J-3 and J-4 Meta Lake Project Specifications and Wage Determination.pdf

Meta Lake Well Deepening 1 Measurement and Payment

Section 012200

SECTION 012200

MEASUREMENT AND PAYMENT

1. PART 1 - GENERAL

1.01 DESCRIPTION

A. This Section specifies measurement and payment for the work of this contract.

1.02 GENERAL

A. The basis for measurement and payment for all work performed under this contract shall be in accordance with the Schedule of Items (Section B). In the event of a conflict Section B shall prevail over this Section (012200).

B. Payment shall be made at the contract prices listed in the Schedule of Items.

1.03 INCIDENTAL WORK

A. Work to be performed which is not specifically called out to be measured and/or paid for shall be incidental to other related items listed in the Schedule of Items.

There will be no separate measurement and payment for any work not specifically listed in the Schedule of Items.

B. The summation of all bid items under the Schedule of Items shall equal all work required by the Drawings, Specifications and incidentals to complete a functioning job regardless of whether all the work needed is described in the collective bid items.

1.04 PRICES FOR THE COMPLETE ITEM

A. The prices listed in the Schedule of Items shall be payment in full for all labor, tools, equipment, materials, etc., which are required to construct respective bid items according to the Contract Documents, including all work and materials for a fully functioning item.

1.05 UNIT PRICES

A. Bid items calling for unit prices show estimated quantities of work to be performed.

These quantities, although shown with as much accuracy as possible, are approximate only and are for bidding purposes only. Payment to the Contractor shall be made on the quantity of work actually performed by the Contractor. Also see variation in quantities FAR clause elsewhere in this contract.

1.06 PARTIAL PAYMENT ON UNIT AND LUMP SUM ITEMS

A. Payment for unit bid items and lump sum bid items only partially completed at the end of monthly invoice periods shall be based on a percentage of work completed as determined by the Contracting Officer. The actual payment for each bid item will reflect the actual amount of work completed.

Measurement for Lump Sum items is by the Job as you have it. But, Measurement for non lump sum items is not of the job. It is instead by the actual quantity such as

“actual quantity of linear feet well casing installed”.

1.07 BID ITEM 1 – MOBILIZATION

A. Measurement

Meta Lake Well Deepening 2 Measurement and Payment

1. When the partial payment estimate of the amount earned to date, not including the amount earned for mobilization, is 5 percent or more of the original total contract amount, 50 percent of the contract bid price for mobilization or 5 percent of the original total contract amount, whichever is the lesser, will be included in the estimate for payment on mobilization.

2. When the partial payment estimate of the amount earned to date, not including the amount earned for mobilization, is 10 percent or more of the original total contract amount, 100 percent of the contract bid price for mobilization or 10 percent of the original total contract amount, whichever is the lesser, will be included in the estimate for payment on mobilization.

3. Upon completion of all the work on the project and acceptance by the

Government, payment of 100 percent of the contract bid price for mobilization will be included in the estimate for payment on mobilization.

B. Payment

1. Payment will be considered full compensation for all work preparatory to the start of work including premiums paid by the Contractor to obtain bonds and operations necessary for the movement of personnel, equipment, supplies and incidentals to the project site and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items at the project site.

2. Payment will be made under:

Pay Item Description Pay Unit

01 Mobilization Lump Sum

1.08 BID ITEM 2 – SITE CLEARING AND GRUBBING

A. Measurement

1. Complete job of clearing and grubbing; relocating eruption logs, stumps, and other blast artifacts, and protecting paved areas, curbing, sensitive soils, and vegetative ground cover within work area.

B. Payment

1. Complete job of clearing and grubbing; relocating eruption logs, stumps, and other blast artifacts, and protecting paved areas, curbing, sensitive soils, and vegetative ground cover within work area.

2. Payment will be made under:

Pay Item Description Pay Unit

02 Site Clearing and Grubbing Lump Sum

1.09 BID ITEM 3 – REMOVE HAND PUMP

A. Measurement

1. Complete job of removing existing hand pump, pump rod, drop pipe, and pump cylinder.

B. Payment

Meta Lake Well Deepening 3 Measurement and Payment

1. Complete job of removing existing hand pump, pump rod, drop pipe, and pump cylinder, including all labor and materials.

2. Payment will be made under:

Pay Item Description Pay Unit

03 Remove Hand Pump Lump Sum

1.10 BID ITEM 4 – REMOVE EXISTING STEEL WELL CASING, CEMENT SEAL, AND

LINER

A. Measurement

1. Actual quantity of linear feet for removal of existing steel well casing, cement seal, and liner to a depth of 24 feet below ground surface.

B. Payment

1. Actual quantity of linear feet for removal of the existing steel well casing, cement seal, and liner to a depth of 24 feet, including all labor and materials.

2. Payment will be made under:

Pay Item Description Pay Unit

04 Remove existing steel well Linear Foot casing, cement seal, and liner

1.11 BID ITEM 5 – DRILL MINIMUM 10” BOREHOLE FROM 24 FEET TO MINIMUM

50 FEET

A. Measurement

1. Actual quantity of linear feet drilling 10” minimum diameter borehole from 24 feet to minimum depth of 50 feet below ground surface.

B. Payment

1. Actual quantity of linear feet drilling through collapsed material above 24 feet, installation and removal of temporary casing, and all other work necessary to drill a 10” minimum diameter borehole from 24 feet to minimum depth of 50 feet below ground surface.

2. Payment will be made under:

Pay Item Description Pay Unit

05 Drill minimum 10” borehole Linear Foot from 24 feet to minimum 50 feet

1.12 BID ITEM 6 – DRIVE SHOES

A. Measurement

1. Actual quantity of drive shoes used to remove existing well casing and seal, and install new well casing.

B. Payment

1. Actual quantity of drive shoes used to remove existing well casing and seal, and install new well casing.

2. Payment will be made under:

Meta Lake Well Deepening 4 Measurement and Payment

Pay Item Description Pay Unit

06 Drive Shoes Each

1.13 BID ITEM 7 – ANNULAR CEMENT GROUT SEAL

A. Measurement

1. Actual quantity of linear feet of borehole sealed with cement, including all material used in the surface seal except permanent casing from ground surface to a minimum of 50 feet below ground surface.

