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C I T Y O F S A N L U I S O B I S P O
FROM :
Jay D . Walter, Director of Public Work s
Prepared By :Bridget Fraser, Senior Civil Engineer 0 ~
SUBJECT : WATER RECLAMATION FACILITY : CLARIFIER 5 AND FACILIT Y
MAINTENANCE PAINTING PROJECT; SPECIFICATION NO . 9100 1
RECOMMENDATIO N
1.Approve the plans and specifications for "Water Reclamation Facility : Clarifier 5 & Facility
Maintenance Painting Project, Specification No. 91001" and authorize staff to advertise for bids .
2.Authorize the City Manager to award the contract if the lowest responsible bid is withi n
Engineer's Estimate of $250,000 .
DISCUSSIO N
This project involves maintenance painting of six areas at the Wastewater Reclamation Facilit y
(WRF). More specifically, work will involve cleaning, surface preparation, and recoating of :
1.Clarifier 5 ;
2.Chlorine contact station ;
3.Plant drainage pumping statio n
4. Filter building piping ;
5.Cooling tower station ; and
6. Equalization pond control structure .
This project must occur during a time when flows at the facility are at their lowest . During low-flo w
periods, one of the two final clarifiers can be taken out of service and the plant can still proces s
incoming flows and remain compliant with discharge requirements . Flows at the facility are lowes t
during the summer months when the California Polytechnic University is out of session and th e
City's population is reduced. Most WRF projects are scheduled to occur during this time period .
Clarifier No . 5 Coating
Clarifier No . 5 was originally constructed in 1994 as part of a major upgrade to the WRF . After 1 6
years of service, the protective coatings on the walls and equipment are showing signs o f
deterioration . The deteriorated coatings need to be replaced to protect the underlying surfaces fro m
deterioration and structural damage that would require more costly repairs or replacement .
Sacrificial anodes will be installed to provide added protection to the submerged mechanica l
equipment .
Facility Maintenance Paintin g
The WRF has been constructed in phases over the years with major expansions and upgrade s
occurring in 1941 through the most recent in 1994 . Facility piping and equipment can be anywher e
Meeting Date
April 6, 2010
Item NumIer
Clarifier 5 and Facility Maintenance Painting Project Page2
from 16 to 70 years old . Much of this equipment is showing signs of rust and corrosion . This is not
surprising due to the generally corrosive environment of the facility . Routine cleaning and recoatin g
of the facility is essential to slow the rate of corrosion and deterioration of the structures .
Recognizing this, WRF staff implemented an annual maintenance painting program to provid e
routine painting of these facilities . Areas in need of painting have been identified and prioritized b y
WRF staff. Three areas were taken care of in last year's maintenance painting project . Five
additional areas will be addressed with this project .
Bid Alternates-Award of Contrac t
Timing of this project is critical . In order to complete the clarifier coating before students return mid -
September the work must begin in early summer . However, if bids come in higher than expecte d
requiring staff to return to Council for an award, work would not begin until mid to late July . In thi s
case, the contractor will not have enough time to complete the work before students return . To stay
on track, it is essential that the City Manager award the contract as this would cut off nearly a mont h
of processing time allowing the work to begin early to mid June . To accommodate this, two of th e
painting sites are being bid as additive alternates to allow flexibility in awarding a project. Staff
recommends that the contract be awarded by the City Manager including or eliminating the bi d
alternates, as needed, to keep the award within the Engineer's Estimate of $250,000 .
CONCURRENCE S
The Utilities Department has reviewed and approved this project .
FISCAL IMPACT
The Clarifier No . 5 coating and the maintenance painting projects are identified in the 2009-1 1
Financial Plan on pages 3-133 to 3-137 of Appendix B . In the 2009-2010 project list, $175,000 i s
identified for cleaning, repairs, and recoating of Clarifier No . 5 and $100,000 is identified fo r
maintenance painting for a total budget of $275,000 . The estimated project costs are shown below :
Estimated Project Costs :
Design Phase Costs
$7,00 0
Printing/Misc .
$1,00 0
Construction Costs :
Clarifier 5 Coating & Repairs (Base)
$
175,00 0
Chlorine Contact Station Coating (Base)
$
25,00 0
Plant Drainage Pumping Station Coating (Base)
$
10,00 0
Fitler Building Piping (Base)
$
5,00 0
Cooling Tower Station Coating (Alt)
$
25,00 0
Equalization Pond Control Strucutre Coating (Alt)
$
10,00 0
Total Engineer's Estimate
$250,00 0
Contingencies @ 15%$38,00 0
Construction Management/Inspection @ 15%
$38,00 0
Total Estimated Project Costs :
$334,000
e..4
Clarifier 5 and Facility Maintenance Painting Project Page 3
The estimated total project cost of $334,000 exceeds the budget of $275,000 . For the most part thi s
is due to costs for construction management and higher-than-normal construction contingencie s
(15% rather than 10% due to a high potential for unknowns). However, given the competitiv e
bidding climate, it is possible that bids could come in lower than the Engineer's Estimate .
Due to the specialized nature of industrial coatings work it is recommended that inspection an d
construction management be handled by Advantage Technical Services, one of the City's on-cal l
inspection firms specializing in industrial coatings work . A work order for this work will be issue d
under their current contract .
Funding for this project is available in the Water Reclamation Facility Major Equipment Replacemen t
Master account which has a current balance of $1,274,809 . At time of award, funds will b e
transferred from the Master account to this project's accounts via a budget amendment request .
ALTERNATIV E
Defer the Project The City Council could choose to deny or defer contract award for the WR F
maintenance projects . Staff does not recommend this option due to the advanced age and conditio n
of equipment at the facility . If corrosion is allowed to continue, the facility equipment an d
components will continue to deteriorate to the point of requiring more costly replacement or repair .
ATTACHMEN T
Vicinity Map
AVAILABLE FOR REVIEW IN THE COUNCIL OFFIC E
Specification s
T :\Council Agenda Reports\Public Works CAR\2U10\CIF\91001 Clarifier 5-Facility Maintenance Painting \91U01 CAR Adv Cianrier 5- Painting .doc
ATTACHMENT
llqr" rn gs oBspo
Public Works Departmen t
919 Palm Street, San Luis Obispo, CA 93402
CITY MAP
CLARIFIER 5 COATING & FACILIT Y
MAINTENANCE PAINTING PROJECT
SPECIFICATION NO . 91001 SHEET 117 -0417 0
CITY OF SAN LUIS OBISP O
WATER RECLAMATION FACILIT Y
35 PRAM ROAD