SLIPPERY ROCK WATERSHED
COALITION
SR 85/SR86 FERRIS WEST
VERTICAL FLOW
SYSTEM & RENTION
AREA FACT SHEET
PA Game Lands No. 95, Washington Township,
Butler County, PA
FUNDING SOURCE:
Reclamation Agreement funds from the Sunbeam
Tipple Restoration Project
PROJECT PARTICIPANTS:
| Kerry Coal Company |
PA Fish and Boat Commission |
| NRCS |
PA Game Commission |
| WPCAMR |
PA DEP Northwest Regional Office |
| Slippery Rock Watershed Coalition |
B.A.M.R. |
| Slippery Rock University |
District Mining Operations(Knox) |
| Butler County Conservation District |
|
COMPLETION DATE:
Major construction completed August 1997
Water Quality Monitoring ongoing: A Bureau
of District Mining Operations(Knox)
MATERIALS USED FOR TREATMENT:
444 yd3 of compost mixed with 145 tons
of #9 limestone
1750 tons of AASHTO No. 1 limestone
WATER COLLECTION AND DISTRIBUTION:
Collection: Check dam and rock
lined channel
Inlet: From the collection system,
flow is distributed vertically down through a 3.5 foot layer of
compost/limestone mixture to a underdrain
system consisting of 4 rows of 4" perforated Schedule 40 PVC connected
to a 6" Schedule 40 PVC manifold which is embedded in a 2 foot layer of
river gravel of the first cell. Flow from the underdrain system rises
vertically through a 6" Schedule 40 PVC slope pipes and is discharged to
the second cell. The flow moves vertically down through the AASHTO
No. 1 limestone of the second cell to an underdrain system similar to
that of the first cell.
Outlet: Flow from the second cell
is discharged to the retention area through an Inline Water Level Control
Structure. This device can be vertically adjusted to control the
pool elevation in the second cell by the use of stop logs. The current
elevation of the stops logs creates a 5 foot depth of water above the top
of the AASHTO No. 1 limestone.
SYSTEM DIMENSIONS (FEET):
Length Width
Depth
Cell 1
140 90
15
Cell 2
260 110
15
Retention Area (embankment)
1300 10
5
SOIL AMENDMENTS AND SEED MIXTURE:
Birdsfoot trefoil @ 10 lbs/ac; White Dutch
clover @ 4 lbs/ac; KY Bluegrass @ 10 lbs/ac; Winter Wheat cover, Aglime
@ 4 tons/ac; 10-20-20 fertilizer; straw @ 100 bales/ac
WATER QUALITY (representative):
| |
Flow
|
pH
|
Alk (mg/L)
|
Acid (mg/L)
|
Fe (mg/L)
|
Al (mg/L)
|
| Pre-construction: Raw |
82.8
|
3.3
|
0
|
87.4
|
4.9
|
3.7
|
| Post-construction: Final |
82.8
|
6.9
|
109
|
0
|
0.6
|
0.8
|
|