2019 Construction Monitoring

Environmental monitoring for the 2019 construction includes water and air monitoring. Air monitoring is being performed around the secure landfill, water and air monitoring are being performed for the staging area during the in-river shoreline work, air monitoring is being performed around soil removal areas along the north shore of the river near the Alcoa Bridge, and water and air monitoring are being performed for the in-river capping test. These monitoring activities and results are summarized below.

 

Air Monitoring - 2019 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

Site Map
 

2019 Air Particulate Data
(Corrective Action Level = 0.150 milligrams per cubic meter above upwind location)

April Particulate Data |

  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 0.0137 0.051 0.0129 0.0105 0.0097 0.016 --
May 2 All Below 0.016 0.0179 0.0181 0.0192 0.0205 0.018 --
May 3 All Below 0.0357 0.0357 0.0445 0.0375 0.038 0.0462 --
May 4 All Below 0.052 0.0529 0.0549 0.0501 NA 0.0592 --
May 5 All Below 0.0285 0.0303 0.0481 0.042 0.0834 0.0289 --
May 6 All Below 0.0247 0.027 0.0273 0.0209 0.0217 0.0219 --
May 7 All Below 0.0185 0.0168 0.0269 0.0221 0.014 0.0245 --
May 8 All Below 0.0111 0.008 0.0141 0.0127 0.0075 0.0107 --
May 9 All Below 0.011 0.0081 0.014 0.0057 0.0125 0.0113 SLF-AIR-PB levels not related to field activities.
May 10 All Below 0.0267 0.0191 0.0234 0.0191 0.0213 0.0234 --
May 11 All Below 0.0131 0.0111 0.0151 0.0095 0.0077 0.0131 --
May 12 All Below 0.0169 0.0183 0.0181 0.0157 0.021 0.0161 --
May 13 All Below 0.0163 0.0167 0.0152 0.0163 0.0139 0.0157 --
May 14 All Below 0.0155 0.0081 0.0173 0.0165 0.017 0.0243 --
May 15 All Below 0.0248 0.0229 0.026 0.0283 0.0219 0 --
May 16 All Below 0.0225 0.0245 0.0246 0.0283 0.0191 0.0186 --
May 17 All Below 0.0133 0.0066 0.0116 0.0085 0.0049 0.0088 --
May 18 All Below 0.0209 0.0171 0.0251 0.0222 0.0127 0.0227 --
May 19 All Below 0.0155 0.0183 0.0259 0.0232 0.0176 0.0223 --
May 20 All Below 0.0255 0.03 0.0348 0.0351 NA NA --
May 21 All Below 0.024 0.0235 0.024 0.0231 0.011 0.019 --
May 22 All Below 0.0143 0.0132 0.0174 0.0135 0.0143 0.0154 --

NA = Data not collected
Particulates (milligrams per cubic meter)
Return to top


2019 Air Volatile Organic Compound Data
(Corrective Action Level = 25 ppm above upwind location)

April VOC Data |

  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 0.033 0.0318 0.0161 0.1585 0.1401 0.0716 --
May 2 All Below 0.1744 0.0797 0.1379 0.028 0.0223 0.0222 --
May 3 All Below 0.0088 0.0457 0.0671 0.0934 0.0084 0.1996 --
May 4 All Below 0.0182 0.0489 0.0009 0.0657 NA 0.0795 --
May 5 All Below 0.2326 0.1595 0.2165 0.1811 0.217 0.145 --
May 6 All Below 0.0026 0.0971 0.0182 0.2082 0.0745 0.1559 --
May 7 All Below 0.0002 0.3203 0.0005 0.2421 0.3498 0.1165 --
May 8 All Below 0.3533 0.1513 0.3345 0.1901 0.2507 0.1131 --
May 9 All Below 0.0296 0.0099 0.0369 0.1592 0.0243 0.0018 --
May 10 All Below 0.0295 0.0191 0.0059 0.1262 0.0283 0.0115 --
May 11 All Below 0.2254 0.0167 0.3477 0.1812 0.1604 0.123 --
May 12 All Below 0.0589 0.0252 0.0468 0.0883 0.1352 2.8598 --
May 13 All Below 0.0545 0.0185 0.0455 0.1072 0.3449 2.8964 --
May 14 All Below 0.1492 0.0103 0.0676 0.0729 0.7233 0.8793 --
May 15 All Below 0.0728 0.0422 0.2505 0.0644 0.1482 0.9395 --
May 16 All Below 0.0862 0.0324 0.0503 0.0955 0 0.8794 --
May 17 All Below 0.0586 0.0681 0.0405 0.1159 0.0205 0.3106 --
May 18 All Below 0.4005 0.1277 0.1689 0.1167 0.1709 0.8905 --
May 19 All Below 0.2743 0.1012 0.1379 0.1579 0.0019 0.4439 --
May 20 All Below 1.7879 0.1215 0.0052 0.1588 0.NA 0.NA --
May 21 All Below 0.7579 0.2523 0.3366 0.138 0.6069 2.5601 --
May 22 All Below 6.4829 0.0571 0.0897 0.0697 0.1906 1.5167 SLF-AIR1 levels not related to field activities.

