Nebraska State Of--environmental Quality, Air/waste Mgmnt Division, Intergrated Waste Mgmnt North Platte, NE 69101 Phone : (308) 535-8141 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools Environmental-air Quality Division 200 S Silber Ave North Platte, NE 69101 Phone : (308) 535-8141 Business Category Environmental Conservation & Ecological Services