Agmt21 West Yost & Associates, Inc

Browse Search

REV: 10-05-21 RL Once the potable water meter is secured and shutoff, the Specialist will depressurize the system to at least 30 percent of recycled water line pressure The Specialist will allow the recorders to run for a minimum of two hours (or as approved by the City) At the end of the shutdown test, the Specialist shall re-establish domestic (potable) line pressure while the digital pressure recorders are running to obtain the final pressure spike before completing the potable phase shutdown test and beginning the recycled water phase of the shutdown test Recycled Water Pressure Cross Connection Shutdown Test A Specialist shall conduct the recycled water cross-connection shutdown test as follows: On all recycled water meters, the Specialist will install digital pressure recorders on all reduced pressure principal backflow prevention assemblies or at a quick coupler valve The Specialist shall verify that the recorders are operating properly and allowed to track under full pressure for at least 10 minutes before isolating and depressurizing the system Once the recycled water meter is secured and shut off, the Specialist will depressurize the system to at least 30 percent of the potable line pressure The Specialist will allow the digital pressure recorders to run for a minimum of two hours (or as approved by the City) with the potable water system fully pressurized At the end of the shutdown test, the Specialist shall re-establish irrigation (recycled) line pressure while the digital pressure recorders are running to obtain the final pressure spike before completing the shutdown test Specialist shall submit electronically in PDF format to the City cross-connection tests results charts within two days of the cross-connection test. Task 5 - Perform or represent the City during standard cross connection tests If directed by the Recycled Water Superintendent or their designee, a Specialist shall conduct or represent the City during a standard cross-connection shutdown test. Specialist shall either perform or ensure the following items are performed: The pressurization of the potable water system and de-pressurization of the irrigation water system The flow verification from the potable water outlets and the absence of flow from the irrigation water system outlets The pressurization of the irrigation water system and de-pressurization of the potable water system The flow verification from the irrigation water outlets and the absence of flow from the potable water system outlets Completion of a cross-connection test form If Specialist represents the City during the test, Specialist shall review the customer’s cross-connection test form for accuracy and completeness and then submit it electronically in PDF format to the City within one day from receipt of the form. ATTY/AGR.2021.253/West Yost & Associates, Inc. (Page 14 of 18)