Jason Warren, PE

Replacement and installation of approximately 96,000 LF of 4-to 8-inch water main in the Harbour Heights residential community, located on the East side of the Charlotte Harbor Water Association’s service area. Proposed water mains will be installed primarily by open-cut trenching but also horizontal direction drilling to minimize restoration and disturbance to the residential area. Due to a large quantity of gopher tortoise burrows surveyed during the preliminary design and U.S. Fish and… Show more

Replacement and installation of approximately 96,000 LF of 4-to 8-inch water main in the Harbour Heights residential community, located on the East side of the Charlotte Harbor Water Association’s service area. Proposed water mains will be installed primarily by open-cut trenching but also horizontal direction drilling to minimize restoration and disturbance to the residential area. Due to a large quantity of gopher tortoise burrows surveyed during the preliminary design and U.S. Fish and Wildlife Services regulations, the project team sequenced construction in order to both expedite construction and also minimize environmental impact. The project included preliminary and final design, permitting, bidding assistance, and construction administration services. Mr. Warren provided technical assistance during the preliminary and final design phases related to hydraulic modelling and pipeline design.
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Rehabilitation of four existing duplex lift stations ranging in capacity from 150 gpm to 400 gpm. Services include preliminary engineering, final design, permitting, bidding and construction administration. Mr. Warren serves as the project manager.

The project includes installation of approximately 4,400 feet of 12-inch water main through open cut and horizontal direction drilling to connect the distribution system from Lake of the Woods Boulevard to East Altamonte Drive. The project corridor begins at a 10-inch water main along Lake of the Woods Boulevard and runs west towards U.S. 17-92, north along U.S. 17-92, west along Prairie Lake Drive, and north along Wells Avenue to connect to existing 12-inch water main near the intersection at… Show more

The project includes installation of approximately 4,400 feet of 12-inch water main through open cut and horizontal direction drilling to connect the distribution system from Lake of the Woods Boulevard to East Altamonte Drive. The project corridor begins at a 10-inch water main along Lake of the Woods Boulevard and runs west towards U.S. 17-92, north along U.S. 17-92, west along Prairie Lake Drive, and north along Wells Avenue to connect to existing 12-inch water main near the intersection at East Altamonte Drive. Tetra Tech is providing preliminary design, surveying, contamination investigation services, subsurface utility designation and verification, geotechnical services, final design, permitting, bidding assistance, and construction administration. Mr. Warren serves as the project manager.
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Project included a covered/enclosed 76,000 SF facility that is climate controlled, chemically balanced, temperate, ventilated, and has varying depths body of water used for training the US Air Force. Tetra Tech as a team with outside pool consultant Counsilman-Hunsaker, collaborated with staff and command of the Special Warfare Training Group (SWTG) at Lackland, JBSA, AFCEC, and USACE Fort Worth District from program verification and design charrette, through construction documents development… Show more

Project included a covered/enclosed 76,000 SF facility that is climate controlled, chemically balanced, temperate, ventilated, and has varying depths body of water used for training the US Air Force. Tetra Tech as a team with outside pool consultant Counsilman-Hunsaker, collaborated with staff and command of the Special Warfare Training Group (SWTG) at Lackland, JBSA, AFCEC, and USACE Fort Worth District from program verification and design charrette, through construction documents development and ultimately through bidding, award and construction. Tetra Tech performed civil, structural, architecture, mechanical, commissioning, fire protection, electrical, communications, and cost estimating services. Mr Warren was responsible for design of the wastewater system including gravity piping and lift station. Show less

Evaluation of a proposed interconnect between the City of Lakeland, City of Bartow, and Polk County Utilities for emergency water transfers between each system for enhanced reliability. The evaluation included a hydraulic review of each utility’s potable water hydraulic model and the development of a combined hydraulic model to evaluate the amount of water that can be transferred between systems and determine the infrastructure requirements for providing an emergency interconnect. The project… Show more

Evaluation of a proposed interconnect between the City of Lakeland, City of Bartow, and Polk County Utilities for emergency water transfers between each system for enhanced reliability. The evaluation included a hydraulic review of each utility’s potable water hydraulic model and the development of a combined hydraulic model to evaluate the amount of water that can be transferred between systems and determine the infrastructure requirements for providing an emergency interconnect. The project also included a water quality evaluation to determine if the compatibility of the water sources. The water quality evaluation included the review of historical water quality from each utility as well as the development of a sampling plan for sampling key parameters in each system near the proposed interconnect site. Evaluated available parcels for potential sites for the interconnect in the vicinity of where three water systems service areas converge. The project included a report summarizing the results with a conceptual site plan and engineer’s opinion or probable construction cost. Mr. Warren served as the lead hydraulic engineer. Show less

Orange County Utilities (OCU) owns and maintains 1,340 miles of gravity mains. OCU requested the services of Tetra Tech to perform construction administration of their rehabilitation and replacement program for their gravity sewer system in areas previously identified for upgrades. The upgrades included CIPP lining of approximately 61,500 linear feet of gravity sewer sizes 8- to 30-inch and manhole lining of approximately 300 vertical feet. Mr. Warren serves as the Project Manager and is… Show more

