For Utilities Commission Meeting [October 20, 2020]
TO: Honorable Chairperson and Commission
APPROVAL: Thomas J. Crowley, P.E., Utilities Manager
Title
Recommend the City Council/Rialto Utility Authority Approve the Second Amendment to the Four-Party Implementation Agreement for the Backup Water Supply to the City of Colton.
(ACTION)
Body
BACKGROUND:
On August 12, 2015, the City of Rialto (Rialto) entered in to a Four-Party Implementation Agreement with Emhart Industries (Emhart), County of San Bernardino (County) and the City of Colton (Colton), to implement the interim remedial action plan as required by the Consent Decree as entered on July 2, 2013. The remedial action required by the Work Consent Decree was selected and approved and overseen by the US Environmental Protection Agency (EPA).
In September 2010, EPA issued the Interim Action Record of Decision to the Source Area Operable Unit (SAOU) of the B.F. Goodrich Superfund Site, now referred to as the "Rockets, Fireworks, and Flares Superfund Site." The EPA's Remedy required Emhart Industries to install, operate, and maintain a groundwater pump and treatment system to intercept and control the spread of contaminated groundwater from the 160-acre parcel. The EPA Remedy is designed to capture and remove perchlorate and Trichloroethylene (TCE) in the groundwater in the Rialto-Colton Groundwater Basin (Basin) emanating from a 160-acre parcel located in north Rialto.
The County and Emhart agreed that the EPA Remedy would be combined with an existing groundwater extraction and treatment remedy designed and constructed by the County to capture and remove perchlorate and TCE in the Basin due to the landfill and required by the Santa Ana Regional Water Quality Control Board (Regional Board). This combined project is referred to as the "Combined Remedy" project.
The Combined Remedy includes:
1. Installing a new extraction well (EW-1), located at the northwest corner of Jerry Eves Park and piping to...
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