TAC Review Comments

City of El Mirage — Regular Meeting (2024-10-01)

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PLANNING AND ZONING 
Development Services Department 
10000 N. El Mirage Road, El Mirage, Arizona 85335 
623-876-2996; Fax 623-876-4605; TDD 623-933-3258 
www.elmirageaz.gov 
 
 
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Technical Advisory Committee 
Review Comment Memorandum  
To: 
 
Steve Bowser   
From  
Jose A. Macias, Senior Planner 
 
 
Development Services Department, Planning & Zoning  
Re: 
 
 SP24-08-01 Black Rock Coffee   
Date:  
August 20, 2024 
Mr. Bower,  
Please see the review comments from the El Mirage Technical Advisory Committee (TAC) for 
the conditional use permit and site plan approval zoning application.      
 
BUILDING & SAFETY – Brigham Bennett 
1. No comment. 
ECONOMIC DEVELOPMENT – Tom Doyle 
2. El Mirage needs coffee shops.  If traffic permits, I recommend approval of the site plan. 
ENGINEERING – Bryce Christo 
3. See attached memorandum. 
FIRE DEPARTMENT – Jason Napier  
4. No comment.  
PLANNING & ZONING – Jose A. Macias 
5. See attached memorandum.  
POLICE DEPARTMENT – Chris Culp 
6. No comments.  
PUBLIC WORKS – Scott Ketchmark  
7. Is there a sufficient amount of parking spaces? The narrative indicates up to 5 employees 
may be working at one time. 
If you have any questions regarding these comments or would like to set up a follow-up meeting 
or call, please feel free to contact my office.

Engineering 
Development Services 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: 
Black Rock Coffee Site Plan Review  
DATE: 
08-22-24 
 
Below are the Engineering Department’s comments for the above referenced submittal provided 
in August 2024. These items will have to be addressed prior to the Planning and Zoning 
Meeting. 
 
1. The second from last paragraph of the Narrative states that “this project (Black Rock 
Coffee) will be constructed in a single phase”. Is the developer purchasing the entire 2.2 
acre property with plans for a second phase for the portion to the north or are they just 
purchasing the portion that includes the Black Rock Coffee site? 
 
The below items will have to be addressed during the Construction Plan Submittal. 
 
Requests for Design Exceptions 
2. Requests for Design Exceptions: 
a. DE#1 – Reduced distance from Driveway to Intersection – This request has been 
approved.  
b. DE#2 – Offsite Drainage will not be Routed Onsite – This request has been 
approved. The site is responsible for providing enough volume to retain the 
drainage from the site, the adjacent half right of way of Acoma Drive and the full 
roadway width of GAFR along the project frontage. The site is not being required 
to route the offsite drainage into the onsite basin(s). 
Narrative 
3. None 
 
Site Plan 
4. Provide name and mailing address of developer/owner. 
5. Provide the Lot Coverage of the parcel.  
6. Site Notes 
a. Note 1 - The proposed driveways shall be per MAG or City details. Stop signs are 
recommended at the driveways. Provide dimensions to verify that the proposed 
driveways have a minimum throat of 50 feet. 
b. Note 3 – The trash enclosure shall meet the minimum dimensions per City Detail 
EM-113. 
7. The ADA parking space shall be van accessible and signed accordingly.

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8. Show and label the building setbacks on all plans. The setbacks are 5 feet for all yards for 
Zone UC. 
9. Show the sight distance requirements at each driveway per City Detail EM-158.  
10. The proposed Acoma driveway appears to encroach on to the property to the west. An 
easement from the neighboring property will be required for this to remain or the 
driveway shall be adjusted accordingly. 
11. Parking spaces shall be striped with a minimum of 4-inch painted lines. 
12. 6-inch MAG type curbing is required around all driveways and parking lots. Curb that 
carries drainage shall include a gutter. The curbing shall be no closer than 3 feet to any 
property line. 
13. Any fire lane/emergency access road shall be 26 feet wide and designed to handle 75,000 
lbs. A Geotechnical Report will be required for this project and it should provide a 
recommended design section for this access road. 
14. Provide a 20 foot wide template to show how emergency vehicles will maneuver through 
the site, using an inside radius of 19.5 feet and an outside radius of 45 feet.  
15. Remove and replace the existing sidewalk along Acoma Drive and GAFR with a 6-foot 
wide sidewalk. Additional right of way may need to be dedicated along GAFR to 
accommodate the wider sidewalk. 
16. Plans shall include applicable City Notes. Call out MAG, City, etc. details to be used. 
Use the City’s Design & Development Standards Manual (DDSM) as a guide for the final 
design. 
 