Orange County Utilities (OCU) owns and maintains 1,340 miles of gravity mains. OCU requested the services of Tetra Tech to perform construction administration of their rehabilitation and replacement program for their gravity sewer system in areas previously identified for upgrades. The upgrades included CIPP lining of approximately 61,500 linear feet of gravity sewer sizes 8- to 30-inch and manhole lining of approximately 300 vertical feet. Mr. Warren serves as the Project Manager and is responsible for ensuring the contractor complies with the contract documents and completes construction on schedule. Show less

Project Manager for the rehabilitation of two (2) existing duplex pump stations and two (2) existing master pump stations within the County’s South service area to update the facilities to meet current OCU standards. Operating design flows of the stations ranged from 100 to 15,000 gpm. The project requires civil, structural, mechanical and electrical upgrades and includes preliminary design, final design, bidding, permitting, community outreach and construction phase services. Mr. Warren… Show more

Project Manager for the rehabilitation of two (2) existing duplex pump stations and two (2) existing master pump stations within the County’s South service area to update the facilities to meet current OCU standards. Operating design flows of the stations ranged from 100 to 15,000 gpm. The project requires civil, structural, mechanical and electrical upgrades and includes preliminary design, final design, bidding, permitting, community outreach and construction phase services. Mr. Warren acted as the Project Manager and Engineer-of-Record for the project. Show less

Project Manager for the rehabilitation of four (4) existing duplex pump stations within the County’s South service area to update the facilities to meet current OCU standards. Operating design flows of the stations ranged from 150 to 500 gpm. The project requires civil, mechanical and electrical upgrades and includes final design, bidding, permitting, community outreach and construction phase services. Mr. Warren acted as the Project Manager and Engineer-of-Record for the project.

Project Manager for the rehabilitation of three (3) existing duplex pump stations within the County’s South service area to update the facilities to meet current OCU standards. Operating design flows of the stations ranged from 300 to 750 gpm. The project requires civil, structural, mechanical and electrical upgrades and includes final design, bidding, permitting, community outreach and construction phase services. Mr. Warren acted as the Project Manager and Engineer-of-Record for the… Show more

Project Manager for the rehabilitation of three (3) existing duplex pump stations within the County’s South service area to update the facilities to meet current OCU standards. Operating design flows of the stations ranged from 300 to 750 gpm. The project requires civil, structural, mechanical and electrical upgrades and includes final design, bidding, permitting, community outreach and construction phase services. Mr. Warren acted as the Project Manager and Engineer-of-Record for the project.
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Project Manager for the preliminary engineering design for the rehabilitation of existing Master Universal Pump Station within the County’s South service area to update the facilities to meet current OCU standards. Operating design flow for future conditions is estimated at 14,000 gpm. The project requires civil, structural, mechanical and electrical upgrades and preliminary engineering services. Mr. Warren acted as the Project Manager and Engineer-of-Record for the project.

Tetra Tech is providing preliminary engineering, final design, permitting, bid assistance and construction administration for the replacement of the force mains between Lift Station 139 and Boggy Creek Road. The project includes approximately 5,400 LF of 24-inch force main to be installed within an easement. The project includes open cut of herbaceous wetlands and coordination with other utility owners who share access to the easement. Mr. Warren is the Project Manager and is responsible for… Show more

Tetra Tech is providing preliminary engineering, final design, permitting, bid assistance and construction administration for the replacement of the force mains between Lift Station 139 and Boggy Creek Road. The project includes approximately 5,400 LF of 24-inch force main to be installed within an easement. The project includes open cut of herbaceous wetlands and coordination with other utility owners who share access to the easement. Mr. Warren is the Project Manager and is responsible for design and coordination efforts.
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. Reedy Creek Improvement District (RCID) owns a 20.0 MGD wastewater treatment plant (WWTP) which utilizes a 5-stage Bardenpho process for biological nutrient removal (BNR). The BNR process is set-up to operate in four parallel trains. The equipment within the BNR structure is over 20 years old and in need of replacement. RCID contracted with Tetra Tech to perform preliminary engineering, final design, bidding assistance and construction administration for the BNR Train 4 rehabilitation. This… Show more

. Reedy Creek Improvement District (RCID) owns a 20.0 MGD wastewater treatment plant (WWTP) which utilizes a 5-stage Bardenpho process for biological nutrient removal (BNR). The BNR process is set-up to operate in four parallel trains. The equipment within the BNR structure is over 20 years old and in need of replacement. RCID contracted with Tetra Tech to perform preliminary engineering, final design, bidding assistance and construction administration for the BNR Train 4 rehabilitation. This included an equipment evaluation of available diffuser and mixer technologies, a recommendation for equipment replacement including diffusers, mixers, gates, mud valves and stop logs, and production of contract documents. Mr. Warren serves as the project manager. Show less

Evaluation of existing water system including available water supply and historical demands, twenty-year population and flow projections, and capacity analysis of existing wells, pumps, and storage facilities. The project also involves a hydraulic modeling analysis, capital improvements program, and rate review. Mr. Warren provided technical assistance related to hydraulic modeling development, calibration and fireflow analysis.

The City Trunk Line North Unit 2, consists of 12,200 linear feet of new 54-inch diameter welded steel pipe. The design includes three bore and jack tunnels and 3,500 linear feet of slip-lining, where new 54-inch steel pipe will be pushed through an existing 72-inch riveted steel pipeline. The project requires the preparation of plans, specifications, and construction cost estimates. Mr. Warren was responsible for the transient analysis of the conveyance system and valve selection.

