It is important that perc be managed
and disposed of using the best management
practices available. This will help
you protect your employees, customers
and the environment from any unwanted
impacts of perc. As most in the dry
cleaning industry know, cleaning up
perc can be very expensive - especially
if it gets into the groundwater or our
drinking water supply. Perc is suspected
of causing cancer and may cause liver
damage in humans. There are many opportunities
to maximize the use of perc in your
dry cleaning operations and to reduce
its escape into the environment, including:
• Improved operating and maintenance
procedures;
• Spot cleaning and wet cleaning;
• More efficient equipment, and
• Substituting cleaning products and
methods.
The following offers some tips for
managing perc safely. Make sure to check
with the Oregon Department of Environmental
Quality for information on regulations
that apply to dry cleaners (contact
information is at the end of this summary):
1 Equipment Operation and Maintenance
• Consult Manufacturer’s Operating
Manual…
Equipment runs most efficiently when
it is operated and maintained according
to
manufacturer specifications.
• Regularly Clean…
Condensing coils, strainers, lint and
button traps. On auxiliary equipment,
regularly clean/change filters, clean
perc/water separator tank, and steam
condensation coils if necessary.
• Maintain Proper Outlet Temperature…
Check the outlet temperature weekly.
Make sure it doesn’t go above 45 degrees
Farenheit
at the end of the cool-down cycle. This
helps recover perc as a liquid for continued
use, and to
minimize perc evaporation.
2 Spill and Leak Prevention
• Check Weekly for Leaks…
Around door seatings and gaskets, hose
connections, pipe fittings, exhaust
dampers,
ductwork, lint trap lids, vents and
water separators. Repair any leaks within
24 hours.
• Handle Cleaning Materials Carefully…
to prevent spills.
• Track Solvent Mileage…
Know how much solvent your machine normally
uses. A drop in solvent mileage may
indicate
a leak. Solvent mileage is calculated
as pounds of clothes cleaned per gallon
of solvent.
• Provide Secondary Containment…
In areas where solvent and perc-containing
wastes are stored.
• Cover Containers…
To prevent evaporation and spilling.
3 Management and Disposal of
Perc Waste
• Contain and Label Perc Waste…
As “Hazardous Waste”, marking the date
the waste first was added to the container.
Contain in tightly covered, leak-proof
containers that are placed into secondary
containment.
• Perc-Contaminated Wastewater…
May be treated in an approved on-site
unit or drummed for disposal at a permitted
hazardous waste facility.
• Dispose of Hazardous Wastes at Permitted
Hazardous Waste Facility.
4 Housekeeping
• Keep Machine Doors Closed…
Except when adding or removing clothes.
• Drain Spent Filter Cartridges…
In their housing or in a sealed container
rather than setting them on the ground.
5 Recordkeeping
• Use the Dry Cleaner Compliance Calendar…
To log your perc purchases, hazardous
waste storage and shipment, leak detection
inspection and temperature monitoring
activities in one place.
Want More Information?
For more ideas on how to manage perc
or other solvents, pollution prevention,
or information about regulations, feel
free to contact the Oregon Department
of Environmental Quality’s Business
Assistance Program: 1-800-452-4011,
or 503-229-6147. Assistance is free
and is confidential!