Environmental Engineering

Environmental Engineering at LDE

At LDE, our suite of Environmental Engineers offer the full spectrum of environmental expertise. We are Land and Water Environmental Science and Engineering experts with extensive experience.

We strictly follow all New Zealand standards to ensure quality and compliance. Contact us to learn more.

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Land Contamination Remediation

Water Quality & Freshwater Ecology

Environmental Compliance Monitoring

Asbestos

Geospatial Services

Acid Sulphate Soils

Advisory Services

Land Contamination Remediation

Introduction

LDE specialises in providing comprehensive environmental consulting services, with a strong focus on land contamination remediation. With over 20-years of experience, we are dedicated to helping clients navigate the complexities of land contamination, ensuring the protection of human health, the environment, and regulatory compliance. We offer integrated solutions from initial site assessment to final remediation and post-remediation monitoring.

At LDE we are committed to restoring and revitalising contaminated land, helping our clients achieve their environmental goals while safeguarding public health and promoting sustainability. Whether it’s a legacy site or a newly discovered contamination, our team is ready to provide expert guidance and high-quality remediation services to meet your needs.

1 Expertise and Approach

Our team is composed of highly skilled environmental scientists, engineers, and planning/regulatory specialists who bring extensive expertise in land contamination assessment and remediation. We utilise state-of-the-art technologies and industry best practices to deliver cost-effective, sustainable, and scientifically sound solutions. Our approach is customised to meet the unique challenges of each site, whether it involves legacy industrial contamination, chemical spills, petroleum hydrocarbons, heavy metals, or other hazardous substances.

2 Key Services

Phase I & II Environmental Site Assessments (ESAs)

Conduct thorough investigations to identify potential contaminants and assess the extent of environmental impacts.
Implement geophysical, geotechnical, and chemical testing to inform remediation strategies.

Remediation Design & Implementation

Develop and execute remediation plans tailored to the type and extent of contamination, utilising technologies such as soil excavation, bioremediation, in-situ chemical oxidation, groundwater treatment, and soil vapour extraction.
Provide management of waste disposal and regulatory reporting throughout the remediation process.

Risk Assessment & Management

Conduct human health and ecological risk assessments to determine the appropriate cleanup goals and ensure compliance with regulatory frameworks and environmental standards.
Implement strategies to reduce risk and facilitate safe land reuse.

Regulatory Compliance & Reporting

Assist clients in navigating regional and national regulations related to land contamination.
Prepare comprehensive reports for submission to regulatory authorities, ensuring adherence to required documentation and timelines.

Post-Remediation Monitoring & Maintenance

Conduct ongoing monitoring and validation of remedial activities to ensure long-term success and environmental stability.
Provide recommendations for site management and sustainability to prevent future contamination.

3 Technological Capabilities

LDE leverages cutting-edge technologies and methodologies to enhance the efficiency and effectiveness of remediation projects, including:

Geophysical surveys to assess subsurface conditions without invasive drilling
Groundwater modelling to predict contaminant transport and design appropriate treatment systems
Innovative remediation techniques such as thermal desorption, phytoremediation, and electrokinetic remediation
Real-time data collection for continuous monitoring and adaptive project management

Why Choose LDE?

successful remediation of contaminated sites across diverse industries, including industrial, commercial, agricultural, and government sectors
we prioritise cost-efficiency without compromising environmental safety or regulatory compliance
in-depth understanding of environmental regulations ensures smooth project progression and timely approvals
our solutions are designed to mitigate environmental impact and support the long-term health of ecosystems and communities

Water Quality & Freshwater Ecology

Our highly skilled Scientists provide you with technical advice at the forefront of legislation, guidance and the industry’s best practice. We will find cost-effective solutions for your water issues.

Water Contamination Capabilities

LDE's Water Contamination project examples include:

Supporting material for resource management applications
Surface water and groundwater quality investigations
Stormwater and wastewater – contaminant discharge management
Stormwater, wastewater, and groundwater contaminant assessment of effects
Compliance Monitoring for Groundwater, Stormwater, Industrial and Trade Waste
Stormwater Diversion and Discharge Consents.

