Draft PWS.doc

Civil IDIQ8

BAEY 114444

114444

SECTION 00005

TABLE OF CONTENTS

SCHEDULE OF DRAWINGS

SECTION 01000

GENERAL REQUIREMENTS

1. SCOPE. The contractor shall furnish all labor, supervision, materials, tools, equipment, and incidentals and do all the work involved as necessary for a complete working system at Beale AFB, CA, as specified herein. All work shall be accomplished complete in place in accordance with (IAW) the contract specifications, drawings, and as directed by the Contracting Officer (CO).

1.2 The primary items of work are listed in the Bid Schedule.

2. WORKING HOURS. Working hours for the contractor will normally be between the hours of 7:00 a.m. and 5:00 p.m. during the week (Monday - Friday). If the contractor desires to work during periods other than these, he/she must obtain approval from the CO three days in advance to allow assignment of additional inspection forces if they are reasonably available. Work on the airfield must be done “After Hours” which is considered to be from 8:00pm until 6:00am the following day, on weekends, and when the airfield is closed (such as “down days”). Road closures and airfield work requires minimum two weeks advance scheduling and coordination with base personnel.

3. MAINTAINING BUSINESS AS USUAL.

3.1 The contractor must coordinate all phases of the project with the inspector and the CO at the beginning of each week (Monday morning), and indicate on a copy of the plans which locations and types of work he/she will be engaged with that week. The inspector in turn will coordinate project operations with other agencies such as the fire dept, security police, airfield operations, commanders, and so forth. The contractor shall notify the inspector prior to changing locations if different from that given each Monday.

3.2 Affecting Traffic.

3.2.1 Work must be arranged so that contractor interference with traffic and people is minimized.

3.2.2 Traffic Plan. For each task order that may affect traffic (delays, detours, interruptions), the contractor shall furnish a basic traffic plan indicating signage, detours, barricades and so forth. This traffic plan must be submitted a minimum of 15 calendar days in advance of affecting any traffic. The traffic plan can be something as simple as a red-lined print of the area indicating signs and barricades IAW CalTrans standard traffic control recommendations. The contractor shall provide and maintain all necessary detour signs, barricades, cones and flag persons for rerouting traffic as directed by the CO and coordinated with the inspector who must notify base personnel 2 weeks in advance.

3.2.3 Prior to reopening a road or lot to traffic, the contractor shall request an inspection and approval from the CO in order to assure that it is safe. On roads, temporary reflective floppies will be required since lane striping cannot be done until 7 days after paving.

3.3 The contractor shall be required to provide notice to the affected building occupants 7 days in advance of any utility outages or when work will be done in the vicinity of their building.

3.4 Work shall not commence in any area until all equipment, personnel, materials, tools, and supplies are on hand, and the contractor is prepared to accomplish the specified work in an efficient, professional manner as determined by the CO.

4. SPECIAL CONSIDERATIONS.

4.1 Clean Up. The contractor shall remove all equipment, rubble and rubbish from streets and parking lots open to traffic at the end of each workday. At the end of each project/T.O. all equipment, rubble and rubbish shall be completely removed from the base by the contractor, leaving the area in a safe, clean and orderly manner to the satisfaction of the CO.

4.2 If there are any uncertainties with respect to elevations, location of new or existing utilities, or any other information in this contract, the contractor shall obtain clarification from the CO or his designated representative. See “Digging Permit”, paragraph 15 of this section.

4.3 The contractor shall coordinate the exact location of each item of work with the inspector, such as drainage systems, drop inlets, repairs, and so forth. Once a week, the contractor shall layout and stake the proposed work in the field, and then review the layout with the inspector and a representative from 9 CES/CEVA, who shall make recommendations as to adjustments needed. Prior to doing any work, the contractor shall receive approval from the inspector, who will coordinate with the CO, engineer, and environmental flight as required.

4.4 The contractor shall remove and replace miscellaneous movable items such as refuse bins, garden ornaments, and signs as required to perform work to the satisfaction of the CO.

4.5 Hauling. Hauling across the four bridges on Gavin Mandery with large dump trucks (2 tons or greater) is prohibited. The haul route from housing (MFH) to other parts of the base shall be via Warren Shingle Road. See base map on sheet 1 of the drawings.

4.6 AIRFIELD WORK.

4.6.1 Work on the airfield must be done “After Hours” which is considered to be from 12:00 am midnight until 8:00am the following day, on weekends, and when the airfield is closed (such as “down days”). When working on the airfield, coordination is required between the contractor, the inspector, the airfield manager, and with the base communications agency prior to beginning work.

4.6.2 When performing work on the airfield, it must remain functional and contractor interference with aircraft movement is minimized. The contractor shall give right-of-way to aircraft at all times. Aircraft will be directed by the control tower to avoid routes where the contractor is working as much as possible. Contractor shall provide and maintain all necessary cones, signs and flag persons as required to protect his work and operations. Closing of taxiways or runway shall not be permitted, however, portions of aircraft parking aprons may be closed for short periods (a day at a time) for the contractor to perform work. Note that contractor equipment vehicles must not interfere with the “line-of-sight” operation of air traffic control equipment that is operated by the base communications agency.

