Report_4_Geotech.pdf

Form FHWA-201 (Rev. 11-67)

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

Use this form in lieu of transmittal slips within Dept. of Trans. When message comment is to be retained as file material. Do not prepare carbons. Not to be used in lieu of Form FHWA- 121 for informal correspondence. MEMORANDUM cc: TS Reading, HD, All w/ attachment

M:\PROJECTS\asis\md2013-1(3)\Techserv\Geotech\Reports\Final Report\PDF\ASIS_MD_ERFO_2013-1(3)_Memo_01-07-2014_(Final).doc

SUBJECT: MD ERFO ASIS 2013-1(3) - Subsurface Exploration and Infiltration Evaluation

TO MESSAGE/COMMENT FROM/DATE

John Wilson Project Manager

Through:

A. Teikari Highway Design Engineer

This memorandum summarizes the results of subsurface exploration and infiltration evaluation for the Life of the Dunes and the Bay Side Parking Lots, located in Assateague Island National Seashore in Worcester County, Maryland. The Project Location Map is provided in Attachment No. 1.

GEOLOGIC SETTING

REGIONAL GEOLOGY

USGS Open File Report No. 2005-1325 indicates that the project site to be located within Quaternary alluvial deposits which consist primarily of beach zone sand and gravel. A Site Geologic Map is included in Attachment No. 1.

SOIL SURVEY

According to the United States Department of Agriculture Web Soil Survey for Worchester County, Maryland, the Parking Lots are located within sand, loamy sand, and loam units derived from marine deposits. A Soil Survey Map is included in Attachment No. 1.

PROCEDURES AND RESULTS

EFLHD’s Subsurface Exploration Team drilled eight (8) soil borings (B-1 through B-8), four at each parking lot. Borings were drilled using a CME 750 All Terrain Vehicle (ATV)-mounted rotary drill rig. The soil borings were laid out by EFLHD field personnel by referencing ground-surface topography, measuring distances from existing surface features, and estimating right-angles. Due to the field methods used, borings location showed in the attachment should be considered approximate. Ground surface elevations at the borings location were determined from the topography plans provided by the Survey Division. The boreholes were backfilled with auger cuttings upon completion. The approximate locations of the soil borings are shown in the Borings Location Map in Attachment No. 2.

The results of field tests and measurements were recorded on the driller’s field logs and appropriate data sheets in the field. These data sheets and logs contain information concerning the boring methods, samples recovered, indications of the presence of various materials such as gravel and organic matter and observations of groundwater. Recorded field data represents both factual and interpretative information.

C. Lynch Geotechnical Engineer, EIT

Through:

M.

Abouzakhm Division Geotechnical

Through:

S. Whittemore Technical Services

1/7/2014

Sampling and Field Testing

The borings were advanced using 3¾-in. (inside diameter) hollow stem augers. Standard Penetration Tests (SPT) were performed using a 2¼-in.

(outside diameter) split-spoon sampler in general accordance with AASHTO T206. SPT soil samples were typically recovered at 2-ft intervals by driving the split-spoon sampler a distance of 24 inches, or until refusal, into the undisturbed soil under the action of a 140-pound automatic hammer free-falling 30 inches. The number of hammer blows required to advance the split-spoon sampler through the middle 12 inches of the 24-inch sample interval is designated as the “Standard Penetration Resistance” or N-value.

Split-spoon refusal is defined as 50 blows per 1-inch of penetration of the split-spoon sampler. The N-values and the number of blows required to advance the sampler through each 6-inch interval was recorded on field boring logs. Representative portions of split-spoon samples were placed into glass sample jars, labeled, and transported to EFLHD Material Testing Laboratory in Sevierville, Tennessee for testing and storage.

The sampling sequence and associated samples for the borings is presented in Attachment No. 3. The boring logs in Attachment No. 3 represent a compilation of field data and description of the soil samples by a geotechnical engineer. These records may not include all data recorded on the driller’s logs and field data sheets, but include all information considered relevant to the design.

Groundwater depth readings were made at the times and under the conditions stated on the boring logs. Fluctuations in groundwater elevations due to seasonal and tidal variations, rainfall, temperature, and other factors not evident at the time measurements were made should be expected.

