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If mitigation implemented will <br /> Potentially Significant Impacts Suggested Mitigation Measures impact be less than significant? <br /> Prior to further land disturbance, recommendation Yes <br /> for further studies should include,but not be limited <br /> to, the following: <br /> • Known sites should be mapped by <br /> professional surveyor and a qualified <br /> archaeologist. <br /> • All existing collections should be analyzed, <br /> photographed,correlated and if possible, <br /> collected in one place. <br /> Known sites must be tested to determine the extent Yes <br /> and type of contents, plus depth, integrity, age, and <br /> intrasite patterning(e.g. in depth, horizontal extent <br /> and artifact density),as follows: <br /> N • For the two newly recorded habitation sites <br /> (W4491 land 1147-491 ').,(CA-SJO-0237, <br /> -0238,-0240),at least eight one-by <br /> two-meter test units in each should be <br /> excavated to the sterile level <br /> (approximately two meters); at least 20 <br /> obsidian hydration samples and at least <br /> five carbon-14 samples should be dated for <br /> each test unit. <br /> • For the lake site (1!4&9 1),(CA-SJO- <br /> 0011),at least 20 one-by two-meter test <br /> units should be excavated until a sterile <br /> level is reached(approximately three <br /> meters); at least 30 obsidian samples and <br /> at least 10 carbon-14 samples should be <br /> dated for each test unit. <br />