Preliminary Grading & Drainage Plans (Separate Grading Plans were not provided but the 
below items have been provided as a guide for the future Civil Plan submittal) 
17. Side slopes adjacent to the public right of way, areas where pedestrian access is permitted 
and within Public Utility Easements (PUE) 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.  
18. Verify the slope does not exceed 2% in any direction within ADA parking spaces. 
19. For each basin/underground pipe, provide the High Water Level (HWL), bottom 
elevation, volume required, volume provided and overflow elevation. Also show the 
location and elevation of the low outfall of the lot. 
20. The finished floor elevation for the proposed building is required to be a minimum of 12 
inches above the 100-year high-water level of any adjacent retention basin and 14 inches 
above the ultimate outfall of the site. 
21. Any proposed retention basins shall be located a minimum of 4 feet away from any 
structures and shall not be located within any building setbacks, easements or fire 
lanes. It is recommended to provide as much separation between the proposed 
underground retention pipe and the proposed building as possible. 
22. The site is responsible for providing enough volume to retain the drainage from the site, 
the adjacent half right of way of Acoma Drive and the full roadway width of GAFR along 
the project frontage. The site is not being required to route the offsite drainage into the 
onsite basin(s) per Design Exception #2.  
 
Preliminary Utility Layout (Separate Utility Plans were not provided but the below items have 
been provided as a guide for the future Civil Plan submittal) 
23. If multiple buildings will be placed at this location, a water main loop shall run through 
the parcel, connecting to the mains in both GAFR and Acoma Drive. 
24. Water valves shall be placed approximately every 500 feet and at locations so that the 
maximum number of hydrants to be out of service is two.

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25. Water meters shall be located within the right of way and backflow preventers shall be 
located on private property but not within the PUE.  
26. A new public hydrant shall be placed at the shared property line of APN 501-33-009Z 
and 501-33-116B. 
27. The number of onsite hydrants will be determined by the Fire department. Any on site 
hydrants will be private.  
28. Any hydrants within the project site will be private and painted “Safety Red” and any 
within the right of way will be public and painted “Safety Yellow” per City Detail EM-
360. All hydrants require markers per MAG Detail 122. 
29. Hydrants require a minimum clearance of 6 feet per City Details EM-361 and 362. 
30. The existing sanitary sewer manhole that the proposed sewer will tie into shall receive an 
epoxy coating per City Detail EM-101-12. 
31. The proposed sanitary sewer will be private and any manhole covers shall be labeled as 
“Private Sewer”.  
32. The proposed sewer service lines shall be a minimum of 6 inches in diameter and require 
a backwater valve per City Detail EM-442. 
33. Show utility horizontal and vertical clearance information per MAG Detail 404 and City 
Detail EM-402.  
34. Per City Code Section 155.057, all overhead utility lines, 13kV and under, along the west 
property line, shall be placed underground. This includes all electrical, communication, 
cable, etc. facilities. This may require the undergrounding beyond the site boundary to the 
next convenient power pole or junction element. 
35. Provide onsite exterior lighting.  
36. A Photometric Plan will be required that addresses the following: 
a. Any lighting used to illuminate an off-street area shall be arranged so as to deflect 
light away from any adjoining residential zone or from the public streets. The 
source of lights shall be hooded or controlled in some manner so as not to light 
adjacent property. The foot candles generated from the proposed site shall be 0.0 
at any residential property lines. 
b. Any light or combination of lights which cause light on a public street, other than 
lights specifically intended for that purpose, shall not exceed one foot candle as 
measured from the center line of the street. Show the foot candles along the 
centerline of Acoma Drive and GAFR to verify that the proposed lighting will not 
exceed the maximum limit. 
37. A streetlight is required at the Acoma driveway. 
 
Preliminary Landscape Plans 
38. Add City Landscaping and Irrigation Notes (City Detail EM-101-4) to the plan set. 
39. Landscape Key Notes 
a. Key Notes 15 & 16 – Why are these items noted as temporary? 
b. Key Note 17 – The barricades shall be per MAG Detail 130. 
40. The northwest-southeast roadway is Grand Avenue.  
41. Show the sight distance requirements per City Detail EM-158 at both proposed driveways 
and at the west and south legs of the Acoma/GAFR intersection. Verify that landscaping 
will not block any views. 
42. All plantings at maturity shall maintain a minimum of 6 feet of clearance from all fire 
hydrants and fire suppression devices per City Detail EM-361. 
43. No walls or trees shall be placed within the proposed Public Utility Easement (PUE).  
44. Trees shall not be placed within 5 feet of any City curb or sidewalk or within 6 feet of 
any public utility.

