Safe Asbestos Encasement for William Penn High School Renovation Project

1. Andrew J. Hickey Construction Management Option

2. William Penn High School • Location: New Castle, DE • Total Building Size: 2 Floors, 556,200 sq ft • Project Cost: • Phase I - $6,330,272 • Phase II - $2,766,58 • Phase III - $3,874,341 • Construction Dates: • Phase I – June ’02-August ’02 • Phase II – June ’03-August ’03 • Phase III – June ’04-August ’04

3. Project History • Built in 1958 • Addition built onto the school in 1973 which doubled the size • Currently the largest high school in Delaware

4. Project Team • Owner – Colonial School District • Architect – Tetra Tech, Inc. • MEP Engineers – Furlow Associates • General Contractor – Ernest DiSabatino & Sons • Mechanical Contractor – I.D. Griffith • Electrical Contractor – Creedon Controls

5. Topics of Discussion • Asbestos Abatement Alternatives • Schedule Acceleration & Site Layout • Temporary Lighting Design

6. Project Goals • To convince the parents and administration of the Colonial School District of the safety and practicality of asbestos encasement • To save the school district money by accelerating the project schedule by three months

7. Asbestos Abatement Alternatives • Currently Performing Asbestos Removal • Total Cost = $903,949 • Possible Alternatives • Asbestos Encasement • Area Closeoff

8. Description of Asbestos • Microscopic Bundles of Fibers • Friable vs Non-Friable • Possible diseases stemming from Asbestos: • Emphazema • Ensephalitis

9. Description of Asbestos • Asbestos is found in: • Floor and ceiling tile • Insulation • Fireproofing • Cement • Asbestos does not become a hazard until the materials are disturbed or damaged

10. Asbestos Locations – 1st Floor

11. Asbestos Locations – 2nd Floor

12. Asbestos Removal • Complete removal & replacement of asbestos containing materials • Area must be sealed off in an airtight enclosure until all asbestos containing materials are removed and the air quality is found to be suitable for occupation

13. Asbestos Removal

14. Asbestos Encasement • Description: • A plastic resin which covers the asbestos containing materials • Total Cost for Asbestos Encasement: • $229,400 • Sealant does not last forever • Global Encasement offers a 20 year warranty • Encasement costs will equal removal in 100 years • Schedule for Asbestos Encasement: • Takes 1/3 of the time required for Removal

15. Asbestos Encasement Costs

16. Comparison between Methods • Safety: • Removal is thought as safest method • New Jersey DHSS found that after removal, airborne asbestos levels remain at the level before removal and in some cases are elevated by as much as 45% • The EPA has recently included asbestos encasement as an acceptable asbestos abatement method • Encasement does not release fibers into the air

17. Comparison between Methods • Schedule • Removal - Fourteen Weeks • Other contractors cannot work in the same area • Encasement – Six Weeks • Other contractors can work in the same area

18. Benefits of Asbestos Encasement • Decreased risk of Adverse health effects • A 75% lower initial cost of $229,400 • Added protection for the finish of floors • No adverse environmental impact

19. Schedule Acceleration & Site Layout • Current Schedule: • Phase I – June ’02-August ’02 • Phase II – June ’03-August ’03 • Phase III – June ’04-August ’04 • Reduced Schedule • Phase I – June ’02-August ’02 • Phase II – June ’03-August ‘03

20. Reasons for Schedule Acceleration • Reduced cost due to less general conditions • Project bid out as two-shift, six day a week • Daily work logs show that only mechanical & electrical contractors worked both shifts • Accelerated schedule will force all contractors to work both shifts

21. 1st Floor Work Flow Plan

22. 2nd Floor Work Flow Plan

23. Comparison Between Schedules

24. Downfalls of Two-Shift Six Day Work • Studies have shown marked decreases in output by contractors working overtime for several weeks. • Production efficiency for contractors working 8 hour workdays six days a week decreases from 100% to 90%. • 2nd shift must take time to find out what work the 1st shift completed • Superintendents are essential to two-shift work

25. 1st Phase Site Plan

26. 2nd Phase Site Plan

27. Temporary Lighting Design • Two-Shift Work • Half of the contractors will be working at night • Temp lighting needed to provide a safe and productive work environment • Renovation • Walls already in place • Calculations need to be provided for each room

28. Lighting Take-Off • Materials: • 60 Total 20A Circuit Breakers • 571 200W Lamps X 2 (Original + 1 Change) • 571 Total Lamp Guards • 571 Total Pig Tail Sockets • 12,000’ Total Romex • 1,142 Total Wire Connectors • Total Cost Materials & Labor: • $71,937 • Total Cost Power for Temp Lighting: • $7,171

29. 1st Floor Temporary Lighting Plan

30. 2nd Floor Temporary Lighting Plan

31. Conclusions / Recommendations • Accelerate the project schedule by three months and perform asbestos encasement • Provides a safer environment for the faculty and students • Saves the district $848,235 over the original schedule • All contractors will be off of school grounds in only six months

32. Credits / Acknowledgements

33. Thank you