Phase I Geo-Environmental Assessment
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Phase I Geo-Environmental Assessment Caw Ingredients, Leeming Bar Business Park October 2018 Cawingredients Ltd. Reference: 181005.R.001 Phase I Geo- Environmental Assessment Caw Ingredients, Leeming Bar Business Park Client: Cawingredients Ltd. Author: Reference: 181005.R.001 Name Eleanor Curry BSc (Hons) Status: Version 2.0 Signature Date: October 2018 Position Consultant Issued by: Roberts Environmental Ltd 23 Grey Street Newcastle upon Tyne Checked / Approved by: NE1 6EE Name Jeff Roberts BSc(Hons) MSc MIEnvSc CEnv Signature Telephone: 0191 230 4521 Position Director [email protected] www.robertsenvironmental.co.uk This report has been prepared by Roberts Environmental, with all reasonable skill, care and diligence within the terms of the Contract with the client, incorporation of our General Terms and Condition of Business and taking account of the resources devoted to us by agreement with the client. We disclaim any responsibility to the client and others in respect of any matters outside the scope of the above. This report is confidential to the client and we accept no responsibility of whatsoever nature to third parties to whom this report, or any part thereof, is made known. Any such party relies on the report at its own risk. Contents 1. INSTRUCTIONS .................................................................................................................... 1 2. LOCATION .......................................................................................................................... 2 4. OPERATIONAL ISSUES ........................................................................................................ 4 5. HISTORICAL DEVELOPMENT .............................................................................................. 6 6. PREVIOUS REPORTS ............................................................................................................ 7 7. GEOLOGICAL SETTING ...................................................................................................... 8 8. HYDROGEOLOGY ............................................................................................................ 10 9. HYDROLOGY .................................................................................................................... 11 10. ENVIRONMENTAL SENSITIVITY ......................................................................................... 12 11. REGULATORY DATABASES ............................................................................................... 13 13. PRELIMINARY CONCEPTUAL GROUND MODEL ............................................................. 17 14. ENVIRONMENTAL RISK ASSESSMENT .............................................................................. 19 15. CONCLUSIONS ................................................................................................................. 22 16. RECOMMENDATIONS ...................................................................................................... 23 Appendices I - Historical Mapping II - Supporting Information III - Definitions and Reservations EXECUTIVE SUMMARY SCOPE This report has been prepared for the purpose of assisting in the evaluation of Purpose of the Report potential risk associated with contamination issues at the site which is required as part of the planning application for the development of the site. It is understood that the existing Cawingredients warehouse structure is to be extended with the addition of a warehouse extension to the northern elevation. The proposed development will include a large warehouse structure with associated loading bays, pallet yard, HGV parking and an Future Site End-use infiltration pit, positioned on land to the north-east. An access road will be present on the western boundary of the site. Soft landscaping will be present on the northern boundary of the site and on the grass banking to the south- east. SITE INFORMATION Grid Reference 428200, 490510 The Cawingredients’ site comprises a large warehouse with an area of undeveloped land to the north, where the extension is to be constructed. It is situated within Leeming Bar Business Park, immediately to the southeast of Junction 51 on the A1 Motorway. The A684 road is adjacent to the norther Current Site Status boundary of the site. From an environmental perspective, the current site operations on site are not considered to pose a significant ground contamination risk to the continued use of the property. The historical assessment has identified that the site has largely remained undeveloped, possibly agricultural land from the earliest mapping dated 1857, up to mapping dated 1957, where the eastern portion of the site was denoted as comprising a sand pit which extended off-site to the north. Although no longer denoted on historical mapping after 1973, it is considered that this History could potentially have been infilled. Surrounding land uses have similarly remained largely undeveloped up to mapping dated 1957, at which point the A1 motorway is identified to have been developed on land within 30m to the west of the site. By mapping dated 1999, an industrial estate to the south is developed to within 150m south and by 2018, occupies land adjacent to the south. A review of the Envirocheck report and published British Geological Survey data, indicates the presence of artificial (made ground) deposits on the eastern portion of the site, named as infilled ground. This corresponds with the location of the sand pit identified on historic mapping, the location of this area of artificial ground does not encroach below the proposed building footprint, although it is on the area of the proposed infiltration pit. BGS mapping has identified that the site is situated within an area underlain by superficial deposits comprising Glaciofluvial Deposits of Devensian age (sand and Geology gravel). The site straddles a bedrock boundary with deposits named as the Sherwood Sandstone Group (sandstone) to the east and solid deposits of the Roxby Formation (calcareous mudstone) to the west, the proposed structure will be based upon the Roxby Formation. A review of two BGS borehole logs located on site, record interbedded glacio- fluvial and glacio-lacustrine deposits to the east and interbedded glacial and fluvio-glacial deposits to the west. See Section 8 for further information. The logs are presented in Appendix II. The Roxby Formation which underlies the site to the west, is described by the BGS to have sulphates such as Gypsum and Anhydrites within the formation. Dissolution Stability The Envirocheck report, (reference: 183370861_1_1) presented in Appendix II, Hazards has identified that there is a moderate potential for ground dissolution stability hazards, however there are no natural cavities recorded within 1km of the subject site. The strata layers of the superficial deposits, named as Glaciofluvial, are classified as a Secondary (A) Aquifer. The solid geological deposits, named as the Sherwood Sandstone Group and the Roxby Formation are classified as a Principal Aquifer and Secondary (A) Aquifer respectively. The site is not Hydrogeology situated within a groundwater Source Protection Zone and there are no potable groundwater abstraction licences within 1km of the subject site. As such, the site location is considered to be of low to moderate environmental sensitivity. There are no significant surface water features within the vicinity of the site. According to the Environment Agency’s website, the site falls within Flood Zone 1 which comprises land assessed as having less than a 1 in 1,000 annual Hydrology probability of river or sea flooding (<0.1%). Based on information contained within the Envirocheck Report areas of the site may experience a limited potential of groundwater flooding to occur at the surface of the site. No previous reports pertaining to the subject site have been made available Previous Reports for review. A review of Hambleton District County Council’s planning portal has identified three planning applications relating to the site. These are discussed further in Section 12. Regulatory It is the opinion of Roberts Environmental that there is an absence of significant Consultation source-pathway-receptor pollutant linkages and as such, should the site be investigated under the Contaminated Land Regime, it is considered unlikely that the site would be determined as Contaminated Land under Part 2A of the EPA 1990. RISK ASSESSMENT (POTENTIALLY SIGNIFICANT POLLUTANT LINKAGES) The historical assessment has identified that the majority of the site has remained undeveloped, possibly agricultural land. However, a small section of the eastern portion of the site is situated on part of an infilled sand pit. This is conjunction with Source the development of adjacent sites could have resulted in some isolated areas of residual contamination being present beneath the site. Hazard Future hardstanding and drainage infrastructure (including drainage interceptors) Identification would restrict surface water infiltration, thereby, reducing the mobility of residual contaminants (if present). Pathway When considering the nature of the proposed commercial development, there will be limited potential pollutant linkages available. Construction workers will be subjected to appropriate risk assessments. Receptor CONCLUSIONS The historical assessment has identified that the subject site has remained largely undeveloped, a small proportion of the eastern edge of the site includes part of an