Module Description File (.DES) Example
This example is from the case_01 test case.
"mf","Version 2.1"
"Human Exposure & Risk:Exposure Pathways:exp","MEPAS 5.0 Exposure Pathways Module","exp.exe","MepExp.bat","exp.ico"
"
MODULE VERSION
5.0 Compiled on 6/1/2006
MODULE DESCRIPTION
The MEPAS Exposure Pathways Module can be used to
calculate pollutant concentrations in exposure
media resulting from contamination of air,
groundwater, surface water, and soil. The module
includes consideration of domestic water use,
farm product consumption, aquatic food consumption,
surface water recreational activities, soil contact
exposure, and air exposures. Both chemical and
radioactive pollutants may be evaluated. Indoor
air inhalation of volatile compounds may be evaluated
using either the MEPAS shower model or the
EPA/Andelman indoor air model. Transfer of activity
through food chains is modeled using concentration
ratios, bioaccumulation factors and transfer factors.
Radioactive chain decay with branching is included
in evaluation of changing media concentrations with
time. Buildup and leaching of constituents from
surface soil is accounted for as a function of time.
For waterborne contamination, exposure media
concentrations are evaluated for one location.
For atmospheric contamination, media concentrations
are evaluated for each location defined in the ato file.
Limitations:
The atmospheric transport output file (ato) can have
data for a maximum of 10 time periods, 20 distances,
and 36 directions. A maximum of 100 time points can
be defined for each data set in the water concentration
file (wcf).
MODULE REFERENCES
Strenge, D.L., and P.J. Chamberlain. 1995.
Multimedia Environmental Pollutant Assessment
System (MEPAS): Exposure Pathway and Human
Health Impact Assessment Models.
PNL-10523. Pacific Northwest Laboratory, Richland, WA.
Other related sites:
http://mepas.pnl.gov/mepas
http://mepas.pnl.gov/FramesV1/exposure.html
VALID CONNECTIONS
Valid Input Reads
1 to 1 con required as input
0 to 1 scf Soil required as input
0 to 1 wcf Aquifer required as input
0 to 1 wcf Surface Water required as input
0 to 1 ato Air required as input
0 to 1 ato Polar Air required as input
Valid Output Writes
epf Exposure Pathways
SYSTEM REQUIREMENTS
Operating System: WIN 95 / NT
Processor: Pentium
RAM Memory: Minimum 16MB
Disk Space: Minimum 4MB free disk space
POINT OF CONTACT
Company Name: Pacific Northwest National Laboratory
Contact Name: Dennis Strenge
Mailing Address: PO Box 999
City: Richland
State: WA
Zip Code: 99352
Country: USA
Telephone Number:
Fax Number:
Email Address: dennis.strenge@pnl.gov
URL Address: http://mepas.pnl.gov/mepas/mexp/requirements.html
"
12,"Read"
5,"wcf","Aquifer",1,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",0,1,"ato","Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",1,1,"con","",1,1,"scf","Soil",0,1,"ato","Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",1,1,"ato","Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",0,1,"ato","Air",1,1
5,"wcf","Aquifer",1,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",0,1,"ato","Polar Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",1,1,"con","",1,1,"scf","Soil",0,1,"ato","Polar Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",1,1,"ato","Polar Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",0,1,"ato","Polar Air",1,1
5,"wcf","Aquifer",1,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",0,1,"ato","Cartesian Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",1,1,"con","",1,1,"scf","Soil",0,1,"ato","Cartesian Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",1,1,"ato","Cartesian Air",0,1
5,"wcf","Aquifer",0,1,"wcf","Surface Water",0,1,"con","",1,1,"scf","Soil",0,1,"ato","Cartesian Air",1,1
