Specs.pdf

Solicitation No.:

W912WJ20B0017

MAINTENANCE DREDGING

Rye Harbor Rye, New Hampshire

Construction Solicitation and Specifications

June 2020

MAINTENANCE DREDGING, RYE HARBOR SOLICITATION

RYE, NEW HAMPSHIRE

PROJECT TABLE OF CONTENTS

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

00 32 00 GEOTECHNICAL DATA

DIVISION 01 - GENERAL REQUIREMENTS

01 11 00 SUMMARY OF WORK

01 22 00 MEASUREMENT AND PAYMENT

01 33 00 SUBMITTAL PROCEDURES

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 00 QUALITY CONTROL

01 45 01 RESIDENT MANAGEMENT SYSTEM CONTRACTOR MODE (RMS CM)

01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

01 54 50 DREDGING PLANT AND EQUIPMENT

01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS

01 71 23 FIELD ENGINEERING FOR DREDGING

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 20 23 MECHANICAL DREDGING

35 20 24 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SCOW -

MONITORING PROFILE

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PROJECT TABLE OF CONTENTS Page 1

SECTION TABLE OF CONTENTS

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

SECTION 00 32 00

GEOTECHNICAL DATA

PART 1 GENERAL

1.1 SUMMARY

1.2 INTERPRETATION

PART 2 PRODUCTS

PART 3 EXECUTION

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DOCUMENT 00 32 00 Page 1

SECTION 00 32 00

GEOTECHNICAL DATA

PART 1 GENERAL

1.1 SUMMARY

The surface conditions indicated in the contract drawings and in the specifications are the result of site surveys, probes, borings, laboratory tests. Copies of the logs of explorations, laboratory test results, and locations at the site where subsurface investigations were performed can be found in the report attached at the end of this specification setion.

A summary of the subsurface materials expected to be encountered during dredging is specified in Section 35 20 23 MECHANICAL DREDGING under paragraph MATERIAL TO BE DREDGED.

1.2 INTERPRETATION

Subsurface investigation data are provided for informational purposes only and are for the convenience of the Contractor. The data shown in the report attached at the end of the specification section is for the specific locations indicated only and no assurance is given that these conditions are representative of conditions between borings or areas adjacent thereto. The responsibility lies with the Contractor to interpret subsurface conditions that may affect the Work.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

Not Used

-- End of Section --

DOCUMENT 00 32 00 Page 2

Sediment Sampling and Testing In Support Of Dredged Material Suitability Determination Final

Rye Harbor Federal Navigation Project Maintenance Dredging Rye, NH

December 2015

SEDIMENT SAMPLING AND TESTING

IN SUPPORT OF DREDGED MATERIAL

SUITABILITY DETERMINATION

RYE HARBOR FEDERAL NAVIGATION PROJECT

MAINTENANCE DREDGING

December, 2015

Prepared by:

Engineering/Planning Division Environmental Resources Section

U.S. Army Corps of Engineers New England District

Concord, Massachusetts i

TABLE OF CONTENTS

1.0 INTRODUCTION

2.0 Materials and Methods

2.1 Sample Collections

2.2 Sample Processing

3.0 PHYSICAL AND CHEMICAL TESTING

3.1 Quality Assurance/Quality Control Procedures

3.2 Measurement Quality Objectives

3.3 Chain of Custody

3.4 Data Audits/ QA Review

3.5 Protocol Deviations

4.0 RESULTS AND DISCUSSION

4.1 Rinsate Blank

TABLES

Table 1: Summary of Rye Harbor Sediment Collection Data Table 2: Sample Compositing Plan for Chemical Analysis Table 3: Analytical Methods and Reporting Limits Table 4: Measurement Quality Objectives Table 5: Summary of Grain Size and Moisture Content Results Table 6: Summary of TOC and Total Solids Results Table 7: Summary of Total Metals Results Table 8: Summary of PAH Results Table 9: Summary of PCB Results Table 10: Summary of Pesticides Results

FIGURES

Figure 2: Sample Locations

APPENDICES

APPENDIX A:

APPENDIX B:

SAMPLING AND ANALYSIS PLAN

SAMPLING LOGS

1.0 INTRODUCTION

Rye Harbor is a 40 acre estuarine embayment located in the town of Rye, New Hampshire. It is situated approximately 5 miles south of Portsmouth Harbor and 13 miles north of the Merrimack River. It is protected from the open ocean by two breakwaters which were constructed by the State of New Hampshire. The harbor is home to a small recreational and commercial fishing fleet. The boat ramp in the inner harbor is also a popular launching facility for recreational fishermen in the area. The authorized Federal Navigation Project (FNP) in Rye Harbor consists of a channel that is 100 feet wide and 10 feet deep at mean lower low water (MLLW), extending 600 feet through the entrance and then becoming 8 feet deep (MLLW) for another 1,700 feet to the State pier in the inner harbor. A 6 foot deep (MLLW), 5 acre anchorage is located to the north of the 8 foot channel, and an 8 foot deep (MLLW) anchorage of the same size is located to the south.

Rye Harbor was last dredged by the New England District (NAE) of the US Army Corps of Engineers in 1990 when approximately 55,375 cubic yards of mixed fine sand and silt were mechanically removed from the channel and anchorage areas. This material was placed at the Cape Arundel Disposal Site, located approximately 22 nautical miles northeast of the project area.

NAE is currently proposing to mechanically dredge approximately 50,000 cubic yards of mixed fine sand and silt from shoaled areas totaling 14 acres within the channel and anchorages of the Rye Harbor FNP. This area will be dredged to the authorized project depth plus 1 foot of allowable overdepth. It is expected that this material will be disposed of at either the Cape Arundel Disposal Site or the Isles of Shoals North Disposal Site.

The purpose of the sampling effort described in this report was to collect sediment cores from 9 locations within the proposed dredge area in order to evaluate suitable disposal options. The sampling effort was conducted in accordance with the sampling and analysis plan (SAP) (Appendix A) dated March 18, 2015 that was developed by the Environmental Resources Section (ERS) of NAE, and coordinated with State of New Hampshire Department of Environmental Services (NHDES), the National Marine Fisheries Service (NMFS), and the United States Environmental Protection Agency (EPA) Region 1. This report describes the field methods employed, site conditions encountered, and results of physical and chemical analysis.

2.0 MATERIALS AND METHODS

Sediment sampling efforts were conducted on July 9, 2015. Work was carried out onboard the R/V Gloria H., a 24 foot pontoon style workboat outfitted with an a-frame and electric winch for sampling through a moon pool located in the center of the vessel.

A three point anchor system was used to hold the boat in position while sampling.

