PUBLIC HEALTH ASSESSMENT
ST. JULIENS CREEK ANNEX (U.S. NAVY)
CHESAPEAKE, CHESAPEAKE COUNTY, VIRGINIA
TABLES (Cont.)
Table 3. Contaminants Detected Above CVs in On-Site Shallow Groundwater at St. Juliens Creek Annex, Chesapeake, VA.
| Contaminant | Exceeds / Detects / Samples | Max (ppb) | CV (ppb) | CV Source | Max Location | Date |
| VOCs | ||||||
| 1,2-dichloroethene (total) | 2 / 4 / 32 | 550 D | 55 | RBC-N | 9,12,13,14 | 1996 |
| Benzene | 3 / 3 / 83 | 1,070 | 0.6 | CREG | Building 201 | 1995 |
| Ethylbenzene | 1 / 7 / 83 | 983 | 700 | LTHA | Building 201 | 1995 |
| Methylene chloride | 19 / 66 / 69 | 380 BDJ | 5 | CREG | 9,12,13,14 | 1996 |
| Toluene | 2 / 7 / 83 | 1,814 | 200 | EMEG-int-child | Building 201 | 1995 |
| Total xylenes | 1 / 9 / 83 | 2,589 | 2,000 | EMEG-int-child | Building 201 | 1995 |
| Trichloroethene | 6 / 8 / 69 | 5,200 D | 5 | MCL | 9,12,13,14 | 1996 |
| Vinyl chloride | N/A | 12 | 0.03 | CREG | Site 21 | 2003 |
| SVOCs | ||||||
| 4-chloro-3-methylphenol | 1 / 66 | 1 J | N/A | N/A | Site 3 | 1996 |
| Acenaphthylene | 3 / 80 | 412 | N/A | N/A | Building 201 | 1995 |
| Benzo(a)anthracene | 1 / 1 / 69 | 1 J | 0.092 | RBC-C | Site 3 | 1996 |
| Bis(2-ethylhexyl)phthalate | 4 / 14 / 69 | 70 | 4.8 | RBC-C | Site 15 | 1996 |
| Naphthalene | 2 / 8 / 83 | 1,129 | 100 | LTHA | Building 201 | 1995 |
| Pentachlorophenol | 2 / 2 / 69 | 1 J | 0.3 | CREG | Site 3 | 1996 |
| Phenanthrene | 4 / 80 | 148 | N/A | N/A | Building 201 | 1995 |
| Pesticides/PCBs | ||||||
| Heptachlor | 1 / 1 / 80 | 0.024 J | 0.008 | CREG | Site 3 | 1999 |
| Explosives | ||||||
| 1,3-dinitrobenzene | N/A | 1.1 J | 1 | RMEG-child | Site 21 | 2003 |
| RDX | N/A | 5.3 J | 0.3 | CREG | Site 21 | 2003 |
| Inorganics | ||||||
| Aluminum | 6 / 65 / 69 | 87,400 | 20,000 | EMEG-int-child | Site 5 | 1999 |
| Antimony | 3 / 8 / 68 | 47.7 | 4 | RMEG-child | 9,12,13,14 | 1996 |
| Arsenic | 40 / 40 / 69 | 56.5 | 0.02 | CREG | Site 4 | 1996 |
| Barium | 4 / 69 / 69 | 787 | 700 | RMEG-child | Site 3 | 1996 |
| Beryllium | 1 / 21 / 69 | 2 | 20 | EMEG-chr-child | SWMU 20 | 1991 |
| Cadmium | 5 / 15 / 69 | 11.5 | 2 | EMEG-chr-child | Site 5 | 1999 |
| Calcium | 69 / 69 | 539,000 | N/A | N/A | Site 3 | 1999 |
| Chromium | 9 / 31 / 69 | 96 | 30 | RMEG-child | SWMU 20 | 1991 |
| Cobalt | 4 / 41 / 69 | 257 | 100 | EMEG-int-child | Site 5 | 1999 |
| Copper | 1 / 51 / 69 | 44 | 300 | EMEG-int-child | Building 1566 | 1991 |
| Iron | 45 / 69 / 69 | 123,000 | 11,000 | RBC-N | Site 3 | 1996 |
| Lead | 9 / 43 / 83 | 152 | 15 | EPA | SWMU 13/23 | 1991 |
| Magnesium | 69 / 69 | 352,000 | N/A | N/A | Site 3 | 1996 |
| Manganese | 49 / 69 / 69 | 5,440 | 500 | RMEG-child | Site 3 | 1999 |
| Nickel | 5 / 42 / 69 | 360 | 100 | LTHA | Site 5 | 1999 |
| Potassium | 69 / 69 | 105,000 | N/A | N/A | Site 4 | 1999 |
| Silver | 1 / 21 / 69 | 400 | 50 | RMEG-child | Site 4 | 1999 |
| Sodium | 69 / 69 | 2,440,000 | N/A | N/A | Site 3 | 1996 |
| Thallium | 15 / 16 / 69 | 12.7 | 0.5 | LTHA | Site 4 | 1996 |
| Vanadium | 8 / 32 / 69 | 127 | 30 | EMEG-int-child | SWMU 20 | 1991 |
Sources: LANTDIV 1992b, 1995, 1996, 2003b, 2003e; EPA 1999b.
