Environmental monitoring for the 2021 construction includes water and air. Air monitoring is being performed around the secure landfill, Route 131 Staging Area, Haverstock Road Staging Area, and Alcoa East Plant dock during construction at those locations. Water monitoring is being performed in the river and at water intakes. These monitoring activities and results for May 2021 are summarized below. (Additional 2021 Lab Results: Current Month | April | May | June | July | August | September )
Air Monitoring - 2021 Secure Landfill Construction and Operation
Program includes particulate monitoring using real-time meters for particulates (or dust) and volatile organic compounds (VOCs) and sampling for PCB analytical testing. Corrective action levels have been established based on levels that are safe for the community for particulates, VOCs, and PCBs. The actual monitoring results are compared to the corrective action levels to determine if adjustments in construction are needed. The air monitoring locations and tabulated results are provided below.
Air Monitoring Locations - Secure Landfill
2021 Air Particulate Data (Corrective Action Level = 0.150 milligram per cubic meter above upwind location)
| Monitoring Station ID (see figure) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Date | Action Level Check | SLF-AIR1 | SLF-AIR2 | SLF-AIR3 | SLF-AIR4 | SLF-AIR-PA | SLF-AIR-PB | Notes |
| May 1 | All Below | 0.0098 | 0.0134 | 0.016 | 0.0134 | 0.0132 | 0.012 | -- |
| May 2 | All Below | 0.0048 | 0.01 | 0.009 | 0.0084 | 0.0065 | 0.003 | -- |
| May 3 | All Below | 0.0096 | 0.0148 | 0.009 | 0.0175 | NA | NA | -- |
| May 4 | All Below | 0.0143 | 0.0104 | 0.0091 | 0.0098 | 0.011 | 0.009 | -- |
| May 5 | All Below | 0.0152 | 0.035 | 0.0296 | 0.0379 | 0.0324 | 0.0201 | -- |
| May 6 | All Below | 0.0172 | 0.0301 | 0.0172 | 0.0364 | 0.0246 | 0.0179 | -- |
| May 7 | All Below | 0.0048 | 0.0128 | 0.0136 | 0.0089 | 0.012 | 0.0046 | -- |
| May 8 | All Below | 0.0069 | 0.009 | 0.0082 | 0.0098 | 0.012 | 0.0043 | -- |
| May 9 | All Below | 0.0069 | 0.0092 | 0.008 | 0.0107 | 0.0087 | 0.0045 | -- |
| May 10 | All Below | 0.0187 | 0.0183 | 0.008 | 0.0258 | NA | NA | -- |
| May 11 | All Below | 0.0069 | 0.0097 | 0.008 | 0.0108 | 0.0086 | 0.0075 | -- |
| May 12 | All Below | 0.003 | 0.0047 | 0.0022 | 0.0192 | 0.0041 | 0.0078 | -- |
| May 13 | All Below | 0.0116 | 0.0172 | 0 | 0.0148 | 0.0083 | 0.0068 | -- |
| May 14 | All Below | 0.0086 | 0.0097 | 0 | 0.0681 | 0.011 | 0.0063 | -- |
| May 15 | All Below | 0.0068 | 0.0092 | 0 | 0.0154 | 0.01 | 0.0062 | -- |
| May 16 | All Below | 0.0133 | 0.0158 | 0 | 0.0209 | 0.01 | 0.0098 | -- |
| May 17 | All Below | 0.019 | 0.0178 | 0.0156 | 0.0212 | NA | NA | -- |
| May 18 | All Below | 0.2623 | 0.0184 | 0.0142 | 0.0204 | 0.0151 | 0.009 | SLF-AIR1 level not related to field activities |
| May 19 | All Below | 0.0321 | 0.0597 | 0.0479 | 0.0595 | 0.0573 | 0.0402 | -- |
| May 20 | All Below | 0.0334 | 0.0339 | 0.04 | 0.0555 | 0.0537 | 0.0397 | -- |
| May 21 | All Below | 0.0189 | 0.0425 | 0.0355 | 0.0449 | 0.0403 | 0.0292 | -- |
| May 22 | All Below | 0.0463 | 0.0323 | 0.025 | 0.033 | 0.0281 | 0.0221 | -- |
| May 23 | All Below | 0.5294 | 0.0291 | 0.023 | 0.0364 | 0.0276 | 0.0264 | SLF-AIR1 level not related to field activities |
| May 24 | All Below | 0.0146 | 0.0197 | 0.018 | 0.0234 | NA | NA | -- |
| May 25 | All Below | 0.0192 | 0.0245 | 0.0128 | 0.0151 | 0.0145 | 0.0136 | -- |
| May 26 | All Below | 0.024 | 0.0354 | 0.0307 | 0.0392 | 0.034 | 0.0286 | -- |
| May 27 | All Below | 0.0255 | 0.0383 | 0.029 | 0.0431 | 0.034 | 0.0306 | -- |
| May 28 | All Below | 0.01 | 0.007 | 0.0073 | 0.0066 | 0.0059 | 0.005 | -- |
