CABOT-WROUGHT PRODUCTS - DIVISION OF CABOT CORPORATION
(a/k/a NGK METALS/CABOT BERYLCO, INCORPORATED)
MUHLENBERG, BERKS COUNTY, PENNSYLVANIA
APPENDIX B
| Table 1. Summary Demographic Information for Selected Areas Near the NGK Metals Facility Site, Berks County, PA | |||
| Within 1-mile of the facility | Within 2-miles of the facility | Berks County | |
| Persons | 4,927 | 14,686 | 336,523 |
| Race | |||
| White | 4,849 (98%) | 14,441 (98%) | 314,561 (93%) |
| Other | 78 (2%) | 245 (2%) | 21,962 (7%) |
| Age | |||
| 1 to 6 years of age | 309 (6%) | 956 (7%) | 31,602 (9%) |
| 7 to 14 years of age | 366 (7%) | 1,170 (8%) | 34,312 (10%) |
| 15 to 44 years of age | 1,832 (37%) | 5,427 (37%) | 149,968 (45%) |
| 45 to 64 years of age | 1,269 (26%) | 3,931 (27%) | 68,115 (20%) |
| 65 years of age and older | 1,151 (23%) | 3,202 (22%) | 52,526 (16%) |
| Females 15 to 44 years of age | 910 (18%) | 2,693 (18%) | 75,136 (22%) |
| Total Housing Units | 2,174 | 6,090 | 134,482 |
| Occupied Housing Units | 2,126 (98%) | 5,968 (98%) | 127,649 (95%) |
| Owner Occupied | 1,719 (81%) | 5,097 (85%) | 94,336 (74%) |
| Renter Occupied | 407 (19%) | 871 (15%) | 33,313 (26%) |
| Median Housing Value | $72,488 | $79,565 | $81,800 |
| Square Mile Area | 3.13 | 12.50 | 859.22 |
| Population Density | 1,576/sq. mile | 1,175/sq. mile | 391.7/sq. mile |
Source: U.S. Bureau of the Census. 1991. Census of Population and Housing, 1990: Summary Tape File 1B (Pennsylvania) [machine-readable data files]/ prepared by the Bureau of the Census. Washington: The Bureau [producer and distributor].
| Contaminant | Maximum Concentration mg/kg |
Date | Comparison Value | |
| mg/kg | Source | |||
| Antimony | 36.9 | 1989 | 300 | RMEG |
| Arsenic | 179 | 1989 | 0.4 | CREG |
| Barium | 185 | 1989 | 50000 | RMEG |
| Beryllium | 10900 | 1989 | 0.2 | CREG |
| Cadmium | 639 | 1989 | 100 | EMEG |
| Chromium (total) | 14700* | 1989 | 4000 | RMEG |
| Chromium (VI) | NA | 4000 | RMEG | |
| Copper | 191000E* | 1989 | 38000 | EPAIII |
| Lead | 932N | 1989 | NONE | |
| Manganese | 1220 | 1989 | 4000 | RMEG |
| Nickel | 290 | 1989 | 20000 | EPAIII |
| Selenium | 47.7N | 1989 | 2000 | EMEG |
| Thallium | 2B | 1989 | 60 | RMEG |
| Vanadium | 74.5 | 1989 | 7200 | EPAIII |
| Fluoride | 10700 | 1989 | 40000 | RMEG |
| Nitrate | 71.9 | 1989 | 1000000 | RMEG |
| 1,1-Dichloroethene | NA | 1 | CREG | |
| Tetrachloroethene | NA | 10 | CREG | |
| Trichloroethene | NA | 60 | CREG | |
| 1,1,1-Trichloroethane | NA | 92000 | EPAIII | |
| Vinyl chloride | NA | 10 | EMEG | |
Reference: 1
Note: bolding shows contaminants of concern for on-site subsurface soil
E reported value is estimated because of the presence of interference
N spiked sample recovery not within control limits
* duplicate analysis not within control limit
NA not analyzed
| Contaminant | Shallow Well µg/L |
Date | Deep Well µg/L |
Date | Comparison Value | |
| µg/L | Source | |||||
| Antimony | 36.8B | 12/89 | 23.5B | 12/89 | 3 | LTHA |
| Arsenic | 7.2B | 5/90 | 13 | 12/89 | 0.02 | CREG |
| Barium | 755 | 12/89 | 1010 | 12/89 | 700 | RMEG |
| Beryllium | 661 | 6/91 | 551 | 5/90 | 0.008 | CREG |
| Cadmium | 53.4 | 5/90 | ND | 5 | RMEG | |
| Chromium (total) | 2550 | 12/89 | 1420 | 12/89 | 50 | RMEG |
| Chromium (VI) | 630 | 12/89 | 1360 | 5/90 | 50 | RMEG |
| Copper | 891 | 5/90 | 194 | 12/89 | 1300 | MCL |
| Lead | 66.4 | 12/89 | 66.3 | 12/89 | 15 | MCLA |
| Manganese | 9270 | 12/89 | 12500 | 12/89 | 50 | RMEG |
| Nickel | 337 | 12/89 | 314 | 12/89 | 100 | LTHA |
| Selenium | 50.3 | 5/90 | 6.3BS | 12/89 | 20 | IEMEG |
| Thallium | ND | 2.8 | 12/89 | 0.4 | LTHA | |
| Vanadium | 149 | 12/89 | 241 | 12/89 | 20 | LTHA |
| Fluoride | 85000 | 12/89 | 160000 | 5/90 | 600 | RMEG |
| Nitrate | 524000 | 5/90 | 37000 | 12/89 | 10000 | MCL |
| 1,1-Dichloroethene | 33 | 5/90 | 8 | 12/89 | 0.06 | CREG |
| Tetrachloroethene | 5 | 5/90 | 4J | 5/90 | 0.7 | CREG |
| Trichloroethene | 13 | 12/89 | 5 | 5/90 | 3 | CREG |
| 1,1,1-Trichloroethane | 410 | 6/91 | 33 | 6/91 | 200 | LTHA |
| Vinyl chloride | 46 | 5/90 | 31 | 5/90 | 0.2 | EMEG |
References: 1 (for samples dated 12/89 & 5/90), 7 (for samples dated 6/91)
Note: bolding shows contaminants of concern for on-site groundwater
B indicates value below laboratory reporting limit but above instrument detection limit
J indicates estimated value below laboratory reporting limit but above instrument detection limit
S indicates value was determined by the method of standard additions
ND not detected
| Contaminant | Private Well 1 | Private Well 2 | Comparison Value | |||
| µg/L | Date | µg/L | Date | µg/L | Source | |
| Antimony | NA | NA | 3 | LTHA | ||
| Arsenic | NA | NA | 0.02 | CREG | ||
| Barium | NA | NA | 700 | RMEG | ||
| Beryllium | 5.3 | 6/91 | <2 | 7/94 | 0.008 | CREG |
| Cadmium | <5 | 12/90 | <5 | 5/91 | 5 | RMEG |
| Chromium (total) | 242 | 6/91 | 52.7 | 6/91 | 50 | RMEG |
| Chromium (VI) | 281J | 6/91 | 43.9 | 6/91 | 50 | RMEG |
| Copper | 8.6B | 6/91 | 35 | 7/94 | 1300 | MCL |
| Lead | <50 | 12/90 | <50 | 5/91 | 15 | MCLA |
| Manganese | NA | NA | 50 | RMEG | ||
| Nickel | <40 | 12/90 | <40 | 12/90 | 100 | LTHA |
| Selenium | NA | NA | 20 | IEMEG | ||
| Thallium | NA | NA | 0.4 | LTHA | ||
| Vanadium | NA | NA | 20 | LTHA | ||
| Fluoride | 1700 | 12/90 | 350 | 6/91 | 600 | RMEG |
| Nitrate | 8670 | 6/91 | 5720 | 6/91 | 10000 | MCL |
| 1,1-Dichloroethene | 2 | 12/90 | <1 | 7/94 | 0.06 | CREG |
| Tetrachloroethene | 10 | 6/91 | <1 | 7/94 | 0.7 | CREG |
| Trichloroethene | 4J | 6/91 | <1 | 7/94 | 3 | CREG |
| 1,1,1-Trichloroethane | 15 | 6/91 | 6 | 6/91 | 200 | LTHA |
| Vinyl chloride | <1 | 12/90 | <1 | 7/94 | 0.2 | EMEG |
References: 5 (for samples dated 5/91), 6 (for samples dated 6/91), 11 (for samples dated 7/94), and 15 (for samples
dated 12/90)
Note: bolding shows contaminant concentrations that exceed comparison values
B estimated concentration, detected below contract required limit but above instrument detection limit
J estimated value
< indicates that the contaminant was not detected at the reported value
NA not analyzed
| Contaminant | Private Well 3 | Reading Crest Well | Comparison Value | |||
| µg/L | Date | µg/L | Date | µg/L | Source | |
| Antimony | NA | <1 | 8/90 | 3 | LTHA | |
| Arsenic | NA | 1 | 8/90 | 0.02 | CREG | |
| Barium | NA | 47 | 8/90 | 700 | RMEG | |
| Beryllium | <5 | 12/90 | 11 | 8/90 | 0.008 | CREG |
