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This Sampling Report describes services performed by Blaine Tech Services, Inc. at this site on August 25, 1995. The work was undertaken in accordance with the August 24, 1995 request of Wright Environmental's Mr. John Lynch. This report describes our collection of environmental samples at the direction of Wright Environmental and contains a diagram showing where those samples were obtained. It does not seek to describe or explain activities which are larger in scope than the sampling we performed. Two important documents which are related to this Sampling Report are the Chain of Custody form and the Certified Analytical Report issued by the laboratory that analyzed the samples. The Chain of Custody form is presented as attachment to this Sampling Report and should be preserved along with the Sampling Report as a package of interrelated records. EXECUTION OF THE REQUESTED SERVICES Blaine Tech Services, Inc. personnel were sent to the site on August 25, 1995. Arriving there at 1245 hours, our representative met Mr. John Lynch and Ms. Linda Turkatte. The sampling was discussed. Sampling locations were indicated by Mr. Lynch as shown on the site diagram which appears on page 3. The open pit contained approximately two feet of water. We were informed that the pit had been pumped out on August 24, 1995 and had been allowed to recharge. The water standing in the bottom of the pit would, therefore, be recharge water. SAMPLE # SS-1 was a subsurface water sample taken from the water standing in the pit at a depth of approximately ten feet (10.0') below grade at 1300 hours. The sampling was performed at the direction of Mr. John Lynch and included the collection of 8 individual liter bottles of sample material. The sample material was collected with a proprietary sampling device which is mounted on a long extension pole. The pole is used to lower the sampling device into the water and then actuate the device so that a glass sample container is opened and water is allowed to enter the container. Once the sample container is filled, the device allows the'mechanism to close the bottle again before the sampling device is drawn up through the surface of the water which may contain sheen of petroleum hydrocarbons. The reason for collecting a subsurface sample is to avoid the disproportionate concentration of hydrocarbons which may form on the surface of a standing body of water. Soil samples were taken from the pit with the assistance of a backhoe as authorized by the RWQCB. SAMPLE #ESW-1 was a backhoe assisted soil sample collected from the side wall of the pit at 1350 hours. The sample was collected at the location shown on the page 3 diagram at an approximate depth of eleven feet (11.0) below grade. ti.. Blaine Tech Services,Inc.Report No. 950825-L-1 Wright Environmental @ Tracy New Police Facility page 2