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_. <br /> <br />Mr. Larry E. O'Brian -2- April 21, 1983 <br />C. Exhibit E - Reclamation Plan <br />\\~~ Please quote the rule and statute that requires trails to be left on <br />~ qu rry benches. The Division recommends these trails not be left, but reclaimed <br />and seeded. <br />The Soil Conservation Service clearly notes, on Agronorgy Technical Note <br />N~. 48 (revised), dated August, 1976, the broadcasting rate for critical area <br />planting of 80 PLS/square foot. The Division feels this site falls under the <br />critical area planting category, therefore, necessitating a minimum seeding rate <br />of 80 PLS/sq. ft. for broadcasting purposes. <br />Considering the broad spectrum of seeds per square foot that are delivered <br />by your broadcasting machine, the Division hopes it is calibrated to deliver <br />the higher seeding rate so that there is a minimum of 80 PLS/sq. ft. <br />The source cited, Cook, Hyde, and Sims (1974), more specifically states; <br />" .. more critical sites such as west and south slopes should have the quantity <br />of~seeds increased by 50 to 100 percent." Due to the inexpensiveness of <br />seed and the greater potential of seed success when increasing the seed mixture <br />by 100q (as recommended by the SCS), this is the percentage increase the Division <br />recommends. <br />The Division still recommends the larger sized, i.e., 4", wood chips for <br />mu ch purposes. The rationale for this larger size: <br />A. Small sized wood chips cause the tie-up of nitrogen (N) all at one <br />time. This causes tremendous N deficiency problems causing problems <br />with ±he establishment of and/or continued success of the planted species. <br />B. La rye-sized wood chips break down over a very long time. This provides <br />the benefits of a mulch fora long time while maintaining a reasonable <br />carbon:nitrogen ratio. <br />C. A statement in the second paragraph of the response reads: "It appears <br />that stable, 'normal' C/N ratios are only produced when the slow nitrogen <br />cycling processes are established." Utilizing large sized wood chips <br />rather than small sized wood chips would establish this "normal" C/N <br />ratio of slow nitrogen cycling. <br />D. The last paragraph of your response discusses prolonged N immobilization <br />when a large sized wood chip is used. The Division believes it is better <br />to have lonq_-term N immobilization to some extent because this immobilization <br />reduces the amount of N leached from the system. As long as organic <br />material decomposes over a long time, the amount of N being leached from <br />the site is greatly reduced. <br />