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HomeMy WebLinkAbout4.0 Water Quality Data 2007July 16, 2007 Brett Middleton, EHS Field Coordinator Encana Oil and Gas USA, Inc 2717 CR 215 Parachute, CO 81635 Garfield County BUILDING & PLANNING DEPARTMENT RE: Water sampling results from E&P Waste Facilities operated by Encana Dear Mr. Middleton, Thank you for sending the results of the water sampling analyses you sent to our office for review. The results prompted a few questions: 1) Middle Fork Water Storage Pond: Why are the Dissolved Solid readings (550 mg/I) higher than the Regulatory Standards (500 mg/I) found in the up gradient monitoring well and is there any way to reduce those levels to below Regulatory Standards? 2) Hunter Mesa Water Treatment Plant: Why are the Manganese readings (0.09 mg/I) higher than the Regulatory Standards (0.05 mg/1) found in the fresh water holding pond and is there any way to reduce those levels to below Regulatory Standards? 3) Lake Fox Water Storage Pond: The sole purpose of the Board of County Commissioner's requirement for Encana to install a down gradient water monitoring well was to monitor any activity that might come from Lake Fox. We appreciate the results from the neighboring well; however, what does Encana propose to do to its monitoring well so that it functions as required? We look forward to hearing your response to these questions. I am happy to discuss over the phone as well. Very truly yours, Fred A. Jarman, AIC Director, Building & Planning Department 970.945.8212 108 Eighth Street, Suite 401 • Glenwood Springs, CO 81601 (970) 945-8212 • (970) 285-7972 • Fax: (970) 384-3470 ENCANAn June 26, 2007 Garfield County Building & Planning Department 108 8th Street, Suite 201 Glenwood Springs, CO 81601 J /12 4� T/,/ (,/G7� RE: Middle Fork Water Storage Pond Water Quality Data. Dear Sir or Madam: 2717 County Road 215 Suite 100 Parachute, CO 81635 P: (970)285-2739 Please find the attached data summary table and laboratory analysis report for water samples collected from the Middle Fork Water Storage Pond on June 8, 2007. The data summary table also lists several reference standards for comparison with the analytical results. These standards are provided for relative comparison only, as the water is not intended to comply with any of the referenced regulatory standards. The water will be contained on site or used solely for natural gas exploration and production activities. As such, the water will not come in contact with the general public or with environmental receptors such as soil, ground water, or surface water. Please note, pages four through nine and pages thirteen through nineteen are not included in lab report L 296053 due to the results from these samples not being part of the data set for Middle Fork Pond. Please do not hesitate to contact our Parachute office should you have any questions or comments. Sincerely, EnCana Oljt& Gas (USA) Inc.. -4115( Brett Middleton EHS Field Coordinator Attachments Cc: David Grisso, EnCana Oil & Gas (USA) Inc. File RECEIVE JUN 2 9 2007 GARFIEL.D col „lyTY BUILDING 4 PLANNING Test Parameter Facility: Middle Fork Water Storage Pond Sample Date: June 8, 2007 Sample Identifier: 060807-MFP Sample Location: Storage Pond Laboratory Analytical Report Summary Analytical Regulatory Standards Units Result Level Reference Number Chloride mg/I 7,800 250 1,5 Fluoride mg/I 2 4.0 1 Bromide _ mg/I 120.00 none N/A Nitrate mg/I BDL 10.0 1,2,3,4 Nitrite mg/l BDL 1.0 1 Sulfate _ mg/I mg/I BDL 15 250 none 1,5 N/A Ammonia pH su i 7 6.5-8.5 1,3,5 Specific conductance pmhos/cm 26,000 none N/A Dissolved Solids mg/I mgA 16,000 BDL 500 0,01 1,5 2 Arsenic Barium mg/1 38 2.0 2,4 Cadmium mg/I BDL 0.005 2,4 Calcium mg/1 280 none N/A Chromium mg/I BDL 0.1 2,3 Copper mg/I 0.039 1 4,5 Iron mg/I 51 5.0 3 Lead mg/I 0.028 0.015 4 Magnesium mg/1 22 none N/A Manganese mg/I 1.2 0.05 5 Selenium mg/I BDL 0.05 2,4 Potassium mg/I 160 none N/A Silver mgll 0.011 0.05 2 Sodium mg/I 4,700 none N/A Benzene mgA _ 2.800 0.005 3 Toluene mg/1 6.000 1 4 Ethylbenzene mg/I 0.110 0.7 4 Total Xylene mgA 3.600 10 4 Methane mgA 0.098 none NIA Sulfide mg/1 0.170 none N/A Methyl tert-butyl ether (MTBE) mg/1 BDL none N/A Alkalinity mg/1 930 none N/A Alkalinity, Bicarbonate mg/I 930 none N/A Alkalinity, Carbonate mgA BDL , none N/A Notes: mgA = concentration of milligrams per liter NgA = concentration of micrograms per liter pmhos/cm = micromhos per centimeter NTU = nephelometric turbidity units BDL = below detection limit Standard Reference Numbers: Standard 1 = Colorado Department of Public Health and Environment prinking Water Regulations Maximum Contaminant Levels Standard 2 = Colorado Department of Public Health and Environment Water Quality Control Commission Ground Water Standards - Human Health Standards Standard 3 = Colorado Department of Public Health and Environment Water Quality Control Commission Ground Water Standards - Agricultural Standards Standard 4 = U.S. Environmental Protection Agency National Primary Drinking Water Standards Standard 5 = U.S. Environmental Protection Agency National Secondary Drinking Water Standards NIA = No applicable standard exists in referenced regulations. Test Parameter Facility: Middle Fork Water Storage Pond Sample Date: June 2, 2007 Sample Identifier: ENPRIOMW Sample Location: Up Gradient Monitoring Well Laboratory Analytical Report Summary Analytical Regulatory Standards Units Result Level Reference Number Chloride mg/I 56 250 1,5 Fluoride mg/I 0 4.0 1 Bromide _ mg/I _BDL none N/A Nitrate mg/I 2.8 10.0 1,2,3,4 Nitrite mg/I BDL 1.0 1 Sulfate mg/I 130 250 1,5 Ammonia mg/I BDL none N/A pH su 7.3 6.5-8.5 1,3,5 Specific conductance pmhos/cm 1,000 none N/A Dissolved Solids mg/I 550 500 1,5 Arsenic mg/I BDL 0.01 2 Barium mg/I 0.084 2.0 2,4 Cadmium mg/I BDL 0.005 2,4 Calcium _ mg/I 77 none N/A Chromium mg/I BDL 0.1 2,3 Copper mg/I BDL 1 4,5 Iron mg/I BDL 5.0 3 Lead mg/I BDL 0.015 4 Magnesium mg/I 46 none N/A Manganese mg/I BDL 0.05 5 Selenium mg/I BDL 0.05 2,4 Potassium mg/I 2.7 none N/A Silver mg/I BDL 0.05 2 Sodium mgA 58 none N/A Benzene mgif BDL 0.005 3 Toluene mgA BDL _ 1 4 Ethylbenzene mgA BDL 0.7 4 Total Xylene mgIl BDL 10 4 Methane mgI BDL none N/A Sulfide mgA BDL_ none N/A Methyl tert-butyl ether (MTBE) mgA BDL none N/A Alkalinity mg/I 320 none N/A Alkalinity, Bicarbonate mg/I 320 _ none N/A Alkalinity, Carbonate mg/I BDL none N/A Notes: mglt = concentration of milligrams per liter pg/1= concentration of micrograms per liter pmhosfcm = micromhos per centimeter NTU = nephelometric turbidity units BDL = below detection limit Standard Reference Numbers: Standard 1 = Colorado Department of Public Health and Environment Drinking Water Regulations Maximum Contaminant Levels Standard 2 = Colorado Department of Public Health and Environment Water Quality Control Commission Ground Water Standards - Human Health Standards Standard 3 = Colorado Department of Public Health and Environment Water Quality Control Commission Ground Water Standards - Agricultural Standards Standard 4 = U.S. Environmental Protection Agency National Primary Drinking Water Standards Standard 5 = U.S. Environmental Protection Agency National Secondary Drinking Water Standards NIA = No applicable standard exists in referenced regulations. Test Parameter Facility: Middle Fork Water Storage Pond Sample Date: June 2, 2007 Sample Identifier: ENPR11 MW Sample Location: Down Gradient Monitoring Well Laboratory Analytical Report Summary Analytical Regulatory Standards Units Result Level Reference Number Chloride mgA 25 250 1,5 Fluoride mgA 0.33 4.0 1 Bromide mgA BDL none N/A Nitrate mgA mglt 1.5 BDL 10.0 1.0 1,2,3,4 1 Nitrite Sulfate mgA 86 250 1,5 Ammonia mgA 0.89 none N/A pH su 7.4 6.5-8.5 1,3,5 Specific conductance pmhos/cm 800 none NIA Dissolved Solids mg/I 450 500 1,5 Arsenic mg/i BDL 0.01 2 Barium mgll 0.076 2.0 2,4 Cadmium