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CM2016-086 <br /> a/aitago. <br /> c'tv ° MEMORANDUM <br /> Chino Hills <br /> DATE: November 17, 2016 <br /> TO: Honorable Mayor and City Council <br /> FROM: Konradt Bartlam, City Manag-rW <br /> RE: LEWIS APARTMENT COMMU ITIES SANTA BARBARA PROJECT SITE— <br /> SMALL AREAS OF DIESEL AND GAS FUELS <br /> Grading crews at the Santa Barbara project site recently encountered soils with elevated <br /> levels of diesel and gasoline fuel remnants associated with the past Higgins Brick <br /> operations. As required by South Coast Air Quality Management District (SCAQMD), <br /> Lewis Apartment Communities (Lewis) cordoned off the area, which comprises <br /> approximately 900 yards, and reported the find to SCAQMD and the Regional Water <br /> Quality Board. <br /> SCAQMD assessed the area of the find and the remnant fuel particles and issued a <br /> Mitigation Plan. As part of the Mitigation Plan, Lewis notified Chino Hills High School and <br /> property owners within 1,000 feet of the area. The notice informed the school and <br /> adjacent property owners of the diesel and gas fuel remnants, the expected duration of <br /> the cleanup, and the Lewis representative contact information should the students or <br /> neighbors have questions or concerns with dust or odors. <br /> Excavation, handling and removal of the impacted soils will begin Thursday November <br /> 17, 2016, and is anticipated to be completed by the end of the year. To date, all vapor <br /> readings from the fuel remnants are below the SCAQMD threshold of 90 parts per <br /> million, with the majority of the area below 50 parts per million. <br /> Lewis has already completed extensive clean-up of the site from the previous Higgins <br /> Brick operation, and will continue to monitor the site throughout the construction <br /> process. <br /> Please let me know if you need any additional information. <br /> KB:]L:ssr <br />