Here are some of our Zen Friends that we have worked with over the years.


A. D. Marble & Company
ABMB Engineers
Ace Land Survey - Hawaii
Ace Technical Books
Acrodex, Inc
Advanced Digital Mapping
AEC CADCON Inc.
AEC Systems
Aecon Construction
Africon Engineering Int
Aillet Fenner Jolly McClelland, Inc.
Alameda Corridor Project, Los Angeles, CA
Alcoa (Australia)
Aldrich Engineering
Algal Technologies, Inc
AM4CADD; Phoenix, AZ
AMEC Americas Ltd
American Engineers, Inc.
Anderson Perry & Associates
ARCO
Arizona Game & Fish Department
Arora & Assoc
AS ETP Grupp
ASL Consultants
AUCOIN & Associates
Axiom International
Ayers Associates, Inc
Azimuth Surveying and Mapping
Aztec Engineering
Bantrel
Barajas & Associates, Inc.
Baron Design & Drafting
Baskerville-Donovan, Inc.
Bechtel Australia
Bechtel Canada
Bechtel Corp.
Bechtel National Inc. (BNFL)
Bechtel Nevada
Bechtel; Houston, TX
Bechtel; Los Angeles, CA
Bechtel; Norwalk, CA
Bechtel; San Francisco, CA
Benatec Associates
Benem Tech Services, LLC
Bentley Canada, Inc
Bentley Systems
Berg Power Engineers, Inc.
Berger/Abam
Bergmann Associates
BHP Copper
Bollinger Lach & Associates
Boyle Engineering
Boyle Engineering; Newport Beach, CA
Boyle Engineering; Ontario, CA
Boyle Engineering; San Diego, CA
Boyle Engineering; Ventura, CA
Bridgefarmer & Associates. Inc.
Brigham Young University
Brooks Hersey & Associates
Brosz Engineering
Brown Book Shop
BRW; Brookfield, WI
BRW; Phoenix, AZ
Bucher, Willis & Ratliff
Bureau of Indian Affairs - MT
Bureau of Indian Affairs, Roads; Juneau, AK
Bureau of Indian Affairs, Survey; Juneau AK
Bureau of Indian Affairs; Aberdeen, SD
Burgess & Niple
Burgess; Phoenix, AZ
Burns & McDonnell
C&C Aerial
C.H. Fenstermaker & Assoc.
CAD Collateral
CAD Productivity
California Dept. of Water Resources
Caltrans
Caltrans, Los Angeles District
Carollo
Carter
Carter-Burgess
Carter-Burgess, Nevada
Carter-Burgess, Phoenix AZ
Carter-Burgess, St George UT
CCS Planning & Engineering; San Ramon, CA
CDM
CEI Engineering Associates; Arkansas Office
CEI Engineering Associates; Georgia Office
CES
CH2M Hill
CH2M Hill - Alaska
CH2M Hill, Irvine, CA
CH2M Hill, Oakland, CA
CH2M Hill, Phoenix, AZ
CH2M Hill; Anchorage, Alaska
CH2M Hill; Boise, ID
CH2M Hill; Portland, OR
CH2M Hill; Redding, PA
CH2M Hill; Sacramento, CA
CH2M Hill; Seattle, WA
Chaudhary Associates
City of Portland - Engineering
City of Portland - Survey
City of San Diego
City of San Jose, Survey Section
City of Santa Ana, Engineering
City of Santa Ana, Survey
City of Scottsdale, Engineering
City of Scottsdale, Survey
City of Scottsdale, Water Resources
City of South Gate, CA
City of Tempe, AZ Public Works
City of Toronto
City of Troy, MI
City of Tucson, AZ
City of Tulsa
CivCo Engineering
Close, Jensen & Miller
Coaster Corporation
Coe & Van Loo; Phoenix, AZ
Collar, William & White Engineering
Colt Engineering
Connecticut DOT
Consolidated Land Services, Inc.
