1. Roof Replacements and Associated Tuckpointing at SWRP & LASMA Contract #11-961-21 4/12/20131

2. Roof Replacements and Associated Tuckpointing at SWRP & LASMA Project Buildings/Locations (10 Projects to be Completed over a Two Year Period) 2013 Projects: – Building #50, Aeration Battery C – Stickney WRP (SWRP) General Scope – Roof Replacement and Miscellaneous Concrete Repairs – Building #9015, Visitor Center - Lawndale Avenue Solids Management Area (LASMA) General Scope – Roof Replacement 4/12/20132

3. Roof Replacements and Associated Tuckpointing at SWRP & LASMA Project Buildings/Locations (10 Projects to be Completed over a Two Year Period) 2014 Projects: – Building #180, 52 nd Avenue Gate House - SWRP General Scope – Roof Replacement and Associated Tuckpointing/Sealing of Parapet Wall Limestone Coping Caps – Building #170, Main Foyer of West Side Pumping Station – SWRP General Scope – Roof Replacement – Building #21, Ejector Station D-1 – SWRP General Scope – Roof Replacement – Building #150, Imhoff Battery B, West Valve House – SWRP General Scope – Roof Replacement 4/12/20133

4. Roof Replacements and Associated Tuckpointing at SWRP & LASMA Project Buildings/Locations (10 Projects to be Completed over a Two Year Period) 2014 Projects (Cont): – Building #152, Imhoff Battery B, East Valve House - SWRP General Scope – Roof Replacement – Building #60, Effluent Disinfection Storage Building – SWRP General Scope – Roof Replacement and Associated Tuckpointing – Building #87, Scum Concentration – SWRP General Scope – Roof Replacement and Associated Tuckpointing – Building #9027, Racine Avenue Pumping Station (RAPS) General Scope – Roof Replacement and Associated Tuckpointing 4/12/20134

5. Building #50, Aeration Battery C - SWRP Bldg #50 Aerated Tanks Final Settling Tanks Note: The Contractor is responsible for preventing any demolition debris, construction material, tools, equipment, etc. from entering into the tanks. 4/12/20135

6. Building #50, Aeration Battery C - SWRP New System: Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with River Washed Aggregate Estimated 175 Squares 4/12/20136

7. Building #9015, Visitor Center - LASMA 4/12/20137

8. Building #9015, Visitor Center - LASMA New System: Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with a White, Reflective Energy Star rated Aggregate Surface Estimated 108.5 Squares Facing NE Facing SW 4/12/20138

9. Building #180, 52 nd Ave. Gate House - SWRP 4/12/20139

10. Building #180, 52 nd Ave. Gate House - SWRP New System: Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with River Washed Aggregate Estimated 1.5 Squares 4/12/201310

11. Building #170, Main Foyer West Side Pumping Station - SWRP Project Area New System: Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with River Washed Aggregate Estimated 1 Square 4/12/201311

12. Building #170, Main Foyer West Side Pumping Station - SWRP 4/12/201312

13. Building #21, Ejector Station D-1 - SWRP New System: Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with River Washed Aggregate Estimated 1.5 Squares 4/12/201313

14. Building #21, Ejector Station D-1 - SWRP 4/12/201314

15. Building #150, Imhoff Battery B West Valve House - SWRP 4/12/201315

16. Building #150, Imhoff Battery B West Valve House - SWRP New System: Three (3) Ply Temporary Roofing System with River Washed Aggregate Estimated 19 Squares 4/12/201316

17. Building 152, Imhoff Battery B East Valve House - SWRP 4/12/201317

18. Building 152, Imhoff Battery B East Valve House - SWRP New System: Three (3) Ply Temporary Roofing System with River Washed Aggregate Estimated 19 Squares 4/12/201318

19. Building #60, Effluent Disinfection Storage Bldg. - SWRP 4/12/201319

20. Building #60, Effluent Disinfection Storage Bldg. -SWRP New System: Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with River Washed Aggregate Estimated 6 Squares 4/12/201320

21. Building #87, Scum Concentration - SWRP 4/12/201321

22. Building #87, Scum Concentration - SWRP New System: Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with River Washed Aggregate Estimated 43 Squares 4/12/201322 Lower RoofUpper Roof

23. Building #87, Scum Concentration - SWRP 4/12/201323

24. Building #9027, Racine Avenue Pumping Station Total Square Footage is Estimated at 330 Squares 4/12/201324 Northern Roof Penthouse Coarse Screen Addition

25. Building #9027, Racine Avenue Pumping Station New System: Northern Half of Bldg. will receive the Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with a White, Reflective Energy Star rated Aggregate Surface 4/12/201325

26. Building #9027, Racine Avenue Pumping Station New System: The Penthouse will receive the Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with a White, Reflective Energy Star rated Aggregate Surface 4/12/201326

27. Building #9027, Racine Avenue Pumping Station New System: The Coarse Screen Addition will receive the Cold Applied Three (3) Ply SBS Modified Built-Up Asphalt Roofing System with an Extensive Vegetative Roofing System incorporated on Top of the Overall Roofing Structure 4/12/201327

28. Roof Replacements and Associated Tuckpointing at SWRP & LASMA Contract #11-961-21 Note: The Metropolitan Water Reclamation District will not be responsible for any errors, omissions, or absence of any details within this presentation. The Contractor is responsible for thoroughly reviewing the entire contract package. The Contractor shall verify all dimensions, locations of work, conditions and other information specified herein, and be responsible for field verifying all the work required, and for the accuracy of all such information related to the work.