GSA Federal Acquisition Service
Search:

For general questions, contact:
FAS National Customer Service Ctr
Phone: 1-800-488-3111
E-mail: ncsccustomer.service@gsa.gov

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).
496 contractors

Download Contractors (Excel)
Display:
  Hold the 'Ctrl' key to select all that apply
Search Contractor T&Cs/Pricelist
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
YAHSGS LLC GS-10F-0279L 5095397147 SPOKANE ,WA s/w/wo/h
XCEL ENGINEERING, INC. GS-10F-0211P 8657668542 OAK RIDGE ,TN s/dv
WSP USA INC. 47QRAA19D003Q 217-649-8754 NEW YORK ,NY o
WOOLPERT, INC. GS-00F-0038N 937-531-1309 DAYTON ,OH o
WOODS CANYON ARCHAEOLOGICAL CONSULTANTS INC GS-10F-0446Y 970-564-9640 CORTEZ ,CO s
WOODARD & CURRAN, INC. GS-10F-0086M 7812510200 PORTLAND ,ME o
WOOD ENVIRONMENT & INFRASTRUCTURE SOLUTIONS, INC. GS-00F-314CA 610-877-6021 BLUE BELL ,PA o
WINDJAMMER ENVIRONMENTAL LLC GS-00F-180GA 3143246042 OXON HILL ,MD s/d/8a
WILDLIFE SPECIALISTS, LLC GS-10F-231AA 570-376-2255 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 (970)241-7076 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 3076341756 CHEYENNE ,WY o
WEST KERN ENVIRONMENTAL CONSULTING, LLC GS-00F-408GA (661)319-8713 BAKERSFIELD ,CA s/w/wo/ew/d/8a  
WENCK ASSOCIATES, INC. GS-10F-0220W 678-987-5845 MAPLE PLAIN ,MN s
WCP INC. GS-10F-0127U 8083803856 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  
VISION PLANNING & CONSULTING, LLC 47QRAA19D000L 240-893-8719 FULTON ,MD s/w/wo/ew/d/8a
VERSAR, INC. 47QRAA18D00F7 703-642-6733 SPRINGFIELD ,VA o
VERNADERO GROUP INCORPORATED GS-10F-0033T 4803151000 PHOENIX ,AZ s/v
USFIN DEVELOPMENT, LLC GS-10F-0310X 419-351-8703 SOUTHERN SHORES ,NC s/dv/d/h
URS GROUP, INC. GS-00F-188CA 210-253-7531 SAN ANTONIO ,TX o
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
UNITED ANALYTICAL SERVICES, INC. 47QRAA17D0002 630-691-8271 DOWNERS GROVE ,IL s/w/wo/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
TRANSCON ENVIRONMENTAL INC.       GS-10F-0192M 707-786-6502 MESA ,AZ s/d
TOTAL ENVIRONMENTAL CONCEPTS, INC. GS-10F-0270V 3015480382 GAITHERSBURG ,MD s
TOEROEK ASSOCIATES, INC. GS-00F-055CA 720-898-4114 LAKEWOOD ,CO s
TNT ENVIRONMENTAL, INC. 47QRAA18D00CD 703-466-5123 CHANTILLY ,VA s
TLI SOLUTIONS, INC. GS-10F-0343S 7038183233 CHANTILLY ,VA o
TITAN ENVIRONMENTAL SOLUTIONS, INC 47QRAA20D003Q (888)965-1510 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 5718305606 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 EC, INC. 47QRAA18D00H0 8036414928 GOLDEN ,CO o
TERWILLIGER CONSULTING, INC. GS-10F-0220L (757) 787-3974 LOCUSTVILLE ,VA s/w/wo
TERRANEXT, LLC GS-10F-0320L 303-399-6145 DENVER ,CO s/w/wo/ew/d
TERRACON CONSULTANTS, INC. 47QRAA20D0065 (301)913-5000 OLATHE ,KS o    
TERRA SOLUTIONS & SERVICES, INC. 47QRAA19D00AV 925-250-5603 HERLONG ,CA s/d/8a
TELLEVATE, LLC GS-00F-245GA 404-538-5494 DECATUR ,GA s
TELEDYNE BROWN ENGINEERING, INC. GS-00F-155CA 2567261211 HUNTSVILLE ,AL o
TECHNICAL RESOURCES INC GS-00F-274CA 301-897-7408 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
SYSTEMATIC MANAGEMENT SERVICES, INC. GS-00F-241CA 3013530072 FREDERICK ,MD s
SWCA, INCORPORATED 47QRAA19D004C (602) 274-3831 PHOENIX ,AZ o
SWCA, INCORPORATED GS-10F-0209L (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
SUNDANCE CONSULTING, INC.       47QRAA18D00AS 208-233-2929 POCATELLO ,ID s/w/wo/d
STRAUGHAN ENVIRONMENTAL, INC. GS-10F-014CA 4435392534 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
STEARNS, CONRAD AND SCHMIDT CONSULTING ENGINEERS, INC.