B. Payment

1. Actual quantity of linear feet of borehole sealed with cement, including all material used in the surface seal except permanent casing from ground surface to a minimum of 50 feet below ground surface.

2. Payment will be made under:

Pay Item Description Pay Unit

07 Annular Cement Linear Foot

Grout Seal

1.14 BID ITEM 8 – DRILLING TO ACCOMMODATE WELL CASING AND LINER

A. Measurement

1. Actual quantity of linear feet of 6 inch diameter borehole to accommodate well casing and liner measured from bottom of surface seal to the bottom of the hole. Drill hole must penetrate a potable water-bearing stratum.

B. Payment

1. Actual quantity of linear feet of 6 inch diameter borehole to accommodate well casing and liner measured from bottom of surface seal to the bottom of the hole. Drill hole must penetrate a potable water-bearing stratum.

2. Payment will be made under:

Pay Item Description Pay Unit

08 Drilling to accommodate Linear Foot well casing and liner

1.15 BID ITEM 9 – CASING-IN-PLACE 6-INCH

A. Measurement

1. Actual quantity of linear feet of permanent 6-inch casing furnished and installed.

B. Payment

1. Actual quantity of linear feet of permanent 6-inch casing furnished and installed.

2. Payment will be made under:

09 Casing-In-Place 6-inch Linear Foot

Meta Lake Well Deepening 5 Measurement and Payment

1.16 BID ITEM 10 – CASING LINER WITH PERFORATIONS

A. Measurement

1. Actual quantity of linear feet of permanent 4-½ inch PVC well casing liner furnished and installed, includes liner perforations along the potable water-bearing stratum.

B. Payment

1. Actual quantity of linear feet of permanent 4-½ inch PVC well casing liner furnished and installed, includes liner perforations along the potable water-bearing stratum.

2. Payment will be made under:

Pay Item Description Pay Unit

10 Casing Liner with Linear Foot

Perforations

1.17 BID ITEM 11 –WELL DEVELOPMENT

A. Measurement

1. Actual quantity of hours required to develop new well.

B. Payment

1. Actual quantity of hours required to develop new well, including all labor, equipment, and materials.

2. Payment will be made under:

Pay Item Description Pay Unit

11 Well Development Hour

1.18 BID ITEM 12 – 4-HOUR PUMP TEST

A. Measurement

1. Actual quantity of hours required to perform a 4-hour pump test on reconstructed well, includes labor, equipment, and materials.

B. Payment

1. Actual quantity of hours required to perform a 4-hour pump test on reconstructed well, includes labor, equipment, and materials.

2. Payment will be made under:

Pay Item Description Pay Unit

12 4-Hour Pump Test Hour

1.19 BID ITEM 13 – REMOVE EXISTING CONCRETE SLAB

A. Measurement

1. Complete job of removing existing concrete slab around well.

B. Payment

1. Complete job of removing existing concrete slab around well, including all labor and materials.

2. Payment will be made under:

Meta Lake Well Deepening 6 Measurement and Payment

13 Remove existing Lump Sum

Concrete Slab

1.20 BID ITEM 14 – INSTALL CONCRETE SLAB

A. Measurement

1. Complete job of installing concrete slab around well.

B. Payment

1. Complete job of installing concrete slab around well, including all labor and materials.

2. Payment will be made under:

Pay Item Description Pay Unit

14 Install Concrete Slab Lump Sum

1.21 BID ITEM 15 – FURNISH AND INSTALL HAND PUMP

A. Measurement

1. Complete job of furnishing and installing hand pump.

B. Payment

1. Complete job of furnishing and installing hand pump, including all labor and materials.

2. Payment will be made under:

Pay Item Description Pay Unit

15 Furnish and install hand pump Lump Sum

BID ITEM 16 – WATER QUALITY TESTING

A. Measurement

1. Complete job of collecting water quality tests for inorganic chemicals, nitrate, and coliform, submitting samples to state-certified laboratory for chemical analysis, and supplying test results to CO.

B. Payment

1. Complete job of collecting water quality tests for inorganic chemicals, nitrate, and coliform, submitting samples to state-certified laboratory for chemical analysis, and supplying test results to CO.

2. Payment will be made under:

Pay Item Description Pay Unit

16 Water Quality Testing Lump Sum

BID ITEM 17 – WELL ABANDONMENT

C. Measurement

1. Complete job of abandoning well in accordance with Washington State regulations.

D. Payment

Meta Lake Well Deepening 7 Measurement and Payment

1. Complete job of abandoning well in accordance with Washington State regulations, including all labor and materials.

2. Payment will be made under:

17 Well Abandonment Each

2. PART 2 – PRODUCTS (NOT USED)

3. PART 3 – EXECUTION (NOT USED)

END OF SECTION

4.

Meta Lake Well Deepening 8 Concrete Forms

Section 031113

SECTION 031113

CONCRETE FORMS AND ACCESSORIES

PART 1– GENERAL

1.01 SUMMARY

A. This section specifies construction of concrete forms.

PART 2– PRODUCTS

2.01 Materials

A. Plywood: B-B Plyform.

B. Steel.

1. Prefabricated.

C. Lumber.

1. Standard grade.

D. Form Release Agent.

1. Colorless mineral oil which will not stain concrete, or absorb moisture, or impair natural bonding or color characteristics of coating intended for use on concrete.

2. Diesel or oil based release agents shall not be used.

PART 3– EXECUTION

3.01 CONSTRUCTION

A. Construct forms to prevent leakage of mortar, and any shifting or deformation during the placement and finishing of concrete.

B. Wet forms to allow removal without damaging the concrete per manufacturer’s instructions.

C. Notify Contracting Officer at least one working day in advance of concrete pour that the forms are ready for inspection

3.02 CLEANING

A. Remove all sawdust, shavings, and other debris from within the forms.

B. Form Removal.

1. Do not disturb forms until concrete has gained enough strength to carry its own weight and such construction loads as may occur.

2. Loosen forms carefully. Do not wedge pry bars, hammers, or tools against finish concrete surfaces scheduled for exposure to view.

