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PROOF OF CONCEPTS ADDENDUM TO GILIO’S GENERAL PUBLIC PLAN G FOR FULL EVERGLADES RESTORATION 4.SUBMERGENT AQUATIC VEGETATION AS A LAKE REJUVENATION PLAN G. ELEMENT 2. IS THERE ANY PROOF THAT DEMUCKING WILL WORK ? ST. LUCIE WEST SERVICES DISTRICT’S (SLW) a 298 DISTRICT EXTENSIVE MULTILAKE MAN-MADE SYSTEM COMPARED TO LAKE OKEECHOBEE (L.O.) SIMILARITIES : IN DEPTH, LITTORAL ZONES, POLLUTANT INFLOWS TO LAKE OKEECHOBEE DIFFERENCES – #1. L.O. HAS MUCH MORE SEDIMENT MUD ( ~ 6000 YRS.) VS SLW 25 YRS. #2. L.O. STAGES VARY GREATLY VS SLW FAIRLY CONSTANT. #3. SLW GREATER PLANT COVER OUTFLOWS OF EXCESS WATER- SLW –ABOUT 40 PPB TP VS. L.O. - 140 TO 75 PPB TP HENCE: DEMUCK L.OKEECHOBEE LEADS TO LAKES. SIMILAR TO SLW IN WATER QUALITY FROM NATIVE PLANT GROWTH. THIS IS AN ESSENTIAL WATER QUALITY MECHANISM AS NATURE INTENDED. MONTHLY PPB TP DISCHARGES IN ALL ST. LUCIE WEST(SLW) LAKES WITH UNDERWATER PLANTS FROM J. GILIO MANUSCRIPT IN PREP. DATA USED WITH PERMISSION ST. LUCIE WEST SERVICES DISTRICT PPB TP PPB TP Hypereutrophic LAKE OKEECHOBEE 180 ST. LUCIE WEST 67 Hypereutrophic >100 Eutrophic 30-100 Mesotrophic 10 -30 oligotrophic < 10 EPA/FDEP LIMIT INTO ENP @10 NOTE. DETECTION LIMIT ANALYSIS TP SLW = 40 PPB. THUS 67 REALLY ~40—50. SLW LAKES HYDROGEOMORPHICALLY SIMILAR TO LO. MEAN DEPTH 8 FT., SAV’S, EAV’S SIMILAR, HIGH NUTRIENT INPUTS (7,500 HOMES @ 0.75 LBS./1000 SQ.FT. FERTILIZER/ YR APPLIED. DIFFERENCES – SLW LAKES POLYMICTIC TO DIMICTIC, LOWER FETCH, YOUNGER, LESS ANOXIC AREA. Element 3. SUCK THE MUCK FROM LAKE OKEECHOBEE Approximately 100 MILLION METRIC TONS (220,000,000 LBS.) PHOTO SOURCES SFWMD, CALCULATION BY J. GILIO MUCK DEPTH AVERAGES 30 CM TP AVERAGES ABOUT 1200 PPM 16. ELEMENT 2. DEMUCK LAKE OKEECHOBEE ANNUAL WATER INFLOW , TP INFLOW AND TDML GOAL [1974-2013] TOP LEFT GRAPH SHOWS NON-ATTAIMENT OF TDML OF TOTAL PHOSPHORUS OVER A 40 YR. SPAN. BOTTOM RIGHT GRAPH DENOTES AN HISTORICAL INCREASE OF TP IN LAKE OKEECHOBEE LEGACY SEDIMENT. Modified from sfwmd. TOP ELEMENT 3. muck removal conclusion MUCK REMOVAL FROM LAKE OKEECHOBEE &/OR LIMITED ALUM TREATMENT • ADVANTAGES TO REDUCE TP LEVELS 1st SERIAL TREATMENT TRAIN (STT) IS FULL KISSIMMEE RIVER RESTORATION TO DATE A 5 YR. TP REDUCTION ~ 40% @ HIGH VARIANCE. • • • • • • • MAJOR IMPROVEMENT IN-LAKE WATER QUALITY LEAVING LAKE @ SPILLWAY/WEIR FROM ~120 to 80 PPB TP (2014) TO ~ 40 PPB TP. (2ND STT) ~ 70 to 50% POLLUTANT REMOVAL • • ADVANTAGES TO LAKE OKEECHOBEE ECOLOGY IMPROVED LAKE WQ AS LAKE REJUVENATION INCREASED WATER TRANSPARENCYDEEPER DEPTH SAV’S & EPIPHYTES -> TP UPTAKE. INCREASED FISH HABITAT AREA, RECREATIONAL USE. REDUCED POLLUTANT LOADS IN WATER--LESS TOXIC ALGAE BLOOMS. • • RECYCLE & JOB ADVANTAGES POTENTIAL RESOURCE RECOVERY OF DRIED MUCK AS TOPSOIL (SOD FARMS, ETC.) AS NEW INDUSTRY. 3RD STT IS 23,000 AC. TREATMENT WETLAND. TP REDUCTION ~ 40% FROM 50 TO 30 PPB TP • • 4TH STT IS BOLLES LAKE TO BE CONSTRUCTED SIMILAR TO LAKES @ ST. LUCIE WEST BUT WITHOUT ADDED FERTILIZER. POSSIBLE THAT ~INFLOW @ 30 TO OUTFLOW AT 25 PPB TP. 5TH STT IS OVERFLOW INTO 32,000 AC. TREATMENT WETLAND. EXPECTED DECREASE FROM 25 TO 15 PPBTP INTO CEPP’S FEB A/B. IF 15 PPB TP ACHIEVEABLE AND SUSTAINED, THEN NATURAL HYDROPERIODICITY FLOW MAY BE BETTER THAN STA’S & FEB’S TO INCREASE VOLUME HENCE POSSIBLY REMOVED. REDUCED SUSPENDED SOLIDS IN FUTURE DISCHARGES, EAST, WEST & SOUTH. CRITICAL ASSUMPTIONS # 1.STA TREATMENT RESULTS IN STA ¾ ACHIEVED 14 PPB TP [ANNUAL GEOMETRIC MEAN]CHEN, ET AL., 2013 AND THAT LONGER RESIDENCE TIME, LOWER TP LOADING RATE AND LOWER INPUT CONCENTRATION WILL REACH THE 10 PPB LEVEL. # 2.REMOVED MUCK DRIED AND FINAL DEPOSITION ALL OUTSIDE OF HYDROLOGICAL PLAN 6X FLOW WAY. • • MAJOR QUESTION TP IN L.O. REMAINS PROBLEMATIC AND SUBJECT TO EXTERNAL STRESSORS SUCH AS TP INFLOWS >TMDL AND RESUSPENSION OF LEGACY SEDIMENT TP. • • • • DISADVANTAGES LONG TERM ~ 20 YRS. COSTS BETWEEN $1 TO $3 BILLION. LOCALIZED TEMPORARY SEDIMENT DISTURBANCE. 19.