TO: Honorable Mayor & Members of the North Port Commission
FROM: Peter D. Lear, CPA, CGMA, City Manager
TITLE: Work Assignment No. 4 with Layne Inliner, LLC. in the amount of $ 55,500 and Work Assignment No. 5 with Insituform Technologies, LLC. In the amount of $ 769,042.58 for the Inflow & Infiltration Project.
Recommended Action
Approve Work Assignment No. 4 with Layne Inliner, LLC. in the amount of $ 55,500 and Work Assignment No. 5 with Insituform Technologies, LLC. In the amount of $ 769,042.58 for the Inflow & Infiltration Project.
Background Information
Commission approved the zero-dollar, multiyear Contract Nos. 2018-41.001, 2018-41.002, and 2018-41.003 with Insituform Technologies, LLC., Layne Inliner LLC., and Hinterland Group, Inc. respectively on May 22, 2018 with the direction to bring each individual work assignment back to Commission for approval. The first work assignment, in the amount of $100,000 for heavy cleaning and CCTV with Layne Inliner LLC. was also approved at this meeting.
Inflow and infiltration (here in and after, I/I) are extraneous flows that enter the wastewater collection system and flow through to the plant. These flows reduce the capacity of the system and can lead to sanitary sewer overflows. Inflow occurs when storm water enters the sewer system through flooding of the manholes and direct connections of storm water to the wastewater collection system. Infiltration occurs when groundwater and storm water enter into wastewater collection system as a result of physical defects such as cracked pipes, leaking manholes or deteriorated joints. Most of the I/I experienced by the City is a result of infiltration and this I/I Rehabilitation Project is designed to mitigate that infiltration. The Inflow and Infiltration Rehabilitation project includes sewer line cleaning, closed circuit television inspection (CCTV), gravity sewer smoke testing, manhole rehabilitation, manhole lining systems, cured-in-place pipe lining and ...
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