Laserfiche WebLink
•} A S S Q C I A T E S I N C <br /> Monitoring well MW1 was purged a minimum of three well volumes and until the stabilization <br /> of electric conductivity, pH, and temperature was observed Subsequent to purging, groundwater <br /> was sampled and transferred to appropriate sample containers, using a clean, disposable baler <br /> with a bottom-emptying device to reduce volatilization Sample containers were then labeled <br /> with sample identification, placed on lee, and shipped under chain-of-custody to Sequoia <br /> Analytical Feld development/purge logs are presented in Attachment 1 <br /> Laboratory Analysis <br /> The groundwater sample from well MW 1 was analyzed by Sequoia Analytical for total <br /> petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, and xylenes <br /> (BTEX) by EPA Methods 801518020, and oxygenate fuel additives by EPA method 8260 <br /> Laboratory Results <br /> Only methyl tert-butyl ether (MTBE) was detected above the laboratory method detection limits <br /> The reported MTBE concentration was 5 40 parts per billion (ppb) No other constituents were <br /> detected <br /> Analytical results are summarized in Table 2 Laboratory data sheets and chain-of-custody <br /> documentation are provided in Attachment 2 <br /> If you have any questions, please contact our office at(209) 579-2221 <br /> Respectfully Submitted, <br /> ATC Associates Inc <br /> Tom J Lutterman, REA <br /> Project Manager E <br /> HOMSEY <br /> No G 140 <br /> Exr, :�O_-a � <br /> J anne Homsey, P E <br /> CA Registered Civil Engineer No C 47410 41, �,°.��q�� <br /> Attachments <br /> cc Mr Butch Schmidt, Stockton Unified School District <br /> Mr Marty Hartzell, RWQCB <br /> J <br /> w 117292 0001 lreportsl2 qmr 2000 doe 2 <br />