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CWEA - LAB ANALYST III NEWEST ACTUAL /
QUESTIONS WITH 100% SOLVED SOLUTIONS!! VERIFIED
When two of three successive determinations fall outside the
warning limits: - -----Answers--Another determination
should be made, and if it is within the warning limits no action is needed.
Which of the below statements is NOT correct when collecting samples for the detection of mercury by EPA 245.1 or SM 3112B? - -----Answers--a. Collect in polyethylene bottle and preserve with nitric acid and measure within 2 weeks.
- Collect in glass bottle and preserve with nitric acid and
- Collect in fluoropolymer bottle and preserve with nitric acid
- All of the above are true.
measure within 28 days.
and measure within 28 days.
Which of the below statements is correct when collecting samples for the detection of mercury by EPA 1631? - ----- Answers--Collect in fluoropolymer bottle and preserve with HCl within 48 hours.
Alkalinity - Bottle, Preservation, Hold Time - -----Answers-- 250mL plastic/glass, unpres, 14 days
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1,4 Dioxane - Bottle, Preservation, Hold Time - -----Answers- -500ml amber, sulfite/bisulfate, 28 days
Ammonia - Bottle, Preservation, Hold Time - -----Answers-- 500ml plastic/glass, pH<2 H2SO4, 28 days
BNAS - Bottle, Preservation, Hold Time - -----Answers--1L amber glass, sod thiosulfate, 7 days
BOD / cBOD - Bottle, Preservation, Hold Time - -----Answers- -1L plastic/glass, unpreserved, 48 hr
Metals - Bottle, Preservation, Hold Time - -----Answers-- 500ml plastic, HNO3 pH<2, 6 mo
300.1 (Bromate, Chlorate, Chlorite) - Bottle, Preservation, Hold Time - -----Answers--500ml plastic/glass, EDA, 28 days
300.0 + 300.1 (All Others)- Bottle, Preservation, Hold Time - -- ---Answers--plastic/glass, unpres, 28 days
Chlorine Demand - Bottle, Preservation, Hold Time - ----- Answers--amber, unpres, 24 hr
Chlorine, Total Residual - Bottle, Preservation, Hold Time - --- --Answers--plastic/glass, unpres, 0.25hr
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