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Scope of Services and Schedule <br />Category <br />Phase I ESAs identify concerns on a property related to hazardous or potentially hazardous <br />substances. Our Phase I ESAs are prepared in accordance with the ASTM Standard Practice for ESAs: <br />Phase I Site Assessment Process E 1527-13 and E 1527-211. The Phase I ESA will include review and <br />evaluation of past and current uses of the site for indications of the manufacture, generation, use, <br />storage, and/or disposal of hazardous substances, and evaluation of potential soil and/or groundwater <br />contamination resulting from current and historical land use activities, including those of nearby <br />properties. Specifically, Dudek will perform the following: <br />• Conduct a search of regulatory agency records to see if there are currently, or were previously, <br />any reports of hazardous materials contamination or usage at the sites or contamination at other <br />nearby sites within the ASTM-specified search radius that could impact the site <br />■ Review records maintained by local regulatory agencies, including the fire department, health <br />department (Certified Unified Program Agency), building department, Regional Water Quality <br />Control Board, and Department of Toxic Substances Control (DTSC) <br />• Review historical source information, including historical aerial photographs, historical <br />topographic maps, Sanborn fire insurance maps, and City Directories <br />• Review previous environmental investigations, soil sampling reports, or remediation plans as <br />provided by the City <br />• Conduct a site reconnaissance and document current conditions <br />■ Evaluate the potential for vapor intrusion risk <br />■ Conduct a search of environmental liens and activity use limitations for the project assessor's parcel <br />number (if applicable) <br />■ Interview the owner(s) and/or site representative(s) regarding the environmental history and <br />background of the site <br />The findings of the investigation will be summarized in a Phase I ESA report. As per the ASTM <br />Standard, the report will list RECs identified for the site, as well as historical RECs, controlled RECs, <br />and significant data gaps. If the findings of the Phase I ESA indicate a potential impact of hazardous <br />wastes or materials on the site, Dudek will include recommendations for further assessment and/or <br />investigation (e.g., Phase II ESA). <br />1 ASTM E 1527-21 was released on November 17, 2021. Environmental Protection Agency (EPA) concurrence with the new <br />standard will reportedly take up to one year. Thus, compliance with the All Appropriate Inquiries rule to qualify for an <br />exemption from Comprehensive Environmental Response, Compensation, and Liability Act liability will remain under <br />E 1527-13 until EPA concurs with the new standard. <br />Various Environmental Services 12 <br />