Construction Industry Council
Contra Costa County, Public Works
Contra Costa County, Sanitary District
Contractor's Layout
Cordoba Corporation
Corp of Engineers - Baltimore
Corp of Engineers - Chicago
Corp of Engineers - Hawaii
Corp of Engineers - Los Angeles
Corp of Engineers - Los Angeles
Corp of Engineers - Memphis
Corp of Engineers - Mississippi
Corp of Engineers - New Orleans
Corp of Engineers - New York
Corp of Engineers - North Carolina
Corp of Engineers - Omaha, NE
Corp of Engineers - Sacramento
Corp of Engineers - San Francisco, CA
Corp of Engineers - Savannah
Corp of Engineers - Seattle
Corp of Engineers - Texas
Costello Lomasney & De Napoli, Inc.
CoSyn Technology
County of Hawaii, Dept of Water Supply
COWI Gulf Bahrain
Crafton Tull Sparks
Crispell
CSS
CTE Engineers, Inc.
David Evan & Assoc
David Evan & Assoc.; Los Angeles, CA
David Evans & Assoc.; Portland, OR
David Evans & Assoc; Phoenix, AZ
DDK Consulting
DeGrove Surveyors, Inc
Delcan Corporation
Department of Energy
Department of Natural Resources, WA
Department of Water Resources, CA
Dessau
DHV POLSKA
DMJM - Utah
DMJM AECOM - New Jersey
DMJM AECOM - San Jose
DMJM AECOM- Orange County
DMJM Harris
DMJM; Phoenix Office
DMJM+Harris; LA Office
Dokken Engineering
Donevan Fleischmann Petrich Ltd
DOT: Alabama, All Divisions & Departments
DOT: Arizona, CAE Section
DOT: Arizona, Construction Div
DOT: Arizona, Engineering Section
DOT: Arizona, Survey Section
DOT: Colorado
DOT: Connecticut, Engineering
DOT: Connecticut, Survey
DOT: Hawaii, Design Dept
DOT: Hawaii, Mapping Dept
DOT: Hawaii, Survey Dept
DOT: Idaho
DOT: Nevada, Engineering Division
DOT: Nevada, Mapping Division
DOT: Nevada, Survey Division
DOT: New Jersey
DOT: New Jersey, Bridge Division
DOT: New Mexico
DOT: Oklahoma
DOT: Oregon
DOT: Pennsylvania, Design
DOT: South Dakota, Road Design
DOT: South Dakota, Survey
DOT: Texas, Bridge Division
DOT: Utah
DOT: Virginia
DOT: Washington
DOTD: Louisiana
Duke Engineering
Earthtech
East Bay Municipal Utility District
Eastern Municipal Water District
Eastman Chemical Company
Echols Surveying
Eichenberger AG
EMCS Design Group
Engineeering Resource Center
Engineering Northwest, Ltd
ENGlobal Engineering, Inc
Entranco Engineering
Envision Group, LLC
Escano & Associates
ESS Connect; Phoenix AZ
Evans-Graves Engineers, Inc.
Exel Tech
Federal Aviation
Fehr & Peers
Felsburg Holt & Ullevig
Florence & Hutchenson, Inc.
Fluor Canada Ltd
Fluor Corporation
Fluor Daniel Caribbean, Inc.
Fluor Daniel; Marlton, NJ
Fluor Daniel; Newport Beach, CA
Frederic R. Harris, Inc
Gannett Fleming
Garcia & Wright Consulting Engineers, Inc
Garg Engineering
GEC, Inc
Geo_legnia SLP
GIS International, Inc
Goodwyn, Mills & Cawood
Gordon Bua & Read, Inc.
Granite Construction
Gresham Smith & Partners


Haaland Group, CA
Hai-Pine Drafting & Design
Hallmark
Hanson Wilson
Harris Kocher & Smith
Hatch Limited
Hatch Mott MacDonald - Gilroy
Hatch Mott MacDonald - Vancouver
Hawaii Electric & Light, Survey Dept.
