4-EXHIBIT B- Unit Cost Schedule Amended 2025.xls

XLS spreadsheet 951 KB Posted

Attached to
Stormwater Maintenance and Repair
Solicitation number
2025-30
Issued by
Barnwell County, South Carolina

About this file

The document is an Exhibit B Unit Cost Schedule for a 2025-2030 Stormwater Maintenance & Repair Services contract, specifically focused on South Carolina Department of Transportation (SCDOT) specifications. The unit cost schedule provides an itemized list of potential job order items with estimated quantities for stormwater infrastructure work, including removal and disposal of existing structures like catch basins, drop inlets, manholes, and pavement. The document outlines detailed specifications for pipe culvert installations, structure bedding, sediment controls, and establishes guidelines for job order pricing, with provisions for negotiating costs for items not explicitly listed or for installations deeper than 6 feet.

The pricing structure indicates a maximum 0.0% increase, with unit prices serving as the basis for contract agreement. The schedule references SCDOT Standard Specifications for Highway Construction and includes supplemental technical specifications for pipe culverts, inlet structure filters, and stormwater management. Notably, the document specifies that mobilization costs have a minimum of $500 or 5% of the job order, negotiable up to 15%. The unit cost schedule is designed to provide a comprehensive framework for competitive proposal pricing, with flexibility for specific job order requirements and depth-based cost adjustments. All work is expected to comply with current SCDOT specifications and the SC DES Storm Water Management BMP Handbook.

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Unit Cost Schedule 2025 KDU

EXHIBIT B - UNIT COST SCHEDULE
RFP 2025-30
STORMWATER MAINTENANCE & REPAIR SERVICESINCREASE COUNT93
The following is an itemized, potential list of items that may be used in this Contract. The estimated quantities for these items are being provided to obtain competitive proposal pricing. The listed quantities are approximate estimates of a "typical" Job Order quantity, but actual quantities may vary and will be determined for each specific Job Order. The unit prices given on this document, along with the specified multipliers, shall become the basis for, and included in, the Contract agreement.MAX0.0%
Note: Unless noted otherwise on the plans or in the Special Provisions, the latest edition of the SCDOT Standard Specifications for Highway Construction shall be used as a guide for all materials and wormanship under this Contract. For reinforced concrete pipe (RCP) and high density polyethylene pipe (HDPE), the default specification is SCDOT Supplemental Technical Specification for Permanent Pipe Culverts, SC-M-714 (08/09). All pipe culvert unit costs shall include six inches of #57 Stone for pipe bedding, installation of new pipe, all joints wrapped sufficiently with filter fabric, proper connection to new structures, and proper backfill compaction in 