Specifications for Construction Contracts

8/22/2019 Specifications for Construction Contracts

1/487

(210-VI-NEH, January 2009)

NationalEngineeringHandbook

Part 642 Specifcations orConstructionContracts


2/487

National Engineering HandbookSpecifcationsPart 642


Originally issued May 2001

First Revision issued November 2005

Second Revision issued January 2009

The U.S. Department o Agriculture (USDA) prohibits discrimination in all

its programs and activities on the basis o race, color, national origin, age,

disability, and where applicable, sex, marital status, amilial status, parentalstatus, religion, sexual orientation, genetic inormation, political belies,

reprisal, or because all or a part o an individuals income is derived rom

any public assistance program. (Not all prohibited bases apply to all pro-

grams.) Persons with disabilities who require alternative means or commu-

nication o program inormation (Braille, large print, audiotape, etc.) should

contact USDAs TARGET Center at (202) 720-2600 (voice and TDD). To fle a

complaint o discrimination write to USDA, Director, Ofce o Civil Rights,

1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800)

795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity

provider and employer.


3/487

i(210-VI-NEH, January 2009)

Part 642 Specifcations orConstruction Contracts

Contents: Chapter 1 General Contract Specifcation Procedures

642.0100 General 11

(a) Nonederal construction contract ................................................................11

(b) Federal construction contract .....................................................................11

(c) Purpose ...........................................................................................................11

642.0101 Terms and defnitions 12

642.0102 Applicability 12

642.0103 National standard construction specifcations 13

642.0104 National standard material specifcations 13

642.0105 Selecting appropriate national standard specifcations 14

642.0106 Interim specifcations 14

642.0107 One-time-use specifcations 15

642.0108 Bid schedule 16

(a) Designating the items o work ......................................................................16

(b) Division o the work into items ....................................................................16

(c) Numbering and titling ....................................................................................17

(d) Pay items .........................................................................................................17

642.0109 Contract specifcations 18

(a) Compilation .....................................................................................................18

(b) Identiying .......................................................................................................18

(c) Measurement and payment ...........................................................................19

(d) Preparing construction details .....................................................................19

Examples Example 11 Typical bid schedule ..................................................................17

Example 12 Typical construction detail or a specifc contract .............110

or excavation

Example 13 Typical construction detail to cross reerence a .................114

subsidiary item


4/487

National Engineering HandbookSpecifcations or Construction

Contracts

Part 642

ii (210-VI-NEH, January 2009)

Chapter 2 National Standard Construction Specifcations

- - - - - - - Eective date - - - - - - - -Instruction Specifcation

Site preparation

1Clearing 1/09 5/01

2Clearing and Grubbing 1/09 5/01

3Structure Removal 1/09 5/01

4Channel Clearing and Shaping 1/09 5/01

5Pollution Control 1/09 1/09

6Seeding, Sprigging, and Mulching 1/09 5/01

7Construction Surveys 1/09 1/09

8Mobilization and Demobilization 1/09 5/01

9Trafc Control 1/09 5/0110Water or Construction 1/09 1/09

Foundation work

11Removal o Water 1/09 5/01

12Relie Wells 1/09 5/01

13Piling 1/09 5/01

14Pressure Grouting 1/09 5/01

Earthwork

21Excavation 1/09 5/01

22(Reserved)

23Earthfll 1/09 1/0924Drainfll 1/09 5/01

25Rockfll 1/09 5/01

26Topsoiling 1/09 5/01

27Diversions and Waterways 1/09 5/01

28Lime Treated Earthfll 1/09 1/09

29Soil-Cement 1/09 1/09

Concrete and reinorcement

31Concrete or Major Structures 1/09 1/09

32Structure Concrete 1/09 1/09

33Shotcrete 1/09 1/09

34Steel Reinorcement 1/09 1/0935Concrete Repair 1/09 1/09

36Roller Compacted Concrete 1/09 1/09


5/487

iii


Contracts

Part 642


- - - - - - - Eective date - - - - - - -Instruction Specifcation

Nonmetal pipe conduits and drains

41Reinorced Concrete Pressure Pipe Conduits 1/09 5/01

42Concrete Pipe Conduits and Drains 1/09 5/01

43Clay Pipe 1/09 5/01

44Corrugated Polyethylene Pipe 1/09 1/09

45Plastic Pipe 1/09 1/09

46Tile Drains 1/09 11/05

Metal pipe conduits

51Corrugated Metal Pipe 1/09 5/01

52Steel Pipe 1/09 5/01

53Ductile-Iron Pipe 1/09 5/01

Riprap and slope protection

61Rock Riprap 1/09 1/09

62Grouted Rock Riprap 1/09 5/01

63Treatment o Rock Suraces 1/09 5/01

64Gabion Baskets and Mattresses 1/09 1/09

Water control gates and valves

71Water Control Gates 1/09 5/01

Miscellaneous structural work

81Metal Fabrication and Installation 1/09 5/0182Painting Metalwork 1/09 11/05

83Timber Fabrication and Installation 1/09 1/09

84Painting Wood 1/09 11/05

Miscellaneous construction

91Chain Link Fence 1/09 5/01

92Field Fence 1/09 1/09

93Identifcation Markers or Plaques 1/09 5/01

94Contractor Quality Control 1/09 1/09

95Geotextile 1/09 5/01

96Field Ofce 1/09 5/01

97Flexible Membrane Liner 1/09 11/05

98Geosynthetic Clay Liner 1/09 11/05


6/487


Contracts

Part 642

iv (210-VI-NEH, January 2009)

Chapter 3 National Standard Material Specifcations

Eective date

Foundation materials

511Steel Piles 5/01

512Wood Piles 5/01

513Precast Concrete Piles 5/01

514Cast-In-Place Concrete Piles With Shells 5/01

Aggregates and rock

521Aggregates or Drainfll and Filters 5/01

522Aggregates or Portland Cement Concrete 5/01

523Rock or Riprap 11/05

524Aggregates or Roller Compacted Concrete 11/05

Concrete materials

531Portland Cement 5/01

532 Supplementary Cementitious Materials 1/09

533Chemical Admixtures or Concrete 11/05

534Concrete Curing Compound 1/09

535Preormed Expansion Joint Filler 5/01

536Sealing Compound or Joints in Concrete and Concrete Pipe 1/09

537Nonmetallic Waterstops 5/01

538Metal Waterstops 5/01

539Steel Reinorcement (or concrete) 1/09

Nonmetal pipe and fttings

541Reinorced Concrete Pressure Pipe 5/01

542Concrete Culvert Pipe 11/05

543Nonreinorced Concrete Pipe 5/01

544Clay Pipe and Drain Tile 11/05

545(Reserved)

546(Reserved)

547Plastic Pipe 1/09

548Corrugated Polyethylene Pipe 1/09

Metal pipe and fttings551Coated Corrugated Steel Pipe 11/05

552Aluminum Corrugated Pipe 5/01

553Ductile-Iron Pipe 5/01

554Steel Pipe 5/01

Water control gates and valves

571Slide Gates 1/09

572Flap Gates, Metal 1/09

573Radial Gates 5/01


7/487

v


Contracts

Part 642


Eective date

Miscellaneous structural materials581Metal 11/05

582Galvanizing 5/01

583Coal Tar-Epoxy Paint 11/05

584Structural Timber and Lumber 5/01

585Wood Preservatives and Treatment 1/09

Miscellaneous construction materials

591Field Fencing Material 1/09

592Geotextile 1/09

593Lime 11/05

594Flexible Membrane Liner 1/09

595Geosynthetic Clay Liner 11/05


8/487


Contracts

Part 642



9/487

(210VINEH, January 2009) 11

Chapter 1 General Contract SpecifcationProcedures

642.0100 General

(a) Non-Federal construction contract

The body o a non-Federal construction contract con-

sists o the general provisions, bid schedule, specifca-

tions, drawings, and, when applicable, special provi-

sions and wage rate decisions. The general provisions

are administrative and technical requirements that

apply to all items o construction and to all contracts.

