W912P723B0001_Moss Landing Jetty Repair Project_Amendment 0004_Specification Section 35 31 26.pdf

Moss Landing Jetty Repair Project W912P723B0001

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 31 26

JETTIES

08/19

PART 1 GENERAL

1.1 SUBMITTALS

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Definitions

2.1.1.1 Angular Stone

2.1.2 General

2.1.3 Stone Sources

2.1.3.1 Source Authorization

2.1.3.2 Source Selection

2.1.3.3 Source Documentation

2.1.3.4 Potential Stone Sources

2.1.3.5 Stone Source Inspection

2.1.4 Stone Quality

2.1.4.1 Quality Compliance Testing

2.1.4.2 Materials Testing Laboratory

2.1.4.3 Stone Source Quality Control

2.1.4.4 Stone Quality Testing Requirements

2.1.4.5 Stone Acceptance Criteria

2.1.4.6 Stone Source Demonstration Stockpile

2.1.5 Quarry Operations

2.1.6 Proportional Dimension Limitations

2.1.7 Gradation

2.1.7.1 General

2.1.7.2 Gradation Compilation

2.1.7.3 Stone Gradation Testing

2.1.7.4 Stone Gradation Reports

2.1.7.5 Gradation of A-18 Armor Stone

2.1.7.6 Gradation of A-15 Armor Stone

2.1.7.7 Gradation of A-7 Armor Stone

2.1.7.8 Gradation of A-4 Armor Stone

2.1.7.9 Weight Verification

2.1.7.10 Gradation of Existing Stones

2.1.8 Rejected Stone

PART 3 EXECUTION

3.1 CONSTRUCTION PLAN

3.1.1 Aids to Navigation

3.2 MOBILIZATION AND DEMOBILIZATION

3.3 STONE DELIVERY

3.3.1 Waybills and Delivery Tickets for Truck or Rail Transport

3.3.2 Scale Tickets and Records for Barge Transportation

SECTION 35 31 26 Page 1 October 18, 2022

3.3.3 Stockpiling

3.4 PLACEMENT OF STONE

3.4.1 Unsatisfactory Materials

3.4.2 Armor Stone

3.4.3 Reset Existing Stone

3.4.4 Use of Barges Near the Jetties

3.4.5 Placement of Toe Stone

3.4.6 Spotter

3.4.7 Armor Stone Quantity Breakdown

3.5 JETTY CREST HAUL ROAD

-- End of Section Table of Contents --

SECTION 35 31 26 Page 2 October 18, 2022

SECTION 35 31 26

JETTIES

08/19

PART 1 GENERAL

1.1 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Construction Plan ; G

Stone Source Quality Control Plan ; G

Jetty Crest Haul Road Material Sieve Analysis Test Results ; G

SD-02 Shop Drawings

Aids To Navigation ; G

SD-06 Test Reports

Stone Gradation Reports ; G

Stone Quality Testing Results ; G

SD-07 Certificates

Stone Sources ; G

Gradation Compilation ; G

Waybills And Delivery Tickets ; G

Scale Tickets and/or Records Of Weights ; G

CONSTRUCTION TOLERANCES

Do not deviate from the lines and grades shown by more than the tolerances listed below for the finished surface and stone layer thickness.

Tolerances are measured perpendicular to the indicated neatlines. Extreme limits of the tolerances given are not to be continuous in any direction for more than five times the nominal stone dimension nor for an area greater than 100 square feet of the structure surface.

NEATLINE TOLERANCES

MATERIAL ABOVE NEATLINE (inches) BELOW NEATLINE (inches)

SECTION 35 31 26 Page 3 October 18, 2022

Armor 24 12

The intention is that the work be built generally to the required elevations, slope and grade and that the outer surfaces be even and present a neat and uniform appearance. Remove or rework placed material not meeting these limits as directed. Payment will not be made for excess material which the Contracting Officer or delegated representative permits to remain in place.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Definitions

2.1.1.1 Angular Stone

Stone which is obtained from bedrock deposits and is angular in shape.

2.1.2 General

The Contractor must make all arrangements, pay all royalties, and secure all permits for the procurement, furnishing and transporting of stone. All stone must be durable material as approved by the Contracting Officer or delegated representative. In case an unlisted source is to be used, the Contractor must show that an adequate quantity of material is available and provide quality test data. Stone must be of a suitable quality to ensure permanence in the structure and in the climate in which it is to be used. The Contractor must vary the quarrying, processing, loading and placing operations to produce the sizes and quality of stone specified. If stone being furnished by the Contractor does not fully meet all the requirements of these specifications, the Contractor must furnish, at no additional cost to the Government, other stone meeting the requirements of these specifications.

2.1.3 Stone Sources

2.1.3.1 Source Authorization

Before any stone is produced from a source for completion of the work under this contract, the source of stone must be authorized by the Contracting Officer or delegated representative. Source Authorization of a stone source must not be construed as a waiver of the right of the Government to require the Contractor to furnish stone which complies with these specifications. Materials produced from localized areas, zones or strata will be rejected when such materials do not comply with the specifications

2.1.3.2 Source Selection

The Contractor must determine the source or sources and availability of materials meeting the stone specifications given in this contract, subject to the Contracting Officer or delegated representative approval. Stone may be furnished from any of the sources listed in this section or from any source proposed by the Contractor and accepted by the Contracting Officer or delegated representative, subject to the conditions herein stated. The Contractor must designate in writing at least ten (10) days in advance of

SECTION 35 31 26 Page 4 October 18, 2022 placement the listed source or sources from which he proposes to furnish stone. It is the Contractor's responsibility to determine that the stone source or combination of sources selected is capable of providing the quality, quantities, and gradation needed and at the rate needed to maintain the scheduled progress of the work. If the Contractor proposes to furnish stone from a source not currently listed within this section, the Contractor must so designate in writing at least 30 days in advance of placement. The Government will conduct a quarry investigation and evaluate the quality test data, provided by the Contractor, to determine whether acceptable stone can be produced from the proposed source. The Contractor must submit laboratory test results not more than 4 years old that meet the test requirements given in paragraph: Stone Quality Testing Requirements.

