#03 - Legends of Lake Elmo Sketch Plan

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STREETS The street design for the local roads are proposed as 28-ft in width, with concrete curb and gutter. Right of way is proposed as 60-ft in width to allow for adequate room for small utilities and water main. SANITARY SEWER AND TREATMENT SYSTEM The proposed conveyance of sewage is a gravity system that ultimately gets sewage to community septic system located on site map. The septic treatment system will consist of a series of septic tanks to settle out the solids of the sewage, much like a single-family system only larger. The multiple set of tanks will ensure a clear efﬂuent will be sent to ﬁrst a gravel ﬁlter system that will allow an initial biological action to occur removing waste in the efﬂuent. After the gravel ﬁlter the water is then sent to a drain ﬁeld that will allow further biological action to occur and allow natural soil layers to further ﬁlter and clean the water. There are additional controls, chemical treatment and the use of aeration that will also be utilized at the treatment facility to ensure the process meets all current codes for this type of system. WATER MAIN SYSTEM Each of the proposed home sites have been designed to be serviced with city water. The proposed water main system will help to create a looped water system, connecting the 50th Street System to the St. Croix Sanctuary’s system, which will help to improve water quality in the water main line and better ﬂow for ﬁre ﬂow protection to this and area developments. City hydrants will be a part of the water main system and will be spaced according to city and state requirements. EXISTING GAS PIPELINE There is a high-pressure gas main that bisects the parcel and will require permitting for crossing the main for road and for any utilities. We are experienced with this type of crossing and see no issues that would result from the proposed design.