A06 Specifications.pdf

Cottonwood Trailhead Improvements Table of Contents - 1

COTTONWOOD TRAILHEAD IMPROVEMENTS

TECHNICAL SPECIFICATIONS

DIVISION 1 – GENERAL REQUIREMENTS Page # Section 01010 - Summary of Work Section 01019 - Government-Furnished Property Section 01330 - Submittal Procedures Section 01458 - Testing Laboratory Services Section 01505 - Mobilization Section 01900 - Measurement and Payment

DIVISION 2 – SITE CONSTRUCTION

Section 02031 - Clearing and Grubbing Section 02310 - Site Grading Section 02315 - Excavation and Fill Section 02322 - Excavation and Fill for Structures Section 02339 - Watering Section 02722 - Crushed Aggregate Base Course Section 02824- Wire Fences Section 02825 - Wood Fences Section 02930- Exterior Plants……………………………………………………………………….02930

DIVISION 3 – CONCRETE

Section 03306 - Concrete

DIVISION 10 – SPECIALTIES

Section 10100 - Prefabricated Toilet Building

CONSTRUCTION DRAWINGS

Sheet T1 - Title Sheet Sheet C1- Existing Site Plan Sheet C2 - Proposed Site Plan Sheet C3 - Grading Plan Sheet C4 - Plan & Profile Sheet D1 - Typical Details Sheet D2 - Typical Details Sheet D3 - Typical Details Sheet D4 - Typical Details

RELATED DOCUMENTS

Romtec Restroom Plan Set

Cottonwood Trailhead Improvements Summary of Work 01010 - 1

SECTION 01010

SUMMARY OF WORK

PART 1: GENERAL

1.1 COTTONWOOD TRAILHEAD IMPROVEMENTS SUMMARY

A. Description of Work: Furnishing labor, equipment, supplies, and materials, except for specified Government-furnished property. Demolish existing site, improve and increase parking area, construct the foundation and concrete slab for a vault toilet and complete the construction of a vault toilet from a “kit” (government-furnished), relocate existing kiosk and signs, install new signs, fencing, and other government-furnish amenities as shown on drawings including:

1. Installing Tortoise fencing as shown on drawings and specifications;

2. Clearing, grubbing, and erosion control(SWPPP);

3. Demolition of existing vault toilet, fencing, gates and stepover

4. Grading and subgrade preparation;

5. Installation of government-furnished wood fence;

6. Installation of gate and government furnished step over;

7. Installation and/or relocation of government-furnished signs;

8. Installation of government-furnished vault toilet from a kit;

9. Construction of concrete pad;

10. Relocation of existing kiosk;

11. Installation of government-furnished register/brochure pedestal, bike rack and bike repair station;

12. Installation of aggregate base course;

13. Construction of concrete pavement as shown on drawings;

B. Location: Work under this Contract is located in Washington County, Utah. Traveling on

I-15, take Exit 16 to State Hwy 9 towards Hurricane. In approximately one mile, turn left (north) at the traffic signal onto Old Hwy 91 (across from Telegraph Road). Proceed roughly 2 miles past townhomes and industrial park facilities. Turn left (west) at a small, brown trailhead sign off the left side of the road between the Winkle Distribution building (Coors Light) and the Rocky Mountain Power building and ware yard on a difficult to see dirt/gravel road, using the driveways of either building for access. Proceed through two I-15 underpasses (limited height and width) and find the trailhead within 50 yards.

C. Time of Contract: 60 Calendar days from Notice to Proceed

D. Anticipated Period of Construction: October 21st, 2020 – December 19th 2020.

1.3 REFERENCES

A. Romtec Plan Set

1.4 QUALITY ASSURANCE

Cottonwood Trailhead Improvements Summary of Work 01010 - 2

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 if 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.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Delivery: Protect products incorporated into the work from damage while in transit to the site.

B. Storage: Provide temporary storage facilities for products. Storage shall comply with the manufacturer's instructions. The storage area shall permit access for inspection and handling.

C. Handling: Load and unload products in such a manner that protects them from damage.

1.6 PROJECT AND SITE CONDITIONS

A. Access to the Work: Operations shall be scheduled so that work is done during daylight hours, Monday – Friday. Work on Saturday or Sunday shall be requested in writing to the CO and is not guaranteed.

B. Environmental Considerations: Fuel or oil spills occurring during the work of this project shall be excavated to a depth of 12 inches beyond contaminated material and removed from the work location. Prescribed measures to prevent water pollution to nearby water resources shall be strictly observed.

C. SWPPP(Storm Water Pollution Prevention Plan): Disturbance area is greater than 1 acre requiring a Utah General Construction Permit and SWPPP. The contractor shall obtain all needed permits and comply with requirements of the SWPPP.

D. Public Access: Provide temporary signage and traffic control to keep the public out of work zones. BLM will release a news release for the closure of the site during construction.

Coordinate with the COR to schedule an official time when the public will have access to the site.

