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w 'INSf?ECTION.REPORT <br /> CENTRAL VALLEY REGIONAL WATER QUALITY CONTROL BOARD <br /> REPORT DATE: 25 August 2014 <br /> DISCHARGER: Musco Family Olive Company and Studley Company <br /> WDID NUMBER(S): 513392059001 (WDR) <br /> FACILITY NAME: Musco Olive Company Tracy Plant <br /> FACILITY LOCATION & COUNTY: 17950 Via Nicolo, Tracy, CA San Joaquin County <br /> CONTACT(S): Dennis Leikem, Environmental Manager, Musco Family Olive Company (209) 229-7055 <br /> INSPECTION DATE: 12 August 2014 <br /> INSPECTED BY: Vinoo Jain, P.E. WRCE, Title 27 Permitting and Mining <br /> ACCOMPANIED BY: Todd Del Frate, Central Valley RWQCB Compliance and Enforcement Unit; <br /> Andrew Romolo (CQA Officer) and Jeff Raines, both with Terraphase Engineering <br /> OBSERVATIONS AND COMMENTS: <br /> The purpose of the inspection was to observe construction of the pan lysimeter that will be used to monitor the <br /> unsaturated zone beneath Pond C. Photographs 1 through 11 are attached to this inspection report <br /> (Attachment 3). Photos 1 through 6 were taken by staff, and Photos 7 through 11 were provided by the CQA <br /> Officer Andrew Romolo to staff by email on 18 August 2014. <br /> 1. Background: <br /> The Discharger is currently constructing two new Class II surface impoundments (Pond C and Pond D) as <br /> replacement storage and evaporative capacity for Pond A which is being taken out of service due to a failed <br /> leachate collection and removal system (LCRS). In previously constructed Pond A and Pond B, the <br /> unsaturated zone beneath the ponds was monitored using numerous suction lysimeters which historically have <br /> been plagued with maintenance issues. Ponds C and D currently being constructed were designed with a pan <br /> lysimeter located directly below the LCRS sump which monitors any leakage from the secondary containment <br /> system below the LRCS sump to the unsaturated zone. Since there is only one pan lysimeter per pond it is <br /> absolutely critical that the pan lysimeter is constructed properly to provide earliest detection of a release from <br /> the surface impoundments. Attachment 1 provides a location map with Pond C Pan Lysimeter (PL-C) <br /> identified, and Attachment 2 provides the detail of the pan lysimeter construction. <br /> 2. Site Inspection: <br /> Board Staff arrived at the facility around 9:30 AM. We were escorted to the site where Pond C and D are <br /> currently under construction. At the time we arrived the contractors were in the process of excavating the <br /> profile of the pan lysimeter (see Photo#1). It was estimated that it would take the contractor another hour or so <br /> to finish the excavation process. Since Mr. Todd Del Frate, Board staff in the Compliance and Enforcement <br /> (C&E) Unit had other sites to inspect it was decided that we would return after lunch to observe installation of <br /> the pan lysimeter liner. Therefore, we left the facility around 10:45 AM to visit two other (C&E) sites. We <br /> returned to the facility around 12:30 PM and discovered that the pan lysimeter liner had already been installed <br /> with all the seams welded (See Photos#243). The Discharger`installed a rub sheet under the pan lysimeter <br /> sampling point (see Photo#2) to prevent any long term damage of the pan lysimeter liner. The rub sheet is not <br /> shown on the final plans and is a welcomed added feature that should be noted in the as-built drawings. <br /> Approved: Inspection ID# 17334552 WDID# 513392059001 <br />