Z2021017 BOS REPORT.PDF

Maricopa County — Formal (2021-12-08)

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December 8, 2021 
Z2021017 
Page 1 of 3 
Report to the Board of Supervisors 
Prepared by the Maricopa County Planning and Development Department 
 
 
 
Board Hearing Date: 
December 8, 2021 
 
Case #/Title:   
 
 
Z2021017 – Karso Landscape Material 
 
Supervisor District: 
4 
 
Applicant/Owner:  
 
Jack Gilmore, Gilmore Planning & Landscape Architecture / 
Phoenix Materials Inc.   
 
Request: 
Special Use Permit (SUP)to allow Landscape Material Storage 
& Sales in the Rural-43 Zoning District  
 
Site Location: 
Approx. 2,700 ft. southwest of the SWC of Happy Valley Rd. 
and 107th Ave., in the Peoria area. 
 
Site Size: 
Approximately 19.3 acres 
 
County Island Status: 
N/A 
Additional 
Comments: 
There is no known opposition. There are no outstanding 
concerns from reviewing agencies. The request is for a 
10-year Special Use Permit (SUP) to allow the continued 
operation of an existing landscape materials storage and 
sales facility in the Rural-43 zoning district.  
 
Commission  
 
Recommendation: 
On 11/4/21, the Commission voted 7-0 to recommend 
approval of Z2021017 subject to conditions ‘a’ – ‘g’:  
 
a. 
Development of the site shall be in conformance with the Site Plan entitled 
“Special Use Permit for Karso Landscape Material,” consisting of 1 full-size sheet, 
dated September 20, 2021, and stamped received September 21, 2021, except 
as modified by the following conditions. 
 
b. 
Development of the site shall be in substantial conformance with the Narrative 
Report entitled “Karso Landscape Material,” consisting of 11 pages, dated 
September 20, 2021, and stamped received September 21, 2021, except as 
modified by the following conditions. 
 
c. 
The applicant shall provide documentation of APS and SRP approval of final site 
plans prior to County approval of any future building permit(s) on the subject 
property.   
 
d. 
The following Planning Engineering conditions shall apply:

December 8, 2021 
Z2021017 
Page 2 of 3 
 
1. 
More detailed Grading and Drainage plans submitted for acquisition of 
building permits must indicate removal of the berms along the northern and 
southern site boundaries; and must indicate that the entire development 
site will drain to an onsite retention basin, excluding concentrated drainage 
corridors that convey offsite flows through the site. 
 
2. 
Retention basins must drain within 36 hours. 
 
3. 
At the time of application for building permits, the BFE must be calculated 
based on the profile contained in the FIS for the Agua Fria River. A 
floodplain use permit will be required concurrent with the required building 
permit(s). Habitable structures (office trailer) must be elevated to comply 
with the Floodplain Regulations for Maricopa County. 
 
4. 
Applicant is responsible for coordination of any offsite and/or intersection 
improvements that may be required with the City of Peoria due to the site’s 
proximity to their jurisdiction. 
 
5. 
Work/improvements within the power line easement on the site is subject to 
approval by the owner of said easement. 
 
6. 
Engineering review of planning and/or zoning cases is for conceptual 
design only. All development and engineering design shall be in 
conformance with Section 1205 of the Maricopa County Zoning 
Ordinance; Drainage Policies and Standards; Floodplain Regulations for 
Maricopa County; MCDOT Roadway Design Manual; and current 
engineering policies, standards and best practices at the time of 
application for construction. 
 
7. 
Based on the conceptual design nature of the information submitted, 
changes to the site layout may be necessitated by the final engineering 
design of the site’s drainage infrastructure. 
 
8. 
Detailed Grading and Drainage (Site Development) Plans must be 
submitted with the application for Building Permits 
 
e. 
This special use permit is valid for a period of 10 years and shall expire on 
December 8, 2031, or upon termination of the use for a period of 90 or more days, 
whichever occurs first. All site improvements associated with the special use permit 
shall be removed within 90 days of such expiration or termination of use.   
 
f. 
Noncompliance with any Maricopa County Regulation shall be grounds for 
initiating a revocation of this Special Use Permit as set forth in the Maricopa County 
Zoning Ordinance.  
 
g. 
The granting of this change in use of the property has been at the request of the 
applicant, with the consent of the landowner.  The granting of this approval allows 
the property to enjoy uses in excess of those permitted by the zoning existing on 
the date of application, subject to conditions.  In the event of the failure to comply 
with any condition, and at the time of expiration of the Special Use Permit, the

December 8, 2021 
Z2021017 
Page 3 of 3 
property shall revert to the zoning that existed on the date of application.  It is, 
therefore, stipulated and agreed that either revocation due to the failure to 
comply with any conditions, or the expiration of the Special Use Permit, does not 
reduce any rights that existed on the date of application to use, divide, sell or 
possess the property and that there would be no diminution in value of the 
property from the value it held on the date of application due to such revocation 
or expiration of the Special Use Permit.  The Special Use Permit enhances the value 
of the property above its value as of the date the Special Use Permit is granted 
and reverting to the prior zoning results in the same value of the property as if the 
Special Use Permit had never been granted. 
 
 
Presented by: 
 
Sean Watkins, Planner 
Reviewed by: 
 
Darren V. Gérard, AICP, Planning Services Manager 
 
Attachment: 
 
11/4/21 P&Z Packet (32 pages)  
 
 
Note: 
11/4/21 Draft P&Z Minutes are not available as of the writing of this report, but can 
be provided upon request later when available.

Z2021017 
Page 1 of 10 
Report to the Planning and Zoning Commission 
Prepared by the Maricopa County Planning and Development Department 
 
 
 
Case: 
Z2021017 – Karso Landscape Material 
 
 
 
 
 
Hearing Date: 
November 4, 2021 
 
Supervisor District: 
4 
 
 
 
  
 
Applicant: 
Jack Gilmore, Gilmore Planning & Landscape Architecture 
 
Owner: 
Phoenix Materials Inc.  
   
Request: 
Special Use Permit (SUP)to allow Landscape Material Storage & Sales 
in the Rural-43 Zoning District 
 
  
 
Site Location: 
Approx. 2,700 ft. southwest of the SWC of Happy Valley Rd. and 
107th Ave., in the Peoria area. 
 
  
Site Size: 
19.3 acres 
 
Density: 
N/A 
 
County Island:  
Yes (Peoria & Surprise) 
 
 
County Plan: 
White Tank / Grand Avenue – Open Space 
 
 
Municipal Plan: 
Peoria General Plan 2040 – Employment Business Commerce 
 
Municipal Comments: 
None received to date  
 
Support/Opposition: 
None known 
 
Recommendation: 
Approve with conditions

Z2021017 
Page 2 of 10 
Project Summary: 
 
1. 
The applicant, Jack Gilmore, Gilmore Planning & Landscape Architecture, on behalf of 
the property owner, Phoenix Materials Inc., requests a Special Use Permit (SUP) to allow 
the continued operation of an existing landscape materials storage and sales facility in 
the Rural-43 zoning district (MCZO Art. 1301.1.4). The facility will be operated by Karso 
Landscape Materials (Karso), a sub-entity of Phoenix Materials Inc. The subject property 
is parcel 201-22-008C, which comprises approximately 19.3 acres, located approximately 
2,700 ft. southwest of the southwest corner of the intersection of Happy Valley Road and 
107th Avenue, in the Peoria area. The subject property is fronted by 107th Ave. and 
Hatfield Rd. runs along the north property boundary. A section line coincides with the 
eastern-most property boundary, but it appears to have no significant effect on the 
current site plan (MCZO 1105.1.3.2). The entrance to the subject property is on 
Hatfield Rd., approximately 600 ft. west of 107th Ave. The entire subject property is 
covered by two parallel, 330 ft. wide powerline easements that run roughly east/west 
through the property. The north easement belongs to Salt River Project (SRP) and the 
south easement belongs to Arizona Public Service (APS). Apparent high voltage 
powerlines run overhead through the subject property with 2 lattice towers present in the 
middle of the subject property.  
 
