Attachment_4_1_-_Specifications_-_updated.pdf

GENERAL INFORMATION AND REQUIREMENTS

GAOA-Mudsprings Campground Improvements

01009 - 1

SECTION 01009

PART 1: GENERAL

1.1 SUMMARY

A. Description of Work: Furnishing labor, equipment, supplies, and materials, for the demolition and disposal and/or salvage of items within an existing campground including but not limited to the removal of precast concrete toilet buildings/vaults, buried water tanks and items associated with a water system, tables, fire rings, fencing, and miscellaneous isolated items.

Work also includes the installation of new precast concrete toilet buildings, buried water tank and water system, tables and fire rings, post and cable fencing, boulder retaining walls and individual boulder placement, construction of parking areas and picnic areas, placing crushed aggregate surfacing onto prepared roadways and parking areas, constructing concrete parking areas and walkways, and other miscellaneous work associated with a campground and described herein.

B. Location: Work under this Contract is located in Mesa County, Colorado.

The work locations are shown on the drawings.

C. Materials Quantity Sheet: Describes the estimated quantities of material or specific items required for the new construction as shown on the drawings for each individual work location, as well as the estimated total quantity of items required for the project.

1.2 REFERENCES

A. Referenced Specifications/Standards with Abbreviations and/or Acronyms:

Wherever the following acronyms are used in these specifications or on the drawings, they are to be construed the same as the respective expressions represented. Copies of the referenced specifications/standards referred to herein may be procured by the Contractor, from the following:

AASHTO American Association of State Highway and Transportation

Officials 444 North Capitol Street, N.W., Suite 249 Washington, DC 20001

AASHTO M 147-65 Materials for Aggregate and Soil

Aggregate Subbase, Base and Surface Courses (R1993)

ACI American Concrete Institute

P.O. Box 19150 Detroit, MI 48219

ACI 305R-91 Hot Weather Concreting ACI 306R-88 Cold Weather Concreting ACI 347R-94 Guide to Formwork for Concrete

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ASTM American Society for Testing and Materials 100 Barr Harbor Dr.

West Conshohocken PA 19428-2959

ASTM A 615/A 615M REV B-95 Deformed and Plain Billet Steel Bars for Concrete Reinforcement

ASTM C 94-94 Ready-Mixed Concrete ASTM C 143 REV A-90 Test Methods for Slump of Hydraulic Cement

Concrete ASTM C 260-95 Air-Entraining Admixtures for Concrete ASTM C 270 REV A-95 Mortar for Unit Masonry ASTM C 309-95 Liquid Membrane-Forming Compounds for

Curing Concrete ASTM D 3035-93 Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter

AWWA American Water Works Association 6666 West Quincy Avenue Denver, CO 80235

AWWA B 300-92 Hypochlorites AWWA C 901-88 Polyethylene (PE) Pressure Pipe and

Tubing NSF National Sanitation Foundation

3475 Plymouth Rd.

Ann Arbor, MI 48105

1.3 DEFINITIONS

A. Approvals: Approval of the submittals is an indication that the Contractor's submittals have been reviewed and that there are no objections, except as noted. Approval of deviations shall apply only to those deviations or omissions from the requirements of the drawings and specifications brought to the Contracting Officer's attention in writing.

After approval of an item, submit a substitute for approval when the approved item cannot be purchased or delivered in time to avoid delay in completion of the project.

1.4 SUBMITTALS

A. Scope: Submittals include design computations, shop drawings, manufacturers' literature and installation instructions, materials compliance, as-built drawings, samples, testing laboratory to be used for water sampling, and maintenance manuals.

B. Requirements: Refer to specifications for submittals required. Allow at least 5 working days for review. Submittals shall be delivered electronically in PDF format to Blaine Vecchia, bvecchia@blm.gov.

C. Identification of Submittals: Completely identify each submittal by showing at least the following information:

1. Name and address of submitter, plus name and telephone number of the individual to contact for further information.

2. Name of project as it appears in these specifications.

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3. Contract number, drawing number, and specification section number to which the submittal applies.

4. Whether this is an original submittal or resubmittal.

5. Each item shall clearly note the manufacturer's name and address, trade name, product, lot, style, color, catalog designation or model number, and locations of use.

1.5 CERTIFICATES OF CONFORMANCE

A. Requirements: The Contracting Officer may permit use, prior to sampling and testing, of materials when accompanied by Certificates of Conformance.

Materials used on the basis of a Certificate of Conformance may be sampled and tested. Installation of materials on the basis of Certificates of Conformance shall not relieve the Contractor of responsibility for incorporating materials which conform to the requirements of the drawings and specifications. Material not conforming to those requirements will be subject to rejection, whether in place or not.

B. Format: The Certificate of Conformance provided by the supplier shall:

1. State that the named product conforms to the Contract requirements.

2. Either be accompanied with a certified copy of the test results, or certify that such test results are on file with the manufacturer and will be furnished to the Contracting Officer upon request.

3. Provide the name and address of the manufacturer, the testing agency, and the date of tests.

4. Set forth the means of identification which will permit field determination of the product delivered as being the product covered by the certification.

1.6 QUALITY ASSURANCE

A. Codes and Standards: The work shall comply with codes and standards applicable to each type of work and as listed in the individual sections of these specifications. This Contract incorporates materials, applications, and tests by reference, with the same force and effect as when they were given in full text.

B. Conflict: Where a conflict occurs between reference documents and project specifications, the project specifications shall govern.

C. Measurements: Where approved manufacturer's diagrams and shop drawings give specific measurements or rough-in dimensions for equipment, these dimensions shall take precedence over dimensions indicated on the drawings.