Positioning was achieved using a WAAS enabled Simrad NSS7 sonar/chart plotter with external LGC-4000 GPS receiver antenna, and verified with a Trimble GeoXM

Differential Global Positioning System (DGPS), both with an accuracy of 3 meters or less. Depth measurements were made using the Simrad unit and 50/200 kHz transducer with lead line verification. Tidal corrections to Mean Lower Low Water (MLLW) were made using data for the Jaffrey Point tide station, accessed in the field through the tides and currents feature of Navionics Mobile software.

2.1 Sample Collections

Sediment cores were collected to project depth (authorized depth plus one foot of overdepth) or refusal from all 9 sample stations (Figure 1) using a Navco pneumatic vibracorer and 2.75” i.d. polycarbonate tubing. Upon collection the cores were secured in an upright position and allowed to settle before being processed on board the sampling vessel. Sampling equipment was cleaned with a brush and alconox solution then rinsed with site water prior to sampling and between each sample station. The core liners were assumed to be clean as-received from the supplier but were rinsed in site water prior to use.

Water depths in the vicinity of the sample locations ranged from 4 to 8 feet MLLW. No significant deviations from the 2014 project conditions survey were noted. The material in the 10 foot entrance channel was predominantly gray, poorly graded medium to fine sand. Sediments in the 8 foot channel, as well as the 6 and 8 foot anchorages, consisted of dark gray, silt and fine sand. Sediment collection data is summarized in Table 1.

Sampling logs are presented in Appendix B.

Table 1: Summary of Rye Harbor Sediment Collection Data

Station

ID

Latitude

(NAD 83)

Longitude

(NAD 83)

Time

(EDT)

Corrected Water Depth

(FT MLLW)

Penetration/ Recovery

(FT)

Attempts

A -70.745434 42.999925 9:34 8.3 3.7 2

B -70.747667 43.000612 9:53 6.8 3 2

C -70.749840 43.001350 10:08 4.5 4.4 1

D -70.751137 43.001885 10:27 4.0 4.5 1

E -70.746528 43.000746 10:40 5.3 2.8 1

F -70.748211 43.001634 10:53 3.9 4.7 2

G -70.747358 42.999709 11:14 4.9 4.9 2

H -70.748164 43.000291 11:30 5.1 5.2 1

I -70.749142 43.000289 11:42 4.9 5.3 1

2.2 Sample Processing

Sample processing took place on board the R/V Gloria H. concurrently with the sampling effort.

Upon collection, the cores were secured in an upright position and allowed to settle. After settling, the cores were measured, and clear excess water was carefully drained from the top of the core tube by drilling a small hole in the liner above the water/sediment interface. Measured cores were placed horizontally into a PVC trough and secured by hand. Each core liner was cut lengthwise using electric shears in two places, approximately 180° apart, and clean stainless steel wire was then used to slice the length of the core into two halves. Immediately after a core was split and exposed to the atmosphere, it was photographed, described, and transferred into a stainless steel pan for sampling. Sample processing equipment was cleaned with a brush and alconox solution then rinsed with deionized water prior to sampling and between each sample.

Each split core was photographed before undergoing the description process. All core photos included a stadia rod for scale and for referencing the depth below surface. A photograph of the complete core was taken, as well as close-ups of discrete layering down core, and sediment strata horizons/transitions of interest.

Cores were examined from the top of the core, downward to the bottom, using a stadia rod to define sediment layer thicknesses and depth below the surface (top of core at sediment–water interface). Each core was classified in accordance with ASTM D 2488, Standard Practice for Description and Identification of Soils (Visual-Manual Procedure), and notes on relative grain sizes, color, odor, strata, and other pertinent observations were recorded in the environmental sampling logs (Appendix B).

After being described, the material from each core was transferred into a stainless steel pan and homogenized using stainless steel spatulas and spoons. Representative portions from all 9 core samples were placed in clean zip-loc bags to be analyzed for grain size, total solids, and percent moisture. The remaining material from samples that were determined to be visually and texturally similar during the classification process were composited according to the preliminary compositing plan (Table 2) developed by ERS. Material from samples to be composited was combined in a stainless steel pan and re-homogenized using clean stainless steel spatulas and spoons. Representative portions from each composite were placed into appropriate sample containers to be analyzed for the parameters listed in Table 3.

One equipment blank was collected as part of this sampling effort. The blank was collected by pouring several liters of deionized water through a length of clean core tube and into a sample processing pan containing a spoon and spatula used for sample homogenization and transfer.

This water was then decanted into the appropriate sample jars.

All samples were maintained in coolers on ice for the duration of sampling activities and delivered to Alpha Analytical Laboratory in Mansfield, MA upon conclusion of the field sampling effort.

Figure 1: Sample Locations Figure 1-B: Sample Locations Figure 1-C: Sample Locations Figure 1-D: Sample Locations Figure 1-E: Sample Locations Figure 1-F: Sample Locations

Table 2: Sample Compositing Plan for Chemical Analysis

Station

ID

Composite Group

A 1 B 2 C 2 D 2 E 3 F 3 G 4 H 4 I 4

3.0 PHYSICAL AND CHEMICAL TESTING

This section summarizes the analytical methods used for physical and chemical testing of the samples collected from the Rye Harbor FNP in Rye, NH. All testing was performed by Alpha Analytical Laboratory in Mansfield, MA. Physical testing included grain size analysis, total solids, and percent moisture measurements. Chemical analysis included total organic carbon (TOC), metals analyses, polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCBs), and pesticides. A complete list of parameters and target detection limits is provided in Table 3. A routine set of quality control (QC) samples was prepared with each set of samples, by parameter and media, to monitor data quality in terms of accuracy and precision.

Table 3: Analytical Methods and Reporting Limits

Parameter Method

Reference Method Number

Project Required RL

RL

Units

Physical Tests Total Solids/Water Content ASTM D-2216 1.0 % Grain Size (#4, 10, 40, 200) ASTM D-422 N/A % Total Organic Carbon (TOC) Total Organic Carbon SW-846 9060 0.1 % Metals Arsenic SW 846 6020A 0.4 ppm Cadmium SW 846 6020A 0.07 ppm Chromium SW 846 6020A 0.5 ppm Copper SW 846 6020A 0.5 ppm Lead SW 846 6020A 0.5 ppm Mercury SW 846 7474 0.02 ppm Nickel SW 846 6020A 0.5 ppm Zinc SW 846 6020A 1.0 ppm Polychlorinated Biphenyls (PCBs)

Congeners 8, 18, 28, 44, 49, 52, 66, 87, 101, 105, 118, 128, 138, 153, 170, 180, 183, 184, 187, 195, 206, 209

SW-846 8082 0.001 ppm

Semivolatiles Poly-Aromatic Hydrocarbons SW-846 8270C-SIM 0.01 ppm Organochlorine Pesticides Pesticides SW-846 8081B 0.001 ppm

3.1 Quality Assurance/Quality Control Procedures

All field and analytical activities used in the collection and analysis of sediments for physical and chemical testing followed approved SOPs, referenced approved agency methods, or are detailed in the project SAP (Appendix A).