| Cadmium | <5 | 12/90 | 6 | 8/90 | 5 | RMEG |
| Chromium (total) | <50 | 12/90 | 139 | 10/83 | 50 | RMEG |
| Chromium (VI) | <20 | 12/90 | 130 | 10/83 | 50 | RMEG |
| Copper | 40 | 12/90 | 72 | 8/90 | 1300 | MCL |
| Lead | <50 | 12/90 | <20 | 8/90 | 15 | MCLA |
| Manganese | NA | 29 | 8/90 | 50 | RMEG | |
| Nickel | <40 | 12/90 | 27 | 8/90 | 100 | LTHA |
| Selenium | NA | 463 | 8/90 | 20 | IEMEG | |
| Thallium | NA | <1 | 8/90 | 0.4 | LTHA | |
| Vanadium | NA | <1 | 8/90 | 20 | LTHA | |
| Fluoride | 300 | 12/90 | 1700 | 8/90 | 600 | RMEG |
| Nitrate | NA | 6050 | 8/90 | 10000 | MCL | |
| 1,1-Dichloroethene | <1 | 12/90 | 8.1 | 8/90 | 0.06 | CREG |
| Tetrachloroethene | <1 | 12/90 | 0.9 | 8/90 | 0.7 | CREG |
| Trichloroethene | <1 | 12/90 | 1.9 | 8/90 | 3 | CREG |
| 1,1,1-Trichloroethane | <1 | 12/90 | 25.7 | 8/90 | 200 | LTHA |
| Vinyl chloride | <1 | 12/90 | <0.5 | 8/90 | 0.2 | EMEG |
References: 1, and 16 (for samples dated 8/90), 11 (for samples dated 12/90), 13 (for samples dated 10/83)
Note: bolding shows contaminant concentrations that exceed comparison values
< indicates that the contaminant was not detected at the reported value
NA not analyzed
| Contaminant | P-1 µg/L |
BP-1 µg/L |
MW24 µg/L |
MW25 µg/L |
MW26 µg/L |
Comparison Value | |
| µg/L | Source | ||||||
| Antimony | NA | NA | NA | NA | NA | 3 | LTHA |
| Arsenic | NA | NA | NA | NA | NA | 0.02 | CREG |
| Barium | NA | NA | NA | NA | NA | 700 | RMEG |
| Beryllium | 63.3 | ND | 6.3 | 3.14B | 8.4 | 0.008 | CREG |
| Cadmium | 12.3 | ND | ND | ND | ND | 5 | RMEG |
| Chromium (total) | 43.1 | ND | 18 | ND | 5.4B | 50 | RMEG |
| Chromium (VI) | 100 | ND | ND | ND | ND | 50 | RMEG |
| Copper | 478 | 104 | 58.9 | ND | 13.7B | 1300 | MCL |
| Lead | NA | NA | NA | NA | NA | 15 | MCLA |
| Manganese | NA | NA | NA | NA | NA | 50 | RMEG |
| Nickel | NA | NA | NA | NA | NA | 100 | LTHA |
| Selenium | NA | NA | NA | NA | NA | 20 | IEMEG |
| Thallium | NA | NA | NA | NA | NA | 0.4 | LTHA |
| Vanadium | NA | NA | NA | NA | NA | 20 | LTHA |
| Fluoride | 930 | 240 | 120 | <100 | 350 | 600 | RMEG |
| Nitrate | 692 | 2800 | 1010 | 8520 | 1140 | 10000 | MCL |
| 1,1-Dichloroethene | ND | ND | ND | ND | ND | 0.06 | CREG |
| Tetrachloroethene | ND | ND | ND | ND | ND | 0.7 | CREG |
| Trichloroethene | ND | ND | ND | ND | ND | 3 | CREG |
| 1,1,1-Trichloroethane | ND | ND | ND | ND | ND | 200 | LTHA |
| Vinyl chloride | NA | NA | NA | NA | NA | 0.2 | EMEG |
Reference: 6
Dates: P-1, BP-1, and MW24 were sampled 6/91; MW25 and MW26 were sampled 8/91
Note: bolding shows contaminant concentrations that exceed comparison values
B detected below contract required limit but above instrument detection limit
NA not analyzed
ND not detected (detection limit not reported)
P-1 = Piezometer BP-1 = Berks Products Well MW = Monitoring Well
| LOCATION ID | COMPARISON VALUES FOR CONTAMINANTS (mg/kg) | NUMBER OF SAMPLES | DATE | ||||
| 0.2 CREG | 0.2 CREG | 10 pRMEG | 10 pRMEG | 100 pEMEG | |||
| CONCENTRATION RANGE (mg/kg) | |||||||
| Be (TOTAL) |
Be (SOLUBLE) |
Cr (TOTAL) |
Cr+6 | Fl | |||
| Residence #1 | 1.3-2.8 | NA | 23.4-63.5 | NA | NA | 6 | 10/26/94 |
| Residence #2 | <0.5-4.9 | NA | 7.2-37.1 | NA | NA | 6 | 10/25/94 |
