ScoutMtntankSpecsFinal.05.20.2021.pdf

Section C - Description/Specifications/Statement of Work

GENERAL SPECIFICATIONS

SCOUT MOUNTAIN CAMPGROUND TANK REHABILITATION

Final Submittal – 5/20/2021

SCOPE OF CONTRACT

A. This project includes constructing a replacement water distribution system for the Scout Mountain Campground.

B. The work includes:

1. Sandblasting the existing tank and installing a new waterproof membrane.

1.2 PROJECT LOCATION

A. The Scout Mountain Campground is located on the Westside Ranger District of the Caribou-Targhee National Forest, in Bannock County, Idaho, approximately 13 miles southeast of Pocatello, Idaho. The campground is located on Forest Service Road 151 approximately 5 miles by road from the intersection with South Mink Creek Road. The spring source is located near the center of Section 30, T3N, R46E (Latitude 42.690446° N, Longitude -112.357386° W) at an elevation of approximately 6611 feet.

B. Tank is located approximately 50 yards from the roadway in the southeast corner of the group site.

C. The existing water system is registered with the state of Idaho as “USFS Scout Mountain Campground”, PWS #ID6030061.

1.3 SITE INFORMATION AND LIMITATIONS

A. The following site conditions are considered incidental to the contract and the contractor will not be paid directly for any of the following items:

1. Construction sites will be closed to the public during construction. The Forest Service will issue a closure order to the public. The Contractor will be responsible for signing and limiting public access.

2. Contractor will provide all materials and labor necessary to protect streams, wet or dry, during construction activities. The Contractor will be required to submit a stream protection plan and receive approval from the COR, in writing, prior to the beginning of construction.

3. All construction equipment shall be pressure washed before entering National Forest System lands. The removal of mud and debris from treds, tracks and undercarriage, with emphasis on axles, frame, cross-members, motor mounts, and underneath steps, running boards, and front bumper/brushguard assemblies will be required. The purpose is to reduce or eliminate the transportation of noxious weeds, which is required by Federal and State regulations.

4. Utilities are not available at the site for construction purposes.

5. Toilet facilities are available at the site.

1.4 TRAFFIC CONTROL AND CONSTRUCTION SIGNING

A. No work that endangers, interferes, or conflicts with traffic or access to work sites shall be performed until a plan for satisfactory warning and handling of traffic has been submitted by the contractor and approved by the COR and Idaho Department of Transportation. Construction signing for traffic control shall conform to the Manual of Uniform Traffic Control Devices (MUTCD). All traffic control signs will be placed in areas adequate for a truck pulling a fifth wheel trailer to be turned around. Contractor shall not be paid directly for this item, rather it will be considered incidental to other items of work listed in the Schedule of Items.

1.5 WORK CAMPS, STAGING AND STORAGE AREAS

A. Areas for staging operations and storage of materials shall be approved by the CO. The Contractor must request in writing for approval from the CO to stage trailers (work or housing) on site.

1.6 INSPECTION OF WORKSITE

A. The contractor acknowledges they have taken the necessary steps to ascertain the nature and location of work and have investigated and satisfied themselves as to the general and local conditions that can affect the work or its cost. Any failure of the contractor to take the actions described and acknowledged in this paragraph will not relieve the Contractor from the responsibility of estimating properly the difficulty and cost of successfully performing the work, or for proceeding to successfully perform the work without additional expenses to the government.

1.7 START DATE

A. Fall 2021

1.8 CONTRACT TIME

A. Base Bid: 60 Calendar Days

1.9 SPECIFICATIONS

A. The following specifications are attached. Some sections in the schedule of items refer to other sections not listed and are subsidiary to or are included in payment for other pay items in this contract. These items are considered incidental and no additional compensation will be made.

Section 221205 – Potable Water Tank Waterproofing Membrane

END OF SECTION C

May 2021

POTABLE WATER TANK WATERPROOF MEMBRANE 221205-1

USDA FOREST SERVICE, R-4

SCOUT MOUNTAIN CAMPGROUND TANK REHABILITATION

SECTION 221205 – POTABLE WATER TANK WATERPROOFING MEMBRANE

PART 2 - GENERAL

2.1 SCOPE

A. Perform all work necessary to apply waterproofing membrane where required on the Drawings.

2.2 SUMMARY

A. This Section includes surface preparation and the application of the waterproofing membrane (premix agent and activator agent) on the following surface:

1. Concrete.

2.3 SUBMITTALS

A. Product Data: Submit manufacturer’s product data, including surface preparation, application, and curing.

B. Potable Water Certification: Submit certification that coating has been classified by ANSI certified laboratory to ANSI/NSF 61 in tanks, reservoirs, pipes and joints.

