Page 1 of 6 LABORATORY DATA REVIEW CHECKLIST CS Report Name: 2012 Confirmation Sampling, Well Installation, and Groundwater Sampling, 4501 Lake Otis Parkway, Anchorage, Alaska Date: July 2012 Laboratory Report Date: 7/11/2012 Consultant Firm: Shannon & Wilson, Inc. Completed by: Jake Gano Title: Environmental Engineer Laboratory Name: SGS Environmental Services, Inc. Work Order Number: 1121984 ADEC File Number: 2100.38.511 (NOTE: NA = not applicable; Text in italics added by Shannon & Wilson, Inc.) 1. Laboratory a. Did an ADEC CS approved laboratory receive and perform all of the submitted sample analyses? Yes / No Comments: b. If the samples were transferred to another "network" laboratory or sub-contracted to an alternate laboratory, was the laboratory performing the analyses ADEC CS-approved? NA / Yes / No Comments: 2. Chain of Custody (COC) a. COC information completed, signed, and dated (including released/received by)? Yes / No Comments: b. Correct analyses requested? Yes / No Comments: Changes to the COCs included analyzing samples PP10-2 and PP10-10 for PAHs; removing PAH analysis for sample PP2-4; and analyzing three samples which were submitted on “hold” for GRO/BTEX, DRO, and VOCs. 3. Laboratory Sample Receipt Documentation a. Sample/cooler temperature documented and within range at receipt (4° ± 2° C)? Yes / No Comments: Sample cooler temperature blanks were 6.5° C and 6.2° C, respectively.
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Page 1 of 6
LABORATORY DATA REVIEW CHECKLIST CS Report Name: 2012 Confirmation Sampling, Well Installation, and Groundwater Sampling, 4501 Lake Otis Parkway, Anchorage, Alaska Date: July 2012 Laboratory Report Date: 7/11/2012 Consultant Firm: Shannon & Wilson, Inc. Completed by: Jake Gano Title: Environmental Engineer Laboratory Name: SGS Environmental Services, Inc. Work Order Number: 1121984 ADEC File Number: 2100.38.511 (NOTE: NA = not applicable; Text in italics added by Shannon & Wilson, Inc.)
1. Laboratory a. Did an ADEC CS approved laboratory receive and perform all of the submitted sample
analyses? Yes / No Comments:
b. If the samples were transferred to another "network" laboratory or sub-contracted to an alternate laboratory, was the laboratory performing the analyses ADEC CS-approved? NA / Yes / No Comments:
2. Chain of Custody (COC)
a. COC information completed, signed, and dated (including released/received by)? Yes / No Comments:
b. Correct analyses requested? Yes / No Comments: Changes to the COCs included analyzing samples PP10-2 and PP10-10 for PAHs; removing PAH analysis for sample PP2-4; and analyzing three samples which were submitted on “hold” for GRO/BTEX, DRO, and VOCs.
3. Laboratory Sample Receipt Documentation
a. Sample/cooler temperature documented and within range at receipt (4° ± 2° C)?
Yes / No Comments: Sample cooler temperature blanks were 6.5° C and 6.2° C, respectively.
Work Order Number: 1121984
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 2 of 6
b. Sample preservation acceptable - acidified waters, Methanol-preserved VOC soil (GRO, BTEX, VOCs, etc.)? NA / Yes / No Comments:
c. Sample condition documented - broken, leaking (soil MeOH), zero headspace (VOC
vials)? Yes / No Comments:
d. If there were any discrepancies, were they documented (e.g., incorrect sample
containers/preservation, sample temperatures outside range, insufficient sample size, missing samples)? NA / Yes / No Comments: The lab noted that the methanol did not completely submerse the soil for Samples B9-2, B9-22, and B9-11. The septa lid jar for Sample PP8-6 had the wrong time. The laboratory used the notation on the sample lid to confirm the correct sample ID and used the time on the COC.
e. Data quality or usability affected? Explain.
Comments: Based on conversations with the lab, the soil samples where the methanol was not covering the soil sample were swirled and the soil was settled back into the jar (likely due to shifting during transport). The data usability is not affected.
4. Case Narrative
a. Present and understandable? Yes / No Comments:
b. Discrepancies, errors or QC failures noted by the lab? None Noted / Yes Comments: Surrogate recoveries were outside of QC criteria for several samples either due to matrix interference or sample dilution. LOQs for DRO were elevated for several samples. LCS recovery for chloromethane and vinyl chloride are outside QC criteria (biased high). MS/MSD RPD for vinyl chloride does not meet QC criteria (biased high). For Sample B9-22, PCE results are outside of the lab calibration range. Reanalysis was not conducted due to a lab scheduling error. CCV recovery for several analytes do not meet QC criteria (biased high).
c. Were corrective actions documented? None Noted / Yes Comments:
d. What is the effect on data quality/usability, according to the case narrative? Comments: The case narrative notes that LOQs are elevated for samples run at dilution. Also, the results for B9-22 are considered an estimate.
Work Order Number: 1121984
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 3 of 6
5. Sample Results
a. Correct analyses performed/reported as requested on COC? Yes / No Comments:
b. All applicable holding times met? Yes / No Comments:
c. All soils reported on a dry-weight basis? NA / Yes / No Comments:
d. Are the reported LOQs less than the Cleanup Level or the minimum required detection level for the project? Yes / No Comments: The detection limits (DLs) exceed the ADEC migration to groundwater cleanup level for the following analytes in the following samples:
Vinyl chloride in all of the project samples. It is noted that the VC DL is less than the interim threshold concentration.
Methylene chloride, 1,2-dibromoethane, 1,2,3-trichloropropane, and 1,1,2,2-tetrachloroethane in Samples B9-2 and STB2.
e. Data quality or usability affected? Explain.
