501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301
Preliminary Plat Index Internet: www.maricopa.gov/planning 5/29/20
SUBMITTAL FORMS INDEX
Planning & Development
PRELIMINARY PLAT PROCESS
PRELIMINARY PLAT PROCESS & TIMEFRAME
PRELIMINARY PLAT APPLICATION
PRELIMINARY PLAT CHECKLIST
FILING DEADLINES AND HEARING DATES
WHAT TO EXPECT AT THE ONE STOP SHOP
Drainage Review
DRAINAGE REQUIREMENTS
Transportation
TRANSPORTATION REQUIREMENTS
Planning & Development
Department
PRELIMINARY PLAT
This packet can also be used for Modification of Condition/s and Time
Extensions to approved Preliminary Plats
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301
Preliminary Plat Process Internet: www.maricopa.gov/planning 10/30/19
SUBDIVISIONS
A subdivision is defined by ARS §32-2101. Any subdivision
within the unincorporated area of Maricopa County must
be approved by the Board of Supervisors prior to being
recorded. Approval of subdivisions occurs in two (2)
stages: Preliminary Plat and Final Plat.
APPLICATION
An application for a Preliminary Plat must be filed with the
Planning and Development Department (details are
attached). A pre application meeting is required.
TECHNICAL ADVISORY COMMITTEE REVIEW
The Technical Advisory Committee (TAC) is composed of
representatives of the County’s Planning, Transportation,
Drainage Review, Storm Water Quality, Parks and
Recreation, Library, Flood Control, and Environmental
Services Departments. Other comments may be supplied
by representatives from other County departments, fire
district, school district, City or Town, homeowner’s
association, or other interested parties.
After a complete application is submitted and accepted
by the Planning Department, staff will forward copies of
the application to members of the TAC. Staff will then
schedule the request for review by the TAC (see
attached schedule), and notify the owner or authorized
agent of the actual date and time of the TAC meeting.
Staff will provide the owner or authorized agent with
written comments from any reviewing agency unable to
attend the meeting.
POST-TAC REVIEW
Depending on the comments received at the TAC, the
application materials may need revisions. The owner or
authorized agent must submit revised materials, reflecting
the TAC comments, to the Planning and Development
Department, which will forward the revised materials to the
appropriate agencies. Once they are satisfied that the
technical requirements have been met (more than one re-
submittal may be necessary), the request will be scheduled
for public hearing by the Planning and Zoning Commission.
Please note that compliance with comments from TAC
and/or staff does not guarantee that the application will be
supported by staff or approved by the Commission.
PLANNING AND ZONING COMMISSION
The Commission will hold a public meeting for all interested
persons wishing to comment on the proposed Preliminary
Plat. The owner or authorized agent must attend this
meeting, and will be asked to comment on the
application, the staff report, and/or any comments that are
made during the public meeting. The Commission will either
approve or deny the request. Their action may or may not
concur with staff’s recommendation and may include
additional requirements. If a Preliminary Plat is denied, it will
be automatically forwarded to a Board of Supervisor’s
meeting for final determination.
Preliminary Plat approval is valid for a period of twenty
four (24) months from the date of Commission action. A
Preliminary Plat may be administratively extended for
twelve (12) months, if in the opinion of the Director,
satisfactory progress has been made towards completion
of the Final Plat. If any changes other than a time
extension to the original approval of the Preliminary Plat
by the Commission are proposed, an application for a
new Preliminary Plat will be required.
APPEALS
The conditions of approval of this Preliminary Plat may be
appealed to the Hearing Officer pursuant to ARS § 11-
832. Provide request for appeal to the Hearing Officer
Liaison at this address within 30 calendar days of the
administrative/ministerial approval date to schedule an
administrative hearing.
