Attachment_2_Statement_of_Work.pdf

BLM CO State Office

5/24/2021 WELDED PIPE FENCES

BLM CO KFO Demo / Replace Vault Toilet 323116.50 - 1

SECTION 323116.50 - WELDED PIPE FENCES

PART 1: GENERAL

A. RELATED DOCUMENTS

1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Spec-ification Sections, apply to this Section.

B. SUMMARY

1. Section Includes:

1.1 Post and cable steel wire fence

2. Related Requirements:

2.1 Section 02224 "Excavating" for site excavation, fill, and backfill where welded-wire fences are located.

C. PREINSTALLATION MEETINGS

1. Preinstallation Conference: Conduct conference at Project Site.

D. ACTION SUBMITTALS

1. Product Data: For each type of product.

2. Shop Drawings: For fencing and gates.

PART 2: PRODUCTS

A. STEEL PIPE FENCE

1. Posts: Circular tubes with post cap

2. 6” nominal dia formed from 0.25-inch nominal-thickness, metallic-coated steel sheet.

3. Post Cap shall be domed and formed from steel sheet and match thickness of post.

4. Wire for steel post and cable fence: 5/8” diameter wire rope.

5. Fasteners: Manufacturer's standard corrosion-resistant.

BLM CO KFO Demo / Replace Vault Toilet 323116.50 - 2

B. FENCE AND GATE MATERIALS

1. Plates, Shapes, and Bars: ASTM A 36/A 36M.

2. Tubing: ASTM A 500/A 500M, cold-formed steel tubing or Class 1 (new) drill pipe grade E or better.

C. MISCELLANEOUS MATERIALS

1. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded.

PART 3: EXECUTION

A. EXAMINATION

1. Examine areas and conditions, with Installer present, for compliance with requirements for site clearing, earthwork, pavement work, construction layout, and other conditions affecting performance of the Work.

2. Do not begin installation before final grading is com-pleted unless otherwise permitted by Government.

3. Proceed with installation only after unsatisfactory condi-tions have been corrected.

B. FENCE INSTALLATION

1. Set posts in holes according to drawings

2. Space posts uniformly as specified in drawings

3. If holes are over-excavated, backfill with free-draining, compacted, crushed aggregate to meet grade.

4. Do not leave open holes overnight.

5. Over-excavate mud and fill hole with free-draining, com-pacted, crushed aggregate to height 3” below bottom of fence post if water enters fence hole.

6. Install posts level in both directions.

7. Install posts in line.

8. Align wire hole parallel to fence line.

PART 4: MEASUREMENT AND PAYMENT

BLM CO KFO Demo / Replace Vault Toilet 323116.50 - 3

4.01 METHOD OF MEASUREMENT

A. Units: The work described in this section will be measured and paid for by each complete unit installed in place according to the drawings, specifications, industry standards, and accepted as fully functional.

1. Post and Cable Fencing will be measured along the ground immediately adjacent to the fence by using a measuring wheel designed for such purposes. Post and Cable Fencing will be paid for by each linear foot of fence fabricated and installed as specified.

4.02 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 Pay Unit

CO-952-0323116.50 post and cable fence. . . . . . . . . . . . . . . . . LF

END OF SECTION

EXCAVATING, BACKFILLING, AND COMPACTING FOR STRUCTURES

BLM CO KFO Demo / Replace Vault Toilet 02224 - 1

SECTION 02224 EXCAVATING, BACKFILLING, AND COMPACTING FOR

STRUCTURES

PART 1: GENERAL

1.1 SUMMARY:

A. Section Includes: Excavating, backfilling, and compacting for the various graded areas and structures, as shown on the drawings.

B. Related Sections:

1. General Information and Requirements: Section 01009

2. Precast Concrete Toilet Structure: Section 03415

1.2 DEFINITIONS:

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

1.3 QUALITY ASSURANCE:

A. Failure Criteria: Not limited to the following: Settlement of backfill which would allow moisture to pond.

1.4 PROJECT/SITE CONDITIONS:

A. Borrow Sources: Borrow on Government land will be allowed only at the designated site, as shown on the drawings.

B. Environmental Conditions:

1. Areas that have become saturated with oil or gasoline shall be excavated to a depth of 12 inches beyond the contaminated material and backfilled with approved material. Contaminated material shall be properly disposed offsite at an approved sanitary landfill. The Contractor shall assume all associated costs for transportation and disposal of contaminated materials.

