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HomeMy WebLinkAboutS-1424-I Staff AnalysisITEM NO.: 2. S-1424-1 NAME: Sienna Lake Revised Preliminary Plat LOCATION: located on Benham Lane just south of Marchwood Lane Plan nin Staff Comments: 1. Provide notification of the abutting property owners including the certified abstract list, notice form with affidavit executed and proof of mailing. The notice must be mailed no later than October 16, 2018. The Office of Planning and Development must receive the proof of notice no later than October 26, 2018. 2. Label the front setback line and remove the rear setback line. 3. Provide the source of title for the land owner. 4. Provide the corrected preliminary plat certification for the City. 5. Provide the zoning classification of the abutting property on the plat. 6. Indicate on the plat the proposed turn -around at the end of the street. VariancelWaivers: A variance from the Land Alteration Ordinance to allow grading of the lots with the installation of the streets. Engineering Comments: Public Works Conditions: 1. With site development, provide the design of street conforming to the Master Street Plan. Construct street improvements to these streets in accordance with City of Little Rock standard details including 5-foot sidewalks with the planned development. The sidewalk should not be located at the back of curb. The proposed street should be at least 26 feet in width measured from back of curb to back of curb. 2. With the extension of Benham Lane in the future installation as shown on the overall development plan, traffic calming should be installed within this portion of the street. Traffic calming devices are required for long straight streets to discourage speeding. Traffic circles, pedestrian tables, narrowing, or round -a -bouts are suggested at regular intervals and at main intersections. Contact Traffic Engineering, Travis Herbner, therbner littlerock. ov or 501.379.1805 for additional information. 3. Plans of all work in right-of-way shall be submitted for approval prior to stark of work. Obtain barricade permit prior to doing any work in the right-of-way from Traffic Engineering, Travis Herbner, therbner littlerock. ov or 501,379.1805. 4. A grading permit in accordance with Section 29-186 (c) and (d) will be required prior to any land clearing or grading activities at the site. Other than residential subdivisions, site grading and drainage plans must be submitted and approved prior to the start of construction. Is a variance being requested to advance grade the lots with construction of the street and installation of utilities? Is any adjacent area proposed to be advanced graded for the placement of fill or for borrow material beyond the area to be platted. ITEM NO.: 2. _ S-1424-1 5. Minimum pipe size in the City of Little Rock is 15-inch diameter. 6. The proposed HDPE pipe is not allowed to be installed within the right-of-way and drainage easements. The HDPE pipe should be replaced with HDPP pipe. 7. Curb inlets should be installed per City of Little Rock standard details PW-1A or PW- 1 B with the appropriate sized wing extension. 8. Comments on the drainage calculations are not included in this review. Those calculations will be reviewed at time of construction plan review. 9. Stormwater detention ordinance applies to this property. Show the proposed location for stormwater detention facilities on the plan. Maintenance of the detention pond and all private drainage improvements is the responsibility of the developer and/or property owners association. 10. If disturbed area is one (1) or more acres, obtain a NPDES stormwater permit from the Arkansas Department of Environmental Quality prior to the start of construction. 11. Street improvement plans shall include signage and striping. Public Works must approve completed plans prior to construction. 12.Streetlights are required by Section 31-403 of the Little Rock code. Provide plans for approval to Traffic Engineering. Streetlights must be installed prior to platting/certificate of occupancy. Contact Traffic Engineering, Greg Simmons, gsim eons __littlerock.gov or 501. 379.1813 for more information. 13. Hauling of fill material on or off site over municipal streets and roads requires approval prior to a grading permit being issued. Contact Public Works Traffic Engineering, Travis Herbner, therbner littlerock. ov or 501.379.1805 for more information. 14. Maximum slopes allowed are 3:1. 15.Vegetation must be established on disturbed area within 21-days of completion of harvest activities. 16. Erosion controls must be installed to reduce discharge of polluted stormwater. 17. Damage to public and private property due to hauling operations or operation of construction related equipment from a nearby construction site shall be repaired by the responsible party prior to issuance of a certificate of occupancy. 