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construction specification for clearing, close cut clearing

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					                ONTARIO
                PROVINCIAL                                                                     METRIC
                STANDARD                                                                      OPSS 201
                SPECIFICATION                                                            NOVEMBER 2007




                        CONSTRUCTION SPECIFICATION FOR
                    CLEARING, CLOSE CUT CLEARING, GRUBBING,
                  AND REMOVAL OF SURFACE AND PILED BOULDERS

                                         TABLE OF CONTENTS

201.01                  SCOPE

201.02                  REFERENCES

201.03                  DEFINITIONS

201.04                  DESIGN AND SUBMISSION REQUIREMENTS

201.05                  MATERIALS - Not Used

201.06                  EQUIPMENT - Not Used

201.07                  CONSTRUCTION

201.08                  QUALITY ASSURANCE - Not Used

201.09                  MEASUREMENT FOR PAYMENT

201.10                  BASIS OF PAYMENT


APPENDICES

201-A                   Commentary



201.01                  SCOPE

This specification covers the requirements for the removal of trees, brush, bushes, stumps, windfalls,
surface boulders, and piled boulders.

201.01.01               Specification Significance and Use

This specification has been developed for use in provincial- and municipal-oriented Contracts. The
administration, testing, and payment policies, procedures, and practices reflected in this specification
correspond to those used by many municipalities and the Ontario Ministry of Transportation.

Use of this specification or any other specification shall be according to the Contract Documents.




Page 1                                                                       Rev. Date: 11/2007 OPSS 201
201.01.02                  Appendices Significance and Use

Appendices are not for use in provincial contracts as they are developed for municipal use, and then, only
when invoked by the Owner.

Appendices are developed for the Owner’s use only.

Inclusion of an appendix as part of the Contract Documents is solely at the discretion of the Owner.
Appendices are not a mandatory part of this specification and only become part of the Contract
Documents as the Owner invokes them.

Invoking a particular appendix does not obligate an Owner to use all available appendices. Only invoked
appendices form part of the Contract Documents.

The decision to use any appendix is determined by an Owner after considering their contract
requirements and their administrative, payment, and testing procedures, policies, and practices.
Depending on these considerations, an Owner may not wish to invoke some or any of the available
appendices.


201.02                     REFERENCES

When the Contract Documents indicate that provincial-oriented specifications are to be used and there is
a provincial-oriented specification of the same number as those listed below, references within this
specification to an OPSS shall be deemed to mean OPSS.PROV, unless use of a municipal-oriented
specification is specified in the Contract Documents. When there is not a corresponding provincial-
oriented specification, the references below shall be considered to be to the OPSS listed, unless use of a
municipal-oriented specification is specified in the Contract Documents.

When the Contract Documents indicate that municipal-oriented specifications are to be used and there is
a municipal-oriented specification of the same number as those listed below, references within this
specification to an OPSS shall be deemed to mean OPSS.MUNI, unless use of a provincial-oriented
specification is specified in the Contract Documents. When there is not a corresponding municipal-
oriented specification, the references below shall be considered to be the OPSS listed, unless use of a
provincial-oriented specification is specified in the Contract Documents.

This specification refers to the following standards, specifications, or publications:

Ontario Provincial Standard Specifications, Construction

OPSS 206         Grading

Ontario Government Publications

Crown Forest Sustainability Act, 1994, S.O. 1994, c. 25


201.03                     DEFINITIONS

For the purpose of this specification, the following definitions apply:

Clearing means the cutting of all standing trees, brush, bushes, and other vegetation to a maximum
height of 300 mm above original ground level and the removal of felled materials and windfalls.

Close Cut Clearing means the cutting of all standing trees, stumps, brush, bushes, and other vegetation
at original ground level and the removal of felled materials and windfalls.




Page 2                                                                          Rev. Date: 11/2007 OPSS 201
Grubbing means the removal of all stumps, roots, embedded logs, debris, and second growth.

Piled Boulders means any cobbles, boulders, or rock fragments that have been placed in fencerows or
piles.

Rock means rock as defined in OPSS 206.

Surface Boulder means any boulder or rock fragment that measures 200 mm or greater in any one
dimension, extends a minimum of 200 mm above original ground, and can be removed without
excavation.


201.04                  DESIGN AND SUBMISSION REQUIREMENTS

201.04.01               Crown Forest

Crown forest, as defined by the Crown Forest Sustainability Act, shall not be cut until a permit has been
obtained from the Ministry of Natural Resources.


201.07                  CONSTRUCTION

201.07.01               General

Trees measuring 150 mm or more in diameter, measured 1.0 m above ground, shall be cut, limbed, and
stacked for collection by others. Cut trees shall not be stacked in or transported through areas identified
as being environmentally sensitive in the Contract Documents or elsewhere by an Authority.

When specified in the Contract Documents, cut trees shall be stacked outside and adjacent to the right-
of-way for the property owner, adjacent to and between the stations listed.

Within Crown Land areas specified in the Contract Documents for clearing and close cut clearing,
marketable timber shall be made available for purchase from the Contractor to the holder of the
sustainable forest licence. All cut and stacked trees shall be cut into lengths agreed to by the Contractor
and the sustainable forest licence holder, but in no case exceeding 5.0 m.

All timber not purchased by others or stacked for adjacent landowners is excess material.

The work involved in the clearing and grubbing shall not damage or disturb the area outside the areas
specified in the Contract Documents.

Where work is done in or near waterbodies or waterbody banks, the work shall be according to the
Contract Documents.