3.1.1 Measurement Quality Objectives

Project specific Measurement Quality Objectives (MQOs), against which all data from this project were evaluated, are presented in Table 4. Physical and chemical data were evaluated against the MQOs and the laboratory based reporting limits. Organic compounds and metals analyzed for but not detected above the laboratory Practical Quantitation Limit (PQL) were recorded as the Reporting Limit (RL) and flagged with the qualifier “U”.

Table 4: Measurement Quality Objectives

QC Parameter Measure of Acceptance Criteriaa Corrective Action

Sediment and Water Chemistry

Blank: <5xMDL (or<5xMDL for metals)

Reextract, reanalyze, and/or document and justify corrective actions

Accuracy: Lab Control Sample

(LCS)

Organics: 30-130% Recovery Metals:80-120% Recovery

As above

Accuracy: Matrix Spike/Matrix spike Duplicate

Organics: 50-120% Recovery

Metals: 75 to 125% Recovery

As above

Accuracy: Standard Reference Material (SRM)

Must be within limits provided by the vendor (i.e. for organics, 40-140% recovery from certified concentrations for SRM 1944)

Evaluate LCS, MS/MSD & surrogates in sample, reanalyze if necessary, qualify data and issue narrative

Accuracy: Surrogate Internal Standard (SIS)

Organics: 30-150% Recovery Reextract, reanalyze, and/or document and justify corrective actions

Precision Replicates: MS/MSD: ≤30% RPDb between % recoveries Sample Duplicate: ≤30% RPDc between values

TOC: RPD ≤25%

Grain Size: RPD <25%

As Above

MDL = method detection limit: RPD = relative percent difference a Quality control samples are based on analytical batch size of 20 b Analyte concentration in MS must be >5x background concentration to be used for data quality assessment

3.1.2 Chain of Custody

Sample custody forms accompanied all samples from the field to the laboratory.

3.1.3 Data Audits/ QA Review

All data received internal verification and validation following established procedures at the laboratory where the data were generated. These narratives include a discussion of the chemistry QC results, a description of MQO exceedances, and the impact, if any, the exceedances may have on the overall field sample data.

3.1.4 Protocol Deviations

There were no deviations from the established laboratory testing protocols.

4.0 RESULTS AND DISCUSSION

This section summarizes results obtained from physical and chemical testing of sediments and a rinsate blank sample collected from the Rye Harbor FNP in Rye, NH in July of 2015. Sediment samples from 9 individual stations were analyzed for grain size, total solids, and percent moisture. Based on the results of this physical analysis, the 4 composite groups described in section 2.2 as well as the rinsate blank were analyzed for metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and pesticides. A summary of the results of physical and chemical analysis are presented in Tables 5 through 10.

Table 5: Summary of Grain Size and Moisture Content Results

Sample ID % Cobble

Gravel

Coarse Sand

Medium

Sand

% Fine Sand

% Total Fines

Moisture

A 0.1 (U) 0.1 (U) 0.5 2.4 88.6 8.5 21.8 B 0.1 (U) 0.1 (U) 0.1 (U) 0.9 28.1 71 40.4 C 0.1 (U) 0.1 (U) 0.1 (U) 1.4 60.2 38.3 39.4 D 0.1 (U) 0.1 (U) 0.1 1.2 20.2 78.5 56.5 E 0.1 (U) 0.1 (U) 0.1 (U) 0.8 48.4 50.8 41.7 F 0.1 (U) 0.1 (U) 0.1 0.9 52.8 46.2 40 G 0.1 (U) 0.1 (U) 0.1 1.1 34.2 64.6 41.7 H 0.1 (U) 0.1 (U) 0.1 (U) 0.7 13.8 85.5 55.5 I 0.1 (U) 0.1 (U) 0.1 (U) 1.2 23.5 75.3 56.7

U = Non-detected analytes are reported as the RL and qualified with a “U”.

Table 6: Summary of TOC and Total Solids Results

Sample ID % TOC Average Value % Total Solids

COMP A 0.319 78.9

COMP BCD 2.045 54.3

COMP EF 1.63 61.4

COMP GHI 3.34 46.1

Table 7: Summary of Total Metals Results

Parameter COMP A COMP BCD COMP EF COMP GHI

Arsenic, Total 1.27 4.8 3.97 6.9 Cadmium, Total 0.101 0.45 0.344 0.71 Chromium, Total 13.5 34.3 28.6 45.9

Copper, Total 3.43 14.5 10.3 19.7 Lead, Total 5.61 16.2 13 24.3

Mercury, Total 0.083 0.068 0.316 0.11 Nickel, Total 7.23 17.3 14.3 23.2 Zinc, Total 17.7 52 41.3 71.6

U = Non-detected analytes are reported as the RL and qualified with a “U”.

All concentrations are presented as mg/kg Results are reported as dry weight

Table 8: Summary of PAH Results

Acenaphthene 28.6 7.3 (U) 9.33 9.3 Acenaphthylene 28.4 13.8 14.1 18.9

Anthracene 297 32.8 70.4 69.8 Benz(a)anthracene 535 110 170 198

Benzo(a)pyrene 475 118 167 200 Benzo(b)fluoranthene 411 118 148 178 Benzo(ghi)perylene 260 75.8 99.8 124

Benzo(k)fluoranthene 345 95.2 130 162 Chrysene 452 120 166 195

Dibenz(a,h)anthracene 66.1 17.5 25.9 30.8 Fluoranthene 1180 257 377 416

Fluorene 71.1 11.6 19.3 22.3 Indeno(1,2,3-cd)Pyrene 323 89.2 123 147

Naphthalene 25.2 10.7 11.7 15.4 Phenanthrene 672 92.2 174 190

Pyrene 836 197 291 330

U = Non-detected analytes are reported as the RL and qualified with a “U”.