18.All public drainage easements must be unobstructed and access provided to the public right-of-way by constructed infrastructure and/or documented on the final plat. Tract O should be platted in place of the proposed drainage easements to prevent obstruction for future maintenance. 19. Hammerheads should be designed to be at least 80-feet in length and the same width as the street if the dead-end is 150-feet or less. If the dead-end is 151-feet to 750- feet, the hammerhead should be designed to be at least 120-feet in length and the same width as the street. If the dead-end is 751-feet or more, special approval is required from the Little Rock Fire Department, Fire Marshal. If the turnaround is temporary, an 80-foot diameter gravel turnaround is required to be installed. 20. Show proposed location(s) of USPS cluster box units in conformance with USPS and City of Little Rock policy design standards. 21.AI1 public drainage easements must contain drainage infrastructure approved by the City of Little Rock Public Works Department. 2 ITEM NO.: 2. S-1424-1 Utilities/Fire Department/Parks/County Plannin : Little Rock Water Reclamation Authority- Sewer main extension required with easements if sewer service is required for this project. Zero Capacity Fee required. Contact Little Rock Water Reclamation Authority for additional information. Entergy: Entergy does not object to this proposal. Underground service is already provided in this area to existing residences at the northwest edge of the proposed project. Contact Entergy in advance to discuss electrical service requirements, extensions or adjustments to existing facilities. Centerpoint Energy: No comment received. AT & T: No comment received. Central Arkansas Water: No comment received. Fire Department: 1. Full Plan Review — Maintain Access 2. Fire Hydrants. Maintain fire apparatus access roads at fire hydrant locations as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.1 Access road width with a hydrant. Where a fire hydrant is located on a fire apparatus access road, the minimum road width shall be 26 feet, exclusive of shoulders. 3. Grade. Maintain fire apparatus access roads as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.2 Grade. Fire apparatus access roads shall not exceed 10 percent in grade except as approved by the fire chief. 4. Loadinq. Maintain fire apparatus access road design as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D102.1 Access and loading. Facilities, buildings or portions of buildings hereafter constructed shall be accessible to fire department apparatus by way of an approved fire apparatus access road with an asphalt, concrete or other approved driving surface capable of supporting the imposed load of fire apparatus weighing at least 75,000 pounds. 5. Commercial and Industrial Developments — 2 means of access. - Maintain fire apparatus access roads as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 a. Section D104.1 Buildings exceeding three stories or 30 feet in height. Building or facilities exceeding 30 feet or three stories in height shall have at least two means of fire apparatus access for each structure. b. Section D104.2 Building exceeding 62,000 square feet in area. Buildings or facilities having a gross building area of more than 62,000 square feet shall be provide with two separate and approved fire apparatus access roads. ITEM NO.: 2. S-1424-1 c. Exception: Projects having a gross building area of up to 124,000 square feet that have a single approved fire apparatus access road when all building are equipped throughout with approved automatic sprinkler systems. d. D104.3 Remoteness. Where two fire apparatus access roads are required, they shall be placed a distance apart equal to not less than one half of the length of the maximum overall diagonal dimension of the lot or area to be served, measured in a straight line between accesses. 6. Dead Ends. Maintain fire apparatus access roads at dead end locations as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.4 Dead Ends. Dead- end fire apparatus access roads in excess of 150 feet shall be provided with width and turnaround provisions in accordance with Table D103.4. Requirements for Dead-end fire apparatus access roads. 7. Gates. Maintain fire apparatus access road gates as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.5 Fire apparatus access road gates. Gates securing the fire apparatus access roads shall comply with all of the following criteria: 1. Minimum gate width shall be 20 feet. 2. Gates shall be of swinging or sliding type. 3. Construction of gates shall be of material that allow manual operation by one person. 4. Gate components shall be maintained in an operable condition at all times and replaces or repaired when defective. 5. Electric gates shall be equipped with a means of opening the gate by fire department personnel for emergency access. Emergency opening devices shall be approved by the fire code official. 