Attachment 18- Fort Drum JOC Specs derived from Front Range SABER 2015.pdf

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SECTION 02 32 00

SUBSURFACE DRILLING, SAMPLING, AND TESTING

PART 1 GENERAL

1.1 REFERENCES

1.1.1 The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only. Unless other wise noted, the latest published version and/or revision shall be used.

1.1.1.1 ASTM INTERNATIONAL (ASTM)

a. ASTM D1452 Soil Investigation and Sampling by Auger Borings

b. ASTM D1586 Penetration Test and Split-Barrel Sampling of Soils

c. ASTM D1587 Thin Walled Tube Sampling of Soils for Geotechnical Purposes

d. ASTM D 2113 Rock Core Drilling and Sampling of Rock for Site Investigation

e. ASTM D 2487 Soils for Engineering Purposes (Unified Soil Classification Sys-tem)

f. ASTM D 2488 Description and Identification of Soils (Visual-Manual Proce-dure)

1.1.1.2 U.S. ARMY CORPS OF ENGINEERS (USACE)

a. EM 1110-1-1906 Soil Sampling

1.2 UNIT PRICES

1.2.1 All measurements for payment shall be made by or in the presence of the Contracting Officer.

The Contractor shall preserve all holes in good condition until final measurement and until the records and samples have been examined and accepted. Payment will be made only for drilling and pressure testing those holes or for excavating those test pits that are included in the

SCHEDULE OF DRILLING, SAMPLING, AND TESTING, or are directed by the Contracting

Officer to be so drilled or excavated. Payment will not be made for any hole or testing for which satisfactory records (and samples), as determined by the Contracting Officer, are not furnished.

1.2.2 Mobilization and Demobilization

1.2.2.1 Payment

a. Payment will be made for costs associated with mobilization and demobilization. Sixty percent of the Mobilization and Demobilization lump-sum price will be paid following completion of moving onto the site, including complete assembly in working order, of all equipment neces-sary to perform the required drilling, sampling, pressure-testing and test pit excavation opera-tions. The remaining 40 percent of the contract lump sum price will be paid after all site resto-ration is completed and all equipment has been removed from the site. No separate payment will be made for moves between holes or test pits.

1.2.2.2 Unit of Measure

a. Unit of measure: lump sum.

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1.2.3 Auger Boring and Sampling of Drill Holes

1.2.3.1 Payment

a. Payment will be made for costs associated with Auger Boring and Sampling, [_____] mm

(inch) Diameter Drill Holes.

1.2.3.2 Measurement

a. Auger Boring and Sampling, [_____] mm (inch) Diameter Drill Holes will be measured for payment to the nearest 300 mm (linear foot), based upon the linear meters (feet) of holes that were actually drilled through overburden with augers in accordance with the specifications.

Measurements will be made from the original ground surface.

1.2.3.3 Unit of Measure

a. Unit of measure: linear meter (foot).

1.2.4 Drive Sample Boring and Sampling

1.2.4.1 Payment

a. Payment will be made for costs associated with Drive Sample Boring and Sampling, - [_____] mm (inch) Diameter Samples.

1.2.4.2 Measurement

a. Drilling for drive sample boring and sampling will be measured for payment to the nearest 300 mm( linear foot), based upon the linear meters (feet) of holes that were actually drilled by drive-sample-boring methods in accordance with the specifications. Measurements will be made from the original ground surface.

1.2.4.3 Unit of Measure

a. Unit of measure: linear meter (foot).

1.2.5 Undisturbed Sample Boring and Sampling

1.2.5.1 Payment

a. Payment will be made for costs associated with Undisturbed Sample Boring and Sampling, [_____] mm (inch) Diameter Samples.

1.2.5.2 Measurement

a. Drilling for undisturbed sample boring and sampling will be measured for payment to the near-est 300 mm (foot), based upon the linear meters (feet) of holes that were actually drilled by un-disturbed sampling methods in accordance with the specifications. Measurements will be made from the original ground surface.

1.2.5.3 Unit of Measure

a. Unit of measure: linear meter (foot).

1.2.6 Core Hole Overburden Drilling, Without Sampling

1.2.6.1 Payment

a. Payment will be made for costs associated with Core Hole Overburden Drilling, Without Sam-

02 32 00 - 3 pling, [_____] mm (inch) Diameter Drill Holes, [Vertical] [Inclined].

1.2.6.2 Measurement

a. Core hole drilling through overburden in order to permit core drilling of rock for [vertical] [in-clined] holes where sampling of overburden is not required will be measured for payment to the nearest 300 mm (foot), based upon the linear meters (feet) of hole actually drilled and cased in accordance with these specifications.

1.2.6.3 Unit of Measure

a. Unit of measure: linear meter (foot).

1.2.7 Core Drilling, [Vertical] [Inclined] Holes

1.2.7.1 Payment

a. Payment will be made for costs associated with Core Drilling [Vertical] [Inclined] Holes for

[_____] mm (inch) Diameter Cores.

1.2.7.2 Measurement

a. Core Drilling [Vertical] [Inclined] Holes for [_____] mm (inch) Diameter Cores will be meas-ured for payment to the nearest 300 mm (foot), based upon the linear meters (feet) of hole actu-ally drilled in rock in accordance with the specifications.

1.2.7.3 Unit of Measure

a. Unit of measure: linear meter (foot).

