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July 11, 1994 <br /> <br />APPLICANT: <br />SITE NUMBER~ <br /> <br /> STANDARD SYSTEM CONSTRUCTION DETAIL SHEET <br /> <br />RICK GONES, G.R.I., SANTIAM REALTY <br />94-2159, NE P/O T/L 3400, 1.5 ACP~S. <br /> <br /> Your site has been found suitable for a STANDARD ON-SITE SEWAGE DISPOSAL <br />SYSTEM. The following construction specifications shall apply to the installa- <br />tion of your septic system. <br /> <br />The septic tank shall have a minimum liquid capacity of 1000 <br />gallons. <br /> <br />The projected daily sewage flow for this project is calculated at <br />450 qallons per day. Based on soil conditions observed on this <br />site, the disposal field will be sized at 150 lineal feet Der 150 <br />qallons of projected daily sewage flow. A minimum of 450 lineal <br />feet of disposal field will be required for your proposed develop- <br />ment. The disposal trenches are constructed two (2) feet wide and <br />on minimum ten (10) foot centers and with no line exceeding 125 <br />feet in length. The trenches and perforated pipe are installed <br />level (~1") and contoured to follow the natural ground surface. <br /> <br />The disposal field shall be constructed with serial distribution <br />with a minimum trench depth of 24 inches and a maximum trench <br />depth of 24 inches. There must be at least 12 inches of backfill <br />over the top of the gravel, measured from the natural ground <br />surface. <br /> <br /> A groundwater interceptor is required as part of this system. This <br />interceptor trench must be constructed a minimum twelve (12) inches wide by 48 <br />inches deep with 40 inches of clean gravel placed over a four (4) inch smooth <br />wall perforated pipe. The interceptor must be located at least ten (10) feet <br />upslope from the disposal field and must discharge through a watertight, non- <br />perforated pipe beside or below the disposal field. A separation of 25 feet is <br />required from the septic tank if the tank is located upslope of the groundwa- <br />ter interceptor. <br /> <br /> An effluent lift pump may be necessary to construct the disposal field <br />in the approved area and at the correct depth. <br /> <br /> This approval is site specific to the area tested and the septic system <br />must be located in the immediate area of the test pits unless otherwise autho- <br />rized by this office. A new site evaluation may be required if the system is <br />proposed for a different area on the property. <br /> <br />SPECIAL CONDITIONS: <br /> Construct the drainfields as far upslope as possible within the south- <br /> westerly part of the property. Avoid the concave land-form and associat- <br /> ed drainage swale. A pre-permit field stakeout will be necessary to <br /> establish the locations and elevations of the individual drainfield <br /> lines for both systems. Refer to the enclosed stakeout procedure and the <br /> setback list for details to complete the stakeout. Defer any excavation <br /> and siting all wells until the drainfield sites are confirmed. Use care <br /> not to alter the natural topsoil prior to drainfield installation. <br /> Drainfield construction should be limited to the dry-soil summer season <br /> to avoid excessive soil compaction. <br /> <br />THIS IS NOT A PERMIT TO INSTALL TEE SEPTIC SYSTEM. DO NOT INSTALL THE SYSTEM <br />UNTIL A VALID PERMIT HAS BEEN ISSUED BY THIS OFFICE. <br /> <br /> <br />