Agenda - 09-12-2006-9d - Laserfiche WebLink

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~~7 6, Review layout f'or Lots 1 and 2 and proximity of septic systems to stream, Applicatzf's Response: We actually have some questions regazding the criteria used to identify these drainage areas as "streams and/or water features" by a former staff member of the Orange County Erosion Control Division, particularly since the 100- foot buffer (a 200-foot corridor) is applied equally to all features irregazdless of its nature (ephemeral, intermittent or perennial), However, to this point in time, we have dutifully surveyed the flags that were placed in the field and represent these features and the required 100-foot buffer at this time, With this background however, we would like to note that our site visits and field surveys clearly indicate that these drainage areas on Lots 1 and 2 aze best described as ephemeral in nature rather than as intermittent or perennial streams. In other words, these features do not have standing water and/or exhibit the stream-like characteristics that are associated with intermittent or perennial streams.. With regard to the proposed location of septic systems on Lots 1 and 2 with relation to this ephemeral feature, we provide the following additional information: Lot 1: The house will be located between the ephemeral feature and Westhampton Way, while the septic field will be located on the other side of the ephemeral feature. In particulaz, the septic field will be located a minimum of I50 feet away from the centerline of this drainageway, providing an additional 50 feet of buffer to the regulated 100-foot buffer. A pump system will be used to transfer wastewater from the house to the septic field. Lot 2: The house and the septic field are both proposed to be located on the west side of the depicted ephemeral feature, The septic field will be located a minimum of 125 feet away from the centerline of this drainageway, providing an additional 25 feet of buffer to the regulated 100-foot buffer. In surmnary, based on the minimum distances between these septic fields and the ephemeral feature, and the mostly-dry nature of this drainageway, we do not believe that these septic systems will pose a threat to the quality of water traveling in this channel during rain events. 7, Concern was expressed regarding the impervious surface levels for larger homes and garages within Westhampton as compared with existing smaller homes within Robins Wood. Applicant's Response: Being located in the University Lake protected watershed, this development is limited to a maximum of six (6%) percent impervious surface. In t4~es0~mnpton -Response to StaffConmaents A4arch 22, 2006 Pao e 3 of 4