A4+-+NDRBCA+Calculator.xls

XLS spreadsheet 8 MB Posted Jul 15, 2025

Attached to: Lidgerwood 1Stop Tank Removal and Assessment
Solicitation number: 303-25-002
Issued by: Sargent County, North Dakota

About this file

Written by GovTribe AI · Jul 16, 2025

The file is a North Dakota Risk-Based Corrective Action (NDRBCA) Computational Software spreadsheet developed by EDGE Engineering & Science for exclusive use by the North Dakota Department of Environmental Quality (NDDEQ). The software was developed to be consistent with the North Dakota Risk-Based Corrective Action Technical Guidance document dated September 2022, with the computational software version released in December 2022. The spreadsheet provides a comprehensive database of physical, chemical, and toxicity properties for various chemicals, including volatile organic compounds, polycyclic aromatic hydrocarbons, metals, chlorinated solvents, and total petroleum hydrocarbon fractions.

The software includes detailed computational tools for assessing environmental risk across multiple exposure pathways, such as groundwater use, surface water protection, indoor inhalation, and dermal contact. It offers calculation mechanisms for different user scenarios including residential, commercial/industrial, and construction worker exposures, with the ability to calculate target risk levels, representative concentrations, and allowable concentrations under various environmental conditions. The spreadsheet incorporates extensive data on chemical properties like molecular weight, water solubility, Henry's Law constant, organic carbon adsorption coefficient, and toxicological parameters such as slope factors, reference doses, and unit risks for individual chemicals, enabling comprehensive environmental risk assessment and remediation planning.

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TITLE

&L&8&D-&T-&F

NORTH DAKOTA RISK-BASED CORRECTIVE ACTION (NDRBCA) COMPUTATIONAL SOFTWARE

Developed to be consistent with:

North Dakota Risk-Based Corrective Action Technical Guidance (September 2022) Version 1.0, December 2022 Developed by:

EDGE Engineering & Science 16285 Park Ten Place, Suite 400 Ph: (832) 498-1717 Email: amsalhotra@edge-es.com

EXIT

CONTINUE

SITE

North Dakota Department of Environmental Quality (NDDEQ)
	For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

&L&8&D-&T-&F

NORTH DAKOTA RISK-BASED CORRECTIVE ACTION (NDRBCA)

COMPUTATIONAL SOFTWARE

SITE INFORMATION

SITE No.

CONTACT NAME

TELEPHONE NO.

SITE NAME

ADDRESS

MAIN MENU

TITLE

DATABASE

DATA BASE OF PHYSICAL, CHEMICAL AND TOXICITY PROPERTIES

Slope Factor

Reference Dose

Absorption Factor

Allowable Concentrations in Surface Water (mg/L)

Parameters for Dermal Contact Pathway

Chemicals

CAS # and Type

MCL

Molecular Weight, MW

Water Solubility, S

Henry's Law Constant, H

Organic Carbon Adsorption Coefficient, Koc

Soil-Water Partition Coefficient, Kd

Diffusion Coefficient in Air, Da

Diffusion Coefficient in Water, Dw

Vapor Pressure, P

Octanol-Water Partition Coefficient, Kow

Oral Sf o

Inhalation Unit Risk

(IUR)

Dermal Sf d

Oral RfD o

Reference Concentration

(RfC)

Dermal RfD d

Dermal RAF d

Oral RAFo

Dermal Perm Constant (Kp)

Half Life

Type

Drinking Water Supply

Irrigation

Cool Water Fishery

Livestock and Wildlife Watering

Industrial

Cold Water Fishery

Water-body Contact Recreation

Boating and Canoeing

AQL

Acute Criteria for Stream U

CAS #

Relative Contribution of Permeability Coefficient (B)

Lag Time

(τevent )

Time to Reach Steady-State (t*)

Fraction Absorbed (FA)

Is Chemical Mutagen?

Yes/No

Relative Bioavailability Factor (RBA)

Is Chemical Volatile?

Yes/No

(mg/L)

(g/mol)

(mg/L)

(L-air/L-water)

(cm3/g)

(cm2/s)

(mmHg)

(cm3/g)

(mg/kg-day)-1

(mg/kg-day)

Unitless

cm/hr

Days

[--]

[hr]

[--]

Benzene

V 71-43-2

0.005

1.79E+03

2.27E-01

1.46E+02

8.95E-02

1.03E-05

9.48E+01

5.5E-02

7.8E-06

5.5E-02

4.0E-03

3.0E-02

4.0E-03

1.0

1.49E-02

---

71-43-2

5.07E-02

2.88E-01

6.91E-01

1.00

Yes

Ethylbenzene

V 100-41-4

0.7

106

1.69E+02

3.22E-01

4.46E+02

6.85E-02

8.46E-06

9.60E+00

1.1E-02

2.5E-06

1.1E-02

5.0E-02

1.0E+00

5.0E-02

1.0

4.93E-02

100-41-4

1.95E-01

4.13E-01

9.92E-01

1.00

Yes

Isopropylbenzene (Cumene)

V 98-82-8

120

6.13E+01

4.70E-01

6.98E+02

6.03E-02

7.86E-06

4.50E+00

1.0E-01

4.0E-01

1.0E-01

1.0

8.97E-02

---

98-82-8

3.78E-01

4.95E-01

1.19E+00

Yes

Methyl tert-Butyl Ether (MTBE)

