GRCA_PP001.pdf

E-46 REVISED 04/26/2010

AZ IMR-GRCA-PRES-1(10)

GRAND CANYON NATIONAL PARK

SOUTH RIM PAVEMENT PRESERVATION

NPS PMIS NO. 155087

(d) Aggregate samples. 80-pound sample of each aggregate.

(e) Emulsified asphalt sample. Two 1-quart samples and a production certification according to

Subsection 106.03(a) of emulsified asphalt from the same source and of the type to be used on the project.

(f) Mineral filler samples. 20-pound sample of each proposed mineral filler.

(g) Qualifications. Demonstrate satisfactory completion of at least 5 comparable projects. Provide

Superintendent or Foreman experience in micro-surfacing on at least 5 comparable projects.

The job-mix formula will be evaluated for approval.

410.04 Equipment. Furnish with the following capabilities.

(a) Mixing equipment:

Capable according to ISSA A143. A standard MicroSeal box may be substituted for parking areas and other small work areas, as approved by the CO.

(b)Mechanical-type single squeegee spreader box.

(1) Attaches to the slurry seal mixer;

(2) Flexible squeegee in contact with the surface to prevent loss of slurry;

(3) Adjustable to ensure a uniform spread over varying grades and crowns;

(4) Adjustable in width with a flexible strike-off; and

(5) Augers for uniform flow to edges.

(6) Rut filling box according to ISSA A 143 when required.

(c) Auxiliary equipment. Furnish hand squeegees, shovels, and other equipment necessary to perform the work. Provide cleaning equipment including, but not limited to, power brooms, air compressors, water flushing equipment, and hand brooms for surface preparation.

410.05 Surface Preparation. Clean the existing surface of all loose material, dirt, or other deleterious substances by approved methods. Protect all service entrances such as manholes, valve boxes and drop inlets from the micro-surfacing by a method suitable to the CO. Protect all concrete work, rock walls and other objects from the micro-surfacing with a method suitable to the CO.

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CENTRAL FEDERAL LANDS HIGHWAY DIVISION

12300 WEST DAKOTA AVENU, SUITE 360

LAKEWOOD, COLORADO 80228

ATTENTION: LORI KLIETHERMES

1:

Remove and Replace Special Contract Requirements, Page E-46 bearing revision date 04/26/2010. Subsection 410.04 Equipment revised.

Refer to the Q&A section of CFLHD's website (http://www.cflhd.gov/contracting/construction/advertisedprojects.cfm) under the project name for further information.

*FAILURE TO ACKNOWLEDGE THIS AMENDMENT IN BLOCK 19 OF THE SF 1442 BY THE DESIGNATED DATE AND HOUR SPECIFIED IN THE SOLICITATION MAY RESULT IN REJECTION OF YOUR BID (REFER TO SF-1442, PAGE A-2, OF THE SOLICITATION)