NA = Data not collected
Volatile Organic Compounds (VOCs parts per million)
Return to top


2019 Air PCB Data
(Corrective Action Level = 0.100 micrograms per cubic meter)

April PCB Data |

  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 0.000750 0.001300 0.000210 0.000150 Below Detectable Levels Below Detectable Levels --
May 2 All Below 0.000110 Below Detectable Levels 0.000100 0.000067 Below Detectable Levels Below Detectable Levels --
May 3 All Below 0.000580 0.000330 0.000880 0.000430 Below Detectable Levels Below Detectable Levels --
May 4 All Below 0.000120 0.001000 0.000200 0.000280 Below Detectable Levels Below Detectable Levels --
May 5 All Below 0.000220 0.000300 0.004000 0.016600 Below Detectable Levels Below Detectable Levels --
May 6 All Below 0.002400 0.004400 0.000730 0.000290 Below Detectable Levels Below Detectable Levels --
May 7 All Below 0.000310 0.001500 0.007200 0.000980 Below Detectable Levels -- --
May 8 All Below 0.000510 0.003600 0.000650 0.000160 Below Detectable Levels Below Detectable Levels --
May 9 All Below 0.000190 0.002310 0.000230 0.000210 Below Detectable Levels Below Detectable Levels --
May 10 All Below 0.001290 0.002360 0.000410 0.005400 Below Detectable Levels Below Detectable Levels --
May 11 All Below 0.000360 0.000540 0.009900 0.002700 Below Detectable Levels -- --
May 12 All Below 0.001650 0.002580 0.000300 0.000280 Below Detectable Levels Below Detectable Levels --
May 13 All Below 0.000580 0.001040 0.000640 0.002950 -- -- --
May 14 All Below 0.000520 0.000240 0.000670 0.000085 Below Detectable Levels Below Detectable Levels --
May 15 All Below 0.002030 0.001430 0.000150 0.001460 Below Detectable Levels Below Detectable Levels --
May 16 All Below 0.001400 0.002220 0.008200 0.001600 Below Detectable Levels Below Detectable Levels --
May 17 All Below 0.000360 0.001810 0.006000 0.000350 Below Detectable Levels Below Detectable Levels --

NA = Analysis not required
Total PCBs (micrograms per cubic meter)
Return to top

 

Air Monitoring - 2019 River Remediation (Including Route 131 Staging Area and River Locations)