2. Hand shovel or rake, as necessary, to remove excess material in areas inaccessible to construction equipment and grade to produce a well-drained surface.

C. Dewatering: All work shall be executed under dewatered

BLM CO KFO Demo / Replace Vault Toilet 02224 - 2 conditions. Dispose of excess water by using natural drainage ways near the site to the extent of their natural capacity when no erosion or other damage is encountered.

The Contractor shall provide and maintain, at all times during construction, ample means and devices with which to promptly remove and properly dispose of all water entering the excavations or other parts of the work without damage to adjacent property. All excavations shall be kept free from standing water. Any damage caused by water in the excavations shall be repaired by the Contractor at the Contractor’s expense.

PART 2: PRODUCTS

2.1 MATERIALS:

A. General: On-site borrow and excavated material shall be unclassified.

B. Material from excavations shall be used as backfill and bedding material unless it contains ice or frozen earth, debris or earth with high moisture content and shall be approved before use. Materials removed in clearing and grubbing shall not be used for backfill.

PART 3: EXECUTION

3.1 PREPARATION:

A. Clearing and Grubbing: All areas designated for new construction shall be cleared and grubbed. The clearing shall remove all existing surface vegetation. The cleared materials shall be stockpiled throughout the project area and used to revegetate and stabilize new slopes, as shown on the drawings.

3.2 INSTALLATION:

A. General:

1. Excavation: Typical cut slopes are 2:1. Perform excavation to the lines, grades, and elevations indicated to allow for safety, placing of materials and inspection. When frost action occurs, remove frozen soil and replace with approved soil compacted according to the requirements for bedding.

2. Bedding: The bedding depth shall be 2”. Rocks greater than

BLM CO KFO Demo / Replace Vault Toilet 02224 - 3

1” in any dimension shall be removed from the bedding material. Bedding shall be placed, graded, and compacted prior to placement of the precast concrete vault. Bedding material shall be placed over the entire bottom of the excavation and shall be graded to meet the requirements of

03415 – PRECAST CONCRETE TOILET STRUCTURE, 3.2

INSTALLATION, B. STAKING: Bedding material shall be compacted before placing vault. Check bedding material with a level to ensure that the compacted bottom of the vault has the required slope. Check slope by having a sturdy straight edge of at least 10 feet in length.

3. Backfill: Typical fill slopes are 2:1. Backfilling will be permitted only after all inspections have been performed and the required work to be covered has been approved by the Contracting Officer. If backfill is placed prior to inspection, backfill shall be removed to allow complete access and inspection at no additional cost to the Government. Backfill shall be of uniform select material.

Rocks over 2 inches maximum diameter shall not be placed within 12 inches of any structure. Place and compact backfill adjacent to structures in such a manner as to prevent wedging action or eccentric loading upon or against the structures. Backfill shall be placed in layers not exceeding 6 inches, loose depth. A minimum of three passes per lift, full width of excavation, shall be required by a vibratory, mechanical compactor, at moisture content suitable for such density. Thoroughly compact until a uniform density is attained.

B. Final Grading: All fill materials shall be graded, shaped and compacted to the design spot elevations as shown on the drawings. Final grading will provide suitable drainage away from the toilet structure.

C. Excess Material: Excavated materials which are unsuitable for or are in excess of the requirements for backfill as determined by the Contracting Officer, shall be deposited as waste at a location in the immediate vicinity as directed by the Contracting Officer. Material generated from clearing and grubbing operations shall be evenly distributed on newly constructed cut and fill slopes and waste areas. Materials shall be evenly spread and blended into adjacent topography.

BLM CO KFO Demo / Replace Vault Toilet 02224 - 4

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.

PRECAST CONCRETE TOILET STRUCTURE

BLM CO KFO Demo / Replace Vault Toilet 03415 - 1

SECTION 03415 PRECAST CONCRETE TOILET STRUCTURE

PART 1: GENERAL

1.1 SUMMARY:

A. Section Includes: Install one new precast concrete toilet structure, as shown on the drawings and specified herein.

Also included is demolition of an existing toilet structure.

1.2 SUBMITTALS

A. The person installing the toilet shall submit paperwork proving that he/she is a certified toilet building installer of the same type and style being installed at this site.

