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Permit Review Detail

Permit Number: T03BU01715
Parcel: 13630004R

Review Status: Completed

Review Details: GRADING

Permit Number - T03BU01715
Review Name: GRADING
Review Status: Completed
Review Date Reviewer's Name Type of Review Description Status Comments
07/17/2003 Loren Makus ENGINEERING REVIEW Denied To: Benjamin Chandler
Applicant 9575 E. Irvington Road
Tucson, Arizona 85747
SUBJECT: 9245 E. Irvington Rd.
Grading Plan T03BU01715 (First submittal)
T14S, R15E, Section 34

RESUBMITTAL REQUIRED: Grading Plan and Drainage Statement

The Grading Plan (GP) and Drainage Statement (DS) cannot be approved as submitted. Please address the following review comments prior to the next submittal.

Grading Plan:

1. Grading plan clearly marked "GRADING PLAN".
2. Please include a response letter to the comments along with the corrected copies with resubmittal.
3. List administrative address/site address on plans.
4. Provide a Location Map (3" = 1 mile)
5. Use Engineering Scale only.
6. Show all symbols in the legend.
7. List all Cut and Fill quantities in cubic yards. If both are 0 cy, please list.
8. Grading in excess of 5,000 cubic yards shall be performed in accordance with an approved grading plan prepared by a registered civil engineer per Section 9.3 of the 2000 IBC. For your information only.
9. Show cross section with transverse and longitudinal slopes.
10. Please show the proposed roof drainage patterns, 100% of the 10-year flow must be conveyed under the sidewalks. Please provide supporting calculations to demonstrate compliance with D.S. 3-01.4.4. If the location(s) of the roof scuppers have not yet been decided, add a general note indicating sidewalk scuppers (per COT/SD) will be used when the roof scuppers locations have been designed.
11. Call out surface paving material.
12. Curb and Gutter elevation include drainage flow with percent slope.
13. Show details of all surface materials.
14. Show the 100-year flood peak discharge of the parking lot.
15. Call out all slopes and stabilization material (concrete, riprap, gabbions or vegetation).
16. Slopes of 3H: 1V require hand placed riprap.
17. Slopes of 2H: 1V or greater require grouted riprap.
18. Cut or fill slopes require a 2' minimum setback from property line.
19. All proposed fill to conform to Section 13 of the 2000 IBC - Address grade differential of proposed lot grades from the existing buildings adjacent to the graded site - 2' minimum setbacks from top and toe or cut of fill slopes.
20. Drainage patterns with percent slopes (Show patterns within the first 100 feet from the property line).
21. Flow arrows, grades and flow rates within and adjacent to site to show drainage scheme.
22. Show details of all surface and subsurface drainage devices. A Stormwater pollution prevention plan is required. Contact Paul P. Machado at 791-5550 x1193 for additional information.

Drainage Statement:
1. The content and format of the DS should follow S.M.D.D.F.M., chap. II, 2.1.3.
2. In order to accept the DS, the engineer of record must seal the DS.
3. Include a statement in the DS that no surface water of any kind will be allowed to drain offsite.
4. Show the project address on the cover of the DS.
5. State that all surface water will be draining into the existing retention/detention basin on site and there will be no "future stormwater flow directed off-site".
6. Please include construction details, locations and x-sections of the two triangular open channels with the next submittal.
7. Please show locations and size of the proposed rip-rap and/or gabions.

Stormwater pollution prevention plan:
City of Tucson Submittal Requirements:


NOTE: 1. The following comments are the criteria required on a SWPPP plan. All the comments may not be applicable to the project. Please note the comments for future submittals.
2. Please note the section titled "Other controls". This section is pertinent to the project.


Submit Three Packets, each containing:
1. Signed copy of Notice of Intent (NOI); (Part III.F) Each operator is responsible for submitting the original of the NOI to ADEQ.
2. Stormwater Pollution Prevention Plan (SWPPP), including a Narrative and Plan Sheets
3. Signed project manager/owner certification and contractor's certification (if available) (Part IV.J.1)
After review, two packets will be returned to you, one must be retained on the job site, the second is for your records. The third remains with the City for review and inspection purposes.
Include Civil Engineer's Arizona registration seal and signature on all plan sheets
The Plan Cover sheet should contain:
1. Project title block with name and address of project
2. North arrow, scale.
3. Index of plan sheets (if more than one plan sheet)
4. Legend including symbols for designated washout areas, solid waste disposal areas, equipment storage and maintenance areas, & protected chemical storage areas
5. Owner's/Developer's name, address, & phone number, email
6. Engineer's name, address, & phone number, email.