Comments: The potential presence of these compounds at a concentration greater than the ADEC migration to groundwater cleanup level but less than the DL cannot be determined. It is noted that the limit of detection for vinyl chloride is less than the interim threshold concentration for the project samples.
6. QC Samples
a. Method Blank
i. One method blank reported per matrix, analysis, and 20 samples?
Yes / No Comments:
ii. All method blank results less than LOQ? Yes / No Comments:
iii. If above LOQ, what samples are affected? NA
Comments:
iv. Do the affected sample(s) have data flags? NA / Yes / No Comments:
If so, are the data flags clearly defined? NA / Yes / No Comments:
Work Order Number: 1121984
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 4 of 6
v. Data quality or usability affected? Explain. NA Comments:
b. Laboratory Control Sample/Duplicate (LCS/LCSD)
i. Organics - One LCS/LCSD reported per matrix, analysis, and 20 samples? (LCS/LCSD required per AK methods, LCS required per SW846) N/A / Yes / No Comments:
ii. Metals/Inorganics - One LCS and one sample duplicate reported per matrix, analysis and 20 samples? N/A / Yes / No Comments:
iii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs, if applicable. (AK petroleum methods: AK101 60%-120%, AK102 75%-125%, AK103 60%-120%; all other analyses see the laboratory QC pages) Yes / No Comments: LCS recovery for chloromethane and vinyl chloride are outside QC criteria (biased high)
iv. Precision – All relative percent differences (RPDs) reported and less than method or laboratory limits? And project specified DQOs, if applicable. RPD reported from LCS/LCSD, MS/MSD, and or sample/sample duplicate. (AK Petroleum methods 20%; all other analyses see the laboratory QC pages) Yes / No Comments:
v. If %R or RPD is outside of acceptable limits, what samples are affected? NA Comments: Lab sample numbers 3-12, and 15-20.
vi. Do the affected samples(s) have data flags? NA / Yes / No Comments: If so, are the data flags clearly defined? NA / Yes / No Comments:
vii. Data quality or usability affected? Explain. Comments: The analytes with LCS recoveries outside of QC criteria were not detected in the associated project samples. Therefore, no samples are affected.
c. Surrogates - Organics Only
i. Are surrogate recoveries reported for organic analyses, field, QC and laboratory samples? NA / Yes / No Comments:
Work Order Number: 1121984
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 5 of 6
ii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs if applicable. (AK Petroleum methods 50-150 %R; all other analyses see the laboratory report pages) NA / Yes / No Comments: Recovery was outside of QC criteria for GRO by AK101 for Samples PP7-5, PP8-6, PP9-3, PP8-7, PP10-2, PP10-5, PP2-3, PP2-4, PP2-6, PP3-6, PP5-6, AND PP6-4. Surrogate recovery for PAHs by EPA 8270D SIMS in Samples PP7-5 and PP10-2, and VOCs by EPA 8260B in Sample PP10-5 were also outside of controls.
iii. Do the sample results with failed surrogate recoveries have data flags? NA Yes / No Comments: Failed surrogates are flagged but the associated samples are not flagged in the laboratory report. The data are flagged in our report tables. If so, are the data flags clearly defined? NA / Yes / No Comments:
iv. Data quality or usability affected? Explain. Comments: The surrogate recoveries were outside of controls due to either matrix interference or sample dilution. The associated samples are flagged in the project tables.
d. Trip Blank - Volatile analyses only (GRO, BTEX, VOCs, etc.) [soil and water]
i. One trip blank reported per matrix, analysis and cooler? NA / Yes / No
Comments:
ii. Is the cooler used to transport the trip blank and volatile samples clearly indicated on the COC? NA / Yes / No (if no explain): One trip blank was submitted with each cooler
iii. All results less than LOQ? NA / Yes / No Comments: Although less than the LOQ, GRO were detected in STB1 (0.930J mg/kg) and STB2 (1.07J mg/kg).
iv. If above LOQ, what samples are affected? Comments:). Sample PP6-1 had a GRO detection within five times of the associated trip blank (STB1), and Samples B9-2 and B9-22 each had GRO detections within a factor of five of the associated trip blank (STB2). The remaining GRO results are either non-detect, or greater than five times the detected concentrations.
v. Data quality or usability affected? Explain. Comments: The GRO data are flagged as less than the detected concentrations for the three samples in our project tables. It is noted that these concentrations are less than the most stringent ADEC cleanup levels, and therefore the DQO failure does not affect the regulatory status of these samples. The remaining results are unaffected.
Work Order Number: 1121984
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 6 of 6
e. Field Duplicate
i. One field duplicate submitted per matrix, analysis and 10 project samples? Yes / No Comments: Sample B9-22 is a duplicate of Sample B9-2, and Sample PP10-10 is a duplicate of Sample PP10-2.
ii. Were the field duplicates submitted blind to the lab? NA / Yes / No Comments:
iii. Precision – All relative percent differences (RPDs) less than specified DQOs? (Recommended: 30% for water, 50% for soil) NA / Yes / No Comments: RPDs exceed the DQO for PCE in Samples B9-2/B9-22 (68 percent) and cis-1,2-DCE, fluoranthene, and pyrene in Samples PP10-2/PP10-10 (up to 80 percent). For the other analytes which were detected in both samples, DQOs ranged from 0.6 percent to 24 percent.
iv. Data quality or usability affected? Explain. Comments: The PCE result for Sample B9-22 are within 3 times of each other and both contain significant concentrations of PCE. The cis-1,2-DCE failure in PP10-2/PP10-10 are likely due to the non-homogenous distribution of contaminants in the sample. Both results are considered useable for the purposes of this project.
f. Decontamination or Equipment Blank (if not applicable, a comment stating why must
be entered below) No decontamination or equipment blank used per the ADEC-approved work plan.
i. All results less than LOQ? NA / Yes / No Comments:
ii. If results are above LOQ, what samples are affected? NA Comments:
iii. Data quality or usability affected? Explain. NA Comments:
7. Other Data Flags/Qualifiers (ACOE, AFCEE, Lab-specific, etc.)
a. Are they defined and appropriate? NA / Yes / No Comments: Lab-specific qualifiers are defined on page 6 of the lab report.
