CDS Waste Management & Recycling 3

Question 1

Which building material installed before 1979 requires testing for PCB contamination before demolition waste disposal?

Accepted Answer

Caulking compounds and joint sealants

Answer

Caulking and sealants manufactured before 1979 may contain PCBs (polychlorinated biphenyls) and must be tested and disposed of under TSCA regulations if concentrations exceed 50 ppm.

Question 2

When tracking C&D waste for LEED certification, which metric is most critical to document and report?

Accepted Answer

Percentage of total C&D waste by weight diverted from landfill

Answer

LEED Materials & Resources credits are awarded based on the percentage of total C&D waste diverted from landfill by weight or volume through recycling, salvage, or donation.

Question 3

How is steel scrap from demolition projects typically handled to maximize value recovery?

Accepted Answer

Selling to metal recyclers or scrap dealers at current commodity market prices

Answer

Demolition steel scrap holds significant commodity market value and is routinely sold to scrap dealers or metal recyclers, generating revenue that offsets overall demolition project costs.

Question 4

Under which federal regulation must a demolition contractor notify the state environmental agency at least 10 working days before demolishing a structure with friable asbestos-containing materials?

Accepted Answer

NESHAP 40 CFR Part 61 Subpart M for asbestos

Answer

NESHAP (40 CFR Part 61 Subpart M) requires a written notification to the state environmental agency at least 10 working days before demolition when regulated asbestos-containing material is present.

Question 5

Which of the following best describes 'deconstruction' as distinguished from standard mechanical demolition?

Accepted Answer

Carefully dismantling a structure to maximize recovery of reusable and recyclable materials

Answer

Deconstruction is the systematic, careful dismantling of a building by hand or with small tools to recover intact, reusable materials such as lumber, brick, fixtures, and hardware for resale or donation.

(CDS) Certified Demolition Supervisor Practice Test

(CDS) Certified Demolition Supervisor Practice Test

CDS Waste Management & Recycling 3