Statement_of_Work_15-1071_600_Ramp_Shoulders.pdf

STATEMENT OF WORK

FOR

XDAT 15-1071 REPAIR SHOULDERS SPOTS 604-607

6 April 2016

1. SCOPE

1.1 Demolish existing 2” of asphalt and remove 6” existing base course plus over excavate an additional 6” soil per areas shown in Drawing 1. Quantities of drawing 1 determined using GeoBase and accurate within +/- 100 SF. Compact existing soil, place 12” of Class 2 base course, and place two each 2” asphalt lifts (CALTRANS Hot-Mix Asphalt ) per pavement section detail shown in Drawing 2. Work to include geotextile fabric, prime coat, prime coat, tack coat, and layout and application of pavement markings.

1.2 The contractor (ktr) shall provide all labor, materials, and supervision to meet scope requirements as stated in para 1.1 above. All work shall comply with the specifications identified in Para 2.5 and references defined in Section 3. Ktr shall verify field conditions, dimensions, and material quantities prior to start of the project. All work must comply with environmental laws and regulations as stated in Section 2.4.

2 REQUIREMENTS

2.2 General Requirements

2.2.1 Ktr shall notify Government in writing 24 hours prior to all density tests performed by ktr’s quality control personnel or ktr’s independent testing firm. Government will accept nuclear testing method in lieu of other destructive testing methods. Government shall witness density tests of each 2” asphalt lift sublot. Ktr shall submit all compaction reports or field notes within 24 hours after density tests performed. Official test reports shall be submitted no longer than 30 days after density tests performed.

2.2.2 Dispose of asphalt millings at a location off of Travis AFB and provide Construction & Debris report within 30 days of disposal for 60 CES/CEI tracking of recycled materials.

2.2.3 Contractor shall provide on-site vacuum sweeper during all construction operations to eliminate all FOD hazards. Area must be swept and clean of debris before government acceptance.

2.2.4 Ktr to obtain flight line driver’s license. Ktr will be escorted during all construction activities (free zone will not be established). Airfield driving training to be scheduled at least 1 week prior to start of work.

2.2.5 Period of Performance is 90 days. Actual construction and closure of airfield taxiways and parking spots limited to 30 calendar days. Ktr required to start demolition work within patch area #4 first. Contractor to complete patch area #4 excavation, backfill, compaction, paving, and striping within 4 days

2.2.6 Ktr will provide low profile barricades to secure the area. All barricades and equipment must be lighted during reduced visibility and hours of darkness and flagged IAW UFC 3- 260-01.

2.2.7 Ktr will perform pre-survey of all pavement markings within the pavement area per Drawing 1. Ktr to submit scaled striping plan for government approval prior to layout of markings. Ktr to meet ETL 04-2 standards for striping plan. Note: Shoulders require wing tip lines, red lines, and deception markings.

2.2.8 There are key professionals with substantial experience that are critical to pavement performance for the government. Key personnel with proven capabilities to execute and deliver on a timely basis the project deliverables. Key personnel, as defined for this contract, are the Project Manager, Project Superintendent, and Contractor Quality Control System Manager.

2.2.8.1 Project Manager: The proposed On-Site Construction Project Manager must possess a Bachelor’s Degree in Engineering or Construction Management, with a minimum of 3 years’ experience (within the last 10 years) performing as a Construction Project Manager on construction projects similar in monetary size and/or scope to this project. A minimum of 1 of those 3 years must indicate experience as a Construction Project Manager on military and/or commercial airfield construction projects.

2.2.8.2 Project Superintendent: The proposed On-Site Project Superintendent must have a minimum of 3 years construction related experience (within the last 10 years) performing as a Project Superintendent on construction projects similar in monetary size and/or scope to this project. A minimum of 1 of those 3 years must indicate experience as a Project Superintendent on military and/or commercial airfield construction projects.

2.2.8.3 Contractor Quality Control (CQC) System Manager: The proposed On-Site Contractor Quality Control System (CQC) Manager shall have a minimum 2 years’ experience (within the last 10 years) as a Construction CQC for Military and/or commercial airfield pavement construction on projects similar in monetary size and/or scope to this project.

The CQC System Manager shall be an employee of the Prime Contractor and shall have completed or be scheduled to complete the “Construction Quality Management For Contractors” course identified in Section 01 45 00.00 10, Quality Control, of the specifications prior to the start of construction.

2.3 Special Requirements

2.3.1 Ktr shall cold-mill 2” of existing asphalt for locations shown in Drawing 1 and recycle off-base. Asphalt thickness determined from cores taken, one at each of the four patch locations. Actual thickness across the entire area may very slightly.

2.3.2 Ktr shall remove existing 6” of base course and dispose of off-base.

2.3.3 Ktr shall over excavate an additional 6” of in situ soil and dispose of off-base.

2.3.4 Compact existing subgrade to specifications and place geotextile fabric.

2.3.5 Compact new 12” of base course in 2 each 6” lifts, meeting specification compaction requirements Gradation #2 per 23 11 23 AGGREGATE BASE COURSE.

2.3.6 Place prime coat before first asphalt lift.

2.3.7 Provide 2 each 2” lifts of HMA, equivalent CALTRANS HMA mix asphalt, with tack coat between lifts and on all vertical cut faces.

