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<br />Subsidence Investigation <br />Mathewl Aley Rental Property <br />Claim No. 223968 <br /> <br />BCl Project No. 03-15564 <br />November 2007 <br />Page 4 <br /> <br />addition foundation is a thickened-edge slab and is founded approximately 4 inches below existing grade. Hand <br />cone penetrometer probings completed in the test pits indicate the house and addition foundations are embedded <br />in very loose soils (Table 1). <br /> <br />2.5 Hand Cone Penetrometer Probings <br /> <br />A series of hand cone penetrometer probings was completed around the perimeter of the house, at the <br />locations shown on Figure 2. The probings were completed by pushing a steel rod with a cone-shaped tip <br />vertically into the ground, and measuring the resistance of the soils to penetration to determine the relative density <br />and consistency of the shallow soils. In general, very loose to loose soils were encountered around the perimeter <br />of the house to depths ranging from 64 to greater than 96 inches below grade. The hand cone penetrometer data <br />are summarized below in Table 1. <br /> <br />Table 1 <br />Hand Cone Penetrometer Data <br />Mathew/ Aley Rental Property <br /> <br />Probe Location General Description <br />ID <br />PI Boring HA-1 o to 10 inches-very loose; 10 to 86 inches-loose; 86 to 95 inches-medium <br />dense; refusal <br />P2 Boring HA-2 o to 14 inches-very loose; 14 to 96 inches-loose <br />P3 Boring HA-3 o to 10 inches-very loose; 10 to 84 inches-loose; 84 to 95 inches-medium <br />dense; refusal <br />P4 Boring HA-4 o to 48 inches-very loose; 48 to 87 inches-loose; 87 to 90 inches-medium <br />dense; refusal <br />P5 Test pit TP-l o to 7 inches-excavated; 7 to 10 inches-very loose; 10 to 83 inches-loose; <br />83 to 85 inches-medium dense; refusal <br />P6 Test pit TP-2 o to 19 inches-very loose; 19 to 36 inches-very loose; 36 to 64 inches- <br />loose; 64 to 68 inches-medium dense <br />P7 NW corner of o to 8 inches-very loose; 8 to 78 inches-loose; 78 to 96 inches-medium <br /> garage dense <br />P8 West wall o to 48 inches-very loose; 48 to 86 inches-loose; 86 to 95 inches-medium <br />dense <br />P9 Ground collapse o to ~ 36 inches-ground collapse; 36 to 96 inches-very loose <br />P10 South wall near o to 14 inches-very loose; 14 to 96 inches-loose <br />southwest corner <br />Pl1 South wall near o to 10 inches-very loose; 10 to 92 inches-loose; 92 to 95 inches-medium <br />southeast corner dense; refusal <br />P12 North addition wall o to 9 inches-very loose; 9 to 96 inches-loose <br />P13 NE corner o to 48 inches-very loose; 48 to 78 inches-loose; 78 to 85 inches-medium <br />dense; refusal <br />P14 North wall o to 9 inches-very loose; 9 to 96 inches-loose; 96 to 98 inches-medium <br />dense; refusal <br /> <br />Notes: Depths in inches below ground surface <br />Probing locations shown on Figure 2 <br />