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

Site Map
 


2019 Air Particulate Data
(Corrective Action Level = 0.150 milligrams per cubic meter above upwind location)

April Staging Area Air Particulate Data |

  Monitoring Station ID (see figure)  
Date Action Level Check SA-AIR1 SA-AIR2 SA-AIR3 SA-AIR4 Notes
May 1 All Below 0.0134 0.0082 0.0144 0.0085 --
May 2 All Below 0.0195 0.0128 0.0163 0.0168 --
May 3 All Below 0.0445 0.0273 0.0318 0.0316 --
May 4 All Below 0.0574 0.0363 0.0455 0.0426 --
May 5 All Below 0.026 0.1185 0.0233 0.0243 SA-AIR2 levels not related to field activities.
May 6 All Below 0.0372 0.022 0.0222 0.1849 SA-AIR4 levels not related to field activities.
May 7 All Below 0.0189 0.0111 0.0225 0.0089 --
May 8 All Below 0.0111 0.0063 0.0271 0.0115 --
May 9 All Below 0.0113 0.008 0.0113 0.0253 --
May 10 All Below 0.0142 0.0148 0.0161 0.0105 --
May 11 All Below 0.0119 0.0058 0.0083 0.007 --
May 12 All Below 0.019 0.0132 0.0169 0.0166 --
May 13 All Below 0.0165 0.0121 0.0143 0.0127 --
May 14 All Below 0.0235 0.0121 0.006 0.006 --
May 15 All Below 0.0196 0.0217 0.0169 0.0162 --
May 16 All Below 0.0189 0.0213 0.0198 0.0135 --
May 17 All Below 0.0091 0.0087 0.0097 0.0065 --
May 18 All Below 0.0213 0.0165 0.1145 0.0127 --
May 19 All Below 0.0376 0.0281 0.0322 0.0349 --
May 20 All Below 0.0485 0.0383 0.0276 0.0289 --
May 21 All Below 0.0455 0.0371 0.0299 0.0324 --
May 22 All Below 0.0167 0.0095 0.0543 0.0105 --

NA = Data not collected or recorded
Particulates (milligrams per cubic meter)
Return to top


2019 Air Volatile Organic Compound Data
(Corrective Action Level = 25 ppm above upwind location)

April Staging Area VOC Data |

  Monitoring Station ID (see figure)  
Date Action Level Check SA-AIR1 SA-AIR2 SA-AIR3 SA-AIR4 Notes
May 1 All Below 0.0381 0.0505 0.1045 0.0115 --
May 2 All Below 0.2163 0.2866 0.4105 0.1875 --
May 3 All Below 0.0015 0.0177 0.0039 0.0517 --
May 4 All Below 0.0011 0.0342 0 0.0138 --
May 5 All Below 0.2375 0.2594 0.4633 0.1226 --
May 6 All Below 0.1453 0.2008 0.4029 0.1005 --
May 7 All Below 0.0035 0.0187 0.1951 0.0014 --
May 8 All Below 0.3889 0.5585 0.6563 0.2357 --
May 9 All Below 0.0462 0.0251 0.0528 0.0363 --
May 10 All Below 0.0489 0.0469 0.0162 0.0374 --
May 11 All Below 0.3825 0.6303 0.7267 0.2893 --
May 12 All Below 0.0896 0.0602 0.21875 0.133 --
May 13 All Below 0.0943 0.0239 0.2105 0.1396 --
May 14 All Below 0.1379 0.2773 0.4726 0.1261 --
May 15 All Below 0.0858 0.1577 0.3333 0.0681 --
May 16 All Below 0.0342 0.0917 0.3459 0.0257 --
May 17 All Below 0.0363 0.4647 0.792 0.0871 --
May 18 All Below 0.2468 2.3996 1.3269 0.358 --
May 19 All Below 0 1.9241 1.2289 0.0279 --
May 20 All Below 0.0196 2.8611 0.9063 0.2384 --
May 21 All Below 0.529 4.5655 1.1985 0.4507 --
May 22 All Below 0.1174 7.4318 3.2097 0.6011 SA-AIR2 levels not related to field activities.

NA = Data not collected or recorded
Volatile Organic Compounds (VOCs parts per million)
Return to top

 

2019 Air PCB Data - Staging Area
(Corrective Action Level = 0.100 micrograms per cubic meter)

April Staging Area PCB Data |

  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 0.006100 0.000220 --
May 2 All Below Below Detectable Levels Below Detectable Levels 0.000120 0.000058 --
May 3 All Below Below Detectable Levels Below Detectable Levels 0.002390 0.000120 --
May 4 All Below Below Detectable Levels Below Detectable Levels 0.005240 0.000460 --
May 5 All Below Below Detectable Levels Below Detectable Levels 0.007010 0.003760 --
May 6 All Below Below Detectable Levels Below Detectable Levels 0.004680 0.000990 --
May 7 All Below Below Detectable Levels Below Detectable Levels 0.008900 0.005270 --
May 8 All Below Below Detectable Levels Below Detectable Levels 0.018600 0.000280 --
May 9 All Below Below Detectable Levels Below Detectable Levels 0.007400 0.000280 --
May 10 All Below Below Detectable Levels Below Detectable Levels 0.001890 0.003080 --
May 11 All Below Below Detectable Levels Below Detectable Levels 0.016200 0.009400 --
May 12 All Below Below Detectable Levels Below Detectable Levels 0.025400 0.000570 --
May 13 All Below Below Detectable Levels Below Detectable Levels 0.002760 0.000400 --
May 14 All Below Below Detectable Levels Below Detectable Levels 0.002080 0.003070 --
May 15 All Below Below Detectable Levels Below Detectable Levels 0.004450 0.000220 --
May 16 All Below Below Detectable Levels Below Detectable Levels 0.014700 0.002000 --
May 17 All Below Below Detectable Levels Below Detectable Levels 0.012800 0.000570 --

