City of Pearland, TX
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John Hargrove Environmental Complex Water Reclamation Facility Expansion
About. The John Hargrove Water Reclamation Facility (JHEC WRF) was constructed in 1998 and currently has a permitted treatment capacity of 4 million gallons per day (MGD). Current flow data indicates that the monthly average influent flow during recent wet weather has met or exceeded the 75% average daily flow rule and the Texas Commission on Environmental Quality (TCEQ) requires that planning for plant expansion to begin when flows reach 75% of plant rated capacity. This prompted the City to begin preliminary engineering in 2016 to expand the facility to a 6 MGD ADF.
Scope. The JHEC plant will be designed and constructed to utilize the existing sequencing batch reactor (SBR) technology it does now. However, the design and construction will allow the plant to be converted to utilize membrane bioreactor (MBR) technology if the future if the City so desires. The MBR treatment process utilizes membranes in conjunction with a biologic process to create an ultrafiltrated or high-quality effluent. Planned infrastructure will also be constructed for easy expansion to 8 MGD in the future if necessary, where appropriate and cost effective.
Improvements to be constructed for the 6 MGD facility include expansion and rehab of both on-site influent lift stations, a new headworks, rehabilitation of existing SBR’s 1 through 4 and existing aerated sludge holding tanks (ASHT’s) and construction of new SBR’s 5 and 6 and a new ASHT. Blowers serving the ASHT’s and SBR’s will be replaced. A new non-potable water system and two-story sludge dewatering facility will also be constructed. Renovations to the existing lab are planned while new buildings for operations, a maintenance shop and covered storage area are also proposed. Other electrical, SCADA, yard piping, site security and building automation improvements are planned as well.
This project will be procured through the Construction Manager at Risk (CMAR) process.
Schedule Info
Base Line | Current | |
Design Start | March 2019 | April 2019 |
Bid Start | November 2020 | September 2019 |
Construction Start | January 2021 | July 2021 |
Proposed Construction Completion | December 2023 | June 2024 |
Below is information pertaining to the Budget and Funding of this project. Last updated April 2023..
Funding Sources | |
General Revenue - Cash | - |
W/S Revenue Bonds | $37,500,000 |
Impact Fee - Cash | $5,131,000 |
Impact Fee - Debt | $37,500,000 |
Other Funding Sources | $462,236 |
Total Funding Sources | $80,593,236 |
Expenditures | |
PER | $462,236 |
Land | $100 |
Design | $5,900,000 |
Construction | $73,100,000 |
Construction Management/Inspection | - |
Construction Materials Testing | - |
FF&E | $500,000 |
Total Expenditures | $79,962,336 |
Project Contingency/Balance | $630,900/$0 |
April
Highlights:
The new completion date is June 3, 2024.
Project Updates:
• The new Headworks have been fully commissioned and turned over to the City for general use.
• Demolition of the old Headworks began in February 2024.
• Process mechanical piping is approximately 97% complete. • The Operations building is complete. o The certificate of occupancy is expected by the end of April 2024.
• The Sludge Building process mechanical piping is complete.
• The Motor Control Center (MCC)2 final terminations are complete.
o The system should be ready for commissioning and handed over to the City by the end of April 2024.
• T-Filters concrete structure is complete.
o CenterPoint is scheduled to remove the existing poles and transfer the permanent power by the end of April 2024.
• SBR 1 and the associated blower cleaning and demolition is complete.
o The process mechanical and electrical installation was completed in March 2024.
o The instrumentation work should be complete by the end of April 2024.
• SBR 2 and the associated blower cleaning and demolition is complete.
o The process mechanical and electrical installation should begin by the end of April 2024.
o The instrumentation work is scheduled to begin in May 2024.
• SBR 3 and the associated blower cleaning and demolition is complete.
o Demolition of the old blowers and existing aerated air pipe is complete.
o The process mechanical and electrical installation should begin by the end of April 2024.
o The instrumentation work should be complete by mid-May 2024.
• SBR 4 and the associated blower were handed off to the City in January 2024.
• Demolition of Lift Station 1 began in February 2024.