mgA BDL 0.005 2,4 Calcium mg/I 65 none N/A Chromium mg/I BDL 0.1 2,3 Copper mg/I BDL 1 4,5 Iron mgl4 BDL 5.0 3 Lead mgA BDL 0.015 4 Magnesium mgA mgA 38 BDL none 0.05 N/A 5 Manganese Selenium mg/I BDL 0.05 2,4 Potassium mg/I 2.4 none N/A Silver mg/I BDL 0.05 2 Sodium mgA 46 none N/A Benzene mg/I BDL 0.005 3 Toluene mgA BDL 1 4 Ethylbenzene _ mg/I BDL 0.7 4 Total Xylene mg/I BDL 10 4 Methane mg/I mg/I BDL BDL none none N/A N/A Sulfide Methyl tent -butyl ether (MTBE) mgA mgll BDL 310 none none N/A N/A Alkalinity Alkalinity, Bicarbonate mg/I 310 none N/A Alkalinity, Carbonate mg/l BDL none NIA Notes: mgll = concentration of milligrams per liter pg/I = concentration of micrograms per liter pmhoslcm = micromhos per centimeter NTU = nephelometric turbidity units BDL = below detection limit Standard Reference Numbers: Standard i = Colorado Department of Public Health and Environment Drinking Water Regulations Maximum Contaminant Levels Standard 2 = Colorado Department of Public Health and Environment Water Quality Control Commission Ground Water Standards - Human Health Standards Standard 3 = Colorado Department of Public Health and Environment Water Quality Control Commission Ground Water Standards - Agricultural Standards Standard 4 = U.S. Environmental Protection Agency National Primary Drinking Water Standards Standard 5 = U.S. Environmental Protection Agency National Secondary Drinking Water Standards NIA = No applicable standard exists in referenced regulations. ENVIRONMENTAL SCIENCE CORP . Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 12065 Lebanon Rd. Mt. Juliet, TM 37122 {615} 758-5858 1-800-767-5859 Fax {615} 758-5859 Tax I.D. 62-0814289 E9t. 1970 Report Summary Friday June 08, 2007 Report Number: L296053 Samples Received: 06/02/07 Client Project: E04250 Description: N Parachute The analytical results in this report are based upon information supplied by you, the client, and are for your exclusive use. you have any questions regarding this data package, please do noj'� esitate io call. Rose, -ESC Representative Entire Report Reviewed By: Laboratory Certification Numbers A2LA - 1461-01, AIHA - 09227, AL - 40660, CA - 1-2327, CT - PH -0197, FL - E87487 GA - 923, IN - C -TN -01, KY - 90010, KYUST - 0016, NC - ENV375,DW21704, ND - R-140 NJ - TN002, SC - 84004, TN - 2006, VA - 00109, WV - 233 AZ - 0612, MN - 047-999-395, NY - 11742, WI - 998093910 This report may not be reproduced, except in full, without written approval from Environmental Science Corp. 18 Samples Reported: 06/08/07 12:23 Printed: 06/08/07 14:50 ENVIRONMENTAL SCIENCE CORP . Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 Date Received June Description ENPR Sample ID ENPR11MW 02, 2007 Collected By SM Collection Date : 06/01/07 09:30 Parameter Methane REPORT OF ANALYSIS 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-801-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 June 08, 2007 ESC Sample # : L296053-01 Site ID . Project # E04250 Result Det. Limit Units Method Date Dil. BOL 0.010 ppm 3810/RSK175 06/07/07 1 Bromide SDI, 1.0 mg/1 9056 06/02/07 1 Chloride 25. 1.0 mg/1 9056 06/02/07 1 Fluoride 0.33 0.10 mg/1 9056 06/02/07 1 Nitrate 1.5 0.10 mg/1 9056 06/02/07 1 Nitrite BDL 0.10 mg/1 9056 06/02/07 1 Sulfate 86. 5.0 mg/1 9056 06/02/07 1 Ammonia Nitrogen 0.89 0.10 mg/1 350.1 06/05/07 1 pH 7.4 su 9040A 06/02/07 1 Specific Conductance 800 umhos/cm 9050A 06/06/07 1 Sulfide HDL 0.050 mg/1 376.2 06/04/07 1 Dissolved Solids 450 1.0 mg/l 160.1 06/05/07 1 Arsenic,Dissolved BDL 0.020 mg/1 6010B 06/07/07 1 Barium,Dissolved 0.076 0.0050 mg/1 60102 06/07/07 1 Cadmium,Dissolved BDL 0.0050 mg/1 60102 06/07/07 1 Calcium,Dissolved 65. 0.50 mg/1 6010B 06/07/07 1 Chromium,Dissolved BDL 0.010 mg/1 60102 06/07/07 1 Copper,Dissolved BDL 0.020 mg/1 60102 06/07/07 1 Iron,Dissolved BDL 0.10 mg/1 6010E 06/07/07 1 Lead,Dissolved BDL 0.0050 mg/1 6010B 06/07/07 1 Magnesium,Dissolved 36. 0.10 mg/1 6010B 06/07/07 1 Manganese,Dissolved BDL 0.010 mg/1 60102 06/07/07 1 Potassium,Dissolved 2.4 0.50 mg/1 60102 06/07/07 1 Selenium,Dissolved BDL 0.020 mg/1 60102 06/07/07 1 Silver,Dissolved BDL 0.010 mg/1 60108 06/07/07 1 Sodium,Dissolved 46. 0.50 mg/1 60102 06/07/07 1 BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. ENVIRONMENTAL SCIENCE CORP . REPORT OF ANALYSIS Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 Date Received Description June ENPR Sample ID ENPR11MW 02, 2007 Collected By SM Collection Date : 06/01/07 09:30 12065 Lebanon Rd - Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5659 Tax I.D. 62-0614289 Est. 1970 June 08,2007 ESC Sample # = L296053-02 site ID . Project # E04250 Parameter Result Det. Limit Units Method Date Dil, Alkalinity 310 10. mg/1 310.2 06/04/07 1 Alkalinity,Bicarbonate 310 10. mg/1 310.2 06/04/07 1 Alkalinity,Carbonate BDL 10. mg/1 310.2 06/04/07 I BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/08/07 12:23 Printed: 06/06/07 14:53 Page 2 of 27 ENVIRONMENTAL SCIENCE CORP . REPORT OF ANALYSIS Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 Date Received Description June ENPR Sample ID ENPR11MW 02, 2007 Collected By SM Collection Date : 06/01/07 09:30 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 June 08, 2007 ESC Sample # : )I296053-03 Site ID : Project # : E04250 Parameter Result Det. Limit Units Method Date Dil. Benzene BDL 0.50 ug/1 8021/8015 06/06/07 1 Toluene BDL 5.0 ug/1 8021/8015 06/06/07 1 Ethylbenzene BDL 0.50 ug/1 8021/8015 06/06/07 1 Total Xylene BDL 1.5 ug/1 8021/8015 06/06/07 1 Methyl tert-butyl ether BDL 1.0 ug/1 8021/8015 06/06/07 1 Surrogate Recovery (70-130) a,a,a-Trifluorotoluene(FID) 105. 1 Rec. 8021/8015 06/06/07 1 a,a,a-Trifluorotoluene(PID) 101. Rec. 8021/8015 06/06/07 1 BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/08/07 12:23 Printed: 06/08/07 14:53 Page 3 of 27 s► ENVIRONMENTAL SCIENCE CORP . REPORT OP ANALYSIS Scotty Mann Cordilleran Compliance - GJ, CO 626 21 1/2 Road Grand Junction, CO 61505 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5059 Tax I.D. 62-0814289 Est. 1970 June 08, 2007 ESC Sample # : L296053-10 Date Received June 02, 2007 Description ENPR Site ID . Sample ID ENPR1OMW Project 4 : E04250 Collected By SM Collection Date 06/01/07 11:00 Parameter Result Det. Limit Units Method Date Dil. Methane BOL 0.010 ppm 3810/RSK175 06/07/07 1 Bromide BDL 1.0 mg/1 9056 06/02/07 1 Chloride 56. 1.0 mg/1 9056 06/02/07 1 Fluoride 0.38 0.10 mg/1 9056 06/02/07 1 Nitrate 2.6 0.10 mg/1 9056 06/02/07 1 Nitrite BDL 0.10 mg/1 9056 06/02/07 1 Sulfate 130 5.0 mg/1 9056 06/02/07 1 Ammonia Nitrogen BDL 0.10 mg/1 350.1 06/06/07 1 pH 7.3 su 9040A 06/02/07 1 Specific Conductance 1000 umhos/cm 9050A 06/06/07 1 Sulfide BDL 0.050 mg/1 376.2 06/04/07 1 Dissolved Solids 550 1.0 mg/1 160.1 06/05/07 1 Arsenic,Dissolved BDL 0.020 mg/1 60108 06/05/07 1 Barium,Dissolved 0.084 0.0050 mg/1 60106 06/05/07 1 Cadmium,Dissolved BDL 0.0050 mg/1 60100 06/05/07 1 Calcium,Dissolved 77. 0.50 mg/1 60108 06/05/07 1 Chromium,Dissolved BDL 0.010 mg/1 60100 06/05/07 1 Copper,Dissolved BDL 0.020 mg/1 60100 06/05/07 1 Iron,Dissolved BDL 0.10 mg/1 60100 06/05/07 1 Lead,Dissolved BDL 0.0050 mg/1 6010B 06/05/07 1 Magnesium,Dissolved 46. 0.10 mg/1 6010E 06/05/07 1 Manganese,Dissolved BDL 0.010 mg/1 60100 06/05/07 1 Potassium,Dissolved 2.7 0.50 mg/1 60100 06/05/07 1 Selenium,Dissolved BDL 0.020 mg/1 60100 06/05/07 1 Silver,Dissolved BDL 0.010 mg/1 60108 06/05/07 1 Sodium,Dissolved 58. 