CA2258474A1

CA2258474A1 - Geo-chemical solvent remedial composition and its preparation

Info

Publication number: CA2258474A1
Application number: CA 2258474
Authority: CA
Inventors: James Damianoff
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-23
Filing date: 1998-12-23
Publication date: 2000-06-23

Abstract

Geo-chemical solvent remedial compositions are disclosed which comprise a blend of a monterpene, a caustic material, a glycol ether, a non-ionic surfactant, an anionic surfactant, a chelant and water.

Description

TTTLE:
Geo-Chemical Solvent Remedial Composition and its Preparation BACKGROUND OF THE INVENTION:
According to Environment Canada, ground water is of vital importance to Canadians as approximately 6.2 million people, or 26 percent of the population of Canada, rely on ground water for their domestic water supply, and approximately 38 per cent of all municipalities rely either entirely or partially on ground water, and approximately 87 percent of water used by livestock comes from ground water.
During the period from 1950 to1970, underground metal tanks (UST's) were installed for petroleum product storage with only minimal consideration for the potential of rust or corrosion. Accurate records were not kept of installation locations nor were tanks monitored for damage, leaks, or filling problems. In the 1980's the dangers of this became evident when contamination of above and below ground water systems became apparent.
Many compounds that make up petroleum products are extremely hazardous to the health of humans and animals even when present in drinking water at low levels. The other problem which arises from leaking petroleum hydrocarbons is the fire hazard which develops when these petroleum hydrocarbon fumes enter sewers or basements.
These petroleum hydrocarbon contaminants are often referred to as non aqueous phase liquids, (NAPLs) by the environmental community, as they exist in the subsurface in a separate liquid phase. NAPLs that are heavier than water are referred to as dense non-aqueous phase liquids (DNAPLs). Examples of such liquids include chlorinated solvents, creosotes, and coal tars. DNAPLs have the potential to migrate to great depths below the water table, as they are denser than water. NAPLs that are lighter than water are referred to as light non-aqueous phase liquids (LNAPLs). Examples of LNAPLs are gasoline, jet fuels and heating oils. LNAPLs tend to accumulate above and slightly below the water table.
Leakage of NAPL's from these UST's contaminates rock, fractured rock, soil stratification, supporting concrete bases and containment walls, adjacent building walls and footings with physical and chemical bonds that make them difficult to remove.
NAPL will also distribute itself in the subsurface as both disconnected blobs and ganglia of liquid, referred to as residual and a larger accumulation referred to as pools.

