HomeMy WebLinkAboutRES 82-35RESOLUTION NO.82-35
A RESOLUTION OF THE MAYOR AND CITY COUNCIL OF THE
CITY OF APACHE JUNCTION,ARIZONA,DECLARING AS A
PUBLIC RECORD THAT CERTAIN DOCUMENT FILED WITH THE
CITY CLERK AND ENTITLED APACHE JUNCTION DEVELOPMENT
GUIDE,PROCEDURES FOR DEVELOPERS AND ENGINEERS IN
PREPARING PLANS FOR REVIEW AND APPROVAL,WHICH MAY
BE REFERRED TO AS THE "CITY OF APACHE JUNCTION,ARIZONA,
DEVELOPMENT GUIDE".
BE IT RESOLVED by the Mayor and City Council of the City of Apache
Junction,Arizona,that;
1.The certain document entitled APACHE JUNCTION DEVELOPMENT GUIDE,
PROCEDURES FOR DEVELOPERS AND ENGINEERS IN PREPARING PLANS FOR
REVIEW AND APPROVAL,which may be referred to as the "City of
Apache Junction,Arizona,Development Guide",three (3)copies
of which are on file i n the office of the City Clerk of the City
of Apache Junction,Arizona,i s hereby declared to be a public
record,and said copies are ordered to remain on file with said
City Clerk.
2.The certain document entitled APACHE JUNCTION DEVELOPMENT GUIDE,
PROCEDURES FOR DEVELOPERS AND ENGINEERS IN PREPARING PLANS FOR
REVIEW AND APPROVAL,which may be referred to as the "City of
Apache Junction,Arizona,Development Guide",contains forty
(40)pages,numbered:Title page,Table of Contents,1 through
29,Exhibits A through G,Exhibits H-1 and H-2,and Exhibit I .
PASSED AND ADOPTED BY THE MAYOR AND CITY COUNCIL OF THE CITY OF APACHE
JUNCTION,ARIZONA,THIS 15TH day of JUNE ,1982.
ATTEST:
K hleen Connelly,City Cl
APPROVED AS TO FORM:
City Attorney
Mayor Wendell J.Clarke
APACHE JUNCTION
DEVELOPMENT GUIDE
PROCEDURES FOR DEVELOPERS AND ENGINEERS
IN PREPARING PLANS FOR
REVIEW AND APPROVAL
CITY OF APACHE JUNCTION
1001 NORTH IDAHO ROAD
Telephone 982-8002
Date
TABLE OF CONTENTS
Tentative Development Schedule Page ......1
General Information ...... 2
Improvement Plans
A.Cover Sheets ...... 4
B.Plan and Profile ...... 7
Check List:
A.Streets ...... 8
B.Sewer .....10
C.Water .....12
D.Storm Drainage
I.Preliminary Subdivision Review .....14
II.Final Subdivision Review .....14
III.Commercial Site Drainage .....16
Storm Drainage Policy
I.Residential Subdivisions .....17
a.Retention Basin Guidelines .....17
II.Commercial .....18
III.Hydrology Reports .....18
Flood Plain Management .....22
Landscaping .....24
Improvement Security .....25
Final Inspection and Acceptance of
Improvements .....26
Plans Format/Drafting Procedure
Federal -Aid Projects .....27
EXHIBITS
Runoff & Storm Drain Sizing Charts A thru G
Landscaping Maintenance Agreement H(1) & H(2)
Assurance for Construction of Improvements
Developer:
Date
Consulting Engr:
PRE -FINAL
RECORDED PLAT
WATER PLANS
SEWER PLANS .
PAVING PLANS
MOVE DIRT
PRE -FINAL GRADE
PLACE SEWER
PLACE WATER • .
.11E -STAKE CONTROL.
PLACE POWER
PLACE TELEPHONE —
PLACE GAS
PLACE CURBS
PAVING
START OF HOUSING
DEVELOPMENT
T E N T A T I V E D E V E L O P M E N T S C H E D U L E
Start Complete Actual Actual
Date -Date •Start Complete Remarks
Please provide the name and telephone number of the person responsible for coordinating
this development.
NAME TELEPHONE NUMBER•
1.
- GENERAL INFORMATION -
1.The Developer must comply with all requirements of the City of Apache
Junction Subdivision Ordinance and all other applicable ordinances,
rules or regulations.
2.All designs must be in accordance with the 1979 Uniform Standard Details
and Specifications published by the Maricopa Association of Governments
as amended by the City of Apache Junction.
3.Dedication of street rights -of -way or utility easements must be coordinated
through the Engineering Department.
4.All utility developer designs must be in accordance with City Codes, utility
company standards and the latest State and County Health Department requirements
and approved by all agencies prior to the issuance of the City Permit.
5.The Developer is required to contact private water companies, Mountain Bell,
Arizona Public Service and Salt River Project for locations of existing and
proposed water mains, buried conduit, gas or cable.Locations must be shown
on plans to reduce the possibility of conflict and damage.Conflicts arising
from failure to do this shall be the responsibility of the Developer.
6.Where it is determined that a contractor is working on a project without a
permit or an official set of stamped, approved drawings by the City of Apache
Junction Engineering Department or Building Department, a Stop Work Order will
be issued.
7.The Developer shall provide three (3) completed sets of plans for all reviews.
8.Where the project is in conjunction with a planned development, apartment,
townhouse or commercial property, three (3) sets of plans should be submitted
to the Division of Building Inspection along with the on -site plans.DO NOT
SUBMIT PLANS DIRECTLY TO ENGINEERING if project is a combination on-sire—a-Tdi
off -site project.
9.The Developer should not submit preliminary plans unless previously arranged with
the Utilities and the City Engineer or Zoning Administrator.
10.The Contractor shall notify El Paso Natural Gas District Superintendent in
Phoenix, Arizona (telephone (602) 967-1686) 48 hours prior to commencing
construction in the vicinity of El Paso Natural Gas right-of-way in order
that El Paso may have a representative present at all times.
11.Final plat and improvement plans shall be submitted for only that area
intended to be constructed.Phasing the final plat and improvement plans
will not be allowed.
12.A description for "unplatted" easements, rights -of -way, or parcels upon
which improvements are being constructed shall be prepared by a registered
Engineer or land surveyor licensed in the State of Arizona, signed by the
owner and submitted on a form provided by the City to the City Engineer for
review and processing.
2.
- GENERAL INFORMATION - (cont'd)
13.The Developer shall review all comments made by City departments and make
appropriate corrections where required.
14.Street lights are required on all public streets within and adjacent to
the proposed project.The Developer shall initiate a request to the
Engineering Department to create a street light improvement district. (Refer 22)
15.The Developer is to provide assurance, in a form acceptable to the city,
from his financial lender, guaranteeing the off -site improvements.The
Developers engineer is to provide construction cost estimates to sub-
stantiate the amount, which must be approved by the City Engineer.
16.The improvement plans must include a general master utility layout for
the subdivision as one (1) of the front sheets in the total set of plans.
17.The Developer is to provide a copy of the project soil investigation for
city review.Any areas of expansive soil will require special treatment
during project construction.The Developers engineer shall note these areas
and special requirements on the plans.
18.The Developers engineer shall prepare plans in conjunction with horizontal
and vertical datum as provided by the City of Apache Junction.
19.Benchmarks and temporary benchmarks shall be indicated on each sheet of the
improvement plans.