Planning & Development
Department
PRELIMINARY PLAT PROCESS
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301 (602) 506-3711 fax
Pre. Plat Process Internet: www.maricopa.gov/planning 10/30/19
* Approximate timeframe of 5 months
Planning & Development
Department
PRELIMINARY PLAT PROCESS AND TIMEFRAME
Submittal of application at front counter (One Stop Shop)
Technical Advisory Committee (TAC) meeting
(held within 4 6 weeks based upon availability)
P&Z hearing
(approximately 4 weeks following sign-off)
Assigned to planner & routed to reviewing agencies and
stakeholders
(approximately within 1 week of application)
(approximately 2 weeks)
Post TAC resubmittal
(within 2 weeks)
Review comments
(approximately 2 weeks
following resubmittal)
* 60 days
Application resubmittal
(at applicant’s discretion)
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301
Preliminary Plat Application Internet: www.maricopa.gov/planning 7/31/18
Preliminary Plat
Time Extension
Modification of Condition/s
APPLICATION MUST BE COMPLETED IN FULL AND ALL FEES ARE DUE AT TIME OF APPLICATION AND ARE NON-REFUNDABLE.
REQUEST
Title of Project:
Description of Request:
Number of Lots/Tracts/Parcels:
Gross Density per Dwelling Unit:
Existing Zoning District:
Related Case Number/s:
PROPERTY INFORMATION
Address (if known):
General location (include nearest city/town):
Gross acres/sq. ft.
Net acres/sq. ft.
Legal Description Section:
Township:
Range:
Assessor’s Parcel Number/s:
Subdivision Name (if applicable):
OWNER’S AUTHORIZED AGENT INFORMATION
Name:
Contact:
Address:
City:
State:
Zip:
Phone #:
Fax#:
E-mail Address:
PROPERTY OWNER INFORMATION
Name:
Contact:
Address:
City:
State:
Zip:
Phone #:
Fax#:
E-mail Address:
PROPERTY OWNER AND OWNER’S AGENT AUTHORIZATION
I (property owner)
authorize (owner’s agent)
to file this application on all matters relating to this request with Maricopa County. By signing this form as the property owner I hereby
agree to abide by any and all conditions that may be assigned by the Maricopa County Board of Supervisors, Maricopa County
Planning and Zoning Commission, or Maricopa County Planning and Development Department staff as applicable, as part of any
approval of this request, including conditions
, development agreements, and/or any other requirement that may encumber or
otherwise affect the use of my property.
PROPOSITION 207 WAIVER
The property owner acknowledges that the approval being sought by this application may cause a reduction in the existing rights
to use, divide, sell or possess the private property that is the subject of this application.
The property owner further acknowledges
that it is the property owner who has requested the action sought by the filing of this application. Therefore, with full knowledge of
all rights granted to the property owner pursuant to A.R.S.§12-1132 through 1138, the property owner does hereby waive any and
all claims for diminution in value of the property with regard to any action taken by Maricopa County as result of the filing of this
application.
Property Owner Signature:
Date:
VERIFICATION OF APPLICATION INFORMATION
I certify that the statements in this application and support material are true. Any approvals or permits granted by Maricopa
County in reliance upon the truthfulness of these statements may be revoked or rescinded.
Owner or Authorized Agent Signature: Date:
CASE INACTIVITY
Ca
ses which are not active within six (6) months will be considered inactive and closed by staff. A letter addressing the inactivity will
be sent to the owner’s authorized agent or property owner with notification of the case to be closed within thirty (30) days. To pursue
entitlement after the closing of the case, a new application and associated fees will need to be filed.
Planning & Development
Department
PRELIMINARY PLAT APPLICATION
Applications submitted to the Maricopa County Planning & Development Department shall include all of
the exhibits and information listed in this checklist. This information is required by the Maricopa County
Subdivision Regulations and/or department staff to adequately review the proposal. Applications will not
be accepted for processing until the following information has been provided. Application(s) determined
to be incomplete shall not be processed by staff. Additional information and details may be required after
review by the Technical Advisory Committee (TAC).
1. APPLICATION:
____ A.
Completed and signed application - 2 copies
____ B.
Proof of ownership (recorded deed unofficial copy is acceptable) - 1 copy
____ C.
Electronic copies of application materials saved as Adobe PDF files 1 CD or jump drive.