4.6.3 Clean Up. The contractor shall continuously sweep and remove, with brooms and vacuum sweeper, any debris or materials which he spills, drops, dumps or vehicles track on any airfield surfaces and properly dispose of them. At the end of each work day, the airfield and vehicle access routes shall be cleaned of any debris left by the contractor. Prior to departure each day, the contractor must receive approval from the airfield manager or inspector who shall check for residual debris. If failure to adequately clean the airfield surface results in airfield closure, the contractor will be held liable for all costs associated with said closure.

4.6.4 Restricted Areas. Portions of the airfield are located in Restricted Areas delineated by red lines or ropes. Work in Restricted Areas requires a 30 day notice to Security Forces, and therefore the contractor must schedule his/her work accordingly. The contractor may not enter a restricted area unless accompanied by a government escort, which shall be arranged if required for contract work.

4.6.5 Radio. Each day when working on the airfield, the contractor shall obtain a hand-held two-way radio from Airfield Management (Bldg 1060). The contractor shall establish and maintain two-way communication with the control tower at all times while on the runway.

4.6.6 Driving. Prior to operating vehicles on the airfield, arrangements must be made with airfield management (634-4018) for a flightline driver pass and briefing for all Contractor personnel to be driving on the airfield. Additionally, the contractor must submit a list of all vehicles, drivers, and equipment to be used on the flightline to the CO and airfield management. All vehicles and equipment to be used on the airfield shall have pneumatic tires.

4.6.7 Photography is prohibited on the airfield.

4.6.8. Airfield work must conform with UFC 3-260-1 Section 14, Construction Phasing Plan and Operational Safety on Airfields During Construction.

5. ENVIRONMENTAL REQUIREMENTS

5.1 Green Procurement Policy.

5.1.2 All waste materials generated by any work performed on a Government installation shall be handled, transported, stored, and disposed of by the contractor in accordance with all applicable Federal, State, and local laws as identified in FAR Part 23 or 40 CFR 1502. The following information could be found at the following sites:

http://farsite.hill.af.mil/reghtml/regs/FAR2AFMCFARS/FARDFARS/FAR/23.htm#P0_0 http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&sid=13dbb41748fb7c087e20b749e38902fc&rgn=div5&view=text&node=40:33.0.3.3.3&idno=40

5.2. Disposal of Removed Materials and Refuse.

5.2.1 There is no landfill at Beale AFB. The contractor shall haul all refuse, all excess excavated materials including soil and baserock, and all construction debris/rubble (including all asphalt and concrete) off Beale Air Force base and dispose of it or recycle it IAW State and County Regulations. The contractor shall provide for their own refuse service (dumpster) as required. Should there be a valid and specific use for suitable soil or baserock at Beale AFB for another project that the contractor determines to be economical versus hauling it off base, the material must first be properly tested by the contractor with 9CEV oversight for contamination and be cleared by the Beale Environmental Office. Any material stock-piled will be done son IAW the Beale AFB Soils Management Plan and guidelines stated in the digging permit (see paragraphs later in this section).

5.2.2 The contractor shall conform to Beale AFB Soils Management Plan.

5.3 Erosion Control & Pollution Prevention.

5.3.1 The contractor is responsible for implementing best management practices to ensure pollutants are not released or discharged to drainage ditches, culverts, or other stormwater runoff features in the project work area, and staging area. The contractor shall install and maintain erosion control system(s) such as silt fences, straw bale barriers or erosion control/stabilization blankets, as needed to protect storm water drainage features from sedimentation resulting from construction activity. Excess soils that are temporarily stored on-site during construction need to be covered with stabilization blankets to prevent exposure to the elements and to lessen chances of sedimentation due to storm water runoff.

5.3.2 Seasonal wetland areas are found across Beale AFB. Some are considered habitat for threatened or endangered species. To minimize potential impacts on these areas, equipment and vehicle traffic shall be restricted to paved areas or a CEVA approved haul route. Where off-road haul routes are approved by CEVA, the contractor shall install temporary construction fencing and staking as needed to clearly define this route, ensure all vehicles stay within its boundaries, and ensure nearby wetland areas marked by CEVA are protected from vehicle traffic.

5.3.3 Permits. Prior to start of construction, contractor must determine the total acreage of native ground to be disturbed by trenching/excavation/grading. If one or more acres will be impacted (disturbed), a National Pollutant Discharge Elimination System (NPDES) storm water construction permit will be required IAW NPDES Phase II Rules in effect 10 Mar 03. Included with the NPDES application, the contractor must also submit a Notice of Intent (NOI) and a Storm Water Pollution Prevention Plan (SWPPP), which must be approved before construction begins.

5.3.4 Dust Control. Take appropriate action to prevent the spread of dust to buildings and to avoid the creation of a nuisance in the surrounding area. Do not use water if it results in hazardous or objectionable conditions, such as flooding or pollution. Comply with all dust regulations imposed by local air pollution agencies, particularly Yuba County APCB Rule 3,3 (Dust and Fumes).

