STANTEC CONSULTING SERVICES, INC. (4)

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D. UNDERSTANDING SCOPE OF SERVICES With the rapidly growing number of regulatory levels and public health goals for per- and poly- PFAS compounds, and the additional planned regulations from both California and the USEPA; the City is planning ahead to address PFAS at your existing groundwater wells (regardless of current concentrations). Under the OCWD PFAS basin -wide program, five groundwater wells are currently in various stages of design and construction to treat the wells with IX treatment processes. With 21 existing groundwater wells providing a significant portion of the City's water supply, the swift and streamlined planning, design, and construction of additional groundwater treatment facilities is critical to minimize potential financial impacts from the costs of supplementing supply with imported water. In selecting design consultants to provide on - call planning study, design, bid phase support, and construction phase support services for the remaining impacted groundwater wells, we understand consultant services under this contract may be for any one or group of City owned groundwater wells. Well 26 has been identified as one facility requiring wellhead treatment. Approach This section outlines Stantec's proposed approach toward on -call planning in addressing City-wide treatment options, as well as design, bid, and construction phase services. Our approach is tailored for the specific considerations of Well 26 and is generally applicable to any of the City's other groundwater well sites. Project Management Our overall project administration and design supervision will be an on -going task from initial planning through construction and start-up of the treatment facilities. This task will include regular communication with City staff, other affected stakeholders, and internal project design staff. Monthly invoicing and project status reporting is also included. An initial kick-off meeting, regular progress meetings, and workshops will be conducted based on the needs of each on -call project assignment. Project management effort will be included separately in the planning tasks, and design services tasks. Schedule and Staffing We have identified staff who are available and committed for your on -call project. In turn, we also understand project schedules can change and staffing conflicts may arise during project delivery (see Preliminary Schedule). To proactively address keeping projects on schedule and budget, Stantec affords a broad network of resources accessible across multiple offices. As a large and integrated company, we use this staffing network to help mitigate staffing issues that may arise. As a recent example, for LADWP's San Fernando Groundwater Treatment design -build project, we mobilized close to 200 staff across 22 business centers/offices to deliver final design for 25- and 40-MGD treatment facilities within 12 months (over 2,000 drawings) — during the initial Covid-19 outbreak. Planning Study To provide a holistic and well-defined plan for PFAS treatment for impacted wells, the Stantec team proposes a systematic process with input from the City along with milestone workshop meetings. The process will begin by obtaining and reviewing water quality data, operations information, how each well is integrated with City reservoirs and the distribution system, along with performing site visits to all identified well sites. We believe planning is only as good as the information available. Fortunately, the Stantec team is already familiar with much of the City's wells and water operations. We will apply this knowledge to Well 26 and any other wells considered under this study. Additionally, we believe planning needs to be collaborative, and for the study as a whole and for each new site considered we value City input, preferences, and priorities. Our team has done infrastructure and treatment system planning for decades, including our recent work with the West Valley Water District and Sacramento County Water Authority among others, and you can ask them about our approach to executing those projects (see Relevant Experience). Our proposed work sequence consists of: + Kick-off Meeting with the City —Review and discuss scope of work, schedule, and work plan for the study. We will confirm the scope of and the intended results of the study, and the City's available information. �i(jret9Abta3q�rifiLf✓dffi14m}er earBe€S€Po$FraiDereftlr3jfsi�*Ta�dr�@fOS�/3i2'dds RFP NO. 22-133