C. Samples: Submit 3-inch by 1-inch samples for approval by the Contracting Officer.

1. Cured high-performance coating, 60 mils thick.

2. Reinforcing fabric and joint cover sheet.

2.4 QUALITY ASSURANCE

A. Qualifications:

1. Applicator: Use applicator experienced in the application of the specified high-performance coating for a minimum of 2-years on projects of similar size and complexity. Provide a list of completed projects including project name and location, name of engineer, name of coating manufacturer, and approximate quantity of coating applied.

2. Applicator’s Supervisor: Employ a supervisor during all phases of the work that had successfully completed manufacturer’s contractor training program.

3. Applicator’s Personnel: Employ persons trained for the application of high-performance coating.

2.5 DELIVERY, STORAGE, AND HANDLING

A. Apply membrane only when the temperature of the surface is above 50 deg F.

POTABLE WATER TANK WATERPROOF MEMBRANE 221205-2

B. The membrane shall be at least 60 deg F when mixed and applied.

C. Do not apply when substrate or ambient temperature is rising or coating is in direct sunlight.

D. Do not apply in snow, rain, fog, or mist; when relative humidity exceeds 85 percent; at temperatures less than 5 deg F above the dew point; or to damp or wet surfaces.

2.6 MEASUREMENT AND PAYMENT

A. Waterproof Membrane: Payment will be lump sum for furnishing and applying the waterproofing membrane to the water storage tank, including tank cleaning and preparation, and all incidentals necessary to complete the work.

PART 3 - PRODUCTS

3.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by the following manufactures:

1. C.I.M. Industries Inc. or an approved equal.

3.2 GENERAL

A. High-performance coating: CIM 1061. Two-component, high solids, elastomeric asphalt modified urethane. Designed for spray, squeegee, or roller application.

1. Potable Water Service: Classified for potable water contact in tanks, reservoirs, pipes, and joints in accordance with ANSI/NSF 61 up to 180 degrees F (82 degrees C).

2. Elastomeric Waterproofing, ASTM C836 and C957: Exceeds all criteria.

3. Solids by volume: 88 percent.

4. Volatile Organic Compounds (VOC): 0.75 pounds per gallon (90 g/L).

5. Mullen Burst Strength, ASTM D751, 50 mils in CIM Scrim: 150 pounds per square inch.

6. Tear Strength, ASTM D624, Die C: 180 pounds per inch.

7. Tensile Strength, ASTM D412, 100-mil sheet: 1000 pounds per square inch.

8. Extension to Break, ASTM D412: 350 percent.

9. Recovery from 100 Percent Extension:

a. After 5-minutes: 98 percent.

b. After 24-hours: 100 percent.

10. Coating Performance, Crack Bridging:

a. 10 Cycles at minus 15 degrees F (minus 26 degrees C): Greater than 1/8-inch.

b. After Heat Aging: Greater then 1/4-inch.

POTABLE WATER TANK WATERPROOF MEMBRANE 221205-3

11. Coating Performance, Weathering, ASTM D822: 5000 hours - no cracking.

12. Softening Point, ASTM D36: Greater than 325 degrees F (160 degrees C).

13. Deflection Temperature, ASTM D648: Below minus 60 degrees (minus 50 degrees C).

14. Service Temperature: Minus 60 degrees F to 220 degrees F (minus 50 degrees C to 105 degrees C).

15. Hardness, ASTM D2240, Shore A, 77 degrees F (25 degrees C): 65.

16. Permeability to Water Vapor, ASTM E96, Method E, 100 degrees F (38 degrees

C), 100-mil sheet: 0.03 perms.

17. Abrasion Resistance, Weight Loss, ASTM D4060: 1.2 mg.

18. Adhesion to Concrete, Dry, Elcometer: 350 pounds per square inch.

19. Color: Black.

B. Bonding Agent: CIM Bonding Agent. Organosilane compound dispersed in isopropyl alcohol. Ensures a continuous and uniform bond between surfaces. Use the bonding agent over non-porous surfaces such as steel, except where primer has been installed.

Do not use where solvent cleaners are prohibited.

1. Potable Water Service: Classified for potable water contact in tanks, reservoirs, pipes, and joints in accordance with ANSI/NSF 61.

