A-6.2 Project Specifications.pdf

SPECIAL PROJECT SPECIFICATIONS Page 1

INDEX – FC-High Bridge CG and Battle Creek CG Well Repair and Maintenance

SPECIAL PROJECT SPECIFICATIONS

DIVISION 1 – GENERAL REQUIREMENTS

SECTION 01 22 00 – UNIT PRICES

SECTION 01 64 00 – PRODUCT HANDLING

SECTION 01 71 13 – MOBILIZATION

DIVISION 31 – EARTHWORK

SECTION 31 11 00 – SPECIAL CLEARING AND GRUBBING

DIVISION 33 – UTILITIES

SECTION 33 21 00 – WATER SUPPLY WELLS

SPECIAL PROJECT SPECIFICATIONS Page 2

SPECIAL PROJECT SPECIFICATIONS

DIVISION 1 - GENERAL REQUIREMENTS

SECTION 01 22 00 – UNIT PRICES

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT for accepted contract work will be made only for and under those pay items included in the schedule of items. All other work and materials will be considered incidental to and included in the payment of the pay items in the Schedule of Items. Payment will be for all labor, equipment, supervision, operating supplies, materials, and incidentals necessary to complete the work as specified.

1. Units of Measurement: Payment will be by units defined and determined according to U.S. standard measure and by the following.

• Lump Sum (LS) The quantities that denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job.

• Linear Foot (LF) As applicable, measure work along its length from end to end;

parallel to the base or foundation; along the top; along the front face; or along the invert. Do not measure overlaps.

• Each (EA) One entire unit. Measure the actual number of units completed and accepted.

2. Methods of Measurement: One of the following methods of measurement for determining payment is designated on the Schedule of Items for each Pay Item.

• Actual Quantities. (AQ) these quantities are determined from measurements of completed work.

• Lump Sum Quantities. (LSQ) these quantities denote one complete unit of work as required by or described in the contract, including necessary material, equipment, and labor to complete the job.

END OF SECTION 01 22 00

SPECIAL PROJECT SPECIFICATIONS Page 3

SECTION 01 64 00 – PRODUCT HANDLING

PART 1 GENERAL

1.01 SCOPE: Work includes protecting products scheduled for work use by means including, but not necessarily limited to, those described in this section.

Quality Assurance: Include within the CONTRACTOR's quality assurance program such procedures as are required to assure full protection of work and materials.

Testing Laboratory Recommendations: Except as otherwise approved by the CONTRACTING OFFICER, determine, and comply with testing Laboratory's recommendations on product handling, storage, and protection.

Packaging: Maintain packaged materials with seal(s) unbroken and label(s) intact until time of use. At no cost to the Government, promptly remove any damaged material not meeting the specified requirements. The CONTRACTING OFFICER will reject as non-complying such material and products that do not satisfactorily indicate grade, quality, and other pertinent information.

Protection: Protect finished surfaces over which equipment and materials are handled.

Maintain and protect finished surfaces until accepted by the CONTRACTING OFFICER.

Repairs and Replacements:

1 In event of damage, promptly replace and/or repair the item as directed and approved by the CONTRACTING OFFICER at no additional cost to the Government.

2 Additional time required to secure replacements and/or make repairs will not be considered by the CONTRACTING OFFICER as justification for an extension in the Contract Time of Completion.

1.02 MEASUREMENT AND PAYMENT: No separate measurement or payment will be made for work specified in this section.

END OF SECTION 01 64 00

SPECIAL PROJECT SPECIFICATIONS Page 4

SECTION 01 71 13 – MOBILIZATION

PART 1 GENERAL

1.01 SCOPE: Mobilization work in this section shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to all project locations and performing work necessary before beginning work at the project site.

Mobilization work also includes obtaining permits, insurance, and bonds and demobilization.

1.02 MEASUREMENT AND PAYMENT: The accepted quantities will be paid at the contract price per unit of measurement listed in the Schedule of Items. See Measurement and Payment SECTION 01 22 00.

PART 2 PRODUCTS

Not Applicable

PART 3 EXECUTION

3.01 MOBILIZATION PROGRESS PAYMENTS will be made as follows:

1. Bond premiums will be reimbursed according to FAR Clause 52.232-5. Payments under fixed-price constuction contracts, after receipt of the evidence of payment.

2. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization (less bonding costs), or five percent of the original contract amount, whichever is less, will be paid in addition to the bonding costs.

3. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization or ten percent of the original contract amount, whichever is less, will be paid.

4. Upon completion of all project work, any unpaid amount for mobilization will be paid. Payment total shall not exceed the original contract amount for this item.

