The collection consists of material related to environmental issues in the Elmira area, largely compiled by APT Environment, a watchdog of Uniroyal Chemical (now Chemtura Canada Company). Fonds is comprised of the following series: Uniroyal historical, background information; Newspaper clippings; Environmental organizations; Public meetings, Open house;s Uniroyal reports; Uniroyal Public Advisory Committee (UPAC)/Crompton Public Advisory Committee/Chemtura Public Advisory Committee (CPAC); Other chemical companies; Environmental Appeal Board Region of Waterloo; Government of Ontario; Research publications, papers, articles, theses; Chemicals - articles, information; Water; Fires

Fonds consists of the papers of a group of concerned citizens of Beaver Valley, which grew into the Beaver Valley Heritage Society, and the papers, reports, minutes, publications and other material of the Beaver Valley Heritage Society. Fonds is comprised of the following series: Administrative papers; Background reports; Articles and papers; Newspaper clippings; Maps; Graphic material; Beaver Valley Concerned Citizens' Group, 1975 - 1982; Beaver Valley Heritage Society.