All concentrations are presented as µg/kg

Table 9: Summary of PCB Results

Cl2-BZ#8* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl3-BZ#18* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl3-BZ#28* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl4-BZ#44* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl4-BZ#49 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U)

Cl4-BZ#52* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl4-BZ#66* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl5-BZ#87 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U)

Cl5-BZ#101* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl5-BZ#105* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl5-BZ#118* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl6-BZ#128* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl6-BZ#138* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl6-BZ#153* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl7-BZ#170* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl7-BZ#180* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl7-BZ#183 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl7-BZ#184 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl7-BZ#187* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl8-BZ#195* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Cl9-BZ#206* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U)

Cl10-BZ#209* 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Total PCBs1 15.81 12.41 10.71 13.43

Results are reported as dry weight 1 Total PCBs calculated by summing the 18 PCB congeners marked with a “*” (using ½ the RL for non-detects) and multiplying the total by 2

Table 10: Summary of Pesticides Results

4,4'-DDD 4.67 (U) 3.65 (U) 3.15 (U) 3.99 (U)

4,4'-DDE 4.67 (U) 3.65 (U) 3.15 (U) 3.99 (U)

4,4'-DDT 4.67 (U) 3.65 (U) 3.15 (U) 3.99 (U)

Aldrin 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U) cis-Chlordane 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U) cis-Nonachlor 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U)

Dieldrin 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U) Endosulfan I 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U) Endosulfan II 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U)

Endrin 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U) gamma-BHC 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U) Heptachlor 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U)

Heptachlor epoxide 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U) Hexachlorobenzene 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U)

Methoxychlor 46.7 (U) 36.5 (U) 31.5 (U) 39.9 (U) Oxychlordane 0.934 (U) 0.73 (U) 0.63 (U) 0.798 (U)

Toxaphene 23.4 (U) 18.3 (U) 15.8 (U) 20 (U) trans-Chlordane 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U) trans-Nonachlor 0.467 (U) 0.365 (U) 0.315 (U) 0.399 (U)

4.1 Rinsate Blank

One rinsate blank sample consisting of deionized water that was exposed to an unused section of core liner and the decontaminated sample processing equipment was analyzed for metals, PAHs, PCBs, and pesticides. Concentrations of the PAH Naphthalene (0.026 µg/l) were present in the rinsate blank. This concentration was several orders of magnitude lower than what was found in the sediments from the Rye Harbor FNP, therefore no corrective action was taken. No other target analytes were detected in the rinsate blank sample.

APPENDIX A SAMPLING AND ANALYSIS PLAN

CENAE–EP-V 18 March 2015

MEMORANDUM FOR: Edward O’Donnell, Project Manager, CENAE-PP-P-N

SUBJECT: Sampling and Analysis Plan for the Rye Harbor Federal Navigation Project, Rye, New Hampshire.

1. Background: The New England District (NAE) of the US Army Corps of Engineers (USACE) is proposing to mechanically dredge approximately 50,000 cubic yards of fine sand and silty material from shoaled areas totaling 14 acres within the channel and anchorages of the Rye Harbor Federal Navigation Project (FNP) located in Rye, NH. This area will be dredged to the authorized project depth plus 1 foot of allowable overdepth. It is expected that this material will be disposed of at the Cape Arundel Disposal Site (CADS).

The purpose of the sampling and analysis plan described below is to gather information to support a suitability determination for the proposed disposal option. This sampling and analysis effort will be divided into two phases: first sampling and testing of dredge site sediment for grain size and bulk sediment chemistry, and then sampling and testing of dredge and reference site sediment and water for biological impacts.

2. Methodology: All sampling and analysis activities shall follow the requirements set forth in the “Regional Implementation Manual for the Evaluation of Dredged Material Proposed for Disposal in New England Waters" (RIM) dated May 6, 2004. All laboratories used for this project must have an approved Laboratory Quality Assurance Plan (LQAP) on file with NAE. Any data produced from a lab without an approved LQAP will not be accepted. The RIM, a list of laboratories with approved LQAPs, and the reporting format and requirements for electronic submission of data are available for download through the NAE website:

http://www.nae.usace.army.mil/Missions/Regulatory/DredgedMaterialProgra m/RegionalImplementationManual.aspx

3. Known Sources of Contamination: Based on a review of historic data and communication with local officials it has been determined that there are no known outfalls or recent spills in the vicinity of the project area.

4. Sample Collection: In the first phase of testing, sediment cores shall be taken from the areas to be dredged at the 9 locations specified in Table 1 (also see Figure 1). Core samples shall be taken to the proposed dredge depth plus the overdepth amount or refusal. The cores shall be inspected in the field for stratification. If the cores show significant stratification, in the opinion of the sampling crew, subsamples shall be made of each layer. Sufficient material http://www.nae.usace.army.mil/Missions/Regulatory/DredgedMaterialProgram/RegionalImplementationManual.aspx http://www.nae.usace.army.mil/Missions/Regulatory/DredgedMaterialProgram/RegionalImplementationManual.aspx

CENAE-EP-V

shall be collected for grain size and bulk sediment chemistry analyses as described in the sections below.

In the second phase of testing, sufficient amounts of sediment and water shall be collected at the same 9 dredge site locations for water column toxicity testing, 10-day whole sediment toxicity testing, and 28-day bioaccumulation testing. Water samples shall be taken to represent the top, middle, and three feet from bottom depth ranges at each sample location. In addition, reference site sediment and water shall be collected from the CADS Reference Site located at latitude 43.29842 and longitude -70.43316. Chemical analyses shall be performed on the elutriate samples prepared from the dredge area water and sediments, the reference site water used in the suspended particulate assay, and the reference site sediment according to the sections below.

All sediment and water being held for testing shall be stored in accordance with the requirements in Table 2 (from Table 8-2 in Evaluation of Dredged Material Proposed for Ocean Disposal, Testing Manual, 1991).

5. Positioning: The latitude and longitude for each sample location shall be reported in the Geographic NAD 83 coordinate system in degree decimal minute format. The horizontal accuracy of each sample location shall be ten feet or less. The horizontal accuracy at each sample location shall be reported along with the coordinates.

6. Grain Size: Each core or core layer from the dredge site shall be individually analyzed for grain size and the results reported to the Environmental Resources Section (ERS) project technical manager before any compositing is performed. The final compositing plan will be determined based on sample proximity, sediment type, and physical characteristics. Grain size analysis shall also be performed on the reference site sample. The results of physical analysis may be used to support compliance with one or more of the three exclusionary criteria in 40 CFR 227.13(b) for ocean disposal or support a determination that the material is not a carrier of contaminants under 40 CFR 230.60(a) for other open water disposal.

7. Sediment Chemistry: Bulk sediment chemistry shall be performed on the dredge area sediment samples according to the final compositing plan.

Bulk sediment chemistry shall also be performed on the reference site sample.

Testing parameters, analytical methods, and reporting limits to be used are outlined in Table 2 (Extracted from Tables 1, 2, and 3 of the RIM). The listed analytical methods are recommended but can be replaced by other methods that will give the required reporting limits. The Total Organic Carbon analysis (TOC) shall be performed in duplicate on each composited sample and a TOC Standard Reference Material (SRM) shall be run with the sample batch.

Additional guidance on the physical and chemical analysis of sediments can be found in Chapter 5 of the RIM.

8. Water Chemistry: Elutriate samples shall be prepared from the dredge area water and sediments according to the final compositing plan. The elutriate samples and reference site water shall undergo chemical analyses according to the testing parameters, analytical methods, and reporting limits outlined in Table 3. The listed analytical methods are recommended but can be replaced by other methods that will give the required reporting limits. Additional guidance can be found in Chapter 6 of the RIM and Section 9.4 of Evaluation of Dredged Material Proposed for Ocean Disposal, Testing Manual, 1991.

