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Ordinance No. 14,605ORDINANCE NO. 14,605 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF BAYTOWN, TEXAS, AMENDING CHAPTER 18 'BUILDINGS AND BUILDING REGULATIONS," ARTICLE II 'BUILDING CONSTRUCTION STANDARDS," DIVISION 3 "BUILDING CODE," SECTION 18-93 "SIDEWALKS," SUBSECTION (C)(1) AND SECTION 18-95 "DRAINAGE REQUIREMENTS FOR NONRESIDENTIAL DEVELOPMENTS," SUBSECTIONS (A) AND (B); AND DIVISION 4 'BUILDING AND DEVELOPMENT PERMITS," SECTION 18-126 "SURVEY OR SITE PLAN REQUIRED; ACCESS MANAGEMENT," SUBSECTION (B) AND SECTION 18-127 "FLOODPLAIN" OF THE CODE OF ORDINANCES, BAYTOWN, TEXAS; AMENDING CHAPTER 34 "ENVIRONMENT," ARTICLE VIII "WATERSHED PROTECTION," SECTION 34-423 "DEFINITIONS," SECTION 34-425 "PERMITS AND SITE PLANS," SUBSECTION (K); AND SECTION 34-426 "IMPACT STUDY" OF THE CODE OF ORDINANCES, BAYTOWN, TEXAS; AMENDING THE CODE OF ORDINANCES, BAYTOWN, TEXAS TO ADD A NEW CHAPTER TO BE NUMBERED AND ENTITLED CHAPTER 109 "ENGINEERING AND CONSTRUCTION STANDARDS"; AMENDING CHAPTER 110 "FLOODS" OF THE CODE OF ORDINANCES, BAYTOWN, TEXAS; AMENDING CHAPTER 114 "SEWER AND WATER LINE EXTENSIONS," ARTICLE III "DEVELOPMENTS," SECTION 114-66 "APPLICATION," SUBSECTION (A); AND ARTICLE IV "IMPACT FEES," SECTION 114-103 "DETERMINATION OF SERVICE UNITS" OF THE CODE OF ORDINANCES, BAYTOWN, TEXAS; AMENDING CHAPTER 122 "STREETS AND SIDEWALKS," ARTICLE I "IN GENERAL," SECTION 122-3 "OBSTRUCTION OF VIEW; VISIBILITY TRIANGLE," SUBSECTION (A) AND ARTICLE II "CONSTRUCTION OF SIDEWALKS, DRIVEWAYS AND CURB AND GUTTERS," DIVISION 1 "GENERALLY," SECTION 122-31 "CURB CUTS; CONCRETE DRIVEWAYS REQUIRED WHERE CITY INSTALLED CURB AND GUTTERS"; DIVISION 2 "LICENSE," SECTION 122-63 "PERMIT REQUIRED FOR EACH JOB"; AND DIVISION 3 "SPECIFICATIONS AND OTHER REGULATIONS," SECTION 122-91 "CONCRETE WORK"; SECTION 122-92 "RECONSTRUCTION OF SIDEWALKS ON CHANGE OF LINE AND GRADE BY CITY"; SECTION 122-96 "PRIVATE DRAINS"; SECTION 122-97 "INSTALLATION OF DRAINAGE CULVERTS"; AND SECTION 122-99 "GENERAL REQUIREMENTS" OF THE CODE OF ORDINANCES, BAYTOWN, TEXAS; AMENDING CHAPTER 126 "SUBDIVISIONS," ARTICLE IV "IMPROVEMENTS," DIVISION I "GENERALLY," SECTION 126-453 "INSPECTION," SECTION 126-454 "AS -BUILT OR RECORD PLANS," SECTION 126-455 "FINAL ACCEPTANCE," SECTION 126-458 "TRAFFIC CONTROL DEVICES"; SUBDIVISION 11 "STREETS," SECTION 126-507 "PRINCIPAL ARTERIALS, MINOR ARTERIALS AND COLLECTORS," SECTION 126-508 "RIGHT-OF-WAY WIDTH," SECTION 126-509 "CURVES," AND SECTION 126-510 "INTERSECTIONS"; SUBDIVISION III "LOTS," SECTION 126-546 "SCOPE"; SUBDIVISION IV "EASEMENTS," SECTION 126-581 "DRAINAGE EASEMENT" SUBSECTION (C) AND (D), SECTION 126-582 "UTILITY EASEMENTS," SECTION 126-583 "PRIVATE EASEMENTS"; AND ARTICLE V "ENGINEERING AND CONSTRUCTION STANDARDS," DIVISION 1 "GENERALLY," SECTION 126-611 "ENGINEERING DATA"; DIVISION 2 "STREETS"; DIVISION 3 "STORMWATER DRAINAGE"; AND DIVISION 4 "UTILITIES" OF THE CODE OF ORDINANCES, BAYTOWN, TEXAS; PROVIDING A REPEALING CLAUSE; CONTAINING A SAVINGS CLAUSE; PRESCRIBING A MAXIMUM PENALTY OF FIVE HUNDRED AND NO/100 DOLLARS ($500.00) FOR EACH VIOLATION; AND PROVIDING FOR THE PUBLICATION AND EFFECTIVE DATE THEREOF. ****************************************************************************** BE IT ORDAINED BY TIIE CITY COUNCIL OF THE CITY OF BAYTOWN, TEXAS: Section 1: That Chapter 18 "Buildings and Building Regulations," Article II 'Building Construction Standards," Division 3 'Building Code," Section 18-93 "Sidewalks," Subsection (c)(1) of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 18. BUILDINGS AND BUILDING REGULATIONS ARTICLE II. BUILDING CONSTRUCTION STANDARDS DIVISION 3. BUILDING CODE Sec. 18-93. Sidewalks. (c) Exempt. Construction of sidewalks shall not be required: (1) On a property where a primary residential structure in a residential zoning district, as determined by the ULDC, is being constructed but there is not enough space within the right-of-way to construct a sidewalk as determined by the director of public works and engineering; Section 2: That Chapter 18 'Buildings and Building Regulations," Article II 'Building Construction Standards," Division 3 'Building Code," Section 18-95 "Drainage requirements for nonresidential developments," Subsections (a) and (b) of the Code of Ordinances, Baytown, Texas, are hereby amended to read as follows: CHAPTER 18. BUILDINGS AND BUILDING REGULATIONS ARTICLE II. BUILDING CONSTRUCTION STANDARDS DIVISION 3. BUILDING CODE Sec. 18-95. Drainage requirements for nonresidential developments. (a) A nonresidential development is defined, for the purposes of this section, as any improvement or construction on a site greater than or equal to one acre of land area and such improvement or construction is not regulated by chapter 126 pertaining to single- family residential subdivisions. (b) Any person desiring to build a nonresidential development shall provide drainage improvements for the development. The drainage improvements shall be designed to ensure that when a 100-year rainfall event, as defined by article IV of chapter 109 of this code, occurs, the drainage from the development will not increase the water level in any existing creek, stream or bayou above the water level previously associated with such 100- year rainfall event. Section 3: That Chapter 18 'Buildings and Building Regulations," Article II 'Building Construction Standards," Division 4 'Building and Development Permits," Section 18-126 "Survey or site plan required; access management," Subsection (b) of the Code of Ordinances of the City of Baytown, Texas, is hereby amended to read as follows: CHAPTER 18. BUILDINGS AND BUILDING REGULATIONS ARTICLE II. BUILDING CONSTRUCTION STANDARDS DIVISION 4. BUILDING AND DEVELOPMENT PERMITS Sec. 18-126. Survey or site plan required; access management. (b) Access management. The access management shall be designed and constructed in accordance with the standards set forth in article III of chapter 109 of this code. Section 4: That Chapter 18 'Buildings and Building Regulations," Article II 'Building Construction Standards," Division 4 "Building and Development Permits," Section 18-127 "Floodplain" of the Code of Ordinances of the City of Baytown, Texas, is hereby amended to read as follows: CHAPTER 18. BUILDINGS AND BUILDING REGULATIONS ARTICLE II. BUILDING CONSTRUCTION STANDARDS DIVISION 4. BUILDING AND DEVELOPMENT PERMITS See.18-127. Floodplain. No building permit shall be issued for the construction or repair of any structure within a moderate or special flood hazard area, which permit does not require the entire structure to meet the standards established by this code. Section 5: That Chapter 34 'Environment," Article VIII "Watershed Protection," Section 34-423 "Definitions," of the Code of Ordinances, Baytown, Texas, is hereby amended to amend the definition of "Director," which definition shall read as follows: CHAPTER 34. ENVIRONMENT ARTICLE VIII. WATERSHED PROTECTION Sec.34-423. Definitions. The following words, terms and phrases, when used in this article, shall have the meaning ascribed to them in this section, except where the context clearly indicates a different meaning: Director means the director of public works and engineering. Section 6: That Chapter 34 "Environment," Article VIII "Watershed Protection," Section 34-425 "Permits and site plans," subsection (k) of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 34. ENVIRONMENT ARTICLE VIII. WATERSHED PROTECTION Sec. 34-425. Permits and site plans. (k) If construction described in the watershed protection zone permit has not commenced within 180 days from the date of issuance, the permit shall expire. If construction described in the watershed protection zone permit is suspended after work is commenced, the permit shall expire 180 days after the date the work is ceased. Section 7: That Chapter 34 "Environment," Article VIII "Watershed Protection," Section 34-426 "Impact study" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 34. ENVIRONMENT ARTICLE VIII. WATERSHED PROTECTION Sec. 34-426. Impact study. (a) All applications for a watershed protection zone permit shall include an impact study. (b) An impact study shall be prepared and sealed by a professional engineer licensed in this state who is experienced in the preparation of environmental studies and shall include, at a minimum, the following information: (1) Description of the proposed project including location and extent of impervious surfaces; on -site processes or storage of materials; the anticipated use of the land 2 and buildings; description of the site including topographic, hydrologic, and vegetative features; (2) Characteristics of natural runoff on the site and projected runoff with the proposed project, including its rate and chemical characteristics deemed necessary to make an adequate assessment of water quality; (3) Measures proposed to be employed to reduce the rate of runoff and pollutant loading of runoff from the project area, both during construction and after; (4) Proposed runoff control and water quality protection measures for the site. These measures shall be designed with the goal of ensuring that the rate of surface water runoff from the site does not exceed pre -development conditions and that the quality of such runoff will not be less than pre -development conditions. Special emphasis shall be placed on the impacts of proposed encroachments into any required buffer; and (5) Where the developer of the property subject to the terms of this article seeks to utilize existing or planned off -site stormwater quality management facilities, the developer shall provide a written certification that the owner of the off -site facilities will accept the runoff and be responsible for its adequate treatment to a level acceptable to the director. (c) Such study shall be submitted to the director for review and approval concurrent with the submission of applications for review and approval of site or subdivision plans and applications for watershed protection zone permits. Section 8: That the Code of Ordinances, Baytown, Texas is hereby amended to add a new chapter to be numbered and entitled Chapter 109 "Engineering and Construction Standards" is hereby amended to read as follows: CHAPTER 109. ENGINEERING AND CONSTRUCTION STANDARDS ARTICLE I. IN GENERAL See. 109-26. Definitions. The following words, terms and phrases, when used in this chapter, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning: Americans with Disabilities Act (ADA) means the civil rights legislation signed into law on July 26, 1990, and all amendments thereto. Collector means a street so indicated on the major thoroughfare plan, such plan being on file with the director of planning and community development. Commission means the city planning and zoning commission. Detention pond means a basin that is designed to hold runoff from an area and then release the runoff to a receiving body of water over time. Director means the director of the public works and engineering department. Impervious surface means any surface that impedes or prevents natural infiltration of water into the soil. Impervious surfaces may include, but are not limited to, asphalt, concrete, gravel, crushed stone, clay, bedrock, limestone, compacted soil, wood, glass and plastic products. Local street means all other streets not otherwise indicated on the major thoroughfare plan, such plan being on file with the director of planning and community development. Lot means a parcel or portion of land in a subdivision or plat of land, separated from other parcels or portions by description as on a subdivision or record of survey map or by metes and bounds, for purpose of sale or lease to or separate use of another. Plat has the meaning ascribed in section 126-1 of this code. Private easement is a granting of usage rights to a defined tract of land between private persons or entities and does not grant the right of use to the general public. Public easement is a granting of specific or general usage rights to a defined tract of land from the owner of the land to the public at large by plat, a separate recorded instrument of conveyance, or condemnation. Texas Accessibility Standards (TAS) means the rules and requirements promulgated under the authority of Texas Government Code, Chapter 469, Elimination of Architectural Barriers, and Texas Occupations Code Chapter 51. Sec. 109-27. Scope of chapter. This chapter shall apply to all development and infrastructure projects, private or public, that endeavor to improve a tract of land or make public or private infrastructure available to a tract of land within the corporate limits of the city or any tract of land within the city's extraterritorial jurisdiction subject to chapter 126 of this code. 6 Sec. 109-28. Variances. (a) Unless specifically stated to the contrary, variances to the criteria set forth in this chapter will be subject to the standards and requirements of this section. (b) Variances from the criteria and standards established in this chapter shall be requested in writing from the applicant on forms provided by the director. (c) Individuals seeking a variance are required to submit a separate variance application for each criteria variance sought. (d) Complete variance applications must be submitted on or before the time of the original construction plan submittal. Complete variance applications will include, at minimum, the following: (1) the specific criteria from which the applicant is seeking relief; (2) the specific, undue hardship resulting from compliance with the criteria; (3) the proposed alternative to the criteria; (4) a comparison of the criteria to the proposed alternative as it relates to the undue hardship resulting from compliance with the established criteria; and (5) any potential effects on the health, safety, welfare, and convenience of the general public. The director may request additional information as necessary to make a decision on the proposed variance. (e) Variance applications shall be sealed by a professional engineer licensed in the state. (f) Incomplete variance requests will be rejected. (g) The director will review the variance request considering the information provided on the application and will determine if granting the request will: (1) have a detrimental effect on city infrastructure; (2) create a hardship in the maintenance of city or private infrastructure; (3) violate the rights of property owners; (4) violate a regulatory requirement to which the city must adhere; (5) be aligned with the overall intent of the criteria in this chapter; or (6) create a beneficial outcome for all parties involved. (h) The director's approval or denial of the variance request shall be final and binding on the applicant. (i) The applicant will receive notification of the approval or denial of the variance request. (j) Approved variances shall be listed on the cover sheet of the permitted set of plans. ARTICLE II. EASEMENTS Sec. 109-51. All easements. (a) All public infrastructure not located within a proposed or established public right-of-way shall be located within an easement that has been dedicated for the public use and recorded with the county clerk. (b) All easements dedicated for city -maintained infrastructure that are recorded by separate instrument shall be reviewed by the city attorney's office and shall include a graphic representation of the proposed easement. (c) The encroachment upon any utility or drainage easement with infrastructure or improvements that are not maintained by the city shall require approval from the director. Sec. 109-52. Utility easements. (a) The minimum width of utility easements dedicated for city utilities shall be 16 feet wide or as otherwise required by the director. (b) All utility easements shall have a 5-foot building setback measured from the edge of the easement away from the interior of the easement. (c) All utility easements shall be kept clear of fences, buildings, plantings and other obstructions to the operation and maintenance of the easement. (d) Utility easements shall not be established for surface utilities. Sec. 109-53. Drainage easements. (a) The minimum width of drainage easements shall be 16 feet wide or as otherwise required by the director. (b) All drainage easements shall have a 5-foot building setback at a minimum measured from the edge of the easement away from the interior of the easement. (c) Drainage easements shall not be used to establish surface drainage facilities. Surface drainage facilities are required to be located within drainage reserves. Sec. 109-54. Private easements. (a) Private utility easements are required where private utilities cross a property line. (b) Private easements are required to be recorded with the county clerk's office. (c) If a private easement is required for a project undergoing permit review, the private easement shall be submitted to the director after recordation with the county clerk. Sec. 109-55. Cross -access easements. (a) The division, subdivision, development or redevelopment of a tract of land shall require the creation of cross -access easements or agreement across the tract to be divided, subdivided, developed or redeveloped. This requirement is intended to remove the possibility of a tract of land being without access to the public right-of-way. (b) No structure that will impede the flow of vehicular traffic shall be constructed within this designated easement. (c) Cross -access easements shall have a minimum width of 24 feet, a centerline curve radius of 35 feet and a minimum tangent of 50 feet between reverse curves. (d) Cross -access easements shall be dedicated and recorded with the plat if a plat is required. If a plat is not required, the easement shall be recorded by separate instrument with the county clerk's office. A copy of the recorded document shall be provided as part of the permit approval process. ARTICLE III. STREETS Sec. 109-76. Geometric standards. (a) Roadway material and subgrade designs shall conform to city standard details. (b) Roadways shall have the following design characteristics: (c) Curves. (1) Horizontal curves. a. Local roads shall have a minimum centerline radius of 300 feet. Under no circumstance shall a local road have a centerline radius of less than 150 feet. b. Collectors shall have a minimum centerline radius of 800 feet. C. Arterials shall have a minimum centerline radius of 2,000 feet. d. The horizontal sight line offset shall be determined using the methods described in the AASHTO publication, A Policy on Geometric Design of Highways and Streets, 7'h edition. The HSO shall be kept clear of all visual obstructions more than 42 inches above the surface of the roadway. (2) Reverse curves are to be separated by a minimum tangent of 100 feet. (3) A vertical curve design is required when the algebraic difference in grade exceeds I percent. (4) A variance to these requirements may be granted by the commission pursuant to division 5, article II, Chapter 126 of this code. (d) Intersections. (1) The intersection of a driveway or public or private roadway with a public or private roadway shall intersect at 90-degree angles. a. A variance to this requirement may be granted by the commission pursuant to division 5, article II, Chapter 126 of this code. Intersections may not be skewed more than 15 degrees from perpendicular. 