Project consists of treatment facilities, conveyance pipelines, and improvements to existing pump stations and distribution facilities to integrate a new 48.0 MGD potable water supply source into the utility’s potable water distribution system. The supply source for this project consisted of a $900 million P3 water supply project that will import groundwater from a wellfield that is 140 miles from the City of San Antonio. The designed treatment facilities include pressurized solution injection… Show more

Project consists of treatment facilities, conveyance pipelines, and improvements to existing pump stations and distribution facilities to integrate a new 48.0 MGD potable water supply source into the utility’s potable water distribution system. The supply source for this project consisted of a $900 million P3 water supply project that will import groundwater from a wellfield that is 140 miles from the City of San Antonio. The designed treatment facilities include pressurized solution injection of carbon dioxide for pH adjustment, lime storage and batch slaking, lime saturators (solids contactors) for calcium remineralization, dual media pressure filters, a sodium hypochlorite on-site generation system, fluoride storage and feed, backwash recovery, filtered solids and lime sludge gravity thickener, sludge handling and dewatering using centrifuges, and associated polymer storage and feed systems. Mr. Warren was responsible for the transient analysis of the conveyance system and developing operational control requirements for the conveyance control valves.
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QA/QC Reviewer. Tetra Tech contracted with the San Antonio Water System (SAWS) to facilitate pump station improvements at their Anderson, Old Pearsall and H2Oaks facilities. The Water Resources Integration Project (WRIP) Project included numerous upgrades including new pumping configurations and surge tanks. Mr. Warren was responsible for performing the quality assurance review of the transient analysis performed by the project team. Computer modeling of transient event scenarios was… Show more

QA/QC Reviewer. Tetra Tech contracted with the San Antonio Water System (SAWS) to facilitate pump station improvements at their Anderson, Old Pearsall and H2Oaks facilities. The Water Resources Integration Project (WRIP) Project included numerous upgrades including new pumping configurations and surge tanks. Mr. Warren was responsible for performing the quality assurance review of the transient analysis performed by the project team. Computer modeling of transient event scenarios was performed using Synergi Pipeline Simulator, a stand alone DNVGL simulation program
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The City of Conroe selected Lockwood, Andrews and Newnam, Inc. (LAN) to perform the professional engineering tasks in association with the final design of a new wastewater treatment plant (WWTP). The new WWTP primarily serves the east side of Conroe and is designed to an ultimate capacity of 12 MGD. Design and construction has been broken into three phases with the first phase of the WWTP having a design capacity of 6 MGD. The estimated construction cost of the first phase is $49.0 million. Mr.… Show more

The City of Conroe selected Lockwood, Andrews and Newnam, Inc. (LAN) to perform the professional engineering tasks in association with the final design of a new wastewater treatment plant (WWTP). The new WWTP primarily serves the east side of Conroe and is designed to an ultimate capacity of 12 MGD. Design and construction has been broken into three phases with the first phase of the WWTP having a design capacity of 6 MGD. The estimated construction cost of the first phase is $49.0 million. Mr. Warren served as a Project Engineer focusing on the sludge processing process design. Design tasks included sludge pumping, thickening, dewatering and polymer feed relevant to the aforementioned processes. Show less

Jason served as a transient modeler for approximately 6,570 LF of 108-inch waterline, 400 LF of 42-inch waterline, valves, and appurtenances in Harris County and the City of Houston. The evaluation included different waterline sizes and operating pressures to determine the best solution to meet the anticipated water demand in the most cost effective manner which conforms to the City’s operational requirements. The improvements included in this project will decrease the City’s and County’s… Show more

Jason served as a transient modeler for approximately 6,570 LF of 108-inch waterline, 400 LF of 42-inch waterline, valves, and appurtenances in Harris County and the City of Houston. The evaluation included different waterline sizes and operating pressures to determine the best solution to meet the anticipated water demand in the most cost effective manner which conforms to the City’s operational requirements. The improvements included in this project will decrease the City’s and County’s reliance on groundwater and prevent subsidence. Along with meeting the projected water demand of the served population, it will also provide a redundant source of water to the George Bush Intercontinental Airport and to North Harris County. Show less

Jason performed transient analysis for 7,400 linear feet of 60-inch waterline from Airport Boulevard to Glen Valley Drive. The pipeline will tie-in to a future 60-inch waterline and will require two tunnels for road crossing and Harris County Flood Control District crossing. The connection will provide an additional tie-in for the City’s Southeast Water Purification Plant (SEWPP) to supply surface water to the south and west portions of the City. The transient analysis required modeling the… Show more

Jason performed transient analysis for 7,400 linear feet of 60-inch waterline from Airport Boulevard to Glen Valley Drive. The pipeline will tie-in to a future 60-inch waterline and will require two tunnels for road crossing and Harris County Flood Control District crossing. The connection will provide an additional tie-in for the City’s Southeast Water Purification Plant (SEWPP) to supply surface water to the south and west portions of the City. The transient analysis required modeling the effects of system failures at both the City’s East Water Purification Plant (EWPP) and SEWPP due to the future connection. The information was used to evaluate the proposed surge protection devices and determine any additional surge protection requirements. Show less

Jason performed transient analysis for 8,500 linear feet of 60-inch waterline from Rockhill Street to Dixie Street. The pipeline will connect a proposed 60-inch waterline to an existing 66-inch waterline and will require three tunnels; two for road crossings and another for a Harris County Flood Control District Sims Bayou crossing. The connection will provide an additional tie-in for the City’s Southeast Water Purification Plant (SEWPP) to supply surface water to the south and west portions of… Show more