20.Horizontal coordinates shall be indicated on the final plat at all sub-
division boundaries and indicating lot areas, street areas and tract areas
shall be provided in square feet and acres.A subtotal and total of all
streets, lots and tracts are to be included.
21.The Contractor shall notify the Blue Stake Center in Phoenix, Arizona,
telephone number 602-263-1100 at least two (2) but not more than five (5)
working days prior to excavation work.
22.Developer shall coordinate with electric utility, in preliminary plan stage,
to plan for underground circuits for future street lights on all streets
including arterial streets, underground sprinklers for right-of-way lands-
caping, future traffic signals, etc.Installation of conduit street cross-
ings for buried electric, telephone, cable TV, etc., should be considered
at this time.
3.
- IMPROVEMENT PLANS -
Front or Cover Sheets
(24 inches by 36 inches)
1.Small "location" map.
2.Small scale subdivision and sheet index map.
3.List of quantities.
4.Engineer's seal and stamp or approval on each sheet.
5.Location provided for signature of approval for the State and/or
County Health Departments.
6.List typical street and alley cross -sections for each situation.
Draw typical section for each case not covered by the above standard
details and specify fog seal, asphalt mix and base required.
7.List all "City" benchmarks used on this project.(Contact Engineer-
ing Department for location and elevation.)Take crossties to
Salt River Valley Water Users Association, State, USCGS, G.L.O. and
County benchmarks if they are within or adjacent to the project.
8.If details are shown, indicate to which sheet they refer.
9.The following general notes shall be included:
A.All work and materials shall conform to the latest Editions of the
Maricopa Association of Governments (MAG) Uniform Standard
Specifications and Uniform Standard Details for Public Works
Construction.
B.Exact point of matching termination and overlay, if necessary,
shall be confirmed in the field by the City Engineer.
C.All frames, covers, valve boxes and manholes shall be adjusted
to finish grade.
D.Construction shall begin when underground utility conflicts
have been resolved.
E.It shall be the responsibility of the contractor to arrange for the
relocation and relocation costs of all utilities, by providing utilities
advance notice of the project at preliminary plan stage, with suffi-
cient time for utilities review, and submitting a utility relocation
schedule.
F.All work and materials which do not conform to the approved plans
and specifications are subject to removal and replacement at the
contractor's expense.
4.
- IMPROVEMENT PLANS -
G.The City Engineer may direct the placement of excess material
taken from streets during pregrading.
H.It shall be the contractor's responsibility to locate and
protect all utilities or structures.
I.At least 2, but not more than 5 working days prior to excavating
in the vicinity of any utility, the contractor shall contact the
utility's locating service for field assistance. (Blue Stake -263-1100)
J.Dust shall be controlled by watering per air pollution control
district of Pinal County.Contractor shall obtain necessary
permits.
K.All construction water and power shall be obtained and handled
by the contractor at his own expense.The contractor shall
make his own arrangements to procure and transport water to
the construction site.All temporary facilities shall be
removed prior to final acceptance by the City.
L.Approval is for one year time only.If construction work is
not started within one year, the plans shall be brought up to
current standards and resubmitted for City approval.
M.The City Engineer shall be notified 24 hours prior to any
construction work.
N.Acceptance of the completed right-of-way improvements will not
be given until:
a.)Reproducible "as -built" plans have been submitted by a
Registered Professional Engineer and approved by the City
Engineer.When the City Engineer provides inspection,
the owner's Registered Engineer shall seal the plans and
shall certify that staking was performed under his super-
vision and that the "as -built" elevations and dimensions
shown on the plans are correct.
b.)The owners Registered Engineer shall have certified in
writing as to the location and accuracy of all survey
monuments.
c.)All test reports meeting M.A.G. specifications for
compaction and materials are submitted and approved by
the City Engineer.
0.The contractor shall comply with the provisions for traffic
controls and barricading as per City of Mesa Traffic Barricade
Manual.
Q.
- IMPROVEMENT PLANS -
P.Driveway locations shall be confirmed or approved by the City prior
to or during curb construction.The contractor and developer shall
be responsible for coordinating the locations for driveways to avoid
conflict with utility services.The utility should be advised of
any subsequent changes.
All gutter grades less than 0.32% must be staked at 15'intervals
along the gutter alignment and checked by the City Inspector
immediately preceding the pouring of concrete.
R.The contractor shall obtain any and all permits required unless
otherwise noted.
S.Deviations from the approved plan must be approved in writing
by the City Engineer prior to scheduling construction.
- IMPROVEMENT PLANS -
PLAN (24 inches by 36 inches)
1.The scale shall not exceed one (1) inch equals 40 feet
(horizontal).
2.Plans must show sizes, types and locations for all existing
and new utilities, including services, paving curb, sidewalk,
fire hydrants, valves, manholes, and all miscellaneous items
of construction; such as street sign posts, driveways, etc..
3.Submit 3 copies of all drawings for review.One set will
be returned with red -lined comments.
4.Where gas is to be installed, separate lines for gas main
and service must be shown and labeled on each drawing.
5.Clearly differentiate between new and old improvements, le.;
(existing 6 -inch ACP vs. new 6 -inch ACP.Also, shade pavement,
etc.).
6.When street grades exceed two percent (0.02 ft./ft.) separate
profiles or plan and profile will be required.Vertical
scale shall not exceed one (1) inch equals four (4) feet.
7.Final approval and signature will be given only after all
other reviewing agencies (County, Health Dept., Water Com-
pany, etc.) have signed the originals.Submit originals
and paper reproducible copies for City signature.The
reproducible copies will be retained by the City.
8.Reproducible "as -built" plans shall be minimum .003" thick
Mylar photocopies or Mylar sepias, able to reproduce legible
blueline copies.(See page 27.)
- IMPROVEMENT PLAN -
Streets
1.Standard width: Section line street: 64' full width; Mid-
line streets: 50'full width; Collector streets; 42' full
width; Residential streets;32'full width.All widths to
back of curb.
2.Minimum gutter grade in the City of Apache Junction is 0.0032.Special
approval by the City Engineer is required for grades less than 0.0032.
3.Clearly mark grade changes and grade breaks.
4.Show all horizontal and vertical curve information on the plan.
5.Valley gutters shall have a minimum (0.25) drop across intersections.
6.Curb returns shall have a minimum (0.1) drop.
7."Grade to daylight" or provide catch basins at the end of new paving
projects where necessary.Also provide barricades or delineators where
there are traffic hazards immediately following end of project paving.
8.City requires pavement cross -slopes in streets at 0.020'/feet of pave-
ment width.(Example:A half street, 14 feet wide (pavement) requires
0.28' crown from centerline of street to lip of gutter.)
9.Six inch (6") thick sidewalk is required for alley and commercial drive-
way entrances.All other sidewalks are to be four inches (4") thick.
10.Minimum curb return radii:(Back of curb) residential twenty feet (20'),
•Collector twenty-five feet (25'), Mid -section line thirty feet (30'),
Section line thirty-five feet (35').
11.Survey monuments are required at all centerline control points (Brass-
caps in concrete).Section corners and quarter corners require brass-
caps to be set in concrete and in handholes.
12.Show sufficient pavement tapers at beginning and end of projects to
properly channel traffic back to original or new alignment.Tapers
shall be of temporary construction consisting of at least two inch (2")
asphalt course over six inch (6") Mat.(Tapers shall be installed at
20:1 and are to be sawcut and removed when pavement is extended.)
13.Show and label the installation of street sign posts at each
intersection.(Locations normally coincide with the corner
where a STOP sign would be located.)
