2012-02-01_REVISION - M2010049 - Laserfiche WebLink

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any wellhead. Any construction within a 200 -foot radius of any tank battery or 150 -foot radius of any wellhead shall require a variance from the terms of the Section 23 -3 -10 of the Weld County Code. 7. Any future structures or uses on site must obtain the appropriate zoning and building permits. 8. Low water crossings, including access roads, shall not impede floodwater, potentially adversely impacting adjacent properties and /or conditions. Building Department 1. Any new structures and any electrical work will require appropriate building permits. Public Works Department 1. A letter of map revision shall be submitted to Weld County and FEMA for review and acceptance by the gravel pit operator within 60 days of final bond release from DRMS and prior to the request for the vacation of the USR. The LOMR shall depict the impact of mining activity to the floodplain boundaries, floodway boundaries, and BFEs. 2. Any new buildings or structures to be placed in the floodplain or any existing buildings /structures in the floodplain that will be used by the mine operator shall obtain a FHDP prior to the use or placement of such structure or building. 3. The current FHDP application must be amended for future reclamation development, or for any changes to the mine plan as shown on the FHDP maps date stamped November 17, 2011. 4. Any proposed development activities in the FEMA- defined 100 -year floodplain and /or floodway may not cause an adverse rise in the BFE on adjacent or upstream properties or structures. Any flooding impacts must be quantified in the amended FHDP documentation, clearly identified on pertinent work maps stamped by a registered P.E., and be accompanied by written approval from impacted landowners. 5. Any future proposed stockpiles, berms, levees, or riverbank protection features not identified on the current effective FIRM maps must be approved through the amended FHDP (AmFHDP) process and FEMA's LOMR Process. Future stockpiles, berms, levees, or riverbank protection features will not be allowed in the floodway and will only be allowed in the flood fringe if they are permitted with an AmFHDP and are oriented parallel to the direction of flow in the floodplain. 6. Portable toilets located in the flood plain shall be anchored to resist flotation and lateral forces associated with flood waters. 7. No tanks such as fueling tanks will be allowed in the floodway and tanks placed in the flood fringe will have to be anchored, protected with a fuel containment berm whose top of wall elevation is a minimum of one foot above the BFE, and permitted with an amended FHDP application. 8. AmFHDP applications will be subject to the rules and regulations in effect at the time of future application. 9. Pursuant to Chapter 15, Articles I and II of the Weld County Code, if noxious weeds exist on the property or become established as a result of the proposed development, the applicant/landowner shall be responsible for controlling the noxious weeds. All vegetation, other than grasses, needs to be maintained at a maximum height of 12 inches until the area is completely developed. Environmental Health Services 1. The future installation of any septic system within the 100 -year floodplain shall comply with the Weld County I.S.D.S. floodplain regulations. Specifically, if the septic tank lids are not above the floodplain elevation, then the access to the tank manhole lids must be covered with 20 ml PVC and sealed with plumbers cement. In addition, a one -way valve must be installed on the effluent line between the tank and the absorption field. Therefore, any future pumping of the Page 4 of 5 M: \PLANNING — DEVELOPMENT REVIEW\FHDP -Flood Hazard Development Permit \743 Varra Great Western Sugar Quarry\FHDP -743 Varra Great Western Sugar Quarry Conditional Approval 11- 21- 11.doc