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45. Decomposed granite or other approved dust control measure shall be used within the 
temporary basin. 
46. Irrigation plans will be required. 
 
Exterior Elevations  
47. These plans should include dimensions and a description of the exterior materials to be 
used. 
 
ALTA Survey 
48. The ALTA Survey is older than 6 months and shall be updated. 
49. The northwest property line is labeled as 300.07” instead of 300.07’. 
50. The developer may want to verify with APS the required width of the electrical easement 
that runs along the southwest property line. 
 
Preliminary Drainage Report 
51. Section IV  
a. Section B - The full width of GAFR for the project frontage shall be included in 
the volume provided calculations.  
b. Section D - Although the City Code does allow for a percolation rate of 0.8 cfs, it 
should be noted that a rate of 0.1 cfs is recommended. 
c. Section D – It is noted that “if dry up can be achieved by direct percolation, then 
no drywells be installed”. Any basin over 1 foot deep will require a minimum of 
one drywell. 
52. Section V – MCFCD DDM Volume 1  was updated in 2023. The latest version of the 
City’s DDSM must be used which is currently 2024. 
53. Appendix 2  
a. Use the City Runoff Coefficients per City Code Section 155.054(B)(6)(a). 
Concrete = 0.95, roofs/asphalt = 0.85, grass = 0.15 and desert/rock lawn = 0.70.  
b. Using a Cw of 0.95 for Basin 1 is acceptable. The Cw for Basins 2 and 3 will 
need to be revised per City coefficients. 
c. Provide stage-storage or equivalent calculations for the provided basin volumes. 
54. Calculations for the proposed catch basin and associated storm drain will be required. 
55. Drywell calculations are required. 
56. A Final Drainage Report will be required.  
 
Preliminary Water/Sewer Report 
57. Section A – Use Commercial (retail) which is has a water demand of 125 gallons per 
1,000 sf per day and a wastewater demand of 75 gallons per 1,000 sf per day. 
58. Section B  
a. The City only allows a 50% reduction for fire flows although that will not be 
required here as the minimum fire flow for a 620 sf, Type V-B building is 1,500 
gpm. 
b. These calculations show the operational hours as 12 hours per day but the 
Narrative stated 5 am to 7 pm or 14 hours. 
59. Section C 
a. Please note that the final run of the sanitary sewer main must have a minimum 
slope of 1.00%. 
b. The conversion from gpd to gpm for Dry Weather Peak Hour Demand appears 
incorrect. The value should be 1.72 gpm. The Wet Weather PHD should be 
revised accordingly.

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60. Add Max Day Demand + Fire Flow to the calculations.  
 
Traffic Impact Analysis (TIA)  
61. Now that it has been requested that the Acoma driveway will be full access and a new 
driveway on GAFR is proposed, additional Design Exceptions will be required.  
a. DE#3 - City Code Section 154.103(C) requires a minimum corner clearance 
between driveways and street intersections to be 350’ for collectors when 
approaching an intersection. The proposed Acoma driveway only has 
approximately 215’ when approaching Via Camille.  
b. DE#4 - City Code Section 154.103(C) requires a minimum corner clearance 
between driveways and street intersections to be 350’ for collectors when 
approaching an intersection. The proposed GAFR driveway only has 
approximately 230’ when approaching Acoma.  
c. DE#5 - City Code Section 154.103(D) requires a minimum driveway spacing to 
be 150’ for collectors. The current GAFR driveway only has approximately 100’ 
separation from the Carniceria driveway to the north. 
62. Provide an exhibit showing the following distances, measured from nearest face of curb 
to nearest face of curb: (a) the distance between the proposed Acoma driveway and 
GAFR, (b) the distance between the proposed driveway and Via Camille and the 
distances associated with Comments 61b and 61c above. 
63. Are there any concerns with both driveways being full access. Any there any concerns 
with the GAFR driveway being full access while also being close to the Carniceria 
driveway? 
64. The Traffic Engineer provided the City with several designs of the striping of Acoma 
Drive between the Acoma driveway and Via Camille. Provide an analysis and 
justification for the proposed reduced storage and taper lengths for the left turns into the 
BRC site and Via Camille. 
65. Page 7 – Acoma Drive – It is noted that a left turn lane is not required but one is being 
proposed. 
66. An update to the TIA will be required with any future phases.  
 
