IH2954_20240308_Comments to DRAFT Phase II ESA

From:Engard, Brett
To:Day, Collin; Stephanie Clorety
Subject:NCD981472624 - US 70 Drum Dump, 2353 US Highway 70 West, Morganton, North Carolina
Date:Friday, March 8, 2024 11:37:00 AM
Attachments:image001.png
image003.png
image004.png
Pages from 001533-PR Morganton NC Phase 2-2.pdf
Stephanie,
I have performed a review of the Phae I and II ESAs completed by EBI. The Drum Disposal Site is
understandably difficult to access and perform assessment. The following are comments:
Section 3.2.2 states that all soil borings were advanced using DPT, but section 5 Findings
states three borings were advanced with a hand auger, presumably B-1, B-2, and B-3, because
“Three borings were advanced with a geoprobe direct push drill rig around the perimeter of
the former drum dumping area.” – Is that correct?
It appears that an amount of an unknown concentration of 1,1-Difluoroethane (1,1-DFA) was
applied to a rag, in the field, as a tracer. 1,1-DFA (cas: 75-37-6) was presented as being
detected in soil gas samples, but there are not laboratory analytical results.
What is the basis for the following statement, “It should be noted that leaks of up to 10,000
ug/m3 are generally considered acceptable and a value of 1,000 ug/m3 is considered a one
percent leak.” If the concentration of 1,1-DFA applied is unknown, how is “a one percent
leak” determined?
Numerous compounds were detected in soil gas sample B5SG which were not presented on
Table 4.2, and many of those compounds were detected at concentrations greater than the
non-residential, and residential, vapor intrusion screening level. Please note, the data should
be entered into the DEQ Risk Calculator and the Hazard Index determined.
Many of the compounds were “E” flagged; the analyte concentration exceeds the upper limit
of the calibration range of the instrument established by the initial calibration (ICAL). Are the
reported concentrations for “E” flagged compounds therefore biased low?
The depth of the culvert where the drums were deposited is approximately 30-feet in depth,
however the borings B-4, and B-5 (refusal) were advanced to 15 and 16 feet below ground
surface. The locations of soil borings B-4 and B-6 appear to be upgradient of the drum dump
Site.
Based on historical information presented in the Phase I ESA Report PCB Aroclor 1254 was
detected at a concentration of 298 ppb in a sample (4/6/1987) of the solid waste. SVOCs butyl
phthalate (cas: 84-74-2), Bis(2-ethylhexyl)phthalate (cas: 117-81-7) were also detect in soil
(sample 3365 or #3) collected 5 feet south of the drums in 1986. Why were PCBs and SVOCs
exclused from the suite of analysis.
The Allison Residential Well was/is located 400-feet west of the Drum Dump Site, which is
approximately located at 2395 Highway 70 East. A receptor survey should be completed and
water supply wells should be sampled, provided access.
Were the soil samples sent to the laboratory for analysis, split samples collected separately
than the samples used got PID headspace readings?
The perched groundwater sample does not represent groundwater conditions which would
be utilized by residents/businesses which may have a water supply well(s).

Please let us know if you want to make any revisions. Are there any time constraints (due diligence)?
Would your client be willing to enter the REC Program, which has a Risk-Based closure route?

Regards,

Brett Engard, P.G.
Hydrogeologist, Inactive Hazardous Sites BranchDivision of Waste ManagementNC Department of Environmental Quality

828-767-2424 cell
[e-mail]2090 US-70
SwannanoaNC 28778

From: Day, Collin <[e-mail]>
Sent: Wednesday, February 28, 2024 10:10 AM
To: Stephanie Clorety <[e-mail]>
Cc: Engard, Brett <[e-mail]>
Subject: RE: [External] RE: 2353 US Highway 70 West, Morganton, North Carolina

Thanks very much Stephanie. I am copying Brett Engard on my response back to you. I did
receive the Phase I report even though the file size is 60 Megs. I reduced the file size down to
36 Megs which is still too large for me to send successively to Brett. Consequently, I am
loading a copy of the report onto our cloud where he Brett can retrieve as part of his review.

Collin Day
Environmental Supervisor
NC Department of Environmental Quality, Winston-Salem Regional Office
Division of Waste Management, Superfund Section-IHSB Western Region

Voice: [phone]
Mobile: [phone]
Fax: [phone]
Email: [e-mail]

450 West Hanes Mill Road, Suite 300
Winston-Salem, NC 27105-7407

INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
http://portal.ncdenr.org/web/wm/gis/maps

ONLINE ACCESS TO SUPERFUND SECTION DOCUMENTS:
http://portal.ncdenr.org/web/wm/sf-file-records

Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

From: Stephanie Clorety <[e-mail]>
Sent: Wednesday, February 28, 2024 9:47 AM
To: Day, Collin <[e-mail]>
Subject: [External] RE: 2353 US Highway 70 West, Morganton, North Carolina

CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the
Report Message button located on your Outlook menu bar on the Home tab.

