Ms. Nina Nazarian July 19, 2017 Town Administrator Project No Town of Princeton Document No Town Hall Drive Princeton, MA 01541

Transcription

1 997 Millbury Street, Unit 6 Worcester, MA 0607 Telephone Fax Ms. Nina Nazarian July 9, 207 Town Administrator Project No Town of Princeton Document No Town Hall Drive Princeton, MA 054 RE: April 207 Indoor Air and Wipe Sampling for PCB s Thomas Prince School Dear Ms. Nazarian, On April 9, 207, indoor air and wipe sampling was conducted by ATC Group Services LLC (ATC) at the Thomas Prince School. The indoor air samples were analyzed by Alpha Analytical of Westborough, MA. Wipe samples were analyzed by EurofinsSpectrum Analytical of Agawam, MA. The analytical results for indoor were favorable, however, low concentrations of Polychlorinated Biphenyls (PCB s) were detected in three indoor air samples (all well below EPA Guidance levels). PCB were detected in one surface wipe sample collected from an exterior surface of the school building. The results are discussed below. Summaries of the results are presented in the attached tables. Very low concentrations of PCB were detected in indoor air sampled from three classrooms. The results are presented in units of nanograms per cubic meter (ng/m 3 ), which is equal to approximately one billionth of a gram. Note that the levels for which EPA currently advises comparison to are: 200 ng/m 3 for children of age 36 years; 0 ng/m 3 for children of age 62 years; 500 ng/m 3 for children of age 25 years; 600 ng/m 3 for children of age 59 years; and 500 ng/m 3 9 years and older. A concentration of 4.98 ng/m 3 was detected in the indoor air of classroom 00. In classroom 205 two indoor air samples were collected, of which one sample was a duplicate. A concentration of 9.8 ng/m 3 was detected in the sample labelled duplicate, while no detection above the laboratory reporting limit of 4.62 ng/m 3 was reported for the other sample. In classroom 2, a concentration of 2.39 ng/m 3 was detected in the indoor air. One surface wipe sample, collected from an epoxy coated exterior concrete column located outside of rooms 0002, contained 4.47 micrograms per 00 square centimeters (ug/00 cm 2 ) as compared to the EPA acceptable risk based cleanup standard concentration of ug/00 cm 2.

2 Project No /Document No July 9, 207 April 207 Indoor Air and Wipe Sampling for PCB s Page 2 of 2 Refer to the attached Figure for a layout of the school, Table for an historical summary of the results of indoor air sampling performed at the school and Table 2 for a summary of the wipe sampling performed during April 207. Table 3 presents information of the volume of air samples collected and Table 4 presents information for the conversion of laboratory data from ng/sample cartridge to ng/m 3 of air. The laboratory analytical report is provided as Attachment A. ATC plans on collecting additional exterior wipe samples this month to verify the current exterior sample result that was detected above ug/00 cm 2. Please don t hesitate to contact me with any questions. Sincerely, ATC Group Services LLC Charles E. Klingler, LSP Worcester Branch Manager cc Shannon Conley, Principal at Thomas Prince School CEK/kab Attachments