Infiltration Testing

One infiltration test was performed in vicinity of boring B-6. This boring yielded the deepest groundwater at the time of our drilling operation (4.2 ft below existing site grade). To perform the test, the drilling crew offset 2 ft and drove a 5-ft long, 4-inch PVC pipe to a depth of 3± ft below existing site grade. On October 19th, 2013, the PVC pipe was partially filled with water and left to saturate overnight, and the infiltration test was completed the following day. The test consisted of partially re-filling the PVC pipe completely with water, and recording the drop in water level in the PVC pipe at 30 minute intervals for a period of 240 minutes. Field measurements are included in Attachment No. 5.

Laboratory Testing

Laboratory testing was performed on selected samples and included gradation analysis by sieve and hydrometer (AASHTO T-88), and USCS and USDA classifications.

Table 1 contains a summary of laboratory test results and copies of the laboratory results are included in Attachment No. 4. USDA classifications for representative soil samples are shown in Table 1 and in Figure 1.

Table 1. Summary of Laboratory Testing Results

Boring

Sand1 Silt

Clay

USDA

Texture Class.

USCS

Class.

AASHTO

Class.

Sample Depth

(ft) B-2 87.8 5.2 7.0 Loamy

Sand

SM A-2-4(0) 1-3

B-4 89.5 6.4 4.1 Sand SW-SM A-3 1-3 B-5 83.1 9.7 7.2 Loamy

Sand

SM A-2-4(0) 1-3

B-7 90.4 5.2 4.4 Sand SP-SM A-3 1-3 1 Percent gravel included in percent sand for purposes of USDA classification.

FINDINGS

Data Summary

Boring logs include the sampling sequence and associated jar samples for each boring along with the visual description of each soil stratum.

Subsurface Conditions

The subsurface conditions encountered during our drilling operations are shown in the boring logs. The stratification lines designating the interfaces between soil types on the logs represent approximate boundaries. The transition between materials may be gradual. It should be noted that one or more of the units may be absent at specific locations.

In general, the borings encountered loose to medium dense silty sand, well-graded sand with silt, and poorly-graded sand with silt, with SPT N-values ranging from 6 to 26 blows per foot.

Figure 1. USDA soil texture classification chart. Boring B-2 plotted in red, B-4 in blue, B-5 in green, and B-7 in black.

The infiltration test performed for B-6 resulted in a rate of 1.92 inch/hour at the end of the test. Field measurements are included in Attachment No. 5.

Recommendations

Based on the results of our drilling operations and field and laboratory testing, it is our opinion that an infiltration rate of 1.02 in/hr may be assigned for SWM design computations. This value represents minimum infiltration rate for Sandy Loam as listed in Table D.13.1 of the Maryland Stormwater Design Manual, Revised May 2009. However, groundwater depths may be the governing factors for SWM design of the proposed parking lots.

Attachments Attachment No. 1 – Figures Attachment No. 2 – Boring Location Maps Attachment No. 3 – Boring Logs Attachment No. 4 – Laboratory Test Results Attachment No. 5 – Field Infiltration Testing Attachment No. 6 – Selected Photographs

Attachment No. 1

Figures

M

P R

O J E

C T

S a s is m d -1 (3

T e c h s e r v G e o te c h C

A D

D m d e r f o a s is

-1 (3

L o c a ti o n , P la n , P r o f il e .d g n

:1 :1

A

-J a n -2

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

STERLING, VIRGINIA

REG STATE PROJECT SHEET NO.

SE

NO.

PMIS

NO.

NPS

MD

120980

BORING LOCATION MAPS

201455 MD ERFO 2013-1(3) 1 OF 1

ASSATEAGUE ISLAND NATIONAL SEASHORE

PROJECT LOCATION MAP

LIFE OF THE DUNES PARKING LOT

BAYSIDE PARKING LOT

N

KEY MAP

STATE OF MARYLAND

SALISBURY

BALTIMORE

CUMBERLAND

FREDERICK

0 4040

SCALE IN MILES

ASIS 2013-1(3)

PROJECT MD ERFO

SE

SHEET

NO.