Title Report 
67. No comments. 
 
Phase I Environmental Assessment 
68. Section 4.1 – Planning Department – The report notes the Zoning as M-U for mixed use. 
The General Plan shows this property within the mixed use land use but the Zoning is 
Urban Corridor (UC). 
 
Miscellaneous 
69. A Final Plat per Chapter 1, Section B-2 of the City’s Design & Development Standard 
Manual (DDSM) will be required prior to Certificate of Occupancy. The Plat shall show: 
a. Any right of way and easement dedications. 
b. Subdividing of lots and/or any cross easement/agreements to share access, 
parking, drainage, etc. 
c. An 8-foot wide Public Utility Easement along the frontage of both Acoma Drive 
and GAFR.  
d. A 1-foot Vehicular Non-Access Easement (VNAE) is required along the frontage 
of both Acoma Drive and GAFR, except at legitimate driveways.

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e. Any portion of the proposed driveways or sidewalk that encroaches on to the 
property will require a Pedestrian Access Easement (PAE).  
70. A Geotechnical Report will be required to provide asphalt/concrete pavement sections. 
Verify the proposed pavement sections can handle 75,000 lbs. for any fire access lane or 
more if the trucks entering and exiting the site will be heavier. 
71. 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. 
72. An Approval to Construction (ATC) or waiver will be required from MCESD for the 
water and sewer line extensions. A copy shall be provided to the City prior to the release 
of any Engineering permit. 
73. A Dust Control Permit from the County will be required prior to the release of any 
Engineering permit. 
74. A Stormwater Pollution Prevention Plan (SWPPP) will be required per the City’s SWPPP 
Guidelines document if the total area of disturbance is 1 acre or more. A Notice of Intent 
(NOI) from ADEQ will be required prior to release of any Engineering permit. 
75. Any cutting of the pavement in either Acoma Drive or GAFR 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.

PLANNING AND ZONING 
Development Services Department 
10000 N. El Mirage Road, El Mirage, Arizona 85335 
623-876-2996; Fax 623-876-4605; TDD 623-933-3258 
www.elmirageaz.gov 
 
 
Planning and Zoning Division 
Zoning Application Review Memorandum 
To: 
 
Steve Bowser   
From  
Jose A. Macias, Senior Planner 
 
 
Development Services Department, Planning & Zoning  
Re: 
 
 SP24-08-01 Black Rock Coffee   
Date:  
August 20, 2024 
Mr. Bowser,  
Please see the review comments from the Planning and Zoning Division for the zoning 
application mentioned above.  
SITE PLAN APPROVAL 
Narrative 
1. The narrative states “No access is planned on Grand Ave”, the site plan shows a 26 ft. 
drive access off Grand Avenue frontage road. Please review the narrative.  
2. Provide information on the development of the rest of the lot.   
Site Plan 
3. A final plat will be required to record the lot splits, easement, and any map of dedication 
before the certificate of occupancy is issued for the restaurant's use. A final plat 
application shall be submitted to the Zoning Division for processing and separate fees 
will apply.  
4. Sign permits will be required for the monument and business wall sign on the building.  
Final Landscape Plan 
5. Provide the quantity of the trees on the plant list.  
6. The final landscape plan shall be in conformance with the approved preliminary plan and 
any stipulated changes or additions and shall be approved by the Zoning Administrator or 
designee prior to the issuance of a building permit.  
7. All changes in landscape plans before, during, or after preliminary or final landscape plan 
approval and/or landscape installation shall be approved by the Zoning Administrator or 
his or her designee.  
 
ARS 28-8481 MILITARY LAND USE COMPATIBILITY 
8. The site is located outside the Luke Air Force Base (LAFB) Noise Contour Zone, and 
inside the Military Airport Territory Area and is not subject to review from LAFB for 
land use compatibility with ARS 28-8481. Since the site will be located inside the 
“territory in the vicinity of a military airport,” it will be subjected to approximately 165 
over flights per day. See the attached email from the Luke Air Force Base Community 
Initiative Team

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If you have any questions regarding these comments, please feel free to contact my office; at 
(623)876-2996 or jmacias@elmirageaz.gov.