44-25 Exhibit B-Complete - VI Letter Report - DPW West Orange - April 2023.pdf

TABLE 2 SUB-SLAB SOIL GAS SAMPLE ANALYTICAL RESULTS (APRIL 2023) West Orange DPW - 25 LAKESIDE AVENUE WEST ORANGE, ESSEX COUNTY, NEW JERSEY NJDEP SRP PI# 014423 SAMPLE ID: LAB ID: COLLECTION DATE: SAMPLE MATRIX: SSSG-1 L2317290-06 4/1/2023 Soil-Gas Screening Levels SSSG-2 L2317290-07 4/1/2023 SOIL_VAPOR NJ-RSGS NJ-NRSGS CAS (ug/m3) (ug/m3) Conc 71-55-6 79-34-5 79-00-5 75-34-3 75-35-4 120-82-1 95-63-6 106-93-4 95-50-1 107-06-2 78-87-5 108-67-8 106-99-0 541-73-1 106-46-7 123-91-1 540-84-1 78-93-3 95-49-8 107-05-1 622-96-8 108-10-1 67-64-1 71-43-2 75-27-4 75-25-2 74-83-9 75-15-0 56-23-5 108-90-7 75-00-3 67-66-3 74-87-3 156-59-2 10061-01-5 110-82-7 124-48-1 75-71-8 64-17-5 100-41-4 76-13-1 76-14-2 142-82-5 87-68-3 67-63-0 80-62-6 1634-04-4 75-09-2 110-54-3 95-47-6 179601-23-1 100-42-5 75-65-0 127-18-4 109-99-9 108-88-3 156-60-5 10061-02-6 79-01-6 75-69-4 593-60-2 75-01-4 260000 1000 100 3100 15 10000 360 38 42000 28 260000 160000 18 260 36000 23 2600 520000 5100 4700 310000 56 260000 540 14000 36000 5200 5200 52000 540 260000 34 32 1100000 4400 440 13000 15 44000 1500 170 180000 120 1100000 660000 79 1100 150000 100 11000 2200000 21000 20000 1300000 250 1100000 2400 61000 150000 22000 22000 220000 2400 1100000 150 140 2.8 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1.9 ND ND ND ND 4 ND ND ND ND ND ND ND ND 2.1 ND ND ND 0.69 ND 15 ND ND ND ND ND ND ND ND ND 4.9 ND ND ND ND ND 67 ND ND ND ND 97 26 ND ND ANALYTE Q SSSG-3 L2317290-08 4/1/2023 SOIL_VAPOR RL MDL Conc 1.1 1.4 1.1 0.81 0.79 1.5 0.98 1.5 1.2 0.81 0.92 0.98 0.44 1.2 1.2 0.72 0.93 1.5 1 0.63 0.98 2 2.4 0.64 1.3 2.1 0.78 0.62 1.3 0.92 0.53 0.98 0.41 0.79 0.91 0.69 1.7 0.99 9.4 0.87 1.5 1.4 0.82 2.1 1.2 2 0.72 1.7 0.7 0.87 1.7 0.85 1.5 1.4 1.5 0.75 0.79 0.91 1.1 1.1 0.87 0.51 - 4.3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5.2 ND 2.3 ND ND ND 1.3 ND ND 1.8 ND ND ND ND ND 2.7 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 75 ND ND ND ND 230 5.1 ND ND 0 - - 1.55 - Q SSSG-4 L2317290-05 4/1/2023 SOIL_VAPOR RL MDL Conc 1.1 1.4 1.1 0.81 0.79 1.5 0.98 1.5 1.2 0.81 0.92 0.98 0.44 1.2 1.2 0.72 0.93 1.5 1 0.63 0.98 2 2.4 0.64 1.3 2.1 0.78 0.62 1.3 0.92 0.53 0.98 0.41 0.79 0.91 0.69 1.7 0.99 9.4 0.87 1.5 1.4 0.82 2.1 1.2 2 0.72 1.7 0.7 0.87 1.7 0.85 1.5 1.4 1.5 0.75 0.79 0.91 1.1 1.1 0.87 0.51 - 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5.

