Engineering services

Tender description

Non-Exclusive Framework Contract for The Provision of Engineering Services to support the Authority's work of remedying the effects of past mining. Provision of civil and structural services across the portfolio of Coal Authority works. Works could range from small domestic properties to larger schemes affecting a wider area and public infrastructure and buildings. It is envisaged that the services may comprise: — Structural assessment of a diverse range of structures within Coal Authority ownership or those affected by historic mining. This could include investigation as to the causes of failure, quantification of damage, provision of design solutions. — General civil and structural design. — Supervision of construction or remedial works. — Scoping and undertaking ground investigations. — Geotechnical analysis and design. — Inspection and monitoring of mining spoil heaps. — Drainage assessment and design. Provision of advice to the Authority on hydro-geological matters related to the effects of past mining legacy throughout the UK. This covers assessment and investigation of the environmental impacts from mine water related issues including: — Water Flows and discharges, — Water chemistry and contamination issues, — Waste disposal and colliery spoil sites, — Mine gas, — Recovery of geothermal energy. (ground source heat) from mine workings. The production of soundly based technical reports to support litigation/arbitration procedures and where appropriate provide an expert witness in respect of hydro-geology matters with a thorough working knowledge of all relevant legislation. There may also be the requirement to undertake on-site supervision and management of any works. To provide advice and input upon the full range of potential archaeological issues related to the development of projects. This will include liaison with consultees and the development of statements, plans and studies, and will involve input to planning applications and associated materials such as environmental impact assessments. The services may include: — Desk-based assessments, — Archive research and interrogation, — Report writing, — Field-based survey and assessment methods, — Watching Brief services. To provide the following range of services: — Preparation of planning scoping/feasibility studies for potential future development schemes, — Negotiation with local planning authorities regarding planning requirements for development schemes, including Permitted Development Rights, — Community consultation events on development schemes, — Preparation and submission of planning applications, including those requiring Environmental Statements, — Preparation of the necessary written evidence and statements together with attendance at planning appeals and inquiries, — Preparation and submission of development plan representations on behalf of the Authority, — Preparation and submission of consultation responses on behalf of the Authority as a statutory consultee. To provide advice to the Authority on environmental and ecological matters. This will include a full range of environmental and ecological services ranging from, but not limited to: — Undertaking field surveys and writing reports, — Licensed handling of ‘protected species’, developing mitigation plans, — Developing environmental action plans, — Assessment of the impact of proposed works (non-technical summaries through to full Environmental Impact Assessments), — Application for permits, — Liaison with statutory bodies, — Environmental audits and the provision of advice on environmental systems and implementation, — Environmental legislation and best practice. To provide professional services, throughout project life-cycles of scoping/feasibility/outline design/detailed design stages, including assessment of whole life costs, target cost development, delivery of pre-construction enabling investigation works, project management of the construction of mine water treatment projects, and post project review work. The scale of projects will vary from small refurbishment of existing schemes to delivery of new schemes treating coal and metal mine influenced water. Investigation, assessment of condition and preparation of remedial drainage schemes for agricultural land. Inspection, assessment of condition, design / supervision of remedial works to pumping stations, including calculation of commuted sums where applicable. Assessment, design and implementation of construction works for rivers and canals, irrigation and sewage schemes including storm water attenuation. Inspection, assessment of condition, and maintenance of sedimentation ponds, flow balancing ponds and wetland schemes, and design / supervision of new facilities, where applicable. Design and supervision of arterial drainage schemes including hydrological and hydraulic studies. Assessment of the effects of mining subsidence on surface water courses, lakes, dams and weirs. Preparation of reports, recommendations and budget cost estimates for remedial works. Provide on-site supervisory expertise and management of remedial works. Specialist construction Safety, Health and Environment (SHE) advisors to support internal project managers in fulfilling The Authority's clients and principal designer's duties under Construction (Design and Management) Regulations 2015 (CDM 2015) and provide advice in undertaking work under the Mines Regulations 2014 (Mines Regulations). This will entail fulfilling specific duties such as: — CDM 2015 — Preparing pre-construction information, undertaking design reviews, reviewing construction phase plans and collating health and safety files. It also includes completing SHE audits of construction activities. — Mines Regulations — assessing the competence of mine operators and suitability of the health and safety document prepared for the purpose of undertaking work in a mine. In addition, general SHE advice on any related