Permits & Development - Encroachment(EP)/Driveway(DW) Permits - 2007_EP-07-301 thru EP-07-400_ - EP-07-352

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A. For cleaning and painting structural steel in the field, certification in conformance with the requirements in Qualification Procedure No. 1, "Standard Procedure For Evaluating Painting Contractors (Field Application to Complex Industrial Structures)"(SSPC-QP 1). B. For removing paint from structural steel, certification in conformance with the requirements in Qualification Procedure No.2, "Standard Procedure For Evaluating Painting Contractors (Field Removal of Hazardous Coatings from Complex Structures)"(SSPC-QP 2). C. For cleaning and painting structural steel in a permanent painting facility, certification in conformance with the requirements in Qualification Procedure No.3, "Standard Procedure For Evaluating Qualifications of Shop Painting Applicators" (SSPC-QP 3). The AISC's Sophisticated Paint Endorsement(SPE)quality program will be considered equivalent to SSPC-QP 3. The third paragraph of Section 59-2.03,"Blast Cleaning,"of the Standard Specifications is amended to read: • Exposed steel or other metal surfaces to be blast cleaned shall be cleaned in conformance with the requirements in Surface Preparation Specification No.6, "Commercial Blast Cleaning," of the "SSPC: The Society for Protective Coatings." Blast cleaning shall leave all surfaces with a dense, uniform, angular anchor pattern of not less than 35 µm as measured in conformance with the requirements in ASTM Designation: D 4417. The first paragraph of Section 59-2.06,"Hand Cleaning,"of the Standard Specifications is amended to read: • Dirt, loose rust and mill scale,or paint which is not firmly bonded to the surfaces shall be removed in conformance with the requirements in Surface Preparation Specification No. 2, "Hand Tool Cleaning," of the "SSPC: The Society for Protective Coatings." Edges of old remaining paint shall be feathered. The third and fourth paragraphs of Section 59-2.12, "Painting,"of the Standard Specifications are amended to read: • Contact surfaces of stiffeners, railings,built up members or open seam exceeding 6 mils in width that would retain moisture, shall be caulked with polysulfide or polyurethane sealing compound conforming to the requirements in ASTM Designation: C 920,Type S,Grade NS,Class 25,Use O,or other approved material. • The dry film thickness of the paint will be measured in place with a calibrated Type 2 magnetic film thickness gage in conformance with the requirements in SSPC-PA 2, "Measurement of Dry Coating Thickness with Magnetic Gages,"of the "SSPC: The Society for Protective Coatings," except that there shall be no limit to the number or location of spot measurements to verify compliance with specified thickness requirements. SECTION 64:PLASTIC PIPE Issue Date: January 5,2007 The first paragraph of Section 64-1.06, "Concrete Backfill,"of the Standard Specifications is amended to read: • At locations where pipe is to be backfilled with concrete as shown on the plans, the concrete backfill shall be constructed of minor concrete or Class 4 concrete conforming to the provisions in Section 90, "Portland Cement Concrete." Minor concrete shall contain not less than 250 kg of cementitious material per cubic meter. The concrete to be used will be designated in the contract item or shown on the plans. SECTION 65:REINFORCED CONCRETE PIPE Issue Date: January 5,2007 The first paragraph of Section 6.5-1.02,"Materials,"of the Standard Specifications is amended to read: Cementitious material and aggregate shall conform to the provisions in Section 90-2, "Materials," except that mortar strengths relative to Ottawa sand and grading requirements shall not apply to the aggregate. Use of supplemental cementitious material shall conform to AASHTO Designation: M 170M. Subparagraph "c" of the eleventh paragraph of Section 65-1.02A(1) "Circular Reinforced Concrete Pipe (Designated or Selected by Class),"of the Standard Specifications is amended to read: Contract No. 10-OM7104 49