| ZXEO |
ZymaX envirotechnology, San Luis Obispo, CA |
| ZFSL |
Zymax Forensic, San Luis Obispo, CA |
| ZALB |
Zalco Laboratories, Inc., Bakersfield, CA |
| WSLH |
Wisconsin State Laboratory of Hygiene, Madison, WI |
| WQLW |
San Jose Creek Water Quality Laboratory, Whittier, CA |
| WQLC |
JWPCP Water Quality Laboratory, Carson, CA |
| WPEL |
City of LA Dept. Water & Power Environ. Lab, Los Angeles, CA |
| WLIC |
Weck Laboratories, Inc., City of Industry, CA |
| WLGA |
W. L. Gore and Associates, Inc., Elkton, MD |
| WETS |
Western Environmental Testing Lab, Sparks, NV |
| WCSO |
Watt Construction, Sherman Oaks, CA |
| WCAS |
West Coast Analytical Services, Inc., Santa Fe Springs, CA |
| WBWQ |
West Basin Water Quality Laboratory, El Segundo, CA |
| WALC |
Western Analytical Laboratories, Inc., Chino, CA |
| VLLV |
Veritas Laboratories, Las Vegas, NV |
| VALE |
Vista Analytical Laboratories, El Dorado Hills, CA |
| USCE |
Univ. of Southern California, Dept of Earth Sci., Los Angeles, CA |
| UNAK |
Native Village of Unalakleet, Unalakleet, AK |
| UCDL |
UC Davis Wastewater Treatment Plant Laboratory, Davis, CA |
| TTSA |
Tahoe-Truckee Sanitation Agency, Truckee, CA |
| TSIW |
ToxScan, Inc., Watsonville, CA |
| TRID |
Triangle Laboratories, Inc., Durham, NC |
| TLM |
Torrent Laboratory, Milpitas, CA |
| TLIT |
Turner Laboratories, Inc., Tucson, AZ |
| TLF |
Twining Labs, Fresno, CA |
| TGGB |
TEG, Solana Beach, CA |
| TEI |
Terracon, Irvine, CA |
| TEGR |
TEG Northern California, Inc., Rancho Cordova, CA |
| TDLT |
Truesdail Laboratories, Inc., Tustin, CA |
| TAWS |
Eurofins Environment Testing Northern California, LLC – West Sacramento, CA |
| SWRI |
Southwest Resarch Institute, San Antonio, TX |
| SWLB |
Southwest Laboratory, Broken Arrow, OK |
| SWAA |
Shannon & Wilson, Inc., Anchorage, AK |
| STUD |
South Tahoe Public Utility District, South Lake Tahoe, CA |
| STSM |
Southland Technical Services, Inc., Montebello, CA |
| STLS |
STL Sacramento, West Sacramento, CA |
| STLP |
STL Pittsburgh, Pittsburgh, PA |
| STLK |
STL Knoxville, Knoxville, TN |
| STL8 |
STL Seattle, Seattle, WA |
| STL3 |
STL Los Angeles, Santa Ana, CA |
| STL1 |
Eurofins Denver (formerly STL Denver), Arvada, CO |
| STIS |
Sparger Technology, Inc., Sacramento, CA |
| STEH |
Sierra Testing Lab, El Dorado Hills, CA |
| STCL |
STL ChromaLab, Inc., Pleasanton, CA |
| SSLV |
Silver State Analytical Laboratories, Inc., Las Vegas, NV |
| SSLT |
SunStar Laboratories, Inc., Tustin, CA |
| SSLS |
SunStar Laboratories, Inc., Lake Forest, CA |
| SSLE |
SunStar Laboratories, Inc., Encinitas, CA |
| SRSL |
Sacramento Regional County Sanitation District (SRCSD) Environmental Laboratory, Elk Grove, CA |
| SPLM |
SPL Michigan Laboratory, Traverse City, MI |
| SPLL |
