TABLE OF CONTENTS. SECTION 1 INTRODUCTION 1.1 Background Purpose and Scope

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2 TABLE OF CONTENTS Page EXECUTIVE SUMMARY... ES-1 SECTION 1 INTRODUCTION 1.1 Background Purpose and Scope SECTION 2 HYDRAULIC AND PROCESS ASSESSMENT 2.1 Data Gathering and Analysis Population and Flow Projections Influent Pump Station Evaluation WWTP Hydraulic Analysis Plant Capacity Evaluation per TCEQ Requirements Design Criteria Design Flow Loadings SECTION 3 PRELIMINARY DESIGN 3.1 Existing Discharge Permit Influent Lift Station Headworks Structure Alternatives Analysis Grit Removal Alternatives Analysis Oxidation Ditches Clarifiers Clarifier Mechanical Equipment Algae Control in Clarifier Weirs Analysis Tertiary Filtration Disinfection Alternatives Analysis Electrical Equipment Expansion of Plant Capacity Recommended Improvements Klotz Associates Project No November 2013 TOC-1 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

3 SECTION 4 COST ESTIMATES 4.1 Construction Cost SECTION 5 PHASING PLAN 5.1 Construction Packages Klotz Associates Project No November 2013 TOC-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

4 LIST OF EXHIBITS Exhibit 1-1 Exhibit 1-2 Exhibit 1-3 Exhibit 2-1 Exhibit 2-2 Exhibit 2-3 Exhibit 2-4 Exhibit 3-1 Exhibit 3-2 Existing Process Flow Diagram Existing Plant Photos Existing Site Plan with Recommended Demolition/Decommissioning Mont Belvieu Population Projection Wastewater Flow Projections based on Population Projection Influent Pump Station Evaluation Existing Hydraulic Profile 1997 Process Train Proposed Process Flow Diagram with UV Disinfection Proposed Process Flow Diagram with Chlorination/Dechlorination Exhibit 3-3 Site Plan Recommended Improvements Phase 1 Exhibit 3-4 Site Plan Recommended Improvements Phase 2 Expansion to 3.0 MGD Klotz Associates Project No November 2013 TOC-3 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

5 LIST OF TABLES Table 2-1 Major Equipment Inventory Table Table 2-2 Plant Capacity Evaluation per TCEQ Requirements Table 2-3 Discharge Monitoring Reports Summary 2011 and 2012 Table 3-1 Headworks Alternative 1 Engineer s Opinion of Probable Construction Cost Table 3-2 Headworks Alternative 2 Engineer s Opinion of Probable Construction Cost Table 3-3 Energy Savings for Premium Efficiency Motors Table 3-4 Disinfection Equipment Alternative 1 Engineer s Opinion of Probable Construction Cost Table 3-5 Disinfection Equipment Alternative 2 Engineer s Opinion of Probable Construction Cost Table 3-6 Disinfection Alternatives 1 and 2 Net Present Value Table 3-7 Disinfection Alternatives 1 and 2 Operations and Maintenance Costs Table 3-8 Comparison: UV and Chlorination Disinfection Table 3-9 WWTP Expansion Options Comparison Table 5-1 Engineer s Opinion of Probable Construction Cost of First Priority Items Table 5-2 Engineer s Opinion of Probable Construction Cost of Recommended Items of Second Priority Items Klotz Associates Project No November 2013 TOC-4 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

6 APPENDICES Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Appendix G Appendix H TPDES Permit Screens Replacement Proposal Grit Chamber Proposal Clarifiers Mechanism Replacement Proposal Clarifier Launder Covers, Weir Brushes and Sprays Filtration System Proposal UV System Replacement Proposal Chlorination/Dechlorination System Proposal Klotz Associates Project No November 2013 TOC-5 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

7 EXECUTIVE SUMMARY Background The Cotton Bayou Wastewater Treatment Plant (WWTP) is owned and operated by the City of Mont Belvieu. The Cotton Bayou WWTP treats wastewater from the City of Mont Belvieu. The existing Plant utilizes conventional wastewater treatment technology consisting of preliminary screening followed by biological treatment (oxidation ditch), secondary clarifiers, and ultraviolet (UV) disinfection. Process solids treatment consists of sludge dewatering by Aqua-Zyme Disposal Systems, and hauling the dry sludge cake to the sanitary landfill. This Preliminary Engineering Report (PER) summarizes findings and results for an evaluation of two major tasks: facility and process assessment. Based on the results of the process and facility assessment this PER discusses alternatives for rehabilitation and replacement with the corresponding Engineer s opinion of construction cost of the recommended plant improvements. Statement of the Problem In general, most of the Cotton Bayou WWTP process and electrical equipment has reached the end of its intended design life. While some equipment has been replaced or rebuilt over the years, the majority of the plant equipment and structures, with exception of the influent lift station, were installed during the 1981 original construction and the 1997 upgrade. The new influent lift station was built in Because of age, condition, and energy usage, some of the process equipment and structures should be given top priority for replacement and/or rehabilitation. Klotz Associates Project No November 2013 ES-1 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

8 Specific problems include a headworks structure that overflows when two influent pumps are in operation and a UV system that requires extensive maintenance. In addition, the discharge monitoring report (DMR) testing shows that the Plant sometimes exceeds the fecal coliform limits. A likely cause for excessive fecal coliform is the algae growth combined with the aging UV system. Algae is growing in the effluent troughs of all clarifiers and the influent pump station does not meet the TCEQ redundancy criteria for the permitted peak flow conditions. The operator reports that he runs both pumps during large rain events, indicating that two pumps are needed at times. In order to meet the TCEQ requirements, the Plant must have sufficient pumps to meet permitted peak flow with one pump out of service. Project Base Solution Klotz Associates investigated alternative solutions to these problems prior to selecting the recommended solution, as reported in this document. As part of this PER the following improvements were evaluated for implementation: 1. Influent Pump Station: Additional Pumping Capacity to meet the TCEQ redundancy criteria. Flow regulation by using the existing Variable Speed Drives (VFD) to prevent hydraulic and process overloading of the plant. 2. Preliminary Treatment Improvements: Replacement or modifications of the existing headworks structure to accommodate proposed equipment. Installation of additional mechanical screen with associated screenings washer/compactor. Replacement or installation of the new grit chamber with associated grit classifier. Associated electrical and mechanical equipment. Klotz Associates Project No November 2013 ES-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

9 3. Oxidation Ditches Improvements: Replacement of the existing surface brush aerator rotor motors with new premium efficiency motors 4. Clarifiers Improvements: Replacement of the clarifier mechanism. Installation of effluent launder covers, weir brushes or weir sprays for algae control. The launder covers block sunlight which feeds the algae. 5. Tertiary Treatment: Installation of new tertiary filters downstream from the clarifiers. 6. Disinfection System improvements: Replacement of the existing UV disinfection system with the new UV disinfection system or chlorination/dechlorination system. 7. Electrical/Control System modifications: Replacement of the electrical and control equipment including installation of the inplant SCADA system. Population and Flow Projections Population projections were made using the United States Census data for the years 1990, 2000 and 2010 as background. However, based on recent and proposed development, the City estimates that the 2013 population is 5,400 persons and anticipates an annual increase of 400 persons per year in the future. This increase is higher than the projection based on the historical census data. Average Daily Flow (ADF) per capita was calculated by dividing the ADF by current population. A multiplier of 4 was used to calculate future peak flow based on the existing peak flow data ( ). According to the flow projections Klotz Associates Project No November 2013 ES-3 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

10 based on the information provided by the City, the Cotton Bayou WWTP will have sufficient capacity for approximately 10 years. Refer to Exhibit 2-2. Per TCEQ permit requirements, engineering and financial planning must occur when a sewage treatment facility reaches 75% of the permitted daily average or annual average flow for three consecutive months. Presently the Cotton Bayou WWTP operates at 40% of its permitted flow. Based on the City s flow projections, the City will begin planning for plant expansion in Capacity of the Cotton Bayou WWTP can be increased by building new facilities at the existing site, and at the adjacent property to the west of the existing site. The adjacent property has been set aside by the City of Mont Belvieu for this purpose. Hydraulic and Process Assessment A hydraulic analysis of the Cotton Bayou WWTP for the current permitted peak flow indicates sufficient hydraulic capacity for all units with the exception of the headworks structure. The headworks structure does not have sufficient freeboard under the current permitted peak flow conditions and overflows with simultaneous operation of the two influent pumps running at full speed. A process evaluation for compliance with the current Texas Commission on Environmental Quality (TCEQ) design requirements for Wastewater Treatment Facilities (Chapter 217) indicates sufficient process capacity for the near term future flow conditions. Design Criteria Design Flows Flows for the Cotton Bayou WWTP are summarized below: Actual Average Daily Flow ( ) Actual 2-hour Peak Flow ( ) 0.6 MGD 1,667 GPM Klotz Associates Project No November 2013 ES-4 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

11 Permitted Average Daily Flow Permitted 2-hour Peak Flow 1.5 MGD 3,125 GPM Loadings There is no influent sampling data available to evaluate the actual organic loading concentration. The assumed biochemical oxygen demand (BOD 5 ) value of 200 mg/l and ammonia-nitrogen (NH 3 -N) assumed value of 45 mg/l are assumptions consistent with design recommendations in TCEQ Chapter 217, Section It is recommended that actual influent test data be obtained prior to design phase activities. Evaluation of Alternative Solutions Headworks Structure Alternatives Two potential alternatives were developed for the headworks structure as follows: Alternative 1: This alternative includes replacement of the existing headworks structure with a new structure. The new intake structure will include a flow splitter box equipped with flow proportional weir gates, new mechanical screens with associated washer/compactor, conveyor and controls and grit chamber and grit classifier. This new intake structure will be constructed to the north of the influent pump station. Additional work includes new piping and fittings for tie-in to the existing force main and piping to the oxidation ditches. The new headworks structure will be sized to accommodate the additional mechanical screens in the future without any structural modifications. Alternative 2: This alternative includes rehabilitation and modification of the existing headworks structure to accommodate a new mechanical screen with associated washer/compactor, conveyor and controls, and optional grit chamber with grit classifier. Klotz Associates Project No November 2013 ES-5 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

12 Disinfection System Alternatives: Two potential alternatives for the disinfection system were developed. Alternative 1: This alternative includes replacement of the existing IDI Aquaray UV disinfection system with a new higher capacity and more efficient UV disinfection system. This alternative will require tertiary filters upstream of the new UV system if the coliform permit requirement is lowered to ensure reliability of disinfection. The new UV structure will be sized to accommodate the additional UV lamps in the future without any structural modifications. Alternative 2: This alternative includes switching to a different method of disinfection using a combination of chlorine and a dechlorination agent rather than UV disinfection. The TCEQ discharge permit would have to be amended in order for the Plant to switch to chlorination/dechlorination disinfection. The addition of tertiary filtration is optional with this alternative. Recommended Improvements 1. Influent Pump Station Install one additional pump with associated piping, electrical, and control components. Utilize the existing VFDs for flow control to the headworks structure. 2. Preliminary Treatment Improvements Headworks Structure Klotz Associates recommends Alternative 1: construction of a new headworks structure. The service life of a new structure is expected to be approximately 50 years, Klotz Associates Project No November 2013 ES-6 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

13 and the estimated remaining life of the existing structure after completion of the proposed modifications is approximately years. Retrofitting the existing intake structure with new mechanical screens and appurtenances would require modifications for necessary access to the equipment for operations and maintenance. In addition, the new structure will be designed to accommodate future plant expansion. Grit Removal Klotz Associates recommends continuing the practice of manual grit removal for the immediate future. The recommendation is based on the evaluation of two alternatives: automatic grit removal system and manual grit removal from the oxidation ditches. An automatic grit removal system costs significantly more than manual grit removal from the oxidation ditches. However, an automatic grit removal system does have the advantage of reducing wear on plant equipment such as the return and waste activated sludge pumps. An automatic grit removal system can be installed in the future as a stand-alone construction project. The new headworks structure will be designed to allow the future addition of the grit removal system without any structural modifications. 3. Oxidation Ditch Improvements: Replace electrical motors of the existing surface brush aerators motors with new premium efficiency motors. The new motors will provide approximately 8% of the aeration energy savings compared to the existing motors and a simple payback period of approximately 5.5 years. The oxidation ditches motors consume approximately 90% of the overall plant energy usage. 4. Clarifiers Improvements: The clarifier mechanism in the 1981 clarifier has outlived its intended design life and replacement is recommended. The clarifier mechanism in the 1997 clarifier will Klotz Associates Project No November 2013 ES-7 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

14 reach the end of its intended design life in approximately 4 years based on equipment life expectancy published in Water Environment Federation (WEF) Design of Municipal Wastewater Treatment Plants, 5 th Edition, and is recommended that the clarifier mechanism of all three clarifiers to be replaced as part of the Second Priority Items described in detail below. Drain, clean and evaluate conditions of the 1997 clarifiers for possible rehabilitation, if required. Install effluent launders covers, weir brush or weir spray for algae control to improve reliability of filtration and disinfection system. 5. Tertiary Treatment: Install effluent filters to improve the reliability of the disinfection system if disinfection effluent limits are tightened with a new permit. 6. Disinfection System Improvements: Klotz Associates recommends construction of a new UV disinfection system housed in the new concrete structure. This recommendation is based on a qualitative and quantitative comparison of both systems. The quantitative evaluation, including initial capital and life cycle costs, indicates approximately 10% lower initial capital cost for the UV disinfection system, and approximately 6% lower life cycle cost for a chlorination/dechlorination system. Considering qualitative factors including the safety of the plant operational personnel, and the general public s perception towards the danger of chlorine gas, a UV disinfection system is recommended. 7. Electrical/Control System Modifications: The electrical system will require upgrades and replacement because of the equipment age and adding/replacing process equipment. A SCADA system will allow operators to monitor and control major equipment including influent pumps, aerators, screens, UV and power status from a remote stationary or mobile device. Klotz Associates Project No November 2013 ES-8 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

