PUBLIC HEALTH ASSESSMENT
ANDREWS AIR FORCE BASE
CAMP SPRINGS, PRINCE GEORGE'S COUNTY, MARYLAND
Table 9. Chemicals Detected in Surface Water, Sediment, Fish, and Strawberries in Piscataway Creek
| Chemical | Range (ppb) |
Frequency of Detections* | Frequency above Standards | Comparison Values (ppb) |
Type |
|
SURFACE WATER |
|||||
| Volatile Organic Compounds | |||||
| Carbon dioxide | 9-35 BJ | 20/20 | NA | NA | NA |
| Styrene | 1 J | 1/18 | 0 | 100 | LTHA |
| Semi-volatile Organic Compounds | |||||
| Pyrene | 1 J | 1/18 | 0 | 300 | child RMEG |
| Bis(2-ethylhexyl)phthalate | 0.6 J-230 B | 24/28 | 10 2 |
3 200 |
CREG child RMEG |
| Butyl benzyl phthalate | 1 J-22 | 4/18 | 0 | 2,000 | child RMEG |
| Di-n-butyl phthalate | 0.5 J-0.6 J | 3/8 | 0 | 1,000 | child RMEG |
| Diethylphthalate | 0.6 BJ-0.7 BJ | 2/8 | 0 | 8,000 | child RMEG |
| Pesticides | |||||
| Dieldrin | 0.0023-0.0089 | 8/28 | 8 0 |
0.002 0.5 |
CREG child C-EMEG |
| Heptachlor epoxide | 0.006 P | 1/18 | 1 0 |
0.004 0.1 |
CREG child RMEG |
| Metals | |||||
| Aluminum | 51 B-127,000 E | 28/28 | 1 | 20,000 | child I-EMEG |
| Antimony | 1.1-9.6 | 12/18 | 8 | 3 | LTHA |
| Arsenic | 3 B-34 S | 2/18 | 2 1 |
0.02 3 |
CREG child C-EMEG |
| Barium | 34 B-1,570 | 20/20 | 1 | 700 | child RMEG |
| Beryllium | 5 | 1/18 | 0 | 20 | child RMEG |
| Cadmium | 1 B-66 | 5/18 | 3 | 2 | child C-EMEG |
| Calcium | 7,960-93,100 | 20/20 | NA | NA | NA |
| Chromium | 5 B-275 | 5/18 | 1 | 30 | child RMEG (chromium VI) |
| Cobalt | 10 B-112 | 5/18 | 0 | 2,200 | RBC |
| Copper | 1.9-315 | 19/28 | 0 | 1,300 | MCLG |
| Iron | 320-854,000 | 28/28 | 3 | 11,000 | RBC |
| Lead | 1 B-479 | 25/28 | 3 | 15 | MCL |
| Magnesium | 1,850 B-31,100 | 20/20 | NA | NA | NA |
| Manganese | 40-24,400 | 20/20 | 3 | 500 | child RMEG |
| Mercury | 0.8-0.22 N | 2/28 | 0 | 2 | LTHA |
| Nickel | 14.9 B-310 | 8/28 | 1 | 100 | LTHA |
| Potassium | 1,160 B-9,780 | 20/20 | NA | NA | NA |
| Selenium | 1 B | 1/10 | 0 | 50 | child C-EMEG |
| Sodium | 2,330 B-23,600 | 20/20 | NA | NA | NA |
| Tin | 15.9-19.4 | 2/8 | 0 | 22,000 | RBC |
| Vanadium | 3 B-331 | 3/20 | 1 | 30 | child I-EMEG |
| Zinc | 10 B-2,600 | 23/28 | 0 | 3,000 | child C-EMEG |
|
SEDIMENT |
|||||
| Volatile Organic Compounds | |||||
| Acetone | 17-120 | 6/22 | 0 | 5,000,000 | child RMEG |
| Carbon dioxide | 24 BJ-250 BJ | 10/10 | NA | NA | NA |
| Methylene chloride | 3 BJ-22 B | 7/22 | 0 | 90,000 | CREG |
| Tetrachloroethylene | 4 J-8 J | 2/22 | 0 | 500,000 | chid RMEG |
| Semi-volatile Organic Compounds | |||||
| 2-Methylnaphthalene | 23 J-41 J | 3/12 | 0 | 1,600,000 | RBC |
| Acenaphthene | 150-590 | 5/22 | 0 | 3,000,000 | child RMEG |
| Acenaphthylene | 51-220 | 4/12 | NA | NA | NA |