Example Narrative Report should be saved as NARR-RPTS-1.pdf
Application Document
Required Naming Convention for the
Adobe PDF documents
Completed Application
APPL-FORM-1
Official recorded or unofficial deed
DEED-DETL-1
Preliminary Plat
PRPL-PLAN-1
Narrative Report
NARR-RPTS-1
Drainage Report/Plan (if applicable)
DRAI-RPTS-1
Traffic Impact Study (if applicable)
TRAF-RPTS-1
2. PRELIMINARY PLAT INFORMATION: Plat must be to scale (Engineer’s Scale) and be at minimum
submitted with the following information. Please see Maricopa County Subdivision Regulations for
additional requirements. Provide 2 collated, folded, and stapled copies of large-scale plans (not to
exceed 24” x 36” in size), and 1 copy of an 8 ½” x 11” reduction of each page.
____ A.
Identification of plat by name, location, case/tracking #, and general legal description
____ B.
Plat dimensions/boundaries, including reference by dimension and bearing to section
and quarter section corners
____ C.
Clearly identify boundary of parcel(s) to be subdivided
____ D.
Complete legal description
____ E.
Date of plat and revision dates
____ F.
Vicinity map with location of plat
____ G.
North arrow and scale (written and graphic)
____ H.
Street names and right-of-way dimensions, existing and proposed
____ I.
Name, address, phone, and e-mail for the Property Owner, Developer/subdivider and
Engineer/Surveyor
____ J.
Site Summary Table:
- Size (gross and net) in both acres and square feet
- Number of lots and tracts
- Density
- Zoning district (existing and proposed, if applicable)
- Tax Assessor parcel numbers
- Projected population and number of families
- Total area of open space
____ K.
NOTES section, indicating:
- Project description, indicate uses and types of units proposed
Planning & Development Department
PRELIMINARY PLAT APPLICATION
SUBMITTAL CHECKLIST
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301
Preliminary Plat Checklist Internet: www.maricopa.gov/planning 10/30/19
Planning & Development Department
PRELIMINARY PLAT APPLICATION
SUBMITTAL CHECKLIST
- Statement regarding existing contours and proposed grading [example: This site will be
mass-graded (note: no mass-grading of hillside unless relief is granted through an RUPD)
- Identify hillside lots
- Sight visibility triangles (SVT’s): No structure, landscaping, fence, wall or terrace or other
obstruction to view in excess of two feet in height as measured from the centerline of
the street shall be placed within the required 25-foot visibility triangles.
- Signage shall conform to the Maricopa County Zoning Ordinance, unless modified with
an RUPD.
- All outdoor lighting shall conform to Section 1112 of the Maricopa County Zoning
Ordinance.
- All roads shall be built to Maricopa County Department of Transportation standards.
- The ________________ Homeowner’s Association will have the responsibility for
maintaining the common areas to be noted as tracts or easements including
landscaping and drainage facilities in accordance with the approved plans.
- Vehicle Non-Access Easement (VNAE): An easement prohibiting vehicular access (non-
access easement) from the street side of double frontage lots is required. The minimum
width for said easement is one foot.
- Identify lots and or tracts within floodplain
____ L.
Table for each phase of development specifying the following:
- Lot number, lot area, lot width, total square footage
- Identify any lots or parcels reserved for schools or fire/police
- Identify each tract, lot parcel with total square footage
- Include the RUPD table if applicable
- Utility commitment table listing all proposed utility services (water, sewer, electric, gas,
telephone, cable TV, refuse, police, fire and school district)
____ M.
Location of all utilities and recorded/proposed easements
____ N.
Show the location of all proposed and existing fire hydrants, water supply, storage, and
pressures.
____ O.
Name and address of the owner of all adjacent un-subdivided property, along with the
respective parcel numbers
____ P.
Name, book, and page number of all adjacent subdivisions
____ Q.
Existing and proposed contours (extending 25’ beyond perimeter)
____ R.
Identification of all water and drainage features existing and proposed
____ S.
Proposed retention/detention facilities
____ T.
Typical lot layout for interior and street-side lots
____ U.
If applicable Identification of UPD characteristics, including a table comparing the
base zoning district standards to the proposed UPD standards (see example in Zone
Change packet)
____ V.
Sight visibility triangles should be shown on both the plat and landscape plan
____ W.
Location of all terrain with greater than 15% slope (shaded)
____ X.
Location and height of all perimeter walls
3. NARRATIVE REPORT: Explanation of the project, 2 copies – 8 ½” x 11” paper. Underlined wording
indicates a section heading.)