| May 29 | All Below | 0.0163 | 0.0188 | 0.0124 | 0.0328 | 0.0118 | 0.02 | -- |
| May 30 | All Below | 0.0181 | 0.027 | 0.023 | 0.0227 | 0.0305 | 0.0186 | -- |
| May 31 | All Below | 0.0137 | 0.0167 | 0.016 | 0.0137 | NA | NA | -- |
NA = Data not collected in accordance with plan
Particulates (milligrams per cubic meter)
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2021 Air Volatile Organic Compound Data (Corrective Action Level = 25 ppm above upwind location)
| Monitoring Station ID (see figure) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Date | Action Level Check | SLF-AIR1 | SLF-AIR2 | SLF-AIR3 | SLF-AIR4 | SLF-AIR-PA | SLF-AIR-PB | Notes |
| May 1 | All Below | 0.0487 | 0.1412 | 0.1857 | 0.2642 | 0.0021 | 0.012 | -- |
| May 2 | All Below | 0.0395 | 0 | 0.0043 | 0.3006 | 0 | 0.003 | -- |
| May 3 | All Below | 0.048 | 0.0094 | 0.0 | 0.2088 | NA | NA | -- |
| May 4 | All Below | 0.009 | 0.0946 | 0.0178 | 0.1246 | 0.0002 | 0.009 | -- |
| May 5 | All Below | 0.0018 | 0.0456 | 0.0093 | 0.0509 | 0 | 0.0201 | -- |
| May 6 | All Below | 0.0117 | 0.0003 | 0.0557 | 0.1066 | 0.0108 | 0.0179 | -- |
| May 7 | All Below | 0.0053 | 0.0212 | 0.0416 | 0.1092 | 0.0277 | 0.0046 | -- |
| May 8 | All Below | 0.0017 | 0.002 | 0.0006 | 0.0405 | 0.0723 | 0.0043 | -- |
| May 9 | All Below | 0.0001 | 0 | 0 | 0 | 0.0542 | 0.0045 | -- |
| May 10 | All Below | 0.0057 | 0 | 0 | 0 | NA | NA | -- |
| May 11 | All Below | 0.0048 | 0.0089 | 0.0027 | 0.0465 | 0.016 | 0.0075 | -- |
| May 12 | All Below | 0.009 | 0.0023 | 0.007 | 0.0519 | 0.0 | 0.0078 | -- |
| May 13 | All Below | 0.0148 | 0.0395 | 0.0762 | 0.1002 | 0.0006 | 0.0068 | -- |
| May 14 | All Below | 0.0049 | 0.027 | 0.0696 | 0.1052 | 0.0112 | 0.0063 | -- |
| May 15 | All Below | 0.0112 | 0 | 0.036 | 0 | 0.008 | 0.0062 | -- |
| May 16 | All Below | 0.0114 | 0 | 0.0406 | 0 | 0.0002 | 0.0098 | -- |
| May 17 | All Below | 0.0212 | 0.0538 | 0 | 0.0954 | NA | NA | -- |
| May 18 | All Below | 0.0214 | 0.0473 | 0.0031 | 0.0865 | 0.0004 | 0.009 | -- |
| May 19 | All Below | 0.0345 | 0.0846 | 0.0485 | 0.102 | 0 | 0.0402 | -- |
| May 20 | All Below | 0.0182 | 0.0101 | 0.0271 | 0.0511 | 0.1121 | 0.0397 | -- |
| May 21 | All Below | 0.0353 | 0.0211 | 0 | 0.0588 | 0.0699 | 0.0292 | -- |
| May 22 | All Below | 0.0329 | 0.0266 | 0 | 0.0642 | 0.0379 | 0.0221 | -- |
| May 23 | All Below | 0.0236 | 0.0264 | 0 | 0.1398 | 0 | 0.0264 | -- |
| May 24 | All Below | 0.0218 | 0.0765 | 0.1215 | 0.3948 | NA | NA | -- |
| May 25 | All Below | 0.0136 | 0.0549 | 0.0338 | 0.3965 | 0 | 0.0136 | -- |
| May 26 | All Below | 0.0253 | 0.0099 | 0.0001 | 0.2379 | 0 | 0.0286 | -- |
| May 27 | All Below | 0.0529 | 0.0945 | 0.0365 | 0.2874 | 0 | 0.0306 | -- |
| May 28 | All Below | 0.0024 | 0.0929 | 0.055 | 0.5871 | 0 | 0.005 | -- |
| May 29 | All Below | 0.0002 | 0.1362 | 0.0713 | 0.7259 | 0 | 0.02 | -- |
| May 30 | All Below | 0 | 0.1213 | 0.0446 | 0.7922 | 0 | 0.0186 | -- |
| May 31 | All Below | 0 | 0.1008 | 0.0208 | 0 | NA | NA | -- |
NA = Data not collected in accordance with plan
Volatile Organic Compounds (VOCs parts per million)
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2021 Air PCB Data (Corrective Action Level = 0.100 microgram per cubic meter)
| Monitoring Station ID (see figure) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Date | Action Level Check | SLF-AIR1 | SLF-AIR2 | SLF-AIR3 | SLF-AIR4 | SLF-AIR-PA | SLF-AIR-PB | Notes |
| May 1 | All Below | 0.000110 | 0.000200 | 0.000110 | 0.000090 | NA | NA | -- |
| May 2 | All Below | 0.000110 | 0.000380 | 0.000250 | 0.000100 | Below detectable levels | Below detectable levels | -- |
| May 3 | All Below | 0.000230 | 0.000630 | 0.000300 | 0.000250 | NA | NA | -- |
