M&T Wadi Hanifah Restoration Project Booklet - 2010-03-S

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    Wadi Haniah Restoration Projecta r r i y a d h d e v e l o p m e n t a u t h o r i t y | m o r i y a m a & t e s h i m a | b u r o h a p p o l d | m a r c h 2 0 1 0

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    As recently as March 22nd, 2010, the United Nations Environmental Program released a report to

    coincide with World Water Day highlighting the dire consequences o sick water globally. The

    report states that more people die rom polluted water every year than rom all orms o violence,

    including war

    The UN Report states that an estimated two billion tons o waste water including ertilizer run-o,

    sewage and industrial waste is being discharged daily ueling the spread o disease and damagingecosystems. It is estimated that 3.7% o all deaths globally are attributed to water-related diseases,

    translating into millions o deaths.

    In the context o such stark reality, the Wadi Haniah Restoration Project could not be o greater

    signicance. We are honoured to present the Project in the ollowing pages.

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    2 wadi hanifah restoration project, march 2010

    t v

    t W h lg W g g

    r. t v W h , g, .

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    3arriyadh development authority | moriyama & teshima | b uro happold

    It transorms problems into opportunities, leading to a sustainable and productive setting, a continuous ribbon o naturalized

    parklands that interconnects the city and the Wadi, in which residential development, arming, recreation, cultural activities and

    tourism exist in harmony within an oasis that extends the ull length o the City, and into the surrounding rural areas.

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    Bringing Environments Back From The Dead

    s

    Imagine an urban generated river fowing in the heart o a desert

    nation, the Kingdom o Saudi Arabia, within an ancient basin the

    Wadi Haniah. What would happen i this critical natural heritageresource died?

    As recently as 2001, the river was so polluted rom direct dumping

    o industrial and municipal waste water that animals and sh foat

    dead in its waters. It was so damaged that an entire eco-system

    along its shores and within a 4500 sq km catchment area was close

    to extinction.

    Now imagine that through a completely natural yet ground-

    breaking processes o naturalization and bio-remediation an

    inspired client and a team o planners, landscape architects and

    engineers, over a period o almost 10 years, succeeds in savingWadi Haniah. An eco-system is restored to its natural greatness

    and continues to be the sustainable source o lie or the City that it

    once was.

    The Arriyadh Development Authority as client, working closely with

    Canadian architecture and planning rm Moriyama & Teshima, in

    partnership with UK engineering rm Buro Happold, has achieved

    this very eat: through a visionary Master Plan, Restoration Program

    and ongoing enhancments. Wadi Haniah is living and thriving once

    again today.

    p:

    1 / Map o Riyadh and the Wadi. 2 / Images o

    polluted waters beore the Wadi Haniah Restoration

    and Flooding Project was implemented. 3/ A restored

    Wadi.

    2

    3

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    6 wadi hanifah restoration project, march 2010

    Wadi Haniah is an outstanding example o recapturing urban wastewater and putting it to work transorming the citys relationship

    with its most signicant natural eature, creating opportunities and benets or its people. The Wadi Haniah project is truly a project

    o global signicance: it is a proven, measureable and tested vision and strategy with the capacity to restore degraded water and

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    ecological systems in urban environments. I Wadi Haniah, its natural environment and 4500 sq km catchment area in the heart o

    a desert can be restored and successully greened, imagine the potentials o this comprehensive approach in locations around the

    world where humans and nature exist in confict.

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    The ollowing pages present the Wadi Haniah Master Plan and

    Implemented Restoration Project, endeavoring to summarize a

    decade o complex environmental planning and design combined

    with the undamentals o ground-breaking bio-remediation

    science that have produced, and continue to produce outstanding

    measureable outcomes:

    A river back rom the dead;

    Urban waste water remediated so that it is sae or human

    contact;

    Large quantities o urban waste water are recycled back to the

    people o Riyadh or reuse;

    Developed an entirely unique bio-remediation acility that is

    already perorming beyond expectations and at a capital cost o

    1/3 o a mechanical treatment plant;