D. Equipment: Prior to ordering equipment, verify dimensions and functions of equipment proposed for use.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Delivery: Protect products incorporated into the work from damage while in transit to the site. Products must be delivered in original unopened containers with manufacturer's name, brand designation, and contents legibly indicated.

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B. Storage: Provide temporary storage facilities for products if applicable due to delays caused by winter. Storage shall comply with the manufacturer's instructions. The storage area shall permit access for inspection and handling.

C. Handling: Load and unload products protecting them from damage.

1.8 PROJECT/SITE CONDITIONS

A. Access to the Work: As per Federal Acquisitions Regulations Clause 52.236-10. Access to work locations within the sites shall be limited to existing roads only.

B. Environmental Considerations: As per Federal Acquisitions Regulations Clause 52.236-9 and 52.236-10.

1.9 SEQUENCING AND SCHEDULING

A. Construction Period Window: Work shall not start prior to September 6, 2022 and shall be completed no later than M ay 26, 2023.

B. Work Schedule: The schedule shall be submitted within 5 calendar days after signing the Notice to Proceed and as per Federal Acquisitions Regulations Clause 52.236-15. When requested, submit an updated schedule. At a minimum, the schedule will state the estimated timeframes for the work to be performed.

PART 2: PRODUCTS

(There are no applicable requirements.)

PART 3: EXECUTION

3.1 PROJECT MEETINGS

A. Pre-Work Conference:

1. Will be held prior to the start of work. The Contractor will be notified in advance of meeting time, date and place. The purpose will be to review required work, project drawings and specifications, construction schedules, payroll and payments, and administrative provisions of the Contract.

2. The Contractor, subcontractors and the persons responsible for coordination of the work shall be present at the meeting.

3. Be prepared to summarize and explain procedures planned for the project.

B. Progress Meetings:

1. To be held at the project site, or as determined by the Contracting

Officer.

2. May be called by either the Contracting Officer or the Contractor.

Request shall state who should attend and include an agenda.

C. Final Inspection:

1. To be held at the project site, or as determined by the Contracting

Officer.

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2. Notify the Contracting Officer in writing at least 5 working days before the completion date so the Government can schedule final inspection.

3. The superintendent shall be present during this inspection.

3.2 PREPARATION

A. Work Layout: The coordinates used for creating the layouts are site un-corrected Datum. The construction drawing was created in AutoCAD Civil 3D, version 2020.

The contractor shall be responsible for developing the construction stakeout plan for construction staking/marking for the installation and construction of all items listed in the specifications and drawings. The contractor shall be given an electronic copy (CAD drawing) of the construction drawing for the development of the stakeout plan, or upon request given an electronic “txt” or “csv” file containing the coordinates and elevations of the finished design in place of the electronic construction drawings. Submit an electronic copy and paper printout of the completed stakeout plan for review a minimum of 5 working days prior to starting work.

B. Work Limits and Control Points: Will be established by the Contracting

3.3 SALVAGEABLE ITEMS

A. Requirements: Salvageable items listed in Section 02223 Contractor until the removal of those items by the Government can be scheduled. Remove and store items designated as salvage for the Government at the locations onsite as designated by the Contracting Officer.

3.4 DISPOSAL OF DEBRIS

A. Requirements: Items or debris not designated as salvage for the Government shall become the property of the Contractor. Disposal of materials in a legal manner and payment of fees required is the Contractor's responsibility.

3.5 WARRANTY

A. Requirements: Materials and equipment furnished under this Contract shall be covered by the most favorable commercial warranties given to customers for such materials or equipment. The rights or remedies provided herein are in addition to and do not limit rights afforded to the Government by other clauses of this Contract. With respect to warranties, expressed or implied, from manufacturers or suppliers for materials or equipment furnished under the Contract the Contractor shall:

1. Obtain warranties that would be given in normal commercial practices.

2. Require warranties to be executed, in writing, for the benefit of the

Government.

3. Submit warranties to the Contracting Officer prior to the final inspection.

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PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT

A. Payment: No direct payment for the work described under this section will be made. Consideration for this item shall be included in the bid price for other items of the Contract.

END OF SECTION

GAOA-Mudsprings Campground Improvements MOBILIZATION 3/22

01505-1

SECTION 01505

MOBILIZATION

1.1 SUMMARY

A. Section Includes: Preparatory work and operations, including those necessary to the movement of personnel, equipment, supplies and incidentals to the project site; and for other work and operations which must be performed, or costs incurred prior to beginning work on the various items on the project site.

PART 3: EXECUTION

(There are no applicable requirements.)

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: Progress payments will be made as follows:

1. When 5% of the original Contract amount is earned from other bid items, 50% of the amount bid for mobilization or 5% of the original total Contract amount, whichever is lesser, will be paid. Upon completion of work for the project, when all equipment and materials have been removed from the work site and the site has been approved by the Contracting Officer, the remaining Contract amount for mobilization/demobilization may be invoiced.

2. The total sum of all payments shall not exceed the original

Contract amount bid for mobilization, regardless of the fact that the Contractor may have shut down the work on the project or moved equipment away from the project and then back again.

A. Payment: Payment will be made under:

Pay Item Pay Unit

01505(1) Mobilization. . . . . . . . . . . . . . . . . Lump Sum

SITE DEMOLITION

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02223 - 1

SECTION 02223

A. Section Includes: The removal, disposal, and salvage of identified items.

Work includes removal of Precast Concrete Toilet Structures, Concrete Flatwork, a potable Water Systems, Concrete and Steel Picnic Tables, Steel Fire Rings, Post and Cable Fence, Timber Bumper Logs, Timber Tent Pads, and other miscellaneous items as shown on the drawings, and backfilling cavities left after removal is complete.

