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Burick <br /> Addendum II B.C.&D. Properties <br /> Project No. 01-5.1 <br /> April 13,1992 <br /> Page 3 <br /> The groundwater samples will be analyzed for BTEX and TPH-Gasoline by EPA <br /> method 602 and 8015M/LUFT respectively at GeoAnalytical Laboratories in Modesto. <br /> The detection limit for the EPA 602 (BTEX) analysis ranges from 0.3 to 0.6 deg/l in <br /> water and the detection limit for the TPH-Gasoline analysis is 0.5 mg/l. <br /> Recommendations <br /> In light of the site's low levels of contamination and it's natural ability for <br /> hydrocarbon attenuation by the microbial breakdown conditions present in the <br /> shallow groundwater; Geological Technics -Inc. recommends that water quality <br /> analyses be augmented by monitoring the dissolved oxygen and carbon dioxide <br /> content of the groundwater. Biological degradation of hydrocarbons in the <br /> groundwater would be marked by increased levels of carbon dioxide in comparison <br /> to background levels (non contaminated up gradient well, MW-3). <br /> Respectfully submitted, <br /> d� � eQ�Ffssr�� <br /> GEOLOGICAL TECHNICS INCR1 KAMANOW j`cFo�o <br /> Raynold I. Kablanow II, Ph.D. a <br /> W <br /> Registered California Geologist #5234 * NO,5234 <br /> Registered Environmental Assessor #901 s <br /> enclosures t9r�OF CAlW�0.rP <br /> ao Linda Turkatte, San Joaquin County <br /> Elizabeth Thayer, CRWQCBCVR <br />