R2017-096 2017-05-22 RESOLUTION NO. R2017-96
A Resolution of the City Council of the City of Pearland,Texas,authorizing the
City Manager or his designee to enter into an amended contract with
MWH/Stantec, in the additional amount of$89,495.00,for professional services
associated with the performance of Preliminary Engineering Services for the
Expansion of the Barry Rose Wastewater Treatment Plant.
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF PEARLAND, TEXAS:
Section 1. That certain amended contract by and between the City of Pearland and
MWH/Stantec, a copy of which is attached hereto as Exhibit "A" and made a part hereof for all
purposes, is hereby authorized and approved.
Section 2. That the City Manager or his designee is hereby authorized to execute and
the City Secretary to attest an amended contract with MWH/Stantec, for the professional services
associated with the performance of Preliminary Engineering Services for the Expansion of the Barry
Rose Wastewater Treatment Plant.
PASSED, APPROVED and ADOPTED this the 22"d day of May .D., 2017.
TOM REID
MAYOR
ATTEST:
•
Yc NG LO'i�l , T
Sr4V7
SEC#TARY `%
APPROVED AS TO FORM:
DARRIN M. COKER
CITY ATTORNEY
Scope of Services for Amendment No. 1
Barry' Rose Water Reclamation Facility
WW1502, PO# 207-0000574
April 25, 2017
Exhibit A
Barry Rose Water Reclamation Facility
Scope of Services for Amendment#1
PROJECT SUMMARY
The City of Pearland (CITY or CLIENT) has requested additional services from
Stantec Consulting Services, Inc. (CONSULTANT) to procure ReUse Innovations,
Inc. (CONTRACTOR) for the piloting of the Maxflow Membrane Bioreactor (MBR)
system at the Barry Rose WWTP in Pearland, Texas. The MBR Pilot Study will be
completed under existing Project Number WW1502, PO #207-00000574,
Resolution No. R206-171 for a testing duration of 12-Weeks. The services (the
"PROJECT") will include review and development of a pilot study protocol,, pilot
testing, commissioning services, field engineering services, results analysis in
accordance with current design standards, regulatory requirements, and CITY
requirements.
DOCUMENT VERSION CONTROL AND REVISIONS
This SOW document will be maintained throughout the duration of the contract,
and will be modified to reflect changes authorized through contract
amendments. Each modification will apply a track-changes mode to identify
deletions (strikethrough) or additions (underline) in comparison to the previously.
authorized version. Table 1 summarizes SOW versions and dates, and indicates
the current version. .
Table 1 - Document Version Control
SOW,Version Date Purpose •
1.0; 04/18/2017 Draft Amendment No. 1'Submittal
2.0 04/24/2017 Revised,per City comments
ADDITIONAL ASSUMPTIONS
The'following are project assumptions:
• Consultant will perform the Tasks in Amendment No.1 on a Time and
Materials basis to the extent funding is available.
Page 1 of 2
Scope of Services for Amendment No. 1
Barry Rose Water Reclamation Facility
WW1502,PO#207-0000574
April25,2017
18000 Task,8 Additional Services Piloting Testing
18310 Membrane Bioreactor(MBR) Pilot Study
The CONSULTANT will review the pilot testing protocol provided by ReUSe
(CONTRACTOR) for performing the Pilot Study and recommend additional
requirements. Additional requirements include but are not limited to, sampling
protocols and locations, flux rate limitations, maintenance record keeping,
operation tracking, etc.
Deliverables: •
• Membrane Bio-Reactor (MBR) Pilot Study Protocol
18320 Field Engineering Services
CONSULTANT will conduct field engineering services per approved Protocol or as
required by CITY.
Deliverables:
• Daily Inspection Report
18330 Pilot Results &Analysis Technical Memorandum
After the Pilot Study is completed, CONSULTANT will prepare a draft Technical
Memorandum to document the following:
• The methodology used to perform the study.
• Inspection reports and photographic documentation of the pilot plant.
• Known operational and maintenance issues.
• Documentation of influent and effluent results.
• Results Analysis and Process Optimization Analysis.
• Cost Analysis to determine cost per 1000 gallons to treat wastewater.
18340 Preliminary Engineering Report Integration
CONSULTANT will amend Preliminary Engineering Report, reconcile, and re-run
the process model once results have been received and the technical
memorandum has been finalized.
Page 2 of 2
Attachment-Engineering Staff Hour Estimate
18000 TASK 8:ADDITIONAL SERVICES
Fee Estimate for Amendment No.1
MBR Piloting Study
-. FIRM PRINCIPALSSR PROJECT 'SR PROJECT. SR.