1.7 SEQUENCING AND SCHEDULING

Requirements:

A. Tortoise Monitoring: The work is occurring within habitat critical for the survival of the Mojave Desert Tortoise. To protect Desert Tortoises from harm as a result of construction activities all contractor and subcontractor employees working on-site shall receive tortoise education training. This training will be provided by the BLM prior to commencement of any work and is expected to take 30 minutes. In addition, the government will have a biological monitor on-site as needed and determined by the monitor.

Cottonwood Trailhead Improvements Summary of Work 01010 - 3

The exterior tortoise mesh fencing surrounding the project must be installed prior to any construction activities. If any work is needed prior to the tortoise mesh installation in areas not enclosed by tortoise fence a biological monitor must be on-site at all times. Existing trailhead parking has existing tortoise mesh fencing. Contractor may leave this in place as needed during construction.

B. Planting: Coordinate delivery of government-furnished container-grown plants with COR to reduce on-site storage time. Container-grown plants shall be delivered by the government prior to placement. If planting is delayed more than 24 hours after delivery, protect from weather, mechanical and animal damage, and keep roots moist. Do not remove container-grown plants from containers before planting.

Coordinate the work of this section with other site work including scarification. Plant in the appropriate sequence of work to ensure protection of plants and planting area.

1.8 UTILITY CONNECTIONS

A. Requirements: None applicable for this contract.

1.9 GEOTECHNICAL DATA

A. Geotechnical Report: None available for this contract.

PART 2: PRODUCTS

There are no applicable requirements.

PART 3: EXECUTION

3.1 PROJECT MEETINGS

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

1. Be prepared to summarize and explain procedures planned for the project and present the submittals requested in the specifications.

B. Tortoise Education Training: Will be held prior to the start of any work. The Contractor shall require all employees and subcontractors are on site for training. The Training will be provided by the BLM prior to the commencement of any work and is expected to take 30 minutes.

C. Progress Meetings: May be requested by either the COR or the Contractor. The request shall state who should attend and include an agenda.

D. Final Inspection: Notify the COR in writing at least five working days before the completion date, so the Government can schedule final inspection.

Cottonwood Trailhead Improvements Summary of Work 01010 - 4

3.2 PREPARATION

A. Work Layout: The government will provide information to the Contractor to establish the location of work. The Contractor shall notify the COR at least 48 hours in advance of where work will take place so that proper location and grade stakes can be provided.

3.3 PROJECT MONUMENT

A. Requirements: None apply to this contract.

3.4PROTECTION

A. Damage: Repair of damage to new or existing construction and equipment resulting from construction procedures, shall not be initiated prior to notification of the Contracting Officer.

B. Repairs: Repair damages to new or existing active utility above or below ground, whether indicated on the drawings or not, and immediately report such damage to the Contracting Officer. Costs of repair for damages due to the Contractor's negligence shall be paid by the Contractor. The Contractor is required to call Blue Stakes prior to any excavation.

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

Cottonwood Trailhead Improvements Government-Furnished Property 01019 - 1

SECTION 01019

GOVERNMENT-FURNISHED PROPERTY

1.1 SUMMARY:

A. Section Includes: Materials to be furnished by the Government and their locations.

1.2 DELIVERY, STORAGE, AND HANDLING:

A. Location: The Government-furnished property will be available for pick up at the Bureau of

Land Management, Brigham Yard, 359 East Brigham Road, St. George, Utah.

B. Time: Property will be available Monday through Friday, 7:00 AM – 4:00 PM, except on holidays. This is a secure, unstaffed storage facility. Property pickup by the contractor must be arranged in advance through the COR.

C. Return of Unused Property: Return unused material to Bureau of Land Management, Brigham

Yard, 359 East Brigham Road, St. George, Utah. Property drop off must be arranged in advance through the COR.

D. Loading, Offloading and Transporting Property: BLM will be responsible for providing the necessary material-handling equipment to load or offload materials. The Contractor shall transport materials to work site.

2.1 MATERIALS:

A. Materials to be furnished by the Government:

Specification Materials Estimated Section Description Quantity Unit Section 10100, Rometc Vault Toilet Kit 1 EA Manufactures Specs Bike Rack 1 EA Manufactures Specs Bike Service Station 1 EA Construction Drawings Registration Pedestal 1 EA Construction Drawings Maintenance Sign 1 EA Construction Drawings 3’ Tortoise Mesh 1522 LF Construction Drawings Post & Pole Fence 2680 LF Construction Drawings Steel Step-Over 1 EA Construction Drawings Container Grown Plant 500 EA

Existing items to be relocated Construction Drawings Kiosk 1 EA Construction Drawings No Camping Sign 1 EA

Cottonwood Trailhead Improvements Government-Furnished Property 01019 - 2

2.2 EQUIPMENT:

A. Equipment to be Furnished by the Government: None

PART 3: EXECUTION

There are no applicable requirements.

