ANALYTICAL REPORT. Job Number: Job Description: Old Douglas Harbor. For: PND Engineers, Inc West 36th Ave. Anchorage, AK 99503

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ANALYTICAL REPORT Job Number: 580-5385-2 Job Description: Old Douglas Harbor For: PND Engineers, Inc. 1506 West 36th Ave. Anchorage, AK 99503 Attention: Ms. Jennifer Lundberg Katie Downie Project Manager II kdownie@stl-inc.com 05/31/2007 Project Manager: Katie Downie STL Seattle is a part of Severn Trent Laboratories, Inc. This report is issued solely for the use of the person or company to whom it is addressed. Any use, copying or disclosure other than by the intended recipient is unauthorized. If you have received this report in error, please notify the sender immediately at 253-922-2310 and destroy this report immediately. STL Seattle 5755 8th Street East, Tacoma, WA 98424 Tel (253) 922-2310 Fax (253) 922-5047 www.stl-inc.com Severn Trent Laboratories, Inc. Page 1 of 31

Case Narrative for job: 580-5385-2 Client: PND Engineers Date: 05/31/2007 The additional mercury analyses were requested on May 22, 2007. This was outside of the standard 28 day hold time for mercury in environmental samples, and the results have been flagged H. MERCURY Samples 580-5385-3 through 580-5385-6, 580-5385-8 and 580-5385-9 were analyzed for mercury in accordance with EPA SW-846 Method 7471A. The samples were prepared on 05-24-2007 and analyzed on 05/25/2007, which was within outside method required holding times. Samples 580-5385-3 through 580-5385-6, 580-5385-8 and 580-5385-9 required dilution prior to analysis. The amount of mercury in sample 580-5385-3 was more than four times the matrix spike amount, and the normal control limits do not apply. The recoveries of mercury in the LCS and LCSD were acceptable. No other difficulties were encountered during the mercury analyses. All other quality control parameters were within the acceptance limits. PERCENT SOLIDS Samples 580-5385-3 through 580-5385-12 were analyzed for percent solids in accordance with EPA Method 160.3 Modified. The samples were analyzed on 03/30/2007 and 04/03/2007, which was within the required method holding time. No difficulties were encountered during the percent solids analyses. All quality control parameters were within the acceptance limits. Page 2 of 31

METHOD SUMMARY Client: PND Engineers, Inc. Job Number: 580-5385-2 Description Lab Location Method Preparation Method Matrix: Solid Mercury in Solid or Semisolid Waste (Manual Cold Vapor Technique) Mercury in Solid or Semi-Solid Waste (Manual STL SEA STL SEA SW846 7471A SW846 7471A LAB REFERENCES: STL SEA = STL Seattle METHOD REFERENCES: SW846 - "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. STL Seattle Page 3 of 31

SAMPLE SUMMARY Client: PND Engineers, Inc. Job Number: 580-5385-2 Lab Sample ID Client Sample ID Client Matrix Date/Time Sampled Date/Time Received 580-5385-3 PND07-5A Solid 580-5385-4 PND07-5C Solid 580-5385-5 PND07-6A Solid 580-5385-6 PND07-6C Solid 580-5385-8 PND07-7A Solid 580-5385-9 PND07-7C Solid 03/22/2007 1044 03/23/2007 1242 03/22/2007 1128 03/23/2007 1242 03/22/2007 1207 03/23/2007 1242 03/22/2007 1215 03/23/2007 1242 03/22/2007 1242 03/23/2007 1242 03/22/2007 1251 03/23/2007 1242 STL Seattle Page 4 of 31

Analytical Data Client: PND Engineers, Inc. Job Number: 580-5385-2 Client Sample ID: PND07-5A Lab Sample ID: Client Matrix: 580-5385-3 Solid % Moisture: 31.5 Date Sampled: Date Received: 03/22/2007 1044 03/23/2007 1242 7471A Mercury in Solid or Semisolid Waste (Manual Cold Vapor Technique) Method: Preparation: Dilution: Date Analyzed: Date Prepared: 7471A Analysis Batch: 580-19077 7471A Prep Batch: 580-18997 20 05/25/2007 1336 05/24/2007 1626 Instrument ID: Lab File ID: Initial Weight/Volume: Final Weight/Volume: SEA029 N/A 0.5790 g 50 ml Analyte DryWt Corrected: Y Result (mg/kg) Qualifier MDL RL Mercury 3.5 H 0.23 0.50 STL Seattle Page 5 of 31