| Residence #3 | 1.2-1.9 | NA | 21.0-29.3 | NA | NA | 6 | 10/26/94 |
| Residence #4 | 2.5-4.3 | NA | 26.3-92.6 | NA | NA | 7 | 10/25/94 |
| Residence #5 | 0.5-1.6 | NA | 10.2-21.8 | NA | NA | 6 | 10/26/94 |
| Residence #6 | 1.6-2.3 | NA | 20.7-45.1 | NA | NA | 7 | 10/26/94 |
| Residence #7 | 2.1 | NA | 15.0 | <0.7 | 10.2 | 1 | 11/18/92 |
| UG-1 | 1.4-2.7 | <0.004-0.0054 | 18.0-22.0 | NA | 2.0-5.0 | 3 | 07/27/94 |
| PA-1 | 1.8-3.2 | <0.004 | 21.0-31.5 | NA | 5.0-10.0 | 3 | 07/27/94 |
| PA-2 | 1.6-3.2 | <0.004 | 17.0-20.0 | NA | 2.0-3.0 | 3 | 07/27/94 |
| PA-3 | 0.8-6.9 | <0.004 | 20.0-23.0 | NA | 5.0-7.0 | 3 | 07/27/94 |
References: 10 (Residence 7), 11 (UG-1, PA-1, PA-2, PA-3), 12 (Residence 1-6), and 14 (soluble Be) Notes: 1) there is no comparison value for total chromium, the RMEG used in that column is for Cr+6 2) the "p"
preceeding RMEG and EMEG denotes "pica child" comparison values 3) bolding shows concentrations or upper ranges that exceed comparison values (residence #7 was analyzed for Cr+6; therefore, the total does not exceed the Cr+6 or Cr+3
[pRMEG 2000 mg/kg] comparison values)
Be beryllium
Cr chromium
Cr+6 hexavalent chromium
Fl Fluoride
NA not analyzed
< indicates that the contaminant was not detected at the reported value
| Contaminant | US-1 µg/L |
DS-1 µg/L |
DS-2 µg/L |
DS-3 µg/L | Comparison Value µg/L | ||||||
| 12/89 | 5/90 | 6/91 | 12/89 | 5/90 | 6/91 | 12/89 | 5/90 | 6/91 | 6/91 | ||
| Barium | 24.9 | 33.7B | NA | 26.6 | 33.2B | NA | 25.5B | 34.6B | NA | NA | 700 RMEG |
| Beryllium | ND | ND | <0.2 | 2.7B | ND | <0.2 | 1.5B | ND | 0.37B | 0.92B | 0.008 CREG |
| Chromium | NA | NA | <5.3 | NA | NA | <5.3 | NA | NA | 10.2 | 41.8 | 50 RMEG |
| Chromium VI | ND | ND | <10 | ND | ND | <10 | ND | ND | <10 | NA | 50 RMEG |
| Copper | 4.7B | 17.1B | <2.5 | 80.8 | 23.8B | 20.8B | 41.6 | 29.9 | 26.5 | 3.3B | 1300 MCL |
| Lead | ND | 2.1B | NA | ND | 1.8B | NA | 1.1B | 1.4B | NA | NA | 15 MCLA |
| Manganese | 4.6B | 6.1B | NA | 5.2B | 6.7B | NA | 6.4B | 6B | NA | NA | 50 RMEG |
| Nickel | ND | 6B | NA | ND | ND | NA | ND | 18.2B | NA | NA | 100 LTHA |
| Nitrate | 2360 | 1690 | 1480 | 2730 | 1790 | 1630 | 2670 | 1880 | 1660 | 4140 | 10000 MCL |
| Fluoride | 130 | 120 | 120 | 220 | 190 | 210 | 160 | 210 | 220 | 870 | 600 RMEG |
| 1,1-dichloroethene | ND | ND | NA | ND | ND | NA | ND | ND | NA | NA | 0.06 CREG |
| Dichloromethane | ND | ND | 6 | ND | ND | <5 | ND | ND | 45 | <5 | 5 CREG |
| PCE | ND | ND | NA | 1B | ND | NA | ND | ND | NA | NA | 0.7 CREG |
| Trichloroethene | ND | ND | NA | ND | ND | NA | ND | ND | NA | NA | 3 CREG |
| 1,1,1-trichloroethane | ND | ND | NA | ND | ND | NA | ND | ND | NA | NA | 200 LTHA |
| Vinyl Chloride | ND | ND | NA | ND | ND | NA | ND | ND | NA | NA | 0.2 EMEG |
NA = not analyzed ND = not detected (detection limit not reported) < = not detected at the reported value B =
indicates value below laboratory reporting limit but above instrument detection limit PCE = tetrachloroethene US-1 = upstream of NGK DS-1 = adjacent NGK but just downstream of NPDES DS-2 = approximately 0.1-0.2 miles downstream of NPDES DS-3 = approximately 1.5 miles downstream of NGK
