R8PA: Region 8 Pretreatment Association

About Us

The Region VIII Pretreatment Association is a group of pretreatment professionals located in EPA Region VIII who are responsible for addressing current pretreatment issues, assisting approved and non-approved pretreatment programs with pretreatment questions and providing education for all pretreatment individuals within the region.

EPA Region VIII and the Region VIII Pretreatment Association (R8PA) conjointly develop an annual Conference to address the various needs of municipal pretreatment personnel to implement the pretreatment regulations. Basic to advance pretreatment training, discussions, and presentations will be provided by local, state, and federal government representatives, as well as experts outside the government.

Who We Are

Pretreatment Association was formed in August 2009. The Association was formed to assure that all of the pretreatment professionals within the EPA Region 8 borders are invited members, fully represented, and have an equal voice in the planning and other training activities coordinated by the Association. The Executive Committee consists of elected officials from POTW pretreatment programs from each of the Region VIII states: Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming. Their primary function is to provide education to pretreatment professionals, assuring that the planning for the Annual Conference continues.

Committee Members

Leah Hall, Chair

Dustin Walton, Vice Chair


Nancie Hineline,

Adam Butterfield, Treasurer


Scott Caldwell,
State Representative for CO

Mark DeWald,
State Representative for MT


Dean Woehl,
State Representative for ND

Brad Jones,
State Representative for UT

Jacob Ward,
State Representative for WY

John Mellegard,
State Representative for SD


Christian Somoza,
Audio/Visual Technician

Al Garcia,
EPA Region 8 Pretreatment Coordinator


What We Offer

The core activities for the Association are organizing the Annual Region VIII Pretreatment Conference, promoting training and professional development and providing an opportunity for all Region VIII approved and non-approved pretreatment programs to stay informed. While not a member, EPA Region VIII will be a close partner in helping to plan and hold the Annual Conference and assure that the core activities are achieved.


The Region VIII Pretreatment Association is open to all pretreatment professionals who wish to be part of the general membership. There are no membership fees. However, there is an expectation that each member will provide input on core activities. The Region VIII Pretreatment Association depends heavily on volunteers to help achieve the association goals. Sign up today to be part of the Region VIII Pretreatment Association

Region VIII States

Colorado, Montana, North Dakota,
South Dakota, Utah and Wyoming

R8PA Annual Conference
May 2 – 4, 2023

Ruby’s Inn – Bryce Canyon, UT

Workshop Registration

View the new 2023 workshop
Agenda and Registration