| Anthracene | 81 J-700 | 7/22 | 0 | 20,000,000 | child RMEG |
| Benz(a)anthracene | 42-14,000 | 7/22 | 2 | 870 | RBC |
| Benzo(a)pyrene | 56-14,000 D | 12/22 | 8 | 100 | CREG |
| Benzo(b)fluoranthene | 35 J-13,000 D | 13/22 | 3 | 870 | RBC |
| Benzo(b+k)fluoranthene | 45-320 | 10/12 | 0 | 870 | RBC [benzo(b)fluoranthene] |
| Benzo(g,h,i)perylene | 270 J-14,000 D | 9/22 | NA | NA | NA |
| Benzo(k)fluoranthene | 44-1,100 | 6/22 | 0 | 8,700 | RBC |
| Benzyl butyl phthalate | 48-2,200 | 522 | 0 | 10,000,000 | child RMEG |
| Bis(2-ethylhexyl)phthalate | 52 BJ-3,800 B | 21/22 | 0 | 50,000 | CREG |
| Carbazole | 170 J-290 J | 2/12 | 0 | 32,000 | RBC (carbazole) |
| Chrysene | 42-12,000 D | 12/22 | 0 | 87,000 | RBC |
| Di-n-butyl phthalate | 82 J-1,300 B | 14/22 | 0 | 5,000,000 | child RMEG |
| Di-n-octyl phthalate | 24 J | 1/12 | 0 | 20,000,000 | child I-EMEG |
| Dibenzofuran | 130 J-290 J | 4/22 | 0 | 310,000 | RBC |
| Dibenz(a,h)anthracene | 42-4,400 D | 5/22 | 4 | 87 | RBC |
| Diethylphthalate | 64 BJ-92 BJ | 2/12 | 0 | 40,000,000 | child RMEG |
| Fluoranthene | 48-16,000 D | 17/22 | 0 | 2,000,000 | child RMEG |
| Fluorene | 190-530 | 5/22 | 0 | 2,000,000 | child RMEG |
| Indeno(1,2,3-cd)pyrene | 300 J-17,000 D | 9/22 | 3 | 870 | RBC |
| Naphthalene | 58-62 | 2/12 | 0 | 1,000,000 | child I-EMEG |
| Phenanthrene | 62 J-3,100 | 15/22 | NA | NA | NA |
| Pyrene | 53-15,000 D | 17/22 | 0 | 2,000,000 | child RMEG |
| Pesticides | |||||
| Endrin ketone | 11 P | 1/10 | NA | NA | NA |
| Metals | |||||
| Aluminum | 189,000-4,130,000 | 12/22 | 0 | 100,000,000 | child I-EMEG |
| Antimony | 7,200 | 1/22 | 0 | 20,000 | child RMEG |
| Arsenic | 220-6,000 NS | 17/22 | 13 0 |
500 20,000 |
CREG child C-EMEG |
| Barium | 2,000 B-79,000 | 10/10 | 0 | 4,000,000 | child RMEG |
| Beryllium | 90-500 B | 12/21 | 0 | 100,000 | child RMEG |
| Cadmium | 160-5,000 | 13/22 | 0 | 10,000 | child C-EMEG |
| Calcium | 41,000 B-3,420,000 | 10/10 | NA | NA | NA |
| Chromium | 900 B-29,100 | 22/22 | 0 | 230,000 | RBC (chromium VI) |
| Cobalt | 700 B-9,000 B | 9/22 | 0 | 4,700,000 | RBC |
| Copper | 400 B-15,000 | 22/22 | 0 | 3,100,000 | RBC |
| Iron | 367,000-68,900,000 | 22/22 | 2 | 23,000,000 | RBC |
| Lead | 1,300-134,000 | 22/22 | 0 | 400,000 | SSL |
| Magnesium | 57,000 B-2,260,000 | 10/10 | NA | NA | NA |
| Manganese | 6,000-575,000 | 10/10 | 0 | 3,000,000 | child RMEG |
| Mercury | 200-300 | 3/22 | NA | NA | NA |
| Nickel | 2,000 B-38,000 | 15/22 | 0 | 1,000,000 | child RMEG |
| Potassium | 68,000 B-233,000 B | 6/10 | NA | NA | NA |
| Selenium | 100 BNW-600 BNW | 5/10 | 0 | 300,000 | child C-EMEG |
| Silver | 110-1,100 | 4/12 | 0 | 300,000 | child RMEG |
| Sodium | 50,000 B-2,130,000 | 7/10 | NA | NA | NA |