Notes: (1) bolding shows contaminants of concern for this medium (2) contaminants are summarized in this table if they were selected as contaminants of concern in one of the on-site media or if they exceed the comparison value in this medium (3) on-site contaminants of concern which are not listed in this table were not analyzed for (4) references: 1 (for 12/89 & 5/90 samples) and 6 (for 6/91 samples)
| Contaminant | Stream Survey 5/13/81 µg/L |
Stream Survey 1/26/89 µg/L |
ComparisonValue µg/L | |||||
| US1 | DS1 | DS2 | US01 | DS01 | DS02 | DS03 | ||
| Arsenic | NA | NA | NA | <4 | <4 | <4 | <4 | 0.02 CREG |
| Barium | NA | NA | NA | 36 | 34 | 54 | 40 | 700 RMEG |
| Beryllium | 1000 | 2500 | 1000 | <1 | 4 | <1 | <1 | 0.008 CREG |
| Cadmium | 1 | 1 | 1 | <0.2 | <0.2 | 0.6 | <0.2 | 5 RMEG |
| Chromium | 10 | 10 | 10 | <50 | <50 | <50 | <50 | 50 RMEG |
| Chromium VI | NA | NA | NA | <10 | <10 | <10 | <26 | 50 RMEG |
| Copper | 10 | 100 | 20 | <10 | 102 | 28 | 33 | 1300 MCL |
| Lead | 10 | 10 | 10 | 5.6 | 15.8 | 36 | <4 | 15 MCLA |
| Manganese | 340000 | 210000 | 450000 | 11 | 22 | 46 | <10 | 50 RMEG |
| Nickel | NA | NA | NA | <25 | <25 | <25 | <25 | 100 LTHA |
| Selenium | NA | NA | NA | <6 | 6 | <6 | <6 | 20 IEMEG |
| Nitrate | 780 | 1980 | 2840 | NA | NA | NA | NA | 10000 MCL |
| Fluoride | 190 | 360 | 460 | NA | NA | NA | NA | 600 RMEG |
References: 18 (for 5/13/81 Stream Survey) and 19 (for 1/26/89 Stream Survey) Notes: (1) bolding shows contaminants of concern for this medium (2) contaminants are summarized in this table if they were selected as contaminants of concern in one of the on-site media or if they exceed the comparison value in this medium (3) on-site contaminants of concern which are not listed in this table were not analyzed
NA = not analyzed < = not detected at the reported value
US1 = approximately 0.25 miles upstream of NGK DS1 = approximately 0.2 miles downstream of NGK
DS2 = approximately 2 miles downstream of NGK
US01 = approximately 0.25 miles upstream of NGK
DS01 = approximately 1.5 miles downstream of NGK, but above confluence with unnamed tributary
DS02 = approximately 1.5 miles downstream of NGK, but below confluence with unnamed tributary
DS03 = approximately 2 miles downstream of NGK
| Contaminant | Stream Survey
1/13/89 µg/L |
Stream Survey 10/15/90 µg/L |
Comparison Value µg/L | |||||
| US | DS | US001 | US002 | US003 | DS001 | DS002 | ||
| Arsenic | <4 | <4 | NA | NA | NA | NA | NA | 0.02 CREG |
| Barium | <500 | <500 | NA | NA | NA | NA | NA | 700 RMEG |
| Beryllium | <1 | 1 | 1 | 1 | <25 | <25 | <25 | 0.008 CREG |
| Cadmium | <0.2 | <0.2 | NA | NA | NA | NA | NA | 5 RMEG |
| Chromium | <4 | 6.1 | NA | NA | <4 | <4 | <4 | 50 RMEG |
| Chromium VI | NA | NA | <10 | <10 | <10 | <10 | <10 | 50 RMEG |
| Copper | <10 | 46 | 15 | 12 | <50 | 66 | <50 | 1300 MCL |
| Lead | <4 | <4 | NA | NA | NA | NA | NA | 15 MCLA |
| Manganese | <50 | <50 | NA | NA | NA | NA | NA | 50 RMEG |
| Nickel | NA | NA | <25 | <25 | NA | NA | NA | 100 LTHA |
| Nitrate | 2180 | 2900 | 3150 | 3140 | 960 | 1500 | 1480 | 10000 MCL |
| Fluoride | 140 | 200 | NA | NA | NA | NA | NA | 600 RMEG |