Refer to the sample receipt form for information on sample condition.
*
There were no analytical anomalies associated with the data reported herein.
* QC comments may be associated with the field samples found in this report. When applicable, comments will be applied to
associated field samples.
SG S N o rth A m eric a Inc . En vir onm enta l D ivis ion 200 W e st Pot ter D rive A nc hora ge A K 99518 t(907 )562.2343 f( 907)561 .5301 w w w .us.sgs .com M em ber of SG S Group
This data package is in compliance with the terms and conditions of the contract, both
technically and for completeness, unless otherwise noted on the sample data sheet(s) and/or
case narrative. This certification applies only to the tested parameters and the specific
sample(s) received at the laboratory. If you have any questions regarding this report, or if we
can be of further assistance, please contact your SGS Project Manager.
1122167
Shannon & Wilson, Inc.
Workorder No.:
Client:
Project:
Laboratory Analytical Report
Contents (Bookmarked in PDF):
Cover Page
Glossary
Sample Summary Forms
Case Narrative
Sample Results Forms
Batch Summary Forms (by method)
Quality Control Summary Forms (by method)
Chain of Custody/Sample Receipt Forms
Attachments (if applicable)
SGS No rth Americ a Inc . En vir onmenta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com Member of SG S Group
Page 3 of 24
Enclosed are the analytical results associated with the above work order. All results are intended to be used in their entirety and SGS is not
responsible for use of less than the complete report. If you have any questions regarding this report, or if we can be of any other assistance, please
contact your SGS Project Manager at 907-562-2343. All work is provided under SGS general terms and conditions
(<http://www.sgs.com/terms_and_conditions.htm>), unless other written agreements have been accepted by both parties.
SGS maintains a formal Quality Assurance/Quality Control (QA/QC) program. A copy of our Quality Assurance Plan (QAP), which outlines this program, is
available at your request. The laboratory certification numbers are AK00971 (DW Chemistry & Microbiology) & UST-005 (CS) for ADEC and 2944.01 for DOD
8270D-SIM, 9040B, 9045C, 9056A, 9060A, AK101 and AK102/103). Except as specifically noted, all statements and data in this report are in conformance to the
provisions set forth by the SGS QAP and, when applicable, other regulatory authorities. The following descriptors or qualifiers may be found in your report:
* The analyte has exceeded allowable regulatory or control limits.
! Surrogate out of control limits.
B Indicates the analyte is found in a blank associated with the sample.
CCV Continuing Calibration Verification
CL Control Limit
D The analyte concentration is the result of a dilution.
DF Dilution Factor
DL Detection Limit (i.e., maximum method detection limit)
E The analyte result is above the calibrated range.
F Indicates value that is greater than or equal to the DL
GT Greater Than
ICV Initial Calibration Verification
J The quantitation is an estimation.
JL The analyte was positively identified, but the quantitation is a low estimation.
LCS(D) Laboratory Control Spike (Duplicate)
LOD Limit of Detection (i.e., 2xDL)
LOQ Limit of Quantitation (i.e., reporting or practical quantitation limit)
LT Less Than
M A matrix effect was present.
MB Method Blank
MS(D) Matrix Spike (Duplicate)
ND Indicates the analyte is not detected.
Q QC parameter out of acceptance range.
R Rejected
RL Reporting Limit
RPD Relative Percent Difference
U Indicates the analyte was analyzed for but not detected.
Note: Sample summaries which include a result for "Total Solids" have already been adjusted for moisture content.
All DRO/RRO analyses are integrated per SOP.
Print Date: 6/28/2012
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 6 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 7 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 8 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 9 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 10 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 11 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 12 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 13 of 24
Shannon & Wilson, Inc. Print Date: 6/28/2012 2:42 pm
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
Page 14 of 24
Matrix
SGS Ref.#
Client Name
Project Name/#
Printed Date/Time 06/28/2012 14:42Batch
Method
Date
Prep
1092402 Method Blank
Shannon & Wilson, Inc.
32-1-17172-013 4501 Lake Otis
Water (Surface, Eff., Ground)
VXX23592
SW5030B
06/12/2012
QC results affect the following production samples:
1122167001, 1122167002, 1122167003
Parameter Results LOQ/CL UnitsAnalysis
DateDL
Volatile Gas Chromatography/Mass Spectroscopy
cis-1,2-Dichloroethene 0.620 U 1.00 ug/L 06/12/120.310
LABORATORY DATA REVIEW CHECKLIST CS Report Name: 2012 Progress Sampling and Monitoring Well Installation, 4501 Lake Otis Parkway, Anchorage, Alaska Date: October 2012 Laboratory Report Date: 7/25/2012 Consultant Firm: Shannon & Wilson, Inc. Completed by: Jessica Busey Title: Environmental Scientist Laboratory Name: SGS Environmental Services, Inc. Work Order Number:
1122167
ADEC File Number: 2100.38.511 (NOTE: NA = not applicable; Text in italics added by Shannon & Wilson, Inc.)
1. Laboratory a. Did an ADEC CS approved laboratory receive and perform all of the submitted sample
analyses? Yes / No Comments:
b. If the samples were transferred to another "network" laboratory or sub-contracted to an alternate laboratory, was the laboratory performing the analyses ADEC CS-approved? NA / Yes / No Comments:
2. Chain of Custody (COC)
a. COC information completed, signed, and dated (including released/received by)? Yes / No Comments:
b. Correct analyses requested? Yes / No Comments:
3. Laboratory Sample Receipt Documentation
a. Sample/cooler temperature documented and within range at receipt (4° ± 2° C)?