9. Water Column Toxicity Testing: The suspended phase particulate bioassay shall be performed in accordance with the requirements of the following two documents: “Regional Implementation Manual for the Evaluation of Dredged Material Proposed for Disposal in New England Waters” (April 2004) and Evaluation of Dredged Material Proposed for Ocean Disposal, Testing Manual, 1991. This test can be started at the same time as the 28-day bioaccumulation and bulk sediment chemistry tests. Three test species shall be used: a crustacean; a fish; and the planktonic larvae of a third species. We recommend Mysidopsis bahia; Menidia menidia or Menidia beryllina; and larvae of either Mytilus edulis or Arbacia punctulata.

10. 10-Day Whole Sediment Toxicity Testing: The 10-day whole sediment toxicity test shall be performed in accordance with the requirements of the following three documents: “Regional Implementation Manual for the Evaluation of Dredged Material Proposed for Disposal in New England Waters” (April 2004); Evaluation of Dredged Material Proposed for Ocean Disposal, Testing Manual, 1991; and Methods for Assessing the Toxicity of Sediment- Associated Contaminants with Estuarine and Marine Amphipods, 1994. The bioassay test shall use two species of test animals, the amphipod Ampelisca abdita and the mysid shrimp Americamysis bahia.

The results of the 10-day toxicity test shall be reported to the Environmental Resources Section (ERS) project technical manager or Marine Analysis Section (MAS) as soon as possible after its completion. If this test shows a statistically significant mortality, in accordance with the above documents, NAE may decide to cancel the further testing.

11. 28-Day Bioaccumulation Testing: The 28-day bioaccumulation test shall be performed in accordance with the requirements of the following two documents: “Regional Implementation Manual for the Evaluation of Dredged Material Proposed for Disposal in New England Waters” (April 2004) and Evaluation of Dredged Material Proposed for Ocean Disposal, Testing Manual, 1991. The bioaccumulation test shall use a bivalve, either Macoma nasuta or Macoma balthica, and the polychaete Nereis virens as test animals. At the end of the 28–day test, the tissues of the survivors shall be tested for the contaminants of concern according to Table 9 of the “Regional Implementation Manual for the Evaluation of Dredged Material Proposed for Disposal in New England Waters” (April 2004). The contaminants of concern will be determined from the above mentioned bulk sediment chemistry tests.

12. Reporting: All sediment testing data is required to be submitted electronically in the electronic data deliverable (EDD) format available on the RIM website. Hard copy data submission is also required but may be substituted with a printer friendly, easy-to-read format (e.g., PDF, MS Word).

Any analytes not detected shall be reported as the reporting limit and qualified with a “U”. Non-detects shall not be reported as the method detection limit (MDL). RIM quality control summary tables are required to be submitted with each project dataset. These tables are found in Appendix II of the RIM and are available on the RIM website

13. Any questions should be directed to Richard Loyd (978-318-8048).

Prepared by:

RICHARD B. LOYD

Marine Ecologist Environmental Resources Section

TABLE 1: SAMPLE LOCATIONS AND ESTIMATED PENETRATION

Station X

(NAD 83)

Y

(NAD 83)

Survey Depth (Feet

MLLW)

Project Depth (Feet

MLLW)

Allowable Overdepth

(Feet)

Estimated Core Length

(Feet)

A -72.352840 41.290652 -4.6 -11.0 -1.0 7.4 B -72.353843 41.290315 -4.4 -11.0 -1.0 7.6 C -72.359839 41.290271 -3.4 -11.0 -1.0 8.6 D -72.359737 41.289353 -3.3 -11.0 -1.0 8.7 E -72.361918 41.289977 -3.7 -11.0 -1.0 8.3 F -72.361773 41.288994 -3.3 -11.0 -1.0 8.7 G -72.363362 41.289779 -4.8 -6.0 -1.0 2.2 H -72.363141 41.288902 -3.8 -6.0 -1.0 3.2 I -72.364840 41.289118 -4.3 -6.0 -1.0 2.7 J -72.366754 41.289506 -4.5 -6.0 -1.0 2.5 K -72.366610 41.288272 -4.9 -6.0 -1.0 2.1

SUBJECT: Sampling and Analysis Plan for the Rye Harbor Federal Navigation Project, Rye, New Hampshire.

Table 2: RECOMMENDED PROCEDURES FOR SAMPLE COLLECTION, PRESERVATION, AND STORAGE

Analyses Collection

Method Sample Volume Container Preservation Technique

Storage Conditions Holding Timed

Sediment Chemical/Physical Analyses

Metals Grab/corer 200 mL Precleaned polyethylene jarc Dry icec ≤ 20° Cc

Hg - 30 days Others - 6 Monthsd

Organic Compounds Grab/corer 475 mL Solvent-rinsed glass jar with Teflon lidc Dry icec ≤ 20° C/darkd 10 daysd

Particle Size Grab/corer 75 mL Whirl-pac bagc Dry icec ≤ 20° Cc Undetermined

Total Organic Carbon Grab/corer 3 L Heat treated glass vial with Teflon lined lidc

Dry ice or freezer storage for extended storages; otherwise refrigerate

≤ 20° Cc Undetermined

Sediment From Which Elutriate is Prepared

Grab/corer Dependant on tests performed

Glass with Teflon lined lid

Completely fill and Refrigerate

≤ 4° C/dark/airtight Undetermined

Biological Tests

Dredged Material Grab/corer 12-15 L per sample

Plastic bag or containere

Completely fill and Refrigerate; sieve

≤ 4° C/dark/airtight 14 daysi

Reference Sediment Grab/corer 45-50 L per test Plastic bag or containere

Completely fill and Refrigerate; sieve

≤ 4° C/dark/airtight 14 daysi

Control Sediment Grab/corer 21-25 L per test

Plastic bag or containere

Completely fill and Refrigerate; sieve

≤ 4° C/dark/airtight 14 daysi

Water and Elutriate Chemical/Physical Analyses

Particulate Analysis

Discrete sampler or pump

500-2,000 mL Plastic or glass Lugols solution and refrigerate 4° C Undetermined

SUBJECT: Sampling and Analysis Plan for the Rye Harbor Federal Navigation Project, Rye, New Hampshire.

