EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Dengkil, District of , Darul Ehsan for Tristar Acres Sdn. Bhd.

The Summary of Environmental Impacts and Mitigating Measures All the impacts that are likely to be generated by the proposed Project is summarized in Table F. Mitigating measures specifically proposed for each of the impacts are also presented in a systematic manner in accordance to pre-construction, construction and operational phase. Hence, such data enable convenient identification of impacts along with their respective temporal (i.e., acute or residual) and spatial (i.e., magnitude) considerations.

Table F: Summary of Environmental Impacts and Mitigating Measures for the Proposed Project

PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT A. Pre-Construction Phase Reconnaissance study • Preparation of • The activity is rather None. Short-term. The pre-construction of the Project Site. documentations and localized and not stage basically plans of the proposed expected to generate involves the development. any disturbances to the documentation, legal existing environment. approval from the Detail study of the • Field survey and site • Some form of beneficial relevant authorities, existing condition. investigation by impacts such as job building construction engineering and opportunities (i.e., design and environmental surveying works, development consultants. associated labourers planning, field survey and analytical as well as site laboratories) may be investigation. possible.

f-i EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT B. Construction Phase Construction of the • The provision of proper • Main impact is in terms • Regular sweeping and Short-term within The contractor should access road transportational routes of noise and dust cleaning of access roads the duration of ensure that the is given foremost disturbances. to ensure overall traffic the proposed transportation of consideration in any • Increment of traffic risks safety to other motorist Project. heavy machineries, developmental project. especially by heavy • Flagmen must be equipments and This is to ensure vehicles Jalan Bangi stationed at the access construction material convenience to the (B17) and Jalan - road junctions to control adhere to specific workers as well as Dengkil (B18) users. and direct traffic. guidelines from enabling smooth • Spillage of raw • The vehicles will have to relevant authorities. transportation of construction material observe speed limits and construction materials onto public roads. any damage done to the and heavy machinery. transportation routes Main Access route to • Transportation of should be repaired. Project Site machineries, equipment • Proper warning signs, and construction signals or warning light material to the site is and barricades along Jalan from Jalan Bangi (B17) Bangi (B17) and Jalan and Jalan Kajang- Kajang-Dengkil (B18) are Dengkil (B18) which is recommended to ensure located along the safety and smooth flow of eastern and southern traffic. boundary. • A wash trough will be constructed to avoid Access Route within • Existing earthen routes • As the access route has dirtying the public road. project site within the project site been established within • Establishment of tarred can be used but a new the Project area, the road or at least compacted road network will be magnitude of crusher runs roads and constructed and should disturbance unto the constant wetting of work conform to the layout. physical environment tracks to minimize dust may be considered as dispersion. nominal.

f-ii EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Mobilization on site • Construction of workers • The benefits to the local • Adequate facilities to prevent Short-term within camp. community would be an unhealthy environment. the duration of • The sewage to be source of employment • Providing safety devices which the proposed generated during the and small-scale are recommended in the Project. construction stage is at business investment. Occupational Safety and 67,500 l/day 1 • It is estimated that an Health Act 1994 (OSHA) for (~estimated-300 approximate of 300 construction workers to ensure workers). workers shall be needed their safety. • Provision of to complete the stage. • All foreign workers shall be maintenance yard/ • In terms of adverse screened against the presence workshop. impact, presence of of contagious diseases. foreign labour might • A total of 10 numbers of septic poses antisocial tanks with a capacity of 35 PE behaviour and risk of each are required to contain introduction of the sewage discharge of contagious diseases 300PE at the site to the that needs to be compliance limits. addressed. • No open-burning of rubbish • Organic pollution in should be carried out. terms of sewage waste. • Proper skid tank storage to • Heavy machinery and curtail the possibility of oil and equipment can generate grease contamination. oily waste. • The generated spent oil and • Oil/ grease and grease from the maintenance hydraulic spill onto soil works have to be stored and causing the soil and handled as per the groundwater Environmental Quality contamination. (Scheduled Wastes) Regulations 2005

1 Assumption during construction stage based on per worker with per capita discharge rate of 225l/day. Adapted from MS1228 Sewage Guidelines.

