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Green America’s staff of chemists and technicians operate a fully equipped state-of-the-art on-site fuels laboratory to ensure employee safety and regulatory compliance.

Before a potential waste stream is approved for shipment, a stringent prequalification analysis is performed to ensure that the material is compatible with the cement-manufacturing process and meets acceptance criteria for chlorine, BTU, organic compounds and metals.

Any fuels that do not meet acceptance criteria are rejected. We do not accept regulated medical waste, dioxin, PCB or radioactive waste streams. Special handling requirements are also determined by complete review of material safety data sheets (MSDS), supplier information and thorough laboratory analyses.

Incoming shipments are again tested upon arrival and prior to off-loading to verify conformance with established waste profiles and permit specifications. A final lab test confirms that all blended wastes, both hazardous and non-hazardous, comply with cement manufacturing requirements and government standards for burning hazardous waste (40 CFR 266), before they are fed to the kiln.

All kiln inputs (coal, raw material feed, and waste fuel) are sampled and analyzed prior to burning. Kiln outputs (cement and kiln dust) are also sampled and tested. TCLP tests are performed on kiln waste dust to confirm that no metals will leach into the groundwater.

Lab approval forms must be provided to the control room operator before any material is released for use in the kiln. As an added safeguard, metal and chlorine concentrations are entered into a computer network which, by using minute by minute feed rates, verifies that those concentrations are well within the permitted limits.