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May 10, 1994 SITE NUMBER: CAPPING FILL SYSTEM CONSTRUCTION DETAIL SHEET John Davidson 94-01621 Your site has been found suitable for a CAPPING FILL ALTERNATIVE SEWAGE DISPOSAL SYSTEM. The following construction specifications shall apply to the installation of your septic system. 1. The septic tank shall have a minimum liquid capacity of 1000 gallons. The projected daily sewage flow for this project is calculated at 450 q~llons Der day. Based on soil conditions observed on this site, the disposal field will be sized at 150 lineal feet Der 150 qallons of projected daily sewage flow. A minimum of 450 lineal feet of disposal field will be required for your proposed develop- ment. The disposal trenches are constructed two (2) feet wide and on minimum ten (10) foot centers and with no line exceeding 125 feet in length. The trenches and perforated pipe are installed level (~1") and contoured to follow the natural ground surface. The disposal field shall be constructed with s~i~l distribution with a minimum trench depth of 12 inches and a maximum trench depth of 18 inches. The capping fill material must be inspected and approved prior to placement. The fill shall be of the same textural class, or one class finer, than the native topsoil. The disposal field area must be scarified to destroy any vegetative mat on the surface. Fill material shall be evenly graded to a final depth of sixteen (16) inches over the gravel. Ca in Fill durinq such times ,when our stsff finds soil moisture conditions acceptable. 4. The site must be protected from traffic, livestock, farming or other damaging activities. A groundwater interceptor is required as part of this system. This interceptor trench must be constructed a minimum twelve (12) inches wide by forty-eight (48) inches deep with thirty-six (36) inches of clean gravel placed over a four (4) inch smooth wall perforated pipe. The interceptor must be located at least ten (10) feet upslope from the disposal field and must discharge through a watertight, non-perforated pipe beside or below the disposal field. A separation of 25 feet is required from the septic tank if the tank is located upslope of the groundwater interceptor. This approval is site specific to the area tested and the septic system must be located in the immediate area of the test pits unless otherwise autho- rized by this office. A new site evaluation may be required if the system is proposed for a different area on the property. SPECIAL CONDITIONS: The test pits are located approximately 100 feet from Uhampoeg Road. The septic system must be located between the test pits and the road. THIS IS NOT A PERMIT TO INSTALL THE SEPTIC SYSTEM. BO NOT INSTALL THE SYSTEM VALID PERMIT ~AS BEEN ISSUED BY THIS OFFICE.