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Proposed Local Sewer Rate Increase Background The City does not own or operate a wastewater treatment plant. A majority of the City's wastewater is treated by Dublin San Ramon Services District (DSRSD). The current average dry weather flow (ADWF) from the City to DSRSD is approximately 6 million gallons per day (mgd). A small portion of the City's wastewater flows, which originate from Ruby Hills, are conveyed to the City of Livermore water reclamation plant. The flow from Ruby Hills to the City of Livermore's plant is approximately 0.25 mgd ADWF. Once the City's sewer is secondarily treated either at the facilities at DSRSD or the City of Livermore, the treated sewer is stored and transported through the facilities owned and operated by the Livermore Amador Valley Wastewater Management Agency (LAVWMA) to the East Bay Discharge Authority (EBDA) outfall line into the outer Bay. A City of Pleasanton sewer bill is comprised of the wastewater treatment component either provided by DSRSD or the City of Livermore, the transport component provided by LAVWMA and finally the collection component provided by the City of Pleasanton. The portions of the sewer bill associated with the cost of the treatment and transport components were increased in July 2008 by both DSRSD and the City of Livermore. The portion of the sewer bill associated with the collection system has not been increased since September 2001. City's Sewer Collection System The City maintains and operates a sewer collection system. The City's above ground wastewater system includes 13 sewer pump stations. The below ground sewer assets consist of both gravity and force mains ranging in pipe diameter from 2 to 42 inches and the below ground sewer assets include approximately 270 miles of pipe of which a majority was installed between 1980 and 1990. A majority of the sewer mains are vitrified clay pipe and are smaller than 12 inches in diameter. Local sewer service charges are developed to equitably allocate costs to users for asset operation, pay for debt service incurred for the construction of sewer facilities, and to perform the necessary maintenance and repairs (or replacement) of the wastewater collection system. The costs also include the labor and pumping charges associated with the collection and pumping of raw sewer to the DSRSD and /or City of Livermore treatment plants. The local portion of the current City rates represents approximately 36% of the overall bi- monthly sewer bill. Audit/Review of Expenditures and Cost of Service Increases Just as experienced in the Water Fund, the City's costs have increased in the Sewer Fund. Staff started the review by auditing the City's Utility Billing records and found some billing inconsistencies that have been corrected. In addition, staff was able to reduce costs prior to developing the expenditures for the rate study and as a result of this the City is able to avoid a rate increase at this time in its sewer rates. Page 14 of 20