(No products are required in this section.)

3.1 PREPARATION

A. Vault Toilets: Toilet Vaults shall be emptied of all human waste prior to demolition.

B. Materials designated for salvage shall be placed onsite at a location designated by the Contracting Officer until removed from the site by the Government. The Contractor shall supply equipment and labor to load the salvaged items onto a Government trailer. The Government shall be responsible for securing the items once loaded.

3.2 DEMOLITION

A. Single Vault Concrete Toilets: Remove and dispose of 4 precast toilet buildings and concrete vaults and all associated items and hardware associated with the buildings. Toilet structures are approximately 30 year old “Gunnison” model style precast concrete toilets as manufactured by CXT Inc., cxtinc.com, with 1000-gallon concrete vaults. Vaults are lined with plastic insert. Backfill voids after removal of the items with imported fill material as described in Section 02315.

Note: Lifting hardware and connections methods for the existing vaults and buildings may be different than the size and style of lifting hardware used currently by CXT for installing vaults and buildings.

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Upper Toilets

Lower Toilets B. Concrete Flatwork: Remove and dispose of approximately 2425 SF of concrete flatwork. Removal includes but is not limited to the removal and disposal of concrete parking areas, walkways, toilet entry way, and water hydrant pads. Concrete is estimated to be between 4”-6” thick with rebar. ADA parking near Upper Toilets includes 2 steel ballards.

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Concrete Parking with Steel Ballard’s

C. Potable Water System: Remove and salvage 2-buried 500-gallon fiberglass water tanks and manhole risers. Drain tanks of all water prior to removal if applicable. Remove and dispose of all other items within the water system including but not limited to valve boxes, valves, fittings, surface piping. Removal of buried waterline is not required. See drawings “Existing Water Storage Area” and “Existing Water Tank Diagram” for additional information.

Note: Prior to the demolition of the water system, install a temporary waterline starting near the existing valve box upstream from the tanks and direct water flow in the vicinity/drainage of the winter bypass as shown on the drawings.

D. Picnic Tables:

a. Concrete Picnic Tables: Remove and salvage 17 each precast concrete picnic tables. Tables are 1 piece construction, similar in size and weight to the specified proposed concrete picnic as described in Section 10990.

b. Steel Picnic Tables: Remove and dispose of all steel picnic tables.

Steel tables include 7 each steel pedestal tables including concrete bases and 7 each tubular frame picnic tables. Tables have plastic coated expanded metal tops and benches.

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Steel Pedestal Picnic Table

E. Steel Fire Rings: Remove and dispose approximately 26 steel fire rings and pedestal grills. Fire rings vary in height between 7”–23” with 1/4” steel circular steel walls and flip top steel bar grates. Removal includes all anchor pins and concrete if applicable.

Concrete Picnic Table and Steel Fire Ring

F. Post and Cable Fence: Remove approximately 1035 feet of existing Post and Cable Fence. Remove and salvage all cable from fence and all wood posts that are still of acceptable condition and undamaged as determined by the COR. Dispose of all rotting or damaged wood posts . Number of salvaged and disposed posts to be determined at time of removal.

G. Timber Bumper Logs: Remove and dispose of 12 each timber barrier logs approximately 14” in diameter and ranging in length from 12’ to 20’.

Barriers includes 2 concrete stands per barrier log.

H. Timber Tent Pads: 13 each tent pads consisting of 4 - 6”x6”x12’ treated timbers per pad filled with class 6 aggregate or crusher fine material.

Remove and salvage all timbers that are of acceptable condition as

02223 - 5 determined by the COR. Dispose of all rotting or damaged timbers. Number of salvaged and disposed timbers to be determined at time of removal. Remove and re-use the aggregate material currently within the tent pads as fill material as approved by the COR.

I. Miscellaneous Removal of Items: Remove and salvage existing items within the campground that are not listed above. Items include but are not limited to one-single panel wood kiosk, metal fee tube, metal register box, campground signs and road signs. Remove and dispose of concrete footings for items if applicable.

3.3 SALVAGE

A. Placement After Removal: Store items removed as salvage at a location onsite as determined by the Contracting Officer. Place items in a manner that will not cause damage and will allow access for future loading and removal from the worksite by the Government.

3.4 DISPOSAL OF DEBRIS

A. Requirements: Items or debris not designated as salvage for the Government shall become the property of the Contractor. Remove such materials from the site and dispose of in a legal manner.

3.5 BACKFILLING

A. General: Fill cavities caused by demolition and removal of items. Fill disturbed areas where concrete flatwork or aggregate has been removed, and that fall outside of the proposed work areas, with topsoil material collected from the proposed construction. See Section 02315.

B. Backfill Placement: Place backfill according to Specification Section

02315.

A. Units: Demolition will be measured and paid for on a lump sum basis.

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

02223(1) Campground Demolition . . . . . . . . . . . . . Lump Sum

CLEARING AND GRUBBING

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02231 - 1

SECTION 02231

A. Section Includes: Clearing of vegetation, and grubbing of stumps, roots, and debris; and other incidental work related to preparing the site for later use.

1.2 DEFINITIONS

A. Clearing: Clearing shall consist of the felling, trimming, and cutting of obstructions such as trees into sections and the satisfactory disposal of the trees and other surface vegetation designated for removal.

