ITB 8393 Addendum 3.pdf

CONNECTICUT

ADDENDUM #3

October 29, 2025

ITB 8393 170 Freight Street Slab Removal

Please Be Advised:

All proposals of the above captioned project are hereby notified that the Contract Documents for the above referenced project are amended as noted in this Addendum No. 3.

This Addendum shall be part of the Contract Documents for the above referenced project as provided in the Invitation to Bid.

The Contract Documents are hereby amended as follows:

1) The due date and time for submission of bids has been extended to November 7, 2025 at 11:00AM.

2) See attached/posted files “GCT66302-1 Concrete.pdf”, “GCT66330-2 Concrete.pdf” and “GCT66298-1 Concrete.pdf”.

NOTE: Each Proposal over $50,000.00 submitted shall be accompanied by a Proposal Security (a Certified Check or Bid Bond) in the amount of ten (10) percent of the Total Proposal Price.

Thank you.

Maureen McCauley

Assistant Director of Purchasing – City of Waterbury

OFFICE OF THE DIRECTOR OF PURCHASING

MAUREEN McCAULEY

ASSISTANT DIRECTOR OF PURCHASING

235 GRAND STREET • WATERBURY, CONNECTICUT 06702 • PHONE: (203) 574-6749 • FAX: (203) 597-3437

CT66302 - CT66303

Wednesday, July 09, 2025

Sample ID#s:

Attn: Harley Langford Tighe & Bond 213 Court St, Suite 1100 Middletown, CT 06457

SDG ID: GCT66302

Project ID: 3212220074A

Sincerely yours, Laboratory Director Phyllis Shiller

The contents of this report cannot be discussed with anyone other than the client listed above without their written consent.

NELAC - #NY11301

CT Lab Registration #PH-0618 MA Lab Registration #M-CT007 ME Lab Registration #CT-007 NH Lab Registration #213693-A,B

NJ Lab Registration #CT-003 NY Lab Registration #11301 PA Lab Registration #68-03530 RI Lab Registration #63 VT Lab Registration #VT11301

This laboratory is in compliance with the NELAC requirements of procedures used except where indicated.

This report contains results for the parameters tested, under the sampling conditions described on the Chain Of Custody, as received by the laboratory. This report is incomplete unless all pages indicated in the pagination at the bottom of the page are included.

A scanned version of the COC form accompanies the analytical report and is an exact duplicate of the original.

All soils, solids and sludges are reported on a dry weight basis unless otherwise noted in the sample comments.

587 East Middle Turnpike, P.O. Box 370, Manchester, CT 06040

Sample Id Cross Reference July 09, 2025

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

Client Id Lab Id Matrix

Project ID: 3212220074A

Col Date

CS-6-GRAB CT66302 CONCRETE 06/27/25 15:45

CS-6-COMP CT66303 CONCRETE 06/27/25 15:45

Sample Information Custody Information Matrix:

Location Code:

Rush Request:

P.O.#:

Collected by:

Received by:

Analyzed by:

CONCRETE

TIGHE-DAS

5 Day 3212220074A

06/27/25

SR1

see "By" below

ZH

Laboratory Data

CS-6-GRAB

Phoenix ID: CT66302

07/01/25 15:45 16:10

Parameter Result

RL/

PQL Units Date/Time By Reference

FOR: Attn: Harley Langford Tighe & Bond 213 Court St, Suite 1100 Middletown, CT 06457

Analysis Report July 09, 2025

Date Time

SDG ID: GCT66302

Client ID:

Project ID: 3212220074A

Dilution

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102

Environmental Laboratories, Inc.

99Percent Solid 07/01/25 cv SW846-%Solid%

CompletedField Extraction 06/27/25 SW5035A CompletedSoil Extraction for PCB 07/07/25 C/Z SW3546

Polychlorinated Biphenyls NDPCB-1016 330 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1221 330 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1232 330 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1242 330 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1248 330 07/08/25 SC SW8082Aug/Kg 10 410PCB-1254 330 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1260 330 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1262 330 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1268 330 07/08/25 SC SW8082Aug/Kg 10

QA/QC Surrogates

71% DCBP 07/08/25 SC 30 - 150 %% 10

70% DCBP (Confirmation) 07/08/25 SC 30 - 150 %% 10

65% TCMX 07/08/25 SC 30 - 150 %% 10

73% TCMX (Confirmation) 07/08/25 SC 30 - 150 %% 10

Volatiles ND1,1,1,2-Tetrachloroethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,1,1-Trichloroethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,1,2,2-Tetrachloroethane 3.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,1,2-Trichloroethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,1-Dichloroethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,1-Dichloroethene 5.0 07/02/25 JLI SW8260Dug/Kg 1

Ver 1

CS-6-GRAB

Phoenix I.D.: CT66302

Client ID:

3212220074AProject ID:

Parameter Result

RL/

PQL Units Date/Time ByDilution Reference

ND1,1-Dichloropropene 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,2,3-Trichlorobenzene 320 07/02/25 JLI SW8260Dug/Kg 50 ND1,2,3-Trichloropropane 320 07/02/25 JLI SW8260Dug/Kg 50 ND1,2,4-Trichlorobenzene 320 07/02/25 JLI SW8260Dug/Kg 50 ND1,2,4-Trimethylbenzene 320 07/02/25 JLI SW8260Dug/Kg 50 ND1,2-Dibromo-3-chloropropane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,2-Dibromoethane 0.50 07/02/25 JLI SW8260Dug/Kg 1 ND1,2-Dichlorobenzene 320 07/02/25 JLI SW8260Dug/Kg 50 ND1,2-Dichloroethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,2-Dichloropropane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,3,5-Trimethylbenzene 320 07/02/25 JLI SW8260Dug/Kg 50 ND1,3-Dichlorobenzene 320 07/02/25 JLI SW8260Dug/Kg 50 ND1,3-Dichloropropane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,4-Dichlorobenzene 320 07/02/25 JLI SW8260Dug/Kg 50 ND2,2-Dichloropropane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND2-Chlorotoluene 320 07/02/25 JLI SW8260Dug/Kg 50 ND2-Hexanone 25 07/02/25 JLI SW8260Dug/Kg 1 ND2-Isopropyltoluene 320 07/02/25 JLI SW8260Dug/Kg 50 ND4-Chlorotoluene 320 07/02/25 JLI SW8260Dug/Kg 50 ND4-Methyl-2-pentanone 25 07/02/25 JLI SW8260Dug/Kg 1 NDAcetone 250 07/02/25 JLI SW8260Dug/Kg 1 NDAcrylonitrile 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDBenzene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDBromobenzene 320 07/02/25 JLI SW8260Dug/Kg 50 NDBromochloromethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDBromodichloromethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDBromoform 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDBromomethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDCarbon Disulfide 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDCarbon tetrachloride 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDChlorobenzene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDChloroethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDChloroform 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDChloromethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDcis-1,2-Dichloroethene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDcis-1,3-Dichloropropene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDDibromochloromethane 3.0 07/02/25 JLI SW8260Dug/Kg 1 NDDibromomethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDDichlorodifluoromethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDEthylbenzene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDHexachlorobutadiene 200 07/02/25 JLI SW8260Dug/Kg 50 NDIsopropylbenzene 320 07/02/25 JLI SW8260Dug/Kg 50 NDm&p-Xylene 5.0 07/02/25 JLI SW8260Dug/Kg 1 34Methyl Ethyl Ketone 30 07/02/25 JLI SW8260Dug/Kg 1 NDMethyl t-butyl ether (MTBE) 10 07/02/25 JLI SW8260Dug/Kg 1 NDMethylene chloride 10 07/02/25 JLI SW8260Dug/Kg 1 NDNaphthalene 320 07/02/25 JLI SW8260Dug/Kg 50 NDn-Butylbenzene 320 07/02/25 JLI SW8260Dug/Kg 50 NDn-Propylbenzene 320 07/02/25 JLI SW8260Dug/Kg 50

