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<br />-2- <br /> <br />""-~"".ll~'''' <br />I. <br />Ijh - If <br />'.' -f5:~;']' <br />~:~ ~'~z.tj <br /> <br />;.;i"- <br />'I <br /> <br />1 <br />-i, <br /> <br />'1 <br />1= <br /> <br />-'"'! <br />ill <br /> <br />'~lji I <br /> <br /> <br />the problem was due to defective manufacture of the filters. The dual <br />18 inch sand filters, upon being placed in service, began to throw fine <br />sand particles forward into the final filter. It \'J3S found that the <br />larger filter media had not been properly cemented in place. Repair to <br />the filters was delayed until after the irrigation season because the <br />repair time would interrupt the irrigation schedule. During the interim <br />an addition of coarse sand was found to reduce the problem. <br /> <br />II. The Emitter System <br /> <br /> <br />, <br />:1 <br /> <br />1703 <br />