W912ES21R0003 Amendment 1.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

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

FAR (48 CFR) 53.243

The purpose of Amendment 0001 is to make changes to the SOW and extend the solicitation close.

1. CONTRACT ID CODE PAGE OF PAGES

1 16

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

16C. DATE SIGNED

BY 04-May-2021

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

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

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912ES21R0003

X 9B. DATED (SEE ITEM 11)

14-Apr-2021

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

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

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

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

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

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

CONTRACT ORDER NO. IN ITEM 10A.

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

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

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

6. ISSUED BY

3. EFFECTIVE DATE

04-May-2021

CODE

CONTRACTING DIVISION

USACE - ST PAUL

180 FIFTH STREET EAST

SUITE 700

SAINT PAUL MN 55101-1678

W912ES 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912ES21R0003

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 1449 - CONTINUATION SHEET

SOLICITATION/CONTRACT FORM

The set aside percentage 100.00% has been added.

The required response date/time has changed from 05-May-2021 02:00 PM to 12-May-2021 02:00 PM.

The Acquisition Set Aside has changed from No Preference / Not Listed to Small Business.

The following have been modified:

STATEMENT OF WORK

US ARMY CORPS OF ENGINEERS

DRILL RIG RENTAL AND SUPPORT SERVICES CONTRACT

EASTERN AND WESTERN AREAS, ST. PAUL DISTRICT

PARTS OF NORTH AND SOUTH DAKOTA, AND PARTS OF MINNESOTA, WISCONSIN,

AND IOWA

DESCRIPTION/SPECIFICATIONS

TABLE OF CONTENTS

SECTION 1: GENERAL

SECTION 2: EQUIPMENT AND SUPPLIES

SECTON 3: CONE PENETRATION TESTING

SECTION 4: MOBILIZATION AND DEMOBILIZATION

SECTION 5: SITE SAFETY, UTILITY LOCATES, NOTIFICATIONS, ROAD USE

PERMITS, MONITORING WELL PERMITS, BORING AND WELL

ABANDONMENTS

SECTION 6: MILEAGE

SECTION 7: PROJECT LOCATIONS

SECTION 8: OPERATING PERSONNEL

SECTION 9: MAINTENANCE AND REPLACEMENT OF EQUIPMENT

SECTION 10: OPERATING AND WORKING TIME

SECTION 11: PER DIEM

SECTION 12: PIEZOMETER AND MONITORING WELL MATERIALS

SECTION 13: DELIVERY ORDERS

SECTION 1: GENERAL

A Government Inspector will be on-site to log borings and inspect the work.

1.1 Rental of Drilling Equipment with Operating Personnel and Supplies

Mileage for all vehicle use necessary to accomplish the work, and that is not covered by mobilization and demobilization, shall be included in payment for Rental of Drilling Equipment, there shall be no separate payment for mileage.

At the time of the contract award the Contractor shall have all the necessary licenses, registration, etc., for personnel and equipment, to begin work immediately in all the states in which the awarded contract applies. The Contractor shall furnish drilling equipment, support vehicle(s), floating plant, supplies, and operating personnel capable of efficiently performing the following:

a. 4 ½-inch through 8-inch flight auger borings;

b. Borings through cohesionless and cohesive soils with 3-inch through 8-inch diameter fishtail or tricone roller bits, and a split-spoon sampler using drilling mud in lieu of casing. Upward directed drilling fluid return type bits may be required in engineered embankments;

c. Borings using 4-inch through 10-inch diameter pipe casing;

d. Auger-through and split-spoon sampling of cohesionless and cohesive soils with 3 ¼-inch, 4 ¼-inch, 6 ¼-inch, and 8 ¼-inch I.D. hollow stem augers;

e. Standard Penetration Test (SPT) per ASTM D1586-18, with automatic drive hammer and cathead driven safety hammer. Split-spoon sampler shall conform to standard split-barrel dimensions as detailed in ASTM D1586-18;

f. Continuous soil sampling with the standard split-barrel and a 2-inch I.D x 2 ½-inch O.D.