6-inch lifts to the subgrade. All structure unit costs shall include six inches of #57 Stone for bedding. For all Inlet Structure Filters the default specification is SCDOT Supplemental Technical Specification for Inlet Structure Filters, SC-M-815-8 (04-11). Sediment Controls shall follow all current SCDOT Specifications and the SC DES Storm Water Management BMP Handbook. All items listed in the Unit Cost Schedule involving materials for or installation of storm drain systems will be for installation depths less than 6 feet; 6' deep or greater will be negotiated per Job Order. Any drainage maintenance activity not specifically listed in the Unit Cost Schedule will be negotiated per Job Order.MODE0.0%
LineItem No.SCDOT Specification or Special Provision No.SCDOT Std. Dwg. No. or Manufacter Std. No.Item Description - Highlighted if Minimums ApplyEst. Qty.UnitUnit PriceTotalsItem No.ADDENDUM 2 UNIT COSTINCREASE% INCREASE
11000SP-1Final Job Order Cost Mobilization ($500 or 5% minimum, negotiable up to 15%)1LSNEGNEG1000NEG$ - 00.0%
2DEMOLITION
3200020210XXRemoval and Disposal of Existing Catch Basin, Drop Inlet, Manhole, Junction Box1EA$ - 02000$ 795.00$ (795.00)-100.0%
420012023000Removal and Disposal of Existing Pavement (Including Saw Cut), if SY<10, Add 10%10SY$ - 02001$ 32.00$ (32.00)-100.0%
520022024100Removal and Disposal of Existing Curb20LF$ - 02002$ 13.00$ (13.00)-100.0%
620032025000Removal and Disposal of Existing Asphalt Pavement (Including Saw Cut), if SY<20, Add 10%20SY$ - 02003$ 32.00$ (32.00)-100.0%
62004SP-XXRemoval and Disposal of Existing Storm Pipe (Up to 24" Diameter Pipe), Any Material30LF$ - 02003$ 32.00$ (32.00)-100.0%
62005SP-XXRemoval and Disposal of Existing Storm Pipe (30" - 48" Diameter Pipe), Any Material30LF$ - 02003$ 32.00$ (32.00)-100.0%
7EARTHWORK
830002031000Unclassified Excavation50CY$ - 03002$ 21.00$ (21.00)-100.0%
930012031000Watercourse and Drainage Ditch Excavation100CY$ - 03003$ 21.00$ (21.00)-100.0%
1030022033000Borrow Excavation30CY$ - 03004$ 36.00$ (36.00)-100.0%
1130032034000203-105-00Muck Excavation25CY$ - 03005$ 28.00$ (28.00)-100.0%
1230042052000No. 57 Stone for Backfill or Additional Bedding5TON$ - 03006$ 52.52$ (52.52)-100.0%
1330052081001Fine Grading50SY$ - 03007$ 15.00$ (15.00)-100.0%
1430062103000SC-M-210Flowable Fill Material (With Vibratory Process to Reach Voids)15CY$ - 03008$ 126.25$ (126.25)-100.0%
15BASES AND PAVEMENTS
164000305010XGraded Aggregate Base Course (4.5" Uniform) (Macadam or Limestone)- Pathway, if SY<10, Add 10%10SY$ - 04000$ 23.23$ (23.23)-100.0%
1740013050106Graded Aggregate Base Course (6" Uniform) (Macadam or Limestone), if SY<10, Add 10%20SY$ - 04001$ 26.26$ (26.26)-100.0%
1840024013200Milling Existing Asphalt Pavement (2")15SY$ - 04002$ 36.00$ (36.00)-100.0%
1940034013990Milling Existing Asphalt Pavement (Variable)15SY$ - 04003$ 30.00$ (30.00)-100.0%
2040044030340403-105-00HMA Surface Course Type C (2 Ton Min.) (< 5 Tons)3TON$ - 04004$ 315.00$ (315.00)-100.0%
21TRAFFIC CONTROL / PAVEMENT MARKINGS$ - 00.0%
