S2021027 BOS REPORT.PDF

Maricopa County — Formal (2022-04-06)

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April 6, 2022 
S2021027 
Page 1 of 1 
Report to the Board of Supervisors 
Prepared by the Maricopa County Planning and Development Department 
 
 
 
Board Hearing Date: 
April 6, 2022 
 
Case #/Title:   
 
 
S2021027 – Zanjero Trails Parcel 31       
 
Supervisor District: 
4 
 
Applicant/Owner:  
HilgartWilson, LLC / Maricopa Water District   
 
Request: 
Offsite Infrastructure Plat of Zanjero Trails Parcel 31, which 
comprises 422 residential lots and 48 tracts in the R1-6 RUPD 
PAD zoning district   
 
Site Location: 
Generally located Approx. 1,100 ft. west of the SWC of 
Glendale Avenue and Perryville Road, in the Buckeye area 
 
Site Size: 
Approximately 145 acres 
 
County Island Status: 
No  
Additional 
Comments: 
Staff considers this replat to be in substantial conformance 
with the approved Zanjero Trails Parcel 31 Preliminary Plat 
(S2021003). The applicant has routed a copy of the plat to all 
the municipalities within three miles of the subject property 
and to all intended utility providers. There were no objections 
to the request raised by any of these agencies. The plat meets 
all applicable subdivision regulations and zoning regulations 
of the R1-6 RUPD PAD (Z2005031 & Z2016072).  
 
Recording fees will be furnished at the time of plat 
recordation.  All requirements of the Maricopa County 
Department 
of 
Transportation, 
the 
Maricopa 
County 
Environmental Services Department, the Flood Control District 
of Maricopa County, and the Drainage Review Division of the 
Maricopa County Planning and Development Department 
have been met. 
  
Recommendation: 
Approval  
 
Presented by: 
 
Sean Watkins, Planner 
Reviewed by: 
 
Darren Gerard, AICP, Planning Manager   
 
Attachments: 
 
Letter to the Board of Supervisors (1 page)  
 
 
Reduction of Replat (6 pages) 
 
 
Narrative Report (8 pages) 
 
 
ADWR Certificate (3 pages)

2141 East Highland Avenue, Suite 250 ▪ Phoenix, Arizona 85016 ▪ 602-490-0535 
 
 
 
1    of    1 
 
August 9, 2021 
 
 
Maricopa County Board of Supervisors 
301 W. Jefferson, 10th Floor  
Phoenix, AZ 85003 
 
 
RE:  
Infrastructure Plat of Zanjero Trails – Parcel 31 
HILGARTWILSON Project No.:  2194 
 
 
Dear Board, 
 
 
This letter is to request the approval of the Infrastructure Plat of Zanjero Trails – Parcel 31. 
 
This parcel is being subdivided by: 
SBH ZANJERO TRAILS L.P. 
6720 N. Scottsdale Road, Suite 250 
Scottsdale, AZ 85253 
 
The plat was prepared by: 
HILGARTWILSON, LLC 
RLS# 32222: Brian J. Benedict 
 
This project is within 3 miles of the City of Buckeye, the City of Goodyear and the City of Glendale and the 
plat has been provided to them.  
 
 
Thank you, 
Diego Ortiz, P.E.  
 
Respectfully Submitted,   
HILGARTWILSON, LLC

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
“
”
’
INFRASTRUCTURE PLAT
OF
ZANJERO TRAILS - PARCEL 31
MARICOPA COUNTY, ARIZONA
CASE NUMBER S2021027
“
”
“
”
2/11/22

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
2/11/22

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
2/11/22

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
2/11/22

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
2/11/22

P: 602.490.0535 / F: 602.368.2436
www.hilgartwilson.com
2141 E. HIGHLAND AVE., STE. 250
PHOENIX, AZ 85016
2/11/22

INFRASTRUCTURE PLAT NARRATIVE  
FOR 
ZANJERO TRAILS - PARCEL 31 
 
SOUTHWEST CORNER OF THE GLENDALE AVENUE ALIGNMENT AND 
PERRYVILLE ROAD ALIGNMENT 
 
MARICOPA COUNTY, ARIZONA 
 
 
CASE #S2021027 
 
 
 
July 23, 2021 
 
Revised: November 15, 
2021 
Prepared For: 
SBH Zanjero Trails LP 
6720 N Scottsdale 
Road, Suite 250 
Scottsdale, Arizona 
85253 
Prepared by: 
HILGARTWILSON 
2141 E. Highland 
Avenue, Suite 250 
Phoenix, AZ 85016 
Phone: (602) 490-0535