15 WWTP expansion options and Estimated Construction Costs Klotz Associates prepared the Engineer s Opinion of construction cost of improvements and WWTP expansion with two options. Option 1 consists of two Phases as follows: Phase 1: Construct recommended improvements to ensure compliance with TPDES permit. The Engineer s opinion of probable construction cost of Phase 1, including 30% contingency, will be approximately $4,000,000 in current prices. Phase 2: Increase the capacity of the Wastewater Treatment Plant to 3.0 MGD utilizing the adjacent vacant site. Phase 2 improvements will include construction of new oxidation ditches and clarifiers with associated electrical, piping and site work. Most of the Phase 1 improvements, including new headworks, filters, new UV system, and new Electrical/Control system will be utilized as part of the Phase 2 expansion project. The Engineer s opinion of probable construction cost of Phase 2, including 30% contingency, will be approximately $9,200,000 in current prices. This phase will result in a new WWTP. Hence, the total cost of Option 1 is approximately $13,200,000 in current prices. Option 2 consists of two phases as follows: Phase 1: Replace the existing treatment plant with a new facility of the same capacity as the existing one. The only remaining process units will be the Influent Lift Station and sludge handling facilities. The new treatment plant can be built on the adjacent property to the west of the existing site. The adjacent property is owned by the City of Mont Belvieu. The existing treatment plant units will be demolished to provide land area for a Phase 2 expansion. The Engineer s Opinion of Construction Cost of Phase 1 of this option, including a 30% contingency, is approximately $7,950,000. Option 1. Klotz Associates Project No November 2013 ES-9 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

16 Phase 2: increase the capacity of the Wastewater Treatment Plant to 3.0 MGD in the future. Phase 2 improvements will include constructing new process units at the existing treatment plant site. The Engineer s opinion of probable construction cost of Phase 2, including 30% contingency, will be approximately $7,950,000 in current prices. Hence, the total cost of Option 2 is approximately $15,900,000 in current prices, or approximately $2,700,000 higher than Option 1. Klotz Associates recommends Option 1 for WWTP expansion. This recommendation is based on a qualitative and quantitative comparison of both systems. The quantitative evaluation indicates approximately 20% lower capital cost. Qualitative factors include lower ultimate Operation and Maintenance Costs and earlier compliance with TPDES permit. Phase 1 of Option 1 can be further broken down in the following construction packages: Construction Package A - Top Priority Items with an estimated construction cost is $2,040,000: Preliminary Treatment Improvements excluding Grit Removal Clarifier Effluent Launder Covers for Algae Control Disinfection System Improvements Electrical/Control System Replacement and Modifications Construction Package B - Second Priority Items with an estimated construction cost is $1,960,000. Influent Pump Station Oxidation Ditches Improvements Clarifier Mechanism Replacement Grit Removal System Demolition Klotz Associates Project No November 2013 ES-10 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

17 Tertiary Treatment The following Phase 2 improvements are included in conceptual level Engineer s Opinion of construction cost to increase the plant capacity to 3.0 MGD: Additional pumps in the existing Influent Lift Station with associated piping and controls New higher capacity clarifiers to replace the existing clarifiers New higher capacity aeration tanks to replace the existing oxidation ditches Additional Filters Additional UV lamps Additional Electrical and Control work New Stand-by Generator SCADA upgrade Additional site work Additional process piping Klotz Associates Project No November 2013 ES-11 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

18 SECTION 1 INTRODUCTION 1.1. Background The original Cotton Bayou Wastewater Treatment Plant (WWTP) was constructed in The original facilities consisted of a dry-pit/wet-pit lift station, a headworks with a comminutor and hydrogritter, an oxidation ditch, a clarifier, a chlorination basin and sludge drying beds. In 1997 the plant was upgraded with the construction of an additional oxidation ditch, two clarifiers, an ultraviolet (UV) disinfection system, a splitter box and associated piping. In addition, a rotomat screen was added to the headworks, a generator was installed, a new office and lab was added and the sludge drying beds were removed and replaced with plastic media drying beds. The chlorination system was abandoned in place. The Existing Process Flow Diagram is shown on Exhibit 1-1 and Existing Plant Photos are presented in Exhibit 1-2. In 2007 the air-lift return activated sludge pumps were replaced with self-priming pumps. The gear drives on the oxidation ditch rotors and the clarifiers have been rebuilt and all the motors replaced. The plastic media drying beds were removed and replaced with an Aqua-Zyme Sludge Dewatering System. Neither the grit pump nor the comminutor in the headworks is functional. In 2010, the most recent upgrade was completed. The project included a new lift station, controls, control building and associated field piping. The new lift station pumps have variable frequency drives (VFDs) that allow the operator to vary the pump speed with the influent flow rate. The old lift station remains functional to serve the restroom in the adjacent office building. The Existing Site Layout is presented in Exhibit 1-3. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

19 The Discharge Monitoring Reports (DMRs) indicate periodic episodes of exceeding the bacteriological limit in wastewater effluent, indicating ineffective UV disinfection. In addition, Plant personnel report overflows of the headworks structure with two influent lift station pumps in operation and algae growth on the clarifier effluent weirs. Figure 5 in Exhibit 1-2 is a photograph showing the algae growth over approximately 3 weeks Purpose and Scope This PER describes the evaluation and recommendations for replacement and/or rehabilitation of specific items of process equipment at Cotton Bayou WWTP. The purpose of the PER is to: Identify viable rehabilitation or replacement alternatives by performing a review of the current plant drawings, conducting site visits, interviewing Mont Belvieu personnel and reviewing equipment options with various equipment vendors. Evaluate whether plant capacity is sufficient to accommodate future growth. Develop preliminary designs for the project. Develop preliminary construction cost estimates. The following items were identified for evaluation during a site visit in February 2013 with Larry Jordan, the City of Mont Belvieu Public Works Director: Headworks: Comminutor and grit pump are not functional and headworks overflows when both lift station pumps are running during a large rain event. UV disinfection system: System requires constant, expensive maintenance and frequently does not disinfect sufficiently to meet permit. The City requested an evaluation of returning to a chlorination disinfection system. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

20 During a site visit in March 2013 with Steve Keith, City of Mont Belvieu Chief Operator, it was noted that algae growth in the clarifier weirs was a significant maintenance concern. Operators scrub the weirs every two or three weeks to prevent algae growth from completely clogging the weirs. Also, one pump is still being maintained in the old pump station to serve the bathroom in the adjacent building. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

21 SECTION 2 HYDRAULIC AND PROCESS ASSESSMENT 2.1. Data Gathering and Analysis The City of Mont Belvieu provided original plant drawings dated 1980, plant drawings from the 1996 plant expansion and a copy of the discharge permit. The City also provided DMRs from 2011 and 2012 and one year s worth of power bills. Drawings of the new lift station were provided by the design engineer, HDR, Inc. A site visit with Chief Operator, Steve Keith, yielded equipment identification details such as motor horsepower, equipment brands and models and their condition. Klotz Associates contacted equipment vendors for information on existing equipment and obtained drawings, cut sheets and cost data for new equipment proposed for the site. An equipment list is provided in Table 2-1. Much of the Cotton Bayou WWTP equipment dating back to 1981 and 1997 is nearing or has reached the end of its intended design life. The concrete structures and piping can last another 20 years, but the mechanical equipment has a shorter design life generally ranging from years as published in Water Environment Federation (WEF) Design of Municipal Wastewater Treatment Plants, 5 th Edition Population and Flow Projections Population data was taken from the United States Census for the years 1990, 2000 and In addition the City provided 2012 development data indicating that 150 new houses were planned and estimated the 2013 population to be 5,400 persons. The City anticipates an annual increase of 400 persons per year in the future. Those data sources were used to plot population projections illustrated on Exhibit 2-1 and generate flow projections illustrated on Exhibit 2-2. If population continues to grow Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

22 as projected, the City population will be approximately 6,000 persons by approximately The flow projections on Exhibit 2-2 show that projected wastewater flow, with linear population growth, will not exceed the Plant s permitted capacity for more than 30 years. A multiplier of 4 was used to calculate future peak flow based on existing flow data ( ). Average Daily Flow (ADF) per capita was calculated by dividing the ADF by current population. However, if population grows as the City predicts, the Plant s permitted capacity will be reached in approximately 10 years. The capacity of the Cotton Bayou WWTP can be doubled by building new facilities at the existing site, and at the adjacent property to the west of the existing site. The adjacent property has been set aside by the City of Mont Belvieu for this purpose Influent Pump Station Flow Evaluation The Influent Lift Station was evaluated in conjunction with the WWTP Hydraulic Analysis. System curves were developed for the piping from the wet well to the headworks structure. Pump curves were obtained from KSB Inc., manufacturer of the influent pumps. The results of the evaluation shown on Exhibit 2-3 indicate a total flow of 6 MGD with simultaneous operation of both influent pumps at full capacity. The 6 MGD flow significantly exceeds the permitted peak 2-hour flow of 4.5 MGD, and consequently hydraulic and process capacity of the Plant. The lift station is equipped with variable speed drives for flow regulation. The Influent Pump Station does not meet the TCEQ redundancy criteria for the permitted peak flow conditions and the operator reports running both pumps during large rain events. In order to meet the TCEQ requirements, the Plant must have sufficient pumps to meet permitted peak flow with one pump out of service. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

23 2.4. WWTP Hydraulic Analysis The hydraulic grade line (HGL) was developed through the WWTP for each process train to determine if current plant facilities were sufficient for existing and permitted flows. The 1981 Process Train flows from the headworks to the original oxidation ditch and the original clarifier before flowing to the common UV disinfection facility. The 1997 Process Train flows from the headworks to the second oxidation ditch and on to the second and third clarifiers before flowing to the UV disinfection facility. The HGL for the 1997 process train is shown on Exhibit 2-4. The existing facilities have sufficient hydraulic capacity for the permitted peak 2-hour flow with the exception of the headworks structure. There are fewer than 6-inches of freeboard in the headworks structure during a peak 2-hour rain event Plant Capacity Evaluation per TCEQ Requirements The Cotton Bayou WWTP was evaluated for compliance with current TCEQ design requirements for Wastewater Treatment Facilities (Chapter 217). The summary of the evaluation is presented in Table 2-2. Because there is no influent testing data, the 5-day Biochemical Oxygen Demand (BOD 5 ) concentration was assumed to be 200 mg/l, consistent with TCEQ guidelines, Chapter Based on peak 2-hour flow of 4.5 MGD and the assumed CBOD 5 concentration, the Plant has sufficient process treatment capacity as required by TCEQ Design Criteria Design Flows Flows for the Cotton Bayou WWTP are summarized below: Actual Average Daily Flow ( ) 0.6 MGD Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

24 Actual 2-hour Peak Flow ( ) Permitted Average Daily Flow Permitted 2-hour Peak Flow 1,667 GPM 1.5 MGD 3,125 GPM Loadings There is no influent sampling data available to evaluate the actual organic loading concentration. The assumed BOD 5 value of 200 mg/l and assumed ammonia-nitrogen (NH 3 -N) value of 45 mg/l are consistent with design recommendations in TCEQ Chapter 217. It is recommended that actual influent test data be obtained prior to design phase activities. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

25 3.1 Existing Discharge Permit SECTION 3 PRELIMINARY DESIGN The Plant operates under the TPDES permit No.WQ issued in May 2010 with the expiration date of July The permit allows discharge into Cotton Bayou. The annual average flow of effluent shall not exceed 1.5 million gallons per day (MGD); nor shall the average discharge during any two-hour period (2-hour peak) exceed 3,125 gallons per minute (GPM), or 4.5 MGD. A draft permit renewal is being processed by TCEQ during the time of this evaluation. Permitted Effluent Discharge Limits for Average Daily Flow are as follows: CBOD 5 daily average TSS daily average 10 mg/l 15 mg/l Ammonia Nitrogen daily average 3 mg/l E. coli Bacteria daily average 126 colonies per 100 ml A copy of the permit is included in Appendix A. 3.2 Influent Lift Station Variable speed pumps can be operated at reduced speed to match the incoming flow and prevent hydraulic and process overloading of the Plant. Pump No.1 can start at a minimum speed and ramp to maximum speed on rising level in the wet well. Pump No. 2 can also start at a minimum speed and ramp up on rising level. Pump No. 1 can ramp down to match Pump No. 2 speed. Additional Pump No. 3 will be a back-up pump for required redundancy. All three pumps will alternate operation to equalize Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

26 running time. The firm capacity of the existing lift station can be increased by installing additional pumps without any structural modifications. 3.3 Headworks Structure Alternatives Alternative 1 New Headworks Structure This alternative includes replacement of the existing headworks structure with a new structure. The headworks has insufficient freeboard at permitted 2-hour peak flow. It is recommended to have 18-inches of freeboard but only 6-inches are available at peak flow. The new headworks structure will include a flow splitter box equipped with flow proportional weir gates, new mechanical screens and grit chamber with associated washer/compactor, conveyor and controls. Plant operation personnel indicated a positive experience with the existing Hycor Helisieve screen. The proposed screens will be similar to the existing one. Each screen will be sized for 50% of the permitted peak flow. A manual bar screen will be provided for redundancy. A representative screen proposal is included in Appendix B. The new headworks structure will be constructed to the north of the Influent Pump Station. Additional work includes new piping and fittings for tie-in to the existing force main and piping to the oxidation ditches. This alternative will require temporary by-pass pumping to connect to the existing influent force main. In addition, the new structure will be designed to accommodate potential future plant capacity increase. Additional channels with associated mechanical, electrical and control conduits will be constructed for future installation of two additional screens. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

27 Alternative 2 Modifications to the Existing Headworks Structure This alternative includes modifications to the existing headworks structure to accommodate new mechanical screens and an optional grit chamber with associated washer/compactor, conveyor and controls. Old equipment will be demolished, concrete will require repairs and grit and sludge accumulation will be removed Analysis The construction cost of a new headworks structure is estimated to be approximately $250,000 or 39% more than the rehabilitation of the existing structure. Table 3-1 presents a cost estimate for a new headworks structure and Table 3-2 presents a cost estimate for the rehabilitation of the existing headworks. The service life of a new structure is expected to be approximately 50 years, as published in WEF Design of Municipal Wastewater Treatment Plants, 5 th Edition, and the estimated remaining life of the existing structure after completion of the proposed modifications is approximately years. In addition, the existing headworks has less than 6-inches of freeboard at the current peak flow conditions and a high possibility of overflowing. Also, the new headworks will allow capacity increase in the future without major structural modifications. 3.4 Grit removal Alternatives Alternative 1 Grit Removal System This alternative includes construction of a grit chamber between the mechanical screens and aeration tanks. In today s market, there are two major types of grit Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