x 3-foot long split-barrel sampler;

g. 3-inch and 5-inch thin wall undisturbed soil sampling;

h. 3-inch and 5-inch Hvorslev-type fixed piston undisturbed sampling;

i. Coring of bedrock and rebar reinforced concrete with NQ-3, HQ-3, HQ-Wireline, PQ-3 and 6-inch x 7 ¾-inch diameter core barrels or equivalent. The appropriate diamond and carbide coring bits shall include internal and bottom discharge type;

j. Abandonment and backfilling of boreholes and CPTu soundings, per appropriate state requirements, by gravity and/or pump and tremie system with cement-bentonite, high solids bentonite, bentonite chips, barite and/or neat cement grout;

k. Rotary borings through rock, reinforced concrete, and cohesionless and cohesive soils. A mud pump, mud pan or tank, mud mixing apparatus, water tank and pump for tank filling, appropriate hoses, and bentonite drilling mud shall be on-site for each project;

l. Well screen and riser installations, for the purpose of constructing observation wells, monitoring wells, and dewatering wells (up to 8-inch diameter), direct burial piezometers and/or standpipe piezometers (up to 2-inch diameter), installing inclinometer casing (3.5-inch diameter), instrument protective casings and covers, and other instrumentation.

Borings through cohesive and granular soils, concrete, and rock, to set instrument pipe and casing, to install protective casing, and to backfill instrument installations with selected materials, as requested by the Contracting Officer’s Representative;

m. All types of soil and rock borings in Level D personal protective gear as defined by

OSHA;

n. Decontamination of all equipment before the Contractor arrives at the drilling site, between the sample intervals, boreholes, or before the Contractor leaves the drilling site as is deemed necessary in the scope of work;

o. Remote drill-site access prior to drilling to include removal of brush and small trees with chainsaw or appropriate methods, snow removal, site leveling as necessary;

p. Worksite restoration to pre-drilling conditions to include, but not limited to, removing auger and drill cuttings and repair ground damage at borehole sites, as requested by the Contracting Officer’s Representative;

q. Drill the majority of holes to a depth of less than 150 feet using DRILL RIGS A-D listed below. However, the Contractor may be required to drill and sample up to 300 feet in depth using equipment identified as DRILL RIGS B and DRILL RIG C. DRILL RIG A shall be capable to drill and sample to depths of at least 200 feet. DRILL RIG E shall be capable to drill and sample to a depth of 50 feet;

SECTION 2: EQUIPMENT AND SUPPLIES

Equipment requirements will vary from job to job as requested in individual delivery orders and defined in each scope of work. A typical scope of work will define the project requirements and will request the rig that can access the most remote boring. The majority of projects involve continuous split-spoon sampling using hollow stem auger to advance and clean the hole between samples, and mud-rotary drilling for maintaining an open borehole below the water table. A support vehicle (pickup truck or cargo truck) shall be included in the rental of each Drill Rig or CPTu System, no separate payment will be made for a support vehicle. Some projects may require more than one drill rig and operating crew at the same time. Individual delivery orders will specify the project requirements. The five different drill rig types and CPTu system required for this contract (detailed in section 2a. through 2e.) are: DRILL RIG A (All-Terrain Vehicle, Track-Mounted); DRILL RIG B (All-Terrain Vehicle, Flotation-Tired, Four-Wheel-Drive);

DRILL RIG C, (Truck-Mounted, Two Wheel-Drive or Four Wheel-Drive); DRILL RIG D

(Winch-Operated, Skid Frame-Type Drill); DRILL RIG E (Portable (Hand-Carried) Pipe Driving Winch); CPTu SYSTEM (detailed in section 3) pushed by one of the above Drill Rigs.

The equipment will be used on all types of terrain including but not limited to woods, steep hills, bogs, frozen lakes and swamps, and site conditions, dry, wet, snowy, or muddy. It will be used in all weather conditions; snow, rain, ice, and sub-zero temperatures.