Note: The numbers of exceedences, detections, and samples, do not include data
from LANTDIV 2003e.
Key:
| B | not detected significantly above the level reported in laboratory or field blanks |
| CREG | cancer risk evaluation guide (ATSDR) |
| CV | comparison value |
| D | dilution sample |
| EMEG-chr-child | exposure media evaluation guide (ATSDR), child, chronic exposure |
| EMEG-int-child | exposure media evaluation guide (ATSDR), child, intermediate exposure |
| J | analyte present, but value may not be accurate or precise |
| LTHA | Lifetime Health Advisory |
| MCL | Maximum Contaminant Limit |
| ppb | parts per billion |
| RBC-C | risk-based level (EPA), cancer |
| RBC-N | risk-based level (EPA), non-cancer effects |
| RDX | cyclotrimethylenetrinitramine |
| RMEG-child | reference media evaluation guide (ATSDR), child |
| SVOC | semivolatile organic compound |
| VOC | volatile organic compound |
Table 4. Contaminants Detected Above CVs
in On-Site Deep Groundwater at St. Juliens Creek Annex, Chesapeake, VA.
| Contaminant | Exceeds / Detects / Samples | Max (ppb) | CV (ppb) | CV Source | Max Location | Date |
| SVOCs | ||||||
| Bis(2-ethylhexyl)phthalate | 1 / 6 / 18 | 5 J | 4.8 | RBC-C | Site 4 | 1999 |
| Pesticides/PCBs | ||||||
| Heptachlor | 1 / 1 / 18 | 0.033 J | 0.008 | CREG | Site 5 | 1999 |
| Explosives | ||||||
| RDX | 1 / 1 / 3 | 1.6 J | 0.3 | CREG | Site 5 | 1999 |
| Inorganics | ||||||
| Arsenic | 7 / 7 / 18 | 6.5 J | 0.02 | CREG | Site 4 | 1999 |
| Calcium | 18 / 18 | 286,000 | N/A | N/A | Site 4 | 1999 |
| Iron | 4 / 18 / 18 | 68,500 | 11,000 | RBC-N | Site 4 | 1999 |
| Magnesium | 18 / 18 | 151,000 | N/A | N/A | Site 4 | 1999 |
| Manganese | 6 / 18 / 18 | 12,500 | 500 | RMEG-child | Site 4 | 1999 |
| Potassium | 18 / 18 | 33,100 J | N/A | N/A | Site 4 | 1999 |
| Sodium | 18 / 18 | 698,000 | N/A | N/A | Site 4 | 1999 |
| Thallium | 5 / 5 / 18 | 2.7 J | 0.5 | LTHA | Site 3 | 1999 |
Sources: LANTDIV 2003b.
Key:
| CREG | cancer risk evaluation guide (ATSDR) |
| CV | comparison value |
| J | analyte present, but value may not be accurate or precise |
| LTHA | Lifetime Health Advisory |
| ppb | parts per billion |
| RBC-C | risk-based level (EPA), cancer |
| RBC-N | risk-based level (EPA), non-cancer effects |
| RMEG-child | reference media evaluation guide (ATSDR), child |
| SVOCs | semivolatile organic compounds |
Table 5. Contaminants Detected Above CVs
in On-Site Soil at St. Juliens Creek Annex, Chesapeake, VA.