I sent over the Phase I report in a separate email. But to follow up your questions, there is no
planned redevelopment for the site.

There is no onsite surface water.

There is one listed private well on the EDR database. No listing for wells were identified on the NC
Division of water resources.

Stephanie Clorety
Senior Project Manager
Office: 443-695-6135
[e-mail]
21 B Street | Burlington, MA | 01803
www.ebiconsulting.com | Blog
EBI’s Notice of Collection and Privacy Policy

From: Stephanie Clorety
Sent: Wednesday, February 28, 2024 9:16 AM
To: [e-mail]
Subject: RE: 2353 US Highway 70 West, Morganton, North Carolina

Collin- Attached is the requested Phase I report.

Stephanie Clorety
Senior Project Manager
Office: 443-695-6135
[e-mail]
21 B Street | Burlington, MA | 01803
www.ebiconsulting.com | Blog
EBI’s Notice of Collection and Privacy Policy

From: Stephanie Clorety
Sent: Tuesday, February 27, 2024 5:01 PM
To: [e-mail]
Subject: 2353 US Highway 70 West, Morganton, North Carolina

Collin – Based on our previous discussions attached is the Phase 2 report for the above referenced
property for your review.

Thank you,

Stephanie Clorety
Senior Project Manager
Office: 443-695-6135
[e-mail]
21 B Street | Burlington, MA | 01803
www.ebiconsulting.com | Blog
EBI’s Notice of Collection and Privacy Policy

Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to thirdparties by an authorized state official.
Phase II Environmental Site Assessment 2353 US Highway 70 West
EBI Project #001533-PR Morganton, North Carolina

13

4.2 SOIL VAPOR ANALYSIS RESULTS
The soil vapor samples were analyzed for VOCs via EPA Method TO-15. The following table presents only
the contaminants identified above the laboratory method detection limits:

Table 4.2 Soil Vapor Results
Results flagged as "Exceed" if any of the selected criteria exceeded (most
stringent). Legend: Hit Exceed
Client Sample ID:

NCDEQ Residential Vapor
Intrusion Screening Levels -
Sub-Slab and Exterior Soil Gas
B4SG B5SG B6SG
Date Sampled: 2/1/2024 2/1/2024 2/1/2024
Matrix: Soil Vapor Soil Vapor Soil Vapor
VOCs
1,1-Difluoroethane ug/m3 Tracer ND 1450 94.6
Acetone ug/m3 216000 190 ND 86.7
Benzene ug/m3 120 26.8 ND 8.62
Carbon Disulfide ug/m3 4870 18.8 ND 9.8
Chloromethane ug/m3 626 ND ND 0.44
Ethanol ug/m3 NS 39.2 1710 73
Ethylbenzene ug/m3 374 13.6 ND 11.9
Isopropylbenzene ug/m3 2780 1.2 ND 1.22
Methylene Chloride ug/m3 4170 2.16 94.1 1.71
2-Butanone (Mek) ug/m3 34800 14.5 ND 14.5
Toluene ug/m3 34800 31.9 ND 21
Trichloroethene ug/m3 13.9 6.16 ND 4.61
1,2,4-Trimethylbenzene ug/m3 48.7 9.91 ND 8.64
1,3,5-Trimethylbenzene ug/m3 NS 4.25 ND 3.75
M&P-Xylene ug/m3 695 38.2 ND 37.7
O-Xylene ug/m3 695 15.2 ND 14.6
Notes: All results are shown in micrograms per cubic meter (ug/m3)
ND = Non-detected above laboratory detection limits

The analytical results revealed that concentrations of several VOCs were detected above the laboratory
method detection limits in the soil vapor samples analyzed. All of the detected concentrations were below
the NCDEQ Residential Vapor Intrusion Screening Levels.

The soil vapor analytical results indicated that 1,1-DFA was detected at concentrations ranging from 0.0
µg/m3 to 1,450 µg/m3. It should be noted that leaks of up to 10,000 µg/m3 are generally considered
acceptable and a value of 1,000 µg/m3 is considered a one percent leak. Therefore, based on this
information, the integrity of these samples does not appear to have been compromised during sampling.

Laboratory soil vapor analytical results and complete laboratory data sheets and chain-of-custody
documentation are presented in Appendix C.

