Common use of Shark River Slough Clause in Contracts

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. The long-term TP concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 (Figure 4). The 12-month flow-weighted mean TP concentration ending September 2006 was 8.7 ppb. Corresponding interim and long-term limits were 10.3 and 8.8 ppb, respectively. Table 2 presents the 12-month flow-weighted mean concentrations for each month as well as the corresponding interim and long-term TP concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in January, February and March 2007, the 12-month flow-weighted mean TP concentrations were 10.7, 10.7 and 10.8 ppb, respectively. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007. The Consent Decree stipulates that the percentage of flow-weighted mean TP concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending January, February and March 2007, the observed percentages of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were 55.0, 52.4 and 57.1 percent, respectively. The observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were lower than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events are presented in Figure 5.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2002 (Figure 43a). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2002 was 8.7 8.8 ppb. Corresponding interim and long-term limits were 10.3 9.6 and 8.8 7.9 ppb, respectively. For the nine-year period 1994 through 2002, the interim limit applicable to Shark River Slough has been met in seven times. The limit was exceeded in Water Years 2000 and 2001. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in January 2001 as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryApril, February May and March 2007June 2003, the 12-month flow-weighted mean TP total phosphorus concentrations were 10.710.1, 10.7 10.2 and 10.8 10.5 ppb, respectively. The long-April and May concentrations were less than the interim limit while the June concentration exceeded the interim limit by 0.1 ppb. The long- term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month exceeded in each of January and February 2007 and equal to the long-term limit for the month of March 2007these recent months. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- 12-month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryApril, February May and March 2007June 2003, the observed percentages percent of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.048.4, 52.4 52.9 and 57.1 percent57.9, respectively. The April, May and June observed percentage of the sampling event flow-weighted mean TP concentrations percentages were greater than 10 ppb were lower than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving average are presented in Figure 53b.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. The long-term TP concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 (Figure 4). The 12-month flow-weighted mean TP concentration ending September 2006 was 8.7 ppb. Corresponding interim and long-term limits were 10.3 and 8.8 ppb, respectively. Table 2 presents the 12-month flow-weighted mean concentrations for each month as well as the corresponding interim and long-term TP concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryJuly, February August and March 2007September 2006, the 12-month flow-weighted mean TP concentrations were 10.77.7, 10.7 8.1 and 10.8 8.7 ppb, respectively. The interim limits were 9.4, 9.9 and 10.3 ppb, respectively. The long-term limits were 10.97.6, 10.9 8.3 and 10.8 8.8 ppb, respectively. The July, August and September 2006 12-month flow-weighted mean concentration was concentrations were lower than the interim limits. The August and September 2006, 12-month flow-weighted mean concentrations were also lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007limit. The Consent Decree stipulates that the percentage of flow-weighted mean TP concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryJuly, February August and March 2007September 2006, the observed percentages of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were 55.026.3, 52.4 36.8 and 57.1 45.0 percent, respectively. The observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were higher than the guidelines from May 2005 to December 2005 and lower than the guidelines for since January and February 2007, and higher for March 2007 2006 (Table 2). The 12-month flow-weighted mean concentrations and the 12-month flow-weighted mean concentrations for individual sampling events are presented in Figure 5.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12-month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2005 (Figure 4). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2005 was 8.7 9.4 ppb. Corresponding interim and long-long- term limits were 10.3 9.4 and 8.8 7.6 ppb, respectively. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in October 2003 as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryJuly, February August and March 2007September 2005, the flow-weighted mean total phosphorus concentrations were 10.5, 9.8 and 9.4 ppb, respectively. The interim limit was 9.4 ppb for July, August and September 2005. The long-term limits were 7.7 ppb for July and 7.6 ppb for August and September. The July and August 2005 12-month flow-weighted mean TP concentrations were 10.7, 10.7 and 10.8 ppb, respectively. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower greater than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007interim limits. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryJuly, February August and March 2007September 2005, the observed percentages percentage of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.0, 52.4 47.6 and 57.1 42.9 percent, respectively. The observed percentage of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were lower less than the guideline for the entire period March 2004 to April 2005 and higher than the guidelines for January and February 2007, and higher for March 2007 from May to September 2005 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving average are presented in Figure 5.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2004 (Figure 43). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2004 was 8.7 8.4 ppb. Corresponding interim and long-term limits were 10.3 10.8 and 8.8 9.4 ppb, respectively. September 30, 2004 is the end of first water year when the Interim discharge limit became effective for Shark River Slough. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in October 2002 as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryJuly, February August and March 2007September 2004, the 12-month flow-weighted mean TP total phosphorus concentrations were 10.78.4, 8.2 and 8.4 ppb, respectively. The interim limits were 10.2, 10.7 and 10.8 ppb, respectively. The long-term limits were 10.98.8, 10.9 9.3 and 10.8 9.4 ppb, respectively. The 12-month flow-weighted mean concentration was lower July, August and September 2004 concentrations were less than the interim limits and long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007limits. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- 12-month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryJuly, February August and March 2007September 2004, the observed percentages percent of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.027.3, 52.4 28.6 and 57.1 percent35.0, respectively. The July, August and September observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb percentages were lower less than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving average are presented in Figure 54.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2002 (Figure 43a). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2002 was 8.7 8.8 ppb. Corresponding interim and long-term limits were 10.3 9.6 and 8.8 7.9 ppb, respectively. For the nine-year period 1994 through 2002, the interim limit applicable to Shark River Slough has been met in seven times. The limit was exceeded in Water Years 2000 and 2001. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in January 2001 as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryOctober, February November and March 2007December 2002, the 12-month flow-weighted mean TP concentrations were 10.7, 10.7 and 10.8 ppb, respectively. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007. The Consent Decree stipulates that the percentage of flow-weighted mean TP concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending January, February and March 2007, the observed percentages of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were 55.0, 52.4 and 57.1 percent, respectively. The observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were lower than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The 12-month flow-weighted mean concentrations and the flow-weighted mean total phosphorus concentrations for individual sampling events are presented in Figure 5.were 8.9, 9.3 and

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP concentrations for The limits apply to the water year ending September 30 are evaluated for compliance with the Consent Decree limits30. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. In addition, it is required that phosphorus concentrations be presented as 12-month moving flow-weighted means. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2001 (Figure 42a). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2001 was 8.7 15.0 ppb. Corresponding interim and long-term limits were 10.3 and 8.8 ppb, respectively. Table 2 presents the 12-month flow-weighted mean concentrations for each month as well as the corresponding interim and long-term TP concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in January, February and March 2007, the 12-month flow-weighted mean TP concentrations were 10.7, 10.7 12.2 and 10.8 ppb, respectively. The long-term This was the second consecutive year that both limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit exceeded for the month water year ending in September. Both the 2000 and 2001 water years were very dry, resulting in lower volumes of January flow with higher total phosphorus concentrations entering the Park than those observed in wetter years. Analysis of the TP concentrations in Shark River Slough by the TOC is continuing. Preliminary evaluation suggests that drought conditions, implementation of phosphorus controls and February 2007 and equal local water management are contributing factors to the long-term limit for the month of March 2007ambient concentrations. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- 12-month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryApril, February May and March 2007June 2002, the observed percentages percent of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.040.9, 52.4 43.5 and 57.1 percent40.9, respectively. The These observed percentage of the sampling event flow-weighted mean TP concentrations greater values were all less than 10 ppb were lower than the their respective guidelines for January and February 2007, and higher for March 2007 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving average are presented in Figure 52b.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2003 (Figure 43). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2003 was 8.7 10.0 ppb. Corresponding interim and long-term limits were 10.3 10.2 and 8.8 8.7 ppb, respectively. For the ten-year period 1994 through 2003, the interim limit applicable to Shark River Slough has been met eight times. The limit was exceeded in Water Years 2000 and 2001. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in July 2002 as well as the corresponding interim and long-long- term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryApril, February May and March 2007June 2004, the 12-month flow-flow- weighted mean TP total phosphorus concentrations were 10.79.0, 10.7 9.0 and 10.8 8.7 ppb, respectively. The interim limits were 9.5, 9.7 and 9.8 ppb, respectively. The long- term limits were 7.9, 8.0 and 8.2 ppb, respectively. The April, Xxx and June 2004 concentrations were less than the interim limit. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month exceeded in each of January and February 2007 and equal to the long-term limit for the month of March 2007these recent months. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- 12-month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryApril, February May and March 2007June 2004, the observed percentages percent of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.040.7, 52.4 40.7 and 57.1 percent36.0, respectively. The April , May and June observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb percentages were lower less than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving average are presented in Figure 54.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-long- term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough must be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP concentrations for The limits apply to the water year ending September 30 are evaluated for compliance with the Consent Decree limits30. The long-long- term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, to March 1, 1979, and is adjusted for variations in flow. In addition, the Settlement Agreement requires that phosphorus concentrations be presented as 12-month moving flow-weighted means. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 1989 to 2006 2000 (Figure 42a). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2000 was 8.7 10.0 ppb. Corresponding interim and long-long- term limits were 10.3 9.4 and 8.8 7.6 ppb, respectively. Table 2 presents This is the 12-month flow-weighted mean concentrations for each month as well as the corresponding interim and long-term TP concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data first time since 1993 that both limits were used exceeded for the calculations. For the 12-month periods water year ending in January, February and March 2007, the 12-month flow-weighted mean TP concentrations were 10.7, 10.7 and 10.8 ppb, respectivelySeptember. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007. The Consent Decree Settlement Agreement stipulates that the percentage percent of flow-flow- weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- 12-month period must not exceed a guideline maximum value based on flow into Shark River Slough for the same 12-month periodperiod (Figure 2b). For the 12-month periods ending JanuaryApril, February May and March 2007June 2001, the observed percentages percent of the sampling event flow-flow- weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.0was 84.6, 52.4 81.8 and 57.1 percent80.0, respectively. The observed percentage of These percentages exceeded the sampling event allowed percentages for all three 12-month periods (see Table 2). Table 2 presents the moving flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were lower than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The each 12-month period from July 1998 through June 2001, as well as the corresponding interim and long-term total phosphorus concentration limits, which are calculated using the 12-month period flow. For the 12-month periods ending in April, May and June 2001, the total phosphorus concentrations were 15.8, 13.7 and 12.8, respectively. These concentrations were all greater than the long-term limits for these respective months, whereas only the June concentration was less than the interim limit. A 20 Flow-weighted mean concentration Interim discharge limit Long-term discharge limit 15 5 0 Water Year 60 B 50 40 30 20 10 0 12-month moving average Sampling event composite concentrations 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 Jul-01 Jun-01 May-01 Apr-01 Mar-01 Feb-01 Jan-01 Dec-00 Nov-00 Oct-00 Sep-00 Aug-00 Jul-00 Jun-00 May-00 Apr-00 Mar-00 Feb-00 Jan-00 1990 1989 Total Phosphorus (ppb) Figure 2. 