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To: Jeanne A. Mabusth, Building and Zoning Administrator <br /> From: Stephen Weckman, On-Site Systems Manager <br /> Date: September 20, 1993 <br /> Subject: #1862 Three Star Trucking - Septic Review <br /> I have reviewed the proposed septic system testing and design for this property and would <br /> make the following comments. <br /> Lots 1 and 2 <br /> Site evaluation completed in 1991 was approved for a proposed 2 lot subdivision. Both <br /> sites were tested for three-bedroom homes, but topographic information provided as part of this <br /> subdivision indicates that five-bedroom sites are feasible. <br /> Lot 3 <br /> This site was tested in August of 1993 which indicated suitable area for primary and <br /> alternate drainfield sites. The percolation tests averaged approximately 40 minutes per inch and <br /> are within acceptable limits. Site inspection, however, revealed that this site had been driven <br /> over considerably by heavy traffic leaving ruts from 3-12" deep across the drainfield sites. One <br /> or both of these sites may need to be relocated in order to avoid compacted soils. Additional <br /> percolation tests will be required to determine whether the existing sites are still suitable for <br /> sewage treatment. <br /> LotsL4—,-5,6 and 7 <br /> These four lots all have both primary and alternate drainfield sites located on slopes less <br /> than 6% with suitable percolation rates and meet required setback distances. <br /> Lot 8 <br /> This lot contains an existing residence with a septic system. City code requires. that an <br /> alternate drainfield site be located on this parcel for future use. <br /> Summary <br /> Suitable soil testing information has been provided for Lots 1, 2, 4, 5,6 of an alternate <br /> and 7. Further <br /> information is required regarding the compaction of Lot 3 and the identification <br /> site for Lot 8. Based on the above information, I would recommend tabling the application until <br /> the additional soil testing information can be provided. <br /> lsv <br />