Geotechnical Report 3.28.17 with updated lab results.pdf

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GEOTECHNICAL | CONSTRUCT ION | ENVIRONMENTAL

ENGI NEERS and SCI ENT I STS

March 28, 2017 File No. 3959-001.00

Chris Flanagan Municpal Civil Engineer City of New Haven 200 Orange Street New Haven, Connecticut 06510

Via email: CFlanagan@newhavenct.gov

Re: Geotechnical Engineering Report Ralph Walker Ice Rink Renovation New Haven, Connecticut

Dear Mr. Flanagan:

GeoDesign, Inc. (GeoDesign) is pleased to submit this geotechnical engineering report for the Ralph Walker Ice Rink Renovation Project located at 1080 State Street in New Haven, Connecticut. Refer to Figure 1 (in Appendix 1) for the approximate site location. This report includes subsurface exploration data and geotechnical recommendations for the project.

PURPOSE AND SCOPE

GeoDesign completed a subsurface exploration program and geotechnical engineering evaluation for the proposed renovations. Our geotechnical engineering services included: characterizing subsurface conditions within the footprint of the renovations, performing geotechnical engineering analyses, and providing geotechnical design and construction recommendations for the project.

Our services were provided in accordance with our February 9, 2017 (Revised February 15, 2017) proposal, which was based, in part, on a sketch provided by your structural engineer (Spiegel Zamecnik and Shah, Inc.) that showed the existing ice rink building and proposed renovation limits.

Our recommendations are based on allowable stress design, the 2012 International Building Code with 2016 Connecticut Supplements (Building Code), and American Society for Testing and Materials (ASTM) Standards.

BACKGROUND

The Ralph Walker Ice Rink is a single story steel structure that was constructed in the early 1970s.

The rink was closed this past winter for renovations that include expanding the building and ice

Ralph Walker Ice Rink Renovation New Haven, Connecticut

File No. 3959-001.00 – March 28, 2017 Page No. 2

2 2 4 W E S T 3 5 T H S T R E E T • N E W Y O R K , N E W Y O R K 1 0 0 0 1 • T E L E P H O N E : 2 1 2 . 2 2 1 . 6 6 5 1 • F A C S I M I L E : 2 1 2 . 2 2 1 . 6 7 9 9 floor slab one bay to the north. Refer to Figure 2 (in Appendix 1) for the existing building location and proposed renovation limits.

The original design drawings indicate that the building is supported on deep foundations (e.g.

piles), but the pile type, size, capacity, and bearing level are not known. The drawings did not indicate what the slab is bearing on, but it is suspected by the owner and structural engineer that it is a normal slab-on-grade (i.e. not pile supported). It is our understanding that the building and slab are not showing signs of distress (e.g. cracking, settlement, etc.) and have performed well throughout their design life. We recommend that the existing slab construction be confirmed.

Site grades are generally flat throughout the site and locally slope down up to 10 feet in the area of the proposed renovations. It is our understanding that the site grades will remain relatively unchanged after construction for the majority of the site and that there will be no net increase in surface loading in areas with grade changes.

TEST BORINGS

We observed and logged five test borings (B-1 and B-5) drilled by our subcontractor Site, LLC from February 28 to March 3, 2017. The borings were drilled to explore the soil and groundwater conditions in the project area. The test boring ground surface elevations were not known at the time of drilling. Borings were located in the field by taping/pacing from existing site features, thus, their locations should be considered approximate. Boring locations are depicted on Figure 2 (Appendix 1) and the logs are included in Appendix 2.

Hollow-stem auger and drive and wash drilling methods were used to advance borings to depths of approximately 52 to 102 feet below existing grades. Representative soil samples were obtained for soil classification and laboratory testing by split barrel sampling procedures in general accordance with ASTM D-1586. The split-spoon sampling procedure utilizes a standard 2-inch O.D. split-barrel sampler that is driven into the bottom of the boring with a 140-pound hammer falling a distance of 30 inches. The number of blows required to advance the sampler the middle 12-inches of a normal 24-inch penetration is recorded as the Standard Penetration Resistance Value (N). The blows (i.e. “N-Value”) are indicated on the boring logs at their depth of occurrence and provide an indication of the relative consistency of the material.

