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HomeMy WebLinkAbout03-09-20 Drainage and Flooding Committee MeetingJAY MARTIN CHAIRMAN DANNYEARP VICE-CHAIRMAN CHUCK ENGELKEN MEMBER CITY OF LA PORTE DRAINAGE AND FLOODING COMMITTEE MEETING AGENDA STEVE GILL ETT ALTERNATE Notice is hereby given of a meeting of the Drainage and Flooding Committee of the City Council of the City of La Porte, to be held March 9, 2020, in the City Hall Council Chambers, 604 West Fairmont Parkway, La Porte, Texas, beginning at 5:30 pm to consider the following items of business. 1. CALL TO ORDER 2. CITIZEN COMMENT (Generallylimited to five minutes per person; in accordance idth state law, the time may be reduced if there is a high number of speakers or other considerations.) 3. STATUTORY AGENDA (a) Approve minutes of the meeting held on February 10, 2020. [Chairman Martin] (b) Presentation, discussion, and possible action in connection with receipt of a report regarding the Harris County Flood Control District's (HCFCD) and Harris County Precinct 2's current and future plans relating to flooding in the City of La Porte. [Lorenzo Wingate, Assistant Director of Public Works] (c) Presentation, discussion, and possible action regarding the Bayside Terrace Subdivision Improvements Project. [Lorenzo Wingate, Assistant Director of Public Works] (d) Presentation, discussion, and possible action regarding the status of current drainage projects. [Lorenzo Wingate, Assistant Director of Public Works] (e) Presentation, discussion, and possible action to provide staff with direction, if necessary, regarding additional drainage concerns. [Lorenzo Wingate, Assistant Director of Public Works] 4. SET NEXT MEETING 5. COMMITTEE COMMENIIear announcements concerning matters appearing on the agenda; items of community interest; and/or inquiries of staff regarding specific factual information or existing policy from the Committee members and City staff, for which no formal action will be discussed or taken. 6. ADJOURN If, during the course of the meeting and discussion of any items covered by this notice, the Drainage and Flooding Committee determines that Closed or Executive Session of the Committee is required, then such closed meeting will be held as authorized by Texas Government Code, Chapter 551, Section 551.071 - consultation with counsel on legal matters; Section 551.072 - deliberation regarding purchase, exehange, lease or value of real property, Section 551.073 - deliberation regarding a prospective gift; Section 551.074 - personnel matters regarding the appointment, employment, evaluation, reassignment, duties, discipline, or dismissal of a public officer or employee; Section 551.076 - implementation of security personnel or devices; Section 551.087 - deliberation regarding economic development negotiation; Section 551.089 - deliberation regarding security devices or security audits, and/or other matters as authorized under the Texas Government Code. If a Closed or Executive Session is held in accordance with the Texas Government Code as set out above, the Drainage and Flooding Committee will reconvene in Open Session in order to take action, if necessary, on the items addressed during Executive Session. Persons with disabilities who plan to attend this meeting and who may need auxiliary aids or services are requested to contact the City Secretary's office (281-470-5019), two working days prior to the meeting for appropriate arrangements. Councilmembers may attend in numbers constituting a quorum. This is a Drainage and Flooding Committee Meeting at which there will be no deliberation or formal action taken by City Council as a governmental body. CERTIFICATE I, Lee Woodward, Qty Secretary, do hereby certify that a copy of the March 9, 2020, Drainage and Flooding Committee agenda was posted on the Qty Hall bulletin board, a place cornenient and readily accessible to the general public at all times, and to the City's website, www.LaPorteTXgov, in compliance with Chapter 551, Texas Go\,emment Code. DATE OF POSTING TIME OF POSTING TAKEN DOWN Lee Woodward, City Secretary JAY MA RTI N Chairman DANNY EARP Vice -Chairman CHUCK ENGELKEN Member STEVE GILLETT Alternate Member MINUTES OF THE DRAINAGE AND FLOODING COMMITTEE MEETING FEBRUARY 10, 2020 The Drainage and Flooding Committee of the City of La Porte met on Monday, February 10, 2020, at the City Hall Council Chambers, 604 West Fairmont Parkway, La Porte, Texas, at 5:00 p.m. to consider the following items of business: Committee Members present: Jay Martin, Chuck Engelken, Danny Earp, (Alternate Gillett available if needed) Committee Members absent: None Council -appointed officers present: Corby Alexander, City Manager; Lee Woodward, City Secretary CALL TO ORDER - Chairman Martin called the meetina to order at 5:00 o.m. 2. CITIZEN COMMENT (Generally limited to five minutes per person, in accordance with state law, the time may be reduced if there is a high number of speakers or other considerations. Kevin Lewis spoke about issues in the watershed around his home in Bay Harbor. 3. STATUTORY AGENDA (a) Approve minutes of the meeting held on January 13, 2020. [Chairman Martin] Committee member Engelken moved to approve the minutes; the motion was adopted, 3-0. (b) Presentation, discussion, and possible in connection with receipt of a report regarding the Harris County Flood Control District's (HCFCD) and Harris County Precinct 2's current and future plans relating to flooding in the City of La Porte. [Lorenzo Wingate, Assistant Director of Public Works] Mr. Wingate said he expected there would be HCFCD action by March. (c) Presentation, discussion, and possible action regarding the Bayside Terrace Subdivision Improvements Project. [Lorenzo Wingate, Assistant Director of Public Works] Mr. Wingate provided a proposal for engineering services regarding the Bayside Terrace Subdivision from Halff Associates, chosen via RFQ and expected to be on the February 24 City Council agenda. (d) Presentation, discussion, and possible action regarding the status of current drainage projects. [Lorenzo Wingate, Assistant Director of Public Works] Mr. Lewis was allowed to speak about the experience in his neighborhood. Mr. Wingate reported on the work being done and Chairman Martin let Mr. Lewis know that there would be an update