UPLB STP DAED TOR June 21 2018
UPLB STP DAED TOR June 21 2018
UPLB STP DAED TOR June 21 2018
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PROJECT DESCRIPTION
This project covers the design of the rehabilitation of the University of the Philippines Los Banos (UPLB)
Sewage Treatment Plant (STP). The project site is the existing UPLB STP located along Rambutan Road, UPLB,
Los Banos, Laguna (Annex “A”).
The plans and designs shall be in accordance with the UPLB-approved Terms of Reference (TOR) for this
project.
BACKGROUND
The existing UPLB’s Sewage Treatment Plant (STP) was originally constructed in the late 1960’s using Trickling
Filter (TF) system. The facility was designed to receive wastewater from buildings in the lower campus and the
houses at UP Cornell (UPCO) Staff Housing. The wastewater flows generated from the buildings in the lower
campus and the housing units are conveyed to the STP facility through a network of sewer lines. According to
records, the sewer network was also originally built in the 1960s. The sewer network can be separated into 2
main branches. The flows coming from UPCO and Biosciences are conveyed through a sewer main along
Victoria Ela Road. The sewer main then crossed the Molawin Creek from Victoria Ela Road to Rambutan Road
through a pipe bridge. Meanwhile, the flows coming from Vet-Med area are conveyed to the STP through a
sewer main buried under Aglibut Avenue Road through to the STP.
Inlet structure which include, flow meter, Parshall flume, bar screen and comminutor
Wet and dry sewage pump station
Control building
2 primary clarifiers
2 TF
2 final clarifiers
1 digester
4 sludge drying beds
Meanwhile, the following are the original design parameters of the STP:
Average dry weather flow: 2.27 MLD (0.60 MGD) for 3 units TF (However, only 2 units were
constructed with the 3rd TF for future expansion)
Peak flow: 5.67 MLD (1.50 MGD) for 3 units TF (However, only 2 units were
rd
constructed with the 3 TF for future expansion)
Peak factor: 2.50
Minimum flow: 0.75 MLD (0.20 MGD)
Influent BOD5 (mg/L): 150 mg/L
Influent TSS: 200 mg/L
Recirculation ratio: 2:1
The STP was in operation until 1999 when it fell into disrepair. In 2002, UPLB rehabilitated the facility and
operated it again for a few years before falling again to disrepair mainly due to unavailability of trained
operator. At present, the wastewater coming from the campus is discharged into the STP’s receiving water
body, the Molawin Creek, through the STP’s bypass pipe. In addition, the pipe bridge carrying the sewer main
from Victoria Ela Road was destroyed in 2009 by typhoon Milenyo. Thus at present the sewer main along
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Victoria Ela Road is discharging wastewater directly to Molawin Creek. UPLB is presently planning for the
reconnection of this sewer main to the STP once the latter is rehabilitated and operational.
Based on a study conducted in 2012 by an Ad-Hoc Committee on the Rehabilitation of the UPLB STP, it was
found that most, if not all of the electro-mechanical parts and equipment of the facility have deteriorated and
would likely require total replacement. These include screens, pumps, mechanical scrapers of the clarifiers,
rotary distribution arms of the TF system, valves, etc. The same study concluded however that the concrete
structures of the facility are still in good condition and thus could be utilized if the plant is to be rehabilitated.
In addition to condition assessment, one time flow measurement was likewise conducted by the committee to
establish the current flows in the UPLB sewer system. Based on the flow measurements conducted on 16
March 2012 from the sewer main along Victoria Ela Road that discharges wastewater to Molawin Creek
directly and from the inlet works of the STP, the current wastewater generation of UPLB is 3.1 MLD. The flow
along in the Victoria Ela Road sewer main was found to be 0.68 MLD and through the inlet works and by-pass
of the STP was 0.87 MLD. Since the STP as per design can treat an average flow of 1.5 MLD and up to a peak
flow of 3.78 MLD, the STP has therefore the capacity to treat UPLB’s current flows.
Following the findings of the committee, this project aims to rehabilitate the UPLB STP in order to treat the
university’s wastewater to DENR DAO 2016-08 standard for Class C water, the classification of Molawin Creek.
1 PROCUREMENT OBJECTIVES
This project is for the complete Design of the rehabilitation of UPLB STP. It is the intent of the contract package
that all works be apposite to and considers all the requirements of UPLB in terms of site investigation and data
gathering, design and engineering, testing and commissioning, project documentation, turnover, technical and
operational support and functional guarantee and warranty.
