Attachment_C_-_Irrigation_Specification.pdf

Attachment C

Irrigation Specification

PART 1 - GENERAL

1.1 QUALITY ASSURANCE & REQUIREMENTS

A. Manufacturer’s Directions: Manufacturer’s directions and detailed drawings shall be followed in all cases where the manufacturers of articles used in this Contract furnish directions covering points not shown in the Drawings and Specifications.

B. Ordinances and Regulations:

1. Comply with all local, municipal, and state laws, rules and regulations.

2. Conform to applicable provisions of the latest editions of the Uniform Plumbing Code, the National Electric Code and all codes properly governing the materials and work at the project site.

3. All municipal and state laws, and rules and regulations governing or relating to any portion of this work are hereby incorporated into and made a part of these Specifications and shall apply to all work of this Section with the same force and effect as though repeated in full herein. The Contractor shall carry out their provisions. Anything contained in these Specifications shall not be construed to conflict with any of the above rules, regulations, or requirements. However, when these Specifications and Drawings call for or describe materials, workmanship, or installation of better quality, higher standard, or larger size than is required by the above rules and regulations, the provisions of these Specifications and Drawings shall take precedence.

C. Explanation of Drawings:

1. Due to the scale of the Drawings, it is not possible to indicate all offsets, fittings, sleeves etc., which may be required. The Contractor shall carefully investigate the structural and finished conditions affecting all of his work and plan his work, accordingly, furnishing such fittings, etc., as may be required to meet such conditions. Drawings are generally diagrammatic and indicative of the work to be installed. The work shall be done in such a manner as to avoid conflicts between the irrigation system, planting, underground utilities, above ground utilities and architectural features.

2. Work called for on the Drawings by notes or details shall be furnished and installed whether or not specifically mentioned in the Specifications.

3. The Contractor shall not willfully install the replacement irrigation controllers as shown on the Drawings when it is obvious in the field those obstructions, grade differences, or discrepancies in area dimensions exist that might not have been considered in engineering. Such obstructions or differences should be brought to the attention of the County's Authorized Representative. In the event this notification is not performed, the Contractor shall assume full responsibility for any revision necessary.

D. Reference specification and standards:

1. ASTM: D1784 Rigid Poly (Vinyl Chloride) Compounds and Chlorinated Poly (Vinyl Chloride) Compounds.

2. ASTM: D1785 Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80 and CL200

3. ASTM: F441 Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40, 80 and

CL200.

4. ASTM: D2464 Threaded Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80

5. ASTM: F437 Threaded Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80.

6. ASTM: D2466 Socket-Type Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.

7. ASTM: F438 Socket Type Chlorinated Poly (Vinyl Chloride)

(CPVC) Plastic Pipe Fittings, Schedule 40.

8.ASTM: F2564 Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Pipe and Fittings.

9. ASTM: F493 Solvent Cements for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe and Fittings.

10. The latest edition of the City of Los Angeles Standard Plans and Specifications.

E. Protection of Work and Materials:

1. Contractor shall protect its work and work of others for the duration of the Contract. The Contractor shall protect pipes and fittings from direct sunlight and avoid undue bending and any concentrated external loading. Pipe or fittings that have been damaged shall not be used.

2. The Contractor shall exercise extreme care in excavating and working near utilities. Damage to utilities that are caused by Contractor's operation shall be the Contractor's responsibility.

3. The Contractor shall take necessary precautions to protect site conditions and plant material.

Should damage be incurred, Contractor shall repair damage to its original condition or furnish and install equal replacements. Existing irrigation systems shall be always kept in operation. If the existing system is damaged by the Contractor, the Contractor shall be responsible for immediate repair of such damage. After each repair, all heads of the repaired system shall be removed so that the lines can be cleared of all dirt and foreign matter.

F. Correction of Work:

1. Discrepancies or unsatisfactory work shall be corrected by the Contractor. The correction of work shall be finished within a reasonable period mutually agreed upon between County and Contractor.

G. Materials:

1. Use only new materials of brands and types noted on the Irrigation Plans or specified herein.

1.2 SUBMITTALS

A. Material List:

1. The Contractor shall furnish the articles, equipment, materials, or processes specified by name in the Drawings and Specifications. No substitution will be allowed without prior written approval from the County's Authorized Representative.

2. Complete material list shall be submitted prior to performing any work. Material list shall include the manufacturer, model number, and description of all materials and equipment to be used.

