SP2602- Olympic Well Field Restoration and Arcadia Water Treatment Plant Expansion Project City of Santa Monica /Walsh Construction Company II, LLC GMP Amendment Exhibit 6
Performance Parameters
Exhibit 6 1/19
1 EXHIBIT 6
ARCADIA WATER TREATMENT PLANT TESTING AND
PERFORMANCE REQUIREMENTS
1 PURPOSE
The purpose of this document is to outline required start-up and commissioning plans, functional tests (pre-commissioning testing), acceptance tests, and system performance guarantees for the expanded Arcadia Water Treatment Plant (WTP). Testing requirements are specific to the following new and modified unit processes:
1. Ultraviolet Advanced Oxidation Process (UV-AOP)
2. Granular Activated Carbon (GAC) system
3. Flow Reversal Reverse Osmosis (RO)
4. Decarbonation Tower (or Air Stripping Tower)
The Design/Builder shall demonstrate that the Olympic Well Field Restoration and Arcadia Water Treatment Plant Expansion Project (Project) meets all Guaranteed Plant Performance Parameters (Section 6, below), which constitutes a performance guarantee. This document generally sets forth the requirements for Start-up and Commissioning, Acceptance Testing, and Performance Guarantees of the Project required under the Contract Documents. This document is intended to supplement the project technical specification requirements but take precedence over technical specification sections.
2 REGULATORY APPROVALS
The Design/Builder shall meet all applicable requirements set forth by Governmental Agencies, having jurisdiction over the Project as they relate to any testing and acceptance procedures and reporting protocols for the Arcadia WTP. Design/Builder shall obtain the following approvals:
• State Water Resources Control Board (SWRCB), Division of Drinking Water (DDW) − Drinking Water Permit Amendment
− 97-005 Policy Memo/permit, including but not limited to the following documents to be submitted to DDW:
• Step 4: Effective Treatment and Monitoring Report
• Step 5: Human Health Risks Associated with Failure of Proposed Treatment Report • Final Engineering Report that addresses the design, multi-barrier treatment approach, and treatment goals.
• An Operations and Maintenance Manual for the new treatment facilities • A Water Quality Monitoring Plan
• Acceptance Test Plan and Final Acceptance Test Report(s) to demonstrate the performance of the new treatment processes.
• These reports shall be provided in both PDF and MS Word formats. • South Coast Air Quality Management District (SCAQMD)
− Vapor-Phase GAC system permit amendments, if applicable • City of Los Angeles Fire Department approvals
• City of Santa Monica Building Permits
Exhibit 6 2/19
2 3 START-UP AND COMMISSIONING PLAN
The Design/Builder shall submit a Start-Up and Commissioning Plan for approval by the City no later than six (6) months prior to starting Commissioning activities. The Design/Builder shall not start Commissioning activities without an approved Start-Up and Commissioning Plan. Refer to Specifications Section 01 45 20 for additional requirements.
The above referenced plans (collectively, “Plans”) shall conform to the requirements of the Project Criteria, comply with the requirements outlined in this exhibit, and address the activities and Guaranteed Plant Performance Parameters for the Project and all equipment required to achieve the Project Criteria. For purposes herein, “Project Criteria” means: 1) restore the Olympic Sub-basin by pumping and treating the contaminated groundwater through a new advanced water treatment facility (approximately 2,000 gallons per minute of treatment capacity), 2) increase the treatment efficiency at the Arcadia Water Treatment Plant to 90 percent or greater and reduce waste discharge, 3) continue to provide City customers with a high-quality and safe drinking water supply, and 4) maximize local water supplies to reduce reliance on imported water supplies.
The Start-up and Commissioning Plan shall include, but not be limited to, the following:
i. Schedule for mechanical and electrical completion, testing, and commissioning of equipment or system(s) applicable to the Project.
ii. Scoped and approved piping and instrumentation diagrams (“P&IDs”) identifying the limits of testing for each system and identifying all equipment, piping, instrumentation, and controls for each system.
iii. Scoped and approved Single Line Diagrams showing the limits of testing and components of the electrical distribution system that will be required to be operational and active during the testing of the system components. iv. Approved point-to-point and loop drawings.
v. Procedure/practice identifying the Design/Builder's plan for isolation of equipment prior, during, and after testing to assure the safety of the equipment, Design/Builder's personnel and its subcontractors, manufacturer's personnel, City employees, and others present. Procedure shall address as a minimum lockout/tagout and method of identifying status of equipment (construction, mechanically complete, in testing, energized/de-energized, etc.). vi. Roles and responsibilities of the Design-Build Start-up Manager; Design/Builder's testing, check-out, calibration, and other start-up personnel; Design/Builder’s applicable Subcontractors; City Inspection, Operations and SCADA personnel; and Process Equipment Vendor personnel.
vii. The Design/Builder shall provide and use forms for each stage of testing that include all test information for equipment and systems, including specified operational parameters. This includes providing forms for pressure or leakagetesting and preoperational check-out for all equipment. viii. Test procedure for equipment and systems.
a. Test procedures shall be prepared for each equipment and system installed by the Design/Builder.
b. The procedures shall be submitted at a minimum forty-five (45) days before testing activities begin.
c. The procedures shall be approved by City no less than fourteen (14) days before testing activities begin.