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5 TABLES

6 Thomas Prince School 70 Sterling Road Princeton, Massachusetts Table IOOR AIR SAMPLING RESULTS USEPA Method TO0A Indoor Air USEPA Method TO0A/680/8082 Polychlorinated Biphenyls Method Aroclor (EPA Method 8082) Homolog's (EPA Method 680) Sample Location Sampling Date Aroclor (8082) Homolog's (680) Notes Sample Designation Total Aroclor Total Homolog's Monochlorobiphenyl Dichlorobiphenyl Trichlorobiphenyl Tetrachlorobiphenyl Pentachlorobiphenyl Hexachlorobiphenyl Heptachlorobiphenyl Octachlorobiphenyl Nonachlorobiphenyl Decachlorobiphenyl 8/20/20 x x < 47.8 < 47.8 < < 23.9 < 23.9 < 23.9 < 35.9 < 35.9 < 59.8 < /22/202 x < <4.94 <4.94 <4.94 <7.40 <7.40 <2.3 <2.3 Classroom 00 2/28/202 x RM 00 0 <2.7 <2.7 <2.7 <4.33 <4.33 <4.33 <6.49 <6.49 <0.8 <0.8 Classroom 02 Classroom 04 Classroom 06 Classroom 08 Classroom 0 Cafeteria 2/23/203 x 0 <2.45 <2.45 <2.45 <4.89 <4.89 <4.89 <7.34 <7.34 <2.2 <2.2 4/9/207 x <4.6 <4.6 <4.6 < <4.6 <4.6 <4.6 <4.6 <4.6 8/20/20 x RM < 48 < 48 2/28/202 x RM 02 0 <2.6 <2.6 <2.6 <4.3 <4.3 <4.3 <6.47 <6.47 <0.8 <0.8 //204 x RM 02 <2.50 <2.50 <2.50 <5.0 <5.0 <5.0 <7.5 <7.5 <2.5 <2.5 8/20/20 x RM < 48 < 48 2/28/202 x RM 04 0 <2.6 <2.6 <2.6 <4.3 <4.3 <4.3 <6.47 <6.47 <0.8 <0.8 //204 x RM 04 <2.65 <2.65 <2.65 <5. <5. <5. <7.95 <7.95 <3.3 <3.3 4/9/207 x RM 04 <4.56 <4.56 <4.56 <4.56 <4.56 <4.56 <4.56 <4.56 <4.56 <4.56 8/20/20 x RM < 47.9 < /22/20 x RM < < 4.93 < 7.39 < 7.39 < 2.3 < 2.3 3/22/202 x RM < <4.94 <4.94 <4.94 <7.4 <7.4 <2.4 <2.4 2/28/202 x RM 06 0 <2.4 <2.4 <2.4 <4.27 <4.27 <4.27 <6.4 <6.4 <0.7 <0.7 2/23/203 x RM 06 0 <2.40 <2.40 <2.40 <4.80 <4.80 <4.80 <7.20 <7.20 <2.0 <2.0 2/6/206 x RM 08 "B" 0 <2.22 <2.22 <2.22 <4.80 <4.44 <4.44 <6.66 <6.66 <. <. 8/20/20 x RM < 48.7 < /20/20 x RM 08A < 49.9 < 49.9 /8/20 x RM < <5 <5 <5 <7.5 <7.5 <2.5 <2.5 2/28/202 x RM 08 0 <2.37 <2.37 <2.37 <4.74 <4.74 <4.74 <7. <7. <.8 <.8 2/6/206 x RM 08 "A" 0 <2.22 <2.22 <2.22 <4.44 <4.44 <4.44 <6.66 <6.66 <. <. 8/20/20 x RM < 49.2 < /28/202 x RM 0 0 <2.43 <2.43 <2.43 <4.85 <4.85 <4.85 <7.28 <7.28 <2. <2. 2/23/203 x RM 0 0 <2.43 <2.43 <2.43 <4.87 <4.87 <4.87 <7. <7. <2.2 <2.2 4/9/207 x RM 0 0 <4.53 <4.53 <4.53 <4.53 <4.53 <4.53 <4.53 <4.53 <4.53 <4.53 8/20/20 x CAF/AUD A < 44.3 < /20/20 x CAF/AUD B < 48.4 < /20/20 x CAF/AUD DUP < 48.4 < /22/20 x CAF/AUD < 2.5 < < 5.0 < 5.0 < 5.0 < 7.52 < 7.52 < 2.5 < 2.5 9/22/20 x CAF/AUD DUP 0.8 < 2.4 < < 4.8 < 4.8 < 7.2 < 7.2 < 2 < 2 3/22/202 x Cafeteria 0 <2.48 <2.48 <2.48 <4.95 <4.95 <4.95 <7.43 <7.43 <2.4 <2.4 2/23/203 x Cafeteria 0 <2.5 <2.5 <2.5 <5.03 <5.03 <5.03 <7.54 <7.54 <2.6 <2.6 //204 x RMCaf <2.47 <2.47 <2.47 <4.94 <4.94 <4.94 <7.40 <7.40 <2.3 <2.3 2/6/206 x Cafeteria <2.43 <2.43 <2.43 <4.87 <4.87 <4.87 <7. <7. <2.22 <2.22 4/9/207 x Cafeteria <4.55 <4.55 <4.55 <4.55 <4.55 <4.55 <4.55 <4.55 <4.55 <4.55 Page of 4 7/9/207