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. The

Contractor shall include consideration for this item in the bid price for other items of the Contract.

Cottonwood Trailhead Improvements Submittal Procedures 01330 -1

SECTION 01330

SUBMITTAL PROCEDURES

1.1 SUMMARY

A. Section Includes: Requirements for submittals of the work schedules and required material testing.

B. Requirements: Refer to specifications for submittals required. Allow 2 working days for review. Review time commences upon receipt by the COR. Submittals shall be delivered to the COR.

Kenzie Johnston 176 East DL Sargent Dr Cedar City, UT 84721 mjohnston@blm.gov

1.2 QUALITY ASSURANCE

A. Approval: Written approval of the submittals is an indication that the Contractor's submittals have been reviewed and that there are no objections, except as noted. Installation of material on the basis of written approval of submittals shall not relieve the Contractor of the responsibility for incorporating material which conforms to the requirements of the drawings and specifications. Written 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 written approval of an item, the Contractor may submit a substitution for approval, if the approved item cannot be purchased or delivered in time to avoid delay in completion of the project.

3.1 WORK SCHEDULE:

A. Requirements: The schedule shall be submitted at the pre-work conference. When requested, the Contractor shall submit an updated schedule within three calendar days. As a minimum, the estimated start and completion dates should be shown in the schedule.

3.2 VALUE SCHEDULE

3.3 DESIGN COMPUTATIONS

mailto:mjohnston@blm.gov

Cottonwood Trailhead Improvements Submittal Procedures 01330 -2

3.4 SHOP DRAWINGS AND MANUFACTURER'S LITERATURE

A. General: The Contractor shall deliver to the Contracting Officer the shop drawings and manufacturer's literature required by the specification sections in this Contract to the Contracting Officer.

B. Identification: When full catalogs or pages and tables are submitted, the specific items to be used on this project shall be circled, blocked in or underlined. Completely identify each submittal by showing the following information:

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

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

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.

C. Substitutions: The Contractor shall present requests for substitutions to the COR according to the following:

1. Deliver sufficient calculations and data to justify selection of the proposed item and permit comparison with the original item.

2. Show complete layout of system, except that which is identical to Contract documents, unless unchanged portion must be shown to indicate clearances.

3. Include drawings, same (or larger) scale as Contract drawings, marked to show differences.

4. Submit complete technical data including test data, drawings, manufacturer's literature, samples, and complete performance specifications.

5. The Contractor is responsible for the cost of redesign and modifications to this or other parts of the project caused by the substitutions.

3.5 SAMPLES

Cottonwood Trailhead Improvements Testing Laboratory Services 01458 - 1

SECTION 01458

TESTING LABORATORY SERVICES

A. Section Includes: Requirements for the Contractor to engage a qualified, independent testing laboratory to conduct specific tests where the Contractor is required to do so in this contract.

1.2 SUBMITTALS

A. Test Reports: The Contractor shall provide 1 copy of test reports to the COR. Reports shall include testing facility name, address, telephone number, and names of full-time responsible officers.

1.3 QUALITY ASSURANCE

A. Approval of Laboratory: The qualified, independent testing laboratory, which will be conducting the specific tests required in this contract, must have authority or be licensed to operate in the State in which the project is located. The testing laboratory shall be approved by the Contracting Officer prior to the Contractor beginning work.

B. Responsibilities of Laboratory:

1. Test samples of mixes submitted by the Contractor.

2. Provide qualified personnel at project site. Cooperate with the Contracting Officer and

Contractor in performance of services.

3. Perform specified sampling and testing of products and materials in accordance with specified standards.

4. Ascertain compliance of materials and mixes with requirements of specifications.

5. Promptly notify the Contracting Officer and Contractor of observed irregularities or non-conformance of work, products, or materials.

6. Perform additional tests required by the Contracting Officer.

7. Attend preconstruction meetings and progress meetings.

C. Limitations on Laboratory:

1. Laboratory may not release, revoke, alter, or enlarge on requirements of specifications.

2. Laboratory may not approve or accept partial portions of the work.

3. Laboratory may not assume duties of the Contractor unless approved in writing by the

Contracting Officer.

1.4 SEQUENCING AND SCHEDULING

A. Establishing Testing Schedule:

1. By advance discussion with the testing laboratory, determine the time required for the laboratory to perform its test and to issue its findings.

2. Provide required time within the construction schedule.

B. Revising Testing Schedule: When construction schedule changes are necessary during construction, coordinate such changes with the testing laboratory as required.

Cottonwood Trailhead Improvements Testing Laboratory Services 01458 - 2

A. Reports shall include:

1. Date issued.

2. Project title and number.

3. Name of inspector.

4. Date and time of sampling or inspection.

5. Identification of product and specification sections.

6. Location in the Project.

7. Type of inspection or test.

8. Date of test.

9. Results of tests.

10. Conformance with Contract Documents.

B. Interpretation: When requested by the Contracting Officer, provide interpretation of test results.

3.1 FIELD QUALITY CONTROL

A. Contractor Requirements: See individual specifications "Field Quality Control" paragraph for specific testing requirements. When applicable, the Contractor shall:

1. Deliver to agency or laboratory at designated location, adequate samples of materials proposed to be used which require testing, along with proposed mix designs.

