Larson & Associates, Inc. (LAI) performs Naturally Occurring Radioactive Materials (NORM) surveys in oil and gas producing areas for worker protection and focused remediation. NORM surveys ensure the proper handling and disposal of petroleum cleaning processes (tank bottoms, sludge, and decommissioned service equipment). LAI can help you meet regulatory requirements and reduce your environmental liability by safely managing decontamination and disposal of NORM-contaminated materials.