10 (2) A sight triangle shall be developed for the intersection of all private or public connection access points to all private or public roadways. a. The development of each sight triangle shall follow the methodologies presented in the AASHTO publication A Policy on Geometric Design of Highways and Streets, 7`h edition. b. Sight triangles shall be kept clear of all visual obstructions greater than 42 inches above the roadway surface unless approved by the director. (3) End returns for intersections shall have the following radii: Min Max Min Max Min Max Min Max Min Max Min Max Local 25' 25' 35' 25' 35' 25' S' 10' 10' 25' Collector 25' 35' 35' 35' 25' 35' 10' 25' Arterial Private 25' 25' 35' 25' 35' 25' S' 10' 10' 25' Residential 5' 10' S' 10' driveway Non-residential 10' 25' 10' 25' 10' 25' 10' 25' driveway (4) The minimum grade line from one end return point to the other shall be 0.70 percent. Sec. 109-77. Streetlights. Developers shall be required to install ornamental metal standards and LED lamps on public streets in subdivisions within the city limits as follows: (1) The location and minimum number of streetlights shall be determined by the director of planning and community development. A developer may appeal the determination of the director of planning and development services to the commission if the developer wishes to install a lesser number of streetlights. (2) Underground installation charges for the subdivision shall be based on the cost to CenterPoint and shall be paid to the city by the developer. Any other charges related to the installation of streetlights shall be paid by the developer. Upon payment of all installation charges, the city will pay the monthly service for the streetlights. (3) Streetlights shall be located so as to be of general benefit to the surrounding neighborhood. (4) A developer commits an offense if he intentionally or knowingly fails to pay for street lighting as required and approved by the director of planning and community development within 30 days after notice by the director of planning and community development that electrical power service is available for street lighting. (5) For those subdivisions where citizens would like additional street lighting for midblock locations, when the electrical service is provided at the rear of properties, the requestor shall be responsible for providing the required easement to the street. (6) When additional street lighting is requested at intersections, the city will provide only the monthly charge for the light. Requests for additional street lighting at either midblock locations or intersections shall be made to the director of planning and development services, who shall consider the benefit of the streetlight to the surrounding area, the cost of service of the streetlight to the city and any other factors deemed necessary to approve or disapprove the request. The decision of the director of planning and development services may be appealed to the city council by the requestor. Sec. 109-78. Street name signs. Street name signs approved by the director shall be provided and installed at all intersections by the entity responsible for the installation of the roadway. Section 109-79. Access management. (a) Cross -access easements are required and shall be provided in accordance with article II of this chapter. (b) Connection access spacing. (1) The location of any nonresidential access connection point to a public right-of-way, street or alley shall be approved by the director prior to the issuance of a construction permit. 12 (2) If a tract of land which is to be divided, subdivided, developed, or redeveloped has an existing access connection point, this existing access connection point does not need the approval of the director to remain; provided that, the nature, character, or volume of vehicular traffic to or from the tract of land does not change. If the nature, character, or volume of the vehicular traffic to or from the tract of land changes due to the division, subdivision, development, or redevelopment of said tract, then all access connection points for the tract shall meet the requirements of this code. (3) To provide for the safe ingress and egress of vehicular traffic, to reduce the number of conflict points, and to facilitate traffic flow within the public right-of-way, nonresidential access connection points shall be placed no closer than the following distances from an existing or proposed access connection point, as measured between the nearside edges of the vehicular traveled ways: Posted or statutory speed limit (mph) 1 Distance (ft) 11 1 �1 11 1 1 (4) When the separation requirements for nonresidential connection access points cannot be achieved because of the location of existing or proposed access connection points, the director may grant a separation variance for a connection access point provided the applicant provides documentation showing all of the following: a. The minimum separation requirements cannot be met due to existing or proposed access connection points; b. The applicant has made good -faith efforts to obtain cross access from an adjacent land -owner, who can provide the applicant with an acceptable connection access point to public right-of-way, and failed. This good -faith effort is to be documented and provided as part of the variance submittal process; and C. Access cannot be obtained from any other public right-of-way or private access connection point. When granting a separation variance, the director will indicate the approved location of the connection access point. 13 (c) Driveway alignment. (1) Proposed access connection points shall align with existing and proposed access connection points on the opposite side of the public right-of-way, street or alley and meet the minimum separation requirements from existing and proposed access connection points on both sides of the public right-of-way, street or alley. Access connection points must be aligned with existing median openings or meet the access point separation requirements treating the median openings as a connection access point. (2) Connection access points proposed along a public right-of-way, street or alley which is physically divided by a non -traversable median or other method are not required to align with or meet the connection access point separation to, from or with a connection access point on the opposite side of the physical divide. (3) Cross -median access shall not be granted, allowed or provided for when a proposed connection access point does not align with or meet the connection access point separation to, from or with a connection access point on the opposite side of a physical divide. (4) At an intersection where a public street terminates at the intersection of a connecting cross street, a nonresidential connection access point on the cross street in alignment with the terminating street must safely accommodate the cross section of the intersection street. (5) Residential connection access points shall not be placed within the intersection of two streets or alleys. (6) Residential connection access points shall maintain a minimum spacing of 30 feet from an adjacent, parallel publicly traveled way. (7) Connection access points shall not be placed within acceleration, deceleration, left - turn or right -turn lanes. (8) Driveways are not allowed within signalized intersections unless a variance from the director is granted; provided: a. The driveway's egress approach traffic volume is at least half of the approach volume for the opposing intersection approach. b. The cross-section of the proposed driveway aligns with and can accommodate the traffic flow from the intersecting approach. C. The minimum connection access point spacing for all other connection access points is maintained. 14 d. The driveway's egress approach traffic would satisfy either Warrant 1 or Warrant 2, as described in Chapter 4 of the Texas Manual on Uniform Traffic Control Devices. (9) Residential lots may have only one connection access point to publicly maintained rights -of -way or alleys unless: a. The frontage for the lot exceeds 75 feet in width; b. The connection access points are connected, as with a circular drive; C. The total number of connection access points for the lot does not exceed two; d. The spacing between the connection access points is at least 40 feet; e. The width of each connection access point is no greater than 16 feet; and f. All other connection access point connection spacing requirements are met. (10) Residential connection access points may not be made with roadways classified as a collector or greater without approval of the director. Sec. 109-80. Connection access points (driveways). (a) Permit required. (1) A permit issued from the director is required prior to constructing a connection access point to a publicly maintained roadway. (2) A permit issued from the director is required prior to reconstructing a connection access point to a publicly maintained roadway. (3) Driveway construction permits will only be approved for sites: (1) as a part of a current building permit application; (2) as a part of a current engineering permit application; or (3) to reconstruct or modify an existing driveway that is serving an existing, active, permitted structure or land use. 15 (b) Design. (1) All connection access points are to be designed in accordance with the current city driveway standards. (2) The width of a driveway is measured at the right-of-way line. (3) Nonresidential driveways located on collector streets or above shall have a minimum throat depth of 20 feet, measured from and perpendicular to the right-of- way line. (c) Demolition. On sites where a demolition order has been issued pursuant to any lawful authority, including section 18-129 or section 18-1337 of this code, each driveway serving the building(s) to be demolished shall also be demolished. (1) If the demolished driveway was connected to a curbed roadway, a curb shall be constructed within the gap created by the demolished driveway. a. The area behind the newly constructed curb shall be backfilled to match the existing natural ground on either side of the demolished driveway. b. The backfilled area shall have vegetation established in a manner acceptable to the director. (2) If the demolished driveway crossed a roadside ditch, the driveway culvert shall be removed and the area converted to a roadside ditch matching the cross section, slope and capacity of the existing roadside ditch. (3) If the demolished driveway was connected to a roadway without curbs, the area between the edge of the roadway and the right-of-way shall be backfilled to match the existing natural ground on either side of the demolished driveway. The backfilled area shall have vegetation established in a manner acceptable to the director. (4) Sidewalk within the demolished driveway. a. If the sidewalk was an ADA-compliant path that met current city sidewalk standards, the sidewalk may remain after demolition. b. If the sidewalk was not ADA-compliant or did not meet the current city sidewalk standards, the sidewalk shall be replaced with an ADA-compliant path that meets the current city sidewalk standards. 16 Sec. 109-81. Sidewalks. (a) All sidewalks within the publicly maintained right-of-way shall follow the Pedestrians in the Right of Way Accessibility Guidelines as proposed by the United States Access Board. (b) Sidewalk designs shall conform to the current city standard details. ARTICLE IV. STORMWATER DRAINAGE Sec. 109-101. Required. Adequate drainage shall be provided within the limits of the development. No proposed development shall impede the natural flow of surface runoff from adjacent lands, nor cause flooding on adjacent properties. The maximum allowable discharge rate from a proposed development or re -development to a receiving body or system shall be the undeveloped flow rate for the area of development or re -development. It is not permissible for a development to sheet flow overland flow to the public right-of-way. Sec. 109-102. Design storm events. For all developments, the sizing of inlets, storm sewers, outfalls, culverts and drainage ditches shall be based upon the following: (1) Design storm event. The design storm intensities within the city limits, shall be based upon the Harris County Region 3 NOAA Atlas 14 Rainfall Data for the 5- year and 100-year frequencies. The intensities shall be calculated using the following equation: b 1 — (Tc+d)e Where: a. I = intensity (in/hr) b. b = ➢ 52.32 (5-year) ➢ 60.66 (100-year) C. Tc = time of concentration ➢ The initial T� shall be calculated by dividing the length of the longest, most direct path of travel, point to point, by the applicable minimum velocities in the following table. If the 17 e. e = initial T,, is calculated to be less than 10 minutes, use an initial Tc of 10 minutes. ➢ The pipe flow Tc shall be calculated by dividing the upstream pipe reach by the actual pipe flow velocity (in that same reach and calculated using the continuity equation) and adding it to the upstream Tc. ➢ The use of any other method shall require the approval of the director. Developed Ditch 1 channel 2.00 2.50 Impervious 1.50 1.50 areas Compacted and bare earth 0.50 1.00 Grassy areas 0.35 0.50 Thick 0.25 0.35 vegetation ➢ 7.88 (5-year) ➢ 4.44 (100-year) ➢ 0.69 (5-year) ➢ 0.5797 (100-year) (2) Runoff computation. a. To determine the runoff rates for various areas, the standard rational method shall be used, utilizing the following formula: Q = C x I x A Where: Q = volumetric flow rate of runoff in cubic feet per second (cfs) C = runoff coefficient, either composite or simple I = rainfall intensity in inches per hour A = analysis area in acres B b. Calculation of the runoff coefficient: The runoff coefficient (or C factor) "C" values in the rational method formula will vary depending on the studied land use. There are two acceptable methods of establishing the C factor for a development or project. The method used to calculate the C factor shall be included with the required drainage area calculations. a. Method 1 (composite method) calculates a weighted average of all the different C factors of all the sub -areas contributing to the overall study area. The calculations and values used to determine the weighted C factor shall be included with the drainage area calculations. The following C factors are acceptable: The weighted average shall be calculated using the following equation: C = Z(Ci x Ai) Z Ai b. Method 2 (simple method) allows the engineer to select a pre- defined C factor for the entire study area. A selected, pre -defined, C factor must be compatible with the land use being studied. The following pre -defined C factors are acceptable: Previously developed Must use method 1 Previously undeveloped 0.30 Zoned SFE 1-acre lots 0.50 Zoned SF (up to 4 lots/acre 0.65 Zoned SF2 (up to 9 lots/acre 0.65 Zoned MF 1 (up to 15 units/acre 0.60 Zoned MF2 (up to 23 units/acre 0.75 Zoned MF3 (up to 30 units/acre 0.85 Zoned MU 0.90 Zoned NSC 0.90 Zoned GC 0.80 Zoned LC 0.80 Zoned ACE 0.95 19 (3) Drainage areas shall be: defined and delineated using the natural and proposed high points and the property boundaries, where appropriate; and b. each proposed drainage area shall have a single runoff collection point, no fewer. (4) Drainage calculations for both the 5-year and 100-year conditions shall be included in the proposed plans and shall run from node to node to the outfall structure. (5) The hydraulic grade line for 5-year events shall not extend above the top of pipe. (6) The hydraulic grade line for 100-year events shall not extend more than 12 inches above the top of curb. Sec. 109-103. Stormwater collection systems. (a) Design (1) All storm sewers. a. Sizing of storm sewers. Sewers shall be sized to carry the discharge (Q) derived from the rational method. Stormwater collection systems shall be designed to carry the 5-year Q up to the last inlet or set of inlets. Unless the stormwater collection system is connecting to an existing storm sewer system, an extreme event conveyance structure shall be constructed between the last inlet or set of inlets and the detention structure. The design velocity for sewers shall be calculated using Manning's equation and shall not be less than 3.0 feet per second (fps) for the 5-year storm. The actual velocity for storm sewers shall be calculated using the continuity equation and shall not exceed 8.0 fps for the 5-year storm. b. Sizing and spacing of inlets. Inlets shall be spaced no more than 300 feet from a high point for the street, measured along the gutter line. Inlets shall be located at low points in the street/gutter. The following inlet types, as shown on the city standard details, are acceptable. Any other inlet type or configuration must be approved by the director. 1. Type A inlets may be used in parking lots and grassy or vegetated areas. 20 2. Type C inlets may be used as curb inlets. 