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4.1 NATURAL RESOURCES
Environmental Planning Criteria
Environmental condi ons place certain opportuni es and constraints on the way that land is u lized. Many areas and resources that are vulnerable to the impacts of development require protec on by government regula on and by other measures. Soil characteris cs, topography, and the frequency of ood- ing are just a few of the factors that a ect where development can safely and feasibly be accommodated. Other areas such as wetlands, forest areas, and sensi ve plant and animal habitats are also vulnerable to the impacts of development.
As the City of Atlanta and the surrounding areas con nue to grow, the conser- va on of exis ng and nding opportuni es for the protec on of environmen- tally-sensi ve and ecologically-signi cant resources is becoming increasingly Cha ahoochee River is the City and the important. The City of Atlanta’s vision is to balance growth and economic de- Region’s main water resource. velopment with protec on of the natural environment. This is to be done in conjunc on with the statewide goal for natural resources, which is to con- serve and protect the environmental and natural resources of Georgia’s com- muni es, regions, and the State.
The City of Atlanta takes pride in the diversity of natural resources that lie within its city limits. Whether enjoying the vista that the Cha ahoochee River o ers or making use of the many parks and trails that traverse the city, or the urban forest, the City of Atlanta has an abundance of natural resources which need protec on and management. An understanding of the exis ng condi ons provides the founda on for developing appropriate community programs through the planning process. The Georgia Department of Community A airs Minimum Planning Standards requires that the City of Atlanta iden fy resources de ned in the Environmen- tal Planning Criteria: water supply watersheds, groundwater recharge areas, wetlands, protected river corridors and mountains. This sec on provides an Peachtree Creek is one of the main Chat- inventory of the natural and environmentally sensi ve resources, including thochee River tributaries in the City of the minimum criteria, which are located within the City. This sec on also Atlanta. iden es the programs, regula ons, and ac vi es currently in place to pro- tect these natural resources. Addi onally, this sec on addresses the issues, problems and opportuni es associated with these resources.
Water Resources
The City of Atlanta has abundant and valuable streams, rivers, lakes, and wet- lands. These natural water features support a wide variety of uses for its ci - zens, from drinking water to recrea on and irriga on. Addi onally, water pro- vides wildlife habitat for both aqua c (water living) and terrestrial (land living) animals. Both animals and humans depend on having a clean water source for survival. Therefore, the forces that impact the health of the local water supply are important to understand. This sec on includes an inventory of the City’s water resources including its watersheds, rivers and streams, water supply watersheds, wetlands and oodplains. North Utoy Creek in a DWM Conserva on property.
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Watersheds
Atlanta is the mee ng point for ten major stream drainage basins and smaller por ons of 5 addi onal drainage basins, which supply two River basins—the Cha ahoochee River and the Ocmulgee River.
On the West and North sides of the City, the Cha ahoochee River is supplied by seven stream drainage basins: Long Island Creek, Nancy Creek, Peachtree Creek, Proctor Creek, Sandy Creek, Utoy Creek, Camp Creek and Bakers Ferry basins. In the Southeast sec on of the City, the Ocmulgee River is supplied by three stream drainage basins: Sugar Creek, Intrenchment Creek, South River, Dooli le Creek, Flint River, Mud Creek, and Shoal Creek. (The Bakers Ferry Basin and Dooli le Creek, Flint River, Mud Creek, and Shoal Creek subwater- sheds have only limited extent within the City of Atlanta and are not further addressed because they are predominantly located within and managed by Nancy Creek is one of the main streams in other jurisdic ons). the Cha hoochee River watershed. Each stream drainage ba-
Table 4.1 1: City of Atlanta River Basins and Primary Tributary Watersheds sin watershed is bound- ed by ridgelines which Primary Tributary River Basin Primary Ridge Lines and street network cradle oodplain valleys Watersheds where the headwaters of Chattahoochee Long Island Creek East : Ridgewood Road and Mount Paran Road. several tributary creeks Nancy Creek West: Ridgewood Road and Mount Paran Road South: Moore'sMill Road and originate as springs. West Pace's Ferry Road, Peachtree Road. Peachtree Creek North: Wesley Parkway, Moore's Mill Road and West Pace's Ferry Road, These spring waters ow Peachtree Road. into the principal creek, West: Northside Drive, West Marietta Street, Marietta Road, South across Southern Railway/Inman Yards, James Jackson Parkway. which eventually ows Sandy Creek North: Hightower Road, Bankhead Highway, Interstate 285. through a stream way
Utoy Creek South: Martin Luther King, Jr. Drive, Gordon Road/ corridor and oodplain to supply a river. North Gordon Street, Martin Luther King, Jr. Drive, Gordon Road.
