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Kraus-Anderson Realty Company Project BL-11-01014 March 18,2011 Page 18 F.2.b. Laboratory Testing The results of the laboratory tests performed on geologic material samples are noted on or follow the appropriate attached exploration logs.The tests were performed in general accordance with pertinent ASTM procedures. F.3. Groundwater Measurements Our drill crew checked for groundwater within the augers as the borings were advanced, at termination depth, and again after auger withdrawal.The boreholes were then backfilled with soil cuttings as noted on the boring logs. G. Qualifications G.1. Variations in Subsurface Conditions G.1.a. Material Strata Our evaluation, analyses and recommendations were developed from a limited amount of site and subsurface information. It is not standard engineering practice to retrieve material samples from exploration locations continuously with depth, and therefore strata boundaries and thicknesses must be inferred to some extent. Strata boundaries may also be gradual transitions, and can be expected to vary in depth, elevation and thickness away from the exploration locations. Variations in subsurface conditions present between exploration locations may not be revealed until additional exploration work is completed, or construction commences. If any such variations are revealed,our recommendations should be re-evaluated.Such variations could increase construction costs, and a contingency should be provided to accommodate them. G.1.b. Groundwater Levels Groundwater measurements were made under the conditions reported herein and shown on the exploration logs,and interpreted in the text of this report. It should be noted that the observation period was relatively short, and groundwater can be expected to fluctuate in response to rainfall, flooding, irrigation, seasonal freezing and thawing, surface drainage modifications and other seasonal and annual factors. BRAUN INTERTEC