The written bid documents supersede any verbal or written prior communications between the parties.

Transcription

1 March 15, 2017 INVITATION TO BID The Gwinnett County Board of Commissioners is soliciting competitive sealed bids from qualified suppliers for the Purchase of Water Meters on an Annual Contract with three (3) options to renew for the Department of Water Resources. Bids should be typed or submitted in ink and returned in a sealed container marked on the outside with the BL# and Company Name. Bids will be received until 2:50 P.M. local time on April 11, 2017 at the Gwinnett County Financial Services - Purchasing Division 2 nd Floor, 75 Langley Drive, Lawrenceville, Georgia Any bid received after this date and time will not be accepted. Bids will be publicly opened and read at 3:00 P.M. Apparent bid results will be available the following business day on our website Questions regarding bids should be directed to Kaley Ivins, Purchasing Associate II, at kaley.ivins@gwinnettcounty.com or by calling , no later than 5 P.M. on March 23, Bids are legal and binding upon the bidder when submitted. All bids should be submitted in duplicate. Gwinnett County does not discriminate on the basis of disability in the admission or access to its programs or activities. Any requests for reasonable accommodations required by individuals to fully participate in any open meeting, program or activity of Gwinnett County Government should be directed to Michael Plonowski, Gwinnett County Justice and Administration Center, The written bid documents supersede any verbal or written prior communications between the parties. Award will be made to the supplier(s) submitting the lowest responsive and responsible bid. Gwinnett County reserves the right to reject any or all bids to waive technicalities, and to make an award deemed in its best interest. Bids may be split or awarded in entirety. Gwinnett County reserves the option to negotiate terms, conditions and pricing with the lowest responsive, responsible bidder(s) at its discretion. Award notification will be posted after award on the County website, and companies submitting a bid will be notified via . We look forward to your bid and appreciate your interest in Gwinnett County. Kaley Ivins Purchasing Associate II The following pages should be returned in duplicate as your bid: Compliance Sheet, Page 26 Meter Model Table, Page 27 Bid Schedule, Pages References, Page 31 Code of Ethics, Page 32

2 Page 2 I. GENERAL REQUIREMENTS APPLIES TO All ITEMS GENERAL SPECIFICATIONS General: All meters furnished shall be manufactured by a registered ISO 9001 quality standard facility. Acceptable meters should have a minimum of five (5) years of successful field use. Meters shall be manufactured by a company with a minimum of ten (10) years experience in manufacturing various types of cold water meters such as Multi-jet, Positive Displacement, Compound, Ultrasonic, and Turbine type water meters. All meters must fully comply with USA public law concerning lead content and the safe drinking water act (SDWA). All meter specifications and testing shall meet or exceed the latest revision of AWWA C A. QUANTITY: The quantity of meters listed on the bid schedule form to be supplied during the contract period is only an estimated usage. All meters will be ordered on an "as needed" basis. The successful bidder will be required to supply meters, according to the delivery schedule furnished with purchase orders from time to time for the unit price bid, whether the total quantity ordered shall be greater or less than the quantity specified in the bid schedule. The bidder shall have no claim against the County for any additional compensation by reason thereof. The County has the right to cancel orders without penalty, if such order is overdue 15 days past delivery date and purchase meters from other sources. No compensation shall be paid toward such cancelled orders regardless of the reason for the order being overdue. The contract vendor will pay any additional cost incurred as specified in the General Instructions to Bidders. Meters not meeting the specifications of this solicitation shall be returned to, and replaced by, the vendor at their sole expense, including all related shipping charges. Delivery of unacceptable meters shall not extend the delivery due date for the order. B. FACTORY TEST: Each meter delivered shall be supplied with certified meter accuracy test data attached to the meter. This data shall contain the percent of accuracy at minimum flow, an intermediate flow and maximum flow based on the meter type per AWWA Standards. The meter serial number and date of test must be indicated on the test data. C. CASES: All meters shall have a non-corrosive Water works, and no lead components. All meters shall have cast on them, in raised characters, the size and direction of flow through the meter. The main case shall withstand a working pressure of 150 PSI without leakage, seepage in the castings, or distortion affecting the free and accurate operation of the measuring unit. The size of the meter and the direction of flow shall be cast in raised letters on the outer surface of the case. Cases must be made out of either 316 Stainless Steel, Lead-Free Copper alloy or Epoxy coated Ductile Iron. Cases are not allowed to be made out of composite material. The positive displacement 1-1/2 and 2 meters will need to be copper alloy. The Ultrasonic 1-1/2 and 2 meters may be stainless, copper alloy or epoxy coated ductile iron. Cast Iron is not an acceptable material for this bid in any category.