0.50 mg/1 601013 06/05/07 1 BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/08/07 12:23 Printed: 06/08/07 14:53 Page 10 of 27 ENVIRONMENTAL SCIENCE CORP. REPORT OF ANALYSIS Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 12065 Lebanon Rd, Mt. Juliet, TN 37122 (615} 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 June 08,2007 ESC Sample # : L296053-11 Date Received June 02, 2007 Description ENPR Site ID Sample ID ENPR10MW Project # : E04250 Collected By SM Collection Date : 06/01/07 11:00 Parameter Result Det. Limit Units Method Date Dil. Alkalinity 320 10. mg/1 310.2 06/04/07 1 Alkalinity,Bicarbonate 320 10. mg/1 310.2 06/04/07 1 Alkalinity,Carbonate BDL 10. mg/1 310.2 06/04/07 1 BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/08/07 12:23 Printed: 06/06/07 14:53 Page 11 of 27 ENVIRONMENTAL SCIENCE CORP . REPORT OF ANALYSIS Scotty Mann Cordilleras Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5659 Tax I.D. 62-0814289 Est. 1970 June 08, 2007 ESC Sample # : L296053-12 Date Received June 02, 2007 Description ENPR Site ID : Sample ID ENPR10MW Project # : E04250 Collected By SM Collection Date 06/01/07 11:00 Parameter Result Det. Limit Units Method Date Dil. Benzene BDL 0.50 ug/1 8021/801506/06/07 1 Toluene BDL 5.0 ug/1 8021/8015 06/06/07 1 Ethylbenzene BDL 0.50 ug/1 8021/801506/06/07 1 Total Xylene BDL 1.5 ug/1 8021/8015 06/06/07 1 Methyl tert-butyl ether BDL 1.0 ug/1 8021/8015 06/06/07 1 Surrogate Recovery (70-130) a,a,a-Trifluorotoluene(FID) 106. % Rec. 8021/8015 06/06/07 1 a,a,a-Trifluorotoluene(PID) 101. t Rec. 8021/8015 06/06/07 1 BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/08/07 12:23 Printed: 06/08/07 14:53 Page 12 Of 27 Sample # Attachment A List of Analytes with QC Qualifiers Analyte Qualifier L296053-01 pH T8 L296053-04 pH T8 L296053-07 Ammonia Nitrogen T2 pH T8 Silver,Diseolved J6 Sodium, Dissolved V L296053-10 pH T8 L296053-13 pH T8 L296053-16 pH T8 Calcium,Dissolved J3 Silver,Dissolved J6J3 Page 19 of 27 Attachment B Explanation of QC Qualifier Codes Qualifier Meaning J3 The associated batch QC was outside the established quality control range for precision. J6 The sample matrix interfered with the ability to make any accurate determination; spike value is low T2 (ESC) - Additional method/sample information: The laboratory analysis was from an unpreserved or improperly preserved sample. T8 (ESC) - Additional method/sample information: Sample(s) received past/too close to holding time expiration. V (ESC) - Additional QC Info: The sample concentration is too high to evaluate accurate spike recoveries. Qualifier Report Information ESC utilizes sample and result qualifiers as set forth by the EPA Contract Laboratory Program and as required by most certifying bodies including NELAC. In addition to the EPA qualifiers adopted by ESC, we have implemented ESC qualifiers to provide more information pertaining to our analytical results. Each qualifier is designated in the qualifier explanation as either EPA or ESC. Data qualifiers are intended to provide the ESC client with more detailed information concerning the potential bias of reported data. Because of the wide range of constituents and variety of matrices incorporated by most EPA methods,it is common for some compounds to fall outside of established ranges. These exceptions are evaluated and all reported data is valid and useable unless qualified as 'R' (Rejected). Definitions Accuracy - The relationship of the observed value of a known sample to the true value of a known sample. Represented by percent recovery and relevant to samples such as: control samples, matrix spike recoveries, surrogate recoveries, etc. Precision - The agreement between a set of samples or between duplicate samples. Relates to how close together the results are and is represented by Relative Percent Differrence. Surrogate Organic compounds that are similar in chemical composition, extraction, and chromotography to analytes of interest. The surrogates are used to determine the probable response of the group of analytes that are chem- ically related 10 the surrogate compound. Surrogates are added to the sample and carried through all stages of preparation and analyses. Control Limits (AQ) (SS) 2-Fluorophenol 31-119 Nitrobenzene -d5 43-118 Dibromfluoromethane 68-128 64-125 Phenol -d5 12-134 2-Fluorobiphenyl 45-128 Toluene -d8 76-115 69-118 2,4,6-Tribromophenol 51-141 Terphenyl-d14 43-137 4-Bromofluorobenzene 79-127 61-134 TIC - Tentatively Identified Compound: Compounds detected in samples that are not target compounds, internal standards, system monitoring compounds, or surrogates. Page 20 of 27 Summary of Remarks For Samples Printed 06/08/07 at 14:54:17 TSR Signing Reports: 151 R5 - Desired TAT cb-1/05;Run ALKs on separate dash, 1 day TAT, R3 priority; Client sends unpreserved vials for all projects; Run BTEXM on separate dash Sample: L296053-01 Account: CORCOMGCO Received: Field Filtered total=$479 Sample: L296053-02 Account: CORCOMGCO Received: Sample: L296053-03 Account: CORCOMGCO Received: Report BTEXM Sample: L296053-04 Account: CORCOMGCO Received: Field Filtered total=$479 Sample: L296053-05 Account: CORCOMGCO Received: Sample: L296053-06 Account: CORCOMGCO Received: Report BTEXM Sample: 5296053-07 Account: CORCOMGCO Received: Field Filtered total=$479 Sample: L296053-08 Account: CORCOMGCO Received: Sample: L296053-09 Account: CORCOMGCO Received: Report BTEXM Sample: L296053-10 Account: CORCOMGCO Received: Field Filtered total=$479 Sample: L296053-11 Account: CORCOMGCO Received: Sample: L296053-12 Account: CORCOMGCO Received: Report BTEXM Sample: L296053-13 Account: CCRCOMGCO Received: Field Filtered total=$479 Sample: L296053-14 Account: CORCOMGCO Received: Sample: L296053-15 Account: CORCOMGCO Received: Report BTEXM Sample: L296053-16 Account: CORCOMGCO Received: Field Filtered total=$479 Sample: L296053-17 Account: CORCOMGCO Received: Sample: L296053-18 Account: CORCOMGCO Received: Report BTEXM 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/04/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/04/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/04/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/04/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/04/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/04/07 00:00 RPT Date: 06/08/07 12:23 06/02/07 09:00 Due Date: 06/08/07 00:00 RPT Date: 06/08/07 12:23 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level II Grand Junction, CO 81505 June 08, 2007 L296053 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax Z.D. 62-0814289 Est. 1970 Laboratory Blank Analyte Result Units Date Analyzed Batch Bromide Chloride Fluoride Nitrate Nitrite Sulfate Dissolved Solids pH Ammonia Nitrogen Alkalinity Sulfide Arsenic, Dissolved Barium, Dissolved Cadmium, Dissolved Calcium, Dissolved Chromium, Dissolved Copper, Dissolved Iron, Dissolved Lead,Dissolved Magnesium, Dissolved Manganese, Dissolved Potassium, Dissolved Selenium,bissolved Silver, Dissolved Sodium,Dissolved Ammonia Nitrogen Arsenic, Dissolved Barium, Dissolved Cadmium, Dissolved Calcium, Dissolved Chromium, Dissolved Copper, Dissolved Iron, Dissolved Lead, Dissolved Magnesium, Dissolved Manganese, Dissolved Potassium, Dissolved Selenium, Dissolved Silver, Dissolved Sodium, Dissolved Specific Conductance Benzene Ethylbenzene Methyl tert-butyl ether Toluene Total Xylene Ammonia Nitrogen Methane < 1 mg/1 06/02/07 10:24 WG303195 c 1 mg/1 06/02/07 10:24 WG303195 < .1 mg/1 06/02/07 10:24 WG303195 < .1 mg/1 06/02/07 10:24 WG303195 < .1 mg/1 06/02/07 10:24 WG303195 < 5 mg/1 06/02/07 10:24 WG303195 < 1 mg/1 06/05/07 10:22 WG303211 6.90 su 06/02/07 14:30 WG303213 < .1 mg/1 06/05/07 02:40 WG303289 < 10 mg/1 06/04/07 10:09 WG303337 < .05 mg/1 06/04/07 18:20 WG303338 < .02 mg/1 06/07/07 00:07 WG303433 < .005 mg/1 06/07/07 00:07 WG303433 c .005 169/1 06/07/07 00:07 WG303433 < .5 mg/1 06/07/07 00:07 WG303433 < .01 mg/1 06/07/07 00:07 WG303433 < .02 mg/1 06/07/07 00:07 WG303433 < .1 mg/1 06/07/07 00:07 WG303433 < .005 mg/1 06/07/07 14:19 WG303433 < .1 mg/1 06/07/07 00:07 WG303433 < .01 mg/1 06/07/07 00:07 WG303433 < .5 m9/1 06/07/07 00:07 WG303433 < .02 mg/1 06/07/07 00:07 WG303433 < .01 mg/1 06/07/07 00:07 WG303433 < .5 mg/1 06/07/07 00:07 W0303433 < .1 mg/1 06/06/07 03:34 W0303455 < .02 mg/1 06/05/07 20:52 WG303484 < .005 mg/1 06/05/07 