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Southern Maryland Wood Treating

US Army Corps Of Engineers, Baltimore District
Contract Number DACW 31-01-C-0018

Post-closure Monitoring Report

Quarter 3, September 2002
Southern Maryland Wood Treating
Hollywood, Maryland

Prepared for
United States Army Corp of Engineers
Prepared by
Resource Management Concepts, Inc.
Lexington Park, Maryland 20653

Appendix D: Data Validation Reports

This data validation report is for the groundwater samples collected for the Post-Closure Monitoring at SMWT Site (Hollywood, MD) on September 10-13, 2002. Samples were analyzed for PAHs compounds using SW-846 Method 3510C/8310. A total of 11 aqueous samples were validated; the sample IDs are:

Field Sample ID Lab. Sample ID
MW21D C2I130265-001
MW13 C2I130265-002
MW14 Not Sampled
MW27R Not Sampled
MW37D C2I120209-003
MW38 C2I120209-001
MW32 C2I130265-005
MW36 C2I160145-001
MW17R C2I130265-004
MW20D C2I130265-003
MW33 C2I110240-001
MW34D C2I110240-002
MW35 C2I120209-002
EQUIP. RINSATE BLANK C2I160145-002
FIELD BLANK C2I160145-003

The data was reviewed by RMC, Inc. personnel and validated using a combination of method-specific criteria, laboratory Standard Operatingon Procedures (SOPs), and the Innovative Approach to Data Validation for USEPA Region III (June 1995). Parameters evaluated under data validation procedure Level M3 are presented in Table 5. Data associated with parameters in compliance with quality control specifications have not been qualified. Data associated with parameters that did not comply with quality control specifications and directly impacted project data have been qualified in accordance with USEPA Region III specifications.

Table 5: Laboratory Performance Criteria

Qualified Parameter
Yes No
  X Holding Times
  X Blank Analysis
  X Initial Calibration
  X Continuing Calibration
  X System Monitoring Compounds
  X Laboratory Control Sample/LCS Duplicate
  X Quantitation Verification

The quality of data collected in support of this sampling activity is considered acceptable with applicable qualifications.

I Holding Times

Form 1

The objective is to ascertain the validity of results based on the holding time of the sample from time of collection to time of sample extraction and analysis. For PAH compounds in cooled (@4º C + 2º C) aqueous samples, the maximum holding time is seven days from sample collection to extraction and 40 days from extraction to analysis.

II Initial Calibration

Form V1 and Chromatograms

Compliance requirements for satisfactory instrument calibration are established to ensure that the instrument used is capable of producing acceptable qualitative and quantitative data for PAH target compounds. Initial calibration demonstrates that the instrument is capable of acceptable performance in the beginning of the analytical run and of producing a linear curve. The percent relative standard deviation of the calibration factors (%RSD) should be < 20%. If linear regression is used, the correlation coefficient must be > 0.990 for all target compounds.

III Continuing Calibration

Form VII and Chromatograms

Compliance requirements for satisfactory instrument calibration are established to ensure that the instrument used is capable of producing acceptable qualitative and quantitative data for target compounds. Continuing calibration establishes that the initial calibration is still valid. It also establishes the 12-hour relative response factors on which the quantitations are based and checks satisfactory performance of the instrument on a day-to-day basis. The percent difference (%D) between the initial calibration factor (CF) and the continuing CF must be < 15 %.

IV Blank Analysis

Form I, IV, and Chromatograms

The purpose of blank analysis is to determine the presence and magnitude of contamination problems resulting from field or laboratory activities. No contaminants should be detected in any of the associated blanks. Positive sample results are qualified "B" if the concentration of analyte is < five times (5x) the absolute maximum blank concentration.

No contaminants were detected in the intra lab blank. All criteria were met. No qualifiers were applied.

V System Monitoring Compounds (Surrogates)

Form II and Chromatograms

Laboratory performance on individual samples is established by means of spiking activities. All samples are spiked with surrogate compound(s) prior to sample preparation. Surrogate-spiked recoveries must be within the specified control limits. When surrogates have percent recoveries below the control limit, positive sample results are qualified as biased low ("L") and non-detects ("UL"). Table 6 summarizes the surrogate recovery analysis.

