Wastewater Grade 3 Exam – Questions With
Insightful Solutions
Specific Gravity of methane (CH4) Correct Answer - 0.55
MLSS sample stays in the oven for __ hrs Correct Answer - 1
collection system designed to provide a velocity of ___ ft/sec
Correct Answer - 2
Specific gravity of chlorine gas (Cl2) Correct Answer - 2.5
records must be kept for __ years Correct Answer - 3
DMR's are submitted on the ___ day of each month Correct Answer
- 10th
what is the lowest safe concentration level for humans to breath?
Correct Answer - 19.5
A BOD test requires an incubator temp of ___ degrees C Correct
Answer - 20
a TS sample remains in the oven for __ hrs Correct Answer - 24
passing score 3M? Correct Answer - 65
passing score 2I and 6C Correct Answer - 66 & 70
schedule 40, 60, 80 pipe, which has thickest wall? Correct Answer
- 80
wastewater is appx __% water Correct Answer - 99
, max temp degrees F allowed in a collection system Correct
Answer - 104
PVC deforms at what temp F Correct Answer - 104
TS test requires oven temp of ___ degrees F Correct Answer -
104
fusible plug on chlorine cylinder designed to melt between what
temps F Correct Answer - 158-165
CMR ____ regulates operator certification Correct Answer - 257
CMR ____ regulates the proper maintenance of WWTF's Correct
Answer - 314
MLVSS test requires a furnace temp of ____ degrees C Correct
Answer - 550
Population equivalent factor for BOD Correct Answer - 0.17
lb/day/BOD/person
samples are refrigerated at __ degrees C Correct Answer - 4
COD test time Correct Answer - 3
1.0% is ____ ppm Correct Answer - 10,000
designed for use with standard 100 & 150 lb capacity chlorine
cylinders... emergency kit "?" Correct Answer - A
designed for use with the standard chlorine ton container...
emergency kit "?" Correct Answer - B
Insightful Solutions
Specific Gravity of methane (CH4) Correct Answer - 0.55
MLSS sample stays in the oven for __ hrs Correct Answer - 1
collection system designed to provide a velocity of ___ ft/sec
Correct Answer - 2
Specific gravity of chlorine gas (Cl2) Correct Answer - 2.5
records must be kept for __ years Correct Answer - 3
DMR's are submitted on the ___ day of each month Correct Answer
- 10th
what is the lowest safe concentration level for humans to breath?
Correct Answer - 19.5
A BOD test requires an incubator temp of ___ degrees C Correct
Answer - 20
a TS sample remains in the oven for __ hrs Correct Answer - 24
passing score 3M? Correct Answer - 65
passing score 2I and 6C Correct Answer - 66 & 70
schedule 40, 60, 80 pipe, which has thickest wall? Correct Answer
- 80
wastewater is appx __% water Correct Answer - 99
, max temp degrees F allowed in a collection system Correct
Answer - 104
PVC deforms at what temp F Correct Answer - 104
TS test requires oven temp of ___ degrees F Correct Answer -
104
fusible plug on chlorine cylinder designed to melt between what
temps F Correct Answer - 158-165
CMR ____ regulates operator certification Correct Answer - 257
CMR ____ regulates the proper maintenance of WWTF's Correct
Answer - 314
MLVSS test requires a furnace temp of ____ degrees C Correct
Answer - 550
Population equivalent factor for BOD Correct Answer - 0.17
lb/day/BOD/person
samples are refrigerated at __ degrees C Correct Answer - 4
COD test time Correct Answer - 3
1.0% is ____ ppm Correct Answer - 10,000
designed for use with standard 100 & 150 lb capacity chlorine
cylinders... emergency kit "?" Correct Answer - A
designed for use with the standard chlorine ton container...
emergency kit "?" Correct Answer - B
