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• Working To Restore Nature <br /> Well MW6 was reported to contain toluene (17 parts per billion [ppbl), xylenes (33 ppb), ethylbenzene <br /> (8 8 ppb), and TPHg (200 ppb) Laboratory reports with cham-of-custody documents are included in <br /> Attachment 2 <br /> RECOMMENDATIONS <br /> RESNA, on behalf of the responsible party, will continue to monitor and sample groundwater in <br /> accordance with the revised groundwater monitoring program which was approved in PHS/EHD <br /> correspondence dated August 4, 1993 Wells MW1, MW4, MWS, and MW6 will be sampled during <br /> the second quarter of 1994 A quarterly report will be submitted in accordance with the monitoring <br /> program The quarterly report will include geophysical illustrations of the groundwater gradient and <br /> the estimated zero line of dissolved benzene contamination <br /> If you have any questions or comments regarding this project, please contact John Lane at (209) 838- <br /> 3507 <br /> Sincerely, <br /> RESNA Industries Inc <br /> J r <br /> John P Lane <br /> Project Geologist <br /> / r <br /> Gregory P Stahl <br /> CA Registered Geologist No 5023 <br /> Attachments Table 1 Groundwater Elevation Data <br /> Table 2 Laboratory Analysis - Water <br /> Figure 1 Site Location Map <br /> Figure 2 Groundwater Gradient Map <br /> Attachment 1 Groundwater Monitoring Data, Well Purge Logs <br /> Attachment 2 Laboratory Reports, Chain of Custody Documentation <br /> PC CRWQCB <br /> Yvonne Mabee <br /> Donald McShane <br /> 1500751QUARTLYI4QR-1993 FNL 2 <br />