| Vanadium | 900 B-14,000 | 10/10 | 0 | 200,000 | child I-EMEG |
| Tin | 4,000-9,300 | 12/12 | 0 | 47,000,000 | RBC |
| Zinc | 4,200-93,000 N | 22/22 | 0 | 20,000,000 | child C-EMEG |
|
FISH |
|||||
| Volatile Organic Compounds | |||||
| Acetone | 59-1,900 | 7/7 | NA | NA | NA |
| 2-Butanone | 10- >4,200 | 3/7 | NA | NA | NA |
| Toluene | 12 J | 1/7 | NA | NA | NA |
| Semi-volatile Organic Compounds | |||||
| Acenaphthene | 37-1,700 | 7/7 | NA | NA | NA |
| Acenaphthylene | 600 | 1/7 | NA | NA | NA |
| Anthracene | 140-808 | 2/7 | NA | NA | NA |
| Benz(a)anthracene | 360 | 1/7 | NA | NA | NA |
| Bis(2-ethylhexyl)phthalate | 46 BJ-140 BJ | 6/7 | NA | NA | NA |
| Chrysene | 340 | 1/7 | NA | NA | NA |
| Di-n-butyl phthalate | 44 BJ-400 B | 6/7 | NA | NA | NA |
| Fluoranthene | 7,600 | 1/7 | NA | NA | NA |
| Fluorene | 42-630 | 2/7 | NA | NA | NA |
| Naphthalene | 65-640 | 2/7 | NA | NA | NA |
| Phenanthrene | 661 | 1/7 | NA | NA | NA |
| Pyrene | 56-2,400 | 2/7 | NA | NA | NA |
| Pesticides/Polychlorinated Biphenyls | |||||
| 4,4'-DDD | 2.1 J | 1/7 | NA | NA | NA |
| 4,4'-DDE | 1.3 J-13 | 7/7 | NA | NA | NA |
| Dieldrin | 1.6 J-30 J | 7/7 | NA | NA | NA |
| Heptachlor epoxide | 1.4 J | 1/7 | NA | NA | NA |
| Aroclor-1254 | 23 J-100 | 7/7 | NA | NA | NA |
| Aroclor-1260 | 9.0 J-81 | 7/7 | NA | NA | NA |
| Metals | |||||
| Aluminum | 1,100-8,600 | 6/7 | NA | NA | NA |
| Antimony | 130-360 | 3/7 | NA | NA | NA |
| Arsenic | 60-100 | 2/7 | NA | NA | NA |
| Cadmium | 90-140 | 4/7 | NA | NA | NA |
| Chromium | 370-990 | 7/7 | NA | NA | NA |
| Cobalt | 150-370 | 2/7 | NA | NA | NA |
| Copper | 800-2,000 | 7/7 | NA | NA | NA |
| Lead | 110-1,000 | 4/7 | NA | NA | NA |
| Mercury | 100-210 | 5/7 | NA | NA | NA |
| Nickel | 220-720 | 3/7 | NA | NA | NA |
| Tin | 860-2,300 | 7/7 | NA | NA | NA |
| Zinc | 14,100-62,600 | 7/7 | NA | NA | NA |
|
STRAWBERRIES |
|||||
| Semi-volatile Organic Compounds | |||||
| Bis(2-ethylhexyl)phthalate | 5,100 | 1/2 | NA | NA | NA |
| Chrysene | 89 | 1/2 | NA | NA | NA |
| Di-n-butyl phthalate | 170 BJ-220 BJ | 2/2 | NA | NA | NA |
| Dibenz(a,h)anthracene | 60 | 1/2 | NA | NA | NA |
| Pesticides/Polychlorinated Biphenyls | |||||
| Captan | 54 | 1/4 | NA | NA | NA |
| Iprodione | 190-2,100 | 2/4 | NA | NA | NA |
| Metals | |||||
| Aluminum | 13,000-14,200 | 2/2 | NA | NA | NA |
| Copper | 800-2,000 | 6/6 | NA | NA | NA |
| Iron | 5,000-11,000 | 6/6 | NA | NA | NA |
| Lead | 100 | 1/2 | NA | NA | NA |
| Tin | 910-33,000 | 6/6 | NA | NA | NA |
| Zinc | 2,000-2,800 | 2/2 | NA | NA | NA |
*Based on tables that only reported detected analytes, therefore, the denominator may actually be a larger number than reported in this table.
