Bid Package- Section F - Technical Specs_Prado Regional Park Drilling New Irrigation Well~1.pdf

SECTION F

TECHNICAL SPECIFICATIONS

Prado Regional Park Drilling New

Irrigation Well

FOR

16700 Euclid Ave, Chino, Ca, 91708

PROJECT NO.: 30.30.0200

WELL DRILLING

TECHNICAL SPECIFICATIONS

TABLE OF CONTENTS

01 11 00 .................................................................................................. WELL SUMMARY OF WORK 01 29 00 ............................................................................................. WELL PAYMENT PROCEDURES 01 30 00 ......................................................................................................................... SUBMITTALS 33 21 13.01 ........................................................................................ MOBILIZATION/DEMOBILIZATION 33 21 13.02 ......................................................................... CONDUCTOR CASING AND SANITARY SEAL 33 21 13.03 ...................................................................................................... WATER WELL DRILLING 33 21 13.04 ....................................................................................................... GEOPHYSICAL LOGGING 33 21 13.05 ...................................................................................... ISOLATED AQUIFER ZONE TESTING 33 21 13.06 .......................................................................................................... WATER WELL CASING 33 21 13.07 ...................................................................................... WELL SCREEN AND GRAVEL PACK 33 21 13.08 ................................................................................... GROUTING AND BOREHOLE SEALING 33 21 13.09 ........................................................................................................... WELL DEVELOPMENT 33 21 13.10 ...................................................................... WELL PUMPING TEST AND SPINNER SURVEY 33 21 13.11 ..................................................................................... PLUMBNESS AND ALIGNMENT TEST 33 21 13.12 .................................................................. WELL VIDEO INSPECTION AND WELL CAPPING 33 21 13.13 ............................................................................................................ WELL DISINFECTION

San Bernardino County Prado Regional Park Irrigation Well

Bid Documents

WELL SUMMARY OF WORK

01 11 00 - 1

SECTION 01 11 00

PART 1 GENERAL

1.01 SUMMARY OF CONTRACTOR’S WORK COVERED BY CONTRACT DOCUMENTS

A. Obtaining permit for drilling, installing, developing, testing, and disinfecting new water production well. The purpose of the well is to replenish the park lake for recreational water use and irrigate park landscape. Additional project information is provided in Appendix A.

Appendix A:

• Figure 1 – Well Location Map

• Figure 2 – Preliminary Design, Prado Regional Park Well

• Table 1 – Preliminary Well Design Summary

• Example Camera Tube Connection Box

• Example Geologic Logs Showing Expected Geology

The new well, when the appropriate permanent pump assembly is installed, shall be capable of producing 800 gallons per minute (gpm) continuously at 110 feet total dynamic head. The Contractor’s Work includes, but not limited to, the following items:

1. Obtaining well drilling permit from the County of San Bernardino.

2. Providing and implementing erosion control for all Work at the well site.

3. Constructing a temporary percolation pond near the well site for discharging relatively clear wastewater generated during the well construction, development, disinfection, and testing.

4. Mobilizing a reverse rotary drilling rig and its associated equipment at the well site including reservoirs for fluid containment and solids control equipment.

5. Hand auger probing at borehole locations to at least 5 feet below ground surface to ensure absence of underground structures prior to drilling.

6. Installing a conductor casing.

7. Drilling and sampling the pilot borehole to the estimated depth specified in this document. The actual final borehole depth will be determined by Engineer based on the findings.

8. Conducting deviation surveys at 100-ft intervals using a Totco drift indicator, or approved equal while drilling the pilot borehole.

9. Conducting geophysical survey in pilot borehole.

10. Conducting zone isolation testing inside the pilot borehole.

11. Reaming the pilot borehole to its final diameter to accommodate well casing installation.

12. Performing a caliper survey on the final borehole prior to the installation of the well casing and screen.

13. Installing well casing and gravel feed tube to specified depths in the reamed borehole, with centralizers on well casing.

14. Chlorinating and installing filter pack.

01 11 00 - 2

15. Installing transition seal and a sanitary cement seal above the transition seal in the borehole annular space.

16. Performing initial well development by swabbing, bailing, and airlifting.

17. Removing sediment that accumulated at the bottom of the well during initial well development.

18. Mobilizing the test pump and support equipment.

19. Installing a test pump and performing final development.

20. Performing aquifer testing. The Engineer will collect groundwater samples near the end of aquifer tests for water quality laboratory analysis.

21. Removing the test pump from the well.

22. Removing sediments that have accumulated during pumping development.

23. Performing plumbness and alignment surveys.

24. Containing, characterizing, handling, transportation, and offsite disposal of waste drill cuttings and drilling mud.

25. Discharging relatively clear wastewater generated during the well construction, development, disinfection, and testing into a temporary percolation pond near the well site.

26. Performing a downhole video survey.

27. Demobilizing all equipment, site cleanup, backfilling and compacting temporary percolation pond, site restoration, and installing well cover.

28. Furnishing logs, daily records, and other items as specified by Engineer.

B. Estimated borehole and well depths are provided in Appendix A. The Engineer may change quantities, materials and/or cancel Work items specified in the following documents based on conditions encountered in the field. In addition, the Engineer reserves the right to discontinue the construction of any well if at any time the Engineer believes it is in the County's best interest to discontinue. In such a case, the Contractor shall be paid at the prices bid for the actual Work accomplished.