PART 2: PRODUCTS

2.1 MATERIALS:

A. Contractor Furnished Materials: The precast concrete toilet and vaults shall meet or exceed the following requirements:

B. Note: Due to the requirement of matching existing toilet structures within the North Sand Hills Recreation Area, the BLM is requesting a Tioga Special double vault as manufactured by CXT Concrete Buildings, Spokane Industrial Park, 3808 N. Sullivan Road, Bldg. #7, Spokane WA 99216.

509-921-8766. www.cxtinc.com. Prior approved equals may be considered, however, color, finish, fittings, and exact matching to existing facilities is crucial.

1. General:

1.1 Double vault toilet building with a 60” turning radius

within each toilet room

1.2 Meet UFAS and A.D.A. accessibility standards

1.3 Vaults shall have a 1,000 gallon capacity and a black

ABS one piece liner with side wall embeds http://www.cxtinc.com/

BLM CO KFO Demo / Replace Vault Toilet 03415 - 2

1.4 4” thick reinforced precast concrete walls

1.5 5” thick reinforced precast concrete roof and floor

1.6 Colored thru concrete with exterior stain and anti-

graffiti sealer

1.7 Primed and painted white interior

1.8 Buildings furnished with toilet riser (ADA), toilet

paper holder, ADA handrails and vent pipe.

2. Specialty Items:

2.1 Barnwood Wall Texture

2.2 Cedar Shake Shingle Roof Texture

2.3 Wall Color – Sand Beige

2.4 Roof Color – Granite Rock

2.5 Privacy Latch – ADA Handle

2.6 Deadbolt Lock, Vendor supplied with Schlage cylinder

#1152

2.7 Unisex Signage

2.8 Accessible Signage

2.9 Wall Vent, one per Room

2.10 Optional Urinal is Not Required

C. Bedding and Backfill Material: The bedding and backfill material shall be according to Section 02224 - Excavating, Backfilling and Compacting or Structures.

D. Rubr-Nek: Butyl rubber base flexible gasket type sealant, RU106-RUBR-NEK-LTM. Width shall be a minimum of 1.5”.

Thickness shall be 1.5” at application time.

PART 3: EXECUTION

3.1 DEMOLITION:

BLM CO KFO Demo / Replace Vault Toilet 03415 - 3

A. Existing Toilet Building: Prior to demolition, the Contractor shall pump the existing vault. The Contractor shall submit written verification of proper disposal. The Contractor shall demolish the entire wood framed toilet building, vault and concrete sidewalk around the building.

All demolition materials shall be deposited in an approved sanitary landfill. Provide written proof that proper disposal techniques were followed.

B. Backfill/Grading: The Contractor shall fill all voids created during the demolition process. Grade and shape the area to blend into existing topography while providing proper drainage. Backfill shall be in accordance with Section 02224 – Excavating, Backfilling and Compacting for Structures

3.2 INSTALLATION:

A. Excavation and Backfill: All excavation and backfill shall be in accordance with Section 02224 - Excavating, Backfilling and Compacting or Structures.

B. Staking: The Contractor shall set grade stakes for the Contractor. The toilet shall be set (beginning at the bottom of the vault) so that floor inside the toilet will be installed so that there will be 0.13ft (tolerance 0.01ft. +/-) of fall from the back to the front. The back is defined as the side where the vent stacks are located, and the front is the side where the doors are located. If, at time of final inspection, the interior floor of the toilet does not have this specified amount of fall then the toilet will be removed and reset, by the Contractor, to the proper grade, at no additional cost to the Government.

C. Installation: The Contractor shall use a crew certified by the manufacturer of the vault toilet. The Contractor shall set the toilet vault and building, in accordance with manufacturers specifications, at the designated site and as shown on the drawings.

D. Appurtenances: The Contractor shall install the appurtenances associated with the building, according to the drawings.

1. Rubber Gasket: The Contractor shall install the “rubber-nek” gasket on the top edge of the vaults, prior to placement of the building. If during setting the toilet the building is set down on the rubber-nek and then must be lifted off, then that “used” rubber-nek will be scraped

BLM CO KFO Demo / Replace Vault Toilet 03415 - 4 off and new rubber-nek installed. Setting the toilet on the same rubber-nek more than once is not allowed.

Sliding the toilet on the rubber-nek is not allowed. If toilet must be repositioned on the vaults, then thoroughly scrape, and clean the old rubber-nek off the vaults and toilet and install new rubber-nek before resetting.

Reusing Rubber-nek is not allowed.

2. Toilet Riser - The Contractor shall install toilet risers.

Silicone caulk shall be applied between the toilet riser flange and the concrete floor before the toilet riser is installed.

