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Home My WebLink AboutCONCRETE STREET PROGRAM STUDY (2011)City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 1 - Table of Contents Pg. # Executive Summary……………………………………………………………………………...3 Authorization……………………………………………………………………………..............4 Project Overview……………………………………………………………………………........4 Drainage Design………………………………………………………………………………….4 Description………………………………………………………………………….......................5 Existing Condition ……………………………………………………………………..................5 Proposed Condition…………………………..................................................................................6 Pavement Improvements/Pavement Area Reduction………………………………………….8 Existing Rights-of-Way ...................................................................................................................8 Existing Roadway Sections…………………………………………………………………..........8 Existing On-street Parking…………………………………………………………………….......8 Existing Pavement Area…………………………...........................................................................9 Findings and Recommendations………………………………………………………………...9 Proposed Rights-of-Way…………………………………………………………………………..9 Proposed Roadway Sections ………………………………………………………………….......9 Potential Savings …………………………………………………………...................................10 Proposed On-Street Parking………………………………………………………………….......10 Proposed Pavement Area Reduction ………………………………………………………….....11 Overland Flow Conveyance …………………………………………………………..................12 Construction Cost………………………………………………………………………………12 Construction Phasing…………………………………………………………………………..14 Approach……………………………………………………………………………....................14 Phase l……………………………………………………………………………………………14 Phase 2 ………………………………………………..................................................................15 Phase 3……………………………………………………….......................................................15 Phase 4…………………………………………………………………………………………...15 Phase 5 …………………………………………………………………………………………..15 Phase 6 ………………………………………………………………………………………......16 City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 2 - Phase 7 …………………………………………………………………………………………..16 Phase 8 ……………………………………………………..........................................................16 Phase 9 …………………………………………………………………………………………..16 Phase 10 ……………………………………………………………............................................17 Phase 11 and Greater ………………………………………………………...………………….17 Conclusion…………………………………………………………………………………........18 Exhibits Vicinity Map……………………………………………………………………………...Exhibit 1 Project Area Map…………………………………………………….. ………………….Exhibit 2 Flood Insurance Rate Map………………………………………….. …………………...Exhibit 3 Existing Condition Drainage Area Map…………………………………………………. Exhibit 4 Proposed Condition Drainage Area Map ……………………. ………………………….Exhibit 5 Existing Concrete Street Plan……………………………………………………………. Exhibit 6 Land Use Map and Parking Provisions…………………………………… ……………..Exhibit 7 Proposed Concrete Street Paving Plan…………………………………………………. ..Exhibit 8 Pavement Reduction Plan, Option “A”, One-way…………………………………….….Exhibit 9 Pavement Reduction Plan, Option “B”, Mid-Block Bollards……………………….…..Exhibit 10 Proposed Overland Relief Directional Flow Map ………………….…………………...Exhibit 11 Phasing Plan, Phases 1 to 10 ……………………….………………………...................Exhibit 12 Phasing Plan, Phases 11 to End………………………………………………………….Exhibit 13 Proposed 3rd Street Trunk Sewer and Potential Conflicts…………………………..…...Exhibit 14 Appendix A – Project Cost Estimates Cost Estimate 1 – Overall Construction, Engineering, Surveying, and Contingencies….Pg. 1 of 1 Cost Estimate 2 – Overall Construction and Phases 1 to 4…………………………...….Pg. 1 of 2 Cost Estimate 2 – Overall Construction and Phases 5 to 10………………………...…...Pg. 2 of 2 Cost Estimate 3 – Overall Construction and Pavement Reduction Options…………......Pg. 1 of 1 Appendix B – Drivable Grass Brochure City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 3 - EXECUTIVE SUMMARY The City of La Porte (City) awarded Cobb Fendley Associates, Inc. (CobbFendley) the contract to perform this Concrete Street Program Study (Study) on December 13, 2010. Its purpose was to determine the engineering and construction costs associated with the phased construction of concrete streets with curb and gutter, and their associated storm sewers for all streets within the area bounded by West Main Street to the north, South Broadway to the east, Fairmont Parkway to the south, and State Highway 146 to the west. It would identify streets that are candidate collectors to improve access, traffic flow and pedestrian movement. It would also identify existing low-volume streets or street segments that are candidates for abandonment or re- purposing as future public improvements. A comprehensive drainage study entitled 2010 Concrete Street Program for the City of La Porte - Drainage Study and dated May 2011 was prepared by CobbFendley under separate cover for this Study. The proposed drainage plan satisfies City requirements and will serve as the storm water master plan for the project area. It will use the four existing outfalls while replacing roadside ditches and driveway culverts with inlets, underground storm sewer networks, and concrete streets with curb and gutter. Also, to the extent possible, it will use existing available storm sewer systems. CobbFendley recommends widening the pavement of South 3rd Street and South 8th Street (a Harris County road) to serve as the two north-south collectors and West A Street and West G Street to serve as the two east-west collectors, all with 8 ft. to 10 ft. wide sidewalks on both sides; widening the streets narrower than 28 ft. to 28 ft. with 5 ft. wide sidewalks on both sides; and widening streets wider than 28 ft. to 36 ft. with oversized sidewalks on both sides. Based on available information, no additional rights-of-way are necessary at this time. Four east-west streets that do not serve as significant transportation connectors between South 8th Street and South Broadway were identified for pavement area reduction: West C Street, West D Street, West E Street and West F Street. Two options to reduce their pavement area are identified in this Study. The first ten construction phases identified in this Study place a priority on the construction of the storm sewer outfall structures, trunk storm sewer systems and the two north-south and two east-west collector roadway sections. Subsequent phases (15 to 20) complete the storm sewer system networks and street pavement improvements throughout the project area. For planning purposes, the budget for each construction phase defined herein has been held to approximately $1.5M: an amount which the City agreed is feasible on an annual basis. The composition and sequence of the construction phases are for planning purposes only. The City may reorder, sub- divide, combine or eliminate a phase or phases, or exclude or supplement the improvements within a phase or phases as available funding permits. The total estimated engineering and construction cost for the all of the phases associated with this Study is $42.3M. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 4 - AUTHORIZATION The City of La Porte (City) awarded Cobb Fendley Associates, Inc. (CobbFendley) the contract to perform the Concrete Street Program Study (Study) on December 13, 2010. The City authorized CobbFendley to proceed with the work by letter dated December 21, 2010. PROJECT OVERVIEW The Study was identified during a City Council retreat held in the summer of 2010. Its purpose would be to determine the engineering and construction costs associated with the phased construction of concrete streets with curb and gutter, and their associated storm sewers for all streets within the area bounded by West Main Street to the north, South Broadway to the east, Fairmont Parkway to the south, and State Highway 146 to the west (see Exhibit 1). The Study would develop and present a Phased Construction Plan (Plan) for storm sewer systems to replace the existing combination drainage systems comprising roadside ditches, driveway culverts and storm sewers. Construction of the “backbone” or trunk storm sewer systems would be accomplished in the Plan’s early phases. Subsequent phases would include construction of the storm sewer systems’ networks. Existing roadways, which would be demolished to facilitate construction of the storm sewer systems, would be replaced with concrete streets with curb and gutter. The final phases of the Plan would include replacement of the remainder of the project area’s existing roadways with concrete streets with curb and gutter. The Study would identify streets that are candidate collectors to improve access, traffic flow and pedestrian movement. Throughout the project area consideration would be given to the need to preserve or provide on-street parking to serve existing residents and businesses. The Study would identify existing low-volume streets or street segments that are candidates for abandonment or re-purposing as future public improvements. DRAINAGE DESIGN The complete drainage study associated with this project was prepared by CobbFendley. It is presented under separate cover in a report entitled: 2010 Concrete Street Program for the City of La Porte - Drainage Study Dated May 2011, the Drainage Study is currently under review by the Harris County Flood Control District (HCFCD). Pertinent findings, analyses and recommendations from the Drainage Study are included herein for the reader’s convenience. The Drainage Study investigates, analyzes and recommends changes to the project area’s existing drainage infrastructure; including a trunk storm sewer network. This proposed trunk storm sewer network is designed to accommodate a 5-year storm event for full development of the project area. Drainage objectives included: City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 5 - • Analyzing the existing hydrologic and hydraulic conditions within project area to quantify the amount of flow in the existing condition; • Creating a proposed overall storm sewer plan for the project area which provides conveyance capacity for the 5-year design storm event; and • Addressing any impacts associated with the proposed improvements. Description The project area is located entirely within the City of La Porte, Harris County, Texas (see Exhibit 2). The total land area represented is approximately 282 acres (0.44 square miles). The land generally slopes southward at an average of 0.2% slope. Elevations range from 20 feet in the northern region to 14 feet in the southern region. South 5th Street serves as the drainage divide in the east-west direction. Land use along the project area’s perimeter, including West Main Street, South Broadway Street, Fairmont Parkway and South 8th Street, is general commercial (GC); whereas the majority of the remainder of the project area is low density residential (R-1), with the most lots less than ¼ acre in area. The project area is served by HCFCD Unit No. F216-00-00 (Little Cedar Bayou), and its tributary F216-04-00. Little Cedar Bayou has been studied by the Federal Emergency Management Agency (FEMA) and has been issued a Flood Insurance Rate Map (FIRM) depicting base flood elevations and the limits of the 100-year floodplain (see Exhibit 3). Existing Condition The existing drainage area boundaries were determined based on overland sheet flow patterns, parcel boundaries, and existing storm sewers. Overland flow patterns were based on available LiDAR data and known channel configurations. Drainage lines and catchment boundaries were delineated using ArcHydro (an extension application of ArcGIS by ESRI). Based on this information, the project area in the existing condition was divided into four separate drainage systems. The existing condition drainage area map can be seen in Exhibit 4. • System A serves the northern one-third portion of the project area from West A Street to West D Street and South 8th Street to South 1st Street; draining approximately 107 acres. The storm system comprises roadside ditches and driveway culverts, with storm sewer trunk lines running south along South 4th Street and west along West D Street. This system discharges into a grass-lined ditch to the west of South 8th Street, flowing off-site into a 6-ft. x 6-ft. box culvert beneath SH146. The system is currently less than a 2-year design capacity. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 6 - • System B serves the central-western portion of the project area from West E Street to West H Street and from South 8th Street to South 5th Street; draining approximately 50 acres. The storm system comprises roadside ditches and driveway culverts which flow to the south and west. This system converges along West H Street and discharges west of South 8th Street into Little Cedar Bayou through both a 36-in. corrugated metal pipe and an 8-ft. overflow weir. The system is currently less than a 2-year design capacity. • System C serves the southwestern portion of the project area from West H Street to Fairmont Parkway and from South 8th Street to South 5th Street; draining approximately 38 acres. The storm system comprises roadside ditches and driveway culverts, with storm sewers at some locations along West I Street, South 6th Street and Fairmont Parkway. The system flows into the Fairmont Parkway storm sewer which discharges to the west of South 8th Street directly into Little Cedar Bayou through a 48-in. reinforced concrete pipe. The system is currently less than a 2-year design capacity. • System D serves the southeastern one-third portion of the project area from West E Street to Fairmont Parkway and from South 4th Street to South 1st Street; draining approximately 81 acres. The storm system comprises roadside ditches and driveway culverts, with storm sewer trunk lines running south along South 2nd Street and South 4th Street. This system flows into the Fairmont Parkway storm sewer which converges at South 3rd Street and discharges into F216-04-00 through a 72-in. reinforced concrete pipe. The system is currently less than a 2- year design capacity. Proposed Condition The proposed drainage calculations were based on a 5-year design storm event as required by City drainage criteria. Flows were calculated using the rational formula. The runoff coefficient was determined by using values defined by the City drainage criteria. In areas where multiple land use types were present, weighted C-values were calculated. Rainfall intensities were based on the City’s IDF curves. Times of Concentration for each drainage area were calculated from the hydraulic flow path in each drainage area using 0.5 fps for overland, 1.5 fps for drainage ditches and 3 fps for storm sewers. The proposed drainage area boundaries were designed to decrease the runoff volume from Systems A, B, and C to a volume less than or equal to the existing condition. This was accomplished by reducing the areas of these three drainage areas and re-routing the flow from the orphaned areas into System D. In the proposed hydrologic model, there is an increase in imperviousness throughout the project area due to sidewalk and roadway City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 7 - improvements. The total additional imperviousness was calculated for each drainage area, which translated into an increase of the runoff coefficient in the proposed model. The proposed drainage plan will serve as the storm water master plan for the project area. It will use the four existing outfalls while replacing roadside ditches and driveway culverts with inlets, underground storm sewer networks, and concrete streets with curb and gutter. Also, to the extent possible, the proposed drainage plan will use existing available storm sewer systems (see Exhibit 5). During future design phases of this program, alternate pipe shapes and slopes can be utilized to address cover issues or utility-related conflicts once a full topographic and utility survey is completed. However, based on a limited survey, some potential utility conflicts were identified along the South 3rd Street trunk sewer (see Exhibit 14). • System A serves the northwestern portion of the project area from West A Street to West F Street and South 8th Street to South 6th Street; draining approximately 68 acres. The storm system comprises pipes ranging from 24-in. to 60-in. The existing storm sewer (54-in. to 72-in.) in West D Street was retained since it can convey the design flow. This system will continue to discharge into a grass-lined ditch to the west of South 8th Street and flow off-site into a 6-ft. x 6-ft. box culvert beneath SH146. • System B serves the central-western portion of the project area from West F Street to West H Street and from South 8th Street to South 5th Street; draining approximately 28 acres. The storm system comprises pipes ranging from 30-in. to 78-in. This system converges along West H Street and will discharge west of South 8th Street into Little Cedar Bayou. • System C serves the southwestern portion of the project area from West H Street to Fairmont Parkway and from South 8th Street to South 5th Street; draining approximately 27 acres. The storm system comprises 30-in. pipes. The existing storm sewers (24-in. to 48-in.) in West I Street, South 6th Street, South 7th Street, and Fairmont Parkway were retained since each can convey the design flow. This system converges along Fairmont Parkway and will continue to discharge to the west of South 8th Street directly into Little Cedar Bayou through an existing 48-in. reinforced concrete pipe. • System D serves the eastern half of the project area from West A Street to Fairmont Parkway and from South 5th Street to South 1st Street; draining approximately 165 acres. The storm system comprises pipes ranging from 24-in. to 120-in. This system flows into a proposed trunk sewer (48-in. to 114-in.) in South 3rd Street. The existing storm sewer (42-in. to 66-in.) in Fairmont Parkway was retained since it can convey the design flow. This system converges in Fairmont Parkway at South 3rd Street and will continue to discharge into F216-04- 00 through a proposed 120-in. reinforced concrete pipe. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 8 - Although the proposed System D has a significant increase in flow from the existing condition, this increase is allowable per the City’s design criteria because the outfall is downstream of SH 146, in close proximity to Galveston Bay: there are no homes or businesses downstream to impact. Also, it is important to note that the increased flow from the proposed improvements will not result in a change to the FEMA effective 100-year floodplain. The 100-year floodplain for this area is based upon a coastal flooding elevation of 12.5 feet and is not directly related to riverine flooding. PAVEMENT IMPROVEMENTS/PAVEMENT AREA REDUCTION Existing Rights-of-Way All of the streets within the project area have 60-ft. wide rights-of-way except South 3rd Street, South 8th Street, West B Street, West D Street, West F Street and West H Street which have 80-ft. wide rights-of-way. Note that South 8th Street is a Harris County road. Infrastructure improvements within this right-of-way must be coordinated with the Harris County Public Infrastructure Department –Architecture and Engineering Division and Harris County Precinct Two. Existing Roadway Sections The majority of the existing roadway sections within the project area comprise 20-ft. wide, two-lane, two-way asphalt-paved roads with roadside, open-ditch drainage systems. Several have roadway sections comprising 36-ft. wide, two-lane, two-way asphalt-paved roads with roadside, open-ditch drainage systems. These include: • South 1st Street from West Main Street to West B Street; • South 2nd Street from West Main to South D Street; • West A Street from South 3rd Street to South Broadway Street; and • West G Street from South 4th Street to South Broadway Street. There are also several roadway sections comprising concrete streets with curb and gutter and closed-conduit storm sewer systems (see Exhibit 6). These include: • South 4th Street from West A Street to West H Street; • West D Street from South 6th Street to South Broadway Street; and • West G Street from South 4th Street to South Broadway Street. Existing On-Street Parking As mentioned above, land use along the project area’s perimeter is general commercial, and its interior is primarily low density residential. Many of the businesses in the commercial areas have insufficient off-street parking capacity. This shortfall is supplemented by existing City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 9 - on-street parking1 along West Main Street, South Broadway Street, Fairmont Parkway and South 8th Street and the streets or alleys behind and parallel to these streets. Within the project area’s low density residential interior there are both institutional and multi-family uses including, but not limited to churches at both the South 1st Street - West B Street intersection and South 7th Street - West C Street intersection, and apartments near the South 1st Street - West G Street intersection and South 6th Street - Fairmont Parkway intersection. As in the commercial areas, insufficient off-street parking for these facilities is supplemented by existing on-street parking capacity (see Exhibit 7). Existing Pavement Area There are several existing streets and street segments within the interior of the project area that appear to have low traffic volumes. These can be reconstructed using narrower width pavement, restriped, resigned, realigned, partially or wholly abandoned, or any feasible combination thereof to reduce pavement area, reduce traffic volume, reduce future pavement maintenance costs, be re-purposed as a public improvement, or combination. FINDINGS AND RECOMMENDATIONS Proposed Rights-of-Way Based on available information and given the schematic nature of this Study, no additional rights-of-way are foreseen as necessary at this time. Proposed Roadway Sections This Study was commissioned for the purpose of determining the feasibility and cost to reconstruct all of the roadway sections within the project area from asphalt with open ditch drainage to concrete (6 in. and 7 in. thick with curb and gutter) with storm sewer drainage. The recommended roadway sections fall into one of three categories as follows: • Streets narrower than 28 ft. shall be widened to 28 ft. with 5 ft. wide sidewalks on both sides; • Streets wider than 28 ft. shall be widened to 36 ft. with oversized sidewalks on both sides; and • Two east-west streets and two north-south streets shall be widened to 36 ft. to serve as traffic collectors between the four perimeter streets, provide more traffic connectivity, and provide more on-street parking capacity. Oversized sidewalks are recommended on both sides of these streets to better facilitate pedestrian flow. 1 An area designated for or where parallel (or head‐in) vehicle parking is permitted usually along the curb lane(s) of a curbed street, or along the edge of pavement or unpaved shoulder (or combination) of an un‐curbed street. In all cases the parking occurs within the limits of the street’s right‐of‐way. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 10 - These sidewalks can be provided in place of what was previously the unusable area for the roadside drainage ditches. CobbFendley recommends widening the pavement of South 3rd Street and South 8th Street to serve as the project area’s two north-south collectors. Additional reasons include: • The rights-of-way of both streets are 80 ft.; • South 3rd Street is the location for the System D trunk storm sewer system; • South 8th Street is a Harris County roadway and cost sharing opportunities may be available to the City. In coordinating with Harris County, the City should note that the total construction cost (in three separate phases) is estimated at $3.2M per this Study. CobbFendley recommends widening the pavement of West A Street and West G Street to serve as the project area’s two east-west collectors. Additional reasons include: • Additional on-street parking capacity one block south of and parallel to West Main Street will benefit the West Main Street businesses; • A portion of West G Street is already 36 ft. wide concrete pavement with curb and gutter; • West G Street extends the full width of the project area from the northbound frontage road of SH 146 to South Broadway; and • There is an existing traffic signal at the West G Street – South Broadway intersection to contribute to the street’s role as a collector. See Exhibit 8 Potential Savings The city could potentially realize some cost savings by preserving some of the existing concrete streets (See Exhibit 6) which have a total area of about 13,500 square yards. Although the existing concrete streets would likely require the intersections to be reconstructed with adequate drainage inlets, the City could potentially save up to $300,000 if at least 50% of the streets could be salvaged as determined on a phase-by-phase basis (not included in current cost estimate). Proposed On-Street Parking Any plan to reconstruct the existing streets in the project area, especially where reduced pavement area is a criterion, must address the preservation of existing on-street parking capacity. Using existing land use and available on-street parking, the following ratios were derived as a planning tool to assure that existing parking capacity is maintained. These are for reference only; actual ratios should be determined during final design: City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 11 - • Low density residential (R-1): 20 sq. yd./acre • General commercial (GC): 55 sq. yd./acre • (MS, MSO) Main Street (MS): 80 sq. yd./acre • Main Street Overlay (MSO): 80 sq. yd./acre Proposed Pavement Area Reduction The grid pattern of the existing interior streets facilitates opportunities to reduce the paving footprint that other layouts cannot. Four east-west streets that do not serve as significant transportation connectors between South 8th Street and South Broadway were identified: West C Street, West D Street, West E Street and West F Street. Two options to reduce their pavement area were identified as follows: • Option A This option consists of reconstructing the four streets’ roadway sections to 12 ft. wide by 6 in. thick concrete pavement without curbs, with open ditch drainage systems, and rough-graded shoulders which allow ample width for on-street parking. This pavement area footprint will be less than the proposed 28 ft. wide pavement recommended in this Study. It will also be less than the existing width of approximately 20 ft. (see Exhibit 9). This option will save the City nearly $600,000 in capital costs (see Appendix A – Cost Estimate 3) and it could save the City up to 50% in maintenance costs because the paving area will be over 50% less than that proposed for the surrounding streets. • Option B This option consists of erecting bollards at mid-block in the four streets to prohibit the flow of east-west through traffic. Local residents would have access for parking, or other use. Each street would be signed “No Outlet” along South 3rd Street, South 4th Street, South 5th Street, South 6th Street, South 7th Street (with the exception of West D Street and West E Street), and South 8th Street (with the exception of West D Street and West E Street). These latter two bocks must remain open to provide residents access to the alley that connects West D Street and West E Street between South 7th Street and South 8th Street. This option would allow seven, one-half blocks of pavement