PROJECT

STATEREG

ASIS MD ERFO

2013-1(3)

TOTAL

SHEETS

Source: USGS Open-File Report 2005-1325. Preliminary Integrated Geologic Map Databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia.

http://mrdata.usgs.gov/sgmc/tn.html

1MD

GEOLOGIC MAP

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL LANDS HIGHWAY DIVISION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

STERLING, VIRGINIA

Alluvial Deposits Undivided (Qdu): Quaternary Deposits Undivided ‐ Undifferentiated gray to buff sand and gravel, gray to brown lignitic silt and clay, occasional boulders, and rare shell beds. Surficial deposits occur as intercalated fluvial sands and marsh muds (e.g. in upstream floodplain of the Wicomico and Nanticoke Rivers), well‐sorted, stablized dune sands (e.g. eastern Wicomico County), shell‐bearing estuarine clays and silts (e.g. lower Dorchester County) and Pocomoke River basin of Worcester County), and beach zone sands (e.g. Fenwick and Assateague Islands). Wisconsin to Holocene in age. Subsurface deposits of pre‐Wisconsin age consist of buff to reddish‐brown sand and gravel locally incised into Miocene sediments (e.g. Salisbury area), estuarine to marine white to gray sands, and gray to blue, shell‐bearing clays (e.g. Worcester County).

Geologic Age: Quaternary Primary Rock Type: sand Secondary Rock Type: gravel

Qdu

ASIS MD ERFO

2013‐1(3)

Qdu

Qdu

AcB Acquango-Beaches Complex Be Beaches Parent material: Sandy eolian deposits and/or sandy marine deposits Parent material: Beach sand

0 to 3 inches: Sand Typical profile:

3 to 20 inches: Sand 0 to 2 inches: Sand

20 to 26 inches: Fine sand 2 to 80 inches: Sand

26 to 72 inches: Sand UzB Udorthents

AsA Askecksy loamy sand Parent material: Fluviomarine deposits

Parent material: Sandy eolian deposits and/or fluviomarine sediments Typical profile:

0 to 3 inches: Moderately decomposed plant material 0 to 2 inches: Loam

3 to 8 inches: Loamy sand 2 to 72 inches: Gravelly loam

8 to 21 inches: Loamy sand Pu Purnell peat 21 to 29 inches: Sand Parent material: Herbaceous organic material over sandy marine deposits

29 to 80 inches: Sand Typical profile:

BkA-BkB Brockatonorton sand 0 to 3 inches: Peat

Parent material: Sandy eolian deposits and/or sandy marine deposits 3 to 13 inches: Mucky peat

0 to 3 inches: Sand 13 to 18 inches: Sand

3 to 24 inches: Sand 18 to 79 inches: Sand

24 to 50 inches: Sand UpB Urban land 50 to 60 inches: Mucky peat W Water

60 to 72 inches: Sand

Worcester County, Maryland Source: http://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx

SOIL SURVEY MAP

REG STATE PROJECT

SHEET

NO.

TOTAL

SHEETS

1 1

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL LANDS HIGHWAY DIVISION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

NE MD

ASIS MD ERFO

2013-1(3)STERLING, VIRGINIA

Life of the Dunes Parking Lot

Bayside Parking Lot

Attachment No. 2

Boring Locations Maps

N

P R

O J E

C T

S a s is m d -1 (3

T e c h s e r v G e o te c h C

A D

D m d e r f o a s is

-1 (3

L o c a ti o n , P la n , P r o f il e .d g n

:1 :2

-J a n -2

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

STERLING, VIRGINIA

REG STATE PROJECT SHEET NO.

SE

NO.

PMIS

NO.

