SOW-_IMB_ROAD_MAINTENANCE.doc

Scope of Work 4/8/2013

1.0 CONTRACT PROJECT:

1.1 Project Number:

1.2 Project Title: IMB Road Maintenance

2.0 PROJECT CONTACT PERSONS:

2.1 On-Site Project Contact (PC)

Kendall Fancher

NOAA/NOS/National Geodetic Survey

15351 Office Drive

Woodford, VA 22580

Phone: (540) 373-1243

Email: kendall.fancher@noaa.gov

2.2 CONTRACTING OFFICER’S REPRESENTATIVE (COR)

Zelda LeCoat NOAA/NOS/National Geodetic Survey

Phone: 301-713-3184 x 135 Email: zelda.lecoat@noaa.gov

3.0 SCOPE OF SERVICES:

The Contractor shall provide all professional services necessary for the accomplishment of the contract project and such required services shall be in accordance with the requirements as described herein and in attached contract documents. The project entails surface preparation, chip sealing, slurry sealing, and paint striping/marking for roads and parking surfaces located at the National Geodetic Survey’s Training Center & Laboratory facility located at 15351 Office Drive, Woodford, VA 22580. There is approximately 53000 square feet of road surface requiring repair and double chip and seal application associated with Observatory road and 29000 combined square feet of road and parking surface area requiring slurry seal application associated with Office Drive and associated parking areas. The associated tasks include:

Task #1 – Repair open areas and potholes in Observatory Road prior to chip sealing. See figure 1. for an aerial view of Observatory Road. The portion of Observatory Road to be repaired and resurfaced begins with its intersection with Caroline County Road 610 (Pepmeir Hill Road) to the west and the point to the east where the road switches from hard surface to gravel. The estimated total length of road to be repaired and resurfaced is 2650 feet. This road surface averages 20-feet wide.

Task #2 – Repair and seal cracks in Observatory Road, Office Drive, Parking Area A, Parking Area B and Parking Area prior to chip and seal or slurry coating these surfaces. Office Drive forms a half circle with both its western and eastern ends intersecting with Observatory Road. Office Drive is approximately 900 feet. long. The approximate width of Office Drive is 18-feet. The approximate combined area of Parking Areas A, B and C is 12,750 square feet. See Figure 1. for an aerial view of Office Drive and Figure 2. for an aerial view of Parking Areas A, B and C.

Task #3 – Remove all vegetation and clean all surfaces of dirt and debris before installation of chip and seal and slurry coating.

Task #4 - Apply chip seal to Observatory Road, including mechanized sweeping prior to the chip sealing portion of the project.

Task #5 – Apply a second chip and seal to Observatory Road, including mechanized sweeping upon completion of the chip sealing portion of the project.

Task #6 - Apply slurry seal to Office Drive and parking areas A, B and C. See Figure 2 for an aerial view of Office Drive and parking areas A, B and C.

Task #7 – Re-stripe and re-mark all paint stripes and markings covered during the slurry seal applications to parking areas A and B. See figure 3. for an image depicting the current configuration of parking stripes and markings.

ALL CHIP AND SEAL AND SLURRY SEAL WORK SHALL BE DONE WHEN THE ROAD IS DRY AND HAS A SURFACE TEMPERATURE OF FIFTY (50) DEGREES FAHRENHEIT AND RISING - NO COOLER.

3.1 Task #1: The Contractor shall repair all open areas, potholes and cracks, including turnkey supply of all aggregates, mineral filler, hydrated lime, bituminous material, additives, and additional base rock as may be necessary, etc.

3.1.1 Open areas of pavement and potholes sections shall be removed to a sufficient depth to accommodate a full depth replacement section of asphalt, and to allow for the remaining and/or revised base to be compacted. These sections to be removed will be cut away where they meet with stable pavement areas in order to provide vertical faces.

3.1.2 Contractor shall ensure that the subgrade and/or base have been properly graded and compacted, and further ensure the cross-slope, elevation, and alignment for conformance.

Contractor shall check for soft spots and ruts, and correct all deficiencies. Any damage to the subgrade or base must be repaired before placement of the new asphalt.

3.1.3 Patch pavement shall include sufficient slope/drainage in this area to mitigate standing water. A minimum of 3 inches of asphalt shall be applied:

3.1.7 Asphalt shall not be placed on any wet surface, when the temperature is below 50 degrees

F, or when weather conditions otherwise prevent the proper handling or finishing of the patch.

3.2 Task #2: Contractor shall repair and seal cracks in Observatory Road, Office Drive, and Parking Areas A, B and C. Cracks shall be prepared before application of chip and seal or slurry seal.

3.2.1 Hairline cracks (less than 1/4 inch) require no preparation

3.2.2 Small cracks (1/4 to 3/4 inch) shall be widened to a nominal width of 1/8 inch greater than the existing nominal or average width. The depth of the routed crack shall be approximately 3/4 inch. A backer rod material shall be placed in cracks that have a depth greater than 3/4 inch.

3.2.3 Backer rod shall be compressible, non-shrinking, non-absorptive material with melting point higher than the pouring temperature of the sealant.

