Data Quality Assurance

David Waterstreet, Program ManagerWatershed Program307-777-6709
Clean Water Act (CWA) Section 401 Certification and Turbidity Waivers  
Eric Hargett (Cheyenne)CWA Section 401 Certification, Turbidity Waivers307-777-6701
Data Quality Assurance and Quality Control (QA/QC)  
Jillian Scott (Cheyenne)Data QA/QC307-777-6372
Nonpoint Source Pollution Program  
Alexandria Jeffers (Cheyenne)Nonpoint Source Program307-777-6733
Surface Water Monitoring Program  
Jeremy Zumberge, Program Supervisor (Sheridan)Surface Water Monitoring Program307-675-5638
Tavis Eddy (Lander)Surface Water Monitoring Program307-335-6957
Eric Hargett (Cheyenne)Surface Water Monitoring Program307-777-6701
Jason Martineau (Sheridan)Surface Water Monitoring Program307-675-5632
Triston Rice (Cheyenne)Surface Water Monitoring Program307-777-6353
Chad Rieger (Sheridan)Surface Water Monitoring Program307-675-5637
Michael Wachtendonk (Lander)Surface Water Monitoring Program307-335-6751
Surface Water Quality Standards  
Lindsay Patterson, Program Supervisor (Cheyenne)Surface Water Quality Standards307-777-7079
Kelsee Hurschman (Cheyenne)Surface Water Quality Standards, Harmful Cyanobacterial Blooms307-777-2073
Madeleine Hamel (Cheyenne)Surface Water Quality Standards, National Environmental Policy Act (NEPA)307-777-7050
Total Maximum Daily Load (TMDL) Program  
Ron Steg, Program Lead (Lander)Total Maximum Daily Load (TMDL)307-335-6980
Bret Callaway (Cheyenne)Total Maximum Daily Load (TMDL)307-777-5802
Water Quality Lab  
Steve Vien, Lab Supervisor (Cheyenne)Water Quality Lab307-777-7654
Alexandra Cook (Cheyenne)Water Quality Lab307-777-7151
Marisa Latady (Cheyenne)Water Quality Lab307-777-6783
Vacant (Cheyenne)Water Quality Lab307-777-3770
Electronic Documents Submittal

Electronic document submittal is available for WQD permit applications, reports, and other communications.
Visit:  WDEQ Water Quality Division Downloads

You do NOT need to follow up the electronic submission with a hard copy submission unless you are specifically contacted by a WQD staff person with a request to do so.

Need to report a spill or complaint? Please visit

Submitting a public comment? WQD is unable to accept public notice comments through this system. Refer to the public notice document for instructions on how to submit comments or visit

NOTICE: All applications for water distribution systems and/or sewage collection systems that are within the Cheyenne Board of Public Utilities (BOPU) district shall be submitted to the BOPU for approval. Contact Frank Strong or Bryce Dorr at (307) 637-6460,, or for additional information.

Standard Operating Procedures

This page contains downloadable standard operating procedures with important information for practicing correct methods, procedures, and techniques. Adhering to these practices helps ensure environmental data quality and quality control.


This page contains downloadable versions of Water Quality Division Quality Assurance Program Plans (QAPPs).

These documents include important information that establishes the degree of state-defined data credibility. Included are explanations of a variety of program/project requirements, procedures, and instructions.


This page contains current and previous years’ Quality Assurance/Quality Control Annual Reports.

These documents contain information on activities which were conducted for Quality Assurance/Quality Control during the listed year.

The 2022 WQD Data Quality Assurance Program Annual Report is available in an ArcGIS Story Map format and can be accessed here.


Guidance Documents

This page contains a variety of downloadable Guidance documents that contain important information on Data Quality Assurance procedures and policies.

If you are unable to open the documents below, click here.

Related Programs

The Data Quality Assurance Program oversees all sections in the Water Quality Division. The underlying goal is to ensure that all environmental data (e.g., field-collected data, scientific literature) aligns with standard scientific methods, state statutes, and federal regulations for defensible decision-making. These objectives are accomplished by establishing QA/QC procedures, developing guidance and policy, and providing training and audits to ensure data credibility and compliance with state and/or federal requirements.

Each year, federal, state, private and public groups or agencies, industry, academic researchers and interested citizen organizations spend increasing amounts of time and money on water quality monitoring, data analyses and interpretation.

In order for the information gathered to be useful to other interested parties and to be used for an accurate, cost-effective and efficient assessment of water quality, all monitoring data must come from comparable project design, methods (including QA/QC), analyses and interpretation.

Collaboration among water quality monitoring programs and organizations is possible if there is a technical and administrative framework to promote data comparability and to assure data of known quality. In addition, environmental issues and related data operations are becoming increasingly complex.

Existing and anticipated environmental decision-making objectives drive the need to establish a systematic process and structure. Establishing these characteristics will ensure the data quality and consistency that decision-makers must have if they are to have confidence in the data that supports their decisions. 

Environmental data include any measurements or information that help describe:

  • Environmental processes, location, and conditions
  • Ecological and human health effects
  • The performance of environmental technology 
  • Information collected directly from measurements

Environmental data quality assurance and quality control are achieved by adhering to established methods, procedures, and techniques.


Jillian Scott
WQD QA Officer