Contractor bid averages for installation of three 29,000 gallon underground storage tanks
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BASE BID ITEM ESTIMATED QUANTITY UNIT UNIT PRICE AVERAGE TOTAL AVERAGE BID
Part 1 - General and Erosion Control
MOBILIZATION 1 LS 💲23,340 💲23,340
SEDIMENT CONTROL LOG -- INSTALL, MAINTENANCE AND REMOVAL 267 LF 💲5 💲1,335
TEMPORARY FENCE -- INSTALL AND REMOVAL 160 LF 💲8 💲1,280
STABILIZED CONSTRUCTION EXIT -- INSTALL, MAINTENANCE AND REMOVAL 1 LS 💲2,410 💲2,410
EROSION CONTROL BLANKET 424 SY $4 $1,696
STORM DRAIN INLET PROTECTION -- INSTALL, MAINTENANCE AND REMOVAL 2 EA 💲387 💲774
DUST CONTROL 10 HRS 💲121 💲1,210
Total Part 1 💲32,045
Part 2 - Removals
REMOVE EXISTING SEDIMENT CONTROL LOG OR SILT FENCE Total Part 2 268 LF 💲4 💲1,072
Total Part 2 💲1,072
Part 3 - Grading
COMMON EXCAVATION -- INCLUDES TANK TRENCH EXCAVATION AND FILL TO PROPOSED GRADE 1955 CY $9 $9
REMOVAL OF EXCAVATED MATERIAL 1389 CY $10 $13,890
AGGREGATE BACKFILL 1009 CY $41 $41,369
Total Part 3 💲72,854
Part 4 – Underground Storage Tank Components
RAINWATER HARVESTING TANK (120" DIA. X 50-FEET) 3 EA 💲77,639 💲232,917
CONSTRUCT DRAINAGE STRUCTURE 6 EA 💲1,153 💲6,918
CONCRETE, REINFORCED COLLAR (RISER MANHOLE CAP) 6 EA 💲1,085 💲6,510
CONCRETE, REINFORCED COLLAR (AT RISER CONNECTION TO TANK) 6 EA 💲1,248 💲7,488
INSTALL CASTING 6 EA 💲1,221 💲7,326
18" HDPE PIPE 115 LF 💲73 💲8,395
SOIL DENSITY COMPACTION TESTING 12 EA 💲430 💲5,160
Total Part 4 💲274,714
Part 5 – Site Restoration
RAPID STABILIZATION 0.42 AC 💲3,173 💲1,333
PERMANENT SEEDING 0.42 AC 💲6,336 💲2,661
TURF ESTABLISHMENT 1 EA 💲2,500 💲2,500
Total Part 5 💲6,494
Total Bid 💲386,590
PRICE PER TANK (3 – 29,000 gallon tanks) 💲129,060
PRICE PER TANK PER YEAR OVER 25 YEAR 💲5,162
PRICE PER GALLON 💲1.46
PRICE PER GALLON PER YEAR OVER 25 YEARS 💲0.06