REGULARLY_PROVIDED_SERVICES.pdf

CITY OF TUCSON REQUEST FOR PROPOSAL NO. 222988 – REGULARLY PROVIDED SERVICES

BUSINESS SERVICES DEPARTMENT Page 1 of 5 SHARED SERVICES PROCUREMENT DIVISION RESPONSIBLE CONTRACT OFFICER: Emily Clark

255 W. ALAMEDA, 6TH FLOOR, TUCSON, AZ 85701 PH: (520) 837-4129

REGULARLY PROVIDED SERVICES

I. Los Reales Groundwater Remediation System (GWTS)

A. Time Estimate: Approximately 10 hours per week, minimum 3 visits per week by an experienced technician.

B. Routine Operation & Maintenance Tasks:

1. On Mondays, Wednesdays, and Fridays, verify that the remedial equipment (air stripping unit, the blower, transfer pumps, sequestering agent tank, and carbon vessels) are operating normally.

2. Check that all of the wells are running, log flows and pressures, add and mix the SeaQuest chemical, and perform as needed troubleshooting and maintenance based on the needs of the system.

3. Inspect all mechanical and electrical components of groundwater remediation system including conveyance pipelines and injection/extraction well heads. Verify all electrical terminal connections, switches and power supplies are in good condition and operating normally.

4. Verify all plumbing, meters and mechanical components associated with the distribution piping of treated water is operational. Verify the retention basin maintains the required free board.

5. Maintain the remedial compound and remedial equipment clean and all documentation organized.

6. Perform site checks to the Supervisory Control and Data Acquisition (SCADA) system to observe and adjust operations as needed.

7. Troubleshoot and provide repair oversight of mechanical and electronic system components either by City staff or outside contractors.

8. Diagnose and repair broken wires or connections that may cause a VFD fault.

9. Oversee well rehabilitation and pump maintenance and repair, installing replacement wells, including plumbing and electric, and monthly reporting.

10. Make recommendation for system repairs.

11. Document all findings, observations and recommendations from each visit in the log book spreadsheet on the site computer.

12. On a monthly basis sample system influent and effluent groundwater and deliver to the Tucson Water

Quality Laboratory (TWQL) for analysis.

13. Record flow meter totalizer readings for each flow meter (as read from flow meter face) on a semiannual basis (June and December).

II. Landfill Gas Extraction Systems

A. General Expectation: An experienced technician will visit each of the gas control (flare) systems (Harrison, Vincent Mullins, Speedway and Los Reales Landfill) and the Prudence Landfill blower system on a regular schedule to monitor and maintain the systems.

The Contractor is expected to have and supply a CES Landtec GEM 2000 or 5000 series instrument for the regular monitoring of the landfill gas systems. It is required for the GEM meter be sent to the manufacturer for calibration on an annual basis. The City will not reimburse rental costs for a GEM instrument.

B. Maintenance Log: All regular visits will be documented in a maintenance log book that will remain at each site.

1. Documentation will include system status, routine instrument readings, problems noted and corrective action taken, and general observations of the system and site.

2. Each log entry will be dated and initiated by the technician performing the site visit.

3. Copies of all log books will be submitted to ES on a quarterly basis.

C. Routine Operation & Maintenance Tasks by Location:

1. Harrison Landfill Gas Extraction System (LGES)

a. Time Estimate: Approximately 5 hours per week, two or three visits per week (as needed) by an experienced technician.

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b. Each Monday

• Verify the flare and blower systems are operating normally.

• Check for obvious problems with the flare, blower, air compressor, piping, etc. Repair minor items immediately, if possible. Report major items to EGSD and arrange repairs if requested.

• Record vacuum and flow readings.

• Check and record system temperatures (inlet/outlet, flare temp, etc.)

• Check condensate control system (pump working, air compressor cycling property, air pressure proper).

• Record condensate pump cycle counter readings and condensate tank levels in the system log book kept at the site.

• Check general site security (fencing, vandalism, etc.). Repair minor items immediately, if positive.

Report major items to EGSD and arrange to repair if requested.

c. Each Friday

• Verify the flare and blower systems are operating.

