Project 142 - Proposal - Hamers - 1995-05-23 NI ROBIN B. HAMERS
234 E 17TH ST SUITE 205
& ASSOCIATES, INC. COSTA MESA, CA 92627
CIVIL ENGINEERS PLANNERS SURVEYORS 17141 54a-1192
May 23 1995
Board of Directors
Costa Mesa Sanitary District
P 0 Box 1200
Costa Mesa CA 92628
RE PROPOSAL TO BEGIN PROJECT
PROJECT 1112100-142
RECONSTRUCTING FORCE MAIN FOR ADAMS PUMP STATION
Dear Board of Directors
Enclosed is the project description as thoroughly described in
the 1994-95 Capital Improvement Program The project consists of
rehabilitating the 2400 foot long force main (pressure sewer
line) which was originally installed in 1964 and has experienced
two ruptures causing sewage spills
Based on the section of pipe taken from the 1994 rupture the
entire line probably has a very thin wall thickness and will
continue to experience problems unless adequately replaced or
rehabilitated The section of pipe is in the District Engineer' s
office for inspection if so desired
As described in the attached project description there are three
options for resolving the problem A parallel force main may be
built or a new force main may be built in a different direction
to a different outlet or a liner may be installed in the
existing line After research and cost estimates are prepared
the most advantageous solution will be selected
As shown in the 1994-95 budget it is proposed to complete the
design phase at the standard hourly rates shown below including
the cost of soils engineering and structural engineering not to
exceed $25 000
Engineer $ 59 00/hr
Drafting 47 00/hr
2 man Survey Crew 150 00/hr
3 man Survey Crew 170 00/hr
Please note that billing is only for actual time spent
Si cerely
Robin B Hamers
RBH/jp/proposal cms
f. Printed on Recycled Paper
EXCERPT FROM 1994-95 CIP
Project 1112100-142
Reconstructing Force Main for Adams Pump Station
The Adams Avenue pumping station and force main were originally
constructed in 1964 Since then the pumping station has
undergone a remodel in 1985 with another remodel pending while no
work has been done on the 8 inch asbestos cement force main
In December 1985 the force main experienced a rupture and was
repaired on an emergency basis In February 1994 the force main
again ruptured and the total repair cost $17 587 since the leak
caused extensive damage to the Adams Avenue asphalt road surface
The ruptured pipe that was replaced shows extensive thinning of
the pipe wall thickness and is available for inspection in the
District office The thinness of the pipe wall allowed a crack
to occur which developed into a rupture Since the entire force
main probably has the thin wall condition it is desired to
rehabilitate the line Both the 1985 and 1994 ruptures caused
sewage spills
There are three options for the rehabilitation Construction of
a 2400 foot parallel force main made from ductile iron pipe or
construction of a 700 foot ductile iron pipe force main heading
westerly towards and into the Adams Avenue bridge to an eventual
point of connection with Orange County Sanitation District
facilities in Huntington Beach or installation of a liner such
as Insituform into the existing force main
The decision on the rehabilitation method will be made after
conferences with slip line manufacturers the County of Orange
who own the Adams Ave bridge and the City of Costa Mesa who
have a street cut moratorium on Adams Avenue since it was
recently repaved
An estimate of the project costs is as follows
Design $ 25 000
Construction 250 000
Inspection 25 000
Reserve or Contingency 50 000
TOTAL $ 350 000
Boyle Engineering Corporation
consulting encineers l architects
150 Goat Street 714/475-3300
PG d03(' FAX 774/727 7142
Newport beach, GA 92658-9020 Telex 685561
,TRPWISPORTRTIO(l SERVICES
Mr Robin Hamers, District Manager/Engineer July 7 1994
COSTA MESA SANITARY DISTRICT
P O Box 1200
Costa Mesa, CA 92628-1200
1994-95 Capital Improvement Program (CIP) Review
I have completed my review of the Costa Mesa Sanitary District(District)'s CIP report for the 1994-95
fiscal year
The review consisted of reading the project descriptions,telephone conversations with District staff
(Robin Hamers)and an independent analysis of construction costs, design and construction engineering
costs,and contingency costs.
The following represents my analysis of each of the CIP projects:
This is the third independent review of the District's CIP program, 1992-93 being the first year reviewed.
The 1994-95 proposed improvement projects appear warranted and the report continues to properly
reflect the on-going capital improvement program.
Project 1112100-139 Congress Pump Station Abandonment
This is the second of several projects to eliminate pump stations.
Based on discussions with staff approximately 1300-feet of 12-inch sewer will be constructed.
Project will abandon the existing pump station, and will include new manholes as well as revamp of
several others.
For budget purposes the estimated design/construction cost and contingency cost appears reasonable.
It is suggested that future and similar projects include a location/vicinity map, estimated footage of
pipe to be placed and other appropriate items(major).
Project 112100-140 Reconstructing Various Sewer Line
This project is similar to previous years projects and is in keeping with the Districts rehab and
maintenance program.
Previous years projects were Nos. 122, 126 & 132.
Mr Robin Hamers July 7 1994
Page 2
This project will utilize Link-Pipe or remove and replace construction techniques depending upon
conditions found during design.
The construction budget will allow for repairs at approximately 30± locations.
Because of numerous locations the design, inspection and contingency budget appears to be
reasonable.
Project 1112100-141 Televising Sewer Lines
As discussed for previous CIP programs and with District staff this is a service type project not
construction. Therefore, normal design,construction and inspection percentages do not apply
However, it is suggested that other terms be used rather than `Design and Construction.
The estimate televising costs represents approximately 11,000 of pipe to be televised at$.45/1f based
on discussions with District staff.
Because of the nature of the project and that District staff is needed at all times for cleaning ahead of
the camera, coordination, and supervision of the work, the District Engineer costs will be higher,
percentage wise,versus a design project.
It is suggested that for future similar projects the first three items above be included in the project
description to more clearly define the scope of work.
Project 1112100-142 Reconstruct Force Main at Adams Pump Station
Pump Station was constructed in 1964, remodeled in 1985 force main ruptured in 1985 and in 1994
Outside of repairs no replacement work has ever been done on the asbestos-cement force main.
Because of recent street construction,the City may invoke its street cut moratorium which means
alternatives will need to be studied.
The options contained in the OP program appear reasonable. Care should be taken in working with,
removal and disposal of the asbestos cement pipe.
The budget appears reasonable for design and inspection. Depending upon the option selected the
contingency could be low for handling and disposal of the existing asbestos-cement pipe.
Project 1112100-143 Reimbursement for Sewer Work by Others
Project description adequately describes what is programmed and why the District needs to
appropriate funds for this function.
As stated previously it might be beneficial to indicate the estimated/anticipated number of manholes
to purchase and/or reconstruct. This estimate could be made based on past history of similar work.
It is suggested that the District provide and/or have for staff/Board information and for independent CIP
review a bid recap/data base of past projects that could list the main items of the project, i.e,
Mr Robin Flamers July 7 1994
Page 3
size/length/lump sum/unit cost. This information could be used as a supplement to the CIP program and
would provide a better understanding of how future projects are estimated. Also, it is suggested for
specific projects that a vicinity map and other pertinent items be made a part of the CIP program.
It was a pleasure working with you and providing services to the Costa Mesa Sanitary District. If you
have any questions or if I can be of further service, please call me at(714)476-3369
Boyle Engineering Corporation
Bruce D Mattern, PE, TES,
Managing Engineer
OC-C62-100-02/sab
LTRHMRS 0C32