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MAYFLOWER PARK
WATER, SEWER, & DRAINAGE SUMMARY
A. Water System
Presently a 16" water main along the east side of Michigan Road. The existing
Headquarters Building and Advantage Building are served by a 8" private water
main within the Park. The Support Net buildings will be served by a private tap
from the 8" main along Mayflower Park Drive. It is anticipated that an 8" private
main will be constructed along the east side of the extension of 99'h Street as it
turns north toward the existing maintenance building. This would allow for a
looped system in that area. An additional 8" water main is anticipated to be
constructed along the proposed 99th Street from the intersection at Mayflower
Park Drive eastward approximately 600' as necessitated by a future user along
99th Street.
B. Sanitary Sewer
The existing sanitary sewer system for the site consists of a combination of 8"
and 10" vitrified Clay and PVC gravity mains along with both a lift station located
west of the Central Boiler Facility and a grinder pump located southeast of the
intersection of Mayflower Park Drive and the proposed 99'h Street. The lift
station pumps through a 4" force main to a gravity manhole immediately
southeast of the Central Boiler Facility. From this location, flow is through an 8"
vitrified clay pipe northerly to a 10" PVC main. The grinder pump also ejects flow
northerly through a 2" force main to the 10" PVC main. From this central
location, the 10" main flows northerly and easterly across U.S. 421 to a regional
lift station. The regional lift station forces flow westerly back along the north
properly line through a 14" force main to the Clay Regional Waste Treatment
Plant northwest of the site.
It is anticipated that as development occurs within the park, there will be a need
for construction of a new lift station to serve the entire park. However, portions of
the existing system including the 10" PVC main should remain as is at the site.
Therefore, the 10" sewer will be dedicated to Clay Regional Waste and a 15'
easement will be granted around the sewer. A preliminary master plan
identifying the future lift station will be prepared and submitted to Clay Regional
Waste for their review.
C. Drainage
The existing site is divided into generally three watersheds. The southernmost
watershed is comprised of a series of dry detention areas, culverts and storm
sewers that exit the site across 96'h Street on the west side of Mayflower Park
Drive through a 24" culvert. The proposed drainage characteristics for this
watershed include the addition of detention ponds along Mayflower Park Drive in
place of some of the existing dry detention areas. The 24" outlet pipe as well as
the culverts under Mayflower Park Drive will remain.
Mayflower Park Page 2 of 2
Water, Sewer, & Drainage Summary
The second watershed flows easterly through a series of storm drainage pipes to
a 36" culvert under U.S. 421. The runoff flows through an offsite drainage
easement eventually to Crooked Creek. The proposed 99th Street plans call for
additional storm sewers to connect to the 36" pipe. As development occurs
along the new 99th Street, individual parcels will provide their own stormwater
detention ponds in order to utiliiize the storm pipe in 99th Street.
The remaining watershed(s) flows into low areas located southwest of the
Advantage Building and north of the existing Maintenance Building. Portions of
these areas have been identified as wetlands. The wetlands may be filled and
mitigated in Boone County. Run off presently draining into the wetlands would
be re-directed to the east with adequate detention provided.