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ILI <br /> i <br /> DSS Company <br /> 2G48 W.8lewe4t Rd <br /> f Tracy,CA.95376 <br /> (209 630-5130 <br /> E <br /> M � , <br /> A Subsidiary of Knife River Corporation <br /> January 20, 2003 F E B 2'1 2003 <br /> ENVIRONMENT HEALTH <br /> ' California Regional Water Quality Control Board PERMIT/SERVICES <br /> Central Valley Region <br /> 3443 Routler Road, Suite A <br /> Sacramento, CA 95827-3003 <br /> I Re: Quarterly Pond and Effluent Monitoring Report <br /> DDS COMPANY <br /> Vernalis Quarry <br /> San Joaquin County <br /> Order No. 99-034 <br /> POND MONITORING <br /> Freeboard 9130/02 5' <br /> 10/31/02 5' <br /> 11/30/02 old pond 5' <br /> new pond 110' <br /> 3 <br /> 12/30/02 old pond 5' <br /> new pond 108` <br /> Ponds performing as designed. The old pond has reached the end of its useful life. On 11/14/02 <br /> the pumps were removed from the old pond and moved to the new pond. At this time all storm <br /> water is now directed to the new pond and this pond is now used for plant water. Freeboard on <br /> this pond at this time is in excess of 100'. <br /> EFFLUENT MONITORING <br /> On 12/17/02 a sample was collected by Keven Quigley an employee of J L ANALYTICAL <br /> SERVICES, Inc at 2:30 PM for analysis. <br /> Results of analysis <br /> Dissolved Oxygen, SM 4500-0, G 1 i mg/I <br /> pH, SM 4500 HB 8.4 pH Units <br /> Specific Conductivity @ 25 C, SM 2510E 660 umhofcm" <br /> { <br /> AT25 DEGREES C <br /> { <br />