B01. Final Solicitation.pdf

US Army Corps of Engineers St. Louis District

CONUS Drilling Services

COMBINED SYNOPSIS &

SOLICITATION W912P921R0037

This is a 100% HUBZone Small Business Set-Aside combined synopsis/solicitation for commercial items prepared in accordance with the format Federal Acquisition Regulation (FAR) Part 12.603, Streamlined solicitation for commercial items. Offers are being requested and a written solicitation will not be issued.

This Request for Proposal is numbered W912P9-21-R-0037. The North American Industry Classification System (NAICS) code for this acquisition is 213115 with a size standard of $8M dollars.

Please identify your business size in your response based upon this standard.

This solicitation document and incorporated provisions and clauses are those in effect through Federal Acquisition Circular 2021-02, dated 11-23-2020.

The government intends to award a contract without discussions with respective offerors. The government, however, reserves the right to conduct discussions if deemed in its best interest. Therefore, the offeror’s initial offer should contain the offeror’s best terms from a price and technical standpoint. The Government reserves the right to conduct discussions if later the Contracting Officer determines to be necessary.

Description: The purpose of the work specified herein is to provide information for the evaluation of subsurface conditions. Such information is dependent on accurate logs of the subsurface conditions and characteristics, the recovery of the highest percentage of sample possible, and the recording of natural conditions such as water levels. Access to sites to include clearing of overgrowth, brush or trees, drilling equipment, water for drilling, and repair of damage to exploration sites necessitated by access and/or the drilling process shall be part of the requirements. The amount of drilling and sampling which will be required is unknown and will be governed by conditions encountered as the work progresses. The Contracting Officer reserves the right to direct the sequence of work. The drilling, sampling, logging and other services (where required), shall be performed in accordance with the references indicated in 1.1.2 below, and shall utilize required geotechnical software for presentation of logs and other exploration reports and laboratory analysis, and shall be the most recent version of Bentley Systems HoleBASE Professional and KeyLAB software. The required configuration pack and any necessary templates will be provided by the Government, unless otherwise directed by the Contracting Officer. In addition, the Contractor shall have an appropriate Job Safety Hazard Analysis Plan in place for all types of drilling, sampling and analysis activities covered in this scope of work.

Please provide a completed copy of the provision at 52.212-3, Offeror Representations and Certifications – Commercial Items with your offer.

Additional Instruction is located in the addendum to 52.212-2 EVALUATION--COMMERCIAL ITEMS (OCT 2014).

Please submit any questions concerning this solicitation by 11:00 AM (CST) on Tuesday, July 13, 2021. Questions can be provided electronically to Contract Specialist (Allen Holmes), Allen.L.Holmes@usace.army.mil.

Please submit all proposals electronically to Contract Specialist, Allen Holmes, at the above email address by 11:00 AM (CST) on Monday, July 26, 2021.

Please fill out information below:

Contractor's Name:

Cage Code:

Dun's Number:

Contractor Signature;

CLIN Structure

CLIN DESCRIPTION QUANTITY/ UNIT UNIT COST TOTAL COST

0001 Base Year 1/JOB 1001 Option Year I 1/JOB 2001 Option Year II 1/JOB 3001 Option Year III 1/JOB 4001 Option Year IV 1/JOB 5001 Optional CLIN 1/JOB

FOUO SOURCE SELECTION INFORMATION (SEE FAR 3.104)

Section SF 1449 - CONTINUATION SHEET

PERFORMANCE WORK STATEMENT

PART I – GEOTECHNICAL EXPLORATION

1.0 Geotechnical Exploration

1.1 General. The purpose of the work specified herein is to provide information for the evaluation of subsurface conditions. Such information is dependent on accurate logs of the subsurface conditions and characteristics, the recovery of the highest percentage of sample possible, and the recording of natural conditions such as water levels.

Access to sites to include clearing of overgrowth, brush or trees, drilling equipment, water for drilling, and repair of damage to exploration sites necessitated by access and/or the drilling process shall be part of the requirements. The amount of drilling and sampling which will be required is unknown and will be governed by conditions encountered as the work progresses. The Contracting Officer reserves the right to direct the sequence of work. The drilling, sampling, logging and other services (where required), shall be performed in accordance with the references indicated in 1.1.2 below, and shall utilize required geotechnical software for presentation of logs and other exploration reports and laboratory analysis, and shall be the most recent version of Bentley Systems HoleBASE Professional and KeyLAB software. The required configuration pack and any necessary templates will be provided by the Government, unless otherwise directed by the Contracting Officer. In addition, the Contractor shall have an appropriate Job Safety Hazard Analysis Plan in place for all types of drilling, sampling and analysis activities covered in this scope of work.

1.1.1 Capabilities. The Contractor shall supply the necessary plant, equipment, manpower, materials, and supplies to permit land-based or overwater drilling, sampling and other services to a maximum depth of 300 feet below the working surface. If the Contracting Officer determines, as work progresses, that holes of greater depth are required, this additional drilling will be ordered in writing and paid for at a negotiated unit price.