C. Standby time shall be paid for any portion of a normal work day when the Engineer orders work to cease or when other activities at the site dictate shutdown as approved by the Engineer in writing.

D. Downtime shall mean that time, other than standby time, during which drilling could occur but does not or when machinery is broken down, materials or equipment are not available, or the Contractor elects not to drill. All downtime shall be at the sole expense of the Contractor.

E. The Contractor shall be responsible for giving the Engineer advance notice prior to performance of specific Work items as specified within individual sections of Specifications.

F. Portions of the Work require operations that are commonly performed by specialists and subcontractors. Well driller, well logging and testing firms, and all others employed in constructing the well be approved by the Engineer in writing.

G. Throughout the period of construction, the Contractor shall keep the Work site free and clean of all rubbish and debris. Protective barriers and other safety protection necessary to protect the public and workers shall be provided by the Contractor. The Contractor shall protect all existing fences, roads, walls, buildings, trees, park facilities, and landscape during the progress of Work. In the event of damage to such

01 11 00 - 3 property, the Contractor shall, at their own expense, immediately restore the property to a condition equal to its original condition and to the satisfaction of the Engineer.

This provision includes damage to surface and subsurface utilities. After completion of the Work, the Contractor shall remove from the premises and Work areas all materials, tools, debris, drill cuttings, and wastewater from the drilling and testing operations. At the completion of the wells, the site shall be cleared of all materials and left in a condition acceptable to the Engineer.

H. The Contractor shall at all times perform their operation in such a manner as to prevent the introduction of contaminants into the well. Tools, casings, pumps, and other elements shall be kept clean. Water supply and drilling fluids shall be protected from contamination. The Engineer will require the materials and equipment to be cleaned and disinfected if, in the Engineer’s sole opinion, the operation is introducing contaminants into the well.

I. The Contractor shall be responsible for disposing all materials generated during borehole drilling, well construction, well development, and well testing.

J. Lost Holes:

1. Holes Abandoned for Cause: If the Engineer determines that for reasons beyond the control of the Contractor it is necessary to stop drilling, or the hole is lost before the objective or desired depth is reached and further attempts to save or complete the hole are not practical, the hole will be ordered Abandoned for Cause. The Contractor shall fill and plug the hole according to the most restrictive city, county, state and/or federal regulations. The Contractor will be reimbursed for the footage drilled and other operations and for moving to an alternative location.

2. Defective Holes: If the Engineer determines that the hole is lost due to negligence, incompetence, or malpractice on the part of the Contractor or their personnel, or to the use of defective or unsuitable equipment, Engineer will immediately notify the Contractor in writing of Engineer’s decision and order the hole abandoned. If a hole does not meet the requirements set forth herein, or if the Contractor fails to drill a hole to the depth specified by the Engineer within the scope of the agreement, the hole will be declared abandoned. Any hole that cannot be corrected to the required tolerance for alignment will be declared abandoned. The Contractor, at their own expense, shall fill and plug the hole(s) according to the most restrictive city, county, state and/or federal regulations.

Contractor shall drill a new hole at an alternate site in the immediate area approved by the Engineer. The Contractor will not be paid for any footage drilled or for other operations performed in any hole abandoned because of defects.

1.02 WORK NOT COVERED BY CONTRACT DOCUMENTS

A. None.

1.03 PROVISIONS FOR FUTURE WORK

01 11 00 - 4

1.04 OWNER-FURNISHED PRODUCTS

PART 2 PRODUCTS (NOT USED)

PART 3 EXECUTION (NOT USED)

END OF SECTION

PAYMENT PROCEDURES

01 29 00 - 1

SECTION 01 29 00

WELL PAYMENT PROCEDURES

1.01 SUBMITTALS

A. Informational Submittals:

1. Schedule of Values: Submit on AIA Document G703 or other form as required by the County.

2. Application for Payment.

3. Final Application for Payment.

4. Project Schedule

1.02 CASH ALLOWANCES

1.03 SCHEDULE OF VALUES

A. Prepare a separate Schedule of Values for each well location to be completed for the

Work under the Agreement.

B. Upon request of Engineer, provide documentation to support the accuracy of the Schedule of Values.

C. Unit Price Work: Reflect unit price quantity and price breakdown from conformed

Bid Form.

D. Lump Sum Work:

1. Reflect specified cash allowances and alternates, as applicable.

2. List bonds and insurance premiums, mobilization, demobilization, preliminary and detailed progress schedule preparation, equipment testing, facility startup, and contract closeout separately.

E. An unbalanced or front-end loaded schedule will not be acceptable.

F. Summation of the complete Schedule of Values representing all the Work shall equal the Contract Price.

G. Submit Schedule of Values in a spreadsheet format compatible with latest version of Excel.

1.04 SCHEDULE OF ESTIMATED PROGRESS PAYMENTS

A. Show estimated payment requests throughout Contract Times aggregating initial

Contract Price.

01 29 00 - 2

B. Base estimated progress payments on initially acceptable progress schedule. Adjust to reflect subsequent adjustments in progress schedule and Contract Price as reflected by modifications to the Contract Documents.

1.05 APPLICATION FOR PAYMENT

A. Transmittal Summary Form: Attach one Summary Form with each detailed

Application for Payment for each schedule and include Request for Payment of Materials and Equipment on Hand as applicable. Execute certification by authorized officer of Contractor.

