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z <br /> i.w <br /> 9 <br /> El-E14GROUNDWATER1 <br /> IF --171� ,i <br /> TECHNOLOGY, INC. <br /> -_a OIL RECOVERY SYSTEMS 1812 1 rihmo Road,SuiIC 4,Sacranienw,California'M15 1915!9:1•l81ys <br /> September 8, 1987 <br /> Project Number 202/799-8221 <br /> Mr. Kenneth Olds <br /> - Superintendent <br /> Lammer,ville School District <br /> 16555 West Van Sosten Road <br /> Tracy, CA 95376 <br /> Dear Mr. Olds ; <br /> Groundwater Technology , Inc . (GTI ) is pleased to present this <br /> proposal for additional site assessment work at the Lammersville <br /> School in Tracy , California . The proposed scope of work will <br /> entail the following work steps : <br /> Sample water from the bottom of the tank pit , if <br /> possible. <br /> " Install two additional 2-inch monitoring wells to a <br /> depth of 20 feet. one well will be installed <br /> approximately 15 feet northeast of the tank pit 4nd the <br /> second well due east in the County right-of-way (along <br /> the east side of Hansen Road) . <br /> Possibly install a third additional monitoring well <br /> between MW5 and the residence to the north of the <br /> school property, if product is detected in either of <br /> the first two new monitoring wells (during <br /> installation) . <br /> Collect soil samples at five foot intervals to the <br /> water table , using a split spoon sampler during <br /> drilling, <br /> Select one soil sample from each boring and submit the <br /> samples to an analytical laboratory for analysis for <br /> total petroleum hydrocarbons (TPH) and benzene,toluene, <br /> ethylbenzene and xylene (BTEX) concentrations. <br /> Develop and obtain a groundwater sample from all the <br /> wells for laboratory analysis for TPH and BTEX <br /> concentrations . <br /> ._ q(fic.,mmugwmet me CS..Canada amt 0h�-r eels <br /> . Wost.•rn rJJk"in;Camooat, Gil:Ton noe,CA,EngieuvA,GO. Twii;e.AZ - <br /> i <br />