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require mitigation during construction; <br />4.2 Groundwater elevations will not have a long range impact on the constructed <br />development; <br />4.3 The zone of influence is completely within the right of way; <br />~4.4 The sequence, distribution, and characteristics of earth materials have been <br />defined and delineated throughout the site; <br />4S The report certifies that no additional investigation is warranted. <br />4.6 A Level 2 investigation shall be deemed sufficient for development of sites <br />that do not involve significant structures and/or facilities, geologic risks, constraints such as <br />expansive clay, and/or landslide azeas. <br />If the conditions listed in 4.1 through 4.6 are not met, a Leve13 analysis must be submitted. <br />R 9.6710-H ~ Level 3 -Investigation Methods and Report Requirements. <br />1. Geologic Investigation with Geotechnical Design Details. A Leve13 investigation <br />shall consist of: <br />1.1 The information required for a Level 1 and Level 2 investigation; <br />1.2 Site-specific geotechnical design of facilities such as, but not limited to,' <br />streets, foundations, utilities, retaining walls and structures due to ,geological constraints; <br />_ ~ 1.3 Results of test boringsand/or test pits and field strength tests such as Standard <br />. Penetration Test (SPT) or other field tests that measure the strength and durability of the <br />soils. Field measurements of aquifer chazacteristics using pumping tests or slug tests are <br />acceptable. Undisturbed samples of cohesive soils may be taken for laboratory tests such as <br />unconfined compression, triaxial compression, direct sheaz,. consolidation, and/or <br />permeability; <br />1.4 A report defining the condition and risk of the development site, in terms of <br />timing, extent, and mechanics; <br />1.5 Recommendations for engineering design and construction measures. <br />2. Investigation Methods. <br />2.1 Methods for Making; Test Borings or Test Pits. Excavations for undisturbed <br />sampling and/or field testing of soils/rock must consist of borings or pits, made by hand or <br />by machine. Any device, such as a backhoe, excavator, auger boring, wash boring, or mud- <br />rotary boring that will permit excavation to the desired sampling or testing depth and will <br />permit undisturbed sampling using thin-wall tubing or core barrel, as appropriate,. and/or <br />field testing of the soil or rock is acceptable. <br />2.2. Number and Locations of Test Borings or Test Pits. The spacing, locations <br />Administrative Order - 11 <br />r.\adminordlrules\02geotechl ao.wpd(09/05/02) <br />