f-iii EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Site Clearing and • Site clearing will involve • The loss of current • Biomass stockpile area Short term Close compliance to Biomass Disposal. the removal of mainly of vegetation and the should be earmarked within the proposals in the oil palm trees, shrubs and related habitats. the Project area prior being ESCP plan, biomass secondary vegetations. • May lead to soil erosion disposed off site to an disposal plan proper • Biomass generation is and increase in surface approved dumpsite. management approximately 30,196.92 runoff. • Open burning is strictly practices on-site will tons for estimated • If not disposed off prohibited , as it would lead help prevent secondary vegetation and properly, can lead to to air pollution problems. excessive water old oil palm trees at the water quality • The undergrowth and small quality deterioration. Project Site. deterioration and attract woody plants could be used unwanted pests and as mulching material at the high organic loading in slopes or flat land. the river • Implementation of best • Open burning of management practice on- biomass or solid waste site (i.e., turfing, temporary shall generate soot and earth drains and sediment dust. basins • Earthwork and • The Contractor should construction activities place heavy emphasis in limited nesting and soil conservation by habitat of faunas within adopting environmentally the Project Site area. integrated measures to counter against soil erosion.

f-iv EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Impact of earthworks. • The cut and fill quantities • The main impact • Site clearing, earthworks Short term are approximated to generated from and construction works of 5,036,275m 3 and earthworks activities is the proposed development • The cut and fill 4,983,370m 3 respectively. probably in the form of will be conducted in seven activity are • 52,905 m 3 of earth and soil washout into the (7) earthworks zone and spread out from rocks which will be spread river especially during twelve (12) sediment basins 77 days for all over in the heavy rain. to minimize the extent of Zone A to 232 development site. • Settlement of the the bare soil exposure and days for Zone • Excavation of higher underlying subsoil by subsequently, soil erosion G. grounds to form the load imposed after problems. • Earthworks are platforms, roads and filling. • Any sediment generated carried out in other area as shown in • If not properly from the site shall be stages design drawings compacted, fill areas is retained in the silt structure according to its • Filling to lower area to susceptible to erosion, before being discharged zone. form embankments and slipping and into Sg. Langat at the • There may be platform to design levels subsidence. northern of the Project Site blasting works • Treatment of soil for • If the cuttings are too and to Sg. at the for the rocks at embankments and steep and are not southern portion of the site at Zone D platforms properly protected, Project site. (nearby Water stability problems may • Turfing or revegetation Tank 1 area), arise should be carried out subjected to • The leveling of ground immediately at all exposed Contractor’s and the use of heavy areas. Measures such as proposed machinery for the hydroseeding, installation of method. Other compaction of the fill turf mats or other suitable areas will only material during land geotextiles are suggested be excavation development and to promote vegetation of hard construction activities growth. materials in will give rise to dust and • The heavy vehicles will Zone B, C and noise pollution. have to observe speed part of Zone D. limits and any damage done to the transportation routes should be repaired.

f-v EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT • Erosion control proposed is by work scheduling, soil preparation / roughening, turf & hydroseeding. • Sediment Control proposed is sediment basins, check dam and street sweeping. • Runoff Management BMPs is Diversion Channel, Earth Bank, Drainage inlet and Outlet Protection and Temporary Waterway Crossing • Tracking control proposed is the use of hoarding, stabilized construction access, Construction Road stabilization, entrance / outlet wash trough, and wetting of ground. • Maintenance of the completed and temporary works

f-vi EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Hydrology • Site clearing and • The clearing of the existing • All together there are twelve Short term The temporary earthwork activities will vegetation will increase in (12) sediment basins drainage system have a significant impact discharge into Sg. Langat proposed for the entire will be designed to on the hydrological at the northern of the development area in order comply with the regime. Project Site and to Sg. to trap all surface runoff. procedures as Semenyih at the southern • The surface drainage needs outlined in the portion of the Project site. to be constructed in order to MASMA manual. reduce the infiltration and erosion caused by surface runoff especially during heavy rainstorms. Soil Erosion • Site clearing and • During the site clearing and • The earthworks and Short term earthworks in the form of earthwork phase under the construction works will be cut and fill activities. This worst case scenario (totally carried out in 7 zones in activity will be only carried exposed and no erosion three (3) separate stages. out at proposed built up mitigation measures • Provision of twelve (12) area. implemented), the soil sediment basins for the erosion rates of Zone A to Site. Zone G Development and • Maintenance of the the entire Project Site are drainage network and estimated to be 227.1 sediment ponds. tons/ha/year, 385 • Biotechnical protection and tons/ha/year, 877.2 mechanical practices to tons/ha/year, 872.2 attend to the exposed soil. tons/ha/year 364.8 • Implementation of ESCP. tons/ha/year, 411.6 tons/ha/year 228.6 tons/ha/year and 466.2 tons/ha/year respectively • Under worst case scenario, the estimated sediment yield is Zone A to Zone G Development are estimated to be 3,879 tons, 23,085

