Memorandum

City of Lawrence

Utilities Department

TO:	David L. Corliss – City Manager Cynthia Wagner - Assistant City Manager Diane Stoddard - Assistant City Manager
FROM:	Philip Ciesielski – Assistant Director of Utilities
CC:	Dave Wagner – Director of Utilities Mike Lawless – Assistant Director of Utilities Beth Krishtalka – Assistant to Director Mark Hegeman – Utilities Operations Superintendent Dave King – Utilities Maintenance Superintendent
Date:	April 10, 2013
RE:	Agenda Item – Execute an Engineering Services Agreement with Professional Engineering Consultants for Design and Construction Phase Engineering Services for Project UT1302CS Pump Station PS04 Redundant Forcemain

Please include the following item on the City Commission Agenda for consideration at the April 16, 2013 meeting:

Authorize the City Manager to Execute an Engineering Services Agreement, in the amount of $174,760.00, with Professional Engineering Consultants for Design and Construction Phase Engineering Services for Project UT1302CS Pump Station PS04 Redundant Forcemain

Project Description

Sanitary sewer Pump Station PS04 is located at 810 Walnut Street and has a firm

capacity of 2800 gpm. PS04 delivers all of North Lawrence’s sanitary sewer flows

south across the Kansas River to the Wastewater Treatment Plant at 1400 E. 8^th

Street. PS04 has 2 existing forcemains; 1 each 1956 8” diameter steel which is

currently out of service, and 1 each 1974 18” diameter cast iron and steel. See

the attached map.

In January the Department of Utilities was alerted by a citizen to the presence of an

exposed section of pipe in the north riverbank. Investigation by Staff determined the

exposed pipe to be the 8” 1956 forcemain from PS04. Approximately 75 ft of the

forcemain has become exposed due to riverbank erosion. See the attached photos.

After an evaluation of the forcemain’s existing condition, risk of failure and the

operational parameters of PS04, it was determined that the forcemain should be isolated

from the system to prevent any discharge of sewage to the Kansas River in the event

the pipe failed. In preparation for taking the forcemain out of service it was “pigged”

clean and flushed out. The 8” forcemain is now isolated from the system. The existing 18” forcemain is hydraulically adequate to convey the pump station’s firm

pumping capacity.

Information from the original plans shows the construction of the 8” forcemain to have been to a depth of only five (5) feet below the river bed as it existed in 1956. Based on this, the condition of the exposed pipe and the risk associated with attempting to recover the exposed section the Department of Utilities recommends pursuing the installation of a new, redundant forcemain from PS04 to the Wastewater Treatment Plant to provide reliable sanitary sewer service to North Lawrence.

Project History

On February 5, 2013, the City Commission authorized staff to advertise a Request for Proposals for Engineering Services for the Pump Station PS04 Redundant Forcemain Replacement. 

On March 1, 2013, in response to the Request for Proposals, staff received proposals from five (5) firms interested in the project. Proposals were received from BG Consultants/Burns & McDonnell; Bartlett & West; HDR; Professional Engineering Consultants (PEC), and Wilson & Company.   

On March 26, 2013 the City Commission authorized Staff to negotiate an engineering services agreement for the project.

Project Status

Staff have negotiated an appropriate scope and fee for the design, permitting, bidding and construction phase engineering services related to the construction of a new Pump PS04 Forcemain in the amount of $174,760.00 as broken down below. Also shown is the fee as a percentage of the $1,584,121.75 estimated construction cost. The complete scope of services, fee and construction cost are based on the services required to design and construct the longest potential forcemain route and the possibility of constructing two parallel forcemains to properly convey the range of flow rates from Pump Station PS04.

Basic Design Services                    $97,422.00*   6.1%

Geotechnical Subcontractor            $18,370.00    1.2%

Permitting and Geotechnical              $9,470.00    0.6%

Easement Acquisition                      $6,398.00    0.4%

Bid Phase                                     $3,032.00    0.2%

Construction Phase Services           $40,068.00    2.5%

                                                $174,760.00

*Based on the City of Lawrence Design Fee Guidelines the expected Basic Design Services Fee as a percent of construction for a $1,584,121.75 project is 7.7%.

The negotiated fee includes all required design services; sub-consultant services related to geotechnical borings; survey; required State of Kansas and US Corps of Engineers (USCOE) permitting; bidding phase services; and construction phase services including submittal review, progress meeting attendance, and construction inspection.

Project Funding

Funds for project design are from the Department of Utilities non-bonded construction fund.

Action Request: Authorize the City Manager to Execute an Engineering Services Agreement, in the amount of $174,760.00, with Professional Engineering Consultants for Design and Construction Phase Engineering Services for Project UT1302CS Pump Station PS04 Redundant Forcemain

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