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MAS Multiple Award Schedule
Professional Services - Environmental Services
Category Description
541620 Environmental Consulting Services Services include providing advice and assistance to businesses and other organizations on environmental issues, such as the control of environmental contamination from pollutants, toxic substances, and hazardous materials; Endangered species, wetland, watershed, and other natural resource management plans; Archeological and/or cultural resource management plans. This includes identifying problems (e.g., inspect buildings for hazardous materials), measure and evaluate risks, and recommend solutions. multi disciplined staff of scientists, engineers, and other technicians with expertise in areas, such as air and water quality, asbestos contamination, remediation, ecological restoration, and environmental law such as Planning and Documentation Services for the development, planning, facilitation, coordination, and documentation of and/or for environmental initiatives (or mandates such as Executive Order 13693 in areas of chemical, radiological, and/or hazardous materials; ISO 14001 Environmental Management System (EMS) and sustainable performance measure development; Environmental Assessment (EA) and Environmental Impact Statement (EIS) preparation under the National Environmental Policy Act (NEPA).
569 contractors

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Contractor       Contract # Phone City, State Socio-
Economic		 Contractor T&Cs
/Pricelist		 View Catalog
ZIA ENGINEERING & ENVIRONMENTAL CONSULTANTS, L.L.C. GS-10F-0391N 575-680-2337 LAS CRUCES ,NM s/d
ZEPHYR ENVIRONMENTAL CORP GS-00F-008GA 512-879-6639 AUSTIN ,TX s
XCEL ENGINEERING, INC. GS-10F-0211P 865-481-3200 OAK RIDGE ,TN s/dv
WSP USA SOLUTIONS INC. 47QRAA18D002R 202-303-2613 WASHINGTON ,DC o
WSP USA INC. 47QRAA19D003Q (212)465-5023 NEW YORK ,NY o  
WOOLPERT, INC. GS-00F-0038N 937-531-1309 DAYTON ,OH o
WOODS CANYON ARCHAEOLOGICAL CONSULTANTS INC GS-10F-0446Y (970)562-4884 CORTEZ ,CO s  
WOODARD & CURRAN, INC. GS-10F-0086M 800.426.4262 PORTLAND ,ME o
WOOD ENVIRONMENT & INFRASTRUCTURE SOLUTIONS, INC. GS-00F-314CA (610)877-6109 BLUE BELL ,PA o  
WINDJAMMER ENVIRONMENTAL LLC GS-00F-180GA (314)324-6042 OXON HILL ,MD s/d/8a  
WILDLIFE SPECIALISTS, LLC GS-10F-231AA 5704396898 WELLSBORO ,PA s
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. 47QRAA19D00BT 7039697418 ALBUQUERQUE ,NM o
WESTMARK GROUP, INC., THE GS-10F-0215X (702) 839-2960 EAGLE ,ID s/v/d/8a
WESTERN ECOSYSTEMS TECHNOLOGY, INC.       GS-10F-072BA (307)634-1756 CHEYENNE ,WY o  
WEST KERN ENVIRONMENTAL CONSULTING, LLC GS-00F-408GA 8009301980 BAKERSFIELD ,CA s/w/wo/ew/d/8a
WENCK ASSOCIATES, INC. GS-10F-0220W 678-987-5854 MAPLE PLAIN ,MN s
WCP INC. GS-10F-0127U (808)596-4688 HONOLULU ,HI s/h  
WATER, CIVIL, AND ENVIRONMENTAL INCORPORATED GS-00F-386GA (208) 319-9744 BOISE ,ID s/w/wo/ew/d/8a
WATER & AIR RESEARCH, INC. GS-10F-0358N 352-372-1500 GAINESVILLE ,FL s
VM3 ENVIRONMENTAL, INC. GS-00F-190DA (760)273-9728 CARLSBAD ,CA s  
VISTA SCIENCES CORPORATION 47QRAA18D009E 575-526-9558 LAS CRUCES ,NM s/d
VISION PLANNING & CONSULTING, LLC 47QRAA19D000L (240)893-8719 FULTON ,MD s/w/wo/ew/d/8a  
VERSAR, INC. 47QRAA18D00F7 703-642-6793 SPRINGFIELD ,VA o
VERNADERO GROUP INCORPORATED GS-10F-0033T 4803151000 PHOENIX ,AZ s/v
VANASSE HANGEN BRUSTLIN INC GS-00F-116CA 804-441-7439 WILLIAMSBURG ,VA o
USFIN DEVELOPMENT, LLC GS-10F-0310X 2524239901 SOUTHERN SHORES ,NC s/dv/d/h
UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL 47QRAA18D00CA 919-966-3411 CHAPEL HILL ,NC o
UNIVERSAL SOLUTIONS, INC. GS-00F-315GA (813)639-1241 TAMPA ,FL s/d  
UNIFIED BUSINESS TECHNOLOGIES, INC. GS-10F-0230X 248-588-1781 TROY ,MI s/w/wo/ew/d
TTL ASSOCIATES, INC. GS-10F-0255U 419-324-2222 TOLEDO ,OH s/dv
TRINITY ENGINEERING ASSOCIATES, INC. GS-10F-0306P (513) 620-7115 CINCINNATI ,OH s/wo/ew/8a
TRINITY CONSULTANTS, INC.       GS-10F-0256N (972)661-8100 DALLAS ,TX o  
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
TRC ENVIRONMENTAL CORPORATION GS-10F-0401M (978)656-3620 WINDSOR ,CT o  
TRANSYSTEMS CORPORATION 47QRAA19D001C 510-835-9898 KANSAS CITY ,MO o
TRANSCON ENVIRONMENTAL INC.       GS-10F-0192M (480)807-0095 MESA ,AZ s/d  
TOTAL ENVIRONMENTAL CONCEPTS, INC. GS-10F-0270V 301-548-0382 GAITHERSBURG ,MD s
TOEROEK ASSOCIATES, INC. GS-00F-055CA (303) 420-7735 LAKEWOOD ,CO s
TNT ENVIRONMENTAL, INC. 47QRAA18D00CD 703-466-5123 CHANTILLY ,VA s
TLI SOLUTIONS, INC. GS-10F-0343S 7038183233 CHANTILLY ,VA o
TK&K SERVICES, L.L.C. 47QRAA20D008E 6174481668 ALPHARETTA ,GA s/dv
TITAN ENVIRONMENTAL SOLUTIONS, INC 47QRAA20D003Q 714-860-8965 FULLERTON ,CA s/d/8a
TIERRA RIGHT OF WAY SERVICES, LTD. GS-10F-0038T 520-319-2106 TUCSON ,AZ o
TIDEWATER, INC. GS-10F-0260R 410-540-8700 ELKRIDGE ,MD o
THRIVAL COMPANY LLC, THE 47QRAA18D009X 208-991-8264 AUSTIN ,TX s/w/wo/d
TEXAS A&M AGRILIFE RESEARCH GS-00F-059GA (301)913-5000 COLLEGE STATION ,TX 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    
TERRANEXT, LLC 47QRAA21D004Y (303)399-6145 DENVER ,CO s/w/wo/ew/d    
TERRANEXT, LLC GS-10F-0320L 303-399-6145 DENVER ,CO s/w/wo/ew/d
TERRANEAR PMC LLC GS-00F-322CA (832)265-4900 EXTON ,PA s/d  
TERRACON CONSULTANTS, INC. 47QRAA20D0065 (301)913-5000 OLATHE ,KS o    
TERRA SOLUTIONS & SERVICES, INC. 47QRAA19D00AV (859)392-0425 HERLONG ,CA s/d/8a  
TELLEVATE, LLC GS-00F-245GA 4045385494 DECATUR ,GA s
TELEDYNE BROWN ENGINEERING, INC. GS-00F-155CA 2567261211 HUNTSVILLE ,AL o
TEHAMA, LLC       47QRAA18D00A4 816-678-7510 KANSAS CITY ,MO s/d/8a
TECTONIC ENGINEERING CONSULTANTS, GEOLOGISTS & LAND SURVEYORS, D.P.C. GS-00F-015BA 1-845-534-5959 MOUNTAINVILLE ,NY o
TECHNICAL RESOURCES INTERNATIONAL, INC. GS-00F-274CA (301) 564-6400 BETHESDA ,MD o
TECHNICAL RESOURCES GROUP INC GS-10F-0300W 208-528-8895 IDAHO FALLS ,ID s/w
TECHLAW, INC. 47QSWA18D008B 7038183233 CHANTILLY ,VA s
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
SUSTAINMENT AND RESTORATION SERVICES, LLC 47QRAA18D00FN 414-257-4200 MILWAUKEE ,WI s/d/8a
SUSTAINABLE RESOURCES GROUP INTN'L, INC. GS-10F-0373L 8083560552 KAILUA ,HI s/w/wo
SURF TO SNOW ENVIRONMENTAL RESOURCE MANAGEMENT, INC. 47QRAA21D000B 925-362-3114 SAN RAMON ,CA s/dv/d
SUNDANCE CONSULTING, INC.       47QRAA18D00AS 619-333-3960 POCATELLO ,ID s/w/wo/d
STREET LEGAL INDUSTRIES, INC 47QRAA19D00A7 865-483-6373 OAK RIDGE ,TN s/w/wo/ew/d/8a/h
STRAUGHAN ENVIRONMENTAL, INC. GS-10F-014CA 4435392535 COLUMBIA ,MD s/w/wo/ew/d
STRATA G, LLC GS-00F-004CA 8659343400 KNOXVILLE ,TN o
STILLWATER ECOSYSTEM, WATERSHED & RIVERINE SCIENCES GS-10F-0216S 5108488098 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 5713532020 LONG BEACH ,CA o
STATISTICAL RESEARCH, INC. GS-10F-0396P 1-520-721-4309 TUCSON ,AZ s/w/wo/ew
STANTEC CONSULTING SERVICES INC. 47QRAA19D000Q 916-418-8338 BROOMFIELD ,CO o
SRC, INC. 47QRAA19D005N 315-452-8165 NORTH SYRACUSE ,NY o
SRA INTERNATIONAL, INC. GS-00F-256CA (703) 995-3733 CHANTILLY ,VA o
SPECTRUM SERVICES GROUP, INC. GS-10F-237AA (916)208-1600 SACRAMENTO ,CA s/d/8a/h  
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
SOUTHWEST HAZARD CONTROL, INC. GS-10F-115BA 5206223607 TUCSON ,AZ s/w/d
SOUTHEASTERN ARCHAEOLOGICAL RESEARCH INC GS-10F-0255Y 352-333-0049 ORLANDO ,FL s/w/wo
SOURCE ENVIRONMENTAL, INC. 47QRAA20D000C 303-333-8521 DENVER ,CO s/w/wo
SOURCE ENVIRONMENTAL, INC.
