TABLE OF CONTENTS (Continued)
Section
Page
CHAPTER SEVEN: SAMPLING AND ANALYSIS . . . . . . . . . . . . . . . . . . . . .
7 1
7.1
Elements of the Quality Assurance Project Plan . . . . . . . . . . . . . . .
7 1
7.2
Pre Sampling Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 2
7.2.1
Determining Sampling Frequency . . . . . . . . . . . . . . . . . .
7 3
7.2.2
Measurement of Static Water Level Elevation . . . . . . . . .
7 4
7.2.3
Detection and Sampling of Immiscible Layers . . . . . . . . .
7 6
7.2.4
Well Purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 7
7.3
Ground Water Sampling Equipment Selection and Use . . . . . . . . . .
7 10
7.3.1
Grab Samplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 12
7.3.1.1
Double and Single Check Valve Bailers . . . . .
7 12
7.3.1.2
Syringe Bailer . . . . . . . . . . . . . . . . . . . . . . .
7 13
7.3.2
Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 13
7.3.2.1
Bladder Pumps . . . . . . . . . . . . . . . . . . . . . . .
7 14
7.3.2.2
Helical Rotor Electric Submersible Pumps . . . .
7 14
7.3.2.3
Gas Drive Piston Pumps . . . . . . . . . . . . . . . .
7 14
7.3.2.4
Gear Drive Electric Submersible Pumps . . . . .
7 15
7.3.2.5
Centrifugal Pumps . . . . . . . . . . . . . . . . . . . .
7 15
7.3.2.6
Peristaltic Pumps . . . . . . . . . . . . . . . . . . . . .
7 16
7.3.2.7
Gas Lift Pumps . . . . . . . . . . . . . . . . . . . . . .
7 16
7.3.2.8
Gas Drive Pumps . . . . . . . . . . . . . . . . . . . . .
7 16
7.3.3
Packer Assemblages . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 17
7.3.4
Decontaminating Sampling Equipment . . . . . . . . . . . . . . .
7 17
7.3.5
Collecting Ground Water Samples . . . . . . . . . . . . . . . . .
7 18
7.4
In Situ or Field Analyses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 22
7.5
Sample Containers and Preservation . . . . . . . . . . . . . . . . . . . . . . .
7 23
7.5.1
Sample Containers . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 23
7.5.2
Sample Preservation . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 24
November 1992
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