3. Type E inlets may be used in ditches. (2) City maintained storm sewers, outfalls, culverts and drainage ditches shall conform to the following: a. Manhole locations. Manholes (on inlets or junction boxes) shall be provided at a maximum spacing of 800 feet, measured along the conduit run and at all: 1. Pipe size or cross-section changes; 2. Inlet lead and conduit intersections; 3. Changes in pipe grade; and 4. Street intersections. b. Pipe. 1. Size. i. Storm sewer pipes designed to carry less than 5 cfs of flow shall have a minimum nominal diameter of 18 inches or equivalent cross section. ii. Storm sewer pipes designed to carry more than 5 cfs of flow shall have a minimum nominal diameter of 24 inches. iii. Box culverts shall have a minimum nominal size of 2 feet by 2 feet. 2. Material. i. Reinforced concrete pipe is preferred for storm sewer pipes; ii. Upon approval from the director, a different material may be selected from the approved products list, maintained by the director. 3. Cover. The minimum amount of cover, from the top of the pipe to natural ground, final grade, or bottom of road subgrade is 24 inches. 21 C. Ditches. The use of drainage ditches must be approved by the director. If approved, the ditch shall conform to the following: 1. The roadside ditch shall be designed to carry the 5-year event and maintain at least 6 inches of freeboard; 2. the design shall be evaluated under the 100-year storm conditions to show that nearby habitable structures will not be flooded; 3. the maximum velocity for a grass -lined ditch shall be 3.0 fps; 4. side slopes are to be no steeper than 3:1; and 5. the longitudinal, or running slope, shall not be less than 0.1 percent. (3) Privately maintained storm sewers, outfalls, culverts and drainage ditches shall conform to the following: a. Manholes. At a minimum, manholes shall be placed upstream of the outfall structure. b. Pipe. 1. Size. Storm sewer pipes designed to carry less than 5 cfs of flow shall have a minimum nominal diameter of 18 inches or equivalent cross section. ii. Storm sewer pipes designed to carry more than 5 cfs of flow shall have a minimum nominal diameter of 24 inches. 2. Material. If the storm sewer collection system is designed to connect to a City maintained structure, the pipe run making the connection shall be reinforced concrete pipe conforming to the latest revision of ASTM C-76, Class III. C. Ditches. 1. Ditches shall be designed to carry the 5-year event and maintain at least 6 inches of freeboard. 2. The designs shall be evaluated under the 100-year storm conditions to show that the on -site structures will not be flooded. 3. The maximum velocity for flow in the ditch shall be 3.0 fps. 22 4. Side slopes are to be no steeper than 3:1. (4) Outfalls. All outfall structures shall be designed to conform to the city standard details. (5) Extreme event conveyance. All drainage systems that outfall to a detention facility shall provide conveyance for the extreme event (100-year storm). If the storm sewer network is designed to carry less than the 100-year event, with the remaining Q carried by the roadway network, an extreme event conveyance structure shall be constructed. a. Types. 1. Extreme event overflow Swale. i. The required swale capacity shall be the difference between the 5-year design Q for the storm sewer outfall and the 100- year developed Q for the outfall; ii. The swale shall have a minimum of 6 inches of freeboard; iii. If the swale is grass -lined, it shall have a maximum velocity of 3.0 fps; and iv. If the swale is concrete -lined, it shall have a maximum velocity of 5.0 fps. 2. 100 year inlets. The required inlet capacity shall be the difference between the 5-year design Q for the storm sewer upstream of the inlets and the 100-year developed Q for the storm sewer upstream of the inlets. Sec. 109-104. Detention facilities. All detention facilities should be designed for easy maintenance. Consideration should be given to designing the facility for multipurpose uses. (1) Detention required. a. Detention shall be provided for all new development projects greater than one acre. 23 b. Detention requirements for property subdivided after January 1, 2021, shall be determined based upon the area of the property prior to the subdivision, unless a variance is granted pursuant to section 109-28. C. Hydrograph timing in lieu of detention shall not be approved. d. Detention shall be provided for all re -development projects on the basis of the increase in impervious area. e. Detention shall be provided at a rate of 0.65 acre-feet per acre of the development site unless discharging directly into the San Jacinto River, Burnet Bay, Scott Bay, Black Duck Bay, or Goose Lake. This minimum storage rate does not apply to a single-family residential structure and/or accessory buildings proposed on an existing lot. (2) Design requirements. a. An earthen detention basin shall have side slopes no steeper than 3:1 and a minimum bottom width of ten feet. b. A five-foot wide, six-inch thick reinforced concrete trickle channel shall be constructed through the basin bottom. C. The bottom of the detention basin shall have a minimum 0.2 percent cross slope to facilitate quick drainage. d. Inlets, outlets, and required trash racks shall be located for easy accessibility. e. The establishment of vegetative growth shall be accomplished by hydro - mulching the facility with Bermuda grass seed and watered per the supplier's instructions. The establishment of vegetative growth over 90 percent of the detention facility shall be a requirement for passing the final inspection. f. City maintained detention facilities shall have a dedicated maintenance driveway that conforms to City of Baytown standard details. g. Vertical wall detention ponds will require the approval of the director. h. Facilities located in nonresidential zones shall conform to the requirements of section 3.10 (c) of the Unified Land Development Code. The allowable detention credit for subsurface detention facilities shall be limited to the volume of clear space within the chambers, vaults, baffles, bladders or other structure designed to detain the stormwater runoff. 24 When designing the detention pond discharge, the designer shall follow the requirements of the Harris County Flood Control, Chambers County, TxDOT, City of Baytown or other entity responsible for maintaining the receiving body, channel, ditch, swale, pipe, or other structure. Proof of permission or no -objection will be required prior to the issuance of a City of Baytown permit. ARTICLE V. WATER DISTRIBUTION AND WASTEWATER COLLECTION SYSTEMS Sec. 109-126. Location. All water distribution and wastewater collection systems are to be located either in rights - of -way or in easements that satisfy the requirements of Article II of this chapter. Sec. 109-127. Water distribution and wastewater collection systems in the extraterritorial jurisdiction. Water distribution and wastewater collection systems in the extraterritorial jurisdiction shall be designed in accordance with the appropriate county standards and the state commission on environmental quality (TCEQ) requirements. Sec. 109-128. Certification of water distribution and wastewater collection systems. The developer may be required to submit a letter to the director from the department of health resources approving the water distribution and wastewater collection systems. Such a letter will serve as certification of the water distribution system. Sec. 109-129. Private water and sewer lines. Private water and sewer lines shall not cross property lines unless installed in a recorded easement. 25 Sec. 109-130. Wastewater collection systems. (a) Wastewater collection systems shall be designed, constructed and tested to satisfy the requirements of the Texas Administrative Code, Title 30, Chapter 217. (b) Wastewater collection systems shall be designed and constructed to conform to the current city standard details. (c) Manholes shall be spaced at a distance not to exceed 400 feet. (d) Lift station locations shall be designed to include an all-weather access road, three-phase electrical service, and potable water shall be provided. All structures located above ground shall be enclosed as specified by the director. (e) All wastewater collection systems shall be tested in accordance with the director's requirements. The entity responsible for the installation of the wastewater system will be responsible for all costs associated with the required testing. All testing results shall be submitted in writing to the director. (f) Service leads. (1) Nonresidential sewer leads shall connect to the system at manholes; however, no more than one service lead shall connect to a single manhole without the approval of the director. (2) Each service lead shall only serve a single tract of land or property. (3) Nonresidential sewer leads shall have a minimum diameter of 6 inches and a slope of no less than 0.50 percent. Sec. 109-131. Water distribution systems. (a) Water distribution systems shall be designed, constructed and tested to satisfy the requirements of the Texas Administrative Code, Title 30, Chapter 290. (b) Water distribution systems shall be designed and constructed to conform to the current city standard details. (c) The minimum size of lines within the public water distribution system is 6 inches. The maximum length of a single 6-inch line is 1,000 feet and must be fed by an 8-inch waterline or greater. (d) Water distribution lines serving dead-end and cul-de-sac streets shall be looped back to connect to itself at least 50 feet before the first mechanical bend creating the loop. 26 (e) No water distribution system lines shall be terminated, either temporarily or permanently, without a flushing or blow -off valve at the terminus of the line. (f) At intersections of water distribution lines, the number of valves shall be one less than the number of radiating lines. (g) Each service lead shall only serve a single tract of land or property. (h) Water meters shall be located within the public right-of-way. If it is infeasible to locate the water meter within the right-of-way, it may be placed within a recorded water meter easement with the approval of the director. Section 9: That Chapter 110 "Floods" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 110. FLOODS ARTICLE II. FLOOD DAMAGE PREVENTION DIVISION 1. GENERALLY Sec. 110-26. Definitions. Unless specifically defined in this section, words or phrases used in this article shall be interpreted to give them the meaning they have in common usage and to give this article its most reasonable application. The following words, terms and phrases, when used in this article, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning: Act means the statutes authorizing the National Flood Insurance Program that are incorporated in 42 U.S.C. 4001-4128. Agency means the Federal Emergency Management Agency. Alluvial fan flooding means flooding occurring on the surface of an alluvial fan or similar landform which originates at the apex and is characterized by high velocity flows; active processes of erosion, sediment transport and deposition; and unpredictable flow paths. Anchored means adequately secured to prevent flotation, collapse, or lateral movement. Apex means a point on an alluvial fan or similar landform below which the flow path of the major stream that formed the fan becomes unpredictable and alluvial fan flooding can occur. 27 Appeal means a request for review of the substantial damage estimation or substantial improvement determination by the director. Appurtenant structure means a structure which is on the same parcel of property as the principal structure to be insured and the use of which is incidental to the use of the principal structure. Area of special flood hazard (for purposes of these regulations, this term is synonymous with Special Flood Hazard Area or SFHA) means the land in the floodplain within a community subject to a one -percent or greater chance of flooding in any given year. The area may be designated as Zone A on the FHBM. After detailed ratemaking has been completed in preparation for publication of the flood insurance rate map, Zone A usually is refined into Zones A, AO, AH, Al-30, AE, A99, AR, AR/A/1-30, AR/AE, AR/AO, AR/AH, AR/A, VO, or V1-30, VE, or V. Base flood means the flood having a one -percent chance of being equaled or exceeded in any given year. Base flood depth (BFD) means the depth shown on the Flood Insurance Rate Map for zone AO that indicates the depth of water above highest adjacent grade resulting from a flood that has a one -percent chance of equaling or exceeding that level in any given year. Base flood elevation or BFE means the elevation shown on the Flood Insurance Rate Map (FIRM) and found in the accompanying Flood Insurance Study (FIS) for Zones A, AE, AH, A1- 30, AR, V1-V30, or VE that indicates the water surface elevation resulting from the flood that has a one -percent chance of equaling or exceeding that level in any given year — also called the Base Flood. Basement means any area of a building having its floor subgrade (below ground level) on all sides. Breakaway wall means a wall that is not part of the structural support of a building and is intended through its design and construction to collapse under specific lateral loading forces, without causing damage to the elevated portion of the building or supporting foundation system. City engineer means the assistant director of public works and engineering who is responsible for managing the activities of the development engineering group. Coastal high hazard area means an area of special flood hazard extending from offshore to the inland limit of a primary frontal dune along an open coast and any other area subject to high velocity wave action from storms or seismic sources. Community means a political entity that has the authority to adopt and enforce floodplain regulations for the area under its jurisdiction. Community rating system (CRS) is a voluntary incentive program within the National Flood Insurance Program that recognizes and encourages community floodplain management 28 activities that exceed the minimum program standards. Participation in the CRS allows the flood insurance premium rates to be discounted to reflect the reduced flood risk resulting from these floodplain management activities. Compensatory storage or floodplain mitigation means an artificially excavated, hydraulically equivalent volume of storage within the special or moderate flood hazard area used to balance the loss of natural flood storage capacity when artificial fill or structures are placed within the area of flood hazard. Contents coverage is the insurance on personal property within an enclosed structure, including the cost of debris removal, and the reasonable cost of removal of contents to minimize damage. Personal property may be household goods usual or incidental to residential occupancy, or merchandise, furniture, fixtures, machinery, equipment and supplies usual to other than residential occupancies. Critical feature means an integral and readily identifiable part of a flood protection system, without which the flood protection provided by the entire system would be compromised. Deductible means the fixed amount or percentage of any loss covered by insurance which is borne by the insured prior to the insurer's liability. Development means any manmade change in improved or unimproved real estate, including, but not limited to, buildings or other structures, mining, dredging, filling, grading, paving, excavation or drilling operations or storage of equipment or materials. Development permit means a permit obtained to improve a property or a structure within the city's jurisdiction. Director means the director of public works and engineering. Elevated building means a building that has no basement and that has its lowest elevated floor raised above ground level by foundation walls, shear walls, posts, piers, pilings, or columns. Emergency Flood Insurance Program or emergency program means the program as implemented on an emergency basis in accordance with section 1336 of the Act. It is intended as a program to provide a first -layer amount of insurance on all insurable structures before the effective date of the initial FIRM. Erosion means the process of the gradual wearing away of land masses. This peril is not per se covered under the National Flood Insurance Program. Existing construction or existing structures means for the purposes of determining rates, structures for which the start of construction commenced before the effective date of the FIRM or before January 1, 1975, for FIRMs effective before that date. 29 Existing manufactured home park or subdivision means a manufactured home park or subdivision for which the construction of facilities for servicing the lots on which the manufactured homes are to be affixed (including, at a minimum, the installation of utilities, the construction of streets, and either final site grading or the placement of concrete pads) is complete before the effective date of the floodplain management regulations adopted by a community. Expansion to an existing manufactured home park or subdivision means the preparation of additional sites by the construction of facilities for servicing the lots on which the manufactured homes are to be affixed (including the installation of utilities, the construction of streets, and either final site grading or the placement of concrete pads). Federal agency means any department, agency, corporation, or other entity or instrumentality of the executive branch of the Federal Government, and includes the Federal National Mortgage Association and the Federal Home Loan Mortgage Corporation. Federal Emergency Management Agency (FEMA) means an agency within the U.S. Department of Homeland Security charged with responding to presidentially -declared disasters and administering the National Flood Insurance Program. Financial assistance means any form of loan, grant, guaranty, insurance, payment, rebate, subsidy, disaster assistance loan or grant, or any other form of direct or indirect Federal assistance, other than general or special revenue sharing or formula grants made to states. Financial assistance for acquisition or construction purposes means any form of financial assistance which is intended, in whole or in part, for the acquisition, construction, reconstruction, repair, or improvement of any publicly or privately owned building or mobile home, and for any machinery, equipment, fixtures, and furnishings contained