CPWM Recycling and Resource Recovery 2

Question 1

Which material contamination issue most commonly degrades the quality of recovered glass cullet in MRF operations?

Accepted Answer

Ceramic and porcelain fragments

Answer

Paper labels on bottles

Answer

Metal bottle caps

Answer

Plastic film residue

Question 2

The 'recovered materials' definition under EPA guidelines distinguishes recyclables from solid waste primarily based on:

Accepted Answer

Whether the material is legitimately recycled versus speculatively accumulated

Answer

Weight of the material

Answer

The collection method used

Answer

The end market price at time of recovery

Question 3

In single-stream recycling programs, which statement about contamination rates is most accurate compared to dual-stream programs?

Accepted Answer

Single-stream typically yields higher contamination rates but greater participation

Answer

Single-stream has lower contamination due to automation

Answer

Single-stream and dual-stream have equivalent contamination rates

Answer

Single-stream eliminates glass contamination entirely

Question 4

What does the term 'closed-loop recycling' mean in resource recovery practice?

Accepted Answer

A material being recycled back into the same or equivalent product

Answer

Recycling within a secured facility with no public access

Answer

A recycling program with a fixed collection route

Answer

Composting within a closed vessel

Question 5

Which federal act primarily governs the regulation of hazardous secondary materials that are recycled?

Accepted Answer

Resource Conservation and Recovery Act (RCRA)

Answer

Clean Air Act (CAA)

Answer

Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)

Answer

Safe Drinking Water Act (SDWA)

Question 6

A material recovery facility (MRF) manager notices that recovered fiber bales are being rejected by the paper mill. The most likely cause is:

Accepted Answer

Outthrow and prohibited materials exceed contract specifications

Answer

Bale density is too high

Answer

The bales are wrapped in the wrong twine type

Answer

Transportation distance is too long

Question 7

Which optical sorting technology uses near-infrared (NIR) spectroscopy in MRF operations?

Accepted Answer

Polymer sorting systems

Answer

Eddy current separators

Answer

Ballistic separators

Answer

Magnetic drum separators