Table 2: RECOMMENDED PROCEDURES FOR SAMPLE COLLECTION, PRESERVATION, AND STORAGE (CONTINUED)

Metals Discrete sampler or pump 1 L

Acid-rinsed polyethylene or glass jar pH <2 with HNO3d 4° C 2° Cd Hg - 28 days Others - 6 Monthsh

Total Kjeldahl Nitrogen (TKN)

Discrete sampler or pump 100-200 mL Plastic or glassh H2SO4 to pH <2; refrigerateh 4° Ch 24 hh

Chemical Oxygen Demand (COD)

Discrete sampler or pump 200 mL Plastic or glassh H2SO4 to pH <2; refrigerateh 4° Ch 7 daysh

Total Organic Carbon (TOC)

Discrete sampler or pump 100 mL Plastic or glassh H2SO4 to pH <2; refrigerateh 4° Ch < 48 hoursh

Total Inorganic Carbon (TIC)

Discrete sampler or pump 100 mL Plastic or glassh Airtight seal; refrigerateh 4° Ch 6 monthsh

Phenolic Compounds

Discrete sampler or pump 1 L Glassh 0.1-1.0 g CuSO4; H2SO4 to pH <2; refrigerateh 4° Ch 24 hoursh

Soluble Reactive Phosphates

Discrete sampler or pump - Plastic or glassh Filter; refrigerateh 4° Ch 24 hoursh

Organics Discrete sampler or pump 4 L Amber glass bottled Airtight seal; refrigerate 4° C 2° Cd 5 daysd

Volatile Organic Compounds

Discrete sampler or pump 80 mL Glass viald pH < 2 with 1:1 HCl;

refrigerate in airtight, completely filled containerd

4° C 2° Cd 5 daysd

Total Phosphorous

Discrete sampler or pump - Plastic or glasse Refrigerate 4° Ch 7 daysh

Total Solids Discrete sampler or pump 200 mL Plastic or glassh Refrigerate 4° Ch 7 daysh

Volatile Solids Discrete sampler or pump 200 mL Plastic or glassh Refrigerate 4° Ch 7 daysh

Sulfides Discrete sampler or pump - Plastic or glassh 2 mLZnOAch Ambienth 24 hoursh

SUBJECT: Sampling and Analysis Plan for the Rye Harbor Federal Navigation Project, Rye, New Hampshire.

Table 2: RECOMMENDED PROCEDURES FOR SAMPLE COLLECTION, PRESERVATION, AND STORAGE (CONTINUED)

Tissue

Metals Trawl/ Teflon coated grab 30 g Double Ziplocc

Handle with non-metallic forceps; plastic gloves; dry icec

≤ -20° CC

Hg - 14 days Others - 6 monthsi

PCBs and Chlorinated Pesticides

Trawl/ Teflon coated grab 100 g

Hexane-rinsed double aluminum foil and double Ziplocc

Handle with hexane-rinsed stainless steel forceps; dry icec

≤ -20° CC 10 daysi

Volatile Organic Compounds

Trawl/ Teflon coated grab 50 g

Heat cleaned aluminum foil and water tight plastic bagi

Covered ice chestd ≤ -20° Ci 10 daysi

PAHs Trawl/ Teflon coated grab 50 g

Hexane-rinsed double aluminum foil and double Ziplocc

Handle with hexane-rinsed stainless steel forceps; dry icec

≤ -20° Ci 10 daysi

Lipids Trawl/ Teflon coated grab 50 g Hexane-rinsed aluminum foil

Handle with hexane-rinsed stainless steel forceps; quick freeze

20° C Undetermined a This table contains only a summary of collection, preservation, and storage procedures for samples. The cited references should be consulted for a more detailed description of these procedures.

b These holding times are for sediment, water, and tissue based on guidance that is sometimes administrative rather than technical in nature. There are no promulgated, scientifically based holding time criteria for sediments, tissues, or elutriates. References should be consulted if holding times for sample extracts are desired. Holding times are from the time of sample collection.

c NOAA (1989).

d Tetra Tech (1986a) e Polypropylene should be used if phthalate bioaccumulation is of concern.

f Two weeks is recommended; sediments must not be held for longer than 8 weeks prior to biological testing.

g NOAA (1989).

h Plumb (1981).

i Tetra Tech (1986b)

SUBJECT: Sampling and Analysis Plan for the Rye Harbor Federal Navigation Project, Rye, New Hampshire.

TABLE 3: BULK SEDIMENT TESTING PARAMETERS

Parameter Analytical Reporting Method Limit (ppm) Metals Arsenic 6010B, 6020, 7060, 7061 0.4 Cadmium 6010B, 6020, 7130, 7131 0.07 Chromium 6010B, 6020, 7190, 7191 0.5 Copper 6010B, 6020, 7210 0.5 Lead 6010B, 6020, 7420, 7421 0.5 Mercury 7471 0.02 Nickel 6010B, 6020, 7520 0.5 Zinc 6010B, 6020, 7950 1.0

PCBs (total by NOAA summation of congeners) See next page 8082A 0.001

Pesticides NOAA (1993), 8081B 0.001 Aldrin Heptachlor epoxide cis- & trans-Chlordane Hexachlorobenzene 4,4’-DDT, DDD, DDE Lindane Dieldrin Methoxychlor α & β Endosulfan cis- & trans-Nonachlor Endrin Oxychlordane Heptachlor Toxaphene 0.025

Polycyclic Aromatic Hydrocarbons 8270C-SIM 0.01 (PAHs) Acenaphthene Chrysene Acenaphthylene Dibenzo(a,h)anthracene Anthracene Fluoranthene Benzo(a)anthracene Fluorene Benzo(a)pyrene Indeno(1, 2, 3-cd)pyrene Benzo(b)fluoranthene Naphthalene Benzo(k)fluoranthene Phenanthrene Benzo(g, h, i)perylene Pyrene

Total Organic Carbon Plumb (1981), APHA (1995) 0.1%

Percent Moisture Plumb (1981), EPA (1992), PSEP (1986) 1.0%

Grain Size Wet Sieve (#4, 10, 40, 200)

TABLE 3: BULK SEDIMENT TESTING PARAMETERS (CONTINUED)

PCB CONGENERS

Analytical Method: NOAA (1993), 8082A

Reporting Limit: 1 ppb

Congeners:

8* 2,4’ diCB 18* 2,2’,5 triCB 28* 2,4,4’ triCB 44* 2,2’,3,5’ tetraCB 49 2,2’,4’,5 tetraCB 52* 2,2’,5,5’ tetraCB 66* 2,3’,4,4’ tetraCB 87 2,2’,3,4,5’ pentaCB 101* 2,2’,4,5,5’ pentaCB 105* 2,3,3’,4,4’ pentaCB 118* 2,3’,4,4’,5 pentaCB 128* 2,3,3’,4,4’ hexaCB 138* 2,2’,3,4,4’,5’ hexaCB 153* 2,2’,4,4’,5,5’ hexaCB 170* 2,2’,3,3’,4,4’,5 heptaCB 180* 2,2’,3,4,4’,5,5’ heptaCB 183 2,2’,3,4,4’,5’,6 heptaCB 184 2,2’,3,4,4’,6,6’ heptaCB 187* 2,2’,3,4’,5,5’,6 heptaCB 195* 2,2’,3,3’,4,4’,5,6 octaCB 206* 2,2’,3,3’,4,4’,5,5’,6 nonaCB 209* 2,2’,3,3’,4,4’,5,5’,6,6’ decaCB

* denotes a congener to be used in estimating Total PCB. To calculate Total PCB, sum the concentrations of all eighteen congeners marked with a “*” and multiply by 2.

