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II. GENERAL INFORMATION: Obtain an EPA Site Number from the Department of Toxic Substances Control (800) 61 -TOXIC for temporary hazardous waste removal activities associated with underground storage tank (UST) removals. 2. Disposal Information: Public Health Services Underground Storage Tank Disposition Tracking Record (UST Tracking Record, page 10) shall accompany each tank removed from site. Tank(s) will be issued an identification number which PHS-EHD's representative will note on the UST Tracking Record. Contractor will affix same identification number onto tank end using fluorescent spray paint. Contaminated tanks and/or piping are to be transported under Hazardous Waste Manifest by a state registered hazardous waste hauler. Contractor to Provide: Combustible/Flammable gas detector (to verify the Lower Explosive Limit (LEL) atmosphere and oxygen level of tank prior to lifting from excavation), adequate number(s) and appropriate type(s) of fire extinguisher(s), barriers to secure the area as necessary to minimize traffic and pedestrian interference, and fluorescent spray paint to affix tank identification numbers. It shall be the project manager's responsibility for compliance with all health & safety regulations and requirements, which shall be strictly adhered to at all times during the course of the closure activities. 4 The PHS-EHD permit shall be on site during tank excavation and removal. Any changes in this document shall be approved by PHS-EHD prior to initiating work. Closure -in -Place: If Closure -in -Place is the suggested method of abandonment, complete form EH 23 039 and submit written approval from the local Fire Department. 7. Temporary CIosure: If Temporary Closure is the suggested method of abandonment, complete and submit this form and a written approval from the local Fire Department. 8. The following documentation shall be submitted within 30 days of the tank removal date: a) Analytical results, mailed directly from laboratory to PHS-EHD, including a chain of custody and quality assurance and quality control (QA & QC). b) UST Tracking Record Sheet(s) and/or Tank Hazardous Waste Manifest(s). c) Hazardous Waste Manifests for piping, rinsate, residual fuel, or waste oil receipt. d) Submit the backfill excavation certificate as required by San Joaquin County and the incorporated City Building Departments. This report will be referred to the appropriate agency for their review. A site which has had UST(s) removed, shall not be considered for final closure until the above items are submitted for review. III. SITE MITIGATION: 1. In the event contamination is observed, confirmed or suspected as a result of a leaking UST system it is the responsibility of the owner or operator to submit a workplan to PHS-EHD Site Mitigation Unit prior to initiating any assessment or remediation activities. To "minimise delays, a Corrective Action Plan may be submitted concurrent with tank closure or installation plans. Address one copy of the Corrective Action Plan to the Site Mitigation Unit for review. For further assistance contact the Site Mitigation Unit at (209) 468-3450. EH 23 046 (Revised 10/24/97) Page 2