SPL Lafayette Laboratory, Scott, LA |
| SPLH |
SPL Houston Laboratory, Houston, TX |
| SPEC |
Spectra Laboratory, Inc., Tacoma, WA |
| SLOC |
San Luis Obispo Cnt. Eng. Dept. Environ. Lab, San Luis Obispo, CA |
| SLMP |
Stanford Linear Accelerator Center, Menlo Park, CA |
| SIRL |
Sierra Analytical Labs, Inc., Laguna Hills, CA |
| SILD |
Stable Isotope Laboratory - UC Davis, Davis, CA |
| SIGO |
SiREM, Guelph, Ontario, Canada |
| SHLH |
Sherwood Labs Corporation, Hilmar, CA |
| SGSW |
SGS Environmental Services Inc., Wilmington, NC |
| SGSS |
SGS North America Inc., Scott, LA |
| SGSL |
SGS Michigan Division, Ludington, MI |
| SGSA |
SGS North America, Inc., Anchorage, AK |
| SFAK |
Safe Food Alliance, Kingsburg, CA |
| SETO |
Summit Environmental Technologies, Inc.,Cuyahoga Falls, OH |
| SEQW |
Sequoia Analytical Laboratories, Inc., Walnut Creek, CA |
| SEQS |
Sequoia Analytical Laboratories, Inc., Sacramento, CA |
| SEQP |
Sequoia Analytical Laboratories, Inc., Petaluma, CA |
| SEQM |
Sequoia Analytical Laboratories, Inc., Morgan Hill, CA |
| SEQC |
Sequoia Analytical Laboratories, Inc., San Carlos, CA |
| SEMS |
Sierra Environmental Monitoring, Sparks, NV |
| SDLA |
Dept. of General Services, Standards Division, Los Angeles, CA |
| SDGE |
Environmental Analysis Lab, SDGE, San Diego, CA |
| SCST |
Southern California Soil & Testing, Inc., San Diego, CA |
| SCLW |
Soil Control Lab, Watsonville, CA |
| SC3S |
S-Cubed, A Division of Maxwell Laboratories, Inc., San Diego, CA |
| SAS |
Sound Analytical Services, Inc., Tacoma, WA |
| SALR |
Shasta Analytical Laboratory, Inc., Redding, CA |
| SAFW |
Star Analytical, Fort Worth, TX |
| SACS |
Sacramento Area Sewer District, Sacramento, CA |
| RTIM |
RTI Laboratories, Inc., Livonia, MI |
| RTFA |
R.T. Frankian & Associates, Burbank, CA |
| RFWS |
Roy F. Weston, Stockton, CA |
| RFWC |
Roy F. Weston, West Chester, PA |
| RCHR |
RCH Research & Env. Laboratories, Inc., Rancho Dominquez, CA |
| QASC |
Quantum Analytical Services Inc., Carson, CA |
| QALC |
Quality Analytical Laboratories, Inc., Redding, CA |
| QALA |
Quality Analytical Laboratores, Inc., Montgomery, AL |
| PVRV |
ProVera, Roseville, CA |
| PTSL |
PTS Laboratories, Santa Fe Springs, CA |
| PNLE |
Pacific Northwest Laboratories, Eugene, OR |
| PLW |
Perry Laboratory, Watsonville, CA |
| PLSA |
Positive Lab Service, Los Angeles, CA |
| PIWF |
Pace Analytical Services, Inc., Wappingers Falls, NY |
| PITB |
Pace Analytical Services, Inc., Tampa Bay, FL |
| PISW |
Pace Analytical Services, Inc., Seattle, WA |
| PIP |
Pace Analytical Services, Inc., Pittsburgh, PA |
| PINY |
Pace Analytical Services, Inc., New York, NY |
| PIN |
Pace Analytical Services, Inc., Novato, CA |
| PIM |
Pace Analytical Services, Inc., Minneapolis, MN |