Angie Reed​, Water Resources Planner  |  Penobscot Indian Nation, Indian Island, Maine

Darold has been involved with tribal air quality monitoring since 2014. He transitioned over to environmental science with Pala after working many years in information systems and technical support. Pala's environmental department started the air quality monitoring program over 20 years ago. The location of tribal reservation is a hot spot for a few ambient air quality issues. Darold has made many needed changes and improvements to the program and continues to help the tribe expand it abilities to handle its AQI issues. He says after been introduced to this field of work and meeting all the wonderful people that helped him when he started, he feels in debt and enjoys paying it forward.

Contact Darold ​- Phone: 760.891.3540 ​ |  Email: dwallick [at]


April has worked for the Cherokee Nation Environmental Programs office since February 2004 and is primarily responsible for managing the Clean Air Program. Her current duties include quality control and quality assurance of all air monitoring data, grant management, staffing and workload assignments, and uploading data into the EPA Air Quality System (AQS). April is licensed with the State of Oklahoma as a Registered Sanitarian and a Registered Environmental Specialist, is a Certified Hazardous Materials Manager (CHMM), and is a member of the National Environmental Health Association (NEHA). April began working with the Exchange Network program in 2011; the current Cherokee Nation EN grants include creating a Tribal mentoring program for ATTAINS (Assessment and Total Maximum Daily Load (TMDL) Tracking and Implementation System), providing support for Tribal representatives of the EELC, and establishing a radon data exchange via OpenNode2.  April serves on the EN Interoperability & Operations Team (IOT). 

Contact April - Phone: 918.453.5098​  |  Email: april-hathcoat[at]

The TXG is always looking for tribal professionals willing to dedicate their time and first-hand experiences to furthering their mission and promoting tribal involvement in the Exchange Network.

If you are interested in joining the TXG, complete and submit the Tribal Exchange Network Group (TXG) - Membership Request Form.




The purpose of the TXG is to promote tribal sovereignty by empowering tribes to make informed environmental decisions; facilitate access to training, resources, and tools for improving data management and exchange solutions; and communicate and collaborate with US EPA, EN, and EE partners to increase understanding of the unique tribal cultural values and environmental concerns. Review the TXG Charter.​​


Exchange Network Tribal Profiles



Bruce has over 40 years of experience working with tribes in the northwest and has been with the Northwest Indian Fisheries Commission (NWIFC) since 2007.  Since 2008, the NWIFC has been an active partner in the Exchange Network (EN), working with its 20 member tribes to successfully develop and deploy several data exchanges, including Water Quality, Nearshore, Juvenile Fish, Adult Fish, and Fish Management. Currently, NWIFC are developing a new data exchange called “Riparian and Floodplain Data Exchange,” or RFX.  Bruce’s experiences on the EN/E-Enterprise includes serving on the Network Technology Board (and previously, the Network Operations Board) and Management Board. He has been a TXG member since 2008.
Contact Bruce - Phone: 360.438.1180  |  Email: bjones [at]​ 

Linda has been the Environmental Director for Habematolel Pomo of Upper Lake (HPUL), since November of 2015. She has dedicated her efforts to protecting the environment and educating on the importance of be a “good steward to the land”. She is focused on building a strong foundation for HPUL Environmental Programs, which include Water, Air, Pesticides, Solid Waste and Geographical Information System (GIS) and Geographical Positioning System (GPS). She Is also involved in protecting Tribal Cultural Resources and is a Tribal Monitor herself. She oversees the Utilities, Emergency Response and Cemetery Maintenance. Some of her specialized skills include database creation, Database Management and Geodatabase creation and Map making. She has been a TXG member since 2009 with a 3-year hiatus and returned in 2014. Projects she is working on includes: a Restoration project on the second largest Tributary to Clearlake, to reduce Sediment and Nutrient loading, by partnering up with Mendocino National Forest to create “Natural Environmental buffers”.  

Contact Linda - Phone: 707.275.0737 ext. 20  |  Email: lrosas [at]

Lisa (Pawnee/Comanche) is the Director of the Campo Band of Mission Indians Environmental Protection Agency which is one of the oldest Tribal Environmental Agencies in the nation. Campo EPA administers a 103 Clean Air Act Program, Clean Water Act 319 and 106 Programs, GAP and a BIA funded Climate Change Program. Lisa is Campo’s delegate to the Region 9 RTOC, the National Tribal Air Association, the Western Regional Air Partnership, and is Region 9’s designee to the EPA E-Enterprise Leadership Council. Campo lands border the US/Mexico Border in the Eastern part of San Diego County in California – a fraction of the historic Kumeyaay territory. Campo is one of 12 Bands of the Kumeeyay.   

Contact Lisa - Email: lgover [at]

APRIL HATHCOAT, environmental director  |  CHEROKEE NATION environmental programs, OKLAHOMA

Frank is currently the GIS Manager for the Muscogee Nation’s (MN) Geospatial Department. Since 2009, he has guided the tribe’s GIS activities and worked with EPA’s Exchange Network. Together with the MN Environmental Services department, the tribe’s first Exchange Network grant was funded in 2011. A node was implemented and the Open Waters application was established to manage water quality data. The MN expanded the Open Waters application to incorporate additional tribal partners and built a tribal response application that would allow partner tribes to work together. More recently, the tribe was awarded funding to build real-time capabilities and a tribal portal to display and host their information in real-time. Frank currently serves on the E-Enterprise and Exchange Network Management Board as a tribal representative.

Contact Frank - Phone: 918.549.2510  |  Email: Fharjo [at]

BryAnna has worked for the Tribe’s Water Quality Control Program since 2007. The Tribe has had an Exchange Network (EN) grant since 2008. The main focus of the EN projects have been to build the Tribe’s capacity to exchange data, both to EPA and data partners, more efficiently and effectively. The Tribe collects continuous air and water data, which amounts to an enormous amount of data requiring intense data management and specialized database tools for data validation, analysis, and organization. These efforts have led to improved data management, improved submissions, better access to and analysis of climate data. Projects have also included extensive database development, both in-house and cloud-based, mainly for our continuous water quality data. Streamlining data collection is also a part of the Tribe’s data management goals. BryAnna joined the TXG in 2012 to advocate for tribal participation in the Exchange Network. She sits on the EN Interoperability and Operations Team (IOT) and various Integrated Project Teams (IPTs) as needed. In relation to this work, you will often hear her state, “Tribes are not like states, and they are even less like each other.”

Contact BryAnna - Phone: 760.873.3584  |  Email: BryAnna.Vaughan [at]

Angie has worked with Wabanaki Nations, in what is also known as Maine, on protecting the health of their waters since finishing her MS in 1998.  As the Water Resources Planner for Penobscot Indian Nation (PIN) she has written four successful Exchange Network (EN) grants.  The fourth was an EN partnership grant awarded to PIN and the Houlton Band of Maliseet Indians (HBMI) in 2020 to help both Nations take their data management, analysis and exchange systems to the next level.  She has been with TXG since 2007 and currently her focus is hands-on technical trainings that make the daily lives of tribal environmental professionals easier.  Since 2019 she has helped TXG organize two Data Carpentry workshops (in-person and virtual), host many virtual small-group R demonstration/working sessions and provide weekly virtual one-on-one R mentoring.  Angie believes that building strong data management and exchange skills in the office will help tribal environmental professionals feel more able to take advantage of the EN grant program and participate in TXG to help others.

Contact Angie - Phone:
207-356-5167​|Email: angie.reed [at]