V 1634-04-4

5.10E+04

2.40E-02

1.16E+01

7.53E-02

8.59E-06

2.50E+02

1.8E-03

2.6E-07

1.8E-03

3.0E+00

1.0

2.11E-03

1634-04-4

7.62E-03

3.28E-01

7.87E-01

Yes

Naphthalene

V 91-20-3

128

3.10E+01

1.80E-02

1.54E+03

6.05E-02

8.38E-06

8.50E-02

1.2E-01

3.4E-05

1.2E-01

2.0E-02

3.0E-03

2.0E-02

0.13

1.0

4.66E-02

91-20-3

2.03E-01

5.49E-01

1.32E+00

1.00

Yes

1,2,4-Trimethylbenzene

V 95-63-6

120

5.70E+01

2.52E-01

6.14E+02

6.07E-02

7.92E-06

2.10E+00

1.0E-02

6.0E-02

1.0E-02

1.0

8.57E-02

---

95-63-6

3.61E-01

4.95E-01

1.19E+00

Yes

1,3,5-Trimethylbenzene

V 108-67-8

120

4.82E+01

3.59E-01

6.02E+02

6.02E-02

7.84E-06

2.48E+00

1.0E-02

6.0E-02

1.0E-02

1.0

6.21E-02

108-67-8

2.62E-01

4.95E-01

1.19E+00

Yes

Toluene

V 108-88-3

5.26E+02

2.71E-01

2.34E+02

7.78E-02

9.20E-06

2.84E+01

8.0E-02

5.0E+00

8.0E-02

1.0

3.11E-02

108-88-3

1.15E-01

3.45E-01

8.28E-01

1.00

Yes

Xylene, Total

V 1330-20-7

106

1.06E+02

2.71E-01

3.83E+02

6.85E-02

8.46E-06

7.99E+00

2.0E-01

1.0E-01

2.0E-01

1.0

5.00E-02

1330-20-7

1.98E-01

4.13E-01

9.92E-01

Yes

Acenaphthene

P 83-32-9

154

3.90E+00

7.52E-03

5.03E+03

5.06E-02

8.33E-06

2.15E-03

6.0E-02

0.13

1.0

8.60E-02

---

83-32-9

4.11E-01

7.68E-01

1.84E+00

Yes

Anthracene

P 120-12-7

178

4.34E-02

2.27E-03

1.64E+04

3.90E-02

7.85E-06

6.53E-06

3.0E-01

0.13

1.0

1.42E-01

120-12-7

7.29E-01

1.05E+00

4.05E+00

Yes

Benzo(a)anthracene

P 56-55-3

228

9.40E-03

4.91E-04

1.77E+05

2.61E-02

6.75E-06

2.10E-07

1.0E-01

6.0E-05

1.0E-01

0.13

1.0

5.52E-01

56-55-3

3.21E+00

2.00E+00

8.48E+00

1.00

Yes

Benzo (a) Pyrene

P 50-32-8

0.0002

252

1.62E-03

1.87E-05

5.87E+05

2.55E-02

6.58E-06

5.49E-09

1.0E+00

6.0E-04

1.0E+00

3.0E-04

2.0E-06

3.0E-04

0.13

1.0

7.13E-01

50-32-8

4.36E+00

2.72E+00

1.18E+01

1.00

Yes

Benzo(b)fluoranthene

P 205-99-2

252

1.50E-03

2.69E-05

5.99E+05

2.50E-02

6.43E-06

5.00E-07

1.0E-01

6.0E-05

1.0E-01

0.13

1.0

4.17E-01

205-99-2

2.55E+00

2.72E+00

1.13E+01

1.00

Yes

Benzo(k)fluoranthene

P 207-08-9

252

8.00E-04

2.39E-05

5.87E+05

2.50E-02

6.43E-06

9.65E-10

1.0E-02

6.0E-06

1.0E-02

0.13

1.0

6.91E-01

207-08-9

4.22E+00

2.72E+00

1.18E+01

Yes

Chrysene

P 218-01-9

228

2.00E-03

2.14E-04

1.81E+05

2.61E-02

6.75E-06

6.23E-09

1.0E-03

6.0E-07

1.0E-03

0.13

1.0

5.96E-01

---

218-01-9

3.46E+00

2.00E+00

8.53E+00

1.00

Yes

Ethylene dibromide

P 106-93-4

0.00005

188

3.91E+03

2.66E-02

3.96E+01

4.30E-02

1.04E-05

1.12E+01

2.0E+00

6.0E-04

2.0E+00

9.0E-03

1.0

2.78E-03

106-93-4

1.47E-02

1.19E+00

2.84E+00

1.00

Yes

Fluoranthene

P 206-44-0

202

2.60E-01

3.62E-04

5.55E+04

2.76E-02

7.18E-06

9.22E-06

4.0E-02

0.13

1.0

3.08E-01

206-44-0

1.68E+00

1.43E+00

5.73E+00

1.00

Fluorene

P 86-73-7

166

1.69E+00

3.93E-03

9.16E+03

4.40E-02

7.89E-06

6.00E-04

4.0E-02

0.13

1.0

1.10E-01

86-73-7

5.45E-01

8.97E-01

2.15E+00

Yes

Indeno (1,2,3-cd) Pyrene

P 193-39-5

276

1.90E-04

1.42E-05

1.95E+06

2.47E-02

6.37E-06

1.25E-10

1.0E-01

6.0E-05

1.0E-01

0.13

1.0

1.24E+00

193-39-5

7.93E+00

3.71E+00

1.67E+01

0.60

Yes

1-Methylnapthalene

P 90-12-0

142

2.58E+01

2.10E-02

2.53E+03

5.28E-02

7.85E-06

6.70E-02

2.9E-02

7.0E-02

0.13

1.0

9.31E-02

90-12-0

4.27E-01

6.58E-01

1.58E+00

Yes

2-Methylnapthalene

P 91-57-6

142

2.46E+01

2.12E-02

2.48E+03

5.24E-02

7.78E-06

5.50E-02

4.0E-03

0.13

1.0

9.17E-02

91-57-6

4.21E-01

6.58E-01

1.58E+00

Yes

Naphthalene

P 91-20-3

128

3.10E+01

1.80E-02

1.54E+03

6.05E-02

8.38E-06

8.50E-02

1.2E-01

3.4E-05

1.2E-01

2.0E-02

3.0E-03

2.0E-02

0.13

1.0

4.66E-02

91-20-3

2.03E-01

5.49E-01

1.32E+00

1.00

Yes

Pyrene

P 129-00-0

202

1.35E-01

4.87E-04

5.43E+04

2.78E-02

7.25E-06

4.50E-06

3.0E-02

0.13

1.0

2.01E-01

---

129-00-0

1.10E+00

1.43E+00

5.54E+00

Yes

Arsenic

M 7440-38-2

0.01

2.90E+01

1.5E+00

4.3E-03

1.5E+00

3.0E-04

1.5E-05

3.0E-04

0.03

1.0

1.00E-03

7440-38-2

3.33E-03

2.76E-01

6.63E-01

0.6

Barium

M 7440-39-3

137

4.10E+01

2.0E-01

5.0E-04

1.4E-02

0.1

1.00E-03

---

7440-39-3

4.51E-03

6.18E-01

1.48E+00

Beryllium

M 7440-41-7

0.004

7.90E+02

2.4E-03

2.0E-03

2.0E-05

1.4E-05

0.0

1.00E-03

7440-41-7

1.15E-03

1.18E-01

2.83E-01

Cadmium (diet)

M 7440-43-9

112

1.8E-03

1.0E-04

1.0E-05

2.5E-06

0.001

0.0

1.00E-03

---

7440-43-9

4.08E-03

4.48E-01

1.08E+00

Cadmium (water)

M 7440-43-9

0.005

112

7.50E+01

1.8E-03

1.0E-04

1.0E-05

5.0E-06

0.001

0.1

1.00E-03

---

7440-43-9

4.08E-03

4.48E-01

1.08E+00

Chromium (III)

M 16065-83-1

1.80E+06

1.5E+00

2.0E-02

0.0

1.00E-03

---

16065-83-1

2.77E-03

2.06E-01

4.93E-01

Chromium (VI)

M 18540-29-9

1.69E+06

1.90E+01

5.0E-01

8.4E-02

2.0E+01

3.0E-03

1.0E-04

7.5E-05

0.0

2.00E-03

18540-29-9

5.55E-03

2.06E-01

4.93E-01

Yes

Chromium (total)

M 7440-47-3

0.1

1.80E+06

0.0

1.00E-03

7440-47-3

2.77E-03

2.06E-01

4.93E-01

Lead

M 7439-92-1

0.015

207

9.00E+02

1.0

1.00E-04

---

7439-92-1

5.54E-04

1.52E+00

3.65E+00

Manganese (non-diet)

M 7439-96-5

6.50E+01

2.4E-02

5.0E-05

9.6E-04

0.0

1.00E-03

---

7439-96-5

2.85E-03

2.14E-01

5.13E-01

Mercury (elemental)