Remediation of these leakage's, has been the interest of the environmental community.
These remediation efforts have primarily focused on mechanical and physical removal of contaminants, contaminated soils, rocks and backfill materials to approved landfill sites.
More recently, interest has shifted to in-situ procedures to remediate these sites and avoid groundwater contamination.
It would be both desirable and advantageous to have an effective chemical preparation that could remove large amounts of NAPL in a relatively short period of time.
It would also be desirable and advantageous to have a chemical preparation that could remove both LNAPLs and DNAPLs found as residual pools, both in the soil and as contamination on rocks and concrete. It would also be additionally desirable and advantageous to have a chemical preparation that could be mixed with water on site. It would again be desirable and advantageous to have a chemical preparation based primarily upon a solvent that is naturally occurnng in nature.
SPECIFICATION:
This invention relates to the effective geo-chemical solvent remedial composition, and method of its manufacture.
It is another objective of this invention to provide an in-situ geo-chemical solvent remedial composition, that can effectively decontaminated a large volume of soil, a large area of land or a large volume of water that contains both LNAPLs and DNAPLs.
It is also another objective of this invention to provide a geo-chemical solvent remediation composition that can reduce the high cost of soil and water removal and excavation, by being used in-situ.
It is an additional objective of this invention to provide a geo-chemical solvent remedial composition that is based primarily upon a naturally occurnng solvent.
It is yet another objective of this invention to provide a geo-chemical solvent remedial composition that can be mixed with water.
It is a further object of the present invention to provide a method for preparing a geo-chemical solvent remedial composition containing the steps of Adding with agitation, from about 30.00 % to 60.00 % volume of d-limonene and tall oil fatty acid at from about 10.00 % to 20.00 % volume, to create a substantially homogeneous resultant mixture. Then with agitation the addition from about 5.00 % to 25.00 % volume of potassium hydroxide to the first resultant mixture to obtain a second substantially homogeneous resultant mixture. Subsequently, still with agitation, an addition from about 10.00 % to 25.00 % volume of tripropylene glycol methyl ether, and from about 0.50 % to 5.00 % volume of an ethoxylated alcohol surfactant, and an addition from about 1.00 % to 5.00 % volume of dodecylbenzene sulfonic acid to the second homogeneous mixture to create a third homogeneous mixture.
And in a second batch tank, create a separate homogeneous mixture to be added to the third homogeneous mixture to create a final finished homogeneous mixture by adding to the second batch tank under agitation from about 5.0 to 15.0 volume % of water, and then adding to the water in the second batch tank, from about 0.10 % to 5.00 %
volume ethylene diamine tetraacetic acid-sodium, to produce a substantially homogeneous resultant mixture in the second batch tank, and thereby adding this resultant homogeneous mixture to the third homogeneous mixture in the first batch tank, under agitation to yield a final substantially homogeneous said geo-chemical solvent remedial composition.
Water forms the remainder of the geo-chemical solvent remedial composition of this invention. It can be present from about 10 to about 95% volume, based on the total weight of the final geo-chemical solvent remedial composition. Preferably it should be present from about 5.0 to 15.0 volume %. Most preferably, it should be present in an amount of about 7.47 volume %.
Previous methods of in-situ treatments for petroleum hydrocarbons included hydrogen peroxide, aqueous solutions of micro-organisms, alcohols, toxic solvents or non-ionic surfactants. Peroxide treatments would oxidize these hydrocarbons but provide no solubility, were dangerous to handle and difficult to control reaction rates.
Micro-organisms, also known as bio-remediation, are a slow process of metabolism of petroleum hydrocarbons to carbon dioxide and water. Shortcomings in bio-remediation treatments are control of soils pHs, lack of year round moderate temperatures, other toxic soil contaminants and availability of specific nutrients. Alcohols, such as isopropyl or methyl alcohol used as in-situ treatments as solubiiizing agents are highly flammable, dangerous to handle and can be toxic to indigenous micro-organisms. Toxic solvents such as toluene, used as solubilizing agents are extremely toxic, highly flammable, dangerous to handle and can often worsen existing contaminant profiles, by adding unwanted toxins if the procedures are not finely controlled. Non-ionic surfactants by alone lack solubilities for wide ranges of petroleum hydrocarbons and require large pore volumes of water to stimulate a pump and treat technology.
The inventive idea in this geo-chemical solvent remedial composition is using a naturally occurring hydrocarbon solvent in conjunction with a supporting, low toxicity co-solvent, a glycol ether, together with a non-ionic surfactant and an anionic surfactant to solubilize the NAPLs that have leaked into the soils and reside as residuals of, or adhered to rocks and concrete, and to furthermore be emulsified by low quantities of pore volumes of water, by the added and enhanced functional characteristics of the blended non-ionic and anionic surfactants of this composition. It is also the inventive idea of this composition to be able to water dilute on site with either hard or soft water. This invention precludes the use of toxic solvents or flammable materials and does not require physical or mechanical removal of contaminated soils, rocks or concrete.