____ A.
Title Page include project name, general location, case/tracking #, and vicinity map
____ B.
Purpose of Request
____ C.
Description of Proposal
____ D.
Relationship to Surrounding Properties
____ E.
Location and Accessibility
____ F.
Circulation System (on & off-site) include proposed improvements or dedications
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301
Preliminary Plat Checklist Internet: www.maricopa.gov/planning 10/30/19
Planning & Development Department
PRELIMINARY PLAT APPLICATION
SUBMITTAL CHECKLIST
____ G.
Development Schedule (phasing)
____ H.
Community Facilities and Services (school district, parks, amenities, etc.)
____ I.
Public Utilities and Services (refuse, sewer, water, police, fire, etc.)
____ J.
Conceptual Landscaping and Amenities Plan
Include the proposed location for all landscaping material, and shall not include
infrastructure or construction details, but provide the location of retention
stormwater basins, locations of any easements, and backflow preventers and
amenity site lighting.
Identify a schedule of all plants, which shall be identified by common and
botanical name and shall clearly indicate the quantities and sizes of each to be
installed.
Identify amenities on the plan including, but not limited to, water features, sports
courts, tot lots, ramadas, benches, barbecues, trails and paths.
Provide wall and gate elevations. Identify the location of subdivision signage and
include signage elevation details with dimensions.
Identify width and surface material for trails and paths.
Provide details of site lighting to show compliance with dark sky principals.
Lighting shall be fully shielded and light shall not trespass onto adjacent parcels.
Landscaping/Amenity Plan NOTES Section indicate the following:
1. No structure, landscaping, fence, wall, or terrace or other obstruction to
view in excess of two feet in height as measured from the centerline of
the street shall be placed within the required 25-foot sight visibility
triangles.
2. Landscaping in County Right-of-way shall conform the MCDOT Roadway
Design Manual.
3. All transformers, back-flow prevention devices, utility boxes and all other
utility related ground mounted equipment shall be painted to
complement the development and shall be screened with landscape
material where possible. All HVAC units shall be ground-mounted or
screened with a continuous parapet for commercial projects.
4. All outdoor lighting shall conform to Section 1112 of the Maricopa County
Zoning Ordinance.
5. All trees shall be double-staked.
4. DRAINAGE REPORT/PLAN:
_____ 2 copies
_____ 1 CD/DVD Electronic version of Drainage Report
5. TRAFFIC IMPACT STUDY (Check with Maricopa County Department of Transportation to determine if
applicable):
_____ 2 copies
Other information that will be helpful in evaluating the request:
- Architectural renderings and themes (illustrations and descriptions)
- Landscaping renderings and themes (illustrations and descriptions)
- Sign details, elevations and descriptions
- Screening wall/fence details, elevations, and descriptions
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301
Preliminary Plat Checklist Internet: www.maricopa.gov/planning 10/30/19
Planning & Development Department
PRELIMINARY PLAT APPLICATION
SUBMITTAL CHECKLIST
7. REQUESTS FOR TIME EXTENSIONS FOR PRELIMINARY PLATS: Application materials listed in Item 1 include
two (2) copies of the previously approved Preliminary Plat and Narrative Report must be submitted to
the Maricopa County Planning & Development Department along with the applicable fees.
MARICOPA COUNTY AGENCY CONTACTS
Planning and Development (Planning, Plan Review, Engineering): 602-506-3301
Environmental Services: 602-506-0371
Flood Control District: 602-506-1501
6. FEES
___ A.
Planning Review Fee:
Preliminary Plat $100 per lot, tract, or parcel ($1000 min., $30,000 max.)
Preliminary Plat Time Extension $500
Modification of Condition/s $250 per condition ($500 min., $1500 max.)
Waiver of Standard $500 per standard ($500 min., $5000 max.)
See Maricopa County Subdivision Regulations, Chapter 4 – (www.maricopa.gov/planning
)
No application shall be scheduled for hearing by any board or commission or administratively
approved unless and until all fees and fines owed to the Department as a result of any activity
or inactivity attributable to the property that is the subject of the application are brought current
and paid in full or any amounts owed pursuant to an agreement of compliance are current, as
the case may be. This requirement shall not be waived by the Board of Supervisors or Planning
and Zoning Commission.