Freshwater Ecology Capabilities

LDE's Preliminary Freshwater Ecological Assessments can cover:

Habitat and physical characteristics
Macrophytes
Periphyton Cover
Aquatic macroinvertebrates
Fish from eDNA analysis
Water quality assessment against ANZECC water quality guidelines
Sediment quality assessment against ANZECC sediment quality guidelines.

LDE has strong relationships with freshwater ecologists who can provide further expertise and advice as required.

Water Contamination & Freshwater Ecology Consulting Examples

Our Environmental specialists often work in multi-disciplinary teams with other professionals to ensure successful project outcomes. LDE can offer various complementary services such as engineering geology and civil engineering to undertake such work as:

Stormwater management, treatment, and hydrological modelling
Onsite wastewater system design
Accredited farm effluent system design
Sewage and Dairy effluent pond design
Surface and groundwater quality testing, analysis and remediation.

Combining these competencies and complementary services ensures that we can address multiple requirements for our clients.

Environmental Compliance Monitoring

Introduction

LDE is a trusted provider of environmental compliance monitoring services, dedicated to helping businesses and organisations meet and exceed environmental regulations. With extensive experience across various industries, we deliver tailored, cost-effective solutions that ensure environmental compliance while minimising risk and promoting sustainability. Our approach combines expert knowledge of environmental laws with innovative monitoring technologies to provide ongoing, real-time assessments that support informed decision-making and regulatory adherence.

At LDE we are committed to helping clients navigate the complexities of environmental regulations with robust monitoring solutions that ensure compliance and support long-term sustainability. Whether it's air, water, waste, or other environmental concerns, our team delivers the expertise, technology, and reporting capabilities needed to mitigate risks and maintain environmental stewardship.

1 Expertise and Approach

Our team of environmental professionals brings deep knowledge of environmental laws, permitting processes, and regulatory frameworks. We work closely with our clients to develop customised compliance monitoring programs that align with their specific operational needs and regulatory obligations. Using advanced tools and methodologies, we provide comprehensive monitoring, reporting, and corrective action services to ensure continuous compliance and environmental protection.

2 Key Services

Environmental compliance audits and assessments
- Conduct thorough audits to assess compliance with environmental laws, regulations, and permits/consents.
- Identify potential risks, liabilities, and areas for improvement, and provide actionable recommendations for corrective action.
Air quality monitoring
- Implement air quality monitoring programs to track emissions, including particulate matter (PM), volatile organic compounds (VOCs), sulphur dioxide (SO₂), nitrogen oxides (NO_x), and greenhouse gases (GHGs)
- Support clients in meeting air quality standards and obtaining necessary consents from regulatory agencies
Water quality monitoring

Monitor surface water, groundwater, and stormwater to ensure compliance with water quality standards, including parameters such as pH, turbidity, dissolved oxygen, total suspended solids (TSS), and nutrients
Support clients in the development and implementation of Best Management Practices (BMPs) to prevent water contamination and minimise the environmental impact of discharges

Waste management and hazardous materials compliance

Monitor and manage hazardous waste disposal, tracking, and reporting to ensure compliance with regional requirements and national regulations
Provide on-site inspections, waste characterisation, and recommendations for proper storage, handling, and disposal

Regulatory reporting and documentation

Prepare and submit required reports and documentation to regulatory agencies, including national agencies, and local authorities
Ensure all regulatory requirements, such as air and water discharge consents, hazardous materials inventories, and waste disposal records, are met on time and in full

Environmental Impact Assessments (EIA) and consent support:

Assist clients in preparing environmental impact assessments (EIAs) and securing necessary consents for construction, expansion, or operational changes
Guide clients through the consenting process, ensuring compliance with environmental regulations and promoting project success

Training and education

Provide compliance training programs for staff to ensure that all personnel are aware of their environmental responsibilities and best practices for maintaining compliance
Offer customised workshops on environmental regulations, safety procedures, and sustainability initiatives

3 Technological Capabilities

LDE utilises advanced technology to enhance the efficiency and accuracy of environmental compliance monitoring:

Real-time environmental sensors to continuously monitor air, water, and waste parameters for immediate reporting and compliance
Geographic Information Systems (GIS) for mapping environmental data and assessing spatial compliance with zoning and regulatory requirements
Data analytics and reporting tools to streamline data collection, analysis, and report generation, ensuring compliance with both internal and external standards

