MASTER PLAN OVERVIEW

Wastewater Facilities Master Plan

Origin of Plan

Burns & McDonnell complete the Wastewater Facilities Master Plan in 2012.

The 2012 Wastewater Master Plan updated the 2003 Wastewater Master Plan, coincided with development of a wastewater collection system model, and confirmed the construction timing for Wakarusa WWTP.

The City issued a Request for Proposals to prepare an updated Wastewater Facilities Master Plan and create a wastewater collection system model in October 2009. The City selected Burns & McDonnell and they started on the Plan in October 2009.

City-provided land use and population projections for years 2020, 2030 and project build-out provided the basis for the Wastewater Facilities Master Plan.

Expected outcomes from the plan

The expectations and goals of the 2012 Wastewater Facilities Master Plan included timing confirmation of the Wakarusa WWTP, creation of a dynamic model of the sanitary sewer system and a comprehensive plan of the wastewater system. The recommended improvements serve as the basis for design, construction and financing of facilities to: 1) meet current and expected regulatory requirements, 2) accommodate the City's growth within the evaluated scenario, and 3) address infrastructure reliability.

During development of the City capital improvement plan, the Municipal Services & Operations (MSO) Department evaluates the wastewater capital improvement program and its impact on the wastewater rate model. As changes occur in growth, regulation or infrastructure reliability from the evaluated scenarios, projects are eliminated, added and adjusted.

Funding

The Wastewater Facilities Master Plan included a capital improvements plan (CIP) with an estimate of probable costs and timing for each project. Staff prepared a 5-Year CIP funding plan with the Wastewater Facilities Master Plan and in 2015, contracted with Raftelis Financial Consultants to develop a new sewer rate model. The new model is the basis for the rates and system development charges the City Commission adopted in 2019 and 2019. Staff uses the rate model to project revenue needs, and to develop funding strategies and rate structures for equitable distribution of costs to customers.

Status Update

The following are a list of projects identified in the 2012 Wastewater Facilities Master Plan and the current status.

The following projects are complete:

· Wakarusa WWTP Construction (UT1304CIP)

The following programs are part of the 2019-2023 CIP:

· Rapid I/I Reduction Program: (UT9909CIP)

· Clay Pipe and Manhole Rehabilitation Program: (UT9908CIP)

· Annual Maintenance WWTP - 2013-2020: (UT9906CIP)

· Annual Maintenance – 2 Plants - 2021-2030: (UT9907CIP)

· Annual Maintenance Pump Stations - 2013-2030: (UT9905CIP)

Other identified projects that are underway or planned in the 2019-2023 CIP include:

· 21” Gravity Sewer to Eliminate PS 8: (UT1892CIP)

· Collection System Field Operations Building: (UT1884CIP)

· PS 9 Expansion to 14 MGD: (UT2184CIP, UT2185CIP, and UT2188CIP)

· Kansas River WWTP Nutrient Removal: (UT2294CIP)

Besides specific projects included in the 2012 Wastewater Facilities Master Plan, the City coordinates with developers on growth-related infrastructure improvements.

Future

The MSO Department will continue the identified collection system rehabilitation and facility maintenance programs. Dependent on community growth rates, regulatory changes and or discovered reliability issues, the following projects are subject to changes in schedule and scope:

· PS 25 Expansion to 4.4 MGD, Add 3^rd Pump

· PS 25 Expansion to 6 MGD, Parallel 12” Forcemain

· KR-5C 12” Relief Sewer

· KR-6B 24” Relief Sewer

· PS 48 Expansion to 6.4 MGD

Traditional master plan processes are being enhanced by dynamic asset management systems that provide more accurate project planning, can detect and adapt to changing conditions, and do a better job at determining project needs, scope, timing, and relative priority. Within those processes are considerations of the objectives of the Strategic Plan, affordability, and equitable distribution of costs. The program scope recommendations provided in the 2012 Wastewater Facilities Master Plan provides the framework to analyze system deficiencies to discern and prioritize specific projects. City staff reviews data from yearly sanitary sewer flow monitoring, model analysis, inspections, staff observations and other information to differentiate projects within the established programs and adjust scope/timing of identified projects.