1.2.8 Pressure Testing (Hydraulic)

1.2.8.1 Payment

a. Payment will be made for costs associated with Pressure Testing (Hydraulic).

1.2.8.2 Measurement

a. Pressure Testing (Hydraulic) will be measured for payment based upon the number of hours that pressure testing (hydraulic) was actually performed at the direction of the Contracting Of-ficer and in accordance with the specifications or as otherwise required. Pressure testing (hy-draulic) will be measured from the time the pressure testing is begun at the direction of the

Contracting Officer to the time of completion of the test as determined by the Contracting Of-ficer. Time spent in placing packer elements in the holes, raising or lowering the packer ele-ments from one lift to another, or removing the packer elements from the holes and time spent in preparation for testing will not be included.

1.2.8.3 Unit of Measure

a. Unit of measure: hour.

1.2.9 Test Pit Excavation

1.2.9.1 Payment

a. Payment will be made for costs associated with excavating test pits in accordance with [this section] [Section 01 22 00.00 10 MEASUREMENT AND PAYMENT].

1.2.9.2 Measurement

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a. Test Pit Excavation will be measured for payment based upon the contract unit price for each test pit excavated, [which includes the cost of all shoring materials].

1.2.9.3 Unit of Measure

a. Unit of measure: each.

1.2.10 Test Pit Undisturbed Sample

1.2.10.1 Payment

a. Payment will be made for costs associated with undisturbed sampling in a test pit in accordance with [this section] [Section 01 22 00.00 10 MEASUREMENT AND PAYMENT].

1.2.10.2 Measurement

a. Test Pit Undisturbed Sample will be measured for payment based upon the contract unit price for each sample obtained.

1.2.10.3 Unit of Measure

a. Unit of measure: each.

1.2.11 Material for Shoring/Lining Pit Excavation

1.2.11.1 Payment

a. Payments will be made for costs associated with Shoring/Lining Test Pit Excavations at the contract unit price for each test pit excavation.

1.2.11.2 Measurement

a. Material used for shoring/lining test pit excavations will be measured for payment based upon the amount of material actually used as directed by the Contracting Officer for shoring/lining the excavations. Material salvaged and re-used at the direction of the Contracting Officer will be paid for at the rate of 30 percent of the contract unit price.

1.2.11.3 Unit of Measure

a. Unit of measure: each.

1.2.12 Casing Left in Drill Holes

1.2.12.1 Payment

a. Payment will be made for costs associated with Casing Left in Drill Holes, [_____] mm (inch)

Diameter.

1.2.12.2 Measurement

a. Casing Left in Drill Holes will be measured for payment to the nearest 300 mm (foot), based upon the linear meters (feet) of casing actually left in the drill holes at the direction of the Con-tracting Officer.

1.2.12.3 Unit of Measure

a. Unit of measure: linear meter (foot).

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1.3 SYSTEM DESCRIPTION

1.3.1 The Contractor shall 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] [core drilling] [pressure testing] [test pits]

1.3.2 Auger Borings and Sampling

1.3.2.1 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 shall be performed in accordance with [Chapter [_____], EM

1110-1-1906] [ASTM D 1452], [as directed by the Contracting Officer].

1.3.3 Drive Sample Borings and Sampling

1.3.3.1 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 ma-terials. Drive sample boring and sampling shall be performed in accordance with [Chapter

[_____] of EM 1110-1-1906] [ASTM D 1587] [as directed by the Contracting Officer].

Standard Penetration Tests (SPT) shall be performed in accordance with [Appendix

[_____] of EM 1110-1-1906] [ASTM D 1586].

1.3.4 Undisturbed Sample Borings and Sampling

1.3.4.1 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 shall be accomplished in accordance with [Chapter

[_____] of EM 1110-1-1906] [ASTM D 1587] [as directed by the Contracting Officer].

1.3.5 Core Drilling

1.3.5.1 Drilling of cores shall be [by any approved standard and accepted method of rotary rock core drilling that will provide continuous and complete rock cores of the required diameter from any subsurface interval of bedrock specified for investigation] [performed as per

ASTM D 2113]. The method used shall provide equally good recovery of cores from both hard and soft rocks.

1.3.6 Pressure Testing (Hydraulic)

1.3.6.1 Hydraulic pressure testing is the process of forcing water under pressure into subsurface rock formations through pre-drilled holes for the purpose of determining the subsurface leakage conditions and possible grouting requirements.

1.3.7 Test Pit Excavation and Sampling

1.3.7.1 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 in-spection and photographing of the subsurface soils and manual undisturbed sampling from within the test pit. All test pits shall be excavated, dewatered (if necessary), shored/lined

02 32 00 - 6 and protected from surface water drainage in accordance with all applicable Federal, State, local, Corps of Engineers, and OSHA safety regulations.

1.4 SUBMITTALS

1.4.1 Government approval may be required on any of the following items. Items requiring submittals will be listed on the Submittal Register. Provide copies of all submittals per the requirements in

Section 01 33 00, Submittal Procedures, or as listed on the Submittal Register.

1.4.2 Government approval is required for submittals with a "G" designation; submittals not having a

"G" designation are for [Contractor Quality Control approval.][Information only.] When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] The following shall be submitted in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

1.4.2.1 SD-02 Shop Drawings

a. Drilling Log[; G][; G, [_____]]

(1) The Contractor shall 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 he may be directed] [within [_____] days after a [hole] [test pit] is completed].

