B3_Amend-0001_W9126G17B0022.pdf

W45VAK71316197

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of this amendment is show n on the follow ing pages. See pages follow ing.

BID OPENING REMAINS ON 18 AUG 2017 @2:00 P.M.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 24

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W9126G17B0022

X 9B. DATED (SEE ITEM 11)

20-Jul-2017

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

08-Aug-2017

CODE

US ARMY CORPS OF ENGINEERS FORT WORTH

2000 FORT POINT ROAD

GALVESTON TX 77550-1229

W9126G 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W9126G17B0022

A0001-2

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

1. The specifications for Solicitation No. W9126G17B0022, Corpus Christi Ship Channel, Texas, Placement Areas1-2, 3-A, 3-B, and 10 in Nueces County, Texas, Placement Area Improvements, are hereby amended as follows:

a) Specifications

(1) SECTION O2 32 00.00 45, SUBSURFACE DRILLING, SAMPLING AND TESTING – The enclosed SECTION 02 32 00.00 45 entitled SUBSURFACE DRILLING, SAMPLING AND TESTING, supersedes that issued with this Solicitation.

b) Drawings.

(1) DRAWINGS NO. S-14 AND S-15 – The drawings numbered S-14 and S-15 are in addition to that issued with this solicitation. These pages were inadvertently omitted from the original solicitation, no changes made.

2. This amendment shall be attached to and become a part of the solicitation.

2 Encls:

1. SECTION 02 32 00.00 45, SUBSURFACE DRILLING, SAMPLING AND TESTING

2. DRAWINGS NO. S-14 AND S-15

SWG FILE NO.:NUECES 803-352 SOLICITATION NO.:W9126G17B0022

SECTION TABLE OF CONTENTS

DIVISION 02 - EXISTING CONDITIONS

SECTION 02 32 00.00 45

SUBSURFACE DRILLING, SAMPLING, AND TESTING

PART 1 GENERAL

1.1 REFERENCES

1.2 SYSTEM DESCRIPTION

1.2.1 Auger Borings and Sampling

1.2.2 Drive Sample Borings and Sampling

1.2.3 Undisturbed Sample Borings and Sampling

1.2.4 Test Pit Excavation and Sampling

1.2.5 Sequencing and Scheduling

1.2.5.1 Schedule of Drilling, Sampling, and Testing

1.2.5.2 Order of Work

1.2.5.3 Reporter

1.2.5.4 Government Oversight

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 General

1.5.2 Undisturbed Samples

1.6 PROJECT/SITE CONDITIONS

1.6.1 Environmental Requirements

1.6.2 Field Measurements

PART 2 PRODUCTS

2.1 CONTAINERS

2.1.1 Sample Jars

2.1.2 Shipping Boxes

2.1.3 Tubes and Crates

2.2 LABELS

2.2.1 Sample Jar Labels

2.2.2 Shipping Box Labels

2.3 EQUIPMENT AND SUPPLIES

2.3.1 Auger Boring and Sampling

2.3.2 Drive Sample Boring and Sampling

2.3.3 Undisturbed Sample Boring and Sampling

2.3.3.1 Sands and Cohesive Soils

2.3.3.2 Stiff and Dense Soils

2.3.4 (AM#1)Cone Penetrometer Testing (CPT) Equipment

2.3.5 Test Pit Excavation and Sampling

PART 3 EXECUTION

3.1 MOBILIZATION AND DEMOBILIZATION

3.1.1 Mobilization

3.1.2 Demobilization

3.2 IDENTIFYING SAMPLES

3.3 AUGER BORING AND SAMPLING

3.4 DRIVE SAMPLE BORING AND SAMPLING

SECTION 02 32 00.00 45 Page 1

(TO ACCOMPANY AMENDMENT NO. 0001 TO SOLICITATION NO. W9126G17B0022)

3.5 UNDISTURBED SAMPLE BORING AND SAMPLING

3.5.1 Procedure

3.5.2 Sealing

3.5.2.1 Alternate 1

3.5.2.2 Alternate 2

3.5.2.3 Alternate 3

3.6 (AM#1)CONE PENETROMETER (CPT) TEST REQUIREMENTS

3.6.1 CPT Personnel

3.7 SUPPLEMENTAL BORINGS OR PITS

3.8 BACKFILLING

3.8.1 Drill Holes

3.8.2 Test Pits

3.9 RECORDS

3.10 LABORATORY TESTING

3.10.1 General Overview

3.10.1.1 Testing Equipment

3.10.1.2 Laboratory Personnel

3.10.1.3 Laboratory Tests

3.10.1.4 Reports of Laboratory Test Results

3.11 SURVEYING INVESTIGATION LOCATIONS

3.11.1 Equipment

3.11.2 Personnel for Third Order Accuracy Surveys

3.11.3 Datum

3.11.3.1 Vertical Control for Land and Marsh

3.11.3.2 Horizontal Control

3.11.3.3 Monument Accuracy Verification

3.11.3.4 Conversions

3.11.4 Survey Deliverables

3.11.4.1 Driller's Logs

3.11.4.2 gINT Logs

3.11.4.3 Field Vane Shear, HCPT, Pipe Probing, and Electronic CPT

3.11.4.4 MicroStation Files

3.11.4.5 ASCII File Format

3.12 FINAL REPORTS

ATTACHMENTS:

approximate locations of drill holes and test pits

-- End of Section Table of Contents --

SECTION 02 32 00.00 45 Page 2

SECTION 02 32 00.00 45

SUBSURFACE DRILLING, SAMPLING, AND TESTING

AMENDMENT NO. 0001

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

(AM#1)