Yes / No Comments: Sample cooler temperature blanks were 6.9° C.
Work Order Number: 1122167
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 2 of 5
b. Sample preservation acceptable - acidified waters, Methanol-preserved VOC soil (GRO, BTEX, VOCs, etc.)? NA / Yes / No Comments:
c. Sample condition documented - broken, leaking (soil MeOH), zero headspace (VOC
vials)? Yes / No Comments: No undesireable sample conditions noted.
d. If there were any discrepancies, were they documented (e.g., incorrect sample
containers/preservation, sample temperatures outside range, insufficient sample size, missing samples)? NA / Yes / No Comments:
e. Data quality or usability affected? Explain.
Comments: No, the samples were collected within 4 hours of submittal to the laboratory.
4. Case Narrative
a. Present and understandable? Yes / No Comments:
b. Discrepancies, errors or QC failures noted by the lab? None Noted / Yes Comments:
c. Were corrective actions documented? None Noted / Yes Comments: No corrective actions warranted because no discrepancies were noted.
d. What is the effect on data quality/usability, according to the case narrative? Comments: The case narrative does not comment on data quality/usability.
5. Sample Results
a. Correct analyses performed/reported as requested on COC? Yes / No
Comments:
b. All applicable holding times met? Yes / No Comments:
c. All soils reported on a dry-weight basis? NA / Yes / No Comments: No soil samples submitted for this work order.
d. Are the reported LOQs less than the Cleanup Level or the minimum required detection level for the project? Yes / No Comments:
Work Order Number: 1122167
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 3 of 5
e. Data quality or usability affected? Explain. Comments: No.
6. QC Samples
a. Method Blank
i. One method blank reported per matrix, analysis, and 20 samples?
Yes / No Comments:
ii. All method blank results less than LOQ? Yes / No Comments:
iii. If above LOQ, what samples are affected? NA
Comments:
iv. Do the affected sample(s) have data flags? NA / Yes / No Comments:
If so, are the data flags clearly defined? NA / Yes / No Comments:
v. Data quality or usability affected? Explain. NA Comments:
b. Laboratory Control Sample/Duplicate (LCS/LCSD)
i. Organics - One LCS/LCSD reported per matrix, analysis, and 20 samples? (LCS/LCSD required per AK methods, LCS required per SW846) N/A / Yes / No Comments:
ii. Metals/Inorganics - One LCS and one sample duplicate reported per matrix, analysis and 20 samples? N/A / Yes / No Comments: No metals/inorganics submitted
iii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs, if applicable. (AK petroleum methods: AK101 60%-120%, AK102 75%-125%, AK103 60%-120%; all other analyses see the laboratory QC pages) Yes / No Comments:
Work Order Number: 1122167
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 4 of 5
iv. Precision – All relative percent differences (RPDs) reported and less than method or laboratory limits? And project specified DQOs, if applicable. RPD reported from LCS/LCSD, MS/MSD, and or sample/sample duplicate. (AK Petroleum methods 20%; all other analyses see the laboratory QC pages) Yes / No Comments:
v. If %R or RPD is outside of acceptable limits, what samples are affected? NA Comments:
vi. Do the affected samples(s) have data flags? NA / Yes / No Comments: If so, are the data flags clearly defined? NA / Yes / No Comments:
vii. Data quality or usability affected? Explain. Comments: No.
c. Surrogates - Organics Only
i. Are surrogate recoveries reported for organic analyses, field, QC and laboratory samples? NA / Yes / No Comments:
ii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs if applicable. (AK Petroleum methods 50-150 %R; all other analyses see the laboratory report pages) NA / Yes / No Comments:
iii. Do the sample results with failed surrogate recoveries have data flags? NA Yes / No Comments: If so, are the data flags clearly defined? NA / Yes / No Comments:
iv. Data quality or usability affected? Explain. Comments: No.
d. Trip Blank - Volatile analyses only (GRO, BTEX, VOCs, etc.) [soil and water]
i. One trip blank reported per matrix, analysis and cooler? NA / Yes / No
Comments:
ii. Is the cooler used to transport the trip blank and volatile samples clearly indicated on the COC? NA / Yes / No (if no explain): Only one cooler submitted.
Work Order Number: 1122167
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 5 of 5
iii. All results less than LOQ? NA / Yes / No Comments:
iv. If above LOQ, what samples are affected? Comments: No results above LOQ
v. Data quality or usability affected? Explain. Comments: No.
e. Field Duplicate
i. One field duplicate submitted per matrix, analysis and 10 project samples? Yes / No Comments: Duplicate samples were not submitted as part of this work order, however, duplicate samples were analyzed for this project under separate work orders.
ii. Were the field duplicates submitted blind to the lab? NA / Yes / No Comments:
iii. Precision – All relative percent differences (RPDs) less than specified DQOs? (Recommended: 30% for water, 50% for soil) NA / Yes / No Comments:
iv. Data quality or usability affected? Explain. Comments: No.
f. Decontamination or Equipment Blank (if not applicable, a comment stating why must
be entered below) No decontamination or equipment blank used per the ADEC-approved work plan.
i. All results less than LOQ? NA / Yes / No Comments:
ii. If results are above LOQ, what samples are affected? NA Comments:
iii. Data quality or usability affected? Explain. NA Comments:
7. Other Data Flags/Qualifiers (ACOE, AFCEE, Lab-specific, etc.)
a. Are they defined and appropriate? NA / Yes / No Comments: Lab-specific qualifiers are defined on page 4 of the lab report.
