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3) City of Manteca Pubic Works Department <br /> Contact: Mr. Jim Podesta, Engineer Phone: (209)239-8460 <br /> According to Mr. Podesta, the soil in the city is generally silty sand and weII- <br /> drained. Groundwater is approximately 20-30 feet bgs and flows towards the <br /> northwest. In the city of Manteca, pavement=requirements include a 4-inch <br /> asphalt/concrete cover and 6-inch aggregate base on most developed lots. The <br /> -proposed ARCO site address'is 108 Industrial Park Drive and currently contains <br /> a commercial/industrial complex. <br /> 4) San Joaquin County Department of Environmental Health <br /> Contact: Ms. Mary O'Sullivan Phone: (209)468-3420 <br /> Ms. O'Sullivan found that there are no records of contamination at 108 Industrial <br /> Park Drive. There are records of groundwater contamination for 220, 400, 555, <br /> 575, and 950 Industrial Park Road and 1153 Vanderbilt Circle. A Public Records <br /> Release Application was faxed to the County on August 20, 1996. Ms. O'Sullivan <br /> later notified SECOR by telephone that there were no records on file with the <br /> County for the proposed ARCO property. <br /> 5) City of Manteca Water Department <br /> Contact: Ms. Diane (declined to give last name), Engineer <br /> Phone: (209)239-8432 <br /> Ms. Diane reviewed City groundwater contour maps and found that the depth to <br /> groundwater is approximately 25 feet bgs within the site vicinity. Local <br /> groundwater is pumped from approximately 100 to 800 feet bgs,withdrawing water <br /> from the Victor and Laguna Formations. Ms. Diane did not know of any <br /> groundwater contamination plumes within the subject site's vicinity, however, she <br /> referred SECOR to the San Joaquin County Health Services Department. <br /> 3.3 AERIAL PHOTOGRAPH REVIEW <br /> On August 28, 1996, aerial photographs of the site were reviewed at Pacific Aerial Surveys, <br /> in Oakland, California. A summary of our aerial photography observations is listed below. <br /> It is to be noted that the subject ARCO property,is located on the southeast corner of South <br /> Main Street and Industrial Park Drive, in the City of Ma.nteca, California, see Figure 3. <br /> Figure 1, the Site Location Map, shows the roadways and is a USGS Topographic map <br /> dated 1987. <br /> Photo: AV 4347 0210 5&6 <br /> f Date: 8-13-92 <br /> L Scale: I"=2000' <br /> JN 40067-047-01 <br /> dec-96\arcmten.eca 3-3 <br /> r <br /> ;i <br /> S <br />