GSA Federal Acquisition Service
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Phone: 1-800-488-3111
E-mail: ncsccustomer.service@gsa.gov

MAS Multiple Award Schedule
Professional Services - Technical and Engineering Services (non-IT)
Category Description
541370GIS Geographic Information Systems (GIS) Services Geographic Information Services (GIS) provided in support of environmental program include: cultural resource GIS (CRGIS); groundwater monitoring; growth forecast modeling; habitat conservation plans; habitat modeling; image analysis support for emergency response; mapping, cartography, and mashups (e.g., combining data from more than one source into a single integrated tool to include aerial mapping); migration pattern analysis; natural resource planning; remote sensing for environmental studies; terrestrial, marine, and/or atmospheric measuring/management; vegetation mapping; and watershed characterization for mitigation planning.

NOTE: The services offered under this scope shall NOT include surveying and mapping services as set forth in FAR Part 36, and defined under the Brooks Act of 1972 (Public Law 92-582, 40 U.S. 1102 et seq.).
268 contractors

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ZIA ENGINEERING & ENVIRONMENTAL CONSULTANTS, L.L.C. GS-10F-0391N 575-680-2337 LAS CRUCES ,NM s/d
XCEL ENGINEERING, INC. GS-10F-0211P 865-481-3200 OAK RIDGE ,TN s/dv
XCEL ENGINEERING, INC. 47QRAA22D00D0 865-766-8543 OAK RIDGE ,TN s/dv
WSP USA SOLUTIONS INC. 47QRAA18D002R 202-303-2613 WASHINGTON ,DC o
WSP USA SOLUTIONS INC. 47QRAA18D0073 (202)303-2613 WASHINGTON ,DC o  
WSP USA ENVIRONMENT & INFRASTRUCTURE INC. GS-00F-314CA 610-877-6109 BLUE BELL ,PA o
WILSON & COMPANY, INC., ENGINEERS & ARCHITECTS 47QRAA21D0052 505-348-4194 ALBUQUERQUE ,NM o
WHITE SHIELD, INC. GS-10F-0357U 509-547-0100 PASCO ,WA s/d
WETLAND STUDIES AND SOLUTIONS, INC. GS-10F-0273W 703-679-5609 GAINESVILLE ,VA o
WESTWATER ENGINEERING, INC. 47QRAA20D002M 9702417076 GRAND JUNCTION ,CO s/w/wo/ew
WESTON SOLUTIONS, INC. 47QSHA18D0016 773-255-8240 ALBUQUERQUE ,NM o
WESTERN ECOSYSTEMS TECHNOLOGY, INC.       GS-10F-072BA (307)634-1756 CHEYENNE ,WY o  
WATER, CIVIL, AND ENVIRONMENTAL INCORPORATED GS-00F-386GA (208) 319-9744 BOISE ,ID s/w/wo/ew/d/8a
WATER & ENVIRONMENTAL TECHNOLOGIES 47QRAA22D00DS 509-592-3289 BUTTE ,MT s
VERNADERO GROUP INCORPORATED GS-10F-0033T 4803151000 PHOENIX ,AZ s/v
VANASSE HANGEN BRUSTLIN, INC. GS-10F-0481P (802)229-4600 WATERTOWN ,MA o  
VANASSE HANGEN BRUSTLIN INC GS-00F-116CA 804-441-7439 WILLIAMSBURG ,VA o
TUKUH TECHNOLOGIES, LLC       47QRAA21D000R 816-708-1045 KANSAS CITY ,MO s/d/8a