Table 6: Surrogate Recovery Analysis

Field Sample # S1-Column 1% R* S1-Column 2% R* S2-Column 1% R* S2-Column 2% R* Qualifiers
MW21D 94 95 100 95  
MW13 88 89 93 89  
MW14 Not sampled.
MW27R Not sampled.
MW37D 94 94 102 94  
MW38 87 87 92 86  
MW32 91 92 95 92  
MW36 82 82 87 83  
MW17R 91 92 96 92  
MW20D 92 92 97 92  
MW33 93 Not analyzed 95 Not analyzed  
MW34D 93 Not analyzed 94 Not analyzed  
MW35 93 93 98 92  
EQUIP. RINSATE BLANK 91 91 95 91  
FIELD BLANK 87 87 92 88  

* % R = % Recovery

Control Limit
(S1) p-Terphenyl
(75-138%R)
(S2) Benzo (e) pyrene
(71-131%R)

VI Laboratory Control Sample/LCS Duplicate

Form III and Chromatograms

Data for laboratory control samples are generated to determine long-term precision and accuracy of the analytical method on various matrices. Percent recoveries must be within the specified method control limits.

VII Quantitation Verification

Form 1 and Chromatograms

The accuracy of the analytical results is verified through the calculation of several parameters. The percent difference (%D) between the calculated and reported values must be within 10%. Any positive value < RL (reporting limit) and > MDL (method detection limit) is reported as estimated "J." Positive results must be confirmed on a secondary chromatographic column. When the percent difference between the results calculated from each column is more than 40%, the reported results are qualified as estimate "J."

Sample: MW36 (C2I160145-001) Column 1, p-terphenyl

Conc. μg/L = Amt * DF * Vt / Vo / Vi

where:

Conc. μg/L = 8.15697 ng * 1 * 1,000 μL / 1,000 mL / 1.0 μL = 8.15697μg/L

Sample: MW36 (C2I160145-001) Column 2, p-terphenyl

Conc. μg/L = Amt * DF * Vt / Vo / Vi

where:

Conc. μg/L = 8.23902 ng * 1 * 1,000 μL / 1,000 mL / 1.0 μL = 8.23902 μg/L


This data validation report for groundwater samples collected for the Post-Closure Monitoring at SMWT Site (Hollywood, MD) on September 10 through September 13, 2002. Samples were analyzed for gas chromatography/mass spectrometry (GC/MS) semivolatile compounds using SW-846 Method 8270C. A total of 11 aqueous samples were validated; the sample IDs are:

Field Sample ID Lab. Sample ID
MW21D C2I130265-001
MW13 C2I130265-002
MW14 Not Sampled
MW27R Not Sampled
MW37D C2I120209-003
MW38 C2I120209-001
MW32 C2I130265-005
MW36 C2I160145-001
MW17R C2I130265-004
MW20D C2I130265-003
MW33 C2I110240-001
MW34D C2I110240-002
MW35 C2I120209-002
EQUIP. RINSATE BLANK C2I160145-002
FIELD BLANK C2I160145-003

The data was reviewed by RMC, Inc., personnel and validated using a combination of method-specific criteria, laboratory SOP, and the Innovative Approach to Data Validation for USEPA Region III (June 1995). Parameters evaluated under data validation procedure Level M3 are presented in Table 7. Data associated with parameters in compliance with quality control specifications have not been qualified. Data associated with parameters that did not comply with quality control specifications and directly impacted project data have been qualified in accordance with USEPA Region III specifications.

Table 7: Laboratory Performance Criteria

Qualified Parameter
Yes No
  X Holding Times
  X Blank Analysis
  X Initial Calibration
  X Continuing Calibration
  X System Monitoring Compounds
  X Laboratory Control Sample/LCS Duplicate
  X Quantitation Verification

The quality of data collected in support of this sampling activity is considered acceptable with applicable qualifications.

I Holding Times

Form 1

The objective is to ascertain the validity of results based on the holding time of the sample from time of collection to time of sample extraction and analysis. For semivolatile compounds in cooled (@4º C + 2º C) aqueous samples, the maximum holding time is seven days from sample collection to extraction and 40 days from extraction to analysis.

II Initial Calibration

Form V1 and Chromatograms

Compliance requirements for satisfactory instrument calibration are established to ensure that the instrument used is capable of producing acceptable qualitative and quantitative data for semivolatile target compounds. Initial calibration demonstrates that the instrument is capable of acceptable performance in the beginning of the analytical run and of producing a linear curve. The percent relative standard deviation of the calibration factors (%RSD) should be < 20%. If linear regression is used, the correlation coefficient must be > 0.990 for all target compounds.