BORING LOCATION MAPS

HORIZONTAL SCALE IN FEET

0 25' 50'

201455 MD ERFO 2013-1(3) 1 OF 2

ASSATEAGUE ISLAND NATIONAL SEASHORE

N 196000 E

N 196200 E

NO

PARKING

ANY

TIME

sign 2 Ahead Blind

Trail of Dunes Life

Prohibited Pets & Bikes

TBAR

B-1

B-2

B-4

B-3

B-4 196099.2 1841373.0 4.2 2.6

B-3 196058.3 1841299.5 4.3 2.4

B-2 196161.7 1841290.7 4.2 2.6

B-1 196201.6 1841365.1 4.1 2.1

No. (ft) (ft) Elevation (ft) Groundwater (ft)

Boring Northing Easting Ground Surface Depth to

LIFE OF THE DUNES PARKING LOT

Groundwater depth monitored after boring completion.

LEGEND

Depth water was encountered during drilling.

Groundwater depth monitored after boring completion.

Standard Penetration Test

Resistance in Blows per Foot

CONDITIONS MAY VARY BETWEEN THESE LOCATIONS.

AT THE BORING LOCATIONS SHOWN. SUBSURFACE

THE SUBSURFACE CONDITIONS ENCOUNTERED

THE BORING LOGS ON THIS SHEET REPRESENT

N

-4

-3

-2

-1

-4

-3

-2

-1

E le v a ti o n ft

E le v a ti o n ft

0.4

0.7

B-1

0.35

0.6

B-2

0.35

0.6

B-3

0.3

0.8

B-4 Depth (ft) N (bpf)

Depth (ft) N (bpf)

Depth (ft) N (bpf)

Depth (ft) N (bpf)

N

P R

O J E

C T

S a s is m d -1 (3

T e c h s e r v G e o te c h C

A D

D m d e r f o a s is

-1 (3

L o c a ti o n , P la n , P r o f il e .d g n

:2

-J a n -2

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

STERLING, VIRGINIA

REG STATE PROJECT SHEET NO.

SE

NO.

PMIS

NO.

BORING LOCATION MAPS

Groundwater depth monitored after boring completion.

LEGEND

Depth water was encountered during drilling.

Groundwater depth monitored after boring completion.

N Standard Penetration Test

Resistance in Blows per Foot

CONDITIONS MAY VARY BETWEEN THESE LOCATIONS.

AT THE BORING LOCATIONS SHOWN. SUBSURFACE

THE SUBSURFACE CONDITIONS ENCOUNTERED

THE BORING LOGS ON THIS SHEET REPRESENT

201455 MD ERFO 2013-1(3) 2 OF 2

ASSATEAGUE ISLAND NATIONAL SEASHORE

HORIZONTAL SCALE IN FEET

0 50' 100'

N 202800 E

N 203000 E

N 203200 E

N 202800 E

N 203000 E

N 203200 E

B-7

NO

PARKING

ANY

TIME

NO

PARKING

ANY

TIME

NO

PARKING

ANY

TIME

TBAR

RECYCLE

B

IN

Kiosk Interpretive

R e n ta l

B o a t

B-5

TBAR

B-8

B-6

DO NOT

ENTER

B-8 202822.0 1838883.7 3.8 3.2

B-7 202978.3 1838736.8 3.8 3.4

B-6 203117.6 1838805.6 5.0 4.2

B-5 202997.2 1838921.4 4.7 3.6

No. (ft) (ft) Elevation (ft) Groundwater (ft)

Boring Northing Easting Ground Surface Depth to

BAY SIDE PARKING LOT

-4

-3

-2

-1

-4

-3

-2

-1

E le v a ti o n ft

E le v a ti o n ft

Water Faucet

0.6

0.9

1.8

B-5

0.25

0.6

B-6

B-7

1.9

B-8 N (bpf)

Depth (ft) N (bpf)

Depth (ft) N (bpf)

Depth (ft) N (bpf) Depth (ft)

PARKING

RESERVED

Attachment No. 3

Boring Logs

7-10-11-12

2-4-9-11

1-8-10-14

1.8

1.4

1.1

0.4

0.7

7.0

Asphalt Pavement

Black, Fine SAND, with gravel, moist.

-FILL-

Medium dense, light brown to brown, Fine SAND, with silt, moist to wet.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/18/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Life of the Dunes Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

4.1 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/18/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-1

140 lbs/Automatic

R Q

D

3.75 in.2.1

30 in.