2250001071000610-XXXTraffic Control1LSNEGNEG5000NEG$ - 00.0%
2350016041150604-005-00Barricade – Type II2EA$ - 05002$ 65.00$ (65.00)-100.0%
2450026041200604-005-00Barricade – Type III2EA$ - 05003$ 75.00$ (75.00)-100.0%
2550036041300Traffic Control Barrel 36" Height with Reflective Tape15EA$ - 05004$ 75.00$ (75.00)-100.0%
26CORRUGATED HIGH DENISTY POLYETHYLENE PIPE CULVERT (HDPE)
2760007141793SC-M-714 (08/09)12" HDPE Pipe, if LF<20, Add 10%30LF$ - 06000$ 39.39$ (39.39)-100.0%
2860017141794SC-M-714 (08/09)15" HDPE Pipe, if LF<20, Add 10%30LF$ - 06001$ 42.42$ (42.42)-100.0%
2960027141796SC-M-714 (08/09)18" HDPE Pipe, if LF<20, Add 10%30LF$ - 06002$ 44.44$ (44.44)-100.0%
3060037141798SC-M-714 (08/09)24" HDPE Pipe, if LF<20, Add 10%30LF$ - 06003$ 53.53$ (53.53)-100.0%
316004714179ASC-M-714 (08/09)30" HDPE Pipe, if LF<20, Add 10%30LF$ - 06004$ 63.63$ (63.63)-100.0%
326005714179CSC-M-714 (08/09)36" HDPE Pipe, if LF<20, Add 10%30LF$ - 06005$ 72.72$ (72.72)-100.0%87.52
336006SC-M-714 (08/09)42" HDPE Pipe, if LF<20, Add 10%30LF$ - 0added for size119.4900
336007SC-M-714 (08/09)48" HDPE Pipe, if LF<20, Add 10%30LF$ - 0added for size119.491.36528793420
34CORRUGATED EXTERIOR SMOOTH INTERIOR HIGH PERFORMANCE POLYPROPYLENE PIPE CULVERT (HP STORM - PP)
35700012" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
36700115" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
37700218" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
38700324" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
39700430" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
40700536" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
41700642" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
42700748" HP STORM PP Pipe, if LF<20, Add 10%30LF$ - 0added for new product
42REINFORCED CONCRETE PIPE CULVERT (RCP)
4380007141112SC-M-714 (08/09)15" RCP, Class III, if LF<20, Add 10%30LF$ - 07000$ 55.55$ (55.55)-100.0%
4480017141113SC-M-714 (08/09)18" RCP, Class III, if LF<20, Add 10%30LF$ - 07001$ 58.58$ (58.58)-100.0%
4580027141114SC-M-714 (08/09)24" RCP, Class III, if LF<20, Add 10%30LF$ - 07002$ 67.67$ (67.67)-100.0%
4680037141115SC-M-714 (08/09)30" RCP, Class III, if LF<20, Add 10%30LF$ - 0
4780047141116SC-M-714 (08/09)36" RCP, Class III, if LF<20, Add 10%30LF$ - 07003$ 93.93$ (93.93)-100.0%
4880057141117?SC-M-714 (08/09)42" RCP, Class III, if LF<20, Add 10%30LF$ - 07004$ 127.26$ (127.26)-100.0%
4880057141118SC-M-714 (08/09)48" RCP, Class III, if LF<20, Add 10%30LF$ - 07004$ 127.26$ (127.26)-100.0%
498006714XXXXSC-M-714 (08/09)12" x 18" x 8' Elliptical RCP, Class III, if LF<20, Add 10%30LF$ - 0
5080077141112SC-M-714 (08/09)15" RCP, Class IV, if LF<20, Add 10%30LF$ - 0STRUCTURES$ - 00.0%
5180087141113SC-M-714 (08/09)18" RCP, Class IV, if LF<20, Add 10%30LF$ - 08000$ 707.00$ (707.00)-100.0%
5280097141114SC-M-714 (08/09)24" RCP, Class IV, if LF<20, Add 10%30LF$ - 08001$ 782.75$ (782.75)-100.0%
538010714XXXXSC-M-714 (08/09)12" x 18" x 8' Elliptical RCP, Class IV, if LF<20, Add 10%30LF$ - 08002$ 883.75$ (883.75)-100.0%
5480117141111SC-M-714 (08/09)12" RCP, Class V, if LF<20, Add 10%30LF$ - 0
