Overview of Discussion What are the pros and cons of the options? Are there other options? A2 SUBCOMMITTEE
Overview of Options 1. +/- 6% msmt. accuracy by volume or flow rate (consistent with CVP contractors’ requirement) at individual customer 2. +/- 15% msmt. accuracy by volume or flow rate at individual customer 3. Combination of measurement at laterals, and/or at individual customers 4. Measurement at basin level or supplier level, with estimation for individual customers 5. Others? A2 SUBCOMMITTEE
Option 1: +/- 6% msmt. accuracy by volume or flow rate Can this meet requirements of section (b) Annual report of aggregated farm-gate delivery Implement pricing structure at least in part volumetric What are pros/cons of this option, such as: Kinds of devices that can provide this accuracy Appropriate maintenance, checks, calibration Typical range of installation cost Other considerations A2 SUBCOMMITTEE
Option 2: +/- 15% msmt. accuracy by volume or flow rate Can this meet requirements of section (b) Annual report of aggregated farm-gate delivery Implement pricing structure at least in part volumetric What are pros/cons of this option, such as: Kinds of devices that can provide this accuracy Appropriate maintenance, checks, calibration Typical range of installation cost Other considerations A2 SUBCOMMITTEE
Option 3: Lateral-level Measurement Can this meet requirements of section (b) Annual report of aggregated farm-gate delivery Implement pricing structure at least in part volumetric What are pros/cons of this option, such as: Kinds of devices that can provide this accuracy Appropriate maintenance, checks, calibration Typical range of installation cost Other considerations A2 SUBCOMMITTEE
Option 4: Supplier-level Measurement Can this meet requirements of section (b) Annual report of aggregated farm-gate delivery Implement pricing structure at least in part volumetric What are pros/cons of this option, such as: Kinds of devices that can provide this accuracy Appropriate maintenance, checks, calibration Typical range of installation cost Other considerations A2 SUBCOMMITTEE
Option X: Other Option? Can this meet requirements of section (b) Annual report of aggregated farm-gate delivery Implement pricing structure at least in part volumetric What are pros/cons of this option, such as: Kinds of devices that can provide this accuracy Appropriate maintenance, checks, calibration Typical range of installation cost Other considerations A2 SUBCOMMITTEE
Revisiting Questions to Consider What are the details to define a standard? Is defining an accuracy standard as a +/- percentage appropriate? Should the definition include additional details (e.g. operating flow range, field conditions, etc.)? Should open-channel and piped delivery systems have different accuracy standards? How should the “irrigation season” be defined for an agricultural water supplier? A2 SUBCOMMITTEE
Compliance, Applicability, and Exceptions How does a supplier comply? Initial compliance of installed devices On-going compliance – sampling program or all devices during defined period of years o Compliance = every device compliant? o Compliance = xx% of devices compliant? o Demonstrate plan to fix non-compliant devices? Reporting of devices’ accuracy Must every delivery point be measured regardless of size? What is a reasonable program for maintenance, checks, and calibration of measurement devices? Other exceptions (e.g., parcel size)?