Amendment_W912WJ18B00210002_Attach_3_PLY-Dredging-Sediment-Core-Logs_25_JUL_18.pdf

Plymouth Harbor, MA

Federal Navigation Project

Sediment Sampling

Core Logs

May 16, 2017

ATTACHMENT A

PROJECT: Plymouth Harbor FNP DATE: 5/16/2017

SAMPLING PERSONNEL: RBL, ADH, MJN

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: A SAMPLER TYPE: VC

TIME: 09:59

SOUNDING: 14.9’ CORRECTED DEPTH: 14.2’

COORDINATES: N 41.977615 E -70.654090

PENETRATION/RECOVERY: 3.0/3.0’ NO. OF ATTEMPTS: 2

MATERIAL DESCRIPTION: Poorly graded fine sand

CORE PHOTO: NOTES:

0-0.7’: (SM) Olive gray fine sand and silt with shells at surface. Densely packed.

0.7-1.5’: (SP) Olive gray fine sand. Densely packed.

1.5-3.0’: (SP) Gray sand with gravel and shell fragments.

Core taken beyond project depth

Sample interval: 0-2.8’

Processed at 16:41

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: B SAMPLER TYPE: VC

TIME: 10:21

SOUNDING: 15.3’ CORRECTED DEPTH: 14.6’

COORDINATES: N 41.976750 E -70.653262

PENETRATION/RECOVERY: 3.5/3.4’ NO. OF ATTEMPTS: 2

0-2.4’: (SP) Light gray fine sand with gravel and shell fragments at surface. Densely packed.

2.4-3.4’: (SP) Dark gray fine to medium sand. Densely packed.

Core taken beyond project depth

Sample interval: 0-2.4’

Processed at 16:51

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: C SAMPLER TYPE: VC

TIME: 10:39

SOUNDING: 13.0’ CORRECTED DEPTH: 12.0’

COORDINATES: N 41.967155 E -70.646336

PENETRATION/RECOVERY: 6.0/5.9’ NO. OF ATTEMPTS: 1

0-5.9’: (SP) Light to dark gray poorly graded fine sand. Densely packed throughout.

Core taken beyond project depth

Sample interval: 0-5.0’

Processed at 17:01

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: D SAMPLER TYPE: VC

TIME: 10:53

SOUNDING: 14.6’ CORRECTED DEPTH: 13.7’

COORDINATES: N 41.964668 E -70.648888

PENETRATION/RECOVERY: 4.0/3.9’ NO. OF ATTEMPTS: 1

0-3.9’: (SP) Light to dark gray poorly graded fine sand. Densely packed throughout.

Core taken beyond project depth

Sample interval: 0-3.2’

Processed at 17:11

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: E SAMPLER TYPE: VC

TIME: 11:09

SOUNDING: 12.3’ CORRECTED DEPTH: 11.1’

COORDINATES: N 41.960713 E -70.656981

PENETRATION/RECOVERY: 5.2/5.2’ NO. OF ATTEMPTS: 3

MATERIAL DESCRIPTION: Organic silt and fine sand

0-1.7’: (OL) Black organic silt. Loose and wet.

1.7-5.2’: (OL/SM) Dark olive gray organic silt and fine sand. Increasing sand content with depth. Soft and moist.

Core taken to refusal

Sample interval: 0-5.2’

Processed at 17:21

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: F SAMPLER TYPE: VC

TIME: 11:49

SOUNDING: 9.7’ CORRECTED DEPTH: 7.6’

COORDINATES: N 41.959762 E -70.660417

PENETRATION/RECOVERY: 8.0 /7.9’ NO. OF ATTEMPTS: 5

0-4.7’: (OL) Black organic silt. Soft and moist. Uniform throughout.

4.7-7.9’: (OL/SM) Dark olive gray organic silt and fine sand. Increasing sand content with depth. Soft and moist.