3. Although manufacturer and other information may be different, the following is a guide to proper submittal format:

Item Manufacturer Model Number Description

1. HydroPoint Weather TRAK ETPRO3-OXR Weather based automatic irrigation controller with OptiFlow OXR technology

2. Paige Electric #P7162D Flow sensor cable

3. ETC. ETC. ETC.

4. The irrigation submittal must be specific and complete with a full description of product use. All items must be listed and should include solvent/primer, wire, wire connectors, valve boxes, etc. No copies of manufacturer's literature (catalog cuts) are required as submittal information

5. The Contractor may submit substitutions for equipment and materials listed on the Irrigation Drawings by following procedures as outlined in Section 1.07 of the Irrigation Specifications.

6. Equipment or materials installed or furnished without prior approval of the County's Authorized Representative may be rejected and the Contractor may be required to remove such materials from the site at his own expense.

7. Approval of any item, alternative or substitute, indicates only that the product or products apparently meet the requirements of the Drawings and Specifications based on the information or samples submitted.

8. Manufacturer's warranties shall not relieve the Contractor of his liability under the guarantee. Such warranties shall only supplement the guarantee.

B. Record Drawings:

1. No portions of the existing irrigation system within the limit of work will be required to be shown on the record drawings. New work will be shown within the controller mapping software as a part of the automatic controller commissioning services.

2. The contractor shall be available to aid in locating any modified irrigation equipment for the automatic controller commissioning services representative.

3. Automatic controller commissioning services shall include required as-built information and shall be included in the contract bid price as outlined in the Products section of this specification.

C. Operation and Maintenance Manuals:

1. Prepare and deliver to the County's Authorized Representative within ten (10) calendar days prior to completion of work, two (2) hard-cover, three-ring binders containing the following information:

a. Index sheet which states Contractor's name, address, and telephone number, and which lists each installed equipment and material item, including names and addresses of manufacturers' local representatives.

b. Catalog and parts sheets on every new material and equipment item installed under this Contract.

c. Complete operating and maintenance instructions on all major equipment.

d. Guarantee statement.

e.Manufacturer/Distributor installation certification letter for each controller installed under this contract.

f. Completed Irrigation Guarantee Statement.

g. Acceptance document signed by County’s authorized representative.

2. In addition to the above-mentioned maintenance manuals, provide the County's maintenance personnel with instructions for major equipment and show evidence in writing to the County’s Authorized Representative prior to start of landscape maintenance that this service has been rendered.

D. Contractor Furnished Equipment:

1. Supply as a part of this contract the following:

a. Operation and maintenance manuals.

b. Irrigation controller certification letter from an Authorized WeatherTRAK OptiFlow XR weather-based irrigation controller distributor for each controller installed under this Contract.

c. Two (2) keys for each irrigation controller.

d. Irrigation controller manuals.

e. Completed Irrigation Guarantee Statement.

f. Acceptance document to be signed by County’s authorized representative.

2. The above-mentioned equipment shall be turned over to the County prior to start of landscape maintenance. Before landscape maintenance and final observation can occur, evidence that the

County has received these items must be shown to the County’s Authorized Representative. Refer to “TURNOVER AND ACCEPTANCE FORM” portion of these specifications for additional information.

E. Checklist:

1. Provide the County with the following checklist information at the end of each segment of the project. This checklist must be completed prior to start of maintenance.

a. Material approvals. By whom approved and date.

b. Manufacturer's warranties, if required: Recipient and date.

c. Written guarantee: Recipient and date.

1.3 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. Handling of PVC Pipe and Fittings: The Contractor is cautioned to exercise care in handling, loading, unloading, and storing PVC pipe and fittings. PVC pipe shall be transported in a vehicle, which allows the length of pipe to lie flat so as not to subject it to undue bending or a concentrated external load at any point. Any section of pipe that has been dented or damaged will be discarded, and if installed, shall be replaced with new piping.

1.4 PROJECT CONDITIONS

A. The project site irrigation system includes sprinkler heads, mainline piping, lateral line piping, electric control valves, gate valves, quick coupling valves, etc. exist as a total and complete operational irrigation system and shall be protected in place.

1.5 GUARANTEE

A. The guarantee for the irrigation system shall be made in accordance with ATTACHMENT F – Guarantee for Irrigation System.

B. A copy of the guarantee form shall be included in the operations and maintenance manual.

C. The guarantee form shall be re-typed onto the Contractor's letterhead and shall contain the following information:

1.6 TURNOVER TO COUNTY

A. The checklist, turnover and acceptance forms shall be re-typed onto the Contractor's letterhead. See Exhibit B - TURNOVER AND ACCEPTANCE FORM for sample. The form shall be completed by the contractor and shall contain all the information shown on the sample checklist form and turned over to the County once all work has been completed.

