00300 – GEOTECHNICAL DATA

ATTACHMENTS

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SUBSURFACE EXPLORATION PLAN

198 RIVER STREET

NEW HAVEN, CONNECTICUT

SCALE:

DATE:

FIGURE: SERVICES P ROVIDED IN NEW YORK BY T&B E NGINEERING, P.C.

3/5/24

1" = 40'

GENERAL NOTES:

1. BASE MAP IS BASED ON A PLAN TITLED

"SITE GRADING PLAN" DATED JANUARY 59,

2024 AND PREPARED BY TIGHE & BOND.

2. TIGHE & BOND TEST PITS WERE LOCATED IN

THE FIELD BY TAPING FROM IDENTIFIABLE

SITE FEATURES. LOCATIONS SHOULD BE

CONSIDERED APPROXIMATE.

3. WELTI BORINGS WERE LOCATED BY

OVERLAYING A PLAN TITLED "TEST BORING

LOCATIONS CLARENCE WELTI ASSOCIATES

INC." DATED JUNE 17, 2022 ON THE

ABOVE-REFERENCED "SITE GRADING PLAN."

LOCATIONS SHOULD BE CONSIDERED

APPROXIMATE.

4. TEST PITS WERE EXCAVATED BY RED

TECHNOLOGIES ON FEBRUARY 1, 2024.

5. BORINGS WERE DRILLED BY CLARENCE

WELTI ASSOCIATES INC. ON JUNE 17, 2022.

0' 20' 40' 80'

GRAPHIC SCALE

APPROX. WELTI BORING LOCATION

LEGEND

TB-1

N

B-1 B-2

TP-1

TP-3

TP-5

TP-2

TP-4

TP-1 APPROX. T&B TEST PIT LOCATION

Test Pit No.

Page No.

File No.

Checked By:

T&B Rep. Contractor Date

Operator Ground Elev.

Weather Make Volvo Model Time Started

Capacity 1/4 CY Reach 12 ft. Time Completed

Depth Soil Description Sample PID Boulder

No. Reading Excav. Count/ Note

(ppm) Effort Class No.

Notes:

Test Pit Plan

4'

Volume = cu. yd. 6 ft

J:\B\B5170 Bigelow Square LLC\001\Geotechnical\Report\[B5170-001 Test Pit Log.xls]TP-1

Drew Palmerie

ECR88

A

A

A

4.8-8.5': Brown, fine to coarse SAND and fine to coarse GRAVEL, little Silt, occasional Boulders, wet

End of Test Pit - 8.5 feet. Pit terminated due to groundwater / pit collapse.

(FILL)

1.3-4.8': Brown, fine to coarse SAND and fine to coarse GRAVEL, little Silt, occasional miscellaneous debris (Brick,Concrete [boulder sized]), moist

Clear, 40s

Red Technologies 03/01/24

7 ft

E

Project/Site Information

E

E

TP-1

B5170-001

B. Nereson

198 RIVER STREET

NEW HAVEN, CT

E

E

E

E

0-1.3': CONCRETE

(CONCRETE)

Casey Watts

8'

~10

E

E

(NATIVE)

Excavation Effort E-----Easy M-----Moderate

D-----Difficult

Boulder Class Letter Size Range

Designation Classification A 6" - 17" B 18" - 36" C 36" +

1'

2'

3'

4'

5'

6'

7'

8'

9'

10'

11'

12'

13'

14'

15'

16'

TRACE (TR.)

LITTLE (LI.)

SOME (SO.)

AND

0 - 10%

10 - 20%

20 - 35%

35 - 50%

Abbreviations F = Fine M = Medium C = Coarse V = Very F/M = Fine to medium

F/C = Fine to coarse GR = Gray BN = Brown YEL = Yellow

GROUNDWATER

Elapsed Time to Reading (Hours)

( X ) Encountered ( ) Not Encountered

Depth to Ground-water

Proportions

Used

Volume = cu. yd. 5 ft

J:\B\B5170 Bigelow Square LLC\001\Geotechnical\Report\[B5170-001 Test Pit Log.xls]TP-2

Project/Site Information

TP-2

198 RIVER STREET 1 of 1

NEW HAVEN, CT B5170-001

B. Nereson

Casey Watts Red Technologies 03/01/24

Drew Palmerie 8 ft

Clear, 40s ECR88 1025

0-0.8': CONCRETE

E

(CONCRETE)

E

E

(FILL)

E

E

E

E

(NATIVE)

E

1-5': Brown, fine to coarse SAND and fine to coarse GRAVEL, frequent Brick, frequent miscellaneous debris (brick, concrete, pipe, ceramic), petroleum-like odor, moist

8'

~10.6

End of Test Pit - 9 feet. Pit terminated due to groundwater / pit collapse.

