PMT 108 WATER FINAL EXAM ACTUAL QUESTIONS AND
SOLUTIONS RATED A+
✔✔When disinfecting a water tank, how long should keep interior surfaces wet with
solution? - ✔✔60 minutes
✔✔What are the chlorine residual requirements for: Point of production? - ✔✔2.0 ppm
✔✔What are the chlorine residual requirements for: Point of distribution - ✔✔1.0 ppm
✔✔What are the chlorine residual requirements for: Point of consumption? - ✔✔0.2 ppm
✔✔When using Calcium hypochlorite to disinfect water, how long should contact time
for any container? - ✔✔30 minutes
✔✔In which purification zone is the general impact:
- High turbidity
- Sludge Deposits form on stream bed
- Dissolved oxygen reduced to less than one half original value - ✔✔Zone of degradtion
✔✔In which purification zone is the general impact:
- Low dissolved oxygen (DO) or none at all
- Scum may be floating on surface
- Odors from purification of organic matter including hydrogen sulfide and methane
gases are given off
- Water is darker and grayish in color - ✔✔Zone of Active decomposition
✔✔In which purification zone is the general impact:
- Turbidity decreases
- DO gradually increases
- No unpleasant odors given off - ✔✔Zone of recovery
✔✔In which purification zone is the general impact:
- Clean water
- DO approaches saturation
- Natural stream conditions are restored - ✔✔Zone of Cleaner water
✔✔In which purification zone is the Plant and animal life impact:
- Worms, snails, sewage fungi increase
- Fish life changes from game and food species to coarse
- Overall, algae and fish life decline - ✔✔Zone of degradtion
✔✔In which purification zone is the Plant and animal life impact:
- No fish present
, - Anaerobes present
- Sludge worms become numerous
- Threadlike organisms of grayish pink and cream tint appear - ✔✔Zone of active
decomposition
✔✔In which purification zone is the Plant and animal life impact:
- Algae reappears and fungi disappear
- Some of the harder fish such as carp will appear - ✔✔Zone of recovery
✔✔In which purification zone is the Plant and animal life impact:
- Normal plant and animal life
- Trout and other game fish appear - ✔✔Zone of cleaner water
✔✔ How much does the Deployment Treated Water Kit weigh? - ✔✔8 lbs
✔✔What are the capabilities of the Deployment Treated Water Kit? - ✔✔- Chlorine
- pH
- Organic Contaminants
- Inorganic Contaminants
- Pesticide/Herbicide Contaminants
✔✔What are the limitations of the Deployment Treated Water Kit? - ✔✔Not designed for
bacteriological analysis
✔✔When collecting water using the Deployment Treated Water Kit, how long would you
allow the water to run? - ✔✔3 to 5 minutes at a moderate flow
✔✔When collecting water using the Deployment Treated Water Kit and using the VOC,
Endothall, Glyphosate containers what must you be careful of? - ✔✔Must avoid the
presence of air bubbles
✔✔When collecting water using the Deployment Treated Water Kit, for the VOC what
do you add after container is filled halfway? - ✔✔3 drops of hydrochloric acid
✔✔When collecting water using the Deployment Untreated Water Kit, how much does
the kit weigh after filling the sample bottles? - ✔✔60 lbs
✔✔What can the Deployment Untreated Water Kit test for that the Deployment Treated
Water Kit can not? - ✔✔- Metals
- VOCs/ SVOCs
✔✔What does the supporting water unit compose of? - ✔✔- Army Quartermaster
- Marine Corps ESB (Engineer Support Battalion)
SOLUTIONS RATED A+
✔✔When disinfecting a water tank, how long should keep interior surfaces wet with
solution? - ✔✔60 minutes
✔✔What are the chlorine residual requirements for: Point of production? - ✔✔2.0 ppm
✔✔What are the chlorine residual requirements for: Point of distribution - ✔✔1.0 ppm
✔✔What are the chlorine residual requirements for: Point of consumption? - ✔✔0.2 ppm
✔✔When using Calcium hypochlorite to disinfect water, how long should contact time
for any container? - ✔✔30 minutes
✔✔In which purification zone is the general impact:
- High turbidity
- Sludge Deposits form on stream bed
- Dissolved oxygen reduced to less than one half original value - ✔✔Zone of degradtion
✔✔In which purification zone is the general impact:
- Low dissolved oxygen (DO) or none at all
- Scum may be floating on surface
- Odors from purification of organic matter including hydrogen sulfide and methane
gases are given off
- Water is darker and grayish in color - ✔✔Zone of Active decomposition
✔✔In which purification zone is the general impact:
- Turbidity decreases
- DO gradually increases
- No unpleasant odors given off - ✔✔Zone of recovery
✔✔In which purification zone is the general impact:
- Clean water
- DO approaches saturation
- Natural stream conditions are restored - ✔✔Zone of Cleaner water
✔✔In which purification zone is the Plant and animal life impact:
- Worms, snails, sewage fungi increase
- Fish life changes from game and food species to coarse
- Overall, algae and fish life decline - ✔✔Zone of degradtion
✔✔In which purification zone is the Plant and animal life impact:
- No fish present
, - Anaerobes present
- Sludge worms become numerous
- Threadlike organisms of grayish pink and cream tint appear - ✔✔Zone of active
decomposition
✔✔In which purification zone is the Plant and animal life impact:
- Algae reappears and fungi disappear
- Some of the harder fish such as carp will appear - ✔✔Zone of recovery
✔✔In which purification zone is the Plant and animal life impact:
- Normal plant and animal life
- Trout and other game fish appear - ✔✔Zone of cleaner water
✔✔ How much does the Deployment Treated Water Kit weigh? - ✔✔8 lbs
✔✔What are the capabilities of the Deployment Treated Water Kit? - ✔✔- Chlorine
- pH
- Organic Contaminants
- Inorganic Contaminants
- Pesticide/Herbicide Contaminants
✔✔What are the limitations of the Deployment Treated Water Kit? - ✔✔Not designed for
bacteriological analysis
✔✔When collecting water using the Deployment Treated Water Kit, how long would you
allow the water to run? - ✔✔3 to 5 minutes at a moderate flow
✔✔When collecting water using the Deployment Treated Water Kit and using the VOC,
Endothall, Glyphosate containers what must you be careful of? - ✔✔Must avoid the
presence of air bubbles
✔✔When collecting water using the Deployment Treated Water Kit, for the VOC what
do you add after container is filled halfway? - ✔✔3 drops of hydrochloric acid
✔✔When collecting water using the Deployment Untreated Water Kit, how much does
the kit weigh after filling the sample bottles? - ✔✔60 lbs
✔✔What can the Deployment Untreated Water Kit test for that the Deployment Treated
Water Kit can not? - ✔✔- Metals
- VOCs/ SVOCs
✔✔What does the supporting water unit compose of? - ✔✔- Army Quartermaster
- Marine Corps ESB (Engineer Support Battalion)