Meta Lake Well Deepening 9 Concrete Reinforcement

Section 032000

SECTION 032000

CONCRETE REINFORCEMENT

PART 1– GENERAL

1.01 SUMMARY

A. This section specifies reinforcing bars.

1.02 REFERENCES

A. ACI 301 - Structural Concrete for Buildings.

B. ACI 318 - Building Code Requirements For Reinforced Concrete.

C. ACI SP-66 - American Concrete Institute - Detailing Manual.

PART 2– PRODUCTS

2.01 MATERIALS

A. Reinforcement Steel.

1. Bar reinforcement - ASTM A615 Grade 60.

B. ACCESSORY MATERIALS

1. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for strength and support of reinforcement during concrete placement

PART 3– EXECUTION

3.01 INSTALLATION

A. Secure reinforcement against displacement caused by construction loads or placing of concrete. Tie all bar intersections with annealed iron wire of not less than 16 gauge.

B. Field bending and cutting will be permitted if performed in accordance with the ACI code.

C. Keep reinforcement free of dirt, oil, paint, grease, mill scale, and loose or thick rust.

D. Place, support and secure reinforcement against displacement. Do not deviate from required position.

E. Accommodate placement of formed openings.

F. Conform to ACI 318 for concrete cover over reinforcement.

3.02 INSPECTION

A. Obtain Contracting Officer inspection and approval of reinforcing bar placement at least one working day prior to placing concrete.

Meta Lake Well Deepening 10 Cast-in-Place Concrete

Section 033000

SECTION 033000

CAST-IN-PLACE CONCRETE

PART 1– GENERAL

1.01 SUMMARY

A. This section specifies cast-in-place concrete including concrete materials, mix design, placement procedures, curing, and finishes.

1.02 REFERENCES

A. ACI 301 - Structural Concrete for Buildings.

B. ACI 304 - Recommended Practice for Measuring, Mixing, Transporting and Placing

Concrete.

C. ACI 308 - Standard Practice for Curing Concrete.

D. ACI 318 - Building Code Requirements for Reinforced Concrete.

E. ASTM C94 - Ready-Mixed Concrete.

F. ASTM C150 - Portland Cement.

G. ASTM C260 - Air Entraining Admixtures for Concrete.

1.03 QUALITY ASSURANCE

A. Perform work in accordance with ACI 301.

B. Acquire cement and aggregate from same source for all work.

C. Use only 1 brand of cement and admixtures unless otherwise approved in writing by the CO.

1.04 SUBMITTALS

A. Provide the CO with delivery ticket in accordance with ASTM C94 for each load of concrete.

B. Furnish the following information to the CO for approval:

1. Brand name of the admixture.

2. Amount of admixture, per cubic yard of concrete to be used.

3. Reason for requesting the use of the admixture.

C. If curing compound is used, submit manufacturer’s application recommendation.

1.05 QUALIFICATIONS

A. Concrete slab shall be installed by personnel with a minimum 5 years of experience in the installation of concrete slabs.

PART 2– PRODUCTS

2.01 MATERIALS

A. Cement.

1. Type I or Type II Portland Cement: ASTM C150. Use only 1 brand of cement.

2. Type III Portland Cement: ASTM C150. For use at the Contractor’s option under Cold Weather Concreting and Curing and Proportioning Concrete for

Cold Weather.

Meta Lake Well Deepening 11 Cast-in-Place Concrete

B. Aggregate.

1. ASTM C33, “Specifications for Concrete Aggregate,” Size Number 57.

C. Admixtures for Concrete.

1. Air-entraining admixtures - ASTM C260.

2. Water-reducing retarding admixtures - ASTM C494, Type D. Water-reducing, retarding admixtures may be used when approved by the CO. The time limit between batching and placing concrete may be extended up to an additional 2 hours. Use a quantity of admixture within the range of the manufacturer’s recommendation. The amount of water may be reduced;

other proportions shall remain the same.

D. Water.

1. Clear, clean, and suitable for domestic consumption.

2.02 CONCRETE MIX

A. Schedule - Concrete Types and Finishes.

1. Proportion concrete in accordance with ACI 318. The strength of concrete

(f'c), air entrainment, slump, and finish shall meet the requirements below

a. Non-Structural Concrete, Walks and Slabs.

Unit Requirement

Compressive Strength (f'c) (28 day) 3,000 psi

Air Entrained 4-6%

Slump (±1 inch) 5”

B. Proportioning Concrete for Cold Weather.

1. For concrete placed under “Cold Weather Concreting and Curing” condition, the Contractor may elect to alter the required proportions in one of the following ways:

a. Type III Portland Cement.

1) Type III Portland Cement may be substituted in equal quantities for Type I or II Portland Cement.

b. Additional Cement.

1) An additional sack per cubic yard of Type I or Type II Portland

Cement may be added.

C. Cold Weather Concrete.

1. Provide concrete having a minimum temperature of 50 degrees F and a maximum temperature of 90 degrees F at the time of placing. The temperature of the mixing water shall not exceed 140 degrees F. If aggregates are heated, heat uniformly with steam or water coil. Aggregate temperature shall not exceed 95 degrees F. Aggregate water mix temperature shall not exceed 80 degrees F. Do not use materials containing frost or icy lumps.

PART 3– EXECUTION

3.01 MIXING

A. Plant Batched and Transit Mixed.

Meta Lake Well Deepening 12 Cast-in-Place Concrete

1. Batch at a central plant and mix enroute to the project in transit mix trucks in compliance with ASTM C94. (ASTM C94 Sections 3 and 17 shall not apply to this contract).

2. Place truck or transit mixed concrete within a maximum of 1-1/2 hours after introduction of cement into the batch unless CO approves retardant additive to extend setting life of concrete. In hot weather or due to other contributing factors, a time less than 1-1/2 hours may be required by the CO.