3. Vent Pipe: The Contractor shall install the vent pipes through the hole in the roof. The vent pipes shall be sealed around the top of the roof opening and at the vault connection with silicone caulk.

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: The new precast concrete toilet structure will be measured and paid for by each, installed and accepted.

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

4.2 BASIS OF PAYMENT:

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

Pay Item Pay Unit

CO-952-03415 (10) Precast Double Concrete Toilet . . . . . . Each

CO-952-03415 (20) Demolition of Old Restroom . . . . . . Lump Sum

05/24/2020 EARTH MOVING

BLM CO KFO Demo / Replace Vault Toilet 312000 - 1

SECTION 312000 - EARTH MOVING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Excavating and filling for rough grading the Site.

B. Related Requirements:

1. Section 311000 "Site Clearing" for site stripping, grubbing, stripping and stockpiling topsoil, and removal of above- and below-grade improvements and utilities.

C. Referenced Standards:

1. Colorado Department of Transportation (CDOT) “Standard Specifications for Road and

Bridge Construction” 2017 edition.

1.3 MEASUREMENT AND PAYMENT

A. General: Measurement and payment for earthwork will be either by the lump-sum method or by the unit-price method as determined by the listing of the bid items for earthwork indicated in the Bid Schedule.

1. Items Not Measured for Payment:

a. Compacting original ground or scarified sub grade will not be measured separately for payment, and all costs in connection therewith will be considered incidental to the material or structure to be placed or constructed on the compacted original ground or sub grade.

b. Sub grade and bearing-foundation preparation will not be measured separately for payment, and all costs in connection therewith will be considered incidental to the material or structure to be placed or constructed on the sub grade or bearing foundation

c. Re-handling of stockpiled material will not be measured separately for payment, but will be considered incidental to the earthwork to which it pertains.

d. Spoiling excavated material and management of spoils stockpile will not be measured separately for payment.

2. Payment: Payment for earthwork will be made at the Contract unit prices for the computed quantities as determined by the measurement methods specified herein. Payment will be made only for items listed in the Bid Schedule of the Bid Form. All other work will be considered incidental to and included with the Bid Items.

BLM CO KFO Demo / Replace Vault Toilet 312000 - 2

1.4 DEFINITIONS

A. Backfill: Soil material or controlled low-strength material used to fill an excavation.

1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe.

2. Final Backfill: Backfill placed over initial backfill to fill a trench.

B. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated.

1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by Government. Authorized additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work.

2. Bulk Excavation: Excavation more than 10 feet (3 m) in width and more than 30 feet (9 m) in length.

3. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions without direction by Government. Unauthorized excavation, as well as remedial work directed by Government, shall be without additional compensation.

C. Fill: Soil materials used to raise existing grades.

D. Subgrade: Uppermost surface of an excavation or the top surface of a fill or backfill immediately below subbase, drainage fill, drainage course, or topsoil materials.

1.5 PREINSTALLATION MEETINGS

Preinstallation Conference: Conduct pre-excavation conference at Project site.

1. Review methods and procedures related to earthmoving, including, but not limited to, the following:

a. Personnel and equipment needed to make progress and avoid delays.

b. Coordination of Work with utility locator service.

c. Coordination of Work and equipment movement with the locations of tree- and plant-protection zones.

d. Field quality control.

1.6 FIELD CONDITIONS

A. Traffic: Minimize interference with adjoining roads, streets, walks, and other adjacent occupied or used facilities during earth-moving operations.

1. Do not close or obstruct roads without permission from Owner and authorities having jurisdiction.

2. Provide alternate routes around closed or obstructed traffic ways if required by Owner or authorities having jurisdiction.

BLM CO KFO Demo / Replace Vault Toilet 312000 - 3

B. Utility Locator Service: Notify Call Before You Dig (Colorado 811) for area where Project is located before beginning earth-moving operations.

PART 2 - PRODUCTS

2.1 SOIL MATERIALS

A. General: Cut existing soils to achieve grades on plan documents.

B. Borrow as necessary to meet planned grades is minimal.

C. Use clean subgrade soil with minimal organic content to meet grades as needed.

D. Stockpile cut soil as shown on plans.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect utilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth-moving operations.

B. Protect and maintain erosion and sedimentation controls during earth-moving operations.

3.2 DEWATERING

A. Provide dewatering system of sufficient scope, size, and capacity to control hydrostatic pressures and to lower, control, remove, and dispose of ground water and permit excavation and construction to proceed on dry, stable subgrades.

