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Sorenson, Allen From: Sorenson, Allen Sent: Tuesday, October 29, 2002 12:58 PM To: Crosby, Erica Subject: RE: Henderson Bond W e will continue to bond for sludge and chips at the mine; Carl's comments were focussed on the mill. Here is the suggestion I will make to Henderson for incorporation into TR-12: Actual fertilization at the time of reclamation will be based on the results of soil testing. The assumption for the purpose of bonding will be 1000 pounds per acre 18-46-0 over the entire acreage to be seeded then two subsequent applications over 50 percent of the acreage of 18-46-0 at 500 pounds per acre. -----Original Message----- From: Crosby, Erica Sent: Monday, October 28, 2002 2:15 PM To: Sorenson, Allen Cc: Mount, Carl Subject: FW: Henderson Bond Allen, when you talk to Anne about the trees & shrubs, can you mention Carl's fertilizer suggestion noted below? It would need to be added to their response in TR-12. Also....what does this mean for the sewage sludge & wood chip commitment that we have bonded for? -Erica -----Original Message----- From: Mount, Carl Sent: Monday, October 28, 2002 1:34 PM To: Sorenson, Allen Cc: Crosby, Erica Subject: RE: Henderson Bond I suspect that the need for potassium at this site would be obviated by the nature of the feldspar containing rock matrix trom which the tails derive. I would suggest that the operator use approximately 1000 pounds of 18-46-0 as a single application to start with and apply subsequent fertilization only as needed (In other words, use on areas that are showing vegetation failure or inadequate vegetation success). Alternately, we would prefer that sewage sludge and wood chips be used but I'm not sure that we would want to bond for doing this. This method of soiV building and fertilization is much preferable because it provides a method to store organic compounds and provide better nutrient cycling that would enhance plant growth. Carl -----Original Message----- From: Sorenson, Allen Sent: Wednesday, October 23, 2002 12:39 PM To: Crosby, Erica Cc: Mount, Cad Subject: RE: Henderson Bond I am not a fertilizer expert, and will defer to Specialist Mount's superior wisdom. However, Specialist Mount, I want to make sure you have all the facts. One of the fertilization methods used at Climax, and included in the reclamation plans for both Climax and Henderson, is to apply potassium and phosphorus at the time of initial seeding, and then to apply nitrogen in the two or three growing seasons following initial seeding. How about suggesting the following to Henderson for inclusion into the pending TR: Conduct soil testing of each distinct area to be vegetated and apply potassium and phosphorus only as needed at the time of seeding. In following growing seasons, apply nitrogen as maintenance fertilization. By distinct areas to be vegetated, I mean that at least one soil test must be conducted on each distinct type of plant growth media to be seeded. My questions to you Carl are: Is this a good plan, or are you satisfied with one initial application and no follow-up or maintenance fertilization?