On April 29th, the California Geological Survey (CGS) released production data from 2012 indicating that the production of construction aggregate (sand, gravel and crushed stone) increased for the first time since 2007 in California.  Construction aggregate production increased by 7.3 percent to 121.3 million tons (valued at $1.162 billion).  Portland cement production also increased by

Those that “dig in the dirt” are very familiar with the Damage Information Reporting Tool (DIRT), which was launched in 2003 by the Common Ground Alliance (CGA). Over the years California has enacted several statutes requiring anyone moving dirt to notify a regional notification center of the area of planned disturbance that may impact a subsurface