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Home My WebLink About07-13-20 Drainage and Flooding Committee Meeting REQUEST FOR DRAINAGE & FLOODING COMMITEEAGENDA ITEM Appropriation Agenda Date Requested:July13, 2020 Requested By:Lorenzo Wingate, P.E., C.F.M.Source of Funds: Department:Public Works Account Number: Amount Budgeted: ReportResolutionOrdinance Amount Requested: Exhibits:TDEM HMGP Letter; CDBG-MIT Letter Budgeted Item:YesNo SUMMARY The City applied for a $4,000,000.00 grant through the Texas Division of Emergency Management (TDEM) for the Brookglen Subdivision Drainage Improvement Project. TDEM provided a notification letter dated April 13, 2020 indicating that the Brookglen Subdivision Drainage Improvement Project application was not selected for funding. In a letter dated June 22, 2020, the Texas General Land Office (TXGLO) invited the City of La Porte to apply for supplemental CDBG Mitigation (CDBG-MIT) funding for the Brookglen Subdivision Drainage Improvement Project (DR-4332-271) that was not selected for TDEM funding. The TXGLO supplemental funding program has specific requirements to benefit low to moderate income areas. This program does not require a non-federal cost share. -MIT funding for the Brookglen Subdivision Drainage Improvement Project. CDBG-MIT funding is expected to be submitted to the TXGLO by September 30, 2020. Staff is has also prepared a solicitation to procure grant administration services to assist with this application process. RECOMMENDED MOTION Approved for Drainage CommitteeAgenda Corby D. Alexander, City ManagerDate \[Date\] Mr. Corby Alexander City Manager City of La Porte 604 W Fairmont Pkwy La Porte, Texas 77571-6215 alexanderc@laportetx.gov Re: DR-4332-271 City of La Porte – Hazard Mitigation Grant Program (HMGP) Project City of La Porte - Brookglen Subdivision Drainage Improvements Dear Mr. Alexander: Your HMGP project application has been designated as an alternate project under DR-4332 HMGP for Hurricane Harvey. This designation means that your project was not selected for funding. However, the project remains active with TDEM and will remain in consideration if additional funds become available through DR-4332. Approximately $1 billion ($820.5 million federal share) in HMGP funds were made available for the state of Texas through Hurricane Harvey. TDEM received 565 applications valued at approximately $4.5 billion for these funds. While there were many strong applications, the demand was far greater than available funds. I encourage you to seek funding for this project from other sources or future HMGP solicitations. As you may know, the Texas General Land Office (GLO) received funding from the U.S. Department of Housing and Urban Development (HUD) for Community Development Block Grant Mitigation funds (CDBG-MIT). Additional information regarding this program is available on the GLO website: https://recovery.texas.gov/action-plans/mitigation-funding/index.html. If you have any questions, please contact our staff at TDEM-Mitigation@tdem.texas.gov. Respectfully, ® Suzannah Jones, CEM Deputy Chief, Recovery and Mitigation Texas Division of Emergency Management cc: Mr. Lorenzo Wingate, City Engineer wingatel@laportetx.gov June 22, 2020 The Honorable Mayor Louis R. Rigby City of La Porte City Hall 604 W. Fairmont Parkway La Porte, Texas 77590 RE: Invitation to Apply for State of Texas CDBG Mitigation (CDBG-MIT) HMGP Supplemental Funding Dear Mayor Rigby: The Texas General Land Office is pleased to announce the City of La Porte has been invited to apply for CDBG Mitigation (CDBG-MIT) funding as part of the Hazard Mitigation Grant Program (HMGP): Supplemental program for Drainage (DR-4332-271). The project was submitted to the Texas Division of Emergency Management (TDEM) for HMGP funding as a result of Hurricane Harvey (DR-4332-TX). The project was not able to be funded through TDEM’s HMGP due to an oversubscription of the program. TDEM has since worked with the GLO to provide a list of unfunded projects that potentially meet selection criteria for the HMGP: Supplemental program outlined in the State of Texas CDBG-MIT Action Plan (Action Plan) that may specifically meet the low- and moderate-income national objective. Through the application process the project will be reviewed to ensure compliance with CDBG- MIT