5-9': Brown, fine to medium SAND, some fine to coarse Gravel, trace Silt, wet

Excavation Effort E-----Easy M-----Moderate

D-----Difficult

Boulder Class Letter Size Range

Designation Classification A 6" - 17" B 18" - 36" C 36" +

1'

2'

3'

4'

5'

6'

7'

8'

9'

10'

11'

12'

13'

14'

15'

16'

TRACE (TR.)

LITTLE (LI.)

SOME (SO.)

AND

0 - 10%

10 - 20%

20 - 35%

35 - 50%

Abbreviations F = Fine M = Medium C = Coarse V = Very F/M = Fine to medium

F/C = Fine to coarse GR = Gray BN = Brown YEL = Yellow

GROUNDWATER

Elapsed Time to Reading (Hours)

( X ) Encountered ( ) Not Encountered

Depth to Ground-water

Volume = cu. yd. 4.5 ft

J:\B\B5170 Bigelow Square LLC\001\Geotechnical\Report\[B5170-001 Test Pit Log.xls]TP-3

Project/Site Information

TP-3

198 RIVER STREET 1 of 1

NEW HAVEN, CT B5170-001

B. Nereson

Casey Watts Red Technologies 03/01/24

Drew Palmerie 5.5 ft

Clear, 40s ECR88 835

0-0.3': CONCRETE

E

E

E

E

(FILL)

E

E

E

E

(NATIVE)

(NATIVE)

E

E

8'

~11.9

0.3-4.5': Brown, fine to medium SAND, little Silt, trace fine to coarse Gravel, occasional miscellaneous debris (Brick, Ceramic), moist

4.5-8.5': Brown, fine to coarse SAND and fine to coarse GRAVEL, little Silt, occasional Boulders, wet

8.5-10': Dark brown, fine to medium SAND, some Silt, little fine Gravel, occasional Shells, wet

End of Test Pit - 10 feet. Pit terminated due to groundwater / pit collapse.

Excavation Effort E-----Easy M-----Moderate

D-----Difficult

Boulder Class Letter Size Range

Designation Classification A 6" - 17" B 18" - 36" C 36" +

1'

2'

3'

4'

5'

6'

7'

8'

9'

10'

11'

12'

13'

14'

15'

16'

TRACE (TR.)

LITTLE (LI.)

SOME (SO.)

AND

0 - 10%

10 - 20%

20 - 35%

35 - 50%

Abbreviations F = Fine M = Medium C = Coarse V = Very F/M = Fine to medium

F/C = Fine to coarse GR = Gray BN = Brown YEL = Yellow

GROUNDWATER

Elapsed Time to Reading (Hours)

( X ) Encountered ( ) Not Encountered

Depth to Ground-water

Volume = cu. yd. 8 ft

J:\B\B5170 Bigelow Square LLC\001\Geotechnical\Report\[B5170-001 Test Pit Log.xls]TP-4

Project/Site Information

TP-4

198 RIVER STREET 1 of 1

NEW HAVEN, CT B5170-001

B. Nereson

Casey Watts Red Technologies 03/01/24

Drew Palmerie 9 ft

Clear, 40s ECR88 1100

0-0.8': CONCRETE

E

(CONCRETE)

E

E

0.8-9': Brown, fine to coarse SAND and fine to coarse GRAVEL, little Silt, frequent miscellaneous debris (Concrete, mass Brick [apparent buried foundation wall], Ash), moist

E

E

E

(FILL)

(NATIVE)

E

E

8'

~13

End of Test Pit - 11 feet. Pit terminated due to groundwater / pit collapse.