at next month's meeting. Committee Member Earp requested an update on the desilting for the Lomax/F101 area. Ray Mayo, Public Works Director, said work was being done on approximately 2000' of ditch at the airport. (e) Presentation, discussion, and possible action to provide staff with direction, if necessary, regarding additional drainage concerns. [Lorenzo Wingate, Assistant Director of Public Works] February 10, 2020 - Drainage and Flooding Committee Minutes Committee Member Earp asked that the additional work on the north side of the airport consistently be included in and discussed with the monthly report. Mr. Wingate said a resident had requested for F216 (Little Cedar Bayou) from Fairmont to Broadway to be selectively cleared and desnagged, so staff was going to do a visual inspection initially. Chairman Martin confirmed that the drainage, less detention ponds, at Morgan's Landing, was overseen by the City and that now the development was only finishing up internal drainage, and that staff had no concerns. 4. Set next meeting - The next meeting date was set for March 9. Committee Member Comments — There were no comments. ADJOURN — The meeting was adjourned without objection at 5:27 p.m. Lee Woodward, City Secretary February 10, 2020 - Drainage and Flooding Committee Minutes REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Agenda Date Requested: March 9, 2020 Requested By: Lorenzo Wingate, P.E., C.F.M. Department: Public Works Report i' Resolution ir" Ordinance Exhibits: HCFCD Drainage Network Map Appropriation Source of Funds: Account Number: Amount Budgeted: Amount Requested: Budgeted Item: SUMMARY ir Yes ir No Receive report regarding Harris County Flood Control District's (HCFCD) and Harris County Precinct 2's current and future plans relating to flooding in the City of La Porte. RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. Alexander, City Manager Date 150 x harriscoun en7t,or Search"'____ ^ ��PS 'F'r'' �� ,. m �" , nL arty of La Paie" TX Public lrr' or... VI HCFCLI Harris Cuuanty Floc Harris County Flood Educet... 1 � File Edit Vierno Favorites Too]s: Help- X l° .i'CoIP'raert ISO Selle .. 'TCEHenyayTCE,,C,r Links CneSclutian PA �City of La Pcek T PuaVrc,,, mCede of Ordinances La P... ExecuTniexT3 Login Ends guides, and nieasur.., Javlllne Pa5swmrd Reset Javlllny Online Conversion eVu... 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REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Agenda Date Requested: March 9, 2020 Requested By: Lorenzo Wingate, P.E., C.F.M. Department: Public Works Report i' Resolution ir" Ordinance Exhibits: Consultant Proposal Appropriation Source of Funds: Account Number: Amount Budgeted: Amount Requested: Budgeted Item: SUMMARY ir Yes ir No Halff Associates, Inc. prepared a proposal to provide engineering services for preliminary engineering, final design, bidding, construction phase services for the Bayside Terrace Subdivision Improvements Project. The proposal was presented to Council at the February 24, 2020. Staff will provide an update on Council's decision and the current project status. RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. Alexander, City Manager Date January 29, 2020 Mr. Lorenzo Wingate City Engineer 2963 N. 23rd Street LaPorte, TX 77571 RE: Engineering Services Fee Proposal Bayside Terrace Subdivision Drainage Improvements Revision 3 Dear Mr. Wingate: Halff Associates Inc. (Halff) is pleased to submit our proposal to provide engineering services for the Bayside Terrace Subdivision Drainage Improvements project for the City of La Porte. The purpose of the project is to increase capacity and address existing flooding issues within the subdivision by regrading roadside ditches and upsizing the existing storm sewer system. The project area is generally bounded by Pine Bluff Drive to the north, S. Broadway Street to the west, Dwire Drive to the south, and the San Jacinto Bay to the east. This proposal will address development of a preliminary engineering report (PER), final design plans, and construction phase services. Additional services include geotechnical analysis and environmental analysis. In the PER, Halff will analyze existing conditions and evaluate proposed alternatives to recommend the most feasible design based on various factors including estimated construction cost, available right-of- way and easements, constructability, conflicts with existing utilities, and inconvenience to residents. Alternatives will be presented to the City of La Porte for determination and approval of the final design. The purpose of the final design phase is to develop signed and sealed construction plans based upon findings in the PER. Existing Conditions: There are approximately 227 total structures within the "At -Risk" project area, including 206 residential homes and 21 commercial structures. All 227 structures exist within a FEMA designated Special Flood Hazard Area. Approximately 17 structures were damaged from Hurricane Harvey in 2017, resulting in over $1.1 million dollars in damages. The existing stormwater collection system is comprised of roadside ditches and underground reinforced box culvert storm sewer to convey flow to two outfall points: an underground collection system along Bayside Drive at the center of the subdivision, and a secondary collection system running along the southeastern boundary of the subdivision. Both outfalls terminate at San Jacinto Bay. Access to the southeastern collection system is limited; the system is located within fenced -in backyards of properties within the subdivision and does not exist within a utility easement nor public right-of-way. During intense rainfall events, the capacity of the southern system is exceeded, and the backwater condition inundates sections of the neighborhood upstream. 