Chapter 14 - Water Quality Testing

Question 1

A sample containing all the constituents that are in the water from which it was taken.

Answer 1

Representative Sample

Question 2

A single water sample collected at one time from a single point.

Answer 2

Grab Sample

Question 3

A series of individual or grab samples taken at different times from the same sampling point and mixed together.

Answer 3

Composite Sample

Question 4

A plan for a laboratory operation that specifies the measures used to produce data of known precision and bias.

Answer 4

Quality Assurance (QA)

Question 5

A laboratory program for continually checking techniques and calibrating instruments to enable consistency in analytical results.

Answer 5

Quality Control (QC)

Question 6

A written record of the sampler’s history of SWDA compliance, from the time of collection to the time of analysis and subsequent disposal.

Answer 6

Chain of Custody

Question 7

The oxygen dissolved in water, wastewater, or other liquid; usually expressed in milligrams per liter, parts per million, or percent saturation.

Answer 7

Dissolved Oxygen