be obtained by studying the ability of an amount of filler material to recover its original thickness after the application and removal of a particular load in one such test one 1 0 pound of crimped pet fiber loose filler is placed in a circular container having a 6 0 inch diameter and its thickness is measured a compressive load of 0 5 psi is then applied evenly across the top surface of the loose filler for a period of 5 0 minutes after the compressive load is removed the thickness of the loose filler is measured again a percent recovery is then computed by dividing the thickness after compression by the original thickness and multiplying by 100 for the crimped post consumer pet fibers used as a filler material in the present invention it was determined that the loose filler had a percent recovery value ranging from about 95 to about 97 of its original thickness referring now to fig4 a block diagram illustrates by way of example only the various steps of a manufacturing process 400 which may be followed to construct an erosion control blanket in accordance with the present invention in one embodiment post consumer plastic materials such as soda bottles and containers are collected and sorted 405 according to polymer types e g polystyrene polyethylene terephthalate polybutylene terephthalate polyethylene polypropylene and so forth these containers are then mechanically shredded 410 and cleaned 415 with high temperature steam to produce post consumer scrap polymer which is suitable for reprocessing a fiber manufacturer may then purchase scrap polymer of a particular type such as pet pelletize 420 the scrap polymer melt the polymer 425 in an extruder and melt spin 430 fibers from.