East Cambridgeshire District Council Water Cycle Study Detailed ...

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Table 2-1: Summary of housing figures to be assesses for East Cambridgeshire Stage 2 Water Cycle Study: Final Report Sept 2011 20 Cambridgeshire Horizons East Cambridgeshire – Detailed WCS Outstanding Outstanding Preferred Preferred Net commitments commitments options for options for Windfalls % of completions (sites over 50 (sites under allocation (>50 allocation (10- (2011- housing Settlement 2001-10 dwellings) 50 dwellings) dwellings) 50 dwellings) 2031) TOTAL supply Ely 2098 140 75 3326 56 135 5830 38.30% Soham 698 193 186 1240 71 240 2628 21.80% Littleport 571 604 187 182 39 140 1723 11.30% MARKET TOWNS 3367 937 448 4748 166 515 10181 71.40% Bottisham 26 0 50 50 0 36 162 1.10% Burwell 256 0 31 100 15 76 478 3.10% Haddenham 98 0 17 0 14 73 202 1.30% Newmarket Fringe 24 0 8 0 18 28 78 0.50% Sutton 325 0 36 0 80 108 549 3.60% KEY SERVICE CENTRES 729 0 142 150 127 321 1469 8.70% Fordham 40 0 11 0 0 46 97 0.60% Isleham 44 0 32 0 0 60 136 0.90% Little Downham 119 0 6 0 0 92 217 1.40% Stretham 60 0 11 0 0 44 115 0.80% Witchford 79 0 8 0 0 37 124 0.80% Wilburton 53 0 6 0 0 32 91 0.60% LIMITED SERVICE CENTRES 395 0 74 0 0 311 780 5.10% Smaller villages 315 0 54 0 0 313 682 4.50% Other housing in the countryside (including rural exception sites) 511 0 183 0 0 733 1427 9.40% TOTAL 5317 937 901 4898 293 2193 14539
2.3 Employment Stage 2 Water Cycle Study: Final Report Sept 2011 21 Cambridgeshire Horizons East Cambridgeshire – Detailed WCS ECDC provided estimates of land availability for preferred employment areas in the district. Until the employment study has been completed by ECDC, it is not possible to provide an accurate assessment of the likely number of jobs the proposed employment sites will provide and hence, how much additional water demand will be created. In order to determine the likely magnitude of jobs, a basic assumption was applied to how many jobs a hectare of employment land may provide on average 8 The total to be assessed in the Stage 2 WCS is 12,706 jobs (B1, B2 and B8). This has been calculated from a total of the: • outstanding commitments (sites over 1ha); • outstanding commitments (sites under 1ha); and • preferred options for allocation (>1ha). The net completions 2001-10 have not been included within the total to be assessed, as these employment sites have already been developed and it is therefore assumed that wastewater flows from these will already be accounted for in the measured flows at the WwTWs. To add these sites to the totals to be assessed would therefore be ‘double counting’; hence net completions have been excluded. For the assessment of water resource availability, all sites have been assessed. However for the assessment of WwTW capacity, not all the proposed employment sites have been assessed. For example, the land proposed for ‘Smaller Villages’ have not been included in the assessment. While this will lead to a degree of underestimation of the post growth flow to the WwTW, no locations are available for these sites. It is therefore not possible to identify the WwTW catchment to which the new employment will drain and an assessment of the WwTW capacity implications of the proposed growth is not possible. Only the Preferred Options sites have been assessed for effects on WwTW capacity. Similarly, only the Preferred Option sites will be assessed for site specific infrastructure (sewer network or on-site surface water management systems). Table 2-2 below gives a summary of the employment figures to be assessed under the Stage 2 WCS. 2.3.1 Potential Sites Locations The potential broad distribution of development, as identified by ECDC, is shown in Table 2-1 (above) and Table 2-2 (below). Of these, five settlements in the district have potential growth sites of over 50 dwellings or employment sites over 1 Ha. They include preferred broad growth areas identified in the Council’s adopted Core Strategy, and a number of potential areas identified in the Ely, Soham and Littleport Masterplans. The locations of these are shown in Figures 2-1 to 2-5 below. Housing sites are highlighted with a red boundary, and employment sites in yellow. 8 An average figure of 110 jobs per hectare was used based on a conservative assumption
Page 1 and 2: East Cambridgeshire District Counci
Page 3 and 4: Table of Contents Cambridgeshire Ho
Page 5 and 6: Executive Summary Stage 2 Water Cyc
Page 7 and 8: Stage 2 Water Cycle Study: Final Re
Page 9 and 10: Surface Water Drainage Management S
Page 11 and 12: SWM5 - Linkages to SWMP and SFRA St
Page 13 and 14: Glossary of Acronyms and Abbreviati
Page 15 and 16: Abbreviation Description RTPI Royal
Page 17 and 18: 1.3 Stage 2 - Study Governance Stag
Page 21 and 22: • Surface Water Management Plan f
Page 23: 2 Proposed Growth 2.1 Preferred Gro
Page 27 and 28: Figure 2-1: Potential development s
Page 29 and 30: Relevant WwTW Stage 2 Water Cycle S
Page 33 and 34: WwTW Soham Burwell Bottisham Hadden
Page 36 and 37: 3.2.2 Results Discussion WwTW Soham
Page 38 and 39: WwTW Consent parameter Stage 2 Wate
Page 46 and 47: Table 3-7: Potential Impact of Clim
Page 48 and 49: 3.3 Ecological Appraisal Stage 2 Wa
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Page 62 and 63: Site Description of potential waste
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Page 66 and 67: Bottisham Site Assessment Site Desc
Page 70 and 71: Impact on Supplies Stage 2 Water Cy
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Stage 2 Water Cycle Study: Final Re
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Low flow taps and showers Stage 2 W
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Figure 4-1: A typical domestic rain
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Medium Scenario The key assumptions
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Table 4-7: Details of new Build Spe
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WN Scenario New development Water u
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Operation of GWR £30 per annum 82
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Table 4-12: Estimated Cost of Neutr
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Figure 4-3: CO2 emissions from a
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4.4.7 Preferred strategy - delivery
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5 Surface Water Management 5.1 The
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• continuous surfaces with an inh
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5.5.1 Ecological opportunities Ely
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Site Stage 2 Water Cycle Study: Fin
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5.5.7 SuDS and groundwater protecti
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Lisle Lane, Ely 2.855 2.28 1,038 -
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Land rear of Fordham Road, Soham 2.
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6.3.3 Wastewater Network constraint
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6.4.4 Phasing Assessment Phase Dwel
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7.2 Climate Change and the Water Cy
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Directive/Legislation/Guidance Desc
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Key Additional development can be a
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Consents to achieve ‘Good Status
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MASS BALANCE CALCULATION: MONTE CAR
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LITTLEPORT STW Current Quality Cons
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HADDENHAM STW Current Quality Conse
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Sequencing Batch Reactor Stage 2 Wa
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Tertiary treatment Stage 2 Water Cy
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East Cambridgeshire WCS Flood Estim
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11 12 12 Is the discharged water on
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37 38 40 41 42 A) Have you provided
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