3 Page 3 1. All 5/8", 5/8x3/4", 3/4x3/4",1",1-1/2, and 2 meters shall have a top and bottom meter case closure made of a lead-free copper alloy containing not less than 75% copper. 2. Meters shall comply with the lead-free requirements as defined by the 2014 provisions of the Safe Drinking Water Act which changes the definition of leadfree from the current 8.0% to not more than a weighted average of 0.25% lead when used with respect to the wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures. 3. Main cases shall be capable of withstanding a hydrostatic burst pressure of 600 psi (or 450 psi with frost bottom). The bottom closure for the copper alloy housing may be copper alloy for 5/8 through 1 or a thermoplastic material. 4. Casings shall not be repairable in any manner. The inlet and outlet shall have a common axis. Connection flanges shall be parallel. 5. All 1-1/2" and 2" Positive Displacement meters shall have a top and bottom meter case closure made of a copper alloy containing not less than 75% copper. The positive displacement 1-1/2 and 2 meters will need to be copper alloy. The Ultrasonic 1-1/2 and 2 meters may be stainless, copper alloy or epoxy coated ductile iron. 6. The housing shall be designed so that at a working pressure of 150 psi, any distortion will not affect the accuracy of the meter. 7. All 1-1/2" and 2" Positive Displacement meters shall have a 1 NPT test plug port shall be available in the outlet side of the meter. 8. The size, model, and direction of flow through the meters shall be cast in the top side of all meter outer cases. 9. All 1-1/2" and 2" Positive Displacement meters shall be of flanged type. Flanges to be provided by supplier shall be no lead bronze. The meters will need to have a companion flange that is FNPT x Flange, and include the nuts bolts and full circle gaskets. The set will consist of: 2 flanges, 2 rubber gaskets, 4 nuts and 4 bolts 10. Meters that do not meet these requirements will be returned to the Manufacturer and replaced with acceptable meters and components at their sole expense. D. EXTERNAL BOLTS AND WASHERS: All external bolts and nuts shall be made of ant seize, bronze or 316 stainless steel, and shall be so designed for easy removal after having been in service for a minimum of 10 years. E. REGISTER BOXES The name of the manufacturer shall be permanently cast or molded in the lid of the register box. The lid and shroud shall be recessed and overlap the register box to protect the lens. The serial number of the meter shall be imprinted on the lid. Register box enclosures, rings, and lids shall be made of engineering thermoplastic or other suitable synthetic polymer. All registers shall be completely and permanently sealed at the factory, so as to be impervious to changes in the atmospheric pressures which could cause moisture within the sealed register chamber, without need for anti-moisture capsules or other condensation preventive devices.

4 Page 4 F. PREPARATIONS FOR DELIVERY: The unit price listed on the bid schedule shall include delivery of all meters to the DWR Central Warehouse located at Department of Water Resources, Central Facility, 684 Winder Highway, Lawrenceville, Ga., Meters should be delivered promptly as scheduled and every attempt should be made to adhere to delivery schedule. G. AFFIDAVIT OF COMPLIANCE The GCDWR may require an affidavit from the manufacturer or vendor that the meters furnished under the purchaser's order comply with all applicable requirements of this specification. Failure to meet any part of the specification may be sufficient cause for rejection. H. SECURITY PROTECTION: All meters where the register is separate or removable from main case shall be affixed in such a way as to prevent tampering. Where registers are mounted on the top of the main case, they shall be locked in place with a tamper-proof screw. All meter serial numbers will be marked on outside of boxes and listed on shipping bill of lading. Meter serial numbers will follow sequential order and will be shipped accordingly. I. LIFE EXPECTANCY AND BATTERIES All 5/8 Thru 2 Meters and Registers that use a battery to register or display units of measure will need to have a minimum of Ten (10) years of life expectancy.. The successful bidder(s) for this solicitation should identify a battery buy-back program/process, if one is in place. The use of copper alloy, Ductile Iron, and/or stainless steel is being required to offset the cost of meter disposal. Cast Iron is not an acceptable material for this bid in any category. J. NOTES: 1. Quotations shall be accepted only from those companies (or their distributors) who are actively engaged in the manufacturing of all parts for their meter and who have a minimum of five years of satisfactory operating experience with their meter. All meters will be guaranteed against defects in materials and workmanship for a period of one (1) year from date of shipment. 2. All compound and Fire Service meters 2 ½ and over must be built with test ports which are readily accessible to field crews when installed in accordance with GCDWR Requirements for Vault Installations which can be found on the GCDWR Backflow Prevention page: 3. All meters 2 ½ and larger shall fit into the standard vault configuration shown on the GCDWR Requirements for Vault Installations which can be found on the GCDWR Backflow Prevention page: without modification to the assembly or the vault. Spacer sections of pipe used to connect shorter meters/meter assemblies will be acceptable.

5 Page 5 4. Unless otherwise specified, water meters furnished under these specifications shall meet the latest revision of the following A.W.W.A. specifications: 5. All 3" through 8" meters will be shipped with wooden pallets as a base. No cardboard or plastic crates will be accepted. II. REGISTERS APPLIES TO ALL ITEMS A. SCOPE The high resolution absolute encoder shall consist of an 8-dial mechanical local register combined with frictionless technology to sense the position of the eight numbers wheels for electronic reading purposes. The high resolution encoder shall utilize the industry standard ASCII protocol for connectivity to an approved endpoint. B. ELECTRONICS The encoder s electronic reading shall be obtained through a frictionless form of encoding technology that determines the position of each number wheel. Absolutely no slide wires, contacts or load fire spring mechanisms will be allowed. The encoder output shall provide an eight digit reading for AMR/AMI endpoints (number of digits sent to the reading software is dependent on the endpoint it is connected to). The encoder output for applications shall have the factory-programmed option of 8 digits. Signal output shall be the industry standard ASCII format and signal type shall be three-wire synchronous for AMR/AMI endpoints. Encoder shall provide unit of measure and factory programmed serial number as part of the encoder message. C. DISPLAY 1. Conventional Odometer Appearance Registers The direct read display shall consist of 8 moveable number wheels and depending on the meter model and size, the encoder face may also contain one or two painted-on zeros. The encoder shall consist of white and black number wheels for readability. The white number wheels correspond to the typical utility standard meter reading in K/Gal. Number wheel colors will be determined by the units of gallons, meter model, and size. Visual reading shall be obtained by reading the number wheels from left to right. Based on meter model and size, the dial face shall include coma separators for billions, millions and thousands separators and decimal points for readings below 1 unit of measure, if applicable.the meter model, size, and unit of measure in gallons shall be designated on the encoder dial face. The encoder shall have a flow indicator; the flow indicator shall be available in red for U.S. gallons. Date of manufacture shall be indicated on the dial face. 2. LCD Display Odometers Any type of encoder to be considered must have a minimum of a ten (10) year battery life guarantee. The direct read display shall consist of 9 or more