5.4 Hazardous Materials/Wastes (HM/HW).

5.4.1 Contractor shall be responsible for knowing which materials he is using or encounters that are hazardous material/waste, as well as for proper labeling, transportation and disposal procedures under County, State, and Federal regulations for hazardous material/waste. Coordinate with the base environmental office, 9 CES/CEV (634-2844), prior to HW generation for appropriate waste accountability, manifesting, storage and/or disposal. Any use of chemicals that result in a hazardous or toxic waste discharge must be pre-coordinated with the 9 CES/CEV.

5.4.2 If project specifications refer to another standard or agency specification (for example, a CalTrans specification or procedure), the contractor will be responsible for providing material safety data sheets (MSDS) for any chemical or toxic substance called for, and for coordinating with the CO in advance for the use and disposal of excess chemical and/or prevention of chemical-contaminated runoff. The contractor will obtain material safety data sheets for any chemical or toxic substance to be used, submit copies to the CO prior to use, and follow material safety data sheet instructions for any hazardous or toxic substances used. The contractor shall not store HM/HW on Beale AFB longer than 24 hours without written approval of the CO. The CO will coordinate longer-than-24-hour storage with 9 CES/CEV.

5.4.3 Used creosote containers, waste creosote, soiled brushes, asbestos and solvents shall be removed by the contractor from the base and disposed of as hazardous waste in accordance with County, State, and Federal regulations.

5.4.4 Spill Cleanup. Contractor shall be required to containerize and clean up (to the satisfaction of the CO IAW State & County Regulations) any liquid spills he/she causes at the work site that might endanger or degrade human health or the environment. Containerization and cleanup shall be accomplished such that no petroleum product, toxic chemical or hazardous substance enters a creek, gutter, culvert, storm drain, or appurtenance leading to natural drainage. This includes any chemicals or substances that cause soil staining or have other potential for air/water/soil degradation as determined by the base environmental coordinator and/or project manager. Coordinate use of any solvents, cleaners, or chemical cleaning or finishing agents with 9 CES/CEV for any outdoor work; for example, asphalt cleaning and/or finishing, roofing chemicals, etc. that could conceivably enter drainage systems or channels via rainfall and/or washing-off with water. The contractor should anticipate that any spills and discharges of deleterious substances will most likely be reported to and scrutinized by federal, state, or county environmental regulatory agencies; and that the contractor will be responsible for cleanup/remedial action according to agency specifications. Drips and leaks from mechanical equipment engines or hydraulic components should be containerized in drip pans. Any soil staining at the job site from such drips and leaks will require immediate cleanup (soil removal and disposal as hazardous waste) by the contractor at their own expense. Contractor must have available sufficient absorbent and/or spill cleanup materials for no less than a 50-gallon spill at the job site or anywhere on the base where his/her equipment may leak or cause spillage. Spill cleanup using government resources will be charged to the contractor at an amount determined by the CO.

6. USE OF UTILITIES. Reasonable quantities of water shall be furnished to the contractor without charge via fire hydrants designated by 9 CES/CEOIU (634-3659/3605). The contractor shall be responsible for providing all materials and operations necessary to make connections and/or hookups to these hydrants. The contractor shall provide for their own sanitary facilities, telephone service, electrical power and lights.

7. UTILITY SHUTDOWNS. No exterior utility service shall be interrupted to make connections, to relocate, or for any purpose without approval of the CO. Request for permission to shut down services shall be submitted, in writing, to the CO fourteen (14) calendar days prior to date of proposed interruption. The request shall give the service affected, the location, time and duration of shutoff. Report any utility breaks or damage immediately to the inspection staff.

8. GOVERNMENT FURNISHED EQUIPMENT OR MATERIALS. None.

9. SAFETY. The contractor shall conform to the latest edition of the Air Force Occupational Safety and Health Standards (AFOSH) developed in accordance with AFR 127-12. The CO may by written order, direct added AFOSH and safety and accident prevention standards as may be required. Trenching deeper than four feet must comply with OSHA 1910 & 1926. Open holes or trenches shall be barricaded or covered with plywood whenever left unattended by the contractor. Also, attention is directed to the requirements of AFOSH Standard 91-25, “Confined Spaces”.

10. ABBREVIATIONS. Abbreviations used on the plans and in the specifications shall be that as outlined by the 1992 CalTrans Standard Plans No. A-10A and if not listed there shall be that as listed below, on the plans, or in a common English dictionary.

11. STORAGE AREAS. There is only one approved storage area at Beale AFB for contractor storage and staging areas for vehicles, trailers, materials and equipment. The general location for this site is: near J and 9th Streets-- the inspector will determine and point out the specific location in the field. The government will take no responsibility for lost or stolen equipment or materials, therefore, the contractor must furnish his own security fencing, if desired.

12. EMERGENCY ACCESS. Fire trucks and emergency equipment shall have emergency ingress and egress to all areas at all times.

13. AS-BUILT DRAWINGS. When encountered or at the time of installation, the locations of underground utilities shall be measured and recorded on a set of plans, if different from that shown on the plans. The contractor shall locate, dimension and record all pertinent data such as: valve/box locations; connections to existing; material types; inverts or top of pipe elevations; pipe slopes or grades; depths; lengths; and so forth. Regarding existing underground utilities encountered, only the sections discovered need to be mapped. The contractor shall give the marked-up plans to the CO at the end of each task order.

