Alternate Remedial Environmental Methods and Techniques
The Al Here at The Entech Group, Inc., our staff of environmental professionals has sought out the mosttechnologically advanced remediation process available in the market today. It is our goal tohelp your remediation project advance quickly with minimal cost. By eliminating the need fortraditional soil and/or groundwater remediation via excavation, these high poweredbiotechnologies eradicate even the hardest to reach contamination plumes. These -place) solutions have been proven to substantially reduce the cost of difficult remediationprojects as well as reduce the risk of structural damage to residential and commercial structureswhere contamination has flowed under such structures. The following photos demonstrate thetraditional underpinning process and the structural damage it can cause.The Entech Group, Inc. * 400 Morris Ave. Denville, NJ 07834 * Ph: 800-571-8661 * Fax: 973-586-8663 * www.entechgroupinc.com
The above images show the capability to inject within the dwelling floor as well as below thedwelling via angled direct push borings.The Entech Group, Inc. has overseen successful in-situ remediation projects and continues tostay on the cutting edge of the newest and most effective alternate remediation methods. Thefollowing products can all be injected into the subsurface via direct push apparatus and eachhave a specific contaminant that they target (petroleum products, chlorinated solvents, metals,etc.).*Nano-iron is a reagent that is typically used to remediate subsurface environmentalcontaminants on an in situ basis. Nano-iron is a water suspension of extremely small elementaliron particles. Thus, nano-iron is essentially a natural formulation, which is composed almosttotally of iron - the most common metal on earth.
The nano-iron is injected into the contaminated source or groundwater plume areas via gravity orunder pressure. It remains suspended in the groundwater for long periods, and travels with thegroundwater to destroy contaminants such as chlorinated hydrocarbons, nitroaromatics,pesticides and certain toxic metal ions, such as hexavalent chromium.*Oxygen Release Compound (O R C®) is a formulation of phosphate-intercalated magnesiumperoxide that when hydrated, produces a controlled release of oxygen for periods of up to 12months on a single application.Purpose: To supply a controlled release of oxygen to accelerate the slow rate of naturallyoccurring aerobic contaminant biodegradation in groundwater and saturated soils.F unctionality: ORC is typically applied using direct-injection techniques. This process requiresORC to be mixed with water to form an injectable slurry which is then pressure injected (using apump), into the zone of contamination. Once in the aquifer, tiny ORC particles can sorb to orreside in the soil matrix and produce a controlled release of oxygen for periods of up to 1 year.ORC is also available in 2", 4" and 6" filter socks that can be emplaced in wells and removedwhen exhausted. Upon removal, the old socks can be replaced to restore the oxygen supply andmaintain aerobic biodegradation as needed.*Hydrogen Released Compound (H RC) is a controlled release, electron donor material, thatwhen hydrated is specifically designed to produce a controlled release of lactic acid. The newlyavailable lactic acid is critical for the production of hydrogen to fuel anaerobic biodegradationprocesses in soil and groundwater.Purpose: To make available time release lactic acid for fermentation by subsurface microbesthat in turn generates hydrogen. Hydrogen is the key ingredient in the anaerobic contaminantdegrading process known as reductive dechlorination. Reductive dechlorination is themechanism by which chlorinated compounds are biodegraded into less harmful constituents suchas ethene and ethane.