20:52 W0303484 < .005 mg/1 06/05/07 20:52 WG303484 < .5 mg/1 06/05/07 20:52 W0303484 < .01 mg/1 06/05/07 20:52 WG303484 < .02 mg/1 06/05/07 20:52 WG303484 < .1 mg/1 06/05/07 20:52 WG303484 < .005 mg/1 06/05/07 20:52 WG303484 < .1 mg/1 06/05/07 20:52 WG303484 < .01 mg/1 06/05/07 20:52 WG303484 < .5 mg/1 06/05/07 20:52 W0303484 < .02 mg/1 06/05/07 20:52 W0303484 < .01 mg/1 06/05/07 20:52 WG303484 < .5 mg/1 06/05/07 20:52 WG303484 0.610 umhos/cm 06/06/07 05:00 WG303510 < .0005 m9/1 06/06/07 11:28 WG303752 < .0005 mg/1 06/06/07 11:28 WG303752 < .005 mg/1 06/06/07 11:28 WG303752 < .005 mg/1 06/06/07 11:28 WG303752 < .0015 mg/1 06/06/07 11:28 WG303752 < .1 mg/1 06/07/07 02:47 WG303873 < .01 ppm 06/07/07 14:47 WG304024 Page 21 of 27 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level II Grand Junction, CO 81505 June 05, 2007 L296053 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Analyte Duplicate Units Result Duplicate RPD Limit Ref Samp Batch Bromide mg/1 0.00 0.00 0.00 20 L296053-01 WG303195 Bromide mg/1 0.00 0.00 0.00 20 L296053-07 WG303195 Chloride mg/1 25.2 25.0 0.797 20 L296053-01 WG303195 Chloride mg/1 32.1 32.0 0.312 20 L296053-07 WG303195 Fluoride mg/1 0.325 0.330 1.53 20 L296053-01 WG303195 Fluoride mg/1 0.481 0.470 2.31 20 L296053-07 WG303195 Nitrate mg/1 1.48 1.50 1.34 20 L296053-01 W0303195 Nitrate mg/1 1.10 1.10 0.00 20 L296053-07 WG303195 Nitrite mg/1 0.00 0.00 0.00 20 L296053-01 WG303195 Nitrite mg/1 0.00 0.00 0.00 20 L296053-07 WG303195 Sulfate mg/1 86.3 86.0 0.348 20 L296053-01 WG303195 Sulfate mg/1 128. 130. 1.55 20 L296053-07 WG303195 Dissolved Solids mg/1 1170 1200 2.96 20 L296048-01 W0303211 pH su 8.30 8.30 0.00 20 L296053-04 WG303213 Ammonia Nitrogen mg/1 0.00 0.00 0.00 20 L295856-19 WG303289 Ammonia Nitrogen mg/1 0.00 0.00 0.00 20 L295969-01 WG303289 Alkalinity Alkalinity mg/1 73.7 68.0 8.05 20 L295946-01 WG303337 mg/1 321. 320. 0.312 20 L295764-05 WG303337 Sulfide mg/1 0.00 0.00 0.00 20 L295856-01 WG303338 Sulfide m9/1 0.00 0.00 0.00 20 L296060-05 WG303338 Arsenic,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Barium,Dissolved mg/1 0.0760 0.0770 1.31 20 L296053-07 WG303433 Cadmium,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Calcium,Dissolved mg/1 56.1 56.0 0.178 20 L296053-07 WG303433 Chromium,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Copper,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Iron,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Lead,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Magnesium,Dissolved mg/1 42.6 42.0 1.42 20 L296053-07 WG303433 Manganese,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Potassium,Dissolved mg/1 2.86 2.90 1.39 20 L296053-07 WG303433 Selenium,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Silver,Dissolved mg/1 0.00 0.00 0.00 20 L296053-07 WG303433 Sodium,Dissolved mg/1 85.2 87.0 2.09 20 L296053-07 WG303433 Ammonia Nitrogen mg/1 0.00 0.00 0.00 20 L295204-02 WG303455 Arsenic,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 WG303484 Barium,Dissolved mg/1 0.0727 0.0720 0.968 20 L296053-16 WG303484 Cadmium,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 WG303484 Calcium,Dissolved mg/1 46.1 47.0 2.31 20 L296053-16 W0303484 Chromium,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 WG303484 Copper,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 W0303484 Iron,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 WG303484 Lead,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 110303484 Magnesium,Dissolved mg/i 36.2 36.0 0.554 20 L296053-16 WG303484 Manganese,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 WG303484 Potassium,Dissolved mg/1 2.57 2.50 2.76 20 L296053-16 WG303484 Selenium,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 WG303484 Silver,Dissolved mg/1 0.00 0.00 0.00 20 L296053-16 W0303484 Sodium,Dissolved mg/1 57.0 57.0 0.00 20 L296053-16 W0303484 Specific Conductance Specific Conductance umhos 778. 780. 0.257 20 L295856-01 WG303510 umhos 754. 750. 0.532 20 L296053-16 WG303510 Page 22 of 27 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level II Grand Junction, CO 81505 June 08, 2007 L296053 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5659 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Analyte Ammonia Nitrogen Ammonia Nitrogen Duplicate Units Result Duplicate RPD Limit Ref Samp Batch mg/1 0.00 mg/1 0.00 0.00 0.00 0.00 0.00 20 L296644-02 WG303873 20 L296053-13 WG303873 Analyte Laboratory Control Sample Units Known Val Result % Rec Limit Batch Bromide mg/1 40 36.5 91.3 90-110 WG303195 Chloride mg/1 40 36.8 92.0 90-110 WG303195 Fluoride mg/1 8 7.88 98.5 90-110 WG303195 Nitrate mg/1 8 8.63 108. 90-110 WG303195 Nitrite mg/1 8 8.29 104. 90-110 WG303195 Sulfate mg/1 40 37.4 93.5 90-110 WG303195 Dissolved Solids mg/1 8800 8590 97.6 85-115 WG303211 pH su 8.25 8.10 98.2 85-115 WG303213 Ammonia Nitrogen mg/1 7.5 7.50 100. 85-115 WG303289 Alkalinity mg/1 40 41.0 103. 85-115 WG303337 Sulfide mg/1 .5 0.494 98.8 90-110 WG303338 Arsenic,Dissolved mg/1 1.13 1.02 90.3 85-115 WG303433 Barium,Dissolved mg/1 1.13 1.10 97.3 85-115 WG303433 Cadmium,Dissolved mg/1 1.13 1.10 97.3 85-115 WG303433 Calcium,Dissolved mg/1 11.3 11.0 97.3 85-115 WG303433 Chromium,Dissolved mg/1 1.13 1.06 93.8 85-115 WG303433 Copper,Dissolved mg/1 1.13 1.11 98.2 85-115 WG303433 Iron,Dissolved mg/1 1.13 1.10 97.3 85-115 WG303433 Lead,Dissolved mg/1 1.13 1.04 92.0 85-115 WG303433 Magnesium,Dissolved mg/1 11.3 10.6 93.8 85-115 WG303433 Manganese,Dissolved mg/1 1.13 1.07 94.7 85-115 WG303433 Potassium,Dissolved mg/1 11.3 11.0 97.3 85-115 WG303433 Selenium,Dissolved mg/1 1.13 0.968 65.7 85-115 WG303433 Silver,Dissolved mg/1 1.13 0.965 85.4 85-115 WG303433 Sodium,Dissolved mg/1 11.3 11.2 99.1 85-115 W13303433 Ammonia Nitrogen mg/1 7.5 7.36 98.1 85-115 WG303455 Arsenic,Dissolved mg/1 1.13 1.15 102. 85-115 WG303484 Barium,Dissolved mg/1 1,13 1.18 104. 85-115 WG303484 Cadmium,Dissolved mg/1 1.13 1.20 106. 85-115 WG303484 Calcium,Dissolved mg/1 11.3 11.5 102. 85-115 WG303484 Chromium,Dissolved mg/1 1.13 1.13 100. 85-115 WG303484 Copper,Dissolved mg/1 1.13 1.16 103. 85-115 WG303484 Iron,Dissolved mg/1 1.13 1.16 103. 85-115 WG303484 Lead,Dissolved mg/1 1.13 1.15 102. 85-115 WG303484 Magnesium,Dissolved mg/1 11.3 11.3 100. 85-115 W12303484 Manganese,Dissolved mg/1 1.13 1.13 100. 85-115 WG303484 Potassium,Dissolved mg/1 11.3 11.0 97.3 85-115 WG303484 Selenium,Dissolved mg/1 1.13 1.11 98.2 65-115 WG303484 Silver,Dissolved mg/1 1.13 1.11 98.2 85-115 WG303484 Sodium,Dissolved mg/1 11.3 10.6 93.8 85-115 WG303484 Specific Conductance umhos/cm 559 570. 102. 85-115 WG303510 Benzene mg/1 .05 0.0441 88.3 79-131 WG303752 Ethylbenzene mg/1 .05 0.0465 93.0 68-125 WG303752 Page 23 of 27 ENVIRONMENTAL SCIENCE CORP. Cordilleran Compliance - GJ, CO Scotty Mann 626 21 1/2 Road Grand Junction, CO 81505 Methyl tert-butyl ether Analyte Toluene Total Xylene Ammonia Nitrogen Methane Quality Assurance Report Level II L296053 mg/1 .05 0.0485 Laboratory Control Sample Units Known Val Result 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Eat. 1970 June 08, 2007 97.0 60-133 WG303752 Analyte % Rec Limit Batch mg/1 .050.0440 88.0 68-114 WG303752 mg/1 .15 0.136 90.4 72-113 WG303752 mg/1 7.5 7.50 100. 85-115 WG303873 ppm1000 900. 90.0 56-121 WG304024 Laboratory Control Sample Duplicate Units LCSD Res Ref Res RPD Limit %Rec Batch Bromide Chloride Fluoride Nitrate Nitrite Sulfate Dissolved Solids pH Ammonia Nitrogen Alkalinity Sulfide Ammonia Nitrogen Specific Conductance Benzene Ethylbenzene Methyl tert-butyl ether Toluene Total Xylene Ammonia Nitrogen Methane mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 Analyte Bromide Chloride Fluoride Nitrate Nitrite Sulfate su mg/1 mg/1 mg/1 mg/1 36.4 36.7 7.88 8.61 8.28 37.4 36.5 36.8 7.88 8.63 8.29 37.4 8540 8590 8.10 8.10 7.72 7.50 40.7 41.0 0.496 0.494 7.12 7.36 umhos 570. 