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CH2M HILL 155 Grand Avenue Suite 1000 Oakland,CA CH2MHILL 9,4612 P.O.Box 12681 Oakland, CA November 26,2001 rl \f 2 Q Z Q Q) 94604-2661 Tel 510.251.2426 Attention: Mr.Jeffery Wong CI. Fax 510.693.8205 San Joaquin County Public Health Services- Environmental Health Division(PHS-EHD), 304 East Weber Avenue,3rd Floor, Stockton,California 95202 Subject: Environmental Sampling Permit for One (1) Pacific Gas &Electric Company Gas Gathering Station Located within San Joaquin County Dear Mr.Wong, The purpose of this letter is to provide the work plan and drilling time and date for the above work. Representatives of CH2M HILL have previously been in contact with you to initiate the permit application process. As the project hydrogeologist,I will be organizing and conducting the drilling program,and wish to help you coordinate your site inspections. A brief outline of the project follows. CH2M HILL has been commissioned by the Pacific Gas and Electric Company(PG&E) to conduct environmental sampling at 14 gas gathering stations located within seven Counties in the Central Valley,California. These stations are part of PG&E's California Gas Transmission System. The Central Valley Regional Water Quality Control Board (CVRWQCB)has instructed PG&E to conduct this work and is the regulatory oversight authority for the project. The Vernalis Dehydrator Station is located within Tehama County. Because the sampling depths for this program are relatively shallow,a hand auger will be used to collect all samples. The sampling will be performed by CH2M HILL staff. Therefore,a drilling contractor and drill rig will not be used. The planned drilling date is from approximately 9:00am to 1:00pm,Monday,December 10th, 2001. This date may change due to inclement weather or other unforeseen factors. I will inform you of the final sampling date with as much advance notice as possible. Driving directions to the site is included with this package. A summary of the proposed sampling and permit fee calculations are shown in Table 1. Sampling locations are shown on the accompanying site work plan(Figure 1). I understand that the fee for the boring permit is$89. A check for this amount is included. Should you have any questions my contact details follow: