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• MEMORANDUM 10 <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD - CENTRAL VALLEY REGION <br /> 3443 Routier Road, Suite A Phone: (916) 361-5600 <br /> Sacramento, CA 95827-3098 ATSS Phone: 8-495-5600 <br /> TO: Antonia K. J. Vorster v FROM: John J. Tomko �� �� <br /> Senior Engineer Associate Engi n <br /> EU <br /> San Joaquin Regulatory J U L 1 6 1990 <br /> ENVIRONMENTAL HEALTH <br /> PERMIT/SERVICES <br /> DATE: 25 June 1990 SIGNATURE: <br /> SUBJECT: MARLEY COOLING TOWER COMPANY'S MONITORING REPORTS <br /> I've reviewed the last four monitoring reports for the Marley Cooling Tower Company's <br /> (MCTC) discharge into the Diverting Canal (January through April 1990) . In addition, <br /> I've reviewed MCTC's letter dated 4 June 1990 which addresses, the NPDES permit <br /> violations during these three months. A summary of the NPDES violations during the <br /> first quarter of 1990 is tabulated below: <br /> ----------------------------------------------------------------- <br /> VIOLATIONS JAN FEB MAR APR AVERAGE <br /> ----------------------------------------------------------------- <br /> ----------------------------------------------------------------- <br /> LATE SUBMITTAL 60 54 33 33 45.0 <br /> (DAYS LATE) <br /> ----------------------------------------------------------------- <br /> DAYS IN VIOLATION 5 10 15 3 8.3 <br /> OF TOTAL CHROMIUM <br /> LIMIT OF 50 PPB. <br /> ----------------------------------------------------------------- <br /> DAYS IN VIOLATION 14 16 17 14 15.3 <br /> OF TDS LIMIT OF <br /> 500 MG/L. <br /> ----------------------------------------------------------------- <br /> DAYS IN VIOLATION 11 14 14 3 10.5 <br /> OF COPPER. LIMIT <br /> OF 6.5 PPB. <br /> ----------------------------------------------------------------- <br /> DAYS SAMPLED 19 18 17 14 17.0 <br /> ----------------------------------------------------------------- <br /> ----------------------------------------------------------------- <br /> The Discharger in his January monitoring report cover letter notified us that they had <br /> experienced some violations and that possible causes had been explored. However, there <br /> was no similar notification for the February, March, and April violations. At a 1 May <br /> 1990 Remedial Action Plan status meeting, Mr. Gary Reents discussed these permit <br /> violations with MCTC officials, and informed them that he would be sending a permit <br /> violation letter in the near future. On 4 June 1990, we received from MCTC a letter <br /> addressing these violations. <br /> The 4 June 1990 letter discussed two major problems with the monitoring program; the <br /> long laboratory turn-around times, and the condition of the ion exchange resin. MCTC's <br /> current laboratory contract is with Roy F. Weston, Inc. , and their standard turn-around <br />