B. Grubbing: Grubbing shall consist of the removal and disposal of below-surface stumps, roots larger than 3-inches in diameter.

1.3 PROJECT/SITE CONDITIONS

A. Burning of Slash: Shall not be permitted.

B. Landscape Preservation: Protect vegetation outside the work limits from injury. Existing trees and shrubs shall not be disturbed or damaged.

3.1 CLEARING

A. Requirements: Clear trees, stumps, roots, brush, and other vegetation in areas to be graded or fall within the footprint of the proposed work. Limbs and branches that interfere with the proposed work shall be cut and removed as needed to prevent breaking of the limbs during construction.

3.2 SALVAGE

A. Trees and Limbs: 6-inch diameter and larger shall be cut into 6 foot lengths and stockpiled at a location(s) designated by the Contracting Officer.

Trees larger in diameter than 6” in diameter shall be removed to a depth of not less than 18 inches below the original ground surface.

B. Trees and Limbs: Smaller than 6-inches in diameter shall be cut into manageable sizes and scattered throughout the worksite as designated by the Contracting Officer.

GAOA-Mudsprings Campground Improvements 03/2022

02231 - 2

EXCAVATION AND FILL

GAOA-Mudsprings Campground Improvements 3/22

02315 - 1

SECTION 02315

A. Section Includes: Stripping and storage of topsoil, excavating, importing fill material, placement of materials, grading, and other related work to prepare the site.

A. Unclassified Excavation: Shall consist of the material excavation and placement regardless of its nature.

B. Rock Excavation: Removal of material shall be considered rock excavation when it consists of igneous, metamorphic, and sedimentary rock which cannot be excavated with the use of a hydraulic excavator having a minimum operating weight of 50,000 lbs., with minimum net horsepower of 160.

C. Common Excavation: Removal of materials which can be excavated with the use of a hydraulic excavator having a minimum operating weight of 50,000 lbs., with minimum net horsepower of 160 or less shall be considered common excavation.

D. Muck Excavation: Shall consist of the removal and disposal of deposits of saturated or unsaturated mixtures of soils and organic matter not suitable for foundation material regardless of moisture content.

E. Fill Material: Shall be mineral soil free from peat, frozen material, brush, trees, roots over 2 inches in diameter and rocks over 6 inches in greatest diameter obtained from site during excavation.

F. Topsoil: Surface soil approximately 4 inches in depth that supports growth of vegetation and contains organic matter.

2.1 MATERIALS

A. General: See Work Sheet, “Mudsprings Campground Improvements-Materials Quantities” for estimated volumes of existing and imported material.

B. Fill Material: Shall be obtained from the common excavation. Material from excavation shall be used unless it contains ice or frozen earth, debris, high moisture content, or is specified in other sections to be replaced.

Topsoil shall not be used for fill or embankment.

C. Imported Fill Material: Shall be approved by the Contracting Officer prior to use. Imported fill material used in the construction of the parking areas and campsites shall meet the requirements of the Fill Material as

02315 - 2 stated above or meet the requirements for CDOT Class 6 aggregate as stated in Section 02730.

D. Imported Pit-Run Material: Shall meet the requirements for CDOT Class 3

Aggregate Base Course.

A. Clearing and Grubbing: Per Section 02231 - Clearing and Grubbing.

B. Stripping Topsoil: Strip and stockpile topsoil from the undisturbed portions of each campsite, picnic area, parking area that fall within the footprint of the proposed construction areas.

C. Placement of Topsoil: After completion of campsites, picnic areas, parking areas, water system, or other areas of work, evenly spread approximately 4”-6” of the stockpiled topsoil to disturbed areas and/or as a final lift of fill material over or adjacent to retaining walls, boulders, concrete, water system installation, or other areas of work within the sites of the proposed construction. In addition, place the topsoil within areas of demolition or scarification that fall outside of the footprint of the proposed work, and as directed by the Contracting Officer. See the drawings for estimated volumes of topsoil removed for each specific work area.

Topsoil shall be hauled, placed, and distributed throughout the site as needed. Excess topsoil shall be disposed of onsite if applicable

D. Scarifying: Scarify existing disturbed areas that fall outside the footprint of the proposed construction. Remove aggregate from the area to scarify prior to scarifying if applicable. The cleared surface shall be completely broken up by scarifying to a minimum depth of 4”-6”. Evenly place topsoil material over scarified areas as directed by the Contracting

E. Onsite Fill Material: Excess materials available after construction of campsites, picnic areas, and parking areas shall be used as fill material within other campsites or parking area construction, prior to using imported fill material.

3.2 INSTALLATION

A. Excavation: Excavate where shown on the drawings, unless staked otherwise.

Excavate on a straight grade between the control points shown on the drawings unless staked otherwise.

B. Subgrade Compaction: Compact existing subgrade prior to placement of material. Compact as specified in 3.3 A Compaction below, before placement of fill materials.

C. Fill Material/Imported Material: Shall be spread over the full width of the cross section of the embankment to a maximum loose thickness of 8 inches and shall be compacted as specified in paragraphs 3.3 A Compaction below, 02315 - 3 before the next layer is spread. The in-place materials shall be free of lenses, pockets, streaks, or layers of materials differing substantially in texture or gradation from the surrounding materials. See drawing for locations of required material.

D. Frozen Material: Shall not be placed, nor be placed upon a frozen surface.

3.3 FIELD QUALITY CONTROL

A. Compaction: Immediately following final spreading and smoothing, each layer shall be compacted full width. Compaction shall be accomplished by means of a vibratory roller compactor, minimum 48-inch drum width, and minimum 10,000 centrifugal force or approved alternative compaction method.