East Chattahoochee Ocmulgee Two River Ridge Line From Atlanta’s earliest days, the network of its Railroad line bordering Murphy Avenue and Lee Street. major arterial roads has South: Campbellton Road. followed the ridgeline
Ocmulgee Sugar Creek North : Chattahoochee Ocmulgee Two River Ridge Line. network bordering the river and stream basins. DeKalb Avenue, bordering the Seaboard Railway and the CSX Railway line. The rela onship between South River Atlanta’s stream basin
Intrenchment Creek North: Chattahoochee Ocmulgee Two River Ridge Line. ridgeline system and the roadway framework is DeKalb Avenue and Forsyth Street railroad, bordering Peters Street. shown in Table 4.1-1. East: Flat Shoals Ave., Bouldercrest Drive The two con nental West: Whitehall Terrace, Ridge Avenue, and McDonough Boulevard. plates that comprise each river basin interface in the Central Business District (CBD). This plate boundary runs along a ridge line which originates east of Atlanta, travels westward to enter the City along what is now DeKa- lb Avenue, crosses Woodru Park to Forsyth Street, and then arches to the southwest, paralleling Spring Street and Peters Street.
The headwaters/springs for several creeks in the Cha ahoochee River Basin
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Atlanta's High Points and Watersheds
COORDINATE SYSTEM: THIS MAP IS PROVIDED AS A PUBLIC SERVICE NAD 1983 STATE PLANE GEORGIA WEST
MAP UNITS: The City of Atlanta has made known that this Data contains known errors and CITY OF ATLANTA U.S. SURVEY FEET inconsistencies. The city of Atlanta in no way ensures, represents or warrants the accuracy and/or reliability of the Data and/or map products being developed. The user of the Data and SCA LE: MAP SHEET #: DEPARTMENT OF WATERSHED MANAGEMENT or map products assumes all risks and liabilities which may arise from the information N / A 2 of 2 produced by Maps or Data furnished to User by the City of Atlanta. DATE: MAP REQU EST #: 07/29/2010 13322
Map 4.1-1: Atlanta’s High Points and Watersheds
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and the Ocmulgee River Basin originate within a een-block radius of the Five Points intersec on. Waters from these springs are currently routed to the storm sewer system that carries the water to the rivers via ou all pipes, which feed the creeks. A por on of 10 watersheds are located within the City of Atlanta (See Map 4.1-1 Atlanta’s High points and Watersheds and Map 4.1-2). Programs and Regula ons
Several programs and regula ons are in place to protect the rivers and streams in Atlanta’s watersheds. These are discussed below.
Metropolitan River Protec on Act: Metropolitan River Protec on Act: As the Region’s primary drinking water source, the Cha ahoochee River has always been a priority for resource protec on by the City of Atlanta, the Atlanta Regional Commission (ARC) and the State of Georgia. In 1973, the Georgia Assembly enacted the Metropolitan River Protec on Act, which establishes a 2000 foot corridor along both banks of the Cha ahoochee River and its impoundments between Buford Dam and Peachtree Creek. In 1998, the Act was amended to extend the corridor to the downstream limits of Fulton and Douglas Coun es. As required under the Act, ARC adopted the Cha ahoochee Corridor Plan. The Plan sets development standards to protect the land and water resources of the corridor and the River, including limits on land distur- bance and impervious surface, bu ers and setbacks along the River and des- ignated tributaries and oodplain requirements. All land disturbing ac vity in the corridor is subject to review by ARC for consistency with Plan standards. Under the Act, local governments act on ARC review ndings, issue permits for approved proposals, monitor land-disturbing ac vity in the corridor and enforce the Act and the Plan in the corridor. Proctor Creek near the Cha ahoochee River. Cha ahoochee River Project: The Cha ahoochee River Project is an e ort to establish a river greenway park along the en re Cha ahoochee River Cor- ridor in the City of Atlanta. The purpose of the project is to reclaim the Chat- tahoochee River corridor and to conserve it as a sustainable resource. Greenway Acquisi on Project: Under a Supplemental Environmental Program that was established by a federal consent decree, the City of Atlanta invested $25 million in the purchase of property and easements along selected por- ons of streams in Metro Atlanta that ow into the Cha ahoochee and South Rivers. The Greenway Acquisi on Project was implemented to improve water quality in Metro Atlanta streams and the Cha ahoochee and South Rivers. The land has been converted to and/or preserved as “greenways”, which are undeveloped and undisturbed corridors along stream banks that serve as natural lters to trap sediment and other pollutants carried by stormwater before they reach the streams. The natural vegeta on of greenways also pro- vides wildlife habitats and stream bu ers.
Clean Water Atlanta Program: The Clean Water Atlanta Program includes ve components: 1) professional management of the Consent Decree Program; 2) the strategy to reduce ooding and pollu on from stormwater by imple- A conserva on easement for this greenway was purchased with Greenway Acquisi on men ng a stormwater u lity; 3) the SSO Consent Decree compliance; 4) wa- Project, NPUE. ter quality monitoring; and 5) CSO Consent Decree compliance. Each of these e orts is described below.