Exhibit 6 3/19
3 d. The procedures shall include all test information to be collected, including specified operational parameters, during testing.
ix. Calibration procedures.
x. Sample calibration sheet for all types of instruments consistent with specifications. xi. Hydrotest test record form.
xii. Electrical and Control sheets in accordance with specifications. xiii. Mechanical and electrical completion sign-off forms for each type of equipment installed by the Design/Builder on this contract.
xiv. Start-up and Commissioning schedules; both to be included in the Construction Schedule (Exhibit “3” to the GMP Amendment).
3.1 START-UP AND COMMISSIONING
Refer to Specifications Section 01 45 20 for specific start-up and commissioning requirements.
In general, start-up and commissioning activities shall consist of the following:
i. Pressure and/or leakage tests.
ii. Electrical testing as specified in Division 26.
iii. Wiring and piping, individual component, loop, loop commissioning and tuning testing as described in Division 40.
iv. Pre-operational checkout for all mechanical and HVAC equipment. Pre-operational check-out procedures shall be reviewed and approved by the respective equipment manufacturers.
v. Initial operation tests of all mechanical, electrical, HVAC, and instrumentation equipment and systems to demonstrate compliance with the performance requirements of this project manual.
3.2 PRE-COMMISSIONING AND FUNCTIONAL TESTING
3.2.1 General
i. The primary activities for pre-commissioning and functional testing are construction, factory testing, component testing, stand-alone equipment testing, and documentation. The intent is to test isolated equipment and components for mechanical and electrical functionality prior to the introduction of process fluids. ii. Once all components in a system have been tested individually and all required deliverables have been approved for that system, the Design/Builder may proceed to Functional Testing (Specifications Section 01 45 20) of that system.
3.2.2 Pre-commissioning Testing Requirements
i. The Design/Builder shall verify installation in compliance with the Project Specifications and the manufacturer’s installation instructions. ii. The Design/Builder shall perform required alignment, adjustment, lubrication, and all other steps required, for each item of equipment and systems furnished by the Design/Builder in accordance with the manufacturer’s instructions, the equipment section, and sections referenced within the equipment section. iii. System Pressure and/or Leakage Tests in accordance with Project Specifications iv. Electrical and controls testing shall be successfully completed in accordance with Project Specifications.
Exhibit 6 4/19
4 v. The Design/Builder shall provide mechanical and electrical completion sign-off forms for each item of equipment (as required) and systems installed by the Design/Builder. The forms will be used in the field by the Design/Builder and the City jointly, to verify that all steps required for mechanical and electrical completion have been performed. The Design/Builder shall not begin pre-operational checkout of equipment or systems until the Design/Builder’s Design Professional (Brown and Caldwell) has reviewed and signed the mechanical and electrical completion sign-off forms for the equipment or system.
vi. Installation and mechanical and electrical completion deficiency items shall be resolved to the satisfaction of the Design/Builder’s Design Professional before preoperational check-out procedures are performed. A detailed list of corrective actions taken will be maintained by Design/Builder.
vii. Pre-operation check-out shall be performed by the Design/Builder in a logical, stepwise sequence to ensure that all equipment has been properly serviced, aligned, connected, and adjusted prior to operation.
viii. Pre-operation checkout procedures conducted by Design/Builder shall include, but not necessarily be limited to, the following:
a. Ring-out of all power, control, and monitoring and control circuits prior to connection.
b. Insulation resistance testing of all electrical equipment and cable. c. Voltage check of all circuits.
d. Phase sequence check.
e. Pre-Connection alignment check of all connecting pipelines and machines. f. Complete check-out, through simulated operating conditions, of all safety circuits and control interlocks.
g. Alignment of all motor and equipment shafts.
h. Manual rotation and/or movement of all moving parts to ensure freedom of movement.
i. Bump motor to confirm correct direction of rotation. Any anti-rotation device shall be removed prior to bumping motor.
j. Operation of motorized valves through complete open/close cycle with motor. k. Confirmation that all valves are correctly orientated and in their correct operating mode.
l. All equipment and installation meet all Cal/OSHA requirements including, but not limited to, Process Safety Management.
ix. Calibration
a. Before conducting the tests specified herein, the Design/Builder shall furnish the services of technicians knowledgeable of the process instrumentation, all special tools, calibration equipment, and labor to calibrate and test all Design/Builder-furnished process instruments and the control system. All test equipment shall be calibrated to a NIST Standard within 90 days of test. b. All instruments, meters, flow control devices, and transmitters shall be calibrated to within manufacturer’s specifications of accuracy. All status and alarm switches, transmitters, and indicators shall also be tested.
Exhibit 6 5/19
5 c. During the tests, if one or more instrument readings are not within the specified calibration requirements, or the control system does not function as specified, adjustments or alterations shall be made by the Design/Builder as necessary to meet the intent of the specifications and the completion tests shall be repeated.
x. Testing of Equipment
a. Once all affected equipment has been subjected to the required preoperational check-out and calibration procedures, individual equipment and systems shall be started, operated, and tested by the Design/Builder to determine whether the equipment and systems meet the requirements of the approved equipment operation procedures and specification requirements, including the entire operational range specified and required as a part of the Project Criteria (if operational range is available from the City). The equipment shall be operated by the Design/Builder for the period of time as defined in the approved procedures. Local control panel operation shall be confirmed during the associated equipment operational tests.
b. Once tests have been satisfactorily completed, all Design/Builder-furnished equipment shall be rechecked by the Design/Builder for proper alignment, loose connections, unusual movement, or other indications of improper operating characteristics. Any deficiencies shall be corrected to the complete satisfaction of the Design/Builder’s Design Professional. c. In the event that any item of installed equipment exhibits operating characteristics outside of the manufacturer’s or the Design/Builder’s technical specifications, it shall be disassembled, inspected, repaired, or removed from the site and replaced at no cost to the City, by the Design/Builder.
