RE: request for and council action/remove from sewer project

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� . � TO: Greg Gappa, Public Services Director FROM: Stephen Weckman, On-Site Systems Manager DATE: August 18, 1998 RE: Request for exclusion from municipal sewer project,Jorgen Viltift-1155 Heritage Lane As per your request, the City performed a review of your septic system to determine whether you are eligible to be exempted from connecting to the Municipal Sewer at this time. In order to be exempted from connection at this time, we needed to show that the septic system meets a three foot separation to the seasonal water table, the septic tanks have bottoms, and the system is of adequate size for the dwelling. Several soil borings were performed in vicinity of the drainfield to determine the depth to the seasonal water table. Due to gravelly soils and the fill soils near the drainfield, only two borings reached a depth of seven feet (three feet below the drainfield). One boring was located in fill soils and was not used to identify the depth to the seasonal water table. The remaining soil boring showed no evidence of a seasonal water table. Inspection of the septic system revealed that the system is of adequate size and the tanks are of suitable construction to remain in use. The tanks have bottoms and are therefore not considered to be cesspools. The septic system inventory information indicates that 600 square feet of drainfield area was installed in 1969. Also, a typical 1969 septic system installation would have twelve inches of rock under the distribution pipe. A five bedroom dwelling would then require 500 square feet of drainfield area to be of adequate size in the sandy soils. Based on this site inspection, your residence does meet the conditions necessary for exclusion from municipal sewer connection at this time. The septic system may or may not meet all current codes, but is compliant and of adequate size for its current usage. If the system becomes non-compliant due to surface discharge or future changes in the septic system regulations, the residence will be required to make connection to municipal sewer. Any changes in the size or usage of the residence that would require addition or alteration of the septic system must instead be connected to municipal sewer.