PART 2 - PRODUCTS

2.1 EXISTING IRRIGATION EQUIPMENT AND MATERIALS

A. As noted on the drawings, the project site irrigation system including sprinkler heads, mainline piping, lateral line piping, electric control valves, gate valves, quick coupling valves, etc. exist as a total and complete operational irrigation system and shall be protected in place.

2.2 NEW IRRIGATION EQUIPMENT AND MATERIALS

A. General: Use only new materials of brands and types noted on drawings, specified herein, or approved equals.

B. Master Valve/Flow Sensor Assembly:

1. The master valve assembly includes a master valve, flow sensor and air relief valve. The final installation of the master valve and flow sensor assembly shall be made by the contractor. The “Pressure Reducing Master Valve with FlowHD Flow Sensor” detail shown on the drawings indicates installation intent. Because below grade information is not available, the Contractor may be required to adjust installation requirements to meet the design intent.

2. Master valves shall be Cla-Val model # 93-01-ASY-G-F-NO 6" pressure regulating master valve with 6" Cla-Val normally open (energize to close) master valve. Cla-Val #93-01-ASY pressure reducing and solenoid shutoff 24-volt globe pattern master valve with X46A flow clean strainer, cv speed control and X43 "Y" strainer. Refer to details for installation information.

3. Flow Sensor shall be a WeatherTRAK model #WTFLOWHD-I-600 shall be 6” size and shall be installed in accordance with Drawings and manufacturer’s installation instructions

4. The air relief valve shall be a 1” Crispin #IC10A.

5. Ductile iron flange x bell adapter, clam shell restraints and PVC repair coupling shall be

Harco as manufactured by the Harrington Corporation. Refer to drawings for model numbers.

6. All flanged fittings and spools shall be constructed from Class125 ductile iron in accordance with ANSI/AWWA C110/A21.10 and ANSI B16.1.

7. 7. Install entire assembly within a Carson Model #24 series deep plastic vault and plastic bolt-down cover with valve extensions as required. 60” x 27”x 30” C. Control Wiring:

1. Wire requirements are as follows:

a. Control wiring shall be made with direct burial copper wire AWG-U.F. 600 volt. In no case shall wire size be less than #14 AWG.

b. Master valve control and common wires shall be installed within 1-1/2 schedule 40 PVC conduit along with flow sensor cable. Conduit shall be gray in color. Wires shall be a different color than the control, common and spare wires used for the associated irrigation controller.

2. Existing electric control valves, an expansion curl shall be provided within three (3) feet of each wire connection. Expansion curl shall be of sufficient length at each splice connection at each electric control valve, so that in case of repair, the valve bonnet may be brought to the surface without disconnecting the control wires. Control wires shall be laid loosely in trench without stress or stretching wire conductors.

3. Control wire connection splices shall be made with GPH GDBRY6 direct bury splice kits or approved equal. Make only one (1) splice with each splice kit.

D. Weather Based Irrigation Controller Assembly:

1.Weather based irrigation controller(s) shall be of size and type show on the drawings.

2. WeatherTRAK OptiFlow XR series irrigation controller shall be pre-assembled by approved controller enclosure assembly manufacturer.

3. Stainless steel controller assemblies, as specified, shall provide the County with a written, ten

(10) year Limited Warranty with onsite technical support on each complete assembly and a “Certificate of Compliance” certifying that each assembly has been properly installed on the project site.

4. Controller enclosures shall be installed on concrete base per irrigation details shown on the drawings.

5. Irrigation controller and accessory products, as specified, shall be installed in VIT Products or approved equal stainless-steel enclosures. Controller assemblies shall include a ten (10) year pre-paid data subscription to the WeatherTRAK OptiFlow XR Central Irrigation management (CIM) service for each irrigation controller.

a. Controller Enclosure Assembly features shall include:

1) Locking stainless steel enclosure with stainless steel back plate. If controller is to be installed indoors, unit shall be mounted within stainless steel wall mount assembly and secured to interior wall with anchor bolts of size and type required for wall material and weight of controller assembly.

2) Controller sizes available: 12, 18, 24, 30, 36, 48, 72 and 96 stations.

3) WeatherTRAK OptiFlow XR antenna communication card and external mount pancake antenna with cable.

4) The controller assembly shall be equipped with a high flow shut-off assembly for use in conjunction with a master valve to monitor and shut down the irrigation system in the event of an excess flow condition.