1.1.2 References. The Contractor shall follow the latest versions of the listed references.

1.1.2.1 Department of the Army, Corps of Engineers, Engineer Manuals.

EM 385-1-1 Safety and Health Requirements Manual EM 1110-1-1082 Geophysical Exploration for Engineering and Environmental

Investigations EM 1110-1-1804 Geotechnical Investigations

EM 1110-1-1807 Drilling in Earth Embankment Dams and Levees EM-1110-2-1907 Soil Sampling 203-80 Rock Testing Handbook

1.1.2.2 American Society for Testing and Materials (ASTM).

C 117 Standard Test Method for Materials Finer Than 75-µm (No.

200) Sieve in Mineral Aggregates by Washing

C 127 Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate

C 136 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

C 295/C295M Standard Guide for Petrographic Examination of Aggregates for Concrete

C 469/C469M Standard Test Method for Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression

D 422 Standard Test Method for Particle-Size Analysis of Soils D 698 Standard Test Methods for Laboratory Compaction

Characteristics of Soil Using Standard Effort

D 1140 Standard Test Methods for Amount of Material in Soils Finer Than the No. 200 (75-m) Sieve

D 1452D/ 1452M Standard Practice for Soil Exploration and Sampling by Auger Borings

D 1557 Test Method for Laboratory Compaction Characteristics of Soil Using Modified Effort

D 1586 Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils

D 1587 Standard Practice for Thin-Walled Tube Sampling of Soils for Geotechnical Purposes

D 1883 Standard Test Method for CBR (California Bearing Ratio) of Laboratory-Compacted Soils

D 2113 Standard Practice for Rock Core Drilling and Sampling of

Rock for Site Investigation D 2166 Standard Test Method for Unconfined Compressive Strength of Cohesive Soil D 2216 Test Method for Laboratory Determination of Water

(Moisture) Content of Soil and Rock by Mass D 2435/D 2435M Standard Test Method for One-Dimensional Consolidation

Properties of Soils Using Incremental Loading D 2487 Standard Practice for Classification of Soils for Engineering

Purposes (Unified Soil Classification System) D 2488 Standard Practice for Description and Identification of Soils

(Visual-Manual Procedures) D 2573 Standard Test Method for Field Vane Shear Test in Cohesive

Soil D 2850 Standard Test Method for Unconsolidated-Undrained Triaxial

Compression Test on Cohesive Soils D 2936 Standard Test Method for Direct Tensile Strength of Intact

Rock Core Specimens D 3080/D 3080M Standard Test Method for Direct Shear Test of Soils under

Consolidated Drained Conditions D 3441 Standard Test Method for Mechanical Cone Penetration Tests of Soil D 3740 Standard Practice for Minimum Requirements for Agencies

Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

D 4220 Standard Practices for Preserving and Transporting Soil Samples

D 4253 Standard Test Methods for Maximum Index Density and Unit Weight of Soils Using a Vibratory Table

D 4254 Standard Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density

D 4318 Standard Test Methods for Liquid Limit, Plastic Limit and Plasticity Index of Soils

D 4719 Standard Test Methods for Prebored Pressuremeter Testing in Soils

D 4767 Standard Test Method for Consolidated Undrained Triaxial Compression Test for Cohesive Soils

D 5079 Standard Practices for Preserving and Transporting Rock Core Samples

D5434 Standard Guide for Field Logging of Subsurface Explorations of Soil and Rock

D 5753 Standard Guide for Planning and Conducting Borehole Geophysical Logging

D 5778 Standard Test Method for Electronic Friction Cone and Piezocone Penetration Testing of Soils

D 6032 Standard Test Method for Determining Rock Quality Designation (RQD) of Rock Core

D 6151/D 6151M Using Hollow-Stem Augers for Geotechnical Exploration and Soil Sampling

D 6167 Standard Guide for Conducting Borehole Geophysical Logging: Mechanical Caliper

D 6274 Standard Guide for Planning and Conducting Borehole Geophysical Logging – Gamma

D 6282 Standard Guide for Direct Push Soil Sampling for Environmental Site Characterizations

D 6635 Standard Test Method for Performing the Flat Plate Dilatometer

D 6914 Standard Practice for Sonic Drilling for Site Characterization and the Installation of Subsurface Monitoring Devices

D 7012 Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures

D 7181 Standard Test Method for Consolidated Drained Triaxial Compression Test for Soils

E 145 Standard Specification for Gravity-Convection and Forced- Ventilation Ovens

E 329 Standard Specification for Agencies Engaged in Construction Inspection, Testing, or Special Inspection

1.1.2.3 U.S. Department of Labor, Occupational Safety and Health Administration (OSHA).

29 CFR 1926.652 Requirements for Protective Systems.

1.1.2.3 Any reference not listed below shall be included in the task order request for proposal for each specific tasking.

1.1.3 Task Orders. Each proposed task order will be discussed by the Contractor and the Contracting

Officer as necessary to develop a mutual understanding of the type of drilling desired, sampling methods and intervals required. A task order for each assignment will be issued in writing by the Contracting Officer on DD Form 1155 and will include the project location, funding citation, type and number of borings required, sampling required, starting and estimated completion date. A minimum of 3 working days lead time will be given on each task order. Extension may be granted under special conditions by the Contracting Officer. Work shall be started within 10 working days after issuance of a task order, unless otherwise indicated within the task order.

