INDOOR AIR QUALITY ASSESSMENT

Prepared for Boulder Valley School District 6500 E. Arapahoe Avenue Boulder, Colorado 80303 Prepared by Ramboll Environ US Corporation Date June, 207 Project Number 24309A IOOR AIR QUALITY ASSESSMENT BOULDER VALLEY SCHOOL DISTRICT: ARAPAHOE RIDGE HIGH SHOOL Ramboll Environ T + 32 288 3800 F + 32 288 380 www.rambollenviron.com

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge CONTENTS PROJECT SUMMARY. INTRODUCTION 4 2. METHODOLOGY 4 2. Ambient Indoor Air Quality 4 2.2 Sampling Locations 4 2.3 Volatile Organic Compound (VOC) Sample Collection 5 2.4 Laboratory Analysis 5 2.5 Direct Reading Estimates of VOCs 5 3. STAARDS & GUIDELINES 6 4. RESULTS 6 4. Summa Canisters 6 4.2 PID Instantaneous Measurements 8 5. COLUSIONS 8 TABLES Table 3: Table 5: Summa Canister Sample Locations EPA Region 8 RSL Exceedance Locations FIGURES Figure : Figure 2: Figure 3: Sample Locations NAME NAME APPEICES Appendix A: Appendix B: Appendix C: VOC Indoor Air Monitoring Tables Maps Laboratory

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge of 7 PROJECT SUMMARY Ramboll Environ US Corporation (Ramboll Environ) was retained by Boulder Valley School District (BVSD) to perform an Indoor Air Quality (IAQ) assessment at Arapahoe Ridge High School (Arapahoe) located at 6600 Arapahoe Road in Boulder, Boulder County Colorado. The assessment was conducted on April 20, 207. This Project Summary provides an overview of the approach, results and conclusions. More detailed discussion and supporting documents are provided in the report. Arapahoe is a multipurpose building that includes vocational training programs, a print shop, classrooms, offices and early childhood education. The vocational programs include cosmetology, auto mechanics and collision repair. It was reported that staff had expressed concern that chemical use in the vocational classes and print shop may have diminished air quality within the building resulting in adverse health effects. Xylene was reported to be a specific chemical of concern (COC). The results of this assessment revealed that the risk of adverse health outcomes to building occupants from exposure to chemicals originating from the vocational activities is negligible. Airborne concentrations of xylene (including o, p/m isomers) were below the most conservative health risk criteria in all traditional classrooms and corridors included in this assessment. Approach The IAQ assessment included collection of air samples from sixteen locations. Locations included the vocational areas, classrooms and offices where concerns had been reported and corridors near the vocational areas. Four of the locations were selected as comparison sites to evaluate background conditions. These included two samples collected outdoors (roof top and ground level) and two rooms located in the building but not in the vicinity of vocational classes (conference room and early childhood). On the day of the assessment all of the vocational classrooms were in session including hair & nails in cosmetology, painting in collision repair, and document production in the print shop. Samples were collected using evacuated Summa air canisters over an approximately an 8 hour duration and were analyzed for volatile organic compounds (VOCs). There are currently no regulatory limits for acceptable levels of chemicals in air in a school environment. Arapahoe is unique in that it contains vocational programs where occupational exposure limits may be appropriate for comparison (for staff) and it includes sensitive receptors (children) where Environmental Protection Agency (EPA) screening levels may be more appropriate. In order to evaluate risk of adverse health outcomes data was reviewed as follows: ) were compared to occupational exposure limits (OELs). These include the Occupational Safety and Health Administration s (OSHA) Permissible Exposure Limits (PELs). These levels are for working adults. 2) Data was then evaluated for any chemical that exceeded the EPA s Regional Screening Levels (RSL). RSLs are conservative values that are designed to protect sensitive individuals from long term chronic exposures and are screening level values. The RSLs assume exposure durations for more than 350 days/year, 24 hours/day for over 20 years, far more exposure time than would be expected working in or attending a school. These levels have built in protection factors and exceedance of these limits should not be construed or implied to be an unsafe condition. It is not unusual or abnormal to find some chemicals exceeding these values in any indoor environment. 3) A list of chemicals was created that includes those that exceeded the RSL and were found in vocational programs or the print shop and in other areas of the school. These are chemicals that

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge 2 of 7 may have migrated from the vocational areas/print shop to other areas of the building. These chemicals were evaluated for potential risk to building occupants at the measured concentration. There were two chemicals that exceeded the RSLs and were found in both vocational areas and other locations in the building. Isopropyl alcohol (rubbing alcohol) levels exceeded the RSL in cosmetology (hair and nails), Office 228 and early childhood room 7 (an indoor control location). Levels in the early childhood and office were very low, 0.04 and 0.2 parts per million (ppm) respectively. Isopropyl alcohol is a common chemical and can be found in disinfectants, including hand sanitizer. Levels measured in Arapahoe would not be a concern.,2,4 trimethylbenzene was detected in the print shop, collision repair and in the corridor near collision repair. The concentration in the corridor was 0.002 ppm. This is very low and would not be considered a health concern. Three chemicals were identified above the RSL in the corridor near auto mechanics. The chemicals included naphthalene, hexachlorobutadiene, and,2,4 trichlorobenzene. These chemicals did not exceed the RSL in the air samples collected in auto mechanics but may have originated from activities in these rooms. Each of these chemicals were in concentrations less than 0.00 ppm (equivalent to less than part per billion) and exposure duration in corridors would be relatively short duration compared to classrooms and the RSL criteria. The identification of these chemicals at very low levels in a corridor would not be a health risk. The highest concentrations of chemicals were measured in the vocational areas where tasks such as nails, hair, printing and auto painting were being performed. This finding would be expected. Conclusions of this assessment found that the risk of adverse health outcomes to building occupants from exposure to chemicals originating from vocational activities and the print shop is negligible. Airborne concentrations of xylene (including o, p/m isomers) were below the most conservative health risk criteria in all traditional classroom and corridors included in this assessment. The highest measured concentrations of chemicals were found in the rooms where vocational activities were taking place. This finding would be expected. The measured levels did not indicate that occupational exposure limits would be exceeded, however, personal, sampling would be required to verify. In general, there are two separate ways to assess air quality and exposure: ) Indoor air quality for those who do not directly work with chemicals and would not expect exposure as part of their normal work day or exposure to children who are not in vocational programs. 2) Occupational exposure to chemicals for those who directly use the products as part of their work assignment or tasks in vocational classrooms. These exposures are anticipated to be higher and samples are collected from devices worn by individuals when performing work/tasks with the target chemicals.

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge 3 of 7 This study was designed to evaluate indoor air quality in the context described in # above. Development of a risk assessment and sampling plan for #2 above is being performed as a separate phase/project.

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge 4 of 7. INTRODUCTION Ramboll Environ US Corporation (Ramboll Environ) was retained by Boulder Valley School District (BVSD) to perform an Indoor Air Quality (IAQ) assessment at Arapahoe Ridge High School (Arapahoe) located at 6600 Arapahoe Road in Boulder, Colorado. Samples were collected on April 20, 207. The assessment was conducted by Mr. Robert Rottersman, MS, CIH, Principal and Mr. Joel Krech, Associate with Ramboll Environ. Arapahoe is unique in that it is a multipurpose building that includes vocational training programs, a print shop, traditional classrooms, offices and early childhood education. The vocational programs include cosmetology, auto mechanics and collision repair. It was reported that staff had expressed concern that chemical use in the vocational classes and print shop may have diminished air quality within the building resulting in adverse health effects. Xylene was reported to be a specific chemical of concern (COC). 2. METHODOLOGY 2. Ambient Indoor Air Quality Ambient IAQ relates to chemical concentrations in air throughout the building originating from vocational educational programs such as auto body, auto repair, cosmetology and the print shop. These are airborne levels of contaminants that occupants not directly involved with the vocational activities might be exposed to. In general, exposure guidelines for IAQ are designed to protect the general population, including sensitive receptors including children. This differs from occupational exposures that are chemical exposure expected to occur to individuals who are working directly with chemicals and are assumed to be adults who are healthy enough to perform work related tasks. 2.2 Sampling Locations Samples were collected from sixteen different locations in, or around, Arapahoe using Summa canisters. The Summa canisters were equipped with a flow control device that allowed the samples to be collected over an 8hour period. Mr. Rottersman, in conjunction with BSVD personnel, determined the planned sampling locations based on the building s heating, ventilation and air conditioning (HVAC) system, air flow patterns, locations of occupant concerns and locations of chemical use in vocational classrooms. Focus was placed on the source areas (e.g., cosmetology and auto repair) and the movement of air throughout the building to nonsource areas. Two samples were placed each at outdoor areas and classrooms (indoor control) that were not in the vicinity and on different ventilation systems than vocational areas. The roof top outdoor sample was positioned between the exhaust from the collision repair paint booth and the outside air intake of the roof top air handling unit. Sample placement is depicted on Figure through Figure 3 in Appendix B and listed below.