(DBA: SCS ENGINEERS)
GS-10F-0371K 703-471-6150 LONG BEACH ,CA o
SRC, INC. 47QRAA19D005N 315-452-8594 NORTH SYRACUSE ,NY o
SRA INTERNATIONAL, INC. GS-00F-256CA 571.446.4017 CHANTILLY ,VA o
SPECTRUM SERVICES GROUP, INC. GS-10F-237AA 916-760-7913 SACRAMENTO ,CA s/d/8a/h
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 520-622-3607 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 4049153199 WOODSTOCK ,GA s
SOLUTIENT TECHNOLOGIES, LLC 47QRAA18D008Q (330) 497-5905 NORTH CANTON ,OH s/d
SOL SOLUTIONS, LLC 47QRAA18D00AF 210-325-1163 SCOTTSDALE ,AZ s/v/d/8a
SOL ENGINEERING SERVICE LLC GS-00F-223GA 601-961-1415 JACKSON ,MS s/d/h
SOIL AND LAND USE TECHNOLOGY, INC.
(DBA: TLB ASSOCIATES)
GS-10F-0072T 443-896-6159 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 719-310-0760 COLORADO SPRINGS ,CO s/dv
S2O DESIGN AND ENGINEERING 47QRAA19D006R 303-819-3985 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
RURAL COMMUNITY ASSISTANCE CORPORATION GS-10F-0255X 916-447-9832 WEST SACRAMENTO ,CA o
RURAL AND TRIBAL ENVIRONMENTAL SOLUTIONS GS-10F-0257R 406-861-7696 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 801-467-3661 SALT LAKE CITY ,UT s
RMC CONSULTANTS, INC. GS-10F-0482M 3039804101 WHEAT RIDGE ,CO s/d
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
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 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 3032770066 GOLDEN ,CO s/w/wo
RENOVA ENVIRONMENTAL SERVICES LIMITED LIABILITY COMPANY 47QRAA20D005N (866)916-6484 OCEAN ,NJ s/d/8a/h    
REDHORSE CORPORATION       GS-00F-0013Y 619-241-4609 SAN DIEGO ,CA o
RED J ENVIRONMENTAL CORPORATION GS-10F-0246T (928) 288-3239 JOSEPH CITY ,AZ s/h
RECON ENVIRONMENTAL GS-10F-0339M 619-308-9333 EXT 181 SAN DIEGO ,CA s
RE/SPEC INC. GS-00F-0078N 6053946400 RAPID CITY ,SD o
RAVEN ENVIRONMENTAL SERVICES, INC. GS-00F-264DA 9362910946 HUNTSVILLE ,TX s
R2T, INC. GS-00F-129GA 7705697038 ATLANTA ,GA s/w/wo/ew/d
R. CHRISTOPHER GOODWIN & ASSOCIATES, INC. 47QRAA20D002Q 301-694-0428 NEW ORLEANS ,LA s
R. CHRISTOPHER GOODWIN & ASSOCIATES, INC. GS-10F-0068L 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  
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 770 200-0192 ATLANTA ,GA s
PROJECT ENHANCEMENT CORPORATION       GS-00F-0004T 240-686-3059 GERMANTOWN ,MD s
PROFESSIONAL PROJECT SERVICES, INC. GS-00F-112CA 865-220-4377 OAK RIDGE ,TN s
PRESTIGE ENVIRONMENTAL INC GS-10F-0166T 9087579700 SOMERSET ,NJ s
POTOMACWAVE CONSULTING, INC. GS-00F-0007X 703-997-6066 ALEXANDRIA ,VA s/w/wo/ew
POTOMAC-HUDSON ENGINEERING, INC. 47QRAA18D0074 3019079078 ROCKVILLE ,MD 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 303.980.5200 LAKEWOOD ,CO s/w