SGS North America Environmental Services – Alaska DivisionProject Manager
Steven Crupi 2012.07.03 15:34:08 -08'00'
Case NarrativeSHANNOT Shannon & Wilson, Inc.1122334 17172-013 4501 Lake Otis
Customer:Project:
SGS North America Inc.
Refer to the sample receipt form for information on sample condition.
1095608 IB XFC/10430AK102/103 - 5a-Androstane and n-triacontane (surrogates) recoveries are outside QC criteria (biased low). All associated QC and samples have passing recoveries for these surrogates.
* QC comments may be associated with the field samples found in this report. When applicable, comments will be applied to the associated field samples.
This data package is in compliance with the terms and conditions of the contract, both
technically and for completeness, unless otherwise noted on the sample data sheet(s) and/or
case narrative. This certification applies only to the tested parameters and the specific
sample(s) received at the laboratory. If you have any questions regarding this report, or if we
can be of further assistance, please contact your SGS Project Manager.
1122334
Shannon & Wilson, Inc.
Workorder No.:
Client:
Project:
Laboratory Analytical Report
Contents (Bookmarked in PDF):
Cover Page
Glossary
Sample Summary Forms
Case Narrative
Sample Results Forms
Batch Summary Forms (by method)
Quality Control Summary Forms (by method)
Chain of Custody/Sample Receipt Forms
Attachments (if applicable)
SGS No rth Americ a Inc . En vir onmenta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com Member of SG S Group
3 of 57
Enclosed are the analytical results associated with the above work order. All results are intended to be used in their entirety and SGS is not
responsible for use of less than the complete report. If you have any questions regarding this report, or if we can be of any other assistance, please
contact your SGS Project Manager at 907-562-2343. All work is provided under SGS general terms and conditions
(<http://www.sgs.com/terms_and_conditions.htm>), unless other written agreements have been accepted by both parties.
SGS maintains a formal Quality Assurance/Quality Control (QA/QC) program. A copy of our Quality Assurance Plan (QAP), which outlines this program, is
available at your request. The laboratory certification numbers are AK00971 (DW Chemistry & Microbiology) & UST-005 (CS) for ADEC and 2944.01 for DOD
8270D-SIM, 9040B, 9045C, 9056A, 9060A, AK101 and AK102/103). Except as specifically noted, all statements and data in this report are in conformance to the
provisions set forth by the SGS QAP and, when applicable, other regulatory authorities. The following descriptors or qualifiers may be found in your report:
* The analyte has exceeded allowable regulatory or control limits.
! Surrogate out of control limits.
B Indicates the analyte is found in a blank associated with the sample.
CCV Continuing Calibration Verification
CL Control Limit
D The analyte concentration is the result of a dilution.
DF Dilution Factor
DL Detection Limit (i.e., maximum method detection limit)
E The analyte result is above the calibrated range.
F Indicates value that is greater than or equal to the DL
GT Greater Than
ICV Initial Calibration Verification
J The quantitation is an estimation.
JL The analyte was positively identified, but the quantitation is a low estimation.
LCS(D) Laboratory Control Spike (Duplicate)
LOD Limit of Detection (i.e., 2xDL)
LOQ Limit of Quantitation (i.e., reporting or practical quantitation limit)
LT Less Than
M A matrix effect was present.
MB Method Blank
MS(D) Matrix Spike (Duplicate)
ND Indicates the analyte is not detected.
Q QC parameter out of acceptance range.
R Rejected
RL Reporting Limit
RPD Relative Percent Difference
U Indicates the analyte was analyzed for but not detected.
Note: Sample summaries which include a result for "Total Solids" have already been adjusted for moisture content.
All DRO/RRO analyses are integrated per SOP.
Print Date: 7/3/2012
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Matrix
SGS Ref.#
Client Name
Project Name/#
Printed Date/Time 07/03/2012 8:20Batch
Method
Date
Prep
1093891 Method Blank
Shannon & Wilson, Inc.
17172-013 4501 Lake Otis
Water (Surface, Eff., Ground)
VXX23618
SW5030B
06/19/2012
QC results affect the following production samples:
LABORATORY DATA REVIEW CHECKLIST CS Report Name: 2012 Progress Sampling and Monitoring Well Installation, 4501 Lake Otis Parkway, Anchorage, Alaska Date: October 2012 Laboratory Report Date: 7/3/2012 Consultant Firm: Shannon & Wilson, Inc. Completed by: Jessica Busey Title: Environmental Scientist Laboratory Name: SGS Environmental Services, Inc. Work Order Number:
1122334
ADEC File Number: 2100.38.511 (NOTE: NA = not applicable; Text in italics added by Shannon & Wilson, Inc.)
1. Laboratory a. Did an ADEC CS approved laboratory receive and perform all of the submitted sample
analyses? Yes / No Comments:
b. If the samples were transferred to another "network" laboratory or sub-contracted to an alternate laboratory, was the laboratory performing the analyses ADEC CS-approved? NA / Yes / No Comments:
2. Chain of Custody (COC)
a. COC information completed, signed, and dated (including released/received by)? Yes / No Comments:
b. Correct analyses requested? Yes / No Comments:
3. Laboratory Sample Receipt Documentation
a. Sample/cooler temperature documented and within range at receipt (4° ± 2° C)?
Yes / No Comments:
Work Order Number: 1122334
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 2 of 5
b. Sample preservation acceptable - acidified waters, Methanol-preserved VOC soil (GRO, BTEX, VOCs, etc.)? NA / Yes / No Comments:
c. Sample condition documented - broken, leaking (soil MeOH), zero headspace (VOC
vials)? Yes / No Comments: No undesireable sample conditions noted.
d. If there were any discrepancies, were they documented (e.g., incorrect sample
containers/preservation, sample temperatures outside range, insufficient sample size, missing samples)? NA / Yes / No Comments: No discrepancies noted.
e. Data quality or usability affected? Explain.