References: Andrews AFB 1993, EA Engineering 1995a
Abbreviations:
CREG - Cancer Risk Evaluation Guide
C-EMEG - chronic Environmental Media Evaluation Guide
I-EMEG - intermediate Environmental Media Evaluation
Guide
LTHA - Lifetime Health Advisory for drinking water
MCLG - Maximum Contaminant Level Goal
NA - not available
ppb - parts per billion
RBC - Risk-based Concentration
RMEG - Reference Dose Media Evaluation Guide
SSL - Soil Screening Level
Qualifiers:
B - found in blank (organics) or value between IDL and
CRQL (inorganics)
D - diluted
E - out of calibration range
J - estimated
N - spiked sample not within control limits
P - greater than 25% difference in two columns
W - post-digestion spike is out of control limits
Table 10. Chemicals Detected in Surface Water and Sediment
in Charles Branch
| Chemical | Range (ppb) |
Frequency of Detections | Frequency above Standards | Comparison Values (ppb) |
Type |
|
SURFACE WATER | |||||
| Volatile Organic Compounds | |||||
| Chloroform | 5 JB-7 JB | 2/2 | 1 0 |
6 100 |
CREG child C-EMEG |
| Toluene | 3 JB-4 JB | 2/2 | 0 | 200 | child I-EMEG |
| Metals | |||||
| Aluminum | 133-220 | 2/2 | 0 | 20,000 | child I-EMEG |
| Arsenic | 1.2-1.3 | 2/2 | 2 0 |
0.02 3 |
CREG child C-EMEG |
| Barium | 38.9-41.3 | 2/2 | 0 | 700 | child RMEG |
| Cadmium | 1.3 | 1/2 | 0 | 2 | child C-EMEG |
| Calcium | 38,100-38,400 | 2/2 | NA | NA | NA |
| Copper | 10.4-12.9 | 2/2 | 0 | 1,300 | MCLG |
| Iron | 494-1,020 | 2/2 | 0 | 11,000 | RBC |
| Magnesium | 6,880-6,930 | 2/2 | NA | NA | NA |
| Manganese | 41.8-52.3 | 2/2 | 0 | 500 | child RMEG |
| Potassium | 2,300-2.350 | 2/2 | NA | NA | NA |
| Sodium | 9,420-9,570 | 2/2 | NA | NA | NA |
| Vanadium | 2.2-2.5 | 2/2 | 0 | 30 | child I-EMEG |
| Zinc | 34.3-61.0 | 2/2 | 0 | 3,000 | child C-EMEG |
|
SEDIMENT | |||||
| Volatile Organic Compounds | |||||
| Acetone | 18-25 B | 2/2 | 0 | 5,000,000 | child RMEG |
| Chloromethane | 12 J | 1/2 | 0 | 49,000 | RBC |
| Methylene chloride | 3 J | 1/2 | 0 | 90,000 | CREG |
| Semi-volatile Organic Compounds | |||||
| Acenaphthene | 26 | 1/2 | 0 | 3,000,000 | child RMEG |
| Acenaphthylene | 37 | 1/2 | NA | NA | NA |
| Anthracene | 350 | 1/2 | 0 | 20,000,000 | child RMEG |
| Benz(a)anthracene | 88-1,700 | 2/2 | 1 | 870 | RBC |
| Benzo(a)pyrene | 120-1,500 | 2/2 | 2 | 100 | CREG |
| Benzo(b)fluoranthene | 210 | 1/2 | 0 | 870 | RBC |
| Benzo(g,h,i)perylene | 80-550 | 2/2 | NA | NA | NA |
| Benzo(k)fluoranthene | 2,600 | 1/2 | 0 | 8,700 | RBC |
