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Permit Review Detail
Review Status: Completed
Review Details: GRADING
Permit Number - T03BU02470
Review Name: GRADING
Review Status: Completed
| Review Date | Reviewer's Name | Type of Review | Description | Status | Comments |
|---|---|---|---|---|---|
| 10/15/2003 | Joseph Linville | NPPO | REVIEW | Denied | Grading plan review can proceed after approval of the site/landscape plans. Include approved copies of these plans with future submittals. |
| 10/20/2003 | Doug Williams | ENGINEERING | REVIEW | Denied | SUBJECT: Tucson Student Housing-Site/Drainage Review REVIEWER: Doug Williams DATE: 22 October 2003 ACTIVITY NUMBER: T03OT01130 T14 S, R13 E, Sec. 9 SUMMARY: Engineering Division has reviewed the Site, Grading and Stormwater Pollution Prevention Plans (SWPPPS) and Drainage Report received September 21, 2003. Approvals are not recommended at this time - resubmittal of each is required. Please ensure that all revisions to the drainage report are reflected and/or revised on the Site Plan, as pertinent. The following comments must be addressed: DRAINAGE REPORT: 1. Describe and present hydraulic calculation sheets for each of the hydraulic systems used to return flows to either natural or existing locations and magnitudes along downstream property line(s) (SMDDFM, Section 2.3.1.5 F). Please note that discussion with Mr. Eduardo Gonzales (Rick Engineering - Tucson office) on 22 October, addressed the need for revising the proposed discharge location in order to match existing drainage patterns as closely as possible along the northern and eastern property lines. Please contact me for clarification or if there are any questions about this issue. 2. Due to the need for revisions relating to comment #1 above, provide revised detention/retention basin routing, basin details and appurtenant structures (weirs, spillways, etc.), cross sections and details, fully labeled and dimensioned with basin tops, bottoms, adjacent grades, inlet and outlet elevations and 100-year water surface elevations noted in the report (SMDDFM, Section 2.3.1.6 A 4, DS 10-02.0); 3. The proposed diversion and concentration of discharge from drainage areas 3, 4, 5 and a portion of 2 will result in a change from existing conditions drainage patterns exiting the site, resulting in a concentration and increase in flow to the east at the proposed north basin outlet, and complete diversion of flows currently exiting to the north in sheet flow pattern. Such a concentration and diversion presents a significant change from existing patterns throughout the majority of the site, and may not be approved as such. The report must be revised as necessary, in order to best replicate existing patterns, while ensuring developed conditions flow rates do not exceed existing conditions flow rates; 4. Stormwater storage volume calculations indicate the minimum retention volume required (.53 AF) will not be provided in the two basins. Please ensure the 5-year threshold retention volume is provided onsite (Pima County/City of Tucson Stormwater Detention/Retention Manual, Sections 1.4 and 2.2 - Development Standard 10-01.0); 5. Percolation test results contained in the Geotechnical Investigation Report indicate testing was performed at elevations ranging from approximately 0.5' - 2.5' above the proposed basin bottom locations, upon examination of the Site plan. Testing should be performed at or below the proposed basin bottom elevations 6. The Geotechnical report recommends that the crest of any basin not be within 5' of any perimeter wall. Please address the wall proposed within this setback recommendation; 7. The proposed 6" storm drain, associate erosion protection and the land on which these items are proposed, beyond property limits, requires a recorded drainage easement. Recording information with exhibits, legal description, and maintenance responsibility requirements must be provided and included with the drainage report and on the site plan. 8. The report appears to propose low flow pipe "bleed-offs" for the north (and possibly south) retention/detentions basins. The use of such bleed-offs may not be approved where flows discharge directly to the right of way (south basin), and may not exceed 1 cfs in a balanced basin if percolation rates exceed the maximum time allowed for disposal. Please ensure basin bottom grades slope drain to any low-flow outlet that may meet approval in such instances. Please see comment # 5 above, regarding percolation testing locations. (Pima County/City of Tucson Stormwater Detention/Retention Manual, Sections 1.4 and 3.5.1 - Development Standard 10-01.0); SITE PLAN: 1. The south basin "B" weir detail elevations still appear to contain elevation conflicts. Please revise as necessary and ensure the elevations and the weir location conforms to the drainage report and grading plan; 2. All changes resulting from the drainage report comments must be reflected on the site plan, where required to be depicted on the site plan. GRADING PLAN COMMENTS: NOTE: Due to the nature of changes/revisions that must be addressed in the drainage report, additional comments may be necessary upon resubmittal. Please ensure all revisions to the Site Plan and Drainage Report are reflected on the Grading Plans. 1. Provide a general grading note stating that grading shall be in conformance with the 2000 International Building Code (IBC) Chapter 36 (Excavation and Grading); 2. Clearly depict limits of grading and provide the total area to be disturbed; 3. Provide an additional callout for the west side of the driveway access on Broadway Blvd. (keynote 5, sheet 9); 4. Add a note on Detail 4, sheet 2 to match existing grade at the curb opening; 5. Provide a reference for curb terminal sections Pima County/City of Tucson Standard Detail (PC/COT SD 212) at the Broadway Blvd. right of way access locations; 6. Depict the continuation of pavement (existing) west of the driveway entrance on sheet 9; 7. Correct the detail number to 14/3 under Keynote 36; 8. Please add 2' grading setbacks from all property lines (sections A-A and D-D); STORMWATER POLLUTION PREVENTION PLANS Note: The arrival of the SWMP on 23 October 2003 did not allow for a complete and thorough review, dues to the same due date for comments on this project. Listed below are the salient items that must be provided in the plan. Please ensure all operator information, including any day to day operators, is provided in the text. Additional comments may be forthcoming due to the changes necessary for Drainage Report, Site and Grading Plan approvals 1. Correct the telephone number in Stormwater Management Note 2 to reflect the City of Tucson's Development Services Department (791-5550); 2. Revise note 3 to reflect the appropriate Pima County agency contact and phone number; 3. Please provide a copy of the owner/developer and Contractor's signed certification (pages 15 and 16 of the SWMP); 4. Depict an acceptable designated washout area location on sheet 2 of the SWPPP. This office requires notification (Engineering Division), should a change to the washout location be made or proposed; If you have any questions, I can be reached at 791-5550, extension 1189 or Dwillia1@ci.tucson.az.us. Douglas Williams Sr. Engineering Associate Engineering Division Development Services Department |
| 10/21/2003 | PATRICIA GEHLEN | ZONING | REVIEW | Denied | Zoning 10/21/2003 Zoning may not review and approve the grading plans until the approved site plan is in the package. |
Final Status
| Task End Date | Reviewer's Name | Type of Review | Description |
|---|---|---|---|
| 11/04/2003 | DELMA ROBEY | OUT TO CUSTOMER | Completed |