2. 
According to the project narrative, the subject property is currently in use by Karso for 
landscape materials storage and sales, including an apparent office, stored bulk 
materials and grading on the eastern third of the property. The narrative also states that 
the eastern third of the subject property has been in use since 2002, apparently by several 
different parties. Staff finds that historic aerial photos show the first use of the site for 
apparent vehicle, equipment, truck and materials storage in 1998 with grading of the 
eastern third of the property occurring between 2000 and 2001 and the storage activities 
continuing to 2006. From 2006 to 2017 aerial photos show the subject property largely 
vacant with no apparent significant storage activities. The current materials storage and 
sales use appears to have begun in 2019 with increasing development intensity to today. 
Staff found no record of permitting that would have provided for the past and current 
uses. Staff also finds no current violations associated with the subject property.      
 
3. 
This SUP request addresses the development that has occurred on the subject property 
to date, including grading (for past and current storage, parking and maneuvering 
areas) and an existing 4 ft. to 5 ft. tall berm that runs along the west property boundary 
and the western two-thirds of the north and south property boundaries. Most of the berm 
will be removed to allow historic drainage flows through the site, although the portion 
that runs along the western property boundary will be retained. The applicant states, and 
aerial photos verify, that there is an existing, apparent 5 ft. tall chain link perimeter fence 
on the eastern third of the north property boundary (extending east from the entrance 
on Hatfield Rd.), on the entire east property boundary and on the eastern third of the 
south property boundary. All the existing fencing will be removed and 5 ft. tall 3-rail pipe 
fencing, with wire mesh, will be installed along the north, east and south property 
boundaries. Gated accesses will be provided at the northeast and west property 
boundaries for use by SRP to access their utility easement and facilities. Pavement will be 
installed along Hatfield Rd. from 107th Ave. to the main property entrance on Hatfield Rd. 
and on the primary access driveway extending south from the entrance to the proposed 
office, including customer parking areas and a driveway loop/return that includes a 
vehicle scale. The pavement will comprise milled asphalt compacted with a liquid

Z2021017 
Page 3 of 10 
asphaltic binder/emulsifier, which is the minimum treatment staff considers as pavement 
required for on-site parking and maneuvering areas (MCZO Art. 1102.7.1).  
 
4. 
A 24 ft. x 40 ft. (960 sq. ft.) office, including an ADA-accessible bathroom, and 30 ft. x 30 ft. 
(900 sq. ft) canopy are proposed in the southeastern quarter of the subject property for 
customer service and covered, outdoor, materials display. A vehicle scale is proposed 
just east of the office and a vehicle wash bay is proposed just west of the office with 
water provided by the on-site well. A vehicle maintenance and service area will be 
created in the southwestern quarter of the subject property using 5 Conex (i.e. shipping) 
containers (three 8 ft. x 40 ft. and two 8 ft. x 20 ft. containers) and a 24 ft. x 24 ft. fabric 
canopy, comprising a total of 1,856 sq. ft. of lot coverage. The maintenance activities will 
be for repair and service of Karso’s trucks and equipment only. The total proposed lot 
coverage is approximately 3,716 sq. ft. or 0.4% of the total 19.28-acre subject property 
where up to 25% lot coverage is allowed (MCZO Art. 503.5.4). 
 
5. 
Staff finds the 2,816 sq. ft. of combined office and maintenance area requires 1 parking 
space per 250 sq. ft. of floor area and the 900 sq. ft. of outdoor display area requires 
1 parking space per 5,000 sq. ft. (MCZO Art. 1102.1.4). Accordingly, a total of 13 standard 
parking spaces and 1 ADA-accessible parking space are required where 29 standard, 
parking spaces and 1 ADA-accessible parking space are proposed (MCZO Art. 1102.1.4).  
 
6. 
A material crushing operation is proposed between the proposed office and vehicle 
maintenance areas. Inert materials such as concrete and asphalt will be brought onto 
the subject property from construction sites and mechanically crushed to produce 
granular material for sale from the subject property. Crushing operations would take 
place as needed, from 8:00 a.m. to 4:00 p.m. The applicant states that the crushing 
operation area is at least 1,400 ft. from the nearest single-family residence. Staff agrees 
that according to the Assessor’s most recent (2021) aerial photograph the nearest 
residence is located approximately 1,400 ft. northeast of the crushing operation site, in 
the Tiera Del Rio Parcel 1 subdivision, which is in Peoria. The next nearest residence 
appears to be approximately 2,100 ft. to the southeast of the crushing operation site on 
County, Rural-43 designated property. Staff finds that all property within 1,400 ft. of the 
crushing operation site is vacant or apparently used for mining and similar activities, 
which would not be affected by noise generated on the subject property. The proposal 
includes two signs: A 24 sq. ft. business identification sign attached to the perimeter fence 
near the northeast subject property corner, and an 8 sq. ft. directional sign mounted on 
a 6 ft. tall post located near the entrance from Hatfield Rd.        
  
7. 
The proposal includes requests to modify two of the base Rural-43 development 
standards as well as deviations from the development standards that would typically 
apply under a permanent entitlement for the proposed activities. The first development 
standard modification request is for a 24 sq. ft. business identification sign located in the 
required front yard, which is not permitted by MCZO Art. 1402.1.1. Staff supports this 
request because the sign is necessary to advertise the business and the sign is consistent 
with the other standards of MCZO Art. 1042.1. The second development standard request 
is to not pave most of the internal employee parking and vehicle maneuvering areas 
where pavement is required (MCZO Art. 1102.7.1). Instead, the applicant proposes to 
surface these areas with dustproofed decomposed granite and to apply water as 
needed for dust suppression. Staff finds this request supportable because it is consistent 
with the Air Quality / Dust Control Permit (F006700) and because the applicant proposes

Z2021017 
Page 4 of 10 
to use recycled asphalt compacted with a liquid asphaltic binder/emulsifier to pave 
Hatfield Rd. from 107th Ave. to the subject property entrance, the on-site driveway from 
the entrance to the office, the customer parking area, driveway loop and the ADA-
accessible parking space and ADA-accessible path to the office. The material display 
area next to the office will be surfaced with pavers.  
 
8. 
The following table is included to illustrate and contrast the standards for the base zoning 
district with those proposed for the project (Note: proposed changes to base zone 
development standards are indicated in bold). 
 
Standard 
Rural-43 
Base Standards 
Proposed  
Standards 
Maximum Building Height 
30’ 
30’ 
Front Yard Setback 
40’ 
40’ 
Side Yard Setback 
30’ 
30’ 
Street-Side Setback 
20’ 
20’ 
Minimum Lot Width* 
145’ 
145’ 
Minimum Lot Area 
43,560 sq. ft. 
43,560 sq. ft. 
Maximum Lot Coverage 
25% 
25% 
Screening 
Solid 6’ tall   
5’ tall Pipe rail fence with wire 
mesh & 4’ tall berm (west side 
only) 
Signs** 
24 square feet, not 
located in a required yard. 
24 sq. ft. perimeter sign 
mounted on pipe rail fence 
located in front yard.  
8sq. ft. directional sign 
located at driveway entry 
from Hatfield Rd.    
Pavement*** 
Access, Driveway, Parking 
and Maneuvering areas  
Entrance drive & guest 
parking apply and maintain 
gravel recycled asphalt or 
other suitable material with 
liquid asphaltic 
binder/emulsifier. All other 
private drives finished with 
decomposed granite 
* MCZO Art. 503.5.2 
**MCZO Art. 1402.1 
***MCZO Art. 1102.7.1, Air Quality / Dust Control Permit (F006700)   
 