B. Protect subgrades from softening, undermining, washout, and damage by rain or water accumulation.

C. Dispose of water removed by dewatering in a manner that avoids endangering public health, property, and portions of work under construction or completed. Dispose of water and sediment in a manner that avoids inconvenience to others.

3.3 EXPLOSIVES

A. Do not use explosives.

3.4 EXCAVATION, GENERAL

A. Unclassified Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil

BLM CO KFO Demo / Replace Vault Toilet 312000 - 4 materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions.

1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials.

3.5 SUBGRADE INSPECTION

A. Notify Government when excavations have reached required limits.

B. Reconstruct subgrades damaged by freezing temperatures, frost, rain, accumulated water, or construction activities, as directed by Government, without additional compensation.

3.6 STORAGE OF SOIL MATERIALS

A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing.

Place, grade, and shape stockpiles to drain surface water.

1. Stockpile soil materials away from edge of excavations at locations marked on construction documents.

2. Stockpile slopes shall be no steeper than 1 vertical to 3 horizontal.

3.7 BACKFILL

A. Place backfill on subgrades free of mud, frost, snow, or ice.

3.8 SOIL FILL

A. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material.

B. Place and compact fill material in layers to required elevations as follows:

1. Under grass and planted areas, use satisfactory soil material.

C. Place soil fill on subgrades free of mud, frost, snow, or ice.

3.9 SOIL MOISTURE CONTROL

A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before compaction to within 2 percent of optimum moisture content within channel excavation.

1. Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain frost or ice.

BLM CO KFO Demo / Replace Vault Toilet 312000 - 5

2. Remove and replace, or scarify and air dry, otherwise satisfactory soil material that exceeds optimum moisture content by 2 percent and is too wet to compact to specified dry unit weight.

3.10 COMPACTION OF SOIL BACKFILLS AND FILLS

A. Place backfill and fill soil materials in layers not more than 6 inches (200 mm) in loose depth for material compacted by heavy compaction equipment and not more than 4 inches (100 mm) in loose depth for material compacted by hand-operated tampers.

B. Compact aggregate base course according CDOT Standard Specifications for Road and Bridge Construction Section 304

3.11 GRADING

A. Site Improvement Areas: Uniformly grade areas to a smooth surface, free of irregular surface changes. Grade to cross sections, lines, and elevations indicated.

1. Provide a smooth transition between adjacent existing grades and new grades.

2. Cut out soft spots, fill low spots, and trim high spots to comply with required surface tolerances.

B. Site Rough Grading: Slope grades to direct water into exiting drainage pathways. Finish subgrades to elevations required to achieve indicated finish elevations, within the following subgrade tolerances:

1. Turf or Unpaved Areas: Plus or minus 2 tenths of one foot.

C. Spoils area: Grade spoils area to an irregular surface to simulate the natural landscape in the area.

3.12 FIELD QUALITY CONTROL

A. Special Inspections: Government will inspect performance of the following:

1. Determine prior to placement of fill that site has been prepared in compliance with requirements.

2. Determine that maximum lift thickness comply with requirements.

3. Determine, during placement and compaction, that in-place density of compacted fill complies with requirements.

B. Allow Government to inspect and test subgrades and each fill or backfill layer as required.

Proceed with subsequent earth moving only after test results for previously completed work comply with requirements.

C. When Government reports that subgrades, fills, or backfills have not achieved degree of compaction specified, scarify and moisten or aerate, or remove and replace soil materials to depth required; recompact and retest until specified compaction is obtained.

BLM CO KFO Demo / Replace Vault Toilet 312000 - 6

3.13 PROTECTION

A. Protecting Graded Areas: Protect newly graded areas from traffic, freezing, and erosion. Keep free of trash and debris.

B. Repair and reestablish grades to specified tolerances where completed or partially completed surfaces become eroded, rutted, settled, or where they lose compaction due to subsequent construction operations or weather conditions.

1. Scarify or remove and replace soil material to depth as directed by Government; reshape and recompact.

C. Where settling occurs before Project correction period elapses, remove finished surfacing, backfill with additional soil material, compact, and reconstruct surfacing.

1. Restore appearance, quality, and condition of finished surfacing to match adjacent work, and eliminate evidence of restoration to greatest extent possible.

3.14 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove waste materials, including trash and debris, and legally dispose of them off Owner's property.