M 7439-97-6

0.002

201

6.00E-02

3.52E-01

5.20E+01

3.07E-02

6.30E-06

1.96E-03

3.0E-04

1.0

1.00E-03

---

7439-97-6

5.45E-03

1.40E+00

3.35E+00

Yes

Selenium

M 7782-49-2

0.05

5.00E+00

1.42E-10

5.0E-03

2.0E-02

5.0E-03

1.0

1.00E-03

---

7782-49-2

3.42E-03

2.91E-01

6.99E-01

Silver

M 7440-22-4

108

8.30E+00

5.0E-03

2.0E-04

0.0

6.00E-04

---

7440-22-4

2.40E-03

4.23E-01

1.01E+00

Hexachloroethane

C 67-72-1

237

5.00E+01

1.59E-01

1.97E+02

3.21E-02

8.89E-06

2.10E-01

4.0E-02

1.1E-05

4.0E-02

7.0E-04

3.0E-02

7.0E-04

1.0

4.15E-02

---

67-72-1

2.46E-01

2.23E+00

5.34E+00

1.00

Yes

Pentachloroethane

C 76-01-7

202

4.90E+02

7.93E-02

1.36E+02

3.15E-02

8.57E-06

3.50E+00

9.0E-02

1.0

1.58E-02

76-01-7

8.64E-02

1.43E+00

3.43E+00

Yes

1,1,1,2-Tetrachloroethane

C 630-20-6

168

1.07E+03

1.02E-01

8.60E+01

4.82E-02

9.10E-06

1.20E+01

2.6E-02

7.4E-06

2.6E-02

3.0E-02

1.0

1.59E-02

630-20-6

7.92E-02

9.16E-01

2.20E+00

Yes

1,1,2,2-Tetrachloroethane

C 79-34-5

168

2.83E+03

1.50E-02

9.49E+01

4.89E-02

9.29E-06

4.62E+00

2.0E-01

5.8E-05

2.0E-01

2.0E-02

1.0

6.94E-03

79-34-5

3.46E-02

9.16E-01

2.20E+00

1.00

Yes

1,1,2-Trichloroethane

C 79-00-5

0.005

133.41

4.59E+03

3.37E-02

6.07E+01

6.69E-02

1.00E-05

2.30E+01

5.7E-02

1.6E-05

5.7E-02

4.0E-03

2.0E-04

4.0E-03

1.0

5.04E-03

---

79-00-5

2.24E-02

5.87E-01

1.41E+00

1.00

Yes

1,1,1-Trichloroethane

C 71-55-6

0.2

133

1.29E+03

7.03E-01

4.39E+01

6.48E-02

9.60E-06

1.24E+02

2.0E+00

5.0E+00

2.0E+00

1.0

1.26E-02

71-55-6

5.60E-02

5.87E-01

1.41E+00

1.00

Yes

1,2-Dichloroethane

C 107-06-2

0.005

8.60E+03

4.82E-02

3.96E+01

8.57E-02

1.10E-05

7.89E+01

9.1E-02

2.6E-05

9.1E-02

6.0E-03

7.0E-03

6.0E-03

1.0

4.20E-03

---

107-06-2

1.61E-02

3.77E-01

9.04E-01

1.00

Yes

1,1-Dichloroethane

C 75-34-3

5.04E+03

2.30E-01

3.18E+01

8.36E-02

1.06E-05

2.27E+02

5.7E-03

1.6E-06

5.7E-03

2.0E-01

1.0

6.75E-03

---

75-34-3

2.58E-02

3.77E-01

9.04E-01

1.00

Yes

Chloroethane

C 75-00-3

6.71E+03

4.54E-01

2.17E+01

1.04E-01

1.16E-05

1.01E+03

4.0E+00

1.0

6.07E-03

---

75-00-3

1.88E-02

2.42E-01

5.80E-01

1.00

Yes

Perchloroethene (PCE)

C 127-18-4

0.005

166

2.06E+02

7.24E-01

9.49E+01

5.05E-02

9.46E-06

1.85E+01

2.1E-03

2.6E-07

2.1E-03

6.0E-03

4.0E-02

6.0E-03

1.0

3.34E-02

---

127-18-4

1.65E-01

8.92E-01

2.14E+00

1.00

Yes

Trichloroethene (TCE)

C 79-01-6

0.005

131

1.28E+03

4.03E-01

6.07E+01

6.87E-02

1.02E-05

6.90E+01

4.6E-02

4.1E-06

4.6E-02

5.0E-04

2.0E-03

5.0E-04

1.0

1.16E-02

---

79-01-6

5.11E-02

5.72E-01

1.37E+00

1.00

Yes

1,1-Dichloroethene

C 75-35-4

0.007

2.42E+03

1.07E+00

3.18E+01

8.63E-02

1.10E-05

6.00E+02

5.0E-02

2.0E-01

5.0E-02

1.0

1.17E-02

---

75-35-4

4.43E-02

3.67E-01

8.81E-01

1.00

Yes

cis-1,2-Dichloroethene

C 156-59-2

0.07

6.41E+03

1.67E-01

3.96E+01

8.84E-02

1.13E-05

2.00E+02

2.0E-03

1.0

1.10E-02

156-59-2

4.17E-02

3.67E-01

8.81E-01

Yes

trans-1,2-Dichloroethene

C 156-60-5

0.1

4.52E+03

3.83E-01

3.96E+01

8.76E-02

1.12E-05

3.31E+02

2.0E-02

4.0E-02

2.0E-02

1.0

1.10E-02

156-60-5

4.17E-02

3.67E-01

8.81E-01

Yes

Vinyl chloride (VC)

C 75-01-4

0.002

8.80E+03

1.14E+00

2.17E+01

1.07E-01

1.20E-05

2.98E+03

7.2E-01

4.4E-06

7.2E-01

3.0E-03

8.0E-02

3.0E-03

1.0

8.38E-03

75-01-4

2.55E-02

2.35E-01

5.65E-01

1.00

Yes

Bromide

I 7726-95-6

---

7726-95-6

Chloride

I 16887-00-6

16887-00-6

Nitrate as total nitrogen

I 14797-55-8

1.6E+00

1.0

1.00E-03

14797-55-8

3.03E-03

2.34E-01

5.61E-01

Strontium

I 7440-24-6

3.50E+01

6.0E-01

1.0

1.00E-03

---

7440-24-6

3.60E-03

3.25E-01

7.81E-01

Aliphatic - > C6-C8

T NA

100

5.40E+00

5.00E+01

3.98E+03

1.00E-01

1.00E-05

4.79E+01

5.0E+00

1.9E+01

5.0E+00

1.0

Yes

Aliphatic - > C8-C10

T NA

130

4.30E-01

8.00E+01

3.16E+04

1.00E-01

1.00E-05

4.79E+00

1.0E-01

1.0E+00

1.0E-01

1.0

Yes

Aromatic - >C8-C10

T NA

120

6.50E+01

4.80E-01

1.58E+03

1.00E-01

1.00E-05

4.79E+00

4.0E-02

2.0E-01

4.0E-02

1.0

Yes

Aliphatic - >C10-C12

T NA

160

3.40E-02

1.20E+02

2.51E+05

1.00E-01

1.00E-05

4.79E-01

1.0E-01

1.0E+00

1.0E-01

0.1

1.0

Yes

Aliphatic - >C12-C16

T NA

200

7.60E-04

5.20E+02

5.01E+06

1.00E-01

1.00E-05

3.65E-02

1.0E-01

1.0E+00

1.0E-01

0.1

1.0

Yes

Aliphatic - >C16-C21

T NA

270

2.50E-06

4.90E+03

6.31E+08

1.00E-01

1.00E-05

8.40E-04

2.0E+00

0.1

1.0

Yes

Aromatic - >C10-C12

T NA

130

2.50E+01

1.40E-01

2.51E+03

1.00E-01

1.00E-05

4.79E-01

4.0E-02

2.0E-01

4.0E-02

0.1

1.0

Yes

Aromatic - >C12-C16

T NA

150

5.80E+00

5.30E-02

5.01E+03

1.00E-01

1.00E-05

3.65E-02

4.0E-02

2.0E-01

4.0E-02

0.1

1.0

---

Yes

Aromatic - >C16-C21

T NA

190

6.50E-01

1.30E-02

1.58E+04

1.00E-01

1.00E-05

8.36E-04

3.0E-02

0.1

1.0

---

Yes

Aliphatic - >C21-C35

T NA

270

2.50E-06

4.90E+03

6.31E+08

1.00E-01

1.00E-05

8.40E-04

2.0E+00

0.1

1.0

Yes

Aromatic - >C21-C35

T NA

240

6.60E-03

6.70E-04

1.26E+05

1.00E-01

1.00E-05

3.34E-07

3.0E-02

0.1

1.0

---

Yes

User-Specified Chemical 1

NA NA

User-Specified Chemical 2

NA NA

User-Specified Chemical 3

NA NA

User-Specified Chemical 4

NA NA

User-Specified Chemical 5

NA NA

Notes:

1. COLUMN Values in Red uses formula. Do not delete this column.

2. Always paste special "values" instead of using paste option.

3. For Metals and Inorganics if Henry's Law Constant is not available, put value as "ZERO (0)" instead of "NA"

4. Always replace "Blank Cell" with "NA".

MCL: Israeli Drinking Water Standard

SELECT COCs

MAIN MENU

MAIN

&L&8&D - &T - &F

MAIN MENU

I N P U T O U T P U T

MUTAGENIC EVALUATION

NON-MUTAGENIC EVALUATION

ENTER SITE INFORMATION

TIER 2

TIER 1

2. SELECT COCs

1. USER-SPECIFIED COCS & PROPERTIES (OPTIONAL)

3. EXPOSURE MODEL

5. PHYSICAL AND CHEMICAL PROPERTIES OF COCs

7. EXPOSURE FACTORS

10. PROTECTION OF GROUNDWATER USE AND SOIL &

GROUNDWATER PROTECTIVE OF INDOOR INHALATION

12. CHEMICAL-SPECIFIC INPUTS FOR OTHER ROUTES

OF EXPOSURE

4. TARGET RISK

6. TOXICOLOGICAL PROPERTIES OF COCs

8. FATE AND TRANSPORT PARAMETERS

11. PROTECTION OF SURFACE WATER

FORWARD MODE MENU

BACKWARD MODE MENU

9. BUILDING/ADVECTIVE VAPOR FLUX PARAMETERS

FOR VAPOR INTRUSION PATHWAY

TIER 3

&L&8&D - &T - &F

FORWARD MODE MENU

I N P U T - REPRESENTATIVE CONCENTRATIONS

O U T P U T - CALCULATED RISK

RESIDENT

COMMERCIAL/INDUSTRIAL WORKER

CONSTRUCTION WORKER

RESIDENT CHILD

RESIDENT ADULT

RESIDENT AGE-ADJUSTED INDIVIDUAL

RESIDENT

MAIN MENU

COMMERCIAL/INDUSTRIAL WORKER

CONSTRUCTION WORKER

&L&8&D - &T - &F

BACKWARD MODE MENU

OUT P U T - TARGET LEVELS

O U T P U T - ALLOWABLE CONCENTRATIONS

PROTECTION OF GROUNDWATER USE

SOIL & GROUNDWATER PROTECTIVE OF INDOOR INHALATION

( Includes Horizontal Migration )

PROTECTION OF SURFACE WATER

RESIDENT CHILD

RESIDENT ADULT

WITHOUT BIODEGRADATION

WITH BIODEGRADATION

WITHOUT BIODEGRADATION

WITH BIODEGRADATION

RESIDENT AGE-ADJUSTED INDIVIDUAL

RESIDENT

RESIDENT - WITHOUT BIODEGRADATION

COMMERCIAL/INDUSTRIAL WORKER - WITHOUT BIODEGRADATION

RESIDENT - WITH BIODEGRADATION

COMMERCIAL/INDUSTRIAL WORKER - WITH BIODEGRADATION

MAIN MENU

COMMERCIAL/INDUSTRIAL WORKER

CONSTRUCTION WORKER

User-Specificed COC

USER-SPECIFIED CHEMICALS OF CONCERN & PROPERTIES

SITE:

PHYSICAL AND CHEMICAL PROPERTIES

Chemicals

CAS #

MCL

Molecular Weight

Water Solubility

Henry's Law Constant

Org. Carbon Adsorption Coeff.

Soil-Water Partition Coefficient

Molecular Diffusion Coefficient

Saturated Vapor Pressure

Octanol-Water Partition Coefficient

Relative Bioavailability

(RBA)

Is Chemical Volatile?

(MW)

(S)

(H)

(Koc)

(Kd)

in air (Da)

in water (Dw)

(P)

(Kow)

(Yes/No)

[mg/L]

[g/g-mol]

[mg/L]

[L-water/L-air]

[cm3/g]

[cm2/s]

[mm Hg]

[cm3/g]

[-]

User-Specified Chemical 1

User-Specified Chemical 2

User-Specified Chemical 3

User-Specified Chemical 4

User-Specified Chemical 5

TOXICOLOGICAL PROPERTIES

Chemicals

Oral Slope Factor

(SFo)

Inhalation Unit Risk

(IUR)

Dermal Slope Factor

(SFd)

Oral Reference Dose

(RfDo)

Reference Concentration

(RfC)

Dermal Reference Dose

(RfDd)

Absorption Factor

Is Chemical Mutagen ? Yes/No

Oral

(RAFo)

Dermal

(RAFd)

[kg-day/mg]

[μg/m3]

[kg-day/mg]

[mg/kg-day]

[mg/m3]

[mg/kg-day]

[--]

User-Specified Chemical 1

User-Specified Chemical 2

User-Specified Chemical 3

User-Specified Chemical 4

User-Specified Chemical 5

PARAMETERS FOR DERMAL CONTACT PATHWAY

Chemicals

Type*

Dermal Perm. Constant

(Kp)

Relative Contribution of Permeability Coefficient (B)

Lag Time

(τevent )

Time to Reach Steady-State (t*)

Fraction Absorbed (FA)

[cm/hr]

[--]

[hr]

[--]

User-Specified Chemical 1

User-Specified Chemical 2

User-Specified Chemical 3

User-Specified Chemical 4

User-Specified Chemical 5

PARAMETERS FOR PROTECTION OF SURFACE WATER

Chemicals

Allowable Concentrations in Surface Water (mg/L)

Drinking Water Supply

Irrigation

Cool Water Fishery

Livestock and Wildlife Watering

Industrial

Cold Water Fishery

Water-body Contact Recreation

Boating and Canoeing

AQL

Acute Criteria for Stream U

User-Specified Chemical 1

User-Specified Chemical 2

User-Specified Chemical 3

User-Specified Chemical 4

User-Specified Chemical 5

*Type:

V: Volatile organic chemical

P: Polycyclic aromatic hydrocarbon

C: Chlorinated solvent

M: Metal

I: Inorganic chemical

CF: Carbon Fraction

For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

&L&10&D-&T-&F

MAIN MENU

SELECT COC

&L&8&D-&T-&F

* V: Volatile organic chemical P: Polycyclic aromatic hydrocarbon M: Metal C: Chlorinated solvent I: Inorganic chemical T: Total petroleum hydrocarbon fraction

SELECT CHEMICALS OF CONCERN

CHEMICALS

TYPE* and CAS #

MAIN MENU

		EXPOSURE MODEL
		SITE:
		Source and Route of Exposure		Resident*	Commercial/
Industrial Worker	Construction Worker **
		Surficial Soil (0 to 2 ft bgs)
			Outdoor Inhalation (vapors and particulates), Ingestion, and Dermal Contact
		Subsurface Soil ( > 2 ft bgs to watertable)
			Indoor Inhalation of Vapor Emissions
			Outdoor Inhalation of Vapor Emission
		Groundwater (First Zone)
			Indoor Inhalation of Vapor Emissions
			Outdoor Inhalation of Vapor Emissions
			Dermal Contact with Groundwater
			Domestic Water Use
		Soil Vapor
			Indoor Inhalation of Vapor Emissions
		Indoor Air
		Outdoor Air
		Ingestion of Fish (Adult Resident Only)
		Other Routes of Exposure
		Protection of Groundwater Use (For this pathway, the "Domestic Water Use" from groundwater for resident must be selected)
		Protection of Surface Water
		Soil & Groundwater Protective of Indoor Inhalation
			Resident (For this pathway, the "Indoor Inhalation of Vapor Emissions" from groundwater for resident

must be selected)