Groundwater levels were measured using a weighted tape in the open drill holes.

LABORATORY TESTING

Representative samples from the borings were selected for the following index tests:

• Moisture Content Tests (ASTM D2216)

• Organic Matter Tests (ASTM D2974)

• Atterberg Limits (ASTM D4318)

File No. 3959-001.00 – March 28, 2017 Page No. 3

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The test results are included in Appendix 3.

SUBSURFACE CONDITIONS

General Geology

We consulted published surficial and bedrock geological (1:125,000 scale, Surficial Materials Map of Connecticut, Janet Radway Stone, 1992 and Bedrock Geological Map of Connecticut, John Rodgers, 1985) to obtain information on the regional geology in the area of the proposed wall.

The surficial material is mapped as Artificial Fill over Sand. There is also Marsh Deposits overlying Fines mapped nearby. The bedrock is mapped as Arkose.

Subsurface Profile

The generalized site subsurface profile, as inferred from the test boring data, is summarized as follows in order of increasing depth:

• Fill – 10 to 15.5 feet (14 feet on average) thick; over

• Marsh Deposits over Fines – 14 to 17.5 feet (15.5 feet on average) thick; over

• Sand – Greater than 102 feet deep

Bedrock was not encountered within the explored depths.

The Fill generally consisted of loose to medium dense, brown/black, fine to coarse sand with varying amounts of silt and gravel. Trace (0 to 10%) amounts of cinders, wood, glass, brick, and other debris materials were also observed in the Fill. Some samples obtained from the Fill Stratum had a petroleum odor.

The Marsh Deposits over Fines generally consist of very soft to soft, gray, organic clay and silt with layers of peat. Trace to little amounts of fine sand, organic fibers, and shells were also observed in this deposit. The moisture content of tested organic silt and clay samples ranged from about 46 to 92% with a plasticity index of 18% and organic content of about 3%. The moisture content of a peat sample was about 239% with a plasticity index of 107% and organic content of about 57%.

All the borings were terminated in the Sand Deposit. This material generally consisted of medium dense, red/brown, fine to medium sand varying amounts of silt. The upper 3.5 to 6.5 feet of this stratum had little to and (15 to 45%) amounts of fine to coarse gravel.

Groundwater was encountered about 6 to 13 feet below existing site grades. Groundwater levels will vary depending on factors such as temperature, season, precipitation, construction activity, and other conditions, which may be different from those at the time of these measurements.

File No. 3959-001.00 – March 28, 2017 Page No. 4

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GEOTECHNICAL ENGINEERING RECOMMENDATIONS

We offer the following geotechnical design recommendations based on the subsurface conditions encountered at the site, available project information, and the proposed construction.

Foundation Type and Bearing Strata

We recommend that the proposed building foundations be supported on drilled micropiles bearing in natural competent sands below the Fill and soft Marsh Deposits. Micropiles have advantages over conventional driven piles or drilled shafts for this project. The specific advantages are as follows:

• The drilling and grouting equipment used for micropile installation is relatively small and lightweight and can be mobilized within the tight site area and adjacent to existing building (if needed).

• Proper drilling and grouting procedures associated with micropile installation controls risk of damage to the existing foundations and utilities versus driven piles as vibrations, soil displacements, and pile drifting are minimized.

• Micropiles can be installed through the Fill (possible obstructions) without damaging the integrity of the piles. Micropiles can also be installed with tight tolerances to avoid hitting the existing foundations and utilities.