TRINITY ENGINEERING ASSOCIATES, INC. GS-10F-0306P (513) 620-7115 CINCINNATI ,OH s/wo/ew/8a
TRINITY ANALYSIS AND DEVELOPMENT CORP. GS-00F-213DA (850)613-6800 SHALIMAR ,FL s/d  
TRIHYDRO CORPORATION GS-00F-136GA 307-745-7474 LARAMIE ,WY s/h
TRANSYSTEMS CORPORATION 47QRAA19D001C 510-835-9898 KANSAS CITY ,MO o
TRANSPO GROUP USA, INCORPORATED       47QRAA21D0051 845-207-0786 KIRKLAND ,WA s
TIERRA RIGHT OF WAY SERVICES, LTD. GS-10F-0038T 520-319-2106 TUCSON ,AZ o
TETRAHEDRON INC GS-10F-0598N 410-837-0512 BALTIMORE ,MD s/w/d/8a
TETRA TECH, INC. GS-00F-168CA 8056813102 PASADENA ,CA o
TETRA TECH EC, INC. 47QRAA18D00H0 8036414928 GOLDEN ,CO o
TERWILLIGER CONSULTING, INC. 47QRAA21D003F (757) 787-3974 LOCUSTVILLE ,VA s/w/wo
TERRAPHASE ENGINEERING INC. 47QRAA22D006X 510-388-8745 OAKLAND ,CA s
TECTONIC ENGINEERING CONSULTANTS, GEOLOGISTS & LAND SURVEYORS, D.P.C. GS-00F-015BA 1-845-534-5959 MOUNTAINVILLE ,NY o
TECHLAW CONSULTANTS, INC. 47QSWA18D008B 703-818-3233 CHANTILLY ,VA o
T3W BUSINESS SOLUTIONS, INC. 47QRAA19D000N 6192980888 SAN DIEGO ,CA s/w/wo
SYSTEMATIC MANAGEMENT SERVICES, INC. GS-00F-241CA 3013530072 FREDERICK ,MD s
SWCA, INCORPORATED 47QRAA19D004C 602.274.3831 PHOENIX ,AZ o
SURVEYING AND MAPPING, LLC 47QRAA18D008X 512-447-0575 AUSTIN ,TX o
SURF TO SNOW ENVIRONMENTAL RESOURCE MANAGEMENT, INC. 47QRAA21D000B 925-362-3114 SAN RAMON ,CA s/dv/d
STRAUGHAN ENVIRONMENTAL, INC. GS-10F-014CA 4435392535 COLUMBIA ,MD s/w/wo/ew/d
STILLWATER ECOSYSTEM, WATERSHED & RIVERINE SCIENCES GS-10F-0216S (510)848-8098 BERKELEY ,CA s/w/wo  
STETSON ENGINEERS, INC       GS-10F-0404P 415-457-0701 SAN RAFAEL ,CA s
STEARNS, CONRAD AND SCHMIDT CONSULTING ENGINEERS, INC. 47QRAA20D002R (703)471-6150 LONG BEACH ,CA o  
STANTEC CONSULTING SERVICES INC. 47QRAA19D000Q 916-418-8338 BROOMFIELD ,CO o
SPECTRA TECH, INC. GS-00F-264CA 865-813-2131 OAK RIDGE ,TN s
SPECPRO PROFESSIONAL SERVICES, LLC       47QRAA19D004W 210-201-8994 SAN ANTONIO ,TX s/d/8a
SPECPRO MANAGEMENT SERVICES, LLC       47QRAA19D007P 210-424-2110 SAN ANTONIO ,TX s/d/8a
SPATIAL INFORMATICS GROUP LLC 47QRAA20D004S 510-427-3571 PLEASANTON ,CA s
SONOMA TECHNOLOGY, INC. 47QRAA18D00D1 707-665-9900 PETALUMA ,CA s
SOLV LLC 47QRAA18D00DH 7037604801 MC LEAN ,VA s
SHERPA 6, INC. 47QRAA21D000A 703-260-8188 LITTLETON ,CO s/dv
SES, INC. 47QRAA22D0083 913-307-0046 LENEXA ,KS s
SANBORN MAP COMPANY, INC., THE GS-10F-0099W (719) 264-5510 COLORADO SPRINGS ,CO o
S.S. PAPADOPULOS & ASSOCIATES, INC. 47QRAA22D0037 301-500-2275 ROCKVILLE ,MD s
S P CRAMER & ASSOCIATES INC 47QRAA19D0045 (888) 224-1221 PORTLAND ,OR s
