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Environmental Health Services <br />1. The existing septic system appears to be within the 100 -year floodplain. The <br />installation of any septic system within the 100 -year floodplain shall comply with the <br />Weld County I.S.D.S. floodplain regulations. Specifically, if the septic tank lids are not <br />above the floodplain elevation, then the access to the tank manhole lids must be <br />covered with 20 ml PVC and sealed with plumbers cement. In addition, a one -way <br />valve must be installed on the effluent line between the tank and the absorption field. <br />Therefore, any future pumping of the septic tank will require that the tank lids be <br />sealed prior to backfilling, and any future upgrade of the septic system will require that <br />a one -way valve be installed on the effluent line. <br />2. In accordance with the Colorado I.S.D.S. Regulations, no septic systems shall be <br />installed within the floodway. Please contact Weld County Public Works to verify that <br />the septic system is installed in the flood plain not the floodway. <br />RECOMMENDATIONS: <br />The Weld County Public Works Department recommends conditional approval of this FHDP <br />application, subject to all Comments and Requirements included in this letter. <br />Sincerely, <br />CIa9'Kimmi, P.E., CFM <br />Weld County Public Works <br />Original: L.G. Everist, Inc., Applicant <br />CC to Files: AmUSR -1102 <br />AmFHDP -263 <br />PC by Post: Jacob James, P.E., McLaughlin Water Engineers, 2420 Alcott St, Denver, CO 80211 <br />Kim Ogle, Planning Services <br />Frank Piacentino, Building Inspections Dept. <br />Lauren Light, Environmental Health <br />Lin Dodge, Planning Services <br />Page 6 of 6 <br />M:IPLANNING — DEVELOPMENT REVIEIMFHDP -Flood Hazard Development Permit1Am263 LG Everist Firestone Gravel PitAmFHDP- <br />263 LG Everist Firestone Resource Pit Conditional Approval 07- 28- 2011.doc <br />