or to be contained therein, and shall include the purchase or subsidization of mortgages or mortgage loans but shall exclude assistance pursuant to the Disaster Relief Act of 1974 other than assistance under such Act in connection with a flood. It includes only financial assistance insurable under the Standard Flood Insurance Policy. First -layer coverage is the maximum amount of structural and contents insurance coverage available under the Emergency Program. Five -hundred (500) year floodplain elevation means the elevation of surface water resulting from a flood that has a 0.2-percent chance of equaling or exceeding that level in any given year. The 500-year floodplain elevation is shown on the flood insurance rate map for zones B and X (shaded). Flood or Flooding means: (a) a general and temporary condition of partial or complete inundation of normally dry land areas from: (1) The overflow of inland or tidal waters; 30 (2) The unusual and rapid accumulation or runoff of surface waters from any source; and (3) Mudslides which are proximately caused by flooding as defined in subsection (b) of this definition and are akin to a river of liquid and flowing mud on the surfaces of normally dry land areas, as when earth is carried by a current of water and deposited along the path of the current or (b) the collapse or subsidence of land along the shore of a lake or other body of water as a result of erosion or undermining caused by waves or currents of water exceeding anticipated cyclical levels or suddenly caused by an unusually high water level in a natural body of water, accompanied by a severe storm, or by an unanticipated force of nature, such as flash flood or an abnormal tidal surge, or by some similarly unusual and unforeseeable event which results in flooding as defined in subsection (a) of this definition. Flood elevation determination means a determination by the Federal Insurance Administrator of the water surface elevations of the base flood, that is, the flood level that has a one percent or greater chance of occurrence in any given year. Flood Hazard Boundary Map (FHBM) means an official map of a community, issued by the Federal Insurance Administrator, where the boundaries of the flood, mudslide related erosion areas having special hazards have been designated as zones A, M, and/or E. Flood insurance means the insurance coverage provided under the program. Flood insurance rate map or FIRM means an official map of a community on which the Federal Insurance Administrator has delineated both the special hazard areas and the risk premium zones applicable to the community. A FIRM that has been made available digitally is called a "Digital Flood Insurance Rate Map" (DFIRM). Flood insurance study or Flood elevation study means an examination, evaluation and determination of flood hazards and, if appropriate, corresponding water surface elevations, or an examination, evaluation and determination of mudslide and/or flood -related erosion hazards. Flood protection system means those physical structural works for which funds have been authorized, appropriated and expended and which have been constructed specifically to modify flooding in order to reduce the extent of the areas within a community subject to a special flood hazard and the extent of the depths of associated flooding. Such a system typically includes hurricane tidal barriers, dams, reservoirs, levees or dikes. These special flood -modifying works are those constructed in conformance with sound engineering standards. Floodplain, flood plain, or flood prone area means any land area susceptible to being inundated by floodwaters from any source. 31 Floodplain management means the operation of an overall program of corrective and preventive measures for reducing flood damage, including but not limited to emergency preparedness plans, flood control works and floodplain management regulations. Floodplain management regulations means zoning ordinances; subdivision regulations; building codes; health regulations; special purpose ordinances, such as a floodplain ordinance, grading ordinance and erosion control ordinance; and other applications of police power. The term describes such state or local regulations, in any combination thereof, which provide standards for the purpose of flood damage prevention and reduction. Floodway or regulatory floodway means the channel of a river or other watercourse and the adjacent land areas that must be reserved in order to discharge the base flood without cumulatively increasing the water surface elevation more than a designated height. Freeboard means a factor of safety usually expressed in feet above a flood level for purposes of floodplain management. Freeboard tends to compensate for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings, and the hydrological effect of urbanization of the watershed. Functionally dependent use means a use which cannot perform its intended purpose unless it is located or carried out in close proximity to water. The term includes only docking facilities, port facilities that are necessary for the loading and unloading of cargo or passengers and shipbuilding and ship repair facilities, but does not include long-term storage or related manufacturing facilities. Highest adjacent grade means the highest natural elevation of the ground surface prior to construction next to the proposed walls of a structure. Historic structure means any structure that is: (1) Listed individually in the National Register of Historic Places (a listing maintained by the Department of the Interior) or preliminarily determined by the Secretary of the Interior as meeting the requirements for individual listing on the National Register; or (2) Certified or preliminarily determined by the Secretary of the Interior as contributing to the historical significance of a registered historic district or a district preliminarily determined by the Secretary of the Interior to qualify as a registered historic district; or (3) Individually listed on a state inventory of historic places in states with historic preservation programs that have been approved by the Secretary of the Interior; or (4) Individually listed on a local inventory of historic places in communities with historic preservation programs that have been certified either: 32 a. By an approved state program as determined by the Secretary of the Interior; or b. Directly by the Secretary of the Interior in states without approved programs. Letter of map amendment (LOMA) is an official amendment, by letter, to an effective National Flood Insurance Program map. LOMAs are usually issued because a property has been inadvertently mapped as being in the floodplain, but is actually on natural high ground above the base flood elevation. Letter of map revision (LOMR) is FEMA's modification to an effective Flood Insurance Rate Map, or Flood Boundary and Floodway Map, or both. The LOMR officially revises the Flood Insurance Rate Map or Flood Boundary and Floodway Map, and sometimes the Flood Insurance Study report. LOMRs are generally based upon the implementation of physical measures that affect the hydrologic or hydraulic characteristics of a flooding source and thus result in the modification of the existing regulatory floodway, the effective Base Flood Elevations, or the Special Flood Hazard Area. Levee means a manmade structure, usually an earthen embankment, designed and constructed in accordance with sound engineering practices, to contain, control or divert the flow of water so as to provide protection from temporary flooding. Levee system means a flood protection system which consists of a levee and associated structures, such as closure and drainage devices, which are constructed and operated in accordance with sound engineering practices. Lowest floor means the lowest floor of the lowest enclosed area (including basement). An unfinished or flood -resistant enclosure, usable solely for parking of vehicles, building access or storage, in an area other than a basement area, is not considered a building's lowest floor, provided that such enclosure is not built so as to render the structure in violation of the applicable non - elevation design requirement of section 60.3 of the National Flood Insurance Program regulations. Manufactured (mobile) home means a structure, transportable in one or more sections, which is built on a permanent chassis and is designated for use with or without a permanent foundation when attached to the required utilities. "Manufactured (mobile) home" does not include a recreational vehicle. Manufactured home park or subdivision means a parcel (or contiguous parcels) of land divided into two or more manufactured home lots for rent or sale. Map means the Flood Hazard Boundary Map (FHBM) or the Flood Insurance Rate Map (FIRM) for a community issued by the Agency. Map revision means a change in the flood hazard boundary map or flood insurance rate map for a community, which reflects revised zone, base flood, or other information. 33 Mean sea level means for purposes of the National Flood Insurance Program, the National Geodetic Vertical Datum (NGVD) of 1929 or other datum, to which base flood elevations shown on a community's FILM are referenced. Moderate flood hazard areas are areas between the limits of the base flood and the 0.2- percent-annual-chance (or 500-year) flood. They are shown on flood maps as zones labeled with the letters B or X (shaded). National Flood Insurance Program (NFIP) means a program that makes federally -backed flood insurance available in those states and communities that agree to adopt and enforce floodplain management ordinances to reduce future flood damage. Natural grade means areas, or their elevations, in a state that is undisturbed by construction activities. New construction means for the purposes of determining insurance rates, structures for which the "start of construction" commenced on or after the effective date of an initial FIRM or after December 31, 1974, whichever is later, and includes any subsequent improvements to such structures. For floodplain management purposes, new construction means structures for which the start of construction commenced on or after the effective date of a floodplain management regulation adopted by a community and includes any subsequent improvements to such structures. New manufactured home park or subdivision means a manufactured home park or subdivision for which the construction of facilities for servicing the lots on which the manufactured homes are to be affixed (including, at a minimum, the installation of utilities, the construction of streets, and either final site grading or the placement of concrete pads) is completed on or after the effective date of the floodplain management regulations adopted by a community. Nonresidential building means a commercial or non-habitational building, or a mixed -use building that does not qualify as a residential building. This category includes, but is not limited to, small businesses, churches, schools, farm buildings (including grain bins, barns, and silos), garages, pool -houses, clubhouses, recreational buildings, mercantile buildings, agricultural and industrial buildings, warehouses, nursing homes, licensed bed -and -breakfasts, and hotels and motels with normal room rentals for less than six months. North American Vertical Datum (NAVD88) means the vertical control datum established for vertical control surveying in the United States of America based upon the General Adjustment of the North American Datum of 1988. Participating community, also known as an eligible community, means a community in which the Federal Insurance Administrator has authorized the sale of flood insurance. Policy means the Standard Flood Insurance Policy. 34 Ponding hazard means a flood hazard that occurs in flat areas when there are depressions in the ground that collect "ponds" of water. The ponding hazard is represented by the zone designation AH on the flood insurance rate map. Premium means the total premium payable by the insured for the coverage or coverages provided under the policy. The calculation of the premium may be based upon either chargeable rates or risk premium rates, or a combination of both. Principally above ground building means a building that has at least 51 percent of its actual cash value, less land value, above ground. Program means the National Flood Insurance Program (NFIP) authorized by 42 U.S.C. §4001 through §4128. Program deficiency means a defect in a community's floodplain management regulations or administrative procedures that impairs effective implementation of those floodplain management regulations or of the standards in 44 C.F.R. Part 60, Subpart A, §§ 60.3, 60.4, 60.5, or 60.6. Proper openings means enclosures (applicable to zones A, AI-A30, AE, AO, AH, AR, and AR Dual): All enclosures below the lowest elevated floor must be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. A minimum of two openings, with positioning on at least two walls, having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding must be provided. The bottom of all openings must be no higher than one foot above the higher of the exterior or interior grade (adjacent) or floor immediately below the openings. Recreational vehicle means a vehicle which is: (1) Built on a single chassis; (2) Four hundred square feet or less when measured at the largest horizontal projection; (3) Designed to be self-propelled or permanently towable by a light -duty truck; and (4) Designed primarily not for use as a permanent dwelling but as temporary living quarters for recreational, camping, travel or seasonal use. Reference feature is the receding edge of a bluff or eroding frontal dune, or if such a feature is not present, the normal high-water line or the seaward line of permanent vegetation if a high- water line cannot be identified. Regular program means the program authorized by the Act under which risk premium rates are required for the first half of available coverage (also known as first -layer coverage) for all new construction and substantial improvements started on or after the effective date of the FIRM, or after December 31, 1974, for FIRMS effective on or before that date. All buildings, the 35 construction of which started before the effective date of the FIRM, or before January 1, 1975, for FIRMS effective before that date, are eligible for first -layer coverage at either subsidized rates or risk premium rates, whichever are lower. Regardless of date of construction, risk premium rates are always required for the second -layer coverage, and such coverage is offered only after the Federal Insurance Administrator has completed a risk study for the community. Remedy a violation means to bring the structure or other development into compliance with State or local floodplain management regulations; or, if this is not possible to reduce the impacts of its noncompliance, ways that impacts may be reduced include protecting the structure or other affected development from flood damages, implementing the enforcement provisions of the ordinance or otherwise deterring future similar violations, or reducing Federal financial exposure with regard to the structure or other development. Repetitive loss structure means an NFIP-insured structure that has had at least two paid flood losses of more than $1,000 each in any 10-year period since 1978. Residential building means a non-commercial building designed for habitation by one or more families or a mixed -use building that qualifies as a single-family, 2-4 family, or other residential building. Risk premium rate means those rates established by the Federal Insurance Administrator pursuant to individual community studies and investigations which are undertaken to provide flood insurance in accordance with section 1307 of the Act and the accepted actuarial principles. Risk premium rates include provisions for operating costs and allowances. Riverine means relating to, formed by, or resembling a river (including tributaries), stream, brook, etc. Scientifically incorrect means the methodology(ies) and/or assumptions which have been utilized are inappropriate for the physical processes being evaluated or are otherwise erroneous. Second -layer coverage means an additional limit of coverage equal to the amounts made available under the Emergency Program, and made available under the Regular Program. Shear walls means walls used for structural support but not structurally joined or enclosed at the ends (except by breakaway walls). Shear walls are parallel, or nearly parallel, to the flow of the water and can be used in any flood zone. Sheet flow hazard means a type of flood hazard with flooding depths of one foot to three feet that occurs in areas of sloping land. The sheet flow hazard is represented by the zone designation AO on the FIRM. Solid (perimeter) foundation walls means walls that are used as a means of elevating a building in A zones and that must contain sufficient openings to allow for the unimpeded flow of floodwaters more than one foot deep. 36 Start of construction (for other than new construction or substantial improvements under the Coastal Barrier Resources Act (Pub. L. 97-348)), includes substantial improvement, and means the date the building permit was issued, provided the actual start of construction, repair, reconstruction, rehabilitation, addition placement, or other improvement was within 180 days of the permit date. The actual start means either the first placement of permanent construction of a structure on a site, such as the pouring of slab or footings, the installation of piles, the construction of columns, or any work beyond the station of excavation; or the placement of a manufactured home on a foundation. Permanent construction does not include land preparation, such as clearing, grading and filling; nor does it include the installation of streets and/or walkways; nor does it include excavation for a basement, footings, piers, or foundations or the erection of temporary forms; nor does it include the installation on the property of accessory buildings, such as garages or sheds not occupied as dwelling units or not part of the main structure. For a substantial improvement, the actual start of construction means the first