Laserfiche WebLink
March 16, 1988 <br />• .�• -' :��. a - <br />Roberts Oil Company <br />Page 10 <br />Ground water quality samples will be collected from the ground water <br />quality monitoring wells installed under Task 5, upon the completion of Task <br />6. Ground water samples will be collected from each of the monitoring wells <br />where no floating product is observed. At each well where no floating <br />product is observed, the well will be purged of stagnant ground water in the <br />well utilizing a nitrogen driven Teflon bladder pump. Purged water will be <br />drummed and stored onsite. Following purging, each well will be sampled <br />utilizing a clean Teflon bailer, and transferred to laboratory supplied sample <br />containers. The sample containers will be labeled, logged on chain of <br />custody forms and placed in an ice chest for transport to a State Certified <br />laboratory for analyses. In wells where floating product is less than <br />one-quarter inch, a ground water sample will be collected. In wells where <br />floating product is observed to be greater than one-quarter inch thick, only <br />the depth to ground water and the thickness of the floating product will be <br />recorded. A ground water sample will not be collected as it will be assumed <br />that where floating product is present the dissolved constituents have <br />reached equilibrium values. <br />Task 8: Laboratory Analysis <br />Laboratory analyses of the ground water quality samples collected will be <br />conducted in accordance with RWQCB guidelines. <br />Ground water samples will be analyzed for Total Volatile Hydrocarbons (TVH) <br />and Benzene, Toluene and Xylene (BTX) using EPA Method 602, <br />The samples will be analyzed un a normal (10 to 15 working day) laboratory <br />turn around time, unless rush charges are requested (rush charge 3 times the <br />normal rate). <br />