Jason performed transient analysis for 8,500 linear feet of 60-inch waterline from Rockhill Street to Dixie Street. The pipeline will connect a proposed 60-inch waterline to an existing 66-inch waterline and will require three tunnels; two for road crossings and another for a Harris County Flood Control District Sims Bayou crossing. The connection will provide an additional tie-in for the City’s Southeast Water Purification Plant (SEWPP) to supply surface water to the south and west portions of the City. The transient analysis required modeling the effects of system failures at both the City’s East Water Purification Plant (EWPP) and SEWPP due to the future connection. The information was used to evaluate the proposed surge protection devices and determine any additional surge protection requirements. Show less

As part of the City of Houston’s Surface Water Transmission Program (SWTP), LAN was retained to prepare a final Basis of Design Report and prepare design documents for the construction of raw water piping direct connections to Low Lift Pump Station (LLPS) Nos. 1 and 2 at Plants 1 and 2, respectively, of the City of Houston’s East Water Purification Plant (EWPP). These improvements allow raw water from the Coastal Water Authority’s (CWA) “B” and “C” systems to be conveyed directly to the… Show more

As part of the City of Houston’s Surface Water Transmission Program (SWTP), LAN was retained to prepare a final Basis of Design Report and prepare design documents for the construction of raw water piping direct connections to Low Lift Pump Station (LLPS) Nos. 1 and 2 at Plants 1 and 2, respectively, of the City of Houston’s East Water Purification Plant (EWPP). These improvements allow raw water from the Coastal Water Authority’s (CWA) “B” and “C” systems to be conveyed directly to the discharge headboxes of LLPS Nos. 1 and 2 for direct feed to Plants 1 and 2, thereby, eliminating the need to first flow through the existing forebay followed by influent pumping to the plants. Pressure regulating stations (PRS) for both CWA and the City were required to control flow and pressure from the CWA “B” and “C” systems to LLPS No.1 and LLPS No. 2.

LAN reviewed the recommendations made in previous studies and reports, performed a hydraulic model analysis to confirm flows and pressures, made final recommendations for the connections to the CWA “B” and “C” systems, sizing of control valves and location of the CWA and City PRS’s, pipeline alignments, and direct connections to the LLPS. Final design documents were prepared based on the recommendations included in the Basis of Design Report technical memoranda. Due to the extensive existing underground utilities and process piping around the LLPS’s, careful consideration of pipeline alignments, PRS locations, construction methods, interruption to facility operations, and risk were given high importance and drove the design.

As Project Engineer, Mr. Warren performed the transient analysis for the existing and proposed systems, including the selection of optimal flow control valves.
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Mr. Warren served as Project Engineer for the direct connection piping design to the Low Lift Pump Stations at the City’s East Water Purification Plant. The piping and connections will convey raw water from the Coastal Water Authority’s “B” and “C” systems to the discharge boxes for Low Lift Pump Stations #1 and #2 at Plats #1 and #2 at the EWPP. This will allow the City to obtain raw water from a single source without having to pump into the downstream treatment processes. The project consists… Show more

Mr. Warren served as Project Engineer for the direct connection piping design to the Low Lift Pump Stations at the City’s East Water Purification Plant. The piping and connections will convey raw water from the Coastal Water Authority’s “B” and “C” systems to the discharge boxes for Low Lift Pump Stations #1 and #2 at Plats #1 and #2 at the EWPP. This will allow the City to obtain raw water from a single source without having to pump into the downstream treatment processes. The project consists of sections of 36-inch, 42-inch, 48-inch, 54-inch, 60-inch and 84-inch water line for transporting raw water from CWA’s “B” and “C” Lines to the LLPSs at Plants 1 & 2 at the EWPP. The project includes concrete vaults with flow control valves for both the City and CWA; direct connection piping to each LLPS discharge box; two prefabricated concrete buildings; and electrical, SCADA, and instrumentation improvements. Project limits extend from the southern end of the EWPP to approximately 40 feet north of LLPS No. 2 at Plant 2. Mr. Warren performed the transient analysis for the existing and proposed systems, including the selection of optimal flow control valves. Show less

Lockwood, Andrews & Newnam was selected to evaluate the City of Houston’s Southeast Water Purification Plant (SEWPP) discharge header piping and the City of Pasadena’s new SEWPP metering station and proposed 36-inch water line to the Crenshaw Pump Station ground storage tank (Crenshaw GST). The purpose of the evaluation was to identify any impacts to the SEWPP due to operations of the Crenshaw GST flow control valve or to the Pasadena metering station and water line during a shutdown of the… Show more

Lockwood, Andrews & Newnam was selected to evaluate the City of Houston’s Southeast Water Purification Plant (SEWPP) discharge header piping and the City of Pasadena’s new SEWPP metering station and proposed 36-inch water line to the Crenshaw Pump Station ground storage tank (Crenshaw GST). The purpose of the evaluation was to identify any impacts to the SEWPP due to operations of the Crenshaw GST flow control valve or to the Pasadena metering station and water line during a shutdown of the firm pumping capacity at the SEWPP. Recommendations to minimize and / or mitigate impacts of either scenario were provided in the form of a technical memorandum. Mr. Warren served as the hydraulic engineer for the project. His responsibilities included data collection, transient analysis using the LIQT software and composition of the technical memorandum. Show less

