Piney Point Closure Progress and Status Update John A. Coates, P.E. Division of Water Resource Management Dept. of Environmental Protection March 9, 2006 March 9, 2006 1 January 18, 2002 Piney Point Phosphogypsum Stacks w/ Tampa Bay in Background December 2002 March 9, 2006 3 Heavy Rains - December 2002 March 9, 2006 4 PINEY POINT GYPSUM STACK CLOSURE 2006 2008/9 2004 NORTH COOLING POND OR DAP POND (NCP) 2007 SOUTH COOLING POND NORTH COMPARTMENT (SCP-N) 2006 SOUTH COOLING POND SOUTH COMPARTMENT (SCP-S) 2005 2004 2004 OLD GYPSUM STACK-NORTH (OGS-N) 2006 NEW GYPSUM STACK-NORTH (NGS-N) 2005 NEW GYPSUM STACK-SOUTH (NGS-S) OLD GYPSUM STACK-SOUTH (OGS-S) 2005 March 9, 2006 5 April 2004 March 9, 2006 6 September 2004 Piney Point Closure Progress w/ liner installed in OGS November 2004 March 9, 2006 8 April 14, 2005 March 9, 2006 9 August/September 2005 March 9, 2006 10 STORAGE CAPACITY IN STACK COMPARTMENTS Compartment Lined Reservoir Original Capacity, MGal Capacity, MGal NGS-N 125 270 OGS-S 110 155 OGS-N 145 240 NGS-S 300 640 680 1,305 TOTAL March 9, 2006 11 January 6, 2006 March 9, 2006 12 January 10, 2006 March 9, 2006 13 February 7, 2006 March 9, 2006 14 March 7, 2006 March 9, 2006 15 PINEY POINT GYPSUM STACK CLOSURE Current Status USE LINED NGS-N TO STORE PROCESS WATER FROM OGS NORTH COOLING POND OR DAP POND (NCP) SOUTH COOLING POND NORTH COMPARTMENT (SCP-N) NEW GYPSUM STACK-NORTH (NGS-N) OLD GYPSUM STACK-NORTH (OGS-N) NEW GYPSUM STACK-SOUTH (NGS-S) OLD GYPSUM STACK-SOUTH (OGS-S) SOUTH COOLING POND SOUTH COMPARTMENT (SCP-S) March 9, 2006 16 Inches of Rainfall Runoff Nominal Storage Capacity March 9, 2006 03 /03 /03 /03 /03 /03 /04 /04 /04 /04 /04 /04 /05 /05 /05 /05 /05 /05 /06 / 01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 /01 / 01 03 05 07 09 11 01 03 05 07 09 11 01 03 05 07 09 11 01 120 110 100 90 80 70 60 50 40 30 20 10 0 17 Process Water Consumption R. Osmosis Treatment Double Lime Treatment Spray Evaporation Total Consumption 15,000,000 10,000,000 5,000,000 0 01 /0 1/ 04 03 /0 1/ 04 05 /0 1/ 04 07 /0 1/ 04 09 /0 1/ 04 11 /0 1/ 04 01 /0 1/ 05 03 /0 1/ 05 05 /0 1/ 05 07 /0 1/ 05 09 /0 1/ 05 11 /0 1/ 05 01 /0 1/ 06 Gallons per Week 20,000,000 March 9, 2006 18 Process Water Status Rainfall, etc. ? Total 2,000 1,500 Process 1,000 Water, MGal 500 0 Consumption to Date, Mgals March 9, 2006 Process Water Inventory, Mgals 19 Piney Point Status Average Ammonia-Nitrogen Loading - Since January 2004 300 250 Target loading, lbs/day 15-day Average NH3-N loading, lbs/day 30-day Average NH3-N loading, lbs/day 200 150 100 50 0 4 4 4 4 4 4 5 5 5 5 5 5 4 4 5 5 5 5 6 6 4 4 -0 b-0 r-04pr-0 y-0 n-0 ul-0 g-0 p-0 ct-04 v-0 c-0 n-0 b-0 r-05pr-0 y-0 n-0 ul-0 g-0 p-0 ct-05 v-0 c -0 n-0 b-0 n Ja Fe Ma A Ma Ju J Au Se O No De Ja Fe Ma A Ma Ju J Au Se O No De Ja Fe March 9, 2006 20 Piney Point Next Steps ( Current Status) O & M / Water Consumption Closure Construction - 2005 Closure Construction - 2006 Continued Focus – Keep final closure work on schedule to eliminate discharges to 003, except for possible RO. (March 31, 2007) • • • • • • • • • Usage of expanded Spray Evaporation systems for w ater consumption Continue to maintain low levels of nutrient loading from 003 Final Reservoir ( NGS-S - done) Lining of Cap Areas ( done - now grassed) Amendment and Grassing for Phase I side slopes ( Jan. 2006 - done ) Construction of Phase I collection ditches ( early/ mid 2006 - ongoing) Closure of South Compartment - SCP ( start Jan. 2006 - dew atering) Phase I I Slope Closures, East & North sides of NGS ( started Feb. 2006 ) Start North Compartment of SCP ( prep w ork at end of 2006) March 9, 2006 21 END QUESTIONS? March 9, 2006 22