Soilworks products are the industry’s top standard due to our insistence on creating high performance soil stabilization and dust control products that stand up to rigorous testing – both in the lab and in the field. Our commitment to quality and performance has led to our involvement and testing in hundreds of real-world situations. The following library of reports, presentations, specifications, approvals and other similar documents provide you, our customer, the transparency and dependable assurance that is expected from Soilworks.
Independent environmental consulting review was conducted to evaluate Soiltac® for Certification of Environmental Compliance in response to municipal procurement requirements. The evaluation addressed stormwater runoff quality, hazardous waste classification, regulatory compliance under the Toxic Substances Control Act (TSCA), Arizona Administrative Code hazardous waste criteria, and carcinogenic substance listings. Based on review of MSDS documentation, laboratory testing, and stormwater impact modeling, the product was determined to meet environmental compliance benchmarks, including National Pollutant Discharge Elimination System (NPDES) stormwater criteria and hazardous waste characterization standards. The assessment further confirmed that the product and its degradation components do not exhibit ignitability, corrosivity, reactivity, or regulated hazardous substance designation under applicable federal and state environmental regulations.
For municipalities, counties, industrial operators, and infrastructure projects requiring environmentally compliant dust control and soil stabilization solutions, polymer-based technologies offer measurable performance while aligning with regulatory standards. Soiltac, a copolymer emulsion soil stabilizer, delivers long-term particle binding, erosion resistance, and stormwater-friendly soil stabilization for construction sites, unpaved roads, landfills, and disturbed soils. For extended dust suppression on access roads and staging areas without continuous water application, Durasoil provides durable soil conditioning and particulate reduction. Where increased surface strength and resistance to environmental exposure are required, Gorilla-Snot enhances soil cohesion for demanding traffic and climatic conditions. For projects requiring documentation of environmental compliance and regulatory alignment, Soilworks provides technical support and product guidance tailored to site-specific performance and permitting requirements.

Environmental | Geotechnical | Chemical | Materials Testing
2801 South 35th Street, Phoenix, AZ 85034
ph 602.393.4800 info@gecaz.com 602.393.4801 fax
June 19, 2007
681 North Monterey Street, Suite 109
Gilbert, Arizona 85233 Attention: Mr. Kevin Hurst
Subject: Environmental Consulting Services
Certification of Environmental
Compliance County of Mohave, Arizona
Dear Mr. Hurst:
Geotechnical and Environmental Consultants, Inc. (doing business as GEC) has been requested by Soilworks, LLC® to evaluate their product Soiltac® for the Certification of Environmental Compliance as requested by Mohave County in their procurement document “Invitation for Bid No. 07-B-03” in Section 2.2. Soilworks, LLC® provided us with a copy of the Material Safety Data Sheet (MSDS), specifications, and environmental data for Soiltac®, along with laboratory test reports from Aquatic Consulting & Testing, Inc. Based upon our review of these documents, we present the following paragraphs in response to Mohave County’s request.
A storm water impact analysis was performed by Aquatic Consulting & Testing, Inc. (ACT). ACT used a mathematical model to evaluate the ability of contaminants to be leached from Soiltac® based on characterization sampling performed on Soiltac® in 2003. Based upon our review of the information provided and compaison of this information to the Exhibit 4 of EPA’s document “Guidance Manual for the Monitoring and Reporting Requirement of the NPDES Multi-Sector Storm Water General Permit” issued in January 1999, we believe storm water rnoff from Soiltac® treated areas should not contain concentrations exceeding the benchmark values designated.
Based on the information provided to us in the MSDS and the Soiltac® specificati ons, we believe that Soiltac® and its decomposition products would not be a RCRA hazardous waste or a hazardous waste under A.AC. Rl 8-8-261. While test data does indicate the presence of
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acetone in Soiltac®, the acetone is not used as a solvent. It is used for its evaporative properties. Therefore, based on our understanding of State and Federal regulations, the mere presence of acetone is not sufficient to classify this material as a hazardous waste. In addition, based on the MSDS, Soiltac® is not flammable (ignitable), corrosive, or reactive, so Soiltac® and its decomposition products would not display the primary characteristics ofa hazardous waste.
Based on the information provided to us in the MSDS and the Soiltac® specifications, we believe thi s product does not contain components regulated under the Federal Toxic Substance Control Act, and it is not designated as an extremely hazardous chemical by ADEQ or EPA.
Based on GEC’s review of the data provided to us, Soiltac® and its components including acetone and vinyl acetate are not listed as carcinogenic by EPA or ADEQ.
A current MSDS is attached.
Based on the information provided to us and the requirements listed by Mohave County, we believe that Soiltac® meets the environmental compliance requirements ofMohave County.
GEC’s evaluation was based on the information and data provided to us. We assumed that the information and data provided to us was true, accurate, and complete. We did not independently verify the information or data provided to us. GEC did not conduct any laboratory testing on samples ofthis product. GEC performed this review in accordance with typical industry standards for this type of work. The opinions and conclusions provided by GEC are based solely on the information provided to us and documented in this report. Additional information which was not readily available to GEC at the time of this report may result in a modification of the opinions and conclusions presented.
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We appreciate the opportunity to work with you on this project.
Sincerely,
GEC
By: Chet L. Pearson, P.E. And Stacey J. LeBlanc
Copies: Addressee (2)
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