• Site paving began in February 2024
November
Highlights:
The project is now approximately one-hundred-twenty days behind the original substantial completion schedule. Failures of the existing equipment and other operational issues have extended the projected substantial completion date to February 2024. The project team has worked to re-sequence some of the work items to mitigate the impact of these unforeseen operational issues, but the ongoing failures and unforeseen site conditions will have a substantial impact on the schedule. The operational failures began in September 2022 and have continued. Since June of this year, the contractor has assisted operations with the removal of wall pumps at Sequence Batch Reactor (SBR) #1 and #2 and maintained bypass pumps on Lift Station (ILS) #1. Since August, the contractor has been de-ragging, fueling and maintaining the rental of two chopper pumps at Lift Station #1, and renting and maintaining hoses at Aerated Sludge Holding Tanks #1 and #2. The rental of these pieces of equipment and the labor to maintain the operations of the equipment are recent examples of plant assistance being provided by the contractor that are having a major impact on the schedule and the project budget. The project has absorbed some of the cost associated with the assistance, but before project close-out, the additional expenses will need to be added to the contractor’s P.O. for work that is out of scope and for labor necessary to assist operations in repairs, installations and maintenance of equipment and processes. A Change Order will be created in December to extend the schedule.
Upcoming Work Items:
- Complete pipe installation for the Aerated Holding Sludge Tanks (AHST).
- Demolition of existing Headworks.
- Renovation work on Lift Station 1.
- Renovation work has begun on SBR 3 and 4.
- Continued coordination between staff and the contractor in the performance of the operational program.
o Operational challenges have occurred on equipment that was not scheduled to be replaced or rehabilitated in the project. Staff and the contractor have been working collaboratively to resolve the problems.
o Staff will meet with the contractor and the electrical sub-contractor to ensure the continuation of operations during the rehabilitation of the existing basins.
o Staff is providing data and reports to the contractor pertaining to integration concerns during the rehabilitation
- Complete installation of the electrical duct banks.
- Complete yard pipe installation.
- Complete SCADA integrations with the UV system and Tertiary Filters.
- Begin site finishes, including landscaping and fencing.
April
Highlights:
The project has been approximately sixty days ahead of the substantial completion schedule. Still, recent failures of the existing equipment and other operational issues may extend the projected September 2023 substantial completion date. The project team is working to re-sequence some of the work items to mitigate the impact of these unforeseen operational issues. When a revised plan has been finalized, the project schedule will be updated as necessary. Currently, the hydraulic profile, which calculates the hydraulic grades throughout the plant, cannot regulate the raw sewage into Sequence Batch Reactors (SBR) 5 and 6 because the existing headworks elevation is higher than the splitter box gate elevation. This is causing raw sewage to continuously flow into the splitter box when the plant is operating. The overflow into the splitter box is disrupting the sludge-to-raw sewage ratio. The previously proposed SBR 5 and 6 seeding will not be feasible until the new Headworks and Lift Station 2 are in service. Lift Station 1 has been operating on bypass pumps for the last several months.
Upcoming Work Items:
- Pipe installation for the Aerated Holding Sludge Tanks (AHST).
- Start-up on SBR 5 and 6 is expected in June 2023.
- Renovation work on Lift Station 2 which started in September was put on hold because of the operational issues the plant is experiencing during the construction project.
o By-pass pumping is continuing.
o The work will resume after SBR 5 and 6 are operating.
- Renovation work has begun on SBR 3 and 4.
- Continued coordination between staff and the contractor in the performance of the operational program.
o Operational challenges have occurred on equipment that was not scheduled to be replaced or rehabilitated in the project. Staff and the contractor have been working collaboratively to resolve the problems
o Staff will meet with the contractor and the electrical sub-contractor to ensure the continuation of operations during the rehabilitation of the existing basins.
o Staff is providing data and reports to the contractor pertaining to integration concerns during the rehabilitation. • Continue installation of the electrical duct banks.
• SCADA integrations with the UV system and Tertiary Filters has begun.
September
Highlights:
• The concrete work at the Headworks which began in April is scheduled for completion at the end of August.
