Specifications.pdf

11-30-18

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SECTION 32 12 36

ASPHALT SLURRY SEAL COAT

PART 1 - GENERAL

1.1 DESCRIPTION

A. This Section specifies the requirements for placing an asphalt slurry seal coat upon an existing asphalt pavement surface for maintenance purposes in areas as determined from the Drawings and Statement of Work in accordance with these Technical Specifications.

B. The Slurry Seal shall consist of a mixture of an approved emulsified asphalt, mineral aggregate, water, and specified additives, proportioned, mixed and uniformly spread over a properly prepared surface in areas shown on the Drawings or as directed by the Project Manager or Project COR.

C. The Slurry Seal shall leave a homogeneous mat, adhere firmly to the prepared surface, and have a friction-resistant surface texture throughout its service life.

D. All materials, testing, execution, and related work shall conform to the

California Department of Transportation (Caltrans) ‐ “Standard

Specifications” ‐ latest edition.

E. During construction the Contractor is responsible for site safety, traffic control, staging / stockpile area, surface preparation, application conditions / rate / type, quality issues, and post construction conditions and treatments.

F. The Contractor shall protect and preserve all government property, including all existing vegetation, existing landscape features, and monuments within, along, and adjacent to the Project area.

1.2 RELATED WORK

A. See Statement of Work: “Roadway Slurry Seal Improvements” dated

November 30,2018.

B. See Drawings: “Roadway Slurry Seal Improvements” dated November 30, 2018.

1.3 DEFINITIONS

A. Refer to ASTM D8-18 “Terminology Relating to Materials for Roads and

Pavements” for definitions of terms.

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1.4 PROJECT / SITE CONDITIONS

A. Both surface and ambient temperature must be a minimum of 55°F and rising before applying crack fillers, oil spot primers, and slurry seal coat pavement treatment.

B. Apply Slurry Seal coat materials during dry conditions when rain is not imminent or forecast for at least 24 hours after application.

C. The expected high temperature must be at least 65 degrees F within 24 hours after placement of the Slurry Seal.

D. No Slurry Seal shall be applied when there is the possibility of freezing temperatures at the project location within 24 hours after application.

1.5 PRECONSTRUCTION MEETING

A. A minimum of 15 days before starting placement of slurry seal, the

Contractor shall submit:

1. Samples of the aggregate.

2. Samples of asphaltic emulsion or polymer modified asphaltic emulsion.

3. Asphaltic emulsion or polymer modified asphaltic emulsion data.

4. Contractor’s aggregate test results.

B. A minimum of 10 days before starting slurry seal activities, ensure the contractor submits the names of proposed authorized laboratories for quality control testing.

C. The Contractor shall schedule an on-site preconstruction meeting a minimum of 5 days before the start of the slurry seal. At the preconstruction meeting, the Contractor will discuss the quality control program and method for performing each element of work affecting material quality.

D. The following items should be discussed:

1. Frequency of quality control sampling and testing that meets or exceeds specification requirements listed Section 37-1.01D, “Quality

Assurance,” of the Standard Specifications.

2. Time and frequency of submitting test results.

3. Responsibilities of quality control laboratories.

1.6 SUBMITTALS

A. Contractor shall make all Submittals in accordance with Section 37-3.01A

(3) “Submittals” of the Caltrans “Standard Specifications” unless noted otherwise in this Section 32 12 36 “ASPHALT SLURRY SEAL COAT”.

B. Contractor shall submit a copy of the AASHTO accreditation for the laboratory performing the testing of the aggregate and asphaltic emulsion.

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C. Sample Types and Frequencies shall be in conformance with Chapter 6 –

“Sampling and Testing” of the Caltrans “Construction Manual”. All lab testing results shall be emailed directly to the NCA Project Manager and

Contracting Officer Representative (COR) upon completion of the test.

D. Submit a certificate of compliance for each load of crack treatment material if it is on the Caltrans Authorized Material List. If the crack treatment material is not on the Authorized Material List, obtain samples and authorized laboratory test results 20 days before use.

E. Samples for Asphaltic Emulsion Slurry Seal will not need to be delivered to the NCA. Contractor shall furnish the Third-Party Testing Agency with these sample for required testing. Asphaltic Emulsion Test Results shall be forwarded to the Project Manager for review and approval prior to the placement of the material in the Slurry Seal Coat work.

F. Supplier and Type / Grade of asphaltic emulsion to include the type of modifier polymer for polymer modified asphaltic emulsion and a copy of the specified test results for polymer modified asphaltic emulsion.

G. For Asphaltic Emulsions and Polymer Modified Asphaltic Emulsion, the

Contractor shall ensure that an authorized laboratory perform the quality control sampling and testing at the specified frequency and location in conformance with Section 37-3.02A(4)(b) “Quality Control” of the Caltrans

“Standard Specifications”.

H. Aggregate samples shall not be delivered to the NCA. Contractor shall furnish the Third-Party Testing Agency with aggregate samples for required

Contractor paid Third-Party testing.

I. For Aggregate, the Contractor shall ensure that an authorized laboratory must perform sampling and testing at the specified frequency and location in conformance with Section 37-3.01A(4)(b) “Quality Control” of the

Caltrans “Standard Specifications”.

J. Aggregate Test Results shall be forwarded to the Project Manager for review and approval prior to any delivery or placement of the material.

Aggregate test results shall include Gradation, Los Angeles Rattler, Percent of crushed particles, Sand equivalent, and Durability.

K. At least ten (10) days before starting placement of a Slurry Seal Coat

Roadway Treatment, submit a laboratory report of test results and the

Proposed Mix Design from an authorized laboratory.

L. The authorized laboratory must sign the laboratory report and Proposed

Mix Design. This information shall be forwarded by email to the Project

Manager for review and approval prior to any Contractor work. The report

32 12 36 - 4 must clearly show the proportions of aggregate, mineral filler, and emulsified asphalt based on the dry weight of the aggregate.

M. If the Proposed Mix Design consists of the same materials covered by a previous laboratory report, such previous laboratory report must include material testing data performed within the previous three (3) months for consideration and approval by the NCA Project Manager.

N. If any of the materials in the Proposed Mix Design changes, submit a new

Proposed Mix Design and laboratory report at least seven (7) days before starting Slurry Seal work.

O. Submit a Certificate of Compliance as specified for the Emulsion in

Section 94-1.01C of the Caltrans “Standard Specifications” with each delivery of the Asphaltic Emulsion to the NCA Project Manager.

1.7 CONTROL OF WORK AND MATERIALS

A. The Contractor is responsible for the proper coordination of all contractors, utilities, and subcontractors engaged in the work within and adjacent to the contract site.

B. Material Test Methods, Location of Sampling, and Lab Procedures shall be in conformance with the California Department of Transportation

“California Test Methods” and related Technical Memorandums.

C. All work which does not conform to the requirements of the contract and technical specifications shall be considered unacceptable. The COR may direct the Contractor to remove any portion of the work performed under this contract for inspection or for any other purpose.

D. All work shall be in satisfactory condition at the time of contract acceptance. Any work done or materials used without inspection by an authorized Contracting Officer Representative may be ordered removed and replaced at the Contractor's expense.

E. Unacceptable work, whether caused by poor work, defective materials, damage via carelessness or any other cause found to exist prior to the final acceptance of the work, shall be removed immediately and replaced by the Contractor in an acceptable manner as determined by the COR.

F. Minimum sampling and testing frequency of Materials shall be in conformance with Section 37 of the Caltrans “Standard Specifications”.

G. All Materials shall be inspected, sampled, and tested by a state certified testing company paid for by the Contractor. Contractor shall submit to the Project Manager and COR the qualifications and certifications of such

Testing Company within seven (7) days of the Notice to Proceed.

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H. Once the Testing Company is approved by the Project Manager, the

Contractor shall submit to the Project Manager and COR a detailed Testing

Schedule seven (7) days in advance of any work.

I. Whenever any specification provides for Manufacturer’s Certification, Material Certification or Approved List as a Basis of Acceptance, the NCA reserves the right to sample and / or test material in any shipment prior to incorporation in the work.

J. Any material which is rejected because of failure to meet the required tests or that has been damaged to cause rejection, shall be immediately removed from the site of the work by the Contractor at no additional cost to the NCA.

K. All damage, direct or indirect, of whatever nature resulting from the performance of the work or resulting to the work during its progress from whatever cause, including omissions and supervisory acts of the VA, shall be borne and sustained by the Contractor, and all work shall be solely at its risk until it has been finally inspected and accepted by the COR.

L. The Contractor shall manage all surplus materials and waste generated in the performance of the contract in accordance with applicable federal, state, and local laws and regulations.

M. Nothing herein is intended to prevent the Contractor from removing surplus materials or waste to appropriate off-site locations for beneficial reuse, recovery, or recycling purposes.

1.8 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this technical specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. California Department of Transportation (Caltrans)

1. Caltrans “Standard Specifications”

2. Caltrans “California Test Methods”

3. Caltrans “Code of Safe Operating Practices”

4. Caltrans “Construction Manual”

C. American Association of State Highway and Transportation Officials

(AASHTO):

HMWB....................Standard Specifications for Transportation

Materials and Methods of Sampling and Testing, 2018 Edition

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MP32-17.................Standard Specification for Materials for Slurry

Seal

R 66-16.................Standard Practice for Sampling Asphalt

Materials

T 11-05.................Standard Method of Test for Materials Finer

Than 75-µm (No. 200) Sieve in Mineral

Aggregates by Washing

T 27-14.................Standard Method of Test for Sieve Analysis of

Fine and Coarse Aggregates

T 44-14.................Standard Method of Test for Solubility of

Bituminous Materials

T 49-15.................Standard Method of Test for Penetration of

Bituminous Materials

T 51-09.................Standard Method of Test for Ductility of

Asphalt Materials

T 59-16.................Standard Method of Test for Emulsified Asphalts

T 228-09................Standard Method of Test for Specific Gravity of

Semi-Solid Asphalt Materials

T 255-00................Standard Method of Test for Total Evaporable

Moisture Content of Aggregate by Drying

T 302-15................Standard Method of Test for Polymer Content of

Polymer-Modified Emulsified Asphalt Residue and

Asphalt Binders

T 335-09................Standard Method of Test for Determining the

Percentage of Fracture in Coarse Aggregate

D. American Society for Testing and Materials (ASTM):

C29-17..................Standard Test Method for Bulk Density ("Unit

Weight") and Voids in Aggregate

C117-17.................Standard Test Method for Materials Finer than

75-μm (No. 200) Sieve in Mineral Aggregates by

Washing

C127-15.................Standard Test Method for Relative Density

(Specific Gravity) and Absorption of Coarse

Aggregate

C128-15.................Test Method for Relative Density (Specific

Gravity) and Absorption of Fine Aggregate

D5-15...................Standard Test Method for Penetration of

Bituminous Materials

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D8-18...................Terminology Relating to Materials for Roads and

Pavements

D36-14..................Standard Test Method for Softening Point of

Bitumen

D70-18..................Standard Test Method for Density of Semi-Solid

Asphalt Binder

D113-17.................Standard Test Method for Ductility of Asphalt

Materials

D140-16.................Practice for Sampling Bituminous Materials

D242-14.................Standard Specification for Mineral Filler for

Bituminous Paving Mixtures

D244-17.................Standard Test Methods and Practices for

Emulsified Asphalts

D977-17.................Standard Specification for Emulsified Asphalt

D1073-16................Standard Specification for Fine Aggregate for

Asphalt Paving Mixtures

D2042-15................Standard Test Method for Solubility of Asphalt

Materials in Trichloroethylene

D2170-10................Standard Test Method for Kinematic Viscosity of

Asphalts

D2397-17................Standard Specification for Cationic Emulsified

Asphalt

D2419-14................Standard Test Method for Sand Equivalent Value of Soils and Fine Aggregate

