Minnesota Pollution Control Agency (MPCA)

Duluth - Laura MacArthur School

Duluth, USA

St. Paul - Downtown

Saint Paul, USA

Minneapolis - Andersen School

Minneapolis, USA

Shakopee Station

Shakopee, USA

St. Cloud

Saint Cloud, USA

St. Paul-Harding H.S.

Saint Paul, USA

St. Michael - Elementary School

Saint Michael, USA

Minneapolis - Bottineau/Marshall Terrace

Minneapolis, USA

Duluth-WDSE

Duluth, USA

Lakeville - Near Road

Lakeville, USA

Rochester Station

Rochester, USA

MPCA-Dakota Lane

Chanhassen, USA

Brainerd Lakes Regional Airport

Brainerd, USA

Apple Valley Station

Apple Valley, USA

MPCA-Mankato West High School

Mankato, USA

Fond du Lac

Cloquet, USA

Minneapolis-Lowry Ave

Minneapolis, USA

Minneapolis-Near Road

Minneapolis, USA

Detroit Lakes Station

Detroit Lakes, USA

Minneapolis-Pacific St

Minneapolis, USA

Blaine - Anoka County Airport (NCore)

Blaine, USA

Leech Lake Nation: Cass Lake

Cass Lake, USA

Marshall - Southwest Minnesota Regional Airport

Marshall, USA

Grand Portage Station

Grand Portage, USA

Virginia City Hall

Virginia, USA

Red Lake Nation

Red Lake, USA

Ely Station

Ely, USA

Marine on St. Croix

Marine on Saint Croix, USA

Mille Lacs

Onamia, USA

U of M Cedar Creek Ecosystem Science Reserve

Bethel, USA

Stanton Air Field

Dennison, USA