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Proposed Monitoring Well Sampling Schedule <br /> Nomellini Construction Co. <br /> 1045 West Chatter Way <br /> Stockton, CA <br /> Well I.D. Water Screen Interval (feet) Petroleum Impact Proposed Monitoring Frequency Justification for Sampling Reduction <br /> MW-1 UPPER 33 to 53 YES Quarterly N/A <br /> MW-2 UPPER 32to52 YES Quarterly N/A <br /> MW-3 UPPER 30 to 50 YES Annually redundant sampling point and proximity to MW-6 <br /> MWA UPPER 30 to 45 YES Quarterly N/A <br /> MW-5 UPPER 30 to 45 NO Annually monitoring well not impacted <br /> MW-6 UPPER 25to40 YES Quarterly N/A <br /> MW-7 UPPER 25 to 45 YES Annually cross gradient and stability of concentrations 17 consecutive quarters <br /> MW-8 UPPER 14 to 44 NO Annually monitoring well not impacted and proximity to release area JI <br /> MW-9 UPPER 22 to 41 NO Annually non-detect since 12/07/1998 <br /> MW-10 LOWER 55 to 60 YES Annually stability of concentrations 6 consecutive quarters <br /> MW-11 UPPER 40 to 50 YES Annually N/A <br /> MW-12 LOWER 55 to 60 YES Annually stability of concentrations 10 consecutive quarters <br /> MW-13 LOWER 104.5 to 114.5 YES Quarterly N/A <br /> MW-14 LOWER 95 to 105 YES Quarterly N/A <br /> MW-15 LOWER 105 to 115 YES Quarterly N/A <br /> REMEDIATION WELL NETWORK <br /> VW-1 UPPER 15 to 30 YES Annually retrofit as a remediation well and proximity to EW-1 <br /> VW-2 UPPER 15 to 30 YES Annually retrofit as a remediation well and proximity to EW-1 <br /> VW-3 UPPER 5 t 20 NO Notsampled monitoring point not impacted <br /> VW-4 UPPER 5 t 20 NO Notsampledaon-detect for since 03/02/05 <br /> VW-5 UPPER 5 t 20 NO Notsampled non-detect since 05/18/01 <br /> VW-6 UPPER 5 t 20 NO Notsampled monitoring point slightly or not impacted <br /> VW-7 UPPER 5 t 20 NO Notsampled monitoring paint slightly or not impacted <br /> VW-8 UPPER 5 t 20 NO Not sampled monitoring point slightly or not impacted <br /> VW-9 UPPER 5 to 20 NO Not sampled non detect since 12/23/05 <br /> AW-1 UPPER 25 to 30 YES Annually redundant sampling point and proximity to EW-1 <br /> AW-2 UPPER 25 to 30 YES Notsampled redundant sampling point and proximity to EW-1 <br /> AW-3 UPPER 25 to 30 YES Not Sampled redundant sampling point and proximity to EW-1 <br /> AWS UPPER 25 to 30 YES Not Sampled redundant sampling point and proximity to EW-1 ej <br /> AW-5 UPPER 25 to 30 YES Not Sampled redundant sampling point and <br /> p p proximity to EW-1 <br /> EW-1 UPPER 20to40 YES Quarterly N/A <br /> Font Indicators: <br /> Bold- indiotes wells to he sampled on a quarterly basis <br /> Italicized-indicates wells to be sampled on o annual basis <br /> Nan-bald and non italicized- well sampling removed from monitoring program <br />