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THOMAS M.GAU P.O.BOX 1810•1810 E.HAZELTON AVENUE <br /> DIRECTOR STOCKTON,CALIFORNIA 95201 <br /> (209)468-3000 FAX(209)468-2999 <br /> �CPci3i+A <br /> 4[N% <br /> www.sjgov.org/pubworks <br /> FRITZ BUCHMAN <br /> DEPUTY DIRECTOR 'w(ff�yng � YOU r llrw7 <br /> MICHAEL SELLING ��,YbJ " I "� 'v� f"s�+ .- <br /> DEPUTY DIRECTOR <br /> JIM STONE n' <br /> 201.E <br /> DEPUTY DIRECTOR "`'' <br /> ROGER JANES <br /> BUSINESS ADMINISTRATOR �`,h` �[ � �ALHEALTH <br /> PERNi,F S ERVIGE� <br /> April 22, 2013 <br /> Mr. Todd Del Frate <br /> California Regional Water Quality Control Board <br /> 11020 Sun Center Drive, #200 <br /> Rancho Cordova, California 95670-6114 <br /> SUBJECT: FIRST QUARTER 2013 GROUNDWATER MONITORING REPORT, <br /> CORRAL HOLLOW SANITARY LANDFILL <br /> Dear Mr. Del Frate: <br /> Enclosed please find the First Quarter 2013 Groundwater and Surface Water Monitoring <br /> • Report for the Corral Hollow Sanitary Landfill. Monitoring was performed in accordance with <br /> the monitoring program included with the Waste Discharge Requirements (WDRs) approved <br /> by the Regional Water Quality Control Board for this site. <br /> The results of this quarter's monitoring are consistent with previous quarters. Deep aquifer <br /> wells MW-6 and MW-7 remain without impact. Slight changes in some inorganic parameters <br /> at MW-6 were reported by Sanitas software. We will be interested to see the data from this <br /> well next quarter. <br /> No VOCs were reported at shallow aquifer wells SB-1 or MW-4, or at any deep aquifer well. <br /> We continue to see slight improvement in the inorganic parameters at MW-4 that we attribute <br /> to grading improvements in late 2003. This continuing improvement seems to indicate that <br /> the lack of closure cover over small portions of the refuse at the eastern edge of the landfill is <br /> not negatively impacting groundwater at this time. <br /> Progress of Corrective Action Measures is submitted during the first and third quarters, and is <br /> therefore included in this quarterly report. <br /> I certify under penalty of law that I have personally examined and am familiar with the <br /> information submitted in this document and all attachments and that, based on my inquiry of <br /> those individuals immediately responsible for obtaining the information, I believe that the <br /> information is true, accurate, and complete. I am aware that there are significant penalties <br /> for submitting false information, including the possibility of fine and imprisonment. <br />