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Pg • <br /> August 25, 1989 <br /> Ms. Carol Oz <br /> San Joaquin County <br /> Public Health Services <br /> 1601 East Hazelton Avenue <br /> Stockton, California 95201 <br /> SUBJECT: TANK REMOVAL PROJECT -48 WILSON WAY, STOCK-TON, CA <br /> Dear tis. Oz: <br /> Pursuant to our telephone conversation, you requested clarification on the <br /> following issues: <br /> 1. treatment of piping, <br /> 2. completion of contractor questionnaire, <br /> 3. copy of contractor's license and worker's compensation <br /> insurance certificate, <br /> 4. fire permit number, <br /> �✓ 5. detailed description of tank purging technique, <br /> 6. soil sampling sheet, <br /> 7. detailed description of tank rinsing technique, and <br /> S. detailed description of soil sampling technique. <br /> Each of these issues are addressed individually below. <br /> 1. Treatment of Piping <br /> The piping connecting the tank to the pump and the vent piping will be <br /> disconnected from the tank and pump, triple rinsed with water and disposed <br /> of as scrap. The rinsate will be collected in 55 gallon drums and <br /> transported as hazardous waste to a facility that recycles petroleum- <br /> contaminated water. Soil samples will be collected from the soil below the <br /> pipe with one sample collected for every 20 linear feet of pipe trench. <br /> 2. Completion of Contractor's Questionnaire <br /> Attached is the completed Contractor's Questionnaire including copies of <br /> DECON's Contractor's License and Insurance Certificates. <br /> 3. Copy of Contractor's License and Worker's Compensation Insurance <br /> Certificate <br /> This information has been attached to the completed Contractor's <br /> Questionnaire. <br /> 26102 Eden Landing Road, Suite 4 Hayward,CA 94545 (415)732-6444 Fax (415)782-8584 CL#545726 <br />