Comments: No.
4. Case Narrative
a. Present and understandable? Yes / No Comments:
b. Discrepancies, errors or QC failures noted by the lab? None Noted / Yes Comments: The DRO/RRO surrogate recoveries were outside QC criteria (low) for the IB.
c. Were corrective actions documented? None Noted / Yes Comments: All associated QC and samples have passing recoveries for these surrogates, no corrective action was warranted.
d. What is the effect on data quality/usability, according to the case narrative? Comments: The case narrative does not comment on data quality/usability.
5. Sample Results
a. Correct analyses performed/reported as requested on COC? Yes / No
Comments:
b. All applicable holding times met? Yes / No Comments:
c. All soils reported on a dry-weight basis? NA / Yes / No Comments: No soil samples submitted
d. Are the reported LOQs less than the Cleanup Level or the minimum required detection level for the project? Yes / No Comments:
Work Order Number: 1122334
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 3 of 5
e. Data quality or usability affected? Explain. Comments: No.
6. QC Samples
a. Method Blank
i. One method blank reported per matrix, analysis, and 20 samples?
Yes / No Comments:
ii. All method blank results less than LOQ? Yes / No Comments:
iii. If above LOQ, what samples are affected? NA
Comments:
iv. Do the affected sample(s) have data flags? NA / Yes / No Comments:
If so, are the data flags clearly defined? NA / Yes / No Comments:
v. Data quality or usability affected? Explain. NA Comments:
b. Laboratory Control Sample/Duplicate (LCS/LCSD)
i. Organics - One LCS/LCSD reported per matrix, analysis, and 20 samples? (LCS/LCSD required per AK methods, LCS required per SW846) N/A / Yes / No Comments:
ii. Metals/Inorganics - One LCS and one sample duplicate reported per matrix, analysis and 20 samples? N/A / Yes / No Comments: No metals/inorganics submitted
iii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs, if applicable. (AK petroleum methods: AK101 60%-120%, AK102 75%-125%, AK103 60%-120%; all other analyses see the laboratory QC pages) Yes / No Comments:
Work Order Number: 1122334
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 4 of 5
iv. Precision – All relative percent differences (RPDs) reported and less than method or laboratory limits? And project specified DQOs, if applicable. RPD reported from LCS/LCSD, MS/MSD, and or sample/sample duplicate. (AK Petroleum methods 20%; all other analyses see the laboratory QC pages) Yes / No Comments:
v. If %R or RPD is outside of acceptable limits, what samples are affected? NA Comments:
vi. Do the affected samples(s) have data flags? NA / Yes / No Comments: If so, are the data flags clearly defined? NA / Yes / No Comments:
vii. Data quality or usability affected? Explain. Comments: No.
c. Surrogates - Organics Only
i. Are surrogate recoveries reported for organic analyses, field, QC and laboratory samples? NA / Yes / No Comments:
ii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs if applicable. (AK Petroleum methods 50-150 %R; all other analyses see the laboratory report pages) NA / Yes / No Comments:
iii. Do the sample results with failed surrogate recoveries have data flags? NA Yes / No Comments: No failed recoveries If so, are the data flags clearly defined? NA / Yes / No Comments:
iv. Data quality or usability affected? Explain. Comments: No.
d. Trip Blank - Volatile analyses only (GRO, BTEX, VOCs, etc.) [soil and water]
i. One trip blank reported per matrix, analysis and cooler? NA / Yes / No
Comments:
ii. Is the cooler used to transport the trip blank and volatile samples clearly indicated on the COC? NA / Yes / No (if no explain): Only one cooler submitted.
Work Order Number: 1122334
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 5 of 5
iii. All results less than LOQ? NA / Yes / No Comments:
iv. If above LOQ, what samples are affected? Comments: No results above LOQ
v. Data quality or usability affected? Explain. Comments: No.
e. Field Duplicate
i. One field duplicate submitted per matrix, analysis and 10 project samples? Yes / No Comments: Duplicate samples were not submitted as part of this work order, however, duplicate samples were analyzed for this project under separate work orders.
ii. Were the field duplicates submitted blind to the lab? NA / Yes / No Comments:
iii. Precision – All relative percent differences (RPDs) less than specified DQOs? (Recommended: 30% for water, 50% for soil) NA / Yes / No Comments:
iv. Data quality or usability affected? Explain. Comments: No.
f. Decontamination or Equipment Blank (if not applicable, a comment stating why must
be entered below) No decontamination or equipment blank used per the ADEC-approved work plan.
i. All results less than LOQ? NA / Yes / No Comments:
ii. If results are above LOQ, what samples are affected? NA Comments:
iii. Data quality or usability affected? Explain. NA Comments:
7. Other Data Flags/Qualifiers (ACOE, AFCEE, Lab-specific, etc.)
a. Are they defined and appropriate? NA / Yes / No Comments: Lab-specific qualifiers are defined on page 4 of the lab report.
SGS North America Environmental Services – Alaska DivisionProject Manager
Steven Crupi 2012.07.03 15:54:24 -08'00'
Case NarrativeSHANNOT Shannon & Wilson, Inc.1122353 17172-013 4501 Lake Otis
Customer:Project:
SGS North America Inc.
Refer to the sample receipt form for information on sample condition.
1122353002 PS 32-1-17172-013-B4MWDAK102 - Unknown hydrocarbon with several peaks is present.
1122353003 PS 32-1-17172-013-B4MW11AK102 - Unknown hydrocarbon with several peaks is present.
1122353004 PS 32-1-17172-013-B4MWMAK101 - BFB (surrogate) recovery does not meet QC criteria (biased high) due to matrix interference.AK102 - Unknown hydrocarbon with several peaks is present.
