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06/24/2002-PZ-Agenda Packet-RegularAGENDA PLANNING AND ZONING COMMISSION MONDAY, JUNE 249 2002 201 BOLIVAR 6:00 P.M. 1. Call Meeting to Order. 2. ` ° ''Approve Minutes: May 30, 2002 3. Consider and Possible Action on Final Plat for Eagle Park, Phase H. Property is Located on F.M. 455. 4. Consider and Possible Action on the Preliminary Plat for Quail Run, Being 380 Residential Lots and 2 Open Spaces out of 82.43 Acres Located off of Cowling Road. 5. Consider and Possible Action on the Preliminary Plat for Fallmeadows, Phase II & III. Property is Located on F.M. 455 and Union Hill, in the E.T.J. 6. Consider and Possible Action on the Final Plat for Fallmeadows, Phase II & HL Property is Located on F.M. 455 and Union Hill, in the E.T.J. 7. Adjourn. SqN i 2 • — Rosalie Chavez, City Secr ry •''•••....... •.•� ���� rr -moo-off // ; yS � r�. TEXg ipic`o Date and Time Posted This facility is wheelchair accessible and accessible parking spaces are available. Requests for accommodations or interpretive services must be made 48 hours prior to this meeting. Please contact the Ci Secrete 's office at 940 458-7930 for further information. MINUTES: Planning and Zoning May 30, 2002 PRESENT: Polly Dwyer, Joe Falls, Shelley Ruland, Ralph Cain ABSENT: Jack Richardson, Ken Perry OTHERS PRESENT: City Manger Jack Smith, Assistant City Secretary Samantha Renz, Greg Edwards, Gary Hammet, John R. Porter 1. Shelley Ruland Called Meeting to Order. 2. Approve Minutes: April 11, 2002 Joe Falls moved to approve the minutes as presented. Polly Dwyer seconded. Motion carried unanimously. 3. Consider and Possible Action on a Preliminary Plat of Clear Creek Commercial Park, Lots 1, 29, & 3, Block A. Property is located on Stemmons Rd. between Church and Austin Streets. Samantha Renz indicated the items on the Engineer's letter had been addressed, except that the fence will be put up when the plat is approved. The monuments have not been done in the past, the previous engineer indicated these had never been done and suggested taking it off of the Plat Check List; however, the current engineer would like to see the monuments put in. Discussed sewer to the property. Discussed possible proposed uses for the property. Shelley Ruland asked if there would be restrictions as far as access from the service road. Ken Wilson indicated the entrances would be off of Church or Austin Street. There will be no entrances from the service road. Discussion regarding the fence. Polly moved to approve the Preliminary Plat for Clear Creek Commercial park with the requirements as mentioned by the engineer. Ralph Cain seconded. Motion carried unanimously. 4. Consider and Possible Action on a Final Plat of Clear Creek Commercial Park, Lots 1, 2, & 3, Block A. Property is located on Stemmons Rd. between Church and Austin Streets. Polly moved to approve the Final Plat for Clear Creek Commercial Park, Joe Falls seconded. Motion carried unanimously. 5. Consider and Possible Action on Preliminary Plat for Sanger Industrial Park, Property is Located on Loop 138 and F.M. 455, West of the Railroad Tracks. Shelley Ruland asked if the R.O.W. width was addressed on this plat. Discussion regarding the R.O.W. Joe Falls expressed concerns regarding the drainage and if the R.O.W. width was enough along lot 8 because of the amount of drainage. Discussion regarding street widths. Mr. Porter indicated they measured University Drive in Denton, Texas. It has a 38 foot median and two lanes on each side, and it measured a total of 82 feet. They have allowed for 90 feet total and feel this will be adequate. Discussion. Polly moved to approve the Preliminary Plat, Ralph Cain seconded. Motion carried unanimously 6. Conduct Public Hearing to Consider a Replat on property legally described as Meadowlands Addition, Lots 13R1 and 13R2, Being a Replat of Lot 13. Property is located on Jennifer Circle. Public Hearing Opened. Gary Hammet, prepared the plat for developer, indicated they were in favor of the Replat. Public hearing closed. 7. Consider and Possible Action Regarding a Replat on property legally described as Meadowlands Addition, Lots 13R1 and 13R2, Being a Replat of Lot 13. Property is located on Jennifer Circle. Polly Dwyer asked if this would be for houses. Mr. Hammet indicated it would be. Shelley Ruland asked what the County requirement was for Septic systems. Mr. Hammet indicated a one acre minimum for septic systems. Discussion regarding water and sewer and the easements. Polly moved to approve the Replat of Meadowlands Addition, Lot 13R1, and 13112. Joe Falls seconded. Motion carried unanimously. 