Micropiles should be a minimum of 6-inches in diameter and develop their capacity in side friction in the Sand Deposit. Micropiles should be constructed with permanent steel casing that extends through the Fill and Marsh over Fines Deposits to maintain the borehole integrity during construction; thus managing potential for hole collapsing, squeezing of weak soils, and/or loss of ground. A center reinforcing bar and/or inner casing that extends the full length of the micropile should be used. The minimum spacing of micropiles should be at least 24 inches or three diameters measured center to center (whichever one is greater).

The micropile locations will have to be carefully coordinated with the existing building foundations and utilities such that they do not interfere with one another.

Pile Capacity

We recommend an allowable micropile grout to sand bond capacity of 7.5 psi. This bond capacity assumes an ultimate bond capacity of 15 psi, safety factor of two, and that a successful static load test is performed in accordance with ASTM 3689-07.

File No. 3959-001.00 – March 28, 2017 Page No. 5

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Lateral pile capacity estimates require a lateral soil-structural interaction analysis be performed.

This can be performed during final design after the pile geometry (e.g. diameter, reinforcing, etc.)

is selected and structural loads are known.

Downdrag

We anticipate there will be downdrag loads (also referred to as negative skin friction) on the piles from the Fill and Marsh Deposit settling over time. We recommend that the pile designer estimate and appropriately consider these loads with the other design loads (e.g., live load).

Downdrag loads are additive to dead loads, but not to live loads (or transient loading). Live loads cause temporary deformation and downward movement of piles relative to the soil, which reduces or eliminates drag loads during live loading. Each loading case should be reviewed by the structural engineer to determine how to apply downdrag loads during final design. Alternately, the entire downdrag load may be conservatively applied to the design.

Slab

We recommend using a structural slab supported by piles and grade beams for the proposed new building slab. This will prevent loading on the existing foundations and avoid effects (i.e. slab cracking and deformations) of potential settlement of the Fill and Marsh Deposits.

The slab could also be placed over lightweight fill (e.g. geofoam) and constructed such that there will be no net increase in load on the Fill and compressible Marsh Deposits (i.e. slab-on-grade).

The Marsh Deposits could still settle due to creep (compression of the bonds between individual soil particles at a constant stress) and as organic material decomposes. The Fill could also settle if it contains organic material or voids. This could require periodic slab resurfacing and repair.

We recommend doing a structural survey of the existing slab to better understand its construction and performance. If the slab is deemed to be a slab-on-grade and has performed satisfactory over the past 45 years or so, then it is likely a new slab-on-grade will perform in a similar fashion if there is no net increase in loading.

Seismic Design

The average Standard Penetration Test “N” value over a 100-foot depth below the building is between 15 and 50. Thus, the site class for the proposed structure is “D” (Stiff Soil Profile) per the

IBC.

Based on the standard penetration test results, visual soil classifications, and design peak ground acceleration at this locale, the site soils are not susceptible to liquefaction.

File No. 3959-001.00 – March 28, 2017 Page No. 6

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REVIEW OF FINAL DESIGN, PLANS, AND SPECIFICATIONS

When project plans and specifications are available they should be provided to GeoDesign for review of conformance with our geotechnical recommendations. If changes are made to the location or type of the proposed renovations, the recommendations provided in this report will need to be verified in writing for applicability.

CONSTRUCTION OBSERVATION

The Building Code mandates that pile installation and load testing be observed and documented by a qualified person. We recommend that GeoDesign be retained during construction to observe and document these operations.

LIMITATIONS

This report is subject to the limitations attached in Appendix 4.

Thank you for the opportunity to assist you with this project. If you have any questions, please feel free to call the undersigned at 203-758-8836.

Daniel F. LaMesa, P.E. Theodore von Rosenvinge, P.E.

