HomeMy WebLinkAbout10/02/1990, C-10 - INFILTRATION/INFLOW (I/I) REDUCTION PROGRAM, TV INSPECTION SYSTEM FOR WASTEWATER COLLECTION SYSTEMS MEETING DATE:
city of San tins OBISpo 990
;dil il'�'h .4i October 2 1
ITEM NUMBE
MaZe COUNCIL AGENDA REPORT -io
FROM: William T. Hetland `, , Prepared By: John E. Moss n/)
Utilities Director V" Wastewater Division Manager p'I
SUBJECT:
Infiltration/Inflow (I/I) Reduction Program, TV Inspection
System for Wastewater Collection Systems, Request For
Proposals.
CAO RECOMMENDATION:
By motion, approve Request For Proposals for TV Inspection
System for Wastewater Collection Systems, Specification No.
90-10-02, and authorize soliciting of proposals and contract
award by the CAO, if the lowest responsible proposal (bid)
is within the Engineer's cost estimate of $105,000.
DISCUSSION:
BACKGROUND
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The City's wastewater collection system has long been
troubled with excessive wet weather I/I and subsequent
surcharging and overflows. In July 1989, Council directed
staff to develop and implement a program aimed at reduction
of I/I in lieu of installing additional relief sewers. On
June 12, 1990 an I/I reduction program was submitted to
Council as a 1990-91 budget adjustment. Council approved
the program with an estimated operating program cost of
$70, 900 for FY 1990-91 and capital expenditures of $139, 000
for the required equipment.
The purchase of a TV (video) inspection system for the
collection system was identified in the capital expenditure
request with an estimated cost of $105, 000. The TV
inspection system will be one component used to identify and
prioritize required repairs to the collection system for I/I
reduction. TV inspection is an invaluable tool in I/I j
reduction as it enables staff to visually identify the
location and severity of damaged sewer lines and aids in
determining the most cost effective method of
rehabilitation. The TV inspection system will also be
utilized by the City's Industrial Waste Inspector to
identify and record illegal discharges and connections to
the collection system.
Since approval of the request, staff has consulted with
numerous other municipalities currently using TV inspection
for identification of I/I. This information has been
utilized in the development of the RFP. Staff has elected
city of san tuis osispo
ONGe COUNCIL. AGENDA REPORT
I/I Reduction Program
Oct. 20 1990
Page 2
to use the RFP for procurement of this equipment rather than
developing detailed specifications as the video equipment is
very complex and staff currently does not have the technical
expertise to develop detailed specifications. The RFP is
however, written in sufficient detail to insure the City
receives a quality system sufficient to meet the present and
future needs of the City's I/I teduction program.
TV INSPECTION SYSTEM
Minimum requirements for the TV inspection system have been
included in the RFP. The basic system will consist of a
step van for transporting and housing the equipment, a
radial view camera which enables the operator to inspect the.
full circumference of the sewer line and the lateral
connections, video cassette recorder and related
electronics, and miscellaneous equipment necessary for
insertion of the camera into and transportation through the
collection system. Detailed specifications for the step van
have been developed with the assistance of the City Vehicle
Maintenance Supervisor and are included in the RFP. .
CONSEQUENCES OF NOT TAKING THE RECOMMENDED ACTION
Not taking the recommended action will delay and/or inhibit
the effectiveness of the I/I reduction program. Failure to
include the video . inspection system in the I/I reduction
program will result in staff basing rehabilitation decisions
on only quantitative data, rather than qualitative and
quantitative data, and may result in not attaining the most
cost effective I/I reduction possible.
FISCAL IMPACT:
Funding for the TV inspection system was estimated at
$105,000 and was approved by Council on June 12, 1990 as a
1990-91 Budget Adjustment Request (Page A-8 of the 1989-91
Financial Plan and Approved 1990-91 Budget) . Funding source
is the Sewer Fund. This request is in accordance with the
procedures established in the City Purchasing Control
Manual, section 401-3 . Supplies and Equipment greater than
$10, 000.
Prior capital expenditure related to the I/I reduction
program has been $13 ,200 for the purchase of the necessary
flow monitoring equipment.
Total I/I Approved Capital Funding $139, 000
Prior Expenditures (Flow Monitors) $ 13 , 200
Engineer' s estimate (TV Inspection) $1051000
/o 02
City Of SAI1 LUIS OBISPO
jilpl
COUNCIL AGENDA REPORT
I/I Reduction Program
Oct. 2 , 1990
Page 3
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ALTERNATIVES:
Contract services may be utilized to perform the video
inspection work. This alternative is not recommended as
staff feels that it would not be cost effective on the long
term basis of the I/I reduction program. Contract video
inspection services cost between $750 and $1, 000 per day.
RECOMMENDATION:
By motion, approve Request For Proposals for TV Inspection
System for Wastewater Collection Systems, Specification No.
90-10-02, and authorize soliciting of proposals and contract
award by the CAO, if the lowest responsible proposal (bid)
is within the Engineer's cost estimate of $105, 000.
® Attachment:
1. Request For Proposals (available in Council Office)
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