3.2.3 Pre-Commissioning Reports
Pre-Commissioning Testing includes completion and submittal of the following:
i. All Factory Demonstration Test (FDT) Reports
ii. All Pressure Test Reports
iii. All Structures Leak Test Reports
iv. All Mechanical Alignment Reports
v. All Equipment Tested as Stand-Alone in Local / Manual Mode vi. All Loop Test Reports
vii. All Conductivity and Megger Test Reports
viii. All Instrumentation Calibration Reports
ix. All Manufacturer's Certificates of Proper Installation (COPI) x. All Electrical Breaker Setting and Equip Check Out Reports xi. All PLC / HMI Programming Bench Tested
xii. Draft Operator Training Plan Submitted
xiii. Draft Standard Operating Procedures Submitted
xiv. Draft O&M Manuals Submitted
xv. Pre-Commissioning Report including CAR (Corrective Action Report) Exhibit 6 6/19
6 3.3 COMMISSIONING TESTING REQUIREMENTS
3.3.1 GENERAL REQUIREMENTS
The following general requirements apply:
i. The Design/Builder shall be responsible for the performance of all Design/Builderfurnished equipment in accordance with the Project Specifications. ii. The Design/Builder shall bear the cost of retesting work which fails to meet Guaranteed Plant Performance Parameters.
3.3.2 NOTICE OF COMMENCEMENT OF THE COMMISSIONING TESTS The Design/Builder shall provide the City with at least fourteen (14) days prior written notice of the expected initiation of the Commissioning Tests. At least ten (10) days prior to the actual commencement of Acceptance Testing, the Design/Builder shall certify in writing that it is ready to begin Acceptance Testing in accordance with the Acceptance Test Plan and the Design Build Contract.
3.3.3 FUNCTIONAL TESTING REQUIREMENTS
The objective of the functional testing is to operate (Design/Builder with City Operations assistance) all WTP equipment to assess if the WTP equipment functions as stated in the control strategies. The process and mechanical equipment shall function without leaks, breakdowns, or failures for five (5) days straight. Process equipment and analyzers shall be inspected for calibration before the 5-day test.
The remaining PLC interlocks, control loops and alarms shall be checked before beginning the 5-day test. The 5-day test shall not start until all process equipment is installed and ready to test. Vendor system suppliers, manufacturers, and system integrators shall provide operational training prior to or during functional testing for Design/Builder and City staff.
3.3.4 FUNCTIONAL TESTING REPORT & CORRECTIONS
After completion of the 5-day test, the Design/Builder’s Design Professional shall be provided the list of alarms, any mechanical or electrical failures and corresponding downtimes. Any system integration activities necessary to rectify those failures should be incorporated prior to the Acceptance Test.
3.3.5 CONDITIONS TO COMMENCEMENT OF THE ACCEPTANCE TESTS The Design/Builder shall not commence the Acceptance Tests until the following events have occurred:
i. The requirements of Pre-Commissioning and Functional Testing have been met and the City has approved the Acceptance Test plan
ii. DDW has approved the Acceptance Test Plan proposed by the Design/Builder iii. The Design/Builder has submitted its personnel training program required by the Design Build Contract
iv. The Design/Builder has certified that it has completed the Pre-Commissioning and Functional Testing requirements
v. The Design/Builder shall have completed all startup and commissioning required by the Design Build Contract, including testing of equipment, subsystems, and structures required by the Design Build Contract and the Design Requirements Exhibit 6 7/19
7 vi. The Design/Builder shall have devised a method acceptable to the City and applicable Governmental and Regulatory Bodies, and complying with Applicable Law for:
a. Determining that effluent water quality is in compliance with all Applicable Laws; and
b. Disposing or retreating any water which is not in compliance with all Applicable Laws.
4 RO MEMBRANE BENEFICIAL OCCUPANCY
Upon completion of functional testing, and prior to acceptance testing per an approved Acceptance Test Plan, the Design/Builder shall operate the RO system in conventional RO mode (flow reversal mode disabled) at the current RO system recovery (82-83% recovery) to demonstrate that the new RO membranes are operating under applicable membrane warranty conditions and meeting all applicable performance requirements per Project specifications. The timing of when the new RO membranes are installed and duration that it would be operated under the current RO system recovery (82-83% recovery) in relation to when the Acceptance Testing will begin is the sole responsibility of the Design/Builder. The following data and activities shall be collected and undertaken during the Beneficial Occupancy demonstration:
i. Raw water silt density index (SDI) testing
ii. Baseline normalization calculations
iii. Comparison of performance data to membrane projection models iv. Conduct conductivity profile to confirm the membrane elements are performing per specifications
v. Determine system compliance with membrane warranty parameters:
a. Feedwater water quality
b. Feedwater SDI
c. Feed pressure
d. Interstage differential pressures
The Design/Builder shall troubleshoot the RO system (evaluate upstream feedwater quality issues, perform membrane pressure vessel conductivity profiles, check system controls, adjust operational setpoints, etc.) and repeat system tests if the membrane system fails to meet performance requirements. Upon successful completion of Beneficial Occupancy demonstration testing, the Design/Builder shall submit all testing data, which demonstrates RO membrane system performance compliance, and the membrane warranty period shall begin. 5 ACCEPTANCE TEST PLAN
The Design/Builder shall submit an Acceptance Test Plan for approval by the City, and to serve as part of the DDW permitting process, no later than six (6) months prior to commissioning activities. The City shall have fifteen (15) days to review and approve the Design/Builder’s Acceptance Test Plan or return with comments, which will be responded to by the Design/Builder within ten (10) days. The Design/Builder shall not submit the final Acceptance Test Plan to DDW until it has been reviewed and approved by the City.