Drilling equipment may be used on Government-owned or Contractor provided floating plant(s) on rivers, harbors, and lakes. Contractor provided work barge(s) shall, at a minimum, have 2 working spuds capable of holding the barge in place at a water depth of 40-feet. Barge(s) will be of sufficient size to be appropriate for the loading conditions and allow safe and stable access around all sides of the drilling equipment. A boat (push boat) to position the work barge may be necessary. A Contractor provided boat shall be equivalent to a 200 horsepower, twin engine array with push pads (push knees) to facilitate work barge to push boat connection. Depending upon work location both barge and boat may need to be transported over the road. The Contractor shall provide a competent boat pilot with the boat. Appropriate water safety gear to include personal flotation device for each crew member shall be included.

The Contractor shall furnish all equipment and supplies necessary to perform the required drilling to include, but not limited to, the following:

a. DRILL RIG A: All-Terrain Vehicle (ATV), Track-Mounted Rig with rotary drill and accessory equipment, designed for geotechnical drilling, rock coring, hollow stem auger advancement, and split-spoon sampling, with automatic driven hammer AND cathead driven safety hammer, for conducting a SPT per ASTM D1586-18. Drill rig must be designed for accessing remote sites, traveling over uneven terrain, over snow, and on very soft and/or wet ground. It should have a ground pressure of 4 psi or less with proper weight distribution and stability. Two hydraulic leveling jacks shall be fitted at the rear of the vehicle and at least one on the front. The drill mast shall be operated hydraulically and shall be fitted with sheaves for at least three (3) cables and one (1) rope. The drill rig shall be transported on a trailer between sites. The drill rig shall also be equipped with an attached or attachable water tank of at least 100 gallons that can be brought into remote mud-rotary drill sites that trailered water tanks or support vehicles with water tanks cannot access. The drill rig shall also be equipped with a pump capable of pumping bentonite drilling fluid required to keep the borehole open and remove cuttings, as well as cementitious grout mixes to abandon the borings or wells.

b. DRILL RIG B: All-Terrain Vehicle (ATV), Flotation-Tired, Four-Wheel-Drive Rig with rotary drill and accessory equipment; designed for geotechnical drilling, rock coring, hollow stem advancement, and split-spoon sampling, with automatic driven hammer AND cathead driven safety hammer for conducting a SPT per ASTM D1586-18. Drill rig must be designed for accessing remote sites, traveling over uneven terrain, over snow, and on soft and/or wet ground. It should have a ground pressure of 7.5 psi or less with weight evenly distributed. Two hydraulic leveling jacks shall be fitted at the rear of the vehicle and at least one on the front. The drill mast shall be operated hydraulically and shall be fitted with sheaves for at least three (3) cables and one (1) rope. Power winches of not less than 12-ton capacity and with not less than 150 feet of 3/4-inch diameter steel cable shall be mounted on the front of the vehicle. The drill rig must have the rotary capability of operating at a forward speed from 0 to 650 rpm. The rotary drive shall have a reverse gear and a maximum drill spindle torque of not less than 7,000 ft/lbs. The vertical drive shall have a stroke of at least 72 inches, downward thrust of not less than 16,000 lbs, and retraction of at least 24,000 lbs. Weight of the drill rig and tooling shall not exceed 24,000 lbs, and length of rig from bumper to bumper shall not exceed 24 feet.

The drill rig shall also be equipped with an attached or attachable water tank of at least 100 gallons that can be brought into remote mud-rotary drill sites that trailered water tanks or support vehicles with water tanks cannot access. The drill rig shall also be equipped with a pump capable of pumping bentonite drilling fluid required to keep the borehole open and remove cuttings, as well as cementitious grout mixes to abandon the borings or wells.

