HAZARDOUS SUBSTANCES. MOLD AND UNSAFE WORKNG CONDITIONS 5.1 Customer has not observed or received notice from any source (formal or 'Memel) of (a) Hazardous Substancesor Mold. either airborneor on or within the walls. Doom ceibigs, heating. vemlaten and at oondboring systems. plumbing systems. strudwe, andotter components