2. Solids by Volume: Less then 1 percent.

3. Volatile Organic Compounds (VOC): 6.4 pounds per gallon (743 g/L).

C. Patching Material: CIM 1000 Trowel Grade. Liquid applied, chemical and corrosion resistant urethane elastomer, chemically thickened to allow trowel application with minimum sag. Use as a crack filler and for application to vertical surfaces and cold joints.

1. Potable Water Service: Classified for potable water contact in tanks, reservoirs, pipes, and joints in accordance with ANSI/NSF 61 up to 180 degrees F (82 degrees C).

2. Elastomeric Waterproofing, ASTM C836 and C957: Exceeds all criteria.

3. Solids by volume: 89 percent.

4. Volatile Organic Compounds (VOC): 0.74 pounds per gallon (88 g/L).

5. Mullen Burst Strength, ASTM D751, 50 mils in CIM Scrim: 150 pounds per square inch.

6. Tear Strength, ASTM624, Die C: 150 pounds per inch.

7. Tensile Strength, ASTM D412, 100-mil sheet: 800 pounds per square inch.

8. Extension to Break, ASTM D412: 300 percent.

9. Recovery from 100 Percent Extension:

a. After 5-minutes: 98 percent.

b. After 24-hours: 100 percent.

10. Coating Performance, Crack Bridging:

a. 10 Cycles at minus 15 degrees F (minus 26 degrees C): Greater than 1/8-inch.

b. After Heat Aging: Greater then 1/4-inch.

POTABLE WATER TANK WATERPROOF MEMBRANE 221205-4

11. Coating Performance, Weathering, ASTM D 822: 5000 hours - no cracking.

12. Softening Point, ASTM D36: Greater than 325 degrees F (160 degrees C).

13. Deflection Temperature, ASTM D648: below minus 60 degrees (minus 50 degrees F).

14. Service Temperature: minus 60 degrees F to 220 degrees F (minus 38 degrees C to 105 degrees C).

15. Hardness, ASTM D2240, Shore A, 77 degrees F (25 degrees C): 60.

16. Permeability to Water Vapor, ASTM E96, Method E, 100 degrees F (38 degrees

C), 100-mil sheet: 0.03 perms.

17. Abrasion Resistance, Weight Loss, ASTM D4060: 1.2 mg.

18. Adhesion to Concrete, Dry, Elcometer: 350 pounds per square inch.

19. Color: Black.

PART 4 - EXECUTION

4.1 GENERAL

A. Applicator/Installer must be Confined Space Certified.

B. Applicator must follow all OSHA or other applicable regulations for confined space entry and work.

4.2 EXAMINATION

A. Examine substrates and conditions, with Applicator present, for compliance with requirements for maximum moisture content and other conditions affecting performance of work.

B. Verify suitability of substrates, including surface conditions and compatibility waterproofing membrane.

C. Begin coating application only after unsatisfactory conditions have been corrected and surfaces are dry. SURFACES MUST BE ABSOLUTELY DRY.

1. Beginning coating application constitutes Contractor's acceptance of substrates and conditions.

4.3 PREPARATION

A. Prepare surface in accordance with manufacturer’s instructions.

B. Provide clean, dry, and structurally sound steel surface.

C. Existing Concrete: Remove existing coating.

D. Scarify surface for primed steel.

E. Abrasive blasting:

1. Prepare concrete surface to receive high-performance coating by abrasive blasting.

POTABLE WATER TANK WATERPROOF MEMBRANE 221205-5

2. Remove dirt, soil, grease, oil, paint, coatings, loose material, and other foreign materials that would inhibit performance of high-performance coating by abrasive blasting.

3. Immersion Service: SSPC-SP10/NACE No. 2 – Near-White Blast Cleaning.

4. Non-immersion Service: SSPC-SP6/Nace No.3 – Commercial Blast Cleaning.

5. Maintain air supply for abrasive blasting free of oil and water in accordance with

ASTM D4285.

4.4 APPLICATION

A. Apply bonding agent in accordance with manufacturer’s instructions for cleaned steel surfaces.

B. Apply high-performance coating in accordance with manufacturer’s instructions.

C. Keep material containers tightly closed until ready for use.

D. Keep equipment, air supplies, and application surfaces dry.

E. Mix and apply when high-performance coating is above 60 degrees F (15 degrees C).

F. Do not use adulterants, thinners, or cutback solutions.

G. Blend and mix 2-component materials in accordance with manufacturer’s instructions.

Do not hand mix components.

