D2 - Wastewater CIP Update — original pdf

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Wastewater CIP Update Shay Ralls Roalson, PE, Charles Celauro, PE, and Kevin Koeller, PE May 6, 2020 5 Year Capital Improvement Plan (by funding category) Facility Engineering Wastewater CIP FY 2020 Wastewater Treatment and Lift Station Major CIP Projects SPID 3333.017 PROJECT 3023.046 Walnut Creek WWTP Expansion to 100 Million Gallons Per Day FY21-25 $68,150,000 * $57,037,553 * $26,913,187 * $25,200,000 * 3023.039 Walnut Creek Wastewater Treatment Plant Secondary Process Improvements $23,124,480 3023.019 Walnut Creek Wastewater Treatment Plant Headworks Improvements South Austin Regional WWTP Electrical Substation No.1 Replacement South Austin Regional WWTP Trains A & B Improvements 3333.032 7265.040 Brushy Creek Regional Wastewater Treatment Plant Expansion Participation $20,677,800 7265.004 Wild Horse Ranch Wastewater Treatment Plant Expansion 3164.070 Hornsby Bend Transfer Pump Station and Irrigation System Improvements 3023.022 Walnut Creek Wastewater Treatment Plant Pumping System Improvements $12,212,654 3023.035 Walnut Creek Wastewater Treatment Plant Sludge Thickener Rehab $9,416,445 10 $17,941,913 * $13,240,000 $273,914,032 Rank 1 2 3 4 5 6 7 8 9 Expansion Projects ($106,769,713) Construction Projects ($92,344,566) *Have capital cost beyond the FY21-25 CIP Budget Facility Engineering Wastewater CIP FY 2020 Walnut Creek WWTP 100 MGD Expansion  Capacity:  Existing Capacity = 75 MGD  Capacity after Expansion = 100 MGD  Capital Cost:  FY21-25 Spending Plan is $68,150,000 *  Total Project Contribution Cost is $297 Million ^ ^ Cost may rise due to Atlas 14 and Permitting  Project Milestones:  RFQ Solicitation Due Date: April 22, 2020  Preliminary and Final Design: 2024  Construction NTP: 2024  Substantial Completion: 2028  RCA Commission Actions:  July 15, 2020 – RFQ Engineering Selection Facility Engineering Wastewater CIP FY 2020 East Brushy Creek WWTP 30 MGD Expansion  WWTP is owned by Brushy Creek Regional Wastewater System which is a joint regional facility between the cities of Round Rock, Cedar Park, Leander* and Austin and operated by city of Round Rock.  Capacity:  Existing Capacity = 20 MGD  Capacity after Expansion = 30 MGD  Ownership:  Existing CoA ownership is 3.43% (0.69 MGD)  After expansion CoA ownership will be 9.87% (3.26 MGD)  Project Milestones:  Bid Date: February 13, 2020  Construction NTP: May 2020  Substantial Completion May 2023  Capital Cost:  RCA Commission Actions:  April 8, 2020 – Supplemental Agreement for Cost Participation  FY20 Spending Plan is $6,892,600  FY21-25 Spending Plan is $21,171,600  Future: Amendment to agreement for Leander to become a wholesale customer of Round Rock Facility Engineering Wastewater CIP FY 2020 Wild Horse WWTP 1.50 MGD Expansion Hornsby Bend Transfer Pump Station and Irrigation System Improvements  Capital Cost:  FY20 Spending Plan is $230,000  FY21-25 Spending Plan is $13,240,000  Project Milestones:  Final Design: June 2020  Construction NTP: December 2020  Substantial Completion July 2022  RCA Commission Actions:  October 2020 - Construction Contract  Capacity:  Existing Capacity = 0.75 MGD  Capacity after Expansion = 1.50 MGD (2.25 MGD Design)  Capital Cost:  FY20 Spending Plan is $1,179,391  FY21-25 Spending Plan is $17,941,913 *  Project Milestones:  Final Design: July 2021  Construction NTP: January 2022  Substantial Completion: January 2025  RCA Commission Actions:  2022 - Construction Contract & Construction Engineering