HomeMy WebLinkAbout09-17-2013 C7 water reclamation
FROM: Daryl R. Grigsby, Director of Public Works
Prepared By: Michael J. McGuire, Engineer III
SUBJECT: WATER RECLAMATION FACILITY DIGESTER 2 CLEANING,
SPECIFICATION No. 91199
RECOMMENDATION
Award a contract to JND Thomas Co. Inc. in the amount of $101,963 for the “Water Reclamation
Facility Digester 2 Cleaning, Specification No. 91199”.
DISCUSSION
On August 7, 2013, the City Manager authorized inviting bids for the “Water Reclamation Facility
Digester 2 Cleaning, Specification Number 91199” as it was anticipated the bids would be below
the $100,000 threshold for City Manager authority. Two bids were opened on September 5, 2013,
with both bids exceeding the Engineer’s Estimate of $90,000. JND Thomas Co. Inc. of Riverdale,
California was the lowest bidder with a proposal of $101,963.
Earlier this year, the Water Reclamation Facility (WRF) staff determined that with the increased
clogging problems of the Digester 2 tank, cleaning needs to be completed as soon as possible to
prevent tank spills. Normally, the interior of the tank would be recoated after cleaning, but due to
the good condition of the tank interior and the urgency of eliminating the clogging conditions within
the tank, only cleaning and minor repairs will be performed.
Currently, the Digester 2 tank has been taken out-of-service to drain the tank of as much filtrate as
possible in preparation for the cleaning work to be done. Historically, plant flows have been the
lowest in the summer but with local schools back in session, plant flows will increase to the point
where the Digester 2 tank will need to become operational. Staff recommends awarding the
contract to expedite this work.
CONCURRENCES
This project has the concurrence of the Utilities Department.
FISCAL IMPACT
The 2013-15 Financial Plan, Appendix B, pages 3-166 to 3-170, identifies $250,000 to empty,
clean and repair Digester 2 in 2013-14. Due to the urgency for cleaning of the tank and the
acceleration of the schedule, repair and coating work will be minimal. The majority of project
work will be solely for emptying and cleaning of the digester tank.
Meeting Date
Item Number Sept. 17, 2013
C7
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WRF Digester 2 Cleaning (91199)
Project Budget Available: $250,000
Construction: 101,963
Construction Contingency: 11,000
Printing/Advertising: 135
Project Costs: $113,098
ALTERNATIVE
Deny or defer approval for construction. The City Council may choose to deny or defer the
approval for award of this project. Staff does not recommend this option. Should this be denied or
deferred, cleaning to Digester 2 will be delayed. Pipe clogging will continue and require additional
maintenance to keep operational. Cleaning delays could result in a tank spill and possible penalties
from state and federal water quality agencies.
ATTACHMENTS
1. Bid Summary
2. Copy of original City Manager Report authorizing advertising
3. Contract
T:\Council Agenda Reports\2013\2013-09-17\Water Reclamatin Facility Digester 2 (Grigsby-McGuire)\CAR Water Reclamation Facility
Digester.docx
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Item #Item Description Quantity Unit of Measure Unit Price Item Total Unit Price Item Total Unit Price Item Total
1 MOBILIZATION / DEMOBILIZATION 1 LS $5,000.00 $5,000.00 $25,718.00 $25,718.00 $3,454.42 $3,454.42
2
AIR DIFFUSER AND DIFFUSER COVER
REMOVAL & REPLACEMENT 1 LS $15,000.00 $15,000.00 $8,573.00 $8,573.00 $8,313.04 $8,313.04
3 (S) DIGESTER CLEANING 1 LS $65,000.00 $65,000.00 $66,672.00 $66,672.00 $109,213.89 $109,213.89
4 COMPLY WITH OSHA 1 LS $5,000.00 $5,000.00 $1,000.00 $1,000.00 $1,854.44 $1,854.44
Bid List $90,000.00 $101,963.00 $122,835.79
$90,000.00 $101,963.00 $122,835.79 Total Bid Amount
Listed Subs
Bid Schedule
US US
Bidder Status: Under Bidder Status: Under Review
Water Reclamation Facility Digester 2 Cleaning, Specification No. 91199
Owner: City Of San Luis Obispo
Bid Opening: 09/05/13 * marks an allowance Engineer's Estimate JND Thomas Co., Inc
Ellison Environmental Inc.
dba Fluid Resource
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CITY MANAGER REPORT
Final City Manager Approval Approver Name Date Approved
City Administration DJJ 08/05
Reviewer Routing List Reviewer Name Date Reviewed
City Attorney JCD 8/7
City Engineer Barbara Lynch August 7, 2013
Finance & Information Technology WP 8/7/13
Utilities DCH 8/7/13
August 6, 2013
FROM: Daryl R. Grigsby, Director of Public
Works DG 8/7/13
PREPARED BY: Michael J. McGuire, Engineer III
SUBJECT: WATER RECLAMATION FACILITY DIGESTER 2 CLEANING,
SPECIFICATION No. 91199
RECOMMENDATIONS
1. Approve plans and specifications for "Water Reclamation Facility Digester 2 Cleaning,
Specification No. 91199”.
2. Authorize staff to advertise for bids.
3. Approve a transfer of funding from the WRF Facility Major Maintenance Account to the project
Construction account at the time of contract award.
DISCUSSION
The digesters at the Water Reclamation Facility (WRF) are cleaned and repaired approximately
once every 8 to 10 years. This periodic maintenance is necessary to prevent more costly facility
replacements, and is effective in protecting the digesters from their harsh environment.