570. mg/1 0.0475 mg/1 0.0505 mg/1 0.0509 mg/1 0.0473 mg/1 0.147 mg/1 7.29 0.0441 0.0465 0.0485 0.0440 0.136 0.274 0.272 0.00 0.232 0.121 0.00 0.607 0.00 2.89 0.734 0.404 3.31 0.00 7.37 8.16 4.81 7.31 7.88 7.50 2.84 ppm 1000 900. 10.5 Matrix Spike Units MS Res Ref Res TV % Rec Limit Ref Samp Batch 20 20 20 20 20 20 91 92 99 106 104 94 WG303195 WG303195 WG303195 WG303195 WG303195 WG303195 20 97 WG303211 20 98 WG303213 20 103 WG303289 20 102 WG303337 20 99 WG303338 20 95 WG303455 20 102 WG303510 20 95 WG303752 20 101 WG303752 20 102 W0303752 20 95 WG303752 20 96 W0303752 20 97 WG303873 20 100 WG304024 Ammonia Nitrogen Alkalinity Sulfide Arsenic, Dissolved Barium, Dissolved mg/1 46.6 0.00 mg/1 67.7 20.0 mg/1 5.37 0.350 mg/1 6.08 1.40 mg/1 4.40 0.00 mg/1 115. 66.0 mg/1 5.22 0.00 mg/1 496. mg/1 1.13 mg/1 1.03 mg/1 1.16 50 93.2 80-120 50 95.4 80-120 5 100. 80-120 5 93.6 80-120 5 88.0 80-120 50 98.0 80-120 5 104. 80-120 400. 200 46.0 80-120 0.00 1 113. 90-110 0.00 1.13 91.2 75-125 0.0770 1.13 95.8 75-125 Page 24 of 27 L296053-04 WG303195 L296053-04 W0303195 L296053-04 W0303195 L296053-04 WG303195 L296053-04 W0303195 L296053-04 WG303195 L296053-04 WG303289 L295764-04 W0303337 L295856-04 W0303338 L296053-07 WG303433 L296053-07 W0303433 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Grand Junction, CO 81505 Cadmium, Dissolved Analyte Calcium, Dissolved Chromium, Dissolved Copper, Dissolved Iron,Dissolved Lead, Dissolved Magnesium, Dissolved Manganese, Dissolved Potassium, Dissolved Selenium, Dissolved Silver,Dissolved Sodium, Dissolved Ammonia Nitrogen Arsenic, Dissolved Barium, Dissolved Cadmium, Dissolved Calcium, Dissolved Chromium, Dissolved Copper, Dissolved Iron, Dissolved Lead, Dissolved Magnesium, Dissolved Manganese, Dissolved Potassium, Dissolved Selenium, Dissolved Silver,Dissolved Sodium, Dissolved Benzene Ethylbenzene Methyl tert-butyl ether Toluene Total Xylene Ammonia Nitrogen Quality Assurance Report Level I1 L296053 mg/1 1.09 0.00 1.13 Matrix Spike Units MS Res Ref Res TV 12065 Lebanon Rd. Mt. Juliet, TN 37122 {615} 758-5858 1-800-767-5859 Fax (615} 758-5859 Tax I.D. 62-0814289 Est. 1970 June 08, 2007 96.5 75-125 L296053-07 WG303433 % Rec Limit Ref Samp Batch Analyte Bromide Chloride Fluoride Nitrate Nitrite Sulfate mg/1 66.1 56.0 11.3 mg/1 1.04 0.00 1.13 mg/1 1.10 0.00 1.13 mg/1 1.07 0.00 1.13 mg/1 1.04 0.00 1.13 mg/1 52.7 42.0 11.3 mg/1 1.06 0.00 1.13 mg/1 13.1 2.90 11.3 mg/1 0.977 0.00 1.13 mg/1 0.0783 0.00 1.13 mg/1 94.5 87.0 11.3 mg/1 5.20 0.00 5 mg/1 1.14 0.00 1.13 mg/1 1.20 0.0720 1.13 mg/1 1.14 0.00 1.13 mg/1 58.9 47.0 11.3 mg/1 1.10 0.00 1.13 mg/1 1.13 0.00 1.13 mg/1 1.12 0.00 1.13 mg/1 1.12 0.00 1.13 mg/1 46.8 36.0 11.3 mg/1 1.10 0.00 1.13 mg/1 13.1 2.50 11.3 mg/1 1.08 0.00 1.13 mg/1 0.537 0.00 1.13 mg/1 66.5 57.0 11.3 mg/1 0.0449 0.00 .05 mg/1 0.0468 0.00 .05 mg/1 0.0479 0.00 .05 mg/1 0.0505 0.00 .05 mg/1 0.144 0.00 .15 mg/1 7.48 2.20 5 Matrix Spike Duplicate Units MSD Res Ref Res RPD 89.4 92.0 97.3 94.7 92.0 94.7 93.8 90.3 86 .5 6.9 66.4 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 104. 80-120 101. 99.8 101. 105. 97.3 100. 99.1 99.1 95.6 97.3 93.8 95.6 47.5 84.1 89.8 93.6 95.7 101. 96.1 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 75-125 68-135 61-122 54-137 60-116 62-112 106. 80-120 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L295204-01 L296053-16 L296053-16 L296053-16 L296053-16 L296053-16 L296053-16 L296053-16 L296053-16 L296053-16 L296053-16 L296053-16 L296053--16 L296053-16 L296053-16 L296053-18 L296053-18 L296053-16 L296053-16 L296053-18 WG303433 WG303433 W0303433 WG303433 WG303433 WG303433 WG303433 WG303433 WG303433 WG303433 WG303433 WG303455 WG303484 WG3034.64 WG303484 WG303484 WG303484 WG303484 WG303484 WG303484 WG303484 WG303484 WG303484 WG303484 WG303484 WG303484 WG303752 WG303752 WG303752 WG303752 WG303752 L296225-01 WG303873 Limit %Rec Ref Samp Batch Ammonia Nitrogen Alkalinity Sulfide Arsenic, Dissolved Barium, Dissolved Cadmium,Dissolved Calcium, Dissolved Chromium, Dissolved Copper, Dissolved mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 47.2 68.2 5.45 6.10 4.47 115. 46.6 67.7 5.37 6.08 4.40 115. 5.07 5.22 491. 496. 1.13 1.13 1.05 1.17 1.10 66.3 1.06 1.14 1.03 1.16 1.09 66.1 1.04 1.10 Page 25 of 27 1.28 0.736 1.48 0.328 1.58 0.00 2.92 1.01 0.00 1.92 0.858 0.913 0.302 1.90 3.57 20 94.4 20 96.4 20 102. 20 94.0 20 89.4 20 98.0 20 101. 20 45.5 20 113. 20 92.9 20 96.7 20 97.3 20 91.2 20 93.8 20 101. L296053-04 WG303195 L296053-04 WG303195 L296053-04 WG303195 L296053-04 WG303195 L296053-04 WG303195 L296053-04 WG303195 L296053-04 L295764-04 L295856-04 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 L296053-07 WG303289 WG303337 WG303338 WG303433 WG303433 WG303433 W0303433 WG303433 WG303433 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Grand Junction, CO 81505 Iron, Dissolved Analyte Lead,Dissolved Magnesium, Dissolved Manganese, Dissolved Potassium,Dissolved Selenium, Dissolved Silver, Dissolved Sodium, Dissolved Ammonia Nitrogen 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 756-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Quality Assurance Report Level II June 08, 2007 L296053 mg/1 1.09 1.07 1.85 20 96.5 L296053-07 WG303433 Matrix Spike Duplicate Units MSD Res Ref Res RPD Limit %Rec Ref Samp Batch mg/1 1.07 1.04 2.84 20 94.7 L296053-07 WG303433 mg/1 53.1 52.7 0.756 20 98.2 L296053-07 WG303433 mg/1 1.07 1.06 0.939 20 94.7 L296053-07 WG303433 1119/1 13.4 13.1 2.26 20 92.9 L296053-07 WG303433 mg/1 0.990 0.977 1.32 20 87.6 L296053-07 WG303433 mg/1 0.0719 0.0783 8.52 20 6.36 1296053-07 WC303433 mg/1 97.7 94.5 3.33 20 94.7 L296053-07 WG303433 mg/1 5.05 5.20 2.93 20 101. L295204-01 WG303455 Arsenic,Dissolved mg/1 1.11 1.14 2.67 20 98.2 L296053-16 WG303484 Barium,Dissolved mg/1 1.19 1.20 0.837 20 98.9 L296053-16 WG303484 Cadmium,Dissolved mg/1 1.14 1.14 0.00 20 101. L296053-16 WG303484 Calcium,Dissolved mg/1 59.2 58.9 0.508 20 108. L296053-16 WG303484 Chromium,Dissolved mg/1 1.07 1.10 2.76 20 94.7 L296053-16 W0303484 Copper,Dissolved mg/1 1.12 1.13 0.889 20 99.1 L296053-16 WG303484 Iron,Dissolved mg/1 1.11 1.12 0.897 20 98.2 L296053-16 WG303484 Lead,Dissolved mg/1 1.10 1.12 1.80 20 97.3 L296053-16 WG303484 Magnesium,Dissolved mg/1 47.0 46.8 0.426 20 97.3 L296053-16 WG303484 Manganese,Dissolved mg/1 1.10 1.10 0.00 20 97.3 L296053-16 WG303484 Potassium,Dissolved mg/1 13.6 13.1 3.75 20 98.2 L296053-16 WG303484 Selenium,Dissolved mg/1 1.06 1.08 1.87 20 93.8 L296053-16 WG303484 Silver,Dissolved mg/1 0.323 0.537 49.8 20 28.6 L296053-16 WG303484 Sodium,Dissolved mg/1 68,4 66.5 2.82 20 101. L296053-16 9)0303484 Benzene 189/1 0.0435 0.0449 3.14 20 87.1 L296053-18 WG303752 Ethylbenzene mg/1 0.0463 0.0468 1.01 20 92.7 L296053-18 WG303752 Methyl tert-butyl ether mg/1 0.0482 0.0479 0.709 20 96.4 L296053-18 WG303752 Toluene mg/1 0.0467 0.0505 7.85 20 93.3 L296053-18 WG303752 Total Xylene mg/1 0.138 0.144 4.69 20 91.7 L296053-18 WG303752 Ammonia Nitrogen mg/1 7.48 7.48 0.00 20 106. L296225-01 W0303873 Batch number /Run number / Sample number cross reference WG303213: R320648: L296053-01 04 07 10 13 16 W0303337: R320684: L296053-02 05 08 11 14 17 WG303338: R320791: L296053-01 04 07 10 13 16 W0303195: R320839: L296053-01 04 07 10 13 16 WG303211: R320865: L296053-01 04 07 10 13 16 WG303289: R320930: L296053-01 04 W0303510: R320986: L296053-01 04 07 10 13 16 W0303484: R321007: L296053-10 13 16 WG303455: R321094: L296053-07 10 16 WG303752: R321218: L296053-03 06 09 12 15 18 W0303433: R321250: L296053-01 04 07 WG303873: R321261: L296053-13 WG304024: R321393: L296053-01 04 07 10 13 16 * * Calculations are performed prior to rounding of reported values . Page 26 of 27 at ENVIRONMENTAL SCIENCE CORP. Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level II Grand Junction, CO 81505 June 08, 2007 L296053 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 The data package includes a summary of the analytic results of the quality control samples required by the SW -846 or CWA methods. The quality control samples include a method blank, a laboratory control sample, and the matrix spike/matrix spike duplicate analysis. If a target parameter is outside the method limits, every sample that is effected is flagged with the appropriate qualifier in Appendix B of the analytic report. Method Blank - an aliquot of reagent water carried through the entire analytic process. The method blank results indicate if any possible contamination exposure during the sample handling, digestion or extraction process, and analysis. Concentrations of target analytes above the reporting limit in the method blank are qualified with the "B" qualifier. Laboratory Control Sample - is a sample of known concentration that is carried through the digestion/extraction and analysis process. The percent recovery, expressed as a percentage of the theoretical concentration, has statistical control limits indicating that the analytic process is "in control". If a target analyte is outside the control limits for the laboratory control sample or any other control sample, the parameter is flagged with a "J4" qualifier for all effected samples. Matrix Spike and Matrix Spike Duplicate - is two aliquots of an environmental sample that is spiked with known concentrations of target analytes. The percent recovery of the target analytes also has statistical control limits. If any recoveries that are outside the method control limits, the sample that was selected for matrix spike/matrix spike duplicate analysis is flagged with either a "J5" or a "J6". The relative percent difference (%RPD) between the matrix spike and the matrix spike duplicate recoveries is all calculated. If the RPD is above the method limit, the effected samples are flagged with a "J3" qualifier. Page 27 of 27 ENVIRONMENTAL SCIENCE CORP. Scotty Mann Cordilleran Compliance - GS, CO 826 21 1/2 Road Grand Junction, CO 81505 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Report Summary Thursday June 14, 2007 Report Number: L297105 Samples Received: 06/09/07 Client Project: E04250 Description: N Parachute The analytical results in this report are based upon information supplied by you, the client, and are for your exclusive use.Xou have any questions regarding this data package, please do ngk sitate to call. Rose, ESC Representative Entire Report Reviewed By: Laboratory Certification Numbers A2LA - 1461-01, AIHA - 09227, AL - 40660, CA - I-2327, CT - PH -0197, FL - E87487 GA - 923, IN - C -TN -01, KY - 90010, KYUST - 0016, NC - ENV375,DW21704, ND - R-140 NJ - TN002, SC - 84004, TN - 2006, VA - 00109, WV - 233 AZ - 0612, MN - 047-999-395, NY - 11742, WI - 998093910 This report may not he reproduced, except in full, without written approval from Environmental Science Corp. 3 Samples Reported: 06/14/07 16:41 Printed: 06/14/07 18:04 ENVIRONMENTAL SCIENCE CORP . Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 Date Received Description Sample ID Collected By . Collection Date : Parameter Methane Bromide Chloride Fluoride Nitrate Nitrite Sulfate June 09, 2007 Parachute 060807-MFP SM 06/08/07 07:30 REPORT OF ANALYSIS 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5$58 1-800-767-5859 Fax (615) 758-5859 Tax 1.d. 62-0814289 Est. 1970 June 14, 2007 ESC Sample # : L297105-01 Site ID Project # 804250 Result Det. Limit Units Method Date Dil. Ammonia Nitrogen pH Specific Conductance Sulfide Dissolved Solids Arsenic, Dissolved Barium, Dissolved Cadmium, Dissolved Calcium, Dissolved Chromium, Dissolved Copper, Dissolved Iron, Dissolved Lead, Dissolved Magnesium, Dissolved Manganese, Dissolved Potassium, Dissolved Selenium, Dissolved Silver, Dissolved Sodium, Dissolved 0.098 0.010 ppm 3810/858175 06/14/07 1 120 10. mg/1 9056 06/13/07 10 7800 50. mg/1 9056 06/13/07 50 1.6 1.0 mg/1 9056 06/13/07 10 BDL 1.0 mg/1 9056 06/13/07 10 BDL 1.0 mg/1 9056 06/13/07 10 BDL 5.0 mg/1 9056 06/10/07 1 15. 0.10 mg/1 350.1 06/13/07 1 7.0 su 9040A 06/12/07 1 25000 umhos/cm 9050A 06/13/07 1 0.17 0.050 mg/1 376.2 06/11/07 1 15000 1.0 mg/1 160.1 06/14/07 1 BDL 0.020 mg/1 60109 06/13/07 1 38. 0.0050 mg/1 6010E 06/13/07 1 BDL 0.0050 mg/1 6010B 06/13/07 1 280 0.50 mg/1 60100 06/13/07 1 BDL 0.010 mg/1 60108 06/13/07 1 0.039 0.020 mg/1 60109 06/13/07 1 51. 0.10 mg/1 6010B 06/13/07 1 0.028 0.0050 mg/1 60103 06/13/07 1 22. 0.10 mg/1 60109 06/13/07 1 1.2 0.010 mg/1 60100 06/13/07 1 160 0.50 mg/1 60108 06/13/07 1 BDL 0.020 mg/1 60108 06/13/07 1 0.011 0.010 mg/1 6010E 06/13/07 1 4700 2.5 mg/1 6010B 06/14/07 5 BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/14/07 16:41 Printed: 06/14/07 18:06 Page 1 of 11 ENVIRONMENTAL SCIENCE CORP . Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Read Grand Junction, CO 81505 Date Received June 09, 2007 Description Parachute Sample ID 060807-MFP Collected By SM Collection Date : 06/08/07 07:30 Parameter REPORT OF ANALYSIS 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1 B00-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814269 Eat. 1970 June 14,2007 ESC Sample # : L297105-02 Site ID . Project # : E04250 Result Det. Limit Units Method Date Dil. Alkalinity 930 100 mg/1 310.2 06/11/07 10 Alkalinity,Bicarbonate 930 10. mg/1 310.2 06/11/07 1 Alkalinity,Carbonate BDL 10. mg/1 310.2 06/11/07 1 BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/14/07 16:41 Printed: 06/14/07 18:06 Page 2 of 11 x ENVIRONMENTAL SCIENCE CORP . REPORT OF ANALYSIS Scotty Mann Cordilleran Compliance - GJ, CO 826 21 1/2 Road Grand Junction, CO 81505 12065 Lebanon Ad. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.P. 62-0814289 Est. 1970 June 14,2007 ESC Sample # : L297105-03 Date Received June 09, 2007 Description Parachute Site ID : Sample ID 060807-MFP Project # : E04250 Collected By SM Collection Date : 06/08/07 07:30 Parameter Result Det. Limit Units Method Date Dil. Benzene 2800 50. ug/1 8021/8015 06/13/07 100 Toluene 5000 500 ug/1 6021/8015 06/13/07 100 Ethylbenzene 110 50. ug/1 8021/8015 06/13/07 100 Total Xylene 3600 150 ug/1 8021/8015 06/13/07 100 Methyl tert-butyl ether BDL 100 ug/1 8021/8015 06/13/07 100 Surrogate Recovery (70-130) a,a,a-Trifluorotoluene(FID) 0.00 ' Rec. 8021/8015 06/13/07 100 a,a,a-TrifluorotOluene(PID) 110. % Rec. 8021/8015 06/13/07 10D BDL - Below Detection Limit Det. Limit - Practical Quantitation Limit(PQL) Note: The reported analytical results relate only to the sample submitted. This report shall not be reproduced, except in full, without the written approval from ESC. Reported: 06/14/07 16:41 Printed: 06/14/07 18:06 Page 3 of 11 Sample # L297105-01 L297105-03 Attachment A List of Analytes with QC Qualifiers Analyte Qualifier pH TB Nitrate 0 Nitrite 0 a,a,a-Trifluoroto1uene(FID) J2 Page 4 of 11 Attachment B Explanation of QC Qualifier Codes Qualifier Meaning J2 Surrogate recovery limits have been exceeded; values are outside lower control limits 0 (ESC) Sample diluted due to matrix interferences that impaired the ability to make an accurate analytical determination. The detection limit is elevated in order to reflect the necessary dilution. TB {ESC) - Additional method/sample information: Sample(s) received past/too close to holding time expiration. Qualifier Report Information ESC utilizes sample and result qualifiers as set forth by the EPA Contract Laboratory Program and as required by most certifying bodies including NELAC. In addition to the EPA qualifiers adopted by ESC, we have implemented ESC qualifiers to provide more information pertaining to our analytical results. Each qualifier is designated in the qualifier explanation as either EPA or ESC. Data qualifiers are intended to provide the ESC client with more detailed information concerning the potential bias of reported data. Because of the wide range of constituents and variety of matrices incorporated by most EPA methods,it is common for some compounds to fall outside of