| Contaminant | Exceeds / Detects / Samples | Max (ppm) | CV (ppm) | CV Source | Max Location | Date |
| VOCs | ||||||
| Chloromethane | 3 / 114 | 0.005 J | N/A | N/A | Site 5 | 1999 |
| SVOCs | ||||||
| Acenaphthylene | 23 / 110 | 4.6 | N/A | N/A | Site 19 | 2003 |
| Benzo(a)anthracene | 5 / 80 / 110 | 15 | 3.9 | RBC-C | EPIC AOC 1 | 2001 |
| Benzo(a)pyrene | 66 / 78 / 110 | 11 | 0.1 | CREG | EPIC AOC 1 | 2001 |
| Benzo(b)fluoranthene | 5 / 89 / 110 | 12 | 3.9 | RBC-C | EPIC AOC 1 | 2001 |
| Benzo(g,h,i)perylene | 73 / 110 | 3.1 | N/A | N/A | EPIC AOC 1 | 2001 |
| Dibenz(a,h)anthracene | 4 / 15 / 110 | 1.5 | 0.39 | RBC-C | EPIC AOC 1 | 2001 |
| Phenanthrene | 65 / 110 | 6.3 J | N/A | N/A | Site 4 | 1999 |
| Pesticides/PCBs | ||||||
| 4,4'-DDE | 2 / 79 / 113 | 4.7 J | 2 | CREG | Site 5 | 1999 |
| 4,4'-DDT | 2 / 84 / 113 | 3.1 J | 2 | CREG | Site 5 | 1999 |
| Aroclor-1254 | 1 / 25 / 109 | 9.4 D | 1 | EMEG-chr-child | Site 16 | 1996 |
| Aroclor-1260 | 2 / 13 / 109 | 6.3 | 1.4 | RBC-C | Site 4 | 1999 |
| Dieldrin | 5 / 21 / 109 | 0.072 J | 0.04 | CREG | Site 4 | 1999 |
| Inorganics | ||||||
| Antimony | 5 / 61 / 104 | 162 | 20 | RMEG-child | Site 3 | 1999 |
| Arsenic | 100 / 113 / 118 | 152 | 0.5 | CREG | Site 5 | 1999 |
| Barium | 2 / 118 / 118 | 5,970 | 4,000 | RMEG-child | Site 5 | 1999 |
| Cadmium | 10 / 92 / 114 | 396 | 10 | EMEG-chr-child | Site 19 | 1996 |
| Calcium | 112 / 112 | 49,100 | N/A | N/A | Site 4 | 1999 |
| Chromium | 6 / 115 / 118 | 1,040 | 200 | RMEG-child | Site 19 | 1996 |
| Copper | 5 / 112 / 112 | 42,500 | 2,000 | EMEG-int-child | Site 19 | 1996 |
| Lead | 26 / 118 / 118 | 7,910 | 400 | EPA action level | Site 5 | 1996 |
| Magnesium | 112 / 112 | 5,080 | N/A | N/A | Site 5 | 1999 |
| Manganese | 2 / 112 / 112 | 935 | 3,000 | RMEG-child | Site 3 | 1999 |
| Nickel | 1 / 110 / 112 | 1,400 | 1,000 | RMEG-child | Site 4 | 1996 |
| Potassium | 112 / 112 | 4,870 | N/A | N/A | Site 4 | 1999 |
| Sodium | 107 / 112 | 6,410 | N/A | N/A | Site 5 | 1999 |
| Vanadium | 2 / 111 / 112 | 5,330 | 200 | EMEG-int-child | Site 4 | 1996 |
Sources: LANTDIV 1992b, 1995, 1996, 2003b, 2003e; EPA 1999b.
Note: The numbers of exceedences, detections, and samples, do not include data
from LANTDIV 2003e.
Key:
| B | not detected significantly above the level reported in laboratory or field blanks |
| CREG | cancer risk evaluation guide (ATSDR) |
| CV | comparison value |
| D | dilution sample |
| DDD | dichlorodiphenyldichloroethane |
| DDE | dichlorodiphenyldichloroethylene |
| EMEG-chr-child | exposure media evaluation guide (ATSDR), child, chronic exposure |
| PCBs | polychlorinated biphenyls |
| ppm | parts per million |
| RBC-C | risk-based level (EPA), cancer |
| RMEG-child | reference media evaluation guide (ATSDR), child |
| SVOCs | semivolatile organic compounds |
| VOCs | volatile organic compounds |
Table 6. Contaminants Detected Above CVs
in On-Site Surface Water at St. Juliens Creek Annex, Chesapeake, VA.