to be demolished leaving grass-covered rights-of-way for public use: there are no driveways on these half- blocks (see Exhibit 10). In considering the cost for this option, two pavement types were considered: concrete and “Drivable Grass”, which is open-celled concrete pavers that allow grass to grow within the open cell (see Appendix B). Both pavement widths would be 20 ft. wide; however the concrete would be 6 in. thick and the pavers would be their manufactured height. The City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 12 - roadway section comprises the pavement without curbs, with open ditch drainage system, and rough-graded shoulders which allow ample width for on-street parking. The 20 ft. by 6 in. concrete pavement may save the city up to $280,000 in capital costs (see Appendix A – Cost Estimate 3) and it could save the City up to 50% in maintenance costs because the paving area will be less than that proposed for the surrounding streets and the mid-block bollards will eliminate thru traffic thus extending the life of the pavement. However, the “Drivable Grass” (see Appendix B) pavement type would be the most beneficial alternative for Option B because the City would essentially have grass-covered rights-of-way throughout the subject area that would be functional enough to accommodate parking needs, serve as an aesthetically pleasing park- type recreational area, and save the City approximately $440,000 in capital costs (see Appendix A – Cost Estimate 3). In any scenario which prevents or significantly reduces the volume of through-traffic on a roadway, whether by reduced pavement width, signing, striping, barriers, or other traffic calming measure(s), the City must consider the potential negative impacts to such services as public transportation, and police, fire, and emergency medical access. The City must also consider potential impacts to pedestrian safety and handicap accessibility. Overland Flow Conveyance Although the proposed plan transforms all the storm sewer systems from less than a 2-year design to a 5-year design, the proposed street elevations as constructed from one phase to another will also play an important role in the overall plan effectiveness. As the streets are constructed they will act as conveyance channels for overland flow during large storm events, therefore it will be important for city staff to closely review the phased designs to make sure that they generally move storm water toward West D Street, West H Street, and South 3rd Street and their respective outfalls (see Exhibit 11). CONSTRUCTION COST The construction cost of the improvements associated with this Study (see Appendix A) are based on current bids from Harris County’s Capital Projects’ bid tabulations, Texas Department of Transportation’s average low bid prices, and other construction bid information that CobbFendley has accumulated from the City of La Porte and other municipalities in the greater Houston area. The cost estimates included herein are as follows: • Cost Estimate 1 - Overall Construction, Engineering, Surveying, and Contingencies • Cost Estimate 2 - Overall Construction and Phases 1-10 • Cost Estimate 3 - Overall Construction and Pavement Reduction Options The various categories in the estimates include: City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 13 - • General (mobilization, traffic control etc.); • Paving; • Demolition; • Storm sewer system; • Miscellaneous utility (minimal sanitary sewer and water line adjustments); • Engineering and surveying; and • Contingency (20%). The contingency used in the overall cost estimate is considered reasonable and conservative for the schematic level design proposed in this Study. It increases the budget to account for known and unknown items that may be identified during preliminary and final design. Cost estimate items of additional interest: • Improvements to existing channels may cost more than expected or additional channel improvements may be required. • The impacts for the storm sewer outfalls near Fairmont Parkway, West H Street, West D Street, and the storm sewer upstream of the Arizona Ditch are considered to be mitigated by reducing the drainage areas to their respective outfalls. However, the drainage area for the South 3rd Street outfall at Fairmont Parkway has been increased to relieve the impacts to the other outfalls. Therefore, an item for Channel Improvements Downstream ($250,000) has been included to make provision for channel improvements to the South 3rd Street ditch downstream of the outfall adjacent to the wastewater treatment plant. Although the Drainage Study recommends improvements to the South 3rd Street ditch, it will alleviate the need for major improvements to the other outfall ditches. The channel improvements to the South 3rd Street ditch will most likely be in the form of an earthen or concrete-paved trapezoidal weir structure on top of the existing culvert adjacent to the wastewater treatment plant. However, the improvements could take the form of an additional culvert or the complete re-opening of the channel. The provision in the estimate for the channel improvements is based on the weir approach. • The existing waterlines, especially the water services to the residences and businesses, could be shallow and require lowering to be compatible with the proposed street construction. This could create a major cost that exceeds the $400,000 in the Misc. Utility item. CobbFendley has a comprehensive list of bid items and unit costs based on a familiarity with construction project contracts in the City of La Porte; however construction prices can vary significantly over time. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 14 - CONSTRUCTION PHASING For planning purposes, the budget for each construction phase defined herein has been held to approximately $1.5M: an amount which the City agreed is feasible on an annual basis. The composition and sequence of the construction phases are for planning purposes only. The City may reorder, sub-divide, combine or eliminate a phase or phases, or exclude or supplement the improvements within a phase or phases as available funding permits. Approach The construction phasing approach for the Study places an early priority on the construction of the storm sewer outfall structures for System D (South 3rd Street beneath and south of Fairmont Parkway), and System B (West H Street from South 8th Street to Little Cedar Bayou). The next two phases simultaneously complete the construction of the System D trunk sewer and the reconstruction of South 3rd Street from West Main Street to Fairmont Parkway to a 36-ft. wide collector. Similarly, Phases 5 and 6 simultaneously complete the construction of the storm sewer improvements in and reconstruction of South 8th Street from West Main Street to Fairmont Parkway to a 36-ft. wide collector. Phases 7 through 10 complete the majority or all of the storm sewer and paving improvements in West A Street, West G Street, West H Street and South 7th Street (see descriptions following and Exhibit 12). Phase 11 and greater complete all of the remaining storm sewer and roadway improvements within the project area. Including Phase 11, approximately 15 to 20 additional phases are estimated (see Exhibit 13). Phase 1 • Construct the downstream channel improvements to F126-04-00 • Construct the 120-in. storm sewer and outfall structure in line with South 3rd Street from Fairmont Parkway south to F126-04-00 • Construct 114-in. through 108-in. storm sewer in South 3rd Street from Fairmont Parkway to West H Street • Construct the 36-ft. wide pavement and other improvements in South 3rd Street from Fairmont Parkway to West H Street • Potential conflict with existing 18 in. sanitary sewer is likely resolved with a conflict manhole (see Exhibit 14) • Benefits: Completion of South 3rd Street outfall structure and downstream channel improvements to F126-04-00; extension of pavement and System D trunk sewer system improvements in South 3rd Street. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 15 - Phase 2 • Construct the 78-in. storm sewer and outfall structure at Little Cedar Bayou in line with West H Street from the bayou to South 8th Street • Construct the 30-in. storm sewer in South 8th Street from Fairmont Parkway to West I Street • Construct the 54-in. storm sewer in South 8th Street from West H Street to West G Street • Construct paving and other improvements in South 8th Street from Fairmont Parkway to West G Street and in South H Street west to the pavement limit • Benefits: Completion of the System B outfall to Little Cedar Bayou. Phase 3 • Construct the 108-in. through 84-in. storm sewer in South 3rd Street from West H Street to West D Street • Construct the 36-ft. wide pavement and other improvements in South 3rd Street from West H Street to West D Street • Potential conflict with existing 8 in. sanitary sewer is likely avoided (see Exhibit 14) • Benefits: Extension of pavement and System D trunk sewer in South 3rd Street. Phase 4 • Construct the 72-in. through 48-in. storm sewer in South 3rd Street from West D Street to West A Street • Construct the 36-ft. wide pavement and other improvements in South 3rd Street from West D Street to West Main Street • Potential conflict with existing 8 in. sanitary sewer is likely avoided (see Exhibit 14) • Benefits: Completion of pavement and System D trunk sewer system improvements in South 3rd Street from Fairmont Parkway to West Main Street. Phase 5 • Construct the 48-in. through 24-in. storm sewer in South 8th Street from West E Street to West A Street • Construct 36-ft. wide pavement and other improvements in South 8th Street from West E Street to West Main Street • Benefits: Extension of pavement and completion of System A storm sewer in South 8th Street. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 16 - Phase 6 • Construct the 42-in. storm sewer in West G Street from South 8th Street to South 7th Street • Construct 36-ft. wide pavement and other improvements in South 8th Street from West G Street to West E Street • Construct 36-ft. wide pavement and other improvements in West G Street from the northbound frontage road of SH 146 to South to 7th Street • Benefits: Completion of pavement and System B storm sewer in South 8th Street from Fairmont Parkway to West Main Street. Extension of pavement and System B storm sewer in West G Street. Phase 7 • Construct the 60-in. through 30-in. storm sewer in South 7th Street from West E Street to West A Street • Construct the paving and other improvements in South 7th Street from West Main Street to West E Street. • Benefits: Extension of pavement and System A storm sewer in South 7th Street Phase 8 • Construct the 24-in. through 36-in. storm sewers in West A Street from South 7th Street to South 2nd Street • Construct the paving and other improvements in West A Street the northbound frontage road of SH 146 to South 2nd Street • Benefits: Extension of pavement and System A and System D storm sewer in West A Street Phase 9 • Construct the 30-in. storm sewer in West A Street from South 2nd Street to South 1st Street • Construct the 30-in. storm sewer in West G street from South 3rd Street to South 1st Street • Construct the 42-in. through 30-in. storm sewer in West H Street from South 3rd Street to South 1st Street • Construct the paving and other improvements in West A Street from South 2nd Street to Broadway • Construct the paving and other improvements in West G Street from South 3rd Street to Broadway City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 17 - • Construct the paving and other improvements in West H Street from South 3rd Street to Broadway • Benefits: Flood mitigation in the Repetitive Flooding Area northeast of the South 1st Street-West H Street intersection; Completion of West A Street within the project limits Phase 10 • Construct the 42-in. through 30-in. storm sewer in West G Street from South 7th Street to South 3rd Street • Construct the 48-in. through 36-in. storm sewer in West H Street from South 8th Street to South 6th Street • Construct the 36-ft. wide pavement and other improvements in West G Street from South 7th Street to South 3rd Street • Construct the paving and other improvements in West H Street from South 8th Street to South 5th Street • Benefits: Completion of West G Street within the project limits Phases 11and Greater For planning purposes, the budget for each construction phase defined herein has been held to approximately $1.5M: an amount which the City agreed is feasible on an annual basis. The composition and sequence of the construction phases are for planning purposes only. The City may reorder, sub-divide, combine or eliminate a phase or phases, or exclude or supplement the improvements within a phase or phases as available funding permits. Exhibit 13 shows the remaining portions of the project that can be planned in the future based on the methodology of using the north-south and east-west streets to determine the project scope from year to year. The phases can generally be described as full-width roadway construction within the rights-of-way that consist of either five to six blocks in the north-south direction, seven to eight blocks in the east-west direction, or some combination thereof. Additionally, the City will have ten phases of similar construction to compare and use to modify the phasing approach described herein. In addition, the total number of 100 ft. stations (639) has been provided on the cost estimate which, when divided by the overall cost, provides an average of approximately $660 per linear foot for all engineering and construction costs associated with the improvements. As each construction phase commences, the City can check the actual cost per linear foot against this average. The City can also continually improve upon this average cost metric as a tool to make informed planning decisions over time and with respect to the ultimate build-out of the entire project area. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 - 18 - CONCLUSION This Study satisfies the City’s scope of work by having: • Prepared schematic designs for four storm drainage systems in accordance with City requirements to serve the project area; • Examined existing rights-of-way widths of all the streets within the project area; • Identified two east-west streets (West A Street and West G Street) to serve as collectors between the northbound frontage road of SH 146 and South Broadway; • Identified two north-south streets (South 3rd Street and South 8th Street) to serve as collectors between West Main Street and Fairmont Parkway; • Identified four east-west streets that do not serve as significant transportation connectors between South 8th Street and South Broadway Street (West C Street, West D Street, West E Street and West F Street) and presented two schematic level options to reduce their pavement areas; • Developed ten priority phases each with a construction budget of approximately $1.5M to construct the storm sewer outfall structures, trunk storm sewer systems and the two north-south and two east-west collector roadway sections, and fifteen to twenty subsequent phases to complete the remaining storm sewer system networks and street pavement improvements throughout the project area; and • Prepared preliminary estimates for the engineering, surveying and construction costs associated with overall construction (including 20% contingency for the construction). Prepared construction cost estimates for the first ten priority phases and the pavement reduction options. City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 EXHIBITS VICINITY MAP Galveston Bay Cedar Byu B1 0 6 - 0 0 - 0 0 A 1 0 4 - 0 7 - 0 0 G 1 0 0 - 0 0 - 0 0 B1 0 9 - 0 0 - 0 0 B1 1 2 - 0 2 - 0 0 F216-00-00 A 1 0 4 - 1 3 - 0 0 F101-00-00 B1 1 2 - 0 0 - 0 0 A104-00-00 B1 0 0 - 0 0 - 0 0 F101-03-00 F103-00-99 F300-00-00 A 1 0 4 - 0 4 - 0 0 F2 1 2 - 0 0 - 0 0 F101-06-00 F210-00-00 F1 0 1 - 0 0 - 9 9 F301-01-00 O10 0 - 0 0 - 0 0 F2 1 6 - 0 1 - 0 0 A1 0 4 - 1 2 - 0 1 F103-00-00 F101-01 - 0 0 Q200 - 0 0 - 0 0 B106-02-00 B 1 0 7 - 0 0 - 0 0 G1 0 4 - 0 8 - 0 0 F3 0 3 - 0 0 - 0 0 B 1 0 6 - 0 5 - 0 0 F30 2 - 0 0 - 0 0 A104-07-01 F1 0 1 - 0 8 - 0 0 F2 1 6 - 0 4 - 0 0 A104-10-02 B 1 0 9 - 0 3 - 0 0 La PorteLa Porte Deer ParkDeer Park BaytownBaytown PasadenaPasadena Morgan PointMorgan Point ShoreacresShoreacres TX-14 6 TX-225 TX - 1 4 6 N TX- 1 4 6 TX - 1 4 6 TX-225 RE D B L U F F R D RE D B L U F F R D TX-225 N L ST PORT RD W FAIRMONT PKY SPENCER HWY EA S T B L V D BAY AR E A B L V D SE N S R D TX - 1 4 6 S S B R O A D W A Y S T UN D E R W O O D R D TX-146-BR E 13TH ST W MAIN ST TX - 1 4 6 N E MAI N S T E PASADENA BLVD S B A T T L E G R O U N D R D BAT T L E G R O U N D R D FA R R I N G T O N B L V D SHORE ACRES BLVD CHOATE RD N B R O A D W A Y S T S B L A C K W E L L S T PAR K D R PAR K A V E TX-146-BR TX-225 TX - 1 4 6 S W FAIRMONT PKY TX - 1 4 6 N N P ST N H ST STRANG RD E X ST S 8 T H S T E E ST TR I C I T Y B E A C H R D PO W E L L R D E A ST S 4 T H S T E V E R G R E E N R D N 1 6 T H S T S 1 S T S T E G S T S 6 T H S T S 7 T H S T TX - 1 4 6 N N D ST S 2 N D S T MI L L E R C U T R D S 1 6 T H S T W A ST W B ST CA N A D A R D E MAI N S T B A Y P O R T B L V D SE N S R D BAYR I D G E R D P ST BA Y P A R K R D N 1 1 T H S T E D ST N L ST PORTER RD MC CABE RD E B ST E F ST UN D E R W O O D R D BA Y A R E A B L V D DR I F T W O O D D R RUSTIC GATE R D S N U G E N T S T BALLI S T E R N AVENUE H C H E M I C A L R D BELFAST LN N 3 R D S T PO L K L N DWIRE DR R O S E B E R R Y D R S C A R R O L L S T N SHADY LN CARLO W L N LO M A X S C H O O L R D E R E A T A D R SO M E R T O N D R OL D U N D E R W O O D R D FAIRFIELD ST LEE D R RO B I N S O N R D TE X A S S T FA R R I N G T O N D R BA Y O A K S H A R B O R D R PI N E S T SHELL ROC K R D RO H M & H A A S R D ELM S T S O A K S T W L N 1 3 T H S T NE W W E S T D R CANIFF RD N C ST FI L M O R E L N PA R K M E A D O W S A V E SIM S R D OLD CLARK RD PARK DR S R ST S C ST GL A D W Y N E L N GL E N M E A D O W S D R E M E A D O W D R LESSA S 1 7 T H S T BA Y O U D R DORAL D R S 1 4 T H S T WREN ST ST E E L P K Y LE M O N L N PA R K G R N OLD LA P O R T E R D OAKDALE AVE LAFITTE DR MONTGOMERY LN W H ST SC O T C H M O S S L N N E ST MI S S I O N D R WI L S O N R D CANNON W G ST S Y ST CARDINAL ST CLAIRMO N T D R MA R Y L N FAIRMONT LA U R A L N W P L A N T A T I O N D R C R U I S E R D BA Y O U G L E N D R TA N Y A D R LEE S T PINE BLUFF ST PLAINBROOK ST SNAPPER DR C ST ROS C O E S T W FAIRMONT PKY HUMMINGBIRD ST SH I R L E Y L N E C ST BAYSIDE DR N L ST TX - 1 4 6 N N H ST W B STW B ST UN D E R W O O D R D SUBMITTED: SCALE: 1" = 4000' DATE: 4/18/11 SURVEY BY: F B NO: DESIGNED BY: CA DRAWN BY: CE SHEET No.: 1 OF 1 DWG. NO: PROJECT LOCATION LEGEND PROJECT LOCATION HCFCD CHANNELS EXHIBIT 1 13430 Northwest Freeway, Suite 1100Houston, Texas 77040713.462.3242 | fax 713.462.3262 | www.cobfen.comJOB NO. 1012056 Texas Registration No. 274 CONCRETE STREET PROGRAM STUDY CITY OF LAPORTE LAPORTE, TEXAS PROJECT LOCATION PROJECT AREA MAP 14 40 18 18 16 14 1 0 1 4 20 1 2 1 6 18 22 18 38 16 18 22 18 14 18 20 14 20 38 38 16 20 18 38 14 2 16 22 22 16 20 14 2 6 1 4 1 8 18 18 20 18 6 16 18 30 12 12 14 6 14 38 36 18 1 4 18 24 14 1 4 14 30 16 16 36 18 1 8 14 1 4 1 6 34 14 12 34 36 18 12 1 6 14 18 20 14 22 12 14 18 14 14 32 18 1 4 32 20 14 28 34 18 18 8 14 14 28 36 20 18 12 30 18 18 8 16 16 12 18 30 14 3 4 14 14 20 20 14 14 32 28 1 4 1 4 14 16 20 1 2 18 28 26 18 26 6 18 34 14 20 16 26 20 18 26 32 30 12 18 6 14 20 16 14 24 2 4 14 24 18 24 32 30 18 10 22 22 22 1 4 14 22 12 30 28 26 8 18 12 20 20 18 20 14 28 26 16 18 14 12 1624 2 6 14 18 1 4 18 14 22 18 22 24 16 18 18 18 14 6 14 1212 12 16 14 12 20 20 8 14 18 22 14 20 16 20 2 0 18 20 2 6 10 14 1 2 16 18 1 8 18 18 18 18 18 18 18 18 18 18 18 18 18 18 20 14 14 14 14 14 14 14 1 4 14 14 14 14 14 14 1 4 14 1 4 14 14 16 16 16 16 16 16 16 16 16 1 6 16 1 6 16 16 16 16 16 16 1 6 14 1 2 12 12 12 12 12 12 12 12 12 12 12 12 1 0 10 10 10 10 10 10 10 10 10 10 1 0 8 8 8 8 8 8 8 6 6 6 4 4 4 4 2 2 2 20 20 20 20 20 14 1 8 14 18 1 8 18 14 16 16 16 16 16 16 H O L M E S A PAR K MAIN MAIN MAINPOLK MADISON S A N J A CIN T O B R O W N E L L BR O A D W A Y BR O A D W A Y PARK K A N S A S B L A C K W E L L CIRCLE PA T T Y D GARDEN WALK 14 6 14 6 14 6 FAIRMONT FAIRMONT KANSAS BAYSH O R E SANDY ID A H O A A I U T A H BAYS H O R E LOBI T LEE H ROS C O E D 17 T H E F E E MADISON B B E G G C C F D HE ADAMS K C POLK TYLER 16 T H 16 T H B TYLER 6T H 6T H W L 11 T H C A17 T H 12 T H POLK I N U G E N T O H I O ADAMS 18 T H A B 8T H 8T H 8T H 7T H 7T H 14 6 14 6 14 6 1S T 1S T C A R R O L DB IO W A 14 T H IO W A 3R D 3R D 5T H 5T H 2N D 2N D 4T H 4T H CAR R O L L O H I O SA N D Y E D H 15 T H K CED A R NU G E N K SYLVA N GARFIE L D CEDAR COVE P O P L A R C O V E A R I Z O N A HAZEL HO L M E IO W A 13 T H 14 T H MO N T A N A TE X A S BR O W N E BRO W N E L L JEFFER S O N UTAH GROVE H A M I L T O N G M F C 25 T H OAK GROVE PAR K W A Y 14 6 14 6 SEA BREEZE BLA C K W E L L MONTAN A SH 146-SH 146;FAIRMONT 14 T H SH 146-SH 146;MAIN SH 146-SH 14 6 ;M AI N SH 146-SH 146;MAIN SH 1 46-SH 14 6;MAIN 23 R D 14 6 14 6 EXPORT BAY S H O R E B A Y S H O R E OR E G O N ORE G O N F 2 1 6 - 0 0 - 0 0 F2 1 6 - 0 2 - 0 0 A1 0 4 - 0 7 - 0 0 F 2 1 6 - 0 1 - 0 0 F 2 1 0 - 0 0 - 0 0 F2 1 2 - 0 0 - 0 0 F2 1 6 - 0 4 - 0 0 A104-07-01 SUBMITTED: SCALE: 1" = 1000' DATE: 4/18/11 SURVEY BY: F B NO: DESIGNED BY: CA DRAWN BY: CE SHEET No.: 1 OF 1 DWG. NO: LEGEND HCFCD CHANNELS 2-FT CONTOURS PROJECT LIMITS EXHIBIT 2 13430 Northwest Freeway, Suite 1100Houston, Texas 77040713.462.3242 | fax 713.462.3262 | www.cobfen.comJOB NO. 1012056 Texas Registration No. 274 CONCRETE STREET PROGRAM STUDY CITY OF LAPORTE LAPORTE, TEXAS PANEL 0945L MAP NUMBER48201C0945L MAP REVISED:JUNE 18,2007 Federal Emergency Management Agency (SEE MAP INDEX FOR FIRM PANEL LAYOUT) Notice to User:The Map Number shown below should be usedwhenplacingmaporders;the Community N...ber shown above should be used on insurance applications for the subjectcommunity. PANEL 945 OF 1150 FIRM FLOOD INSURANCE RATE MAP HARRIS COUNTY, TEXAS AND INCORPORATED AREAS ~ COMMUNITY ~PANEL SUFRX MORGANSPOINT,CIlYOF 480305 Oll45 IAPORTE,crrvOF 485487 Oll45 _COUNTY, UNllIICORPORAlEDAREAS 480287 Oll45 PASADENA,CIlYOF 480307 0945 MAP SCALE 1IF =1000' ml~===========~ 500 0 1000 2000CI:J:H=r::::::EH=r:::::i!====r:===E!~=====~l FEET FF=4=r-IF=4F==r~F=4==r------t========::=::j1 M This is an official copy of a portion of the above referencedflood map.It was extracted using F-MIT On-Line.This map does not reflect changes or amendments which may have been made subsequentto the date on the title block.For the latest product information about National Flood Insurance Program flood maps checkthe FEMA Flood Map Store atwww.msc.fema.gov ZONEAE (El12) ZONEVE (El17) ZONEAE (El12) ZONEAE (El13) ZONEVE (EllS) ZONEVE (El17) 0a::en MADISON Z TYLE ~~~~~b>I-~fI) ADAMS :I:::t::I:::I:::t:0 0 l-I-l-I-l-I-a::Z ~CX)I'<0 10 ...r C?N POLK z z z z z z W MAIN ST ZONE X W A ST W B ST C ST D ST PARKWAY EXISTING CONDITIONDRAINAGE AREA MAP A A MA I N MA I N G G S A N J A C I N T O BROADWAY BROADWAY 146 146 FA I R M O N T H H FA I R M O N T A I D D B B E E C C F F C 6TH 6TH 6TH 11TH B 8TH 8TH 8TH 7TH 7TH 7TH 146 146 146 1ST 1ST 3RD 3RD 3RD 5TH 5TH 2ND 2ND 2ND 4TH 4TH E K K SH 146-SH 146;MAIN S H 146-S H 146;MAIN146 146 146 146 146 146 F216-0 0 - 0 0 F216-04-00 F216-00-00 EXIST.36'' STM. EXIST.18'' STM. EXIST.24'' STM. EX I S T . 66 ' ' S T M . EX I S T . 48 ' ' S T M . EX I S T . 42 ' ' S T M . EX I S T . 15 ' ' S T M . EX I S T . 54 ' ' S T M . EX I S T . 60 ' ' S T M . EXIST.36'' STM. EXIST.42'' STM. EXIST.24'' STM. EXIST.24'' STM. EXIST.24'' STM. EX I S T . 60 ' ' S T M . EX I S T . 48 ' ' S T M . EXIST.48'' STM.EX I S T . 18 ' ' S T M . EXIST.24'' STM. EX I S T . 18 ' ' S T M . EX I S T . 48 ' ' S T M . EX I S T . 42 ' ' S T M . EX I S T . 24 ' ' S T M . EX I S T . 18 ' ' S T M . EX I S T . 48 ' ' S T M . EX I S T . 24 ' ' S T M . EX I S T . 66 ' ' S T M . EXIST.36'' STM. EX I S T . 18 ' ' S T M . EX I S T . 48 ' ' S T M . EX I S T . 54 ' ' S T M . EXIST.78" STM. SYSTEM 'D'87.8 ACRES SYSTEM 'A'106.8 ACRES SYSTEM 'B'49.7 ACRES SYSTEM 'C'38.0 ACRES SUBMITTED: SCALE: 1" = 400' DATE: 4/18/11 SURVEY BY: F B NO: DESIGNED BY: CA DRAWN BY: CE SHEET No.: 1 OF 1 DWG. NO: EX I S T . 72 " S T M . LEGEND EXISTING DRAINAGE AREA EXISTING STORM SEWER HCFCD CHANNELS FLOW DIRECTION 13430 Northwest Freeway, Suite 1100Houston, Texas 77040713.462.3242 | fax 713.462.3262 | www.cobfen.comJOB NO. 1012056 Texas Registration No. 274 CONCRETE STREET PROGRAM STUDY CITY OF LAPORTE LAPORTE, TEXAS EXHIBIT 4 PROPOSED CONDITIONDRAINAGE AREA MAP A A MA I N MA I N G G S A N J A C I N T O BROADWAY BROADWAY 146 146 FA I R M O N T H H FA I R M O N T A I D D B B E E C C F F C 6TH 6TH 6TH 11TH B 8TH 8TH 8TH 7TH 7TH 7TH 146 146 146 1ST 1ST 3RD 3RD 3RD 5TH 5TH 2ND 2ND 2ND 4TH 4TH E K K ARIZON A SH 146-SH 146;MAIN S H 146-S H 146;MAIN146 146 146 146 146 146 F216-0 0 - 0 0 F216-04-00 F216-00-00 EX I S T . 42 ' ' S T M . EX I S T . 60 ' ' S T M . EX I S T . 48 ' ' S T M . EX I S T . 66 ' ' S T M . EX I S T . 54 ' ' S T M . EX I S T . 24 ' ' S T M . EX I S T . 72 ' ' S T M . EXIST.30'' STM. EX I S T . 42 ' ' S T M . EX I S T . 54 ' ' S T M . EX I S T . 48 ' ' S T M . EX I S T . 66 ' ' S T M . EXIST.24'' STM. EX I S T . 48 ' ' S T M . PR O P . 78 ' ' S T M . PROP.84'' STM. PROP.60'' STM. PROP.54'' STM. PROP.72'' STM. PROP.96'' STM. PROP.108'' STM. PROP.114'' STM. PR O P . 30 ' ' S T M . PR O P . 48 ' ' S T M . PR O P . 24 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 36 ' ' S T M . PROP.120'' STM. PROP.24'' STM. PR O P . 42 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 30 ' ' S T M . PROP.54'' STM. PR O P . 36 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 36 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 36 ' ' S T M . PR O P . 42 ' ' S T M . PROP.42'' STM. PROP.30'' STM. PR O P . 42 ' ' S T M . PR O P . 24 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 42 ' ' S T M . PR O P . 30 ' ' S T M . PROP.36'' STM. PROP.30'' STM. PROP.48'' STM. PR O P . 30 ' ' S T M . PR O P . 36 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 42 ' ' S T M . PROP.30'' STM. PR O P . 30 ' ' S T M . PROP.108'' STM. PROP.72'' STM. PR O P . 30 ' ' S T M . PROP.96'' STM. PR O P . 42 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 30 ' ' S T M . PR O P . 24 ' ' S T M . PROP.48'' STM. PR O P . 30 ' ' S T M . SYSTEM 'D'165.5 ACRES SYSTEM 'A'67.6 ACRES SYSTEM 'B'27.9 ACRES SYSTEM 'C'27.2 ACRES SUBMITTED: SCALE: 1" = 400' DATE: 4/18/11 SURVEY BY: F B NO: DESIGNED BY: CA DRAWN BY: CE SHEET No.: 1 OF 1 DWG. NO: LEGEND PROPOSED DRAINAGE AREA EXISTING STORM SEWER PROPOSED STORM SEWER HCFCD CHANNELS PROP.48" STM. PR O P . 