Laserfiche WebLink
COIL GAS SURVEYS <br /> Most subsurface contaminants (e. g. gasoline, oil and various <br /> chemical (s) contain volatile components that migrate to the <br /> surface. These gaseous components can be sampled at shallow depths <br /> to delineate the composition , extent , and magnitude of subsurface <br /> contamination . Consequently, soil gas surveys are usually the <br /> optimum first stele in soil and groundwater investigations for <br /> locating contamination , determining its source, and in focusing <br /> remediation efforts . <br /> TYPICAL SOIL GAS SURVEY RESULTS <br /> • SAMPLE STATION <br /> LOCATIONS <br /> BURIED TANK <br /> o c <br /> • 8 8, • • ,�� • • <br /> i <br /> • • Too <br /> • 50° <br /> • • • <br /> • <br /> • • • <br /> ,o <br /> M1� <br /> VOLATILES MAP SHOWING AREAS OF GASOLINE MIGRATION AIN ppb) <br /> Sail gas applications include: <br /> - Screening of site to determine extent , composition and <br /> magnitude of contamination . <br /> - Location of source of contamination <br /> - Provide basis for monitoring Well and/or recovery well site <br /> selection monitoring of remediation efforts. <br /> - Post.-remediation evaluation <br />