References: 21 (for 1/13/89 Stream Survey) and 48 (for 10/15/90 Stream Survey) Notes: (1) bolding shows contaminants of concern for this medium (2) contaminants are summarized in this table if they were selected as contaminants of concern in one of the on-site media or if they exceed the comparison value in this medium (3) on-site contaminants of concern which are not listed in this table were not analyzed
NA = not analyzed < = not detected at the reported value
US = approximately 50 meters upstream of NGK NPDES outfall
DS = approximately 120 meters downstream of NGK NPDES outfall
US001 = approximately 3 miles upstream of NGK
US002 = approximately 2 miles upstream of NGK
US003 = approximately 0.1 mile upstream of NGK
DS001 = approximately 30 meters downstream of NGK NPDES outfall
DS002 = approximately 1 mile downstream of NGK
| Contaminant | Individual Sampling of Wastewater Discharge µg/L |
DMR Highest Daily Concentration 12/89-10/92 | |||||
| 1/13/89 | 3/26/91 | 3/27/91 | 9/17/91 | 10/1/91 | Conc. µg/L | Date | |
| Arsenic | <4 | NA | NA | NA | NA | NA | |
| Barium | <500 | NA | NA | NA | NA | NA | |
| Beryllium | 18 | 21.4 | 11.3 | 10 | 13 | 80 | 7/90 |
| Cadmium | 0.3 | NA | 0.32 | <10 | <10 | NA | |
| Chromium | 5.1 | NA | <4 | <50 | <50 | <10 | |
| Chromium VI | NA | NA | <1 | NA | NA | 2 | 12/91 |
| Copper | 650 | 520 | 305 | 190 | 288 | 2060 | 8/92 |
| Lead | 12.7 | 129 | <4 | <50 | <50 | 200 | 6/91 |
| Manganese | <50 | NA | NA | NA | NA | NA | |
| Nickel | NA | 84 | <25 | <25 | <25 | 47 | 9/91 |
| Nitrate | 4360 | NA | NA | NA | NA | NA | |
| Fluoride | 1000 | NA | 1090 | NA | NA | NA | |
References: 20 (for 3/26 & 3/27/91 samples), 21 (for 1/13/89 sample), 22 (for 9/17 & 10/1/91 samples), and 23 (for
11/89-10/92 sampling)
NA = not analyzed < = not detected at the reported value DMR = Discharge Monitoring Report
Note: DMR values for beryllium, copper, and lead reported here exceed permit requirements (daily discharge) for those
time periods reported, but compliance with permit requirements were generally met during the 3 years evaluated.
| Contaminant | US-1 mg/kg |
DS-1 mg/kg |
DS-2 mg/kg |
Comparison Value mg/kg | ||||||
| 12/89 | 5/90 | 6/91 | 12/89 | 5/90 | 6/91 | 12/89 | 5/90 | 6/91 | ||
| Arsenic | 0.35B | 1B | NA | 2.1B | 0.89B | NA | 1.6B | 1.5B | NA | 0.4 CREG |
| Barium | 12.2B | 22.7B | NA | 26B | 18.4B | NA | 27.2B | 28.8B | NA | 50000 RMEG |
| Beryllium | 0.36B | 0.32B | 0.24B | 1.2 | 1.7 | 2.4 | 1.3 | 1.3 | 1.4 | 0.2 CREG |
| Chromium | 4.6 | 9.1 | 1.1B | 7 | 8.1 | 14.9 | 7.4 | 6.9 | 5.7 | 4000 RMEG |
| Chromium VI | NA | NA | <0.013 | NA | NA | <0.011 | NA | NA | <0.04 | 4000 RMEG |
| Copper | 2.9B | 7.7 | 3.7 | 37.3 | 58.1 | 163 | 23.5 | 32.7 | 15.9 | 38000 EPAIII |
| Lead | 45.7 | 19 | NA | 21.8 | 14 | NA | 14.5 | 41.3 | NA | NONE |
| Manganese | 72.1 | 142 | NA | 127 | 205 | NA | 120 | 256 | NA | 4000 RMEG |
| Nickel | 3.5B | 2.5B | NA | 3.5B | 2.9B | NA | 3.8B | 3.5B | NA | 20000 EPAIII |
| Selenium | ND | ND | NA | 1.5B | ND | NA | ND | ND | NA | 2000 EMEG |
| Vanadium | 6.9B | 7.1B | NA | 8.6B | 61.3B | NA | 10.9 | 8.9B | NA | 7200 EPAIII |
| Nitrate | 3.24 | 1.92 | <0.972 | 2.93 | 2.33 | 10.2 | 3.89 | 6.66 | <1.001 | 1000000 RMEG |