| Bis(2-ethylhexyl)phthalate | 100-410 | 2/2 | 0 | 50,000 | CREG |
| Chrysene | 140-1,600 | 2/2 | 0 | 87,000 | RBC |
| Di-n-butyl phthalate | 57 | 1/2 | 0 | 5,000,000 | child RMEG |
| Dibenz(a,h)anthracene | 300 | 1/2 | 1 | 87 | RBC |
| Fluoranthene | 210-4,200 | 2/2 | 0 | 2,000,000 | child RMEG |
| Fluorene | 64 | 1/2 | 0 | 2,000,000 | child RMEG |
| Indeno(1,2,3-cd)pyrene | 110-980 | 2/2 | 1 | 870 | RBC |
| Phenanthrene | 76-940 | 2/2 | NA | NA | NA |
| Pyrene | 160-1,900 | 2/2 | 0 | 2,000,000 | child RMEG |
| Metals | |||||
| Aluminum | 5,840,000-8,850,000 | 2/2 | 0 | 100,000,000 | child I-EMEG |
| Arsenic | 1,400-2,100 | 2/2 | 2 0 |
500 20,000 |
CREG child C-EMEG |
| Barium | 30,200-35,500 | 2/2 | 0 | 4,000,000 | child RMEG |
| Beryllium | 380-430 | 2/2 | 0 | 100,000 | child RMEG |
| Cadmium | 850 | 1/2 | 0 | 10,000 | child C-EMEG |
| Calcium | 1,470,000-1,680,000 | 2/2 | NA | NA | NA |
| Chromium | 15,100-22,600 | 2/2 | 0 | 230,000 | RBC (chromium VI) |
| Cobalt | 2,800-9,300 | 2/2 | 0 | 4,700,000 | RBC |
| Copper | 13,200-48,000 | 2/2 | 0 | 3,100,000 | RBC |
| Iron | 10,400,000- 13,000,000 |
2/2 | 0 | 23,000,000 | RBC |
| Lead | 26,700-45,100 | 2/2 | 0 | 400,000 | SSL |
| Magnesium | 859,000-1,080,000 | 2/2 | NA | NA | NA |
| Manganese | 21,400-106,000 | 2/2 | 0 | 3,000,000 | child RMEG |
| Nickel | 10,800-20,300 | 2/2 | 0 | 1,000,000 | child RMEG |
| Potassium | 384,000-687,000 | 2/2 | NA | NA | NA |
| Silver | 1,100-2,300 | 2/2 | 0 | 300,000 | child RMEG |
| Sodium | 48,000-62,500 | 2/2 | NA | NA | NA |
| Vanadium | 44,400-51,400 | 2/2 | 0 | 200,000 | child I-EMEG |
| Zinc | 33,900-92,000 | 2/2 | 0 | 20,000,000 | child C-EMEG |
| Total Petroleum Hydrocarbons | |||||
| Gasoline Range Organics | 6,800 | 1/4 | NA | NA | NA |
| Diesel Range Organics | 68,000-5,300,000 | 4/4 | NA | NA | NA |
References: Dames & Moore 1994, IT Corporation 1997
Abbreviations:
C-EMEG - chronic Environmental Media Evaluation Guide
CREG - Cancer Risk Evaluation Guide
I-EMEG - intermediate Environmental Media Evaluation
Guide
MCLG - Maximum Contaminant Level Goal
NA - not available
ppb - parts per billion
RBC - Risk-based Concentration
RMEG - Reference Dose Media Evaluation Guide
Qualifiers:
B - found in blank
J - estimated
Table 11. Chemicals Detected in Groundwater at LF-05
| Chemical | Range (ppb) |
Frequency of Detections* | Frequency above Standards | Comparison Values (ppb) |
Type |
| Volatile Organic Compounds | |||||
| 1,1-Dichloroethane | 0.7 J-1 | 2/14 | 0 | 800 | RBC |
