DEMOLITION

WORK PLAN

for

Wiseburn High School

Demolition Activities

2 01 N. Douglas St.

El Segundo, 90245

Prepared For:

Mr. Anthony Mardirosian Senior Project Manager

Balfour Beatty Construction

2 Park Plaza, Suite 1000

Irvine, CA 92614

(949) 502-4000

Prepared By:

National Demolition Contractors

1536 W. 25th Street

San Pedro, CA 90732

(310) 732-1991

April 2015

1.0 INTRODUCTION

1.1 PURPOSE OF THE DEMOLITION WORK PLAN

National Demolition Contractors (NDC) has prepared this Demolition Work Plan, hereafter referred to as the Work Plan, for the purpose of providing a detailed description of demolition activities that NDC will be implementing during on-site activities at the Wiseburn High Project. The procedures described in the Work Plan comply with industry standards and Federal, State, and local governing regulations.

1.2SITE LOCATION AND DESCRIPTION

The project site is located at 201 N. Douglas St., El Segundo, CA 90245. The facility consists of a former 4 story commercial building and the remaining balance of the property being surface parking. The buildings current condition is a structural shell all interior improvements have been removed. The total floor space encompasses approximately 335,000 square feet. The work site is located within a commercial area.

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1.3GENERAL WORK ACTIVITY OVERVIEW

NDC shall provide all labor, equipment, supplies and services to complete the Demolition at the Wiseburn site. The project will be completed in a series of stages following the Preconstruction and planning phase that includes the submittal of Work Plans, Schedules, Notifications and Certifications. Furthermore, during this phase NDC will confirm all utility connections have been de-energized and terminated to the structure onsite.

Demolition Activities

Project activities will involve the complete demolition, preparation, loading and transportation for off-site disposal of sections of the building structure, selective demolition and salvage throughout the remaining building area; in addition to the above the following items are also included in this scope of demolition activities. :

Window Removal, DisposalRoof, Ceiling, Walls, and Partitions, etc.Structural Columns, Beams, Slabs and Foundations All floor slabs on ground levelSelective Slab removal on upper floorsSalvage of mechanical Room Louvers

2.0PRECONSTRUCTION ACTIVITIES & MOBILIZATION

2.1 DEMOLITION SUBMITTALS

Partial demolition of the Wiseburn HS Building will be completed under the direction of the National Demolition Contractors. The following information plans, and/or programs will be required and utilized during the completion of the proposed project.

2.1.1Detailed Construction Schedule

The detailed construction schedule includes durations and milestones for all activities anticipated during structure demolition and salvage and site work. The schedule will be updated to reflect scheduling changes, delays, and/or improvements.

2.1.2Agency Notifications

Osha and SCAQMD notifications will be completed and submitted to the respective agency prior to the start of work on this project.

2.3MOBILIZATION

Following the preconstruction activities, NDC will make preparations for and begin mobilizing to the Wiseburn facility. One of the first items to be accomplished will be to establish work areas. Equipment and materials necessary to complete the project will be moved to the facility and staged at predetermined locations within the site boundaries. In addition to the Equipment and Supplies Lay down Areas, the following work areas will be established:

Window Removal Areas;Slot Cutting Slabs 2nd Floor thru Roof @ Column Lines 2 & FCafeteria Demolition Removal AreaFirst Floor Slab Removal AreaMe3chanical Room Louver Salvage AreaElevated Slab and Roof Opening AreasSite Paving and Landscape Removal Areas

The work areas listed above, as well as other tasks that will be conducted during the mobilization phase of this project, are described in the following sections.

2.3.1 DEMOLITION SALVAGE STAGING AND LOADING AREAS

Multiple demolition salvage, staging and loading areas will be established. These areas will be accessible to expedite loading and transport activities. Surface cover in these areas will be durable enough to withstand storage and movement of heavy scrap material without breaking apart and creating difficulties when loading the material or impacting the areas.

2.4UTILITY SYSTEMS IDENTIFICATION AND LOCK-OUT

Prior to the initiation of any field work, existing facility utilities will be identified. These procedures will be conducted by the project Electrical Contractor with NDC to verify completion. It will be necessary to cut / lock-out all of the utilities and piping in all areas of the building prior to demolition / dismantling. NDC crews will determine what if any systems need to remain active to facilitate the demolition activities in each of the activity areas. Lock-out procedures will generally include the following objectives:

Lock-out (close, disconnect, plug, and/or blank) and tagging valves;Lock-out and tagging, or disconnection of electrical systems;Capping/plugging of sewer and storm water lines as necessary Documentation of utility caps.

2.5SITE SECURITY

NDC understands that the facility is currently surrounded by security fencing that will prevent unauthorized individuals access to the site. NDC will control access to work areas during operating hours through the monitoring of a single ingress/egress During off-hours, sensitive work areas will be cordoned off with temporary barricades, delineators and caution or danger tape.

2.6TEMPORARY FACILITIES AND CONSTRUCTION CONTROL

NDC will establish temporary facilities. Adequate sanitary facilities, fences, barricades and scaffolding will be provided as needed. Storage for tools, light equipment and appropriate signs will also be provided. Temporary services will be coordinated with the WISEBURN representative for existing and future construction activities, demolition activities, and site traffic.

2.6.1Traffic Control

Given the amount of debris and scrap that will be removed, the materials will be loaded directly from or adjacent to the demolition areas into awaiting transportation vehicles. During all transport activities National will utilize flagmen in order to minimize the disruption of traffic on Douglas St. If requested National can provide Haul Routes that will be followed depending upon the facility to receive material.

In the event that an alternate route is identified, the contractor will verify the new truck route with WISEBURN personnel prior to initiating field activities.

Onsite traffic control will be the responsibility of the NDC onsite project manager.

2.7 INTERIM DELIVERABLES

Once NDC has established operations at the WISEBURN facility, NDC Project Management will provide for ongoing documentation of activities during an organized meeting between NDC Project Management, supporting subcontractors and WISEBURN personnel and/or representatives.

3.0GENERAL

3.1.1Pre-Demolition Inspection

NDCs policy, prior to beginning work is to coordinate a thorough walk-through of the intended work areas with the WISEBURN representative to identify existing conditions of the work areas. During the inspection, any structural or finished surface defects will be documented as a means of determining whether our activities had a negative impact on the building after it has been completed.

Contingency Plans

In the event of any emergency such as fire, earthquake, worker injury, etc., a Contingency Plan will be followed to ensure the rapid communication of an emergency situation to project members to affect a swift and safe evacuation of the work area until the emergency has subsided.

NDC will take all necessary precautions to avoid accidents within the work place by anticipating their causes. To prevent the possibility of fire, our team utilizes temporary lighting with protective lens cages, strategic placement of fire extinguishers, Ground Fault Circuit Interruption and worker training.

Should a worker be injured inside containment, NDC will take the appropriate course of action depending upon the type of injury involved. For example, if a worker suffers a fall, the team will determine whether the employee can exit the area under his/her own power. If not, a stretcher or equivalent device will be employed to remove the worker. If a worker is stricken with heat stress, the worker will be removed from the work area and given adequate fluids until his/her body temperature has returned to normal. Whenever possible, first aid will be administered from the OSHA approved kit maintained on-site. In order to obtain swift emergency service assistance from the police, fire department or local hospital, a list of emergency telephone numbers will be posted in strategic areas in and around the facility.

3.1.3 Site Visitors

All visitors will be requested to check in with Construction Manager.

3.2CODES, REGULATIONS AND STANDARDS

3.2.1Federal, State, and Local Regulations Affecting Work

NDC will comply with all applicable local, State, and Federal regulations governing demolition

3.2.2 Licenses and Registrations

NDCs subcontractor, BMW Construction Specialists, is a licensed asbestos abatement contracting firm in the State of Maryland, Asbestos License No. M21-00-319HA and Maryland Contractor's License number 555788. Copies of BMWs license and registration are included in Appendix C of this Work Plan.

3.2.3 Notifications and Forms

All notifications to applicable regulatory agencies will be submitted 10 days prior to the commencement of demolition activities. These notifications include:

SCAQMD

OSHA

NDC will post a site safety plan, specific to the facilities on the property, which will include provisions for emergency evacuation from work areas. (See also Contingency Plans.)