14. DIGGING PERMIT.

14.1 In order to avoid damaging any underground utilities, such as sewer, water, gas, electrical, telephone, cable TV, and possibly others, the contractor must obtain digging permits. The contractor shall process, obtain and maintain a digging permit required for any excavation, grading, or road patching work deeper than three inches (3”), prior to beginning construction. Underground Service Alert (USA) limits the number of work locations for each permit to three, however, one general location may have several sub-locations such as at each corner of an intersection or the front and back of a facility. Depending on the project and determination by USA, the contractor is responsible for obtaining as many digging permits as required for a particular task order or contract.

14.2 The contractor shall obtain forms and initiate the digging permit process at Bldg 2539 (near Doolittle & B Sts), room 204, tel. 634-4531. The contractor must fill out the permit form (AF Form 103) with pertinent information, including legible name, phone number, and e-mail address (if available) of contractor point of contact, contract number, brief description of work to be done and dimensions of excavation. The contractor must attach a plan showing the exact location and dimensions of the respective work with a “North” arrow (contract drawings with areas highlighted is acceptable).

14.3 Before the 9CES Operations Flight will approve a digging permit, as a minimum it must be processed through: Wing Safety (North end of Bldg 1086), Communications (Bldg 2159 behind Wing HQ), and Environmental (Bldg 2561).

14.4 Also, as a part of the digging permit process, the contractor shall be required to mark all locations of excavation work on site with white spray paint or stakes with flagging. Existing utilities will be marked in the field by the respective agency in proposed construction areas. The contractor is required to maintain these markings (or reference points) so that the pertinent agency does not have to duplicate their work. Since the processing of a package of permits may take up to two weeks, the contractor must plan work accordingly.

15. EXCLUSION PERIOD. No earthwork or paving will be required during the winter months between November 1 and May 1 and such period has not been considered in computing the time allowed for completion. If weather conditions are drier or warmer than expected during this exclusion period, the contractor may perform work during any part of this period upon receiving approval from the CO. However, the contractor must complete any work started and leave the site in a safe condition, such as leaving out cones, placing floppy reflective markers, temporary striping, and so forth as directed by the CO. The contractor must also notify the CO at the start of each week he intends to work or not work during these months. The CO. may revoke the right to work during the exclusion period for any reason, at any time, for sake of efficiency or quality of product.

16. VEHICLE ACCESS. All contractor and subcontractor commercial vehicles and trucks need to access Beale AFB via the Wheatland Gate and be subject to security inspection. Private vehicles not carrying any supplies or tools may come through any gate, however, the driver must obtain a pass that requires valid registration, proof of insurance, and the driver’s license. Extended vehicle passes may be obtained and Pass and I.D. office.

SECTION 01100

SUBMITTAL REQUIREMENTS

1. SUBMITTALS. This section applies to the items listed in the table on the following pages and constitutes the list of required submittals and/or printed data for each task order under this contract.

2. Submittals shall be furnished in three (3) copies (UON) along with one AF Form 3000. A copy of the Form 3000 will be returned to the contractor after approval or disapproval by the CO. In no case will submitted items be incorporated into the work unless prior approval is obtained from the CO. Copies of accepted submittals will be retained. All submittals must be furnished and accepted prior to final acceptance of the contract work and prior to processing invoice for final payment. Note: Prior to construction or any work done per T.O., the Contract Progress Schedule submitted on AF Form 3064 is to be part of the submittal requirements to be submitted on AF Form 3000 for approval or disapproval.

3. Table Key.

A = Certificates of Compliance

B = Shop Drawings/Sketches/As-builts (3 initial copies, final as-built copy on vellum)

C = Samples (one only)

D = Color Selection (two only)

E = Manufacturer's Recommendations

F = Manufacturer's Warranty/Guarantee

G = Manufacturer's Catalogue/Brochure and Pertinent Data

H = Operation and Maintenance Instructions including Parts List

I = Lab/Performance Test Results/Reports/Calculations/Logs

J = Material Safety Data Sheets/Disposal Plan

K = Demonstration Test/Test Strip

L = Videos/Photos

M = Manufacturer’s stamp

N = Professional Engineer’s Stamp

O = Permit, Documentation, Plans

SUBMITTAL SCHEDULE

YES/NO

KTR SUB#

03100-2.4 G

Airfield Paint & Beads, Procedure

SECTION 01200

FIRE PREVENTION

1. The following fire prevention practices are requirements for adherence by private contractors performing work on Beale AFB.

2. Prior to performing "Hot Work" (welding, burning, lead-melting, blow torches, tar pots, etc.), or operating other flame producing devices, the contractor shall request a Portable Gas/Arc Equipment Cutting and Welding Permit. The Fire Department Technical Services Section, tel. 634-8677, will issue this permit. The welding area will be checked for combustibles, including flammable liquids.

