EFTA00807650.pdf

PROPOSAL TO Mr. Brice Gordon For 25,000 GPD CONTAINERIZED SEAWATER REVERSE OSMOSIS SYSTEM Great St. James Island UNITED STATES VIRGIN ISLANDS 30 JUNE 2018 PROPOSAL NUMBER 043-06302018 EFTA00807650 Table of Contents OVERVIEW 3 PERFORMANCE PARAMETERS 5 PROPOSED PROCESS DESCRIPTION 7 COMMERCIAL TERMS 23 ACCEPTANCE OF PROPOSAL 25 TERMS AND CONDITIONS 26 Retention of Intellectual Property Rights Unless otherwise expressly agreed in writing, Gemini Seawater Systems LLC (GEMINI) and its affiliates retain all right, title, and interest to any intellectual property contained in this Proposal, including but not limited to: any plans, drawings, schematics, renderings, models, specifications, parts lists, bills of materials, data sheets, or other materials which may be subject to copyright: trade secrets; patented subject matter; and confidential business information (collectively, -Gemini Intellectual Property). The Saint James Group hereby acknowledges that any Gemini Intellectual Property contained in this Proposal or disclosed in connection with this Proposal is presented by GEMINI solely and exclusively for the purpose of this Proposal. The Saint James Group agrees that The Saint James Group shall not use, copy, reproduce, transmit, or disclose Gemini Intellectual Property to any of its officers, employees, agents, consultants, or any other person or entity acting on Saint James Group' behalf for any purpose other than to evaluate and consider the merits of this Proposal. The Saint James Group further agrees that The Saint James Group shall not (i) make, sell, offer for sale, or import any Gemini Intellectual Property or any products or systems described or depicted in this Proposal without the express written consent of GEMINI or (ii) copy, reproduce, transmit, transfer, or disclose Gemini Intellectual Property or any products or systems described or depicted in this Proposal to any third party for any reason whatsoever without the express written consent of GEMINI. 2018-0321 Copyright 2018©GSS GEMINI SEAWATER SYSTEM ISO PACE I? OF SS EFTA00807651 OVERVIEW Gemini Seawater Systems LLC (GSS) is pleased to present this proposal for the design, fabrication, installation and commissioning of a 25,000 gallon per day (GPD) seawater reverse osmosis desalination plant for The Saint James Group to supply water for Great St. James, USVI. This system will be supplied in a modified 20-foot-long shipping container. It is our understanding that this plant will provide water for the island until a subsurface pipeline is installed from Little St. James Island at which time the system could be decommissioned and sold or could remain on the island to serve as a standby water supply. The overall treatment process will consist of seawater pumping from the existing intake, media filtration, cartridge filtration, the addition of a trace quantity of a scale inhibitor, membrane separation, and post treatment consisting of upflow calcium carbonate for the addition of an alkalinity and hardness followed by chlorination. Disposal of the membrane concentrate and media filter backwash, will be via the existing outfall. The desalination system will consist of a single skid mounted unit rated to produce 25,000 US GPD within a 24-hour day. It will consist of two pressure vessels, each designed to hold up to three Toray TM820M- 400 spiral wound elements. The system will be designed to incorporate an automatic flushing feature that reduces the chance of scale formation or equipment corrosion during periods of shutdown. The proposed membrane feed pump is a Danfoss APP8.2 positive displacement axial piston pump constructed from 2205/2507 duplex