ASTM D5778 (2012) Standard Test Method for Electronic Friction Cone and Piezecone Penetration Testing of Soils

ASTM D5778 (2012) Standard Test Method for Electronic Friction Cone and Piezecone Penetration Testing of Soils

ASTM D1452 (2009) Soil Investigation and Sampling by Auger Borings

ASTM D1586 (2011) Penetration Test and Split-Barrel Sampling of Soils

ASTM D1587/D1587M (2015) Thin-Walled Tube Sampling of Soils for Geotechnical Purposes

ASTM D2487 (2011) Soils for Engineering Purposes (Unified Soil Classification System)

ASTM D2488 (2009a) Description and Identification of Soils (Visual-Manual Procedure)

1.2 SYSTEM DESCRIPTION

Provide the data to determine the type, nature, and characteristics of subsurface materials and the extent and conditions of the various materials as they exist to the depths and at the locations specified. This is to be accomplished by means of auger borings, drive sample borings, undisturbed sample borings, and/or test pits, as indicated.

1.2.1 Auger Borings and Sampling

An auger boring is any boring made in unconsolidated soils with a conventional manually or power-driven earth auger for the purpose of obtaining samples of subsurface materials. Auger boring and sampling will be performed in accordance with ASTM D1452.

SECTION 02 32 00.00 45 Page 3

1.2.2 Drive Sample Borings and Sampling

A drive sample boring is a boring made through unconsolidated or partly consolidated sediments or decomposed rock by means of a mechanically driven sampler. The purpose of these borings is to obtain knowledge of the composition, the thickness, the depth, the sequence, the structure, and the pertinent physical properties of foundation or borrow materials. Drive sample boring and sampling will be performed in accordance with ASTM D1587/D1587M. Standard Penetration Tests (SPT) will be performed in accordance with ASTM D1586.

1.2.3 Undisturbed Sample Borings and Sampling

An undisturbed sample boring is a boring made to obtain soil samples which, when tested, will show properties as close to the in situ (in place) properties as any sample which can be obtained. All undisturbed sampling will be accomplished in accordance with ASTM D1587/D1587M.

1.2.4 Test Pit Excavation and Sampling

A test pit is any excavation in soil, hardpan, decomposed rock, or other unconsolidated or partially consolidated overburden materials which has an open cross-sectional area large enough to permit efficient excavation and shoring/lining, engineering and geological inspection and photographing of the subsurface soils and manual undisturbed sampling from within the test pit. All test pits will be excavated, dewatered (if necessary), shored/lined and protected from surface water drainage in accordance with all applicable Federal, State, local, Corps of Engineers, and OSHA safety regulations.

1.2.5 Sequencing and Scheduling

1.2.5.1 Schedule of Drilling, Sampling, and Testing

Prior to starting work, submit a plan for drilling, sampling, testing, and safety. The plan will include, but will not be limited to, the proposed method of drilling and sampling including a description of the equipment and sampling tools that will be used, a listing of any subcontractors to include a description of how the subcontractors will be used and a description of all methods and procedures that will be utilized to insure a safe operation and to protect the environment. No work will be performed until this plan has been approved and no deviation from the approved plan will be permitted without prior approval by the Contracting Officer. The required table of Drilling, Sampling, and Testing is shown on the drawings accompanying these specifications.

1.2.5.2 Order of Work

Geotechnical sampling work may be accomplished in the order the Contractor desires. The Government reserves the right to change the order of work at any time.

1.2.5.3 Reporter

The Contractor will be responsible for supervision of geotechnical core drilling, soil sampling, and laboratory testing of soil samples. The Contractor will assign a professional engineer or a professional geologist to supervise the work to be performed (AM#1)under each individual task order.

The representative of the Contractor will be responsible for coordinating

SECTION 02 32 00.00 45 Page 4 the drilling and sampling operations to ensure that drilling procedures and directions specified in this contract are being followed. In addition, the Contractor will be responsible for ensuring that the soil samples are being properly obtained and handled and that the samples are representative of the subsurface materials being encountered. The Contractor's representative will communicate with representatives of the Contracting Officer during the drilling and sampling operations to advise the Contracting Officer of any difficulties encountered in the performance of the work. Upon receipt of the driller's logs, described in RECORDS of this Section, the Contractor's representative will review the logs for completeness and for agreement with the samples obtained. Upon receipt of directions for laboratory testing, the Contractor's representative will inform laboratory personnel of the tests to be performed and will supervise the testing to ensure that proper testing procedures are followed and that test results are properly recorded. The presence of a representative of the Contracting Officer during the drilling operations and/or the laboratory testing will not relieve the Contractor of the responsibilities specified in this paragraph.

1.2.5.4 Government Oversight

The presence of a Government representative or the keeping of separate drilling records by the Contracting Officer will not relieve the Contractor of the responsibility for the work specified in this specification.

