HomeMy WebLinkAboutAgenda Report - June 7, 2005 B-02 SMAGENDA ITEM e)'P2.
CITY OF LODI
COUNCIL COMMUNICATION
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AGENDA TITLE: Authorize Additional Task Orders with Treadwell & Rollo Regarding PCE/TCE
Contamination and Appropriate Funds ($280,000)
MEETING DATE: June 7, 2005 (Special Meeting)
PREPARED BY: Public Works Director
RECOMMENDED ACTION: That the City Council authorize additional task orders with
Treadwell & Rollo regarding PCEITCE contamination.
BACKGROUND INFORMATION: Staff and our consultants are further refining previous investigative
and remediation design work done on the Central Plume. One
aspect of this work involves downgradient containment of the plume.
In other words, how can we prevent further migration of the plume?
The proposed task order for "Aquifer Test and Conceptual Hydrogeologic Model" will assess the effects
of Well 6R (located at Blakely Park) on Central Plume migration and whether this well can be effectively
used in remediation. The estimated cost of the work is $104,000 and staff recommends an appropriation
of $110,000 to cover contingencies. A copy of the proposal is available at the Public Works Department.
In addition, the "contingency" tasks for the Central Plume and the remaining areas should be replenished.
These tasks are used for miscellaneous work in responding to technical issues raised by either the
Regional Board, City staff or other parties. Staff recommends that $80,000 and $40,000 be appropriated
for these respective areas.
Finally, staff recommends that a separate task for cost estimating for the Central Plume be established as
well. Central Plume expenses are now being kept within the Central Plume fund being established with
City funds and settlement proceeds. The Regional Board has asked for an updated draft remediation and
cost plan for the Central Plume. This task will essentially be done on a time -and -materials basis as
alternatives are considered. Staff recommends that the initial appropriation for this task be $50,000.
FUNDING AVAILABLE: Central Plume Fund $240,000; Water/Wastewater Funds $40,000 (50150)
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Mmes R. Krueger, Finance Director
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Richard C. Prima, .
Public Works Director
APPROVED: _rz;—:>- i
Blair Kind; y Manager
J:tPROJECTSIWATERIPCE,TCE1CTmdweARollo TaskOrders2.doe $12/2005