28 removal systems: vortex grit chambers (including forced hydraulic vortex and vortex settlers), and aerated grit chambers. Vortex type grit chambers generally offer better performance than conventional aerated chambers. Cost data for vortex type grit chambers were used for this study. According to information provided by grit chamber manufacturers, grit chambers have a guaranteed removal efficiency of 95% for 140 mesh (105 microns) grit, the equivalent to powder-fine sand. Alternative 2 Periodic Grit removal from the Oxidation Ditches The second alternative is to not install a grit removal system but have oxidation ditches manually cleaned periodically. Surface brush aerators will allow an unobstructed access to the oxidation ditches to facilitate manual cleaning Analysis The cost of constructing a new grit removal system is estimated to be approximately $480,000 including installation and 30% contingency. The grit removal system includes a grit classifier, grit dewatering equipment and two grit pumps. The grit removal system has the advantage of reducing wear on plant equipment such as the return and waste activated sludge pumps. A representative grit chamber proposal is included in Appendix C. 3.5 Oxidation Ditches The existing oxidation ditches provide effective extended aeration. The gears and motors have been rebuilt and replaced over the years. The motors operate 24-hours a day, 7-days a week and are the primary energy consumer in the Plant. If the motors are replaced with premium efficiency motors, the City could realize an annual energy savings of approximately $4,200 which translates to a simple payback period of 5.5 years. An estimate of these potential energy savings is presented in Table 3-3. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

29 3.6 Clarifiers Clarifier Mechanical Equipment Clarifier 1 was installed in 1981 and Clarifiers 2 and 3 were installed in The gears and motors have been replaced over the years but the clarifier mechanisms are the original equipment. The mechanical equipment dating back to 1981 has exceeded its design life and the mechanical equipment installed in 1997 will reach the end of its design life in four years according to the information in WEF Design of Municipal Wastewater Treatment Plants, 5 th Edition. While the equipment is still currently operating as intended, it is recommended that the 1981 clarifier mechanism be replaced. It is also recommended that the 1997 clarifiers be drained, cleaned and evaluated for possible rehabilitation or replacement. The estimated cost of replacing the 1981 clarifier equipment is approximately $204,000 including installation and 30% contingency. A representative clarifier equipment proposal is included in Appendix D Algae Control in Clarifier Weirs Algae growth in the clarifier effluent weirs is a persistent and time consuming maintenance problem for operators. Every two or three weeks, operators must scrub the effluent weirs of the algae to prevent the algae from entirely clogging the weirs. Klotz Associates evaluated two alternatives for limiting algae growth in the weirs. Alternative 1 Launder Covers Launder covers over the effluent weirs block sunlight from reaching the weirs, limiting algae growth. The covers are removable, allowing operators to access the weirs for cleaning and debris removal. The covers do not completely prevent algae accumulation because algae can grow in the center of the clarifier and still Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

30 accumulate on the weirs. However, the accumulated algae do not continue to grow in the darkness under the weir covers. A representative launder covers proposal is included in Appendix E. Alternative 2 Automated Brush Weir Cleaning System An alternate algae control technology is an automated brush cleaning system in which spring-loaded brushes attached to the clarifier skimmer arm sweep across the launders. The brushes remove accumulations in the weir including algae. This mechanical technology has many moving parts, requiring operator monitoring for equipment adjustment and brush replacement. A brochure for a brush cleaning system is included in Appendix E. Alternative 3 Automated Weir Spray Cleaning System Another algae control technology is a fixed spray apparatus cleaning system in which rotating spray heads direct high pressure water spray at the scum baffles, weirs and channel to prevent algae growth in the clarifier weirs. This mechanical technology also has moving parts, requiring operator monitoring to adjust, unclog and replace spray nozzles. A tertiary filter would help prevent nozzles from clogging. A proposal for an automated weir spray cleaning system is included in Appendix E Analysis The approximate capital cost of the launder covers on all three clarifiers is approximately $150,000 including installation and 30% contingency. The weir brush system costs $45,000 with a 30% contingency and the weir spray cleaning system costs $100,000 with a 30% contingency. All three systems would have to be periodically cleaned and checked while an automated system would require additional brush/nozzle replacement and on-going operator monitoring for jams and clogging. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

31 3.7 Tertiary Filtration Tertiary filtration improves the reliability of wastewater disinfection for both UV and chlorination/dechlorination. Because the efficacy of UV disinfection is dependent on the UV light transmittance through the wastewater effluent, the lower the UV transmittance the more energy is required to treat the water. Filtration facilitates a more efficient and effective UV disinfection system, and saves initial capital and energy costs. Similarly, in a chlorination/dechlorination system unfiltered effluent requires more chlorine and dechlorinating chemical. The approximate capital cost of the tertiary filtration system with a 100% redundancy (each of the two proposed filters is sized for the permitted 4.5 MGD flow) is approximately $800,000 including installation and 30% contingency. A representative tertiary filter proposal is included in Appendix F. Additional space will be reserved next to the proposed filters for future installation of two additional filters. 3.8 Disinfection Alternatives Alternative 1 Replacement of the existing UV Disinfection System This alternative includes replacement of the existing IDI Aquaray UV disinfection system with a new higher capacity and more efficient UV disinfection system. This alternative will require construction of two new UV disinfection channels with associated control and electrical components. The following design values are recommended for the proposed UV Disinfection System: Peak design flow of 4.5 MGD UV transmittance: 65% minimum Number of banks 2 (1 per each channel) Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

32 Disinfection limit: E. coli Bacteria daily average 126 colonies per 100 ml Maximum Power Draw: 13 kw The UV system will be designed to accommodate additional UV banks for possible future tightening of the disinfection limit and potential plant capacity increase in the future. Disinfection efficiency, especially for UV disinfection, is greatly affected by upstream treatment. This alternative will benefit from tertiary filters upstream of the new UV system, particularly if the new discharge permit requires lower bacteriological limits. This alternative requires electrical system modifications because of different voltage requirements of the proposed system. A representative UV system proposal is included in Appendix G. The Proposed Process Flow Diagram with UV Disinfection is illustrated on Exhibit 3-1. Alternative 2 Switching to Chlorination/Dechlorination This alternative includes switching to a different method of disinfection using a combination of chlorination and dechlorination chemicals in lieu of UV disinfection. The chlorination system will include the construction of a new chlorine contact basin sized to meet the current TCEQ criteria, a chlorine feed system, and a dechlorination feed system. For preliminary evaluation, the disinfection system was assumed to be a chlorine gas system and sulfur dioxide dechlorination system. Alternately, sodium hypochlorite and sodium bisulfite can be used for disinfection and dechlorination, respectively. The Plant s discharge permit would require an amendment to switch to a chlorination/dechlorination disinfection system. A representative chlorination/ dechlorination system proposal is included in Appendix H. The Proposed Process Flow Diagram with Chlorination/Dechlorination is illustrated in Exhibit 3-2. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

33 3.8.2 Analysis The UV disinfection system and chlorination/dechlorination system were compared both qualitatively and quantitatively. The quantitative evaluation, including initial capital and life cycle costs, indicates approximately 10% lower initial capital cost for the UV disinfection system, and approximately 6% lower life cycle cost for chlorination/dechlorination system as presented in Tables 3-4, 3-5 and 3-6. The operation and maintenance cost for chlorine disinfection are 15% lower than that for UV disinfection as presented in Table 3-7. The comparison also considered qualitative factors including the safety of the plant personnel and the public s perception towards the danger of chlorine gas especially in close proximity to schools. The qualitative comparison is presented in Table 3-8. Based on these qualitative factors Klotz Associates recommends the installation of a new UV disinfection system. 3.9 Electrical Equipment The electrical system will require upgrades and replacement because of the equipment age and adding/replacing process equipment. Upgrades will also be required if a new UV disinfection system is installed because the new UV system requires 480 V power and the existing system is designed for 220 V power. The existing 300 kw Onan generator is in fair condition and has sufficient capacity for the proposed modifications. Upgraded electrical equipment will also be required if the City installs a supervisory control and data acquisition (SCADA) system. A SCADA system will allow operators monitoring and control capability over pumps, screens, motors, UV Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

34 disinfection system, and plant power status from a stationary remote location or from mobile devices Expansion of Plant Capacity Klotz Associates evaluated two options of WWTP expansion. Option 1 consists of two Phases as follows: Phase 1: Construct recommended improvements to ensure compliance with TPDES permit, due to excessive wear and expensive maintenance required by aging equipment, and improvements of energy efficiency. Phase 2: Increase the capacity of the Wastewater Treatment Plant to 3.0 MGD. Phase 2 improvements will include constructing new process units on the adjacent property to the west of the existing site. Option 2 consists of two Phases as follows: Phase 1: Replace the existing treatment plant with a new facility of the same capacity as the existing one. The only remaining process units will be the Influent Lift Station and sludge handling facilities. The new treatment plant can be built on the adjacent property to the west of the existing site. The adjacent property is owned by the City of Mont Belvieu. The existing treatment plant units will be demolished to provide land area for a Phase 2 expansion. Phase 2: increase the capacity of the Wastewater Treatment Plant to 3.0 MGD. Phase 2 improvements will include constructing new process units at the existing treatment plant site. In both scenarios, the adjacent property will be utilized. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

35 3.11 Recommended Improvements Klotz Associates recommends Option 1 for WWTP expansion. This recommendation is based on a qualitative and quantitative comparison of both systems. The quantitative evaluation indicates approximately 20% lower capital cost. Qualitative factors include lower ultimate Operation and Maintenance Costs and earlier compliance with TPDES permit. The qualitative comparison is presented in Table 3-9. Exhibit 3-3 illustrates the Site Layout with the recommended Phase 1 improvements. Exhibit 3-4 illustrates the Site Layout with the recommended Phase 2 improvements. Phase 1 Preliminary Treatment: Construct the new headworks to the North of the new lift station. The proposed headworks will have two mechanical screens and weir gates for flow control. Clarifiers: Install launder covers or an automated weir cleaning system on the clarifier effluent weirs to prevent algae growth. Disinfection System: Install a new UV disinfection system to the West of the existing UV system. Electrical/Control System: Replace electrical and control system components including new Main Switchgear and Motor Control Centers (MCC). All new electrical components will be housed in the pre-cast climate controlled building. Influent Pump Station: Install one additional pump with associated piping, electrical, and control components, and adjust Pump Controls with utilization of the Variable Speed Drives (VFD). Aeration: Replace all motors with premium efficiency motors to improve energy efficiency. Clarifiers: Replace equipment in the 1981 clarifier, Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

36 Rehabilitate or replace equipment in the 1997 clarifiers contingent upon results of the clarifiers condition evaluation. Grit Removal System: Install a grit removal system in the headworks to reduce the wear of grit on process equipment. Tertiary Treatment: Install tertiary filters upstream of the UV disinfection system. Phase 2 - Expansion to 3.0 MGD The following improvements will be constructed as part of Phase 2 improvements : Influent Pump Station: Install two additional pumps with associated electrical and controls equipment Preliminary Treatment: Install additional screens in the headworks structure Clarifiers: Construct new clarifiers to replace the existing clarifiers at the existing site, and at the adjacent property to the West of the existing site owned by the City of Mont Belvieu. Aerations: Construct new aeration tanks to replace the existing aeration tanks at the existing site, and at the adjacent property to the West of the existing site owned by the City of Mont Belvieu. Disinfection System: Install additional UV lamps into the existing channels Filters: Install two additional filters Electrical/Control System: Add new Motor Control Center (MCC), and install new generator.. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

37 SECTION 4 COST ESTIMATES 4.1 Construction Cost Klotz Associates prepared the Engineer s Opinion of construction cost of improvements with two options. Option 1 consists of two Phases as follows: Phase 1: Construct recommended improvements to ensure compliance with TPDES permit. The Engineer s opinion of probable construction cost of Phase 1, including 30% contingency, will be approximately $4,000,000 in current prices. Phase 2: Increase the capacity of the Wastewater Treatment Plant to 3.0 MGD. The Engineer s opinion of probable construction cost of Phase 2, including 30% contingency, will be approximately $9,200,000 in current prices. Hence, the total cost of Option 1 is approximately $13,200,000 in current prices. Option 2 consists of two phases as follows: Phase 1: Replace the existing treatment plant with a new facility of the same capacity as the existing one. The Engineer s Opinion of Construction Cost of Phase 1 of this option, including a 30% contingency, is approximately $7,950,000. Phase 2: increase the capacity of the Wastewater Treatment Plant to 3.0 MGD. Phase 2 improvements will include constructing new process units at the existing treatment plant site. The Engineer s opinion of probable construction cost of Phase 2, including 30% contingency, will be approximately $7,950,000 in current prices. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

38 Hence, the total cost of Option 2 is approximately $15,900,000 in current prices, or approximately $2,700,000 higher than Option 1. Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

39 SECTION 5 PHASING PLAN 5.1 Construction Phases Klotz Associates Design Team recommends separating the construction into two phases. Phase 1 renovation items should be constructed immediately to ensure compliance with the current TPDES permit, due to excessive wear and expensive maintenance required by aging equipment, and improvements of energy efficiency. Phase 2 will expand WWTP capacity to 3.0 MGD. Phase 1 can be further broken down into the following construction packages: Phase 1- Construction Package A- Top Priority Items Construction Package A with an estimated construction cost of $2,040,000 includes the following improvements: Preliminary Treatment Improvements excluding Grit Removal Clarifier Effluent Launder Covers for Algae Control Disinfection System Improvements Electrical/Control System Replacement and Modifications Phase 1- Construction Package B- Second Priority Items Construction Package A with an estimated construction cost of $1,960,000 includes the following improvements: Influent Pump Station improvements Oxidation Ditches Improvements Clarifier Mechanism Replacement Grit Removal System Demolition Tertiary Treatment Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

40 Phase 2 Expansion of Treatment Plant Capacity to 3 MGD The following improvements will be required to expand the plant capacity to 3.0 MGD: Additional pumps in the existing Influent Lift Station with associated piping and controls New higher capacity clarifiers to replace the existing clarifiers New higher capacity aeration tanks to replace the existing oxidation ditches Additional Filters Additional UV lamps Additional Electrical and Control work New Stand-by Generator SCADA upgrade Additional site work Additional process piping Klotz Associates Project No November City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

41

42 Spalled Concrete Figure 1: Spalled Concrete on Existing Headworks Figure 2: Existing Rotomat Screen in Existing Headworks Klotz Associates Project No November 2013 Exhibit 1-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

43 Brush Aerators Figure 3: Oxidation Ditch Process Train Figure 4: Existing Blowers for Aerated Grit Chamber and Abandoned Chlorine Contact Basin Klotz Associates Project No November 2013 Exhibit 1-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

44 Algae Overgrowth Figure 5: Clarifier Weirs with Algae Overgrowth Figure 6: Return Activated Sludge Pumps Klotz Associates Project No November 2013 Exhibit 1-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

45 Figure 7: Existing Clarifier Mechanism Figure 8: Existing Clarifier Gear (Refurbished) Klotz Associates Project No November 2013 Exhibit 1-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

46 Figure 9: Existing UV Disinfection System Figure 10: Aqua-Zyme Sludge Dewatering System Klotz Associates Project No November 2013 Exhibit 1-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