Assocate Senor Principal

Attachments: Appendix 1 – Figures

Appendix 2 – Boring Log Appendix 3 – Lab Results Appendix 4 – Limitations

APPENDIX 1

FIGURES

• Figure 1 - Locus Plan

• Figure 2 - Boring Location Plan

APPENDIX 2

BORING LOGS

• Test Boring B-1

• Test Boring B-2

• Test Boring B-3

• Test Boring B-4

• Test Boring B-5

Topsoil Fill

Organic Clay and Silt

Sand and Organic Clayey Silt

Gravelly Sand

Silty Sand

10.0

21.0

25.0

28.5

10.0

21.0

25.0

28.5

Medium dense, red-brown fine to coarse SAND, some fine to coarse Gravel, little Silt, trace Brick, trace Building Material

Medium dense, brown-gray-black CINDERS and ASH, little fine to coarse Sand, trace fine Gravel, trace Silt

Loose, brown-black fine to coarse SAND, little fine Gravel, trace Silt, trace Brick, trace Glass, petroleum odor

Soft, gray Organic CLAY & SILT, trace Organic Fibers

Very soft, dark gray Organic CLAY & SILT, little fine Sand, trace(-) Organic Fibers

Very loose, gray fine to medium SAND, some Organic Clayey Silt

Medium dense, gray fine to coarse SAND, some fine to coarse Gravel, trace Silt

B O

R

IN

G L

O G

M C

8-

-0

.0

B O

R

IN

G L

O G

S B

-1 T

O B

-5 .G

P J

G E

O D

E S

IG

N

S T

A N

D A

R D

.G D

T

/1

/1

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

February 28, 2017 2/28/17

Sample Description

18 - 24

Strata Description

4.0 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-1

B-1 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.30 in.

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

6.0

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In hole after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

140 lbs

Automatic - Hydraulic

CME 75 Truck Rig

FJ

February 28, 2017

Site LLC

WOH

SS

SS

SS

SS

SS

SS

SS

WOH

WOH

WOH

WOH

0.0

2.0

5.0

10.0

15.0

20.0

25.0

Silty Sand (Continued)

Sand 49.049.0

Medium dense, red-brown fine SAND, little Silt

Dense, no recovery

Medium dense, red-brown fine SAND and SILT

Medium dense, red-brown fine to coarse SAND, trace Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

February 28, 2017 2/28/17

Sample Description

18 - 24

Strata Description

4.0 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-1

B-1 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.30 in.

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

6.0

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In hole after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

140 lbs

Automatic - Hydraulic

CME 75 Truck Rig

FJ

February 28, 2017

Site LLC

SS

SS

SS

SS

30.0

35.0

40.0

50.0

Sand (Continued)

Gravelly Sand

Bottom of Exploration at 72.0 ft

68.0

72.0

68.0

72.0

Medium dense, red-brown medium to coarse SAND, trace Silt

Medium dense, red-brown fine to medium SAND, some fine to coarse Gravel, trace Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

February 28, 2017 2/28/17

Sample Description

18 - 24

Strata Description

4.0 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-1

B-1 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.30 in.

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

6.0

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In hole after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

140 lbs

Automatic - Hydraulic

CME 75 Truck Rig

FJ

February 28, 2017

Site LLC

SS

SS

60.0

70.0

Peat

Organic Clay and Silt

14.0

29.0

14.0

16.0

29.0

Loose, dark brown fine to medium SAND, little Silt, little Organic Fibers

Medium dense, dark brown fine to medium SAND, little Silt, trace Organic Fibers

Medium dense, brown-black fine to coarse GRAVEL and fine to coarse SAND, trace Silt, strong petroleum odor

Loose, brown-black fine to medium SAND and fine to coarse GRAVEL, trace concrete, trace Ash/Cinders, trace Wood, petroleum odor

Very soft; Top 7": PEAT Bottom 11": gray Organic CLAY and SILT, little Organic Fibers

Very soft, dark gray Organic CLAY and SILT, little fine Sand, trace Organic Fibers, trace Shell fragments

Soft, gray Organic CLAY and SILT, little fine Sand

B O

R

IN

G L

O G

M C

8-

-0

.0

B O

R

IN

G L

O G

S B

-1 T

O B

-5 .G

P J

G E

O D

E S

IG

N

S T

A N

D A

R D

.G D

T

/1

/1

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 2, 2017 3/2/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-2