| May 4 | All Below | 0.000170 | 0.000190 | 0.000290 | 0.000170 | Below detectable levels | NA | -- |
| May 5 | All Below | 0.000270 | 0.000300 | Below detectable levels | 0.000190 | Below detectable levels | Below detectable levels | -- |
| May 6 | All Below | 0.000260 | 0.000270 | 0.000230 | 0.000180 | NA | NA | -- |
| May 7 | All Below | 0.000170 | 0.000290 | 0.000240 | 0.000190 | Below detectable levels | Below detectable levels | -- |
| May 8 | All Below | 0.000690 | 0.000360 | 0.000360 | 0.000730 | Below detectable levels | Below detectable levels | -- |
| May 9 | All Below | 0.000210 | 0.000410 | 0.000300 | 0.000140 | Below detectable levels | Below detectable levels | -- |
| May 10 | All Below | 0.000210 | 0.000410 | 0.000280 | 0.000150 | NA | NA | -- |
| May 11 | All Below | 0.000150 | 0.000600 | 0.000360 | 0.000170 | Below detectable levels | Below detectable levels | -- |
| May 12 | All Below | 0.000100 | 0.000380 | 0.000290 | 0.000120 | NA | NA | -- |
| May 13 | All Below | 0.000240 | Below detectable levels | 0.000400 | 0.000320 | Below detectable levels | Below detectable levels | -- |
| May 14 | All Below | 0.000300 | 0.000410 | 0.000360 | 0.000320 | Below detectable levels | Below detectable levels | -- |
| May 15 | All Below | 0.000140 | 0.000720 | 0.000340 | 0.000320 | Below detectable levels | Below detectable levels | -- |
| May 16 | All Below | 0.000170 | 0.000680 | 0.000290 | 0.000300 | Below detectable levels | Below detectable levels | -- |
| May 17 | All Below | 0.000330 | 0.000340 | 0.000270 | 0.000190 | NA | NA | -- |
| May 18 | All Below | 0.000300 | 0.000670 | 0.000370 | 0.000330 | Below detectable levels | Below detectable levels | -- |
| May 19 | All Below | 0.000500 | 0.000630 | 0.000510 | 0.000480 | Below detectable levels | Below detectable levels | -- |
| May 20 | All Below | 0.000390 | 0.000630 | Below detectable levels | 0.000620 | Below detectable levels | Below detectable levels | -- |
| May 21 | All Below | 0.000740 | 0.000670 | Below detectable levels | 0.000500 | Below detectable levels | Below detectable levels | -- |
| May 22 | All Below | 0.000360 | 0.000990 | 0.000690 | 0.000610 | NA | NA | -- |
| May 23 | All Below | 0.000330 | NA | 0.001210 | 0.000560 | NA | NA | -- |
| May 24 | All Below | 0.000180 | 0.000230 | Below detectable levels | Below detectable levels | NA | NA | -- |
| May 25 | All Below | 0.000350 | 0.000310 | Below detectable levels | 0.000230 | Below detectable levels | Below detectable levels | -- |
| May 26 | All Below | 0.000260 | 0.000700 | 0.000500 | 0.000470 | NA | NA | -- |
| May 27 | All Below | 0.000260 | 0.000720 | 0.000290 | 0.000590 | NA | NA | -- |
| May 28 | All Below | 0.000170 | 0.000130 | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 29 | All Below | 0.000210 | 0.000280 | 0.000150 | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 30 | All Below | 0.000320 | 0.000230 | Below detectable levels | 0.000190 | Below detectable levels | Below detectable levels | -- |
NA = Analysis not required in accordance with plan
Total PCBs (micrograms per cubic meter)
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Air Monitoring - 2021 Route 131 Staging Area
Program includes particulate monitoring using real-time meters for particulates (or dust) and volatile organic compounds (VOCs) and sampling for PCB analytical testing during handling of potential PCB-containing material. Corrective action levels have been established based on levels that are safe for the community for particulates, VOCs, and PCBs. The actual monitoring results are compared to the corrective action levels to determine if adjustments in construction are needed. The air monitoring locations and tabulated results are provided below.
