Technical Report - AC-883579_HWY-347.pdf

TECHNICAL REPORT

LANDSLIDE AND ROAD DAMAGE EVALUATION AND

REPAIR RECOMMENDATIONS

FOR THE

RECONSTRUCTION OF HIGHWAY

PR-339 AT KM. 1.6 TO 1.7

MAYAGUEZ, PUERTO RICO

PUERTO RICO HIGHWAY AND TRANSPORTATION AUTHORITY

PRHTA Design Area

EMERGENCY RELIEF PROGRAM

Prepared by:

ROBERTO REXACH CINTRON & ASSOCIATES

February 21, 2019

Technical Report Project: ER-HWY-347 PR-339 Km. 1.7 - 1.8 Mayagüez, PR Project Puerto Rico Highway and Transportation Authority Emergency Relief Program Page – 2

Table of Contents

Introduction ......……………………………….………………………………...…….………………… 3

Damage Assessment.……………………………………………...…………….…………………...… 3

Site Inspection ………………………….………………………………….…………………… 3

Expected challenges ……………………………….…………………….…….……………… 5

Studies ……………………………...……………………………………………….…………………… 5

Survey and Topography ……………………………………….………….…………………… 5

Geotechnical ……………………...…………………………………….….…………………… 6

Environmental …….……………………………………………………….….………………… 6

Technical Solutions ……………………………….……………………………….……….…………… 6

Alternate 1 ……………………………….……………………………………………………… 6

Schematic Plans Alternate 1 …………………………………………………………. 7

Alternate 2 ……………………………….…………...………………...…...…………….…... 12

Schematic Plans Alternate 2 …………….……………………………………….…. 13

.. Alternate 3……………………………………………………………...….….………….……. 18

Schematic Plans Alternate 3 ………………………………………………………… 19

Evaluation …………………………………………….…………………………….……………….…. 24

Evaluation Table ……………………………….………………………………......……………….…. 25

Recommendations ……………………………….…………………………....…...……….…..….…. 25

Appendix A: Geotechnical Investigation ………………………………………. ………….…......… 26

Appendix B: Environmental………………………………………………………………….…….…. 32

B-1: Cultural Resources Assessment Phase IA by Sharon Meléndez Ortiz, MA…….… 33

B-2: Biological Assessment by Enviro – Logic……………………………..………….…… 52

B-3: Survey to Determine the Presence of Asbestos by Zimmetry Environmental Management, Corp…………………………….………. 58

B-3: Survey to Determine the Presence of Lead by Zimmetry Environmental Management, Corp…………………………….………. 66

Appendix C: Opinions of Probable Cost………………………………………………….…………. 81

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 3

Introduction

The Puerto Rico Highway and Transportation Authority developed the Emergency Relief Program in order to mitigate and repair the damages to the myriad of roadways that were affected by the passing of Hurricanes Irma and Maria in September of 2017. The aftermath of these storms left the Puerto Rico highway system with numerous bridges in need of replacement or repairs, hundreds of landslides throughout the island, highway signage and traffic lights destroyed and or collapsed. This project will include the reconstruction of Highway PR 339 and a landslide which affected the roadway between Kilometers 1.6 to 1.7 in the Municipality of Mayaguez.

Figure 1. Aerial view of the roadway section

Damage Assessment

Site Description

We observed a failed section of the roadway including the existing guardrail and the curb and gutters in a section right before and behind a gabion retaining wall. In our original visit on

April 2018 the failed area was blocked off by an earthen berm and in our latest visit during January 2019 the berm had been replaced by a concrete barrier.

Across the roadway there was an accumulation of soil and vegetative matter and in our first visit we did not locate an inlet structure which collects the roadway runoff

Figure 2. Showing Damaged Area

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 4 and discharges through the gabion wall. The location of this discharge point was not visible due to the overabundance of vegetation in the area.