Client ID:

3212220074AProject ID:

Parameter Result

RL/

PQL Units Date/Time ByDilution Reference

NDo-Xylene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDp-Isopropyltoluene 320 07/02/25 JLI SW8260Dug/Kg 50 NDsec-Butylbenzene 320 07/02/25 JLI SW8260Dug/Kg 50 NDStyrene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDtert-Butylbenzene 320 07/02/25 JLI SW8260Dug/Kg 50 NDTetrachloroethene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDTetrahydrofuran (THF) 10 07/02/25 JLI SW8260Dug/Kg 1 NDToluene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDTotal Xylenes 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDtrans-1,2-Dichloroethene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDtrans-1,3-Dichloropropene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDtrans-1,4-dichloro-2-butene 640 07/02/25 JLI SW8260Dug/Kg 50 NDTrichloroethene 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDTrichlorofluoromethane 5.0 07/02/25 JLI SW8260Dug/Kg 1 NDTrichlorotrifluoroethane 10 07/02/25 JLI SW8260Dug/Kg 1 NDVinyl chloride 5.0 07/02/25 JLI SW8260Dug/Kg 1

QA/QC Surrogates 88% 1,2-dichlorobenzene-d4 07/02/25 JLI 70 - 130 %% 1 63% Bromofluorobenzene 07/02/25 JLI 70 - 130 %% 31

117% Dibromofluoromethane 07/02/25 JLI 70 - 130 %% 1 85% Toluene-d8 07/02/25 JLI 70 - 130 %% 1 96% 1,2-dichlorobenzene-d4 (50x) 07/02/25 JLI 70 - 130 %% 50 96% Bromofluorobenzene (50x) 07/02/25 JLI 70 - 130 %% 50 91% Dibromofluoromethane (50x) 07/02/25 JLI 70 - 130 %% 50 98% Toluene-d8 (50x) 07/02/25 JLI 70 - 130 %% 50

Oxygenates & Dioxane ND1,4-Dioxane 100 07/02/25 JLI SW8260D (OXY)ug/Kg 1 NDDiethyl ether 5.0 07/02/25 JLI SW8260D (OXY)ug/Kg 1 NDEthyl tert-butyl ether 5.0 07/02/25 JLI SW8260D (OXY)ug/Kg 1 NDtert-amyl methyl ether 5.0 07/02/25 JLI SW8260D (OXY)ug/Kg 1

Client ID:

3212220074AProject ID:

Parameter Result

RL/

PQL Units Date/Time ByDilution Reference

Comments:

Volatile Comment:

There was a suppression of the last internal standard in the low level analysis, all affected compounds are reported from the methanol preserved high level analysis which did not exhibit this interference.

All soils, solids and sludges are reported on a dry weight basis unless otherwise noted in the sample comments.

Phyllis Shiller, Laboratory Director July 09, 2025

3 = This parameter exceeds laboratory specified limits.

If you are the client above and have any questions concerning this testing, please do not hesitate to contact Phoenix Client Services at ext.200.

The contents of this report cannot be discussed with anyone other than the client listed above without their written consent.

Reviewed and Released by: Greg Lawrence, Assistant Lab Director

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level QA/QC Surrogates: Surrogates are compounds (preceeded with a %) added by the lab to determine analysis efficiency. Surrogate results(%) listed in the report are not "detected" compounds.

Location Code:

Rush Request:

P.O.#:

Collected by:

Received by:

Analyzed by:

CONCRETE

TIGHE-DAS

5 Day 3212220074A

06/27/25

SR1

see "By" below

ZH

Laboratory Data

CS-6-COMP

Phoenix ID: CT66303

07/01/25 15:45 16:10

Parameter Result

RL/

PQL Units Date/Time By Reference

FOR: Attn: Harley Langford Tighe & Bond 213 Court St, Suite 1100 Middletown, CT 06457

Analysis Report July 09, 2025

Date Time

SDG ID: GCT66302

Client ID:

Project ID: 3212220074A

Dilution

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102

Environmental Laboratories, Inc.

< 0.35Silver 0.35 07/02/25 TH SW6010Dmg/Kg 1 0.83Arsenic 0.69 07/02/25 TH SW6010Dmg/Kg 1 42.3Barium 0.35 07/02/25 TH SW6010Dmg/Kg 1

< 0.28Beryllium 0.28 07/02/25 TH SW6010Dmg/Kg 1 0.36Cadmium 0.35 07/02/25 TH SW6010Dmg/Kg 1 7.36Chromium 0.35 07/02/25 TH SW6010Dmg/Kg 1 13.8Copper 0.7 07/02/25 TH SW6010Dmg/kg 1

< 0.02Mercury 0.02 07/07/25 ZT/AJ1 SW7471Bmg/Kg 2 4.85Nickel 0.35 07/02/25 TH SW6010Dmg/Kg 1 2.01Lead 0.35 07/02/25 TH SW6010Dmg/Kg 1 < 3.5Antimony 3.5 07/02/25 TH SW6010Dmg/Kg 1 < 1.4Selenium 1.4 07/02/25 TH SW6010Dmg/Kg 1 < 3.1Thallium 3.1 07/02/25 TH SW6010Dmg/Kg 1 10.6Vanadium 0.35 07/02/25 TH SW6010Dmg/Kg 1 21.0Zinc 0.7 07/02/25 TH SW6010Dmg/Kg 1

NegativeCorrosivity 07/01/25 KG SW846-CorrPos/Neg 1 >200Flash Point 200 07/07/25 G SW1010BDegree F 1

PassedIgnitability 140 07/07/25 G SW846-Ignitdegree F 1 10.9pH at 22C - Soil 1.00 07/01/25 23:26 KG SW846 9045DpH Units 1 < 5Reactivity Cyanide 5 07/02/25 J/N/G SW846 7.3.3.1/90mg/Kg 1 < 20Reactivity Sulfide 20 07/02/25 JB/GD SW846 CH7mg/Kg 1

NegativeReactivity 07/02/25 JB/GD SW846-ReactPos/Neg 1

CompletedMercury Digestion 07/07/25 AC1/AC1 SW7471B CompletedExtraction of ETPH 07/03/25 S/H SW3546 CompletedSoil Extraction for SVOA 07/07/25 SD/SD SW3546 CompletedTotal Metals Digest 07/01/25 N/AG/BF SW3050B

CS-6-COMP

Phoenix I.D.: CT66303

Client ID:

3212220074AProject ID:

Parameter Result

RL/

PQL Units Date/Time ByDilution Reference

TPH by GC (Extractable Products) NDExt. Petroleum H.C. (C9-C36) 49 07/07/25 JRB CTETPHmg/Kg 1 NDIdentification 07/07/25 JRB CTETPHmg/Kg 1

QA/QC Surrogates 52% Terphenyl-d14 07/07/25 JRB 60 - 120 %% 31 81% Tricosane(C23) 07/07/25 JRB 60 - 120 %% 1