B. Transport surplus soil to designated storage areas on Government property. Stockpile or spread soil as directed by Government.

1. Slope of stockpiled material shall not exceed 3 horizontal to 1 vertical.

2. Remove waste materials, including trash and debris, and legally dispose of them off Owner's property.

END OF SECTION 312000

05/25/2021 CRUSHER FINES

BLM CO KFO Demo / Replace Vault Toilet 32 15 40 - 1

SECTION 32 15 40 - CRUSHER FINES SURFACING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Preparation, stockpiling, hauling, placing, and compacting of crusher fines (also referred to as “trail surfacing” or “trail mix” as indicated on the Drawings and specified herein.

B. Related Requirements:

1. The following is a list of Sections, which may be related to this section:

a. Section 31 20 00, Earth Moving

C. Referenced Standards

1. American Association of State Highway and Transportation Officials (AASHTO):

a. M147, Standard Specification for Materials for Aggregate and Soil Aggregate

Subbase, Base, and Surface Courses.

b. T11, Standard Method of Test for Materials Finer Than 75m (No. 200) Sieve in

Mineral Aggregates by Washing.

c. T27, Standard Method of Test for Sieve Analysis of Fine and Coarse Aggregates.

d. T89, Standard Specification for Determining the Liquid Limit of Soils.

e. T90, Standard Specification for Determining the Plastic Limit and Plasticity Index of Soils.

f. T99, Standard Specification for the Moisture-Density Relations of Soils Using a 2.5 kg (5.5 pound) Rammer and a 305 mm (12 in) Drop.

g. Revised 08/2015

h. T180, Standard Specification for Moisture-Density Relations of Soils Using a 4.54 kg (10-lb) Rammer and a 457 mm (18-in) Drop.

i. T265, Standard Method of Test for Laboratory Determination of Moisture Content of Soils.

j. T310, Standard Specification for In-Place Density and Moisture Content of Soil and

Soil-Aggregate by Nuclear Methods (Shallow Depth).

2. ASTM International (ASTM):

a. C136, Standard Test Method for Sieve Analysis of fine and Coarse Aggregates

b. D698, Standard Test Methods for Laboratory Compaction Characteristics of Soil

Using Standard Effort (12 400 ft-lbf/ft3 (600 kN-m/m3)).

c. D1557, Standard Test Methods for Laboratory Compaction Characteristics of Soil

Using Modified Effort (56,000 ft-lbf/ft3(2,700 kN-m/m3)).

d. C88, Test Method for Soundness of Aggregates by Use of Sodium Sulfate or

Magnesium Sulfate.

e. D2488, Standard Practice for Description and Identification of Soils (Visual-Manual

Procedure)

f. D4791, Test Method for Flat Particles, Elongated Particles, or Flat and Elongated

Particles in Coarse Aggregate

3. Colorado Division of Transportation “Standard Specification for Road and Bridge

Construction” Current Edition

BLM CO KFO Demo / Replace Vault Toilet 32 15 40 - 2

1.3 MEASUREMENT AND PAYMENT

A. General: Measurement and payment for crusher fines will be either by the lump-sum method or by the unit-price method as determined by the listing of the bid items for earthwork indicated in the Bid Schedule or the Bid Form

1. Items Not Measured for Payment:

a. Compacting original ground or scarified sub grade will not be measured separately for payment, and all costs in connection therewith will be considered incidental to the material or structure to be placed or constructed on the compacted original ground or sub grade.

b. Sub grade preparation will not be measured separately for payment, and all costs in connection therewith will be considered incidental to the material or structure to be placed or constructed on the sub grade or bearing foundation

c. Applying herbicide will not be measured separately for payment.

d. Re-handling of stockpiled material will not be measured separately for payment, but will be considered incidental to the earthwork to which it pertains.

e. Spoiling excavated material and management of spoils stockpile will not be measured separately for payment.

2. Payment: Payment for crusher fines will be made at the Contract unit prices for the computed quantities as determined by the measurement methods specified herein.

Payment will be made only for items listed in the Bid Schedule of the Bid Form. All other work will be considered incidental to and included with the Bid Items.

1.4 SUBMITTALS

A. Contractor shall cooperate with Government in obtaining and providing samples of all specified materials.

B. Contractor shall submit certification from the supplier certifying the crusher fines, or approved equal, meets the requirements of this Specification.

