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Client Name: City of Santa Ana I AMI FEASIBILITY REPORT <br />Table 6 3/4 Inch Meter Test Results <br />Master <br />2 <br />0 <br />0% <br />Neptune <br />39 <br />4 <br />10% <br />Hersey <br />35 <br />15 <br />43% <br />Total <br />76 <br />19 <br />25% <br />1,790 <br />1,291 <br />468 <br />4.3.1.3 1" Meters <br />Most of the meters in this group size are recorded as Rockwell meters. The majority of the 1 -inch <br />meters appear to have low -flow test accuracy lower than the recommended values for in-service <br />meters. In fact only one Rockwell meter out of the total number tested met the low -flow accuracy <br />values and intermediate values were lower than would normally be expected. Rockwell meters <br />need to be replaced. None of the over 900 Master meters were tested and it must be noted that <br />these meters have performed poorly in most other size test results. <br />Table 71 Inch Meter Test Results <br />f®®1 No. Meters <br />.. <br />Neptune 1 0 0% 501 <br />Rockwell - -38 - x.37 --,97% 939- - --- - - <br />Total 39 37 95% <br />4.3.1.4 11/2" Meters <br />The 11/2 -inch meters appear to have stable low -flow characteristics and the vast majority of <br />meters are about the lower range of 90% accuracy. However, the high range accuracy is the major <br />consideration with a number of tests falling outside of the 101.5% top range for this meter size. <br />Approximately 40% of the meters fail in the high accuracy range. Therefore it is recommended that <br />all the 1.5 -inch meters are changed out. <br />BLACK & VEATCH I Current Metering Platform <br />25G-131 <br />13 <br />