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May 25, 2004 <br /> NOA Project Number: E0406 IA <br /> Page 3 <br /> 3.2 Site Septic and Septic Repair Permit History <br /> Files at EHD were reviewed on May 21, 2004 for new and repair permits for septic systems. <br /> Two permits were located for the Site: <br /> Table 1. <br /> On-Site Septic System Permit Summary. <br /> Address,Date Tank Capacity Lines,Length,Pits Comments <br /> 8849 S.Henry,9/25/89 3,000 gallons (4)80-ft leach lines and(4) New installation to three <br /> 36-in diameter by 25-ft deep mobile homes <br /> seepage pits <br /> V <br /> 8849 S.Henry, 5/15/03 (4)60-ft leach lines and(4)in diameter by 25-ft deep <br /> see a e its to re lace existin <br /> The second permit indicates that new leach lines were installed when a land split caused the <br /> original lines to be located on a separate lot from the structures. <br /> 3.4 Existing Septic Tank Usage in the Vicinity <br /> In an attempt to determine the septic system density for the vicinity of the Site, our office <br /> reviewed a 1993 aerial photograph of the subject property available from Microsoft Terraserver. <br /> We counted the building clusters within one square mile of the Site, and made the assumption <br /> that each building cluster has one septic system. Using this method,we determined that there are <br /> a minimum of eight septic systems per square mile in the immediate vicinity of the Site. <br /> 3.5 Septic and Septic Repair Permit History in the Vicinity <br /> t" The following septic system and repair permits were found for the vicinity of the Site during file <br /> review at EHD: <br /> Table 2. <br /> Septic System Vicinity Permit Summary. <br /> Address,Date Tank Capacity Lines,Length,Pits Comments <br /> 7820 S.Henry,2/8/77 1,200 gallons (1)40-ft leach line and(1) New installation to barn. <br /> IOxI Ox10-ft rock-filled sump <br /> r 7700 S.Henry, 10/22/76 1,200 gallons (2)40-ft leach lines and(2) New installation to dairy <br /> 33-in diameter by 25-ft deep <br /> seepage pits <br />