47 Figure 11: Motor Control Center (1981) Figure 12: Motor Control Center (1997) Figure 11: Main Switchboard (1997) Klotz Associates Project No November 2013 Exhibit 1-2 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

48

49 12,000 Exhibit 2-1 Mont Belvieu Population Projection 10,000 8,000 Population 6,000 4,000 2, Year Census Data Linear (Census Data)

50 Exhibit 2-2 Wastewater Flow Projections based on Population Projection 7,000,000 6,500,000 6,000,000 5,500,000 5,000,000 Wastewater (gallons per day) 4,500,000 4,000,000 3,500,000 3,000,000 2,500,000 2,000,000 1,500,000 1,000, , Year Total ADF Flow Peak 2-Hour Flow Linear (Total ADF Flow) Linear (Peak 2-Hour Flow) Linear (Peak 2-Hour Flow) Linear (Peak 2-Hour Flow)

51 80 Exhibit 2-3 Influent Pump Station Evaluation Pumps: KSB KRT K Head (Feet) pump 3.6 MGD pumps6 MGD Flow Rate (GPM) Min TDH with 1 pump running Max TDH with 1 pump running Pump Curve - 1 pump Pump Curve - 2 pumps Min TDH with 2 pumps running Max TDH with 2 pumps running

52

53

54

55

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57 Table 2-1 Major Equipment Inventory Table Equipment Quantity Manufacturer Location Year Notes Submersible Pumps 2 KSB Lift Station 2009 KRT K /326XG-S 40 HP Rotomat Screen 1 Hycor Helisieve (Parkson) Headworks 1997 Model HLS500 SN: A Hydrogritter 1 Unknown Headworks foot ID Clarifier 1 Peabody Wells Clarifier /2 HP motor, Winsmith Gear (refurbished) 50-foot ID Clarifier 1 Hi-Tech Clarifier /4 HP, Winsmith Gear 50-foot ID Clarifier 1 Hi-Tech Clarifier /4 HP, Winsmith Gear (refurbished) Oxidation Ditch Brush Aerators 1 2 Unknown Aeration foot rotors and Dodge Gear Box Oxidation Ditch Brush Aerators 2 3 Unknown Aeration foot rotors, 30 HP Lincoln motors and Dodge Gear Box Oxidation Ditch Motor Control Center 1 EG Controls Aeration UV Disinfection System 1 Infilco Degremonte Inc. Headworks 1997 Aquaray 40 Sludge Dewatering System 1 Aqua-Zyme Disposal System Phone: RAS Pumps 1 Gorman Rupp T-Series Centrifugal Pump Clarifier HP at 400 gpm; SN ; Model T4A35-B/F RAS Pumps 1 Gorman Rupp T-Series Centrifugal Pump Clarifier HP at 400 gpm; SN ; Model T4A35-B/F RAS Pumps 1 Gorman Rupp T-Series Centrifugal Pump Clarifier HP at 400 gpm; SN ; Model T4A35-B/F Blower 2 Roots Headworks HP, 400 cfm at 8 psi (motors replaced and blower refurbished in 1996) Grit Pump Unknown Headworks 1981 nonfunctioning Generator 1 Onan GenSet (Cummings) kw, 375 kva, Model 300 DFCB, INSTALLED DO Analyzer Royce UV System Model 9100 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

58 Table 2-2 Plant Capacity Evaluation per TCEQ Requirements ADF (MGD) 1.5 Peak Flow (MGD) 4.5 Section Cotton Bayou WWTP TCEQ Requirement Clarifier Weir Loading Required Freeboard Total Weir Length (feet) 487 Weir Loading Rate 9,241 <=30,000 Aeration Basin #1 (feet) Aeration Basin #2 (feet) Clarifier (feet) Maximum Organic Loading Rate for Aeration Basin assume influent BOD 5 (mg/l) 200 Average Daily Influent CBOD 5 (PPD) 2,502 Average Daily Influent CBOD 5 (PPD/1,000 CF of aeration) Aeration Volume (CF/1,000) Maximum Clarifier Loading Rates Minimum Clarifier Detention Time Clarifier Area (SF) 6,303 Clarifier Loading Rate (GPD/SF) Clarifier Volume (CF) 77,282 Clarifier Detention Time (hours) Mechanical Aeration Equipment Sizing Clean Water Oxygen Transfer Efficiency (assumption)(o 2 /HP-Hr) 2 2 HP in Ox Ditch #1 80 HP in Ox Ditch #2 90 Pounds of O 2 per Day 8,160 Minimum Pounds of O 2 per Pound of CBOD Mixing Requirement HP in Ox Ditch #1 80 HP in Ox Ditch #2 90 Volume in Ox Ditch #1(CF) 94,555 Volume in Ox Ditch #2(CF) 116,785 Min HP per 1,000 CF of Volume in Ox Ditch # Min HP per 1,000 CF of Volume in Ox Ditch # Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

59 Table 2-3 Discharge Monitoring Reports Summary 2011 and 2012 Dissolved Oxygen ph Total Suspended Solids Avg Total Suspended Solids Max Total Suspended Solids Nitrogen, Ammonia Avg Nitrogen, Ammonia Max Nitrogen, Ammonia Avg Flow Max Flow Geometric Avg Ecoli DO TSS TSS TSS CBOD 5 CBOD 5 CBOD 5 mg/l ppd mg/l mg/l ppd mg/l mg/l MGD MGD MPN MPN ppd mg/l mg/l TCEQ Permit 4 MIN January < >9 >2420 <12.96 <2 <2 February <9.7 < <.64 < <4 46 <9.29 <2 <2 March <11.54 < <4.89 < <6 365 <24.84 <6 27 April <.42 < < <8.18 <2 <2 May <0.42 <0.1 < <7 461 <10.39 <2 5 June <0.47 < < <9.39 <2 3 July <8.21 < <0.49 < < <8.5 <2 2 August <0.4 <0.1 < >12 >2420 <8.28 <2 3 September <7.87 < <0.44 < <3 70 <7.98 <2 <2 October <7.79 < <0.85 < < <7.66 <2 <2 November <10.83 < <0.94 < <5 548 <7.85 <2 <2 December 2012 January <11.72 < <0.83 < <4 152 <14.58 <3 8 February <12.87 < <1.8 < >7 >2420 <12.35 <2 <2 March <10.74 < <1.14 < <5 411 <31.81 <6 26 April <10.24 < <1.89 < <3 49 <18.6 <3 15 May <8.88 < <0.53 < < <9.28 <2 <2 June <0.5 < >25 >2420 <7.78 <2 2 July <7.73 < <0.44 < >52 >2420 <10.94 <3 9 August <7.98 < <0.49 < < <9.22 <2 3 September <6.42 < <0.65 < <9 980 <8.41 <2 <2 October <5.67 < <0.42 <0.1 < < <8.95 <2 3 November <0.4 <0.1 < <5 51 <7.94 <2 <2 December Dissolved Oxygen ph Total Suspended Solids Avg Total Suspended Solids Max Total Suspended Solids Nitrogen, Ammonia Avg Nitrogen, Ammonia TCEQ PERMIT Max Nitrogen, Ammonia Avg Flow Max Flow Geometric Avg Ecoli Daily Max Ecoli Daily Max Ecoli Daily Avg CBOD 5 Daily Avg CBOD 5 Daily Max CBOD 5 Daily Max CBOD 5 DO TSS TSS TSS CBOD 5 CBOD 5 CBOD 5 mg/l ppd mg/l mg/l ppd mg/l mg/l MGD MGD MPN MPN ppd mg/l mg/l 4 MIN 9-Jun Daily Max CBOD 5 Daily Max CBOD 5 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

60 Table 3-1 Headworks Alternative 1 Engineer's Opinion of Probable Construction Cost Description of New Headworks Units Quantity Total Unit Price Total Line Item Price Concrete Concrete Structure for Headworks CY 140 $600 $84,000 $84,000 Equipment Hycor Helisieve In-Channel Fine Screen EA 2 $112,413 $224,825 Static Bar Screen EA 1 $3,968 $3,968 Weir Gate for Grit Chamber By-Pass EA 1 $10,580 $10,580 Headworks Channel Slide Gates EA 6 $5,951 $35,708 Aluminum Stairs for Headworks Riser 19 $331 $6,282 $275,080 Piping 14" Piping from Lift Station to Headworks LF 70 $86 $6,017 14" - 45 degree bend EA 2 $661 $1,323 14" tee EA 1 $794 $794 18" Piping from Headworks to Aeration Basins LF 315 $132 $41,659 18" - 90 degree bend EA 6 $2,645 $15,870 $65,662 Electrical 25% $68,770 Subtotal Contingency 30% Total $493,512 $148,054 $642,000 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

61 Table 3-2 Headworks Alternative 2 Engineer's Opinion of Probable Construction Cost Description of Headworks Rehabilitation Units Quantity Total Unit Price Total Line Item Price General Remove Sludge CY 20 $150 $3,000 Remove Comminutor and Hydrogrit Equipment LS 1 $5,000 $5,000 $8,000 Concrete Concrete Repairs LS 1 $12,000 $12,000 $12,000 Equipment Hycor Helisieve In-Channel Fine Screen EA 2 $112,413 $224,825 $224,825 Electrical 25% $56,206 Subtotal Contingency 30% Total $301,031 $90,309 $392,000 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

62 Table 3-3 Energy Savings for Premium Efficiency Motors Power cost $0.06 (1) Equipment Quantity Rated HP per Each Operating HP (75% of rated power) Total Operating HP Motor Efficiency Kw Hrs Cost per Day Annual Energy Costs Existing Oxidation Ditch Motors Ox Ditch # (2) (4) 24 $73.2 $26,720 Ox Ditch # (2) (4) 24 $82.4 $30,060 Total $56,779 Proposed Premium Efficiency Oxidation Ditch Motors Ox Ditch # (3) (4) 24 $ ,764 Ox Ditch # (3) (4) 24 $ ,860 Total $52,624 Annual Energy Savings for Premium Efficiency Motors 7% Notes: (1) Information provided by City (2) Assumption based on motors at end of design life (3) Assumption based on premium efficiency motors (4) HP x /motor efficiency = KW Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

63 Table 3-4 Disinfection Equipment Alternative 1 Engineer's Opinion of Probable Construction Cost Description Units Quantity Total Unit Price Total Line Item Price Concrete Concrete for UV Channels CY 95 $500 $47,500 $47,500 Equipment 18" Piping from Clarifier to UV LF 40 $132 $5,290 21" Piping from Clarifier to UV LF 45 $165 $7,439 Manhole EA 1 $6,613 $6,613 UV Disinfection System LS 1 $228,660 $228,660 UV Channel Slide Gates 1' x 5' EA 4 $6,613 $26,450 $274,452 Electrical and Control Electrical (25% of the total cost) $68, $68,613 Subtotal Contingency 30% Total $390,565 $117,169 $510,000 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

64 Table 3-5 Disinfection Equipment Alternative 2 Engineer's Opinion of Probable Construction Cost Description Units Quantity Total Unit Price Total Line Item Price Concrete Concrete Chlorine Disinfection Basins CY 165 $600 $99,000 Precast Concrete12' x 16' Building, installed LS 195 $173 $33,638 $132,638 Equipment 18" Piping LF 40 $132 $5,290 21" Piping from Clarifier to Chlorine Contact Basins LF 45 $165 $7,439 Manhole EA 1 $6,613 $6,613 Chlorination Basin Slide Gates 4' x 6' EA 4 $11,903 $47,610 Chlorine Contaiment System EA 1 $165,313 $165,313 Chlorination System LS 1 $10,712 $10,712 Dechlorination System LS 1 $10,712 $10,712 $253,689 Electrical and Control Electrical (15% of the total cost) $38,053 $38,053 Subtotal Contingency 30% Total $424,379 $127,314 $560,000 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

65 Table 3-6 Disinfection Alternatives 1 and 2 Net Present Value Disinfection Alternative 1 (UV Disinfection) Equipment Capital Cost Annual Energy Cost Annual Maintenance Cost Amortized (5%) Equipment Cost $510,000 Disinfection Alternative 2 (Chlorination Disinfection) Equipment Capital Cost $560,000 Total Annual Cost Annual Energy Cost Annual O&M Cost Amortized (5%) Equipment Cost Total Annual Cost Annual Expense $2,775 $52,372 $40,924 $96,071 Annual Expense $1,159 $44,800 $44,936 $90,895 Lifespan of Equipment (years) Inflation Rate Total Present Net Value (1) including Capital Cost, Power Cost and Peak Flow, gal/year Cost per 1,000 gallons of plant flow 20 Lifespan of Equipment (years) % Inflation Rate 3.5% $1,413,000 Total Present Net Value including Capital Cost, Power Cost $1,336, ,000,000 Peak Flow, gal/year 195,000,000 $7.25 Cost per 1,000 gallons of plant flow $6.85 Notes: Notes: (1) NPV = (1) NPV = (1+) (1+) k = inflation rate j = year in which expense occurs n = number of years k = inflation rate j = year in which expense occurs n = number of years Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

66 Table 3-7 Disinfection Alternatives 1 and 2 Operations and Maintenance Costs Alternative 1: UV Disinfection System Alternative 2: Chlorination / Dechlorination Energy Operations and Maintenance for UV Disinfection System Units Quantity Total Unit Price Total Line Item Price Operations and Maintenance for Chlorination System Units Quantity Total Unit Price Total Line Item Price Energy UV Disinfection System KW 5.28 $2,775 Booster Pump HP 2 $2,318 Disinfection Disinfection Annual Lamp Replacement EA 18 $314 $5,652 Chlorine 150# Cylinders Cyl/YR 48 $150 $7,200 Sulfur Dioxide 150# Cylinders Cyl/YR 48 $175 $8,400 Labor Full-time Equivalents at $20/hr, 8-hr days for 365 days per year Annual Cost $8,427 EA 0.8 $58,400 $46,720 Labor Full-time Equivalents at $20/hr, 8-hr days for 365 days per year Annual Cost $17,918 EA 0.5 $58,400 $29,200 Total $55,147 Total $47,118 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

67 Table 3-8 UV Disinfection and Chlorination/Dechlorination Comparison Ultraviolet Disinfection Pros No toxic chemical to ship or store Small footprint Lower initial capital cost No chlorine residual to harm aquatic wildlife Cons Higher Operation and Maintenance cost Chlorination/Dechlorination Simple, well-established process Lower life cycle cost Requires shipping and storing of toxic chemicals Requires a large footprint for contact basin Chlorine residual is toxic to aquatic life Uncertainty for future environmental regulations Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