    An eco-system naturalized and restored, thereby greening the

    desert with its indigenous fora and auna;

    A city transormed, no longer turning its back to a polluted

    Wadi Haniah;

    Socio-cultural and economic benets;

    People o Riyadh rom all walks o lie gathering together to

    enjoy public parks and open green spaces and parks along the

    Wadi or the rst time in their lives;

    Real estate values along the Wadi soaring by ten-old;

    An emerging collective pride and condence that comes when

    people experience visible and tangible positive change in their

    environment and recognize the commitment o their leaders to

    a sustainable uture; and

    Government and community commitment to responsible

    stewardship o the Wadi, and an array o environmental and

    educational programs that include the community.

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    t s:

    Riyadh (ar-Riyadh: meaning The

    Gardens) is the capital and largest city

    o Saudi Arabia. It is also the capital oRiyadh Province, and belongs to the

    historical regions o Nejd and Al-Yamama.

    It is situated in the center o the Arabian

    Peninsula on a large plateau, and is home

    to 4,854,000 people, and the urban center

    o a region with a population o close to 6

    million people.

    t s a:

    120 km stretch o Wadi Haniah running

    through Riyadh; Catchment area o 4500

    square kilometers.

    m p p:

    2001 to 2004 - Master Plan development,

    Restoration Designs, and design o

    Enhancements.

    c / i p:

    2004 to present.

    W h Qk F:

    120 km in length

    500,000 m3 dumping removed

    10 million m2 cleaned wadi bed

    2.5 million m3 in reproling cut and ll

    40 side Wadis (10 major wadis)

    9 major parks created

    5 lakes created (25.1 hectares total surace

    area)

    7.4 km pedestrian promenades

    46.8 km o recreational trails created

    30 toilet blocks designed and built

    30,000 shade trees planted

    6,000 planted date palms

    50,000 shrubs planted

    2,000 large Acacia transplanted

    Bio-remediation Facility consisting o 134

    bio-remediation cells designed and built

    42.8 km o Wadi roads

    2,000 parking spaces created

    350,000 cubic metres o urban wastewater

    cleaned per day (2010)

    1,200,000 cubic metres o urban wastewater

    cleaned per day expected in 2025

    730 pieces o waynding and interpretive

    signage

    2,500 light standards along walking trails

    and wadi roads

    600 pieces o eature lighting

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    Summary o the Naturalization Strategy:Components and Process

    nz

    One o the rst steps in the naturalization process to bring the

    Wadi back to lie was to clear the entire Wadi river-bed o dumping

    and debris. This was ollowed by extensive re-grading and food-

    proling measures including the relocation and installation o

    utilities and roadways. Once the Wadi bed had been cleared o

    dumping, re-graded and food-prooed and the utilities and roads

    redeveloped, the next task was to begin the naturalization process

    that would lead to re-vegetating Wadi Haniah with the same

    indigenous species o plants that once inhabited it. Following

    the identication o key species indigenous to Wadi Haniah, the

    ADA and its contractors collected cuttings and seeds rom some

    o the least damaged portions o the Wadi and began the process

    o growing thousands o trees, shrubs and grasses in the ADA

    greenhouses, a process we termed greening the desert.

    The new plants were installed in over 150 dierent designs o

    planting cells and constructed by the thousands within the Wadi

    bed along 70 km o its length. The planting cells were designed orthe unique Wadi conditions. They consist o gravel-topped planting

    beds that become local nurseries which seed to propogate the

    greenery across the Wadi bed, thereby naturalizing the continuous

    open spaces. Within three years these planting cells have proven

    very eective and are transorming the bare earth o the Wadi bed

    into greenery or the people to enjoy.

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    nz d pk

    Rather than developing European style parklands, the Master Plan

    recommended that the Wadi Haniah be landscaped as Naturalized

    Desert Parklands that t with and are indigenous to Riyadhs arid

    desert setting and ecology. This has resulted in a new landscape

    o desert greenery and limestone rock works that meld with the

    surroundings to become 70 km o naturalized desert parklands.

