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Bidjugde
JOB
Airport Safety Drainage Improvements
BID DATE
07/28/15 - 3:00 REAL-TIME
AGENCY
Chandler
ESTIMATE
$646,360
SCOPE
REAL TIME CHANGE. DUE 7/27, OPEN 7/28. Work under this contract includes the construction of a new 36-inch diameter culvert beneath Queen Creek Road which will connect the Airport West Retention Basin to the Lantana Ranch Park Retention Basin for the purpose of draining the Airport West Basin within 36 hours after large rain events. This is intended to reduce the risk to aircraft from bird strikes. Also included are the re-grading of the 4 acre Airport West Basin to provide positive drainage, a slide gate on the 207 LF 36-inch culvert, between 18 to 389 LF of 12-inch PVC pipe, a 626 LF concrete low flow channel, minor miscellaneous concrete structures, and the installation of between 3 and 16 dry wells in both the Airport West and Lantana Ranch Park Basins. The number of dry wells needed, will depend on the tested infiltration performance of the first dry wells. Force account items are included to account for the range of required dry wells.

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