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Ms. Margaret Lagorio <br /> September 1, 2000 <br /> Page 2 of 2 <br /> using EPA Method 8260, and providing a brief letter of results. However, during the permit <br /> process, it was determined by PHS/EHD that the property apparently utilized a pit well as part of <br /> the leach system. No information on the exact location of the pit well was available. Consequently, <br /> PHS/EHD required that the pit well be located and a soil sample collected from native soil <br /> immediately below the pit well. <br /> PROPOSED SCOPE OF WORK <br /> The scope of work to complete the investigation of conditions beneath the leach field and the pit <br /> well will consist of the following: <br /> 1. Parrish & Sons, Inc., a local septic tank contractor, will attempt to locate the pit well using a <br /> backhoe excavator. The pit well and leach field will be delineated using flags to enable selection of <br /> appropriate boring locations. <br /> 2. Ground Zero will supervise the drilling of one soil boring adjacent to the pit well to a depth of <br /> approximately 30 feet below ground surface(bgs) and up to four soil borings adjacent to the leach <br /> field to a depth of approximately 5 feet bgs to collect soil samples beneath the septic system. <br /> Proposed boring locations are shown on Figure 2. The drilling will be conducted by Fisch <br /> Environmental (C57-683865)using a Geoprobe 5400 direct push drilling rig. Soil samples will be <br /> collected at the desired depth using a 1.75-inch diameter drive sampler lined with acetate sleeves. <br /> Soil samples will be field screened for the presence of VOCs using a PID. Borings will be <br /> subsequently filled to the ground surface with neat cement grout. <br /> 3. If field readings indicate that VOCs are present, the sample with the highest field reading will be <br /> analyzed by a Argon Labs, a State certified analytical laboratory(ELAP #2359) for the presence of <br /> VOCs using EPA Method 8260. If no indications of VOCs are recorded, then the sample <br /> collected beneath the pit well, and one composite sample from the shallow borings beneath the <br /> leach field, will be analyzed for VOCs. <br /> 4. Ground Zero will provide a brief letter of results of the investigation to Mr. Stephen Howard of <br /> Central Valley Realty. <br /> All work will be conducted in accordance with the Site Safety Plan attached. Please call me at (209) <br /> 838-9888 if you have any questions regarding this submittal. <br /> Sincerely, F-D G�e� <br /> Ground Zero Analysis, Inc. 5 lO�i <br /> ¢ JONN P. <br /> Lh"vc <br /> U, No. 6 795 <br /> John P. Lane <br /> CA Registered Geologist No. 6795 <br /> Attachments <br /> (YAData\GROLTNDZEICntrl Val leyRealtors4orkplan.doc <br />