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House of Assembly - Fifty-Second Parliament, First Session (52-1)
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Answers to Questions

SAND CARTING

4 Dr McFETRIDGE (Morphett) (1 June 2010). For each year since 2002—

1. What is the total tonnage of sand carted to and from South Australian metropolitan beaches by the Department of Transport and local councils, and in each instance, how much sand was carted, where was the sand transferred to and from, who was the carter and what were the associated costs?

2. How much dredged sand was used by the Department and local councils to replenish these beaches and what were the associated costs?

3. How much land based sand was transported by the Department and local councils to replenish these beaches and what were the associated costs?

4. What was the Department's annual recurrent budget and expenditure to undertake sand-bypassing at the Glenelg and West Beach harbours?

5. What were the details and associated costs of each sand management project undertaken by the Department?

6. What was the actual or estimated cost of periodic sand carting from the harbour to the dunes at West Beach and the removal of sand from the northern end of Glenelg beach to south of the channel breakwater, respectively?

7. What was Transport SA's annual recurrent budget to maintain the harbours at Glenelg and West Beach in a safe navigable condition; and undertake sandbypassing works (to maintain longshore drift) at these sites?

The Hon. P. CAICA (Colton—Minister for Environment and Conservation, Minister for the River Murray, Minister for Water): I am advised that:

1. A total of 1,725,179 cubic metres of sand has been moved since the 2001-02 financial year at a total cost of $10,301,907.

The specific volumes, locations of sand sourced and deposited from the financial year 2001-02 to the most recent financial year are detailed in Table 1.

Table 1:

m3Compacted Sand Source Sand Destination FinancialYear Cost
40,000 Glenelg Seacliff 2001-02 $300,000
22,500 Torrens outlet Henley Beach Sth 2001-02 $38,128
21,734 West Lake Shore (E. House) Tennyson 2001-02 $20,000
20,364 Glenelg Brighton 2003-04 $158,839
23,220 Glenelg Seacliff 2003-04 $202,640
30,000 Semaphore Jetty Semaphore Pk 2003-04 $90,000
15,000 Semaphore Jetty Semaphore Pk 2003-04 $90,000
120,000 Semaphore Jetty Semaphore Sth 2003-04 $330,000
15,387 Glenelg Brighton 2004-05 $153,130
11,548 Glenelg Seacliff 2004-05 $121,055
1,455 Glenelg Nth Glenelg 2004-05 $13,593
7,500 Glenelg Brighton 2004-05 No Cost To Board
18,750 Glenelg Nth Glenelg 2004-05 No Cost To Board
21,930 Torrens outlet West Beach Trust 2004-05 $116,960
14,273 Torrens outlet Brighton 2004-05 $170,815
12,277 Torrens outlet Seacliff 2004-05 $154,304
12,075 Torrens outlet Nth Glenelg 2004-05 $108,335
12,588 Torrens outlet West Beach Trust 2004-05 $70,726
7,497 Torrens outlet Henley Beach Sth 2004-05 $29,988
38,460 Glenelg Brighton 2005-06 $377,000
30,000 West Beach (Adel. Sh) Nth Glenelg 2005-06 $180,000
6,150 West Beach (Adel. Sh) West Bch Trust 2005-06 $23,500
15,380 West Beach (Adel. Sh) West Bch Trust 2005-06 $54,100
25,000 Torrens outlet Henley Beach Sth 2005-06 $137,800
23,000 Torrens outlet Brighton 2005-06 $341,000
20,130 Torrens outlet West Beach Trust 2005-06 $90,500
40,000 Semaphore Sth Semaphore Pk 2005-06 $218,000
12,220 Semaphore Jetty Semaphore Sth 2005-06 $53,700
40,000 Glenelg Brighton 2006-07 $418,951
5,826 Glenelg Brighton 2006-07 $84,148
28,935 Glenelg Brighton 2006-07 $465,950
30,000 West Beach Nth Glenelg 2006-07 $90,585
13,480 West Beach (Adel. Sh) West Bch Trust 2006-07 $43,092
34,620 West Beach West Bch Trust 2006-07 $110,260
25,000 Torrens outlet Henley Beach Sth 2006-07 $141,555
30,000 Torrens outlet West Beach Trust 2006-07 $120,000
10,000 West Lake Shore (E. House) Tennyson 2006-07 $36,802
3,850 West Lake Shore (E. House) Tennyson 2006-07 $12,320
30,770 Pt Malcolm Semaphore Pk 2006-07 $93,233
10,000 Semaphore Jetty Semaphore Sth 2006-07 $37,000
7,805 Brighton Brighton SLSC 2007-08 $35,220
14,506 Glenelg Seacliff 2007-08 $137,808
10,181 Glenelg Brighton 2007-08 $93,669
7,805 Glenelg Brighton 2007-08 $89,757
3,046 Glenelg Brighton 2007-08 $35,029
46,645 Glenelg Brighton 2007-08 $500,766
17,080 Glenelg Seacliff 2007-08 $212,646
6,457 Glenelg Seacliff 2007-08 $84,587
3,100 West Beach (Adel. Sh) West Bch Trust 2007-08 $12,990
91,806 West Beach (Adel. Sh) West Bch Trust 2007-08 $367,224
40,036 Torrens outlet Henley Beach Sth 2007-08 $152,137
16,000 Glenelg Brighton 2008-09 $172,886
27,400 Glenelg Seacliff 2008-09 $341,130
24,600 Glenelg Kingston Park 2008-09 $322,102
3,619 Glenelg Brighton Jetty 2008-09 $39,085
15,183 West Beach (Adel. Sh) West Bch Trust 2008-09 $60,732
47,915 West Beach Nth Glenelg 2008-09 $206,034
11,053 West Beach (Adel. Sh) West Bch Trust 2008-09 $44,212
127,094 Torrens outlet West Beach Trust 2008-09 $610,051
41,175 Torrens outlet Henley Beach Sth 2008-09 $156,465
4,956 West Lake Shore (E. House) Tennyson 2008-09 $16,850
16,129 West Lake Shore (E. House) Tennyson 2008-09 $54,838
39,958 Pt Malcolm Semaphore Pk 2008-09 $135,857
5,000 Semaphore Jetty Semaphore Sth 2008-09 $20,000
47,133 Semaphore Jetty Semaphore Pk 2008-09 $160,252
8,635 Glenelg Brighton Jetty 2009-10 $93,258
10,230 Glenelg Brighton 2009-10 $110,484
9,527 Glenelg Seacliff 2009-10 $118,611
12,162 Glenelg Kingston Park 2009-10 $159,322
29,935 West Beach (Adel. Sh) Nth Glenelg 2009-10 $128,720
16,954 West Beach (Adel. Sh) Nth Glenelg 2009-10 $72,902
36,012 Torrens outlet West Beach Trust 2009-10 $172,857
5,054 West Lake Shore (E. House) Tennyson 2009-10 $17,183
20,069 Semaphore Jetty Semaphore Pk 2009-10 $68,234
1,725,179 Total cubic metres $10,301,907