2.1 All holes or spaces will be covered to prevent sparks or slag from entering.

2.2 The contractor shall provide a suitable fire extinguisher.

2.3 The area where "Hot Work" operations have been conducted will be thoroughly checked after work is completed.

2.4 Tar kettles will be no closer than 20 feet from any building.

3. Oil painting materials (paint, brushes, empty paint cans, rags, paint clothes, drop cloths, etc.) and flammable liquids shall be removed from the building at the end of the workday. Such painting materials and flammable liquids shall be stored in a location approved by the CO.

4. Accumulations of trash, paper, shavings, sawdust, excelsior, boxes and other packing materials shall be removed from the building at the close of each day. Also, the areas outside of buildings undergoing work shall be kept clear of trash and other discarded combustibles.

5. The storage of large quantities of combustible building materials, such as lumber or paper products, shall be kept in areas approved by the Fire Department.

6. All portable electric devices (saws, sanders, compressors, extension cords or lights) not required to be energized shall be disconnected at the end of each working day.

7. Any fire, NO MATTER HOW SMALL, shall be reported to the Fire Department immediately. Dial 911 for all emergencies on any base or commercial phone.

8. Fire hose or extinguishers in buildings shall not be removed from their locations or used for any purpose other than a fire.

9. Fire hydrants shall not be used without special permission from the Fire Department Technical Services Section, tel. 634-8677. If special permission is granted for the use of fire hydrants the contractor will use a suitable hydrant wrench for opening and closing the hydrant. Pipe wrenches will not be used. A clear space of fifteen (15) feet on both sides of fire hydrants shall be maintained at all times.

10. Smoking is strictly prohibited in or near areas where flammable liquids, highly combustible materials or explosives are stored, handled or processed. NO SMOKING signs will be observed and restrictions complied with.

11. The contractor or his designated representative will notify the Fire Department of any utility shut down that might affect an installed Fire Protection or Fire Detection System.

12. Prior to quitting time, the contractor shall make a check of the building or area to assure compliance with the above and insure that the building and area are left in a Fire Safe Condition.

13. Burning of trash and waste is strictly prohibited.

14. Bulk storage of gasoline is strictly prohibited.

15. The Base Fire Department is available for advice and assistance on any matters pertaining to Fire Prevention and Fire Protection--call Technical Services Section, tel. 634-8677.

SECTION 02100

EARTHWORK

1. GENERAL.

1.1 Earthwork shall conform to the provisions of Section 19, "Earthwork", of the CalTrans Standard Specifications (except for payment) and these specifications.

1.2 Work shall consist primarily of trenching, backfilling, compacting, shoring, grading, constructing swales, and removing existing concrete, roots, rock, hardpan, AC and AB as required to perform the specified work.

1.3 Dewatering. The control and removal of water from project areas, regardless of the source, as necessary to perform work under this contract is solely the responsibility of the Contractor. The Contractor shall protect his work from the invasion, penetration and runoff of water, as required. If wet or saturated ground is encountered, the Contractor shall perform all operations as necessary to dewater and use it or dispose of it. When the construction of new work interferes with the existing drainage, it is the Contractor's responsibility to provide a satisfactory bypass drainage system at their expense.

1.4 Blasting. Blasting shall not be permitted.

1.5 Surveying. All surveying and staking shall be the responsibility of the Contractor.

1.6 Protection. Newly graded areas shall be protected from traffic and erosion, and any settlement or washing away that may occur from any cause, prior to acceptance, shall be repaired and grades reestablished to the required elevations and slopes. All disturbed soil or vegetation shall be restored or replaced to their original condition and reseeded with a native erosion control seed mix (brome, lupine, clover) to the satisfaction of the CO.

1.7 Finish Grades. Finish grades or subgrades shall be of constant slope between contours, spot elevations, and/or existing grades. The maximum cut or fill bank shall be 3:1 (run:rise) unless otherwise specified.

1.8 Soils data for the general area is available upon request, however site specific data must be determined or safely assumed by the contractor's engineer.

1.9 Prior to any earthwork, the contractor is required to obtain a digging permit IAW Section 01000-14.

2. EXCAVATION.

2.1 Material to be excavated consists primarily of bushes, trees, roots, rock, grass, weeds, asphalt concrete (AC), aggregate base (AB), concrete and native soil. Contractor can expect to encounter solid hardpan or rock and/or extensive tree roots at shallow depths in the project areas.

2.2 All unsuitable excavated material; waste and debris shall be disposed of by the contractor IAW Section 01000, paragraph 5.1, “Disposal of Removed Materials and Refuse” of these specifications. See paragraph 3.4 below for definition of suitable material. This includes removing any residual surface rocks or debris (greater than 2 inches) brought up by any contractor operations.

2.3 Clearing. Remove all organic and unsuitable material in areas designated for drainage work, paving, landscaping, or construction including rock, cobble, roots, rubble and debris. Remove tree roots to a depth of 12” below subgrade in areas to receive new concrete (patios, D/W’s, S/W’s, CS’s) and in areas designated for root removal.