Why Choose LDE?

expertise in environmental regulations, ensuring clients meet compliance requirements across multiple jurisdictions
successful environmental compliance monitoring for industries including manufacturing, energy, construction, agriculture, and government sectors
tailored monitoring programs to suit the specific needs and operations of each client, minimising risk and maximising efficiency
our streamlined approach ensures that clients receive accurate, actionable data and reports in a timely manner to avoid compliance breaches and fines

Asbestos

Introduction

LDE provides comprehensive asbestos testing, treatment, and remediation services to ensure the safety of clients, employees, and the environment. With over 20-years of experience in environmental health and safety, we specialise in managing asbestos-related risks in residential, commercial, industrial, and governmental settings. Our approach combines expert knowledge of regulatory requirements with cutting-edge techniques to deliver safe, efficient, and compliant asbestos management solutions.

At LDE we are committed to providing safe, compliant, and cost-effective asbestos testing, treatment, and remediation solutions. Our team’s expertise and dedication to quality ensure that your asbestos concerns are addressed promptly and professionally, minimising risks and ensuring the health and safety of all stakeholders.

1 Expertise and Approach

Our team of certified asbestos professionals, including industrial hygienists, environmental engineers, and project managers, are trained to handle the complexities of asbestos testing and remediation. We adhere to all relevant national regulations. From initial inspection and risk assessment to safe removal and post-remediation clearance testing, LDE offers a full range of services to effectively manage asbestos hazards.

2 Key Services

Asbestos inspection and testing

Conduct comprehensive site assessments to identify and evaluate the presence of asbestos-containing materials (ACMs) in buildings, industrial facilities, and outdoor environments
Utilise accredited laboratories for bulk sampling and air monitoring to confirm the presence of asbestos fibres and determine potential health risks
Provide detailed reports and recommendations for the appropriate management or removal of ACMs

Asbestos risk assessment and management plans

Develop customised asbestos management plans that prioritise safety, regulatory compliance, and cost-effective mitigation strategies
Conduct regular inspections and air monitoring to assess the condition of identified asbestos materials and ensure ongoing safety
Implement preventive measures to minimise asbestos exposure during renovation, demolition, or maintenance activities

Asbestos removal and abatement:

Safely remove asbestos materials from affected areas using certified abatement techniques and appropriate containment systems
Employ engineering controls such as negative air pressure systems, HEPA filtration, and decontamination units to prevent fibre release during removal
Ensure proper disposal of all asbestos waste in accordance with national regulations

Asbestos encapsulation and treatment

When removal is not feasible, we provide asbestos encapsulation and treatment services to seal ACMs, preventing the release of harmful fibres
Use high-quality encapsulants and coatings designed to bind asbestos fibres and protect building occupants from exposure

Regulatory compliance and reporting

Guide clients through regulatory requirements, including obtaining the necessary permits for asbestos abatement, providing notification to authorities, and ensuring proper disposal practices
Prepare and submit all required documentation, including air clearance test results, abatement reports, and waste disposal records

Post-abatement air monitoring and clearance testing

Conduct post-removal air sampling and clearance testing to verify that asbestos fibres are below regulatory thresholds, ensuring that work areas are safe for reoccupation
Provide final clearance reports to document successful remediation and compliance with environmental and health standards

3 Technological Capabilities

LDE utilises advanced technology to ensure accurate and effective asbestos testing and remediation:

Phase Contrast Microscopy (PCM) and Transmission Electron Microscopy (TEM) for precise asbestos fibre identification and quantification
Real-time air sampling equipment to monitor airborne fibre concentrations during abatement and ensure safe work environments
Asbestos management software for tracking and reporting asbestos materials, management plans, and compliance documentation

Why Choose LDE?