68 Table 3-9 WWTP expanssion Options comparison Option 1 Option 2 Pros Lower total construction cost is approximately 20% lower New high efficiency 1.5 MGD facility now Earlier compliance with TPDES permit by 03/15 Lower initial O & M cost Lower ultimate O & M costs (less process units) No overlapping equipment Cons Higher initial O & M cost because of the equipment age Non recoverable equipment cost (approximately $500k) Higher total construction cost Higher ultimate O & M costs (more process units) Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

69 Table 5-1 Engineer's Opinion of Probable Construction Cost of First Priority Items Description Units Quantity Base Unit Price General Contractor OH & Profit Multiplier Sub Contractor OH & Profit Multiplier Installation Multiplier Total Unit Price Total Line Item Price General Requirements Other General Requirements (5% of Total Cost) LS 1 $112, $112,000 $112,000 Site Work Subtotal General Requirements LS 1 $50, $50,000 $50,000 $162,000 Concrete Concrete Headworks Structure CY 140 $ $600 $84,000 Concrete for UV Channels Subtotal Concrete CY 95 $ $500 $47,500 $131,500 Equipment Hycor Helisieve In-Channel Fine Screen EA 2 $85, $112,413 $224,825 Static Bar Screen EA 1 $3, $3,968 $3,968 Weir Gate for Grit Chamber By-Pass EA 1 $8, $10,580 $10,580 Headworks Channel Slide Gates EA 6 $4, $5,951 $35,708 14" Piping from Lift Station to Headworks LF 70 $ $86 $6,017 14" - 45 degree bend EA 2 $ $661 $1,323 14" tee EA 1 $ $794 $794 18" Piping from Headworks to Aeration Basins LF 315 $ $132 $41,659 18" - 90 degree bend EA 6 $2, $2,645 $15,870 Clarifier Launder Covers EA 3 $38, $50,784 $152,352 Trojan UV Disinfection System LS 1 $172, $228,660 $228,660 UV Channel Slide Gates 1' x 5' EA 4 $5, $6,613 $26,450 Aluminum Stairs for Headworks Riser 19 $ $331 $6,282 Manhole EA 1 $5, $6,613 $6,613 18" Piping from Clarifier to Chlorine Contact Basins LF 40 $ $132 $5,290 21" Piping from Clarifier to Chlorine Contact Basins Subtotal Equipment LF 45 $ $165 $7,439 $773,828 Electrical and Control Electrical (25% of total cost) $241, In-Plant SCADA System $100,000 New Electrical Building $100,000 Subtotal Electrical and Control $441,332 Subtotal $1,568,660 Contingency 30% $470,598 Total $2,040,000 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

70 Table 5-2 Engineer's Opinion of Probable Construction Cost of Recommended Items of Second Priority Items Description Units Quantity Base Unit Price General Contractor OH & Profit Multiplier Sub Contractor OH & Profit Multiplier Installation Multiplier Total Unit Price Total Line Item Price General Requirements Other General Requirements (5% of Total Cost) LS 1 $90, $90,000 $90,000 Site Work Subtotal General Requirements LS 1 $25, $25,000 $25,000 $115,000 Demolition Demolition Abandoned Lift Station, Adjacent Building, headworks, UV and chlorine contact basins Subtotal Demolition LS 1 $60, $60,000 $60,000 $60,000 Concrete Concrete Slab for GritCup and SpiraSnail CY 10 $ $500 $5,000 Concrete Structure for Disk Filter Subtotal Concrete CY 105 $ $600 $63,000 $68,000 Equipment Influent Pump Station LS 1 $75, $99,188 $99,188 Clarifier Mechanism EA 1 $118, $156,716 $156,716 Headcell Grit Chamber, GritCup and Spirosnail EA 1 $226, $298,885 $298,885 Grit Pump EA 2 $26, $34,385 $68,770 Oxidation Ditch Motors EA 3 $3, $4,065 $12,196 Oxidation Ditch Motors EA 2 $4, $5,290 $10,580 Ashbrook Disk Filter Subtotal Equipment LS 1 $465, $615,888 $615,888 $1,262,223 Electrical and Control Electrical (15% of equipment cost) $189, Subtotal Electrical and Control $189,333 Subtotal 30% Contingency Total $1,505,223 $450,769 $1,960,000 Klotz Associates Project No November 2013 City of Mont Belvieu Cotton Bayou WWTP Rehabilitation PER

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131 Hycor Helisieve In-Channel Fine Screen Model HLS All-in-one screening, conveying and dewatering system Combines screening, conveying and dewatering into one reliable, automatic, cost-efficient system. Durable spiral brush keeps the screen clean. Close-up view of the new drain box with optional explosion-proof wiring. The Helisieve system uses shaftless spiral technology to perform screening, solids conveying and dewatering in one cost efficient operation. The heart of the system is a heavyduty carbon steel spiral that conveys screenings to the dewatering zone and dewaters them to acceptable landfill requirements. The spiral is fabricated in a continuous flight to assure a strong, stable structure. It is surrounded by a stainless steel tube that encloses screenings, minimizes odors and provides clean, hygienic operation. The Helisieve s shaftless core handles a greater volume of solids than shafted screw designs. Fibrous and bulky solids have a clear, barrierfree path to the dewatering zone. The shaftless design also eliminates the need for maintenance-intensive bottom support bearings and intermediate hanger bearings. The Helisieve system performs three operations in one: Screening. Influent moves into the fine screening area where the perforated screen removes solids. A spiral-mounted brush keeps the screen surface clean. Conveying. The spiral moves the screenings upward through the transport area. There is no shaft to restrict flow or become entangled with long, stringy solids. Dewatering. Solids are dewatered by compression against a plug of material formed in the flightless zone. Liquid is discharged through a perforated screen. A removable drain box simplifies access to the screen and solids plug. Solids at 40% dry weight are common.

132 Put Hycor shaftless spiral technology to work for you! Compact and easy to install shipped l assembled, with flexible seals, for quick channel positioning, or in its own tank housing. Economical one low horsepower gearmotor drives the entire system. Helisieve Plus in-tank system for pumped flows Screens, conveys and dewaters like the Helisieve unit, but is self-contained in a stainless steel tank. Suitable for industrial and municipal processes. Up-front serviceability pivots out for easy access for above-channel maintenance. Low maintenance no troublesome submerged end bearings or intermediate hanger bearings. Cost-effective integrates three processes: screening, conveying and dewatering, in one compact unit. Efficient the shaftless spiral provides greater conveying capacity and eliminates entanglement of solids around a shaft. Screen openings 0.125" and 0.250" (6 mm) diameter and.040" x.4" perforated slots. Other opening sizes are possible. Lowers disposal costs dewatering reduces weight and volume. Forty percent dry weight solids are common. Hygienic screens are enclosed by the stainless steel tube and can be discharged directly into sealed containers to minimize odor and handling. Optional bagger assemblies simplify disposal. Shown with optional heat jacket. Designed to last rugged steel alloy spiral fabricated in a continuous flight to tight manufacturing tolerances. Parkson Florida Parkson Illinois Parkson Michigan Parkson Canada Parkson do Brasil Ltda. Corporate 562 Bunker Court 2001 Waldorf St. NW St-Jean Calçada dos Mirtilos NW 62nd Street Vernon Hills IL Suite 300 Pointe-Claire QC Barueri Sao Paulo Fort Lauderdale FL Grand Rapids MI H9R 5P1 CEP ISO 9001:2000 Certified Quality Management System P.O. Box Fort Lauderdale FL P F P F Canada P F Brazil P/F P/F P AN AXEL JOHNSON INC. COMPANY F HLS , 2004, 2002 Parkson Corporation 1999, 1995 Hycor Printed in the U.S.A. on Recycled Paper 01/07

133 Proposal Package Grit Removal System Mont Belvieu, TX WWTP Engineer: Klotz Associates 1160 Dairy Ashford, Suite 500 Houston, TX Representative: HRM Environmental 1426 Stone Trail Drive Sugar Land, TX Manufacturer: Hydro International 2925 NW Aloclek Suite 140 Hillsboro, OR (503) ph (503) fax Water & Wastewater Solutions Grit Removal at its Finest

134 Water & Wastewater Solutions March 14, 2013 Ms. Monica Stiggins, P.E. Klotz Associates 1160 Dairy Ashford, Suite 500 Houston, TX RE: Headworks Grit Control & Dewatering System Mont Belvieu, TX WWTP File # A Dear Ms. Stiggins: Thank you for your interest in Hydro International. We are pleased to present our proposal for a Eutek HeadCell Grit Removal, Classification, Washing, and Dewatering System. Hydro International is dedicated to providing innovative, high performance grit removal equipment through superior engineering, high-quality products and unmatched customer service. Our extensive experience includes thousands of installations throughout the world. Grit is continually introduced into collection systems, but is not uniformly carried to treatment facilities. As flows increase, the grit load entering the plant elevates. Once in the treatment plant, where velocities are slower than in the collection system, grit will deposit in processes, disrupting systems, decreasing equipment longevity, and increasing maintenance costs. The Eutek HeadCell Grit Removal System offers many benefits over conventional grit removal systems including: Removing fine grit protects equipment and processes from abrasive wear and sedimentation All-hydraulic design with no moving parts, minimizing operating and maintenance costs Small footprint system capable of high efficiency solids capture and removal Robust design allowing long component life with minimal wear Complete grit system with no weak link through capture to washing/classification to dewatering Minimal headloss at peak flows fits most existing flow profiles Structured flow ensures maximum utilization of tray surface area and equal surface loading rates throughout the system Large surface area with short settling distances ensures higher performance in a smaller footprint Compact, yet expandable design capable of high efficiency solids capture and removal Continuous boundary layer flow over hydrophobic surfaces prevents grease build-up We sincerely appreciate your interest in our equipment and look forward to working with you on this project. As you progress with the design, we can quickly generate CAD drawings, budget updates, and specifications as well as review equipment layouts and specifications for your particular application. Reference lists are available through your local representative. If you have any questions or concerns, do not hesitate to contact us. Regards, Hydro International Lindsey Schweitzer Sr. Applications Engineer Hydro International Water & Wastewater 2925 NW Aloclek Suite 140, Hillsboro, OR Tel: (503) Fax: (503) Web:

135 Performance Objective Hydro International is pleased to propose the following Eutek HeadCell grit removal, washing, and dewatering system to be installed in an existing plant. Each component of the grit removal system is designed to remove 95% of all grit 106 or better at a peak flow. The complete grit removal system shall remove 85-95% of all grit particles, with specific gravity of 2.65, greater than or equal to 106 micron at a peak flow of 4.5 mgd. Proposed Equipment Summary Eutek HeadCell Grit Concentrator The Eutek HeadCell is an all-hydraulic grit concentrator, which uses vortex flow and a stacked tray design to efficiently capture and settle fine grit via large surface area and short settling distances. The unit can be installed into the process flow, downstream of screening, in any system where limited head is available. The unit requires no external power source, has no internal moving parts, is self-cleaning, and has a compact modular construction. Wide turndown ratios can be accommodated in the Eutek HeadCell when it is combined with Hydro s high performance washing system. Quantity:... 1 Size:... 9 diameter Number of Trays per Unit:... 5 Surface Area/Unit: ft 2 Loading rate at Peak Flow: gpm/ft 2 Performance:... 95% removal of all grit (specific gravity 2.65) 106 peak flow Performance:... 95% removal of all grit (specific gravity 2.65) 75 average flow Average Flow/Unit: mgd with no more than 1" headloss Peak Flow/Unit: mgd with 12" headloss Discharge:... Weir Underflow Connection:... 4 NPW Connection:... 1 NPT NPW Requirement:... Continuous psig (contact Hydro for alterative options) Materials of Construction: SS Support Structure/Duct/Underflow... Low Density Polyethylene Trays Weight Dry (approximate):... 2,000 lbs 2012 Hydro International Mont Belvieu, TX WWTP 1

136 GritCup Grit Washing/Classification Unit The GritCup is a all hydraulic, high efficiency vortex separator that effectively captures, classifies, and removes grit, sand, and high density fixed solids from wastewater, raw water, or grit slurries. Utilizing vortex motion and boundary layer effects to aid in organics removal the GritCup discharges a clean (low organic) grit slurry, which emits fewer odors and requires only dewatering to meet stringent disposal regulations. Quantity:... 1 Size:... 30" diameter Performance:... 95% removal of all grit (specific gravity 2.6) 106 microns within flow range Design Flow/Unit: gpm with 27" headloss Influent Solids Concentration: % Influent Connection:... 4 flanged pipe Effluent Connection:... 6 flanged pipe Underflow Connection:... 4 flanged pipe Material of Construction: SS Weight Dry/Wet (approximate): /1200 lbs Operation Time:... Continuous or a minimum of minutes SpiraSnail Dewatering Unit The SpiraSnail uses a slow moving screw auger to dewater grit without re-suspending fine grit particles into the clarifier overflow. The large conical clarifier with tangential inlet and internal baffle enhances the settling of fine particles. The SpiraSnail dewaters and retains settleable high-density solids as small as 106 micron from municipal grit slurries or industrial abrasive slurries. The unit is capable of producing dry grit with low organic content suitable for landfill disposal. Quantity:... 1 Capacity:... 1 cy/hr Screw Diameter: Clarifier Size: Min. Free Water Surface Area: ft 2 Motor:... 1hp, TENV, 460V/3 phase/ 60 Hz Overflow Connection:... 6 flanged pipe Drain Connection:... 2 NPT pipe Body Material: SS Weight Dry/Wet (approximate):... 2,800 / 6,300 lbs Performance:... 90% removal of all grit (specific gravity 2.65) microns with less than 20% volatile solids and greater than 60% total solids Control Panel The panel shall contain all timers, starters, switches, and indicator lights to operate one (1) SpiraSnail unit, and one (1) Grit Pump run relay in either fully automated or manual mode. Quantity:... 1 Enclosure Material: SS 2012 Hydro International Mont Belvieu, TX WWTP 2