3.3.3 Medium cracks (3/4 to 2 inches). Cracks that are 3/4 to 2 inches shall be prepared by cleaning the crack using a sandblaster, HCA heat lance, or wire brushes, and then cleaning with compressed air.

3.3.4 Large cracks (greater than 2 inches) shall be prepared in the same manner as potholes, where a saw shall be used to cut away damaged pavement to provide vertical faces. The area shall then be cleaned and filled instead of sealed.

3.4 Task#3: Contractor shall remove all vegetation, dirt, and any loose debris from Observatory Road, Office Drive and Parking Areas A, B and C prior to installation of chip and seal or slurry seal.

3.4.1 Scrape all oil spots to remove excess oil and dirt.

3.4.2 Burn out/clean/clear all vegetation and foreign material.

3.4.3 Sweep (mechanized) all areas to receive chip seal and slurry seal.

3.5 Task #4: Contractor shall chip seal Observatory Road.

3.5.1 Apply spray down oil in a uniform manner on entire chip sealing area.

3.5.1.1 Asphalt binder shall be CRS-2R

3.5.1.2 Rate of spray shall be .40 gallons per square yard, or greater

3.5.2 Apply rock chips over entire chip sealing area within 5 minutes of application of spray down oil.

3.5.2.1 Rock chips are to be one sized, cubical, clean, angular, and resistant to abrasion.

3.5.2.2 Chip coverage shall be twenty-six (26) pounds per square yard, or better.

3.5.3 Entire chip sealing area is to be rolled a minimum of four (4) times within thirty (30) minutes of application, with a minimum 4 ½ ton rubber tire roller.

3.5.4 Lightly broom the road surface to remove loose stones after aggregate application and once the emulsion has set.

3.6 Task #5: Contractor shall apply a second chip seal to Observatory Road.

3.6.1 Apply spray down oil in a uniform manner on entire chip sealing area.

3.6.1.1 Asphalt binder shall be CRS-2R

3.6.1.2 Rate of spray shall be .40 gallons per square yard, or greater

3.6.2 Apply rock chips over entire chip sealing area within 5 minutes of application of spray down oil.

3.6.2.1 Rock chips are to be of a smaller size than those applied during task #3.5, otherwise they are to be one sized, cubical, clean, angular, and resistant to abrasion.

3.6.2.2 Chip coverage shall be twenty-six (26) pounds per square yard, or better.

3.6.3 Entire chip sealing area is to be rolled a minimum of four (4) times within thirty (30) minutes of application, with a minimum 4 ½ ton rubber tire roller.

3.6.4 Lightly broom the road surface to remove loose stones after aggregate application and once the emulsion has set.

3.6.5 Apply a top coat (fog seal) to entire chip sealing area, after sweeping is completed. Fog sealer shall be applied by standard bituminous distributors and/or hand sprayed using standard tack pots.

3.6.5.1 Application rate shall be a minimum of 0.15 gallons per square yard

3.6.6 Sweeping (mechanized) of excess gravel to occur between 2 and 4 days after final rolling of chip sealing area.

3.7 Task #6: Contractor shall apply a slurry seal to Office Drive and Parking Areas A, B and C. The slurry seal shall consist of a mixture of emulsified asphalt, mineral aggregate, water, and any additives, proportioned, mixed and uniformly spread over a properly prepared surface. The completed slurry seal shall leave a homogeneous mat, adhere firmly to the prepared surface, and have a friction-resistant surface texture throughout its service life.

3.7.1.1 Asphalt emulsion shall be a cationic quick-setting type.

3.7.1.2 Water shall be potable, free of harmful salts and shall be of such quality that the asphalt will not separate from the emulsion before the slurry seal is in place in the work.

3.7.1.3 Aggregate will consist of Type I sound, durable, crushed stone or crushed gravel and approved mineral filler. The material shall be free from vegetable matter and other deleterious substances. Aggregates shall be 100% crushed with no rounded particles.

3.7.2 Necessary precautions will be taken to avoid getting slurry seal on buildings adjacent to the slurry seal surfaces.

3.8 Task #7: Contractor will paint stripes and markings in Parking Areas A and B. using a high quality, retro-reflective, fast drying, oil based, commercial pavement marking paint.

3.8.1 Parking lot stripes are to be laid out to match the existing parking lot stripes.

3.8.1.1 Re-stripe the 14 existing parking spaces as shown in Figure 3.

3.8.1.2 Standard white in color

3.8.1.3 Lines will be 4 inch minimum

3.81.4 Width of each parking space will be 9 ft.

3.8.2 Re-mark the existing Access Aisle in the area shown in Figure 3 using the existing striping configuration.

3.8.3 Re-mark the existing Handicap Accessible Parking space in the area shown on Figure 3.

3.8.3.1 Striping in the handicap spaces shall be white

3.8.3.2 Pavement Stencils in the Handicap area shall be white.

4.0 PROJECT REQUIREMENTS:

The Contractor shall be responsible for verifying site conditions, making quantity take offs, obtaining accurate measurement of existing conditions, and performing any act or operation which may be necessary to properly bid the work and complete the same as depicted and specified. Failure to verify the existing site conditions shall not relieve the Contractor of the responsibility to complete the work as required.

