12-15 - OPCC.pdf
PDF 460 KB Posted
- Attached to
- LLELA Kayak Launch
- Solicitation number
- 26-73-C
- Issued by
- Denton County, Little Cypress CDP, Texas
About this file
This is an Opinion of Probable Cost (OPC) document prepared for the City of Lewisville, Texas for the LLELA Kayak Launch project located at 201 E Jones St. Lewisville, TX 75057, dated March 18, 2026. The scope of work encompasses construction of a new kayak launch facility, including demolition and removal of existing improvements, grading, erosion control, tree and fence removal, concrete pavement and sidewalks, ADA-compliant parking with striping, signage installation, gravel road and parking area improvements, pipe fencing and gates, launch surface installation, and related items. The project is estimated at the 60% design development phase, with quantities and specifications detailed across multiple construction categories including site work, parking areas, geopave-reinforced gravel areas, and the ramp and kayak launch components. Design and pre-construction services total $77,500.00, encompassing meetings and administrative costs, survey work, design document preparation at 30%, 60%, and 90% phases, permitting, specifications and bidding, and geotechnical reporting.
The opinion of probable cost establishes a grand total project estimate of $997,020.25, which includes construction costs of $696,606.25, contractor mobilization, bonds, overhead and profit of $139,321.25, current architect and engineering fees of $77,500.00, and a 10% owner's contingency of $83,592.75. The document notes that all quantities and prices are preliminary and subject to change based on further design development and construction price increases. Three alternates are presented for value engineering purposes: Alternate #1 proposes compacted aggregate instead of Pyramattress at a $24,840.00 deduct; Alternate #2 proposes coconut coir instead of Propex turf reinforcement mat at a $24,616.00 deduct; and Alternate #3 adds geopave and stall delineators to gravel parking areas at an additional cost of $415.00. Revised cost estimates will be prepared as the design progresses through final construction document development.
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Opinion of Probable Cost: LLELA Kayak Launch - 100% Plan Set Project Name: Lewisville, TX / LLELA Kayak Launch Project Number: 33855.1 Location: 201 E Jones St. Lewisville, TX 75057 Date: March 18, 2026
ITEM UNIT
ESTIMATED
QUANTITY
UNIT PRICE ITEM TOTAL TOTAL
1 Meetings, Travel, Administrative Costs 9,500.00$ 2 Survey 7,000.00$ 3 30%, 60%, & 90% Design Construction Documents 37,000.00$ 4 Permitting 7,500.00$ 5 Specifications & Bidding 8,500.00$ 6 Geotechnical Report 8,000.00$
DESIGN & PRE-CONSTRUCTION TOTAL $77,500.00
7 Earthwork, Clearing, Grubbing, & Top Soil (Allowance) ACR 2 5,000.00$ 10,000.00$ 8 Construction Entrance with Wash out Each 1 6,500.00$ 6,500.00$ 9 Erosion Control BMPs & Maintenance L.S. 1 45,000.00$ 45,000.00$
10 Tree & Fence Removal L.S. 1 10,000.00$ 10,000.00$ 11 Excavation & Haul Off C.Y. 67 45.00$ 3,015.00$
SITE WORK TOTAL $74,515.00
12 Heavy Duty Concrete Pavement S.F. 1,490 12.00$ 17,880.00$ 13 Sidewalks S.F. 3,385 8.00$ 27,080.00$ 14 Parking Striping- Spaces, Directional, and ADA L.S. 1 1,500.00$ 1,500.00$ 15 Informational/Rules & Regulation/Disposal Signage L.S. 1 12,100.00$ 12,100.00$ 16 Vehicular Signage Each 8 800.00$ 6,400.00$
PARKING AREA TOTAL $64,960.00
17 Gravel road with Presto Geosystems Geopave synthetic reinforcement S.F. 14,205 16.00$ 227,280.00$ 18 Gravel road S.F. 14,920 8.00$ 119,360.00$ 19 Concrete Wheel Stops Each 13 125.00$ 1,625.00$ 20 Porta-potty base construction S.F. 536 8.00$ 4,288.00$ 21 Pipe fencing: Install/ welded, paint applied L.F. 795 85.00$ 67,575.00$ 22 Sentinel Single In-Ground manual Swing Barrier Gate - 10ft Arm Each 2 2,000.00$ 4,000.00$ 23 Stone traffic blocks Each 3 500.00$ 1,500.00$
GEOPAVE REINFORCED GRAVEL AREAS TOTAL $425,628.00
24 Concrete Edge Ribbon L.F. 260 35.00$ 9,100.00$ 25 PVC Grip Mat S.F. 1,280 12.00$ 15,360.00$ 26 Hydroturf Z Launch Zone S.F. 2,420 14.00$ 33,880.00$ 27 FlexTerra - Native Seed Mix 199 S.Y. 2,435 1.65$ 4,017.75$ 28 FlexTerra HP-FGM Erosion Control Hydromulch S.Y. 2,435 1.50$ 3,652.50$ 29 Propex Synthetic Wrapped Gabion (Pyramattress) S.Y. 180 210.00$ 37,800.00$ 30 Propex Turf Reinforcement Mat - Lower Ramp Area Only S.F. 3,077 9.00$ 27,693.00$
RAMP & KAYAK LAUNCH TOTAL $131,503.25
31 SUB-TOTAL: $696,606.25
32 Contractor's Mobilization, Bonds, Overhead & Profit: 139,321.25$ 33 SUB-TOTAL including Mobilization, Bonds, Overhead, & Profit: 835,927.50$ 34 Current A & E Fees: 77,500.00$ 35 10% Owner's Contingency: 83,592.75$
36 GRAND TOTAL: 997,020.25$
ALTERNATES OR VALUE ENGINEERING
37 Alternate #1- Compacted aggregate instead of Pyramattress S.Y. 180 72.00$ 12,960.00$ (24,840.00)$ 38 Alternate #2- Coconut Coir instead of Propex TRM S.F. 3,077 1.00$ 3,077.00$ (24,616.00)$ 38 Alternate #3- Add Geopave & Stall Delineators to Gravel Parking Areas LS 1 415.00$ 415.00$ 415.00$
ALTERNATES DEDUCT TOTAL: (49,456.00)$
* THIS IS A DESIGN ESTIMATE BASED ON CLIENT APPROVED 60% SET
All quantities and prices shown are preliminary and are subject to change based on further design development and construction price increases. Revised cost estimates will be prepared as design moves through Construction Document development.
Preliminary Cost Estimate
DESIGN & PRE-CONSTRUCTION
SITE WORK
PARKING AREAS
GEOPAVE REINFORCED GRAVEL AREAS
RAMP & KAYAK LAUNCH
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