Loading...
HomeMy WebLinkAboutcocc_council_mtg_minutes_20240422_specialCAPE CANAVERAL CITY COUNCIL SPECIAL MEETING City Hall Council Chambers 100 Polk Avenue, Cape Canaveral, Florida 32920 Monday April 22, 2024 1:00 p.m. MINUTES CALL TO ORDER: The Chair called the Meeting to Order at 1:00 p.m. Council Member Willis led the Pledge of Allegiance. ROLL CALL: Council Members Present: Council Member Council Member Mayor Pro Tem Mayor Council Member Kim Davis Kay Jackson Mickie Kellum Wes Morrison Don Willis Others Present: City Manager City Attorney Administrative/Financial Services Director Community + Economic Development (C+ED) Dir. C+ED Deputy Director/Code Enforcement Manager C+ED Code Enforcement Officer C+ED Code Enforcement Officer C+ED Chief Resilience Manager C+ED Resilience Engineering Services (RES) Mgr. C+ED Executive Assistant/Department Admin. Code Enforcement Admin Assistant Admin Assistant/Permit Technician Community Engagement Manager/PIO HR/Risk Management Director IT Manager Parks, Recreation + Community Affairs (PRCA) Dir., (Recording Secretary) PRCA Deputy Director/ Parks & Projects Public Works Services Director Public Works Services Deputy Director Executive Assistant to City Manager/Office Manager Brevard County Sheriff's Office Commander Todd Morley Anthony Garganese John DeLeo Dave Dickey Brian Palmer Chris Robinson Jerrol Coats Zachary Eichholz Lexi Miller Renee Yother Patti Roth Anna Young Amy Moody Natalie Harmon Mike Schaffer Molly Thomas John Mayberry June Clark Jessica Erdman Lisa Day Byron Keck APPROVAL OF AGENDA AS WRITTEN OR WITH AMENDMENTS: A motion was made by Mayor Pro Tem Kellum, seconded by Council Member Jackson to approve the Agenda as written. Motion carried 5-0. PUBLIC PARTICIPATION: Peg Schaller, business owner of Ellie Mae's Tiki Bar, discussed appreciation for City Manager Morley's working to resolve issues previously brought to the City's attention. City of Cape Canaveral, Florida City Council Special Meeting • April 22, 2024 Minutes • Page 2 of 3 ITEM FOR DISCUSSION: Review of Community and Economic Development Department roles, responsibilities and discuss actions proposed to resolve current issues for properties located on Fillmore Avenue and Jackson Avenue. UPDATE: Mayor Morrison distributed copies of the original January 24, 2024 Special Meeting update* from the City Council Regular Meeting of March 19, 2024. City Manager Morley thanked Ms. Schaller, and informed Council that Ms. Schaller provided additional information to him, which will be researched and reviewed with Staff. City Manager Morley requested to meet with City Council on May 7, 2024 to present a detailed report of findings on the issues at Fillmore Avenue and Jackson Avenue. A motion made by Council Member Willis, seconded by Council Member Davis, to schedule a meeting for May 7, 2024, starting at 4:30 p.m. The motion carried 5-0. Staff presented the Building Inspection Report listing the individual Fillmore properties referenced in Attachment 2 generated from BS&A. Discussion ensued and included the following items: 1: A written statement from the Building Official with updates will not be available until the project is complete, and if any additional clarification is needed it will be provided in the forthcoming Findings Report. 2: A tracking spreadsheet of all tasks related to Fillmore Avenue has been created and is public record, and an executive summary will be distributed to Council when finalized. RES Manager Miller introduced Kiel Causby, P.E. and Tucker Hunter both with Kimley-Horn and Associates, and distributed a memo* of the engineering report created by Kimley-Horn to Council. Mr. Causby shared a brief project overview presentation of The Villas at Fillmore Avenue. 