LAN was contracted by the City of Conroe for Phase I, II and III preliminary engineering, design, and construction phase services for 5 pressure reducing valves (PRV), 5 emergency service valves (ESV) and any required pump station improvements as part of the City’s surface water conversion. Mr. Warren served as a Project Engineer performing hydraulic modeling analyses for average day and peak day services for the City of Conroe system. The analysis involved determining surface water… Show more

LAN was contracted by the City of Conroe for Phase I, II and III preliminary engineering, design, and construction phase services for 5 pressure reducing valves (PRV), 5 emergency service valves (ESV) and any required pump station improvements as part of the City’s surface water conversion. Mr. Warren served as a Project Engineer performing hydraulic modeling analyses for average day and peak day services for the City of Conroe system. The analysis involved determining surface water acceptance points within the City, new pump selection and determining PRV and ESV set points to maintain minimum and maximum pressures within the system. Show less

LAN was retained to provide design and construction phase engineering services for improvements at the Flint Water Plant to allow the facility to operate on a continuous basis and be the primary water source for the city. The project was fast tracked to meet specific milestones that were driven by their water supply contract termination with DWSD. Improvements included new liquid oxygen and liquid nitrogen storage tanks; 36-inch and 42-inch raw watermain piping and valves; a new 15-mgd high… Show more

LAN was retained to provide design and construction phase engineering services for improvements at the Flint Water Plant to allow the facility to operate on a continuous basis and be the primary water source for the city. The project was fast tracked to meet specific milestones that were driven by their water supply contract termination with DWSD. Improvements included new liquid oxygen and liquid nitrogen storage tanks; 36-inch and 42-inch raw watermain piping and valves; a new 15-mgd high service pump and motor; new chlorine gas feed system for midpoint and post chlorination; a new 5 MVA, 46KV substation; berm improvements to the lime sludge disposal lagoon; new lime sludge lagoon decant structure, duplex submersible pump station, and 6-inch HDPE forcemain; and a 6-ton CO2 storage and feed system for pH control of the lime sludge lagoon decant waste stream. As a Project Engineer, Mr. Warren worked on both design and construction phase services, including the design of the Bray Road lime sludge lagoon decant system, pump station and CO2 storage and feed system, as well as responding to RFI's and performing submittal and shop drawing reviews for work at the Bray Road site and the Flint Water Treatment Plant site. Show less

Mr. Warren worked as a Project Engineer for the design and construction engineering services involving a new supply to a large scale wholesale raw water customer. The project included water system hydraulic modeling; transient modeling for existing and proposed systems of both the Owner and the Customer; design of piping modifications at the Pinconning Pump Station; design of redundant connections, metering and flow control for supply to the new customer; and construction engineering services… Show more

Mr. Warren worked as a Project Engineer for the design and construction engineering services involving a new supply to a large scale wholesale raw water customer. The project included water system hydraulic modeling; transient modeling for existing and proposed systems of both the Owner and the Customer; design of piping modifications at the Pinconning Pump Station; design of redundant connections, metering and flow control for supply to the new customer; and construction engineering services. Mr. Warren's primary role was transient modeling for the existing and proposed systems. Mr. Warren also assisted with the reinforced concrete design of the cast in place metering vault. Show less

Mr. Warren served as a Project Engineer for the design of the relocation of approximately 1,500 linear feet of the existing 90-inch PCCP waterline. The water transmission main relocation was needed to make way for three proposed 108-inch water transmission mains that will cross this existing 90-inch waterline. Design efforts included evaluation of pipe materials to be compatible with the existing waterline, thrust restraint, connections between existing and proposed waterline, and design of a… Show more

Mr. Warren served as a Project Engineer for the design of the relocation of approximately 1,500 linear feet of the existing 90-inch PCCP waterline. The water transmission main relocation was needed to make way for three proposed 108-inch water transmission mains that will cross this existing 90-inch waterline. Design efforts included evaluation of pipe materials to be compatible with the existing waterline, thrust restraint, connections between existing and proposed waterline, and design of a valve support for a 90-inch gate valve. The design had to address the compromised structural integrity of the existing PCCP pipe and a short construction time frame of 45 days in order to meet water demands. Show less

Mr. Warren served as Project Engineer for the design of six gate valves ranging from 36- to 60-inches to allow for the installation of a flow control station with a 36-inch sleeve valve and associated 36-inch butterfly valves. The project also included the design of two temporary 60-inch plug valves to allow for installation of the gate valves for the pump station to remain in operation. Mr. Warren provided design services for the reinforced concrete valve support structures.

