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2 Salt storage at commercial, industrial, and institutional facilities According to section 18.6 of the MS4 General Permit, permit holders must require proper salt storage at commercial, institutional, and non-NPDES permitted industrial facilities. Runoff from salt piles can increase the chloride concentration in the water supply, leading to toxic conditions for the local ecosystem. Sodium from salt piles can compromise nearby soil structures, reducing its water retention capacity and increasing the probability of erosion. The creation of a new section within the City Code is proposed to include the MS4 salt storage requirements. This section, titled Salt Storage at Commercial, Industrial, and Institutional Facilities, is numbered 90-182 and located underneath the Environmental Protection article of the Zoning and Land Use chapter. The proposed section has three major additions. First, deicing materials must be stored indoors if possible and be on an impervious surface. If stored outdoors, a permanent roof or impermeable cover must be placed over the pile. Second, salt storage facilities must be in close proximity to its use, and be away from salt-vulnerable natural areas. Third, practices must be implemented to prevent exposure when transferring salt piles. A definitions list is included at the beginning to improve clarity. These provisions are intended to decrease salt collection from runoff to reduce its impact on the local ecosystem. 3. STAFF RECOMMENDATION: Staff recommends approval of the proposed amendments to Sections 10-1, 10-38 and 10-39 of the City Code related to the proper removal and disposal of animal waste and the proposed amendments to Section 90-182 of the City Code related to salt storage at commercial, industrial, and institutional facilities. Staff recommends the Planning Commission open and hold a public hearing and take any and all comments. Attachments: 1. Ordinance 2023-520 2. Ordinance 2023-521 3. 2020 MS4 General Permit requirements