6 Page 6 numerical values depending on the meter model and size. The LCD Display must display the total volume (Gallons), and rate of flow (GPM).The display cannot toggle through the different values automatically; but should be able to be toggled through using a manual action, if both values are not constant on the LCD screen. The display cannot depend on light to turn the display on; the use of light may be used to toggle through the different displayed values. All displays that use light to toggle through values, the screens must use natural light; this includes installations installed in low-light scenarios. Visual reading shall be obtained reading the values from left to right. Based on meter model and size, the dial face shall include coma separators for billions, millions and thousands separators and decimal points for readings below 1 unit of measure, if applicable. The meter model, size, and unit of measure in gallons shall be designated on the encoder dial face. The encoder shall have a flow indicator with a rate of flow value (GPM). Date of manufacture shall be indicated on the dial face. The Display must have a constant indicator of all units equal to 000,001, and greater that is designed to indicate KGAL manual readings. If a multiplier is used to meet the visual resolution requirement the multiplying factor must be visible on the display example X10. The factory sealed register shall be electronically driven(solid State) only and shall be furnished with a low flow leak detection symbol and with a reverse flow notification symbol. The register shall be identical within a given size or model subject to the programming of appropriate flow factors for the particular meter. An effectively tamper proof meter with a displayed tamper indication symbol, is required. The register shall be programmed to read in US Gallons. Resolution Size Minimum Range of Visual Resolution Minimum Encoded Resolution 5/8 x3/4,3/4, and 1 0,000, ,000,000.0 Tenths-Millions 1-1/2, 2, 3, 4 00,000, ,000,000. Ones-Ten Million 6,8, and Larger 000,000, ,000,00X.Tens-hundred Million Rate of Flow Size Minimum Range of Visual Resolution Minimum Encoded Resolution (Not Required) 5/8 x3/4,3/4, and GPM GPM 1-1/2, 2, 3, GPM GPM 6,8, and Larger GPM GPM

7 Page 7 D. ENCLOSURE The high resolution encoder shall not be in contact with the water being measured. The encoder shall be designed to assemble to the meter with a four-position bayonet and seal screw fastening. The bayonet mount positions the encoder in any of four orientations on a water meter for visual reading convenience. The high resolution encoder shall be designed to permit removal and exchange without removal of the meter from the service installation or interruption of service water supply. The encoder shall be tamper protected through the use of a tamper-resistant Torx seal screw or equivalent optional proprietary tamper-proof screw that requires a special drive bit to remove the screw. Plastic push pin or plastic tamper devices that need to be destroyed in order to remove the encoder will not be accepted. The encoder shall be encased in a housing, which shall consist of a glass or polycarbonate lens and a non-corrosive metal bottom, which are permanently sealed with adhesive material. The enclosure must be weatherproof, UV-resistant and permanently sealed to withstand harsh environments and provide moisture resistance in flooded or submerged pit applications. The permanent seal between the glass lens and non-corrosive metal bottom of the encoder enclosure shall utilize an adhesive seal without the use of gaskets and shall meet or exceed all applicable requirements of AWWA Standard C706 and C707. Absolutely no gasket seals will be allowed. The encoder shall remain fog-free of moisture. The name or logo of the manufacturer shall be permanently molded and the serial number shall be imprinted on the lid of the encoder box. The lid and shroud components shall overlap to protect the lens and optional identification of the serial number inside the lid. Register box enclosures and lids shall be made of engineering thermoplastic or other suitable synthetic polymer. E. CONNECTIVITY All registers must be encoder type registers, and must have an external radio transmission wire with a waterproof NICOR or equivalent male adapter which has been podded, sealed, and plugged from the factory as to eliminate moisture from entering the adapter. All meters 3 and larger must also have a NICOR or equivalent connector, with a minimum 20 feet of transmission wire between the register and the NICOR connector. The need for the NICOR or equivalent connection from the register is for the future transition to AMR/AMI systems. The equivalent for the NICOR must be able to plug into the standard NICOR connector. F. NOTES: 1. All meters shall be completely and permanently sealed at the factory, so as to be impervious to changes in atmospheric pressures which could cause moisture within the sealed register chamber, without need for an anti-moisture capsule or other condensation preventive devices. Any moisture in register shall constitute failure and register shall be replaced at no cost to Gwinnett County. 2. The register shall be attached to main case in a tamper resistant manner. 3. The register shall be equipped with a hinged lid that will overlap the register to protect the reading area. 4. These specifications cover a self-encoder register metering system designed to obtain remote simultaneous water meter registrations directly from the register odometer. The metering information shall be obtained through a remotely located receptacle using a compatible data capture system. 5. Serial number shall be permanently programmed in the electronic register. 6. The units of registration shall be in U. S. gallons. These units shall be clearly designated on the face of the register. 7. The unit shall employ a leak detection indicator on the face of the register.

