The site for a commercial building project has the surface elevation lowered by 1.39 m to improve area grading for the building access, parking and drainage. The unit weight of the soil removed was 18.5 kN/m3. Foundations for the building will be constructed at the level of the new ground surface elevation. Each foundation is 1.5 m by 1.5 m square and imposes a bearing pressure of 420 kPa. Using the 2:1 approximation method determine the net increase in stress (kPa) at a depth of 1.4 m below the footing. Provide your answer to 2 decimal places. Do not include units in your