As the executive director of the Western Lake Superior Sanitary District (WLSSD) prepares to leave her post, the WLSSD fired up a trio of generators that now convert biogas from […]
As the executive director of the Western Lake Superior Sanitary District (WLSSD) prepares to leave her post, the WLSSD fired up a trio of generators that now convert biogas from […]
Duluth sewage plant turns waste to resource as leader departs