8 Page 8 8. Registers using pulse generation conversion of pulses to digital output are not permitted. III. 5/8 x ¾, ¾ AND 1 POSITIVE DISPLACEMENT WATER METERS - ITEMS #1, #2 AND #3 - SPECIFICATIONS FOR NUTATING DISK COLD WATER METERS A. SCOPE This specification covers cold water meters in sizes 5/8", 5/8x3/4", 3/4x3/4", and 1" and the materials and workmanship employed in their fabrication. The displacement meters must be of the type known as nutating disc meters, which are positive in action in that the discs displace or carry over a fixed quantity of water for each nutation of the disc when operated under positive pressure. Meters will meet or exceed all standards of the latest revision of AWWA C700/C710. B. TECHNOLOGY Accuracy is of the utmost importance to this Utility. Therefore, the purchaser requires positive displacement, nutating disc technology to capture the widest accuracy ranges. According to the AWWA Water Research Foundation Study of new meter accuracies at low flow, nutating disc meters have proven to be the most accurate type of mechanical meter in low flow environments and provide the highest out of the box new meter accuracy. C. SIZE, CAPACITY, AND LENGTH Along with the operating and physical characteristics, the nominal size, capacity ratings, related pressure loss limits and length of the meters are shown in Tables 1 and 2. Meters supplied under this specification shall operate without leakage or damage to any part at a working pressure of 150 psi. D. EXTERNAL CLOSURE SCREWS, BOLTS, NUTS, AND WASHERS All external closures shall be designed for easy removal after long services and shall be made of a corrosion resisting stainless steel. E. MEASURING CHAMBERS The measuring chambers, 5/8", 5/8x3/4", 3/4x3/4", and 1", shall be self-contained units, made of a dimensionally stable reinforced thermoplastic, molded without secondary machining, firmly seated, easily removed from the main cases and shall not be a part of the main case. Both halves of the measuring chamber and the internal element shall be marked with the manufacturer s symbol or name. The chamber shall be of two-piece snap joint and be secured in the main casing so that the accuracy of the meter will not be affected by any distortion of the cases when operating at pressures to 150 psi. Control of disc spindle motion shall be by means of a cone shape structure molded as an integral part of the chamber. Measuring chamber diaphragms shall be an integrally molded part of the measuring chamber halves. F. DISCS The measuring disc shall be of the nutating type, made of a suitable engineering thermoplastic polymer with specific gravity approximately equal to that of

9 Page 9 water, molded without secondary machining. The disc shall have sufficient dimensional stability to retain operating clearances at working temperatures to 80 F and not warp or deform when exposed to operating temperature to 100 F and shall be equipped with a thrust roller. G. STRAINERS All meters shall include components that provide a strainer/screen function, molded out of a thermoplastic material. The Strainer shall be designed to last for the lifetime of the meter casing. H. ACCURACY AND PERFORMANCE All meters shall contain a factory test label, which documents the accuracy at high, medium and low flow. The meters shall meet the following requirements for accuracy: 1. At any flow rate within normal test flow limits specified in Table 1, the meter shall register not less than 98.5% and not more than 101.5% of the water actually passed through the meter. 2. At the minimum test flow rate specified in Table 1, the 5/8" and 5/8"x3/4" meters shall register not less than 98.5% and not more than 101.5% of the water actually passed through the meter. 3. At the minimum test flow rate specified in Table1, the 3/4"x3/4" meter shall register not less than 97% and not more than 101.5% of the water actually passed through the meter. 4. At the minimum test flow rate specified in Table 1, the 1 meter shall register not less than 95% and not more than 101.5% of the water actually passed through the meter. 5. All meters shall be guaranteed to meet new meter accuracy for a minimum of two years from date shipped to the County. All meters shall meet accuracy standards of on all normal test flow limits as stated in A.W.W.A. Standard C-700. Meters not meeting these accuracy requirements shall be replaced by the manufacturer at no cost to the County, including shipping. TABLE 1 METER PERFORMANCE CHARACTERISTICS Meter Size Inches / mm Required Safe Maximum Operating Capacity (GPM) Maximum Pressure Loss At AWWA Safe Maximum Operating Capacity (PSI) Recommended Maximum Rate For Continuous Operation (GPM) Minimum Test Flow (GPM) Normal Test Flow Limits (GPM) 5/8"x3/4" GPM 15 1/4 1/2 25 3/4"x3/4" GPM 25 3/8 3/4-35 1" GPM 50 3/4 1-1/4-70

10 Page 10 TABLE 2 DIMENSIONAL DESIGN LIMITS FOR METERS Meter Housing Spuds Pitch Diameter Meter Size Inches Meter Length Threaded Spud Ends Inches Meter Spuds Nominal Thread Size Inches Minimum Inches Maximum Inches 5/8"x3/4" 7-1/2" 1" /4"x3/4" 7-1/2" 1" " 10-3/4" 1-1/4" TABLE 3 MAXIMUM INDICATION ON INITIAL DIAL AND MINIMUM REGISTER CAPACITY Meter Size Inches Maximum Allowable Indication of Initial Dial Minimum Allowable Capacity of Register, Millions Absolute Encoder Register Gallons Gallons Gallons 5/8"x3/4" /4"x3/4" " Minimum Allowable Resolution of Encoded Volume IV. 1-1/2 AND 2" POSITIVE DISPLACEMENT WATER METERS - ITEMS #4 AND #6 - SPECIFICATIONS FOR NUTATING DISK COLD WATER METERS A. SCOPE This specification covers cold water meters in sizes 1-1/2" and 2" and the materials and workmanship employed in their fabrication. The displacement meters must be of the type known as nutating disc meters, which are positive in action in that the discs displace or carry over a fixed quantity of water for each nutation of the disc when operated under positive pressure. Meters will meet or exceed all standards of the latest revision of AWWA C700.

