AlfredBlueMarianna_nuttmdl_Final_Aug2018
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AlfredBlueMarianna_nuttmdl_Final_Aug2018
Southwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL) AlfredBlueMarianna_nuttmdl_Final_Aug2018)and Documentation in Support of the Development of Site-Specific Numeric Interpretationsof the Narrative Nutrient CriterionKveongsik Rhew Division of Environmental Assessment and Restoration Florida Department of Environmental Protection433132600 Blair Stone Road Mail Station 3000 Tallahassee, FL 3 AlfredBlueMarianna_nuttmdl_Final_Aug20182399-2400 floridadep.govExecutive SummaryLake Alfred is located in the City of Lake Alfred, in Polk County; Lake Marianna, in the City of Auburndale,AlfredBlueMarianna_nuttmdl_Final_Aug2018
in Polk County; and Lake Blue, in unincorporated Polk County. Initially, the waterbodies were identified as impaired for nutrients based on an elevateSouthwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL) AlfredBlueMarianna_nuttmdl_Final_Aug2018ification (WBID) numbers 148SD for Lake Alfred. 152IL for Lake Marianna, and 152IQ for Lake Blue. Based on amended IWR (Rule 62-302.531, F. A.C.). these waterbodies were re-assessed using numeric nutrient criteria and added to the Verified List of Impaired Waters by Secretarial Order in October 2016 AlfredBlueMarianna_nuttmdl_Final_Aug2018. Total maximum daily loads (TMDLs) for total nitrogen (TN) and or total phosphorus (TP) have been developed, and Table EX-1 lists supporting informatAlfredBlueMarianna_nuttmdl_Final_Aug2018
ion for the TMDLs. The TMDLs were developed in accordance with Section 303(d) of the federal Clean Water Act and guidance developed by the U.S. EnviroSouthwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL) AlfredBlueMarianna_nuttmdl_Final_Aug2018Paragraph 62-302.530) 90 )(b). Florida Administrative Code (F.A.C.). that will replace the otherwise applicable numeric nutrient criteria (NNC) for these waterbodies as described in Subsection 62-302.531(2), F.A.C.”Page 2 of 76Table EX-1. Summary of TMDL supporting information for Lake Alfred. I.ake AlfredBlueMarianna_nuttmdl_Final_Aug2018 Blue, and Lake MariannaTv pc ufliifonnatiunDescriptionWaterbody name/ WBID numberLake Alfred AVB ID 148 SD Lake Marianna WDID 152 IL l ake Blue WB1I)AlfredBlueMarianna_nuttmdl_Final_Aug2018
1521QHydrologic Unit C ode (IIUC) 83100101Use classification Waterbody designationClass III/FreshwaterTargeted beneficial usesFish consumption; recreSouthwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL) AlfredBlueMarianna_nuttmdl_Final_Aug2018 Impaired Waters for the Ciroup .3 basins (Sarasola-Eeace-Myakka) adopted via Secretarial Order dated January 2010.1 MDI. pollutantsIN and IETMDLs and site-specific interpretations of the narrative nutrient criterionWBID I488D: Chlorophyll a: 20 micrograms per liter (pg 1.). expressed as an annual g AlfredBlueMarianna_nuttmdl_Final_Aug2018eometric mean (AGM) concentration not to be exceeded more than once in any consecutive 3-year period. I N: 1.69 milligrams per liter (mg'L), expressedAlfredBlueMarianna_nuttmdl_Final_Aug2018
as an AGM lake concentration not to he exceeded in any year. TP: 0.03 mg L. expressed as an AGM lake concentration not to be exceeded in any year. WBSouthwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL) AlfredBlueMarianna_nuttmdl_Final_Aug2018. expressed as an AGM lake concentration not to be exceeded m any year. TP: 0.03 mg L. expressed as an AGM lake concentration not to be exceeded in any year. WBID 1521Q: Chlorophyll a: 20 pg'L. expressed as an AGM concentration not to be exceeded more titan once in any consecutive 3-year period. TN: AlfredBlueMarianna_nuttmdl_Final_Aug2018 1.16 mg L. expressed as an AGM lake concentration not to be exceeded in any year. 1 P: 0.03 mg 1- expressed as an AGM lake concentration not lo be exAlfredBlueMarianna_nuttmdl_Final_Aug2018
ceeded in any year.Load reductions required to meet the 1 Ml)).sw BID 14881): A 16 % 1N reduction and a 0% ì E reduction Io achieve a chlorophyll Í/ tSouthwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL) AlfredBlueMarianna_nuttmdl_Final_Aug2018ction and a 67 % IE reduction to achieve a chlorophyll Cl target of 20 tig LPage .Ì of “6AcknowledgmentsThis analysis was accomplished thanks to significant contributions from staff in the Florida Department of Environmental Protection (DEP) Division of Environmental Assessment and Restoration—speci AlfredBlueMarianna_nuttmdl_Final_Aug2018fically, the office of Watershed Sen ices. Watershed Assessment Section. Standards Development Section. Water Quality Restoration Program, Southwest DAlfredBlueMarianna_nuttmdl_Final_Aug2018
istrict Office, and Watershed Evaluation and TMDL Section. DEP also recognizes the City of Lake Alfred, the City of Auburndale, and Polk County NaturaSouthwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL) AlfredBlueMarianna_nuttmdl_Final_Aug2018ake Blue watersheds.Editorial assistance was provided by Erin Rasnake, Ansel Bubel, Kenneth Weaver, Endia Casley. Katherine Britt. Garry Payne. Kevin O'Donnell, and Linda Lord.Map production assistance was provided by Ronald Hughes.For additional information regarding the development of this report, AlfredBlueMarianna_nuttmdl_Final_Aug2018 please contact the Division of Environmental Assessment and Restoration office:2600 Blair Stone RoadMail Station 3000 Tallahassee, FL 32399-2400 PhonAlfredBlueMarianna_nuttmdl_Final_Aug2018
e: (850) 245-8668Page 4 of 76ContentsExecutive Summary 2Acknowledgments 4Chapter 1: Introduction 10Southwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL)Southwest District • Peace River BasinFinal ReportNutrient TMDLs for Lake Alfred (WBID 1488D), Lake Blue (WBID 152 IQ), and Lake Marianna (WBID 152IL)Gọi ngay
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