Exhibit 6 8/19
8 The Design/Builder shall prepare and submit to the City and DDW for its review and approval an Acceptance Test Plan that includes the following minimum requirements:
i. UV/AOP performance test protocol, including spiking of 1,4 Dioxane and other constituents to demonstrate performance to the City and DDW. Refer to Specification Section 46 63 23 for validation testing requirements. ii. GAC system performance (backwash/bumping functionality, flow splitting, peroxide quenching, clean bed headloss, and EBCT compliance).
iii. RO performance test protocol, including:
a. Raw water silt density index (SDI) testing
b. Conductivity profile testing
c. Baseline normalization calculations
d. System compliance with membrane warranty parameters (feedwater water quality, SDI, etc.)
iv. Operations, Maintenance and Monitoring Plan (OMMP), as submitted to the City and DDW.
v. Procedures for testing all new water treatment processes and ancillary support systems.
vi. Procedures for testing standby power.
vii. Use of permanent and temporary instrumentation.
viii. Organization of the test team, including responsibilities, authority, and decisionmaking protocols. ix. Response procedures for unsuccessful test results including definition of threshold results that constitute overall Acceptance Test failure. x. Operating and maintenance schedule during testing.
xi. Procedures for UV/AOP off-spec water disposal and system protections. xii. Procedures for RO system off-spec water disposal and system protections. xiii. Internal and external communications protocols.
xiv. Acceptance Testing schedule.
xv. Procedures for demonstrating compliance with every Acceptance Test Standard. xvi. Response or mitigation procedures in the event of an unsuccessful test event.
The Acceptance Test Plan shall describe methods for demonstrating compliance with Guaranteed Plant Performance Parameters, including:
i. A list of all WTP influent water, inter-process (i.e. UV-AOP effluent, GAC effluent, RO Feed, RO permeate), and effluent water quality, performance parameters to be monitored and a schedule of monitoring. The monitoring description will include sampling locations, analytical methods and sampling frequencies at which water quality and parameters will be monitored on a continuous or other defined basis.
Final sampling and performance requirements shall be approved by DDW. All water quality and performance parameters shall be sampled for and measured daily during the Initial 7-day DDW Acceptance test and at regular sampling intervals, per permitting requirements, during the 30-Day testing. Sampling for 1,4- dioxane should be across the entire water treatment train or as required by DDW. ii. Procedures for spiking contaminants (e.g., 1,4-Dioxane, TCE, and PCE) to test UV AOP system per Specification Section 46 63 23.
Exhibit 6 9/19
9 iii. Identification of equipment calibrations to be performed, descriptions of all calibration techniques to be used and timing of calibrations relative to Acceptance Testing (all instruments, including benchtop units, used in Acceptance Testing operations and to monitor and evaluate Acceptance Testing shall be calibrated in accordance with manufacturer’s requirements.), QA/QC procedures, including those to be utilized for all equipment used for testing and measuring different parameters within the treatment process and at contract laboratories. iv. Identification of QA/QC procedures, including, trip blanks and duplicates for samples sent to contract laboratories. The description shall address intermediate spot and cross checks, in addition to the formal calibration periods. v. A full description of any analytical methods and techniques that will be utilized to verify compliance with all Applicable Laws and Guaranteed Plant Performance Parameters. In addition, descriptions of how data collected will be compared with Guaranteed Plant Performance Parameters shall be provided and shall be in a manner that complies with City requirements and regulatory requirements including applicable data handling requirements of the DDW. Provide examples of any tools such as flow charts, check sheets or any other data presentation and evaluation techniques that will be utilized.
vi. Compliance with all laboratory water quality testing and analysis. vii. A listing of all samples requested by the City and a protocol for delivering samples to the City for the City’s own testing program should the City elect to have such a program during Acceptance Testing.
viii. For RO membrane separation process, a description of membrane normalization calculations to verify performance stability.
ix. A list of critical control points for the UV-AOP process to demonstrate required log removal credit and treatment performance.
x. A full description of any analytical methods and techniques that will be used to verify compliance. In addition, descriptions of how data collected will be compared with performance parameters shall be provided and shall be in a manner that complies with City requirements and regulatory requirements including applicable data handling requirements of DDW.
xi. Supervisory Control and Data Acquisition (SCADA) system monitoring and control functions.
xii. A list of real-time data fields that will be provided to the City during Acceptance Testing.
The Acceptance Test Plan shall also specify the form and contents of the Acceptance Test Report and include specific, detailed sampling protocols to be used while conducting the Acceptance Tests. Preliminary tests may be conducted at the Design/Builder’s expense; however, the results of such tests shall not be made part of the Acceptance Test Report.
