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STANDARD PROCEDURES Decontamination I All apparatus is brought to the site in clean and serviceable condition The equipment is decontarrunated after each use and before leaving the site Free Product Skimmer The column headed, VOLUME OF E%,L%USCIBLES REMOVED (ml) is included in the TABLE OF WELL GAUGING DATA to cover situations where a free product skimming device must be removed from the well prior to gauging Skimmers are installed in wells with a free product zone on the surface of the water The skimmer is a free product recov- ery device which often prevents normal well gauging and free product zone measurements The 2 0" and 3 0" PetroTraps fall into the category of devices that obstruct normal gaug- ing In cases where the consultant elects to have our personnel pull the skimmers out of the well and gauge the well, our personnel perform the additional task of draining the accumulated free product out of the PetroTrap before putting It back in the well This recovered free product is measured and logged in the VOLUME OF 1 vfNUSCIBLES REMOVED column Gauging at such sites is performed in accordance with specific direc- tions from the professional consulting firm overseeing work at the site on Shell's behalf Objective Information Collection Blaine Tech Sertiices, Inc performs specialized en,,ironmental sampling and documentation as an independent third party In order to avoid compromising the objectivity necessary for the proper and disinterested performance of this work Blaine Tech Services, Inc performs no consulting and does not become Invoked to the marketing or installation of remedial systems of any kind Blaine Tech Services, Inc is concerned only with the generation of objective information, not with the use of that information to support evaluations and recommendations concerning the environmental condition of the site Even the straightforward interpretation of objective analytical data is better performed by interested regulatory agencies, and those engineers and geologists who are engaged in the work of providing professional opinions about the site and proposals to perform additional investigation or design remedial systems Reportage Submission of this report to Interested regulatory agencies is handled by the consultant in charge of the project Any professional evaluations or recommendations will be made by the consultant under separate cover Baum Tech Services,Inc 94111 7-L-3 Shell 7910 Lower Sacramento Rd Stockton page 2