f-vii EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT tons, 25,182 tons, 58,161 tons, 16,819 tons, 18,919 tons, 8,809 tons while the total sediment yield is estimated to be 154,854 tons per year for the entire Project Site which is approximately seven (7) times higher than the existing condition of 23,266 tons/year. Air Pollution • Improper storage of raw • Increased level of TSP due • All storage and transported Short-term The air pollution construction materials to spillage or wind-blown material especially bulk within the problem is such as cement, sand, dust from uncovered material, should be properly duration of the considered to be gravels. material which may have covered and secured with proposed short-term problem some effects on aesthetic ropes to prevent spillage Project. and localised value and health aspects. and wind-blown dust. within the working • The leveling of ground and • Provision of wash trough. areas. the use of heavy machinery • Constant wetting and for the compaction of the fill cleaning of roads material during earthwork connecting the Site to and construction activities external public roads. will give rise to dust • Regular maintenance of pollution. vehicles and machinery, • Traffic movement on dirt and observation of speed road will churn up the limits shall reduce the level surface and may incite hazy of exhaust gases, dust as condition especially during well as vehicular noise and dry and windy periods. vibration. • The anticipated immediate • To erect hoarding along the receptors of air quality boundary of the Project degradation are residents of Site. Desa Sentosa, Taman Desa Sentosa, Kg. Bahagia

f-viii EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT and Taman Impian Putra as well as Jalan Bangi, Jalan Kajang- Dengkil and PLUS users. • Based on prevailing wind occurrence from north-south direction, the immediate sensitive receptors are the residents of Taman Desa Sentosa, MINT Workers Quarters and road user of Jalan Kajang-Dengkil. • Based on on-site examination, prevailing wind might not directly affect residents of Taman Desa Sentosa, Kg. Bahagia and MINT Workers Quarters. Noise Pollution Earthwork • Nearest receptor, i.e., residents • Noisy construction Similarly with of Taman Desa Sentosa and activities should be done air pollution, Desa Sentosa which are located only during day-time to noise pollution approximately 96m and 110m to preserve tranquility of is also localized the north and northwest of the night-time and reduce and short term. Project Site shall experience level of nuisance to excessive noise level emitted surrounding population. from tractors, scrappers, trucks and, jackhammer/rock drills.

f-ix EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Building and • Piling Activities • The distance from the nearest • Method of piling Short-term Infrastructural Works • Construction Debris possible piling area i.e., Landed recommended is by using within the • Traffic and Housing Strara 2 at western part hydraulic pile or jack in duration of the Transportation of the Project site to the nearest pile to reduce the impact proposed Impact house of the existing settlement on the noise at the Project. of Desa Sentosa and Taman nearest proposed building Desa Sentosa is approximately to the existing buildings. 220m and 310m, respectively. • All domestic and building • Sedimentation is likely to occur , waste will be disposed higher rainfall runoff on land offsite to an approved surfaces; as a result the scour dumpsite. problems occur and increase • Traffic management is sedimentation into stream. necessary to control • Improper disposal of construction traffic movements debris may eventually clog especially during peak drains, affecting the appearance hours. of the Project Site. • During construction stage, lorries and trucks delivering building materials, aggregate, etc will increase traffic flow of the area.

f-x EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT C. Operational Phase

Stormwater • Implementation of the • Without a proper drainage • The project area divided It is anticipated Management Project requires the planning and stormwater into 6 sub catchments. that there will be installation of various management, water quality • The total area provided for no localized stormwater and surface runoff will be detention ponds are 13.38 flooding upon management practices disturbed as the landuse acre or 3.26% of the project construction of to retard the abrupt flow constituent of the Project Site site. an efficient of the runoff as will have gone through a • There are altogether five drainage enunciated by Jabatan major alteration. (5) numbers of detention system. Pengairan dan Saliran ponds draining to their (JPS) “storm discharge” respective rivers (i.e. Sg. concept. Langat) and one (1) detention pond draining to Sg. Semenyih. Water Pollution • The wastewater from • Any discharge that fails to • Sewage from this area will Short-term. The design of sewage the human population comply with Standard A be conveyed by three (3) treatment plant shall (P.E of 60,000) at full levels, will pollute the pumping station and gravity comply to “Malaysian operational stage is receiving river. flow into the proposed 5.80 Sewerage Industry approximately • Indiscriminate dumping of acres of Sewage Treatment Guidelines –Volume IV 13,500,000 l/day. waste into the drainage Plant which is eventually – Sewage Treatment system would degrade the discharge into Sg. Langat. Plants (Third Edition water quality. • The results from water SPAN 2009)” modeling QUAL2E for STP discharge under worst case scenario shows it still complies with the discharge limit due to the water dilution factor.

f-xi EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT • The ammoniacal nitrogen will be able to be treated with a proper sewage pollution control and prevent its loading accumulation into Sg. Langat.