Satisfactory service records on other work may be provided to the Contracting Officer or delegated representative as supplemental data. If this source for stone so designated by the Contractor is not accepted for use by the Contracting Officer or delegated representative, the Contractor may not propose other non-listed sources but must furnish the stone from a source or sources listed in this section at no additional cost to the Government.

2.1.3.3 Source Documentation

Authorization of a proposed non-listed stone source will be based on test results and/or service records. In general, current Corps of Engineers test results must be required as outlined in paragraph: Stone Quality Testing Requirements below. In special cases, however, the Contracting Officer or delegated representative may elect to use either past Corps of Engineers test results, test results from other agencies or private laboratories, or service records. The service record of the stone must be of stone of a similar size and must have been placed in a similar thickness and exposed to weathering under similar conditions as are anticipated for this contract, and must have satisfactorily withstood such weathering for a minimum of ten (10) years. The Contracting Officer or delegated representative has the option to elect to have representative samples taken and tested.

2.1.3.4 Potential Stone Sources

a. On the basis of information and data available to the Government, stone meeting the quality requirements of these specifications has been produced from the sources listed herein:

Quarry Name Nearest City

Mountain Gate Redding, California R. Brown Willow Creek, California San Rafael San Rafael, California Catalina Island Avalon, California

b. Listing of a stone source is not to be construed as to current or future availability of the source, authorization of all materials from the source, nor as a waiver of inspection and testing of the source. Stone produced from any listed source must meet all the requirements set forth in these specifications. Listing of a stone source is also not to be construed as an indication that the source can produce the total quantity of stone required for the project. Stone may be furnished from other sources designated by the Contractor and authorized by the Contracting

SECTION 35 31 26 Page 5 October 18, 2022

Officer or designated representative subject to the conditions stated herein.

2.1.3.5 Stone Source Inspection

The stone source must be inspected and approved prior to source authorization. Contractor must ensure that a qualified material lab technician and a representative of the quarry are present for the inspection. Government will select the samples to be collected for quality testing in accordance with paragraph Stone Quality.

2.1.4 Stone Quality

2.1.4.1 Quality Compliance Testing

a. Collect a minimum of four stone samples from each proposed stone source and quarry. Perform the complete list of stone quality evaluation tests twice for each rock-type lithology. The complete list of stone quality evaluation tests are referred to as the full suite. The full suite of stone quality evaluation tests are presented in a table under paragraph Stone Quality Testing Requirements.

b. During the stone source inspection, collect all stone samples at each stone source with samples selected and approved by the Contracting Officer or delegated representative. The laboratory technician from the USACE Material Testing Center (MTC) approved laboratory is required to collect and ship all samples to the approved laboratory at the Contractor's expense. Perform sample selection and collection on the same date.

c. On average, one to two separate rock types exist at typical stone sources. A stone source may require between two to eight stone quality evaluation tests because of varying lithologies.

d. Each stone sample must consist of 300 pounds each of representative stone from the proposed stone source. The quarry/stone source faces and the stockpiles to be used for the project must be examined and sampled.

e. Acceptance of the stone source is based on the results of the stone quality evaluation tests. Submit the Stone Quality Testing Results for all collected samples in one comprehensive report a minimum of 30 days before initial placement.

2.1.4.2 Materials Testing Laboratory

Perform the full suite of stone quality evaluation tests using a materials laboratory that is currently validated by the MTC, as specified in Section 01 45 00.00 10 QUALITY CONTROL, paragraph Testing Laboratories, and that meets the following requirements:

a. Within the past two years, has successfully performed the full suite of stone quality tests.

b. All stone quality tests, results and reporting are supervised and stamped by a California state registered Civil Engineer or Geologist, with a minimum of two years working experience in stone quality testing and petrography analysis.

SECTION 35 31 26 Page 6 October 18, 2022

2.1.4.3 Stone Source Quality Control

a. Submit the Stone Source Quality Control Plan (QC Plan) a minimum of 10 days in advance of the stone source inspection meeting. The QC Plan must include, at a minimum:

(1) Schedule for the stone source inspection.

(2) Contractor's QC inspection procedure covering production of the stone throughout the duration of the project.

(3) Contact and coordination details.

(4) Description of quarrying methods and means for preparing the stone source for this project

b. The QC Plan must include an example Daily Stone Quality Control (QC) Inspection Report. The Stone Source QC Inspection Report must include, at a minimum, the following information:

(1) Name and location of stone source.

(2) Name of the project stone size/category being inspected (i.e. A-15 Armor stone, A-7 Armor stone, etc.).

(3) Daily colored photographs of stone being inspected.

(4) Photographs of rejected stone and rejected stone stockpile. Rejected stone is to be documented, marked with a red "X" and shown in a photograph.

(5) Inspection results of quality of stone.

c. Perform daily stone quality inspections during stone production and submit the Stone QC Inspection report signed by an authorized CQC Personnel as specified in Section 01 45 00.00 10 QUALITY CONTROL. Include visual examination for cracks, fractures, seams and defects during the daily stone quality inspections. If, by visual examination, it is determined that 1 percent or more of the stone produced contains hairline cracks, then all stone produced by the means and measures which caused the fractures must be rejected.

