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Page 2 <br /> determine if another application will be required. Once the necessary coverage on all targeted plants has <br /> been established, there will be a 2 year monitoring period. The 2 year waiting time will ensure all of the <br /> root system has been adequately effected preventing the current plants will not grow back. <br /> The larger trees will be cut down and the smaller ones will be mowed or mulched. Mowing and chemical <br /> control will be used as future control for the tamarisk.Mowing will be done as needed to prevent new <br /> growth and spraying will be done as needed once control of the site has been achieved. <br /> We have discussed our plan with Tina Travis at the El Paso County Extension on 4-16-18. She agreed <br /> with our plan for a 2 year monitoring period after spraying,then commence mowing or cutting. She also <br /> mentioned we could plant Cotton Woods or Willow Whips to help take over the area which could help <br /> prevent a re-invasion of the tamarisk. <br /> Please see attached documentation for what has been done so far and chemical control documentation. <br /> Please see Attachment labeled(Problem 2 Response). <br /> Problem/possible violation No.3: <br /> Both entrance signs have been replaced with new ones displaying our updated company name, a <br /> statement regarding current reclamation activities, and the permit number.Please see Attachment labeled <br /> (Problem 3 Response). <br /> Observations: <br /> Availability of Records: Kiewit recognized that the original 2017 annual report was submitted without the <br /> map and signature. A follow up email was sent with the Map and signature page on November 30, 2017. <br /> Please see Attachment labeled(Observation 1 Response) <br /> Sincerely, <br /> Kiewit Infrastructure Co. <br /> Mark . Campbel <br /> Assistant Secretary <br /> Cc: Job Office <br /> Mike McDonald <br /> Mark P. Campbell <br /> Jenn Bradtmueller <br /> Kiewit Infrastructure Co. <br /> 160 Inverness Drive W. Suite 110 <br /> Englewood,CO 80112 <br /> (303)979-9330 Phone(303)973-1576 FAX An Equal Opportunity Employer <br />