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' Cimbg4ut reduda Inla Page 5 Groundwater Momtonng Report Project No 724 2 November 21,2005 As required under AB2886, the laboratory data and groundwater elevation were submitted electronically to GeoTracker on November 21, 2005 (confirmation #'s 2061237990 and ' 3137730240, respectively) ' 2.0 FINDINGS AND DISCUSSION The results of the groundwater sample analyses indicate the following ' 1 Non-detect Wells • Wells — MW-1, MW-3, MW-4, MW-5, MW-6, MW-11, MW-104, MW-11.0, MW-111, MW-202 and MW-210 did not contain petroleum hydrocarbon contaminants above the laboratory reporting limits 2 TPH-G ' • TPH-G was not detected in any of the shallow wells • Intermediate wells MW-2, MW-106 and MW-108 contained 74, 110 and 72 µg/1 of TPH-G, respectively ' • Deep well MW-208 contained 770 µg11 of TPH-G 3 MTBE • Shallow well MW-7 contained 2 µg/L O Intermediate wells MW-106, MW-107 and MW-109 contained 20, 4.8 and 2 5 µg11 MTBE, respectively ' o Deep well MW-209 contained 13 µg/1 of MTBE 4 Benzene © Benzene was not detected in any of the shallow wells ' • Intermediate wells MW-2, MW-106 and MW-108 contained 0 68, 0 95 and 1 1 µg/1 Benzene, respectively • Deep well N4W-208 contained 6 6 µgll of Benzene The distribution of groundwater contaminants is summarized as follows (Note The Isoconcentration contours are generated utilizing the SURFER® computer modeling program We recognize that computer generated contour maps do not provide the most accurate representation of what is taking place in the field However, even hand- contoured maps at best provide a shadow of reality Bath need to be looked at as interpretation, not reality) ' 1 TPH-G • None of the shallow wells contained TPH-G above the laboratory reporting limits and ' therefore a contour diagram was not produced 1