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��tY� x _ _„ jr`y,y.a.:.N... :.,�^ —•,y .: `.- "•-vLcC: - _wt.� d]r.:`i 7 y '.`i 7.`i �:.- S, .. - <br /> a. <br /> SAIiPLE .PLAIT <br /> ' SAMPLE OBJ8CTI98 <br /> The purpose of this sampling plan is to identify the <br /> '. presence of contamination beneath the tank once it has been <br /> removed. Samples will be collected from beneath each individual' <br /> a compartment as required by the SJCEHD. Samples will be collected <br /> at the extreme ends of each compartment and from the approximate <br /> 'L ycenter area of each compartment. Samples will be collected <br /> approximately 12-24 inches below the bottom of the removed tank <br /> compartments in undisturbed native soil. <br /> . Sample analysis performed will include total extractable <br /> ' petroleum hydrocarbons (TEPH) and benzene, toluene, xylene and <br /> ethyl benzene (BTXE) constituents in accordance with minimum <br /> . laboratory verification analysis for oil as set by the SJCEHD. <br /> Additional sample analysis will be performed only as required by <br /> the SJCEHD upon request. All sample analysis .will be performed <br /> by ETC Multi-Tech Laboratories located in Santa Rosa, California. <br /> Analysis will be performed on a normal 10-working day turnaround <br /> ' basis, <br /> SOIL SAMPLE COLLECTION <br /> SURFACE SOIL SAMPLE COLLECTION <br /> 4 N r:�br7 rOr-1 ""tv RFo_ sI►"+�s-rn1(i� . <br /> The following procedures will be followed during the <br /> �i collection of surface soil samples from depths of 0 to 6 inches: <br /> o The sample location will be carefully cleared of <br /> debris, pebbles, and other obstructions. <br /> o One 6-inch long clean brass tube will be placed in the <br /> core soil sampler and the core soil sampler will be <br /> ' assembled and attached to hammer device. <br /> o The sampling assembly will be lowered to the surface <br /> ' sample point, it will be driven into the soil manually <br /> using a slide hammer device, and then retrieved from <br /> the hole. <br /> ' o The core soil sampler will be dismantled and the sample <br /> recovery will be noted. <br /> ' a If collecting of the sample is not possible, an <br /> alternate sample location as near to the original <br /> sample location will be chosen and documented. <br /> I <br /> 258 <br />