Skip to main content

Mixmaster

MXMS Incident Position Description

The Mix Master provides oversight and support of the Wildland Fire Chemicals (WFC) mixing and loading operations. The MXMS reports to the Airtanker Base Manager (ATBM), Single Engine Airtanker Manager (SEMG), or Dip Site Manager. The MXMS works in the Air Operations functional area.

Leadership Level 2, New Leader (Convey Intent)

  • For additional information review Level 2 description, expected behaviors and knowledge, suggested development goals, and self-study opportunities.

Prepare and Mobilize

  • Ensure individual readiness.
  • Gather critical information pertinent to the assignment.
  • Travel to and check in at assignment.
  • Review Base Operations Plan and obtain initial briefing from supervisor.

Build the Team

  • Identify personnel assigned to the mixing crew and maintain accountability. Confirm that the Base Operations Plan or relevant plan has been reviewed with assigned resources.
  • Assemble assigned personnel.
  • Establish and communicate: chain of command; reporting procedures; risk management processes.
  • Establish a common operating picture with supervisors and subordinates.
  • Participate in operational briefings as directed and brief assigned personnel.
  • Obtain and distribute relevant directions, plans, and other information.

Supervise and Direct Work Assignments

  • Establish and communicate objectives, priorities, work assignments, and performance expectations.
  • Identify, analyze, and use relevant situational information to make more informed decisions and take appropriate actions.
  • Adjust actions based on changing information and evolving situation awareness. Develop and implement contingency plans. Communicate changing conditions to assigned resources and supervisor.
  • Ensure daily operational objectives and performance standards are met.
  • Monitor performance and provide immediate and regular feedback to assigned personnel.

Perform Mix Master-Specific Duties

  • Obtain daily or more frequent briefings from supervisor.
  • Provide leadership and direction to the mixing/loading crew during mixing/loading operations.
  • Ensure WFC products are mixed per the Qualified Products List (QPL) and tested prior to being loaded into aircraft.
  • Ensure aircraft are loaded per contract specifications.
  • Work with supervisor to maintain an adequate WFC products inventory based on current and expected activity.
  • Check all equipment such as valves, hoses, pumps, and tanks for operability and ensures agency and OSHA safety measures are in place (e.g., pump shaft guards, fan belt shields, splash guards, wiring integrity, sealed switch boxes, safety signs, and placards, etc.).
  • Request personnel and equipment necessary to perform operations safely and efficiently.
  • Plan the specific layout of the mix plant.
  • Ensure cleanliness of the mix plant.
  • Comply with the Lot Acceptance and Quality Assurance (LAQA) program for all WFC products.
  • Ensure only approved WFC products are utilized and mixed according to the QPL.
  • Utilize refractometer, Marsh Funnel, and mass flow meter to ensure contract compliance.
  • Develop a recirculation schedule.
  • Report and log pounds and gallons and validate as requested.
  • Provide for the safety and welfare of personnel working around the mix plant by using the risk management process.
  • Report all hazards and incidents/accidents immediately to supervisor.
  • Maintain records of all equipment, replacement parts, catalogs, technical manuals, and Safety Data Sheets (SDS).
  • Ensure OSHA regulations for mix plant safety are in place and properly documented in conjunction with supervisor.
  • Ensure compliance with state and federal EPA regulations for storage and handling of WFC products, hazardous waste, and wastewater in conjunction with supervisor.

Communicate and Coordinate

  • Follow established processes and chain of command for collecting, producing, and distributing information.
  • Report any hazardous conditions to supervisor and ensure appropriate action is taken.
  • Participate in After Action Reviews (AAR).

Manage Risk

  • Consider your skill level and limitations and work within them.
  • Apply the Risk Management Process as stated in the NWCG Incident Response Pocket Guide (IRPG), PMS 461.
  • Report all accidents or injuries to supervisor.
  • Ensure compliance with all safety practices and procedures for yourself and those around you.

Document

Demobilize

  • Follow demobilization instructions from supervisor.
  • Ensure incident and agency demobilization procedures and work/rest standards are followed.