ROSS & ASSOCIATES ENVIRONMENTAL CONSULTING, LTD. GS-00F-0045P (206)447-1805 SEATTLE ,WA s  
ROSS & ASSOCIATES ENVIRONMENTAL CONSULTING, LTD. 47QRAA22D008B 206-447-1805 SEATTLE ,WA s
RIVERSIDE TECHNOLOGY, INC. GS-00F-0026P 9705685657 LOVELAND ,CO s
RESPEC COMPANY, LLC 47QTCA19D0084 (605) 394-6400 RAPID CITY ,SD o
RESEARCH TRIANGLE INSTITUTE GS-00F-354CA 9195416624 RESEARCH TRIANGLE P ,NC o
RESEARCH PLANNING, INC. 47QRAA19D003K 803-256-7322 COLUMBIA ,SC s/w/wo
REDHORSE CORPORATION       GS-00F-0013Y 619-241-4609 ARLINGTON ,VA o
REDHORSE CORPORATION GS-07F-134GA (619) 241-4609 ARLINGTON ,VA o
R2T, INC. GS-00F-129GA (770)569-7038 ATLANTA ,GA s/w/wo/ew/d  
QUATERNARY RESOURCE INVESTIGATIONS, L.L.C. GS-10F-105BA 2252921400 BATON ROUGE ,LA s/w/wo/ew/d
QUANTUM SPATIAL, INC. 47QTCA18D001X 608-556-2580 SAINT PETERSBURG ,FL o
PROFESSIONAL ENVIRONMENTAL ENGINEERS, INC. GS-10F-200BA 314-531-0060 SAINT LOUIS ,MO s/w
PROFESSIONAL ENGINEERING SERVICES LTD 47QRAA21D008Y (952)456-6707 MINNEAPOLIS ,MN s/w/wo/d    
PREMIER DATA SERVICES, INC 47QTCA19D001D 303.377.0033 ENGLEWOOD ,CO o
POTOMACWAVE CONSULTING, INC. GS-00F-0007X 703-963-5064 ALEXANDRIA ,VA o
PORTAGE, INC. GS-00F-262CA (208)419-4152 IDAHO FALLS ,ID s  
PIONEER TECHNICAL SERVICES, INC. GS-10F-050AA 406-497-8057 BUTTE ,MT s
PERIKIN ENTERPRISES, LLC GS-00F-003AA 505-333-0501 ALBUQUERQUE ,NM s/d/8a/h
PERATON SERVICES & SOLUTIONS INC. GS-00F-296CA (571) 521-7776 HERNDON ,VA o
PBS ENGINEERING AND ENVIRONMENTAL INC. 47QRAA21D0001 206-766-7621 PORTLAND ,OR o
PARSONS GOVERNMENT SERVICES INC. 47QRAA19D000A (210) 477-1616 PASADENA ,CA o
PARADIGM INVESTMENT CAPITAL, L.L.C. 47QRAA23D0008 (202)459-4600 WASHINGTON ,DC s/d/8a    
PANORAMA ENVIRONMENTAL, INC. 47QRAA20D0091 858-349-8883 SAN FRANCISCO ,CA s/w/wo/ew/d
PACIFIC WESTERN TECHNOLOGIES, LTD.       47QRAA21D005V 3032745400 WHEAT RIDGE ,CO s/d
PACIFIC WATERSHED ASSOCIATES INC GS-10F-0244V (707)839-5130 MCKINLEYVILLE ,CA s  
OTAK, INC. GS-10F-0401X 503-287-6825 PORTLAND ,OR o
ONEIDA TOTAL INTEGRATED ENTERPRISES, LLC 47QRAA20D009B (414)607-6767 MILWAUKEE ,WI s/d  
OCEAN ASSOCIATES, INCORPORATED GS-10F-0567P 703-388-9548 ARLINGTON ,VA s/w/wo
OCEAN ASSOCIATES, INCORPORATED GS-35F-372GA 703-819-6939 ARLINGTON ,VA s/w/wo
NUTTER & ASSOCIATES, INC. 47QRAA19D009B 706-354-7925 ATHENS ,GA s/h
NOWAK & FRAUS, P.L.L.C. 47QRAA21D002J (412)404-6235 PONTIAC ,MI s    
NORTHLAND RESEARCH, INC GS-10F-0070W 928-774-5057 FLAGSTAFF ,AZ s
NORTH WIND RESOURCE CONSULTING, LLC GS-10F-111BA 208-419-4152 IDAHO FALLS ,ID s/d/8a
NORTH LINE GIS, LLC 47QRAA20D006H (888)453-4471 BRECKENRIDGE ,CO s  