(DBA: AET ENVIRONMENTAL) 		GS-10F-0361L 303-333-8521 DENVER ,CO s/w/wo/ew
SONOMA TECHNOLOGY, INC. 47QRAA18D00D1 707-665-9900 PETALUMA ,CA s
SOLV LLC 47QRAA18D00DH 7037604801 MC LEAN ,VA s
SOLUTION FOUNDRY, LLC, THE       GS-10F-0250U (770)517-1517 WOODSTOCK ,GA s  
SOLUTIENT TECHNOLOGIES, LLC 47QRAA18D008Q 3304975905 NORTH CANTON ,OH s/d
SOLANO ARCHAEOLOGICAL SERVICES LLC
(DBA: SOLANO ARCHAEOLOGICAL SERVICES) 		GS-10F-0342T (707)718-1416 DIXON ,CA s  
SOL SOLUTIONS, LLC 47QRAA18D00AF 480-544-7045 SCOTTSDALE ,AZ s/v/d/8a
SOL ENGINEERING SERVICES, LLC GS-00F-223GA 601-961-1415 JACKSON ,MS s/d/h
SOIL AND LAND USE TECHNOLOGY, INC.
(DBA: TLB ASSOCIATES) 		GS-10F-0072T 301-595-3783 WASHINGTON ,DC s
SKEO SOLUTIONS , INC. 47QRAA20D0027 434-975-6700 CHARLOTTESVILLE ,VA s
SKEO SOLUTIONS , INC. GS-10F-0309N 434-226-4284 CHARLOTTESVILLE ,VA s
SIGNATURE SCIENCE, LLC GS-00F-105CA (877) 474-4724 AUSTIN ,TX o
SHIPLEY GROUP, INC., THE 47QRAA19D00CF 888-270-2157 FARMINGTON ,UT s
SES, INC. GS-10F-0460M 9133070046 LENEXA ,KS s
SERES ENGINEERING & SERVICES LLC 47QRAA18D00ES (843) 216-8531 CHARLESTON ,SC s/d/8a
SEQUOIA ECOLOGICAL CONSULTING, INC. 47QRAA18D0024 925-989-7011 DANVILLE ,CA s/w/wo/ew/d
SECURIFENSE, INC.       GS-00F-186GA 412-973-9998 HENDERSONVILLE ,NC s/dv
S2O DESIGN AND ENGINEERING 47QRAA19D006R (866)916-6484 LYONS ,CO s/d  
S.S. PAPADOPULOS & ASSOCIATES, INC. GS-10F-0462M 3017188900 ROCKVILLE ,MD s
S P CRAMER & ASSOCIATES INC 47QRAA19D0045 503-850-9024 PORTLAND ,OR s
S C & A, INC. 47QRAA20D002W 7038936600 ARLINGTON ,VA s
RUTH VILLALOBOS & ASSOCIATES, INC. GS-00F-432GA (909)245-1140 ALTA LOMA ,CA s/w/wo/d  
RURAL COMMUNITY ASSISTANCE CORPORATION GS-10F-0255X 9167081896 WEST SACRAMENTO ,CA o
RURAL AND TRIBAL ENVIRONMENTAL SOLUTIONS GS-10F-0257R (406)491-2521 BILLINGS ,MT s/w/wo  
RPS GROUP, INC. GS-10F-0438R (401)789-6224 HOUSTON ,TX o  
ROSS & ASSOCIATES ENVIRONMENTAL CONSULTING, LTD. GS-00F-0045P 2064471805 SEATTLE ,WA s
ROMEM AQUA SYSTEMS COMPANY, INC 47QRAA20D005A 7036432952 WOODBRIDGE ,VA s/dv
ROBINSON AND NOBLE, INC. GS-10F-010CA 253.475.7711 TACOMA ,WA s
ROBERT AND COMPANY GS-00F-210GA 4045774000 ATLANTA ,GA s/dv
RMEC ENVIRONMENTAL INC GS-10F-0147P 8014673661 SALT LAKE CITY ,UT s
RIVERSIDE TECHNOLOGY, INC. GS-00F-0026P 9702149419 FORT COLLINS ,CO o
RICHARD GRUBB & ASSOCIATES, INC. GS-00F-057DA 609-655-0692 CRANBURY ,NJ s/w/wo/ew
RHITHRON ASSOCIATES, INC. GS-10F-0138V 4067211977 MISSOULA ,MT s/w
RHEA ENGINEERS & CONSULTANTS, INC. 47QRAA20D0051 724-443-4111 VALENCIA ,PA s/w/wo
RESPEC COMPANY, LLC GS-00F-0078N (605)394-6507 RAPID CITY ,SD o  
RESOURCE RECYCLING SYSTEMS, INCORPORATED GS-10F-038CA (734)996-1361 ANN ARBOR ,MI s/d  
RESOURCE MANAGEMENT CONCEPTS INC GS-00F-005CA 301-862-7501 LEXINGTON PARK ,MD o
RESOURCE & ENVIRONMENTAL MANAGEMENT CONSULTANTS, INC. GS-10F-0014W 801-255-2626 MIDVALE ,UT s/w/wo
RESEARCH TRIANGLE INSTITUTE GS-00F-354CA 919-541-6543 RESEARCH TRIANGLE P ,NC o
RESEARCH PLANNING, INC. 47QRAA19D003K 803-256-7322 COLUMBIA ,SC s/w/wo
RESEARCH PLANNING, INC. GS-10F-0082N 803 256-7322 COLUMBIA ,SC s/w
RESEARCH MANAGEMENT CONSULTANTS INC. GS-10F-0071M 303-277-0066, EXT 22 GOLDEN ,CO s/w/wo
RENOVA ENVIRONMENTAL SERVICES LIMITED LIABILITY COMPANY 47QRAA20D005N 732-659-1000 OCEAN ,NJ s/d/8a/h
REDHORSE CORPORATION       GS-00F-0013Y 619-241-4609 SAN DIEGO ,CA o
REDHORSE CORPORATION GS-07F-134GA 619-241-4609 SAN DIEGO ,CA s/dv/d/8a
RED J ENVIRONMENTAL CORPORATION GS-10F-0246T (928)288-3239 JOSEPH CITY ,AZ s/h  
RECON ENVIRONMENTAL GS-10F-0339M 6193089333 SAN DIEGO ,CA s
RAVEN ENVIRONMENTAL SERVICES, INC. GS-00F-264DA 936-291-0946 HUNTSVILLE ,TX s
R2T, INC. GS-00F-129GA (770)569-7038 ATLANTA ,GA s/w/wo/ew/d  
R. CHRISTOPHER GOODWIN & ASSOCIATES, INC. 47QRAA20D002Q 301-694-0428 NEW ORLEANS ,LA s
QUATERNARY RESOURCE INVESTIGATIONS, L.L.C. GS-10F-105BA 2252921400 BATON ROUGE ,LA s/w/wo/ew/d
QUANTUM ENVIRONMENTAL & ENGINEERING SERVICES, LLC GS-10F-0405Y (865)689-1395 KNOXVILLE ,TN s  
QUANTECH, INC. 47QRAA18D00CZ 2403972993 ROCKVILLE ,MD s
PYRAMID ENVIRONMENTAL AND ENGINEERING, P.C. GS-10F-0403N 336-335-3174 GREENSBORO ,NC s
PURE AIR CONTROL SERVICES, INC. GS-10F-0488R 7275724550 CLEARWATER ,FL s
PUBLIC ARCHAEOLOGY LABORATORY, INCORPORATED, THE GS-10F-0032S 401-728-8780 PAWTUCKET ,RI o
PRUDENT TECHNOLOGIES, INC. GS-10F-0176Y (816)363-3703 KANSAS CITY ,MO s/d  
PROSPECTIVE TECHNOLOGY, INC. GS-10F-0350S (410) 381-0035 MARRIOTTSVILLE ,MD s/d
PROJECT TIME & COST, LLC 47QRAA19D003A 7702000192 ATLANTA ,GA s
