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Region 7 Contacts

Biosolids Coordinator

Tanya Nix, WIMB
USEPA Region 7
Water, Wetlands & Pesticides Division
901 N. 5th Street
Kansas City, KS 66101
Tel: 913-551-7170
Fax: 913-551-7765
nix.tanya@epa.gov  

Berla Jackson-Johnson, WENF
Tel: 913-551-7720
Fax: 913-551-7765
jackson-johnson.berla@epa.gov 

Pretreatment Coordinator

Paul Marshall, P.E.
U.S. EPA - Region 7
726 Minnesota Avenue
Kansas City, KS 66101
Tel: 913-551-7419
Fax: 913-551-7765
marshall.paul@epamail.epa.gov  
or
Other Contact: Mike Turvey (913) 551-7424

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Region 7: Iowa

Iowa | KansasMissouri | Nebraska 

State Contacts

Biosolids Coordinator
Billy Chen

IA Dept. of Water, Air & Waste Mgmt.

Henry A. Wallace Building

900 East Grand

Des Moines, IA 50319

Tel: 515-281-4305

Fax: 515-281-8895

billy.chen@dnr.state.ia.us  

Pretreatment Coordinator
Steve Williams

Environmental Specialist 

Iowa Department of Natural Resources

Wallace State Office Building 

900 East Grand 

Des Moines, IA 50319 

Tel: 515-281-8884

Fax: 515-281-8895 

swillia@max.state.ia.us