NORMANDEAU ASSOCIATES INC 47QRAA23D002Z 603-637-1174 BEDFORD ,NH o
NICHOLS CONSULTING ENGINEERS, CHTD. 47QRAA18D008A 7753294955 RENO ,NV s
NATURES IMAGE, INC. GS-10F-045BA 9496804400 LAKE FOREST ,CA s/w/wo
NATURAL RESOURCE INNOVATIONS GMBH 47QRAA19D002P 0049 6221 5993200 HEIDELBERG ,
GERMANY
o
NATIONAL OPINION RESEARCH CENTER 47QRAA20D001M 312-759-5240 CHICAGO ,IL o
MTSA II JV LLC 47QRAA23D001Y 703-930-9624 FAIRFAX ,VA s/dv
MOTIVF CORP 47QRAA22D00AG 8083544281 ALEXANDRIA ,VA s
MICHAEL BAKER INTERNATIONAL, INC. 47QRAA21D008D 703-483-0029 ALEXANDRIA ,VA o
MERKEL & ASSOCIATES, INC. GS-10F-0060T 858-560-5465 SAN DIEGO ,CA s/w
MEAD AND HUNT, INC. GS-00F-230DA 906-629-1360 MIDDLETON ,WI o
MDB, INC. 47QRAA20D0028 202-331-0060 WASHINGTON ,DC s
MATRIX ENVIRONMENTAL SERVICES LLC GS-00F-057GA (303)572-0200 DENVER ,CO s  
MATRIX DESIGN GROUP, INC. 47QRAA19D009K (719)575-0100 COLORADO SPRINGS ,CO o  
MARSTEL-DAY, LLC GS-00F-070CA 7038395513 FREDERICKSBURG ,VA s
MANTECH SRS TECHNOLOGIES, INC. GS-10F-0054R 703-218-6440 HERNDON ,VA o
MANNIK & SMITH GROUP, INC., THE 47QRAA20D006A 734-790-5177 MAUMEE ,OH s
LYNKER CORPORATION 47QTCA19D00GN 7034315855 LEESBURG ,VA s/h
LYNKER CORPORATION GS-00F-125CA 7034315855 LEESBURG ,VA o
LRS FEDERAL LLC GS-10F-0360T (410) 544-3570 SEVERNA PARK ,MD s/dv
LOYOLA ENTERPRISES INC 47QTCA21D00DE 757-498-6118 X101 VIRGINIA BEACH ,VA s/dv/d
LOGAN SIMPSON DESIGN INC. GS-10F-0063P (480)967-1343 TEMPE ,AZ o  
LOGAN SIMPSON DESIGN INC. 47QRAA22D0004 480-967-1343 TEMPE ,AZ s
LJB INC GS-00F-049CA 937-259-5000 MIAMISBURG ,OH o
LINDAHL REED, INC. 47QRAA18D00GR 541/638-9164 REDMOND ,OR s/w/wo/ew/d/8a
LIMNO-TECH, INC. GS-10F-150BA 734-332-1200 ANN ARBOR ,MI o
LG2 ENVIRONMENTAL SOLUTIONS INC       GS-10F-0375N 9043631686 X104 JACKSONVILLE ,FL s/w/wo/ew/d/8a
LEIDOS, INC. GS-00F-022CA 240-460-5984 RESTON ,VA o
LAYERMARK INC 47QTCA23D0010 (412)404-6235 WASHINGTON ,DC s    
LARSON DESIGN GROUP, INC. 47QRAA19D00CU 412-528-0525 WILLIAMSPORT ,PA o
LAGO CONSULTING & SERVICES LLC 47QRAA22D009K 813-774-5559 TAMPA ,FL s/w/wo/ew/d/8a
L S A ASSOCIATES, INC. 47QRAA18D009Y (949)553-0666 IRVINE ,CA o  
KPGEO, LLC 47QRAA19D0052 8166953357 PRAIRIE VILLAGE ,KS s
KNIGHT FEDERAL SOLUTIONS INC 47QRAA19D004N 407-243-6008 ORLANDO ,FL s
KLEINFELDER, INC. GS-10F-0389R (619)831-4634 SAN DIEGO ,CA o  
KLEIN, SUZANNE Q 47QRAA21D005N 504-887-2900 NEW ORLEANS ,LA s/w/wo/ew/d
KLAVON DESIGN ASSOCIATES INC 47QRAA22D00F1 412-394-1181 PITTSBURGH ,PA s/w/wo/d/h
KLAMATH WILDLIFE RESOURCES GS-10F-0399Y 530-244-5652 REDDING ,CA s
KIER, WILLIAM M ASSOCIATES       GS-10F-0124U 415.721.7548 SAN RAFAEL ,CA s
