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Observation WeillMonitoring <br />Manholes <br />Observation manhole, 12" diameter with 18" long skirt, <br />designed for sandy soil conditions. Cover locks to the <br />body using (2) cap screws. <br />Materials <br />Body: Cast iron with steel skirt <br />Cover: cast iron <br />Product No. & Suffix: <br />104-GWO-1000 <br />Observation Manhole w/plain cover WT.: 32.02 lbs. <br />104-GWO-1012 <br />Observation Manhole w/E-299-M cover WT.: 40 lbs. <br />(see page 32) <br />- (not shown) <br />i <br />Consists of an OPW 104-A manhole with the E -299-M <br />l j observation well cover. (See page 32). <br />WT.: 27.75 lbs. <br />Product No. & Suffix: <br />104 -AW -1212 <br />Monitoring manhole, 18" diameter with 12" long skirt. <br />Large enough to accommodate popular brands of elec- <br />tronic underground tank monitoring probes, conduit and <br />junction boxes. <br />Materials <br />Body: cast iron with steel skirt <br />Cover: Plate steel, 3/e" thick <br />WT.: 45.4 lbs. <br />Product No. & Suffix: <br />`` 104 -MW -0018 <br />tv <br />Consists of the E -299-M type observation well cover, with <br />(2) cap screws for locking to 104-GWO observation manhole. <br />Product No. & Suffix: <br />104 -LC -1212 <br />1 <br />