04-22-1981 Council Agenda - Laserfiche WebLink

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APPENDIX 1 Gervais Shores 4/1/81 The erosion potential of the fill material is high due to its steep slopes and lack of cover. Before any cover is applied to the fill material, the surfaces should be smoothed to prevent runoff from concentrating as it flaws down the slope. If vegetation is to be established, a seedbed Heist be prepared. Final slope faces should not exceed 5070 (2:1). A temporary cover of straw mulch should be applied inrediately at the rate of 3500 lbs /acre If permanent vegetation cannot be established within 60 days, a temporary seeding should be applied prior to mulching as follows: Early spring to July 1: July 1 to October 15: October 15 thru winter: 12 bu /acre oats 12 bu /acre rye use mulch Permanent vegetation may be established by seeding or sodding. Arens where overland flow exceeds 3 fps should be sodded immediately after final grading is complete. The sod should be laid at right angles to the slope and staked. On slopes over 25 %, the sod may be covered with jute mesh and pegged down to hold the sod securely. Where seeding is done a suitable mixture for the conditions encountered and the uses anticipated may be selected fLom the table attached. It is recommended that topsoil be applied to areas where the sandy subsoils become exposed. Fertilizer should be applied per soil test. Mulch must be applied to either temporary or permanent seedings. The mulch can be straw, applied at the rate of 3000 -4000 lbs /acre (70 -80 bales /acre), or long fibered wood cellulose applied at the rate of 2500 lbs /acre. The straw mulch can be anchored by pressing it in with a straight set blunt disc or by covering with a netting and stapling. The long fibered wood cellulose comes in rolled blankets with netting. The blankets are rolled out and stapled. Netting should be placed over any straw mulch placed on the fill slopes and stapled. If we can provide assistance during application of these measures, please call; the office phone is 777 -0127.