* QC comments may be associated with the field samples found in this report. When applicable, comments will be applied to the associated field samples.
This data package is in compliance with the terms and conditions of the contract, both
technically and for completeness, unless otherwise noted on the sample data sheet(s) and/or
case narrative. This certification applies only to the tested parameters and the specific
sample(s) received at the laboratory. If you have any questions regarding this report, or if we
can be of further assistance, please contact your SGS Project Manager.
1122353
Shannon & Wilson, Inc.
Workorder No.:
Client:
Project:
Laboratory Analytical Report
Contents (Bookmarked in PDF):
Cover Page
Glossary
Sample Summary Forms
Case Narrative
Sample Results Forms
Batch Summary Forms (by method)
Quality Control Summary Forms (by method)
Chain of Custody/Sample Receipt Forms
Attachments (if applicable)
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Enclosed are the analytical results associated with the above work order. All results are intended to be used in their entirety and SGS is not
responsible for use of less than the complete report. If you have any questions regarding this report, or if we can be of any other assistance, please
contact your SGS Project Manager at 907-562-2343. All work is provided under SGS general terms and conditions
(<http://www.sgs.com/terms_and_conditions.htm>), unless other written agreements have been accepted by both parties.
SGS maintains a formal Quality Assurance/Quality Control (QA/QC) program. A copy of our Quality Assurance Plan (QAP), which outlines this program, is
available at your request. The laboratory certification numbers are AK00971 (DW Chemistry & Microbiology) & UST-005 (CS) for ADEC and 2944.01 for DOD
8270D-SIM, 9040B, 9045C, 9056A, 9060A, AK101 and AK102/103). Except as specifically noted, all statements and data in this report are in conformance to the
provisions set forth by the SGS QAP and, when applicable, other regulatory authorities. The following descriptors or qualifiers may be found in your report:
* The analyte has exceeded allowable regulatory or control limits.
! Surrogate out of control limits.
B Indicates the analyte is found in a blank associated with the sample.
CCV Continuing Calibration Verification
CL Control Limit
D The analyte concentration is the result of a dilution.
DF Dilution Factor
DL Detection Limit (i.e., maximum method detection limit)
E The analyte result is above the calibrated range.
F Indicates value that is greater than or equal to the DL
GT Greater Than
ICV Initial Calibration Verification
J The quantitation is an estimation.
JL The analyte was positively identified, but the quantitation is a low estimation.
LCS(D) Laboratory Control Spike (Duplicate)
LOD Limit of Detection (i.e., 2xDL)
LOQ Limit of Quantitation (i.e., reporting or practical quantitation limit)
LT Less Than
M A matrix effect was present.
MB Method Blank
MS(D) Matrix Spike (Duplicate)
ND Indicates the analyte is not detected.
Q QC parameter out of acceptance range.
R Rejected
RL Reporting Limit
RPD Relative Percent Difference
U Indicates the analyte was analyzed for but not detected.
Note: Sample summaries which include a result for "Total Solids" have already been adjusted for moisture content.
All DRO/RRO analyses are integrated per SOP.
Print Date: 7/3/2012
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
SGS No rth Am eric a Inc . En vir onm enta l Divis ion 200 W e st Pot ter D rive Anc hora ge AK 99518 t(907 )562.2343 f( 907)561 .5301 w ww.us.sgs .com M ember of SG S Group
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Matrix
SGS Ref.#
Client Name
Project Name/#
Printed Date/Time 07/03/2012 15:49Batch
Method
Date
Prep
1094749 Method Blank
Shannon & Wilson, Inc.
17172-013 4501 Lake Otis
Water (Surface, Eff., Ground)
VXX23635
SW5030B
06/18/2012
QC results affect the following production samples:
1122353002, 1122353003, 1122353005
Parameter Results LOQ/CL UnitsAnalysis
DateDL
Volatile Gas Chromatography/Mass Spectroscopy
cis-1,2-Dichloroethene 0.620 U 1.00 ug/L 06/19/120.310
LABORATORY DATA REVIEW CHECKLIST CS Report Name: 2012 Progress Sampling and Monitoring Well Installation, 4501 Lake Otis Parkway, Anchorage, Alaska Date: October 2012 Laboratory Report Date: 7/3/2012 Consultant Firm: Shannon & Wilson, Inc. Completed by: Jessica Busey Title: Environmental Scientist Laboratory Name: SGS Environmental Services, Inc. Work Order Number:
1122353
ADEC File Number: 2100.38.511 (NOTE: NA = not applicable; Text in italics added by Shannon & Wilson, Inc.)
1. Laboratory a. Did an ADEC CS approved laboratory receive and perform all of the submitted sample
analyses? Yes / No Comments:
b. If the samples were transferred to another "network" laboratory or sub-contracted to an alternate laboratory, was the laboratory performing the analyses ADEC CS-approved? NA / Yes / No Comments:
2. Chain of Custody (COC)
a. COC information completed, signed, and dated (including released/received by)? Yes / No Comments:
b. Correct analyses requested? Yes / No Comments:
3. Laboratory Sample Receipt Documentation
a. Sample/cooler temperature documented and within range at receipt (4° ± 2° C)?
Yes / No Comments:
Work Order Number: 1122353
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 2 of 6
b. Sample preservation acceptable - acidified waters, Methanol-preserved VOC soil (GRO, BTEX, VOCs, etc.)? NA / Yes / No Comments:
c. Sample condition documented - broken, leaking (soil MeOH), zero headspace (VOC
vials)? Yes / No Comments: Several VOAs contained bubbles.
d. If there were any discrepancies, were they documented (e.g., incorrect sample
containers/preservation, sample temperatures outside range, insufficient sample size, missing samples)? NA / Yes / No Comments: Sample B5MWM did not have any VOAs without bubbles, the lab acquired authorization from the sampler to run the sample.
e. Data quality or usability affected? Explain.
