SITE INFORMATION AND CORRESPONDENCE

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low the wells will be either steam cleaned or washed with an Alconox solution and rinsed with distilled water. Task 3: Sampling and Analysis A minimum of 48-hours after redevelopment of the wells, each of the wells will be sampled. Prior to sampling, the depth to groundwater and the thickness of the immiscible layer (if any) will be measured. Wells which do not have a product layer will be purged of approximately three well volumes of water. After purging, a clean disposable bailer will be used to collect the sample from the top of the groundwater. Water from each well will be transferred into three HCl preserved 40-m1 VOA bottles supplied by the analytical laboratory. The bottles will be labeled, logged on a chain-of-custody, and immediately placed in an iced cooler. The three (one per well) water samples will be analyzed for TPHg and BTEX by EPA Method 5030/8015M plus 8020 at Western Environmental Science and Technology (WEST). WEST is certified by the State of California Department of Toxic Substances Control (DTSC) for the requested analyses. A copy of the analytical report will be sent directly to Ms. Linda Turkette (SJCEHD) by the laboratory. Task 4• Reporting Upon receipt and review of the data, a report of findings will be produced. The report will contain a summation of the field activities and findings, a summation and tabulation of the analytical data, and a presentation of this consultants conclusions and recommendations based upon the data. LMTATIONS The collection of subsurface information is an inexact science. The preferred methods used to collect subsurface data should be expected to vary between different consultants. Furthermore, the methods used by the same consultant should be expected to change based on site conditions and technological advances. This work plan represents a professional opinion based on the data provided in the reports cited earlier and the request of SJCEHD. This work plan does not represent this professional's opinion regarding the total scope of work which may need to be performed to fully assess and or remediate this site. No warranty is expressed or implied. No portion of this work plan may be used in any form or for any purpose without the prior written consent of its author.