Mr. Warren served as Project Engineer for the Pressure Filter Media Evaluation for the City of Joliet. LAN was retained by the City of Joliet to perform a Hydrous Manganese Oxide (HMO) radium removal efficiency study for the City’s water system. The City utilizes groundwater and pressure filter treatment to supply their potable water distribution system. HMO is added to the water prior to reaching the pressure filters allowing for mixture and proper CT. The pressure filters, layered with… Show more

Mr. Warren served as Project Engineer for the Pressure Filter Media Evaluation for the City of Joliet. LAN was retained by the City of Joliet to perform a Hydrous Manganese Oxide (HMO) radium removal efficiency study for the City’s water system. The City utilizes groundwater and pressure filter treatment to supply their potable water distribution system. HMO is added to the water prior to reaching the pressure filters allowing for mixture and proper CT. The pressure filters, layered with gravel, sand, and anthracite, remove radium from the water producing treated effluent. Backwashing the pressure filters reduces the radium concentration of the filter media.
The scope of work included sampling of sand and anthracite from six (6) pressure filters within the City’s water system. Samples were then sent for laboratory analysis to determine media gradation, specific gravity, Mohs’ hardness and radium concentration. Data collection was required to calculate treated water for each filter, as well as total radium removal.
The first iteration of the study was performed in 2012 with the City seeking additional services in 2014 in order to provide results showing change over time. LAN presented the City with findings from the study, including radium removal efficiency of the pressure filters and radium removal efficiency of the backwash cycle. Based on the data calculated by LAN, remaining media life was recommended to the City before media would be classified as landfill waste and/or special waste. Mr. Warren was responsible for the sampling observations and the analysis of the laboratory results for both iterations of the analysis.
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Mr. Warren served as a Project Engineer for the preparation of a PER to develop alternatives for the repair or replacement of the existing IPS. The PER defined four alternatives, including various methods of re-using the existing facilities that are in adequate condition, as well as constructing a new pumping facility. The recommended alternative included reusing the existing intake structure and pump suction wetwell in addition to making piping connections to the existing 36- and 42-inch… Show more

Mr. Warren served as a Project Engineer for the preparation of a PER to develop alternatives for the repair or replacement of the existing IPS. The PER defined four alternatives, including various methods of re-using the existing facilities that are in adequate condition, as well as constructing a new pumping facility. The recommended alternative included reusing the existing intake structure and pump suction wetwell in addition to making piping connections to the existing 36- and 42-inch transmission mains. Mr. Warren was responsible for assisting the Project Manager in the development of alternatives, production of the report, creation of exhibits and assembly of a preliminary opinion of probable cost for each recommended alternative. Show less

Project Engineer for a regional stormwater detention basin on the Briar Branch tributary to Buffalo Bayou. This project maximizes the available volume of the project site with 44 acre-feet of storage achieved on an 8-acre site. The basin includes a curvilinear design and landscaping that enhances the side slope stability of the basin and minimizes long term maintenance. AutoCAD and Civil 3D were utilized extensively for this design effort to maximize design efficiency and to quickly and… Show more

Project Engineer for a regional stormwater detention basin on the Briar Branch tributary to Buffalo Bayou. This project maximizes the available volume of the project site with 44 acre-feet of storage achieved on an 8-acre site. The basin includes a curvilinear design and landscaping that enhances the side slope stability of the basin and minimizes long term maintenance. AutoCAD and Civil 3D were utilized extensively for this design effort to maximize design efficiency and to quickly and accurately determine quantities. Mr. Warren provided design services for the re-routing of the existing waterline and sanitary sewer line that ran through the proposed detention basin. Show less

In an effort to comply with the Wisconsin Department of Natural Resources code regarding allowable groundwater conditions at below grade reservoirs, the GBWU retained LAN to develop a plan and construction documents to lower the groundwater level at the existing reservoirs. Mr. Warren assisted the Project Engineer for the final design of the groundwater dewatering system which was developed into two phases and consisted of a series of French drains, manholes and pumps to lower the local… Show more

In an effort to comply with the Wisconsin Department of Natural Resources code regarding allowable groundwater conditions at below grade reservoirs, the GBWU retained LAN to develop a plan and construction documents to lower the groundwater level at the existing reservoirs. Mr. Warren assisted the Project Engineer for the final design of the groundwater dewatering system which was developed into two phases and consisted of a series of French drains, manholes and pumps to lower the local groundwater table around the reservoirs. He was also responsible for production of the construction documents and updated groundwater profiles to monitor the effect of Phase 1 of the project as well as evaluate the necessity of Phase 2 of the design. Show less

. Facilities plan prepared to meet requirements of the Clean Water State Revolving Fund (CWSRF) loan funding for seven wastewater projects estimated at $66,300,000 over the next five years. The implementation plan included preparation of the projects schedules, capital financing plan, and support in developing the adopting resolution and the public participation hearing. The plan was presented to the Florida Department of Environmental Protection. Refurbish, upgrade, and expand the WC1WRF and… Show more

. Facilities plan prepared to meet requirements of the Clean Water State Revolving Fund (CWSRF) loan funding for seven wastewater projects estimated at $66,300,000 over the next five years. The implementation plan included preparation of the projects schedules, capital financing plan, and support in developing the adopting resolution and the public participation hearing. The plan was presented to the Florida Department of Environmental Protection. Refurbish, upgrade, and expand the WC1WRF and continue to use the facility to provide wastewater service to the Conserv 1 Service Area. Analysis included determining treatment facility upgrades at the WCIWRF to meet the projected flows. Each process was evaluated and sized based on the current projections. Effluent reuse and disposal considerations were evaluated and factored into the study. A detailed cost analysis was performed, and nonmonetary factors were then considered before the final report was presented to the City. Mr. Warren was responsible for the state revolving fund (SRF) loan application. Show less

Reedy Creek Improvement District (RCID) desired to improve the resiliency of their wastewater collection system. As part of these efforts, a standby diesel pump was installed at Lift Station 50 to provide service to a key re-pump station in the event of power loss to the submersible pumps. Mr. Warren served as the project manager.