'KK: 11SNORTH, `GI1 L D ➢E"L (9361) R5616832 WJVVVH/tIfu,'W p[,;:O ditQ I_ IX /1 (:r7..J..,i"01 FAX E 6i T56... W4Z,3 f ILII 4' r Mr.. Lorenzo WC ingate City of La Porte January 29, 2020 Revision 3 Page 2 Proposed Conditions: Based on 1D hydrologic and hydraulic modeling efforts, Halff will determine and evaluate cost-effective solutions to provide relief to drainage areas within the neighborhood. Modifications may include roadside ditch regrading and upsizing the existing storm sewer system to increase its capacity. The basic services are divided into the following tasks: Basic Services 1. Preliminary Engineering Report 2. Design Phase Services 3. Construction Phase Services Total Basic Services: Additional Services: 4. Geotechnical Analysis 5. Environmental Analysis Total Additional Services: $ 29,844.00 (Lump Sum) $ 192,297.00 (Lump Sum) $ 10,242.00 (Lump Sum) $ 232,383.00 $ 10,000.00 (Lump Sum) $ 10,000.00 (Lump Sum) $ 20, 000.00 Total Basic & Additional Services: $ 252,383.00 Line items are intended to be authorized and released contingent on available funding. We appreciate the opportunity to be of service to you and the City of La Porte. Please feel free to contact me if you have any questions or comments concerning this proposal. Sincerely, Halff Associates, Inc. Long Nguyen, P.E. Public Works Team Leader Attachments: Attachment "A": Detailed scope of services Attachment "B": Detailed level of effort Attachment "C": Vicinity map Attachment "D": Project schedule Cc. File Approved by: Corby D. Alexander City Manager 111 Mx. Lorenzo Wingatemom CiLv of La Porte MAN HALFFJanuary 29, 2020 Revision 3 Page 3 Attachment "A" The purpose of this proposal is to develop a PER, final design plans, and construction phase services for the Bayside Terrace Subdivision Drainage Improvements project. The proposed project area can be seen in Attachment "C". SCOPE OF SERVICES Preliminary Design Phase Services: Task 1 — Preliminary Engineering Report (PER) The Preliminary Engineering Report will summarize findings from the drainage analysis and present alternative options to the City of La Porte for their approval. The PER may consider presenting the project in multiple phases based upon available funding. Preliminary Engineering Report services include: a) Reviewing all available record drawings and drainage reports to determine potential utility conflicts and constraints. b) Performing existing conditions hydrologic analysis and delineate existing drainage basins to determine drainage boundaries, flowrates, and outfall locations. Existing conditions hydraulic analysis will quantify water surface elevations of roadside ditches. c) Evaluating three proposed alternatives: • Concrete or asphalt with curb and gutter/storm sewer • Concrete or asphalt with roadside ditch system • Concrete or asphalt with combination storm sewer and roadside ditch system d) Providing estimated construction costs for each alternative developed. e) Providing provide a final recommendation to the City of La Porte for their approval in the form of a report. f) Prepare presentation and attend Drainage Committee meeting to present findings and recommendations. Final Design Services: Task 2 - Topographic Survey Topographic survey will be delivered in AutoCAD Civil 3D format with field notes and ASCII files of all points obtained. A DTM will be created to generate 1 -foot contours. a) Full topographic survey from ROW to ROW with cross-sections at 100 -ft intervals, including: all existing appurtenances, water meters, valves, valve boxes, fire hydrants, improvements within the ROW (landscaping, mailboxes, etc.), trees, driveways, storm and sanitary flowlines, ditch and culvert flowlines, pipe sizes and materials, power poles, fences, etc. Obtain private utility records and incorporate into base drawing. Delineate public ROW based on land property monuments and deed records. Provide RPLS signed and sealed survey control maps in PDF format Task 3- Project Management for Final Design Project management services include: a) Project progress meetings, design review meetings, and conference calls b) Project site visits c) Coordination and communication with private utility owners to resolve conflicts Task 4: Civil Design Services Mr. Lorenzo Wingate CiLy of La Porte January 29, 2020 Revision 3 Page 4 All design work will be completed using AutoCAD Civil 3D and will adhere to City of La Porte standards found in Chapter 5 of the PICM Stormwater Design Criteria Manual. Plans, specifications, and estimates will be submitted in three phases: 60%, 90%, and final. The drainage design will be based upon decisions approved by the City of La Porte in the PER phase. Civil design services include: a) Development of general project drawings: cover sheet, sheet index, legend, general notes, existing and proposed typical sections, and project layouts b) Development of paving and drainage, and utility drawings: utility plan and profiles and paving/drainage plan and profiles. Paving and drainage plan and profile sheets will contain all roadway design and drainage design, including ditches, storm sewer, and cross culverts. Utility plan and profiles will contain proposed water line and all related appurtenances. c) Development of miscellaneous drawings: drainage area maps, hydraulic computations, SWPPP layouts, traffic control plans, traffic control details; modification of City of La Porte water line details, SWPPP details, and storm sewer details as needed. d) Preparation of engineer's estimate of probable construction cost at each submittal. Quantities will be verified prior to each submittal. Halff will prepare the cost estimate and quantities using City of La Porte pay items and specifications. e) Assist with preparation of project manual including applicable technical specifications, general provisions, special specifications, and bid items with each submittal. The City of La Porte will provide front end documents. Task 5: Bid Phase Services a) Attendance at the pre-bid meeting and compilation of notes for distribution. b) Preparation of pre-bid responses and responding to questions. c) Attendance at the bid review meeting and providing input on the selection process. d) Preparation of bid recommendation letter and bid tabulation summary. Construction Phase Services Task 6: Construction Phase Services a) Responding to submittals as requested by the City of La Porte b) Responding to RFI as requested by the City of La Porte c) Design changes/plan revisions as requested by the City of La Porte d) Preparation of record drawings, maintenance of RFI and submittal log IIIMx. Lorenzo Wingate momCiLv of La Porte MAN HALFFJanuary 29, 2020 Revision 3 Page Additional Services: Task 7: Geotechnical Analysis a) Geotechnical analysis services include: evaluating the soil and groundwater conditions along