BID
ITEM
DESCRIPTION QTY UNIT UNIT RATE SUBTOTAL
1 Mobilization/Demobilization (5% of Construction) 1 LS $ 650,000 $ 650,000 2 Traffic Control 1 LS $185,320.00 $ 185,320
3 Sheeting, Shoring, and Bracing 1 LS $ 80,055.00 $ 80,055 4 Water Pollution Control 1 LS $ 44,475.00 $ 44,475
5 Sewer Bypassing and Flow Control 1 LS $102,292.50 $ 102,293 6 Standard 48‐inch Manhole 68 EA $12,000.00 $ 816,000
7 Standard 60‐inch Manhole 8 EA $22,000.00 $ 176,000
8 Shallow Manhole 10 EA $10,000.00 $ 100,000
9 Manhole Outside Drop 1 EA $ 4,000.00 $ 4,000
10 8‐inch Sanitary Sewer (Open Cut) 5,532 LF $ 360.00 $ 1,991,520 11 8‐inch Sanitary Sewer (Fault Zone ‐ Site S25) 415 LF $ 540.00 $ 224,100 12 8‐inch Sanitary Sewer (Pipe Bursting) 417 LF $ 240.00 $ 100,080 13 10‐inch Sanitary Sewer (Open Cut) 5,731 LF $ 450.00 $ 2,578,950 14 12‐inch Sanitary Sewer (Open Cut) 4,522 LF $ 540.00 $ 2,441,880 15 12‐inch Sanitary Sewer (Pipe Bursting) 1,919 LF $ 360.00 $ 690,840 16 15‐inch Sanitary Sewer (Open Cut) 1,590 LF $ 675.00 $ 1,073,250 17 15‐inch or 16‐inch Sanitary Sewer (Pipe Bursting) 807 LF $ 450.00 $ 363,150 18 Trenchless 24‐inch Steel Casing and Sewer (Site S15) 1 LS $325,000.00 $ 325,000 19 Storm Channel Improvements (Site S15) 1 LS $100,000.00 $ 100,000 20 Replace Sewer by Pipe Reaming (Site S15) 688 LF $ 360.00 $ 247,680 21 Trench Dam Modification (Site S29) 3 EA $ 5,000.00 $ 15,000 22 Sewer Spot Repair (10‐foot length) 14 EA $ 7,500.00 $ 105,000 23 CIPP Lining of 8‐inch Sanitary Sewer 567 LF $ 160.00 $ 90,720 24 Concrete Encasement 1,229 LF $ 60.00 $ 73,740
25 New Sewer Lateral Connection (w/5 feet new lateral) 443 EA $ 1,200.00 $ 531,600 26 Additional Sewer Lateral 515 LF $ 150.00 $ 77,250
27 Lateral Cleanout 13 EA $ 1,000.00 $ 13,000
28 Abandon Existing Sanitary Sewer (4" or 6") 915 LF $ 30.00 $ 27,450 29 Abandon Existing Sanitary Sewer (8") 2,131 LF $ 40.00 $ 85,240 30 Abandon Existing Sanitary Sewer (10") 309 LF $ 50.00 $ 15,450 31 Rehabilitate Existing Manhole 28 EA $ 8,000 $ 224,000 32 Manhole Lining 10 EA $ 4,500 $ 45,000
City of Hayward Sewer Improvement Project
Engineer's Opinion of Probable Construction Cost ‐ 90% Design Level HydroScience Engineers
March 2022
All Projects
ATTACHMENT IV
33 Reconstruct Retaining Wall and Access Road (S29) 1 LS $ 50,000 $ 50,000 34 Replace 12" Storm Drain Crossing (S20) 1 LS $ 20,000 $ 20,000 Construction Subtotal $ 13,668,043
Bid Contingency at 20% 20% $ 2,733,000
Overall Total $ 16,401,043