5) In the event of a high flow shut off, the controller shall be capable of sending an alarm message by email or text messaging to up to three (3) separate communication devices.

6) The WeatherTRAK OptiFlow XR controller will be capable of station-level flow sensing and alert notification from a single flow meter and master valve as a standard feature The controller must support an unlimited number of stations on a site or water source.

7) WeatherTRAK OptiFlow XR series controllers shall include a factory installed Radio Remote Ready Connector.

8) Primary voltage transient protection.

9) UL Approved 120 VAC transformer.

10) Ground rod as a part of controller assembly.

11) User manual with step-by- step programming instructions delivered with controller.

b. Irrigation scheduling capabilities must include:

1) Operation of individual station programs as established as a part of the Automatic

Controller Commissioning Services program. Controller Commissioning Services program. Refer to WeatherTRAK Automatic Controller Commissioning Service section of these specifications for additional information.

2) Irrigation schedules shall be automatically updated based upon real-time ET adjustments of each controller station’s run times using WeatherTRAK OptiFlow XR.

3) Cycle and soak programming.

4) Sequential stacking of overlapping starting times or run up to two (2) or more programs simultaneously.

5) Independent station adjustments from one (1) % to 300% in one (1) % increments.

6) Non-volatile memory to maintain programs in case of power outage.

7) Review mode provides schedule and program information for each individual station.

8) Built-in alert functions for short detection and programming conflicts.

c. WeatherTRAK OptiFlow XR Advanced Flow Management:

1) The WeatherTRAK OptiFlow XR controller shall be able to share flow when connected to a flow sensor and master valve and shall monitor for mainline breaks, station high flows and leaks for all WeatherTRAK controllers using that designated point of connection.

2) WeatherTRAK Advanced Flow Management Service shall flow optimize WeatherTRAK OptiFlow OXR controllers for an entire site.

No additional computer or local wireless communication is required.

3) WeatherTRAK’s Advanced Flow Management service shall extend WeatherTRAK’s Central Internet Management Service to provide daily flow optimization for a single or multiple WeatherTRAK controllers on an entire site. WeatherTRAK Advanced Flow Management shall flow optimize across single or multiple mainlines sharing a single water source.

The WeatherTRAK Advanced Flow Management Service is required for each controller that utilizes WeatherTRAK s advanced flow functionality.

4) Each WeatherTRAK OptiFlow XR irrigation controller installed on this project shall include a 5year WeatherTRAK Advanced Flow Management Service plan Part #CIM +OFS-5YA.

d. Manual Operation features shall include:

1) Controller shall be capable of allowing user to manually start stations for supplemental irrigation, for system testing and for system troubleshooting and repair.

2) Controller shall be capable of manual operation of individual valve stations or all stations from one (1) to nine (9) hours and 59-minutes in one (1) minute increments.

e. Electrical Requirements:

1) Input power required: 117 VAC +/- ten (10) %, 60 HZ capable of operating up to two (2); 24 VAC solenoids per station while running one (1), 24 VAC pump/master valve output circuit.

2) Total controller output: maximum 1.5 amps at 24 VAC including amperage for the master valve/pump start.

3) Power supply overload, back-up fuse: 1.5 amps with surge protection on 24V output board.

f. WeatherTRAK OptiFlow XR Everywhere Service:

1) Each WeatherTRAK OptiFlow XR irrigation controller installed on this project shall include wireless Data service.

2) Wireless Data service shall include daily local ET values transmitted wirelessly to controller, automatic program adjustments by station.

3) ET values shall be capable of being assigned to be on or off on a program-by-program basis.

4) Daily ET values can be accessed through the Internet.

g. WeatherTRAK OptiFlow XR Central Irrigation Management (CIM) Services:

1) Each WeatherTRAK OptiFlow XR irrigation controller installed on this project shall include Central Irrigation Management (CIM+OFS) service plan.

2) WeatherTRAK ET PRO3-C CIM service plan shall include:

a) Remote management and control from any computer able to access the internet.

b) Access to secure password-protection to web site 24-hours a day, seven

(7) days a week.

c) Easy-to-use interface with built-in help system to simplify training and programming.

d) Station-level programming for single or multiple controller views.

e) Program change simulations including field change notification and field synchronization with web site.

f) Alerts for electrical and programming issues.

g) Activity log and reporting.

h. Warranty and Technical Support shall include:

1) Controller enclosure assemblies shall include warranty and field technical support for a period of ten (10) years.

2) WeatherTRAK OptiFlow XR CIM+OFS-5YA wireless WeatherTRAK OptiFlow XR data service plan to combine with the one-year CIM service provided with purchase of controller for a combined total of ten

(10) years of WeatherTRAK OptiFlow XRCIM service.