9. 
Typically, a permanent entitlement for a landscape materials storage, processing and 
sales facility of this kind would require, at minimum, a C-3 zoning designation 
(MCZO Art. 805.2.15) and the proposed materials crushing activity would likely trigger the 
need for an IND-3 zoning designation (MCZO Art. 903.2). The C-3 and IND-3 zones have 
similar “additional regulations” regarding screening and setback standards, which would 
require solid 6 ft. tall masonry screening at the property perimeter (including view-
obscuring access gates) with no outdoor commercial uses or enclosures encroaching 
into any required yard adjacent to any street and with no materials exceeding the height 
of the screening (MCZO Arts. 805.9.1 and 903.9.3). The applicant proposes to install 5 ft. 
tall, 3-rail pipe fencing with wire mesh along the north, east and south property

Z2021017 
Page 5 of 10 
boundaries (with transparent gates at the north, northeast and west accesses) and to 
maintain the existing 4 ft. to 5 ft. tall berm at the west property boundary. Stored materials 
would exceed the height of the pipe fence and berm by approximately 1 ft. (subject to 
APS and SRP safety requirements) and appear to extend into required yards at the west, 
south and east. The applicant states that a solid masonry screen wall would not 
effectively screen the subject property from the elevated property to the north and 
would restrict historic off-site storm water flows, which would be contrary to drainage and 
flood control standards, and the cost would be disproportionate to the anticipated, 
10-year SUP entitlement. Staff finds the proposed screening and on-site materials storage 
locations to be supportable because there are existing, apparently similar, outdoor 
mining and material processing activities on mining exempt properties located 
approximately 675 ft., and further, south of the subject property on 107th Ave. and 
because the requested SUP would be limited to a 10-year term. Furthermore, all the 
properties adjacent to the subject property are vacant or subject to apparent mining 
activities and 6 ft. tall solid perimeter walls would be largely ineffective for screening the 
property from adjacent properties, 107th Ave. and the nearest residences, which lie to 
the north of the subject property. The truck maintenance and material crushing activities 
would take place at least 1,400 ft. from the nearest residence and approximately 600 ft. 
from 107th Ave. The truck maintenance area would be screened by Conex containers on 
the west, south and east sides. Staff finds that the potential off-site noise and fugitive dust 
impacts related to the materials crushing activity would not be mitigated by perimeter 
screening, rather, the distance to existing residential uses, limited hours of operation and 
adherence to the stipulations of the Air Quality/Dust Control Permit appear to be 
satisfactory mitigation for the material crushing activity.  
 
Zoning & Jurisdiction Map (SUP Area Shaded Brown)

Z2021017 
Page 6 of 10 
2020 Aerial Photograph (Subject Property Outlined in Turquoise) 
 
 
Excerpt of Proposed Site Plan (North is to the Left)

Z2021017 
Page 7 of 10 
Existing On-Site and Adjacent Zoning / Land Use: 
 
10. 
On-site: 
 
Rural-43 / Landscape Materials Storage & Sales 
North: 
Rural-43 / Vacant  
South: 
Rural-43 / Vacant 
East: 
107th Ave. then Rural-43 / Vacant &  
 
107th Ave. then PAD / Single-family Residential (City of Peoria) 
West: 
Rural-43 / Vacant & Apparent Mining 
 
 
Utilities and Services: 
 
11. 
Water: 
 
On-site, Private Well 
Wastewater: 
On-site Septic 
School District: 
Peoria Unified School District #11 
Fire: 
Rural Metro 
Police:  
MCSO 
 
Right-of-Way: 
 
12. 
The following table includes existing and proposed half-width right-of-way and the future 
classification based upon the Maricopa County Department of Transportation (MCDOT) 
Major Streets and Routes Plan.  
 
Street Name 
Half-width Existing R/W
Half-width Proposed R/W 
Future Classification 
107th Ave. 
Varies 
Varies (no additional 
dedication required) 
Principal Arterial 
Hatfield Rd. 
NA 
NA 
NA 
 
Adopted Plans: 
 
13. 
White Tank/Grand Avenue Area Plan (Adopted: December 6, 2000): This plan identifies 
the subject site as having an Open Space designation. The open space category 
denotes areas best suited for open space recreation. It includes uses such as parks, 
recreation and scenic areas, and drainage. Residential development up to one (1) 
dwelling unit per acre is permitted in certain open space areas, provided development 
in environmentally sensitive areas line steep slopes, floodplains, and significant wildlife 
and plant habitats, is in compliance with all applicable federal, state and county 
regulations.  
 
14. 
City of Peoria General Plan 2040 (Adopted: December 2020): This plan identifies the 
subject site as having an Employment Business Commerce designation. This designation 
contains 
offices, 
warehousing, 
incubator 
space, 
mini-storage, 
research 
and 
development, and light industrial uses. Site planning should balance siting of buildings for 
visibility with appropriate screening of loading bays, truck access, storage areas and 
parking. Commercial uses which are complementary or supportive may be appropriate. 
 
Public Participation Summary: 
 
15. 
The applicant has complied with the Maricopa County Citizen Review Process with the 
required posting of the site and notification by first class mail to adjacent property owners

Z2021017 
Page 8 of 10 
within 300’ of the subject site. Staff is aware of no comments from agencies, including the 
City of Peoria.    
 
Outstanding Concerns from Reviewing Agencies: 
 
16. 
To date, staff has received no comments from reviewing agencies in opposition to the 
proposal, including the City of Peoria, APS and SRP. SRP did not respond to staff 
notification routing email dated March 12, 2021 and APS responded with no objection to 
the use in general, with the only concern being the presence of the 4 ft. to 5 ft. tall berm 
at the west property boundary because the typical maximum grade change allowed 
within an APS transmission easement is 2 ft., unless further study ensures “phase-to-
ground” clearance is within safety limits. In the narrative, the applicant states that they 
have met with APS and SRP and that both agencies will require copies of the final site 
plans for review and approval prior to construction. Accordingly, a condition of approval 
for this SUP is to require County verification of APS and SRP review and approval of the 
final site plan prior to approval of future building permit(s).   
 
Staff Analysis: 
 
17. 
Staff finds the requested SUP, including the proposed development standard 
modifications, appropriate and consistent with the surrounding Rural-43 zoning and 
existing uses. According to 2021 aerial photography all properties within 500 ft. of the 
subject property boundary are either vacant or apparently used for mining and similar 
activities that would not be affected by potential off-site noise emanating from the 
activities proposed on the subject property. Compliance with Air Quality/Dust Control 
Permit F006700 appears to provide mitigation of potential dust impacts emanating from 
the subject property. The on-site materials crushing activity will be at least 1,400 ft. from 
the nearest existing residence and would be limited to daylight hours (8:00 a.m. to 4:00 
p.m.), which appears to provide adequate mitigation for potential noise impacts. The 
proposed perimeter fencing at the north, east and south sides does not provide solid site 
screening, however, the SUP is limited to a 10-year term and Staff agrees that the cost of 
constructing a 6 ft. tall perimeter masonry screen wall would be an undue burden 
considering the limited SUP term.               
 
 
Recommendation: 
 
18. 
For the reasons outlined in this report, staff recommends the Commission motion for 
Approval, subject to conditions ‘a’ – ‘g’. 
 
a. 
Development of the site shall be in conformance with the Site Plan entitled 
“Special Use Permit for Karso Landscape Material,” consisting of 1 full-size sheet, 
dated September 20, 2021, and stamped received September 21, 2021, except 
as modified by the following conditions. 
 
b. 
Development of the site shall be in substantial conformance with the Narrative 
Report entitled “Karso Landscape Material,” consisting of 11 pages, dated 
September 20, 2021, and stamped received September 21, 2021, except as 
modified by the following conditions.

Z2021017 
Page 9 of 10 
c. 
The applicant shall provide documentation of APS and SRP approval of final site 
plans prior to County approval of any future building permit(s) on the subject 
property.   
 
d. 
The following Planning Engineering conditions shall apply:  
 
1. 
More detailed Grading and Drainage plans submitted for acquisition of 
building permits must indicate removal of the berms along the northern and 
southern site boundaries; and must indicate that the entire development 
site will drain to an onsite retention basin, excluding concentrated drainage 
corridors that convey offsite flows through the site. 
 
