BOC+ Slurry Injection Installation Instructions
BIOLOGICAL OXYGEN COMPOUND+PLUS (BOC+)
The main ingredient of BOC+ is calcium peroxide, which is among the safest of peroxides to handle. The composition is of food grade materials, and represents no significant health hazards concerning inhalation, ingestion, or skin contact.
BOC+ is shipped in two (2) parts: The first, part A, is calcium peroxide, a fine powder which, as an oxidizer is classified by DOT as "oxidizer - 5.1" and the container is identified with the yellow oxidizer label. The second, part B, is proprietary liquid amendments.
All field personnel should read "The Site Safety Plan" prior to the handling of or installation of
BOC+ and take precautions while applying BOC+. All field personnel should work upwind of the product as well as use appropriate safety equipment. These precautions would include eye and respiratory protection, gloves and clothing as appropriate by exposure duration and field conditions.
Personnel operating the field equipment during the installation process should have appropriate training, supervision, and experience.
RECOMMENDATIONS AND GUIDELINES
BOC+ can be injected into contaminated soil and/or the saturated zone of the soil, utilizing, push type hydraulic equipment, or hollow stem augers. The method that produces optimum results is slurry injection with hydraulic push type equipment and the use of a pressure pump, containing a slurry mix batch tank. For optimum results, the
BOC+ slurry should be injected within the entire vertical contaminated saturated thickness, including the capillary fringe. In addition, if also remediating the soil in the vadose zone this area should also be injected with slurry.
Since the chemicals of concern are not evenly distributed throughout the soil/groundwater matrix, the location of points for injection and
the amount of slurry should be determined on the basis of determining the areas of contamination concentrations. Ideally, the contamination and distribution have been characterized by horizontal isoconcentration contours.
The liquid add mixtures in BOC+
assist in the spreading of the product through the soil/groundwater matrix. Past field tests have demonstrated that a 40% slurry mix will spread approximately 25 feet in diameter in saturated soil and a
35% slurry mixture will spread approximately 10 feet in diameter in vadose zone soil.
Adjacent injection holes will aid in determining the slurry distribution, in that slurry will rise up through these adjacent holes thereby indicating adequate lateral slurry distribution. It should be of note that microbes migrate considerable distances
through out the soil. The soil/groundwater matrix is not consistent for all
sites. There are a number of physical soil/groundwater properties that influence lateral distribution, and the amount of
BOC+ that can injected at each point. A field test should be made to determine lateral distribution and quantity of slurry that can be injected in the soil/groundwater matrix and assisting in distribution of slurry by advection.
USE OF DESIGN CALCULATORS
Below are two calculators: the
Calculator for Slurry Mixture
BOC+ / Water Ratio
and the Mass of BOC+
in Soil Calculator
to assist the consultant in the design of the remediation project and approximate the amount of
BOC+ that would be injected in a contaminated zone, for a selected radius and depth.
DESIGN EXAMPLE 1. Determine the area be injected from the horizontal isoconcentration contours drawing. 2. Assume injection spacing, = 8' on centers and depth
of contamination = 15' 3. Determined the amount of
BOC+ required to remediate this area from either the Design calculations for
Saturated Zone or Vadose Zone. The results from either of these calculators would determine the pounds of
BOC+ required to remediate the volume of soil.
Example : 8 x 8x 3.14 / 4 = (50.24)1/2 = 7.08' width x
7.08' length x 15' deep, TPH = 220 ppm
622 lbs. of BOC+ required.
Having determined the amount of
BOC+ required for the selected area, the consultant, with the use of the Mass of
in Soil Calculator
based on a percentage of effective porosity, % BOC+ in slurry mixture, can determine the amount of BOC+ within the selected area. These assumed calculations can be confirmed with a field test, and the results of the field test can be used to make adjustments in the calculator. This calculator can assist in determining the injection spacing so to achieve the required amount of BOC+ required for the area.
As a design example for injection in the Vadose Zone, a theoretical design for distribution of
BOC+ would be as illustrated below:
1. Radius of influence = 8' dia. 2. Depth
of contaminated soil = 15 ft.
3. Vol. of Contaminated soil = 753.98 cu ft
4. Effective porosity = .30 5. Available void space =
226.19 cu.ft 6. % of void space displaced by slurry is from 1 to
25% of effective void space (the void space displaced by slurry is to be to be determined by field tests)
7. Select % of BOC+ in slurry = 45% 8. Mass of
BOC+ in volume of 753.98 cu. ft. of contaminated soil is =
629.79 lbs of BOC+ (113.36 lbs of
> 622 lbs required from Vadose Zone Calculator. Therefore 8' on
centers spacing of injections OK.