3) Service Activation and service activation instruction for system startup.

6. All incidental parts which are not shown on the plans or specified herein and are necessary to complete the installation of weather-based irrigation controller(s) shall be furnished and installed as though such parts were shown on plans or specified. Weather based irrigation controller(s) shall be in satisfactory operation at the time of completion.

7. The irrigation controller enclosure assembly shall be equipped with a contractor installed 120 VAC duplex box with an On/Off switch, and 120 VAC GFI receptacles. The Contractor shall provide metal conduit run from the 120 VAC supply to the controller assembly. Electrical power within the housing shall be properly phased.

8.Upon final inspection of the project, the Irrigation Contractor shall provide for the County with a "Job Site Equipment Inspection and ten (10) year Warranty Certification" letter from the Irrigation Controller Enclosure Assembly manufacturer. This letter shall include verification of conformance with specifications and installation recommendations, and the site inspection date and shall list all assemblies covered under the ten (10) year warranty.

E. WeatherTRAK OptiFlow XR Controller Assembly Installation Certification:

1. The Contractor shall be responsible for obtaining the services of HydroPoint Data Systems and/or or approved HydroPoint authorized distributor to complete the Certification procedure for each WeatherTRAK OptiFlow Irrigation controller assembly. The Contractor shall be responsible for paying any costs involved for the Certification process.

2. HydroPoint Data Systems and/or approved HydroPoint authorized distributor can only certify WeatherTRAK OptiFlow XR irrigation controller assembly parts that were sold through HydroPoint Data Systems and/or approved HydroPoint authorized distributor.

For items outside of the Assembly Serial number there will be a certification charge to inspect these items. To inquire about what parts are covered under warranty and certification please

Chieng, Karen @Barnes, Erin R minor edits contact HydroPoint Data Systems and/or approved HydroPoint authorized distributor customer service.

3. The following information must be provided to start the certification process of the equipment and installation.

a. Assembly Model #:

b. Serial Number #:

c. Project:

d. Location:

e. Contractor:

f. Contact:

g. Phone:

4. The Contractor shall receive controller certification from HydroPoint Data Systems and/or approved HydroPoint authorized distributor service technicians for performing all of the following tasks in the certification process of the WeatherTRAK OptiFlow XR irrigation controller assembly.

a. The technician will verify that the enclosure is properly installed per manufacture’s specifications. Verify that the enclosure template is removed from the bottom of the enclosure or concrete pad. The technician will verify that the controller assembly is installed level and hardware is tightened.

b. Verify that the Master Valve wires are installed and connected to Master Valve terminal.

The technician will verify that the Master Valve operates electrically from the controller.

c. Verify permanent power source of 117 VAC and wires installed in conduit from the controller to the electrical meter.

d. Verify controller is properly grounded.

e. Verify flow sensor installed properly.

f. Verify flow sensing cable is installed in conduit from the sensor to the inside of enclosure.

g. Verify polarity connecting the flow sensor wires to the sensor cable wires: Red sensor wire to White cable wire; Black sensor wire to Black cable wire.

h. Verify splices at the valve box, from the Master valve wire to the cable and flow sensor wire to the cable, made with watertight connectors.

i. If there is a Pump Start Relay installed; the service technician will make sure the pump is wired to interface with the controller and operates with programs.

j. Verify the irrigation system water is pressurized and operational.

k. The service technician will calibrate the flow sensor with the controller by entering the flow sensor size installed in the field.

F. WeatherTRAK OptiFlow XR Controller Commissioning Services

1. The Contractor shall be responsible for obtaining the services of HydroPoint Data Systems and/or or approved HydroPoint authorized distributor to provide WeatherTRAK OptiFlow XR Controller Commissioning Services. The Contractor shall be responsible for paying any costs involved for the commissioning services. Commissioning services shall include:

a. Verification of account set-up.

b. Hardware validation to WeatherTRAK Central, including controller and station names.

c. Verification of software and SIM card; software updates,

d. Pre-activation/validation of controller communication.

e. Programming of controller including completion of programming worksheet; verification of master valve and flow sensor wiring.

f. Site Walk and inspection, with wet check, head count, flow rate estimation and verification.

g. Identification of water waste, landscape health, and equipment issues.

h. Mapping of valve stations, irrigation heads, quick couplers, controllers, main valves pin and an asset summary report using the controller’s software.

i. Training of controller, web and mobile apps

j. Controller Inspection Report.

