Natural Terrain The Landslip Warning is broadcast on radio and television to alert the public to the high risk of many landslides as a result of persistent heavy rainfall. Landslip This sign signifies a slope in natural terrain which has been included in the Slopes Affecting Squatters included in the Non-development Clearance (NDCI Programme LPMit Programme works contract, or an area in close proximity to completed This sign serves to warn the affected squatters about potential landslide risk natural terrain mitigation measures. before rehousing. The affected squaner structures have been found to be especially vulnerable to landslide risk during heavy rainfall, and GEO has Warnings are issued by the Hong Kong Observatory in consultation with the Geotechnical Engineering Office (GEO). 0 Need for Evacuation of Squatter Structures during a Landslip Warning Q If you live in a squatter structure and you hove received o notice to evacuate recommended to the Lands Department to include the squatter structures in because of landslide dangers or you believe that your home is endangered the NDC programme. by on unstable slope/retai ning wall or by overhanging boulders, you should leave your squatter immediately and make arrangement to move to a safe shelter. At times of Landslip Warning, temporary o Landslip Warning Signs o shelters w ill be provided by the District O ffices . You may call the Enquiry Hotline of the For slopes and retaining walls which have Home Affairs Department at been identified to be substandard or to 2835 1473 to locate the District Office and pose a londslde risk, appropriate warning temporary shelters neorestto you . signs will be erected. Four types of wa rning signs ore used: Man-made Slope This sign signifies a man-made slope which has been included in the Landslip [ o Evidence of Landslide Danger o j Prevention and Mitigation (LPMit) Programme works contract, or a man-made slope for which a statutory order (i.e. Dangerous Hillside Order) has been There may be s·1gns of landslide danger on a slope/retaining wall or natural terrain issued by the Building Authority, requiring investigation and/or remedial works. ll'j How to Protect your family and yourself 0 when the Landslip Warning is in force Slopes Along Busy Roads with a History of Landslides This standard traffic warning sign 487 is erected along busy roods with o history of landslides. • You should cancel non-essential appointments, stay at home or remain in a safe shelter. • Motorists should avoid driving in hilly areas or on sections of roods w ith standard traffic warning signs 487. Pedestrians should avoid walking or standing close to slopes/retaining walls along these roads. • You should keep away from man-made slopes and natural terrain/slopes w ith landslip warning signs. • When encountering slopes/retai ning walls with signs of landslide danger, you should keep away from these slopes/retaining walls immediately and do not attempt to pass. Report to the police for assistance. • Further guidance on keeping away from slopes and retaining walls duri ng a Landslip Warning or during heavy ra infall are given in a separate leaflet "Keep Away from Slopes". before it collapses. Some typical signs of landslide danger ore listed below: 0 Landslide debris on roads and footpaths. f) New large cracks or ground subsidence in slopes, reta ining walls or along road pavements. t) Objects, such os mud, rocks, fragments of concrete/brick and uprooted vegetation, falling from slopes and retaining walls. 8 Sudden change in colour (from clear to muddy) of water flow ing from slopes or retain ing w alls. 0 Concentrated water flow ing onto slopes and retaining walls. G) Cement or concrete surface of slopes bulging or being dislodged or sig ns of soil erosion underwoy. 0 Breaking of catchwaters o r serious overflow from catchpits or drains. C) f) Floodi ng of water in hilly areas. Sudden increase in seepage over an extensive area of a slope/retaining wa ll. mm mm m+ cfo7j CEDD Homepage : http://www.cedd.gov.hk ~ Geotechnical Engineering Office Civil Engineering and Development Department Hong Kong Slope Safety Website : 1823 Gall Centre : 1823 http://hkss.cedd.gov.hk