2 SCOPE OF WORKS
The works shall include but not limited to the following:
a. Design for the Rehabilitation of the UPLB STP which shall treat the university’s current wastewater to
DENR DAO 2016-08 effluent standards for Class C waters.
b. Conduct of pertinent site surveys and investigation of the existing STP facility and analysis of the
original 1967 design and construction drawings of the STP to determine the extent of design
intervention needed to rehabilitate the facility.
c. Design all mechanical, hydraulic, electrical and instrumentation equipment and accessories for the
inlet works, pump station and the control building, primary and secondary clarifiers, treatment
system and including pipes and valves.
d. Design new chlorine disinfection system.
e. Design suitable means of metering, displaying and recording the amount of influent and effluent
water conveyed to the STP and discharged from the STP and for obtaining flow composite samples of
both the influent and effluent.
f. Design PLC system for control and monitoring of all drives that are essential to ensure the ongoing
achievement of the treated sewage quality from the whole works.
g. Design the refurbishment of the existing STP control building including all associated architectural,
civil, electrical and mechanical works. These include replacement and rehabilitation of windows,
doors, cabinets, countertop (for wastewater sample preparation) and toilet and bath.
h. Design all associated civil and electrical works including site development, clearing of the STP site,
installation of security fencing and gates, perimeter lighting, site utilities including water supply,
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sewerage and drainage systems and facilities for all the works. The design works shall also include
connection to public utilities outside of the STP site boundary where necessary.
i. Design all required site utilities both temporary and permanent including power, water, sewerage and
communications.
j. Design of site wide Fire Protection, Lightning Protection, and Alarm System.
k. All other design works and services necessary and/or as defined in the contract documents needed to
obtain a complete an efficiently functioning STP facility.
3 PERFORMANCE SPECIFICATIONS
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Table 1 Influent Characteristics
Color PCU 70
pH (range) 6.8-7.3
COD mg/L 395
BOD mg/L 200
TSS mg/L 200
Surfactants (MBAS) mg/L No Value Recorded
Oil/Grease (Petroleum mg/L No Value Recorded
Ether Extract)
Phenolic Substances as mg/L No Value Recorded
Phenols
Total Coliforms* MPN/100mL 1.6E+08
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3.4 STP Facilities
The Design Consultant shall likewise refurbish the raw sewage wet and dry wells and the sludge sump which
include cleaning the sumps, epoxy lining the sumps’ internal surface, provision of new stainless ladder rungs,
and cleaning and/or replacement of the inlet and outlet pipes.
The refurbishment shall include but not limited to replacement of doors, windows, toilet and bath tiling and
fixtures, lighting, floor finish (epoxy coating) plumbing, cabinets, working tables and countertops.
The Design Consultant shall likewise design the refurbishing of the primary clarifiers which include cleaning of
the tanks, epoxy lining the tanks’ internal surface, painting the tanks’ external surface and cleaning and/or
replacement of the inlet and outlet pipes.
3.4.5 Trickling Filters (if TF system is still applicable to conform to DENR DAO 2016-08)
The Design Consultant shall design replacements for the STP’s trickling filter tanks’ mechanical distribution
arms, filter media, under drains and all other appurtenances. All components shall be of the same material
type and quality as the original or accepted equivalent.
The Design Consultant shall likewise design the refurbishing of the trickling filter tanks which include cleaning
of the tanks, epoxy lining the tanks’ internal surface, painting the tanks’ external surface and cleaning and/or
replacement of the inlet and outlet pipes.
The Design Consultant shall likewise design of the refurbishing of the secondary clarifiers which include
cleaning of the tanks, epoxy lining the tanks’ internal surface, painting the tanks’ external surface and cleaning
and/or replacement of the inlet and outlet pipes.
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3.4.7 Disinfection System
The Design Consultant shall design the STP’s new chlorine disinfection system.
3.4.8 Outfall
The Design Consultant shall design the STP’s outfall at a minimum in accordance with original 1967 design.
3.4.9 Digester (if TF system is still applicable to conform to DENR DAO 2016-08)
The Design Consultant shall design the refurbishing of the STP’s digestive chamber which include but not
limited to cleaning of the tank, epoxy lining the tank’s internal surface, painting the tank’s external surface and
cleaning and/or replacement of the inlet and outlet pipes and other piping systems.