Semivolatiles ND1,2,4,5-Tetrachlorobenzene 100 07/07/25 MR SW8270Eug/Kg 1 ND1,2,4-Trichlorobenzene 230 07/07/25 MR SW8270Eug/Kg 1 ND1,2-Dichlorobenzene 230 07/07/25 MR SW8270Eug/Kg 1 ND1,2-Diphenylhydrazine 200 07/07/25 MR SW8270Eug/Kg 1 ND1,3-Dichlorobenzene 230 07/07/25 MR SW8270Eug/Kg 1 ND1,4-Dichlorobenzene 230 07/07/25 MR SW8270Eug/Kg 1 ND2,2'-Oxybis(1-Chloropropane) 230 07/07/25 MR SW8270Eug/Kg 1 ND2,4,5-Trichlorophenol 230 07/07/25 MR SW8270Eug/Kg 1 ND2,4,6-Trichlorophenol 200 07/07/25 MR SW8270Eug/Kg 1 ND2,4-Dichlorophenol 230 07/07/25 MR SW8270Eug/Kg 1 ND2,4-Dimethylphenol 230 07/07/25 MR SW8270Eug/Kg 1 ND2,4-Dinitrophenol 300 07/07/25 MR SW8270Eug/Kg 1 ND2,4-Dinitrotoluene 200 07/07/25 MR SW8270Eug/Kg 1 ND2,6-Dinitrotoluene 200 07/07/25 MR SW8270Eug/Kg 1 ND2-Chloronaphthalene 230 07/07/25 MR SW8270Eug/Kg 1 ND2-Chlorophenol 230 07/07/25 MR SW8270Eug/Kg 1 ND2-Methylnaphthalene 230 07/07/25 MR SW8270Eug/Kg 1 ND2-Methylphenol (o-cresol) 230 07/07/25 MR SW8270Eug/Kg 1 ND2-Nitroaniline 300 07/07/25 MR SW8270Eug/Kg 1 ND2-Nitrophenol 230 07/07/25 MR SW8270Eug/Kg 1 ND3&4-Methylphenol (m&p-cresol) 320 07/07/25 MR SW8270Eug/Kg 1 ND3,3'-Dichlorobenzidine 200 07/07/25 MR SW8270Eug/Kg 1 ND3-Nitroaniline 300 07/07/25 MR SW8270Eug/Kg 1 ND4,6-Dinitro-2-methylphenol 300 07/07/25 MR SW8270Eug/Kg 1 ND4-Bromophenyl phenyl ether 320 07/07/25 MR SW8270Eug/Kg 1 ND4-Chloro-3-methylphenol 230 07/07/25 MR SW8270Eug/Kg 1 ND4-Chloroaniline 200 07/07/25 MR SW8270Eug/Kg 1 ND4-Chlorophenyl phenyl ether 230 07/07/25 MR SW8270Eug/Kg 1 ND4-Nitroaniline 300 07/07/25 MR SW8270Eug/Kg 1 ND4-Nitrophenol 230 07/07/25 MR SW8270Eug/Kg 1 NDAcenaphthene 230 07/07/25 MR SW8270Eug/Kg 1 NDAcenaphthylene 230 07/07/25 MR SW8270Eug/Kg 1 NDAcetophenone 230 07/07/25 MR SW8270Eug/Kg 1 NDAniline 200 07/07/25 MR SW8270Eug/Kg 1 NDAnthracene 230 07/07/25 MR SW8270Eug/Kg 1 NDBenz(a)anthracene 230 07/07/25 MR SW8270Eug/Kg 1 NDBenzidine 200 07/07/25 MR SW8270Eug/Kg 1 NDBenzo(a)pyrene 230 07/07/25 MR SW8270Eug/Kg 1 NDBenzo(b)fluoranthene 230 07/07/25 MR SW8270Eug/Kg 1 NDBenzo(ghi)perylene 230 07/07/25 MR SW8270Eug/Kg 1 NDBenzo(k)fluoranthene 230 07/07/25 MR SW8270Eug/Kg 1

Client ID:

3212220074AProject ID:

Parameter Result

RL/

PQL Units Date/Time ByDilution Reference

NDBenzoic acid 650 07/07/25 MR SW8270Eug/Kg 1 NDBenzyl butyl phthalate 230 07/07/25 MR SW8270Eug/Kg 1 NDBis(2-chloroethoxy)methane 230 07/07/25 MR SW8270Eug/Kg 1 NDBis(2-chloroethyl)ether 320 07/07/25 MR SW8270Eug/Kg 1 NDBis(2-ethylhexyl)phthalate 320 07/07/25 MR SW8270Eug/Kg 1 NDCarbazole 200 07/07/25 MR SW8270Eug/Kg 1 NDChrysene 230 07/07/25 MR SW8270Eug/Kg 1 NDDibenz(a,h)anthracene 230 07/07/25 MR SW8270Eug/Kg 1 NDDibenzofuran 200 07/07/25 MR SW8270Eug/Kg 1 NDDiethyl phthalate 230 07/07/25 MR SW8270Eug/Kg 1 NDDimethylphthalate 230 07/07/25 MR SW8270Eug/Kg 1 NDDi-n-butylphthalate 320 07/07/25 MR SW8270Eug/Kg 1 NDDi-n-octylphthalate 230 07/07/25 MR SW8270Eug/Kg 1 NDFluoranthene 230 07/07/25 MR SW8270Eug/Kg 1 NDFluorene 230 07/07/25 MR SW8270Eug/Kg 1 NDHexachlorobenzene 230 07/07/25 MR SW8270Eug/Kg 1 NDHexachlorobutadiene 200 07/07/25 MR SW8270Eug/Kg 1 NDHexachlorocyclopentadiene 230 07/07/25 MR SW8270Eug/Kg 1 NDHexachloroethane 230 07/07/25 MR SW8270Eug/Kg 1 NDIndeno(1,2,3-cd)pyrene 230 07/07/25 MR SW8270Eug/Kg 1 NDIsophorone 230 07/07/25 MR SW8270Eug/Kg 1 NDNaphthalene 230 07/07/25 MR SW8270Eug/Kg 1 NDNitrobenzene 200 07/07/25 MR SW8270Eug/Kg 1 NDN-Nitrosodimethylamine 200 07/07/25 MR SW8270Eug/Kg 1 NDN-Nitrosodi-n-propylamine 200 07/07/25 MR SW8270Eug/Kg 1 NDN-Nitrosodiphenylamine 200 07/07/25 MR SW8270Eug/Kg 1 NDPentachloronitrobenzene 140 07/07/25 MR SW8270Eug/Kg 1 NDPentachlorophenol 320 07/07/25 MR SW8270Eug/Kg 1 NDPhenanthrene 230 07/07/25 MR SW8270Eug/Kg 1 NDPhenol 230 07/07/25 MR SW8270Eug/Kg 1 NDPyrene 230 07/07/25 MR SW8270Eug/Kg 1 NDPyridine 200 07/07/25 MR SW8270Eug/Kg 1

QA/QC Surrogates 83% 2,4,6-Tribromophenol 07/07/25 MR 30 - 130 %% 1 79% 2-Fluorobiphenyl 07/07/25 MR 30 - 130 %% 1 70% 2-Fluorophenol 07/07/25 MR 30 - 130 %% 1 73% Nitrobenzene-d5 07/07/25 MR 30 - 130 %% 1 75% Phenol-d5 07/07/25 MR 30 - 130 %% 1 88% Terphenyl-d14 07/07/25 MR 30 - 130 %% 1

Client ID:

3212220074AProject ID:

Parameter Result

RL/

PQL Units Date/Time ByDilution Reference

Comments:

Per 1.4.6 of EPA method 8270D, 1,2-Diphenylhydrazine is unstable and readily converts to Azobenzene. Azobenzene is used for the calibration of 1,2-Diphenylhydrazine.

Corrosivity is based solely on the pH analysis performed above.

Ignitability is based solely on the results of the closed cup flashpoint analysis performed above. Passed is >140 degree F.

The regulatory hold time for pH is immediately. This pH was performed in the laboratory and may be considered outside of hold-time.

The reactivity, reported above, is based only on the EPA Interim Guidance for Reactive Cyanide. This method is no longer listed in the current version of SW-846.

The reactivity, reported above, is based only on the EPA Interim Guidance for Reactive Sulfide. This method is no longer listed in the current version of SW-846.

Results are reported on an ``as received`` basis, and are not corrected for dry weight.

All soils, solids and sludges are reported on a dry weight basis unless otherwise noted in the sample comments.

Phyllis Shiller, Laboratory Director July 09, 2025

3 = This parameter exceeds laboratory specified limits.

If you are the client above and have any questions concerning this testing, please do not hesitate to contact Phoenix Client Services at ext.200.

The contents of this report cannot be discussed with anyone other than the client listed above without their written consent.