3. Time interval between placement of batches not to exceed 30 minutes.

B. Plant Batched and Project Mixed.

1. Batch aggregates at a central plant and add water, cement, and admixture at the project.

2. Meet all requirements specified for transit mix.

3. Add cement, water, and admixture by accurate measurement, using measuring devices approved by the CO.

C. Project Batched and Project Mixed

1. Project Batched and Project Mixed will not be allowed.

D. Hand Mixed.

1. Hand mixing will not be allowed.

3.02 MIX ADJUSTMENTS

A. After the mix period, water may be added once for purposes of acquiring minimum slump, provided specified water-cement ratio is not exceeded. When water is added, an additional 20 revolutions at mixing speed is required. .

B. Air-entraining admixtures will not be allowed to be added after the start of mixing for purposes of acquiring minimum air content.

3.03 CONCRETE PLACEMENT

A. Notify CO a minimum of one working day prior to placement.

B. Center concrete slab on well casing and construct to lines and elevations shown on the drawings.

C. Cut asphalt vertically along walkway edge at joint where walkway meets slab.

Place slab on level compacted surface.

D. Lightly dampen compacted subbase before placement.

E. Convey concrete from a mixer to the forms as near final position as practical in a manner which will prevent segregation or loss of materials.

F. Place concrete slab in one continuous operation.

G. Place in layers to avoid segregation and begin placing at corners of structure.

H. Immediately after placing, thoroughly consolidate concrete with mechanical vibrators.

I. Do not drop concrete freely from higher than 4 feet above the surface of concrete being poured.

J. Do not place concrete in water or allow water to rise over freshly placed concrete until a set is sufficient to prevent damage.

Meta Lake Well Deepening 13 Cast-in-Place Concrete

K. After concrete placement and form removal, backfill edges of slab with previously excavated material, level and compact surplus material to blend in with adjacent contours. Slope away from well slab in all directions. .

3.04 PROTECTION FROM RAINFALL

A. Protect flat work during periods of precipitation with adequate waterproof covering.

Support covering so that finishing may be performed and initial set obtained without damage. Dragging of tarpaulins or other covering across unset concrete will not be permitted.

3.05 CURING

A. Commence curing and protection of concrete immediately after placing. Cure Type

I and Type II Portland Cement 7 days continuously and Type III Portland Cement 3 days continuously by one of the following methods:

1. Water Curing.

a. Keep all surfaces of concrete and forms left on concrete wet. Shade concrete from sun with covering material or with sand or sawdust on slab, except during periods of required finishing. Use of sprinklers or flooding is permitted on slabs.

2. Membrane Curing.

a. A liquid membrane-forming material may be used for curing at the

Contractor’s option. Complete required surface finish prior to application of curing compound; use water curing during finishing period. Spray material to surface at the rate of 1 gallon per 300 square feet in 2 applications, resulting in a coverage of 1 gallon per 150 square feet. Apply first coat immediately after acceptance of finish. Thoroughly wet concrete with water and apply material just as surface film of water disappears.

Apply second coat after first application has set. Recoat any rupture to the membrane seal immediately or use water cure method.

3. Moisture-Retaining-cover Curing:

a. Cover concrete surfaces with moisture-retaining cover for curing concrete, placed in widest practicable width, with sides and ends lapped at least 12 inches, and sealed by waterproof tape or adhesive. Immediately repair any holes or tears during curing period using cover material and waterproof tape.

3.06 HOT WEATHER CONCRETING AND CURING

A. When hot weather conditions exist that would seriously impair quality and strength of concrete, place concrete in compliance with ACI 305 and as herein specified.

B. Cool ingredients before mixing to maintain concrete temperature at time of placement below 90 F (32 C).

C. Mixing water may be chilled, or chopped ice may be used to control temperature provided water equivalent of ice is calculated to total amount of mixing water and ice particles are fully melted prior to adding to mix.

3.07 COLD WEATHER CONCRETING AND CURING

A. When descending air temperature at the project drops below 40 degrees F the

Contractor may at their option, continue concreting under conditions stated below.

Meta Lake Well Deepening 14 Cast-in-Place Concrete

Normal concreting operations may resume when the temperature at the site exceeds 40 degrees F.

B. Provide cover and heating equipment sufficient to maintain the temperature of the concrete at not less than 50 degrees F for a period of 3 days for Type I and Type II cement. Maintain the temperature at not less than 50 degrees F for a period of 2 days for Type III cement or when one additional sack of Type I or Type II cement is added.

C. Provide additional protection to prevent the concrete temperature from dropping below 40 degrees F in the 24-hour period following the required protection period.

D. Keep all surfaces of concrete and any forms remaining on concrete wet. Remove and replace any concrete injured by frost and freezing as directed by the CO.

3.08 FIELD QUALITY CONTROL

A. The following concrete tests will be taken by the Contractor:

1. Slump.

a. Testing will be in accordance with ASTM C143. If the slump is greater than the specified range, the concrete will be rejected.

B. The Government may elect to perform additional tests on the concrete. These tests will be performed by and at the expense of the Government. Concrete for the samples shall be provided by the Contractor at no additional cost to the Government.

If testing falls outside the specified limits, a check test shall be made immediately on another portion of the same load. In the event of a second failure, the concrete shall be considered to have failed the requirements of the specification.

3.09 CONCRETE FINISHING

A. After striking-off and consolidating concrete, smooth surface with screeding and floating.

B. After completion of floating and troweling when excess moisture or surface sheen has disappeared, complete surface finishing, as follows

C. On inclined slab surfaces, provide a coarse, non-slip finish by scoring surface with a stiff-bristled broom, perpendicular to line of traffic.

D. Do not remove forms for at least 24 hours after concrete has been placed.

E. After form removal, clean ends of joints and point-up any minor honeycombed areas.

F. Remove and replace areas or sections with major defects.

3.10 WASTEWATER

A. Wastewater generated during cleaning of the concrete truck must not be disposed on

National Forest land. Contractor must properly dispose of this waste off National

Forest Land with land owner approval.

