Three Rivers Community College

ENV 2101 Principles of Environmental Engineering I

Instructor: Anthony Benoit

Office: Room 201B (860) 885-2386

Fall ‘02

abenoit@trcc.commnet.edu

http://environmentalet.org/env2101

Problem

Answer

5.16

(a) 270 mg/L
(b) 137 mg/L
(c) 227 mg/L

5.23

minimum DO = 2.0 mg/L

5.28

(a) 87.9 mi
(b) 0.4 mg/L
(c) 48%

6.3

(a) 85.1 mg/L as CaCO₃
(b) 100.9 mg/L as CaCO₃

6.7

(a) 11.8 mg/L Na⁺
(b) TH = 141 mg/L as CaCO₃

6.8

3,638 mg/L