1.3 SUBMITTALS

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

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Drilling Log; G

SD-03 Product Data

Permits, Certifications, and Licenses Schedule of Drilling, Sampling, and Testing; G

1.4 QUALITY ASSURANCE

Comply with all Federal, State and local laws, regulations and ordinances relating to the performance of this work. Procure all required permits, certifications and licenses required by Federal, State, and local law for the execution of this work. Submit copies of all permits, certifications, and licenses prior to starting work. This submittal will also include a statement of the prior experience, in the type of work described in these specifications, of the person or persons designated to perform the work specified herein.

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 General

The Contractor is solely responsible for preserving all samples in good condition. Samples will be kept from freezing and from undue exposure to

SECTION 02 32 00.00 45 Page 5 the weather, and will keep all descriptive labels and designations on sample jars, tubes, and boxes clean and legible until final delivery of samples to, and acceptance by, the Contracting Officer. Except as otherwise specified, deliver samples to a USACE Engineering Research and Development Center (ERDC) certified testing facility or laboratory for analysis. Samples will be delivered within the time limits specified for each type of investigation or in accordance with schedules prepared by the Contracting Officer.

1.5.2 Undisturbed Samples

Take every precaution to avoid damage to samples as a result of careless handling and undue delay in shipping. Samples will be shipped in containers approved by the Contracting Officer and will be of sufficient durability to protect the samples from any damage during shipment. The sample tubes will be well packed in vermiculite or other equal material approved by the Contracting Officer to protect the samples against vibration. Avoid exposing sealed and crated samples to precipitation, direct sunlight, freezing and temperatures in excess of 100 degrees F.

Samples permitted to freeze, even partially, will be replaced by the Contractor. In general, no undisturbed samples will remain on the site of sampling for more than one week before shipment. Samples will be stored and shipped with the tube in a manner that will prevent consolidation and segregation or change of water content.

1.6 PROJECT/SITE CONDITIONS

1.6.1 Environmental Requirements

Comply with SECTION 01 50 00.00 45 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS and SECTION 01 57 20.00 45 ENVIRONMENTAL PROTECTION.

1.6.2 Field Measurements

The approximate locations of drill holes and test pits are shown on the attached drawings. The actual locations will be established in the field as close as practicable to the approximate locations and approved by the Contracting Officer prior to the start of work. The elevations of the established locations will be obtained by the Contractor prior to the start of work. Provide access to the locations as necessary for the prosecution of the work. No separate payment will be made for access construction.

PART 2 PRODUCTS

2.1 CONTAINERS

Furnish jars, tubes, and boxes that meet the following requirements. All such containers will become the property of the Government and the cost thereof will be included in the contract price for the applicable item for which payment is provided.

2.1.1 Sample Jars

Sample jars will be 1 pint capacity, wide-mouth (over 2-1/4 inches in diameter) jars with moisture-tight screw tops.

2.1.2 Shipping Boxes

Boxes for shipping sample jars will have the capacity to hold no more than

SECTION 02 32 00.00 45 Page 6

12 sample jars, the capability of being stacked without collapsing on the samples within, and the strength to contain and protect the jars and their contents under ordinary handling and environmental conditions.

2.1.3 Tubes and Crates

Undisturbed samples will be shipped in thin walled Shelby tubes packed in crates.

2.2 LABELS

2.2.1 Sample Jar Labels

A printed or type-written, fade resistant and waterproof label will be affixed to the outside of each jar and will contain the following information:

PROJECT 803-352 CCSC PA

Improvements

LOCATION Inner Harbor Placement Area No. (Insert No.)

HOLE NO. STATION

JAR NO. of _____ JARS

TOP

ELEVATION OF

HOLE

DEPTH OF

SAMPLE

DESCRIPTION

OF MATERIAL

(such as moist, silty, medium sand)

2.2.2 Shipping Box Labels

Each box of jar samples will be identified with weatherproof and wear-proof labels indicating the following:

PROJECT 803-352 CCSC PA Improvements

LOCATION Inner Harbor Placement Area No. (Insert No.)

JAR SAMPLES FROM HOLE OR HOLES

2.3 EQUIPMENT AND SUPPLIES

2.3.1 Auger Boring and Sampling

Furnish the equipment for making auger borings including, but not limited to, standard continuous flight augers and/or standard cup-type earth augers, similar or equal to the Iwan Auger and not less than 4 inches in diameter unless otherwise approved. The augers will be completely equipped with all the accessories necessary for boring and sampling of overburden materials to the depths and diameters specified or shown on the drawings.

2.3.2 Drive Sample Boring and Sampling

Furnish equipment for making drive sample borings including, but not limited to, standard split barrel or solid barrel drive samplers and

SECTION 02 32 00.00 45 Page 7 power-driven drilling machinery of a type or types approved by the Contracting Officer, complete with a drive hammer as required by the applicable testing standard and all other accessories for taking samples of all types of soils or decomposed rock at the locations and to the depths indicated. The drive shoe for the split barrel samplers will be of hardened steel and will be replaced or repaired when it becomes dented or distorted. Supplies will include, but not be limited to, all casing, drill stem, drill bits, drill fluid and additives, pumps, and power necessary to accomplish the required boring and sampling.

2.3.3 Undisturbed Sample Boring and Sampling

Furnish equipment for making undisturbed sample borings including, but not limited to, power-driven drilling machinery of an approved type or types complete with the special devices and accessories enumerated and described hereinafter. Drilling machinery will be of the hydraulic feed type.