1.4.2.2 SD-03 Product Data

a. Permits, Certifications, and Licenses

(1) Copies of all permits, certifications, and licenses prior to starting work.

b. Schedule of Drilling, Sampling, and Testing[; G][; G, [_____]]

(1) Prior to starting work, the Contractor shall submit a plan for drilling, sampling, testing, and safety. The plan shall include, but shall 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 subcon-tractors 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. This submittal shall also in-clude a statement of the prior experience, in the type of work described in these specifica-tions, of the person or persons designated to perform the work specified herein. No work shall 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.

1.5 QUALITY ASSURANCE

1.5.1 Qualifications

1.5.1.1 The Contractor shall provide a qualified, licensed Geologist experienced in subsurface ex-ploration for each drill unit to oversee all drilling, sampling, and field testing operations.

This individual shall be responsible for the preparation of a separate log and/or report for each boring, pressure test, or test pit. This individual shall also be responsible for the preparation of all soil and rock samples for delivery to the designated point.

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

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1.5.2 Regulatory Requirements

1.5.2.1 The Contractor shall comply with all Federal, State and local laws, regulations and ordi-nances relating to the performance of this work. The Contractor shall procure all required permits, certifications and licenses required by Federal, State, and local law for the execu-tion of this work

1.6 DELIVERY, STORAGE, AND HANDLING

1.6.1 General

1.6.1.1 The Contractor shall be solely responsible for preserving all samples in good condition.

Samples shall be kept from freezing and from undue exposure to the weather, and shall keep all descriptive labels and designations on sample jars, tubes, and boxes clean and leg-ible until final delivery of samples to, and acceptance by, the Contracting Officer. Except as otherwise specified, the Contractor shall deliver samples to [_____]. Samples shall be delivered within the time limits specified for each type of investigation or in accordance with schedules prepared by the Contracting Officer.

1.6.2 Undisturbed Samples

1.6.2.1 Every precaution shall be taken to avoid damage to samples as a result of careless han-dling and undue delay in shipping. Samples shall be shipped in containers approved by the Contracting Officer and shall be of sufficient durability to protect the samples from any damage during shipment. The sample tubes shall be well packed in vermiculite or other equal material approved by the Contracting Officer to protect the samples against vibration. The Contractor shall avoid exposing sealed and crated samples to precipitation, direct sunlight, freezing and temperatures in excess of 38 degrees C (100 degrees F).

Samples permitted to freeze, even partially, shall be replaced by the Contractor. In gen-eral, no undisturbed samples shall remain on the site of sampling for more than one week before shipment. Samples shall be stored and shipped with the tube in a [horizontal] [ver-tical] position in order to prevent consolidation and segregation or change of water con-tent.

1.7 PROJECT / SITE CONDITIONS

1.7.1 Environmental Requirements

1.7.2 [The Contractor shall comply with Section 01 57 20.00 10 ENVIRONMENTAL

PROTECTION.]

1.7.3 [In order to prevent and to provide for abatement and control of any environmental pollution arising from Contractor activities in the performance of this contract, the Contractor and its

Subcontractors shall comply with all applicable Federal, State, and local laws, regulations, and ordinances concerning environmental pollution control and abatement.

1.7.3.1 The Contractor shall be responsible for keeping informed of all updates and changes in all applicable laws, regulations, and ordinances.

1.7.3.2 The Contractor shall not pollute lakes, ditches, rivers, springs, canals, waterways, groundwaters, or reservoirs with drill fluids, fuels, oils, bitumens, calcium chloride, insec-ticides, herbicides, or other materials that may be harmful to the environment or a detri-ment to outdoor recreation.]

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1.7.4 Existing Conditions

1.7.4.1 Field Measurements

a. The approximate locations of [drill holes] [test pits] [_____] are shown on the attached draw-ings. The actual locations will be established in the field by the Contracting Officer prior to the start of work. The elevations of the established locations will also be provided by the Contract-ing Officer prior to the start of work. The Contractor will provide access to the locations as necessary for the prosecution of the work. Since no separate payment will be made for access construction, all costs associated with this shall be included in the cost of [drilling] [excavat-ing].

1.8 SEQUENCING AND SCHEDULING

1.8.1 Schedule of Drilling, Sampling, and Testing

1.8.1.1 The schedule of Drilling, Sampling, and Testing is [shown on the drawings.] [listed in the following schedule:]

Schedule of Drilling, Sampling, and Testing

[Hole No.]

[Pit No.] Method

Depth

(meters)

Vertical or

Inclined Special Instructions

Schedule of Drilling, Sampling, and Testing

[Hole No.]

[Pit No.] Method

Depth

(feet)

Vertical or

Inclined Special Instructions

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1.8.2 Order of Work

1.8.2.1 [The Contractor shall commence operations on [Hole No. [_____]] [Test Pit No. [_____]]

[_____] and proceed so as to complete [Holes] [Test Pit] [Nos. [_____], [_____], and

[_____]] before starting [Hole] [Test Pit] Nos. [_____] and [_____].]

[The order in which the work is to be accomplished will be determined in the field by the

Contracting Officer.]

