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Noxious Weed/Hazardous Waste 
6245 Tuttle Crk Blvd
Manhattan, KS 66503
Phone:785-539-3202
Fax:785-565-6288
Link: www.rileycountyks.gov/noxiousweed

Office Hours:
Monday-Friday, 7:30 a.m. to 4:00 p.m.
Staff
Name Title Email Phone
Peterson, Dennis Noxious Weed Director 785-539-3202
Hageman, Gary Commercial Pesticide Applicato 785-539-3202
Hannan, Brian Roadside Maintenance 785-539-3202
Hanson, Lori Administrative Assistant II 785-539-3202
Powell, Vaughn Commercial Pesticide Applicato 785-539-3202
Yenzer, Gary "Red" Hazardous Waste Program Coordinator/Assistant Dire 785-539-3202




Riley County Offices: 110 Courthouse Plaza, Manhattan, KS 66502
Phone: (785) 565-6200 Fx: (785) 537-6394