3.11 REPAIRS AND PROTECTIONS

A. Repair or replace broken or defective concrete.

B. Protect concrete from damage until acceptance of work.

Meta Lake Well Deepening 15 Hand Pumps

Section 221123

SECTION 221123

HAND PUMPS

PART 1– GENERAL

1.01 SUMMARY

A. This section specifies installation of hand pumps.

1.02 SUBMITTALS

A. Submit sufficient descriptive literature to demonstrate compliance with these specifications for the following:

1. Hand Pump.

2. Pump Cylinder.

B. Furnish 1 copy of the manufacturer's installation instructions for the hand pump and 1 copy of a parts list.

PART 2– PRODUCTS

2.01 MATERIALS

A. Pump Stand.

1. Monitor Model 1DFHFS with pump shroud, drinking fountain type pump with reservoir, drinking fountain, hydrant and drain pipe, and integral base flange, Ohio Pattern Base, Baker Manufacturing Company, Evansville, WI, or approved equal.

2. Pump stand shall include:

a. Adjustable stroke with a minimum of 3 leverage pin positions.

b. Packing nut and packing.

c. Screened well vent.

d. 1” well access port.

B. Pump Cylinder.

1. Brass-lined cast iron barrel, 2 leather brass plunger tapped for 7/16 inch diameter pump rod, and brass check valves. Cylinder size and pump stroke shall be based on depth to water in well:

Cylinder diameter size (inches)

5" Stroke Depth to

Water (feet)

7-1/2" Stroke Depth to Water (feet)

10" Stroke Depth to Water (feet)

2-1/2 141 99 76

C. Drop Pipe.

1. 1- ¼ inch galvanized steel pipe, threaded and coupled, ASTM A53/A, Schedule 40.

D. Caulking Seal.

1. Silicone base; clear.

Meta Lake Well Deepening 16 Hand Pumps

PART 3– EXECUTION

3.01 CONSTRUCTION

A. Hand pump Orientation

1. Orient hand pump as directed by the CO.

3.02 INSTALLATION

A. Disinfection of the Well.

1. Pour chlorine solution into well just before installing pump cylinder and drop pipe assembly. Chlorine solution shall be a solution of 1 cup 5-1/4 percent chlorine bleach diluted in 5 gallons of clear water into the well for each 20 feet of standing water. Disperse chlorine evenly through the well by pouring chlorine solution through a hose or pipe that is moved up or down in the well.

a. Note: 1/6 cup of 5-1/4 percent household bleach per 5 gallons of water is approximately a 100 mg/l chlorine solution.

b. Wash the exterior surface of the drop pipe and pump cylinder with a 100 mg/l chlorine solution as they are lowered into the well.

c. After installation of the hand pump is completed, operate the hand pump until the distinct odor of chlorine is detected in the discharge.

d. Allow chlorine to remain in the well for a minimum of 4 hours, preferably overnight.

e. After disinfection, flush the well until the free chlorine residual is measured less than 0.5 mg/l.

f. Government will be sampling the water and testing for bacteria at the end of flushing the well. If bacteria are present, Contractor must disinfect the well again at no additional cost to the Government.

A. Hand Pump Installation.

1. Grind the top of the well casing as needed to achieve a smooth and level surface in order for the hand pump to sit level with no gaps or openings.

2. Chlorinate the well before installing the pump cylinder and drop pipe assembly.

3. Install hand pump, pump rod, drop pipe, and pump cylinder in accordance with manufacturer's instruction. One (1) copy of the instructions shall be at the job site before installation of the hand pump or pump cylinder can begin.

4. Install pump cylinder 5 feet above bottom of the well or as directed by the CO.

5. Equal lengths of drop pipe and pump rod shall be installed on the pump.

6. Particular care shall be taken to install cylinder piston in center of cylinder so it does not strike the top or bottom of the cylinder during operation of the pump handle.

7. Drill 1/8” weep hole in drop pipe and install at minimum 5 feet below ground surface. Do not torch cut weep hole. Check weep hole by operating the hand pump until water is discharged. Let pump stand idle for 2 minutes and operate again. If water is discharged from the spout within 1 or 2 strokes of the pump handle, recheck weep hole to see if it is plugged or the incorrect size.

8. Tighten set screws at pump base and seal flange joint at casing with silicone caulking.

Meta Lake Well Deepening 17 Hand Pumps

9. Particular care shall be taken to install cylinder piston in center of cylinder so it does not strike the top or bottom of the cylinder during operation of the pump handle.

10. Operate pump continuously for 5 minutes in the presence of the CO to demonstrate proper functioning. This can be done as part of flushing the well after disinfection.

11. Keep pump inoperable to the public at all times.

Meta Lake Well Deepening 18 Site Clearing and Grubbing

Section 311100

SECTION 311000

SITE CLEARING AND GRUBBING

PART 1– GENERAL

1.01 SUMMARY

A. Section includes clearing and grubbing; salvage and protection of sensitive soils, eruption logs, stumps, and other blast artifacts.

1.02 QUALITY ASSURANCE

A. Quality Control: The Contractor shall establish and maintain quality control to assure compliance with the drawings, specifications of the work of this Section and with the understanding that the overriding design intent is to maintain the appearance of minimal human intervention following the eruption.

1.03 REFERENCE

A. Important specifications relative to this Section are in Section H including the paragraph titled “LANDSCAPE PRESERVATION AND RESTORATION.

PART 2– PRODUCTS

2.01 Plywood and Timbers

A. Plywood and timbers, length and widths suitable for covering sensitive soils, vegetative ground cover, paved walkway and curbing to protect from equipment damage and damage by treading within work limits.

2.02 Other materials

A. Other materials may be used for ground cover, paved walkway and curbing protection upon approval by the CO.

PART 3– EXECUTION

3.01 PROTECTION

A. Use plywood to protect existing soil and vegetative ground cover that are vulnerable to damage within work limits.

B. Protect existing pavement, walkways, and stone curbing from damage during construction. Vehicle access to the well is limited and the drill rig will need to be backed in to access the well. Any vehicles entering the well site will need to traverse a 5-inch stone curb. It may be necessary to furnish plywood and timbers that will act as a ramp over the curb. Take all measures necessary to keep construction operations within the work limits as shown in the Drawings.

3.02 CLEARING AND GRUBBING

A. Clear and move stumps, log pieces, stumps, stump pieces, and wood debris that block accessibility for the drill rig. Leave as much of the site as undisturbed as possible and only remove what is necessary to perform the work. They shall be carried to their new location in a manner which will minimize damage. Dragging of stumps or logs with chains and/ or cables will not be permitted.