Air Monitoring Locations - Rt 131 Staging Area
2021 Air Particulate Data (Corrective Action Level = 0.150 milligram per cubic meter above upwind location)
| Monitoring Station ID (see figure) | ||||||
|---|---|---|---|---|---|---|
| Date | Action Level Check | SA-AIR1 | SA-AIR2 | SA-AIR3 | SA-AIR4 | Notes |
| May 1 | See notes | 0.0132 | 0.0125 | 0.1535 | 0.0119 | SA-AIR3 level due to steam release, operations reviewed and adjusted. |
| May 2 | All Below | 0.0069 | 0.0064 | 0.0467 | 0.0079 | -- |
| May 3 | All Below | 0.0108 | 0.0079 | 0.021 | 0.0105 | -- |
| May 4 | All Below | 0.0077 | 0.0084 | 0.0095 | 0.008 | -- |
| May 5 | All Below | 0.0261 | 0.0156 | 0.0311 | 0.0286 | -- |
| May 6 | All Below | 0.0255 | 0.0174 | 0.0566 | 0.0263 | -- |
| May 7 | All Below | 0.0065 | 0.0079 | 0.026 | 0.1025 | SA-AIR4 levels not related to field activities. |
| May 8 | All Below | 0.0091 | 0.0067 | 0.0104 | 0.0079 | -- |
| May 9 | All Below | 0.012 | 0.0085 | 0.0929 | 0.0077 | -- |
| May 10 | All Below | 0.0093 | 0.008 | 0.0097 | 0.0091 | -- |
| May 11 | All Below | 0.012 | 0.007 | 0.0224 | 0.0152 | -- |
| May 12 | All Below | 0.009 | 0.0083 | 0.0384 | 0.0102 | -- |
| May 13 | All Below | 0.0102 | 0.0095 | 0.0278 | 0.0108 | -- |
| May 14 | All Below | 0.0228 | 0.0072 | 0.014 | 0.026 | -- |
| May 15 | All Below | 0.0153 | 0.0076 | 0.0643 | 0.0246 | -- |
| May 16 | All Below | 0.0163 | 0.0086 | 0.0132 | 0.0173 | -- |
| May 17 | All Below | 0.0199 | 0.0123 | 0.0213 | 0.0135 | -- |
| May 18 | All Below | 0.0274 | 0.0089 | 0.0151 | 0.0147 | -- |
| May 19 | All Below | 0.0364 | 0.0286 | 0.0416 | 0.0372 | -- |
| May 20 | All Below | 0.0335 | 0.0231 | 0.0346 | 0.0335 | -- |
| May 21 | All Below | 0.0359 | 0.0197 | 0.0322 | 0.0311 | -- |
| May 22 | All Below | 0.0364 | 0.0154 | 0.0266 | 0.0338 | -- |
| May 23 | All Below | 0.0352 | 0.0155 | 0.0262 | 0.0314 | -- |
| May 24 | All Below | 0.024 | 0.0094 | 0.0469 | 0.0677 | -- |
| May 25 | All Below | 0.0163 | 0.018 | 0.0112 | 0.0209 | -- |
| May 26 | All Below | 0.0374 | 0.0192 | 0.0273 | 0.0314 | -- |
| May 27 | All Below | 0.0485 | 0.0196 | 0.0526 | 0.0511 | -- |
| May 28 | All Below | 0.0236 | 0.0083 | 0.0212 | 0.0049 | -- |
| May 29 | All Below | 0.0131 | 0.0118 | 0.0293 | 0.0359 | -- |
| May 30 | All Below | 0.02 | 0.0171 | 0.022 | 0.0205 | -- |
| May 31 | All Below | 0.0125 | 0.0094 | 0.0262 | 0.0363 | -- |
NA = Data not collected in accordance with plan
Particulates (milligrams per cubic meter)
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2021 Air Volatile Organic Compound Data (Corrective Action Level = 25 ppm above upwind location)
| Monitoring Station ID (see figure) | ||||||
|---|---|---|---|---|---|---|
| Date | Action Level Check | SA-AIR1 | SA-AIR2 | SA-AIR3 | SA-AIR4 | Notes |
| May 1 | All Below | 0.0092 | 0 | 0.0548 | 0.0002 | -- |
| May 2 | All Below | 0 | 0 | 0.0119 | 0 | -- |
| May 3 | All Below | 0 | 0.0011 | 0.0004 | 0.0276 | -- |
| May 4 | All Below | 0.0003 | 0.0023 | 0 | 0.0002 | -- |
| May 5 | All Below | 0.0003 | 0.0022 | 0.0025 | 0 | -- |
| May 6 | All Below | 0.0029 | 0.0001 | 0.0252 | 0.0008 | -- |
| May 7 | All Below | 0.0091 | 0.001 | 0.1345 | 0.0257 | -- |
| May 8 | All Below | 0.0044 | 0.0002 | 0.0029 | 0.0222 | -- |
| May 9 | All Below | 0 | 0.0002 | 0 | 0.0002 | -- |
| May 10 | All Below | 0.0015 | 0.0006 | 0 | 0.0002 | -- |
| May 11 | All Below | 0.0025 | 0 | 0.0005 | 0.0006 | -- |
| May 12 | All Below | 0.0002 | 0 | 0.0043 | 0.0001 | -- |
| May 13 | All Below | 0.0125 | 0 | 0.0359 | 0.0269 | -- |
| May 14 | All Below | 0.019 | 0 | 0.0495 | 0.0003 | -- |
| May 15 | All Below | 0.0001 | 0 | 0.1124 | 0 | -- |
| May 16 | All Below | 0.0016 | 0 | 0.0091 | 0 | -- |
| May 17 | All Below | 0.0001 | 0.0079 | 0 | 0 | -- |
| May 18 | All Below | 0 | 0.0001 | 0 | 0 | -- |
| May 19 | All Below | 0 | 0.0005 | 0.0035 | 0 | -- |
| May 20 | All Below | 0.0008 | 0.0003 | 0.0707 | 0 | -- |
| May 21 | All Below | 0 | 0 | 0.0008 | 0 | -- |
| May 22 | All Below | 0 | 0 | 0.0626 | 0 | -- |
| May 23 | All Below | 0 | 0 | 0.001 | 0 | -- |
| May 24 | All Below | 0.0112 | 0 | 0 | 0 | -- |
| May 25 | All Below | 0.0002 | 0 | 0.0036 | 0 | -- |
| May 26 | All Below | 0 | 0 | 0.0052 | 0 | -- |
| May 27 | All Below | 0 | 0 | 0.0008 | 0 | -- |
