Beach Replenishment

McCallum Bros Ltd is the leading supplier of Beach Replenishment Sand to beach restoration projects in the Auckland region. Changes in the coastal structures and prevailing weather conditions have lead to the depletion of sand from many popular beaches. In many cases, increased stormwater runoff from urbanised suburbs has resulted in the original sand being washed offshore and thus lost to the beach. The replenishment projects have involved the establishment of artificial concrete reefs (groynes) along the beach to restrict sand movement during storm events and the diversion of stormwater outlets to the extreme ends where the discharge will not wash the sand offshore. McCallum Bros Ltd supply D50 Beach Replenishment Sand is taken from deep water deposits and is then transferred to the affected beach via road (by truck and trailer) or via sea (from pumping barge or barge and excavator). Beach replenishment projects:
Beach Haven June 2005	Herne Bay, Sentinal Beach, Home Bay June/July 2008
Mission Bay February 2007	Taylor's Bay (Manukau Harbour) June 2008
Manuka Road, Glenfield July 2005 & February 2007	Pt Chevalier (July 2008)
Maraetai December 2007	Torpedo Bay, Devonport (June - July 2009)
Bucklands Beach February 2008

St Helier's
	Aerial view of sand replenishment in progress at St Heliers (via Google Earth), in July 2006. The vessel Coastal Carrier is anchored in the bay beside Kaipara Ltd.'s pumping barge (top centre of picture). The sand pumped ashore to date can be seen near the left of the photograph (around 25% of the final volume).
	The beach as it was before replenishment. Increased urbanised stormwater runoff was primarily responsible for the diminishing volume of sand on the beach.

St Heliers beach replenishment

Kaipara Ltd. was responsible for pumping the sand ashore from the dredger, placing it on the foreshore and other related engineering projects to complete the beach restoration.

	Kaipara Ltd. used an excavator to distribute the sand evenly along the beach after it has been pumped ashore from the barge.
	The improving beach profile.


Restoration of St Helier's beach was completed in October 2006, many months ahead of schedule. Nearly 35,000 m³ was placed on the beach from a deep-water source 2 km offshore in the Pakiri Embayment.

Picture:St Helier's beach July 2006	Picture: St Helier's beach July 2008

Picture: St Helier's beach July 2006	Picture: St Helier's beach July 2008

Manuka Rd, Glenfield, North Shore City
Delivered 200m³ by truck & trailer for North Shore City Council, February 2007.

Picture: Truck and trailer delivering sand to Manuka road during replenishment February 2007


Pictures: Manuka road beach during replenishment February 2007	Pictures: Manuka road beach after replenishment March 2007

Beach haven, North Shore City
Delivered in 250m³ shipments on barge Moehau for North Shore City Council, unloaded by excavator from sand barge on spring high tides, June 2004 and June 2005.

Maraetai, Manukay City
Delivered by truck and trailer, December 2007

Picture: Maraetai beach December 2007 during replenishment

Picture: Maraetai beach, August 2008

Torpedo Bay, Devonport, North Shore City
Delivered by barge and distributed by digger June/July 2009

Picture: Torpedo Bay prior to sand deliveries	Picture: Torpedo Bay after replenishment - September 2009

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