11 Page 11 B. TECHNOLOGY Accuracy is of the utmost importance to this Utility. Therefore, the purchaser requires positive displacement, nutating disc technology to capture the widest accuracy ranges. According to the AWWA Water Research Foundation Study of new meter accuracies at low flow, nutating disc meters have proven to be the most accurate type of mechanical meter in low flow environments and provide the highest out of the box new meter accuracy. C. SIZE, CAPACITY, LENGTH, AND PRESSURE Along with the operating and physical characteristics, the nominal size, capacity ratings, related pressure loss limits and length of the meters are shown in Tables 1 and 2. Meters supplied under this specification shall operate without leakage or damage to any part at a working pressure of 150 psi. D. EXTERNAL CLOSURE SCREWS, BOLTS, NUTS, AND WASHERS All external closures shall be designed for easy removal after long services and shall be made of a corrosion resisting stainless steel. E. MEASURING CHAMBERS 1. The measuring chambers, 1-1/2 and 2, shall be self-contained units, made of a dimensionally stable, reinforced thermoplastic, molded without secondary machining, firmly seated, easily removed from the main cases and shall not be a part of the main case. 2. The chamber shall be of two-piece snap joint and be secured in the main casing so that the accuracy of the meter shall not be affected by any distortion of the cases when operating at pressures to 150 psi. 3. Control of disc spindle motion shall be by means of a cone and support structure molded as an integral part of the chamber top. The support structure shall also serve to position the lower drive pawl, magnet shaft, and magnet assembly which transmit disc nutations to the register. 4. All chambers shall be equipped with a removable, reversible thrust roller insert, inserted into the wall of the chamber. The bearing surface of the insert shall be at least 1/5 the thickness of the outside diameter of the thrust roller head. The chamber magnet shaft shall be stainless steel or ceramic (thermoplastic chamber magnet shafts are not acceptable). Measuring chamber diaphragms shall be an integrally molded part of the measuring chamber halves. F. DISCS The measuring disc shall be of the nutating type, made of a suitable engineering thermoplastic polymer with specific gravity approximately equal to that of water, molded without secondary machining. The disc shall have sufficient dimensional stability to retain operating clearances at working temperatures to 80 F and not warp or deform when exposed to operating temperature to 100 F and shall be equipped with a thrust roller and a stainless steel disc spindle.

12 Page 12 G. STRAINERS All meters shall be provided with strainer screens of rigid molded thermoplastic material which fit snugly, are easy to remove, and have an effective straining area at least double that of the main-case inlet. The Strainer shall be designed to last for the lifetime of the meter casing. H. REGISTRATION ACCURACY When tested with potable water at a minimum temperature of 80 F, at any rate of flow within the normal test flow limits specified in Table 1, the meter shall register not less than 98.5% and not more than 101.5% of the water actually passed through the meter. At the minimum test flow rate, the meter shall register not less than 95% and not more than 101.5% of the water actually passed through the meter. I. ACCURACY AND METER PERFORMANCE All meters shall contain a factory test label, which documents the accuracy at high, medium and low flow. All meters shall be guaranteed to meet new meter accuracy for a minimum of two years from date received by the County. All meters shall meet accuracy standards of 98.5 to percent on all normal test flow limits as stated in A.W.W.A. Standard C-700. Meters not meeting these accuracy requirements shall be replaced by the manufacturer at no cost to the County, including shipping. TABLE 1 METER PERFORMANCE CHARACTERISTICS Meter Size Required Safe Maximum Inches Maximum Pressure Loss At Operating Capacity (GPM) AWWA Safe Maximum Operating Capacity (PSI) Recommended Maximum Rate For Continuous Operations (GPM) Minimum Test Flow (GPM) Normal Test Flow Limits (GPM) 1-1/2" Elliptical GPM /4 2-1/ " Elliptical GPM /2 2-1/7-170 TABLE 2 DIMENSIONAL DESIGN LIMITS FOR METERS Meter Size - Inches Flanged Ends - Inches 1-1/2" 13" 2" 17"

13 Page 13 V. 1-1/2 AND 2 ULTRASONIC WATER METERS - ITEMS #5 AND #7 - SPECIFICATIONS FOR ULTRASONIC COLD WATER METERS A. Scope This specification covers Cold Water Ultrasonic Meters in sizes 1-1/2 and 2, and the materials and workmanship employed in their fabrication. The meter must utilize ultrasonic measurement technology and have no moving parts within the meter. B. Meter Description The basis for measurement is the use of ultrasonic signals sent consecutively in forward and reverse directions of flow. Velocity is determined by measuring the time difference between the measurement in the forward and reverse direction. Flow totalization can then be calculated from the measured flow velocity using water temperature and pipe diameter. The meter is all electronic with totally potted circuitry, display and battery. There are no moving parts to wear or replace and meter and register are sealed, non-removable and protected from tampering. C. Size, Capacity, and Length Along with the operating and physical characteristics, the nominal size, capacity ratings, related pressure loss limits, and length of the meters are those shown in Table 1 and 2. Meters supplied under this specification shall operate without leakage or damage at a working pressure of 175 psi. D. Metering Tube The housing shall be designed so that at a working pressure of 175 psi, any distortion will not affect the accuracy of the meter. Metering tube shall not be repaired in any manner. The flow direction and meter size shall also be cast, molded or imprinted in the meter tube and the inlet and outlet shall have a common axis. E. Metering Insert The ultrasonic metering insert shall be self-contained within the meter flow tube, seated, and not removable. The insert shall be secured to the main case, providing a method of minimizing turbulence and cleaning the reflectors, so that the accuracy of the meter will not be affected by any distortions of the case when operating at a pressure of 175 psi. The metering insert shall be made of engineered thermoplastic and stainless steel and the ultrasonic transducers shall be wetted components that extend through the meter tube and shall have a surface of stainless steel.