137 Enclosure Type:... NEMA 4X Power Supply: V/15 amp/3-phase Control Logic:... Relay Logic Grit Pump Control:... Call for Relay System Hydraulics System hydraulics is the responsibility of the design engineer. Hydro International can provide information on Eutek HeadCell hydraulics and pumping and piping FAQ s to assist the engineer in determining system hydraulics and pump requirements, upon request. Design Recommendations 3/4 or finer screening prior to the grit removal system Estimated grit load a peak flow 0.54 yd 3 /hr 2 3 ft/s channel velocities at peak flow as recommended by industry design manuals 4 7 ft/s grit slurry pipe velocities as recommended by industry design manuals Incorporate a drain line, piped to a floor drain, in the grit dumpster to allow for further dewatering prior to disposal A minimum 18 of access clearance around all equipment and minimum 3 of access clearance above equipment Operators find that it is useful to locate a spray hose adjacent to the equipment so that they can spray all equipment down during an inspection Incorporate a minimal access platform to facilitate inspection access to the top of the equipment Intermittent operation of grit pump system may be an option. Contact Hydro for further information. Grit pumps may require NPW for seal flushing. Requirements for flushing are dependent on the make, model, and seal type of the pump specified by the engineer. Start-up One (1) factory trained representative, two (2) trips, for start-up and instruction services as required totaling four (4) days. Quote Validity: 30 days Exclusions Any item(s) not specifically described above are excluded and are not to be supplied by Hydro International including but not limited to the following: Erection and installation Anchor Bolts Interconnecting piping and valving not expressly stated above Pipe connections and fittings not expressly stated above All pipe supports, hangers and braces Controls, switches, control panels and instrumentation of any kind not expressly stated above Wiring and conduit Grit pump(s) Options Field or touch-up paint, painting, blasting and touch-up of surface finish Spare parts not specifically stated above Unloading, hauling and storage charge Lubricating oil and greases Grit study, field performance testing, laboratory testing and sample collection and analysis All concrete and grouting work Insulation and heat tracing of any kind Seismic analysis Grit dumpsters Quotes will be provided upon request for the following optional features: Stainless steel valve bodies Upgrade 304 to 316 Stainless Steel Additional field days for startup or training Seismic Certification Explosion proof upgrade Grit Pump(s) PLC Based Control Panel Extended Warranty 2012 Hydro International Mont Belvieu, TX WWTP 3

138 Warranty Hydro International s Standard Warranty shall apply per the Terms and Conditions of Sale. Delivery Please allow 4 weeks after receipt of purchase order for approval drawings. Shipment is typically a maximum of 16 weeks after receipt of "Approved" or "Approved As Noted, Resubmittal Not Required" submittal package. Price includes truck freight to jobsite, but does not include any state or local taxes if required. Terms & Conditions This proposal is made pursuant to Hydro International s standard Terms & Conditions of Sale, attached hereto and made a part hereof. Contacts Local Representative: Mr. Scott Hawkins HRM Environmental 1426 Stone Trail Drive Sugar Land, TX Phone: (281) Fax: (281) scott@hrmenv.com 2012 Hydro International Mont Belvieu, TX WWTP 4

139 DO NOT CHANGE DUCT LAYOUT OR PIPE ORIENTATION WITHOUT CONSULTING HYDRO INTERNATIONAL PROJECTION 1. ALLOW GRIT PUMP TO FULLY DRAIN HEADCELL TANK. 2. PLANT FLOW BYPASS RECOMMENDED TO ALLOW THE HEADCELL TO BE TAKEN OUT OF SERVICE IF MAINTENANCE IS REQUIRED. 3. CLOCKWISE & COUNTERCLOCKWISE UNITS ARE AVAILABLE. 4. ALTERNATE EFFLUENT CONFIGURATIONS ARE AVAILABLE. 5. THE GRIT PUMP SUCTION LINE SHOULD BE DESIGNED FOR A 4-7 ft/s [ m/s] LINE VELOCITY. 1' [0.30 m] HEADLOSS 6'-6 1/2" [1.99 m] EFFLUENT WEIR 12' [3.66 m] TANK ID EFFLUENT WEIR 6. FLUIDIZING WATER REQUIREMENTS 11 gpm [0.7 l/s] FOR 4', 6', AND 9' HEADCELL 20 gpm [1.3 l/s] FOR 12' HEADCELL 7. UNDERFLOW PIPE CONNCETION CAN BE SUPPLIED AT 0, 22.5, OR 45 ANGLE. 2'-10 1/2" [0.88 m] 9'-5" [2.87 m] 0-45 DEGRITTED EFFLUENT 4" (100mm) DIA. UNDERFLOW TO GRIT PUMP (SEE NOTE 5) 10'-11 1/2" 1" [25mm] DIA. FLUIDIZING [3.34 m] SUPPLY WATER LINE (SEE NOTE 6) 1'-8" [0.51 m] INFLUENT 10" [0.25 m] BY CONTRACTOR BY CONTRACTOR 11 1/2" [0.29 m] 12' [3.66 m] Date Drawn By Title - SR 9/8/2010 FIRST RELEASE REV BY DATE DESCRIPTION REVISION HISTORY SR Checked By Scale 9/8/2010 1/4" = 1'0" Approved By EUTEK HEADCELL PROPOSAL DRAWING 9' DIAMETER 5 TRAY 106 MICRON - - A A UNDERFLOW PIPE SUPPLIED BY OTHERS BY CONTRACTOR FLANGED CONNECTION (SEE NOTE 7) GROUT FILL UNDERFLOW INSERT GROUTED IN PLACE SCREENED SEWAGE BLOCK OR STEP 12'-6 1/2" [3.82 m] w a s t e w a t e r SECTION A-A ANY WARRANTY GIVEN BY HYDRO INTERNATIONAL WILL APPLY ONLY TO THOSE ITEMS SUPPLIED BY IT. ACCORDINGLY HYDRO INTERNATIONAL CANNOT ACCEPT ANY RESPONSIBILITY FOR ANY STRUCTURE, PLANT, OR EQUIPMENT, (OR THE PERFORMANCE THERE OF) DESIGNED, BUILT, MANUFACTURED, OR SUPPLIED BY ANY THIRD PARTY. HYDRO INTERNATIONAL HAVE A POLICY OF CONTINUOUS DEVELOPMENT AND RESERVE THE RIGHT TO AMEND THE SPECIFICATION. HYDRO INTERNATIONAL CANNOT ACCEPT LIABILITY FOR PERFORMANCE OF ITS EQUIPMENT, (OR ANY PART THEREOF), IF THE EQUIPMENT IS SUBJECT TO CONDITIONS OUTSIDE ANY DESIGN SPECIFICATION. HYDRO INTERNATIONAL OWNS THE COPYRIGHT OF THIS DRAWING, WHICH IS SUPPLIED IN CONFIDENCE. IT MUST NOT BE USED FOR ANY PURPOSE OTHER THAN THAT FOR WHICH IT IS SUPPLIED AND MUST NOT BE REPRODUCED, IN WHOLE OR IN PART, WITHOUT PRIOR PERMISSION IN WRITING FROM HYDRO INTERNATIONAL HYDRO INTERNATIONAL DO NOT SCALE DRAWING UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN INCHES. TOLERENCES ARE: FRACTIONS `1/4 DECIMALS `0.25 ANGLES `1~ Approximate Weight: 2000 LBS Finish: - Treatment: - Sheet Size: B Sheet: 1 OF1 Next Assembly: Ref. No. PROPOSAL 9' 5 Tray 106 HC - Drawing No NW Aloclek Drive Suite 140 Hillsboro, OR Tel: (503) Fax: (503) sales@eutek.com - Rev

140 REG-U-FLO VORTEX VALVE FLOW CONTROLLER n12" VENT LID PROJECTION NOTES: REMOVABLE LID INSPECTION HATCH 1. PROVIDE ADEQUATE CLEARANCE AROUND SYSTEM FOR OPERATION AND MAINTENANCE 2. EQUIPMENT WEIGHTS: GRITCUP: DRY: 650 LBS.; WET: 1,650 LBS. SPIRASNAIL: DRY: 2,800 LBS.; WET: 6,300 LBS. 78 1/2 NOM 19 3/8 19 3/8 n4" NOMINAL FLANGED INTLET ISOMETRIC VIEW 12 15/ " ACCESS CLEARANCE TYP n6" NOMINAL FLANGED OUTLET 249 1/2 PLAN VIEW n30"gritcup, CLOCKWISE SPIRASNAIL DEWATERED GRIT A SR 8/27/2012 FIXED WEIGHTS - SR 4/3/2012 FIRST RELEASE REV BY DATE DESCRIPTION REVISION HISTORY Date Drawn By Title SR Checked By Scale 4/3/2012 NTS - - Approved By 30 INCH DIA. GRITCUP w/ SPIRASNAIL /16 INFLUENT CL n6" NOMINAL FLANGED OUTLET 120 7/8 98 5/8 EFFLUENT ELEVATION 53 15/16 EFFLUENT ELEVATION 25 INCLINE 78 3/ /16 PROPOSAL DRAWING w a s t e w a t e r END VIEW 35 15/ / / /4 SIDE VIEW ANY WARRANTY GIVEN BY HYDRO INTERNATIONAL WILL APPLY ONLY TO THOSE ITEMS SUPPLIED BY IT. ACCORDINGLY HYDRO INTERNATIONAL CANNOT ACCEPT ANY RESPONSIBILITY FOR ANY STRUCTURE, PLANT, OR EQUIPMENT, (OR THE PERFORMANCE THERE OF) DESIGNED, BUILT, MANUFACTURED, OR SUPPLIED BY ANY THIRD PARTY. HYDRO INTERNATIONAL HAVE A POLICY OF CONTINUOUS DEVELOPMENT AND RESERVE THE RIGHT TO AMEND THE SPECIFICATION. HYDRO INTERNATIONAL CANNOT ACCEPT LIABILITY FOR PERFORMANCE OF ITS EQUIPMENT, (OR ANY PART THEREOF), IF THE EQUIPMENT IS SUBJECT TO CONDITIONS OUTSIDE ANY DESIGN SPECIFICATION. HYDRO INTERNATIONAL OWNS THE COPYRIGHT OF THIS DRAWING, WHICH IS SUPPLIED IN CONFIDENCE. IT MUST NOT BE USED FOR ANY PURPOSE OTHER THAN THAT FOR WHICH IT IS SUPPLIED AND MUST NOT BE REPRODUCED, IN WHOLE OR IN PART, WITHOUT PRIOR PERMISSION IN WRITING FROM HYDRO INTERNATIONAL HYDRO INTERNATIONAL DO NOT SCALE DRAWING UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN INCHES. TOLERENCES ARE: FRACTIONS `1/16 DECIMALS `.06 ANGLES `1~ 59 1/8 Approximate Weight: N/A Finish: - - Treatment: Sheet Size: B Sheet: 1 OF1 Next Assembly: Ref. No. Drawing No NW Aloclek Drive Suite 140 Hillsboro, OR Tel: (503) Fax: (503) sales@eutek.com PROPOSAL GC30-SPS Rev A

141 Water & Wastewater Solutions North Ameri ican Grit Gradat tions Hydro International is pleased to announce the availability of national and regional grit gradation data. This data, which has been compiled from over 120 tests across North America, contains average physical size dataa as well as settling velocity (SES) data, making it the most comprehensive information available on grit and its behavior. Virtually all conventional grit removal processes rely on gravity sedimentation to achieve the separation of grit from wastewater. Most conventional grit removal processes aree designed based on the assumption that grit is spherical and has a specific gravity However, not all grit maintains a specific gravity of 2.65 and other factors such as shape and encapsulatio n by fats, oils and grease significantly impact its settling velocity. Therefore, the best means to analyze grit is to determine the settling velocity for given particle size ranges. Settling velocity data can be correlated to the measured settlingg velocity of a clean sand sphere. The settling velocity is expressed as the Sand Equivalent Size (SES), whichh is the sand particle size having the same settling velocity as the more buoyant grit particle. The correlatedd particle size, or Sand Equivalent Size can then be used for design of the grit removal process. When settling velocity is considered in the design actual removal efficiency of grit particles can be estimated more realistically. Dataa is available for the following regions: Region States / Provinces Included Northeast ME, VT, NH, MA, RI, NY, CT Mid-Atlantic PA, NJ, MD, DE, DC, VA,, WV Southeast NC, SC, GA, AL, FL, MS North Central MO, KS, KY, IN, OH, IL, MI, WI, IA, MN, ND, SD, NE South Central TN, AR, OK, TX, LA West WA, OR, CA, AK, HI, AZ, NV, NM, CO, ID, MT, UT, WY Western Canada AB, MB, SK Ontario Canada ON State data is available for individual states where more than 5 data points are available; those states currently include: Georgia, Texas, Florida, and Virginia. Hydro International Water & Wastewater 2925 NW Aloclek Suite 140, Hillsboro, OR Tel: (503) Fax: (503) Web:

142 Water & Wastewater Solutions Texas Gradation Texas Average - SES / Physical Data % Passing TX SES Average TX Physical Average Particle Size (µ) % Cumulative Passing TX Physical Average Physical TX SES Average SES Page 9

143 Proposal For: Cotton Bayou WWTP Mont Belvieu, Texas Equipment: COP Cage Drive Clarifiers Engineer: Klotz Associates Represented By: Newman Regency Group S. Kirkwood Rd., Ste. 140 Stafford, TX Contact: Mike Kowalick Phone: (281) Fax: (281) Furnished By: WesTech Engineering, Inc. Salt Lake City, UT Contact: Cameron Young Phone: (801) Fax: (801) WesTech Proposal: Wednesday, March 27, 2013

144 ITEM: "A" - One (1) 55' Dia. and Two (2) 50 Dia. Cage Drive COP TM Clarifiers Mechanism- Model No COPC2 EACH UNIT FURNISHED COMPLETE WITH THE FOLLOWING COMPONENTS: DRIVE UNIT A WesTech premium cage drive unit for a minimum 14,700 ft.-lbs. torque, with steel housing, forged alloy steel precision main bearing and integral spur gear, Cycloidal or helical speed reducer, and 1/2 HP TEFC motor suitable for 230/460 volt, 3 phase, 60 hertz power. OVERLOAD PROTECTION A WesTech Torkmatic over-load control with two (2) adjustable switches for alarm and motor cutout. CENTER COLUMN A cylindrical steel center column, 18" minimum diameter x 1/4" wall thickness DUAL GATE - ENERGY DISSIPATING INLET (DG-EDI) A circular Energy Dissipating Inlet of 3/16" steel plate, with full bottom and multiple dual diffuser gate assemblies designed to gently mix and reduce influent energy as it is introduced into the flocculating feedwell. The outlet assemblies will include baffled openings with dual fully adjustable gates designed to cause incoming flow to impinge upon itself. FLOCCULATING FEEDWELL A circular flocculating feedwell of 3/16" steel plate, designed to promote flocculation of the influent, while preventing short-circuiting and sludge blanket scour. CENTER CAGE A steel box truss center cage to transmit torque from the drive unit to the rake arms RAKE ARMS Two (2) steel rake arms, each with continuous spiral rake blades and adjustable 304 stainless steel squeegees. Blades shall taper from a minimum at the tank wall to a maximum at the tank center, and shall be sized to effectively transport the required sludge volume. SURFACE SKIMMER Two (2) scum skimming mechanisms with steel skimmer blade, recessed hinged wiper assembly, and one (1) 3' wide steel scum box with supports. PLATFORM A steel center platform with floor of 1/4" aluminum checkered plate, and 2-rail 1-1/2" diameter aluminum handrails with kickplate. Project: Cotton Bayou WWTP Mont Belvieu, Texas Date: Wednesday, March 27, 2013 Proposal Number: _Bx1 CY 2