2.4 Pavement.

2.4.1 Where a portion of existing concrete surfacing is to be removed, the outline of the area to be removed shall be cut on a neat line with a power-driven saw to a minimum depth of 0.25-foot before removing the surfacing. Asphalt concrete pavement need not be saw cut, but may be cut using an asphalt cutting wheel or other such device which will produce a neat straight line such that surfacing not to be removed will be left undisturbed intact. Where possible, one edge of the trench shall be at an existing joint or crack in the pavement and the other edge must be sawcut.

2.4.2 When crossings of sidewalks along the street are required and tunneling is impractical, a minimum width of four feet must be removed. Where possible, one edge of the trench shall be at an existing joint or crack in the pavement and the other edge must be sawcut as specified above. Score a crack control joint on both sides of new sidewalk section.

2.4.3 Existing patios and driveways are 6” to 8” thick concrete and have 12” x 12” thickened edges at the perimeters. Sidewalks are 4” to 6” thick concrete.

2.5 Underground Facilities/Utilities.

2.5.1 The location of all known existing underground utility services is unknown. CONTRACTOR MUST EXERCISE EXTREME CAUTION when excavating and trenching in order to avoid damaging existing facilities and utilities. Prior to any excavation, trenching or grading, the contractor must obtain a digging permit IAW Section 01000, paragraph 14.

2.5.2 Plans of existing sewer and water mains in the project area are available for the contractor's use upon request. The Contractor, at his/her expense, shall perform on-site utility investigation prior to the start of work as required. Contractor damage to existing utilities shown on these drawings or identified with the digging permit, must be repaired by the contractor at no additional cost to the government.

2.5.3 When unknown lines are exposed, their location and elevation shall be mapped on the as-built drawings.

2.6 Excavations shall be supported so that they will be safe and that the ground alongside the excavation will not slide or settle. Existing facilities in the vicinity of work will be fully protected from damage.

3. FILL AND BACKFILL.

3.1 "Pea gravel" if required shall be 3/8" washed round rock as manufactured and sold by Patterson Sand & Gravel in Sheridan, CA or an approved equal.

3.2 Drain rock shall be 1 1/2" to 2 1/2" round or crushed rock as manufactured and sold by Patterson Sand & Gravel in Sheridan, CA or an approved equal.

3.3 Sand used for the purpose of backfill shall be 1/4" minus fill sand as manufactured by Patterson Sand & Gravel in Sheridan, CA or an approved equal.

3.4 Suitable Material. Suitable material is defined as native soil cleaned/free of roots, branches, rocks and debris larger than two inches (any dimension).

3.5 Resurfacing. All excavations, fills, and trenches shall be resurfaced with the type and thickness of bases, surfacing, pavement, or lawn as existing UON. Residual surface rocks and debris larger than two inches shall be removed by the contractor as included work with the T.O.

4. TRENCHING AND BACKFILL.

4.1 Pipe or conduit shall be laid in trenches of minimum width to lay the pipe to the lines and grades established by the plans. The bottom of the trench shall be graded and prepared to provide a firm and uniform bearing throughout the entire length of the piping. No backfilling shall occur until after the pipe has been inspected. No open trenches shall be allowed during non-working hours. Backfill, boards, or other approved material may be used to meet this requirement. Trenches shall be kept free of water and as dry as possible during bedding, pipe-laying, and for as long a period as required.

4.2 During backfilling operations, the conduit or pipe shall be rigidly supported so that no movement of, or damage to, the pipe or joints will result. Rocks greater than 3 inches and other debris encountered during trenching operations shall be brought to the surface of the ground and disposed of. Trenches for pipe shall be smooth and free of jagged rubble or sharp objects, which will cause abrupt bending stresses and uneven weight distribution during backfilling operations. The backfilling of pipe trenches shall be accomplished in a manner that will protect the pipe from damage from sharp objects. Rocks shall not be directly under the pipe. Backfill material and sand bedding shall be compacted until the backfill material, after settlement, matches the original surface, unless otherwise specified. Sunken spots in backfilled areas shall be refilled and compacted by the Contractor at his expense, including furnishing, placing and compacting the fill material.

4.3 Grass swales shall be constructed over/along all new pipe or underdrain lines UON. Generally, the swales shall flow in the same direction as the pipe drains but at one percent (1.0%) minimum slope UON on the plans. Swales over pipe or underdrains shall have a continuous flowline "across" DI’s IAW the details. All protruding stumps, roots, rocks and debris shall be removed and disposed of. Low spots or high spots in grade greater than 0.05 feet are unacceptable and shall be corrected by the contractor at his expense.

5. COMPACTION.

5.1 The contractor shall achieve compaction using an approved vibratory roller, tamper or equal. If compaction appears to be inadequate as evaluated by the CO or their representative then compaction tests shall be required in these areas. The contractor shall bear the expense and make all arrangements for density tests by a certified testing agency. Contractor shall coordinate with the inspector in advance on the date and time of testing. The inspector shall designate where the compaction tests are to be taken. Compaction shall be IAW the below table.

5.2 Degree of compaction is expressed as a percentage of the maximum density obtained by ASTM Test Method D 1557, Method B or D. Maximum density shall be determined in accordance with ASTM D 2922 (Nuclear Method) or ASTM D 1556 (Sand Cone Method). Since the Nuclear Gage method tests for compaction at a specific depth only, the CO or his representative may require tests at other depths if the fill/subgrade/base appears to be unstable or not compacted properly. Before bringing nuclear compaction testing equipment on base, the contractor shall coordinate with and provide pertinent information to Beale’s Bioenvironmental Engineer (6601 B St, tel. 634-2045).