Reviewed and Released by: Greg Lawrence, Assistant Lab Director

RL/PQL=Reporting/Practical Quantitation Level ND=Not Detected BRL=Below Reporting Level QA/QC Surrogates: Surrogates are compounds (preceeded with a %) added by the lab to determine analysis efficiency. Surrogate results(%) listed in the report are not "detected" compounds.

QA/QC Data

Parameter Blk Blank RL

MS

MSD

MS

RPD

QA/QC Report July 09, 2025

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

LCS

Dup

RPD

LCSD

LCS

RPD

Rec

Limits

RPD

Limits Sample Result

Dup Result

QA/QC Batch 792219 (mg/kg), QC Sample No: CT66267 (CT66303) Mercury - Soil 109 90.4BRL 18.7108NC 97.4 10.3 70 - 130 30<0.03 <0.030.02

Additional Mercury Criteria: LCS acceptance range is 80-120% for aqueous and for soils the acceptance range is set by vendor limits. MS acceptance range is 75-125% for aqueous and 80-120% for soils.

Comment:

QA/QC Batch 791698 (mg/kg), QC Sample No: CT66616 (CT66303)

ICP Metals - Soil Antimony 80.7BRL 85.8NC 90.1 4.9 75 - 125 30<3.8 <3.43.3 Arsenic 87.4BRL 90.5NC 92.3 2.0 75 - 125 302.05 2.330.67 Barium 95.7BRL 89.14.20 87.2 2.2 75 - 125 3053.4 55.70.33 Beryllium 94.1BRL 96.6NC 104 7.4 75 - 125 300.32 0.310.27 Cadmium 92.0BRL 96.3NC 101 4.8 75 - 125 300.55 0.550.33 Chromium 95.2BRL 97.28.10 104 6.8 75 - 125 3013.1 14.20.33 Copper 95.1BRL 98.74.10 104 5.2 75 - 125 3052.8 50.70.67 Lead 70.1BRL 98.923.6 97.8 1.1 m75 - 125 30858 6770.33 Nickel 91.9BRL 96.94.80 104 7.1 75 - 125 3012.8 12.20.33 Selenium 77.4BRL 82.4NC 84.6 2.6 75 - 125 30<1.5 <1.41.3 Silver 93.7BRL 95.3NC 98.5 3.3 75 - 125 30<0.38 <0.340.33 Thallium 91.5BRL 96.9NC 97.7 0.8 75 - 125 30<3.4 <3.13.0 Vanadium 101BRL 10113.1 105 3.9 75 - 125 3042.7 48.70.33 Zinc 94.3BRL 98.33.90 104 5.6 75 - 125 30132 1270.67

Additional Criteria: LCS acceptance range is 80-120% for aqueous and for soils the acceptance range is set by vendor limits. MS acceptance range 75-125%.

Comment:

m = This parameter is outside laboratory MS/MSD specified recovery limits.

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QA/QC Report July 09, 2025

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

LCS

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Dup Result

QA/QC Batch 791755 (mg/Kg), QC Sample No: CT60122 (CT66303) Reactivity Cyanide BRL 96.0NC 85 - 115 30<5 <5.25 Reactivity Sulfide BRL 92.0NC 80 - 120 30<20 <2020

QA/QC Batch 792286 (Degree F), QC Sample No: CT66096 (CT66303) Flash Point 101NC 75 - 125 30>200 >200

Additional criteria matrix spike acceptance range is 75-125%.

Comment:

QA/QC Batch 791723 (PH), QC Sample No: CT66290 (CT66303) pH 1000.30 85 - 115 207.98 7.96

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QA/QC Report July 09, 2025

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

LCS

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QA/QC Batch 792131 (mg/Kg), QC Sample No: CT67823 (CT66303)

TPH by GC (Extractable Products) Ext. Petroleum H.C. (C9-C36) 97 155ND 46.069 71 2.9 m,r60 - 120 3050 % Tricosane(C23) 80 6062 28.687 80 8.4 60 - 120 30%

Additional surrogate criteria: LCS acceptance range is 60-120% MS acceptance range 50-150%. The ETPH/DRO LCS has been normalized based on the alkane calibration.

Comment:

QA/QC Batch 792308 (ug/Kg), QC Sample No: CT66117 (CT66302)

Polychlorinated Biphenyls

PCB-1016 65 64ND 1.684 75 11.3 40 - 140 3033

PCB-1221 ND 40 - 140 3033

PCB-1232 ND 40 - 140 3033

PCB-1242 ND 40 - 140 3033

PCB-1248 ND 40 - 140 3033

PCB-1254 ND 40 - 140 3033

PCB-1260 60 60ND 0.081 75 7.7 40 - 140 3033

PCB-1262 ND 40 - 140 3033

PCB-1268 ND 40 - 140 3033

% DCBP (Surrogate Rec) 56 5375 5.578 72 8.0 30 - 150 30% % DCBP (Surrogate Rec) (Confirm 61 5684 8.586 80 7.2 30 - 150 30% % TCMX (Surrogate Rec) 61 5582 10.381 75 7.7 30 - 150 30% % TCMX (Surrogate Rec) (Confirm 69 6386 9.183 77 7.5 30 - 150 30%

QA/QC Batch 792201 (ug/kg), QC Sample No: CT65593 (CT66303)

Semivolatiles 1,2,4,5-Tetrachlorobenzene 71 64ND 10.470 68 2.9 40 - 140 30230 1,2,4-Trichlorobenzene 69 61ND 12.368 67 1.5 40 - 140 30230 1,2-Dichlorobenzene 67 57ND 16.168 64 6.1 40 - 140 30180 1,2-Diphenylhydrazine 85 80ND 6.184 78 7.4 40 - 140 30230 1,3-Dichlorobenzene 63 56ND 11.864 63 1.6 40 - 140 30230 1,4-Dichlorobenzene 64 55ND 15.165 62 4.7 40 - 140 30230 2,2'-Oxybis(1-Chloropropane) 63 55ND 13.661 61 0.0 40 - 140 30230 2,4,5-Trichlorophenol 90 86ND 4.590 80 11.8 40 - 140 30230 2,4,6-Trichlorophenol 95 88ND 7.791 83 9.2 30 - 130 30130 2,4-Dichlorophenol 84 76ND 10.079 76 3.9 30 - 130 30130 2,4-Dimethylphenol 86 78ND 9.880 77 3.8 30 - 130 30230 2,4-Dinitrophenol 99 88ND 11.8102 97 5.0 30 - 130 30230 2,4-Dinitrotoluene 100 95ND 5.199 93 6.3 30 - 130 30130 2,6-Dinitrotoluene 98 92ND 6.398 89 9.6 40 - 140 30130 2-Chloronaphthalene 83 75ND 10.182 76 7.6 40 - 140 30230 2-Chlorophenol 81 68ND 17.476 73 4.0 30 - 130 30230 2-Methylnaphthalene 89 80ND 10.785 84 1.2 40 - 140 30230 2-Methylphenol (o-cresol) 86 75ND 13.780 76 5.1 40 - 140 30230