2. 
Retention basins must drain within 36 hours. 
 
3. 
At the time of application for building permits, the BFE must be calculated 
based on the profile contained in the FIS for the Agua Fria River. A 
floodplain use permit will be required concurrent with the required building 
permit(s). Habitable structures (office trailer) must be elevated to comply 
with the Floodplain Regulations for Maricopa County. 
 
4. 
Applicant is responsible for coordination of any offsite and/or intersection 
improvements that may be required with the City of Peoria due to the site’s 
proximity to their jurisdiction. 
 
5. 
Work/improvements within the power line easement on the site is subject to 
approval by the owner of said easement. 
 
6. 
Engineering review of planning and/or zoning cases is for conceptual 
design only. All development and engineering design shall be in 
conformance with Section 1205 of the Maricopa County Zoning 
Ordinance; Drainage Policies and Standards; Floodplain Regulations for 
Maricopa County; MCDOT Roadway Design Manual; and current 
engineering policies, standards and best practices at the time of 
application for construction. 
 
7. 
Based on the conceptual design nature of the information submitted, 
changes to the site layout may be necessitated by the final engineering 
design of the site’s drainage infrastructure. 
 
8. 
Detailed Grading and Drainage (Site Development) Plans must be 
submitted with the application for Building Permits 
 
e. 
This special use permit is valid for a period of 10 years and shall expire on 
December 8, 2031, or upon termination of the use for a period of 90 or more days, 
whichever occurs first. All site improvements associated with the special use permit 
shall be removed within 90 days of such expiration or termination of use.   
 
f. 
Noncompliance with any Maricopa County Regulation shall be grounds for 
initiating a revocation of this Special Use Permit as set forth in the Maricopa County 
Zoning Ordinance.

Z2021017 
Page 10 of 10 
 
g. 
The granting of this change in use of the property has been at the request of the 
applicant, with the consent of the landowner.  The granting of this approval allows 
the property to enjoy uses in excess of those permitted by the zoning existing on 
the date of application, subject to conditions.  In the event of the failure to comply 
with any condition, and at the time of expiration of the Special Use Permit, the 
property shall revert to the zoning that existed on the date of application.  It is, 
therefore, stipulated and agreed that either revocation due to the failure to 
comply with any conditions, or the expiration of the Special Use Permit, does not 
reduce any rights that existed on the date of application to use, divide, sell or 
possess the property and that there would be no diminution in value of the 
property from the value it held on the date of application due to such revocation 
or expiration of the Special Use Permit.  The Special Use Permit enhances the value 
of the property above its value as of the date the Special Use Permit is granted 
and reverting to the prior zoning results in the same value of the property as if the 
Special Use Permit had never been granted. 
 
 
Presented by: 
Sean Watkins, Planner 
Reviewed by: 
Darren V. Gérard, AICP, Planning Services Manager 
 
Attachments: 
Case Map (1 page) 
 
Site Plan (1 page) 
 
Narrative (11 pages) 
 
MCENG comment (5 pages) 
 
MCESD comments (1 page) 
 
MCDOT TIS Waiver (1 page) 
 
APS notification response (2 pages)

M
ARICO
PA CO
UN
TY
/
M
aricopa County Planning & Developm
ent - Phoenix, AZ
4
G
ross Acres: 19.3 approx.
G
enerated August 18, 2021 14:10 PM
Z2021017
Application Nam
e:
Legal Description
Karso Landscape M
aterial EDR
Applicant
Case Address
,
Jack G
ilm
ore for G
ilm
ore Planning & Landscape Architecture
Applicant Phone/Em
ail
Parcel Prim
ary:
602.266.5622
jgilm
ore@
getgilm
ore.com
M
ap scale 1:3,436
Supervisor District No.
LANDSCAPE M
A
TERIAL STO
RAG
E & SALES
5.3585 in

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
Revised September 18, 2021 
Page 1 
 
 
GILMORE  
PLANNING & LANDSCAPE ARCHITECTURE 
 
 
 
1.   Project Team 
 
 
 
 
  
Land Owner 
 
Applicant & Land Planner 
Phoenix Materials Inc. 
c/o Justin Curtis 
625 W. Deer Valley, Ste 103 - Box 181 
Phoenix, AZ 85027 
(602) 513-0835 
phoenixmaterials@live.com 
 
 
Gilmore Planning & Landscape Arch. 
Jack Gilmore, LA 
2211 North 7th Street 
Phoenix, Arizona 85006 
(602) 266-5622 
jgilmore@getgilmore.com 
 
 
 
 
Civil Engineer 
 
 
Ament Professional Services 
Kameron Tobin / Scott McMahon, PE 
18206 N 19th Ave.   Suite 2A 
Phoenix, AZ  85014 
(480) 542-0491 
kamerontobin@amentpro.com

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
Page 2 
 
GILMORE  
PLANNING & LANDSCAPE ARCHITECTURE 
 
2. 
Purpose of Request 
On behalf of Phoenix Materials Inc., (Owner/Operator), Gilmore Planning & Landscape 
Architecture in association with Ament Professional Services (Applicant) respectfully submits for 
consideration this application for a Special Use Permit (SUP) for Karso Landscape Material to 
allow the sale of various: sands, gravel, decomposed granite, boulders, and various precast 
pavers used for walks, patios, driveways, and other related building material.  In addition to the 
sale of this stockpiled material, Karso also requests the ability to crush inert construction material 
for resale.  Karso is requesting the County’s support to allow a concrete crusher that will breakup 
this material to a granular scale that can then be sold and used for construction base material.  
The primary benefit is to recycle this inert material for re-use and not buried in a landfill.  A water 
truck will be available for dust control.  
The Property includes 19.28 acres under the current ownership, Phoenix Materials Inc., and is 
zoned RU-43, the County’s holding zone.  It is located at 10701 W. Hatfield, or by proximity, at 
the southwest corner of 107th Ave and Hatfield Road in the unincorporated area of Maricopa 
County, refer to Exhibit 1 for the location of this property.  This use is identified in the Maricopa 
County Zoning Ordinance as a Special Use under Section 1301.1.22.- outdoor storage including 
wholesale and retail sales of landscape materials, storage rental yards, construction yards and 
similar, interim industrial uses, which represents the primary use under this SUP.  The secondary 
use under this SUP is the concrete crusher which will produce granular material, which is identified 
in Section 1301.1.4 as the “development of earth products”.  The SUP may be granted for a period 
not exceeding ten years, at which time Karso must apply for an extension.  This application 
requests the County’s support for a Special Use Permit.  The current RU-43 will remain, but with 
a Special Use Permit (RU-43 - SUP) for the storage and sale of landscape granular material, 
crushing and resale of inert construction material, and the open storage and sales of precast 
landscape material.  
2.1 Ownership 
The property owner is Phoenix Materials Inc.  The County Assessor has identified this 
property as 201-22-008C.  Phoenix Materials Inc created a sub-entity Karso Landscape 
Material who will be the on-site operator.  
2.2 Existing Land Use 
The major portion of the Property, the western two-thirds, is currently undeveloped and 
largely in its native condition.  The County’s historical photos indicate that the eastern third 
of the property has been in use since 2002.  This eastern portion has not been improved 
except for surface treatments for dustproofing.  It appears that there have been a number 
of users and most recently for the storage and sales of granular material.  There are two 
parallel powerline easements that each measure 330’ in width that cover 100% of the 
property.  SRP controls the north half, and APS controls the south half.  There are two 
existing towers that are adjacent and separated by a clear space of approximately 70’, or 
35’ north and south of their common easement boundary, refer to Exhibit 2 - Site Survey,

