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require mitigation during construction; <br /> <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 /> I ~ 4.4 The sequence, distribution, and characteristics of earth materials have been <br /> defined and delineated throughout the site; <br /> 4.5 The report certifies that no additional investigation is warranted. <br /> 4.6 A Leve12 investigation shall be deemed sufficient for development of sites <br /> that do not involve significantstructuresand/or facilities, geologic risks, constraints such as <br /> ~ expansive clay, and/or landslide areas. <br /> r <br /> If the conditions listed in 4.1 through 4.6 are not met, a Leve13 analysis must be submitted. <br /> k R-x.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 /> <br /> ~ j 1.1 The information required for a Level 1 and Leve12 investigation; <br /> I~ <br /> <br /> ~ t 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 /> I 1.3 Results of test borings and/or test pits and field strength tests such as Standazd <br /> Penetration Test (SPT) or other field tests that measure the strength and durability of the <br /> soils. Field measurements of aquifer characteristics using pumping tests or slug tests are <br /> f acceptable. Undisturbed samples of cohesive soils may be taken for laboratory tests such as <br /> C unconfined compression, tnaxial compression, direct sheaz, consolidation, and/or <br /> permeability; <br /> <br /> ~ ~ 1.4 A report defining the condition and risk of the development site, in teens of <br /> timing, extent, and mechatucs; <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 appropnate, 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~o.wpd(09/05/02) <br /> <br />