SERVICE, WATER QUALITY ANALYSES & MODELING SERVICE WILLIAM W WALKER JR $145,000 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services B533 SPECIAL STUDIES/ANALYSIS- WATER QUALITY Sep 5, 2025 Sep 5, 2025 Sep 30, 2026
SERVICE, WATER QUALITY ANALYSIS AND MODELING SERVICES WILLIAM W WALKER JR $165,000 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services B533 SPECIAL STUDIES/ANALYSIS- WATER QUALITY Sep 18, 2024 Sep 18, 2024 Sep 30, 2025
SERVICE, WATER QUALITY PROGRAM TECHNICAL SERVICES FOR SFNRC WILLIAM W WALKER JR $268,540 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services B533 SPECIAL STUDIES/ANALYSIS- WATER QUALITY May 2, 2023 May 2, 2023 Sep 30, 2024
IGF::OT::IGF, X:NOGRN, WATER QUALITY PROGRAM TECHNICAL SERVICE FOR EVERGLADES NATIONAL PARK WILLIAM W WALKER JR $1,165,574 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services AJ36 Aug 22, 2017 Aug 22, 2017 Feb 17, 2023
IGF::OT::IGF, X:NOGRN, SINGLE AWARD IDIQ, TASK ORDER FOR UNIQUE SERVICES PROVIDED BY DR. WILLIAM WALKER JR. FOR WATER QUALITY TESTING AND CONSULTING IN EVERGLADES, OPTION YEAR ONE. WILLIAM W WALKER JR $236,510 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services R425 SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL Jul 26, 2015 Jul 26, 2015 Jul 30, 2017
IGF::OT::IGF PERFORM WATER QUALITY WILLIAM W WALKER JR $249,615 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services R425 SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL Sep 18, 2014 Sep 18, 2014 Sep 30, 2016
IGF::OT::IGF PREFORM WATER QUALITY WILLIAM W WALKER JR $119,970 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services R425 SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL Mar 20, 2014 Mar 20, 2014 Sep 30, 2014
IGF::OT::IGF PERFORM WATER QUALITY VARIABLES WILLIAM W WALKER JR $60,000 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541620 Environmental Consulting Services R425 SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL Aug 21, 2013 Aug 21, 2013 Sep 30, 2014
IGF::OT::IGF PERFORM WATER QUALITY VARIABLES WILLIAM W WALKER JR $136,322 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541330 Engineering Services AJ33 Jul 23, 2013 Jul 23, 2013 Feb 24, 2016
IGF::OT::IGF ENGINEERING SERVICES WILLIAM W WALKER JR $265,048 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541711 AJ33 Sep 25, 2012 Sep 25, 2012 Sep 30, 2013
SERVICES FOR STATISTICAL ANALYSIS AND MODELING OF WATER QUALITY VARIABLES WILLIAM W WALKER JR $25,000 NATIONAL PARK SERVICE NATIONAL PARK SERVICE — 541690 Other Scientific and Technical Consulting Services AH34 NATURAL RESOURCES AND ENVIRONMENT R&D SERVICES; RECREATIONAL RESOURCES; R&D ADMINISTRATIVE EXPENSES Jan 14, 2011 Jan 14, 2011 Sep 10, 2011
EXPERT WITNESS WILLIAM W WALKER JR $157,958 OFFICES, BOARDS AND DIVISIONS OFFICES, BOARDS AND DIVISIONS — 541199 All Other Legal Services R424 SUPPORT- PROFESSIONAL: EXPERT WITNESS Nov 18, 2010 Nov 18, 2010 Jun 30, 2016
EXPERT WITNESS DR. WILLIAM W. WALKER 1127 LOWELL ROAD CONCORD, MA 01742 WILLIAM W WALKER JR $0 OFFICES, BOARDS AND DIVISIONS OFFICES, BOARDS AND DIVISIONS — 541199 All Other Legal Services R424 SUPPORT- PROFESSIONAL: EXPERT WITNESS Jun 9, 2010 Jun 9, 2010 Jun 30, 2015
PERFORM SERVICES RELATED TO THE IMPLEMENTATION OF EVERGLADES CONSTRUCTION PROJECTS WILLIAM W WALKER JR $0 NATIONAL PARK SERVICE — — 541690 Other Scientific and Technical Consulting Services R405 SUPPORT- PROFESSIONAL: OPERATIONS RESEARCH/QUANTITATIVE ANALYSIS Jan 28, 2010 Jan 28, 2010 Dec 31, 2010
PROVIDE EXPERT WITNESS TESTIMONY WILLIAM W WALKER JR $276,700 NATIONAL PARK SERVICE — — 541690 Other Scientific and Technical Consulting Services R405 SUPPORT- PROFESSIONAL: OPERATIONS RESEARCH/QUANTITATIVE ANALYSIS Jul 24, 2009 Jul 24, 2009 Sep 30, 2010
WITNESS TESTIMONY WILLIAM W WALKER JR $260,500 NATIONAL PARK SERVICE — — 541690 Other Scientific and Technical Consulting Services R424 SUPPORT- PROFESSIONAL: EXPERT WITNESS Aug 27, 2008 Aug 27, 2008 Aug 27, 2009
PROFESSIONAL SERVICES, TESTIMONY IN RELATION TO STATISICAL ANALYSIS AND MODELING OF WATER QUALITY VARIABLES AS PER STATEMENT OF WORK AND ACCEPTED PROPOSAL. WILLIAM W WALKER JR $269,240 NATIONAL PARK SERVICE — — 541690 Other Scientific and Technical Consulting Services R424 SUPPORT- PROFESSIONAL: EXPERT WITNESS Sep 20, 2007 Sep 20, 2007 Sep 10, 2008
EXPERT WITNESS WILLIAM W WALKER JR $53,500 OFFICES, BOARDS AND DIVISIONS — — 541199 All Other Legal Services R424 SUPPORT- PROFESSIONAL: EXPERT WITNESS Apr 25, 2006 Apr 25, 2006 Apr 24, 2008
EXPERT WITNESS WILLIAM W WALKER JR $63,950 OFFICES, BOARDS AND DIVISIONS — — 541199 All Other Legal Services R424 SUPPORT- PROFESSIONAL: EXPERT WITNESS Sep 12, 2005 Sep 12, 2005 Sep 11, 2007
— WILLIAM W WALKER JR $0 NATIONAL PARK SERVICE — — 813312 Environment, Conservation and Wildlife Organizations R422 SUPPORT- PROFESSIONAL: MARKET RESEARCH/PUBLIC OPINION Dec 15, 2002 Dec 15, 2002 Sep 15, 2007
CONSULTING SERVICES. WILLIAM W WALKER JR $1,066,421 NATIONAL PARK SERVICE — — 813312 Environment, Conservation and Wildlife Organizations F999 OTHER ENVIRONMENTAL SERVICES Aug 29, 2002 Aug 29, 2002 Sep 30, 2007
— WILLIAM W WALKER JR $0 NATIONAL PARK SERVICE — — 813312 Environment, Conservation and Wildlife Organizations R422 SUPPORT- PROFESSIONAL: MARKET RESEARCH/PUBLIC OPINION Aug 15, 2002 Aug 15, 2002 Sep 30, 2007
— WILLIAM W WALKER JR $0 DEPT OF THE ARMY — — 541710 AZ12 Jun 10, 2002 Jun 10, 2002 —