6. Manual opening gates shall not be locked with a padlock or chain and padlock unless they are capable of being opened by means of forcible entry tools or when a key box containing the keys to the lock is installed at the gate location. 7. Locking device specifications shall be submitted for approval \by the fire code official 8. Electric gate operators, where provided, shall be listed in accordance with UL 325. 9. Gates, intended for automatic operation shall be designed, constructed and installed to comply with requirements of ASTM F 2200. 8. One- or Two -Family Residential Developments. As per Appendix D, Section D107.1 of the Arkansas Fire Prevention Code Vol. 1, One- or Two -Family dwelling residential developments. Developments of one- or two-family dwellings where the number of dwelling units exceeds 30 shall be provided with two separate and approved fire apparatus access roads, and shall meet the requirements of Section D104.3. Exceptions: a. Where there are more than 30 dwelling units on a single public or private fire apparatus access road and al dwelling units are equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1, ITEM NO.: 2. S-1424-1 903.3.1.2 or 903.3.1.3 of the Arkansas Fire Code, access from two directions shall not be required. b. The number of dwelling units on a single fire apparatus access road shall not be increased unless fire apparatus access roads will connect with future development, as determined by the fire code official. 9. Fire H drants. Locate Fire Hydrants as per Appendix C of the 2012 Arkansas Fire Prevention Code. Section C101 — C105, in conjunction with Central Arkansas Water (Jason Lowder 501.377.1245) and the Little Rock Fire Marshal's Office (Capt. Tony Rhodes 501.918.3757 or Capt. John Hogue 501.918.3754). Number and Distribution of Fire Hydrants as per Table C105.1. Parks and Recreation: No comment received. County Planning: No comment. Building Codes/Landscape: Building Code: As per 2012 Arkansas Fire Prevention Code Volume III Residential Construction, Section R302.1(1) Table, Houses 5-feet apart must have one (1) hour fire walls on each exterior wall and no openings are allowed in that wall for doors or windows. The 2012 AR Fire Prevention Code Vol. III for one (1) and two (2) family dwellings requires foundations meet the following Sections of the Code. If the foundation cannot be verified by the building official at the time of the footing inspection the building official may require verification the foundation meets the required elevation by a licensed engineer. R403.1.7.3 Foundation elevation. On grade sites, the top of any exterior foundation shall extend above the elevation of the street gutter at point of discharge or the inlet of an approved drainage device a minimum of 12-inches (305 mm) plus two (2) percent. R403.1.7.4 Alternate setback and clearances. Alternate setbacks and clearances are permitted, subject to the approval of the building official. The building official is permitted to require an investigation and recommendation of a qualified engineer to demonstrate that the intent of this Section has been satisfied. Such an investigation shall include consideration of materials, height of slope, slope gradient, load intensity and erosion characteristics of slope material. Landscape: No comment. TransportationlPlannin Rock Region Metro: The site is not located on a dedicated Rock Region Metro Route. ITEM NO.: 2. S-1424-1 Plan iing Division: No comment. Revised plat/plan: Submit four (4) copies of a revised preliminary plat/plan (to include the additional information as noted above) to staff on or before Wednesday, October 17, 2018. If you have any questions please contact Dana Carney, dcarne littlerock. ov or 501.371.6817 or Jamie Collins, gcolIiris@IiqIerock.gov or 501.37,1.6818. December 13, 2018 ITEM NO.: E FILE NO.: S-1424-1 NAME: Sienna Lake Revised Preliminary Plat LOCATION: Located on Benham Lane just south of Marchwood Lane DEVELOPER: Cooper Land Development 903 N 47t" Street Rogers, AR 72756 OWNER/AUTHORIZED AGENT: Cooper Land Development, Owner Harbor II Environmental II Safety II Engineering, Agent SURVEYOR/ENGINEER: Harbor II Environmental 5800 Evergreen Little Rock, AR 72205 II Safety II Engineering AREA: 8.96-acres NUMBER OF LOTS: 16 WARD: 7 PLANNING DISTRICT: 17 — Crystal Valley CURRENT ZONING VARIANCENVAIVERS BACKGROUND. R-2, Single-family None requested. FT. NEW STREET: 750 LF CENSUS TRACT: 42.21 On April 22, 2004, the Little Rock Planning Commission approved a preliminary plat for the first phase of a multiple phase single-family development for Cooper Development. The proposed preliminary plat included 40.48-acres to be developed with 78 single-family lots. The developers indicated at total build -out, the development would contain 363-acres and 605 single-family lots and the Commission would review each of the future phases