| May 28 | All Below | 0.0116 | 0 | 0.0105 | 0 | -- |
| May 29 | All Below | 0.0127 | 0 | 0 | 0 | -- |
| May 30 | All Below | 0.0046 | 0 | 0 | 0 | -- |
| May 31 | All Below | 0 | 0 | 0 | 0 | -- |
NA = Data not collected in accordance with plan
Volatile Organic Compounds (VOCs parts per million)
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2021 Air PCB Data (Corrective Action Level = 0.100 microgram per cubic meter)
| Monitoring Station ID (see figure) | ||||||
|---|---|---|---|---|---|---|
| Date | Action Level Check | SA-AIR1 | SA-AIR2 | SA-AIR3 | SA-AIR4 | Notes |
| May 1 | All Below | Below detectable levels | Below detectable levels | 0.000400 | 0.000100 | -- |
| May 2 | All Below | Below detectable levels | Below detectable levels | 0.000310 | Below detectable levels | -- |
| May 3 | All Below | Below detectable levels | Below detectable levels | 0.000280 | 0.000250 | -- |
| May 4 | All Below | Below detectable levels | Below detectable levels | 0.000140 | 0.000150 | -- |
| May 5 | All Below | Below detectable levels | Below detectable levels | 0.000250 | 0.000200 | -- |
| May 6 | All Below | Below detectable levels | Below detectable levels | 0.000390 | 0.000160 | -- |
| May 7 | All Below | Below detectable levels | Below detectable levels | 0.000480 | 0.000110 | -- |
| May 8 | All Below | Below detectable levels | Below detectable levels | 0.000350 | 0.000220 | -- |
| May 9 | All Below | Below detectable levels | Below detectable levels | 0.000460 | 0.000140 | -- |
| May 10 | All Below | Below detectable levels | Below detectable levels | 0.000260 | 0.000170 | -- |
| May 11 | All Below | Below detectable levels | Below detectable levels | 0.000250 | 0.000150 | -- |
| May 12 | All Below | Below detectable levels | Below detectable levels | 0.000470 | 0.000170 | -- |
| May 13 | All Below | Below detectable levels | Below detectable levels | 0.000450 | 0.000150 | -- |
| May 14 | All Below | Below detectable levels | Below detectable levels | 0.000430 | 0.000270 | -- |
| May 15 | All Below | Below detectable levels | Below detectable levels | 0.000300 | 0.000110 | -- |
| May 16 | All Below | Below detectable levels | Below detectable levels | 0.000200 | 0.000320 | -- |
| May 17 | All Below | Below detectable levels | Below detectable levels | 0.000190 | 0.000210 | -- |
| May 18 | All Below | Below detectable levels | Below detectable levels | 0.000310 | 0.000270 | -- |
| May 19 | All Below | Below detectable levels | Below detectable levels | 0.000380 | 0.000340 | -- |
| May 20 | All Below | Below detectable levels | Below detectable levels | 0.000480 | 0.000390 | -- |
| May 21 | All Below | Below detectable levels | Below detectable levels | 0.000480 | 0.000390 | -- |
| May 22 | All Below | Below detectable levels | Below detectable levels | 0.000340 | 0.000370 | -- |
| May 23 | All Below | Below detectable levels | Below detectable levels | 0.000400 | 0.000270 | -- |
| May 24 | All Below | Below detectable levels | Below detectable levels | 0.000120 | 0.000130 | -- |
| May 25 | All Below | Below detectable levels | Below detectable levels | 0.000300 | 0.000200 | -- |
| May 26 | All Below | Below detectable levels | Below detectable levels | -- | 0.000170 | SA-AIR3 could not be analyzed |
| May 27 | All Below | Below detectable levels | Below detectable levels | 0.000210 | 0.000190 | -- |
| May 28 | All Below | Below detectable levels | Below detectable levels | 0.000170 | 0.000090 | -- |
| May 29 | All Below | Below detectable levels | Below detectable levels | 0.000120 | 0.000130 | -- |
| May 30 | All Below | Below detectable levels | Below detectable levels | 0.000180 | 0.000140 | -- |
NA = Analysis not required in accordance with plan
Total PCBs (micrograms per cubic meter)
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Air Monitoring - 2021 Dredge Mobile River Stations
Program includes sampling for PCB analytical testing. The corrective action level has been established based on a level that is safe for the community. The actual monitoring results are compared to the corrective action level to determine if adjustments in construction are needed. The air monitoring locations and tabulated results are provided below.
Air Monitoring Locations - Dredge Corridor