3: Florida Power & Light (FPL) has complied with removal of all overhead lines and installation of underground lines consistent with the current City Code. City Manager Morley directed Staff to place caution tape and cones around the debris. City Attorney Garganese suggested that if the property owner disapproves, they can have it removed. City Manager Morley instructed Staff to have FPL confirm line locations and burial depth, and assured Council that follow-up will be added to the task list. 4: City Manager Morley confirmed for Council that these items will be in the Findings Report which will be discussed at the May 7, 2024 meeting. 5: City Manager Morley informed Council that these Code revisions and department updates will be presented at a later date as more work needs to be done. Mayor Morrison recessed the meeting at 2:15 p.m. The meeting reconvened at 2:33 p.m. Discussion ensued regarding Code Enforcement issues involving 114, 116,118, and 120 Jackson Avenue: 1: A report showing all actions and correspondence related to Code Enforcement at 114, 116, 118, and 120 Jackson Avenue for the period of January 1, 2016 to January 24, 2024, which shall include all records available, public records requests, watermarks on all record drafts, functionality and reports of BS&A Software (BS&A) . City Manager Morley assured Council a more acceptable report will be provided. Molly Thomas, City of Cape Canaveral, Florida City Council Special Meeting • April 22, 2024 Minutes Page 3 of 3 2: Procedural and administrative review of Code Enforcement processes, a third party to provide objective recommendations for improvements, a flow chart utilized by Code Enforcement that shows how to start and complete a case, adding FL Statute 162 and City Code are referenced. City Manager requested a copy of the flowchart be emailed to him and the Council. City Attorney Garganese discussed the revision of the City Code in 2019 to remove inconsistencies with State law, and due to these revisions already implemented in the Code for administrative procedures, indicated no reason for further revisions be made at this time. 3: Code Enforcement requirements to maintain Code Enforcement Officer credentials, contracting third -party help to provide objective recommendations for improvements, and recommendation to display Code Enforcement credentials on the City website. 4: A BS&A report of the City's current open cases for distribution to Council, Staff's request for adequate time to generate the report and review by City Manager prior to distribution, the City's previous financial software and data from Springbrook uploaded into BS&A, efforts to remedy the data transition gap, and confirmation from City Manager Morley for the electronic distribution to Council. 5: City Manager Morley will produce a conclusions and recommendations report subsequent to the Findings Report, projecting a June time -frame of availability, and how the improvements will allow more acceptable response times to provide information and services to citizens. City Manager Morley, thanked the Council, Peg Schaller, the Fillmore townhome owners, and Staff. Administrative/Financial Services Director, John DeLeo, thanked Executive Assistant to the City Manager/Office Manager Day for working overtime in preparation for the meeting. ADJOURNMENT: The Meeting was adjourned at 3:42 p.m. Molly Thomas, PRCA Director (Recording Secretary) Wes Morrison, Mayor *Copies of the documents distributed and presented during this meeting will be attached electronically to the Minutes, after adoption, in Laserfiche online. SEAL OF CAPE CANAVEAL, FLORIDA Attachment to the April 22, 2024 City Council Special Meeting Minutes ORANGE AVENUE 000 i — "I 61.0' FRO. 5/6. I.FC. L.B, 6464 15A_ _ _ W.O.PA 61.00' (P) 80.96' (N) 4' CONC. WALK —s°-- 6F''1653 O6 LOT 2 BLOCK 53 2 STORY F.F.E. 10.10 E5157.,42 W.M621 ER, 2 'WWI CO/Re' ASPHALT LINE RISE INLET TOP TO BE RUSH NTHPAVER XEII CRATE NM 501D CNERE_ 2 STORY F.F.E. 10.10 114 00'•(P:) LOT 3 q5 BLOCK 53 8T3339" E 0 11' NYLON/Dr ORAN &SN. 1.25 0. 