2. Cooperate with laboratory personnel, and provide access to the Work.

3. Provide incidental labor and facilities:

a. To obtain, handle, and label or identify samples at the site or at source of products and materials to be tested.

b. To facilitate tests.

c. To provide storage and curing of test samples.

4. Ensure samples are taken by qualified testing personnel.

5. Coordinate the laboratory test frequency and timing with the Contracting Officer.

6. Ensure tests are completed according to the testing schedule.

7. Furnish test reports within 2 working days after tests have been completed.

3.2 REQUIRED TESTING

A. Road and Parking subgrade(native):

Item Location Reference Frequency Remarks

Subbase source AASHTO T 99 1/source moisture/density Or T180 D relationship-proctor

Subbase random AASHTO T 310 1/5000 sq ft in-place density and pattern moisture content

Cottonwood Trailhead Improvements Testing Laboratory Services 01458 - 3

B. Road and Parking Aggregate Base:

Item Location Reference Frequency Remarks

Aggregate source AASHTO T 99 1/source moisture/density Or T180 D relationship-proctor

Aggregate random AASHTO T 27 1/source sieve analysis

Aggregate random AASHTO T 310 1/5000 sq ft in-place density and pattern moisture content

*see Section 02722 Aggregate Base for additional requirements/testing

C. Structural Fill:

Item Location Reference Frequency Remarks

Subbase/ structure AASHTO T 99 1/source moisture/density Aggregate or ASTD 1557 relationship-proctor

Subbase/ structure AASHTO T 310 1/per structure in-place density and Aggregate or 1/500 sq ft moisture content D. Concrete:

Item Location Reference Frequency Remarks

Concrete source Portland Type IIa 1 mix design

Concrete on site ASTM C 143 1/batch slump

Concrete on site ASTM C 231 1/batch air content

Concrete on site Measured 1/batch temperature

Concrete on site ASTM C 143 1/50 CY strength or per day

E. Mortar and Grout:

Take and test samples of mortar and grout according to ASTM C 91 for conformance with specified strength requirements.

Cottonwood Trailhead Improvements Testing Laboratory Services 01458 - 4

Cottonwood Trailhead Improvements Mobilization 01505 - 1

SECTION 01505

MOBILIZATION

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 2: PRODUCTS

(There are no applicable requirements.)

PART 3: EXECUTION

(There are no applicable requirements.)

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 Contract amount, whichever is lesser, will be paid.

2. When 10% of the original Contract amount is earned from other bid items, 100% of the amount bid for mobilization or 10% of the original Contract amount, whichever is lesser, will be paid.

3. Upon completion of work for the project, payment of the amount bid for mobilization in excess of 10% of the original Contract amount, will be paid.

4. 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.

4.2 BASIS OF PAYMENT:

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

Pay Item Description Pay Unit 1 Mobilization Lump Sum

Cottonwood Trailhead Improvements Measurement & Payment 01900 - 1

SECTION 01900

MEASUREMENT AND PAYMENT

PART 1 - GENERAL

1.1 MEASUREMENT & PAYMENT

A. Measurement and payment for contract work will be made only for and under those pay items included in the BID SCHEDULE. All other work and materials will be considered as included in the payment for items shown.

1.2 METHODS OF MEASUREMENT

A. General: The method of measurement and computations to be used in determination of quantities of material furnished, and Work performed under the Contract, will be those methods generally recognized as conforming to good professional practices.

When items of improvement, equipment, or service are shown on the plans and/or called for in the specifications for the Contractor to furnish, install, or provide, the items of work shall be measured and paid for in one of two ways. First, if the item of work is considered incidental to other items in the Bid Schedule, no separate measurement and payment shall be made and no separate bid item in the Bid Schedule will appear. In this case, measurement and payment for this Work shall be included by the Contractor in other bid items on the bid schedule. Second, when shown separately on the bid schedule, the item of work may be measured as called for in the specifications and paid for at the contract unit price for that Work.

1.03 UNITS OF MEASUREMENT

A. General: All work completed under this Contract will be measured by U.S. standard measure for the units described herein. Work performed by the Contractor will be measured in those units in accordance with the procedure described herein.

1. Lump Sum: The term “lump sum” when used as a unit of measurement for a structure or separate component of a structure shall include all work necessary to complete that entire structure or component, including all necessary fittings and accessories delineated by the pay limits as shown on the Drawings. If no pay limits are shown on the Drawings, then the structure or component shall include all fittings and accessories within 5-feet of the item.