In Natural Resources Conservation Service (NRCS)

practice, these general provisions are urnished in a

preprinted Form SCS-AS-43. The special provisionsare administrative instructions and requirements that

apply to the specifc contract and are prepared by the

responsible administrative ofce.

The bid schedule tabulates the items o work or

which direct payment will be made, shows the estimat-

ed quantities o work and the units o measurement,

and provides space or the entry o contract prices.

The specifcations and drawings include the technical

details and requirements o the contract. The ofce

responsible or the design o the work develops the

drawings and specifcations and, in cooperation withthe responsible administrative ofce, the bid schedule.

(b) Federal construction contract

The body o a Federal construction contract is assem-

bled ollowing the uniorm contract ormat shown in

Federal Acquisition Regulations (FAR) 14.201-1. Each

section o an invitation or bids contains specifc kinds

o inormation or the contractor.

SectionAistheStandardForm1442

Construction Contract cover sheet.

SectionBisthebidscheduleasinnon-Federal

contract.

SectionCisthespecicationsanddrawingsor

a reerence to their attachment as Section J.

SectionD,packaginginstructions,isusually

blank.

SectionsE,F,andGhavetheinspection,per-

ormance time, and contract administration

data, respectively.

SectionHisthemostsimilarsectiontothe

non-Federal special provisions.

SectionIistheboilerplate provisions common

to all construction contracts. It may include

most clauses by reerence.

SectionJisthelistofattachments. SectionsK,L,andMareinstructionsand

certifcations necessary to complete the bid

package properly. These three sections do not

become part o the contract.

The technical specialist responsible or the design

must work closely with the contracting ofcer to as-

sure that the contract clauses are coordinated with the

design requirements.

(c) Purpose

The purpose o Part 642, Specifcations o the National

Engineering Handbook (NEH) is to establish national

standard construction and material specifcations and

procedures or developing interim and one-time-use

specifcations, preparing contract specifcations, and

bid schedules.


10/487

Part 642

National Engineering Handbook

General Contract Specifcation

Procedures

Chapter 1

(210VINEH, January 2009)12

642.0101 Terms and deinitions

The ollowing terms and defnitions are established or

use in all NRCS documents, publications, and corre-

spondence relating to specifcations or construction

contracts:

National Standard Construction Specifcations

State the technical and workmanship requirements or

the various operations required in the construction o

the works, the methods o measurement, and the basis

o payment.

National Standard Material SpecifcationsState

the quality o materials to be incorporated in the per-

manent works.

Interim SpecifcationsSpecifcations prepared by

States or use in contracts that include construction

items or materials not covered by national standard

specifcations.

Standard SpecifcationsNational standard and

interim specifcations.

Unique or One-Time-Use SpecifcationsSpeci-fcations or construction or material items that are

unique to the contract and are not covered by national

standard specifcations or State interim specifcations.

The specifcations are prepared within the State and

intended or one-time-use only in a specifc contract.

Construction DetailsPrepared by the design ofce

and state the special requirements peculiar to a spe-

cifc work o construction. They may take the orm o

written addenda to the standard construction specif-

cations or notes on the drawings.

Contract specifcationsThe complete specifca-

tions prepared or a specifc contract and consist o

an assembly o appropriate standard and one-time-use

specifcations supplemented by lists and descriptions

o items o work and construction details.

642.0102 Applicability

The national standard specifcations in this handbook

were prepared or use in construction work adminis-

tered by NRCS. They were developed to

ensureadherencetolawsandregulations,

preventconictswithinthespecicationsand

between the specifcations and other contract

requirements,

preventomissionofessentialelements,

preventinclusionofextraneousmaterials,

provideauniformbasisforinterpretation,and

ensureuniformqualityofNRCSprojectworks.

NRCS policy on preparation and use o these specifca-

tionsisintheNationalEngineeringManual,Part542,

Specifcations.

National standard specifcations are prepared or con-

struction operations and construction materials re-

quentlyrequiredinNRCSprojects.Nationalstandard

construction specifcations are in chapter 2 o thishandbook. National standard material specifcations

are in chapter 3. These specifcations will be modifed

bytheConservationEngineeringDivisionwheneverit

appears appropriate to do so. Suggestions or changes,

additions, deletions, or corrections should be submit-

tedtotheDirectoroftheConservationEngineering

Division.


11/487

Part 642



Procedures

Chapter 1

(210VINEH, January 2009) 13(210VINEH, January 2009)

642.0103 National standard con-

struction speciications

National standard construction specifcations are to

be used verbatim. Some national standard specifca-

tions have sections that contain alternative methods

o achieving work. The specifcation writer may delete

the methods not used in the contract; however, the

method selected must be used verbatim. Only methods

identifed in the specifcation may be deleted rom the

nationalstandardconstructionspecication.Details

on how to delete the methods and revise the section

are included in the instructions.

Each o the construction specifcations is supplement-

ed by instructions or its use. These instructions state

the applicability o the specifcation and describe the

items o inormation that must be included in the con-

tract specifcations and drawings to completely defne

the specifed item. They also give the conditions under

which it may be appropriate to use any o the various

methods listed. These supplementary instructions are

included or use by design personnel and are not to be

included in contract specifcations.

All construction specifcation packages shall includeConstruction Specifcation 94, Contractor Quality

Control. I single specifcations are used or conserva-

tion practices, Construction Specifcation 94 is recom-

mended.

642.0104 National standard

material speciications

National standard material specifcations are prepared

or those materials whose quality must be uniorm in

all areas o applicability. National standard material

specifcations are to be used verbatim. They are not

supplemented by instructions or use. Items o inor-

mation that must be included in the contract specifca-

tions to completely describe the materials required or

a specifc contract are listed in the instructions or use

o the construction specifcations to which the mate-

rial specifcations are complementary.

Reerence to material specifcations may be in the na-

tional standard construction specifcations or may be

placed in the construction details (either written in the

specifcations or noted on the contract drawings).


12/487

Part 642



Procedures

Chapter 1


642.0105 Selecting appropriatenational standard speciications

The type o work to be done or the type o structural

detail required oten dictates the construction method

or sequence. The specifcation requirements must

be compatible with the methods that must be used.

The specifcation writer must also make sure that the

methods selected in one specifcation are compat-

iblewiththoseselectedinanother.Forexample,the

methodofdesignatingpaylimitsforexcavationand

earthfll.

642.0106 Interim speciications

States may prepare interim specifcations or use in

their State or items not covered by national stan-

dard construction and material specifcations (such

as methods or materials unique to a given locality) i

there is a recurring need. Interim specifcations are not

to be developed i an industry standard is available,

OMBA119.

Interim construction specifcations must:

Conformtotheformatofthenationalstandard

construction specifcations.

Benumberedconsecutivelystartingwith

number 200 and be dated and identifed. In-

terim construction specifcations prepared by

the ormer National Technical Centers (NTC's)

that continue to have application need to be

adapted as a State interim and numbered ac-

cordingly.

Containtermsanddenitionsthatarecompat-

ible with those used in the national standard

construction specifcations.

Beconciseandfreefromambiguousclauses.

Containmeasurementandpaymentclauses

written in the same manner as those in the

national standard construction specifcations.

Interim construction specifcations are to be used ver-

batim. Some interim specifcations have sections that

contain alternative methods o achieving work. The

specifcation author may delete the methods not used

in the contract; however, the method selected must be

used verbatim. Only methods identifed in the specif-

cation may be deleted rom the interim construction

specication.Detailsonhowtodeletethemethods

and revise the section are included in the instructions.


13/487

Part 642



Procedures

Chapter 1


Interim material specifcations must:

Conformtotheformatofthenationalstandard material specifcations.

Benumberedconsecutivelystartingwiththe

number 300 or States and be dated and identi-

ed.Materialspecicationspreparedbythe

ormer NTC's that continue to have application

need to be adapted by the State and numbered

accordingly.

DescribematerialsbyreferencetoAmerican

SocietyforTestingandMaterials(ASTM)and

other accepted reerence standards and specif-

cations.

Interimmaterialspecicationsaretobeused

verbatim.

The geographical area o application o each interim

construction or material specifcation must be identi-

fed at the lower let corner o each page o the specif-

cation. The identiying symbol should consist o NRCS

anddatefollowedbytheStateabbreviationandproj -

ect name:

NRCS 12/99

OKWhiteCloud#2

States are to review and concur with all interim speci-fcations when conducting peer reviews or designs

conducted by another State. For Class VIII engineering

designapprovallevelprojects,interimspecications

need to be submitted and identifed when transmitting

totheDirectoroftheConservationEngineeringDivi-

sionforreview.Whenthespecicationforamaterial

coveredbyanexistingASTMorotheracceptedspeci -

fcation or standard has requirements other than those

includedintheexistingspecicationorstandard,the

engineering sta that prepared the specifcation shall

prepareawrittenjusticationforthedeviation.This

justicationissubmittedwiththespecicationtothe

State that will conduct the peer review.

Interim specifcations that are technically sound and

have proven to be national in scope will be considered

or inclusion in the national standard construction and

material specifcations.

642.0107 One-time-use specii-

cations

Unique or one-time-use specifcations are prepared

or construction work or construction materials not

covered by standard specifcations and are or one-

time-use in a specifc contract. These specifcations

shall be approved beore their use by the state conser-

vation engineer. I such one-time-use specifcations are

later considered or adoption as interim specifcations,

they shall be submitted or approval according to the

procedures prescribed or review o interim specifca-

tions. One-time-use specifcations shall be ormatted

according to the national standard specifcations. They

shall be numbered in the 400's or construction specif-

cations and in the 600's or material specifcations. The

conditions and requirements or interim specifcations

are also applicable to one-time-use specifcations.


14/487

Part 642



Procedures

Chapter 1


642.0108 Bid schedule

The bid schedule orms the basis or payments to the

contractor and must list all items o work or which di-

rect payment will be made. Since the efciency o con-

tract administration is directly aected by the manner

in which the schedule is organized, the preparation o

the bid schedule requires the close cooperation o the

responsible design engineer and the contracting o-

fcer. Operating procedures must include provision or

administrative review o the bid schedule in the early

stages o its development as well as upon completion.

Example11showsatypicalbidschedule.

(a) Designating the items o work

Considerablejudgmentbasedondesign,construction,

andcontractingexperienceisrequiredtodividethe

work into items or inclusion in the bid schedule. The

schedule must be sufciently comprehensive to allow

the contractor to make reasonably accurate estimates

o the cost o doing the work. It must also enable the

contracting ofcer to keep orderly records o work

progress and to accurately compute progress and

fnal payments due. On the other hand, the numbero scheduled items should be held to the minimum

needed to accomplish these purposes. The practi-

cableextenttowhichtheworkshouldbedividedinto

scheduleditemsmustbejudgedinlightofthequanti-

ties o work involved and local construction practices

and procedures. The bid schedule should include

those items necessary to result in air and equitable

treatment o the owner(s) and the contractor.

(b) Division o the work into items

Formaximumefciencyofcontractadministration,the work should be divided into items based on the ol-

lowing principles:

The work should be divided into items in a man-

ner that ensures reasonable refnement o unit

prices. The cost o any given type o work will vary

accordingtoitscomplexityandthecomplicatingef -

ects o the conditions under which it must be done.

Generally,thescopeofabiditemshouldbelimitedto

agiventypeofworkofaparticularorderofcomplex -

ityandcost.Exceptionstothisrulemaybejustiedon

smalljobsinvolvingrelativelysmallquantitiesofwork.

The work should be divided into items to prevent

conusion o supplemental job requirements.

Similar types o work may involve dierent sizes o

components or dierent qualities o materials. To

prevent conusion, each variation o a given type o

work should be established as a separate item o work.

Also, the grouping o nonrelated items or similar com-

ponents o separate works o improvement should be

avoided.

The work should be divided into items in a man-

ner consistent with the cost sharing arrange-ments established in the watershed plan and the

project agreement. Formanyprojects,certainworks

o improvement may be paid or entirely or partly by

the local sponsoring organization. To acilitate ac-

countingofprojectcosts,theworkforsuchimprove-

ments should be established as separate items o work

in the bid schedule.


15/487

Part 642



Procedures

Chapter 1


(c) Numbering and titling

Biditemsmustbenumberedconsecutivelybeginningwith the number one (1). Subitem numbers shall not

be used. Each bid item shall be given a descriptive

title that distinctly identifes the work to be done.All

items that involve signifcant quantities o work

(or signifcant procurement cost in the case o

preabricated units) should be designated as a

separate bid item.

(d) Pay items

Measurableitemswhosequantitiesmaybesubjectto

variation should be designated or payment on a unit

price basis. The estimated quantity o work and units

o measurement must be shown in the schedule. Items

that involve signifcant quantities o work, but are

either not conveniently measurable or have quantities

thatarenotsubjecttovariation,maybedesignatedfor

payment on a lump-sum basis.

An item involving arelatively insignifcant quantity

ofworkthatissubjecttoonlyminor variation may

be designated as a subsidiary item. Compensation orthis item is included in the payment or another item

that has a logical relationship to the subsidiary item.

Subsidiary items are not numbered nor listed in the

bid schedule, but must be designated and described

inthe"ItemsofWorkandConstructionDetails"ofthe

itemandalsoreferencedinthe"ItemsofWorkand

ConstructionDetails"sectionofthespecicationfor

the pay item to which it is subsidiary.

Units o measurement must be compatible with the

measurement and payment clauses o the specifca-

tions.

Example 11 Typical bid schedule

Bid Schedule

Item Work Spec. Est. Unit Unit Amountno. quan. price

1 Clearing,classA 1 12.5 acre _____ ________

2 Mobilizationanddemobilization 8 1 job xxxx ________

3 Excavation,common 21 300 cubicyard _____ ________

4 Rockriprap 61 500 ton _____ ________

Total $__________


16/487

Part 642



Procedures

Chapter 1


642.0109 Contract speciications

Contract specifcations shall consist o an assembly o

the appropriate standard and one-time-use construc-

tion and material specifcations. Each construction

specifcation will be supplemented by a section en-

titledItems of Work and Construction Details. The

supplemental section o each construction specifca-

tion shall

bepreparedespeciallyforeachinvitation,

designatebynumberandtitleallofthebid

items(exactlyasnumberedandtitledinthe

bid schedule) to be perormed in conormance

with the requirements o the specifcation,

designateallsubsidiaryitemstobeperformed

in conormance with the requirements o the

specifcation,

foreachdesignateditemofwork,statesuch

supplemental requirements and items o inor-

mation as are needed to relate the construction

specicationtothejobathand,

bearthenumberthatisnextinsequenceafter

the number o the last section o the standard

specifcation, and

beinsertedintothecontractspecicationas

the last page(s) o the construction specifca-

tion.

(a) Compilation

A contract specifcation must conorm verbatim to the

standardconstructionormaterialspecicationexcept

where a section in the standard specifcation contains

more than one method, only the applicable method

need be included. The methods selected must becompatible with one another and with the conditions,

materials, and methods prevalent in the area o appli-

cability and the requirements o the specifed structural

element.

Morethanonemethodmaybeincludedinanysec -

tion o a construction specifcation, in which case, the

methodsshallbenumberedsequentially(i.e.,Method1,Method2,).Themethodapplicabletoeachre -

spective item o work, material, measurement, and

payment shall be identifed in the construction detail

section. The optional methods are identifed in the

instructions or each construction specifcation.

Whenonlyonemethodofmeasurementandpayment

is included in the construction specifcation, dele-

tions are required in the standard specifcation. In

addition to deletion o the other methods contained

inthestandardspecication,thetextAll Methods

The following provisions apply to all methods of

measurement and payment must be deleted romthelastparagraphandtheremainingtextleftjustied.

This guidance is included with the instruction associ-

ated with each construction specifcation.

(b) Identiying

The title o each contract specifcation shall be the

same as that o the standard construction or material

specifcation. One-time-use specifcations shall have

titlesthatdonotconictwiththestandardspecica-

tions in the contract.

Whenaconstructionspecicationismodiedfora

specicjobbydeletingspecicmethodsfromthestan -

dardspecication,thestateabbreviationandproject

name shall be added. This indicates to the user and

reviewers that the standard specifcation has been

modifed. The date at the bottom o the pages o the

national standard specifcation shall not be changed.

The pages should be renumbered consecutively.

WhenaStateelectstouseaspecicselectionof

methods rom a standard construction specifcation as

a State construction specifcation, the State version o


17/487

Part 642



Procedures

Chapter 1


this specifcation shall bear the same number and date

as the standard construction specifcation plus the

State name added. The pages should be renumberedconsecutively.

Whenaconstructionspecicationisnotmodiedby

deleting specifc methods rom the standard specif-

cation, the numbering and ooter inormation on the

standard specifcation shall not be changed.

TheItems of Work and Construction Detailspages

shall have ooters containing the ollowing inorma-

tion:

NRCSeffectivedateoftheIWCD

StateabbreviationProjectName

Specicationnumber

Pagenumber

The inormation shall be displayed consistently

throughout specifcations.

(c) Measurement and payment

Each construction specifcation contains a section that

describes the method o measurement to be used or

the work perormed or the material urnished and the

payment method or ull compensation o the work

described. The basis or designating separate work

itemswasdescribedin642.0108,Bidschedule.Within

the conditions described therein, each o the construc-

tion specifcations may be modifed to include a lump

sum payment method. The ormat and wording o the

method is generally as ollows:

For items o work or which specifc lump

sum prices as established in the contract, the

quantity o work will not be measured or pay-

ment. Payment or this item will be made atthe contract lump sum price or the item and

will constitute ull compensation or comple-

tion o the work.

(d) Preparing constructiondetails

The construction details or each item o work should

be concise. They normally include the ollowing items.

(An individual instruction or use o each construction

specifcation is in chapter 2 o this handbook.)

Denitionsanddescriptionsneededtodene

the scope o work.

Informationrequiredtodenethetypesand

qualities o materials to be used in the work.

Specialrequirements,suchasfoundation

preparation, grading tolerances, provisions or

coordinating with other work, and obtaining

"as built" geology data.

Otheritemsofinstructionnecessarytodene

the construction requirements peculiar to the

item o work.

The construction details should contain only inorma-

tion and instructions needed to relate the construction

specicationtothejob.Provisionsofthespecication

do not need to be emphasized or interpreted by repeti-

tion o the provisions in the construction details in the

same or similar words.

In preparing construction details, notes on the draw-

ings have the eect o specifcations in defning the

type and quality o materials to be urnished and in

defning the scope o the work. Supplemental inorma-

tion or requirements that are directly related to details

shown on the drawings may be stated in notes on the

drawings rather that in the specifcations i that ar-

rangement more conveniently and eectively conveys

the inormation to the individuals benefting rom the

data. The engineer responsible or the design must use

goodjudgmentindecidingwherevarioussupplemental

datashouldbelocatedformaximumeffectiveness.Generally,informationshownbynotesonthedrawings

need not be repeated in the specifcations; however, i

there is a compelling reason or doing so, great care


18/487

Part 642



Procedures

Chapter 1


mustbetakentopreventconictsbetweenthenotes

and the specifcations.

Constructiondetailsshouldnotconictwithorinter-

pret the general terms and conditions o the contract.

They may modiy a clause in the standard specifca-

tions i the standard specifcation contains the phrase

"unlessotherwisespecied."

NRCS05/01

INBUSSERONL-1 216

Example 12 Typicalconstructiondetailforaspeciccontractforexcavation

11. Items o Work and Construction Details

Items o work to be perormed in conormance with this specifcation and construction details are:

a. BidItem7,Excavation,Foundation,Common

(1) Thisitemshallconsistoftheexcavationofunsuitablematerialsfromthefoundationof

the main dam in areas that are located within the base area o the dam, but outside thelimits o cuto trench.

(2) Thedepthofexcavationrequiredisestimatedve(5)feetatthecentralhalfofthebase

area o the dam and tapering to about two (2) eet at the edges. The actual depths and

extentoffoundationexcavationwillbedeterminedbytheengineerafterexaminationof

the material encountered.

(3) Thesidesofallfoundationexcavationsshallbesteeperthan11/2horizontalto1verti-

cal.

(4) InSection5,UseofExcavatedMaterials,method1willapply.

(5) InSection6,DisposalofWasteMaterials,method2willapply.

(6) InSection10,MeasurementandPayment,method1willapply.

Example12showsatypicalconstructiondetailpre-

paredforaspeciccontractforexcavation.Thisin-

ormation is inserted at the end o Construction Speci-cation21,Excavation.Example13showsatypical

construction detail to cross-reerence a subsidiary

item,earthll(seeexample12,itemg).Thisdetail

would be written or a specifc contract and inserted

into Construction Specifcation 23, Earthfll.


19/487

Part 642



Procedures

Chapter 1


Example 12 TypicalconstructiondetailforaspeciccontractforexcavationContinued

b. BidItem8,Excavation,CutoffTrench,Common

(1) Thisitemconsistsofallcommonexcavationrequiredwithinthelimitsofthecutoff

trench as shown on the drawings.

(2) Thedepthofexcavationrequiredisestimatedtoextendgenerallydowntoneareleva-

tion1105.Theactualdepthsofexcavationwillbedeterminedbytheengineerafter

examinationofthematerialsencountered.




c. BidItem9,Excavation,CutoffTrench,Rock

(1) Thisitemconsistsofallrockexcavationrequiredwithinthelimitsofthecutofftrench

as shown on the drawings.

(2) InSection4,Blasting,ablastingplanshallbefurnishedtotheengineerforreviewprior

to the start o any blasting operations.




d. BidItem10,Excavation,PrincipalSpillway,Common

(1) Thisitemconsistsofallcommonexcavationrequiredwithinthelimitsshownonthe

drawings or the installation o the pipe conduit, riser ooting, and outlet structure

exceptforthatportionoftheexcavationlocatedwithinthelimitsofthecutofftrenchor

abovethelowerlimitoffoundationexcavation.




NRCS05/01

INBUSSERONL1 217


20/487

Part 642



Procedures

Chapter 1


NRCS05/01

INBUSSERONL1 218


e. BidItem11Excavation,PrincipalSpillway,Rock

(1) Thisitemconsistsofallrockexcavationrequiredwithinthelimitsshownonthedrawings

fortheinstallationofthepipeconduit,riserfooting,andoutletstructureexceptforthat

portionoftheexcavationlocatedwithinthelimitsofthecutofftrench.

(2) InSection4,Blasting,ablastingplanshallbeprovidedtotheengineerforreviewpriorto

the start o any blasting operations.




f. BidItem12,Excavation,EmergencySpillway,Common

(1) Thisitemconsistsofallcommonexcavationrequiredwithinthelimitsshownonthe

drawings or the construction o the emergency spillway.

(2) Thegradingtolerancesforemergencyexcavationcontrolsection(EmergencySpillway

Stations 11+30 to 12+10) shall be plus or minus 0.1 oot rom grade shown. The grading

tolerancesforotheremergencyspillwayexcavationsshallbeplusorminus0.2footfrom

the grades shown.

(3) InSection5,UseofExcavationMaterials,method1willapply.




21/487

Part 642



Procedures

Chapter 1


g. SubsidiaryItem,Excavation,Borrow,Common

(1) Thisitemconsistsofallcommonexcavationrequiredtoobtainsuitableearthllmateri-

als required to construct the permanent works.

(2) InSection8,BorrowExcavation,allborrowareasshallbegradedtopreventtheponding

o water. Finished slopes shall not be steeper than our (4) horizontal to one (1) vertical.

(3) InSection10,MeasurementandPayment,noseparatepaymentwillbemadeforborrow

excavation.CompensationforborrowexcavationwillbeincludedinthepaymentforBid

Item 13, Earthfll Zone I.

NRCS05/01

INBUSSERONL1 219



22/487

Part 642



Procedures

Chapter 1


10. Items o work and construction details

Items o work to be perormed in conormance with this specifcation and construction details are:

a. BidItem13,Earthll,ZoneI

(1) This item consists o placing and compacting all suitable materials required to construct

Zone I o the embankment and the desilting pond. It also includes backflling the cuto

trench and constructing a two (2) oot thick blanket on the let abutment as shown on the

drawings.

(2) InSection2,Materials,thefollowingshallapply:

(a) The material or Zone I shall be the natural deposits o gravel, sands, silts, and clays

obtainedfromborrowarea1andsuitablematerialsfromtherequiredexcavations.

(b) MaterialselectedtoconstructionZoneI,Earthll,shallcontainnotlessthan35per-

cent fnes (material passing the No. 200 sieve) when determined on a dry weight basis

o the portion o the mass smaller than three (3) inches in nominal diameter, when

testedinaccordancewithASTMD-1140.

(c) Unsuitable or oversize material shall be removed rom fll materials beore placement

on the embankment and shall be wasted in the designated disposal locations shownonthedrawings.Acceptablerockmaterialslargerthansix(6)inchesindiameter

shall be removed rom Zone I and placed in Zone II or placed as rock riprap as appli-

cable.

(3) InSection4,Placement,thellshallbeplacedinlayersnotexceedingnine(9)inchesin

thicknesspriortocompaction.Themaximumsizeofrockincorporatedinthellmatrix

shallbesix(6)inches.

(4) InSection5,ControlofMoisture,themoisturecontentofthellmatrixatthetimeofcom-

paction shall be maintained with the range o two (2) percentage points below to two (2)

percentage points above optimum moisture content.

(5) InSection6,Compaction,compactionshallbeClassA.Thellmatrixshallbecompacted

toatleastninety-ve(95)percentofthemaximumdensitydeterminedbycompactiontests

ofthellmaterialsbytheappropriatemethodoutlinedinASTMD698.

(6) InSection9,MeasurementandPayment,Method2and6willapply.Suchpaymentwill

constitutefullcompensationforrelatedSubsidiaryItem,Excavation,Borrow,Common.

NRCS05/01

INBUSSERONL1 239

Example 13 Typical construction detail to cross reerence a subsidiary item


23/487

(210VINEH, January 2009) 1I1

Chapter 2 National Standard ConstructionSpecifcations

Instructions or use

Construction Specifcation 1Clearing

1. ApplicabilityConstruction Specication 1 is applicable to the clear-

ing o vegetation at construction sites where grubbing

is not required.

2. Material specifcationsNo material specications complement Construction

Specication 1.

3. Included items

Items to be included in contract specications anddrawings ollow:

a. When the area(s) to be cleared is denable on

the project layout map or other construction

plan view drawing, the limits o each class (A,

B, or C as dened in Section 2 Classication) o

clearing must be shown and clearly dened.

b. When the area(s) to be cleared is not denable

on the drawings (which may occur or many

channel improvement projects), the extent

o each class o clearing required must be

described by notes and by designation o right-o-way boundaries and station limits. The ull

extent o work to be perormed must be clearly

dened.

c. When replacement plants are required because

o damage caused by the contractor, the speci-

ic size, number, and species needs to be speci-

ed in section 8. Example: "Any tree removed

that was designated to remain or is irreparably

damaged shall be replaced with two 15-gallon

valley oak (Quercus lobata) as directed by the

contracting ocer."

d. When measurement and payment are identiedto be in accordance with method 2, section 7,

the survey line(s) along which the length o

cleared area(s) is to be measured must be des-

ignated. The lateral extent and station reaches

o the area(s) to be cleared must be clearly

dened.

e. Areas in which disposal o reuse/waste mate-

rial is not allowed or areas where disposal is

restricted or limited must be clearly dened or

shown on the drawings.

. Required minimum depth o earth cover over

buried materials, i applicable.

g. Required surace grading over buried materi-

als, i applicable. Existing natural fow patterns

onto or rom the construction site onto other

properties must be a consideration in the nal

grading.

h. Restrictions on the use o explosives, i any.

i. Restrictions on the burning o combustible

materials as a disposal procedure, i any.

j. Special requirements to control erosion, water

pollution, and air pollution, i applicable. Re-

quirements o this specication must be com-

patible with any and all requirements outlined

in Construction Specication 5, Pollution

Control, when included as part o the contract.

k. Method(s) o measurement and payment i the

standard specication includes more than onemethod.

4. Methods

Section 7, Measurement and payment

Methods 1 and 3Intended or use when the

area(s) to be cleared is extensive and can be dened

in area units on the ground and clearly shown on the

drawing(s). Section 8 should speciy horizontal or

surace measurements to be used to determine area

cleared. A reservoir project is a good example o this

type o site.

Method 2Intended or use when the area(s) to be

cleared is long and narrow, and cannot be clearly de-

ned on the drawings. Section 8 should speciy hori-

zontal or surace measurements to be used to deter-

mine area cleared. A channel right-o-way is a typical

example o this type o site.


24/487

Part 642


National Standard Construction

Specications

Chapter 2

(210VINEH, January 2009)1I2


cleared cannot be measured practically and when it

is reasonable to expect that variations in the quantityo clearing to be perormed will be minor. For method

4, the procedures that will be used to determine the

amount o work satisactorily completed or progress

payment need to be identied in section 8. Options

may include:

Anonsiteagreed-toestimateofthepercentof

work satisactorily completed at time o pro-

gess payment cuto.

Requirethecontractortoprovidemeasure-

ments o all areas and those that have been

satisactorily cleared, and use a percentage othe total item.

Othersuitableandfairmethods,oneofwhich

could be related to the construction schedule.

When all but one method is deleted or use in a con-

tract specication, delete rom the last paragraphAll

MethodsThe ollowing provisions apply to

all methods o measurement and payment. Let

justiy the remaining text.

5. Items o work and construction detailsStarting at the top o page 12, prepare and outline

job specic "Items o Work and Construction Details"

(IWCD) in accordance with these instructions.


25/487

11(210VINEH, May 2001)

1. ScopeThe work shall consist o the clearing and disposal o trees, snags, logs, brush, shrubs, stumps, and rubbish rom

the designated areas.

2. ClassifcationUnless otherwise specied in section 8, clearing will be classied according to the ollowing denitions:

Class ARequires that trees and other woody vegetation be removed so that the remaining stumps extend no

higher than 4 inches above the ground surace.

Class BRequires that trees and other woody vegetation be removed so that the remaining stumps extend no

higher than 12 inches above the ground surace.

Class CRequires that trees and other woody vegetation be removed as near the ground surace as conventional

tools or eld conditions will permit or as specied in section 8.

3. Protection o existing vegetationTrees and other woody vegetation designated to remain undisturbed shall be protected rom damage throughout

the entire construction period. Any damage resulting rom the contractor's operations or neglect shall be repaired

by the contractor.

Earthll, stockpiling o materials, vehicular parking, and excessive oot or vehicular trac shall not be allowed

within the dripline o vegetation designated to remain in place. Vegetation damaged by any o these or similar ac-

tions shall be replaced with viable vegetation o the same species or as specied in section 8 and approved by the

contracting ocer.

Any cuts, skins, scrapes, or bruises to the bark o the vegetation shall be careully trimmed and local nursery ac-

cepted procedures used to seal damaged bark.

Any limbs or branches 0.5-inch or larger in diameter that are broken, severed, or otherwise seriously damagedduring construction shall be cut o at the base o the damaged limb or branch fush with the adjacent limb or tree

trunk.

All roots 1 inch or larger in diameter that are cut, broken, or otherwise severed during construction operations

shall have the end smoothly cut perpendicular to the root. Roots exposed during excavation or other operations

shall be covered with moist earth and/or backlled as soon as possible to prevent them rom drying.

