HomeMy WebLinkAbout034 O & M manualCherry Creek Mixed Use
350 Gallatin Park Drive
Storm Water Facilities Operation & Maintenance Manual
Overview
The Cherry Creek Owners Association is responsible for maintaining the existing regional storm pond. The onsite
Owners Association is responsible for maintenance of all of the onsite Storm Water Facilities, sidewalk chases, curb
cuts, storm structures, storm swales, and storm separator per the schedule below.
Maintenance
The storm sidewalk chases, curb cuts and curb lines are to have the sediment removed by hand on a yearly basis or an
updated maintenance schedule as determined by monitoring the sediment build‐up of the inlets, quarterly. Any
removed sediment shall be removed from the site and disposed of properly as to not discharge into state waters.
The Hydrodynamic Separator is to be visually inspected every 6 months to check for build‐up of sediment in the bottom
of the unit. If the sediment depth exceeds 75% of the sump depth or 18 inches deep, the sediment is to be removed
using a vac‐truck to suck out the sediment and dispose of it at a disposal site. The sediment depth can also be measured
from the top of the unit. If the sediment is measured to be 5.7’ or less below the top of the separator unit, then the
sediment needs to be removed.
Floatables (trash) are to be netted out and disposed of prior to removing sediment with the vac‐truck. Any oils or
hydrocarbons are to be removed using absorbent pads prior to vac‐trucking out the sediment. Reference the Contech
CDS Inspection and Maintenance Guide for additional details.
The storm water pond and grass swales shall be monitored every five years for sediment build‐up. When the sediment
build‐up starts to decrease the capacity of the pond, the sediment shall be removed mechanically and hauled from the
site. If the extraction of the sediment removes the vegetation from the bottom of the pond, it should be reseeded or
re‐sodded and appropriate storm water BMPs are to be installed until the vegetation is stabilized.
The owners of the first constructed building will be responsible for maintenance of all of the above items until an
Owners Association is in place or until a second building is constructed. If two buildings are occupied, an Owners
Association must be created which will take over all maintenance.
Budget
It is estimated that the yearly budget estimated to complete the above items is approximately $1,000 in 2021 value.
This amount includes some contingency to build up a fund to allow larger scale maintenance.