the project alignment and providing geotechnical recommendations for proposed utility construction. Pavement recommendations will also be provided. Task 8: Environmental a) Prepare a desktop environmental constraints analysis to provide supporting documentation for and complete the EHP Checklist. This does not include agency coordination or consultation, permitting, or NEPA environmental document preparation and clearance. Services Not Included: • Reviewing change orders or pay estimates • Level of service verification in modeling efforts • Construction staking • Analysis of detention facilities List of Assumptions: All consultant fees shown on are considered to be lump sum unless otherwise noted. The City of La Porte will provide any procedures, policies, data collection systems, engineering guidelines, standards, and design criteria that will be required for this project. The City of La Porte will retain ownership of any deliverables and electronic files created for this project but will not be supplied with software applications or licenses as part of this project. The scope of services does not include any preparation or attendance at any public meetings pertaining to the project design or construction. Draft - For Review Attachment "B" Bayside Terrace Subdivision Drainage Improvements Date: 11/27/2019 Revision 1: 1/20/2020 Revision 2: 1/27/2020 Principal / Senior CADD Managing Project Manager Project Engineer Technician Admin Revision 3: 1/29/2020 Director Total Hours Total Cost HOURLY RATE $ 210 $ 165 $ 114 $ 75 $ 60 ITEM 1: PRELIMINARY DESIGN PHASE SERVICES: Task 1 — Preliminary Engineering Report 1.A Review record drawings and drainage reports 2 8 $ 1,242 1.13 Existing Conditions Hydraulics and Hydrology 8 40 $ 5,880 1.0 Proposed conditions analysis 16 40 $ 7,200 1.D Develop alternative and estimated construction costs 8 40 $ 5,880 1.E Preliminary Engineering Report 1 16 40 $ 7,410 15 Prepare presentation and attend Drainage Committee meeting to present findings and recommendations 8 8 $ 2,232 Subtotal Hours 1 58 176 0 0 Subtotal Fee $ 210 $ 9,570 $ 20,064 $ - $ 29,844 TOTAL FEES: PRELIMINARY DESIGN PHASE SERVICES: $ 29,844 ITEM 2: FINAL DESIGN SERVICES: Task 2 — Topographic Survey Services 2.A Topographic Survey of Project Area $ 51,000 Subtotal Hours Subtotal Fee $ - $ - $ - $ - $ 51,000 Task 3 — Project Management 3.A Project Progress Meetings 8 8 $ 2,232 3.13 Project Site Visits 8 8 $ 2,232 3.0 Coordination with private utilities 8 $ 1,320 Subtotal Hours 0 24 16 Subtotal Fee $ - $ 3,960 $ 1,824 $ 5,784 Task 4 - Civil Design Services 4.A General Project Drawings Title Page 1 2 2 5 $ 543 Index of Sheets 1 2 2 5 $ 543 Legend & Abbreviations 1 2 2 5 $ 543 General Notes 1 2 2 5 $ 543 Existing and Proposed Typical Sections 1 4 12 17 $ 1,521 Project Layouts 1 4 12 17 $ 1,521 4.13 Plan and Profile Drawings Paving and Drainage Plan and Profiles (approximately 28 sheets) 4 56 160 360 580 $ 55,320 Utility Plan and Profiles (approximately 28 sheets) 4 56 160 360 580 $ 55,320 1/29/2020 Page 1 of 1 Bayside Terrace 1:\34000s\34805\Prospect\001\Admin\Contracts\ Bayside Terrace Subdivision Drainage Improvements LOE R3.xlsx Draft - For Review Attachment "B" Bayside Terrace Subdivision Drainage Improvements Date: 11/27/2019 Revision 1: 1/20/2020 Revision 2: 1/27/2020 Principal / Senior CADD Managing Project Manager Project Engineer Technician Admin Revision 3: 1/29/2020 Director Total Hours Total Cost HOURLY RATE $ 210 $ 165 $ 114 $ 75 $ 60 4.0 Miscellaneous Drawings Drainage Area Maps 2 12 16 30 $ 2,898 Traffic Control Plan 2 12 24 38 $ 3,498 Traffic Control Details 2 4 4 10 $ 1,086 SWPPP Layout 2 12 16 30 $ 2,898 Modifcation of SWPPP Details 1 2 4 7 $ 693 Modifcation of Water Line Details 1 2 4 7 $ 693 Modifcation of Storm Sewer Details 1 2 4 7 $ 693 4.D Estimate of Probable Construction (60%, 90%, and Final) 4 16 20 $ 2,484 4.E Technical Specifications/Project Manual (60%, 90%, and Final) 4 16 20 $ 2,484 Subtotal Hours 8 137 414 824 1383 Subtotal Fee $ 1,680 $ 22,605 $ 47,196 $ 61,800 $ 133,281 Task 5: Bid Phase Services 5.A Attend pre-bid meeting & compile notes 2 2 4 $ 558 5.13 Prepare pre-bid responses & respond to questions 2 2 4 $ 558 5.0 Attend bid review meeting 2 2 4 $ 558 5.D Prepare bid recommendation letter & bid tabulation 2 2 4 $ 558 Subtotal Hours 0 8 8 0 16 Subtotal Fee $ - $ 1,320 $ 912 $ - $ 2,232 TOTAL FEES: FINAL DESIGN SERVICES $ 192,297 ITEM 3: CONSTRUCTION PHASE SERVICES: Task 6: Construction Phase Services 6.A Respond to submittals 2 16 18 $ 2,154 6.13 Respond to RFI" 8 8 $ 1,320 6.0 Revisions 4 16. 20 $ 2,484 6.D Preparation of Record Drawings, RFI Log, and Submittal Log 4 16 24 44 $ 4,284 Subtotal Hours 0 18 48 24 90 Subtotal Fee $ - $ 2,970 $ 5,472 $ 1,800 $ 10,242 TOTAL FEES: CONSTRUCTION PHASE SERVICES $ 10,242 TOTAL FEES: PER, FINAL DESIGN, & CONSTRUCTION PHASE $ 232,383 1/29/2020 Page 1 of 1 Bayside Terrace 1:\34000s\34805\Prospect\001\Admin\Contracts\ Bayside Terrace Subdivision Drainage Improvements LOE R3.xlsx Draft - For Review Attachment "B" Bayside Terrace Subdivision Drainage Improvements Date: 11/27/2019 Revision 1: 1/20/2020 Revision 2: 1/27/2020 Principal / Senior CADD Managing Project Manager Project Engineer Technician Admin Revision 3: 1/29/2020 Director Total Hours Total Cost HOURLY RATE $ 210 $ 165 $ 114 $ 75 $ 60 ADDITIONAL SERVICES: Task 7: Geotechnical Analysis 7.A Geotechnical Analysis $ 10,000 Subtotal Hours 0 0 0 0 0 Subtotal Fee $ - $ - $ - $ - $ 10,000 Task 8: Environmental Analysis 8.A Environmental Analysis $ 10,000 Subtotal Hours 0 0 0 0 0 Subtotal Fee $ - $ - $ - $ - $ 10,000 TOTAL FEES: ADDITIONAL SERVICES $ 20,000 ITUTAL FEES: > FINAL DESIGN, C0111 SE SERVICES, AND $ 252 383 1/29/2020 Page 1 of 1 Bayside Terrace 1:\34000s\34805\Prospect\001\Admin\Contracts\ Bayside Terrace Subdivision Drainage Improvements LOE R3.xlsx 1 11111111 ��,�3ays���de a ce Plan Duration I Actual Start % Complete Actual (beyond plan) %Complete (beyond plan ACTIVITY IPLAIN STAIRT IRATI WEEKS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 ffata �o 11-ection - and Review 1 2 Developing and Modeling 3 6 I and Submittal 9 4 Surveying 10 6 Geotechnical Investigation 10 8 Environmental Permitting 10 8 Final Design 16 24 Bid Phase Services 40 4 Construction Phase Services 44 52 REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Agenda Date Requested: March 9, 2020 Requested By: Lorenzo Wingate, P.E., C.F.M. Department: Public Works Report i ' Resolution i ' Ordinance Exhibits: Project map Project update chart Harris County Drainage Network Map Airport Drainage Improvements Appropriation Source of Funds: Account Number: Amount Budgeted: Amount Requested: Budgeted Item: ir Yes ir' No SUMMARY Refer to attached exhibit(s) for updates on various drainage projects throughout the City. RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. Alexander, City Manager Date The City of La Porte Drainage Projects 2019 N NUM BER PROJECT 1 Brookglen Flooding Mitigation Analysis 2 Bayside Terrace Drainage Improvements 3 Lomax/F101-03-00 Drainage Channel Feasibility Study 4 Little Cedar Bayou F216 Phase III Improvement 5 6th Street Madison to Main Paving and Drainage 6 8th & D Storm Water Conveyance Improvements 7 Bob's Gully 8 Little Cedar Bayou F216 Phase II Improvements 9 Coupland Drive 10 Airport On-site Drainage Improvements R6 0 0.5 1 2 Miles �mm DRAINAGE PROJECTS COLP PROJECT PROJECT PHASE (Feasibility/Preliminary Potential Grant Potential COLP Estimated On NO. PROJECT DESCRIPTION Status Budgeted °k Complete MANAGER Design/Final Design/Bidding/Construction) Funding Cost Share Completion Date Schedule Amount The 2009 City-wide Drainage Study identifies the Brookglen subdivision as an area with Staff working with HCFCD to develop regional solution. HCFCD Brookglen Flooding significant drainage/flooding problems, attributed to a mixture of inadequate sewerage insufficient the B112-00-00 Channel. Compounded currently finalizing Technical Update. Staff submitted HMGP grant 1 Public Works and channel capacity within Feasibilityapplication for supplemental funding on October 17, 2018. $4,000,021.50 $1,000,005.38 $275,000.00 March 2022 10% No Mitigation Analysis improvements recommended within the City-wide Drainage Study could reduce the flood Application pending TDEM selection. Awarded projects are risk within the Brookglen area. This analysis would expand upon the recommendations anticipated to begin as early as January 2020. provided within 2009 study. Approximately 800 linear feet of RCP pipe, ranging in size from 15" to 24", exists within the Bayside Terrance Subdivision, which has not been properly maintained due to access issues attributed to limited access to infrastructure, provided within a five foot utility Bayside Terrace easement. Portions of Hamilton Street and Fondren Street utilize this system to convey Staff submitted HMGP grant application for supplemental funding on 2 Drainage Public Works stormwater to its outfall point of Galveston Bay. The system fails to function properly, Feasibility November 26, 2018. Application pending TDEM selection. Awarded $2,200,000.00 $550,000.00 $100,000.00 March 2022 0% No Improvements causing flooding within the adjacent portion(s) of the subdivision. A proposed drainage projects are anticipated to begin as early as January 2020. study would discuss feasibility of rerouting this flows from the 800 feet of RCP, towards Bayside Dr. and utilizing the existing system within Bayside Dr. to convey the storm water within the existing system. Harris County Flood Control District's (HCFCD) F101-06-00 Channel system conveys Staff submitted HMGP grant application for supplemental funding on storm water runoff from the Lomax area and ultimately outfalls into Lower San Jacinto November 26, 2018. Application pending TDEM selection. Awarded Loma)dF101-03-00 Bay. The downstream section of the channel has been improved to ultimate capacity. An projects are anticipated to begin as early as January 2020. HCFCD 3 Drainage Channel Public Works existing pipeline corridor, containing several pipelines located at depths ranging from Feasibility has completed Technical Update and is in procurement phase for $3,200,155.00 $800,038.75 $150,000.00 March 2022 10% No Improvements approximately 2' to 18', cross the channel, limiting the depth of potential channel PER. Request to award engineering contract is anticipated to be improvements. Moderate/heavy rain events, compounded with backwater conditions from placed on Januray 2020 Commissioner's Court meeting agenda by this section of the channel, contributes to wide -spread flooding within the Lomax Area. HCFCD. Phase I and Phase II Improvements to Little Cedar Bayou, from Hwy 146 to Madison, have either been completed or are currently awarded for construction. Phase I and Phase 11 improvements include, but are not limited to, excavating and disposing off- site soil as required for the new channel alignment, clearing and grubbing, demolition of existing structures, erosion control, and site restoration for approximately 5,533 LF of channel. Approximately 4,680 LF of channel remains unimproved upstream, with those improvements slated to be included within this project, to be considered Phase 111. Survey Staff submitted HMGP grant application for supplemental funding on Little Cedar Bayou Y data has been collected on this most upstream section. Routine maintenance of clearing trees, December 20, 2018. Application pending TDEM selection. Awarded 4 F216 Phase III Public Works overgrowth, and obstructions; minor erosion control and slope stabilization; and desilting is planned to maintain existing conveyance capacity. Those maintenance Feasibility projects are anticipated to begin as early as January 2020. Staff has $2,500,000.00 $625,000.00 $825,000.00 March 2022 0% No Improvements operations are projected to begin late 4th quarter 2018 or earl 1st quarter 2019 calendar p p l 9 q Y q ( requested a budgetary proposal from consultant for Phase III year). improvements, including consideration of H Street drainage issue. Proposal expected week of Thanksgiving 2019. The following Phase III mitigation action is proposed, as recommended within the Hydraulic Analysis for Little Cedar Bayou Watershed HCFCD Unit F216-00-00: lowering the flow line of the Bayou 1 - 2 feet, from W. Madison to Sens Rd. Current channel side slopes would be modified to achieve 3:1 side slopes from W Madison St. to Sens Rd. An estimated 200,000 cubic yards are to be excavated from the channel. Over excavation is provided to yield sufficient storage volume in the pond after siltation and