250 R.I. Code R. 250-RICR-140-30-1.18
Method 2 Leachability Criteria for Organic Hazardous Substances: The Method 1 Leachability Criteria were derived utilizing the SESOIL and AT123D models (available from General Science Services Corporation) to simulate the transport of organic Hazardous Substances and estimate levels of soil contamination which are protective of the appropriate groundwater objectives. The following tables provide the inputs to the models which were used to estimate the Method 1 Leachability Criteria for organic substances.
Station Name - Providence WSO AP (Green State Airport) | ||
TERM | UNITS | VALUE |
Latitude | Degrees | 41.733 |
Longitude | Degrees | 71.433 |
Number of Years of Climate Data | Years | 1 |
Number of Years of Simulation | Years | 5 |
TERM | UNITS | OCT | NOV | DEC | JAN | FEB | MAR |
Air Temperature | °C | 12.33 0 | 6.720 | 0.280 | -1.560 | -1.110 | 2.720 |
Cloud Cover Fraction | fraction | 0.500 | 0.600 | 0.600 | 0.600 | 0.600 | 0.600 |
Relative Humidity | fraction | 0.750 | 0.700 | 0.750 | 0.700 | 0.700 | 0.700 |
Short Wave Albedo | - | 0.180 | 0.190 | 0.270 | 0.290 | 0.330 | 0.290 |
Evapotranspiration* | cm/day | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
Rainfall Depth (Precipitation) | cm | 9.010 | 10.98 0 | 11.17 0 | 10.17 0 | 9.500 | 10.67 0 |
Mean Storm Duration | days | 0.560 | 0.530 | 0.560 | 0.560 | 0.600 | 0.570 |
Number of Storms per Month | - | 4.390 | 5.720 | 6.000 | 5.660 | 5.260 | 5.890 |
Length of Rainy Season Within Month | days | 30.40 0 | 30.40 0 | 30.40 0 | 30.40 0 | 30.40 0 | 30.40 0 |
SESOIL CLIMATE INPUT PARAMETERS BY MONTH (CONTINUED) | |||||||
TERM | UNITS | APR | MAY | JUN | JUL | AUG | SEP |
Air Temperature | °C | 8.170 | 13.28 | 18.44 | 21.61 | 20.94 | 17.33 |
0 | 0 | 0 | 0 | 0 | |||
Cloud Cover Fraction | fraction | 0.600 | 0.600 | 0.600 | 0.500 | 0.500 | 0.500 |
Relative Humidity | fraction | 0.700 | 0.700 | 0.750 | 0.800 | 0.800 | 0.800 |
Short Wave Albedo | - | 0.190 | 0.180 | 0.180 | 0.180 | 0.180 | 0.180 |
Evapotranspiration* | cm/day | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 |
Rainfall Depth (Precipitation) | cm | 10.59 0 | 9.060 | 7.370 | 7.490 | 9.900 | 8.620 |
Mean Storm Duration | days | 0.540 | 0.470 | 0.370 | 0.310 | 0.390 | 0.420 |
Number of Storms per Month | - | 5.600 | 5.830 | 5.190 | 4.750 | 5.220 | 4.500 |
Length of Rainy Season Within Month | days | 30.40 0 | 30.40 0 | 30.40 0 | 30.40 0 | 30.40 0 | 30.40 0 |
TERM | UNITS | VALUE |
Soil Name | - | - |
Soil Bulk Density | g/cm3 | 1.50 |
Intrinsic Permeability | cm2 | 1.50E-07 |
Soil Disconnetedness Index | - | 7.50 |
Effective Porosity | - | 0.300 |
Organic Carbon Content (Subsurface Soil) | % | 0.100 |
Cation Exchange Coefficient (Capacity) | milli eq. 100g dry soil | 0.000 |
Freundlich Equation Exponent | - | 1.00 |
TERM | UNITS | VALUE |
Number of Years | years | 1 |
Number of Soil Layers | layers | 3 |
Application Area of Compartment | cm2 | 0.10E+07 |
Latitude of the Site (Application Area) | Degree s | 41.733002 |
Loading Type - (1) Spill -Instantaneous or (0) Steady Application - Continuous | - | 0 |
Loading Unit - (1) Mass per Unit Area or (0) Concentration | - | 0 |
Initial Chemical Concentration Given (1) or Not Given (0) | - | 0 |
TERM | UNITS | VALUE | ||
Layer Number | - | 1 | 2 | 3 |
Depths (Layer Thickness) | cm | 0.10E+0 3 | 0.10E+0 3 | 0.10E+03 |
Number of Sublayers/Layer | - | 1 | 1 | 1 |
Ph of Each Layer | - | default | default | default |
Intrinsic Permeability of Each Layer | cm2 | 1.5E-7 | 1.5E-7 | 1.5E-7 |