[It is intended that the [drilling] [test pit excavating] [_____] be accomplished in the nu-merical sequence indicated in the [SCHEDULE OF DRILLING, SAMPLING, AND

TESTING shown on the drawings] [listed in paragraph SCHEDULE OF DRILLING, SAMPLING, AND TESTING]; however, the Contracting Officer may vary the order whenever and in whatever manner is deemed best for accomplishing the work.

a. The Contractor shall provide a qualified, licensed Geologist experienced in subsurface explora-tion for each drill unit to oversee all drilling, sampling, and field testing operations. This indi-vidual shall be responsible for the preparation of a separate log and/or report for each boring, pressure test, or test pit. This individual shall also be responsible for the preparation of all soil and rock samples for delivery to the designated point.

b. The presence of a Government representative or the keeping of separate drilling records by the

Contracting Officer shall not relieve the Contractor of the responsibility for the work specified in this specification.]

1.9 RELATED REQUIREMENTS

1.9.1 The information provided in this section applies to all other specification sections that are applicable to project.

PART 2 PRODUCTS

2.1 CONTAINERS

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

2.1.1.1 Sample Jars

a. Sample jars shall be [0.5 L (1 pint)] [1.0 L (1 quart)] capacity, wide-mouth [over 57 mm (2-1/4 inches) in diameter] [glass] [plastic] jars with moisture-tight screw tops.

2.1.1.2 Shipping Boxes

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a. Boxes for shipping sample jars shall be [corrugated cardboard] [wooden] boxes that have the capacity to hold no more than 12 sample jars and the strength to contain and protect the jars and their contents under ordinary handling and environmental conditions.

2.1.1.3 Tubes and Crates

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

2.1.1.4 Core Boxes

a. Longitudinally partitioned, hinged top, wooden core boxes constructed of plywood and dressed lumber or other approved materials in general accordance with the arrangement and dimensions shown in FIGURE 1 shall be used for all rock cores. As many core boxes as may be required shall be used to box all core. Core boxes shall be completely equipped with all necessary parti-tions, hinges, and a hasp for holding down the cover. In addition, the Contractor shall provide wood spacers made of surfaced lumber (not plywood) and having dimensions that are 3 mm

1/8 inch) less than the inside dimensions of the individual core box troughs and no less than 19 mm (3/4 inch) thick for blocking the core in the boxes and for providing a marking space to identify core runs and pull depths/elevations. The quantities of these blocks that are required are: ten blocks per core box for 75 mm (3 inch) or smaller core, five blocks per core box for

100 mm (4 inch) and PQ core, and three blocks per core box for 150 mm (6 inch) core. The box should have the following capacities:

(1) 150-mm core single row of core

(2) 100-mm or PQ core 2 rows of core

(3) 75-mm or smaller core 3 or 4 rows of core

(6-inch core single row of core

4-inch or PQ core 2 rows of core

3-inch or smaller core 3 or 4 rows of core)

The maximum length of a core box shall be 1.2 m (4 feet) for 75 mm (3 inch) or smaller core and shall be dimensioned so that a box will hold 3.6 to 4.9 m (12 to 16 feet) of core. The max-imum length of a core box for core that is larger than 75 mm (3 inches) shall be 1.5 m (5 feet).

2.2 LABELS

2.2.1.1 Sample Jar Labels

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

PROJECT __________________________ LOCATION __________________________

(Such as Table Rock Dam) (Such as Borrow Area B)

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HOLE NO. _________________________ STATION ____________________________

JAR NO. _________ of _________ JARS

TOP ELEV. OF HOLE ________________ DEPTH OF SAMPLE __________________

DESCRIPTION OF MATERIAL ______________________________________________

(Such as moist, silty7, medium sand)

2.2.1.2 Shipping Box Labels

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

PROJECT: [_____]

LOCATION: [_____]

JAR SAMPLES FROM HOLE OR HOLES: [_____]

2.2.1.3 Core Box Labels

a. Core boxes shall be identified with stenciled labels. The information on this label shall contain the following:

PROJECT: [_____]

HOLE NO. [_____]

BOX NO. [_____]

TOTAL NUMBER OF BOXES FOR THE HOLE: [_____]

PART 3 EXECUTION

3.1 MOBILIZATION AND DEMOBILIZATION

3.1.1 Mobilization

3.1.1.1 Mobilization shall consist 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

3.1.2.1 Demobilization shall consist 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 Con-tracting Officer, the cleanup and removal of all scrap, waste backfill material, waste drill-ing 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 con-

02 32 00 - 12 dition as possible.

3.2 EQUIPMENT AND SUPPLIES

3.2.1 Auger Boring and Sampling

3.2.1.1 The equipment to be furnished by the Contractor for making auger borings shall include, but not be limited to, standard continuous flight augers and/or standard cup-type earth au-gers, similar or equal to the Iwan Auger and not less than 100 mm (4 inches) in diameter unless otherwise approved. The augers shall be completely equipped with all the accesso-ries necessary for boring and sampling of overburden materials to the depths and diame-ters specified or shown on the drawings.

