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4. Undercround Fuel or Chemical Tanks. There shall be no underground <br /> fuel or chemical storage tanks allowed within either the Water <br /> Quality Critical Area or the Limited Industrial Area. For the pur- <br /> poses this section, underground refers to the burial of such tanks <br /> below the surface of the ground or the covering of them by a berm <br /> built above grade. Spill containment measures ( i .e. dikes , double <br /> lined tanks, etc. ) must be taken for any fuel or chemical tank. <br /> G. Sewer Service Limitations. Several limitations on sewer service and <br /> wastewater treatment facilities are imposed within the Critical Watershed <br /> District in order to prevent discharges of untreated or inadequately <br /> treated wastewater into the water supply, and to prevent dense urban <br /> development atterns f encroaching into the District, creating risks <br /> of stormwater runoff contamination. Those limitations and restrictions <br /> are described below. <br /> 1 . Water Quality Critical =,reas. The following sewer facilities <br /> restrictions shall apply within the Water Quality Critical Area <br /> portion of the District. <br /> a. Wastewater Treatment Facilities. No new public or private <br /> wastewater treatment plants or community sewage treatment <br /> facilities of any kind shall be allowed. <br /> b. Sewer S ery i ce. No private sewer l i nes sha l l be a l lowed <br /> inside the Water Quality Critical Ar ea. N o pub lic se er <br /> lines or outfa . l v s he i l he allowed unless gravity flow is <br /> provided point oint outside the 'Water Quality Critical Area <br /> nd the first one inch of stormwater runoff from impervious <br /> surfaces within the area served by the sewer lines is infil- <br /> trated or retained. Sewer lines shall conform to standards <br /> and specifications as set forth by the City Engineer for the <br /> Water Quality Critical Area. <br /> 2. Limited Industrial Areas. The following sewer facilities restriction: <br /> shall apply within the Limited Industrial Area portion of the Districts. <br /> a. Wastewater Treatment Facilities. No privately owned discnar_- <br /> ing wastewater treatment facilities shall be allowed within <br /> the Limited Industrial Area, and no expansions of existing <br /> private discrercing wastewater treatment facilities shall be <br /> allowed. <br /> b. Industrial Pretreatment Plants. Pretreatment facilities for <br /> use by industrial firms to prepare wastewater for discharge <br /> into the public wastewater collection or treatment system shall <br /> be allowed within the Limited industrial Area. <br /> -6- <br />