Supplies will include, but not be limited to, all samplers, casing, drill stem, drill bits, drill fluid and additives, pumps, and power necessary to accomplish the required boring and sampling. Drill casing, if used, will be of such minimum inside diameter as to allow use of the selected sampler.

2.3.3.1 Sands and Cohesive Soils

The sampling device used to sample fine to medium grain sands and cohesive soils will be a fixed or stationary piston type that uses a 3-inch diameter thin wall Shelby tube.

2.3.3.2 Stiff and Dense Soils

The sampling device for obtaining samples of stiff and dense soils will be similar or equal to a Denison double tube, swivel head core barrel, or a Pitcher sampler and must be approved by the Contracting Officer prior to use.

2.3.4 (AM#1)Cone Penetrometer Testing (CPT) Equipment

Equipment to be furnished and utilized by the Contractor for CPT shall be dependable equipment in good condition and of sufficient size to efficiently perform the CPT to the required depths at the required locations and within the approved time period specified for the work. CPT equipment will be of the electronic type, suitable for obtaining the data requested herein in accordance with ASTM D5778, entitled Electronic Friction Cone and Piezecone Testing of Soils. All equipment is subject to approval in writing by the Contracting Officer prior to commencement of the required work and shall be maintined in good working condition by the Contractor throughout CPT operations. The Contracting Officer reserves the right to require removal and replacement of undependable equipment and will have the final determination of dependability of the equipment.

2.3.5 Test Pit Excavation and Sampling

Selection of the test pit excavation, shoring/lining and dewatering (if necessary) methods and equipment will be at the Contractor's discretion but must be approved by the Contracting Officer. When the number of test pits to be excavated is large, and when adaptable mechanical trenching equipment is available, the Contracting Officer may require that such mechanical excavating equipment be used to expedite completion of the pits. Supplies for obtaining undisturbed samples will include, but not be limited to, split metal cylinders and/or metal or wooden boxes of acceptable sizes and

SECTION 02 32 00.00 45 Page 8 types. Accessories will include, but not be limited to, a small sample trimming shovel or spade, hatchet, trimming knife, sealing wax and facilities for melting and brushing same, trowels, labels, and boxes for shipping samples. Also furnish all materials required for shoring/lining to comply with all applicable safety regulations. The Contracting Officer may require the Contractor to salvage and re-use this shoring/lining material in successive test pits.

PART 3 EXECUTION

3.1 MOBILIZATION AND DEMOBILIZATION

3.1.1 Mobilization

Mobilization consists of the delivery to the site of all plant, equipment, materials and supplies to be furnished by the Contractor, the complete assembly in satisfactory working order of all such plant and equipment at the jobsite and the satisfactory storage at the site of all such materials and supplies.

3.1.2 Demobilization

Demobilization consists of the removal from the site of all plant, equipment, materials and supplies after completion of the work and also includes, at the direction of the Contracting Officer, the cleanup and removal of all scrap, waste backfill material, waste drilling fluid, soil contaminated with engine/hydraulic oil, backfilling all sumps or excavations resulting from the operations and, in general, returning the site as close to its original condition as possible.

3.2 IDENTIFYING SAMPLES

Sample jars, shipping boxes, and labels will comply with PART 2, paragraphs SAMPLE JARS, SHIPPING BOXES, and LABELS, respectively. Take all precautions required to insure that the shipping boxes are not subjected to rough handling or damaging environmental conditions and comply with paragraph CARE AND DELIVERY OF SAMPLES. A copy of the boring log for the portion of the boring that the samples came from will be enclosed in the shipping box.

3.3 AUGER BORING AND SAMPLING

Samples will be labeled in accordance with paragraph IDENTIFYING SAMPLES.

Samples will be obtained for each change of overburden material and at maximum vertical intervals as indicated. In order to retain the natural moisture content of the material to the fullest extent possible, all samples will be of sufficient volume to completely fill the sample jars and the samples will be placed in the sample jars as soon as possible after they are taken from the hole. All sample jars will be labeled. In general, no sample will remain on the site of boring for more than 1 week after being taken from the boring and placed in a jar.

3.4 DRIVE SAMPLE BORING AND SAMPLING

Samples will be labeled in accordance with paragraph IDENTIFYING SAMPLES.

Drive sample borings drilled through overburden materials will be suitably cased to permit obtaining drive samples of the size or sizes specified or as directed. Samples will be taken either continuously or at maximum vertical intervals of as indicated or at a change in materials as shown on

SECTION 02 32 00.00 45 Page 9 the drawings or as otherwise directed by the Contracting Officer. To minimize the compacting effect of casing driving when casing is used to stabilize a boring, the bottom of the casing will be kept as high above the soil sampling zone as conditions permit. If hollow stem auger is used as a casing and/or to advance the boring, a plug assembly must be used to keep soil from entering the inside of the auger. Above the water table, samples will be obtained from a dry hole. Below the water table, water will be maintained within the hole at or above the groundwater level. Where information on the natural water content of soils above the water table is not needed and when approved by the Contacting Officer, boreholes may be drilled without casing by using a suitable drilling fluid to prevent collapse of sidewalls. When a drilling fluid is used, soil sampling will be done by such means that will prevent inclusion of drilling fluid in the samples. The samples will be placed in sample jars as soon as possible after they are taken from the hole and, when possible, the volume of the sample will be large enough to completely fill the sample jar in order that the natural moisture content of the material may be retained to the fullest extent possible. All samples will be labeled. No sample will remain at the site of boring for more than one week after being taken from the hole.

