4- Unit review exercises

Question 1

Remediation sampling is conducted to determine
a. the extent of contamination before any cleanup is conducted.
b. if any contamination exists after a cleanup process.
c. the need for personnel protective equipment.
d. which personnel have been exposed.

Answer 1

b. if any contamination exists after a cleanup process.

Question 2

What is an important factor to consider when developing a sampling methodology?
a. Topography.
b. Time of day.
c. Where to sample.
d. Weather conditions.

Answer 2

c. Where to sample

Question 3

What are the two types of augers?
a. Bucket and screw.
b. Trowel and shovel.
c. Split spoons and push tube.
d. Veihmeyer tube and trier sampler.

Answer 3

a. Bucket and screw

Question 4

Which sampling device has a major limitation of not being capable of penetrating stony or
rocky soil?
a. Trier sampler.
b. Push tube sampler.
c. Veihmeyer tube sampler.
d. Split spoon tube sampler.

Answer 4

c. Veihmeyer tube sampler

Question 5

If a soil sample is mixed or blended to create an even distribution of the contamination that
is in the soil, what type of sample has been collected?
a. Uniform.
b. Composite.
c. Homogenized.
d. Total.

Answer 5

c. Homogenized

Question 6

Which type of sampling strategy should be used when there is minimal site background
information available and there are no visible signs of contamination?
a. Hot spot.
b. Simple random.
c. Systematic grid.
d. Stratified random.

Answer 6

b. Simple random

Question 7

What type of sampling strategy would be used to investigate large sites that encompass a
number of soil types, topographical features, or land uses?
a. Hot spot.
b. Simple random.
c. Systematic grid.
d. Stratified random.

Answer 7

d. Stratified random

Question 8

What type of grid pattern increases the efficiency of hot spot soil sampling?
a. Square.
b. Diagonal.
c. Triangular.
d. Rectangular.

Answer 8

c. Triangular

Question 9

It is important to know how a contaminant interacts within the soil because it
a. lets you know how much of the sample to collect.
b. can help you determine the extent of contamination in and around the area.
c. lets you know how deep and how far out from the contamination area to sample.
d. can help you determine the type of direct-reading instrument to use to collect samples.

Answer 9

c. lets you know how deep and how far out from the contamination area to sample

Question 10

Which type of sample can be used to determine if a particle size is related to contaminant
distribution?
a. Homogeneous.
b. Distribution.
c. Composite.
d. Sieving.

Answer 10

d. Sieving

Question 11

What is the major concern when sampling for volatile organic compounds?
a. Collecting the correct amount of soil.
b. Properly preserving the sample at the collection site.
c. Minimizing air contact and loss of vapors with the soil sample.
d. Ensuring the sample is analyzed within 24 hours of collection.

Answer 11

c. Minimizing air contact and loss of vapors with the soil sample

Question 12

What field analysis device is best used to verify presence or absence?
a. Hazardous Air Pollutants on Site (HAPSITE®).
b. Hazardous material (HAZMAT) identification (ID).
c. Toxic Vapor Analyze (TVA)–1000.
d. X-ray fluorescence (XRF).

Answer 12

b. Hazardous material (HAZMAT) identification (ID)

Question 13

What field analysis device can be used to sample for metals?
a. Hazardous Air Pollutants on Site (HAPSITE®).
b. Hazardous material (HAZMAT) identification (ID).
c. Toxic Vapor Analyze (TVA)–1000.
d. X-ray fluorescence (XRF).

Answer 13

d. X-ray fluorescence (XRF)

Question 14

The advantage of collecting soil gas samples in the field is it will
a. indicate if there are any volatile organic compounds in the soil.
b. define the migration pattern of the contaminants in the soil.
c. indicate if the soil is soluble or insoluble.
d. indicate the porosity of the soil.

Answer 14

a. indicate if there are any volatile organic compounds in the soil

Question 15

After sampling results have been obtained, how are they interpreted?
a. They are documented in Defense Occupational and Environmental Health Readiness System
(DOEHRS) and sent to the major command (MAJCOM).
b. They are compared to the selected occupational exposure limit (OEL).
c. They are compared against previous results.
d. They are interpreted by the laboratory.

Answer 15

b. They are compared to the selected occupational exposure limit (OEL)

Question 16

Which of these is not a consideration when comparing analysis results to a standard?
a. Ensure the correct laboratory analysis method was conducted.
b. Ensure the results are compared to the correct type of standard.
c. Ensure all individuals potentially affected are listed in supportive documentation.
d. Ensure the correct units of measurement for both the sample and standard are being used.

Answer 16

c. Ensure all individuals potentially affected are listed in supportive documentation.