Appendix IX Mix #2

Daily Quality Control Standard (with 4 Deuterated Compounds Internal Standard) 14 Analytes + 4 ISTD, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene 9 n-Heptane 17m-Xylene 3 n-Octane 17

EPA Method 524 & 624 - Internal Standard

Formaldehyde-2,4-DNPH, 1000µg/ml in AL, 5ml