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- - <br /> 5. ANALYTICAL RESULTS <br /> The analytical methods are those required in the "Tri-Regional <br /> Guidelines" which are directives of the Regional Water Quality <br /> Control Board and required by the SJCEHD. <br /> The analyses completed were for Total Petroleum Hydrocarbons, as <br /> gasoline (TPHG) ; Benzene, Toluene, Ethylbenzene and Xylene (BTEX) <br /> via EPA Modified Method 8020/8015 and for the oxygenates using <br /> the EPA Method 8260 . <br /> SJCEHD requested, in the undated letter from SJCEHD to PIEDMONT <br /> LUMBER for additional groundwater sampling of MW-1 and MW-BT and <br /> analysis of those samples for Total Petroleum Hydrocarbons, as <br /> diesel (TPHD) . This was completed on September 13 , 1999 , with a <br /> report submitted to PIEDMONT LUMBER and a copy to SJCEHD. <br /> A. Soil Sampling Results <br /> Table 2 displays the analytical results of the soil sampling <br /> known tc have been done on the subject property. The 4-96 data <br /> were of a composite of two soil samples taken at approximately 2 <br /> feet below ground surface. The 7-96 data were collected in the <br /> UST excavation approximately 2 feet into the native soil below <br /> == the UST and can be seer_ in the JPCA tank removal report, dated <br /> August 12 , 1996 . The samples identified with MW or BT were <br /> collected during the monitoring well construction which occurred <br /> in November 1997 . <br /> The results of the soil samples in mg/Kg, i. e. parts per million <br /> (PPM) for TPHG and BTEX are shown in Table 2 . ND is < 1 PPM for <br /> TPHG and < 0 . 005 PPM for BTEX and MTBE . <br /> The soil samples which were analyzed for the Oxygenates had no <br /> detectable concentrations of the Oxygenates, the detectable limit <br /> are noted on the Laboratory Data Sheets. The Laboratory Data <br /> Sheets with Chain of Custody are contained in the Phase II Report <br /> completed for the subject property in November 1997 . <br /> B. Groundwater Sampling Results <br /> A cumulative tabulation to show groundwater fluctuations and the <br /> analytical results, for the quarterly events of groundwater <br /> sampling from the Monitoring wells, identified as MW-1, MW-2, MW- <br /> 3 and MW-BT in ug/L, i. e. parts per billion (ppb) , for <br /> Oxygenates, TPHG and BTEX are shown in Table 3 . <br /> 5 <br />