C. Contractor shall submit certified laboratory test certificates for all items required in this section.

1. Sieve Analysis according to AASHTO T 99.

2. A Loose Wet Density of the material according to Jigging Method ASTM C 29.

3. Atterburg limits according to ASTM D 4318 PART 2

PART 2 - PRODUCTS

2.1 HERBICIDE

A. Herbicide shall be Casoron 4G granular weed and grass killer or approved equal.

2.2 SEPARATION GEOTEXTILE

A. Separation geotextile shall be woven CDOT class 2 from a CDOT approved vendor.

2.3 CRUSHER FINES

A. Crusher Fines shall be furnished and installed to a minimum 6” compacted depth.

B. Aggregates: Crushed stone shall consist of inert materials that are hard, durable, with stone free from surface coatings and deleterious materials.

C. Crusher Fines shall be compacted to 95% compaction.

D. Finishing:

BLM CO KFO Demo / Replace Vault Toilet 32 15 40 - 3

1. The final layer of crusher fines shall be finished with equipment capable of shaping and grading the finished surface.

E. Gradations:

1. Gradation shall meet the gradation below or approved equal as approved by ENGINEER.

PART 3 - EXECUTION

3.1 GENERAL

A. Equipment:

1. Equipment shall be capable of performing the Work as described in this Section.

2. Equipment that is inadequate to obtain the results specified shall be replaced or supplemented as required to meet the requirements of this Section.

3. Any equipment that is used in an improper manner may be cause for rejection of the Work if in the opinion of Government the Work fails to meet the requirements of this Section.

4. Equipment used for compaction shall be the rolling type, vibratory type, or combination of both types, and shall be of sufficient capacity to meet the compaction requirements herein.

3.2 LAYOUT OF WORK

A. The Contractor shall stake or otherwise delineate the proposed alignment of the path according to the drawings. Obtain approval of the Government prior to proceeding with excavation and subgrade preparation.

B. Cut/fill bench for the crusher fines as shown on the drawings.

C. Grade area within limits of paving. Wet and roll subgrade to obtain a firm, uniform, compacted subgrade. Keep cut sides vertical and true to line horizontally with a uniform width.

3.3 WEED CONTROL

A. Herbicide/Chemical Applications

Standard US Sieve Size Percentage Passing by Weight ½ inch 100

⅜ inch 100

No. 4 65-80

No. 8 48-63

No. 16 40-49

No. 30 30-40

No. 50 20-27

No. 100 10-18

No. 200 10-12

Note: Materials shall consist of bank or pit run material.

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B. Apply Casoron 4G granular weed and grass killer or approved equal to prepared subgrade per manufacturer’s recommendations.

C. Apply Casoron 4G granular weed and grass killer at a rate of 250 - 300 pounds per acre. Apply approved equal at manufacturers recommended rate.

D. Herbicides or other chemicals shall be applied using well-maintained equipment by individuals working for Contractor who are properly licensed by any State and/or Federal Agency having jurisdiction over such applications. It shall be the responsibility of the Contractor to be knowledgeable of any and all current laws and regulations pertaining to herbicide and other chemical applications, and to notify Government or Governments Representative immediately if any request for herbicide or chemical applications by Government or Governments Representative is inappropriate as they pertain to these laws and regulations.

E. Herbicides or other chemicals shall not be applied during periods when wind or other physical conditions cause the herbicides or chemicals to be transported a distance of more than five (5) feet from the immediate area where they are being placed. It shall be the responsibility of the Contractor to stop Work immediately and notify the Government or Governments Representative if any weather or other physical condition exists, which would make the application of herbicides or other chemicals inappropriate.

F. All herbicides or other chemicals used shall be applied at a rate and strength, and by the method recommended by the manufacturer of the product being used.

3.4 SUB-GRADE PREPARATION

A. Make any corrections necessary to base furnished and installed under Section 31 20 00, Earth

Moving to bring grades to those necessary for drainage as shown on drawing.

B. Make sure proper drainage is available to ensure no standing water on the surface or adjacent to crusher fines including downspouts, when placed under roof overhang.

C. Place CDOT approved class 2 separation geotextile as shown on drawings.

3.5 PLACEMENT AND COMPACTION

A. The Contractor is responsible for controlling placement of the material; no additional compensation will be made for material placement in excess of the specified thickness or width.

B. Do not install crusher fines material during rain or snow. Do not install crusher fines on sub-grade that has standing water.