2. Use WeatherTRAK part number WTS-CMSN-CTRL-2448 for WeatherTRAK OptiFlow XR Controller Commissioning Services for seven (7) 24 to 48 station controllers.

3. Use WeatherTRAK part number WTS-CMSN-CTRL-7296 for WeatherTRAK OptiFlow XR Controller Commissioning Services for one (1) 72 to 96 station controllers.

G. WeatherTRAK Flow Sensor Commissioning Services

1. The Contractor shall be responsible for obtaining the services of HydroPoint Data Systems and/or or approved HydroPoint authorized distributor to provide WeatherTRAK Flow Sensor Commissioning Services. The Contractor shall be responsible for paying any costs involved for the commissioning services. Commissioning services shall include:

a. Hardware and flow validation to WeatherTRAK Central.

b.Verification of software and SIM card; software updates and learning flow for calibration.

c. Verifying and updating flow settings in controller.

d. Controller Inspection Report on flow.

2. Use WeatherTRAK part number WTS-CMSN-FLOW-2448 for WeatherTRAK Flow Sensor Commissioning Services for seven (7) 24 to 48 station controllers.

3. Use WeatherTRAK part number WTS-CMSN-FLOW-7296 for WeatherTRAK Flow.

Sensor Commissioning Services for one (1) 72 to 96 station controllers.

H. WeatherTRAK OptiFlow Site Optimization Commissioning Services

1. The Contractor shall be responsible for obtaining the services of HydroPoint Data Systems and/or or approved HydroPoint authorized distributor to provide WeatherTRAK OptiFlow Site Optimization services. The Contractor shall be responsible for paying any costs involved for the commissioning services. Commissioning services shall include:

a. Review and verification of compatibility, controller status, valid flow rates, and station programming.

b. Configuration of site for flow optimization.

c.Verification of optimized flow for each controller. Requires remote access.

2. Use WeatherTRAK part number WTS-OPT-OPTIFLOW for WeatherTRAK OptiFlow Site Optimization Commissioning Services for eight (8) controllers.

I. Electric Control Valve:

1. Existing electric control valve installation shall be upgraded in accordance with rules, regulations and identifications for use with recycled water. Refer to irrigation drawings for additional recycled water upgrade.

J. Valve Box:

1. Valve boxes shall be black in color for irrigation systems carrying potable water.

2. Valve boxes shall be purple in color for irrigation systems carrying recycled water.

3. Use ten-inch by ten and one-quarter inch (10" x 10-1/4") round box for all gate valves, Carson Industries #910-12B with bolt-down cover or approved equal. Extension sleeve shall be PVC with minimum size of six inches (6”).

4. Use nine and one-half inch by sixteen-inch by eleven-inch (9-1/2" x 16" x 11") rectangular box, or a ‘large style’ (14” x 19” x12”) jumbo rectangular box for all electric control valves and ball valves, Carson Industries #1419- 12B or #14191040 with bolt-down cover or approved equal. The size of each replacement box shall be determined based on the dimensions of the existing box at the corresponding valve location.”

5. Use ten-inch (10") diameter x ten and one-quarter inch (10-1/4") deep round plastic valve box for all quick coupling valves, Carson Industries #910-12B with bolt-down cover or approved equal.

K. Identification Tag:

1. I.D. tags for electric control valves shall be manufactured from Polyurethane Behr Desopan. Use Christy's standard tag hot-stamped with black letters on yellow background. Tags for electric control valves shall be numbered to match programming shown on the Drawings. Provide one (1) tag for each electric control valve.

2. Recycled water I.D. tags for electric control valves, quick coupling valves and any other valves requiring recycled water identification shall be manufactured from Polyurethane Behr Desopan. Use Christy's maxi tag, hot-stamped with black letters on purple background. Tags shall read "Warning - Unsafe Water - Do Not Drink." Tag shall be printed in English on one side and Spanish on the other

3. Special order tags from T. Christy Enterprises, 655 East Ball Road, Anaheim, CA 92805. Phone

(714) 507-3300 and Fax (714) 507-3310.

L. Miscellaneous Irrigation Equipment:

1. Refer to the Drawings for sizes and types of miscellaneous irrigation equipment.

2. Miscellaneous irrigation equipment shall be as specified or approved equal.

PART 3 - EXECUTION REQUIREMENTS

3.1 GENERAL INSTALLATION REQUIREMENTS

A. Before work commences, schedule a kick-off job meeting with County, General Contractor, and Irrigation Consultant to discuss general details of the work.

