Simulation 1

Simulation 1 was performed for a hypothetical landfill at Orlando, FL. The landfill data was entered as under :

Layer	Type*	Material Texture #	Thickness (in)	Remarks
1	1	4	12	Sat. Cond. mult by 3.0 for root Channels
2	2	2	18	slope - 5 % & drainage length - 60 ft
3	3	15	24	Clay
4	1	18	480	Municipal Solid Waste
5	2	2	24	slope - 1 % & drainage length - 100 ft
6	4	40	-	Flexible membrane liner
7	3	15	48	Clay

Note :

1. Vertical percolation layers

2. Lateral drainage layers

3. Barrier soil liners

4. Geomembrane liners

General Design and Evaporative Zone Data

SCS RUNOFF CURVE NUMBER = 67.90

FRACTION OF AREA ALLOWING RUNOFF = 60.0 PERCENT

AREA PROJECTED ON HORIZONTAL PLANE = 1.000 ACRES

EVAPORATIVE ZONE DEPTH = 22.0 INCHES

STATION LATITUDE = 27.80 DEGREES

MAXIMUM LEAF AREA INDEX = 2.00

START OF GROWING SEASON (JULIAN DATE) = 0

END OF GROWING SEASON (JULIAN DATE) = 367

· Evapotranpiration data was obtained from default data for Orlando

· Precipitation data for Orlando entered from default data file

· Temperature data was synthetically generated for Orlando

· Solar radiation data was synthetically generated using coefficients for Orlando and station latitude 27.80 degrees.

The simulation was run for 5 consecutive years. The peak daily values of some of the parameters are presented in the table below :

Parameters	Units (mm)	Units (Cu. m)
Precipitation	90.93	367.997
Runoff	6.957	28.156
Drainage collected from layer 2	5.215	21.104
Percolation/leakage through layer 3	19.282	78.036
Av. head on top of layer 3	190
Max. head on top of layer 3	256
Location of Max head in layer 2	6.0 m from drain
Drainage collected from layer 5	2.295	9.287
Percolation/leakage through layer 7	0.045	0.185
Av. head on top of layer 6	405
Max. head on top of layer 6	473
Location of Max head in layer 5	20.1 m from drain

Final Water Storage at the end of 5th year