Agenda - 11-08-2012 - 5a - Laserfiche WebLink

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15 1 2 Assessment of Septic System Service in the Rogers Road Neighborhood: 3 The County completed a survey of the Rogers Road Neighborhood in February, 2010. The 4 Orange County Health Department, along with RENA, the UNC School of Public Health, and 5 Engineers Without Borders, participated in a survey of wells and septic systems. There were 6 forty-five (45) septic systems included in the survey, and twelve (12) were failing at that time. Of 7 the twelve malfunctioning septic systems, seven (7) were further classified as maintenance- 8 related failures, while five (5) were found to be end-of-life failures. Further investigation 9 revealed that for the five end-of-life failures, there was no suitable soil for an on-site repair. 10 The Environmental Health Department revisited the five properties and discovered that two of 11 the properties are vacant, two are seasonal failures, and one has had patchwork done on it, but 12 not a long-term solution. All of the five septic systems identified would benefit from the 13 installation of a public sewer system. 14 In 2011, Orange County received $75,000 in Community Development Block Grant (CDBG) 15 funds for the infrastructure hookups in the Rogers Road Neighborhood. In order to receive 16 connection, the homes had to be close enough to an existing water and/or sewer line so that no 17 extension of service lines would be required for connection. Additionally, homeowners had to 18 meet certain income eligibility requirements. There have been five homes connected to Orange 19 Water and Sewer Authority) OWASA sewer as a result of this grant. 20 21 22 OWASA Sewer Concept Plan: 23 OWASA is the water & sewer utility for the area and as such, it investigated the concept of 24 providing sewer service as part of the Town of Chapel Hill's Rogers Road Small Area Plan. On 25 February 8, 2011 OWASA provided an updated concept plan and cost estimate for the Rogers 26 Road Small Area Plan Study Area for $3.4 million. This early concept plan was completed 27 based on the Chapel Hill Small Area Plan which is a geographically different area than the 28 Historic Rogers Road Neighborhood sewer concept. There is also some difference in routing 29 some of the main outfalls. In the current estimate, OWASA needed to avoid the area of 30 contamination coming out from the Carrboro section that required more line with deeper 31 excavation. Most importantly, in the earlier estimates the availabilities fees were not included or 32 the cost of extending a lateral from the main line to the property 33 On May 16, 2012 OWASA staff provided a concept plan, layout, and cost estimate for providing 34 sewer service to the area that was delineated by the Historic Rogers Road Neighborhood Task 35 Force at the April 30, 2012 meeting. The concept plan is the most efficient way to serve the 36 defined Rogers Road Neighborhood and does not consider adjoining neighborhoods. All the 37 green areas show where sewer service is already available. The dark green areas are parcels 38 that have connected to the OWASA service. The light green areas have not connected. The 39 86 parcels in yellow are the properties that would be served by the conceptual sewer layout. 40 The concept map also breaks down the sewer service into 8 sub-areas with the number of 41 parcels served and cost per parcel. The 8 red lines represent the possible sub-areas of the 42 sewer infrastructure that could be considered, if the entire concept project is not feasible. The 43 sewer infrastructure routing was estimated based on the topography taken from maps rather 44 than from any field work. In order to get to a greater level of detail or certainty on the cost, 45 some field work would be required. There are two brown areas on the map that the County has 46 identified as some subsurface disposal or some suspected contamination. Without any further 47 investigation, the sewer line has been routed no closer than 100 feet of that margin. 48 49 The total construction and installation cost for the concept level sewer is approximately $5.8 50 million. It would serve 86 additional parcels of land. The concept costs include construction,