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OF Tit, CITY OF RACY <br />Public Works Department <br />Telephone: (209) 836-4420 <br />520 Tracy Blvd. <br />IV, Fax: (209) 836-3529 <br />40 Tracy, CA 95376 <br />July 16, 1992 <br />Mr. Joseph Henao <br />California Regional Water <br />Quality Control Board <br />Central Valley Region <br />3443 Routier Road <br />Suite A <br />Sacramento, CA 95827 <br />SUBJECT: SEMIANNUAL SURFACE AND GROUNDWATER MONITORING <br />REPORTS <br />Dear Mr. Henao: <br />I am enclosing here the first semiannual monitoring reports <br />required of our sludge waste discharge permit for the 1991- <br />92 season. I am defining the beginning of each year's <br />application and monitoring cycle as being in July, when <br />reports are filed for the proceeding season. Previous <br />monitoring data was submitted with semiannual reports <br />submitted on January 21, 1992. <br />Monitoring of surface water, as you know, takes place where <br />return irrigation water enters the recycling ponds. If this <br />is not possible, samples are collected from where the ponds <br />discharge into the San Joaquin River Club's lakes. If there <br />is no water discharged at either location, then no <br />monitoring occurs. <br />There was no water at either location from February, 1992 <br />until April, 1992 and this is why no monitoring data was <br />collected. There was no water at either location on <br />November 11, 1991 and samples were collected from the <br />eastern most pond. This was the original intrepretation of <br />our waste monitoring requirements but was clarified by the <br />April sampling. <br />3 <br />As you can see, none of the Agricultural Water Quality Goals <br />were exceeded except for Total Dissolved Solids. These, <br />however, are naturally high in the groundwater, as evidenced <br />by the monitoring of DW #1, the domestic well. <br />