c. DRILL RIG C: Truck-Mounted, Two-Wheel-Drive or Four-Wheel-Drive Rig with rotary drill and accessory equipment; designed for geotechnical drilling, rock coring, hollow stem advancement, and split-spoon sampling, with automatic driven hammer AND cathead driven safety hammer for conducting a SPT per ASTM D1586-18. Drill rig must be designed for driving up to sites with roadway or firm ground access. It shall be ready to drill using hollow stem auger and mud rotary drilling. Two hydraulic leveling jacks shall be fitted at the rear of the vehicle and at least one on the front. The drill mast shall be operated hydraulically and shall be fitted with sheaves for at least three (3) cables and one (1) rope. Power winches of not less than 12-ton capacity and with not less than 150 feet of 3/4-inch diameter steel cable shall be mounted on front of the truck. The drill rig must have the rotary capabilities of operating at a forward speed from 0 to 650 rpm. The rotary drive shall have a reverse gear and a maximum drill spindle torque of not less than 7,000 ft/lbs. The vertical drive shall have a stroke of at least 60 inches, downward thrust of not less than 16,000 lbs, and retraction of at least 24,000 lbs. Weight of the drill rig and tooling shall not exceed 24,000 lbs, and length of rig from bumper to bumper shall not exceed 24 feet. The drill rig shall also be equipped with a pump capable of pumping bentonite drilling fluid required to keep the borehole open and remove cuttings, as well as cementitious grout mixes to abandon the borings or wells.

d. DRILL RIG D: Winch-Operated, Skid-Frame-Type Drill with rotary capability and automatic driven hammer OR cathead driven safety hammer for conducting a SPT per ASTM D1586-18. The rig shall be designed for geotechnical split-spoon sampling, rock and concrete coring and drilling in tight quarters or from floating plants. The drill rig shall be capable of being set up on a drill platform such as a barge or a pontoon with horizontal setup space as small as 7-feet by 7-feet. Maximum drill rig weight shall not exceed 1,900 lbs.

e. DRILL RIG E: Portable (Hand-Carried) Pipe Driving Winch with automatic driven hammer OR cathead driven safety hammer for conducting borings up to 50-feet deep including a SPT per ASTM D1586-18. The rig shall be designed to perform portable geotechnical drilling in tight quarters, wetlands, or from floating plants with horizontal setup space as small as 7-feet by 7-feet.

f. ‘AW’ size and ‘N’ or ‘NW’ size drill rods;

g. Rotary tricone and drag-type drill bits, and split-spoon & split-barrel samplers, to perform 3-inch through 8-inch borings;

h. Flight augers (4 ½-inch through 8-inch O.D.), hollow stem augers (3 ¼-inch, 4 ¼-inch, 6 ¼-inch, 8 ¼-inch I.D.), and iron pipe casing (4-inch through 10-inch I.D.);

i. Triple tube core barrels (NQ-3, HQ-3, and PQ-3) and appropriate bits to include diamond and carbide surfaced as well as bottom and internal discharge. Double tube core barrel (6-inch x 7 ¾-inch or equivalent) and appropriate bits to include diamond and carbide surfaced as well as bottom and internal discharge. HQ Wireline core barrel system with a split-inner tube and appropriate bits to include diamond and carbide surfaced as well as bottom and internal discharge;

j. 3-inch and 5-inch undisturbed thin wall sample tubes;

k. 3-inch and 5-inch Hvorslev type, fixed piston undisturbed samplers and sample tubes;

l. Powdered Wyoming bentonite, Type I or Type II Portland cement, medium Wyoming bentonite chips, and barite drilling fluid additive;

m. Mud pumps, grout pumps, auxiliary pumps, tremie pipe, hoses, mud pan or tank, mud mixing apparatus, and water tanks. One water tank must have a minimum size of 300 gallons. The mud pump and/or grout pumps shall have the capacity for, and be designed for, the type of work listed in this statement of work and in the individual project scope of work included in each delivery order upon issuance;

n. All hand tools needed to complete subsurface exploration work, routine maintenance, and setup and cleanup of the drill site;

o. Portable propane torches for winter work and to heat wax for sealing undisturbed samples;

p. Sample inspection table measuring at least 3-feet x 3-feet x 42-inches high with a pipe vise mounted on one end;

q. Bailers suitable for removing water, drilling mud, or sand from boreholes or instruments;

r. Portable steam-cleaner;

s. Precise survey equipment to determine the elevation of boreholes and stadia distances, including a transit or level with a tripod and a leveling survey rod. The survey rod shall be legible and read in feet, be graduated in 10ths and 100ths of a foot, and be capable of telescoping, or otherwise accurately extending, to at least 25 feet;

t. Adapters, tools, and related items, which are not specifically listed herein, but are necessary for use with the equipment in achieving the performance requirements set forth in, SECTION 1: GENERAL, shall be furnished or made available for use as required;