	Commercial/Industrial Worker (For this pathway, the "Indoor Inhalation of Vapor Emissions" from groundwater for non-residential worker must be selected)
* Includes calculations for child, adult, and age-adjusted individual.
** For construction worker, thickness of surficial soil is from ground surface to depth of construction.
	Not Applicable

&L&8&D - &T - &F N/A N/A N/A N/A N/A N/A N/A N/A

MAIN MENU

N/A N/A

			SITE: TARGET RISK
			Parameter	Symbol	Default
Target Risk	Target Risk Value Used	Comment
			Potential Carcinogenic Health Effects
			IELCR for individual chemical and each exposure pathway	TRind	1.00E-05	1.00E-05	Default Value
			Total IELCR for individual chemical	TRcoc	1.00E-05	1.00E-05	Default Value
			Individual Excessive Lifetime Cancer Risk for all chemicals and each exposure pathway	TRroe	NA	NA	Default Value
			Total IELCR for each exposure pathway	TRcum	1.00E-05	1.00E-05	Default Value
			Cumulative site-wide IELCR	TRsitewide	1.00E-04	1.00E-04	Default Value
			Potential Non-Carcinogenic Health Effects
			Hazard Quotient for individual chemical and each exposure pathway	HQind	1.0	1.0	Default Value
			Hazard Index for individual chemical	HIcoc	1.0	1.0	Default Value
			Hazard Quotient for all chemicals and each exposure pathway	HQroe	NA	NA	Default Value
			Hazard Index for each exposure pathway	HIcum	1.0	1.0	Default Value
			Cumulative site-wide hazard index	HRsitewide	1.0	1.0	Default Value
			IELCR: Individual Excess Lifetime Cancer Risk				For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

&L&8&D - &T - &F

MAIN MENU

PCP

SITE:

PHYSICAL AND CHEMICAL PROPERTIES OF CHEMICALS OF CONCERN

CHEMICALS OF CONCERN

Water Solubility

Henry's Law Constant

Org. Carbon Adsorption Coeff.

Soil-Water Sorption Coeff. Vadose Zone

Soil-Water Sorption Coeff. Saturated zone

Molecular Diffusion Coefficient

Saturated Vapor Pressure

Is Chemical Volatile

(Yes/No

Molecular Weight

Saturated Soil Concentration

Effective Saturated Concentration

Mole Fraction

EFFECTIVE

(S)

(H)

(Koc)

(Ksv)

(KSS)

in air (Da)

in water (Dw)

(P)

(MW)

Vapor

Groundwater

Soil

Solubility

Saturated Vapor Concentration

Soil Saturation Concentration

Koc for Calc

[mg/L]

[L-water/L-air]

[cm3/g]

[cm3-water /g-soil]

[cm3 /g]

[cm2/s]

[mm Hg]

[-]

[g/g-mol]

[mg/kg]

(mg/m3)

(mg/L)

(mg/kg)

Benzene

1.79E+03

2.27E-01

1.46E+02

8.75E-01

2.92E-01

8.95E-02

1.03E-05

9.48E+01

Yes

7.81E+01

1.82E+03

4.05E+05

1.79E+03

1.82E+03

1.00E+00

1.79E+03

4.05E+05

1.82E+03

1.46E+02

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

1.00E+00

0.00E+00

NA: Not Available

The values in red are calculated.

For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

&L&8&D - &T - &F

MAIN MENU

TOX

			SITE:		TOXICOLOGICAL PROPERTIES OF CHEMICALS OF CONCERN
			CHEMICALS OF CONCERN		Oral Slope Factor (SFo)	Inhalation Unit Risk
(IUR)	Dermal Slope Factor (SFd)	Oral Reference Dose (RfDo)	Reference Concentration
(RfC)	Dermal Reference Dose (RfDd)	Soil Absorbtion Factor		Parameters for Dermal Contact Pathway					Is Chemical Mutagen?
Yes/No	Retaive Bioavailability (RBA)
											Gastro Intestinal (GIABS)	Dermal (ABSd)	Dermal Permeability Constant (Kp)	Relative Contribution of Permeability Coefficient (B)	Lag Time
(τevent )	Time to Reach Steady-State (t*)	Fraction Absorbed (FA)
					[kg-day/mg]	[μg/m3]	[kg-day/mg]	[mg/kg-day]	[mg/m3]	[mg/kg-day]	[--]	[--]	[cm/hr]	[--]	[hr/event]	[hr]	[--]	[--]	[--]
				Benzene	5.50E-02	7.80E-06	5.50E-02	4.00E-03	3.00E-02	4.00E-03	1	NA	1.49E-02	0.051	0.288	0.691	1.00	No	1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			0.60
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			NA
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
																			1.00
			N/A: Not Applicable
			NA: Not Available														For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