issues that may arise both in relation to existing and future safety, health and environmental law may be required. Provision of inspection, surveying, reporting, remote monitoring, design and site supervision services at Blaencwm landslide and associated disused colliery tips. Along with any other specialist spoil heap and landslide hazard related services that the Authority deem appropriate; this may also include design, procurement and supervision of maintenance works, including landscaping works. Provision of research and write-up of cost benefit analysis reports to assist with the prioritisation of existing/potential treatment schemes which remediate and prevent water pollution from historic coal and metal mine workings, with the aim of improving water-body status under the Water Framework Directive. The Cost Benefit services are likely to involve: — Site visits. — Assessments undertaken using the Authority's methodology for cost benefits which considers the following categories: Property prices and regeneration, abstraction, Informal recreation, in-stream recreation, angling, heritage, biodiversity and local benefits. These services will be used to determine what the benefits of developing, or in some cases refurbishing, a mine water treatment scheme are in comparison to the cost of building and operating a treatment site. Provision of advice in relation to current mine water treatment systems/ technologies/ methodologies (both active and passive treatment schemes) and/or those which are currently being developed by researchers that could be employed at abandoned mine sites. The Authority are also investigating sites where diffuse pollution from spoil tips, tailings dams and/or abandoned ore processing areas are considered to be impacting surface waters. Consequently, advice may also be sought for the remediation of mine spoils, and other sources of diffuse metal pollutants, at sites on the current non-coal programme. In order to assess the most appropriate treatment methodology for any particular site, advice may also be sought for the design of small-scale treatment trials, both in the laboratory and in the field, for the removal of targeted metals. Furthermore, quotations may also be requested for the operation of said treatment trials, in addition to the interpretation and reporting of the results. Provide advice under all relevant EU Waste Framework Directive legislation and regulations including The Waste (England and Wales) Regulations (2011) and The Waste (Scotland) Regulations (2014). — Characterising the chemical and physical properties of waste. — Classifying waste before it is collected, disposed of or recovered. — Identifying the controls that apply to the storage and movement of waste. — Identification and completion of waste documents and records — Identification of suitable authorised waste management options including re-use, recycling and recovery. — Identification of potential hazards and mitigation measures to prevent harm to people and the environment In addition, general waste management advice on any related issues that may arise both in relation to existing and future safety, health and environmental law may also be required. Provision of a range of specialist skills associated with the assessment and investigation of contaminated land and groundwater. The services will predominantly, although not exclusively, include: — Preliminary Risk Assessment, including desk studies and development of conceptual models. — Site Walkover Surveys. — Intrusive Site investigation design and implementation. — Risk Assessment (Quantitative and Qualitative). — Remediation services including Options Appraisal, Design, Supervision, Contract Management, Validation. — Other specialist advice and guidance. The provision of NEC Project Manager and/or NEC Supervisor services for the construction phase of new build and refurbishment mine water treatment schemes. Services shall be to undertake and discharge duties and obligations as defined in the NEC family of contracts. Further services may include review of NEC contract documentation prior to issuing to Contractors and participation in the review of submissions prior to award. Detailed site surveys of land (including Tips), detailed levelling surveys around properties, with measurements as necessary. The surveys shall pick up all topographical features within the specified area of interest. Some surveys may also be required in 3 dimensional electronic data capture to allow volumetric analysis to provide cut and fill volumes in design work and will also be required for construction activities. These surveys shall pick up all topographical features within the area of interest, surveyed in such a way to enable an accurate 3 dimensional ground model to be generated. Such surveys that are require to be used for future setting out (such as for construction of a Mine Water Treatment Scheme) and must comply with site reference point conditions. Examination of Plans of past mine workings to identify which mining has affected a property. Calculations to identify the amount and direction of tilt. (These calculations will be undertaken using any site specific models which may be available and historical mining information will be provided by the Authority, where available.) Use of Site specific models derived from knowledge of the behaviour of ground movement in different areas throughout the country. In addition to the cumulative effects of all relevant mining, Calculation of values for the build-up of tilt through time. (This will enable the Authority to identify the tilt for which they have a liability.) Comparison of calculated and measured tilts (Where it is believed that tilt in a structure has not been caused by mining, then that advice is to be given to the Authority to identify the tilt for which it has a liability) Reporting of possible abnormal movement in an area as a result, for example, of fault movement.