DETAILED DISCUSSION:
Broadly, the geo-chemical solvent remedial composition of this invention contains from about 10.00 to about 80.0 % volume of a monoterpene, from about a 0.10 % to about a 30.0 % volume of a fatty acid, from about 0.50% to about 40.00% volume of a caustic material, from about 0.10 to about 40.0 % volume of a glycol ether, from about 0.10 to about 40.0 % volume of an non-ionic surfactant, from about a 0.10% to a 20.0 volume of an anionic surfactant, from 0.01 % to 10.0 % of a chelant, and the remainder water.
D-iimonene is one of a naturally occurring class of chemicals, called monoterpenes, a sub-class of the terpene family of chemicals, found in high concentrations in citrus fruits.
Because of its pleasant citrus fragrance, it is widely used as a flavor and fragrance additive in perfumes, soaps, foods, chewing gum and beverages. Also, because d-limonene is a relatively safe and highly effective organic solvent, it is finding increasing use in household and industrial cleaning products, replacing dangerous petroleum-based solvents and environmentally hazardous hydrocarbon solvents. Another application of d-limonene has been as an odorant in sewage treatment plants. Additionally, the manufacture of d-limonene is ecologically sound since discarded citrus pulp and peels from the citrus juice industry are used as the source material for this chemical.
It is well established that d-limonene, in man and in other species of mammals, is rapidly broken down by the liver. Considering its natural origin, it is generally believed that d-limonene and related products are readily degraded. Indirect evidence for this belief can be found in publications by several investigators who have demonstrated the ability of certain types of bacteria, called Pseudomonads, to totally degrade d-limonene-like compounds. Other types of bacteria, such as Enterobacteria are capable of transforming d-limonene into other by-products, such as dihydroperillic acid and perillic acid.
D-Iimonene is easily degraded by microorganisms found in forest soil, and Bacillus stearothermophilus can grow on and degrades d-Iimonene.
When used in or on food, d-limonene is regulated by the United States, Food and Drug Administration (FDA) Title 2I of the Code of Federal Regulations lists d-limonene (and its variant forms 1-limonene, and dl-limonene) as a Generally Recognized as Safe (GRAS) food additive.
The USEPA regulates the use of limonene when used in cleaning agents and pesticides.
Aside from regulatory requirements regarding product registration, research into other applicable regulations revealed that d-iimonene is not specifically listed as a regulated waste by the Resource Conservation and Recovery Act (RCRA), Title III of the Superfund Authorization and Reclamation Amendments (SARA), or the Clean Air Act Amendments of 1990 (CAAA). In addition, neither the National Institute of Occupational Safety and Health (NIOSH) nor the American Conference of Governmental Industrial Hygienists (ACGIH) have developed "Permissible Exposure Limits" (PELs) for this material.

From these above human safe and ecologically sound perspectives, one can see that d-limonene is a viable alternative to dangerous petroleum based solvents.
For this invention, the first ingredient used is d-limonene from the monterpene family.
This is a commercially available compound from industrial and commercial chemical vendors. D-limonene has a flash point of approximately 115 degrees F., categorizing it as a combustible liquid not flammable, a specific gravity of approximately 0.84, and is characterized by a CAS no. of 5989-27-5, and is insoluble in water. D-limonene in this invention is present at a level from about 0.10 % to 80.00 % volume, based upon the total volume of the final geo-chemical solvent remedial composition.
Preferably, the ingredient should be present at a volume from about 30.00 % to 60.00 % volume.
Most preferably this ingredient should be present about 48.31 % volume.
The next ingredient used in this invention is a fatty acid - rosin acid composition. A fatty acid is a carboxylic acid derived from, or contained in an animal or vegetable fat or oil, and containing a chain of alkyl groups, and characterized by a terminal carboxyl group.
Fatty acids may be either saturated or unsaturated.
For this invention, the most preferred fatty acid is an unsaturated fatty acid known as tall oil fatty acid. Tall oil fatty acid is derived from the spent black liquor of the pulping process. Tall oil fatty acid is used in alkyd resins, soaps, cutting oils, oil-well drilling muds, core oils, lubricants and greases and as emulsifiers. Tall oil fatty acid is characterized with an average composition of 60 - 80% fatty acids and 4.0-60%
rosin acids, although compositions and properties may vary from batch to batch. Tall oil fatty acid is of low order toxicity. It has a flash point of approximately 360 degrees F. and is characterized by a CAS no. of 61790-12-3, and is soluble in water. This is a commercially available compound from industrial and commercial chemical vendors.
The tall oil fatty acid in this invention is present at a level from about 0.10 % to 30.00 volume, based upon the total volume of the fnal geo-chemical solvent remedial composition. Preferably, the ingredient should be present at a volume from about 10.00 to 20.00 % volume. Most preferably about 14.23 % volume of this ingredient should be used.
The next ingredient used is a caustic material. A caustic can be a strongly liquid alkaline or powdered alkaline material. Far this invention, the most preferred caustic material is potassium hydroxide. Potassium hydroxide is used in soap manufacturing, dyestuffs, bleaching, as an electrolyte in batteries, food additives and as a fertilizer.
It has a specific gravity of 1.45, comes typically as a 50% liquid solution and is characterized by a CAS
no. 1310-58-3, and is soluble in water. This is a commercially available compound from industrial and commercial chemical vendors. The caustic potash used in this invention is present as a 50% solution at a level from about 0.05 % to 40.00 % volume of the final geo-chemical solvent remedial composition. Preferably the ingredient should be present at a volume from about 5.00 % to 25.00 % volume. Most preferably about 7.95 %
volume of this ingredient should be used.