alteration of any wall, ceiling, floor, or other structural part of a building, whether or not that alteration affects the external dimensions of the building. Structure or building means: (a) for floodplain management purposes, a walled and roofed building, including a gas or liquid storage tank, that is principally aboveground, as well as a manufactured home; and (b) for insurance purposes: (1) a building with two or more outside rigid walls and a fully secured roof that is affixed to a permanent site; (2) a manufactured home; or (3) a travel trailer without wheels, built on a chassis and affixed to a permanent foundation, that is regulated by the city's floodplain management and building ordinances, codes or laws. Substantial damage means damage of any origin sustained by a structure whereby the cost of restoring the structure to its before -damaged condition would equal or exceed 50 percent of the market value of the structure before the damage occurred. Substantial improvement means any reconstruction, rehabilitation, addition, or other improvement of a building, the cost of which equals or exceeds 50 percent of the market value of the building before the "start of construction" of the improvement. The term includes buildings that have incurred "substantial damage," regardless of the actual repair work performed. The term does not, however, include either: (a) any project for improvement of a building to correct existing violations of state or local health, sanitary, or safety code specifications which have been identified by 37 the local code enforcement official and which are the minimum necessary to assure safe living conditions; or (b) any alteration of a "historic building," provided that the alteration will not preclude the building's continued designation as a "historic building." Technically incorrect means the methodology(ies) utilized has been erroneously applied due to mathematical or measurement error, changed physical conditions, or insufficient quantity or quality of input data. Unfinished area means an enclosed area that is used only for the parking of vehicles, building access, or storage purposes and that does not meet the definition of a finished (habitable) area. Drywall used for fire protection is permitted in unfinished areas. Variance means a grant of relief by a community from the terms of a floodplain management regulation. Violation means the failure of a structure or other development to be fully compliant with the community's floodplain management regulations. A building or other development without the elevation certificate, other certifications, or other evidence of compliance required in 44 C.F.R. Part 60, Subpart A, §§ 60.3(b)(5), (c)(4), (c)(10), (d)(3), (e)(2), (e)(4), or (e)(5) is presumed to be in violation until such time as that documentation is provided. Water surface elevation means the height, in relation to the National Geodetic Vertical Datum (NGVD) of 1929 (or other datum, where specified) of floods or various magnitudes and frequencies in the flood plains of coastal or riverine areas. Sec. 110-27. Statutory authorization. The state legislature has in the Flood Control Insurance Act, V.T.C.A. Water Code § 16.315, delegated the responsibility of the local governmental units to adopt regulations designed to minimize flood losses. Therefore, the city council of the city does hereby ordain the regulations in this chapter. Sec. 110-28. Findings of fact. (a) The moderate and special flood hazard areas of the city are subject to periodic inundation which results in loss of life and property, health and safety hazards, disruption of commerce and governmental services and extraordinary public expenditures for flood protection and relief, all of which adversely affect the public health, safety and general welfare. (b) These flood losses are created by the cumulative effect of obstructions in floodplains, which cause an increase in flood heights and velocities, and by the occupancy of flood 38 hazard areas by uses vulnerable to floods and hazardous to other lands because they are inadequately elevated, floodproofed or otherwise protected from flood damage. Sec. 110-29. Statement of purpose. It is the purpose of this article to promote the public health, safety and general welfare and to minimize public and private losses due to flood conditions in specific areas by provisions designed to: (1) Protect human life and health; (2) Minimize expenditure of public money for costly flood control projects; (3) Minimize the need for rescue and relief efforts associated with flooding and generally undertaken at the expense of the general public; (4) Minimize prolonged business interruptions; (5) Minimize damage to public facilities and utilities such as water and gas mains, electric, telephone and sewer lines, streets and bridges located in floodplains; (6) Help maintain a stable tax base by providing for the sound use and development of flood prone areas in such a manner as to minimize future flood blight areas; and (7) Ensure that potential buyers are notified that property is in a flood area. Sec. 110-30. Methods of reducing flood losses. In order to accomplish its purposes, this chapter uses the following methods: (1) Restrict or prohibit uses that are dangerous to health, safety or property in the times of flood or that cause excessive increases in flood heights or velocities; (2) Require that uses vulnerable to floods, including facilities which serve such uses, be protected against flood damage at the time of initial construction; (3) Control the alteration of natural floodplains, stream channels and natural protective barriers, which are involved in the accommodation of floodwaters; (4) Control filling, grading, dredging and other development which may increase flood damage; and (5) Prevent or regulate the construction of flood barriers which will unnaturally divert floodwaters or which may increase flood hazards to other lands. 39 Sec. 110-31. Lands to which article applies. This article shall apply to all moderate and special flood hazard areas within the jurisdiction of the city. Sec. 110-32. Basis for establishing the moderate and special flood hazard areas. The moderate and special flood hazard areas as identified by FEMA in the scientific and engineering reports entitled, "The Flood Insurance Study for I iarris County, Texas" effective June 18, 2007, including any FEMA-issued preliminary maps, and "The Flood Insurance Study for Chambers County, Texas" dated May 4, 2015, with accompanying flood insurance rate maps and all subsequent amendments and/or revisions thereto are hereby adopted by reference and declared to be a part of this article. Such maps are available for review in the office of the floodplain administrator. Original copies of the official maps and all amendments thereto shall be maintained in the office of the floodplain administrator. In any dispute regarding the maps, the original map maintained at the office of the floodplain administrator shall control. Sec. 110-33. Compliance. No structure or land located within an area of moderate or special flood hazard shall be built, constructed, renovated, altered, cleared, filled, excavated or have its use changed without full compliance with the terms of this article and other applicable regulations. Violation of the provisions of this chapter by failure to comply with any of its requirements shall constitute a misdemeanor, punishable by penalties as provided in section 1-14. Nothing herein contained shall prevent the city from taking such other lawful action as is necessary to prevent or remedy any violation. Sec. 110-34. Abrogation and greater restrictions. This article is not intended to repeal, abrogate or impair any existing easements, covenants or deed restrictions. However, where the requirements of this article and another ordinance, easement, covenant or deed restriction conflict or overlap, whichever imposes the more stringent restrictions shall prevail. Sec. 110-35. Interpretation. In the interpretation and application of this article, all provisions shall be: (1) Considered as minimum requirements; 40 (2) Liberally construed in favor of the city council; and (3) Deemed neither to limit nor repeal any other powers granted under state statutes. Sec. 110-36. Warning and disclaimer of liability. The degree of flood protection required by this article is considered reasonable for regulatory purposes and is based on scientific and engineering considerations. On rare occasions, greater floods can and will occur and flood heights may be increased by manmade or natural causes. This article does not imply that land outside the moderate and special flood hazard areas or uses permitted within such areas will be free from flooding or flood damages. This article shall not create liability on the part of the city or any officer or employee thereof for any flood damages that result from reliance on this article or any administrative decision lawfully made under this article. DIVISION 2. ADMINISTRATION Sec. 110-66. Designation of floodplain administrator. The city engineer is appointed the floodplain administrator to administer and implement this article and other appropriate sections of 44 C.F.R. (National Flood Insurance Program regulations) pertaining to floodplain management. Sec. 110-67. Duties and responsibilities of floodplain administrator. Duties and responsibilities of the floodplain administrator under this article shall include, but not be limited to, the following: (1) Maintain and hold open for public inspection all records pertaining to this article; (2) Review the permit application to determine whether a proposed building site, including the placement of manufactured homes, will be reasonably safe from flooding; (3) Review, approve or deny all applications for development permits required by this article; (4) Review permits for proposed development to ensure that all necessary permits have been obtained from those federal, state or local governmental agencies, including section 404 of the Federal Water Pollution Control Act Amendments of 1972, 33 U.S.C. §1334, from which prior approval is required; 41 (5) Where interpretation is needed as to the exact location of the boundaries of the special flood hazard areas (for example, where there appears to be a conflict between a mapped boundary and actual field conditions), the floodplain administrator shall make the necessary interpretation; (6) Notify, in riverine situations, adjacent communities and the state department of water resources or any successor agency thereto prior to any alteration or relocation of a watercourse and submit evidence of such notification to the Federal Emergency Management Agency; (7) Assure that the flood -carrying capacity within the altered or relocated portion of any watercourse is maintained; (8) When base flood elevation data has not been provided in accordance with section 110-32, the floodplain administrator shall obtain, review and reasonably utilize any base flood elevation data and floodway data available from a federal, state or other source, in order to administer division 3 of this article; (9) When a regulatory floodway has not been designated, the floodplain administrator must require that no new construction, substantial improvements or other development, including fill, shall be permitted within zones Al-30 and AE on the community's FIRM, unless it is demonstrated that the cumulative effect of the proposed development, when combined with all other existing and anticipated development, will not increase the water surface elevation of the base flood more than one foot at any point within the community; (10) Under the provisions of 44 C.F.R. §65.12 of the National Flood Insurance Program (NFIP) regulations, a community may approve certain development in zones A 1- 30, AE, All on the community's FIRM which increases the water surface elevation of the base flood by more than one foot, provided the community first applies for a conditional FIRM revision through the Federal Emergency Management Agency; (11) Assist the Federal Insurance Administrator, upon request, in the delineation of the limits of the areas having special flood, mudslide or flood -related erosion hazards; (12) Provide, upon request, information concerning present uses and occupancy of the floodplain, mudslide or flood -related erosion areas to the Federal Insurance Administrator; and (13) Provide written notification to FEMA, upon occurrence, whenever the boundaries of the city have been modified by annexation or the city has otherwise assumed or no longer has authority to adopt and enforce floodplain management regulations for a particular area. This notification shall include a reproduceable map that clearly delineates the new corporate limits or new area for which the city has assumed or relinquished floodplain management regulatory authority. 42 Sec. 110-68. Floodplain development permit required. A floodplain development permit shall be required for all proposed development, re- development, or substantial improvement within special or moderate flood hazard areas to ensure conformance with this article. Sec. 110-69. Floodplain development permit procedures. (a) Application for a floodplain development permit required in section 110-68 shall be presented to the floodplain administrator on forms furnished by the floodplain administrator and may include, but not be limited to, plans, drawn to scale, showing the location, dimensions and elevation of proposed landscape alterations; existing and proposed structures, including the placement of manufactured homes; and the location of such in relation to the moderate and special flood hazard areas. Additionally, the following information and submittals are required: (1) A site plan that shows: a. A graphic and stated scale and north arrow; b. The parcel boundaries and the location and names of adjacent streets; C. All watercourses on or adjacent to the parcel; d. All floodplain, V-zone, Coastal A -zone, and floodway boundaries that run through the parcel; e. All required buffer or setback lines from shorelines or channel banks; f. All drainage and utility easements; g. All areas to be cleared, cut, graded, or filled; h. The location of all existing and proposed fences, walls, and other structures; The footprint of all existing and proposed buildings and building additions; j. The elevation of the lowest floor of the building (or addition) and of an attached garage, including the elevation of the interior grade or floor of a crawlspace; k. The location and elevation of all mechanical and utility equipment servicing the building; and 43 For buildings with solid foundation walls and buildings with enclosures below the base flood elevation, the total area of each enclosed area (in square feet) measured on the outside, the location and specifications of all flood openings, and either the total net open area (in square inches) of flood openings below the base flood elevation, accounting for screens, louvers, faceplates, and grilles. (2) The elevation, in relation to mean sea level, of the lowest floor, including basement, and components of the mechanical, electrical, plumbing and other service facilities systems of all new and substantially improved structures; (3) The elevation, in relation to mean sea level, to which any nonresidential structure shall be floodproofed; (4) The certifications required in section 110-102(7); and (5) A description of the extent to which any watercourse or natural drainage will be altered or relocated as a result of the proposed development. (b) Approval or denial of a floodplain development permit by the floodplain administrator shall be based on all of the sections of this article and the following relevant factors: (1) The danger to life and property due to flooding or erosion damage; (2) The susceptibility of the proposed facility and its contents to flood damage and the effect of such damage on the individual owner; (3) The danger that materials may be swept onto other lands to the injury of others; (4) The compatibility of the proposed use with existing and anticipated development; (5) The safety of access to the property in times of flood for ordinary and emergency vehicles; (6) The costs of providing governmental services during and after flood conditions, including maintenance and repair of streets, bridges and public utilities and facilities such as sewer, gas, electrical and water systems; (7) The expected heights, velocity, duration, rate of rise and sediment transport of the floodwaters and the effects of wave action, if applicable, expected at the site; (8) The necessity to the facility of a waterfront location, where applicable; (9) The availability of alternative locations, not subject to flooding or erosion damage, for the proposed use; and 44 (10) The relationship of the proposed use to the comprehensive plan and the Unified Land Development Code for that area. Sec.110-70. Variances. (a) The city council shall hear and render judgment on requests for variances from the requirements of this article. (b) The floodplain administrator shall maintain a record of all variance actions, including justification for their issuance and will report such variances issued in the annual or biennial report submitted to the Federal Insurance Administrator. (c) Variances may be issued for the reconstruction, rehabilitation or restoration of structures listed on the National Register of Historic Places or the state inventory of historic places, without regard to the procedures set forth in the remainder of this article. (d) Variances may be issued for new construction and substantial improvements to be erected on a lot of one-half acre or less in size contiguous to and surrounded by lots with existing structures constructed below the base flood level, providing the relevant factors in subsection 110-69(b) have been fully considered. As the lot size increases beyond one-half acre, the technical justification required for issuing the variance increases. (e) Upon consideration of the factors noted in this subsection and the intent of this article, the city council may attach such conditions to the granting of variances as it deems necessary to further the purpose and objectives of this article as stated in section 110-29. (f) Variances