7 Thomas Prince School 70 Sterling Road Princeton, Massachusetts Table IOOR AIR SAMPLING RESULTS USEPA Method TO0A Indoor Air USEPA Method TO0A/680/8082 Polychlorinated Biphenyls Method Aroclor (EPA Method 8082) Homolog's (EPA Method 680) Sample Location Sampling Date Aroclor (8082) Homolog's (680) Notes Sample Designation Total Aroclor Total Homolog's Monochlorobiphenyl Dichlorobiphenyl Trichlorobiphenyl Tetrachlorobiphenyl Pentachlorobiphenyl Hexachlorobiphenyl Heptachlorobiphenyl Octachlorobiphenyl Nonachlorobiphenyl Decachlorobiphenyl 8//20 x < /22/202 x < <4.92 <7.38 <7.38 <2.3 <2.3 2/28/202 x 0 <2.36 <2.36 <2.36 <4.72 <4.72 <4.72 <7.08 <7.08 <.8 <.8 Classroom 20 RM 20 2/23/203 x 0 <2.42 <2.42 <2.42 <4.83 <4.83 <4.83 <7.25 <7.25 <2. <2. 2/6/206 x 0 <2.36 <2.36 <2.36 <4.72 <4.72 <4.72 <7.08 <7.08 <.8 <.8 4/9/207 x 0 <4.60 <4.60 <4.60 <4.60 <4.60 <4.60 <4.60 <4.60 <4.60 <4.60 8//20 x < /22/202 x < <4.99 <7.49 <7.49 <2.5 <2.5 Classroom 203 RM 203 2/28/202 x 0 <2.32 <2.32 <2.32 <4.63 <4.63 <4.63 <6.94 <6.94 <.6 <.6 Classroom 205 Classroom 209 Classroom 207 //204 x <2.48 <2.48 <2.48 <4.96 <4.96 <4.96 <7.43 <7.43 <2.4 <2.4 8//20 x < /22/202 x < < <4.88 <7.3 <7.3 <2.2 <2.2 2/28/202 x 0 <2.35 <2.35 <2.35 <4.70 <4.70 <4.70 <7.04 <7.04 <.7 < /23/203 x 0 <2.47 <2.47 <2.47 <4.94 <4.94 <4.94 <7.40 <7.40 <2.3 <2.3 2/6/206 x 0 <2.35 <2.35 <2.35 <4.70 <4.70 <4.70 <7.04 <7.04 <.7 <.7 4/9/207 x 0 <2.35 <2.35 <2.35 <4.70 <4.70 <4.70 <7.04 <7.04 <.7 <.7 4/9/207 x 205 DUP <4.62 <4.62 < <4.62 <4.62 <4.62 <4.62 <4.62 8//20 x < /22/202 x < <4.98 <7.47 <7.47 <2.4 <2.4 RM 207 2/28/202 x 0 <2.32 <2.32 <2.32 <4.63 <4.63 <4.63 <6.94 <6.94 <.6 <.6 //204 x <2.47 <2.47 <2.47 <4.94 <4.94 <4.94 <7.4 <7.4 <2.3 <2.3 //204 x RM 207 DUP <2.54 <2.54 <2.54 <5.07 <5.07 <5.07 <7.6 <7.6 <2.7 <2.7 8//20 x < /22/20 x RM < 7.45 < 7.45 < 2.4 < 2.4 /8/20 x RM <7.5 <7.5 <2.5 <2.5 3/22/202 x RM < <7.3 <7.3 <2.2 <2.2 3/22/202 x RM 209 DUP < <4.9 <7.35 <7.35 <2.2 <2.2 2/28/202 x RM <2. <2. <2. <4.6 <4.6 <4.6 <6.9 <6.9 <.5 <.5 2/28/202 x RM 209 DUPLICATE 0 <2. <2. <2. <4.6 <4.6 <4.6 <6.9 <6.9 <.5 <.5 2/23/203 x RM <2.40 <2.40 <2.40 <4.8 <4.8 <4.8 <7.2 <7.2 <2.0 <2.0 2/23/203 x RM 209 DUPLICATE 0 <2.4 <2.4 <2.4 <4.8 <4.8 <4.8 <7.22 <7.22 <2.0 <2.0 2/6/206 x RM <2.37 <2.37 <2.37 <4.74 <4.74 <4.74 <7.0 <7.0 <.8 <.8 2/6/206 x RM 209 DUPLICATE 0 <2.44 <2.44 <2.44 <4.89 <4.89 <4.89 <7.33 <7.33 <2.2 <2.2 8//20 x < /22/202 x < <4.86 <7.29 <7.29 <2.2 <2.2 Classroom 2 2/28/202 x 2 0 <2.28 <2.28 <2.28 <4.57 <4.57 <4.57 <6.85 <6.85 <.4 <.4 //204 x <2.46 <2.46 <2.46 <4.92 <4.92 <4.92 <7.38 <7.38 <2.3 <2.3 4/9/207 x 2.38 <4.65 <4.65 <4.65 < <4.65 <4.65 <4.65 <4.65 <4.65 Page 2 of 4 7/9/207

