Gray Water And Reclaimed Water; Air Contamination - EVAPCO ESW Series Operation And Maintenance Instruction

During operation, off-line cleaning of evaporative cooling equipment should be undertaken on a regular basis. Inspections should be
undertaken on a regular basis and should include both monitoring of microbial populations via culturing techniques and visual inspections
for evidence of biofouling. Additionally, drift eliminators should be inspected and maintained in good operation condition. Service
personnel must wear proper protective equipment (including approved respiratory protection equipment) while undertaking such
cleaning efforts or any other maintenance efforts on evaporative cooling equipment. Requirements for such protection equipment
include, but are not limited to, OSHA standards set forth in 29 CFR 1910.132 et seq..

Gray Water and Reclaimed Water

The use of water reclaimed from another process as a source of makeup water for evaporative cooling equipment can be considered as long
as the resultant recirculating water chemistry conforms to the parameters noted in Table 4. It should be noted that using water reclaimed
from other processes may increase the potential of corrosion, microbiological fouling, or scale formation. Gray water or reclaimed water
should be avoided unless all of the associated risks are understood and documented as part of the site specific treatment plan.

Air Contamination

Evaporative cooling equipment draws in air as part of normal operation and can scrub particulates out of the air. Do not locate the unit
next to smokestacks, discharge ducts, vents, flue gas exhausts, etc. because the unit will draw in these fumes which may lead to
accelerated corrosion or deposition potential within the unit. Additionally, it is important to locate the unit away from the building's fresh
air intakes to prevent any drift, biological activity, or other unit discharge from entering the building's air system.
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