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4 <br /> Virgil Chavez Land Surveying <br /> • 312 Georgia Street, Sutte 200 <br /> Vallejo, Caltfornta 94590-5907 January 17 , 2000 <br /> (707) 553-2476 o Fax(707) 553-8698 Pro e c t No. 1703-05 <br /> Matt Gafney <br /> Cambria Environmental <br /> 1144 65th Street, Suite C <br /> Oakland, Ca 94608 <br /> Subject : Monitoring Well Survey <br /> Shell Service Station <br /> 341 East Main Street <br /> Ripon, Ca. <br /> Dear Matt: <br /> This is to confirm that we have proceeded at your request to <br /> survey the monitoring wells located at the above referenced <br /> location. The survey was performed on January 8, 2000 . The <br /> elevations for the survey are assumed, and are based on the <br /> same datum as our previous survey. The station and offset <br /> data is for top of casing locations, using the southerly face <br /> of the existing station building as reference line. <br /> Rim TOC <br /> Well No. Elevation Elevation Station Offset <br /> MW - 4A 64 . 12 ' 63 . 77 ' 0+12 . 37 84 20 (Rt . ) <br /> MW - 4B 64 . 18 ' 63 . 77 ' 0+07 . 80 83 10 (Rt . ) <br /> MW - 5A 65 . 50 ' 65 . 08 ' 0+91 . 09 21 00 (Rt. ) <br /> MW - 5B It 64. 99 , 0+91 . 11 21 . 41 (Rt . ) <br /> MW - 6A 63 . 43 , 62 . 97 ' 2+70 . 91 187 50 (Rt . ) <br /> MW - 6B it 63 05 ' 2+70 . 86 187 90 (Rt . ) <br /> SW Bldg Cor 0+00 --- <br /> SE Bldg Cor 0+56 41 --- <br /> Measurements taken at approximate north side of top of box, <br /> top of casings were marked at location of measurements. <br /> �A'�ID j�\ Sincerely, <br /> t �t <br /> I� r r4o C323 <br /> Virgil Chavez , PLS <br /> 6,123 <br /> C/ <br />