2003-P06371 - new septic - Laserfiche WebLink

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l � � � I invert elevation of the laterals shall be 111.6. Cover laterals with 2" of clean sewer rock. Cover i entire bed area with a non-woven geo-textile fabric that is not so heavy as to prevent good air � exchange. Install a sandy to loamy soil material over the rock bed with a depth of one foot at the �enter of the bed, tapering to six inches at the sides. Install six inches of topsoil over the entire � mound. Establish a vegetative cover over the entire mound. The overall dimensions of the mound will be 83'L x 38'W. � • Supply Line — Install 2" schedule 40 pvc supply pipe from the discharge pipe on the outside of the riser to mound rock bed. Use all high-pressure fittings. J • Header — Install all schedule 40 pvc matenals. Install a header by using three 2' sections of pipe, two 90 degree elbows and three tees. Connect the supply line to a tee just off center of the � header(see drawing detail). Install all high-pressure fittings. • Lateral Network— Install 2" schedule 40 pvc pipe. Install four 61' laterals to the header. Prior � to attaching laterals to the header drill 3/16" diameter orifices into the pipe with the orifices spaced 2.3 feet apart oriented downward. Drill the final orifice on each lateral oriented upward. Insta112" orifice shields to laterals below each orifice including the last upward oriented orifice. � At the end of each lateral connect a 90 degree sweep followed by a 1.5" diameter ball valve. Install a 12" diameter plastic valve box over the ball valve assembly setting the box so the cover will be slightly above the finished grade when the mound is completed. Insta.11 all high-pressure � �ttings. • Control Panel — Install an Orenco System, Inc. control panel model #MVP-S1PTR0 to control � the pump operations on a timed basis (see attached data sheet). Install the contrdl panel in an interior space that will allow the alarin to be heard. Set the pump on/off timers to specifications. ' • Floats — Install Orenco mercury float assembly MF3A or equivalent for high-level alarm/timer override, timer on, and redundant off floats. Attach floats to float assembly bracket spacing � floats as shown in drawing. Install float and pump wires out of the riser through pvc conduit up to a watertight splice box mounted on a post. Seal both ends of the conduit. � 7. Limitations - Our investigation, layout, design, and recommendations are based on data submitted. If conditions considerably different from those described in this report are encountered, we must be � notified. If proposed construction is changed, we must be notified to evaluate the effect of the changes on the wastewater system. Any changes to the design must be approved by the designer and w�ill be assessed additional design costs. If changes are made to the design without the knowledge � and approval of the designer the design shall be void. All construction is to be in accordance with � 3 