• PLW has been working to mitigate the supply chain impact to the project.
o Alternative materials are being considered for approval by the engineer.
o Work is being done out of sequence to allow additional time for materials that are taking longer to arrive than anticipated. o PLW is working with suppliers to expedite the delivery of materials.
o HDPE pipe has been substituted for ductile iron as approved by the Engineer
▪ The pipe sub-contractor has been having problems with ordering and receiving large diameter ductile iron pipe. The pipe delivery date was moved from November 2021 to February 2022, and then to April 2022.
▪ In April, the sub-contractor could not provide a revised delivery schedule.
▪ The decision was made to install HDPE pipe below ground to mitigate the impact the pipe and fittings shortage is having on the overall schedule.
• HDPE functions as well as, and in some applications, better than ductile iron pipe because it is a more durable product that can withstand greater loads.
• HDPE pipe cost more than ductile iron, but the cost is offset by the impact that waiting for an unknown delivery date of the ductile iron pipe will have on the critical path.
• The contractor’s contingency is absorbing the additional cost of the HDPE pipe, so there is no negative impact to the project budget because of the pipe substitution.
Upcoming Work Items:
• Complete the installation of the NPW piping and Scrubber equipment.
• Installation of the walk bridge around SBR 3,4, and 5.
• Start-up on SBR 5 and 6 expected to begin late September, mid-October.
• Begin work on Lift Station 2.
• Continued coordination between staff and the contractor in the performance of the operational program.
o Staff will meet with the contractor and the electrical sub-contractor to ensure the continuation of operations during the rehabilitation of the existing basins. o Staff is providing data and reports to the contractor pertaining to integration concerns during the rehabilitation.
• Begin by-pass pumping on Lift Station
June
Highlights:
Headworks and yard piping:
- PLW, the Construction Manager At Risk (CMAR) will submit the leak testing plan for Sequential Batch Reactor basins No. 5 & 6 to the Splitter Box by the end of June.
- Poured columns at Headworks in April.
- Began pouring the Headworks walls in May.
Sludge Building:
- The Sludge Building belt filter presses were installed in May.
- The elevated deck was completed in May.
- The hollow core panel roof was installed on the Sludge Building in April.
UV System:
- The new UV gates arrived in mid-May and will be installed within the next two weeks.
- Substantial completion on the UV System, except for the damaged UV gates was achieved in February.
- The new UV System is operational. o The contractor will hold a training session in mid-June.
Tertiary Filters (T-Filters)
- Tertiary Filters equipment was delivered at the end of March 2022.
- Startup of the T-Filter equipment began the week of April 25, 2022.
- Since the start-up, performance issues have been identified relating to the existing components that were not replace in the rehabilitation scope of work.
- The contractor has recommended replacing the existing valves and overhauling the drive motors. Staff are reviewing this recommendation and will request a proposal for the additional work.
- The contractor began work on the subgrade piping at the new T-Filters
Upcoming Work Items:
- Installation of the Pulsed Air Mixing system which is scheduled for delivery by the end of June.
- The underground piping is approximately 75% complete.
- Delivery of the Pre-rotation scum pumps by the first week of June.
- Installation of the solids removal equipment.
- Ductbank installation is ongoing. Electrical work has not commenced.
- Continued coordination between staff and the contractor in the performance of the operational program.
- Staff will meet with the contractor and the electrical sub-contractor to ensure the continuation of operations during the rehabilitation of the existing basins.
- Staff is providing data and reports to the contractor pertaining to integration concerns during the rehabilitation.
March
Highlights:
As of latest pay estimate, the project is 32% complete by expenditure and 52% complete by time expended. In the next several months the expenditures will increase significantly because of the work that has started on the Headworks and the Chemical, Sludge, and Operations buildings, including preliminary electrical and HVAC work.
Upcoming Work Items:
- Complete SBR 5 and 6.
- Complete generator pads 3 and 4.
- Replace Channel Gates in the Headworks.
- Continue work on the Chemical building.
- Continue work on the Sludge building.
- Begin work on the Operations building.
- Begin work on Blower building 1.
2021
October
Highlights:
Contractor began mobilization on July 1, 2021
- The Construction Manager At Risk (CMAR) completed the pre-construction services on June 30, 2021 and immediately began construction.
- To date, the CMAR has:
- Begun draining the Sludge Holding Tanks-expected to be complete by October 22nd.
- Demolished the sludge building.
- Demolished the Surge Basin.
