Laserfiche WebLink
SUPPLEMENTAL MATERIAL <br />2 <br /> <br />In addition, staff recently initiated a condition assessment program for the <br />City’s 4.9 miles of sewer force mains. Unlike gravity sewer mains, force mains <br />operate under pressure and cannot be inspected using conventional CCTV <br />methods. This is the first comprehensive force main inspection effort <br />undertaken by the City and will provide valuable information regarding the <br />condition of these critical assets, helping to further improve long-term <br />infrastructure planning and risk management. <br /> <br />2. The per capita number 51 gallons per person seems high? (Page 5 of 15 ) <br />A. For wastewater cost-of-service studies, indoor water use assumptions <br />typically range from about 45 to 55 gallons per capita per day (gpcd), <br />depending on local conditions, conservation practices, housing <br />characteristics, and climate. The gallons per capita per day of indoor <br />residential water consumption of 51gpcd used in the sewer rate study is <br />within this range and was derived from the City’s Annual Urban Water Use <br />Objective and Water Use Report. It is not considered high. <br /> <br />3. In Table 2, single-family vs single-family with second residence, what is the <br />methodology? <br />A. For properties with a second residence unit, the analysis assumes a larger <br />number of occupants and, therefore, greater indoor water use and <br />wastewater generation than a typical single-family residence. Residential <br />wastewater generation is estimated based on household size and indoor <br />residential water use (gpcd). According to the 2024 American Community <br />Survey data, the average Single-Family household in Pleasanton has <br />approximately 3.06 residents, while the average Multi-Family household has <br />approximately 2.12 residents. The Single-Family with Second Residence <br />category assumes one primary Single-Family dwelling and one smaller <br />secondary dwelling unit, resulting in a total estimated occupancy of 5.18 <br />residents (3.06 + 2.12). <br /> <br />4. In the presentation Table 2, please explain why homes are calculated differently <br />from the commercial? <br />A. Residential and commercial customers generate wastewater differently and <br />therefore require different methodologies. Residential wastewater generation <br />is estimated using household size and indoor water use assumptions <br />because residential water use can vary based on occupancy and housing <br />type. Commercial wastewater generation is based on actual winter water use <br />data, which provides a direct measure of typical wastewater discharge for <br />each business. This approach helps ensure that each customer class is <br />assigned costs based on the best available indicator of wastewater <br />generation.