| 1,2-Dichloroethane | 1.0 J | 1/10 | 1 0 |
0.4 700 |
CREG CLHA |
| 1,2-Dichloroethene, total | 0.2-1.0 J | 2/24 | 0 | 70 | LTHA (cis) |
| 2-Butanone | 740 D | 1/14 | 0 | 6,000 | child RMEG |
| 4-Methyl-2-pentanone | 63 E | 1/14 | 0 | 140 | RBC |
| Acetone | 1 J-55 E | 3/28 | 0 | 1,000 | child RMEG |
| Benzene | 1 J-15 | 18/38 | 18 2 |
0.6 5 |
CREG MCL |
| Carbon disulfide | 2.0 J-18.0 | 6/10 | 0 | 1,000 | child RMEG |
| Chlorobenzene | 8-610 | 18/38 | 2 | 100 | LTHA |
| Chloroethane | 0.6 J | 1/14 | 0 | 3.6 | RBC |
| Chloroform | 0.4 J | 1/14 | 0 | 6 | CREG |
| Ethylbenzene | 0.1 J-14 | 2/28 | 0 | 700 | LTHA |
| Methylene chloride | 2- 54 B | 11/24 | 4 0 |
5 600 |
CREG child RMEG |
| Toluene | 0.2 J-1 J | 5/28 | 0 | 200 | child I-EMEG |
| Xylenes, total | 0.2 J-9 | 8/38 | 0 | 2,000 | child I-EMEG |
| Semi-volatile Organic Compounds | |||||
| 1,2-benzenedicarboxylic acid | 2.0 BJ-3.0 BJ | 2/13 | NA | NA | NA |
| 1,3-Dichlorobenzene | 5J-12 | 2/27 | 0 | 600 | LTHA |
| 1,4-Dichlorobenzene | 3 J-67 | 14/41 | 0 | 75 | LTHA |
| 2,4-Dimethylphenol | 15-1,000 | 2/28 | 1 | 200 | child RMEG |
| 2-Chorophenol | 3.0 J-5 J | 2/27 | 0 | 40 | LTHA |
| 2-Methylnaphthalene | 4 J | 1/14 | 0 | 120 | RBC |
| 4-Chloro-3-methylphenol | 33 J | 1/14 | NA | NA | NA |
| Acenaphthene | 2 J | 2/27 | 0 | 600 | child RMEG |
| Bis(2-ethylhexyl)phthalate | 2.0 J-6.0 J | 5/13 | 1 0 |
3 200 |
CREG child RMEG |
| Diethylphthalate | 2 J-18 J | 9/28 | 0 | 8,000 | child RMEG |
| Fluorene | 3 J | 2/27 | 0 | 400 | child RMEG |
| Naphthalene | 2 J-16 | 5/41 | 0 | 20 | LTHA |
| Pesticides/Polychlorinated Biphenyls | |||||
| Heptachlor epoxide | 0.053 P | 1/14 | 1 0 |
0.004 0.1 |
CREG child RMEG |
| Metals | |||||
| Aluminum | 54.3 B-10,900 | 35/38 | 0 | 20,000 | child I-EMEG |
| Antimony | 1.1 B-2.6 B | 11/14 | 0 | 3 | LTHA |
| Arsenic | 2.7 B-33.6 | 19/28 | 19 16 |
0.02 3 |
CREG child C-EMEG |
| Barium | 7.9 J-1,280 | 37/38 | 2 | 700 | child RMEG |
| Beryllium | 0.44 J-3.8 B | 4/38 | 0 | 20 | child RMEG |
| Cadmium | 0.89 J-4.6 B | 10/28 | 5 | 2 | child C-EMEG |
| Calcium | 806 J-232,000 | 38/38 | NA | NA | NA |
| Chromium | 4.6 J-28.7 | 6/28 | 0 | 30 | child RMEG (chromium VI) |
| Cobalt | 5.3-66.7 | 10/38 | 0 | 2,200 | RBC |
| Copper | 2.0 J-7.0 B | 4/38 | 0 | 1,300 | MCLG |
| Iron | 42.0 B-108,000 | 34/38 | 6 | 11,000 | RBC |
| Lead | 1.0 B-19.4 | 10/38 | 1 | 15 | MCL |
| Magnesium | 139 J-76,600 | 38/38 | NA | NA | NA |
| Manganese | 3.4 B-3,640 | 35/38 | 15 | 500 | child RMEG |