Analytical Data Client: PND Engineers, Inc. Job Number: 580-5385-2 Client Sample ID: PND07-5C Lab Sample ID: Client Matrix: 580-5385-4 Solid % Moisture: 34.3 Date Sampled: Date Received: 03/22/2007 1128 03/23/2007 1242 7471A Mercury in Solid or Semisolid Waste (Manual Cold Vapor Technique) Method: Preparation: Dilution: Date Analyzed: Date Prepared: 7471A Analysis Batch: 580-19077 7471A Prep Batch: 580-18997 20 05/25/2007 1401 05/24/2007 1626 Instrument ID: Lab File ID: Initial Weight/Volume: Final Weight/Volume: SEA029 N/A 0.5494 g 50 ml Analyte DryWt Corrected: Y Result (mg/kg) Qualifier MDL RL Mercury 3.9 H 0.25 0.55 STL Seattle Page 6 of 31

Analytical Data Client: PND Engineers, Inc. Job Number: 580-5385-2 Client Sample ID: PND07-6A Lab Sample ID: Client Matrix: 580-5385-5 Solid % Moisture: 31.1 Date Sampled: Date Received: 03/22/2007 1207 03/23/2007 1242 7471A Mercury in Solid or Semisolid Waste (Manual Cold Vapor Technique) Method: Preparation: Dilution: Date Analyzed: Date Prepared: 7471A Analysis Batch: 580-19077 7471A Prep Batch: 580-18997 20 05/25/2007 1405 05/24/2007 1626 Instrument ID: Lab File ID: Initial Weight/Volume: Final Weight/Volume: SEA029 N/A 0.5155 g 50 ml Analyte DryWt Corrected: Y Result (mg/kg) Qualifier MDL RL Mercury 2.7 H 0.25 0.56 STL Seattle Page 7 of 31

Analytical Data Client: PND Engineers, Inc. Job Number: 580-5385-2 Client Sample ID: PND07-6C Lab Sample ID: Client Matrix: 580-5385-6 Solid % Moisture: 27.7 Date Sampled: Date Received: 03/22/2007 1215 03/23/2007 1242 7471A Mercury in Solid or Semisolid Waste (Manual Cold Vapor Technique) Method: Preparation: Dilution: Date Analyzed: Date Prepared: 7471A Analysis Batch: 580-19077 7471A Prep Batch: 580-18997 20 05/25/2007 1410 05/24/2007 1626 Instrument ID: Lab File ID: Initial Weight/Volume: Final Weight/Volume: SEA029 N/A 0.6016 g 50 ml Analyte DryWt Corrected: Y Result (mg/kg) Qualifier MDL RL Mercury 1.9 H 0.21 0.46 STL Seattle Page 8 of 31

Analytical Data Client: PND Engineers, Inc. Job Number: 580-5385-2 Client Sample ID: PND07-7A Lab Sample ID: Client Matrix: 580-5385-8 Solid % Moisture: 33.9 Date Sampled: Date Received: 03/22/2007 1242 03/23/2007 1242 7471A Mercury in Solid or Semisolid Waste (Manual Cold Vapor Technique) Method: Preparation: Dilution: Date Analyzed: Date Prepared: 7471A Analysis Batch: 580-19077 7471A Prep Batch: 580-18997 20 05/25/2007 1415 05/24/2007 1626 Instrument ID: Lab File ID: Initial Weight/Volume: Final Weight/Volume: SEA029 N/A 0.5692 g 50 ml Analyte DryWt Corrected: Y Result (mg/kg) Qualifier MDL RL Mercury 2.1 H 0.24 0.53 STL Seattle Page 9 of 31