established ranges. These exceptions are evaluated and all reported data is valid and useable unless qualified as 'R' (Rejected). Definitions Accuracy - The relationship of the observed value of a known sample to the true value of a known sample. Represented by percent recovery and relevant to samples such as: control samples, matrix spike recoveries, surrogate recoveries, etc. Precision - The agreement between a set of samples or between duplicate samples. Relates to how close together the results are and is represented by Relative Percent Differrence. Surrogate - Organic compounds that are similar in chemical composition, extraction, and chromotography to analytes of interest. The surrogates are used to determine the probable response of the group of analytes that are chem- ically related to the surrogate compound. Surrogates are added to the sample and carried through all stages of preparation and analyses. Control Limits (AQ) {ss) 2-Fluorophenol 31-119 Nitrobenzene -d5 43-118 Dibromfluoromethane 68-128 64-125 Phenol -d5 12-134 2-Fluorobiphenyl 45-128 Toluene -d8 76-115 69-118 2,4,6-Tribromophenol 51-141 Terphenyl-d14 43-137 4-Bromofluorobenzene 79-127 61-134 TIC - Tentatively Identified Compound: Compounds detected in samples that are not target compounds, internal standards, system monitoring compounds, or surrogates. Page 5 of 11 Summary of Remarks For Samples Printed 06/14/07 at 18:06:11 TSR Signing Reports: 151 R5 - Desired TAT cb-1/05;Run ALKs on separate dash, 1 day TAT, R3 priority; Client sends unpreserved vials for all projects; Run BTEXM on separate dash Sample: L297105-01 Account: CORCOMGCO Received: 06/09/07 09:00 Due Date: 06/14/07 00:00 RPT Date: 06/14/07 16:41 Changed due date to 4/14 per JR. AV 6/12 Dissolved Metals Field Filtered. total -$479; Changed loginnum from L297124-10 per JRose-cb 6/14/07 Sample: L297105-02 Account: CORCOMGCO Received: 06/09/07 09:00 Due Date: 06/14/07 00:00 RPT Date: 06/14/07 16:41 Changed loginnum from L297124-11 per JRose-cb 6/14/07 Sample: L297105-03 Account: CORCOMGCO Received: 06/09/07 09:00 Due Date: 06/14/07 00:00 RPT Date: 06/14/07 16:41 Report BTEXM; Changed loginnum from L297124-12 per JRose-cb 6/14/07 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Grand Junction, CO 81505 Quality Assurance Report Level II L297105 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 June 14, 2007 Analyte Result Laboratory Blank Units Date Analyzed Batch Sulfate Sulfide Alkalinity Specific Conductance pH Arsenic, Dissolved Barium, Dissolved Cadmium, Dissolved Calcium, Dissolved Chromium, Dissolved Copper, Dissolved Iron, Dissolved Lead, Dissolved Magnesium, Dissolved Manganese, Dissolved Potassium, Dissolved Selenium, Dissolved Silver, Dissolved Sodium, Dissolved Dissolved Solids Ammonia Nitrogen Bromide Chloride Fluoride Nitrate Nitrite Benzene Ethylbenzene Methyl tert-butyl ether Toluene Total Xylene Methane < 5 < .05 < 10 0.590 0.00 mg/1 mg/1 mg/1 umbos/cm su < .02 mg/1 c .005 mg/1 < .005 mg/1 < .5 mg/1 < .01 mg/1 < .02 mg/1 < .1 mg/1 < .005 mg/1 < .1 mg/1 < .01 mg/1 < .5 mg/1 < .02 mg/1 < .01 mg/1 < .5 mg/1 < 1 mg/1 < .1 mg/1 c 1 mg/1 < 1 mg/1 < .1 mg/1 < .1 mg/1 < .1 mg/1 < .0005 mg/I < .0005 mg/1 c .005 mg/1 < .005 mg/1 < .0015 mg/1 06/10/07 06/11/07 06/11/07 06/13/07 01:14 15:26 09:55 06:00 06/12/07 08:57 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/13/07 19:56 06/14/07 02:42 06/14/07 10:25 06/13/07 02:16 06/13/07 01:32 06/13/07 01:32 06/13/07 01:32 06/13/07 01:32 06/13/07 01:32 06/13/07 04:55 06/13/07 04:55 06/13/07 04:55 06/13/07 04:55 06/13/07 04:55 < .01 ppm 06/14/07 09:55 WG304271 WG304347 W0304419 WG304588 WG304599 W0304609 WG304609 WG304609 WG304609 WG304609 WG304609 WG304609 WG304609 WG304609 WG304609 WG304609 WG304609 WG304609 W0304609 WG304678 WG304734 WG304757 WG304757 WG304757 WG304757 WG304757 WG304781 W0304781 WG304781 W0304781 WG304781 W0305054 Analyte Sulfate Sulfate Sulfide Sulfide Alkalinity Alkalinity Specific Conductance pH Arsenic, Dissolved Duplicate Units Result Duplicate RPD Limit mg/1 0.00 0.725 NA 20 mg/1 34.9 35.0 0,286 20 mg/1 0.00 0.00 0.00 20 mg/1 0.00 0.00 0.00 20 mg/1 25.8 27.0 4.55 20 mg/1 280. 280. 0.00 20 umbos 3950 4000 1.26 20 su 7.10 7.10 0.00 20 mg/1 0.00 0.00 0.00 20 Page 6 of 11 Ref Samp Batch L296928-02 L296928-03 L297124-07 L296442-01 L297012-02 L297039-05 L296455-01 L297072-07 L297196-02 WG304271 W0304271 WG304347 WG304347 WG304419 WG304419 WG304588 WG304599 WG304609 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level II Grand Junction, CO 81505 June 14, 2007 L297105 Barium,Dissolved mg/1 0.0643 0.0630 2.04 20 L297196-02 WG304609 Duplicate Analyte Units Result Duplicate RPD Limit Ref Samp Batch Cadmium,Dissolved mg/1 0.00 0.00 0.00 20 L297196-02 WG304609 Calcium,Dissolved mg/1 273. 263. 3.73 20 L297196-02 WG304609 Chromium,Dissolved mg/1 0.00 0.00 0.00 20 L297196-02 WG304609 Copper,Dissolved mg/1 0.00 0.0152 NA 20 L297196-02 WG304609 Iron,Dissolved mg/1 0.641 0.621 3.17 20 L297196-02 WG304609 Lead,Dissolved mg/1 0.00 0.00 0.00 20 L297196-02 WG304609 Magnesium,Dissolved mg/1 49.2 48.4 1.64 20 L297196-02 WG304609 Potassium,Dissolved mg/1 15.0 14.5 3.39 20 L297196-02 WG304609 Selenium,Dissolved mg/1 0.00 0.00 0.00 20 L297196-02 WG304609 Silver,Dissolved mg/1 0.0114 0.00 NA 20 L297196-02 WG304609 Sodium,Dissolved mg/1 170. 0.00 NA 20 L297196-02 WG304609 Dissolved Solids mg/1 286. 300. 4.69 20 L297124-01 WG304678 Ammonia Nitrogen mg/1 16.0 16.0 0.00 20 L297267-02 WG304734 Ammonia Nitrogen mg/1 0.00 0.00 0.00 20 L297012-01 WG304734 Bromide mg/1 0.00 0.00 0.00 20 1297386-01 W0304757 Bromide mg/1 0.00 0.00 0.00 20 1297410-03 WG304757 Chloride mg/1 51.9 51.8 0.193 20 1297386-01 WG304757 Chloride mg/1 26.4 26.4 0.00 20 L297410-03 WG304757 Fluoride mg/1 0.232 0.237 2.13 20 L297386-01 WG304757 Fluoride mg/1 0.256 0.248 3.17 20 L297410-03 WG304757 Nitrate mg/1 0.00 0.00 0.00 20 1297386-01 WG304757 Nitrate mg/1 0.768 0.770 0.260 20 1297410-03 WG304757 Nitrite 109/1 0.00 0.00 0.00 20 1297386-01 WG304757 Nitrite 189/1 0.00 0.00 0.00 20 1297410-03 WG304757 Laboratory Control Sample Analyte Unita Known Val Result % Rec Limit Batch Sulfate mg/1 40 38.4 96.0 90-110 WG304271 Sulfide mg/1 .5 0.504 101. 90-110 W0304347 Alkalinity mg/1 40 43.1 108. 85-115 WG304419 Specific Conductance umhos/cm 559 570. 102. 85-115 WG304588 pH su 8.25 8.10 98.2 85-115 WG304599 Arsenic,Dissolved mg/1 1.13 1.15 102. 85-115 WG304609 Barium,Dissolved mg/1 1.13 1.18 104. 85-115 WG304609 Cadmium,Dissolved mg/1 1.13 1.16 103. 85-115 W0304609 Calcium,Dissolved mg/1 11.3 11.8 104. 85-115 WG304609 Chromium,Dissolved mg/1 1.13 1.13 100. 85-115 W0304609 Copper,Dissolved mg/1 1.13 1.20 106. 85-115 WG304609 Iron,Dissolved mg/1 1.13 1.10 97.3 85-115 WG304609 Lead,Dissolved mg/1 1.13 1.21 107. 85-115 WG304609 Magnesium,Dissolved mg/1 11.3 11.8 104. 85-115 WG304609 Manganese,Dissolved mg/1 1.13 1.16 103. 85-115 W0304609 Potassium,Dissolved mg/1 11.3 11.2 99.1 85-115 WG304609 Selenium,Dissolved mg/1 1.13 1.12 99.1 85-115 WG304609 Silver,Dissolved mg/1 1.13 1.10 97.3 85-115 W0304609 Sodium,Dissolved mg/1 11.3 10.8 95.6 85-115 WG304609 Dissolved Solids mg/1 8800 8480 96.4 85-115 WG304678 Ammonia Nitrogen mg/1 7.5 7.92 106. 85-115 WG304734 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-500-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Page 7 of 11 ENVI RONMENTAL SCIENCE CORP. Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level II Grand Junction, CO 81505 June 14, 2007 L297105 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Analyte Laboratory Control Sample Units Known Val Result Rec Limit Batch Bromide mg/1 40 38.8 97.0 90-110 WG304757 Chloride mg/1 40 37.8 94.5 90-110 WG304757 Fluoride mg/1 8 7.88 98.5 90-110 WG304757 Nitrate mg/1 6 8.16 102. 90-110 WG304757 Nitrite mg/1 8 7.72 96.5 90-110 WG304757 Benzene mg/1 .05 0.0478 95.5 79-131 WG304781 Ethylbenzene mg/1 .05 0.0506 101. 