14 Page 14 F. Electronic Meter and Register The electronic circuit shall be micro-processor based and include a non-replaceable, replaceable battery, and non-volatile memory capable of storing all programmable data and accumulated data. The circuit shall control the ultrasonic transducers. No field programming or calibration shall be necessary. The entire meter circuit and related components shall be fully potted and sealed from water intrusion. No components shall require service or replacement over the life of the meter. For reliability, the use of inductive coil technology shall not be permitted with an electronic residential meter. G. Register Boxes The name or logo of the manufacturer shall be permanently cast, molded or imprinted and the serial number shall be imprinted on the lid of the register box. The lid and shroud components shall overlap to protect the lens. Register box enclosures and lids shall be made of engineering thermoplastic or other suitable synthetic polymer. H. Register/Display 1. The Register shall be encased in an integral non-corrosive plastic housing, with the electronics, display, and battery completely potted within. It must be permanently epoxy sealed to provide moisture resistance to flooded pit or submerged conditions. The moisture resistant seal between the lens and non-corrosive plastic housing shall be permanent. 2. The Register shall be an integral part of the meter assembly. The register must be available as either factory pre-wired to an inline waterproof NICOR or equivalent connector that can be used to connect to an endpoint. 3. The Register shall consist of an electronic local display combined with electronic circuitry to provide a high resolution absolute encoder output. This electronic register assembly shall transmit a signal through properly shielded (grounded) transmission wire for AMR connectivity. 4. The High Resolution Absolute Encoder Register option shall use an industry ASCII protocol. Capable of sending a 9-digit encoder output to the endpoint as well as extended status messages. Resolution being sent to the reading software is based on the output of the endpoint. 5. The display shall be a straight reading, permanently sealed electronic LCD with digits at least 0.25 inches high. The display will contain 9 digits plus a decimal point and display consumption, units of measure, rate of flow and alarm information. The digital display shall provide a totalized consumption resolution to 0.1 gallons for 1-1/2 and 2 meters. The maximum indication on the dial and the minimum allowable capacity of the register shall comply with Table The size, model, and direction of flow through the meters shall be permanently cast, molded or imprinted on the topside of all meter displays. The units of registration, U.S. gallons shall also be designated on the Register display. The GPM flow indicator can be utilized as a flow indicator for leak detection. 7. The Register shall have a lid that covers the display face for added protection and optional identification of the permanently cast, molded or imprinted serial number. Rate of Flow and Temperature Size Minimum Range of Visual Resolution Minimum Encoded Resolution (Not Required) Degrees Fahrenheit(Visual) 1-1/2, GPM GPM 33⁰-110⁰ 3,4,6,8, and Larger GPM GPM 33⁰-110⁰

15 Page 15 I. Registration Accuracy Specified in Table 1, at any flow rate within normal test flow limits, the meter shall register not less than 98.5% and not more than 101.5% of the water actually passed through the meter. At the minimum test flow rate, the meter shall register not less than 97.0% and not more than 103.0% of the water actually passed through the meter. J. Rejected Meters The manufacturer shall repair or replace, at its option, without charge, all meters rejected for failure to comply with this specification. The repair or replacement will also include shipping. K. FM and UL All 1-1/2 and 2 meters must indicate whether they are FM approved and/or UL listed if applicable. All meter models shall be at a minimum ultrasonic type with at least two transit time paths. Table 1: Meter Performance Characteristics Meter Size Required Safe Maximum Operating Capacity Maximum Pressure Loss At AWWA Safe Maximum Operating Capacity Recommended Maximum Rate For Continuous Operations Extended Low Flow Normal Test Flow Limits 1-1/2 Elliptical 100 gpm gpm 100 gpm 0.40 gpm gpm 2" Elliptical 160 gpm gpm 160 gpm 0.50 gpm gpm Table 2: Dimensional Design Limits for Meters Minimum Meter Size Lay Length Thickness at Bolt Hole Diameter of Bolt Circle Number of Bolt Holes 1-1/2" Elliptical 13" 9/ /16 Diameter of Bolt Holes 2 Elliptical 17 5/8 4-1/2 2 13/16

16 Page 16 Table 3: Maximum Indication on Initial Dial and Minimum Register Capacity Meter Size Maximum Allowable Indication of Initial Dial Electronic Encoder Register Gallons Minimum Allowable Capacity of Register Gallons 1-1/2" ,000,000 2" ,000,000 VI. 3 AND 4 COMPOUND WATER METERS - ITEMS #8 AND #10 - SPECIFICATIONS FOR COMPOUND COLD WATER METERS General: All Meters must meet the general Meter requirements listed above; the items in this section apply specifically to the meter type in question. All specifications shall meet or exceed the latest revision of AWWA requirements as appropriate for the meter size and function. A. TYPE: Compound meters shall consist of a combination of an AWWA Class II turbine meter for measuring high rates of flow and a nutating disc type positive displacement meter for measuring low rates of flow enclosed in a single main case. An automatic valve shall direct flows through the disc meter at low flow rates and through the turbine meter at high flow rates. At high flow rates, the automatic valve shall also serve to restrict the flow through the disc meter to minimize wear. The nominal size of compound-style meters shall be the same as the nominal size of the main casing connections. Meters with reducers or other fittings added on to the main casing for the purpose of adapting a smaller nominal size meter to fit into a larger size connection will not be acceptable. B. LENGTH: The maximum overall length of the unit shall be as follows: METER SIZE LENGTH 3 inch 17 4 inch 20 C. REGISTERS: All registers shall be completely and permanently sealed at the factory so as to be impervious to changes in atmospheric pressures which could cause moisture within the sealed register chamber, without need for anti-moisture capsules or other condensation preventive devices.

