A dual waterproofing membrane assembly system for a structure, comprising: (a) at least one soil retention system having a first face and a second face, and wherein said first face faces compacted earth or soil; (b) at least one bentonite sheet waterproofing membrane layer having a first face and a second face, and wherein at least a portion of said first face of said at least one bentonite sheet waterproofing membrane layer is secured to at least a portion of said second face of said at least one soil retention system , and said at least one bentonite sheet waterproofing membrane layer is composed of a layer of a first material; (c) at least one waterproof sheet membrane layer having a first face and a second face, said at least one waterproof sheet membrane layer is composed of a layer of a second material, and wherein said second face of said at least one waterproof sheet membrane layer has at least one layer of at least one adhesive ; wherein said first material is different than said second material, characterized in that at least a portion of said first face of said at least one waterproof sheet membrane layer is secured to at least a portion of said second face of said at least one bentonite sheet waterproofing membrane layer, so as to form said dual waterproofing membrane assembly system for a structure; wherein one of said at least one bentonite sheet waterproofing membrane , and said at least one waterproof sheet membrane layer extends along at least a portion of a vertical surface ; and wherein one of said at least one bentonite sheet waterproofing membrane , and said at least one waterproof sheet membrane layer extends along at least a portion of a horizontal surface . (a) at least one soil retention system having a first face and a second face, and wherein said first face faces compacted earth or soil; (b) at least one bentonite sheet waterproofing membrane layer having a first face and a second face, and wherein at least a portion of said first face of said at least one bentonite sheet waterproofing membrane layer is secured to at least a portion of said second face of said at least one soil retention system , and said at least one bentonite sheet waterproofing membrane layer is composed of a layer of a first material; (c) at least one waterproof sheet membrane layer having a first face and a second face, said at least one waterproof sheet membrane layer is composed of a layer of a second material, and wherein said second face of said at least one waterproof sheet membrane layer has at least one layer of at least one adhesive ; wherein said first material is different than said second material, characterized in that at least a portion of said first face of said at least one waterproof sheet membrane layer is secured to at least a portion of said second face of said at least one bentonite sheet waterproofing membrane layer, so as to form said dual waterproofing membrane assembly system for a structure; wherein one of said at least one bentonite sheet waterproofing membrane , and said at least one waterproof sheet membrane layer extends along at least a portion of a vertical surface ; and wherein one of said at least one bentonite sheet waterproofing membrane , and said at least one waterproof sheet membrane layer extends along at least a portion of a horizontal surface . <EOS>