TIMOTHY P. ZIMMERMAN

EDUCATION

Front Range Community College, Hazardous Materials Technology.

PROFESSIONAL EXPERIENCE: Ten years of experience with the remediation of asbestos, radioactive and organically contaminated sites; the operation of ground-water treatment systems; soil, vapor, ground-water and surface water sampling; and database management.

Doty & Associates, LLC, 1997 - present, Chief Technician. Operation of a soil vapor extraction system, operation of a ground-water gradient control system with granular activated carbon treatment, operation of a dual-phase vapor/liquid extraction system with air-stripper treatment of produced fluids, routine ground-water and surface water monitoring at landfills, explosive gas monitoring at landfills, installation of explosive gas venting and monitoring systems, maintenance of radiation detectors, data validation and management of soil, vapor, ground-water and surface water monitoring results.

Tierra Environmental Consultants, 1996 - 1997, Ground-Water Technician. Collection of ground-water and surface water samples at the Rocky Flats Nuclear Plant. Installation of sampling points using a truck-mounted geoprobe. Database management activities. Equipment maintenance and calibration.

Golder Federal Services, 1995 - 1996, Ground-Water Technician. Collection of ground-water and surface water samples at the Rocky Flats Nuclear Plant. Installation of sampling points using a truck-mounted geoprobe. Database management activities. Equipment maintenance and calibration.

CRS, Inc., 1992 - 1994, Environmental Technician. Involved in many phases of the demolition of the Shattuck site in Denver and the encapsulation of the debris. Work included asbestos abatement, radiation monitoring, and verification sampling.

PROFESSIONAL CERTIFICATIONS:

OSHA Hazardous Waste Site Worker Training (29 CFR 1910.120)
Confined Space Entry
Radiation Worker II (Rocky Flats)
Health and Safety Specialist (Rocky Flats)
Radioactive Source Custodian (Rocky Flats)