SAMPLE RESULTS - 01
L1701719
B5SG
Collected date/time: 02/01/24 14:21
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 32.9 78.2 1 WG2219774
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2219774
Benzene 71-43-2 78.10 0.200 0.639 517 1650 E 1 WG2219774
Bromodichloromethane 75-27-4 164 0.200 1.34 16.4 110 1 WG2219774
Bromoform 75-25-2 253 0.600 6.21 2.00 20.7 1 WG2219774
Bromomethane 74-83-9 94.90 0.200 0.776 1.08 4.19 1 WG2219774
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG2219774
Carbon disulfide 75-15-0 76.10 0.200 0.622 8.16 25.4 1 WG2219774
Carbon tetrachloride 56-23-5 154 0.200 1.26 343 2160 E 1 WG2219774
Chlorobenzene 108-90-7 113 0.200 0.924 291 1340 E 1 WG2219774
Chloroethane 75-00-3 64.50 0.200 0.528 1.38 3.64 1 WG2219774
Chloroform 67-66-3 119 0.200 0.973 1450 7060 E 1 WG2219774
Chloromethane 74-87-3 50.50 0.200 0.413 1.44 2.97 1 WG2219774
2-Chlorotoluene 95-49-8 126 0.200 1.03 57.3 295 1 WG2219774
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2219774
1,2-Dibromoethane 106-93-4 188 0.200 1.54 2220 17100 E 1 WG2219774
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2219774
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2219774
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2219774
1,2-Dichloroethane 107-06-2 99 0.200 0.810 238 964 E 1 WG2219774
1,1-Dichloroethane 75-34-3 98 0.200 0.802 22.3 89.4 1 WG2219774
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 16.7 66.2 1 WG2219774
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 13.1 51.9 1 WG2219774
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 3.97 15.7 1 WG2219774
1,2-Dichloropropane 78-87-5 113 0.200 0.924 1490 6890 E 1 WG2219774
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2219774
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2219774
1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2219774
Ethanol 64-17-5 46.10 2.50 4.71 25.0 47.1 1 WG2219774
Ethylbenzene 100-41-4 106 0.200 0.867 135 585 E 1 WG2219774
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 1.50 8.43 1 WG2219774
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 3.38 16.7 J4 1 WG2219774
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 1.15 8.81 1 WG2219774
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2219774
Isopropylbenzene 98-82-8 120.20 0.200 0.983 ND ND 1 WG2219774
Methylene Chloride 75-09-2 84.90 0.200 0.694 984 3420 E 1 WG2219774
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2219774
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 4.00 11.8 1 WG2219774
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG2219774
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2219774
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2219774
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG2219774
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2219774
Tetrachloroethylene 127-18-4 166 0.200 1.36 790 5360 E 1 WG2219774
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 41.7 123 1 WG2219774
Toluene 108-88-3 92.10 0.500 1.88 320 1210 E 1 WG2219774
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2219774
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 34.9 190 1 WG2219774
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 3.64 19.8 1 WG2219774
Trichloroethylene 79-01-6 131 0.200 1.07 1170 6270 E 1 WG2219774
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 30.3 149 1 WG2219774
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 202 991 E 1 WG2219774
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 359 1680 E 1 WG2219774
Vinyl chloride 75-01-4 62.50 0.200 0.511 21.9 56.0 1 WG2219774
Vinyl Bromide 593-60-2 106.95 0.200 0.875 326 1430 E 1 WG2219774
Vinyl acetate 108-05-4 86.10 0.630 2.22 ND ND 1 WG2219774
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:38 5 of 17
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:46 5 of 17
SAMPLE RESULTS - 01
L1701719
B5SG
Collected date/time: 02/01/24 14:21
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Xylenes, Total 1330-20-7 106.16 0.600 2.61 379 1650 1 WG2219774
m&p-Xylene 179601-23-1 106 0.400 1.73 154 668 1 WG2219774
o-Xylene 95-47-6 106 0.200 0.867 225 975 E 1 WG2219774
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 1030 J1 WG2219774
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:38 6 of 17
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:46 6 of 17