Orange County Utilities (OCU) owns and maintains 772 wastewater pump stations and 1,340 miles of gravity mains. Approximately 78 pump stations have standby power generation on site; however, the remainder are supported during power outages by 72 standby portable generators. Tetra Tech created a gravity collection system model in InfoSWMM and evaluating critical system locations based on time before an anticipated sanitary sewer overflow (SSO) and impacts of a potential SSO. Further, Tetra… Show more

Orange County Utilities (OCU) owns and maintains 772 wastewater pump stations and 1,340 miles of gravity mains. Approximately 78 pump stations have standby power generation on site; however, the remainder are supported during power outages by 72 standby portable generators. Tetra Tech created a gravity collection system model in InfoSWMM and evaluating critical system locations based on time before an anticipated sanitary sewer overflow (SSO) and impacts of a potential SSO. Further, Tetra Tech identified the twenty most critical locations and provided recommended site layouts to add on site standby power generation. Show less

Reedy Creek Improvement District (RCID) owns a 20.0 MGD wastewater treatment plant (WWTP). As part of the plant operating permit requirements, a capacity analysis report is required in 5-year increments or at permit renewal. This project consisted of evaluating the plant operations based on 10 years of historical data and projecting the facilities ability to treat project flows over the next 10 years. Mr. Warren served as the project manager.

Orange County Utilities (OCU) owns and maintains gravity sewer systems along Presidents Drive and University Boulevard. The systems consist of approximately 4,000 LF of 36-inch and 10,800 LF of 12- through 24-inch, respectively. Both systems experience operational deficiencies related to capacity constraints, design limitations or inadequate construction causing. Tetra Tech is providing conceptual alternatives and a present worth analysis to evaluate options for addressing the failing… Show more

Orange County Utilities (OCU) owns and maintains gravity sewer systems along Presidents Drive and University Boulevard. The systems consist of approximately 4,000 LF of 36-inch and 10,800 LF of 12- through 24-inch, respectively. Both systems experience operational deficiencies related to capacity constraints, design limitations or inadequate construction causing. Tetra Tech is providing conceptual alternatives and a present worth analysis to evaluate options for addressing the failing sewers, such as: re-routing of upstream force mains, relocation of the gravity sewer, installation of new lift stations to facilitate gravity sewer removal, and continuing long term rehabilitation. Mr. Warren serves as the Project Manager and is responsible for conceptual alternative development. Show less

Tetra Tech provided preliminary engineering, final design, permitting, bid assistance and construction administration for the replacement of the force mains between lift stations 201, 205 and 215. The project includes approximately 5,300 LF of 8-inch and 10-inch force main. Mr. Warren served as the project manager and is responsible for the current and future flow analysis, route alternatives, final design documents.

Reedy Creek Improvement District (RCID) owns a 20-MGD wastewater treatment plant (WWTP) which utilizes mechanical screening and headcells for grit removal at the headworks structure. Long term exposure of the concrete channel walls to the gases generated from the raw wastewater caused existing coating system failure and deterioration of the concrete substrate. Tetra Tech designed a phased construction plan to allow for plant operations to remain in service while channels were rehabilitated… Show more

Reedy Creek Improvement District (RCID) owns a 20-MGD wastewater treatment plant (WWTP) which utilizes mechanical screening and headcells for grit removal at the headworks structure. Long term exposure of the concrete channel walls to the gases generated from the raw wastewater caused existing coating system failure and deterioration of the concrete substrate. Tetra Tech designed a phased construction plan to allow for plant operations to remain in service while channels were rehabilitated and additional control structures were installed. In addition, Tetra Tech designed a 48-inch transfer pipe from the headcells to the BNR structure in order to bypass an existing un-used structure to facilitate decommissioning. Mr. Warren was responsible for the final design and construction phase services. Show less

Relocation of existing potable water and wastewater utility crossings off an existing bridge on Barracuda Boulevard scheduled for replacement by the Florida Department of Transportation. All utility crossings will be removed prior to construction of the bridge and redirected along Quay Assisi and the North Causeway. The project includes replacement of approximately 2,500 linear feet of existing 6- and 8-inch water main and associated services with new 10-inch water main and appurtenances. The… Show more

Relocation of existing potable water and wastewater utility crossings off an existing bridge on Barracuda Boulevard scheduled for replacement by the Florida Department of Transportation. All utility crossings will be removed prior to construction of the bridge and redirected along Quay Assisi and the North Causeway. The project includes replacement of approximately 2,500 linear feet of existing 6- and 8-inch water main and associated services with new 10-inch water main and appurtenances. The project includes approximately 1,600 linear feet of sanitary force main, replacement of an existing lift station, and a reuse main sub-aqueous directional drill. Project includes permitting, bidding, and limited construction administration services. Mr. Warren was responsible for QA/QC review of the potable water and wastewater system. Show less

The project consisted of the preparation of Water, Wastewater, and Reclaimed System Master Plans for the City of Minneola. Professional services included data collection, model development, model calibration, capacity evaluation, future growth projections, future model simulations, capital improvement project planning, and project budgetary cost development.