From our observations and the studies performed we believed that the area the existing culvert was clogged and / or blocked (it is still clogged) and the resulting water accumulation flowed through the low point of the roadway (see arrow on Figures 3 and 5) and behind and through the wall. Because there is a berm on the other side of the road the water overflowed the side of the road just before, as well as, through and beneath the existing gabion wall. This excessive water flow caused the erosion of the slope immediately before the gabion retaining wall which failed. It also produced a settlement or slippage of the wall and undermined the roadway section (this failure may have been due to a rupture or collapse of the existing drainage pipe) causing the settlement of the roadway and the failure of the pavement structure, curbs, gutters and guard rail (see cover photo and Figures 2 to 4). The gabion wall seems unaffected although, as can be seen in Figure 4, the curbs separated and settled in relation to the pavement in areas up to 0.30 mts. The existing gabion wall was built

Figure 4. Showing Separation of Curbs

Figure 3. Showing Damaged Curbs and Guardrail

Figure 5. Showing Inlet Position

Figure 7 Google Earth Aerial photo, 10/31/2006

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 5 after Hurricane Jeanne (9/15/2004), on the Google earth photos of November 2004 we can see the slick caused by a possible landslide in the area were the gabion wall was later built (see Figure

6) as can be seen on the photo of October 2006.

It is important to note that the photo is slightly misaligned with respect to the marked polygon and pin. This is a misalignment by Google. In Figure 7 dated October 2006 we can see the constructed gabion wall. This is a misalignment by Google. In Figure 7 dated October 2006 we can see the constructed gabion wall. In Figure 8 we can observe the location of the 2004 landslide (to the right) and the 2017 landside (to the right) indicated by the superimposed arrows.

In Figure 9 we show an aerial photo provided by NOAA and according to the metafile taken during the month of September 2017, Immediately after the hurricane. We can clearly see the following:

1. The slick caused by the new landslide

2. No spill or slick to the north of the roadway, most of the runoff spilled to the south at the new landslide.

3. Very little indication of the discharge from the culvert.

4. Damage to the roadway.

We recommend that further studies be allowed to verify the culvert condition and ascertain where it is blocked or whether it has collapsed. This last condition is possible as there is a slight depression in the roadway in the area over the culvert (see Figures 3 and 5) and as the wall settled it is possible that it may have ruptured the pipe. We recommend and request the use of cameras to investigate the pipe condition.

Expected Challenges

The project is small with a severe topography and limited in the area it will encompass, that in itself is a challenge, further the excavation of approximately 4 to 5 meters on the highway side of the wall in order to allow the proposed repairs poses the biggest challenge. In some of the alternates the use of a trench box may be required in order to maintain the roadway in use during construction. A section of temporary paved section may be required in one of the alternates. The installation of rip rap or gabion mattress at the foot of the wall poses a constructability issue due to a lack of equipment access.

Studies

Survey and Topography

The site was surveyed by surveyor Abiud Reyes Rivera on February 2, 2019. The survey plan is included as part of the alternates plan sets. After reviewing the geotechnical recommendations it

Figure 8 Google Earth Aerial photo, 10/20/2017

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 6 may be necessary to increase the surveyed area in order to have the data required to implement

Eng. Jose Despiau’s recommendations.

Geotechnical

Despiau Associates, on February 2019, provided a technical letter in lieu of the completed geotechnical study. The letter is included in the appendix.

Environmental

Various environmental studies were commended as part of the environmental review of the possible impacts of the project these were:

1. Cultural Resources Assessment Phase IA by Sharon Meléndez Ortiz, MA -Included

a. The repair of the landslide and road damage on PR-339, km 1.7 in Mayaguez should have no effect on historic properties, as there are no historic properties within the project area, and the potential of finding previously unknown archaeological resources during project activities is low. No additional archaeological studies are recommended.

2. Habitat Categorization for DNER by Enviro - Logic -Pending

3. Tree Inventory and Mitigation Planting Plan by Enviro – Logic -Pending

4. Biological Assessment by Enviro – Logic -Included

a. No natural habitat of high ecological value observed or found in data base.

5. Survey to Determine the Presence of Asbestos and Lead by Zimmetry Environmental

Management, Corp. -Included

a. No suspected asbestos containing materials were identified during the inspection of the project.

b. No lead-based paint above the regulatory levels were present through the road on the date of the evaluation.

6. Environmental Assessment (FONSI) by Enlace Técnico -Pending

The studies are included in the appendix, the environmental document is in process. In this

Technical Report we base our analysis on the preliminary findings and conclusions of the environmental review.

Technical Solutions

The basic solution for the repairs to the landslide has two parts. The first is addressing the failure of the gabion wall which can be seen by the settlement in the fill behind it. The second is the extension of the retaining structure to the area of the new landslide. The first will be achieved by relieving the load from the existing gabion wall (alternates 1 and 2) or through the dismantling of the wall and replacing it (alternate 3).

Alternate 1

Under this alternate we propose the installation of HP piles with sheet piles (combi wall) or precast concrete panels (soldier piles with lagging wall) to retain the soil. Preliminary sizing would require 12 mts. approximate piles for an unsupported height of 4.5 mts. with a spacing of 1.22 for the combi wall or 1.82 mts. for the lagging wall. The new structure will run the length of the existing wall plus an extra 6.37 mts to account for the new landslide for a total length of approximately

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 7

33.00 mts. The wall will be installed behind the existing gabion wall. This placement will relieve the pressure from the gabion wall and will not require it to be removed. The placement of the wall in this location will require moving the roadway approximately 0.52 mts. to the north. For the purposes of this alternate we will be basing our analysis on the combi wall since the lagging wall would require extensive excavations behind it and will require the temporary widening of the roadway to allow one 4.0 mts. lane to be available during the construction of the project. Our preliminary analysis demonstrated that the combi wall was an easier and less expensive alternate construction.

The existing culvert will be replaced as it will be affected by the excavation behind the wall. The existing inlet will be replaced by a new type 3 curb inlet to allow the passage of leaves and similar debris. The existing concrete paved waterways leading to the culvert will be removed and the area regraded to drain towards the roadway. The trees near the existing inlet will be removed for safety as they will be too close to the travelled way and their leaves may have been one of the main causes to clog the existing inlet entrance and culvert and ultimately for the failure of the gabion wall. On the other side of the roadway opposite the existing inlet an inlet type 3 curb inlet will be built as a resiliency measure. From the inlet the culvert will be routed to skirt the existing gabion wall (L=5.90 mts.) up to a manhole and on to a headwall (approximately

9.15 mts.). from the roadway and below the base of the existing wall. From there a reno mattress or rip rap section will be added to channel the flow downstream and away from the wall. Behind the curb and up to the wall a sidewalk will be built grading towards the roadway. On top of the wall a concrete barrier will be installed. In front of the gabion wall a section of reno mattress or rip rap will be placed to prevent gullies or rutting and erosion.

The existing roadway profile will be adjusted and cross slope corrected, the existing curbs which failed or that may require it because of the grading changes will be replaced.

The work in this section will require the installation of a retaining wall composed of HP Piles and shorter sheet piles, unclassified excavation, unclassified excavation for structures, trench excavation, construction of inlets type 2 and 3, headwall, reno mattress or rip rap, fill, new curb and gutter, reinforced concrete barrier, chain-link fence. cold milling, new pavement structure including base, subbase, bituminous base and surface courses, sidewalk, thermoplastic paint and raised markers, installation of signs and kilometer markers.

The affected roadway section is approximately 75.29 meters.

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 12

Alternate 2

Under this alternate we propose the installation of Sheet Piles to retain the soil preliminary sizing would require 12 mts. approximate piles for an unsupported height of 4.5 mts. The new structure will run the length of the existing wall plus an extra 6.37 mts to account for the new landslide for a total length of approximately 33.00 mts. The wall will be installed behind the existing gabion wall. This placement will relieve the pressure from the gabion wall and will not require it to be removed. The placement of the wall in this location will require moving the roadway approximately 0.52 mts. to the north.

To prevent the flooding of the area the existing culvert should be investigated further, prior to proceeding with the final plans to ascertain its condition and either replace it or simply clean it.

At this time, we assume that it will be replaced. The existing inlet will be replaced by a new type 3 curb inlet to allow the passage of leaves and similar debris. The existing concrete paved waterways leading to the culvert will be removed and the area regraded to drain towards the roadway. The trees near the existing inlet will be removed for safety as they will be too close to the travelled way and their leaves may have been one of the main causes to clog the existing inlet entrance and culvert and ultimately for the failure of the gabion wall. On the other side of the roadway opposite the existing inlet an inlet type 3 curb inlet will be built as a resiliency measure. From the inlet the culvert will be routed to skirt the existing gabion wall (L=5.90 mts.)

up to a manhole and on to a headwall (approximately 9.15 mts.). from the roadway and below the base of the existing wall. The existing roadway profile will be adjusted and cross slope corrected, the existing curbs which failed or that may require it because of the grading changes will be replaced.

