Specific Requirements

8.4.3.1 Connections to Existing Mesa Water® Facilities

The Applicant shall not make a connection to existing Mesa Water® facilities or interrupt Recycled Water Service in any portion of Mesa Water® unless it has been approved by Mesa Water®. If it becomes necessary to interrupt service to an existing system, this interruption shall be done at a time determined by Mesa Water®, under Mesa Water's direction and inspection.

8.4.3.2 Inspection Authority

Mesa Water®, those authorized by Mesa Water®, and various Appropriate Regulatory Agencies shall at all times have access to all the onsite work during construction, and shall be provided with such information as it may desire regarding location of facilities, the progress, workmanship and character of materials used in the work.

Mesa Water® shall have the authority to notify the Customer of an apparent failure on the part of the Contractor to carry out orders given or to perform any provisions of the approved plans or specifications. Upon its confirmation of the apparent failure, the Customer shall be obligated to require the Contractor to suspend the work wholly or in part. The Contractor shall immediately comply with the written order of Mesa Water® to suspend the work wholly or in part. Dependent on the nature of the non-compliance, it may require immediate action by the contractor via verbal order with a written order following. The work shall be resumed when methods or defective work are corrected as ordered and approved in writing by Mesa Water®. Failure to comply with requests of

Mesa Water® will prevent further work, may result in termination of all Potable Water and Recycled Water, and may prevent or delay the final release of the entire project. 8.4.4 Material of Construction

The following information briefly outlines the materials of construction that will be approved by, Mesa Water® and other appropriate Regulating Agencies prior to the

commencing of any construction. Refer to Mesa Water’s Standard Specifications for a complete list of requirements for Materials of Construction.

8.4.4.1 Valves

Quick coupling valves may be required to be removed if they are used in a manner contrary Mesa Water’s Rules and Regulations or are located in an area that encourages unauthorized use. The manner of removal shall be subject to approval by Mesa Water®.

Quick coupling valves shall conform to the following:

Rating – Quick coupling valves for Recycled Water shall be ¾ inch or one inch nominal size with brass construction, acme thread body and key, and a normal working pressure of 125 psi. All quick coupling valves for Recycled Water shall be of a design that prevents the quick coupler key (spike) from being used in potable water or Non-potable Water quick couplers..

Key – All quick coupling valves shall be operated with a special coupler key with an Acme thread for opening and closing the valve. This provision may be modified by Mesa Water® in those cases where an existing Onsite Potable Water System is currently equipped with quick coupling valves that are operated with an Acme threaded key. Identification – All quick coupling valves shall be tagged to for identification. All tagging shall be to the satisfaction of Mesa Water® and Appropriate Regulatory Agencies.

Cover – The cover shall be permanently attached to the quick coupling valve. It shall be purple in color and made of rubber or vinyl with the following information stamped or molded on the cover: “Recycled Water” in English and Spanish; “Do Not Drink” in English and Spanish; or the international “Do Not Drink” symbol (a glass of water in a circle with a slash through it); and a locking cover.

All Recycled Water valves shall be in serviceable condition and free from leaks and structural faults. All underground gate valves three inches and smaller may be furnished with either operating nuts or handwheels.

8.4.4.2 Valve Boxes

All new valve boxes (gate valves, manual control valves or electrical control valves) on the recycled water irrigation system shall be purple (Pantone 512) and have the words “Recycled Water” in white letters on top.

8.4.4.3 Piping

All new buried onsite constant pressure Recycled Water irrigation piping shall be marked as follows: PVC Pipe must be purple-colored PVC pipe with continuous wording “Caution – Recycled Water – Do Not Drink” printed on opposite sides of the pipe. The use of continuous lettering on 3 inch minimum width of purple tape with 1 inch black or white contrasting lettering bearing the continuous wording “Caution – Recycled Water – Do Not Drink” permanently affixed at 5 foot intervals atop all horizontal piping, laterals and Mains is an acceptable alternative to purple pipe.

All new Recycled Water piping above ground or in vaults, including adapters and fittings, shall be painted purple in color (Color Code Pantone 512). Black or white stenciling shall appear on both sides of the pipe with the marking “Caution – Recycled Water” in 5/8 inch letters repeated every 3 feet.

8.4.4.4 Storage Tanks

All storage tanks used for Recycled Water, whether fixed or mounted on distribution vehicles, shall be structurally sound and free from leaks.

8.4.5 Construction Notification

The Applicant shall give Mesa Water® at least two business days (48 hours) notice before starting the Onsite Recycled Water System construction work.