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HomeMy WebLinkAbout02-10-20 Drainage and Flooding Committee Meeting JAY MARTIN CHUCK ENGELKEN Chairman Member STEVE GILLETT DANNY EARP Alternate Member Vice-Chairman MINUTES OF THE DRAINAGE AND FLOODING COMMITTEE MEETING JANUARY 13, 2020 The Drainage and Flooding Committee of the City of La Porte met on Monday, January 13, 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 1. CALL TO ORDER - Chairman Martin called the meeting to order at 5:00 p.m. 2. PUBLIC COMMENTS (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. 3. STATUTORY AGENDA (a) Presentation, discussion, and possible action to approve the minutes of the December 9, 2019 meeting. \[Chairman Martin\] Committee member Engelken moved to approve the minutes; the motion was adopted, 3-0. (b) Presentation, discussion, and possible action regarding the status of current drainage projects. \[Lorenzo Wingate, Assistant Director of Public Works\] Mr. Wingate said he had reached out to Harris County Precinct 2 concerning the use of additional funding they had as a match for Bayside Terrace, and that he is also working with Halff Associates as consultants. Chair Martin ascertained there should be a proposal by the February Committee meeting. Wingate shared that F-216, Phase III was in the same situation. Wingate noted that the executed contract between the City and Harris County, for a grant allocation of approximately $3.4 million (with no match required) in Harvey money, was received today for the Northside Drainage Improvement Project, adding that the City intends to pay for engineering services and the grant will be used for construction. He said that the County has selected a consultant for the F-101 project and plans to get approval to execute the at the next Harris County Commissioners Court meeting. Wingate noted the desilting of F-101 is complete. (c) Presentation, discussion, and possible action regarding the Texas Division of Emergency Management (TDEM) Hazard Mitigation Grant Program (HMGP) related to FEMA-DR-4466 (Tropical Storm Imelda). \[Lorenzo Wingate, Assistant Director of Public Works\] Mr. Wingate let the Committee know TDEM has opened applications for Tropical Storm Imelda grants and that he expected the same process of having to wait on any expenditures until the submissions had been awarded, unless the project was divided into phases. Wingate said there were no updates for Brookglen, and that Harris County Flood Control was waiting on timing for the release of grant funds and consideration by the Commissioners Court. January 13, 2020 - Drainage and Flooding Committee Minutes Wingate said the repetitive loss maps (properties with two or more claims in five years) were reviewed against the damage from Hurricane Harvey and that he believed the City was moving forward in addressing drainage issues. Ray Mayo, Director of Public Works, said in-house work was being concentrated on the east side of the airport and that he believed that about 50% of the work had been completed. 4.Set date for next Drainage and Flooding Committee Meeting - The next meeting date was set for February 10, 2020. 5.Committee Member Comments There were no comments. ADJOURN The meeting was adjourned without objection at 5:17 p.m. ____________________________________ Lee Woodward, City Secretary January 13, 2020 - Drainage and Flooding Committee Minutes REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Appropriation Agenda Date Requested: February 10, 2020 Requested By: Lorenzo Wingate, P.E., C.F.M. Source of Funds: Department: Public Works Account Number: Amount Budgeted: Report Resolution Ordinance Amount Requested: Exhibits: HCFCD Drainage Network Map Budgeted Item: Yes No SUMMARY Receive report regarding Harris County Flood Control District (HCFCD) and Harris County 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 REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Appropriation Agenda Date Requested: February 10, 2020 Requested By: Source of Funds: Lorenzo Wingate, P.E., C.F.M. Department: Public Works Account Number: Amount Budgeted: Report Resolution Ordinance Amount Requested: Exhibits: Consultant Proposal Budgeted Item: Yes No SUMMARY During the December 9, 2019 City Council Meeting, Council voted to follow the recommendation of the Drainage Committee of proceeding with the Bayside Terrace Drainage Improvements Project. Staff is has negotiated the attached scope of work for engineering service with Halff Associates, Inc. The proposal includes tasks for preliminary engineering, final design, bidding, and construction phase services. The proposal will be presented to Council for approval at the February 24, 2020 Council meeting. RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. Alexander, City Manager Date January 29, 2020 Mr. Lorenzo Wingate City Engineer rd 2963 N. 23Street La Porte, TX 77571 RE: Engineering Services Fee Proposal Bayside Terrace Subdivision Drainage Improvements Revision 3 Dear Mr. Wingate: Halff AssociatesInc. (Halff)is pleased to submit our proposal to provide engineering servicesfor the Bayside Terrace Subdivision Drainage Improvements projectfor 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 ofa 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 finaldesign phase is to develop signed and sealed construction plansbased 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 southeasternboundary 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. Mr. Lorenzo Wingate City of La Porte January 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 inAttachment “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)Reviewingall available record drawings and drainage reports to determine potential utility conflicts and constraints. b)Performingexisting 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)Evaluatingthree 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)Providingestimated construction costs for each alternative developed. e)Providingprovide a final recommendation to the City of La Porte for their approvalin 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 Mr. Lorenzo Wingate City of La Porte January 29, 2020 Revision 3 Page 4 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 communicationwith private utility owners to resolve conflicts Task 4: Civil Design Services 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%, andfinal. Thedrainage 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 utilitydrawings:utility plan and profiles and paving/drainage plan and profiles.Paving and drainageplan 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 lineand 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 Portewater line details, SWPPP details, and storm sewer detailsas 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 Portepay itemsand specifications. e)Assist with preparation ofproject 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:BidPhase 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 PhaseServices Task 6: Construction Phase Services a)Respondingto submittalsas requested by the City of La Porte b)RespondingtoRFI as requested by the City of La Porte c)Design changes/plan revisionsas requested by the City of La Porte d)Preparation of record drawings, maintenance of RFI and submittallog Mr. Lorenzo Wingate City of La Porte January 29, 2020 Revision 3 Page 5 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: 1.All consultant fees shown on are considered to be lump sum unless otherwise noted. 2.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. 3.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. 4.The scope of services does not include any preparation or attendance at any public meetings pertaining to the project design or construction. REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Appropriation Agenda Date Requested: February 10, 2020 Requested By: Lorenzo Wingate, P.E., C.F.M. Source of Funds: Department: Public Works Account Number: Amount Budgeted: Report Resolution Ordinance Amount Requested: Exhibits: Project map Budgeted Item: Yes No Project update chart Harris County Drainage Network Map 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 REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Appropriation Agenda Date Requested: February 10, 2020 Requested By: Lorenzo Wingate, P.E., C.F.M. Source of Funds: Department: Public Works Account Number: Amount Budgeted: Report Resolution Ordinance Amount Requested: Exhibits: None Budgeted Item: Yes No SUMMARY Opportunity to discuss any drainage concerns not covered by previous items. RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. Alexander, City Manager Date