B. Use detailed Application for Payment Form suitable to the County.

C. Provide separate form for each schedule (well site) as applicable.

D. Include accepted Schedule of Values for each schedule (well site) and provide Lump

Sum Work and the unit price breakdown for the Work to be paid on a unit priced basis.

E. Include separate line item for each Change Order and Proposed Change Order executed prior to date of submission. Provide further breakdown of such as requested by Engineer.

F. Preparation:

1. Round values to nearest dollar.

2. Submit Application for Payment, including a Transmittal Summary Form and detailed Application for Payment Form(s) for each schedule as applicable, a listing of materials on hand for each schedule as applicable, and such supporting data as may be requested by Engineer.

1.06 MEASUREMENT—GENERAL

A. Weighing, measuring, and metering devices used to measure quantity of materials for

Work shall be suitable for purpose intended and conform to tolerances and specifications as specified in National Institute of Standards and Technology, Handbook 44.

B. Whenever pay quantities of material are determined by weight, material shall be weighed on scales furnished by Contractor and certified accurate by state agency responsible. Weight or load slip shall be obtained from weigher and delivered to Owner’s representative at point of delivery of material.

C. If material is shipped by rail, car weights will be accepted provided that actual weight of material only will be paid for and not minimum car weight used for assessing freight tariff, and provided further that car weights will not be acceptable for material to be passed through mixing plants.

D. Vehicles used to haul material being paid for by weight shall be weighed empty daily and at such additional times as required by Engineer. Each vehicle shall bear a plainly legible identification mark.

01 29 00 - 3

E. Materials that are specified for measurement by the cubic yard measured in the vehicle shall be hauled in vehicles of such type and size that actual contents may be readily and accurately determined. Unless all vehicles are of uniform capacity, each vehicle must bear a plainly legible identification mark indicating its water level capacity. Vehicles shall be loaded to at least their water level capacity. Loads hauled in vehicles not meeting above requirements or loads of a quantity less than the capacity of the vehicle, measured after being leveled off as above provided, will be subject to rejection, and no compensation will be allowed for such material.

F. Units of measure shown on Bid Form shall be as follows, unless specified otherwise.

Item Method of Measurement

EA Each - field count verified by Engineer

HR Hour – field measure verified by Engineer

LF Linear Foot—field measure verified by Engineer LS Lump Sum

1.07 PAYMENT

A. Payment for all Lump Sum Work shall cover all costs including the labor, materials, and services necessary to complete all work including but not limited to installation, operation, maintenance, removal, all appurtenances, and incidentals as follows:

Item Description Mobilization and all associated activities including but not limited to Erosion Control/ Temporary Facilities including Percolation Pond/ Demobilization/ Site Restoration/ Cleanup

Work under this item shall include preparatory operations, including, but not limited to, those necessary for the movement of personnel, equipment, materials and incidentals to the Project site, safety training, site access coordination with the County of San Bernardino and maintaining the Project sites in a safe and orderly manner during construction. Work under this item shall include, but not be limited to, all costs related to construction, operation, maintenance, pond perimeter safety fencing, and backfilling/compacting of a temporary percolation pond in the vicinity of the well as directed by the Engineer to be used for disposal of wastewater from zone testing, well development, testing, and disinfection into the percolation pond as approved by Engineer. This item also includes costs incurred for securing bonds, permitting, insurance, and financing prior to beginning Work. Mobilization and temporary facility costs shall not exceed 15 percent of the total bid amount. Work included under this pay item will be paid after all equipment has been mobilized to sites and after, in the judgment of Engineer, Work has commenced.

Payment shall be at the lump sum bid price. Payment will be based on an estimate of the percentage of Work completed in place.

01 29 00 - 4

Containment and Offsite Disposal of Drill Cuttings and Drilling Mud

Work under this item shall include, but not be limited to, all costs related to disposal of drill cuttings, drilling mud and muddy wastewater to an offsite disposal facility approved by Engineer. The Engineer shall determine which wastewater can or cannot be discharged to percolation pond.

Payment shall be at the lump sum bid price. Payment will be based on an estimate of the percentage of Work completed in place.

Disinfect and Cap Well

Work under this item shall include disinfection of the well, wastewater handling, treatment, and laboratory analysis.

Payment shall be at the lump sum bid price. Payment will be based on an estimate of the percentage of Work completed in place.

B. Payment for Unit Price items covers all costs including the labor, materials, and services necessary to furnish, install, operate, and maintain the following items.

Conductor Casing and Sanitary Seal

Work under this item shall include, but not be limited to, installation of conductor casing and sanitary seal for well as described in the specifications.

Payment shall be at the unit price (Linear Foot) detailed in the bid table. Payment will be based on the actual footage of casing installed as determined by Engineer.

Noise Control Barrier Walls

If used, Work under this item shall include, but not be limited to, furnishing, erecting, removing, and maintaining noise control barrier walls in accordance with the Project specifications as directed by the Engineer. Compliance with applicable noise regulations and noise control monitoring requirements are part of this activity.

Payment shall be at the at unit price (Linear Foot) for the duration of the drilling rig on-site.

Borehole Drilling Work under this item shall include all material, labor, equipment, services, and fees for all activities associated with drilling borehole as described in the specifications.

Payment shall be at the unit price (Linear Foot) detailed in the bid table. Payment will be based on the actual footage installed as determined by the Engineer.

01 29 00 - 5

Geophysical Surveys

If used, Work under this item shall include, but not be limited to, completing geophysical logging in the well borehole as described in the specifications.