4.0UTILITIES

4.1.1Domestic Water

Natural Gas

Sewer Lines

The above utilities if active at the start of demolition will be cut / capped by the project plumbing contractor. Upon completion of cut and capping operations, lines will be left in place for removal during the general demolition. The piping will be staged, hauled offsite and recycled.

4.1.2Overhead Electrical Lines

Existing on the east side of the facility is the electrical distribution by overhead electrical lines running adjacent to the building approximately 20 from the building face. These power lines will stay active throughout the demolition activities. During all above grade demolition activities being performed on the east side of the structure a spotter will be utilized to insure safe removal of structural members of the building without impacting the live power lines.

5.0DEMOLITION ACTIVITIES

The demolition and dismantling activities at the WISEBURN facility encompass a significant portion of the of the existing building being removed in its entirety in addition selective demolition will be performed in various areas throughout the remaining structure . The safe conduct of these activities is a critical part of the project. NDCs goal is to provide the demolition and dismantling sequencing of these activities, to create a comprehensive approach.

In general, the approach will include a wide variety of procedures. The most important aspect in the development of these procedures will be the safe conduct of the work. NDCs procedures will limit the use of labor to the most controlled and safe conditions and rely upon mechanized means of removal wherever possible. Shears grapples, and other modern hydraulic tools and implements will be utilized. Wherever possible, large structures will be removed to ground level using mechanized means. Subsequent sizing of scrap materials and other preparation will take place at grade level.

The scope of work discussed in this Work Plan encompasses the complete removal of select above-grade and below grade structures and selective demolition. The following sections will outline the proposed demolition activities for the WISEBURN project site.

NDC will coordinate the necessary equipment and personnel to begin preliminary demolition activities. These mobilization activities will include the following

Capping/disconnection of utility lines Establishment of loading areas and transportation routes (on-site/off-site)

NDCs on-site superintendent will verify that all hazardous, regulated and asbestos containing materials have been removed prior to demolition.

5.1 WINDOWN REMOVAL

Prior to the start of complete structural demolition of the North and East Bays of the building NDC will remove all existing windows within the demolition area. The removal of these windows will be accomplished with the use of window suction cups. The window frames will first be disassembled to minimize the possibility of cracking or breaking of the windows during their removal. Once frames have been disassembled suction cups will be attached to the glass and the windows will be removed and palletized for removal from the building and salvaged or recycled. Upon removal of the windows on the upper floors NDC will install the required safety barriers in order to make safe these wall openings. On floors 2-4 the palletized window glass will be placed by a material loading area accessible below with a grade-all for removal off the floors. This removal work will require the area on the ground to be cordoned off to keep all other personnel away from the potential fall zone during these removal activities from the above floors. Upon completion of the removal of the windows the materials will be salvaged or recycled to an offsite facility TBD

5.2 STRUCTURAL DEMOLITION OF SELECT BAYS

The structures to be demolished on this project are part of a 4 story steel frame commercial building with exterior walls being constructed with insulated metal cladding and aluminum framed windows. The building has a concrete slab at grade and concrete foundations. The second floor thru roof is constructed of light weight concrete and metal pan deck attached to the steel building frame. Bay separation from the structure to remain must be completed prior to demolition of the structural members of the bays to be demolished, this activity and method of work will minimize the possibility of the bay demolition affecting the remaining structure.

5.2.1 Slot Cutting Slabs and Roof

NDC will open slots 4-6 in width at the separation column lines in the building. The slots will be at column lines 2 & F these slots will first be sawcut at predetermined locations upon completion the slots will be opened with the use of Bobcats with an attached hydraulic breaker to break the light weight concrete and removal of material on floors 2thru 4 The roof level materials will be demolished and removed utilizing jack hammers or chippers and land labor to remove the material. After the concrete has been removed the metal pan will be cut out and removed utilizing cutting torches the width of the saw cut opening. A fire watch will accompany the burner throughout these activities to insure no possibility of a fire as a result of our work. At all openings created by our slot cutting of the slabs and roof will be protected with safety barricades due the fall hazard created by these openings.