12-month moving flow-weighted mean total phosphorus concentrations at the inflows to the Everglades National Park (ENP) through Shark River Slough compared to the interim and long-term targets. a. Concentration at the end of each water year. b. 12-month moving average concentration at the end of each month and the flowcomposite concentration for each sampling event. Table 2. Shark River Slough Total Phosphorus Concentration Compliance Tracking. 12-Month Period Ending On Total Period Flow (Kac-ft) Flow Weighted Mean Total Phosphorus (ppb) Limits (ppb) Percent of Samples Greater Than 10 ppb (%) Interim Long Term Observed Allowed 7/31/99 788.4 9.7 10.4 9.0 41.7 46.7 8/31/99 857.6 9.6 10.1 8.6 39.1 44.9 9/30/99 939.9 9.5 9.8 8.2 39.1 42.9 10/31/99 1084.4 9.4 9.4 7.6 39.1 40.1 11/30/99 1297.5 9.1 9.4 7.6 39.1 40.1 12/31/99 1344.8 9.4 9.4 7.6 39.1 40.1 1/31/00 1395.1 9.4 9.4 7.6 39.1 40.1 2/29/00 1415.5 9.4 9.4 7.6 41.7 40.1 3/31/00 1385.7 9.6 9.4 7.6 52.2 40.1 4/30/00 1385.1 9.1 9.4 7.6 52.2 40.1 5/31/00 1401.5 9.6 9.4 7.6 57.7 40.1 6/30/00 1395.9 9.8 9.4 7.6 60.7 40.1 7/31/00 1294.6 9.8 9.4 7.6 64.3 40.1 8/31/00 1215 9.8 9.4 7.6 65.5 40.1 9/30/00 1096 10.0 9.4 7.6 69.0 40.1 10/31/00 925 10.3 9.9 8.3 72.4 43.2 11/30/00 642 11.7 11.1 9.8 79.3 50.8 12/31/00 464 12.7 12.0 10.8 82.8 56.4 1/31/01 367 13.5 12.5 11.3 80.0 59.8 2/28/01 298 15.5 12.9 11.7 85.7 62.2 3/31/01 276 15.6 13.0 11.9 84.6 63.1 4/30/01 250 15.8 13.2 12.0 84.6 64.0 5/31/01 231 13.7 13.3 12.1 81.8 64.7 6/30/01 221 12.8 13.3 12.2 80.0 65.1 Note: Italicized values exceeded allowed percentage The daily mean flows through the individual Shark River Slough structures and S334 from January 1999 through June 2001 are presented in Figure 3a. From April 1 through June 30, 2001, flows into northeastern Shark River Slough occurred only through S333 from April 9 to April 23 and only through S333 and S12D from June 13 to June 26. The total quarterly flows through S333 were 2839 acre-feet (1431 cfs) and through S12D 666 acre-feet (336 cfs). The relationship between the sum of the daily mean flows at Shark River Slough structures and the corresponding flow- weighted mean total phosphorus concentrations for individual sampling events are is presented in Figure 53b. Only three composite samples were collected at Shark River Slough structures from April through June with the following results: Date Total Phosphorus (fwmc ppb) Flow (daily cfs) 4/9/01 19 25 4/23/01 25 28 6/18/01 23.5 67 8000 A 6000 4000 2000 0 8000 B 50 Flow FWMC Phosphorus 40 6000 30 4000 20 2000 10 0 0 S12A S12B S12C S12D S333 S334 05/01/2001 03/01/2001 01/01/2001 11/01/2000 09/01/2000 07/01/2000 05/01/2000 03/01/2000 01/01/2000 11/01/1999 09/01/1999 07/01/1999 05/01/1999 03/01/1999 01/01/1999 05/01/2001 03/01/2001 01/01/2001 11/01/2000 09/01/2000 07/01/2000 05/01/2000 03/01/2000 01/01/2000 11/01/1999 09/01/1999 07/01/1999 05/01/1999 03/01/1999 01/01/1999 Sum of Mean Daily Flow (cfs) Mean Daily Flow (cfs) Flow-Weighted Mean Total Phosphorus Concentration (ppb) Figure 3. a. Mean daily flows into Shark River Slough by structure. b. The relationship between sum of mean daily flow at Shark River Slough structures and flow- weighted mean total phosphorus concentration for individual sampling events.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2004 (Figure 43). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2004 was 8.7 8.4 ppb. Corresponding interim and long-term limits were 10.3 10.8 and 8.8 9.4 ppb, respectively. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in July 2003 as well as the corresponding interim and long-long- term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryApril, February May and March 2007June 2005, the 12-month flow-flow- weighted mean TP total phosphorus concentrations were 9.5, 10.3 and 10.4 ppb, respectively. The interim limits were 10.7, 10.7 10.5 and 10.8 10.2 ppb, respectively. The long-term limits were 10.99.2, 10.9 9.1 and 10.8 8.7 ppb, respectively. The 12-month flow-weighted mean April and May 2005 concentrations were less than the interim limits, and the June 2005 concentration was lower than above the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007interim limit. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryApril, February May and March 2007June 2005, the observed percentages percent of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.046.7, 52.4 50.0 and 57.1 percent52.9, respectively. The observed percentage of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were lower less than the guideline for the month of April 2005 and higher than the guidelines for January May and February 2007, and higher for March 2007 June 2005 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving average are presented in Figure 54.