shall not be issued within any designated floodway if any increase in flood levels during the base flood discharge would result. (g) Variances may be issued for the repair or rehabilitation of historic structures upon a determination that the proposed repair or rehabilitation will not preclude the structure's continued designation as a historic structure and the variance is the minimum necessary to preserve the historic character and design of the structure. (h) Prerequisites for granting variances shall be as follows: (1) Variances shall only be issued after a written a written request therefor and upon a determination that the variance is the minimum necessary, considering the flood hazard, to afford relief. (2) Variances shall only be issued upon: a. A showing of good and sufficient cause; 45 b. A determination that failure to grant the variance would result in exceptional hardship to the applicant; and C. A determination that the granting of a variance will not result in increased flood heights, additional threats to public safety, extraordinary public expense, create nuisances, cause fraud on or victimization of the public or conflict with existing local laws or ordinances. (3) Any applicant who applies for a variance from this article shall be given written notice that the issuance of a variance to construct a structure below the base flood level will result in increased premium rates for flood insurance up to amounts as high as $25 for $100 of insurance coverage and such construction below the base flood level increases risks to life and property. (i) Variances may be issued by the city for new construction, for substantial improvements and for other development necessary for the conduct of a functionally dependent use provided that: (1) The criteria outlined in this subsection are met; and (2) The structure or other development is protected by methods that minimize flood damages during the base flood and create no additional threats to public safety. See. 110-71. Substantial damage/improvement. (a) Determinations. (1) The floodplain administrator shall make all determinations regarding substantial damage to a structure within the special flood hazard areas. Should the structure be determined to be substantially damaged, that structure shall be required to meet all of the current pertinent requirements of this chapter. The market value of the structure shall be the value determined by the central appraisal district of the appropriate county. b. The estimated amount of damage shall be calculated by dividing the estimated cost to repair the structure to its pre -damaged condition by the market value of the structure. C. If a structure was determined to be damaged less than 50 percent of its pre - damage market value but the actual value of the repairs exceed 50 percent of the pre -damage market value, the structure will fall under the category of substantially improved and will be required to meet all of the current pertinent requirements of this chapter. 46 (2) The floodplain administrator shall make all determinations regarding substantial improvement to a structure within the special flood hazard areas. Should the proposed improvements be determined to be a substantial improvement, the existing structure and the proposed improvements to the structure shall be required to come into conformance and or meet the current pertinent requirements of this chapter. a. The market value of the structure shall be the value determined by the central appraisal district of the appropriate county. b. The estimated percentage of improvement shall be calculated by dividing the estimated cost of the improvement by the value of the structure prior to improvement. (b) Appeals. (1) An applicant for a floodplain development permit may appeal the determination of substantial damage and/or substantial improvement. (2) A determination appeal may be based upon the following: a. The determination was made without sufficient information; b. There was a mathematical or technical error made in the determination; C. The estimate of repair costs was incorrect; d. The estimated value of improvements was incorrect; or e. The estimated market value of the structure was incorrect. (3) The applicant shall apply for the appeal using a form to be provided by the floodplain administrator. (4) The appellant applicant shall submit documentation supporting the claim for appeal. The documentation may include: a. Any information that was lacking or missing during the initial determination; b. Proof of a mathematical or technical error in the determination; C. Actual repair or construction estimates from established contractors that are permitted to perform work in the city; d. If the basis of the appeal is the market value of the structure, the appellant shall provide an appraisal report that is signed or endorsed by an actively 47 licensed residential appraiser, certified residential appraiser, or a certified general appraiser who is in good standing with the state appraiser licensing and certification board. (5) The floodplain administrator will review the appeal application and the supporting documentation to determine if an error had been made. (6) The floodplain administrator shall keep and hold open for review all documentation relating to substantial damage and substantial improvement appeals. See.110-72. Post -disaster declaration building code, floodplain management administration and enforcement duties. The following are duties that may be carried out within a special flood hazard area as part of a post -disaster recovery effort. (a) Building code administration. (1) Review and process applications for building permits; certificates of occupancy; certificates of compliance; and the associated plans, specifications, and construction documents for compliance with federal, state and municipal building, housing and life -safety codes and standards applicable to disaster -related repair, replacement or retrofit. (2) Process requests for building code variances. (3) Collect fees. (4) Hire, train, supervise, certify and license staff, as required to conduct these activities. (5) Contract for services (e.g., contract planning, initiation, solicitation, evaluation and award). (6) Provide training and information to staff, contractors and the public on unique considerations for repair of disaster -damaged historic buildings. (7) Provide training and outreach to the public on building code and building permit requirements applicable to the repair, replacement or retrofit of disaster -damaged buildings. (8) Establish construction plan review and inspection processes, procedures and instructions for permit holders. (9) Monitor impacted areas for unpermitted construction activities. 48 (10) Coordinate building code administration and enforcement with floodplain management ordinance administration and enforcement, as appropriate. (b) Code enforcement. (1) Inspect structures under construction for compliance with approved plans, specifications and all requirements of applicable codes, laws and ordinances. (2) Identify and carry out corrective action in cases where construction, design and occupancy do not comply with codes and/or ordinances. (3) Conduct and process condemnation determinations. (4) Review and issue elevation certificates. (5) Investigate complaints and assist in preparation of materials for abating violations of building codes and related ordinances. (c) Floodplain management ordinance administration and enforcement. (1) Enforce or administer standards for development according to community floodplain management regulations. (2) Determine whether proposed disaster -related development activities are in areas regulated by the community's floodplain management ordinance or building code. (3) Hire, train, supervise, certify and license staff, as required, to conduct these activities. (4) Contractor for services (e.g., contract planning, initiation, solicitation, evaluation and award). (5) Provide training and outreach to the public on floodplain permit requirements applicable to the repair, replacement or retrofit of disaster - damaged buildings. (6) Provide training and information to staff, contractors and the public on unique considerations for repair of disaster -damaged historic buildings. (7) Review disaster —related development proposals to ensure compliance with the requirements of applicable floodplain management ordinances. (8) Process permits for disaster -related development in the floodplain associated with the declared disaster. 49 (9) Inspect all disaster -related development in the applicable jurisdiction. (10) Monitor impacted areas for unpermitted construction activities. (11) Process requests for floodplain management ordinance variances. (12) Process, maintain and track temporary occupancy permits and inspect temporary occupancy buildings. (13) Provide information on flood hazards, floodplain map data, advisory flood data and compliance to residents and property owners. (14) Conduct inspections to ensure the removal of temporary fill and related materials used in flood fighting. (15) Take corrective action necessary to ensure compliance with Federal, State and Local floodplain regulations. (16) Coordinate floodplain management ordinance administration and enforcement with building code administration and enforcement, as appropriate. (d) Substantial damage determinations. (1) Conduct initial field surveys to determine extent of damage. (2) Establish damage trends to identify areas to focus building -specific assessment efforts. (3) Prepare cost information on repairs and pre -disaster market value estimates for substantial damage estimates. (4) Hire, train, supervise, certify and license staff, as required, to conduct these activities. (5) Collect field data for damage assessments. (6) Enter damage inventory administrative data into the Substantial Damage Estimator. (7) Track cumulative substantial damage and repetitive loss for communities, if required. (8) Conduct damage inventory of structures. (9) Inform property owners of damage determination and provide compliance requirements. 50 (10) Perform inspections to ensure compliance with repair and substantial damage construction requirements. (11) Determine whether proposed improvements are "substantial improvements" and trigger requirements for compliance, including a building permit. (12) Determine if damaged structures have been designated as historic or that may be eligible for such designation. (13) Review, adjudicate and resolve Substantial Damage Determination appeals. DIVISION 3. FLOOD HAZARD REDUCTION See. 110-101. General standards. In all moderate and special flood hazard areas, the following are required: (1) All new construction and substantial improvements shall be designed or modified and adequately anchored to prevent flotation, collapse or lateral movement of the structure resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy; (2) All new construction or substantial improvements shall be constructed by methods and practices that minimize flood damage; (3) All new construction or substantial improvements shall be constructed with materials resistant to flood damage; (4) All new construction or substantial improvements shall be constructed without a net gain in the volume of fill material used to elevate the improvement; (5) All new or substantial improvements shall be constructed with mechanical, electrical, plumbing and other service facilities that are designed or located so as to prevent water from entering or accumulating within the components during conditions of flooding; (6) All new and replacement water supply systems shall be designed to minimize or eliminate infiltration of floodwaters into the system; (7) New and replacement sanitary sewer systems shall be designed to minimize or eliminate infiltration of floodwaters into the systems and discharge from the systems into floodwaters; (8) On -site waste disposal systems shall be located to avoid impairment to them or contamination from them during flooding; and 5L (9) Proof from the applicant that all necessary state and federal permits have been obtained prior to permit issuance. Sec. 110-102. Specific standards. The design and construction of projects located within an area of special or moderate flood hazard shall, at a minimum, meet the following requirements: (1) Residential construction. New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, and all components of the mechanical, electrical, and plumbing systems and any other service facility elevated to at least the 500-year floodplain elevation or 24 inches above the base flood elevation, whichever is higher. Additionally, plumbing systems shall be designed and/or located so as to prevent floodwaters from entering or damaging them. Slab on grade construction shall not be permitted for the new construction of residential dwellings. (2) Nonresidential construction. New construction and substantial improvements of any commercial, industrial, or other nonresidential structure shall either have the lowest floor, including basement, and all components of the electrical and mechanical systems and any other service facility elevated to at least the 500-year floodplain elevation or 24 inches above the base flood elevation, whichever is higher, with plumbing systems designed and/or located so as to prevent floodwaters from entering or damaging them or, together with attendant utility and sanitary facilities, be designed so that below the 500-year floodplain elevation or 24 inches above the base flood level, whichever is higher, the structure is watertight, with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads and effects of buoyancy. (3) Enclosures. New construction and substantial improvements with fully enclosed areas below the lowest floor that are usable solely for parking of vehicles, building access or storage in an area other than a basement and which are subject to flooding shall be designed to automatically equalize hydrostatic flood forces on exterior walls by allowing for the entry and exit of floodwaters. Designs for meeting this requirement must be certified by a registered professional engineer to meet or exceed the following minimum criteria: a. A minimum of two openings having a total net area of not less than one square inch for every square foot of enclosed area subject to flooding shall be provided; b. The bottom of all openings shall be no higher than one foot above grade; and 52 C. Openings may be equipped with screens, louvers, valves or other coverings or devices, provided that they permit the automatic entry and exit of floodwaters. (4) Manufactured homes. All manufactured homes placed or substantially improved within a moderate or special flood hazard area on the community's FIRM must be elevated on a permanent foundation so that the lowest horizontal structural member of the manufactured home as well as all components of the mechanical, electrical, and plumbing systems and any other service facility are elevated to at least the 500- year floodplain elevation or 24 inches above the base flood elevation, whichever is higher. Plumbing systems shall be designed and/or located so as to prevent floodwaters from entering or damaging them. For the purposes of this subsection, manufactured homes must be elevated and anchored to resist flotation, collapse and lateral movement. Methods of anchoring may include, but are not limited to, use of over -the -top or frame ties to ground anchors. This requirement is in addition to applicable state and local anchoring requirements for resisting wind forces. (5) Recreational vehicles. Recreational vehicles placed on sites within a moderate or special flood hazard area on the community's FIRM shall either: a. Be on the site for fewer than 180 consecutive days; b. Be frilly licensed and ready for highway use; C. Be elevated on a permanent foundation so that the chassis is elevated to or above the base flood elevation and be securely anchored to an adequately anchored foundation system to resist floatation collapse and lateral movements. A recreational vehicle is ready for highway use if it is on its wheels or jacking system, if it is attached to the site only by quick -disconnect type utilities and security devices and if it has no permanently attached additions. (6) Appurtenant structures. Appurtenant structures may be constructed with lowest floor elevations below the base flood elevation if all of the following applicable requirements are met: a. It must be anchored to resist flotation, collapse and lateral movement; b. The structure must be water tight to at least the 500-year floodplain elevation or 24 inches above the base flood elevation, whichever is higher; C. It must be designed to allow for the automatic entry of floodwaters; 53 d. Mechanical and utility equipment must be elevated or floodproofed to at least the 500-year floodplain elevation or 24 inches above the BFE, whichever is higher; e. It must comply with the floodway encroachment provisions of the NFIP Regulations; and f. Its use must be limited to building access, parking and./or limited storage. (7) Compensatory storage or floodplain mitigation required. If a development, re- development, or substantial improvement project proposes encroach upon, by placing fill, store stormwater detention, or placing a structure within a moderate or special flood hazard area, the project must provide compensatory storage. a. Compensatory storage for special flood hazard area encroachments shall be provided in the same type of special flood hazard area. b. Compensatory storage for moderate flood hazard area encroachments may be provided in either special or moderate flood hazard areas. C. The volume of an encroachment shall be calculated as the volume of space occupied by the encroachment from natural ground up to the base flood elevation or the 500-year floodplain, whichever is higher. d. If the compensatory storage is provided on the same property as the proposed development, the required compensatory storage shall be equivalent to the volume of encroachment. e. If it is infeasible to provide compensatory storage on the same property as the proposed development, the applicant may request to provide the compensatory storage offsite, provided that: 1. the compensatory storage rate is doubled; 2. the applicant provides proof that the offsite compensatory storage cannot be reduced in any way; and 3. the location of the offsite compensatory storage is within a one-half mile radius of the proposed development's continuous property boundary. f. the lower elevation limit for compensatory storage is two feet above the local water table elevation. (8) Certification. A professional engineer, registered in the state of Texas, shall certify that requirements 1-6 of this section, as applicable to the development, have been 54 met or exceeded and that the designs and methods of construction are in accordance with accepted standards of practice. This certification shall be kept on file at the office of the floodplain administrator. (9) Elevation certificate required. Elevation certificates shall be kept on file at the office of the floodplain administrator. a. The project owner, developer, or applicant shall submit an initial elevation certificate for the natural grade of the project site prior to the start of construction. This elevation certificate shall not be aged more than 180 days at the time of submission. b. The project owner, developer, or applicant shall submit an under - construction elevation certificate for the top of form for the lowest finished floor for residential, nonresidential, and appurtenant structures; structure that provides support for the lowest horizontal structural member for a manufactured home; and/or the permanent foundation for a recreational vehicle. C. The project owner, developer, or applicant shall submit a final elevation certificate for the finished floor elevation of the lowest floor for residential, nonresidential, and appurtenant structures, the lowest horizontal structural member for a manufactured home, and/or the top of the permanent foundation for a recreational vehicle. d. These required elevation certificates shall: be sealed by a professional engineer or professional surveyor registered in the state; 2. provide reference to a permanent benchmark; 3. either be referenced to NGVD88 (2001) or include a conversion factor to NGVD88 (2001); and 4. be referenced to the base flood elevation for the project site. (10) Severe repetitive loss structures. Structures on repetitive loss properties shall not be improved unless such improvements will bring the structure into full compliance with this article. Sec. 110-103. Standards for subdivision proposals. (a) All subdivision proposals, including the placement of manufactured home parks and subdivisions, shall be consistent with sections 110-29 through 110-30. 