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Home My WebLink AboutDDW-2024-006205Rio Tinto Kennecott 4700 Daybreak Parkway South Jordan, Utah 84009 T (801) 304-1256 M (385) 246-7937 E-mail trevor.paulson@riotinto.com Trevor Paulson Advisor – Water Quality April 3, 2023 DDWreports@utah.gov Utah Division of Drinking Water Via e-mail Subject: First Quarter 2023 Point of Use Treatment Report Kennecott Section 21 Public Water System 18003, (File #06826) In accordance with Kennecott Utah Copper’s Operation Permit (File #06826) issued on January 10, 2006, enclosed is the First Quarter 2023 Point of Use Treatment and Monitoring Report of arsenic for the Section 21 Public Water System 18003. Six Reverse Osmosis (RO) treatment units were sampled and analyzed for arsenic during this reporting period. Sincerely, Trevor Paulson Advisor – Water Quality Attachments (7) Operation - RO Filter Sample Date Results ug/L mho/cm Days January-23 February-23 March-23 Central Lab CL1 02/23/23 < 5 9 413 19 19 18 Administration Upstairs RF2 02/23/23 < 5 172 189 200 163 164 Precious Metals Lunch Room RF6 260 310 311 2nd Floor West Admin Break room SM1 02/23/23 < 5 338 343 400 425 315 2nd Floor Admin 264 SM2 02/23/23 < 5 66 287 357 199 102 Hot Metals - Reliability Shop SM5 02/23/23 < 5 251 679 229 230 245 EDX Building Lunchroom SM11 220 236 235 Hot Metals - Materials Handling SM17 259 450 230 Anodes Office - Trailer SM18 230 241 223 Smelter Women's Change Room SM20 233 232 220 Smelter Men's Change Room SM21 233 195 216 Materials Handling Shop SM36 260 262 305 Filter Plant Lunchroom SM39 357 345 343 Records Building SM41 out of service 216 218 Garage SM42 250 209 226 Contractors Lunchroom SM43 308 316 360 MEIT Shop SM44 02/23/23 < 5 273 163 260 344 245 Section 21 White TP2 360 361 360 Engineering East SM46 147 121 126 Engineering West SM47 142 157 144 Hot Metals Bldg 3rd Fl Sou End SM52 251 233 236 Admin Northwest SM51 184 300 304 Admin North East SM50 190 176 186 3rd Floor So End Hot Metal ice machine SM53 170 168 171 Machine Location & Description Arsenic and Conductivity Conductivity Results (mho/cm)/Maintenance Conducted Kennecott Section 21 System 18003 First Quarter 2023 POU Arsenic Report RTKC ID Kennecott Environmental Laboratory Certificate of Analysis ---March 20, 2023 Well Designation: Collection Date: Submission Date: 02/23/2023 02/24/2023 Page 1 of 6 9180 W 2500 S Magna, UT 84044 Phone (801) 569-7952 CL1 T GA03838KEL Sample ID Numbers: Total Dissolved Metals Metals CRDL Result Unit Method Analyte Result *Micro mho/cm 1* Conductivity (Field) 9050 9 ug/L 5Arsenic 200.8 Below CRDL * =Included for information purposes only, not performed by KEL. NA = Not Analyzed The Contract Required Detection Limits (CRDL) are minimum reporting limits required by the Ground Water Characterization and Monitoring Plan (GCMP) Kennecott Environmental Laboratory Certificate of Analysis ---March 20, 2023 Well Designation: Collection Date: Submission Date: 02/23/2023 02/24/2023 Page 2 of 6 9180 W 2500 S Magna, UT 84044 Phone (801) 569-7952 RF2 T GA03839KEL Sample ID Numbers: Total Dissolved Metals Metals CRDL Result Unit Method Analyte Result *Micro mho/cm 1* Conductivity (Field) 9050 172 ug/L 5Arsenic 200.8 Below CRDL * =Included for information purposes only, not performed by KEL. NA = Not Analyzed The Contract Required Detection Limits (CRDL) are minimum reporting limits required by the Ground Water Characterization and Monitoring Plan (GCMP) Kennecott Environmental Laboratory Certificate of Analysis ---March 20, 2023 Well Designation: Collection Date: Submission Date: 02/23/2023 02/24/2023 Page 3 of 6 9180 W 2500 S Magna, UT 84044 Phone (801) 569-7952 SM1 T GA03840KEL Sample ID Numbers: Total Dissolved Metals Metals CRDL Result Unit Method Analyte Result *Micro mho/cm 1* Conductivity (Field) 9050 338 ug/L 5Arsenic 200.8 Below CRDL * =Included for information purposes only, not performed by KEL. NA = Not Analyzed The Contract Required Detection Limits (CRDL) are minimum reporting limits required by the Ground Water Characterization and Monitoring Plan (GCMP) Kennecott Environmental Laboratory Certificate of Analysis ---March 20, 2023 Well Designation: Collection Date: Submission Date: 02/23/2023 02/24/2023 Page 4 of 6 9180 W 2500 S Magna, UT 84044 Phone (801) 569-7952 SM2 T GA03841KEL Sample ID Numbers: Total Dissolved Metals Metals CRDL Result Unit Method Analyte Result *Micro mho/cm 1* Conductivity (Field) 9050 66 ug/L 5Arsenic 200.8 Below CRDL * =Included for information purposes only, not performed by KEL. NA = Not Analyzed The Contract Required Detection Limits (CRDL) are minimum reporting limits required by the Ground Water Characterization and Monitoring Plan (GCMP) Kennecott Environmental Laboratory Certificate of Analysis ---March 20, 2023 Well Designation: Collection Date: Submission Date: 02/23/2023 02/24/2023 Page 6 of 6 9180 W 2500 S Magna, UT 84044 Phone (801) 569-7952 SM5 T GA03842KEL Sample ID Numbers: Total Dissolved Metals Metals CRDL Result Unit Method Analyte Result *Micro mho/cm 1* Conductivity (Field) 9050 251 ug/L 5Arsenic 200.8 Below CRDL * =Included for information purposes only, not performed by KEL. NA = Not Analyzed The Contract Required Detection Limits (CRDL) are minimum reporting limits required by the Ground Water Characterization and Monitoring Plan (GCMP) Kennecott Environmental Laboratory Certificate of Analysis ---March 20, 2023 Well Designation: Collection Date: Submission Date: 02/23/2023 02/24/2023 Page 5 of 6 9180 W 2500 S Magna, UT 84044 Phone (801) 569-7952 SM44 T GA03843KEL Sample ID Numbers: Total Dissolved Metals Metals CRDL Result Unit Method Analyte Result *Micro mho/cm 1* Conductivity (Field) 9050 273 ug/L 5Arsenic 200.8 Below CRDL * =Included for information purposes only, not performed by KEL. NA = Not Analyzed The Contract Required Detection Limits (CRDL) are minimum reporting limits required by the Ground Water Characterization and Monitoring Plan (GCMP)