3.2.2 Drive Sample Boring and Sampling

3.2.2.1 Equipment to be furnished by the Contractor for making drive sample borings shall in-clude, but not be limited to, standard [50 mm (2-inch) OD] [[_____] mm (inch) OD] [split barrel] [solid barrel] drive samplers and power-driven drilling machinery of a type or types approved by the Contracting Officer, complete with a [_____] kN drive-hammer

(drive-hammer of [_____]-pound weight) and all other accessories for taking samples of all types of soils or decomposed rock at the locations and to the depths indicated [in the

SCHEDULE OF DRILLING, SAMPLING, AND TESTING shown on the drawings] [in the schedule in paragraph SCHEDULE OF DRILLING, SAMPLING, AND TESTING].

The drive shoe for the split barrel samplers shall be of hardened steel and shall be replaced or repaired when it becomes dented or distorted. Supplies shall 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.

3.2.3 Undisturbed Sample Boring and Sampling

3.2.3.1 Equipment to be furnished by the Contractor for making undisturbed sample borings shall include, but not be limited to, power-driven drilling machinery of an approved type or types complete with the special devices and accessories enumerated and described herein-after. Drilling machinery shall be of the hydraulic feed type. Supplies shall 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, shall be of such minimum inside diameter as to allow use of the selected sampler.

a. Sands and Cohesive Soils: The sampling device used to sample fine to medium grain sands and cohesive soils shall be a fixed or stationary piston type that uses a [75-mm (3-inch)] [125-mm

(5-inch)] diameter thin wall Shelby tube. [Subject to the approval of the Contracting Officer, floating or free piston and non-piston type samplers may be used provided adequate means, such as check valve or vacuum system, are provided to prevent loss of samples.]

b. Stiff and Dense Soils: The sampling device for obtaining samples of stiff and dense soils shall 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.

3.2.4 Core Drilling - [_____] mm (inch) Diameter Core

3.2.4.1 Equipment to be furnished by the Contractor for core drilling shall include core-drilling machinery of a type or types approved by the Contracting Officer complete with all the accessories needed to take continuous rock cores of a diameter consistent with bit size to the depths specified. The Contractor shall use, as a minimum, a standard ball-bearing, 02 32 00 - 13 swivel-head, double-tube core barrel, or equivalent. The capacity of the core barrel shall not exceed 3.2 m (10.5 feet) of core. Supplies for core drilling to be furnished by the Con-tractor shall include, but not be limited to, all casing, drill rods, core barrels, coring bits, piping, pumps, water, tools, and power required for drilling and all boxes and containers required for core samples. Selection of the type of bit shall be at the Contractor's discre-tion provided that the selected bit produces high quality rock core. (see paragraph

SUPPLEMENTAL [BORINGS] [PITS]). [The Contractor's drilling equipment shall be capable of drilling inclined as well as vertical core holes as specified.]

3.2.5 Pressure Testing (Hydraulic)

3.2.5.1 Pressure testing equipment to be furnished by the Contractor shall include, but not be lim-ited to, the following: water pump with a minimum capacity of 3.15 L/second (50 gpm) that is capable of delivering a constant discharge pressure of [_____]kPa (psi), double ex-pander packers with rubber expansion elements set [1.5] [3] [_____] m ([5] [10] [_____] feet) apart with piping so arranged that water may be admitted either below the bottom packer element or between the two packer elements, a pressure relief valve, a pressure gage capable of measuring water pressures to the nearest [_____] kPa (psi) and water me-ter capable of measuring flows to the nearest [_____]0.1 L/second (gpm). Supplies shall include, but not be limited to, all accessory valves, gages, surge tanks, stopcocks, plugs, expanders, potable water for testing, standby pumps, fuels, pipes, pressure hose, and tools necessary for maintaining uninterrupted tests for each boring to be tested. The pressure test equipment shall be configured so that the pressure gage is located at the top of the hole, a by-pass water line and valve are located between the pump and the gage, a flow meter is located between the by-pass and the pressure gage, and a valve is located in the line between the flow meter and the pressure gage. All equipment and supplies used for pressure testing shall be approved by the Contracting Officer prior to use.

3.2.6 Test Pit Excavation and Sampling

3.2.6.1 Selection of the test pit excavation, shoring/lining and dewatering (if necessary) methods and equipment shall be at the Contractor's discretion but must be approved by the Con-tracting Officer. When the number of test pits to be excavated is large, and when adapta-ble mechanical trenching equipment is available, the Contracting Officer may require that such mechanical excavating equipment be used to expedite completion of the pits. Sup-plies which the Contractor shall furnish for obtaining undisturbed samples shall include, but not be limited to, split metal cylinders and/or metal or wooden boxes of acceptable sizes and types. The minimum inside dimensions of the cylinders shall be [_____] mm

(inches) in diameter by [_____] mm (inches) in length. The wooden boxes shall be cubic in shape with a minimum inside dimension of [_____] mm (inches). Accessories to be supplied by the Contractor shall include, but not be limited to, a small sample trimming shovel or spade, hatchet, trimming knife, [_____] wax and facilities for melting and brush-ing same, trowels, labels, and boxes for shipping samples. The Contractor shall also fur-nish all materials required for shoring/lining to comply with all applicable safety regula-tions. The Contracting Officer may require the Contractor to salvage and re-use this shor-ing/lining material in successive test pits.