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge 5 of 7 Table 3.: Summa Canister Sample Locations Canister ID Location and Room Number Comments 204 Conference Room 005 Indoor Control 38 Early Childhood 7 Indoor Control 97 Cosmetology Hair 27 2200 Cosmetology Nails 206 2303 Office 228 224 Math Classroom 368 2346 Science Lab 359 2243 Corridor 347 & 360 Corridor Intersection 89 Criminal Justice 377 2358 Auto Mechanics 383 454 Auto Mechanics 392 205 Corridor 306 Near Collision Repair 60 Collision Repair 337 2732 Print Shop 303 98 Roof Intake Outdoors Outdoor Control 77 Main Entrance Outdoors Outdoor Control 2.3 Volatile Organic Compound (VOC) Sample Collection Whole air samples for VOCs were collected using 2.6liter evacuated Summa canisters. Canisters and flow control devices were provided by the laboratory. Verification of canister cleanliness is provided in the Alpha Analytical report included in Appendix C. The sampling procedure included placing a canister in the area to be sampled, ideally away from walls and obstructions with the inlet approximately 4 to 5 feet above the floor. The steel cap was removed and a flow control valve was attached to the inlet. The valve was opened and initial reading from the pressure gauge recorded. Canisters were deployed between 06:50 and 07:59 on the morning of April 20, 207. The flow control devices were set to an air flow of approximately 0.00542 liters of air per minute (lpm) so that the canisters would be filled after approximately 8hours. The canisters were monitored throughout the day by observing the pressure gauge readings. After approximately 8 hours, the final pressure was recorded, valves were closed, flow control devices removed and the steel caps replaced. The canisters were shipped via overnight to Alpha Analytical, located in Mansfield, Massachusetts for analysis using the applicable Environmental Protection Agency (EPA) standards for each specific VOC and EPA TO5 for any tentatively identified compounds (TICs). 2.4 Laboratory Analysis Each of the 6, 8hour samples were analyzed for a total of 67 VOCs including the chemicals originally requested by the school district: acetone, acetaldehyde, acetonitrile, benzene, ethanol, ethylbenzene, isopropyl alcohol, m, pxylene, oxylene, nhexane, styrene & toluene. The laboratory screened the samples and reported any tentatively identified compounds (TICs) for chemicals that were detected using the EPA TO5 method but are not specifically requested in the analysis. 2.5 Direct Reading Estimates of VOCs Direct readings of total VOC concentrations were made at 4 locations within Arapahoe, in both the morning and afternoon. Readings were made using a ppbrae 3000 photoionization detector (PID) with capability of measuring in the part per billion (ppb) range.

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge 6 of 7 3. STAARDS & GUIDELINES There are currently no regulatory limits for levels of chemicals in air in a school environment. Arapahoe is unique in that it contains vocational programs where OELs may be appropriate for comparison (for staff) and it includes sensitive receptors (children) where EPA screening levels may be more appropriate. Detected concentrations in each Summa canister sample were compared to the Regional Screening Level (RSL) Table dated May 206 published by the EPA Region 8. A target hazard quotient (THQ) of 0. was used due to the multiple contaminants of concern. A target cancer risk factor of E6 was used, which is typically used for the general population. These are conservative values that are designed to protect sensitive individuals from long term chronic exposures. They typically assume exposure for more than 350 days/year, 24 hours/day for over 20 years. Much more time than even the most ambitious student or staff member would spend in a school building. These levels have built in protection factors and exceedance of these limits should not be construed or implied to be an unsafe condition. More information regarding the RSLs can be found at: https://www.epa.gov/risk/regionalscreeninglevelsrslsusersguidemay206. The Occupational Safety and Health Administration (OSHA) Permissible Exposure Limits (PELs) are provided for reference. These are regulatory limits that cannot be exceeded for occupational exposures but would not be appropriate for sensitive populations. The American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Values (TLVs) are also provided for reference. Like the PELs, these are occupational limits and would be appropriate for evaluating exposure to working adults, not children. Unlike the PELs, the TLVs are not enforceable as legal standards but are updated annually. Note that both the PELs and TLVs are based on personal samples. This project used stationary area samples that cannot be directly compared to PELs and TLVs for compliance purposes. 4. RESULTS 4. Summa Canisters Laboratory results of the VOC Indoor Air Monitoring can be found in Appendix C. The consolidated and full results tables located in Appendix A Summarize the results of the VOC indoor air monitoring. All chemicals that were above measurable concentrations (exceeded the limit of detection) are provided in the full table and compared to EPA RSLs, OSHA PELs, and ACGIH TLVs. The consolidated table includes only chemicals with results above the RSLs. It is important to note that all results were well below occupational exposure limits. Data was also reviewed more closely for any chemical that exceeded the EPA s RSL. These chemicals are listed in the table below. The use of RSLs is for data screening only. RSLs are conservative values that are designed to protect sensitive individuals from long term chronic exposures. This includes exposure durations for more than 350 days/year, 24 hours/day for over 20 years, far more than would occur in a school environment. These levels have built in protection factors and exceedance of these limits should not be construed or implied to be an unsafe condition. It is not unusual or abnormal to find some chemicals exceeding these values in any indoor environment. A list of detected contaminates that exceed EPA Region 8 RSLs is as follows:

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge 7 of 7 Table 5.: EPA Region 8 RSL Exceedance Locations Canister ID Location Comments EPA RSL Exceedances 204 Conference Room 005 Control None identified 38 Early Childhood 7 Control Isopropanol 97 Cosmetology Hair 27 Isopropanol 2200 Cosmetology Nails 206 Ethyl Acetate Isopropanol 2303 Office 228 Isopropanol 224 Math Classroom 368 Acetaldehyde 2346 Science Lab 359 Acetaldehyde 2243 Corridor 347 & 360 Corridor Intersection Hexachlorobutadiene Naphthalene,2,4Trichlorobenzene 89 Criminal Justice 377 None identified 2358 Auto Mechanics 383 Benzene 454 Auto Mechanics 392 Benzene 205 Corridor 306 Near Collision Repair Acetaldehyde,2,4Trimethylbenzene 60 Collision Repair 337 Benzene Ethylbenzene p/mxylene,2,4trimethylbenzene 2732 Print Shop 303 Acetaldehyde,2,4Trimethylbenzene 98 Roof Intake Outdoors Control None identified 77 Main Entrance Outdoors Control Ethyl Acetate Methylene chloride The list of chemicals in the table includes those that exceeded the RSL and were found in vocational rooms or the print shop and in other areas of the school. These are chemicals that may have migrated from the vocational areas/print shop to other areas of the building. These chemicals were evaluated for potential risk to building occupants at the measured concentrations. There were two chemicals that exceeded the RSLs and were found in both vocational areas and other locations in the building. Isopropyl alcohol (rubbing alcohol) levels exceeded the RSL in cosmetology (hair and nails), Office 228 and early childhood room 7 (an indoor control location). Levels in the early childhood and office were very low, 0.04 and 0.2 parts per million (ppm) respectively. Isopropyl alcohol is a common chemical and can be found in disinfectants, including hand sanitizer. Levels measured in Arapahoe would not be a concern.,2,4 trimethylbenzene was detected in the print shop, collision repair and in the corridor near collision repair. The concentration in the corridor was 0.002 ppm. This is very low and would not be considered a health concern. Three chemicals were identified above the RSL in the corridor near auto mechanics. The chemicals included naphthalene, hexachlorobutadiene, and,2,4 trichlorobenzene. These chemicals did not exceed the RSL in the air samples collected in auto mechanics but may have originated from activities in these rooms. Each of these chemicals were in concentrations less than 0.00 ppm (equivalent to less than part per billion) and exposure duration in corridors would be relatively short duration compared to classrooms and the RSL criteria. The identification of these chemicals at very low levels in a corridor would not be a health risk.

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge 8 of 7 The highest concentrations of chemicals were measured in the vocational areas where tasks such as nails, hair, printing and auto painting were being performed. This finding would be expected. 4.2 PID Instantaneous Measurements The PID readings are considered point in time estimates of VOC concentrations. They cannot differentiate between compounds and assume all VOCs have the same molecular weight, which is not the case. Therefore these readings should be viewed as screening measurements and not for exposure assessment. The PID readings from the morning and afternoon are depicted on Figure through Figure 3. The afternoon measurements were taken in coordination with the vocational classes, cosmetology and auto body were both in session. In general, VOC readings throughout the school were low with total levels less than 0.5 ppm in all areas outside of vocational rooms and the print shop. Most measurements had concentrations less than 0. ppm. Concentrations increased in the afternoon when the vocational programs were more active. This finding would be expected. 5. COLUSIONS of this assessment found that the risk of adverse health outcomes to building occupants from exposure to chemicals originating from vocational activities and the print shop is negligible. Airborne concentrations of xylene (including o, p/m isomers) were below the most conservative health risk criteria in all traditional classroom and corridors included in this assessment. The highest measured concentrations of chemicals were found in the rooms where vocational activities were taking place. This finding would be expected. The measured levels did not indicate that occupational exposure limits would be exceeded, however, personal, sampling would be required to verify. In general, there are two separate ways to assess air quality and exposure: 3) Indoor air quality for those who do not directly work with chemicals and would not expect exposure as part of their normal work day or exposure to children who are not in vocational programs. 4) Occupational exposure to chemicals for those who directly use the products as part of their work assignment or tasks in vocational classrooms. These exposures are anticipated to be higher and samples are collected from devices worn by individuals when performing work/tasks with the target chemicals. This study was designed to evaluate indoor air quality in the context described in # above. Development of a risk assessment and sampling plan for #2 above is being performed as a separate phase/project.

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge APPEIX A DATA TABLES (full data table is provided as a separate excel file due to size)

Boulder Valley School District: Arapahoe Campus Indoor Air Regional Screening Limit Exceedances Ramboll Environ Project No: 2 42997B s 206 EPA Region 8 RSLs (THQ = 0.) 204 38 97 2200 2303 224 2346 2243 89 2358 454 205 60 2372 98 77 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 4/20/207 Carcinogenic SL Noncarcinogenic SL Cosmetology Near Auto Near Collision TR=E 06 HI=0. Conference Room Early Childhood Cosmetology Hair Office Math Classroom Science Lab Criminal Justice Auto Mechanics Auto Mechanics Nails Mechanics Repair Collision Repair Print Shop Outdoors Outdoors (ug/m 3 ) (ug/m 3 ) Corridor Room 005 Room 7 Room 27 Room 206 Room 228 Room 368 Room 359 347 & 360 Room 377 Room 383 Room 392 Corridor 306 Room 337 Room 303 Roof Intake Main Entrance VOCs (µg/m 3 ) Acetaldehyde 5.6 3.9 7.0 4.94 4.6 9.96 Benzene.6 3 3.08 2.03 3.58 <RSL Ethyl Acetate 3 29 <RSL 64. Ethylbenzene 4.9 440 <RSL <RSL 8.4 <RSL <RSL Hexachlorobutadiene 0.56 3.3 iso Propyl Alcohol (Isopropanol) 88 <RSL 06 83 D 605 D 474 <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL Methylene chloride 200 260 <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL <RSL 290 Naphthalene 0.36.3 3.24 p/m Xylene 44 <RSL <RSL <RSL <RSL <RSL 59.9 <RSL <RSL,2,4 Trichlorobenzene 0.88 3.34,2,4 Trimethylbenzene 3. <RSL <RSL <RSL <RSL.8 9.93 7 <RSL Notes THQ = Target Hazardous Quotient TR = Target Risk HI = Hazardous Index VOCs = Volatile Organic Compounds µg/m 3 = micrograms per cubic meter Bold = exceeds EPA SL <RSL = below Regional Screening Limits = below detection limits D = Concentration of analyte exceeds the range of calibration curve and/or linear range of the intrument. Concentration of analyte was quantified from diluted analysis Target Hazardous Quotient (THQ) of 0. for Composite Worker Air from EPA Regional Screening Levels (RSLs), updated May 206. 5/9/207 P:\Boulder County Schools\Arapahoe Ridge School\Lab Data\BVSD Indoor Air Monitoring

