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Septic Site Evaluation 555-19-003739-EVAL Page 3 of 5
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<br /> General Description of Site-Evaluations -
<br /> Sewage contains disease-causing organisms and other pollutants that can cause adverse impacts to human health and the
<br /> environment. An onsite sewage disposal system must treat and dispose of sewage in a way that will not cause a public
<br /> — health hazard, contaminate drinking water supplies; or pollute public waters
<br /> Proper treatment in an onsite system begins with primary treatment in the septic tank. The septic tank separates the solid
<br /> particles in sewage from the liquid. The liquid that comes out of the septic tank is called effluent. The effluent may then be
<br /> dispersed in the soil for further treatment or discharged into a secondary treatment device such as a sand or gravel filter or
<br /> other alternative treatment unit prior to dispersal in the soil. For proper treatment,the effluent must slowly infiltrate into the
<br /> underlying soil. Dissolved wastes and bacteria in the effluent are trapped or adsorbed to soil particles or decomposed by
<br /> microorganisms. This process removes disease-causing organisms, organic matter,and most nutrients. Effluent that
<br /> comes to the ground surface(through poor soils or other problems with the system)can be a possible health hazard
<br /> because it may still contain some disease-causing organisms. Soil that drains too quickly may not give the effluent enough •
<br /> treatment and may result in groundwater contamination.
<br /> The purpose of the evaluation is to locate suitable soils in an area that is large enough for both the initial drainfield area and
<br /> the replacement drainfield area. The criteria used for this site evaluation can be found in Oregon Administrative Rules
<br /> (OAR)340-071.
<br /> In the site inspection,the following features are evaluated:
<br /> • Soil types-how well they drain and other indicators of good soil structure for treatment
<br /> • Depth to evidence of groundwater
<br /> • Wells located on the site or adjacent sites
<br /> • Slopes,escarpments,ground surface variations,topography
<br /> • Creeks or springs on the site or adjacent properties
<br /> • Whether the soils have been disturbed
<br /> • Setbacks from property lines,buildings,water lines, and other utilities
<br /> • Other site features that could affect the placement of your onsite system
<br /> Approved Area&System Type
<br /> Soil test pits and other site features were evaluated during the site visit on May 29,2019. The conditions observed during.
<br /> this site evaluation indicate that the area around the test pits is capable of supporting a STANDARD SEPTIC SYSTEM for
<br /> the INITIAL and REPAIR systems, if the repair system can be placed within the designated area. Please refer to the signed
<br /> approved site plan dated June 20,2019.
<br /> Specific Requirements
<br /> Please refer to the Site Evaluation Worksheet which shows the approved areas and other details of the site visit.
<br /> DRY SOIL CONDITIONS ARE REQUIRED FOR INSTALLATION(March 1 —October 31).The geographical area in which
<br /> the property lies is considered a risk to installation during winter months. Soil moisture conditions generally preclude
<br /> construction of the drainfield in the winter months.
<br /> A DUPLEX PUMPING SYSTEM IS REQUIRED FOR ANY COMMERCIAL FACILITY OVER 600 GALLONS PER
<br /> DAY.Detailed instructions for dosing tank/effluent pump installations are available in our office.The electrical wiring to the
<br /> pump and alarm in the dosing tank,the wiring in the trench and the connections in the structure must be done under a
<br /> Marion County Electrical Permit
<br /> A DETAILED SEPTIC SYSTEM STAKEOUT OF THE INITIAL SYSTEM IS REQUIRED prior to the issuance of a septic
<br /> system installation permit. A scale drawn, detailed site plan must be submitted with the application for the installation
<br /> permit. The stakeout must be inspected on the roe and approved before the permit can be issued. Instructions for the
<br /> P property rtY PP
<br /> stakeout are attached and are available in our office.
<br /> Additional Conditions of Site Approval
<br /> 1. This site is approved for the type of disposal system described above.This approval is for a system designed to serve a
<br /> Tasting room and event facility. Peak sewage flow into the system is limited to a maximum of 1275 gallons per day,with an
<br /> average sewage flow of not more than 637 gallons per day. Please see the detailed field sheet and flow estimation
<br /> worksheet for further detail. Premature failure of the treatment system may occur if either of these flow quantities is
<br /> CALL BEFORE YOU DIG...ITS THE LAW
<br /> ATTENTION:Oregon law requires you to follow rules adopted by the Oregon Utility Notification Center. Those rules are set forth by Oregon Administration Rules. You may obtain
<br /> copies of the rules by calling the center.(Note:The telephone number for the Oregon Utility Notification Center is 1-800-332-2344.)
<br /> 6/21/19:11:39:41AM • Page 3 of 5 ONS_OnsiteEvaluation_pr
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