Environmental Compliance Inspector Inspection and Sampling Procedures 2

Question 1

When collecting a composite wastewater sample over a 24-hour period, what is the primary advantage over grab sampling?

Accepted Answer

It captures variability in discharge concentrations throughout the day

Answer

It requires less laboratory analysis time

Answer

It is less expensive to collect

Answer

It eliminates the need for chain-of-custody documentation

Question 2

An inspector notices that a facility's storm drain outfall flows to a nearby wetland. Under the Clean Water Act, this discharge most likely requires what type of permit?

Accepted Answer

A National Pollutant Discharge Elimination System (NPDES) permit

Answer

A Resource Conservation and Recovery Act (RCRA) permit

Answer

A Safe Drinking Water Act Underground Injection Control permit

Answer

A TSCA section 5 pre-manufacture notice

Question 3

During a hazardous waste inspection, you find drums labeled 'Used Solvent Mixture' with no generator ID. What is the FIRST action you should take?

Accepted Answer

Document the condition with photographs and note it in your inspection report

Answer

Immediately arrange for emergency removal of the drums

Answer

Contact the state fire marshal

Answer

Order the facility to stop all operations

Question 4

A soil sample collected for VOC analysis must be preserved using which method to prevent analyte loss?

Accepted Answer

Refrigeration at 4°C with no headspace in a sealed vial

Answer

Air drying the soil before placing it in a plastic bag

Answer

Adding sodium thiosulfate and storing at room temperature

Answer

Freezing the sample at -20°C in an open container

Question 5

Which document accompanies a hazardous waste shipment from generator to disposal facility and must be retained for at least three years?

Accepted Answer

Uniform Hazardous Waste Manifest

Answer

Inspection Activity Report

Answer

Toxic Release Inventory Form R

Answer

Spill Prevention Control and Countermeasure Plan

Question 6

An inspector finds a facility discharging process water with a pH of 3.5 to the municipal sewer. This likely violates which type of regulation?

Accepted Answer

Industrial pretreatment program limits

Answer

Air quality pretreatment standards

Answer

Stormwater general permit conditions

Answer

Underground storage tank release detection requirements

Question 7

What is the purpose of a field blank in environmental sampling?

Accepted Answer

To detect contamination introduced by sampling equipment or the environment during collection

Answer

To calibrate the field instruments before sampling begins

Answer

To establish the background concentration in the source water

Answer

To verify the laboratory's analytical detection limits