eligibility requirements. The project must meet the low-and moderate- income national objective. The GLO will not require a non-federal cost share, also known as match. For additional details on this program, please review the Action Plan’s section 4.4.5 found here: https://recovery.texas.gov/mitigation. The GLO will need official documentation that City of La Porte has either accepted or declined the invitation to apply for funding for the project. Please send notification of acceptance or declinationof the invitation to apply within two weeks of the date of this letter to Cynthia Hudson at the email listed below. The application will be due 90-days from the date of your acceptance letter. Once the GLO receives acceptance of the invitation to apply, a grant manager will contact you or your authorized representative to begin the application process. Of course, you may use materials prepared for your original HMGP application to begin the process. 1700 North Congress Avenue, Austin, Texas 78701-1495 P.O. Box 12873, Austin, Texas 78711-2873 512-463-5001 glo.texas.gov 2 If you have questions or need any additional information, contact Cynthia Hudson, Director of Grant Management at Cynthia.Hudson.glo@recovery.texas.govor 512-917-4073. Sincerely, Heather Lagrone Sr. Deputy Director Community Development & Revitalization REQUEST FOR DRAINAGE & FLOODING COMMITEEAGENDA ITEM Appropriation Agenda Date Requested:July13, 2020 Requested By:Lorenzo Wingate, P.E., C.F.M.Source of Funds: Department:Public Works Account Number: Amount Budgeted: ReportResolutionOrdinance Amount Requested: Exhibits:Harris CountyLetter; COLP Storm Sewer Design Budgeted Item:YesNo Criteria;La Porte FIRMs SUMMARY In a letter dated May12, 2020, the County Engineer for Harris County and the Executive Director of Harris County Flood Control District(HCFCD)recommended minimum drainage standards to the County Judge and Commissioners.The recommendation(s)presented by county staffencouraged that all cities within Harris County adopt minimum drainage standards The County Engineer recommended drainage criteria are adopted by the community. The potential changes are listed in the following table: IğƩƩźƭ /ƚǒƓƷǤ wĻƨǒźƩĻƒĻƓƷ/ǒƩƩĻƓƷ /h\[t wĻƨǒźƩĻƒĻƓƷ Atlas 14 rainfall rates to size storm water 5-year (ditches/culverts/stm swr); 25-year (100+ conveyance and detension systemsacres); 100-year (bridges; creeks; detention) 0.55 ac-ft/ac detention rate0.45 ac-ft/ac detention rate Prohibit detention design using hydrograph Detention design based on detention rate; timing(consistinet with HC recommendation) Fill allowed within 500-yr floodplain; no net fill No net fill in the current 500-yr floodplain within 100-year floodplain Finished floor elevation established one foot Finished floor elevation established at or above and/or waterproofed to the 100-yr flood waterproofed to the 500-yr flood elevation elevation Currently, for all projects within the City of La Porte that discharge into Harris County and/or HCFCD infrastructure, approval from the jurisdiction having entity is required.The requirements suggested by Harris County would impact projects that do not discharge into Harris County and/or HCFCD infrastructure. City staff anticipates that proposed no net fill within the 500-yr floodplain requirement and the proposed minimum finished floor elevation requirement have the potential to impact a significant amount of development within the City of La Porte. never been updated. years to remain incompliance with requirements of the National Flood Insurance Program (NFIP). To assist with the transition from current standards to the recommended Harris County standards, Harris County staff with evaluating and updating policies. Staff is seeking direction from the drainage committee on the recommended course of action in response to the letter dated May 12, 2020, submitted to the Harris County Judge and Commissioners, by the County Engineer for Harris County and the Executive Director of Harris County Flood Control District. RECOMMENDED MOTION Approved for Drainage CommitteeAgenda Corby D. Alexander, City ManagerDate REQUEST FOR DRAINAGE & FLOODING COMMITEEAGENDA ITEM Appropriation Agenda Date Requested:July 13, 2020 Requested By:Lorenzo Wingate, P.E., C.F.M.Source of Funds: Department:Public Works Account Number: Amount Budgeted: ReportResolutionOrdinance Amount Requested: Exhibits:Ordinance No. 2012-3421; Interlocal Agreement. Budgeted Item:YesNo SUMMARY At the June 8, 2020 Drainage Committee Meeting, the Committee requested potential actions that could be taken against the City of Pasadena for failure to provide detention as outlinedwithin the Interlocal Agreement established by Ordinance No. 2012-3421, providing for the of Pasadena. The City Attorney is expected to attend this meeting to provide an update to the Committee. RECOMMENDEDMOTION Approved for Drainage CommitteeAgenda Corby D. Alexander, City ManagerDate REQUEST FOR DRAINAGE & FLOODING COMMITEEAGENDA ITEM Appropriation Agenda Date Requested:July 13, 2020 Requested By:Lorenzo Wingate, P.E., C.F.M.Source of Funds: Department:Public Works Account Number: Amount Budgeted: ReportResolutionOrdinance Amount Requested: Exhibits:Project map Budgeted Item:YesNo Project update chart Harris County Drainage Network Map Bayside Terrace Update SUMMARY Refer to attached exhibit(s) for updates on various drainage projects throughout the City. RECOMMENDED MOTION Approved for Drainage CommitteeAgenda Corby D. Alexander, City ManagerDate The City of La Porte Drainage Projects 2019 ´ 3 ! ( 9 ! ( 4 ! ( 8 ! ( 5 ! ( 10 ! ( 7 ! ( 6 ! ( 1 ! ( 2 ! ( NUMBERPROJECT 1Brookglen Flooding Mitigation Analysis 2Bayside Terrace Drainage Improvements 3Lomax/F101-03-00 Drainage Channel Feasibility Study 4Little Cedar Bayou F216 Phase III Improvement 56th Street Madison to Main Paving and Drainage 68th & D Storm Water Conveyance Improvements 7Bob's Gully 8Little Cedar Bayou F216 Phase II Improvements 00.512Miles 9Coupland Drive 10Airport On-site Drainage Improvements BAYSIDE TERRACE PRELIMINARY ENGINEERING REPORT PROGRESS MEETING JUNE 18, 2020 PROGRESS UPDATE AGENDA Background Existing Topography Existing Utilities Survey Preliminary Drainage Layouts Next Steps PROGRESS UPDATE BACKGROUND 206 residential structures 21 commercial structures $1.1 Million in damages during Harvey PROGRESS UPDATE TOPOGRAPHY Generally slopes from east to west Bay to the east TxDOT Road to the west PROGRESS UPDATE UTILITIES Storm Sewer (Green) 12” RCP to 42” RCP 30” RCP Outfall Sanitary Sewer (Orange) 4” to 8” RCP, PVC Outfalls west to TxDOT roadway Water (Blue) 2” to 8” AC PROGRESS UPDATE SURVEY Survey status Preliminary survey with sanitary flowlines, storm flowlines, paving, and topo shots has been completed Water line included per La Porte GIS Private utility map requests complete for Centerpoint gas/electric ROW and lot lines delineated based on available information PROGRESS UPDATE PRELIMINARY DRAINAGE Alternative 1 –Storm Sewer 24” RCP to 60” RCP Storm sewer flows east to upsized outfall into the bay Conversion of streets from asphalt to roadside ditch to full curb and gutter street sections Provides 100-year LOS PROGRESS UPDATE PRELIMINARY DRAINAGE Alternative 1 –Storm Sewer 24” RCP to 60” RCP Storm sewer flows east to upsized outfall into the bay Conversion of streets from asphalt to roadside ditch to full curb and gutter street sections Provides 100-year LOS PROGRESS UPDATE PRELIMINARY DRAINAGE Alternative 2 –Roadside Ditches 2’ to 4’ Deep ditches East portion flows east to Bay Includes upsizing outfall to 48” through park West portion flows west to TxDOT Provides 5-year LOS PROGRESS UPDATE PRELIMINARY DRAINAGE Alternative 2 –Roadside Ditches 2’ to 4’ Deep East portion flows east to Bay Includes upsizing outfall to 48” through park West portion flows west to TxDOT Provides 5-year LOS PROGRESS UPDATE NEXT STEPS Analyze combined roadside ditch/storm sewer option Finalize drainage alternatives Identify utility conflicts/relocations Finalize cost estimates for three alternatives Conference call to discuss cost estimates for each alternative prior to PER submittal Draft PER submittal to COLP Goal is to submit week of July th 6 QUESTIONS? REQUEST FOR DRAINAGE& FLOODINGCOMMITEEAGENDA ITEM Appropriation Agenda Date Requested:July 13, 2020 Requested By:Lorenzo Wingate, P.E., C.F.M.Source of Funds: Department:Public Works Account Number: Amount Budgeted: ReportResolutionOrdinance Amount Requested: Budgeted Item:YesNo Exhibits: SUMMARY Opportunity to discuss any drainage concerns not covered by previous items. RECOMMENDED MOTION Approved for Drainage CommitteeAgenda Corby D. Alexander, City ManagerDate