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Michael Infurna <br /> October 20,2003 <br /> Well Sampling and Water Level Measurement. A gr o dwater sample will be collected from the <br /> newly installed monitoring wells following completion cf well development. Prior to purging and <br /> sampling, the depth to the water table will be measured to within 0.01-foot relative to a reference <br /> point on each monitoring well. The wells will be purged and sampled in accordance with the field <br /> methods and procedures described in Enclosure B. The groundwater samples will be submitted to <br /> Kiff for analysis of BTEX,TPHg,and MTBE using EPA Method 8260. <br /> Surveying of Wells. The elevation of a reference point n the monitoring well and adjacent ground <br /> surface will be surveyed at each newly installed well by a i appropriately-licensed land surveyor. To <br /> comply with State regulation AB2886, Delta will request the licensed surveyor to reference the <br /> locations of the newly installed wells and soil borings 1 o the California State Coordinate System <br /> using Global Positioning Satellite (GPS) surveying. T e top of casing (TOC) elevations of the <br /> monitoring wells and ground surface elevations will be surveyed relative to MSL within 0.01-foot. <br /> Schedule <br /> Delta has scheduled a drilling subcontractor for the week of October 27, 2003. Delta requests <br /> expedited approval of this work plan by the SJEHD and I ave submitted a drilling permit application <br /> and fee to facilitate the approval process. A report sumn arizing the results of the investigation will <br /> be submitted to the regulatory agencies 60 days following the completion of the proposed scope of <br /> work. This report will include conclusions. <br /> Remarks/Signatures <br /> The interpretations contained in this report represent o professional opinions, and are based in <br /> part, on information supplied by the client. These o Dinions are based on currently available , <br /> information and are arrived at in accordance with current y accepted hydrogeologic and engineering <br /> practices at this time and location. Other than this,no wai ranty is implied or intended. <br /> If you have any questions regarding this project,please cc ntact John Smith at(916)536-2617 or Jim <br /> Brownell at(916)638-2765. <br /> Sincerely, <br /> DELTA EN,7qRONMENTAL CONSULTANTS,INC <br /> ohn Smi �p`���F►. $I�Qr <br /> Project 11anager <br /> No.s <br /> James R Browne 1 * EX $[3r� <br /> California Registered Geologist No. 5078 <br /> Enclosures 9rF fi CAL%f0 <br /> cc: Rob Donovan,Tesoro Petroleum Companies,In-,. <br /> Chuck Miller,USA Petroleum <br /> 1 <br />