D3111-10................Standard Test Method for Flexibility

Determination of Hot-Melt Adhesives by Mandrel

Bend Test Method

D3910-15................Standard Practices for Design, Testing, and

Construction of Slurry Seal

D5249-16................Standard Specification for Backer Material for

Use with Cold- and Hot-Applied Joint Sealants in Portland-Cement Concrete and Asphalt Joints

D5329-16................Standard Test Methods for Sealants and Fillers, Hot-Applied, for Joints and Cracks in Asphalt

Pavements and Portland Cement Concrete

Pavements

D6433-18................Standard Practice for Roads and Parking Lots

Pavement Condition Index Surveys

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D6690-15................Standard Specification for Joint and Crack

Sealants, Hot Applied, for Concrete and Asphalt

Pavements

D6930-10................Standard Test Method for Settlement and Storage

Stability of Emulsified Asphalts

D6933-13................Standard Test Method for Oversized Particles in

Emulsified Asphalts (Sieve Test)

D6936-17................Standard Test Method for Determining

Demulsibility of Emulsified Asphalt

D8099-17................Standard Specification for Asphalt Emulsion

Pavement Sealer (Mineral Colloid or Chemically

Stabilized Type)

E70-15..................Standard Test Method for pH of Aqueous

Solutions with the Glass Electrode

E. International Slurry Seal Surfacing Association (ISSA):

A105-10.................Recommended Performance Guidelines for

Emulsified Asphalt Slurry Seal

PART 2 - MATERIAL / EQUIPMENT

2.1 GENERAL

A. All Materials and Equipment shall conform to the requirements of the following and appropriate sections of the latest version of the Caltrans

“Standard Specifications”, including amendments, and addenda.

B. Where the term "Engineer" or "Commission" is referenced in the Caltrans

“Standard Specifications”, it shall mean the NCA Contracting Officer

Representative (COR).

C. Asphalt Emulsion materials shall be in conformance with Section 94 of the

Caltrans “Standard Specifications”.

D. The Contractor shall provide all required and suitable Slurry Seal equipment, surface preparation equipment, safety & traffic control equipment, hand tools, and other support necessary to perform the work.

2.2 CRACK SEAL

A. Crack Treatment “Materials Acceptance Sampling and Testing Requirements” shall conform with Table 6-1.12 of the Caltrans “Construction Manual”, 2017 or latest edition.

B. Crack sealing material specifications will be in accordance with Section

37-6 CRACK TREATMENTS of the Caltrans “Standard Specifications”.

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C. In California the hot pour rubber-modified asphalt shall be used unless the Contractor can demonstrate the preparation and use of other type of crack seal material.

D. Contractor shall ensure that the hot-applied crack treatment material is sampled at least once per Project in the presence of the COR. Submit test results to the Project Manager and COR within 72 hours.

E. Crack Treatment Material Testing shall be based on a “Type 3” Material as outlined in Section 37-6.01D(3) “Department Acceptance” of the Caltrans

“Standard Specifications”.

2.3 ASPHALT EMULSION

A. Asphalt emulsion used in the Slurry Seal shall be “Polymer Modified

Cationic Quick Setting” (PMCQS 1H) and in conformance with Section 94 of the Caltrans “Standard Specifications”.

B. Asphaltic emulsions must be composed of a bituminous material uniformly emulsified with water and an emulsifying or a stabilizing agent. Polymer modified asphaltic emulsion must contain a polymer.

C. Each load of emulsified asphalt shall be accompanied with a Certificate of Analysis/ Compliance to assure that it is the same as that used in the mix design. Submit to Project Manager and COR.

D. Asphaltic Emulsion must be homogeneous during time of application.

Contractor shall guard against mixing different classes, types, and grades of emulsified asphalt in storage tanks, transports, and distributors.

E. Sample Asphaltic Emulsion under AASHTO T 59-16 “Standard Method of Test for Emulsified Asphalts”.

F. The Project Manager may waive the settlement test if the asphaltic emulsion is used in less than 5 days from the time the sample is taken.

G. NO time during the production, handling, transportation, or storage shall the Asphaltic Emulsion be exposed to temperatures below 40 degrees F.

H. Contractor shall ensure that the Asphaltic Emulsion is not contaminated or mixed with any other emulsion or other chemicals.

2.4 SLURRY SEAL EQUIPMENT

A. All equipment used in the Slurry Seal coat pavement treatment work shall be in conformance with Section 37-3 “SLURRY SEALS AND MICRO-SURFACINGS” of the Caltrans “Standard Specifications”.

B. The Slurry Seal Equipment shall be specifically designed and manufactured to apply slurry seal. The material shall be mixed by an automatic-

32 12 36 - 10 sequenced, self-propelled, slurry seal mixing machine of either truck-mounted or continuous-run design.

C. Mixing and spreading equipment for Slurry Seals must proportion the asphaltic emulsions, water, aggregate, and any additives by volume. Slurry

Seal Equipment Calibration requirements should conform with the

California Test Method CT 109.

D. The mixture shall be placed uniformly by means of a Spreader Box attached to the paver and mechanically equipped with augers to agitate and spread the material evenly throughout the box.

E. The Slurry Seal mixture shall have the proper consistency as it enters the Spreader Box. Spraying of additional water into the Spreader Box will not be permitted.

F. A front seal on the Spreader Box shall be utilized to ensure no loss of the mixture at the road contact point. The rear seal shall act as final strike-off and shall be adjustable.

G. The Spreader Box and rear seal shall be designed and operated to provide uniform mix consistency behind the box. The Spreader Box shall be suitable to side shift to compensate for variations in the pavement width.

H. A burlap drag or other approved screed may be attached to the rear of the

Spreader Box to provide a highly textured uniform surface.

2.5 AGGREGATE

A. Aggregates shall be “TYPE I” clean, high quality, hard, abrasion resistant, durable, and cubical in shape and in conformance with Section

37-3 “SLURRY SEALS AND MICRO-SURFACINGS” of the Caltrans “Standard

Specifications”.

B. Slag and Calcareous aggregates such as limestone and dolostone are not allowed to be used in the Mix Design with the proposed cationic emulsion.

C. Aggregates shall be handled and stored in a manner that avoids contamination, avoids moisture entrapment, prevent inter-mingling, segregation, and degradation of the material.

2.6 MINERAL FILLERS & ADDITIVES

A. Mineral filler may be used to improve mixture consistency and to adjust mixture breaking and curing properties.

B. If a mineral filler is used, it must be Type I or Type II Portland cement.

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C. When a mineral filler is used during Mix Design, the same levels shall also be used during production of the Slurry Seal.

D. Additives may be used to accelerate or retard the break / set of the

Slurry Seal. Appropriate additives, and their applicable use range, should be approved by the laboratory as part of the Mix Design.

2.7 WATER

A. The water shall be free of harmful salts and contaminants. If the quality of the water is in question, it should be submitted to the laboratory with the other raw materials for the Mix Design.

B. It is the Contractors responsibility to find the adequate supply and quality of the water used in the Slurry Seal work.

PART 3 - EXECUTION

3.1 GENERAL

A. Traffic control should be in place before work begins or equipment enters onto the work zone. Traffic control measures shall be in conformance with

Caltrans “Code of Safe Operating Practices”.

B. All materials shall come from Caltrans approved sources and products listing. Slurry Seal materials and work shall conform with Caltrans

“Standard Specifications” Section 37‐3 “Slurry Seals”.

