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r ` :x <br /> From: Olton, Shane [mailto:Shane.Olton((bstantec.com] <br /> Sent: Thursday, July 25, 2013 1:38 PM <br /> To: Lisa Medina [EH] <br /> Subject: 2905 &2908 Benjamin Holt Drive, Stockton, CA - Request for well destruction Variances <br /> Hi Lisa, <br /> As previously discussed, we are requesting a variance in well destruction method from over-drill to pressure grout for <br /> select wells due to utility, access, and/or logistical issues. The following is a list of wells that we are requesting a variance <br /> for with a description as to what the issues are. Please refer to the attached map for well locations and utilities. Pictures <br /> are available if required. <br /> Well I.D. Approved Well Variance Utility Conflicts <br /> Destruction Method Re nested <br /> Chevron Wells <br /> MW-6(C) Over-drill Pressure Grout Overhead(Tree);'h"non-metallic utility intersecting well column(depth undetermined) <br /> Mw- Over-drill Pressure Grout 6'from tank pit <br /> 1R C <br /> ARCO Wells <br /> E-2(A) Over-drill Pressure Grout Overhead utility 10'south(15'high)and 9'northeast(15'high);Sanitary sewer 9"northeast of well column(10" <br /> dee <br /> E-4(A) Over-drill Pressure Grout Subsurface electrical line to station lighting 6"east of well column(1'deep) <br /> E-6(A) Over-drill Pressure Grout Directly adjacent to above-ground vapor tank bollard/compound;vent lines directly adjacent <br /> E-9(A) Over-drill Pressure Grout Irrigation line 1'6"east of well column (depth undetermined); Subsurface electrical 2'6" south of well column <br /> (depth undetermined);ARCO station sign 6"west of well <br /> E-10(A) Over-drill Pressure Grout Overhead(Tree); Station canopy 6'south of well; Storm Drain 4'6"east of well column(depth undetermined); <br /> Irrigation line 2'6"north of well column(depth undetermined) <br /> MW-3(A) Over-drill Pressure Grout Offsite;Unknown utility 2'east of well column(depth undetermined) <br /> V-1(A) Over-drill Pressure Grout 7'from pump island <br /> V-5(A) Over-drill Pressure Grout Overhead utility(unknown voltage)9'south <br /> V-6(A) Over-drill Pressure Grout Overhead(station awning);Sanitary sewer 1'4"northeast of well column(6"deep);Product lines 3'south of well <br /> column(depth undetermined <br /> V-7(A) Over-drill Pressure Grout Overhead utility(unknown voltage)7'southwest(15'high) <br /> V-8(A) Over-drill Pressure Grout Sanitary sewer 1'6"northeast of well column(7"deep);tank pit 2'south of well <br /> V-9(A)/ Over-drill Pressure Grout Overhead utility(unknown voltage)8'southwest @ 15' <br /> S-7(A) <br /> V-11(A) Over-drill Pressure Grout Tank Pit 10'north <br /> V-12(A) Over-drill Pressure Grout Subsurface electrical line to station lighting 1'6"east of well column(1'deep) <br /> S-2(A) Over-drill Pressure Grout Underground electrical line 6"north of well column(1'9"deep) <br /> S-3(A) Over-drill Pressure Grout Vent lines 7'to the north <br /> S-4(A) Over-drill Pressure Grout Sanitary sewer 1'9"northeast of well column(6"deep);adjacent multiple tank pits(8') <br /> S-5(A) Over-drill Pressure Grout Tank Pit 6.5'north of well box;Overhead utility(unknown voltage)9'south @ 15'&25'high <br /> S-6(A) Over-drill Pressure Grout Overhead utility(unknown voltage)9'south @ 15'&25'high <br /> Well I.D. Abnormal Conditions <br /> R-1(A) Over-drill Pressure Grout 12.1"well casing will not fit inside 18"augers for over drill. Request abandonment via 10.3 sack sand slurry <br /> mixture. <br /> 6 <br />