2021 Air PCB Data (Corrective Action Level = 0.100 microgram per cubic meter)
| Monitoring Station ID (see figure) | ||||||
|---|---|---|---|---|---|---|
| Date | Action Level Check | DC-M1 | DC-M2 | DC-M3 | DC-M4 | Notes |
| May 1 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 2 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 4 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 5 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 6 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 7 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 8 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 9 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 11 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 12 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 13 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 14 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 15 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 23 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 27 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 28 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 29 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 30 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
NA = Analysis not required in accordance with plan
Total PCBs (micrograms per cubic meter)
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Air Monitoring - 2021 Haverstock Road Support Area
Program includes particulate monitoring using real-time meters for particulates (or dust). The corrective action level has been established based on a level that is safe for the community. The actual monitoring results are compared to the corrective action level to determine if adjustments in construction are needed. The air monitoring locations and tabulated results are provided below.
Air Monitoring Locations - Haverstock Road Area
2021 Air Particulate Data (Corrective Action Level = 0.150 milligram per cubic meter above upwind location)
| Monitoring Station ID (see figure) | |||||
|---|---|---|---|---|---|
| Date | Action Level Check | HAV-AIR1 | HAV-AIR2 | HAV-AIR3 | Notes |
| May 1 | All Below | 0.0068 | 0.0131 | 0.0071 | -- |
| May 4 | All Below | 0.0049 | 0.0107 | 0.0015 | -- |
| May 5 | All Below | 0.0136 | 0.0238 | 0.0199 | -- |
| May 6 | All Below | 0.0196 | 0.0266 | 0.0167 | -- |
| May 7 | All Below | 0.0023 | 0.0057 | 0.0067 | -- |
| May 8 | All Below | 0.0046 | 0.0109 | 0.0104 | -- |
| May 11 | All Below | 0.0041 | 0.0105 | 0.0092 | -- |
| May 12 | All Below | 0.002 | 0.0069 | 0.0056 | -- |
| May 13 | All Below | 0.0103 | 0.0221 | 0.0242 | -- |
| May 14 | All Below | 0.0103 | 0.0122 | 0.0159 | -- |
| May 15 | All Below | 0.0099 | 0.011 | 0.0111 | -- |
| May 16 | All Below | 0.0108 | 0.0304 | 0.0294 | -- |
| May 17 | All Below | 0.0121 | 0.0153 | 0.0187 | -- |
| May 18 | All Below | 0.014 | 0.0208 | 0.0213 | -- |
| May 19 | All Below | 0.0172 | 0.0344 | 0.042 | -- |
| May 20 | All Below | 0.0173 | 0.0341 | 0.0334 | -- |
| May 21 | All Below | 0.0205 | 0.0318 | 0.0407 | -- |
| May 22 | All Below | 0.0247 | 0.0288 | 0.0303 | -- |
| May 23 | All Below | 0.0272 | 0.0281 | 0.0292 | -- |
| May 24 | All Below | 0.0154 | 0.0174 | 0.0165 | -- |
| May 25 | All Below | 0.0097 | 0.013 | 0.016 | -- |
| May 26 | All Below | 0.0301 | 0.0296 | 0.0303 | -- |
| May 27 | All Below | 0.0341 | 0.0308 | 0.0311 | -- |
| May 28 | All Below | 0.0046 | 0.0086 | 0.0153 | -- |
| May 29 | All Below | 0.0057 | 0.016 | 0.0212 | -- |
| May 30 | All Below | 0.0192 | 0.0476 | 0.053 | -- |
| May 31 | All Below | 0.0083 | 0.0137 | 0.0157 | -- |
NA = Data not collected in accordance with plan
Particulates (milligrams per cubic meter)
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Air Monitoring - 2021 Alcoa East Plant Dock Area
Program includes particulate monitoring using real-time meters for particulates (or dust) and volatile organic compounds (VOCs). Corrective action levels have been established based on levels that are safe for the community for particulates and VOCs. The actual monitoring results are compared to the corrective action levels to determine if adjustments in construction are needed. The air monitoring locations and tabulated results are provided below. (No active work in May.)
