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EXHIBIT "A" SCOPE OF WORK Task 1 - Review Site Plans and Previously Collected Data The FEIR summarized the known information on the site regarding the presence of toxic compounds. Since certification of the FEIR, additional studies have been reported by the project applicant's consultant. The FEIR and subsequent studies report that several pollutant substances with potential health implications are present in the leachate, soils, soil gases, and ambient air at the site and/or in the immediate vicinity of the site. At the time the FEIR was prepared, the project applicant had not provided sufficient information regarding the site plan or how the site preparation and/or construction activities might affect the integrity of the landfill cap. Therefore, it was decided that preparation of a health risk assessment at that time would necessarily involve too many speculative (and argumentative) assumptions, thereby limiting both the defensibility of the study and its value to decision makers reviewing the project. The principal information lacking included site design (that might indicate a pathway by which subsurface gases would enter a building or exterior area), and the content and concentration of the gases to which people could be exposed. Similar pathway and exposure information was also lacking for the leachate and soils. In this task, the consultant is to review the site plan, other project information provided by the applicant, and the studies conducted to date on the site. The need for additional information necessary to conduct the health risk assessment shall be determined. The product of this task will be a memorandum to the City, describing the consultant's assessment of the adequacy of the available information and itemizing the need for specific additional information. Task 2- Prepare Detailed Work Program The need for additional health risk assessment studies to be conducted within the CEQA process was specifically requested by the San Mateo County Health Department. The appealants of the FEIR Page 1 of 6