Our team holds certifications in asbestos inspection, testing, and abatement, ensuring the highest standards of safety and regulatory compliance
From initial assessment to post-remediation verification, we provide full-service asbestos management, minimising disruption and ensuring thorough risk mitigation
Successful projects across diverse sectors, including residential, commercial, industrial, and government buildings
We prioritise the health and safety of occupants and workers, ensuring that all asbestos-related activities are conducted in a controlled, regulated environment

Geospatial Services

Introduction

LDE provides advanced geospatial services designed to support environmental planning, assessment, and management. Our team of GIS (Geographic Information Systems) professionals, geospatial analysts, and environmental scientists uses cutting-edge technologies to provide accurate, data-driven solutions for clients across various sectors, including land management, urban planning, natural resource management, and environmental compliance. We leverage GIS, remote sensing, and spatial analysis tools to deliver actionable insights that enhance decision-making, optimise operations, and ensure regulatory compliance.

At LDE we harness the power of geospatial data to drive better environmental management, planning, and decision-making. Our comprehensive suite of geospatial services helps clients gain deeper insights into environmental conditions, optimise land use, and ensure sustainable development. Whether you’re managing natural resources, conducting environmental assessments, or planning infrastructure projects, our team is equipped to deliver the spatial solutions you need for success.

1 Expertise and Approach

LDE’s geospatial services combine deep environmental expertise with the power of spatial data analysis. Our approach integrates geographic data collection, mapping, and analysis with a focus on sustainability and environmental stewardship. Whether conducting environmental assessments, monitoring natural resources, or supporting land-use planning, our GIS-based solutions help clients visualise complex data, understand spatial patterns, and make informed, data-driven decisions.

2 Key Services

Geospatial data collection and mapping

Collect and analyse a wide range of geospatial data, including topographic, hydrological, land-use, and environmental data, using GPS, drones, and remote sensing technologies
Create accurate, high-resolution maps for site assessments, environmental studies, and regulatory compliance.

GIS analysis and modelling

Perform spatial analysis to identify environmental trends, assess risks, and predict future impacts
Utilise GIS modelling tools for tasks such as flood risk analysis, watershed management, habitat mapping, and land-use planning
Conduct spatial optimisation for resource management, infrastructure planning, and environmental restoration projects

Environmental Impact Assessments (EIAs)

Support environmental impact assessments by integrating geospatial data to assess the potential environmental effects of proposed projects or developments
Provide mapping and analysis of environmental features such as wetlands, endangered species habitats, and water bodies to inform impact mitigation strategies

Land-Use Planning and Zoning Analysis

Provide geospatial support for land-use planning, zoning, and site development
Use GIS to analyse land suitability, zoning regulations, and environmental constraints, helping clients make informed decisions for land development and resource management.

Environmental monitoring and management

Develop geospatial databases for continuous environmental monitoring and management
Track environmental changes over time (e.g., land degradation, water quality trends, vegetation health) using time-series data and GIS tools to support adaptive management practices

Habitat and biodiversity mapping

Map critical habitats, wildlife corridors, and biodiversity hotspots to inform conservation and land management strategies
Integrate remote sensing data and field observations for habitat suitability modelling and biodiversity assessments

Custom GIS solutions and software development

Provide tailored GIS solutions to meet the specific needs of our clients, including custom software development, automated workflows, and mobile GIS applications
Offer web-based mapping platforms for real-time data access and collaboration among stakeholders

3 Technological Capabilities

LDE uses a range of advanced tools and technologies to deliver high-quality geospatial services:

ArcGIS and QGIS for spatial analysis, mapping, and data management
Remote sensing technologies, including satellite imagery and drone-based mapping, for collecting environmental data at scale
Geospatial databases (e.g., SQL Server) for managing large datasets and enabling spatial queries and analysis
LiDAR and UAV technology for high-resolution topographic mapping and vegetation analysis
Web GIS Platforms (e.g., ArcGIS Online) for delivering interactive maps and spatial data to stakeholders

Why Choose LDE?

our geospatial experts have years of experience in environmental consulting, ensuring high-quality, actionable spatial insights tailored to your needs
we integrate geospatial data with environmental expertise to provide holistic, data-driven solutions for land management, natural resource conservation, and regulatory compliance
our use of the latest GIS software, remote sensing tools, and spatial analysis techniques ensures accurate, reliable results
we tailor our geospatial solutions to meet the unique needs of each project, whether it’s for a small-scale site assessment or a large-scale environmental management plan

Acid Sulphate Soils

Introduction

LDE specialises in the assessment, management, and mitigation of acid sulphate soils (ASS) - soils containing iron sulphides that, when disturbed, can release sulfuric acid, leading to severe environmental degradation. Our expert team offers comprehensive services in assessing the presence of acid sulphate soils and developing detailed, site-specific management plans to minimise environmental and infrastructure risks. We combine soil science, hydrology, environmental modelling, and regulatory knowledge to deliver effective solutions that ensure compliance and protect sensitive ecosystems.