___ B.
Maricopa County Department of Transportation (MCDOT) Review Fee - $100. (This is a separate
fee but can be combined with the planning fee.) A MCDOT fee is not charged for a Preliminary
Plat Time Extension.
___ C.
Maricopa County Environmental Services Department (MCESD) Review Fee of $225. (This is a
separate fee, but can be combined with the planning fee.) A MCESD fee is not charged for a
Preliminary Plat Time Extension.
___ D.
Drainage Review Fee:
$2,000 + $200 per acre
Maximum of $34,000
(This is a separate fee but can be combined with the planning fee). A Drainage Review fee is
not charged for a Preliminary Plat Time Extension.
___ E.
Addressing Review Fee - $10 per lot
An Addressing Review fee is not charged for a Preliminary Plat Time Extension.
501 North 44
th
St., Suite 200 Phoenix AZ 85008 (602) 506-3301
2019 Filing Deadlines and Hearing Dates Internet: www.maricopa.gov/planning 10/26/2018
MARICOPA COUNTY
PLANNING & DEVELOPMENT DEPARTMENT
2019 FILING DEADLINES AND HEARING DATES
*The December 13, 2018 P&Z to be held at 501 N. 44
th
Street in the Gold/Platinum Conference Rooms.
** ZIPPOR to be held at 501 N. 44
th
Street in the Gold/Platinum Conference Rooms.
TECHNICAL ADVISORY COMMITTEE
(TAC)
PLANNING & ZONING COMMISSION (P & Z) BOARD OF SUPERVISORS (BOS)
TAC meetings are scheduled as
needed. Typically, a TAC meeting is
held within 60 days of application;
however TAC slots are limited.
This deadline refers to written sign
off being obtained by all County
agencies. A submittal must be
received at least three (3) weeks prior
to this deadline to allow for
review/sign off.
This deadline refers to the last day
an applicant can provide an
Affidavit of Posting and
Photos to the assigned Planner.
Dates in bold indicate meetings of
the Maricopa County Zoning,
Infrastructure, Policy, Procedure &
Ordinance Review Committee
(ZIPPOR) committee.
These dates typically follow the
preceding P&Z date unless the case is
continued or the P&Z does not take
action.
TAC meetings County Agency sign off deadlines
Affidavit of Posting and Photo
deadlines
P&Z
Hearings/Meetings
Board of Supervisors
Hearings/Meetings
January 15, 2019
October 29, 2018
N/A
November 29, 2018**
January 9, 2019
February 5, 2019
November 13, 2018
November 16, 2018
December 13, 2018 *
January 16, 2019
February 19, 2019
December 17, 2018
December 21, 2018
January 17, 2019
February 13, 2019
March 5, 2019
December 31, 2018
January 4, 2018
January 31, 2019
February 27, 2019
March 19, 2019
January 14, 2019
January 18, 2019
February 14, 2019
March 13, 2019
April 2, 2019
January 28, 2019
N/A
February 28, 2019**
March 27, 2019
April 16, 2019
February 11, 2019
February 15, 2019
March 14, 2019
April 10, 2019
May 7, 2019
February 25, 2019
March 1, 2019
March 28, 2019
April 24, 2019
May 21, 2019
March 11, 2019
March 15, 2019
April 11, 2019
May 8, 2019
June 4, 2019
March 25, 2019
March 29, 2019
April 25, 2019
May 22, 2019
June 18, 2019
April 15, 2019
April 19, 2019
May 16, 2019
June 12, 2019
July 2, 2019
April 29, 2019
N/A
May 30, 2019**
June 26, 2019
July 16, 2019
May 13, 2019
May 17, 2019
June 13, 2019
July 31, 2019
August 6, 2019
June 24, 2019
June 28, 2019
July 25, 2019
August 21, 2019
August 20, 2019
July 8, 2019
July 12, 2019
August 8, 2019
September 4, 2019
September 3, 2019
July 22, 2019
N/A
August 22, 2019**
September 18, 2019
September 17, 2019
August 12, 2019
August 16, 2019
September 12, 2019
October 9, 2019
October 1, 2019
August 26, 2019
August 30, 2019
September 26, 2019
October 23, 2019
October 15, 2019
September 9, 2018
September 13, 2019
October 10, 2019
November 6, 2019
November 5, 2019
September 23, 2019
September 27, 2019
October 24, 2019
November 20, 2019
November 19, 2019
October 7, 2019
October 11, 2019
November 7, 2019
December 11, 2019
December 3, 2019
October 21, 2019
N/A
November 21, 2019**
TBD
December 17, 2019
November 12, 2019
November 15, 2019
December 12, 2019
TBD
One Stop Shop - Planning Application Submittal
What to Expect at the One Stop Shop
Preliminary PlatWhat to Expect at One Stop Shop 10/30/19
Purpose: Provide customers with information about what to expect when submitting a preliminary plat application. This
information sheet includes the application material checklist, fee schedule, and a three step process for application
submittal.