Liquid Biodegradation (KDEL Ratios) | - | - | 1.00 | 1.00 |
Solid Biodegradation (KDES Ratios) | - | - | 1.00 | 1.00 |
Organic Carbon (OC) Content Ratios for Lower Layers | - | - | 1.00 | 1.00 |
Cation Exchange Coefficient (CEC) Ratios for Lower Layers | - | - | 1.00 | 1.00 |
Freundich (FRN) Ratio | - | - | 1.00 | 1.00 |
Adsorption (ADS) Ratio | - | - | 1.00 | 1.00 |
Pollutant Load Entering Each Layer | µg/cm2 | 0.00 | LC* | 0.00 |
Initial Pollutant Concentration for Any Sublayer | µg/g (ppm) | - | - | - |
Mass Transformed | µg/cm2 | 0.00 | 0.00 | 0.00 |
Sink | µg/cm2 | 0.00 | 0.00 | 0.00 |
Ligand Input Mass | µg/cm2 | 0.00 | 0.00 | 0.00 |
Volatilization Index | - | 0.20 | 0.20 | 0.20 |
Surface Runoff Participation Index | - | 0.00 | - | - |
Ratio Pollutant Concentration in Rain to Pollutant Maximum Solubility in Water | - | 0.00 | - | - |
Modified Summers Model Used (1) or Not (0) for Groundwater Concentration | - | 0 | ||
TERM | UNITS | VALUE |
Base Hydrolysis Constant | l/mol-day | 0.00 |
Acid Hydrolysis Constant | l/mol-day | 0/00 |
Biodegradation Rate in Moisture | 1/day | 0.00 |
Biodegradation Rate on Soil | 1/day | 0.00 |
Ligand-Pollutant Stability Constant | - | 0.00 |
No. Moles Ligand/Mole Pollutant | - | 0.00 |
Ligand Molecular Weight | g/mole | 0.00 |
TERM | UNITS | VALUE |
No. of Points in X-Direction | - | 1 |
No. of Points in Y-Direction | - | 1 |
No. of Points in Z-Direction | - | 1 |
No. of Roots: No. of Series Terms | - | 400 |
No. of Beginning Time Step | - | 13 |
No. of Ending Time Step | - | 61 * |
No. of Time Intervals for Printed Out Solution | - | 1 |
Instantaneous Source Control = 0 for Instant Source | - | 1 |
Source Condition Control = 0 for Steady Source | - | 60 |
Intermittent Output Control = 0 No Such Output | - | 1 |
Case Control = 1 Thermal, = 2 for Chemical, = 3 RAD | - | 2 |
Aquifer Depth, = 0.0 for Infinite Deep | m | 0 |
Aquifer Width, = 0.0 for Infinite Wide | m | 0 |
Begin Point of X-Source Location | m | -5 |
End Point of X-Source Location | m | 5 |
Begin Point of Y-Source Location | m | -5 |
End Point of Y-Source Location | m | 5 |
Begin Point of Z-Source Location | m | 0 |
End Point of Z-Source Location | m | 0 |
Hydraulic Conductivity | m/hr | 0.53 |
Hydraulic Gradient | - | 0.005 |
Longitudinal Dispersivity | m | 20 |
Lateral Dispersivity | m | 2 |
Vertical Dispersivity | m | 2 |
X Dimension | m | 15 |
Y Dimension | m | 0 |
Z Dimension | m | 0 |
61 * = The SESOIL program only allows a maximum time interval run of 19 months. Sixty-one months (5 years of simulation) was the total time interval used to determine the maximum groundwater impact. |
SITE-SPECIFIC DILUTION FACTOR | |||
TERM | DESCRIPTION | UNITS | VALUE |
DF | Site-specific dilution factor | Calculated | |
K | Hydraulic conductivity of the unconsolidated aquifer underlying the Release area | ft/yr | 15000 |
I | Horizontal hydraulic gradient | ft/ft | 0.005 |
SITE-SPECIFIC DILUTION FACTOR | |||
D | Distance | ft | 15 |
I | Infiltration rate | ft/yr | 2.0 |
L | Length of the Release area parallel to the direction of groundwater flow | ft | 50 |
Fadj | Background concentration for groundwater divided by the appropriate groundwater objective for the Hazardous Substance, or, where the background concentration for groundwater cannot be quantified, 1/2 the minimum detection limit for the Hazardous Substance divided by the appropriate groundwater objective for the Hazardous Substance. | Chemical -Specific | |
250 R.I. Code R. 250-RICR-140-30-1.18