III Continuing Calibration

Form VII and Chromatograms

Compliance requirements for satisfactory instrument calibration are established to ensure that the instrument used is capable of producing acceptable qualitative and quantitative data for target compounds. Continuing calibration establishes that the initial calibration is still valid. It also establishes the 12-hour relative response factors on which the quantitations are based and checks satisfactory performance of the instrument on a day-to-day basis. The percent difference (%D) between the initial CF and the continuing CF must be < 15 %.

IV Blank Analysis

Form I, IV, and Chromatograms

The purpose of blank analysis is to determine the presence and magnitude of contamination problems resulting from field or laboratory activities. No contaminants should be detected in any of the associated blanks. Positive sample results are qualified "B" if the concentration of analyte is < five times (5x) the absolute maximum blank concentration.

V System Monitoring Compounds (Surrogates)

Form II and Chromatograms

Laboratory performance on individual samples is established by means of spiking activities. All samples are spiked with surrogate compound(s) prior to sample preparation. Surrogate-spiked recoveries must be within the specified control limits. When surrogates have percent recoveries below the control limit, positive sample results are qualified as biased low ("L") and non-detects ("UL"). Table 8 summarizes the surrogate recovery analysis.

Table 8: Surrogate Recovery Analysis

Field Sample # Surrogate 1 %R* Surrogate 2 %R* Surrogate 3 %R* Surrogate 4 %R* Surrogate 5 %R* Surrogate 6 %R* Qualifiers
MW21D 60 77 77 84 67 79  
MW13 63 65 63 70 63 71  
MW14 Not sampled.
MW27R Not sampled.
MW37D 82 70 73 79 62 59  
MW38 71 67 66 75 71 78  
MW32 69 67 68 73 65 79  
MW36 94 81 74 88 75 73  
MW17R 69 68 63 72 63 81  
MW20D 66 67 66 73 62 72  
MW33 74 66 68 74 67 59  
MW34D 80 69 75 78 64 76  
MW35 83 73 77 79 77 76  
EQUIP. RINSATE BLANK Not analyzed.
FIELD BLANK 95 78 66 80 67 75  

* % R = % Recovery

Control Limit
(Surrogate 1) 2,4,6-Tribromophenol
(21-122 %R)
(Surrogate 2) 2-Fluorobiphenyl
(30-110 %R)
(Surrogate 3) 2-Fluorophenol
(13-110 %R)
(Surrogate 4) Nitrobenzene-d5
(32-112 %R)
(Surrogate 5) Phenol-d5
(10-113 %R)
(Surrogate 6) Terphenyl-d14
(10-144 %R)

VI Laboratory Control Sample/LCS Duplicate

Form III and chromatograms

Data for laboratory control samples are generated to determine long-term precision and accuracy of the analytical method on various matrices. Percent recoveries must be within the specified method control limits.

VII Quantitation Verification

Form 1 and chromatograms

The accuracy of the analytical results is verified through the calculation of several parameters. The percent difference (%D) between the calculated and reported values must be within 10%. Any positive value < RL (reporting limits) and > MDL (method detection limit) is reported as estimated "J". Positive results must be confirmed on a secondary chromatographic column. When the percent difference between the results calculated from each column is more than 40%, the reported results are qualified as estimate "J."

Sample: MW36 (C2I160145-001) Column 1, Nitrobenzene-d5

Conc. μg/L = Amt * DF * UF * Vt (Vo * Vi) gpc

where:

Conc. μg/L = 88.3011 ng * 1 * 1 * 1000μL / (1,060 μL * 2.0 μL) = 41.6515 μg/L


This data validation report for groundwater samples collected for the Post-Closure Monitoring at SMWT Site (Hollywood, MD) on September 10-13, 2002. Samples were analyzed for PCP herbicide compounds using SW-846 Method 8151A. A total of 11 aqueous samples were validated; the sample IDs are:

Field Sample ID Lab. Sample ID
MW21D C2I130265-001
MW13 C2I130265-002
MW14 Not Sampled
MW27R Not Sampled
MW37D C2I120209-003
MW38 C2I120209-001
MW32 C2I130265-005
MW36 C2I160145-001
MW17R C2I130265-004
MW20D C2I130265-003
MW33 C2I110240-001
MW34D C2I110240-002
MW35 C2I120209-002
EQUIP. RINSATE BLANK C2I160145-002
FIELD BLANK C2I160145-003

The data was reviewed by RMC, Inc. personnel and validated using a combination of method-specific criteria, laboratory SOP, and the Innovative Approach to Data Validation for USEPA Region III (June 1995). Parameters evaluated under data validation procedure Level M3 are presented in Table 9. Data associated with parameters in compliance with quality control specifications have not been qualified. Data associated with parameters that did not comply with quality control specifications and directly impacted project data have been qualified in accordance with USEPA Region III specifications.

