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Project No 034-98081 <br /> Appendix B <br /> • Samples were labeled with the project number, the sampler's initials, the boring <br />' number, and the time and depth at which the sample was obtained <br /> • Following sample labeling, each sample was placed into an ice chest and <br /> maintained at a temperature of approximately 4° Celsius, to limit the <br /> volatilization of any PHCs present <br /> • The soil borings were backfilled with neat cement and grout-well bentonite <br /> (20%solids) <br /> • Soil samples from 20, 30, and 40 feet bgs were collected and submitted for <br /> analysis of PHCs Soil samples were collected, maintained, and transported <br /> under chain-of-custody protocol to a state-certified laboratory for chemical <br /> analysis Selected soil samples were analyzed for the presence and <br /> concentration of benzene, toluene, ethylbenzene, xylenes, (BTEX), and total <br /> petroleum hydrocarbons as gasoline (TPH-G) <br /> • Groundwater samples were collected by pushing a Hydropunch® sampling <br /> device to the target depth (�34 feet bgs) and retracting the drill rod to allow <br /> groundwater to enter the sampling device A water sample was bailed from the <br /> device and transferred to appropriate containers for delivery to the analytical <br /> laboratory Where groundwater was slow to recharge, the borings were <br /> overdrilled to 40 feet The auger was retracted to 34 feet bgs and a pre-cleaned <br /> disposable Teflon® bailer was used to collect the groundwater sample After <br /> collection, formation water was decanted and transferred into appropriate <br /> containers for delivery to the analytical laboratory Sample analyses and <br /> handling followed the methods stated above for soil samples <br /> l <br /> ' KRAZAN & ASSOCIATES, INC <br /> Offices Serving the Western United States <br /> 34980ai sos <br />