4. MarkingThe limits o the areas to be cleared will be marked by stakes, fags, tree markings, or other suitable methods. Trees

to be let standing and uninjured will be designated by special markings placed on the trunks at a height o about 6

eet above the ground surace.

5. ClearingAll trees not marked or preservation and all snags, logs, brush, shrubs, stumps, rubbish, and similar materials shall

be cleared rom within the limits o the marked areas.

Construction Speciication 1Clearing


26/487

12 (210VINEH, May 2001)

6. DisposalAll materials cleared rom the designated areas shall be disposed o at locations shown on the drawings or in a

manner specied in section 8. The contractor is responsible or complying with all local rules and regulations and

the payment o any and all ees that may result rom the disposal at locations away rom the construction location.

7. Measurement and paymentMethod 1For items o work or which specic unit prices are established in the contract, the cleared area is

measured to the nearest 0.1 acre. Payment or clearing is made or the total area within the designated limits at the

contract unit price or the specied class o clearing. Such payment will constitute ull compensation or all labor,

equipment, tools, and all other items necessary and incidental to the completion o the work.

Method 2For items o work or which specic unit prices are established in the contract, the length o the

cleared area is measured to the nearest ull station (100 eet) along the line designated on the drawings or in the

specications. Payment or clearing is made or the total length within the designated limits at the contract unit

price or the specied class o clearing. Such payment will constitute ull compensation or all labor, equipment,

tools, and all other items necessary and incidental to the completion o the work.

Method 3For items o work or which specic unit prices are established in the contract, the cleared areas is

measured within the specied limits to the nearest 0.1 acre. The cleared areas are determined by measuring the

width cleared, within the specied limits, at representative sections and multiplying the average width between

sections by the linear distance between sections. Payment or clearing is made at the contract unit price or theitem and shall constitute ull compensation or all labor, equipment, tools, and all other items necessary and inci-

dental to the completion o the work.

Method 4For items o work or which specic lump sum prices are established in the contract, payment or

clearing is made at the contract lump sum prices. Such payment shall constitute ull compensation or all labor,


All MethodsThese provisions apply to all methods o measurement and payment. Compensation or any item o

work described in the contract, but not listed in the bid schedule is included in the payment or the item o work to

which it is made subsidiary. Such items and the items to which they are made subsidiary are identied in section 8.



27/487

Part 642



Specications

Chapter 2



ing and grubbing o woody vegetation and the removal

o trash and rubbish at construction sites.


Specication 2.

3. Included items


a. When the area(s) to be cleared and grubbed, in-

cluding area(s) o rubbish removal, is denable

on the project layout map or other construction

plan view, the limits must be shown and clearly

dened.

b. When the area(s) to be cleared and grubbed is

not denable on the drawings (which may oc-

cur or many channel improvement projects),

the extent o clearing and grubbing required

must be described by notes and by designationo right-o-way boundaries and station limits.

c. When replacement plants are required because

o damage caused by the contractor, the speci-

ic size, number, and species needs to be speci-

ed in section 7. Example: "Any tree removed

that was designated to remain or is irreparably

damaged shall be replaced with two 15-gallon

valley oak (Quercus lobata) as directed by the

contracting ocer."

d. When measurement and payment are identi-

ed to be in accordance with method 2, section

6, the survey line(s) along which the cleared

and grubbed area(s) length is to be measured

must be designated. The lateral extent and

station reaches o the area(s) to be cleared and

grubbed must be clearly dened.

e. Areas in which disposal o reuse/waste mate-

rial is not allowed or areas where disposal is

restricted must be clearly dened or shown on

the drawings.

. Special requirements or grubbing depth, i

required.

g. Required depth o earth cover over buried ma-

terials, i applicable.

h. Required surace grading over buried materi-

als, i applicable. Existing natural fow patterns

onto the construction site or rom the site onto

other properties must be a consideration in the

nal grading.

i. Restrictions on the use o explosives, i any.

j. Restrictions on the burning o combustible


k. Special requirements or control o erosion,

water pollution, and air pollution, i applicable.

Requirements o this specication must be

compatible with any and all requirements out-

lined in Construction Specication 5, Pollution


l. Method(s) o measurement and payment i the

standard specication includes more than one

method.

4. MethodsSection 6, Measurement and payment


cleared and grubbed is extensive and can be dened

in units o area on the ground and on the drawings.

Section 6 should speciy horizontal or surace mea-

surements to be used to determine area cleared and

grubbed. A reservoir area is a typical example o this

type o site.

Instructions or use

Construction Speciication 2Clearing and Grubbing


28/487

Part 642



Specications

Chapter 2



cleared and grubbed is long and narrow. Section 6

should speciy horizontal or surace measurements tobe used to determine length o clearing and grubbing.

A channel right-o-way is a typical example o this type

o site.


cleared and grubbed is extensive, but the vegetation

consists mainly o scattered trees, stumps, or snags

that can be measured individually.


cleared and grubbed cannot be measured practically

and when it is reasonable to expect that variations in

the estimated quantity o work to be perormed willnot occur ater the contract is awarded. For method

4, the procedures that will be used to determine the

amount o work satisactorily completed or progress

payment need to be identied in section 7. Options

may include:


work satisactorily completed at time o cuto.

Requirethecontractortoprovidemeasure-ments o all areas and identiy those that have

been satisactorily cleared and grubbed, and

use a percentage o the total bid item.


could be related to construction schedule.

Whenallbutonemethodisdeletedforusein

a contract specication, delete rom the last

paragraphAll MethodsThe ollowing pro-

visions apply to all methods o measure-

ment and payment. Ater deleting, let justiy

the remaining text.

5. Items o work and construction detailsStarting at the top o page 23, prepare and outline




29/487

21(210VINEH, May 2001)

1. ScopeThe work consists o clearing and grubbing and disposal o trees, snags, logs, brush, stumps, shrubs, and rubbish

rom the designated areas.

2. Protection o existing vegetationTrees and other vegetation designated to remain undisturbed shall be protected rom damage throughout the dura-

tion o the construction period. Any damages resulting rom the contractor's operations or neglect shall be repaired

by the contractor.

Earthll, stockpiling o materials, vehicular parking, and excessive oot or vehicular trac shall not be allowed

within the drip line o vegetation designated to remain in place. Vegetation damaged by any o these or similar ac-

tions shall be replaced with viable vegetation o the same species, similar condition, and like size unless otherwise

approved by the contracting ocer.



Any limbs or branches 0.5 inch or larger in diameter that are broken, severed, or otherwise seriously damaged

during construction shall be cut o at the base o the damaged limb or branch fush with the adjacent limb or tree

trunk. All roots 1-inch or larger in diameter that are cut, broken, or otherwise severed during construction opera-

tions shall have the end smoothly cut perpendicular to the root. Roots exposed during excavation or other opera-

tions shall be covered with moist earth or backlled as soon as possible to prevent the roots rom drying out.

3. MarkingThe limits o the area(s) to be cleared and grubbed will be marked by stakes, fags, tree markings, or other suitable

methods. Trees to be let standing and uninjured will be designated by special markings placed on the trunk about

6 eet above the ground surace.

4. Clearing and grubbingAll trees not marked or preservation and all snags, logs, brush, stumps, shrubs, rubbish, and similar materials shall

be cleared rom within the limits o the designated areas. Unless otherwise specied, all stumps, roots, and root

clusters that have a diameter o 1 inch or larger shall be grubbed out to a depth o at least 2 eet below subgrade or

concrete structures and 1 oot below the ground surace at embankment sites and other designated areas.

5. DisposalAll materials cleared and grubbed rom the designated areas shall be disposed o at locations shown on the draw-

ings or in a manner specied in section 7. The contractor is responsible or complying with all local rules and regu-

lations and the payment o any and all ees that may result rom disposal at locations away rom the project site.

