CBP Environmental Standards 5

Question 1

What are the four certification levels of the ICC 700 National Green Building Standard, from lowest to highest?

Accepted Answer

Bronze, Silver, Gold, Emerald

Answer

The NGBS (ICC 700) certifies homes at Bronze, Silver, Gold, or Emerald.

Question 2

How should a builder read HERS Index scores?

Accepted Answer

Lower scores mean better efficiency, and 100 is the reference home

Answer

On the HERS Index, 100 is the standard reference home and each point lower is about 1% more efficient, with 0 meaning net-zero energy.

Question 3

A WaterSense-labeled toilet may use no more than how many gallons per flush?

Accepted Answer

1.28 gpf

Answer

WaterSense toilets are limited to 1.28 gallons per flush, 20% below the 1.6 gpf federal standard.

Question 4

Which federal rule limits formaldehyde emissions from composite wood products such as MDF and particleboard used in homes?

Accepted Answer

TSCA Title VI

Answer

TSCA Title VI sets formaldehyde emission limits and labeling rules for hardwood plywood, MDF, and particleboard.

Question 5

Which EPA label recognizes new homes built with extra indoor air quality measures on top of ENERGY STAR requirements?

Accepted Answer

Indoor airPLUS

Answer

EPA's Indoor airPLUS label requires moisture, radon, pest, HVAC, and low-emission material controls beyond ENERGY STAR.

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