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Item 6BCITY OF SOUTH LAKE MEMORANDUM (April 21, 2009) To: Shana Yelverton, City Manager From: Robert H. Price, P.E., Public Works Director Subject: Ordinance No. 895 -B; 2" Reading, Revise the Water Conservation Plan. PUBLIC HEARING Action Requested: Adopt Ordinance No. 895 -13; 2 nd reading, Revise the Water Conservation Plan. Background Information: In 2005, the Texas Commission on Environmental Quality (TCEQ) amended Title 30, Texas Administrative Code, Chapter 288. The revised Chapter 288 requires that public water suppliers serving 3,300 or more customers submit a revised current water conservation plan to TCEQ in May 2009 and re- submit every five (5) years thereafter. The City of Southlake has revised the water conservation ordinance twice since 2005 to conform with changes to the City of Ft. Worth's regulations. The most recent change to the plan made the 10:00 a.m. to 6:00 p.m. irrigation restriction year -round rather than just the summer months. The proposed water conservation plan updates the City of Southlake's Utility System Profile and proposes five and ten - year water conservation goals which conform with the regional goals of 190 and 180 gallons per capita per day respectively. It also describes water conservation best management practices (BMPs) intended to achieve the conservation goals. Those BMPs include efforts to accurately account for the City's water use, detect and repair leaks, and encourage the efficient use of water by our customers. Efforts to improve accountability include: improving the accuracy of the billing meters from the City of Ft. Worth, retail meter testing and replacement programs, and routine water audits to measure water system losses. Public education efforts regarding efficient water use along with a non - promotional rate structure are proposed to discourage wasting of water. The plan also proposes using the City's computerized water system monitoring capabilities to assist with leak detection. Financial Considerations: None Strategic Link: The adoption of the Water Conservation Plan links to the city's strategy map relative to the focus area providing high quality customer service. Effective management of the City's water resources will insure our ability to sustain high quality customer service in the delivery a safe and adequate supply of drinking water. Citizen Input/ Board Review: None Legal Review: None Alternatives: The City Council may approve or reject the revisions to the water conservation plan. Supporting Documents: Ordinance 895 -B including Attachment "A" Staff Recommendation: Adopt Ordinance No. 895 -13; 2 nd reading, revising the City of Southlake's Water Conservation Plan. Staff Contact: Robert H. Price, P.E., Public Works Director Chuck Kendrick, Deputy Director - Operations ORDINANCE NO. 895 -B AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF SOUTHLAKE, TEXAS, AMENDING CHAPTER 19 "UTILITIES ", ARTICLE II "WATER ", DIVISION 3 "WATER CONSERVATION" OF THE CODE OF ORDINANCES; PROVIDING THAT THIS ORDINANCE SHALL BE CUMULATIVE OF ALL ORDINANCES; PROVIDING A SEVERABILITY CLAUSE; PROVIDING A PENALTY FOR VIOLATIONS HEREOF; PROVIDING FOR PUBLICATION IN THE OFFICIAL NEWSPAPER; AND PROVIDING AN EFFECTIVE DATE. WHEREAS, the City of Southlake, Texas (the "City ") is a home rule city acting under its charter adopted by the electorate pursuant to Article XI, Section 5, of the Texas Constitution and Chapter 9 of the Local Government Code; and WHEREAS, the City Council finds that conservation of water and protection of water supplies are in the best interest of its citizens; and WHEREAS, the City Council having previously adopted a water conservation plan incorporated into the Code of Ordinances; and WHEREAS, securing future water supplies will require proving to state permitted agencies that existing water supplies are being used efficiently. NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF SOUTHLAKE, TEXAS: SECTION 1. That Chapter 19 "Utilities ", Article II "Water ", Division 3 "Water Conservation" of the Code of Ordinances be and is hereby amended by deleting Section 19 -59 and amending Section 19.61 to read as follows: Sec. 19 -61. Water Conservation Plan (a) The city hereby adopts a water conservation plan for the purpose of setting water conservation goals and best management practices, all as contained in Attachment "A ", attached hereto and incorporated as if