B-2 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

7.7

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 2, 2017

Site LLC

WOH

SS

SS

SS

SS

SS

SS

SS

WOH

WOR

WOH

WOH

0.0

2.0

5.0

10.0

15.0

Gravelly Silty

Sand

Silty Sand

Bottom of Exploration at 52.0 ft

33.0

38.0

52.0

33.0

38.0

52.0

Medium dense, gray-red-brown fine to coarse SAND & fine to coarse GRAVEL, little Silt

Medium dense, red-brown fine SAND, trace Silt

Dense, red-brown fine SAND, little Silt

Medium dense, red-brown fine SAND, some Silt

Dense; Top 14": red-brown fine SAND, some Silt Bottom 8": red-brown fine to medium SAND, little Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 2, 2017 3/2/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-2

B-2 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

7.7

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 2, 2017

Site LLC

SS

SS

SS

SS

SS

30.0

35.0

40.0

45.0

Organic Clay and Silt

Peat

1) Open hole drilling methods used from 16-20' prior to taking ST-1.

2) No recovery on ST-1, roller bitted open hole to 22' for ST-2.

3) After sample ST-2 pulled flush joint casing and switched to H.S.A. 2.0" I.D. casing. Advanced casing to 25' for S-6.

15.5

19.5

25.5

29.5

15.5

19.5

25.5

29.5

Loose, brown fine to coarse SAND, trace fine Gravel, trace Silt, trace Glass

Loose, brown-black-red fine to coarse SAND and fine to coarse GRAVEL, little, Brick, trace Silt

Loose, light-brown-black fine to coarse SAND, some fine to coarse Gravel, trace Silt

Loose, black fine to coarse GRAVEL and fine to coarse SAND, trace Silt, trace Glass, petroleum odor

Top 1": very loose, coarse SAND & fine GRAVEL, trace Concrete Bottom 7": PEAT

ST-1: No recovery

ST-2: gray Organic CLAY and SILT, trace Shell fragments, trace Organic Fibers

Soft; Top 3": gray Organic Silty CLAY, some fine Sand, trace Organic Fibers, trace Shell fragments Bottom 5": brown PEAT

B O

R

IN

G L

O G

M C

8-

-0

.0

B O

R

IN

G L

O G

S B

-1 T

O B

-5 .G

P J

G E

O D

E S

IG

N

S T

A N

D A

R D

.G D

T

/1

/1

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/3/17

Sample Description

18 - 24

Strata Description

4.0 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-3

B-3 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.30 in.

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

7.5

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

140 lbs

Automatic - Hydraulic

CME 75 Truck Rig

FJ

March 3, 2017

Site LLC

U

U

SS

SS

SS

SS

SS

ST

ST

SS

S

S

P

P

H

H

0.0

2.0

5.0

10.0

15.0

20.0

22.0

Silty Gravelly

Sand

Silty Sand

Sand

34.5

43.0

58.5

34.5

43.0

58.5

Dense, fine to coarse SAND and fine to coarse GRAVEL, little Silt

Medium dense, red-brown fine SAND, trace Silt

Medium dense, red-brown fine SAND, trace Silt

Medium dense, red-brown fine SAND, little Silt

Medium dense, red-brown fine SAND and SILT

Medium dense, red-brown fine SAND and SILT

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/3/17

Sample Description

18 - 24

Strata Description

4.0 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-3

B-3 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.30 in.

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

7.5

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

140 lbs

Automatic - Hydraulic

CME 75 Truck Rig

FJ

March 3, 2017

Site LLC

SS

SS

SS

SS

SS

SS

30.0

35.0

40.0

45.0

55.0

Sand

81.5

86.0

81.5

86.0

Dense, red-brown fine to medium SAND, trace fine Gravel, trace Silt

Medium dense, red-brown fine to medium SAND, trace Silt

Medium dense, red-brown, fine to medium SAND, trace Silt

Medium dense, red-brown medium to coarse SAND, trace Silt

Medium dense; Top 14": red-brown medium to coarse SAND, trace fine Gravel Bottom 2": red-brown fine SAND and SILT

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/3/17

Sample Description

18 - 24

Strata Description

4.0 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-3

B-3 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.30 in.