2. Linear Foot: All Work measured by the linear foot shall be measured parallel to the centerline. For water and gas piping, no deduction will be made for valve, fittings, or carrier pipe. For sewer collection piping, measurement shall be to the inside surface of connecting manholes. Piping connected to structures, except headwalls, shall be measured to a point five (5) feet outside of that structure, unless indicated otherwise on the Drawings.

A station, when used as a unit of measurement, will be 100 feet.

Cottonwood Trailhead Improvements Measurement & Payment 01900 - 2

Items measured by the linear foot, such as pipe culverts, guardrail, under-drains, etc. will be measured parallel to the base or foundations upon which structures are placed

The thickness of plates and galvanized sheet used in the manufacture of corrugated metal pipe, metal plate pipe culverts and arches, and metal cribbing will be specified and measured in decimal fractions of inches.

3. Area: Area computations will be made from actual horizontal and transverse measurements made on the site of the Work.

Structures will be measured to the neat lines shown on the plans or as altered to fit site conditions.

Lumber will be measured by the thousand feet board measure (M.F.B.M.) actually incorporated in the structure. Measurement will be based on nominal widths and thickness and extreme length of each piece.

4. Volume: In computing volumes of excavation, the average end area method will be used unless the Consultant and Contractor agree, in writing, to an alternate method.

Materials to be measured by volume or by load count shall be hauled in approved vehicles and measured at the point of delivery. Vehicles for this purpose may be of any size or type, provided the body is shaped so the actual volume may be readily and accurately determined.

When liquid bituminous materials are measured by the gallon or ton, volumes will be measured at 60 degrees F, or will be corrected to the volume of 60 degrees F, using ASTM D 1250 for asphalt or ASTM D 633 for tars. When bituminous materials are shipped by truck or transport, net certified weights or volume subject to correction for loss or foaming, may be used for computing quantities.

5. Weight: The term “ton” will mean the short ton of 2,000 pounds avoirdupois.

When measurement units require weighing materials for payment, the Contractor shall be responsible for providing weight measurement from commercial certified scales or from scales provided at the job site that are certified in the state wherein the Work is located.

Cement will be measured by the ton or hundredweight.

a. Conversion of Weight to Volume: When requested by the Contractor and approved by the CO in writing, materials specified to be measured by the cubic yard may first be weighted and the weight converted to cubic yards for payment purposes. Factors for conversion from weight measurement to volume measurement will be determined by the CO and agreed to by the Contractor before this method of measurement of quantities is used.

6. Specific Manufactured Items: When standard manufactured items are specified; such as fence, wire, plates, rolled shapes, pipe conduit, etc. and these items are identified by gauge, unit, weight, section dimensions, etc. such identification will be considered to be nominal weights or dimensions. Unless more stringently controlled by tolerance in cited

Cottonwood Trailhead Improvements Measurement & Payment 01900 - 3 specifications, manufacturing tolerances established by the industries involved will be accepted.

PART 3: EXECUTION

There are no applicable requirements.

Cottonwood Trailhead Improvements Clearing and Grubbing 02031 - 1

SECTION 02031

CLEARING AND GRUBBING

A. Section Includes: Clearing of vegetation, and grubbing of stumps, roots, and debris; disposal of unutilized materials; erosion and sediment control measures and other incidental work related to preparing the site for later use.

B. Related Sections: Site Grading Section 02310, Excavation and Fill Section 02315, Excavation and Fill for Structures Section 02322, Watering Section 02339

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, including down timber, snags, brush, and rubbish occurring in the areas to be cleared.

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

1.3 PROJECT/SITE CONDITIONS

A. Work Limits: Work limits will be staked and control points established by the Government.

B. Burning of Slash: Shall not be permitted.

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

D. Cleared and Grubbed vegetation: Dispose of materials off the site in a legal manner.

E. Habitat Protection: The work is occurring within habitat critical for the survival of the Mojave

Desert Tortoise. To protect desert tortoises from harm as a result of construction activities all contractor and subcontractor employees working on-site shall receive tortoise education training.

This training will be provided by the BLM prior to commencement of any work and is expected to take 30 minutes. In addition, the government will have a biological monitor on-site as needed and determined by the monitor. No Clearing or Grubbing shall take place without prior approval by the COR and biological monitor.

2.1 EQUIPMENT

A. Spark Arresters: Shall meet the requirements of the U.S. Forest Service Spark Arrester Guide.

Cottonwood Trailhead Improvements Clearing and Grubbing 02031 - 2

3.1 PROTECTION

A. Utility Lines: Notify the COR immediately of damage to or an encounter with an unknown existing utility line. The Contractor shall be responsible for the repairs of damage to existing utility lines that are indicated or made known to the Contractor prior to the start of clearing and grubbing operations. When utility lines are encountered within the area of operations, the Contractor shall notify the Contracting Officer 72 hours prior to interruption of the service. The Contractor is responsible for calling Blue Stakes to locate all underground utilities.

