Channel Enlargement (50 year) - Summary Annual Average Damage
Client/Authority
Environment Agency
Project name					Option:
Bin Brook Pre-feasibility Study					Channel Enlargement
Project reference			WNCBIN
Base date for estimates (year 0)			Oct-2002		First mid-year of damage:			0	Prepared (date)		10/28/02
Scaling factor (e.g. £m, £k, £)			£		Last mid-year of period:			49	Printed		11/07/02
Discount rate			6%		PV factor for mid-year 0:			16.650	Prepared by		MDG
									Checked by
Applicable year (if time varying)									Checked date
		Average waiting time (yrs) between events/frequency per year									Total PV
		1	2	5	10	20	50	100	200	Infinity	£
		1.000	0.500	0.200	0.100	0.050	0.020	0.010	0.005	0
Damage category		Damage £
Residential property		0	0	0	0	0	25755.12	40337.88	117992.37	195646.86	31580
Ind/commercial (direct)		0	0	0	0	0	0	0	0	0	0
Ind/comm (indirect)										0	0
Traffic related										0	0
Emergency services										0	0
Other		0	0	0	0	0	0	0	0	0	0
										0	0
										0	0
Total damage	£	0	0	0	0	0	25755.12	40337.88	117992.37	195646.86
Area (damagexfrequency)			0.00	0.00	0.00	0.00	386.33	330.46	395.83	784.10
Total area, as above						1896.72
PV Factor, as above						16.650
Present value (assuming no change in damage or event frequency)						31580					31,580
Notes
Area calculations assume drop to zero at maximum frequency.
Default value for the highest possible damage assumes continuation of gradient for last two points, an alternative value can
be entered, if appropriate.
One form should be completed for each option, including 'without project', and for each representative year if profile changes
during scheme life (e.g. sea-level rise)
Residential property, Industrial / commercial (direct), and Other damages are itemised in Asset AAD sheet and automatically linked
to this sheet