A minimum of three passes shall be made over the entire width of the area, and until the material visible stops compacting. Add or remove water when necessary to obtain optimum compaction.

A. Units: The work described in this section will be measured and paid for on a lump sum basis for the earthwork required for the construction of the parking areas, campsites, roadwork, and picnic areas. Payment includes existing and imported fill materials placed, compacted, and approved.

Volumes are calculated using the “Grading Volume Tools” in AutoCAD Civil 3d, Version 2020 and were measured from the existing ground surface to the finished grade subgrade surface, prior to placement of aggregate.

02315(1) Earthwork . . . . . . . . . . . . . . . . . . . Lump Sum

TRENCHING

02321 - 1

SECTION 02321

A. Section Includes: Trenching, backfilling, and compacting for the installation of a potable water line.

A. As per Section 02315.

A. General: Material excavated shall be considered unclassified.

B. Fill Material: Shall be approved before use. Material from excavations shall be used, unless it contains ice or frozen earth, debris, high moisture content, or is specified in other sections to be replaced. Backfill shall not contain rock larger than 3 inches in diameter.

C. Bedding: Shall be native material excavated during the trenching.

D. Buried Utility Line Marking Tape: Shall be 2” minimum width, specifically manufactured for marking/locating buried waterlines, blue in color with black text, stating “Caution Buried Waterline Below“ or similar.

Detectable with the use of a non-ferrous locator.

A. Trench Excavation: Locate all underground utilities prior to trenching.

B. Protection of Excavation: Construct and maintain shoring and/or bracing as necessary to protect the excavation.

C. Dewatering: Keep the excavation dewatered if necessary, so that pipe work can be carried on under dewatered conditions. Dispose of excess water by using natural drainageways near the work area to the extent of their natural capacity.

A. Trench Excavation: Shall be 30” average depth. Adjust depth as required for connections to tank and hydrant/spigots and for drainpipes when daylighted. The waterline shall always maintain a uniform grade for continuous gravity flow.

02321 - 2

1. When over-excavation occurs, backfill the low areas with approved materials and compact as per Section 02322.

2. When soil becomes saturated above the optimum moisture content, compact after it has dried, or remove soil down to firm material and place backfill before construction proceeds.

B. Bedding: Grade and compact bedding prior to placement of piping. Ensure the bedding always maintains a uniform grade for continuous gravity flow of water.

C. Trench Backfill: After testing and approval of the waterline, the trench backfilling shall be completed. Compact as per Section 02322.

D. Buried Utility Line Marking Tape: Place the marking tape approximately 8” directly above the waterline, from the water tank full length of the trench and to all spigots and hydrants.

EXCAVATION AND FILL FOR STRUCTURES

02322 - 1

SECTION 02322

A. Section Includes: Excavating, backfilling, and compacting for structures.

A. As per Section 02315.

1.3 QUALITY ASSURANCE

A. Failure Criteria: Not limited to the following:

1. Settlement of backfill which would allow moisture to pond against the foundation or within a horizontal distance from the foundation equal to its design depth.

A. General: Material excavated shall be unclassified. Backfill material shall be approved in writing before use. Material from excavations shall be used unless it contains ice or frozen earth, debris, earth with high moisture content, or is specified in other sections to be replaced.

Materials removed in clearing and grubbing shall not be used for backfill.

B. Bedding

1. Concrete Slabs: Compacted Class 6 Aggregate as per Section 02730.

2. Buried Water Tanks: As instructed by the Tank Manufacturer.

3. Precast Concrete Buildings: As instructed by the building manufacturer.

4. Culverts: Common Excavation as described in Section 02315.

5. Waterline: Common Excavation as described in Section 02315.

C. Backfill

1. Concrete Slabs: Common Excavation as described in Section 02315.

2. Buried Water Tank: As instructed by the Tank Manufacturer.

3. Precast Concrete Buildings: As instructed by the building manufacturer.

4. Culverts: Common Excavation as described in Section 02315.

5. Waterline: Common Excavation as described in Section 02315.

D. Geogrid: Integrally formed biaxial polypropylene with 1” Aperture dimensions and an ultimate tensile strength of 850 lbs/ft according to ASTM D4759-02. BX1100 as manufactured by Tensar International Corporation, www.tensarcorp.com, or approved equal.

02322 - 2

A. Clearing: Shall be according to Section 02231 - Clearing and Grubbing.

A. Bedding

1. Concrete Slabs: Place crushed aggregate to a minimum depth of 6” throughout the full area where the concrete is to be placed. Compact with the use of a mechanical vibratory place compactor with a minimum centrifugal force of 2250 pounds or other approved compaction equipment. Compact a minimum of three passes over the entire area of the lift, and/or until the material visibly stops compacting. Add or remove water as needed to achieve optimum compaction

2. Buried Water Tank: Place and compact bedding material according to the tank manufacturer’s instructions.

3. Precast Concrete Buildings: Place and compact bedding material according to the building manufacturer’s instructions.

4. Corrugated Metal Pipe(CMP): Prepare the subgrade under the CMP for the entire length and width of the CMP. Provide uniform slope with continuous support for each section of CMP. Compact the approved subgrade under the pipe prior to installing the pipe taking care as to keep the grade uniform.

5. Waterline: Grade the trench bottom throughout and provide uniform slope with continuous support for each section of pipe. Compact the bedding under the pipe prior to installing the pipe. Ensure the bedding will achieve positive drainage flow for the pipe when installed.

