Technical data

If the soil analyses indicate continued presence of elevated petroleum hydrocarbons,
additional nutrients are applied to the soils and the biodegradation process will contmue.
Treatment time will vary depending on the contaminant type, initial concentrations, and
time of year the treatment is employed. Treatment times will be shorter in the summer due
to the higher degree of biological activity during the warmer summer months.
Sampling Summa y and QAIQC
Table 3 provides a summary of the sampling to be performed at the site for initial
characterization, ongoing operation and maintenance, and final confirmation. The table
includes sample type, frequency, methods, turnaround times, sample quality control levels,
preservation and sampling techniques. Off-site analyses wiIl be performed by an NFESC
and North Carolina approved laboratory.
1.6 TREATED SOIL REMOVAL AND BIOCELL RECONDITIONING
Following confirmation testing, and completion of treatment to the specified standards, the
soil is pushed with a light bulldozer into stockpiles within the contained biocell for
placement outside the biocell at the designated location. The soil is directly loaded onto
transport vehicles parked on the ramp using a front-end loader or excavator. Although the
material is nonhazardous, each truck should be inspected by operations personnel to ensure
that vehicles are properly loaded, tarped if required.
The sand drainage layer is inspected following removal of the treated soil and prior t:o
arrival of the next batch.
Replacement sand is provided and spread proportionally if
necessary following a visual survey of the biocell.
1.7
RESIDUALS MANAGEMENT
During the course of installation and operations, small amounts of contaminated debris
including personnel protective equipment and nonhazardous rinse water is generated.
The
nonhazardous debris is containerized and stored on-site until transportation and disposal
can be arranged.
Nonhazardous liquids are processed through the nearby groundwater
treatment facility.
O&M Manual 1-7 Ol!-IW16032