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SDG I.D.: GCT66302

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2-Nitroaniline 116 114ND 1.7118 112 5.2 40 - 140 30330 2-Nitrophenol 74 65ND 12.970 70 0.0 40 - 140 30230 3&4-Methylphenol (m&p-cresol) 94 86ND 8.989 84 5.8 30 - 130 30230 3,3'-Dichlorobenzidine 125 121ND 3.3122 115 5.9 40 - 140 30130 3-Nitroaniline 103 104ND 1.0107 98 8.8 40 - 140 30330 4,6-Dinitro-2-methylphenol 101 94ND 7.2104 98 5.9 30 - 130 30230 4-Bromophenyl phenyl ether 86 79ND 8.583 76 8.8 40 - 140 30230 4-Chloro-3-methylphenol 87 82ND 5.980 80 0.0 30 - 130 30230 4-Chloroaniline 80 74ND 7.877 77 0.0 40 - 140 30230 4-Chlorophenyl phenyl ether 94 88ND 6.693 86 7.8 40 - 140 30230 4-Nitroaniline 95 91ND 4.393 87 6.7 40 - 140 30230 4-Nitrophenol 89 87ND 2.386 77 11.0 30 - 130 30230 Acenaphthene 86 79ND 8.585 79 7.3 30 - 130 30230 Acenaphthylene 75 71ND 5.576 71 6.8 40 - 140 30130 Acetophenone 80 69ND 14.876 73 4.0 40 - 140 30230 Aniline 69 63ND 9.170 68 2.9 40 - 140 30330 Anthracene 93 88ND 5.592 85 7.9 40 - 140 30230 Benz(a)anthracene 89 85ND 4.689 84 5.8 40 - 140 30230 Benzidine 60 71ND 16.887 47 59.7 r40 - 140 30330 Benzo(a)pyrene 94 88ND 6.692 86 6.7 40 - 140 30130 Benzo(b)fluoranthene 91 86ND 5.691 83 9.2 40 - 140 30160 Benzo(ghi)perylene 93 87ND 6.794 87 7.7 40 - 140 30230 Benzo(k)fluoranthene 87 84ND 3.589 84 5.8 40 - 140 30230 Benzoic Acid 93 93ND 0.0106 94 12.0 30 - 130 30670 Benzyl butyl phthalate 94 91ND 3.295 90 5.4 40 - 140 30230 Bis(2-chloroethoxy)methane 74 67ND 9.972 70 2.8 40 - 140 30230 Bis(2-chloroethyl)ether 73 62ND 16.370 67 4.4 40 - 140 30130 Bis(2-ethylhexyl)phthalate 93 89ND 4.491 87 4.5 40 - 140 30230 Carbazole 95 90ND 5.495 89 6.5 40 - 140 30230 Chrysene 88 85ND 3.589 86 3.4 40 - 140 30230 Dibenz(a,h)anthracene 105 99ND 5.9105 98 6.9 40 - 140 30130 Dibenzofuran 89 84ND 5.889 83 7.0 40 - 140 30230 Diethyl phthalate 92 87ND 5.692 86 6.7 40 - 140 30230 Dimethylphthalate 89 84ND 5.889 83 7.0 40 - 140 30230 Di-n-butylphthalate 97 93ND 4.297 91 6.4 40 - 140 30670 Di-n-octylphthalate 108 104ND 3.8105 100 4.9 40 - 140 30230 Fluoranthene 97 93ND 4.297 92 5.3 40 - 140 30230 Fluorene 96 91ND 5.396 90 6.5 40 - 140 30230 Hexachlorobenzene 88 83ND 5.889 81 9.4 40 - 140 30130 Hexachlorobutadiene 66 57ND 14.664 63 1.6 40 - 140 30230 Hexachlorocyclopentadiene 18 19ND 5.445 49 8.5 m40 - 140 30230 Hexachloroethane 64 55ND 15.165 63 3.1 40 - 140 30130 Indeno(1,2,3-cd)pyrene 93 89ND 4.493 87 6.7 40 - 140 30230 Isophorone 71 65ND 8.868 67 1.5 40 - 140 30130 Naphthalene 72 65ND 10.270 69 1.4 40 - 140 30230 Nitrobenzene 79 68ND 15.076 74 2.7 40 - 140 30130 N-Nitrosodimethylamine 68 58ND 15.967 63 6.2 40 - 140 30230 N-Nitrosodi-n-propylamine 82 73ND 11.678 74 5.3 40 - 140 30130 N-Nitrosodiphenylamine 88 84ND 4.788 82 7.1 40 - 140 30130 Pentachloronitrobenzene 89 86ND 3.490 83 8.1 40 - 140 30230 Pentachlorophenol 99 98ND 1.097 90 7.5 30 - 130 30230 Phenanthrene 89 86ND 3.490 83 8.1 40 - 140 30130 Phenol 82 73ND 11.678 74 5.3 30 - 130 30230

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SDG I.D.: GCT66302

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Limits

Pyrene 95 90ND 5.495 89 6.5 30 - 130 30230 Pyridine 53 46ND 14.152 51 1.9 40 - 140 30230 % 2,4,6-Tribromophenol 96 9784 1.097 91 6.4 30 - 130 30% % 2-Fluorobiphenyl 82 7676 7.682 78 5.0 30 - 130 30% % 2-Fluorophenol 81 6976 16.076 74 2.7 30 - 130 30% % Nitrobenzene-d5 76 6873 11.174 73 1.4 30 - 130 30% % Phenol-d5 85 7876 8.681 77 5.1 30 - 130 30% % Terphenyl-d14 92 9088 2.292 87 5.6 30 - 130 30%

Additional 8270 criteria: 10% of compounds can be outside of acceptance criteria as long as recovery is at least 10%. (Acid surrogates acceptance range for aqueous samples: 15-110%, for soils 30-130%)

Comment:

QA/QC Batch 792039 (ug/kg), QC Sample No: CT65685 (CT66302)

Volatiles (Low Level) 1,1,1,2-Tetrachloroethane 106 108ND 1.9108 111 2.7 70 - 130 205.0 1,1,1-Trichloroethane 105 107ND 1.9106 109 2.8 70 - 130 205.0 1,1,2,2-Tetrachloroethane 104 103ND 1.095 102 7.1 70 - 130 203.0 1,1,2-Trichloroethane 100 100ND 0.099 100 1.0 70 - 130 205.0 1,1-Dichloroethane 99 99ND 0.0101 106 4.8 70 - 130 205.0 1,1-Dichloroethene 98 98ND 0.0102 105 2.9 70 - 130 205.0 1,1-Dichloropropene 98 100ND 2.097 101 4.0 70 - 130 205.0 1,2-Dibromo-3-chloropropane 103 111ND 7.5107 112 4.6 70 - 130 205.0 1,2-Dibromoethane 106 105ND 0.9104 105 1.0 70 - 130 205.0 1,2-Dichloroethane 97 97ND 0.095 99 4.1 70 - 130 205.0 1,2-Dichloropropane 98 100ND 2.098 100 2.0 70 - 130 205.0 1,3-Dichloropropane 102 101ND 1.097 101 4.0 70 - 130 205.0 1,4-dioxane 105 102ND 2.998 101 3.0 70 - 130 20100 2,2-Dichloropropane 114 117ND 2.6111 117 5.3 70 - 130 205.0 2-Hexanone 85 85ND 0.089 98 9.6 70 - 130 2025 4-Methyl-2-pentanone 94 92ND 2.294 102 8.2 70 - 130 2025 Acetone 78 76ND 2.678 86 9.8 70 - 130 2010 Acrylonitrile 94 90ND 4.396 103 7.0 70 - 130 205.0 Benzene 98 98ND 0.096 99 3.1 70 - 130 201.0 Bromochloromethane 101 98ND 3.0101 100 1.0 70 - 130 205.0 Bromodichloromethane 101 102ND 1.0103 107 3.8 70 - 130 205.0 Bromoform 99 106ND 6.8112 112 0.0 70 - 130 205.0 Bromomethane 96 93ND 3.2100 106 5.8 70 - 130 205.0 Carbon Disulfide 91 91ND 0.0102 107 4.8 70 - 130 205.0 Carbon tetrachloride 101 108ND 6.7108 112 3.6 70 - 130 205.0 Chlorobenzene 102 101ND 1.0101 101 0.0 70 - 130 205.0 Chloroethane 102 105ND 2.9108 115 6.3 70 - 130 205.0 Chloroform 101 100ND 1.099 103 4.0 70 - 130 205.0 Chloromethane 98 100ND 2.0102 110 7.5 70 - 130 205.0 cis-1,2-Dichloroethene 97 97ND 0.0100 103 3.0 70 - 130 205.0 cis-1,3-Dichloropropene 105 106ND 0.9105 108 2.8 70 - 130 205.0 Dibromochloromethane 105 108ND 2.8109 109 0.0 70 - 130 203.0 Dibromomethane 98 98ND 0.095 98 3.1 70 - 130 205.0 Dichlorodifluoromethane 101 101ND 0.0109 114 4.5 70 - 130 205.0 Diethyl ether 96 94ND 2.199 105 5.9 70 - 130 205.0 Ethyl tert-butyl ether 114 111ND 2.7108 113 4.5 70 - 130 205.0 Ethylbenzene 100 101ND 1.0101 100 1.0 70 - 130 201.0 m&p-Xylene 99 100ND 1.0100 101 1.0 70 - 130 202.0 Methyl ethyl ketone 85 80ND 6.187 91 4.5 70 - 130 205.0