B. Excavation:

1. General: Perform excavation to the lines, grades, and elevations indicated to allow for safety, placing and removal of forms and inspection and as instructed by the product manufacturer if applicable.

Provide proper depth with allowance made for gravel fill and concrete slabs. When frost action occurs, remove frozen soil, and replace with approved soil, compacted according to the requirements for bedding.

2. Buried Water Tank: As instructed by the tank manufacturer.

3. Precast Concrete Buildings: As instructed by the building manufacturer.

4. Corrugated Metal Pipe (CMP): As per Section 02640.

5. Waterline: As per Section 02321.

C. Backfilling

1. General: Items shall be placed on approved bedding material prior to backfilling.

2. Buried Water Tank: As instructed by the tank manufacturer.

3. Precast Concrete Buildings: As instructed by the building manufacturer.

02322 - 3

4. Corrugated Metal Pipe (CMP): As per Section 02640.

5. Waterline: Place fill material in 8” maximum lifts and compact thoroughly prior to placing the next lift. Compact as per 3.3 A.

D. Geogrid: Install geogrid as instructed by the manufacturer and according to the drawings and within the pit run fill material at Campsite #6.

3.3 COMPACTION

A. General: Immediately following final spreading and smoothing, each lift shall be compacted full length and width. Compaction shall be accomplished with the use of a mechanical rammer compacter (Jumping Jack) or approved compaction equipment. Compact a minimum of three passes over the entire area of the lift, and/or until the material visibly stops compacting. Add or remove water as needed to achieve optimum compaction.

B. Corrugated Metal Pipe: As per Section 02640.

DISINFECTION OF WATER DISTRIBUTION

GAOA-Mudsprings Campground Improvements [02/21]

02512 - 1

SECTION 02512

A. Section Includes: The disinfection of the water system.

1.2 SUBMITTALS

A. General: Submittals shall be according to Section 01009 - General Information and Requirements.

B. Sample Results: Submit 1 electronic copy for each of the laboratory’s water sample results. Submit within 24 hours of getting the results from the laboratory.

C. Testing Laboratory: The contractor shall submit the name, phone number, and address of the laboratory to be used for testing the water samples.

Laboratory shall be certified with the CDPHE.

1. Contractor shall be responsible for payment to laboratory for analysis of all water samples, however Government personnel shall deliver samples to lab after contractor sample collection as stated below in 1.3, A.

1.3 PROJECT RECORD DOCUMENTS

A. Water Samples: After disinfection of the water system and flushing of the tank and waterlines of residual disinfectant, fill the system with water.

The contractor shall take water samples to test for total coliform bacteria.

If applicable, repeat disinfection and sampling until system tests negative for total coliform bacteria. Samples shall be taken in sealed containers supplied by a CDPHE certified testing laboratory. Location for water sampling shall be from the frost-free hydrant and each ADA Self Closing spigot. Samples shall be taken in the presence of the Contracting Officers Representative and/or approved Government personnel. After collection of samples, supply samples, including container or cooler as recommended by laboratory for transport of samples, to government representative for delivery to approved laboratory for testing. Samples shall be collected as instructed by the laboratory, and at a minimum include the following:

1. Date issued, project name, and testing laboratory name, address, and telephone number.

2. Time and date of water sample collection.

3. Name of person collecting samples.

4. Test location.

A. Sodium Hypochlorite (Bleach): Shall be new, NSF certified, unscented bleach, minimum 6.25% Sodium Hypochlorite according to AWWA B 300.

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3.1 APPLICATION

A. Disinfection: Disinfect the water distribution system as follows:

1. Verify valve immediately downstream of tank is closed.

2. While tank is being filled with water, add 1 gallon of unscented bleach, fill tank until full. Monitor water levels in tank and when full, in “Valve Box 1”, divert water from entering the tank via the “Winter Bypass” waterline. Allow chlorinated water to remain in tank for a minimum of 2 hours.

3. Verify frost-free hydrant is in the closed position, all ADA Self Closing Spigots are closed, and all drain valves are closed. In “Valve Box 2” verify the curb valve for the tank drain is closed and open the curb valve to fill the distribution system with chlorinated water. In “Valve Box 3” verify all curb valves are in the open position, open hydrant and ADA Self Closing Valves until chlorinated water flows, then close.

4. Allow disinfectant to remain in the system for a minimum of 4 hours.

5. After disinfectant has been in the system for 4 hours or longer, drain the chlorinated water from the tank and waterlines.

B. Water Sampling: After disinfection of the water system is complete, fill the tank and distribution system with potable water as described in Section 02514. Take water samples as described above in 1.3, A. Repeat disinfection if bacterial samples test positive.

SITE WATER DISTRIBUTION

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SECTION 02514

A. Section Includes: Furnishing and installing items for a potable water system from an artesian well.

B. Water Tank: Submit one copy of the NSF certified tank data, including buried tank installation instructions.

1. Evidence of leakage

2. Malfunctioning valves

3. Blockage of piping

4. Contamination of water, rendering it not potable

5. Pressure drop

B. Labeling Requirements: Polyvinyl Chloride (PVC) and polyethylene

(PE) plastic pipe and fittings shall carry the National Sanitation Foundation (NSF) seal of approval when used in potable water systems.

C. Regulatory Requirements: Comply with standards for potable water piping and plumbing systems, including materials, installation, testing, and disinfection.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Pipe: Deliver pipes and tubes with factory-applied endcaps.

The interior of pipe/fittings shall be protected to prevent dirt or foreign material from entering, and thoroughly cleaned of foreign material prior to connections if applicable.