• Check for obvious problems with the flare, blower, air compressor, piping, etc. Repair minor items immediately, if possible. Report major items to EGSD and arrange repairs if requested.

• Check general site security (fencing, vandalism, etc.). Repair minor items immediately, if positive.

d. On a Monthly Basis

• Switch blower in operation (start one, shut down other).

• Check and adjust compressor and blower belts as needed.

• Check condensate holding tank level and sump as needed (remove through EGSD’s contracted pump and disposal company).

e. On a Quarterly Basis

• Change oil and filter on air compressor

• Lubricate blower

• Monitor and adjust as needed extraction well gas concentrations, flow, and temperatures. Results of each quarterly monitoring event will be forwarded to EGSD in both electronic and hard copies format.

• Landscape and clean site as needed.

f. Annually

• Remove, clean, inspect, and reinstall flame arrestors, if needed.

• Open and inspect condensate knockouts, clean de-mister pads, if needed.

• Remove and ship system flow meter to the manufacturer for calibration.

2. Vincent Mullins and Speedway Landfill Gas Extraction Systems (LGES)

a. Time Estimate: Approximately 6 hours per week, two to three visits per week (as needed) by an experienced technician.

• Verify the flares and blower systems are operating normally at both sites.

• Check for obvious problems with the flares, blowers, air compressors, piping, etc. Repair minor items immediately, if possible. Report major items to EGSD and arrange repairs if requested.

• Record vacuums and flow readings, and landfill gas extraction at blower inlets.

• Check and record system temperatures (inlet/outlet, flare temp, etc.).

• Check condensate control system (pumps working, air compressor cycling property, air pressure proper).

• Record condensate pump cycle counter readings sand condensate tank levels in the system log books kept at each site.

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• Check general site security (fencing, vandalism, etc.). Repair minor items immediately, if positive.

Report major items to ES and arrange to repair if requested.

• Check for obvious problems with the flares, blowers, air compressors, piping, etc. Repair minor items immediately, if possible. Report major items to EGSD and arrange repairs if requested.

• Check general site security (fencing, vandalism, etc.). Repair minor items immediately, if positive.

• Check and adjust compressors and blower belts as needed.

• Change oil and filters on air compressors.

• Lubricate blowers.

• Monitor and adjust as needed extraction well gas concentrations, flow, and temperatures. Results of each quarterly monitoring event will be forwarded to EGSD in both electronic and hard copies

• Landscape and clean sites as needed.

• Remove, clean, inspect, and reinstall flame arrestors, if needed

3. Prudence Landfill Gas Extraction System (LGES)

a. Time Estimate: Approximately 2 hours per week, minimum two visits per week by an experienced technician.

• Check for obvious problems with the blower, air compressor, piping, etc. Repair minor items immediately, if possible. Report major items to EGSD and arrange repairs if requested.

• Record vacuums and flow readings, and landfill gas extraction at blower inlets.

• Check condensate control system (pumps working, air compressor cycling property, air pressure proper).

• Record condensate pump cycle counter readings and condensate tank levels and the system log book that will be kept at each site.

• Check general site security (fencing, vandalism, etc.). Repair minor items immediately, if positive.

• Check for obvious problems with the blower, air compressor, piping, etc. Repair minor items immediately, if possible. Report major items to EGSD and arrange repairs if requested.

• Check general site security (fencing, vandalism, etc.). Repair minor items immediately, if positive.

• Check and adjust compressor and blower belts as needed.

• Change activated carbon as needed (carbon obtained through EGSD’s contracted services.

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• Change oil and filters on air compressors.

• Lubricate blower.

• Monitor and adjust as needed extraction well gas concentrations, flow, and temperatures. Results of each quarterly monitoring event will be forwarded to ES in both electronic and hard copies

• Landscape and clean sites as needed (pull/kill weeds, sweep out blower building, etc.)

4. Los Reales Landfill Gas Collection and Extraction System (GCCS)

a. Time Estimate: Approximately 15 hours per week, minimum 3 visits per week by an experienced technician.

b. Each Monday, Wednesday and Friday

• Check for obvious problems with the blower, flare, piping, condensate sump, etc. Repair minor items immediately, if possible. Report major items to EGSD and arrange repairs if requested.

