Laserfiche WebLink
TABLE 1 <br /> € FIELD HEADSPACE MEASUREMENTS* <br /> Q ORGANIC VAPORS, PP.RTS PER MILLION (PPM) <br /> s <br /> € Approximate Depth Organic Vapor Readings <br /> Sample Number fII (nnr1) <br /> S-1 7 308 - 700 <br /> 4 <br /> S-2 8 200 - 700 <br /> S-3 8.5 200 - 900 <br /> r <br /> c: S-4 9 400 - 600 <br /> ' S-5 10.5 600 - 700 <br /> S-6 11 550 - 600 <br /> t <br /> i. S-7 12.5 300 - 700 <br /> 3 S-8 13 400 - 600 <br /> t 8-9 14 200 500 <br /> II S-10 15 200 - 450 <br /> T S-11 17 200 - 400 <br /> S-12 17.5 300 - 600 <br /> S-13 18 700 - 960 <br /> * Headspace measurements are commonly used as a screening tool to assist <br /> in determining the presence of volatile organic compounds (VOCs) in soil <br /> and are considered qualitative. Quantitative analytical values may <br /> differ significantly from headspace measurements since headspace values <br /> are a measurement of vapors which can include water and not concentra- <br /> I� <br /> tions of INC s- in soil. <br /> i <br /> f <br /> 3 ,. <br />