1.1.4 Subcontracting. The Contractor may at his option and with approval of the Contracting Officer, sub-contract all or any part of the drilling, or other functions described by this contract. It will be the responsibility of the Contractor to see that all applicable parts of the specifications are met for all work done by a sub-contractor, including the qualifications of personnel, delivery of samples, validation of subcontract laboratory test procedures, and on-schedule completion of work. Overhead may be paid for processing through the subcontractor’s invoices, as negotiated by task order.

1.1.5 Location. The focus of the work will be geotechnical investigation at various sites within the boundaries of the St. Louis District, in the States of Missouri and Illinois. In addition to work within the boundaries of the St. Louis District, work may be required at locations within the Mississippi Valley Division, as well as CONUS (continental U.S.) locations, as directed by the individual task order. The Contractor may be required to perform drilling and sampling of hazardous waste sites requiring up through Level C personal-protection per United States Environmental Protection Agency guidelines. These guidelines are available for inspection at the U.S. Army Engineer District, 1222 Spruce Street, St. Louis, Missouri 63103-2833, Geotechnical and HTRW Branch, Room

4.306. In addition, the Contractor can refer to 20 CFR 1910.120 App B. The Contractor should be aware that any labor relations or union matters related to work performed under this contract are the Contractor’s responsibility and will not be allowed to interfere with the work.

1.1.6 Drilling Mobilization and Demobilization, Land and Overwater.

Mobilization shall consist of the preparation and delivery to the work site of all resources necessary to complete the work outlined in the task order to include labor and travel time. For Land-based mobilization, these resources shall include but are not limited to; plant, equipment, materials, and supplies to be furnished by the Contractor. The contractor shall ensure the satisfactory working order of all such plant and equipment on the job, and the satisfactory storage at the site of all such materials and supplies.

Overwater mobilization shall consist of the delivery to the work site of all resources, to include but not limited to; drilling barges, jack up boat or barge, cranes, boats, plant, equipment, materials, and supplies required to perform overwater drilling and sampling. Demobilization shall consist of the removal from the site of all resources, to include but not limited to, plant, equipment, unused supplies, and drilling wastes both solid and liquid remaining after completion of the work and the return of the land to a condition as near to its original state as possible.

Demobilization shall consist of the removal of all contractor resources and waste from the work site to include labor and travel time.

1.1.7 Right-of-Entry. The right-of-entry needed for this work will be furnished by the Government. In the event the Contractor desires right-of-entry not provided by the Government for ingress/egress across private property or for other purposes, it shall be the sole responsibility of the Contractor to obtain such right-of-entry and the Government shall be held free of any cost, expense, or liability of any kind in connection therewith. Any relocation of borings shall require prior approval by the Contracting Officer.

1.1.7.1 Utilities and Traffic Control. Locating and marking utility locations that may interfere with or prevent drilling or drilling access shall be the responsibility of the Contractor. The Contractor shall coordinate with the appropriate utilities and receive clearance prior to any drilling. Traffic control may be required by local entities and is the responsibility of the Contractor. Traffic control, utility shielding, utility de-energizing or other relate measures shall be negotiated per individual task order as the cost will vary with each task order. Any relocation of borings shall require prior approval by the Contracting Officer. Permitting requirements not associated with utilities and traffic control shall be negotiated per individual task order.

1.1.7.2 Railroad Encroachment. The location of some borings may be in close proximity to railroads requiring flagmen and indemnity insurance. It is the contractor’s responsibility to identify the railroad encroachment. Payment for additional items such as permits, and insurance shall be negotiated per individual task order as the cost will vary with each task order.

1.1.8 Order of Work. The order in which the work is to be accomplished shall be as directed by the task order or as determined in the field by the Government.

1.1.9 Reports. Reports shall include but are not limited to, ENG Form 1836 "Drilling Log", WES Form 797 "Relief Well Installation Report", WES Form 796 "Relief Well Pumping Test Report", WES Form 798, “Piezometer Installation Report”, and ENG Form 2087 "Gradation Curves" for filter pack samples. When required by task order, the Contractor shall ensure the completion of a detailed log, using ENG Form 1836, for each hole. All original reports shall be prepared in the field.

1.1.10. Photography. If required by the task order, color digital photographs shall be taken of each retrieved sample after opening, but before removal from the sampling device. Each photograph shall contain an engineering rule for scale, an 18% gray card, and a clearly legible identification label. Samples shall be fresh, with any surface drilling mud removed. Photographs shall be well composed, focused on the sample, and with the sample filling the entire picture. Photographs shall be well lit and avoid shadows. The Identification label shall include project name, boring designation, sample number, depth of sample, date and time.

Photographs of retrieved samples shall be taken of each retrieved sample. Full compensation for all necessary equipment, accessories, supplies, and labor, to photograph the retrieved sample in compliance with these requirements. Photographs of tests pits shall be of each exposed face of the test pit submitted. Cardinal orientation of the exposed face shall be included. Photographs of rock cores shall include two digital color photographs shall be submitted for each box containing rock core. One photograph shall be of the entire core box clearly showing the labeling on the inside cover of the box, while the second photograph shall be a close-up of a representative section of core for a more detailed view of the rock character.

These photographs shall be taken using digital camera(s) set at 14 megapixels or greater resolution. The Contractor should bid the work understanding that excellent photographic quality is required whenever photographs are specified, and that the Contracting Officer will require, at the Contractor’s expense, either retakes of poor quality photographs, or a repeat of the work if required to ensure high quality photographic documentation. Appropriately named photographs shall be provided to the Contracting Officer electronically. Instructions on naming and attributing are located within this document or within each task order. Information on uploading, if required, will be provided in each task order. All drilling activity photographs (hole locations, stakes, core runs, core boxes, etc.) for a particular task order shall be provided electronically, unless otherwise specified under a task order.

