13b - Lab-Grain Size Wentworth Scale CCTL 8746 - EASTERN DEPOSITION BASIN.pdf
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- Solicitation number
- W912DS26BA022
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This is a particle size analysis laboratory report for soil testing conducted by Twin Peaks, a testing and inspection firm. The analysis was performed on beach sand samples from the Eastern Deposition Basin collected for the Fire Island and Shores Temporary Project (TPI), a U.S. Army Corps of Engineers dredging project managed by Norfolk Dredging Company under federal contract W912DS-24-C0014. The material was received on February 19, 2025, and analyzed on May 28, 2025, by technician G. Delos Santos.
The sieve analysis results indicate the beach sand sample is predominantly composed of medium sand (41.2% retained at No. 40 sieve, 0.42mm), with significant portions of fine sand (15.2% retained at No. 30 sieve, 0.59mm) and very coarse sand (3.9% retained at No. 16 sieve, 1.19mm). The material shows minimal fines content (0.1% passing No. 200 sieve), with coarse gravel comprising 0.0%, fine gravel 1.0%, and clay content at 0.1%. The sample had a moisture content of 22.1% upon receipt as determined by ASTM D2216. The grain size accumulation curve and detailed Wentworth classification provide comprehensive particle distribution data suitable for beach nourishment and coastal restoration engineering purposes.
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L-S9-1 Rev: 01/2025
The material from the above project, labeled as indicated in the sample
ID section above, was analyzed with the following results.
0.0% 1.4% 0.1%
1.0% 38.8% #REF!
58.7% 0.0%
% Coarse Sand % Fines
% Fine Sand % Colloids
% Medium Sand % Clay% Fine Gravel
% Coarse Gravel
G. Delos SantosTECHNICIAN:
MATERIAL
DESCRIPTION:
2/19/2025
PARTICLE SIZE ANALYSIS OF SOILS BY WENTWORTH SCALE
CLIENT NAME: 5/28/2025
CCTL NO. :
Norfolk Dredging Company DATE ANALYZED:
PROJECT NAME:
PROJECT ADDRESS:
TPI PROJECT NO.: W912DS-24-C0014 Fire Island and Shores
Fire Inland Inlet
2400370
Beach Sand (Eastern Deposition Basin) DATE RECEIVED:
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0.0010.010.1110100
Grain Size Accumulation Curve
P er ce n t P as si n g
Particle Size (mm)
L-S9-1 Rev: 01/2025
Percent Retained
0.0%
0.0%
0.0%
0.0%
0.0%
0.1%
0.5%
1.0%
1.0%
1.2%
2.1%
2.4%
3.9%
6.5%
15.2%
41.2%
86.4%
96.4%
99.8% 99.9% 99.9% 99.9%
Remarks: Material was sampled and delivered by the client
Moisture content of sample upon receipt is 22.1%, as determined by test method ASTM D2216
My P.E. seal must appear in blue ink only
Otherwise this document is null and void
5/28/2025
Date
New York City Qualification No. 3
Very fine sand
100.0%
0.1%NO. 200 (0.76 mm)
3/8 IN (9.5 mm)
13.6%
NO. 140 (0.11 mm) 0.1%
NO. 40 (0.42mm) 58.8%
97.6%
99.5%
100.0%
3/4 IN (19 mm) Large Pebble
Meddium Pebble
Small Pebble
Granule
Very coarse sand
Coarse sand
Medium sand
Fine sand
99.0%
1/2 IN (12.5 mm)
99.9%
0.2%
1/4 IN (6.3 mm)
Results obtained is limited only to the items inspected or tested. This report cannot be reproduced, except in full, without the prior written approval of Twin Peaks.
0.1%
98.8%
99.0%
96.1%
No. 8 (2.36 mm)
No. 6 (3.35 mm)
No. 5 (4.0 mm)
No 16 (1.19 mm)
84.8%
3.6%
All general information listed in this report, location and project where the test specimens were prepared is as provided to us by the Client. All reports are confidential property of the Client, and information contained herein may not be published or reproduced without our written approval.
93.5%
No. 30 ( 0.59 mm)
No. 60 ( 0.25mm)
97.9%
No. 10 (2.0 mm)
NO. 80 (0.18 mm)
NO. 50 (0.30 mm)
NO. 100 (0.15 mm)
No. 4 (4.75 mm)
No. 20 (0.84 mm)
100.0%
DATE RECEIVED:
Percent Passing
The material from the above project, labeled as indicated in the sample ID section above, was analyzed with the following results.
G. Delos Santos
MATERIAL
DESCRIPTION:
2/19/2025
TECHNICIAN:
Beach Sand (Eastern Deposition Basin)
PARTICLE SIZE ANALYSIS OF SOILS BY WENTWORTH SCALE
1 IN (25 mm)
Sieve Size
2 IN (50 mm)
1 1/2 IN (38.1 mm)
100.0%
Wenthworth Classification
100.0%
CLIENT NAME:
PROJECT
ADDRESS:
Fire Inland Inlet
SIEVE ANALYSIS
CCTL NO. :
5/28/2025
PROJECT NAME: W912DS-24-C0014 Fire Island and Shores TPI PROJECT NO.: 2400370
Norfolk Dredging Company DATE ANALYZED:
Very Large Pebble
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