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge APPEIX B MAPS

Legend ## ## 9 0 37 0 56 0 Morning PID Reading (ppb) Afternoon PID Reading (ppb) Ambient Air Sample Location 87 0 22 0 39 0 38 28 0 26 0 27 0 63 0 77 35 0 67 0 204 46 0 33 0 64 0 PROJECT: SHEET TITLE: DATE: Boulder Valley School District Arapahoe Ridge High School April 20th 207 VOC Testing First Floor 4/2/207 PROJECT NO.: 2 42997B 4/24/207 P:\Boulder County Schools\Arapahoe Ridge School\Visio\Ambient Air First Floor_4.20.7.vsdx FIGURE No.:

Legend ## Morning PID Reading (ppb) ## Afternoon PID Reading (ppb) Ambient Air Sample Location 4 0 0 4 0 2303 2 0 8 0 27 0 0 0 0 0 2200 5 0 9 500 26 2 97 35 000 PROJECT: SHEET TITLE: DATE: 4/2/207 PROJECT NO.: 2 42997B Boulder Valley School District Arapahoe Ridge High School April 20 th 207 VOC Testing Second Floor North FIGURE No.: 2 4/24/207 P:\Boulder County Schools\Arapahoe Ridge School\Visio\Ambient Air Second Floor North_4.20.7.vsdx

Legend ## ## 29 2358 2243 68 2 40 49 Morning PID Reading (ppb) Afternoon PID Reading (ppb) Ambient Air Sample Location 60 7000 0 0 205 20 60 0 0 2 0 454 89 0 2346 32 4 48 000 9 50 2372 224 3 0 9 60 PROJECT: SHEET TITLE: DATE: Boulder Valley School District Arapahoe Ridge High School April 20th 207 VOC Testing Second Floor South 4/2/207 PROJECT NO.: 2 42997B 4/24/207 P:\Boulder County Schools\Arapahoe Ridge School\Visio\Ambient Air Second Floor South_4.20.7.vsdx FIGURE No.: 3

Indoor Air Quality Assessment Boulder Valley School District Arapahoe Ridge APPEIX C ANALYTICAL LABORATORY RESULTS

Serial_No:05075:29 ANALYTICAL REPORT Client: ATTN: Phone: L72659 Ramboll Environ 333 West Wacker Drive Suite 2700 Chicago, IL 60606 Robert Rottersman (32) 2883857 242997B 05/0/7 The original project report/data package is held by Alpha Analytical. This report/data package is paginated and should be reproduced only in its entirety. Alpha Analytical holds no responsibility for results and/or data that are not consistent with the original. Certifications & Approvals: MA (MMA030), NH NELAP (2062), NELAP (MA05), CT (PH04), FL (E8784), IL (20008), LA (85084), ME (MA00030), MD (350), NY (627), (685), OH (CL06), PA (6802089), RI (LAO00299), TX (T0470449), VT (VT005), VA (46094), WA (C954), US Army Corps of Engineers, USDA (Permit #P330300067), USFWS (Permit #LE206964). 320 Forbes Boulevard, Mansfield, MA 02048806 5088229300 (Fax) 5088223288 8006249220 www.alphalab.com Page of 00

Serial_No:05075:29 242997B L72659 05/0/7 Alpha Sample ID Client ID Matrix Sample Location Collection Date/Time Receive Date L726590 204 AIR 04/20/7 5:39 04/2/7 L7265902 38 AIR 04/20/7 4:56 04/2/7 L7265903 97 AIR 04/20/7 5:04 04/2/7 L7265904 2200 AIR 04/20/7 5:05 04/2/7 L7265905 2303 AIR 04/20/7 5:0 04/2/7 L7265906 224 AIR 04/20/7 5:0 04/2/7 L7265907 2346 AIR 04/20/7 5:09 04/2/7 L7265908 2243 AIR 04/20/7 5:2 04/2/7 L7265909 89 AIR 04/20/7 5:5 04/2/7 L726590 2358 AIR 04/20/7 5:22 04/2/7 L72659 454 AIR 04/20/7 5:9 04/2/7 L726592 205 AIR 04/20/7 5:24 04/2/7 L726593 60 AIR 04/20/7 5:26 04/2/7 L726594 2372 AIR 04/20/7 5:33 04/2/7 L726595 98 AIR 04/20/7 5:46 04/2/7 L726596 77 AIR 04/20/7 5:47 04/2/7 Page 2 of 00

Serial_No:05075:29 L72659 242997B 05/0/7 Case Narrative The samples were received in accordance with the Chain of Custody and no significant deviations were encountered during the preparation or analysis unless otherwise noted. Sample Receipt, Container Information, and the Chain of Custody are located at the back of the report. contained within this report relate only to the samples submitted under this Alpha Lab Number and meet NELAP requirements for all NELAP accredited parameters unless otherwise noted in the following narrative. The data presented in this report is organized by parameter (i.e. VOC, SVOC, etc.). Sample specific Quality Control data (i.e. Surrogate Spike Recovery) is reported at the end of the target analyte list for each individual sample, followed by the Laboratory Batch Quality Control at the end of each parameter. Tentatively Identified Compounds (TICs), if requested, are reported for compounds identified to be present and are not part of the method/program Target Compound List, even if only a subset of the TCL are being reported. If a sample was reanalyzed or reextracted due to a required quality control corrective action and if both sets of data are reported, the Laboratory ID of the reanalysis or reextraction is designated with an "R" or "RE", respectively. When multiple Batch Quality Control elements are reported (e.g. more than one LCS), the associated samples for each element are noted in the grey shaded header line of each data table. Any Laboratory Batch, Sample Specific % recovery or RPD value that is outside the listed Acceptance Criteria is bolded in the report. All specific QC information is also incorporated in the Data Usability format of our Data Merger tool where it can be reviewed along with any associated usability implications. Soil/sediments, solids and tissues are reported on a dry weight basis unless otherwise noted. Definitions of all data qualifiers and acronyms used in this report are provided in the Glossary located at the back of the report. In reference to questions H (CAM) or 4 (RCP) when "NO" is checked, the performance criteria for CAM and RCP methods allow for some quality control failures to occur and still be within method compliance. In these instances the specific failure is not narrated but noted in the associated QC table. The information is also incorporated in the Data Usability format of our Data Merger tool where it can be reviewed along with any associated usability implications. Please see the associated ADEx data file for a comparison of laboratory reporting limits that were achieved with the regulatory Numerical Standards requested on the Chain of Custody. HOLD POLICY For samples submitted on hold, Alpha's policy is to hold samples (with the exception of Air canisters) free of charge for 2 calendar days from the date the project is completed. After 2 calendar days, we will dispose of all samples submitted including those put on hold unless you have contacted your Client Service Representative and made arrangements for Alpha to continue to hold the samples. Air canisters will be disposed after 3 business days from the date the project is completed. Please contact Client Services at 8006249220 with any questions. Page 3 of 00

Serial_No:05075:29 L72659 242997B 05/0/7 Case Narrative (continued) Volatile Organics in Air Canisters were released from the laboratory on April 9, 207. The canister certification results are provided as an addendum. L7265903 and 04: The samples were diluted and reanalyzed to quantify the results within the calibration range. The result(s) should be considered estimated, and are qualified with an E flag, for any compound(s) that exceeded the calibration range in the initial analysis. The reanalysis was performed only for the compound(s) that exceeded the calibration range. L726590 and The presence of Acetone could not be determined in these samples due to a nontarget compound interfering with the identification and quantification of this compound. The WG99875 Laboratory Duplicate RPD, performed on L7265902, is above the acceptance criteria for methylene chloride (38%); however, the sample and duplicate results are less than five times the reporting limit therefore no further action is required. I, the undersigned, attest under the pains and penalties of perjury that, to the best of my knowledge and belief and based upon my personal inquiry of those responsible for providing the information contained in this analytical report, such information is accurate and complete. This certificate of analysis is not complete unless this page accompanies any and all pages of this report. Authorized Signature: Title: Technical Director/Representative Date: 05/0/7 Page 4 of 00

