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<br />required in a Level I and include the following: <br />3.6.1 Plot plan showing locations of borings and test pits. <br />3.6.2 Logs of borings and/or observations pits, including all sampling data <br />and water level measurements. <br />3.6.3 Soil profile drawing showing estimated stratigraphy and the locations <br />of field samples and observed water levels. <br />3.6.4 Map showing boundaries of units. <br />3.6.5 Map showing areas of potential geologic-natural and/or seismic <br />hazards, if any (by inclusion or by reference in body of text). <br />3.6.6 Map defining and delineating the sequence, distribution, and <br />characteristics of soil/rock materials throughout the site. <br /> <br />4. Review and Determination. Further geological and geotechnical investigation is <br />required when one of the following circumstances exist: <br /> <br />4.1 The analysis reveals evidence of existing or potential stability problems; <br /> <br />4.2 In the Qualified Registered Professional's opinion, site conditions such as <br />spring, seeps, depth of soil to bedrock, variations in soil types, or a combination of these <br />conditions will impact the design parameters of the structure. <br /> <br />If either of the circumstances listed in 4.1 or 4.2 exist, a Level 3 analysis must be submitted. <br /> <br />R-9.6710-H Level 3 - Investi~ation Methods and Report Requirements. <br /> <br />1. Geoloeic Investi~ation with Geotechnical Desi~n Details. A Level 3 investigation <br />shall consist of: <br /> <br />1.1 The information required for a Level 1 and Level 2 investigation; <br /> <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 topographic and geologic <br />constraints; <br /> <br />1.3 Resul ts 0 f test borings and/or test pits and field strength tests such as Standard <br />Penetration Test (SPT) or other field tests that measure the strength and competency of the <br />soils. Field measurements of aquifer characteristics 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 shear, consolidation, and/or <br />permeability. <br /> <br />2. Investi~ation Methods. <br /> <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 /> <br />Administrative Order - 18 <br />R:\ADMINO RD\RULES\03 geotech2ao. wpd(03/26/03) <br />