2,"Write"
"epf","Exposure Pathways"
"msg","Messages"
78,"Variables"
"CVTFormat","Not Stochastic",,,,"Number format to use",0,STRING
"KNPATH","Not Stochastic","","Min",0,"Max",7,"Pathway selection flag",0,INTEGER
"KGDR","Not Stochastic","","Min",0,"Max",3,"Domestic Usage",0,INTEGER
"KGIR","Not Stochastic","","Min",-1,"Max",2,"Irrigation Usage",0,INTEGER
"KSDR","Not Stochastic","","Min",0,"Max",3,"Domestic Usage",0,INTEGER
"KSIR","Not Stochastic","","Min",-1,"Max",2,"Irrigation Usage",0,INTEGER
"KSAQ","Not Stochastic","","Min",0,"Max",3,"Aquatic Food Usage",0,INTEGER
"KSR","Not Stochastic","","Min",0,"Max",4,"Recreational Usage",0,INTEGER
"KAIN","Not Stochastic","","Min",0,"Max",1,"Regional Exposure",0,INTEGER
"KAAG","Not Stochastic","","Min",0,"Max",1,"Agricultral Exposure",0,INTEGER
"GWFEED","Not Stochastic","","","","Ground water used for feed irrigation",0,LOGICAL
"GWDRINK","Not Stochastic","","","","Ground water used for drinking water",0,LOGICAL
"SWFEED","Not Stochastic","","","","Surface water used for feed irrigation",0,LOGICAL
"SWDRINK","Not Stochastic","","","","Surface water used for drinking water",0,LOGICAL
"SOILMOD","Not Stochastic","","","","Soil concentration file model usage",0,LOGICAL
"NYEARS","Not Stochastic","yr","","","Time step between computations",0,FLOAT
"KEXPTH","Not Stochastic",,"Min",0,"Max",1,"Flag",2,INTEGER
"Variable","Pathways","Index1","","","","",""
"Variable","Media","Index2","","","","",""
"LTRTL","Not Stochastic","","","","Check if water is treated water",1,INTEGER
"Variable","Media","Index1","","","","",""
"LEACHOPTION","Not Stochastic","","Min",0,"Max",1,"Leachrate selection option",0,INTEGER
"DGWED","Continuous","yr","Min",1,"Max",100,"Exposure duration",0,FLOAT
"DSWED","Continuous","yr","Min",1,"Max",100,"Exposure duration",0,FLOAT
"ATED","Continuous","yr","Min",1,"Max",100,"Exposure duration",0,FLOAT
"SMED","Continuous","yr","Min",1,"Max",100,"Exposure duration",0,FLOAT
"TWTR","Continuous","day","Min",0,"Max",100,"Water distribution time",1,FLOAT
"Variable","Media","Index1","","","","",""
"FIRR","Continuous","","Min",0,"Max",1,"Fraction of the year that groundwater is used for irrigation",1,FLOAT
"Variable","Media","Index1","","","","",""
"CIRR","Continuous","L/m^2/mon","Min",0,"Max",999.9,"Irrigation rate",1,FLOAT
"Variable","Media","Index1","","","","",""
"TISSUE","Continuous","","Min",0.0001,"Max",10000,"Finned fish fillet correction factor",0,FLOAT
"TFSH","Continuous","day","Min",0,"Max",999.9,"Finfish ingestion harvest delay time",0,FLOAT
"TINV","Continuous","day","Min",0,"Max",999.9,"Shell fish ingestion harvest delay time",0,FLOAT
"TSS","Continuous","m","Min",0.001,"Max",5,"Thickness of shoreline sediments",0,FLOAT
"RHOSS","Continuous","g/cm^3","Min",1,"Max",4,"Density of shoreline sediments",0,FLOAT
"TAS","Continuous","m","Min",0.001,"Max",5,"Thickness of soil recieving deposition",0,FLOAT
"RHOAS","Continuous","g/cm^3","Min",1,"Max",4,"Density of soil recieving deposition",0,FLOAT
"TEXPOS","Continuous","yr","Min",0,"Max",1000000,"Time to start exposure computation",0,FLOAT
"MAXTIM","Not Stochastic","yr","Min",0,"","Maximum time for reporting",0,FLOAT
"NTIMES","Not Stochastic","","Min",0,"","Number of time points for evaluation",0,FLOAT
"NUMCON","Not Stochastic","","","","Constiuent count",0,INTEGER
"NDS","Not Stochastic","","","","Number of daughter products",1,INTEGER,con.FSCASID
"Variable","FSCNAME","Site","Index1","","","",""
"CASID","Not Stochastic","","","","Chemical Abstract System Identification",1,STRING,con.FSCASID
"Variable","FSCNAME","Site","Index1","Index2","","",""
"SOILLR","Continuous","1/yr","Min",0,"Max",100,"Leach rate constant",1,FLOAT
"Variable","FSCNAME","Site","Index1","Index2","","",""
