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�j <br /> Mr. Harlan Knoll <br /> San Joaquin County Public Health Services <br /> Re* Heinz Facility, 757 E 11th St., Tracy <br /> July 1E, -1991 <br /> Page 2 <br /> � (Water �:ali <br /> Q ty) action levels Analytical data is presented on Table 1. The laboratory data <br /> 3 sheet, chain-of-custody, and monitoring data are included as Attachment 1 <br /> Since the area has been newly capped with asphalt and most of the contaminated soil has been <br /> removed,remaining contaminated vadose soils do not present a significant threat to groundwater. <br /> Therefore additional excavation is not warranted, particularly considering the physical <br /> restrictions involved <br /> The next monitoring will take place in October of 1991 As you discussed with Steve Jacques <br /> of our office, you will be notified in advance and another attempt to Iocate MWl will be made, <br /> WaterWork will take depth to water measurements, purge, and collect groundwater samples <br /> from MW2 and MW3; and from MWI if it can be successfully located. If not, we will again <br /> include gradients from the three previously mentioned sites to verify the local gradient direction. <br /> A monitoring tart will be submitted when all the sampling analytical results are received. <br /> If you have any questions or comments please contact me at our Escalon office at 209/838-3507. <br /> Sincerely, <br /> RESNA Industnes/WaterWork Corp. <br /> Lois Frantz <br /> Staff Geologist <br /> ua <br /> &fLA...0 Lb.Q <br /> Nora Kataoka <br /> CA Registered Civil Engineer No 38322 <br /> r <br /> t <br /> t <br />{ LF/rw <br /> Attachments <br /> pc: Nick Kosta, BJJ Trucking <br /> RCWQCB - Central Valley Region, Jim Maughan <br /> BTrL:90o wr <br />