SUBJECT/RECOMMENDATION:
Title
Approve Engineer of Record (EOR) Supplemental Work Order One to McKim and Creed, Inc. in the amount of $96,600 for Inflow and Infiltration Flow Monitoring (18-0023-UT) and authorize the appropriate officials to execute same. (consent)
Body
SUMMARY:
On May 3, 2018 and June 7, 2018, City Council approved Initial Work Orders for twelve months for continuous inflow and infiltration flow monitoring at Marshall Street and East Water Reclamation Facility (WRF) in the amount of $190,000 and at Northeast (NE) WRF in the amount of $123,400, respectively.
During wet weather events, the City’s sanitary sewer system experiences higher influent volumes due to inflow and infiltration (I&I) entering the system. These higher volumes can cause sanitary sewer overflows and potential (WRF) permit violations because the systems are not designed to accommodate the significant volumes of I&I. Monitoring equipment is installed to collect continuous flow data during dry weather and wet weather events in order to identify the sources of I&I. This information has led to the remediation of many sanitary sewer defects and a measurable reduction in rainfall derived I&I.
Supplemental Work Order One will provide for up to a six-month continuation of flow monitoring services for the City’s three wastewater basins (Marshall St., East and NE WRF).
Project benefits are improved process efficiencies, an ongoing rehabilitation and restoration strategy of conveyance infrastructure, increased environmental protection and regulatory compliance.
The City of Clearwater’s Public Utilities Department is responsible for owning, operating and maintaining the wastewater collection system and water reclamation facilities. The Department plans to monitor sanitary flow for the indefinite future and has recently used an RFQ to select a new Consultant to continue the monitoring after McKim & Creed’s term expires. Currently the new consultant’s (Wright-Pierce) scope of work/work order is under development.
USE OF RESERVE FUNDS:
4211354-530100 $43,200
4211355-530100 $37,200
4211356-530100 $16,200
Funds for supplemental one work order are included in the 2018/19 City Manager’s Public Utilities Operating Budget of Professional Services as follows: $21,600 in 4211354, WET Marshall Street, $18,600 in 4211355, WET NE Plant, and $8,100 in 4211356, WET East Plant. Future year funding will be included in the 2019/20 Public Utilities Operating Budget of Professional Services as follows: $21,600 in 4211354, WET Marshall Street, $18,600 in 4211355, WET NE Plant, and $8,100 in 4211356, WET East Plant.