PIKA INTERNATIONAL, INC. GS-10F-0202U 281-325-6866 STAFFORD ,TX s/d
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
PCCI, INC. 47QRAA18D00HE 703-229-1110 ALEXANDRIA ,VA o
PC TRASK AND ASSOCIATES INC. 47QRAA19D000H (503)240-3973 PORTLAND ,OR s    
PBS ENGINEERING AND ENVIRONMENTAL INC. GS-10F-0170L 3605672105 PORTLAND ,OR o
PARTNER ASSESSMENT CORPORATION 47QRAA18D00EE 773-840-5070 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 253-501-5155 PUYALLUP ,WA o
PARAGON PROFESSIONAL SERVICES LLC 47QRAA19D007B 907-334-8311 ANCHORAGE ,AK s/d/8a
PARADIGM ENVIRONMENTAL 47QRAA18D003K 7039571908 OAKTON ,VA s
PALEOWEST, L.L.C.       GS-10F-0116V 6022617253 PHOENIX ,AZ s
PACIFIC WESTERN TECHNOLOGIES, LTD. GS-00F-0002M 303-274-5400 EXT 104 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 301-946-0912 KENSINGTON ,MD s
OTIS BAY, INC. GS-10F-0331Y (775)345-9960 VERDI ,NV s  
ORGANIZATIONAL STRATEGIES, LLC GS-00F-145GA 703-554-1650 TYSONS ,VA o
OPES, INC GS-10F-185AA (405)360-2911 NORMAN ,OK s/h
ONEIDA TOTAL INTEGRATED ENTERPRISES, LLC GS-00F-0006L 4142574200 MILWAUKEE ,WI s/d/8a
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
NUTRIEN AG SOLUTIONS, INC. GS-10F-0066W (207) 944-6200 LOVELAND ,CO o
NUKA RESEARCH AND PLANNING GROUP, LLC GS-10F-164AA (508) 746-1047 SELDOVIA ,AK s/h
NORTHLAND RESEARCH, INC GS-10F-0070W 480-894-0020 FLAGSTAFF ,AZ s
NORTECH, INC. GS-10F-0150R (907) 452-5688 FAIRBANKS ,AK s
NOREAS, INC. GS-00F-373GA 949-467-9100 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 WESTMINSTER ,CO s/d
NEW SOUTH ASSOCIATES, INC. GS-10F-0230N 770-498-4155 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 8652209650 OAK RIDGE ,TN s/w/wo/d
NATURES IMAGE, INC. GS-10F-045BA 9496804400 LAKE FOREST ,CA s/w/wo
NATIVE-X, INC GS-10F-0174U 7755600808 RENO ,NV s/v
NATIVE ENERGY & TECHNOLOGY, INC. GS-00F-248CA 210-231-6060 SAN ANTONIO ,TX s/d
MXI ENVIRONMENTAL SERVICES LLC GS-10F-0013Y (908)295-0555 ABINGDON ,VA s
MUSTARDSEED CULTURAL AND ENVIRONMENTAL SERVICES, LLC GS-10F-0009U 8163332424 KANSAS CITY ,MO s/w/d
MSE GROUP, LLC GS-10F-0469Y 855-629-8180 SAN ANTONIO ,TX s
MIDWEST ASSISTANCE PROGRAM, INC. GS-10F-0025T 660-562-2575 MARYVILLE ,MO o
MID ATLANTIC SOLID WASTE CONSULTANTS, LLC GS-00F-275GA 4072841980 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
MEAD AND HUNT, INC. GS-00F-230DA 888-364-7272 MIDDLETON ,WI o
MDB, INC. 47QRAA20D0028 202-331-0060 WASHINGTON ,DC s
MDB, INC. GS-00F-0001S 202-331-0060 WASHINGTON ,DC s
MCG GEOTECHNICAL ENGINEERING I GS-10F-0142X (303)589-8486 MORRISON ,CO s/w/wo/d  
MAXXIMUS ENVIRONMENTAL, INC GS-10F-0180X (301) 838-2730 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 503-224-3445 PORTLAND ,OR s/d
