Orange County – Southern Human Services Center Roof & HVAC Renovations Addenda OC-SHSC-HVAC-and-Roof-Replacement-Addendum-1-03-08-2021 OC-SHSC-HVAC-and-Roof-Replacement-Addendum-2 OC-SHSC-HVAC-and-Roof-Replacement-Addendum-3 OC-SHSC-HVAC-and-Roof-Replacement-Addendum-4 Drawings 2021072 SHSC ROOF-HVAC BID DRAWINGS-02152021 Specs 2021072 SHSC Roof-HVAC-Specifications 2-15-2021