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
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PLANNING & LANDSCAPE ARCHITECTURE 
 
for the location of these power line easements, towers and overhead lines.  Prior to Karso 
Landscape Material, this property was used for a similar business that was storing 
landscape material for sale.  The Owner/Operator, Mr. Justin Curtis, met separately with 
APS and SRP to better understand their restrictions of land uses within their respective 
easement areas and under their overhead powerlines.  Following those discussions, Karso 
Landscape Material began their storage and sale of landscape material.  With a recent 
revelation that a SUP is required, Phoenix Material Inc. has retained GPLA and Ament 
Professional Services (Civil Engineer) to assist in that effort.  The surface area is relatively 
flat with natural grade falling from the north to the south at approximately 1-2%.   
From the entrance gate on Hatfield Road and continuing east to 107th Ave is an existing 
fence that also fronts onto 107th Ave and then continues west along the south property line 
to an alignment south of the existing modular office.  Beginning near this fence terminus is 
a 4-5’ berm constructed on-site that wraps the western two-thirds of the property ending 
near the north entrance gate on Hatfield Road.   
The entire site lies within a FEMA delineated floodplain along the Agua Fria River.  The site 
is classified by the Federal Emergency Management Agency (FEMA) as Zone ‘AE’, defined 
as an area inundated by 1% annual chance flooding, for which Base Flood Elevations 
(BFE’s) have been determined.  This designation also establishes the presence of a Special 
Flood Hazard Area that requires finish floor elevations to be above the Base Flood Elevation.  
A Preliminary Drainage Study has been prepared and updated by Ament Professional 
Services and submitted with this SUP Application. 
2.3 General Plan Designation 
The subject property is situated within a county island and within the future annexation 
boundary for the City of Peoria.  The Peoria General Plan 2040 has designated the area 
southwest of 107th Ave and Hatfield Road as Employment/ Business/ Commerce.  This 
proposed use appears to reflect the intended use of the property as a Business / Commerce 
Use.

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
Page 4 
 
GILMORE  
PLANNING & LANDSCAPE ARCHITECTURE 
 
3. 
Description of Proposal 
Access to and from the property must come from 107th Ave to Hatfield Road and to the property’s 
existing gated entrance drive located approximately 535’ west of the 107th Ave intersection.  
Towards the south end of this entrance drive is a 24’x40’ modular office for customer services 
that will include an ADA accessible restroom.  North of the office will be a display area for the 
presentation of material and customer parking is oriented in front of the office.  This access road 
and the eastern portion of the property has been in place and in use since at least 2002 or earlier.  
From this access road and extending to the 107th Ave frontage is an area that represents 
approximately one-third of the property.  This area will be the primary display and sales area for 
the various landscape material.  Karso Landscape Material intends to provide a wide variety of 
various sands, gravel, and a variety of decomposed granite in different colors and sizes, along 
with a collection of decorative boulders used for project landscapes and precast concrete pavers 
of differing sizes and colors.  A grade level scale will be installed to weigh loads.   
Extending west from this access drive are a series of proposed storage areas that will be graded 
and dustproofed.  Graded service roads will permit Karso to move stored material to the front 
display area.  As illustrated on the attached Site Plan, Exhibit 4, both APS and SRP have 
easements that cover the entire site.  These two power companies each have the management 
and maintenance responsibilities for these easement areas and they have reviewed this Site Plan 
and established the following land use restrictions.  
- 
The site plan notes the future installation of 2 additional towers and powerlines within the 
north half of the north SRP easement.  There is a tower set up area just north of the 
existing towers that is approximately 200’ in width, as well as 60’ wide wire set up areas 
situated between the landscape stockpiles.  These defined set up areas must remain open 
and cannot be used for any surface storage.   
- 
SRP has established their interest for a center service drive situated on the common 
boundary between these two powerline easements.  SRP is also indicating that they will 
install an access gate on the west side of the property to allow service access further west 
along their extended powerline corridor. 
- 
Both SRP and APS will require copies of the final site plan and improvement plans for 
their own design review and approval prior to construction of these improvements.

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
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September 18, 2021 
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PLANNING & LANDSCAPE ARCHITECTURE 
 
Notes 
1. A solid 6’ screen wall will not effectively screen views from the elevated property to the 
north, and will restrict the historic off-site storm flows.  The 5’ pipe rail fence with wire mesh 
provides an obvious deterrent restricting pedestrian and vehicular access, will facilitate the 
passage of historic off-site storm flow that crosses the property north to south, and will be 
more affordable considering a 10-year lifespan for the SUP.  
DEVELOPMENT STANDARDS
RU-43
RU-43 w/ SUP 
Proposed 
Maximum Building Height
30 ft.
30 ft.
Minimum Building Setbacks
    Front - 107th Ave
40 ft.
40 ft.
    Hatfield Rd. - North Street Side
20 ft.
20 ft.
    West - Rear Yard (Maintenance)
40 ft.
40 ft.
    South Side Yard
30 ft.
30 ft.
Minimum Lot Width 
145 ft.
145 ft.
Minimum Lot Area
43,560sf 
43,560sf
Maximum Lot Coverage
25%
25%
Lot Coverage  - As Shown 
4500sf / 839,410sf = .5%
Parking Required - Including 1 ADA
4
Parking Provided
28
Screening
Solid 6 ft. Tall Screen
5 ft. tall Pipe Rail Fence
(*MCZO Art. 1102.7.7)
with wire mesh, and 4 ft min
     Note 1.
berm (west side only)
Signage 
Not Allowed in any 
1 Perimeter ID Sign located 
Req'd yard  24 sq ft Max **
along 107th Ave, mounted on 
(**MCZO Art 1402.1.1 & 1402.1.3) a 5' Pipe Rail Fence - max.
     Note 2.
 copy area is 24sf.  Plus 
1 Directional Sign located 
at driveway entry off Hatfield
Pavement
Asphalt millings compacted with
Entrance drive & guest pkg -
a liquid asphaltic binder/
apply and maintain gravel
emulsifier ***
recycled asphalt, or other 
(*** MCZO Art. 1102.71)
suitabe material with liquid
     Note 3
asphaltic binder/emulsifier
All other private drives
finished with dec. granite.

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
Page 6 
 
GILMORE  
PLANNING & LANDSCAPE ARCHITECTURE 
 
2. Article 1402.4 permits two perimeter wall signs that shall not exceed 24 sq. ft., on a max. 6-
foot high sign wall.  This SUP will include one perimeter ID sign along the 107th Ave frontage 
and one directional sign at the driveway entrance off Hatfield Rd that will not exceed 8 sq. ft. 
on a 6-foot high sign post located outside the Site Visibility Triangle.    
3 Pavement will be installed along Hatfield Rd from 107th Ave to the entrance drive, and along 
the primary access drive from Hatfield Rd that will include the guest parking areas.  The 
pavement will consist of milled asphalt and a liquid asphaltic binder/emulsifier per County 
standards.  All other service drives on-site are company oriented for employee use only and 
will be dustproofed with a granular decomposed granite. 
 
3.1 Site Development - Improvements 
On-site development of the property will be limited to: 
a. the modular office (20’ x 40’), The guest parking area will have a dedicated and paved 
ADA parking stall with an ADA accessible path to an ADA accessible restroom per 
MCZO Art 1102.1.4 and footnote 2.  
b. extending water service onto the property (this may include a separate connection to the 
existing well as a non-potable source for washing crushed material and for the open 
wash bay for spraying / cleaning construction vehicles, 
c. installing a septic system, 
d. the primary access drive from Hatfield Rd and guest parking areas with be paved using 
milled asphalt and a liquid asphaltic binder/emulsifier per County standards.  All other 
service drives on-site are company oriented for employee use only and will be 
dustproofed with a granular decomposed granite.  
e. Dedication of ROW for Hatfield Road, if required.  The ROW and pavement width shall 
be coordinated with the MCDOT Staff.  The portion of Hatfield Road from 107th Ave to 
the Karso entrance drive will be paved using “Asphalt millings compacted with a liquid 
asphaltic binder/emulsifier”.  This pavement will extend on-site along the entire length of 
the guest portion of the access drive including the guest parking area and the ADA 
parking stall.  Details to be resolved with the MCDOT.  
f. 25’-ft. Sight Visibility Triangles have been illustrated on both sides of the access drive 
off the Hatfield Rd entrance.  These SVT’s establishes a maximum height of 2 ft. for any 
landscaping of other physical improvements including fencing.  
g. the display area for the sale of their material stockpiles shall be finished with ¼”- ½” 
minus decomposed granite to maintain an attractive and uniform surface finish.  
h. replace the existing fence and berm along the entire north, east and south property lines 
with a 5’ pipe rail fence with 1” wire mesh.  This will facilitate the historic flow of storm 
water runoff by allowing flows to pass through the fence.  This SUP is for 10 years 
(requested) and the cost for a 5-6 foot CMU Screen wall is hard to justify.  This pipe rail 
is relatively open, facilitates security observation, allows historic storm flow to easily 
pass through, and will be less visible.  The west side will retain the existing perimeter

