TAC Comment

City of El Mirage — Regular Meeting (2021-04-06)

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PLANNING AND ZONING 
Community Development Department 
10000 N. El Mirage Road, El Mirage, Arizona 85335 
623-876-2996; Fax 623-876-4605; TDD 623-933-3258 
www.elmirageaz.gov 
 
 
MEMORANDUM 
 
TO: 
 
 Terri Soliman, Architectural Resource team, Inc.  
FROM: 
Jose A. Macias, Planner/GIS 
 
 
Community Development Department, Planning & Zoning  
RE: 
 
Catholic Charities Westside Head Start Site Plan 
DATE:  
March 2, 2021 
Mrs. Soliman,  
Please see the comments from El Mirage Technical Advisory Committee (TAC) for the 
proposed Site Plan Approval for a Day Care Center Use.    
 
BUILDING & SAFETY 
1. Please show the following items on the site plan with the construction submittal. 
a. Specify the 2012 IBC Occupancy Classification(s) for the structure.  
ECONOMIC DEVELOPMENT  
2. No comment.  
ENGINEERING 
3. See attached memorandum.  
 
FIRE DEPARTMENT 
4. Fire Department does not have any comments. We see that they are sprinkling 
the area. 
 
PLANNING & ZONING 
The follow Site Plan and Landscape comments can be address with construction and 
civil plans submittal.  
5. Site Plan: Please add the following note to the site plan: 
a. “Any change of use or occupancy of any building or buildings, including 
additions thereto requiring more parking, shall not be permitted until such 
additional parking spaces as required by this chapter are furnished.” 
6. The landscape Site Visibility Triangle is measured from behind the property line. 
Please revise.  
7. Provide Location Map to include an area within one-half miles of site.  
8. Landscape Plan: please provide the quantity and size of trees with final 
landscape plan.

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9. Landscape Plan: 50% of the trees shall be in 24” boxes.  
10. Please make sure to include a Landscape Irrigation Plan with the Civil Plans for 
construction review.   
POLICE DEPARTMENT 
11. No Comments.  
 
PUBLIC WORKS 
12. No comments.

Engineering 
Community Development Department 
10000 N El Mirage Road, El Mirage 85335 
623-972-8116; Fax 623-876-4605; TDD 623-933-3258 
www.elmirageaz.gov 
 
 
MEMORANDUM  
 
TO: 
 
Jose Macias, Planner/GIS 
FROM: 
Bryce Christo, P.E., Assistant City Engineer 
SUBJECT: 
Catholic Charities Westside Head Start – Development Application Review  
DATE: 
02-22-21 
 
Below are the Engineering Division’s comments for the above referenced submittal prepared in 
February 2021. These items will have to be addressed prior to the Planning and Zoning 
Meeting. 
 
1. None 
 
The below items will have to be addressed during the Construction Plan Submittal. 
 
Civil Plans 
1. Include the following items, as applicable: 
a. Topographic contours at a minimum interval of two feet 
b. Utilities and utility rights-of-way or easements 
c. Surface water holding ponds and drainage ditches with surface water drainage 
arrows 
d. Exterior signs 
e. Exterior lighting 
f. Landscaping and irrigation plans that include the size of the plantings at the time 
of planting and at maturity 
2. The side yard building setbacks shall be 5 feet. The Site Plan shows 10 feet. 
3. General Zoning Analysis Table 
a. The building height must be less than the Principle Building height.  
b. The Allowable Lot Coverage is 90%, not 37%. 
4. Show turning templates through the parking area with inside and outside turning radii of 
19.5 feet and 45 feet, respectively, to verify a fire truck can access site. The Site Plan 
shows an internal radius of 25 feet. Please revise. 
5. The proposed driveway entrance shall be per MAG or City details. The curb within the 
parking area shall be MAG type curb. 
6. Keynotes 125 and 128 of the Site Plan were not used. Keynote 142 shall be revised to 
maintain 6 feet of clearance around hydrant per City Detail EM-361. 
7. Show the intersection site distances per City Detail EM-158 for the proposed driveway.  
8. A stop sign is recommended at the driveway. 
9. The slope of any parking area shall not exceed 3%. 
10. It appears the existing sidewalk along Varney Road extends into the property. If this is 
accurate, a Pedestrian Access Easement or similar easement will be required along the

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frontage of the property. This easement shall be dedicated to the City by separate 
instrument. 
11. The existing retention basin appears to cross property lines. Is this accurate? 
12. Show high water level, bottom elevations, volume required and volume provided for any 
existing or proposed retention basin. Show the basin overflow and the ultimate outfall 
elevation of the site. 
13. Side slopes adjacent to the public right to way or areas where pedestrian access is 
permitted shall be 6:1 or flatter. There shall be at least two feet of level ground between 
any wall or vertical obstruction and the top of any side slope grading.  
14. All finished floor elevations must be a minimum of 14 inches above the low outfall of the 
parcel and one foot above the 100-year base flood elevation. 
15. All water and sewer mains and services within the site will be considered private. Any 
hydrants within the project site will be private and painted red per City Detail EM-360. 
All hydrants require markers per MAG Detail 122. 
16. There shall be a separate water service for domestic, irrigation and fire. The domestic and 
irrigation services require their own meter and all services require backflow preventers. 
The minimum domestic and irrigation service size shall be 1-inch. The minimum fire 
service size shall be 6-inches. 
17. The developer is required to perform their own flow test. The City’s Fire Department 
(623-583-7968) shall be contacted as a witness. Also notify the Public Works Department 
(623-876-4251) one week prior to the test. 
18. Photometrics will be required to show that: 
a. 0.0 foot-candles from the site reaches any adjacent residential property 
b. Any on-site lighting that reaches the Varney Road does not exceed 1.0 foot-
candle at the centerline. 
19. Plans shall include applicable City Notes. Call out MAG, City, etc. details to be used. 
 