stainless steel. Operating in parallel with the membrane feed pump will be a single ERI energy recovery device. This design provides the lowest possible energy usage and the greatest degree of flexibility, while maintaining a residual pressure on the membrane concentrate to eliminate the need for re-pumping for disposal. All low-pressure piping systems will be constructed using schedule 80 PVC, while all high-pressure piping is made from Zeron 100, a high quality super duplex stainless steel developed specifically for seawater. The plant controls are identical to those being installed on the Little St. James unit, designed to allow monitoring and control of each individual unit process from the control panel or remotely via a broadband Internet connection. The control system will be PLC based with a touch screen interface. The overall plant includes all the necessary instrumentation, motor starters, and controls for a complete, integrated system. The membrane post treatment process included in this proposal consists of one calcite bed and one liquid chemical feed system for disinfection of the finished water. OEM7J17. SEAWATER SYSTEM I-I-C PACE S OF MI EFTA00807652 Based on the stated assumptions for feedwater quality, this plant will produce finished water with total dissolved solids (TDS) in the range of 350 to 500 parts per million (ppm), well within US Safe Drinking Water Act. The system would be furnished in a new 20 foot-long shipping container modified to include 2-inches of insulated refrigeration panels, lighting, man door, and split air conditioning unit. The exterior of the container will be painted white to reduce heat loading, but the color could be changed to blend the container into the nature colors of the island. The price for the entire system is US$213,810, FOB Gainesville, Florida. This price includes a new seawater intake pumping system, pretreatment, 25,000 GPD SWRO unit, post treatment, installation tools and labor, commission labor and consumables and operation and maintenance manual. This price does not include the seawater intake, outfall, storage tanks or field piping and conduits, trenching and restoration cost. CEM7J47. SEAWATER SYSTEM I-I-C PACE LI OF MI EFTA00807653 PERFORMANCE PARAMETERS In the proposed plant design, seawater will be obtained from an open seawater intake located on the south side of the island and treated to US SDWA Standards. The proposed desalination process was developed based on a membrane flux rate' of 10.4 GFD. All hydraulic loading rates and pipe sizing have been done assuming a maximum recovery rate2 of 40 percent. Table 1 summarizes the design criteria used to size the proposed equipment. Table 1 Proposed System Design Criteria Parameter Design Value Plant Daily Output, US GPD 25,000 Feedwater Stream Quantity, normal operating, GPM 43.4 Maximum Total Dissolved Solids, mg/L 36,000 Design Feedwater Temperature 24° - 33° C Permeate Stream Design Flowrate, GPM 17.4 Design Recovery, % 40 Total Dissolved Solids, mg/L Less than 500 Concentrate Stream Quantity, normal operating, GPM 26.0 Backwash Flowrate, GPM 74 - 100 Power Requirements3 Three-phase voltage 208 Estimated unit power consumption, KWH/KGal 17.8 1 Defined as the membrane production rate per square foot of active membrane area and expressed in terms of gallons per square foot of active membrane per day or GFD. 2 The recovery rate is the volumetric efficiency of the system as defined as the volume of water produced as a percentage of the feedwater. A 40 percent recovery system produces 40 gallons of permeate for every 100 gallons of seawater pumped into the membrane array. 