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. . .. ------- an'' 61br 1163 P. 61 - ----- --- ------- Soil and Vapor Sampling ��C s Is-- _ -- --- FF ® FRM�Ti SRV 1/F'��rH SOIL_SAMPLING SYSTEM VAPOR SAMPI.NC, A piston-type soil sampler can be Vapor sompinrq can be performed deployed with the CPT rigs, using either the Geoprobe®vapor Ram-Set or support truck to sarxtpling system or a specially collect relatwoC undisturbed soil designed filter probe attached to samples without generating any the piezocone. Both vapor Soil cultirigs. sampling probes are pusher)with the hydraulic iarn carr the CPT rig, The soil sampler is initially pushed or the Ram-Set system, in a "closed" position to the desired sampling depth interval. The Geoprobe varprar sample The inner cone tip pnrtion of the consists of a disposable steel lip sampler is then retracted to a which is puslied to the desired locked position leaving a holinvv sampling interval and then soil sampler with two inner 1 114' retracled. I his leaves a votci from diameter by 6" long stainless steel which a Vapor sample is cnilected soil sample tabes. The hollow The sample is collected using a sample tube is then pushed to vacuum I,>urnp to draw the vopor collect a soil sample. The fillet) sample thrrxigh disposable tubing sampler and deployment rods are to the Qround Surface then retrieved to the ground surface. Our filter probe module is located immediately arhind the piezorone A wireline soil sampler has also to collect vaFxar Samples at been developed by GreQg In discrete depth irrtc+r", 5;during a Situ to retrieve multiple depth CPT sounding. This system has the snail samples with a wireline advantage of collecting vapor ratt*r than retrieving and samples at muftiplf,depth redeploying the sampler rods at increments, while rabtaining the s=ach interval, soil stratigraphy with the piemcone. Generally,sample recovery ranges from 1 112 to 2 sample tulles,depending on soil type and degree of saturalion. For multiple depth sol sampling, this system may not be as efficient as soil sampling using a conventional drill rig. [UPf[I r1t, i)