8 Thomas Prince School 70 Sterling Road Princeton, Massachusetts Table IOOR AIR SAMPLING RESULTS USEPA Method TO0A Indoor Air USEPA Method TO0A/680/8082 Polychlorinated Biphenyls Method Aroclor (EPA Method 8082) Homolog's (EPA Method 680) Sample Location Sampling Date Aroclor (8082) Homolog's (680) Notes Sample Designation Total Aroclor Total Homolog's Monochlorobiphenyl Dichlorobiphenyl Trichlorobiphenyl Tetrachlorobiphenyl Pentachlorobiphenyl Hexachlorobiphenyl Heptachlorobiphenyl Octachlorobiphenyl Nonachlorobiphenyl Decachlorobiphenyl Library Computer Lab Home Economics 2 Off Library 3 Office Common Area 3 Kitchen 8/20/20 x LIBRARY A < 47.5 < /20/20 x LIBRARY B < 49.7 < /22/20 x LIBRARY < < 4.88 < 4.88 < 4.88 < 7.32 < 7.32 < 2.2 < 2.2 3/22/202 x LIBRARY <2.48 < <4.96 <4.96 <4.96 <7.44 <7.44 <2.4 <2.4 2/23/203 x LIBRARY 0 <2.44 <2.44 <2.44 <4.88 <4.88 <4.88 <7.3 <7.3 <2.2 <2.2 8/20/20 x RM < 49.6 < /22/20 x RM < 4.97 < 4.97 < 7.45 < 7.45 < 2.4 < 2.4 8/20/20 x x RM <48.9 < 48.9 < 48.9 < 2.2 < 2.2 < 2.2 < 24.4 < 24.4 < 24.4 < 36.7 < 36.7 < 6. < 6. 8/20/20 x RM 2 (DUP) 0 <66.9 <66.9 < 66.9 < /20/20 x RM < 50.3 < /22/20 x RM < < 4.93 < 4.93 < 7.39 < 7.39 < 2.3 < 2.3 8/20/20 x x RM < 49.3 < 49.3 < < 2.3 < 24.6 < 24.6 < 24.6 < 37 < 37 < 6.6 < 6.6 9/22/20 x RM < 2.45 < < 4.9 < 4.9 < 4.9 < 7.36 < 7.36 < 2.3 < 2.3 8/20/20 x KITCHEN < 47.9 < /22/20 x KITCHEN < < 4.95 < 4.95 < 7.42 < 7.42 < 2.3 < 2.3 3/22/202 x KITCHEN < <2.4 <4.82 <4.82 <4.82 <7.23 <7.23 <2.0 <2.0 Stage Area 8/20/20 x STAGE < 48.8 < 48.8 Staff Lounge Off Kitchen 8/20/20 x T LOUNGE < 48.4 < 48.4 Electrical Room 8/20/20 x ELEC ROOM < 48. < Corridor North 00 Corridor South 8/20/20 x 00 COR A < 47.7 < /22/20 x 00 COR N < 4.93 < 7.4 < 7.4 < 2.3 < 2.3 8/20/20 x 00 COR B < 49.6 < /22/20 x 00 COR S < < 4.96 < 4.96 < 7.44 < 7.44 < 2.4 < 2.4 Central Corridor West 8/20/20 x MID COR A 0 < 49 < 49 < 49 < 49 Central Corridor East 200 Corridor North 200 Corridor South 9/22/20 x CENTRAL COR MID < 4.93 < 7.4 < 7.4 < 2.3 < 2.3 8/20/20 x MID COR B < 49.9 < /22/20 x CENTRAL COR E < < 5.03 < 5.03 < 5.03 < 7.55 < 7.55 < 2.6 < 2.6 8/20/20 x 200 COR A < 50. < 50. 9/22/20 x 200 COR N < 4.9 < 4.9 < 7.36 < 7.36 < 2.3 < 2.3 8/20/20 x 200 COR B < /22/20 x 200 COR S < 4.9 < 7.34 < 7.34 < 2.2 < 2.2 Storage Room Opposite 2 8/20/20 x RM < South Corridor West 8/20/20 x SOUTH COR A < 49.2 < 49.2 < 49.2 South Corridor East 8/20/20 x SOUTH COR B < 49.4 < 49.4 < 49.4 Kindergarten 8/20/20 x x RM 0 < 50. < 50. < 50. < 50. < 2.5 < 2.5 < 2.5 < 25. < 25. < 25. < 37.6 < 37.6 < 62.6 < /20/20 x x RM < 49.5 < 49.5 < 49.5 < 2.4 < 2.4 < 2.4 < 24.8 < 24.8 < 24.8 < 37. < 37. < 6.9 < 6.9 x RM 2 DUP < 48.5 < 48.5 < Corridor North 8/20/20 x 0 COR A 0 < 49.7 < 49.7 < 49.7 < 49.7 Page 3 of 4 7/9/207

