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PUBLIC HEALTH ASSESSMENT

ARMOUR ROAD SITE
NORTH KANSAS CITY, CLAY COUNTY, MISSOURI


APPENDIX A

Figure 1: Armour Road Site Location Map

Figure 2: Armour Road Site Map

Armour Road Site Location Map
Figure 1. Armour Road Site Location Map

Armour Road Site Location Map
Figure 2. Armour Road Site Map



APPENDIX B

Table 1: Armour Road Site Maximum Soil Contamination Levels and Health Comparison Values

Table 2: Armour Road Site Maximum Groundwater Contamination Levels and Health Comparison Values


Table 1.

ContaminantMaximum DetectedValueATSDR ComparisonValue* DOH ASL Value**
Arsenic121,000 20 11
Antimony 9,650 20 23
Lead 16,500N/A240
Mercury 156N/A 17
Thallium 1,360N/A 3.9
Benzo(a)pyrene 24 0.1 0.68
Cadmium 2,220 40 28
2,4-Dichlorophenol 258.5 200170
PCP 250 50 42
N/A = not available
* EMEG or RMEG for child (EMEG = Environmental Media Evaluation Guide (ATSDR))
(RMEG = Reference Dose Media Evaluation Guide)
** Missouri Department of Health Any-Use Soil Level




Table 2.

Armour Road Site Maximum Groundwater Contamination Levels and Health Comparison Values All values in parts per million (ppm)
ContaminantMaximum DetectedValueATSDR ComparisonValue*EPA MCL**
Arsenic2,0600.0030.05
PCP8,0620.010.001
2,4-D 940.10.07
2,4,5-T 3200.1N/A
Cadmium 10.0070.005
Lead 5.8N/A0.015***
Mercury 0.0330.02a0.002a
Thallium 3.50.00040.002
2,4-Dimethylphenol 27.5660.2N/A
2,4-Dichlorophenol 7.1680.03N/A
Phenol 27.326N/A
2,4,5-Trichlorophenol 5.211N/A
2,4,6-Trichlorophenol 4.520.4N/A
Selenium 0.480.020.05
Antimony 6.10.0040.006
N/A = not available
*EMEG or RMEG for child (EMEG = Environmental Media Evaluation Guide (ATSDR))(RMEG = Reference Dose Media Evaluation Guide)
** EPA MCL = Environmental Protection Agency's Maximum Contaminant Level
*** EPA Action Level
a = Inorganic mercury


APPENDIX C

Calculations for Cancer Risk

Narrative explanation:

Averaging the ingested dose over a 70 year lifetime, then taking that value by the EPA oral slopefactor results in a carcinogenic risk of .00195 (1.95 x 10-3). EPA and DOH consider anyincreased lifetime risk of developing cancer which is greater than 1 x 10-4 to 1 x 10-6 to beunacceptable. A cancer risk of 1 x 10-4 and 1 x 10-6 indicates that an additional 1 in 10,000 and 1in 1,000,000 persons would be expected to get cancer above the normal expected cancer rate. The calculated cancer rate of 1.95 x 10-3 would add an additional cancer incidence of 1.95 peoplein every 1,000 people. These incidences of cancer would be in addition to the approximately 40%of the population who will develop cancer in their lifetime.

Exposure Factor Calculation:

2 days/week x 12 weeks/year x 5 years = 0.0047
            365 days/year x 70 years

Dose Calculation

Dose = concentration x amount ingested x exposure factor x 10-6 conversion factor
                        Body weight

Assumptions:
Concentration of Arsenic in soil-121,000 mg/kg
Amount of soil ingested per day-100 mg/d
body weight-43 kg

121,000 mg/kg x 100 mg/d x 0.0047 x 10-6 mg/kg = 0.0013 mg/kg/d
                        43 kg

Risk calculation = calculated dose
                            EPA slope factor

                        0.0013 mg/kg/d = 0.00195 or 1.95 x 10-3 risk
                        1.5 mg/kg/d


Table of Contents

  
 
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Agency for Toxic Substances and Disease Registry, 4770 Buford Hwy NE, Atlanta, GA 30341
Contact CDC: 800-232-4636 / TTY: 888-232-6348

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