14. Perform a complete field survey and show all existing topo-
graphy and what is to be done with it.(Power poles, trees,
ditches, and etc.)•
15. Any curb with less than the 0.32% gutter grade must have a note
on the cover sheet, requiring staking along the actual gutter
alignment (not offset) and must be checked by the City Inspector
immediately preceding the pouring of concrete.
- IMPROVEMENT PLANS
Streets (Cont'd)
16.Plans must show installation of a four -inch (4") ABC in alleys
or paved (2"A/C over 4" ABC) if to be used as access for resi-
dential access or 2" A/C over 6" ABC if used as commercial
access to accommodate truck traffic.
17.Provide sufficient sight clearance where necessary, such as
removal of existing obstructions at or near an intersection.
18.All driveway widths and locations shall be indicated on plan
where vertical curb is to be installed.
19.If your project calls for widening an existing pavement to
include a new curb and gutter; be sure elevation shots are
provided along the monument line,the sawcut line of the
existing new pavement match -point and the gutterline of the
proposed curb.
20.Provide ramps for handicapped at all curb returns.
21.Vertical curb (6" face) is required on section and mid -section
line streets.Vertical curb shall also be provided on collect-
or and residential streets if required to meet hydrologic requ-
irements.Roll curb and gutter may be used on residential
streets, providing no vertical curb patterns have been install-
ed in adjacent developed areas on that street alignment.
22.Sidewalks shall be 5'wide on section line streets and 4'
wide on all other streets.Meandering sidewalks may be appr-
oved on a case -by -case basis, and shall be reviewed by utilities
companies to determine conflicts.
9.
SEWER
(When Appropriate)
NOTE:
The City does not have a sewerage distribution system or treat-
ment plant at this time.However, if a system is designed to meet
the criteria below the City may accept systems, in public streets,
for future maintenance, if and when a municipal system is constr-
ucted.
1.All sewer designs and construction must conform to the Arizona
Department of Health Services Engineering Bulletin 11 (latest
edition), unless more stringent controls are required by this
guide.
2.Show both on plan and profile the concrete encasement of sewer
lines where necessary.
3.Each lot or parcel must be provided with its own individual
sewer/septic service unless otherwise approved.The location
should be coordinated so as to avoid placement in conflict
with proposed driveway locations, possible future pool
locations, and utilities.
4.A note must be on plans for "Contractor to verify elevation of
existing sewer stub before proceeding with balance of sewer
trenching".
5.The future need for sewer in the surrounding area with regards
to your present design slopes and depth must be considered.
6.In the profile, show the relationship between sewer mains and
water mains at each crossing.
7.Both the slope and the end elevation must be shown on all
sewer main stubs.
8.Developer's engineer is to furnish cut sheets on all sewer main
stubs.
9.Sewer mains shall be low enough to avoid conflicts with all
other utilities (water services, telephone company, electric,
gas, storm drains,etc.) and must have a minimum four (4) feet
of cover to finished grade.
10.Prior to submitting subdivision improvement plans, a prelim-
inary master plan of the sewer with sizes, slopes, manhole flow
lines and natural grades should be submitted for review on the
preliminary plat for subdivision review.Also provide details
and specification of sewerage treatment and/or septic facilities.
11.Final improvement plans will detail sewerage treatment facilities
and indicate provisions for security, operation and maintenance
by the owner.(Not required for individual septic tank install-
ations).
10.
SEWER (Cont'd)
12.Minimum cover over crown of lateral sewer to be minimum of
four feet (4') at the property line.
13.Manhole diameter to be four feet (4'), providing sewer is a
lateral line.
14.If the manhole is on a trunk line, main, or branch line,
and more than ten feet (10') deep, or the line is over
twelve inches (12")in diameter, the manhole is to be five
feet (5') in diameter.
15.When a line is extended, but not to the design location for
a manhole, a temporary cleanout is acceptable.
Line Size
4" (taps)
6 "
8"
10"
12"
15"
MINIMUM SLOPES
Min. Design Slopes
. 0050
. 0050
. 0033
.0024
. 0019
. 0014
NOTE: Other slopes as approved by
the City Engineer.
CURVED SEWERS
Minimum radius 500 feet.
Maximum distance between manholes
400 feet, and at each end of the curve.
LATERALS
a) May have maximum drop of 24 -inches (24")
without use of drop connection.
b)Insure 0.10 drop in manholes of 90°bends.
c) Use single wyes only.No double wyes.
11.
WATER
NOTE:The City does not own or operate water distribution systems
at this time.However, the following items are jointly required
by the City and private utility companies for approval.
1.All water lines to be ACP.
2.All water line design and construction to conform to the Arizona
Department of Health Services Engineering Bulletin 10 (latest
edition), unless more stringent controls are required by this
guide.
3.Valves at intersections shall be placed opposite the PC of curb
returns in such a manner that not more than one hydrant shall
be shut -down at any one time.
4.A note is required on the plans:"The Contractor shall be re-
quired to install a night tie-in for any new water line that
will affect existing service in the opinion of the water
company."
5.Show water line in a separate trench from other utilities.
6.Review future water extension problems with respect to proposed
lines and valves to prevent loss of service to customers.
7.Fire hydrants are to be placed as indicated by the Fire Chief
on a review plan submitted to him by the developer.
8.Normal placement of water mains shall be three feet (3')behind
sidewalks on the east or north side of streets.In the case
of special half -street situations or unusual conditions,
locations shall be confirmed by the Fire Chief, City Engineer,
and utility prior to the preparation of plans (unless other-
wise specified by the appropriate water company).
9.Valves on dead end lines shall be placed to cause the least
amount of inconvenience to existing services when the line
is extended.If the valve is to be placed near the end of
the stub, there should be at least two (2) full joints of
pipe between the valve and the plug.
10.If a fire hydrant is on a dead end line it will require that
the line be at least a six inch (6") line up to the hydrant.
If more than one hydrant is required on a dead-end line,the
line shall be a minimum of eight inches (8") in diameter.
11.Water line sizes shall be determined by the appropriate
water company on a review plan submitted to the company
by the developer.
12.
- IMPROVEMENT PLANS -
Water (cont'd)
12.Valves on dead end lines shall be placed to cause the least
amount of inconvenience to existing services when the line is
extended.If the valve is to be placed near the end of the stub,
there should be at least two (2) full joints of pipe between the
valve and the plug for lines twelve -inches (12") and larger.
One (1) full joint should be installed between valve and plug for
lines smaller than twelve -inches (12").
13.If a fire hydrant is on a dead end line it will require that the
line be at least an six-inch (6") line up to the hydrant.If the
line is to be extended at least an eight -inch (8") line is re-
quired.
14.Thrust blocking shall be provided as per M.A.G. Details and
Specifications.
13.
- IMPROVEMENT PLANS -
Storm Drainage
I.Preliminary Subdivision Review
1.Submit preliminary drainage report.
2.Show limits of on -site drainage areas and off -site watersheds.
3.Show existing drainage structures such as waste or delivery
ditches, channels, etc.
4.What will be done with existing drainage structures?
5.Submit a plat showing drainage pattern of all streets in the
subdivision.
6.What is the required retention?ac. ft.
7.What is the retention provided?ac. ft.
8.What is the approximate size and depth of the required basin?
.(Maximum depth allowed is three and one
half feet (3.5) - Maximum side slope 4:1).
9.What method is available for draining the basin in 36 hours?
gravity flow into rate
pumped into rate
drywells, number approx. depth
10.How will basin be maintained?
private homeowner
homeowners association
other
11.Is it clear what will be done with the storm run-off?