B. Tank: Deliver, haul, and offload, buried tank per tank manufacturer’s instructions.

2.1 MATERIAL

A. General: All piping, fittings and methods for connections shall be compatible for a potable water system.

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B. High-Density Polyethylene Pipe (HDPE): NSF-61 Certified pipe, 200 PSI minimum, either Pure-Core meeting ASTM D2239 and AWWA C901 or HDPE SDR 11 OD Controlled Fusion Weld meeting ASTM D3035 and AWWA C901. The same pipe shall be used throughout.

C. Fittings/Adapters:

1. Fittings for Pure-Core Pipe: Mueller 110 Conductive

Compression Connection for CTS O.D. tubing. Fittings shall be used at connections as intended by manufacturer.

2. Fittings for Fusion Welded HDPE: CEPEX Polypropylene compression fittings specifically designed to be used for outside diameter controlled fusible HDPE pipe. Fittings shall be used at connections as intended by manufacturer.

3. General: Fittings required to connect HDPE pipe to flanges, tank, valves, hydrants, or other fittings shall be designed for potable water use. Use fittings as intended by manufacturer. Use the minimal number of fittings possible for connections.

D. Curb Valve/Curb Box: Valve shall be 1-1/2” Brass, Mueller Mark II

Oriseal or approved qual. Curb box shall be extension type, and capable of extending from the valve/waterline to near the finished grade surface as shown on the drawings. Curb key shall be as recommended by the valve manufacturer, and compatible for use within the curb box. Rod length shall be as close to the final length of the curb box as feasible. Curb box shall include a cast-iron one-piece lid and tool required for opening/closing lid.

E. Air Release Valve: NSF 61 Certified for drinking water, minimum working pressure 5 psi, maximum working pressure 175 psi. Cast- Iron, Stainless-Steel Brass, or PE housing with minimum 1” inlet maximum 2” inlet. Install piping and fittings as needed for downward facing outlet vent if applicable. Install #24 mesh non-corrodible screen on end of outlet vent if applicable.

F. Hose Connection Vacuum Breakers: Lead free brass or nickel plated, self-draining vacuum breaker, Arrowhead 59 APB or approved equal.

G. Hydrant: Sanitary yard hydrant, frost free. Minimum 69-inch total length, Murdock M-3904 or approved equal.

H. Fiberglass Storage Tank: Tank shall be fiberglass, 1000 gallon capacity, 4 foot diameter. Tank shall comply with NSF Standard 61 requirements for potable water. Tank shall be constructed with a 2” reinforced nozzle inlet near the top of one end of the tank, a 2” reinforced nozzle outlet at one bottom of the opposite end of the tank, and a 2” reinforced outlet(overflow)near the top of the tank on the drain end of the tank. Tank shall have a factory green Gel-coated 30” diameter x 48” manway with a hinged lockable gasketed lid, and shall have 2, 4” NPT half couplings constructed into the tank top for installation of a fill pipe and vent pipe.

Tank shall include a precast concrete anchoring (deadman) system

02514 - 3 with hold down straps as recommended and supplied by the manufacturer. Tank shall be as manufactured by Xerxes Corporation, 7901 Xerxes Avenue, Suite 201, Minneapolis, MN 55431, 952-887-1890, www.xerxescorp.com or approved equal. Alternate tanks shall meet or exceed all the salient dimension and design criteria and strengths of the specified tank. See drawing “Water Tank Details” for additional information.

I. Cam Lock: 4” Male aluminum cam lock, with 4-inch female Aluminum

Dust Cap with Locking Arms and FDA approved Buna-N Camlock Gasket, Type DC, Cap Connection Type 20139443 or approved equal.

J. Air Vent for Tank: As shown on the drawings.

K. Valve Box: HDPE, rectangular valve box with overlapping cover.

Top dimensions of box shall be approximately 16” x 12”. Height of valve box shall be 12”.

L. Geo-textile Fabric: 6-ounce non-woven geo-textile fabric, 160 lbs.

grab tensile strength, 65 lbs. trapezoid tear strength.

3.1 WATERLINE INSTALLATION

A. General: All materials used in the water system shall be compatible for potable water systems. The pipe shall not be covered until it has been checked for leaks, except for the section of roadway that is required to be kept open as described in Section 02322.

B. Waterline Installation: Construct as shown on the drawing, and as recommended by the appropriate manufacturer. Install the curb valve with curb box and rod as shown on the drawings. Install brass nipples on each side of the curb valve with adequate length to extend outside of the curb box. Install a union on the downstream side of each curb valve/nipple as shown on the drawings.

C. Depth: Bury piping at minimum depth of 30 inches below finished grade and as needed to gravity flow.

D. Hose Connection Vacuum Breaker: Install on hydrant at a 45-degree angle to level ground as instructed by manufacturer.

E. Hydrant: Install according to manufacturer’s instructions, and as shown on the drawings.

F: Fiberglass Storage Tank: Install as instructed by the tank manufacturer and as shown on the drawings.

G. Cam lock/Air Vent: Install as shown on the drawings and as instructed by the manufacturer(s).

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H. Valve Box: Install as shown on the drawings and at the curb box locations.

I. Geo-textile Fabric: Install the fabric between the primary and secondary fill materials as instructed by the tank manufacturer.

Install fabric at the hydrant location as shown on the drawings.

