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<br />Intermediate wheatgrass Rush, Oahe 2.0 <br />Mountain bromegrass Garnet 2.0 <br />Big bluegrass Sherman 0.2 <br />Cicer milkvetch Monarch 0.3 <br />Seeding rates will be 5.9 PLS#/acre if drilled , 11.8 PLS#/acre if broadcast. <br />7. The numerous mine pits exposed throughout this property show little to no <br />overburden and very little soil development in the north portions of the site. Very <br />small volume of overburden is expected to be encountered in the northern portion <br />of the operation. If overburden is found while mining the areas north of the <br />drainage swale, it will be stockpiled, graded and re-vegetated until future use. <br />Salvaged overburden materials will be placed in stockpiles along the western <br />boundary of the permit area and graded to slopes no greater than 3:1. Overburden <br />material will be protected from erosion by contour furrowing and application of <br />the site seed mix and mulch to promote seed germination. While the south and <br />southeastern aspect of the pit may hold some potential for incursion of <br />overburden, at that point in mine development there will be ample area for storage <br />of overburden on the mined pit floor north of the swale, or overburden can be <br />direct applied to backfilled pit areas north of the drainage swale. If overburden <br />materials are encountered during mining of either phase one area north of the <br />drainage swale or phase two south of the swale, it will be retained for placement <br />on top of bedrock used for backfilling the mine benches. If available, overburden <br />will be placed at no less than 6" of depth, if available, over bedrock materials <br />prior to topsoil application. <br />8. Blasting Comments <br />a) Proximity of Houses-two residents are less than 1000 feet from the permit <br />boundary. These residents will be approached to see if they are interested in pre- <br />blast surveys. Seifert will send a letter to residents living less than one quarter <br />mile from the proposed mine site requesting their interest in having a pre-blast <br />survey performed. <br />b) Seifert Enterprises, LLC, agrees to not exceed a peak particle vibration velocity of <br />.5ft/second from any single blast event. This will be accomplished by adherence <br />to a blasting control plan that considers the maximum pounds of explosives <br />allowed to be detonated per delay sequence based on rock and site parameters and <br />evidenced by size and location of drill holes that facilitate explosive placement. <br />Each drill pattern will be laid out by qualified drill/blast specialists tasked with <br />insuring that the result of blasting will be efficient and least impact to the <br />surrounding area. Blasting will be performed by licensed personnel including <br />third party recording of each blast event. <br />c) Seifert agrees to keep records of all blasting events, including location of blast <br />monitors. A Blast Monitoring Plan for this site will include: A complete log of <br />all blasting events, drill hole pattern document verifying depth and drill hole <br />