Core taken to refusal

Sample interval: 0-7.9’

Processed at 17:34

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: G SAMPLER TYPE: VC

TIME: 12:21

SOUNDING: 12.0’ CORRECTED DEPTH: 8.9’

COORDINATES: N 41.961049 E -70.663392

PENETRATION/RECOVERY: 7.8/7.8’ NO. OF ATTEMPTS: 3

MATERIAL DESCRIPTION: Organic silt

0-7.2’: (OL) Black organic silt. Soft and moist. Uniform throughout.

7.2-7.8’: (OL/SM) Dark olive gray organic silt and fine sand. Soft and moist.

Core taken to refusal

Sample interval: 0-7.8’

Processed at 17:49

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: H SAMPLER TYPE: VC

TIME: 12:39

SOUNDING: 11.4’ CORRECTED DEPTH: 7.7’

COORDINATES: N 41.962825 E -70.665779

PENETRATION/RECOVERY: 7.0/7.0’ NO. OF ATTEMPTS: 4

MATERIAL DESCRIPTION: Organic silt

0-7.0’: (OL) Black organic silt. Soft and moist. Uniform throughout.

Core taken to refusal

Sample interval: 0-7.0’

Processed at 18:05

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: I SAMPLER TYPE: VC

TIME: 13:10

SOUNDING: 9.1’ CORRECTED DEPTH: 4.4’

COORDINATES: N 41.963914 E -70.666003

PENETRATION/RECOVERY: 5.8/5.8’ NO. OF ATTEMPTS: 5

0-4.8’: (OL) Black organic silt. Soft and moist. Uniform throughout.

4.8-5.4’: (OL/SM) Dark olive gray organic silt and fine sand. Soft and moist.

5.4-5.8’: (CH) Olive gray clay. Very firm and moist.

Core taken to refusal – beyond project depth

Sample interval: 0-4.8’

Processed at 18:22

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: J SAMPLER TYPE: VC

TIME: 13:37

SOUNDING: 11.7’ CORRECTED DEPTH: 5.4’

COORDINATES: N 41.964271 E -70.663509

PENETRATION/RECOVERY: 3.5/3.4’ NO. OF ATTEMPTS: 2

0-2.5’: (OL) Black organic silt. Soft and moist. Uniform throughout.

2.5-3.4’: (OL/SM) Dark olive gray organic silt and fine sand. Soft and moist.

Core taken to project depth

Sample interval: 0-3.4’

Processed at 18:34

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: K SAMPLER TYPE: VC

TIME: 13:48

SOUNDING: 13.5’ CORRECTED DEPTH: 7.4’

COORDINATES: N 41.962569 E -70.663160

PENETRATION/RECOVERY: 4.0/4.0’ NO. OF ATTEMPTS: 2

0-3.2’: (OL) Black organic silt. Soft and moist. Uniform throughout.

3.2-4.0’: (OL/SM) Dark olive gray organic silt and fine sand. Soft and moist.

Core taken beyond project depth

Sample interval: 0-1.5’

Processed at 18:43

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: L SAMPLER TYPE: VC

TIME: 14:00

SOUNDING: 12.7’ CORRECTED DEPTH: 6.2’

COORDINATES: N 41.960979 E -70.659315

PENETRATION/RECOVERY: 4.0/4.0’ NO. OF ATTEMPTS: 1

0-1.3’: (OL) Black organic silt. Soft and moist. Uniform throughout.

1.3-4.0’: (OL/SM) Dark olive gray organic silt and fine sand. Soft and moist. Increasing firmness with depth

Core taken beyond project depth

Sample interval: 0-2.5’

Processed at 18:47

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: M SAMPLER TYPE: VC

TIME: 14:11

SOUNDING: 14.6’ CORRECTED DEPTH: 7.8’

COORDINATES: N 41.962171 E -70.658214

PENETRATION/RECOVERY: 3.5/3.4’ NO. OF ATTEMPTS: 1

0-2.0’: (OL) Black organic silt. Soft and moist. Uniform throughout.

1.3-3.4’: (OL/SM) Dark olive gray organic silt and fine sand. Soft and moist.

Core taken beyond project depth

Sample interval: 0-1.9’

Processed at 18:54