as development became imminent. The development plan included a fifteen -year build -out. The applicant indicated areas would be set aside as common areas and designated as green space. A series of trails were to be constructed through -out the neighborhood to provide connectivity to the proposed recreational areas. December 13, 2018 SUBDIVISION M NO.: E [Cont. FILE NO.: S-1424-1 On December 7, 2006, the Little Rock Planning Commission approved Phase II of the proposed Siena Lakes Subdivision. The area included Blocks 2 and 3 with a total of 93 lots. On August 7, 2014, the Little Rock Planning Commission approved a request to allow the development of Phase 3, Blocks 4 and 5 of the Sienna Lake Subdivision. This phase of the subdivision was to include 10.747 acres for Lots 1 — 23, Block 4 and 5.823 acres for Lots 1 — 10, Block 5 of the Sienna Lake Subdivision. On August 11, 2016, the Little Rock Planning Commission approved a preliminary plat for Block 6 Sienna Lake Subdivision. This phase of the subdivision included 4.22-acres and 11 lots. A. PROPOSAL/REQUEST/APPLICANT'S STATEMENT: The applicant is now requesting preliminary plat approval for Block 7, Sienna Lake Addition. The proposal includes the development of 8.96-acres with 16 new residential lots. The proposal does not include any waivers or variances from the City's Subdivision Ordinance with regard to lot development standards. The request does not include a variance from the Land Alteration Ordinance to allow grading of the lots with the installation of the streets. B. EXISTING CONDITIONS: The subdivision is in various state of development. The infrastructure for the first phases of the subdivision, nearer Crystal Valley Road, have been installed and a number of the lots have developed with single-family homes. Along West Lake Drive lots have been final platted and new homes have been constructed. The clubhouse, pool and tennis court for the subdivision have been developed along the northern boundary of the lake. The area proposed for preliminary platting is an extension of Benham Lane. The area is tree covered. C. NEIGHBORHOOD COMMENTS: All abutting property owners along with the Crystal Valley Property Owners Association, Plantation Acres Property Owners Association and Southwest Little Rock United for Progress were notified of the public hearing. D. ENGINEERING COMMENTS: PUBLIC WORKS CONDITIONS: With site development, provide the design of street conforming to the Master Street Plan. Construct street improvements to these streets in accordance 6 December 13, 2018 SUBDIVISION ITEM NO.: E Cont. FILE NO.. S-1424-1 with City of Little Rock standard details including 5-foot sidewalks with the planned development. The sidewalk should not be located at the back of curb. The proposed street should be at least 26 feet in width measured from back of curb to back of curb. 2. With the extension of Benham Lane in the future installation as shown on the overall development plan, traffic calming should be installed within this portion of the street. Traffic calming devices are required for long straight streets to discourage speeding. Traffic circles, pedestrian tables, narrowing, or round -a -bouts are suggested at regular intervals and at main intersections. Contact Traffic Engineering, Travis Herbner, therbner littlerock. ov or 501.379.1805 for additional information. 3. Plans of all work in right-of-way shall be submitted for approval prior to start of work. Obtain barricade permit prior to doing any work in the right-of-way from Traffic Engineering, Travis Herbner, therbner littlerock. ov or 501.379.1805. 4. A grading permit in accordance with Section 29-186 (c) and (d) will be required prior to any land clearing or grading activities at the site. Other than residential subdivisions, site grading and drainage plans must be submitted and approved prior to the start of construction. Is a variance being requested to advance grade the lots with construction of the street and installation of utilities? Is any adjacent area proposed to be advanced graded for the placement of fill or for borrow material beyond the area to be platted. 5. Minimum pipe size in the City of Little Rock is 15-inch diameter. 6. The proposed HDPE pipe is not allowed to be installed within the right-of-way and drainage easements. The HDPE pipe should be replaced with HDPP pipe. 7. Curb inlets should be installed per City of Little Rock standard details PW-1A or PW-1 B with the appropriate sized wing extension. 8. Comments on the drainage calculations are not included in this review. Those calculations will be reviewed at time of construction plan review. 9. Stormwater detention ordinance applies to this property. Show the proposed location for stormwater detention facilities on the plan. Maintenance of the detention pond and all private drainage improvements is the responsibility of the developer and/or property owners association. 