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s <br /> B R 0 W N A D <br /> C A L D W E L L <br /> September 14, 1994 <br /> Mr John Gagliano <br /> Caltrans Permitting <br /> Post Office Box 2048 <br /> Stockton, California 95201 017-1506-01/1 <br /> Subject Request for Permission to Install One Groundwater Monitoring Well <br /> on Caltrans Property at Interstate 5 and Benjamin Holt Drive near <br /> ARCO Station 2133, Stockton, California <br /> Dear Mr Gagliano <br /> This letter is a second request to install one groundwater monitonng well on Caltrans' <br /> property near the north-bound Interstate 5 otf-ramp at Benjamin Holt Drive The first request <br /> was submitted in a March 17, 1994 letter to Caltrans The proposed well would be installed <br /> in the 60-foot-wide open area between the oft-ramp and the concrete wall that defines the <br /> western edge of the ARCO Products Company (ARCO) property Figure 1 shows the <br /> proposed location of the well <br /> The San Joaquin County Public Health Services, Environmental Health Division (County), is <br /> requinng that ARCO conduct an investigation of the soil and groundwater to the west and <br /> southwest of the ARCO facility on Caltrans' property Currently, ARCO has groundwater <br /> monitoring wells located on the western and southern edges of the ARCO property <br /> The well would be installed using a truck-mounted hollow-stem auger drill rig The well <br /> would be approximately 30 feet deep and would be completed in a flush-mounted traffic box <br /> The installation of the well in the Caltrans property will be completed within two days After <br /> the well is installed, groundwater samples will be collected from the well on a quarterly basis <br /> Other periodic maintenance on the well may be required The well is expected to be in place <br /> for at least five years <br /> Enclosed with this letter are two copies of an ARCO access agreement If you agree with the <br /> terms and conditions of the agreement, please sign both copies and return them to me We <br /> will forward the agreements to ARCO for their signature and then return one fully executed <br /> copy to you <br /> 09115000ORRESPkI50601 L4 <br /> QMS-PS410 <br /> Envreonmenrar Engineering ancf Consuming anayacal5eiv Ces <br /> 9616 %1A%E%I,E P 0 130113449 5 %CRA%IE%TO CA 981s 3 44 9 <br /> 1916} {44 0 12 3 FiL 91618)6 )2 7 7 <br />