Payment shall be at the unit price (Each Suite of Surveys) detailed in the bid table. Payment will be based on the number of successfully completed suite of surveys as determined by the Engineer.

Isolated Aquifer Zone Testing

Work under this item shall include, but not be limited to, completing isolated aquifer zone testing in well borehole as described in the specifications.

Payment shall be at the unit price (Each Zone) detailed in the bid table. Payment will be based on the number of successfully tested zones as determined by Engineer. Unsuccessful zone tests or breached tests rejected by the Engineer will not be paid.

Borehole Reaming Work under this item shall include, but not be limited to, reaming the pilot borehole to final diameter as described in the specifications.

Payment shall be at the unit price (Linear Foot) detailed in the bid table. Payment will be based on an estimate of the percentage of Work completed in place.

Caliper, Video Camera, and Plumbness and Alignment Surveys

Work under these items shall include, but not be limited to, completing surveys as described in the specifications.

Payment shall be at the unit price (Each Survey) detailed in the bid table. Payment will be based on the number of successful surveys completed as determined by the Engineer. Unsuccessful surveys attempted by the surveyor or rejected by the Engineer will not be paid.

Well Casings, Gravel Feed Tube and Camera Tube

Work under these items shall include, but not be limited to, furnishing and installing well casings, gravel feed tube, camera tube as described in the specifications.

Payment shall be at the unit price (Linear Foot) detailed in the bid table. Payment will be based on the actual footage successfully installed as determined by the Engineer.

Camera Tube Connection Box

Work under these items shall include, but not be limited to, furnishing and installing camera tube connection box as described in the specifications.

Payment shall be at the unit price (Each Unit) detailed in the bid table. Payment will be based on the actual footage successfully

01 29 00 - 6

1.08 NONPAYMENT FOR REJECTED OR UNUSED PRODUCTS

A. Payment will not be made for following:

Gravel Pack, Transition Seal, Cement and Sanitary Seal

Work under these items shall include, but not be limited to, furnishing and installing borehole materials into the annular space between the well casing and the borehole wall and all associated services, tests, fees as described in the specifications.

Payment shall be at the unit price (Linear Foot) detailed in the bid table. Payment will be based on the actual footage installed as determined by the Engineer.

Primary Well Development by Brushing, Swabbing and Airlifting

Work under this item shall include, but not be limited to, conducting brushing, double-swab with simultaneous airlifting development of the well as described in the specifications or a satisfactory equivalent as determined by the Engineer.

Payment shall be at the unit price (Hour), to the nearest rounded hour detailed in the bid table. Payment will be based on the actual hours of active development completed as determined by the Engineer. Time spent for tool installation, removal, relocating tool, and inactivity are not payable.

Secondary Well Development by Pumping and Surging

Work under this item shall include, but not be limited to, conducting pumping and surging development of the well as described in the specifications.

Payment shall be at the unit price (Hour), to the nearest rounded hour detailed in the bid table. Payment will be based on the actual hours of active development pumping and surging completed as determined by the Engineer. Time spent for tool installation, removal, relocating the pump to another depth, and inactivity are not payable.

Aquifer Tests Work under this item shall include, but not be limited to, all materials, equipment, and labor to conduct and monitor step drawdown and constant-rate pumping tests as described in the specifications.

Payment shall be at the unit price (Hour) ), to the nearest rounded hour detailed in the bid table. Payment will be based on the actual hours of active pumping completed as determined by Engineer.

Time for water level recovery after each aquifer test is not payable.

Abandonment of Borehole Work under this item shall include, but not be limited to, labor, permitting, equipment, and materials as specified in local applicable regulations.

It is not anticipated that the borehole will be abandoned, but in the event it is, payment shall be at the unit price (Linear Foot) detailed in the bid table. Payment will be based on the actual footage

01 29 00 - 7

1. Loading, hauling, and disposing of rejected material.

2. Quantities of material wasted or disposed of in manner not called for under

Contract Documents.

3. Rejected loads of material, including material rejected after it has been placed by reason of failure of Contractor to conform to provisions of Contract Documents.

4. Material not unloaded from transporting vehicle.

5. Defective Work not accepted by Owner.

6. Material remaining on hand after completion of Work.

1.09 PARTIAL PAYMENT FOR STORED MATERIALS AND EQUIPMENT

A. Partial Payment: No partial payments will be made for materials and equipment delivered or stored unless Shop Drawings and preliminary operation and maintenance data is acceptable to Engineer.

B. Final Payment: Will be made only for products incorporated in Work; remaining products, for which partial payments have been made, shall revert to Contractor unless otherwise agreed, and partial payments made for those items will be deducted from final payment.

PART 3 EXECUTION (NOT USED)

County of San Bernardino SUBMITTALS Prado Regional Park Irrigation Well 01300 - 1

SECTION 01300

SUBMITTALS

PART 1: GENERAL

1.01 DESCRIPTION

This section includes the requirements for submittals for shop drawings, materials certificates, testing, and record drawings.

1.02 LIST OF SUBMITTALS

The Contractor shall provide a list of all submittals required for the project along with a schedule of when these submittals are to be submitted. This list shall be provided prior to or with the first shop drawing submittals.

1.03 SHOP DRAWINGS

A. Shop drawings shall be approved prior to the Contractor or any of his subcontractors or suppliers performing related work. Any work completed without approved shop drawings is at the Contractor’s sole risk and is subject to rejection and replacement at the Owner’s discretion. The Contractor shall allow adequate time for approval including rejections and re-submittals.