PROJECT ENHANCEMENT CORPORATION       GS-00F-0004T 240-686-3059 GERMANTOWN ,MD s
PROJECT ENGINEERING CONSULTANTS INC. 47QRAA18D00FF (801)858-3336 WEST JORDAN ,UT s/d  
PROFESSIONAL PROJECT SERVICES, INC. GS-00F-112CA 865.220.4377 OAK RIDGE ,TN s
PROFESSIONAL ENVIRONMENTAL ENGINEERS, INC. GS-10F-200BA 314-531-0060 SAINT LOUIS ,MO s/w
PRESTIGE ENVIRONMENTAL INC GS-10F-0166T 908-757-9700 SOMERSET ,NJ s
POTOMACWAVE CONSULTING, INC. GS-00F-0007X 703-963-5064 ALEXANDRIA ,VA o
POTOMAC-HUDSON ENGINEERING, INC. 47QRAA18D0074 3019079078 ROCKVILLE ,MD s
PORTAGE, INC. GS-00F-262CA (208)419-4152 IDAHO FALLS ,ID s  
PLEXUS SCIENTIFIC CORPORATION 47QRAA19D00BK 571-527-1214 ALEXANDRIA ,VA s
PIONEER TECHNICAL SERVICES, INC. GS-10F-050AA 406-497-8057 BUTTE ,MT s
PINYON ENVIRONMENTAL, INC. GS-10F-0298N 303.984.0257 LAKEWOOD ,CO s/w
PIKA INTERNATIONAL, INC. GS-10F-0202U 2813405525 STAFFORD ,TX s/d
PHASE ASSOCIATES, LLC 47QRAA20D007Z 973-808-4888 LIVINGSTON ,NJ s/w
PG ENVIRONMENTAL, LLC GS-10F-0210U 7207898033 CHANTILLY ,VA o
PETERSON, KATHRYN 47QRAA18D008H 909-630-8279 AGUANGA ,CA s/w/wo
PERSPECTA SERVICES & SOLUTIONS INC. GS-00F-296CA 571-521-7776 HERNDON ,VA o
PERIKIN ENTERPRISES, LLC GS-00F-003AA 505-333-0501 ALBUQUERQUE ,NM s/d/8a/h
PCCI, INC. 47QRAA18D00HE 703-229-1110 ALEXANDRIA ,VA o
PC TRASK AND ASSOCIATES INC. 47QRAA19D000H 503.517.2490 PORTLAND ,OR s
PBS ENGINEERING AND ENVIRONMENTAL INC. 47QRAA21D0001 (503)248-1939 PORTLAND ,OR o    
PARTNER ASSESSMENT CORPORATION 47QRAA18D00EE 7738405070 TORRANCE ,CA o
PARSONS GOVERNMENT SERVICES INC. 47QRAA19D000A (210) 477-1616 PASADENA ,CA o
PARS ENVIRONMENTAL INC. GS-10F-0094W 609-890-7277 ROBBINSVILLE ,NJ o
PARAMETRIX, INC. GS-10F-0013N (253)863-5128 PUYALLUP ,WA o  
PARAGON PROFESSIONAL SERVICES LLC 47QRAA19D007B 907-334-8311 ANCHORAGE ,AK s/d/8a
PARADIGM ENVIRONMENTAL 47QRAA18D003K 7039571908 OAKTON ,VA s
PANORAMA ENVIRONMENTAL, INC. 47QRAA20D0091 858-349-8883 SAN FRANCISCO ,CA s/w/wo/ew/d
PANAMERICAN CONSULTANTS, INC. GS-10F-0196P 2052488767 TUSCALOOSA ,AL s
PALEOWEST, L.L.C.       GS-10F-0116V 602-261-7253 PHOENIX ,AZ s
PACIFIC WESTERN TECHNOLOGIES, LTD. GS-00F-0002M (303)274-5400 WHEAT RIDGE ,CO s/w/d  
PACIFIC WATERSHED ASSOCIATES INC GS-10F-0244V (707)839-5130 MCKINLEYVILLE ,CA s  
PACE ENGINEERS INC GS-10F-023AA (425)827-2014 KIRKLAND ,WA s  
OTTERY GROUP, INC., THE GS-10F-0061X 2402747710 KENSINGTON ,MD s
OTIS BAY, INC. GS-10F-0331Y (775)345-9960 VERDI ,NV s  
OTAK, INC. GS-10F-0401X 503-287-6825 PORTLAND ,OR o
ORION ENVIRONMENTAL, INC. 47QRAA21D000V 562-988-2755 LONG BEACH ,CA s
OPES, INC GS-10F-185AA (405)360-2911 NORMAN ,OK s/h  
ONEIDA TOTAL INTEGRATED ENTERPRISES, LLC 47QRAA20D009B 414-257-4200 MILWAUKEE ,WI s/d
OHIO VALLEY ARCHAEOLOGY, INC. GS-10F-172BA (614) 436-6926 COLUMBUS ,OH s/w/wo/d
OCEAN ASSOCIATES, INCORPORATED GS-10F-0567P 703-388-9548 ARLINGTON ,VA s/w/wo
OCCU-TEC, INCORPORATED GS-10F-0091T 8162315580 KANSAS CITY ,MO s
OAK RIDGE ASSOCIATED UNIVERSITIES, INCORPORATED GS-00F-195CA (865) 574-7759 OAK RIDGE ,TN o
O'BRIEN & GERE ENGINEERS, INC. 47QRAA20D0074 2482258513 SYRACUSE ,NY o
NUTTER & ASSOCIATES, INC. 47QRAA19D009B 706-354-7925 ATHENS ,GA s/h
NUTRIEN AG SOLUTIONS, INC. GS-10F-0066W (970)685-3592 LOVELAND ,CO o  
NUKA RESEARCH AND PLANNING GROUP, LLC GS-10F-164AA (508)454-4009 SELDOVIA ,AK s/h  
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
NORTECH, INC. GS-10F-0150R (907) 452-5688 FAIRBANKS ,AK s
NORMANDEAU ASSOCIATES INC GS-10F-0319M 603-637-1115 BEDFORD ,NH o
NOREAS, INC. GS-00F-373GA 714-955-3120 IRVINE ,CA s/d/8a
NODI SOLUTIONS LLC 47QRAA18D00GK 5712335916 ROCKVILLE ,MD s/w/wo
NOBLIS, INC. GS-00F-096DA (703) 610-2290 RESTON ,VA o
NICHOLS CONSULTING ENGINEERS, CHTD. 47QRAA18D008A 7753294955 RENO ,NV s
NEXGEN TECHNOLOGIES, INC. GS-10F-0270W 720-377-1800 LAKEWOOD ,CO s
NEW SOUTH ASSOCIATES, INC. GS-10F-0230N 7704984155 STONE MOUNTAIN ,GA s/w/wo/ew
NEVADA SYSTEM OF HIGHER EDUCATION
(DBA: DESERT RESEARCH INSTITUTE) 		47QRAA20D000B 7028625593 RENO ,NV o
NELSON ENGINEERING CO. GS-00F-324CA 3214491128 MERRITT ISLAND ,FL s
NAVARRO RESEARCH AND ENGINEERING, INC. GS-00F-0092N 865-220-9650 OAK RIDGE ,TN s/w/wo/d
NATURES IMAGE, INC. GS-10F-045BA 9496804400 LAKE FOREST ,CA s/w/wo
NATURAL RESOURCE INNOVATIONS GMBH 47QRAA19D002P (622)510-694 HEIDELBERG ,
GERMANY 		s    
NATIVE-X, INC. ARCHAEOLOGICAL SERVICES GS-10F-0174U 7755600808 LINCOLN ,CA s/v
MXI ENVIRONMENTAL SERVICES LLC GS-10F-0013Y (267)590-0043 ABINGDON ,VA s  
