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t Limited Phase II Environmental Site Assessment <br />8 -Acre Property, Fairhaven Memorial, Santa Ana, California <br />grade were placed on hold pending analytical results from the 0.5 and 1 foot samples. Following <br />the initial analysis, the 0.5 -foot sample from boring HA -6 was analyzed for soluble lead by EPA <br />f method 6010B. <br />RESULTS <br />SOIL SAMPLING <br />No soil discoloration was noted for the soil samples collected. Soil was comprised primarily of <br />light brown, dry, loose silty sand at the surface, becoming dense silty sand at. 3 feet below grade. <br />No groundwater was encountered in the borings. <br />A summary of the soil analytical testing program is included in Tables 1 and 2. Copies of the <br />laboratory analytical reports are included in Appendix 1. The pesticides Chlordane, 4,4 DDE, <br />and 4,4 DDT were detected at varying concentrations in the soil samples collected from 0.5 and 1 <br />feet below grade. Varying concentrations of metals were detected in the soil samples collected <br />[ from 0.5 and 1 feet below grade. <br />DISCUSSION <br />This section provides a discussion of the significance of the reported site contaminant <br />- concentrations relative to published thresholds. To evaluate the significance of the reported <br />contaminant levels in the soil samples collected from beneath the subject property, we compared <br />these levels to threshold levels established by the United States Environmental Protection <br />Agency (USEPA) and the State of California Department of Toxic Substances Control (DTSC). <br />Pesticides in Soil: The USEPA has developed risk-based Preliminary Remediation Goals <br />(PRGs) for various pollutants in soil (USEPA Region IX, Preliminary Remediation Goals Tables, <br />2004). PRGs can be used to screen pollutants in environmental media, trigger further <br />investigation, and provide an initial cleanup goal. PRGs consider exposure to pollutants by <br />means of ingestion, dermal contact, and inhalation, but do not consider impact to groundwater. <br />PRGs have been developed for both industrial and residential sites. Residential and industrial <br />PRGs for pesticides are listed in Table 1. Pesticides were detected at varying concentrations in <br />the soil samples collected and analyzed for pesticides (Table 1). The detected concentrations of <br />pesticides were all below their respective PRGs for residential properties and substantially less <br />than their respective PRGs for industrial properties. <br />Varying levels of the pesticides 4,4' -DDE (ND to 8.31 µg/kg), 4,4' -DDT (ND to 30.3 µg/kg), <br />and Chlordane (ND to 68.8 µg/kg) were detected in the soil samples collected and analyzed for <br />pesticides. Table 1 provides a comparison of the concentrations of pesticides detected at the site <br />with their respective PRGs for residential and industrial sites. Based on the USEPA criteria, <br />none of the samples with detected levels of pesticides exceeded their respective PRGs for <br />residential or industrial soils. <br />rRincon Consultants <br />341Ar69 <br />