B. Trim back vegetation inside the boundaries of the work limits. Vegetation, decayed logs, and roots which are inside the dimensions of the concrete slab shall be grubbed.

C. Once work is finished, reposition logs, stumps, and wood debris as close to their original location as possible.

Meta Lake Well Deepening 19 Site Clearing and Grubbing

Section 311100

Meta Lake Well Deepening 20 Structural Demolition, Backfill, and Compaction

Section 312300

SECTION 312300

STRUCTURAL DEMOLITION, EXCAVATION, BACKFILL AND

COMPACTION

PART 1 – GENERAL

1.01 SUMMARY

A. Includes concrete slab removal, excavation, fills, backfill, and compaction.

1.02 PROTECTION

A. Protect excavations from freezing. If frost action occurs, compact ground after thawing as specified herein.

1.03 REFERENCES

A. Standard Moisture Density Test AASHTO T-99, Method C or D.

1.04 SUBMITTALS

A. Fill and backfill material certification

1. Provide certification that imported fill and backfill materials not from the designated borrow pit are free of seeds, weeds, and chemical and biological contaminants.

1.05 GOVERNMENT FURNISHED FILL MATERIALS

A. Contractor may use Government designated soil located in a borrow pit near Ryan

Lake, approximately 5 miles north of Norway Pass on the western side of Forest

Road 26.

1.06 DEFINITIONS

A. Subgrade: native soil

B. Subbase: layer of gravel on top of the subgrade

PART 2 – PRODUCTS

2.01 GENERAL FILLS

A. Fill materials shall contain no organic or frozen material.

B. Excavated material from project work containing no rock larger than 3 inches.

1. Excavated material for use as fill must be of a quality that will compact, will not settle or shrink, and will not become unstable when wet.

2.02 SOIL

A. Material with no rocks larger than 2 inches in greatest dimension.

2.03 SUBBASE

A. 5/8 inch minus crushed rock, WSDOT Standard Specification 9-03.9(3)

Meta Lake Well Deepening 21 Structural Demolition, Backfill, and Compaction

PART 3 – EXECUTION

3.01 CONCRETE SLAB REMOVAL

A. Remove existing concrete slab. Exercise caution around the well casing and hand pump so that items are not damaged.

3.02 CLEARING LIMITS

A. Clearing limits shall be 6 inches outside of the proposed concrete slab.

3.03 EXCAVATION

A. Excavate to the lines, grades, elevations, and dimensions indicated on the drawings.

Extend excavation a sufficient distance from slab to allow for safety, placing and removal of forms, installation of services, and for inspection. Provide proper depth with allowance made for gravel fills, voids in concrete forms, and concrete flatwork.

1. Bottom of excavation shall be level, clean, true to size, and clear of loose materials.

2. Stockpile any excess soil or gravel material for use as fill material or grading the site.

3.04 BACKFILLING

A. Place and compact fills and backfills adjacent to structures in such a manner as to prevent wedging action or eccentric loading upon or against the structures.

B. Remove forms, and clean the excavation of trash and debris prior to backfilling.

Remove any standing water from excavation.

C. Place backfill in horizontal layers not more than 6 inches thick at optimum moisture.

Flooding or puddling not allowed. Compact each layer as specified.

D. Provide for anticipated settlement and shrinkage of the backfill and for the finished grades required, including topsoil grading.

E. Prepare subgrades level and free from soft spots. Place and compact earth fill where required to raise subgrade. Place gravel to the lines and grades shown. Compact the gravel subbase as specified until a smooth, uniform surface is obtained

F. If encountering conditions such as large roots, logs, and other vegetation, excavate and backfill with stockpiled soil or fill material.

3.05 COMPACTION

A. Prior to placement of fill, compact bottom of excavation with a mechanical compactor until there is no visible deflection.

B. Compact in 6-inch lifts with a mechanical compactor at optimum moisture until no visible deflection.

C. Ensure that depressions from excavated logs, large roots, and other vegetation are properly filled and compacted.

Meta Lake Well Deepening 22 Structural Demolition, Backfill, and Compaction

SECTION 332113

WELLS

PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies the drilling, casing, developing, sealing and test pumping of a potable water well.

1.02 SUBMITTALS

A. Prepare daily shift records and submit weekly.

B. One (1) copy of the State Well Driller’s Report within seven (7) calendar days of well completion.

C. One (1) copy of the 4-hour pump test results to the CO.

D. One (1) copy of the water quality test results to the CO.

E. Casing liner perforation segments and number of perforations prior to ordering casing with perforations or cutting perforations.

1.03 REGULATORY REQUIREMENTS

A. Except where these specifications are more stringent, all aspects of Contractor's drilling, construction, and development of the well, and abandonment if ordered by the CO, shall comply with applicable State and local codes.

1.04 PROJECT CONDITIONS

A. An existing well report is available for the drilling location and is attached in

Section J-2.

PART 2 - PRODUCTS

2.01 MATERIALS

A. Well Casing.

1. New, black welded steel, 6 inches in diameter. ASTM A53, bearing factory markings of conformance.

2. Size, Weight and Wall Thickness shall conform to the requirements of WAC

173-160-201.

3. Lengths.

a. 5 foot minimum lengths.

4. Joints.

a. Electric arc welded.

B. Well Liner

1. New PVC, 4-½ inches in diameter, shall conform to the requirements of WAC

173-160-201

C. Perforations.

1. Well liner to be perforated along the entire water bearing zone.

D. Drilling Water.

Meta Lake Well Deepening 23 Wells

Section 332113

1. Suitable for domestic consumption.

E. Cement Grout.

1. Mix Proportions.

a. Portland Cement with a maximum of 6 gallons of water per sack of cement. Up to 5 percent Bentonite clay, by weight, may be added.

2. Cement.

a. Type II or III Portland Cement.

3. Water.

a. Suitable for domestic consumption.