3.4.10 Sludge Drying Bed (if TF system is still applicable to conform to DENR DAO 2016-08)
The Design Consultant shall design the refurbishing of the STP’s sludge drying bed which include but not
limited to cleaning of the tank, cleaning and/or replacement of the inlet and outlet pipes and other piping
systems.
a. The STP control shall be designed for an unmanned works with fully automatic operation including
manual override facilities. The electrical control system shall include main and branch circuit breakers,
starters, contactors and reset buttons selector switches, push buttons and pilot lights, circuit control
items for electrical control or liquid level control of the various plant components and all necessary
wiring and conduits. Electrical controls shall be wired so that the various items of plant equipment
can be operated either manually or automatically to achieve the intended sequence of operation. All
electrical controls for all processes shall be at the motor control centers (MCCs)/ local control panels
and located in the control building.
b. Electrical components of mechanical equipment and systems shall be designed as necessary for
complete and operable systems. Interconnecting wiring for factory-wired plant components shall be
designed as an integral part of the STP.
c. The Design Consultant shall provide design for surge protection to prevent damage to electric motors
and all other electrical and electronic components during fluctuation of power voltage, during
resumption of power supply after a power interruption and from the effects of lightning.
d. The STP shall be designed to resume normal operation after a power interruption, even if unmanned,
without causing damage to or undue shortening of the economic life of the electric motors. The
emergency generator shall be provided with automatic transfer system (ATS).
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3.6 Incoming Power Supply and Distribution
a. The electricity supply to the STP is currently cut. New mains incomers to the STP shall be designed by
the Design Consultant.
b. Likewise, the Design Consultant shall provide design of power distribution to all the facilities and
appurtenant structures in the STP.
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3.12 Lighting
a. Lighting shall be designed to provide for sufficient illumination levels.
b. Lighting shall be designed to cover the inside of the control building and external areas including
walkways.
c. Design for external site lighting shall be provided as per original 1967 design and areas where
required for safety or security.
d. Design for emergency lighting shall be provided in the following areas: i) inside the control building, ii)
inside the sewage dry pit and iii) entrance to the STP.
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xxvii. Details of fire fighting, suppression, detection and alarm systems.
b. The Design Consultant shall submit 3 hard copies of drawings and documents, and one copy of
calculations for approval by UPLB. Digital files shall also be provided. The Design Consutant shall
utilize AutoCAD software for the preparation and submission of all drawing submittals.
c. The Design Consultant shall use Excel or approved alternative software for design and modelling of
the STP.
d. All design documents shall be reviewed by UPLB. The Design Consultant shall stagger the submissions,
in order to facilitate a 14 days review period for each set of drawings, documents and calculations.
UPLB shall provide written comments on drawings, calculations or documents submitted by the
Design Consultant..
7 PROJECT DURATION
The Approved Period for the contract is One Hundred Sixty (160) calendar days for the complete Design
8 DETAILED ESTIMATES
a. The Design Consultant shall prepare and submit a cost estimate of the designed system
b. The Design Consultant shall prepare and submit for the purpose of the Bill of Quantities (BOQ) in his
contract a detailed cost estimates in accordance with the limit of the available Approved Budget for
the Contract (ABC)
c. In the preparation of all detailed cost estimates the Design Consultant shall be guided by format
prescribed by UPLB.
d. The labor component of the cost estimates shall follow the ranges provided in the ordinance and the
latest wage order of the Department of Labor and Employment (DOLE) of the Region 4-A.
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e. The Design Consultant shall draw up a unit price analysis for each of the pay item.
9 PROJECT TIMETABLE
1.1 TIME FRAME. The period for the ARCHITECTURAL AND ENGINEERING DESIGN
CONSULTANT’s services is expected to be 160 Calendar Days excluding periods used
during construction.
10 CONSULTANT QUALIFICATION
The A&E DESIGN CONSULTANT shall have demonstrated competence and creativity
to address the design problem for projects of similar complexity, use and character.
The ARCHITECTURAL AND ENGINEERING DESIGN CONSULTANT shall show previous
experience in design of state of the art sewage treatment plant.
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The Bidder shall indicate in his technical proposal, a description of completed and
ongoing projects, citing features and merits of particular projects where the above-
mentioned requirements have been fulfilled.
1.4 The A&E DESIGN CONSULTANT must be operational for at least fifteen (10) years
and shall have proven capacity to complete the project and provide the appropriate
experts and project staffing.
Education:
Minimum: Graduate in Civil Engineering
Experience:
Civil/Structural Specialist
Total experience – 5 years
Registered Civil Engineer
Education:
Minimum: Graduate in Electrical Engineering
Electrical Specialist Experience:
Total experience – 5 years
Registered Professional Electrical Engineer
Education:
Minimum: Graduate in Mechanical Engineering
Mechanical Specialist
Experience:
Total experience – 5 years
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Team Members Education Qualification and Experience
Registered Mechanical Engineer
Education:
Minimum: Graduate in Electronics and Communications
Engineering or Electronics Engineer or Communications
Automation Specialist Engineer
Experience:
Total experience – 5 years
Registered ECE, Electronics Engr. or Communications Engr.