Table 9: Laboratory Performance Criteria

Qualified Parameter
Yes No
  X Holding Times
  X Blank Analysis
  X Initial Calibration
  X Continuing Calibration
  X System Monitoring Compounds
  X Laboratory Control Sample/LCS Duplicate
  X Quantitation Verification

The quality of data collected in support of this sampling activity is considered acceptable with applicable qualifications.

I Holding Times

Form 1

The objective is to ascertain the validity of results based on the holding time of the sample from time of collection to time of sample extraction and analysis. For PCP herbicide compounds in cooled (@4º C + 2º C) aqueous samples, the maximum holding time is seven days from sample collection to extraction and 40 days from extraction to analysis.

II Initial Calibration

Form V1 and Chromatograms

Compliance requirements for satisfactory instrument calibration are established to ensure that the instrument used is capable of producing acceptable qualitative and quantitative data for PCP herbicide target compounds. Initial calibration demonstrates that the instrument is capable of acceptable performance in the beginning of the analytical run and of producing a linear curve. The percent relative standard deviation of the calibration factors (%RSD) should be < 20%. If linear regression is used, the correlation coefficient must be > 0.990 for all target compounds.

III Continuing Calibration

Form VII and chromatograms

Compliance requirements for satisfactory instrument calibration are established to ensure that the instrument used is capable of producing acceptable qualitative and quantitative data for target compounds. Continuing calibration establishes that the initial calibration is still valid. It also establishes the 12-hour relative response factors on which the quantitations are based and checks satisfactory performance of the instrument on a day-to-day basis. The percent difference (%D) between the initial CF and the continuing CF must be < 15 %.

IV Blank Analysis

Form I, IV, and Chromatograms

The purpose of blank analysis is to determine the presence and magnitude of contamination problems resulting from field or laboratory activities. No contaminants should be detected in any of the associated blanks. Positive sample results are qualified "B" if the concentration of analyte is < five times (5x) the absolute maximum blank concentration.

V System Monitoring Compounds (Surrogates)

Form II and Chromatograms

Laboratory performance on individual samples is established by means of spiking activities. All samples are spiked with surrogate compound(s) prior to sample preparation. Surrogate-spiked recoveries must be within the specified control limits. When surrogates have percent recoveries below the control limit, positive sample results are qualified as biased low ("L") and non-detects ("UL"). Table 10 summarizes the surrogate recovery analysis.

Table 10: Surrogate Recovery Analysis

Field Sample # S1-Column 1% R* Qualifiers
MW21D 74  
MW13 76  
MW14 Not sampled  
MW27R Not sampled  
MW37D 77  
MW38 77  
MW32 80  
MW36 85  
MW17R 81  
MW20D 77  
MW33 79  
MW34D 85  
MW35 77  
EQUIP. RINSATE BLANK Not analyzed  
FIELD BLANK 80  
Control Limit
(S1) DCAA
(53-119 %R)

VI Laboratory Control Sample (LCS)/LCS Duplicate

Form III and Chromatograms

Data for laboratory control samples are generated to determine long-term precision and accuracy of the analytical method on various matrices. Percent recoveries must be within the specified method control limits.

VII Quantitation Verification

Form 1 and Chromatograms

The accuracy of the analytical results is verified through the calculation of several parameters. The percent difference (%D) between the calculated and reported values must be within 10%. Any positive value < RL (reporting limit) and > MDL (method detection limit) is reported as estimated "J". Positive results must be confirmed on a secondary chromatographic column. When the percent difference between the results calculated from each column is more than 40%, the reported results are qualified as estimate "PG".

Sample: MW36 (C2I160145-001) Column B, DCAA

Conc. μg/L = Amt * DF * 20 * Vt / Vo / Vi

where:

Conc. μg/L = 0.04259 ng * 1 * 20 * 10,000μL / 1,000 μL / 1.0μL = 8.518 μg/L

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