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(209) 468-3062 <br />-----Original Message ----- <br />From: Robert Ditto[mailto:RDitto@waterboards.ca.gov] <br />Sent: Wednesday, February 25, 2009 11:00 AM <br />To: Chang Cao <br />Subject: Re: 3B Trucking <br />Chang, <br />After discussions this seems to be a rather difficult scenario. If I understand it <br />correctly, storm water has come into contact with their waste water. Once storm water <br />comes into contact with waste water it becomes waste water that requires and NPDES permit <br />to discharge. Since this is a rather some piece of the program I am not sure who would <br />have time to take it on. Although, I have forwarded the info to our NPDES permit and will <br />follow up with you with any additional information. <br />After further review of the low threat discharge permit, they would not qualify. <br />It appears the company has put baker tanks onsite to collect the ponded water and plan to <br />treat then discharge to an irrigation ditch? If this <br />is correct, how do they plan to treat the water? (sand filter) Will <br />they sample the water before discharge to surface waters? <br />As far as the waste water entering the wells, I am still working on that. <br />Please clarify that my information is correct with what is going on with the site. <br />Thanks <br />Bob <br />Robert Ditto, CPESC, CPSWQ <br />Environmental Scientist <br />Regional Water Quality Control Board <br />Storm Water and Water Quality Certification Unit 11020 Sun Center Drive, #200 Rancho <br />Cordova, CA 95670-6114 rditto@waterboards.ca.gov <br />916.464.4841 (office) 916.4.64.4782 (fax) <br />>>> Chang Cao <CCao@sjgov.org> 2/25/2009 10:45 AM >>> <br />Good Morning Bob, <br />Attached is a letter that was sent out by County Environmental Health Department in <br />response to the flood last week. As I recall, you will discuss the need for a low -threat <br />discharge permit with your team. Have your team came to a conclusion on this? <br />Thank you for your time and consideration. Please feel free to contact me, if you have <br />any questions or comments. <br />Chang Cao, P.E. <br />Associate Civil Engineer <br />1810 E. Hazelton Avenue <br />Stockton, CA 95205 <br />(209) 468-3062 <br />2 <br />