5.2.2 Bay Separation Floors 2 thru 4 and Roof (Structural Separation)

After the completion of the slab and pan removal activities, utilizing cutting torches the connecting structural beams will be cut on the removal side of the column line at a 45 degree angle to allow the structural member to fall way from the structure to remain. This work will be performed in conjunction with our excavator gently lowering the beams down to the slab below. This work will be performed starting on the second floor moving up to next level and then the follow level above and the roof level last. The existing concrete material within each bay will break up and fall away from the pan deck during the lowering of the beams creating a much safer condition for the elevated concrete removal in the bays being removed. This method will be utilized for all bay separation work on this project.

5.2.3 Bay Demolition Floors 2 thru 4 and Roof

NDC will use a sequence of mechanical demolition techniques to ensure safe working conditions during the building demolition. Various excavators equipped with special attachments will be used to demolish the building in a controlled methodical manner. By using our high reach attachment, grapple, pulverizers, breakers, processors and shears; NDC is capable of cutting and breaking various building members as needed. This mechanical approach will allow for the bays to be demolished, sorted, stockpiled and ready for transportation, thus reducing the work force and worker exposure. The demolition of the existing bays on the east side of the building are within 25 from the existing live power lines during this activity a spotter will be utilized throughout the duration of this work to insure impacting the power lines does not occur. In addition to the above water misting will be utilized throughout this activity to control the dust emissions from our work.

The method involved in this approach involves the demolition from the top to bottom using excavators equipped with special attachments. This top to bottom demolition technique is performed on a bay to bay approach. This technique is typically used on steel frame buildings, where the project requires a controlled demolition process. The various above grade structural building components will be broken, sized, stockpiled, loaded and transported for disposal. All debris generated during the demolition will be transported to the appropriate landfill or recycling facility. NDC intends on recycling, salvage or re-use of as much of the material as practical.

5.2.4 Bay Demolition Slab and Foundations

The concrete slab and foundations associated with the bays being removed will be demolished by heavy equipment (track mounted excavator) equipped with hydraulic breakers and pulverizers. The excavator will excavate around each below grade Structure to gain access. The concrete will be broken, sized, stockpiled, loaded and transported for disposal/recycling. Again, structural members will be removed in a controlled fashion, in a sequenced operation in sections or bays, and no uncontrolled collapse of major structures will be undertaken without a pre-approved process. Upon completion of the below grade removal work all excavation will be back filled with existing onsite to make all excavations safe upon our completion

5.3DEMOLITION OF CONCRETE SLAB O/G

After demolition of bays designated for removal, the removal of first floor concrete slab will commence. The slab will be broken in place by excavator with breaker attachment. This will fracture the slab and will greatly facilitate removal. The concrete will be lifted by excavators and loaders. Every reasonable effort will be made to minimize the amount of below grade soil disturbed. The building walls of the remaining building will be protected in place no demolition of perimeter walls will occur in the activity

5.4SALVAGE OF MECHANICAL ROOM LOUVERS

Concurrently with slot cutting activities Louver Salvage will take place. This activity will be performed by utilizing a man lift at the exterior and the interior can be accessed from the existing catwalk adjacent to the louvers. The louvers will be disassembled with hand tools. The elevated sections of these louvers will be rigged and lowered to grade utilizing our grade all. The area around the louvers will be cordoned off to keep all personnel away from the fall hazard area during these activities

5.5SELECTIVE SLAB REMOVAL UPPER FLOORS

5.5.1Elevated Slab Removal

There are numerous locations on floors 2, 3, 4 and roof that require selective slab removal. This work will star off by confirming the layout dimensions with the client once the areas are confirmed to be correct the slab areas will be sawcut and utilizing a bobcat with a hydraulic breaker the concrete will be broken andremoved and sent to a recycling facility. Upon completion of each select area a perimeter safety barrier will be installed to make safe the fall hazard these openings create.

6.0SITE DEMOLITION

6.1Landscape and Paving Removal

NDC with the use of excavators loaders and bobcats will remove all designated landscaping and paving on the site additionally a water truck will also be utilized for dust control throughout these activities.