3.2 CLEARING

A. Requirements: Clear trees, stumps, roots, brush, and other vegetation in areas to be graded; cut off below the original ground surface. Trees and vegetation to be left standing shall be protected from damage incident to clearing, grubbing, and construction operations. Clearing shall also include the removal and disposal of existing obstructions that obtrude, encroach upon, or otherwise obstruct the work.

3.3 GRUBBING

A. Requirements: Material to be grubbed, together with logs and other organic or metallic debris not suitable for foundation purposes, shall be removed to a depth of not less than six (6) inches below the original surface level of the ground in areas indicated to be grubbed and in areas indicated as construction areas under this contract, such as areas for buildings, and areas to be surfaced. Depressions made by grubbing shall be filled with suitable material and compacted to make the surface conform to the original adjacent surface of the ground.

3.4 SALVAGE

A. Requirements:

a. Salvageable items consisting of trees shall become the property of the Contractor. Items which have become the property of the Contractor shall be removed from the work area.

b. Salvageable items consisting of rock and boulders with a minimum diameter of 12” shall become the property of the BLM and shall be stacked neatly and free of excess dirt and vegetation in a location on-site marked by the BLM.

3.6 DISPOSAL

A. Requirements: Items or debris that is not designated as salvage by the Government, shall become the property of the Contractor. The disposal of materials off the site in a legal manner and for payment of any fees required is the responsibility of the Contractor. Sale of material onsite is not allowed, unless authorized in writing by the Contracting Officer. When hazardous materials are encountered during demolition operations, comply with applicable federal, state, and local regulations, laws, and ordinances concerning removal, handling, and protection against exposure or environmental pollution. Burning of removed materials is not permitted on the work site.

Cottonwood Trailhead Improvements Clearing and Grubbing 02031 - 3

A. Units: The work described in this section will be measured 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:

3 Clearing and Grubbing Lump Sum

Cottonwood Trailhead Improvements Site Grading 02310 - 1

SECTION 02310

SITE GRADING

PART 1 GENERAL

A. Section Includes: excavating, filling, grading, and other related work to prepare the site.

B. Related Sections: Clearing and Grubbing Section 02031, Excavation and Fill Section 02315, Excavation and Fill for Structures Section 02322, Testing Laboratory Services Section 01458

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 without blasting or the use of a tractor having a power rating in excess of 195 net horsepower, with a rear-mounted, heavy-duty, single-tooth, ripping attachment.

C. Common Excavation: Removal of materials which can be excavated using a rear-mounted, heavy-duty, single-tooth ripping attachment mounted on a crawler tractor with a power rating of 195 net horsepower 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 6 inches in depth that supports growth of vegetation and contains organic matter. Topsoil shall be free from subsoil, debris, and stones larger than 1 inch in diameter.

1.3 QUALITY ASSURANCE

A. Failure Criteria: Not limited to the following:

1. Formation of pools of moisture where positive drainage is indicated on the drawings.

2. Settlement of fill.

3. Flow of moisture toward, or entrapment against, structures.

1.4 PROJECT/SITE CONDITIONS

A. Environmental Conditions: Do not attempt to grade frozen or saturated material. Water dry material to prevent dust.

Cottonwood Trailhead Improvements Site Grading 02310 - 2

2.1 MATERIALS

No materials included in this section

3.1 EXAMINATION

A. Verification of Conditions: Verify the grade elevations existing on the site. Notify the Contracting Officer immediately when adjustments are required to provide finish elevations indicated. Site drainage shall be considered of prime importance.

3.2 PREPARATION

A. Clearing: Section 02031 - Clearing and Grubbing.

B. Stripping Topsoil: Stripping of topsoil is not required under this contract.

C. Scarifying: Scarifying is not required under this contract

3.3 INSTALLATION

A. Excavation: Section 02315 - Excavation and Fill. Section 02322 - Excavation and Fill for Structures.

B. Grades: When not otherwise indicated shall be level, or uniform slopes between points where elevations are given, or between such points and existing finished grades. Abrupt change in slopes shall be rounded. Grades shall slope away from the structure.

C. Compaction Methods: Fill material shall be spread over the full area of the cross section of the fill to a maximum layer thickness of 6 inches. Compact according to Section 02315 - Excavation and Fill or Section 02322 - Excavation and Fill for Structures before the next layer is spread. Use pneumatic tire roller or other acceptable equipment of at least ten ton capacity to obtain the required degree of compaction. During placing and compacting of the fill material, the optimum moisture content shall be maintained by wetting or drying as required. Compaction testing is required for subgrade(native) site grading.

D. Frozen Material: Fill shall not be placed when either the material or the surface on which it is to be placed is frozen.

E. Homogeneous Mass: Successive loads of material shall be dumped on the earthfill to produce the best practicable distribution of the material. 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.

F. Topsoil: Not required under this contract.

3.4 FIELD QUALITY CONTROL

Cottonwood Trailhead Improvements Site Grading 02310 - 3

A. Testing: Arrange for a certified independent testing laboratory, according to the requirements of

Section 01458 - Testing Laboratory Services, to perform the required testing, recording, and distributing of the results.