The next ingredient used in this invention is a co-solvent. For this invention the preferred co-solvent is a glycol ether. For this invention, the most preferred glycol ether is tripropylene glycol methyl ether. Tripropylene glycol methyl ether is also known as Propanol (2(2-Methoxymethylethoxy)methylethoxy). Tripropylene glycol methyl ether is of low order of toxicity and is known as a solvent, co-solvent, coupling agent, co-emulsifier, and pour point depressant. This is a commercially available compound from industrial chemical vendors. Tripropylene glycol methyl ether, has the typical characteristics of; a reference CAS Number of 25498-49-1; has a specific gravity (H(2)O=1 ) of 0.97 at 20 degrees Celsius; has a flash point of approximately 240 F., and is soluble in water. Tripropylene glycol methyl ether in this invention is present at a level from about 0.10 % to 40.0 % volume, based upon the total volume of the final geo-solvent remedial composition. Preferably, the ingredient should be present at a volume from about 10.00 % to 25.00 % volume. Most preferably about 14.72 % volume of this ingredient should be used.
The next two ingredients in this invention are surfactants. Surfactants are organic compounds consisting of two parts: ( 1 ) A hydrophilic portion, usually including a long chain hydrocarbon; and (2) a hydrophilic portion which renders the compound sufficiently soluble in water or other polar solvents. This combination of the two parts, hydrophilic and hydrophobic portions in a surfactant render the surfactant surface-active and thus able to concentrate at the interface between a substrate to be cleansed.
Surfactants are additionally categorized as anionic, cationic or non-ionic. An anionic surfactant' hydrophilic molecule portion contains a negative charge. A
cationic surfactant's hydrophilic portion contains a positive charge. A non-ionic surfactant does not dissociate but derive their hydrophilic portions from polyhydroxy or polyethoxy structures. Additional categorization of surfactants is amphoteric and zwitterionic. These are less common than the anionic, cationic and non-ionic surfactants.
The next ingredient used in this invention is a non-ionic surfactant. For this invention this preferred non-ionic surfactant is an ethoxylated alcohol surfactant.
Ethoxylated alcohol surfactants are highly biodegradable, are used emulsifiers, foaming agents and cleaners, and have found recent use in industrial applications such as textile processing, pulp and paper processing, agricultural sprays and circuit board cleaners.
For this invention, the most preferred non-ionic surfactant is a high range -high mole ethoxylated alcohol surfactant based on a C(10)-C(12) linear alcohol feedstock, with 5.6 moles of ethylene oxide. This C( 10)-C( 12) linear alcohol exthloxylate surfactant with 5.6 moles of ethylene oxide is a commercially available compound from chemical vendors.
The ethoxylated alcohol surfactant has the typical characteristics of;
specific gravity (H(2)O=1) of 0.972 at 25 degrees centigrade; a cloud point of 99 degrees F at 1.0 % in water; a pH of 7.0 in a I .0 aqueous solution, an HLB of 12, an average molecular weight of 410; and a pour point of 39 degrees F. It is characterized by a CAS no. of 0, is of low order of toxicity and is soluble in water. The ethoxylated alcohol surfactant in this invention is present at a level from about 0.10 °to to 20.0 %
volume, based upon the total volume of the final pollution remedial composition. Preferably, the ingredient should be present at a volume from about 0.50 % to 5.00 % volume. Most preferably about 2.45 % volume of this ingredient should be used.
The next ingredient used in this invention is an anionic surfactant. Anionic surfactants have shown some potential to be resistant to sorption in sandy and clay soils, while also showing good solubilization of NAPLs. For this invention, the most preferred anionic surfactant is alkylaryl sulfonic acid, otherwise commonly known as dodecylbenzene sulfonic acid. This is also referred to as a linear alkyl benzene sulfonate.
This is a commercially available compound from industrial chemical vendors. The dodecylbenzene sulfonic acid in this invention has the typical characteristics; sulfonic acid weight % at 95.0 - 97.0; a specific gravity (H(2)O=1) of 104 - 106 at 25 degrees centigrade; a flash point of greater than 93 degree centigrade; open cup; and is categorized with a CAS Number of 27176-87-0, is of low order of toxicity and is soluble in water.. The dodecylbenzene suifonic acid in this invention is present at a level from about 0.10 % to 20.0 % volume, based upon the total volume of the final geo-solvent remedial composition. Preferably, the ingredient should be present at a volume from about 1.00 % to 5.00 % volume. Most preferably about 4.67 % volume of this ingredient should be used.
The next ingredient used in this invention is a chelant. A chelant or chelating agent is an organic chemical compound used in formulations to assist the formulated compound to withstand precipitating effects of commonly present precipitating and scaling agents.
Common precipitating and scaling agents are, among others, alkaline earth metals such as calcium and magnesium, divalent metals such as copper, and amphoteric metals such as aluminum. The removal of undesirable metal ions is often difficult and it is usually easier to inactivate them with a chelating agent. Undesirable metal ions may be found present in water used for formulating or field andlor commercial dilution purposes of the final chemical composition. Amino acid chelating agents are known to be stable in acid or alkaline solutions and at elevated temperatures. Amino acid chelating agents securely bind metal ions to form stable complexes, which remain very soluble in this form. They are also quite resistant to the action of oxidizing or reducing agents and exhibit low toxicity.
For this invention, the most preferred chelant is the sodium salt of ethylenediamine tetraacetic acid. This is a commercially available compound from chemical vendors. The sodium salt of ethylenediaminetetraacetic acid in this invention is present at a level from about 0.10 % to 10.0 % volume, based upon the total volume of the final pollution remedial composition. Preferably, the ingredient should be present at a volume from about 0.10 % to 5.00 % volume. Most preferably about 0.20 % volume of this ingredient should be used.