KENIFIC GROUP INC, THE 47QRAA19D00C7 571-636-4002 FAIRFAX ,VA s
KELLER-BLIESNER ENGINEERING, LLC       47QRAA18D004Q 435-753-5651 LOGAN ,UT s
JOHNSON, MIRMIRAN & THOMPSON, INC. GS-00F-194CA 410-329-3100 COCKEYSVILLE ,MD o
JGMS GOVERNMENT SERVICES, LLC GS-00F-0014Y 970-254-1354 GRAND JUNCTION ,CO s/d/8a
JGMS GOVERNMENT SERVICES, LLC 47QRAA22D008H 9702541354 GRAND JUNCTION ,CO s/d
JE FULLER/HYDROLOGY AND GEOMORPHOLOGY, INC. GS-00F-079GA 480-222-5707 TEMPE ,AZ s
JARDON & HOWARD TECHNOLOGIES, INCORPORATED 47QRAA21D008B 407-381-7797 ORLANDO ,FL s/dv
JACOBS ENGINEERING GROUP INC. 47QRAA21D00AF 571-218-1304 ARLINGTON ,VA o
J&M GLOBAL SOLUTIONS LLC GS-10F-0374X 5719706690 ALEXANDRIA ,VA s/w/wo
J FOSTER & ASSOCIATES LLC 47QRAA22D0069 (208)709-0508 IDAHO FALLS ,ID s/w/wo/ew/d/8a    
IPARAMETRICS, LLC GS-10F-112CA 770-664-6636 ALPHARETTA ,GA s
INTEGRATED STATISTICS INCORPORATED 47QTCA19D00B9 5085408560 WOODS HOLE ,MA s/w/wo
INSIGNIA ENVIRONMENTAL 47QRAA20D005U 650-321-6787 MENLO PARK ,CA s/w/wo
INFRASTRUCTURE MANAGEMENT AND ENGINEERING, INC.       47QRAA22D0084 513-826-4338 CINCINNATI ,OH s/d/8a
IIC TECHNOLOGIES INC. GS-10F-0104V 4109977631 RIVERDALE ,MD o
IAP WORLD SERVICES INC GS-35F-407GA 321-784-7396 CAPE CANAVERAL ,FL o
I.M. SYSTEMS GROUP, INC. GS-00F-311CA 202-407-2451 ROCKVILLE ,MD o
HYDROSOLUTIONS INC GS-10F-0172X 4064436169 HELENA ,MT s/dv
HYDROGEOLOGIC, INC. 47QRAA18D00CW 703-736-4551 RESTON ,VA s
HOUSTON ENGINEERING INC 47QRAA23D004Q (701)499-9463 FARGO ,ND o    
HORSLEY WITTEN GROUP, INC. GS-10F-0304T 508-833-6600 SANDWICH ,MA s
HORSLEY WITTEN GROUP, INC. 47QRAA22D005P 508-833-6600 SANDWICH ,MA s
HORIZON ENVIRONMENTAL SERVICES, INC. 47QRAA19D00BS 970-259-4346 DURANGO ,CO s/w/wo/ew
HEXAGON US FEDERAL, INC. 47QRAA18D00A2 478-322-3258 HUNTSVILLE ,AL o
HEXAGON US FEDERAL, INC. 47QTCA18D003G 478-322-3258 HUNTSVILLE ,AL o
HELIX ENVIRONMENTAL PLANNING, INC. GS-10F-0020V 3102783100 LA MESA ,CA o
HEARTLAND GIS LLC 47QRAA22D0059 740-707-9029 DELAWARE ,OH s
HDR ENVIRONMENTAL, OPERATIONS AND CONSTRUCTION, INC. 47QRAA22D00AR 303-754-4252 ENGLEWOOD ,CO o
HDR ENGINEERING, INC. GS-00F-152CA 303-754-4252 OMAHA ,NE o
HARRIS ENVIRONMENTAL GROUP, INC. GS-10F-0457R 52006287648 TUCSON ,AZ s/w/wo/ew/d/8a/h
GSI NORTH AMERICA INC. 47QRAA19D002Z 808-393-7167 FLEMINGTON ,NJ s/d/8a
GSE, INC. 47QRAA18D008P 256-350-9754 TRINITY ,AL s/w/wo
GSD LLC 47QRAA21D0022 7572070809 WILLIAMSBURG ,VA s/v
GRYPHON ENVIRONMENTAL, LLC GS-10F-144BA 719-578-3330 COLORADO SPRINGS ,CO s/dv
GREENMAN-PEDERSEN, INC. 47QRAA21D004M 518-209-4823 BABYLON ,NY o
GRB ENVIRONMENTAL SERVICES INC GS-10F-0284X 212-564-8640 NEW YORK ,NY s/w
