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Ogden Soils"Treatment Facility Monitoring .2. 15 August 1991 <br /> NOTE: As of 1 July 1991, Articles 5 and 10(monitoring and definitions)of the Chapter 15 regulations have <br /> been extensively modified. Copies of these revised articles are enclosed. <br /> A proposal for a monitoring system and program which meets the new Article 5 <br /> requirements will be needed prior to the completion of tentative waste discharge <br /> requirements for your facility. Since all wells have apparently been equally impacted by <br /> TRPH and lead, it appears that no true background well exists at the facility. Your <br /> proposal for installation of such a well will be needed prior to adoption of a final <br /> monitoring and reporting program for the facility. In addition,the range in the number <br /> of carbon atoms in hydrocarbon molecules covered by the TPH and TRPH analytical <br /> procedures, as performed by your lab must be specified. <br /> Page 5 of your submittal is a map of the waste management unit, showing the location of <br /> monitoring wells. In future monitoring reports, please show the entire facility in such <br /> maps. <br /> Page 6 of your monitoring report is a map of the ground water gradient beneath Waste <br /> Pile A, and water level data for catlr a.�satnra r ". ^,_ nap is an <br /> altered copy-,;fa ', rr wY�a fiber---v;1990. The <br /> printed date ef+ si-:'37 C:u�` eZ, crossed out and a new date of 4/17/91 has been <br /> added. Is this simply resubmittal of last September's data, or does this represent new <br /> data taken in April of this year? <br /> The issues raised above must be addressed in your report of waste d-iscb#xZze prior to <br /> completion of your tentative waste discharge requirements by Regional Board•staff. If <br /> you have questions, please call me at (916)361-5724. <br /> Jon B. Marshack, D. Env. <br /> Senior Environmental Specialist <br /> Environmental/Technical Support Unit <br /> Land Discharge Section <br /> Enclosure <br /> cc: Martha Vasquez, California Integrated Waste Management Board <br /> Ed Padilla, San Joaquin County Environmental Health Services <br />