Waste Management • Solid waste expected to • Improper disposal of solid • Implementation of a proper -Solid Waste be generated from the waste may affect aesthetic and adequate waste community on-site is quality, a source of water collection system by the 60,000 kg/day. contamination and Local Authority. proliferation of disease • Solid waste generated will vectors. be disposed off at the legal dumpsite i.e., Tanjung 12 landfill, Kuala Langat located approximately 25km southwest of the Project Site. -Sullage and Kitchen • All drainage systems and • Grease traps must to be Waste Management at piping will be clogged if the prepared for all kitchens in Club House sullage and kitchen wastes the cafeteria and food court are discharged without a to trap the Fat, Oil and proper trap. Grease (FOG).

f-xii EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont….

PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Traffic • The increase in traffic • An increase in traffic • A new interchange and Residual impacts activities would be a volume at Jalan Kajang internal road network will be source of impact on Dengkil, Jalan Kajang introduced to connect both the air and noise Dengkil (B18)-Jalan directly to Jalan Kajang- quality. Bangi (B17) and Jalan Dengkil and Kuala Lumpur- Teras-Jalan Bangi (B17) Seremban Expressway in is expected once Mukim Dengkil. Project is completed. • Upgrading of Jalan Kajang- • Based on the trip Dengkil (B18) to Jalan generation exercise, the Bangi (B17) and Jalan proposed development Teras-Jalan Bangi (B17) by in Mukim Dengkil is widening and signalizing the expected to generate junctions. 2713 pcu/hour and attract 4461 pcu/hour during the morning peak whilst at evening peak, it is expected to generate 5035 pcu/hour and attracts 3630 pcu/hour.

f-xiii EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Air and Noise • The increase in traffic • The traffic emissions are • Provision of sufficiently Residual impacts activities would be a expected to be the major sized junctions, traffic source of impact on source of air pollution in signages and proper both the air and noise the area. Air pollutants maintenance of road quality. such as dust, smoke and network system. exhaust gases are mainly • Regulatory procedures or traced to vehicular control of traffic emissions combustion. to comply with the • The increasing traffic legislative limits. activities and human • Provision of adequate and activities are the main efficient road systems to contributing factors to reduce traffic congestion. noise pollution which • Vegetations to absorb the would primarily come atmospheric pollutants. from heavy vehicles movement and other transport related activities. • Movement of vehicular at Jalan Bangi, Jalan Kajang-Dengkil and Kuala Lumpur-Seremban Expressway is minimal to the proposed residential area as those roads are located next to the proposed commercial area. • Based on the prevailing wind from North to Southeast direction, Project area may not be directly affected by air- borne particulates release from the traffic activities.

f-xiv EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…’ PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Biological Environment • Enhance the • Biological impacts are • Re-establish and diversify Long-term. aesthetic value of the basically upon re-planting the flora and fauna Project Site with of greeneries by species, albeit nominal in landscape establishment of buffer the Site. programme. zones and landscaping. • Implementation of • This activity could further aesthetically pleasing, attract some fauna species visually enhancing and to the Project Site. extensive landscaping will • The loss of the existing attract a community of terrestrial biological small animals and provide environment during the a wholesome establishment of a built environment. development. Socio-economic • The potential positive • Increase current status of None Long-term. Environment impacts on the socio- living of the local economic population residing nearby environment are in terms of public utilities, evident with the amenities, infrastructures implementation of the and increase employment proposed Project. opportunities.

f-xv EIA for the Proposed Commercial and Residential Development at Kampung Sungai Buah, Mukim Dengkil, District of Sepang, Selangor Darul Ehsan for Tristar Acres Sdn. Bhd.

Cont…. PHASE OF ACTIVITIES POTENTIAL IMPACTS MITIGATING MEASURES SIGNIFICANCE REMARKS DEVELOPMENT Residual impacts • Potential residual • Discharges from the impacts are from sewage treatment plant water, noise and air. which eventually flow into Sg. Langat. • The proposed Project does not warrant serious environmental concern in terms of anticipating any excessive noise nor gaseous pollutants being emitted to such an extent that it affects the living ambience of adjacent developments

f-xvi