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	TEST RESULTS for LEADX® Laboratory tests of LEADX® used as an abrasive additive for sand blasting of lead paint surfaces were conducted by KTA-TATOR, Inc. for Proactive Environmental Research & Development, Inc. The following are re-typed excerpts from their final report. All emphasis's below is our's and is intended only to highlight information that we feel is most important. You can download the complete report for offline viewing. Which is available in Adobe .pdf format. Netscape users right click on link and choose "save link as". Microsoft Internet Explorer users right click on link and choose "save target as". LEACHABLE LEAD CONTENT (TCLP) At the completion of each abrasive trial, a representative 100 pounds abrasive debris with paint chips was collected from the blast room floor and riffled to ensure a homogenous mixture. Samples were taken from the mixture of blasting debris for testing as hazardous material classification by the EPA Method 1311 "Toxicity Characteristic Leaching Procedure (TCLP)". Briefly, this method involves tumbling a 100-gram sample in glacial acetic acid solution for eighteen hours, filtering, and analyzing the liquid by atomic absorption spectroscopy. The limit of detection for the method is 5.0 ppm. The results of this testing are as follows: Abrasive Amount of LEADX® (% by weight) Leachable Lead (ppm) Silica Sand 0% 70.0 Silica Sand 25% 0.70 Coal Slag 0% 11.0 Coal Slag 15% 1.30 Coal Slag 25% 0.90 IN CONCLUSION, the results of the laboratory investigation revealed LEADX® abrasive additive was effective in reducing leachable lead concentrations of abrasive blast cleaning waste generated during removal of lead containing paint. LEADX® abrasive additive rendered the paint removal debris, generated during this evaluation, below the hazardous threshold according to 40 CFR 261.24 "Toxicity Characteristic." 40 CFR 261.24 requires that abrasive blast cleaning waste containing more than 5.0 parts per million leachable lead when tested in accordance with EPA Method 1311 "Toxicity Characteristic Leaching Procedure (TCLP)" be classified as hazardous (D008). Based upon the testing, performed in this study, non of the analyses resulted in a leachable level above the 5.0-ppm threshold when abrasives were treated with LEADX® prior to use. The long-term effectiveness of LEADX® (or the stability of the waste) was also determined using EPA Method 1320 "Multiple Extraction Procedures (MEP)." This test simulates 100-year stability of leachable lead. The results of the MEP testing were all below the detection limit of 1.0 part per million. The abrasive additive did not adversely affect the performance of four common coating systems. No significant differences in coating adhesion, degree of rusting, or degree of blistering were found between steel panels blast cleaned with the abrasive LEADX® mixtures and the untreated abrasives. The LEADX® abrasive additive however, did not appear to reduce airborn concentrations of lead during abrasive blast cleaning operations. NOTICE: This report represents the opinion of KTA-TATOR, Inc. This report is issued in conformance with generally acceptable industry practice. While every precaution was taken to insure that all information gathered and presented is accurate, complete and technically correct, it is based on the information, data, time, materials, and/or samples afforded. Summary report from a lead abatement project in Amarillo, Texas on the 58th Street Elevated Water Storage Tank for the City of Amarillo; work done by Monoko, Inc. of Tarpon Springs, Florida - January 1998. The test documents dated 5/19/97 are all pre tests done on the water tower. The test for lead is in total lead not leachable lead. The pre test shows for the exterior 1,800, 120,000, and 210,000 total lead (mg/kg). The test documents dated 12/19/97 are all test done after the water tower had been blasted using the additive LEADX® These test results are leachable lead. The debris test show with LEADX® the leachable lead was reduced to 0.12, 0.16, 0.52, and 0.59 (mg/L). The EPA limit for leachable lead is 5.0 (mg/L). Leachable lead testing was not required prior to the start of this project. The overall content of total lead being as high as 210,000 would be sufficient to establish that the leachable lead would likely be greater than 5.0 (mg/L). In Texas, it is required that 4 test, of different samples of debris, be performed, to establish that the lead has been abatement. None can fail. In the water tower debris all four test were well below the EPA standard of 5.0 (mg/L). Note: In another test the long term effectiveness of LEADX® was determined using EPA Method 1320 "Multiple Extraction Procedures (MEP). The MEP test simulates 100-year stability of leachable lead. The results were all below the detection limit of 1.0 part per million. Summary Report from field testing LEADX® by Georgia Tech Research Institute - July 1997 On July 30, 1997, a field test of a sand mixture and LEADX® was conducted at a sandblasting facility in Conyers, Georgia. The test articles were a set of wrought iron gates and archways from the Villa Juanita mansion on West Paces Ferry Road in Atlanta, Georgia. The gates were fabricated in New York sometime around 1924, and had been removed from the property for restoration by sandblasting to strip multiple coats of old paint, followed by priming and painting. Two gates were used in the test. One gate was blasted with sand only and the other gate was basted with sand 85% and a 15% blend of LEADX® (based by weight). Before blasting began an estimate of the concentration of lead in the paint was obtained using a Princeton Gamma Tech XK-3 X-ray fluorescence (XRF) analyzer. The results of the XRF testing are: Gate # 1: 1.16mg/cm Gate #2: 2.8 mg/cm In addition, a sample of paint was scraped from each gate for laboratory analysis. These samples were analyzed for total lead using plasma atomic emission spectroscopy (ICP-AES). The results of this analysis are: Gate # 1: (sand only) Gate # 2: LEADX™/sand mixture 27,300 ppm 24,900 ppm A sample of the debris was collected at the conclusion of each test and was submitted to Law & Company for analysis for leachable lead content. The samples were analyzed using the Toxicity Characteristics Leaching Procedure (TCLP) Method 1311. The results dated 8/13/97 are: Trial # 1: paint and sand residue only 4.7-mg/l or ppm leachable lead Trial # 2: paint, sand and 15% LEADX™ 0.07 mg/l or ppm leachable lead It should be noted that while these test were performed a light drizzle of rain fell during Trial 1 and occasionally increased to a light downpour during Trial 2. Trial #1: Moisture 9.2% Trial #2: Moisture 18.7%       LEADX® TEST - Philip Services SOIL REMEDIATION Heavy Metals Contamination in Soil LEADX® was blended with a contaminated soil sample to determine its effectiveness as a treatment for heavy metals. The soil sample contained a variety of heavy metals in the concentrations shown below. After blending with LEADX® the soil was analyzed using the Toxicity Characteristic Leaching Procedure (TCLP) and analyzed using EPA Method 6010. The LEADX® produced significant reductions in the levels of leachable heavy metals in the sample:   Heavy Metal Before LeadX (ppm) After LeadX (ppm) % Reduction EPA Limit (ppm) Lead 5.040 0.051 99% 5.000 Silver 0.647 <0.011* >98%* 5.000 Beryllium 0.551 0.039 93% Zinc 0.898 0.075 92% Mercury 0.577 0.046 92% 0.200 Cadmium 0.643 0.070 89% 1.000 Chromium 0.804 0.110 86% 5.000 Barium 8.950 2.300 74% 100.000 Nickel 0.812 0.290 64% Selenium 0.102 <0.066* >35%* 1.000 Arsenic 0.475 0.310 35% 5.000 * Below detectable levels. Laboratory tests of LEADX® were conducted by an independent laboratory, Philip Services Corporation of Houston, TX, on a certified soil sample provided by Environmental Resource Associates of Arvada, CO Conclusion: LEADX® significantly reduced levels of leachable heavy metals - Even when multiple heavy metals were present - Even when only trace amounts were present
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