Serial_No:05075:29 AIR Page 5 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L726590 204 Air 48,TO5 04/27/7 6:3 MB 04/20/7 5:39 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.265.3 0.989 Chloromethane 0.53.06 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 0. 5.00 9.0 9.42 Vinyl bromide 0.874 Acetone 6.50.00 5.4 2.38 Acetonitrile 0.336 Trichlorofluoromethane.2 isopropyl Alcohol 4.7.6.23,Dichloroethene 0.793 Methylene chloride 0.507.76.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 6 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.38 242997B L72659.20.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 204 04/20/7 5:39 04/2/7 L726590 Serial_No:05075:29 Page 7 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726590 204 04/20/7 5:39 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL unknown siloxane 8.2 J Nonanal. Unknown 2.2 J Methyl Alcohol.7 Cyclotrisiloxane, Hexamethyl 8.2 Silanol, Trimethyl 3.6 Page 8 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726590 204 04/20/7 5:39 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 98 98 00 6040 6040 6040 Page 9 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265902 38 Air 48,TO5 04/27/7 6:46 MB 04/20/7 4:56 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.30.49 0.989 Chloromethane 0.6.29 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 9.2 5.00 36.2 9.42 Vinyl bromide 0.874 Acetone 6.52.00 5.5 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.239.34.2 isopropyl Alcohol 43.0 06.23,Dichloroethene 0.793 Methylene chloride 0.752 2.6.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 0 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.545 242997B L72659 2.05.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 38 04/20/7 4:56 04/2/7 L7265902 Serial_No:05075:29 Page of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265902 38 04/20/7 4:56 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Methyl Alcohol.2 unknown siloxane 3.0 J Cyclotrisiloxane, Hexamethyl 2.5 Decanal.3 Unknown.3 J unknown siloxane.4 J Nonanal.7 Silanol, Trimethyl 2.5 Page 2 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265902 38 04/20/7 4:56 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 92 92 92 6040 6040 6040 Page 3 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265903 97 Air 48,TO5 04/27/7 7:52 MB 04/20/7 5:04 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.266.32 0.989 Chloromethane 0.730.5 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 70 5.00 320 9.42 Vinyl bromide 0.874 Acetone 8.32.00 9.8 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.27.22.2 isopropyl Alcohol 328 806.23 E,Dichloroethene 0.793 Methylene chloride 0.558.94.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 4 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.439 242997B L72659.65.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 97 04/20/7 5:04 04/2/7 L7265903 Serial_No:05075:29 Page 5 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265903 97 04/20/7 5:04 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Methyl Alcohol.3 unknown siloxane 0 J Limonene.8 Isobutane 2.2 Nonanal.6 Unknown 4.8 J Page 6 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265903 97 04/20/7 5:04 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 92 93 87 6040 6040 6040 Page 7 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265903 97 Air 48,TO5 04/28/7 0:30 RY D 04/20/7 5:04 04/2/7 isopropyl Alcohol 338. 83 3.07 2.5 Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 85 90 80 6040 6040 6040 Page 8 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265904 2200 Air 48,TO5 04/27/7 8: MB 04/20/7 5:05 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.29.44 0.989 Chloromethane 0.578.9 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 20 5.00 226 9.42 Vinyl bromide 0.874 Acetone 350.00 320 2.38 E Acetonitrile 0.336 Trichlorofluoromethane 0.26.2.2 isopropyl Alcohol 5 627.23 E,Dichloroethene 0.793 Methylene chloride.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 9 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 60.7 0.470 0.450 242997B L72659 29.66.70.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 2200 04/20/7 5:05 04/2/7 L7265904 Serial_No:05075:29 Page 20 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265904 2200 04/20/7 5:05 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Acetic acid, butyl ester 8 npropyl Acetate 3.0 Limonene.3 unknown siloxane 3.2 J Methyl Alcohol.3 Silanol, Trimethyl 0 Acetic acid, methylethyl....6 Cyclotrisiloxane, Hexamethyl. Unknown.4 J Nonanal 2.0 Page 2 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265904 2200 04/20/7 5:05 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 93 94 9 6040 6040 6040 Page 22 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265904 2200 Air 48,TO5 04/28/7 02:00 RY D 04/20/7 5:05 04/2/7 Acetone 630 0.0 3870 23.8 0 isopropyl Alcohol 246 5.00 605 2.3 0 Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 88 92 92 6040 6040 6040 Page 23 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265905 2303 Air 48,TO5 04/27/7 8:58 MB 04/20/7 5:0 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.333.65 0.989 Chloromethane 0.552.4 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 63.7 5.00 20 9.42 Vinyl bromide 0.874 Acetone 7.84.00 8.6 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.29.23.2 isopropyl Alcohol 93 474.23,Dichloroethene 0.793 Methylene chloride 0.75 2.48.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 24 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.308 242997B L72659.6.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 2303 04/20/7 5:0 04/2/7 L7265905 Serial_No:05075:29 Page of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265905 2303 04/20/7 5:0 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Nonanal.3 Silanol, Trimethyl.7 unknown siloxane 2.2 J Methyl Alcohol.4 Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 89 93 89 6040 6040 6040 Page 26 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265906 224 Air 48,TO5 04/27/7 9:3 MB 04/20/7 5:0 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.324.60 0.989 Chloromethane 0.648.34 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 3.89 2.50 7.0 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 84 5.00 347 9.42 Vinyl bromide 0.874 Acetone 7.55.00 7.9 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.24.35.2 isopropyl Alcohol 8.2 44.7.23,Dichloroethene 0.793 Methylene chloride 0.934 3.24.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 27 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.36 0.539 242997B L72659.30 2.03.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 224 04/20/7 5:0 04/2/7 L7265906 Serial_No:05075:29 Page 28 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265906 224 04/20/7 5:0 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Methyl Alcohol 2. unknown siloxane 2.4 J Silanol, Trimethyl 2.7 Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 85 92 94 6040 6040 6040 Page 29 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265907 2346 Air 48,TO5 04/27/7 20:03 MB 04/20/7 5:09 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.295.46 0.989 Chloromethane 0.557.5 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.74 2.50 4.94 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 8.9 5.00 35.6 9.42 Vinyl bromide 0.874 Acetone 5.87.00 3.9 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.234.3.2 isopropyl Alcohol 4.52..23,Dichloroethene 0.793 Methylene chloride 2.5 7.47.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 30 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.308 0.226 0.827 242997B L72659.09 0.688 0.926 3.2.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 2346 04/20/7 5:09 04/2/7 L7265907 Serial_No:05075:29 Page 3 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265907 2346 04/20/7 5:09 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Silanol, Trimethyl 3.3 Unknown.2 J unknown siloxane 35 J Methyl Alcohol 2.6 Cyclotrisiloxane, Hexamethyl.6 Dodecane (C2).5 Page 32 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265907 2346 04/20/7 5:09 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 88 93 9 6040 6040 6040 Page 33 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265908 2243 Air 48,TO5 04/27/7 20:36 MB 04/20/7 5:2 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.604 2.99 0.989 Chloromethane 0.68.28 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 29.3 5.00 55.2 9.42 Vinyl bromide 0.874 Acetone 0.7.00.4 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.442 2.48.2 isopropyl Alcohol. 27.3.23,Dichloroethene 0.793 Methylene chloride.38 4.79.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 34 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.46 0.278 0.278.22 242997B L72659.47 0.957.4 4.60.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 2243 04/20/7 5:2 04/2/7 L7265908 Serial_No:05075:29 Page 35 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265908 2243 04/20/7 5:2 04/2/7 p/mxylene 0.54 0.400 2.23.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.262.4 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene 0.598 2.94 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene 0.450 3.34.48 Naphthalene 0.67 3.24.05 Hexachlorobutadiene 0.309 3.30 2.3 Tentatively Identified Compounds Units RDL Unknown. J Limonene.0 unknown siloxane.4 J Nonanal. Naphthalene, 2methyl.9 Cyclotrisiloxane, Hexamethyl.9 Methyl Alcohol.8 Naphthalene, methyl 2.4 Silanol, Trimethyl 5 Unknown 2.9 J Page 36 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265908 2243 04/20/7 5:2 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 90 92 93 6040 6040 6040 Page 37 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L7265909 89 Air 48,TO5 04/27/7 2:09 MB 04/20/7 5:5 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.630 3.2 0.989 Chloromethane 0.623.29 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 3.7 5.00 59.7 9.42 Vinyl bromide 0.874 Acetone 9.73.00 23. 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.327.84.2 isopropyl Alcohol 8.09 9.9.23,Dichloroethene 0.793 Methylene chloride 0.6 2.7.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 38 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.324 0.799 0.860 242997B L72659.4 3.27 3.24.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 89 04/20/7 5:5 04/2/7 L7265909 Serial_No:05075:29 Page 39 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265909 89 04/20/7 5:5 04/2/7 p/mxylene 0.435 0.400.89.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene 0.497 2.44 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Isobutane.4 Nonanal. Limonene.9 Methyl Alcohol.7 Cyclotrisiloxane, Hexamethyl 3.8 unknown siloxane 4.2 J Silanol, Trimethyl.5 Unknown 2.2 J Page 40 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L7265909 89 04/20/7 5:5 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 89 93 95 6040 6040 6040 Page 4 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L726590 2358 Air 48,TO5 04/27/7 2:42 MB 04/20/7 5:22 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.378.87 0.989 Chloromethane 0.53.0 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 9.4 5.00 36.6 9.42 Vinyl bromide 0.874 Acetone.00 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.29.23.2 isopropyl Alcohol 2.30 5.65.23,Dichloroethene 0.793 Methylene chloride 2.5 8.72.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 42 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene.72 0.964 0.605 5.79 2.59 0.304 242997B L72659 6.06 3.08 2.08 23.7 9.76.32.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 2358 04/20/7 5:22 04/2/7 L726590 Serial_No:05075:29 Page 43 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726590 2358 04/20/7 5:22 04/2/7 p/mxylene.03 0.400 4.47.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.337.46 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene 0.276.36 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Pentane 4. Butane, 2Methyl Pentane, 2methyl 3.4 Butane 4.0 Pentane, 3methyl.8 Undecane 2.9 Methyl Alcohol 2.7 Hexane, 3methyl 5.4 Hexane, 2methyl 3.8 Silanol, Trimethyl 4.4 Page 44 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726590 2358 04/20/7 5:22 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 94 99 0 6040 6040 6040 Page 45 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L72659 454 Air 48,TO5 04/27/7 22:4 MB 04/20/7 5:9 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.394.95 0.989 Chloromethane 0.602.24 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 8.5 5.00 34.9 9.42 Vinyl bromide 0.874 Acetone.00 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.232.30.2 isopropyl Alcohol 2.6 5.3.23,Dichloroethene 0.793 Methylene chloride 0.643 2.23.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 46 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.602.88 0.636 0.78 0.6 3.3 3.29 0.545 242997B L72659.78 6.63 2.03 2.69 2.85 2.8 2.4 2.37.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 454 04/20/7 5:9 04/2/7 L72659 Serial_No:05075:29 Page 47 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L72659 454 04/20/7 5:9 04/2/7 p/mxylene 2.3 0.400 9..74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.733 3.8 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene 0.590 2.90 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Hexane, 2methyl 2.3 Cyclotrisiloxane, Hexamethyl 7.7 Pentane, 2methyl 2.7 unknown cycloalkane 3.4 J Butane 5.3 Hexane, 3methyl 3. Pentane 3.5 Butane, 2Methyl 9.7 Undecane unknown cycloalkane 2.3 J Page 48 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L72659 454 04/20/7 5:9 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 90 93 98 6040 6040 6040 Page 49 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L726592 205 Air 48,TO5 04/27/7 22:47 MB 04/20/7 5:24 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.988 4.89 0.989 Chloromethane 0.608.26 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.56 2.50 4.6 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 6.2 5.00 30.5 9.42 Vinyl bromide 0.874 Acetone 7.52.00 7.9 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.580 3.26.2 isopropyl Alcohol 5.83 4.3.23,Dichloroethene 0.793 Methylene chloride 0.745 2.59.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 50 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.536 0.973 242997B L72659.58 3.67.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 205 04/20/7 5:24 04/2/7 L726592 Serial_No:05075:29 Page 5 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726592 205 04/20/7 5:24 04/2/7 p/mxylene 0.400 2.7.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.353.53 0.869 4Ethyltoluene 0.703 3.46,3,5Trimethylbenzene 0.744 3.66,2,4Trimethylbenzene 2.40.8 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Methyl Alcohol.7 unknown benzene.3 J unknown siloxane 4.3 J Nonanal.7 Silanol, Trimethyl 2.4 Unknown.5 J Cyclotrisiloxane, Hexamethyl 3.6 Limonene.7 Page 52 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726592 205 04/20/7 5:24 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 85 90 94 6040 6040 6040 Page 53 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L726593 60 Air 48,TO5 04/27/7 23:20 MB 04/20/7 5:26 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.58 2.56 0.989 Chloromethane 0.64.27 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 7.9 5.00 33.7 9.42 Vinyl bromide 0.874 Acetone 72.00 409 2.38 Acetonitrile 0.336 Trichlorofluoromethane 0.485 2.73.2 isopropyl Alcohol 0.3.3.23,Dichloroethene 0.793 Methylene chloride 0.720 2.50.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 54 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 5.2 4.23.2.2.43 0.307.45 5.33 99.4 4.24 242997B L72659 44.8 5.2 3.95 3.58 4.92.43 5.94 2.8 375 8.4.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 60 04/20/7 5:26 04/2/7 L726593 Serial_No:05075:29 Page 55 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726593 60 04/20/7 5:26 04/2/7 p/mxylene 3.8 0.400 59.9.74 Bromoform 2.07 Styrene 7.32 3.2 0.852,,2,2Tetrachloroethane.37 oxylene 4.2 8.3 0.869 4Ethyltoluene 0.604 2.97,3,5Trimethylbenzene 0.668 3.28,2,4Trimethylbenzene 2.02 9.93 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Hexane, 2methyl.5 Pentane.5 Pentane, 2methyl.6 Methyl Alcohol 5 Octane 2.3 Hexane, 3methyl.7 Unknown 4.0 J unknown alkane.9 J Acetic acid, butyl ester Butane 2.2 Page 56 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726593 60 04/20/7 5:26 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 80 90 95 6040 6040 6040 Page 57 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L726594 2372 Air 48,TO5 04/27/7 23:54 MB 04/20/7 5:33 04/2/7 Propylene 0.86 Dichlorodifluoromethane 2.08 0.3 0.989 Chloromethane 0.636.3 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 5.53 2.50 9.96 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 26.7 5.00 50.3 9.42 Vinyl bromide 0.874 Acetone 2.4.00 29.5 2.38 Acetonitrile 0.336 Trichlorofluoromethane.34 7.53.2 isopropyl Alcohol 8.8 46.2.23,Dichloroethene 0.793 Methylene chloride 0.664 2.3.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 58 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.569 0.559 0.5.06 0.426 242997B L72659.68.92.05 3.99.85.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 2372 04/20/7 5:33 04/2/7 L726594 Serial_No:05075:29 Page 59 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726594 2372 04/20/7 5:33 04/2/7 p/mxylene.55 0.400 6.73.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 2.92 2.7 0.869 4Ethyltoluene 9.87 48.5,3,5Trimethylbenzene.3 55.6,2,4Trimethylbenzene 34.8 7 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Undecane unknown cycloalkane 5.8 J unknown benzene J Propanol 6 unknown benzene 8. J unknown benzene 6.8 J Nonane (C9) 5.8 unknown siloxane 5.6 J unknown benzene 8 J unknown alkane 5.5 J Page 60 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726594 2372 04/20/7 5:33 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 74 87 90 6040 6040 6040 Page 6 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L726595 98 Air 48,TO5 04/28/7 00:27 MB 04/20/7 5:46 04/2/7 Propylene 0.86 Dichlorodifluoromethane 0.294.45 0.989 Chloromethane 0.66.27 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 5.00 9.42 Vinyl bromide 0.874 Acetone 3.55.00 8.43 2.38 Acetonitrile 0.336 Trichlorofluoromethane.2 isopropyl Alcohol 0.874 2.5.23,Dichloroethene 0.793 Methylene chloride.60 5.56.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 62 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 0.39 0.273 0.664 242997B L72659.38 0.940 2.50.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 98 04/20/7 5:46 04/2/7 L726595 Serial_No:05075:29 Page 63 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726595 98 04/20/7 5:46 04/2/7 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Unknown 2.3 J Nonanal 7. unknown siloxane 2.0 J Decanal. Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 85 90 87 6040 6040 6040 Page 64 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L726596 77 Air 48,TO5 04/28/7 00:59 MB 04/20/7 5:47 04/2/7 Propylene 0.80.39 0.86 Dichlorodifluoromethane 0.44 2.05 0.989 Chloromethane 0.677.40 0.43,2Dichloro,,2,2tetrafluoroethane.40 Vinyl chloride 0.5,3Butadiene 0.442 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 6.8 5.00 6 9.42 Vinyl bromide 0.874 Acetone 60.0.00 43 2.38 Acetonitrile.08.8 0.336 Trichlorofluoromethane 0.230.29.2 isopropyl Alcohol 6.0 39.3.23,Dichloroethene 0.793 Methylene chloride 83.6 290.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 Page 65 of 00