9 Thomas Prince School 70 Sterling Road Princeton, Massachusetts Table IOOR AIR SAMPLING RESULTS USEPA Method TO0A Indoor Air USEPA Method TO0A/680/8082 Polychlorinated Biphenyls Method Aroclor (EPA Method 8082) Homolog's (EPA Method 680) Sample Location Sampling Date Aroclor (8082) Homolog's (680) Notes Sample Designation Total Aroclor Total Homolog's Monochlorobiphenyl Dichlorobiphenyl Trichlorobiphenyl Tetrachlorobiphenyl Pentachlorobiphenyl Hexachlorobiphenyl Heptachlorobiphenyl Octachlorobiphenyl Nonachlorobiphenyl Decachlorobiphenyl 0 Corridor South 8/20/20 x 0 COR B 0 <49.9 < 49.9 < 49.9 < 49.9 North Corridor West 8/20/20 x ENT COR B < 50. < 50. < 50. North Corridor East 8/20/20 x ENT COR A 0 <50.3 < 50.3 < 50.3 < 50.3 Classroom 3 8/20/20 x x RM < 49.8 < 49.8 < 49.8 < 2.4 < 2.4 < 2.4 < 24.9 < 24.9 < 24.9 < 37.3 < 37.3 < 62.2 < 62.2 Classroom 8 8/20/20 x x RM 8 < 49 < 49 < 49 < 49 < 2.3 < 2.3 < 2.3 < 24.5 < 24.5 < 24.5 < 36.8 < 36.8 < 6.3 < 6.3 Gymnasium West 8/20/20 x GYM A < 48.4 < 48.4 < 48.4 Gymnasium East 8/20/20 x x GYM B < 48.9 < 48.9 < 48.9 < 2.2 < 2.2 < 2.2 < 24.5 < 24.5 < 24.5 < 36.7 < 36.7 < 6.2 < 6.2 Science Room 8/20/20 x x RM 402 < 50.5 < 50.5 < 50.5 < 50.5 < 2.6 < 2.6 < 2.6 < 25.2 < 25.2 < 25.2 < 37.8 < 37.8 < 63. < 63. Art & Industry Room 8/20/20 x x RM 404 < 48.7 < 48.7 < 48.7 < 48.7 < 2.2 < 2.2 < 2.2 < 24.4 < 24.4 < 24.4 < 36.5 < 36.5 < 60.9 < 60.9 Outside (NW Cnr. of Bldg.) 8/20/20 x OUTSIDE A 0 < 5.7 < 5.7 < 5.7 < 5.7 Outside (S. Courtyard) 8/20/20 x OUTSIDE B 0 < 48.6 < 48.6 < 48.6 < /22/20 x OUTSIDE S COURTYARD 0 < 2.42 < 2.42 < 2.42 < 4.84 < 4.84 < 4.84 < 7.26 < 7.26 < 2. < 2. Notes: Concentrations in nanograms (billionth of a gram) per cubic meter (ng/m3). 08/0/ Initial IAS round limited to 200wing classrooms "<" or "" denotes = Not Detected at laboratory reporting limit. 08/20/ 2nd IAS round comprehensive round throughout building Yellow shading denotes most recent indoor air sampling results = Denotes sample dulicate. Sample result was at RL of 4.62 ng/m3 Post Abatement Indoor Air Sample Results Blue Highlight 09/22/ 3rd IAS round targeted to show effects of initial "cleaning". /08/ 4th IAS round Limited to classrooms 209 & 08. 3/22/2 5th IAS Round Post Abatement 200Wing, Cafeteria & Kitchen 2/28/2 6th IAS Round Post Abatement 00Wing 2/23/3 7th IAS Round year following completed Abatement //4 8th IAS Round 2 years following completed Abatement 2/6/6 9th IAS Round 3 years following completed Abatement 4/9/7 0th IAS Round 4 years following completed Abatement EPA Calculated Exposure Levels for Evaluating PCB's in School Indoor Air (ng/m 3 ), Health Protective GUIDANCE Values Age (years) ng/m 3 <2 00 2<3 00 3< <2 0 Elementary School 2<5 500 Middle School 5<9 600 High School Adult Page 4 of 4 7/9/207

10 Town of Princeton Thomas Prince School 70 Sterling Road Princeton, Massachusetts Table ANNUAL CLASSROOM WIPE SAMPLE RESULTS Quantitative Analysis Surface Wipes USEPA Method 3540C 8082 SAMPLE ID Date Aroclor Concentration ug/00cm 2 Notes SAMPLE LOCATION and COMMENTS 20 Int 4/9/207 < th block up, Middle Center of block 20 Ext 4/9/207 <0.2 Brick above air intake vent, bricks 3 & 4 from north side of vent 203 Int 4/9/207 <0.2 2 st block up, Middle Center of block 203 Ext 4/9/207 <0.2 S window, N concrete column, S face, 5' from ground 205 Int 4/9/207 < nd block up, Middle Center of block 205 Ext 4/9/207 <0.2 S Window, center of pebbled sill, horizontal surface 207 Int 4/9/207 < th block up Middle North side of block 207 Ext 4/9/207 <0.2 S window, south concrete column, N side, 5' from ground 209 Int 4/9/207 < rd block up Middle Center of block 209 Ext 4/9/207 <0.2 S window, N concrete column, S face, 3' from ground 2 Int 4/9/207 < th block up Middle Center of block 00 Int 4/9/207 <0.2 6th block up from sill, S of window 0002 Ext 4/9/ Between windows on concrete column, 5' from ground 02 Int 4/9/207 <0.2 3rd block up from sill, S of window 04 Int 4/9/207 <0.2 4th block up from sill, N of window 04 Ext 4/9/207 <0.2 S concrete column, N side, 5' from ground 06 Int 4/9/207 <0.2 7th block up from sill, N of window 08 Int 4/9/207 <0.2 4th block up from sill, N of window 0 Int 4/9/207 <0.2 2nd block up from sill, S of window 0 Ext 4/9/207 <0.2 N concrete column, N side, 5' from ground Notes: All samples collected as hexane wipes over a 00 square centimeter (cm 2 ) area. All 00 Wing Room Int samples collected from parrallel and perpendicular face of block. All 200 Wing Room Int samples collected from face of block parrallel to interior of room. Regulatory exposure limit for unrestricted use in school is ug/00 cm 2 <0. = Not Detected at the Practical Quantitation Limit (PQL). Bold indicates value greater than ug/00 cm 2 ). Epoxy coating covered by veneer of latex paint. 2). Epoxy coating not covered by veneer of latex paint. 7/9/207 Page of

