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Oil Gator and Bioremediation

In order to bioremediate one (1) gram of hydrocarbon you require 80 mg of NITROGEN, 8 mg of PHOSPHOROUS and 1 mg of SULPHUR.

OIL GATOR provides 500 mg of NITROGEN, 275 mg of PHOSPHOROUS, and 250 mg of SULPHUR per gram of hydrocarbon absorbed.

Application Protocol

OIL GATOR is a chemically modified cellulosic fiber containing all the necessary ingredients (Nitrogen, Sulfur, and Phosphorous) to enhance biodegradation of hydrocarbons by indigenous bacteria. When activated by the addition of moisture, the indigenous bacteria have ideal conditions within which to reproduce and rapidly utilize the available hydrocarbon as a food source.

The strong wicking action of OIL GATOR acts as a physical emulsifier by actually extracting hydrocarbons from less absorptive material. It encapsulates the fine droplets making the hydrocarbons available to the bacteria as a food source

Application of OIL GATOR is so simple it is difficult to understand how it works. Oil Gator is simply applied by blending the dry absorbent with the contaminated soil as evenly as possible. Once the hydrocarbon comes in contact with OIL GATOR it is completely encapsulated (up to the saturation level) and cannot be extracted by naturally occurring contact with water. Even when wet, OIL GATOR will actually release water to absorb hydrocarbons. This extraordinary characteristic separates OIL GATOR from all other absorbents.

When furnished with ideal growth conditions, bacteria will multiply rapidly. Therefore, small quantities of bacteria will effectively perform the task of bioremediation if conditions are optimum. The most challenging aspect is to properly disperse the bacteria throughout the contaminated soil to achieve a homogeneous mixture. In other bacterial technologies, after the hydrocarbons have been broken down into droplets, containment of the hydrocarbons can still pose a significant problem. This can often lead to leaching of contaminants through the soil into the ground water, possibly contaminating fresh water supplies. This problem is overcome by the use of OIL GATOR.

In remediation, no two situations are identical, which makes it difficult to formulate recipe-type instructions for every application. However, a few standardized steps should be taken which will ensure better than average success. If this procedure is followed, minimum degradation of 40% should be achievable every 30 days. In optimal conditions, we have observed as much as an 80% reduction in 30 days.

1) - The pH of the contaminant should be buffered to a pH level of not less than 4.5 or greater than 9.5 for optimal conditions for bacterial growth.

2) - Excessive levels of some heavy metals, PCP, fungicides, and pesticides will slow bacterial growth.

3) - The effective temperature range for the use of Oil Gator is from 40 F. to 120 F., temperatures outside this range will slow bacterial growth. However, the absorbent will maintain its encapsulation characteristic, preventing leaching, until the bacteria are again active. Oil Gator will not biodegrade itself until all absorbed hydrocarbons have been degraded.

Guideline for Mixing Ratio

1) Determine level of contamination, example: 80,000 TPH.

2) To provide necessary encapsulation and preclude leaching, while providing enough nutrients to achieve maximum degradation with minimum aeration, the amount of Oil Gator to be added is approximately 1/2 the total weight of the hydrocarbons in the matrix. However, the minimum recommended ratio would be of at least one (1) 1.5 cu ft bag per cubic yard, to achieve adequate dispersion of Oil Gator throughout matrix and encapsulation of contaminants

For Example: Soil: 80,000 ppm represents 8% hydrocarbon contamination. One cubic yard of soil weighs approximately 2700 lbs. 8% of 2700 equals 216 lbs., 1/2 of 216 equals 108 lbs. 108 lbs. of Oil Gator per cubic yard, about three (3) 30 lb. bags.

Liquid: Liquids represent the highest form of hydrocarbon contamination, frequently 1,000,000 ppm. The volume of Oil Gator required can be judged by observation: sufficient absorbent to encapsulate the liquid until it is dry to the touch, or has the appearance of soil. However, the formula is also a viable method, when adjusted to compensate for the different weight densities of soil and free liquids. Soil is 4 to 5 times heavier than free liquid per unit volume, so that the prior formula for soils gives insufficient amounts of Oil Gator for free liquids. The formula for free liquids, then is to start at one (1) lb. of Oil Gator per (1) lb. of liquid contaminant, adjusted by the percentage of contamination.

For Example: 10 gallons of 30 wt. motor oil weighs approximately 85 lbs. 700,000 ppm represents 70% hydrocarbon contamination 85 lbs. multiplied by 70% equals 59.5 lbs. of Oil Gator required for encapsulation and remediation. Two (2) 30 lb. bags of Oil Gator required for remediation.

Since liquids represent the highest level of hydrocarbons to be remediated, it may be necessary to add additional product if the rate of degradation levels out prior to completion. This is achieved by the addition of supplemental amounts of OIL GATOR or Oil Gator Stage II followed by thorough tilling for oxygen replenishment.

3) Thoroughly mix or till the soil/liquid with Oil Gator to achieve homogeneous blending and optimum encapsulation. It is advisable in the tilling process to dampen the soil to reduce dusting and promote hydrocarbon migration.

4) Lay out in biocell or open area to provide aeration.

5) Add water to thoroughly saturate the bed, almost to the point of flooding.

6) Maintain a moisture level of 30% throughout the remediation period. Frequent wetting is desirable as it helps migrate the hydrocarbons from the contaminated soil into the Oil Gator where it is encapsulated and eventually degraded.

7) Occasional tilling will accelerate the degradation process by providing additional oxygen for the process.

Monitor soils through TPH testing until target cleanup levels are achieved.

Note: It can be difficult, in the field, to judge hydrocarbon content without frequent testing and time consuming and expensive procedures. With OIL GATOR this can be overcome, as visual observation can often be adequate in assuring proper application. Simply add absorbent to heavily contaminated areas until the soil is dry to the touch or takes on the appearance of normal soil in the area. If the soil still appears tacky in spots, simply add more OIL GATOR.

Also, lesser amounts of Oil Gator could be used with satisfactory results. However, to ensure encapsulation and maximum contact of bacteria with contaminant, a minimum of one (1) bag per cubic yard is recommended.

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