&L&8&D-&T-&F

MAIN MENU

EXP

SITE: EXPOSURE FACTORS (CARCINOGENIC & NON-CARCINOGENIC CHEMICALS)
(Page 1 of 4)
Parameter	Symbol	Unit	Default Value	Value Used	Comment
Averaging Time for Carcinogen	ATc	year	70	70	Default Value
Averaging Time for Non-Carcinogen	ATnc	year	=ED	=ED	Default Value
Body Weight:
Resident Child	BW	kg	15	15	Default Value
Resident Adult	BW	kg	80	80	Default Value
Commercial/Industrial Worker	BW	kg	80	80	Default Value
Construction Worker	BW	kg	80	80	Default Value
Exposure Duration:
Resident Child	ED	year	6	6	Default Value
Resident Adult (carcinogenic)	ED	year	20	20	Default Value
Resident Adult (carcinogenic and non-carcinogenic for fish ingestion)	ED	year	26	26	Default Value
Resident Adult (non-carcinogenic)	ED	year	26	26	Default Value
Age-Adjusted Individual	ED	year	26	26	Default Value
Commercial/Industrial Worker	ED	year	25	25	Default Value
Construction Worker	ED	year	1	1	Default Value
Age-Adjusted for Dermal Contact Calc. (Dermal Contact Rate with GW):
Child	DCw-c	cm2-event/kg	891100	891100	Default Value
Adult	DCw-a	cm2-event/kg	1719550	1719550	Default Value
Age-Adjusted for Domestic Use Calc. (Dermal Whole-Body Contact Rate with GW):
Child	DCwb-c	cm2-event/kg	891100	891100	Default Value
Adult	DCwb-a	cm2-event/kg	1719550	1719550	Default Value
Exposure Frequency:
Resident Child	EF	day/year	350	350	Default Value
Resident Adult	EF	day/year	350	350	Default Value
Commercial/Industrial Worker	EF	day/year	250	250	Default Value
Construction Worker	EF	day/year	250	250	Default Value
Soil Ingestion Rate:
Resident Child	IRsoil	mg/day	200	200	Default Value
Resident Adult	IRsoil	mg/day	100	100	Default Value
Age-Adjusted Individual	IRs-aa	mg/kg	36750	36750	Default Value
Commercial/Industrial Worker	IRsoil	mg/day	100	100	Default Value
Construction Worker	IRsoil	mg/day	330	330	Default Value
Groundwater Ingestion Rate:
Resident Child	IRw	L/day	0.78	0.78	Default Value
Resident Adult	IRw	L/day	2.5	2.5	Default Value
Age-Adjusted (Direct Ingestion of GW)	IRw-aa	L/kg	328	328	Default Value
Commercial/Industrial Worker	IRw	L/day	2	2	Default Value
Fish Ingestion Rate:
Resident Adult	IRf	mg/day	site-specific	42857	Site-Specific Value
Indoor Inhalation Rate (hourly):
Resident Child	IRai	m3/hr	0.416	0.416	Default Value
Resident Adult	IRai	m3/hr	0.833	0.833	Default Value
Age-Adjusted (Indoor Inhalation rate)	IRai-aa	m3/kg	3147.060	3147.060	Default Value
Commercial/Industrial Worker	IRai	m3/hr	0.833	0.833	Default Value
Exposure Time for Indoor Inhalation:
Resident Child	ETin	hr/day	24	24	Default Value
Resident Adult	ETin	hr/day	24	24	Default Value
Commercial/Industrial Worker	ETin	hr/day	8	8	Default Value
Indoor Inhalation Rate (daily):
Resident Child	IRa	m3/day	10.0	10.0	Calculated
Resident Adult	IRa	m3/day	20.0	20.0	Calculated
Commercial/Industrial Worker	IRa	m3/day	6.7	6.7	Calculated
Outdoor Inhalation Rate (hourly):
Resident Child	IRao	m3/hr	0.416	0.416	Default Value
Resident Adult	IRao	m3/hr	0.833	0.833	Default Value
Commercial/Industrial Worker	IRao	m3/hr	0.833	0.833	Default Value
Construction Worker	IRao	m3/hr	1.62	1.62	Default Value
Exposure Time for Outdoor Inhalation:
Resident Child	ETout	hr/day	24	24	Default Value
Resident Adult	ETout	hr/day	24	24	Default Value
Commercial/Industrial Worker	ETout	hr/day	8	8	Default Value
Construction Worker	ETout	hr/day	8	8	Default Value
Outdoor Inhalation Rate (daily):
Resident Child	IRa	m3/day	10.0	10.0	Calculated
Resident Adult	IRa	m3/day	20.0	20.0	Calculated
Age-Adjusted (Outdoor Inhalation rate)	IRao-aa	m3/kg	3147.06	3147.1	Default Value
Commercial/Industrial Worker	IRa	m3/day	13.0	6.7	Calculated
Construction Worker	IRa	m3/day	13.0	13.0	Calculated
Skin Surface Area for Dermal Contact with Soil:
Resident Child	SA	cm2/day	2373	2373	Default Value
Resident Adult	SA	cm2/day	6032	6032	Default Value
Age-Adjusted (Dermal)	SAoa	mg/kg	103390	103390	Default Value
Commercial/Industrial Worker	SA	cm2/day	3527	3527	Default Value
Construction Worker	SA	cm2/day	3527	3527	Default Value
Skin Surface Area for Dermal Contact with Groundwater:
Resident Child	SAgw	cm2	6365	6365	Default Value
Resident Adult	SAgw	cm2	19652	19652	Default Value
Commercial/Industrial Worker	SAgw	cm2	3300	3300	Default Value
Construction Worker	SAgw	cm2	3300	3300	Default Value
					For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)
SITE: EXPOSURE FACTORS (CARCINOGENIC & NON-CARCINOGENIC CHEMICALS)
(Page 2 of 4)
Parameter	Symbol	Unit	Default Value	Value Used	Comment
Skin Surface Area for Dermal During Domestic Water Use:
Resident Child	SAwb	cm2	6365	6365	Default Value
Resident Adult	SAwb	cm2	19652	19652	Default Value
Soil to Skin Adherence Factor:
Resident Child	M	mg/cm2-event	0.2	0.2	Default Value
Resident Adult	M	mg/cm2-event	0.07	0.07	Default Value
Age-adjusted	M	mg/cm2-event	1	1.0	Default Value
Commercial/Industrial Worker	M	mg/cm2-event	0.12	0.12	Default Value
Construction Worker	M	mg/cm2-event	0.3	0.3	Default Value
Event Frequency for Dermal Contact with Soil:
Resident Child	EVsoil	event/day	1	1	Default Value
Resident Adult	EVsoil	event/day	1	1	Default Value
Commercial/Industrial Worker	EVsoil	event/day	1	1	Default Value
Construction Worker	EVsoil	event/day	1	1	Default Value
Event Frequency for Dermal Contact with Groundwater:
Resident Child	EVgw	event/day	1	1	Default Value
Resident Adult	EVgw	event/day	1	1	Default Value
Commercial/Industrial Worker	EVgw	event/day	1	1	Default Value
Construction Worker	EVgw	event/day	1	1	Default Value
Event Frequency for Dermal Contact During Domestic Water Use:
Resident Child	EVwb	event/day	1	1	Default Value
Resident Adult	EVwb	event/day	1	1	Default Value
Event Duration for Dermal Contact with Groundwater:
Resident Child	tevent	hr/event	1	1	Default Value
Resident Adult	tevent	hr/event	1	1	Default Value
Commercial/Industrial Worker	tevent	hr/event	1	1	Default Value
Construction Worker	tevent	hr/event	1	1	Default Value
Event Duration for Dermal Contact During Domestic Water Use:
Resident Child	twb-event	hr/event	0.54	0.54	Default Value
Resident Adult	twb-event	hr/event	0.71	0.71	Default Value
					For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)
SITE: ADDITIONAL EXPOSURE FACTORS FOR MUTAGENIC CHEMICALS
(Page 3 of 4)
Parameter	Symbol	Unit	Default Value	Value Used	Comment
Averaging Time for Mutagens	ATm	year	70	70	Default Value
Age-Dependent Adjustment Factor:
Age 0 - 2 Years	AF	--	10	10	Default Value
Age 2 - 6 Years	AF	--	3	3	Default Value
Age 6 - 16 Years	AF	--	3	3	Default Value
Age 16 - 30 Years	AF	--	1	1	Default Value
Body Weight:
Age 0 - 2 Years	BW	kg	15	15	Default Value
Age 2 - 6 Years	BW	kg	15	15	Default Value
Age 6 - 16 Years	BW	kg	80	80	Default Value
Age 16 - 30 Years	BW	kg	80	80	Default Value
Exposure Duration:
Age 0 - 2 Years	ED	year	2	2	Default Value
Age 2 - 6 Years	ED	year	4	4	Default Value
Age 6 - 16 Years	ED	year	10	10	Default Value
Age 16 - 30 Years	ED	year	10	10	Default Value
Exposure Frequency:
Age 0 - 2 Years	EF	day/year	350	350	Default Value
Age 2 - 6 Years	EF	day/year	350	350	Default Value
Age 6 - 16 Years	EF	day/year	350	350	Default Value
Age 16 - 30 Years	EF	day/year	350	350	Default Value
Soil Ingestion Rate:
Age 0 - 2 Years	IRsoil	mg/day	200	200	Default Value
Age 2 - 6 Years	IRsoil	mg/day	200	200	Default Value
Age 6 - 16 Years	IRsoil	mg/day	100	100	Default Value
Age 16 - 30 Years	IRsoil	mg/day	100	100	Default Value
Age-adjusted	IRsoil	mg/kg	166,833	166,833	Default Value
Groundwater Ingestion Rate:
Age 0 - 2 Years	IRw	L/day	0.78	0.78	Default Value
Age 2 - 6 Years	IRw	L/day	0.78	0.78	Default Value
Age 6 - 16 Years	IRw	L/kg	2.5	2.5	Default Value
Age 16 - 30 Years	IRw	L/day	2.5	2.5	Default Value
Age-adjusted	IRw	L/kg	1,020	1,020	Default Value
Exposure Time for Indoor Inhalation:
Age 0 - 2 Years	ETin	hr/day	24	24	Default Value
Age 2 - 6 Years	ETin	hr/day	24	24	Default Value
Age 6 - 16 Years	ETin	hr/day	24	24	Default Value
Age 16 - 30 Years	ETin	hr/day	24	24	Default Value
Age-adjusted	ETin	hr	604,800	604,800	Default Value
Exposure Time for Outdoor Inhalation:
Age 0 - 2 Years	ETin	hr/day	24	24	Default Value
Age 2 - 6 Years	ETin	hr/day	24	24	Default Value
Age 6 - 16 Years	ETin	hr/day	24	24	Default Value
Age 16 - 30 Years	ETin	hr/day	24	24	Default Value
Age-adjusted	ETin	hr	604,800	604,800	Default Value
					For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)
SITE: ADDITIONAL EXPOSURE FACTORS FOR MUTAGENIC CHEMICALS
	(Page 4 of 4)
Parameter	Symbol	Unit	Default Value	Value Used	Comment
Skin Surface Area for Dermal Contact with Soil:
Age 0 - 2 Years	SA	cm2	2373	2373	Default Value
Age 2 - 6 Years	SA	cm2	2373	2373	Default Value
Age 6 - 16 Years	SA	cm2	6032	6032	Default Value
Age 16 - 30 Years	SA	cm2	6032	6032	Default Value
Age-adjusted	SA	cm2/day	428,260	428,260	Default Value
Skin Surface Area for Dermal Contact with Groundwater:
Age 0 - 2 Years	SAgw	cm2	6365	6365	Default Value
Age 2 - 6 Years	SAgw	cm2	6365	6365	Default Value
Age 6 - 16 Years	SAgw	cm2	19652	19652	Default Value
Age 16 - 30 Years	SAgw	cm2	19652	19652	Default Value
Age-adjusted (Child)	SAgw	cm2-event/kg	4,752,533	4,752,533	Default Value
Age-adjusted (Adult)	SAgw	cm2-event/kg	3,439,100	3,439,100	Default Value
Skin Surface Area for Dermal Contact During Domestic Water Use:
Age 0 - 2 Years	SAwb	cm2	6365	6365	Default Value
Age 2 - 6 Years	SAwb	cm2	6365	6365	Default Value
Age 6 - 16 Years	SAwb	cm2	19652	19652	Default Value
Age 16 - 30 Years	SAwb	cm2	19652	19652	Default Value
Age-adjusted (child)	SAwb	cm2-event/kg	4,752,533	4,752,533	Default Value
Age-adjusted (Adult)	SAwb	cm2-event/kg	3,439,100	3,439,100	Default Value
Soil to Skin Adherence Factor:
Age 0 - 2 Years	M	mg/cm2-event	0.2	0.2	Default Value
Age 2 - 6 Years	M	mg/cm2-event	0.2	0.2	Default Value
Age 6 - 16 Years	M	mg/cm2-event	0.07	0.07	Default Value
Age 16 - 30 Years	M	mg/cm2-event	0.07	0.07	Default Value
Event Frequency for Dermal Contact with Soil:
Age 0 - 2 Years	EVsoil	event/day	1	1	Default Value
Age 2 - 6 Years	EVsoil	event/day	1	1	Default Value
Age 6 - 16 Years	EVsoil	event/day	1	1	Default Value
Age 16 - 30 Years	EVsoil	event/day	1	1	Default Value
Event Frequency for Dermal Contact with Groundwater:
Age 0 - 2 Years	EVgw	event/day	1	1	Default Value
Age 2 - 6 Years	EVgw	event/day	1	1	Default Value
Age 6 - 16 Years	EVgw	event/day	1	1	Default Value
Age 16 - 30 Years	EVgw	event/day	1	1	Default Value
Event Frequency for Dermal Contact During Domestic Water Use:
Age 0 - 2 Years	EVwb	event/day	1	1	Default Value
Age 2 - 6 Years	EVwb	event/day	1	1	Default Value
Age 6 - 16 Years	EVwb	event/day	1	1	Default Value
Age 16 - 30 Years	EVwb	event/day	1	1	Default Value
Event Duration for Dermal Contact with Groundwater:
Age 0 - 2 Years	tevent	hr/event	1	1	Default Value
Age 2 - 6 Years	tevent	hr/event	1	1	Default Value
Age 6 - 16 Years	tevent	hr/event	1	1	Default Value
Age 16 - 30 Years	tevent	hr/event	1	1	Default Value
Age-adjusted (Child)	tevent	hr/event	1	1	Default Value
Age-adjusted (adult)	tevent	hr/event	1	1	Default Value
Age-adjusted (Resident)	tevent	hr/event	1	1	Default Value
Event Duration for Dermal Contact During Domestic Water Use:
Age 0 - 2 Years	twb-event	hr/event	0.54	0.54	Default Value
Age 2 - 6 Years	twb-event	hr/event	0.54	0.54	Default Value
Age 6 - 16 Years	twb-event	hr/event	0.71	0.71	Default Value
Age 16 - 30 Years	twb-event	hr/event	0.71	0.71	Default Value
Age-adjusted (Child)	twb-event	hr/event	0.33	0.54	Site-Specific Value
Age-adjusted (adult)	twb-event	hr/event	0.25	0.71	Site-Specific Value
Age-adjusted (Resident)	twb-event	hr/event	0.25	0.67	Site-Specific Value
					For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