17 Page 17 D. CASE and COVER: The main case and cover shall be cast from no lead bronze or ductile iron. The size, model, and arrows indicating direction of flow shall be cast in raised characters on the main case and cover. The covers all contain a stainless steel calibration vane for the purpose of calibrating the turbine measuring element while the meter is in-line and under pressure. A test port shall be located in the main case or the cover for the purpose of field testing of the meter. E. CONNECTIONS: The 3 inch meter shall be furnished with a four bolt style flanged ends without couplings. The 4 inch through 8 inch meters shall be furnished with eight bolt style flanged ends without couplings. Flange ends shall be bronze or ductile iron. F. ACCURACY: All meters shall be guaranteed to meet new meter accuracy for one year from date received by the County. All meters shall meet accuracy standards of 98.5 to percent on all normal test flow limits as stated in A.W.W.A. Standard C Meters not meeting these accuracy requirements shall be replaced as a complete assembly as originally supplied by the manufacturer at no cost to the County, (including shipping). Registration accuracy at the crossover shall not be less than 97% for 3" and 4" sizes. Meter Size Normal Operating Maximum Head Loss At Maximum Maximum Capacity Inches Range (gpm) Continuous Flow (psi) Continuous (gpm) (gpm) Extended Low Flow 3 1/ /4 4 3/ /8 G. SECURITY: All meters where register is separate or movable from main case shall be affixed in such a way as to prevent tampering. Where registers are mounted on the top of the main case, they shall be locked in place with a tamper-proof screw. All meter serial numbers will be marked on outside of boxes and listed on shipping bill of lading. Meter serial numbers will follow sequential order and will be shipped accordingly. H. SHIPPING: All 3" through 8" meters will be shipped with wooden pallets as a base. No cardboard or plastic crates will be accepted. I. MEASURING CHAMBERS: The turbine measuring chamber shall be a self-contained unit, attached to the cover for easy removal. The turbine shaft shall be tungsten carbide inserts and shall

18 Page 18 rotate in removable graphite/ceramic bushings. Thrust bearings shall be tungsten carbide or ceramic. J. UNITIZED MEASURING ELEMENT: A UME is a complete assembly, factory calibrated to AWWA standards that includes the cover, registers, and both a turbine measuring element and a nutating disc chamber assembly. It shall be easily field removable from the meter body without the requirement of unbolting flanges. VII. 3 THRU 8 ULTRASONIC WATER METERS - ITEMS #9, #11, #12, AND #14 - SPECIFICATIONS FOR ULTRASONIC COLD WATER METERS A. General Except as otherwise modified or supplemented herein, the latest revision of AWWA Standard C750 Transit-Time Flowmeters shall provide theory and operation specifics on the basic ultrasonic concept. This document will govern the materials, design, manufacture and testing of all meters furnished under this specification or equal as approved by the Director or his appointed agent. AWWA Standard C750 is considered by the GCDWR to be only the minimum requirements and shall be supplemented herein to ensure the quality required by the utilities department. Meters shall be manufactured by a company with a minimum of ten (10) years experience in manufacturing various types of cold water meters such as Multi-jet, Positive Displacement, Compound and Turbine Type water meters. Meters shall be bid without strainers and without companion flanges. The water utilities department reserves the right to request a sample meter of a small size to study prior to awarding bids. B. METER MAIN CASE Outer cases shall provide full compliance with ANSI/NSF 372 (AB1953 or NSF61 G), and be made of one of the following materials: 2 1/2 12 : Cast ductile iron alloy equaling or exceeding AWWA Standards such as those listed in ASTM A536 or ASTM A126. The main case shall be protected by a complete fusion-bonded coating conforming to AWWA C /2 12 : Stainless Steel SAE Grade 316 equaling or exceeding AWWA Standards such as those listed in ASTM A269. All external bolts and nuts shall be made of bronze or stainless steel, and shall be so designed for easy removal after having been in service for a long period of time. The main case shall withstand a working pressure of 175 PSI without leakage, seepage in the castings, or distortion affecting the free and accurate operation of the measuring unit. The size of the meter and the direction of flow shall be case in raised letters on the outer surface of the case. C. REGISTER COVER The register box shall be made of an engineering plastic with the manufacturer s serial number inside the register lid. Serial number of the meter shall also be permanently programmed in the electronic register. Register cover box shall be attached to main case in a tamper resistant manner. The register cover box shall be equipped with a hinged lid that will overlap the register to protect the reading area.

