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V <br /> Excavation Remediation Report Advanced Environmental Concepts,Inc. <br /> V <br /> 2.0 BACKGROUND <br /> As a precursor to foreclosure,AEC performed a Preliminary Site Assessment (PSA) of the subject property <br /> on behalf of Prudential Agricultural Investments during August and September, 1996. Two former <br /> underground storage tank (UST) emplacements previously containing a total of 3 UST's were identified in <br /> the compound area south of the residential dwelling in the central parcel of the property during the course <br /> �+ of the 1996 PSA. The central parcel consists of approximately 1.25 acres of land occupied by single-family <br /> residential dwelling, garage, office, domestic well pumphouse, old almond huller, and several outbuildings <br /> and storage sheds. This parcel is segregated from the remainder of the property and identified as the <br /> Paulson Life Estate. The majority of the property is developed as irrigated agricultural fields and orchard <br /> and contained within parcels formerly identified as the Bogetti & Sons property. The 3 UST's, identified as <br /> 2-500 gallon gasoline tanks and 1-500 gallon diesel tank, had been excavated and removed from the <br /> Paulson Life Estate parcel during July, 1992. No UST removal permitting, regulatory oversight, or soil <br /> r•• sampling was performed during the 1992 excavation and removal procedures. <br /> As the second phase of this Prudential project,AEC advanced exploratory soil borings and collected soil and <br /> groundwater samples in order to assess the presence or absence of petroleum-based contamination in the <br /> `" former UST emplacements during January 1997. These borings also served to quantify concentrations of <br /> contaminants present. Refer to Figure 3 for the estimated locations of the former UST emplacements and <br /> the first series of exploratory assessment borings. The analytical results of samples retrieved from the <br /> 60 January 1997 series of borings are presented in Tables 1 & 2 (the tabulated results are separated into soil <br /> samples and groundwater samples because of differences in the units of measurement). <br /> TABLE -1 <br /> Analytical Results -Soil Boring Samples <br /> 01/09/97 <br /> (ppm) <br /> CONSTITUENT TPH-D TPH-G BENZENE TOLUENE ETHYLBENZENE XYLENES <br /> rr SAMPLE I.D. <br /> B-1-5' ND NA ND ND ND ND <br /> v B-1-10' ND NA ND ND ND ND <br /> B-1-15' ND NA ND ND ND ND <br /> �• B-2-5' ND NA ND ND ND ND <br /> B-2-10' ND NA ND ND ND ND <br /> B-2-15' ND NA ND ND ND ND <br /> B-3-5' ND NA ND ND ND ND <br /> �.. B-3-10' ND NA ND ND ND ND <br /> B-3-15' ND NA ND ND ND ND <br /> r,. B-4-5' ND NA ND ND ND ND <br /> Project: AEC 96C-1707 2 <br /> 4r <br /> •ENVIRONMENTAL CONCEPTS WITH DESIGN IN MEND <br /> 4400 ASHE ROAD.0208 • BAKERSFIELD.CA 93313 805/831.1646 FAX 805/831-1771 <br /> 1.0 <br />