B. Compaction: Structural Fill material shall be compacted to a minimum density of 95 percent of the maximum dry density obtained by AASHTO T 99, Method C or T180, Method D.

Non-Structural Fill material shall be compacted to a minimum density of 90 percent of the maximum dry density obtained by AASHTO T 99, Method C or T180, Method D.

A. Units: The work described in this section and paid by the cubic yard to the lines and grades shown on drawings.

4 Site Grading Cubic Yards

Cottonwood Trailhead Improvements Excavation and Fill 02315 - 1

SECTION 02315

EXCAVATION AND FILL

A. Section Includes: Excavation, embankment construction, placement, and disposal of materials as shown on the drawings.

B. Related Sections: Testing Laboratory Services Section 01458, Clearing and Grubbing Section

02031, Watering Section 02339

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

B. Rock Excavation: Removal of material is rock excavation when it consists of igneous, metamorphic, and sedimentary rock which cannot be excavated without blasting or the use of a tractor having a power rating in excess of 195 net horsepower, with a rear-mounted, heavy-duty, single-tooth, ripping attachment.

1. Common Excavation: Removal of materials which can be excavated using a rear-mounted, heavy-duty, single-tooth ripping attachment mounted on a crawler tractor with a power rating of 195 net horsepower or less shall be considered common excavation.

2. 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.

3. 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

C. Topsoil: Surface soil approximately 6 inches in depth that supports growth of vegetation and contains organic matter. Topsoil shall be free from subsoil, debris, and stones larger than 1 inch (25 mm) in diameter.

1.3 PROJECT/SITE CONDITIONS

A. Excess Material: Usable excess material excavated shall be used in the embankment construction before the use of borrow is allowed. Borrow wasting is not permitted.

B. Borrow Material Source: No borrow will be used under this contract.

C. Fencing: When fencing is removed, replace the fencing to the same condition as it was before removal. The Contractor shall be responsible for the control of vehicles, visitors, or other unauthorized users when a portion of a fence is removed.

D. Drainage of Borrow Pits: Borrow pits, gravel pits, quarry sites, and waste or disposal areas shall be excavated so that water will not collect and stand.

Cottonwood Trailhead Improvements Excavation and Fill 02315 - 2

A. General: See definitions.

B. Fill Material: Shall be obtained from the unclassified 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. Materials removed in clearing and grubbing shall not be used for backfill or embankment.

3.1 PREPARATION

A. Clearing and Grubbing: The area to be excavated, and the surface area to be covered by fill material, shall be thoroughly cleared and stripped of vegetative matter, brush, trees, stumps, roots, loose rocks, and other objectionable materials.

B. Borrow Areas: No borrow areas will be opened under this contract.

C. Prewatering: Excavation areas and borrow pits may be prewatered before excavating the material. The area to be excavated shall be moistened to the full depth from the surface to the bottom of the excavation. The application of water shall be controlled so that the excavated material will be near the optimum moisture content as specified in paragraph 3.3A Testing, below. When necessary, prewatering shall be supplemented to assure that embankment material and backfill material moisture content comply with paragraph 3.3A Testing, below. Obtain water for prewatering according to Section 02339 - Watering.

D. Preparation for Grading: Prior to beginning embankment operations in an area, necessary clearing and grubbing in that area shall have been completed and accepted by the Contracting Officer. No embankment materials shall be placed upon an unapproved surface.

1. Embankment Greater Than 4 feet High: When embankments greater than 4 feet are to be constructed, the cleared surface shall be completely broken up by plowing or scarifying to a minimum depth of 6 inches. Scarifying or furrows shall be a maximum of 3 feet apart, and shall be parallel to the centerline of the embankment. This area shall then be compacted beginning with the first lift, as specified in paragraphs 3.3B Moisture Content and 3.3C Compaction.

2. Embankment 4 feet High or Less: When embankments 4 feet high or less are to be constructed, sod and vegetation shall be removed from the surface upon which the embankment is to be placed, and the surface of the original ground shall be scarified as described in paragraph 3.1D1, and shall be compacted as described in paragraphs 3.3B Moisture Content and 3.3C Compaction, before starting the embankment operation.

3.2 INSTALLATION

A. Explosives: The use of explosives is prohibited.

B. Excavation: Excavate where shown on the drawings and typical sections, unless staked otherwise. Excavate on a straight grade between the control points shown on the drawings

Cottonwood Trailhead Improvements Excavation and Fill 02315 - 3 unless staked otherwise. Existing structures which are disturbed or damaged by construction activity shall be reset, repaired, or replaced at the Contractor's expense.

C. Subgrade Compaction: In areas where earthfill, or granular embankments are to be constructed and in areas where excavation exposes the subgrade surface upon which vault toilet will be constructed, the subgrade shall be compacted as specified in paragraphs 3.3B Moisture Content and 3.3C Compaction below, before embankment construction begins.