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    W pk

    In keeping with the Master Plan vision, principles and

    recommendations, seven major Wadi parks have been completed

    and two more parks are under construction, including a large water

    park. The parks have been developed with visitor amenities and

    ample parking. Since picnicking is a Riyadh amily recreational

    pasttime, all parks have been designed to accommodate hundreds

    o amilies. Three parks have a strong water ocus, utilizing water

    cleaned by the bio-remediation acility. All o the parks are major

    people attractions. The response o the public has been absolutelyoverwhelming in their enthusiasm or the new parks. For the rst

    time in decades the people o Riyadh are enjoying the Wadi and

    relaxing in green settings that bring amilies rom all walks o lie

    together.

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    bw: A googe image rom March 2010 o the constructed bioremediation works.

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    b- F

    Simply put, clean water creates opportunities or wide-scale public use. By improving Wadi

    Haniah water quality, the greater the potential is or regaining the Wadi environment as the

    most signicant open space in Riyadh.

    Bio-remediation is a general term applied to the use o natural biological unctions or the

    remediation o a variety o environmental damages. Its natures way o cleaning water.

    This naturally occurring process can be augmented in wastewater systems through the

    establishment o an ecologically ecient ood web consisting o not only primary producers

    (algae and higher plants) but also consumer organisms (sh,birds, insects, etc).

    This became the preerred methodology o cleaning the water because it enhanced the

    natural processes o the Wadi ecology, and was less costly than mechanical treatment.

    This has uther contributed to environmental quality o the Wadi, which in turn has greatly

    enhanced public perception and public use.

    Within the dry weather fow channels o the Wadi Haniah watershed, naturalized channel

    design provides continual bioremediation o toxicants, harmul bacteria, and excess

    nutrients (contaminants rom urban and rural discharge) in the year-round fow.

    The main Bio-remediation Facility is located north o the main highway interchange

    and incorporates a series o weirs, rifes, pools, aerating pumps, bioremediation cells,

    articial periphyton & benthic substrates, and riparian planting. Together, the elements o

    this design have developed the appropriate aquatic and riparian conditions to assimilate

    contaminants and urther remediate the water through a community o natural organismsthat aggregate to orm a ood web.

    While all principles utilized in the Bio-remediation Facility are proven, the design o the

    system integrates a hybrid o natural ecological principles and is the rst o its kind in the

    world. This project is already successul in providing water treatment while creating a one-

    o-a-kind natural acility and open-space public attraction.

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    t g - :

    1. Reduction o ecal and total Coliorm bacteria to sae levels;

    2. Elimination o bad odours; and

    3. Prevent cumulative negative impacts o nutrient load through the

    Wadi.

    t b- F g W h

    r pj. t w 3 w k :

    Aeration to kill the coloorm bacteria in the water;1.

    Development o a ood chain to bio-accumulate excessive2.

    nutrients derived rom urban sewage and wastewater; and

    De-nitriying (to metabolize nitrogenous compounds) to reduce3.

    odours emanating rom the wastewater.

    b p a. (J - n 2009)

    r r

    0%

    BOD

    TSS

    Phosphorous

    Nitrogen

    Carbon

    Total Coliorm

    Fecal Coliorm

    20% 40% 60% 80% 100% 120%

    The our components o the Bioremediation Facility are designed to

    enhance the natural treatment process are:

    b1. These are the basic units o the Bio-remediation

    Facility which are responsible or the bulk o nutrient

    assimilation. The whole acility consists o 3 biocell groups as

    ollows: Group 2 (20 biocells), Group 3 (34 biocells) and Group

    4 (80 biocells);

    a s2. This provides sucient levels o dissolved

    oxygen (DO) to the system killing coliorm bacteria and

    creating avorable conditions to microbes, sh & other aquatic

    organisms;

    af p b s3. Provide substrates

    or biolm / periphyton which is essential or bio-accumulating

    nutrients through the ood chain; and

    F (t4. ) Serving as the top o the ood chain and

    controlling the growth o lamentous algae.