Analytical Data Client: PND Engineers, Inc. Job Number: 580-5385-2 Client Sample ID: PND07-7C Lab Sample ID: Client Matrix: 580-5385-9 Solid % Moisture: 38.7 Date Sampled: Date Received: 03/22/2007 1251 03/23/2007 1242 7471A Mercury in Solid or Semisolid Waste (Manual Cold Vapor Technique) Method: Preparation: Dilution: Date Analyzed: Date Prepared: 7471A Analysis Batch: 580-19077 7471A Prep Batch: 580-18997 20 05/25/2007 1430 05/24/2007 1626 Instrument ID: Lab File ID: Initial Weight/Volume: Final Weight/Volume: SEA029 N/A 0.6182 g 50 ml Analyte DryWt Corrected: Y Result (mg/kg) Qualifier MDL RL Mercury 1.7 H 0.24 0.53 STL Seattle Page 10 of 31

Quality Control Results Client: PND Engineers, Inc. Job Number: 580-5385-2 QC Association Summary Report Lab Sample ID Client Sample ID Basis Client Matrix Method Prep Batch Metals Prep Batch: 580-18997 LCS 580-18997/15-AA Lab Control Spike T Solid 7471A LCSD 580-18997/16-AA Lab Control Spike Duplicate T Solid 7471A LCSSRM 580-18997/17-AA LCS-Standard Reference Material T Solid 7471A MB 580-18997/14-AA Method Blank T Solid 7471A 580-5385-3 PND07-5A T Solid 7471A 580-5385-3DU Duplicate T Solid 7471A 580-5385-3MS Matrix Spike T Solid 7471A 580-5385-3MSD Matrix Spike Duplicate T Solid 7471A 580-5385-4 PND07-5C T Solid 7471A 580-5385-5 PND07-6A T Solid 7471A 580-5385-6 PND07-6C T Solid 7471A 580-5385-8 PND07-7A T Solid 7471A 580-5385-9 PND07-7C T Solid 7471A Analysis Batch:580-19077 LCS 580-18997/15-AA Lab Control Spike T Solid 7471A 580-18997 LCSD 580-18997/16-AA Lab Control Spike Duplicate T Solid 7471A 580-18997 LCSSRM 580-18997/17-AA LCS-Standard Reference Material T Solid 7471A 580-18997 MB 580-18997/14-AA Method Blank T Solid 7471A 580-18997 580-5385-3 PND07-5A T Solid 7471A 580-18997 580-5385-3DU Duplicate T Solid 7471A 580-18997 580-5385-3MS Matrix Spike T Solid 7471A 580-18997 580-5385-3MSD Matrix Spike Duplicate T Solid 7471A 580-18997 580-5385-4 PND07-5C T Solid 7471A 580-18997 580-5385-5 PND07-6A T Solid 7471A 580-18997 580-5385-6 PND07-6C T Solid 7471A 580-18997 580-5385-8 PND07-7A T Solid 7471A 580-18997 580-5385-9 PND07-7C T Solid 7471A 580-18997 Report Basis T = Total STL Seattle Page 11 of 31

Quality Control Results Client: PND Engineers, Inc. Job Number: 580-5385-2 Method Blank - Batch: 580-18997 Method: 7471A Preparation: 7471A Lab Sample ID: MB 580-18997/14-AA Client Matrix: Solid Dilution: 1.0 Date Analyzed: 05/25/2007 1449 Date Prepared: 05/24/2007 1626 Analysis Batch: 580-19077 Prep Batch: 580-18997 Units: mg/kg Instrument ID: Lab File ID: SEA029 N/A Initial Weight/Volume: Final Weight/Volume: 0.5 g 50 ml Analyte Result Qual MDL RL Mercury ND 0.0090 0.020 Laboratory Control/ Laboratory Control Duplicate Recovery Report - Batch: 580-18997 Method: 7471A Preparation: 7471A LCS Lab Sample ID: LCS 580-18997/15-AA Client Matrix: Solid Dilution: 1.0 Date Analyzed: 05/25/2007 1454 Date Prepared: 05/24/2007 1626 Analysis Batch: 580-19077 Prep Batch: 580-18997 Units: mg/kg Instrument ID: SEA029 Lab File ID: N/A Initial Weight/Volume: 0.5 g Final Weight/Volume: 50 ml LCSD Lab Sample ID: LCSD Client Matrix: Solid Dilution: 1.0 Date Analyzed: 05/25/2007 1459 Date Prepared: 05/24/2007 1626 Analysis Batch: 580-19077 Prep Batch: 580-18997 Units: mg/kg Instrument ID: SEA029 Lab File ID: N/A Initial Weight/Volume: 0.5 g Final Weight/Volume: 50 ml Analyte LCS % Rec. LCSD Limit RPD RPD Limit LCS Qual LCSD Qual Mercury 99 95 75-125 5 25 Calculations are performed before rounding to avoid round-off errors in calculated results. STL Seattle Page 12 of 31

