RE: Plan Amendment Process Documentation and Staff Recommendation

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1 TO: FROM: Executive Committee Metro Water District Staff DATE: November 12, 2018 RE: Plan Amendment Process Documentation and Staff Recommendation (City of Auburn) The Metropolitan North Georgia Water Planning District received a request from the City of Auburn to modify the Water Resource Management Plan. According to the Plan Amendment Guidelines adopted by the Board on August 28, 2013, District staff is required to provide the Executive Committee a category recommendation concerning the plan amendment request prior to the meeting. The staff recommends the following change outlined below: Amendment Request: Local Jurisdiction: Description: Staff Recommendation: Appendix B, Gwinnett County - Water City of Auburn The City of Auburn requests that Table 5-2 Surface Water Supply Sources Through 2050 and Appendix B, Gwinnett County Water, be revised to include the City of Auburn s proposed Raw Water Storage Pond and Water Treatment Plant in the Oconee River Basin. Additional background is provided in the attached letter along with the proposed red line revisions of Table 5-2 and Appendix B. District staff recommends this request be categorized as a major amendment and subject to a 30-day public comment period because modification of the plan is local in nature but may be objected to by other local parties.

2 SECTION 5 ACTION ITEMS Table 5 2. Surface Water Supply Sources Through 2050 Water Supply Source Owner/Operator Utilizing Source 2014 Permitted Monthly Average Day Withdrawal (MGD) a 2050 Planned Monthly Average Day Withdrawal (MGD) Lake Kedron j Lake Peachtree (Flat Creek) j Horton Creek Reservoir i Whitewater Creek i Fayette County Water System Lake McIntosh Fayette County Water System 12.5 Still Branch Creek Reservoir k City of Griffin (provides water to Pike, Spalding and Coweta Counties) Monthly Average Day Withdrawal in Flint River Basin Ocmulgee River Basin W.J. Hooper Reservoir (Little Cotton Indian Creek) Clayton County Water Authority Edgar Blalock Jr. Reservoir (Pates Creek) h John Fargason (Walnut Creek) Reservoir City of McDonough S. Howell Gardner (Indian Creek) Reservoir l Rowland (Long Branch) Reservoir l Henry County Water Authority 10 Towaliga River Reservoir Tussahaw Creek Reservoir Big Haynes Creek (Randy Poynter Lake) Rockdale County Brown Branch City of Locust Grove Monthly Average Day Withdrawal in Ocmulgee River Basin Oconee River Basin Cedar Creek Reservoir m City of Gainesville 2 0 North Oconee River m Raw Water Storage Pond o City of Auburn Monthly Average Day Withdrawal in Oconee River Basin Tallapoosa River Basin Lake Paradise (Little Tallapoosa River) j City of Villa Rica Cowens Lake (Astin Creek) j Monthly Average Day Withdrawal in Tallapoosa River Basin Total Permitted Withdrawal in Monthly Average Day 1, ,184.2 District n AAD MGD WATER RESOURCE MANAGEMENT PLAN PAGE 5 47 METROPOLITAN NORTH GEORGIA WATER PLANNING DISTRICT WT ATL JUNE 2017