B lo w s pe r in

Cool, Clear

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

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C

T S

\A S

IS

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-1

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C H

S E

R V

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A L

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P O

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\P D

F \A

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A C

H M

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M A

\A T

T A

C H

M E

N T

B

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IN

G

L O

G S

\A S

IS

-1 (3

)M A

.G P

J

3.7

3.4

-2.9

9-10-9-9

4-9-9-11

1-4-9-16

1.8

1.5

1.2

0.4

0.6

7.0

Asphalt Pavement

Black, Fine SAND, with gravel, moist.

-FILL-

Medium dense, light brown to brown, Fine SAND, with silt, wet.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/18/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Life of the Dunes Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

4.2 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/18/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-2

140 lbs/Automatic

R Q

D

3.75 in.2.6

30 in.

B lo w s pe r in

Cool, Clear

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

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C

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\A S

IS

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\P D

F \A

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A C

H M

E N

T S

M A

\A T

T A

C H

M E

N T

B

O R

IN

G

L O

G S

\A S

IS

-1 (3

)M A

.G P

J

3.8

3.6

-2.8

8-13-13-15

8-10-12-14

1-6-7-11

1.7

1.2

1.6

0.4

0.6

7.0

Asphalt Pavement

Dark brown, SILTY SAND, with round gravel, moist.

-FILL-

Medium dense, light to dark brown, Fine SAND, with silt, moist to wet.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/19/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Life of the Dunes Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

4.3 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/19/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-3

140 lbs/Automatic

R Q

D

3.75 in.2.4

30 in.

B lo w s pe r in

Cool, Light Scattered Showers

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

JE

C

T S

\A S

IS

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C H

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B

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\A S

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-1 (3

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4.0

3.7

-2.7

9-12-13-17

3-9-11-14

2-5-8-10

1.7

1.2

0.3

0.8

7.0

Asphalt Pavement

Dark brown, SILTY SAND, with gravel, moist.

-FILL-

Medium dense, light to dark brown, Fine SAND, with silt, moist.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/19/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Life of the Dunes Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

4.2 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/19/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-4

140 lbs/Automatic

R Q

D

3.75 in.2.6

30 in.

B lo w s pe r in

Cool, Light Scattered Showers

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

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C

T S

\A S

IS

\M

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3.9

3.4

-2.9

5-8-8-10

3-6-5-6

3-3-3-5

1.8

1.5

1.4

0.6

0.9

7.0

Asphalt Pavement.

Dark gray, SANDY SILT, with gravel, moist.

-FILL-

Medium dense, gray to dark gray, Fine SAND, with silt and clay, moist.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/19/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Bay Side Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

4.7 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/19/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-5

140 lbs/Automatic

R Q

D

3.75 in.3.6

30 in.

B lo w s pe r in

Cool, Light Scattered Showers

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

JE

C

T S

\A S

IS

\M

D

-1

(3

T E

C H

S E

R V

\G E

O T

E C

H \R

E P

O R

T S

\F

IN

A L

R E

P O

R T

\P D

F \A

T T

A C

H M

E N

T S

M A

\A T

T A

C H

M E

N T

B

O R

IN

G

L O

G S

\A S

IS

-1 (3

)M A

.G P

J

4.1

3.8

-2.3

4-6-7-9

4-6-11-12

4-9-8-6

2.0

1.7

1.0

0.3

0.6

7.0

Asphalt Pavement

Dark brown, SILTY SAND, with gravel, moist.

-FILL-

Medium dense, light brown to brown, Fine SAND, with silt, moist.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/19/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Bay Side Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

5.0 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion. Infiltration test performed 1-ft south of sample borehole.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/19/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-6

140 lbs/Automatic

R Q

D

3.75 in.4.2

30 in.