At LDE we are committed to providing expert, science-based solutions for the identification, management, and remediation of acid sulphate soils. Our tailored management plans help mitigate the risks of acidification, protect water quality, and support sustainable land development. Whether for land restoration, construction, or environmental compliance, our team delivers the expertise and practical solutions needed to address acid sulphate soils effectively.

1 Expertise and Approach

Acid sulphate soils are a significant concern for land development, agriculture, and environmental conservation, as their disturbance can result in acid leaching, reduced water quality, and the release of harmful contaminants into surrounding ecosystems. LDE provides expert assessments to identify ASS and their potential risks, followed by tailored management plans that comply with national regulations. We prioritise sustainable practices, ensuring the protection of natural resources and long-term site safety.

2 Key Services

Acid sulphate soil (ASS) identification and assessment

conduct detailed site assessments to identify the presence of potential acid sulphate soils. We use field sampling and laboratory analysis to measure key parameters, including pH, potential acidity (PA), actual acidity (AA), and iron sulphide content.
Utilise GIS tools to map the distribution of ASS across the site, helping clients visualise spatial risk factors and plan mitigation strategies effectively
Assess the environmental risks associated with disturbed ASS, including impacts on groundwater, surface water, and biodiversity, to guide management actions.

Acid sulphate soil management plans

develop comprehensive management plans tailored to the site’s specific conditions and land use. These plans include measures to minimise oxidation of ASS, manage water flow, and control acid leaching.
recommend best management practices (BMPs) such as soil neutralisation (lime treatment), water management (eg drainage control), and capping to prevent acidification and mitigate potential contamination.
ensure all management plans meet environmental regulatory requirements, such as those at national-level regulations, facilitating permitting and approval processes

Acid sulphate soil monitoring and treatment

implement a monitoring program to track the effectiveness of acid sulphate soil management strategies, including regular soil testing, water quality assessments, and post-treatment evaluations
provide solutions for remediation and treatment of disturbed ASS, such as soil capping, treatment with neutralising agents (e.g., lime), and long-term monitoring to ensure the success of the mitigation efforts

Environmental Impact Assessments (EIAs)

conduct EIAs to evaluate the potential environmental impacts of land development or site disturbance involving acid sulphate soils. This includes identifying mitigation measures and ensuring compliance with regulatory standards to prevent harm to water bodies, ecosystems, and infrastructure.
prepare detailed EIA reports, highlighting the findings of the acid sulphate soil investigation and management recommendations

Client education and capacity building

offer training and guidance for landowners, developers, and contractors on how to identify acid sulphate soils and implement effective management strategies
ensure that stakeholders understand the risks of ASS and the regulatory requirements for managing these soils to foster sustainable practices across projects

3 Technological Capabilities

LDE uses a range of advanced tools and technologies efficient acid sulphate soil assessments and management:

mapping and spatial analysis of acid sulphate soils across large sites and accurately assessing environmental risk
partnering with accredited labs to conduct detailed soil testing for pH, acidity, and sulphur content
prediction of the movement of acid from disturbed soils into water systems, ensuring that management plans are robust and effective
real-time water quality monitoring and soil sensors to assess the ongoing impacts of ASS and ensure compliance with treatment strategies

Why Choose LDE?

our team combines deep knowledge of soil chemistry, hydrology, and environmental management to provide accurate assessments and effective management solutions for acid sulphate soils
from initial risk assessments to full-scale management plans and ongoing monitoring, we offer end-to-end solutions for managing ASS impacts
successful projects across a wide range of industries, including construction, land development, agriculture, and environmental restoration
we ensure that all recommendations and actions comply with national regulations, helping clients navigate permitting processes and avoid environmental liabilities

Advisory Services

Introduction

LDE is a leading provider of advisory services for environmental practices, with a specialised focus on carbon footprint assessments and management. As organisations and governments face increasing pressure to reduce their environmental impact, we offer comprehensive consulting services to help clients measure, manage, and mitigate their carbon emissions. Our team combines technical expertise in environmental science with strategic insights, enabling businesses to develop actionable sustainability plans that drive environmental performance, reduce carbon footprints, and achieve long-term sustainability goals.