C. Asphalt emulsion used in the Slurry Seal shall be “Polymer Modified

Cationic Quick Setting” (PMCQS 1H) and in conformance with Section 94 of the Caltrans “Standard Specifications”.

D. The Slurry Seal work will be conducted using a “Type I” aggregate grading size conformance with Section 37‐3 “Aggregate Gradation Acceptance

Criteria” of the Caltrans “Standard Specifications”.

E. Equipment used for Slurry Seal work shall be in conformance with Section

37 of the Caltrans “Standard Specifications”.

3.2 QUALITY CONTROL AND TESTING

A. Slurry Seal “Job Mix Design” shall be performed by a Third‐Party laboratory and submitted to the Project Manager. The Third‐Party laboratory shall follow the ISSA - Mix Design Test Method procedure. The cost of the Third‐

Party laboratory work is at the Contractor’s expense.

B. There will be NO Slurry Seal work done during or immediately following any measurable rain event.

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C. Material or work determined by the Project Manager or COR not to be in accordance with the Caltrans “Standard Specifications” or the NCA

Technical Specification Section for “Slurry Seal” shall be replaced at

Contractor’s own expense.

D. To account for aggregate bulking, it is the responsibility of the

Contractor to check stockpile moisture content and to set the machine accordingly.

E. Slurry Seal acceptance will be based on Section 37-3.01A(4)(c) “Department

Acceptance” of the Caltrans “Standard Specifications”.

3.3 SURFACE PREPARATION & CRACK SEAL TREATMENT

A. Contractor shall examine all pavement surfaces prior to performing work and notify the COR of any adverse or unacceptable conditions that would affect the successful application of materials. Do not commence work until unacceptable conditions are corrected.

B. Prior to any Slurry Seal work, the Contractor shall conduct proper surface preparation to ensure that pavements structural integrity by Crack Sealing and Patching if needed.

C. All cracks in the existing pavement from 1/4 to 1 inch wide, shall be receive “hot pressure fed” crack repair by the Contractor in accordance with Section 37-6 of the Caltrans “Standard Specifications”.

D. Crack Seal material shall be “flush fill method” where material is forced into an existing uncut “non-working crack”. Once filled, the crack is struck off flush with the pavement. When using thermoplastic materials, the crack should be filled to slightly below the surface to allow for expansion when hot.

E. The reservoir method should be used for all “working cracks”. In the reservoir method, the crack is cut or routed to form a reservoir that is filled with the Crack Seal material.

F. When routing or sawing is incorporated, cracks need to be cleaned and dried prior to application of the filler or sealant. Hot air blasting using a hot compressed air heat lance will be required for this Project.

G. “Over-band” and “Band-Aid” Crack Seal treatment finishes is not acceptable with Slurry Seal coat treatment proposed in this Project.

H. If cracks in the existing pavement are greater than 1 inch wide, the

Contractor shall repair per the Caltrans “Standard Specifications”. Such work if approved by the Project Manager may require a Change Order.

I. Hot applied Crack sealants require a specific cure time prior to being covered with a seal. This Project will require a thirty (30) day period

32 12 36 - 13 between the Crack Seal Treatment and the Slurry Seal Coat Treatment. A shorter cure time for the Crack Seal Treatment will be considered by the

Project Manager if the Contractor can provide supporting documentation that the Crack Seal material and the Slurry Seal emulsion is compatible for the proposed cure time.

J. The Contractor shall remove all thermoplastic pavement markings and sweep the entire roadway surface. All paved surfaces must be clean and free from all loose material, debris, and dirt.

K. All existing stray and overwide rubber crack sealant material on the paved surface shall be removed by the Contractor from the pavement. Such preparation work shall be inspected by the COR prior to proceeding with the Slurry Seal coat treatment.