1.11 Cleanup of Work Sites. During the progress of the work, the Contractor shall clean the work area daily to prevent the accumulation of trash and debris. Additionally, the Contractor shall, upon completing exploration operations, clean up all scrap, waste material, waste drilling mud, oil or other waste generated during the work;

backfill of all excavations, removal of all cribbing or drilling pads, resulting from operations; and as much as reasonably possible, return the drill sites, access roads, and the overall site to its original condition by grading, dressing and providing replacement soil and vegetation for all disturbed areas; and check that all hole location stakes are in places. All costs associated with this work shall be included in the unit price for the appropriate items, and no separate payment will be made.

1.12 Sustainable Products Under the Comprehensive Procurement Guidelines (CPG) program, the Environmental Protection Agency (EPA) designates products that are or can be made with recovered materials and recommends practices for buying these products. Any designated product that is being offered or supplied under this contract shall meet the minimum recommended content levels as identified under the CPG program, as applicable.

Visit http://www.epa.gov/epawaste/conserve/tools/cpg/products for a complete list of designated products and the associated recommended content levels. Offerors must be able to demonstrate that each offered product meets minimum content levels upon request.

1.12.1. Safer Choice. The contractor shall provide Safer Choice labeled products under this contract, as applicable. The contractor is encouraged to visit http://www2.epa.gov/saferchoice/products for updated lists of qualifying products.

1.12.2. Bio-based. The United States Department of Agriculture (USDA) designates certain biobased products for federal procurement and specifies minimum biobased content levels for those products. Any designated product that is being offered or supplied under this contract shall meet USDA BioPreferred’s minimum biobased content level, as applicable. Visit the BioPreferred web site for the complete list of designated products and the associated minimum biobased content level requirements.

1.2 Personnel

1.2.1 Drilling Crew. The drill crew shall consist, at a minimum of two crew members, not including the Logger, any other crew members necessary to adequately and efficiently operate the drilling, sampling and other testing equipment. All personnel directly involved with hazardous waste drilling, sampling, testing and/or other services shall follow the training and medical surveillance requirements set forth in Title 29, Part 1910, Section 120 of the Code of Federal Regulations. Resumes of new hired supervisory driller, geologist or log reviewer (if applicable) performing work under this contract shall be submitted to the Government for approval at least 14 calendar days before commencement of any task order that new hired individuals shall work on. When a Registered or Professional Geologist is not available for field logging, all logs shall be reviewed by either a Registered or Professional Geologist or Professional Engineer.

1.2.2 Supervisory Driller. The supervisory driller shall have a minimum of five years’ experience in drilling, sampling, testing, and be trained in the preparation, monitoring and use of drilling fluids in mud rotary drilling methods for use in engineering and/or hazardous and toxic waste investigations. The supervisory driller shall be present during all drilling, sampling and field-testing activities performed under this contract. The supervisory driller shall be qualified under applicable State and local regulations to perform the work as specified.

1.2.3 Geologist. When required in a task order, the Contractor shall furnish a professional, licensed or registered geologist to perform the field logging and record keeping. Any work produced by non -licensed or -registered geologists shall be reviewed by a licensed or registered geologist prior to submission of records to USACE. Field logging shall be in accordance with section 1.5, below. The geologist shall be present during all drilling, sampling, subsurface instrumentation, well and piezometer installation, and in situ testing, unless otherwise specified in the task order from the Contracting Officer. The geologist shall be experienced in the preparation of geotechnical drill logs and the field classification of soils by the Unified Soil Classification System (USCS) in accordance with ASTM D 2488.

1.3 Exploration Equipment and Supplies. All equipment proposed by the Contractor shall be available for inspection by a representative of the Contracting Officer prior to or after award of the contract. All equipment shall be in first class condition. Contractor's equipment proposed for use in this contract judged by the Contracting Officer to be unsuitable will be a basis for rejection of the Contractors bid. The Contracting Officer has the right to prohibit the use of any piece of equipment due to its condition, incompatibility with other equipment or scope incompatibility, or is not conducive to safely obtaining high quality samples. Equipment that is rented for a task order shall be submitted for Government approval and shall comply with EM 385-1-1.

1.3.1 Sampling Equipment -. Equipment to be furnished by the Contractor for sampling shall include, but not be limited to:

Split-spoon drive samplers (1 3/8-inch i.d., 2-inch o.d. and 2 ½-inch i.d., 3-inch o.d.)

Continuous sampling hollow stem system similar or equal to the Central Mine Equipment or

Mobile hollow stem continuous samplers, Barrel-type augers, such as the Vicksburg or McCart Auger, hollow stem augers or types approved by the Contracting Officer Tricone (roller) bits up to 12 inches in diameter, Casing Advancement System Fixed piston samplers NQ, NX, HQ, PQ, 4”x5.5” double-tube core barrel with appropriate diamond bits, drill rods, reaming shells and casing.

