Conservationists Assail E.P.A. Rules Cutback
EPA Admr Russell E Train's directive ordering his assts to reduce number and complexity of regulations to combat pollution has raised charges by conservationists that Ford Adm has abandoned natl commitment for clean air and water; order appears to parallel Pres Ford's announced drive to reduce unnecessary or arbitrary actions by Fed Govt; EPA deputy dir John R Quarles denies that agency's effort has been taken in direct response to Pres's position and defends campaign as being required to improve agency's performance, int; Natural Resources Defense Council atty David G Hawkins charges that policy will produce delay and inaction in environmental programs and will frustrate citizen participation by creating body of secret agency decision-making; Ford's speeches have emphasized importance of eliminating many regulations as part of effort to induce business to compete harder and thus reduce costs to customers (M)