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<br />to <br />L- <br />2~8 <br />Ground <br />Cemenf <br />BLOW SAN!] <br />• <br />122 <br />144 <br />..- . <br />8' <br />LARAMIE <br />FORMATION <br />COAL SEAra <br />SHALE <br /> <br /> <br />Figure 6. Construction of piezometer DH X138. <br />3 '~ <br />4 ~ ~ Borehole <br />2~~ Schedule 40 PVC <br />Casinq <br />Gravel <br />Cement Seo! <br />Slotted Casinq <br />_~ <br />,: <br />