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Industrial,
Commercial Activities & Stormwater Pollution
Roof Runoff Pollution
Did You Know...
Ventilation from etching equipment and acid plating baths can be
a source of roof contamination?
Sometimes roof runoff has higher copper and nickel concentrations
than runoff from chemical and waste handling areas. Roofs with no
visible contamination may be a significant pollutant source. Scrubbers
may be less effective than you think.
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Note the green and blue chemical depositions at pipefittings
and vents in this picture of a roof vent (left) and pump (right).
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Follow these Best Management Practices:
- Install vent covers and drip pans where there are none.
- Prevent leaks in pipe fittings and containment vessels with
routine maintenance.
- Dispose of condensate from ventilation properly, or treat it.
- Promote condensation within piping containment, such as using
chiller coils.
- Check that your scrubber solution is appropriate for the chemistry
of the fumes.
- Look for chemical deposition around vents, pipes and other surfaces
For more information, see the factsheet Is Your Roof Runoff Polluted? (PDF, 109 KB) |
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Report Storm Drain Dumping
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Call
(408) 945-3000
Or use the online form to
report illegal dumping to the storm drain.
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