NA = Data not collected or recorded
Total PCBs (micrograms per cubic meter)
Return to top

 

2019 Air PCB Data - Mobile River Stations
(Corrective Action Level = 0.100 micrograms per cubic meter)

April Staging Area PCB Data |

  Monitoring Station ID (see figure)  
Date Action Level Check DC-M1 DC-M2 DC-M3 DC-M4 DC-M5 DC-M6 Notes
May 1 All Below Below Detectable Levels 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 -- --
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 7 All Below -- -- Below Detectable Levels Below Detectable Levels Below Detectable Levels -- --
May 8 All Below -- -- 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 Below Detectable Levels --
May 10 All Below Below Detectable Levels -- 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 Below Detectable Levels -- --
May 12 All Below Below Detectable Levels 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 Below Detectable Levels --
May 15 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels Below Detectable Levels Below Detectable Levels Below Detectable Levels --
May 16 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels Below Detectable Levels Below Detectable Levels Below Detectable Levels --
May 17 All Below Below Detectable Levels -- Below Detectable Levels Below Detectable Levels Below Detectable Levels Below Detectable Levels --

NA = Data not collected or recorded
Total PCBs (micrograms per cubic meter)
Return to top

 

Air Monitoring - 2019 Soil Removal Areas Along the North Shore

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 (Click to enlarge)

Site Map
 


2019 Air Particulate Data
(Corrective Action Level = 0.150 milligrams per cubic meter above upwind location)

April Upland Particulate Data |

  Monitoring Station ID (see figure)  
Date Action Level Check UP-AIR1 UP-AIR2 UP-AIR3 UP-AIR4 UP-AIR5 SLF-AIR1 SLF-AIR2 SLF-AIRPA SA-AIR1 Notes
May 1 All Below 0.0123 0.007 0.011 -- 0.0115 0.0137 0.0151 0.0097 0.0134 --
May 2 All Below 0.0166 0.0105 0.0208 -- 0.0213 0.016 0.0179 0.0205 0.0195 --
May 3 All Below 0.0358 0.0205 0.0359 -- 0.0361 0.0357 0.0357 0.038 0.0445 --
May 4 All Below 0.0547 0.0296 0.0543 -- 0.0543 0.052 0.0529 -- 0.0574 --
May 7 All Below 0.0207 0.0106 0.012 -- 0.0155 0.0185 0.0168 0.014 0.0189 --
May 8 All Below 0.0093 0.0043 0.0106 -- 0.0098 0.0111 0.008 0.0075 0.0111 --
May 9 All Below 0.0101 0.006 0.0089 -- 0.0103 0.011 0.0081 0.0125 0.0113 --
May 10 All Below 0.0226 0.0153 0.0346 -- 0.018 0.0267 0.0191 0.0213 0.0142 --
May 11 All Below 0.0103 0.0071 0.0107 -- 0.0143 0.0131 0.0111 0.0077 0.0119 --
May 14 All Below 0.0141 0.0119 0.0205 -- 0.007 0.0155 0.0081 0.017 0.0235 --
May 15 All Below 0.0263 0.0217 0.0284 -- 0.0244 0.0248 0.0229 0.0219 0.0196 --
May 16 All Below 0.0244 0.0217 0.0292 -- 0.029 0.0225 0.0245 0.0191 0.0189 --
May 17 All Below 0.0087 0.0117 0.0151 -- 0.0086 0.0133 0.0066 0.0049 0.0091 --
May 18 All Below 0.0182 0.0135 0.0233 -- 0.0221 0.0209 0.0171 0.0127 0.0213 --
May 21 All Below 0.0265 0.0263 0.0291 -- 0.0486 0.024 0.0235 0.011 0.0455 --
May 22 All Below 0.0162 0.0212 0.0493 -- 0.0113 0.0143 0.0132 0.0143 0.0167 --

