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Narrative for Modification to Existing Conditional Use Permit Application <br /> Proposed CenterPoint Energy Bulk Storage Odorant Tank <br /> Project Summary <br /> CenterPoint Energy is proposing to install and operate a 12,000-gallon bulk storage odorant tank at <br /> its 13.60-acre property located at 7607 173rd Ave NW, Ramsey MN. <br /> Currently Northern Natural Gas (NNG) operates a Town Border Station within the southern and <br /> eastern portion of this property delivering natural gas to CenterPoint Energy and includes fencing <br /> surrounding NNG's facilities. <br /> Adjacent and west of this facility are remaining portions tank foundations and building slabs along <br /> with CenterPoint Energy fencing that previously limited access to a CenterPoint Energy Peak <br /> Shaving Plant. CenterPoint Energy ceased operations of the Peak Shaving Plant in 2003. <br /> CenterPoint Energy intends to remove all existing fencing not associated with the NNG facility and <br /> remove any remaining concrete footings, supports or slabs during this project. <br /> Included with the improvements to this site will be new security fencing, a 12,000-gallon odorant <br /> tank including supports, concrete dyke and footings, 100 square foot equipment shelter building, <br /> flare and one LED security light. This security light will be located at the southeast corner of the <br /> new fence and will shine across the property northwesterly toward the wetland complex north of <br /> the project site. <br /> Clearing and grubbing within the existing fencing will be required but no tree removal is anticipated <br /> outside of the existing fence line. The design fence location was revised to be approximately 5-feet <br /> inside the existing fence location to eliminate any large diameter tree removal. <br /> A CenterPoint Energy security sign including contact information will be affixed to the security <br /> fencing surrounding this facility and facing the site access. <br /> Site Use <br /> The bulk storage odorant tank will be a storage site for CenterPoint Energy odorant. Odorant is an <br /> industry term and is a mixture oft-Butyl Mercaptan (Mercaptan) and Methyl Ethyl Sulfide and is a <br /> chemical that for safety purposes is injected into the gas system to give it a recognizable natural gas <br /> odor. <br /> CenterPoint Energy's odorant supplier will access the site by tanker truck to fill the storage tank. <br /> The frequency of filling the tank fluctuates yearly and is dependent on temperatures. During the <br /> colder heating months (November— March) the tank will require replenishment two to three times <br /> 03-24-2022 * CNP Odorant Tank CUP Narrative *1 <br />