PROJECT '.SR PROJECT SR.PROJECT -SR PROJECT 'STRUCTURAL 'PROJECT
ASOOOTASK'8:','ADDITIONALSERVICES FIRM PRINCIPAL -.MANAGER MANAGER' (PROJECT ENGINEER ENGINEER ENGINEER -ENGINEER(ISO) 'ENGINEER , ENGINEER' CONSTRUCT ON SR DESIGNER '"CERICAL" TOTAL HOURS,'TOTAL MWN LABOR FEE
-
TECHNICAL LEAD) (MECHANICAL) (ELECTRICAL) - MANAGER _
18310 Membrane Bioreactor(MBR)Pilot Study -1" 4 6 6 8 25 $ 5,190.00
18320 Field Engineering Services 1 8 4 6 60 30 109 $ 17,380.0D
18330 Pilot Results&Analysis Technical Memorandum 1 2 1 4 24 8 40 $ 6,810.00
18340 Preliminary Engineering Report Integration 1 2 1 4 16 8 32 $ 5,490.00
0 $ -
O $ -
O $ -
0 $ -
O $ -
•
0 $ -
O $ -
0 $ -
O $ -
O $ -
O $ -
TOTAL STAFF HOURS 4 16 6 20 106 8 0 0 0 0 0 46 0 206
MWH BILLING RATE(a) 300.00 175.00 200.00 280.00 165.00 190.00 190.00 190.00 190.00 165.00 210.00 '110.00 80.00 <$ 34,870.00
TOTAL MWH LABOR FEE $ 1,200.00 $ 2,800.00 $ 1,200.00 $ .5,600.00 $ 17,490.00 $ 1,520.00 $ - $ - $ - $ - $ - $ 5,060.00 $
SUMMARY OF SUB-CONSULTANT SERVICES ,
-"NOTES&.COMMENTS ' —.. . - .. _ _. . ... . - - _... ....
SUB-CONSULTANT NAME DISCIPLINE FEE
(T8E)Indicates tasked lobe billed by Time 8 ReUse Innovations,Inc. MBR Equipment Supplier $ 48,750.00
$ -
(See Attached Detailed Fee Estimate by ReUse) •
' SUB-CONSULTANT ADMINISTRATIVE FEE @10%$ 4,875.00
REVISIONS . _ SUMMARY OF:PROJECTED OIRECT'EXPENSES " - - - `
DATE BY DESCRIPTION Type of Expenses - Unit I Cost per unit TOTAL
4/272017 FJC Revised per Client Comments Reimbursible Expenses - $ 1,000.00 '
- TOTAL DIRECT EXPENSES $ 1,000.00
TOTAL(MWH Labor Fee,Sub-Consultants Fee,Direct Expenses) $ 40,745.00
(a)Average rate by category.Actual rates will vary by individual within each category I GRAND-TOTAL(MWH Labor Fee,Sub-Consultants,Direct Expenses'$ 89,495.00
•
reUseISAA3-UrSA.es I Water and Wastewater Membran
innovations inc.
Mr. David Irvine
Mr.Javier Cantu, et al
Stantec
Houston,Texas
On behalf of Eric Wilson,the City of Pearland
Mr. Irvine—
Thank you for the opportunity to submit a proposal for the piloting of The MaxFlow MBR at the
Barry Rose WWTP in Pearland,Texas. It is our intent to allow you to thoroughly review the A3-
USA MaxFlow membrane in a variety of scenarios, and prove its ability to provide what the City
, needs for long-term membrane treatment.The following proposal stems from the discussions
ReUse Innovations has had jointly with Stantec and the City.
Intent& Duration
Pilot a small MBR equipped with the A3 MaxFlow membrane over approximately.a 3.5-month
period (2 weeks startup,:12 weeks operation) at the Barry Rose wastewater treatment plant in
Pearland,Texas. The plant will sit alongside the MCC building on the existing concrete slab.
The pilot will follow a protocol developed jointly by A3 and ReUse, and refined by Stantec and
the City. It will be intended to demonstrate the membrane's performance across a variety of
flux rates and other variables, and result in a data set useful for comparing the MaxFlow
membrane to competing membranes and other non-MBR technologies.
System
ReUse is proposing to use a skid-mounted MBR arranged in a cellular format.The skid is
approximately 12'W x 45'L, and contains three(3) HDPE tanks contained in a coated carbon
steel frame. All equipment and controls are mounted on the same skid, making it a true
packaged plant, arriving plumbed and wired.