NA = Data not collected or recorded
Particulates (milligrams per cubic meter)
Return to top


2019 Air Volatile Organic Compound Data
(Corrective Action Level = 25 ppm above upwind location)

April Upland VOC Data |

  Monitoring Station ID (see figure)  
Date Action Level Check UP-AIR1 UP-AIR2 UP-AIR3 UP-AIR4 UP-AIR5 SLF-AIR1 SLF-AIR2 SLF-AIR-PA SA-AIR1 Notes
May 1 All Below 0.8369 1.1683 0.0215 -- 0.0172 0.033 0.0318 0.1401 0.0381 --
May 2 All Below 0.5582 0.5853 0.1005 -- 0.0105 0.1744 0.0797 0.0223 0.2163 --
May 3 All Below 0.6032 0.185 0.0161 -- 0.0171 0.0088 0.0457 0.0084 0.0015 --
May 4 All Below 0.877 0.0114 0.0053 -- 0.0011 0.0182 0.0489 -- 0.011 --
May 7 All Below 0.0001 1.9581 0.1015 -- 0.0104 0.0002 0.3203 0.3948 0.0035 --
May 8 All Below 0.0473 1.3279 0.0836 -- 0.0622 0.3533 0.1513 0.2507 0.3889 --
May 9 All Below 0.0173 0.0806 0.0037 -- 0.0094 0.0296 0.0099 0.0243 0.0462 --
May 10 All Below 0.0137 0.1763 0.0037 -- 0.0068 0.0295 0.0191 0.0283 0.0489 --
May 11 All Below 0.0623 1.2644 0.1196 -- 0.0443 0.2254 0.167 0.1604 0.3825 --
May 14 All Below 0.0608 2.898 0.3479 -- 0.0789 0.1492 0.0103 0.7233 0.1379 --
May 15 All Below 0.022 0.9755 0.1594 -- 0.0469 0.0728 0.0422 0.1482 0.0858 --
May 16 All Below 0.037 0.0048 0.1618 -- 0.0229 0.0862 0.0324 0 0.0342 --
May 17 All Below 0.0333 0.0121 0.0003 -- 0.0045 0.0586 0.0681 0.0205 0.0363 --
May 18 All Below 0.0146 0.1481 0.0055 -- 0.0278 0.4005 0.1277 0.1709 0.2468 --
May 21 All Below 0 0.0031 0.0024 -- 1.5333 0.7579 0.2523 0.6069 0.529 --
May 22 All Below 0 0.578 0 -- 0.0156 6.4829 0.0571 0.1906 0.1174 --

NA = Data not collected or recorded
Volatile Organic Compounds (VOCs parts per million)
Return to top

 

2019 Air PCB Data
(Corrective Action Level = 0.100 micrograms per cubic meter)

April Upland PCB Data |

  Monitoring Station ID (see figure)  
Date Action Level Check UP-AIR1 UP-AIR2 UP-AIR3 UP-AIR4 UP-AIR5 SLF-AIR1 SLF-AIR2 SLF-AIR-PA SA-AIR1 Notes
May 1 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000750 0.001300 Below Detectable Levels Below Detectable Levels --
May 2 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000110 0.000090 Below Detectable Levels Below Detectable Levels --
May 3 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000580 0.000330 Below Detectable Levels Below Detectable Levels --
May 4 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000120 0.001000 Below Detectable Levels Below Detectable Levels --
May 7 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000310 0.001500 Below Detectable Levels Below Detectable Levels --
May 8 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000510 0.003600 Below Detectable Levels Below Detectable Levels --
May 9 All Below Below Detectable Levels Below Detectable Levels 0.014000 -- Below Detectable Levels 0.000190 0.002310 Below Detectable Levels Below Detectable Levels --
May 10 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.001290 0.002360 Below Detectable Levels Below Detectable Levels --
May 11 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000360 0.000540 Below Detectable Levels Below Detectable Levels --
May 14 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000520 0.000240 Below Detectable Levels Below Detectable Levels --
May 15 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.002030 0.001430 Below Detectable Levels Below Detectable Levels --
May 16 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.001400 0.002220 Below Detectable Levels Below Detectable Levels --
May 17 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels -- Below Detectable Levels 0.000360 0.001810 Below Detectable Levels Below Detectable Levels --