At LDE we are committed to helping clients reduce their carbon footprints and develop robust, sustainable practices that align with both environmental goals and business objectives. Our advisory services empower organisations to take measurable action on climate change, reduce operational costs, and meet evolving regulatory and stakeholder expectations. We offer practical, science-based solutions that drive impactful change and enhance the long-term resilience of our clients’ operations.

1 Expertise and Approach

In LDE we recognise that addressing carbon emissions is integral to achieving corporate sustainability, regulatory compliance, and operational efficiency. Our approach to carbon footprint assessments and management is based on global standards, including the Greenhouse Gas Protocol and ISO 14064, and is tailored to meet the unique needs of each client. From initial carbon assessments to the development of customised reduction strategies, we provide end-to-end support in achieving measurable, impactful reductions in carbon emissions.

2 Key Services

Carbon footprint assessment

conduct comprehensive assessments to calculate the carbon footprint of an organisation, product, or service. This includes the measurement of direct (Scope 1), indirect (Scope 2), and value chain (Scope 3) emissions.
utilise industry-standard methodologies and tools to provide accurate emissions data across key areas such as energy use, transportation, supply chains, and waste management
identify emission hotspots and provide insights into where emissions reductions can be achieved most effectively

Carbon reduction strategy development

develop tailored carbon management strategies that align with business objectives, regulatory requirements, and sustainability goals
recommend specific actions to reduce emissions, including energy efficiency measures, renewable energy adoption, waste reduction, sustainable sourcing, and changes in operations
prioritise reduction opportunities based on cost-effectiveness, impact potential, and alignment with the organisation’s sustainability vision

Carbon management and reduction implementation

support the implementation of carbon reduction strategies through project management, process optimisation, and energy management
assist clients in adopting carbon offset programs, including purchasing carbon credits or investing in nature-based solutions like reforestation and soil carbon sequestration
establish monitoring and reporting systems to track progress against reduction targets and adjust strategies as necessary

Sustainability reporting and disclosure

assist clients in preparing sustainability reports and disclosures, including meeting the requirements of frameworks like the Global Reporting Initiative (GRI), CDP (formerly Carbon Disclosure Project), and Task Force on Climate-related Financial Disclosures (TCFD)
provide guidance on transparent and accurate reporting of carbon emissions, reduction efforts, and climate risks to stakeholders, investors, and regulatory bodies

Regulatory compliance and risk management

ensure compliance with environmental regulations, including national, and international carbon reduction mandates and emission trading schemes (eg ETS)
provide advice on potential risks related to carbon pricing, emissions caps, and evolving climate policies that may impact operations.
help clients prepare for emerging regulatory requirements related to carbon emissions

Employee engagement and education

develop and deliver training programs to engage employees in sustainability efforts, raising awareness of their role in reducing the company’s carbon footprint
provide workshops on energy-saving practices, sustainable transportation options, and waste reduction to promote a culture of environmental responsibility across the organisation

3 Technological Capabilities

LDE uses advanced software and tools to support carbon footprint assessments and management:

utilise software such as Carbon Trust Footprint Calculator and GHG Protocol tools to calculate and track emissions
use available/common platforms like Energy Star for data collection, tracking, and reporting
leverage data analytics tools to assess trends, identify inefficiencies, and optimise carbon reduction initiatives

Why Choose LDE?

our team of experienced environmental consultants provides industry-leading expertise in carbon footprint management, emissions reduction, and sustainability practices
we offer customised, strategic solutions that align with other organisation’s unique goals and operational challenges
LDE has a successful history of working with clients across diverse sectors, including manufacturing, energy, commercial real estate, and public sector organisations, helping them achieve meaningful reductions in their carbon footprint
from initial assessments to long-term sustainability strategies, we provide end-to-end advisory services for all aspects of environmental management and carbon footprint reduction

Environmental Engineering