Master Plan Development - City of Boca Raton

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City of Boca Raton Regulatory Information SummaryTotal Maximum Daily Load Allocation ProgramThe Rule defines procedures and requirements for the determination of impairment or non-impairmentunder each of these categories, as well as specifics regarding data integrity, data set composition, andminimum exceedence thresholds for inclusion in either list. See the previous discussion on Water QualityMonitoring for more information about data collection efforts related to Palm Beach County’s MS4NPDES co-permittees.Current Status of Palm Beach County BasinsWater bodies in Palm Beach County are contained within Groups 1-3.The Lake Okeechobee Basin is in Group 1, currently in Phase 4 with an adopted TMDL for phosphorus.A draft TMDL has been posted for the Oklawaha River Basin in this Group.Group 2 is in the third phase of the basin group rotation cycle and a Verified List of Impaired Waters hasbeen developed. FDEP has posted final TMDLs for Group 2 waters in the Tampa Bay Basin and some ofits major tributaries in the Alafia, Manatee River, and Hillsborough River Basins, as well as one finalTMDL for the Apalachicola Basin. Draft TMDL documents for Group 2 waters have been posted for theUpper, Middle and Lower St. Johns River Basins. The St. Lucie/Loxahatchee Basin extending into thenorthern portion of Palm Beach County is in Group 2. No TMDLs have been adopted for the St. Lucie/Loxahatchee Basin.Waters in proximity to Boca Raton are included in the Palm Beach Coast/ Lake Worth Lagoon Basin inGroup 3. Waters included on the Verified List of Impaired Waters (per GIS coverage provided on theFDEP website dated May 17, 2007 and downloaded on August 1, 2007) for the Lake Worth Lagoon/PalmBeach Coast Watershed are shown in Table 4. The parameters of concern (impairments) for Group 3waters in Palm Beach County are primarily copper and dissolved oxygen linked to excessive nutrients.Group 3 is also currently in Phase 3. Final TMDL documents for the waters connecting to the BocaRaton municipal stormwater system, i.e. the E-4 and E-3 Canals, as well as for the Intracoastal waterway,are projected for 2010. Final TMDL documents have only been posted for Group 3 waters in the SarasotaBay/Peace River/Myakka River Basin to date, but draft documents are available for waters in theCaloosahatchee River Basin, the Choctawhatchee-St. Andrew Basin, the Sarasota Bay Basin, and theUpper Peace River Basin.Draft TMDL documents have also been posted for Group 4 waters in the Nassau/St. Mary's Basin and theSoutheast Coast/Biscayne Bay Basin.L:\boca\bocaswmp\A6016.02\Final Task 2 Report - 1-07-08\r01acjh.docPage 20MOCK•ROOS
City of Boca Raton Regulatory Information SummaryTotal Maximum Daily Load Allocation ProgramWBIDTable 4Group 3 Verified Impaired Waters in the Palm Beach Coast / Lake Worth Lagoon BasinPlanningUnit Waterbody Parameters PriorityProjected Yearfor TMDLDevelopmentConcentration3226F Intracoastal ICCW AB POMPANO COPPER MEDIUM 2010 > 3.7 mg/L3226F2 Intracoastal LAKE WORTH LAGOON SOUTH SEG COPPER MEDIUM 2010 > 3.7 mg/L8096B Intracoastal HILLSBORO INLET PARK NUTRIENTS MEDIUM 2010 Median TN3233 L-8 L-8 DISSOLVED HIGH 20053262D C-15 E-3 CANAL DISSOLVED MEDIUM 2010 < 5.0 mg/L3245 C-51 C-51 DISSOLVED MEDIUM 2010 < 5.0 mg/LHillsboro3264D Canal E-4 CANAL NUTRIENTS MEDIUM 2010 Median TN3242A C-17 PB STATIONS/D CANALS DISSOLVED MEDIUM 2010 < 5.0 mg/L3245B C-51 LAKE CLARKE DISSOLVED MEDIUM 2010 < 5.0 mg/L3262A C-15 LAKE IDA NUTRIENTS MEDIUM 2010 Median TNA map of Palm Beach County showing the MS4 NPDES watershed delineations and the boundaries of theGroup 3 Impaired Waters from the Verified List (per GIS coverage provided on the FDEP website datedMay 17, 2007 and downloaded on August 1, 2007) is provided as Figure 2.Assessments of incoming water quality data to verify or dismiss findings of impairment are ongoing forGroup 3 waters. The Verified List is periodically revised to reflect changes to the status of water bodiesbased on new modeling analyses as FDEP continues to evaluate additional information. As more of theseassessments will occur prior to the 2010 TMDL development, this list of impaired waters is subject to change.Additional InformationRule 62-303, F.A.C also outlines procedures for removal of a waterbody from the Planning or VerifiedLists, and requirements for any scientific evidence used to do so. These requirements vary among thecategories of assessment listed above, and are not necessarily the same for removal of a segment fromeither the Planning or Verified List. Some of the major reasons given for delisting (or not verifying) awaterbody segment are:ooooooInsufficient dataImproperly sampled, analyzed, or reported data valuesChanges in FDEP’s program or procedure which, following a reassessment, lead tothe conclusion that the waterbody is not impairedSubsequent statistical assessments of data demonstrating that the minimumexceedence threshold for listing is no longer being metSignificant scientific evidence that the designated use is being metConstruction or installation of BMPs or other pollution reduction technologies provides areasonable assurance that the designated use will be met or that the minimum exceedencethreshold for listing will not be met, as accepted by FDEPL:\boca\bocaswmp\A6016.02\Final Task 2 Report - 1-07-08\r01acjh.docPage 21MOCK•ROOS
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Appendix ATask 1 - Existing Conditi
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APPENDIX ASCOPE OF SERVICES
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Impervious AreaWater Quality Volume
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Task 1 Deliverables - The CONSULTAN
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Task 2 Deliverable - The CONSULTANT
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Master Plan Development - City of Boca Raton

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