MARSTEL-DAY, LLC GS-00F-070CA 7038395512 FREDERICKSBURG ,VA s/w/wo/h
MARSH & ASSOCIATES LLC       GS-10F-0085V 4804560801 TEMPE ,AZ s
MANNIK & SMITH GROUP, INC., THE 47QRAA20D006A (419)891-2222 MAUMEE ,OH s    
MANAGEMENT & ENGINEERING SVCS LLC GS-10F-0159L (303)684-0215 LONGMONT ,CO s  
MABBETT & ASSOCIATES, INC. GS-10F-0120T 781-275-6050 X306 STONEHAM ,MA s/dv
LYNKER TECHNOLOGIES LLC GS-00F-125CA 703-431-5855 BOULDER ,CO o
LRS FEDERAL LLC GS-10F-0360T 4105443570 SEVERNA PARK ,MD s/dv
LPES, INC GS-10F-204BA 7573570730 SMITHFIELD ,VA s
LOW IMPACT DEVELOPMENT CENTER (LID), INC.       GS-10F-0084N (301)982-5559 BELTSVILLE ,MD o  
LOUIS BERGER U.S., INC. 47QRAA18D002R 202-303-2613 WASHINGTON ,DC o
LOS ALAMOS TECHNICAL ASSOCIATES, INC. GS-10F-0017V (505)880-3495 ALBUQUERQUE ,NM s  
LOGISTICS MANAGEMENT INSTITUTE       GS-00F-0026M 703-917-7176 MC LEAN ,VA o
LOGISTICS MANAGEMENT INSTITUTE       GS-00F-041GA 703-917-7176 MC LEAN ,VA o
LOGAN SIMPSON DESIGN INC. GS-10F-0063P 480-967-1343 TEMPE ,AZ o
LJB INC GS-00F-049CA (937) 259-5146 MIAMISBURG ,OH o
LINK TECHNOLOGIES INC GS-00F-216CA 301-983-6878 GERMANTOWN ,MD s/w/wo
LINEBACH FUNKHOUSER INC 47QRAA18D0035 502-895-5009 LOUISVILLE ,KY s
LINDAHL REED, INC. 47QRAA18D00GR 541-728-1102 REDMOND ,OR s/w/wo/ew
LIMNO-TECH, INC. GS-10F-150BA 7348213159 ANN ARBOR ,MI o
LG2 ENVIRONMENTAL SOLUTIONS INC       GS-10F-0375N 904-288-8631 JACKSONVILLE ,FL s/w/wo/ew/d/8a
LEW CORPORATION 47QRAA18D002A (908)654-8068 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)342-7377 NATIONAL CITY ,CA o    
KLEINFELDER, INC. GS-10F-0029L 619-831-4634 RANCHO CORDOVA ,CA o
KIER, WILLIAM M ASSOCIATES       GS-10F-0124U 415-721-7548 SAN RAFAEL ,CA s
KERES CONSULTING, INC. GS-00F-154CA 5058372104 ALBUQUERQUE ,NM s/d
KENIFIC GROUP INC, THE 47QRAA19D00C7 571-363-4002 FAIRFAX ,VA s/d
KEMRON ENVIRONMENTAL SERVICES, INC. 47QRAA20D000E 404-601-6930 ATLANTA ,GA s
KELLER-BLIESNER ENGINEERING, LLC       47QRAA18D004Q 435-753-5651 LOGAN ,UT s
KANE ENVIRONMENTAL, INC. GS-10F-0061W 2066910476 SEATTLE ,WA s
JOYCE COFFEE CONSULTING LLC 47QRAA20D004R 3128949028 CHICAGO ,IL s/w/wo
JOHNSON, MIRMIRAN & THOMPSON, INC. GS-00F-194CA 410-329-3100 HUNT VALLEY ,MD o
JENSEN HUGHES, INC. GS-00F-006CA 925-208-0943 BALTIMORE ,MD o
JE FULLER/HYDROLOGY AND GEOMORPHOLOGY, INC. GS-00F-079GA 480-222-5707 TEMPE ,AZ s
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
INTEGRATED STATISTICS INCORPORATED GS-10F-0395N 5085408560 WOODS HOLE ,MA s/w/wo
INTEGRATED SCIENCE SOLUTIONS, INC. GS-10F-0077X 9259791535 WALNUT CREEK ,CA s/w/wo
INTEGRA GOVERNMENT SERVICES INTERNATIONAL LLC GS-10F-083CA 2028984110 WASHINGTON ,DC s/dv