The specified methods are recommendations only. Other acceptable methodologies capable of meeting the Reporting Limits can be used. Sample preparation methodologies (e.g.

extraction and cleanup) and sample size may need to be modified to achieve the required Reporting Limits.

TABLE 4: ELUTRIATE TESTING PARAMETERS

Parameter Recommended Analytical Reporting Method Limit (μg/L) Metals Arsenic 200.9, 1632 1.0 Cadmium 200.9, 1637 1.0 Chromium (VI) 218.6, 1636 1.0 Copper 200.9, 1639, 1640 0.6 Lead 200.9, 1639, 1640 1.0 Mercury 245.7, 1631 0.4 Nickel 200.9, 1639, 1640 1.0 Selenium 200.9, 1639 1.0 Silver 200.9 0.5 Zinc 200.9, 1639 1.0

PCBs (total, by either of these methods)

3510B, 8080A, NYSDEC 0.006

Pentachlorophenol 3501B, 8270C 2.60

Pesticides 3510B, 8080A Aldrin 0.26 Chlordane 0.02 Chloropyrifos 0.002 Dieldrin 0.14

4, 4’-DDT 0.03

α & β Endosulfan 0.007 Endrin 0.007 Heptachlor 0.01 Heptachlor epoxide 0.01 Lindane 0.26 Toxaphene 0.04

Reference:

NYSDEC. 1991. Analytical Method for the Determination of PCB Congeners by Fused Silica Capillary Column Gas Chromatography with Electron Capture Detector. NYSDEC #91-11.

APPENDIX B SAMPLING LOGS

PROJECT: Rye Harbor FNP DATE: 7/9/2015

SAMPLING PERSONNEL: RBL, ADH, TAR

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: A SAMPLER TYPE: Vibracore

TIME: 09:34

SOUNDING: -8.8’ CORRECTED DEPTH: -8.3’ MLLW

COORDINATES: N 42.999925 E -70.745434

PENETRATION: 3.7 RECOVERY: 3.7’ NO. OF ATTEMPTS: 2

MATERIAL DESCRIPTION: Poorly graded medium to fine sand (SP)

CORE PHOTO: NOTES:

Core taken to refusal in hard packed sand.

0-3.7: SP – Gray, poorly graded medium to fine sand with few scattered shell fragments. Very firm and moist. No odor. Top 0.1 is light gray and soft.

Sample interval from 0-2.7

PROJECT: Rye Harbor FNP DATE: 10/22/2015

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: B SAMPLER TYPE: Vibracore

TIME: 9:53

SOUNDING: -6.9’ CORRECTED DEPTH: -6.8’MLLW

COORDINATES: N 43.000612 E -70.747667

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

MATERIAL DESCRIPTION: Poorly graded fine sand and silt (SP/SM)

Core taken to refusal in hard packed sand.

0-2.9: SP/SM – Dark gray, poorly graded fine sand and silt. Firm and moist. H2S odor.

2.9-3.0: SP – Tan, poorly graded medium sand. Very firm and moist. No odor.

Sample interval from 0-2.5

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: C SAMPLER TYPE: Vibracore

TIME: 10:12

SOUNDING: -5.5’ CORRECTED DEPTH: -4.5’ MLLW

COORDINATES: N 43.001350 E -70.749840

PENETRATION: 4.4’ RECOVERY: 4.4’ NO. OF ATTEMPTS: 1

Station moved because of numerous boats moored in planned location.

Core taken to refusal.

0-1.7: SP – Dark gray, poorly graded fine sand and silt. Firm and wet. No odor.

1.7-4.2: SP/SM – Dark gray, poorly graded, fine sand and silt. Soft and moist. H2S odor.

4.2-4.3: SP – Gray, poorly graded medium sand. Firm and moist. No odor.

4.3-4.4: SP/SM – Dark gray, poorly graded, fine sand and silt. Soft and moist. H2S odor.

Sample interval from 0-4.4

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: D SAMPLER TYPE: Vibracore

TIME: 10:27

SOUNDING: -3.8’ CORRECTED DEPTH: -4.0’ MLLW

COORDINATES: N 43.001885 E -70.751137

PENETRATION: 4.5’ RECOVERY: 4.5’ NO. OF ATTEMPTS: 1

MATERIAL DESCRIPTION: Silt with fine sand (ML)

Core taken to refusal.

0-1.7: SP/SM – Dark gray, poorly graded fine sand and silt. Loose and wet. H2S odor.

1.7-4.2: ML – Dark gray silt with fine sand and scattered organic material. Soft and moist. H2S odor.

Sample interval from 0-4.5’

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: E SAMPLER TYPE: Vibracore

TIME: 10:40

SOUNDING: -5.1’ CORRECTED DEPTH: -5.3’ MLLW

COORDINATES: N 43.000746 E -70.746528

PENETRATION: 2.8’ RECOVERY: 2.8’ NO. OF ATTEMPTS: 1

Core taken to refusal

0-1.2: SP – Dark gray, poorly graded fine sand some silt. Firm and moist.

Veneer of loose tan medium sand at surface. No odor.

1.2-2.7: SP/SM – Dark gray, poorly graded fine sand and silt. Soft and moist. H2S odor.

2.7-2.8: SP – Dark gray, poorly graded fine sand. Firm and moist.

Sample interval from 0-2.0

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: F SAMPLER TYPE: Vibracore

TIME: 10:53

SOUNDING: -3.7’ CORRECTED DEPTH: -3.9’ MLLW

COORDINATES: N 43.001634 E -70.748211

PENETRATION: 4.7’ RECOVERY: 4.7’ NO. OF ATTEMPTS: 2

0-0.1: SP – Tan, poorly graded medium to fine sand. Loose and wet.

0.1-2.7: SP – Dark gray, poorly graded fine sand with organics. Soft and moist. H2S odor.

2.7-3.1: SP/SM – Dark gray, poorly graded fine sand and silt. Soft and moist. Single whole mussle shell from 2.85-3.0. H2S odor.

3.1-4.7: SP – Dark gray, poorly graded fine sand with silt and scattered organics. Firm and moist. One whole periwinkle shell at 3.4. H2S odor.

Sample interval from 0-3.1’

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: G SAMPLER TYPE: Vibracore

TIME: 11:14

SOUNDING: -5.0’ CORRECTED DEPTH: -4.9’ MLLW

COORDINATES: N 42.999709 E -70.747358

PENETRATION: 4.9’ RECOVERY: 4.9’ NO. OF ATTEMPTS: 2

0-1.9: SP/SM – Dark gray, poorly graded fine sand and silt with scattered shell fragments. Firm and moist. Top 0.25 is loose and wet. Macroalgae wrack at surface. Slight H2S odor.