| Mercury | 0.11 B-0.35 N | 8/24 | 0 | 2 | LTHA |
| Nickel | 6.0 J-58.0 | 22/38 | 0 | 100 | LTHA |
| Potassium | 632 B-64,000 | 35/38 | NA | NA | NA |
| Selenium | 2.1 B-30.9 | 6/28 | 0 | 50 | child C-EMEG |
| Silver | 2.1 J | 1/28 | 0 | 50 | child RMEG |
| Sodium | 3,230-680,000 | 37/38 | NA | NA | NA |
| Thallium | 2.1 BN | 1/14 | 1 | 0.5 | LTHA |
| Vanadium | 3.5 J-3.8 J | 3/28 | 0 | 30 | child I-EMEG |
| Zinc | 6.5 B-503 | 24/38 | 0 | 3,000 | child C-EMEG |
*Based on tables that only reported detected analytes, therefore, the denominator may actually be a larger number than reported in this table.
References: Dames & Moore 1992, EA Engineering 1996, EA Engineering 1999
Abbreviations:
C-EMEG - chronic Environmental Media Evaluation Guide
CLHA - Child Longer Term Health Advisory
CREG - Cancer Risk Evaluation Guide
I-EMEG - intermediate Environmental Media Evaluation
Guide
LTHA - Lifetime Health Advisory
MCLG - Maximum Contaminant Level Goal
NA - not available
ppb - parts per billion
RBC - Risk-based Concentration
RMEG - Reference Dose Media Evaluation Guide
Qualifiers:
B - found in blank (organics) or value between IDL and
CRQL (inorganics)
D - diluted
E - out of calibration range
J - estimated
N - spiked sample not within control limits
P - greater than 25% difference in two columns
Table 12. Chemicals Detected in an Off-Site Groundwater
Well Near LF-05
(Well at Hexagon Developers)
| Chemical | Concentration Range (ppb) |
Frequency above Standards | Comparison Values (ppb) |
Type |
| Volatile Organic Compounds | ||||
| Methylene chloride | 7.2 B | 1 0 |
5 600 |
CREG child RMEG |
| Metals | ||||
| Aluminum | 13.8 B | 0 | 20,000 | child I-EMEG |
| Barium | 200-230 | 0 | 700 | child RMEG |
| Beryllium | 0.69 B | 0 | 20 | child RMEG |
| Boron | 47.1 B | 0 | 100 | child I-EMEG |
| Calcium | 43,300-47,300 | NA | NA | NA |
| Chromium | 0.37 B | 0 | 30 | child RMEG (chromium VI) |
| Cobalt | 0.54 B | 0 | 2,200 | RBC |
| Iron | 456-1,460 | 0 | 11,000 | RBC |
| Lithium | 50.2 | 0 | 730 | RBC |
| Magnesium | 6,580-28,000 | NA | NA | NA |
| Manganese | 13 | 0 | 500 | child RMEG |
| Mercury | 0.04 B | 0 | 2 | LTHA |
| Nickel | 0.76 B | 0 | 100 | LTHA |
| Potassium | 3,370-4,070 | NA | NA | NA |
| Silicon | 7,940 | NA | NA | NA |
| Sodium | 3,330-4,110 | NA | NA | NA |
| Thallium | 5.4 B | 1 | 0.5 | LTHA |
| Zinc | 115-340 | 0 | 3,000 | child C-EMEG |
Reference: PGCHD 1992a, IT Corporation 1998, State of Maryland 2000
Abbreviations:
C-EMEG - chronic Environmental Media Evaluation Guide