220 9 SN FOR Cf. .. 2 STORY MINNOW F.F.E 10.10 Y10RIE TONPAS IXI£T DPE C cc. NM r NOE MD 5 RIB• HIDE I1r Du C.IXC MOM 11 TOP 5.55 © 48 R\W CAL-IR°3M) ISO FILLMORE AVENUE ASPHALT L NE 6¢• o: 1..x 66ti` BOT 4 LOCK 53 113.97' (M) 114.00' (P) 2 STORY TOIANCNE F.F.E 10.10 CONC. PAO 240' REMAINS. OF LOT 12 BLOCK 53 aR- °-_-au J.UO. GRAPHIC SOILS r=1D• - 25.013 (P) --- 224.95 (M) , a 2/15/20 RD.RPBBD R B wows cumDA1E0 9/ID,20 OP 5/3/20 IRV. PEA CRY M CAPE C.IANR/L C01111 DAZED 8/26/20 PR ON ENO. DATE REVISIONS BY CHIN, NOTES: FOR Bum. m.r6s sx BEET C-001. 2 FOR .END MO MBRWAODXS SFE SM. C-001. 3 .BL 9DEWBK5 NMI) R91C R/II 5NN1 BE B' NICK TO WATCH EBSRN SOEWR RENNE 440 REPDE INST. B. PPE AS NEEMO FOR ffro umsr OF NEW N. MM. 6 1M STORY ORAX PPE 8WL BE MS N-12 OR APPRO.) EWPL 0 6. PROSE QITIEAS MO DONIPWIS ARNIM NE STRIMNILS TO ORECT STORNATER RNDRF iO ME RTE2IOON SYSIEN. CUT NIA sME " rya awry ON ryo SECTION NARK lt1IT 4IIU0i O I12990re vow ti I,...0 _I1-U 1 B/24/20 11,5'1'692=11115.a FOR: RONALD A. ABELES DATE 06/11/20 FILLMORE TOWNHOMES GAPE CANAVERAL FLORIDA PAVING AND DRAINAGE PLAN EA,EN (:.INEERING, INC. NBre.u2» ruE` 0:1gtvg SCALE JOB NO. 200024 DRAMA DPA .3 NO. C-102 i Attachment to the April 22, 2024 City Council Special Meeting Minutes NOTES FOR SILT FENCE: %SLAF,GE In 1 n ®NG s.wo GEOTEXTIS ¢ OWN UP rcaxsr OURS) if n OF EAT STONE. ¢ortAGGREGATE (nwn SOO x Oft APPROVED EQUAL) BCW➢E ST/BulFD mM EARL MEETING NOr NOTES: 0 UM COMPACTS] TO 98S MAIONUN OMEN yxEDm, A xnx MINIM rduuxtc o r ISO 1. Eze k'Faie n TEE NT000ET 00 Ss MALL BE TYPE III SILT FENCE PROTECTION AROUND DITCH BOTTOM INLETS. SEEDING U... .. USE Mxr swD coxEwasCONCRETE PAVER DETAIL CRnaxk POST Posnaras � (7a: NT perm E / SECTION ' ALTER FABRIC ELEVATION TYPE III SII T FFNCF SILT FENCE DETAIL NON TRAFFIC INSTALLATION DRAIN BASIN INLINE DRAIN NI 7 A CROSS SECTION // A STMIDND 88170 EMD N AUNT. 5/ MBENJESI SILP PxINC i.n EDGE WEN GRADES PIE ME OWL I. CONTROL JORIS BE SAN CUT 101.• TIE FPS! S If IDLK SWAGE T MOS L e W SSOR AM ATEaISLIS 7wrmrt TO i O MALL RECITE su ul SIR A SIRS A HAREMS rc Ss a CREAM A 4E414 MAU. ROT BE 'ACNE AWE, SCALE: T"=5' iS q .0011 EASING ERE MAX IS EXPANSION J00.00 WIZ an 6 mND AS MAl xG o9crtruml MES¢Yxn xn lrmi ¢vrw FMI6IIE 5¢rwn MN rv. CROSS SECTION 4,C SCALE: I' S A CROSS SECTION c-15o1 SCALE: T'=5' 15 10 SIDEWALK DETAIL CROSS SECTION �% a SCA.: I•-5' SCALE: I'-5 29 il�r ED0R8 O FIrk. PLAN f aaR4� Gullet PROFILE PROFILE FLARED END STRAIGHT END CURB AND GUTTER ENDINGS DETAIL 8 (NOT I USING CROSS SECTION AiO, C-1RE2120, 501 15 10 OCT.PLAN a a Gullet V A MIAMI CURB DETAIL I ;,II I UI 0/D/10 ROL PER CITY OF CAPE CMA0FR/L COMM DATED 8/28/10 DATE REVISIONS BY CHE'o FOR: RONALD A. ABELES DATE 06/11/20 FILLMORE TOWNHOMES CAPE CANAVERAL FLORIDA PAVING AND DRAINGE DETAILS OINEPRiING, INC. Mmre:. ma)'LT.Lr" - EOOON: W/NR -NEAT EA,EN SCALE JOB NO. 200024 DRAWN DPA SHT. NO. C-501 J Attachment to the April 22, 2024 City Council Special Meeting Minutes The Villas at Fillmore Stormwater Review 1 By: Kiel Causby, P.E. Kimley-Horn and Associates Project Overview 2 1 Attachment to the April 22, 2024 City Council Special Meeing Minutes Scope of Task Order Perform a site visit to review the existing site conditions Review project documents uploaded to BS&A Compare the as-builts to the approved plans and identify any deviations Prepare a stormwater memo summarizing findings and recommendations based on the approved plans and City Code 4 2 Attachment to the April 22, 2024 City Council Special Meeting Minutes Findings * The designed retention area does not meet the City's water quantity requirements of Section 90-148. O The plans were approved therefore allowing the increased discharges rates and runoff volume. * The constructed retention area does not match the approved plans. O Bottom of the retention area is at elevation 9 instead of 8 per the approved plans. O The retetion area width varies and does not appear to match the approved plans. * A 12-inch outfall structure was installed instead of the 24-inch outfall structure. * The rim of the outfall structure was installed at elevation 9.12 instead of 9.25 per the approved plans. * The as-built does not provide the size of the pipe installed, but a field measurement verified a 12-inch pipe was installed, which is consistent with the approved plans. * The proposed Type C structure was not installed. Instead, the 12-inch pipe ties into the existing drainage inlet located at the edge of the driveway. 