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Advanced GeoEnvironmental, Inc. 01 July 2003 AGE-NC Project No. 03-1015 o Mr. Michael Infurna w , SAN JOAQUIN COUNTY ENVIRONMENTAL HEALTH DEPARTMENT G 1Cc 304 East Weber Avenue, Third floor LO Stockton, California 95202 Subject: Limited Site Assessment Report (Septic Tank Area) Machado Property o 1 20333 South Airport Way, Manteca, California Dear Mr. Infurna: At the request of Mr. Joe J. Machado,Advanced GeoEnvironmental, Inc. (AGE) has prepared this report for the property located at 20333 South Airport Way,Manteca,California. The scope of work included soil and groundwater sample collection,sample analysis,repair of septic system,permitting of septic system and preparation of this report. Background information was included in the AGE- prepared Limited Site Assessment Work Plan (Septic Tank Area),dated 13 May 2003 and approved by San Joaquin County Environmental Health Department (SJCEHD) on 13 June 2003. FIELD PROCEDURES The investigation, was conducted in accordance with Limited Site Assessment Work Plan (Septic Tank Area)to collect and analyze soil samples from beneath the septic tank, distribution box, each 20 feet of leach line and the end of each leach line of the on-site, residential septic system. On 10 June 2003 a Well Boring Permit Application was submitted to SJCEHD, which was approved on 10 June 2003. On 16 June 2003, an AGE representative was on site to locate the sampling points requested by SJCEHD.Utilizing a small excavator,the distribution box was located and uncovered. The leach lines were traced to their termination points. A section of each leach line was uncovered approximately 20 feet from the distribution box(d-box);the termination point of each line was also uncovered to facilitate sampling in each of those areas. The specific design of the septic system and locations of the sampling points are indicated on the site plan (Figure 2). 837 Shaw Road,Stockton, California 95215 Telephone(209)467-1006 FAX(209)467-1118