9-11': Brown, fine to medium SAND, some Silt, wet

Excavation Effort E-----Easy M-----Moderate

D-----Difficult

Boulder Class Letter Size Range

Designation Classification A 6" - 17" B 18" - 36" C 36" +

1'

2'

3'

4'

5'

6'

7'

8'

9'

10'

11'

12'

13'

14'

15'

16'

TRACE (TR.)

LITTLE (LI.)

SOME (SO.)

AND

0 - 10%

10 - 20%

20 - 35%

35 - 50%

Abbreviations F = Fine M = Medium C = Coarse V = Very F/M = Fine to medium

F/C = Fine to coarse GR = Gray BN = Brown YEL = Yellow

GROUNDWATER

Elapsed Time to Reading (Hours)

( X ) Encountered ( ) Not Encountered

Depth to Ground-water occasional Roots, wet (NATIVE)

Volume = cu. yd. 5 ft

J:\B\B5170 Bigelow Square LLC\001\Geotechnical\Report\[B5170-001 Test Pit Log.xls]TP-5

Project/Site Information

TP-5

198 RIVER STREET 1 of 1

NEW HAVEN, CT B5170-001

B. Nereson

Casey Watts Red Technologies 03/01/24

Drew Palmerie 6 ft

Clear, 40s ECR88 940

0-0.5': CONCRETE

E

E

E

(FILL)

E

E

E

E

E

(NATIVE)

8-8.5': Dark brown, fine to medium SAND, some Silt, 8'

End of Test Pit - 8.5 feet. Pit terminated due to groundwater / pit collapse.

0.5-5': Brown, fine to coarse SAND and fine to coarse GRAVEL, little Silt, occasional miscellaneous debris (Ash, Slag, Brick), moist

5-8': Brown, fine to medium SAND, little fine to coarse GRAVEL, little Silt, wet

Excavation Effort E-----Easy M-----Moderate

D-----Difficult

Boulder Class Letter Size Range

Designation Classification A 6" - 17" B 18" - 36" C 36" +

1'

2'

3'

4'

5'

6'

7'

8'

9'

10'

11'

12'

13'

14'

15'

16'

TRACE (TR.)

LITTLE (LI.)

SOME (SO.)

AND

0 - 10%

10 - 20%

20 - 35%

35 - 50%

Abbreviations F = Fine M = Medium C = Coarse V = Very F/M = Fine to medium

F/C = Fine to coarse GR = Gray BN = Brown YEL = Yellow

GROUNDWATER

Elapsed Time to Reading (Hours)

( X ) Encountered ( ) Not Encountered

Depth to Ground-water

5-9-4-2

4-4-4-20

29-30-27-25

4-5-7

4-6-6

3-3-6

3-5-9

4-8-7

1.0'-3.0'

3.0'-5.0'

5.0'-7.0'

10.0'-11.5'

15.0'-16.5'

20.0'-21.5'

25.0'-26.5'

30.0'-31.5'

CONCRETE

BR./BLACK FINE-CRS.SAND, LITTLE TO SOME SILT, TRACE

BRICK FRAGMENTS, COAL ASH & CINDERS - FILL

BR.FINE-CRS.SAND, LITTLE GRAVEL, TRACE SILT

BR.FINE SAND, LITTLE TO SOME SILT

BR.FINE-CRS.SAND, SOME SILT, LITTLE GRAVEL

0.50

5.0

8.0

33.0

CLIENT

CITY OF NEW HAVEN, CT

PROJECT NAME

PROPOSED BUILDING

CLARENCE WELTI ASSOC., INC.

P.O. BOX 397

LOCATION

198 RIVER STREET, NREW HAVEN, CT

GLASTONBURY, CONN 06033

AUGER CASING SAMPLER CORE BAR. OFFSET SURFACE ELEV.

HOLE NO. B-1

TYPE HSA SS LINE & STA.

GROUND WATER OBSERVATIONS START

DATE 6/17/22

SIZE I.D. 3.75" 1.375"

N. COORDINATE AT 3.5 FT. AFTER 0 HOURS

HAMMER WT. 140lbs FINISH

DATE 6/17/22E. COORDINATE

AT FT. AFTER HOURS

HAMMER FALL 30"

LEGEND: COL. A:

DRILLER: T. CZMYR

SAMPLE TYPE: D=DRY A=AUGER C=CORE U=UNDISTURBED PISTON S=SPLIT SPOON

INSPECTOR:

SHEET 1 OF HOLE NO. B-1PROPORTIONS USED: TRACE=0-10% LITTLE=10-20% SOME=20-35% AND=35-50%

DEPTH

NO.