2.1.4.4 Stone Quality Testing Requirements

a. Subject stone to such tests as are necessary to demonstrate to the satisfaction of the Contracting Officer or delegated representative that the materials are acceptable for use in the work. At a minimum, the stone must meet the following full suite of test requirements:

Test Test Method Requirement

Petrographic Analysis ASTM C295/C295M Good quality and acceptable for use a stone protection

Wetting and Drying ASTM D5313 No fracturing

SECTION 35 31 26 Page 7 October 18, 2022

Test Test Method Requirement

Specific Gravity (Bulk SSD) ASTM C127 2.65 minimum

Absorption ASTM C127 2.0% maximum

Magnesium Sulfate Soundness ASTM C88 10% max loss

Abrasion Loss ASTM C535 20% max loss after 500 revolutions

b. All stone samples tested for Specific Gravity, Absorption, Magnesium Sulfate Soundness and Abrasion must be collected as a composite sample with a size range graded from approximately 3 to 4 inches diameter and have a combined total weight of approximately 150 pounds, in lieu of the size gradation and weights given in the ASTM C535, ASTM C88 and ASTM C127.

In addition to the above tests, subject the stone to a petrographic and X-ray diffraction analysis, in accordance with ASTM C295/C295M. The stone must not contain any expansive clays.

c. Specific Testing Procedures

(1) Wetting and drying test. Perform this test using all procedures according to ASTM D5313 and in accordance with the following specific procedures:

(a) Entire sample must be carefully examined and four representative test specimen slabs selected and produced. The specimen slabs must be large enough to produce four separate cut slabs, each a minimum of 2-1/4 inches thick, with a minimum total surface area of 25 square inches on the slab side. The slab must not be less than 5 inches length per side.

(b) The test samples must be color photographed four times to show all surface features, before each slab is produced. After the slabs are produced and prior to performing the first cycle of the test, the slabs must be individually photographed to show all surface features and then examined under a low-power microscope of at least 20X magnification. All visible surface features must be noted and recorded. A length scale must be included and shown in all color photographs of slabs.

(c) Subject the slabs to a maximum of thirty cycles of wetting and drying.

Two of the four slabs must be soaked in fresh tap water with 0.5 percent ethyl alcohol added by mass; the remaining two slabs must be soaked in salt water, in accordance with ASTM D1141, if a source of nearby natural salt water is not available.

(d) At intervals of every four cycles, the slabs must again be individually color photographed and examined with the low-power microscope to check for openings or movement of fractures, disintegration, spalling, splitting, flaking along edges, swelling of clays, softening of rock surfaces, heaving of micaceous minerals, breakdown of matrix material, and any other evidence of weakness developing in the rock. Observation or worsening of any of the aforementioned flaws must be recorded and the cycle at which they are first observed must be included.

(e) After thirty cycles, the slabs and chunks must again be examined, and all changes must be noted and recorded. The test slabs, together with all

SECTION 35 31 26 Page 8 October 18, 2022 particles broken-off during the test, must be oven-dried, weighed, and color photographed. The test may be terminated prior to the completion of thirty cycles, if the mass of the largest remaining fragment of the slab amounts to less than half of the mass of the original slab specimen.

(2) Weakening and loss of individual surface particles is permissible, unless bonding of the surface grains softens and causes general disintegration of the surface material.

(3) The test procedure for Petrographic and X-ray Diffraction is performed according to ASTM C295/C295M, except for the following:

(a) Prepare a color, magnified photograph of each stone type using a microscope, and identify the individual minerals within the stone by labels and arrows, upon the photograph.

b) Develop a very detailed macroscopic and microscopic description of the stone, to include all the mineral constituents, individual sizes, their approximate percentages, and mineralogical histories. Include a description of stone hardness, texture, weathering, and durability factors.

(c) Present a written summary of the suitability of stone for use as stone protection, based on the Petrographic and X-ray tests and the results of ASTM C535, in the final laboratory report on stone quality

(4) Provide a minimum of two color photographs for each individual stone quality test. Take one of the two photos prior to commencement of each test, and the other after completion of any of each test. Include a suitable length scale in each color photograph. Label each photo "prior to testing" and "after testing" as appropriate. Label each photo with the name of the test and the name of the sample.

(5) Test procedure for LA Abrasion test. Perform this test using all procedures according to ASTM C535, but the following specific procedures for LA Abrasion testing must be performed: The entire sample must be run for 500 revolutions on rock particles in the size range graded from approximately 3 to 4 inches in diameter.

2.1.4.5 Stone Acceptance Criteria

a. All stone is subject to approval. The Contracting Officer or delegated representative will perform visual inspections and measurements of the stone at any point, including before and during delivery to the job site and up to and including placement.

b. If, by visual examination, it is determined that 4 percent or more of the stone produced contains hairline cracks, then all stone produced by the means and measures which caused the fractures must be rejected.

Observed deviations of gradation, weight or quality of stone from the specified requirements or stone considered by the Contracting Officer or delegated representative to be questionable will lead to the stone being rejected and re-sampling and re-testing will be required.

(1) Detrimental hairline cracks are defined as being a minimum width of 4 mil (0.1 mm) and are seen continuously running along one-third the dimension of at least two sides of the stone.

c. Additional sampling and testing of the stone, including the type and quantity of sampling, is at the discretion of the Contracting Officer or

SECTION 35 31 26 Page 9 October 18, 2022 delegated representative. Acceptance of any stone does not constitute acceptance of all stone from a source. All accepted stone must be as follows:

(1) Accepted by the Contracting Officer or delegated representative from an authorized source.