3 SECTION 5 ACTION ITEMS a Only the primary sources of water are shown because that is where the intake is located. The supplemental source may be utilized to pump and store water in the primary source or as a substitute for the primary source when it is not available, based on the conditions specified in their individual permit. b The Bear Creek Reservoir withdrawal serves as a supplemental supply to the primary Dog River Reservoir Source (Permit No ). The withdrawals stated for the Dog River and Bear Creek Reservoirs cannot be added; the total permitted withdrawal from both sources is 23 MGD. The Dog River Reservoir releases are augmented with reuse water from the Douglasville Douglas County Water and Sewer Authority s South Central WWTP, which is piped to a point below the foot of the dam. c The City of East Point has one surface water withdrawal permit for withdrawal from Sweetwater Creek. The City may supplement the withdrawals from Sweetwater Creek with water from the George Sparks Reservoir. Amounts are not to exceed quantities shown on the permit. d The J.T. Haynes Reservoir is a pump storage facility that receives water from three different sources, Sandy/Browns Creek, White Oak Creek, and Line Creek. e The City of Cartersville has two intakes covered by one permit. The combined total withdrawal for the Etowah River and the Allatoona Lake intakes shall not exceed the permitted monthly average day withdrawal of 23 MGD. Of that permitted amount, up to 18 MGD may be withdrawn from Allatoona Lake on a monthly average day basis. f Construction of the Hickory Log Creek Reservoir was completed in Cobb County Marietta Water Authority is entitled to 75% (33 MGD) of the water from the project and the City of Canton to the remaining 25 percent (11 MGD). The withdrawal intakes for Cobb County Marietta Water Authority and City of Canton are not located in the reservoir, but in the Etowah River and Allatoona Lake, respectively. g In October 2015, the U.S. Army Corps of Engineers granted a 404 Permit allowing the construction of the Richland Creek Reservoir Water Supply Program ( information/background/). h Clayton County Water Authority can withdraw any combination of flow from J.W. Smith Reservoir and Edgar Blalock Jr. Reservoir not to exceed a combined total withdrawal of 10 MGD. J.W. Smith Reservoir on Shoal Creek is a pump storage facility that receives water from the Flint River. i These two sources share a combined permit limit. j Lake Horton is a pump storage facility only that receives water from the Flint River and Whitewater Creek. k The permitted monthly average day withdrawal is 42 MGD for the entire reservoir. This reservoir is located outside of the District and is owned by the City of Griffin. The reservoir serves Pike and Spalding Counties, as well Coweta County. Coweta County currently has a purchase contract for 3.00 MGD of finished water from the City of Griffin through June 30, The amount increases to 5.00 MGD on July 1, 2022 through the duration of the contract ending in l Henry County Water Authority may withdraw the combined permitted monthly average day withdrawal of 24 MGD from these three intakes without exceeding each individual limit. m Cedar Creek Reservoir is a pump storage facility that receives water from the North Oconee River. This reservoir was built in 2000 and may be used as a future potential water supply source. n Monthly average day is 1.2 times AAD. o The Auburn Raw Water Storage Pond and pumping system will be capable of providing 1.59 MGD annual average day flow to meet the City s long term water supply needs. Two intakes on Rock Creek (tributary to Mulberry River) will have the transfer capacity of 15.6 MGD peak day to the Raw Water Storage Pond Planned Reservoirs As of the date of this Plan, the Richland Creek Reservoir is the only reservoir that is permitted and under construction in the Metro Water District. The Richland Creek Reservoir is a pumped storage reservoir which receives supply from the Etowah River. Paulding County is developing the Richland Creek Reservoir, located in Paulding County and in the Coosa River Basin. This includes the raw water intake infrastructure, a new water treatment facility and related water transmission and distribution infrastructure to provide potable water supply in the county. The Glades Reservoir in Hall County is not currently planned as a water supply reservoir. Therefore, it is not included as a component of this Plan for water supply purposes. The Bear Creek Reservoir, in South Fulton County, is currently under local consideration, but it is not permitted (as of June 2017). If it is permitted and constructed, it would be the main water supply source for the Palmetto, Union City and Fairburn communities in South Fulton County. Union City and Fairburn are currently supplied with water from the City of Atlanta and Palmetto has its own limited supply. Both the reservoir and the City of Atlanta water supply source are within the Chattahoochee River basin. If the reservoir and supporting WTP are constructed, this new reservoir will decrease the need for water supplied from the Chattahoochee River by PAGE 5 48 JUNE 2017 WATER RESOURCE MANAGEMENT PLAN METROPOLITAN NORTH GEORGIA WATER PLANNING DISTRICT WT ATL