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F&T

			SITE: FATE AND TRANSPORT PARAMETERS
			Parameter	Symbol	Unit	Default
Value	Soil Type 2 Default	Soil Type 3 Default	Value Used	Comment
			SOIL PARAMETERS:
			Soil Source Dimension Parallel to Wind Direction	Wa	cm	1500	1500	1500	1500	Default Value
			Depth to Subsurface Soil Sources from Ground Surface	dts	cm	100	91.44	91.44	100	Default Value
			Depth of Surficial Soil from Ground Surface	ds	cm	60.96	91.44	91.44	60.96	Default Value
			Depth to Soil Vapor Measurement from Ground Surface	dsv	cm	100	91.44	91.44	100	Default Value
			VADOSE ZONE:
			Total Soil Porosity	qT	cm3/cm3-soil	0.43	0.44	0.44	0.43	Default Value
			Volumetric Water Content	qws	cm3/cm3	0.15	0.17	0.21	0.15	Default Value
			Volumetric Air Content	qas	cm3/cm3	0.28	0.27	0.23	0.28	Calculated
			Thickness	hv	cm	295	295	295	295	Calculated
			Dry Soil Bulk Density	rs	g/cm3	1.5	1.5	1.5	1.5	Default Value
			Fractional Organic Carbon Content	focv	g-C/g-soil	0.006	0.006	0.006	0.006	Default Value
			SOIL IN CRACKS:
			Total Soil Porosity	qTcrack	cm3/cm3-soil	0.43	0.44	0.44	0.43	Default Value
			Volumetric Water Content	qwcrack	cm3/cm3	0.15	0.17	0.21	0.15	Default Value
			Volumetric Air Content	qacrack	cm3/cm3	0.28	0.27	0.23	0.28	Calculated
			CAPILLARY FRINGE:
			Total Soil Porosity	qTcap	cm3/cm3-soil	0.43	0.44	0.44	0.43	Default Value
			Volumetric Water Content	qwcap	cm3/cm3	0.39	0.40	0.40	0.39	Calculated
			Volumetric Air Content	qacap	cm3/cm3	0.04	0.04	0.04	0.04	Calculated
			Thickness	hc	cm	5	5	5	5	Default Value
			GROUNDWATER PARAMETERS:
			Depth to GW from Ground Surface	LGW	cm	300	300	300	300	Default Value
			GW Source Dimension Parallel to GW Flow Direction	Wga	cm	3000	1500	1500	3000	Default Value
			GW Source Dimension Perpendicular to GW Flow Direction	Y	cm	3000	1500	1500	3000	Default Value
			GW Source Dimension Parallel to GW Flow Direction	Wga	cm	3000	1500	1500	3000	Default Value
			Total Porosity in the Saturated Zone	qTS	cm3/cm3	0.4	N/A	N/A	0.4	Default Value
			Dry Soil Bulk Density (Saturated Zone)	rss	g/cm3	1.5	N/A	N/A	1.5	Default Value
			Fractional Organic Carbon Content in the Saturated Zone	focs	g-C/g-soil	0.002	N/A	N/A	0.002	Default Value
			Groundwater Mixing Zone Thickness	dgw	cm	200	200	200	200	Default Value
			Hydraulic Conductivity in the Saturated Zone	K	cm/year	730000	625000	625000	730000	Default Value
			Hydraulic Gradient in the Saturated Zone	i	cm/cm	0.001	0.004	0.004	0.001	Default Value
			Groundwater Darcy Velocity	Ugw	cm/year	730	2500	2500	730	Calculated
			Infiltration Rate of Water Through Vadose Zone	I	cm/year	21	14	14	21	Default Value
			AMBIENT AIR PARAMETERS:
			Breathing Zone Height	da	cm	200	200	200	200	Default Value
			Inverse of Mean Concentration at Center of a 0.5-acre Square Source for chronic volatilization factor (VF) for unlimited source and mass limit equations	Q/C	(g/m2-s)/(kg/m3)	68.18	81.64	81.64	68.18	Default Value
			Inverse of Mean Concentration at Center of a 0.5-acre Square Source for wind driven particulate emission factor (PEF)	Q/C	(g/m2-s)/(kg/m3)	93.77			93.77	Default Value
			Fraction of Vegetative Cover	V	m2/m2	0.5	0.5	0.5	0.50	Default Value
			Mean Annual Wind Speed	Um	m/s	4.69	4.69	4.69	4.69	Default Value
			Equivalent Threshold Value of Windspeed	Ut	m/s	11.32	11.32	11.32	11.32	Default Value
			Windspeed Distribution Function from Cowherd et. al, 1985	F(x)	unitless	0.194	0.194	0.194	0.194	Default Value
			Dispersion correction factor	FD	unitless	0.185			0.185	Default Value
			Volatilization Factor for Domestic Water Use	Kf	L/m3	0.5	0.5	0.5	0.5	Default Value
			PARTICULATE EMISSION RATE
			Residential and Non-Residential	Pe	g/cm2sec	6.90E-14	6.90E-14	6.90E-14	6.90E-14	Default Value
			Construction Worker	Pe	g/cm2sec	6.90E-09	6.90E-09	6.90E-09	6.90E-09	Default Value
			AVERAGING TIME FOR VAPOR FLUX:
			Resident Child	t	sec	1.89E+08	1.89E+08	1.89E+08	1.89E+08	Calculated
			Age-Adjusted Individual	t	sec	8.20E+08	9.46E+08	8.20E+08	8.20E+08	Calculated
			Resident Adult	t	sec	6.31E+08	7.57E+08	6.31E+08	6.31E+08	Calculated
			Non-Residential Worker	t	sec	7.88E+08	7.88E+08	7.88E+08	7.88E+08	Calculated
			Construction Worker	t	sec	3.15E+07	3.15E+07	3.15E+07	3.15E+07	Calculated
			Resident (for mutagenic chemicals)	t	sec	8.20E+08			8.20E+08	Calculated
			The values in red are calculated.
										For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

