ORD-2014-021 Buckhorn-Mebane EDD Phase 2 Sewer Extension – Amendment of Design Contract and Approval of Budget Amendment #7-C

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'Za/4.-x7 T1aA0.AJ,�'c� Hobbs Upchurch Associates engineering I planning I surveying April 22, 2014 Orange County — Planning and Inspections Department ATTN: Mr. R. Kevin Lindley, P.E. 133 W. Margaret Lane Hillsborough, NC 27278 RE: Buckhorn — Mebane Economic Development District — Phase II Professional Engineering Services - Contract Amendment #2A (REVISED LETTER) (HUA Project Number: OC1202) Dear Kevin: This letter herewith is provided to serve as Contract Amendment #2A to the Original 2010 Contract for the project identified as Buckhorn - Mebane Economic Development District (EDD) — Phase II. This letter will summarize the original project scope as well as delineate the items to be covered by this amendment to the original project scope and original contract. Original 2010 Contract Hobbs, Upchurch & Associates, P.A. (HUA) and Orange County entered into a contract dated November 4, 2010 to provide surveying, engineering design, and permitting for the project identified as Buckhorn - Mebane Economic Development District (EDD) — Phase II. Note that the "Efland Extension" to Buckhorn — Mebane EDD — Phase II was added later as part of Contract Amendment #2. Original Proiect Scope In general terms, the original project was designed to collect sewage from the area / unincorporated community known as Efland. Currently, the majority of Efland's sewer is collected at a pump station on Brookhollow Road and pumps toward Hillsborough along Oak Street and the project would have picked up the forcemain on Oak Street and redirect it towards Mebane. This forcemain would then have connected to a small gravity sewer project in the northwestern interchange of 1-40 / 1 -85 and Mt. Willing Road. The project included a pump station on the north side of 1-40 /1-85 at the low area, 1,500 LF west of this interchange. From this pump station, effluent from the unincorporated community of Efland and adjacent additional gravity sewer area would have been pumped to the Gravelly Hill Pump Station and on into the City of Mebane. Also, HUA looked at additional pump stations in this eastern portion of the Buckhorn - Mebane EDD. This area was identified on the original area map (See also Exhibit A: Figure 1, as attached) as Areas D -2, D -3, D-4 and all of E. Amended Proiect Scope Following several meetings with the County staff, the City of Mebane and the new HUA project team, the best solution was identified as the "West Ten Road Pump Station" project. This revised project includes all the original sewer improvements and combines two pump stations into one on West Ten Road (adjacent to an unnamed tributary of Seven Mile Creek which runs adjacent to Stephanie Lane, on the north side of West Ten Road). This project adds approximately 4,500 LF of gravity sewer and additional easements. The project also includes gravity sewer east of and past the 1 -40 / Mt. Willing Road interchange through pasture lands opening up 100 acres for future development. This revision also provides a gravity sewer location to the north side of Norfolk Southern Railroad to allow for potential development sewage to be pumped into a gravity manhole north of the railroad. (See also Exhibit B: Figure 2, as attached.) Also, attached, as Exhibit C, is the final Opinion of Probable Cost for the project. Another significant difference between the two projects is the estimated construction cost. The original project was estimated at $2.2 Million with the new and much - improved project scope at $4.8 Million. Although the cost has increased, it resolves the request of the City of Mebane to minimize pump stations and opens up much more developable and usable land area within the Buckhorn — Mebane EDD as well T-910.692.5616 I F:910.692.7342 j 135 W. CONNECTICUT AVE. I SOUTHERN PINES, NC 28387 1 WWW.HCBBSUPCHURCH.00k: SUPERIOR PERFORMANCE THROUGH INNOVATIVE DESIGN