1.3.2 Drilling Equipment. Machinery shall be of the "hydraulic feed" type direct rotary drill, and shall be equipped with an automatic hammer, and possess hydraulic leveling devices on the truck, ATV, or cargo carrier. An ATV or cargo carrier may be required on some drill sites. All drilling rigs and pumps shall be equipped with drill head feed pressure and water pressure gages. The Contractor may be required to perform work where a rotary rig of reverse circulation type. Other drilling equipment shall include but not be limited to portable cuttings pit, casing, piping, pumps, drill rods, bits, tools, and power necessary to accomplish the required drilling. All gages shall be calibrated every three months, or after repairs to gages.

1.3.2.1 Automatic Hammer. The automatic hammer shall be used for all Standard Penetration Tests (SPT), in accordance with ASTM D 1586, and shall be capable of lifting a 140-pound drive weight and completely releasing the weight for a 30-inch freefall to provide a driving rate of from 5 to 40 blows per minute. Approval of the automatic hammer will require submittal of test results from an experienced firm showing the dynamic energy analysis. Any automatic hammer used in performance of this work shall be analyzed for energy delivered to the drive rods on an annual frequency or after repairs to the automatic hammer, or as directed by the Contracting Officer. Calibration documentation shall be available upon request.

1.3.3 Overwater Drilling Equipment. In addition to the above, the Contractor shall, when directed by task order, supply the necessary plant, equipment and personnel to support the drilling and sampling of overwater borings, including helper boat(s), work barges, jack-up barge or boat, cranes and operators. The floating plant shall possess its own source of mobility power be it internal or a separate boat capable of moving the plant and shall have adequate spud anchors to allow a steady, fixed position during drilling. Overwater drilling may continue up to a maximum water level equal to flood stage on the local river gage. A push boat of sufficient power to handle the loaded drilling barge, in exposed, open-water conditions, shall accompany the barge at all times. All floating plant shall conform to U.S. Coast Guard requirements and EM 385-1-1 to ensure safe operation.

When required by navigation or other river conditions, and as directed by the Government, the Contractor shall provide additional helper boat(s) to prevent or minimize impediments to navigation caused by the overwater drilling operation.

1.3.4 Shallow Water Drilling Equipment. Shallow water areas may require the use of shallow draft jack up boat or barge, or a swamp/marsh buggy mounted drilling and support equipment. Shallow water drilling may be required per the task order for areas that hold shallow water for an extended period of time, are not accessible by land-based drilling equipment, and are not navigable or accessible via floating plant.

1.3.5 Excavation Equipment. The Contractor shall, when directed by task order, supply the necessary plant, equipment and personnel to support the sampling of soil by test pits/trenches. All excavation work shall be performed in accordance with all State and local regulations and the applicable standards and guidelines set forth in Section 1.1.2. The test pit/trench equipment shall be capable of opening a cross-sectional area large enough to permit efficient excavation and shoring/lining or laying-back of the slope, engineering and geological inspection and photographing of the subsurface soils, and manual undisturbed sampling from within the test pit/trench. Trenches or test pits are typically in the range of 10-15 feet in depth. Samples shall be collected, as directed by task order, either in jars or as bulk samples weighing of 80 to 100 pounds total sample weight collected. Jars or bulk samples shall be labeled as to project, trench number and depths from which they were obtained. Jar samples shall also be taken from each bulk sample. Government representatives may observe and photograph the test trenches or pits. A detailed log of the trench/pit shall be completed in accordance with Appendix B of EM 1110-1-1804, complete with soil descriptions, depths and any other pertinent information. The Contractor shall assume that no dewatering will be necessary.

Samples shall be identified and described in the field in accordance with ASTM D 2488. The test pit/trench excavation shall be backfilled following completion of the investigation. Backfill procedures will be specified in the individual task order, however at a minimum the Contractor shall restore the excavated soil profile to its original condition/topography.

1.3.6 Drilling and Sampling Supplies. Drilling supplies to be required under this contract shall include but not be limited to all water, drilling mud, bentonite, Portland cement, biodegradable fluid additives, and all other additives (barite, salts, etc.) necessary to accomplish the required drilling, sampling, and backfilling. Sampling supplies shall include but not be limited to wood core boxes, corrugated plastic core boxes, thin walled tubes with slip on caps (5-inch diameter by 36-inch long tubes and 3-inch diameter by 30-inch long tubes), sample jars, lids and boxes for transportation of jars. Sample jars shall be 1-pint capacity, wide-mouth (over 3-inch diameter and straight-sided), glass or plastic jars with rubber-ringed lids or lids with a coated paper seal. Other supplies shall include 5-gallon plastic buckets with air-tight, sealable lids, bags, wax, duct tape, plastic cylinder molds with caps, and core preservation materials, including but not limited to Parafilm M, aluminum foil, and 3-mil plastic tubing.

1.4 Drilling and Sampling Procedures

1.4.1 General. Drilling and sampling procedures shall be performed in accordance with all State and local regulations and the applicable standards and guidelines presented in Section 1.1.2

1.4.2 Boring Locations. The location of each completed boring shall be field recorded by the Contractor using a Global Positioning System (GPS) hand held unit, possessing Wide Area Augmentation System (WAAS) capability, to accurately measure to within 10 meters in the horizontal, in the appropriate datum, coordinates shall be given as Latitude and Longitude in decimal degrees or as described by task order. In addition, the completed boring shall be staked and flagged in such a manner to permit surveyors to quickly record its location. A detailed sketch shall be included on the drilling log showing the location of the boring relative to stationary objects with measurements to the nearest 1.0 ft.

