C - Hanford Site

WHC-SD-EN-TI-136, Rev. 0
4.*2 EPA 8015M4 - EXTRACTABLE HYDROCARBON:
All samples were extracted and analyzed within
method holding time.
All QC results were acceptable.
Samples B06D36 and B06D37 contained a hydrocarbon
mixture that has the chromatographic pattern of a
combination of kerosene and diesel products. Each
section of the chromatogramn was quantitated against
the appropriate standard separately.
Because of overlapping of late eluting gasoline
compounds the MS and MSD were calculated by taking
the sum of the area counts of five individual
compounds and comparing this area to the sum of the
area counts of the same peaks from the continuing
calibration.
4.3 EPA 8015M4 - PURGEABLE HYDROCARBONS:
All samples were analyzed within method holding
time. All QC results were acceptable.
Due to the high concentration of Kerosene range
hydrocarbons in the samples, one gram was extracted
with 10 mL of Methanol and 50 uL of Methanol purged.
This resulted in a dilution factor of 1000:1. No
gasoline range compounds were found in the samples.
A Methanol Blank has been included in the package.
4.4 EPA 8020 - STEX:
All samples were analyzed within method holding
time.
All QC results were acceptable.
Due to the high concentration of background
hydrocarbons the samples were extracted with
Methanol (1:10) and 50 uL of Methanol purged. This
resulted in a dilution factor of 1000:1. Results of
a Methanol Blank have been included in the package.
All Toluene hits were confirmed by GCMS.
D-248