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1 Combined Air S ar in IVa or Extraction Pilot Test <br /> Air injection and vacuum extraction will be operated simultaneously for the <br /> combined test The measurements to be taken at the beginning, during and after <br /> the combined test are the same as those for the individual tests and will use the <br /> same instruments The gauges used on the surrounding wells will be able to be <br /> easily switched over to read vacuum or pressure The air sparging injection rate <br /> will not exceed 1/3 of the soil vapor extraction rate Upon startup, the SVE system <br /> will be allowed to operate long enough so that soil vapor pressure in the <br /> surrounding wells and vapor points has been allowed to stabilize <br /> I <br /> ' <br /> I <br /> I � <br /> i f , <br /> ! I <br /> I I <br /> I'h� <br /> I <br /> II I I I I <br /> I i I <br /> CLEI <br /> ARWA'TER GROUP,INC 3 11/9/94 <br /> V�II 41,k I t ,ii` „, E� I!I ��I, I h4 <br /> I !I ��kl �I,l I IkF�Ef�yI,I,,I,`I�� I 6 9I I"�I I'��vI I'I Ii IIIH€I <br />