0.79 0.91 0.69 1.7 0.99 9.4 0.87 1.5 1.4 0.82 2.1 1.2 2 0.72 1.7 0.7 0.87 1.7 0.85 1.5 1.4 1.5 0.75 0.79 0.91 1.1 1.1 0.87 0.51 - 5 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5.5 ND ND ND ND ND 1.4 ND ND 9.3 ND 1.6 ND ND ND 2.9 23 ND ND ND ND ND 1.6 ND ND ND ND ND ND ND ND 270 ND ND ND ND 280 62 ND ND 0 - - ND - Q SSSG-5 L2317290-09 4/1/2023 SOIL_VAPOR RL MDL Conc 1.1 1.4 1.1 0.81 0.79 1.5 0.98 1.5 1.2 0.81 0.92 0.98 0.44 1.2 1.2 0.72 0.93 1.5 1 0.63 0.98 2 2.4 0.64 1.3 2.1 0.78 0.62 1.3 0.92 0.53 0.98 0.41 0.79 0.91 0.69 1.7 0.99 9.4 0.87 1.5 1.4 0.82 2.1 1.2 2 0.72 1.7 0.7 0.87 1.7 0.85 1.5 1.4 1.5 0.75 0.79 0.91 1.1 1.1 0.87 0.51 - 1.6 ND ND ND ND ND 4.9 ND ND ND ND 1.8 ND ND ND ND 6.5 4.1 ND ND 1 7.4 40 2.5 ND ND ND 4.4 ND ND ND 5.9 0.52 4 ND 2.1 ND 2.6 28 2.4 ND ND 3.3 ND 2.7 ND ND ND 5.6 4.3 9.6 ND ND 95 ND 11 ND ND 120 33 ND ND 0 - - 10.4 2.34 3.66 1.56 1.98 4.52 4.82 2.38 1.55 1.29 1.83 1.35 3.87 Q SSSG-6 L2317290-10 4/1/2023 SOIL_VAPOR RL MDL Conc 1.1 1.4 1.1 0.81 0.79 1.5 0.98 1.5 1.2 0.81 0.92 0.98 0.44 1.2 1.2 0.72 0.93 1.5 1 0.63 0.98 2 2.4 0.64 1.3 2.1 0.78 0.62 1.3 0.92 0.53 0.98 0.41 0.79 0.91 0.69 1.7 0.99 9.4 0.87 1.5 1.4 0.82 2.1 1.2 2 0.72 1.7 0.7 0.87 1.7 0.85 1.5 1.4 1.5 0.75 0.79 0.91 1.1 1.1 0.87 0.51 - 5.1 ND ND ND ND ND 2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.1 8.8 ND ND ND ND ND 2.2 ND ND 6.3 ND 10 ND ND ND 2.4 28 ND ND ND ND ND ND ND ND 2.7 ND ND ND ND ND 120 ND 1.5 ND ND 340 5.6 ND ND 0 0 0 0 0 0 0 0 0 0 0 0 0 - 4.48 1.96 1.33 - Q SOIL_VAPOR RL MDL Conc 1.1 1.4 1.1 0.81 0.79 1.5 0.98 1.5 1.2 0.81 0.92 0.98 0.44 1.2 1.2 0.72 0.93 1.5 1 0.63 0.98 2 2.4 0.64 1.3 2.1 0.78 0.62 1.3 0.92 0.53 0.98 0.41 0.79 0.91 0.69 1.7 0.99 9.4 0.87 1.5 1.4 0.82 2.1 1.2 2 0.72 1.7 0.7 0.87 1.7 0.85 1.5 1.4 1.5 0.75 0.79 0.91 1.1 1.1 0.87 0.51 - 13 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 13 ND ND ND ND ND ND ND ND 7.3 ND 3.5 ND ND ND 2.5 19 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 180 ND ND ND ND 510 10 ND ND 0 0 0 - - ND - Q RL MDL 1.8 2.3 1.8 1.3 1.3 2.4 1.6 2.5 2 1.3 1.5 1.6 0.73 2 2 1.2 1.5 2.4 1.7 1 1.6 3.4 4 1.1 2.2 3.4 1.3 1 2.1 1.5 0.87 1.6 0.68 1.3 1.5 1.1 2.8 1.6 16 1.4 2.5 2.3 1.4 3.5 2 3.4 1.2 2.9 1.2 1.4 2.9 1.4 2.5 2.2 2.4 1.2 1.3 1.5 1.8 1.9 1.4 0.84 - 0 - - NJ VOLATILE ORGANICS IN

1.6 3.4 4 1.1 2.2 3.4 1.3 1 2.1 1.5 0.87 1.6 0.68 1.3 1.5 1.1 2.8 1.6 16 1.4 2.5 2.3 1.4 3.5 2 3.4 1.2 2.9 1.2 1.4 2.9 1.4 2.5 2.2 2.4 1.2 1.3 1.5 1.8 1.9 1.4 0.84 - 0 - - NJ VOLATILE ORGANICS IN AIR 1,1,1-Trichloroethane 1,1,2,2-Tetrachloroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,2,4-Trichlorobenzene 1,2,4-Trimethylbenzene 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloropropane 1,3,5-Trimethybenzene 1,3-Butadiene 1,3-Dichlorobenzene 1,4-Dichlorobenzene 1,4-Dioxane 2,2,4-Trimethylpentane 2-Butanone 2-Chlorotoluene 3-Chloropropene 4-Ethyltoluene 4-Methyl-2-pentanone Acetone Benzene Bromodichloromethane Bromoform Bromomethane Carbon disulfide Carbon tetrachloride Chlorobenzene Chloroethane Chloroform Chloromethane cis-1,2-Dichloroethene cis-1,3-Dichloropropene Cyclohexane Dibromochloromethane Dichlorodifluoromethane Ethanol Ethylbenzene Freon-113 Freon-114 Heptane Hexachlorobutadiene Isopropanol Methyl Methacrylate Methyl tert butyl ether Methylene chloride n-Hexane o-Xylene p/m-Xylene Styrene Tertiary butyl Alcohol Tetrachloroethene Tetrahydrofuran Toluene trans-1,2-Dichloroethene trans-1,3-Dichloropropene Trichloroethene Trichlorofluoromethane Vinyl bromide Vinyl chloride NJ VOLATILE ORGANICS IN AIR-TIC No Tentatively Identified Compounds Butane 000106-97-8 Unknown Isobutane 000075-28-5 Nonane (C9) 000111-84-2 Acetaldehyde 000075-07-0 Decane (C10) 000124-18-5 Methyl Alcohol 000067-56-1 unknown alkane unknown alkane unknown alkane unknown alkane unknown benzene Pentane, 2-methyl000107-83-5 Pentane, 3-methyl000096-14-0 Butane, 2,3-Dimethyl000079-29-8 Cyclopentane, Methyl000096-37-7 Pentane 000109-66-0 * Comparison is not performed on parameters with non-numeric criteria. 1.9 - 2.51 - NJ - - NJ - - - - NJ-INRAL: New Jersey 2021 Indoor Air Non-Residential Rapid Action Levels - ug/m3 Criteria per May 2021 Version 5.0 Guidance Document. NJ-IRRAL: New Jersey 2021 Indoor Air Residential Rapid Action Levels - ug/m3 Criteria per May 2021 Version 5.0 Guidance Document. NJ-NRIARS: New Jersey 2021 Non-Residential Indoor Air Vapor Intrusion Exposure Pathway Remediation Standards Criteria per Remediation Standards, last amended May 17, 2021. NJ-NRIAS: New Jersey 2021 Non-Residential Indoor Air Remediation Standards - ug/m3 Criteria per May 2021 Version 5.0 Guidance Document. NJ-NRSGS: New Jersey 2021

Standards, last amended May 17, 2021. NJ-NRIAS: New Jersey 2021 Non-Residential Indoor Air Remediation Standards - ug/m3 Criteria per May 2021 Version 5.0 Guidance Document. NJ-NRSGS: New Jersey 2021 Non-Residential Soil Gas Screening Levels - ug/m3 Criteria per May 2021 Version 5.0 Guidance Document. NJ-RIARS: New Jersey 2021 Residential Indoor Air Vapor Intrusion Exposure Pathway Remediation Standards Criteria per Remediation Standards, last amended May 17, 2021. NJ-RIAS: New Jersey 2021 Residential Indoor Air Remediation Standards - ug/m3 Criteria per May 2021 Version 5.0 Guidance Document. NJ-RSGS: New Jersey 2021 Residential Soil Gas Screening Levels - ug/m3 Criteria per May 2021 Version 5.0 Guidance Document. NJ J NJ NJ NJ NJ J J J J NJ NJ NJ NJ J J - -