William Doane
GIS Analyst
GISP Approved
Active
Cert Number: 161682
Expiration: 12/25/2026 00:00:00
Zip: 21228
Kevin Donnelly
Principal, Water Resource Engineering
GISP Approved
Active
Cert Number: 90671
Expiration: 05/25/2026
Zip: 20895
Anthony Dowell
Geospatial Services Group Manager / GIS Project Manager
GISP Approved
Active
Cert Number: 56750
Expiration: 08/25/2027
Zip: 21224
Errol DuFour
Project Manager
GISP Approved
Active
Cert Number: 88130
Expiration: 10/25/2028
Zip: 20707
Kaushik Dutta
GIS Program Manager
GISP Approved
Active
Cert Number: 54875
Expiration: 05/25/2028
Zip: 21224
Thomas Earp
Manager, Innovative Technologies
GISP Approved
Active
Cert Number: 48561
Expiration: 10/25/2027
Zip: 21202
J Kirk Eby
GIS Specialist 3
GISP Approved
Active
Cert Number: 33873
Expiration: 10/25/2026 00:00:00
Zip: 20877
Elan Echevarria
Land Surveyor / Cartographer
GISP Approved
Active
Cert Number: 67719
Expiration: 01/25/2029
Zip: 21704
George Edmonds
GIS Analyst
GISP Approved
Active
Cert Number: 18630
Expiration: 10/25/2028
Zip: 21638
Gretchen Esbensen
Senior Consultant
GISP Approved
Active
Cert Number: 162002
Expiration: 01/25/2028 00:00:00
Zip: 21403
Bill Fearrington
GIS Program Manager
GISP Approved
Active
Cert Number: 84870
Expiration: 08/25/2028
Zip: 21050
Matthew Felton
President & Founder
GISP Approved
Active
Cert Number: 51940
Expiration: 04/25/2027 00:00:00
Zip: 21014
David Firman
Senior GIS and Remote Sensing Engineer
GISP Approved
Active
Cert Number: 68012
Expiration: 06/25/2026
Zip: 21701
Andrew Fitch
GIS Team Technical Lead
GISP Approved
Active
Cert Number: 99196
Expiration: 06/25/2026
Zip: 21228
Kathryn Forsythe-Majchrzak
Senior GIS Analyst
GISP Approved
Active
Cert Number: 61448
Expiration: 01/25/2028 00:00:00
Zip: 21013
Alan Foster
Sr Geospatial Analyst, IV
GISP Approved
Active
Cert Number: 160985
Expiration: 03/25/2027
Zip: 21704
Leo Fothergill
GIS Specialist
GISP Approved
Active
Cert Number: 63543
Expiration: 08/25/2028
Zip: 21202
Theresa Foye
GIS Project Manager
GISP Approved
Active
Cert Number: 91227
Expiration: 06/25/2026 00:00:00
Zip: 21122
Megan Gall
Principal
GISP Approved
Active
Cert Number: 88000
Expiration: 10/25/2028
Zip: 20910
Joseph Gann
GIS Specialist
GISP Approved
Active
Cert Number: 160553
Expiration: 12/25/2027
Zip: 21221
Feng Gao
President
GISP Approved
Active
Cert Number: 58304
Expiration: 01/25/2027
Zip: 20854
Heidemarie Gauss
Project Manager
GISP Approved
Active
Cert Number: 160651
Expiration: 07/25/2028
Zip: 21044
Susan Gidley
Sr. GIS Manager
GISP Approved
Active
Cert Number: 160652
Expiration: 07/25/2028
Zip: 20785
Joel Gladfelter
Lead Engineer / GIS Manager (P.E., GISP)
GISP Approved
Active
Cert Number: 67653
Expiration: 11/25/2028
Zip: 21102
Luciano Gomes
Project Manager
GISP Approved
Active
Cert Number: 48540
Expiration: 03/25/2027
Zip: 21114
Erin Goodnough
GIS Programmer- NASA
GISP Approved
Active
Cert Number: 91366
Expiration: 06/25/2026
Zip: 13104
Eric Goods
GIS Technician
GISP Approved
Active
Cert Number: 54030
Expiration: 06/25/2027 00:00:00
Zip: 21202
Glenn Gorman
GIS Analyst
GISP Approved
Active
Cert Number: 162245
Expiration: 07/25/2028 00:00:00
Zip: 20646
James Graham
GIS and Applications Manager
GISP Approved
Active
Cert Number: 91265
Expiration: 06/25/2026
Zip: 20814
Logan Hall
GIS Administrator
GISP Approved
Active
Cert Number: 99308
Expiration: 12/25/2026
Zip: 21811
Jeffrey Hall
GIS Analyst
GISP Approved
Active
Cert Number: 161622
Expiration: 07/25/2026 00:00:00
Zip: 21043
Heidi Hammel
Associate Director
GISP Approved
Active
Cert Number: 9067
Expiration: 11/25/2027
Zip: 21146
Peter Hanna
Firefighter/Paramedic
GISP Approved
Active
Cert Number: 90435
Expiration: 02/25/2029
Zip: 21117
Kevin Hayes
Hydrogeologist
GISP Approved
Active
Cert Number: 10660
Expiration: 09/25/2028
Zip: 20850
Martha Hoegberg
Senior GIS Project Manager
GISP Approved
Active
Cert Number: 68061
Expiration: 06/25/2026 00:00:00
Zip: 20912
Kimberly Hoffman
Sr GIS Analyst
GISP Approved
Active
Cert Number: 160872
Expiration: 08/25/2026
Zip: 21601
Charlene Howard
Principal GIS Analyst
GISP Approved
Active
Cert Number: 50706
Expiration: 11/25/2027
Zip: 20712
Guilan Huang
Regulatory Information Specialist/GIS Scientist
GISP Approved
Active
Cert Number: 39520
Expiration: 09/25/2026
Zip: 20770
Meghan Jenkins
GIS Coordinator
GISP Approved
Active
Cert Number: 90043
Expiration: 10/25/2028
Zip: 21742
Marla Johnson
GIS Professional
GISP Approved
Active
Cert Number: 67823
Expiration: 02/25/2029
Zip: 21231
Rebekah Jones
Geographer
GISP Approved
Active
Cert Number: 91113
Expiration: 06/25/2026
Zip: 20901
Jon Jones
GIS Developer
GISP Approved
Active
Cert Number: 161754
Expiration: 01/25/2027 00:00:00
Zip: 20706
Baboyma Kagniniwa
Sr Data Scientist
GISP Approved
Active
Cert Number: 91546
Expiration: 06/25/2026
Zip: 20705
Mara Kaminowitz
GIS Program Manager
GISP Approved
Active
Cert Number: 24970
Expiration: 03/25/2029
Zip: 21045
Michael Karikari
Data Manager
GISP Approved
Active
Cert Number: 91408
Expiration: 06/25/2026 00:00:00
Zip: 20735
Taylor Keen
Enterprise GIS Manager
GISP Approved
Active
Cert Number: 90321
Expiration: 01/25/2029
Zip: 20740
Sean Kelly
Survey Operations Manager
GISP Approved
Active
Cert Number: 68056
Expiration: 06/25/2026
Zip: 21701
Christopher Kephart
Project Manager
GISP Approved
Active
Cert Number: 162026
Expiration: 01/25/2028 00:00:00
Zip: 21629
Amr Keshta
Geospatial Analyst
GISP Approved
Active
Cert Number: 160856
Expiration: 06/25/2026
Zip: 21043
Mehdi Khan
Chief, Data Management Group
GISP Approved
Active
Cert Number: 45331
Expiration: 04/25/2028
Zip: 21042