Laserfiche WebLink
RUSS CHAPIN 209-464-6947 11-17-95 07:49 P.06 <br /> Mr. Russell F.Chapin, Sr. <br /> Noveiiil-rr 15, 1995 <br /> t'agr. 5 <br /> We recommend installing an internal combustion'engine unit equipped with a 15 kW <br /> 6r1kri1tt,r unit which m-4ill increase the throughput capability of the engine. it is our,iutlgmettt that <br /> clic site could make use of an internal combustion engine for a poriod not likely to cg"ed 6 to 12 <br /> ttti}itllhs, alter which it Would he appropriate to replace the engind with a blower extraction unit <br /> using activaled canyon tis the primary emissions control method.;17hr.tinting of the switch it) <br /> blower and carbon filters will he made when projected utility and carbccn costs for the blower <br /> system ,arc less than filet"d utility costs associated with the engine units. All remedial <br /> cyttipluci71 will he designed to he easily transported or stored. <br /> OPULATE AND hAMAIl-SYSTEM <br /> The system will be operated and maintained at minimun)monthly intervals with quarterly <br /> repom%of system performance, <br /> INTLIUM VERIFI ATiQN.SA.MPLING <br /> Progress sampling was requested in the request for bid,which was to consist of drilling <br /> mil horintr4 acid evaluating selected soil and/or groundwater samples. We do not recommend <br /> this lrrncedure. Varefnl monitoring of the system inlet concentrations for hydroeftrbons and other <br /> rnminetcm �aicic a,�oxygen.should allow reasonably accurate estitnxlion of The sift•PI.AWs without <br /> un-iiirccs,,ary site:disturbance by drilling and sampling operations. <br /> YERIF'IC'ATION SAMPLING <br /> Verification sampling is proposed to consist of collection and analysis of samples fmm <br /> drive-pcitnt sampling, a quick and cast-effective way of collecting undisturbed soil acid <br /> groundwater samples, The method involves hydraulically pushing a 2-in probe to collect <br /> sarnplcs The method also has the added advantage of producing no drill cuttings acid ininirniz,ing <br /> site:tii�turtynnae:. We should be Able to generate 8 to 12 or more penetrations within n day. We <br /> expect that this should be sufficient to evaluate subsurface conditions at the site. <br /> s <br /> 445l�•Pl <br />