NA = Data not collected or recorded
Total PCBs (micrograms per cubic meter)
Return to top

 

 

Water Monitoring - 2019 River Remediation

Program includes turbidity monitoring using real-time meters for solids and PCB analytical testing at water column and water intake locations. Corrective action levels have been established based on levels that are safe for the community for both turbidity 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 (click to enlarge)

Site Map
 

2019 Water Column Total Suspended Solids Data
(Corrective Action Level = 100 mg/L above WC-UP Level)

April Water Column TSS Data |

  Monitoring Station ID (see figure)  
Date Action Level Check WC-UP WC-NF WC-MOUTH WC-SLR Notes
May 1 All Below Below Detectable Levels 5.22 7.46 5.67 --
May 2 All Below Below Detectable Levels 11.9 (12.2) 4.03 6.27 --
May 3 All Below 2.99 10.9 (2.54) 3.58 4.93 --
May 4 All Below 2.54 2.69 (2.69) 3.73 3.58 --
May 6 All Below 2.99 7.01 (13.7) 3.88 2.84 --
May 7 All Below 1.79 3.88 (6.27) 5.07 2.99 --
May 8 All Below 2.09 7.01 (7.91) 2.69 4.33 --
May 9 All Below 2.09 6.87 (13.3) 10.3 4.03 --
May 10 All Below 2.09 9.25 (6.72) 4.78 3.58 --
May 11 All Below 11.2 6.57 (10.7) 8.66 3.73 --
May 13 All Below 7.76 6.12 (67.61) 20.3 4.63 --
May 14 All Below 4.63 9.25 6.57 5.37 --
May 15 All Below 5.07 12.8 6.27 5.52 --
May 16 All Below 4.48 8.36 5.07 6.12 --
May 17 All Below 2.99 4.48 5.07 5.52 --

Total TSS (micrograms per liter)
TSS values in parentheses represent an additional NF station sampled closer to the upstream work platform.
Return to top


2019 Water Column PCB Data
(Corrective Action Level = 0.5 micrograms per liter)

April Water Column PCB Data |

  Monitoring Station ID (see figure)  
Date Action Level Check WC-NF WC-MOUTH WC-SLR Notes
May 1 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels --
May 2 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 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 8 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels --
May 9 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 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 16 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 20 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels --

Total PCBs (micrograms per liter)
Return to top

Water Intake Monitoring Locations (click to enlarge)

Site Map
 

2019 Water Intake Turbidity Data
(Corrective Action Level = 25 NTU above Baseline Level)

April Intake Turbidity Data |

  Monitoring Station ID (see figure)  
Date Action Level Check IN-AE-RAW IN-SRMT-RAW IN-SRMT-FIL Notes
May 1 All Below 0.9 1.4 0.1 --
May 2 All Below 0.1 2.2 0.1 --
May 3 All Below 0.2 1.6 0.1 --
May 4 All Below 1.3 0.9 0.2 --
May 6 All Below 0.5 2.0 0.2 --
May 7 All Below 0.5 1.9 0.2 --
May 8 All Below 0.3 1.2 0.2 --
May 9 All Below 0.4 0.8 0.1 --
May 10 All Below 1.1 1.7 0.5 --
May 11 All Below 0.4 1.3 0.4 --
May 13 All Below 0.6 2.0 0.3 --
May 14 All Below 0.4 1.4 0.4 --
May 15 All Below 1.5 1.3 0.4 --
May 16 All Below 0.5 1.1 0.4 --
May 17 All Below 0.5 0.6 0.5 --
May 18 All Below 0.5 0.9 0.3 --
May 20 All Below 0.6 1.2 0.4 --
May 21 All Below 0.5 1.4 0.7 --

NA = Data not collected or recorded
Turbidity (nephelometric turbidity unit; NTU)
Return to top


2019 Water Intake PCB Data
(Corrective Action Level = 0.5 micrograms per liter)

April Intake PCB Data |

  Monitoring Station ID (see figure)  
Date Action Level Check IN-AE-RAW IN-SRMT-RAW IN-SRMT-FIL Notes
May 1 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels --
May 2 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 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 8 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels --
May 9 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 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 16 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 20 All Below Below Detectable Levels Below Detectable Levels Below Detectable Levels --

Total PCBs (micrograms per liter)
Return to top