A06_-_140L1721Q0050_-_Section_311000_1.pdf

BLM CO State Office

5/1/2020 SITE CLEARING

BLM-CO GJFO Grand Valley Open OHV Staging Area Phase II 311000 - 1

SECTION 311000 - SITE CLEARING

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. Protecting existing vegetation to remain.

2. Removing existing vegetation.

3. Stripping and stockpiling topsoil.

4. Stripping and stockpiling rock.

5. Removing above- and below-grade site improvements.

B. Related Requirements:

1. None this section

1.3 MEASUREMENT AND PAYMENT

A. No separate payment shall be made for site clearing. The cost of site clearing work other than fence removal is to be included in the unit price bid for items under Section 31 20 00 Earth Moving.

1.4 DEFINITIONS

A. Subsoil: Soil beneath the level of subgrade; soil beneath the topsoil layers of a naturally occurring soil profile, typified by less than 1 percent organic matter and few soil organisms.

B. Surface Soil: Soil that is present at the top layer of the existing soil profile. In undisturbed areas, surface soil is typically called "topsoil," but in disturbed areas such as urban environments, the surface soil can be subsoil.

C. Topsoil: Top layer of the soil profile consisting of existing native surface topsoil or existing in-place surface soil; the zone where plant roots grow.

BLM-CO GJFO Grand Valley Open OHV Staging Area Phase II 311000 - 2

D. Plant-Protection Zone: Area surrounding individual trees, groups of trees, shrubs, or other vegetation to be protected during construction identified by COR.

E. Vegetation: Trees, shrubs, groundcovers, grass, and other plants.

1.5 MATERIAL OWNERSHIP

A. Materials to be stockpiled shall remain Government’s property and shall remain on site.

1.6 FIELD CONDITIONS

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

1. Do not close or obstruct streets without permission from Government and authorities having jurisdiction.

2. Use existing routes as possible until access is closed.

3. Do not create new routes for construction.

B. Salvageable Improvements: Carefully remove items indicated to be salvaged and store per direction of the Contract Officer

C. Utility Locator Service: Notify Call Before You Dig Colorado811 for area where Project is located before site clearing.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Satisfactory Soil Material: Requirements for satisfactory soil material are specified in Section 312000 "Earth Moving."

1. Obtain approved borrow soil material off-site when satisfactory soil material is not available on-site.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protect and maintain benchmarks and survey control points from disturbance during construction.

B. Verify that shrubs, and other vegetation within protection zones have been identified.

C. Protect existing site improvements to remain from damage during construction.

BLM-CO GJFO Grand Valley Open OHV Staging Area Phase II 311000 - 3

1. Restore damaged improvements to their original condition, as acceptable to Owner.

3.2 TREE AND PLANT PROTECTION

A. Protect shrubs and plants remaining on-site

3.3 EXISTING UTILITIES

A. Interrupting Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others.

3.4 STOCKPILING ROCK

A. Stockpile rock away from edge of excavations without intermixing with other materials.

1. Limit height of rock stockpiles to 48 inches.

2. Do not stockpile rock within protection zones.

3. Do not stockpile rock in designated traffic areas public uses (e.g., parking lot, road, trail, track).

3.5 DISPOSAL OF SURPLUS AND WASTE MATERIALS

A. Remove demolished materials, and waste materials including trash and debris, and legally dispose of them off Government’s property.

END OF SECTION 311000