3 Detailed breakdown for the estimated power consumption is presented on the next page. CEMINS SEAWATER SYSTEM I-I-C RACE S OF SE-I EFTA00807654  Exhibit 1 Plant Power Summary 25,000 GM' Great St. James Desalination System Plant Capacity: 25,000 GPD Electrical Power: 208 VAC 60 Hz Operating Total Operating Loads Motor Actual Load Actual Load Line Load Hours Source Rating, KW Quantity KW each KW total eff. % KW per Day PF Amps KVA KWH/D KWH/KG Feedwater Supply Pump 3.7 1 2.7 2.7 89.0% 3.0 24 80.0% 10.5 3.8 73 291 Membrane Feed Pump 14.9 1 7.6 7.6 91.0% 8.3 24 99.0% 23.3 8.4 200 7.99 ER Boost Pump 3.7 1 1.0 1.0 88.0% 1.1 24 99.0% 3.2 1.1 27 1.08 Subtotal 208 VAC 3 Phase 11.3 12.5 37.0 13.3 299.5 12.0 Single Phase Power: 110 VAC 60 Hz Control Power 99.0% 1.0 24 100% 9.1 1.0 24 0.96 Container Power 99.0% 5.0 24 100% 45.5 5.0 120 4.80 Subtotal 110 VAC Single Phase 6.0 KW 54.9 6.0 145.0 Equivalent 208 VAC 3 Phase Amps 16.8 Single and 3 Phase Total 18.5 KW 53.8 6.0 444 Estimated Power Consumption, KWH/KG 17.8 Based on published information for the various components used in the system. Actual performance may vary depending on equipment age and membrane operating pressure. Energy is based on membrane operating pressure of 760 psi, energy recovery boost pump operating pressure of 35 psi, includes intake pump and assumes container power transformer operating at full capacity. In reality, the container power will be substantially lower. GEMINI- SEAWATER SYSTEM ISO RACE C-7 OF PS EFTA00807655 PROPOSED PROCESS DESCRIPTION The overall treatment process will consist of seawater pumping, media filtration, cartridge filtration, the addition of a trace quantity of a scale inhibitor, membrane separation, and post treatment consisting of an upflow calcite bed followed by a chemical feed system chlorination. Disposal of the membrane concentrate and media filter backwash will be via an outfall. The system will be designed to allow monitoring and control from a main control panel or remotely via a broadband Internet connection. The control system will be PLC based with a touch screen interface. The overall system includes all the necessary instrumentation, motor starters, and controls for a complete, integrated system. The system will be supplied in a 20-foot shipping container equipped with air conditioning and lighting. The system will be furnished to operate on a 208-volt three phase power supply. RAW WATER SUPPLY Table 2 presents the seawater composition used for the system design along with the projected finished water compositions. In general, actual permeate quality will vary, depending on feed water salinity and temperature and the degree of membrane fouling. Table 2 Water Quality Profile Membrane Membrane Finished Constituent Feedwater Concentrate Permeate Water Calcium, mg/I as ion 400 689 0.7 12.8 Magnesium, mg/I as ion 1,300 2,240 2.2 2.2 Sodium, mg/I as ion 10,800 18,573 67 77 Potassium, mg/I as ion 390 670 2.7 2.7 Bicarbonate, mg/I as ion 140 237 1.2 33 Sulfate, mg/I as ion 2,700 4,651 6.1 6.1 Chloride, mg/I as ion 19,400 33,423 107 110 Carbon Dioxide, mg/I as CO2 2.4 2.4 2.4 0.1 Silica, mg/I as Si02 15 25.8 0.1 10 TDS, mg/I 35,106 60,517 187 254 pH, unit 7.8 8.0 5.9 8.2 To meet the flow and pressure requirements of the system pretreatment, an intake pump, intake priming system and related piping will be provided and installed in a shelter (provided by The Saint James Group). The scope of supply includes the following: Intake Pump Number provided 1 CEMT.N.T. SEAWATER SYSTEM ISO PACE 7 OF RS EFTA00807656 Manufacturer Ampco Model ZC2 2" x 1.5" Pump Fluid End 2205 Duplex Stainless Steel Motor Rating, HP 5 Intake Pump Suction Isolation Butterfly Manufacturer Asahi