Inspection and Sampling Procedures Flashcards
7 cards from real Environmental Compliance Inspector practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Inspection and Sampling Procedures flashcards as text
When inspecting a facility's stormwater pollution prevention plan (SWPPP), what must the plan specifically address?
Answer: Best management practices (BMPs) to prevent pollutants from entering stormwater runoff
A SWPPP must identify potential pollutant sources on-site and describe BMPs to prevent or reduce those pollutants from reaching stormwater discharges.
An inspector is evaluating a facility's asbestos-containing material (ACM) prior to a renovation. Under NESHAP, the facility must notify the appropriate agency at least how many days before the demolition or renovation begins?
Answer: 10 working days
The National Emission Standards for Hazardous Air Pollutants (NESHAP) for asbestos require facilities to notify the appropriate state or local agency at least 10 working days before renovation or demolition activities that disturb ACM.
A facility reports a spill of 55 gallons of used oil onto a paved surface that was immediately contained. Must this spill be reported to the National Response Center (NRC)?
Answer: Only if the spill reaches or threatens to reach navigable waters or adjoining shorelines
CERCLA Section 103 and the Clean Water Act require reporting spills of hazardous substances or oil to the NRC only if the release reaches or threatens navigable waters or adjoining shorelines.
During a groundwater monitoring inspection at a RCRA corrective action site, an inspector checks the depth-to-water measurements. Why is this data critical?
Answer: It establishes hydraulic gradients that show groundwater flow direction and the potential spread of contamination
Depth-to-water measurements across multiple wells are used to calculate hydraulic gradients and determine groundwater flow direction, which is essential for understanding contaminant migration pathways.
What does the term 'detection limit' mean in the context of environmental laboratory analysis?
Answer: The lowest concentration of an analyte that an instrument can reliably distinguish from background noise
The detection limit (often the method detection limit, or MDL) is the minimum concentration that can be measured and reported with statistical confidence that it is above zero.
A compliance inspector uses a photoionization detector (PID) during a site investigation. Which type of contaminants is a PID best suited to detect?
Answer: Volatile organic compounds (VOCs) such as benzene and toluene
PIDs use ultraviolet light to ionize gas-phase molecules, making them highly effective for real-time screening of VOCs in air, soil gas, or headspace.
When an inspector collects a water sample for total coliform analysis, which preservation method is required?
Answer: Collect in a sterile bottle containing sodium thiosulfate to neutralize residual chlorine and refrigerate
Sodium thiosulfate neutralizes residual chlorine that would otherwise kill bacteria and yield false-negative results; refrigeration at 4°C slows microbial growth during transport.