3.5 UNDISTURBED SAMPLE BORING AND SAMPLING

In general, labeling of undisturbed samples will conform to paragraph IDENTIFYING SAMPLES. Particular care will be taken to indicate the top and bottom of each sample tube. Tubes and crates for undisturbed samples will be labeled "DO NOT JAR OR VIBRATE" and "HANDLE, HAUL, AND SHIP IN POSITION

INDICATED".

3.5.1 Procedure

The procedure for Undisturbed Sample Boring and Sampling will be the same as outlined in paragraph DRIVE SAMPLE BORING AND SAMPLING, except that the sampling device will be advanced downward by one continuous, smooth drive using the drill rig's hydraulic feed system. The hydraulic down pressure will be read and recorded at 6 inch intervals during each sample drive.

The sampling device for stiff and dense soils will be advanced by continuous rotation of the outer cutting barrel in conjunction with use of drill fluid circulation. Driving of any undisturbed sampling device by means such as a drop hammer will not be permitted.

3.5.2 Sealing

3.5.2.1 Alternate 1

The soil sample obtained in a thin wall Shelby tube will be retained in the tube and sealed on both ends with a mechanically expandable O-ring sealing disk of the appropriate size.

3.5.2.2 Alternate 2

The soil sample obtained in a thin wall Shelby tube will be extruded from the tube in the field as soon as the tube is removed from the boring by a method approved by the Contracting Officer. The extruded soil sample will immediately be wrapped in aluminum foil and placed in containers, to be furnished by the Contractor, and encased and sealed with paraffin or approved equal sample sealing method.

SECTION 02 32 00.00 45 Page 10

3.5.2.3 Alternate 3

Both ends of the soil sample tube/liner obtained with a Denison barrel, or its equivalent, will be cleaned out to remove all drill fluid contaminated and/or disturbed soil or to a minimum distance of 2 inches from the ends of the tube/liner. Any material removed that is not contaminated with drill fluid will be placed in a sample jar and labeled in accordance with paragraph IDENTIFYING SAMPLES. The cleaned out ends of the sample liner tube will then be sealed with a paraffin or microcrystalline wax. A metal or wooden disk, having a diameter just slightly smaller than the inside diameter of the liner tube will be inserted into the wax to a distance of 1/4-inch from the end of the soil sample. The wax plugs will be flush with the ends of the tube and a final seal consisting of a metal cap or tape will be placed over the ends of the tube.

/data3.6 (AM#1)CONE PENETROMETER (CPT) TEST REQUIREMENTS

The Cone Penetrometer Tests shall be performed at the locations and pushed hydraulically to the depths specified. Plotted results of each test shall include the depth versus the cone resistance (qc), the depth versus the cone side friction (fsc), the depth versus the pore water pressure, and the depth versus the friction ratio (Rf). Plotted results of cone resistance, cone side friction, and porewater pressure shall be provided in units of tons per square feet (tsf), and depth shall be provided in feet. In addition to plotted results, raw data files from which the plots are based on shall be provided with the final deliverables, with raw data labeled according to type of information and units. The Contractor shall record the coordinates and elevation (X, Y & Z) of CPT locations with reference to the horizontal and vertical datums specified in the section SURVEYING INVESTIGATION LOCATIONS, or as otherwise specified.

3.6.1 CPT Personnel

The Contractor shall have experienced and competent personnel and helpers performing the CPT operations at all times. The Contracting Officer reserves the right to require removal and replacement of personnel and will have the final determination of whether personnel are competent.

3.7 SUPPLEMENTAL BORINGS OR PITS

Supplemental borings or pits that are abandoned or from which unsatisfactory samples or cores are obtained will be supplemented by other borings (AM#1), CPTs or pits adjacent to the original in order that satisfactory samples or the required information will be obtained. Actual locations of any supplemental borings (AM#1), CPTs or pits will be established by the Contracting Officer. Penetration to the depth where the original was abandoned or to the depths where unsatisfactory samples were obtained may be made by any method selected by the Contractor that in the opinion of the Contracting Officer will permit satisfactory completion and sampling below the elevation where the last satisfactory sample (AM#1)/data was obtained in the abandoned or satisfactory sampling in the reaches where satisfactory samples (AM#1) were not obtained in the original borings (AM#1), CPTs, or pits. No payment will be made for supplemental borings or pits that are required to be drilled or excavated to replace borings or pits that were abandoned or from which satisfactory samples were not obtained because of mechanical failure of drilling and sampling equipment, negligence on the part of the Contractor, or other preventable cause for which the Contractor is responsible except that payment will be made for acceptable portions of these supplementary borings or pits below the depths

SECTION 02 32 00.00 45 Page 11 or outside the reaches for which payment was made for the original borings (AM#1), CPTs, or pits.

