助理環境保護主任的主要職責是: A. 空氣質素分科（a）就空氣污染、保護臭氧層及地球氣溫上升等事宜，協助擬備立法建議和制訂工作守則、指引、程序、標準、指標及策略；（b）規劃和推行與空氣質素監理及監控工作有關的空氣質素監測及調查，包括：分析和闡述所得的結果；監管儀器的檢測工作；（c）參與評估與空氣質素有關的計劃及發展大綱，並就空氣污染問題及空氣質素管制工作，提供意見及專業資料；（d）就空氣污染、臭氧層耗損及地球氣溫上升等事宜，在推行和執行法定管制方面，組織和提供專業資料，包括：處理許可證和牌照的申請；就檢控及上訴個案收集、整理和提交證據；以及（e）通過各類方法，例如擬備和介紹教育及宣傳資料，向市民和社會賢達傳達空氣質素監測政策和策略。 B. 環境評估及規劃分科（a）協助擬備與環境影響評估有關的立法建議，並就規劃及發展計劃的環境評估，制定政策、程序及規劃守則；（b）協助監理和評估大型規劃及發展計劃所需的環境影響評估，並就大型發展工程計劃進行環境評審；（c）就發展計劃及規劃事宜，整理和綜合環保技術意見；( d）就規劃及發展方案的環境評估方法和技術以及工程項目的環境監察和審核工作提供意見；以及（e）協助制訂和推行促進企業環保管理的策略，包括公私營機構的環境審核和環境管理制度。 C. 噪音分科（a）就噪音污染管制工作，協助擬備立法建議和制訂工作守則、指引、程序、標準、指標、策略及政策；（b）規劃和推行與噪音規劃及管制有關的研究、實地調查及測量，包括管理噪音測試實驗室與校準實驗室；（c）就噪音污染事宜提供聲學意見，並就與噪音污染有關的噪音規劃計劃和發展計劃，提供專業資料；（d）就噪音污染法定管制的推行和執法工作，組織和提供專業資料，包括：處理許可證申請和調查投訴，以及就檢控與上訴個案收集、整理和提交證據；以及（e）通過各類方法，例如擬備和介紹教育及宣傳資料，向市民和社會賢達傳達噪音政策和策略。 D. 廢物及水質分科（a）就管制土地／水污染與監理和處置廢物，協助擬備政策和立法建議、工作守則、指引、程序、標準、指標及策略；（b）規劃和推行有關土地／水污染的研究、管制計劃和方案和調查及測量；（c）協助研究發展液體廢物處理及處置設施，並協助研究發展和管理固體廢物設施；（d）就廢物監理與處置及土地／水污染事宜，在推行和執行法定管制方面，組織和提供專業資料，包括：處理許可證申請；以及就檢控與上訴個案收集、整理和提交證據；（e）就廢物監理及土地／水污染事宜提供意見，並就與廢物監理及土地／水污染有關的評估，提供專業資料；以及（f）通過各類方法，例如擬備和介紹教育及宣傳資料，向市民和社會賢達傳達廢物管理和水質管理政策及策略。

An Assistant Environmental Protection Officer is mainly deployed on- A. Air Stream (a) assisting in the preparation of legislative proposals, and in the development of codes of practice, guidelines, procedures, standards and objectives and strategies relating to air pollution, ozone layer protection and global warming; (b) planning and implementing programmes for air quality monitoring and investigations in relation to air quality management and control activities, including analysis and interpretation of results and supervision of instrumentation; (c) contributing to the assessment of projects and development plans with regard to air quality, and providing advice and professional input on air pollution problems and air control activities; (d) organising and providing professional input in relation to implementation and enforcement of statutory controls on air pollution, ozone layer depletion and global warming, including the processing of applications for permits and licences, and the collection, collation and presentation of evidence in prosecution and appeal cases; and (e) assisting through various means, such as the preparation and presentation of educational and publicity materials, in conveying air quality management policies and strategies to the public, and to prominent community representatives. B. Environmental Assessment & Planning Stream (a) assisting in the preparation of legislative proposals in connection with environmental impact assessment and in the development of policy, procedures and planning guidelines relating to environmental assessment of planning and development proposals; (b) assisting in the management and evaluation of environmental impact assessment required for major planning and development proposals, and carrying out environmental reviews on major development projects; (c) co-ordinating and integrating technical environmental advice in relation to development proposals and planning matters; (d) providing advice on the methodologies and techniques for environmental assessment of planning and development proposals, and in relation to project environmental monitoring and auditing; and (e) assisting in the development and implementation of strategies to promote corporate environmental management including environmental auditing and environmental management systems in the public and private sector. C. Noise Stream (a) assisting in the preparation of legislative proposals and in the development of codes of practice, guidelines, procedures, standards, objectives, strategies and policies relating to noise pollution control; (b) planning and implementing studies, field investigations and surveys in connection with noise planning and control activities, including management of an acoustic laboratory and a calibration laboratory; (c ) giving acoustic advice on noise pollution matters and providing professional input to noise planning proposals and development project assessment in relation to noise pollution; (d) organising and providing professional input in relation to the implementation and enforcement of statutory controls on noise, including the processing of applications for permits, complaints investigation, and the collection, collation and presentation of evidence in prosecution and appeal cases; and (e) assisting through various means, such as the preparation and presentation of educational and publicity materials, in conveying noise policies and strategies to the public, and to prominent community representatives. D. Waste & Water Stream (a) assisting in the preparation of policy and legislative proposals and in the development of codes of practice, guidelines, procedures, standards, objectives and strategies in relation to the control of land or water pollution, and waste management and disposal; (b) planning and implementing land or water pollution studies, control schemes and projects, and investigations and surveys; (c) assisting in studies for the development of liquid waste treatment and disposal facilities, and the development and management of solid waste facilities; (d) organising and providing professional input in relation to implementation and enforcement of statutory controls on waste management and disposal and land or water pollution, including the processing of applications for permits, and the collection, collation and presentation of evidence in prosecution and appeal cases; (e) giving advice on waste management and land or water pollution issues, and providing professional input to project assessment with regard to waste management and land or water pollution issues; and (f) assisting through various means, such as the preparation and presentation of educational and publicity materials, in conveying waste management and water quality management policies and strategies to the public, and to prominent community representatives.