(2) Of the same lithology as the original stone from which test results or quarry records were taken as a basis for authorization of the source.

(3) Sound, durable, hard, and free of laminations, weak cleavages, undesirable weathering, or blasting or handling-induced fractures which subtend more than 1/3 of the total circumference of the stone along the plane of fracturing and which would tend to increase its deterioration from natural causes and hairline cracks that are detrimental.

(4) Of such character that the stone will not disintegrate from the action of air, water, or the conditions of handling and placing.

(5) Clean and free from earth, clay, refuse, or adherent coatings.

(6) Meet all the prescribed stone acceptance criteria and pass all stone quality tests.

2.1.4.6 Stone Source Demonstration Stockpile

a. Following submittal of the Contractor's Stone Source Quality Control (QC) Plan and selection of a source, but prior to the Government's approval of a source, make arrangements to provide a pre-production demonstration stockpile for each stone source according to each specific stone gradation class for the project. Submit notification and schedule Government inspection of demonstration stockpile. All stockpiles must be evaluated for quality and gradation by the Contracting Officer or delegated representative. The stockpile will contain 32 stones and must be located at the source of the stone and be shaped in windrow fashion.

b. Place stones with a size range greater than 8 tons in a single layer with 5 foot of clear space around each stone. Turn individual stones as directed to accommodate the inspection. All stones placed in the demonstration stockpiles must be representative of the overall quality of materials in the source and should not consist of the best specimens, unless it is reasonable to determine that the source will provide the required amount of stone of the applicable size range with a degree of quality no less than that existent in the demonstration stockpile.

c. The Contracting Officer or delegated representative will inspect stone in the stockpiles according to the stone quality and gradation criteria of these specifications. An entire stockpile will be rejected if more than 8 percent of the stones in the stockpile are rejected. If a stockpile is rejected, prepare a replacement stockpile for re-evaluation by the Contracting Officer or delegated representative and revise and resubmit the Stone Source QC Plan. If the replacement stockpile is rejected, the stone source will be rejected for the corresponding size range that is rejected.

d. Stockpiles of representative reject stones from the demonstration stockpile(s) must be marked with a red "X" and set aside to a separate stockpile. The Contractor may choose a replacement stone source if a first or second stockpile is found to be unacceptable. Replacement of the

SECTION 35 31 26 Page 10 October 18, 2022 stockpiles or stone sources will be at no additional cost to the Government and with no change in submittal schedule or time of completion of project.

2.1.5 Quarry Operations

a. Conduct quarry operations in a manner that produces stone conforming to the requirements specified. Producing the stone may involve selective quarrying, handling, processing, blending, and loading as necessary.

b. Any stone found to not meet the minimum acceptance criteria as specified in paragraph Stone Acceptance Criteria must be marked with a red "X" and set aside in a stockpile separate from the acceptable stone to be used in the work.

2.1.6 Proportional Dimension Limitations

A flat and elongated piece of stone is defined as having a ratio of width to thickness or length to width greater than 3:1. Use ASTM D4791 as a guide to perform the test. Not more than 10 percent of the stones within a gradation range are to have an aspect ratio greater than 2.5:1 and no stones are to have an aspect ratio greater than 3:1.

2.1.7 Gradation

2.1.7.1 General

a. All new stone must meet the gradation requirements as specified both at the source and as delivered to the project. Stone not meeting the required grading due to segregation or degradation during placement will be rejected. If test results indicate that stone does not meet the required gradation, the hauling operation will be stopped immediately and will not resume until processing procedures are adjusted and a gradation test is completed showing gradation requirements are met. All gradation tests are at the expense of the Contractor.

b. New armor stone furnished for repair of the north jetty head section is designated "A-15 class armor stone". A-15 designation indicates a median stone weight of 15 tons.

c. New armor stone furnished for repair of the north jetty trunk section and south jetty trunk section is designated "A-7 class armor stone". A-7 designation indicates a median stone weight of 7 tons.

d. New armor stone furnished for repair of the north jetty revetment section is designated "A-4 class armor stone". A-4 designation indicates a median stone weight of 4 tons.

2.1.7.2 Gradation Compilation

a. Provide proof of gradation compliance by specifying the individual weights of each armor stone for each barge or truck/load. If truck or rail is used to move stone from a quarry to a barge loading area, this same documentation (total number of stones and individual weight of each stone) must be supplied for each truck or rail load or stockpile prior to loading of any barge. Paint the weight on all stones.

b. Use a scale to weigh each individual stone from each stone gradation class. Add together individual stone weights and obtain total weight from

SECTION 35 31 26 Page 11 October 18, 2022 each class. Record individual and total weight for each stone class separately from other stone class types. Submit results in a Stone Gradation Report prior to stone being placed.

c. Measure and determine the greatest and least dimension of each stone larger than 2 tons or 36 inches, if the stone is determined to be elongated, with an aspect ratio of 2 to 1, based on visual estimates.

d. Report the proportional dimension characteristics for each stone weighed that is greater than 2.5 to 1 and 3 to 1 ratios. No more than 20 percent of the total weight of stone per stone gradation class can be greater than 2.5 to 1 ratio. No more than 5 percent of the total weight of stone per gradation class can be greater than a 3 to 1 ratio.