B. The Engineer will return shop drawing submittals to the Contractor within 10 calendar days after receipt of same.

C. The use of contract drawing reproductions for shop drawings is subject to rejection.

D. If the Contractor submits shop drawings of equipment by manufacturers other than those listed in the specifications, he shall provide the following information with the submittal:

1. The name and address of at least three companies or agencies that are currently using the equipment.

2. The name and telephone number of at least one person at each of the above companies or agencies whom the Engineer may contact.

3. A description of the equipment that was installed at the above locations. The description shall be in sufficient detail to allow the Engineer to compare it with the equipment that is proposed to be installed in this project.

E. Pipe shop drawings shall be submitted after the Contractor has potholed the project. Pipe shop drawings submitted prior to potholing are subject to rejection.

F. Refer to individual specification sections for specific submittals to be made.

1.04 CERTIFICATES

Prado Regional Park Irrigation Well 01300 - 2

Submit two copies of certificates as required in the individual specification sections.

1.05 TESTS

Submit two copies of test results as required in the individual specification sections.

1.06 RECORD DRAWINGS

A. Except where otherwise provided, the Contractor shall maintain, on the jobsite, a set of full-size contract Plans. On these he shall mark all as-built conditions, locations, configurations, and other details which may vary from the details represented on the bid Plans.

B. Upon completion of work, the Contractor shall provide the Owner with one complete set of Record Drawings indicating all changes or modifications made during construction. The markings on the drawings shall be clear and legible.

C. The Final Retention Payment will not be made until the Owner receives the red-lined as-built drawings from the Contractor, in addition to the standard notice of completion procedure.

1.07 WARRANTIES

The Contractor shall provide the manufacturer’s warranty for each piece of equipment that includes a warranty.

1.08 MEASUREMENT AND PAYMENT

A. This article defines the manner and method to develop the Lump Sum, Unit Price, and Allowance bid amounts of all items identified in the Bid Schedules. Bid amounts will include all plant, equipment, tools, materials, labor, fees, service, and all other items required to complete the work included in the Contract unless specifically excluded by this section. Work required for which no separate bid item is identified will be considered as a subsidiary obligation of the Contractor, and the cost therefore shall be included in the most applicable bid item. Compensation for completion of the Work will be determined by use of a schedule of values submitted and agreed to by the Owner.

B. Assign unit prices to lump sum items of work and calculate total prices, which aggregate the Contract Price. Base unit prices on costs associated with scheduled activities for each item of work. For any bid item broken down into unit prices, Contractor shall verify that the unit cost of the items does not extend beyond two decimal places and that the unit cost when multiplied by the unit quantity equals the exact bid item value with no remainder.

Submit preliminary Schedule of Values at the preconstruction meeting to the Owner for review and approval. Upon request Contractor shall provide support prices with data which will substantiate their correctness.

PART 2: MATERIALS

(Not Used)

Prado Regional Park Irrigation Well 01300 - 3

PART 3: EXECUTION

(Not Used)

Prado Regional Park Irrigation Well Bid Documents

MOBILIZATION/DEMOBILIZATION

33 21 13.01 - 1

SECTION 33 21 13.01

1.01 SCOPE

A. This Section includes the Work necessary to mobilize, demobilize, set up, move equipment, and clean drill sites related to the drilling, construction, development, and testing of the production well located at Prado Regional Park. Contractor shall construct a temporary percolation pond at a location near the well site as specified by the County as a part of temporary facilities for discharging and percolating relatively clear wastewater generated during well drilling, construction, testing and development.

1.02 SUBMITTALS

1. Contractor shall be responsible for obtaining a drilling and well construction permit from the San Bernardino County Department of Public Health.

2. Construction plan for temporary percolation pond excavation.

PART 3 EXECUTION

3.01 GENERAL

A. Temporary Facilities and Controls: Provide the following temporary facilities and controls:

1. Temporary construction facilities, including temporary water for drilling and sanitary services.

2. Excavate and construct a temporary percolation pond near the well site at location specified by the County for discharging relatively clear wastewater generated during the well construction, development, disinfection, and testing. The pond shall hold 1.9 million gallons with dimensions of 6 feet deep, 1:1 sloped sides, and a 2-foot high earth berm around the top of the pond (210 feet by 210 feet at ground surface, or equivalent area). At completion of the Work, remove from Site and restore area.

3. Temporary controls, including: security, fire protection, and safety, including OSHA required notices and establishment of safety programs.

4. Security Fence:

a. Construct for the protection of materials, tools, equipment, and percolation pond.

b. At completion of the Work, remove from Site and restore area.

33 21 13.01 - 2

c. Provide access at all times and any necessary keys to Engineer and the County of San Bernardino (the County).

5. Parking Facilities: Provide within the Work area for personnel working on the Project.

B. Equipment: Adequate equipment shall be supplied for concurrent drilling, installation, development, and testing of the new water well. The type of equipment required consists of:

1. Reverse rotary drilling rig, drilling equipment, and associated self-contained fluid circulation equipment.

2. Temporary test pump, pump service rig, airlifting equipment, and equipment capable of setting and operating test pumps as specified in these Specifications.

3. Tanks and storage bins to contain drilling fluid, drill cuttings, high solids displacement water, and well development and test water from well.