SECTION 02200

PAVING WORK

1. SCOPE. Paving work for this project consists primarily of spot repairs/patching and shall include furnishing all labor, materials, tools, equipment and incidentals, and doing all the work involved as specified herein complete in place, including subgrade preparation, aggregate base, tack coat, asphalt concrete, sawcutting, restriping, and submittals as shown on the plans, as specified in these specifications, and as directed by the CO.

2. MATERIALS.

2.1 Aggregate base shall conform to Section 26, "Aggregate Bases," Class 2, of the CalTrans Specs.

2.2 Tack Coat ("paint binder") shall conform to Section 94, "Asphaltic Emulsions" of CalTrans, slow setting grade SS1h, and shall be applied to all AC pavement to be overlaid or slurry sealed at the rate of 0.10 gallons per square yard of surface covered. A tack coat shall also be applied at the same rate around the edges of existing AC for all spot repairs.

2.3 Asphalt concrete shall be Type B, 1/2" maximum aggregate size mixed with 5.5% AR 4000 asphalt oil and shall be produced by a commercial batch plant. The job-mix formula shall be submitted by the Contractor and shall also indicate aggregate gradation.

2.4 Slurry Seal.

2.4.1 Slurry seal materials shall conform to CalTrans Section 37, "Slurry Seal", type I. The finished thickness of the slurry seal shall be one-quarter inch (1/8") minimum.

2.4.2 The Contractor shall perform a demonstration test strip, which shall be a part of his required submittal. This test will be inspected by the CO, the engineer and the inspector, who must approve the submitted method and result. The Contractor shall make adjustments to his slurry mix, application process and equipment (all at no additional cost), when directed by the CO, in the event the slurry seal is substandard at any time during the tests and remainder of the project.

2.5 See Section 01100 entitled "Submittal Requirements," of these specifications.

3. CONSTRUCTION.

3.1 All work shall be performed in accordance with the appropriate sections of the CalTrans specs (except the payment provisions therein): Section 26, "Aggregate Bases"; Section 37, "Bituminous Seals"; Section 39, "Asphalt Concrete"; Section 84, "Traffic Stripes and Pavement Markings"; Section 93, "Liquid Asphalts"; and Section 94, "Asphaltic Emulsions". Additionally, refer to Section 02100, "Earthwork" with regards to repair areas, grading and compaction requirements.

3.2 It is solely the Contractor's responsibility to determine when weather conditions are suitable for application of any paving materials such as prime or seal coats or AC. The government shall not be responsible for delays or losses to the Contractor due to unsuitable weather conditions.

3.3 Preparation. In all areas to receive overlay, crack sealing or slurry seal, spray all weeds with appropriate, long-lasting herbicide. After herbicide has had sufficint time to work IAW manufacturer’s recommendations, all vegetation shall be completely removed. Thoroughly clean all areas to be paved IAW CalTrans, including the removal of old pavement reflectors and buttons and their disposal. The prep work listed herein shall be included with the respective items of work.

3.4 REPAIR WORK.

3.4.1 The Contractor shall repair failed areas of pavement where there is extensive cracking, breaking, and/or settling in streets and lots IAW the plans, which show generally the areas requiring repair. The total estimated quantity of repair areas for this project is listed in the Bid Schedule. The Contractor shall mark out the specific areas to be repaired on the pavement with orange spray paint. Repair areas shall be rectangles with the smallest being one square yard. The marked-out areas shall then be inspected by the engineer who shall direct the Contractor to make any adjustments including the addition, subtraction, moving, or redesignation of areas as required to repair the worst areas and to make up the contract total area. The Contractor shall perform the readjustments using white spray paint on the pavement. The Contractor shall then label each area with its respective square yardage and provide the inspector with a tally sheet listing the areas, which shall total up to the quantity designated in the Bid Schedule. After the engineer's approval, the Contractor shall make the repairs IAW these specs.

3.4.2 The edges of existing pavement shall be saw or wheel cut straight and square. Note that the existing AC pavement may be up to 6" thick. Remove existing AC and AB in repair areas to a depth of one-foot (12"). Existing AC shall be removed and disposed of separately from existing AB and soil (which may be mixed together). Compact subgrade as required to obtain relative density of 95%. Next place new AB and apply water and compaction equipment as required to obtain relative density of 100%. After applying prime coat, place and compact new AC as specified in CalTrans such that the finished compacted thickness is 3" minimum. The finish pavement grade shall match with existing AC at the edges, however the repair area (patch) shall be crowned 1/4" to 1/2".

3.5 TACK COAT.

3.5.1 The tack coat shall be applied to surfaces only when it is dry, the ambient temperature is 50SYMBOL 176 \f "Symbol"F or above, and the temperature has been above 35SYMBOL 176 \f "Symbol"F for 12 hours immediately prior to application, unless otherwise directed. Pavement surfaces must be approved by the inspector prior to application of the tack coat. Areas where paving will abut such as concrete or existing paving shall be tack coated.