6. Measurement and paymentMethod 1For items o work or which specic units prices are established in the contract, the cleared and

grubbed area is measured to the nearest 0.1 acre. Payment or clearing and grubbing is made or the total area

within the designated limits at the contract unit price. Such payment will constitute ull compensation or all labor,


Construction Speciication 2Clearing and Grubbing


30/487

22 (210VINEH, May 2001)

Method 2For items o work or which specic unit prices are established in the contract, the length o the

cleared and grubbed area is measured to the nearest ull station (100 eet) along the line designated on the drawing

or identied in the specications. Payment or clearing and grubbing is made or the total length within the des-

ignated limits at the contract unit price. Such payment will constitute ull compensation or all labor, equipment,

tools, and all other items necessary and incidental to the completion o the work.

Method 3For items o work or which specic unit prices are established in the contract, each tree, stump, and

snag having a diameter o 4 inches or larger and each log having a diameter o 4 inches or larger and a length o 10

eet are measured beore removal. The size o each tree and snag is determined by measuring its trunk at breastheight above the natural ground surace. The size o each log is determined by measuring the butt and by measur-

ing its length rom butt to tip. The size o each stump is measured at the top. Diameter is determined by dividing

the measured circumerence by 3.14.

Payment or clearing and grubbing o each tree, stump, and snag having a diameter o 4 inches or larger and each

log having a diameter o 4 inches or larger and a length o 10 eet or larger is made at the contract unit price or its

size designation as determined by the ollowing schedule:

Measured diameter Size designation

(in) (in)

4 to 8 6

8 to 12 1012 to 24 18

24 to 36 30

36 to 60 48

Over 60 60

The sum o such payments shall constitute ull compensation or clearing and grubbing (including the clearing and

grubbing o smaller trees, stumps, snags, logs, brush, shrubs, and roots), applicable permits and associated ees,

and rubbish removal. Such payment shall constitute ull compensation or all labor, equipment, tools, and all other

items necessary and incidental to the completion o the work.

Method 4For items o work or which specic lump sum prices are established in the contract, payment or

clearing and grubbing is made at the contract lump sum price. Such payment shall constitute ull compensation orall labor, equipment, tools, and all other items necessary and incidental to the completion o the work.

All MethodsThe ollowing provisions apply to all methods o measurement and payment. Compensation or any

item o work described in the contract, but not listed in the bid schedule will be included in the payment or the

item o work to which it is made subsidiary. Such items and the items to which they are made subsidiary are identi-

ed in section 7.



31/487

Part 642



Specications

Chapter 2


1. ApplicabilityConstruction Specication 3 is applicable to the re-

moval o all types o structures (including ences)

rom construction sites.


Specication 3.

3. Included items


a. The location and description o each structure

or ence to be removed or the area rom which

structures are to be removed must be shown on

the drawings. I structure removal is designated

by area limits, the location and description

o all buried structures to be removed must

be shown together with area boundaries. All

known inormation regarding the structure

must be shown.

b. The location and types o structures or encesto be preserved in place or to be salvaged must

be shown on the drawings.

c. The required extent and depth o removal.

d. The locations o storage areas or salvaged

structural materials must be shown on the

drawings or indicated by appropriate notations.

Note: A separate bid item may be required as

a result o cost sharing arrangements when

structure salvage is included in the contract.

e. Areas where disposal o reuse material is not

permitted or areas where disposal is limited, iknown. I reuse materials must be disposed o

outside the right-o-way or work limits, make

appropriate notation.

. Structures, including ences, to be removed by

others.

g. Required minimum depth o earth cover, soil

density requirements, and surace grading over

buried materials, i applicable.

h. Restrictions on the use o explosives, i any.

i. Special requirements or control o erosion,

water pollution, and air pollution, i applicable.

Requirements o this specication must be

compatible with any and all requirements out-

lined in Construction Specication 5, Pollution


j. Method(s) o measurement and payment, i the


method.

4. MethodsSection 2, Marking

Method 1Intended or use when the structures to

be removed are o signicant size or when structures

at several easy to identiy locations must be removed.

Whenever possible, this method is preerred over

method 2.

Method 2Used when several small structures lo-

cated within the work limits are to be removed.

Section 3, Removal

Method 1Compatible with Method 1, Marking, and

must be used accordingly.

Method 2Compatible with Method 2, Marking, and

must be used accordingly.

Section 6, Measurement and payment

Method 1For measurement and payment on a unit

basis.

Instructions or use

Construction Speciication 3Structure Removal


32/487

Part 642



Specications

Chapter 2


Method 2For payment on a lump sum basis. For

this method, section 7 should include the procedures

that will be used to determine extent o satisactorycompleted work or progress payment purposes.

When using only one o the methods in the contract,

deleteAll MethodsThe ollowing provisions

apply to all methods o measurement and pay-

ment. Let justiy the remaining text.


Starting at the top o page 32, prepare and outline




33/487

31(210VINEH, May 2001)

1. ScopeThe work shall consist o the removal, salvage, and disposal o structures (including ences) rom the designated

areas.

2. MarkingMethod 1Each structure or structure part to be removed will be marked with stakes, fags, paint, or other suit-

able method.

Method 2The area boundaries rom which structures must be removed will be marked using stakes, fags, paint,

or other suitable method. Structures to remain undisturbed or to be salvaged will be designated by special mark-

ings.

3. RemovalMethod 1All structures designated or removal in the contract shall be removed to the specied extent and

depth.

Method 2Within the areas so marked, all visible and buried structures identied shall be removed to the speci-

ed extent and depth.

4. SalvageStructures or structure parts that are designated to be salvaged shall be careully removed and neatly placed in the

specied or approved storage location. Salvaged structures that are capable o being disassembled shall be disman-

tled into individual members or sections. Such structures shall be neatly and systematically match marked with

paint beore disassembly. All connectors and other parts shall be marked to indicate their proper location within

the structure and shall be astened to the appropriate structural member or packed in suitable containers.

Material rom ences designated to be salvaged shall be placed outside the work area on the property on which

the ence was originally located. Fence wire shall be rolled into uniorm rolls o suitable size and neatly piled withother salvaged materials. Posts and rails shall be neatly stacked.

5. Disposal o reuse materialsReuse materials resulting rom structure removal shall be disposed o in a manner and at locations specied in

section 7 o this specication or in an acceptable manner and at locations approved by the contracting ocer. Dis-

posal by burning shall be in accordance with local rules and regulations.

6. Measurement and paymentMethod 1For items o work or which specic unit prices are established by the contract, payment or the

removal o each structure unit, except ences, is made at the contract unit price. Fences removed or removed and

salvaged are measured to the nearest linear oot. Payment or ence removal or removal and salvage is made at the

contract unit prices or each type and size o ence.

Such payment will constitute ull compensation or all labor, equipment, tools, applicable permits and associated

ees or burning and disposal o reuse, and all other items necessary and incidental to the completion o the work.

Method 2For items o work or which specic lump sum prices are established by the contract, payment or

structure removal is made at the contract lump sum price.

Construction Speciication 3Structure Removal


34/487

32 (210VINEH, May 2001)

Such payment will constitute ull compensation or all labor, equipment, tools, applicable permits and associated

ees or burning and disposal o reuse, and all other items necessary and incidental to the completion o the work.


item o work described in the contract, but not listed as a contract line item number in the bid schedule, is included

in the payment or the item o work to which it is made subsidiary. Such items and items to which they are made

subsidiary are identied in section 7 o this specication.



35/487

Part 642



Specications

Chapter 2



ing, removal, and disposal o woody and other veg-

etation; removal and disposal o trash and rubbish;

and the earth shaping o the bottom and sides o the

channel. This specication is applicable or natural

foodways, constructed channels, and other drainage

systems.


Specication 4.

3. Included itemsItems to be included in contract specications and

drawings

a. The special markings indicating trees to be let

standing, undisturbed, and uninjured must be

described.

b. For Section 2, Protection o Existing Vegeta-

tion, when the specic size o replacement

plant is known or is desired, speciy the num-ber, size, and species o the replacement in sec-

tion 8. Example: "Any tree designated to remain

or is irreparably damaged shall be replaced

with two 15-gallon valley oak (Quercus lobata)

as directed by the contracting ocer."

c. Areas in which disposal o reuse material or

other waste materials resulting rom channel

clearing and shaping activities is not allowed or

areas where disposal is limited or restricted, i

known.

d. Restrictions on the burning o combustible


e. The reaches o the stream or channel where

shaping is to be perormed.