6 3 Attachment to the April 22, 2024 City Council Special Meeting Minutes Recommendations The stormwater management system should be reconstructed to be consistent with the approved plans. A new as -built is recommended once the stormwater management system has been reconstructed. Adequate detail should be provided on the new as -built to ensure consistency with the approved plans. Any future modifications to the retention area should be reviewed by the City to ensure the peak discharges rates and runoff volume are not further exceeded and the required treatment volume is provided. Existing Inlet Remediation Options: Install the Type C structure and modify the existing structure per the approved plans. Regrade the driveways of Lot 1 & 2 and raise the existing inlet while maintaining positive slope into the inlet. Based on the as-builts, it appears the inlet can be raised slightly to create a smoother slope transition 7 4 Attachment to the April 22, 2024 City Council Special Meeting Minutes ORANGE AVENUE te NO ID. LND 46H. I IfrIej LaP LOT 2 BLOCK 53 LOT 3 BLOCK 53 --a - - - - 4 - - _ W° Ow ENCE 1 STOW TONIHDE 1 STOW TONIHDE FFE GARAGE ----- B, (P) a II (Ml 4 CONC WALK Win So.Ue 3 W s rr rr e !{ ° svunL. LIME 48' R\W — C\L — NAIL & DISK STAMPED LNF FILLMORE AVENUE Ta' recP I su so s°——T°---TO---S°— Sr,--zu su-- su SD -su—-s°---T° RATE EL,. aas' 113,97 (M) 1 STOW TONIHONE GARAGE FEE,. BLOCH 53 CONC. PAD 7 ®MWY to 24 REMAINDER OF LOT 12 BLOCK 53 98 b. NAIL & DISK STAMPED Michel S Allyn 2zs oG 4BE 0.0 MAGNOLIA AVENUE NO ID. I.R. LEGAL DECRIPTION LOT(s) 10. THE MAP OR PLAT THEREOF RECORDED IN PLAT KU 3, GE(s)DT OF TH, PUDLC R cOFT' a o ExcEF, FHE EAn zs ai Eim e SURVEYORS NOTES: 1. THIS PROPERTY IS LOCATED IN FLOOD ZONE(S) X. THE GIN FLOOD IITY NO. m* G. Hzs0n4. EFFECTIVE DATE. MARCH 1T, 2014. COMMUNPANEL NO ITY Z THE BEARINGS SHOWN ARE RASED ON AN ASSUMED NORTH MERIDI,N, 50 OO oo E ALONG THE SOUTH BEING N R/W NE OF JEFFERSON AVENUE-3. THIS IS REAL PROPERTY BEING SITUATED IN SECTION 23. TOWNSHIP 24S. RANGE Digitally signed by Michael S Allen ON:c-US o-ALLEN ENGINEERING INC, ou-A01410C000001/68/05/8/ s' F00008671, cn-Michael S Allen s. Date:2022.07.08 16:35:42-04'00 ,. 0 20' GRAPHIC SCA. 7/8/22 AS -BUILT RNB NSA DATE REVISIONS BY CHICO FOR: CAPE III, LLC DATE 07/08/22 THE VILLAS AT FILLMORE CAPE CANAVERAL FLORIDA PAVING AND DRAINAGE PLAN ALLEN GINEERING, INC. SCALE JOB NO. 200024 DRAM DPA SHT. NO. C-102 Attachment to the April 22, 2024 City Council Special Meeting Minutes April 4, 2024 TO: David Dickey Community & Economic Development Director City of Cape Canaveral FROM: Kiel Causby, P.E. Kimley-Horn and Associates SUBJECT: Villas at Fillmore — Stormwater Memorandum Parcel Numbers: 24-37-23-67-*-1 24-37-23-67-*-2 24-37-23-67-*-3 24-37-23-67-*-4 BACKGROUND: The City of Cape Canaveral ("City") has been notified of potential drainage infrastructure and site work not constructed per the approved plans prepared by Allen Engineering, Inc. ("Allen Engineering") dated September 24, 2020, for a residential site off Fillmore Avenue known as the Villas at Fillmore. The site consists of two (2) duplex buildings totaling four (4) dwelling units. In 2022, Certificate of Occupancy were issued for the residential units. Currently, Florida, Power, & Light Company ("FPL") is removing an overhead power pole