The Acceptance Test Plan shall describe the Design/Builder’s approach and details for meeting the requirements of this document.
The Acceptance Test Plan shall document how Acceptance Testing will demonstrate the ability of the Arcadia WTP to treat the design range of flow, temperature, and influent water quality.
Draft Standard Operating Procedures (SOP) shall be submitted prior to, or in conjunction with, the submittal of the Acceptance test plan for use during testing activities. Final SOPs shall be submitted to the City after Substantial Completion but prior to Final Completion.
Exhibit 6 10/19
10 5.1 ACCEPTANCE TESTING
Refer to Specifications Section 01 45 20 for specific acceptance test requirements, which will consist of the following:
i. Initial 7-days DDW Acceptance - The Initial 7-days DDW Acceptance Test shall have a minimum duration of seven (7) consecutive days and shall demonstrate that all water treatment plant operations over the Initial 7-days DDW Acceptance Test period are in full and continuous compliance with the Guaranteed Plant Performance Parameters. It is expected that during the Initial 7-days DDW Acceptance test, the final treated water will NOT be sent into the potable water distribution system and will be disposed of to either the sanitary sewer system or storm drain unless directed otherwise by DDW. The Design/Builder shall be responsible for providing all necessary temporary measures required to discharge the final treated water to either the sanitary sewer system or storm drain, or as directed by DDW. The operational testing period shall be for a period of seven (7) consecutive days at a minimum of half plant capacity (i.e., only two RO trains in operation) for the first two days and full plant capacity thereafter with a plan to alternate RO train operation, as needed, to test all RO trains and the UV-AOP system).
a. Design/Builder may reduce the duration of the Initial 7-days DDW Acceptance test, if allowed by DDW, to reduce the volume of water discharged to the sewer.
b. If the Initial 7-Days DDW Acceptance test is suspended for a period of more than eight (8) hours, and if a DDW approval has not been achieved, the “continuous compliance” requirement shall not be satisfied, and the Initial 7- days DDW Acceptance test shall be restarted at Day 1 and re-run for the entire 7-day test period.
c. Loss of power at the Arcadia WTP does not constitute a requirement to repeat Initial 7-days DDW Acceptance test. In such event, the testing duration would be paused during the loss of power event and resume once power is restored. d. Stoppage of testing by the City to address issues unrelated to the Project performance will constitute a pause in testing but not constitute a requirement to repeat Initial 7-days DDW Acceptance test.
e. City will provide certified operators to operate new treatment facilities, including UV-AOP, RO System, Decarbonator, GAC and the Booster Pump Station under the direction of Design Builder. The Design/Builder will provide operation direction to the City Operators after the loading of new RO system membranes.
Once Substantial Completion is reached the City will be responsible for all operations of the facility. Initial acceptance test is complete once DDW has approved water quality test results and issues either an amended drinking water permit or temporary permit to discharge water into the distribution system.
f. Upon completion of the Initial 7-days DDW Acceptance test and approval granted by DDW, the Final 30-days Continuous Operation Acceptance period shall commence.
ii. Final 30-days Continuous Operation Acceptance - Upon completion of the Initial 7- days DDW Acceptance test and approval has been granted by DDW to commence Final 30-days Continuous Operations, the City will provide certified operators to Exhibit 6 11/19
11 operate the Arcadia Water Treatment Plant with direction from the Design/Builder at full plant capacity (i.e., all RO trains operating) for an additional 30 days. It is expected that during the Final 30-days Continuous Operation Acceptance test period, the treated water will be sent into the drinking water distribution system unless directed otherwise by DDW. The primary objective of the Final 30-day Continuous Operation Acceptance period is to verify performance of the treatment system and to transition operational direction from the Design/Builder to the Owner.
5.2 SUPPLEMENTAL TESTING
In addition to Acceptance Testing, supplemental testing is to be conducted. i. Supplemental 30-days Continuous Operation - Upon completion of the Final 30- days Continuous Operation Acceptance testing period, testing is to be continued for 30 additional days. The primary objective of the Supplemental 30-days Continuous Operation period is to verify performance of the treatment of the RO systems for a total of 60 days. If the RO system is unable to operate for a minimum of 60-days without a clean-in-place (CIP), Design/Builder shall evaluate operational data and make a recommendation on operational adjustments and repeat both the Final 30-days Continuous Operation Acceptance and Supplemental 30-day Continuous Operation test periods for the RO system. Any remedy or operational adjustments made shall be approved by the City prior to restart of the Final 30- days Continuous Operation Acceptance test. Failure of City operations staff to adhere to, or follow, Design-Build team directions for WTP operations, unexpected plant power failures, or the occurrence of well field upsets that introduce unexpected solids into the WTP, all of which may result in RO system fouling/scaling, shall not be the responsibility of the Design/Builder and shall not result in restarting the Final 30-days Continuous Operation Acceptance and Supplemental 30-day Continuous Operation testing periods.
5.3 ACCEPTANCE TEST REPORT
Within thirty (30) days following the last day of any Acceptance Testing, the Design/Builder shall furnish the City with two (2) copies of a written Acceptance Test report consistent with the requirements specified in this document, by the Design/Builder.