10. If disturbed area is one (1) or more acres, obtain a NPDES stormwater permit from the Arkansas Department of Environmental Quality prior to the start of construction. 11. Street improvement plans shall include signage and striping. Public Works must approve completed plans prior to construction. 3 December 13, 2018 SUBDIVISION ITEM NO.: E Cont. FILE NO.: S-1494-1 12. Streetlights are required by Section 31-403 of the Little Rock code. Provide plans for approval to Traffic Engineering. Streetlights must be installed prior to platting/certificate of occupancy. Contact Traffic Engineering, Greg Simmons, gsimmons a@littlerock.goy or 501. 379.1813 for more information. 13. Hauling of fill material on or off site over municipal streets and roads requires approval prior to a grading permit being issued. Contact Public Works Traffic Engineering, Travis Herbner, therbner@ljttlerock.gov or 501.379.1805 for more information. 14. Maximum slopes allowed are 3:1. 15. Vegetation must be established on disturbed area within 21-days of completion of harvest activities. 16. Erosion controls must be installed to reduce discharge of polluted stormwater. 17. Damage to public and private property due to hauling operations or operation of construction related equipment from a nearby construction site shall be repaired by the responsible party prior to issuance of a certificate of occupancy. 18. All public drainage easements must be unobstructed and access provided to the public right-of-way by constructed infrastructure and/or documented on the final plat. Tract O should be platted in place of the proposed drainage easements to prevent obstruction for future maintenance. 19. Hammerheads should be designed to be at least 80-feet in length and the same width as the street if the dead-end is 150-feet or less. If the dead-end is 151-feet to 750-feet, the hammerhead should be designed to be at least 120-feet in length and the same width as the street. If the dead-end is 751-feet or more, special approval is required from the Little Rock Fire Department, Fire Marshal. If the turnaround is temporary, an 80-foot diameter gravel turnaround is required to be installed. 20_ Show proposed location(s) of USPS cluster box units in conformance with USPS and City of Little Rock policy design standards. 21. All public drainage easements must contain drainage infrastructure approved by the City of Little Rock Public Works Department. E. UTILITIES/FIRE DEPARTMENT/PARKS/COUNTY PLANNING: Little Rock Water Reclamation Authority- Sewer main extension required with easements if sewer service is required for this project. Zero Capacity Fee required. Contact Little Rock Water Reclamation Authority for additional information. Enter. : Entergy does not object to this proposal. Underground service is already provided in this area to existing residences at the northwest edge of the proposed 2 December 13, 2018 SUBDIVISION ITEM NO.: E (Cont. FILE NO.: S-1424-1 project. Contact Entergy in advance to discuss electrical service requirements, extensions or adjustments to existing facilities. Centerpoint Energy: No comment received. AT & T: No comment received. Central Arkansas Water: No comment received. Fire De artment: 1. Full Plan Review — Maintain Access 2. Fire Hydrants. Maintain fire apparatus access roads at fire hydrant locations as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.1 Access road width with a hydrant. Where a fire hydrant is located on a fire apparatus access road, the minimum road width shall be 26 feet, exclusive of shoulders. 3. Grade. Maintain fire apparatus access roads as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.2 Grade. Fire apparatus access roads shall not exceed 10 percent in grade except as approved by the fire chief. 4. Load in . Maintain fire apparatus access road design as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D102.1 Access and loading. Facilities, buildings or portions of buildings hereafter constructed shall be accessible to fire department apparatus by way of an approved fire apparatus access road with an asphalt, concrete or other approved driving surface capable of supporting the imposed load of fire apparatus weighing at least 75,000 pounds. 5. Commercial and Industrial Develo meats — 2 means of access. - Maintain fire apparatus access roads as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 a. Section D104.1 Buildings exceeding three stories or 30 feet in height. Building or facilities exceeding 30 feet or three stories in height shall have at least two means of fire apparatus access for each structure. b. Section ❑104.2 Building exceeding 62,000 square feet in area. Buildings or facilities having a gross building area of more than 62,000 square feet shall be provide with two separate and approved fire apparatus access roads. c. Exception: Projects having a gross building area of up to 124,000 square feet that have a single approved fire apparatus access road -0 December 13, 2018 SUBDIVISION NO.: E (Cont.) FILE NO.: S-1424-1 when all building are equipped throughout with approved automatic sprinkler systems. d. D104.3 Remoteness. Where two fire apparatus access roads are required, they shall be placed a distance apart equal to not less than one half of the length of the maximum overall diagonal dimension of the lot or area to be served, measured in a straight line between accesses. 