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Exhibit A Multi-Modal Station/Shopping Center Phase II ESA Page 2 TASK DESCRIPTIONS TASK A Subtask 1—GPR and Magnetometer Survey Two on-site properties, 730 E. Channel Street and 808 E. Miner Avenue,will be explored with a ground penetrating radar survey and a magnetometer survey to identify possible existing underground storage tanks. A PenMap specialist will be on-site to map, using GPS, the results of this investigation for future reference. Subtask 2—Cone Penetrometer Technology Borings Five cone penetrometer technology (CPT) borings will be installed around the site in the public right-of-way to an appropriate depth (approximately 120 feet). The CPT will be used to obtain lithologic information regarding the site,especially aquifers and aquitards. TASK B Subtask 1—Perimeter Borings Seven Geoprobe soil borings will be completed along the southern and western perimeter of the six-block area, the presumed up-gradient directions. The soil borings will be installed in the public right-of-way along North Stanislaus Street and East Weber Avenue. The borings will be completed to approximately 75 feet bgs to collect both groundwater and soil samples. Samples will be collected in an effort to discover contamination originating off-site. The boreholes will be left open during the day to collect depth-to-groundwater measurements once the groundwater has stabilized. The boreholes will then be tremied closed at the end of the day with bentonite containing neat cement. The neat cement at the surface will be treated with black dye to approximate asphalt color. The grouthole will be approximately two inches in diameter. Groundwater samples will be collected from both the top and the bottom of the aquifer. These will be tested for aqueous phase liquids(APLs) and dense non-aqueous phase liquids (DNAPLs), respectively. Additionally, all groundwater samples collected from the Geoprobes will be analyzed for volatile organic compounds (VOCs) by EPA Method 8260 at. Analyses will be performed at an off-site laboratory. Visible and laboratory-detected contamination in the first seven borings will necessitate the need for additional borings, estimated at 20% of the original number. Based on detected contamination, discrete soil samples from approximately 25%of the borings will be analyzed for VOCs by EPA Method 8260, semi-VOCs by EPA Method 8270, and LUFT-5 metals by EPA Method 6010B. Soil samples will be collected from each boring at depths of 4, 8, and 12 feet below ground surface (bgs). It is assumed that any detected contamination will require an estimated 10% of the discrete soil samples to be analyzed for total petroleum hydrocarbons by EPA Method 8015M. Subtask 2—Detection Borings Nineteen Geoprobe soil borings will be completed on and around the six-block area. The borings will be installed to approximately 75 feet bgs in the public right-of-way and on 930 E. Miner Avenue. Groundwater and soil samples will be collected to help assess the potential contamination originating on-site. The boreholes will be left open during the day to collect depth to groundwater measurements once the groundwater has stabilized.