3.3 IDENTIFYING SAMPLES

3.3.1 Sample jars, shipping boxes, and labels shall comply with PART 2, paragraphs SAMPLE JARS, SHIPPING BOXES, and LABELS, respectively. [In addition, a moisture proof label containing the project name, hole number and sample number shall be placed inside the jar or this information can be written using a waterproof pen or scribed on the jar lid.] The Contractor shall

02 32 00 - 14 take all precautions required to insure that the shipping boxes are not subjected to rough handling or damaging environmental conditions [, and complies with paragraph CARE AND DELIVERY

OF SAMPLES]. [A copy of the boring log for the portion of the boring that the samples came from shall be enclosed in the shipping box.]

3.4 AUGER BORING AND SAMPLING

3.4.1 Samples shall be labeled in accordance with paragraph IDENTIFYING SAMPLES. Samples shall be obtained for each change of overburden material and at maximum vertical intervals of

[0.3] [1] [1.5] [_____] m ([1] [3] [5] [_____] feet) [as directed by the Contracting Officer]. In order to retain the natural moisture content of the material to the fullest extent possible, all samples shall be of sufficient volume to completely fill the sample jars and the samples shall be placed in the sample jars as soon as possible after they are taken from the hole. All sample jars shall be labeled. In general, no sample shall remain on the site of boring for more than 1 week after being taken from the boring and placed in a jar.

3.5 DRIVE SAMPLE BORING AND SAMPLING

3.5.1 Samples shall be labeled in accordance with paragraph IDENTIFYING SAMPLES. Drive sample borings drilled through overburden materials shall be suitably cased to permit obtaining drive samples of the size or sizes specified or as directed. Samples shall be taken either continuously or at maximum vertical intervals of [1] [1.5] [_____] m ([3] [5] [_____] feet) or at a change in materials [in accordance with instructions contained in the SCHEDULE OF

DRILLING, SAMPLING, AND TESTING] [as shown on the drawings] or as otherwise directed by the Contracting Officer. The sampler shall be driven with the force of the [620 (140)] [_____]

N (pound) drive hammer under a free fall of [_____] mm (inches). To minimize the compacting effect of casing driving when casing is used to stabilize a boring, the bottom of the casing shall 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 shall be obtained from a dry hole. Below the water table, water shall 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 shall be done by such means that will prevent inclusion of drilling fluid in the samples. The samples shall be placed in sample jars as soon as possible after they are taken from the hole and, when possible, the volume of the sample shall 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 shall be labeled. No sample shall remain at the site of boring for more than one week after being taken from the hole.

3.6 UNDISTURBED SAMPLE BORING AND SAMPLING

3.6.1 In general, labeling of undisturbed samples shall conform to paragraph IDENTIFYING

SAMPLES. Particular care shall be taken to indicate the top and bottom of each sample tube.

Tubes and crates for undisturbed samples shall be labeled "DO NOT JAR OR VIBRATE" and

"HANDLE, HAUL, AND SHIP IN A [HORIZONTAL] [VERTICAL] POSITION".

3.6.1.1 Procedure

a. The procedure for Undisturbed Sample Boring and Sampling shall be the same as outlined in paragraph DRIVE SAMPLE BORING AND SAMPLING, except that the sampling device shall be advanced downward by one continuous, smooth drive using the drill rig's hydraulic

02 32 00 - 15 feed system. The hydraulic down pressure shall be read and recorded at 150 mm (6 inch) inter-vals during each sample drive. The sampling device for stiff and dense soils shall be advanced by continuous rotation of the outer cutting barrel in conjunction with use of drill fluid circula-tion. Driving of any undisturbed sampling device by means such as a drop hammer will not be permitted.

3.6.1.2 Sealing

a. Alternate 1

(1) The soil sample obtained in a thin wall Shelby tube shall be retained in the tube and sealed on both ends with a mechanically expandable O-ring sealing disk of the appropri-ate size.

b. Alternate 2

(1) The soil sample obtained in a thin wall Shelby tube shall be extruded from the tube in the field as soon as the tube is removed from the boring by a method approved by the Con-tracting Officer. The extruded soil sample shall immediately be wrapped in [aluminum foil] [thin plastic wrap] and placed in the center of a [metal bottomed, waxed cardboard]

[plastic] tube that has a diameter of at least 25 mm (1 inch) larger than the diameter of the soil sample, is at least 25 mm( 1-inch) longer than the length of the soil sample, and has at least 13 mm (1/2-inch) of congealed [50/50 mixture of paraffin and microcrystalline wax] [microcrystalline wax] in the bottom. The annular space between the soil sample and the tube shall be filled with [a 50/50 mixture of paraffin and microcrystalline wax]

[microcrystalline wax] to a distance of at least 13 mm (1/2-inch) above the top of the soil sample.

c. Alternate 3

(1) Both ends of the soil sample tube/liner obtained with a Denison barrel, or its equivalent, shall be cleaned out to remove all drill fluid contaminated and/or disturbed soil or to a minimum distance of 50 mm 2 inches) from the ends of the tube/liner. Any material re-moved that is not contaminated with drill fluid shall be placed in a sample jar and labeled in accordance with paragraph IDENTIFYING SAMPLES. The cleaned out ends of the sample liner tube shall then be sealed with [a 50/50 mixture of paraffin and microcrystal-line wax] [microcrystalline wax]. A metal or wooden disk, having a diameter just slight-ly smaller than the inside diameter of the liner tube shall be inserted into the wax to a dis-tance of 6 mm (1/4-inch) from the end of the soil sample. The wax plugs shall be flush with the ends of the tube and a final seal consisting of a metal cap or tape shall be placed over the ends of the tube.