12. Are any special easements needed for pipes, ditches, temporary
basins, etc.?
II.Final Subdivision Drainage Review *
1.Has a final drainage report been included with the submittal of
final plans?
2.Is a plat showing peak street flows and drainage areas included?
3.Are storm drain sizing calculations included?
*NOTE:See Storm Drainage Policy for further information.
14.
- IMPROVEMENT PLANS -
Storm Drainage (cont'd)
II.(Final Subdivision Drainage Review cont'd.)
4.Are catch basin calculations included?
5.Is a detail drawing of retention basin grading shown?
6.What is the required volume?ac.ft.
7.What is the calculated volume?ac.ft.
8.Are inlet and outlet structures shown?
9.Is lot grading plan included?
10.Method of draining basin in 36 hours?
gravity flow into rate
pumped into rate
drywell, number depth
11.How is basin being maintained?
12.On -lot retention for single family lots will not be allowed
unless conditions warrant special consideration as determined
by the City Engineer.On -site retention must be accompanied
by storm drainage covenants, prepared by the Developer's
engineer for all lots or areas that are to retain drainage.
This covenant is to be signed by the Developer or Owner and
recorded with the subdivision plat.
13.The engineering drawings must designate the type of storm
drain pipe to be used including size and slope.Use the
following as a guide for choosing pipe required in different
situations.
A.Reinforced pipe (RCP 36 inches inside diameter or larger
and RGRCP any diameter) may be used in all situations.
The engineering drawings shall designate the Class of
D -load specifications as per ASTM -C-76 and when requested
the engineer shall verify his choice of pipe with load
computations.
B.Non -reinforced pipe (RGCP)- may be used in easements
outside the limits of paving, sidewalks, or alleys.
The engineering drawings shall designate the class of pipe
as per ASTM-C-14 and the engineer is required to provide
load calculations to justify the use of this pipe.
15.
-IMPROVEMENT PLANS -
Storm Drainage (cont'd)
III.Commercial Site Drainage and all other Development not previously
mentioned.
1.Have all property lines, proposed or existing buildings,
asphalt, grass, desert landscape and concrete areas been
shown and the dimensions of same?
2.Are all existing grades shown, either by a grid method or
contour lines especially at property lines, driveways and
sidewalks?
3.Has the finished grade of all surfaces been indicated?
4.Is the finished floor elevation shown?
5.Is the direction of roof drainage shown?
6.Are all items of construction that will affect drainage
shown?
7.Is the lot divided into drainage areas and calculations
shown for runoff and retention of each area?
8.Were the correct runoff coefficients used?
9.What method of draining the retention area is provided?
16.
STORM DRAINAGE POLICY
I.RESIDENTIAL SUBDIVISIONS
A.All water which falls within the subdivision from a ten-year
(10) storm of 24 hour duration, (approximately 2.4 inches),
must be retained within the boundaries of that subdivision.
The method of retention is left up to the developer and requires
the approval of the City Engineer.Two (2) or more developers
may join together to provide a larger retention facility to
accomodate the runoff for more than one (1) subdivision if all
other criteria are met.
B.Streets must be constructed to carry the runoff from a ten-year
(10) storm between the curbs.In cases where the peak flows
from the design storm exceed the street capacity, underground
pipes of sufficient size to carry the excess must be installed.
Storm drains when designed as independent structures shall accomo-
date a 10 -year (10) storm.
-See attached Capacity Chart (Exhibit A).
C.The peak flows from a 100 -year (100) storm must be carried within
the cross section between finished grade at buildings.(Front
yards and street)
D.I.Retention basins are permitted to a maximum of three and
one half feet (3.5) in depth and must be constructed so that
rainwater will stand no longer than 36 hours from the end of
.the storm.Except in special circumstances, they must be
drained by pumping or controlled gravity flow.
2.PROPOSED WATER RETENTION BASINS IN SALT RIVER PROJECT
TRANSMISSION LINE RIGHTS -OF -WAY:
a.Retention basins are to be rectangular in design with a
maximum slope of 2:1 on all four sides.
b.The top of the slope must be a minimum of fifty feet (50)
from the legs of a tower or the edge of a pole.A minimum
12 foot wide access road must be provideed continuously between
towers or poles.
c.The dirt slope adjacent to the tower or pole must be protected
either with sod, gunite, gabion, rip -rap, or plastic sheets with
rock covering, as approved by Salt River Project.
d.If a water flow is required between any two retention basins,
it must be constructed of pipe.An open lateral ditch is not
acceptable.
e.Trees will be limited to those with a mature height of fifteen
(15)feet.
f.Developer shall submit drawings to the City and Salt River Project
for approval.The Salt River Project will consider both existing
and planned future power facilities in their review.When approved
by Salt River Project, a letter shall be forwarded to the City.
STORM DRAINAGE POLICY (Cont'd)
E.Where practical, it is recommended that retention areas be made
a part of a privately owned lot and covered by a drainage easement.
If the basin retains water from a subdivision which has a co-oper-
ative type homeowners association, the maintenance of this basin
must be done by the association.If the basin is to be constructed
on a parcel of land which will not be sold and the maintenance
responsibilities of which are not specifically defined, it will be
necessary for the developer to install complete improvements on the
parcel and to make necessary provisions for its continuous mainten-
ance.
F.Existing major water courses shall be maintained and dedicated as
drainage ways and shall not be altered from their natural locations
at the perimeter of the project.Street crossings for these water
courses shall be sized for a 10 -year flood event.Refer to Bureau
of Public Roads Hydraulic Engineering Circular #5, September, 1961.
II.COMMERCIAL, INDUSTRIAL, RESIDENTIAL (EXCEPT INDIVIDUAL SINGLE FAMILY
RESIDENCES).
A.All storm water from a 10 -year storm of twenty-four (24) hour
duration (approximately 2.4 inches) must be retained on -site.
(Includes street areas.)
B.There must be some method of draining all retention areas within
36 hours.Percolation by surface spreading in a landscape area is
an acceptable method, if the 10 -year storm creates no more than
twelve inches (12") ponding on the landscape area.Dry wells are
not desirable, but may be acceptable providing percolation tests
are submitted and approval of the City Engineer is obtained.
III.HYDROLOGY REPORTS
A.Commercial and all other development not previously mentioned.
1.Submit a site plan which shows the following:
a.All proposed buildings, asphalt, grass, concrete or
desert landscape and dimensions of same.
b.Existing and finished grades of all surfaces (especially
finished floor elevations) and at property lines and
back of sidewalks.
2.Compute the amount of runoff to be retained by dividing the
site into individual drainage areas and applying the follow-
ing formula to each area.Submit all calculations for review.
18.
STORM DRAINAGE POLICY (Cont'd.)
Volume of
Runoff
(cu. ft.)=Area in SQ. FT. x 0.20 x C
Where C =.95 concrete
•=.85 building roof or asphalt
•=.70 desert landscaping
•=.25 bare ground
•=.15 grass landscaping
3.Provide retention for volume of water as found in 2 above.
It is recommended that parking areas be graded to drain
toward a landscaped area.When this is done, a light rain will
drain away with little or no ponding on the paved surface.A
storm of greater intensity will back up on the pavement, but
the water should recede before it can damage the parking lot
surface.
4.Provide some method of draining the retention volume by sur-
facing spreading in a landscape area or a controlled connection
to a wash or storm drain.Drywells are permitted when approved
by the City Engineer, if no other solution can be found.
