operation, maintenance and monitoring plan ... - Ithaca-SHIP.org!

2.2.1.1 Extraction Well Vaults
• Open each well vault and visually observe the vault interior.
• Check all instrumentation and exercise valves by opening and closing them.
• Check that adequate pressure is being provided to the pneumatic pumps by recording the air
pressure gauge reading.
• Record the vacuum reading from the vacuum line header.
• Record the water pressure reading from the water pipe lateral to ensure there is no blockage in the
water pipe.
• Adjust the air relief valve, if necessary, to maintain the design vacuum at the wellhead.
• Record the pump stroke displacement data and air line cycle flow counter associated with the
pneumatic pump.
• Verify the heat tape is functioning and pipe insulation is intact.
• Remove any accumulated water from the vault and clear the weep drain if obstructed.
2.2.1.2 Treatment Building
• Inspect each equipment skid and associated piping for leaks and disconnections.
• Manually turn the system on to observe the transfer pumps and listen for unusual sounds.
• Observe the flow meters for proper operation by checking the instantaneous flow measurement. If
the flow meters appear to be inoperable, clean the flow meter in accordance with the manufacturer’s
recommendations.
• Check the stainless steel mounted 4-position float switch assembly in the equalization tank to
observe it is hanging properly and free from obstruction. Also observe the groundwater contained in
the equalization tank. Make notes of any unusual odors, floating debris, water clarity, the amount of
solids on the bottom of the tank, etc.
• Visually observe and clean, as necessary, the inlet wye strainer to the transfer pump for the
equalization tank and air stripper sump.
• Record the pressure readings associated with the bag filter units. Clean and/or replace bag filters as
necessary.
• Observe the operation of the air stripper including the blower, transfer pump, and associated
appurtenances. Inspect the trays of the air stripper for accumulated sludge. Clean trays as
necessary to maintain design performance of the air stripper.
• Record the pressure readings before and after each liquid and vapor phase activated carbon unit.
• Visually inspect the PLC to ensure it is functioning properly; check for any alarm conditions and
address as necessary.
• Inspect sump in treatment building to ensure it is free of liquid and debris; clean, if necessary. If liquid
is present, determine source.
• Ensure exhaust fan, heaters, or louvers are operational, depending on season.
• Check piping entrance into building for damage or leaks.
• Inspect outside of treatment building for damage to vapor exhaust stack, gutters, doors,
infrastructure, fencing, electric panel, etc.
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