BOC+  MIXING INSTRUCTIONS

Biological Oxygen Compound + Plus™ (BOC+™): 
BOC+ is shipped in 100 lb. fiber drums, and a 5 gallon bucket with a net weight of 27 lbs., containing 4 gallons of liquid macro and micro nutrients, pH adjustment, carbon sources, wetting agents and surfactants.

1. If placing BOC+ in a 5-gallon bucket, its contents would weigh 25 lbs, or 5 lbs per gal.  Add 1- gallon of liquid nutrients for each 25 lbs. of BOC+, into a mixing container with a volume of water required to attain the designed slurry mixture percentage, ratio of water to solids. See slurry calculator to determine amount of water required based upon % of BOC+ in slurry and total space required.  

2. If the mixing container hopper container is of sufficient volume, the entire contents of the 5-gallon bucket of BOC+ and 1 gallon of liquid nutrients may be deposited into the hopper with the water.  If the mixing hopper is of insufficient size or larger, It should be noted: that approximately 5 ounces of liquid nutrients are to be added to each pound of dry material.

3. Add the appropriate quantity of water based upon the desired percentage of solids slurry required for the Lbs. of BOC+ to be mixed.

4. Soil/groundwater testing can make the determination if additional injections are required within the isoconcentration contours of heaviest contamination.

5. Use an appropriate mixing device to thoroughly mix BOC+ and water. A hand drill with a stucco mixer may be used and/or a paddle to scrape the bottoms and sides of the tank may also be used. If other types of mixers are available, they can be used in accordance with manufacturer's instructions. Make sure the mix is adequately mixed so that there are no lumps and has a consistency of creamy butter.

The mix should be used immediately after mixing so that oxygen release is not dissipated. If the BOC+'s mixture is to stand for more than 30 minutes, it should be re-mixed with water so that it maintains its slurry properties. If it is to stand, it can be re-pumped back into the slurry mixer. Normally, slurry mixtures between 35% and 45% solids can be easily injected into the soil/groundwater matrix, and these slurries may be injected directly into the soil vadose zone.

6. The spacing of injection locations should be determined on the areas and depth of contamination. Isoconcentration contours of the plume of contamination should be made so to determine which areas receive the highest concentrations of materials. The injection of materials evenly across the plume may not result in total degradation of chemicals of concern.

7. It is suggested that an injection pilot test be made into the area of highest contamination, and determine the amount of slurry that can be injected at that location. If the slurry is being injected into the saturated zone, it could usually cover an area from 15-25 foot in diameter. If slurry is injected directly into the soil vadose zone, injections could be from 8 feet in diameter to 10 feet in diameter.

8. The injection point from the probe should be slowly raised to inject into full zone of contamination. Slurries in the saturated zone, due to the addition of surfactants contained in the mix, will aid in advection and distribution injections are required throughout the zones of contamination. This distribution will also happen within the vadose zone. Figure 1 is a depiction of colored isoconcentration contours within the soil/groundwater matrix. Testing can make the determination if additional BOC+ is required within the isoconcentration contours of heaviest contamination.