1.9-4.4: SP – Tan, poorly graded fine sand. Firm and moist.

4.4-4.9: CL – Tan/olive sandy clay with woody organic debris. Very firm and moist.

Sample interval from 0-4.1

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: H SAMPLER TYPE: Vibracore

TIME: 11:30

SOUNDING: -5.3’ CORRECTED DEPTH: -5.1’ MLLW

COORDINATES: N 43.000291 E -70.748164

PENETRATION: 5.2’ RECOVERY: 5.2’ NO. OF ATTEMPTS: 1

0-4.7: SP/SM – Dark gray, poorly graded fine sand and silt. Soft and moist. Top 04 is loose and wet. H2S odor.

4.7-5.2: SP – Dark gray, poorly graded fine sand. Soft and moist. Single 1.5” sub-angular gravel at 5.1.

Sample interval from 0-4.0

SAMPLING PERSONNEL: RBL, ADH, TAR

SEA STATE: Calm WEATHER CODE: Sunny

LOCATION METHOD: DGPS

SAMPLE ID: I SAMPLER TYPE: Vibracore

TIME: 11:42

SOUNDING: -5.4’ CORRECTED DEPTH: -4.9’ MLLW

COORDINATES: N 43.000289 E -70.749142

PENETRATION: 5.3’ RECOVERY: 5.3 NO. OF ATTEMPTS: 1

MATERIAL DESCRIPTION: Poorly graded fine sand and silt (SP/SM)

CORE PHOTO: NOTES:

Core taken to refusal

0-5.1: SP/SM – Dark gray, poorly graded fine sand and silt with scattered organic debris. Soft and moist. Top .4 is coarse and wet. H2s odor.

5.1-5.3: SP: Tan, poorly graded fine sand with woody organic debris.

Firm and moist.

Sample interval from 0-4.1

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 PROJECT LOCATION AND DESCRIPTION

1.2 WORK COVERED BY CONTRACT DOCUMENTS

1.3 DESIGNATED NO DREDGE TIME PERIODS

1.4 REFERENCES

1.5 SUBMITTALS

1.6 PROJECT SITE CONDITIONS

1.6.1 Physical Data

1.7 SUPERINTENDENCE BY THE CONTRACTOR

1.8 COORDINATION AND DIRECTION DURING CONSTRUCTION

1.9 WORK SEQUENCING AND SCHEDULING

1.9.1 Hours of Operations

1.9.2 Work Sequence

1.9.2.1 General

1.9.2.2 Initial Project Schedule

1.9.2.3 Periodic Schedule Updates

1.9.3 Rate of Progress

1.9.4 Scheduling with Harbor Traffic

1.9.5 Work Commencement

1.10 CONTRACTOR'S USE OF UPLAND FACILITIES AND HAULING ROUTES

1.11 CONTRACTOR USE OF PREMISES

1.11.1 General

1.11.2 Access to the Site and Storage/Staging Areas

1.11.3 Temporary Facilities and Utilities, and Storage Areas

1.11.4 Work Limits

1.11.5 Protection and Security

1.11.6 Emergency Contacts

1.11.7 Damaged Property

1.11.8 Contractor's Receipt of Supplies

1.11.9 Daily Clean Up

1.11.10 Littering

1.11.11 Government Sanitary Facilities

1.12 QUALITY ASSURANCE

1.13 COORDINATION

1.13.1 Public Notice

1.13.2 Notice to Mariners

1.13.3 Aids to Navigation

1.13.4 Points of Contact

1.14 PRE-DREDGING PHOTOGRAPHIC SURVEY

1.15 GENERAL SAFETY REQUIREMENTS

1.15.1 General

1.15.2 Contractor's Project Superintendent

1.16 ENVIRONMENTAL PROTECTION

1.17 PRECONSTRUCTION CONFERENCE

PART 2 PRODUCTS

PART 3 EXECUTION

SECTION 01 11 00 Page 1

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 PROJECT LOCATION AND DESCRIPTION

Rye Harbor is located in the town of Rye, New Hampshire and is approximately five miles south of Portsmouth Harbor and 13 miles north of the Merrimack River.

The harbor includes federal and state owned and maintained areas for navigation. The federal portion is made up of a 10-foot deep channel that is 600 feet long by 100 feet wide, and extends from the ocean to the head of the harbor, an eight-foot deep channel that is 1,700 feet long by 100 feet wide, and extends from the 10-foot deep channel to the head of the harbor, a six-foot deep by 250 feet wide anchorage on the north-easterly side of the eight-foot deep channel, and an eight-foot deep by 250 feet wide anchorage on the south-westerly side of the eight-foot deep channel.

The state portion, built by the state in 1941, is an 8-foot deep anchorage approximately 10 acres in area at the head of the harbor on the north-westerly side of the eight-foot deep anchorage.

In 1939 two rubble-mound breakwaters were constructed and situated on each side of the harbor entrance. The north-easterly breakwater is 540 feet long, and the south-westerly breakwater is 530 feet long.

1.2 WORK COVERED BY CONTRACT DOCUMENTS

a. The Contractor shall perform the work in strict accordance with the contract drawings and specifications and provide all supervision, plant, labor, materials, equipment, safety, and quality control necessary to perform all operations as necessary to accomplish the work, complete. The Contractor is responsible for providing and utilizing appropriate plant and equipment to remove and dispose of the dredged material.

b. The general description of the work described below is general in nature and is only given to indicate the approximate scope of work under this contract. It does not limit the work required under the project contract drawings and specifications.

c. General Description of the Work:

(1) Perform mobilization and demobilization as necessary to complete all work in accordance with the contract drawings and specifications.

(2) Perform maintenance dredging to the specified depths and locations in accordance with the contract drawings and specifications.

Within the Federal Navigation Project (FNP) dredge the following as part of the base bid work: The 10-foot deep entrance channel to its required depth of -10 feet Mean Lower Low Water (MLLW) plus one foot allowable overdepth to -11 feet MLLW; the 8-foot deep channel to its required depth of -8 feet MLLW plus one foot

SECTION 01 11 00 Page 2 allowable overdepth to -9 feet MLLW; the 8-foot deep anchorage to its authorized depth of -8 feet MLLW plus one foot allowable overdepth to -9 feet deep MLLW; the 6-foot deep anchorage to its authorized depth of -6 feet MLLW plus one foot allowable overdepth to -7 feet deep MLLW.

If optional bid item is exercised dredge the 8-foot deep state anchorage to a depth of -8 feet MLLW plus one foot allowable overdepth to -9 feet MLLW

(3) All material dredged shall be removed by mechanical means, loaded onto scows, and transported to and…