GIS SURVEYORS, INC. 47QRAA18D003P 8586791732 POWAY ,CA s/dv/d
GEOSYNTEC CONSULTANTS,INC. 47QRAA22D003A 561-922-1079 BOCA RATON ,FL o
GEOSPATIAL CONSULTING GROUP INTERNATIONAL, LLC       GS-35F-212DA 571-289-0267 ALEXANDRIA ,VA s/w/wo/ew
GEOMORPH INFORMATION SYSTEMS LLC GS-10F-0236X 619-787-7974 SAN DIEGO ,CA s/w/wo/ew/d/h
GEOGRAPHIC RESOURCE SOLUTIONS INC GS-10F-0451N 7078228005 ARCATA ,CA s
GEOGRAPHIC INFORMATION SERVICES, INC.       GS-35F-0682R 205-725-5836 BIRMINGHAM ,AL s
GEOGRAPHIC INFORMATION SERVICES, INC. 47QRAA19D00BD 2057255836 BIRMINGHAM ,AL o
GEOENGINEERS, INC. 47QRAA18D00E3 (425)861-6000 REDMOND ,WA o  
GEOACUITY LLC 47QRAA23D003H 225-603-6017 PALOS VERDES ESTATE ,CA s/dv/d
GENWEST SYSTEMS, INC.       GS-00F-0002W 425-771-2700 EDMONDS ,WA s/dv
GENWEST SYSTEMS, INC. 47QRAA22D006M 425-771-2700 EDMONDS ,WA s/dv
GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. GS-00F-057CA 7039953733 FALLS CHURCH ,VA o
GDS ASSOCIATES, INC.       47QRAA22D0008 770-799-2399 MARIETTA ,GA o
FREESTONE ENVIRONMENTAL SERVICES, INC. 47QRAA18D00GS (509)943-5222 RICHLAND ,WA s  
FRED PHILLIPS CONSULTING LLC GS-10F-0024W (928)773-1530 FLAGSTAFF ,AZ s  
FPM GROUP, LTD. GS-00F-104CA 631-737-6200 BOHEMIA ,NY s
FLUOR FEDERAL SERVICES, INC. 47QSHA22D0008 703-351-6450 GREENVILLE ,SC o
FLOWWEST, LLC 47QRAA22D0057 (727)992-3536 OAKLAND ,CA s    
FIVE 9 GROUP, INC. GS-35F-067GA 703-896-7620 FAIRFAX ,VA s
ESSNOVA SOLUTIONS, INC. GS-35F-427GA 888-405-3189 BIRMINGHAM ,AL s/d/8a/h
ESS GROUP, INC. GS-10F-0080W (401)434-5560 RIVERSIDE ,RI s  
ESP ASSOCIATES, INC. GS-10F-189BA (336)232-5213 FORT MILL ,SC o  
ERO RESOURCES CORPORATION 47QRAA21D0075 3038301188 DENVER ,CO s/w/wo/d
EPSILON SYSTEMS SOLUTIONS, INC. 47QRAA21D005F 619-702-1700 SAN DIEGO ,CA o
ENVIROSCIENCE, INC. GS-10F-0181U 330-688-0111 CUYAHOGA FALLS ,OH o
ENVIRONMENTAL SCIENCE ASSOCIATES 47QRAA21D00AJ 415.896.5900 SAN FRANCISCO ,CA s/d
ENVIRONMENTAL RESEARCH GROUP LLC GS-10F-142BA 4103665170 BALTIMORE ,MD s/w/wo/ew/dv/8a
ENVIRONMENTAL COST MANAGEMENT, INC. GS-10F-0335R (510) 964-4399 COSTA MESA ,CA s/d
ENVIRON-CIVIL ENGINEERING, LTD GS-00F-317CA (410)461-6451 COLUMBIA ,MD s/d  
ENGINEERING & ENVIRONMENT, INC. 47QRAA21D0005 7572879566 VIRGINIA BEACH ,VA s
ENERGY TECHNOLOGY ALLIANCE LLC 47QRAA22D00EG 202-787-1518 REDMOND ,OR s/w/wo/ew/d/8a
ELYON INTERNATIONAL, INC. GS-00F-203GA (360) 696-5892 VANCOUVER ,WA s/w/wo/v/d
ELOS ENVIRONMENTAL, L.L.C. 47QRAA22D005N 985-974-0703 HAMMOND ,LA s
ECOSYSTEM SCIENCES GS-00F-277DA 2083830226 BOISE ,ID s
ECOSPHERE ENVIRONMENTAL SERVICES, INC. GS-10F-0462N 970-382-7256 DURANGO ,CO s