MUSTARDSEED CULTURAL AND ENVIRONMENTAL SERVICES, LLC GS-10F-0009U 8163332424 KANSAS CITY ,MO s/w/d
MUNIREM ENVIRONMENTAL, LLC GS-00F-161GA 706-316-3525 DULUTH ,GA s/d
MSE GROUP, LLC GS-10F-0469Y 855-629-8180 SAN ANTONIO ,TX s
MIRACORP, INC. GS-10F-233AA 571-589-8970 MESA ,AZ s/w/wo/ew/dv/d
MIDWEST ASSISTANCE PROGRAM, INC. GS-10F-0025T 6605622575 MARYVILLE ,MO o
MID ATLANTIC SOLID WASTE CONSULTANTS, LLC GS-00F-275GA 407-380-8951 ORLANDO ,FL s
MICHAEL BAKER INTERNATIONAL, INC. GS-00F-0032M 703-483-0029 ALEXANDRIA ,VA o
MERKEL & ASSOCIATES, INC. GS-10F-0060T 858-560-5465 SAN DIEGO ,CA s/w
MECX, INC. GS-10F-0328R 713-585-7000 HOUSTON ,TX s/dv
MECA CONSULTING, INC. GS-10F-0229U 9258086700 OAKLAND ,CA s
MEAD AND HUNT, INC. GS-00F-230DA (906)629-1360 MIDDLETON ,WI o  
MDB, INC. 47QRAA20D0028 202-331-0060 WASHINGTON ,DC s
MDB, INC. GS-00F-0001S 202-331-0060 WASHINGTON ,DC s
MC CONSULTING, INC GS-10F-0226M (630)887-0922 WESTMONT ,IL s/d  
MAXXIMUS ENVIRONMENTAL, INC GS-10F-0180X 7032170153 ROCKVILLE ,MD s/d
MATRIX NEW WORLD ENGINEERING, INC. GS-10F-0477M (973)240-1800 FLORHAM PARK ,NJ s/w/d  
MATRIX ENVIRONMENTAL SERVICES LLC GS-00F-057GA (303)572-0200 DENVER ,CO s  
MATRIX DESIGN GROUP, INC. 47QRAA19D009K 5719690495 COLORADO SPRINGS ,CO o
MASON BRUCE & GIRARD INC GS-10F-0295M 5032243445 PORTLAND ,OR s/d
MARSTEL-DAY, LLC GS-00F-070CA 7038395512 FREDERICKSBURG ,VA s/w/wo/h
MARSH & ASSOCIATES LLC       GS-10F-0085V 480-459-7864 TEMPE ,AZ s
MARINE TAXONOMIC SERVICES LTD 47QRAA21D000T 7604108392 SAN MARCOS ,CA 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
MABBETT & ASSOCIATES, INC. GS-10F-0120T 781-275-6050 STONEHAM ,MA s/dv
M B TECHNICAL SERVICES       GS-00F-028GA (562)426-3453 LONG BEACH ,CA s/d/8a  
LYNKER TECHNOLOGIES LLC GS-00F-125CA 7034315855 LEESBURG ,VA o
LRS FEDERAL LLC GS-10F-0360T (410) 544-3570 SEVERNA PARK ,MD s/dv
LPES, INC GS-10F-204BA (757)357-0730 SMITHFIELD ,VA s  
LOW IMPACT DEVELOPMENT CENTER (LID), INC.       GS-10F-0084N 3019825559 BELTSVILLE ,MD o
LOS ALAMOS TECHNICAL ASSOCIATES, INC. GS-10F-0017V (505)880-3495 ALBUQUERQUE ,NM s  
LOGISTICS MANAGEMENT INSTITUTE       GS-00F-0026M (703)917-7524 TYSONS ,VA o  
LOGISTICS MANAGEMENT INSTITUTE       GS-00F-041GA (703)917-7524 TYSONS ,VA o  
LOGAN SIMPSON DESIGN INC. GS-10F-0063P (480)967-1343 TEMPE ,AZ o  
LJB INC GS-00F-049CA 937-259-5000 MIAMISBURG ,OH o
LINK TECHNOLOGIES INC 47QRAA20D0096 301-983-6878 GERMANTOWN ,MD s/w/wo
LINEBACH FUNKHOUSER INC 47QRAA18D0035 502-895-5009 LOUISVILLE ,KY s
LINDAHL REED, INC. 47QRAA18D00GR 541/638-9264 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
LEW CORPORATION 47QRAA18D002A 336-887-1328 MINE HILL ,NJ s
LEIDOS, INC. GS-00F-022CA (571) 526-7305 RESTON ,VA o
LEGEND TECHNICAL SERVICES, INC. GS-10F-0371R 651-221-4085 SAINT PAUL ,MN s/w
LCA ENVIRONMENTAL INC GS-00F-075GA 972-241-6680 DALLAS ,TX s/w/wo/ew/d
LARSON DESIGN GROUP, INC. 47QRAA19D00CU 412-528-0525 WILLIAMSPORT ,PA o
L S A ASSOCIATES, INC. 47QRAA18D009Y 949-553-0666 IRVINE ,CA o
KMPOWER CONSULTING LLC GS-10F-102AA (303)710-0876 GREELEY ,CO s/w/wo  
KMEA 47QRAA20D006G 619-787-0515 NATIONAL CITY ,CA o
KLEINSCHMIDT ASSOCIATES 47QRAA18D005P 717-576-6518 PITTSFIELD ,ME o
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
KERES CONSULTING, INC. GS-00F-154CA 505 8372104 ALBUQUERQUE ,NM s/d
KENIFIC GROUP INC, THE 47QRAA19D00C7 571-636-4002 FAIRFAX ,VA s/d
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KELLER-BLIESNER ENGINEERING, LLC       47QRAA18D004Q 435-753-5651 LOGAN ,UT s
KAPUR ENERGY ENVIRONMENT ECONOMICS, LLC 47QSHA20D000W 434-295-3018 CHARLOTTESVILLE ,VA s/w/wo/ew/d
KANE ENVIRONMENTAL, INC. GS-10F-0061W 2066910476 SEATTLE ,WA s
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JOHNSON COMPANY, INC. THE GS-10F-0481P (802)229-4600 MONTPELIER ,VT s  
JENSEN HUGHES, INC. GS-00F-006CA 925-208-0943 BALTIMORE ,MD o
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JE FULLER/HYDROLOGY AND GEOMORPHOLOGY, INC. GS-00F-079GA (937)244-9035 TEMPE ,AZ s  
JARDON & HOWARD TECHNOLOGIES, INCORPORATED GS-00F-0059M 407-381-7797 ORLANDO ,FL o
JACOBS ENGINEERING GROUP INC. GS-00F-0025M (571) 218-1304 ARLINGTON ,VA o
J.G. MANAGEMENT SYSTEMS, INC. GS-00F-0014Y 970-254-1354 GRAND JUNCTION ,CO s/d/8a
J&M GLOBAL SOLUTIONS LLC GS-10F-0374X 5719706690 ALEXANDRIA ,VA s/w/wo/ew
J W ASSOCIATES INC GS-10F-0108S 970-406-0085 BRECKENRIDGE ,CO s/w/wo/d
INTERNATIONAL BUSINESS SALES & SERVICES CORPORATION 47QRAA18D0099 301.942.9016 SILVER SPRING ,MD s/w/wo/ew/d