- Poured the slab for the Construction Materials Testing (CMT) laboratory to conduct on-site testing:
- Due to the complexity of the JHEC expansion, CMT consultant agreed to set up an on-site laboratory in order to expedite the test results, and to avoid multiple trip charges because of the frequency that would be necessary to test aggregates, concrete, and soils.
- The site lab is supported by a main off-site laboratory for the more sophisticated tests.
- Established a construction entrance.
- Established site parking area.
- Completed the excavation for Sequential Batch Reactors (SBR) 5 & 6.
- The construction plans were resubmitted to Permits to incorporate changes that were made during the bidding phase. The project team resubmitted the drawing to the Permits Group to make sure that the changes received City approval before being implemented.
- The Issue for bid drawings received permit approval prior to the contractor bidding out the various work packages.
- When the CMAR bid the project, potential contractors proposed improvements to the design, the sequencing, and materials that modified the construction drawings that were previously permitted.
- The improvements do not impact the Guaranteed Maximum Price (GMP), but they did result in revisions to some of the plan sheets. Some of the changes included:
- The removal of the Influent Lift Station hatch.
- The addition of valves to the lift station.
- Adjustments to the overall headworks design.
- Additional filters and belts to the sludge building.
- Additions to the UV system.
- Changes to the hot water recirculation pumps.
- Additional building signage.
- The Issue for bid drawings received permit approval prior to the contractor bidding out the various work packages.
- The contractor is working on a compressed schedule because some material has arrived earlier than previously anticipated due to the Early Works Package (EWP) approval.
- The EWP has had a significant, positive impact on the project. Since pricing for materials were locked in and ordered in the first and second quarter of this year, the project is not being subjected to the volatility of the current construction market. The cost of materials has continued to increase and certain components that were released for fabrication/shipment with the EWP are now experiencing double and triple delivery schedules
Upcoming Work Items:
- Pour foundation slab for the Sequencing Batch Reactors (SBR) 5 & 6 should begin the week of November 15th.
- Begin work on the Tertiary Filter the week of November 8th.
- Blower building #2 work should begin by the end of November.
- UV system demo should begin by the end of November.
- Begin work on the new Operations building week of November 13th.
June
Recommendation:
The 100% plans are in the final review process. TWDB returned comments on April 28. The revised schedule provides for the submission of the GMP by the end of May. The remaining equipment and systems have been determined absolutely necessary for the sustainable and efficient operations of the plant, so any additional Value Engineering exercises are not feasible.
Staff has calculated the benefit of Council approving the EWP1 that totaled $19.995M. In light of the current market conditions this equates to about a $2.2 million dollars in savings had the packages been bid under current conditions.
The GMP is expected to be presented to Council for approval in a June 2021 meeting. The schedule has slipped due to the extended bid phase in which the contractor is negotiating with multiple subcontractors and vendors on the terms and conditions to hold bid pricing while also vetting subcontractors to determine the ability to acquire the materials due to longer than anticipated lead time.
May
Highlights:
As a result of the recent changes to market conditions, the Balance of Plant (BOP) packages are showing increased pricing over the CMAR’s previous estimates that were based on y/y inflationary increases. To date, PLW has received all twelve (12) BOP bid responses and all except one is anywhere from 5% to 20% greater than anticipated. The GMP for the JHEC WRF is now anticipated to be about $70.8 million dollars, an increase of approximately $5.9 million dollars or approximately 9%. The CMAR is working diligently to complete his preparation of the GMP, securing his purchase pricing by the end of May for an early June award.
At this time, the approved Construction budget ($65,200,000) plus the project Contingency ($4,960,000) is not adequate to cover all Construction Costs (estimated GMP of $70.8 million plus Material Testing estimated at $450,000 and Construction Management of $1,670,000) totaling $72,920,000. Staff has developed an adjusted budget to meet these costs and maintain a $500,000 contingency. The revised construction budget of $73,100,000, an increase of $7,900,000, is proposed as part of the mid-year budget adjustments in June.
Upcoming Work Items:
The 100% plans are in the final review process. TWDB returned comments on April 28. The revised schedule provides for the submission of the GMP by the end of May. The remaining equipment and systems have been determined absolutely necessary for the sustainable and efficient operations of the plant, so any additional Value Engineering exercises are not feasible.