1.4.3 Drilling Methods. The appropriate drilling methods shall be based on the geotechnical conditions present, the compatibility with the required sampling, and the requirements of the individual task order.

1.4.3.1 Soil Drilling Methods. In general, for soil, dry drilling methods for advancing the hole shall be used above the water table or saturated zone.

1.4.3.1.1 Non-HRTW Soil Drilling Methods. These include but are not limited to hollow stem auger drilling with center plug, barrel auger drilling, or other approved techniques for producing representative samples during hole advancement. Mud rotary drilling methods shall be used below the water table or in the saturated zone.

It is the Contractor’s responsibility to assure that the drilling mud is appropriate for the intended purpose of the boring and retains an open, clean hole during the drilling and sampling. The use of bottom discharging bits is prohibited.

1.4.3.1.2 Hazardous Waste Soil Drilling Methods. In general, for soil drilling in contaminated areas, dry drilling methods for advancing the hole shall be used above the water table or saturated zone. These include but are not limited to hollow stem auger drilling with center plug, barrel auger drilling, or other approved techniques for producing representative samples during hole advancement. Mud rotary drilling methods shall be used below the water table or in the saturated zone. It is the Contractor’s responsibility to assure that the drilling mud is appropriate for the intended purpose of the boring and retains an open, clean hole during the drilling and sampling. The materials resulting from drilling through HTRW soils shall be containerized in 55-gallon drums, including the cuttings, sediment from the mud pit, drilling mud and disposable Personal Protective Equipment (PPE) used by personnel. The drums shall be sealed and hauled to an appropriate disposal facility and disposed of, off site. The Contractor shall be in compliance with all applicable local, State and Federal laws concerning the drilling, sampling, hauling and disposal of Level ‘C’ HTRW wastes and PPE.

1.4.3.2 Sonic Drilling. If required in a task order, the Contractor shall perform sonic drilling. A basic description of sonic drilling and sampling is described in ASTM D 6914. The system shall be a high frequency vibration aided by down pressure and rotation drilling apparatus, capable of penetrating multiple formations of varying hardness and thickness with a high percentage of continuous core recovery. The standard apparatus shall utilize a 10-foot long by 4-inch by 6-inch diameter core barrel, with steel cutting bit, and accessory equipment. The system shall also have the ability to core in 10-foot lengths with diameters of 6-inch by 8- inch, 8-inch by 10-inch, or 10-inch by 12-inch, and utilize an acrylic sampling sleeve in a 5- foot (10-foot not permitted) long by 4-inch core barrel. If negotiated for the task order, the system shall have the ability to perform traditional sampling, such as:

SPT, rock coring, and undisturbed sampling in concert with sonic drilling.

The sonic drilling process recovers highly disturbed samples and can pulverize soft rock. For this reason, care shall be taken to properly characterize the recovered materials. For logging of standard sampling, the bags shall be cut open lengthwise not to obscure identifying markings on the bag. After logging, representative jar samples shall be collected at a minimum of every 5 feet or change in material type.

For logging of acrylic tubes, the tubes shall be cut lengthwise on opposite sides, with care being taken not to obscure identifying markings on the tube. The sample inside shall be split in half with a spatula or knife along the cut. The liner can then be opened revealing two halves of the sample. One half of the sample shall be used for logging and removal of representative samples for laboratory testing, while the other half shall be left undisturbed.

Samples from sonic drilling shall be labeled at the time of collection directly on the tube/bag using Eng Form 1742. After logging of the materials, the tube shall be tightly wrapped with 4 mil plastic sleeving and carefully cut into 4.9 foot sections that will fit into a 4” x 5 1/2” core box. The 4.9 foot sections shall be thoroughly sealed at both ends to minimize sample disturbance and moisture loss and shall then be placed into core boxes. The plastic sleeving shall be labeled with the boring ID and depths of both the top and bottom of the sample.

1.4.3.3 Rock Drilling Methods. In borings where the depth to rock is to be judged without rock coring, top of rock shall be probed with a tricone roller bit a minimum of 5 feet or as directed by Task Order. The geologist shall judge the bedrock type, depth and condition based on drill action and cuttings and record the description on the drilling log.

1.4.3.4 Diamond Core Drilling. Rock core drilling shall conform to the requirements of ASTM D2113.

Rock core drilling shall include but not be limited to NQ, NX, HQ, PQ, 4”x5.5” or as directed by the task order.

Rock core drilling shall be an approved, standard and accepted method of double-tube rotary rock core drilling using diamond coring bits which obtain continuous and complete rock cores of standard diameter for the respective bit size.

1.4.4 Sampling Procedures. Samples shall be obtained by one or more of methods herein, and as described in the Task Order. Soil samples shall be identified and described in the field in accordance with ASTM D 2488, “Standard Practice for Description and Identification of Soils (Visual-Manual Procedure). Rock core samples shall be identified and described in the field in accordance with EM 1110-1-1804 - Geotechnical Investigations. All soil samples (jars, tubes, buckets, etc.) shall be labeled with the Government provided Eng. Form 1742 in accordance with EM 1110-2-1907. All labels shall be completed in full.

