WSP06093 - Laserfiche WebLink

Home Browse Search

include a butterfly valve at the end of each lateral. These valves are for iso- 1ation and are not to be used for throttling purposes. It should be noted that lateral 716 has some additional isolation but- terfly valves which were installed by the contractor for testing purposes. c. Conveyance Channel The normal canal operation will be to maintain normal water surface at all the gate-check and water control structures in the system. Installation of stop logs in certain road crossing structures may be necessary to maintain suf- ficient water depth to protect the lining when operating tile project at very low yields. It is necessary to maintain near normal water surface at check struc- tures at all times to protect lining. In addition, large rapid water surface changes must be minimized as sloughing may occur to the canal lining cover material. These factors become critical during power outages and project shut- down. Generators will be usea to power selected wells to maintain the water levels in the canal as required when power outages occur. During project shutdowns, a minimum flow will be maintained through the canal system. This flow will enter at various laterals along the canal beginning upstream of the check structure at County Road G in Stage 4 and pass through the system to maintain water levels. This minimum flow is necessary to make up for losses and check structures leakage in the 42-mi1e canal system. d. Observa ti on We 11 s r ""' ~... "/ .' ;... ....... .... ...... '1'~-..) Normally, the observation well data will be analyzed on a quarterly basis by the ground water hydrologist. However, during adverse conditions anal- yses will be performed more frequently. The ground water model will be run at 13