SAMPLE

BLOWS/6" DEPTH

A

STRATUM DESCRIPTION

+ REMARKS

ELEV.

9 100 35.0'-35.4'

BOTTOM OF BORING @ 35.5' (AUGER REFUSAL)

35.5

CLIENT

CITY OF NEW HAVEN, CT

PROJECT NAME

PROPOSED BUILDING

CLARENCE WELTI ASSOC., INC.

P.O. BOX 397

LOCATION

198 RIVER STREET, NREW HAVEN, CT

GLASTONBURY, CONN 06033

LEGEND: COL. A:

DRILLER: T. CZMYR

SAMPLE TYPE: D=DRY A=AUGER C=CORE U=UNDISTURBED PISTON S=SPLIT SPOON

INSPECTOR:

SHEET 2 OF HOLE NO. B-1PROPORTIONS USED: TRACE=0-10% LITTLE=10-20% SOME=20-35% AND=35-50%

DEPTH

NO.

SAMPLE

BLOWS/6" DEPTH

A

STRATUM DESCRIPTION

+ REMARKS

4-6-7-2

2-1-2-8

6-8-12-17

3-3-4

4-4-5

3-4-8

3-6-6

4-7-12

1.0'-3.0'

3.0'-5.0'

5.0'-7.0'

10.0'-11.5'

15.0'-16.5'

20.0'-21.5'

25.0'-26.5'

30.0'-31.5'

CONCRETE

BLACK COAL ASH AND CINDERS, LITTLE FINE-CRS.SAND,

TRACE CONCRETE & GRAVEL - FILL

BR.FINE-CRS.SAND, LITTLE GRAVEL, TRACE TO LITTLE SILT

BR.FINE SAND, LITTLE TO SOME SILT

BR.FINE SAND AND SILT

BR.FINE-CRS.SAND, SOME SILT, LITTLE GRAVEL

0.50

4.5

8.0

20.0

33.0

CLIENT

CITY OF NEW HAVEN, CT

PROJECT NAME

PROPOSED BUILDING

CLARENCE WELTI ASSOC., INC.

P.O. BOX 397

LOCATION

198 RIVER STREET, NREW HAVEN, CT

GLASTONBURY, CONN 06033

AUGER CASING SAMPLER CORE BAR. OFFSET SURFACE ELEV.

HOLE NO. B-2

TYPE HSA SS LINE & STA.

GROUND WATER OBSERVATIONS START

DATE 6/17/22

SIZE I.D. 3.75" 1.375"

N. COORDINATE AT 4.0 FT. AFTER 0 HOURS

HAMMER WT. 140lbs FINISH

DATE 6/17/22E. COORDINATE

AT FT. AFTER HOURS

HAMMER FALL 30"

LEGEND: COL. A:

DRILLER: T. CZMYR

SAMPLE TYPE: D=DRY A=AUGER C=CORE U=UNDISTURBED PISTON S=SPLIT SPOON

INSPECTOR:

SHEET 1 OF HOLE NO. B-2PROPORTIONS USED: TRACE=0-10% LITTLE=10-20% SOME=20-35% AND=35-50%

DEPTH

NO.

SAMPLE

BLOWS/6" DEPTH

A

STRATUM DESCRIPTION

+ REMARKS

9 100 35.0'-35.4' BOTTOM OF BORING @ 35.4' (AUGER REFUSAL)

35.4

CLIENT

CITY OF NEW HAVEN, CT

PROJECT NAME

PROPOSED BUILDING

CLARENCE WELTI ASSOC., INC.

P.O. BOX 397

LOCATION

198 RIVER STREET, NREW HAVEN, CT

GLASTONBURY, CONN 06033

LEGEND: COL. A:

DRILLER: T. CZMYR

SAMPLE TYPE: D=DRY A=AUGER C=CORE U=UNDISTURBED PISTON S=SPLIT SPOON

INSPECTOR:

SHEET 2 OF HOLE NO. B-2PROPORTIONS USED: TRACE=0-10% LITTLE=10-20% SOME=20-35% AND=35-50%

DEPTH

NO.