68-125 WG304781 Methyl tert-butyl ether mg/1 .05 0.0485 97.1 60-133 WG304781 Toluene mg/1 .05 0.0490 98.0 68-114 WG304781 Total Xylene mg/1 .15 0.155 103. 72-113 WG304781 Methane ppm 1000 860. 86.0 56-121 W0305054 Analyte Laboratory Control Sample Duplicate Units LCSD Res Ref Res RPD Limit %Rec Batch Sulfate mg/1 38.1 36.4 0.784 20 95 WG304271 Sulfide mg/1 0.518 0.504 2.74 20 104 W0304347 Alkalinity mg/1 41.0 43.1 4.99 20 103 WG304419 Specific Conductance umhos 570. 570. 0.00 20 102 WG304588 pH su 8.10 8.10 0.00 20 98 WG304599 Dissolved Solids mg/1 8420 8480 0.663 20 96 WG304678 Ammonia Nitrogen mg/1 7.89 7.92 0.380 20 105 WG304734 Bromide mg/1 36.8 38.8 0.00 20 97 WG304757 Chloride mg/1 38.0 37.8 0.528 20 95 WG304757 Fluoride mg/1 7.93 7.88 0.633 20 99 WG304757 Nitrate mg/1 8.14 8.16 0.245 20 102 WG304757 Nitrite mg/1 7.74 7.72 0.259 20 97 WG304757 Benzene mg/1 0.0477 0.0478 0.178 20 95 WG304781 Ethylbenzene mg/1 0.0503 0.0506 0.574 20 101 WG304781 Methyl tert-butyl ether mg/1 0.0487 0.0485 0.395 20 97 WG304781 Toluene mg/1 0.0491 0.0490 0.211 20 98 WG304781 Total Xylene mg/1 0.154 0.155 0.644 20 103 WG304781 Methane ppm 850. 860. 1.17 20 85 WG305054 Matrix Spike Analyte Units MS Res Ref Res TV % Rec Limit Ref Samp Batch Sulfate mg/1 60.8 0.00 50 122. 80-120 L296928-01 WG304271 Sulfide mg/1 1.02 0.00 1 102. 90-110 L296607-01 W0304347 Alkalinity mg/1 245. 25.0 200 110. 80-120 L297012-01 W0304419 Arsenic,Dissolved mg/1 1.13 0.00 1.13 100. 75-125 L297196-02 WG304609 Barium,Dissolved mg/1 1.16 0.0630 1.13 97.1 75-125 L297196-02 WG304609 Cadmium,Dissolved mg/1 1.10 0.00 1.13 97.3 75-125 L297196-02 W0304609 Calcium,Dissolved mg/1 274. 263. 11.3 97.3 75-125 L297196-02 WG304609 Chromium,Dissolved mg/1 1.06 0.00 1.13 93.8 75-125 L297196-02 WG304609 Page 8 of 11 ENVIRONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Grand Junction, CO 81505 Copper, Dissolved Analyte Iron, Dissolved Lead, Dissolved Magnesium, Dissolved Potassium, Dissolved Selenium, Dissolved Silver, Dissolved Sodium, Dissolved Ammonia Nitrogen Bromide Chloride Fluoride Nitrate Nitrite Benzene Ethylbenzene Methyl tert-butyl ether Toluene Total Xylene Quality Assurance Report Level II L297105 mg/1 1.13 0.0152 1.13 Matrix Spike Units MS Res Ref Res TV 12085 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 June 14, 2007 98.7 75-125 L297196-02 WG304609 % Rec Limit Ref Samp Batch Analyte Sulfate mg/1 1.66 0.621 1.13 mg/1 1.10 0.00 1.13 mg/1 59.7 48.4 11.3 mg/1 25.3 14.5 11.3 mg/1 1.09 0.00 1.13 mg/1 0.103 0.00 1.13 mg/l 180. 0.00 11.3 mg/1 5.38 0.00 5 mg/1 45.9 0.00 50 mg/1 99.8 52.1 50 mg/1 4.81 0.275 5 mg/1 6.27 1.60 5 mg/1 4.82 0.640 5 009/1 0.0471 0.0011 .05 mg/1 0.0535 0.00 .05 mg/1 0.0475 0.0057 .05 mg/1 0.0489 0.00 .05 mg/1 0.150 0.0066 .15 Matrix Spike Duplicate Units MSD Res Ref Res RPD 91.9 97.3 100. 95.6 96.5 9.1 1590 75-125 75-125 75-125 75-125 75-125 75-125 75-125 108. 80-120 91.8 95.4 90.7 93.4 83 .6 91.9 107. 83.5 97.8 95.5 80-120 80-120 80-120 80-120 80-120 68-135 61-122 54-137 60-116 62-112 5297196-02 WG304609 L297196-02 WG304609 L297196-02 WG304609 L297196-02 WG304609 5297196-02 WG304609 L297196-02 WG304609 5297196-02 WG304609 L297012-02 WG304734 L297384-01 L297384-01 L297384-01 L297384-01 L297384-01 L297024-07 L297024-07 L297024-07 L297024-07 L297024-07 WG304757 WG304757 WG304757 WG304757 WG304757 WG304781 WG304781 WG304781 WG304781 WG304781 Sulfide Alkalinity Arsenic, Dissolved Barium, Dissolved Cadmium, Dissolved Calcium, Dissolved Chromium, Dissolved Copper, Dissolved Iron, Dissolved Lead, Dissolved Magnesium, Dissolved Potassium, Dissolved Selenium, Dissolved Silver, Dissolved Sodium, Dissolved Ammonia Nitrogen Bromide Chloride Fluoride Nitrate Nitrite Benzene Ethylbenzene Methyl tert-butyl ether Toluene Total Xylene mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 61.0 1.03 60.8 0.328 1.02 0.976 246. 245. 0.407 1.18 1.13 4.33 1.20 1.16 3.39 1.14 1.10 3.57 275. 274. 0.364 1.12 1.06 5.50 1.20 1.13 6.01 1.68 1.66 1.20 1.16 1.10 5.31 59.5 59.7 0.336 26.2 25.3 3.50 1.15 1.09 5.36 0.0618 0.103 50.0 180. 180. 0.00 5.40 47.0 100. 4.89 6.39 4.93 0.0476 0.0519 0.0443 0.0492 0.146 Page 9 of 11 5.38 0.371 45.9 99.8 4.81 6.27 4.82 0.0471 0.0535 0.0475 0.0489 0.150 2.37 0.200 1.65 1.90 2.26 1.14 2.92 6.89 0.628 2.44 Limit %Rec 20 122. 20 103. 20 111. 20 104. 20 101. 20 101. 20 106. 20 99.1 20 105. 20 93.7 20 103. 20 98.2 20 104. 20 102. 20 5.47 20 1590 20 108. 20 94.0 20 95.8 20 92.3 20 95.8 20 85.8 20 93.0 20 104. 20 77.2 20 98.4 20 93.1 Ref Samp Batch L296928-01 WG304271 5296607-01 WG304347 L297012-01 WG304419 5297196--02 WG304609 L297196-02 WG304609 5297196-02 WG304609 5297196-02 WG304609 L297196-02 WG304609 5297196-02 WG304609 L297196-02 WG304609 L297196-02 WG304609 L297196-02 WG304609 5297196-02 WG304609 L297196-02 WG304609 5297196-02 WG304609 L297196-02 WG304609 L297012-02 WG304734 5297384-01 WG304757 5297384-01 WG304757 5297384-01 WG304757 5297384-01 WG304757 L297384-01 WG304757 L297024-07 WG304781 5297024-07 WG304781 5297024-07 WG304781 L297024-07 WG304781 5297024-07 WG304781 ifr ENVI RONMENTAL SCIENCE CORP . Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level 11 Grand Junction, CO 81505 June 14, 2007 L297105 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 Batch number /Run number / Sample number cross reference WG304419: R321599: L297105-02 WG304347: R321652: L297105-01 WG304599: R321713: L297105-01 WG3042711 83217951 L297105-01 WG304588: R321863: L297105-01 WG304757: R321970: 1,297105-01 WG304734: R321971: L297105-01 WG304781: R322038: L297105-03 WG305054: R322057: L297105-01 WG304609: R322058: L297105-01 WG304678: R322059: L297105-01 * * Calculations are performed prior to rounding of reported values Page 10 of 11 ENVIRONMENTAL SCIENCE CORP. Cordilleran Compliance - GJ, CO Scotty Mann 826 21 1/2 Road Quality Assurance Report Level II Grand Junction, CO 81505 June 14, 2007 L297105 12065 Lebanon Rd. Mt. Juliet, TN 37122 (615) 758-5858 1-800-767-5859 Fax (615) 758-5859 Tax I.D. 62-0814289 Est. 1970 The data package includes a summary of the analytic results of the quality control samples required by the SW -846 or CWA methods. The quality control samples include a method blank, a laboratory control sample, and the matrix spike/matrix spike duplicate analysis. If a target parameter is outside the method limits, every sample that is effected is flagged with the appropriate qualifier in Appendix B of the analytic report. Method Blank - an aliquot of reagent water carried through the entire analytic process. The method blank results indicate if any possible contamination exposure during the sample handling, digestion or extraction process, and analysis. Concentrations of target analytes above the reporting limit in the method blank are qualified with the ".B" qualifier. Laboratory Control Sample - is a sample of known concentration that is carried through the digestion/extraction and analysis process. The percent recovery, expressed as a percentage of the theoretical concentration, has statistical control limits indicating that the analytic process is "in control". If a target analyte is outside the control limits for the laboratory control sample or any other control sample, the parameter is flagged with a "J4" qualifier for all effected samples. Matrix Spike and Matrix Spike Duplicate - is two aliquots of an environmental sample that is spiked with known concentrations of target analytes. The percent recovery of the target analytes also has statistical control limits. If any recoveries that are outside the method control limits, the sample that was selected for matrix spike/matrix spike duplicate analysis is flagged with either a "J5" or a "J6". The relative percent difference (%RPD) between the matrix spike and the matrix spike duplicate recoveries is all calculated. If the RPD is above the method limit, the effected samples are flagged with a "J3" qualifier. Page 11 of 11