Size Material of Construction PVC Number provided 1 Intake Pump Discharge Isolation Ball Manufacturer Asahi Size Material of Construction PVC Number provided 1 Intake Pump Discharge Check Vertical Positioned Swing Manufacturer Asahi Size 2" Material of Construction PVC Number provided 1 Intake Pump VFD Number Provided 1 Manufacturer Danfoss Model VLT6 Aqua Drive NEMA Rating 4X Motor Rating, HP 5 Voltage 208 VAC Phases Three Electrical Disconnect Location Intake Pump Manufacturer Bryant or equal Rating 30 amp Enclosure non-metallic NEMA 4 Number provided 1 Pressure Indicator Location Intake Pump Suction Manufacturer WIKA or equal Range -30" Hg - 0 - 30 psig Material of Construction 316 SSTL Wetted MEM=Isl= SEAMIATER SYSTEM I -1—C PACE El CF PEI EFTA00807657 Seawater Intake Priming Pump Number Provided 1 Manufacturer Tsurumi Model 50TM2.4S Pump Fluid End Titanium Motor Rating, HP 0.5 Priming Solution Isolation Type Ball Manufacturer Asahi Size 1.5' Material of Construction PVC Number Provided 1 Priming Vacuum Line Isolation Type Y-Check Manufacturer GF Size 1/2" Material of Construction PVC Number Provided 1 Priming Vacuum Line Isolation Type Ball Manufacturer Asahi Size 1/2" Material of Construction PVC Number Provided 2 Priming Eductor Manufacturer Pardee Size 1.5' Material of Construction Glass reinforced polyethylene Number Provided 1 Priming Tank Manufacturer Chem-Tainer Capacity 67 gallons Size 24"(L) x 18"(W) x 36"(H), 3/16" wall thickness Material of Construction high density polyethylene Number Provided 1 INTERCONNECTING PIPING & CONDUITS The following information is provided to assist with planning and facility layout. The following sizes and CEACIsl= SEAIAIATER SYSTEM I—I—C PACE EFTA00807658 materials are recommended for this project based on the buildout requirements. Seawater Supply — Intake Pump Station to Plant Material HDPE Outside Diameter 3- Pipe Rating DR17 Connections Fused or compression coupling Membrane Concentrate — Plant to Outfall Material HDPE Outside Diameter 3- Pipe Rating DR17 Connections Fused or compression coupling Finished Water— Plant to Storage Material PVC Outside Diameter 1.5' Pipe Rating Schedule 80 Connections Glued and 150 lbs flanged MEDIA FILTRATION Media filtration is used to protect the membrane system from suspended solids present in the seawater. The media filtration system would consist of the following: Media Filters Diameter, feet 2.5 Number required 2 Side Shell, feet 5 Material of Construction Glass reinforced plastic Maximum Design Pressure 100 psig Design ASME Code, but not code stamped Media Anthracite, garnet sand, and pea gravity Filter Loading Rate, GPM/ft2 4.4 Backwash Loading Rate, GPM/ft2 15-20 Backwash Flowrate, GPM 74 - 98 Backwash Source Seawater Intake Pump Media Filter Face Piping Valves Feed Isolation Valve Size 2-inch Type Ball Backwash Inlet Isolation Valve MEMatl= SEAIAIATER SYSTEM I-I-C PACE 1S CF E?B EFTA00807659  Size 2-inch Type Ball Filter Housing Vent Size Yrinch Type Ball Backwash to Drain Isolation Valve Size 2-inch Type Ball Filtered Outlet Isolation Inlet Size 2-inch Type Ball Forward Rinse Isolation Valve Size 2-inch Type Ball Manufacturer Asahi or equal Material of Construction PVC Pressure Transmitter Location Media Filter Influent Header Manufacturer WIKA or Equal Range 0 -100 psig Material of Construction 316 SSTL Wetted Number Provided 1 Pressure Transmitter Location Media Filter Effluent Pressure Manufacturer WIKA or Equal Range 0 -100 psig Material of Construction 316 SSTL Wetted Number Provided 1 Pressure Indicator Media Filter Inlet and Outlet Manufacturer WIKA Size 4-1/2' Range 0 to 100 psig Material of Construction 316 SSTL Wetted