INSIGNIA ENVIRONMENTAL 47QRAA20D005U (760)635-1587 PALO ALTO ,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
I. H. I. GS-10F-0446R (763)489-3150 MIDVALE ,UT s  
HZW ENVIRONMENTAL CONSULTANTS, LLC       47QRAA19D00C6 (330)208-2717 MENTOR ,OH s/w/wo    
HYDROSOLUTIONS INC GS-10F-0172X 4066559555X100 HELENA ,MT s/dv
HYDROS CONSULTING INC. GS-10F-220BA 303-284-1841 BOULDER ,CO s
HYDROGEOLOGIC, INC. 47QRAA18D00CW 7034785186 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 5088336600 SANDWICH ,MA s
HITACHI CONSULTING CORPORATION       GS-00F-0001X 804-761-5676 DALLAS ,TX o
HHM & ASSOCIATES, INC. GS-10F-0244Y (512)478-8014 AUSTIN ,TX s/w/wo  
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
HAZTRAIN, INC. 47QRAA20D0056 301-932-0994 WALDORF ,MD s/w/wo
HAZAIR, INC. GS-10F-114CA 702-941-1813 HENDERSON ,NV s/dv/d/8a
HAWAII INTERNATIONAL ENVIRONMENTAL SERVICES, INC. GS-10F-0132L (808)263-4787 KAILUA ,HI s/w/wo/ew  
HARTGEN ARCHEOLOGICAL ASSOCIATES INC GS-10F-0424Y 5182830534 RENSSELAER ,NY s
HART CROWSER, INC. GS-10F-0308K (206)324-9530 SEATTLE ,WA o  
HARRIS ENVIRONMENTAL GROUP, INC. GS-10F-0457R 5206287648 TUCSON ,AZ s/w/wo/ew/d/8a/h
HAMER ENVIRONMENTAL L.P. GS-10F-087AA 360-899-5156 MOUNT VERNON ,WA s
GULF SOUTH RESEARCH CORPORATION 47QRAA19D006W (225)757-8088 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 (616)916-3306 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. GS-23F-0032S 518-209-4823 BABYLON ,NY o
GREEN STREET ENVIRONMENTAL, LLC 47QRAA18D000N 410-296-8800 BALTIMORE ,MD s
GREEN REVIEWS INC 47QRAA19D0004 (201) 346-1776 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
GRB ENVIRONMENTAL SERVICES INC GS-10F-0284X 212-564-8640 NEW YORK ,NY s/w
GP STRATEGIES CORPORATION GS-00F-0039N 443-367-9611 COLUMBIA ,MD o
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 505-830-6074 TUCSON ,AZ s
GEOSYNTEC CONSULTANTS INC GS-10F-0106M 919-424-1823 KENNESAW ,GA o
GEOMORPH INFORMATION SYSTEMS LLC GS-10F-0236X 6197877974 SAN DIEGO ,CA s/w/wo/ew/d/h
GEOGRAPHIC RESOURCE SOLUTIONS INC GS-10F-0451N 707-822-8005 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 7039955373 FAIRFAX ,VA o
GEM TECHNOLOGY INTERNATIONAL, CORP. GS-00F-0001R 305.447.1344 MIAMI ,FL s/w/wo/ew/d
GARCIA AND ASSOCIATES GS-10F-0389R (415)458-5803 SAN ANSELMO ,CA o  
GANNETT FLEMING, INC. GS-00F-114CA (703) 277-9505 CAMP HILL ,PA o
G2 ARCHAEOLOGY 47QRAA20D001G 3102783100 RENO ,NV s/w/wo/d
G.E.C., INC. 47QRAA19D001J 2256124178 BATON ROUGE ,LA o
G B K PARTNERSHIP, LLC, THE GS-10F-0413M 405-285-5349 OKLAHOMA CITY ,OK s/d/h
FUGRO EARTHDATA, INC. GS-10F-0444P 301-948-8550 FREDERICK ,MD 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 RONKONKOMA ,NY s
FOURTUNE 4, INC.