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SDG I.D.: GCT66302

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Methyl t-butyl ether (MTBE) 100 97ND 3.0100 103 3.0 70 - 130 201.0 Methylene chloride 92 92ND 0.095 97 2.1 70 - 130 205.0 o-Xylene 100 101ND 1.099 101 2.0 70 - 130 202.0 Styrene 95 97ND 2.1101 101 0.0 70 - 130 205.0 tert-amyl methyl ether 116 115ND 0.9107 110 2.8 70 - 130 205.0 Tetrachloroethene 99 100ND 1.0101 100 1.0 70 - 130 205.0 Tetrahydrofuran (THF) 92 88ND 4.489 100 11.6 70 - 130 205.0 Toluene 97 97ND 0.097 98 1.0 70 - 130 201.0 trans-1,2-Dichloroethene 97 98ND 1.0101 106 4.8 70 - 130 205.0 trans-1,3-Dichloropropene 111 110ND 0.9112 115 2.6 70 - 130 205.0 Trichloroethene 98 99ND 1.0100 100 0.0 70 - 130 205.0 Trichlorofluoromethane 98 100ND 2.0105 108 2.8 70 - 130 205.0 Trichlorotrifluoroethane 97 98ND 1.0102 102 0.0 70 - 130 205.0 Vinyl chloride 98 98ND 0.0103 109 5.7 70 - 130 205.0 % 1,2-dichlorobenzene-d4 100 101100 1.099 100 1.0 70 - 130 20% % Bromofluorobenzene 99 100100 1.0100 100 0.0 70 - 130 20% % Dibromofluoromethane 101 10097 1.0100 101 1.0 70 - 130 20% % Toluene-d8 99 100100 1.0100 100 0.0 70 - 130 20%

Additional 8260 criteria: 10% of LCS/LCSD compounds can be outside of acceptance criteria as long as recovery is 40-160%.

Comment:

QA/QC Batch 792039H (ug/kg), QC Sample No: CT65685 50X (CT66302 (50X) )

Volatiles (High Level) 1,2,3-Trichlorobenzene 109 115ND 5.4113 113 0.0 70 - 130 20250 1,2,3-Trichloropropane 89 93ND 4.493 91 2.2 70 - 130 20250 1,2,4-Trichlorobenzene 109 116ND 6.2117 115 1.7 70 - 130 20250 1,2,4-Trimethylbenzene 101 104ND 2.9102 101 1.0 70 - 130 20250 1,2-Dichlorobenzene 99 105ND 5.9103 103 0.0 70 - 130 20250 1,3,5-Trimethylbenzene 102 106ND 3.8103 103 0.0 70 - 130 20250 1,3-Dichlorobenzene 102 106ND 3.8106 104 1.9 70 - 130 20250 1,4-Dichlorobenzene 100 106ND 5.8104 103 1.0 70 - 130 20250 2-Chlorotoluene 102 103ND 1.0102 101 1.0 70 - 130 20250 2-Isopropyltoluene 104 106ND 1.9105 105 0.0 70 - 130 20250 4-Chlorotoluene 101 106ND 4.8103 102 1.0 70 - 130 20250 Bromobenzene 100 103ND 3.0101 101 0.0 70 - 130 20250 Hexachlorobutadiene 115 119ND 3.4116 114 1.7 70 - 130 20250 Isopropylbenzene 104 107ND 2.8103 104 1.0 70 - 130 20250 Naphthalene 105 110ND 4.7108 105 2.8 70 - 130 20250 n-Butylbenzene 103 107ND 3.8107 105 1.9 70 - 130 20250 n-Propylbenzene 105 107ND 1.9105 104 1.0 70 - 130 20250 p-Isopropyltoluene 105 108ND 2.8107 105 1.9 70 - 130 20250 sec-Butylbenzene 103 105ND 1.9103 102 1.0 70 - 130 20250 tert-Butylbenzene 102 104ND 1.9102 102 0.0 70 - 130 20250 trans-1,4-dichloro-2-butene 91 101ND 10.4110 106 3.7 70 - 130 20250 % 1,2-dichlorobenzene-d4 101 10498 2.9100 102 2.0 70 - 130 20% % Bromofluorobenzene 101 99101 2.099 99 0.0 70 - 130 20% % Dibromofluoromethane 95 9695 1.0100 99 1.0 70 - 130 20% % Toluene-d8 98 10099 2.0100 100 0.0 70 - 130 20%

Additional 8260 criteria: 10% of LCS/LCSD compounds can be outside of acceptance criteria as long as recovery is 40-160%.

Comment:

m = This parameter is outside laboratory MS/MSD specified recovery limits.

r = This parameter is outside laboratory RPD specified recovery limits.

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SDG I.D.: GCT66302

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MS

Phyllis Shiller, Laboratory Director

If there are any questions regarding this data, please call Phoenix Client Services at extension 200.

July 09, 2025

MS Dup

RPD

LCS

LCSD

NC

Intf

Matrix Spike Matrix Spike Duplicate

Relative Percent Difference Laboratory Control Sample Laboratory Control Sample Duplicate

No Criteria Interference

(ISO) Isotope Dilution-

Sample Criteria Exceedances ReportWednesday, July 09, 2025

Acode Phoenix Analyte CriteriaResult RLSampNo Analysis

UnitsCriteria

GCT66302 - TIGHE-DASCriteria: CT: GAM, RC, SWP

RL

Criteria

State: CT

#Type!*** No Data to Display ***

Phoenix Laboratories does not assume responsibility for the data contained in this exceedance report. It is provided as an additional tool to identify requested criteria exceedences. All efforts are made to ensure the accuracy of the data (obtained from appropriate agencies). A lack of exceedence information does not necessarily suggest conformance to the criteria. It is ultimately the site professional's responsibility to determine appropriate compliance.

Phoenix Environmental Laboratory, Inc.

Assistant Lab Director

Yes Were all samples received by the laboratory in a condition consistent with that described on the associated chain-of-custody document(s)?

For each analytical method referenced in this laboratory report package, were all specified QA/QC performance criteria followed, including the requirement to explain any criteria falling outside of acceptable guidelines, as specified in the CT DEEP method-specific Reasonable Confidence Protocol documents?

No

Were all QA/QC performance criteria specified in the Reasonable Confidence Protocol documents acheived? See Section: SVOA Narration.

For each analytical method referenced in this laboratory report package, were results reported for all constituents identified in the method-specific analyte lists presented in the Reasonable Confidence Protocol documents?

Wednesday, July 09, 2025Date:

Notes: For all questions to which the response was “No” (with the exception of question #7), additional information must be provided in an attached narrative. If the answer to question #1, #1A, or #1B is “No”, the data package does not meet the requirements for “Reasonable Confidence.” This form may not be altered, and all questions must be answered.

Authorized Signature:

Project No.

Phoenix Environmental Labs, Inc.

Laboratory Name

Project Location 3212220074A

Yes No

Yes No

Yes No

Laboratory Sample ID(s):Sampling Date(s) 6/27/2025

Were samples received at an appropriate temperature (≤6° C)?

3 Yes No

Yes No

Are project-specific matrix spikes and laboratory duplicates included in this data set for applicable RCPs?

7 Yes No

Printed Name:

Position:

LIST RCP METHODS USED (e.g., 8260,8270, etc.)