build-up in the pond bottom. The segment of 6th St from W. Madison St to W. Main St is considered part of Old La Executed contract with GLO effective March 9, through 6th Street Madison t0 Porte, which was generally noted in the City -Wide Drainage Study as not having sufficient August 5, 2021. Consultant discussed preliminary modeling results 5 Main Paving and Public Works storm sewer capacity due to undersized storm sewer, undersized storm inlets, or not Feasibility with staff 10/28/2019. Consultant proceeding with finalizing draft $3,798,532.30 $125,000.00 $1,140,000.00 August 2021 3% Yes Drainage 9 enough storm inlets. RPS -Klotz provided an analysis of the existing storm sewer system to of PER. Staff received preliminary draft agreement for review from and identified problem areas within the project limits. Additional analysis is required to Harris County for $3.4M allocation on 10/25/2019. determine most efficient improvement alternative. 8th & D Storm Water The area generally bounded by 8th Street to the west, Main Street to the north, 5th Street 6 Conveyance Public Works to the east, and D Street to the south experiences flooding during heavy rain events due Preliminary Design This project has been incorporated into the 7th Street Rehabilitation N/A N/A $139, 340 / $1,850,000 lune 2021 10% Yes Improvements to undersized culverts within the area. Increasing culvert sizes within the area will provide additional conveyance capacity within the existing open ditch system. Project. Survey and PER authorized by council on June 10, 2019. Obtained drainage easement along East B Street ROW in Morgan's Point from Boys and 7 Bob's Gully Public Works Girls Harbor. Coordinate with Harris County Flood Control & the Army Corp of Engineers Feasibility Analysis completed. Concluded that existing channel has capacity N/A N/A $50,000.00 September 2019 95% Yes to determine maintenance responsibilities. Consultant to provide technical memo for current conditions. analyzing channel capacity. A proposed conditions hydraulic model was developed during the preliminary design for the N P Street Culvert Improvement Project, which recommended replacing the upstream portion of the existing composite structure at N P Street, with structures matching the downstream portion of the composite structure. That project allows for full utilization of the structure's capacity, as well as protect the channel during rainfall events that produce Battleground Estates higher amounts of runoff. Per the recommendations of the Phase 1 report, a more detailed Phase 2 engineering analysis of segments F101-00-00 and F101-08-00, that are Staff submitted HMGP grant application for supplemental funding on $ Phase II Public Works upstream of N P Street, as well as an evaluation of the roadside ditch drainage conduits Feasibility December 20, 2018. Project is on hold; awaiting supplemental grant $880,500.00 $220,125.00 $65,000.00 August 2022 0% No within Battleground Estates should be performed to identify necessary improvements to funding. address structural flooding within the area. The more detailed study would evaluate the impacts of culverts located upstream of N P Street, along F-101-00-00 resulting from the 10-, 50-, and 100 -year rain event. Channel improvements, and increasing culvert sizes to provide sufficient capacity within culverts along the roadside ditches are the anticipated mitigation efforts. The proposed storm sewer improvements include re -sloping Coupland Drive to drain towards inlets located throughout the subdivision. The inlets will drain into proposed storm sewer ranging in size from 24" to 30" RCP. This storm sewer will then flow underneath the existing roadside ditch along L Street to a combined outfall with the existing roadside ditch HDR is awaiting comments from TWDB before beginning 60 9 Coupland Drive Public Works to Big Island Slough. The proposed storm sewer underneath the existing ditch on L Street Preliminary Design design. Construction to be incorporated into Lomax Lift Station N/A N/A $1,110,000.00 July 2022 30% Yes will be 42" RCP and the combined outfall will need to be a 60" RCP. These improvements Consolidation Project. will result in no net fill within the Big Island Slough 100 -year floodplain. The proposed storm sewer was sized for the 5 year storm event, per the City of La Porte drainage criteria. CO PROJECT PROJECT PHASE (Feasibility/Preliminary Potential Grant Potential COLP Estimated On NO. PROJECT DESCRIPTION Status Budgetet ed °k Complete MANAGER Design/Final Design/Bidding/Construction) Funding Cost Share Completion Date Schedule Amount Airport On-Site On-site and offsite study determined there is no impact from airport drainage run off to the 10 Drainage Public Works area north(Lomax) of the airport. The study determined there is impact to the Glen Bidding Design phase has been completed. Bid opening held August 29, $2,200,000.00 $244,500.00 $248,467.00 March 2020 0% Yes Improvements Meadows Subdivision. Onsite detention and increased capacity will be designed to mitigate the impact on Glen Meadows. 01 150 x harriscoun en7t,or Search"'____ ^ ��PS 'F'r'' �� ,. m �" , nL arty of La Paie" TX Public lrr' or... VI HCFCLI Harris Cuuanty Floc Harris County Flood Educet... 1 � File Edit Vierno Favorites Too]s: Help- X l° .i'CoIP'raert ISO Selle .. 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INSERT "A' SCALE - I" . 1000' Concentrotior �� LA PORTE `� \\ AIRPORT j \ ����•, ez5Ci > 1 0 �E TOTAL FLOW LIMITED BY DITCH CAPACITY OF 33.9 C.FS.-1-�L�1-_L i SPENCER HWY. 575+00 SBS WO 59500 605 X00 6r5 +00 6'25;4)0 B3I SYSTEM "8C" 831 826 SEE INSERT "A" SEE INSERT "A" t � O �D mil + N N N W Z W J z T J U = Q Q Flow �l_ ._ STATE DEPARTMENT OF HIGHWAYS ?1E Tfk AND PUBUC TRANSPORTATION SPENCER HIGHWAY w. a a DRAINAGE SYSTEM MAPS STA. 615+00 TO STA. 625+09.82 71 SHEET 15 OF 25 FEDERAL AID PROJECT NO. S� ' 6 c� n � emfr e- at SCALE - r• 50' sT�TE " couNr r�� TUNS 12 HARRIS mMrur.i CONT. SECT. JOB 40400 NO. snrrw"rrrrr�rr..