Water forms the remainder of the geo-chemical solvent remedial composition of this invention. It can be present from about 10 to about 95% volume, based on the total weight of the final geo-chemical solvent remedial composition. Preferably it should be present from about 5.0 to 15.0 volume %. Most preferably, it should be present in an amount of about 7.47 volume %.
METHOD OF MANUFACTURE_ The surfactant remediation composition of this invention was made by adding the first ingredient, d-limonene, about 48.31 % volume of the total volume of the final geo-chemical solvent remedial composition. Then with agitation, about 14.23 %
volume of tall oil fatty acid was added to obtain a first substantially homogeneous resultant mixture.
Then with agitation about 7.95 % volume of potassium hydroxide was added to the first resultant mixture to create a second substantially homogeneous resultant mixture.
Subsequently, still with agitation, about 14.72 % volume of tripropylene glycol methyl ether, about 2.45 % volume of the non-ionic ethoxylated alcohol surfactant, and about 4.67 % volume of dodecybenzene sulfonic acid, was added to the second homogeneous mixture to create a third homogeneous mixture.
In a second batch tank, about 0.20 % volume of the chelant, namely ethylene diamine tetraacetic acid-sodium salt was added under separate agitation to the portion of water being about 7.47 % volume of the total volume of the resultant geo-chemical solvent remedial composition, at a cold water temperature of 10 degree C., to produce a substantially homogeneous resultant chelant-water mixture. This separate chelant-water resultant mixture was then added, under agitation to the third resultant homogeneous mixture and agitated for 30 minutes to create the final resultant homogeneous geo-chemical solvent remedial composition.

