Emissions Measurement & Verification Flashcards

Which standard sets requirements for bodies that perform GHG validation and verification, such as for accreditation?

Answer: ISO 14065

ISO 14065 specifies principles and requirements for bodies validating and verifying environmental information.

A company sells a business unit that represented 12% of base-year emissions; under the GHG Protocol, what should it generally do?

Answer: Recalculate base-year emissions to reflect the structural change

Structural changes exceeding the company's significance threshold trigger base-year recalculation to keep comparisons consistent.

Using IPCC AR5 100-year GWPs (CH4 = 28), what is the CO2e of 50 metric tons of methane?

Answer: 1,400 t CO2e

50 t × 28 = 1,400 t CO2e.

Under a limited assurance engagement, compared with reasonable assurance, the verifier typically:

Answer: Performs fewer and less extensive procedures and issues a negative-form conclusion

Limited assurance involves reduced procedures and results in a negatively worded conclusion.

When a CEMS is out of control and data are missing, what does EPA regulation generally require?

Answer: Use prescribed substitute data procedures

EPA rules such as Part 75 and Part 98 specify substitute data procedures, which are often conservative, for missing monitoring data.

Which consolidation approach accounts for emissions according to the organization's percentage ownership of an operation?

Answer: Equity share

The equity share approach allocates emissions in proportion to economic interest in each operation.

A verifier compares this year's emissions intensity per unit of output with prior years to spot anomalies; what is this procedure called?

Answer: Analytical procedure

Analytical procedures evaluate trends and ratios to identify unexpected fluctuations that need further testing.