Hawaii Electric Light Company
Hawaii Electric, Engineering Dept
Hawaii Electric, Survey Dept.
HDR - Alaska
HDR - Bellevue WA
HDR - Idaho
HDR - Irvine, CA
HDR - Los Vegas, NV
HDR - New Mexico
HDR - Omaha, NE
HDR - Phoenix AZ
HDR - Pittsburgh PA
HDR - Portland, OR
Hendrick, Eberhart & Associates, Inc.
Hernandez, Kroone & Associates
HM Systems, Inc.
HNTB - Los Angeles, CA
HNTB - San Bernardino, CA
HNTB - Santa Ana, CA
HNTB Corporation
Holladay Engineering Co.
Holmes & Narver, Inc.
Holnam Inc.
Horrocks Engineers
Hubbell, Roth, & Clark, Engineering
Hubbell, Roth, & Clark, Survey Dept.
Huval & Associates, Inc
I B Design
IBI Group Giffels Assoc
IEA Inc.
IMA Design
Information Solutions, Inc.
Interdraft CADD Services
Jacobs Civil Inc
Johnson & Associates
Johnson Brittain & Associates, Tucson AZ
Joyner & Keeny
JSA Engineering
J-U-B Engineers, Inc
Kapur & Associates, Inc
KBR, Inc
Kenney Aerial Mapping, Inc.
Key Engineering
Kiewit
King County; Seattle, WA
Kirkham - Michael
Knowledgebase Consulting Group LLC
KPFF Consulting Engineers
KS Engineers, P.C.
LA County Dept Public Works
LA County Dept. of Water & Power
LA County Sanitation District
LA County, Design Division
LA County, Mapping Division
LA County, ROW Division
LA County, Water Division
Labella Associates
Lake County Div. Of Transportation
Lakeland Electric
Lamac Engineering
Land Technologies
LandAir Surveying
Landtech
Larson Design Group
Lazenby & Associates
Lilburn, San Bernadino CA
Linfield, Hunter & Junius, Inc.
Lockwood Kessler and Bartlett
Loiederman & Associates
Loris and Associates, Inc
Ludwig Engineering
MACTEC Engineering Consulting
Mapping Automation, Phoenix AZ
Maricopa County DOT
Maricopa County Flood Control
McClain Harbor Co. Inc
McCormick Rankin Corp
Meckel Engineering & Surveying
Medina Consultants, P.C.
Metro College of Technology
Metropolitan Water District - La Verne
Metropolitan Water District, LA CA
Michael Baker
Ministry of Transportation
Mississippi State University
MJM Consulting, LLC
MK Centennial - Irvine Office
MK Centennial - Pleasanton CA
MMLA; Tucson, AZ
Mobil Oil; Torance CA
Moffatt & Nichol Engineers
Mojave Water Agency
Montgomery Watson Americas, Inc.
Montgomery Watson, Sacramento CA
Montgomery Watson; Pasadena CA
Morrison Maierle, Inc
MWA Apple Valley
MWH
NAVFAC : Southern Division
NAVFAC : Southwest Division
New York State Electric & Gas Co.
NJS Engineering
Nolte Associates
Northwest LUG
NY State Thruway Authority
OBEC Consulting Engineers
Olson Engineering
Olsson Associates
Opamp Technical Books
Otak, Inc.