�..w.w 8020 12 011 MH - rrerrueoa Drainage Areas "C" Foelo► Ruin Time of Tolal Taol Intensity Flow Paved Commer " Unimpror. CA Frequency (In./Mr.) (CFS) Flow No. Acres 0.90 Obs 0.35 (Years) (Mm.) (CFS) 825 180.00 _ 180.00 63.00 2 41 3.03 191.00 33.9;E B26 2.07 2.0T 0.72 2 10 6.76 4.90 4.90 827A 0.27 0.2T 0.24 2 10 6.76 1.62 3.T2 8278 0.48 0.48 0.31 2 10 6.76 2.10 829A 0.48 0.48 0.43 2 f0 6.76 2.91 6.90 B29B 0.91 0.91 0.59 2 !0 6.76 3.99 B 31 7.15 7.I S 2.50 2 10 6.76 16.90 16.90 B32A 0.40 0.40 0.36 2 10 6.76 2.43 5.81 8328 0.77 0.77 0.50 2 10 6.76 3.38 Drainage Areas "C" Factor Total Ram Time of Tao! Pares ertio UnimproY. CA Ffe�Y (In./Hr.) I . � Na Acres (Yeors) (Mirk) (CFS) AS' 0.90 0.65 0.35 828A 829 i 0.24 mss _a N86.54as"E � _-r[,77 20i00-�_� 6.76 COI•:, 2T 625{00 _ - - -- - I------- 833 0.82 0.53 830 10 6.76 3.58 5.20 B30A 0.51 0.51 I 0.46 2 10 6.76 3.11 8308 1.53 1.53 0.99 2 10 6.76 6.69 9.80 833A 0.43 1 z 2 10 6.76 Na Acres (Yeors) (Mirk) (CFS) Flow (CFS) 0.90 0.65 0.35 828A 0.27 0.2T 0.24 2 10 6.76 1.62 8288 0.82 0.82 0.53 2 10 6.76 3.58 5.20 B30A 0.51 0.51 I 0.46 2 10 6.76 3.11 8308 1.53 1.53 0.99 2 10 6.76 6.69 9.80 833A 0.43 � ! 0.39 2 10 6.76 2.64 B338 __0.43 _ _ 0.84 2 10 6.76 5.67 6.31 11 0 400 800 Feet Structure Type Circular Pipe Box Culvert Ditch Improved Culvert Lowered Ditch 111111 Irttti Linear Detention Widened Ditch City of La Porte La Porte Municipal Airport Storm Water Drainage Improvements Exhibit 9 Proposed Drainage Improvements EJ V ALIGN-SWALE-11 W „ N=13815129.48 „ E=3220114.65 "'.. ALIGN-SWALE-07 ALIGN-SWALE-08 ALIGN-SWALE-08 ALIGN-SWALE-11 „ N=13814985.51 N=13815067.05 N=13815103.43 N=13815150.02 E=3218434.51 E=3219391.82 E=3220086.90 E=3220411.24 J EJ_I j�] � —1 Cj =1 ALIGN-SWALE-05 N=13814703.45 E=3217077.20 \76 9 S .\ x 00�' .. 00 „ „ „ x0 o „ /0.. 00 „ „ „ „ I A I ' IR() NS un � I0I R'7'I IV1/I:S1' HANGAR v un � 6 p0 o 32184 ./ < } �.00 ii 00 JO N � I+ 00 �+ �. °0 1� 0 0 r� RI ��� R 1 11.E �N I ALIGN-SWALE-02 „ N=13812665.92 E=3217265.52 f f u / �I JSP 0 2 r 1 X xoo rr � N CO f o0 $k lri 0 � wax JyyII P /,_0 CD 0 00 N 0 0 99 NOTES 1. FOR SURVEY CONTROLS (SEE SHEET G-003) 2. THE CONTRACTOR MUST MAINTAIN POSITIVE DRAINAGE AND AVOID ANY STANDING WATER DURING CONSTRUCTIONS. 3. THE CONTRACTOR MUST MAINTAIN PORTABLE STORMWATER PUMP AVAILABLE ON-SITE ALL TIME TO REMOVE ANY STANDING WATER NOT DRAINED BY GRAVITY. 4. THE CONTRACTOR MUST EXERCISE CAUTION WHILE EXCAVATING AND NOT DAMAGE ANY UNDERGROUND UTILITIES. 5. THE SIDE SLOPES SHOULD NOT BE STEEPER THAN 3:1 SLOPES. PROP DITCH Exist Natural Grade VARIES 3 L� 1 71 VARIES TYPICAL PROPOSED SWALE —ALIGN-SWALE-10 N=13812875.58 E=3220565.32 Existin Ditch Exist Natural Grade PROP DITCHVARIES U) 3L \`> 1 CLEANOUT EXISTING CULVERT TO RE-ESTABLISH POSITIVE DRAINAGE INTO EXISTING DITCH TYPICAL REGRADING DITCH REGRADING SOME DITCHES AND SWALES IS NOT A PART OF THIS CONTACT. IT WILL BE A SEPARATE CONTRACT. FOR BIDDING: 06/03/19 REVISIONS oomov®gn ° v� 0 ...................... o NAWA RAJ PANTHI � ............ o 103690 4 eflufl�ONAL Ela W HT&J ♦ LLC 10351 STELLA LINK RD HOUSTON, TEXAS 77025 (0) (832) 767-0090 TBPE FIRM No. F-14087 Professional n in rs TEXAS FIRM F-18997 LA PORTE MUNICIPAL AIRPORT AIRFIELD PAVEMENT REHABILITATION AND DRAINAGE IMPROVEMENTS 2019 PROJ MGR Panthi DRAWN BY Murphree CHECKED BY Panthi PROJ NO 1912LPRTE CIVIL PEs PROJ NO 1712LPRTE TITLE DRAINAGE IMPROVEMENTS OVERALL EXISTING DRAINAGE DITCHES SHEET C-30 1 ALIGN-SWALE-07 all NOT IN THIS CONTRACT 30 ALIGN-SWALE-08 30 NOT IN THIS CONTRACT 30 0+00y+ 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 12+00 13+00 24 LF L v U U 2 2 2 v U U 2 2 2 2 0 C)00 co - � C) CN O ~ ti co 0 co ~ q) I` ~ CA 00 It LO CO p 0) O It O CO00 O N O D Ln 4 0 co 0000 N Q N T Lq M . N c: 0� N a- O O_Lq C A N O II O C h N - O II N S X+ O ON II J CAN Ni II MN 0CflN m II 0LnN CD II OLnN co II + II O1 11' ­N + II W X+ O LL W J X+ O LL W J+ O LL J+ CD LL IL J 00 LL O J — LL N J = LL ExistGrade-2" Exist Grade ,/—Exist Stm Sw PROP DITCH TO BE Exist Grac e REGRADED Ca 0.22% 20 — -- — — — — —Exist — -- — — -- 20 Grade cDco oO eco cqco cqco — CD — o CD o CD o CD C) CD N Exist Grade N N N N N N N N N PROP DITCH TO B 20 REGRADED NOW RK 20 NO WOR 10 RE RADE @0.01 /o 10 9 c0 O O9 c0 00 cor7 r7 9 c0 PROP IT H NN C3 OO OO 00 Cb O O PROP DITCH O TD B N N N N N N N N N N N N N N TO BE REGRADED REG RADE @ 0.19% NO WORK xisl Pipeline O WORK @ C.04% NO WORK se ExtrBME Caijtioln 10 his Are Lie P pelf es 10 NN c.0 c0 NN I--IZ r__ r__ 0) O0 CO LnL N7 r7 r7 r7 0� c0 c9 cfl O O r7 r7 r7 r7 N N O O O O �� �� �� N N N N N N N N O O N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ALIGN-SWALE-08 30 NOT IN THIS CONTRACT 30 0+00y+ 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 12+00 13+00 xis L L v U U 2 2 2 v U U 2 2 2 2 0 C)00 co - � C) CN O ~ ti co 0 co ~ q) I` ~ CA 00 It LO CO p 0) O It O CO00 O N O D Ln 4 0 co 0000 N Q N T Lq M . N c: 0� N a- O O_Lq C A N O II O C h N - O II N S X+ O ON II J CAN Ni II MN 0CflN m II 0LnN CD II OLnN co II + II O1 11' ­N + II W X+ O LL W J X+ O LL W J+ O LL J+ CD LL IL J 00 LL O J — LL N J = LL ALIGN-SWALE-08 30 NOT IN THIS CONTRACT 30 ALIGN-SWALE-09 30 NOT IN THIS CONTRACT 30 0+00 ; 1+00 ; 2+00 3+00 4+00 5+00 6+00 7+00 Grad xis 25 F v U U 2 2 2 U U U_ 0 C)00 co - � C) r.-- � N O O ~ ti co 0 co ~ q) I` ~ CA 00 It LO CO p C - 15” E tm Swr O O a� 0 C O O T O N .-- O II N - -II T co NO 0 N 0 -'tII C A N O II O C h N - O II N N X+ W .0 J X+ O LL W 1 J X+ O LL W co II J+ O LL J+ — LL d J+ M LL d J X+ Ln LL W � II J O LL 20 Exist Grade PROP DITCH TO BE Exist Grac e REGRADED Ca 0.22% 20 — -- — — -- — — -- — — -- 20 cDco oO eco cqco cqco — CD — o CD o CD o CD C) CD N N N N N N N N N N N N N PROP DITCH TO B REGRADED NOW RK NO WOR 10 10 9 c0 O O9 c0 00 cor7 r7 9 c0 I NN C3 OO OO 00 Cb O O O O N N N N N N N N N N N N N N ALIGN-SWALE-09 30 NOT IN THIS CONTRACT 30 0+00 ; 1+00 ; 2+00 3+00 4+00 5+00 6+00 7+00 Grad v U U 2 2 2 U U U_ 0 C)00 co - � C) r.-- � N O O ~ ti co 0 co ~ q) I` ~ CA 00 It LO CO p C - _ C c N O d O O a� 0 C O O T O N .-- O II N - -II T co NO 0 N 0 -'tII C A N O II O C h N - O II N N X+ W .0 J X+ O LL W 1 J X+ O LL W co II J+ O LL J+ — LL d J+ M LL d J X+ Ln LL W � II J O LL ALIGN-SWALE-09 30 NOT IN THIS CONTRACT 30 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 W J +U- Q p) O O 07 Lr) N C O O d':� 6 X O+ CJ O+ II W O LL d O LL 14+00 15+00 16+00 1 17+00 U �0� '1: -'t O + II X CO J W = LL V�10 1.„1EDdn',3 ItALpNMENT 09 �T / KEYMAP REGRADING DITCHES AND SWALES SHOWN ON THIS SHEET ARE NOT A PART OF THIS CONTACT. IT WILL BE A SEPARATE CONTRACT. FOR BIDDING: 06/03/19 REVISIONS oomov®gn 0 l S1H C x�••• • • i� e v*• ••*o v• 0 ...................... o NAWA RAJ PANTHI ................... v o103690 0 e# • CENS' .