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP total phosphorus concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2005 (Figure 4). The 12-month flow-flow- weighted mean TP total phosphorus concentration ending September 2006 2005 was 8.7 9.4 ppb. Corresponding interim and long-term limits were 10.3 9.4 and 8.8 7.6 ppb, respectively. Table 2 presents the 12-month flow-weighted mean concentrations for each month as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- bi-weekly compliance monitoring grab concentration data were used for the calculations. For each of the 12-month periods ending in January, February and March 20072006, the 12-month flow-weighted mean TP concentrations were 10.7, 10.7 and 10.8 total phosphorus concentration was 9.0 ppb, respectively. The interim limit was 9.4 ppb and the long-term limits were 10.9, 10.9 and 10.8 ppb, respectivelylimit was 7.6 ppb during this period. The January, February and March 2006 12-month flow-weighted mean concentration was concentrations were lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007interim limits. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- 12-month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending January, February and March 20072006, the observed percentages percentage of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.039.1, 52.4 39.1 and 57.1 34.8 percent, respectively. The observed percentage of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb had been less than the guideline since March 2004. The values were higher from May 2005 to December 2005 but lower than the guidelines for January and February 2007, and higher for March 2007 during this reporting period (Table 2). The 12-month individual sampling events flow-weighted mean concentrations and the flow12-month flow- weighted mean concentrations for individual sampling events are presented in Figure 5.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2003 (Figure 43A). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2003 was 8.7 9.2 ppb. Corresponding interim and long-term limits were 10.3 9.4 and 8.8 7.6 ppb, respectively. For the ten-year period 1994 through 2003, the interim limit applicable to Shark River Slough has been met eight times. The limit was exceeded in Water Years 2000 and 2001. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in October 2001 as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryOctober, February November and March 2007December 2003, the 12-month flow-weighted mean TP concentrations were 10.7, 10.7 and 10.8 ppb, respectively. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007. The Consent Decree stipulates that the percentage of flow-weighted mean TP concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending January, February and March 2007, the observed percentages of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were 55.0, 52.4 and 57.1 percent, respectively. The observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were lower than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The 12-month flow-weighted mean concentrations and the flow-weighted mean total phosphorus concentrations for individual sampling events are presented in Figure 5.were 9.7, 9.5 and

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP concentrations for The limits apply to the water year ending September 30 are evaluated for compliance with the Consent Decree limits30. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. In addition, it is required that phosphorus concentrations be presented as 12-month moving flow-weighted means. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2002 (Figure 43a). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2002 was 8.7 8.8 ppb. Corresponding interim and long-term limits were 10.3 9.6 and 8.8 7.9 ppb, respectively. This was the first year since 1999 that the interim limit was not exceeded for the water year ending on September 30. This return to lower concentrations observed in the mid-1990s corresponds with increasing flow into Shark River Slough. Both the interim and long-term limits have not been met in the same year since 1997. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in October 2000, as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in JanuaryJuly, February August and March 2007September 2002, the 12-month flow-weighted mean TP total phosphorus concentrations were 10.710.9, 10.7 9.1 and 10.8 8.8 ppb, respectively. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- 12-month period must should not exceed a calculated guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending JanuaryJuly, February August and March 2007September 2002, the observed percentages percent of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.045.8, 52.4 39.1 and 57.1 percent30.4, respectively. The July observed percentage of the sampling event flow-weighted mean TP concentrations was greater than 10 ppb the guideline, but the August and September percentages were lower than the their respective guidelines for January and February 2007, and higher for March 2007 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving averages are presented in Figure 53b.