| Contaminant | Exceeds / Detects / Samples | Max (ppb) | CV (ppb) | CV Source | Max Location | Date |
| SVOCs | ||||||
| Benzo(g,h,i)perylene | 1 / 22 | 3 J | N/A | N/A | Site 4 | 1999 |
| Dibenz(a,h)anthracene | 1 / 1 / 22 | 3 J | 0.0092 | RBC-C | Site 4 | 1999 |
| Indeno(1,2,3-cd)pyrene | 1 / 1 / 22 | 2 J | 0.092 | RBC-C | Site 4 | 1999 |
| Inorganics | ||||||
| Aluminum | 3 / 24 / 24 | 95,000 | 20,000 | EMEG-int-child | Site 1 | 2001 |
| Antimony | 1 / 4 / 24 | 5.1 B | 4 | RMEG-child | Site 4 | 1999 |
| Arsenic | 11 / 11 / 24 | 65.8 L | 0.02 | CREG | Site 1 | 2001 |
| Beryllium | 1 / 15 / 24 | 22.6 | 20 | EMEG-chr-child | Site 3 | 1999 |
| Cadmium | 2 / 15 / 24 | 8.4 | 2 | EMEG-chr-child | Site 3 | 1999 |
| Calcium | 24 / 24 | 405,000 | N/A | N/A | Site 3 | 1999 |
| Chromium | 1 / 12 / 24 | 162 | 30 | RMEG-child | Site 1 | 2001 |
| Cobalt | 2 / 22 / 24 | 255 | 100 | EMEG-int-child | Site 3 | 1999 |
| Copper | N/A | 530 | 300 | EMEG-int-child | Site 1 | 2001 |
| Iron | 7 / 22 / 24 | 141,000 | 11,000 | RBC-N | Site 1 | 2001 |
| Lead | 4 / 19 / 24 | 4,760 | 15 | EPA | Site 5 | 1999 |
| Magnesium | 24 / 24 | 632,000 | N/A | N/A | Site 4 | 1999 |
| Manganese | 14 / 24 / 24 | 7,590 | 500 | RMEG-child | Site 5 | 1999 |
| Nickel | 2 / 24 / 24 | 364 | 100 | LTHA | Site 3 | 1999 |
| Potassium | 24 / 24 | 225,000 | N/A | N/A | Site 4 | 1999 |
| Sodium | 24 / 24 | 5,090,000 | N/A | N/A | Site 4 | 1999 |
| Thallium | 1 / 1 / 24 | [4.1] B | 0.5 | LTHA | Blows Creek | 1999 |
| Vanadium | 1 / 19 / 24 | 196 | 30 | EMEG-int-child | Site 1 | 2001 |
| Zinc | 1 / 24 / 24 | 4,690 | 3,000 | EMEG-chr-child | Site 5 | 1999 |
Sources: LANTDIV 1992b, 1995, 1996, 2002, 2003b; EPA 1999b.
Note: The numbers of exceedences, detections, and samples, do not include data
from LANTDIV 2002.
Key:
| + | results reported from diluted analyses |
| […] | analyte present, but as values approach the IDL the quantitation limit may not be accurate |
| B | not detected significantly above the level reported in laboratory or field blanks |
| CV | comparison value |
| EMEG-int-child | exposure media evaluation guide (ATSDR), child, intermediate exposure |
| LTHA | Lifetime Health Advisory |
| ppb | parts per billion |
| RBC-N | risk-based level (EPA), non-cancer effects |
| RMEG-child | reference media evaluation guide (ATSDR), child |
Table 7. Contaminants Detected Above CVs
in On-Site Sediment at St. Juliens Creek Annex, Chesapeake, VA.