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1. Professional Management of Consent Decree Program: The Department of Watershed Management (DWM) was created in 2002 to oversee the City’s new comprehensive approach to solving water and wastewater is- sues. The DWM includes the City’s two water-related bureaus --Waste- water Services and Drinking Water--along with Engineering Services, Watershed Protec on, and the proposed Stormwater Management U l- ity. This organiza onal structure allows DWM to plan, design, construct, operate and maintain the City’s en re system of water and waste water treatment, pumping, collec on and distribu on, and proposed stormwa- ter management facili es, as well as maintain compliance with state and federal environmental regula ons.
2. Strategy to manage stormwater and pollu on caused by stormwater: The City’s goal is to implement a stormwater u lity. A stormwater u lity will provide a dedicated source of revenue for developing and maintaining stormwater infrastructure and reducing stormwater pollu on.
3. SSO Consent Decree Compliance: The First Amended Consent Decree (FACD) addresses improvements in the City’s sanitary sewer system and requires the elimina on of sanitary sewer over ows (SSOs). Under the FACD, the City is evalua ng, repairing, replacing and/or rehabilita ng all 2,200 miles of sewer throughout the City and implemen ng long-term preven on and maintenance strategies under “Opera on Clean Sewer.” Opera on Clean Sewer is an aggressive approach to inspec ng, cleaning and relining the sewer system, and includes a full-scale grease manage- ment program that was launched in January 2003. Opera on Clean Sewer will allow the City to achieve all FACD obliga ons by the CD schedule.
4. Water Quality Monitoring: The City has partnered with the USGS to im- plement a comprehensive water quality monitoring plan. There are cur- Peachtree Creek at the Bobby Jones Golf rently 11 fully instrumented sites. In addi on, the Long-Term Monitoring Course. Program will help the City to track water quality improvements associ- ated with Clean Water Atlanta.
5. CSO Consent Decree Compliance: The City has received regulatory autho- riza on to implement the re ned Combined Sewer Over ow (CSO) Re- media on Plan. The CSO Plan, which was completed in 2008, will enable the City to achieve the highest water quality at the lowest cost within the shortest me frame. The City will achieve CD compliance using a com- bina on of technologies: separa on of two full basins (Greensferry and McDaniel) and one sub-basin (Stockade); elimina ng two CSO facili es; and construc ng a tunnel storage and treatment system to capture and treat 99% of the sewage and 85% of the stormwater from the remaining combined area.
Metropolitan Atlanta Urban Watershed Ini a ve: Another program for the protec on of City streams is the Metropolitan Atlanta Urban Watershed Nancy Creek at the Blue Heron Nature Ini a ve (MAUWI), which is a joint ini a ve by the City of Atlanta, Fulton Preserve, NPU B. County, and DeKalb County. Its overall goal is to determine the current condi- ons and uses of Atlanta’s urban streams, to assess the sizes and impacts of the di erent pollu on sources, and to evaluate op ons for improving water quality. The outcome of MAUWI was the MAUWI Watershed Management Guidance Document, which established a vision and goals intended to guide
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the City and community groups in the care and development of the City’s watersheds.
The MAUWI Vision is “Healthy and aesthe cally appealing streams for our- selves, our children, and our downstream neighbors, with a diverse and healthy aqua c life and habitat, supported by an educated and involved ci zenry, government, and business community, and a future for ood-free neighborhoods.” The goals that were established by MAUWI are as follows: Reduce li er in streams, Meet water quality standards in streams, Improve water quality in streams, Improve stream habitat, Implement cost-e ec ve strategies, Reduce ooding of human structures, Increase health and diversity of aqua c life, and Increase ci zen, government, and business awareness of watershed pollu on.
Stormwater Management: The City is required to address non-point source pollu on through its Na onal Pollu on Discharge Elimina on System (NP- DES) Municipal Separate Storm Sewer System (MS4) permit. The permit, rst issued in 1991, requires the City to develop a Stormwater Management Program (SWMP) that outlines the ac vi es the City will conduct to address stormwater run-o . As required by the permit, the City submits an Annual Re- port to the Georgia Environmental Protec on Division (EPD) that documents the City’s SWMP ac vi es.
Stormwater management is also addressed through the City’s par cipa on with the Metropolitan North Georgia Water Planning District. The City is re- quired by EPD to implement the District’s Watershed Management Plan. The Watershed Management Plan provides strategies for watershed manage- ment and the control of stormwater runo and includes speci c tasks and milestones for implemen ng these strategies. The overall goal of the Water- shed Management Plan is to meet and maintain water quality standards and designated uses of streams and other waterbodies within the District.
Stormwater Ordinances:
1. Post-Development Stormwater Management (Chapter 74, Ar cle X): The ordinance de nes requirements for development to address stormwater runo quality and quan ty impacts following construc on resul ng from the permanent altera on of the land surface as well as the non-point source pollu on from land use ac vi es. The ordinance limits the peak rate of discharge to not more than 70% of the pre-developed peak rate of discharge from the property.
2. Riparian Bu er Requirements (Chapter 74, Ar cle VII): The loss of vegeta-
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