5.3.1 ACCEPTANCE TEST REPORTING REQUIREMENTS
The Acceptance Testing Report shall be prepared in accordance with the Acceptance Test Plan and include at a minimum:
i. Confirmation by the testing lab and Engineer of Record that testing was conducted in accordance with the approved Acceptance TestPlan.
ii. A certification of the results of the testing with respect to each of the Acceptance Test Standards. Each Acceptance Test Standard shall be addressed separately and the basis for the determination presented. This certification of the results of the testing shall include (a) a determination of the extent to which the Project complies with the applicable Contract Standards and requirements and (b) for each Guaranteed Plant Performance Parameter, a determination of the extent to which the Project complies with the Guaranteed Plant Performance Parameters.
iii. All data measured and recorded during the tests including laboratory analyses, chemical consumption, instrument calibrations, pressures, and measurements.
Exhibit 6 12/19
12 iv. A certification of the results of the testing with respect to the log removal value for 1,4-dioxane, TCE and PCE by the UV/AOP process.
v. Certification of RO recovery performance and Arcadia WTP final potable water quality. vi. Record of equipment outages, failures, and preventative maintenance. vii. Summary of test results and conclusive evidence of compliance with all test requirements.
viii. All calculations used in determining test results. ix. Any other data reasonably requested by the City to be included in such reports. x. All certifications shall be signed and sealed by an Engineer in responsible charge of the design employed by theDesign/Builder.
5.3.2 ACCEPTANCE TEST STANDARDS
The ability of the Project to meet the following Acceptance Test Standards shall be demonstrated during Acceptance Testing:
i. The Project operated properly with only the normal complement of employees included in the staffing related to collection and analysis of samples and other test data.
ii. The Project can deliver Arcadia WTP treated water per the Guaranteed Plant Performance Parameters. For Guaranteed Plant Performance Parameters, the averaging period for the purposes of Acceptance Testing shall be the length of the Acceptance Test. The results of all samples taken during an Acceptance Test shall be reported and included in the calculation of reported averages or other evaluations applicable to determining compliance with Guaranteed Plant Performance Parameters.
iii. The Project is compliant with all applicable Governmental Approvals at all times. iv. The Project operations are consistent with the Project Criteria. v. The Project operates with automated and computerized systems in full and continuous operation.
5.3.3 FAILURE OF THE ACCEPTANCE TEST
Failure to continuously demonstrate the Acceptance Test Standards during the period of the Acceptance Test as defined in Sections 5.1 shall constitute a failure of the Acceptance Test.
Any failure of an Acceptance Test shall require (a) correction of those components or conditions that resulted in the failure, and (b) performance of a retest of the Acceptance Test after proper notification is provided to the City. Any failure to meet an Acceptance Test Standard during the Initial 7-days DDW Acceptance or Final 30-days Continuous Operations testing periods shall require a repeat of the Initial 7-days DDW Acceptance or Final 30-days Continuous Operations Acceptance testing periods. Corrective actions and/or remedies to the failure shall be approved by the City prior to repeating the Initial 7-days DDW Acceptance or Final 30-days Continuous Operations Acceptance testing periods.
5.3.4 ACCEPTANCE TEST COMPLETION
Completion of the Acceptance Test shall be defined as completion of Acceptance Testing followed by submission by the Design/Builder and acceptance by the City of an Acceptance Test report demonstrating compliance with all acceptance test standards.
Exhibit 6 13/19
13 6 GUARANTEED PLANT PERFORMANCE PARAMETERS
The expansion of the Arcadia WTP includes the retrofit of existing RO trains with flow reversal technology and the incorporation of an UV-AOP system for the treatment of contaminants from the Olympic wells. The following sections summarize performance requirements for these two processes during acceptance testing.
6.1 UV-AOP SYSTEM PERFORMANCE GUARANTEE
The UV-AOP System includes a UV reactor(s) and hydrogen peroxide chemical feed system in addition to downstream GAC for hydrogen peroxide quenching. The proposed TrojanUVFlex UV-AOP System will treat Olympic wellfield water for 1,4-dioxane (primary treatment requirement) per the UV-AOP performance requirements, summarized in Table 1, in addition to other VOCs listed in Table 2. Not all constituents will be reduced by the oxidation process.
Table 1. UV-AOP System Performance Criteria
Parameter Unit Value
Design feed water 1,4-dioxane concentration µg/L 54
Design treated water 1,4-dioxane concentration µg/L 0.2 Design 1,4-dioxane removal N/A ≥2.4 log
Design feed water TCE concentration µg/L 34
Design treated water TCE concentration µg/L 0.2
Design TCE removal N/A ≥2.2 log
Design feed water PCE concentration µg/L 42
Design treated water PCE concentration µg/L 0.2
Design PCE removal N/A ≥2.3 log
Total flow 2,000 gpm
UVT ≥96%
UV system power (kW) 329
Hydrogen peroxide dose ≤40 mg/L
Sampling and testing of the raw water for the constituents and parameters listed in Table 1 will be accomplished at the frequencies and times required by DDW. Should the initial laboratory test results indicate any deviation from either the treatment or raw water quality objectives specified herein, the effluent and raw water will be retested to confirm the anomalies before any remedial actions are undertaken.
If water quality operating conditions fall outside of the parameters noted in Table 2, the Design/Builder shall take such steps as may be necessary to ensure that the 1,4-dioxane levels are below the applicable regulatory levels. Refer to Table 2 for UV-AOP baseline water quality parameters.