. An illustration or description that provides the

shaping requirements.

g. Method(s) o measurement and payment i the


method.

4. MethodsSection 7, Measurement and Payment

Method 1Intended or irregularly shaped reaches

that need to be physically measured in the eld.

Section 8 should speciy horizontal or surace mea-

surements to be used to determine area cleared and

shaped.

Methods 2 and 3Intended or long channel reaches

that have a uniorm width and minor variations in

width, respectively. Section 8 should speciy horizontal

or surace measurements to be used to determine area

cleared and shaped.

Method 4Intended or use where the amount o

work required is relatively consistent throughout the

described work area. For this method, procedures that

will be used to determine the amount o work satis-

actorily completed or progress payment need to be

identied in section 8. Options may include:


work satisactorily completed at time o cuto.

Requirethecontractortoprovidesupporting

calculations to determine extent o work satis-

actorily completed.


could be related to the construction schedule.

Instructions or use

Construction Speciication 4Channel Clearing and Shaping


36/487

Part 642



Specications

Chapter 2


Method o measurement and paymentWhen all but one method are deleted or use in a

contract specication, delete rom the last paragraphAll MethodsThe ollowing provisions apply to

all methods o measurement and payment. Let

justiy the remaining text.

5. Items o work and constructiondetailsStarting at the top o page 43, prepare and outline




37/487

41(210VINEH, May 2001)

1. ScopeThe work consists o clearing designated areas by the removal and disposal o trees, logs, stumps, shrubs, brush,

and rubbish, and the shaping o the channel.

2. Protection o existing vegetationTrees and other vegetation designated to remain undisturbed shall be protected rom damage throughout the dura-

tion o the construction period. Any damages resulting rom the contractor's operations or neglect shall be repaired

by the contractor.

Earthll, stockpiling o materials, vehicle or equipment parking, and excessive oot or vehicle trac shall not be

allowed within the drip line o vegetation designated to remain in place. Vegetation damaged by any o these or

similar actions shall be replaced with viable vegetation o the same species, similar condition, and like size unless

otherwise approved by the contracting ocer.



Any limbs or branches 0.5 inch or larger in diameter that are broken, severed, or otherwise seriously damaged

during construction shall be cut o at the base o the damaged limb or branch fush with the adjacent limb or tree

trunk.

All roots 1 inch or larger in diameter that are cut, broken, or otherwise severed during channel shaping shall have

the end smoothly cut perpendicular to the root. Roots exposed during channel shaping operations shall be covered

with moist soil as soon as possible to prevent roots rom drying out.

3. MarkingThe limits o the area(s) to be cleared and shaped are marked by stakes, fags, paint, tree markings, or other suit-

able methods or as specied in section 8 o this specication, or they will be shown on the drawings. Trees toremain standing, undisturbed, and uninjured are designated by special markings.

4. ClearingTrees and other vegetation marked or clearing shall be cut o as near the ground surace as conventional tools

and equipment normally permit. All trees not marked or preservation and all snags, logs, brush, shrubs, stumps,

and rubbish shall be cleared rom within the area limits identied.

5. DisposalAll woody material, vegetation, and rubbish resulting rom clearing rom designated areas shall be disposed o at

the locations and in a manner shown on the drawings, or as specied in section 8 o this specication.

6. ShapingThe channel bottom and side slopes shall be shaped as shown on the drawings. The resulting shaped channel sur-

ace shall be reasonably smooth. Material excavated during the channel shaping operation shall be removed rom

the channel and disposed o as specied in section 8 o this specication.

7. Measurement and paymentMethod 1For items o work or which specic unit prices are established by the contract, the designated cleared

and shaped area is measured and the area determined to the nearest 0.1 acre. Payment or clearing and shaping is

Construction Speciication 4Channel Clearing and Shaping


38/487

42 (210VINEH, May 2001)

made at the contract unit price or the item and shall constitute ull compensation or all labor, equipment, tools,

applicable permits and associated ees or burning and disposal o reuse, and all other items necessary and inci-

dental to the satisactory completion o the work.

Method 2For items o work or which specic unit prices are established by the contract, the length o the

cleared and shaped channel designated is measured to the nearest 100 eet. Payment or clearing and shaping is

made at the contract unit price or the item and shall constitute ull compensation or all labor, equipment, tools,

applicable permits and associated ees or burning and disposal o reuse, and all other items necessary and inci-

dental to the satisactory perormance o the work.

Method 3For items o work or which specic unit prices are established by the contract, the cleared and

shaped area(s) is measured and the area determined to the nearest 0.1 acre. The designated cleared and shaped

area(s) is determined rom the measured width at representative sections and the distance between the sections.

Payment or clearing and shaping is made at the contract unit price or the item and shall constitute ull compensa-

tion or all labor, equipment, tools, applicable permits and associated ees or burning and disposal o reuse, and

all other items necessary and incidental to the satisactory completion o the work.

Method 4For items o work or which specic lump sum prices are established by the contract, the extent o

clearing and shaping is not measured or determined or payment. Payment or clearing and shaping is made at the

contract lump sum price or the item and shall constitute ull compensation or all labor, equipment, tools, appli-

cable permits and associated ees or burning and disposal o reuse, and all other items necessary and incidental

to the satisactory completion o the work.


item o work described in the contract, but not listed in the bid schedule is included in the payment or the item o

work to which it is made subsidiary. Such items and items to which they have been made subsidiary are identied

in section 8 o this specication.



39/487

Part 642



Specications

Chapter 2


1. ApplicabilityThis specication is applicable to the control or reduc-

tion o pollution rom all construction activities.

2. Material specifcationsNo material specications complement this speci-

cation. Any material specications required shall be

specied in section 8 o this specication.

3. Included itemsItems to be included in contract specications and

drawings ollow:

a. The area to be controlled should be dened,

and the limits to be treated shall be shown on

the drawings or described in the construction

specications, or both.

b. I areas to be treated are not easily denable on

the site map, such as some channel projects,

the extent o treatment shall be ully described

by notes or designated by stations or right-o-

way limits.

c. Restrictions or special requirements limiting

the selection o best management practices or

control or treatment should be specied.

d. Special requirements designating the sequence

o construction operations are included. These

requirements might require temporary or pro-

longed shutdown o some or all construction

operations.

e. Alternate methods o control, i applicable.

. Any restrictions on amount o area disturbed

beore treatment is started.

g. Any restriction on timing o installation, opera-

tion, or removal o any o the controls or treat-

ments. Stabilization and structural practices,

such as diversions, stream crossings, sediment

basins, sediment lters, and waterways, are

typically specied as temporary and to be re-

moved. I any o these practices are to remain

in place, speciy in section 8, along with any

maintenance or changes required beore nal

acceptance.

h. Special pollution control requirements, such as

sectional excavation or placement o materials,

burying operations, waste area reclamation,

blasting, clearing, dredging, or other unique

construction procedure or operation.

i. Water and chemicals or dust control is covered

in section 5. Payment or water or dust controlmay be included as an item o work under this

specication or Construction Specication

10, Water or Construction. The intent is to be

covered in section 8 o this specication.

j. Any other special requirements pertaining to

this specication, including reerence to appli-

cable state and local laws and regulations.

k. Storm Water Pollution Prevention Plan (SWP-

PP) requirements. Environmental Protection

Agency or State requirements shall be ollowed

as applicable.

l. Method o measurement and payment.

4. Construction methods to be applied incontracts to control pollutionThe ollowing list does not include all possible ero-

sion and pollution control methods. All personnel

concerned with planning, design, and construction

should study the site careully and speciy needed

practices required to control erosion, sediment, and

air pollution. Pollution control specications are to be

coordinated with the SWPPP requirements developed

to meet the National Pollution

Documents

Specifications for Construction Contracts