3.8 BACKFILLING

3.8.1 Drill Holes

Unless otherwise noted in these specifications or directed by the Contracting Officer, all drill holes will be backfilled and abandoned in accordance with all Federal, State, and local laws, regulations and ordinances. Preserve all holes in good condition until final measurement and until the records and samples have been accepted. As a minimum, all holes will be grouted from the bottom of the hole to within 2 feet of the ground surface using a cement bentonite grout mix comprised of 5 lbs of bentonite and 7.5 to 11 gallons of water per 90 pounds bag of portland cement. All grout will be pumped through a pipe that is inserted to the bottom of the boring to insure that the grout fills the full extent of the hole. The remaining ungrouted top 2 feet of the hole will be backfilled with local soil and tamped. All backfilling operations will be performed in the presence of the Contracting Officer and, if required by regulation, Federal, State, and local officials. No separate payment will be made for backfilling drill holes. The cost of this work will be included in the drilling costs.

3.8.2 Test Pits

Backfill all test pits with local soil compacted to original densities as directed by the Contracting Officer. No separate payment will be made for backfilling test pits. The cost of this work will be included in the test pit excavation costs.

3.9 RECORDS

Submit complete, legible copies of DRILLING LOG, ENG FORM 1836 and 1836A, and records to the Contracting Officer upon completion of the work or at such other time or times as directed. Keep accurate driller's logs (DRILLING LOG, ENG FORM 1836, and 1836-A will be provided by the Contacting Officer) and records of all work accomplished under this contract and deliver complete, legible copies of these logs and records to the Contracting Officer upon completion of the work or at such other time or times as directed. All such records will be recorded during the actual performance of the work and will be preserved in good condition and order until they are delivered and accepted. The Contracting Officer has the right to examine and review all such records at any time prior to their delivery and has the right to request changes to the record keeping procedure. The following information will be included on the logs or in the records for each hole or test pit:

a. Hole or Test Pit number or designation and elevation of top of hole or test pit.

b. Driller's name and Geologist's name.

c. Make, size, and manufacturer's model designation of drilling, sampling, and test-pit excavating equipment.

d. Type of drilling and sampling operation by depth.

e. Hole diameter.

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f. Dates and time by depths when test-pit excavation, drilling, and sampling operations were performed.

g. Time required for drilling and sampling operations.

h. Drill action, rotation speed, hydraulic pressure, water pressure, tool drops, and any other unusual and non-ordinary experience which could indicate the subsurface conditions encountered.

i. Depths at which samples or cores were recovered or attempts made to sample or core including top and bottom depth of each run .

j. Classification or description by depths of the materials sampled, cored, or penetrated using the Unified Soil Classification System ( ASTM D2487) and including a description of moisture conditions, consistency and other appropriate descriptive information described in paragraph SUPPLEMENTAL BORINGS OR PITS of ASTM D2488. This classification or description will be made immediately after the samples or cores are retrieved.

k. Classification and description by depths of rock materials sampled or cored including rock type, composition, texture, presence and orientation of bedding, floiation, or fractures, presence of vugs or other interstices, and the RQD for each cored interval.

l. Indication of penetration resistance such as drive-hammer blows given in blows per foot for driving sample spoons and casing and the pressure in psi applied to push thin-wall or piston-type samplers.

m. Weight of drive hammer.

n. Percentage of sample or core recovered per run.

o. Depth at which groundwater is encountered initially and when stabilized.

p. Depths at which drill water is lost and regained and amounts.

q. Depths at which the color of the drill water return changes.

r. Type and weight of drill fluid.

s. Depth of bottom of hole.

t. Pressures employed in pressure testing.

TABLE 1 - COMMON CORE DIAMETERS

CORE DIAMETER

INCHES

HOLE DIAMETER

INCHES

Conventional Core Barrels

AWG 1.185 1.890

BWG 1.655 2.360

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TABLE 1 - COMMON CORE DIAMETERS

NWG 2.155 2.980

HWG 3.000 3.907

Wireline Core Barrels*

A 1.064 1.890

B 1.432 2.360

N 1.875 2.980

H 2.450 3.716

3.345 4.827

Large Diameter Series

2-3/4" X 3-7/8" 2.690 3.875

4" X 5-1/2" 3.970 5.495

6" X 7-3/4" 5.970 7.750

* No Industry Standard for Wireline Sizes. Diameters shown for wireline core barrels are nominal and vary between manufacturers.

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FIGURE 2 - PRESSURE TEST DATA FORM

SHEET ____ 0F ____

DATE _____________

REPORT OF WATER PRESSURE TESTING IN CORE DRILL HOLES

DAM SITE _______________ RIVER ________________ HOLE NO. ____ RIG NO. ____

LOCATION OF HOLE _________________________________________________________

CONTRACTOR ____________________ DRILLER ___________ ELEV. TOP OF HOLE ____

DATA ON FLOW TEST

SECTION OF HOLE TESTED WATER METER READINGS

TOP BOTTOM PRESSURE

DURING

TEST

START

TIME

STOP

TIME

TIME

MINUTES

AT

START

OF

AT

END

OF

TOTAL

WATER

USED

(GAL)

(GAL) PER

SEC

DEPTH ELEV DEPTH ELEV

DATA ON PRESSURE DURATION TEST

SECTION OF HOLE TESTED

TOP BOTTOM GAGE PRESSURE AT TEST INTERVAL REMARKS

DEPTH ELEV DEPTH ELEV

OBSERVED BY _______________________________

SECTION 02 32 00.00 45 Page 15

3.10 LABORATORY TESTING

3.10.1 General Overview

The requirements outlined in ER 1110-1-8100 and ER 1110-1-261 for laboratories, testing equipment, and testing procedures apply to this contract. These regulations may be found at http://www.publications.usace.army.mil/USACEPublications/EngineerRegulations.aspx.