1.4.4.1 Standard Penetration Test Method – SPT (ASTM D 1586). The soil shall be sampled in accordance with ASTM D1586 by standard (SPT) 2-inch o.d. split-spoon sampler at an interval not greater than five feet, or as directed by Task Order. When a change of material is detected during the process of drilling, the drilling shall be stopped, the depth determined, and a sample taken immediately. The sampler shall be driven by an approved automatic hammer as described in Section 1.3.2.1. The number of blows required for each 6 inches of penetration shall be recorded on the drilling log. Refusal is defined as penetration of 1 inch or less for 50 blows. Where samples are not obtained, a second attempt using a 3-inch split-spoon may be required. SPT samples shall be placed in jars and labeled with Eng. Form 1742. Soils in the same SPT sample with different classifications shall be placed in separate jars and labeled according to section 1.5 below.

1.4.4.2 Continuous Hollow Stem Auger Sampler (ASTM D6151). When required, continuous overburden samples shall be taken with a 3-inch split barrel hollow stem continuous sampler. Samples shall be removed from the barrel, logged, and wrapped in Parafilm-M or equal laboratory film, then placed in 3 mil clear polyethylene ‘poly’ tubing (large enough to loosely fit over wrapped sample). The poly tubing ends shall be doubled over and taped around the sample to prevent moisture loss. The sample shall be placed in 4-inch diameter waterproof containers for additional protection.

1.4.4.3 Undisturbed Sampling (ASTM D 1587). Undisturbed sampling shall be performed using either 5-inch diameter by 36-inch long, or 3-inch diameter by 30-inch long cylindrical sample tubes as directed by Task Order. The task order may require the use of a fixed-piston type sampler. The sampling apparatus shall be of a design similar to the Hvorstev-type or Osterberg type fixed-piston sampler. Other fixed-piston sampler designs may only be used with Government approval. The Government may provide an Osterberg type 5-inch fixed-piston sampler for the contractor’s use. All sample tubes shall be smooth, round and free of dents. The tubing shall be of either seamless or welded construction. Any welds or seams shall be constructed such that the projection from the inside surface shall not exceed the thickness of the tubing. The cutting edge of the tubes shall be sharp and free of nicks. The tubes shall be new, clean, free of rust, and lightly oiled.

Samples shall be typically capped in their sample tubes or, if required by Task Order, extruded in the field.

If capped in the sample tubes, the ends shall be cleaned of any disturbed material, a representative jar sample taken from the bottom end, and the ends sealed with a commercially available paraffin wax to be approved by the Government. Samples to be extruded in the field shall be carefully extruded, cut into approximate 10-inch lengths, wrapped in Parafilm-M or equal laboratory film, then placed in 3 mil clear poly tubing (large enough to loosely fit over wrapped sample). The poly tubing ends shall be folded over, and duct taped around the sample. Samples shall be placed in a 6-inch diameter plastic cylinder molds for transportation.

Cylinders and sealed sample tubes shall be labeled using Eng. Form 1742. When two or more samples are obtained from a push, they shall be labeled using the sample number followed by A, B, C, etc.

Samples shall be taken at intervals specified by Task Order. Refusal will be considered reached when the sampler will not penetrate the soil sufficiently for a recovery with a pushing pressure of 600 psi or greater. If refusal is encountered, the contractor may be required to attempt a “driven sample” using the auto-hammer and anvil. All “driven samples” shall be clearly labeled “driven sample”.

1.4.4.4 Sonic Drilling Sampling. Sampling shall be continuous. When performing standard sampling procedures, the contents of the core barrel shall be extracted and placed in a poly tubing bag. When an acrylic tube is used, the sample shall be removed from the core barrel and fitted with plastic end caps. For either poly tubing bag samples or acrylic tubes, seal with waterproof tape and label using Eng Form 1742.

1.4.4.5 Bulk Samples. Bulk samples may be obtained using standard barrel augers, flight augers, or other approved method to meet Task Order requirements. Samples shall be taken at intervals specified and shall total between 80 and 100 pounds each. Sample material shall be placed in commercial quality, 5-gallon buckets and sealed with air-tight lids. Each bucket shall be labeled as to project, boring number and depths from which it was obtained using Eng. Form 1742. Representative jar samples shall also be taken from each bucket for classification testing and labeled using Eng Form 1742.

1.4.4.6 Core Samples. (ASTM D 5079). Rock core samples shall be handled as specified in ASTM D 5079.

Core may be broken to fit in core boxes provided such breaks are properly labeled in the box and on the log to identify their origin. All core samples shall be retained. Wooden spacers shall be used to separate individual coring runs and any voids encountered, regardless of the type of core box. For preservation, the core shall be kept moist from the time it is removed from the sampler. The core shall be wrapped in Parafilm-M or approved equal laboratory film and placed in 3 mil clear poly tubing (large enough to loosely fit over wrapped core). The poly tubing ends shall be doubled over and taped around the core to prevent moisture loss.

