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Drewelow Remediation Equipment, Inc.
A Minority Woman Owned, Certified Small Business Since 1993

David S. Drewelow
1523 Sterling Court
Encinitas, CA 92024
Phone: 760-546-6456
Fax: 760-546-6476
Mobile: (760) 715-8912
Email: david@dre-equip.com
www.dre-equip.com

Vice President/Petroleum Engineer – Drewelow Remediation Equipment, Inc – Escondido, CA –
10/93 to present
Provide engineering and contracting service for the selection, installation, startup, routine O&M, trouble
shooting and repair of vapor extraction and groundwater treatment equipment. Supply rental thermal
oxidizers, rental blower packages, rental pump and treat equipment and activated carbon equipment.
Supply new remediation equipment. Performed routine O&M at remediation sites throughout Southern
California for commercial, industrial and Department of Defense projects. Have made hundreds of site
visits to trouble shoot and repair remediation equipment. Extensive experiences in the use of electrical test
equipment to trouble shoot and repair complicated motor control circuits, temperature feedback circuits, 0 –
5 volts circuits, 4 – 20 ma circuits and 120-volt control circuits. Supply and install blowers, motors,
pumps, temperature sensors and switches, pressure sensors and switches, 4 – 20 ma valve actuators, motor
starters, etc. Design and manufacture blower packages and gas / liquid separators, water systems with high
level alarms, pump down or pump up operations and remote telemetry systems.

Senior Engineer – Vapor Extraction Technology – San Clemente, CA – 9/92 to 9/93
Responsible for the design, installation, operation, maintenence and monitoring of vapor extraction systems
(VES). Installed thirteen VES’s of various types in 1993. Managed the operation and monitoring of
seventeen sites throughout Southern California, resulting in two site closures and significant reductions of
soil and groundwater contamination at the remaining sites. Developed a maintenence program for
remediation equipment, which resulted in a marked increase in equipment reliability and uptime. Carried
out all major modification and repairs to remediation equipment. Highly skilled in VES optimization to
reduce cleanup time and to cut utility cost. Designed and manufacture vapor extraction equipment.

Hydrogeologist / Engineer – Hargis + Associates – La Jolla, CA – 8/91 to 8/92
Responsible for the operation, maintenance and monitoring of an electrical oxidizers and free product
removal system. Developed standard operating procedures (SOP) to ensure accurate and repeatable
monitoring, data collection and equipment maintenence. Trained staff in SOP’s. Wrote quarterly progress
reports for remediation projects. Wrote phase 1, phase 2 and remedial action reports. Supervised the
drilling and installation of monitoring wells, soil borings and vapor extraction wells. Collected soil
samples and groundwater samples and completed COC’s. Created water level contour maps, lithology
logs, geologic cross sections and iso contour maps.

Driller – Layne Environment – Long Beach, CA – 9/89 to 7/91
Operated mud rotary, air rotary, casing hammer and hollow stem auger drilling equipment. Drilled and
completed wells for environmental, geotechnical and water supply projects. Operated soil-sampling
equipment (SPT, split spoon and Shelby tubes). Installed drilled and complete over 500 wells.

Education / Licenses / Certificates
BS Petroleum Engineering, University of Texas at Austin, 1987
8 Hour OSHA supervisor training, 1994
40 Hour OSHA training per 29 CFR 1910.120/T8 CCR 5192, 1991 last update June 1999
California Contractors License D21 – Machinery and pumps, 1996

Yucaipa Groundwater Sustainability Agency - March 14, 2018 - Page 186 of 226