Staff has calculated the benefit of Council approving the EWP1 that totaled $19.995M. In light of the current market conditions this equates to about a $2.2 million dollars in savings had the packages been bid under current conditions.
The GMP is expected to be presented to Council for approval in a June 2021 meeting. The schedule has slipped due to the extended bid phase in which the contractor is negotiating with multiple subcontractors and vendors on the terms and conditions to hold bid pricing while also vetting subcontractors to determine the ability to acquire the materials due to longer than anticipated lead time.
February
Recommendation:
- At the February 22, 2021 Council meeting, Staff will submit Change Order #1 (EWP1) for the Construction Manager at Risk contract with PLW Waterworks LLC for Council approval and authorization in the amount of $19,995,251.00 bringing the entire contract total, including Preconstruction Services (previously awarded $828,960.00) to $20,824,211.00 and will recommend Council approve this first step towards a final GMP to implement the equipment procurement and fabrication process.
January
Recommendation:
- At the January 25, 2021 City Council meeting, Staff will recommend that Council authorize award of a contract amendment to Adurra Group for Final Design and Construction Phase Services. Following this authorization, the remainder of the design changes due to the value engineering will commence and Construction Phase Services will begin upon the Notice to Proceed issued to the contractor.
October
Recommendation:
- At the October 12, 2020 City Council meeting, Staff recommended that Council authorize a revision to the previous resolution to authorize the submittal of an application for TWDB funding. Following this authorization, the application will be updated and forwarded immediately to TWDB to be included in the November Board agenda for approval. Council will have an additional opportunity to approve the final loan application and amount when the loan is scheduled for closing in early 2021.
July
Highlights:
- Staff advertised a Request for Qualifications in May 2018 for design services and in July 2018 selected Ardurra Group for the design of the project. A contract for design services was awarded in March 2019.
- 30% plans were submitted for review by Ardurra to the City in September 2019.
- An RFQ for Construction Manager at Risk (CMAR) was advertisedinSeptember 2019. Two respected CMAR firms responded: PLW and McCarthy with McCarthy declining to submit a proposal due to an inability to meet the City’s project schedule. The CMAR Pre-Construction Services contract was awarded to PLW in January 2020. PLW delivered the Reflection Bay project in budget and six months early in late 2018.
- CMAR Pre-Construction/Kickoff Meeting on was conducted on January 21, 2020 and Pre-Construction Services began immediately with PLW working directly with the City and Ardurra to guide the design process for constructability, and cost effectiveness and progressive cost estimating.
- PLW’s 30% Opinion of Probable Construction Cost (OPCC) of$64,459,970.00 was delivered in mid-March and reviewed at a meeting held on March 17, 2020. Their 30% estimate included$56,494,319 for the cost of work, $2,739,975 for the CMAR fee of 4.85%, a five percent (5%) contingency fee of $2,824,716, and $1,572,000 in bonds in insurance. The $64 million cost estimate also included the Pre-Construction CMAR fee of $828,960 that has already been awarded by Council.
- Ardurra has now completed the Draft Environmental Information Document (EID) for TWDB and sent letters to the required commenting Agencies. A virtual Public Comment meeting has been scheduled for July 28, 2020. Public Notice will run in Pearland Reporter on June 24, 2020,in the Houston Chronicle, on June 26, 2020 and LaVoz on July 5, 2020. The Public Notice as well as the link to the EID is located on the City’s Projects Website. The meeting will be conducted where people can view the information but must register in advance if they wish to speak.
- 60% Construction plans were submitted on May 22, 2020 to the team for review and for PLW to develop their 60% cost estimate. The 60% plan review meeting with the team, including presentation of PLW’s 60% OPCC, was held on July 9, 2020.
- The 60% OPCC estimate presented at the July 9th meeting had a$4,576,611.00 upward trend from the 30% estimate for a total estimate of $69,744,336.00. The 60% estimate included $61,070,931 for the cost of work, $3,110,037 for the CMAR fee of 4.85%, a five percent (5%) contingency fee of $3,053,546, and $1,680,863 in bonds in insurance. The Pre-Construction CMAR fee of $828,960 is still included in this price.