Air Monitoring Locations - Alcoa East Plant Dock Area
Water Monitoring - 2021 River Remediation
Program includes turbidity monitoring using real-time meters for solids and PCB analytical testing at the water intake locations and total suspended solids (TSS) and PCB analytical testing at the river locations. Corrective action levels have been established based on levels that are safe for the community for both solids and PCBs. The actual monitoring results will be compared to the corrective action levels to determine if adjustments in construction are needed. The water locations and tabulated results are provided below.
Water Column Monitoring Locations
2021 Water Column Total Suspended Solids Data (Corrective Action Level = 100 mg/L above WC-UP Level at WC-SLR)
| Monitoring Station ID (see figure) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Date | Action Level Check | WC-UP1 | WC-NF2 | WC-NF | WC-NF3 | WC-MOUTH | WC-SLR | Notes |
| May 1 | All Below | 22 | 15 | 10 | NA | NA | 8.9 | -- |
| May 3 | All Below | 15 | 22 | 10 | NA | NA | 9.5 | -- |
| May 4 | All Below | 6.6 | 6.3 | 10 | NA | NA | 7.5 | -- |
| May 5 | All Below | 5.0 | 14 | 16 | NA | NA | 5.1 | -- |
| May 6 | All Below | Below detectable levels | 13 | 7.6 | NA | NA | 6.7 | -- |
| May 7 | All Below | Below detectable levels | 19 | 13 | NA | NA | 6.3 | -- |
| May 8 | All Below | Below detectable levels | 7.6 | 6.3 | NA | NA | 6.1 | -- |
| May 10 | All Below | Below detectable levels | 5.4 | 5.3 | NA | NA | Below detectable levels | -- |
| May 11 | All Below | Below detectable levels | 13 | Below detectable levels | NA | NA | Below detectable levels | -- |
| May 12 | All Below | Below detectable levels | 23 | Below detectable levels | NA | NA | Below detectable levels | -- |
| May 13 | All Below | Below detectable levels | 13 | 7.5 | NA | NA | 7.6 | -- |
| May 14 | All Below | Below detectable levels | 69 | 5.2 | NA | NA | Below detectable levels | -- |
| May 15 | All Below | Below detectable levels | NA | 85 | NA | 8.5 | Below detectable levels | -- |
| May 17 | All Below | Below detectable levels | NA | Below detectable levels | NA | 7.1 | 5.0 | -- |
| May 18 | All Below | Below detectable levels | 17 | 18 | NA | 6.9 | Below detectable levels | -- |
| May 19 | All Below | Below detectable levels | 25 | 9.9 | NA | 9.1 | Below detectable levels | -- |
| May 20 | All Below | Below detectable levels | Below detectable levels | 12 | NA | 11 | 8.8 | -- |
| May 21 | All Below | Below detectable levels | 7.8 | 14 | NA | 12 | 11 | -- |
| May 22 | All Below | Below detectable levels | 9.5 | 11 | 8.0 | NA | 9.9 | -- |
| May 24 | All Below | Below detectable levels | 6.7 | Below detectable levels | 5.1 | NA | Below detectable levels | -- |
| May 25 | All Below | Below detectable levels | 8.4 | 6.4 | 16 | NA | 6.1 | -- |
| May 26 | All Below | Below detectable levels | 56 | 5.7 | NA | NA | 5.9 | -- |
| May 27 | All Below | Below detectable levels | 23 | 5.7 | NA | NA | 5.1 | -- |
| May 28 | All Below | Below detectable levels | 100 | Below detectable levels | NA | NA | Below detectable levels | -- |
| May 29 | All Below | Below detectable levels | 110 | 6.3 | NA | NA | 5.0 | WC-NF2 above advisory level criteria resulting in operations review |
Total Suspended Solids (TSS; milligrams per liter)
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2021 Water Column PCB Data (Corrective Action Level at WC-SLR = 0.5 microgram per liter)
| Monitoring Station ID (see figure) | |||||||
|---|---|---|---|---|---|---|---|
| Date | Action Level Check | WC-UP2 | WC-NF2 | WC-NF | WC-MOUTH | WC-SLR | Notes |
| May 1 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 3 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 4 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 5 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 6 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 7 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 10 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 11 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 12 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 13 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 14 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 15 | All Below | NA | NA | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 17 | All Below | NA | NA | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 18 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 19 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 20 | All Below | NA | Below detectable levels | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 21 | All Below | NA | Below detectable levels | NA | Below detectable levels | Below detectable levels | -- |