30 " S T M . FLOW DIRECTION EXHIBIT 5 13430 Northwest Freeway, Suite 1100Houston, Texas 77040713.462.3242 | fax 713.462.3262 | www.cobfen.comJOB NO. 1012056 Texas Registration No. 274 CONCRETE STREET PROGRAM STUDY CITY OF LAPORTE LAPORTE, TEXAS TX-146 S S BROADWAY ST S BROADWAY ST W F A I R M O N T P K Y S 1ST ST S 6TH ST W I S T W F S T W H S T S 5TH ST W G S T S 7TH ST W M A I N S T S 8TH ST S 2ND ST S 3RD ST S 4TH ST S 1ST ST S 2ND ST S 3RD ST S 4TH ST S 5TH ST W C S T W B S T W D S T W E S T W A S T S 6TH ST S 7TH ST S 8TH ST JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 CONCRETE PAVING LEGEND EXISTING CONC. STREETS CONCRETE STREET PROGRAM STUDY EXISTING CONCRETE STREET PLAN EXHIBIT 6 TX-146 S S BROADWAY ST S BROADWAY ST W F A I R M O N T P K Y W I S T S 7TH ST W F S T S 6TH ST S 8TH ST W H S T S 5TH ST W G S T W M A I N S T S 1ST ST S 2ND ST S 3RD ST S 4TH ST S 1ST ST S 2ND ST S 3RD ST S 4TH ST S 5TH ST W C S T W B S T W D S T W E S T W A S T S 6TH ST S 7TH ST S 8TH ST JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 ZONING LEGEND (R-1) LOW DENSITY RESIDENTIAL (183.10 ACRES) (GC) GENERAL COMMERCIAL (114.86 ACRES) (MS,MSO) MAIN STREET & MAIN STREET OVERLAY (35.60 ACRES) LAND USE MAP & PARKING PROVISIONS ZONED USE PARKING PROVISIONS (R-1) LOW DENSITY RESIDENTIAL 3,700 SY (20 SY/AC) (GC) GENERAL COMMERCIAL 6,400 SY (55 SY/AC) (MS,MSO) MAIN STREET & MAIN STREET OVERLAY 2,900SY (80SY/AC) NOTE: THE QUANTITIES PROVIDED ARE BASED SOLELY ON THE EXISTING CONDITIONS ROUNDED TO NEAREST 100 SY AND HAVE BEEN USED IN THE COST ESTIMATE FOR BUDGET PLANNING PURPOSES. CONCRETE STREET PROGRAM STUDY EXHIBIT 7 W F A I R M O N T P K W Y W F A I R M O N T P K W Y W F A I R M O N T P K W Y W F A I R M O N T P K W Y W F A I R M O N T P K W Y S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST W C S T W C S T W C S T W C S T W C S T W B S T W B S T W B S T W B S T W B S T W A S T W A S T W A S T W A S T W A S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST S SH 146S SH 146S SH 146S SH 146S SH 146 W E S T W E S T W E S T W E S T W E S T W D S T W D S T W D S T W D S T W D S T W G S T W G S T W G S T W G S T W G S T W F S T W F S T W F S T W F S T W F S T W I S T W I S T W I S T W I S T W I S T W H S T W H S T W H S T W H S T W H S T JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 CONCRETE PAVING LEGEND 36 FT. WIDE WITH (2) 8' SIDEWALKS 36 FT. WIDE WITH (1) 8' SIDEWALK (1) 10' SIDEWALK 28 FT. WIDE WITH (2) 5' SIDEWALKS CONCRETE STREET PROGRAM STUDY PROPOSED CONCRETE STREET PAVING PLAN NOTES: 1. PAVEMENT THICKNESS SHALL BE 7 INCH MIN. FOR 36 FT. WIDE PAVEMENT AND 6 INCH MIN. FOR 28 FT. WIDE PAVEMENT. 2. ALL ROADSIDE PARKING AREA FOR MULTI-FAMILY AND COMMERCIAL USES SHALL BE ACCOMMODATED FOR AS EACH PHASE IS PREPARED FOR CONSTRUCTION. 3.THE ROW WIDTH IS 80 FT. FOR "B", "D", "F", "H", "3RD", AND "8TH" STREET. THE ROW WIDTH FOR ALL OTHER STREETS IS 60 FT. EXHIBIT 8 PAVEMENT REDUCTION AREA TX-146 STX-146 STX-146 STX-146 STX-146 S S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST W I S T W I S T W I S T W I S T W I S T W F S T W F S T W F S T W F S T W F S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST W H S T W H S T W H S T W H S T W H S T S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W G S T W G S T W G S T W G S T W G S T S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST W M A I N S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W C S T W C S T W C S T W C S T W C S T W B S T W B S T W B S T W B S T W B S T W D S T W D S T W D S T W D S T W D S T W E S T W E S T W E S T W E S T W E S T W A S T W A S T W A S T W A S T W A S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 LEGEND 12 FT. WIDE STREET WITH (2) 5' SIDEWALK PROPOSED DIRECTION FOR STREET TRAFFIC PAVEMENT REDUCTION PLAN OPTION "A", ONE-WAY NOTES: 1.PAVEMENT REDUCTION OPTION "A" CONSISTS OF CONSTRUCTING (4) ONE-WAY STREETS TO INCLUDE: STREETS "C", "D", "E", AND "F" BETWEEN 3RD AND 8TH STREET. THE PROPOSED STREETS FOR THIS OPTION ARE TO BE 12 FT. WIDE, 6 INCH THICK, CURBLESS, AND ROUGH-GRADED BEYOND THE EDGE OF PAVEMENT IN A MANNER SIMILAR TO THE EXISTING CONDITIONS TO ALLOW AMPLE SHOULDER PARKING. CONCRETE STREET PROGRAM STUDY EXHIBIT 9 PAVEMENT REDUCTION AREA MID-BLOCK BOLLARDS BOLLARDS (TYP.) TX-146 S S BROADWAY ST W F A I R M O N T P K Y S BROADWAY ST W I S T W F S T S 6TH ST W H S T S 5TH ST W G S T S 7TH ST W M A I N S T S 1ST ST S 1ST ST S 2ND ST S 2ND ST S 3RD ST S 3RD ST S 4TH ST S 4TH ST S 5TH ST W C S T W B S T W D S T W E S T W A S T S 6TH ST S 7TH ST S 8TH ST S 8TH ST JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 LEGEND 28 FT. WIDE STREET WITH (2) 5' SIDEWALKS 20 FT. WIDE CONCRETE STREET OR DRIVABLE GRASS (see APPENDIX B) WITH (2) 5' SIDEWALK GRASS STREET AREA (NO EXISTING RESIDENTIAL DRIVES) MID-BLOCK BOLLARDS PAVEMENT REDUCTION PLAN OPTION "B", MID-BLOCK BOLLARDS NOTES: 1. PAVEMENT REDUCTION OPTION "B" CONSISTS OF CONSTRUCTING MID-BLOCK BOLLARDS TO PROHIBIT THRU TRAFFIC ON THE FOLLOWING STREETS: "C", "D", "E", AND "F" BETWEEN 3RD AND 8TH STREET WITH THE EXCEPTIONS OF THE BLOCKS ON "D" AND "E" STREET BETWEEN 7TH AND 8TH STREETS. THE PROPOSED STREETS FOR THIS OPTION ARE TO BE 20 FT. WIDE, 6 INCH THICK, CURBLESS, AND ROUGH-GRADED BEYOND THE EDGE OF PAVEMENT IN A MANNER SIMILAR TO THE EXISTING CONDITIONS TO ALLOW AMPLE SHOULDER PARKING AND TWO-WAY TRAFFIC. CONCRETE STREET PROGRAM STUDY EXHIBIT 10 TX-146 STX-146 STX-146 STX-146 STX-146 S S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W I S T W I S T W I S T W I S T W I S T S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST W F S T W F S T W F S T W F S T W F S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST W H S T W H S T W H S T W H S T W H S T S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W G S T W G S T W G S T W G S T W G S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W C S T W C S T W C S T W C S T W C S T W B S T W B S T W B S T W B S T W B S T W D S T W D S T W D S T W D S T W D S T W E S T W E S T W E S T W E S T W E S T W A S T W A S T W A S T W A S T W A S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST FLOWLINE ELEV. = 2.80' PVMT. CL. ELEV. = 18.5' PVMT. CL. ELEV. = 12.35' PVMT. CL. ELEV. = 18.0' FLOWLINE ELEV. = 6.09' FLOWLINE ELEV. = 3.91' PVMT. CL. ELEV. = 12.38' PVMT. CL. ELEV. = 12.52' PVMT. CL. ELEV. = 13.5' PVMT. CL. ELEV. = 12.40' PVMT. CL. ELEV. = 14.3' PVMT. CL. ELEV. = 20.3' JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 PROPOSED OVERLAND RELIEF DIRECTIONAL FLOW MAP LEGEND EXISTING STORM SEWER PROPOSED STORM SEWER OVERLAND RELIEF FLOW DIRECTION 1. DURING DESIGN OF INDIVIDUAL PHASES, THE DESIGN ELEVATIONS REQUIRED TO PROVIDE DIRECTIONAL OVERLAND RELIEF DURING LARGE STORM EVENTS SHOULD BE IN GENERAL CONFORMANCE WITH THE SCHEMATIC DESIGNS PER THIS MAP. 2. THE PROPOSED CENTERLINE ELEVATIONS SHOWN ARE BASED ON GIS INFORMATION AND ILLUSTRATE THE MINIMUM ELEVATION DIFFERENCES REQUIRED TO MAINTAIN THE SCHEMATIC DESIGN. RELIEF FLOW NOTES: CONCRETE STREET PROGRAM STUDY EXHIBIT 11 PHASE 1 PHASE 2 PHASE 3 PHASE 3PHASE 4 PHASE 4 PHASE 5 PHASE 5 PHASE 8 PHASE 8 PHASE 6 PHASE 9 PHASE 9 PHASE 9 PHASE 9 PHASE 7 PHASE 7 PHASE 10 PHASE 10 PHASE 10 PHASE 10 PHASE 2 PHASE 6 PHASE 6 RFA RFA RFA RFA TX-146 STX-146 STX-146 STX-146 STX-146 S S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y SAN J A C I N T O A V E SAN J A C I N T O A V E SAN J A C I N T O A V E SAN J A C I N T O A V E SAN J A C I N T O A V E W I S T W I S T W I S T W I S T W I S T S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST W F S T W F S T W F S T W F S T W F S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST W H S T W H S T W H S T W H S T W H S T S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W G S T W G S T W G S T W G S T W G S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W C S T W C S T W C S T W C S T W C S T W B S T W B S T W B S T W B S T W B S T W D S T W D S T W D S T W D S T W D S T W E S T W E S T W E S T W E S T W E S T W A S T W A S T W A S T W A S T W A S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 PHASING PLAN PHASES 1 TO 10 CONCRETE STREET PROGRAM STUDY 1. THE PRIMARY OUTFALLS ON 3RD STREET AND H STREET SHOULD BE CONSTRUCTED IN THE FIRST TWO PHASES. 2. THE PROPOSED PHASING GIVES CONSIDERATION TO THE NEED TO RELIEVE DRAINAGE ISSUES IN THE (4) REPETITIVE FLOODING AREAS RFA AS IDENTIFIED VIA CITY OFFICIALS AND MARKED PER THIS MAP. THEREFORE, THE PAVING AND DRAINAGE IMPROVEMENTS FOR THESE AREAS ARE PLANNED FOR THE FIRST (10) PHASES AND SPECIFICALLY FOR PHASES 3, 6,7, 9, AND 10. PHASING NOTES: EXHIBIT 12 CONSTRUCTION PHASING LEGEND PHASE 1 PHASE 2 PHASE 3 PHASE 4 PHASE 5 PHASE 6 PHASE 7 PHASE 8 PHASE 9 PHASE 10 PHASE 11-END PHASE 11-END TX-146 STX-146 STX-146 STX-146 STX-146 S S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W I S T W I S T W I S T W I S T W I S T S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST W F S T W F S T W F S T W F S T W F S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST W H S T W H S T W H S T W H S T W H S T S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W G S T W G S T W G S T W G S T W G S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W C S T W C S T W C S T W C S T W C S T W B S T W B S T W B S T W B S T W B S T W D S T W D S T W D S T W D S T W D S T W E S T W E S T W E S T W E S T W E S T W A S T W A S T W A S T W A S T W A S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 PHASING PLAN PHASES 11 TO END 1. PHASES 11 - END IF PERFORMED IN PHASES THAT COST APPROXIMATELY $1.5 MILLION PER PHASE WILL LIKELY REQUIRE 15-20 ADDITIONAL PHASES TO ACHIEVE PROJECT COMPLETION. 2. FOR PLANNING PURPOSES, THE PHASES CAN GENERALLY BE DESCRIBED AS FULL-WIDTH ROADWAY CONSTRUCTION WITHIN THE RIGHT-OF-WAY THAT CONSISTS OF 5-6 BLOCKS IN THE NORTH/SOUTH DIRECTION OR 7-8 BLOCKS IN THE EAST/WEST DIRECTION. PHASING NOTES: CONCRETE STREET PROGRAM STUDY EXHIBIT 13 CONSTRUCTION PHASING LEGEND PHASE 11 TO END HCFCD F216-04-00HCFCD F216-04-00HCFCD F216-04-00HCFCD F216-04-00HCFCD F216-04-00 HCFC D F 2 1 6 - 0 0 - 0 0 HCFC D F 2 1 6 - 0 0 - 0 0 HCFC D F 2 1 6 - 0 0 - 0 0 HCFC D F 2 1 6 - 0 0 - 0 0 HCFC D F 2 1 6 - 0 0 - 0 0 HCFCD F216-00-00HCFCD F216-00-00HCFCD F216-00-00HCFCD F216-00-00HCFCD F216-00-00 HCF C D F 2 1 6 - 0 0 - 0 0 HCF C D F 2 1 6 - 0 0 - 0 0 HCFC D F 2 1 6 - 0 0 - 0 0 HCFC D F 2 1 6 - 0 0 - 0 0 HCF C D F 2 1 6 - 0 0 - 0 0 TX-146 STX-146 STX-146 STX-146 STX-146 S S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST S BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY STS BROADWAY ST TX-146TX-146TX-146TX-146TX-146 TX-146TX-146TX-146TX-146TX-146 TX-146 STX-146 STX-146 STX-146 STX-146 S W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W F A I R M O N T P K Y W I S T W I S T W I S T W I S T W I S T S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST W F S T W F S T W F S T W F S T W F S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST W H S T W H S T W H S T W H S T W H S T S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W G S T W G S T W G S T W G S T W G S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T W M A I N S T S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 1ST STS 1ST STS 1ST STS 1ST STS 1ST ST S 2ND STS 2ND STS 2ND STS 2ND STS 2ND ST S 3RD STS 3RD STS 3RD STS 3RD STS 3RD ST S 4TH STS 4TH STS 4TH STS 4TH STS 4TH ST S 5TH STS 5TH STS 5TH STS 5TH STS 5TH ST W C S T W C S T W C S T W C S T W C S T W B S T W B S T W B S T W B S T W B S T W D S T W D S T W D S T W D S T W D S T W E S T W E S T W E S T W E S T W E S T W A S T W A S T W A S T W A S T W A S T S 6TH STS 6TH STS 6TH STS 6TH STS 6TH ST S 7TH STS 7TH STS 7TH STS 7TH STS 7TH ST S 8TH STS 8TH STS 8TH STS 8TH STS 8TH ST SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 1 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . SA N . S W R . 8 I N . PROP. 120'' STM.PROP. 120'' STM.PROP. 120'' STM.PROP. 120'' STM.PROP. 120'' STM. PROP. 108'' STM.PROP. 108'' STM.PROP. 108'' STM.PROP. 108'' STM.PROP. 108'' STM. PROP. 108'' STM.PROP. 108'' STM.PROP. 108'' STM.PROP. 108'' STM.PROP. 108'' STM. PROP. 96'' STM.PROP. 96'' STM.PROP. 96'' STM.PROP. 96'' STM.PROP. 96'' STM. PROP. 96'' STM.PROP. 96'' STM.PROP. 96'' STM.PROP. 96'' STM.PROP. 96'' STM. PROP. 84'' STM.PROP. 84'' STM.PROP. 84'' STM.PROP. 84'' STM.PROP. 84'' STM. PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM.PROP. 72'' STM. PROP. 48'' STM.PROP. 48'' STM.PROP. 48'' STM.PROP. 48'' STM.PROP. 48'' STM. PHASE 3 POTENTIAL CONFLICT PHASE 1 POTENTIAL CONFLICT PHASE 4 POTENTIAL CONFLICT JOB NO. 13430 Northwest Freeway, Suite 1100 Houston, Texas 77040 713.462.3242 | fax 713.462.3262 | www.cobfen.com Texas Registration No. 274 CITY OF LAPORTE LAPORTE, TEXAS 1012056 PROPOSED 3RD STREET TRUNK SEWER & POTENTIAL CONFLICTS STORM & UTILITY LEGEND EXISTING SANITARY SEWER PROPOSED STORM SEWER HARRIS COUNTY FLOOD CONTROL CHANNEL CONCRETE STREET PROGRAM STUDY EXHIBIT 14 City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 APPENDIX “A” – PROJECT COST ESTIMATES Client: City of LaPorte Project Name: Concrete Street Program Study Date: 7/7/2011 Cost Estimate 1 - Overall Construction, Engineering, Surveying, and Contingencies Item No.Item DescriptionUnitQuantityUnit PriceExtended Price BASE BID ITEMS: For 639 STA. of Roadway 1MobilizationLS1 $ 1,278,000.00 1,278,000.00$ 2Traffic Control and RegulationsLS1 $ 639,000.00 639,000.00$ 3Remove and Replace all signageLS1 $ 223,650.00 223,650.00$ 4Clearing and Grubbing LS1 $ 191,700.00 191,700.00$ 5SWPPP ProtectionLS1 $ 127,800.00 127,800.00$ 6SoddingSY224,000 $ 3.50 784,000.00$ 3,244,150.00$ 7Roadway ExcavationSTA 639 $ 1,800.00 1,150,200.00$ 8 7” Reinforced Concrete Pavement, complete-in-place SY84,000 $ 45.00 3,780,000.00$ 9 6” Reinforced Concrete Pavement, complete-in- place SY135,200 $ 35.00 4,732,000.00$ 96” Lime Stabilized Subgrade SY249,000 $ 2.50 622,500.00$ 106” Reinforced Concrete CurbLF127,800 $ 3.00 383,400.00$ 11Lime (8%) TON5,400 $ 160.00 864,000.00$ 127 ” Reinforced Concrete DrivewaysSY10,000 $ 47.00 470,000.00$ 136 ” Reinforced Concrete DrivewaysSY41,100 $ 37.00 1,520,700.00$ 14 Adjust Existing Inlets, Manholes, and Valve Boxes to GradeLS1 $ 95,850.00 95,850.00$ 154" Concrete Sidewalk, complete-in-place SF544,000 $ 4.50 2,448,000.00$ 16Curb Ramps, complete-in-place EA 340 $ 1,500.00 510,000.00$ 17 5" Concrete Trail (8 or 10 ft wide, Complete-in- Place SF95,000 $ 5.00 475,000.00$ 18 Parking Off-Street, 6" Concrete Pavement, 6" Curb, and 6" Sub-grade, complete-in-placeSY13,000 $ 42.00 546,000.00$ 17,597,650.00$ 19 Remove and Dispose of Pavement, Street, Drives, and Sidewalk, All Thicknesses (02221)SY162,900 $ 4.00 651,600.00$ 20 Remove and Dispose of Storm