COMPOSITION
The following composition is representative of this innovation.
Component D-limonene 48.31 (% by volume) Tall oil fatty acid 14.23 (% by volume) Potassium hydroxide (50% solution) 7.95 (% by volume) Tripropylene glycol methyl ether 14.72 (% by volume) Ethoxylated alcohol surfactant 2.45 (% by volume) Alkylaryl sulfonic acid 4.67 (% by volume) Ethylenediamine tetraacetic acid 0.20 (% by volume) (sodium salt) Water 7.47 (% by volume This geo-chemical solvent remedial composition is stable. It can be diluted in water to form a milky emulsion. It effectively solubilizes and emulsifies hydrocarbon contaminants from soil samples and from hard concrete and rock surfaces.
INDUSTRIAL APPLICABILITY

Generally, the geo-chemical solvent remedial composition of the present invention can be used to remedy an area of ground contaminated with NAPLs as follows:
Administering through one or more perforated pipes that have been injected into the ground, the geo-chemical solvent remedial composition of this invention can be slowly introduced into the perforated pipes to allow the composition to slowly penetrate into the contaminated soil. Several pore volumes of water are then added to the perforated pipes to follow behind the geo-chemical remedial solvent composition. Through one or more injected perforated pipes at an extraction location downflow from the contaminated zone, the resultant solubilized NAPLs with the geo-chemical solvent remedial composition of this invention and the pore volumes of water can be extracted through a suction pump mechanism or a submersible pump system.

Generally, the geo-chemical solvent remedial composition of the present invention can be used to remedy an area of ground contaminated with NAPLs as follows: The geo-chemical solvent remedial composition of this invention can be diluted from one part geo-chemical solvent remedial composition to one part water up to 1 one part geo-chemical remedial solvent composition to twenty parts water to make a milky solution.
This resultant solution of water and geo-chemical solvent remedial composition can be administering through one or more perforated pipes that have been injected into the ground, the geo-chemical solvent remedial composition of this invention can be slowly introduced into the perforated pipes to allow the composition to slowly penetrate into the contaminated soil. Through one or more injected perforated pipes at an extraction location downflow from the contaminated zone, the resultant solubilized NAPLs with the geo-chemical solvent remedial composition of this invention -water solution can be extracted through a suction pump mechanism or a submersible pump system.

For areas with exposed rocks or concrete that have been contaminated with NAPLs, the geo-chemical solvent remedial composition of this invention can be sprayed on or can be brushed on or mopped on directly onto the surface of the contaminated exposed area, and allowed to solubilize the contaminant NAPLs. The solubilized contaminant NAPLs in the geo-chemical solvent remedial composition may then be hosed off with water, forming a milky emulsion. Collection of this milky emulsion elutriate may be achieved by containing the surrounding areas with impermeable plastic tarps or groundsheets, then retrieving the solution with pumps or wet vacuum mechanisms.
The invention now being fully described, it will be apparent to one of ordinary skill in the art that many changes and modifications can be made thereto without departing from the spirit or scope of the invention as defined in the following claims.
5~

Claims

1. A geo-chemical solvent remedial composition comprising from about 10.00 %
to 80.00 % volume of a monoterpene, from about a 0.10 % to about a 30.00 % volume of a fatty acid, from about 0.50 % to about a 40.00 % volume of a caustic material, from about 0.10 to about 40.00 % volume of a glycol ether, from about 0.10 % to about 40.00 % volume of an non-ionic surfactant, from about a 0.10% to a 20.00 % volume of an anionic surfactant, from about 0.01 % to 10.00 % volume of a chelant, and the remainder water.