B.Residential Subdivisions
1.Preliminary Reports
a.A preliminary drainage report must be presented with the
application for preliminary subdivision review.No engin-
eering review will be scheduled without this report.This
report shall be on separate, letter -size sheets with any
necessary maps.Handwritten comments on a plan sheet are
not acceptable.
b.Delineate the boundaries of the drainage area or watershed.
If the subdivision is subject to off -site drainage, include
the applicable off -site areas.
c.Indicate any existing drainage or irrigation structures
such as: waste or delivery ditches, natural drainage
channels, etc., and what will be done with them.
d.Indicate on a plat drawing the drainage pattern of all
streets.
e.Indicate the retention volume required and present a
preliminary retention basin plan including size, depth
and method of draining it.
f. Maximum depth of basin shall not exceed three and one
half (3.5) feet.
g•Indicate proposed maintenance and method of draining
the basin in 36 hours.
STORM DRAINAGE POLICY (Cont'd.)
III.HYDROLOGY REPORTS (Cont'd)
•2.Final Reports
a.A final hydrology report must be submitted with the
initial submittal with the engineering plans.Report
shall be on letter -size sheets with necessary maps neatly
folded, all in a binder.
b.Justify the runoff factor ("C" factor) used in the comput-
ations by taking a typical lot cross-section and computing
a weighted runoff factor using the following coefficients:
Concrete Pavement ....95%
Asphaltic Pavement....85%
Building Roofs 857
Desert Landscape ... 70%
Bare Ground .......25%
Grass Landscape .....15%
c.A map is to accompany the report which delineates clearly
the different areas to be considered and labels by number
the different critical points or where inlets are to be
located.
d.Each sub -area is to be analyzed for the peak flow generated
by a ten (10) year storm on the chart labeled "Peak Flow
from Sub -Areas".
Use the velocities for time of concentration and intensity
charts found in this guide.Use the rational method, as
presented in the Arizona Highway Department Manual:
"Hydrologic Design for Highway Drainage".
e.Place inlets wherever the flow exceeds the street capacity
according to the charts in this guide.The inlets are to
be analyzed separately and catch basin computations shall
be submitted.
f.Size the storm drains and submit design computations if
applicable.
g•If storm runoff flows onto the property to be subdivided
from adjacent properties, this must be included in detail,
in the report.Drainage area, calculated peak flows, and
other pertinent runoff data must be presented.If the
flow is in a defined channel, the channel must be improved.
An eight (8) foot bottom to accommodate maintenance vehicles
is required.Special consideration of the use of open
channels is to be given on each individual project, by
the City Engineer.The runoff from areas outside the
subdivision may be carried through the new subdivision.
20.
STORM DRAINAGE POLICY '(Cont'd)
III.HYDROLOGY REPORTS (Cont ed.)
B.2.Final reports (cont'd)
h.Compute the amount of retention volume required using
the following formula:
Drainage Area (acres) x C x .20 = retention volume AC -FT.
i.Clarify responsibility and maintenance of the basin.
j •Clarify the method of draining the basin in 36 hours.
Except in special circumstances as approved by the
City Engineer, they shall be drained by pumping or con-
trolled gravity flow.
C.Use design charts and forms as provided herein.
21.
VII
Flood Plain Management
The City of Apache Junction having entered into the Flood Insurance
Program by resolution 79-41 adopted on November 7, 1979, is required to
provide adequate flood plain management and control measures, with effective
enforcement, consistant with criteria set forth by the Federal Emergency
Management Agency and section 1910 of the National Flood Insurance Program
Regulations.
This action allows the community to acquire federally subsidized flood
insurance, provides for local flood plain management, allows for a unified
national program for managing flood losses and provides for safer living
conditions.
A copy of the Federal register dated October 26, 1976, reprinted by the
Department of Housing and Urban Development - Federal Insurance Administration
National Flood Insurance Program, is on file with the City Planning Director,
Zoning Administrator and City Engineer.
The following excerpts are taken from the referenced Federal Register:
1.Flood Insurance shall not be sold or renewed unless the community
has adopted and uniformly enforces adequate minimum flood plain
management regulations.
2.Requires building sites will be reasonably safe from flooding and
constructed to prevent flotation, collapse or lateral movement,
with materials resistant to flood damage and by methods to minimize
flood damage.Specific requirements are provided for mobile homes
and trailers.
3.Requires public utilities (includes septic systems) and facilities to
be constructed to minimize flood damage and prevent infiltration
of flood waters and systems contamination.
4.Requires confirmation that alteration or relocation of a watercourse
(wash) does not adversley effect upstream and down stream properties.
5.Requires assurances that the flood carrying capacity within altered
or relocated portions of watercourses (washes) are maintained.
6.Requires evacuation plan and alternate vehicular access and escape
routes be provided in Arizona.
7.Requires a Registered professional engineer or architect shall certify
that flood proofing methods are adequate to withstand the flood depths,
pressures, velocities, impact, up -lift forces and other factors
associated with the base flood elevation.
8.Requires compliance by new construction or expansion by existing
developments or when repair, reconstruction or improvement equals
or exceeds fifty (50%) percent of the value of the existing
development.
9.Requires all encroachments, including fill, new construction be
prohibited so as not to increase the base flood elevation more than
one foot at any point.
22.
Flood Plain Management (cont'd)
10.Requires the placement of new mobile home placement be prohibited
within regulatory floodways.
11.Variances:
a.Granting a variances is generally limited to lot sizes of less
than one half OD acre.
b.Variances shall not be issued within a designated floodway if
any increase in flood levels would result.
c.Variances shall only be issued with a showing of good and suffi-
cient cause and exceptional hardship, providing the variance will
not result in increased flood heights, threats to public safety,
public expense, nuisances or conflicts.
d.Variances will result in increased premium rates for flood insur-
ance as high as $25 for $100 of insurance coverage.
12.Suspension of the community flood insurance program will result for
failure to adopt or enforce flood plain management regulations.
In order to comply with Federal requirements Developers and
engineers shall provide the City Engineer with the following infor-
mation:
1.Confirm what flood zone the development is located within.
2.Confirm the base flood (Q100)elevation.
3.Confirm the lowest floor (including basement) is elevated or
flood proofed to or above the base flood level (additional
six (6) inch freeboard flood elevation is recommended).
4.Confirm watercourses enter and leave areas to be developed in
their natural locations, and that flows or highwater elevations
are not increased to the detriment of upstream and downstream
properties.
5.Insure that hydrologic data is presented in accordance with the
storm drainage policy in this guide.
23.
VIII
LANDSCAPING
All plans for landscaping within the City rights -of -way
shall be submitted to the City Engineer for review and
approval.
The Developer shall enter into a maintenance agreement
on the form provided by the City.(See Exhibit "H")
Landscaping themes already initiated within a quarter
mile of the proposed development, should be continued,
except as required by the City Engineer.
24.
IX
IMPROVEMENT SECURITY
Prior to the construction of street improvements the subdivider/
owner/developer shall provide security by either:
(1)posting a performance bond issued by a
qualified surety;
(2)establishing a cash trust, said funds
to be deposited with the City to the
credit of the subdivider;
(3)depositing with the City a certificate
of deposit issued by a banking institu-
tion authorized to issue same; or
(4)filing with the City an executed letter
of assurance or contract of guarantee
between the City and a trust company,
banking insitution, or other financial
institution approved by City, and author-
ized to enter into such contracts;
(5)the amount of said security is to be based
upon the cost estimate prepared by a
registered professional civil engineer or
licensed contractor in an amount to cover
the completed installation of the improve-
ments, and requires approval by the City
Engineer;
(6)a completed date for the improvements shall
be declared by the subdivider and the security
shall provide for its forfeiture to the City
In the event that said improvements were
started and have not been completed or not
accepted by the City.
