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2 <br /> <br />Per our conversation, we are looking for a determination as to whether or not it is acceptable to nest fire <br />suppression storage with standby storage per WAC 246-290-235(4). <br /> <br />WAC 246-290-235(4) reads as: <br />“Standby and fire suppression storage volumes may be nested with the larger of the two volumes being the <br />minimum available, provided the local fire protection authority does not require them to be additive.” <br /> <br />The table below demonstrates our proposed storage volumes for the Vantage Bay Water System (excluding <br />dead storage). <br /> <br />Required Storage Capacity  <br />Period/Storage Component Current 10 Year 20 Year  <br />Operational Storage (OS) 0 93,750 93,750  <br />Equalizing (ES) 0 56,305 56,305  <br />Standby (SB) 0  218,895  218,895  <br />Fire Suppression (FSS) 0  180,000 180,000  <br />Surplus 0 1,050 1,050  <br />Total (TS) 0  370,000  370,000  <br /> <br />Our analysis that was used to reach this conclusion was based on the DOH’s Water System Design Manual <br />(Publication 331-123). <br /> <br />Let me know if you have any questions or need more information from us, I look forward to hearing from you. <br /> <br />Regards, <br /> <br />Zachary Horton, EIT <br />PLSA Engineering & Surveying <br />521 North 20th Avenue, Suite 3 <br />Yakima, WA 98902 <br /> <br />P: (509) 575-6990 Ext. 205 <br />F: (509) 575-6993 <br /> <br /> <br />  <br /> <br /> <br />Notice: Email sent to Kittitas County may be subject to public disclosure as required by law. <br />message id: 38eb45916c6dcbdac24bb8719d004a14 <br />Index #22