2.1 Projects that are likely to encounter contaminated soils, water, and rock or requiring subsurface samples for chemical analysis may require the following:

a. Level D personal protective equipment as defined by OSHA;

b. Containerizing contaminated soils and/or drilling fluids;

c. Decontamination equipment and supplies capable of satisfactorily cleaning all drilling and sampling equipment before the Contractor arrives at the drilling site, and between each sample if such equipment or supplies are deemed necessary in the scope of work.

2.2 The Government will furnish appropriate containers for all soil and rock samples, except undisturbed samples, which will be retained in the sampling tube provided by the Contractor.

SECTON 3: CONE PENETRATION TESTING (CPT)

The following criteria must be met for the cone penetration testing procedure (cone penetration testing will be completed in conjunction with the rental of one of the drill rigs above):

a. The CPT should be conducted in accordance with ASTM D5778-20. If CPTu (Piezocone) tests are being conducted, a Type 2 Piezocone shall be used with the pore pressure element location immediately behind the cone tip (u2) with a new saturated filter element prior to each test.

b. Prior to penetration, the cone temperature should be adjusted to the anticipated soil temperature, as reasonably practical.

c. Routine profiling is to be conducted with a 10-ton capacity cone.

d. Calibration of the cone will be done in accordance with ASTM D5778-20. There will be a piezometric calibration chamber to test the cone prior to starting a delivery order and then calibrations will be completed every tenth probe hole.

3.1 CPT data reporting must fulfill the following requirements:

a. The data report for the cone penetration testing, at a minimum, shall meet the reporting requirements outlined by ASTM D5778-20. The raw data collected during penetration must also be supplied to the Government.

b. The graphical data shall be supplied in a format produced by the program Digital Coneplot available from ARA/Vertek or by the program Rapid CPT by Dataforensics.

c. CPT data should be presented in the following units:

Depth feet

Tip Resistance (qt) tsf

Sleeve Friction (fs) tsf

Pore Pressure (u2) psi

Inclination ° (degrees)

Temperature °F (Fahrenheit)

3.2 Graphical (X-Y) plots shall be submitted for each cone test with a test report. The format of the plots should be as follows:

X-Axis Y-Axis

Tip Resistance (qt) Depth

Sleeve Friction (fs) Depth

Pore Pressure (u2) Depth

Friction Ratio (Rf) Depth

Soil Behavior Type (SBTBq) Depth

SECTION 4: MOBILIZATION AND DEMOBILIZATION

a. Mobilization and Demobilization (Mob and Demob) covers all costs, including per diem, incurred in moving the drilling equipment, personnel, support vehicles, and supplies to the work site and returning them to the Contractor's permanent facility when the job is completed. Initial and final cleaning and decontamination of the drilling equipment and tools, by steaming if necessary, shall also be included in the mobilization and de mobilization costs. Mobilization shall end when drilling and sampling has started.

Demobilization begins once the last boring is grouted or the Contracting Officer or the Contracting Officer’s Representative designates the job is complete. This payment will be the same for each job within the specific area called for in the delivery order, regardless of its location within that area, according to the amounts stated in the bid schedule.

b. Only one mob and demob charge per drill rig and/or per floating plant (barge unit) per delivery order will be allowed unless approved by the Contracting Officer.

SECTION 5: SITE SAFETY, UTILITY LOCATES, NOTIFICATIONS, ROAD USE

PERMITS, MONITORING WELL PERMITS, BORING AND WELL

ABANDONMENTS

a. All drilling operations shall be conducted in accordance with the current version of the U.S. Army Corps of Engineers Safety and Health Requirements Manual (EM 385-1-1).