fully set forth herein. (1) The water conservation plan proposes a goal of reducing water consumption to a level of 190 gallons per capita per day by 2015 and 180 gallons per capita per day by 2020. SECTION 2. This Ordinance shall be cumulative of all provisions of the Code of Ordinances of the City of Southlake, and other applicable City ordinances, except where the provisions of this Ordinance are in direct conflict with the provisions of such ordinances, in which event the applicability of the conflicting provisions of such ordinances are hereby repealed as they relate to the Property. SECTION 3. It is hereby declared to be the intention of the City Council that the sections, paragraphs, sentences, clauses, and phrases of this Ordinance are severable, and if any section, paragraph, sentence, clause, or phrase of this Ordinance shall be declared unconstitutional by the valid judgment or decree of any court of competent jurisdiction, such unconstitutionality shall not affect any of the remaining sections, paragraphs, sentences, clauses, and phrases of this Ordinance, since the same would have been enacted by the City Council without the incorporation in this Ordinance of any such unconstitutional section, paragraph, sentence, clause or phrase. SECTION 4. Any person, firm or corporation who violates, disobeys, omits, neglects or refuses to comply with or who resists the enforcement of any of the provisions of this Ordinance shall be fined not more than Two Thousand Dollars ($2000.00) for each offense. Each day that a violation is permitted to exist shall constitute a separate offense. SECTION 5. The City Secretary of the City of Southlake is hereby directed to publish the proposed ordinance or its caption and penalty together with a notice setting out the time and place for a public hearing thereon at least ten (10) days before the second reading of this ordinance, and if this ordinance provides for the imposition of any penalty, fine or forfeiture for any violation of any of its provisions, then the City Secretary shall additionally publish this ordinance or its caption and penalty in the official City newspaper one time within ten (10) days after final passage of this ordinance, as required by Section 3.13 of the Charter of the City of Southlake, Texas. SECTION 6. This Ordinance shall be in full force and effect from and after its passage and publication as required by law, and it is so ordered. PASSED AND APPROVED ON 1ST READING ON THIS 7 DAY OF APRIL 2008. MAYOR ATTEST: CITY SECRETARY PASSED AND APPROVED ON 2 ND READING ON THIS 21 T DAY OF APRIL 2008. MAYOR ATTEST: CITY SECRETARY APPROVED AS TO FORM AND LEGALITY: CITY ATTORNEY Attachment "A" Water Conservation Plan I Utility Profile A. Population and Service Area Data 1. A copy of Southlake's Certificate of Convenience and Necessity (CCN) is attached to this Plan. 2. Service Area: 22 Square miles 3. Current population of service area: 27,768 4. Current population served by utility: a: Water 9,635 accounts b: Wastewater 8.206 accounts 5. Population served by water utility for the previous five years: Year Population 2008 26,100 2007 25,700 2006 25,350 2005 24,900 2004 24,555 6. Projected population for the service area for the following decades: Year Population 2010 28,019 2020 29,636 2030 30,107 2040 31,924 2050 34,188 7. List source(s) / method(s) for the calculation of current and projected population: North Central Texas Council of Government, Southlake 2025 Plan, and Southlake Texas Fast Facts 2004 to 2008 B. Active Connections 1. Current number of active connections by user type. If not a separate classification, check whether multi - family is counted as Residential X or Commercial Treated Water Users Metered Not Metered Total Residential — Single Family 8523 N/A 8523 Residential — Multi- family N/A N/A N/A Commercial 962 N/A 962 Industrial N/A N/A N/A Public N/A N/A N/A Other (HOA) 150 N/A 150 2. List the net number of new connections per year for the most recent three C. High Volume Customers 1. List annual water use for the five highest volume retail (R) and wholesale (W) customers. (Indicate if treated or raw water delivery) Customer years: Treated OR Raw 1 Inland Southwest Management (R) 39,248 Treated Year 2008 2007 2008 Residential — Single Family 426 762 1004 Residential — Multi- family N/A N/A N/A Commercial 88 128 141 Industrial N/A N/A N/A Public N/A N/A N/A Other N/A N/A N/A C. High Volume Customers 1. List