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Portland Demolition Companies & PCBs | Elder Demolition- building demolition concrete crushing recycling ,The EPA’s reinterpretation regarding PCBs concerns the definitions of bulk waste & remediation waste. What should Portland demolition companies know?BAVCrushers - Demolition, Crushing and Screening ...BAV Crushers design and manufacture a range of concrete, brick and rubble crushing and screening attachments for excavators in recycling and demolition applications.