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
Page 7 
 
GILMORE  
PLANNING & LANDSCAPE ARCHITECTURE 
 
berm, but a new gate will be installed for APS & SRP to allow their service trucks access 
to their overhead powerlines.  A drainage study has been prepared and submitted with 
this SUP application that considers the historic flow crossing through the property, while 
retaining on site storm flow in designated retention basins per the Preliminary Grading 
& Drainage Plans submitted with this SUP Application. 
i. 
Near the center of the property on the south side will be a maintenance and service yard 
to be available only to company trucks and equipment.  Three conex containers will be 
aligned around a concrete service pad to mitigate views.  These containers will be used 
for the storage of smaller equipment and tools used for servicing and maintaining the 
project trucks.  This area will be screened by existing tree massing and enhanced with 
additional native trees for visual separation and shade.  Karso’s inventory of company 
trucks and equipment include:  
- 
10 Dump Trucks, 1 service pickup, 2 front-end articulated loaders, and 4 skid -
loaders (bobcats).  Only these trucks and service equipment will be maintained by 
their mechanics. 
j. 
Near this maintenance area, Karso intends to locate a small rock crushing operation that 
will generate additional granular material for sale.  The inert material is characterized as 
construction debris such as concrete and asphaltic pavement, and typically arrives as 
spoils from a construction site.  This inert material has already been broken up as part 
of the demolition process from various construction sites.  This crusher will operate only 
during the daylight hours after 8:00AM and no later than 4:00PM.  The closest single-
family home is situated to the northeast at a distance of approximately 1,400 feet.  The 
granular material will be stockpiled and limited in height per APS requirements.   
k. Security systems and lighting may be installed as a future improvement.  Light poles will 
be limited to a maximum height of 18 feet, and light fixtures must comply with Section 
1112 of the County Zoning Ordinance for Outdoor Lighting.  Management of the security 
may be monitored from a remote location.   
l. 
Within the next 3-4 years, Karso is planning for additional improvements:  2 conex 
containers along with a low canopy with fabric cover for shading cars.  These two conex 
containers will be located immediately east of the first 3 conex containers.  On the north 
side of the office, Karso intends to install a similar canopy structure with a low fabric 
cover to shade their display area.  These canopy structures will be submitted for permit 
review and approval by Maricopa County and APS/SRP. 
m. Retention basins will be distributed around the property, but more towards the southeast 
corner to satisfy retention requirements for storm water runoff. 
n. Article 1402.4 permits two perimeter wall signs that shall not exceed 32 sq. ft., on a max. 
6-foot high sign wall.  This SUP will include one perimeter ID sign along the 107th Ave 
frontage with a maximum sign copy of 24 sq ft., and one directional sign at the driveway

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
Page 8 
 
GILMORE  
PLANNING & LANDSCAPE ARCHITECTURE 
 
entrance off Hatfield Rd that will not exceed 8 sq. ft. on a 6-foot high sign post located 
outside the Site Visibility Triangle.  The perimeter identification sign will be attached the 
pipe rail fence and located along the 107th Ave frontage outside the site visibility triangle.  
This sign and the directional sign will be processed separately from this SUP Application 
and designed to meet the County standards under Article 1402 and as modified with the 
SUP request.   
o. An Air Quality General Permit for ‘dust control’ has been issued to Karso Landscape 
Supply, Facility No. F006700, Permit No. P0007176, expiration date – July 31, 2022.  
3.2  Hours of Operation 
Karso Landscape Supply is open 7 days a week except for holidays.  Summer hours begin 
and 6:00AM and the entrance gate off Hatfield Rd is locked at 4:00PM.  Winter hours shift 
one hour, opening at 7:00AM and closing at 5:00PM.   
3.3  Karso Staff 
Karso Landscape Supply has twelve full time employees.  On-site parking is provided 
separate from the guest parking.   
 
4 
Relationship to Surrounding Properties 
North:  The area north of subject property is State Trust Land, undeveloped and zoned RU-
43.  There is no indication that any development is being considered.  At the northeast 
corner of the site, 107th Ave turns to the northeast creating a narrow frontage at the actual 
northwest corner of 107th Ave & Hatfield Rd.  At this location, there is an existing City of 
Peoria Sewer Lift Station servicing the Tierra Del Rio Community.  The lift station and the 
area extending to the north and east is within the City of Peoria jurisdiction and zoned PAD.   
Northwest:  At the northwest corner of the site is the intersection of Hatfield Road and 109th 
Ave alignment.  The area is privately owned and currently being mined for sand and gravel.  
Hatfield terminates at this intersection.  109th Ave does not appear to be dedicated and is 
more of a driveway located on State Land providing access for the sand and gravel 
extraction site.  The area is within the County’s jurisdiction and zoned RU-43. 
West:  the area immediately west is State Trust Land under County jurisdiction and zoned 
RU-43.  The same two powerline easements that cover the subject property continues west. 
South:  the approximate 20-acre area immediately south is also State Trust Land that is 
undeveloped, is in its native condition and zoned RU-43.  Continuing south is a large sand 
and gravel extraction and material processing site owned by CEMEX.

KARSO LANDSCAPE MATERIAL 
Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
Page 9 
 
GILMORE  
PLANNING & LANDSCAPE ARCHITECTURE 
 
East:  the area immediately east of 107th Ave is owned by SRP and is used for the extension 
of the same overhead powerlines that cross over the subject property.  This area is 
undeveloped, in its native condition, and under County jurisdiction zoned RU-43.   
 
Refer to Exhibits 1 and 3 that illustrate these existing and surround land uses. 
 
The granting of this SUP will have little to no impact on any of these adjacent properties.  Its prior 
use established a precedent and a local awareness of this land use.  The surrounding properties 
are essentially vacant and primarily influenced by the presence of the existing overhead 
transmission lines and their towers.  Relative to 107th Ave, the property is approximately 8’ below 
the intersection at Hatfield Road and 12’ below 107th Ave at the southeast corner.  This lower 
grade has placed the entire property within a Special Flood Hazard Area.  Except for property 
located to the northwest corner which is being mined for decomposed granite, the balance of the 
surrounding ownership is primarily State Land and Salt River Project.  It is the combination of 
these land use conditions that minimizes this SUP impact. 
 
5 
Location and Accessibility 
107th Avenue is an existing arterial providing regional access to and from the Project Site.  From 
107th Ave, users must circulate west along Hatfield Road to gain access to the property.  This 
access will be secured with a lockable gate, which will remain open during daytime business 
hours.  
6 
Circulation System 
On-site circulation is oriented for guests providing direct access to and from the sales office and 
the adjacent display area.  Guests will be directed to the office where they will park and review 
displayed material.  As arrangements are completed, the guests will then circulate to the scale 
where their ‘empty’ vehicle weight is measured.  Guests will then add/load material and return to 
the scale where their ‘loaded’ weight can be compared and purchases completed.  Only vendors, 
employees, and representatives from SRP and APS may access the western portion of the 
property.  Internal graded access roads will allow employees to access their maintenance facility, 
vendors to drop-off bulk material for storage and/or crushing, and SRP/APS to inspect the 
property and eventually begin construction of a second set of tower structures.  
 