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

7.5

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

140 lbs

Automatic - Hydraulic

CME 75 Truck Rig

FJ

March 3, 2017

Site LLC

SS

SS

SS

SS

SS

60.0

65.0

70.0

75.0

80.0

Bottom of Exploration at 102.0 ft

102.0102.0

Medium dense, red-brown fine to medium SAND, trace Silt

Medium dense, red-brown fine to coarse SAND, trace fine Gravel, trace Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/3/17

Sample Description

18 - 24

Strata Description

4.0 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-3

B-3 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.30 in.

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

7.5

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

140 lbs

Automatic - Hydraulic

CME 75 Truck Rig

FJ

March 3, 2017

Site LLC

SS

SS

90.0

100.0

Organic Clay and Silt

Sand and Organic Clayey Silt

1) Cobble at 2', augered to 5' and took 5' sample

15.3

18.5

28.5

15.3

18.5

28.5

Medium dense, brown-black fine to coarse SAND, little fine Gravel, trace Silt, trace Brick fragments, trace Cinders

Medium dense, brown-white-black fine to coarse SAND, trace fine Gracel, trace Silt, trace Brick fragments, trace Glass, trace Cinders, trace Ash, petroleum ordor

Very loose, black fine to medium SAND and SILT, some Cinders, trace Glass, petroleum ordor

Very soft; Top 3": gray-white-black fine to coarse SAND, some Silt, trace Glass, trace Cinders Bottom 7": PEAT

Very soft, gray Organic CLAY and SILT, trace fine Sand, trace Organic Fibers, trace Shell fragments, very strong organic odor

Very soft, gray Organic CLAY and SILT, trace fine Sand, trace Organic Fibers, trace Shell fragments, very strong organic odor

B O

R

IN

G L

O G

M C

8-

-0

.0

B O

R

IN

G L

O G

S B

-1 T

O B

-5 .G

P J

G E

O D

E S

IG

N

S T

A N

D A

R D

.G D

T

/1

/1

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/1/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-4

B-4 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

10.1

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing afer 10 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 2, 2017

Site LLC

WOH

WOH

WOH

SS

SS

SS

SS

SS

SS

WOH

WOH

WOH

WOH

WOH

WOH

0.0

5.0

10.0

15.0

Sand and Organic Clayey Silt (Continued)

Gravelly Silty Sand

Sand

Bottom of Exploration at 52.0 ft

32.5

39.0

52.0

32.5

39.0

52.0

Loose, dark gray fine SAND and Organic Clayey

SILT

Medium dense, gray-brown fine to medium SAND and SILT, little fine Gravel

Loose, red-brown fine to medium SAND, little Silt

Loose, brown fine to medium SAND, trace Silt, trace fine Gravel

Medium dense, orange-brown fine to medium SAND, trace Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/1/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-4

B-4 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

10.1

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing afer 10 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 2, 2017

Site LLC

SS

SS

SS

SS

SS

30.0

35.0

40.0

Asphalt Gravel Base

Fill

Sand

Organic Clay and Silt

15.0

18.5

15.0

18.5

Medium dense; Top 3": ASPHALT Bottom 10": gray-brown fine to coarse SAND, little fine to coarse Gravel, little Silt

Medium dense, black-red-brown fine to coarse SAND, some fine to coarse Gravel, trace Silt, trace Brick fragments

Very loose, white-brown-black fine to coarse SAND, trace fine Gravel, trace Silt, trace Cinders

Loose, brown fine to coarse GRAVEL, little fine to medium Sand, trace Silt

Very loose, brown fine to medium SAND, trace Silt, trace Organic Fibers

Very soft, gray Organic CLAY and SILT, trace Organic Fibers

Very soft, gray Organic Silty CLAY, trace fine Sand, trace Shell fragments with occasional Organic Fibers