201.07.02               Clearing

The work shall consist of clearing all areas of earth excavation, earth surfaces to be covered by
embankments up to and including 1.2 m in height, and any other areas specified in the Contract
Documents.

201.07.03               Close Cut Clearing

The work shall consist of close cut clearing all earth surfaces to be covered by embankments greater than
1.2 m in height, and any other areas specified in the Contract Documents.




Page 3                                                                       Rev. Date: 11/2007 OPSS 201
201.07.04               Grubbing

The work shall consist of grubbing all areas of earth excavation, earth surfaces to be covered by
embankments up to and including 1.2 m in height, and any other areas specified in the Contract
Documents.

Grubbing is not required in swamps.

Mechanical stump cutters are permitted, provided the entire root structure is removed.

Depressions remaining after grubbing shall be backfilled with suitable earth material and compacted to
avoid settlement.

When clearing has been previously completed by others, all second growth, brush, and debris shall be
removed.

Piled boulders and surface boulders that are not specified in the Contract Documents for removal and lie
within areas to be grubbed shall be removed.

201.07.05               Removal of Surface Boulders and Removal of Piled Boulders

The work shall consist of the removal of surface boulders and removal of piled boulders within the areas
specified in the Contract Documents.

Depressions remaining after removal shall be backfilled with suitable earth material and compacted to
avoid settlement.

201.07.06               Mechanical Stump Cutting

The work shall consist of mechanical cutting of stumps to a depth of 150 mm below original grade, as
specified in the Contract Documents.

201.07.07               Management of Excess Material

Management of excess material shall be according to Contract Documents.


201.09                  MEASUREMENT FOR PAYMENT

201.09.01               Actual Measurement

Measurement shall be by area or each as specified in the Contract Documents.

201.09.01.01            Clearing, Close Cut Clearing, and Grubbing

Measurement of clearing, close cut clearing, and grubbing shall be by area or each as specified in the
Contract Documents.

201.09.01.01.01         By Area

Removal shall be measured by area in a horizontal plane in hectares or square metres.

201.09.01.01.02         By Each

For measurement purposes, a count shall be made of the trees or stumps removed.




Page 4                                                                      Rev. Date: 11/2007 OPSS 201
201.09.01.02           Removal of Surface Boulders and Removal of Piled Boulders

Removal shall be measured by area in a horizontal plane in hectares or square metres.

201.09.01.03            Mechanical Stump Cutting

For measurement purposes, a count shall be made of the stumps removed by mechanical cutting.

201.09.02              Plan Quantity Measurement

When measurement is by Plan Quantity, such measurement shall be based on the units shown in the
clauses under Actual Measurement.


201.10                 BASIS OF PAYMENT

201.10.01              Clearing - Item
                       Close Cut Clearing - Item
                       Grubbing - Item
                       Removal of Surface Boulders - Item
                       Removal of Piled Boulders - Item
                       Mechanical Stump Cutting - Item

Payment at the Contract price for the above tender items shall be full compensation for all labour,
Equipment, and Material to do the work.

Areas designated for removal of piled boulders that lie within areas specified in the Contract Documents
for either grubbing or removal of surface boulders shall be paid separately with no deduction from the
grubbing or surface boulder removal item.

Removal of individual boulders that are 1 m3 and greater in volume, shall be paid as rock excavation
according to OPSS 206.




Page 5                                                                     Rev. Date: 11/2007 OPSS 201
Appendix 201-A, November 2007
FOR USE WHILE DESIGNING MUNICIPAL CONTRACTS

Note:    This is a non-mandatory Commentary Appendix intended to provide information to a designer,
         during the design stage of a contract, on the use of the OPS specification in a municipal contract.
         This appendix does not form part of the standard specification. Actions and considerations
         discussed in this appendix are for information purposes only and do not supersede an Owner’s
         design decisions and methodology.

Designer Action/Considerations

The designer should specify the following in the Contract Documents:

- Areas identified for clearing, close cut clearing, grubbing, removal of surface boulders and removal of
  piled boulders, and mechanical stump cutting, in addition to those areas required by this specification.
  (201.07)

- Areas identified as being environmentally sensitive. (201.07.01)

- Areas for clearing and close cut clearing within Crown Land. (201.07.01)

- Areas where cut trees are to be stacked. (201.07.01)

- The areas where work is to be done in or near waterbodies or waterbody banks. (201.07.01)

- Review crown land clearing with Ministry of Natural Resources (MNR) to determine volume of
  marketable timber available. (201.07.01)

- Identify holders of sustainable forest licences and their addresses from the MNR and make them
  available to the Contractor. (201.07.01)

- Method of measurement for clearing, close cut clearing, and grubbing. (201.09.01.01)

Where surface boulders and piled boulders are to be removed that are outside the general grading limits,
the Removal of Surface Boulders and Removal of Piled Boulders items should be used.

Swamp excavation areas do not require grubbing, therefore, designers should not include a grubbing
quantity in the Contract Documents for these areas.

The designer should include an additional quantity for individual boulders over 1 m3 in the rock excavation
quantity. (201.10.01)

Mechanical stump cutting should be considered to avoid damage to adjacent structures that may result
from grubbing.

Piled boulders greater than 100 m3 should be designated for removal and be included for payment in the
tender item for Removal of Piled Boulders regardless of where they are located.

The designer should ensure that the General Conditions of Contract and the 100 Series General
Specifications are included in the Contract Documents.

Related Ontario Provincial Standard Drawings

None




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