located in the rear of the site which has disrupted a portion of the constructed retention area. Based on conversations with the City, once FPL is finished the retention area will be restored to the approved design conditions. The City has requested Kimley-Horn to perform a site visit to observe the constructed drainage system and review project documents uploaded to the City. Kimley-Horn will compare the site observations and as-builts to the original approved plans and evaluate the site and plans based on current City code standards. A copy of the approved plans and as-builts are included in Appendix A and Appendix B respectively. The approved plans prepared by Allen Engineering, dated September 24, 2020, specified the following drainage infrastructure improvements listed below. • A dry retention pond wraps around the sides and rear of the duplex buildings. • Finish floor elevations are at elevation 10.10. • A 24-inch outfall structure located in the retention area between lots 2&3 with a rim elevation of 9.25. • A 12-inch HDPE pipe that conveys the stormwater from the outfall structure to a proposed Type C structure. • A Type C structure located between the Lot 2 and 3 in the green area between the driveways. This structure shows a proposed rim elevation of 6.65. • An 18-inch HDPE pipe that conveys water from the proposed Type C structure to the existing drainage structure located within the Lot 2 driveway. • An existing drainage structure that was proposed to be raised such that it would be flush with the proposed paver driveway. The existing grate was to be replaced with a solid cover. Kimley-horn.com 7341 Office Park Place, Suite 102, Melbourne, FL 32940 321-430-1138 Attachment to the April 22, 2024 City Council Special Meeting Minutes Page 2 FINDINGS: Site Visit and Document Review: Kimley-Horn conducted a site visit on February 26, 2024 to observe the drainage system of the site and reviewed the as -built signed by Allen Engineering dated 07/08/22. Site photos from the field visit are included in Appendix C. The following deviations from the approved plans are noted below: • The constructed retention area does not match the cross -sections outlined on the approved plans. o As-builts callout the bottom of the retention area at elevation 9 instead of 8 per the approved plans. o Field measurements show that the retention area width varies from 6-4 feet and does not match the approved plans. o Field observations show the side slopes vary through the retention area and the slopes appear steeper than 4:1. • A 12-inch outfall structure was installed instead of the 24-inch outfall structure. Based on the as -built, the rim of the outfall structure was installed at elevation 9.12 instead of 9.25 per the approved plans. • The as -built does not provide the size of the pipe installed, but a field measurement shows that a 12-inch pipe was installed, which is consistent with the approved plans. See Photo 4 in Appendix C. • The proposed Type C structure was not installed. Based on the site visit, a water main and gas line was flagged where the proposed structure would have been installed. Instead, the constructed drainage system ties into the existing drainage inlet located at the edge of the driveway. The existing drainage inlet was not raised per the approved plans. See Photo 2 in Appendix C. • An additional yard drain was installed in the front yard which was not shown in the approved plans. The yard drain appears to have been added to connect the outfall pipe to the existing drainage inlet located at the driveway. • Based on the as-builts the lowest finish floor elevation is 9.94. which is 2 inches lower than the approved plans. Water Quality: Per City Code: • Sec. 90-149.1.b - Retention volume shall be provided equal to 50 percent of the amounts stated in subsection (1)a. of this section, computed for wet detention or runoff from the first inch of