ZANJERO TRAILS – PARCEL 31 
                                                       
         Infrastructure Plat Narrative 
    Table of Contents 
1.0 
PURPOSE OF REQUEST .............................................................................................................. 1 
2.0 
DESCRIPTION OF PROPOSAL ..................................................................................................... 1 
3.0 
RELATIONSHIP TO SURROUNDING PROPERTIES ....................................................................... 2 
4.0 
LOCATION AND ACCESSIBILITY .................................................................................................. 2 
             4.1       Circulation……………………………………………………………………………………………………………. 2 
4.1.1 Vehicular ............................................................................................................................. 2 
4.1.2 
Ultimate Roadway Network ............................................................................................... 2 
4.2 
Pedestrian .......................................................................................................................... 3 
5.0 
DEVELOPMENT SCHEDULE ........................................................................................................ 3 
6.0 
COMMUNITY FACILITIES AND SERVICES ....................................................................................3 
6.1 
Schools ............................................................................................................................... 3 
6.2 
Recreational Amenities ...................................................................................................... 4 
6.3 
Parcel Amenities ................................................................................................................. 4 
6.4 
Police and Fire Protection ................................................................................................. 4 
7.0 
PUBLIC UTILITIES AND SERVICES .............................................................................................. 4 
7.1 
Water Facilities ................................................................................................................... 5 
7.2 
Wastewater Facilities ......................................................................................................... 5 
7.3 
Dry Utilities ......................................................................................................................... 5 
7.4 
Drainage ............................................................................................................................. 6

Page 1 
 
1.0 
PURPOSE OF REQUEST 
 
Zanjero Trails – Parcel 31 (the Project, Property, or Site), part of Zanjero Trails Development 
Master Plan (DMP), is a proposed single family residential subdivision located on 
approximately 137 gross acres. The Project area is generally situated at the southwest corner 
of the Glendale Avenue alignment and Perryville Road Alignment in unincorporated Maricopa 
County. Refer to Vicinity Map in the cover sheet for Project location. 
 
The Project is located in unincorporated Maricopa County and is a part of Development Master 
Plan (DMP 2018005), approved by the Board of Supervisors on December 12, 2018 and 
Residential Unit Plan of Development (RUPD) and Commercial Unit Plan of Development 
(CUPD) Rezone with Planned Area Development (PAD) overlay (Case #’s Z2005031 and 
Z2016072), approved by the Board of Supervisors dated February 21, 2007 and February 15, 
2017 respectively. It should be noted that a portion of the Zanjero Trails - Parcel 31 (Parcel 
31-E), approximately 8.7 acres located at the southwest corner of the intersection of Perryville 
Road and Glendale Avenue was previously a part of Parcel 30 zoned as Rural Zoning District 
(RU-43). This portion of the Project recently went through a rezone process to include this area 
as part of Parcel 31 and change the zoning from Rural Zoning District (RU-43) to Single-Family 
Residential Zoning District (R1-6) (Case #Z2021056). A preliminary plat complying the rezone 
and associated stipulations has been submitted to the Planning and Zoning Commission. 
 
Zanjero Trails - Parcel 31 consists of final plats for parcel 31B, 31C, 31D, and 31E as well as 
an infrastructure plat. The infrastructure plat will define the parcel boundaries and dedicate 
the required easements and half street right-of-way for Perryville Road (Minor Arterial) fronting 
the eastern boundary of the Project and the northern half street right-of-way for Glendale 
Avenue (Arterial), from the intersection of the proposed Perryville Road alignment to the east, 
where it will connect to the current termination point of Glendale Avenue, as well as the 
southern fronting half street right-of-way for Glendale Avenue. The table below summarizes the 
Infrastructure Plat:  
 
Parcel Summary 
Phase 
Parcels 
      
     Use 
Parcel     
Area      
(ac) 
Lot 
Size 
# of 
Lots 
# of 
Tracts 
Infrastructure 
Plat* 
4 Parcels 
(31B, 
31C, 31D 
and 31E) 
       
 
      Various 
 
137.00 
 
N/A 
N/A 
N/A 
*Infrastructure Plat defines future parcel boundaries for Zanjero Trails Parcel 31. 
 
