Beginning of the excavation started on October 2, 2000.
Excavation of clean soils was first removed to access the
petroleum-contaminated soils beneath. The contaminated soils were then
piled into a 3000-ton (2,300 cubic yard) soil stockpile located on the
subject property at the corner of E. 16th Street and Davenport
Avenue. Soil pile treatment was selected so that the soil pile could be
moved to the adjacent property and construction of the new building
could continue. The stockpile was treated with Bio Rem’s proprietary
H-10® bacteria using a lancing methodology. The stockpile was
then tested after remediation. A layout of 23 sample locations in seven
rows across the north-south axis of the pile was used for sampling. This
consisted of a 1-inch diameter PVC conduit driven into the pile to a depth
of 4 feet to 7 feet below the pile surface, in order to extract samples
for laboratory analysis.
The treatment with Bio Rem H-10™ bacteria
began on December 2000 and samples analyzed by an independent lab
confirmed acceptable levels of BTEX in their report dated July 20, 2001. The results of
the laboratory analysis were obtained using U.S. EPA Method 8015B as
required by the Ohio Bureau of Underground Storage Tank Regulation Board.