A. Units: The work described in this Section will be measured and paid for on a lump sum basis.

02514(1) Water System . . . . . . . . . . . . . . . . . . . . Lump Sum

CULVERTS

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SECTION 02640

A. Section Includes: Installing Contractor-furnished culverts/corrugated metal pipe (CMP).

1.2 QUALITY ASSURANCE

1. Breaks in outer coating or spelter.

2. Deformed, broken, or chipped culvert pipe.

A. Corrugated Metal Pipe: ASTM A 760/A 760M, Type I for circular pipe.

Minimum width of coupling bands shall be 12 inches.

a. CMP@ Campsite #3 – 12” x 24’

b. CMP@ Campsite #7 – 8” x 16’

c. CMP@ Campsite #14 – 12” x 40’

B. Connecting Bands, Nuts and Bolts: The type, size, and sheet thickness of band shall be as recommended by the pipe manufacturer.

C. Bedding: Shall be prepared and compacted native soils. Remove all rocks larger than 3” from bedding area that will come in contact with the CMP.

D. Backfill Material: Shall be a combination of native soils adjacent to the

CMP installation locations and aggregate materials as described in Section 02730.

A. Excavation: Section 02322 - Excavation and Fill for Structures.

A. Installing Culvert: Install CMP’s at the locations and at the approximate elevations as shown on the drawings or as determined in the field. CMP’s shall remain in contact with the bedding material throughout the installation. Install CMP’s in a straight line when two or more sections are joined. Install the CMP at 2% steeper grade than the inlet of the drainage or as instructed by the Contracting Officer.

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B. Joining Conduits: Use the manufacturer's recommended method of joining culvert sections. No backfill shall be placed prior to approval of the Contracting Officer. Remove and replace damaged pipe at Contractor's expense.

C. Bedding: Grade and compact bedding prior to placement of CMP. Bedding shall be approved by the Contracting Officer prior to placement of CMP.

D. Backfill: Backfill material shall be placed under the haunches and alongside the pipe in layers not exceeding 8-inches in depth and compact thoroughly prior to placing the next lift. The CMP shall remain in contact with the bedding material throughout the installation. Place backfill a minimum of 6” over the CMP, minimum, prior to placement of aggregate surfacing material. Compact as per 3.2 E.

E. General: Immediately following final spreading and smoothing, each lift shall be compacted full length and width. Compaction shall be accomplished with the use of a mechanical rammer compacter (Jumping Jack). Compact a minimum of three passes over the entire area of the lift, and/or until the material visibly stops compacting. Add or remove water as needed to achieve optimum compaction.

A. Units: The culvert will be measured and paid for each CMP, installed, and accepted, including bedding and compaction.

A. Payment: Payment will be made under:

02640(1) CMP Installations . . . . . . . . . . . . . . . . LS

AGGREGATE SURFACING

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SECTION 02730

A. Section Includes: This work shall consist of placing and compacting contractor furnished crushed aggregate surfacing material on a prepared roadbed, parking areas and campsites and picnic areas.

PART 2: MATERIALS

2.1 GENERAL REQUIREMENTS

A. Imported Crushed Aggregate for Road and Parking Areas: Aggregate shall consist of hard, durable particles or fragments of stone or gravel, crushed to the size and of the quality requirements for crushed aggregate materials normally used locally in the construction and maintenance of highways by Federal or State agencies and shall be according to AASHTO M 147. The aggregates comply with Colorado Department of Transportation (CDOT) Class 6.

B. Aggregate for Road and Parking Areas: A materials compliance submittal verifying the aggregate meets CDOT Class 6 shall be supplied prior to placing any material. Aggregate shall be supplied from a commercially operated sand and gravel supplier and shall meet the CDOT Class 6 requirements from existing stockpiled material. Mixing of additional material(s) by the contractor to bring out of specified material into compliance shall not be allowed. Weighing of material shall be performed by an employee of the sand and gravel supply company. Weight tickets shall include the company supplier name, ticket number, project name, gross weight, tare weight, net weight, and time and date at time(s) of weighing for each truck load of material. Tare weight(s) of trucks shall be required on every load of aggregate supplied.

C. Trail Mix Aggregate: Aggregate shall consist of decomposed granite specifically used for the purpose of trail construction, tan in color, crushed to 1/4” minus and shall include crusher fines for the purpose of binding the material upon compaction.

3.1 CONSTRUCTION REQUIREMENTS

A. Preparation: Prior to placing aggregate, the existing roadbed, ADA trail, parking areas, campsite parking areas and picnic areas shall be bladed and shaped to reasonably close conformity with the line, grade, and cross sections for subgrade as shown on the drawings or established by the Contracting Officer. Ditches as shown on the

02730 - 2 drawings shall be cut as directed by the Contracting Officer and as needed to collect water for diversion into culverts (CMP’s). At intersections between roadways, parking areas, and campsite parking areas, shape to best provide for proper joining of the proposed and existing riding surfaces and as needed to divert water off the roadway and away from parking areas if applicable.

B. Placing: The material shall be placed on the prepared surface in a single layer and spread and compacted finished depth.

C. Class 6 Aggregate: Compacted finished depth shall be 6”.

1. Placing shall be from vehicles equipped to distribute the material in a uniform layer or windrow. The layer or windrow shall be such size that when spread and compacted, the layer shall have the required thickness.

2. When hauling is done over previously placed material, hauling equipment shall be routed as uniformly as possible over the entire width of previously constructed layers.

D. Trailmix Aggregate: Compacted Depth for picnic areas shall be 4”, compacted depth for ADA Trail and Campsite #7 shall be 6”.

1. The material shall be placed on the approved finished subgrade and spread evenly over the applicable subgrade to the depths listed above.

E. Compacting: As per Section 02315 3.3 A.

F. Thickness Requirements: The thickness of the completed course shall not…