- Based on the current proposed CIP which allocates $50,530,000 for construction and $4,960,000 for contingency, we are currently $14.3 million over budget. Value engineering options were presented by the CMAR at the 60% OPCC meeting. Staff will review these options internally and reconvene discussions with the CMAR team on July 22nd. Staff is conducting a detailed review of the cost estimate and comparing it with the Engineer’s estimate to determine the root cause of the higher costs. From this analysis the value engineering options presented will be reviewed and considered and also potential re-design may be conducted. As a reminder this is the purpose of CMAR to review and develop early cost estimates, review and work as a team to bring these costs back into budget through value engineering and constructability reviews.
- Regular design team meetings continue on a monthly basis with the CMAR making planning recommendations and providing information on construction impacts.
- In March 2017 Staff submitted the Project Information Form (PIF)to Texas Water Development Board (TWDB)to register the project for an invitation to apply for TWDB funding for the project.In May, this year,Staff submitted an online funding application to TWDB. The application was reviewed and deemed administratively complete on May 14, 2020 and assigned TWDB Project No. 73887.The application will be in process through August 2020. In September/October 2020, TWDB will put the application on the TWDB Board calendar to approve the loan commitment.In January/February 2021 the City can close on the loan.
- TWDB funding options consists of two very favorable funding alternatives: Clean Water,State Revolving Fund: Equivalency and Non-Equivalency. Each come with different requirements and slightly different interest rates and funding mechanisms. There are also different restrictions on the CMAR process. Staff met with TWDB officials on June 23 to discuss details and options for both and are planning a meeting with the Finance Department to review this information. Staff will provide the most beneficial funding source for the City when Council considers approval of the submission for the loan application process.Upcoming Work Items:
- 60% OPCCValue Engineering Review–July22nd•Environmental Public Meeting –July 28th
- 90% plan submittal scheduled for August 2020
Read the full memo from July 2020
June
NOTICE OF PUBLIC MEETING
On Tuesday, July 28, 2020 at 6:00 PM, the City of Pearland (City) will conduct a virtual public meeting to provide an opportunity for public comment on the Draft Environmental Information Document (EID) for the City’s proposed project to rehabilitate and expand the treatment capacity of the John Hargrove Environmental Complex Wastewater Reclamation Facility (JHEC WRF). The proposed project will expand the average daily treatment capacity of the JHEC WRF from the current capacity of 4 million gallons per day (MGD) to 6 MGD within the existing site limits. The JHEC WRF is located at 5900 Magnolia Parkway, Pearland, TX 77584.
In observance of COVID-19 social distancing measures, this meeting will be held in a virtual format. To watch the meeting click here. To speak at the meeting, register here. For telephone access to the meeting email cdavis@pearlandtx.gov.
An application for financial assistance for the project has been filed with the Texas Water Development Board (TWDB) Clean Water State Revolving Fund (CWSRF). The total estimated project cost is $75,000,000, which will be financed through increased user rates.
The EID was drafted to meet the requirements of Title 31 of the Texas Administrative Code, Chapter 375 (31 TAC §375), Subchapter E (Environmental Reviews and Determinations for TWDB CWSRF) and to satisfy the requirements of the National Environmental Policy Act (NEPA). The EID was drafted in conjunction with the City and the TWDB application for funding assistance and outlines potential environmental impacts from the proposed project.
One of the purposes of this meeting is to discuss the potential environmental impacts of the project and alternatives to it. The northwest corner of the site is within the 100-year floodplain, but no construction will occur in that area of the site. Click here to review the [SS1] Draft EID for the project. for 30 days following the date of this notice. Written comments may be addressed to Cara Davis, Senior Project Manager, Engineering & Capital Projects, City of Pearland, 3519 Liberty Drive, Pearland, TX 77581 or to the TWDB at Texas Water Development Board, P.O. Box 13231, Austin, Texas 78711-3231 or Environmental-RWPD@twdb.texas.gov.
January
- The TWDB loan application will be for $64 million which will cover costs for engineering design, CMAR pre-construction services and construction phase services for the 2 MGD expansion.
- The full amount of the $64 million will be maintained as the ultimate loan amount, requesting additional TWDB funds after award are subject to availability and not guaranteed.