2.1.7.3 Stone Gradation Testing

a. If at any time the Contracting Officer or delegated representative determines that weight determination of the stones is necessary on any barge load or other delivery unit, this action will constitute a formal gradation test. All formal gradation tests must be at the expense of the Contractor and conducted in accordance with ASTM D5519, Test Method A.

b. Perform a formal gradation testing on samples selected in the presence of the Contracting Officer or delegated representative. Testing may be performed by the Contractor, subject to approval by the Contracting Officer or delegated representative. Testing must be supervised by a California registered Civil Engineer or geologist, experienced in rock gradation testing.

c. Plot the gradation results on gradation curves, all data points representative of the stone must be between the boundary limits, as defined by smooth curves drawn through specified grading limits and plotted on a mechanical analysis diagram. The individual grading curves must not exhibit abrupt changes in slope, denoting skip-grading or scalping of certain sizes. If gradation test results show that stone does not meet the required gradation, the hauling and/or barging and placement operations will be stopped immediately and will not resume until processing procedures are adjusted and a passing gradation test is completed, showing that gradation requirements are met.

2.1.7.4 Stone Gradation Reports

Submit Stone Gradation Reports for the initial gradation tests. Submit stone gradation reports following gradation testing performed at the direction of the Contracting Officer or delegated representative. The stone test gradation reports contain the following:

a. Date of test and sample location.

b. Size of sample in pounds and, where applicable, dimensions of the area sampled.

c. The greatest dimension and least dimension, of each stone larger than 36 inches or 2 tons, if the stone is determined to be elongated, with an aspect ratio of 1:1.5 based on visual estimates.

d. Weight of material not measured in c) above.

e. Weight of each stone larger than 36 inches or 2 tons.

SECTION 35 31 26 Page 12 October 18, 2022

f. Gradation plot.

g. The type of stone gradation class tested (i.e. A-15 Armor stone)

h. Calculate the percent by weight of stone with a greatest dimension of 2-1/2 or more times the least dimension.

2.1.7.5 Gradation of A-18 Armor Stone

New armor stone is required for the repair of portions of the existing armor layer on the north jetty and south jetty. A-18 armor stone must be quarried, angular stone reasonably well distributed within the limits specified below.

Weight of Individual Pieces (ton) Percent Smaller (by weight)

20 80-100

18 30-80

15 5-30

3 0-5

The following A-18 armor stone table provides the required weights of individual armor stones in tons of 2,000 pounds based upon the unit weight per cubic foot of acceptable stone furnished. Procured jetty stone with a unit weight different than what is provided on the following table is acceptable as long as the minimum unit weight listed on the gradation tables and stone requirements outlined in this specification are met.

Stone Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity

wt. shown in tons)

D50 (ft)

165 3 1514 18 20 6.0

166 3 1514 18 20 5.9

167 3 14 17 1920 5.9

168 3 14 17 1920 5.8

169 3 14 17 1920 5.8

170 3 13 16 1819 5.7

171 3 13 16 1819 5.7

172 3 13 16 1819 5.6

SECTION 35 31 26 Page 13 October 18, 2022

Stone Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity

wt. shown in tons)

D50 (ft)

173 3 1312 15 1718 5.5

174 3 1312 15 1718 5.5

175 3 1312 15 1718 5.4

176 2 1211 14 1617 5.4

177 2 1211 14 1617 5.4

178 2 1211 14 1617 5.3

179 2 1211 14 1617 5.3

180 2 1110 13 1416 5.2

181 2 1110 13 1416 5.2

182 2 1110 13 1416 5.1

183 2 1110 13 1416 5.1

184 2 109 12 1315 5.0

185 2 109 12 1315 5.0

186 2 109 12 1315 5.0

187 2 109 12 1315 4.9

188 2 98 11 1214 4.9

189 2 98 11 1214 4.8

190 2 98 11 1214 4.8

191 2 98 11 1214 4.8

192 2 98 11 1214 4.7

193 2 87 10 1113 4.7

194 2 87 10 1113 4.7

195 2 87 10 1113 4.6

196 2 87 10 1113 4.6

SECTION 35 31 26 Page 14 October 18, 2022

Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity

wt. shown in tons)

D50 (ft)

197 2 87 10 1113 4.5

198 2 87 10 1113 4.5

199 2 86 9 1012 4.5

200 2 86 9 1012 4.4

2.1.7.6 Gradation of A-15 Armor Stone

New armor stone is required for the repair of portions of the existing armor layer on the north jetty and south jetty. A-15 armor stone must be quarried, angular stone reasonably well distributed within the limits specified below.

Weight of Individual Pieces (ton) Percent Smaller (by weight)

18 80-100

15 30-80

12 5-30

3 0-5

The following A-15 armor stone table provides the required weights of individual armor stones in tons of 2,000 pounds based upon the unit weight per cubic foot of acceptable stone furnished. Procured jetty stone with a unit weight different than what is provided on the following table is acceptable as long as the minimum unit weight listed on the gradation tables and stone requirements outlined in this specification are met.