The work in this section will require the installation of a sheet pile retaining wall, unclassified excavation, unclassified excavation for structures, trench excavation, construction of inlets type 2 and 3, headwall, reno mattress or rip rap, fill, new curb and gutter, reinforced concrete barrier, chain-link fence. cold milling, new pavement structure including base, subbase, bituminous base and surface courses, sidewalk, thermoplastic paint and raised markers, installation of signs and kilometer markers.

The affected roadway section is approximately 75.29 meters.

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 18

Alternate 3

Under this alternate we propose the installation Mechanical Stabilized Earth (MSE) wall in front of the existing gabion wall. It will be approximately 4.5 mts. High with a depth of approximately

3.6 mts. The new structure will run the length of the existing wall plus an extra 6.37 mts to account for the new landslide for a total length of approximately 30.00 mts. The construction of this wall will require the dismantling of the existing wall. The excavated area behind the wall will permit traffic through one 4.0 mts. lane during construction.

The existing culvert will be replaced as it will be affected by the excavation behind the wall. The existing inlet will be adjusted to allow for the passage of leaves and similar debris. The existing concrete paved waterways leading to the culvert will be adjusted and or replaced. On the other side of the roadway opposite the existing inlet an inlet type 3 will be built as a resiliency measure and all grading in the area of the wall will be designed so that it drains away towards the roadway. The new culvert will cross the street at a shallow depth and drop at the new inlet to exit the new wall at its base. At the culvert discharge point a canal section will be constructed by the addition of gabions to direct flow to the base of the structure where a reno Mattress or rip rap section will be added to channel the 15 mts. downstream and away from it. In front of the new wall a section of reno mattress or rip rap will be placed to prevent gullies or rutting and erosion.

The existing roadway profile will be adjusted and cross slope corrected. The existing curbs will be replaced to account for the new roadway profile and cross section. In the area of the retaining wall, a new guard rail will be installed and over the wall a chain link fence will be installed for safety.

The work in this section will require the installation of a Mechanical Stabilized Earth wall, unclassified excavation, unclassified excavation for structures, trench excavation, construction of an inlet type 1, adjustment to the existing inlet, construction of a special inlet guard, fill, new curb and gutter, guard rail, chain-link fence. cold milling, new pavement structure including base, subbase, bituminous base and surface courses, thermoplastic paint and raised markers, installation of kilometer markers

The affected roadway section is approximately 55.00 meters.

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 24

Evaluation

An evaluation of the discussion above and the plans shows a similarity in the alternates. The basic solution is the use of a retaining structure for the stabilization of the roadway embankment varying in the type of retaining structure which varies from Soldier Piles with Sheet piles (Combi

Wall), Sheet Piles or a Mechanical Stabilized Earth wall system. The management of the runoff is the same, differing in the type of discharge structure and the erosion control measures to adapt to the elevation and position at the outlet

As far as cost is concerned alternate 1 & 2 as it does not require the removal of the existing gabion wall or much excavation behind the wall. Alternate 1 (with Combi walls) is a more economical solution to the use of only sheet piles. Alternate three has the higher cost as it requires both the excavation and the removal of the gabion wall. All other pay items and quantities are approximately the same for the three alternates.

Overall alternate 2 is the least complex due to the fact it is a one step process and alternate 2 requires a two-step process both intrude less into the existing road during construction.

Alternate 3 has most excavation of the alternates plus it requires the dismantling of the existing gabion wall. Alternates 1 and 2 require relocation of the culvert discharge from its present location in the existing gabion wall to the foot of the wall near the most recent landslide and from there to a distance as recommended in the geotechnical technical letter. In alternate 3 the pipe will have its outlet at the bottom of the wall and so only has to comply with the required distance of rip rap or reno mattress. The construction of this reno mattress or rip rap at the foot of the wall poses a challenge to all three alternates due to the severe topography and lack of vehicular access for construction.

From an environmental point of view all three alternates have the same impact although alternates 1 and 2 will require the cutting of at least one of the two trees next to the highway. It is our recommendation that these should be removed as it is our belief that the overflow of the runoff was caused by the clogging of the inlet entrance by the excess of leaves and other vegetable matter from these trees.