B lo w s pe r in

Cool, Light Scattered Showers

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

JE

C

T S

\A S

IS

\M

D

-1

(3

T E

C H

S E

R V

\G E

O T

E C

H \R

E P

O R

T S

\F

IN

A L

R E

P O

R T

\P D

F \A

T T

A C

H M

E N

T S

M A

\A T

T A

C H

M E

N T

B

O R

IN

G

L O

G S

\A S

IS

-1 (3

)M A

.G P

J

4.7

4.4

-2.1

2-5-6-7

2-5-6-7

3-3-3-4

1.9

1.4

1.5

7.0

Loose to medium dense, light brown, Fine SAND, with silt, moist to wet.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/19/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Bay Side Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

3.8 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/19/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-7

140 lbs/Automatic

R Q

D

3.75 in.3.4

30 in.

B lo w s pe r in

Cool, Light Scattered Showers

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

JE

C

T S

\A S

IS

\M

D

-1

(3

T E

C H

S E

R V

\G E

O T

E C

H \R

E P

O R

T S

\F

IN

A L

R E

P O

R T

\P D

F \A

T T

A C

H M

E N

T S

M A

\A T

T A

C H

M E

N T

B

O R

IN

G

L O

G S

\A S

IS

-1 (3

)M A

.G P

J

-3.3

1-2-4-5

3-4-4-4

1-3-3-3

1.9

1.4

1.5

7.0

Loose, light brown, Fine SAND, with silt, moist.

Boring was terminated at 7 ft

J-1

J-2

J-3

(Blows / ft)

Project Name:

R ec ft/

N o.

N/A

10/19/13 C. Lynch

R.Kingsley/D.HutchinsOperator:

Bay Side Parking Lot

U. S. DEPARTMENT OF TRANSPORTATION

Encountered at:

After

Groundwater Depth (ft):

Water Content %

3.8 ft

Penetrometer

Sample Types:

Rock Core

BORING LOG

10 60

T yp e

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Plastic Limit

D ep th S ca le ft)

Boring was backfilled with auger cuttings upon completion.

SPT

Hammer Wt. & Type:

Liquid Limit

Boring No.:

Assateague Island National Seashore, Worcester County, Maryland

Inspector:

Standard Penetration Test Data

Boring Began: 10/19/13

HS/SS

Project Location:

At Completion:

Completed:

Hole Diameter:

Boring Method:

Rock Core Diam:

Vane Shear

Boring Location:

B-8

140 lbs/Automatic

R Q

D

3.75 in.3.2

30 in.

B lo w s pe r in

Cool, Light Scattered Showers

La ye r D ep th ft)

MD ERFO ASIS 2013-1(3)

E le va tio n (f ee t)

Weather:

SAMPLE

hrs

Remarks:

Auger Cuttings UD

40 80

MATERIAL DESCRIPTION

G ra ph ic

L og

Caved at:

Hammer Drop:

Surface Elevation:

B O

R

IN

G L

O G

/7

/1

:5

M :\P

R O

JE

C

T S

\A S

IS

\M

D

-1

(3

T E

C H

S E

R V

\G E

O T

E C

H \R

E P

O R

T S

\F

IN

A L

R E

P O

R T

\P D

F \A

T T

A C

H M

E N

T S

M A

\A T

T A

C H

M E

N T

B

O R

IN

G

L O

G S

\A S

IS

-1 (3

)M A

.G P

J

-3.2

Attachment No. 4

Laboratory Test Results

SOIL DATA

NO.

USCSDESCRIPTION

DEPTHSAMPLE

SOURCESYMBOL

Project No.:

Project:

Client:

Particle Size Distribution Report

P E

R C

E N

T F

IN

E

R

100 10 1 0.1 0.01 0.001200 GRAIN SIZE - mm

% + 3"

% GRAVEL

CRS. FINE

% SAND

CRS. MEDIUM FINE

% FINES

SILT CLAY

in in in

1- 1/ in in

3/ in

1/ in

3/ in

#4 #1

#2

#3

#4

#6

#1

#1

#2

0.0 0.0 3.7 1.2 9.5 73.4 5.2 7.0

(ft.)

ASIS MD ERFO 2013-1(3)

Assateague Island National Seashore

FHWA/EFLHD

Life of Dunes B-2/J-1 1-3 Silty sand SM

Particle Size Distribution Report

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

0.0 1.2 10.2 5.8 16.7 55.6 6.4 4.1

Life of Dunes B-4/J-1 1-3 Well-graded sand with silt SW-SM

NO.

