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<br />~ <br />~ <br />r-' <br />L <br />n <br />r <br />[ <br />r" <br /> <br />Limited Phase II Environmental Site Assessment <br />8-Acre Property, Fairhaven Memorial, Santa Ana, California <br /> <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 />method 6010B. <br /> <br />RESULTS <br /> <br />SOIL SAMPLING <br /> <br />No soil discoloration was noted for the soil samples collected. Soil was comprised primarily of <br />light brown, dry, loos~ silty sand at the surface, becoming dense silty sand at 3 feet below grade. <br />No groundwater was encountered in the borings. <br /> <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 /> <br />DISCUSSION <br /> <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 Cali fomi a Department of Toxic Substances Control (DTSC). <br /> <br />" <br /> <br />-, <br /> <br />Pesticides in Soil: The USEP A has developed risk-based Preliminary Remediation Goals <br />(pRGs) for various pollutants in soil (USEP A Region IX, Preliminary Remediation Goals Tables, <br />2004). PRGs can be used to screen pollutants in environniental 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 groundwate~. <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 pestic~des (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 /> <br />~j <br /> <br />J <br /> <br />Varying levels of the pesticides 4,4'-DDE (ND to 8.311lg/kg), 4,4'-DDT (ND to 30.3 Ilg/kg), <br />and Chlordane (ND to 68.8 Ilg/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 USEP A criteria, <br />none ofthe samples with detected levels of pesticides exceeded their respective PRGs for <br />residential or industrial soils. <br /> <br />r <br /> <br />Rincon Consultants <br /> <br />31tA,.69 <br /> <br />