Drainage Report 
20. Provide calculations for the basin including volume required, volume provided, high 
water level and bottom elevation. The proposed basin will have to account for the 
proposed parcel and the adjacent half right of way of Varney Road along the parcel 
frontage.  
21. The 100-year, 1-hour rainfall shall be 2.4 inches. 
22. The Drainage Report must also include the following:  
a. A tributary area map to show the areas contributing to each basin. 
b. Sizing calculations for any storm drain  
c. Dry up calculations for dry wells 
 
Water Statement 
23. Provide the anticipated water demand for the site using the attached Water System 
Design Criteria. 
 
Wastewater Statement 
24. Provide the anticipated wastewater demand for the site using the attached Wastewater 
System Design Criteria. 
 
Traffic Impact Statement 
25. The Traffic Impact Statement is accepted and no further studies are required at this time. 
A Traffic Impact Study may be required for any potential future phases.

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Phase I Environmental Site Assessment 
26. The Phase I ESA is labeled as “Draft”. Please provide the Final version. 
 
Miscellaneous 
27. A Geotechnical Report will be required to provide on-site pavement sections and 
percolation rates. Verify the proposed pavement sections can handle 75,000 lbs. 
28. A Stormwater Pollution Prevention Plan (SWPPP) will be required per the City’s SWPPP 
Guidelines document. A Notice of Intent (NOI) from ADEQ will be required prior to the 
City’s construction permit approval. 
29. An Approval to Construct (ATC) may be required from MCESD for the water and sewer 
line extensions. 
30. A Haul Permit will be required if 500 cubic yards or more of material will be brought 
into or out of the site. This will require a separate application, an exhibit showing the haul 
route and insurance from the company performing the haul. The fee is $300. 
31. A Dust Control Permit from the County will be required prior to the City’s construction 
permit approval. 
32. Any cutting of the pavement in Varney Road will require Pavement Cut Fees per the 
most current Fee Schedule. 
 
The above comments are meant to be general in nature and are not considered to be all inclusive. 
Additional comments will arise during the formal permit submittal.

DESCRIPTION
CRITERIA
AVERAGE DAY DEMAND
Gallons per capita per day (gpcd)(1)
117
Density (people per dwelling unit)(2)
3.34
Land Use Category(3)
Varies
PEAKING FACTORS
Maximum Day / Average Day
1.7
Peak Hour / Maximum Day
1.7
Peak Hour / Average Day
2.9
VELOCITY CRITERIA
Maximum Day Condition
Max Velocity < 5 fps
Peak Hour Condition
Max Velocity ≤ 7 fps
Max Day Plus Fire Flow Condition
Max Velocity ≤ 10 fps
HEAD LOSS CRITERIA
Maximum Day Condition
2 to 7 feet per 1,000 feet of pipe
Peak Hour Condition
≤ 10 feet per 1,000 feet of pipe
PRESSURE CRITERIA
Max Day Plus Fire Flow Condition
Min Residual Presure of 20 psi
Peak Hour Condition
Min System Pressure of 40 psi
FIRE DEMAND CRITERIA
Single Family Residential
1,500 gpm at 2 hours
All Other Land Uses
3,500 gpm for 4 hours
NOTES:
(1) Average per capita water use per 2012 Water and Wastewater Master Plan
provided by Wilson Engineers
(2) Persons per household, 2014‐2018, per US Census Bureau
(3) Use latest version of City of Phoenix Design Standards Manual for Water 
and Wastewater Systems.  Other values may be used with prior approval 
from the Engineering Division.
WATER SYSTEM DESIGN CRITERIA

DESCRIPTION
CRITERIA
AVERAGE DAY DEMAND
Gallons per capita per day (gpcd)(1)
58.5
Density (people per dwelling unit)(2)
3.34
Land Use Category(3)
Varies
PEAKING FACTORS
Dry Weather Peaking Factors (Applied to Average Flows)
Per AAC R18‐9‐E301.D
Wet Weather Peaking Factors (Applied to Peak Flows)
1.17
VELOCITY CRITERIA
Gravity Mains
2 fps ≤ Velocity ≤  8 fps
Force Mains
3 fps ≤ Velocity ≤ 7 fps
FLOW DEPTH CRITERIA (d/D) FOR DRY WEATHER PEAK HOUR FLOWS
d/D for new sewer with diameter less than 10 inches
0.50
d/D for new sewer with diameter 12 inches and above
0.75 (AAC R18‐9‐E301.D.e.iii)
FLOW DEPTH CRITERIA (d/D) FOR WET WEATHER PEAK HOUR FLOWS
d/D for designing new sewer pipe
< 0.90
d/D for evaluating existing pipe in developed areas
< 1.00
HEAD LOSS CRITERIA
Gravity pipe
Manning's n=0.013
Pressure pipe
Hazen Williams' C=120
MANHOLES
When smaller pipe joins larger pipe 
Match Crowns
Invert drop through manhole
0.20 feet
NOTES:
(1) Average per capita water use per 2012 Water and Wastewater Master Plan  provided by Wilson Engineers
(2) Persons per household, 2014‐2018, per US Census Bureau
(3) Use latest version of City of Phoenix Design Standards Manual for Water and Wastewater Systems.  Other 
values may be used with prior approval from the Engineering Division
WASTEWATER SYSTEM DESIGN CRITERIA