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T.K. Engineering Corp.
- 3565 Lexington Ave. El Monte, CA 91731
- (626) 575-2856
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Terraeon Consultants West
- 5035 S. 33rd St. Phoenix, AZ 85040
- (602) 276-6008
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The Mark Group Inc.
- 3480 Buskirk Ave. Ste.120 Pleasant Hill, CA 94523-4357
- (714) 546-0602
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Thums
- PO Box 2900 Long Beach, CA 90801
- (213) 436-9211
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TRW Space & Defense Corp
- 1 Space Park Blvd #E15076 San Bernardino, CA 90278
- (310) 812-4321
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URS Coorporation
- 911 Wilshire Blvd. Suite 700 Los Angeles, CA 90017
- (213) 996-2200
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URS Coorporation
- 10723 Bell Ct. Rancho Cucamonga, CA 91730-4834
- (909) 980-4000
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URS Coorporation
- 2020 East First Street, Suite 400 Santa Ana, CA
92705
- (714) 835-6886
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URS Coorporation
- 1615 Murray Canyon Rd. Suite 1000 San Diego, CA
92108
- (619) 294-9400
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U.
S. Bureau of Reclamation
- 2800 Cottage Way Sacramento, CA 95825
- (916) 979-2464
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Union Oil Company
- 1150 Canal Blvd Richmond, CA 94804
- (510) 235-9944
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Unocal Energy/Mining Division
- 376 Valencia Ave., Brea, CA 92823
- (714) 528-7201
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Unocal Pipeline
- 9653 Santa Fe Springs Rd Santa Fe Springs, CA 90670
- (562) 944-5525
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| US Army Corps of Engineers Geology Section
333 Market Street San Francisco, CA 94111
(415) 977-8618
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US Borax
- 14496 Borax Rd. Boron, California 93516
- (760) 762-7000
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USGS
- 345 Middlefield Rd. Bldg. 6 Menlo Park, CA 94025
- (650) 329-4162
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USGS
- 12201 Sunrise Valley Dr., MS-205 Reston, VA 20192
- (703) 648-7484
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USGS
- Denver Fed Ctr Bldg 53 Box 25046 Denver, CO 80225-0046
- (303) 236-5900
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W.
H. Bonner Associates
- 15619 Ogram Ave Gardena, CA 90249
- (310) 675-2745
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Washington Department of Ecology
- N 4601 Monroe Suite 100 Spokane, WA 99205-1295
- (509) 625-5181
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William Cotton & Associates
Inc.
- 330 Village Lane Los Gatos, CA 95030
- (408) 354-5542
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William Lettis & Associates
- 1777 Botelho Dr. #262 Walnut Creek, CA 94596
- (510) 832-3716
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WZI, Inc.
- 4700 Stockdale Hwy., Suite 120 Bakersfield, CA
93309
- (805) 326-1112
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