rainfall, whichever is greater. The storage must be recovered within 72 hours following rainfall. • Sec. 90-149.1.a - Wet detention treatment volume shall be the first inch of runoff from the developed project and offsite areas draining into the treatment facility or the total runoff of 2.5 inches times the percentage of imperviousness, whichever is greater. Based on the Stormwater Computations prepared by Allen Engineering dated September 2020, the site is required to treat 894 cubic feet of stormwater runoff. The retention area was designed to provide 1,243 cubic feet of treatment and recovers the treatment volume in 11 hours. The designed retention Kimley-horn.com 7341 Office Park Place, Suite 102, Melbourne, FL 32940 32 1-430-1138 Attachment to the April 22, 2024 City Council Special Meeting Minutes Kimley>>>Horn Page 3 area meets the City's water quality requirements of Section 90-149.1 A copy of the Stormwater Computations prepared by Allen Engineering is included in Appendix D. Based on the review of the as-builts and field observations, the following was noted: • The retention area width appeared to be narrower than the width shown on cross -sections per the design plan. • Bottom of retention is at elevation 9 opposed to being at elevation 8 per the design plans. • The rim of the outfall structure is set at elevation 9.12 compared to 9.25 per the design plans. Per field observations, the constructed retention area appears narrower and swallower than the retention area in the approved plans. Also, the outfall rim was set at a lower elevation. As a result, based on these observations the retention area provides 18 cubic feet of treatment which is only 2% of the required treatment volume. It is be noted that the calculated treatment volume is a rough approximation based on the field observations and the limited information provided on the as-builts. To accurately calculate the provided treatment volume, a formal survey would need to be completed. A copy of the Stormwater Treatment Calculations based on the as-builts and field observations are included in Appendix E. Water Quantity: Per City Code: • Sec. 90-148.1.a - The post -development peak rates of discharge must not exceed the pre - development rate for the 25-year, 24-hour and the five-year, 24-hour storms. • Sec. 90-148.2 - The post -development volume of direct runoff must not exceed the pre - development level for a 25-year, 24-hour storm event. Based on the Stormwater Computations prepared by Allen Engineering dated September 2020, a summary of the pre and post peak discharge rates and runoff volumes are provided below: Pre vs Post Peak Discharge Rates Storm Event Pre -Development Peak Discharge Rates (cfs) Post Development Peak Discharge Rates (cfs) Difference (cfs) 5 Year — 24 Hour 0.010 0.04 0.030 Increase 25 Year — 24 Hour 0.066 0.24 0.174 Increase Pre vs Post Peak Runoff Volumes Storm Event Pre -Development Runoff Volume (af) Post Development Runoff Volume (af) Difference (af) 25 Year — 24 Hour 0.051 0.117 0.066 Increase Kimley-horn.com 7341 Office Park Place, Suite 102, Melbourne, FL 32940 32 1-430-1138 Attachment to the April 22, 2024 City Council Special Meeting Minutes Kimley>>>Horn Page 4 The designed retention area does not meet the City's water quantity requirements of Section 90-148. Although the requirements aren't met, the Stormwater Computations state "Stormwater Management has been utilized to the greatest extent possible given the circumstances of the small site. It is believed that the increase in the peak discharge rate and total runoff is negligible." A memorandum dated December 2, 2020, prepared by the City Engineer at the time recommended approval of the design plans to the City. Therefore, the City approved the plans allowing with the increased discharges rates and runoff. A copy of the memorandum is included in Appendix F. Based on conversations with the