BLOCK 9: ENVIRONMENTAL HEALTH - Unit 11: Fluoride Analysis & Unit 12: Sample Preservation (complete)

Question 1

The process of adding fluoride when the natural fluoride level in the drinking water source is insufficient to prevent caries.

Answer 1

FLUORIDATION

Question 2

BE monitors the fluoride level on a schedule recommended by the _______________ at designated locations in the distribution system (usually the Child Development Center, Youth Center, and, at times, base housing).

Answer 2

CHIEF OF DENTAL SERVICES

Question 3

The EPA has established an MCL and MCLG of _____ mg/L to prevent adverse health effects and a non-enforceable secondary standard or SMCL of _____ mg/L to control the risk of dental fluorosis (teeth staining).

Answer 3

4.0 mg/L to prevent adverse health effects
2.0 mg/L to control fluorosis risk

Question 4

Tooth discoloration and/or pitting that can be caused by excess fluoride exposures during the formative period prior to eruption of the teeth.

Answer 4

DENTAL FLUOROSIS

Question 5

According to the EPA, a community water system that exceeds the fluoride MCL of _____ mg/L must notify persons served by that system as soon as practical, but no later than 30 days after the system learns of the violation.

Answer 5

4 mg/L

Question 6

The purpose of preserving a sample is to maintain the sample in the condition ____________________ between the time the sample is collected and the time the sample is analyzed.

Answer 6

NEEDED FOR ANALYSIS

Question 7

Generally, __________ temperatures will better preserve agents in samples.

Answer 7

LOWER TEMPS

Question 8

When preparing samples for shipment, holding times, preservation methods, and packaging
instructions should be attained from the _______________ or _______________.

Answer 8

ANALYZING LAB or ESAM PLAN

Question 9

What are some characteristics of the sample that can change before analysis?

Answer 9

• DISSOLVED IONS
• TEMP/PH
• MICROORGANISMS
• ZERO HEADSPACE - VOC SAMPLES

Question 10

In general, the _______________ the time that elapses between collection of the sample and its analysis, the more reliable the analytical results will be.

Answer 10

SHORTER

Question 11

Provides packaging and labeling requirements for infectious and chemical substances, including CBRN agents. These regulations are derived from a committee of experts on the transport of dangerous goods, including the International Civil Aviation Organization (ICAO).

Answer 11

INTERNATIONAL AIR TRANSPORT ASSOCIATION (IATA)

Question 12

This regulation covers the hazardous material table, special provisions, emergency response information, and training requirements.

Answer 12

49 CFR PART 172, HAZARDOUS MATERIALS REGULATIONS

Question 13

This manual provides guidance and procedures for preparing hazardous materials for shipment by military aircraft to ensure materials are packed, labeled, and marked correctly for transport.

Answer 13

AFMAN 24-204(I), PREPARING HAZARDOUS MATERIALS FOR MILITARY AIR SHIPMENTS

“Come on guys, it’s really exciting - it’s an AFMAN!”
- Sgt Hicks

Question 14

Documents sample custody transfer from the sampler, often through several persons, to the analyst in the laboratory.

Answer 14

CHAIN OF CUSTODY REPORT