Environmental Engineering FOURTH EDITION

0 5 10 15 20

Miles

city of Fitchburg

Report on comprehensive plan for

Legend domestic and industrial wastewater disposal

North Nashua Rhrer predicted

@ Sampling station dlssohred oxygen mcentration

4 Camp. Dresser & McKee

Consulting Engineers AUGUST, 1968

Boxton, Massachusetts

Figure 4-8. Actual dissolved oxygen sag (going to 0; anaerobic conditions) and the projected dissolved oxygen sags if various types
of wastewater treatment are provided. (Courtesy of Camp Dresser & McKee, Boston, MA.)