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Sampling and Analysis Plan for <br /> Phase II Environmental Site Assessment <br /> South Pointe Property: 701, 705, 833, 855 West Weber Avenue <br /> Stockton, California <br /> Background <br /> May 17, 2021 <br /> been so altered by urban development that identification of soil types is not feasible (WKA, 2008). <br /> Previous geotechnical and environmental investigations have identified shallow soils beneath the site as <br /> consisting of native sandy materials mixed heterogeneously with rubble and debris associated with <br /> historical building foundations and similar relics of historical site use. <br /> 2.6 IMPACT ON HUMAN HEALTH AND/OR THE ENVIRONMENT <br /> Previous environmental investigations have identified the presence of OCPs and lead at concentrations <br /> that exceed risk-based screening criteria for residential use. These screening levels are generally <br /> protective of the direct-exposure pathway, suggesting that in its current state, development of the site for <br /> residential use could result in adverse exposure and health effects for residential receptors. The site has <br /> not been screened for the potential presence of volatile organic compounds (VOCs) in soil vapor, a <br /> significant data gap considering the extensive historical industrial use of the site and surrounding area; <br /> documented local and regional impacts to groundwater from petroleum hydrocarbons and related <br /> compounds; and the current regulatory focus on vapor intrusion as a significant potential exposure <br /> pathway. The presence of VOCs in soil vapor could impact development of the site owing to potential <br /> concerns regarding intrusion of volatile vapors into indoor occupied spaces. Site-wide assessment of <br /> VOCs in soil vapor is proposed in this SAP. <br /> MProject No.: 185704833.5.3&5.4 2.7 <br />