and Phenolic Case Liquid Fill Glycerin Number Provided 1 Switching Valve Swagelok SS-43XGS4 Number Provided 1 CEN4=Isl= SEAVIATER St.:STEN.; 1_1_0 PACE S -i CF EFTA00807660 SCALE CONTROL Most naturally occurring waters precipitate calcium carbonate when concentrated. During the RO process, the dissolved solids, including these sparingly soluble salts, are concentrated by the RO membranes. If any of these salts are allowed to precipitate, the resulting scale can foul the RO membranes. Through the use of scale inhibitors, the potential for the seawater to form a scale during the treatment process is minimized. The chemical injection pump fluid end will be supplied to permit the use of sulfuric acid instead of the scale inhibitor to enhance post treatment operation. The pretreatment system will include a chemical injection system that will consist of the following: Chemical Feed System Chemical Scale Inhibitor Number provided 1 Manufacturer Grundfos Head and Fittings PVDF Fluid End PVDF Check Valves Ceramic Day Tank Volume 100 liters Material of Construction Linear Polyethylene Manufacturer Grundfos Calibration Column Location Scale Inhibitor Feed System Manufacturer ProMinent Capacity 0 to 250 mL Number Provided 1 Isolation Valve Location Chemical Pump Suction Manufacturer Asahl Type Ball Size Number Provided 2 Chemical Makeup Water Supply Source RO Permeate Size Material Schedule 80 PVC Isolation Ball Valve CEN4=Isl= SEAIAIATER St.:STEN.; 1_1_0 PACE -±2? CF as EFTA00807661 CARTRIDGE FILTRATION Five-micron polypropylene cartridge filters are provided to protect the high-pressure pump, energy recovery unit and the RO membrane in the event of an upset in the seawater supply. The RO unit is equipped with a single housing mounted on the unit and equipped with inlet, outlet and drain valves to permit cleaning during element replacement to avoid the introduction of suspended material into the high-pressure pump and energy recovery unit. The RO unit will be equipped with the following: Cartridge Filter Housing Inlet Isolation Valve Size 2' Type Ball Manufacturer Asahi Material of Construction PVC Number Provided 1 Cartridge Filter Quantity on Line, each 1 Manufacturer Eden Excel Number of Elements per Housing 10 Cartridge Length, inches 40 Material of Construction FRP Trim 316 SSTL Cartridge Filter Housing Vent Size Type Ball Valve Manufacturer Asahi Material of Construction PVC Number Provided 1 Cartridge Filter Housing Drain and Flush Size 2' Type Ball Manufacturer Asahi Material of Construction PVC Number Provided 1 Cartridge Filter Housing Outlet Size 2' Type Ball Manufacturer Asahi Material of Construction PVC Pressure Transmitter Location Cartridge Filter Effluent Manufacturer WIKA Range 0 -100 psi CEMM= SE/WUXI- EP SYSTEM l_l_C PACE MO ClF EFTA00807662 Material of Construction 316 SSTL Wetted Number Provided 1 Pressure Indicator Cartridge Filter Inlet and Outlet Manufacturer WIKA Size 4-1/2" Range 0 to 100 psig Material of Construction 316 SSTL Wetted and Phenolic Case Liquid Fill Glycerin Number Provided 1 Switching Valve Swagelok SS-43XGS4 Number Provided 1 HIGH PRESSURE PUMP The reverse osmosis unit will use a high-pressure pump and energy recovery system to pressurize the pretreated feedwater to approximately 760 psi although the exact operating pressure of the membranes is dependent on feedwater temperature, salinity, and degree of membrane fouling. GSS proposes the following membrane feed pumping system for this project: Number Provided 1 Manufacturer Danfoss Model APP8.2 Pump Fluid End 2205/2507 Super Duplex Stainless Steel Estimated Operating Speed 1,000 rpms Driver Motor Rating, HP 20 Motor Enclosure TEFC