4 Gwinnett County - Water Summary of Planned Sources Local Water Current Permitted Withdrawal Planned 2050 Withdrawal (MGD) Source Provider Monthly Average (MGD) Monthly (Note 1) Peak Day Lake Lanier Gwinnett Buford Crystalline Rock Aquifer Lawrenceville Raw Water Storage Pond Auburn Total Withdrawal (MGD) Notes: (1) Monthly average day is 1.2 times annual average day. (2) The Auburn Raw Water Storage Pond and pumping system will be capable of providing 1.59 MGD annual average day flow to meet the City s long term water supply needs. Two intakes on Rock Creek (tributary to Mulberry River) will have the transfer capacity of 15.6 MGD peak day to the Raw Water Storage Pond. Summary of Needs 2025 Peak Day (Note 3) 2050 Peak Day (Note 3) (PD MGD) (PD MGD) Water Demands & Capacities Scenario 1 Scenario 2 Scenario 1 Scenario 2 Gwinnett County Needs Total Projected Demand from Facilities (PD-MGD) Treatment Capacity (Note 4) Total Projected Demand from Facilities (AAD-MGD) Scenario (AAD-MGD) Scenario (AAD-MGD) Scenario (AAD-MGD) Scenario (AAD-MGD) Notes: (3) Peak day is 1.6 times annual average day. (4) Scenario 2 is being used for the phasing plan below. Phasing Plan Facilities (Note 5) Chattahoochee Basin Gwinnett Lanier WTP Gwinnett Shoal Creek WTP Buford WTP Oconee Basin Auburn WTP Groundwater Lawrenceville Total Capacity (PD-MGD) Notes: Capital Projects Expand Buford WTP Construct and expand Auburn WTP Existing (2016) By 2025 By 2050 Permitted Plant Capacity Plant Capacity at End of Period Plant Capacity at End of Period (PD-MGD) (PD-MGD) (PD-MGD) (5) The schedule shown above is intended to be a general guideline to identify general expansion needs. Expansion capacity may be required sooner or later than indicated depending on local population and employment growth, water service extensions and other planning variables. Specific conditions for withdrawal and operation permits will be determined by Georgia EPD. Non-Capital Programs The following non-capital programs are specific to Gwinnett County. These programs are in addition to those that apply to all counties within the Metro Water District. Maintain interconnections with Hall, Fulton, DeKalb, Cobb, Forsyth, and Rockdale Counties and the City of Auburn. PAGE 24 JUNE 2017 WATER RESOURCE MANAGEMENT PLAN METROPOLITAN NORTH GEORGIA WATER PLANNING DISTRICT

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8 AUBURN WATER SERVICE AREA CITY OF WINDER HWY MT. MORIAH RD. MILL RD. PARKS COUNTY LINE - AUBURN ROAD DEE KENNEDY RD. CRONIC TOWN RD. HARMONY GROVE CHURCH RD. DEE KENNEDY RD. FLANAGAN MILL RD. BOSS HARDY RD. BANKHEAD HWY CARL CEDAR HILL RD BOSS HARDY RD. S.R. 211 CLYDE BOYD RD. OLD HOG MOUNTAIN RD. COUNTY LINE - AUBURN ROAD DEE KENNEDY RD. THOMPSON MILL RD. OLD COVERED BRIDGE RD. PEARL PENTECOST RD CARL CEDAR HILL RD MULBERRY RD S.R. 211 S.R. 211 S.R. 211 ROCKWELL CHURCH ROAD WILL MAYNARD RD THAN SKINNER RD BARROW CO JACKSON CO CHICKEN LYLE ROAD ROCKWELL CHURCH ROAD MILES PATRICK RD CITY OF WINDER BARROW CO JACKSON CO GAINESVILLE HWY S.R. 53 Hayes ames ENGINEERS, PLANNERS & SURVEYORS 4145 SHACKLEFORD ROAD SUITE 300 NORCROSS, GEORGIA TEL: (770) FAX: (770) CITY OF AUBURN P.O. BOX TH AVE. AUBURN, GA PHONE: (770) CONTACT: LINDA BLECHINGER (770) c Copyright 2018 HAYES, JAMES & ASSOCIATES, INC This drawing and their reproductions are the property of the engineer and may not to be reproduced, published, or used in whole or in part without the written permission of the engineer. Project Title AUBURN & WINDER RAW WATER SUPPLY PROJECT Project Location Address City, State Zip Land Lot District-Section County Project No. Drawn By: Checked By: Initial Issue Date: Sheet Title VARIES VARIES NA DISTRICTS 2 AND 6 BARROW RAR JWH APRIL 16, 2015 LOCATION MAP Sheet Number 1 ISSUE No. Description By App. Date 1 EID SUBMITTAL RAR JWH 4/16/ WATER WITHDRAWAL APP; WINDER SERVICE AREA ADDED RAR JWH 5/14/2015 This document is prepared for the exclusive use #### of and shall not be relied on by any other person or entity.

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