C. If the required compacted depth of the crusher fines exceeds 6 inches (6"), place course in two or more layers of approximately equal thickness. The minimum thickness of any one layer shall be four inches (4").

D. Add water to approximate optimum moisture content. Use roller or mechanical hand tamper for compaction. Compact to 95% Standard Proctor Density (ASTM D698-70) to a uniform thickness.

1. Use plate compactor on edges and hard to get areas.

2. Loose material shall not be present on final surface.

E. Top of path shall be flush with adjacent grade. Remove any excess gravel on edges. Ensure that there are no low spots, high spots, or standing water on or adjacent to path.

3.6 SURFACE FINISHING

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A. Use a smooth steel wheel roller for the final rolling of top surface of Crusher Fines. Water surface and evenly spread loose stones before final rolling. Make minimum of two complete passes over area to embed stones. Correct soft spots developed during rolling.

B. Compacted surface shall be smooth and free from waves and other irregularities. Unsatisfactory portions of base course shall be torn up, reworked, re-laid, and rerolled at no additional expense to the Owner.

3.7 INSPECTION

A. Finished surface shall be uniform and solid, with no evidence of chipping or cracking.

B. Compacted paving material shall be firm to the full depth of pavement with no soft areas.

C. Loose material shall not be present on the surface

D. No ruts shall be visible on the surface of the pavement.

E. Pavement sections that do not meet this specification, shall be repaired or replaced at the Contractor's expense.

3.8 REPAIRS

A. Excavate damaged area to depth of crusher fines paving material and square off sidewalls.

B. If area is dry, moisten damaged portion lightly and scarify.

C. Apply crusher fines to excavated area to finished grade.

D. Compact with an 8” to 10” hand tamp or 1000 lb. roller.

E. Repaired surface shall be smooth and free from waves and other irregularities. Unsatisfactory portions of base course shall be torn up, reworked, re-laid, and rerolled at no additional expense to the Owner.

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SECTION 323116.50 - WELDED PIPE FENCES

PART 1: GENERAL

A. RELATED DOCUMENTS

1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Spec-ification Sections, apply to this Section.

B. MEASUREMENT AND PAYMENT

1. General: Measurement and payment for welded pipe fences will be by linear foot.

C. SUMMARY

1. Section Includes:

1.1 Post and cable steel wire fence

2. Related Requirements:

2.1 Section 02224 "Excavating" for site excavation, fill, and backfill where welded-wire fences are located.

D. PREINSTALLATION MEETINGS

1. Preinstallation Conference: Conduct conference at Project Site.

E. ACTION SUBMITTALS

1. Product Data: For each type of product.

2. Shop Drawings: For fencing and gates.

PART 2: PRODUCTS

A. STEEL PIPE FENCE

1. Posts: Circular tubes with post cap

2. 6” nominal dia formed from 0.25-inch nominal-thickness, metallic-coated steel sheet.

3. Post Cap shall be domed and formed from steel sheet and match thickness of post.

4. Wire for steel post and cable fence: 5/8” diameter wire

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5. Fasteners: Manufacturer's standard corrosion-resistant.

B. FENCE AND GATE MATERIALS

1. Plates, Shapes, and Bars: ASTM A 36/A 36M.

2. Tubing: ASTM A 500/A 500M, cold-formed steel tubing or Class 1 (new) drill pipe grade E or better.

C. MISCELLANEOUS MATERIALS

1. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded.

PART 3: EXECUTION

A. EXAMINATION

1. Examine areas and conditions, with Installer present, for compliance with requirements for site clearing, earthwork, pavement work, construction layout, and other conditions affecting performance of the Work.

2. Do not begin installation before final grading is com-pleted unless otherwise permitted by Government.

3. Proceed with installation only after unsatisfactory condi-tions have been corrected.

B. FENCE INSTALLATION

1. Set posts in holes according to drawings

2. Space posts uniformly as specified in drawings

3. If holes are over-excavated, backfill with free-draining, compacted, crushed aggregate to meet grade.

4. Do not leave open holes overnight.

5. Over-excavate mud and fill hole with free-draining, com-pacted, crushed aggregate to height 3” below bottom of fence post if water enters fence hole.

6. Install posts level in both directions.

7. Install posts in line.

8. Align wire hole parallel to fence line.

C. Dewatering: All work shall be executed under dewatered conditions. Dispose of excess water by using natural drainage ways near the site to the extent of their natural capacity when no erosion or other damage is encountered. The Contractor shall pro...