(DBA: EAC ENVIRONMENTAL ASSESSMENTS CONSULTING)
GS-10F-181BA 9413788844 SARASOTA ,FL s
FOOTHILLS ENVIRONMENTAL, INC. GS-10F-0374S 303-232-2660 LAKEWOOD ,CO s/d
FIRST ENVIRONMENT, INC. GS-10F-0178R 9733340003 BOONTON ,NJ s/dv
FAR WESTERN ANTHROPOLOGICAL RESEARCH GROUP, INC. GS-10F-0183P 530-756-3941 DAVIS ,CA s
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
ESS GROUP, INC. GS-10F-0080W 401-330-1260 RIVERSIDE ,RI s
ESPINOZA CULTURAL SERVICES, LLC 47QRAA20D0062 719-298-1780 LA JARA ,CO s/w/wo/ew/d/8a/h
ESP ASSOCIATES, INC. GS-10F-189BA 336-232-5213 FORT MILL ,SC o
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
ENVIROSCIENCE, INC. GS-10F-0181U 330-688-0111 STOW ,OH s
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 415-896-5900 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 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 14155440440 BOULDER ,CO s
ENVIRONMENTAL LAW INSTITUTE, THE GS-10F-0330P 2029393834 WASHINGTON ,DC o
ENVIRONMENTAL INCENTIVES, LLC GS-00F-193DA 5305412980 SOUTH LAKE TAHOE ,CA s
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 8655219898 ALCOA ,TN s/w/wo
ENVIRONMENTAL COMPLIANCE CONSULTANTS, INC       GS-10F-0018V 907 644-0428 ANCHORAGE ,AK s/dv/h
ENVIRONMENTAL CHEMICAL CORPORATION GS-10F-0091M 650-347-1555 BURLINGAME ,CA s
ENVIRONMENTAL BUSINESS PARTNERS, LLC GS-10F-0363T 9042874200 YULEE ,FL s/dv
ENVIRONMENT INTERNATIONAL LTD GS-10F-0069L 2065253362 SEATTLE ,WA s/w/wo/d/h
ENVIRON-CIVIL ENGINEERING, LTD GS-00F-317CA 4102905950 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 925-969-0750 MARTINEZ ,CA o
ENGINEERING & ENVIRONMENT, INC. GS-10F-0082L 7574570002 VIRGINIA BEACH ,VA s
ENDYNA, INC.       GS-00F-0017Y 7038488840 MCLEAN ,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
EHS-INTERNATIONAL, INC. GS-10F-0400S 206-381-1128 SEATTLE ,WA s/d
ECS MID-ATLANTIC, LLC 47QRAA19D006M 703-810-1224 CHANTILLY ,VA o
ECS FEDERAL, INC. GS-00F-072CA 571-232-1412 FAIRFAX ,VA o
ECOSYSTEM SCIENCES GS-00F-277DA 208-383-0226 BOISE ,ID s
ECOSYSTEM RESEARCH GROUP LLC GS-10F-0288P 406-721-9420 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 X115 MESA ,AZ s
ECOLOGICAL SOLUTIONS GROUP LLC GS-10F-0002V 406-777-1881 STEVENSVILLE ,MT s
ECODIT LLC 47QRAA19D00DN 703-841-1883 ARLINGTON ,VA s
ECOANALYSTS INC       GS-10F-0050U 208-882-2588X21 MOSCOW ,ID s
ECO & ASSOCIATES INC GS-10F-0371U 714-289-0995 TUSTIN ,CA s/w/d/8a
EARTH SMART ENVIRONMENTAL SOLUTIONS, LLC GS-00F-099DA 240-298-5702 WINTER GARDEN ,FL s/dv
EARTH RESOURCES TECHNOLOGY, INC. GS-00F-109CA 301-323-1435 LAUREL ,MD o
EA ENGINEERING, SCIENCE, AND TECHNOLOGY, INC., PBC 47QRAA19D005G 410-527-2402 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
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 CONSULTANTS LLC GS-00F-280CA (703) 206-0812 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