    Bio-remediation Facility

    Objectives

    The Bio-remediation Facility is designed as

    habitat and natural structures to support the

    biology that will do the work o cleaning the

    water.

    l, c:

    Phosphorous, Nitrogen

    and Oxygen are in

    insucient quantities

    to ully remediate as o

    November 2009.

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    b- F p

    Based upon early testing and analyses only ve (5) months o data sets rom August 2009

    to February, 2010 Nelson Environmental reported conclusive data in several key areas:

    Suspended solid removal rates are high (clear water).

    Ammonia removal rates are high.

    Fecal and total coliorm removal rates are signicant.

    System is unctioning without odours rom the water.

    Aquatic higher lie orms (sh) are thriving in the Bio-remediation Facility.

    Emergance o a new level o preditors - birds.

    In summary, the Bio-remediation Facility is perorming beyond expectations.

    The Bioremediation Sampling Monitoring Program is designed to allow or water sample

    collection at strategic locations. The data collected is used to determine the treatment

    eciency o individual biocells, groups o cells and o the entire acility. There are twenty-

    two (22) water quality parameters being analyzed in each location and grouped under our

    principal categories: General Variables; Organics; Nutrients; and Microbiology.

    The long term purpose in collecting and analyzing data is to compare system perormance

    to the Master Plan design objectives, in addition to developing long term bio-remediation

    operation and maintenance protocols.

    A summary o water quality analyses is presented in the Nelson Environmental

    Bioremediation and Surace Water Monitoring Report dated February, 2010.

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    Flood prooed entire landscape along 70km stretch o Wadi1.

    Haniah through combination o grading and channelization;

    Relocated all piped utilities (excepting heavy sewars) and2.

    removed all overhead utilities (relocated underground);

    Re-designed Wadi road system to reduce road widths,3.

    rationalize road system into single primary route into the Wadi;

    Implemented the channel system designed to biologically4.

    remediate wastewater as it fows along the channels;

    Completed construction o a major Bio-remediation Facility5.

    with 4 water quality experts on site collecting data and

    continually monitoring outcomes. Water quality Test Reports

    show extremely signicant improvement in water quality;

    Designed and built 7 major public landmark parks (with two6.

    additional under construction) along the Wadi;

    Designed and built 30 toilet blocks7.

    Designed and built 46.8 km +/- o walking trails running8.

    throughout entire park system;

    Designed and built 7.4 km o pedestrian promenades9.

    Designed and built street lighting and trail lighting system or10.

    entire Wadi consisting o 2,500 xtures + 600 eature ligths;

    Branded the Wadi and produced 730 pieces o signage /11.

    waynding / interpretive signage (all now installed);

    Grown and planted 30,000 indigenous shade trees, 6,000 date12.

    palms, 50,000 shrubs and groundcovers, and transplanted

    2,000 large native acacia trees;

    Designed and built over 2,000 lay-by and parking spaces along13.

    the length o the Wadi;

    The people o Riyadh have started using the Wadi parks and14.

    open spaces in large numbers as evidenced by the almost

    capacity crowds on weekends;

    Technical and construction issues are systematically being15.

    resolved. The Wadi is becoming visibly green again and, as

    per the Nelson Environmental test results discussed above

    and presented in their Report, the water is being signicantly

    cleaned;

    The Bio-remediation Facility is developing the biology that16.

    will do the work o cleaning the water. There is a tremendous

    dierence in quality between the water fowing into the Bio-

    remediation and that fowing out and into the Wadi. Already

    the Bio-remediation Facility is perorming beyond expectations;

    Maintenance and management o the Wadi is underway and17.

    will continue to enhance the entire length o the Wadi;

    Wadi Haniah is becoming recognized in Saudi Arabia and18.

    around the world as a landmark initiative. Principles and

    techniques developed or the Wadi will have application in

    many places around the world;

    aw / d:

    Waterront Center (USA) Top Honor Award: Wadi Haniah

    Comprehensive Development Master Plan, Riyadh, Saudi

    Arabia, 2003

    Master Plan Presentation to United Nations Commission on

    Sustainable Development, April 2004

    Highly Commended award by the British Expertise

    Association, UK, 2006

    International Awards or Liveable Communities (LivCom)

    Community Sustainability Award Natural Projects Gold,

    2007

    Overall Achievements and

    Outcomes To Date:

    The Wadi Haniah Restoration Project

    is showing remarkable progress. It is

    rapidly taking shape as one o the worlds

    most distinguished park systems and willbecome Riyadhs Great City Park.