5580127141112SC-M-714 (08/09)15" RCP, Class V, if LF<20, Add 10%30LF$ - 08004$ 3,888.50$ (3,888.50)-100.0%
5680137141113SC-M-714 (08/09)18" RCP, Class V, if LF<20, Add 10%30LF$ - 08005$ 3,989.50$ (3,989.50)-100.0%
5780147141114SC-M-714 (08/09)24" RCP, Class V, if LF<20, Add 10%30LF$ - 08006$ 4,040.00$ (4,040.00)-100.0%
588015714XXXXSC-M-714 (08/09)12" x 18" x 8' Elliptical RCP, Class V, if LF<20, Add 10%30LF$ - 08007$ 4,090.50$ (4,090.50)-100.0%
59STRUCTURES
6090007191005719-001-01Catch Basin (Type 1) (4' x 4' Box)1EA$ - 08003$ 4,242.00$ (4,242.00)-100.0%
6190017191205719-009-01Catch Basin (Type 9) (3' x 4' Box)1EA$ - 08004$ 3,888.50$ (3,888.50)-100.0%
6290027191605719-016-01Catch Basin (Type 16)1EA$ - 08005$ 3,989.50$ (3,989.50)-100.0%
6390037192011719-105-01Drop Inlet (24" x 24") (4' x 4' Box)1EA$ - 08006$ 4,040.00$ (4,040.00)-100.0%
64900471920XX719-105-01Drop Inlet (24" x 24") (3' x 4' Box)1EA$ - 0
65900571920XX719-105-01Drop Inlet (24" x 24") (3' x 3' Box)1EA$ - 0
66900671920XX719-105-01Drop Inlet (24" x 24") (2' x 3' Box)1EA$ - 0
67900771920XX719-105-01Drop Inlet (24" x 24") (2' x 2' Box)1EA$ - 0
68900871920XX719-110-01Drop Inlet (24" x 36") (4' x 4' Box)1EA$ - 08007$ 4,090.50$ (4,090.50)-100.0%
6990097192105719-505-01Manhole1EA$ - 08008$ 3,181.50$ (3,181.50)-100.0%
70901071922XX719-310-004' x 4' Junction Box1EA$ - 08009$ 2,878.50$ (2,878.50)-100.0%
71901171922XX719-310-003' x 4' Junction Box1EA$ - 0
72901271922XX719-310-003' x 3' Junction Box1EA$ - 0
73901371922XX719-310-002' x 3' Junction Box1EA$ - 0
74901471922XX719-310-002' x 2' Junction Box1EA$ - 0
7590157196000719-315-00Extra Depth of Box1LF$ - 08011$ 505.00$ (505.00)-100.0%
7690167197052719-705-01Concrete Collar (Up to 24" Diameter Pipe)1EA$ - 08012$ 858.50$ (858.50)-100.0%
7690177197052719-705-01Concrete Collar (30" - 48" Diameter Pipe)1EA$ - 08012$ 858.50$ (858.50)-100.0%
78901812" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
79901915" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
80902018" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
81902124" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
82902230" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
83902336" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
83902442" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
84902548" Marmac PolySeal Pipe Coupler, or Equivalent2EA$ - 0
859025SP-2Neenah R3433*24" x 24" Grate and Frame (*Neenah or Equivalent)1EA$ - 08014$ 600.95$ (600.95)-100.0%
869026SP-2Neenah R4343*24" x 24" Grate - Ditch Grate "Crown" Type and Frame (*Neenah or Equivalent)1EA$ - 08015$ 787.80$ (787.80)-100.0%
879027SP-2Neenah R4345*24" x 24" Grate - Beehive and Frame (*Neenah or Equivalent)1EA$ - 08016$ 1,111.00$ (1,111.00)-100.0%
889028SP-2Neenah R3455C*24" x 36" Grate and Frame (*Neenah or Equivalent)1EA$ - 08017$ 646.40$ (646.40)-100.0%
899029SP-2Neeenah R1555*Manhole Frame and Lid (*Neenah or Equivalent)1EA$ - 08018$ 570.65$ (570.65)-100.0%
899030SP-2Connect Pipe to Existing Structure (12" - 24" Diameter Pipe)2LS$ - 08018$ 570.65$ (570.65)-100.0%