Stone Unit

Weight (pcf)

0% to 5% (by total quantity wt.

shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

165 3 12 15 18 5.6

166 3 12 15 18 5.5

167 3 11 14 1617 5.5

168 3 11 14 1617 5.4

169 3 11 14 1617 5.4

SECTION 35 31 26 Page 15 October 18, 2022

Unit

Weight (pcf)

0% to 5% (by total quantity wt.

shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

170 3 10 13 1516 5.3

171 3 10 13 1516 5.3

172 3 10 13 1516 5.2

173 3 10 13 1516 5.2

174 2 109 12 1415 5.1

175 2 109 12 1415 5.1

176 2 109 12 1415 5.0

177 2 109 12 1415 5.0

178 2 98 11 1314 5.0

179 2 98 11 1314 4.9

180 2 98 11 1314 4.9

181 2 98 11 1314 4.8

182 2 87 10 1213 4.8

183 2 87 10 1213 4.7

184 2 87 10 1213 4.7

185 2 87 10 1213 4.7

186 2 87 10 1213 4.6

187 2 87 10 1213 4.6

188 2 76 9 1112 4.6

189 2 76 9 1112 4.5

190 2 76 9 1112 4.5

191 2 76 9 1112 4.4

192 2 76 9 1112 4.4

193 2 76 9 1112 4.4

SECTION 35 31 26 Page 16 October 18, 2022

Unit

Weight (pcf)

0% to 5% (by total quantity wt.

shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

194 2 65 8 911 4.3

195 2 65 8 911 4.3

196 2 65 8 911 4.3

197 2 65 8 911 4.2

198 2 65 8 911 4.2

199 2 65 8 911 4.2

200 2 65 8 911 4.2

2.1.7.7 Gradation of A-7 Armor Stone

A-7 armor stone must be quarried, angular stone reasonably well distributed within the limits specified below.

Weight of Individual Pieces (ton) Percent Smaller (by weight)

10 80-100

7 30-80

4 5-30

2 0-5

The following A-7 armor stone table provides the required weights of individual armor stones in tons of 2,000 pounds based upon the unit weight per cubic foot of acceptable stone furnished. Procured jetty stone with a unit weight different than what is provided on the following table is acceptable as long as the minimum unit weight listed on the gradation tables and stone requirements outlined in this specification are met.

Stone Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

165 2 4 7 10 4.4

166 1 4 7 10 4.3

167 1 4 7 10 4.3

SECTION 35 31 26 Page 17 October 18, 2022

Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

168 1 4 7 10 4.3

169 1 4 7 10 4.2

170 1 4 7 10 4.2

171 1 4 7 10 4.1

172 1 3 6 9 4.1

173 1 3 6 9 4.1

174 1 3 6 9 4.0

175 1 3 6 9 4.0

176 1 3 6 9 4.0

177 1 3 6 9 3.9

178 1 3 6 9 3.9

179 1 3 6 9 3.9

180 1 3 6 9 3.8

181 1 3 5 7 3.8

182 1 3 5 7 3.8

183 1 3 5 7 3.7

184 1 3 5 7 3.7

185 1 3 5 7 3.7

186 1 3 5 7 3.6

187 1 3 5 7 3.6

188 1 3 5 7 3.6

189 1 3 5 7 3.5

190 1 3 5 7 3.5

191 1 3 5 7 3.5

SECTION 35 31 26 Page 18 October 18, 2022

Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

192 1 2 4 6 3.5

193 1 2 4 6 3.4

194 1 2 4 6 3.4

195 1 2 4 6 3.4

196 1 2 4 6 3.4

197 1 2 4 6 3.3

198 1 2 4 6 3.3

199 1 2 4 6 3.3

200 1 2 4 6 3.3

2.1.7.8 Gradation of A-4 Armor Stone

A-4 armor stone must be quarried, angular stone reasonably well distributed within the limits specified below.

Weight of Individual Pieces (ton) Percent Smaller (by weight)

7 100

5 50-80

3 30-50

1 0-5

The following A-4 armor stone table provides the required weights of individual armor stones in tons of 2,000 pounds based upon the unit weight per cubic foot of acceptable stone furnished. Procured jetty stone with a unit weight different than what is provided on the following table is acceptable as long as the minimum unit weight listed on the gradation tables and stone requirements outlined in this specification are met

Stone Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

165 1 3 5 7 3.3

SECTION 35 31 26 Page 19 October 18, 2022

Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

166 1 3 5 7 3.3

167 1 3 5 7 3.2

168 1 3 5 7 3.2

169 1 3 5 7 3.2

170 1 3 5 7 3.2

171 1 3 5 7 3.1

172 1 3 5 7 3.1

173 1 3 5 7 3.1

174 1 3 5 7 3.0

175 1 3 5 7 3.0

176 1 3 5 7 3.0

177 1 3 5 7 3.0

178 1 3 5 7 2.9

179 1 3 5 7 2.9

180 1 3 5 7 2.9

181 1 3 5 7 2.9

182 1 3 5 7 2.8

183 1 3 5 7 2.8

184 0.7 0.5 2 3 5 2.8

185 0.7 0.5 2 3 5 2.8

186 0.7 0.5 2 3 5 2.7

187 0.7 0.5 2 3 5 2.7

188 0.7 0.5 2 3 5 2.7

189 0.7 0.5 2 3 5 2.7

SECTION 35 31 26 Page 20 October 18, 2022

Unit

Weight (pcf)

0% to 5% (by total quantity

wt. shown in tons)

5% to 30% (by total quantity

wt. shown in tons)

30% to 80% (by total quantity

wt. shown in tons)

80% to 100% (by total quantity wt.

shown in tons)

D50 (ft)

190 0.7 0.5 2 3 5 2.7

191 0.7 0.5 2 3 5 2.6

192 0.7 0.5 2 3 5 2.6

193 0.7 0.5 2 3 5 2.6

194 0.7 0.5 2 3 5 2.6

195 0.7 0.5 2 3 5 2.6

196 0.7 0.5 2 3 5 2.5

197 0.7 0.5 2 3 5 2.5

198 0.7 0.5 2 3 5 2.5

199 0.7 0.5 2 3 5 2.5

200 0.7 0.5 2 3 5 2.5

2.1.7.9 Weight Verification

Provide a visual sample palette that is representative of the weight distribution amongst all of the stone gradation classes required in the specifications. This sample palette must be located on the project site and be visible to aid the Contracting Officer or delegated representative in determining the onsite gradation of stone during continuous Quality Assurance Inspections. Mark each stone with its measured weight in tons such that the marked weight of every stone is clearly visible.

