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Pre-field Activities • A pre-work site meeting was conducted on September 3,2014,during which Jonathan Shlee with Caltrans, Robert Kimball with Geocon, and Tommy Henson with Comcast reviewed the project site and scope. The corroded UST measuring roughly 5.5 feet long by 44 inches in diameter was exposed in Excavation 1 (see attached photographs). Based on the presence of solid contents (soil and dried drilling fluid), it was determined that the UST should be removed instead of closed in place. • Obtain a UST Closure permit from the SJCEHD. • Contact Underground Service Alert(USA)a minimum of 72 hours prior to the field activities. • Update the October 2013 Health and Safety Plan to provide guidelines on the use of personal protective equipment and the health and safety procedures implemented during the field activities. • Retain the services of Advanced Technology Laboratories (ATL), a Caltrans-approved and California-certified analytical laboratory located in Signal Hill, California, to perform chemical analysis of soil samples. • Retain the services of AVLS for the transportation and disposal of the tank solids contents and used adsorbent. • Caltrans will provide notification to the adjacent private property owner in advance of the field activities. UST Removal Activities The tank top will be exposed and cut off to expose the Comcast fiber optic conduit and to facilitate the removal of the solid materials within the tank. The lower explosive limit (LEL) will be monitored but based on prior readings is expected to remain at 0.0%. The tank solid contents will be removed using a backhoe and hand tool methods and placed in labelled 55-gallon drums. The tank will be dry scraped and cleaned using adsorbent (Solidasorb) materials. The tank will be removed and subsequently cut into pieces using a non-sparking pneumatic cutting tool. The tank contents and adsorbent will be disposed of by AVLS as non-hazardous petroleum-contaminated solids to the Kiefer landfill facility in Sacramento, California. The cut tank and product piping will be recycled at the Sims Metal Management in Sacramento,California.A"Certificate of Destruction"will be provided by Sims. To protect the Comcast fiber optic conduit,the tank excavation will be backfilled with two-sack concrete sand slurry. The remainder of the excavation will be backfilled with aggregate base material and completed with asphalt concrete. Soil Sampling and Analysis Soil samples will be obtained approximately 2 feet beneath the bottom of the UST excavation using the backhoe bucket and from beneath the former dispenser pad using a hand-auger. The soil samples will be collected in new stainless steel tubes, sealed at both ends with teflon, capped, labeled, and placed in a chilled cooler pending transport under chain-of-custody protocols to the laboratory. Linden UST Removal Workplan,TO No.3 4 Caltrans Contract 06A1895,EA No. ]0-OY3600 Geocon Project No.59800-0I-34 -2- September 22,2014