F unctionality: HRC is typically applied using direct-injection techniques. This process enablesthe viscous HRC material to be pressure injected into the zone of contamination and moved outinto the aquifer media. Once in the subsurface, HRC can reside within the soil matrix fuelingreductive dechlorination and promoting reducing aquifer conditions for periods of up to 24months or longer through the controlled release of lactic acid and subsequent hydrogenproduction.*RegenOx is an advanced chemical oxidation technology that destroys contaminants throughpowerful, yet controlled chemical reactions and not through biological means. This productmaximizes in situ performance while using a solid alkaline oxidant that employs a sodiumpercarbonate complex with a multi-part catalytic formula. RegenOx directly oxidizescontaminants while its unique catalytic component generates a range of highly oxidizing freeradicals that rapidly and effectively destroy a range of target contaminants.Purpose: To rapidly and effectively destroy target contaminants in high concentration sourceareas in the saturated and vadose zones. Also to allow for a seamless transition to enhancedbioremediation.F unctionality: A RegenOx application will remove significant amounts of contamination fromthe subsurface and is typically applied using direct-injection techniques. The application processenables the two part product to be combined, and then pressure injected into the zone ofcontamination and moved out into the aquifer media. Once in the subsurface, RegenOx producesa cascade of efficient oxidation reactions via a number of mechanisms including: surfacemediated oxidation, direct oxidation and free radical oxidation. These reactions destroy a rangeof contaminants and can be propagated in the presence of RegenOx for periods of up to 30 dayson a single injection. RegenOx produces minimal heat and is highly compatible with follow-onenhanced bioremediation applications.*Bio-Dechlor I N O C U L U M ® is an enriched natural microbial consortium containing species ofDehalococcoides sp. (DHC). This microbial consortium has since been enriched to increase itsability to rapidly dechlorinate contaminants during in situ bioremediation processes. Bio-DechlorINOCULUM has been shown to stimulate the rapid and complete dechlorination of compoundssuch as tetrachloroethene (PCE), trichloroethene (TCE), dichloroethene (DCE), and vinylchloride (VC). The most current culture of Bio Dechlor INOCULUM PLUS(+) now contains
microbes capable of dehalogenating halomethanes (e.g. carbon tetrachloride and chloroform) andhaloethanes (e.g. 1,1,1 TCA and 1,1, DCA) as well as mixtures of these halogenatedcontaminants.Bio-Dechlor I N O C U L U M® PL US(+) is provided in a liquid form and is designed to beinjected directly into the contaminated subsurface. Once in place, this microbial consortiumworks to accelerate the extant rate of chlorinated ethene degradation. When faced with aninsufficient quantity of critical dechlorinating microbes, Bio-Dechlor INOCULUM PLUS(+)supplies many beneficial chlorinated solvent degraders including the all important DHC requiredto achieve complete and rapid dechlorination.This microbial consortium is compatible with most electron donors however it is often optimizedwith the addition of any of Regenesis Hydrogen Release Compound (HRC®) products*Metals Remediation Compound M R C is supplied as a viscous liquid for direct injection intocontaminated and saturated soils. The material itself is very much like HRC. This product iscomprised of a polylactate polymer and a benign organosulfur compound, (BOC) allowing for acontrolled release of its active components for long-term. hexavalent chromium (Cr VI) andchlorinated solvent removal. For Cr VI remediation with MRC, Cr VI is directly precipitated as ahydroxide. The hydroxide solids tend to be stable under low redox potential and oxidizingconditions.MRC also has the ability to foster the direct reduction of metals like chromium- these metalswill precipitate as hydroxides and oxides upon the reduction of their oxidized forms. Since MRCcontains a polylactate polymer, reductive dechlorination can be enhanced by the availableelectron donor and carbon source.T reatable MetalsHexavalent Chromium.
*Nano-O x® (nano-scale peroxide)No excavation or structural underpinning needed. Advantages of using Nano-Ox® for soil andgroundwater contaminated with any petroleum hydrocarbons. Injection is performed through 1to 1.25 inch holes in soil or paving. Soil and paving resealed at the end of the day with almostno disruption of lawns. The number of points installed is 5-20 injection points per daydepending on the soil conditions, access, and depth of treatment needed. There is no limit to thedepth that is treatable as long as a monitoring well or injection point can be installed to the depth.Process will continue bioremediation for up to 6 months if necessary. Petroleum odorseliminated within minutes of injection or application.*Nano-iron is a registered TM of Lehigh Nanotech*MRC is a registered TM of Regenesis*Bio-Dechlor is a registered TM of Regenesis*Regen is a registered TM of Regenesis*HRC is a registered TM of Regenesis*OCR is a registered TM of Regenesis*Nano-Ox is a registered TM of Continental RemediationThe Entech Group, Inc. * 400 Morris Ave. Denville, NJ 07834 * Ph: 800-571-8661 * Fax: 973-586-8663 * www.entechgroupinc.com