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_ — -`�.� 1�1 Current and Future Ponulation Estimates Per CWC Section 10631(a), the 2015 UWMP must describe the current and projected population within the service area. Refining methods for estimating population has been a key focus of the 2015 UWMP Guidebook. EKI will work closely with the City to ensure that the historical population data will be based on information and sources that satisfy CWC requirements and are approved by the City. For example, per the Guidebook, and the RFP,we expect that future population growth over the UWMP planning horizon will be based on information provided by the Association of Bay Area Governments("ABAG"). Water Demand and Conservation Proiections Per CWC Section 10631(e)(1) and (2), water suppliers are required to quantify, to the extent records are available past, current, and projected water use by sector in five-year increments for the next 20 years. As per the RFP, this will presumably be done using the DSS Model. However, based on EKI's experience,we recommend that the City at least revisit key DSS Model assumptions as part of the UWMP process to ensure that the future water demands projected by the model accurately reflect the City's planned future growth. Given our experience us(ng the DSS model,EKI can provide such additional services upon request by the City. Evaluation of Hisioric, Current and Proiected Future Water Conservation and DMMs Per CWC Section 10631(f), retail water suppliers are required to provide descriptions regarding the nature and extent of implemented and planned demand management measures(i.e.,water conservation measures or Demand Management Measures ["DMMs"]). EKI will work with City staff to incorporate appropriate water conservation information into the 2015 UWMP based on the revised DMM framework required per Assembly Bill 2067 and per the City's California Urban Water Conservation Council("CUWCC")reporting,specifically with respect to: • Water waste prevention ordinances; • Mete�ing; • Conservation pricing; • Public education and outreach; • Programs to assess and manage distribution system real loss; • Water conservation program coordination and staffing support; and • Other DMMs that have a significant impact on water use as measured in GPCD, including innovative measures, if implemented. Stand-Alone Svstem Water Loss Report Distribution system water losses (also known as real losses) are the physical water losses from the water system and the utility's storage tanks, up to the point of customer consumption. Per CWC Section 10631 (e)(3), in the 2015 UWMPs, water suppliers must report their distribution system water loss for the most recent 12-month period available. It appears that DWR will require that the City use the worksheet-based American Water Works Association ("AWWA") Page � 18 Redwood dty Publlc Works Services Department 2015 UWMP (EKI 85-078) ATTY/AGR.2015.248/EKI -Development of 2015 Urban Water Management Plan