Influent will be pumped from adjacent manhole into influent fine screen.
Operation
ReUse and A3 will jointly provide startup and operation labor. Startup will be fully staffed, and . .
once operational,the plant will have half-time operation on staff(2 full weeks/month).The
system will also be continually monitored via ReUse and A3 remotely.
•
ReUse and A3 welcome and encourage engagement by City staff and operators throughout the
piloting process, so that the City might better acquaint itself with the operation and
functionality of the MBR.
Cost
ReUse and A3 request the following funds for the pilot study.
Shipping: $10,000
Cranes: $10,000
Operation by ReUse/A3: $8,750 (3.5 months x$2,500/month)
System preparation and mothballing: $20,000
Total: $48,750
City/Stantec Responsibilities
The City and/or Stantec will be responsible for the following items:
Providing 100amp service to site, & electric for pilot
Providing telecommunications line to plant (Cat 5E [point of service must be within 300'])
Conducting all lab testing required for pilot, per protocol
Providing activated sludge for seeding
Disposal of screenings, waste sludge and effluent from pilot unit
Pressurized clean water line for system decommissioning
Thank you again for the opportunity to pilot the A3 membrane for the City of Pearland. We look
forward to a successful trial, and the potential of working together in the future.
Regards,
Randall Nelson
Design Team Leader
ReUse Innovations, Inc.
71 Ledford Drive .
Franklin, NC 28734
reUse ,1*4A-3=ursA
;41 innovations, inc. Water and Wastewater Membranes
Overview
The Pilot Study Phase is designed to provide background research,criteria for sizing of the full-scale
treatment equipment, installation guides, and actual testing of the proposed system to achieve the
effluent discharge parameters that may be placed on the project should regulatory agency approval be
granted.
The membrane module flux rate and biological testing of the treated product have been identified as
the prime objectives of the study.The pilot plant equipment components will be evaluated relative to
their ability to achieve reliable, uninterrupted, and guaranteed process performance. The effluent
monitoring parameters and effluent limits are to be generated in the infant phase of the project. The
full-scale equipment needs will be determined and the project cost refined for the full-scale needs of the
project.
Note: Even if the pilot study should demonstrate possible higher membrane flux rates than proposed for
the ultimate final plant at 10 MGD,we do not recommend changing the final design parameters.The
pilot study will be only operating for 3 months; it will not mimic 10+years of actual operational life.
Because equipment lifespan is critical to project feasibility,and lifespan may be strongly correlated with
conservative flux rates, it is important that all MBR suppliers be evaluated based on an equal design flux
rate.Thus,we recommend that the annual daily average flux rate be limited in the final bid documents/
specifications,so as to provide accurate cost comparisons for MBR systems that will operate for the
timeframes desired by the City.
Process/Protocol
The mixed liquor will be started by pumping mixed liquor from the existing wastewater plant. The
mixed liquor will be pumped through the screen for the pilot plant before being introduced into the
pilot plant. The first mixed liquor threshold operating point will be 8,000 mg/I in the anoxic and oxic
cells and a 10,000 mg/I in the membrane cell with an average daily flow of 30,000 GPD.The
corresponding membrane flux will be at 6.2 gfd.This flux is 1.6 times higher than the proposed annual
average design flux rate for ultimate MBR plant @ 10 MGD.The optimum F/M.ratio and SRT will be
demonstrated. Daily flow variations will be simulated during the first two week at this threshold level.
During the last week at this threshold level the plant will be stressed to the highest flux rate
demonstrable at this operating level and held for 48 hours with influent wasted water at 1/4 strength.
Each day a composite 24-hour raw BOD, COD,TSS.Ammonia,TN and Phosphorus sample will be
sampled and sent to laboratory for testing. Each day a composite 24-hour effluent BOD, COD,TSS.
Ammonia,TN and Phosphorus sample will be sampled and sent to laboratory for testing.
pg. 1
The second mixed liquor threshold operating point will be 12,000 mg/I in the anoxic and oxic cells and a •
14,000 mg/I in the membrane cell with an average daily flow of 50,000 gpd.The corresponding
membrane flux will be at 10.3 gfd. This flux is 2.7 times higher than the proposed annual average design
flux rate for ultimate MBR plant @ 10 MGD.The optimum F/M ratio and SRT will be demonstrated.