annual water use for the five highest volume retail (R) and wholesale (W) customers. (Indicate if treated or raw water delivery) Customer Use (1,000 gal. /yr.) Treated OR Raw 1 Inland Southwest Management (R) 39,248 Treated 2 Cencor Realty Services, Inc. (R) 14,684 Treated 3 Southlake Dunhill Holdings (R) 13,909 Treated 4 Carroll High School —Aquatic Center (R) 12,612 Treated 5 Carroll Senior High School (R) 12,179 Treated 11 Water Use Data for Service Area A. Water Accounting Data 1. Amount of water use for previous five years (in 1,000 gal.). (Indicate if treated X or raw water ) YEAR FY - 04 FY - 05 FY - 06 FY - 07 FY - 08 October 243,293 202,833 386,659 318,686 255,776 November 173,114 111,854 267,593 196,335 199,380 December 143,816 111,454 178,103 151,935 150,428 January 117,870 102,542 254,082 108,395 132,774 February 97,550 83,202 94,953 117,476 128,767 March 134,340 106,772 167, 606 173,958 150,541 April 174,840 254,309 278,679 173,533 166,503 May 240,422 260,416 351,088 159,462 249,810 June 178,350 379,141 453,869 169,422 413,039 July 325,909 428,617 538,570 228,848 497,648 August 336,271 405,574 542,001 345,295 399,659 September 297, 700 357,883 306, 976 319,864 367,358 Total 2,463,475 2,804,597 3,820,178 2,463,211 3,111,682 Please indicate how the above figures were determined (e.g., from master meters located at the point of diversion from a stream or located at a point where raw water enters the treatment plant or from water sales). The Citv of Southlake Durchases treated water from the Citv of Fort Worth. All of the citv's water supply is delivered from Fort Worth via two pipelines, both shared with the City of Keller. Both pipelines are metered at the point where they leave the Fort Worth water system and at the entry to the resaective customer citv's DumD stations. The fiaures above rearesent the entry point to the Southlake pump station 2. Amount of water (in 1,000 gal.) delivered (sold) as recorded by the following account types for the previous five years Total Year Residential Commercial Industrial Wholesale Other Sold FY - 04 2,033 391 N/A N/A N/A 2,424 FY - 05 2,188 468 N/A N/A N/A 2,657 FY - 06 2,764 621 N/A N/A N/A 3,385 FY - 07 2,098 588 N/A N/A N/A 2,686 FY - 08 2,771 736 N/A N/A N/A 3,507 3. List previous five years records for water loss. Year Amount (Gal.) FY - 04 38,805,843 FY - 05 147,557,617 FY - 06 434, 812, 236 FY - 07 -223,323,572 FY - 08 - 396,288,740 4. List previous five years records for annual peak -to- average daily use ratio. Year Average MGD Peak MGD Ratio FY - 04 10.1 26.8 37% FY - 05 7.8 17.2 45% FY - 06 13.1 27.0 49% FY - 07 9.8 23.9 41% FY - 08 7.4 21.2 35% 5. List total per capita use for previous five years. Per Capita Use (apcd) 270 302 406 258 306 Total Water Year Population Purchased (1,000 92 FY - 04 24,900 2,463,475 FY - 05 25,350 2,804,597 FY - 06 25,700 3,820,178 FY - 07 26,100 2,463,211 FY - 08 27,768 3,111,682 Per Capita Use (apcd) 270 302 406 258 306 6. Seasonal water use for the previous five years (in gallons per person per day). (Base = Dec., Jan., & Feb. usage /Summer = Jun., Jul., & Aug. usage) B. Projected Water Demands Project water supply requirements for the next ten years using trends, historical water use and economic growth, etc. Projected Water Demand 40 35 30 25 -- — — 20 15 10 5- 0 8 O O N M'q LO O r- M O O N N N N N N O O O O O O O O O O O O O O O O Year ` Data Source: Water & Sewer Capital Improvements Plan 2008 Water & Sewer Impact Fee Update 111 Water Supply System A. Water Supply Sources The City of Southlake purchases 100% of the water supply, treated, from the City of Fort Worth. The water is delivered via two pipelines from the Fort Worth water system. The capacity of these supply lines is approximately 29 MGD Base Per Summer Per Year Population Capita Use Capita Use pcd pcd FY - 04 24,900 159 367 FY - 05 25,350 129 520 FY - 06 25,700 225 649 FY - 07 26,100 159 310 FY - 08 27,768 163 513 B. Projected Water Demands Project water supply requirements for the next ten years using trends, historical water use and economic growth, etc. Projected Water Demand 40 35 30 25 -- — — 20 15 10 5- 0 8 O O N M'q LO O r- M O O N N N N N N O O O O O O O O O O O O O O O O Year ` Data Source: Water & Sewer Capital Improvements Plan 2008 Water & Sewer Impact Fee Update 111 Water Supply System A. Water Supply Sources The City of Southlake purchases 100% of the water supply, treated, from the City of Fort Worth. The water is delivered via two pipelines from the Fort Worth water system. The capacity of these supply lines is approximately 29 MGD B. Treatment and Distribution System Design daily capacity of system: 29 MGD 2. Storage Capacity: Elevated 6 MG , Ground 15 MG 3. If surface water, do you recycle filter backwash to the head of the plant? Southlake does not own /operate a water treatment facility. 