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To date there are 24 sites installed with a couple left to calibrate. Sites that are in progress <br />total 5, including 1 base unit, 1 well, 2 gate control and 1 surface site. In total we have 8 <br />wells, 3 gate control sites operating 6 gates, 12 surface water sites, and 3 repeater sites for <br />a total of 29 sites. <br />Attempts to enable polling of field units by multiple entities have come up against <br />multiple constraints. To alleviate this problem, project participants have set up a data <br />retrieval system to handle data collection exclusively through the SPDC base unit and put <br />on a designated hard drive of the SPDC office computer. SPDC then set up a ftp site that <br />can be accessed the DWR, company stockholders, and other interested parties. A <br />username and password is required to access the data on the ftp site. This has worked out <br />much better since access to the ftp site and all the data can be gained from anywhere you <br />have an internet connection. <br />For control functions and daily operational monitoring tasks, a second radio frequency <br />will be employed along with a second radio /control unit to be installed at the SPDC base. <br />The data collection base radio /control unit will control all direct communications with <br />field sites. The most recently acquired data from field units along with a field -site <br />generated time stamp will be passed to the secondary (or control and daily operations) <br />radio /control base. Remotely entered control set point adjustments will either be entered <br />directly into the secondary base, or radio transmitted to the secondary base from the <br />mobile ditch rider unit, then passed from the secondary base to the primary base for <br />transmission to field sites. <br />Similarly, alarm conditions detected by field units will read as part of the data polling <br />process by the primary base. Alarms will then be passed to the secondary base. As alarm <br />conditions are detected, the secondary unit can directly pass alarm information to mobile <br />ditch rider units. A third -party alarm system linked to digital output ports of the <br />secondary base unit will also be able to send out alarm messages by phone or by voice or <br />pager radio systems. <br />As we complete each task we have a better understanding of what this equipment is <br />capable of doing. In an effort to maintain constant flows from the river diversion to our <br />main flume, we are automating the Obermeyer pneumatic gates in the river diversion and <br />our canal. This will allow for consistent flows during times of river fluctuations. During <br />the low flow of the river it is giving us a chance to install inclinometers or gate position <br />indicators on the gates. The RTU, gate relays, air bubbler and solar charger will then be <br />hooked up. The gates at the river diversion will poll water flows from the main flume <br />and either raise or lower gates in the canal or the river stream to maintain target flows at <br />the main flume. Development of this program code will require substantial amounts of <br />time. The process for calibration and debugging will probably be an even larger time <br />commitment. <br />18 <br />