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SUMMARY <br /> Monitoring wells MW-1, MW-2, and MW-3 were again sounded and sampled on August 11, <br /> 1995 Utilizing a Keck' interface probe, the W W Irwin, Inc staff geologist intercepted the <br /> piezometric surface in the wells at an average depth of 31 82 feet, indicating that the water table <br /> has risen 0 43-foot in the three months since May 9 when the average depth-to-water in the wells <br /> was 32 25 feet bsg Due to a very wet winter and spring, the water table has risen an average <br /> of 4 21 feet since the wells were sampled on February 6, 1995 <br /> Using the three-point method, the calculated local direction of ground-water flow on May 9, <br /> 1995 was approximately S89°E (very nearly due east) along a gradient of 0 003 foot/foot The <br /> flow direction has shifted 9' to the east and north since May 9, 1995 when it was S80°E <br /> Ground-water samples were collected from the three wells, transported on ice under chain-of- <br /> custody, and received at Sherwood Labs on August 11, 1995 The samples were analyzed for <br /> oil & grease, diesel, gasoline, and BTEX constituents The report of analytical results revealed <br />' wholly nondetectable concentrations of all constituents with the exception of toluene, which was <br /> revealed in the sample collected from MW-3 at the fractional concentration of 0 4 jug/f <br /> The next and final monitoring activity of the present contract is scheduled for early November, <br /> 1995 <br />` CERTIFICATION <br /> Should any questions arise regarding the information contained in this report, or if we may be <br /> of further service, please contact our Merced office at (209) 725-2085 W W Irwin, Inc is not <br /> responsible for undisclosed or hidden, site-specific information or conditions <br />' Respectfully Submitted, <br /> IW.W. Irwin, Inc <br /> 5 �eD G <br /> O �o �aE t_ <br /> _ �►� DAYNE L FRARY �N ��Q' CP <br /> Q No.02980 in <br /> Dayne L trary, Regional Manager o ° '30-96 0 <br /> Registered Geologist No 4456 N N0 4456 Q <br /> Registered Environmental Assessor No 02980 �j� 16-31-4-7 <br /> OF C P+L�� �p�CAuf <br /> W W Ir"" Inc <br /> Project No 33236 00 <br /> August 1993 6 <br /> I <br />