• Record system vacuum, flow and landfill gas readings.

• Check condensate holding tank level and sump as needed (remove through EGSD’s contracted pump and disposal company).

• Check condensate traps (as needed).

• Check general site security (fencing, vandalism, etc.). Repair minor items immediately, if positive.

c. On a Monthly Basis

• Check and adjust blower belts as needed.

• Monitor all landfill gas extraction wells for gas concentration, temperature, flow and vaccum for air permit compliance, and adjust well vacuum as needed. Results of each monthly monitoring event will be forwarded to EGSD in electronic format.

• Check LFG laterals and main conveyance piping for leaks or damage and repair as needed.

• Check LFG extraction well levels and coordinate with EGSD for vertical extensions.

d. On a Quarterly Basis

• Lubricate blower.

• Perform the quarterly landfill Surface Emissions Monitoring (SEM). Results of the quarterly SEM event will be forwarded to EGSD in electronic format. It should be noted the SEM is not included in the time estimate above but should be anticipated to take approximately 40 hours per quarter.

The Contractor will rent the appropriate meter to conduct this monitoring. Rental costs will be reimbursed by the City.

• Landscape and clean sites as needed (pull/kill weeds, sweep out office building, etc.)

• Check flare propane tank levels and change as needed.

e. Annually

• Remove, clean, inspect, and reinstall flame arrestors, if needed.

• Remove and ship system flow meters (2) to the manufacturer for calibration.

5. Silverbell Landfill Groundwater Extraction and Treatment System (GETS)

a. Time Estimate: Approximately 14 hours per week, 3 visits per week by an experienced technician.

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b. Each Visit

• Record system parameters (including pump flow set points and measured rates, system pressure at various locations, totalizer readings, well water levels, power meter reading, pH, turbidity, and alarm condition/diagnosis/remedy as needed).

• Adjust process set points on PLC and/or manual valves as needed.

• Visual inspection of well head facilities and treatment facility to assess site security, check for leaks or other visible or audible flaws.

• Examine facilities for signs of animal or insect infestation (e.g., bees, gophers).

• Remove weeds and debris from facilities.

• Perform minor services and repairs as-needed (e.g., lubricating gate hinges or repairing signage).

• Effluent Pumps:

o Inspect seals on effluent pump and check level and condition of oil through site glass on bearing frame.

o Check for unusual noise, vibration, and bearing temperatures.

o Check the pump and piping for leaks.

o Analyze the vibration.

o Inspect the discharge pressure.

o Inspect the temperature.

o Check the seal chamber and stuffing box for leaks.

o Ensure that there are no leaks from the mechanical seal.

o Request vendor maintenance to adjust or replace the packing in the stuffing box if excessive leaking is observed.

• As needed:

o Carbon slurry service: Be on-site for slurry service, backflush fines out of carbon, restart system.

o Bag filters: Replace when differential pressure across bag filter exceeds 20 psi.

c. On a Monthly Basis

• Collect sample containers from Tucson Water laboratory and set up next order.

• Collect samples from each wellhead and sample ports on GAC vessels and deliver samples with

Chain-of-Custody to TWQL for analysis.

d. On a Quarterly Basis

• Effluent Pumps:

o Check that the foundation bolts are tight.

o Check the packing if the pump has been left idle, and replace as required.

o Change the oil every three months or 2,000 operating hours at minimum.

o Check the shaft alignment, and realign as required.

o Check the pump and motor hold down bolts for proper tightness.

e. Annually

• Routine service of the air release valves on the conveyance pipeline.

• Inspection of plug valves.

• Inspection of the break tank.

• Testing enclosure ground connections for electrical enclosures (e.g., motor controllers and radio telemetry units [RTUs]).

• Removing dust from the exterior and interior of electrical enclosures.

• Re-torqueing wire connections electrical enclosures.

• Checking the capacity, pressure, and power for each pump.

• Effluent Pumps: Lubrication interval every two years or 20,000 hours, whichever is first.