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Sandy Acres Weed Management Plan <br /> The Sandy Acres site (aka Henderson Development) was used as a gravel pit and <br /> purchased by E-470 after mining operations had ceased. A pond formed because the <br /> floor of the pit was below ground water elevation. In order to comply with Colorado <br /> water law clean fill dirt was placed in the pit to an elevation of four feet above the <br /> ground water level. The backfilling began in 2015 and was completed in the spring of <br /> 2016 and subsequently the area was seeded. In the fall of 2017 soil amendments were <br /> added to areas where vegetation was not established and the whole area was reseeded. <br /> Since the fall of 2017 the grasses have begun to establish but there are numerous areas <br /> where noxious weeds are present. The goal of this plan is to establish desirable <br /> vegetation and control noxious weeds. This plan is based on encouraging the desired <br /> plant species(native grasses)rather than on simply eliminating noxious weeds. The <br /> following sequence will be followed starting in the fall of 2019. <br /> 1) In the fall apply herbicides to control noxious weeds. <br /> 2) In late fall or early spring reseed bare areas. <br /> 3) In early to mid-spring apply herbicides to control noxious weeds. <br /> 4) In late spring to early summer mow the area. <br /> 5) The area will be monitored on a monthly basis for the remainder of the <br /> summer/fall and herbicides will be applied if needed to control the noxious <br /> weeds. <br /> The type of herbicides applied will be based on the type of noxious weed(s) that are <br /> being treated. After the establishment of desired plant species the area will be <br /> managed in accordance with the practices utilized for the rest of E-470 property. <br /> September 2019 <br />