4. Temporary pipelines/hoses, valves, pumps, tanks, and connections necessary to convey groundwater from the wells to temporary percolation pond onsite. The temporary percolation pond specifications are provided in Appendix A.

5. High pressure washer and miscellaneous associated equipment for removing mud and trackable debris from drilling equipment.

3.02 WORK LAYOUT

A. Set up well drilling rigs, drilling waste solid and liquid containment, pump service rigs, and other related equipment in area designated by Engineer.

B. Set up work facilities in a neat and orderly manner within designated area at location of choice.

C. Some obstructions may not be shown. Bidders are advised to carefully inspect the existing facilities before preparing their bids. The removal and replacement of minor obstructions such as fences, uneven ground, ground clearing, electrical conduits, water, waste piping, and similar items shall be anticipated and accomplished, even though not shown or specifically mentioned.

D. Major obstructions encountered that are not shown on Drawings, or could not have been foreseen by visual inspection of the site prior to bidding, should immediately be brought to the attention of the Engineer. The Engineer will make a determination on proceeding with the Work.

E. Avoid contamination of the Project area. Do not dump waste oil, rubbish, or other r similar materials on the ground.

F. The Contractor shall be responsible for disposal of all drilling fluids and drill cuttings.

G. During execution of the Work, the Contractor will daily clean the site, adjacent properties, and public access roads and dispose of waste materials, debris, and

33 21 13.01 - 3 rubbish to assure that grounds, public and private properties are maintained free from accumulations of waste materials and rubbish. Contractor will provide containers for collection and disposal of waste materials, rubbish, and debris.

H. Upon completion and acceptance of the well, remove from the site the drill rig and ancillary equipment, complete, and all debris, unused materials, temporary facilities, and all other miscellaneous items resulting from or used in the operations. Replace or repair any facility that has been damaged during the construction Work. Restore the site as nearly as possible to its original condition.

3.02 NOISE CONTROL

A. Provide noise barrier curtains as specified in Appendix A.

B. To the extent possible, conduct night time drilling operations while limiting the following activities: hammering on pipe, racking or making-up of pipe, rapid acceleration and deceleration of diesel engines, and picking up or laying down drill pipe.

C. If, at any time, noise control is requested by the Engineer, take immediate corrective action through drilling equipment modifications, addition of supplemental noise abatement equipment, or changes in operating procedures.

3.03 EQUIPMENT INSPECTION AND CLEANING

A. The Contractor shall perform and document daily inspections of the drill rigs and support vehicles to check for leaks. Any leaks identified by the Contractor shall be reported to the Engineer and repaired immediately.

B. Downhole tools and equipment that may come in contact with tools or equipment that may be positioned directly above borehole or completed well shall arrive onsite free of surface deposits of friable solids; for example, mud, sand, grout, caked on cuttings and cleaned of grease, oils, and other petroleum products.

Except that normal amounts of thread joint compound on drill pipe and tool joints, and normal amounts of lubricating grease on mechanical equipment is allowed.

C. Clean downhole equipment, tools, and any other equipment that may come in contact with downhole equipment that becomes soiled with petroleum products to satisfaction of Engineer before resuming work on well.

D. Remove trackable mud, cuttings, sand, grout and other materials from undercarriage, tires and other surfaces of equipment prior to moving equipment on or across public roads and pathways.

E. Do not empty, spill, splash, or slosh containerized drilling mud and fluids onto ground surface while moving containers, pipes and equipment.

F. Cleanup drilling mud, settled solids, and other semi-liquids and solids that spill from, or are emptied from, equipment as it is being moved.

33 21 13.01 - 4

3.04 DEMOBILIZATION

A. Remove temporary above grade or buried utilities, equipment, facilities, and materials.

B. Backfill and compact temporary percolation pond.

C. Clean and repair damage, including damage to grass areas and pavement areas, caused by installation or removal of temporary facilities and equipment.

CONDUCTOR CASING AND SANITARY SEAL

33 21 13.02 - 1

SECTION 33 21 13.02

1.01 REFERENCES

A. The following is a list of standards which may be referenced in this Section:

1. American Petroleum Institute (API):

a. 5L, Specification for Line Pipe.

b. 5CT, Specification for Casing and Tubing.

2. American Water Works Association (AWWA): C206-57, Standard for Field Welding of Steel Water Pipe.

3. American Welding Society (AWS): AWS B2.1, Specification for Welding Procedure and Performance Qualification.

4. ASTM International (ASTM):

a. A53/A53M, Standard Specification for Pipe, Steel, Black and Hot-

Dipped, Zinc-Coated, Welded and Seamless.

b. A139 B, Standard Specification for Grade B, Electric-Fusion

(Arc)-Welded Steel Pipe (NPS 4 and Over).

5. San Bernardino County Department of Public Health well installation requirements.

A. Action Submittals:

1. Drawings and design data for well casing, welding collars, and centralizers.

2. Data sheets on grout composition for each grout batch.

B. Informational Submittals:

1. Copies of well permits obtained from the San Bernardino County

Department of Public Health.

2. Mill-test reports showing chemical composition of steel conductor casing.

3. Welders’ certifications.

4. Report of compliance. Report shall include an affidavit of compliance stating that materials used comply with applicable requirements of ASTM and other applicable standards.

5. Grout load tickets.

6. As-built Drawings showing details of construction materials, including dimensions and quantities of materials used.

C. The submittals shall be made in accordance with Section 01300, Submittals.

1.03 QUALITY ASSURANCE

A. Qualifications:

33 21 13.02 - 2

1. Welders: Certified in accordance with AWS B2.1 for Level AR-1 or AR-2 and in the 2G and 5G positions or the 6G position.