3.7 CORE HOLE OVERBURDEN DRILLING

3.7.1 [Where samples of overburden materials are required in connection with core drilling, the soil overburden shall be drilled and sampled in accordance with the applicable provisions for the type of samples required.] [Where sampling of the overburden materials is not required, the

Contractor may utilize any method and equipment for drilling and, if required, casing through the overburden that will not affect the quality of the core drilling from the rock surface downward in accordance with these specifications. The method chosen must be approved by the Contracting

Officer prior to starting any overburden drilling.]

3.8 CORE DRILLING - [_____] mm (inch) DIAMETER CORE

3.8.1 Procedure

02 32 00 - 16

3.8.1.1 All holes shall be drilled [vertically] [at the inclined angles [indicated in the SCHEDULE

OF DRILLING, SAMPLING, AND TESTING shown on the drawings] [listed in para-graph SCHEDULE OF DRILLING, SAMPLING, AND TESTING]] to the bottom eleva-tions or depths specified unless indicated in the schedule of borings or directed to be drilled otherwise. Off-setting of borings from the locations specified in the Plan of Bor-ings or as shown on the drawings, will not be permitted without prior approval. Casing through the overburden may be required. This casing shall be sealed in the rock at the el-evation where rock is encountered prior to commencement of rock coring. The Contractor shall operate his drills at such speeds and with such down pressures and shall control drill fluid pressures and quantities to insure maximum core quality and recovery in whatever kind of rock is encountered. Where soft or broken rock is encountered, the Contractor shall reduce the length of runs to 1.5 m (5 feet) or less in order to reduce and/or keep core loss and core disturbance to the minimum. Failure to comply with the foregoing proce-dures shall constitute justification for the Contracting Officer to require redrilling, at the

Contractor's expense, of any boring from which the core recovery is unsatisfactory. The

Contractor shall exercise particular care in recording zones of water loss, cavities, rod jerks, rough drilling and other unusual and non-ordinary coring experiences that, supple-menting the core record, will throw light on the nature and the extent of any fracturing or abnormalities.

3.8.2 Arrangement of Core

3.8.2.1 Core boxes shall comply with PART 2, paragraph 2.1.1.4 CORE BOXES. All cores shall be arranged neatly in the partitioned boxes in the same sequence in which they occurred before removal from the hole. Facing the open box with the hinged cover above and the open box below, cores shall be arranged in descending sequence beginning at the left end of the trough nearest the hinges and continuing in the other troughs from left to right. The highest part of the core shall be placed in box 1, and the lower portions of the core shall be placed in the other boxes in consecutive order.

3.8.3 Preservation of Core

3.8.3.1 Representative samples of core (not less than [_____] percent of the total core drilled) shall be wrapped in [aluminum foil] [thin plastic wrap] [cheese cloth] and then sealed by applying [paraffin wax] [microcrystalline wax] [50/50 mixture of paraffin and microcrys-talline wax] to the outside of the wrapping material prior to placing the core in the core box. This sealing process shall be accomplished as soon as possible after the core is re-moved from the core barrel. The minimum length of core that is preserved from each bor-ing shall be no less than 2.5 times the core diameter. Spacer blocks shall be marked and placed in the core box to show where samples have been removed.

3.8.4 Labeling, Marking and Packing Core

3.8.4.1 Stenciled labels for core boxes complying with paragraph 2.1.1.4 CORE BOX LABELS shall be placed on the inside and outside of the top cover in addition to each end. In addi-tion, the depths (or elevations) of each core run/pull shall be marked with a black water-proof pen on the spacer blocks that are placed between core pulls. When a box is full, the space between the core and the trough sides shall be filled with finely ground vermiculite or other packing material approved by the Contracting Officer.

3.8.5 Disposition of Core

3.8.5.1 While on site, the Contractor shall protect the filled core boxes from direct sunlight, pre-cipitation, and freezing by some form of Contracting Officer approved shelter that allows

02 32 00 - 17 ventilation to the boxes. Upon completion of core drilling and sampling operations, core boxes containing cores shall be [stored in an area provided by the Contracting Officer near the site of drilling] [shipped or delivered to [provide address]].

3.9 PRESSURE TESTING (HYDRAULIC)

3.9.1 [The Contractor shall pressure-test each hole in [1.5] [3] [_____] m ([5] [10] [_____] foot) sections commencing at the top of bedrock and progressing downward to the bottom of the hole or to such depths as determined by the Contracting Officer below which testing of the hole is not necessary.] [The Contractor shall pressure test the bottom [1.5] [3] [_____] m ([5] [10] [_____] foot) section of hole immediately after it is cored. After a [_____] m (foot) section is cored, the coring equipment will be removed from the section and a single rubber expansion packer placed at the top of the section (bottom of the previously tested section) and the section pressure tested.