H. Maintain air supply for material spray application free of oil and water in accordance with ASTM D4285.

I. Apply high-performance coating directly to a clean and dry surface or to reinforcing fabric.

J. Apply a 6 to 12-inch wide strip of joint cover sheet over cracks over 1/8-inch wide, non-working joints, and edges. Adhere center joint cover sheet over all joints by applying a tack coat of the high-performance coating.

K. Apply sufficient high-performance coating to achieve 60-mils wet film thickness for containment of potable water.

L. Joint Lines:

1. Prepare for joint lines should rain or other conditions require work stoppage or extended delay.

2. Install joint lines clean and straight. Install overlap 6-inches minimum to ensure an impervious joint.

3. Severely abrade with wire brush or sandpaper and apply bonding agent to all areas where the high-performance coating has cured beyond its recoat window.

M. Recoating:

1. Recoat the high-performance coating system within the recoat window to obtain maximum interlayer adhesion to build specific thickness.

POTABLE WATER TANK WATERPROOF MEMBRANE 221205-6

2. Immersion Service: Minimize areas to be recoated outside the recoat window, except at joint lines.

3. Non-Immersion Service: Severely abrade with wire brush or surface grinder, apply bonding agent, and recoat, if high-performance coating has cured more than the recoat window. Acceptable adhesion can only be achieved though aggressive abrading.

4.5 CURING

A. Cure high-performance coating in accordance with manufacturer’s instructions.

B. Curing Time: Allow sufficient time for solvents to evaporate from the cured high-performance coating before placing into service.

C. Receive approval of cured coating by Contracting Officer.

4.6 FIELD QUALITY CONTROL

A. Waterproof Membrane Materials Testing: Owner reserves the right to invoke the following procedure at any time and as often as Owner deems necessary during the period when membrane is being applied:

1. The Contractor will engage the services of a qualified testing agency to sample membrane materials being used. Samples of material delivered to Project site will be taken, identified, sealed, and certified in presence of Contractor.

2. Testing agency will perform tests for compliance of membrane materials with product requirements, and test results shall be submitted to the Owner.

3. Owner may direct Contractor to stop applying membrane if test results show materials being used do not comply with product requirements. Contractor shall remove non-complying materials from Project site, pay for testing, and re-apply materials.

B. Waterproof Membrane Thickness Test: Owner reserves the right to invoke the following procedure at any time and as often as Owner deems necessary after the period when membrane is being applied.

1. The Contractor shall verify the 60 mil thickness of the applied waterproof membrane. There shall be one (1) thickness verification every 100 square feet of applied waterproof membrane. Verifying the thickness of the applied waterproof membrane shall be completed by using one of the following processes:

a. Measure with a wet film thickness gauge before the membrane has cured.

b. After membrane has cured, cut a segment of lining out of the wall and measure with a micrometer. The Contractor will then have to patch the segment of waterproof membrane.

4.7 DISINFECTION, CLEANING AND PROTECTION

POTABLE WATER TANK WATERPROOF MEMBRANE 221205-7

A. The waterproofing membrane must be washed, rinsed, and disinfected in accordance with C.I.M. Industries Instruction Guide “Decontamination or Washing Procedures for Potable Water Tank and Fish Pond Service” (IG-10).

B. At end of each workday, remove rubbish, empty cans, rags, and other discarded materials from project site.

C. After completing application, clean spattered surfaces with mineral spirits. Cured materials are very difficult to remove; soaking in solvent will soften material and may assist in removal. Do not scratch or damage adjacent finished surfaces.

4.8 INSPECTION AND TESTING

A. Leak Test for 7,000 Gallon Tank

1. The tank, excluding the access openings, shall be subjected to a leak test. The Contractor shall furnish all facilities and personnel for conducting the test and shall conduct the test.

2. All nozzles shall be sealed to prevent water from escaping during the test. Water shall be introduced into the tank until the level reaches the top of the tank but shall not extend into the access openings. At least 24 hours shall be allowed for the tank to stabilize. The tank will be termed "Acceptable" if the level remains the same after 8 hours.

3. If the tank fails to meet the acceptable test requirements, the Contractor shall determine the source of leakage and make the necessary repairs or adjustments, as approved by the Contracting Officer, until the acceptable criteria is met.

4.9 FINAL DISINFECTION

A. Tank shall be disinfected at the time of leak testing by filling the tank with a 25 mg/L chlorine solution and leaving for 24 hours. Acceptable forms of disinfection include liquid chlorine and sodium hypochlorite. Calcium hypochlorite is not acceptable. After disinfection, drain and flush the chlorine solution from the tank. The chlorinated water shall not be flushed into nearby waterways.

END OF SECTION 221205

May 2021