See Exhibit "I".
25.
Final Inspection and Acceptance of Improvements
Upon due notice from the developer of presumptive completion of all
improvements as called for on the approved improvement plans, the
City will make an inspection.If all construction is found to be
completed to his satisfaction, then that inspection shall constitute
the final inspection and the City Engineer will recommend final ac-
ceptance of the public improvements (including street, sewer and
drainage improvements) to the City Council upon receipt of the follow-
ing items:
1.As -built plans drawn in India ink, or a reproducible linen, mylar
or sepia copy thereof, showing all street, drainage and sewer
improvements constructed, and copies of the final plans showing
all electrical, lighting, gas, telephone, cable television and
water improvements constructed within the public rights -of -way
or public easements for inclusion in the City's permanent files.
Final plans shall show the approved design conditions and re-
flect any field changes approved by the City Engineer, and the
developer's engineer shall certify that the final plans represent
as nearly as possible the actual field conditions as constructed.
2.Affidavit regarding settlement of claims:The developer shall
certify that all bills for labor and materials incorporated in
the work have been paid and agree to indemnify and save harmless
the City against any and all liens, claims of liens, suits,
actions, damages, charges and expenses whatsoever, which the
City may suffer arising out of the failure of the developer to
pay for all labor performed and materials furnished in the con-
struction of the required improvements.
3.Guarantee: The developer and contractor shall guarantee all work
against defective workmanship or materials for a period of one (1)
year from the date of its final acceptance by the Mayor and City
Council.
Upon final acceptance of the public improvements by the City
Council, the City Engineer will notify the developer in writing
of this acceptance as of the date of approval by the Council.
26.
.._ANS FORMAT AND DRAFTING PH EDURE
FOR
FEDERAL -AID URBAN SYSTEM STREETS PROJECTS
Consultants retained by the City, preparing plans for federal -aid
projects shall comply to the latest requirements of the Arizona
Department of Transportation.
Arizona Department of Transportation Standards as received by
the City on February 4, 1981 are as follows:
The consultant should confirm these requirements are up to date
prior to starting any City project.
GENERAL.Detail Plans are prepared to provide the prospective bidder
with all details and information necessary to a concise conception of
the work to be done; they also provide a gauge for determining that all
intents of the improvement have been fulfilled.Workmanship, neatness,
accuracy, and attention to detail are coordinated toward ease of
reading and singleness of interpretation.
PLAN SET FORMAT.All sheets are 22" x 36" overall; reproducible
paper, linen, or plastic.Sequence of sheets is as follows:
(1)Face Sheet(s)
(2)Design Sheet(s)
(3)List of Standards Sheets
(4)Plan Summary Sheet(s)
(5)Special Detail Sheet(s)
(6)Structure Summary Sheets
(7)Plan and/or Profile Sheet(s)
(8)Earthwork Sheet(s)
(9)Traffic Sheet(s)
(10)Roadside Development Sheet(s)
(11)Structures Section Sheet(s)
(12)Materials Division Sheet(s)
(Provided by ADOT)
(Provided by ADOT)
(If Required)
(If Necessary)
(If Required)
(If Required)
(If Required)
(Provided by ADOT)
FACE SHEET.Standard sheets are provided by highway designation, each
sheet being usable for one or more projects.A location map is centered
on the sheet with provision in the lower right corner for FHWA and
Departmental approval signatures.Use of the standard Face Sheet(s)
requires the addition of the county or counties involved, the project
number, and the location shown and exaggerated in red on the map portion
of all preliminary copies as well as the finished reduced -size copy(s).
The Face Sheet is illustrated by Standard P-1.10.1 (Provided by ADOT.)
DESIGN SHEET.This sheet(s) shows length of project, index of sheets,
general notes, present and design ADT, design speed, and a fully-
dimensioned typical roadway cross-section(s) and pavement structure
1 "Drafting Standards For Use In Office and Field"1979, ADOT
27.
composition.If required, tables are used to show location of changes
in select material thickness, or other pavement structure composition
thicknesses, additions or deletions, cut ditch dimensions and cut and
embankment slopes.Space and number of Plan Summary Sheet items per-
mitting, this sheet may also include Plan Summary Sheet information.
See Standards P-2.20, P-2.30, P-4.10.
LIST OF STANDARD SHEETS.These sheets are unruled and list all appli-
cable roadway Standard Drawings - Construction Details by number,
name, and latest revision date.See example, Standard P-3.10.(Pro-
vided by ADOT; listed as 2A on Index.)
PLAN SUMMARY SHEET.This sheet(s) lists summarized quantities, dimen-
sional specifications, and earthwork for all pipe culvert, storm sewer,
and drainage -related items except box culverts and bridges, which are
subject to Structures Section Standards and listed on the Structure
Summary Sheet, and ditch, channel, and dyke earthwork which is listed
on the profiles and included in the Earthwork Sheet.See Standards P-4.20,
P-4.30, P-4.40, and P-4.50.
SPECIAL DETAIL SHEET.This sheet(s) provides construction drawings of
all miscellaneous, non-standard items not subject, wholly or in part,
to Standard Drawings - Construction Details or Standard Drawings -
Structures.See Standard P-5.10, for example.
STRUCTURE SUMMARY SHEETS.These sheets summarize information on
Structures Section items as follows:(Sheets available from ADOT.)
(1)Separate summaries of reinforced concrete box culverts and spans
over 20', showing Station, Description, Special Details Sheet Number,
applicable Structures Section Standards, and material, excavation, and
backfill quantities.
(2)A summary of Bridge and Miscellaneous Structures showing Stationing,
Description, Special Details Sheet Number and applicable Structures
Dection Standards.Quantities for this category are shown on the
appropriate Special Detail Sheet.
(3)General Notes and Joint Notes.
Standards P-6.10, P-6.20, and P-6.30 illustrate sample Structure
Summary Sheets.
PLAN AND/OR PROFILE SHEET.This sheet(s) is prepared on tracing material
having a ruled grid bottom half for the profile portiOn or two separate
sheets, one plain for the plan and one ruled for the profile view.The
scale to be used is such that existing detail and proposed work can be
presented accurately and legibly.Wehn ink is not used, the rapidograph
pen size is a general guide for the appropriate pencil width needed for
all lettering or line work.Dimensional and lettering standards for
titles, identification data, etc. are shown on the sample plan and/or
profile sheets, Standards P-7.10, P-7.20, P-7.30, P-7.40, P-7.50 and
P-7.60.Lettering on drawings should be single stroke gothic style,
28.
or as shown in ADOT'S "Drafting Standards For Use In Office And Field",
1979.Line widths and symbols are illustrated by Standard Drawings
P-0.20 and P-0.30.Nonstandard symbols and abbreviations must be promin-
ently displayed and explained in a legend.Both superelevation and
superelevation transition are assumed to be standard; if they are other
than standard, their values shall be indicated by means of a diagram and
by notation on the plan.
