PERMFILE49907

• Permit No: M2000016
• IBM Index Class Name: Permit File
• Doc Date: 5/31/2000
• Doc Name: ADEQUACY RESPONSE DTD 5-24-00 MOBILE PRE MIX CONCRETE INC RIVERBEND PIT FN M-00-016
• From: DMG
• To: GREGG SQUIRE
• Media Type: D
• Archive: No

Attachment -Revised Exhibit L, Reclamation Cost Estimate
The maximum area of disturbance was based on the point in time when it would be the most
expensive to reclaim the site. This point occurs during the backfilling for 3:1 slopes in Mining
Cell 1 and 2. Here the dewatering trench will be at its maximum length. The access road and
processing area will also contribute to the site disturbance. There will be shoreline under
reclamation at the south end of the property. Please refer to Table D-1 for a listing of disturbed
areas, which total 61 acres. This estimate will follow the same order as the Table D-1.
A. Backfilling Sediment Basin
1. Backfill (2' depth)
2. Topsoil (6" depth)
3. Scarify
4. Seed
5. Reseed
Qty Units Unit Cost Cost
12,900 CY $ 1,25 $1 6,125.00
3,200 CY $ 1.25 $ 4,000.00
4 AC $ 100.00 $ 400.00
4 AC $ 750.00 $ 3,000.00
1 AC $ 750,00 $ 750.00
B. Active Mining.4rea (/S acres)
1. Liner -install, repair, or replace 20%
2. Pit Run Material to Armor Liner (2' depth)
Stripped Overburden and Topsoil (3.5 acres
within 1 S acres, the area ahead of mining)
3. Backfill (4' depth)
4. Topsoil (6" depth)
5. Scarify
6. Seed
7. Reseed
C. Topsoil and overburden stockpiles
1. Scarify
2. Seed
3. Reseed
D. Dewatering trench(30' depth, 2' width)
1. Backfill (30' depth)
2. Topsoil (6" depth)
3. Scarify
4. Seed
5. Reseed
Qty Units Unit Cost Cost
3,250 LF $ 77.90 $253,200.00
25,000 CY $ 7.50 $187,500.00
22,586 CY $ 1.25 $28,232.50
2,800 CY $ 1.25 $ 3,500.00
3.5 AC $100.00 $ 350.00
3.5 AC $750.00 $ 2,625.00
1 AC $750.00 $ 750.00
Qty Units Unit Cost Cost
3 AC $100.00 $ 300.00
3 AC $750.00 $ 2,250.00
1 AC $750.00 $ 750.00
Qty Units Unit Cost Cost
8,666 CY $ 1.25 $1 0,832.50
145 CY $ 1.25 $ 181.25
3 AC $100.00 $ 300.00
3 AC $750.00 $ 2,250.00
l AC $750.00 $ 750.00
L-I