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 7722193000 STUART ,FL o
CRS CONSULTING ENGINEERS, INCORPORATED       47QRAA19D004X 1-801-359-5565 SALT LAKE CITY ,UT s/d
CRITERION LABORATORIES INC GS-10F-0311X 2152441300 BENSALEM ,PA s
CORNERSTONE ENVIRONMENTAL CONSULTING, LLC       47QRAA19D0057 928-522-4148 FLAGSTAFF ,AZ s/d
COREPROBE INTERNATIONAL, INC. GS-00F-012DA (626)309-9932 SAN GABRIEL ,CA s/d  
COPPERHEAD ENVIRONMENTAL CONSULTING, INC 47QRAA18D00CR 8599259012 PAINT LICK ,KY s
CONSULTECH ENVIRONMENTAL, LLC 47QRAA20D003M (727)831-7585 APEX ,NC s/w/wo/ew/d    
CONCURRENT TECHNOLOGIES CORPORATION GS-00F-0072M 814-269-6576 JOHNSTOWN ,PA o
COMPREHENSIVE ENVIRONMENTAL INC. 47QRAA18D00DM 603-424-0564 BOLTON ,MA s/w/wo/ew/d
COMMONWEALTH HERITAGE GROUP,INC. GS-00F-261DA 5177883550 DEXTER ,MI s
COLLABORATIVE, INC. THE       GS-00F-0017R 978-790-8581 BOSTON ,MA s/d
COLLABORATIVE INC, THE GS-10F-0147V 303-442-3601 BOULDER ,CO s
COLEMAN, JASON A
(DBA: SOLANO ARCHAEOLOGICAL SERVICES)
GS-10F-0342T 707-718-1416 DIXON ,CA s
CLEAN VENTURE, INC. GS-10F-0254N 8568638778 AVENEL ,NJ o
CLEAN HARBORS ENVIRONMENTAL SERVICES, INC. GS-10F-0270M 972-265-2456 NORWELL ,MA o
CLARK GROUP, LLC, THE GS-10F-0150W 802-917-0581 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
CHLOETA FIRE, L.L.C. GS-10F-049BA 877-245-6382 JAY ,OK s/d/8a/h
CHESAPEAKE ENVIRONMENTAL COMMUNICATIONS, INC. 47QRAA18D005E 804-832-0630 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
CHEROKEE NATION GOVERNMENT SOLUTIONS GS-00F-174CA 303-277-1444 CATOOSA ,OK s
CDM FEDERAL PROGRAMS CORPORATION GS-00F-085CA 303-383-2300 FAIRFAX ,VA o
CASTLE HILL ASSOCIATES, LLC 47QRAA18D00BP 5679520212 WATERVILLE ,OH s/w/wo/dv/d
CADMUS GROUP LLC, THE       GS-00F-227CA 617-673-7000 WALTHAM ,MA o
CABRERA SERVICES INC. 47QRAA18D000H 860-569-0095 EAST HARTFORD ,CT s/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 GS-10F-0129L 5058848300 ALBUQUERQUE ,NM s/d/8a
BRATSLAVSKY CONSULTING ENGINEERS, INC. GS-00F-071CA 9072807619 ANCHORAGE ,AK s/w/wo/ew/d
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 BERWYN ,PA s/w/wo/ew/8a
BIODIVERSITY RESEARCH INSTITUTE INC GS-10F-226AA 207-887-7160 PORTLAND ,ME o
BIO-WEST, INC. GS-10F-0331S 435-752-4202 LOGAN ,UT s
BHATE ENVIRONMENTAL ASSOCIATES, INC. 47QRAA19D004S 205-918-4044 BIRMINGHAM ,AL s
BHATE ENVIRONMENTAL ASSOCIATES, INC. GS-10F-0312K (205)918-4000 BIRMINGHAM ,AL s  
BBJ GROUP LLC GS-10F-0471X 312-644-8556 X221 CHICAGO ,IL s
BB&E, INC. GS-10F-0103N 2484899636 NORTHVILLE ,MI s
BATTELLE MEMORIAL INSTITUTE GS-00F-084CA 614-424-4647 COLUMBUS ,OH o
BAT ASSOCIATES, INC. GS-10F-0123L 8653632430 OAK RIDGE ,TN o
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 3039992152 DENVER ,CO s/w/wo/ew/d/h