55 (b) All proposals for the development of subdivisions, including the placement of manufactured home parks and subdivisions, shall meet the floodplain development permit requirements of sections 110-68, 110-69, and 110-103. (c) Base flood and 500-year floodplain elevation (if applicable) data shall be generated for subdivision proposals and other proposed developments of more than 50 lots or larger than five acres, including manufactured home parks and subdivisions, if not otherwise provided pursuant to section 110-32 or subsection 110-67(8). (d) All subdivision proposals, including manufactured home parks and subdivisions, shall have adequate drainage to reduce exposure to flood hazards. (e) All subdivision proposals, including manufactured home parks and subdivisions, shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize or eliminate flood damage. Sec. 110-104. Standards for areas of shallow flooding (AO/AH zones). Located within the areas of special flood hazard established in section 110-32 are areas designated as shallow flooding. These areas have special flood hazards associated with base flood depths of one to three feet where a clearly defined channel does not exist and where the path of flooding is unpredictable and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow; therefore, the following shall apply: (1) Residential structures. All new construction and substantial improvements of residential structures shall have the lowest floor, including basement, and all components of the electrical and mechanical systems or any other service facility elevated above the highest adjacent grade at least one foot higher than the depth number specified in feet on the community's FIRM (at least two feet if no depth number is specified). Additionally, plumbing systems shall be designed and'or located so as to prevent floodwaters from entering or damaging them. (2) Nonresidential structures. All new construction and substantial improvements shall: a. Have the lowest floor, including basement, and all components of the electrical and mechanical systems or any other service facility elevated above the highest adjacent grade at least one foot higher than the depth number specified in feet on the community's FIRM (at least two feet if no depth number is specified); or b. Together with attendant utility and sanitary facilities, be designed so that below the base flood level, the structure is watertight with walls substantially impermeable to the passage of water and with structural components having the capability of resisting hydrostatic and hydrodynamic loads or effects of buoyancy. Additionally, plumbing systems shall be designed and/or located so as to prevent floodwaters from entering or damaging them. 56 (3) A registered professional engineer shall submit a certification to the floodplain administrator that the standards of this section, as proposed in subsection 110-69, have been satisfied. (4) Drainage paths around structures on slopes to guide water away from those structures shall be required. Sec. 110-105. Standards for regulatory floodways. Located within areas of special flood hazard established in section 110-32 are areas designated as regulatory floodways. Since the regulatory floodway is an extremely hazardous area due to the velocity of floodwaters which carry debris, potential projectiles and erosion potential, the following shall apply: (1) Encroachments are prohibited, including fill, new construction, substantial improvements and other development within the adopted regulatory floodway, unless it has been demonstrated through hydrologic and hydraulic analysis performed in accordance with standard engineering practice that the proposed encroachments shall not result in any increase in flood levels within the community during the occurrence of the base flood discharge. (2) If subsection (1) of this section is satisfied, all new construction and substantial improvements shall comply with all applicable flood hazard reduction provisions of this chapter. (3) Under the provisions of 44 C.F.R. §65.12 of the National Flood Insurance Program regulations, the city may permit encroachments within the adopted regulatory floodway that would result in an increase in base flood elevations, provided the city first applies for a conditional FIRM and floodway revision through FEMA. Sec. 110-106. Standards for coastal high hazard areas. Located within the special flood hazard areas established in section 110-32 are areas designated as coastal high hazard areas (zone V 1-30, VE and/or V). These areas have special flood hazards associated with high velocity waters from tidal surges and hurricane wave wash; therefore, the design and construction of projects located within an area of coastal high hazard shall, at a minimum, meet the following requirements: (1) All new construction shall be located landward of the reach of mean high tide; (2) All new construction, substantial improvements shall be elevated on pilings and columns so that: 57 a. The bottom of the lowest horizontal structural member of the lowest floor, excluding the pilings or columns, is elevated 24 inches above the base flood level; b. The pile or column foundation and structure attached thereto is anchored to resist flotation, collapse and lateral movement due to the effects of wind and water loads acting simultaneously on all building components. Water loading values used shall be those required by applicable state or local building standards; and C. A registered professional engineer shall develop or review the structural design, specifications and plans for the construction. (3) Provide that all new construction and substantial improvements have the space below the lowest floor either free of obstruction or constructed with non -supporting open wood latticework or insect screening intended to collapse under wind and water loads without causing collapse, displacement or other structural damage to the elevated portion of the building or supporting foundation system. Breakaway walls are prohibited within coastal high hazard areas. (4) The use of fill for structural support of buildings is prohibited; (5) Manmade alteration of sand dunes and mangrove stands which increase potential flood damage is prohibited; (6) All manufactured homes placed or substantially improved shall meet the standards of subsections (a) through (e) of this section and subsection 110-102(4). (7) All recreational vehicles must: a. Be on the site for fewer than 180 consecutive days; b. Be fully licensed and ready for highway use; or C. Be elevated on a permanent foundation such that the chassis is elevated to or above the base flood elevation and be securely anchored to an adequately anchored foundation system to resist floatation collapse and lateral movements. A recreational vehicle is ready for highway use if it is on its wheels or a jacking system, if it is attached to the site only by quick disconnect -type utilities and security devices, and if it has no permanently attached additions. (8) Appurtenant structures shall meet the standards of subsection (b) of this section. (9) Solid (perimeter) foundation walls shall not be used to elevate structures. 58 (10) Certification, A professional engineer, registered in the state, shall certify that requirements (1)-(9) of this section, as applicable to the development, have been met or exceeded and that the designs and methods of construction are in accordance with accepted standards of practice. This certification shall be kept on file at the office of the floodplain administrator. (11) Elevation certificate required. Elevation certificates shall be kept on file at the office of the floodplain administrator. a. The project owner, developer, or applicant shall submit an initial elevation certificate for the natural grade of the project site prior to the start of construction. This elevation certificate shall not be aged more than 180 days at the time of submission. b. The project owner, developer, or applicant shall submit an under - construction elevation certificate for the top of form for the lowest finished floor for residential, nonresidential, and appurtenant structures; structure that provides support for the lowest horizontal structural member for a manufactured home; and/or the permanent foundation for a recreational vehicle. C. The project owner, developer, or applicant shall submit a final elevation certificate for the finished floor elevation of the lowest floor for residential, nonresidential, and appurtenant structures, the lowest horizontal structural member for a manufactured home, and/or the top of the permanent foundation for a recreational vehicle. d. These required elevation certificates shall: 1. be sealed by a professional engineer or professional surveyor registered in the state; 2. provide reference to a permanent benchmark; 3. either be referenced to NGVD88 (2001) or include a conversion factor to NGVD88 (2001); and 4. be referenced to the base flood elevation for the project site. (12) Repetitive loss structures. Structures on repetitive loss properties shall not be improved unless such improvements will bring the structure into full compliance with this chapter. See. 110-107. Coastal AE zone. Located within the special flood hazard area established in section 110-32 are areas within the AE flood zone designated for limited to moderate wave action. These areas have special flood 59 hazards associated with high velocity waters from tidal surges and hurricane wave wash; therefore, all development must meet the criteria set forth in sections 110-106 and 110-102. Section 10: That Chapter 114 "Sewer and Water Line Extensions," Article III "Developments," Section 114-66 "Application," Subsection (a) of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: Chapter 114. SEWER AND WATER LINE EXTENSIONS ARTICLE III. DEVELOPMENTS Sec. 114-66. Application. (a) Subdivisions. Any owner or developer desiring to develop land as a subdivision and to install water or sewer lines shall submit his plans and specifications for approval in accordance with the city's subdivision regulations in chapter 126 and engineering and construction standards in chapter 109. Construction of such lines shall not commence until the plans and specifications have been approved by the city engineer; the preliminary plat has been approved by the planning and zoning commission; and a permit issued authorizing such construction. Section 11: That Chapter 114 "Sewer and Water Line Extensions," Article IV "Impact Fees," Section 114-103 "Determination of service units" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: Chapter 114. SEWER AND WATER LINE EXTENSIONS ARTICLE IV. IMPACT FEES Sec. 114-103. Determination of service units. The number of service units attributable to a new development shall be determined by using the following equivalent dwelling unit table established by the city council, which may be amended from time to time: Meter Type DwellingEquivalent Meter Size Continuous Duty Maximum Rate (gpm) Ratio to 5/81' Meter Simple 5/8 " x W 10 1 Simple '/ it 15 1.5 Simple 1" 25 2.5 Simple 1'/z" 50 5 Simple 2" 80 8 60 Equivaleiit Meter Type Dwelling Units for Various1 Meter Size Continuous Duty Maximum Rate (gpm) Ratio to 5/81' Meter Compound 2" 80 8 Turbine 2" 100 8 Compound 3" 160 16 Turbine 3" 240 24 Compound 4" 250 25 Turbine 4" 420 42 Compound 6" 500 50 Turbine 6" 920 92 Compound 8" 800 80 Turbine 8" 1600 160 Compound 10" 1150 115 Turbine 10" 2500 250 Turbine 12" 3300 330 Section 12: That Chapter 122 "Streets and Sidewalks," Article I "In General," Section 122-3 "Obstruction of view; visibility triangle," Subsection (a) of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 122. STREETS AND SIDEWALKS ARTICLE I. IN GENERAL Sec. 122-3. Obstruction of view; visibility triangle. (a) An owner or occupant of any premises shall not intentionally or knowingly build, construct, place, keep, allow, permit or maintain any object, structure, building, tree, plant, vegetation or fence so as to obstruct or interfere with the view of a driver of a motor vehicle at the point of approaching, merging, emerging or intersecting traffic from any street or driveway with another street or so as to prevent any traveler on any street or driveway from obtaining a clear view of approaching vehicles within a sight triangle as described in section 109- 76.4 of this code. Section 13: That Chapter 122 "Streets and Sidewalks," Article II "Construction of Sidewalks, Driveways and Curb and Gutters," Division 1 "Generally," Section 122-31 "Curb cuts; concrete driveways required where city installed curb and gutters" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: 61 CHAPTER 122. STREETS AND SIDEWALKS ARTICLE II. CONSTRUCTION OF SIDEWALKS, DRIVEWAYS AND CURB AND GUTTERS DIVISION 1. GENERALLY Sec. 122-31. Curb cuts; concrete driveways required where city installed curb and gutters. It is the duty of every person owning property abutting on city streets where curbs and gutters have been installed to construct or cause to be constructed, at his own cost and expense, concrete driveways leading from the curb line to the property line on such lots, as may be necessary to enter with any vehicle from the street, per the city's driveway standards as described in article III of chapter 109 of this code. In doing such work property owners shall have the right to cut down the curb wall, only after receiving a driveway permit from the director. Section 14: That Chapter 122 "Streets and Sidewalks," Article II "Construction of Sidewalks, Driveways and Curb and Gutters," Division 2 "License," Section 122-63 "Permit required for each job" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 122. STREETS AND SIDEWALKS ARTICLE II. CONSTRUCTION OF SIDEWALKS, DRIVEWAYS AND CURB AND GUTTERS DIVISION 2. LICENSE Sec. 122-63. Permit required for each job. Under this division, after the license is issued, the licensee shall, before doing each individual piece of work contracted for, obtain a permit from the director for each separate piece of work contracted to be done, together with plans, specifications, grades and lines for such work. All such work shall be done according to the approved plans and specifications and shall at all times be subject to the inspection and approval of the director for such work. Section 15: That Chapter 122 "Streets and Sidewalks," Article II "Construction of Sidewalks, Driveways and Curb and Gutters," Division 3 "Specifications and Other Regulations," Section 122-91 "Concrete Work" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: 62 CHAPTER 122. STREETS AND SIDEWALKS ARTICLE II. CONSTRUCTION OF SIDEWALKS, DRIVEWAYS AND CURB AND GUTTERS DIVISION 3. SPECIFICATIONS AND OTHER REGULATIONS Sec. 122-91. Concrete work. The following are standard specifications for concrete sidewalks, driveway approaches, curbs and gutters. The director of public works and engineering is hereby authorized to adopt standards, specifications and standard details consistent with this section. The official copy of the standards, specifications and standard details shall be on file with the director. Concrete work shall not be deemed complete until inspected and accepted by the director. (1) Basic requirement. Concrete shall have a minimum 28-day compressive strength of 3,500 psi, and its mix design shall conform to the city standard specifications. (2) Foundation. The foundation shall consist of firm, hard soil from which all vegetable matter and other loose material have been removed. Sidewalks shall be constructed on a sand cushion. (3) Combined curb and gutter. Curbs and gutters shall be designed and constructed in accordance with the standard specifications and details adopted