2.0 
DESCRIPTION OF PROPOSAL 
 
This narrative is for the Infrastructure Plat of Zanjero Trails – Parcel 31. As stated previously, 
the infrastructure plat will dedicate the required easements and half street right-of-way for 
Perryville Road (Minor Arterial) fronting the eastern boundary of the Project, the northern half 
street right-of-way for Glendale Avenue (Arterial), from the intersection of the proposed 
Perryville Road alignment to the east, where it will connect to the current termination point of 
Glendale Avenue, as well as the fronting half street right-of-way for Glendale Avenue and 
identify the boundaries for Parcels 31B, 31C, 31D, and 31E.

Page 2 
 
3.0 
RELATIONSHIP TO SURROUNDING PROPERTIES 
 
Zanjero Trails – Parcel 31 is bound by undeveloped desert land owned by the Maricopa County 
Water District to the north and east. The Project is fronted by the Glendale Avenue alignment 
to the north and the Perryville Road alignment to the east. The Beardsley Canal lies 
immediately to the west as well as the White Tanks Flood Retarding Structure No.3. Canyon 
View High School lies to the South of the Project.  Refer to the attached Vicinity Map in the 
cover sheet. 
 
4.0 
LOCATION AND ACCESSIBILITY 
 
The infrastructure plat will dedicate the required easements and half street right-of-way for 
Perryville Road (Minor Arterial) and the northern half street right-of-way for Glendale Avenue 
(Arterial), from the intersection of the proposed Perryville Road alignment to the east, where it 
will connect to the current termination point of Glendale Avenue. 
  
The main traffic access to Parcel 31 is provided from Perryville Road with three access 
locations all along Perryville Road. One from Glendale Avenue via Lamar Road and other two 
locations north from Bethany Home Road to the south of the Project via Marlette Avenue and 
Sierra Vista Drive respectively. The Loop 303 freeway is located approximately 3.0 miles east 
and will serve as an important transportation corridor for Zanjero Trails Parcel 31. Interstate 
10 lies approximately 4.5 miles to the south of the Zanjero Trails Parcel 31. As it provides 
connection to downtown Phoenix and beyond, I-10 will also serve as an important 
transportation corridor for the future developments.  
 
 
4.1 
Circulation 
 
4.1.1 
Vehicular 
 
A Traffic Impact Study (TIS) for Zanjero Trails Parcel 31 has been 
prepared by CivTech, dated August 2021. The TIS analyzes the impacts 
of the Zanjero Trails Parcel 31 proposed land use plan on the 
transportation network in the vicinity of the site. According to the TIS, 
the Project is anticipated to generate an estimated total of 3,910 daily 
trips when fully developed. This traffic disperses in such a way that it 
can be adequately accommodated by the internal and connecting 
arterial system. The TIS determines the number of lanes required at 
project build-out for major streets serving the development and 
provides recommendations related to traffic signage, signalization, and 
turn movements. Below is a summary of the recommended 
improvements to the connecting roadway system in conjunction with 
the Zanjero Trails Parcel 31 development. 
 
4.1.2 
Ultimate Roadway Network 
 
• 
Primary access to the community will be provided from the Perryville 
Road alignment at three proposed locations: One south from Glendale 
Avenue and two north of Bethany Home Road to the south of the 
Project. 
 
• 
Fronting half-street improvements to Perryville Road will be 
constructed from just north of Bethany Home Road and connects with

Page 3 
 
Glendale Avenue. This will be developed as an urban minor arterial 
street per the MCDOT Roadway Design Manual. 
 
• 
The fronting half street of Glendale Avenue, from the Beardsley Canal 
to the proposed Perryville Road Alignment, as well as the northern half 
street of Glendale Avenue, from the intersection from the proposed 
Perryville Road alignment to the current termination point of Glendale 
Avenue, will be constructed as part of the Project. This half-street along 
Glendale Avenue will be developed as an arterial street per the MCDOT 
Roadway Design Manual. 
 
• 
All internal roadways will be designed PER MCDOT Roadway Design 
Standards. The proposed local streets will have 50-feet of right-of-way 
and an attached sidewalk. 
 
• 
Entry roads are proposed to have a 70-feet right-of-way with a 10-foot 
landscape median and attached sidewalk. 
 
• 
Traffic signals is recommended at the intersection of Perryville Road 
and Bethany Home Road in order to effectively move traffic volumes. 
 
• 
A traffic signal should not be installed until one or more of the traffic 
signal warrants of the Manual on Uniform Traffic Control Devices are 
met. 
 