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, 1978 to March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2002 (Figure 43a). The 12-12- month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2002 was 8.7 8.8 ppb. Corresponding interim and long-term limits were 10.3 9.6 and 8.8 7.9 ppb, respectively. For the nine-year period 1994 through 2002, the interim limit applicable to Shark River Slough has been met seven times. The limit was exceeded in Water Years 2000 and 2001. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in April 2001 as well as the corresponding interim and long-term TP total phosphorus concentration limits, calculated using the 12-12- month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-12- month periods ending in January, February and March 20072003, the 12-month flow-weighted mean TP concentrations were 10.7, 10.7 and 10.8 ppb, respectively. The long-term limits were 10.9, 10.9 and 10.8 ppb, respectively. The 12-month flow-weighted mean concentration was lower than the long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of March 2007. The Consent Decree stipulates that the percentage of flow-weighted mean TP concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending January, February and March 2007, the observed percentages of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were 55.0, 52.4 and 57.1 percent, respectively. The observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb were lower than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The 12-month flow-weighted mean concentrations and the flow-weighted mean total phosphorus concentrations for individual sampling events are presented in Figure 5.were 9.4, 9.7 and

Shark River Slough. The Consent Decree of 1995 specified that interim and long-term total phosphorus (TP) concentration limits for discharges into the Everglades National Park (ENP) (Figure 3) through Shark River Slough be met by October 1, 2003, and December 31, 2006, respectively. It was specified that the TP concentrations be presented as 12-month flow-weighted means. Only the TP total phosphorus concentrations for the water year ending September 30 are evaluated for compliance with the Consent Decree limits. It was also specified that the total phosphorus concentrations be presented as 12- month moving flow-weighted means. The long-term TP total phosphorus concentration limit for inflows to Shark River Slough through structures S12A, S12B, S12C, S12D S12D, and S333 represents the concentrations delivered during the Outstanding Florida Waters baseline period of March 1, 1978, to 1978 through March 1, 1979, and is adjusted for variations in flow. Inflow concentrations of TP total phosphorus through Shark River Slough are compared to the interim and long-term limits at the end of each water year (October 1st through September 30th) from 1991 to 2006 2004 (Figure 43). The 12-month moving flow-weighted mean TP total phosphorus concentration ending September 2006 2004 was 8.7 8.4 ppb. Corresponding interim and long-term limits were 10.3 10.8 and 8.8 9.4 ppb, respectively. September 30, 2004 was the end of first water year when the Interim discharge limit became effective for the Shark River Slough. Table 2 presents the 12-month moving flow-weighted mean concentrations for each 12- month period beginning in July 2002 as well as the corresponding interim and long-long- term TP total phosphorus concentration limits, calculated using the 12-month period flow. Only the bi- weekly compliance monitoring grab concentration data were used for the calculations. For the 12-month periods ending in January, February and March 20072005, the 12-month flow-weighted mean TP total phosphorus concentrations were 9.0, 9.1 and 9.6 ppb, respectively. The interim limits were 10.7, 10.7 10.8 and 10.8 ppb, respectively. The long-term limits were 10.99.3, 10.9 9.4 and 10.8 9.4 ppb, respectively. The 12-month flow-weighted mean concentration was lower January, February and March 2005 concentrations were less than the interim limit. The long-term limit for the month of January and February 2007 and equal to the long-term limit for the month of was exceeded in March 20072005. The Consent Decree stipulates that the percentage percent of flow-weighted mean TP total phosphorus concentrations greater than 10 ppb from each sampling event in any 12- month period must not exceed a guideline value based on flow into Shark River Slough for the same 12-month period. For the 12-month periods ending January, February and March 20072005, the observed percentages percent of the sampling event flow-weighted mean TP total phosphorus concentrations greater than 10 ppb were 55.038.9, 52.4 37.5 and 57.1 percent46.7, respectively. The January, February and March observed percentage of the sampling event flow-weighted mean TP concentrations greater than 10 ppb percentages were lower less than the guidelines for January and February 2007, and higher for March 2007 (Table 2). The individual sampling events and the 12-month flow-weighted mean concentrations and the flow-weighted mean concentrations for individual sampling events moving average are presented in Figure 54.