2. The geo-chemical solvent remedial composition of claim 1 wherein said monterpene is d-limonene.

3. The geo-chemical solvent remedial composition of claim 1 wherein said fatty acid is tall oil fatty acid.

4. The geo-chemical solvent remedial composition of claim 1 wherein said caustic material is a liquid potassium hydroxide 50% solution.
The geo-chemical solvent remedial composition of claim 1 wherein said glycol ether is tripropylene glycol methyl ether.
6 The geo-chemical solvent remedial composition of claim 1 wherein said non-ionic surfactant is a C(10)-C(12) linear ethoxylated alcohol surfactant with 5.6 moles of ethylene oxide.
7 The geo-chemical solvent remedial composition of claim 1 wherein said anionic surfactant is dodecylbenzene sulfonic acid.
8 The geo-chemical solvent remedial composition of claim 1 wherein said chelant is ethylene diamine tetraacetic acid-sodium salt.
9 A geo-chemical solvent remedial composition comprising from about a 30.00 %
to about a 60.00 % volume of d-limonene, from about a 10.00 % to about a 20.00 %
volume of tall oil fatty acid, from about a 5.00 % to about a 25.00 % volume of potassium hydroxide 50% aqueous solution, from about a 10.00 % to about a 25.00 %
volume of tripropylene glycol methyl ether, from about a 0.50 % to about a

5.00 %
volume of C(10-C(12) linear alcohol ethoxylate surfactant with 5.6 moles of ethylene oxide, from about a 1.00 % to about a 5.00 % volume of dodecyl benzene sulfonic acid, from about a 0.10% to about a 5.00 % volume of ethylene diamine tetraacetic acid-sodium salt and the remainder water.
The geo-chemical solvent remedial composition of claim 9 wherein said d-limonene is about 48.31 % volume of the final resultant product.
11 The geo-chemical solvent remedial composition of claim 9 wherein said tall oil fatty acid is about 14.23 % volume of the final resultant product.
12 The geo-chemical solvent remedial composition of claim 9 wherein said potassium hydroxide 50% aqueous solution is about 7.95 % volume of the final resultant product.
13 The geo-chemical solvent remedial composition of claim 9 wherein said tripropylene glycol methyl ether is about 14.72 % volume of the final resultant product.

14 The geo-chemical solvent remedial composition of claim 9 wherein said C(10-C(12) linear alcohol ethoxylate surfactant with 5.6moles ethylene oxide is about 2.45 %
volume of the final resultant product.
15 The geo-chemical solvent remedial composition of claim 9 wherein said dodecyl benzene sulfonic acid is about 4.67 % volume of the final resultant product.
16 The geo-chemical solvent remedial composition of claim 9 wherein said ethylene diamine tetraacetic acid-sodium salt is about 0.20 % volume of the final resultant product.
17 A geo-chemical solvent remedial composition comprising about 48.31 % volume of d-limonene, about 14.23 % volume of tall oil fatty acid, about 7.95 % volume of potassium hydroxide 50% aqueous solution, about 14.72 % volume of tripropylene glycol methyl ether, about 2.45 % volume of C(10)-C(12) linear alcohol ethoxylate surfactant with 5.6 moles of ethylene oxide, about 4.67 % volume of dodecyl benzene sulfonic acid, about 0.20 % volume of ethylene diamine tetraacetic acid-sodium salt and the remainder water.
18 The method for preparing a geo-chemical solvent remedial composition comprising the steps of: adding under agitation from about a 30.00 % to about a 60.00 %
volume of d-limonene, then adding with agitation from about a 10.00 % to about a 20.00 % volume of tall oil fatty acid to obtain a substantially homogeneous resultant mixture; then with agitation, adding from about a 5.00 % to about a 25.00 %
volume of potassium hydroxide 50% aqueous solution to create a substantially homogeneous resultant second mixture; subsequently still with agitation adding about a 10.00 % to about a 25.00 % volume of tripropylene glycol methyl ether and adding about 0.50 %
to about a 5.00 % volume of C(10-C(12)linear alcohol ethoxylated surfactant with 5.6 moles of ethylene oxide, and adding about a 1.00 % to about a 5.00 % volume of dodecyl benzene sulfonic acid to create a substantially homogeneous resultant third mixture; and in a second batch tank under agitation adding about a 5.00 % to about a 15.00 % volume of water at about 10 degrees C., and adding about a 0.10 % to about a 5.00 % volume of ethylene diamine tetraacetic acid-sodium salt to the water to create a substantially homogeneous resultant water-ethylene diamine tetraacetic acid-sodium salt solution; and subsequently adding the water-ethylene diamine tetraacetic acid-sodium salt solution to the third homogeneous resultant mixture to create the final resultant homogeneous geo-chemical solvent remedial composition.