7. 
Development Schedule 
The approval of this SUP will bring the current use into conformity with Maricopa County’s land 
use and development standards.  Additional improvements for the maintenance area, septic 
system, site drainage and retention areas, and landscaping will begin as soon as this SUP has 
been approved.

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Special Use Permit 
Project Narrative   Z2021017 
September 18, 2021 
Page 10 
 
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PLANNING & LANDSCAPE ARCHITECTURE 
 
Phase 1:  Improving the access roads, elevating the modular office, installation of the septic 
system, and site grading with retention basins will be completed within 9 months of the SUP 
Approval date.   
Phase 2:  The maintenance facility may be installed with the first phase, but certainly within 24 
months of the Board’s approval of the SUP.   
The expansion/extension of the service roads and material storage areas will respond to the 
market’s demand for the various types of building material.   
 
8. 
Public Utilities & Services 
Water service:  On-site well. 
Sewer service:  On-site septic.   
Police &Fire:  Maricopa County Sherriff’s Office and the Rural Metro Fire District 
respectively. 
Power:  APS 
Solid Waste:  Republic  
School District:  Peoria Unified School District No.11.  
Elementary:  Zuni Hills; 10851 W. Williams Rd, Sun City, AZ 85373 
High School:  Liberty High School, 9621 W. Speckled Gecko Dr., Peoria, AZ  85383 
 
 
 
9. 
EXHIBITS 
1. 
Aerial Vicinity Map 
2. 
ALTA Survey 
3. 
Context Plan with Site Photos 
4. 
Site Plan 
5. 
Grading & Drainage Plan

Bob Fedorka, PE 
Planning & Development 
301 W. Jefferson Ave., Suite 170 
Phoenix, Arizona 85003 
Phone: (602) 506-7151 
www.maricopa.gov/planning 
email address: 
Bob.Fedorka@maricopa.gov 
  
Maricopa County 
Planning & Development Department 
 
 
 
Date:    
September 29, 2021 
 
Memo To: Darren Gerard, AICP, Planning Manager, Department of Planning & 
Development 
 
Attn: 
Sean Watkins, Planner, Planning & Development Services 
 
cc: 
Michael Norris P.E., Engineering Manager, Planning and Development 
 
From: 
Bob Fedorka, PE, Engineering Supervisor, Planning & Development 
 
Subject:   
Z2021017 – SUP for Karso Landscape Supply 
APN(s): 
201-22-008C 
Engineering Review has reviewed the third plan and report submittal routed for 
review/uploaded on 9/21/2021, for the subject application and has the following 
comments: 
 
DRAINAGE PLAN REVIEW  
 
1. OFFSITE HYDROLOGY 
 
a. The plans have been revised to indicate removal of the berms along the 
north and south sides of the site. 
 
b. Based on the above, there are no further comments; see stipulations. 
 
2. ONSITE HYDROLOGY 
 
a. No further comments; see stipulations. 
 
3. ONSITE RETENTION 
 
b. No further comments; see stipulations. 
 
4. RETENTION DISPOSAL 
 
a. No further comments; see stipulations. 
 
5. CROSS SECTIONS 
 
a. No further comments.

Page 2 of 5 
 
 
 
6. FINISHED FLOORS (PADS) 
 
a. No further comments. 
 
7. TOPOGRAPHY 
 
a. No further comments. A new topographic survey has been prepared. 
 
8. FLOODPLAINS 
 
a. No further comments; see stipulations. 
  
9. EROSION SETBACKS 
 
a. This item does not apply to this application. 
 
 
FLOOD CONTROL DISTRICT REVIEW 
 
1. No further comments; see stipulations. 
 
PND TRANSPORTATION PLAN REVIEW 
 
1. No further comments; see stipulations. 
 
 
PND TRANSPORTATION PLAN REVIEW R/W INFORMATION  
 
1. 107th Avenue (south of Hatfield) (MCDOT Jurisdiction) 
a. Current Classification: Major Collector 
b. Future Classification: Principal Arterial 
c. Existing R/W:  
Varies 
d. Ultimate R/W:  
Varies (no additional dedication required) 
 
 
2. Hatfield Road (Private/Other R/W) 
a. Current Classification: NA 
b. Future Classification: NA 
c. Existing R/W:  
NA 
d. Ultimate R/W:  
NA

Page 3 of 5 
 
 
 
The following stipulations will apply: 
 
1. More detailed Grading and Drainage plans submitted for acquisition of building 
permits must indicate removal of the berms along the northern and southern 
site boundaries; and must indicate that the entire development site will drain to 
an onsite retention basin, excluding concentrated drainage corridors that 
convey offsite flows through the site. 
 
2. Retention basins must drain within 36 hours. 
 
3. At the time of application for building permits, the BFE must be calculated 
based on the profile contained in the FIS for the Agua Fria River. A floodplain 
use permit will be required concurrent with the required building permit(s). 
Habitable structures (office trailer) must be elevated to comply with the 
Floodplain Regulations for Maricopa County. 
 
4. Applicant is responsible for coordination of any offsite and/or intersection 
improvements that may be required with the City of Peoria due to the site’s 
proximity to their jurisdiction. 
 
5. Work/improvements within the power line easement on the site is subject to 
approval by the owner of said easement. 
 
6. Engineering review of planning and/or zoning cases is for conceptual design 
only. All development and engineering design shall be in conformance with 
Section 1205 of the Maricopa County Zoning Ordinance; Drainage Policies and 
Standards; Floodplain Regulations for Maricopa County; MCDOT Roadway 
Design Manual; and current engineering policies, standards and best practices 
at the time of application for construction. 
 
7. Based on the conceptual design nature of the information submitted, changes 
to the site layout may be necessitated by the final engineering design of the 
site’s drainage infrastructure. 
 
8. Detailed Grading and Drainage (Site Development) Plans must be submitted 
with the application for Building Permits  
 
Please contact me with any questions.

Page 4 of 5 
 
 
 
DRAINAGE PLAN REVIEW REFERENCES:   
 
The Drainage Regulations are listed in Section 1205 of the MCZO: 
https://www.maricopa.gov/documentcenter/view/272  
Maricopa County Drainage Policies and Standards Manual: 
https://www.maricopa.gov/DocumentCenter/Home/View/2369  
For Additional Information See: 
https://www.maricopa.gov/1635/Drainage-Review 
 
FLOOD CONTROL DISTRICT OF MARICOPA COUNTY REFERENCES:   
 
Floodplain Regulations for Maricopa County: 
https://www.maricopa.gov/DocumentCenter/View/630  
For Additional Information See: 
https://www.maricopa.gov/3847/Flood-Control-District  
 
PND TRANSPORTATION REFERENCES: 
 
Residential Driveway Guidelines 
https://www.maricopa.gov/documentcenter/view/362  
Roadway Design Manual 
http://www.mcdot.maricopa.gov/DocumentCenter/View/24883 
Maricopa County Resolution for ROW Permits 
https://www.maricopa.gov/documentcenter/view/364  
For Additional Information See: 
https://www.maricopa.gov/156/MCDOT  
 
PND STORMWATER QUALITY (SWPPP) REFERENCES: 
 
Storm Water Quality Management and Discharge Control Regulation 
https://www.maricopa.gov/DocumentCenter/View/6577 
Air Pollution Control Regulations Rule 310 
https://www.maricopa.gov/DocumentCenter/View/5354  
For Additional Information See: 
https://www.maricopa.gov/3980/Water-Sewage-Stormwater-Waste

Page 5 of 5 
 
 
 
Abbreviations Key: 
 
Drainage: 
 
DD =   
Department Directive (See: http://www.maricopa.gov/1911/Department-
Directives) 
MCZO = 
Maricopa County Zoning Ordinance 
DPSM =  Maricopa County Drainage Policies and Standards 
SSA =   
State Standard Attachment 
DDMV1=  Maricopa County Drainage Design Manual – Hydrology 
DDMV2 =  Maricopa County Drainage Design Manual – Hydraulics 
 
Flood Control: 
 
FRMC = 
Floodplain Regulations for Maricopa County 
 
PND Transportation: 
 
RDM =  
MCDOT Roadway Design Manual 
RDG =  
MCDOT Residential Design Guidelines 
MSRP =  MCDOT Major Streets and Routes Plan 
 
PND Storm Water: 
SWMDCR= 
Maricopa County Storm Water Quality Management and Discharge 
Control Regulation 
DDMV3=  Maricopa County Drainage Design Manual – Erosion Control 
APCR= 
Maricopa County Air Pollution Control Regulations – Rule 310

Water and Waste Management 
Division 
Subdivision Infrastructure & 
Planning Program 
1001 N. Central Avenue #150 
Phoenix, Arizona 85004 
Phone: (602) 506-0376 
Fax: (602) 506-5813  
TDD 602 506 6704 
Maricopa County 
Environmental Services Department  
DATE: 
February 5, 2021 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TO : 
Sean Watkins, Planning & Development Dept. 
 
