Permit Review Detail
Review Status: Completed
Review Details: FLOODPLAIN
Permit Number - T07OT01888
Review Name: FLOODPLAIN
Review Status: Completed
| Review Date | Reviewer's Name | Type of Review | Description | Status | Comments |
|---|---|---|---|---|---|
| 08/22/2007 | ELIZABETH EBERBACH | ENGINEERING | REVIEW | Denied | TO: CH2MHill / Blue Mesa Studios SUBJECT: Kinder Morgan pipeline maintenance Site Plan Review REVIEWER: Elizabeth Eberbach ACTIVITY NUMBERS: T07CM02836, T07OT01888 SUMMARY: Engineering Division of Development Services Department reviewed the floodplain use permit application, and the combo permit application submittal, that included the NPPO plans for the Kinder Morgan Pipeline project, SWPP report, and ERR-drainage report. Engineering does not recommend approval at this time. The ERR-drainage report was submitted 21AUG07 with the Floodplain Use Permit. Portions of the SWPP report (sealed copy, General Permit, and NOI) were submitted 21AUG07. SITE PLAN AND FLOODPLAIN COMMENTS: 1) Tucson Code Sec. 26-11.2.(f): For the Environmental Resource Report / drainage report, address the following floodplain comments: a) Tucson Code Chapter 26 Article I Division 1 Section 26-5.2(4): There are riparian floodplain areas on the portions of project which are subject to City of Tucson standards and code restrictions. Per floodplain and erosion hazard area regulations, 100-year floodplain riparian areas shall not be unnecessarily altered. Clear delineation of the overlapping area of the 100-year floodplain limits and the limits of riparian area on drainage exhibit(s). Necessary alteration includes necessary all weather access to a site where there are no other access, or necessary utility crossing disturbance where there are no other locations for the utilities, or other necessary development where there are no other alternatives. Utility maintenance is considered a necessary alteration of the riparian floodplain. The riparian area and any encroachment must be accepted by Landscaping as well as Engineering with the review and acceptance of the ERR drainage report which is required with the riparian floodplain review. The project shall reflect ERR conformance in the plan and drainage report. Address the following comments: i) DS Sec.2-13.2.5.B.1: The proposed pipeline crosses FEMA and local jurisdictional floodplains. The ERR drainage report shall have exhibits that show delineated floodplain limits on plan views. There shall be an exhibit that shows both the floodplain limits and the protected riparian limits; ii) Label FEMA zones on plan view; iii) DS Sec.2-13.2.5.B.1.p: On ERR drainage report exhibit, label areas of overlapping floodplain/riparian areas as Protected Riparian Area. b) Regarding the ERR Drainage Report, address the following: i) Provide discussion to clarify how construction and placement of pipe at the crossing at DL2 will be protected from any adverse conditions, including complete discussion of compaction of trench and cover backfill; ii) Provide discussion of how the treatment of the existing pipeline (if it is to remain) will not adversely impact the jurisdictional floodplain or groundwater in the areas of DL2 and DL3; iii) Provide a summary of the schedule of construction activities to include utility identification to revegetation/mitigation, with a general expected time line. c) If not shown on the plans, provide information regarding the depth, material, and size of existing pipe at floodplain crossings DL2 and DL3. d) Condition of permit shall include required submittal of all copies of compaction reports, with special inspection reports at the floodplain locations, to be submitted to Engineering Division Development Services Department City of Tucson. These reports shall be sealed by a geotechnical registrant of the State of Arizona. 2) Provide copies of the pipeline installation construction plan sheets that provides the following information: a) depth of proposed pipe at floodplain crossings DL2 and DL3; b) material and size of new pipe. 3) Submit a copy of the 100-ft temporary construction easement that provides access across parcels that are proposed for construction. Add information to plan for all parcel codes and addresses for each parcel affected by the pipeline installation. If acceptable docket and page is not provided for full scope of project, separate permits must be obtained for each parcel. 4) For the SWPP report, a sealed copy is needed with the AzPDES General Permit and copy of NOI that was submitted to ADEQ. (Submitted 22AUG07) 5) For resubmittal, provide 3 copies of the site plans, 3 copies of the revised ERR drainage report, 3 copies of the revised updated SWPP, 1 copy of the docket/page of easement, 2 copies of the construction plan sheets, and a response letter. If you have any questions, I can be reached at (520) 837-4934. Elizabeth Eberbach, PE, CPM, CFM Civil Engineer Engineering Division Development Services City of Tucson |
Final Status
| Task End Date | Reviewer's Name | Type of Review | Description |
|---|---|---|---|
| 08/24/2007 | GERARDO BONILLA | OUT TO CUSTOMER | Completed |