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\ Guilarte Residence-Claim No.354110 HCE Report No. 100091.1 Page No. 6 Soil Sample Handling and Classification The soil samples obtained during the SPT borin s were placed in sealed containers to retain moisture and then returned to our laboratory. The samples were th n reviewed by our project engineer to confinn classifications, visually estimate the relative percentages of tl e soil's constituents (sand, clay, etc.), and identify pertinent structural feahires. The stratification lines s own on the boring records represent our interpretation of approximate boundaries between soil types. Th transition between strata may be gradual. Our classifications are based on a visual estimation of the soil prope ies and our engineering experience with the soils found in this geologic area. Floor Level Survey A floor level survey was conducted using a water evel manoineter. The manoineter used a tripod supported water reservoir connected to water filled clear tubing. The tubing tenninates along a graduated stadia,and the water level at the stadia is the same as the level at the eservoir. Consequently,the floor elevation at designated data points throughout the structure could be meas ed relative to the elevation of the manometer reservoir. The elevation from the data points were adjusted for different floor covering elevations, and then reduced to reflect the elevation relative to the lowest points. The enclosed porch and .garage were surveyed separately. Approximate lines of equal elevations were dra n to the nearest tenth of an inch and are shown on the results which are attached in�pendix D.Fi zrg �•e 4 of t iis report. LAB RATORY TESTS Laboratory tests are commonly perfonned on soi samples to inore definitively establish their physical properties. Laboratory tests often inchide;organic content, noisture content,percent material finer than No.200 sieve,and Atterberg limits. Eight samples were tested to d tennine fines and moisture content and to detennine the correct classification. These sainples consisted of shallo clayey soils. The results of these laboratory tests are presented below in the Results section. RESULTS Ground Penetratin�Radar After receipt of the GPR report,tliis author revie ed the GPR survey results,including the digital profile imagery, to review the findings. Upon coinpletion of th invasive testing,the GPR digital profiles were reviewed again with the findings of the borings to re-evahiate t e initial interpretations of the GPR profiles. The GPR survey was perfoi7ned on the interio and exterior of the structure and did not identify any a�parent geologic features of interest. For a more deta led discussion of the results of the GPR survey, the reader is referred to the Ground Penetrating Radar Repo in�vendix C. Borin s SPT Borings SPT boring B-1 was perfonned near the fi•ont ri ht corner of the residence near dainage observed to the structure. The boring encountered loose to dense fine san to clayey fine sand,with N-values ranging from 6 to 34 blows per foot,fi•om the ground surface to a depth of 8 feet and again from a depth of 48 to 53 feet. From a depth of 3 8 to 48 feet the boring encountered very loose t loose clayey fine sand with liinestone fraginents,with N-vahies of 2 and 5 blows per foot. Very stiff clay with imestone fraginents,with an N-value of 21 blows per foot,was encountered from a depth of 53 to 57 feet,und -lain by very hard lunestone,with an N-value of 50 blows for 6