Traffic management should be the same for all three alternates. Alternate 3 will require the temporary widening of the road to allow at least one lane during the excavation operations.

Duration of construction should be approximately less for alternate 2 and longer for alternate 3.

Complexity of construction should be slightly less for alternate 2 followed by alternates 1 and lastly alternate 3.

None of the alternates require the acquisition of right of way. The access for the drainage recommendations required by the geotechnical recommendations may require a construction easement.

In the evaluation table which follows, we show the results of this discussion in table form.

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 25

Evaluation Table

Item

WT

Alternate 1 Alternate 2 Alternate 3

Score WT Value Score WT Value Score WT Value

Cost 40 3.66 146.58 3.18 127.20 2.42 96.94

Constructability 20 3 60.00 3 60.00 1 20.00

Environmental 15 2 30.00 2 30.00 3 45.00

Traffic Management 10 3 30.00 3 30.00 3 30.00

Construction Duration 5 3 15.00 3 15.00 1 5.00

Solution Complexity 5 3 15.00 3 15.00 2 10.00

Land Acquisition 5 3 15.00 3 15.00 3 15.00

Totals 100 311.58 292.20 221.94

Scoring Rational 3 -Most favorable to 1 -Least favorable

Cost scoring is presented as a factor of the relative costs of the alternates

Highest scoring is the preferred alternate

Recommendations

A review of the finding in this report will show that alternate 1 has a lower cost and comparable construction time and complexity time to alternate 2. Most important it does not require deep excavations or the dismantling of the existing gabion wall. Based on the evaluation of the alternatives and application of the various weighted factors as shown in the Evaluation Table shown above it is our recommendation that Alternate 1, using the Combi Wall system, be selected for development.

Roberto Rexach Cintron & Associates

Roberto L. Rexach Cintrón, PE

Principal

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 26

Appendix A

Geotechnical Investigation

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 33

Appendix B

Environmental

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 34

Appendix B-1

Cultural Resources Assessment Phase IA

By

Sharon Meléndez Ortiz, MA

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 52

Appendix B-2

Biological Assessment

Enviro – Logic

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 58

Appendix B-3

Survey to Determine the Presence of Asbestos by

Zimmetry Environmental Management, Corp.