Preliminary and final design, permitting, bidding, and construction services for the improvements to the existing water and wastewater systems on 9th Street. The project extends from south of the intersection with Story Road to Plant Street. The project included replacement of the existing force main with a 24-inch force main with 4,480 feet of 24-inch force main, 910 feet of gravity sewer upgrades and 2,000 feet of water main replacements. The force main replacement includes 2,155 feet… Show more

Preliminary and final design, permitting, bidding, and construction services for the improvements to the existing water and wastewater systems on 9th Street. The project extends from south of the intersection with Story Road to Plant Street. The project included replacement of the existing force main with a 24-inch force main with 4,480 feet of 24-inch force main, 910 feet of gravity sewer upgrades and 2,000 feet of water main replacements. The force main replacement includes 2,155 feet installed by horizontal directional drill. The crossing of the CSX railroad required licenses for both the water main and force main crossings. Mr. Warren served as the project manager during bidding and construction. Show less

Rehabilitation of four existing lift stations within the service area during the bid and construction phases, which included addressing City comments, coordinating with sub-consultants, and services during construction such as shop drawing review and responses to requests for information. Mr. Warren acted as project manager during construction services phase.

The expansion included approximately 9,000 linear feet of new 6- and 8-inch reclaimed water pipe installed within the City’s right-of-way through residential neighborhoods. Existing irrigation meters required new service lines from the reuse main and new meter box and backflow prevention assemblies. The project consisted of both open trench construction and trenchless technology in certain areas to minimize disruption throughout the corridor. Tetra Tech completed the design using the… Show more

The expansion included approximately 9,000 linear feet of new 6- and 8-inch reclaimed water pipe installed within the City’s right-of-way through residential neighborhoods. Existing irrigation meters required new service lines from the reuse main and new meter box and backflow prevention assemblies. The project consisted of both open trench construction and trenchless technology in certain areas to minimize disruption throughout the corridor. Tetra Tech completed the design using the traditional design-bid-build delivery method and construction was phased to only allow work within two subdivisions at a single time. Mr. Warren served as the project manager during bidding and construction phase services. Show less

Project Engineer for the Orange County Utilities wastewater rehabilitation/replacement program to perform preliminary engineering to clearly define scopes and resolve issues that have historically delayed projects in final design. The project included assessing, evaluating, and performing preliminary design of 10 duplex and 5 triplex pump stations. Preliminary design engineering services included surveying, capacity evaluations, alternative evaluations, wet well capacity, gravity sewer… Show more

Project Engineer for the Orange County Utilities wastewater rehabilitation/replacement program to perform preliminary engineering to clearly define scopes and resolve issues that have historically delayed projects in final design. The project included assessing, evaluating, and performing preliminary design of 10 duplex and 5 triplex pump stations. Preliminary design engineering services included surveying, capacity evaluations, alternative evaluations, wet well capacity, gravity sewer capacity, pump hydraulics, conceptual planning, and preparation of a preliminary design report for each pump station. Preliminary design reports for each station included required improvements, site plans, and mechanical plans in addition to a detailed opinion of probable construction costs Show less

The City of Orlando wastewater transmission system was constructed in the late 1940s of cast iron pipe that is nearing the end of its useful life. Tetra Tech evaluated the criticality and condition of the existing system as well as provided route alternatives and preliminary design of a proposed new forcemain network. Mr. Warren was responsible for the 50-year design flow analysis, criticality and condition evaluation of the existing system, and the hydraulic modeling of the proposed forcemain… Show more

The City of Orlando wastewater transmission system was constructed in the late 1940s of cast iron pipe that is nearing the end of its useful life. Tetra Tech evaluated the criticality and condition of the existing system as well as provided route alternatives and preliminary design of a proposed new forcemain network. Mr. Warren was responsible for the 50-year design flow analysis, criticality and condition evaluation of the existing system, and the hydraulic modeling of the proposed forcemain network.
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The Toho Water Authority (TWA) requested the services of Tetra Tech to implement a rehabilitation and replacement program for their gravity sewer system in areas previously identified for upgrades. The upgrades included CIPP lining of approximately 110,000 linear feet of gravity sewer sizes 8- to 24-inch, manhole lining of approximately 3,700 vertical feet, and traditional gravity sewer replacement at approximately 130 sites. Used GIS programming to produce construction documents for the CIPP… Show more

The Toho Water Authority (TWA) requested the services of Tetra Tech to implement a rehabilitation and replacement program for their gravity sewer system in areas previously identified for upgrades. The upgrades included CIPP lining of approximately 110,000 linear feet of gravity sewer sizes 8- to 24-inch, manhole lining of approximately 3,700 vertical feet, and traditional gravity sewer replacement at approximately 130 sites. Used GIS programming to produce construction documents for the CIPP lining in order to reduce cost during construction. Mr. Warren served as a project engineer responsible for the construction documents.
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Mr. Warren served as a Project Engineer for design engineering services of a new water supply intake system. Located on the western shore of Lake Huron at the county line between Sanilac and St. Clair counties, the new 85-mgd water supply intake system consists of two intake structures (timber cribs), an intake pipeline (78- and 60-inch), an onshore junction chamber and a zebra mussel control system. Mr. Warren was responsible in assisting the Project Manager with the design of the zebra mussel… Show more

Mr. Warren served as a Project Engineer for design engineering services of a new water supply intake system. Located on the western shore of Lake Huron at the county line between Sanilac and St. Clair counties, the new 85-mgd water supply intake system consists of two intake structures (timber cribs), an intake pipeline (78- and 60-inch), an onshore junction chamber and a zebra mussel control system. Mr. Warren was responsible in assisting the Project Manager with the design of the zebra mussel control system and elements of the intake structure and junction chamber. He was also responsible for the production of the construction documents. Show less