Pacific Digital Network Company
Pacific Gas & Electric Company
PAIKI
Palmer Engineering
Parametrix
Parsons
Parsons Brinckerhoff - Nevada
Parsons Brinckerhoff - New York
Parsons Brinckerhoff Quade & Douglas, AZ
Parsons Brinckerhoff Quade & Douglas, Hartford CT
Parsons Brinckerhoff Quade & Douglas, San Bernardino CA
Parsons Brinckerhoff Quade & Douglas, San Diego CA
Parsons Brinkerhoff PA
Parsons Corporation
Parsons; Orange County CA
Parsons; Pasadena CA
PBS & J; Phoenix, AZ Office
PBSJ - Orange
PBSJ - Perris
Pearson, Brown & Assoc
Pender Engineering
Phoenix Community College
Pima County Flood Control
Pima County, AZ
Poe & Associates
Port of Long Beach
Post Enterprises, Inc.
ProSoft
Psomas - Santa Ana, CA
Psomas - Santa Monica CA
Psomas - Utah
Purcell Associates
Quincy Engineering
Rail Infrastructure Corp.
Ramaker and Associates
Ramboll Sweden AB
RAW International
Raytheon
RBF Consulting
Realtime Cadd Services; Madison WI
Region of Halton Planning & Public Works
Resources Systems Group Inc.
Rick Engineering; Riverside, CA
Rick Engineering; San Diego, CA
Rick Engineering; Tucson, AZ
Riverside County
Riverside County Flood Control
Riverside County Waste Management
Robert Bein William Frost & Assoc.
Rummel, Klepper & Kahl, LLP
Ruzenski Surveying
SAI Consulting Engineers,Inc.
Salt River Project, Design Division; Phx AZ
Salt River Project, Survey Division; Phx AZ
San Diego Data Processing Corp.
Scacco Consulting, Inc.
Shaw Group
Sikand Engineering, Planning, & Survey
Smith International
SNC-Lavalin Inc.
Snyder, Inc.; Sheboygan WI
Southern California Gas
Southern Engineering Corp.
SSOE, Inc
Stanley Consulting Group
Stantec - Alberta
Stantec Consulting Inc.; Phoenix AZ
STV Inc.
Sullivan County, Dept of Public Works
Sun Maps
Surface Engineering Co.
Survcon Inc.
Sussex County Division of Engineering
Sverdrup; Baltimore, Maryland
Sverdrup; Costa Mesa, CA
Sverdrup; Falls Church, VA
Sverdrup; Maryland Heights, MO
Sverdrup; New York, NY
Sverdrup; Philadelphia, PA
Sverdrup; Phoenix, AZ
Sverdrup; St. Louis, Missouri
T.Y. Lin International
Taylor Wiseman & Taylor
TCS-Tech Computer Services
Tecsult Inc.
Tellus Engineering
Tetra Tech, Inc
The Louis Berger Group, Inc
The RBA Group
Trahan Engineeering
Trans Associates
TranSystem Corporation
Trow Associates
Tucson Water District
Turlock Irrigation District
Union Pacific Railroad
Universal GeoSystems
University of Arizona, Civil Engineering Dept.
URS Corporation
URS Greiner, Phoenix, AZ
V Point Planners, Engineers & Surveyors
Vaughn & Melton
Via Rail Logistics
VicRoads Design
Volkert & Associates
VTN West
W & H Pacific
Wade Trim; Flint, MI
Wade Trim; Grand Rapids, MI
Wade Trim; Tampa, FL
Wade Trim; Taylor, MI
Wade-Trim; Bay City, MI
Walt Disney Imagineering
Washington County, OR
Washington Group - California
Washington Group - Idaho
Washington Group - Illinios
Washington Group - Irvine
Washington Group - New Jersey
Washington Group International
Washington Infrastructure
Wei Roo & Associates
Welch Comer & Associates
Wendel Duchscherer
Wes Thomas Associates
Westech College
Westland Group, Inc.
Wildan Associates; Anaheim, CA
Wilson & Company, Inc.
Wisconsin Power & Light
Worley Parsons
Worley Parsons - Australia
WSP Sweden AB - Civils
WW Associates, Inc
Z & H Engineering

Zen Engineering

3786 La Crescenta Avenue, Suite 107
Glendale, CA 91208 USA

Phone: (818) 957-7939

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