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)
ƒ
O & M / Water Consumption
ƒ
Closure Construction - 2005
ƒ
Closure Construction - 2006
ƒ
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
ƒ QUESTIONS?
March 9, 2006
22