SAMPLE RESULTS - 02
L1701719
B4SG
Collected date/time: 02/01/24 14:37
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 80.0 190 1 WG2219774
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2219774
Benzene 71-43-2 78.10 0.200 0.639 8.38 26.8 1 WG2219774
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2219774
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG2219774
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2219774
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG2219774
Carbon disulfide 75-15-0 76.10 0.200 0.622 6.03 18.8 1 WG2219774
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2219774
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2219774
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2219774
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2219774
Chloromethane 74-87-3 50.50 0.200 0.413 ND ND 1 WG2219774
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2219774
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2219774
1,2-Dibromoethane 106-93-4 188 0.200 1.54 5.41 41.6 1 WG2219774
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2219774
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2219774
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2219774
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2219774
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2219774
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2219774
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2219774
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2219774
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2219774
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2219774
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2219774
1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2219774
Ethanol 64-17-5 46.10 2.50 4.71 20.8 39.2 1 WG2219774
Ethylbenzene 100-41-4 106 0.200 0.867 3.13 13.6 1 WG2219774
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 ND ND 1 WG2219774
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND J4 1 WG2219774
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2219774
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2219774
Isopropylbenzene 98-82-8 120.20 0.200 0.983 0.244 1.20 1 WG2219774
Methylene Chloride 75-09-2 84.90 0.200 0.694 ND ND 1 WG2219774
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2219774
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 4.92 14.5 1 WG2219774
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG2219774
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2219774
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2219774
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG2219774
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2219774
Tetrachloroethylene 127-18-4 166 0.200 1.36 0.331 2.25 1 WG2219774
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG2219774
Toluene 108-88-3 92.10 0.500 1.88 8.48 31.9 1 WG2219774
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2219774
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2219774
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2219774
Trichloroethylene 79-01-6 131 0.200 1.07 1.15 6.16 1 WG2219774
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 2.02 9.91 1 WG2219774
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 0.866 4.25 1 WG2219774
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2219774
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2219774
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2219774
Vinyl acetate 108-05-4 86.10 0.630 2.22 ND ND 1 WG2219774
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:38 7 of 17
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:46 7 of 17
SAMPLE RESULTS - 02
L1701719
B4SG
Collected date/time: 02/01/24 14:37
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Xylenes, Total 1330-20-7 106.16 0.600 2.61 12.3 53.4 1 WG2219774
m&p-Xylene 179601-23-1 106 0.400 1.73 8.81 38.2 1 WG2219774
o-Xylene 95-47-6 106 0.200 0.867 3.50 15.2 1 WG2219774
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 126 WG2219774
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 98.2 WG2220837
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:38 8 of 17
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:46 8 of 17
SAMPLE RESULTS - 03
L1701719
B6SG
Collected date/time: 02/01/24 14:56