Laboratories are required to be validated by the ERDC. All contracted laboratories and project Quality Assurance (QA) laboratories testing aggregate, concrete, bituminous materials, soils, rock, and other construction materials, require an initial validation prior to performance of any testing and at least every two (2) years thereafter. Laboratories performing water quality, wastewater, sludge, and sediment testing will be approved at an interval not to exceed eighteen (18) months.

Required laboratory testing to be performed by the Contractor on the soil samples obtained from the drilling operations will be specified (AM#1)in the individual task orders covering the drilling, sampling and testing of materials. Sample selection and test assignment will be provided by a representative of USACE after completion of drilling, sampling operations, and preliminary assessment of the samples(AM#1) as required by task order.

All designated testing to be performed by the Contractor will be performed at the Contractor's laboratory and in accordance with the testing procedures defined in the specified ASTM Standards, latest editions, with the exception of torvane shear tests, which will be performed in accordance with publications identified in REFERENCES. All tests will be performed on portions of the sample that are considered representative of the predominant material contained in the sample. The Government reserves the right to retain soil samples obtained during the core drilling operations for independent testing.

3.10.1.1 Testing Equipment

All laboratories and testing equipment furnished and utilized by the Contractor in performing the designated laboratory tests will be of approved types and will be maintained in good repair and within the specified tolerances for laboratory equipment shown in the referenced ASTM Standards. Equipment will be calibrated and/or verified according to frequencies required by the relevant ASTM or other standard procedure and inspected by the Contractor to assure proper operation. Equipment that is out of adjustment or tolerance will not be utilized. The Government reserves the right to periodically inspect the laboratory and testing equipment and to require the adjustment or removal and replacement of unsatisfactory equipment at no additional cost to the Government. The Contracting Officer will have the final determination of whether equipment is satisfactory.

3.10.1.2 Laboratory Personnel

Laboratory personnel performing the required tests will be competent personnel, thoroughly familiar with the equipment and testing procedures being utilized and accustomed to good laboratory techniques. The personnel will be conscientious in the handling and testing of soil samples and will neatly record all test data produced. The Contracting Officer reserves the right to require the removal and replacement of incompetent personnel and will have the final determination of whether personnel are incompetent.

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3.10.1.3 Laboratory Tests

The required number and type of laboratory tests will be identified in the task orders. Types of tests actually assigned to be performed by the Contractor may include all or some of those listed in REFERENCES. The Government reserves the right to be present during the opening and testing of soil samples.

3.10.1.4 Reports of Laboratory Test Results

After all testing is concluded (AM#1)under a specific task order, the Contractor will furnish the Contracting Officer two (2) legible copies of test data summary sheets, and supporting raw lab data, for each boring sampled and tested. The summary sheets will present a written continuous log of the boring and summarize the laboratory test results obtained.

Summary sheets will be carefully prepared in such a manner that the data presented will be readily usable by the Contracting Officer. The Contracting Office will provide an example test data summary sheet for reference. Along with the summary sheets, the supporting test data for each test done will be attached. Computer-generated test results for laboratory tests including for sieve analysis, particle sized distribution, all strength tests, and consolidation tests will be provided by the Contractor. In addition to the test data summary sheets and supporting test data, the Contractor will furnish the tabulated data on compact disks (CDs) in a Microsoft Excel 2007 spreadsheet file or later version if requested (AM#1)in the individual task order. The above described deliverables will be provided with the Final Report as described in FINAL REPORTS unless otherwise specified (AM#1)in an individual task order.

A report in the gINT boring log format (using gINT Version 8.2 or greater) will be provided to include soil information from the lab test reports and field logs, such as material classification, consistency, and any additional lab observations. Where a difference in material color or differences is noted from the lab versus what was recorded in the field, the lab assessment will govern in the gINT logs. The logs will also include the horizontal coordinates and elevation (X, Y & Z) of each boring, in accordance with SURVEYING INVESTIGATION LOCATIONS, or as otherwise specified in the individual task orders. The Contractor will use the Government provided standard COE gINT boring log template. If no template is provided, the gINT software default template will be used. Throughout the course of the contract, the Government will reserve the right to provide an alternative gINT template to be used based on project specific goals for a given task order. Paper copies, electronic copies, and gINT files, will be provided of each boring log report as a deliverable included in the Final Report described in FINAL REPORTS unless otherwise specified in an individual task order.

3.11 SURVEYING INVESTIGATION LOCATIONS

3.11.1 Equipment

Survey and GPS equipment specifications, and any other requested information pertaining to the equipment to be used by the Contractor for locating investigation locations, will be submitted to the Contracting Officer for review and approval prior to commencement of work. Survey and GPS equipment, used for locating the investigation locations (AM#1)for a given task order, will be of a type intended and suitable for use in areas as required by this contract. At land and marsh based investigation locations, the equipment will provide a minimum of third-order accuracy for

SECTION 02 32 00.00 45 Page 17 both the horizontal and vertical position.