6. Dead Ends. Maintain fire apparatus access roads at dead end locations as per Appendix ❑ of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.4 Dead Ends. Dead-end fire apparatus access roads in excess of 150 feet shall be provided with width and turnaround provisions in accordance with Table D103.4. Requirements for Dead-end fire apparatus access roads. 7. Gates. Maintain fire apparatus access road gates as per Appendix D of the 2012 Arkansas Fire Prevention Code Vol. 1 Section D103.5 Fire apparatus access road gates. Gates securing the fire apparatus access roads shall comply with all of the following criteria: 1. Minimum gate width shall be 20 feet. 2. Gates shall be of swinging or sliding type. 3. Construction of gates shall be of material that allow manual operation by one person. 4. Gate components shall be maintained in an operable condition at all times and replaces or repaired when defective. 5. Electric gates shall be equipped with a means of opening the gate by fire department personnel for emergency access. Emergency opening devices shall be approved by the fire code official. 6. Manual opening gates shall not be locked with a padlock or chain and padlock unless they are capable of being opened by means of forcible entry tools or when a key box containing the keys to the lock is installed at the gate location. 7. Locking device specifications shall be submitted for approval by the fire code official 8. Electric gate operators, where provided, shall be listed in accordance with U L 325. 9. Gates, intended for automatic operation shall be designed, constructed and installed to comply with requirements of ASTM F 2200. 0 December 13, 2018 SUBDIVISION ITEM NO.: E(Cont.)FILE NO.: S-1424-1 8. One- or Two -Family Residential Develo gents. As per Appendix D, Section D107.1 of the Arkansas Fire Prevention Code Vol. 1, One- or Two -Family dwelling residential developments. Developments of one- or two-family dwellings where the number of dwelling units exceeds 30 shall be provided with two separate and approved fire apparatus access roads, and shall meet the requirements of Section D104.3. Exceptions: a. Where there are more than 30 dwelling units on a single public or private fire apparatus access road and al dwelling units are equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1, 903.3.1.2 or 903.3.1.3 of the Arkansas Fire Code, access from two directions shall not be required. b. The number of dwelling units on a single fire apparatus access road shall not be increased unless fire apparatus access roads will connect with future development, as determined by the fire code official. 9. Fire Hydrants. Locate Fire Hydrants as per Appendix C of the 2012 Arkansas Fire Prevention Code. Section C101 — C105, in conjunction with Central Arkansas Water (Jason Lowder 501.377.1245) and the Little Rock Fire Marshal's Office (Capt. Tony Rhodes 501.918.3757 or Capt. John Hogue 501.918.3754). Number and Distribution of Fire Hydrants as per Table C105.1. Parks and Recreation: No comment received. Count Plannin : No comment. F. BUILDING CODESILANDSCAPE: Building Code: As per 2012 Arkansas Fire Prevention Code Volume III Residential Construction, Section R302.1(1) Table, Houses 5-feet apart must have one (1) hour fire walls on each exterior wall and no openings are allowed in that wall for doors or windows. The 2012 AR Fire Prevention Code Vol. III for one (1) and two (2) family dwellings requires foundations meet the following Sections of the Code. If the foundation cannot be verified by the building official at the time of the footing inspection the building official may require verification the foundation meets the required elevation by a licensed engineer. R403.1.7.3 Foundation elevation. On grade sites, the top of any exterior foundation shall extend above the elevation of the street gutter at point of 7 December 13, 2018 SUBDIVISION ITEM NO.: E Cont.) FILE NO.: S-1424-1 discharge or the inlet of an approved drainage device a minimum of 12-inches (305 mm) plus two (2) percent. R403.1.7.4 Alternate setback and clearances. Alternate setbacks and clearances are permitted, subject to the approval of the building official. The building official is permitted to require an investigation and recommendation of a qualified engineer to demonstrate that the intent of this Section has been satisfied. Such an investigation shall include consideration of materials, height