- At the January 27, 2020 City Council meeting, staff will recommend a resolution to authorize the submittal of an application for TWDB funding.
- Staff will recommend a resolution to authorize approval of the selection process for Pre-Construction services to PLW Waterworks in the Lump Sum amount of $828, 960 as outlined in the November 14, 2019 memo to Council.
November
Status
The Selection Committee reviewed the qualifications of the responsive proposal which included Experience with previous projects of similar size and scope, quality and experience of key personnel assigned, history of meeting or exceeding cost and schedule targets, safety records, project approach, self-performance capabilities.
The fee proposal was unsealed and reviewed for compliance with instructions within the request. Part One requested respondents provide the billing rate for each team member and the estimated man/hours required to perform Pre-Construction Services. This information was then extrapolated to provide an estimated Pre-Construction Fee. Pepper Lawson (PLW) estimated approximately 8,104 man/hours at an average rate of $89.95 dollars per hour totaling $728,960.00. Part Two requested provision of a Construction Phase Services Fee expressed as a percentage of the cost of construction based on an estimated $60 million-dollar construction cost. PLW proposed a fee of 4.85% and is in line with other City CMAR projects. PLW performed very well on the Reflection Bay Water Reclamation plant project developing a $400,000 cost savings option in the first weeks of construction. Additionally, when one of their sub-contractors made a mistake that required a re-design effort by the Engineer of Record, Pepper Lawson paid for the additional work, no questions asked. This project was delivered almost six months ahead of schedule and well within budget.
Recommendation
On November 25th, Staff will bring the final negotiated CMAR contract for the JHEC Wastewater Treatment Plant Expansion to Council with the recommendation to approve the selection process and award the contract for Pre-Construction services to PLW Waterworks in the Lump Sum amount of $728,960. The Agenda Request will provide the full scope of work included and the proposed schedule of values for the contract. A notice to Proceed would be issued immediately and the CMAR will begin work with Ardurra Group, the designer for the plant.
October
- Design, Design Contracts, Contracts, RFPs, Reports
- Final Design contract awarded to Ardurra Group at the March 4 City Council meeting
- Project Kickoff Meeting for final design held on April 9
- Staff prepared CMAR Request for Proposal, advertised on September 11.
- Submitted 30% design package, including Design Criteria Memos for all process areas, Design Drawings, and Specification table of contents
- Geotechnical REport Addendum reviewed and finalized with 30% design submittal.
- Site planning
- IT/SCADA Workshop conducted June 20
- Topics of discussion included:
- Facility Connectivity and overall SCADA Network
- Cybersecurity and separate networks
- Server room design
- Telecommunications
- Office features and site security
- Public Safety Building set as main hub for SCADA servers for all City Infrastructure Facilities
- SCADA setup for John Hargrove (JHEC) and Bailey Road (BRWRF) water reclamation facilities and Surface Water Treatment Plant will be designed to be similar to the Reflection Bay Water Reclamation Facility
- JHEC, BRWRF, and SWTP to be connected to the PSB via dedicated fiber optic cable lines
- Topics of discussion included:
- Began development of Operations Building Layout for site
- Completed 30-day odor testing for Influent Lift Systems and Headworks to determine odor control required for the site.
- Developed updated JHEC WRF site plan based on revised locations of Headworks and Operations Building stemming from staff review of overall site plan to better improve efficiencies.
- Geotechnical field work (borings) were performed on June 6, 2019 to evaluate the foundation recommendations for the proposed SBR and Headworks structures.
- Public Works and Capital Projects staff and consultants for Barry Rose and JHECWRF projects made a site visit to the new membrane bioreactor (MBR) waste water treatment plant in TRophy Club, TX.