B. Regulatory Requirements:

1. The Contractor shall meet the San Bernardino County Department of Public Health well installation requirements for placing a sanitary seal.

2. Comply with applicable permits, laws, and regulations in placing a sanitary seal for water production well. The permits, laws and regulations shall include, but not be limited to, the following:

a. Federal, state, and local laws, regulations, and ordinances related to constructing sanitary seals in water wells.

PART 2 PRODUCTS

2.01 CONDUCTOR CASING

A. Properties: ASTM A53/A53M, Grade B, ASTM A139 B, Grade B, or as approved by Engineer. Material shall be new and unused.

B. Size: Diameter as specified in Drawings, fabricated in lengths not less than 20 feet except for pieces extending above ground which may be length as required, with a wall thickness of not less than 5/16 inch.

2.02 CENTRALIZERS

A. Materials: Same chemical composition and physical properties as casing to which they are attached.

2.03 GROUT

A. As specified in Section 33 21 13.08, Grouting and Borehole Sealing.

A. Notify Engineer at least 10 days prior to drilling and installation of conductor casing and sanitary seal.

B. Notify Engineer of anticipated delays whenever they become apparent.

C. The Contractor shall contact USA DigAlert at least two (2) working days before any subsurface digging or drilling and obtain a clearance ticket. All USA DigAlert tickets shall be updated as needed to keep them current until all subsurface work has been completed.

D. The Contractor shall hand auger at borehole location to at least 5 feet below ground surface to ensure absence of underground structures prior to drilling.

3.02 BOREHOLE

33 21 13.02 - 3

A. Contractor shall drill a hole no less than the diameter specified in Drawings and shall maintain an open borehole until the conductor casing and grout seal are placed.

3.03 WELDING

A. Weld field joints by qualified welders in accordance with the requirements of AWWA C206 and applicable sections of AWS code.

B. Field joints shall be properly butt-welded during installation.

1. Bevel ends of each casing section to accommodate the welds so outside diameter of weld is equal to or less than outside diameter of casing.

2. Special care shall be exercised to ensure conductor casing is straight and plumb.

3.04 CONDUCTOR CASING INSTALLATION

A. Advance a minimum, 42-inch diameter borehole to at least 53 feet below ground surface, or as directed by Engineer. Maintain an open borehole until the conductor casing and grout seal are placed. As the borehole for the conductor casing is advanced, collect representative formation samples at 5-foot intervals or at each change in lithology, whichever is more frequent.

B. When borehole has been completed, install conductor casing to a depth of at least

50 feet below ground surface.

C. Centralizer Installation:

1. Steel Guides:

a. Each guide shall be 1 foot long and extend 2.5 inches from casing wall.

b. Weld four to conductor casing at 90-degree intervals around casing and at intervals of not more than 40 feet vertically to centralize and hold casing in the proper position until concrete sanitary seal is in place.

c. Place first set of guides 5 feet from bottom of conductor casing.

d. Install a minimum of two sets of guides.

3.05 SANITARY SEAL INSTALLATION

A. Place after conductor casing borehole is advanced and conductor casing is placed in hole.

1. Fill annular space between conductor casing and borehole with grout from bottom of boring to elevation shown on Drawings.

2. Place grout in accordance with Section 33 21 13.08, Grouting and Borehole Sealing.

WATER WELL DRILLING

33 21 13.03 - 1

SECTION 33 21 13.03

1. ASTM International (ASTM): D422, Standard Test Method for

Particle-Size Analysis of Soils.

2. American Petroleum Institute (API):

a. 13A, Specification for Drilling-Fluid Materials.

b. 13B-1, Recommended Practice Standard Procedure for Field Testing

Water- Based Drilling Fluids.

3. International Association of Drilling Contractors (IADC): API-Approved

Official Daily Drilling Report Form.

4. California Department of Water Resources (DWR): California Water Well

Standards, DWR Bulletin 74-81 and California Well Standards, DWR Bulletin 74-90.

5. NSF International (NSF): 61, Drinking Water System Components—Health Effects.

1. Detailed product data for drilling fluids and additives.

2. Drilling mud properties.

3. Drill cutting samples.

1. Drilling fluid specialist qualifications.

2. Detailed description of drilling fluid program including details on mud tanks, pits, and circulation system. Drilling fluid program shall be prepared by a certified drilling fluid specialist provided by the Contactor.

3. Description of drilling equipment and proposed methods.

4. Daily Drilling Log.

5. Water quality analysis test results (if applicable).

6. If applicable, approved chain-of-custody form(s) related to disposing of materials generated during well drilling.

C. Submittals shall be made in accordance with Section 01300, Submittals.

1. Drilling Fluid Specialist: Mud specialist shall be approved by Engineer prior to drilling.

33 21 13.03 - 2

B. Regulatory Requirements:

1. Comply with applicable permits, laws, and regulations in disposing of drilling fluids, drill cuttings, and water generated during drilling and well construction. Permits, laws and regulations shall include, but not be limited to, the following:

a. Federal, state, and local laws, regulations, and ordinances related to disposing of materials generated in constructing wells.

2. Demonstrate compliance with the applicable permits, laws, and regulations with the following:

a. If applicable, approved chain-of-custody form(s) and laboratory data demonstrating compliance with disposal of materials generated during well drilling.