USCSDESCRIPTION

DEPTHSAMPLE

SOURCESYMBOL

Project No.:

Project:

Client:

Particle Size Distribution Report

P E

R C

E N

T F

IN

E

R

100 10 1 0.1 0.01 0.001200 GRAIN SIZE - mm

% + 3"

% GRAVEL

CRS. FINE

% SAND

CRS. MEDIUM FINE

% FINES

SILT CLAY

in in in

1- 1/ in in

3/ in

1/ in

3/ in

#4 #1

#2

#3

#4

#6

#1

#1

#2

0.0 0.0 2.7 6.1 5.8 68.5 9.7 7.2

(ft.)

ASIS MD ERFO 2013-1(3)

Assateague Island National Seashore

FHWA/EFLHD

Bayside P.L. B-5/J-1 1-3 Silty sand SM

Particle Size Distribution Report

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

0.0 0.0 4.2 5.1 6.5 74.6 5.2 4.4

Bayside P.L. B-7/J-1 1-3 Poorly graded sand with silt SP-SM

INDEXLIMITLIMITCONTENTNO.

PLASTICITYLIQUIDPLASTICWATERDEPTHSAMPLE

NATURAL

SOURCESYMBOL

Project No.:

Project:

Client:

LIQUID AND PLASTIC LIMITS TEST REPORT

(ft.)

AASHTO

ASIS MD ERFO 2013-1(3)

Assateague Island National Seashore

FHWA/EFLHD

A-2-4(0)NPNVNP14.71-3B-2/J-1Life of Dunes

LIQUID AND PLASTIC LIMITS TEST REPORT

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

A-3NPNVNP12.21-3B-4/J-1Life of Dunes

10 30 50 70 90 110

LIQUID LIMIT

P

LA

S T

IC

IT

Y

IN

D E

X

PI

=L

L-

A-4 or A-2-4 A-5 or A-2-5

A-7-6

A-6 or A-2-6

A-7-5 or A-2-7

INDEXLIMITLIMITCONTENTNO.

PLASTICITYLIQUIDPLASTICWATERDEPTHSAMPLE

NATURAL

SOURCESYMBOL

Project No.:

Project:

Client:

LIQUID AND PLASTIC LIMITS TEST REPORT

(ft.)

AASHTO

ASIS MD ERFO 2013-1(3)

Assateague Island National Seashore

FHWA/EFLHD

A-2-4(0)NPNVNP14.31-3B-5/J-1Bayside P.L.

LIQUID AND PLASTIC LIMITS TEST REPORT

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

A-3NPNVNP13.81-3B-7/J-1Bayside P.L.

10 30 50 70 90 110

LIQUID LIMIT

P

LA

S T

IC

IT

Y

IN

D E

X

PI

=L

L-

A-4 or A-2-4 A-5 or A-2-5

A-7-6

A-6 or A-2-6

A-7-5 or A-2-7

Attachment No. 5

Field Infiltration Testing

Field Measurements (10/20/2013)

Boring B-6

Elapsed Time (min)

Water Level (ft) Drop (ft)/inch Infiltration Rate (in/hr)

0 0.00 N/A N/A 30 0.230 0.23/2.76 60 0.385 0.155/1.86 3.72 90 0.490 0.105/1.26 120 0.600 0.11/1.32 2.64 150 0.815 0.215/2.58 180 1.010 0.195/2.34 4.68 210 1.140 0.13/1.56 240 1.220 0.08/0.96 1.92

Notes:

1. All depths are below the top of casing (TOC).

2. The bottom of the pipe was located at a depth of 3± ft below existing site grade.

3. The PVC riser was 2 ft above existing site grade.

4. No coarse sand or fine gravel layer was placed in the bottom of the hole.

Minimum measured infiltration rate: 1.92 in/hr.

Attachment No. 6

Selected Photographs

Photo 1. Boring B-2, J-2

Photo 2. Boring B-2, J-3

Photo 3. Boring B-8.

Photo 4. Boring B-8, J-1.