145 WALKWAY A steel beam type Access Bridge extending from the tank wall to the center platform, with 36" wide walkway of 1-1/4" aluminum grating, and 2-rail 1-1/2" diameter aluminum handrails with kickplate. CONTROL PANEL The clarifier controls will be housed in a NEMA 4X, wall-mount stainless steel enclosure. The control panel will be provided with door mounted off/on switch, run light, motor cutout light, and alarm silence and reset pushbuttons. A thermal magnetic combination motor starter with internally reset thermal overloads, control relays, terminal blocks, fuses and fuse blocks and other supporting hardware are provided. A control power transformer will provide 120VAC for internal controls. The transformer will have both primary legs and one secondary leg fused. A top mounted, amber high torque Strobing alarm light and horn shall provide indication of a high torque condition. A door mounted reset pushbutton clears all interlocks after the high torque conditions have been removed. The control panel is wired to accept a single 480VAC, 3 phase, 60 Hertz power feed from the customer. A 3 pole molded case circuit breaker with pad-lockable disconnect handle is provided for short circuit protection. All wiring for field connections will be brought to a terminal strip. All interconnecting wiring is to be by others. HARDWARE 304 stainless steel anchor bolts and assembly fasteners. FIELD SERVICE Include one (1) trip and one (1) day for inspection, startup, instruction of plant personnel, and observation of torque testing. CLARIFICATIONS/COMMENTS The information provided above is for budgetary purposes only. The equipment sizes listed may vary depending on the design criteria and plant flows. All steel items, with the exception of the drive mechanism, will be shipped to the jobsite bare metal with no surface blasting for complete preparation and painting in the field in order to insure unit responsibility. The drive mechanism which will be finished painted in the shop with the manufacturer s recommended paint system. An option for shop blast and prime for the steel items is listed below under Optional Items. Clarifier electrical control panel, lubricants, FRP weirs, scum baffle, scum baffle supports, steel preparation, steel priming, and steel painting are not included in WesTech s scope of supply. Project: Cotton Bayou WWTP Mont Belvieu, Texas Date: Wednesday, March 27, 2013 Proposal Number: _Bx1 CY 3

146 OPTIONAL ITEMS: ITEM: A-1" - SURFACE PREPARATION AND COATING All non-submerged ferrous components to be prepared per SSPC-SP6 and given one (1) coat Tnemec N , 3-7 mils. Submerged ferrous components to be prepared per SSPC-SP10 and given one (1) coat Tnemec N , 3-7 mils. NOTE: ANY ITEM NOT LISTED ABOVE TO BE FURNISHED BY OTHERS. ITEMS NOT BY WESTECH: Electrical wiring, conduit, or electrical equipment, piping, valves, or fittings, shimming material, lubricating oil or grease, shop or field painting, field welding, erection, assembly of component handrail, detail shop fabrication drawings, performance testing, unloading, storage, concrete work, or field service (except as specifically noted). This proposal section has been reviewed for accuracy and is approved for issue: By: Date: March 27, 2013 Project: Cotton Bayou WWTP Mont Belvieu, Texas Date: Wednesday, March 27, 2013 Proposal Number: _Bx1 CY 4

147 BUDGET PRICING ITEM EQUIPMENT PRICE (U.S.) A (1) 55 dia. COP Clarifier Model No COPC2 $112,800 (2) 50 dia. COP Clarifiers Model No COPC2 $191,100 A-1 Blast and Primer per Mechanism $ 10,200 The above mentioned equipment was designed according to the information which we received. The dimensions may vary slightly depending on the plant s actual design parameters. Assumed values may have been used, therefore, all information shall be verified by the Engineer. Unless otherwise indicated, prices listed are for equipment only. All optional items will be offered with the purchase of the scoped equipment only. No optional items will be sold separately. Prices are for a period not to exceed 30 days from date of proposal. Warranty: A written supplier s warranty will be provided for the equipment specified in this section. The warranty will be for a minimum period of (1) year from start-up or 18 months from time of equipment shipment, whichever comes first. Such warranty will cover all defects or failures of materials or workmanship which occurs as the result of normal operation and service except for normal wear parts (i.e. squeegees, skimmer wipers, etc.). Terms: Terms are net 30 days from shipment with no retentions allowed. Sales Tax: No sales taxes, use taxes, or duties have been included in our pricing. Freight: Prices quoted are F.O.B. shipping point with freight allowed to a readily accessible location nearest to jobsite. All claims for damage or loss in shipment shall be initiated by purchaser. Submittals: Submittals will be made approximately 6 to 8 weeks after purchase order is received in our office. Shipment: Estimated shipment time is 18 to 20 weeks after approved submittal drawings are received in our office. Field Service: Prices do not include field service unless noted in equipment description. Additional field service is available at $ per day plus expenses. Paint: If your equipment has paint included in the price, please take note of the following. Primer paints are designed to provide only a minimal protection from the time of application (usually for a period not to exceed 30 days). Therefore, it is imperative that the finish coat be applied within 30 days of shipment on all shop primed surfaces. Without the protection of the final coatings, primer degradation may occur after this period, which in turn may require renewed surface preparation and coating. If it is impractical or impossible to coat primed surfaces within the suggested time frame, WesTech strongly recommends the supply of bare metal, with surface preparation and coating performed in the field. All field surface preparation, field paint, touchup and repair to shop painted surfaces are not by WesTech. Project: Cotton Bayou WWTP Mont Belvieu, Texas Date: Wednesday, March 27, 2013 Proposal Number: _Bx1 CY 5

148 Launder cover systems Launder cover systems Benefits Inhibits algae growth Contains odors Operates 24/7 Reduces manpower Maintenance free Features Hinged cover panels open to tank center Stainless steel latch/handle for safety and security Attractive arched design Restraint cable The Clear Difference.

149 revolutionizing the way treatment plants deal with algae Latch / Handle Tank Wall Launder Cover Section Overlapping Tab Continuous Hinge Mounting Section Support Flange Weir & Scum Baffle Launder Cover Section Mounting Options Mounting Section Support Bracket Weir & Scum Baffle Other Cover Products Tank-wall mounted Weir-wall mounted Walk-on Inboard launder Dual inboard launder Channel Covers For more information visit our web site NEFCO NEFCO 4362 Northlake 4362 Northlake Blvd, Ste Blvd, 213 Ste 213 Palm Beach Palm Beach Gardens, Gardens, FL FL (561) (561) Patent No. 5,670,045 Patent No. 5,965,023 Patent No. 6,216,881 Patent No. 6,712,222 Patent No. 7,473,358 Patent No. 7,591,381

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151 04/18/13 WWR Presents to Mont Belvieu Wastewaster Treatment Plant A Quote for Model WWR-FSE-5524*(2) Secondary Clarifiers Model WWR-ASE-6024*(1) Secondary Clarifiers Local Representative: Hartwell *Field verify dimensions Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

152 04/18/13 WWR Features for all WeirWasher, ACS remove the algae, scum and other material that accumulates and grows in areas of a clarifier or thickener trough including effluent launder walls and floor, scum baffle, weirs, scum beach, influent launder, on brackets and other tank components. The use of pressurized water will clean irregular and porous surfaces, bolts and any other irregularities. Designed for square and irregular applications as well. The Model WWR WeirWasher, ACS has been in service for over 10 years and was designed by operators for operators. WeirWasher, ACS is both a patented and proprietary system that uses water pressure and accommodates virtually all tank configurations. Benefits of our Model WWR WeirWasher, ACS design include: Light Weight Design Does not require counterweights or structural reinforcement to the scum arm. Non-contact cleaning method does not impart additional dragging forces on the clarifier mechanism System drains when off, is insulated and heat traced to prevent freezing. Clarifier drive motor moves the system. Uses Class II or Class III plant water. Ecologically Responsible Activated by remote valve, timer, PLC or SCADA. Operational time requirements are typically 3-5 hours per day. Daily Maintenance/Adjustments not required. Custom Engineering and design services for each unique applications. Technical assistance 24 hours a day/7 days a week. Reduce or eliminate regular cleaning operations. Minimize Accident Risks and Injuries associated with clarifier cleaning. Eliminate effluent TSS surges caused by uncontrolled algae growth. Prevent algae fouling and associated cleaning costs in UV systems, Filter Beds, on system/valves and probes ADDITIONAL WeirWasher, ACS OPTIONS:-available on most models for an additional cost Clarifier Bottom Cleaning Attachment pre-cleans the bottom of the tank after draining Center Feed Well Sprayer reduces debris build up in the center feed well with minimal water and pressure requirements Deligt Scum Spray System spray directs scum and foam to the beach Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

153 04/18/13 WWR GTC proposes the following with each clarifier: 1. WeirWasher, ACS center assembly 2. WeirWasher, ACS Fixed Spray Apparatus that removes the algae, scum and other debris from underwater including scum ring mounts and the trough area. The Fixed Spray Apparatus is designed to clean the following areas: scum baffle (both sides, brackets) weirs (both sides) channel (inside and outer walls, floor) spillway 3. Custom Engineering and design services for the unique configurations Brass ball valve 1.5 fiberglass reinforced polypropylene strainer, auto drain valves and piping necessary to supply water to the center WeirWasher, ACS unit mounted on the center column and from the center unit to the outer fixed spray apparatus 5. Patented Rotating spray heads are used to optimize impingement force and cleaning power. Patented Rotating spray heads can clean any surface irregularities due to the overlapping circular rotation and nozzles spray angles. 6. Scope of Supply Description Spray Apparatus Piping along bridge Piping (below water) Center Unit (inner & outer) Center unit structural components Driving chain Pipe unions Spray Nozzles Fasteners (under water) Fasteners (above water) Rotating bearings Strainer Material Stainless steel, carbon fiber, composite materials, brass HDPE pipe-sidr 9 rated at 160 psi,, 3/8 Frost King Closed Cell Foam Insulation, Frost King self regulated heat sensing cables, ¼ vinyl foam aluminum backed wrap, pvc auto drain valves HDPE -SIDR 9 rated at 160 psi-flexible piping UHMW & Stainless Steel Stainless Steel Stainless Steel Stainless Steel, CPVC, or brass Bronze Pipe Barb Stainless Steel Stainless Steel, Galvanized RainBird Bronze High-Capacity Black Glass Reinforced Polypropylene or Bronze 9. One year* warranty from start-up.(* annual service and maintenance plan available ) 10. Spare parts for each unit 11. Submittal and Operations and Maintenance manual. Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

154 04/18/13 WWR The customer at a minimum will need to supply the following to each unit: 1. Clarifier partially drained for installation 2. Pressurized strained water to the foot of each clarifier bridge of each unit of at least 75 psi at 30 gpm with an isolation gate valve of 1 ¼ minimum 3. 2 personnel to install the WeirWasher, ACS for up to 3 days per clarifier installation video and manual provided with factory phone support volt connection for controller and heat tracing The price for the Model WWR-FSE WeirWasher system with the above-mentioned items is as follows: Item No. Description Unit Cost Qty. Total Cost 1 WWR-FSE-5524 unit with a 55 diameter clarifier and an approximate 24 center column diameter $23, $46, WWR-FSE-5024 unit with a 50 diameter clarifier and an approximate 24 center column diameter $22, $22, Shipping to Mont Belvieu, TX Cotton Bayou WWTP $ $2, Total (3) WeirWasher, ACS $71, taxes not included TOTAL (3) WeirWasher, ACS *Tax not included $73, Delivery Payment terms: 6-8 weeks standard delivery 100% Balance Due Net 30 on Delivery Validity: quotation is valid for 6 months from issue date taxes not included Thank you for your interest and if you have any questions please call us at Sincerely, Brent R. Gill Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

155 GillTrading.com, Inc. Makers of WeirWasher, ACS 04/18/13 WWR * Verify all dimensions before manufacturing Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

156 04/18/13 WWR Reference drawing Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

157 04/18/13 WWR Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

158 04/18/13 WWR Proprietary Information The design, application and use of the various items necessary to achieve the above said claims is a Tradesecret and are protected under Uniform Trade Secrets Act, California Civil Code 3246 et seq. & Economic Espionage Act, 18 USC 1831 et seq. The discussion, dissemination and/or use of the above philosophy s, designs, or equipment can not be used without formal written approval and authorization from GillTrading.com, Inc. This information is the intellectual property of GillTrading.com, Inc. GTC08/ SW Murray Blvd., #321, Beaverton, OR

159 Ford Hall Company - The Weir Wolf Automation is a unique system of spring-loaded bru... Page 1 of 1 4/29/2013 Home Features Benefits Applications Other Products Service/Brush Orders Testimonials FAQ Weir-Wolf Wear and Wares Contact Us P F FEATURES of the Weir-Wolf automated weir cleaning system: The Weir-Wolf features 316 Stainless Steel componentsfor all applications regardless of corrosion issues, temperatures or environments. The very sturdy and corrosion resistant automated weir cleaner has been installed under domes and oceanfront plants with highly corrosive applications, in extremely high temperature industrial clarifiers, at sites with heavy snowfalls on open clarifiers or in heavy solids thickeners. With the Weir-Wolf system, all brush arms are Spring Loaded to ensure a thorough cleaning of all effluent surfaces; no matter how irregular or "out of round" those surfaces may be. The Weir-Wolf Individual Brushes are designed to make physical contact with all surfaces to be cleaned, even those surfaces under water. By the brushes making physical contact with the surface, the cleaning capability is better than with a hose or sprays. The Weir-Wolf features a 5 year Warranty on parts and 1 year Warranty on laborwith the exception of the brushes. The Weir-Wolf Brush life designed to average 1 year with 24 hour / 7 day a week use. Brushes are specifically designed for Wastewater applications and UV resistance. Ford Hall Company has 5 different types of brushes of different materials and used to accommodate the individual clarifier/ thickener materials and to accommodate the different applications whether they be industrial or municipal; water or wastewater. Replacement brushes are recommended to be purchased from the Ford Hall Company for these reasons. The Weir-Wolf features enhanced Lock in/ Lock out designfor customized cleanings; allowing for 24 hours per day -7 days a week cleanings or intermittent cleanings based on customer need or application. Intermittent cleanings will extend the life of the brushes beyond the 1 year mark, and in some instances, 2 to 3 years for one set of brushes has been observed. The Weir-Wolf uses existing clarifier/ thickener drives; requires no additional power source or electricity. The Weir-Wolf system attaches directly to the skimmer. The Weir-Wolf automated weir cleaning system does not adversely affect the drive of the clarifiers and thickeners and has a negligible increase in energy consumption but provides the added benefit of weir cleaning. For this reason, some have even categorized the Weir-Wolf system as a "green technology". (Unfortunately, spray weir cleaning systems often require a booster pump to supply enough water pressure to all the nozzles to complete the weir cleaning task. Unfortunately, this information is not always known at the time of the sale and is not realized until after the system is installed.) The Weir-Wolf automated weir cleaning system works in ALL climates. The Ford Hall Company has been installed on open clarifiers in hot applications such as Phoenix, AZ; Tucson, AZ, Las Vegas, NV; Mojave, CA; in cold applications like Detroit, MI; Eagle, NB; Amherst, NY and Pickering, ONT Canada. The Weir-Wolf system has been installed in highly corrosive environments under domes and industrial applications. Home Features Benefits Applications Other Products Service/Brush Orders Testimonials FAQ Contact Us Watch the Weir-Wolf Video 2010 Ford Hall Company, Inc.