11 Table 3 AIR SAMPLING LOG CLIENT: Town of Princeton ECS Project: LOCATION: THOMAS PRINCE SCHOOL, 70 STERLING ROAD, PRINCETON, MA DATE: 4/9/7 WEATHER: Cool, Sunny PERSONNEL: CEK, AC PURPOSE: IAS for PCB Lab METHOD: TO0A Method 680 Homologs SMPL MEDIA: PUF PUMP TYPE: SKC CAL EQUIP: DryCal DC Lite M ( 5 ml/min 5 L/min) CONTRACT LAB Alpha Analytical Barometric Ps..9 "Hg start.69 "Hg end.795 Ave. Pressure "Hg Altitude: 625' SAMPLE Target Duration: 400 minutes (6 hr 40 5L/min = 2 m 3 Target flow rate to obtain target volume SAMPLE ID PUMP ID On Loc Temp F Off Loc Temp F TIME Start (h/m/s) TIME End (h/m/s) Total Time (h/m/s) Total Time (Mins) Flow start (L/min) Flow Mid (L/min) Flow chng mid Flow End (L/min) AVE FLOW (L/min) Vol of Air thru PUF (L) Vol of Air Thru PUF (m 3 ) ALPHA PUF ID COMMENTS RM :26:05 7:43:00 7:6: , F RM :3:26 7:47:26 7:6: , K RM :35:9 7:52: 7:7: , C Sweeping outside driveway, much dust generated outside for brief time in AM. No dust in room. Drew could smell odor of "outside cut grass and dust". RM :3:27 7:3:20 7:8: , L RM :08:00 7:26: 7:8: , Q pump found down for 5 mins so subtracted mins from total time in h/m/s to get total time minutes. This was deemed a conservative measure due to more volume of air over less time RM 205 DUP :08:03 7:23:36 7:5: , E RM :00:00 7:3:55 7:3: , LP680 sampling ended around 3: pm for this sample Cafeteria :7:26 7:37:20 7:20: , H Samples collected with lights on and doors closed. Flow Calibration Device 2439 DryCal DCLite calibrator, DCLM, Factory Cal 7/8/6, Tested 4/3/7. Rental from Pine. of 7/9/207

12 Table 4 Laboratory Data Conversion CLIENT: Town of Princeton ECS Project: LOCATION: THOMAS PRINCE SCHOOL, 70 STERLING ROAD, PRINCETON, MA DATE: 4/9/7 WEATHER: Cool, Sunny PERSONNEL: CEK, AC PURPOSE: IAS for PCB Lab METHOD: TO0A Method 680 Homologs SMPL MEDIA: PUF PUMP TYPE: SKC CAL EQUIP: DryCal DC Lite M ( 5 ml/min 5 L/min) CONTRACT LAB Alpha Analytical Barometric Ps..8 Altitude: 625' SAMPLE Target Duration: 400 minutes (6 hr 40 5L/min = 2 m 3 Target flow rate to obtain target volume SAMPLE ID Analytical Result () Vol of Air Thru PUF (m 3 ) Analytical Result (ng/m 3 ) Laboratory Reporting Limit () Laboratory Reporting Limit (ng/m 3 ) COMMENTS RM RM 04 < < RM 0 < < RM 20 < < RM 205 <0 2.7 < Air pump was observed to have malfunctioned RM 205 DUP RM Cafeteria < < The laboratory analytical result in ng/m 3 is calculated from the laboratory result of the ng present in the PUF cartidge divided by the total volume of air that flowed through the cartridge for the duration of the sampling event. of 7/9/207

13 ATTACHMENT I

14 Serial_No:050870:32 ANALYTICAL REPORT Lab Number: Client: L72538 ECS 997 Millbury Street Worcester, MA 0607 ATTN: Phone: Project Name: Project Number: Report Date: Charles Klingler (508) THOMAS PRINCE SCHOOL /08/7 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 (MMA0), NH NELAP (2062), NJ NELAP (MA05), CT (PH04), FL (E8784), IL (20008), LA (85084), ME (MA000), MD (350), NY (627), NC (685), OH (CL06), PA ( ), RI (LAO00299), TX (T ), VT (VT005), VA (46094), WA (C954), US Army Corps of Engineers, USDA (Permit #P30067), USFWS (Permit #LE206964). 320 Forbes Boulevard, Mansfield, MA (Fax) Page of 27