B O

R

IN

G L

O G

M C

8-

-0

.0

B O

R

IN

G L

O G

S B

-1 T

O B

-5 .G

P J

G E

O D

E S

IG

N

S T

A N

D A

R D

.G D

T

/1

/1

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/1/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-5

B-5 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

13.2

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 1, 2017

Site LLC

WOH

SS

SS

SS

SS

SS

SS

SS

WOH

WOH

0.0

2.0

5.0

10.0

15.0

Organic Clay and Silt (Continued)

Silty Gravelly Sand

Sand

35.0

39.0

35.0

39.0

Soft, dark gray Organic CLAY and SILT, little fine Sand, trace Organic Fibers

Dense. gray fine to coarse SAND and fine to coarse GRAVEL, little Silt

Loose, no recovery

Medium dense, red-brown fine SAND, trace Silt

Medium dense, red-brown fine to medium SAND, trace Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/1/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-5

B-5 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

13.2

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 1, 2017

Site LLC

WOH

SS

SS

SS

SS

SS

WOH

30.0

35.0

40.0

Sand (Continued) Medium dense, red-brown fine to medium SAND, trace Silt

Medium dense, red-brown fine to coarse SAND, trace fine Gravel, trace Silt

Medium dense, red-brown fine to medium SAND, trace Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/1/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-5

B-5 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

13.2

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 1, 2017

Site LLC

SS

SS

SS

60.0

70.0

80.0

Bottom of Exploration at 102.0 ft

95.0

102.0

95.0

102.0

Medium dense, red-brown fine to coarse SAND, trace fine Gravel, trace Silt

Medium dense, red-brown fine SAND, some Silt

N. Coordinate:

D ep th ft

SS

140 lbs

1.38 in.

N um be r

Hammer Fall:

March 1, 2017 3/1/17

Sample Description

18 - 24

Strata Description

2.25 in.

Sample Information

Station:

C or in g

T im e (m in ft

Date Finished:

BORING LOG B-5

B-5 ft

Boring No.:

Page No.:

File No.:

Checked By:

30 in.N/A

Blows / 6 inch Interval

12 - 18

Notes

GeoDesign Rep.:

Hammer Wt.:

Depth (ft)

13.2

M oi st ur e C on te nt

John DeAngelis

Offset:

3959-001.00

DFL

Type:

I.D.:

Groundwater Observations

D ep th ft

Casing:

Notes:

E. Coordinate:

Date

T yp e

0 - 6

Ground Surface Elevation (feet):

Sampler:

Rig Type:

Depth & Elevation(feet)

Boring Company:

C as in g

B lo w s/ ft Ralph Walker Ice Rink Renovation

1080 State Street New Haven, CT

Project Name

Date Started:

R ec ov er y (i nc he s)

In casing after 5 min.

P en et ra ti on

(i nc he s)

1) Stratification lines represent approximate boundary between material types, transitions may be gradual.

2) Water level readings have been made at times and under conditions stated, fluctuations of groundwater may occur due to other factors than those present at the time measurements were made. AC = After coring; NR = Not Recorded.

3) Abbreviations: A = Auger; C = Core; MC=Macrocore; D = Driven; G = Grab; PS = Piston Sample; SS = Split Spoon; SSL = 3.5 Inch ID Split Spoon; ST = Shelby Tube;

V = Vane; WOR/H = Weight of Rod/Hammer

4) Proportions Used: Trace = 1-10%; Little = 10-20%; Some = 20-35%; And = 35-50%

984 Southford Road - Middlebury, CT 06762 Telephone: (203) 758-8836 Fax: (203) 758-8842

Foreman:

S ym bo l

Classification System: Modified Burmister6 - 12

Elev.