3.5.2 After application of the tack coat (SS1h) sufficient time shall be allowed for complete separation of asphalt and water in the emulsion before the AC overlying course is placed. The Contractor shall not apply tack coat to any surfaces that cannot be overlaid that same day.

3.5.3 Traffic shall be kept off tack coated areas, except when placing the AC overlying course. The Contractor shall repair and recoat deficient areas at his own expense. If necessary, to prevent the removal of tack coat, a light application of sand shall be placed on the coat in the areas immediately in front of the tires of the paver or spreader truck, limited to the width of the tires.

3.6 OVERLAY/SLURRY SEAL.

3.6.1 Prior to overlaying, apply paving fabric, such as Petromat or approved equal, to designated areas IAW CalTrans and the manufacturer's recommendations.

3.6.2 Place and compact as specified in CalTrans new AC overlay or slurry seal areas as designated on the plans. The AC shall be compacted to 100% lab density as determined by the Marshall method (50 blows). All areas receiving overlay or slurry seal shall be finished rolled with a pneumatic-tired roller, three passes/coverages (per CalTrans Section 39-6.03), in addition to other compaction operations specified in CalTrans.

3.7 JOINTS and TRANSITIONS.

3.7.1 At joints or transitions to adjacent pavements, if a ground butt joint is not called for, the Contractor shall feather the AC overlay out over a distance of eight feet (8’) at all connections with other streets or lots. Coordinate with the inspector on these transitions and locations.

3.7.2 The joints between lanes of new work or between new and old paving shall be constructed so as to insure uniform bond, texture, density, and smooth finished surface as in other areas of paving. Finished pavement grades shall be of constant slope between contours, spot elevations, and/or existing grades.

3.8 PROTECTION OF PAVING.

3.8.1 Satisfactory condition of each phase of the paving shall be maintained at all times. The Contractor shall provide all necessary pedestrian and traffic barriers as required to avoid damage to each phase. Any and all damage shall be repaired by the Contractor prior to the next paving operation. Barriers shall include cones, signs, flagging, and wood barricades.

3.8.2 After final rolling no vehicular traffic shall be permitted on the pavement for at least eight (8) hours.

3.9 Surface Requirements. When a 12-foot straightedge is laid on the finished pavement in any direction, the surface shall not vary more than 0.02-foot from the straightedge.

3.10 Testing. If the application rate, compaction, or quality of any paving materials appears questionable as determined by the Engineer, the Contractor shall provide testing and certification by a bona fide, licensed laboratory to determine that the respective materials and application rates meet this specification in all aspects. The cost for this testing and certification shall be borne solely by the Contractor.

4. DAMAGE. Any damage to existing or new paving, structures, or striping by the Contractor shall be repaired in conformance with these specs to the satisfaction of the CO. Damage shall be defined as cracking, settling, fuel spills, breakage, or marring of finished pavement surfaces, paint, markers, and existing structures as determined by the CO.

SECTION 02300

CRACK & JOINT SEALING

1. SCOPE. Crack and joint sealing shall include furnishing all labor, materials, tools, equipment and incidentals, and doing all the work involved as specified herein complete in place, including submittals, joint and crack cleaning, preparation, sawcutting, routing, and sealing, as shown on the plans, as specified in these specs, and as directed by the CO.

1.2 Sealing work shall consist primarily of sealing cracks 1/16-inch or wider in existing AC and concrete pavement including joints between slabs and other pavement.

2. MATERIALS.

2.1 AC Pavements. Crack and joint sealing materials shall be a rubberized, fuel-resistant, crack filler/sealant manufactured for sealing random cracks in AC and compatible with hot AC overlay, such as Koch Product #9015-M or approved equal.

2.2 Concrete. Crack and joint sealing materials shall be a silicone joint sealant, one-part, cold-applied, self-leveling, as manufactured by Dow Corning, product 890-SL, or approved equal.

2.3 ‘Backer Rod’. The backing material (or “blocking” mat’l) used to seal off the lower portion of the joint shall be a cylindrical (“rod”), readily compressible but non-shrinking material such as a butyl or neoprene foam rubber, which is not reactive with the sealant, such as that manufactured by Applied Extrusion Technologies (AET), product HBR Backer Rod, or approved equal. The material shall not soften or melt at pouring temperature of the sealant.

2.4 The sealing operation, application rate, and curing shall be IAW the manufacturer's recommendations and shall be checked by means of a test strip performed by the contractor prior to beginning work, which shall be witnessed by the CO, engineer, and inspector. The contractor shall make adjustments as recommended by the CO.

3. PREPARATION. In all areas to be crack sealed, spray all weeds with appropriate, long-lasting herbicide. After herbicide has had sufficint time to work IAW manufacturer’s recommendations, all vegetation, debris and dirt shall be completely removed from cracks and joints by blowing out with compressed air (high pressure). If necessary, in order to thoroughly clean out joints and cracks, the contractor shall employ more severe methods such as sand blasting, blow torching, wire brushing, plowing, and/or routing. Existing expansion joint materials may remain in place, except for loose material.