L. Contractor shall ensure that all manholes, valve boxes, catch basin grates or other structures located in the pavement are covered with heavy paper or roofing felt. Such material shall be removed once the slurry seal material has sufficiently cured.

M. The Contractor shall apply sand or detackifying agent to the crack treatment if determined by the COR to be “tacky”, before opening the pavement to any traffic.

3.4 PLACEMENT OF SLURRY SEAL

A. If water was used during the surface preparation, cracks shall dry thoroughly before placement of the Slurry Seal coat material.

B. Tack coat the pavement with the Slurry Seal Emulsion is required on all dry and raveled surfaces prior to Slurry Seal coat.

C. The Tack Coat distributor shall apply the emulsion evenly at a rate of at

0.10 gal/yd2. The tack coat shall be allowed to cure sufficiently before the application of Slurry Seal coat.

D. Slurry Seal preparation and placement shall be in conformance with section

37-3.01C “Construction” of the Caltrans “Standard Specifications”.

E. Spread the Slurry Seals uniformly and do not spot, re-handle, or shift the mixture. In areas inaccessible to spreading equipment, spread the

Slurry Seal mixture with hand tools or other authorized methods. Hand squeegees and brushes shall be acceptable in areas where practicality prohibits the use of mechanized equipment.

F. Ensure that an enough Slurry Seal coat material is carried in all parts of the Spreader Box at all times so that complete coverage of the treated surface can be achieved.

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G. Significant streaks, such as those caused by oversized aggregate or broken mix, shall not be left in the finished surface. If excessive streaking occurs, the job will be stopped by the COR until the cause of the problem has been corrected.

H. The suggested Slurry Seal (TYPE I) application is 10 - 12 lbs./yd2. The suggested application rates are based upon the weight of dry aggregate in the mixture. Application rates are affected by the unit weight and gradation of the aggregate and the demand of the surface to which the

Slurry Seal is being applied. Application rates by the Contractor above the suggested application rate are incidental to the Contract Award price.

I. No excess buildup, uncovered areas, or unsightly appearance shall be permitted on longitudinal or transverse joints.

J. The Contractor shall provide suitable equipment to produce a minimum number of longitudinal joints throughout the project. Longitudinal joints shall not be placed in a wheel path.

K. If less than full Spreader Box width passes are used, they shall not be the last pass of any paved area.

L. Areas which cannot be accessed by the mixing machine shall be surfaced using hand squeegees to provide complete and uniform coverage. If necessary, the area to be hand worked shall be lightly dampened prior to mix placement. Handwork shall exhibit the same finish as that applied by the Spreader Box and shall be completed prior to final surfacing.

M. Care shall be taken to apply straight lines along curbs, shoulders, and intersections. No run-off on these areas will be permitted. Roofing felt paper or heavy plastic may be used to begin or end a pull cleanly.

N. Parking areas should be rolled by a self-propelled, 10-ton (maximum) pneumatic tire roller equipped with a water spray system. All tires should be inflated per manufacturer’s specifications. Rolling shall not start until the Slurry Seal has cured sufficiently to avoid damage by the roller. Areas which require rolling shall receive a minimum of three (3) full coverage passes.

O. When corrections to the Slurry Seal work is required, the COR shall approve the Contractor’s method of correction.

P. Maintain the new Slurry Seal coat surface in an acceptable condition until final acceptance of the work has been approved by the COR.

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3.5 RESTORATION

A. The Contractor shall protect and preserve all public and private property, including all existing vegetation, existing landscape features, and monuments within, along, and adjacent to the Limits of the Work.

B. All areas disturbed by the Contractor shall be restored to a pleasing and acceptable condition, particularly those areas within sight of the finished roadway or other paved areas. All such areas shall present a pleasing appearance to travelers on the Cemetery grounds.

C. All utility access areas, gutters and intersections, shall have the slurry seal completely removed prior to acceptance by the COR.

D. The restoration of all disturbed areas shall be accomplished prior to

Contract Final Acceptance.

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