Return to top

USWDS Paragraph Bundles

Please Provide Feedback

Indicates required field

NWCG values your constructive input and we thank you for taking the time to provide feedback.

Although contact information is optional, we hope that you provide a way for us to contact you in case we need clarification on your comment. If you would like to be contacted regarding your feedback, you must provide contact information. 

Would you like a response?
If you would like a response, you must provide contact information (name and email) below.
One file only.
9.28 GB limit.
Allowed types: gif, jpg, jpeg, png, bmp, eps, tif, pict, psd, txt, rtf, html, odf, pdf, doc, docx, ppt, pptx, xls, xlsx, xml, avi, mov, mp3, mp4, ogg, wav, bz2, dmg, gz, jar, rar, sit, svg, tar, zip.
CAPTCHA
Image CAPTCHA
Enter the characters shown in the image.
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Last Modified / Reviewed:

NWCG Latest Announcements

EMC Memo 25-001: Interim Rapid Extraction Module (REMS) Training and Qualification Requirements

Date: June 3, 2025
Questions?  Please contact:
Emergency Medical Committee

The Emergency Medical Committee has issued interim guidance for Rapid Extraction Module Support (REMS) teams. Until further notice, Type I and II REMS teams must designate a team leader qualified at Firefighter Type 1 Squad Boss (FFT1) or higher. This temporary change replaces the Single Resource Boss (SRB) requirement, which is currently not feasible due to administrative barriers.

This memorandum does not include any other changes to the NWCG Standards for Rapid Extraction Module Support, PMS 552. This interim change takes effect immediately and will remain in place until further notice.

References:

EMC Memo 25-001: Interim Rapid Extraction Module (REMS) Training and Qualification Requirements

NWCG Standards for Rapid Extraction Module Support, PMS 552

Equipment Bulletin 25-002: Chaps, Chain Saw, M-2020, Nonconformities Affecting Use, Appearance, and Serviceability

Date: June 2, 2025
Questions?  Please contact:
Equipment Technology Committee

The Equipment Technology Committee issued Equipment Bulletin: 25-002 to address a manufacturing nonconformity affecting Forest Service specification, 6170-4K Chain Saw Chaps. The issue applies to chaps manufactured in 2024 and 2025 and distributed through FedMall. These chaps may have incorrectly bound edges that expose inner protective layers.

Independent purchasers should inspect all chain saw chaps received from FedMall beginning in 2024, prior to use. Review the full Equipment Bulletin: 25-002 for inspection criteria and recommended actions.

References:

NWCG Alerts

ETC Equipment Bulletin: 25-002

2024 Wildland Fire Emergency Medical Service Awards

Date: May 22, 2025
Questions?  Please contact:
Emergency Medical Committee

The NWCG Emergency Medical Committee (EMC) is proud to announce the recipients of the 2024 Wildland Fire Emergency Medical Service Awards. Each year, EMC recognizes individuals and groups who have demonstrated exceptional actions or accomplishments that go above and beyond their normal mission or job duties.

Congratulations to all the awardees and nominees. Through leadership and initiative, they have made significant contributions to the safety and well-being of the wildland fire community. These honors are well deserved.

References:

2024 Wildland Fire EMS Awards

NWCG Emergency Medical Committee

NWCG Welcomes the Incident Management Teams Association as an Associate Member

Date: May 21, 2025
Questions?  Please contact:
https://www.nwcg.gov/contact-us

The NWCG Executive Board is honored to announce that the Incident Management Teams Association (IMTA) has joined the National Wildfire Coordinating Group as an associate member.

IMTA is a dedicated group of incident management professionals committed to enhancing the profession by promoting standards and fostering collaboration across federal, state, local, Tribal, and private sector partners throughout all phases of incident management.

“Joining NWCG aligns with our mission to elevate incident management professionals nationwide,” said Dr. Randal Collins, President of IMTA. “This is a proud moment for all of us committed to advancing public safety.”

References:

Incident Management Teams Association

National Wildfire Coordinating Group