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Systems with Pressure Distribution <br /> In addition to all the items previously covered in the gravity flow list, the following items must be <br /> verified during the final inspection of an Eljen GSF System when used with pressure distribution: <br /> 1) Verify the low-pressure pipe has at least one 1/4-inch-diameter drain <br /> hole at the 6 o'clock position for each lateral. <br /> 2) Verify the low-pressure pipe orifices are at the 12 o'clock position. <br /> 3) Verify the 4-inch perforated pipe has holes at the 4 and 8 o'clock <br /> positions. <br /> 4) Perform pressure check. <br /> 5) Verify there is 3:1 approved sand slope on all sides. <br /> 6) Verify the cover meets the requirements of the regulations. <br /> 7) Verify the inclusion of lateral end cleanout. <br /> ell M�-7 <br /> CORPORATION <br />