4.2 
Pedestrian 
 
Sidewalks on both sides of local and arterial street right-of-ways will provide pedestrian 
circulation. On arterial streets, the pedestrian paths/sidewalks will be set back from 
the curb and gutter and buffered by a landscape strip to separate the various modes 
of transportation, i.e., auto, bicycle, pedestrian. Pedestrian circulation will also be 
accommodated by sidewalks on all residential streets providing connections between 
the park site, open spaces, and neighborhoods. 
 
5.0 
DEVELOPMENT SCHEDULE 
 
As previously mentioned, the Project will be split into 4 single-family residential parcels which 
are all to be developed at the same time. In the event that the construction of any of the parcels 
is to be phased so they are not constructed all together, interim infrastructure would be 
provided so that each parcel can “stand alone” during the interim condition while the rest of 
the parcels catch up. 
 
6.0 
COMMUNITY FACILITIES AND SERVICES 
 
All necessary community facilities to service the Project, such as parks and amenities, will be 
provided by the development. 
 
6.1 
Schools 
 
Zanjero Trails is located entirely within the Litchfield Elementary and Agua Fria Union 
High School District’s Jurisdictional boundaries. The Project will be served by the Agua 
Fria High School District High School located south of the Property.

Page 4 
 
 
6.2 
Recreational Amenities 
 
The parcel will reserve ample open space with a shared amenity area designed for 
residents. A 3.6-acre park centrally located provides a core for shared activities to 
encourage interactions amongst the residents. This community open space and 
recreational areas will be constructed concurrently with the rest of the community in 
order to be enjoyed by future residents and used as a selling feature of the community. 
 
6.3 
Parcel Amenities 
 
Parcel Parks will be located in strategic open space areas where they may be most 
easily accessed by homeowners. Parcel Parks will include improvements such as 
pathways, playgrounds, ramadas, and useable turf areas. These parks are intended to 
be more heavily used by residents of the development for active play and gatherings. 
Passive Parks will be located in open spaces that serve as retention areas and 
connections throughout the development. Passive Parks will include improvements 
such as pathways and useable turf areas. 
 
6.4 
Police and Fire Protection 
 
Zanjero Trails - Parcel 31 is located within the Maricopa County Sherriff’s Office (MCSO) 
service area. The nearest Maricopa County Sheriff’s Department office are District 
Facility III, located at the southeast corner of Dysart and Bell Roads and District Facility 
II, located at the northeast corner of Dysart and Van Buren. 
 
Zanjero Trails – Parcel 31 is located within the Buckeye Valley Fire District service area 
for fire service. Will serve letter has been obtained from Buckeye Fire District and will 
be included with the submittal. 
 
7.0 
PUBLIC UTILITIES AND SERVICES 
 
All necessary utilities to serve the Project are currently available or will be brought to the site 
during development. Utilities and services for the Project will be provided by the following 
providers. A utility commitment table is provided below listing each of the utility providers: 
 
 
Utility Commitment Table 
Utility 
Provider 
Water 
EPCOR Water 
Sewer 
Liberty Utilities 
Electric 
APS 
Telephone 
Century Link 
Gas 
Southwest Gas Company 
Cable TV 
Cox Communications 
Police 
Maricopa County Sheriff's Department 
Fire 
Buckeye Valley Fire District 
Refuse 
Waste Management 
School District 
Litchfield Elementary School District 
Agua Fria Union High School District

Page 5 
 
 
7.1 
Water Facilities 
 
The Project is located within EPCOR Water’s Certificate of Convenience and Necessity 
(CCN) for water service and is within Zone 2 of EPCOR’s Agua Fria District. The Project 
will be served by EPCOR’s Water Plant #12, located approximately 2.5 miles southeast 
of the Project, south of Camelback Road and east of Citrus Road. Water Plant #12 
serves two pressure zones, Zone 1 and Zone 2, with two separate trains of booster 
pumps for each zone. The Project will be served by the Zone 2 pumps which will 
ultimately include five pumps, each having a flow of 1,500 gpm and a total dynamic 
head of 243 feet (approximately 105 psi). Water Plant #12 also contains one 1.5 MG 
storage reservoir, and the site has room for an additional two storage reservoirs of the 
same size for a projected ultimate build-out storage capacity of 4.5 MG. 
 
Existing water infrastructure within the Project vicinity includes 12-inch water lines 
along the Perryville Road alignment (east of the Project) and Perryville Road 
immediately to the southeast boundary of the Project adjacent to Canyon View High 
School extending northwest from Bethany Home Road. 
 