2.3.8 Pave to drain (min 1% slope, max 3% slope) matching pavement grade to existing utility covers (no raising or lowering). Note: several utility covers are above natural grade and will have to be feathered into overall drainage grade of asphalt. Covers will not be lowered. Field verification of these covers to be accomplished at site visit. Contractor to conduct boundary, topography survey before demolition to establish grading plan.

2.3.9 Apply crack sealant, Type I per Spec 32 01 17.16, on surface of new asphalt-existing asphalt and new asphalt-existing concrete, minimum 2” wide.

2.3.10 Restripe pavement markings per original layout IAW ETL 04-2 with waterborne paint, Type I Beads, per Spec 32 17 23 –PAVEMENT MARKINGS.

2.4 Environmental Mitigation

2.4.1 Before work begins, the contractor will clearly delineate the project disturbance boundaries which shall be entirely on paved or gravel surfaces. The Contractor shall ensure all equipment, materials and vehicle traffic stay on paved surfaces and are confined within the designated project disturbance boundary (including access roads and laydown).

2.4.2 Prior to the start of construction activities, a Service approved Biologist, provided by the government, shall provide general education and awareness training sessions for all individuals that will be involved with site preparation or construction. A more in-depth training will be provided to at least 2 contractor personnel designated as “biological monitors”. A biological monitor shall be personnel assigned through duration of project and involved in all construction activities (PM, Super, QA). Upon completion of training, employees will sign a form stating that they attended the training and understand all the conservation and protection measures.

2.4.3 No work during rain events. The appointed biological monitor shall conduct an initial inspection prior to groundbreaking and after each rain event, prior to any work commencing within the project site boundary.

2.4.4 Construction activities will be timed to occur during the dry season (June 1 - October 15) to minimize potential effects to California tiger salamander dispersal. Dry season dates may be adjusted ±30 days based on re-evaluation by TAFB Environmental office and the USFWS. Re-evaluation will be based on present year rain data and the latest scientific data.

2.4.5 Any open trench/excavation greater than 6” shall be covered or escape ramps provided at the end of each workday.

2.4.6 Construction activities will occur between sunrise and sunset.

2.4.7 If California Tiger Salamanders (CTS) are observed on or near the construction site, stop all work and contact the Contracting Officer and 60 CES/CEIE Natural Resources Program Manager 707-424-8354 or 707-464-5126 immediately.

2.4.8 To protect birds under the Migratory Bird Treaty Act, the Government will provide for the project (if occurring between the months of February-August) a biologist to perform a pre-construction site survey at least 14 calendar days before construction to determine whether any protected species or nesting birds are present that may be impacted by project activities. If nesting birds are present on or near the site, construction may be temporarily postponed until the nesting season is over.

2.4.9 The contractor will confine all equipment to designated work zones (including access roads and laydown) within the area to be disturbed.

2.4.10 The Contractor will utilize dust control measures whenever necessary. These measures include, but are not limited to, use of a water truck to spray disturbed areas during construction activities and covering of soil piles with plastic whenever they are not in use. No water will be allowed to run-off the site. If connecting to a hydrant, a backflow preventer is required.

2.4.11 All trash (food related items such as wrappers, bottles, cans, food scraps, etc.) will be placed in closed containers and removed from the project site on a daily basis. All fencing, flagging, debris, trash, and materials will be removed from work areas following completion of construction and habitat restoration activities.\

2.4.12 Operators will be familiar with and exercise spill prevention and emergency spill response measures as required. Emergency response plans will be on site.

2.5 Specifications

1000 – GENERAL REQUIREMENTS (03/16)

01 56 00 – ENVIRONMENTAL GENERAL REQUIREMENTS (03/14)

01 14 00 – WORK RESTRICTIONS (11/11)

01 33 00 – SUBMITTAL PROCEDURES (5/11)

01 35 26 – GOVERNMENTAL SAFETY REQUIREMENTS (11/15)

01 45 00.00 40 – QUALITY CONTROL (11/14)

31 00 00 – EARTHWORK (8/8)

31 05 19 – GEOTEXTILE (8/8)

31 23 00.00 20 – EXCAVATION AND FILL (2/11)

32 01 16.17 – COLD MILLING BITUMINOUS PAVEMENTS (8/8)

32 01 17.16 – SEALING OF CRACKS IN BITUMINOUS PAVEMENTS (8/8)

32 11 16 – SUBBASE COURSES (08/8)

32 11 23 – AGGREGATE BASE COURSE (08/08)

32 12 10 – BITUMINOUS TACK & PRIME COATS (08/8)

32 12 15.13 HMA FOR AIRFIELDS (11/15)

32 17 23 –PAVEMENT MARKINGS (8/16)

3 REFERENCES

All work performed on this project shall comply with the specifications and regulations listed below.

CALTRANS Standard Plans 2015 CALTRANS Standard Specifications 2015 Unified Facility Guide Specifications (UFGS) (provided in Section 2.5) UFC (Unified Facilities Criteria) Engineering Technical Letter (ETL) 04-2 Standard Airfield Pavement Marking Schemes.

4 ATTACHMENTS

Drawing 1- Site Map

Drawing 2- Pavement Section Detail

Drawing 3 - Haul Route/Laydown Area

Drawing 4 - As-built //End of S.O.W. //

1.2 The contractor (ktr) shall provide all labor, materials, and supervision to meet scope requirements as stated in para 1.1 above. All work shall comply with the specifications identified in Para 2.5 and references defined in Section 3. Ktr shall...