INTEGRATED STATISTICS INCORPORATED GS-10F-0395N 5085408560 WOODS HOLE ,MA s/w/wo
INTEGRA GOVERNMENT SERVICES INTERNATIONAL LLC GS-10F-083CA 202-898-4110 WASHINGTON ,DC s/dv
INSIGNIA ENVIRONMENTAL 47QRAA20D005U 650-321-6787 MENLO PARK ,CA s/w/wo
INDUSTRIAL HYGIENE RESOURCES, LTD GS-10F-0176R 2083238287 BOISE ,ID s
INDUSTRIAL ECONOMICS, INCORPORATED 47QRAA20D0044 (617) 354-0074 CAMBRIDGE ,MA o
INDUSTRIAL ECONOMICS, INCORPORATED GS-10F-0061N (617) 354-0074 CAMBRIDGE ,MA o
ICF INCORPORATED, L.L.C. GS-00F-010CA 703-934-3632 FAIRFAX ,VA o
IAP WORLD SERVICES INC GS-35F-407GA 321-784-7113 CAPE CANAVERAL ,FL o
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HZW ENVIRONMENTAL CONSULTANTS, LLC       47QRAA19D00C6 330-208-2717 MENTOR ,OH s/w/wo
HYDROSOLUTIONS INC GS-10F-0172X 4064436169 HELENA ,MT s/dv
HYDROS CONSULTING INC. GS-10F-220BA (303)284-1841 BOULDER ,CO s  
HYDROGEOLOGIC, INC. 47QRAA18D00CW 7037364551 RESTON ,VA s
HUNTER RESEARCH, INC GS-10F-018AA 609-695-0122 X 100 TRENTON ,NJ s
HSG, LLC GS-10F-230BA 702-271-4673 LAS VEGAS ,NV s/w/wo/ew/d
HOWER CONSULTING GROUP, INC. GS-10F-0023V 8006835145 SAN DIEGO ,CA s/dv
HORSLEY WITTEN GROUP, INC. GS-10F-0304T 508-833-6600 SANDWICH ,MA s
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HELIX ENVIRONMENTAL PLANNING, INC. GS-10F-0020V 619.462.1515 LA MESA ,CA o
HEALTHY HOUSING SOLUTIONS, INC. 47QRAA18D00H1 443-539-4152 COLUMBIA ,MD s
HEALTHY BUILDINGS INTERNATIONAL (VA), INC. 47QRAA20D0011 703-323-4400 FAIRFAX ,VA s
HDR ENGINEERING, INC. GS-00F-152CA 303-754-4252 OMAHA ,NE o
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HAZAIR, INC. GS-10F-114CA (505)504-4753 LAS VEGAS ,NV s/dv/d/8a  
HAWKS ALOFT INC GS-10F-0191T (505)828-9455 ALBUQUERQUE ,NM o  
HARTGEN ARCHEOLOGICAL ASSOCIATES INC GS-10F-0424Y 518.283.0534 RENSSELAER ,NY s
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HARBOR ENVIRONMENTAL, INC. 47QRAA21D001J 5016638800 LITTLE ROCK ,AR s/w/wo/ew/d
HAMER ENVIRONMENTAL L.P. GS-10F-087AA (360)899-5156 MOUNT VERNON ,WA s  
H R A INC GS-10F-0045T (702)228-8844 CEDAR CITY ,UT s/w/wo  
GULF SOUTH RESEARCH CORPORATION 47QRAA19D006W 2257578088 BATON ROUGE ,LA s/w/wo/ew/d
GSI NORTH AMERICA INC. 47QRAA19D002Z (808)349-3178 FLEMINGTON ,NJ s/d/8a  
GSI ENVIRONMENTAL INC. 47QRAA18D009N 5123464474 HOUSTON ,TX o
GSE, INC. 47QRAA18D008P 256-350-9754 TRINITY ,AL s/w/wo/d
GS GROUP LLC GS-00F-162GA 313-279-0449 DETROIT ,MI s/w/wo/ew/d/8a/h
GRYPHON ENVIRONMENTAL, LLC GS-10F-144BA 719-578-3330 COLORADO SPRINGS ,CO s/dv
GREENMAN-PEDERSEN, INC. 47QRAA21D004M 518-209-4823 BABYLON ,NY o
GREENMAN-PEDERSEN, INC. GS-23F-0032S 518-209-4823 BABYLON ,NY o
GREEN STREET ENVIRONMENTAL, LLC 47QRAA18D000N (202)234-8933 BALTIMORE ,MD s  
GREEN REVIEWS INC 47QRAA19D0004 2013461776 LEONIA ,NJ s/w/wo/ew
GREEN AND SUSTAINABLE SERVICES, LLC 47QRAA19D0015 940-597-3723 PONDER ,TX s/w/wo/ew
GREAT LAKES ENVIRONMENTAL CENTER, INC. GS-10F-015AA 231-941-2230 TRAVERSE CITY ,MI s
GREAT ECOLOGY & ENVIRONMENTS, INC. GS-10F-148AA (212)579-6800 SAN DIEGO ,CA s  
GRB ENVIRONMENTAL SERVICES INC GS-10F-0284X 212-564-8640 NEW YORK ,NY s/w
GRAVITATE LIMITED LIABILITY COMPANY 47QRAA18D004C (307)680-3637 GRAND PRAIRIE ,TX s/w/wo/ew/d  
GOLDBELT C6, LLC 47QRAA19D00CS (757)550-2121 CHESAPEAKE ,VA s/d/8a
GLOBAL SYSTEMS ENGINEERING, LLC 47QRAA20D0060 703-915-2338 ALEXANDRIA ,VA s/h
GLOBAL CONSULTING INC. GS-10F-0130X (925) 626-7121 GREENBELT ,MD s/w/wo
GLE ASSOCIATES, INC. GS-10F-0326X (813)241-8350 TAMPA ,FL s  
GIBB EPIDEMIOLOGY CONSULTING LLC 47QRAA19D004F 703-888-6059 ARLINGTON ,VA s/v
GEOSYSTEMS ANALYSIS, INC. GS-10F-0209Y 520-628-9330 TUCSON ,AZ s
GEOSYNTEC CONSULTANTS INC GS-10F-0106M 919-424-1823 KENNESAW ,GA o
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
GEOENGINEERS, INC. 47QRAA18D00E3 425.861.6000 REDMOND ,WA o
GENWEST SYSTEMS, INC.       GS-00F-0002W 425-771-2700 EDMONDS ,WA s/dv
GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. GS-00F-057CA 7039953733 FALLS CHURCH ,VA o
GEM TECHNOLOGY INTERNATIONAL, CORP. GS-00F-0001R 305.447.1344 MIAMI ,FL s/w/wo/ew/d
GEM TECHNOLOGIES, INC. 47QRAA20D007W 865-660-7339 KNOXVILLE ,TN s/d
GARCIA AND ASSOCIATES GS-10F-0389R 4154585803 SAN ANSELMO ,CA o
GANNETT FLEMING, INC. GS-00F-114CA 703- 277-9506 CAMP HILL ,PA o
G2 ARCHAEOLOGY 47QRAA20D001G 3102783100 RENO ,NV s/w/wo/d
G B K PARTNERSHIP, LLC, THE GS-10F-0413M 405-285-5349 OKLAHOMA CITY ,OK s/d/h
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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
FOURTUNE 4, INC.