A. Notify Engineer at least 5 working days before drilling begins.

C. Excavation of mud pits will not be allowed unless approved by Engineer.

D. The actual depth of boreholes may change depending on the results of pilot borehole drilling or as directed by the Engineer.

3.02 DRILLING EQUIPMENT

A. Provide reverse circulation rotary drilling equipment and accessories required to complete the well as specified.

3.03 DRILLING FLUIDS

A. Use new materials in the formulation of drilling fluid at each well site. Used drilling fluid materials shall not be reused at subsequent well sites.

B. Properties:

1. Comprised of a polymer-based “mud” or a bentonite “gel”-based mud.

a. “Gel”-based mud shall be a high-yield, 200-mesh sodium bentonite.

b. A bentonite viscosifier only meeting requirements of API 13A will be considered insufficient for applications required in this Project.

2. NSF 61 Certified.

3. Possess characteristics that are required to:

a. Adequately clean drill cuttings off drill bit and bottom of hole.

33 21 13.03 - 3

b. Transport (“float”) cuttings to the surface and remove them from the fluid.

c. Provide borehole stability to prevent caving of the walls as drilling progresses.

d. Control subsurface pressures.

e. Cool drill bit and lubricate drill string.

f. Prevent excessive fluid loss into permeable zones.

g. Permit recovery of representative samples of drill cuttings.

4. Maintain to deposit only a thin, maximum of 1/16 of an inch, easily removable filter cake on face of borehole. Maintain as follows:

a. Weight: Not to exceed 9.2 pounds per gallon.

b. Viscosity: Not to exceed 32 seconds per quart.

c. Sand Content: Not to exceed 5 percent.

d. Total Solids Content: Not to exceed 10 percent.

e. 30-Minute Water Loss: Not to exceed 15 milliliters.

5. Manufacturers and Products:

a. Baroid Industrial Drilling Products; Quik-Gel.

b. CETCO; Super Gel-X.

C. Water:

1. Use potable water, with a minimum chlorine residual of 0.5 mg/L, in formulating drilling fluids whether employed alone or in combination with drilling additives.

2. Soda ash is permitted for use to increase pH of the water used to mix drilling fluids.

D. Additives, if required, shall be approved by Engineer. Organic drilling additives shall not be used.

3.04 CIRCULATION SYSTEM

A. General:

1. System shall minimize recirculation of drill cuttings.

2. Design to facilitate retrieval of representative samples from the discharge with a minimum of recirculation of material.

B. Include settling tanks of adequate size, a sampling trough, a shaker table, and desanding/desilting system.

1. Equip with shaker table and desander/desilter system with a minimum of four cones, capable of handling capacity of system.

a. Desander/desilter system shall have pump capable of supplying a minimum of 40 psi at 80 gallons per minute per cone minimum.

C. Settling Tanks:

1. Vessels used for mixing drilling fluids shall be clean and free of contaminants and extraneous materials prior to their use in drilling operations.

33 21 13.03 - 4

2. Use above ground tanks for mixing, circulation and inclusion of approved additives.

3. Use proper controls to prevent spillage of mud or additives onto ground.

3.05 TEST EQUIPMENT

A. Drilling fluid test equipment and test procedures shall conform to API 13B-1.

B. Equipment for measuring fluid properties shall be made immediately available at drill site.

C. Totco drift indicator, or approved equal.

3.06 BOREHOLE DRILLING

A. Following installation and sealing of the Conductor Casing per Section 33.21.13.02, Conductor Casing and Sanitary Seal, drill borehole(s) by reverse circulation rotary method.

B. Drill boreholes to dimensions and depth as specified in the Drawings. The actual depth may change depending on the results of pilot borehole drilling or as directed by the Engineer.

1. Drill boreholes sufficiently straight and plumb to permit installation of casing and screen centered in the borehole with the centralizers installed.

C. Drilling Fluids and Additives:

1. Check drilling fluid properties, including fluid weight, marsh funnel viscosity, water loss, additions of water, sand content, and total solids content, and filter cake thickness, at a minimum of:

a. Every 100 feet of depth drilled.

b. Every 12 hours of circulation when not drilling.

c. As directed by Engineer.

2. Maintenance:

a. Maintain complete control over drilling fluid characteristics during operation of well construction.

b. If proper control of drilling fluid is not maintained, retain or employ an experienced, qualified mud Engineer onsite to supervise and maintain drilling fluid characteristics, at Contractor’s expense.

3. Determine and maintain the quantities and type of commercial drilling mud necessary for the Work, to secure and store those materials at Site, and use them in accordance with accepted practice compliance with water well drilling operations.

D. Use of additional bentonite, clay, mud, or other foreign matter that has a tendency to build a mud cake on the walls of the hole and clog or seal up water-bearing stratum will not be permitted without prior approval of Engineer.

3.07 PILOT HOLE DRILLING AND SAMPLING

33 21 13.03 - 5

A. Drill 17.5-inch (18-inch nominal) diameter boreholes to total depths as indicated in the Drawing or as directed by the Engineer. Pilot hole diameters greater than specified are not authorized and no payment will be made for pilot hole drilling if this drill bit size is exceeded.

B. Engineer will have representative onsite during drilling to determine exact total depth of each pilot hole based on cuttings.

C. Rate of penetration of pilot hole shall be limited to 20 feet per hour so Contractor can…