ARCHIVED REPORTS XR0001834 - Laserfiche WebLink

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• 7 After purging,the temperature,pH and electrical conductivity will be checked every 10 minutes until they stabilize Stability will be achieved when two consecutive measurements of 0 5 units of pH are within two degrees Fahrenheit for temperature and within 5 percent of electrical conductivity measurement 8 The purged water will be dumped or pumped into barrels onsite for holding prior to determining proper disposal 9 The water samples will be poured from a disposable bailer or pumped directly into sample bottles For bottles without preservation, the cap and bottle will be rinsed two or three times with well water and filled, keeping the head space to zero For bottles with a preservation,no rinsing will be made and the sample bottle will be filled directly with minimum head space 10 Each sample container subrtutted for analysis will have a label affixed to identify the job site, sample date and time,and a unique sample identification number 11 The samples will be placed in a cooler with dry ice or blue ice for transportation to the analytical laboratory 12 The samples will be delivered to the laboratory as soon as possible If the samples are kept overnight, they will be refrigerated at 39 degrees Fahrenheit and delivered to the laboratory within 72 hours of sampling time 13 The chain-of-custody document will accompany the samples at all times The chain of custody document is to document possession of the sample from time of collection to its arrival at the analytical laboratory When samples are shipped,the responsible technician or geologist relinquishes custody of the samples by signing the chain of custody form, noting the date and time The delivering responsible technician or geologist will insure that the receiving sample control chemist at the analytical laboratory will conduct the • following inspection • verifies sample integiity, • confirms storage in the property container, • recognizes that an adequate volume of fluid has been collected for the required analyses, • identifies the method of preservation, • correctly identified what analyses are to be conducted, and • accepts custody for the laboratory when then conditions have been satisfied I4 The wellhead will be secured prior to departure w Mam\D\EnvironmentaMannarTexaco\Reports\041403QMR wpd