F. Bentonite.

1. Bentonite will not be allowed for a surface seal.

G. Sample Containers.

1. Resealable bags, or plastic or waxed cardboard containers with sealing lid; 1 quart in size.

H. Drilling Fluids.

1. A commercial agent used to aid in removal of cuttings. Bentonite may be used only with approval of the CO.

PART 3 - EXECUTION

3.01 PREPARATION

A. Exercise precautions to prevent foreign materials and surface water from entering drilled hole.

B. The Contractor shall protect the adjacent terrain and nearby surface water from siltation and contamination including from drilling fluids. If necessary, to prevent drilling fluids from reaching the stream, construct a settling basin to contain the drilling fluid, cuttings and compounds and provide a means to filter sediment prior to discharging excess water.

3.02 CONSTRUCTION

A. Removing Existing Well Casing and Cement Grout Seal.

1. Contractor shall remove of the existing well casing and cement grout seal.

Removal operation shall continue until successful or until ordered to stop in writing by the CO. Every practical means shall be used to remove the existing casing and seal that will not compromise the integrity of the borehole or render the borehole unusable.

B. Plumbness and Alignment of Wells.

1. Well plumbness and alignment shall be performed in accordance with the

AWWA standards for Water Wells, A100-06.

a. Plumbness.

1) Drill well vertical. Axis of well shall not deviate from vertical by more than casing inside diameter for each 100 feet of depth.

b. Alignment.

1) Alignment shall be such that a 20 foot length of 4-1/2” liner casing will pass all sections of the well easily.

C. Grouting.

Meta Lake Well Deepening 24 Wells

1. Utilize cement grout to shut off unsatisfactory water horizons or to stabilize caving formations. Place grout utilizing a grout pump and tremie.

D. Minimum Length of Permanent Casing.

1. The CO will determine the actual depth to which the permanent well casing shall extend; however, the casing shall extend from 18 inches above the ground surface to at least 50 feet below ground surface, which is the minimum depth of the annular well seal. Provide centering guides to keep the permanent well casing centered in the oversize drill hole.

E. Grout Surface Seal.

1. Construct the grout surface seal in the presence of the CO.

2. The annular space between the permanent well casing and the drill hole shall be completely filled and sealed with cement grout to comply with applicable

State regulations and the following:

a. Diameter of upper drill hole: Drill the annular space a minimum of 4 inches in diameter larger than the nominal diameter of the permanent well casing from the surface to a depth of at least 50 feet below the ground surface. The upper drill hole shall penetrate at least 5 feet into unfractured, consolidated rock.

3. Temporary Surface Casing Removal.

a. Furnish, install, and remove temporary surface casing necessary to support the walls of the larger well bore where the grout surface seal is to be placed.

4. Grout Surface Seal Placement.

a. Construct grout surface seal by placing or forcing grout from the bottom upward between the permanent casing and the open hole or temporary surface casing.

b. Slowly remove the temporary surface casing as the annular space is filled with grout. Alternately, the temporary surface casing may be removed immediately after the grout has been placed, but not later than 1/2 hour after initial introduction of grout into the hole.

c. Complete the surface seal by topping off the fresh grout after settlement occurs and within 1/2 hour after initial placement of the grout surface seal.

F. Permanent Casing Installation.

1. Joints.

a. Weld casing segments to form continuous, watertight casing in area to be cased. Prepare and weld casing as follows:

1) Cut casing ends square.

2) Bevel end to be joined.

3) Align casing segments.

b. Join segments together using electric arc welder. Use sufficient number of passes to completely fill slot formed. Proportion placing of weld material to provide a minimum of 3 full passes within the slot area. Remove slag from welded area between passes.

G. Permanent PVC Casing liner Installation

1. Liner pipe perforations slots 1/8 by 1 inch long; or other approved method.

2. Perforation Placement.

Meta Lake Well Deepening 25 Wells

a. Contractor shall propose the length of perforated segment and number of perforations to the CO.

H. Well Development

1. The well shall be developed using either surging or air jetting methods according to the AWWA standards for Water Wells, A100-06. Continue developing well until no more fines can be brought into the well or until ordered to stop by the CO.

I. Capping.

1. Upon completion of well, weld a temporary 3/16 inch steel plate, approximately 1/2 inch larger in diameter than casing OD, over the cut off casing top. Spot weld in 4 places around casing.

3.03 FIELD QUALITY CONTROL

A. Test Equipment.

1. Provide the following equipment for the test:

a. A 20 foot long plummet of well casing of the next smaller size than the installed well casing, with a support ring or hook on one end.

b. A 1 foot plummet with an outside diameter 1/4 inch less than the casing inside diameter; a 1/8 inch wire cable or other suitable line long enough to reach the full depth of the well, and a suitable tripod or support for suspending the cable at a point 10 foot 0 inches above and centered in the top of the casing.

B. Sampling of Penetrated Material.

1. Sampling Interval.

a. Sample at every change of material or at 5 foot intervals within the same material.

2. Sampling Procedure for Rotary Methods.

a. Remove drilled material from hole. Drill 1-1/2 feet into formation being sampled. Force drilled material out into a clean tub. Allow to settle and obtain representative sample.

3. Sampling Procedure for Cable Tool Method.

a. Bail hole clean. Drill 1-1/2 feet into formation being sampled. Remove sludge with sand pump or flat bottom bailer. Discharge into clean tub.

Allow to settle and obtain representative sample.

C. Pumping Test.

1. Supply all pumps and equipment required and perform a 4-hour quantitative pumping test on the completed well after the depth has been accurately measured by the Contractor. The pump test shall be performed in the presence and under the direction of the CO. During the pumping test, the drawdown in feet below static level and the pumping rate shall be measured at least every 2 minutes until drawdown stabilizes and every 10 minutes thereafter.

2. Test Procedure.

a. Pumping test shall be performed as follows:

1) Experiment the first 30 minutes for an optimum pumping rate.

Perform a constant rate test and reduce pumping rate if drawdown is greater than 50 percent of the static water depth. If the water level

Meta Lake Well Deepening 26 Wells stabilizes at less than 50 percent of the static water depth, continue pumping for an additional 4 hours.

2) After completion of pumping, record water level recovery every

5 minutes until static water depth is reached.