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BldgP

SITE: BUILDING/ADVECTIVE VAPOR FLUX PARAMETERS FOR VAPOR INTRUSION PATHWAY
Parameter	Symbol	Units	Default	Value Used
Default Attenuation Factors
Subsurface Soil/Soil Vapor to Indoor Air	αs	unitless	0.03
Groundwater to Indoor Air	αgw	unitless	0.001
Residential Structure
Surface Area of Building at or Below Grade	AB	cm2	Calculated	1.50E+06
Building Ventilation Rate	Qbldg	cm3/s	Calculated	4.58E+04
Distance from Bottom of Slab to Top of Subsurface Soil	LT	cm	Calculated	90
Distance from Bottom of Slab to Soil Vapor Measurement			Calculated	90
Distance from Bottom of Slab to Groundwater Table			Calculated	290
Volumetric Flow Rate of Soil Gas into the Buidling	Qsoil	cm3/s	136.1	136.1
Qsoil is either a user-input above, or calculated below if Qsoil above is "NA".
Volumetric Flow Rate of Soil Gas into the Building	Qsoil	cm3/s	Calculated	0.00E+00
Buidling Foundation or Slab Thickness	Lcrack	cm	10	10
Total Area of Cracks	Acrack	cm2	Calculated	490
Soil-Building Pressure Difference	∆P	gm/cm-s2	40	40
Viscosity of Air	μ	gm/cm-s	Calculated	1.80E-04
Temperature of Soil/Groundwater	TS	°C	25	25
Vapor Permeability for Soils below Building	kv	cm2	1.00E-08	1.00E-08
Air Exchange Rate	ER	l/24 hr	10.8	10.8
Air Exchange Rate	ER	1/sec	0.00013	0.00013
Building Height	HB	cm	244	244
Building Width	WB	cm	1225	1225
Building Length	LB	cm	1225	1225
Depth below Grade to Bottom of Building Floor	LF	cm	10	10
Floor-Wall Seam Gap	w	cm	0.1	0.1
Equivalent Crack Radius	rcrack	cm	Calculated	0.1
Floor-Wall Seam Perimeter	Xcrack	cm	Calculated	4900
Commercial/Industrial Worker
Surface Area of Building at or Below Grade	AB	cm2	Calculated	1.50E+07
Building Ventilation Rate	Qbldg	cm3/s	Calculated	1.88E+06
Distance from Bottom of Slab to Top of Subsurface Soil	LT	cm	Calculated	80
Distance from Bottom of Slab to Soil Vapor Measurement			Calculated	80
Distance from Bottom of Slab to Groundwater Table			Calculated	280
Volumetric Flow Rate of Soil Gas into the Building	Qsoil	cm3/s	5626	5626
Qsoil is either a user-input above, or calculated below if Qsoil above is "NA".
Volumetric Flow Rate of Soil Gas into the Building	Qsoil	cm3/s	Calculated	0.00E+00
Building Foundation or Slab Thickness	Lcrack	cm	20	20
Total Area of Cracks	Acrack	cm2	Calculated	1549.2
Soil-Building Pressure Difference	∆P	gm/cm-s2	40	40
Viscosity of Air	μ	gm/cm-s	Calculated	1.80E-04
Temperature of Soil/Groundwater	TS	°C	25	25
Vapor Permeability for Soils below Building	kv	cm2	1.00E-08	1.00E-08
Air Exchange Rate	ER	l/24 hr	36	36
Air Exchange Rate	ER	1/s	0.00042	0.00042
Building Height	HB	cm	300	300
Building Width	WB	cm	3873	3873
Building Length	LB	cm	3873	3873
Depth below Grade to Bottom of Building Floor	LF	cm	20	20
Floor-Wall Seam Gap	w	cm	0.1	0.1
Equivalent Crack Radius	rcrack	cm	Calculated	0.1
Floor-Wall Seam Perimeter	Xcrack	cm	Calculated	15492
The values in red are calculated.				For exclusive use by North Dakota Department of Environmental Quality (NDDEQ)

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GRP

SITE: PROTECTION OF GROUNDWATER USE AND SOIL &

GROUNDWATER PROTECTIVE OF INDOOR INHALATION

Parameter	Symbol	Unit	Default Value	Value Used	Comment
Distance from the Downgradient Edge of the Groundwater Source to the Point of Exposure	Xpoe	ft	variable	100	Site-specific
Longitudinal Dispersivity	ax	ft	variable	10.00	Calculated
Transverse Dispersivity	ay	ft	variable	3.33	Calculated
Vertical Dispersivity	az	ft	variable	0.50	Calculated
Distance from the Downgradient Edge of the Groundwater Source to the Point of Demonstration	Xpod	ft	variable	50	Site-specific
Longitudinal Dispersivity	ax	ft	variable	5.0	Calculated
Transverse Dispersivity	ay	ft	variable	1.7	Calculated

This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated Jul 16, 2025.