| Fluoride | 6.79 | 1.05 | <0.1 | 18.6 | 75.3 | <0.1 | 36.4 | 1.11 | <0.1 | 40000 RMEG |
References: 1 (for 12/89 & 5/90 samples) and 6 (for 6/91 samples)
NA = not analyzed ND = not detected (detection limit not reported) < = not detected at the reported value
B = indicates value below laboratory reporting limit but above instrument detection limit
US-1 = upstream of NGK DS-1 = adjacent NGK but just downstream of NPDES
DS-2 = approximately 0.1-0.2 miles downstream of NPDES
Note: (1) bolding shows contaminants of concern for this medium (2) contaminants are summarized in this table if they were selected as contaminants of concern in one of the on-site media or if they exceed the comparison value in this medium (3) on-site contaminants of concern which are not listed in this table were not analyzed
| YEAR | AMBIENT AIR MAXIMUM WEEKLY CONCENTRATIONS FOR YEARS 1979-91 BERYLLIUM (µg/m3) | Comparison
Value (CREG) µg/m3 | |||||||
| STATIONS | |||||||||
| R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | ||
| 1979 | 0.00680 | 0.00060 | 0.00090 | 0.00960 | 0.00130 | 0.00200 | 0.00200 | 0.00220 | 0.0004 |
| 1980 | 0.00631 | 0.000411 | 0.010181 | 0.000934 | 0.002604 | 0.007191 | 0.000881 | 0.00088 | 0.0004 |
| 1981 | 0.042795 | 0.000271 | 0.00161 | 0.00031 | 0.000241 | 0.000181 | 0.000201 | 0.000181 | 0.0004 |
| 1982 | 0.001413 | 0.00307 | 0.00265 | 0.000313 | 0.000333 | 0.000333 | 0.000333 | 0.000173 | 0.0004 |
| 1983 | 0.00700 | 0.000141 | 0.00816 | 0.00009 | 0.00038 | 0.00007 | 0.000271 | 0.000122 | 0.0004 |
| 1984 | 0.001761 | 0.00078 | 0.00233 | 0.00026 | 0.00099 | 0.00055 | 0.000151 | 0.00010 | 0.0004 |
| 1985 | 0.001141 | 0.008601 | 0.00186 | 0.00112 | 0.001801 | 0.00104 | 0.00110 | 0.001591 | 0.0004 |
| 1986 | 0.01286 | 0.000793 | 0.004706 | 0.000733 | 0.002106 | 0.000783 | 0.00158 | 0.005001 | 0.0004 |
| 1987 | 0.02910 | 0.00129 | 0.001902 | 0.00110 | 0.00225 | 0.00093 | 0.02130 | 0.00119 | 0.0004 |
| 1988 | 0.00314 | 0.000291 | 0.00197 | 0.001715 | 0.00046 | 0.00039 | 0.000131 | 0.00030 | 0.0004 |
| 1989 | 0.08143 | 0.02105 | 0.02046 | 0.00204 | 0.00178 | 0.00122 | 0.002483 | 0.00181 | 0.0004 |
| 1990 | 0.00205 | 0.00045 | 0.00078 | 0.00018 | 0.00020 | 0.00031 | 0.00034 | 0.00020 | 0.0004 |
| 1991 | 0.00109 | 0.00068 | 0.001627 | 0.00025 | 0.00043 | 0.00056 | 0.00040 | 0.00031 | 0.0004 |
| 1992 | 0.00105 | 0.00027 | 0.00076 | 0.00017 | 0.00019 | 0.00018 | 0.00017 | 0.000287 | 0.0004 |
| 1993 | 0.00099 | 0.000397 | 0.00062 | 0.000357 | 0.00023 | 0.00020 | 0.00033 | 0.00028 | 0.0004 |
| 1994 | 0.00059 | 0.00094 | 0.00119 | 0.00060 | 0.00069 | 0.00094 | 0.00070 | 0.00055 | 0.0004 |
Reference: 25 Locations of air monitors are in Figure 9 Note: Bolding shows concentrations that exceed the comparison value
Weekly concentrations are based on 7-day samples unless noted as follows: 1 1 day concentration 2 2 day concentration 3 3 day concentration 4 4 day concentration 5 6 day concentration 6 8 day concentration 7 < 7 days were sampled; but actual number of days not reported
Sampling began on 8/1/79 and is reported through the end of 1994
| STATION | ON-SITE/OFF-SITE SITE AIR DATA | SOURCE | ||||
| DATE | µg/m3 | |||||
