RES 89333 - Laserfiche WebLink

,I City of Pleasanton December 21, 1988 Quote No. 7097G Page 3-3 properly dispose of any contaminated water. EES can assist the client in arranging for transportation and disposal of any contaminated water on a time and material cost basis. Task 3.5 - Groundwater Samolin_~ Samples of the groundwater will be collected from each of the monitoring wells installed by EES and the existing monitoring well located near the fuel tank complex where no floating product is observed. The samples will be collected with a clean bailer and will be transferred in appropriate laboratory- supplied bottles. Samples will be labeled, logged on chain-of-custody forms, and placed in an ice chest for transport to a state-certified laboratory for analysis. In wells where floating product is less than 1/4-inch, a water ample will be collected. In wells where floating product is observed to be greater than one-quarter inch thick, only the depth to groundwater and the thickness of the floating product will be recorded. A groundwater sample will not be collected because it can be assumed that where floating product is present the dissolved constituents have reached equilibrium values. To ensure quality, a duplicate water sample will be taken from one of the existing monitoring wells during each sampling event. A bailer blank and a travel blank will also be taken during each sampling event. These blanks will be held at the laboratory pending results of the water samples. Task 3.6 - Surveying For the presentation of the data and the accurate determination of the groundwater flow direction, it is important to locate the monitoring wells and determine the surface elevations of the well casings. EES proposes to survey the monitoring wells and draft plot plans. The survey will be conducted using modern surveying equipment and methods so that adequate accuracy can be maintained and the plots will be of sufficient scale to portray the data in a useful manner.