| Contaminant | Exceeds / Detects / Samples | Max (ppm) | CV (ppm) | CV Source | Max Location | Date |
| SVOCs | ||||||
| Acenaphthylene | 10 / 26 | 0.36 | N/A | N/A | Site 4 | 2003 |
| Benzo(a)anthracene | 1 / 22 / 28 | 4.1 | 3.9 | RBC-C | Blows Creek | 1999 |
| Benzo(a)pyrene | 18 / 21 / 28 | 3.8 J | 0.1 | CREG | Blows Creek | 1999 |
| Benzo(b)fluoranthene | 1 / 23 / 28 | 5.9 J* | 3.9 | RBC-C | Blows Creek | 1999 |
| Benzo(g,h,i)perylene | 19 / 28 | 2.6 | N/A | N/A | Site 4 | 2003 |
| Bis(2-chloroethoxy)methane | N/A | 1 | N/A | N/A | AOC 1 | 2003 |
| Dibenz(a,h)anthracene | 1 / 11 / 27 | 1.2 | 0.39 | RBC-C | Site 4 | 2003 |
| Phenanthrene | 16 / 28 | 4.8 | N/A | N/A | Blows Creek | 1999 |
| Pesticides/PCBs | ||||||
| Aldrin | N/A | 0.1 | 0.04 | CREG | N/A | 2003 |
| Dioxins/Furans | ||||||
| Total Dioxins | N/A | 0.000091 | 0.00005 | CREG | N/A | 2003 |
| Inorganics | ||||||
| Antimony | 1 / 14 / 27 | 173 J | 20 | RMEG-child | Site 3 | 1999 |
| Arsenic | 26 / 27 / 28 | 61.1 | 0.5 | CREG | N/A | 2003 |
| Calcium | 28 / 28 | 18,300 | N/A | N/A | Site 4 | 1999 |
| Lead | 5 / 28 / 28 | 1,560 | 400 | EPA Action Level | Blows Creek | 1999 |
| Magnesium | 28 / 28 | 6,740 | N/A | N/A | Site 4 | 1999 |
| Potassium | 28 / 28 | 3,850 | N/A | N/A | Site 4 | 1999 |
| Sodium | 28 / 28 | 12,000 | N/A | N/A | Blows Creek | 1999 |
Sources: LANTDIV 1992b, 1995, 1996, 2003b, 2003f; EPA 1999b.
Note: The numbers of exceedences, detections, and samples, do not include data
from LANTDIV 2003f.
Key:
| * | results reported from diluted analysis |
| CREG | cancer risk evaluation guide (ATSDR) |
| CV | comparison value |
| EMEG-int-child | exposure media evaluation guide (ATSDR), child, intermediate exposure |
| J | analyte present, but value may not be accurate or precise |
| PCBs | polychlorinated biphenyls |
| ppm | parts per million |
| RBC-C | risk-based level (EPA), cancer |
| RMEG-child | reference media evaluation guide (ATSDR), child |
| SVOCs | semivolatile organic compounds |
Table 8. Contaminants Detected Above CVs
in Off-Site Surface Water at St. Juliens Creek Annex, Chesapeake, VA.
| Contaminant | Exceeds / Detects / Samples | Max (ppb) | CV (ppb) | CV Source | Max Location | Date |
| Inorganics | ||||||
| Calcium | 2 / 2 | 305,000 | Elizabeth River | 2002 | ||
| Magnesium | 2 / 2 | 870,000 | Elizabeth River | 2002 | ||
| Potassium | 2 / 2 | 245,000 | Elizabeth River | 2002 | ||
| Sodium | 2 / 2 / 2 | 6,700,000 | 20,000 | EPA Guideline | Elizabeth River | 2002 |
Sources: VDEQ 2003b.
Key:
| ppb | parts per billion |
Table 9. Contaminants Detected Above CVs
in Off-Site Sediment at St. Juliens Creek Annex, Chesapeake, VA.
| Contaminant | Exceeds / Detects / Samples | Max (ppm) | CV (ppm) | CV Source | Max Location | Date |
| Inorganics | ||||||
| Aluminum | 1 / 13 / 13 | 112,000 | 100,000 | EMEG-int-child | Elizabeth River | 1999 |
| Arsenic | 13 / 13 / 13 | 9.7 | 1 | CREG | St. Juliens Creek | 1999 |
| Calcium | 13 / 13 | 25,400 | St. Juliens Creek | 1999 | ||
| Magnesium | 13 / 13 | 6,000 | St. Juliens Creek | 1999 | ||
| Potassium | 13 / 13 | [1,360] | St. Juliens Creek | 1999 | ||
| Sodium | 13 / 13 | 7,270 | St. Juliens Creek | 1999 | ||
| Pesticides/PCBs | ||||||
| Dieldrin | 1 / 1 / 5 | 0.054 J | 0.040 | CREG | St. Juliens Creek | 1999 |
| Acenaphthylene | 5 / 12 | 0.6 | St. Juliens Creek | 1999 | ||
| Benzo(a)anthracene | 1 / 9 / 12 | 4.4 * | 3.9 | RBC-C | St. Juliens Creek | 1999 |
| Benzo(a)pyrene | 9 / 9 / 12 | 2.7 | 0.1 | CREG | St. Juliens Creek | 1999 |
| Benzo(b)fluoranthene | 1 / 10 / 12 | 4.8 * | 3.9 | RBC-C | St. Juliens Creek | 1999 |
| Benzo(g,h,i)perylene | 9 / 12 | 0.78 | St. Juliens Creek | 1999 | ||
| Dibenz(a,h)anthracene | 1 / 8 / 12 | 0.67 | 0.39 | RBC-C | St. Juliens Creek | 1999 |
| Phenanthrene | 6 / 12 | 1.8 | St. Juliens Creek | 1999 | ||
Sources: LANTDIV 1995, 1996, 2003b; EPA 1999b.