Comments: No.
4. Case Narrative
a. Present and understandable? Yes / No Comments:
b. Discrepancies, errors or QC failures noted by the lab? None Noted / Yes Comments: The GRO surrogate recoveries were outside QC criteria (high) for Sample B4MWM.
c. Were corrective actions documented? None Noted / Yes Comments:
d. What is the effect on data quality/usability, according to the case narrative? Comments: The case narrative does not comment on data quality/usability.
5. Sample Results
a. Correct analyses performed/reported as requested on COC? Yes / No
Comments:
b. All applicable holding times met? Yes / No Comments:
c. All soils reported on a dry-weight basis? NA / Yes / No Comments: No soil samples submitted
d. Are the reported LOQs less than the Cleanup Level or the minimum required detection level for the project? Yes / No Comments:
Work Order Number: 1122353
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 3 of 6
e. Data quality or usability affected? Explain. Comments: No.
6. QC Samples
a. Method Blank
i. One method blank reported per matrix, analysis, and 20 samples?
Yes / No Comments:
ii. All method blank results less than LOQ? Yes / No Comments:
iii. If above LOQ, what samples are affected? NA
Comments:
iv. Do the affected sample(s) have data flags? NA / Yes / No Comments:
If so, are the data flags clearly defined? NA / Yes / No Comments:
v. Data quality or usability affected? Explain. NA Comments:
b. Laboratory Control Sample/Duplicate (LCS/LCSD)
i. Organics - One LCS/LCSD reported per matrix, analysis, and 20 samples? (LCS/LCSD required per AK methods, LCS required per SW846) N/A / Yes / No Comments:
ii. Metals/Inorganics - One LCS and one sample duplicate reported per matrix, analysis and 20 samples? N/A / Yes / No Comments: No metals/inorganics submitted
iii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs, if applicable. (AK petroleum methods: AK101 60%-120%, AK102 75%-125%, AK103 60%-120%; all other analyses see the laboratory QC pages) Yes / No Comments:
Work Order Number: 1122353
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 4 of 6
iv. Precision – All relative percent differences (RPDs) reported and less than method or laboratory limits? And project specified DQOs, if applicable. RPD reported from LCS/LCSD, MS/MSD, and or sample/sample duplicate. (AK Petroleum methods 20%; all other analyses see the laboratory QC pages) Yes / No Comments:
v. If %R or RPD is outside of acceptable limits, what samples are affected? NA Comments:
vi. Do the affected samples(s) have data flags? NA / Yes / No Comments: If so, are the data flags clearly defined? NA / Yes / No Comments:
vii. Data quality or usability affected? Explain. Comments: No.
c. Surrogates - Organics Only
i. Are surrogate recoveries reported for organic analyses, field, QC and laboratory samples? NA / Yes / No Comments:
ii. Accuracy – All percent recoveries (%R) reported and within method or laboratory limits? And project specified DQOs if applicable. (AK Petroleum methods 50-150 %R; all other analyses see the laboratory report pages) NA / Yes / No Comments: The GRO surrogate recovery for Sample B4MWM is outside QC goals (high).
iii. Do the sample results with failed surrogate recoveries have data flags? NA Yes / No Comments: The failed surrogate recovery is flagged, but the sample result is not flagged in the lab report. The result is flagged in our report tables. If so, are the data flags clearly defined? NA / Yes / No Comments:
iv. Data quality or usability affected? Explain. Comments: The reported GRO concentration for Sample B4MWM may be biased high, the GRO result has been flagged in the project tables.
d. Trip Blank - Volatile analyses only (GRO, BTEX, VOCs, etc.) [soil and water]
i. One trip blank reported per matrix, analysis and cooler? NA / Yes / No
Comments:
Work Order Number: 1122353
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 5 of 6
ii. Is the cooler used to transport the trip blank and volatile samples clearly indicated on the COC? NA / Yes / No (if no explain): Only one cooler submitted.
iii. All results less than LOQ? NA / Yes / No Comments:
iv. If above LOQ, what samples are affected? Comments: No results above LOQ
v. Data quality or usability affected? Explain. Comments: No.
e. Field Duplicate
i. One field duplicate submitted per matrix, analysis and 10 project samples? Yes / No Comments: Sample B4MW11 is a duplicate of Sample B4MWD.
ii. Were the field duplicates submitted blind to the lab? NA / Yes / No Comments:
iii. Precision – All relative percent differences (RPDs) less than specified DQOs? (Recommended: 30% for water, 50% for soil) NA / Yes / No Comments: Toluene and ethylbenzene had RPDs greater than the DQOs, 150 and 120 percent respectively. Note that at least one sample contained estimated concentrations of these target analytes.
iv. Data quality or usability affected? Explain. Comments: No. The failed RPDs were for concentrations that are significantly less than the applicable cleanup levels, the data is considered usable for the purposes of this project.
f. Decontamination or Equipment Blank (if not applicable, a comment stating why must
be entered below) No decontamination or equipment blank used per the ADEC-approved work plan.
i. All results less than LOQ? NA / Yes / No Comments:
ii. If results are above LOQ, what samples are affected? NA Comments:
iii. Data quality or usability affected? Explain. NA Comments:
Work Order Number: 1122353
32-1-17172-014, 4501 Lake Otis Parkway, Anchorage, Alaska Page 6 of 6
7. Other Data Flags/Qualifiers (ACOE, AFCEE, Lab-specific, etc.)
a. Are they defined and appropriate? NA / Yes / No Comments: Lab-specific qualifiers are defined on page 4 of the lab report.