SAMPLE

BLOWS/6" DEPTH

A

STRATUM DESCRIPTION

+ REMARKS

As Rcvd

Moisture

Content

LL

PL

OD

LL

Gravel

Sand

Fines

Org.

pH gd

MAX (pcf)

Wopt gd

MAX (pcf)

Wopt (%)

(Corr.)

Dry unit wt.

(pcf)

Test

Moisture

Content %

Target

Test Setup as % of

Proctor

CBR

0.1"

CBR

0.2"

Permeability cm/sec

D2216 D2974 D4792

Test Pit TP2 5-9 24-S-B519 30.9 68.9 0.2 Brown poorly graded sand with gravel

Test Pit TP3 8.5-10 24-S-B520 30.3 3.5 Organic Content Only

Test Pit TP5 8-8.5 24-S-B521 27.2 2.8 Organic Content Only

Date Reviewed: 03.14.24

Organic Content tested by AF from 3.11.24 to 3.13.24

Project Information:

Cranston RI, 02910 Tighe & Bond

Fax: (401)-467-2398

198 River St New Haven CT

Project Manager: Brian Nereson New Haven, CT

Project Number: B5107 Summary Page:

Report Date:

03.13.24

Phone: (401)-467-6454 Portsmouth, NH

195 Frances Avenue Client Information:

Let's Build a Solid Foundation cts.thielsch.com Assigned By:

Collected By:

Brian Nereson

C. Watts

Reviewed By:03.08.24

Depth

(ft)

LABORATORY TESTING DATA SHEET, Report No.: 7424-C-B017

Identification Tests Proctor / CBR / Permeability Tests

Date Received:

Laboratory

No.

Material

Source

Laboratory Log and

Soil Description

D6913

Sample

ID

D4318 D1557

This report only relates to items inspect and/or tested. No warranty, expressed or implied, is made.

This report shall not be reproduced, except in full, without prior written approval from the Agency, as defined in ASTM E329.

http://www.thielsch.com/ http://www.thielsch.com/ http://www.thielsch.com/ http://www.thielsch.com/ http://www.thielsch.com/ http://www.thielsch.com/ http://www.thielsch.com/

Th es e re su lt s ar e fo r th e ex cl u si ve u se o f th e cl ie n t fo r w h o m t h ey w er e o b ta in ed . T h is r ep o rt o n ly r el at es t o it em s in sp ec t an d

/o r te st ed . N o w ar ra n ty

, e xp re ss ed o r im p lie d , i s m ad e.

Tested By: AF Checked By: Andrew Flanagan

Particle Size Distribution Report

PE

R C

EN

T

FI

N

ER

GRAIN SIZE - mm.

0.0010.010.1110100

% +3" Coarse

% Gravel

Fine Coarse Medium

% Sand

Fine Silt

% Fines

Clay

0.0 8.4 22.5 15.0 17.5 36.4 0.2 in in in

½ in in

¾ in

½ in

3/ in

#4 #1

#2

#3

#4

#6

#1

#1

#2

SIEVE SIZE PERCENT SPEC.* PASS?

OR DIAMETER FINER PERCENT (X=NO)

Soil Description

Atterberg Limits

Coefficients

Classification

Remarks

Source of Sample: Test Pit Depth: 5-9' Sample Number: TP2 Date:

Client:

Project:

Project No: Figure

Brown poorly graded sand with gravel 1 1/2"

1" 3/4" 1/2" 3/8" #4

#10 #20 #40 #60

#100 #200

100.0 95.8 91.6 85.0 79.5 69.1 54.1 44.9 36.6 21.1

4.7 0.2

NP NV NP

17.1686 12.6738 2.8617

1.4156 0.3312 0.2098

0.1825 15.68 0.21

SP A-1-b

Tighe & Bond

198 River St New Haven CT New Haven, CT

B5107

PL= LL= PI=

D90= D85= D60= D50= D30= D15= D10= Cu= Cc=

USCS= AASHTO=

* (no specification provided)

03.13.24

24-S-B519

Thielsch Engineering Inc.

Cranston, RI