By method, in writing. The local field's own copy states the fact plainly: there is no state license for this work, so the operator's process is the only screen a buyer has. Ask four questions and expect plain answers: what materials will be removed and why, what standard the crew works to (the OSHA bloodborne pathogens standard, 29 CFR 1910.1030, is the reference crews cite), how regulated waste is transported and disposed of, and whether the estimate is itemized before work begins. An operator who answers those four cleanly has told you how the job will run. One who leads with a phone price has told you something else.
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