The A&E DESIGN CONSULTANT may assign tasks of Project Key Personnel to
professionals outside of his firm or organization provided that the necessary
documents to support the agreement between the ARCHITECTURAL AND
ENGINEERING DESIGN CONSULTANT and Key Personnel are submitted with the Bid.
The A&E DESIGN CONSULTANT may assign other support personnel in addition to
those listed below, for the optimal performance of all DETAILED ARCHITECTURAL AND
ENGINEERING DESIGN Services at no additional cost to UPLB.
The A&E DESIGN CONSULTANT shall provide the Curriculum Vitae (CVs) (Annex “A”)
of their KEY AND SUPPORT personnel staff clearly showing the relevant skills, work
experience, trainings and professional certifications issued by the respective
organization/association. The CVs must be accompanied with certified true copy of
the following:
12 SCOPE OF SERVICES
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c) ELECTRICAL PLANS
d) ELECTRONICS AND COMMUNICATIONS
e) SANITARY AND PLUMBING PLANS
f) MECHANICAL PLANS
g) FURNITURE, FURNISHING AND EQUIPMENT PLANS
h) OUTLINE SPECIFICATIONS
i) TECHNICAL SPECIFICATIONS
j) BILL OF QUANTITIES AND DETAILED UNIT PRICE ANALYSIS
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Description and illustration of the Master Development Plan for
the project integrating all space requirements, immediate and
future developments, and adjacent and ancillary services; and
Recommended options and strategies for architectural and
engineering development.
The Consultant shall ensure that all Final Contract Documents are
coordinated across all design disciplines and outputs.
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The CONSULTANT’s work includes assistance and advice to the University
Planning and Maintenance Office (UPMO) in the preparation of Bid
Documents during this phase.
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13 PROJECT DOCUMENTATION
The following are the submissions and output requirements of the Project:
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Stage Submission Review and Outputs Format Payment
Schedule Approval Schedule
receipt of electronic file in
approved PDF.
schematic
plans and
designs
Presentation of the Visual Presentation
Design in PowerPoint and
Development Plans Poster Boards
formats
Final Report Max 45 CD Max 14 CD after Presentation of the Visual Presentation 30%
and Final after receipt of contract Final Report and in PowerPoint and
Contract receipt of the documents Final Contract Poster Boards
Documents approved Documents formats
Submission design
development
report
Architectural First submission
Programming and (for review and
Conceptual approval: 3 copies
Framework Plan of bound A3 size
Final Report report CD
containing an
electronic file in
PDF)
Second submission
(as approved by
UPLB): 3 copies of
bound A3 size
report CD
containing an
electronic file in
PDF.
Architectural and 7 copies of A1 size
Engineering Blueprints with 1
construction plans set of Tracing
and detailed Paper (thick) prints
drawings and electronic files
of CAD drawings
Technical 5 copies Bound
Specifications A4size report,
electronic file in
Word format and
PDF.
Bill of Materials 5 copies Bound
and Cost Estimates A4size report,
electronic file in
excel format and
PDF.
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Stage Submission Review and Outputs Format Payment
Schedule Approval Schedule
Blank Forms for 1 copy of bound
Proposal of A4 size report
Bidders/Contractor
s
TOTAL number 120 CD 40 CD 160 CD Total=
of CD 90% +
(10%
retention
fee to be
paid after
the
constructi
on is
completed
) = 100%
1.5 Oral/ visual presentation meetings shall be scheduled with the Client at least 2-3
days after the submission of the report to be presented.
1.6 Succeeding revisions in schemes and design development plans including revised
cost estimates, resulting from consultations with the Client, should be submitted in
bound A3 size compilations, but need not contain full report contents, to be
attached in the original report as “ANNEXES.”
UPLB shall designate personnel responsible for plan review and approval. All plans
submitted shall use the UPLB-recommended title blocks, with the following
signatories;
(a) the appointed End-user representative
(b) the UPMO Director
(c) the OVCPD Vice Chancellor
(d) the UPLB Chancellor
Prior to progressing to succeeding stages of design, a final copy of the plans should be
submitted for signature of the above University personnel.
1.6.1
15 CONFIDENTIALITY OF DATA
The ownership of all designs, drawings, specifications and copies thereof including electronic
files, prepared and furnished by the CONSULTANT in the performance of the services subject
of this Agreement shall be vested with the UPLB.
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The ARCHITECTURAL AND ENGINEERING DESIGN CONSULTANT warrants that
it shall conform strictly with the terms and conditions of these Terms of
Conditions.
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The Terms of Reference for the Consulting Services for the
Detailed Architectural and Engineering Design (DAED) of the
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proposed Rehabilitation of UPLB Sewage Treatment Plant is
approved.
ANNEX A:
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