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C � n ATTACHMENT A - i KLEINFF.LDER FIELD PROTOCOL -- A-t Monituring Well Purging and Sampling Purging and sampling of a monitoring well may he accomplished with'refinn bladder pumps and/or bailers.During the purging of the well,field parameters 011,conductivity, end temperature)are monitored. Samples are collected after the field parameters have {..; stobiliud(murmnlly requiring the removal of three to five well volumes)- Watcr sampling containers are supplied and prepared by the laboi story. These sample containers are - imediatelq'sealed after sample collection and placed in an iced molar.At the end of the m day,the water samples are delivered under chain-of-n stody to an analytical labnracnry - eertified by the slate for theplanned chemical analysis. .A-2 Sample Ifandling After labeling,the sample is immediately stared in an iced cooler for transport to the - naudes Klelnfelders name,job number,the date and lytical lahormory. The label inclI time the sample was collected,the employee number of the individual who performed the - l sampling,and a unique fl -nigh sample identification number, A custody al ts.afso. placed on the sample to such a way that any.attempt to tamper with mu sample easily'` visible. A Memfelder chain f custody form is attached to the caulor-The chain-nf-custody form includes Kle nfelde s name,address and telephone number,the employee number of the. s, s ..Individual who performed the'sampling,the sample numbers the data a d time the (4 - samples were collected,the number of containers each sample ouvpics;and-the analyses if for which the samples are being submitted. The chafn-of-custody form is signed by each , person who handles the samples;including all Kleinfelder employees and the receiving employee of the analytical laboratorywhen the samples are delivered. "1 -AJ Equipment rte otaminatinn To reduce the potential For cross.contamination between wells all developing and �.. sampling equipment is washed in a trisadiutn phosphate solution and rinsed n d slillcil.� - {E water or steam cleaned prior to use in the real monitoring well, }l' .. '` D\153-9a2] •.t _ _ ., . � 7 1�.