D. Disposal of Materials: Excess and unsuitable material, shall be disposed of in a legal manner off-site unless otherwise stated.

E. Use of Borrow Material: Borrow material is not used under this contract.

F. Fill Material: Shall be spread over the full width of the cross section of the embankment to a maximum loose thickness of 6 inches, and shall be compacted as specified in paragraphs 3.3B Moisture Content and 3.3C Compaction below, before the next layer is spread. Use pneumatic tire rollers or other acceptable equipment of at least ten ton capacity to obtain the required degree of compaction. 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.

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

3.3 FIELD QUALITY CONTROL

A. Testing: Arrange for a certified independent testing laboratory, according to the requirements of

B. Moisture Content: During placing and compacting of fill material, the optimum moisture content (-4 percent to +2 percent) as determined by AASHTO T 217 or AASHTO T 239, unless otherwise approved, shall be maintained by wetting or drying.

C. Compaction: Non-Structural Fill material shall be compacted to a minimum density of 90 percent of the maximum dry density obtained by AASHTO T 99, Method C or T180, Method D.

Cottonwood Trailhead Improvements Excavation and Fill for Structures 02322 - 1

SECTION 02322

EXCAVATION AND FILL FOR STRUCTURES

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

B. Related Sections: Section 10100 - Prefabricated Vault Toilet Section 03306 - Concrete

A. Unclassified Excavation: Shall consist of the material excavated 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 without blasting or the use of a tractor having a power rating in excess of 195 net horsepower, with a rear-mounted, heavy-duty, single-tooth, ripping attachment.

C. Common Excavation: Removal of materials which can be excavated using a rear-mounted, heavy-duty, single-tooth ripping attachment mounted on a crawler tractor with a power rating of 195 net horsepower 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 the site during

F. Topsoil: Surface soil approximately 6-inches in depth, that supports growth of vegetation and contains organic matter. Topsoil shall be free from subsoil, debris, and stones larger than 1-inch in diameter.

1.3 PROJECT AND SITE CONDITIONS

A. Borrow Sources: No borrow areas will be opened under this contract.

B. Environmental Conditions

1. Areas that have become saturated with oil, gasoline, or bituminous products shall be excavated to a depth of 12 inches (300 mm) beyond the contaminated material; backfill with approved material.

2. Finish slopes according to the drawings.

Cottonwood Trailhead Improvements Excavation and Fill for Structures 02322 - 2

A. General: Material excavated shall be unclassified. Use excavated material for backfill, rocks no larger than 6 inches in maximum dimension shall be placed within 6 inches of the exterior vault walls and concrete slabs or footings. Materials removed in clearing and grubbing shall not be used for backfill.

B. Backfill

1. Initial backfill shall be select earth material taken from the excavation or other source.

Material shall not contain any rock larger than 1/2” in greatest dimension, frozen earth, clods, debris, or material with an exceptionally high void content (vegetative matter).

2. Subsequent backfill shall be earth material free from large rock greater than 6” in its largest dimension, frozen earth, clods, debris, or material with an exceptionally high void content (vegetative matter).

C. Bedding

1. Bedding shall be well-graded, rounded or angular stone or gravel, sand, or other material approved by the CO. Bedding may be processed from onsite-excavated material or imported from offsite. 100% of the material shall pass the 1 1/2" sieve, and no more than 12% of the material shall pass the No. 200 sieve. Sieve analysis shall be signed and sealed by a professional engineer.

A. Clearing: Shall be according to Section 02031 - Clearing and Grubbing.

B. Utilities: Before starting excavation, establish the location and extent of underground utilities in the work area. Protect utility services uncovered by excavation. Notify the COR immediately if utilities are damaged. Damage to utilities shall be repaired at the Contractor's expense. Repair to damaged utilities shall be started immediately unless otherwise authorized by the Contracting Officer.

C. Protection of Excavation: Construct and maintain shoring, bracing, underpinning, and sheet piling necessary to protect the excavation and adjacent structures. Remove protective devices when safe to do so. Portions wholly buried by earth and at a distance of at least 18 inches from permanent structures may be left in place in the completed work. The exposed portion of the sheeting and shoring must be removed before completing the backfill.

D. Dewatering: Keep the excavation dewatered so that installation of tanks, forming, and concrete work can be carried on under dewatered conditions. Dispose of excess water by using natural drainageways near the site to the extent of their natural capacity, when no erosion or other damage will occur. Contain the water on Government property.

A. General

1. The use of explosives is prohibited.

B. Excavation:

1. General: Perform excavation to the lines, grades, and elevations indicated to allow for safety, placing and removal of forms and inspection. Provide proper depth with allowance

Cottonwood Trailhead Improvements Excavation and Fill for Structures 02322 - 3 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. Polyethylene Vaults: The excavation to accommodate the concrete vault must be large enough to be workable and to allow the floor of the building to fit on the vault when placed, but small enough to avoid excessive…