899030SP-2Connect Pipe to Existing Structure (30" - 48" Diameter Pipe)2LS$ - 08018$ 570.65$ (570.65)-100.0%
90CURB, GUTTER, SIDEWALKS, AND DRIVEWAYS
91100007203110720-105-01Concrete Curb and Gutter (1'-6") Vertical Face20LF$ - 09000$ 39.00$ (39.00)-100.0%
92100017203130720-105-01Concrete Curb and Gutter (1'-6") Ogee20LF$ - 09001$ 40.00$ (40.00)-100.0%
93100027203210720-105-01Concrete Curb and Gutter (2'-0") Vertical Face20LF$ - 09002$ 46.00$ (46.00)-100.0%
94100037203230720-105-01Concrete Curb and Gutter (2'-0") Ogee20LF$ - 09003$ 48.00$ (48.00)-100.0%
95100047204100720-000Concrete Sidewalk (4” Uniform)10SY$ - 09004$ 86.00$ (86.00)-100.0%
96100057205000720-000Concrete Driveway (6" Uniform)25SY$ - 09005$ 95.00$ (95.00)-100.0%
97EROSION & SEDIMENT CONTROL
98110008041025804-000Riprap (Class B)5CY$ - 010000$ 212.10$ (212.10)-100.0%
991100180481XX804-305-02Geotextile for Erosion Control Under Riprap (Class 2 - Type C)5SY$ - 010001$ 4.00$ (4.00)-100.0%
100110028101000Seeding (Mulched) - Hydroseeding200SY$ - 010003$ 6.00$ (6.00)-100.0%reduced because original contract they included prep for the soil to cover costs, now we add labor item for hand raking
101110038102100Seeding (Unmulched) - Handseeding50SY$ - 010002$ 12.00$ (12.00)-100.0%reduced because original contract they included prep for the soil to cover costs, now we add labor item for hand raking
10211004Pine Straw (3" Thick Applied)100SY$ - 0
103110058151150SC-M-815-9Temporary Erosion Control Blanket (ECB)50SY$ - 0
104110068151151SC-M-815-9Turf Reinforcement Matting (TRM) Type 150SY$ - 0
105110078151152SC-M-815-9Turf Reinforcement Matting (TRM) Type 250SY$ - 0
106110088151153SC-M-815-9Turf Reinforcement Matting (TRM) Type 350SY$ - 0
107110098152004815-006-00Inlet Structure Filter - Type F (Weighted Inlet Tubes)20LF$ - 010004$ 11.00$ (11.00)-100.0%
108110108152007815-205-00Sediment Tube20LF$ - 010005$ 10.00$ (10.00)-100.0%
109110118153000815-605-00Silt Fence (Including Removal of Silt)100LF$ - 010006$ 4.00$ (4.00)-100.0%
110110128156219815-001-00Inlet Structure Filter - Type A (Sediment Tube/Filter Fabric Inlet Protection)20LF$ - 010007$ 10.00$ (10.00)-100.0%
111110138156220Inlet Structure Filter - Type G (Suspended Internal Inlet Filters)2EA$ - 0
1121101481533XX815-805-00Floating Turbidity Curtain, Heavy Duty, 5 Feet Deep, (50 LF increments)50LF$ - 0
113LANDSCAPING
11412000SP-3Tree Protection Fence50LF$ - 011000$ 4.00$ (4.00)-100.0%
11512001SP-4Selective Tree Removal, 6" - 12" Diameter1EA$ - 0
11612002SP-4Selective Tree Removal, 13" - 24" Diameter1EA$ - 0
11712003SP-4Selective Tree Removal, 25" - 36" Diameter1EA$ - 0
11812004SP-4Selective Tree Removal, Multi-Stem Tree Greater than 12" Equivalent Diameter (Wax Myrtles)1EA$ - 0
11912005SP-5Vegetation / Selective Undergrowth Removal and Disposal, Work Areas with Workshelf/Established Access (Bush Hog, Skid Steer with Grinder, or Similar)200SY$ - 0
12012006SP-5Vegetation / Selective Undergrowth Removal and Disposal, Work Areas with Limited Access200SY$ - 0