AXIS MANAGEMENT GROUP LLC 47QRAA18D007F 540-338-5071 MCLEAN ,VA s/w/wo/ew/d/8a
AVATAR ENVIRONMENTAL LLC GS-10F-0090N 6106479500 WEST CHESTER ,PA s/dv
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. GS-00F-007AA 813-281-4584 TAMPA ,FL o
ATI, INC. 47QRAA18D00E9 4109923424 COLUMBIA ,MD s/d/8a
ATCS, P.L.C. GS-10F-0040V 703-430-7500 HERNDON ,VA o
ATC GROUP SERVICES LLC GS-10F-0458N 7208375628 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 505-466-3162 SANTA FE ,NM s/w
ASM AFFILIATES INC 47QRAA19D0092 3102783100 CARLSBAD ,CA s
ASM AFFILIATES INC GS-10F-0373N (310) 278-3100 X101 CARLSBAD ,CA s
ASIR, LLC GS-10F-0249X 505-247-9337 ALBUQUERQUE ,NM s
ARS ALEUT REMEDIATION LLC GS-00F-300GA 803-442-7661 PORT ALLEN ,LA s/d/8a
ARM ENVIRONMENTAL SERVICES INC GS-10F-0201N (803)783-3314 COLUMBIA ,SC s  
ARCHAEOLOGICAL CONSULTING SERVICES, LTD. GS-10F-0224P 480-894-5477 TEMPE ,AZ s/w
ARC ENVIRONMENTAL, INC. GS-10F-0007S 4106599971 BALTIMORE ,MD s
AQUAETER, INC. GS-10F-0188X 6153738532 BRENTWOOD ,TN s/d
APPLIED RESEARCH ASSOCIATES, INC. GS-00F-341CA 505-214-8125 ALBUQUERQUE ,NM o
APPLIED MARINE SCIENCES, INC 47QRAA19D005B 925-373-7142 LIVERMORE ,CA s
APPLIED INTELLECT GS-10F-026BA 571-510-0862 WEXFORD ,PA s/d/8a
APPLIED ENVIROSOLUTIONS INC GS-10F-0324S 4808397000 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
ANAMAR ENVIRONMENTAL CONSULTING, INC. GS-10F-091CA 3523779168 GAINESVILLE ,FL s/w/wo
ANALYSIS, PLANNING AND MANAGEMENT INSTITUTE, INC. 47QRAA19D0047 (844)470-8802 CULPEPER ,VA o    
AMERICAN COMPLIANCE TECHNOLOGIES, INC
(DBA: A-C-T ENVIRONMENTAL & INFRASTRUCTURE)
GS-00F-302DA 8635332000 BARTOW ,FL s
ALTHOUSE & MEADE INC 47QRAA19D005T 805-237-9626 PASO ROBLES ,CA s/w/wo/d
ALTA ARCHAEOLOGICAL CONSULTING LLC 47QRAA18D009U 707 544 4206 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 EXT 6 COCOA ,FL s/v
ALPHA FACILITIES SOLUTIONS, LLC 47QRAA20D000T 2106013190 SAN ANTONIO ,TX s/dv/d
ALLIANT CORPORATION GS-10F-0110V 865-363-0726 KNOXVILLE ,TN s/dv
ALLIANCE SOLUTIONS GROUP, INC. GS-10F-0272W 757-223-7233 NEWPORT NEWS ,VA s/dv
ALISTO ENGINEERING GROUP, INC. GS-10F-0080M (925)279-5000 WALNUT CREEK ,CA s  
ALFRED BENESCH & COMPANY GS-10F-0181W 4024792200 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 CHEYENNE ,WY 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
AEROSOL MONITORING & ANALYSIS GS-10F-0386K (410)684-3327 HANOVER ,MD s/d  
AERO E H & S INC GS-10F-0379Y 410-480-3636 ELLICOTT CITY ,MD s
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 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
ABR INC 47QRAA20D0010 (907) 455-6777 EXT. FAIRBANKS ,AK s
ABR INC GS-10F-0175M 907-455-6777 FAIRBANKS ,AK s
AARCHER INC GS-10F-0451M 4108979100 ANNAPOLIS ,MD s
A.D. MARBLE & CO., INC. GS-00F-411GA (484)533-2560 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