Contact Us - Administrative Services Division (ASD) - Architecture/Engineering

Contact

Title/Function

Telephone Number

Gareth Rawle-Diedrick
(Branch Chief )

Branch Chief - Directs all major activities involved in the design, maintenance and oversight of APHIS' owned and leased offices, laboratories and work sites across the United States and internationally.  Develops budgets, strategic plans and detailed action plans to achieve agency goals for individual facilities.  Manages APHIS' Buildings and Facilities (B&F) program. 

Riverdale
301-734-8263

Cynthia Barzey 

Contract Specialist - Provides direct construction contract management support for APHIS owned facilities.  Provides support as requested for other Marketing and Regulatory Program owned or leased facilities.

Riverdale
301-734-5343

Blair Barger, P.E.

Civil/Structural Engineer - Responsible for design/project management of utilities, sewer mains, water mains, water supply and treatment, storm water drainage, grading, roads, parking, fencing, excavation, building foundations, building structural framing systems, and equipment supports.

Riverdale
301-734-7907

Martha Garza

Contract Specialist

956-580-7222

Wendell Leonard

Architect - Responsible for design/project management associated with construction, repair, and alteration of building envelopes, and building interiors. Includes facilities such as laboratories and offices including quarantine facilities, bio-control laboratories, animal import centers, inspection stations, insect rearing facilities, and greenhouses.

Riverdale
301-734-4462

Margaux Nenichka

Contract Specialist

301-734-8263

Keith O'Brien

Mechanical Engineer - Responsible for design /project management of plumbing systems, fire sprinkler systems, heating, ventilation, air-conditioning, boilers, fuel supply, incinerators, fumigation chambers, fume hoods, and installation of fixed equipment.

Riverdale
301-734-5505

Toni Taylor

Electrical Engineer - Responsible for design/project management of power distribution systems, transformers, switch gears, motor control centers, power panels, lighting, security systems, communication systems, fire and smoke detection, emergency generators, and installation of fixed equipment.

Riverdale
301-734-4793

Maxwell Yao, P.E.

Environmental Engineer - Responsible for design/project management of environmental systems including air, water, wastewater, solid waste, hazardous waste, environmental assessments, site cleanups, and environmental management systems.  Also responsible for APHIS facility condition assessments and facilities/equipment support.

Riverdale
301-734-5110

Mailing Address

Riverdale, MD:

USDA, APHIS, MRPBS, ASD
4700 River Road Unit # 115
Riverdale, MD  20737

Fax # - 301-734-3271
 

Minneapolis, MN:

USDA, APHIS, MRPBS, ASD 
100 North 6th Street, Suite 510C 
Minneapolis, MN  55403

Fax 612-370-2106