by the city. (4) Sidewalks. a. Width. Sidewalks shall be not less than five feet wide, unless otherwise approved by the director. b. Construction. Sidewalks shall not be less than four inches thick composed of reinforced concrete. Sidewalks shall be constructed in accordance with the standard specifications and standard details, which include a reinforcing schedule. C. Location. Sidewalks will be located as described in the definition of "sidewalk" in section 18-93(a) of this Code. d. Curb ramps. Barrier free ramps shall be provided at locations required by the city, state and federal law, including the regulations of the Texas Department of Licensing and Regulation, and the Americans with Disabilities Act. (5) Driveway approaches. Driveway approaches shall (i) be composed of reinforced concrete of not less than five inches thick, (ii) meet or exceed FHA minimum standards, and (iii) comply with the standard specifications and standard details adopted by the city. 63 Section 16: That Chapter 122 "Streets and Sidewalks," Article II "Construction of Sidewalks, Driveways and Curb and Gutters," Division 3 "Specifications and Other Regulations," Section 122-92 "Reconstruction of sidewalks on change of line and grade by city" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 122. STREETS AND SIDEWALKS ARTICLE II. CONSTRUCTION OF SIDEWALKS, ❑RIVEWAYS AND CURB AND GUTTERS DIVISION 3. SPECIFICATIONS AND OTHER REGULATIONS Sec. 122-92. Reconstruction of sidewalks on change of line and grade by city. The city reserves the right, when putting down a permanent street pavement, either by original construction or reconstruction, to change or alter the lines and grades of the permanent pavement and of the sidewalks, driveways, curbs and gutters on the street when, in the opinion of the city council and/or the director, such change is necessary for the proper drainage of the street and without liability on the part of the city because of this change. Section 17: That Chapter 122 "Streets and Sidewalks," Article II "Construction of Sidewalks, Driveways and Curb and Gutters," Division 3 "Specifications and Other Regulations," Section 122-96 "Private drains" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 122. STREETS AND SIDEWALKS ARTICLE II. CONSTRUCTION OF SIDEWALKS, DRIVEWAYS AND CURB AND GUTTERS DIVISION 3. SPECIFICATIONS AND OTHER REGULATIONS Sec. 122-96. Private drains. It shall be unlawful for any person to construct or maintain in a public street any drain from private property where such has been laid for the purpose of conveying surface drainage from the private property or drainage from roofs of buildings on private property, unless such drain shall be laid from the property line to the gutter. The drain pipe shall be constructed entirely of approved material and shall be laid entirely underneath the surface of the ground and shall be covered at all points where it crosses under a sidewalk with at least two inches of concrete on top of the pipe. The surface of the sidewalk shall conform in grade to the balance of the walk. All drains shall be made to conform to this chapter. The downspouts on nonresidential buildings must empty directly into a private stormwater collection system. 64 Section 18: That Chapter 122 "Streets and Sidewalks," Article II "Construction of Sidewalks, Driveways and Curb and Gutters," Division 3 "Specifications and Other Regulations," Section 122-97 "Installation of drainage culverts" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 122. STREETS AND SIDEWALKS ARTICLE II. CONSTRUCTION OF SIDEWALKS, DRIVEWAYS AND CURB AND GUTTERS DIVISION 3. SPECIFICATIONS AND OTHER REGULATIONS Sec. 122-97. Installation of drainage culverts. If the owner of any property located within the city requests that the city install drainage culverts in drainage easements or street rights -of -way in cases where the drainage is not significantly impaired, the property owner shall provide the culvert pipe and shall be assessed a fee to cover the costs of the installation. The fee shall be paid by the property owner prior to the installation. The culvert pipe for single-family residential property abutting residential streets with open ditches shall be either reinforced concrete pipe (RCP) conforming to the latest revision of ASTM C-76, class III, corrugated plastic pipe conforming to AASHTO M294 with a minimum pipe stiffness of 46 and a maximum diameter of 30 inches and having gasketed pipe joints, or such other pipe as may be approved by the director. Section 19: That Chapter 122 "Streets and Sidewalks," Article II "Construction of Sidewalks, Driveways and Curb and Gutters," Division 3 "Specifications and Other Regulations," Section 122-99 "General requirements" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 122. STREETS AND SIDEWALKS ARTICLE II. CONSTRUCTION OF SIDEWALKS, DRIVEWAYS AND CURB AND GUTTERS DIVISION 3. SPECIFICATIONS AND OTHER REGULATIONS Sec. 122-99. General requirements. The construction, materials and methods shall conform to the standard specifications and details currently adopted by the public works and engineering department. 65 Section 20: That Chapter 126 "Subdivisions," Article IV "Improvements," Division I "Generally," Section 126-453 "Inspection," of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 1. GENERALLY Sec. 126-453. Inspection. The subdivider or his contractor shall notify the public works and engineering department (PWE) when installation of all approved improvements commences. The installation of such improvements shall take place under the inspection of PWE. Section 21: That Chapter 126 "Subdivisions," Article IV "Improvements," Division I "Generally," Section 126-454 "As -built or record plans," of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 1. GENERALLY Sec. 126-454. As -built or record plans. (a) The subdivider shall present to PWE electronic versions of the complete as -built plans and designs for all paving, drainage structures, water lines and sewer lines in formats acceptable to the city prior to final inspection. As -built or record plans shall be prepared by a professional engineer, licensed in the state of Texas. The as -built or record plans shall be delivered to PWE prior to the filing of the plat or the release of any performance documents. Section 22: That Chapter 126 "Subdivisions," Article IV "Improvements," Division I "Generally," Section 126-455 "Final acceptance," of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: 66 CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 1. GENERALLY Sec. 126-455. Final acceptance. The subdivider shall request, in writing, the final inspection of completed improvements. Upon receipt of this request, the director shall approve in writing all improvements when they are in accordance with approved plans and specifications. Section 23: That Chapter 126 "Subdivisions," Article IV "Improvements," Division I "Generally," Section 126-458 "Traffic control devices" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 1. GENERALLY Sec. 126-458. Traffic control devices. All traffic control devices required under this chapter shall be in compliance with the current edition of the Texas Manual on Uniform Traffic Control Devices. Section 24: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision II "Streets," Section 126-507 "Principal arterials, minor arterials and collectors" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION II. STREETS Sec. 126-507. Principal arterials, minor arterials and collectors. (a) In a subdivision, principal arterial, minor arterial and collector locations and alignments shall be determined by the commission. 67 Section 25: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision II "Streets," Section 126-508 "Right-of-way width" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION II. STREETS Sec. 126-508. Right-of-way width. In a subdivision, the right-of-way width shall be as described in article III of chapter 109 of this code. Section 26: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision II "Streets," Section 126-509 "Curves" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION II. STREETS Sec. 126-509. Curves. The design of curves in roadway alignments shall conform to the requirements of Article III of Chapter 109 of this Code. Section 27: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision II "Streets," Section 126-510 "Intersections" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: 68 CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION H. STREETS Sec. 126-510. Intersections. The design of intersections shall conform to the requirements of article III of chapter 109 of this code. Section 28: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision III "Lots," Section 126-546 "Scope" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION III. LOTS Sec. 126-546. Scope. In a subdivision, the lot design of a neighborhood should provide for lots of adequate width and depth to provide open area and to eliminate overcrowding. Lots should be rectangular so far as practicable and should have the side lot lines at right angles to the streets on which the lot faces or radial to curved street lines. Where the commission approves a through lot, access to the rear of the lot shall be prohibited. Residential lots shall not front on collectors, arterials, or higher roadway classifications. Section 29: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision IV "Easements," Section 126-581 "Drainage easement," Subsection (c) and adding Subsection (d) to the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: 69 CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION IV. EASEMENTS Sec. 126-581. Drainage easement. (c) The dedication of any drainage structure or facility used for the retention or detention of stormwater shall be accepted only at the city's option. (d) Drainage easements shall meet the requirements of article II of chapter 109 of this code. Section 30: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision IV "Easements," Section 126-582 "Utility easements," of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION IV. EASEMENTS Sec. 126-582. Utility easements. Utility easements shall be provided in accordance with the requirements of article II of chapter 109 of this code. Section 31: That Chapter 126 "Subdivisions," Article IV "Improvements," Division 2 "Design Standards," Subdivision IV "Easements," Section 126-583 "Private easements," of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: 70 CHAPTER 126. SUBDIVISIONS ARTICLE IV. IMPROVEMENTS DIVISION 2. DESIGN STANDARDS SUBDIVISION IV. EASEMENTS Sec. 126-583. Private easements. In a subdivision, platting of public streets or easements across private easements or fee strips shall be subject to the following: (1) A copy of the instrument establishing any private easement shall be submitted with the preliminary plat; (2) Easement boundaries must be tied by dimension to adjacent lot and tract corners. Where the private easement has no defined location or width, an effort shall be made to reach an agreement on a defined easement. Where no agreement can be reached, pipelines, electrical lines or other facilities shall be accurately located and tied to lot lines, and building setback lines shall be shown at a distance of ten feet from and parallel to the centerline of the pipeline; (3) Prior to approval of the final plat, the developer or dedicator of any subdivision plat wherein public streets or easements are shown crossing private easements or fee strips shall, by letter to the city engineer, assume responsibility for seeing that any adjustments and protection of existing pipelines, electrical transmission lines or other facilities shall be planned and provided for to the satisfaction of the holder of the private easements or fee strips and the city engineer prior to the filing of the plat for record; and (4) Prior to filing of the final plat for record, the following requirements shall be met: a. The developer or dedicator of any plat shall obtain from the holder of any private easement or fee strip within the plat crossed by proposed streets or other public easements an instrument granting to the public the use of the public streets or easements over and across the private easements or fee strips for construction, operation and maintenance of those public facilities normally using the type of public streets and easements indicated. This instrument shall be delivered to the director of planning and community development to be recorded along with the plat. b. The developer shall furnish the director of planning and community development with a letter from the holder of the private easements or fee strips in question stating that arrangements in pipelines, electric 71 transmission lines or other similar facilities have been made to the satisfaction of the holder of the easement. (5) All other easements shall meet the requirements set forth in article II of chapter 109 of this code. Section 32: That Chapter 126 "Subdivisions," Article V "Engineering and Construction Standards," Division 1 "Generally," Section 126-611 "Engineering data" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE V. ENGINEERING AND CONSTRUCTION STANDARDS ❑IVISION 1. GENERALLY Sec. 126-611. Engineering data. The following engineering data are required for subdivisions; all preliminary plats shall have approximate data: (1) Streets. Centerline survey data for rights -of -way shall be provided as follows: a. Complete curve data chord length and bearing, radius, arc length, tangent, point of curvature, point of tangency and delta; b. The length and bearings of all tangents; and C. The dimensions from all angle points and points of curve to an adjacent side lot line. (2) Lots. Complete bearings and distances for front, rear and side lot lines shall be provided. (3) Watercourses and easements. Data for watercourses and easements shall be provided as follows: a. Distances along the side lot lines from the front lot line to the point where the side line crosses the drainage easement line or the high bank of a stream; and b. The traverse line along the edges of all large watercourses in a convenient location, preferably along a utility easement if paralleling the drainage easement or stream. 72 Section 33: That Chapter 126 "Subdivisions," Article V "Engineering and Construction Standards," Division 2 "Streets," of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE V. ENGINEERING AND CONSTRUCTION STANDARDS DIVISION 2. STREETS Sec.126-641. Standards. Streets within all subdivisions shall be designed and constructed in accordance with the standards set forth in article III of chapter 109 of this code. Sec. 126-642. Streetlights. Streetlights within all subdivisions shall be installed in accordance with the standards set forth in article III of chapter 109 of this code. Sec. 126-643. Street name signs. Street name signs within all subdivisions shall be installed in accordance with the standards set forth in article III of chapter 109 of this code. Sec. 126-644. Access management. Access management within all subdivisions shall be designed and constructed in accordance with the standards set forth in article III of chapter 109 of this code. Section 34: That Chapter 126 "Subdivisions," Article V "Engineering and Construction Standards," Division 3 "Stormwater Drainage," of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: 73 CHAPTER 126. SUBDIVISIONS ARTICLE V. ENGINEERING AND CONSTRUCTION STANDARDS DIVISION 3. STORMWATER DRAINAGE Sec. 126-671. Drainage facilities. Drainage facilities and systems shall be designed and constructed in accordance with article IV of chapter 109 of this code within the limits of each subdivision. Sec. 126-672. Detention facilities. Detention facilities for all subdivisions shall be designed and constructed in accordance with article IV of chapter 109 of this code. Section 35: That Chapter 126 "Subdivisions," Article V "Engineering and Construction Standards," Division 4 "Utilities" of the Code of Ordinances, Baytown, Texas, is hereby amended to read as follows: CHAPTER 126. SUBDIVISIONS ARTICLE V. ENGINEERING AND CONSTRUCTION STANDARDS DIVISION 4. UTILITIES Sec. 126-706. Utility systems. Water distribution and wastewater collection systems for all subdivisions shall be designed and constructed in accordance with the standards set forth in article V of chapter 109 of this code. Section 35: All ordinances or parts of ordinances inconsistent with the terms of this ordinance are hereby repealed; provided, however, that such repeal shall be only to the extent of such inconsistency; and in all other respects, this ordinance shall be cumulative of other ordinances regulating and governing the subject matter covered by this ordinance. Section 36: If any provision, section, exception, subsection, paragraph, sentence, clause or phrase of this ordinance or the application of same to any person or the set of circumstances shall for any reason be held unconstitutional, void or invalid, such invalidity shall not affect the validity of the remaining provisions of this ordinance or their application to other persons or sets of circumstances; and to this end, all provisions of this ordinance are declared to be severable. 74 Section 37: Any person who fails to comply with any provision of this ordinance shall be guilty of a misdemeanor and, upon conviction, shall be punished by a fine of not more than FIVE HUNDRED AND NO/100 DOLLARS ($500.00). Each act of violation and each day upon which any such violation shall occur shall constitute a separate offense. Section 38: This ordinance shall take effect on January 1, 2021, after its passage by the City Council of the City of Baytown. The City Clerk is hereby directed to give notice hereof by causing the caption of this ordinance to be published in the official newspaper of the City of Baytown at least twice within ten (10) days after passage of this ordinance. INTRODUCED, READ, and PASSED by the affirmative vote of the City Council of the City of Baytown, this the 1 Oth day of December, 20 ON CAP TIL yor A EST: LETICIA BRYSCH, Ci Cl rk APPROVED AS TO FORM: KAREN-t.-MRNER, City Attorney RAKaren Homer DocumentsTiles City Council. Ordinances\2020 December:O\FinalFloodEnginering&SubdivisionRegulations.DOCX 79