4. Describe the water system. As stated above Southlake purchases treated water from the City of For Worth. That water is delivered to our primary pump station where it is stored in 2 — 5 Million Gallon ground storage tanks. From that point water is pumped in to the high pressure plane served by 1 — 1.5 Million Gallon elevated storage tank or in to the low pressure plane served by 3 — 1.5 Million Gallon elevated storage tanks. There is a second pump station with 1 — 5 Million Gallon ground storage tank on the north side of town for additional capacity for the low pressure plane. It does not currently have a large capacity delivery supply line therefore is Presently used to supplement peak demands in the summer by back filling from the distribution system during off -peak periods on the day. The supply line to provide to provide full service to that station is being constructed in multiple phases. The first phases are under construction with the remaining phases in design. A detailed map of the entire system is included with this system profile. IV Wastewater Utility System A. Wastewater System Data Design Capacity of wastewater treatment plant(s): Southlake's wastewater is treated at two treatment plants operated by the Trinity River Authority (TRA). Southlake's collection system is divided in to two major watersheds. The north watershed Flows to TRA's Denton Creek Regional Wastewater Treatment Facility and the south watershed flows to the TRA Central Wastewater Treatment Facility. 2. Treated effluent is controlled by the Trinity River Authority. 3. Briefly describe the waste water collections system serviced by the water utility. Southlake's wastewater collection system is divided in to two major watersheds. In addition to the network of gravity pipelines, the city operates 13 lift stations to assist in the collection and delivery of the flow to the TRA treatment facilities. A detailed map of the collection system including the lift stations and force mains is included with this plan. B. Wastewater System Data 1. Percent of water service area served by wastewater system: 85% 2. Monthly volume treated for the last three years (in 1,000 gallons) Monthly Wastewater Flows (x 1,000 Gallons) V Water Conservation Goals and Best Management Practices A. Water Conservation Goals The Water conservation goals for the plan are consistent with regional goals and were developed assuming a year of average rainfall. Per capita goals of 190 gpcd and 180 gpcd are the targets for 2015 and 2020 respectively. The Best Management Practices (BMPs) already in place and proposed for future years are outlined in the next section of the plan. In addition to the BMPs in this plan, the city's water conservation ordinance prohibits the wasting of water including restricting the operation of irrigation systems between 10 am and 6 pm year- round. The City's Drought Contingency / Emergency Water Management Plan imposes mandatory outdoor water use restrictions during different drought stages. FY 06 FY 07 FY 08 October 69,502 64,709 91,458 November 67,254 59,676 77,268 December 67,813 65,215 90,412 January 66,790 68,913 89,209 February 59,794 57,411 82,418 March 71,790 64,697 98,511 April 67,647 71,066 105,173 May 69,642 79,537 116,056 June 64,497 79,446 109,338 July 61,002 70,844 113,800 August 72,348 86,561 108,997 September 67,155 83,280 110,249 V Water Conservation Goals and Best Management Practices A. Water Conservation Goals The Water conservation goals for the plan are consistent with regional goals and were developed assuming a year of average rainfall. Per capita goals of 190 gpcd and 180 gpcd are the targets for 2015 and 2020 respectively. The Best Management Practices (BMPs) already in place and proposed for future years are outlined in the next section of the plan. In addition to the BMPs in this plan, the city's water conservation ordinance prohibits the wasting of water including restricting the operation of irrigation systems between 10 am and 6 pm year- round. The City's Drought Contingency / Emergency Water Management