(1)THE PLAN PORTION.This part of the Plan or Plan and Profile Sheet
is generally drawn to a 1"=100' scale for rural roadways.Plans
for interchange, urban, and other areas of considerable detail are
drawn to scales of 1"=50' or 1"=20' as required for ease of reading
and interpretation.For the 1"=100' scale, all main roadway sheets
except, possibly, the first and last sheets, carry thirty stations
with the beginning and ending stations being divisible by thirty.
Similarly, 1"-50' carries fifteen stations and 1"-20', six stations.
(2)THE PROFILE PORTION.This part of the Profile or Plan and Profile
Sheet is drawn to the same horizontal scale as the plan portion.
Generally, the ratio of horizontal scale to vertical scale is 10:1.
EARTHWORK SHEET.This sheet(s) is fully -ruled and shows graphically the
excavation, embankment, hauls, overhauls, borrow, borrow pit locations,
balance points, and shrinkage factors concerned with the total earthwork
for the project; it also shows the stationing and quantities, included
in the overall earthwork project, of excavation and embankment for
ditches, dykes, and channels.See illustration, Standard P-8.10.
TRAFFIC SHEET.This sheet(s) provides all detail concerned with signing,
lighting, traffic control, and delineation.
ROADSIDE DEVELOPMENT SHEET.This sheet(s) provides all detail concerned
with landscaping, landscaping irrigation, rest areas, and other roadside
beautification and driver -convenience facilities.
STRUCTURES SECTION SHEET.This sheet(s) provides all non-standard detail
for the structures summarized by the Structure Summary Sheet.
MATERIALS SERVICES SHEETS.These sheets are prepared by Materials
Services and comprise:
(1)Sketch maps of borrow and aggregate sources.
(2)Test results for borrow and aggregate sources.
(3)Subgrade information and soil profile.
These data are provided only as information for the prospective bidder
and are not a part of the contract papers.
29.
.V
.
II
E
U
H
X
3
ON
V
S
r
l
O
H
1
N3
d
13
3
A
NI
3d
O
l
S
(4
:\:..17 :": .•:::!" 1 :,
j t t
—4-- —4-• t, ••-•MIL
1 '
:
1 Il c?....N[
gill.-_!jt ..1 ...; .i_l_ii I
,...f4!li;.-::. T--,:.1
: I t
I
--+----_11 ---- • •-•• •••-.1.-.1•,•: : ::V -•- .;.".•17:1-7_77'-• •s'77=-1-_-:-__.---_•_=.17.:-:•-:..:*•.::1.:-.::.-.:.• ::A.--:,,.." - -• --::•":...
, ,.: • it:::L':.:::::....LT •._ :::: :::: API' : : --_:•::••::....:••i.f
1
......"1-:..,..__...
: : :. : ....1 •1 _. -.- :::.•i-/::.- 1
_12:-t--:_::-....4:.:.::::::::Tr_ii :.4;i ;':':-i ':,.:+-:..;,::':::•7,1
7 .z s c_.
N cji .11 01 CD a
DISCHARGE IN CUBIC FEET PER SECOND
CA A tr.en —o o (-5 6 o kid .4,01 a,=1.)th000000
A e,0 2 20
00
0
-o
N
r710
"r1
0
2
cd
0
Subdivision Name:
Designed By:
Date:
, .....
STORM SEWER DESIGN CHART
(10 Year Frequency)
-•••••••••••
Q =Total flow in the street and pipe.
Q =Portion of Q that bypasses the storm sewer inlets at thisst
location and flows in the street.This must not exceed this
Q p =Protion of Q that enters the storm sewer.
.ocation Drainage Area Time o f Flow Min.'I
in./hr.Q Qst 1cfs
Street
Capacity
i
Sewer Design Hydraulic Grade Line
.ire No.From _To — No.Increm.
Point Point CA
Inlet 'Sewer Design
CA
Qp Pipe Dia.Vel.
Slope In.fps
Length S f '
ft./ft.
hi_Elevation
ft.Inlet Outlet _
I I
i
,
.—
I 1
I 1 i ,
1-
1..
1
.111
1 ii
-
I
I
.
1
1
-_
I
1--I _
i
1 _
I
_
i ..
CATCH BASIN CAPACITY CHART
=incremental flow i n the street
Qb =flow bypassing the catch basin being analyzed or an upstream catch basin
Qin =Q entering a catch basin
=Depth of ponded water over a catch basin i n a sump or the depth of water
at the gutter,i f the catch basin i s on grade.
Slope =longitudial slope for catch basin on grade
Point No.=Points of location for catch basins,to be the same as used i n the com-
putation of the peak flow from subareas.
Point
No.Qb Slope 11—Qin Qb Street
Capacity
j Type of
C.B.Used
Number
Used
*CATCH BASIN CAPACITY CHART
A.Catch Basins in a sump condition:
For catch basins in a sump condition, ie., with water approaching
from both sides of the catch basin, the following formula should
be used:
Q = 3 pd 1.5 •
Where -p = perimeter of the catch basin for NAG 534 (Single),
p = 4.44';for NAG 534 (Double), p = 7.06'
d = the ponded depth over the grate of the
catch basin
A few values for this formula are tabulated below.
Type of
Catch Basin .3 .4 .5 .6 .67
MAC 534 (Single)
MAC 534 (Double)
2.2
3.5
3.4
5.4
4.7
7.5
6.2 7.3
9.8 11.6
B.Catch Basin on grade:
The following values are to be used for catch basins on grade.The
method used is found in the Arizona Department of Transportation manual
from the hydrology seminar of December, 1968.
Depth of Water
In the Curb
d = .5'
d = .4'
d = .33
Longitudinal Q Intercepted Q Intercepted
Slope of Street by MAC 534 (Sgl)by MAC 534 (Dbl)
.0010 3.3 5.5
.0020 3.9 6.5
.0030 4.5 7.6
.0040 4.9 8.1
. 0050 5.2 8.6
.0010 2.4 4.0
.0020 2.9 4.8
. 0030 3.4 5.7
. 0040 3.7 6.1
.0050 3.9 6.4
.0010 .9 1.5
.0020 1.1 1.8
. 0030 1.3 2.2
.0040 1.5 2.6
. 0050 1.6 2.7
*These charts apply only to MAC 534 (Single) and MAC 534 (Double).
Other catch basins may be used; calculations are to be submitted
and approved by the City Engineer.
EXHIBIT "D"
PEAK FLOW FROM SUB AREAS
Subdivision
Tc i Tc i Tc i Tc i Tc i Tc i Tc i
10 4.4 25 2.8 33 2.35 41 2.0 49 1.77 57 1.60 65 1.4
12 4.1 26 2.75 34 2.3 142 .2.0 50 1.75 58 1.56 70 1.35
14 3.8 27 2.7 35 2.25 43 1.95 51 1.72 59 1.55 75 1.25
16 3.6 28 2.65 36 2.2 44 1.9 52 1.7 60 1.50 80 1.20
18 3.4 29 2.6 37 2.2 45 1.87 53 1.69 61 1.50 85 1.15
20 3.2 30 2.55 38 2.15 46 1.85 54 1.68 62 1.50 90 1.10
22 3.0 31 2.5 39 2.1 47 1.83 55 1.65 63 1.45 100 1.00
24 2.9 32 2.4 40 2.05 48 1.8 56 1.63 64 1.45 120 .85
NOTES:"i" is the intensity for a 10 -year storm.
15 minutes maximum may be used for runoff from lots.
Point
No.
Area
Acres
CA Length of
Area
Average
Velocity
Tc
Min cfs
4 .
EXHIBIT "E"
.1
.