of slope, slope gradient, load intensity and erosion characteristics of slope material. Landscape: No comment. G. TRANSPORTATION/PLANNING: Rock Region Metro: The site is not located on a dedicated Rock Region Metro Route. Planning Division: No comment. H. SUBDIVISION COMMITTEE COMMENT: (October 10, 2018) The applicant was present. Staff presented an overview of the item stating there were few outstanding technical issues in need of addressing related to the proposed preliminary plat. Staff requested the applicant provide the proper City certification on the proposed plat. Staff also requested the applicant label the front setback and remove the side and rear setbacks labeled on the plat. Staff requested the applicant provide the zoning classification within the plat area and of abutting land areas. Public Works comments were addressed. Staff requested the applicant provide a plan showing the future extensions to Benham Lane to determine if there was a need for the installation of traffic calming devices on the street. Staff also stated the City's Stormwater Detention Ordinance would apply to the future development of the plat area. Staff stated a grading permit was required prior to any grading activities on the site. Staff stated a hammerheads turn -around should be provided at the end of the street. Staff stated turn -around should be designed to be at least 80-feet in length and the same width as the street. Staff stated if the turn -around was temporary an 80-foot diameter gravel turnaround would be allowed. Staff questioned if the development was requesting a variance from the Land Alteration Ordinance to allow grading of the lots with the installation of the streets. The applicant stated the request did not include a variance to allow grading of the lots with the installation of the streets. He stated the lots would be graded when a building permit for the home was issued. 0 December 13, 2018 SUBDIVISION ITEM NO.: E Cont. FILE NO.: S-1424-1 Staff noted the comments from the various other departments and agencies. Staff suggested the applicant contact the departments or agencies directly with any questions or concerns. There were no more issues for discussion. The Committee then forwarded the item to the full Commission for final action. ANALYSIS: The applicant submitted responses to issues raised from the October 10 Subdivision Committee meeting. The proposal is preliminary plat approval for Block 7, Sienna Lake Addition. The proposal includes the development of 8.96 acres with 16 new residential lots and 750 linear feet of new street. The proposed plat does not include any waivers or variances from the City's Subdivision Ordinance with regard to lot development standards. The request does not include a variance to allow advance grading of the lots with installation of the basic infrastructure. The average lot size is 15,085 square feet and the minimum lot size is 12,330 square feet. The requested documentation has been provided on the plat. The extension of Benham Lane has been shown with a future connection to Sienna Lake Lane. A temporary 80-foot diameter gravel turnaround has been provided at the end of Benham Lane. As of this writing, staff is continuing to work with the applicant on stormwater detention issues. An update will be provided at the commission meeting. J. STAFF RECOMMENDATION: Recommendation forthcoming. PLANNING COMMISSION ACTION- (NOVEMBER 1, 2018) The applicants were not present. There were no objectors present. Staff informed the commission that the applicants had failed to respond to subdivision committee issues in a timely manner and the item needed to be deferred. There was no further discussion. The item was placed on the consent agenda and deferred to the December 13, 2018 meeting by a vote of 11 ayes, 0 noes and 0 absent. 0 December 13, 2018 SUBDIVISION ITEM NO.: E Cont. FILE NO.: S-1424-1 PLANNING COMMISSION ACTION: (DECEMBER 13, 2018) The applicant was present. There were no objectors present. Staff informed the commission that the applicant and staff had reached a resolution on the issue of stormwater detention. Staff presented the item and a recommendation of approval subject to compliance with the comments and conditions outlined in paragraphs D, E and F of the agenda staff report. Staff also added the following additional condition from Public Works: "Public Works recommends approval of the preliminary plat for Sienna Lake Subdivision Block 7 subject to construction of stormwater detention pond(s) in conformance with the City of Little Rock Stormwater Management and Drainage Manual prior to platting of any lot(s) beyond the current proposed phase located outside of the Sienna Lake drainage basin." There was no further discussion. The item was placed on the consent agenda and approved as recommended by staff; including all staff comments and conditions. The vote was 10 ayes, 0 noes and 1 absent. W