4.1 All existing lines in the parking areas shall be re-painted following pavement work.

4.2 After final rolling, no vehicular traffic of any kind shall be permitted on the pavement until it has cooled and hardened. Contractor shall provide necessary marking to deter traffic until such time as it is ready for vehicular traffic.

4.3 In addition the Contractor shall:

4.3.1 Supply all drawings and permits needed for this project.

4.3.2 Coordinate the site investigations and site work with the COR and RPR. Construction shall be managed to provide minimal impact to the campus operation.

4.3.3 Patch all holes resulting from demolition or new construction.

5.0 GENERAL REQUIREMENTS:

5.1 Permits: Where governing regulations and imposed codes and standards require notices, permits, licenses, inspections, tests, and similar items or actions in order to lawfully proceed with the required work, Contractor shall obtain items and take those actions in accordance with the regulations of the governing authority. The costs of such permits, licenses, inspections, etc., are the obligation of the Contractor.

5.2 Installation: It shall be the responsibility of the Contractor to complete work in accordance with the manufacturer’s recommendations and Industry Standards. Additional procedures and materials may be required than is indicated herein. If any item specified herein conflicts with applicable codes and recommendations, the Contractor shall bring it to the attention of the Contracting Officer for immediate resolution.

5.3 Submittals: Sufficient detail to review the proposal will be required at the time of offer. However, manufacturer's descriptive literature/shop drawings for all materials shall be submitted to the CO and EPM for review after contract award. The descriptive literature/catalogue cuts shall be annotated/highlighted with sufficient clarity so as to identify each specific product proposed for this project and show its conformance with contract requirements. Submittals are required for all building materials including: Shop drawings/product data/ samples, highlighting specific part numbers proposed, along with all selected options.

5.4 Quality Control: The work performed under this contract shall be subject to continuous audit by the COR. Quality control is the exclusive responsibility of the Contractor.

5.5 Protection of Work and Property/Safety Requirements:

(a) The Contractor shall protect the work, the site, and all existing property and structures within the limit of construction activities or that may be affected thereby until acceptance of the work. Any damage to property shall be repaired at the Contractor’s expense, to pre-damaged condition to the satisfaction of the COR.

(b) Safety and health matters, as they relate to the work, are the exclusive responsibility of the

Contractor. The Contractor shall furnish, erect, and maintain barricades, warning lights, signs, guards, or take other precautions as may be required by law or local authorities for protection and security.

5.6 Temporary Facilities:

(a) Temporary utilities (water and electricity) may be furnished to the Contractor by the

Government, if available and, if requested. Contractor shall maintain and protect all such utilities during the course of construction and shall repair or replace any items damaged through his own negligence.

(b) Should the Contractor require any power or utility shutdown during construction, he shall receive approval for such shutdown from the OSPC three working days prior to this need.

(c) Access to restrooms located at the facility may be furnished to the Contractor by the Government, if available and if requested.

6.0 Materials and Equipment:

(a) The material and equipment to be furnished under these contract documents shall be the standard products of manufacturers regularly engaged in the production of such materials and equipment and shall be the manufacturer's latest standard design.

(b) All materials and equipment to be incorporated in the work shall be handled and stored by the manufacturer, fabricator, supplier and Contractor before, during and after shipment in a manner to prevent warping, twisting, breaking, chipping, rusting and any injury, theft or damage of any kind whatsoever to the materials and equipment. All materials and equipment furnished by Contractor shall be subject to inspection and approval by the CO/COR.

7.0 Cleanup: The construction site shall be kept clean and free of debris at all times. Upon completion of project, and prior to final inspection, the Contractor shall remove from the premises all unused material, trash, and debris resulting from the work to the satisfaction of the CO/COR.

8.0 Warranty: Submit data concerning the standard one year warranty for workmanship, including the warranty period (dates), and warranty contacts with names, addresses and telephone numbers.

(a) Extended Equipment/Product Warranties: Obtain and furnish to the Contracting Officer all written warranties for equipment/products that have extended warranties (warranty periods exceeding the standard one-year warranty) furnished under the contract. The warranty period shall begin on the same date as project acceptance and shall continue for the full/product warranty period. The warranties shall be fully executed and delivered to the

Contracting Officer prior to final acceptance of the facility.

9.0 Final Payment/Contract Closeout: The following submittals are REQUIRED PRIOR TO FINAL

PAYMENT.(1) General and Subcontractors one (1) year warranty on work.

10.0 PROJECT SCHEDULE: The project is not to commence before 06/01/2013 and must be completed by 07/01/2013.

Figure 1. Roads at the NGS Training Center & Laboratory Facility. Observatory Road represented by red poly-line. Office Drive represented by light blue poly-line.

Figure 2. Parking Areas A, B and C represented by yellow polygons.

Figure 3. Existing parking space striping and markings.

A

B

C

Handicap Accessible Parking

Access Aisle