Laserfiche WebLink
UNDERGROUND TANK EXCAVATION <br /> During the week of 29 September 1986, AEMC removed eight tanks <br /> from two excavations (see Attachment 1 , Site Plan), one con— <br /> taining six product tanks (Tanks A,B,C,D,E,F) and the other <br /> containing two waste ink tanks (Tanks G,H). A Case 580 backhoe <br /> was used to excavate the tanks. A mobile crane was subcontracted <br /> to remove the three larger tanks (Tanks A,B,C) and a backhoe <br /> removed the five smaller tanks. Before removal, all tanks were <br /> purged of explosive vapors with dry ice. <br /> After removal and visual inspection, four of the eight removed <br /> tanks appeared to be in excellent condition with no visible signs <br /> of rusting or pitting. The remaining four (Tanks A,F,G,H) <br /> appeared to be rusty, but with no indications of leaks or holes. <br /> Tanks were cleaned onsite by Gold Bond Building Products (see <br /> letter dated 15 October 1986, Attachment 3). After cleaning, all <br /> the tanks were removed from the site for metal salvaging. <br /> The excavation containing the six product tanks had no visible <br /> signs of stains, but a slight odor was detected. Soils con— <br /> taining the strongest odors were segregated from the other <br /> excavated soils. Refer to Attachment 1 for pile locations. <br /> The second excavation (Tanks G and H) had visible ink stains. <br /> Staining was limited, however , to a depth of less than six inches <br /> along the sides and bottom of the excavation. The thickest areas <br /> were located at the top of the vertically standing tanks. In <br /> 2 <br />