Sewer - pipe size 15" and less LF3,200 $ 8.00 25,600.00$ 21 Remove and Dispose of Storm Sewer - pipe size 18" LF9,300 $ 10.00 93,000.00$ 22 Remove and Dispose of Storm Sewer - pipe size 24" LF15,600 $ 12.00 187,200.00$ 23 Remove and Dispose of Storm Sewer - pipe size 30"-42"LF5,600 $ 14.00 78,400.00$ PAVING DEMOLITION OVERALL PROJECT GENERAL ITEM SUBTOTAL PAVING ITEM SUBTOTAL GENERAL 1,035,800.00$ 23 Inlets and Manholes (Conc.) - All types and depthsEA980 $ 2,600.00 2,548,000.00$ 2312" Drain BasinsEA 960 $ 675.00 648,000.00$ 248" PVC Storm SewerLF35,200 $ 20.00 704,000.00$ 2524" Storm SewerLF24,200 $ 55.00 1,331,000.00$ 2630" Storm SewerLF4,400 $ 70.00 308,000.00$ 2736" Storm SewerLF8,500 $ 80.00 680,000.00$ 2842" Storm SewerLF1,800 $ 90.00 162,000.00$ 2948" Storm SewerLF2,100 $ 100.00 210,000.00$ 3054" Storm SewerLF600 $ 150.00 90,000.00$ 3160" Storm SewerLF1,400 $ 210.00 294,000.00$ 3266" Storm SewerLF100 $ 260.00 26,000.00$ 3372" Storm SewerLF1,000 $ 300.00 300,000.00$ 3478" Storm SewerLF100 $ 325.00 32,500.00$ 3584" Storm SewerLF500 $ 425.00 212,500.00$ 3696" Storm SewerLF1,000 $ 450.00 450,000.00$ 37108" Storm SewerLF1,000 $ 475.00 475,000.00$ 38114" Storm SewerLF700 $ 500.00 350,000.00$ 39 Channel Improvements Downstream of 3rd Street Outfall (Weir or culvert, and etc.)LS1 $ 250,000.00 250,000.00$ 9,071,000.00$ 40General Utility AdjustmentsLS1 $ 400,000.00 400,000.00$ 400,000.00$ 31,348,600.00$ 1Surveying LS1 $ 515,000.00 515,000.00$ 2 Engineering(Design and Construction including Geo-tech)LS1 $ 4,150,000.00 4,150,000.00$ 3Contingencies (20%)LS1 $ 6,269,720.00 6,269,720.00$ 10,934,720.00$ 42,283,320.00$ Engineering, Surveying, and Contingencies Engineering, Surveying, and Contingency Item Subtotal MISC UTILITY ITEM SUBTOTAL BASE BID ITEM SUBTOTAL STORM SEWER ITEM SUBTOTAL DEMOLITION ITEM SUBTOTAL ESTIMATED TOTAL COST STORM SEWER MISC. UTILITY ITEM SUBTOTAL D:\cfa\2010\12056.la_porte_concrete\ENG\HEATH\Cost Estimate_7-5-11.xls 1 of 1 Cl i e n t : C i t y o f L a P o r t e P r o j e c t N a m e : Co n c r e t e S t r e e t P r o g r a m S t u d y D a t e : 7/ 7 / 2 0 1 1 Co s t E s t i m a t e 2 - O v e r a l l C o n s t r u c t i o n a n d P h a s e s 1 - 1 0 It e m No . Ite m D e s c r i p t i o n U n i t Q u a n t i t y U n i t P r i c e E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E xtended Price BA S E B I D I T E M S : F o r 6 3 9 S T A . o f R o a d w a y O v e r a l l P r o j e c t 1 M o b i l i z a t i o n L S 1 $ 1 , 2 7 8 , 0 0 0 . 0 0 1 , 2 7 8 , 0 0 0 . 0 0 $ 1 2 0 0 , 0 0 0 . 0 0 $ 1 3 6 , 0 0 0 . 0 0 $ 1 3 8 , 0 0 0 . 0 0 $ 1 37,000.00$ 2 T r a f f i c C o n t r o l a n d R e g u l a t i o n s L S 1 $ 6 3 9 , 0 0 0 . 0 0 6 3 9 , 0 0 0 . 0 0 $ 1 7 5 , 0 0 0 . 0 0 $ 1 1 8 , 0 0 0 . 0 0 $ 1 1 9 , 0 0 0 . 0 0 $ 1 18,500.00$ 3 R e m o v e a n d R e p l a c e a l l s i g n a g e L S 1 $ 2 2 3 , 6 5 0 . 0 0 2 2 3 , 6 5 0 . 0 0 $ 1 3 , 5 0 0 . 0 0 $ 1 6 , 3 0 0 . 0 0 $ 1 6 , 6 5 0 . 0 0 $ 1 6,475.00$ 4 C l e a r i n g a n d G r u b b i n g L S 1 $ 1 9 1 , 7 0 0 . 0 0 1 9 1 , 7 0 0 . 0 0 $ 1 3 , 0 0 0 . 0 0 $ 1 5 , 4 0 0 . 0 0 $ 1 5 , 7 0 0 . 0 0 $ 1 5,550.00$ 5 S W P P P P r o t e c t i o n L S 1 $ 1 2 7 , 8 0 0 . 0 0 1 2 7 , 8 0 0 . 0 0 $ 1 2 , 0 0 0 . 0 0 $ 1 3 , 6 0 0 . 0 0 $ 1 3 , 8 0 0 . 0 0 $ 1 3,700.00$ 6 S o d d i n g S Y 2 2 4 , 0 0 0 $ 3 . 5 0 7 8 4 , 0 0 0 . 0 0 $ 3 , 5 0 0 1 2 , 2 5 0 . 0 0 $ 6 , 3 0 0 2 2 , 0 5 0 . 0 0 $ 6 , 6 5 0 2 3 , 2 7 5 . 0 0 $ 6,475 22,662.50$ GE N E R A L P H A S E 1 P H A S E 2 OV E R A L L P R O J E C T (C o n s t r u c t i o n o n l y ) PHASE 3 PHASE 4 GS O 3,2 4 4 , 1 5 0 . 0 0 $ 2 9 5 , 7 5 0 . 0 0 $ 9 1 , 3 5 0 . 0 0 $ 9 6 , 4 2 5 . 0 0 $ 93,887.50$ 7 R o a d w a y E x c a v a t i o n S T A 6 3 9 $ 1 , 8 0 0 . 0 0 1 , 1 5 0 , 2 0 0 . 0 0 $ 1 0 1 8 , 0 0 0 . 0 0 $ 1 8 3 2 , 4 0 0 . 0 0 $ 1 9 3 4 , 2 0 0 . 0 0 $ 19 33,300.00$ 8 7” R e i n f o r c e d C o n c r e t e P a v e m e n t , c o m p l e t e - i n - pla c e S Y 8 4 , 0 0 0 $ 4 5 . 0 0 3 , 7 8 0 , 0 0 0 . 0 0 $ 4 , 0 0 0 1 8 0 , 0 0 0 . 0 0 $ 7 , 2 0 0 3 2 4 , 0 0 0 . 0 0 $ 7 , 6 0 0 3 4 2 , 0 0 0 . 0 0 $ 7,400 333,000.00$ 9 6” R e i n f o r c e d C o n c r e t e P a v e m e n t , c o m p l e t e - i n - pla c e S Y 1 3 5 , 2 0 0 $ 3 5 . 0 0 4 , 7 3 2 , 0 0 0 . 0 0 $ 2 , 0 0 0 7 0 , 0 0 0 . 0 0 $ 3 , 6 0 0 1 2 6 , 0 0 0 . 0 0 $ 3 , 8 0 0 1 3 3 , 0 0 0 . 0 0 $ 3,700 129,500.00$ 9 6 ” L i m e S t a b i l i z e d S u b g r ad e S Y 2 4 9 , 0 0 0 $ 2 . 5 0 6 2 2 , 5 0 0 . 0 0 $ 4 , 5 0 0 1 1 , 2 5 0 . 0 0 $ 8 , 1 0 0 2 0 , 2 5 0 . 0 0 $ 8 , 5 5 0 2 1 , 3 7 5 . 0 0 $ 8,325 20,812.50$ 10 6 ” R e i n f o r c e d C o n c r e t e C u r b L F 1 2 7 , 8 0 0 $ 3 . 0 0 3 8 3 , 4 0 0 . 0 0 $ 1 , 6 6 7 5 , 0 0 0 . 0 0 $ 3 , 0 0 0 9 , 0 0 0 . 0 0 $ 3 , 1 6 7 9 , 5 0 0 . 0 0 $ 3,083 9,250.00$ 11 L i m e ( 8 % ) T O N 5 , 4 0 0 $ 1 6 0 . 0 0 8 6 4 , 0 0 0 . 0 0 $ 1 0 0 1 6 , 0 0 0 . 0 0 $ 1 8 0 2 8 , 8 0 0 . 0 0 $ 1 9 0 3 0 , 4 0 0 . 0 0 $ 185 29,600.00$ 12 7 ” R e i n f o r c e d C o n c r e t e D r i v e w a y s S Y 1 0 , 0 0 0 $ 4 7 . 0 0 4 7 0 , 0 0 0 . 0 0 $ 1 6 0 7 , 5 2 0 . 0 0 $ 2 8 8 1 3 , 5 3 6 . 0 0 $ 3 0 4 1 4 , 2 8 8 . 0 0 $ 296 13,912.00$ 13 6 ” R e i n f o r c e d C o n c r e t e D r i v e w a y s S Y 4 1 , 1 0 0 $ 3 7 . 0 0 1 , 5 2 0 , 7 0 0 . 0 0 $ 6 5 0 2 4 , 0 5 0 . 0 0 $ 1 , 1 7 0 4 3 , 2 9 0 . 0 0 $ 1 , 2 3 5 4 5 , 6 9 5 . 0 0 $ 1,203 44,492.50$ 14 Ad j u s t E x i s t i n g I n l e t s , M a n h o l e s , a n d V a l v e Bo x e s t o G r a d e L S 1 $ 9 5 , 8 5 0 . 0 0 9 5 , 8 5 0 . 0 0 $ 1 1 , 5 0 0 . 0 0 $ 1 2 , 7 0 0 . 0 0 $ 1 2 , 8 5 0 . 0 0 $ 1 2,775.00$ 15 4 " C o n c r e t e S i d e w a l k , c o m p l e t e - i n - p l a c e S F 5 4 4 , 0 0 0 $ 4 . 5 0 2 , 4 4 8 , 0 0 0 . 0 0 $ 8 , 5 0 0 3 8 , 2 5 0 . 0 0 $ 1 5 , 3 0 0 6 8 , 8 5 0 . 0 0 $ 1 6 , 1 5 0 7 2 , 6 7 5 . 0 0 $ 15,725 70,762.50$ 16 C u r b R a m p s , c o m p l e t e - i n - p l a c e E A 3 4 0 $ 1 , 5 0 0 . 0 0 5 1 0 , 0 0 0 . 0 0 $ 5 7 , 5 0 0 . 0 0 $ 9 1 3 , 5 0 0 . 0 0 $ 1 0 1 4 , 2 5 0 . 0 0 $ 9 13,875.00$ 17 5" C o n c r e t e T r a i l ( 8 o r 1 0 f t w i d e , C o m p l e t e - i n - Pla c e S F 9 5 , 0 0 0 $ 5 . 0 0 4 7 5 , 0 0 0 . 0 0 $ 1 , 5 0 0 6 3 , 0 0 0 . 0 0 $ 2 , 7 0 0 1 1 3 , 4 0 0 . 0 0 $ 2 , 8 5 0 1 1 9 , 7 0 0 . 0 0 $ 2,775 116,550.00$ 18 Pa r k i n g O f f - S t r e e t , 6 " C o n c r e t e P a v e m e n t , 6 " Cu r b , a n d 6 " S u b - g r a d e , c o m p l e t e - i n - p l a c e S Y 1 3 , 0 0 0 $ 4 2 . 0 0 5 4 6 , 0 0 0 . 0 0 $ 2 0 0 8 , 4 0 0 . 0 0 $ 3 6 0 1 5 , 1 2 0 . 0 0 $ 3 8 0 1 5 , 9 6 0 . 0 0 $ 370 15,540.00$ 17 , 5 9 7 , 6 5 0 . 0 0 $ 4 5 0 , 4 7 0 . 0 0 $ 8 1 0 , 8 4 6 . 0 0 $ 8 5 5 , 8 9 3 . 0 0 $ 833,369.50$ PA V I N G I T E M S U B T O T A L DE M O L I T I O N GE N E R A L I T E M S U B T O T A L PA V I N G 19 Re m o v e a n d D i s p o s e o f P a v e m e n t , S t r e e t , Dr i v e s , a n d S i d e w a l k , A l l T h i c k n e s s e s ( 0 2 2 2 1 ) S Y 1 6 2 , 9 0 0 $ 4 . 0 0 6 5 1 , 6 0 0 . 0 0 $ 2 , 6 0 0 1 0 , 4 0 0 . 0 0 $ 4 , 6 8 0 1 8 , 7 2 0 . 0 0 $ 4 , 9 4 0 1 9 , 7 6 0 . 0 0 $ 4,810 19,240.00$ 20 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 15 " a n d l e s s L F 3 , 2 0 0 $ 8 . 0 0 2 5 , 6 0 0 . 0 0 $ 2 0 1 6 0 . 0 0 $ 2 0 1 6 0 . 0 0 $ 2 0 1 6 0 . 0 0 $ 20 160.00$ 21 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 18 " L F 9 , 3 0 0 $ 1 0 . 0 0 9 3 , 0 0 0 . 0 0 $ 6 0 6 0 0 . 0 0 $ 6 0 6 0 0 . 0 0 $ 6 0 6 0 0 . 0 0 $ 60 600.00$ 22 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 24 " L F 1 5 , 6 0 0 $ 1 2 . 0 0 1 8 7 , 2 0 0 . 0 0 $ 1 2 0 1 , 4 4 0 . 0 0 $ 1 2 0 1 , 4 4 0 . 0 0 $ 1 2 0 1 , 4 4 0 . 0 0 $ 120 1,440.00$ 23 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 30 " - 4 2 " L F 5 , 6 0 0 $ 1 4 . 0 0 7 8 , 4 0 0 . 0 0 $ 4 0 5 6 0 . 0 0 $ 4 0 5 6 0 . 0 0 $ 4 0 5 6 0 . 0 0 $ 40 560.00$ 1, 0 3 5 , 8 0 0 . 0 0 $ 1 3 , 1 6 0 . 0 0 $ 2 1 , 4 8 0 . 0 0 $ 2 2 , 5 2 0 . 0 0 $ 22,000.00$ 23 In l e t s a n d M a n h o l e s ( C o n c . ) - A l l t y p e s a n d de p t h s E A 9 8 0 $ 2 , 6 0 0 . 0 0 2 , 5 4 8 , 0 0 0 . 0 0 $ 2 0 5 2 , 0 0 0 . 0 0 $ 3 6 9 3 , 6 0 0 . 0 0 $ 3 8 9 8 , 8 0 0 . 0 0 $ 37 96,200.00$ 23 1 2 " D r a i n B a s i n s E A 9 6 0 $ 6 7 5 . 0 0 6 4 8 , 0 0 0 . 0 0 $ 2 0 1 3 , 5 0 0 . 0 0 $ 3 6 2 4 , 3 0 0 . 0 0 $ 3 8 2 5 , 6 5 0 . 0 0 $ 37 24,975.00$ 24 8 " P V C S t o r m S e w e r L F 3 5 , 2 0 0 $ 2 0 . 0 0 7 0 4 , 0 0 0 . 0 0 $ 5 5 0 1 1 , 0 0 0 . 0 0 $ 9 9 0 1 9 , 8 0 0 . 0 0 $ 1 , 0 4 5 2 0 , 9 0 0 . 0 0 $ 1,018 20,350.00$ 25 2 4 " S t o r m S e w e r L F 2 4 , 2 0 0 $ 5 5 . 0 0 1 , 3 3 1 , 0 0 0 . 0 0 $ 3 8 0 2 0 , 9 0 0 . 0 0 $ 6 8 4 3 7 , 6 2 0 . 0 0 $ 7 2 2 3 9 , 7 1 0 . 0 0 $ 703 38,665.00$ 26 3 0 " S t o r m S e w e r L F 4 , 4 0 0 $ 7 0 . 0 0 3 0 8 , 0 0 0 . 0 0 $ 0 - $ 8 0 0 5 6 , 0 0 0 . 0 0 $ 0 - $ 0 -$ 27 3 6 " S t o r m S e w e r L F 8 , 5 0 0 $ 8 0 . 0 0 6 8 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 28 4 2 " S t o r m S e w e r L F 1 , 8 0 0 $ 9 0 . 0 0 1 6 2 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 29 4 8 " S t o r m S e w e r L F 2 , 1 0 0 $ 1 0 0 . 0 0 2 1 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 475 47,500.00$ 30 5 4 " S t o r m S e w e r L F 6 0 0 $ 1 5 0 . 0 0 9 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 31 60 " S t S LF 1 4 0 0 $ 2 1 0 0 0 29 4 0 0 0 0 0 $ 0 $ 47 5 26 1 2 5 0 0 $ 0$0$ DE M O L I T I O N I T E M S U B T O T A L ST O R M S E W E R 31 60 " St or m Sew e r LF 1,40 0 $ 2 1 0 . 0 0 2 9 4 , 0 0 0 . 0 0 $ 0 - $ 4 7 5 2 6 , 1 2 5 . 0 0 $ 0 - $ 0 -$ 32 6 6 " S t o r m S e w e r L F 1 0 0 $ 2 6 0 . 0 0 2 6 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 33 7 2 " S t o r m S e w e r L F 1 , 0 0 0 $ 3 0 0 . 0 0 3 0 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 950 285,000.00$ 34 7 8 " S t o r m S e w e r L F 1 0 0 $ 3 2 5 . 0 0 3 2 , 5 0 0 . 0 0 $ 0 - $ 7 0 0 2 2 7 , 5 0 0 . 0 0 $ 0 - $ 0 -$ 35 8 4 " S t o r m S e w e r L F 5 0 0 $ 4 2 5 . 0 0 2 1 2 , 5 0 0 . 0 0 $ 0 - $ 0 - $ 4 7 5 4 7 , 5 0 0 . 0 0 $ 0 -$ 36 9 6 " S t o r m S e w e r L F 1 , 0 0 0 $ 4 5 0 . 0 0 4 5 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 9 5 0 1 4 2 , 5 0 0 . 0 0 $ 0 -$ 37 1 0 8 " S t o r m S e w e r L F 1 , 0 0 0 $ 4 7 5 . 0 0 4 7 5 , 0 0 0 . 0 0 $ 4 7 5 4 7 , 5 0 0 . 0 0 $ 0 - $ 4 7 5 4 7 , 5 0 0 . 0 0 $ 0 -$ 38 1 1 4 " S t o r m S e w e r L F 7 0 0 $ 5 0 0 . 0 0 3 5 0 , 0 0 0 . 0 0 $ 6 5 0 9 7 , 5 0 0 . 0 0 $ 0 - $ 0 - $ 0 -$ 39 Ch a n n e l I m p r o v e m e n t s D o w n s t r e a m o f 3 r d Str e e t O u t f a l l ( W e i r o r c u l v e r t , a n d e t c . ) L S 1 $ 2 5 0 , 0 0 0 . 0 0 2 5 0 , 0 0 0 . 0 0 $ 1 2 5 0 , 0 0 0 . 0 0 $ 0 0 0 9, 0 7 1 , 0 0 0 . 0 0 $ 4 9 2 , 4 0 0 . 0 0 $ 4 8 4 , 9 4 5 . 0 0 $ 4 2 2 , 5 6 0 . 0 0 $ 512,690.00$ 40 G e n e r a l U t i l i t y A d j u s t m e n t s L S 1 $ 4 0 0 , 0 0 0 . 0 0 4 0 0 , 0 0 0 . 0 0 $ 1 6 , 5 0 0 . 0 0 $ 1 1 1 , 7 0 0 . 0 0 $ 1 1 2 , 3 5 0 . 0 0 $ 1 12,025.00$ 40 0 , 0 0 0 . 0 0 $ 6 , 5 0 0 . 0 0 $ 1 1 , 7 0 0 . 0 0 $ 1 2 , 3 5 0 . 0 0 $ 12,025.00$ 31 , 3 4 8 , 6 0 0 . 0 0 $ 1 , 2 5 8 , 2 8 0 . 0 0 $ 1 , 4 2 0 , 3 2 1 . 0 0 $ 1 , 4 0 9 , 7 4 8 . 0 0 $ 1,473,972.00$ ST O R M S E W E R I T E M S U B T O T A L MI S C . U T I L I T Y I T E M S MI S C U T I L I T Y I T E M S U B T O T A L BA S E B I D I T E M T O T A L D:\ c f a \ 2 0 1 0 \ 1 2 0 5 6 . l a _ p o r t e _ c o n c r e t e \ E N G \ H E A T H \ C o s t E s t i m a t e _ 7 - 5 - 1 1 . x l s 1 of 2 Cl i e n t : C i t y o f L a P o r t e P r o j e c t N a m e : Co n c r e t e S t r e e t P r o g r a m S t u d y D a t e : 7/ 7 / 2 0 1 1 Co s t E s t i m a t e 2 - O v e r a l l C o n s t r u c t i o n a n d P h a s e s 1 - 1 0 It e m No . It e m D e s c r i p t i o n U n i t Q u a n t i t y BA S E B I D I T E M S : F o r 6 3 9 S T A . o f R o a d w a y O v e r a l l P r o j e c t 1 M o b i l i z a t i o n L S 1 2 T r a f f i c C o n t r o l a n d R e g u l a t i o n s L S 1 3 R e m o v e a n d R e p l a c e a l l s i g n a g e L S 1 4 C l e a r i n g a n d G r u b b i n g L S 1 5 S W P P P P r o t e c t i o n L S 1 6 S o d d i n g S Y 2 2 4 , 0 0 0 GE N E R A L GS O Qu a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d Price 1 4 5 , 0 0 0 . 0 0 $ 1 4 2 , 0 0 0 . 0 0 $ 1 4 6 , 0 0 0 . 0 0 $ 1 5 0 , 0 0 0 . 0 0 $ 1 4 6 , 0 0 0 . 0 0 $ 1 48,000.00$ 1 2 2 , 5 0 0 . 0 0 $ 1 2 1 , 0 0 0 . 0 0 $ 1 2 3 , 0 0 0 . 0 0 $ 1 2 5 , 0 0 0 . 0 0 $ 1 2 3 , 0 0 0 . 0 0 $ 1 24,000.00$ 1 7 , 8 7 5 . 0 0 $ 1 7 , 3 5 0 . 0 0 $ 1 8 , 0 5 0 . 0 0 $ 1 8 , 7 5 0 . 0 0 $ 1 8 , 0 5 0 . 0 0 $ 1 8,400.00$ 1 6 , 7 5 0 . 0 0 $ 1 6 , 3 0 0 . 0 0 $ 1 6 , 9 0 0 . 0 0 $ 1 7 , 5 0 0 . 0 0 $ 1 6 , 9 0 0 . 0 0 $ 1 7,200.00$ 1 4 , 5 0 0 . 0 0 $ 1 4 , 2 0 0 . 0 0 $ 1 4 , 6 0 0 . 0 0 $ 1 5 , 0 0 0 . 0 0 $ 1 4 , 6 0 0 . 0 0 $ 1 4,800.00$ 7, 8 7 5 2 7 , 5 6 2 . 5 0 $ 7 , 3 5 0 2 5 , 7 2 5 . 0 0 $ 8 , 0 5 0 2 8 , 1 7 5 . 0 0 $ 8 , 7 5 0 3 0 , 6 2 5 . 0 0 $ 8 , 0 5 0 2 8 , 1 7 5 . 0 0 $ 8,400 29,400.00$ P H A S E 5 P H A S E 6 PHASE 8 PHASE 10 PHASE 9 P H A S E 7 7 R o a d w a y E x c a v a t i o n S T A 6 3 9 8 7” R e i n f o r c e d C o n c r e t e P a v e m e n t , c o m p l e t e - i n - pl a c e S Y 8 4 , 0 0 0 9 6” R e i n f o r c e d C o n c r e t e P a v e m e n t , c o m p l e t e - i n - pl a c e S Y 1 3 5 , 2 0 0 9 6 ” L i m e S t a b i l i z e d S u b g r ad e S Y 2 4 9 , 0 0 0 10 6 ” R e i n f o r c e d C o n c r e t e C u r b L F 1 2 7 , 8 0 0 11 L i m e ( 8 % ) T O N 5 , 4 0 0 12 7 ” R e i n f o r c e d C o n c r e t e D r i v e w a y s S Y 1 0 , 0 0 0 13 6 ” R e i n f o r c e d C o n c r e t e D r i v e w a y s S Y 4 1 , 1 0 0 14 Ad j u s t E x i s t i n g I n l e t s , M a n h o l e s , a n d V a l v e Bo x e s t o G r a d e L S 1 15 4 " C o n c r e t e S i d e w a l k , c o m p l e t e - i n - p l a c e S F 5 4 4 , 0 0 0 16 C u r b R a m p s , c o m p l e t e - i n - p l a c e E A 3 4 0 17 5" C o n c r e t e T r a i l ( 8 o r 1 0 f t w i d e , C o m p l e t e - i n - Pl a c e S F 9 5 , 0 0 0 18 Pa r k i n g O f f - S t r e e t , 6 " C o n c r e t e P a v e m e n t , 6 " Cu r b , a n d 6 " S u b - g r a d e , c o m p l e t e - i n - p l a c e S Y 1 3 , 0 0 0 PA V I N G I T E M S U B T O T A L DE M O L I T I O N GE N E R A L I T E M S U B T O T A L PA V I N G 11 4 , 1 8 7 . 