Section 18.H, Drilling Equipment, will serve as the primary reference for safety during drilling operations. Drilling tools shall not extend more than 1 foot, or the minimum necessary to connect or disconnect drilling tools, above the top of the drill mast, and the use of slip rings or rod slipping devices is prohibited.

b. Utility meetings for the purpose of locating buried lines, pipes, cables, and all underground utilities shall be conducted by the Contractor unless directed otherwise by the Contracting Officer’s Representative. The Contractor shall abide by all applicable state laws concerning utility locates.

c. Road use permits and parking permits at drill sites shall also be the responsibility of the Contractor unless otherwise directed by the Contracting Officer’s Representative. The Contractor shall abide by all applicable state laws concerning road use and provide any necessary safety equipment, such as but not limited to cones, barriers, lighting, for operation on and adjacent to roadways, walkways or other areas that could pose a hazard to the public.

d. The Contractor shall be responsible for meeting all Health Department and/or Department of Natural Resource filing requirements.

e. The Contractor shall be responsible for all notifications, shall obtain permits, and meet abandonment criteria when required in the appropriate state and county. The Government is not exempt from paying permit fees, or from the coordination and filing requirements.

SECTION 6: MILEAGE

a. No separate payment for daily mileage shall be made for the drill rigs or support vehicles, this shall be included in the cost of drill rig rental. The movement of equipment from boring to boring is addressed in, SECTION 10: OPERATING AND WORKING

TIME.

SECTION 7: PROJECT LOCATIONS

a. Two contracts may be awarded as a result of this acquisition and the equipment could be used anywhere in the contract(s) award area(s) within the geographical limits of the east and west areas of the St. Paul District shown on the enclosed map.

SECTION 8: OPERATING PERSONNEL

a. The Contractor shall provide an experienced crew consisting of one driller and one driller’s assistant.

b. "Experienced" for the driller is defined as a minimum of 2 complete years of current experience operating the assigned drill rig(s) or equivalent for broad-based geotechnical exploration work and monitor well installations (not exclusively water well work) and drilling and sampling subsurface materials typical of those in the contract area.

c. "Experienced" for the driller’s assistant is defined as 1 complete year of current experience assisting an experienced driller in broad-based geotechnical exploration work

(not exclusively monitor well and/or water well work).

d. The drill crew shall be experienced and skilled in drilling with hollow stem augers, flight augers, setting and pulling casing, backfilling boreholes, installing and abandoning monitoring wells, observation wells, and dewatering wells, piezometers, inclinometers, and other instrumentation, mixing and drilling with bentonite drilling mud, drive sampling, standard penetration testing, taking thin wall and fixed-piston-type undisturbed samples, and core drilling in hard and soft rock. The drill crew shall be OSHA certified to perform subsurface exploration work in the appropriate level of personal protective gear.

The Contractor shall ensure that the operating personnel have the proper drilling licenses and certifications in accordance with state and federal guidelines and regulations prior to the commencement of drilling operations. No payment for an additional helper shall be authorized except as approved by the Contracting Officer prior to the execution of the individual delivery order.

SECTION 9: MAINTENANCE AND REPLACEMENT OF EQUIPMENT

a. All repairs to equipment and the replacement of parts, including drill bits, split-spoon samplers, and core barrels, and all drilling apparatus shall be made at the expense of the Contractor. The working equipment supplied by the Contractor shall be in good working condition and shall be kept in good working condition when in use. Downtime or other time performing maintenance or equipment repairs shall not be authorized. The Contractor shall have spare replacement parts and supplies on hand for typical items that wear out or are consumed during the drilling process. This includes the following items, but not limited to: split-spoon samplers, auger teeth and/or bits, roller bits, powdered bentonite drilling mud, retainer baskets, drive shoes, and other expendable drilling supplies.