•���vo � FS G 4 efluflNAL Ela HT&J ♦ LLC 10351 STELLA LINK RD HOUSTON, TEXAS 77025 (0) (832) 767-0090 TBPE FIRM No. F-14087 Professional n in rs TEXAS FIRM F-18997 LA PORTE MUNICIPAL AIRPORT AIRFIELD PAVEMENT REHABILITATION AND DRAINAGE IMPROVEMENTS 2019 PROJ MGR Panthi DRAWN BY Murphree CHECKED BY Panthi PROJ NO 1912LPRTE CIVIL PEs PROJ NO 1712LPRTE TITLE DRAINAGE IMPROVEMENTS INFIELD DRAINAGE DITCH (SHEET 3) GRAPHIC SCALE SHEET 0 10 20 0 100 200 C-304 Exist Grad 20 — — ---------- — -- -- ---- — -- — -- — — -- -- — -- -- 20 PROP DITCH TO BE REGRADED Ca 0.22% 10 10 cDco oO eco cqco cqco CD CDN o CD o CD o CD C) CD N N N N N N N N N N N N N 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 W J +U- Q p) O O 07 Lr) N C O O d':� 6 X O+ CJ O+ II W O LL d O LL 14+00 15+00 16+00 1 17+00 U �0� '1: -'t O + II X CO J W = LL V�10 1.„1EDdn',3 ItALpNMENT 09 �T / KEYMAP REGRADING DITCHES AND SWALES SHOWN ON THIS SHEET ARE NOT A PART OF THIS CONTACT. IT WILL BE A SEPARATE CONTRACT. FOR BIDDING: 06/03/19 REVISIONS oomov®gn 0 l S1H C x�••• • • i� e v*• ••*o v• 0 ...................... o NAWA RAJ PANTHI ................... v o103690 0 e# • CENS' .•���vo � FS G 4 efluflNAL Ela HT&J ♦ LLC 10351 STELLA LINK RD HOUSTON, TEXAS 77025 (0) (832) 767-0090 TBPE FIRM No. F-14087 Professional n in rs TEXAS FIRM F-18997 LA PORTE MUNICIPAL AIRPORT AIRFIELD PAVEMENT REHABILITATION AND DRAINAGE IMPROVEMENTS 2019 PROJ MGR Panthi DRAWN BY Murphree CHECKED BY Panthi PROJ NO 1912LPRTE CIVIL PEs PROJ NO 1712LPRTE TITLE DRAINAGE IMPROVEMENTS INFIELD DRAINAGE DITCH (SHEET 3) GRAPHIC SCALE SHEET 0 10 20 0 100 200 C-304 0 L0 Q F— cn LLJ z_ U F— Q ALIGN-SWALE-10 all NOT IN THIS CONTRACT 30 0+0 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 L L L L I�I II".11 b.11 4 � t0) CO I Exist 17 L Ch Lf) 0) N E co LO CO N � / Ln r I I 00 — do l l T q 00 r r I I � O C — _ LLC) C II N 00 C — + II _ N pp d O U+ 00 r II W O LL W CO IL W I� W X f— IL L LJ + II Lr) LL X —i ALL W + II Cp LL ALL t CO LL LL xis 20 -F- Exist 25 LF 18" Stri S r xi5t Grade 8" Stm 3wr Exist Grade xis Gr de 24" Stm Sw E ist Grade— 20 20 Exist Grade 20 PROP DITC H T D B\—PROP 20 PROP DITCH TO BE DITCH TO BE RE RADE RO DITCH % TC BE EG A ED @ C.5514. D @ 0. 9°/ REGRADED @ 0.05% 10 10 10 OO c.0 cfl �r7 �� 6)0� NN �� 6)0� OO OO 00 NN c.0 cfl NN Ln SCJ OO O O 0�0� �� �� 6)0� NN N �� 1� Lq r7 r7 cD �� cDcfl OO cDcfl cD 00 O O O O 0) c n O O O O 6) 6) N N O O O O O O O O O O O O O O O O N N O 00 N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N O O 0+0 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 L L L L I�I II".11 b.11 4 � t0) CO I O ti O Cfl r— O a� Ch Lf) 0) N E co LO CO N � / Ln r I I 00 — do l l T q 00 r r I I � O C — _ LLC) C II N 00 C — + II _ N pp d O U+ 00 r II W O LL W CO IL W I� W X f— IL L LJ + II Lr) LL X —i ALL W + II Cp LL ALL t CO LL LL A I 1 r1 L 1 P•\ I T /1 1 1 A A /"�L�171�1-ui i ten- I I NOT IN THIS CONTRACT 30 I�I II".11 b.11 4 � nil[ nY Y � / I� Exist Grade Exist 25 LF xi5t Grade 24" Stm Sw E ist Grade— 20 Exist Grade 20 PROP DITC H T D B\—PROP PROP DITCH TO BE DITCH TO BE RE RADE @ 0.0 % R G AD D @ 0. 9°/ REGRADED @ 0.05% 10 10 cc CE I� r O '(3 Ln SCJ O O N N 77 OO N OO r-- O6 O�cq O O cD 00 cD O 00 O O N N O O HCLn HC0) 0) 0) 0) Q0 cc O O rl� O 6) O 6) O 6) O 00 00 N N N r7 r7 r7 r7 0 0 0 0 O O 66 66 66 66 66 66 66 66 66 O O O O 66 66 66 66 66 N N O O O O N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 11+00 L 12+00 13+00 14+00 15+00 16+00 L 17+00 18+00 19+00 ; ; Z3 Z3 2 = U U U U 0Lo Ln Np) 00 N a0 �0O Ln O 0) c7 N 0)cl l' -:0)O Cfl CO 00 C r 00 "'' LJ) O N N N �o� w� w� ILL LL ALIGN -DITCH -11 NOT IN THIS CONTRACT 1 30 G 20+00 21+00 22+00 23+00 24+00 25+00 26+00 27+00 0 T U 0�0 N oma- cr- � J d N LL L 28+00 29+00 30+00 31+00 32+00 33+00 34+00 35+00; 36+00 U N M (D 0) O 00 EZco T r X L711 J W M LL 0 L0 Q Cn LLJ z_ J 2 U F— SQ G ULA u p I�I II".11 b.11 4 � nil[ nY Y � / I� Exist Grade xi5t Grade 20 PROP DITC H T D B\—PROP DITCH TO BE RE RADE @ 0.0 % REGRADED @ 0.05% 10 cc CE I� r O '(3 Ln SCJ O O N N OO OO 0�0� O�cq OO Ll� LqLl� O O O O O O O O O O 6 O O O O O O O O O 6) O 6) O 6) O O O 6) O 00 00 N N N N N N N N N N N N N N N N N N G 20+00 21+00 22+00 23+00 24+00 25+00 26+00 27+00 0 T U 0�0 N oma- cr- � J d N LL L 28+00 29+00 30+00 31+00 32+00 33+00 34+00 35+00; 36+00 U N M (D 0) O 00 EZco T r X L711 J W M LL 0 L0 Q Cn LLJ z_ J 2 U F— SQ G ULA u p I�I II".11 b.11 4 � nil[ nY Y � / I� KEYMAP I ALIONMENT O\ k REGRADING DITCHES AND SWALES SHOWN ON THIS SHEET ARE NOT A PART OF THIS CONTACT. IT WILL BE A SEPARATE CONTRACT. FOR BIDDING: 06/03/19 REVISIONS oOmpp®gn OF ° �r�:•'• 'sir°o o ....................... o NAWA RAJ P..... °o ®. ......... o o 103690 ° FS G 4 eflufl�ONAL Ela HT&J ♦ LLC 10351 STELLA LINK RD HOUSTON, TEXAS 77025 (0) (832) 767-0090 TBPE FIRM No. F-14087 scion I * nineers TEXAS FIRM F-18997 LA PORTE MUNICIPAL AIRPORT AIRFIELD PAVEMENT REHABILITATION AND DRAINAGE IMPROVEMENTS 2019 PROJ MGR Panthi DRAWN BY Murphree CHECKED BY Panthi PROJ NO 1912LPRTE CIVIL PEs PROJ NO 1712LPRTE TITLE DRAINAGE IMPROVEMENTS INFIELD DRAINAGE DITCH (SHEET 4) GRAPHIC SCALE SHEET 0 10 20 0 100 200 C-305 REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Agenda Date Requested: March 9, 2020 Requested By: Lorenzo Wingate, P.E., C.F.M. Department: Public Works Report i ' Resolution i ' Ordinance Exhibits: Bay Harbor Drainage Improvements Appropriation Source of Funds: Account Number: Amount Budgeted: Amount Requested: Budgeted Item: ir Yes ir' No SUMMARY Opportunity to discuss any drainage concerns not covered by previous items. Bay Harbor Drive to Oakhurst Follow-up At the February 10th Drainage Committee meeting, we discussed the in-house drainage maintenance project being performed on Bay Harbor Dr. Construction efforts are complete. See attached photos of completed improvements. Staff initiated coordination efforts withTxDOT on February 11th, for maintenance of the roadside ditches along Broadway. At the time of the agenda request, TxDOT was still attempting to coordinate the requested work. Staff will provide an update to the Drainage Committee at the time of the meeting. RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. Alexander, City Manager Date