3. Specific storage due to expansion of water is 9 x 10-7 m-1 for sandstone with porosity of 20%. If the total head drop is 100 m and the aquifer thickness is 100 m. 1. How much of total pumped water of 110 x 106 m3 has been supplied by water expansion. 2. If expansion of water is ignored, how much of the pumped water is supplied by the compression of the matrix for Ss = 10-5 m-1