YesWere the method-specified preservation and holding time requirements met? No 1A

Was the VPH or EPH method conducted without significant modifications (see respective RCPs) 1B Yes No

NA

Were reporting limits / limits of quantitation specified or referenced on the chain-of-custody? 5 Yes No

NA

RCP QA/QC Certification Form

REASONABLE CONFIDENCE PROTOCOL

LABORATORY ANALYSIS QA/QC CERTIFICATION FORM

CT66302, CT66303

VPH and EPH methods only:

Name of Laboratory

This certification form is to be used for RCP methods only.

Bureau of Water Protection and Land Reuse Remediation Division

Version 2024 Page 1 of 1

If samples were received by the laboratory on the same day of collection and were stored and transported to the laboratory on ice, cooler temperatures above 6ºC are acceptable.

Were these reporting limits / limits of quantitation met? 5a

Client Name Tighe & Bond

6010, 7470/7471, 8082, 8260, 8270, ETPH

Greg Lawrence

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.

RCP Certification Report

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

Cyanide Narration Were all QA/QC performance criteria specified in the Reasonable Confidence Protocol documents achieved? Yes.

Instrument:

CT66303

LACHAT 07/02/25-1 James Floyd, Chemist 07/02/25

The samples were distilled in accordance with the method.

The initial calibration met criteria.

The calibration check standards (ICV,CCV) met criteria.

The initial and continuing calibration blanks (ICB,CCB) met criteria.

The method blank, laboratory control sample (LCS), and matrix spike (MS) were distilled with the samples.

QC (Batch Specific):

CT66303

Batch 791755 (CT60122)

All LCS recoveries were within 80 - 120 with the following exceptions: None.

Additional: MS acceptance range is 75-125%.

ETPH Narration Were all QA/QC performance criteria specified in the Reasonable Confidence Protocol documents achieved? Yes.

Instrument:

CT66303 (1X)

AU-FID1 07/07/25-1 Jeff Bucko, Chemist 07/07/25

The initial calibration (ET_513I) RSD for the compound list was less than 30% except for the following compounds: None.

As per section 7.2.3, a discrimination check standard was run (707A009_1) and contained the following outliers: None.

The continuing calibration %D for the compound list was less than 30% except for the following compounds:None.

QC (Batch Specific):

CT66303

Batch 792131 (CT67823)

All LCS recoveries were within 60 - 120 with the following exceptions: None.

All LCSD recoveries were within 60 - 120 with the following exceptions: None.

All LCS/LCSD RPDs were less than 30% with the following exceptions: None.

Additional surrogate criteria: LCS acceptance range is 60-120% MS acceptance range 50-150%. The ETPH/DRO LCS has been normalized based on the alkane calibration.

Mercury Narration Were all QA/QC performance criteria specified in the analytical method achieved? Yes.

Instrument:

CT66303

PSA 07/07/25 08:34 Zade-Anne Taylor, AJ Joslin, Chemist 07/07/25

Certification Report

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

Mercury Narration The initial calibration met criteria and the linear range is defined daily by the calibration range.

The Low-Level Calibration Verification (LLCV) met criteria.

The following Initial Calibration Verification (ICV) compounds did not meet criteria: None.

The following Initial Calibration Blank (ICB) compounds did not meet criteria: None.

The following Continuing Calibration Verification (CCV) compounds did not meet criteria: None.

The following Continuing Calibration Blank (CCB) compounds did not meet criteria: None.

QC (Batch Specific):

CT66303

Batch 792219 (CT66267)

All LCS recoveries were within 70 - 130 with the following exceptions: None.

All LCSD recoveries were within 70 - 130 with the following exceptions: None.

All LCS/LCSD RPDs were less than 30% with the following exceptions: None.

Additional Mercury Criteria: LCS acceptance range is 80-120% for aqueous and for soils the acceptance range is set by vendor limits. MS acceptance range is 75-125% for aqueous and 80-120% for soils.

ICP Metals Narration Were all QA/QC performance criteria specified in the analytical method achieved? Yes.

Instrument:

CT66303

ARCOS-3 07/02/25 12:01 Tina Hall, Chemist 07/02/25

TThe initial calibration met criteria and the linear range is defined daily by the calibration range.

The Low-Level Calibration Verification (LLCV) met criteria.

The following Initial Calibration Verification (ICV) compounds did not meet criteria: None.

The following Initial Calibration Blank (ICB) compounds did not meet criteria: None.

The following Spectral Interference Check compounds did not meet criteria: None.

The following Continuing Calibration Verification (CCV) compounds did not meet criteria: None.

The following Continuing Calibration Blank (CCB) compounds did not meet criteria: None.

QC (Batch Specific):

CT66303

Batch 791698 (CT66616)

All LCS recoveries were within 75 - 125 with the following exceptions: None.

All LCSD recoveries were within 75 - 125 with the following exceptions: None.

All LCS/LCSD RPDs were less than 30% with the following exceptions: None.

Additional Criteria: LCS acceptance range is 80-120% for aqueous and for soils the acceptance range is set by vendor limits. MS acceptance range 75-125%.

PCB Narration Were all QA/QC performance criteria specified in the Reasonable Confidence Protocol documents achieved? Yes.

Instrument:

AU-ECD29 07/08/25-1 Saadia Chudary, Chemist 07/08/25

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

PCB Narration

CT66302 (10X)

The initial calibration (PC0520AI) RSD for the compound list was less than 20% except for the following compounds: None.

The initial calibration (PC0520BI) RSD for the compound list was less than 20% except for the following compounds: None.

The continuing calibration %D for the compound list was less than 20% except for the following compounds:None.

QC (Batch Specific):

CT66302

Batch 792308 (CT66117)

All LCS recoveries were within 40 - 140 with the following exceptions: None.

All LCSD recoveries were within 40 - 140 with the following exceptions: None.

All LCS/LCSD RPDs were less than 30% with the following exceptions: None.

SVOA Narration Were all QA/QC performance criteria specified in the Reasonable Confidence Protocol documents achieved? No.

QC Batch 792201 (Samples: CT66303): -----

The LCS/LCSD RPD exceeds the method criteria for one analyte, but this analyte was not reported in the sample(s) so no variability is suspected. (Benzidine) Instrument:

CT66303 (1X)

CHEM19 07/07/25-1 Matt Richard, Chemist 07/07/25

For 8270 full list, the DDT breakdown and pentachlorophenol & benzidine peak tailing were evaluated in the DFTPP tune and were found to be in control.

For 8270 BN list, benzidine peak tailing was evaluated in the DFTPP tune and was found to be in control.

Initial Calibration Evaluation (CHEM19/19_SVFULL_0703):

100% of target compounds met criteria.

The following compounds had %RSDs >20%: None.

The following compounds did not meet recommended response factors: 2-Nitrophenol 0.070 (0.1), Hexachlorobenzene 0.097 (0.1)

Continuing Calibration Verification (CHEM19/0707_03-19_SVFULL_0703):

Internal standard areas were within 50 to 200% of the initial calibration with the following exceptions: None.

98% of target compounds met criteria.

The following compounds did not meet % deviation criteria: Aniline 26%H (20%), Dibenz(a,h)anthracene 22%H (20%) The following compounds did not meet maximum % deviations: None.

The following compounds did not meet recommended response factors: 2-Nitrophenol 0.069 (0.1)

QC (Batch Specific):

CT66303

Batch 792201 (CT65593)

All LCS recoveries were within 40 - 140 with the following exceptions: None.

All LCSD recoveries were within 40 - 140 with the following exceptions: None.

All LCS/LCSD RPDs were less than 30% with the following exceptions: Benzidine(59.7%)

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc.

SDG I.D.: GCT66302

SVOA Narration Additional 8270 criteria: 10% of compounds can be outside of acceptance criteria as long as recovery is at least 10%. (Acid surrogates acceptance range for aqueous samples: 15-110%, for soils 30-130%)

VOA Narration Were all QA/QC performance criteria specified in the Reasonable Confidence Protocol documents achieved? Yes.

Instrument:

CT66302 (1X, 50X)

CHEM26 07/02/25-1 Jane Li, Chemist 07/02/25

Initial Calibration Evaluation (CHEM26/VT-070125):

95% of target compounds met criteria.

