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Rationale for Approval Recommendation Page 7 Delta Paving Gravel Pit File No. M-98-105 April 7, 1999 See response under item 4a above. The application indicates that topsoil is not available from the Phase II area for reclamation purposes. Additionally, the applicant has indicated that topsoil importation and replacement at the Phase II area may conflict with federal law, for operations not permitted under a 404 permit. The applicant has committed to revegetation of the Phase II area by transplanting Cottonwood tree and Willow tublings. The proposed reclamation for the Phase II area supports the post mining land use and satisfies the requirements of the Act and Rules. Rule 3.1.10(6) requires that operators employ weed control methods for all prohibited noxious weed species, and whenever invasion of a reclaimed area by other weed species seriously threatens the continued development of the desired vegetation. Weed control methods shall also be used whenever the inhabitation of the reclaimed area by weeds threaten further spread of serious weed pests to nearby areas. k. The proposed reclamation plan is not en adequate replacement for the existing riparian wildlife habitat. Goal of reclamation p/an should be the comp/ete restoration of wetlands habitat. IWSERCI The reclamation plan, proposed in the application, satisfies the minimum requirements of the Act and Rules. Additionally, Division of Wildlife comments, submitted as part of Exhibit H of the application, indicate that the reclamation plan is appropriate to the site. /. Reclamation p/an design team show/d inc/ude environments/ engineer, biologist end ecologist trained in habitat rep/acemenf and should utilize Confluence Park as a model /WSERC/ See response under item 4k above. m. Topsoil should be rep/aced at 8"-12" depth /Delta SCDI The application commits to topsoil replacement at approximately 6" depth. Topsoil replacement will occur for portions of the pond inslopes located above the expected water line, and for portions of the stockpile area to be reclaimed to support wildlife habitat. The materials immediately underlying the topsoil layer will consist primarily of alluvial materials, rejected overburden and processing fines which appear capable of supporting vegetation. Under such conditions, topsoil replacement at 6" depth is appropriate for the post mining land use and satisfies the minimum requirements of the Act and Rules. n. Reclamation seeding should occur per NRCS recommendations which inc/udes Tall wheatgrass, Western wheafgrass, Crested wheatgrass, A/fa/fa, /ndian ricegrass, Ga/letta, Ye/%w sweet c%ver, and fertilizer and mulch. /Delta SCD) Revegetation mix proposed by the applicant consist of Sand dropseed, Blue grams, Indian ricegrass, Galletta, Sainfoin, Cottonwood tree and Willow tublings, and fertilizer and mulch. The revegetation mix proposed by the applicant appears capable of satisfying the performance standards of Rule 3.1.10, and satisfies the minimum requirements of the Act and Rules.