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FOOTHILLS ENVIRONMENTAL, INC. GS-10F-0374S (303) 232-2660 LAKEWOOD ,CO s/d
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FALCONA MANAGEMENT & TECHNOLOGY, L L C GS-00F-272CA (210) 704-1486 SAN ANTONIO ,TX s/d/8a
F3 SOLUTIONS, LLC GS-10F-195BA 478-971-1343 WARNER ROBINS ,GA s/w/wo/ew/d
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ESPINOZA CULTURAL SERVICES, LLC 47QRAA20D0062 800-511-8685 LA JARA ,CO s/w/wo/ew/d/8a/h
ESP ASSOCIATES, INC. GS-10F-189BA 336-232-5213 FORT MILL ,SC o
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ERM-WEST, INC 47QRAA18D0059 (907)264-4454 WALNUT CREEK ,CA o  
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EPSILON SYSTEMS SOLUTIONS, INC. GS-00F-0035N 619-702-1700 SAN DIEGO ,CA o
ENVIROSYSTEMS MANAGEMENT, INC. GS-10F-0358M (928) 226-0236 FLAGSTAFF ,AZ s/w/wo
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ENVIRONMENTAL TESTING AND CONSULTING, INC. GS-00F-222GA 800-864-3236 ROMULUS ,MI s/w/wo/ew/d
ENVIRONMENTAL TECHNICAL SOLUTIONS, LLC 47QRAA18D001Q (813)298-0303 DENVER ,CO s/w/wo/ew/d  
ENVIRONMENTAL SYNECTICS, INC GS-10F-043BA 916-737-4011 SACRAMENTO ,CA s/h
ENVIRONMENTAL SCIENCE ASSOCIATES GS-10F-0191M 916.769.9303 SAN FRANCISCO ,CA o
ENVIRONMENTAL RESOURCE CENTER, INC.       GS-10F-0346X (919)469-1585 CARY ,NC s  
ENVIRONMENTAL RESEARCH GROUP LLC GS-10F-142BA 4103665170 BALTIMORE ,MD s/w/wo/ew/dv/8a
ENVIRONMENTAL QUALITY MANAGEMENT, INC 47QRAA19D00BJ 5138257500 CINCINNATI ,OH s/d
ENVIRONMENTAL PLANNING STRATEGIES, INC. GS-10F-0046R 5633326870 DAVENPORT ,IA s/w/wo/ew/d
ENVIRONMENTAL PLANNING GROUP, LLC GS-10F-0046N (602)956-4370 PHOENIX ,AZ s  
ENVIRONMENTAL MANAGEMENT SUPPORT, INC 47QRAA18D00C7 3015895318 SILVER SPRING ,MD s
ENVIRONMENTAL MANAGEMENT SERVICES INC GS-10F-0074T (301) 309-0475 ROCKVILLE ,MD s/w/wo/ew/d
ENVIRONMENTAL MANAGEMENT INC GS-10F-0308T 907-272-9336 ANCHORAGE ,AK s
ENVIRONMENTAL MANAGEMENT AND PLANNING SOLUTIONS, INC. GS-10F-0412S 14155400440 BOULDER ,CO s
ENVIRONMENTAL LAW INSTITUTE, THE GS-10F-0330P 2029393834 WASHINGTON ,DC o
ENVIRONMENTAL INCENTIVES, LLC GS-00F-193DA 530-541-2980 SOUTH LAKE TAHOE ,CA s
ENVIRONMENTAL HEALTH AND SAFETY SOLUTIONS, LLC 47QRAA21D004K (904)673-4858 PARKTON ,MD s/w/wo/ew    
ENVIRONMENTAL GROUP SERVICES, LTD. GS-10F-0457Y 312-447-1200 CHICAGO ,IL s
ENVIRONMENTAL ENGINEERING & MEASUREMENT SERVICES, INC. GS-10F-075AA (352)262-0802 GAINESVILLE ,FL s/w/wo/ew/d  
ENVIRONMENTAL COST MANAGEMENT, INC. GS-10F-0335R (510) 964-4399 COSTA MESA ,CA s/d
ENVIRONMENTAL CONSULTING GROUP, INC. GS-10F-0045V 630.607.0060 ELMHURST ,IL s
ENVIRONMENTAL CONSULTING AND TRAINING SERVICES, INC GS-10F-0355L 8657193215 ALCOA ,TN s/w/wo
ENVIRONMENTAL COMPLIANCE CONSULTANTS, INC       GS-10F-0018V 907-777-7107 ANCHORAGE ,AK s/dv/h
ENVIRONMENTAL CHEMICAL CORPORATION GS-10F-0091M 7208794737 BURLINGAME ,CA s
ENVIRONMENTAL BUSINESS PARTNERS, LLC GS-10F-0363T 9046124501 YULEE ,FL s/dv
ENVIRON-CIVIL ENGINEERING, LTD GS-00F-317CA (410)461-6451 COLUMBIA ,MD s/d  
ENVIROAPPLICATIONS, INC. GS-10F-0039X 619.291.3636 SAN DIEGO ,CA s
ENTERPRISE RESOURCE PLANNING INTERNATIONAL, LLC 47QRAA19D009W 3014900080 LAUREL ,MD o
ENGINEERING/REMEDIATION RESOURCES GROUP, INC. GS-10F-0294R 425-658-5361 MARTINEZ ,CA o
ENGINEERING & ENVIRONMENT, INC. 47QRAA21D0005 (757)457-0002 VIRGINIA BEACH ,VA s    
ENDYNA, INC.       GS-00F-0017Y 7038488840 MC LEAN ,VA s/w/wo/ew/d
ENDPOINT SOLUTIONS CORP. GS-10F-133BA 414-858-1204 FRANKLIN ,WI s
ELYON INTERNATIONAL, INC. GS-00F-203GA (360) 696-5892 VANCOUVER ,WA s/w/wo/ew/v/d
EL DORADO ENGINEERING, INC.       47QRAA18D00E6 801-966-8288 WEST JORDAN ,UT s
EKNA SERVICES, INC. 47QRAA20D0078 (808)695-6237 HONOLULU ,HI s/w/wo    
EHS-INTERNATIONAL, INC. GS-10F-0400S 2067317401 SEATTLE ,WA s/d
ECS MID-ATLANTIC, LLC 47QRAA19D006M 703-471-4800 CHANTILLY ,VA o
ECS FEDERAL, LLC GS-00F-072CA 571-232-1412 FAIRFAX ,VA o
ECOSYSTEM SCIENCES GS-00F-277DA 2083830226 BOISE ,ID s
ECOSYSTEM RESEARCH GROUP LLC GS-10F-0288P 4067219420 MISSOULA ,MT s/h
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
ECOPLAN ASSOCIATES INC GS-10F-0147T (480)733-6666 MESA ,AZ s  
ECONOMIC CONSULTANTS OREGON, LTD. 47QRAA20D007U 503-200-5076 PORTLAND ,OR s
ECOLOGY AND ENVIRONMENT, INC. 47QRAA18D0073 (202)303-2613 ARLINGTON ,VA o  
ECOLOGICAL SOLUTIONS GROUP LLC GS-10F-0002V 406-777-1881 STEVENSVILLE ,MT s
ECODIT LLC 47QRAA19D00DN 703-841-1883 ARLINGTON ,VA s
ECOCHEM, INC GS-10F-0103T (206)233-9332 SEATTLE ,WA s  
ECOANALYSTS INC       GS-10F-0050U (208)882-2588 MOSCOW ,ID s  
ECO RESOURCE GROUP, LLC GS-00F-017AA 206-478-6881 BAINBRIDGE ISLAND ,WA s/w/wo/ew/d
ECO & ASSOCIATES INC GS-10F-0371U 714-289-0995 TUSTIN ,CA s/w/d/8a
EASTERN RESEARCH GROUP, INC. GS-00F-079CA 7742491622 LEXINGTON ,MA o
EARTH SYSTEMS, INC. 47QRAA21D0009 9042470740 JACKSONVILLE BEACH ,FL s/d
EARTH SMART ENVIRONMENTAL SOLUTIONS, LLC GS-00F-099DA 240-298-5702 WINTER GARDEN ,FL s/dv
EARTH RESOURCES TECHNOLOGY, INC. GS-00F-109CA 3013231435 LAUREL ,MD o
EA ENGINEERING, SCIENCE, AND TECHNOLOGY, INC., PBC 47QRAA19D005G 410-584-7000 HUNT VALLEY ,MD s
E3 FEDERAL SOLUTIONS, LLC GS-00F-151CA 571-551-2726 MCLEAN ,VA o
E. H. T. TRACERIES, INC. 47QRAA18D001L (202)-393-1199 WASHINGTON ,DC s/w/wo/ew/d
E & S ENVIRONMENTAL CHEMISTRY, INC.       47QRAA21D003Q (541)758-1330 CORVALLIS ,OR s    
DYNAMIC SOLUTIONS, LLC GS-10F-0527N 8652123331 KNOXVILLE ,TN s/w
DTECH SERVICES 47QRAA19D0076 817-695-6519 ARLINGTON ,TX s/d
DPSTUDIO, LLC 47QRAA19D00C3 804-402-0446 RICHMOND ,VA s/w/wo/d
DPRA INCORPORATED 47QRAA19D003T 785-564-6041 KNOXVILLE ,TN s
DPRA INCORPORATED GS-00F-0030L (785)564-6041 KNOXVILLE ,TN s  
DOWNSTREAM STRATEGIES LLC GS-10F-103AA 304-292-2450 MORGANTOWN ,WV s
DOUGLAS W PETERS & ASSOCIATES, INC GS-10F-0049N (502) 454-8530 LOUISVILLE ,KY s
DMG FOUR CORNERS RESEARCH INC GS-10F-0614N 575-323-3271 LAS CRUCES ,NM s/w
DKI RESTORATION, LLC 47QRAA18D00FW 630-350-3000 ELK GROVE VILLAGE ,IL s/d
DEWBERRY ENGINEERS INC. GS-00F-280CA 703.208.6872 FAIRFAX ,VA o
DESERT ARCHAEOLOGY, INC GS-10F-161AA 520-881-2244 TUCSON ,AZ s
DCR SERVICES & CONSTRUCTION, INC.       47QRAA18D009A (313)779-2612 DETROIT ,MI s/d/8a/h  
DAWSON SOLUTIONS, LLC 47QRAA18D009F 2105276907 HUNTSVILLE ,AL s/d/8a
DAVEY RESOURCE GROUP, INC. GS-10F-0615N (330)607-7464 KENT ,OH o  
DAV ENERGY SOLUTIONS GS-00F-314GA (619) 356-1147 SAN DIEGO ,CA s/dv
DADE MOELLER & ASSOCIATES, INC. GS-00F-333CA 509.942.3644 RICHLAND ,WA o
CULTURAL RESOURCE ANALYSTS INC 47QRAA19D0048 859-252-4737 LEXINGTON ,KY s
CSA OCEAN SCIENCES INC. GS-10F-0443M 7729793134 STUART ,FL o
CRS CONSULTING ENGINEERS, INCORPORATED       47QRAA19D004X 801-359-5565 SALT LAKE CITY ,UT s/d
CRITERION LABORATORIES INC GS-10F-0311X 2152441300 BENSALEM ,PA s
CREDERE ASSOCIATES, LLC 47QRAA18D005L 207-828-1272 WESTBROOK ,ME s/w/wo/ew/d/8a
CRANMER ENGINEERING, INC.
