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Stantec December 19, 2008 Page 2 of 6 Reference: Work Plan for Phase II Environmental Site Assessment,Tokay Tires(DEX#5130), 125 East Lodi Avenue, Lodi, CA The adjoining properties are as follows: • North - Residential; • South — East Lodi Avenue, beyond which lies The Round House Tavern; • East— East Stockton Boulevard, beyond which lies Smart& Final; and • West—Robinson Feed Supply Store. PROPOSED INVESTIGATION As stated previously, the purpose of the proposed investigation is to assess the vertical distribution of petroleum hydrocarbons and VOCs, including fuel oxygenates, in soil and groundwater in the vicinity of hydraulic lifts, OWS, and former UST, as part of a due diligence effort associated with the referenced Site. Preliminary Field Activities A Site-specific Health and Safety Plan (HASP) will be prepared for use by personnel implementing the Work Plan. The HASP will address the proposed field work, and a copy of the HASP will be available on-site at all times. Subcontractors performing field activities will be provided with a copy of the HASP prior to initiating work. Stantec will conduct a subsurface utility clearance prior to initiating field activities. The utility clearance will include notifying Underground Service Alert (USA) of the proposed work a minimum of 48 hours prior to initiating the field investigation, and securing the services of a private utility locating company to confirm the absence of underground utilities at each boring location. SUBSURFACE ASSESSMENT Soil and groundwater conditions will be evaluated by advancing approximately seven (7) direct-push soil borings in the vicinity of hydraulic lifts, OWS, and former UST, collecting and logging lithologic data, and collecting, screening, and analyzing soil and groundwater samples (if encountered) from each of the borings. Soil Assessment GeoProbeo soil borings will be advanced by Vironex, a California State Licensed Driller, to obtain lithologic data, and to evaluate potential subsurface contamination. Approximately seven (7) soil borings (5 adjacent to the hydraulic lifts to 12 feet below ground surface [bgs]; 1 adjacent to the OWS to 12 feet bgs; 1 adjacent to a former waste oil UST to 20 feet bgs). Attachment B shows the proposed boring locations. Soil samples will be collected using a hydraulically and pneumatically driven sampler equipped with a 2-1/8 inch outside diameter core barrel. Two nested sampling rods will be driven simultaneously; small diameter inner sampling rods are used to obtain and retrieve the soil cores, and larger diameter outer rods serve as temporary drive casing. The use of drive casing prevents sloughing of the formation while the inner rods are withdrawn from the borehole. This ensures that the drive sampler will always be sampling soil from the desired depth interval, rather than soil that has sloughed in from higher up in the borehole.