Key:
| * | results reported from diluted analysis |
| […] | analyte present, but as values approach the IDL the quantitation limit may not be accurate |
| CREG | cancer risk evaluation guide (ATSDR) |
| CV | comparison value |
| EMEG-int-child | exposure media evaluation guide (ATSDR), child, intermediate exposure |
| J | estimated value |
| PCBs | polychlorinated biphenyls |
| ppm | parts per million |
| RBC-C | risk-based level (EPA), cancer |
| SVOCs | semivolatile organic compounds |
Table 10. Lead in Soil at Housing Areas,
St. Juliens Creek Annex, Chesapeake, VA.
| Housing Area | Exceedences | Detections | Samples | Max, Foundation (ppm) | Max, Walkway (ppm) |
| Quarters 50 | 0 | 0 | 3 | 0 | 0 |
| Quarters J | 1 | 3 | 3 | 935 | 240 |
| Quarters K | 0 | 0 | 0 | 0 | 0 |
| Quarters F | 3 | 3 | 3 | 1,522 | 1,706 |
| Quarters G | 2 | 2 | 2 | 537 | 0 |
| Quarters A | 3 | 3 | 3 | 8,234 | 1,776 |
| Quarters B | 3 | 3 | 3 | 46,300 | 2,845 |
| Quarters I | 2 | 2 | 2 | 2,112 | 0 |
Source: NAVFAC 1996.
Note: The comparison value for lead in soil is 400 ppm (EPA action level)
Key: ppm parts per million
Table 11. Lead in Dust at Housing Areas,
St. Juliens Creek Annex, Chesapeake, VA.
| Housing Area | Exceedences | Detections | Samples | Max, Window (µg/ft2) | Max, Floor (µg/ft2) |
| Quarters 50 | 0 | 0 | 8 | 0 | 0 |
| Quarters J | 0 | 0 | 8 | 0 | 0 |
| Quarters K | 1 | 8 | 8 | 189 | 103 |
| Quarters F | 1 | 8 | 8 | 538 | 92 |
| Quarters G | 2 | 8 | 8 | 913 | 165 |
| Quarters A | 2 | 8 | 8 | 1,988 | 14 |
| Quarters B | 1 | 8 | 8 | 237 | 400 |
| Quarters I | 0 | 0 | 8 | 0 | 0 |
Source: NAVFAC 1996.
Key: µg/ft2 micrograms per square foot
Note: Available screening values for lead in dust are 500 µg/ft2
(window sill), 800 µg/ft2 (window well), 100 µg/ft2 (floor)
(NAVFAC 1996); the HUD and TSCA Residential Lead Hazard Standard (TSCA Section
403) is 25 µg/ft2 for floors.
Table 12. Blood Lead Sampling, 1995-2000,
Naval Medical Center, Portsmouth, VA.
| Class | Residence | Total Samples | Number of Samples, by Blood Lead Level (µg/dL) | ||||
| < 10 | 10 - 19 | 20 - 44 | 45 - 69 | > 70 | |||
| High-Risk | On-Base | 114 | 101 | 11 | 2 | 0 | 0 |
| Off-Base | 1074 | 1055 | 16 | 3 | 0 | 0 | |
| Low-Risk | On-Base | 29 | 29 | 0 | 0 | 0 | 0 |
| Off-Base | 327 | 327 | 0 | 0 | 0 | 0 | |
Source: NEHC 2003a.
Key: µg/dL micrograms per deciliter
Figure 1. Overview Map, St. Juliens Creek Annex, Chesapeake, Virginia.
Figure 2. Vicinity Map, St. Juliens Creek Annex, Chesapeake, Virginia.
Figure 3. IRP Sites and EPIC AOCs, St. Juliens Creek Annex, Chesapeake, Virginia.
Figure 4. Demographic Data, St. Juliens Creek Annex, Chesapeake, Virginia.
Figure 5. Aerial View, St. Juliens Creek Annex, Chesapeake, Virginia.
Figure 6. ATSDR's Exposure Evaluation Process.
Figure 7. Topographic Map, St. Juliens Creek Annex, Chesapeake, Virginia.
