The SW Plaza Parkway and SW College Ave Detention Basins Project includes
the construction of two stormwater detention basins and general grading. The basins are located in the southwest area of Prairie Trail in Ankeny, on the west side of SW College Avenue and south side of SW Plaza Parkway.
The construction improvements for the stormwater detention basins include storm sewer installation and 102,500 CY of Class 10 earthwork excavation. Other associated improvements include pond clay liner, dewatering, revetment, trees, armor mat, temporary erosion and sediment controls, seeding and fertilizing and miscellaneous associated work. Phase 1 includes all items shown in contract documents, except for Native Seeding. Phase 2 is only the Native Seeding.
The bid opening for the project was held on Wednesday May 31, 2017. Four (4) bids were received as follows:
1. Seamus Excavating, LLC $855,070.38
2. McAninch Corporation $873,100.00
3. Quam Construction Company, Inc. $917,299.08
4. Vanderpool Construction, Inc. $1,101,869.00
The engineer's estimate for the project was $1,456,799.00. The bids ranged from approximately 41% below to 24% below the engineer's estimate. Public Works staff reviewed the bid results internally. Seamus Excavating, LLC has not previously completed public improvement projects for the City, but based on their references and relevant project experience they have the technical experience to undertake this project. It is recommended that the project be awarded to Seamus Excavating, LLC of Clive, Iowa.
Pending project approval and award by the City Council, the contractor will be required to fully complete the work within 45 working days with a late start date of July 17, 2017 for the Phase 1 work. The Phase 2 work shall be started between November 1, 2017 and November 15, 2017 and the contractor will be required to fully complete the work within 10 working days. The Notice to Proceed is expected to be issued in June 2017. |