    This remarkable progress has been

    made possible through the concerted

    teamwork o the ADA, Moriyama &

    Teshima and Buro Happold, ADA/Site

    Management, outside experts and

    the contractors - all working together.

    Although there is much work ahead to

    complete implementation o the Master

    Plan, the Restoration Projects in the main

    Wadi have been completed. The positive

    socio-cultural and measurable scientic

    outcomes are already evident and very

    impressive. The level o design is very

    high. A summary o outcomes and

    achievements ollows:

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    Part Two:

    Historical Background and Project Chronology

    t h i W h c a

    The Wadi Haniah watershed is the most signicant natural resource

    in the Region. Wadi Haniah, running through the center o Riyadh,

    is located in the heart o the Najd Plateau in the Kingdom o Saudi

    Arabia. The Wadi and its many sub-wadis orm a unique 120

    kilometre long ecological zone that descends rom the Tuwaiq

    Escarpment in the northwest to the open desert southeast o

    Riyadh, a region comprising a 4500 square km catchment basin.

    The citys history and its uture are inextricably linked to the

    existence and sustainability o Wadi Haniah.

    An oasis in the heart o the Arabian peninsula, the water, land and

    resources o the Wadi Haniah watershed have historically provided

    sustenance or communities along its length. For centuries a

    balance prevailed between the Wadi and the people, betweennatural processes and human interventions. Stability existed

    because the inhabitants were completely dependent upon the Wadi

    or their survival and prosperity.

    The First Saudi State strategically located its capital at Addiriyyah

    on the west bank o Wadi Haniah, taking advantage o its water

    and arable lands. Subsequently Riyadh developed east o Wadi

    Haniah as the new capital o the modern Saudi State. Until the

    rapid expansion o Riyadh, in particular up to the early 1970s, the

    city and the Wadi co-existed in harmony. Wadi Haniah was used as

    a sustainable resource or water and ood - a balance prevailed.

    W h u t

    From the early 1970s Riyadh expanded westward towards Wadi

    Haniah, eventually spreading along its west bank. The Wadi was

    exploited to satisy the increasing demand or water and to provide

    mineral resources to meet the massive construction needs arising

    rom the rapid growth o the City. By the 1980s water resources in

    the Wadi could not cope with the demand, and water table levels

    dropped well below sustainable limits. To meet continued demand,

    Riyadh began to receive desalinated water piped rom the Eastern

    Province. This brought with it a new problem: rising groundwater

    contaminated with raw sewage. As the natural drainage system or

    Riyadh, the Wadi was inappropriately used as a drainage channel

    or this urban generated waste water. Oten standing water resulted

    along the wadi bed creating a public health hazard. Thus began the

    negative public perception o Wadi Haniah as Riyadhs sewer and a

    serious health hazard.

    Wadi Haniah urther deteriorated with the onset o widespread

    dumping and quarrying resulting in widespread environmental

    destruction.

    For the next twenty-ve years the City o Riyadh turned its back on

    Wadi Haniah and its deterioration continued.

    a tk b a d a

    r W

    Investigations into the serious consequences o development,

    groundwater levels and dumping in Wadi Haniah began in

    the 1980s. This led the Arriyadh Development Authority to

    carry out technical and environmental studies in parallel with

    the development o a strategy or the Wadi. In addition to the

    groundwater studies and ongoing groundwater monitoring, the

    Arriyadh Development Authority undertook studies on water

    resources and fooding, as well as the historical and archaeological

    assets. These studies were used as the technical basis or theStrategy or Wadi Haniah, which was adopted in 1994.

    t c oj 1994 Strategy for Wadi Hanifah:

    The High Commission or the Development o Arriyadh enorced

    urgent measures to remove the sources o pollution and most o

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    the industrial activities along Wadi Haniah. This included halting

    removal o soil and stopping dumping o waste. Additionally, the

    food plain boundaries were dened and the placement o utilities

    and services was limited. Monitoring o the wadi environment, and

    issuance o guidelines and regulations were also carried out.

