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<br />f~ <br />~ <br />r- <br />~ <br />n <br />[ <br />~J <br /> <br />Limited Phase II Environmental Site Assessment <br />8-Acre Property, Fairhaven Memorial, Santa Ana, California <br /> <br />EXECUTIVE SUMMARY <br /> <br />This report presents the results of a limited Phase II environmental site assessment (ESA) that <br />was performed at the Fairhaven Memorial Park & Morturary site located at Cambridge Avenue <br />and Fairhaven Avenue in Santa Ana, California. The purpose ofthe site assessment was to <br />determine if soil at the subject property has been affected by historical agricultural use associated <br />with the site. <br /> <br />On October 17, 2005, eight hand auger borings (HAl through HAS) were advanced on the <br />subject property. The hand auger borings were advanced to 3 feet below grade. Five soil <br />samples were collected from each boring at depths of 0.5, 1, 1.5,2 and 3 feet below grade. <br /> <br />Varying concentrations of pesticides were detected in the soil samples collected and analyzed for <br />pesticides. None ofthe detected pesticides exceeded Preliminary Remediation Goals (PRGs) or <br />Total Threshold Limit Concentration (TTLe) thresholds established by the United States <br />Environmental Protection Agency (USEP A) or the State of California Department of Toxic <br />Substances Control (DTSC). <br /> <br />,,,~ <br /> <br />V arying concentrations of metals were detected in the soil samples collected and analyzed for <br />metals. The PRGs for residential and industrial settings for arsenic are 0.062 and 0.25 mg/kg, <br />respectively. Background concentrations of arsenic found in western United States soils (non- <br />contaminated sites) range from 0.10 to 97 mg/kg (Shacklette and Boerngen, Element <br />Concentrations in Soils and Other Surficial Materials of the Contermil1ous United States, USGS, <br />1984). The USEP A states that generally they do not require cleanup below natural background <br />levels. In light of this fact and in our experience, regulatory agencies typically consider the use <br />of local or regional background concentrations as the threshold concentration for requiring <br />further investigation or remediation. All of the analyzed soil samples detected arsenic <br />concentrations above the PRGs for residential and industrial settings and all of the detected <br />concentrations are within the range of naturally occurring background concentrations for arsenic <br />in western United States soils. <br /> <br />--' <br /> <br />The levels of the other metals identified in the soil samples collected from the subject property <br />were within the published background ranges for metals in California soils. In addition, the <br />levels of metals detected were compared to total threshold limit concentration levels established <br />by the DTSC. The TTLC is used to determine whether excavated soil would be classified as a <br />hazardous or non-hazardous waste for disposal purposes. STLC and TTLC levels for metals are <br />listed in Table 2. Lead was detected in the 0.5-foot sample from boring HA-6 at a level that <br />warranted soluble (STLC) analysis. The additional STLC analysis revealed non-detect levels of <br />soluble lead. Metal concentrations detected for all of the other samples analyzed for metals did <br />not exceed their respective TTLC levels and were not high enough to warrant soluble (STLC) <br />analysis. <br /> <br />Based on the results ofthis limited Phase II assessment, no further assessment is recommended. <br /> <br />r <br /> <br />Rincon Consultants <br /> <br />31A,.66 <br />