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900003OAll CON-12 <br /> Pesticide application equipment is currently washed offsite at the <br /> application site. After use, the pesticide application tanks are filled in <br /> the field with water and a neutralizing agent is added to the water. The <br /> solution is flushed and the equipment is then returned to the facility. <br /> Empty pesticide containers are disposed of by the customers. In the past, <br /> pesticide application equipment was reportedly rinsed on the west side of <br /> the present fertilizer rinsing pad. A pesticide rinsewater tank was <br /> reportedly present to collect the rinsewater. <br /> Two "dry wells" (sumps) were installed at the site at some time in the <br /> past. The dry wells were located in the vicinity of the cooling towers <br /> near the fertilizer tank farm, but could not be located during the site <br /> inspection. The wells were used to drain runoff in this area, thereby <br /> maintaining the level of standing water below the bottoms of tanks and <br /> other equipment. The depth and construction details of the wells were not <br /> known by WFS personnel interviewed as part of this investigation, but they <br /> are thought to have been completed to a depth of less than 20 feet below <br /> grade. According to Mr. Jim Spink, the previous site manager for the <br /> facility could probably determine the location of the wells. <br /> A number of pieces of equipment are stored along the western boundary <br /> of the site. Some of the equipment is awaiting disposal . Other equipment <br /> is stored in this area until needed. <br /> The West Stanislaus Irrigation District Canal is located approximately <br /> 15 feet to the east of the site, and flows northwards. Most of the water <br /> in the canal comes from the San Joaquin River, about 3 miles away. Water <br /> is pumped out of the canal for irrigation by farmers. The canal is <br /> concrete-lined. The District periodically dredges silt and clam shells out <br /> of the canal and deposits them along the canal banks. <br /> Prior to about 1980, cooling water for the Aqua Ammonia converter was <br /> taken from the canal and discharged to the stormwater collection pond after <br /> 2-5 <br />