04_AECOM_Environmental Report_Final

Airgas Specialty Gases Ai I as. Airgas USA LLC ,. 6141 Fastin Road an Air Liquide company Phimsteadville, PA 18949 Airgas.com CERTIFICATE OF ANALYSIS Grade of Product: EPA PROTOCOL STANDARD Part Number: E03NI80E15A0138 Reference Number: 160-402489410-1 Cylinder Number: CC83749 Cylinder Volume: 141.0 CF Laboratory: 124 - Plumsteadville - PA Cylinder Pressure: 2015 PSIG PGVP Number: A12022 Valve Outlet: 590 Gas Code: CO2,02,BALN Certification Date: Jul 18, 2022 Expiration Date: Jul 18, 2030 Certification perfumed in accordance with "EPA Traceability Protocol for Assay and Certification of Gaseous Calibration Standards (May 2912y dacument EPA GOO/R-12/531, using the assay procedures listed. Analytical Methodology does not require correction for analytical interference. This cylinder has a total analytical uncertainty as stated below with a confidence level of 95%. Thare are na significant impurities whieh affect the use of this calibration mixture. all concentrations are on a muleimole basis unless otherwise noted. The results relate only tu the items tested. The repurt shall net be reproduced except in full without approval af the laberatory. Da Not Use This Cylinder below 100 psig, i.2. 0.7 megapascals. ANALYTICAL RESULTS Component Requested Actual Protocol Total Relative Assay Concentration Concentration Method Uncertainty Dates CARBON DIOXIDE 10.00 % 9.931% Gt +/- 1.4% NIST Traceable 07/18/2022 OXYGEN 10.00 % 9.975 % Gt +/- 0.6% NIST Traceable 07/18/2022 NITROGEN Balance CALIBRATION STANDARDS Lot ID Cylinder No Concentration Uncertainty Expiration Date 06010615 ka086a5 7.016 % CARBON DIOXIDE/NITROGEN th 05% Nov 19, 2027 09060233 €C283101 9.961 % OXYGENINITROGEN + 0.3% Nov 05, 2024 ANALYTICAL EQUIPMENT Instrument/Make/Model Analytical Principle Last Multipoint Calibration | HORIBA VA5011 TSV6VU9P NDIR COZ NDIR Jul 07, 2022 | SIEMENS OXYMAT 6 - N1-W5-951 - 02 PARAMAGNETIC Jul 07, 2022 Triad Data Available Upon Request Signature on file Approved for Release Page 1 of 1