3.11.2 Personnel for Third Order Accuracy Surveys

Field survey crews will include a lead surveyor with minimum of five (5) years combined experience in performing both topographic and hydrographic surveying. Survey helpers working under the lead surveyor will be thoroughly competent with topographic and hydrographic survey techniques and practices. The Contracting Officer reserves the right to require removal and replacement of incompetent personnel and will have the final determination of whether personnel are incompetent.

3.11.3 Datum

3.11.3.1 Vertical Control for Land and Marsh

For land and marsh based locations, all vertical control will be tied to the North American Vertical Datum of 1988 (NAVD88), as established by the National Geodetic Survey (NGS).

3.11.3.2 Horizontal Control

All horizontal control will be referenced to the North American Datum of 1983 (NAD83) and will be tied to the Texas State Plane Coordinate System, South Central, or South Zone depending on the location of the site.

3.11.3.3 Monument Accuracy Verification

Monuments used by the Contractor as a basis for vertical and horizontal control will first be verified for accuracy by the Contractor by reference checking the control monument X, Y, and Z coordinates against the published coordinates and elevations of two (2) neighboring NGS monuments in the area.

3.11.3.4 Conversions

Unless otherwise requested (AM#1)in a given task order, points recorded in final deliverables discussed below will be provided with reference to the horizontal and vertical datum discussed above for land, marsh, and water based investigations. In some instances, conversions of the data to other horizontal or vertical datums may be requested by the Government for a particular project. This will be considered a subsidiary obligation of the Contractor.

3.11.4 Survey Deliverables

3.11.4.1 Driller's Logs

The horizontal coordinates and elevation (X, Y & Z) for each boring location will be included on the Driller's logs as described in RECORDS.

3.11.4.2 gINT Logs

The horizontal coordinates and elevation (X, Y & Z) for each boring location will be included on the final gINT logs developed from field and laboratory test data.

3.11.4.3 Field Vane Shear, HCPT, Pipe Probing, and Electronic CPT

The horizontal coordinates and elevations (X, Y & Z) for each field

SECTION 02 32 00.00 45 Page 18 investigation location will be included on the data sheets in which the field test data are included with the Final Report.

3.11.4.4 MicroStation Files

Surveys of boring locations will be provided in a digital computer file capable of being loaded directly to the Galveston District's Computer Graphic System. CAD files will not be submitted in a format other than native MicroStation V8i (SS-(AM#1)32 or above) (.dgn) as stated below. Use of AutoDesk products with conversions to MicroStation format will not be accepted. The files will be provided on CD and included with the Final Report.

The Contractor will use the appropriate seed files (furnished to the Contractor) with the correct working units and geospatial coordinate system attached for all civil, geotechnical, and mapping drawings/layouts for the area of work. The Contacting Officer will furnish the Contractor a CD containing the following files:

border.dgn (border sheet) digimap.cel (cell library) fontlib.vax (font library) galdef.tbl (color table) levels.wpd (level assignments) seed2d.dgn (2d seed file) seed3d.dgn (3d seed file) da1959.dgn (description card)

Submittals will be delivered on CD and will include CAD file name(s), compressed file name(s) (if applicable), tape label name (if applicable), contractor name, contract (AM#1)number and task order numbers, submittal date, issue description, contact name, and contact phone number. A means to unzip zipped files will be provided or all files will be made self extracting. Additionally, a coma delimited ASCII file and a hard copy (on 8.5-inch x 11-inch paper) listing all CAD files included in submittal, the file date, and the sheet title the file corresponds to, will accompany the CDs when submitted.

The points will be properly geo-referenced in MicroStation to allow for later use as a reference file in other Galveston District MicroStation drawings. The drawing files will contain the precise location of the investigation location points, shown as a cross hair or dot, with the data point number and elevation in feet to two decimal places. The drawing files will also contain a table of monument data used in the surveys, a north arrow, grid tick marks, a scale, and a title block with company name, draftsmen, reviewer of draftsmen's work, and date file was created.

3.11.4.5 ASCII File Format

The surveys points of investigation locations will be also provided in the ASCII formats. Files may be comma or tab delimited.

Random Points File.RAN X Coordinates Y Coordinates Z Coordinates Code Description

Breakline Points File.BRK X Coordinates Y Coordinates Z Coordinates Code Description

SECTION 02 32 00.00 45 Page 19

Note: First point of breakline starts with code 0. All other points along breakline are code 1.

3.12 FINAL REPORTS

After the required core drilling and/or laboratory testing is concluded, the Contractor will furnish the Contracting Officer a final report covering the work performed. The report will be prepared by a professional engineer or geologist (see REPORTER). The report will include, as applicable, the boring layout, test data summary sheets, supporting raw and computer-generated test data and results, the gINT logs and files, survey deliverables, and a description of any unusual subsurface conditions or difficulties in drilling that were encountered. The Contractor will provide a separate summary sheet for each boring so that information about the boring can be used to populate the District's Geographical Information System. The following information will be included in the records:

a. Depth of water (if applicable).

b. Elevation of the top of the boring in the datum specified (AM#1)herein.

in the respective task orders.

c. The horizontal position of each boring in the datum specified (AM#1)herein.in the respective task orders.

In addition, the Contractor will furnish an electronic version in the form of a scanned image of each…