B. Verify dimensions and grades at jobsite before work is commenced.

C. During the progress of the work, a competent superintendent and any assistants necessary shall be on site, all satisfactory to County. The superintendent shall not be changed, except with consent of County, unless that person proves unsatisfactory and ceases to be employed. The superintendent shall represent the Contractor in its absence and all directions given to the superintendent shall be as binding as if given to Contractor.

D. Work indicated or noted on Drawings shall be provided whether or not specifically mentioned in the Specifications.

E. If there are ambiguities between Drawings and Specifications, and specific interpretation or clarification is not issued prior to bidding, the interpretation or clarification will be made only by County, and Contractor shall comply with the decisions. In the event the installation contradicts the directions given, the installation shall be corrected by Contractor at no additional cost to County.

F. Layout of irrigation equipment shown on Drawings is diagrammatic. Location of irrigation equipment is contingent upon and subject to integration with all other underground utilities. Contractor shall employ all data contained in the Contract Documents and shall verify this information at the job site to confirm the manner by which it relates to the installation.

G. Coordinate the installation of all irrigation materials, including pipe, with the landscape Drawings to avoid conflict with the trees, shrubs, or other planting material.

H. Do not proceed with the installation of the irrigation system when it is apparent that obstructions or grade differences exist or if conflicts in drawing details, legend, or specific notes are discovered. All such obstructions, conflicts, or discrepancies shall be brought to the attention of County’s Authorized Representative.

I. Replace, or repair to the satisfaction of County, all existing paving disturbed during the course of this work. New paving shall be the same type, strength, texture, finish, and be equal in every way to the material removed.

J. County reserves the right to make temporary repairs as necessary to keep equipment in operating condition without voiding Contractor's guarantee or relieving Contractor of its responsibilities during the guarantee shall not be allowed.

K. Coordinate the installation of all irrigation materials, including pipe, with the landscape Drawings to avoid conflict with the trees or other planting.

3.2 OBSERVATION OF SITE CONDITIONS

A. Scaled dimensions are approximate. The Contractor shall check and verify all size dimensions and receive approval from the County's Authorized Representative prior to proceeding with work under this Section.

B. Exercise extreme care in excavating and working near existing utilities. The Contractor shall be responsible for damages to utilities, which are caused by his operations or neglect. Check existing utilities drawings for existing utility locations.

C. Coordinate installation of irrigation materials including pipe, so there shall be NO interference with utilities or other construction projects or difficulty in planting trees, shrubs, and ground covers.

D. The Contractor shall carefully check all grades to satisfy itself that he may safely proceed before starting work on the irrigation system. Any discrepancies between the drawings and actual site conditions shall be brought to the attention of the County prior to proceeding with the work.

3.3 PREPARATION

A. Water Supply:

1. The irrigation system shall be connected to water supply point(s) of connection as indicated on the Drawings.

2. Connections shall be made at the approximate location(s) shown on the Drawings. The Contractor is responsible for minor changes caused by actual site conditions.

B. Electrical Supply:

1. Electrical connections for any and all irrigation controllers shall be made to electrical point(s) of connection as indicated on the Drawings.

2. Connections shall be made at the approximate location(s) shown on the Drawings. The Contractor is responsible for minor changes caused by actual site conditions.

3.4 INSTALLATION

A. Backfilling:

1. Excavations shall not be backfilled until all required tests are performed. Trenches shall be carefully backfilled with the excavated materials approved for backfilling, consisting of earth, loam, sandy clay, sand, or other approved materials, free from large clods of earth or stones. Backfill shall be mechanically compacted in landscaped areas to a dry density equal to adjacent undisturbed soil in planting areas. Backfill will conform to adjacent grades without dips, sunken areas, humps or other surface irregularities.

2. A fine granular material backfill will be initially placed on all excavations. No foreign matter larger than one-half inch (1/2”) in size will be permitted in the initial backfill.

3. Flooding of trenches will be permitted only with approval of the County's Authorized Representative.

4. If settlement occurs and necessitates adjustments in pipe, valves, heads, lawn, plantings, or other installed work, the Contractor shall make all required adjustments without cost to the County.

B. Assemblies:

1. Routing of irrigation equipment as indicated on the Drawings is diagrammatic. Install lines (and various assemblies) in such a manner as to conform to the details per the Drawings.

2. Install NO multiple assemblies in plastic lines. Provide each assembly with its own outlet.

3.Install all assemblies specified herein in accordance with respective details. In absence of detailed drawings or Specifications pertaining to specific items required to complete work, perform such work in accordance with best standard practice with prior approval of County's Authorized Representative.

