Consultee Comment for planning application 6/2015/1960/FULL

Unit 13 Peartree Farm, Welwyn Garden City, AL7 3UW

Demolition of existing timber warehouse building and erection of detached brick built building for B1 use from warehouse use.

Environmental Health

Contaminated Land: [Residential Extensions and] small developments Unexpected Finds Condition During excavation works the developer shall take account of any changes in ground conditions such as colour variations, any odour or liquid/solid substances encountered. If significant visual or olfactory evidence of contamination is discovered during development it shall be fully assessed and an appropriate remediation scheme shall be submitted to the Local Planning Authority for written approval. Before any part of the development hereby permitted is occupied the developer shall provide written confirmation that all works were completed in accordance with the revised remediation scheme. CONSTRUCTION NOISE AND DUST CONTROL Noise control 1. All works and ancillary operations which are audible at the site boundary, or at such other place as may be agreed with the Council, shall be carried out only between the hours of : 8.00am and 6.00pm on Mondays to Fridays 8.00am and 1.00pm Saturdays and at no time on Sundays and Bank Holidays 2. The best practicable means, as defined in section 72 of the Control of Pollution Act 1974, to reduce noise to a minimum shall be employed at all times 3. All plant and machinery in use shall be properly silenced and maintained in accordance with the manufacturers? instructions 4. All compressors shall be sound reduced models, fitted with properly lined and sealed acoustic covers, which shall be kept closed whenever the machines are in use. All ancillary pneumatic percussive tools shall be fitted with mufflers or silencers of the type recommended by the manufactures. 5. All machines in intermittent use shall be shut down during intervening periods between work, or throttled down to a minimum. Noise emitting equipment, which is required to operate continuously, shall be housed in suitable acoustic enclosures. 6. Items of plant and equipment shall be maintained in good condition so that extraneous noise from mechanical vibration, squeaking or creaking is reduced to a minimum. 7. All pile driving shall be carried out by a recognised noise reducing system. 8. Where practical, rotary drills and bursters, actuated by hydraulic or electric power shall be used for excavating hard material 9. In general, equipment for breaking concrete and the like, shall be hydraulically actuated. 10. ?BS 5228 Noise Control on Construction Sites? should be referred to for guidance in respect of all work carried out by the developer, their main contractor and any sub contractors. 11. Any emergency deviation from these conditions shall be notified to the Council without delay 12. Any planned deviations from these conditions for special technical reasons, shall be negotiated with Council at least 14 days prior to the commencement of the specific work. 13. Permissible noise levels are not specified at this stage. Dust control 1. All efforts shall be made to reduce dust generation to a minimum . 2. Stock piles of materials for use on the site or disposal, that are likely to generate dust, shall be sited so as to minimise any nuisance to residents or neighbouring businesses. Materials for disposal shall be moved off site as quickly as possible. 3. Water sprays shall be used, as and when necessary, to reduce dust from particularly "dusty" activities or stock piles. LIGHTING 1. A scheme for external lighting at the site shall be submitted and agreed prior to commencement of development. All fixed lights shall be fitted with fully adjustable hoods to minimise glare and light pollution 2. If within a period of 12 months following the first use of agreed lighting scheme the Planning Authority requires the alignment of the lights to be adjusted and/or additional hoods or shields to be fitted, this shall be carried out in accordance within 7 days of official notification. Tim Croot Environmental Health Officer, Public Health and Protection, Welwyn Hatfield Borough Council, The Campus, Welwyn Garden City, Herts, AL8 6AE D.D. 01707 357267 Email: t.croot@welhat.gov.uk