(DBA: CRANMER ANALYTICAL LABORATORY) 		47QSWA21D0012 530-273-7284 GRASS VALLEY ,CA s/d
CORNERSTONE ENVIRONMENTAL CONSULTING, LLC       47QRAA19D0057 928-522-4148 FLAGSTAFF ,AZ s/d
COPPERHEAD ENVIRONMENTAL CONSULTING, INC 47QRAA18D00CR 8599259012 PAINT LICK ,KY s
CONSULTECH ENVIRONMENTAL, LLC 47QRAA20D003M 919-234-4238 APEX ,NC s/w/wo/ew/d
CONSOLIDATED SAFETY SERVICES INCORPORATED GS-00F-217CA (703) 877-3352 FAIRFAX ,VA o
CONCURRENT TECHNOLOGIES CORPORATION 47QRAA21D0021 814-269-2871 JOHNSTOWN ,PA o
COMPREHENSIVE ENVIRONMENTAL INC. 47QRAA18D00DM 603-424-0564 BOLTON ,MA s/w/wo/ew/d
COMMONWEALTH HERITAGE GROUP,INC. GS-00F-261DA (517)788-3561 DEXTER ,MI s  
COLLABORATIVE INC, THE GS-10F-0147V 303-442-3601 BOULDER ,CO s
COLIBRI ECOLOGICAL CONSULTING, LLC 47QRAA21D0018 559-761-1551 FRESNO ,CA s/w/wo/ew/d
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  
CLEAN VENTURE, INC. GS-10F-0254N 3145780579 AVENEL ,NJ o
CLEAN HARBORS ENVIRONMENTAL SERVICES, INC. GS-10F-0270M (781)792-5747 NORWELL ,MA o  
CLARK GROUP, LLC, THE GS-10F-0150W 8029170584 WASHINGTON ,DC s/w/wo/ew/d
CITADEL ENVIRONMENTAL SERVICES, INC. GS-10F-0281V (818)246-2707 GLENDALE ,CA s  
CIRRUS ECOLOGICAL SOLUTIONS, L.C. GS-10F-0164T 4357871490 LOGAN ,UT s
CIRCLEPOINT GS-00F-0012R (510) 285-6700 OAKLAND ,CA s
CHLOETA FIRE, L.L.C. GS-10F-049BA 877-245-6382 JAY ,OK s/d/8a/h
CHESAPEAKE ENVIRONMENTAL COMMUNICATIONS, INC. 47QRAA18D005E (804)824-3945 RICHMOND ,VA s/w/wo/ew/d  
CHEROKEE NATION MANAGEMENT & CONSULTING, L.L.C. GS-00F-302GA 210-323-4113 CATOOSA ,OK s/d/8a
CHENEGA RELIABLE SERVICES, LLC 47QSHA21D001A 256-665-0610 SAN ANTONIO ,TX s/d/8a
CHENEGA FACILITIES MANAGEMENT, LLC 47QSHA20D0033 256-665-0610 SAN ANTONIO ,TX o
CE2 CORPORATION, INC. GS-00F-207CA 510-816-1517 PLEASANTON ,CA s/d
CDM FEDERAL PROGRAMS CORPORATION GS-00F-085CA 303-383-2300 FAIRFAX ,VA o
CASTLE HILL ASSOCIATES, LLC 47QRAA18D00BP (567) 952-0212 WATERVILLE ,OH s/w/wo/dv/d
CARDNO GS, INC. GS-00F-196CA 9165487783 CHARLOTTESVILLE ,VA o
CALIBRE SYSTEMS, INC. GS-00F-185CA (703)797-8560 ALEXANDRIA ,VA o  
CADMUS GROUP LLC, THE GS-00F-227CA 617 673-7170 WALTHAM ,MA o
CABRERA SERVICES INC. 47QRAA18D000H 860-569-0095 EAST HARTFORD ,CT s/d
C.J. SETO SUPPORT SERVICES, LLC GS-10F-0408R 805-233-2047 VENTURA ,CA s/dv/d
C. H. GUERNSEY & COMPANY 47QRAA19D00DM 405-416-8278 OKLAHOMA CITY ,OK o
BURNS & MCDONNELL ENGINEERING COMPANY, INC. 47QRAA18D0054 816-822-4343 KANSAS CITY ,MO o
BURLESON CONSULTING, INC. GS-10F-0277R 916-984-4651 FOLSOM ,CA s/d
BUELL ENVIRONMENTAL LLC GS-00F-266DA 970-736-8557 OAK CREEK ,CO s/w/wo
BSA ENVIRONMENTAL SERVICES, INC. GS-10F-0302S 2167650582 CLEVELAND ,OH s
BROCKINGTON AND ASSOCIATES, INC. GS-10F-0145U 843-881-3128 ATLANTA ,GA s
BROADBENT & ASSOCIATES, INC. 47QRAA20D004L 775-322-7969 EXT. 60 HENDERSON ,NV o
BRIC, LLC 47QRAA20D007L 505-259-8187 ALBUQUERQUE ,NM s/d/8a/h
BRATSLAVSKY CONSULTING ENGINEERS, INC. GS-00F-071CA 9072807619 ANCHORAGE ,AK s
BOSTON GOVERNMENT SERVICES, LLC GS-00F-013GA (202)262-8098 LENOIR CITY ,TN s/d/8a
BOOZ ALLEN HAMILTON INC.       GS-00F-008DA 703-377-4359 MCLEAN ,VA o
BMT DESIGNERS & PLANNERS, INC. GS-00F-337CA 703-920-7070 ARLINGTON ,VA o
BLUESTONE ENVIRONMENTAL GROUP INC. GS-00F-117DA 484-802-5150 MALVERN ,PA s/w/wo/ew/8a
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
BIO-WEST, INC. GS-10F-0331S 435-752-4202 LOGAN ,UT s
BHATE ENVIRONMENTAL ASSOCIATES, INC. 47QRAA19D004S 2059184033 BIRMINGHAM ,AL s
BBJ GROUP LLC GS-10F-0471X 312-219-7769 CHICAGO ,IL s
BB&E, INC. 47QRAA20D007E 2484899636 NORTHVILLE ,MI s
BB&E, INC. GS-10F-0103N 2484899636 NORTHVILLE ,MI s
BATTELLE MEMORIAL INSTITUTE GS-00F-084CA 614-424-3522 COLUMBUS ,OH o
BATTA ENVIRONMENTAL ASSOCIATES, INC. GS-10F-0004T 3027373376 NEWARK ,DE s/d
B3GLOBALCON, LLC       GS-00F-226GA (804)519-9808 MIDLOTHIAN ,VA s/dv/d  
B&B DIVERSIFIED ENTERPRISES, INC.       GS-00F-307DA (610)845-0640 BARTO ,PA s/w/wo/d  
AYUDA COMPANIES GS-10F-0043W 303-999-2152 DENVER ,CO s/w/wo/ew/d/h
AXIS MANAGEMENT GROUP LLC 47QRAA18D007F 540-338-5071 MCLEAN ,VA s/w/wo/ew/d/8a
AVANTI CORPORATION 47QRAA20D002D 703-765-0060 ALEXANDRIA ,VA s/w/wo/ew/d
AVANTI CORPORATION GS-10F-0308P 703-765-0060 ALEXANDRIA ,VA s/w/wo
AVALON BUSINESS ENGINEERING SERVICES, LLC 47QRAA20D003E 801 668-5823 CLEARFIELD ,UT s/w/wo/ew/dv/d/8a
AUXILIO MANAGEMENT SERVICES       GS-00F-005HA 7203271068 DENVER ,CO s/w/wo/ew/d/8a
ATLANTIC GROUP, LLC, THE GS-10F-106AA 2569719991 HUNTSVILLE ,AL s
ATKINS NORTH AMERICA, INC. 47QRAA21D002Z 813 281 4430 TAMPA ,FL o