2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene 5.46 7.8 9.22 0.459 5.6 0.728 8.33.2 242997B L72659 6. 64. 32.5.47 7.8 2.98 3.4 4.86.47 0.793.80 0.977.47 0.809 0.705.09 0.639.26 0.688 0.924.34 0.72.07 0.934 0.820 0.908 2.05 0.908.09 0.754 0.820.70.54.36 0.92 0.869 05/0/7 77 04/20/7 5:47 04/2/7 L726596 Serial_No:05075:29 Page 66 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726596 77 04/20/7 5:47 04/2/7 p/mxylene 4.20 0.400 8.2.74 Bromoform 2.07 Styrene.0 4.68 0.852,,2,2Tetrachloroethane.37 oxylene 2.45 0.6 0.869 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene 0.362.78 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20,2dichlorobenzene.20,2,4trichlorobenzene.48 Naphthalene.05 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL Nonane (C9) 4.3 Undecane 4.2 Unknown 3 J Pentane 53 Propanol, 2methyl 4.9 Butane 3.6 Dodecane (C2) 3 Acetic acid, butyl ester 3.6 Methyl Alcohol 36 Nonanal 5.5 Page 67 of 00

Serial_No:05075:29 242997B L72659 05/0/7 L726596 77 04/20/7 5:47 04/2/7 Tentatively Identified Compounds Units RDL Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 93 97 00 6040 6040 6040 Page 68 of 00

242997B Serial_No:05075:29 L72659 05/0/7 Method Blank Analysis Batch Quality Control Analytical Method: 48,TO5 Analytical Date: 04/27/7 4:33 for sample(s): 06 Batch: WG99874 Chlorodifluoromethane 0.707 Propylene 0.86 Propane 0.902 Dichlorodifluoromethane 0.989 Chloromethane 0.43,2Dichloro,,2,2tetrafluoroethane.40 Methanol 5.00 6.55 Vinyl chloride 0.5,3Butadiene 0.442 Butane 0.475 Acetaldehyde 2.50 4.50 Bromomethane 0.777 Chloroethane 0.528 Ethyl Alcohol 5.00 9.42 Dichlorofluoromethane 0.842 Vinyl bromide 0.874 Acrolein.5 Acetone.00 2.38 Acetonitrile 0.336 Trichlorofluoromethane.2 isopropyl Alcohol.23 Acrylonitrile.09 Pentane 0.590 Ethyl ether 0.606,Dichloroethene 0.793 Page 69 of 00

242997B Serial_No:05075:29 L72659 05/0/7 Method Blank Analysis Batch Quality Control Analytical Method: 48,TO5 Analytical Date: 04/27/7 4:33 for sample(s): 06 Batch: WG99874 tertbutyl Alcohol.52 Methylene chloride.74 3Chloropropene 0.626 Carbon disulfide 0.623,,2Trichloro,2,2Trifluoroethane.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 2Butanone.47 cis,2dichloroethene 0.793 Ethyl Acetate.80 Chloroform 0.977 Tetrahydrofuran.47 2,2Dichloropropane 0.924,2Dichloroethane 0.809 nhexane 0.705 Isopropyl Ether 0.836 EthylTertButylEther 0.836,,Trichloroethane.09,Dichloropropene 0.908 Benzene 0.639 Thiophene 0.688 Carbon tetrachloride.26 Cyclohexane 0.688 Page 70 of 00

242997B Serial_No:05075:29 L72659 05/0/7 Method Blank Analysis Batch Quality Control Analytical Method: 48,TO5 Analytical Date: 04/27/7 4:33 for sample(s): 06 Batch: WG99874 TertiaryAmyl Methyl Ether 0.836 Dibromomethane.42,2Dichloropropane 0.924 Bromodichloromethane.34,4Dioxane 0.72 Trichloroethene.07 2,2,4Trimethylpentane 0.934 Methyl Methacrylate 2.05 Heptane 0.820 cis,3dichloropropene 0.908 4Methyl2pentanone 2.05 trans,3dichloropropene 0.908,,2Trichloroethane.09 Toluene 0.754 2Methylthiophene 0.803,3Dichloropropane 0.924 2Hexanone 0.820 3Methylthiophene 0.803 Dibromochloromethane.70,2Dibromoethane.54 Butyl Acetate 2.38 Octane 0.934 Tetrachloroethene.36,,,2Tetrachloroethane.37 Chlorobenzene 0.92 Page 7 of 00

