Table 2. Matrix spike samples.
Standard
Spike
Sample
Name
Concentration
vol.
wt. or vol.
Target
Matrix
(ID)*
(mg TPH/mL)
(mL)
(g or mL)
concentration
Gasoline range organics (GRO; b.p. 60170C)
5.0 0.2 g
Soil
AK-101.0-GCS
5.0
0.100
100 mg TPH/kg
5.0 0.2 g
Soil
AK-101.0-GCS
5.0
0.500
500 mg TPH/kg
Water
AK-101.0-GCS
5.0
0.100
1050 mL
0.48 mg TPH/L
Water
AK-101.0-GCS
5.0
5.00
1050 mL
24 mg TPH/L
Diesel range organics (DRO; b.p. 160400C)
5.0 0.2 g
Soil
AK-102.0-DCS
5.0
0.250
250 mg TPH/kg
5.0 0.2 g
Soil
AK-102.0-DCS
5.0
1.00
1000 mg TPH/kg
20.0 0.2 g
Soil
AK-102.0-DCS
5.0
1.00
250 mg TPH/kg
20.0 0.2 g
Soil
AK-102.0-DCS
5.0
4.00
1000 mg TPH/kg
Water
AK-102.0-DCS
5.0
0.200
1050 mL
0.95 mg TPH/L
Water
AK-102.0-DCS
5.0
5
1050 mL
24 mg TPH/L
Residual range organics (RRO; b.p. 315540C)
5.0 0.2 g
Soil
MO-Comp-D-40x
5.0
1.00
1000 mg TPH/kg
20.0 0.2 g
Soil
MO-Comp-D-40x
5.0
4.00
1000 mg TPH/kg
*Manufacturer's (AccuStandard, Inc., New Haven, Connecticut) sample identification code.
For GRO compounds in soil, the test plan specified
designed tool containing two knife blades (Geoprobe).
Samples of 5.0 0.2 g, which were both composited
that 20 samples be distributed for analysis (Table 1).
Discrete soil samples were taken from the plastic core
and co-located, were obtained for on-site and off-site
barrel liners immediately after they were opened, which
analysis by using a modified (tip and plunger removed)
was within a couple of minutes of their arrival at the
5-mL plastic syringe (Hewitt et al. 1995). These samples
trailer. The bulk sample was exposed for subsampling
were composited by pushing the syringe into the freshly
by removing the end caps and approximately one-third
exposed surface twice, at predetermined depth inter-
of vertical wall of the plastic liner using a specially
vals, and acquiring approximately 2.5 g of soil (about
Table 3. Performance evaluation samples.
Standard
Spike
Sample
Target conc. or
Name
Concentration
vol.
wt. or vol.
certified conc.
Matrix
(ID)
(mg TPH/mL)
(mL)
(g or mL)
(and perf. acc.)†
Gasoline range organics (GRO; b.p. 60170C)
5.00 0.02 g
Soil
AK-101.0-GCS*
5.0
0.200
200 mg TPH/kg
Water
Cat. No. 762**
1.03
1.00
1000 mL
1.03 mg TPH/L
Lot. No. 50017
(0.689 to 1.57)
Diesel range organics (DRO; b.p. 160400C)
Soil
Cat. No. 765**
--
--
20 g
401 mg TPH/kg
Lot. No. 40018
(194 to 509)
Soil
Cat. No. 765**
--
--
20 g
2480 mg TPH/kg
Lot. No. 40016
(1200 to 3160)
*AccuStandard Inc., New Haven, Connecticut.
†Performance acceptance limits.
**Certified Standards purchased from Environmental Resources Associates, Arvada, Colorado.
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