ECORP CONSULTING, INC GS-10F-0010P 916-782-9100 ROCKLIN ,CA o
ECO & ASSOCIATES INC GS-10F-0371U 714-289-0995 TUSTIN ,CA s/w/d/8a
EARTH RESOURCES TECHNOLOGY, INC. GS-00F-109CA 3013231435 LAUREL ,MD o
EA ENGINEERING, SCIENCE, AND TECHNOLOGY, INC., PBC 47QRAA19D005G 410-329-5160 HUNT VALLEY ,MD s
E & S ENVIRONMENTAL CHEMISTRY, INC.       47QRAA21D003Q 541-758-1330 CORVALLIS ,OR s
DYNAMIX CORPORATION GS-10F-0299P 240-297-0073 COLLEGE PARK ,MD s/d/h
DS2 LLC 47QRAA19D005F 850-307-2781 NICEVILLE ,FL s/dv
DPRA INCORPORATED 47QRAA19D003T 785-564-6041 KNOXVILLE ,TN s
DJ&A, P.C. GS-10F-0288P (406)721-4320 MISSOULA ,MT s/h    
DEWBERRY ENGINEERS INC. GS-00F-280CA 7032086872 FAIRFAX ,VA o
DESERT ARCHAEOLOGY, INC GS-10F-161AA 520-881-2244 TUCSON ,AZ s
DAVEY RESOURCE GROUP, INC. GS-10F-0615N 5088253217 KENT ,OH o
CSRS LLC 47QRAA23D003E 2257690546 BATON ROUGE ,LA o
CSA OCEAN SCIENCES INC. 47QRAA23D004B (772)219-3000 STUART ,FL o    
CRS CONSULTING ENGINEERS, INCORPORATED       47QRAA19D004X (801)939-5565 SALT LAKE CITY ,UT s/d  
CRITIGEN LLC GS-10F-0480X 4254177194 GREENWOOD VILLAGE ,CO o
CORNERSTONE ENVIRONMENTAL CONSULTING, LLC       47QRAA19D0057 928-522-4148 FLAGSTAFF ,AZ s/d
COPPERHEAD ENVIRONMENTAL CONSULTING, INC 47QRAA18D00CR 8599259012 PAINT LICK ,KY s
CONSOLIDATED SAFETY SERVICES INCORPORATED GS-00F-217CA (703) 877-3352 FAIRFAX ,VA o
CONDOR COUNTRY CONSULTING, INC. 47QRAA22D001Q 510-612-8761 MARTINEZ ,CA s/d
CONCURRENT TECHNOLOGIES CORPORATION 47QRAA21D0021 814-269-2871 JOHNSTOWN ,PA o
COMPREHENSIVE ENVIRONMENTAL INC. 47QRAA18D00DM (800)725-2550 BOLTON ,MA s/w/wo/ew/d  
COMMONWEALTH HERITAGE GROUP,INC. GS-00F-261DA 5173206929 DEXTER ,MI s
COMMONWEALTH HERITAGE GROUP,INC. GS-10F-0224P (517)788-3561 DEXTER ,MI s  
COGSTONE RESOURCE MANAGEMENT GS-10F-0463X 714-974-8300 ORANGE ,CA s/w/wo/ew/d/8a
COASTAL ENVIRONMENTS INC GS-10F-0445N 225-383-7455 BATON ROUGE ,LA s
CIRRUS ECOLOGICAL SOLUTIONS, L.C. GS-10F-0164T 4357871490 LOGAN ,UT s
CHLOETA FIRE, L.L.C. GS-10F-049BA 877-245-6382 OKLAHOMA CITY ,OK s/d/8a/h
CATALYST GROUP OF COMPANIES LIMITED LIABILITY COMPANY, THE 47QRAA22D00DA 7327896860 WEST WINDSOR ,NJ s/d
CARDNO GS, INC. GS-00F-196CA 9165487783 CHARLOTTESVILLE ,VA o
CALIBRE SYSTEMS, INC. GS-00F-185CA 7037978500 ALEXANDRIA ,VA o
C. H. GUERNSEY & COMPANY 47QRAA19D00DM 405-416-8155 OKLAHOMA CITY ,OK o
BURLESON CONSULTING, INC. GS-10F-0277R (913)202-7528 SACRAMENTO ,CA s/d  
BROADBENT & ASSOCIATES, INC. 47QRAA20D004L 775-322-7969 EXT. 60 HENDERSON ,NV o
BRATSLAVSKY CONSULTING ENGINEERS, INC. GS-00F-071CA 9072807619 ANCHORAGE ,AK s
BOOZ ALLEN HAMILTON INC.       GS-00F-008DA 7033774359 MCLEAN ,VA o
