appendix e technical memorandum electrical energy grid life cycle inventories for the cdp this page intentionally left blank 1 introduction background us environmental protection agency s epa design environment dfe program computer display project is conducting a combined cleaner technologies substitutes assessment ctsa and lca to evaluate relative impacts cost performance of cathode ray tube crt active matrix liquid crystal amlcd desktop monitors initially an determine potential including from materials extraction processing manufacturing monitor components use end disposition transportation information also included within between each stage has four major goal definition scoping 2 inventory lci 3 impact lcia 4 improvement collection inputs other resources outputs products wastes emissions processes throughout product characterizes
