Cat. 1 1_                                                    Foundry Sand
Compound      lStandardL  1       2        3         4          5         6          7          8          9         10         11       12
Indeno(123-cd)pyrene           56      69       ND      *D<170      *1<40    *1<100     *1<220      *1<130    *D<350    *D<320     *D<320    *1<50
Indeno(123-cd)pyrene  88     57       70       *E        *E        *E        *E          *E         *E         *E        *E         *E       *E
2-methyl naphthalene  8,800  220     820       4.1      1400       490       550       8700        2300       3500      5800       9800      610
2-methyl naphthalene         220     830       4.1      1400       490       560        8800       2300       3600      5900       9900      610
Naphthalene              530     1200      20       1200       510       900        4100        1900      2300       4000      4600      710
Naphthalene     600,000  540     1200      20       1200       510       910        4100        1900      2400       4100      4600      720
Phenanthrene              160     450       78       920        160       110        900         740       900        720       880       170
Phenanthrene      880     160     460       78       920        160       110        910         740       930        730       890       170
Pyrene                  51      50       ND       *1<270     *1<50    *1<30      *1<240      *1<180     *1<200    *1<180     *1<230   *1<60
Pyrene       500,000    51      51       *E        *E        *E         *E         *E          *E        *E        *E         *E       *E

Note: ND = Not detected, E = the dry weight concentration for the compound could not be determined, I = due to the
interferences, the report limit of the compound interest is elevated to the level that is identified, LML MD = the
laboratory matrix spike exceeds the lower quality control limit for the compound (LML) and the compound is not
detected (ND), LML D = the laboratory matrix spike exceeds the lower quality control limit for the compound (LML),
but the compound is detected.