Location: Maricopa County Planning & Development Department
501 N. 44
th
Street, Suite 200 Phoenix, AZ 85008
Business Hours: 8:00 a.m. 5:00 p.m. Monday through Friday, except holidays (to ensure adequate time for application submittal,
projects should be submitted no later than 4:00 p.m.)
STEP 1 - Reception
: Proceed to the One Stop Shop Reception desk to obtain a call ticket for the application submittal. Provide the
receptionist your name and specify the type of planning application.
STEP 2 - Intake Counter:
One Stop Shop customer service will call your ticket number and evaluate the application materials for
completeness. Once the application materials are accepted a tracking number will be provided and staff will advise you to proceed to the cashier
to process application payment. The following is a list of required application materials: (Please note, if any documentation is missing your
application may not be accepted during the intake process, please be sure to follow this checklist).
STEP 3 - Cashier - Processing Payment
: The cashier will call your ticket number, request your application tracking number, advise you of the
total application fees and request your method of payment. Maricopa County accepts cash, check, or credit card. Please make checks payable to:
MARICOPA COUNTY. We currently accept Visa and MasterCard for credit card payment. In July 2013, the County will also accept Discover and
American Express. Please note that proper payment in full, based upon the following fee schedule, is required at the time of
application:
Preliminary Plat Submittal Documents
2 copies Completed and signed Preliminary Plat Application
1 copy Recorded deed or unofficial copy
1 CD or jump drive with electronic version of application materials
2 copies Preliminary Plat 24” x 36” collated, folded and stapled
1 copyPreliminary Plat reduction 8 ½” x 11”
2 copies Narrative Report
2 copies Drainage Report & 1 CD/DVD electronic version of Drainage Report
2 copies - Traffic Impact Study
(if applicable)
Preliminary Plat Time Extension Submittal Documents
2 copies Approved Preliminary Plat
2 copies - Approved Narrative Report
1 copy Preliminary Plat application
1 copy Recorded deed or unofficial copy
Preliminary Plat Application Fee Schedule
Reviewing Agency Preliminary Plat
Preliminary
Plat Time
Extension
Preliminary Plat
Modification of
Condition/s
Planning
$100 per lot, tract or parcel ($1,000 min., $30,000 max.)
Waiver of Standard $500 per standard ($500 min., $5,000
max.)
$500
$250 per condition ($500
min., $1,500 max.)
MCDOT
$100
-
$100
MCESD
$225
-
$225
Drainage Review
$2,000 + $200 per acre ($34,000 max.)
-
$60 per condition
Addressing
$10 per lot
-
$10 per lot
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301 (602) 506-3601 fax
706 Planning and Development 06/19
A drainage plan and report needs to accompany a preliminary plat submittal. The drainage plan/report shall be
developed in accordance with Chapter 6 of the Maricopa County Drainage Policies and Standards Manual, be
signed and sealed by an Arizona Registered Professional Civil Engineer, and address the following at a minimum:
1. Offsite Hydrology Need to determine the quantity, the entrance and exit points, and how the flow is to be
routed through or around the site.