BOHANNAN-HUSTON, INC. GS-00F-0001Y 505-798-7925 ALBUQUERQUE ,NM o
BIOTOPE FORESTRY & ENVIRONMENTAL, LLC       47QRAA23D004S (828)507-5523 NACOGDOCHES ,TX s/d    
BIORESOURCE CONSULTANTS, INC.       GS-10F-0437X 805-646-9006 OJAI ,CA s/d
BIODIVERSITY RESEARCH INSTITUTE INC GS-10F-226AA 207-839-7600 PORTLAND ,ME o
BHATE ENVIRONMENTAL ASSOCIATES, INC. 47QRAA19D004S 2059184033 BIRMINGHAM ,AL s
BENT EAR SOLUTIONS LLC 47QRAA21D005T 7036557019 ALEXANDRIA ,VA s/v/d
BBJ GROUP LLC GS-10F-0471X 312-219-7769 CHICAGO ,IL s
BB&E, INC. GS-10F-0103N 2484899636 NORTHVILLE ,MI s
BB&E, INC. 47QRAA20D007E 2484899636 NORTHVILLE ,MI s
BATTELLE MEMORIAL INSTITUTE GS-00F-084CA 614-424-3522 COLUMBUS ,OH o
AXIOM CONSULTANTS INC. 47QRAA19D0077 703-599-1502 ROCKVILLE ,MD s/w/wo/ew/d/8a
AVANTI CORPORATION GS-10F-0308P 703-765-0060 ALEXANDRIA ,VA s/w/wo
AVANTI CORPORATION 47QRAA20D002D 703-765-0060 ALEXANDRIA ,VA s/w/wo/ew/d
AVALON BUSINESS ENGINEERING SERVICES, LLC 47QRAA20D003E (801) 447-1623 CLEARFIELD ,UT s/w/wo/ew/dv/d/8a
ATLANTIC GROUP, LLC, THE GS-10F-106AA 256-513-8527 HUNTSVILLE ,AL o
ATKINS NORTH AMERICA, INC. 47QRAA21D002Z 813 281 4430 TAMPA ,FL o
ATCS, P.L.C. GS-10F-0040V 703-817-3544 HERNDON ,VA o
ASPEN ENVIRONMENTAL GROUP 47QRAA22D00EH (818) 597-3407 AGOURA HILLS ,CA s/d
ASM AFFILIATES INC GS-10F-0373N (310) 278-3100 X 701 CARLSBAD ,CA s
ASM AFFILIATES INC 47QRAA19D0092 3102783100 CARLSBAD ,CA s
ASIR, LLC GS-10F-0249X 505-247-9337 ALBUQUERQUE ,NM s
APPLIED MARINE SCIENCES, INC 47QRAA19D005B 925-373-7142 LIVERMORE ,CA s
ANDERSON ENGINEERING OF MINNESOTA, LLC       47QRAA18D006J 763-412-4000 MINNEAPOLIS ,MN s/dv
ANDERSON ENGINEERING & DESIGN, LLC 47QRAA18D00G0 (240)237-8475 LEXINGTON PARK ,MD s/dv  
ALTHOUSE & MEADE INC 47QRAA19D005T (805)237-9626 PASO ROBLES ,CA s/w/wo/d  
ALASKA BIOMAP, INC. 47QSWA19D000K 907-321-2908 JUNEAU ,AK s/w/wo
AEROTECH MAPPING, INC. 47QRAA22D005H 520-561-6537 LAS VEGAS ,NV s/w/wo/d
AERO GRAPHICS, INC GS-35F-423GA 801-487-3273 SOUTH SALT LAKE ,UT s
AERIAL INFORMATION SYSTEMS, INC. GS-00F-170GA 9097939493 REDLANDS ,CA s/w/wo
AECOM TECHNICAL SERVICES, INC. GS-00F-188CA 512-419-5738 LOS ANGELES ,CA o
ADVANCED RESOURCES INTERNATIONAL INC GS-10F-077AA (703)528-8420 ARLINGTON ,VA s  
ADVANCED RESOURCE SOLUTIONS, INC GS-10F-0261S 530-676-1095 SHINGLE SPRINGS ,CA s
ABT ASSOCIATES, INC. GS-00F-252CA 301-347-5093 ROCKVILLE ,MD o
ABR INC 47QRAA20D0010 (907) 455-6777 EXT. FAIRBANKS ,AK s
A.I.S., INC. GS-10F-0131T 508-990-9054 DARTMOUTH ,MA s
A E H S INCORPORATED GS-10F-0227R 2106569300 SAN ANTONIO ,TX s
1SPATIAL INC. GS-10F-0291U 5126945416 VIENNA ,VA o