Heavy Metals Cleaning
The Resource Conservation and Recovery Act (RCRA) is a law that regulates safe management of environmentally hazardous and non-hazardous waste in the United States. The U.S. Environmental Protection Agency (EPA) issues guidelines and regulations for the proper handling and disposal of many types of waste in accordance with the Code of Federal Regulations (40 CFR). Resource Conservation and Recovery Act (RCRA) lists the following eight materials as toxic “Heavy Metals that can be commonly found in construction and demolition debris or in contaminated top soil:
|Arsenic (As)||5.0 ppm|
|Barium (Ba)||100.0 ppm|
|Cadmium (Cd)||1.0 ppm|
|Chromium (Cr)||5.0 ppm|
|Lead (Pb)||5.0 ppm|
|Mercury (Hg)||0.2 ppm|
|Selenium (Se)||1.0 ppm|
|Silver (Ag)||5.0 ppm|
For over 20 years, HMCS-101 and HgCS-102 (specific for Mercury) have been used to remove Heavy Metals and Mercury from all types of surfaces.
The products are a proprietary blend of surfactants, terpenes and chelating agents that have been designed to solubilize and trap RCRA Heavy Metals – including Mercury (Hg).
All are water based. No VOCs!!!!
Simply spray or brush onto the contaminated surface, let sit for 20-30 minutes (provide mild agitation if and when possible) and then remove the liquid with a shop vacuum or mop. Let surface thoroughly dry for 24 hours and then resample to determine if any contamination still exists.
For Heavy Metals:
Porous Cement & Concrete or Metal Surfaces - HMCS-101
For Mercury (Hg)
Porous Cement & Concrete or Metal Surfaces - HgCS-102
Packaging: Either 5-gallon pails or 55-gallon steel drums
Case Study for HgCS-102 (April 2002)
The HgCS-102 product reacts with elemental Mercury and Mercury salts to form water insoluble salts and has been laboratory tested and found to render organic & inorganic forms of mercury equally insoluble.
Mercury in Soil
|HgCS Applied||Buck Hg Analysis Results
After Water Extraction
|1 mg/kg metallic||25 ml||None Detected|
|5 mg/kg metallic||25 ml||None Detected|
|10 mg/kg metallic||25 ml||None Detected|
|1 mg/kg soluble Hg salt||25 ml||None Detected|
|5 mg/kg soluble Hg salt||25 ml||None Detected|
|10 mg/kg soluble Hg salt||25 ml||None Detected|
|1 mg/kg each Hg & Hg-salt||25 ml||None Detected|
|5 mg/kg each Hg & Hg-salt||25 ml||None Detected|
|10 mg/kg each Hg & Hg-salt||25 ml||None Detected|
Limit: “None Detected” ( <0.000001 mg/kg soil)
Products of reaction:
- Mercuric salts (water insoluble)
- Sodium carbonate
Based on these results, the Mercury has been effectively rendered insoluble in water. Therefore, the Mercury, by definition when treated with HgCS-102 is no longer a threat to the environment as defined by the US EPA.