 
Senior Planner 
 
 
 
FROM: 
Souren Naradikian, P.E. 
 
 
Senior Civil Engineer 
 
SUBJECT: 
SUP FOR KARSO LANDSCAPE MATERIAL. Z2021017 
 
The Maricopa County Environmental Services Department (MCESD) has received 
documentation request for a SUP FOR KARSO LANDSCAPE MATERIAL.   
 
Based on the submitted documentation, the purpose of this request is to obtain SUP 
FOR KARSO LANDSCAPE MATERIAL at APN # 201-22-008C. Privet well and septic 
system will provide potable water and sewer service, MCESD has concerns. NOID must 
be obtained prior to construction permit approval. 
 
Based on the above, MCESD raised no objections to the Planning & Development 
Department in in Accela Automation on February 5, 2021 and can allow the project to 
proceed at this time subject to the following stipulations: 
 
Stipulations:  
None. 
 
It should be noted that this document does not approve the referenced project.  
Comments are provided only as advisory to Maricopa County Planning and 
Development Department to assist staff to prepare a staff report.  Other Maricopa 
County agencies may have additional requirements. Final review and approval will be 
made through Planning and Development Department procedures. Applicant may 
need to submit separate applications to the Maricopa County Environmental Services 
Department for approval of proposed facilities regulated by the Department.  Review 
of any such application will be based on regulations in force at the time of application.

I:\TSM-Design Branch\Laxmikanth Narwa\Karso Landscape Material\Karso Landscape_TS Review Comments - Review1.doc 
 
 
 
MCDOT -- TRAFFIC ENGINEERING 
REVIEW COMMENT SHEET 
1 of 1 
Date: Mar 15, 2021 
Project Name: Karso Landscaping Materials Lot 
Location: Southwest corner of 107th Avenue and Hatfield Road 
MCDOT File No.: Z2021017 
 
Reviewer: Laxmikanth Narwa, P.E. (Texas) 
Phone No.: 602-506-8677 
Reviewer: Rajanikanth Thoutam, P.E. 
Phone No.: 602-506-8940 
Consultant:  Y2K Engineering, LLC. 
Project No.:   
Plans Sealed By: Christopher Williams, PE, PTOE Phone No:             Fax: 
 
Consultant Code: 
A = Will Comply        B = Deleted 
C = Consultant to Evaluate 
Item 
Number 
Sheet 
Number 
 
Comments 
Consultant 
Reply 
 
 
 
 
 
 
 
 
=  =  = 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1 
 
 
 
2 
 
 
 
 
 
 
 
 
=  =  = 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1st REVIEW (TIS) 
 
Consultant:  Please use the code and respond to each comment in the 
Consultant Reply Column.  This sheet is for our record, please answer every 
question and sign and date your acknowledgement or the plans will be 
sent back to complete the process.  Send back the marked-up plans and a 
new set of plans along with this comment sheet.  Thank you for your 
cooperation. 
=  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  =  = 
General Project Summary: 
 
The proposed Karso Landscaping Materials Lot is located on the southwest 
corner of 107th Avenue and Hatfield Road in Maricopa County, Arizona - just 
south of the City of Peoria’s City limit.  In the future this location could become 
a plant nursery with commercial visitors.  
 
The proposed development is anticipated to generate less than 100 trips 
during the peak hour, with 16 trips occurring during the weekday AM peak hour 
and 19 trips occurring in the weekday PM peak hour. 
 
 
General Comments: 
 
The project site is all within the City of Peoria’s limits.  Only 107th Avenue 
south of Hatfield road falls under MCDOT jurisdiction. The proposed project 
has apparently no significant impact on County road system. 
 
Review Comments 
 
No comments. 
 
Traffic Impact Statement is Approved. 
 
 
 
 
 
 
 
 
 
 
 
 
 
Signature: _____________________________________ Date: ___________ 
 
Use CODE 
"A", "B","C" 
in this column 
next to every 
comment. 
 
 
 
=  =  =  =

From:
James.Generoso@aps.com
To:
Sean Watkins (PND)
Subject:
RE: Notification Routing - Karso Landscape Materials - Special Use Permit Request- Z2021017
Date:
Thursday, March 18, 2021 1:44:23 PM
Attachments:
APS Easement 20010822919.pdf
Sean,
 
Our transmission line maintenance engineer as well as myself reviewed the documents uploaded under the case number for this project. We have
no problem with the proposed use in general. Our only comment/concern is that in the western portion of our easement, it appears from the
conceptual site plan that the applicant wishes to install a 5-6’ high berm generally crossing the APS line perpendicularly. The maximum grade
change that APS allows within our transmission easements is 2’, unless the applicant provides a study (modeling) to see how phase-to-ground
clearance is affected and to make sure it is still within necessary safety limits. The applicant would have to work with APS on that.
 
For clarification, the APS easement is not specifically labeled on their conceptual site plan, but does appear on the ALTA survey provided in PDF
pages 11-12 of their project narrative submittal. It is a 15’ wide easement running east-west along the northern portion of the property and is
referred to as Schedule B Item #7, the 2001-0822919 partial assignment. It is within the larger SRP easement. I have attached that document.
 
Thank you for the opportunity to review this project.
 
-James Generoso
 
From: Sean Watkins (PND) <Sean.Watkins@Maricopa.Gov> 
Sent: Wednesday, March 17, 2021 1:56 PM
To: Generoso, James <James.Generoso@aps.com>
Subject: FW: Notification Routing - Karso Landscape Materials - Special Use Permit Request- Z2021017
 
***CAUTION***
***CAUTION***
***CAUTION***
This e-mail is from an EXTERNAL address (Sean.Watkins@maricopa.gov). DO NOT click on links or open attachments unless you trust
the sender and know the content is safe. If you suspect this message to be phishing, please report it to the APS Cyber Defense Center at
ACDC@aps.com.
Hello Mr. Generoso,
I am sending this notification to APS because the proposal described below appears to be within your easement.
 
This e-mail provides the notification routing for the Karso Landscape Supply – Special Use Permit (SUP) request, case Z2021017
The subject property is 201-22-008C, in the Peoria area.
 
You can download the application materials by using the On-line Permit Manager and searching by case number, as follows:
 
https://accela.maricopa.gov/citizenaccessmcoss/
 
Under Planning Services select ‘Search Applications’
Enter the case number: Z2021017 and hit enter
A new window will appear, with the case information, click on the ‘Record Info’ to expand drop-down list, select ‘Attachments’.
 
The submittal documents are shown, click on the link with the file name to open.
 
Application Form
Site Plan
Narrative
Citizen Participation Plan
TIS
Site Photos
Deed
 
Please submit review comments at your earliest convenience.
 
Thank you,
 
Sean Watkins
Planner
Maricopa County Planning & Development Department
501 N. 44th Street, Suite 200, Phoenix, AZ 85008
Desk: 602-506-8150
sean.watkins@maricopa.gov

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