Agenda - 02-21-2006-10b - Laserfiche WebLink

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Paul Thames- Re. Orange County - Buckhom Project Page 1 From: Cecil G Madden To: Paul Thames Date: 2/20/2006 4:31:27 PM Subject: Re: Orange County - Buckhorn Project Hello Paul, I have reviewed your letter dated February 17, 2006. With regards to the capacity of Mebane's existing infrastructure I offer the following points 1. We are not concerned about how Mebane resolves the capacity of the downstream gravity sewer, The 8-inch force main can be extended down to the existing t2-inch gravity sewer or the 8-inch gravity can be replaced with a 12-inch gravity sewer It is the City of Mebane's choice. 2. Upon receipt of an engineering report that justifies the flows and the firm pumping capacity of the Industrial Drive pump station we will review the engineer's justification. The assumptions that you presented are ones that have been discussed, and appear to be plausible; however, we await a complete engineering report that addresses all of the assumptions.. 3. The project which replaces the 8-inch gravity line with an new 12-inch gravity line (or some other method) could be done by the fast track permitting method in the regional office. When this is done the application should indicate zero additional flow will be tributary to the Mebane WWTP. We need a schedule for submitting this application and a schedule for completing the construction. 4 The proposal of reducing the capacity of the L.J. Rogers pump station, as proposed by Darrell Russell, P.E, should be submitted to this office with plans & specifications and a Non Discharge permit application. A copy of the application is attached (Not the Fast track Type). Please provide a schedule for submittal of the plans, specifications, and permit application. We also need a schedule for completing the proposed construction. 5. We are not yet convinced that redirecting the L.J. Rogers pump station force main to the 8-inch Industrial Drive force main will have the desired effect on the capacity of the Industrial Drive pump station. The engineers report must support this proposal. If this is required based on the engineer's report and it is adequately supported, then we suggest that the work related with this be submitted with the L.J.. Rogers pump station work outlined in point 4 above. Again we need schedules for submittal and completion of construction. 6 Our permit for the work south of I-85 will contain a condition that will not allow any flow tributary to these Tines until the construction work outlined in items 3, 4, and 5 are complete and operational, With regards to proceeding with the work south of 1-85 (Proposed to be non funded) 1, Revised plans & specifications must be provided with written responses to all questions raised to date. Once we are satisfied that our concerns have been adequately addressed you will be allowed to proceed with the advertisement based on a phone call from our office. We will at that point be drafting the City's permit. You need the permit prior to awarding the construction contract, 2 We trust that the remainder of the work North of I-85 and Efland (which is to be funded with the STAG grant) is to be handled like a typical STAG Grant Project. We await responses to all previously raised comments and look forward to your project South of I-85 moving forward in the near future. Please call if you have questions at (919) 715-6203. Regards, Cecil G. Madden, Jr, P.E. Supervisor