Background/Discussion
The Eastern Hills Drive Segment D (PW19-16A) project and the Steven Road East (PW18-16B) project require the construction of four large box culverts in the existing channel of Little Pony Creek and in one tributary of Little Pony Creek. The construction of the box culverts creates stream impacts that are required to be mitigated per the USACE 404 Permit.
On-site mitigation opportunities for both projects is limited due to the amount of right-of-way available adjacent to the streams. Any on-site improvements would provide little overall benefit to the watershed and were not sufficient to satisfy the mitigation needs of the projects.
Off-site mitigation alternatives were reviewed and the selected alternative was the restoration and enhancement of the west bank of Mosquito Creek, north and south of Valley View Park. The mitigation provides additional flood storage, and both nutrient and sediment retention capacity. The project also restored native grasses and trees.
Funding is provided by the City of Council Bluffs and Pottawattamie County. The City’s 50% share will be paid using Sales Tax Funds.
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Division I General
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Total
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Original Contract Amount
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$99,084.00
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$99,084.00
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Change Orders (+4.77%)
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$4,727.50
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$4,727.50
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Final Contract Amount
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$103,811.50
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$103,811.50
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Less Previous Payments
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$98,620.92
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$98,620.92
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Retainage Due Contractor
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$5,190.58
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$5,190.58
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The Contractor completed the project on time and did not receive any non-compliance notices.