Daily flow variations will be simulated during the first two week at this threshold level. During the last
week at this threshold level the plant will be stressed to the highest flux rate demonstrable at this
operating level and held for 48 hours with influent wasted water at 1/4 strength. Each day a composite
24-hour raw BOD, COD,TSS.Ammonia,TN and Phosphorus sample will be sampled and sent to
laboratory for testing. Each day a composite 24-hour effluent BOD, COD,TSS.Ammonia,TN and
Phosphorus sample will be sampled and sent to laboratory for testing.
The third mixed liquor threshold operating point will be 18,000 mg/I in the anoxic and oxic cells and a
20,000 mg/I in the membrane cell with an average daily flow of 75,000.gpd.The corresponding.
membrane flux will be at 15.4 gfd. This flux is 4 times higher than the proposed annual average design
flux rate for ultimate MBR plant @ 10 MGD.The optimum F/M ratio and SRT will be demonstrated.
Daily flow variations will be simulated during the first two week at this threshold level. During the last
week at this threshold level the plant will be stressed to the highest flux rate demonstrable at this
operating level and held for 48 hours with influent wasted water at 1/4 strength. Each day a composite
24-hour raw BOD, COD,TSS.Ammonia,TN and Phosphorus sample will be sampled and sent to
laboratory for testing. Each day a composite 24-hour effluent BOD,COD,TSS.Ammonia,TN and
Phosphorus sample will be sampled and sent to laboratory for testing.
The sludge from the pilot unit will be wasted to the City's existing sludge digester.
The raw wastewater will be pumped into the pilot's screen from the City's existing influent pump
station. A grinder pump will be used to pump the raw wastewater.
TCEQ Notes
The economic feasibility of primary sedimentation would normally be evaluated for facilities designed
for an average daily flow of 5.0 million gallons per day or more under TCEQ regulations.
Primary Sedimentation will not be explored in this pilot test.Although the Berry Rose WWTP will
ultimately be greater than 5.0 mgd ultimately, this pilot is not intended to evaluate primary
sedimentation. .
The design sludge retention time (SRT)for an MBR must be at least 10 days, but not more than 25 days:
An MBR system designed for an SRT or MLSS outside the range above requires a pilot study to provide
data that demonstrates that the design parameters are sustainable and can achieve the expected
performance to the executive director's satisfaction. .
The working SRT for final design is a primary important evaluation.issue in this pilot study. A3-USA
normally would operate its facility at an SRT above 25 days. It would be necessary to show in this pilot
that the process will work properly at an SRT greater than 25 days. The levels of testing and data
recording outlined above should satisfy this TCEQ requirement. .
pg•2 .
An MBR system with a peak flow rate that is greater than 2.5 times the average daily flow must use an
equalization basin,off-line storage,or reserve membrane capacity to accommodate the higher peak
flow.
The current facility experiences multiple peaks per year in the range of four times the average daily flow
for periods more than 48 hours during which the plant influent wastewater strength drops to
approximately 1/4 strength. Therefore, the pilot study will mimic at various levels of mixed liquor, F/M
ratio, MLSS, MLVSS both the diurnal flow variations and the peak flow'variations.
Conclusion
The pilot study will be designed to evaluate the membrane performance under actual operational
conditions, including flow variations and influent wastewater characteristics as outlined previously.
The treatment and pretreatment processes evaluated in a pilot study will be equivalent to the processes
that will be used in the wastewater treatment facility final design.
The results of the pilot study will include the following recommendations:
(I) net flux rates for design flow and peak flow; •
(II) average and maximum transmembrane pressure;
(III)cleaning and backwash intervals;
(IV) expected percent chemical recovery after chemical cleaning;
(V)dissolved oxygen concentrations for reactors and membrane basins;
(VI) MLSS concentrations for reactors and membrane basins;
(VII)SRTs for reactors and membrane basins; and
(VIII) expected effluent concentrations of conventional pollutants and nutrients, including the
pollutants and nutrients that will be limited or monitored ih the wastewater treatment facility's
wastewater permit.
(IX) Redundancy.
The study will demonstrate that the proposed wastewater treatment facility will be able to operate at
normal operating parameters and conditions for design flow with the largest MBR unit or train out of
service.
The study will demonstrate that the proposed wastewater treatment facility will provide acceptable
methods of providing redundancy.The final pilot study report will include calculations that demonstrate
adequate redundancy within the wastewater treatment facility.
The pilot study will be designed to begin the training of current operational staff to follow the
manufacturer's recommended frequency for MBR component inspection,testing,and maintenance.
During the pilot study a preliminary operating and maintenance manual will be developed for use in the
design and permitting phase of the project.
pg.3