1.4.5 Backfilling Borings. Backfilling of borings shall be performed in accordance with all applicable State and local requirements. As a minimum, boreholes shall be tremie grouted from the bottom up, with a neat cement grout immediately upon completion, unless noted otherwise in the Task Order. The grout shall consist of a mixture of type 1 Portland cement, powder bentonite, and water in the proportion of no more than 6 gallons of water per 94-pound bag of cement. The bentonite powder proportion shall be 3-5% (by dry weights) of the cement proportion and shall be hydrated prior to mixing with the cement. Borings shall be tremie backfilled by inserting a grout pipe to the bottom of the hole and pumping the grout mixture until clean grout flows out the top of the hole. The grout pipe shall be withdrawn during the grouting, but the end of the grout pipe shall always remain embedded at least 2-feet below the surface of the grout. Borings left open overnight shall be covered to prevent injury to personnel and to minimize the potential for any surface drainage entering the boring. Pavement shall be backfilled with tamped asphalt. Any backfilled holes that show evidence of grout shrinkage or settlement shall be re-grouted within 24 hours to bring the top of grout back to the ground surface.

1.4.5.1 Backfilling Overwater Borings. Backfilling of overwater borings shall be performed immediately upon completion of the boring. The grout mix shall be the same as noted above in section 1.4.5. The volume of soil and rock removed by the drilling action shall be calculated by the contractor. An equal or greater volume of grout shall be placed by the tremie method from the bottom of the boring as described in section 1.4.5 above. Grout placement shall occur prior to the removal of the casing material (hollow-stem augers, pipe, drill steel casing, or other).

1.5 Records. Boring logs shall be prepared on Eng. Form 1836 per the following guidelines unless otherwise noted in the task order.

1.5.1 General Instructions for ENG 1836. The Contractor shall keep accurate driller's logs and records of all work accomplished under this contract. All such records shall be preserved in good condition and order by the Contractor until they are delivered and accepted, and the Contracting Officer and/or COR shall have the right to examine such records at any time prior to their delivery. Separate logs shall be made for each hole. All drill logs shall subscribe to the following requirements:

a. Logs are to be prepared on ENG Form 1836. A black pen should be used.

b. Logs should be as neat and legible as possible, but do not RECOPY logs which become soiled, as only the original is an acceptable legal record. Errors should be lined out, rather than erased.

c. Logs shall be at a scale of 1 inch = 1 foot.

d. Holes should be logged in detail. The logs shall contain all information obtainable from visual examination of the samples or core, and the log should explain all exploration and sampling procedures and methodology. Any deviations shall also be noted.

e. Avoid non-standard abbreviations in the descriptive column of the log.

f. Each feature logged shall be described in such a way that other persons would recognize the feature, the depth(s) at which it occurs, it’s thickness or size, it’s shape or appearance, and hardness and plasticity, where appropriate.

g. Horizontal solid lines shall be used in the description column to indicate stratigraphic contacts or changes in materials. Horizontal lines in the remarks may be used to delineate the portion of the boring to which specific remarks apply, e.g., exploration method, changes in fluid color, etc.

h. Every attempt shall be made to obtain samples or core representative of all materials encountered in the boring. Where samples cannot be obtained for the zone in question, the geologist and the driller will use their experience and judgment to establish the type of material.

i. The entire length of hole will be described by reference to actual samples or by experienced evaluation.

j. The depth at which the material is saturated shall be determined whenever possible and the static ground water depth measured and recorded.

k. Each portion of the ENG 1836 header shall be completed as appropriate on each page of the log, including the signature of the inspector.

l. A simple sketch showing the location of the boring shall be drawn in the remark’s column at the top of page 1. This diagram should utilize measured distances from known items, e.g., fence line, gravity drain, relief well, etc. See plates 1 and 2 following, for examples of logs.

1.5.2 Specific Instructions for ENG 1836. Unless otherwise specified under the task order, the following components of ENG Form 1836 shall be completed as follows:

a. The following header components of ENG 1836 should be completed as follows:

1) Hole No. (top of the page): As assigned.

2) Division: (MVD) Mississippi Valley Division

3) Installation: St. Louis District.

4) Sheet ___ of___ sheets (self-explanatory)

5) Block 1. PROJECT: Provide the specific name of the project

6) Block 2. LOCATION: If exact stationing and offset are known, enter here. If exact coordinates are available, enter here. If either stationing or coordinates are not known, enter ‘See Remarks’ and draw a sketch of the location in the remarks column on page 1. It is also useful to make locations on field maps if available. Any changes in locati0n from original plan should also be noted in the remark’s column, along with the reason for the change.

7) Block 3. EXPLORATION AGENCY: Enter the name of the District, Government agency or Contract exploration company, whichever is applicable.

8) Block 4. HOLE NO.: As assigned

9) Block 5. NAME OF DRILLER: If more than one, enter all names.

10) Block 6. DIRECTION OF HOLE: Check the appropriate box and provide compass degrees from vertical.

11) Block 7. THICKNESS OF OVERBURDEN: Enter the drilled footage of material above the top of rock, if known. If not known, leave blank.

12) Block 8. DEPTH DRILLED INTO ROCK: Enter the drilled footage of rock, from top of rock to bottom of hole.

13) Block 9. TOTAL DEPTH OF HOLE: Enter the drilled footage from ground surface or ‘0’, to bottom of hole.

14) Block 10. SIZE AND TYPE OF BIT: Show all bits used. If several bits of different type and size are used, enter ‘See Remarks’ and show size and type of bits used, in the remark’s column, at the appropriate depths.

15) Block 11: DATUM FOR ELEVATION: Typically, NGVD 88 (National Geodedic Vertical Datum.