City and residents, the site has no history of flooding and the soils in this area are known to have good percolation rates. The residents voiced their concerns that during heavy storm events the water overtops the 12-inch outfall structure and continues to sheet flow to the front yard and ultimately drains into the existing inlet at the edge of the driveway. The overtopping could be caused by the limited storage volume within the constructed retention area. The overtopping could also be caused by the reduced inlet capacity of the smaller outfall structure. The approved plans specified a 24-inch outfall structure. Additional City Code Stormwater Requirements: Per City Code: • Sec. 90-172 — Both dry and wet detention/retention areas may be used in the design of the City's stormwater management systems. The perimeter banks of either system shall have a slope no greater than 4:1; unless otherwise approved by the city engineer. • Sec. 98-111.e.3 - The minimum size of storm sewers or culverts shall be 15 inches. Equivalent elliptical pipe sizes may be substituted based on the approval of the city engineer. The side slopes of the retention area are not called out on the as -built but based on field observations, the side slopes vary throughout the site and appear to be steeper than 4:1. Also, the outfall pipe is a 12-inch which is consistent with the approved plans but per City code, Sec. 98-111.e.3, the minimum storm sewer size is a 15-inch. Kimley-horn.com 7341 Office Park Place, Suite 102, Melbourne, FL 32940 321-430-1138 Attachment to the April 22, 2024 City Council Special Meeting Minutes Kimley>>>>Horn Page 5 RECOMMENDATIONS: The following modifications are recommended: • The constructed retention area does not meet the design intent of the approved plans. Although the retention area per the approved plans, does not meet the City's water quantity requirements, Allen Engineering stated the increased peak discharge rates and runoff are negligible and, the City approved the design plans based on recommendation of the City Engineer at the time. Therefore, it is recommended once FPL completes their work that the retention area is reconstructed to be consistent with the approved plans prepared by Allen Engineering. • A resident noted that during heavy storms, the water overtops the existing 12-inch outfall structure and sheet flows through the front yard. The 12-inch outfall structure should be replaced with a 24-inch outfall structure per the approved plans. Also, once the retention area is reconstructed, it will provide more storage and reduce the amount of water overtopping the structure. • The rim of the outfall structure should be raised from 9.12 to 9.25 to provide adequate water quality treatment per the approved plans. • A new as -built is recommended once the retention area has been reconstructed to confirm its consistent with the approved plans. Adequate detail will need to be provided on the new as - built to ensure consistency with the approved plans. • Any future modifications to the retention area should be reviewed by the City to ensure the peak discharges rates and runoff volume are not further exceeded and the required treatment volume is provided. • Existing Inlet Remediation Options: 1. Regrade the driveway of Lots 1 & 2 and raise the existing inlet while maintaining positive slope into the inlet. Ensure the sidewalk meets ADA requirements. Based on the as-builts, it appears the inlet can be raised slightly to create a smoother slope transition. A survey is recommended prior to performing any work. 2. Install the proposed Type C structure and modify the existing structure per the approved plans. Based on field observations, a potential gas main was identified in the area that may require relocation. A survey is recommended prior to performing any work. Kimley-horn.com 7341 Office Park Place, Suite 102, Melbourne, FL 32940 321-430-1138