(ft)

R em ar ks

Hammer Type:

Boring No.:

Geotechnical | Construction | Environmental Engineers and Scientists

VAM/LTB

John DeAngelis

N/A

Automatic - Hydraulic

CME 75 Truck Rig

2.25

March 1, 2017

Site LLC

SS

SS

90.0

100.0

APPENDIX 3

LAB RESULTS

Client: GeoDesign, Inc.

Project: Ralph Walker Ice Rink Location: New Haven, CT Project No: GTX-306163 Boring ID: --- Sample ID: --- Depth : ---

Sample Type: --- Test Date: 03/21/17 Test Id: 406744

Tested By: jbr Checked By: emm

Moisture Content of Soil and Rock - ASTM D2216 printed 3/27/2017 4:03:43 PM

Boring ID Sample ID Depth Description Moisture Content,%

B-1

B-2

B-3

B-4

S- 4

S- 6

S- 6

S- 6

10-12 ft

20-22 ft

25-27 ft

25-27 ft

Moist, gray clay

Moist, gray silt

Moist, dark brown silt with organics

Moist, gray clay

92.4

46.3

239.3

73.8

Notes: Temperature of Drying : 110º Celsius

Location: New Haven, CT Project No: GTX-306163 Boring ID: --- Sample ID: --- Depth : ---

Sample Type: --- Test Date: 03/22/17 Test Id: 406748

Tested By: cam Checked By: emm

Moisture, Ash, and Organic Matter - ASTM D2974 printed 3/27/2017 4:03:10 PM

Boring ID Sample ID Depth Description Moisture Content,%

Ash Content,%

Organic Matter,%

B-2

B-3

S-6

S-6

20-22 ft

25-27 ft

Moist, gray silt

Moist, dark brown silt with organics

96.7

42.8

3.3

57.2

Notes: Moisture content determined by Method A and reported as a percentage of oven-dried mass;

dried to a constant mass at temperature of 105º C Ash content and organic matter determined by Method C; dried to constant mass at temperature 440º C

Location: New Haven, CT Project No: GTX-306163 Boring ID: B-2 Sample ID: S-6 Depth : 20-22 ft

Sample Type: jar Test Date: 03/22/17 Test Id: 406745

Tested By: cam Checked By: emm

Test Comment: --- Visual Description: Moist, gray silt Sample Comment: ---

Atterberg Limits - ASTM D4318 printed 3/27/2017 4:02:45 PM

0 10 20 30 40 50 60 70 80 90 100

P la st ic ity In de x

Liquid Limit

Plasticity Chart

ML or OLCL-ML

CL or OL

MH or OH

CH or OH

"A" Line

"U" Line

Symbol Sample ID Boring Depth Natural Moisture

Content,%

Liquid Limit

Plastic Limit

Plasticity Index

Liquidity Index

Soil Classification

S-6 B-2 20-22 ft 46 47 29 18 1

Sample Prepared using the WET method

Dry Strength: VERY HIGH

Dilatancy: SLOW

Toughness: LOW

Location: New Haven, CT Project No: GTX-306163 Boring ID: B-3 Sample ID: S-6 Depth : 25-27 ft

Sample Type: jar Test Date: 03/22/17 Test Id: 406746

Tested By: cam Checked By: emm

Test Comment: --- Visual Description: Moist, dark brown silt with organics Sample Comment: ---

Atterberg Limits - ASTM D4318 printed 3/27/2017 4:02:45 PM

0 100 200 300 400

P la st ic ity In de x

Liquid Limit

Plasticity Chart

MH or OH

CH or OH

"A" Line

"U" Line

Symbol Sample ID Boring Depth Natural Moisture

Content,%

Liquid Limit

Plastic Limit

Plasticity Index

Liquidity Index

Soil Classification

S-6 B-3 25-27 ft 239 387 280 107 -0.4

Sample Prepared using the WET method

Dry Strength: VERY HIGH

Dilatancy: SLOW

Toughness: LOW

APPENDIX 4

LIMITATIONS

LIM…