4. PVC pipe and fittings shall be thoroughly cleaned of dirt, dust, and moisture before installation.

C. Irrigation Controller Replacement upgrade:

1. Install Irrigation Controller Enclosure Assembly per drawings and per manufacturer's instructions and recommendations. Electric control valves shall be connected to the controller in numerical sequence as shown on the Drawings.

2. Final location of irrigation controller enclosure assemblies shall be approved by the County’s Authorized Representative prior to installation.

D. High Voltage Wiring for Automatic Controller:

1. Unless otherwise noted on the Drawings, the 117 VAC electrical power to each irrigation controller location is to be furnished by others. The final electrical hook-up shall be the responsibility of the Contractor.

2. Electrical work shall conform to local codes, ordinances, and union authorities having jurisdiction.

E. Grounding:

1. Automatic controllers and other devices requiring grounding shall be grounded in accordance with the manufacturer’s installation guide.

2. Grounding rod(s) shall be a 5/8" x 8' long copper clad rod. It is anticipated that only one

(1) Rod will be required to ground each device. When tested, grounding grid shall have an earth resistance no greater than 15 ohms. If earth resistance is greater than 15 ohms, additional grounding rods shall be added to grid until desired test results are met.

3. Run #6 or larger solid bare copper wire from device to the copper rod. Keep ground wire as short and straight as possible from device to first copper rod. When two or more grounding rods are required, install rods 8 feet apart and connect rods together using #10 solid bare copper wire.

4. All wires shall be clamped to grounding rod(s). Do not solder or tape wires to grounding rod(s). Use separate clamp to attach each wire to a rod.

F. Certified Weather TRAK OptiFlow XR irrigation controller Installer:

1. The Contractor and on-site field superintendent shall each be certified under the “HydroPoint Certified Installer Program” prior to installation WeatherTRAK OptiFlow XR irrigation controller specified to be installed under these specifications.

2. The HydroPoint WeatherTRAK OptiFlow XR irrigation controller weather-based irrigation controller shall include all of the controller commissioning services listed in Part 2 of these specifications.

G. Electric Control Valves:

1. Existing electric control valve installation shall be upgraded in accordance with rules, regulations and identifications for use with recycled water. Refer to irrigation drawings for additional recycled water upgrade.

2. Provide recycled water tags and identification tags to all electric control valves. Electric control valves shall be connected to the controller in numerical sequence as shown on the Drawings.

3. Each valve program and number shall be heat branded on valve box cover with one and one-half inch (1½") tall letters. Master valve box covers shall be heat branded with the controller assignment.

3.5 TEMPORARY REPAIRS

A. The County reserves the right to make temporary repairs as necessary to keep the irrigation system equipment in operating condition. The exercise of this right by the County shall not relieve the Contractor of his responsibilities under the terms of the guarantee as specified herein.

3.6 CLEAN-UP

A. Clean up shall be done as each portion of work progresses. Refuse and excess dirt shall be removed from the site, all walks and paving shall be broomed or washed down, and any damage occurring to the work of others shall be repaired to original conditions.

3.7 FINAL SITE OBSERVATION PRIOR TO ACCEPTANCE

A. The Contractor shall operate each system in its entirety for the County's Authorized Representative at the time of final observation. Any items deemed unacceptable by the County's Authorized Representative shall be reworked to the complete satisfaction of the County's Authorized Representative.

B. The Contractor shall show evidence to the County's Authorized Representative that the County has received all accessories, charts, record drawings, and equipment as required before final site observation can occur.

3.8 SITE OBSERVATION SCHEDULE

A. The Contractor shall be responsible for notifying the County's Authorized Representative in advance for the following observation meetings, according to the time indicated:

1. Pre-Job Conference – seven (7) days

2. Irrigation controller installation - 48 hours

3. Irrigation controller activation and scheduling - 48 hours

4. Point of connection installation – 48 hours

5. Master Valve and flow sensor installation – 48 hours

6. Flow sensor conduit and cable installation – 48 hours

7.. Final site observation – seven (7) days

B. When site observations have been conducted by a party other than the County's Authorized Representative, show evidence in writing of when and by whom these observations were made.

C. Prior to walking the irrigation system with the County’s Authorized Representative, the Contractor shall pre-walk irrigation system with its own crew to ensure compliance with plans and specifications. The Contractor shall observe those items shown on the observation check list below and initial and date that all items observed are in accordance with plans and specifications. This list shall be presented to the County’s

Authorized Representative prior to the final irrigation walkthrough with the County’s Authorized Representative.