2.1.7.10 Gradation of Existing Stones

North Jetty Gradation:

Station Armor Stone Range Weight (ton)

54+68 7 to 12 tons 9

53+75 3 to 6 tons 9

53+25 3 to 6 tons 4.5

52+75 3 to 6 tons 4.5

52+50 3 to 6 tons 4.5

SECTION 35 31 26 Page 21 October 18, 2022

Station Armor Stone Range Weight (ton)

49+80 1 to 2 tons 1.5

48+39 50 lbs to 2 tons 1.5

46+75 50 lbs to 2 tons 1.5

39+34 50 to 1500 lbs 1.5

South Jetty Gradation:

Station Armor Stone Range Weight (ton)

25+54 7 to 12 tons 9

25+00 3 to 12 tons 9

24+75 3 to 12 tons 4.5

20+40 500 lbs to 6 tons 4.5

12+48 50 lbs to 2 tons N/A

2.1.8 Rejected Stone

New stone of unsuitable quality and/or size distribution, as required by these specifications, will be rejected. Any rejected stone must be promptly removed from the project at no expense to the Government. Any portions of the work covered by these specifications containing rejected stone will be considered incomplete.

PART 3 EXECUTION

3.1 CONSTRUCTION PLAN

Submit a Construction Plan indicating the methods and equipment proposed to conduct all construction related operations. Submit the plan to the Contracting Officer or delegated representative for approval, at least 30 days prior to start of construction operations and also include, as a minimum, the following information:

a. Project schedule showing the order of all rock placement operations, and the anticipated dates of completion of the salient features of the work. Submit the project schedule and progress updates in accordance with Section 01 32 01.00 10 PROJECT SCHEDULE.

b. Layout of all cranes, vessels, barges, buoys, anchors, and ancillary equipment.

c. Staging area layout and operation.

d. Method and equipment for transporting and placing material at the work site, and equipment that will be utilized on the work site.

SECTION 35 31 26 Page 22 October 18, 2022

e. All barge names, dimensions, and capacities.

f. Methods for access, i.e. roads, water access, and any excavation required.

g. Lighting plan for night work.

h. A copy of the Daily Report Form to be used for construction operations.

3.1.1 Aids to Navigation

Submit shop drawings of the aids to navigation for the North and South jetties.

3.2 MOBILIZATION AND DEMOBILIZATION

Mobilization and demobilization includes (but is not limited to) transporting all land and marine plant and items of attendant equipment to the work site, Contractor's staging area preparation, protection of existing facilities, repair to any facilities damaged, Contractor furnished boat access, as-built drawings, and obtaining and complying with all permits (local, state, federal). Upon completion of all phases of the work, remove the plant and equipment from the site.

3.3 STONE DELIVERY

3.3.1 Waybills and Delivery Tickets for Truck or Rail Transport

Submit copies of delivery tickets during the progress of the work. Furnish scale tickets for each load of material weighed. Include tare weight, identification mark of each vehicle weighed, date, time, and location of the loading. Furnish a master log of all vehicle loading for each day of loading operation. Submit the master log of loadings, certified waybills and/or certified tickets as part of the Daily Report of Operations. For each progress payment request, furnish written certification that the material recorded on the submitted certified tickets was actually used in the construction covered by the Contract.

3.3.2 Scale Tickets and Records for Barge Transportation

Submit copies of Scale Tickets and/or Records of Weights , including displacement weight date, for each load of stone delivered to the site.

Load each barge with only one gradation class. Prior to the commencement of work, submit the barge physical dimensions and weights and barge volume displacement charts for each barge intended for use for approval. The displacement chart(s) for each barge must be certified by a marine surveyor or naval architect (naval architecture analysis) within the previous five years. With each scale ticket and/or record include the gross, rate, dunnage, and net weight of stone. The weight of dunnage for each load will be determined, recorded, and certified by the Contracting Officer or delegated representative. The deliveries and numbered scale tickets and/or records must be recorded on an approved system to maintain delivery control. Copies of scale tickets and/or records must accompany each load of stone and a copy be submitted as part of the Daily Report of Operations.

SECTION 35 31 26 Page 23 October 18, 2022

3.3.3 Stockpiling

Keep from excessive stockpiling of stone within the Contractor's staging and storage area. Only maintain sufficient quantity of stone to allow placement work to continue with limited or no downtime. Stockpiling of stone is allowed prior to start of the jetty repair work.

3.4 PLACEMENT OF STONE

3.4.1 Unsatisfactory Materials

Unsatisfactory materials include timbers, rubble concrete, refuse or other discarded marine equipment. Remove all unsatisfactory materials within the reaches for construction, unless otherwise directed. Dispose all materials in accordance with the requirements of Section 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS, including any applicable local requirements.

3.4.2 Armor Stone

Place armor stone in the locations and at the thickness shown without deviating from the lines and grades shown. Perform final shaping of the slope concurrently with the initial placement of the stone. Select stones and set in contact with each other so that the interstices between adjacent stones is as small as the character of the stone will permit.