Plan imposes mandatory outdoor water use restrictions during different drought stages. B. Best Management Practices a Essential Plan Element BMP �F 190 180 Conservation Goal gpcd gpcd Track the Plan's X X effectiveness Annual Water Audits M aster meters already exis u a project to System Master Meters replace three of the four meters to improve X accuracy is presently underway Large Meter Testing -Annual testing and repair /replacement of meters larger than 2" X X began in 2007 Residential Meter Replacement Program - Residential Meters 2" and smaller are X X Universal Metering Program replaced on a 10 year cycle 2" Commercial and Irrigation Meter Evaluation - Test a representative sample of this meter X group to determine the life cycle M eter Public Uses of ater -Accounting for water use at Parks, DPS, Public Works, Town X X Hall, and other public uses. Monthly Water Audits X X Control Water Loss Visual Delivery Line Inspections - FleriodiC inspection of the delivery line routes. X X Use the city's SCADA system to monitor pressure loss in regions of the city for rapid X X Leak Detection Program detection of water main breaks Use audio amplification equipment to locate sources of small water leaks X X Continuous updates to the City's website X X p romoting water conservation Use Connect -CTY (mass phone messaging) X X for urgent water notification Public Education Dedicated mail -out & flyers in water bills X X specifically addressing Water Conservation Water Harvesting Demonstration at the X X Nature Center Y ear-round prohibition ot lawn irrigation between the hours of 10 a.m. and 6 p.m. X X The City's present rate structure complies with this requirement - the unit cost increases with X X the consumption "Non- Promotional" Water A rate study is planned for this fiscal year and X Rate Structure will continue to be an escalating scale with the intention of discouraging excessive water use. Include a monhly fee in the future rate structure to fund the hiring a Water X X Conservation Coordinator A R R A N TC y , E LU in i I 11. A 2000 JAN 16 P11 3: 24 SUZANP h'EIPERSON1 CO U N TY C .=E w mm rs p OUN tW IiiM 3011UMV ml . i"m 0 0 U O L) 9992 OE 100 Z < LU ) 0 F W E < jp -,7 -1,1111 MO. o L L x d Ij -� 0 aJ 11 cu �-z c,,I...—.Ij-!.;,-. 8 cr U) Lu i i m — x < U) - L q a) co 6 z j n x f _ w 0 0 c � o- fu Z c - o m y U) z LL 3: LL 0 L) ,6 z o LL u- LL u- LL LL w < <000 OOZOLLJ L) 0 C � C) 4) LU LU " o w < o cl) z Ln co (D LO co cm co �: q w a) u� m m o) N 01 N z I cc z A R R A N TC y , E LU in i I 11. A 2000 JAN 16 P11 3: 24 SUZANP h'EIPERSON1 CO U N TY C .=E w mm rs p OUN tW Water Infrastructure i LEGEND N AR� 7 Waterlines by Diameter' Fire Hydrants e �s�nch wa<er storage Faaiity e - � en, — 9,,h Ell old 3inch • Ground 4lnch U� Sou[hlake City omits — —minah 6 "h ............... county B... dory aind, 'WBOBJO _ — — — — t2 inch is inch to inrn 20 Inch /. — — 24 inch 30 inch ..........._ ............................. I ..... ._. .. .... , .. — ....._._...... c........ .._...:.::...:........_......_. WH I.i:� R 111 11 N � 11111111 I 111 11 ■i■o ®m i=■NE ■ ■,1 l� M low mm M I o { � � r -- TM� 1E I LastWatl Revision 16 20M 04 avai muacy _ / rnsaid mm. Last Basemap Revlslon - 12/O1j2N8 � ti. rarrarrt coinry i x � P N �� Wy -E scale 1'. nch= MOfl 1 lNOfeet 1� T Wit, HELIER � � CI Dz - tment of Plam n0 and Development Services 6l,phi, Info —ti— Systems i N AR� 7 WH I.i:� R 111 11 N � 11111111 I 111 11 ■i■o ®m i=■NE ■ ■,1 l� M low mm M I o { � � r -- TM� 1E I LastWatl Revision 16 20M 04 avai muacy _ / rnsaid mm. Last Basemap Revlslon - 12/O1j2N8 � ti. rarrarrt coinry i x � P N �� Wy -E scale 1'. nch= MOfl 1 lNOfeet 1� T Wit, HELIER � � CI Dz - tment of Plam n0 and Development Services 6l,phi, Info —ti— Systems Sanitary Sewer Infrastructure LEGEND Manholes Gravity Lines by Diameter Southlake City Limi6 Clean outs— 0 mch - - - - -- County Boundary d Lift MAtons A 11h '�,.. Drainage Basn Divide m TPA Lift Station 10 inch Drainage &dsns ® Ai r Release Assembly —12 inch 106Vear Flood Plain m Plug Valve — 15 inch — 18 inch 24 inch 2] inch Force Main Private Sewer System — Un knowNNo Into Big Bear Creek 0,dal l (TPA) Grap e��e - e Ta —minty JiLELL IJ e z3 " FAST HI QHLA __t N t l 4ale 1.12000 1 '1 =1000 feet �fe�a of a E " l e? a T � ,<I� se�o�� a d� a�. � m dm aua Lastsewvr Rev - oa /la2ma rnsaid dam. Last Basemap Revlsi n- 12/012008 Department of Plannlrg and Development Sees GeNgraFhlc fi forum Systems