3.02 REMOBILIZATION will be paid 100 percent if option is awarded and CONTRACTOR moves personnel, equipment, supplies, and incientals to alternate drill site.

END OF SECTION 01 71 13

SPECIAL PROJECT SPECIFICATIONS Page 5

DIVISION 31 – EARTHWORK

SECTION 31 11 00 – SPECIAL CLEARING AND GRUBBING

PART 1 GENERAL

1.01 SCOPE: This work consists of clearing and grubbing where all trees and vegetation are removed within a 10-ft radius from around wellhead.

1.02 Special Clearing and Grubbing. Clear, grub, and dispose of trees, snags, brush, downed timber, stumps, roots, buried logs, moss, turf, grass, and other vegetation designated to be removed.

MEASUREMENT AND PAYMENT: – See SECTION 01 22 00

1. VERTICAL WELL CLEARING AND GRUBBING (LSQ)

A. Measurement – Lump Sum Quantity (LSQ) remove all trees and vegetation within a 10-ft radius from around wellhead.

B. Payment – Lump Sum (LS) payment shall include all materials, equipment, erosion control, and labor necessary to complete work.

END OF SECTION 31 11 00

SPECIAL PROJECT SPECIFICATIONS Page 6

DIVISION 33 – UTILITIES

SECTION 33 21 00 - WATER SUPPLY WELLS

PART 1 GENERAL

SCOPE: This work shall consist of furnishing all labor, equipment, materials, and supervision necessary to investigate the existing well conditions and to improve the drinking water quality from two vertical wells at High Bridge Campground (HBCG), and to improve water quality operations and maintenance of one vertical well at Battle Creek Campground (BCCG), and may include a well destruction if directed in writing by CONTRACTING OFFICER.

1.01 LICENSED CONTRACTOR: Licensed with California C57 Well Drilling, C36 Plumbing, or C61/D21 Machinery and Pumps certification license, shall perform work.

1.02 CODES AND STANDARDS: Contract work shall be in accordance with all applicable federal, state, and county regulation and code requirements specified in the following:

• American Water Works Association (AWWA) Standard A100-06 for Water Wells

• Environmental Protection Agency Manual of Water Well Construction Practices

• National Sanitation Foundation (NSF)

• California Department of Water Resources (DWR) California Well Standards

Bulletin 74-81 and 74-90

• California Drinking Water Standards – Title 17 and Title 22

• CA-NV AWWA Best Management Practices (BMP) Manual for drinking water system releases available at:

http://ca-nv-awwa.org/CANV/downloads/Armando/2014BMPManual(Final).pdf.

1.03 NOTIFICATION: The CONTRACTOR shall notify the Contracting Officer’s Representative Seventy-two (72) hours in advance when starting work on site.

1.04 MEASUREMENT AND PAYMENT – See SECTION 01 22 00.

1. VERTICAL WELL REPAIR AND MAINTENANCE (LSQ)

A. Measurement – Lump Sum Quantity (LSQ) includes erosion controls, well rehabilitation, government sampling, well capacity test; and hand pump component replacements.

B. Payment – Lump Sum (LS) payment shall include all materials, equipment, erosion control, and labor necessary to complete work.

2. WATER METER (EA)

A. Measurement – shall be per Each (EA) water meter installed per manufactures recommendations.

B. Payment – Each (EA) payment shall include all materials, equipment, and labor necessary to complete work.

http://ca-nv-awwa.org/CANV/downloads/Armando/2014BMPManual(Final).pdf

SPECIAL PROJECT SPECIFICATIONS Page 7

3. WELL DESTRUCTION (OPTIONAL)

A. Measurement - Actual Quantity (AQ) linear foot measurement of hole depth destroyed.

B. Payment - Linear foot (LF) payment of hole abandoned. Payment shall be made only when the CONTRACTING OFFICER authorizes the CONTRACTOR - in writing - to destroy the well. Payment when authorized shall include all materials, equipment, and labor required to abandon the well.

PART 2 PRODUCTS

2.01 All products shall be undamaged, new, of size, material, and type called for in these specifications approved for use with potable water (NSF/ANSI 61, lead free, and made in USA). CONTRACTING OFFICER shall review and approve of all products prior to use and/or installation.

2.02 HAULED WATER: CONTRACTOR will furnish water from a source that complies with public water system standards and contains a free residual chlorine level between 0.2 to 1ppm. The CONTRACTOR will identify the potable water source in submittals.

2.03 WEED FREE STRAW BALES: CONTRACTOR will furnish weed-free certification in submittals. Approval required prior to delivering to site locations.