15 Serial_No:050870:32 Project Name: Project Number: THOMAS PRINCE SCHOOL Lab Number: Report Date: L /08/7 Alpha Sample ID Client ID Matrix Sample Location Collection Date/Time Receive Date L RM 00 AIR MEDIA PRINCETON, MA 04/9/7 07:43 04/20/7 L RM 04 AIR MEDIA PRINCETON, MA 04/9/7 07:47 04/20/7 L RM 0 AIR MEDIA PRINCETON, MA 04/9/7 07:52 04/20/7 L RM 20 AIR MEDIA PRINCETON, MA 04/9/7 07:3 04/20/7 L RM 205 AIR MEDIA PRINCETON, MA 04/9/7 07:56 04/20/7 L RM 2 AIR MEDIA PRINCETON, MA 04/9/7 07:3 04/20/7 L CAFETERIA AIR MEDIA PRINCETON, MA 04/9/7 07:37 04/20/7 L RM 205 DUP AIR MEDIA PRINCETON, MA 04/9/7 07:23 04/20/7 L BLANK AIR MEDIA PRINCETON, MA 04/9/7 00:00 04/20/7 Page 2 of 27

16 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Number: L72538 Project Number: Report Date: 05/08/7 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. Results 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 with any questions. Page 3 of 27

17 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Number: L72538 Project Number: Report Date: 05/08/7 Case Narrative (continued) PCB Homologs in Air 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: 05/08/7 Page 4 of 27

18 Serial_No:050870:32 ORGANICS Page 5 of 27

19 Serial_No:050870:32 PCBS Page 6 of 27

20 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:43 Client ID: RM 00 Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/04/7 6:5 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls 0.8 Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs 0.8 Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 7 of 27

21 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:47 Client ID: RM 04 Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/04/7 8:05 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 8 of 27

22 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:52 Client ID: RM 0 Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/04/7 9:9 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 9 of 27

23 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:3 Client ID: RM 20 Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/04/7 20:33 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 0 of 27

24 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:56 Client ID: RM 205 Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/04/7 2:47 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page of 27

25 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:3 Client ID: RM 2 Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/04/7 23:0 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls 26.6 Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs 26.6 Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 2 of 27

26 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:37 Client ID: CAFETERIA Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/05/7 00:5 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 3 of 27

27 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 07:23 Client ID: RM 205 DUP Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/05/7 0: MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls 7.8 Pentachlorobiphenyls 23.7 Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs 4.5 Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 4 of 27

28 Project Name: Project Number: THOMAS PRINCE SCHOOL SAMPLE RESULTS Serial_No:050870:32 Lab Number: L72538 Report Date: 05/08/7 Lab ID: L Date Collected: 04/9/7 00:00 Client ID: BLANK Date Received: 04/20/7 Sample Location: PRINCETON, MA Field Prep: Not Specified Matrix: Air Media Extraction Method: EPA 3540C Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/05/7 02:44 MJS Extraction Date: 04/25/7 :20 Volume of Air: Parameter Result Qualifier Units RL MDL Dilution Factor PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs Surrogate % Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 5 of 27

29 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Number: L72538 Project Number: Report Date: 05/08/7 Method Blank Analysis Batch Quality Control Analytical Method: Analytical Date: Analyst: 05,8270DSIM/680(M) 05/04/7 4:23 MJS Extraction Method: EPA 3540C Extraction Date: 04/25/7 :20 Parameter Result Qualifier Units RL PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab for sample(s): 009 MDL Batch: WG99726 Monochlorobiphenyls Dichlorobiphenyls Trichlorobiphenyls Tetrachlorobiphenyls Pentachlorobiphenyls Hexachlorobiphenyls Heptachlorobiphenyls Octachlorobiphenyls Nonachlorobiphenyls Decachlorobiphenyl Total Homologs Surrogate %Recovery Qualifier Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 6 of 27

30 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Control Sample Analysis Batch Quality Control Lab Number: L72538 Project Number: Report Date: 05/08/7 Parameter LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Associated sample(s): 009 Batch: WG ClBZ# CLBZ# Cl2BZ#4/# Cl2BZ# Cl3BZ# Cl3BZ# Cl2BZ# Cl4BZ# Cl3BZ# Cl4BZ# Cl3BZ# Cl3BZ# Cl4BZ# Cl4BZ# Cl4BZ# Cl5BZ# Cl4BZ# Cl4BZ# Cl3BZ# Cl5BZ#2/#95/# Cl4BZ# Page 7 of 27

31 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Control Sample Analysis Batch Quality Control Lab Number: L72538 Project Number: Report Date: 05/08/7 Parameter LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Associated sample(s): 009 Batch: WG Cl6BZ# Cl4BZ# Cl4BZ# Cl5BZ#0/# Cl4BZ# Cl5BZ# Cl5BZ#87/# Cl6BZ# Cl5BZ# Cl4BZ# Cl6BZ# Cl6BZ#47/# Cl4BZ# Cl5BZ#07/# Cl7BZ# Cl5BZ# Cl6BZ# Cl5BZ# Cl6BZ# Cl5BZ# Cl6BZ# Page 8 of 27