The following compounds had %RSDs >20%: 1,2-Dibromo-3-chloropropane 28% (20%), Bromoform 23% (20%), trans-1,3- Dichloropropene 22% (20%), trans-1,4-dichloro-2-butene 37% (20%) The following compounds did not meet Table 4 recommended minimum response factors: 1,1,2-Trichloroethane 0.190 (0.2), Bromodichloromethane 0.252 (0.3), trans-1,3-Dichloropropene 0.248 (0.3)

Continuing Calibration Verification (CHEM26/0702_02-VT-070125):

Internal standard areas were within 50 to 200% of the initial calibration with the following exceptions: None.

100% of target compounds met criteria.

The following compounds did not meet % deviation criteria: None.

The following compounds did not meet maximum % deviations: None.

The following compounds did not meet Table 4 recommended minimum response factors: 1,1,2-Trichloroethane 0.192 (0.2), Bromodichloromethane 0.262 (0.3), trans-1,3-Dichloropropene 0.274 (0.3)

QC (Batch Specific):

CT66302(1X)

Batch 792039 (CT65685) CHEM26 7/2/2025-1

All LCS recoveries were within 70 - 130 with the following exceptions: None.

All LCSD recoveries were within 70 - 130 with the following exceptions: None.

All LCS/LCSD RPDs were less than 20% with the following exceptions: None.

Additional 8260 criteria: 10% of LCS/LCSD compounds can be outside of acceptance criteria as long as recovery is 40-160%.

CT66302(50X)

Batch 792039H (CT65685) CHEM26 7/2/2025-1

All LCS recoveries were within 70 - 130 with the following exceptions: None.

All LCSD recoveries were within 70 - 130 with the following exceptions: None.

All LCS/LCSD RPDs were less than 20% with the following exceptions: None.

Additional 8260 criteria: 10% of LCS/LCSD compounds can be outside of acceptance criteria as long as recovery is 40-160%.

Temperature Narration The samples were received at 2.6C with cooling initiated.

(Note acceptance criteria for relevant matrices is above freezing up to 6°C)

CT66300 - CT66301

Tuesday, July 22, 2025

Sample ID#s:

Attn: Harley Langford Tighe & Bond 213 Court St, Suite 1100 Middletown, CT 06457

SDG ID: GCT66300

Project ID: 3212220074A

Sincerely yours, Laboratory Director Phyllis Shiller

Enclosed are revised Analysis Report pages. Please replace and discard the original pages. The contents of this report cannot be discussed with anyone other than the client listed above without their written consent.

NELAC - #NY11301

CT Lab Registration #PH-0618 MA Lab Registration #M-CT007 ME Lab Registration #CT-007 NH Lab Registration #213693-A,B

NJ Lab Registration #CT-003 NY Lab Registration #11301 PA Lab Registration #68-03530 RI Lab Registration #63 VT Lab Registration #VT11301

This laboratory is in compliance with the NELAC requirements of procedures used except where indicated.

This report contains results for the parameters tested, under the sampling conditions described on the Chain Of Custody, as received by the laboratory. This report is incomplete unless all pages indicated in the pagination at the bottom of the page are included.

A scanned version of the COC form accompanies the analytical report and is an exact duplicate of the original.

All soils, solids and sludges are reported on a dry weight basis unless otherwise noted in the sample comments.

587 East Middle Turnpike, P.O. Box 370, Manchester, CT 06040

SDG Comments July 22, 2025

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc.

SDG I.D.: GCT66300

CT66300 - Client high level could not be analyzed. Methanol had leaked from vial Sample weight and dilution could not be determined. Phoenix prepared sample per method 5035.

Sample Id Cross Reference

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc.

SDG I.D.: GCT66300

Client Id Lab Id Matrix

Project ID: 3212220074A

Col Date

CS-1-GRAB CT66300 CONCRETE 06/27/25 11:05

CS-1-COMP CT66301 CONCRETE 06/27/25 11:00

Location Code:

Rush Request:

P.O.#:

Collected by:

Received by:

Analyzed by:

CONCRETE

TIGHE-DAS

5 Day 3212220074A

06/27/25

SR1

see "By" below

ZH

Laboratory Data

CS-1-GRAB

Phoenix ID: CT66300

07/01/25 11:05 16:10

Parameter Result

RL/

PQL Units Date/Time By Reference

FOR: Attn: Harley Langford Tighe & Bond 213 Court St, Suite 1100 Middletown, CT 06457

Analysis Report July 22, 2025

Date Time

SDG ID: GCT66300

Client ID:

Project ID: 3212220074A

Dilution

587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102

Environmental Laboratories, Inc.

97Percent Solid 07/01/25 cv SW846-%Solid%

CompletedField Extraction 06/27/25 SW5035A CompletedSoil Extraction for PCB 07/07/25 C/Z SW3546

Polychlorinated Biphenyls NDPCB-1016 340 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1221 340 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1232 340 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1242 340 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1248 340 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1254 340 07/08/25 SC SW8082Aug/Kg 10 400PCB-1260 340 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1262 340 07/08/25 SC SW8082Aug/Kg 10 NDPCB-1268 340 07/08/25 SC SW8082Aug/Kg 10

QA/QC Surrogates

72% DCBP 07/08/25 SC 30 - 150 %% 10

77% DCBP (Confirmation) 07/08/25 SC 30 - 150 %% 10

73% TCMX 07/08/25 SC 30 - 150 %% 10

76% TCMX (Confirmation) 07/08/25 SC 30 - 150 %% 10

Volatiles ND1,1,1,2-Tetrachloroethane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,1,1-Trichloroethane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,1,2,2-Tetrachloroethane 4.4 07/02/25 JLI SW8260Dug/Kg 1 ND1,1,2-Trichloroethane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,1-Dichloroethane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,1-Dichloroethene 7.3 07/02/25 JLI SW8260Dug/Kg 1

Ver 2

CS-1-GRAB

Phoenix I.D.: CT66300

Client ID:

3212220074AProject ID:

Parameter Result

RL/

PQL Units Date/Time ByDilution Reference

ND1,1-Dichloropropene 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,2,3-Trichlorobenzene 270 07/02/25 JLI SW8260Dug/Kg 50 ND1,2,3-Trichloropropane 270 07/02/25 JLI SW8260Dug/Kg 50 ND1,2,4-Trichlorobenzene 270 07/02/25 JLI SW8260Dug/Kg 50 ND1,2,4-Trimethylbenzene 270 07/02/25 JLI SW8260Dug/Kg 50 ND1,2-Dibromo-3-chloropropane 5.0 07/02/25 JLI SW8260Dug/Kg 1 ND1,2-Dibromoethane 0.73 07/02/25 JLI SW8260Dug/Kg 1 ND1,2-Dichlorobenzene 270 07/02/25 JLI SW8260Dug/Kg 50 ND1,2-Dichloroethane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,2-Dichloropropane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,3,5-Trimethylbenzene 270 07/02/25 JLI SW8260Dug/Kg 50 ND1,3-Dichlorobenzene 270 07/02/25 JLI SW8260Dug/Kg 50 ND1,3-Dichloropropane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND1,4-Dichlorobenzene 270 07/02/25 JLI SW8260Dug/Kg 50 ND2,2-Dichloropropane 7.3 07/02/25 JLI SW8260Dug/Kg 1 ND2-Chlorotoluene 270 07/02/25 JLI SW8260Dug/Kg 50 ND2-Hexanone 36 07/02/25 JLI SW8260Dug/Kg 1 ND2-Isopropyltoluene 270 07/02/25 JLI SW8260Dug/Kg 50 ND4-Chlorotoluene 270 07/02/25 JLI SW8260Dug/Kg 50 ND4-Methyl-2-pentanone 36 07/02/25 JLI SW8260Dug/Kg 1 NDAcetone 13000 07/02/25 JLI SW8260Dug/Kg 50 NDAcrylonitrile 7.3 07/02/25…