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12 <br />It should be noted that all lots having aconventional-type drain field with pump are reviewed at a minimum of every five years by the <br />health department as required by 15 A NCAC 18A .1961 (Maintenance of Sewage Systems). <br />Ultra Shallow Trench Conventional Systems are placed in areas with 24 inches or more of provisionally suitable characteristics and a i <br />inch soil cap is placed over the trenches. <br />Shallow Trench Conventional Systems are placed in areas with 30 inches or more of provisionally suitable characteristics. <br />Conventional Systems are placed in areas with 36 inches or more of provisionally suitable characteristics. <br />The approved septic areas should be kept free of vehicular traffic, logging, grading and compacting activities. We recommend that the <br />septic areas be raped or fenced during road and home construction to minimize soil disturbance. <br />This report is for planning purposes only and does not constitute any approval. Lot approval is granted only in the form of an Improve <br />Permit. <br />