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0 Memorandum * CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD e CENTRAL VALLEY REGION 3201 S Street Sacramento, California 95816 Phone: 445-0270 TO: Antonia Vorster4V FROM: Dave Brent Senior Engineer Area Engineer DATE: 14 November 1986 SIGNATURE: . SUBJECT: MUSCO OLIVE PRODUCTS, TRACY I have completed my review of the Quality Assurance and Control Report for the subject site. My review process included reading the 0/0 report, the specifica- tions, the waste discharge requirements and applicable sections of Subchapter 15 to get an overall view of the requirements and how construction of the pond was to be implemented. I then read the QA/QC report to get an understanding of the testing, construction and inspection methods used. Next I used a checklist and did an item by item review. I completed my review by again reading the QA/QC report and then breaking down the items that were lacking into two categories: major and minor items of concern (attached) . I found that all testing and construction methods given in the D/O report and the specifications were not followed to the letter during actual construction. When this occurred, I investigated to make sure that the end result was the desired one and that the method used to obtain that result was acceptable and justified in the report. The remaining items of concern, as stated above, were categorized into major and minor items and summarized in the attached table. The major items are what I considered to be those items that would delay pond operation because of lack of structural integrity, questionable engineering judgement, or a ir- reversible loss of reliable background information. The minor items are those that are important and required by the Board's Order but, can be addressed while the impoundment is in operation. The major items were forwarded to Larry Test via phone conversations of 21 and 24 October. I told him these issues would hold up use of the pond. He completed an addendum to the QA/QC report addressing these areas of concern which I received on 28 October. The addendum responds satisfactorally to the major concerns, thus leaving only the minor issues to be dealt with. The minor items that require additional work are the long-term pond capacity and cleanout procedures. The pond balance was based on the evaporation rate of fresh water. The saline water contained in the impoundment will have an evaporation rate less than fresh water therefore pond capacity may be reached much sooner than predicted in the QA/QC report. Pond cleanout procedures such as drying, loading, hauling and inspection are mentioned in the report, but