12112007SP-5Vegetation / Selective Undergrowth Removal and Disposal, Work Areas Requiring Specialized Access100LF$ - 0
12212008SP-6Trash / Debris Removal & Disposal Normal1CY$ - 011000$ 4.00$ (4.00)-100.0%
12312009SP-6Trash / Debris Removal & Disposal Large1LSNEGNEG11001$ 750.00$ (750.00)-100.0%
124HOURLY LABOR RATES
12513000SP-7Foreman & Pickup, 4 Hr. Minimum20HR$ - 012000$ 65.00$ (65.00)-100.0%
12613001SP-7Truck Driver, 4 Hr. Minimum20HR$ - 012001$ 45.00$ (45.00)-100.0%
12713002SP-7Heavy Equipment Operator, 4 Hr. Minimum40HR$ - 012002$ 45.00$ (45.00)-100.0%
12813003SP-7Laborer, 4 Hr. Minimum20HR$ - 012003$ 35.00$ (35.00)-100.0%
12913004SP-7Flagger, 4 Hr. Minimum20HR$ - 012004$ 35.00$ (35.00)-100.0%
130EQUIPMENT
13114000SP-8Large Excavator (55,001-70,000 lbs Operating Weight, JD 345, or Comparable), 8 Hr. Minimum30HR$ - 013002$ 145.00$ (145.00)-100.0%
13214001SP-8Mid-Size Excavator (18,001-55,000 lbs Operating Weight, JD 210, or Comparable), 8 Hr. Minimum30HR$ - 013001$ 125.00$ (125.00)-100.0%
13314002SP-8Mini Excavator (Up to 18,000 lbs Operating Weight, JD 75, or Comparable), 8 Hr. Minimum30HR$ - 013009$ 50.00$ (50.00)-100.0%
13414003SP-8Backhoe / Loader (CAT 426, or Comparable), 8 Hr. Minimum30HR$ - 013003$ 75.00$ (75.00)-100.0%
13514004SP-8Rubber Tire Loader (CAT 930, or Comparable), 8 Hr. Minimum30HR$ - 013004$ 100.00$ (100.00)-100.0%
13614005SP-8Skid Steer Loader (Operating Capacity up to 3500 lbs, or Comparable), 8 Hr. Minimum30HR$ - 013005$ 50.00$ (50.00)-100.0%
13714006SP-8Dump Truck (10-15 CY Capacity), 8 Hr. Minimum20HR$ - 013006$ 85.00$ (85.00)-100.0%
13814007SP-8Dump Trailer (Capacity up to 9 CY), 8 Hr. Minimum20HR$ - 013007$ 110.00$ (110.00)-100.0%
13914008SP-8Gradall with 2.0 CY Ditch Bucket, 8 Hr. Minimum30HR$ - 013011$ 125.00$ (125.00)-100.0%
14014009SP-9Road Plate (Minimum 1 Week)1WK$ - 013018$ 550.00$ (550.00)-100.0%
14114010SP-10Incidental Pumping (Mud Hog/Trash Pump)5DAY$ - 013015$ 90.00$ (90.00)-100.0%
14214011SP-11Surface Water Pumping (Dewatering) (Trailer Mounted or Skid Pump)1DAY$ - 013016$ 125.00$ (125.00)-100.0%
14314012SP-12Well Point Setup1EA$ - 0
14414013SP-13Groundwater Pumping (Well Point Pump or Quiet Pump)7DAY$ - 013019$ 750.00$ (750.00)-100.0%
14514014SP-14Temporary Pipe Plug (Up to 36" Diameter)2EA$ - 013017$ 1,200.00$ (1,200.00)-100.0%
14614015SP-14Temporary Pipe Plug (42" to 60" Diameter)2EA$ - 0
14714016SP-15Swamp/Digger/Cable Mats (Minimum 1 Week)2WK$ - 0
Total$ - 0
The labor rates are all inclusive without limitation, to include wage benefits, vehicle, fuel, tools, mobilization, demobilization, supervision,
insurance, all licenses, permits, overhead and profit and all other requirements necessary for the commencement, performance and completion
of the considered in this RFP.
Contractor Name: ____________________________________
Name of Person Completing form:_________________________________
Title of Person Completing Form_____________________________________
Date:________________________________________________________

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