CREG - Cancer Risk Evaluation Guide
I-EMEG - intermediate Environmental Media Evaluation
Guide
LTHA - Lifetime Health Advisory
NA - not available
ppb - parts per billion
RBC - Risk-based Concentration
RMEG - Reference Dose Media Evaluation Guide
Qualifiers:
B - found in blank (organics) or value between IDL and
CRQL (inorganics)
Table 13. Chemicals Detected in Off-Site Monitoring Wells
at LF-05
| Chemical | Range (ppb) |
Frequency of Detections | Frequency above Standards | Comparison Values (ppb) |
Type |
| Volatile Organic Compounds | |||||
| 1,1-Dichloroethane | 1 | 1/6 | 0 | 800 | RBC |
| Acetone | 5 J | 1/6 | 0 | 1,000 | child RMEG |
| Benzene | 2-5 | 5/6 | 5 1 |
0.6 5 |
CREG MCL |
| Chlorobenzene | 8-36 | 6/6 | 0 | 100 | LTHA |
| Methylene chloride | 2 | 1/6 | 0 | 5 | CREG |
| Toluene | 0.4 J | 1/6 | 0 | 200 | child I-EMEG |
| Semi-volatile Organic Compounds | |||||
| 1,4-Dichlorobenzene | 3 J-8 J | 5/6 | 0 | 75 | LTHA |
| Diethylphthalate | 2 J-6 J | 3/6 | 0 | 8,000 | child RMEG |
| Metals | |||||
| Aluminum | 92.9 J-724 | 5/6 | 0 | 20,000 | child I-EMEG |
| Antimony | 1.1 B-1.3 B | 3/3 | 0 | 3 | LTHA |
| Arsenic | 2.7 B-4.6 | 3/6 | 3 1 |
0.02 3 |
CREG child C-EMEG |
| Barium | 133 B-205 | 6/6 | 0 | 700 | child RMEG |
| Cadmium | 1.5 B-3.2 B | 3/6 | 2 | 2 | child C-EMEG |
| Calcium | 34,500-84,400 | 6/6 | NA | NA | NA |
| Iron | 3,890 J-90,500 | 6/6 | 5 | 11,000 | RBC |
| Lead | 1.1 J-2.2 J | 2/6 | 0 | 15 | MCL |
| Magnesium | 20,600-39,800 | 6/6 | NA | NA | NA |
| Manganese | 448-2,190 | 6/6 | 5 | 500 | child RMEG |
| Mercury | 0.15 | 1/3 | 0 | 2 | LTHA |
| Nickel | 6.8 J-15.1 B | 4/6 | 0 | 100 | LTHA |
| Potassium | 3,310-16,100 | 6/6 | NA | NA | NA |
| Selenium | 3.2 B-6.5 B | 2/6 | 0 | 50 | child C-EMEG |
| Sodium | 110,000-190,000 | 6/6 | NA | NA | NA |
| Zinc | 15.8 B-26.2 | 3/6 | 0 | 3,000 | child C-EMEG |
References: EA Engineering 1996, EA Engineering 1999
Abbreviations:
C-EMEG - chronic Environmental Media Evaluation Guide
CREG - Cancer Risk Evaluation Guide
I-EMEG - intermediate Environmental Media Evaluation
Guide
LTHA - Lifetime Health Advisory
NA - not available
ppb - parts per billion
RBC - Risk-based Concentration
RMEG - Reference Dose Media Evaluation Guide
Qualifiers:
B - value between IDL and CRQL
J - estimated
Figure 1. Location of Andrews Air Force Base
Figure 2. ATSDR's Exposure Evaluation Process
Figure 3. Locations of IRP Sites at Andrews Air Force Base
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