Laserfiche WebLink
INKE <br /> with 1.4 ppb tetrachloroethene, 1.6 ppb 1,4 dichlorobenzene, 3.0 <br /> ppb 1,2 dichlorobenzene (Table 2). These results are consistent <br /> with those of previous sampling rounds by Dames and Moore. The <br /> r laboratory reports and chain-of-custody documentation is shown in <br /> Attachment 1. <br /> Based on the historical non detectable levels of petroleum hydro- <br /> carbon contamination in monitoring wells MW3 and MW4, and their <br /> location upgradient from the contaminated wells MW1 and MW5. <br /> Wa:•erWark proposes to discontinue sampling wells MW3 and MW4. <br /> If at some future time the groundwater should rise or there be a <br /> change in groundwater flow direction it may be necessary to <br /> reinstate these wells in the sampling schedule. <br /> Projected activities for the first quarter of 1991 include per- <br /> formance of a pumping test using well MW6, preparation of a <br /> remedial action plan and collection on an additional round of <br /> monitoring and sampling data. <br /> Activities during the coming quarter will be summarized and <br /> submitted to the Environmental Health Department by April 15, <br /> 1991. <br /> If you have any questions or comments regarding this report, <br /> please call Bill Channell or Russell W. Juncal at our Escalon <br /> office 209/838-3507. <br /> Respectfully, <br /> WaterWork <br /> Bill Channell <br /> Senior Geolog st <br /> l � <br /> Russell W. Juncal <br /> CA Registered Geologist No. 3864 <br /> JK/tdp <br /> Attachment <br /> pc. Al Nielson <br /> Jim Maughan <br />