5 0 $ 1 0 6 , 5 7 5 . 0 0 $ 1 1 6 , 7 2 5 . 0 0 $ 1 2 6 , 8 7 5 . 0 0 $ 1 1 6 , 7 2 5 . 0 0 $ 121,800.00$ 24 4 3 , 2 0 0 . 0 0 $ 2 1 3 7 , 8 0 0 . 0 0 $ 2 4 4 3 , 2 0 0 . 0 0 $ 2 5 4 5 , 0 0 0 . 0 0 $ 2 5 4 5 , 0 0 0 . 0 0 $ 25 45,000.00$ 9, 0 0 0 4 0 5 , 0 0 0 . 0 0 $ 8 , 4 0 0 3 7 8 , 0 0 0 . 0 0 $ 9 , 2 0 0 4 1 4 , 0 0 0 . 0 0 $ 1 0 , 0 0 0 4 5 0 , 0 0 0 . 0 0 $ 9 , 2 0 0 4 1 4 , 0 0 0 . 0 0 $ 9,600 432,000.00$ 4, 5 0 0 1 5 7 , 5 0 0 . 0 0 $ 4 , 2 0 0 1 4 7 , 0 0 0 . 0 0 $ 4 , 6 0 0 1 6 1 , 0 0 0 . 0 0 $ 5 , 0 0 0 1 7 5 , 0 0 0 . 0 0 $ 4 , 6 0 0 1 6 1 , 0 0 0 . 0 0 $ 4,800 168,000.00$ 10 , 1 2 5 2 5 , 3 1 2 . 5 0 $ 9 , 4 5 0 2 3 , 6 2 5 . 0 0 $ 1 0 , 3 5 0 2 5 , 8 7 5 . 0 0 $ 1 1 , 2 5 0 2 8 , 1 2 5 . 0 0 $ 1 0 , 3 5 0 2 5 , 8 7 5 . 0 0 $ 10,800 27,000.00$ 3, 7 5 0 1 1 , 2 5 0 . 0 0 $ 3 , 5 0 0 1 0 , 5 0 0 . 0 0 $ 3 , 8 3 3 1 1 , 5 0 0 . 0 0 $ 4 , 1 6 7 1 2 , 5 0 0 . 0 0 $ 3 , 8 3 3 1 1 , 5 0 0 . 0 0 $ 4,000 12,000.00$ 22 5 3 6 , 0 0 0 . 0 0 $ 2 1 0 3 3 , 6 0 0 . 0 0 $ 2 3 0 3 6 , 8 0 0 . 0 0 $ 2 5 0 4 0 , 0 0 0 . 0 0 $ 2 3 0 3 6 , 8 0 0 . 0 0 $ 240 38,400.00$ 36 0 1 6 , 9 2 0 . 0 0 $ 3 3 6 1 5 , 7 9 2 . 0 0 $ 3 6 8 1 7 , 2 9 6 . 0 0 $ 4 0 0 1 8 , 8 0 0 . 0 0 $ 3 6 8 1 7 , 2 9 6 . 0 0 $ 384 18,048.00$ 1, 4 6 3 5 4 , 1 1 2 . 5 0 $ 1 , 3 6 5 5 0 , 5 0 5 . 0 0 $ 1 , 4 9 5 5 5 , 3 1 5 . 0 0 $ 1 , 6 2 5 6 0 , 1 2 5 . 0 0 $ 1 , 4 9 5 5 5 , 3 1 5 . 0 0 $ 1,560 57,720.00$ 1 3 , 3 7 5 . 0 0 $ 1 3 , 1 5 0 . 0 0 $ 1 3 , 4 5 0 . 0 0 $ 1 3 , 7 5 0 . 0 0 $ 1 3 , 4 5 0 . 0 0 $ 1 3,600.00$ 19 , 1 2 5 8 6 , 0 6 2 . 5 0 $ 1 7 , 8 5 0 8 0 , 3 2 5 . 0 0 $ 1 9 , 5 5 0 8 7 , 9 7 5 . 0 0 $ 2 1 , 2 5 0 9 5 , 6 2 5 . 0 0 $ 1 9 , 5 5 0 8 7 , 9 7 5 . 0 0 $ 20,400 91,800.00$ 11 1 6 , 8 7 5 . 0 0 $ 1 1 1 5 , 7 5 0 . 0 0 $ 1 2 1 7 , 2 5 0 . 0 0 $ 1 3 1 8 , 7 5 0 . 0 0 $ 1 2 1 7 , 2 5 0 . 0 0 $ 12 18,000.00$ 3, 3 7 5 1 4 1 , 7 5 0 . 0 0 $ 3 , 1 5 0 1 3 2 , 3 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 45 0 1 8 , 9 0 0 . 0 0 $ 4 2 0 1 7 , 6 4 0 . 0 0 $ 4 6 0 1 9 , 3 2 0 . 0 0 $ 5 0 0 2 1 , 0 0 0 . 0 0 $ 4 6 0 1 9 , 3 2 0 . 0 0 $ 480 20,160.00$ 1, 0 1 6 , 2 5 7 . 5 0 $ 9 4 5 , 9 8 7 . 0 0 $ 8 9 2 , 9 8 1 . 0 0 $ 9 6 8 , 6 7 5 . 0 0 $ 8 9 4 , 7 8 1 . 0 0 $ 931,728.00$ 19 Re m o v e a n d D i s p o s e o f P a v e m e n t , S t r e e t , Dr i v e s , a n d S i d e w a l k , A l l T h i c k n e s s e s ( 0 2 2 2 1 ) S Y 1 6 2 , 9 0 0 20 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 15 " a n d l e s s L F 3 , 2 0 0 21 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 18 " L F 9 , 3 0 0 22 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 24 " L F 1 5 , 6 0 0 23 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 30 " - 4 2 " L F 5 , 6 0 0 23 In l e t s a n d M a n h o l e s ( C o n c . ) - A l l t y p e s a n d de p t h s E A 9 8 0 23 1 2 " D r a i n B a s i n s E A 9 6 0 24 8 " P V C S t o r m S e w e r L F 3 5 , 2 0 0 25 2 4 " S t o r m S e w e r L F 2 4 , 2 0 0 26 3 0 " S t o r m S e w e r L F 4 , 4 0 0 27 3 6 " S t o r m S e w e r L F 8 , 5 0 0 28 4 2 " S t o r m S e w e r L F 1 , 8 0 0 29 4 8 " S t o r m S e w e r L F 2 , 1 0 0 30 5 4 " S t o r m S e w e r L F 6 0 0 31 60 " S t S LF 14 0 0 DE M O L I T I O N I T E M S U B T O T A L ST O R M S E W E R 5, 8 5 0 2 3 , 4 0 0 . 0 0 $ 5 , 4 6 0 2 1 , 8 4 0 . 0 0 $ 5 , 9 8 0 2 3 , 9 2 0 . 0 0 $ 6 , 5 0 0 2 6 , 0 0 0 . 0 0 $ 5 , 9 8 0 2 3 , 9 2 0 . 0 0 $ 6,240 24,960.00$ 20 1 6 0 . 0 0 $ 2 0 1 6 0 . 0 0 $ 2 0 1 6 0 . 0 0 $ 2 0 1 6 0 . 0 0 $ 2 0 1 6 0 . 0 0 $ 20 160.00$ 60 6 0 0 . 0 0 $ 6 0 6 0 0 . 0 0 $ 6 0 6 0 0 . 0 0 $ 6 0 6 0 0 . 0 0 $ 6 0 6 0 0 . 0 0 $ 60 600.00$ 12 0 1 , 4 4 0 . 0 0 $ 1 2 0 1 , 4 4 0 . 0 0 $ 1 2 0 1 , 4 4 0 . 0 0 $ 1 2 0 1 , 4 4 0 . 0 0 $ 1 2 0 1 , 4 4 0 . 0 0 $ 120 1,440.00$ 40 5 6 0 . 0 0 $ 4 0 5 6 0 . 0 0 $ 4 0 5 6 0 . 0 0 $ 4 0 5 6 0 . 0 0 $ 4 0 5 6 0 . 0 0 $ 40 560.00$ 26 , 1 6 0 . 0 0 $ 2 4 , 6 0 0 . 0 0 $ 2 6 , 6 8 0 . 0 0 $ 2 8 , 7 6 0 . 0 0 $ 2 6 , 6 8 0 . 0 0 $ 27,720.00$ 45 1 1 7 , 0 0 0 . 0 0 $ 4 2 1 0 9 , 2 0 0 . 0 0 $ 4 6 1 1 9 , 6 0 0 . 0 0 $ 5 0 1 3 0 , 0 0 0 . 0 0 $ 4 6 1 1 9 , 6 0 0 . 0 0 $ 48 124,800.00$ 45 3 0 , 3 7 5 . 0 0 $ 4 2 2 8 , 3 5 0 . 0 0 $ 4 6 3 1 , 0 5 0 . 0 0 $ 5 0 3 3 , 7 5 0 . 0 0 $ 4 6 3 1 , 0 5 0 . 0 0 $ 48 32,400.00$ 1, 2 3 8 2 4 , 7 5 0 . 0 0 $ 1 , 1 5 5 2 3 , 1 0 0 . 0 0 $ 1 , 2 6 5 2 5 , 3 0 0 . 0 0 $ 1 , 3 7 5 2 7 , 5 0 0 . 0 0 $ 1 , 2 6 5 2 5 , 3 0 0 . 0 0 $ 1,320 26,400.00$ 85 5 4 7 , 0 2 5 . 0 0 $ 7 9 8 4 3 , 8 9 0 . 0 0 $ 8 7 4 4 8 , 0 7 0 . 0 0 $ 9 5 0 5 2 , 2 5 0 . 0 0 $ 8 7 4 4 8 , 0 7 0 . 0 0 $ 912 50,160.00$ 0 - $ 0 - $ 4 7 5 3 3 , 2 5 0 . 0 0 $ 0 - $ 4 7 5 3 3 , 2 5 0 . 0 0 $ 900 63,000.00$ 47 5 3 8 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 9 5 0 7 6 , 0 0 0 . 0 0 $ 9 5 0 7 6 , 0 0 0 . 0 0 $ 450 36,000.00$ 0 - $ 4 7 5 4 2 , 7 5 0 . 0 0 $ 0 - $ 0 - $ 9 5 0 8 5 , 5 0 0 . 0 0 $ 0 -$ 47 5 4 7 , 5 0 0 . 0 0 $ 0 - $ 4 5 0 4 5 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 450 45,000.00$ 0 - $ 0 - $ 4 5 0 6 7 , 5 0 0 . 0 0 $ 0 - $ 0 - $ 0 -$ 10 0 55 0 0 0 0 $ 0 $ 45 0 24 7 5 0 0 0 $ 0 $ 0$0$ 31 60 " St or m Sew e r LF 1,40 0 32 6 6 " S t o r m S e w e r L F 1 0 0 33 7 2 " S t o r m S e w e r L F 1 , 0 0 0 34 7 8 " S t o r m S e w e r L F 1 0 0 35 8 4 " S t o r m S e w e r L F 5 0 0 36 9 6 " S t o r m S e w e r L F 1 , 0 0 0 37 1 0 8 " S t o r m S e w e r L F 1 , 0 0 0 38 1 1 4 " S t o r m S e w e r L F 7 0 0 39 Ch a n n e l I m p r o v e m e n t s D o w n s t r e a m o f 3 r d St r e e t O u t f a l l ( W e i r o r c u l v e r t , a n d e t c . ) L S 1 40 G e n e r a l U t i l i t y A d j u s t m e n t s L S 1 ST O R M S E W E R I T E M S U B T O T A L MIS C . U T I L I T Y I T E M S MIS C U T I L I T Y I T E M S U B T O T A L BA S E B I D I T E M T O T A L 10 0 5 , 5 0 0 . 0 0 $ 0 - $ 4 5 0 2 4 , 7 5 0 . 0 0 $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 0 - $ 0 - $ 0 - $ 0 - $ 0 - $ 0 -$ 31 0 , 1 5 0 . 0 0 $ 2 4 7 , 2 9 0 . 0 0 $ 3 9 4 , 5 2 0 . 0 0 $ 3 1 9 , 5 0 0 . 0 0 $ 4 1 8 , 7 7 0 . 0 0 $ 377,760.00$ 1 1 4 , 6 2 5 . 0 0 $ 1 1 3 , 6 5 0 . 0 0 $ 1 1 4 , 9 5 0 . 0 0 $ 1 1 6 , 2 5 0 . 0 0 $ 1 1 4 , 9 5 0 . 0 0 $ 1 15,600.00$ 14 , 6 2 5 . 0 0 $ 1 3 , 6 5 0 . 0 0 $ 1 4 , 9 5 0 . 0 0 $ 1 6 , 2 5 0 . 0 0 $ 1 4 , 9 5 0 . 0 0 $ 15,600.00$ 1, 4 8 1 , 3 8 0 . 0 0 $ 1 , 3 3 8 , 1 0 2 . 0 0 $ 1 , 4 4 5 , 8 5 6 . 0 0 $ 1 , 4 6 0 , 0 6 0 . 0 0 $ 1 , 4 7 1 , 9 0 6 . 0 0 $ 1,474,608.00$ D:\ c f a \ 2 0 1 0 \ 1 2 0 5 6 . l a _ p o r t e _ c o n c r e t e \ E N G \ H E A T H \ C o s t E s t i m a t e _ 7 - 5 - 1 1 . x l s 2 of 2 Cl i e n t : C i t y o f L a P o r t e P r o j e c t N a m e : Co n c r e t e S t r e e t P r o g r a m S t u d y D a t e : 7/ 2 1 / 2 0 1 1 Co s t E s t i m a t e 3 - O v e r a l l C o n s t r u c t i o n a n d P a v e m e n t R e d u c t i o n O p t i o n s It e m No . It e m D e s c r i p t i o n U n i t Q u a n t i t y U n i t P r i c e E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E x t e n d e d P r i c e Q u a n t i t y E xtended Price BA S E B I D I T E M S : F o r 6 3 9 S T A . o f R o a d w a y 1 M o b i l i z a t i o n L S 1 $ 1 , 2 7 8 , 0 0 0 . 0 0 1 , 2 7 8 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 2 T r a f f i c C o n t r o l a n d R e g u l a t i o n s L S 1 $ 6 3 9 , 0 0 0 . 0 0 6 3 9 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 3 R e m o v e a n d R e p l a c e a l l s i g n a g e L S 1 $ 2 2 3 , 6 5 0 . 0 0 2 2 3 , 6 5 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 4 C l e a r i n g a n d G r u b b i n g L S 1 $ 1 9 1 , 7 0 0 . 0 0 1 9 1 , 7 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 5 S W P P P P r o t e c t i o n L S 1 $ 1 2 7 , 8 0 0 . 0 0 1 2 7 , 8 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 6 S o d d i n g S Y 2 2 4 , 0 0 0 $ 3 . 5 0 7 8 4 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 3, 2 4 4 , 1 5 0 . 0 0 $ - $ - $ - $ -$ CU R R E N T L Y I N C L U D E D I N O V E R A L L O P T I O N " A " O P T I O N " B " O P T I O N " B " OV E R A L L P R O J E C T (C o n s t r u c t i o n o n l y ) BA S E C A S E (2 8 ' C O N C . W / C U R B ) ON E - W A Y C A S E (1 2 ' C O N C . W / O U T C U R B ) MID-BLOCK BOLLARD CASE (20' CONC. W/OUT CURB - TWO WAY ST.)MID-BLOCK BOLLARD CASE (20' DRIVABLE GRASS W/OUT CURB - TWO WAY ST.) GE N E R A L GE N E R A L I T E M S U B T O T A L 7 R o a d w a y E x c a v a t i o n S T A 6 3 9 $ 1 , 8 0 0 . 0 0 1 , 1 5 0 , 2 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 8 7” R e i n f o r c e d C o n c r e t e P a v e m e n t , c o m p l e t e - i n - pl a c e S Y 8 4 , 0 0 0 $ 4 5 . 0 0 3 , 7 8 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 9 6” R e i n f o r c e d C o n c r e t e P a v e m e n t , c o m p l e t e - i n - pl a c e S Y 1 3 5 , 2 0 0 $ 3 5 . 0 0 4 , 7 3 2 , 0 0 0 . 0 0 $ 2 2 , 0 5 0 7 7 1 , 7 5 0 . 0 0 $ 9 , 4 5 0 3 3 0 , 7 5 0 . 0 0 $ 1 5 , 7 5 0 5 5 1 , 2 5 0 . 0 0 $ 0 -$ 9 6 ” L i m e S t a b i l i z e d S ub g r a d e S Y 2 4 9 , 0 0 0 $ 2 . 5 0 6 2 2 , 5 0 0 . 0 0 $ 2 2 , 0 5 0 5 5 , 1 2 5 . 0 0 $ 9 , 4 5 0 2 3 , 6 2 5 . 0 0 $ 1 5 , 7 5 0 3 9 , 3 7 5 . 0 0 $ 15,750 39,375.00$ 10 6 ” R e i n f o r c e d C o n c r e t e C u r b L F 1 2 7 , 8 0 0 $ 3 . 0 0 3 8 3 , 4 0 0 . 0 0 $ 1 4 , 0 0 0 4 2 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 -$ 11 L i m e ( 8 % ) T O N 5 , 4 0 0 $ 1 6 0 . 0 0 8 6 4 , 0 0 0 . 0 0 $ 4 6 0 7 3 , 6 0 0 . 0 0 $ 0 - $ 3 7 5 6 0 , 0 0 0 . 0 0 $ 375 60,000.00$ 12 7 ” R e i n f o r c e d C o n c r e t e D r i v e w a y s S Y 1 0 , 0 0 0 $ 4 7 . 0 0 4 7 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 13 6 ” R e i n f o r c e d C o n c r e t e D r i v e w a y s S Y 4 1 , 1 0 0 $ 3 7 . 0 0 1 , 5 2 0 , 7 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 14 Ad j u s t E x i s t i n g I n l e t s , M a n h o l e s , a n d V a l v e Bo x e s t o G r a d e L S 1 $ 9 5 , 8 5 0 . 0 0 9 5 , 8 5 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 15 4 " C o n c r e t e S i d e w a l k , c o m p l e t e - i n - p l a c e S F 5 4 4 , 0 0 0 $ 4 . 5 0 2 , 4 4 8 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 16 C u r b R a m p s , c o m p l e t e - i n - p l a c e E A 3 4 0 $ 1 , 5 0 0 . 0 0 5 1 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 17 5" C o n c r e t e T r a i l ( 8 o r 1 0 f t w i d e , C o m p l e t e - i n - Pla c e S F 9 5 , 0 0 0 $ 5 . 0 0 4 7 5 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 18 Pa r k i n g O f f - S t r e e t , 6 " C o n c r e t e P a v e m e n t , 6 " Cu r b , a n d 6 " S u b - g r a d e , c o m p l e t e - i n - p l a c e S Y 1 3 , 0 0 0 $ 4 2 . 0 0 5 4 6 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 17 , 5 9 7 , 6 5 0 . 0 0 $ 9 4 2 , 4 7 5 . 0 0 $ 3 5 4 , 3 7 5 . 0 0 $ 6 5 0 , 6 2 5 . 0 0 $ 99,375.00$ 0 19 Re m o v e a n d D i s p o s e o f P a v e m e n t , S t r e e t , Dr i v e s , a n d S i d e w a l k , A l l T h i c k n e s s e s ( 0 2 2 2 1 ) S Y 1 6 2 , 9 0 0 $ 4 . 0 0 6 5 1 , 6 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ PA V I N G PA V I N G I T E M S U B T O T A L DE M O L I T I O N 20 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 15 " a n d l e s s L F 3 , 2 0 0 $ 8 . 0 0 2 5 , 6 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 21 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 18 " L F 9 , 3 0 0 $ 1 0 . 0 0 9 3 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 22 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 24 " L F 1 5 , 6 0 0 $ 1 2 . 0 0 1 8 7 , 2 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 23 Re m o v e a n d D i s p o s e o f S t o r m S e w e r - p i p e s i z e 30 " - 4 2 " L F 5 , 6 0 0 $ 1 4 . 0 0 7 8 , 4 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 1, 0 3 5 , 8 0 0 . 0 0 $ - $ - $ - $ -$ 23 In l e t s a n d M a n h o l e s ( C o n c . ) - A l l t y p e s a n d de p t h s E A 9 8 0 $ 2 , 6 0 0 . 0 0 2 , 5 4 8 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 23 1 2 " D r a i n B a s i n s E A 9 6 0 $ 6 7 5 . 0 0 6 4 8 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 24 8 " P V C S t o r m S e w e r L F 3 5 , 2 0 0 $ 2 0 . 0 0 7 0 4 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 25 2 4 " S t o r m S e w e r L F 2 4 , 2 0 0 $ 5 5 . 0 0 1 , 3 3 1 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 26 3 0 " S t o r m S e w e r L F 4 , 4 0 0 $ 7 0 . 0 0 3 0 8 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 27 3 6 " S t o r m S e w e r L F 8 , 5 0 0 $ 8 0 . 0 0 6 8 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 28 4 2 " S t o r m S e w e r L F 1 , 8 0 0 $ 9 0 . 0 0 1 6 2 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 29 4 8 " S t o r m S e w e r L F 2 , 1 0 0 $ 1 0 0 . 0 0 2 1 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 30 5 4 " S t o r m S e w e r L F 6 0 0 $ 1 5 0 . 0 0 9 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 31 6 0 " S t o r m S e w e r L F 1 , 4 0 0 $ 2 1 0 . 0 0 2 9 4 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 32 6 6 " S t o r m S e w e r L F 1 0 0 $ 2 6 0 . 0 0 2 6 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 33 7 2 " S t o r m S e w e r L F 1 , 0 0 0 $ 3 0 0 . 0 0 3 0 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 34 7 8 " S t o r m S e w e r LF 1 0 0 $ 3 2 5 . 0 0 3 2 ,50 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ DE M O L I T I O N I T E M S U B T O T A L ST O R M S E W E R $ , $ $ $ $$ 35 8 4 " S t o r m S e w e r L F 5 0 0 $ 4 2 5 . 0 0 2 1 2 , 5 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 36 9 6 " S t o r m S e w e r L F 1 , 0 0 0 $ 4 5 0 . 0 0 4 5 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 37 1 0 8 " S t o r m S e w e r L F 1 , 0 0 0 $ 4 7 5 . 