2. Onsite Hydrology Need to show how the flows are to be routed to retention basins.
3. Onsite Retention Need to retain water for the 100-year, 2-hour storm for the site, including adjacent right
of way plus one (1) foot of freeboard. Determine volume needed and the size and location of basins. Provide
a note that basins must drain within 36 hours.
4. Cross Sections Provide typical sections for edge conditions indicating tie-in to existing surrounding grades
and interior design features such as retaining walls and drainage channels.
5. Finished Pad Elevations and Certification Provide finished pad elevations in areas of the project site
with unique drainage features (adjacent to basins, channels and/or in areas of significant grading) to
demonstrate that the pads will be safe from inundation during the 100-year peak runoff event.
6. Topography Need to show natural and proposed contour elevations and/or spot elevations. All contour lines
must be annotated,
7. Preliminary Construction Details Sufficient detail shall be provided to verify that any proposed drainage
control structures can be constructed within identified easements or tracts.
8. Floodplains Need to show the regulatory floodplain boundaries if the site is within a Federal Emergency
Management Agency’s (FEMA) special flood hazard area. Delineate all floodplains (non-FEMA) of 50 cfs or
greater. All Floodplain delineations must be shown on the preliminary plat.
9. Erosion Setbacks For washes and other watercourse channels flowing at 50 cfs or greater an erosion
setback will need to be determined, which meets Arizona State Standard 5-96.
10. Drainage Easements All drainage control structures, including retention, shall be in platted tracts or
easements.
Since complex drainage systems may require more detailed information, a meeting should be arranged with
personnel from Drainage Review.
FEE INFORMATION*:
FEE: $ 2,000 + $200/acre maximum $34,000
* See the Drainage Regulation for current fee schedule
Planning & Development
Department
DRAINAGE REVIEW REQUIREMENTS FOR
PRELIMINARY PLAT
501 North 44
th
St, Suite 200 Phoenix AZ 85008 (602) 506-3301 (602) 506-3711 fax
Transportation Requirements - 830 Internet: www.maricopa.gov/planning 10/29/2012
Subdivision Name: File No.:
Engineer: Date Received:
1.
Proposed name; location by section, township, and range; small-scale vicinity map; referenced
by dimension and bearing to section corners and/or quarter section corners; and subdivision
boundary clearly identified.
2.
Name, address, and phone of landowner and subdivider.
3.
Name, address, phone, and registration number of engineer or surveyor.
4.
North point, scale, date of preparation and date of revisions.
5.
Name, book, and page number of adjacent subdivisions and names of owners of adjoining
parcels of land that is not subdivided.
6.
Existing and proposed contours; location and elevation of benchmark; 2 feet contours up to 5%
grade; 5 feet, 5% to 10%; 10 feet, over 10%.
7.
Location by survey of streams, washes, etc. and drainage study.
8.
Adequate easement along stream or drainage course.
9.
Location width and name of all existing platted streets adjacent to or within tract, existing
buildings, rights-of-way, section lines, corporation lines, and school district boundaries.
10.
Existing sewers, water mains, culverts or underground structures within and adjacent to tract
with pipe sizes, grades, and locations, if sewer or water mains are not immediately adjacent,
direction and distance to nearest usable utility must be given.
11.
Location, width and names of proposed streets, alleys, drainage ways and easements. Include
irrigation easements, if applicable.
12.
Lot layout; minimum building setback line; lot number; and approximate dimensions and areas
of proposed lots; non-access easements on lots adjacent to major streets.
13.
Designation of all land to be dedicated, provided or reserved for public use, with use
indicated.
14.
Reference by note of proposed electric, gas or telephone service and whether or not such
service is underground.
15.
Proposed multi-family, commercial or industrial use areas designated with existing zoning,
present district boundary lines and status of any pending zoning changes.
16.
Statement as to the type of proposed sewage facilities.
17.
Statement as to the type of proposed water supply facilities.
18.
Proposed fire hydrant locations.
19.
Paved access provided.
20.
A statement as to standards and specifications whereby improvements are to be constructed.
21.
Sight triangle at intersection of residential streets; intersection sight distance at roads classified
as collector or arterial.
DEPARTMENT OF TRANSPORTATION
PRELIMINARY PLAT REQUIREMENTS