"SOILKD","Continuous","ml/g","Min",0,"Max",1000000,"Soil adsorbtion coefficient",1,FLOAT
"Variable","FSCNAME","Site","Index1","Index2","","",""
"RET","Continuous","","Min",0,"Max",1,"Agricultural plant retension fraction of deposited activity",0,FLOAT
"TRN","Continuous","","Min",0,"Max",1,"Tranlocation factors",1,FLOAT
"Variable","TerFood","Index1","","","","",""
"FFC","Continuous","","Min",0,"Max",1,"Feed contamination fraction",1,FLOAT
"Variable","fwAnimal #","Index1","","","","",""
"FWC","Continuous","","Min",0,"Max",1,"Water contamination fraction",1,FLOAT
"Variable","fwAnimal #","Index1","","","","",""
"YLD","Continuous","kg/m^2","Min",0.01,"Max",20,"Feed and crop yields",1,FLOAT
"Variable","TerFood","Index1","","","","",""
"USL","Continuous","kg/day","Min",0,"Max",20,"Animal soil intake rates",1,FLOAT
"Variable","fwAnimal #","Index1","","","","",""
"TCRP","Continuous","day","Min",0,"Max",365,"Harvest delay times",1,FLOAT
"Variable","TerFood","Index1","","","","",""
"TGRW","Continuous","day","Min",10,"Max",365,"Growing period",2,FLOAT
"Variable","TerFood","Index1","","","","",""
"Variable","Media","Index2","","","","",""
"DEN","Continuous","kg/m^2","Min",1,"Max",2000,"Agricultural areal soil density",0,FLOAT
"UMT","Continuous","kg/day","Min",0,"Max",200,"Meat animal intake rate of feed",0,FLOAT
"UMK","Continuous","kg/day","Min",0,"Max",200,"Milk animal intake rate of feed",0,FLOAT
"WMT","Continuous","L/day","Min",0,"Max",300,"Meat animal intake rate of water",0,FLOAT
"WMK","Continuous","L/day","Min",0,"Max",300,"Milk animal intake rate of water",0,FLOAT
"CML","Continuous","kg/m^3","Min",0.000000000001,"Max",0.0001,"Airborne particulate mass loading factor",0,FLOAT
"RESFAC","Continuous","1/m","Min",0.000000000001,"Max",0.0002,"Atmospheric resuspension factor",0,FLOAT
"ANDFC","Continuous","L/m^3","Min",0,"Max",10,"Andelman inhalation factor for volatile chemicals",0,FLOAT
"ANDFR","Continuous","L/m^3","Min",0,"Max",10,"Andelman inhalation factor for radon-222",0,FLOAT
"ANDFO","Continuous","L/m^3","Min",0,"Max",10,"Andelman inhalation factor for other pollutants",0,FLOAT
"pathways","Not Stochastic","","","","Exposure route and path",0,STRING
"media","Not Stochastic","","","","Exposure media",0,STRING
"terFood","Not Stochastic","","","","Terrestrial food",0,STRING
"fwAnimal","Not Stochastic","","","","Fed and watered",0,STRING
"ecshalf","Continuous","day","Min",0,"","Physical loss half-time in soil",1,FLOAT
"Variable","FSCNAME","Site","Index1","Index2","","",""
"ecghalf","Continuous","day","Min",0,"","Physical loss half-time in groundwater",1,FLOAT
"Variable","FSCNAME","Site","Index1","Index2","","",""
"ecthalf","Continuous","day","Min",0,"","Physical loss half-time in air",1,FLOAT
"Variable","FSCNAME","Site","Index1","Index2","","",""
"ecwhalf","Continuous","day","Min",0,"","Physical loss half-time in surface water",1,FLOAT
"Variable","FSCNAME","Site","Index1","Index2","","",""
"ecclass","Not Stochastic","","","","USDA Soil texture classification",0,INTEGER
"ecsand","Not Stochastic","percent","","","Percent sand in soil",0,FLOAT
"ecsilt","Not Stochastic","percent","","","Percent silt in soil",0,FLOAT
"ecclay","Not Stochastic","percent","","","Percent clay in soil",0,FLOAT
"ecomc","Not Stochastic","percent","","","Percent organic matter in soil",0,FLOAT
"eciron","Not Stochastic","percent","","","Percent iron in soil",0,FLOAT
"ecph","Not Stochastic","pH","Min",1,"Max",14,"Soil pH",0,FLOAT
"THICK","Continuous","cm","Min",0,"Max",1000,"Surface soil thickness",0,FLOAT
"MOIST","Continuous","fraction","Min",0,"Max",1,"Surface soil moisture content",0,FLOAT
"BULKD","Continuous","g/cm^3","Min",0.5,"Max",3,"Surface soil bulk density",0,FLOAT
"LEACV","Continuous","cm/yr","Min",0,"Max",500,"Total infiltration rate",0,FLOAT