3. Measuring Equipment.

a. Measuring equipment shall consist of the following:

1) Flow Rate: Weir box, orifice, water meter, or other device satisfactory to CO for measuring flow of water.

2) Flow Control: Gate valve on pump discharge for controlling rate of water flow from pump.

3) Drawdown Depth: Provide airline complete with pressure gauge

3-1/2 inch minimum diameter, reading directly in feet. Provide tire pump. Terminate air line approximately 3 feet above pump intake.

3.04 CLEANING AND DISINFECTION

A. Clean and disinfect the well upon completion of well development.

1. Cleaning.

a. Thoroughly clean the well by removing all foreign substances and if required, swab with alkalis to remove oil and grease.

2. Disinfection.

a. After cleaning, disinfect the well with chlorine solution of sufficient strength to provide a 50 mg/l chlorine residual in all parts of well.

b. Disinfect as follows:

1) Dump concentrated chlorine solution into well.

2) Agitate well water from top to bottom with a bailer or other method approved by CO for at least 30 minutes.

3) After agitating, wash the walls of the casing above water level thoroughly with water bailed from the well.

4) Leave chlorine solution in the well for a period of at least 12 hours.

5) Test chlorine residual. If less than 10 mg/l remain, repeat disinfection process.

6) After disinfection, pump well at desired yield for a minimum of 30 minutes, or until no chlorine residual remains.

B. Water Quality Test Samples.

1. After cleaning and disinfection, Contractor shall collect water samples using established water quality testing procedures. Samples shall be submitted to a

Washington state-certified laboratory for chemical analysis of inorganic chemicals, nitrate, and coliform. One (1) copy of the laboratory test results shall be submitted to the CO.

3.05 ABANDONING WELL

A. Plugging Well.

1. If CO orders the well to be abandoned, plug the well in accordance with State regulations and standards to within 5 feet of original ground as casing is removed. Fill remaining hole to original ground with native topsoil.

Meta Lake Well Deepening 27 Wage Determination

General Decision Number: WA080037 01/01/2010 WA37

State: Washington

Construction Type: Residential

County: Skamania County in Washington.

RESIDENTIAL CONSTRUCTION PROJECTS (consisting of single family homes and apartments up to and including 4 stories).

Modification Number Publication Date

0 04/24/2009

1 06/26/2009

2 07/03/2009

3 07/17/2009

4 10/02/2009

5 11/06/2009

6 01/01/2010

CARP0003-008 07/01/2008

Rates Fringes

Carpenters: (Including

Drywall Hanging).................$ 20.18 9.52

* ELEC0048-005 01/01/2010

ELECTRICIAN......................$ 19.00 3%+7.15

* ENGI0701-007 01/01/2010

Power equipment operators:

GROUP 1.....................$ 37.27 11.50

GROUP 1A....................$ 39.13 11.50

GROUP 1B....................$ 41.00 11.50

GROUP 2.....................$ 35.64 11.50

GROUP 3.....................$ 34.64 11.50

GROUP 4.....................$ 33.71 11.50

GROUP 5.....................$ 32.60 11.50

GROUP 6.....................$ 29.61 11.50

POWER EQUIPMENT OPERATORS CLASSIFICATIONS

GROUP 1: LATTICE BOOM CRANE: Operator 200 tons through 299 tons, and/or over 200 feet boom; HYDRAULIC CRANE: Hydraulic

Crane Operator 90 tons through 199 tons with luffing or tower attachments

GROUP 1A: HYDRAULIC CRANE: Hydraulic Operator, 200 tons and over (with luffing or tower attachment); LATTICE BOOM

CRANE: Operator, 200 tons through 299 tons, with over 200 feet boom

GROUP 1B: LATTICE BOOM CRANE: Operator, 300 tons through 399 tons with over 200 feet boom; Operator 400 tons and over

GROUP 2: BULLDOZERS: Bulldozer operator over 120,000 lbs and above; Bulldozer operator, twin engine; Bulldozer

Meta Lake Well Deepening 28 Wage Determination

Operator,tandem, quadnine, D10, D11, and similar type;

HYDRAULIC CRANE: Hydraulic crane operator 90 tons through

199 tons (without luffing or tower attachment); LATTICE

BOOM CRANE: 90 through 199 tons and/or 150 to 200 feet boom; Operator, 30 tons but less than 150 tons; LOADERS:

Loader operator, 120,000 lbs. and above; HYDRAULIC

HOES-EXCAVATOR: Excavator over 130,000 lbs.; HYDRAULIC

CRANE: Hydraulic crane operator, 50 tons through 89 tons

(with luffing or tower attachment)

GROUP 3: BULLDOZERS: Bulldozer operator, over 70,000 lbs. up to and including 120,000 lbs.; HYDRAULIC CRANE: Hydraulic crane operator, 50 tons through 89 tons (without luffing or tower attachment); LATTICE BOOM CRANES: Lattice Boom

Crane-50 through 89 tons (and less than 150 feet boom);

HYDRAULIC HOES-EXCAVATOR: excavator over 80,000 lbs.

through 130,000 lbs.; LOADERS: Loader operator 60,000 and less than 120,000

GROUP 4: BULLDOZERS: Bulldozer Operator over 20,000 lbs and more than 100 horse up to 70,000 lbs; CRANE: Hydraulic

Crane Operator, under 50 tons; LATTICE BOOM CRANE OPERATOR:

Lattice Boom Crane Operator, under 50 tons; HYDRAULIC HOES

EXCAVATOR: Robotic Hydraulic backhoe operator, track and wheel type up to and including 20,0000 lbs. with any or all attachments; Excavator Operator over 20,000 lbs through

80,000 lbs.; LOADERS: Loaders Operator, front end and overhead, 25,000 lbs and less than 60,000 lbs; Rubber-tired dozers

GROUP 5: Roller Operator; BULLDOZERS: Bulldozer operator, 20,000 lbs. or less or 100 horse or less; DRILLING: Churm

Drill and Earth Boring Machine Operator; Directional Drill

Operator over 20,000 lbs pullback; HYDRAULIC HOES

EXCAVATORS: Hydraulic Backhoe Operator, wheel type (Ford, John Deere, Case type); Hydraulic Backhoe…