ARCHIVED REPORTS_XR0007984 - Laserfiche WebLink

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DVERVI E'.; Tlhs section Dresenks a brief summary or pracuccs requester b, Nrco Froaucts Company that are not normaliv included in the Grounawater Technotocry Inc Stanaara OQeraEtng procedures referenced aoove T ne practices were comalied from the Reauest for Sid for Groundwater Sampling at ARCO Retail Facilities in Northern California letter dated November 11 1993 by Mr Kvie Christie These practices are included for Arco sites for which Grounawater Technology performs the monitoring-and sampling ccitvities a) Use only Arco Products Chain-ot-Custodv Forms Fnr groundwater sample identification the depth the sample was collected is placea next to the well identification (i e MW10-5, means the _ sample-for_monnoring well MW_10_was collected-at 5-feet-below grace)--The laboratory will be notified in advance of the arrival of groundwater samples - _ b) -- Measure-depth to bottom of the rnanitonnrj wefts for the first event only C) Be consistent with the type of equipment used during the purging of groundwater monttonng wells For example, if a monitoring well is consistently hand bailed during purging do not switch to pumping to purge the well d) Use four 4-foot orange cones when accessing monitoring wells in driveways or parking lots. e)____Fefd-personnel must have station-manager approval=before disposirf§�bf trash-generated during field activities to on-site contafners f) Fill out. field reports, groundwater sample field data sheets, and summary of groundwater T_ _ - - - - -monitoring sheet-(to be stamped-by-a-Califointa registered geologist or engineer) for each site for documentation of field activities Copies of these forms are included with this attachment for reference g) Maintain well identification symbols and dear well boxes of debns as necessary h) Purge three (3) well volumes of groundwater from the monitoring wells prior to groundwater sample collection