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r Consistent with previous quarterly analytical results, thesam roundwater les collected from MW- 9 p 2, MW-4 and MW-6 contained dissolved concentrations of gasoline compounds The only lead scavenger compound (1,2-DCA and EDB) detected was 0 6 micrograms per liter (pg/1) of EDB in MW-6 The groundwater analytical results are summarized in Table 2, the distributions of TPH- as-gasoline, benzene and MTBE in groundwater are shown on separate isoconcentration maps (Figures 5, 6, and 7), and the laboratory reports are included in Appendix A 23 Free Product Removal On March 7, 2003, Ramage Environmental installed a Hydro-Skimmeffm passive free product skimmer in MW-1 The passive skimmer is four-inch diameter and 64-inches long, with a 10-inch ' recovery zone Between March 7, 2003 and March 15, 2006, after 45 site visits, approximately 220 94 ounces of accumulated free product have been removed from the skimmer During the first quarter of 2006, between January 9, and March 15, 2006, a total of 0 06 ounces of free product were removed in ' three monthly removal events, and the free product thickness ranged from a sheen to 0 02-foot All of the free product removal events are summarized in Table 3 r• r r r r r r r r