32 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Control Sample Analysis Batch Quality Control Lab Number: L72538 Project Number: Report Date: 05/08/7 Parameter LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Associated sample(s): 009 Batch: WG Cl6BZ#29/# Cl7BZ# Cl7BZ# Cl5BZ# Cl7BZ# Cl6BZ# Cl6BZ# Cl8BZ# Cl7BZ# Cl8BZ#204/#200CAL Cl6BZ# Cl6BZ# Cl7BZ# Cl8BZ# Cl7BZ# Cl6BZ# Cl9BZ# Cl7BZ# Cl8BZ# Cl8BZ# Cl8BZ# Page 9 of 27

33 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Control Sample Analysis Batch Quality Control Lab Number: L72538 Project Number: Report Date: 05/08/7 Parameter LCS %Recovery LCSD %Recovery Qual %Recovery Qual Limits RPD Qual RPD Limits PCB Homologs by GC/MSSIM (LowVol) Mansfield Lab Associated sample(s): 009 Batch: WG Cl9BZ# Cl0BZ# Surrogate LCS %Recovery Qual LCSD %Recovery Qual Acceptance Criteria Cl3BZ#9C3 Cl8BZ#202C Page 20 of 27

34 Serial_No:050870:32 Project Name: Project Number: THOMAS PRINCE SCHOOL Lab Number: Report Date: L /08/7 Sample Receipt and Container Information Were project specific reporting limits specified? YES Cooler Information Cooler A Custody Seal Absent Container Information Container ID Container Type Cooler ph Temp deg C Pres Seal Analysis(*) L725380A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) L A PUF Air Cartridge High or Low A N/A 6.0 Y Absent A2PCBHOMS8270SIML(7) Page 2 of 27 *Values in parentheses indicate holding time in days

35 Serial_No:050870:32 Project Name: Project Number: Acronyms THOMAS PRINCE SCHOOL Lab Number: L Report Date: 05/08/7 GLOSSARY EDL EPA LCS LCSD LFB MDL MS MSD NA NC PA/DPA NI NP RL 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 (RL). 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 (RL). The MDL 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 RL 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 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 Qualifiers 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 NJ Airrelated projects, flag only applies to associated field samples that have detectable concentrations of the analyte above the reporting limit. For NJrelated 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 22 of 27

36 Serial_No:050870:32 Project Name: Project Number: THOMAS PRINCE SCHOOL Lab Number: L Report Date: 05/08/7 Data Qualifiers C D E G H I M NJ 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 (RL) 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 RL. (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 (RL) for the sample. Report Format: Data Usability Report Page 23 of 27

37 Serial_No:050870:32 Project Name: THOMAS PRINCE SCHOOL Lab Number: L72538 Project Number: Report Date: 05/08/7 REFERENCES 05 Test Methods for Evaluating Solid Waste: Physical/Chemical Methods. EPA SW846. Third Edition. Updates I IIIA, 997 in conjunction with NOAA Technical Memorandum NMFSNWFSC59: Extraction, Cleanup and GC/MS Analysis of Sediments and Tissues for Organic Contaminants, March 2004 and the Determination of Pesticides and PCBs in Water and Oil/Sediment by GC/MS: Method 680, EPA 0A , November 985. 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 24 of 27

38 Serial_No:050870:32 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 0: 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. SM5C: DW: Dissolved Organic Carbon Mansfield Facility SM 2540D: TSS EPA 05A 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 50B The following analytes are included in our Massachusetts DEP Scope of Accreditation Westborough Facility: Drinking Water EPA 0.0: NitrateN, Fluoride, Sulfate; EPA 353.2: NitrateN, NitriteN; SM4500NO3F: NitrateN, NitriteN; SM4500FC, SM4500CNCE, EPA 80., SM2B, SM4500ClD, SM2320B, SM2540C, SM4500HB EPA 332: Perchlorate; EPA 524.2: THMs and VOCs; EPA 504.: EDB, DBCP. Microbiology: SM925B; SM9223P/A, SM9223BColilertQT,SM9222D. NonPotable Water SM4500H,B, EPA 20., SM250B, SM2540C, SM2320B, SM4500CLE, SM4500FBC, SM4500NH3BH, EPA 350.: AmmoniaN, LACHAT B: AmmoniaN, SM4500NO3F, EPA 353.2: NitrateN, EPA 35., SM4500PE, SM4500PB, E, SM4500SO4E, SM5220D, EPA 40.4, SM520B, SM5C, SM4500CLD, EPA 664, EPA 420., SM4500CNCE, SM2540D. 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 625: 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 25 of 27

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