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Qrk Plan for Monitor Well Closure <br /> Pilkington North America <br /> Page 3 <br /> Grout Volume Calculations <br /> MONITOR WELLS <br /> V=Vc+Vf <br /> Where: VC=.inner volume of PVC casing=7 rc2ht <br /> Vf=volume of filter pack= (71 ra2h2.n)—(n r2h2) <br /> n=estimated porosity of filter pack(0.25) <br /> and, <br /> rc=radius of PVC casing <br /> ra=radius of borehole annulus <br /> h, =height of PVC casing <br /> h2=height of filter pack <br /> l ft3 =7.48 gallons <br /> Table 1 <br /> Grout Volume Calculations <br /> Monitor r. -ra hl h2 V, Vf. V <br /> Well (feet) (feet), (feet) (feet) (gallons) (gallons) Approximate Total Volume of Grout <br /> (ingallons) <br /> MW-17 0.083 0.333 19.00 16.50 3.10 8.08 11:18 <br /> MW-18 0.083 0.333 19.00 16.50 3.10 8.08 11.18 <br /> '1 <br /> il� CONDOR <br />