Laserfiche WebLink
<br />City of Pleasanton 2 Woodard & Curran, Inc. <br />Advanced Planning Projects – Sewer Infrastructure Impact December 11, 2025 <br />1. Housing Element Addendum Update: <br />o Densification of existing future development sites and addition of new future <br />development sites <br />2. Bart Station Development <br />o Densification of the BART Housing Element site. <br />▪ Two model load scenarios will be developed to determine the impacts <br />of the upper and lower density scenarios. <br />Subtask 2.2 <br />This subtask includes the East Pleasanton Master Plan advanced planning project. This project <br />is assumed to be developed after Projects 1 and 2 are completed, therefore any proposed loads <br />from the East Pleasanton Projects would be added to the impact of those projects. Model loads <br />will include projects such as Arroyo Lago, Amazon, and East Lakes with final unit counts added <br />based on feedback from City planning staff. Project 3 will include 2 load scenarios for upper <br />and lower density assumptions. This task assumes (2) meetings, one with City Planning staff to <br />determine total unit counts to assume for Arroyo Lago, Amazon, and East Lakes and one <br />meeting with BN Planning to determine upper and lower density unit counts. <br />Advanced Planning Projects Included in this Subtask: <br />3. East Pleasanton Master Plan <br />▪ Two model load scenarios will be developed to determine the impacts <br />of the upper and lower density scenarios. <br /> <br />Task 3 – Evaluate Adequacy of Sewer System and Assess Alignment Alternatives <br />Woodard & Curran will run the model for dry weather and design storm wet weather scenarios <br />and assess the capacity impact of the flows from the advanced planning projects included in <br />the analysis on the existing downstream sewers. Base wastewater flow unit flow factors, diurnal <br />wastewater flow profiles, infiltration/inflow parameters, design storm rainfall, and hydraulic <br />criteria will be based on those used for the Master Plan. Capacity deficiencies will be identified <br />based on the performance criteria established in the Master Plan. <br />The size and extent of public sewer capacity improvements (e.g., pipe upsizing) that may be <br />needed to serve each development project/scenario, and the sizing of any new or upsized <br />sewers will be determined. A planning level cost estimate will be developed for each capacity <br />improvement project, using the typical cost factors developed for the 2024 Sewer Capacity <br />Evaluation. <br />Subtask 3.1 <br />This subtask includes model runs for Project’s 1 and 2, including 2 model runs for Project 2’s <br />upper and lower density scenarios as defined in Subtask 1.1. If a capacity project is identified <br />under this subtask, the number of units required to “trigger” a capacity project will be <br />determined, and a planning-level cost estimate developed. This task also includes one (1) <br />coordination meeting with City staff to discuss findings. <br />Docusign Envelope ID: FD04895D-67BA-4A01-A55C-FDF87B5399C5Docusign Envelope ID: ECB15ECD-7A1F-4E85-B7A9-398949919095