SECTION 10: OPERATING AND WORKING TIME

a. Hourly rates for the drilling equipment are for drilling time only and include payment for supplies and personnel necessary to perform the work as listed in the scope of work and requested in each delivery order. Drilling time is defined as all work necessary to accomplish drilling and sampling to include setup time, moving drilling equipment between borings, cleanup time not related to mob or demob, instrument installation and abandonment, backfilling of boreholes, containerizing contaminated soils and/or drilling fluids, and Government-directed non-drilling time. Powdered bentonite for mixing drilling mud and added to cementitious grout mixtures shall be included in the supplies for drilling, and no separate payment will be made. Drilling with equipment or using techniques that are not productive, as determined by the Contracting Officer’s Representative, will not be authorized for payment. Time for performing routine maintenance or equipment repairs will not be authorized for payment.

b. Work days: The Contractor shall be prepared to operate 10 hours per day, 6 days per week until completion of the delivery order, weather and other conditions permitting.

Work on Sundays and holidays is not anticipated under this contract, except when deemed necessary and approved by the Contracting Officer. Alternative work schedules may be considered. The Contractor shall be responsible for travel expenses related to changing staff or transporting them to and from the field site.

c. Suspension of work: When, in the opinion of the Contracting Officer or the Contracting Officer’s Representative, conditions at the drill site during the periods of operation preclude the possibility of obtaining satisfactory production, temporary suspension of work will be ordered by the Contracting Officer, and payment will not be made for rental time during such periods of suspension.

SECTION 11: PER DIEM

a. The per diem is invoiced on a per individual basis. The number of individuals in the crew, as requested in the delivery order, will determine the number of per diem days allowed for that delivery order. Per diem will be authorized if at least 8 drilling hours have been worked for the day or for a mob or demob day with at least 4 hours of drilling time. Additional per diem days resulting from excessive downtime, caused by the Contractor, shall not be invoiced for payment. Per diem will not be allowed for scheduled non-work days except when the standard work schedule of 10 hours per day, 6 days per week is utilized, or, if an alternate work schedule is approved by the Contracting Officer’s Representative. Alternate work schedules that adversely affect the project schedule or increase cost to the Government will not be considered. Per diem days for mobilization and demobilization will not be allowed, as defined in SECTION 4:

MOBILIZATION AND DEMOBILIZATION.

SECTION 12: PIEZOMETER AND MONITORING WELL MATERIALS

a. Protective steel or black iron casing (4, 6, or 8-inch diameter) with lockable covers meeting state and local well code requirements where the work will be performed;

b. Piezometer and monitor well construction materials shall be new and consist of nominal 2-inch diameter PVC riser and screens. The components shall meet ANSI Schedule 40 thickness and strength specifications and have an inside diameter of no less than 2.00 inches. All PVC components shall have flush threaded joints with O-rings for watertight connections. Well screens shall have a continuous-slot design with a No. 10 slot screen (0.010-inch);

c. Filter sand for piezometers and monitoring wells shall be commercially produced, packaged, and washed silica sand. Individual 50 lbs packages must be clearly marked with gradation information. The filter sand shall be well graded and be retained on U.S.

Standard Sieves No. 16 through No. 80. and shall have less than 10% passing the U.S.

Standard Sieve No. 80;

d. Protective guard posts shall be at least four inches in diameter and made of reinforced concrete, decay resistant wood, or ANSI Schedule 40 steel or black iron pipe. Posts or pipes shall be 8-feet in length. Pipes shall be filled with concrete, or capped with an overlapping, threaded, or welded steel or iron cap.

SECTION 13: DELIVERY ORDERS

a. The St. Paul District Contracting Officer will issue Delivery Orders under this contract.

SECTION 14: CONTRACT CEILING – GUARANTEED MINIMUM

a. In accordance with Section C, FAR clause 52.216-22 entitled, “Indefinite Quantity,” the maximum value of the IDIQ is $5,000,000.00. The cumulative value of all Delivery Orders issued under the Vehicle shall not exceed $5,000,000.00. The minimum guarantee is $25,000.00, which may be satisfied via Delivery Order awards.

(End of Summary of Changes)