Water improvements for the Project will include a 12-inch water line extending along 
Perryville Road adjacent to the eastern boundary of the Project and an internal network 
of looped 8-inch water line connecting the existing 12-inch line along Perryville Road. 
This 12-inch line extends further north along the northern half-street of Glendale 
Avenue, which will be constructed as part of this development. This proposed 12-inch 
water main will have two points of connection to the existing 12-inch water line along 
Glendale Avenue and Perryville Road. Note that there will be no extension of the water 
line along the fronting half-street of Glendale Avenue; however, a stub will be provided 
for an extension to serve future development. 
 
7.2 
Wastewater Facilities 
 
The Project is located within Liberty Utilities’ (Litchfield Park Service Company) CC&N 
for wastewater service. The site was also previously added to Liberty’s MAG 208 area 
to treat wastewater flows through a MAG 208 Amendment for an area known as the 
Northwest Group territory. Wastewater flows from the Project will be routed to Liberty’s 
Palm Valley Water Reclamation Facility (WRF), located along McDowell Road and west 
of Litchfield Road, for treatment. The Palm Valley WRF has a treatment capacity of 
approximately 4.1 MGD and is currently being expanded for increased treatment 
capacity. 
 
The closest wastewater infrastructure within the Project vicinity consists of an existing 
8-inch gravity sewer main along Perryville Road Alignment southeast of the Project. The 
8-inch sewer main ties into an 18-inch sewer main which then upsizes to 21-inch and 
then a 24-inch regional sewer main as it routes wastewater flows to the Palm Valley 
Water Reclamation Facility. The Project will be served by an internal network of 
proposed 8-inch onsite gravity sewer mains. These mains will generally route flows 
from each parcel and tie into an 8-inch gravity sewer main along Perryville Road.   
 
7.3 
Dry Utilities 
 
Utility services to Zanjero Trails – Parcel 31 will include: phone service by CenturyLink 
or Cox Communications, natural gas by Southwest Gas, electrical by APS and cable 
television by CenturyLink or Cox Communications. Will serve letters will be provided 
from each.

Page 6 
 
7.4 
Drainage 
 
The area surrounding the Project generally slopes to the southeast. The Project is 
located within the regional Loop 303/White Tanks Area Master Drainage Plan Update 
study area. The White Tanks Flood Retarding Structure #3 (FRS No. 3) is located 
southwest of the Project and the FRS No. 3 Outfall Channel is adjacent to the western 
boundary. Both the FRS No. 3 and the Outfall Channel intercept all flows coming from 
the White Tank Mountains located to the northwest and eliminates regional offsite 
flows from reaching the western boundary of the Project. Drainage areas north of the 
Project site flow to the southeast towards the Perryville Road Wash located east of the 
site. More specifically, the offsite flows generated north of the Project are produced by 
the undeveloped desert land between the Glendale Avenue alignment and Northern 
Avenue alignment. The Glendale Avenue alignment currently has a dirt road with an 
elevated profile. As a result, localized offsite flows generated north of the roadway 
alignment are directed eastward towards the Perryville Road Wash before causing any 
impact to the northern boundary of the Project. 
 
The Project will propose a culvert crossing along the Glendale Avenue alignment as a 
part of Glendale Avenue improvements to allow for the runoff conveyed by the Perryville 
Road Wash to continue southward similar to the existing conditions. The elevations of 
the roadway will remain at a similar elevation to allow for the existing drainage pattern 
to be maintained. HILGARTWILSON will be going through the CLOMR/LOMR process to 
revise the floodplain at the Glendale Avenue crossing based upon the proposed culvert. 
The CLOMR/LOMR will also propose a temporary detention basin, north of the Glendale 
Avenue alignment to reduce the flow crossing the roadway and the appropriate culvert 
size will be determined. This CLOMR/LOMR will be independent of the Zanjero Trails 
Parcel 31 plan review process and approvals. No offsite flows impact the eastern 
boundary as this area slopes towards the southeast. 
 
Onsite flows will be conveyed to retention basins throughout the Project in appropriate 
locations. Retention volume equivalent to the 100-year, 2-hour storm runoff will be 
provided for all developed portions of the Project. Retention basins will generally be 
designed such that the total depth is 4 feet, with 3 feet of storage, and an additional 
foot of freeboard, and will dewater within the 36-hour limit. Additional safety measures 
will be implemented if retention basins exceed the maximum slope and depth. Existing 
flow patterns will be maintained, while offsite flows will not be comingled with onsite 
flows. All drainage design for the Project will be in conformance with the Planning and 
Development standards for Maricopa County and Section 1205 of the Maricopa 
County Zoning Ordinance.