- Headworks screens proposed for use at JHEC are similar to the the ones in the Trophy Club facility
- Decision made to retain the same Sequential Batch Reactor treatment process for this expansion instead of changed to MBR technology
- Plant will be designed so that if the City chooses to transition to MBR technology, the necessary equipment can be retrofitted to newly built structures
- IT/SCADA Workshop conducted June 20
- Upcoming Work Items
- CMAR advertisement and selection process
o 1st Advertisement – September 11, 2019
o 2nd Advertisement – September 18, 2019 - Pre-proposal conference & Site Visit – September 25, 2019
- Proposals Due – October 17, 2019
- Prospective CMAR Interviews – November 2019
- CMAR Contract Award – December 2019
- Complete 30% plan review
- CMAR advertisement and selection process
May
Summary
- 2017 JHEC Preliminary Engineering Report
- The JHEC Water Reclamation Facility (JHWRF) Preliminary Engineering Report (PER) submitted in January 2017
- Recommended a 5 million gallon per day (MGD) expansion to a total of 9 MGD
(4 MGD existing plus 5 MGD expansion) for the “Intermediate” (10 year) design- Intermediate design based on the additional flows anticipated from growth and the inclusion of MUDs 2, 3 and 6.
- If annexation of all outlying areas located in the Extraterritorial Jurisdiction (ETJ) were to occur, the “Ultimate” service area build-out expansion flows were projected to reach 11 MGD.
- The PER work was completed before Senate Bill 6 passed in 2017 limiting the City’s ability to annex unincorporated.
- 2018 Technical Memorandum Amendment
- finalized September 2018
- Amendment required due to passing of Senate Bill 6
- limited the City's ability to annex unincorporated areas
- as such, the Ultimate 11 MGD plant capacity is greatly reduced due to current unlikelihood of future annexations
- revised expansion recommendations for the 10-year planing period, City Limit build-out, and Ultimate build-out capacities
- Revised recommendations serve as basis of design
- expand the plant ONLY by 2 MGD to a total capacity of 6 MGD for the Intermediate design
- 8 MGD for the City Liit build-out service area
- the 6 MGD capacity will be adequate to meet current growth requirements for the 10 year planning period and 8 MGD capacity for the City Limit build-out capacity requirements, assuming no annexation of large areas currently outside of the existing city limits.
- expand the plant ONLY by 2 MGD to a total capacity of 6 MGD for the Intermediate design
- Planning for Future Expansion
- The current planned expansion will provide additional pumping capacity in the influent lift station, additional treatment capacity in the plant, additional tertiary filter capacity and additional UV disinfection for 6 MGD.
- Plant piping in this expansion would be extended to the final expansion location for 8MGD. The expansion to 6MGD requires new blowers, expansion of the blower building, additional electrical supply and control, additional sludge handling capabilities as well as expansion of the buildings and structures housing these operations.
- 8 MGD Expansion
- In all cases, current processes are planned to allow for an expansion to the 8 MGD City Limit capacity requirements to avoid the expense of a full plant expansion in the future.
- This same philosophy has been applied to the planned aerated sludge holding tanks, the non-potable water system and relocation of the Centerpoint Energy electrical service for the site.
February
- Preparation for expansion of JHEC WRF
- Background
- JHEC constructed in 1998 to treat 2 MGD average daily flow
- Laid out ultimate expansion of 8 MGD ADF
- Current
- Flow data indicates planning for plant expansion
- Preliminary Engineering Report (2017)
- Study updated the JHEC WRF collection basic flow model to include Longwood basic and the Brazoria County Municipal Utility Districts (BCMUD) 2,3 and 6 services area
- necessary to determine the plant capacity for the 10-year ultimate build-out scenario
- Senate Bill 6
- City's ability to annex unincorporated areas was limited resulting in the reduction of required design capacity for the 10 year planning period
- greatly reduced the originally anticipated expansion of 5 MGD to 2 MGD
- Study updated the JHEC WRF collection basic flow model to include Longwood basic and the Brazoria County Municipal Utility Districts (BCMUD) 2,3 and 6 services area
- Technical Memorandum Amendment
- expand plant by 2 MGD to a total capacity of 6 MGD to meet the 10 year requirement
- will assist with operational continuity and improve facility operation
- existing 4 MGD will be rehabilitated and new structures and systems are proposed in the design
- Scope
- Ardurra will provide support services through the bidding phase up to providing the Letter of Recommendation to Council
- Construction phase services are not included at this time
- will be added as an amendment once design is complete
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Basic Services Task 1 Project Management and Coordination Task 2 Final Design Phase Services Task 3 Bid Phase Services Additional Services Task 4 Additional Topographic Survey Task 5 Additional Geotechnical Investigation Task 6 Influent Lift Station Physical Model
- Background