SWPPP Requirements:

General Project Information:

1. Provide identification of all operators and the areas over which each has control (Part IV.C.1) Where an operator is unknown (such as a yet to be determined general contractor) leave space for the identity to be supplied later.
2. Provide a description of project and it's intended use (Part IV.C.2.a)
3. Describe the intended sequence of soil disturbing activities (Part IV.C.2.b)
4. Provide the total area of site, and an estimate of the total area to be disturbed (include any off-site borrow and/or fill areas) (Part IV.C.2.c)
5. Provide estimated run-off coefficients for pre-construction and post-construction conditions (Part IV.C.2.d)
6. Provide existing data on soils and quality of site discharges (Part IV.C.2.d)
7. Provide general location map showing and identifying receiving waters within 1 mile (Part IV.C.2.e)
8. Include a copy of the AzPDES permit and the NOI on forms provided by ADEQ. (Part IV.F) Each operator is responsible for submitting a completed NOI to ADEQ and to the City of Tucson.
Assessment of Potential Impacts:

1. Identify the name of nearest receiving waters and the a real extent and description of any wetlands that will be disturbed or receive discharges from disturbed areas of the project. (Part IV.C.4)
2. Identify location and potential discharges from support activities, including asphalt/concrete plants and stockpiles. (Part IV.C.5)
3. Describe construction and waste materials expected to be stored on-site with updates as appropriate. Include descriptions of controls to reduce pollutants from these materials. (Part IV.D.8.c)
4. Identify off-site material storage areas used solely by the project. (Part IV.C.6)
5. List sources of non-stormwater discharges including water from dust control, vehicle washing, and concrete washout. (Part IV.D.7)




BMP Selection:

1. Describe BMPs for each major activity in the project description; for on and off-site construction, waste and material storage areas or support activities. (Part IV.d.1)
2. Describe spill prevention and control plan (Part IV.D.8.c)
3. Describe BMPs for non-storm discharges (Part IV.D.7)
4. Describe vehicle and equipment maintenance controls (Part IV.c.5)
5. Describe controls to comply with applicable federal, state or local requirements. (Part IV.G)
6. For control measures, identify the implementation sequence and the operator responsible, (Part IV.D.1) and why BMPs were selected. (Part IV.D.2.b)
7. All BMPs must be properly selected, installed and maintained per specifications and good engineering practices. (Part IV.D.2.b)
8. If a BMP has been used inappropriately, it must be must replaced or modified within 24 hours. (Part IV.D.2.b)
9. Erosion and sediment controls shall be designed to retain sediment on site. (Part IV.D.2.a)If sediment does leave the site, off-site accumulation of sediment must be routinely removed to ensure no adverse effects on water quality. (Part IV.D.2.c)
10. Describe good housekeeping practices to prevent litter, construction debris, and construction chemicals from leaving the site (Part IV.D.3)
11. Include statement that the project is in compliance with all applicable federal State, or local requirements. (Part IV.G)
Erosion Controls:

1. Document areas where existing vegetation will be preserved. (Part IV.D.4.a)
2. In areas where construction has temporarily or permanently ceased, stabilization measures must be implemented within 14 days. (Part IV.D.4.b) If construction will resume within 14 days, then no stabilization measures are needed. (Part IV.D.4.b.i)
3. Describe interim, temporary and permanent stabilization practices, including an implementation schedule. (Part IV.D.4.a)
4. If stabilization includes establishing perennial vegetation, and drought conditions or seasonally arid conditions preclude vegetation establishment, vegetative stabilization must be initiated as soon as practicable. (Part IV.D.4.b.iii)
The following records of stabilization must be maintained:
1. Dates when major grading activities occur. (Part IV.D.4.c.i).
2. Dates when construction temporarily or permanently ceases on a portion of the site. (Part IV.D.4.c.ii)
3. Dates when stabilization measures are initiated and completed. (Part IV.D.4.c.iii)



Sediment Controls:

1. Describe structural practices to divert flows or limit runoff. (Part IV.D.5)
2. Consider public safety as a design factor. (Part IV.D.5.a.i)
3. Avoid placement of structural controls in floodplains. (Part IV.D.5)
4. For drainage areas of 10 or more acres, provide temporary or permanent sediment basin with storage for calculated volume of runoff from a 2 year, 24 hour storm. (Part IV.D.5.a.i)
5. In determining drainage area, do not consider runoff from undisturbed or stabilized areas and off-site flows that are diverted around the disturbed area and the sediment basin. (Part IV.D.5.a.i)
6. Where runoff volume is not calculated, provide temporary or permanent sediment basin with a storage volume of 3,600 cubic feet of runoff per acre. (Part IV.D.5.a.i)
7. If a sediment basin with these volumes is not achievable, then smaller sediment basins and or sediment traps shall be used. (Part IV.D.5.a.ii)
8. For drainage areas less than 10 acres, smaller sediment basins and/or sediment traps shall be used. (Part IV.D.5.a.iii)
9. When determining if a sediment basin is attainable, factors to consider include, site soils, slope, available area. If non-attainability is claimed, include an explanation. (Part IV.D.5.a.i)
10. Remove sediment from sediment controls when design capacity has been reduced by 50%.(Part IV.E.3)
11. Silt fences, vegetative buffer strips, or other sediment controls are required for all down slope boundaries (and for side slope boundaries as appropriate). (Part IV.D.5.a)
12. Place velocity dissipation devices at discharge locations and along the length of any outfall channel to provide a non-erosive flow velocity. (Part IV.D.5.b)
13. Describe how soil will be stabilized at culvert locations to prevent rills and gullies. (Part IV.D.8.e)

On Plan Sheets or Site Map show:

1. Drainage patterns, (Part IV.C.3.a)
2. Approximate slopes after major grading, (Part IV.C.3.a)
3. Areas of soil disturbance/Areas which will not be disturbed, (Part IV.C.3.b)
4. Locations of structural and nonstructural controls, (Part IV.C.3.c)
5. Locations where stabilization practices are planned, (Part IV.C.3.d)
6. Locations of off-site and on-site material, waste, borrow areas, and equipment storage areas, (Part IV.C.3.e)
7. Locations of surface water bodies (including wetlands), (Part IV.C.3.f)
8. Locations where stormwater discharges to a surface water (include ephemeral waters, or dry washes) and to MS4s, (Part IV.C.3.g)
9. Locations and registrations numbers of on-site drywells, (Part IV.C.3.h)




Post Construction Stormwater Controls:

1. Describe Post Construction Stormwater Controls that will be installed during construction.
2. Design and install Post Construction Controls consistent with applicable local or state requirements.
3. Describe measures to prevent the discharge of solid materials to waters of the US. (Part IV.D.3)
4. Place structural measures on upland soils to the degree attainable.

Other Controls:

1. Describe BMPs to minimize off-site vehicle tracking of sediments and the generation of dust. (Part IV.D.8.b)
2. Report oil or hazardous materials releases in excess of reportable quantities, or that may endanger human health or the environment, within 24 hours to ADEQ: (602) 771-4466 FAX (602) 771-4505. (Part VI.L.5.a)

Inspection Requirements:

1. Specify the inspection schedule either: once per week, OR once per 14 days and within 24 hours of a 0.5" rainfall. (Part IV.H.1)
2. Inspection can be reduced to monthly if, site has been temporarily stabilized, OR Construction is in an arid area, AND construction is occurring during the seasonal arid period. Monthly schedule must also include pre and post storm inspections. (Part IV.H.2)

During Inspection:
1. Verify SWPPP measures are implemented and effective.
2. Note any BMP deficiencies and include corrective action schedule
3. Note any maintenance needs or modifications
4. Certify that facility is in compliance with the SWPPP.

If you have any questions, I can be reached at 791-5550 x1193, or pmachad2@ci.tucson.az.us
Paul Machado
Senior Engineering Associate
07/17/2003 Loren Makus NPDES REVIEW Denied
07/25/2003 DAN CASTRO ZONING REVIEW Denied Zoning Review may not approve the grading plan until the site plan has been approved by all sections and the grading plan has been approved by Engineering and Landscape/NPPO.
07/28/2003 JOE LINVILLE NPPO REVIEW Approved

Final Status

Task End Date Reviewer's Name Type of Review Description
08/25/2003 CINDY AGUILAR OUT TO CUSTOMER Completed
07/28/2003 ANGIE SHOFFSTALL REJECT SHELF Completed