Quality Control Results Client: PND Engineers, Inc. Job Number: 580-5385-2 Laboratory Control/ Laboratory Duplicate Data Report - Batch: 580-18997 Method: 7471A Preparation: 7471A LCS Lab Sample ID: LCS Units: mg/kg LCSD Lab Sample ID: LCSD Client Matrix: Solid Client Matrix: Solid Dilution: 1.0 Dilution: 1.0 Date Analyzed: 05/25/2007 1454 Date Analyzed: 05/25/2007 1459 Date Prepared: 05/24/2007 1626 Date Prepared: 05/24/2007 1626 Analyte LCS Spike Amount LCSD Spike Amount LCS Result/Qual LCSD Result/Qual Mercury 0.200 0.200 0.198 0.189 Matrix Spike/ Matrix Spike Duplicate Recovery Report - Batch: 580-18997 Method: 7471A Preparation: 7471A MS Lab Sample ID: Client Matrix: Dilution: Date Analyzed: Date Prepared: 580-5385-3 Solid 20 05/25/2007 1351 05/24/2007 1626 Analysis Batch: 580-19077 Prep Batch: 580-18997 Instrument ID: Lab File ID: SEA029 N/A Initial Weight/Volume: Final Weight/Volume: 0.5253 g 50 ml MSD Lab Sample ID: Client Matrix: Dilution: Date Analyzed: Date Prepared: 580-5385-3 Solid 20 05/25/2007 1356 05/24/2007 1626 Analysis Batch: 580-19077 Prep Batch: 580-18997 Instrument ID: Lab File ID: SEA029 N/A Initial Weight/Volume: Final Weight/Volume: 0.5618 g 50 ml Analyte MS % Rec. MSD Limit RPD RPD Limit MS Qual MSD Qual Mercury 200 272 75-125 4 35 4 4 Calculations are performed before rounding to avoid round-off errors in calculated results. STL Seattle Page 13 of 31

Quality Control Results Client: PND Engineers, Inc. Job Number: 580-5385-2 Matrix Spike/ Matrix Spike Duplicate Data Report - Batch: 580-18997 Method: 7471A Preparation: 7471A MS Lab Sample ID: Client Matrix: Dilution: Date Analyzed: Date Prepared: 580-5385-3 Units: mg/kg MSD Lab Sample ID: 580-5385-3 Solid Client Matrix: Solid 20 Dilution: 20 05/25/2007 1351 Date Analyzed: 05/25/2007 1356 05/24/2007 1626 Date Prepared: 05/24/2007 1626 Analyte Mercury Sample Result/Qual MS Spike Amount MSD Spike Amount MS Result/Qual MSD Result/Qual 3.5 0.278 0.260 4.08 4 4.23 4 Matrix Duplicate - Batch: 580-18997 Method: 7471A Preparation: 7471A Lab Sample ID: 580-5385-3 Client Matrix: Solid Dilution: 20 Date Analyzed: 05/25/2007 1342 Date Prepared: 05/24/2007 1626 Analysis Batch: 580-19077 Prep Batch: 580-18997 Units: mg/kg Instrument ID: Lab File ID: SEA029 N/A Initial Weight/Volume: Final Weight/Volume: 0.5611 g 50 ml Analyte Sample Result/Qual Result RPD Limit Qual Mercury 3.5 3.43 3 35 Calculations are performed before rounding to avoid round-off errors in calculated results. STL Seattle Page 14 of 31

DATA REPORTING QUALIFIERS Client: PND Engineers, Inc. Job Number: 580-5385-2 Lab Section Qualifier Description Metals 4 H MS, MSD: The analyte present in the original sample is 4 times greater than the matrix spike concentration; therefore, control limits are not applicable. Sample was prepped or analyzed beyond the specified holding time STL Seattle Page 15 of 31

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