Culvert A

Item Description	Cost
a) Supply and install precast concrete box culverts	$176,474.03
b) Supply and install asphaltic waterproofing membrane	$2,988.00
c) Supply and install 0.2m thick granular bed	$1,580.47
d) Supply and install headwalls at culvert ends including SSP	$126,944.96
e) Supply and place precast concrete block walls	$6,432.00
f) Suppy and place granular 'A' on top of culverts	$2,123.94
g) Supply and install 100mm dia. drain tile with filter sock	$989.62
h) Supply and install chain link fence on block walls	$7,572.74
Culvert A Subtotal	=$ 325,105.76

Culvert B

Item Description	Cost
a) Supply and install precast concrete box culverts	$110,882.59
b) Supply and install asphaltic waterproofing membrane	$1,992.00
c) Supply and install 0.2m thick granular bed	$1,053.65
d) Supply and install headwalls at culvert ends including steel	$168,855.56
e) Supply and place precast concrete block walls	$15,168.00
f) Suppy and place granular 'A' on top of culverts	$1,415.96
g) Supply and install 100mm dia. drain tile with filter sock	$659.74
h) Supply and install chain link fence on block walls	$7,572.74
Culvert B Subtotal = $ 307,600.24
Culvert Works Subtotal = $ 632,706.00

8.4 Jetty Works 

Item Description	Cost
a) Construct rock Jetty at the south side of drain outlet	$194,090.96
b) Supply, install and moor DSS Marine Buoy at jetty	$2,199.50
Jetty Works Subtotal	= $ 196,290.46