6.1.1 BASELINE WATER QUALITY PARAMETERS
Table 2 summarizes raw water quality in the Olympic source from the 97-005 Permit Step 2 report and the treatment objectives for inorganic contaminants. Given the variable nature of Exhibit 6 14/19
14 source water quality, this data should be considered indicative of feed water quality to the process and that final treated water quality will meet all applicable drinking water standards after the entire treatment process.
Table 2. Olympic Well Water Quality – Step 2 Report
Constituent [Units]
MCL
or
NL
Using UCL95a
Using Production Well
Concentration From 2020b
Olympic Influent
Concentrations
Estimates
With Safety
Factor
Appliedc
Olympic Influent
Concentrations
Estimates
With Safety
Factor
Appliedc
1,1-Dichloroethane (1,1-DCA)
[ug/L] 5 0.11 0.17 0.098 0.15
1,1,2-Trichloroethane (1,1,2-
TCA) [ug/L] 5 0.094 0.14 ND ND
1,1-Dichloroethane (1,1-DCE)
[ug/L] 6 0.47 0.71 0.67 1.0
1,2,3-Trichloropropoane (1,2,3-
TCP) [ug/L] 0.005 0.022 0.026 0.00091 0.0011
1,2-Dichloroethane (1,2-DCA)
[ug/L] 0.5 0.043 0.065 ND ND
1,4-Dioxane [ug/L] 1 13.8 20.7 9.9 14.9
Benzene [ug/L] 1 0.037 0.056 ND ND
Carbon Tetrachloride (CTC)
[ug/L] 0.5 0.15 0.23 0.098 0.15
Cis-1,2-Dichloroethene (cis-1,2-
DCE) [ug/L] 6 0.84 1.26 0.23 0.35
Methyl tert-butyl ether (MTBE)
[ug/L] 13 0.11 0.17 ND ND
PFOA [ng/L] 5.1 0.44 0.66 1.2 1.8
Tetrachloroethene (PCE) [ug/L] 5 10.4 15.6 31 46.5
Trans-1,2-Dichloroethene (trans1,2-DCE) [ug/L] 10 0.026 0.039 ND ND Trichloroethene (TCE) [ug/L] 5 8.2 12.3 23 34.5
Vinyl Chloride [ug/L] 0.5 0.028 0.042 ND ND
a. From production wells concentration estimates
b. Maximum observed values from production wells from available 2020 sampling data c. A safety factor of 1.5 was applied for each constituent, except for 1,2,3-TCP, which used a safety factor of 1.2.
Exhibit 6 15/19
15 6.1.2 GAC System Guarantees
The GAC system shall be guaranteed to operate at prescribed headloss conditions as outlined in Specification Section 44 31 16. The Design/Builder shall ensure that the GAC backwash/ bumping system and flow control systems are operating per the design criteria. Specific performance guarantees include:
i. GAC system effluent shall contain no measurable hydrogen peroxide residual based on a feed hydrogen peroxide concentration of less than or equal to 40 mg/L.
Measurable Hydrogen Peroxide is defined as 0.5 ppm.
ii. Empty Bed Contact Time (EBCT) shall be greater than 5 mins and loading rate shall not exceed 5.9 gpm/sf at the max design flow of 2.9 mgd. iii. Failure to meet effluent residual requirements will result in the Design/Builder adding additional media to each pressure vessel.
6.2 RO SYSTEM PERFORMANCE GUARANTEE
The Arcadia WTP expansion will include the retrofit of all four existing RO trains with ROTEC flow reversal RO technology to increase recovery for greater potable water production. The retrofitted skids shall be operated under the following conditions:
i. Recovery:
a. Operating Range: 1,758 to 1,814 gpm of feed flow per train at 90 percent recovery
b. Minimum:1,650 gpm of feed flow per train at 90 percent recovery c. Maximum: 1,900 gpm of feed flow per train at 90 percent recovery ii. CIP Frequency shall be no more frequent than every 2 months. A CIP shall be triggered by any one of the following conditions:
a. Increase of normalized feed pressure ≥ 15%
b. Decline of normalized permeate flow rate ≥ 15%
c. Decline of normalized specific flux ≥ 15%
d. Increase of normalized salt passage ≥ 15%
iii. Feed water quality parameters shall be as listed herein, with feed water pH adjusted with 93% weight per weight sulfuric acid and conditioned with antiscalant. a. Feed water adjusted pH of 6.6 minimum
b. Antiscalant chemical addition shall be from one of the following:
1) Avista Vitec-4000 = 3.5 mg/L maximum
2) AWC A-119 = 1.2 mg/L maximum
Refer to Specifications Section 46 63 23, Reverse Osmosis Membrane System for additional RO system requirements, including membrane supplier requirements.
Feed water quality to the RO System shall be within reasonable values based on City’s historical well water quality, dating from January 1, 2011, through the beginning of Acceptance Testing. Feed water quality to the RO System, prior to chemical pretreatment, measured during Acceptance Testing and Supplemental Testing exceeding the maximum values listed within Specifications Section 46 63 23 shall be reviewed and verified by the City. If verified, Design/Builder shall evaluate feed water quality data and make recommendations on operational adjustments to the RO system. Any remedy or operational adjustments requiring Exhibit 6 16/19
16 restarting the Final 30-Day Continuous Operations Acceptance test period shall be approved by the City prior to restart of the Final 30-Day Continuous Operations Acceptance test.