Digester 2 was last cleaned and repaired in 2006. Recently, WRF staff has encountered unusual
clogging of the influent and effluent piping for the digester tank. This clogging is caused by a
buildup of sewage material resistant to breakdown during the regular treatment cycle. The buildup
and subsequent clogging inside the digester tank leads to increased maintenance by WRF staff and
increases the potential for a sewage spill at the facility.
To eliminate this problem, Digester 2 tank will be cleaned. The maintenance consists of emptying
and dewatering the sludge from the digester, cleaning the digester’s interior, minor repair of
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WRF Digester 2 Cleaning (91199) Page 2
concrete surfaces as needed, cleaning the heat exchangers, gas diffusers and other digester
equipment as needed.
Staff recommends approval of the plans and specifications, and to advertise this project so that
construction can occur this early fall, before the rainy season. Sewage flows are still low at this
time of the year and the impacts to the daily operations of the WRF can still be minimized.
CONCURRENCE
The project has the concurrence of the Utilities Department.
FISCAL IMPACT
The 2013-15 Financial Plan, Appendix B, pages 3-166 to 3-170, identifies $250,000 to empty,
clean and repair Digester 2 in 2013-14. Due to the urgency for cleaning of the tank and the
acceleration of the schedule, repair and coating work will be minimal. The majority of project
work will be solely for emptying and cleaning of the digester tank and should not exceed
$100,000.
ALTERNATIVE
Deny approval of award. The City Manager could choose to deny or defer the approval for
advertising of this project. Staff does not recommend this option. Should this be denied or
deferred, cleaning to Digester 2 will be delayed. Pipe clogging will continue and require additional
maintenance to keep operational. Cleaning delays could result in a tank spill and possible penalties
from state and federal water quality agencies.
ATTACHMENT
1. Special Provisions
\\chstore4\Team\City Manager Reports\Public Works\2013\CIP\91199 WRF Digester 2 Clean\91199 eCM Advertise.docx
Fiscal Impact Summary 2013-14
Approved Project Budget:250,000$
Engineer's Estimate Construction:90,000$
Construction Contingencies:9,000$
Total for Construction:99,000$
Printing & Advertising:500$
Total Cost of Project:99,500$
Project Budget Remaining:150,500$
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CITY OF SAN LUIS OBISPO
CALIFORNIA
FORM OF AGREEMENT
THIS AGREEMENT, made on this ______ day of ___________, 2013, by and between the City
of San Luis Obispo, a municipal corporation and charter city, San Luis Obispo County, California
(hereinafter called the Owner) and JND THOMAS CO., INC (hereinafter called the Contractor).
WITNESSETH:
That the Owner and the Contractor for the consideration stated herein agree as follows:
ARTICLE 1, SCOPE OF WORK: The Contractor shall perform everything required to be
performed, shall provide and furnish all of the labor, materials, necessary tools, expendable
equipment, and all utility and transportation services required to complete all the work of
construction of
WRF DIGESTER 2 CLEANING, SPECIFICATION NO. 91199
in strict accordance with the plans and specifications therefor, including any and all Addenda,
adopted by the Owner, in strict compliance with the Contract Documents hereinafter enumerated.
It is agreed that said labor, materials, tools, equipment, and services shall be furnished and said
work performed and completed under the direction and supervision and subject to the approval
of the Owner or its authorized representatives.
ARTICLE II, CONTRACT PRICE: The Owner shall pay the Contractor as full consideration for
the faithful performance of this Contract, subject to any additions or deductions as provided in the
Contract Documents, the contract prices as follows:
Item
No. Item Unit of
Measure
Estimated
Quantity
Item Price
(in figures)
Total
(in figures)
1. Mobilization / Demobilization LS 1 $25,718.00 $25,718.00
2. Air Diffuser and Diffuser Cover
Removal & Replacement LS 1 $8,573.00 $8,573.00
3. (S) Digester Cleaning LS 1 $66,672.00 $66,672.00
4. Comply With OSHA LS 1 $1,000.00 $1,000.00
BID TOTAL: $101,963.00
Payments are to be made to the Contractor in accordance with and subject to the provisions
embodied in the documents made a part of this Contract.
Should any dispute arise respecting the true value of any work omitted, or of any extra work which
the Contractor may be required to do, or respecting the size of any payment to the Contractor,
during the performance of this Contract, said dispute shall be decided by the Owner and its
decision shall be final, and conclusive.
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ARTICLE III, COMPONENT PARTS OF THIS CONTRACT: The Contract consists of the
following documents, all of which are as fully a part thereof as if herein set out in full, and if not
attached, as if hereto attached:
1. Notice to Bidders and information for bidders.
2. Standard Specifications, Engineering Standards, Special Provisions, and any
Addenda.
2. Accepted Proposal.
4. Public Contract code Section 10285.1 Statement and 10162 Questionnaire.
5. Noncollusion Declaration.
6. Plans.
7. List of Subcontractors.
8. Agreement and Bonds.
9. Insurance Requirements and Forms.
ARTICLE IV. It is further expressly agreed by and between the parties hereto that should there
be any conflict between the terms of this instrument and the bid or proposal of said Contractor,
then this instrument shall control and nothing herein shall be considered as an acceptance of the
said terms of said proposal conflicting herewith.
IN WITNESS WHEREOF, the parties to these presents have hereunto set their hands this year
and date first above written.
CITY OF SAN LUIS OBISPO,
A Municipal Corporation
_____________________________
Katie Lichtig, City Manager
APPROVED AS TO FORM: CONTRACTOR
_____________________________
Christine Dietrick JND THOMAS CO., INC
City Attorney Dennis Thomas, President
(Rev. 12-28-09)
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