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Acetone 67-64-1 58.10 1.25 2.97 36.5 86.7 1 WG2219774
Allyl chloride 107-05-1 76.53 0.200 0.626 ND ND 1 WG2219774
Benzene 71-43-2 78.10 0.200 0.639 2.70 8.62 1 WG2219774
Bromodichloromethane 75-27-4 164 0.200 1.34 ND ND 1 WG2219774
Bromoform 75-25-2 253 0.600 6.21 ND ND 1 WG2219774
Bromomethane 74-83-9 94.90 0.200 0.776 ND ND 1 WG2219774
1,3-Butadiene 106-99-0 54.10 2.00 4.43 ND ND 1 WG2219774
Carbon disulfide 75-15-0 76.10 0.200 0.622 3.15 9.80 1 WG2219774
Carbon tetrachloride 56-23-5 154 0.200 1.26 ND ND 1 WG2219774
Chlorobenzene 108-90-7 113 0.200 0.924 ND ND 1 WG2219774
Chloroethane 75-00-3 64.50 0.200 0.528 ND ND 1 WG2219774
Chloroform 67-66-3 119 0.200 0.973 ND ND 1 WG2219774
Chloromethane 74-87-3 50.50 0.200 0.413 0.213 0.440 1 WG2219774
2-Chlorotoluene 95-49-8 126 0.200 1.03 ND ND 1 WG2219774
Dibromochloromethane 124-48-1 208 0.200 1.70 ND ND 1 WG2219774
1,2-Dibromoethane 106-93-4 188 0.200 1.54 0.646 4.97 1 WG2219774
1,2-Dichlorobenzene 95-50-1 147 0.200 1.20 ND ND 1 WG2219774
1,3-Dichlorobenzene 541-73-1 147 0.200 1.20 ND ND 1 WG2219774
1,4-Dichlorobenzene 106-46-7 147 0.200 1.20 ND ND 1 WG2219774
1,2-Dichloroethane 107-06-2 99 0.200 0.810 ND ND 1 WG2219774
1,1-Dichloroethane 75-34-3 98 0.200 0.802 ND ND 1 WG2219774
1,1-Dichloroethene 75-35-4 96.90 0.200 0.793 ND ND 1 WG2219774
cis-1,2-Dichloroethene 156-59-2 96.90 0.200 0.793 ND ND 1 WG2219774
trans-1,2-Dichloroethene 156-60-5 96.90 0.200 0.793 ND ND 1 WG2219774
1,2-Dichloropropane 78-87-5 113 0.200 0.924 ND ND 1 WG2219774
cis-1,3-Dichloropropene 10061-01-5 111 0.200 0.908 ND ND 1 WG2219774
trans-1,3-Dichloropropene 10061-02-6 111 0.200 0.908 ND ND 1 WG2219774
1,4-Dioxane 123-91-1 88.10 0.630 2.27 ND ND 1 WG2219774
Ethanol 64-17-5 46.10 2.50 4.71 38.7 73.0 1 WG2219774
Ethylbenzene 100-41-4 106 0.200 0.867 2.74 11.9 1 WG2219774
Trichlorofluoromethane 75-69-4 137.40 0.200 1.12 ND ND 1 WG2219774
Dichlorodifluoromethane 75-71-8 120.92 0.200 0.989 ND ND J4 1 WG2219774
1,1,2-Trichlorotrifluoroethane 76-13-1 187.40 0.200 1.53 ND ND 1 WG2219774
1,2-Dichlorotetrafluoroethane 76-14-2 171 0.200 1.40 ND ND 1 WG2219774
Isopropylbenzene 98-82-8 120.20 0.200 0.983 0.248 1.22 1 WG2219774
Methylene Chloride 75-09-2 84.90 0.200 0.694 0.492 1.71 1 WG2219774
Methyl Butyl Ketone 591-78-6 100 1.25 5.11 ND ND 1 WG2219774
2-Butanone (MEK)78-93-3 72.10 1.25 3.69 4.93 14.5 1 WG2219774
4-Methyl-2-pentanone (MIBK)108-10-1 100.10 1.25 5.12 ND ND 1 WG2219774
MTBE 1634-04-4 88.10 0.200 0.721 ND ND 1 WG2219774
Naphthalene 91-20-3 128 0.630 3.30 ND ND 1 WG2219774
Styrene 100-42-5 104 0.200 0.851 ND ND 1 WG2219774
1,1,2,2-Tetrachloroethane 79-34-5 168 0.200 1.37 ND ND 1 WG2219774
Tetrachloroethylene 127-18-4 166 0.200 1.36 ND ND 1 WG2219774
Tetrahydrofuran 109-99-9 72.10 0.200 0.590 ND ND 1 WG2219774
Toluene 108-88-3 92.10 0.500 1.88 5.58 21.0 1 WG2219774
1,2,4-Trichlorobenzene 120-82-1 181 0.630 4.66 ND ND 1 WG2219774
1,1,1-Trichloroethane 71-55-6 133 0.200 1.09 ND ND 1 WG2219774
1,1,2-Trichloroethane 79-00-5 133 0.200 1.09 ND ND 1 WG2219774
Trichloroethylene 79-01-6 131 0.200 1.07 0.860 4.61 1 WG2219774
1,2,4-Trimethylbenzene 95-63-6 120 0.200 0.982 1.76 8.64 1 WG2219774
1,3,5-Trimethylbenzene 108-67-8 120 0.200 0.982 0.765 3.75 1 WG2219774
2,2,4-Trimethylpentane 540-84-1 114.22 0.200 0.934 ND ND 1 WG2219774
Vinyl chloride 75-01-4 62.50 0.200 0.511 ND ND 1 WG2219774
Vinyl Bromide 593-60-2 106.95 0.200 0.875 ND ND 1 WG2219774
Vinyl acetate 108-05-4 86.10 0.630 2.22 ND ND 1 WG2219774
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:38 9 of 17
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:46 9 of 17
SAMPLE RESULTS - 03
L1701719
B6SG
Collected date/time: 02/01/24 14:56
Volatile Organic Compounds (MS) by Method TO-15
CAS #Mol. Wt.RDL1 RDL2 Result Result Qualifier Dilution Batch
Analyte ppbv ug/m3 ppbv ug/m3
Xylenes, Total 1330-20-7 106.16 0.600 2.61 12.1 52.5 1 WG2219774
m&p-Xylene 179601-23-1 106 0.400 1.73 8.69 37.7 1 WG2219774
o-Xylene 95-47-6 106 0.200 0.867 3.36 14.6 1 WG2219774
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 127 WG2219774
(S) 1,4-Bromofluorobenzene 460-00-4 175 60.0-140 97.4 WG2221728
1 Cp
2Tc
3Ss
4Cn
5Sr
6Qc
7Gl
8Al
9Sc
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:38 10 of 17
ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE:
EBI Consulting L1701719 02/20/24 15:46 10 of 17