242997B Serial_No:05075:29 L72659 05/0/7 Method Blank Analysis Batch Quality Control Analytical Method: 48,TO5 Analytical Date: 04/27/7 4:33 for sample(s): 06 Batch: WG99874 Ethylbenzene 0.869 2Ethylthiophene 0.98 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869,2,3Trichloropropane.2 Nonane (C9).05 Isopropylbenzene Bromobenzene 0.793 ochlorotoluene.04 npropylbenzene pchlorotoluene.04 4Ethyltoluene,3,5Trimethylbenzene tertbutylbenzene.0,2,4trimethylbenzene Decane (C0).6 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20 secbutylbenzene.0,2,3trimethylbenzene pisopropyltoluene.0 Page 72 of 00

242997B Serial_No:05075:29 L72659 05/0/7 Method Blank Analysis Batch Quality Control Analytical Method: 48,TO5 Analytical Date: 04/27/7 4:33 for sample(s): 06 Batch: WG99874,2Dichlorobenzene.20 nbutylbenzene.0 Indane 0.967 Indene 0.95,2Dibromo3chloropropane.93 Undecane.28,2,4,5Tetramethylbenzene.0 Dodecane (C2).39,2,4Trichlorobenzene.48 Naphthalene.05,2,3Trichlorobenzene.48 Benzothiophene 2.74 Hexachlorobutadiene 2.3 2Methylnaphthalene.00 5.82 Methylnaphthalene.00 5.82 Tentatively Identified Compounds Units RDL No Tentatively Identified Compounds Page 73 of 00

Serial_No:05075:29 Lab Control Sample Analysis Batch Quality Control L72659 242997B 05/0/7 LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits Associated sample(s): 06 Batch: WG99873 Chlorodifluoromethane 88 7030 Propylene 07 7030 Propane 88 7030 Dichlorodifluoromethane 00 7030 Chloromethane 00 7030,2Dichloro,,2,2tetrafluoroethane 0 7030 Methanol 89 7030 Vinyl chloride 02 7030,3Butadiene 05 7030 Butane 97 7030 Bromomethane 99 7030 Chloroethane 02 7030 Ethyl Alcohol 94 7030 Dichlorofluoromethane 90 7030 Vinyl bromide 99 7030 Acrolein 86 7030 Acetone 0 7030 Acetonitrile 94 7030 Trichlorofluoromethane 03 7030 isopropyl Alcohol 02 7030 Acrylonitrile 95 7030 Page 74 of 00

Serial_No:05075:29 Lab Control Sample Analysis Batch Quality Control L72659 242997B 05/0/7 LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits Associated sample(s): 06 Batch: WG99873 Pentane 92 7030 Ethyl ether 89 7030,Dichloroethene 03 7030 tertbutyl Alcohol 96 7030 Methylene chloride 02 7030 3Chloropropene 06 7030 Carbon disulfide 95 7030,,2Trichloro,2,2Trifluoroethane 04 7030 trans,2dichloroethene 05 7030,Dichloroethane 08 7030 Methyl tert butyl ether 0 7030 Vinyl acetate 24 7030 2Butanone 00 7030 cis,2dichloroethene 07 7030 Ethyl Acetate 2 7030 Chloroform 05 7030 Tetrahydrofuran 97 7030 2,2Dichloropropane 90 7030,2Dichloroethane 02 7030 nhexane 00 7030 Isopropyl Ether 92 7030 Page 75 of 00

Serial_No:05075:29 Lab Control Sample Analysis Batch Quality Control L72659 242997B 05/0/7 LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits Associated sample(s): 06 Batch: WG99873 EthylTertButylEther 9 7030,,Trichloroethane 96 7030,Dichloropropene 97 7030 Benzene 00 7030 Carbon tetrachloride 0 7030 Cyclohexane 00 7030 TertiaryAmyl Methyl Ether 93 7030 Dibromomethane 95 7030,2Dichloropropane 0 7030 Bromodichloromethane 0 7030,4Dioxane 05 7030 Trichloroethene 02 7030 2,2,4Trimethylpentane 02 7030 Methyl Methacrylate 3 7030 Heptane 00 7030 cis,3dichloropropene 7030 4Methyl2pentanone 06 7030 trans,3dichloropropene 96 7030,,2Trichloroethane 04 7030 Toluene 04 7030,3Dichloropropane 97 7030 Page 76 of 00

Serial_No:05075:29 Lab Control Sample Analysis Batch Quality Control L72659 242997B 05/0/7 LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits Associated sample(s): 06 Batch: WG99873 2Hexanone 09 7030 Dibromochloromethane 0 7030,2Dibromoethane 07 7030 Butyl Acetate 98 7030 Octane 97 7030 Tetrachloroethene 06 7030,,,2Tetrachloroethane 96 7030 Chlorobenzene 06 7030 Ethylbenzene 06 7030 p/mxylene 06 7030 Bromoform 09 7030 Styrene 09 7030,,2,2Tetrachloroethane 06 7030 oxylene 07 7030,2,3Trichloropropane 98 7030 Nonane (C9) 92 7030 Isopropylbenzene 0 7030 Bromobenzene 96 7030 ochlorotoluene 97 7030 npropylbenzene 98 7030 pchlorotoluene 97 7030 Page 77 of 00

Serial_No:05075:29 Lab Control Sample Analysis Batch Quality Control L72659 242997B 05/0/7 LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits Associated sample(s): 06 Batch: WG99873 4Ethyltoluene 02 7030,3,5Trimethylbenzene 05 7030 tertbutylbenzene 00 7030,2,4Trimethylbenzene 7030 Decane (C0) 00 7030 Benzyl chloride 3 7030,3Dichlorobenzene 09 7030,4Dichlorobenzene 0 7030 secbutylbenzene 00 7030 pisopropyltoluene 95 7030,2Dichlorobenzene 0 7030 nbutylbenzene 03 7030,2Dibromo3chloropropane 02 7030 Undecane 09 7030 Dodecane (C2) 22 7030,2,4Trichlorobenzene 27 7030 Naphthalene 7030,2,3Trichlorobenzene 24 7030 Hexachlorobutadiene 24 7030 Page 78 of 00

Serial_No:05075:29 Lab Duplicate Analysis Batch Quality Control L72659 242997B 05/0/7 Native Sample Duplicate Sample Units RPD Qual RPD Limits Associated sample(s): 06 QC Batch ID: WG99875 QC Sample: L7265902 38 Propylene Dichlorodifluoromethane 0.30 0.292 3 Chloromethane 0.6 0.634,2Dichloro,,2,2tetrafluoroethane Vinyl chloride,3butadiene Acetaldehyde Bromomethane Chloroethane Ethyl Alcohol 9.2 9. Vinyl bromide Acetone 6.52 6.58 Acetonitrile Trichlorofluoromethane 0.239 0.222 7 isopropyl Alcohol 43.0 42.9 0,Dichloroethene Methylene chloride 0.752. 38 Q 3Chloropropene Carbon disulfide Page 79 of 00

Serial_No:05075:29 Lab Duplicate Analysis Batch Quality Control L72659 242997B 05/0/7 Native Sample Duplicate Sample Units RPD Qual RPD Limits Associated sample(s): 06 QC Batch ID: WG99875 QC Sample: L7265902 38,,2Trichloro,2,2Trifluoroethane trans,2dichloroethene,dichloroethane Methyl tert butyl ether Vinyl acetate 2Butanone cis,2dichloroethene Ethyl Acetate Chloroform Tetrahydrofuran,2Dichloroethane nhexane,,trichloroethane Benzene Carbon tetrachloride Cyclohexane,2Dichloropropane Bromodichloromethane,4Dioxane Page 80 of 00

Serial_No:05075:29 Lab Duplicate Analysis Batch Quality Control L72659 242997B 05/0/7 Native Sample Duplicate Sample Units RPD Qual RPD Limits Associated sample(s): 06 QC Batch ID: WG99875 QC Sample: L7265902 38 Trichloroethene 2,2,4Trimethylpentane Heptane cis,3dichloropropene 4Methyl2pentanone trans,3dichloropropene,,2trichloroethane Toluene 0.545 0.560 3 2Hexanone Dibromochloromethane,2Dibromoethane Tetrachloroethene Chlorobenzene Ethylbenzene p/mxylene Bromoform Styrene,,2,2Tetrachloroethane oxylene Page 8 of 00

Serial_No:05075:29 Lab Duplicate Analysis Batch Quality Control L72659 242997B 05/0/7 Native Sample Duplicate Sample Units RPD Qual RPD Limits Associated sample(s): 06 QC Batch ID: WG99875 QC Sample: L7265902 38 4Ethyltoluene,3,5Trimethylbenzene,2,4Trimethylbenzene Benzyl chloride,3dichlorobenzene,4dichlorobenzene,2dichlorobenzene,2,4trichlorobenzene Naphthalene Hexachlorobutadiene Page 82 of 00

Serial_No:05075:29 L72659 242997B 05/0/7 Canister and Flow Controller Information Samplenum Client ID Media ID Media Type Date Prepared Bottle Order Cleaning Batch ID Can Leak Check Initial Pressure (in. Hg) Pressure on Receipt (in. Hg) Flow Controler Leak Chk Flow Out ml/min Flow In ml/min % RPD L726590 204 0923 Flow 4 04/9/7 2404 Pass 4.0 3. L726590 204 204 2.7L Can 04/9/7 2404 L79870 Pass 29.9 8.4 L7265902 38 0492 Flow 5 04/9/7 2404 Pass 4.3 4.4 2 L7265902 38 38 2.7L Can 04/9/7 2404 L79870 Pass 29.9 0. L7265903 97 0764 Flow 5 04/9/7 2404 Pass 4.4 4.4 0 L7265903 97 97 2.7L Can 04/9/7 2404 L79870 Pass 29.9 0.8 L7265904 2200 047 Flow 5 04/9/7 2404 Pass 4.3 5.7 28 L7265904 2200 2200 2.7L Can 04/9/7 2404 L79870 Pass 29.9 9.4 L7265905 2303 0784 Flow 5 04/9/7 2404 Pass 4.3 4.3 0 L7265905 2303 2303 2.7L Can 04/9/7 2404 L79870 Pass 30.0 0.3 L7265906 224 0788 Flow 5 04/9/7 2404 Pass 4.4 4.3 2 L7265906 224 224 2.7L Can 04/9/7 2404 L79870 Pass 29.7.5 L7265907 2346 0074 Flow 4 04/9/7 2404 Pass 4.3 2.8 42 L7265907 2346 2346 2.7L CAN 04/9/7 2404 L79870 Pass 30.0 6.6 L7265908 2243 02 Flow 2 04/9/7 2404 Pass 4.2 4.4 5 Page 83 of 00

Serial_No:05075:29 L72659 242997B 05/0/7 Canister and Flow Controller Information Samplenum Client ID Media ID Media Type Date Prepared Bottle Order Cleaning Batch ID Can Leak Check Initial Pressure (in. Hg) Pressure on Receipt (in. Hg) Flow Controler Leak Chk Flow Out ml/min Flow In ml/min % RPD L7265908 2243 2243 2.7L Can 04/9/7 2404 L79870 Pass 29.7.2 L7265909 89 0952 Flow 5 04/9/7 2404 Pass 4.4 4.4 0 L7265909 89 89 2.7L Can 04/9/7 2404 L79870 Pass 29.7 0.7 L726590 2358 098 Flow 4 04/9/7 2404 Pass 4.0 3.3 9 L726590 2358 2358 2.7L CAN 04/9/7 2404 L79870 Pass 30.0 5.3 L72659 454 030 Flow 2 04/9/7 2404 Pass 4.5 4.4 2 L72659 454 454 2.7L Can 04/9/7 2404 L79870 Pass 30.0 9.2 L726592 205 0739 Flow 4 04/9/7 2404 Pass 4.2 4.0 5 L726592 205 205 2.7L Can 04/9/7 2404 L79870 Pass 29.9 7.5 L726593 60 044 Flow 4 04/9/7 2404 Pass 4.5 2.9 43 L726593 60 60 2.7L Can 04/9/7 2404 L79870 Pass 29.7 3.9 L726594 2372 0486 Flow 5 04/9/7 2404 Pass 4.5 3.2 34 L726594 2372 2372 2.7L Can 04/9/7 2404 L79870 Pass 29.9 3.7 L726595 98 0730 Flow 4 04/9/7 2404 Pass 4. 3.3 22 L726595 98 98 2.7L Can 04/9/7 2404 L79870 Pass 30.0 2.8 Page 84 of 00

Serial_No:05075:29 L72659 242997B 05/0/7 Canister and Flow Controller Information Samplenum Client ID Media ID Media Type Date Prepared Bottle Order Cleaning Batch ID Can Leak Check Initial Pressure (in. Hg) Pressure on Receipt (in. Hg) Flow Controler Leak Chk Flow Out ml/min Flow In ml/min % RPD L726596 77 0374 Flow 5 04/9/7 2404 Pass 4.2 4.0 5 L726596 77 77 2.7L Can 04/9/7 2404 L79870 Pass 29.9 4.7 Page 85 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L79870 CAN 2303 SHELF Air 48,TO5 04/7/7 6:03 RY 04/4/7 6:00 04/7/7 Chlorodifluoromethane 0.707 Propylene 0.86 Propane 0.902 Dichlorodifluoromethane 0.989 Chloromethane 0.43 Freon4.40 Methanol 5.00 6.55 Vinyl chloride 0.5,3Butadiene 0.442 Butane 0.475 Bromomethane 0.777 Chloroethane 0.528 Ethanol 5.00 9.42 Dichlorofluoromethane 0.842 Vinyl bromide 0.874 Acrolein.5 Acetone.00 2.38 Acetonitrile 0.336 Trichlorofluoromethane.2 Isopropanol.23 Acrylonitrile.09 Pentane 0.590 Ethyl ether 0.606,Dichloroethene 0.793 Tertiary butyl Alcohol.52 Page 86 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 L79870 CAN 2303 SHELF 04/4/7 6:00 04/7/7 Methylene chloride.74 3Chloropropene 0.626 Carbon disulfide 0.623 Freon3.53 trans,2dichloroethene 0.793,Dichloroethane 0.809 Methyl tert butyl ether 0.72 Vinyl acetate.00 3.52 2Butanone.47 cis,2dichloroethene 0.793 Ethyl Acetate.80 Chloroform 0.977 Tetrahydrofuran.47 2,2Dichloropropane 0.924,2Dichloroethane 0.809 nhexane 0.705 Diisopropyl ether 0.836 tertbutyl Ethyl Ether 0.836,,Trichloroethane.09,Dichloropropene 0.908 Benzene 0.639 Carbon tetrachloride.26 Cyclohexane 0.688 tertamyl Methyl Ether 0.836 Dibromomethane.42,2Dichloropropane 0.924 Bromodichloromethane.34,4Dioxane 0.72 Page 87 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 L79870 CAN 2303 SHELF 04/4/7 6:00 04/7/7 Trichloroethene.07 2,2,4Trimethylpentane 0.934 Methyl Methacrylate 2.05 Heptane 0.820 cis,3dichloropropene 0.908 4Methyl2pentanone 2.05 trans,3dichloropropene 0.908,,2Trichloroethane.09 Toluene 0.754,3Dichloropropane 0.924 2Hexanone 0.820 Dibromochloromethane.70,2Dibromoethane.54 Butyl acetate 2.38 Octane 0.934 Tetrachloroethene.36,,,2Tetrachloroethane.37 Chlorobenzene 0.92 Ethylbenzene 0.869 p/mxylene 0.400.74 Bromoform 2.07 Styrene 0.852,,2,2Tetrachloroethane.37 oxylene 0.869,2,3Trichloropropane.2 Nonane.05 Isopropylbenzene Bromobenzene 0.793 Page 88 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 L79870 CAN 2303 SHELF 04/4/7 6:00 04/7/7 2Chlorotoluene.04 npropylbenzene 4Chlorotoluene.04 4Ethyltoluene,3,5Trimethylbenzene tertbutylbenzene.0,2,4trimethylbenzene Decane.6 Benzyl chloride.04,3dichlorobenzene.20,4dichlorobenzene.20 secbutylbenzene.0 pisopropyltoluene.0,2dichlorobenzene.20 nbutylbenzene.0,2dibromo3chloropropane.93 Undecane.28 Dodecane.39,2,4Trichlorobenzene.48 Naphthalene.05,2,3Trichlorobenzene.48 Hexachlorobutadiene 2.3 Tentatively Identified Compounds Units RDL No Tentatively Identified Compounds Page 89 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 L79870 CAN 2303 SHELF 04/4/7 6:00 04/7/7 Internal Standard % Recovery Acceptance Criteria,4Difluorobenzene Bromochloromethane chlorobenzened5 98 95 92 6040 6040 6040 Page 90 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 Matrix: Anaytical Method: Analytical Date: Analyst: L79870 CAN 2303 SHELF Air 48,TO5SIM 04/7/7 6:03 RY 04/4/7 6:00 04/7/7 Volatile Organics in Air by SIM Mansfield Lab Dichlorodifluoromethane 0.989 Chloromethane 0.43 Freon4 0.050 0.349 Vinyl chloride 0.020 0.05,3Butadiene 0.020 0.044 Bromomethane 0.020 0.078 Chloroethane 0.020 0.053 Acetone.00 2.38 Trichlorofluoromethane 0.050 0.28 Acrylonitrile.09,Dichloroethene 0.020 0.079 Methylene chloride.74 Freon3 0.050 0.383 Halothane 0.050 0.404 trans,2dichloroethene 0.020 0.079,Dichloroethane 0.020 0.08 Methyl tert butyl ether 0.72 2Butanone.47 cis,2dichloroethene 0.020 0.079 Chloroform 0.020 0.098,2Dichloroethane 0.020 0.08,,Trichloroethane 0.020 0.09 Benzene 0.00 0.39 Carbon tetrachloride 0.020 0.26,2Dichloropropane 0.020 0.092 Page 9 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 L79870 CAN 2303 SHELF 04/4/7 6:00 04/7/7 Volatile Organics in Air by SIM Mansfield Lab Bromodichloromethane 0.020 0.34,4Dioxane 0.00 0.360 Trichloroethene 0.020 0.07 cis,3dichloropropene 0.020 0.09 4Methyl2pentanone 2.05 trans,3dichloropropene 0.020 0.09,,2Trichloroethane 0.020 0.09 Toluene 0.050 0.88 Dibromochloromethane 0.020 0.70,2Dibromoethane 0.020 0.54 Tetrachloroethene 0.020 0.36,,,2Tetrachloroethane 0.020 0.37 Chlorobenzene 0.00 0.46 Ethylbenzene 0.020 0.087 p/mxylene 0.040 0.74 Bromoform 0.020 0.207 Styrene 0.020 0.085,,2,2Tetrachloroethane 0.020 0.37 oxylene 0.020 0.087 Isopropylbenzene 4Ethyltoluene 0.020 0.098,3,5Trimethybenzene 0.020 0.098,2,4Trimethylbenzene 0.020 0.098 Benzyl chloride.04,3dichlorobenzene 0.020 0.20,4Dichlorobenzene 0.020 0.20 secbutylbenzene.0 pisopropyltoluene.0 Page 92 of 00

BATCH CANISTER CERTIFICATION CANISTER QC BAT Air Canister Certification Serial_No:05075:29 L7987 05/0/7 L79870 CAN 2303 SHELF 04/4/7 6:00 04/7/7 Volatile Organics in Air by SIM Mansfield Lab,2Dichlorobenzene 0.020 0.20 nbutylbenzene.0,2,4trichlorobenzene 0.050 0.37 Naphthalene 0.050 0.262,2,3Trichlorobenzene 0.050 0.37 Hexachlorobutadiene 0.050 0.533 Internal Standard % Recovery Acceptance Criteria,4difluorobenzene bromochloromethane chlorobenzened5 22 3 05 6040 6040 6040 Page 93 of 00

Serial_No:05075:29 242997B L72659 05/0/7 Sample Receipt and Container Information Were project specific reporting limits specified? YES Cooler Information Cooler N/A Custody Seal Present/Intact Container Information Container ID Container Type Cooler ph Temp deg C Pres Seal Analysis(*) L726590A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265902A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265903A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265904A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265905A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265906A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265907A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265908A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L7265909A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L726590A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L72659A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L726592A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L726593A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L726594A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L726595A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) L726596A Canister 2.7 Liter N/A N/A N/A Y Absent TO5LL(30) Page 94 of 00 *Values in parentheses indicate holding time in days