2.04 HAND PUMP: Monitor Baker 11 HD Hand pump, flange, pump rod, coupling, rod couplings, hand pump diverter, pitless adapter, stainless steel rod, drop pipe, check valve, cylinder, and submersible pump. https://www.bakerwatersystems.com/products/water-well-accessories/hand_pumps/hand_pumps

2.05 DROP PIPE: Shall be Schedule 80, 1-1/4” I.D. threaded PVC drop pipe with at least one drop pipe check valve per well.

2.06 DISINFECTING AGENT: Refer to AWWA C654 standard “Disinfection of Wells”.

2.07 WATER WELLS: Refer to AWWA A100-6 standard “Water Wells”.

2.08 WATER METER: T-10 Neptune 1-1/2” size potable water meter with nutating disk, flanged end, US gallons unit of measure, direct reading register with bronze box and cover.

PART 3 EXECUTION

3.01 EROSION CONTROLS – Weed-free straw bales shall be in place prior to the start of work to prevent well materials from entering any drainage or watercourse. CONTRACTOR shall then remove erosion controls prior to demobilization.

3.02 WELL REHABILITATION – Contractor shall remove exising hand pump; Pump/clean out well with approved hauled water; and Supershock well and circulate well water with adeqauately sized sumbersible pump. Use NSF approved chlorine and obtain a 1000 parts per million solution. Circulate super chlorinated well water for a minimum of 12 hours and maximum of 24 hours. After shock treatment the pH of the super-chlorinated water shall be https://www.bakerwatersystems.com/products/water-well-accessories/hand_pumps/hand_pumps https://www.bakerwatersystems.com/products/water-well-accessories/hand_pumps/hand_pumps

SPECIAL PROJECT SPECIFICATIONS Page 8 neutralized/dechlorinated with sodium thiosulfate before releasing onto ground surface.

3.03 SAMPLING – Once all traces of disinfection have been removed from the well, the CONTRACTOR shall continue to pump well water to the surface at a reduced rate to allow the Government COR or Inspector to take representative water samples.

3.04 WELL CAPACITY TEST – Measure and record static water level and depth of well, prior to well capacity test. Begin 8-hour well capacity test with a constant rate test and pump well continuously starting at maximum yield or at a pumping rate agreed to by Contracting Officer’s Representative (COR). Measure drawdown and recovery as described:

1. Measure and record well water drawdown levels and pump discharge rate:

A. Every minute from 0 to 10 minutes B. Every 5 minutes from 10 to 45 minutes C. Every 15 minutes from 45 to 90 minutes D. Every 30 minutes from 90 to 240 minutes or until the water drawdown level is constant for at least the last two remaining measurements or until the COR terminates pumping.

2. Measure and record well water recovery levels according to drawdown schedule.

3. Contractor shall provide a written record of well performance data (static and pumping water levels and drawdown/recovery data) to CONTRACTING OFFICER.

3.05 HAND PUMP REPLACEMENT – CONTRACTOR will install all new hand pump components located within the well casing/below grade. Components include pump rod, coupling, rod couplings, hand pump diverter, pitless adapter, stainless steel rod, drop pipe, check valve, cylinder, and submersible pump. CONTRACTOR shall reinstall government repaired hand pump and verify proper hand pump performance.

https://www.bakerwatersystems.com/uploads/files/products/category_pdfs/Hand_Pump_11 HDA_12_HDA_Installation.pdf

3.06 WATER METER REPLACEMENT – Install per manufacturer’s recommendations.

3.07 WELL DESTRUCTION – CONTRACTING OFFICER shall authorize the CONTRACTOR IN WRITING to destroy well if well has proven to be unacceptable.

Contractor shall be responsible for obtaining a County well destruction permit if required.

All casing and concrete collar/pad should be removed. If casing cannot be removed, then the top three feet below ground surface shall be cut off and disposed. Since each well is unique, the Contractor shall use well sealing materials based on the construction of the well, the pH of the water and its effect on sealing materials, and the nature of the penetrated formations. Provide a continuous seal from the bottom of well to within three feet (3) of ground surface. Sealing material placed in the well shall flow over to form a cap. The CONTRACTOR must verify that the volume of the material placed in the well is at least equal to the volume of the hole. The CONTRACTOR will report results to the COR. After well seal has been approved by the CONTRACTING OFFICER, existing native soil fill material shall be mounded one foot higher than the existing ground surface to allow for settlement. Grade fill material back to existing ground surface with a 1/2:1 slope.

END OF SECTION 33 21 00

https://www.bakerwatersystems.com/uploads/files/products/category_pdfs/Hand_Pump_11HDA_12_HDA_Installation.pdf https://www.bakerwatersystems.com/uploads/files/products/category_pdfs/Hand_Pump_11HDA_12_HDA_Installation.pdf