PR-339 Km. 1.7 - 1.8 Mayagüez, PR

Emergency Relief Program Page – 66

Appendix B-3

Survey to Determine the Presence of Lead

Zimmetry Environmental Management, Corp

PR-339 Kms. 1.6 to 1.7 Mayaguez, PR

Emergency Relief Program Page – 81

Appendix C

Opinions of Probable Cost

PR-339 Kms. 1.6 to 1.7 Mayaguez, PR

Emergency Relief Program Page – 82

Calc. By: Mario Gonzalez Date: Feb-19

Project No. AC - 8924544 Municipality: Mayagüez

ITEM No. SPEC. No. ITEMS OF WORK UNIT QUANTITY UNIT PRICE AMOUNT

1 201.00 Clearing and Grubbing Cda 1.00 5,000.00$ 5,000.00$

2 0.00 Removal Existing Guard Rail LnM 55.00 30.00$ 1,650.00$

3 202.00 Removal Structures and Obstructions LS 1.00 15,000.00$ 15,000.00$

4 661.00 Project Funding Sign ( 16' x 8") Each 1.00 4,000.00$ 4,000.00$

5 611.00 Field Office and Laboratory Month 4.00 4,200.00$ 16,800.00$

6 638.00 Temporary Conc. Barriers LnM 70.00 160.00$ 11,200.00$

7 638.00 Drums Each 50.00 100.00$ 5,000.00$

8 210.00 Silt Fence LnM 110.00 8.00$ 880.00$

9 638.00 Construction Signs SqM 12.00 275.00$ 3,300.00$

10 0.00 Flag Men (2) Week 16.00 2,200.00$ 35,200.00$

11 632.00 Cleaning /Repair Existing Manholes, Inlets Each 1.00 800.00$ 800.00$

12 301.00 Subbase Course CuM 170.00 35.00$ 5,950.00$

13 304.00 Aggregate Base Course CuM 90.00 55.00$ 4,950.00$

14 401.00 HPM Bituminous B (75) 100 to 399 Tons 110.00 175.00$ 19,250.00$

15 401.00 HPM Bituminous S (75) 0 to 99 Tons 70.00 220.00$ 15,400.00$

16 607.00 Chain Link Fence LnM 55.00 100.00$ 5,500.00$

17 609.00 Concrete Curb and Gutter Type F LnM 95.00 65.00$ 6,175.00$

18 604.00 Inlet Type I, Ht. 1 to 6 Each 3.00 8,000.00$ 24,000.00$

19 201.00 Cutting and Removing Trees (Large) Each 2.00 3,000.00$ 6,000.00$

20 610.00 Concrete Barrier LnM 33.00 235.00$ 7,755.00$

21 608.00 Sidewalks SqM 50.00 65.00$ 3,250.00$

22 0.00 Soldier Piles (Material and Driven) LnM 342.00 330.00$ 112,860.00$

23 0.00 Sheet Piling (material and Driven) SqM 208.00 1,000.00$ 208,000.00$

24 203.00 Borrow Class A (Truck Measure) CuM 0.00 30.00$ -$

25 203.00 Borrow Class B CuM 0.00 35.00$ -$

26 603.00 30" RC Pipe Class III LnM 20.00 200.00$ 4,000.00$

27 205.00 Trench Excavation CuM 70.00 25.00$ 1,750.00$

28 203.00 Unclassified Excavation CuM 300.00 20.00$ 6,000.00$

29 Subsidiary Trench Box Each 0.00 10,000.00$ -$

30 0.00 Concrete Headwall (up to 30" pipe) Each 1.00 1,300.00$ 1,300.00$

31 614.00 Gabions CuM 17.00 400.00$ 6,800.00$

32 151.00 Mobilization LS 1.00 50,000.00$ 50,000.00$

33 618.00 Thermoplastic Pavt Marking (All Colors) LnM 180.00 7.00$ 1,260.00$

Highway Related - Unit Price Source: PRHTA TOTALS SUBMITTED= 589,030.00$ Soldier Pile System - Unit Price Source: Fuentes Pile