Since 1973, trucking contractors have carted sand on behalf of the Coast Protection Board (administered through the Department of Environment and Natural Resources (DENR)) and not the Department for Transport, Energy and Infrastructure (DTEI) or local councils. Sand carting is generally undertaken by either PD Excavations Pty Ltd or AR Contracting Services Pty Ltd.

2. Sand dredged for harbour maintenance does not directly contribute to beach replenishment as it has been deposited offshore, but the sand does move onshore. The rate at which sand moves onshore is being evaluated by a DENR survey group.

In 2007, a small amount of dredged sand was placed onshore to monitor seagrass particulate plumes (not for beach replenishment). Sand, regardless of if it is on or offshore, contributes to protection by attenuating wave energy.

3. Sand introduced to the metropolitan beach system from land based (external) sources has come from Mount Compass (28,292 cubic metres), the former Magic Mountain site, Glenelg (26,250 cubic metres) and Price, Yorke Peninsula (6,367 cubic metres) at a cost of $1,271,865.

4. Annual recurrent budget and expenditure for sand-bypassing at Glenelg and West Beach harbours is contained in Table 2.

Table 2:

Actual 2005-06 2006-07 2007-08 2008-09 2009-10
Glenelg $1,300,000 $800,000 $409,000 $835,000 $392,000
West Beach $1,700,000 $500,000 $603,000 $680,000 $394,000
Budget 2005-06 2006-07 2007-08 2008-09 2009-10
Glenelg $1,500,000 $800,000 $600,000 $600,000 $700,000
West Beach $900,000 $500,000 $600,000 $600,000 $700,000


5. Sand management projects since 2002 include:

Sand carting—this has been the predominant method of beach replenishment for the last 30 years—refer figures provided in Table 1.

Introducing coarser sand to the beach system at a cost of $1,271,865. Coarser sand is more stable and less susceptible to littoral drift and storms.

Sand bypassing (dredging) and harbour management—DENR has taken over this responsibility, which was previously carried out by DTEI. In addition, harbour management is now integrated into the beach management strategy. The cost is listed in Table 2.

Sand pumping trial—trials were conducted in 2006—2007 to test the success of various sand collection and pumping devices—the budget and actual spending for this was $1.6 million.

6. Figures for sand carting from south of the West Beach harbour to north of the harbour and from south of the Glenelg breakwater to Glenelg North are shown in Table 3 below. Sand is not carted from Glenelg North to south of the breakwater.

Table 3:

m3Compacted Sand Source Sand Destination FinancialYear Cost
1,455 Glenelg Nth Glenelg 2004-05 $13,593
6,150 West Beach (Adel. Sh) West Bch Trust 2005-06 $23,500
15,380 West Beach (Adel. Sh) West Bch Trust 2005-06 $54,100
13,480 West Beach (Adel. Sh) West Bch Trust 2006-07 $43,092
34,620 West Beach West Bch Trust 2006-07 $110,260
3,100 West Beach (Adel. Sh) West Bch Trust 2007-08 $12,990
91,806 West Beach (Adel. Sh) West Bch Trust 2007-08 $367,224
15,183 West Beach (Adel. Sh) West Bch Trust 2008-09 $60,732


7. As per the response to question 4, DTEI no longer maintains the harbours at Glenelg and West Beach but the budget was approximately $1.9 million per annum. DENR's annual recurrent budget to maintain these harbours is $1.3 million as a result of integrating harbour maintenance with beach management, including realignment of the navigation channel, thus reducing the volume of sand entering the harbours.

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