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� 'rI LIGHT, AIR & SPACE CONSTRUCTION ENVIRONMENTAL SERVICES COMPANY State Contractors license Number 445493 State EPA R.E.A.Number 04072 Office 408-979-0661 The USTs, dispensers, product piping, and vent piping were loaded on a truck from ECI(a licensed hazardous waste hauler) for transport to the ECI T.S.D. facility at 255 Pair Avenue in Richmond, California. The USTs were shipped under Hazardous Waste Manifest # 24080916, using EPA # CAC 002 584 543, SAMPLING PROCEDURE On December 21, 2004, LA&S recovered(1) soil sample(03113-1) from approximately 9.5'below • the ground surface at the north end of the UST#1 excavation, and (1) soil sample(03113-2) from approximately 9.5' below the ground surface at the south end of the UST #1 excavation. LA&S recovered (1) soil sample (03113-5) from approximately 2' below the former gasoline dispenser location and (1) soil sample (03113-6) from approximately 1' beneath the surface of the stockpiled excavated soil from the UST#1 excavation. On December 21, 2004, LA&S recovered (1) soil sample(03113-3) from approximately 9.5'below the ground surface at the north end of the UST#2 excavation, and (1) soil sample(03113-4) from approximately 9.5' below the ground surface at the south end of the UST #2 excavation. LA&S recovered (1) soil sample (03113-7) from approximately 2' below the former diesel dispenser location and (1) soil sample (03113-8) from approximately 1' beneath the surface of the stockpiled excavated soil from the UST#2 excavation. Soil samples#03113-1, 03113-2, 03113-3 and#03113-4 were recovered using a mini-excavator. A clean brass 2" x 3" brass tube was driven into the soil in the excavator bucket with a mallet until there was no observable head-space in the tube. At this time the ends of the tube were sealed with teflon sheeting and plastic caps. The tube was then labeled and the information recorded on a Chairs-of-Custody, it was then placed on crushed ice in an ice chest for transport to Sequoia Analytical Lab under a legal Chain-of-Custody for analysis. Raymond J. Von Flue of the San Joaquin County Health Department was present to witness the sampling event. Janu 5, 2005 Page 6 of 14 MAIN OFFICE • 1707 LM-LE ORCHARD STREET,SurrE A•SAN JOSE•CA•95125 MAIUNG ADDRESS•P.O.BOX 36303•SAN]OSE•CA s 95158-6303.4081979-0661•4081979-062 t FAX•LASCONST(?_DAOL.COM E-MAIL GENEP,AL AND ENGINEERING CONTRACTOR•HAZARDOUS SUBSTANCE REMOVAL CONTRACTOR•$ITE ENVIRONMENTAL ASSESSMENTS WETLAND AND RIPARIAN HABITAT—ASSESSMENT—DESIGN—RESTORATION—CONSTRUCTION—MITIGATION MON1TORTNG