1
g
I
H
)
C
H
rxi
w(r?Cfl
a?
rt.La
r to=••
o •C)
P 4
CD
•h-,•
GO r t
•G
frel
(t)0
rt I I
•r?
CD 0"
ID CD CD
r?
(n
G rt
cn 1 1-i•
(1)r t
m '•
CIO rt
•0 En
II D r t
•173 P-
Ui l .
O Ds 5
0 Cu
r t
rt
‘.4 0
0
11 cr)
0 0•5<
•H-
Ca.0 •
1-A•
C Cr,
F"
ra.re
rI)
Ci)
re
0
I CD
0
cn
I Co
tl
r t
•
s
aa
.
.
1
.
1
s
DEPTH OF FLOW AT GUTTER LINE (FEET)
.
f t •M
-Mt-4i
_Fit f!W!1
CS
Y
0
)
C
)
=
MO
l
d
LITIF-i
Ritti-41 it fit !:!.;•
"bLI:I ill tC:: : ; ; ;I ::: f: ]'..;:::IIii•i:p
- A.•.,.. i r:ji •,!!!!. • •iv,)!!::
i
1 !
•I
lfeirk;_
,,
4-7
i
t rtT i -
61 rt.
8
GUTTER VELOCITY (f.p.s.)
DEPTH OF FLEW AT GUTTER LINE (FELT)
•;
GUTTER VE.LOCITT (F•P.S.)
7 -7 -7
I
'z
3.0
2.0:J
:411.1 . 5
Ka
i
n
i
a
l
l
I
n
t
e
n
i
;
i
L
y
i
n
1 . 0
. 8
. 6
. 4
. 3
. 2
t
.:...• . •
::: , ..71,4
r"
-7 :4
' . :
L:-
:i
. 1 .1
44:
Lt
-
I
f_.:: -- • :
T---•-r--.‘*4SW/...-.- - '•
.' • .----.- ' • t
-_-,--..-
4>.1---..-I .
i.--NN.,4„:,:r
u
MIN
I NMINIM ..._ .
,--- -.-- -t --f 1 .-
__• t -
=m -T -..7_=-_-_-___=--•-• 1..:-.- .:.-..•.47.Th
i. -:--t--_-f7i _I -E-_-
SE -134•1 11EMIKVIMMIth.'14111156... _-r _ 1 .t.:r :t--7_
_.- :: :-..•-i._
7 .
__
_ _ .. _. •-• ----v L.
!_7: : - I '....--::;:"
..- _
1
[- I --f---..--- .._-...
•
---t--•1-11I1I --1-,.....;-.........-.-.-i.-1 - L - -...—.
5 min.10 20 30 40 60 100
1.h r .2
Ourac i n
200 300
3 f.",
5:?0 1000
2 .
Rainfall Intensity -Duration -Frequency Relationship for Apache Junction,AZ
EXHIBIT "G"
AGREEMENT FOR MAINTENANCE OF LANDSCAPING
WITHIN CITY RIGHTS -OF -WAY
THIS AGREEMENT made this day of ,19
by and between the City of Apache Junction hereinafter called
"City" AND owner of property
located at hereinafter called
the "OWNER".City Right -of -Way is defined as that portion of
a divided Roadway that separates the traveled roadway for
traffic flowing in opposite directions and any other portion
of the Right -of -Way lying outside of the traveled roadway,
hereinafter called "RIGHT-OF-WAY".
In consideration of the mutual promises and convenants
herein contained the parties agree as follows:
(1)City will allow the owner to landscape the
Right -of -Way (Give specific description and
location) in the following manner:(Set out
exact type of landscape).
(2)Owner will maintain the said landscaped
Right -of -Way by (Set out type of work to be
done) and perform all other necessary mainte-
nance.
(3)The City Engineer shall determime whether the
Right -of -Way is being maintained in a proper
and satisfactory manner.If it is determined
by the City that the Right -of -Way is being
unsatisfactorily maintained,the City shall
notify the owner by regular mail at his last
known address of this fact.Owner will have
fifteen (15) days from date of mailing in which
to make provisions for the satisfactory com-
pliance with this agreement.
EXHIBIT "H-1"
(4)If the owner fails to perform the provisions
of this agreement or if the assignees, conveyees,
transferees,trustees, grantees, lessees,legatees,
or devisees of the owner fail to perform the
provisions of this agreement,the City shall per-
form the required work and assess the cost against
the property.A lien shall be recorded against
the property for the amount of the assessment.
At the time the lien is recorded,the City shall
have the option to continue to maintain the Right-
of -Way in the manner described in this agreement
or to remove the landscaping herein described and
replace it with any other material the City decides
is appropriate.
(6)The lien will be removed and a release will be
recorded when the owner or the succeeding assignees,
conveyees,transferees,trustees, grantees,lessees,
legatees, or devisees of the owner agree to perform
the provisions of this agreement and post an appr-
opriate bond.
(5)
County of
On this the
ATTEST:
City Clerk
STATE OF ARIZONA )
S S .
CITY OF APACHE JUNCTION
By
Director of Public Works
Owner
Owner
day of , 19 , before me,
•, the undersigned officer, personally appeared
and
satisfactorily proven to be the persons whose name are subscribed
to the within instrument and acknowledged that they executed the
same for the purpose therein contained.
IN WITNESS WHEREOF I hereunto set my hand and official seal.
Notary Public
My Commission Expires:
r....trvvyn.rm fltT ,111
1 _TRANCE FOR CONSTRUCTION OF IMPI_VEMENTS
(IN LIEU OF CASH OR BOND)
Assurance for construction of improvements within the designated right-of-way
described as:
For the purpose of providing the Assurance of Construction of Improvements within
the corporate areas of the City of Apache Junction,
herein referred to as Subdivider/Owner/Developer, and
herein referred to as Financial Institution, licensed to do business in Arizona,
represent as follows:
1.Financial Institution is committed to provide an irrevocable line of cre-
dit or sufficient funds to the Subdivider/Owner/Developer, to cover the entire cost
of installing improvements, consisting of, but not limited to:utilities, paving,
curbs, sidewalks, storm drainage, irrigation, including engineering and inspection
costs, and the cost of replacement or repairs of any existing streets or improvements
damaged by the Subdivider/Owner/Developer, in the course of construction.Said
credit or funds are to be in the amount of:
( $),
based upon a cost estimate submitted by the Subdivider/Owner/Developer and approved
by the City Engineer.
2.All disbursements from said funds by Financial Institution to pay for said
improvements shall be made to the Subdivider/Owner/Developer, or to a contractor or
material supplier upon direction of the Subdivider/Owner/Developer, upon presentation
of invoices and lien waivers.
It is agreed that once construction had started, in the event the improvements in the
above -described project are not completed, as evidenced either by a lack of work on
the improvements for a period of sixty (60) days, or improvements as constructed are
not acceptable to the City Engineer and not in compliance with City standards, and
the developer refuses to make satisfactory corrections, then the City of Apache
Junction may, upon certified letter to the said Financial Institution, draw upon the
said line of credit, to the amount necessary to complete the improvements or make
satisfactory corrections.
This line of credit shall remain in force and effect,until:(1) the improvements for
said project have been completed and accepted by the City Engineer, as evidenced by
letter; or (2) said line of credit has been exhausted by withdrawals by the said City.
SUBDIVIDER/OWNER/DEVELOPER FINANCIAL INSTITUTION
BY:BY:
TITLE:TITLE:
Approved by:
DIRECTOR OF PUBLIC WORKS
DATE