ATKINS NORTH AMERICA, INC. GS-00F-007AA 813-281-4430 TAMPA ,FL o
ATI, INC. 47QRAA18D00E9 410-992-3424 COLUMBIA ,MD s/d/8a
ATCS, P.L.C. GS-10F-0040V 703-817-3544 HERNDON ,VA o
ATC GROUP SERVICES LLC GS-10F-0458N (720)837-5628 LAFAYETTE ,LA o  
ASSOCIATION OF STATE WETLAND MANAGERS INC, THE GS-10F-0065V 207-892-3399 WINDHAM ,ME o
ASSISTED MANAGEMENT SOLUTIONS, INC. GS-00F-381GA (301)904-5223 LEONARDTOWN ,MD s/w/wo/ew/d/8a    
ASPEN ENVIRONMENTAL GROUP       GS-10F-0229N 818-597-3407 AGOURA HILLS ,CA s/d
ASPEN CULTURAL RESOURCE MANAGEMENT SOLUTIONS GS-10F-0013V 505-231-0157 SANTA FE ,NM s/w
ASM AFFILIATES INC 47QRAA19D0092 3102783100 CARLSBAD ,CA s
ASM AFFILIATES INC GS-10F-0373N (310) 278-3100 X 701 CARLSBAD ,CA s
ASIR, LLC GS-10F-0249X 505-247-9337 ALBUQUERQUE ,NM s
ARS ALEUT REMEDIATION LLC GS-00F-300GA (240)938-7461 PORT ALLEN ,LA s/d/8a  
ARM ENVIRONMENTAL SERVICES INC GS-10F-0201N 8037833314 COLUMBIA ,SC s
ARCHAEOLOGICAL CONSULTING SERVICES, LTD. GS-10F-0224P 480-894-5477 TEMPE ,AZ s/w
ARC ENVIRONMENTAL, INC. GS-10F-0007S 410-659-9971 BALTIMORE ,MD s
APPLIED MARINE SCIENCES, INC 47QRAA19D005B 925-373-7142 LIVERMORE ,CA s
APPLIED INTELLECT GS-10F-026BA 571-510-0862 CRANBERRY TOWNSHIP ,PA s/d/8a
APPLIED INSIGHT, LLC GS-00F-145GA 703-554-1650 TYSONS ,VA o
APPLIED ENVIROSOLUTIONS INC GS-10F-0324S 480-839-7000 TEMPE ,AZ s/w/wo/ew/d
APPLIED ENVIRONMENTAL, INC. 47QRAA19D0098 (703) 648-0822 HERNDON ,VA s/w/wo
APPLIED EARTHWORKS INC GS-10F-0332P (559) 229-1856 FRESNO ,CA s
ANDERSON ENGINEERING OF MINNESOTA, LLC       47QRAA18D006J 763-412-4000 MINNEAPOLIS ,MN s/dv
ANCHOR QEA, LLC GS-10F-0590N 206-287-9130 SEATTLE ,WA o
ANAMAR ENVIRONMENTAL CONSULTING, INC. GS-10F-091CA 3523779168 GAINESVILLE ,FL s/w/wo
ANALYSIS, PLANNING AND MANAGEMENT INSTITUTE, INC. 47QRAA19D0047 540-321-4888 CULPEPER ,VA o
AMERICAN COMPLIANCE TECHNOLOGIES, INC
(DBA: A-C-T ENVIRONMENTAL & INFRASTRUCTURE) 		GS-00F-302DA (863)533-2000 BARTOW ,FL s  
ALTHOUSE & MEADE INC 47QRAA19D005T (805)237-9626 PASO ROBLES ,CA s/w/wo/d  
ALTA ARCHAEOLOGICAL CONSULTING LLC 47QRAA18D009U 7075444206 SANTA ROSA ,CA s/w/wo/ew/d
ALPINE ARCHAEOLOGICAL CONSULTANTS, INC. GS-10F-0004S 970-249-6761 EXT 38 MONTROSE ,CO s
ALPHA-OMEGA TRAINING AND COMPLIANCE INC GS-10F-0350Y 3214459845 COCOA ,FL s/v
ALPHA FACILITIES SOLUTIONS, LLC 47QRAA20D000T 2106013190 SAN ANTONIO ,TX s/dv/d
ALLIANT CORPORATION GS-10F-0110V 8653630726 KNOXVILLE ,TN s/dv
ALLIANCE SOLUTIONS GROUP, INC. GS-10F-0272W 757-223-7233 NEWPORT NEWS ,VA s/dv
ALLEGHENY SCIENCE & TECHNOLOGY CORPORATION GS-10F-053AA (304)367-9511 BRIDGEPORT ,WV s/w/wo/ew/d/8a  
ALISTO ENGINEERING GROUP, INC. GS-10F-0080M (925)279-5000 WALNUT CREEK ,CA s    
ALFRED BENESCH & COMPANY GS-10F-0181W 570-624-4266 CHICAGO ,IL o
ALBION ENVIRONMENTAL INC GS-10F-0301W 831-469-9128 SANTA CRUZ ,CA s
ALASKA BIOMAP, INC. 47QSWA19D000K 907-321-2908 JUNEAU ,AK s/w/wo
AIR RESOURCE SPECIALISTS, INC. GS-10F-0046U 970-484-7941 FORT COLLINS ,CO s
AH ENVIRONMENTAL CONSULTANTS, INC. 47QRAA18D00AU (757)873-4959 NEWPORT NEWS ,VA s    
AGEISS INC. 47QRAA19D00BC 720-340-8770 LAKEWOOD ,CO o
AFFINITY CONSULTANTS INC 47QRAA18D0055 (330)854-9066 CANAL FULTON ,OH s    
AEW ENGINEERING INC GS-10F-0519N (402)690-1422 OMAHA ,NE s/w/wo/ew/dv/d  
AEROSOL MONITORING & ANALYSIS 47QRAA19D0063 4106843327 HANOVER ,MD s/d
AERO E H & S INC GS-10F-0379Y 4104803636 ELLICOTT CITY ,MD s
AECOM TECHNICAL SERVICES, INC. GS-00F-188CA 210-296-2000 LOS ANGELES ,CA o
ADVANCED TECHNOLOGIES AND LABORATORIES (ATL) INTERNATIONAL, INC GS-00F-067CA 865-567-6793 GAITHERSBURG ,MD s/w/wo
ADVANCED RESOURCES INTERNATIONAL INC GS-10F-077AA 7035288420 ARLINGTON ,VA s
ADVANCED RESOURCE SOLUTIONS, INC GS-10F-0261S 530-676-1095 SHINGLE SPRINGS ,CA s
ADVANCED ENVIRONMENTAL, LLC 47QRAA21D004G (408)512-2912 SAN JOSE ,CA s    
ADVANCED ENVIRONMENTAL MANAGEMENT GROUP, LLC GS-10F-0338X 734-354-9070 PLYMOUTH ,MI s/d
ADVANCED AIR ANALYSIS, INC. GS-00F-154GA (410)653-7676 PIKESVILLE ,MD s/d  
ADANTA, INC. GS-10F-041CA 707-709-8894 NAPA ,CA s/w/wo/ew/d/8a
ACADIAN CONSULTING GROUP 47QRAA19D000Z (225)769-2603 BATON ROUGE ,LA s  
ABT ASSOCIATES, INC. GS-00F-252CA 301-347-5093 ROCKVILLE ,MD o
ABR INC 47QRAA20D0010 (907) 455-6777 EXT. FAIRBANKS ,AK s
AARCHER INC GS-10F-0451M 410-897-9100 ANNAPOLIS ,MD s
A.I.S., INC. GS-10F-0131T (508)990-9054 DARTMOUTH ,MA s  
A.D. MARBLE & CO., INC. GS-00F-411GA 484-533-2550 KING OF PRUSSIA ,PA s
A E H S INCORPORATED GS-10F-0227R 210-656-9300 SAN ANTONIO ,TX s/v
3D ENVIROLOGICS LLC GS-10F-023CA 4349894223 EARLYSVILLE ,VA s/w/wo