Services Facility Engineering Wastewater CIP FY 2020 South Austin Regional WWTP Trains A & B Improvements South Austin Regional WWTP Electrical Substation No.1 Replacement  Capital Cost:  FY20 Spending Plan is $472,618  FY21-25 Spending Plan is $26,913,187 *  Project Milestones:  Construction NTP: June 2020  Substantial Completion September 2023  RCA Commission Actions:  April 8, 2020 - Construction Contract & Construction Engineering Services  Capital Cost:  FY20 Spending Plan is $1,960,362  FY21-25 Spending Plan is $57,037,553 *  Project Milestones:  Final Design: December 2020  Construction NTP: July 2021  Substantial Completion July 2025  RCA Commission Actions:  2021 - Construction Contract & Construction Engineering Services Facility Engineering Wastewater CIP FY 2020 Walnut Creek Wastewater Treatment Plant Headworks Improvements Walnut Creek Wastewater Treatment Plant Secondary Process Improvements  Capital Cost:  FY20 Spending Plan is $5,097,391  FY21-25 Spending Plan is $23,124,480  Project Milestones:  Construction NTP: December 2019  Substantial Completion: January 2022  RCA Commission Actions:  TBD  Capital Cost:  FY20 Spending Plan is $330,000  FY21-25 Spending Plan is $25,200,000 *  Project Milestones:  Preliminary Design: June 2021  Final Design: January 2023  Construction NTP: July 2023  Substantial Completion July 2026  RCA Commission Actions:  2021 – Final Design Facility Engineering Wastewater CIP FY 2020 Walnut Creek Wastewater Treatment Plant Walnut Creek Wastewater Treatment Plant Pumping System Improvements Sludge Thickener Rehabilitation  Capital Cost:  FY20 Spending Plan is $2,833,865  FY21-25 Spending Plan is $9,416,445  Project Milestones:  Construction NTP: April 2020  Substantial Completion: December 2021  RCA Commission Actions:  January 8, 2020 - Construction Contract  Capital Cost:  FY20 Spending Plan is $3,195,583  FY21-25 Spending Plan is $12,212,654  Project Milestones:  Construction NTP: June 2020  Substantial Completion June 2022  RCA Commission Actions:  March 11, 2020 - Construction Contract Collection System Engineering CIP FY 2020 Wastewater Collection System and Rehabilitation Major CIP Projects SPID PROJECT 6943.031 Williamson Creek Wastewater Interceptor 4769.011 Upper Harris Branch Wastewater Improvements 2231.301 Wastewater Line Renewal And Spot Rehab Service Contract (2020 to 2022) 2231.234 Rosedale/Lawnmont Avenue Water and Wastewater Pipeline Renewal 2231.238 North Tarrytown Water and Wastewater Pipeline Renewal 6943.025 Boggy Creek Lift Station Force Main Extension 2231.233 Brentwood Water and Wastewater Pipeline Renewal: Arcadia Avenue Area 6943.004 Parmer Lane Interceptor 6943.045 Upper Boggy West Wastewater Line Improvements - Phase 1 2231.307 Rosedale North Water and Wastewater Pipeline Renewal Phase 2 6943.056 Upper Tannehill Wastewater Interceptor Improvements Phase 1:Morris Williams $3,400,000* $3,213,000* $108,091,529 2231.236 Morrow and Gault Water & Wastewater Pipeline Renewal Expansion Projects ($73,741,031) Construction Projects ($10,216,043) *Have capital cost beyond the FY21-25 CIP Budget FY21-25 $56,160,000* $6,089,487* $5,695,000 $5,366,200* $5,297,478 $5,263,803* $5,248,501 $4,521,043 $3,964,988* $3,872,029 Rank 1 2 3 4 5 6 7 8 9 10 11 12 Collection System Engineering CIP FY 2020 Williamson Creek Wastewater Interceptor  Purpose:  Replace 60 year-old infrastructure in creek Two downstream segments to be CIPP-lined due to condition assessment Insufficient capacity to handle wet weather events – since late 1990s o o  Improve