160 Budgetary Proposal DATE: 15 March 2013 TO: Monica Stiggins, P.E. Project Engineer COMPANY: Klotz Associates 1160 Dairy Ashford, Suite 500 Houston, TX Tel: (281) Process Systems Group East Hardy Houston, Texas Phone: (281) Fax: (281) CC: FROM: SUBJECT: Mike Kowalick Fred Pethick Jaime Bengoechea, Regional Manager Mon Belvieu WWTP, TX Concrete Ashbrook Iso-Disc TM Cloth Disk Filters QUOTE NUMBER: In response to your inquiry to filter an average flow of 1.5 MGD and a peak flow of 4.5 MGD from the Mon Belvieu WWTP, Ashbrook Simon-Hartley is pleased to offer Iso-Disc TM cloth filters in concrete basins. Description of Operation The Ashbrook Iso-Disc TM Cloth Filter utilizes an outside-in flow pattern (disks are fully submerged during operation) and stationary disks to minimize mechanical requirements of the system. All components of the system are constructed from corrosion resistant materials that have been designed for continuous operation. The flow enters the filter tank through the influent flange. As the water passes through the cloth material, it enters into the core of each disk. The water exits each disk through one filtrate line located on the top of the disk. This line passes the filtrate to the filtrate collection trough. During the filtration process, the entire filter operates in static mode. As the filter cloth collects solids on the outer surface, headloss across the media gradually increases to a set point elevation in the tank. At this point, the backwash cleaning system energizes in a set sequence of cleaning operations. Influent continues to be processed during the backwash cleaning cycle, allowing for continuous filtration, 24 hours per day. The backwash cleaning system is controlled by a PLC-based operating system furnished with the filter equipment. Page 1 of 4

161 Budgetary Proposal Basis of Design Average design flow (ADF): 1,042 gpm (1.5 MGD) Peak 2-hr design flow (P2HDF): 3,125 gpm (4.5 MGD) Influent temperature ( o C): 10 to 30 Maximum filter headloss: 12 inches of water column Filter model selected: IDDF-5D7296R-304SS Effective filtration area available per disc: 96 ft 2 Number of discs per filter: 5 Effective filtration area available per filter: 480 ft 2 Number of disk filters required: 2 (includes 1 redundant filter) Total effective filtration area available (6 filters): 960 ft 2 Filtration rate per filter (ADF): 1.09 gpm/ft 2 (2 units running) Filtration rate per filter (P2HDF): 3.25 gpm/ft 2 (2 units running) Filtration rate per filter (ADF): 2.17 gpm/ft 2 (1 unit running) Filtration rate per filter (P2HDF): 6.51 gpm/ft 2 (1 unit running) Backwash requirement (as % of the influent flow): 1-3% Maximum influent chlorides concentration to filter: Maximum influent TSS concentration to filters: Average influent TSS concentration to filters: Projected filter effluent TSS concentration: 200 mg/l 30 mg/l mg/l 5 mg/l Items Furnished by Ashbrook Simon-Hartley Each of the two (2) proposed Iso-Disc disk filters will be complete and will include the following: (5) filter disks (304 stainless steel) with filter grid and cloth media (1) backwash vacuum cleaning assembly complete with vacuum shoes and valves (1) 5 HP vacuum pump for the backwash system consisting of externally mounted centrifugal pump, 480 volt, 60 Hz., 3 phase motor, electrically actuated valves for backwash & settled solids removal and underdrain piping. (1) 2 HP drive unit with 480 volt, 60 Hz, 3 phase motor (1) level pressure transducer with support bracket (1) lot of high and low level alarm floats Common to Both Filters (1) PLC-based control panel with NEMA 4X 304SS enclosure and color HMI touchscreen, to include but not limited to, main disconnect circuit breaker, GFI receptacle, terminal blocks, motor starters for pumps and drives, pilot lights. Page 2 of 4

162 Budgetary Proposal Estimated Filter Dimensions The estimated footprint required for each 5-disk filter cassette (excluding backwash pump, backwash valves, piping and control panel) is: 14-6 long x 8-6 wide x 10-6 tall (top of the concrete tank). The maximum water level in the filter would be approximately 9-4 (see attached layout drawings at the end of this proposal for reference showing filters with (7) discs; the filters proposed for the Mon Belvieu WWTP only require (5) discs). Field Service Three (3) trips to the jobsite Six (6) eight hour days total Items Furnished by Others Civil works [common influent trough(s), influent sluice gates, wall sleeves and common effluent trough(s)] Equipment unloading and installation, including plumbing and electrical from components to control panel enclosure. Influent, final filtrate, backwash piping to and from the filters to the discharge point. Access stairways and platforms around the filters Sale Price Sale price, F.O.B. factory, with freight and insurance allowed to the Mon Belvieu WWTP, TX, off-loading by others......$465, Submittal Drawings Submittal drawings on the preceding equipment will be submitted within four (4) to six (6) weeks after a purchase order and/or agreement has been executed by the Buyer and Seller. Note: A purchase order or agreement signed by both Ashbrook and the purchase order originator must be executed prior to any submittal being forwarded. Shipment Shipment on the preceding equipment can be made within fourteen (14) to sixteen (16) weeks from receipt of approved submittals, and may increase or decrease with volume production at the time of receipt of this required information. Page 3 of 4

163 Budgetary Proposal If you have any questions, please contact your local representative Mike Kowalick at (281) or Jaime Bengoechea at (713) Sincerely, Ashbrook Simon-Hartley Attachment: Layout drawings of similar filters in concrete basins for reference Page 4 of 4

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166 PROPOSAL FOR THE CITY OF MONT BELVIEU - REPLACEMENT, TX QUOTE: LBGR1152 The TrojanUV3000Plus is operating in over 1300 municipal wastewater plants around the world. Disinfecting over 17 billion gallons a day, the TrojanUV3000Plus has become the reference standard in the industry.

167 April 29, 2013 In response to your request, we are pleased to provide the following TrojanUV3000Plus proposal for the Mont Belvieu WWTP, TX UV Replacement project. The TrojanUV3000Plus TM has been shown in over 1300 installations to provide dependable performance, simplified maintenance, and superior electrical efficiency. As explained in this proposal, the system incorporates innovative features to reduce O&M costs, including variable output electronic ballasts to provide dimming capability and Trojan s revolutionary ActiClean-WW TM system the industry s only online chemical and mechanical quartz sleeve cleaning system. All Trojan installations are supported by a global network of certified Service Representatives providing local service and support. Please do not hesitate to call us if you have any questions regarding this proposal. Thank you for the opportunity to quote the TrojanUV3000Plus and we look forward to working with you on this project. With best regards, Bill Gordon, PMP 3020 Gore Road London, Ontario N5V 4T7 Canada (519) ext bgordon@trojanuv.com Local Representative: Mike Kowalick Newman Regency Group S Kirkwood Rd. Suite 306, Stafford, TX USA DESIGN CRITERIA MONT BELVIEU - REPLACEMENT Peak Design Flow: UV Transmittance: Total Suspended Solids: Disinfection Limit: Recommended Design Dose: Validation Factors: 4.5 US_MGD 65% (minimum) 30 mg/l (30 Day Average, grab sample) 126 e-coli per 100 ml, based on a 30 day GM and 394 e-coli per 100 ml Maximum grab sample. 35,000 µws/cm 2, bioassay validated 0.98 end of lamp life factor (Low-Pressure Amalgam Lamps) 0.95 fouling factor (ActiClean-WW Chemical / Mechanical Cleaning System) Mont Belvieu - Replacement 3/11/ LBGR1152

168 DESIGN SUMMARY QUOTE: LBGR1152 Based on the above design criteria, the TrojanUV3000Plus proposed consists of: CHANNEL (Please reference Trojan layout drawings for details.) Number of Channels: 1 Approximate Channel Length Required: Channel Width Based on Number of UV Modules: 30 ft 12 in Channel Depth Recommended for UV Module Access: 62 in UV MODULES Total Number of Banks: 2 Number of Modules per Bank: 3 Number of Lamps per Module: 8 Total Number of UV Lamps: 48 Maximum Power Draw: 12 kw UV PANELS Power Distribution Center Quantity: 2 System Control Center Quantity: 1 MISCELLANEOUS EQUIPMENT Level Controller Quantity: 1 Type of Level Controller: Automatic Chemical / Mechanical Cleaning: UV Module Lifting Device: On-line UVT Monitor: Fixed Serpentine Weir Trojan ActiClean-WW Davit Crane Optional Adder Standard Spare Parts / Safety Equipment: Included per TCEQ 217 Other Equipment: ELECTRICAL REQUIREMENTS 1. Each Power Distribution Center requires an electrical supply of one (1) 480 Volts, 3 phase, 4 wire (plus ground), 8.7 kva. 2. The Hydraulic System Center requires an electrical power supply that is powered from the Power Distribution Center. 3. The System Control Center requires an electrical power supply that is powered from the Power Distribution Center. 4. The OPTIONAL online UVT Monitor will require an electrical supply of one (1) 120 Volts, 1 phase, 2 wire (plus ground), 1 Amp. 5. Electrical disconnects required per local code are not included in this proposal. Mont Belvieu - Replacement 3/11/ LBGR1152

169 COMMERCIAL INFORMATION Total Capital Cost: $172,900 (US$) This price excludes any taxes that may be applicable and is valid for 90 days from the date of this letter. OPERATING COST ESTIMATE Operating Conditions Average Flow: 1.5 US_MGD Yearly Usage: 8760 hours UV Transmittance: 65% Power Requirements Lamp Replacement Average Power Draw: 5.28 kw Number lamps per year: 18 Cost per kw hour: $0.07 Price per lamp: $314 Annual Power Cost: $3,238 Total Annual O&M Cost: $8,890 Annual Lamp Replacement Cost: $5,653 This cost estimate is based on the average flow and UV transmittance listed above. Actual operating costs may be lower due to the TrojanUV3000Plus automatic dose pacing control system. As UV demand decreases, by a change in operating conditions, the power level of the lamps decreases accordingly. The dose pacing system minimizes equipment power levels while the target UV dose is maintained to ensure disinfection at all times. EQUIPMENT WARRANTEES 1. Trojan Technologies warrants all components of the system (excluding UV lamps) against faulty workmanship and materials for a period of 12 months from date of start-up or 18 months after shipment, which ever comes first. 2. UV lamps purchased are warranted for 12,000 hours of operation or 3 years from shipment, whichever comes first. The warranty is pro-rated after 9,000 hours of operation. This means that if a lamp fails prior to 9,000 hours of use, a new lamp is provided at no charge. 3. Electronic ballasts are warranted for 5 years, pro-rated after 1 year. Mont Belvieu - Replacement 3/11/ LBGR1152

170 Manufacturers Representatives since 1965 MACAULAY IS A CERTIFIED WBE COMPANY QUOTE Houston: P.O. Box , Houston, TX / / Fax: 281/282/0077 Austin: P.O , Austin, TX / Fax: 512/ Dallas: P.O. Box , Plano, TX / Fax: 972/ QUOTE NO CD TO: KLOTZ ASSOCIATES DATE: 04/05/13 QUOTED BY: CHERYL DIEGELMAN ATTN: MONICA STIGGINS VALIDITY: 60 DAYS FOB POINT: FACTORY DELIVERY: 3-4 WEEKS ARO FREIGHT: PREPAID/ALLOWED PHONE: TERMS: NET 30 DAYS ITEM QTY DESCRIPTION PRICE 1) 1 SEVERN TRENT/CAPITAL CONTROLS, GAS CHLORINATION SYSTEM, 100 PPD MAXIMUM CAPACITY. SYSTEM TO INCLUDE: (2) NXT-3000 VACUUM REGULATORS WITH BUILT-IN AUTOMATIC SWITCHOVER UNIT (1) REMOTE METER PANEL, 0-75 PPD, MODEL MA30 (1) EJECTOR, NOZZLE SIZE TO BE DETERMINED, MODEL EJ100C1 (1) 1" NPT CORP STOP DIFFUSER, MODEL BM (50) FEET OF TUBING, MODEL R-447 (1) CHLORINE SINGLE SENSOR GAS DETECTOR MODEL 1610B1 (1) SCALETRON DUAL DIGITAL 150# CYLINDER SCALE, MODEL 2350 SYSTEM PRICE: $8, ) 1 SEVERN TRENT/CAPITAL CONTROLS, GAS SULFUR DIOXIDE SYSTEM, 100 PPD MAXIMUM CAPACITY. SYSTEM TO INCLUDE: (2) NXT-3000 VACUUM REGULATORS WITH BUILT-IN AUTOMATIC SWITCHOVER UNIT (1) REMOTE METER PANEL, 0-75 PPD, MODEL MA30 (1) EJECTOR, NOZZLE SIZE TO BE DETERMINED, MODEL EJ100C1 (1) 1" NPT CORP STOP DIFFUSER, MODEL BM (50) FEET OF TUBING, MODEL R-447 (1) SULFUR DIOXIDE SINGLE SENSOR GAS DETECTOR MODEL 1610B1 (1) SCALETRON DUAL DIGITAL 150# CYLINDER SCALE, MODEL 2350 SYSTEM PRICE: $8, OPTIONS: ONE (1) DAY OF START-UP ASSISTANCE AND TRAINING, IF REQUIRED, ADD: $ PER DAY (CONTINUED)