6.0 INSPECTION LEVELS FOR CONTRACTOR SUPPLIED MATERIAL6.1Material Inspection Levels shall be assigned on Contractors supplied materials and equipment to specify the minimum amount of inspection coverage deemed necessary by YERP to ensure that a product or service conforms to specifications at a specific supplier’s and/or sub-supplier’s factory or fabrication site.The following system of coding Contractor inspections shall be used to define the inspection requirements.Level 0: Documentation requirements only; no vendor inspection required.Level 1: Only final inspection is required prior to shipping.Level 2: Includes, as a minimum, pre-inspection meetings, one or more unspecified “in progress” surveillance visit/s, all witness and hold points, final inspection, and release for shipment.Level 3: Same as Level 2, except that “in progress” surveillance inspections shall be on a regular basis (daily, weekly, or bi-weekly)Level 4: Resident inspector continually monitoring the work