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r r I r r r r r r It It Ir r r r r r t <br /> Start Evaluation of Four <br /> Consecutive YES <br /> Each Monitoring Well for Quarterly Sampling <br /> BTEX,TPH-Gasoline, Events <br /> 1,2-DCA,EDB, Completed? <br /> and TBA <br /> NO <br /> Quarterly Sampling Location <br /> of Well with <br /> Respect <br /> to Plume <br /> Upgradient Well i Down radiant Well I I <br /> MW-DIS-3 g Crossgradient Well Well in Plume <br /> MWDIS-4 I MW-DIS-11 { I MW-Di8.1 <br /> MWDIS•5 I MW-DIS-11D I MW-DIS-9 I MW-018.2 <br /> MWDIS•6 MW-DIS-12 NP-1-70 <br /> MW-DIS-7S I MW-DIS-13 I I NP-1-80 <br /> MW-DIS-71) I MW-DIS-14 I ! NP-1-90 <br /> MWDIS-8S MW-DIS-14D NMA <br /> MW-DIUD II I <br /> MW-DIS-10 I I I <br /> I I I <br /> ND for YES ! JYESt2) I ND for YES Annual Sampling I <br /> Four Consecutive P g Semi•Annual Sampling <br /> Four No Sampling Ii-Annual Sampling I Events (Third Quarter) I (First&Third Quarter <br /> Consecutive Required krst&Third Quarter) k I <br /> Events I( I NONO LlnTnua"amp'ln, <br /> ird Quarter) I I { <br /> i I <br /> I I i <br /> Note:Water level measurements to be collected quarterly <br /> Figure 5 <br /> Groundwater Monitoring Frequency <br /> Decision Tree <br /> Del Monte DISCO Site,Stockton,CA <br /> 131420,A1.06•Dec1s10n F19.5.FHB -1115141 ceo s10 CH2MHILL <br />