0 0 4 7 5 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 38 1 1 4 " S t o r m S e w e r L F 7 0 0 $ 5 0 0 . 0 0 3 5 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 39 Ch a n n e l I m p r o v e m e n t s D o w n s t r e a m o f 3 r d St r e e t O u t f a l l ( W e i r o r c u l v e r t , a n d e t c . ) L S 1 $ 2 5 0 , 0 0 0 . 0 0 2 5 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 9, 0 7 1 , 0 0 0 . 0 0 $ - $ - $ - $ -$ 40 G e n e r a l U t ili t y A d j u s t m e n t s L S 1 $ 4 0 0 , 0 0 0 . 0 0 4 0 0 , 0 0 0 . 0 0 $ 0 - $ 0 - $ 0 - $ 0 -$ 40 0 , 0 0 0 . 0 0 $ - $ - $ - $ -$ 31 , 3 4 8 , 6 0 0 . 0 0 $ 9 4 2 , 4 7 5 . 0 0 $ 3 5 4 , 3 7 5 . 0 0 $ 6 5 0 , 6 2 5 . 0 0 $ 99,375.00$ 1 G r a s s y P a v e r s ( 2 ' x 2 ' m a t s ) S F 0 $ 1 . 5 0 - $ 0 - $ 0 - $ 0 - $ 140,000 210,000.00$ 2 6 " C r u s h e d C o n c r e t e T O N 0 $ 3 0 . 0 0 - $ 0 - $ 0 - $ 0 - $ 5,000 150,000.00$ 3 2 " C l e a n S a n d T O N 0 $ 2 0 . 0 0 - $ 0 - $ 0 - $ 0 - $ 1,700 34,000.00$ 4 B o l l a r d s L S 0 $ 1 0 , 0 0 0 . 0 0 - $ 0 - $ 0 - $ 1 1 0 , 0 0 0 . 0 0 $ 1 10,000.00$ - $ - $ - $ 1 0 , 0 0 0 . 0 0 $ 404,000.00$ 31 , 3 4 8 , 6 0 0 . 0 0 $ 9 4 2 , 4 7 5 . 0 0 $ 3 5 4 , 3 7 5 . 0 0 $ 6 6 0 , 6 2 5 . 0 0 $ 503,375.00$ ST O R M S E W E R I T E M S U B T O T A L MIS C . U T I L I T Y I T E M S MI S C U T I L I T Y I T E M S U B T O T A L BA S E B I D I T E M S U B T O T A L AL T E R N A T E P A V E M E N T R E D U C T I O N I T E M S AL T E R N A T E P A V I N G R E D U C T I O N I T E M S U B T O T A L BA S E P L U S A L T E R N A T E B I D I T E M T O T A L F O R S C E N A R I O D:\ c f a \ 2 0 1 0 \ 1 2 0 5 6 . l a _ p o r t e _ c o n c r e t e \ E N G \ H E A T H \ C o s t E s t i m a t e _ 7 - 5 - 1 1 . x l s 1 of 2 City of La Porte CobbFendley Concrete Street Program Study July 21, 2011 APPENDIX “B” – DRIVABLE GRASS BROCHURE DRIVABLE GRASS®Permeable, Flexible and Plantable Concrete Pavement System Plantable concretesystems® Simply the best permeable, ﬂ exible and plantable pavement system in the marketplace today! 2 DRIVABLE GRASS® is a permeable, ﬂ exible and plantable concrete pavement system. It is designed for use in areas where a permeable, and/or a vegetated surface is desired for aesthetic or sustainable reasons. An engineered grid system allows the product to ﬂ ex and conform to irregular ground surface contours while providing the intended structural support. The products geometry allows for enhanced root penetration, inﬁ ltration/ﬁ ltration of storm water, increased on-site storm water storage and minimization of site runoff. DRIVABLE GRASS® maintains its load supporting characteristics even when saturated. 3 COMMERCIAL APPLICATIONS The perfect paving choice for a wide variety of applications! DRIVABLE GRASS® is a prime example of the new generation of environmentally friendly products that engineers and designers should specify and the development and building industries must provide in this era of sustainability. DRIVABLE GRASS® can be used in place of poured concrete and asphalt for a wide variety of applications. It is designed for use in areas where a permeable, vegetated vehicle access or parking surface is beneﬁ cial or required. In addition to driveways and parking stalls, other applications include emergency and service vehicle access lanes, RV parking, and bio-swale protection, just to name a few. Its unique properties provide opportunity for a diverse range of uses. Whether your project is a residential driveway or an acre of alternative parking that doubles as a storm water bio-retention basin, DRIVABLE GRASS® is the best solution to your permeable pavement design needs. Access Easements Fire Lanes Parking Areas Driveways RV & Boat Storage Golf Cart Paths Bio-Swale Reinforcement Green Roofs Pathways Maintenance Yards RV Parks Boat Ramps Slope Armor Trickle Channels Stream Bank Installation Culvert Outlets 4 RESIDENTIAL APPLICATIONS More and more homeowners today want to do their part to insure a better tomorrow! Many homeowners today are looking for ways to reﬂ ect their environmental concerns in sustainable yet aesthetically pleasing home improvements. Along with other low impact development (LID) strategies, the use of DRIVABLE GRASS® as “GREEN” driveways, side yard parking access, garden paths and permeable patios provides a perfect opportunity to minimize storm water runoff and reduce heat island effect. 5 There are many reasons for choosing DRIVABLE GRASS® with an alternative inﬁ ll. Whether it’s environmental concern, an aesthetic choice, regional climate response or regulatory constraint, not everybody wants to grow turf grass. Alternative inﬁ lls basically divide into two classes: alternative planting and non-vegetated materials. Alternative plants for DRIVABLE GRASS® include ground covers and non-turf grasses. With alternative plants, the installation proﬁ le remains the same as with turf-grass; a mix of sand and organic material above and below the mats to act as a rooting zone. In some cases the plant material can be seeded like turf grass, while others may require hand installation of plant plugs in the void spaces between the mat pads or even the periodic removal of individual pads for installation of plant sizes up to a 4” pot. Watering requirements will depend on the plant material selected, but in most cases it will be signiﬁ cantly lower than for turf grass. Non-vegetated inﬁ lls include crushed rock, sand, dirt, bark mulch and even artiﬁ cial turf. Each of these products may be chosen for their particular properties, as well as the fact that they require no water. A one-inch layer of sand, without added organic material, is placed as a leveling base below the DRIVABLE GRASS® mat for non-vegetated inﬁ ll. The sand base is placed over a landscape ﬁ lter fabric to prevent weed growth. ALTERNATIVE INFILLS SAND BARK GRAVEL GROUND COVER DIRT ARTIFICIAL GRASS 6 Where reduced water consumption is a consideration, DRIVABLE GRASS® can be installed using alternative inﬁ lls. 7 Strength and Durability! Soil Retention’s DRIVABLE GRASS® product was just the solution we were looking for. Providing the strength and durability we require while at the same time solving our run off water issue.” - Oceanside Fire Chief 8 NOTE: Existing subgrade and base materials are to be compacted prior to placement of the DRIVABLE GRASS® . These recommendations are to be used as a general guide. Refer to your Civil or Geotechnical engineer for actual base thickness design. Recommendations were generated using Crushed Miscellaneous Base (CMB) as the typical base material, other types of base material can be used, CMB has a gravel factor of GF=1.1. Actual base thickness will be dependant on the Trafﬁ c Index (TI) and the Gravel Factor (GF) generated by the Engineer of Record for the project based on site speciﬁ c conditions. Estimated Trafﬁ c Index (TI) values that were used for the generation of the recommended base thickness provided in the table are: Firelane TI=4.0, Parking stall TI=4.0, Traveled Way TI=5.5. Filter Fabric and subdrains may be required for soils with a low value of permeability and strength. Soils not recommended for use as subgrade material are the OL, OH, PT type soils. Stormwater requirements may ultimately govern the design of the base thickness. Typical R- Value Range Firelane Parking Lots Stalls Parking Lots Traveled Way Residential Driveways Walkways 30-70 6-8 4-8 6-12 0-4 0 10-40 6-10 6-10 8-14 2-6 0 5-15 10-12 8-12 12-16 6-10 0-4 USCS Classiﬁ cation Subgrade Gravels/Clean Sand GW - Well Graded Gravels GP - Poorly Graded Gravels GM - Silty Gravels GC - Clayey Gravels SW - Well Graded Sands SP - Poorly Graded Sands Sands SM - Silty Sands 6-10 SC - Clayey Sands Clay/Silt ML - Inorganic silts of low plasticity CL - Inorganic clays of low plasticity MH - Inorganic silts of high plasticity CH - Inorganic clays of High plasticity AA 2’ 2’ Drivable Grass® Mats Seed, Plug, Sod, Or Alternative or Inﬁ ll At Surface Backﬁ ll W/ 80% Well Graded Sand/20% Organic Material Provide 1.5” Bedding Course of 80% Well Graded Sand/20% Organic Material Compacted Base Depth Per Soil Engineer Compacted Subgrade per Soil EngineerOptional Geotextile per Soils Engineer Optional Geotextile Compacted Soil @ Perimeter 4” Nominal Typical Heavy Trafﬁ c Drivable Grass® Detail SECTION A-ADG1 Plan View NOTE: For Light Duty Trafﬁ c Applications: Provide 80% Well Graded Sand /20% Organic Material for Surface Inﬁ ll and for Bedding Material Provide 1.5” to 3” Bedding Course Depending on Application NOTE: For Storm Water Management Applications Including Storage and Inﬁ ltration; Alternative Inﬁ lls, Gravel Base Material, and Sub-Surface Drainage may be Required DRIVABLE GRASS® Structural Design Guidelines Base Thickness (in.) Application X 9 DRIVABLE GRASS® easily allows for difﬁ cult installations such as vertical curves and grade breaks to be achieved, due to its ﬂ exiblility. Its grid connected independent concrete pads are designed to ﬂ ex and conform to irregular ground surface contours along predeﬁ ned linear grooves without coming apart. Easily handled by one person, the 2’ x 2’ mats are quickly installed and don’t require mechanical compaction to hold them in place. For additional information, visit our website at www.soilretention.com Properties Easier to install than interlocking concrete pavers! Property Value Nominal Area LxWxH 24”x 24” x 1.5” Gross Area of each mat 4 s.f. Concrete Strength 5000 psi Weight of each mat 45 lbs Flexibility min. radius of curvature 12 in Plantable Area 60% 100% for Sod Concrete Surface Area 40% Concrete Bearing Area 88% Mats per pallet 60 Area covered per pallet 240 s.f. Color* Buff/Tan, Grey, Terracotta * other colors available for special order BUFF/TAN GREY TERRACOTTA 10 11 Section Intent/Application Example Uses Credit Points Alternative Parking capacity 4.4 1 Transportation Site Development Protect/Restore Habitat 5.1 1 Site Development Maximize Open Spaces 5.2 1 Stormwater Design Quantity Control 6.1 1 Stormwater Design Quality Control Credit 6.2 1 Heat Island Effect Non-Roof 7.1 1 Heat Island Effect Roof 7.2 1 Water Efﬁ cient Reduce by 50% 1 2-4 Landscaping or No Potable Water Use or Irrigation Recycled Content 10% / 20% 4 1-2 (Post-Consumer + 1/2 Pre- Consumer) Regional Materials 10% / 20% Extracted 5 1-2 Processed and Manufactured Regionally Materials and Resources Innovation & Design Process Innovation in Design 1 1-5 Water Efﬁ ciency Sustainable Sites DRIVABLE GRASS® would allow overﬂ ow parking that would not count for excess of local zoning requirements Overﬂ ow Parking Stalls, Bioswale Parking Stalls, Access Roads, Walkways /Pathways Bioswale, Trickle Channels, Parking Areas, Vegetated Roof Bioswale, Trickle Channels, Parking Areas, Vegetated Roof Parking Areas and Access Roads Green Roof Pathways/Erosion Control Use as a permeable surface/ﬁ lter to collect water which can then be used for landscaping Use with alternate inﬁ lls or drought tolerant groundcovers or as part of a Xeriscape w/gravel inﬁ ll for erosion control 45% Cement Replacement with Fly Ash in Concrete Mix We currently manufacture in several states. Please contact us for locations. LEED Credits and Potential Point Contributions 12 LOW IMPACT DEVELOPMENT (LID) Drivable Grass® provides a soft visual look. BEST MANAGEMENT PRACTICE (BMP) Long term effective solutions. DURABILITY Drivable Grass® has a concrete compressive strength of 5,000 psi. The design allows Drivable Grass® to move up and down with a freeze/thaw cycle. STRENGTH Proven load capacity – see Oceanside Fire Department and other test reports. FLEXIBILITY WITHOUT MEMORY Reinforcing grid and grooves in Drivable Grass® give it the ability to conform to uneven contours in the sub-base. BIO-FILTRATION Insects and micro-organisms within the grass inﬁ ll help to signiﬁ cantly break down pollutants in the stormwater. PERMEABILITY Reduces site runoff, promoting ground water recharge and onsite storage. ROOT PENETRATION Drivable Grass® allows for superior root penetration into the underlying sub-grade promoting healthy growth. LOWER RUNOFF COEFFICIENT “C” Helps to reduce storm drain and inlet size. REDUCTION IN HEAT ISLAND EFFECT Light color and grass surface reﬂ ects solar radiation helping to cool the surroundings. LESS EXCAVATION Requires less removal of sub-base than traditional pavers or thick blocks. QUICK EASY INSTALLATION Placement of 4 s.f. at a time. Drivable Grass® is installed in half the time of conventional pavers. BENEFITS 13 Replace conventional detention basins and gain more usable space! DRIVABLE GRASS® consists of a unique lattice-style structure that allows vegetation to grow through it while simultaneously providing a solid surface with strength comparable to more common paving materials. The permeable nature of DRIVABLE GRASS® enables precipitation to inﬁ ltrate into the underlying soil, thus increasing on-site storm water storage and minimizing runoff. Stormwater Properties Property Value Run off coefﬁ cient (C) Aggregate Inﬁ ll 0.1-0.6 * Grass Inﬁ ll 0-0.4 ** Inﬁ ltration rate (K in/hr) Aggregate Inﬁ ll 4-40 * Grass Inﬁ ll 1-4 ** Manning’s Roughness Factor (n) - 0.025-0.03 */** NOTES: * Depends on size, shape of aggregate used as inﬁ ll ** Depends on amount and type of grass used Bedding Course/ Root Zone Structural Base Section Exsisting Sub Grade Groundwater Table STORM WATER MANAGEMENT Filter Fabric as Required 14 Typical Drainage Swale Detail Permeability Surface Storage Capacity Lower “C” Value Increase Time Concentration Bioﬁ ltration Storage/Detention Basin Inﬁ ltration Groundwater Recharge DRIVABLE GRASS® Mats Slope NOTE: Adjacent Surface Varies Depending on Application Existing Subgrade Filter Fabric as Required Adjacent Surface Adjacent Surface 15 Protected by US and International Patents and Trademarks Distributed By (800) 346-7995www.soilretention.com