After the pressure test is completed, the packer assembly shall be removed and the next [_____] m (foot) section cored and then pressure tested. This procedure shall be continued to the bottom of the hole or to depths determined by the Contracting Officer.] Where core data from the test holes indicate only isolated zones that are open or fractured, pressure testing may be limited by the Contracting Officer to these zones only. Water pressure employed for each lift shall be determined in the field by the Contracting Officer and shall not exceed 22.6 kPa per meter of depth( one pound per square inch per foot of depth) to the upper expander and, in no case, shall the pressure be greater than [_____] kPa (psi). The pressure test will be divided into two phases;

the first phase will be a flow test which shall then be followed by the second phase which is a duration test. In performing the first phase, water is pumped slowly at first, and the flow then gradually increased to the point where the predetermined maximum pressure is maintained, by adjusting the valve on the by-pass line. The allowable pressure shall be held for 1 minute before any readings are taken. The volume of flow into the test section shall be measured for a period of

5 minutes during which time the pressure shall not vary by more than 34.5 kPa (5 psi). After this

5-minute test, the second phase shall be started by closing the valve located between the flow meter and the pressure gage. The drop in pressure is then read for a period of 5 minutes at [15]

[30] [_____]-second intervals. In some situations, such as in a very tight formation, the

Contracting Officer may eliminate phase one of the test. The Contractor may be required to make check tests at his own expense if the testing equipment or its assembly and arrangement are found to be faulty during or after the testing of any holes. The Contractor shall record all gage and meter readings made during a pressure test on a suitable form approved by the Contracting

Officer. A sample form is shown in FIGURE 2 - PRESSURE TEST DATA FORM.

3.10 TEST PIT EXCAVATION AND SAMPLING

3.10.1 Excavation

3.10.1.1 The test pits shall be excavated in the order scheduled in [the SCHEDULE OF

DRILLING, SAMPLING, AND TESTING shown on the drawings] [paragraph

SCHEDULE OF DRILLING, SAMPLING, AND TESTING], and shall be excavated to depths and dimensions indicated [in paragraph SCHEDULE OF DRILLING, SAMPLING, AND TESTING] [on the drawings]. Before excavating pits, the Contractor shall thoroughly familiarize himself with work site and with all available subsurface data, particularly groundwater conditions. Regardless of the method of excavation employed, the pits shall be excavated [, dewatered] and shored/lined in conformance with all applica-ble safety regulations.

3.10.2 Sampling

3.10.2.1 Soil samples shall be obtained from each pit [at the depths/elevations indicated in para-

02 32 00 - 18 graph SCHEDULE OF DRILLING, SAMPLING, AND TESTING] [at depths of [_____] m (feet), [_____] m (feet), and [_____] m (feet),] [at depths determined by the Contracting

Officer]. A total of [_____] samples will be obtained from each test pit. In obtaining samples from test pits, the undisturbed in situ (in place) natural physical and structural characteristics of the sampled materials shall be preserved insofar as possible both while samples are being taken and during shipment to the point of testing. In cohesive and par-tially cohesive soils this may be accomplished by isolating the soil column or cube to be sampled by gently trenching around it and knife-trimming it to the required dimensions of the split cylinder or box. A thin coating of melted [50/50 mixture of paraffin and micro-crystalline] [microcrystalline] wax shall then be applied quickly but gently to the sample with a paint brush to seal it against loss of moisture. The metal or wooden sample con-tainer, with the top and bottom removed shall then be placed over the wax coated sample such that the sample is centered within the container and the top of the container sides are at least 25 mm (1 inch) above the top of the sample. The spaces between the sample and the side walls of the container shall then be filled with melted [_____] wax. After this wax has congealed, the space between the top of the sample container sides and the top of the sample shall be filled with [_____] wax. After this wax has congealed, it shall be trimmed so that when the top of the sample container is installed there is no void between the container top and the wax. After the container top is installed, the soil column or cube shall then be cut off a few hundred mm inches) below the container, the sample and con-tainer inverted and removed from the pit and the sample trimmed at the base so that the bottom of the sample is at least 25 mm (1 inch) below the bottom of the container. This space shall be filled with [_____] wax and, after the wax has congealed, it shall be trimmed so that when the bottom of the container is installed, there shall be no void be-tween the wax and the bottom of the container. Where overburden materials to be sam-pled are only partially cohesive, it is best not to expose the entire soil column before wax-ing. By exposing and waxing small sections at a time, the sample will be subjected to less disturbance. Where natural moisture content is an important factor, delay shall be avoided in taking the sample in order that the natural moisture content of the material may be re-tained to the fullest extent.

3.10.3 Disposition of Samples

3.10.3.1 Samples shall be packed in vermiculite or a packing material approved by the Contracting

Officer and shipped in sturdy wooden boxes of strength and construction sufficient to guarantee against damage during shipment. Boxes should be no larger than is required for shipping two such samples. All sample boxes shall be marked FRAGILE-HANDLE

WITH CARE and shall be identified by labels, similar to those as specified in paragraph

IDENTIFYING SAMPLES, attached to the outside of each box. Extreme care shall be taken to indicate the top and bottom of each sample. The Contractor shall avoid exposing sealed and crated samples to precipitation and extremes of temperature. Undisturbed samples permitted to freeze, even partially, shall be replaced by the Contractor at his ex-pense. The Contractor shall not hold these samples at the site of sampling for a period in excess of one week. Prior to shipment, each sealed and boxed sample shall be checked for correct labeling.

3.11 SUPPLEMENTAL [BORINGS] [PITS]

3.11.1 [Borings] [Pits] that are abandoned or from which [unsatisfactory samples or cores are obtained]

[less than…