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Permit Number: 555-19-006943-PRMT Date: Se'EXPIRED <br /> tember 24 2019 <br /> Project Address: Evans Valley NE,Silverton 061 E P I R E <br /> 061E30-01300 <br /> Completed By: Kim Aldrich,WWS <br /> SEPTIC SYSTEM MAJOR ALTERATION <br /> sources. The areas of the initial Y <br /> septic system and the future repair system must both <br /> P Y P <br /> be protected. <br /> MAINTAIN PERMANENT ACCESS to septic tank for pumping and service. The septic <br /> tank should be pumped and inspected by a licensed septic tank pumping service before <br /> sludge and scum accumulations reach 30% of the tank liquid operating volume. <br /> Pumping every 3 to 5 years is an average interval. The septic tank is a reservoir for <br /> the solid materials in the sewage waste stream. Excessive accumulation of these solid <br /> materials in the septic tank will cause the solids to wash out of the tank and into the <br /> drainfield. This will cause irreversible damage to the drainfield and will eventually lead <br /> to a system failure. <br />