Interlock stones with adjacent stones by rotating and setting them for maximum contact based on their angular shapes. Face to face contacts are required between a stone and adjacent stones. The long axis of each stone must be perpendicular to the axis of the structure and slope downward toward the center of the structure. Begin placement at the bottom of the slope. Place stones in a manner to avoid displacing underlying materials or placing undue impact force on underlying material that would cause the breaking of stones. Dropping of armor stone is not permitted. The equipment used in placing the stone must be suitable for handling materials of the sizes required including the ability to place the stone over its final position before release and if necessary pick up and reposition the stone. Dragline buckets and skips are not permitted for placement of armor stone. Moving stone by drifting or manipulating down the slope is not permitted. The finished work must be a well distributed mass, free of pockets of either smaller or larger stone, having a minimum of voids and with the maximum interlocking of stones.

3.4.3 Reset Existing Stone

The work consists of moving and resetting existing stone on the seaward side, channel side, and crest of the structures. "Existing Stone" is defined as stone that varies between approximately 5 to 25 tons. Existing stone smaller than 5 tons is considered an incidental part of the work.

Remove, salvage, and reset existing stone as needed to achieve the required interlocking with newly placed stone. Move and reset existing stone in accordance with the applicable portions of paragraph, Armor Stone. Temporary storage may be necessary between lifting and final placing. All reset stone must meet the same placement requirements as new stone. A stone that breaks or splits or shatters during handling is considered a rejected stone and is to be removed from the site at the Contractor's expense. Dropping of stone is not permitted. Existing stones are exempt from all quality or proportion or gradation requirements in this specification.

SECTION 35 31 26 Page 24 October 18, 2022

3.4.4 Use of Barges Near the Jetties

There could be rocks underwater near the North and South jetties. The contractor must exercise caution when using barge spuds near the jetties.

3.4.5 Placement of Toe Stone

Refer to the typical toe stone placement detail in the drawings. All placed toe stone must weigh the 40% to 60% gradation or greater for each stone type. Firmly key in toe stone with existing and new armor stone ensuring face to face contact with adjacent stones, and not face to point or point to point contact. The toe stone must be well seated and securely placed within the existing jetty surface by embedding the new toe stone a half stone dimension below the existing jetty surface. Place toe stone to take advantage of the tides as much as possible to provide the greatest visibility of the completed jetty toe and tie-in to the existing jetty slope. Depths of toe stone placement vary. Efforts must be taken to achieve a side slope as close to design side slopes as possible. Survey each toe stone and submit the x,y,z coordinates

3.4.6 Spotter

Utilize at least one spotter for each piece of placement equipment to aid in stone placement at all times except for times when unsafe working conditions exist. The spotters and stone placement operator must maintain visual and radio contact during placing operations. The spotter must be physically capable of working on the jetty and must have experience working in the marine environment. Spotters must be trained and familiar with survey equipment and grade checking to verify real-time stone placement is within specified grade tolerances. All spotters must wear head protection rated ANSI Z89.1-2014Type 1 Class C, when working on the jetty.

3.4.7 Armor Stone Quantity Breakdown

Repair Armor Stone Class Armor Stone (ton)

A-18 3,500

A-15 1,900

A-7 900

A-4 800

3.5 JETTY CREST HAUL ROAD

a. Provide and maintain a jetty haul road on the jetty crest for travel on the jetty by trucks and equipment as required. The jetty haul road constructed by the Contractor must have sufficient quarry shotrock or road building material to prevent damage to the existing armor stone in areas not being repaired and protect new armor stone placed within the repair areas. Protect newly constructed areas of the jetty with haul road material, rubber mats, tires, or other approved devices prior to any equipment access. Construct the jetty crest haul road with two basic types of material:

(1) Large "chinking" stone to fill large voids in the jetty stone

SECTION 35 31 26 Page 25 October 18, 2022 or to provide shoulder support.

(2) Smaller quarry material to provide a "driving" layer having sufficient thickness and strength to support heavy equipment and protect existing jetty stones.

b. The haul road must have no more than 12 percent fines by weight (i.e.

no more than 12 percent of the material passing the No. 200 U.S.

Standard Sieve Size) as determined by ASTM C136/C136M or AASHTO T 27.

Submit jetty crest haul road material sieve analysis test results at least 60 days prior to placing jetty crest haul road material.

c. Locate and construct the jetty haul road in a manner to minimize disturbance to the existing jetty grade/surface in areas outside of the repair limits. Existing jetty crest stone above the repair design elevation must remain in place unless stone needs to be moved to provide construction equipment access or appropriate installation of new jetty stone. Existing jetty stone that is moved must be used to fill the design template provided it meets applicable size and quality specifications, stone that does not meet size and/or quality specifications must be removed from the jetty and placed as directed by the COR. Evenly distribute any suitable displaced stone not used in the repair template or used to fill holes in the crest on the existing finished side slopes of the jetty and interlock as appropriate without disturbing the existing slope stone. Make appropriate provisions for placing a sufficient thickness of haul road material to provide for a level roadway. Jetty haul road material must not be placed on portions of the jetty requiring repairs until after repairs are completed, unless approved by the COR. Accomplish work in a manner that does not create unstable areas that can initiate a cascading slope failure. The haul road is not required to be removed at the end of the contract. Where turnouts are to be constructed, end dumping of stone is permitted but only after the underlying required cross section has been constructed to meet paragraph STONE PLACEMENT.

Minimize the number of turnouts necessary to allow the construction operations to be carried out. All turnouts on the jetty constructed by the Contractor must be removed by the end of the Contract.

d. Install reflective markers along the jetty crest haul road every 50 feet so equipment operators have visibility of the haul road during all weather conditions.

e. The estimated quantity of 4" by 8" riprap for the North and South Jetty crest haul roads are 5,500 tons and 2,500 tons, respectively.

-- End of Section --

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