| BERYLLIUM | COMPARISON VALUE | CHROMIUM, TOTAL | COMPARISON VALUE | |||
| RCRA 01 | 7/2/91 | 0.00062 | 0.0004 | 0.00448 | 0.00008 | 8 |
| RCRA 02 | 7/2/91 | 0.00042 | 0.0004 | 0.00472 | 0.00008 | 8 |
| R-1 | 7/2/91 | 0.00015 | 0.0004 | 0.0063 | 0.00008 | 8 |
| RCRA 01 | 7/9/91 | 0.00011 | 0.0004 | 0.00159 | 0.00008 | 8 |
| RCRA 02 | 7/9/91 | 0.00023 | 0.0004 | 0.00145 | 0.00008 | 8 |
| R-1 | 7/9/91 | 0.00007 | 0.0004 | 0.00199 | 0.00008 | 8 |
| RCRA 01 | 7/16/91 | 0.00079 | 0.0004 | 0.00344 | 0.00008 | 8 |
| RCRA 02 | 7/16/91 | 0.00034 | 0.0004 | 0.00284 | 0.00008 | 8 |
| R-1 | 7/16/91 | 0.00039 | 0.0004 | 0.00399 | 0.00008 | 8 |
| RCRA 01 | 7/23/91 | 0.00019 | 0.0004 | 0.00616 | 0.00008 | 8 |
| RCRA 02 | 7/23/91 | 0.00017 | 0.0004 | 0.00450 | 0.00008 | 8 |
| R-1 | 7/23/91 | 0.00011 | 0.0004 | 0.00827 | 0.00008 | 8 |
| RCRA 01 | 7/30/91 | 0.00027 | 0.0004 | 0.00269 | 0.00008 | 8 |
| RCRA 02 | 7/30/91 | 0.00038 | 0.0004 | 0.00274 | 0.00008 | 8 |
| R-1 | 7/30/91 | 0.00018 | 0.0004 | 0.00512 | 0.00008 | 8 |
Note: Bolding shows values that exceed the CREG comparison values
RCRA 01 = On site RCRA 02 = On site R-1 = off site
| PATHWAY NAME | SOURCE | ENVIRONMENTAL MEDIA | POINT OF EXPOSURE | ROUTE OF EXPOSURE | EXPOSED POPULATION | TIME |
| Off-site Groundwater | NGK | Groundwater | Private Well 1 and 2 | Dermal Contact Ingestion Inhalation1 |
Users of Private Wells 1 and 2 | Past Present2 Future2 |
| On-site Ambient Air | NGK | Ambient Air | On-site and Off-site Around NGK | Inhalation | On-site Workers | Past Present Future |
| Off-site Ambient Air | NGK | Ambient Air | Off-site Around NGK | Inhalation | Residents and People Working Near NGK | Past Present Future |
| Off-site Soil | Unknown | Soil | Public and Private Areas | Dermal Contact Ingestion |
Residents and People Working and Recreating Near NGK | Past Present Future |
1 Applies to Private Well 1 only
2 Applies to Private Well 2 only
| PATHWAY NAME | SOURCE | ENVIRONMENTAL MEDIA | POINT OF EXPOSURE | ROUTE OF EXPOSURE | EXPOSED POPULATION | TIME |
| On-site Soil | NGK | Soil | On-site Waste Areas | Dermal Contact Ingestion Inhalation |
On-site Workers and Nearby Residents | Past Present Future |
| Off-site Groundwater | NGK | Groundwater | Private Well 3 and Use of Wells from within the Contaminant Plume | Dermal Contact Ingestion Inhalation |
Users of Private Well 3 and Groundwater within the Contaminant Plume | Past Present Future |
| Off-site Sediment | Point and Non-point Discharge Sources Along Laurel Run | Sediment | Laurel Run | Dermal Contact Ingestion |
Users of Laurel Run | Past Present Future |
| Off-site Surface Water | Point and Non-point Discharge Sources Along Laurel Run | Surface Water | Laurel Run | Dermal Contact Ingestion |
Users of Laurel Run | Past Present Future |
| Off-site Biota | NGK and Other Air and Surface Water Pollution Sources | Fish, Fruits, and Vegetables | Laurel Run and areas around NGK and Laurel Run | Ingestion | Laurel Run Fisheaters and Consumers of Locally Grown Fruits and Vegetables | Past Present Future |
| Workers' Clothing | NGK | Workers' Clothing | Residences | Dermal Contact Ingestion Inhalation |
Family Members of Workers Who Were Exposed to Contaminants | Past |