19 Page 19 D. REGISTER The factory sealed register shall be electronically driven only and shall be furnished with a low flow leak detection symbol and with a reverse flow notification symbol. The register shall be identical within a given size or model subject to the programming of appropriate flow factors for the particular meter. An effectively tamper proof meter with a displayed tamper indication symbol, is required. The register shall be programmed initially to read in US. Gallons as ordered by the GCDWR. The transparent LCD register glass lens shall be made of molded heat-treated 0.25 glass to ensure against scratching and breakage. Serial number shall be permanently programmed in the electronic register. As defined in these specifications, a "factory sealed" register shall mean a non-fogging, moisture and dust-proof register, electronically driven by the measuring section transit time sensors. Appearance of any fogging or moisture inside the register within the warranty period shall constitute component failure and will require a factory replacement at no cost to Gwinnett County. Register shall indicate reverse flow, rate of flow, low battery indication, leak alert, as well as no flow condition. Rate of Flow and Temperature Size Minimum Range of Visual Resolution Minimum Encoded Resolution (Not Required) Degrees Fahrenheit(Visual) 1-1/2, GPM GPM 33⁰-110⁰ 3,4,6,8, and Larger GPM GPM 33⁰-110⁰ E. MEASURING SECTION The measuring section shall be a unitized unit, completely integral to the meter body. The measuring section shall not include any moving parts and the measuring section shall have an unobstructed flow passage area at least equal to 50% of the nominal Schedule 40 pipe size corresponding to the meter s size. All parts of the measuring section shall be similar with assemblies of the same size and material. The measuring section shall be secured in a position in the main case in such a manner that slight distortion of the outer meter case will not affect the sensitivity or registration of the meter. To ensure longevity of service, the performance of the measuring chamber shall be guaranteed to meet required Compound meter accuracy standards of AWWA M6 Manual for a period of two years from date of manufacturer s shipment. The measuring section shall be covered for this period by written warranty as required or mentioned elsewhere in these specifications. F. SIGNAL PROCESSING Paired transducers are to be mounted in the chordal direct configuration in the measuring section to measure the actual transit time of the initiated and reception-generated ultrasonic sound pulses. Transit time measurements for a single pass of initiated and return pulses are to be accurate to within 300 picoseconds for a loop time. Multiple measurements are sampled at a minimum of 1 second intervals of these transit time loops that are made to significantly improve accuracy over a single pass transit time measurements as employed in typical AWWA C750 ultrasonic meters to achieve low flow rate measuring

20 Page 20 accuracy. Ultrasonic meters using single directional sound transmission to determine flow measurements are not acceptable. Meters that use measurement principals based on Faraday s Law are not permitted. G. SIGNAL OUTPUTS The meter shall have encoder output. The Encoder Output is to be serial communication collector utilizing UI1203 or UI1204 communication protocol. H. INSTALLATION REQUIREMENTS Meters shall be designed so that no strainer or straightening vanes are required. There shall be no internal parts blocking the waterway. No straight runs of pipe shall be necessary before or after the meter. I. ACCURACY AND HEAD LOSS TESTS Meters shall meet or exceed current AWWA C-702 test flow, head loss and accuracy standards as follows. SIZE SAFE MAXIMUM FLOW RATE NORMAL FLOW RANGE ACCURACY % HEAD SAFE MAXIMUM EXTENDED LOW FLOW RANGE ACCURACY + 5 % LOW FLOW SENSITIVITY GPM 1 GPM GPM 0.50 GPM 2.4 PSI 1/16 GPM 4 1,000 GPM 1 1/2 GPM - 1,000 GPM 0.75 GPM 3.7 PSI 1/16 GPM 6 1,600 GPM 3 GPM - 1,600 GPM 2 GPM 0.7 PSI 3/4 GPM 8 2,800 GPM 5 GPM - 2,800 GPM 4 GPM 1.9 PSI 3/4 GPM 10 5,500 GPM 14 GPM - 5,500 GPM 8 GPM 2.9 PSI 2.5 GPM 12 x10 5,500 GPM 14 GPM - 5,500 GPM 8 GPM 2.9 PSI 2.5 GPM J. PRESSURE CAPABILITY Meters shall operate up to a working pressure of one hundred seventy five (175) pounds per square inch (PSI) and to a temperature of 122 degrees Fahrenheit, without leakage or damage to any parts. The accuracy shall not be affected when operating at this pressure to possible distortion. All meter models above shall be at a minimum ultrasonic type with at least two transit time paths.

21 Page 21 K. BIDDERS RESPONSIBILITY TO THIS SPECIFICATION It is the responsibility of each bidder to carefully examine these specifications and the bid documents and become familiar with the requirements set forth herein. In addition, it is the responsibility of each bidder to submit all necessary information concerning their product to the GCDWR. Failure to do so could result in your bid being declared as non-responsive. L. FM Approval All 3-12 meters must indicate whether they are FM approved and/or UL listed if applicable. VIII. 3 HYDRANT METERS WITH GATE VALVE ITEM #16 General: All Meters must meet the general Meter requirements listed above; the items in this section apply specifically to the meter type in question. A. TYPE Meters shall be of the horizontal-axis high velocity type per AWWA Class II and designed for mobile use in metering flow from fire hydrants. B. CAPACITY The capacity of the meters in terms of normal operating range and maximum continuous rates flow rates are as follows: Size Normal Operating Range Max. Continuous C. SIZE Overall length of meter shall be as follows: Size Meter Length 3 Less Couplings 15-1/4 or shorter 3 With Couplings 19-1/4 or shorter D. CASE AND COVER The main case shall be cast aluminum and the cover cast lead free bronze. The main case and cover shall be finished with a thermo-plastic coating for corrosion resistance. The size, model, arrows, indicating direction of flow, and AWWA Class II shall be cast in raised characters on the main case or cover. The case shall be equipped with a balanced handle for ease of carrying and installation. The cover shall contain a calibration vane for the