as Figures to depict drainage components locations.
2. Component Maintenance
2.1.1 Pervious Paver System
The following maintenance recommendations for pervious paver systems can be found in Table 8.9 of the
URMP.
_ Table 8.9 Maintenance Recommendations for Cobblestone Block Pervious Pavement
Required Action Maintenance Objective Frequency of Action
and Action
Debris and litter Accumulated material should be Routine—As needed.
removal removed as a source control
measure.
Inspection Inspect representative areas of Routine and during a storm events to
surface filter fine gravel infill for ensure that stormwater is infiltrating and
accumulation of sediment and poor not bypassing the pavement surface on
infiltration. frequent basis.
Rehabilitating fine To remove fine sediment and trash Routine—Vacuum sweep the as indicated
grave infill surface accumulations from the top of the by inspection and if need be replace lost or
gravel and restore its infiltrating clogged gravel infill to bring its surface to
capacity. be 1/4 below the adjacent blocks.
Replace cobble block Restore the pavement surface. Non-routine—When it becomes evident
pavement Remove and replace the cobble that the modular blocks have deteriorated
pavement blocks, the leveling course significantly and the underlying gravels
under the blocks, the infill media, have accumulated much sediment and/or
gravel base and geotextile materials when the geotextile fabrics underneath it
when the pavement surface shows are clogged. Expect replacement every 10
significant deterioration or when the to 25 years dependent on use and traffic.
pavement no longer infiltrates
stormwater at rates that are
acceptable.
2.1.2 Drywell
The following maintenance recommendations for dry wells can be found on page 8-118 of the URMP.
Dry wells must be inspected and maintained yearly to remove sediment and debris that is washed into
them. The drywell can be access through a manhole lid found on the top of the drywell in the SW corner
of the property. A maintenance plan shall be submitted to the City in the Drainage Report describing the
maintenance schedule that will be undertaken by the owners of the new residence or building.
Minimum inspection and maintenance requirements include the following:
• Inspect dry wells as annually and after every storm exceeding 0.5 inches.
• Dispose of sediment, debris/trash, and any other waste material removed from a dry well at suita-
ble disposal sites and in compliance with local, state, and federal waste regulations.
• Routinely evaluate the drain-down time of the dry well to ensure the maximum time of 24 hours
is not being exceeded. If drain-down times are exceeding the maximum, drain the dry well via
pumping and clean out the percolation area(the percolation barrel may be jetted to remove sedi-
ment accumulated in perforations). Consider drilling additional perforations in the barrel. If slow
drainage persists,the system may need to be replaced.
2.1.3 Gravel Drains
Gravel drains surround much of the house perimeter. Gravel drains should be inspected annually to en-
sure that the gravel is free draining to the perforated pipe network below. Inspections can be completed
with a garden hose. If a drain does not accept inflows,the gravel should be removed, cleaned and the per-
forated pipe jetted with high pressure water.
2.1.4 Trench Drains
At least annually leaf debris and sediment shall be removed. Trench drains should be inspected annually
to ensure that they are free draining. Inspections can be completed with a garden hose. If a drain does
not accept inflows,the grate should be removed, cleaned and any blockages removed.
2
Date Gravel and Trench Drain Inspection Drywell Notes
Notes
3
Appendix A
As-Built Survey
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