infrastructure stability o Need for project is driven by capacity AND condition issues  Project Scope: Williamson Creek  18,000 LF of new 66-inch and 72-inch diameter gravity interceptor along/near  Flow will be diverted from the existing interceptor into the new interceptor to abandon as much of the existing interceptor as possible  TWDB Funding (CWSRF)  Capital Cost:  FY20 Spending Plan is $1,030,000  FY21-25 Spending Plan is $56,160,000  Total Project Cost is $64.M  Project Milestones:  Construction NTP May 2022  Substantial Completion 2026 Collection System Engineering CIP FY 2020 Upper Harris Branch Wastewater Improvements Dessau WWTP  Project: demand constructed  Rapid development and growth causing increased wastewater service  Diminishing available real estate that will allow interceptor to be  Interceptor will save utility construction and operations and maintenance costs by preventing expansion of Dessau WWTP to over 1 MGD capacity as predicted by 2032  Project Specs:  23,000 LF of 30- and 36-inch gravity wastewater interceptor  Capital Cost:  FY20 Spending Plan is $223,376  FY21-25 Spending Plan is $6,089,487  Total Project Cost is $26.8M  Project Milestones:  Construction NTP 2023 to 2024  Substantial Completion 2027 to 2028 Collection System Engineering CIP FY 2020 Brentwood Water and Wastewater Pipeline Renewal: Arcadia Avenue Area  Project:  8,914 LF of wastewater footage rehabilitated or replaced and water system renewal of 9,544 LF of water line  Project Bid:  Santa Clara Construction, Ltd.  Approved at Water and Wastewater Commission Meeting March 11, 2020  Capital Cost:  FY20 Spending Plan is $413,500  FY21-25 Spending Plan is $5,248,501  Total Project Cost is $6.6M  Project Milestones:  Construction NTP May 2020  Substantial Completion 2022 Collection System Engineering CIP FY 2020 Parmer Lane Interceptor Wastewater Improvements Plan  Project:  12,000 LF of 8 foot diameter tunnel enclosed 42 inch wastewater gravity interceptor ‐ ‐  From North Walnut Creek, on the east side of Parmer Lane to Lake Creek on the west side of Parmer Lane  Interceptor will be installed via tunnel methods and will be installed between 15 and 80 feet below grade  Rattan Creek and Lake Creek Lift Stations and associated ‐ forcemains/gravity mains will be decommissioned and demolished  Existing flows will be bypassed to the proposed interceptor at completion of the project  Capital Cost:  FY20 Spending Plan is $8,927,391  FY21-25 Spending Plan is $4,521,043  Total Project Cost is $37M  Project Milestones:  Construction began March 2017  Substantial Completion September 2020 Collection System Engineering CIP FY 2020 Morrow and Gault Water and Wastewater Pipeline Renewal  Project:  Replacement, lining, and spot repair of deteriorated water and wastewater segments  System improvements to approximately 1,150 LF of water and 15,850 LF of wastewater line  Capital Cost:  FY20 Spending Plan is $70,000  FY21-25 Spending Plan is $3,213,000  Total Project Cost is $5.7M  Project Milestones:  Bid Summer 2020  Construction NTP Fall 2020  Substantial Completion 2022 Collection System Engineering CIP FY 2020 Indefinite Delivery Indefinite Quantity Contracts  Current List of IDIQ Projects in Construction:  Relay and Spot Repair IDIQ FY2020-FY2022 (2231.301) – Construction continues at multiple locations.  CIPP IDIQ FY2019-FY2021 (2231.314) – TV inspection and lining work is underway at 10 to 12 site locations  Manhole Rehab IDIQ FY2019-FY2023 (2231.354) – Work is under way. Two assignments have been issued.