| May 22 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 24 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 25 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 26 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 27 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 28 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
| May 29 | All Below | Below detectable levels | NA | Below detectable levels | NA | Below detectable levels | -- |
Total PCBs (micrograms per liter)
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Water Intake Monitoring Locations
2021 Water Intake Turbidity Data (Corrective Action Level = 25 NTU above Baseline Level)
| Monitoring Station ID (see figure) | |||||
|---|---|---|---|---|---|
| Date | Action Level Check | IN-AE-RAW | IN-SRMT-RAW | IN-SRMT-FIL | Notes |
| May 1 | All Below | 0.8 | 1.0 | 0.1 | -- |
| May 3 | All Below | 1.2 | 0.6 | 0.3 | -- |
| May 4 | All Below | 1.6 | 2.0 | 0.2 | -- |
| May 5 | All Below | 0.7 | 1.5 | 0.2 | -- |
| May 6 | All Below | 1.2 | 1.4 | 0.3 | -- |
| May 7 | All Below | 1.2 | 1.2 | 0.2 | -- |
| May 8 | All Below | 1.3 | 1.0 | 0.1 | -- |
| May 10 | All Below | 0.2 | 1.6 | 0.0 | -- |
| May 10 | All Below | 0.2 | 1.6 | 0.0 | -- |
| May 11 | All Below | 1.0 | 1.0 | 0.0 | -- |
| May 12 | All Below | 1.5 | 1.2 | 0.0 | -- |
| May 13 | All Below | 1.2 | 1.9 | 0.0 | -- |
| May 14 | All Below | 1.1 | 0.9 | 0.0 | -- |
| May 15 | All Below | 1.0 | 1.3 | 0.1 | -- |
| May 17 | All Below | 1.3 | 0.9 | 0.0 | -- |
| May 18 | All Below | 0.9 | 1.1 | 0.1 | -- |
| May 19 | All Below | 1.4 | 1.0 | 0.0 | -- |
| May 20 | All Below | 0.5 | 1.0 | 0.0 | -- |
| May 21 | All Below | 1.4 | 1.1 | 0.1 | -- |
| May 24 | All Below | 0.9 | 0.1 | 1.1 | -- |
| May 25 | All Below | 1.3 | 1.0 | 0.0 | -- |
| May 26 | All Below | 1.1 | 0.0 | 0.9 | -- |
| May 27 | All Below | 1.5 | 0.0 | 1.0 | -- |
| May 28 | All Below | 0.8 | 1.4 | 0.0 | -- |
| May 29 | All Below | 0.9 | 1.1 | 0.0 | -- |
Turbidity (Nephelometric Turbidity Unit)
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2021 Water Intake PCB Data (Corrective Action Level at WC-SLR = 0.5 microgram per liter)
| Monitoring Station ID (see figure) | |||||
|---|---|---|---|---|---|
| Date | Action Level Check | WC-AW-RAW | WC-SRMT-RAW | WC-SRMT-FIL | Notes |
| May 1 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 3 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 4 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 5 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 6 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 7 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 10 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 11 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 12 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 13 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 14 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 15 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 17 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 18 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 19 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 20 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 21 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 22 | -- | -- | -- | -- | No samples due to field delay |
| May 24 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 25 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 26 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 27 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 28 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
| May 29 | All Below | Below detectable levels | Below detectable levels | Below detectable levels | -- |
Total PCBs (micrograms per liter)
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