08/29/2007 Env Bd Packet - Laserfiche WebLink

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• • • Demand Reduction Potential. The demand reduction potential for residential use will typically be the base demand during the winter months when water use for dal uses such as lawn watering do not occur. The cfrfference between summer and winter demands typically defines the demand reduction that can be achieved by eliminating non al uses In extreme emergency situations lower priority water uses must be restricted or eliminated to protect first priority domestic water requirements. Shorter demand reduction potential should be based on average day demands for customer categories within each priority class. Triggers for Allocation and Demand Reduction Actions. Triggering levels must be defined for implementing emergency responses, including supply augmentation, demand reduction, and water allocation. Examples of triggers include: water demand >100% of storage, water level in well(s) below a certain elevation, treatment capacity reduced 10% etc. Each trigger should have a quantifiable indicator and actions can have multiple stages such as mild, moderate and severe responses. Check each trigger below that is used for implementing emergency responses and for each trigger indicate the actions to be taken at various levels or stages of severity in Table 9. ❑❑❑❑ ® ®® Water Demand Treatment Capacity Storage Capacity Groundwater Levels Surface Water Flows or Levels Pump, Booster Station or Well Out of Service Governor's Executive Order — Critical Water Deficiency (required by statute) Water Main Break - Loss of Production Security Breach Contamination Other (list in Table 9) Table 9 Demand Reduction Procedures ondition Trigging) .. Actions . - ,..- - tage : =_:: : " =. May 15th to September 15 Alternate day (odd/even) sprinkling restriction sprinkling restriction 10:00 am to 6:00 pm voderate) * May 15th to September 15 Alternate day (odd/even) sprinkling restriction sprinkling restriction 10:00 am to 6:00 pm Stage' 3 ; ; Severe) ' . ". Peak use exceeds total well supply capacity. Water storage unable to recover within 24 hours Total ban on lawn watering and other non - essential uses. Critical Water 13efieienck - . 4391) : Executive Order by Governor & as provided in above triggers Stage 1: Restrict lawn watering, vehicle wishing, golf course and park irrigation and other nonessential uses Stage 2: Suspend lawn watering, vehicle washing, golf course and park irrigation and other nonessential uses Note: The potential for water availability problems daring the on of a drought are almost impossible to predict. Significant increases in demand should be balanced with preventative measures to conserve supplies in the event of prolonged drought conditions. 90:00 AM to 6.:00 PM Ordinance to limit sprinkling to follow. 11