Improper Modifications

55.jpg (38749 bytes) This image shows a local source capture hood which has been disabled by disconnecting the  exhaust duct.
88.jpg (30789 bytes) The image on the left shows a section of disconnected duct (see arrows). The duct served a local exhaust hood for a transfer point between conveyor belts. This makes this material transfer operation an uncontrolled point source of silica containing dust.
104.jpg (19640 bytes) This images show an abandoned exhaust duct. Abandoned ducts may not even be capped. Abandoned ducts may indicate uncontrolled emission sources, exhaust air undercapacity and exhaust system leakage problems.

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