Serial_No:05075:29 Acronyms L72659 242997B 05/0/7 GLOSSARY EDL EPA LCS LCSD LFB MS MSD NA PA/DPA NI NP RPD SRM STLP TIC Estimated Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the reporting limit (). The EDL includes any adjustments from dilutions, concentrations or moisture content, where applicable. The use of EDLs is specific to the analysis of PAHs using SolidPhase Microextraction (SPME). Environmental Protection Agency. Laboratory Control Sample: A sample matrix, free from the analytes of interest, spiked with verified known amounts of analytes or a material containing known and verified amounts of analytes. Laboratory Control Sample Duplicate: Refer to LCS. Laboratory Fortified Blank: A sample matrix, free from the analytes of interest, spiked with verified known amounts of analytes or a material containing known and verified amounts of analytes. Method Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the reporting limit (). The includes any adjustments from dilutions, concentrations or moisture content, where applicable. Matrix Spike Sample: A sample prepared by adding a known mass of target analyte to a specified amount of matrix sample for which an independent estimate of target analyte concentration is available. Matrix Spike Sample Duplicate: Refer to MS. Not Applicable. Not Calculated: Term is utilized when one or more of the results utilized in the calculation are nondetect at the parameter's reporting unit. NNitrosodiphenylamine/Diphenylamine. Not Ignitable. NonPlastic: Term is utilized for the analysis of Atterberg Limits in soil. Reporting Limit: The value at which an instrument can accurately measure an analyte at a specific concentration. The includes any adjustments from dilutions, concentrations or moisture content, where applicable. Relative Percent Difference: The results from matrix and/or matrix spike duplicates are primarily designed to assess the precision of analytical results in a given matrix and are expressed as relative percent difference (RPD). Values which are less than five times the reporting limit for any individual parameter are evaluated by utilizing the absolute difference between the values; although the RPD value will be provided in the report. Standard Reference Material: A reference sample of a known or certified value that is of the same or similar matrix as the associated field samples. Semidynamic Tank Leaching Procedure per EPA Method 35. Tentatively Identified Compound: A compound that has been identified to be present and is not part of the target compound list (TCL) for the method and/or program. All TICs are qualitatively identified and reported as estimated concentrations. Footnotes The reference for this analyte should be considered modified since this analyte is absent from the target analyte list of the original method. Terms Total: With respect to Organic analyses, a 'Total' result is defined as the summation of results for individual isomers or Aroclors. If a 'Total' result is requested, the results of its individual components will also be reported. This is applicable to 'Total' results for methods 8260, 808 and 8082. Analytical Method: Both the document from which the method originates and the analytical reference method. (Example: EPA 8260B is shown as,8260b.) The codes for the reference method documents are provided in the References section of the Addendum. Data s A B Spectra identified as "Aldol Condensation Product". The analyte was detected above the reporting limit in the associated method blank. Flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (0x) the concentration found in the blank. For MCPrelated projects, flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (0x) the concentration found in the blank. For DODrelated projects, flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (0x) the concentration found in the blank A the analyte was detected above onehalf the reporting limit (or above the reporting limit for common lab contaminants) in the associated method blank. For Airrelated projects, flag only applies to associated field samples that have detectable concentrations of the analyte above the reporting limit. For related projects (excluding Air), flag only applies to associated field samples that have detectable concentrations of the analyte, which was detected above the reporting limit in the associated method blank or above five times the Report Format: Data Usability Report Page 95 of 00

Serial_No:05075:29 L72659 242997B 05/0/7 Data s C D E G H I M P Q R RE S J reporting limit for common lab contaminants (Phthalates, Acetone, Methylene Chloride, 2Butanone). Coelution: The target analyte coelutes with a known lab standard (i.e. surrogate, internal standards, etc.) for coextracted analyses. Concentration of analyte was quantified from diluted analysis. Flag only applies to field samples that have detectable concentrations of the analyte. Concentration of analyte exceeds the range of the calibration curve and/or linear range of the instrument. The concentration may be biased high due to matrix interferences (i.e, coelution) with nontarget compound(s). The result should be considered estimated. The analysis of ph was performed beyond the regulatoryrequired holding time of 5 minutes from the time of sample collection. The lower value for the two columns has been reported due to obvious interference. Reporting Limit () exceeds the MCP CAM Reporting Limit for this analyte. Presumptive evidence of compound. This represents an estimated concentration for Tentatively Identified Compounds (TICs), where the identification is based on a mass spectral library search. The RPD between the results for the two columns exceeds the methodspecified criteria. The quality control sample exceeds the associated acceptance criteria. For DODrelated projects, LCS and/or Continuing Calibration Standard exceedences are also qualified on all associated sample results. Note: This flag is not applicable for matrix spike recoveries when the sample concentration is greater than 4x the spike added or for batch duplicate RPD when the sample concentrations are less than 5x the. (Metals only.) Analytical results are from sample reanalysis. Analytical results are from sample reextraction. Analytical results are from modified screening analysis. Estimated value. This represents an estimated concentration for Tentatively Identified Compounds (TICs). Not detected at the reporting limit () for the sample. Report Format: Data Usability Report Page 96 of 00

Serial_No:05075:29 L72659 242997B 05/0/7 REFEREES 48 Compendium of Methods for the Determination of Toxic Organic Compounds in Ambient Air. Second Edition. EPA/6/R96/00b, January 999. LIMITATION OF LIABILITIES Alpha Analytical performs services with reasonable care and diligence normal to the analytical testing laboratory industry. In the event of an error, the sole and exclusive responsibility of Alpha Analytical shall be to reperform the work at it's own expense. In no event shall Alpha Analytical be held liable for any incidental, consequential or special damages, including but not limited to, damages in any way connected with the use of, interpretation of, information or analysis provided by Alpha Analytical. We strongly urge our clients to comply with EPA protocol regarding sample volume, preservation, cooling, containers, sampling procedures, holding time and splitting of samples in the field. Page 97 of 00

Serial_No:05075:29 Alpha Analytical, Inc. ID No.:7873 Facility: Companywide Revision 0 Department: Quality Assurance Published Date: /6/207 :00:05 AM Title: Certificate/Approval Program Summary Page of Certification Information The following analytes are not included in our Primary NELAP Scope of Accreditation: Westborough Facility EPA 624: m/pxylene, oxylene EPA 8260C: NPW:,2,4,5Tetramethylbenzene; 4Ethyltoluene, Azobenzene; SCM: Iodomethane (methyl iodide), Methyl methacrylate,,2,4,5 Tetramethylbenzene; 4Ethyltoluene. EPA 8270D: NPW: Dimethylnaphthalene,,4Diphenylhydrazine; SCM: Dimethylnaphthalene,,4Diphenylhydrazine. EPA 300: DW: Bromide EPA 6860: NPW and SCM: Perchlorate EPA 900: NPW and SCM: Amenable Cyanide Distillation EPA 902B: NPW: Total Cyanide EPA 9050A: NPW: Specific Conductance SM3500: NPW: Ferrous Iron SM4500: NPW: Amenable Cyanide, Dissolved Oxygen; SCM: Total Phosphorus, TKN, NO2, NO3. SM530C: DW: Dissolved Organic Carbon Mansfield Facility SM 40D: TSS EPA 3005A NPW EPA 8082A: NPW: PCB:, 5, 3, 87,0, 0, 4, 5, 53, 80, 83, 87. EPA TO5: Halothane, 2,4,4Trimethyl2pentene, 2,4,4Trimethylpentene, Thiophene, 2Methylthiophene, 3Methylthiophene, 2Ethylthiophene,,2,3Trimethylbenzene, Indan, Indene,,2,4,5Tetramethylbenzene, Benzothiophene, Methylnaphthalene. Biological Tissue Matrix: EPA 3050B The following analytes are included in our Massachusetts DEP Scope of Accreditation Westborough Facility: Drinking Water EPA 300.0: NitrateN, Fluoride, Sulfate; EPA 353.2: NitrateN, NitriteN; SM4500NO3F: NitrateN, NitriteN; SM4500FC, SM4500CE, EPA 80., SM230B, SM4500ClD, SM2320B, SM40C, SM4500HB EPA 332: Perchlorate; EPA 524.2: THMs and VOCs; EPA 504.: EDB, DBCP. Microbiology: SM9B; SM9223P/A, SM9223BColilertQT,SM9222D. NonPotable Water SM4500H,B, EPA 20., SM0B, SM40C, SM2320B, SM4500CLE, SM4500FBC, SM4500NH3BH, EPA 350.: AmmoniaN, LACHAT 007 06B: AmmoniaN, SM4500NO3F, EPA 353.2: NitrateN, EPA 35., SM4500PE, SM4500PB, E, SM4500SO4E, SM5220D, EPA 40.4, SM520B, SM530C, SM4500CLD, EPA 664, EPA 420., SM4500CE, SM40D. EPA 624: Volatile Halocarbons & Aromatics, EPA 608: Chlordane, Toxaphene, Aldrin, alphabhc, betabhc, gammabhc, deltabhc, Dieldrin, DDD, DDE, DDT, Endosulfan I, Endosulfan II, Endosulfan sulfate, Endrin, Endrin Aldehyde, Heptachlor, Heptachlor Epoxide, PCBs EPA 6: SVOC (Acid/Base/Neutral Extractables), EPA 600/48045: PCBOil. Microbiology: SM9223BColilertQT; EnterolertQT, SM922E. Mansfield Facility: Drinking Water EPA 200.7: Ba, Be, Cd, Cr, Cu, Ni, Na, Ca. EPA 200.8: Sb, As, Ba, Be, Cd, Cr, Cu, Pb, Ni, Se, TL. EPA 245. Hg. NonPotable Water EPA 200.7: Al, Sb, As, Be, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, K, Se, Ag, Na, Sr, TL, Ti, V, Zn. EPA 200.8: Al, Sb, As, Be, Cd, Cr, Cu, Pb, Mn, Ni, Se, Ag, TL, Zn. EPA 245. Hg. SM2340B For a complete listing of analytes and methods, please contact your Alpha Project Manager. Document Type: Form PreQualtrax Document ID: 083 Page 98 of 00

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