Per Specification Section 46 63 23, after the completion of the installation and adjustment of the system, Design/Builder shall carry out on each individual part of the system and on the complete system such tests and in such number of test runs, as agreed in test procedures, to determine whether the system complies with the performance criteria.
6.2.1 Decarbonator System Guarantees
The new decarbonator system (third tower) shall be guaranteed to operate at prescribed headloss conditions as outlined in Specification Section 46 63 75. The Design/Builder shall ensure that the decarbonator is operating per the design criteria, including a maximum hydraulic loading rate of 29.6 gpm/sf and a feed flow rate of 2,800 gpm. Specific performance guarantee includes:
i. Decarbonator effluent carbon dioxide concentration shall be no greater than 12 mg/L.
The Design/Builder shall measure the total VOC load exiting the entire decarbonator system at full WTP flow (after acceptance testing) to determine if the South Coast AQMD permit for gas phase VOC treatment is still required (greater than 1 pound per day VOCs).
6.3 Arcadia WTP Guaranteed Plant Performance Parameters Table 3 summarizes overall Arcadia WTP organics treated water quality requirements.
Table 3. Arcadia WTP Organic Treated Water Quality Performance Parameters Parameter
Proposed WTP
Effluent Goal
(µg/L)
MCL/NL
(mg/L)
Treated Water Concentration
Fraction of MCL/NLa
Initial Ultimate
1,4-Dioxane <0.5 0.001 0% 0%
TCE <0.5 0.005 0% 0%
PCE <0.5 0.005 0% 0%
1,2,3-TCP No change 0.000005 0% 0%
1,1-DCE <0.5 0.006 0% 0%
1,1-DCA No change 0.005 0% 0%
Cis-1,2-DCE <0.5 0.006 0% 0%
Carbon Tetrachloride No change 0.005 0% 0%
PFOA [ng/L] No change 5.1 0% 0%
1,1,2-Trichloroethane [µg/L] No change 5 0% 0%
1,2-Dichloroethane [µg/L] No change 0.5 0% 0%
Benzene [µg/L] No change 1 0% 0%
Methyl tert-butyl ether
(MTBE) [µg/L] No change 13 0% 0%
trans-1,2-Dichloroethene
[µg/L] No change 10 0% 0%
Vinyl Chloride [µg/L] No change 0.5 0% 0%
Exhibit 6 17/19
17 a. Values below the MDL or MRL are considered zero for calculation purposes The overall Arcadia WTP shall meet design production based on the current available raw water supply at the time of Start-up and Commissioning. Table 4 summarizes overall Arcadia WTP inorganics treated water quality requirements. The treated water from the Arcadia WTP shall meet all federal and State of California drinking water standards (e.g., MCL, sMCL, and NL).
Table 4. Arcadia WTP Inorganic Treated Water Quality Performance Parameters Average Treated Water Quality NL, MCL, or sMCL
Flow, Ultimate (gpm) 7,030 -
pH 8.3 6.5-8.5
Temperature (°C) 20 -
Total Dissolved Solids (TDS) (mg/L) 367 500
Alkalinity (mg/L as CaCO3) 97 -
Hardness (mg/L as CaCO3) 165 -
Aluminum, Total (mg/L) 0.0014 0.2
Copper (mg/L) ND 1.0
Barium (mg/L) 0.02 1.0
Calcium (mg/L) 39.3 -
Iron, Total (mg/L) 0.01 0.3 (dissolved)
Lead (mg/L) ND 0.015
Magnesium, Total (mg/L) 16 -
Manganese (mg/L) 0.01 0.05
Potassium (mg/L) 0.85 -
Arsenic (mg/L) ND 0.010
Chloride (mg/L) 37.8 250
Fluoride (mg/L) 0.10 2.0
Sulfate (mg/L) 101 250
Nitrate (mg/L as N) 0.1 10
Selenium (µg/L) ND 0.05
Silica (mg/L) 12 -
System performance shall meet all individual unit process guarantees outlined within this document and shall result in a finished water quality that meets all applicable DDW drinking water standards:
i. Inorganic chemicals in 22 CCR Table 64431-A(1) ≤ MCLs ii. Radionuclide chemicals in 22 CCR Tables 64442 and 64443 ≤ MCLs iii. Organic chemicals in 22 CCR 64444-A ≤ MCLs
iv. Disinfection byproducts in 22 CFR Table 64533-A ≤ MCLs v. Lead and copper ≤ action levels per 22 CFR §64678
Exhibit 6 18/19
18 vi. Secondary Drinking Water Standards 22 CCR Table 64449-A ≤ SMCLs vii. All compounds with notification levels (NL) should be monitored Major treated water quality requirements are summarized in Table 5.
Table 5. Arcadia WTP Major Effluent Water Quality Performance Parameters Parametera Target Value Range Units
pH 8.3 8.0 to 8.5 Units
TDS (Final Effluent) 400 350 to 500 mg/L
TDS (RO Permeate) < 120 - mg/L
Turbidity <0.2 0.1 to 0.2 NTU
Alkalinity 100 75 to 150 mg/L (as CaCO3)
Fluoride 1.0 0.5 to 1.0 mg/L
LSI 1.0 1.0 to 1.5 -
CCPP 0.5 1 to 3 mg/L as CaCO3
a. Samples will be collected, and data will be provided to the City for pH, temperature, calcium, alkalinity, and TDS that is used to calculate LSI and CCPP.
Exhibit 6 19/19