    Despite attempts to improve the condition o Wadi Haniah, the

    Wadi continued to deteriorate. The lack o a comprehensive plan

    made it dicult or authorities to improve and restore Wadi Haniahto health and thereby to improve the quality o lie or the people o

    Riyadh.

    By 2001, when the food plain boundaries were dened, it was

    evident that a comprehensive plan was an essential step orward to

    restore the Wadi. The ollowing conditions had reached a critical

    state:

    Environmental degradation, loss o natural unctioning and

    ecosystem productivity o the Wadi through unsustainable use

    o land, water, energy and other resources.

    Lack o special development controls or Wadi Haniah and its

    environs.

    Illegal dumping o solid and liquid wastes.

    Development that had led to encroachments into the food

    fow channel, and to changes o levels o the Wadi bed. These

    conditions negatively aected the Wadis unction as a natural

    drainage system, and its ability to deal with foods.

    Inadequate system o surace fow channels, which receive fow

    resulting rom rising groundwater as well as discharge rom

    the Manouha Sewage Treatment Plant. The measures taken

    to that point had provided an interim response to the problem

    only, and required planning and co-ordination to address abroader range o issues.

    Uncontrolled discharges into the Wadi surace fow channel

    and/or its tributaries or example rom the abattoir, the

    tannery, and unauthorized discharges rom sewage tankers.

    Health issues related to the quality o water in surace fow

    channels because o uncontrolled discharges.

    The general waste o a potentially valuable water recycling

    resource.

    Visual degradation, resulting rom loss o natural environment,

    dumping, quarrying, lack o coordinated inrastructure

    installation, and lack o development controls.

    Uncoordinated use o the Wadi or trunk utilities, such as

    sanitary, potable water, irrigation mains, and use o the Wadi

    or overhead electrical distribution.

    The 1994 Strategy was just the beginning o a long-term program

    or the preservation and proper use o the Wadi basin and its

    environs. The next step required a comprehensive development

    plan or Wadi Haniah that reviewed the existing conditions,

    explored opportunities, and provided a vision, master plan and

    details or the development o priority projects. Based on two

    objectives:

    1. t e; and

    2. Q l.

    An over-riding concern or the plan would be the restoration o

    balance between needs o the Wadi ecosystem, and the needs,

    desires and expectations o the City o Riyadh with environmental

    sustainability the guiding principle.

    t W h c d p c /

    t r

    The Arriyadh Development Authority prepared the terms o

    reerence or the Comprehensive Development Plan ollowing the

    direction o the High Commission and dened the approach andcontent o Part 1, Part 2, and Part 3 o the assignment. Based on

    the Terms o Reerence the Arriyadh Development Authority called

    or proposals and selected the Joint Venture Team o Moriyama

    & Teshima plus Buro Happold which began the Wadi Haniah

    Comprehensive Development Plan on July 28, 2001.

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    The three part assignment consisted o :

    p 1, Introductory Appraisal: including review o existing studies,

    appraisal o existing data, evaluation o environmental, water

    quality and urban issues, development scenarios, together with the

    articulation o a short and long-term vision or the Wadi.

    p 2, Master Plan: including Environmental Plan, Water Resources

    Management Plan, and Land Use Plan, plus a dened program o

    Priority Projects, and 10 year Implementation Program.

    p 3, Staged Implementation Phase: including designs or Priority

    Projects related to water resources, transportation and utilities,

    programs and design options or environmental restoration and

    conservation, plus recreation and open spaces, guidelines and

    principles or urban development, inrastructure and engineering

    coordination, environmental and urban management, and nancing

    principles. The capital construction works to implement the Master

    Plan were divided into two Parts, and 5 construction zones, which

    are described in detail below:

    The1. W h r pj being those construction

    works necessary to restore food perormance and water

    quality and to complete the Wadi Bed restoration; and

    W h d pg2. being those public

    inrastructure and public landscape capital construction works

    which, together with private sector investment projects, will

    build on the platorm provided by the Wadi Haniah Restoration

    Project to complete the implementation o the Wadi Haniah

    Comprehensive Development Plan.

    t W h r pj

    The overall implementation process began by rst meeting

    immediate existing demands along Wadi Haniah beore

    addressing uture needs. This required restoring and protecting

    the environmental values o Wadi Haniah and upgrading its

    unctionality including:

    Cleaning the Wadi bed o dumping;

    Improving the food perormance o the channel by re-proling

    and re-grading; and

    Improving the Wadi road network in relation to the proposed

    water restoration works, to better accommodate local access

    needs, connections to the Riyadh road network and to provide

    better perorming and saer local Wadi roads.

    The cleaning up o the Wadi is o course one o the critical partso the project however just as important are the other measures

    designed to bring the Wadi back to the people o Riyadh.

    W h d pg:

    This component o the Comprehensive Plan builds upon the Wadi

    Haniah Restoration Project, and then continues with strategic

    public and private sector projects to more ully develop the

    environmental, cultural, recreational and water resources o the

    Wadi Haniah by:

    Providing open spaces and parklands along the Wadi and1.

    extending them into surrounding residential areas;

    Developing the magnicent cultural resources o Wadi Haniah,2.

    particularly at Addiriyyah, Hay Al Masani, the Old Dam and Old

    Al Hair;

    Re-establishing the natural landscape in the desert tablelands3.

    and rangelands o the desert catchment area above the Wadi

    bed, including construction o check dams;

    Providing private sector investments to renew the Seyah mixed4.

    use development area;

    Providing private sector investment opportunities or5.

    recreational and leisure acilities;

    Providing private sector investment opportunities or tourism6.

    development;

    Providing private sector investment or innovative agricultural7.

    development;

    Constructing water recycling and treatment acilities, to meet8.

    uture water needs in Riyadh.

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    F e

    All o the work realized to date is only the beginning o a continuing

    cultural and environmental process to sustain lie and give meaning

    to Wadi Haniah or uture generations. There are a number o key

    initiatives that are important to realize its vision as a Living Wadi.These include:

    Enhancement o The Wadi Haniah Directorate to ensure the

    ongoing protection, management and enhancement o the

    Wadi Haniah;

    Establishment o an educational an interpretative/inormation

    centre that will ocus on the environmental and cultural

    stewardship o Wadi Haniah and its ongoing importance to the

    city o Riyadh;

    Restoration and enhancement o the 10 main sub wadis and

    their linkage to Wadi Haniah in a total watershed management

    program;The continuing development o Wadi Haniah as the Great City

    Park o Riyadh.

    Al Hair Lakes Tourist District

    Establishment o Wadi Reserve Zones (Al Hair Lakes, Wadi

    Laban, Al Hessiah)

    Continuing water cleaning, recycling and reuse

    a G p s

    Wadi Haniah Restoration Project is a bold vision being

    implemented in a world city that will enhance Riyadh as a model

    or sustainability in a world where resh water is an increasingly

    scarce and precious commodity. By recycling and reusing 350,000cubic metres per day o cleaned urban waste water rom the

    City, it provides opportunities or the uture as well as tangible

    economic benets today. The Plan uses urban waste water to

    restore, green and re-connect this most signicant environmental

    eature as public space in the capital city o 4.5 million people.

    The greening programs and projects throughout the watershed

    will make a signicant contribution to the quality o lie in Riyadh,

    while the people o Riyadh also gain access to 120 km o new

    open spaces and parklands. The ground-breaking vision, plan

    and implementation technologies have application globally or the

    protection and resurrection o other threatened environments.

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