Integrity Innovation Accountability Commitment to Excellence Teamwork Values Item 4G Ordinance No. 662-C; Revise the City of Southlake’s Drought Contingency Plan

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Potential Problems High demands –pumping capacity reaches it limits. –water customers demand > pumping capability – probability of emptying EST tanks –pressure drop in the city’s water system. State regulations, –Pressure drop < 20 pounds psi –Mandatory Issuance of “Boil Water Notice”. need to build “Local Triggers” into Drought Contingency Plan

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning State adopted regulations State adopted regulations –water systems > 3,300 connection –adopt Water Conservation and Drought Contingency Plans (DCP) Wholesale purchase from Ft. WorthWholesale purchase from Ft. Worth –Contract terms - require wholesale customers Drought Contingency Plan –At minimum, restrictive as the City of Ft. Worth’s DCP

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Southlake’s Drought Contingency PlanSouthlake’s Drought Contingency Plan –adopted in August, 1996 –Revised in January, 2006 (Ord. 622-B) –mirrors the Ft. Worth plan “triggers” or conditions which warrant the various stages of conservation measures to take effect“triggers” or conditions which warrant the various stages of conservation measures to take effect –all refer to Ft. Worth’s treatment capacity and –the Tarrant Regional Water Districts reservoir capacity

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Current DC PlanCurrent DC Plan –does not address specific local water system limitations –limit our ability to meet peak demands Causes:Causes: –Heavy demand –Peak demand – Early a.m. –Drought conditions

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Drought Contingency Planning The two limiting factors in our water systems are the pumping capacity and the elevated storage tank capacityThe two limiting factors in our water systems are the pumping capacity and the elevated storage tank capacity

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Drought Contingency Planning This chart of elevated storage tank levels shows the diurnal water demand for a 4 day period in August 2006This chart of elevated storage tank levels shows the diurnal water demand for a 4 day period in August 2006

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Must maintain sufficient levels of water in the elevated storage tanksMust maintain sufficient levels of water in the elevated storage tanks – fire protection and domestic use, Therefore,Therefore, –Necessary to limit outdoor irrigation –when local water demand causes tower levels to reach critical levels

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Current and Proposed Stages Stage 1 – Dry Conditions Stage 2 – Water Watch Stage 3 – Water Warning Stage 4 – Emergency Water Management

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Stage 1 – Dry ConditionsStage 1 – Dry Conditions –Normal conservation measures on a voluntary basis –Voluntary lawn and golf course fairway irrigation recommended once every 5 days with no watering allowed between 10 a.m. and 6 p.m.irrigation recommended once every 5 days with no watering allowed between 10 a.m. and 6 p.m.

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Stage 2 – Water WatchStage 2 – Water Watch –Trigger: –Trigger: Water level in 3 elevated storage tanks falls below 18’ for three consecutive days with the Pearson pump station operating at 100% capacity –Mandatory - Landscape irrigation restricted to once every 5 days –Mandatory - No hosing off of pavement, buildings or windows –Mandatory - Vehicle washing restricted to commercial facilities only »Use of water from Fire Hydrants restricted to fire fighting and uses necessary to maintain public health, safety and welfare

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Stage 3 – Water WarningStage 3 – Water Warning –Trigger: ith the Stage 2 restrictions in place for at least 2 weeks, the water level in 3 elevated storage tanks fall below 18’ for three consecutive days with the Pearson pump station operating at 100% capacity –Trigger: With the Stage 2 restrictions in place for at least 2 weeks, the water level in 3 elevated storage tanks fall below 18’ for three consecutive days with the Pearson pump station operating at 100% capacity All Stage 2 restrictions plus the following restrictions apply: –Mandatory - No operation of ornamental fountains –Mandatory - No draining, filling, refilling or adding water to pools or jacuzzi type pools –Mandatory - No foundation watering except by hand held hose and only then on the 5 day watering cycle –Mandatory - Any action allowing water to run onto pavement or otherwise wasting water

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Stage 4 – Emergency Water Use ManagementStage 4 – Emergency Water Use Management –Triggers: –With the Stage 3 restrictions in place for at least 2 weeks water level in 3 elevated storage tanks fall below 12’ for three consecutive days with the Pearson pump station operating at 100% capacity and/or – malfunction or breakdown of a water system component (pump, storage tank, or supply line) which severely limits the City’s ability to provide water and/or – At the discretion of the Director of Public Works 12’

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Stage 4 – Emergency Water Use ManagementStage 4 – Emergency Water Use Management All Stage 2 and 3 restrictions plus the following restrictions apply: –NO IRRIGATION –No installation of new landscaping 12’

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Last Digit of Address Days of the Month Watering is Allowed O or 55 th, 10 th, 15 th, 20 th, 25 th, and 30 th 1 or 61 st, 6 th, 11 th, 16 th, 21 st, and 26 th 2 or 72 nd, 7 th, 12 th, 17 th, 22 nd, and 27 th 3 or 83 rd, 8 th, 13 th, 18 th, 23 rd, and 28 th 4 or 94 th, 9 th, 14 th, 19 th, 24 th, and 29 th

Integrity Innovation Accountability Commitment to Excellence Teamwork Values SUMMARY Required by State Required by Fort Worth Addition of Local Triggers –High Demand caused –Equipment Malfunction No Action = Potential Increase of Water outage

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Changes Hypothetical- –Proposed Ordinance –In effect last Summer –Stage 2 Trigger – July 14, 2006 –Remained in effect until 9/30/06 Proposed Ordinance Language –If conditions warrant, stand-down from Stages 2, 3 or 4 is available to DPW

Integrity Innovation Accountability Commitment to Excellence Teamwork Values Water Conservation and Drought Contingency Planning Questions? Contact Bob Price (817)