Memorandum

City of Lawrence

Utilities Department

TO:	David L. Corliss – City Manager Cynthia Wagner - Assistant City Manager Diane Stoddard - Assistant City Manager
FROM:	Mike Lawless – Deputy Director of Utilities
CC:	Dave Wagner – Director of Utilities Philip Ciesielski – Assistant Director of Utilities Beth Krishtalka – Assistant to Director Bob Brower – Utilities Operations Superintendent
Date:	July 2, 2013
RE:	Agenda Item – Execute an Engineering Services Agreement with TREKK Design Group, LLC for Project UT1305 - Rapid Inflow and Infiltration Reduction

Please include the following item on the City Commission Agenda for consideration at the July 2, 2013 meeting:

Authorize the City Manager to Execute an Engineering Services Agreement, in the amount of $1,228,934 with TREKK Design Group, LLC for Project UT1305 - Rapid Inflow and Infiltration Reduction.

Project Description

The 2012 Wastewater Master Plan and Capital Improvements Program recommend the implementation of a Rapid Inflow and Infiltration (I/I) Reduction Program. The objective of the Rapid I/I Program is an overall 35% reduction of I/I within the shaded area shown in the attached map. These areas have the largest influence on the peak wet weather flows at the Kaw WWTP. Reducing I/I by 35% eliminates the need to construct projects that address system capacity deficiencies in the Burrough’s Creek interceptors and the need for wet weather treatment capacity expansion at the Kaw WWTP.

The Rapid I/I Program will study, rehabilitate, and monitor the public and private sanitary sewer systems in the identified area. The program will start with a Sanitary Sewer Evaluation Study (SSES) of the area. The SSES will provide a detailed analysis of the public and private systems and recommend rehabilitation methods to achieve the desired I/I reduction. The study will include a combination of activities including flow monitoring, smoke testing, TV inspections, manhole inspections, and building inspections.

Project History

On March 12, 2013, the City Commission authorized staff to advertise a Request for Proposals for Engineering Services for the Rapid Inflow and Infiltration Reduction Program.

On April 12, 2013, in response to the Request for Proposals, staff received proposals from three (3) firms interested in the project. Proposals were received from CH2MHILL, Inc., TREKK Design Group, LLC, and George Butler Associates, Inc.

On May 14, 2013, the City Commission authorized staff to negotiate an engineering services agreement with TREKK Design Group, LLC.

Project Status

Staff has negotiated an appropriate scope and fee for Phase I of the 8 year Rapid I/I Reduction Program. The fee for the Phase I services is $1,228,934. The Phase I scope includes

Public & private sanitary sewer system investigations which includes smoke testing 100,000 feet of sanitary sewers, 501 manhole inspections, dye testing, and 17,400 feet of CCTV inspections
Development of long-term flow monitoring and hydraulic modeling plan
Development of the Private I/I Abatement Program
Post rehabilitation I/I data analysis and modeling
Implementation of the Private I/I Abatement Program which includes building inspections for 1,450 buildings, private sector dye testing, procurement of plumbing contractors, private I/I disconnect program for 582 buildings, and CCTV analysis and recommendations for private sewer laterals for 1,450 buildings

Before any work or inspections are performed on private buildings, staff and TREKK will develop and present the Private I/I Abatement Program to the City Commission for approval. The Private I/I Abatement Program will be a comprehensive description of the goals, policies, procedures, and funding to implement the program.

Analysis of the data from the public and private sanitary sewer system investigations and from the Private I/I Abatement Program will generate work orders to correct the defects. Correction of the defects will include lining sanitary sewers and manholes and disconnecting I/I sources identified in the buildings with new and existing construction/service contracts procured during the initial tasks of this Phase I contract.

Project Funding

The project is included in the Department of Utilities 2013 Rate Plan and Capital Improvement Program.

Action Request

Authorize the City Manager to Execute an Engineering Services Agreement, in the amount of $1,228,934 with TREKK Design Group, LLC for Project UT1305 - Rapid Inflow and Infiltration Reduction.

Thank you for your assistance. Please advise if you have any questions.