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Metropolitan Wastewater Management Commission Capital Improvement Program <br />~, <br />Biofilter Fans = Tle biofilfer fans-move odorous air collected from the pretreatment process . <br />through the biofilter. The current fans have been in continuous service 24 hrs/day for more than <br />10 years. Replacement will provide improved reliability andIower maintenance costs for this <br />LRAPA air pollution discharge permit required operation. This project and associated funding <br />are included in the Influent Pumping/Headworks Expansion capital project. <br />Water Chiller -The water chiller provides for air conditioning of equipment rooms and work <br />space in the Operations Building. The existing water chiller has been in service for 24 years. <br />Replacement of this pressure vessel is for safety and operational reliability. <br />HVAC Control Panels and Air Conditioning Unit -The control panels and air conditioning unit <br />provide for regulated heating; ventilation, and air conditioning of the Maintenance Building and <br />the Sludge Holding Tank Transfer Room in the Digester Complex. The existing equipment has <br />been in service for 24 years and its replacement will improve reliability. <br />W2 Pump and Variable Frequency Drive (VFD) -The W2 pumps are critical equipment and <br />essential for operating a large number treatment processes and the reclaimed water irrigation <br />supply. The VFD provides for continuous adjustment of motor speed to meet changing flow <br />demand and pressure of the W2 system. The existing W2 pumps have been in service for 24 <br />years and the VFD has been in service for 10 :years. Their replacement is required to maintain <br />reliability with process operations and reclaimed water irrigation. The replacement will be <br />phased at a rate of one pump and VFD per year. <br />• Major Rehabilitation Program -Budget <br />The FY 07-08 Capital Programs budget includes $270,000 for Major Rehabilitation projects, <br />which are identified on the table below. <br />Major Rehab Pro'ects - FY 07-08 <br />Descri tion FY 07-08 Ado ted Bud et <br />O erations/Maint Building Improvements $50,000 <br />Grit Channel Metal Rails (2) Included in capital project <br />Roof Re lacement, Secondary Com lex $65,000 <br />Roof Re lacement, Prim Com lex $35,000 <br />Roof Re lacement, Boiler Bld . $35,000 <br />Roof Replacement, BMF O erations $45,000 <br />BMF As halt Crack and Fog Sealin $40,000 <br />Operations Building Improvements -This expenditure will go towards miscellaneous <br />improvements to renovate and improve the functionality of the Operations and/or: Maintenance <br />Building for staff. Business functions and staff size have changed substantially for office and <br />technical staff since original construction of the Operations and Maintenance buildings. <br />Rehabilitation and functionality. improvements are helping to delay the need for additional floor <br />space. <br />Grit Channel Metal Rails -The grit removal channels in the pretreatment process include metal <br />railing for collector flights to travel on for transfer and removal of the grit. The rails have <br />ii <br />Page 47 FY 07-08 BUDGET AND CIP <br />