Rating Severe DutyNFD Motor Starter/Controller Number Provided 1 Manufacturer Danfoss Model VLTe Aqua Drive NEMA Rating 4X Motor Rating, HP 20 Voltage 208 VAC Phases Three Number provided 1 CEM=Isl= SEAIAIATER SYSTEM I-1-C RACE 1 1-I CF EFTA00807663 ENERGY RECOVERY Operating in parallel with the high-pressure pump will be an energy recovery system consisting of a single ERI pressure exchanger unit and boost pump. This design results in the pressure exchanger operating at 58 percent of its rated capacity at 40 percent recovery. The energy recovery system will consist of the following: Number Provided 1 Manufacturer Energy Recovery Inc. Model PX-45S Materials of Construction Rotor Ceramic Shell FRP High-pressure connections AL6XN Low-pressure connections SCH 80 PVC Energy Recovery Boost Pump Number Provided 1 Manufacturer ERI or equal Model HP-8503 Pump Fluid End AL6XN Stainless Steel Motor Rating, HP 5 Enclosure TEFC Rating Inverter Duty ER Pump VFD Number Provided 1 Manufacturer Danfoss Model vur.Aqua Drive NEMA Rating 4X Motor Rating, HP 5 Voltage 480 VAC Phases Three ER Discharge Back Pressure Regulating Valve Manufacturer Asahi Size 1.5-inch Type Globe Valve Number Provided ER Discharge Check Valve Manufacturer Asahi CEO -Zrtl= SEAMIATER SYSTEM I-1-C PACE "SS :::F E?El EFTA00807664 Size 1.5-inch Type Swing Check Valve Number Provided 1 RO MEMBRANE ARRAY The RO membrane skid designed to produce 25,000 GPD will consist of the following: Pressure Vessel Manufacturer Progressive Composite Technologies or equal Model PRO-8-1000-SP-3 Total Number of Vessels provided: 2 Membrane Manufacturer Tway Membrane Model TM820M-400 or equal Membrane Type Cross Linked Fully Aromatic Polyamide Composite Seawater Number of Elements per Vessel, each 3 Total Number of Elements 6 Average Membrane flux, gfd 10.4 Estimated Membrane Life, years 4 Pressure Indicator Membrane Feed and Concentrate and ER Discharge Manufacturer WIKA Size 4-1/2" Range 0 to 1,500 psig Material of Construction 316 SSTL Wetted and Phenolic Case Liquid Fill Glycerin Number Provided 1 Switching Valve Swagelok SS-43ZF2 Number Provided 1 Sample Valves Manufacturer GF Size 1/4" Type Ball Labcock Valve Features Full ported to permit membrane probing Total Number Provided 5 Locations Individual Pressure Vessel, Incoming Feedwater, Overall Permeate and Concentrate MEM=Isl= SEAMIATER SVSTEM l_l_C PACE -±E• CF PEI EFTA00807665 Instrumentation Concentrate Low/Plant Discharge (TPDES Permit) Pressure Flow Manufacturer ABB or equal Type Magnetic Connections 1" 150-pound Flange Insert Range, GPM 0 to 50 Number Provided 1 Instrumentation Plant Discharge (TPDES Permit) pH and Temperature Manufacturer Shark or equal Range, pH units 1 to 13 Range, temperature 0 to 100 Deg C Number Provided 1 Instrumentation Permeate Flow Manufacturer ABB or equal Type Magnetic Connections 1.5* 150-pound Flange Insert Range, GPM 0 to 50 Number Provided 1 Instrumentation Conductivity Manufacturer Myron L or equal Range, mS/cm 0 to 2.000 Features Digital Display with Adjustable High Alarm Set point Number Provided 1 Permeate Vacuum Release Valve Manufacturer IPEX Size 3/4-inch Type Vacuum Release Number Provided 1 Permeate Check Valve Manufacturer GF Size 1.5-inch Type Y-Pattern Check Valve Number Provided 1 Concentrate Check Valve Manufacturer GF CEO -S= SEAIAIATER SYSTEM I_I_C PACE "S 7 CF 228 EFTA00807666 Size 1.5-inch Type Y-Pattern Check Valve Number Provided 1 High Pressure Piping Material Zeron 100 Super Duplex Stainless Steel Connections Victaulic Type Clamps Material of Construction 2507 Duplex Stainless Steel Pressure Rating 1,200 psi Low Pressure Piping Material Schedule 80 PVC Connections Victau