Project: ER-HWY-347 Alternate #1

Preliminary Project Cost Estimate

PR-339 Kms. 1.6 to 1.7 Mayaguez, PR

Emergency Relief Program Page – 83

Project No. AC - 8924544 Municipality: Mayagüez

ITEM No. SPEC. No. ITEMS OF WORK UNIT QUANTITY UNIT PRICE AMOUNT

1 201.00 Clearing and Grubbing Cda 1.00 5,000.00$ 5,000.00$

2 0.00 Removal Existing Guard Rail LnM 55.00 30.00$ 1,650.00$

3 202.00 Removal Structures and Obstructions LS 1.00 15,000.00$ 15,000.00$

4 661.00 Project Funding Sign ( 16' x 8") Each 1.00 4,000.00$ 4,000.00$

5 611.00 Field Office and Laboratory Month 4.00 4,200.00$ 16,800.00$

6 638.00 Temporary Conc. Barriers LnM 70.00 160.00$ 11,200.00$

7 638.00 Drums Each 50.00 100.00$ 5,000.00$

8 210.00 Silt Fence LnM 110.00 8.00$ 880.00$

9 638.00 Construction Signs SqM 12.00 275.00$ 3,300.00$

10 0.00 Flag Men (2) Week 16.00 2,200.00$ 35,200.00$

11 632.00 Cleaning /Repair Existing Manholes, Inlets Each 1.00 800.00$ 800.00$

12 301.00 Subbase Course CuM 170.00 35.00$ 5,950.00$

13 304.00 Aggregate Base Course CuM 90.00 55.00$ 4,950.00$

14 401.00 HPM Bituminous B (75) 100 to 399 Tons 110.00 175.00$ 19,250.00$

15 401.00 HPM Bituminous S (75) 0 to 99 Tons 70.00 220.00$ 15,400.00$

16 607.00 Chain Link Fence LnM 55.00 100.00$ 5,500.00$

17 609.00 Concrete Curb and Gutter Type F LnM 95.00 65.00$ 6,175.00$

18 604.00 Inlet Type I, Ht. 1 to 6 Each 3.00 8,000.00$ 24,000.00$

19 201.00 Cutting and Removing Trees (Large) Each 2.00 3,000.00$ 6,000.00$

20 610.00 Concrete Barrier LnM 33.00 235.00$ 7,755.00$

21 608.00 Sidewalks SqM 50.00 65.00$ 3,250.00$

22 0.00 Sheet Piling (material and Driven) SqM 410.00 1,000.00$ 410,000.00$

23 603.00 30" RC Pipe Class III LnM 20.00 200.00$ 4,000.00$

24 205.00 Trench Excavation CuM 70.00 25.00$ 1,750.00$

25 203.00 Unclassified Excavation CuM 330.00 20.00$ 6,600.00$

26 0.00 Concrete Headwall (up to 30" pipe) Each 1.00 1,300.00$ 1,300.00$

27 614.00 Gabions CuM 17.00 400.00$ 6,800.00$

28 618.00 Thermoplastic Pavt Marking (All Colors) LnM 180.00 7.00$ 1,260.00$

29 151.00 Mobilization LS 1.00 50,000.00$ 50,000.00$

Highway Related - Unit Price Source: PRHTA TOTALS SUBMITTED= 678,770.00$ Sheet Piling System - Unit Price Source: Fuentes Pile

Project: ER-HWY-347 Alternate #2

PR-339 Kms. 1.6 to 1.7 Mayaguez, PR

Emergency Relief Program Page – 84

Project No. AC - 8924544 Municipality: Mayagüez

ITEM No. SPEC. No. ITEMS OF WORK UNIT QUANTITY UNIT PRICE AMOUNT

1 201.00 Clearing and Grubbing Cda 1.00 5,000.00$ 5,000.00$

2 0.00 Removal Existing Guard Rail LnM 55.00 30.00$ 1,650.00$

3 202.00 Removal Structures and Obstructions LS 1.00 15,000.00$ 15,000.00$

4 661.00 Project Funding Sign ( 16' x 8") Each 1.00 4,000.00$ 4,000.00$

5 611.00 Field Office and Laboratory Month 4.00 4,200.00$ 16,800.00$

6 638.00 Temporary Conc. Barriers LnM 70.00 160.00$ 11,200.00$

7 638.00 Drums Each 50.00 100.00$ 5,000.00$

8 210.00 Silt Fence LnM 110.00 8.00$ 880.00$

9 638.00 Construction Signs SqM 12.00 275.00$ 3,300.00$

10 0.00 Flag Men (2) Week 16.00 2,200.00$ 35,200.00$

11 632.00 Cleaning /Repair Existing Manholes, Inlets Each 1.00 800.00$ 800.00$

12 301.00 Subbase Course CuM 170.00 35.00$ 5,950.00$

13 304.00 Aggregate Base Course CuM 90.00 55.00$ 4,950.00$

14 401.00 HPM Bituminous B (75) 100 to 399 Tons 110.00 175.00$ 19,250.00$

15 401.00 HPM Bituminous S (75) 0 to 99 Tons 70.00 220.00$ 15,400.00$

16 607.00 Chain Link Fence LnM 55.00 100.00$ 5,500.00$

17 609.00 Concrete Curb and Gutter Type F LnM 95.00 65.00$ 6,175.00$

18 604.00 Inlet Type I, Ht. 1 to 6 Each 2.00 8,000.00$ 16,000.00$

19 201.00 Cutting and Removing Trees (Large) Each 2.00 3,000.00$ 6,000.00$

20 603.00 30" RC Pipe Class III LnM 14.00 200.00$ 2,800.00$

21 205.00 Trench Excavation CuM 70.00 25.00$ 1,750.00$

22 203.00 Unclassified Excavation CuM 1200.00 20.00$ 24,000.00$

23 0.00 Concrete Headwall (up to 30" pipe) Each 1.00 1,300.00$ 1,300.00$

24 614.00 Gabions CuM 150.00 400.00$ 60,000.00$

25 618.00 Thermoplastic Pavt Marking (All Colors) LnM 180.00 7.00$ 1,260.00$

26 0.00 Reinforced Earth CuM 880.00 500.00$ 440,000.00$

27 203.00 Borrow Class B CuM 900.00 35.00$ 31,500.00$

28 0.00 Demilition and Disposal of Existing Gabion Wall LS 1.00 100,000.00$ 100,000.00$

29 151.00 Mobilization LS 1.00 50,000.00$ 50,000.00$

Highway Related - Unit Price Source: PRHTA TOTALS SUBMITTED= 890,665.00$

Project: ER-HWY-347 Alternate #3