8. Conduct Public Hearing to Consider a Replat of Sanger I-35Industrial Park, Lots 1R 1, 1R-2, and 2R-1, block A. Property is Located on F.M. 455 and Acker Street. Public Hearing opened. John Porter spoke in favor of the Replat. He indicated they replatted to make the lots conform to something that will be more sellable. The lot on the East has been sold to the chicken restaurant. The R.O.W. dedication has been increased by an additional 15 feet on F.M. 455. Discussion regarding the original plat. Discussion regarding parking and entrance size. Public Hearing closed. 9. Consider and Possible Action Regarding a Replat of Sanger I-35 Industrial Park, Lots 1R-1,1R-2, and 2R-1, block A. Property is Located on F.M. 455 and Acker Street. Polly indicated she did not have any problems with the plat.; however, was concerned about the traffic. Discussion regarding plat. Polly moved to approve the Replat for Sanger I-35 Industrial Park. Joe Falls seconded. Motion carried unanimously. 10. Meeting Adjourned. MEMO June 20, 2002 To: Honorable Mayor, City Council, and Planning and Zoning Fr: Rosalie Chavez, City Secretary/Assistant City Manager Re: Eagle Park, Phase II Attached is the information regarding this request. Please review the plat that was sent with your last packet for this item. MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER Mr. Jack Smith June 10, 2002 City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Eagle Park, Phase 11— Final Plat Lots 1-7, Block A Final Plat Review Dear Mr. Smith: Per your request I have reviewed a Final Plat as prepared and submitted by Isbell Engineering Group, Inc. for the project referenced above. Comments are referencedby the Subdivision Ordinance of the City of Sanger, Texas as adopted September 21,1987, Zoning Ordinance adopted August 3,1987, and Ordinance No. 05-06-01. My review comments are as follows: In general the Final Plat, Preliminary Utility Layout, and Preliminary Drainage -Study comply with City ordinances and with standard engineering practices and principles. Pursuant to Section 19.3.d of the zoning ordinance a solid masonry or wood wall having a minimum height of six (6) feet above the average grade of the residential property shall be constructed adjacent to rear property line adjacent proposed Phase Il Serendipity Place residential subdivision. Detailed site grading plans and utility plans will be required for each lot within the subdivision prior to approval of a building permit. If you have any questions or need any further information, please call me at (940) 3914845. Sinc ely; 40, 2,016 Mark T. Owens, P.E. General Civil Consulting Engineer Cc: Mike Kern — Isbell Engineering Group, Inc. John Porter — PAC Group, LTD P.O. Pox i X MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER Mr. Jack Smith May 30, 2002 City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Eagle Park, Phase lI — Final Plat Lots 1-7, Block A Final Plat Review Dear Mr. Smith: Per your request I have reviewed a Final Plat as prepared and submitted by Isbell Engineering Group, Inc. for the project referenced above. Comments are referenced by the Subdivision Ordinance of the City of Sanger, Texas as adopted September 21, 1987, Zoning Ordinance adopted August 3,1987, and Ordinance No. 05-06-01. My review comments are as follows: General 1. The property is generally located at the southeast corner of the intersection of FM 455 and North Keaton Road within the City of Sanger city limits. Final Plat 1. The arrow pointing to the additional 15 feet of ROW to be dedicated is pointing to the wrong lines. This comment was identified in my last letter but was not addressed. 2. Pursuant to Item 4.04.P of the Subdivision Ordinance, construction plans should show and evaluate all existing and proposed drainage facilities. This comment was identified in my last letter but was not addressed completely. The existing driveway culvert for Lot 1 and the culvert crossing Keaton Road need to be evaluated. 3. According to the ditch profile on Sheet 2 the ditch is going to be re -graded. The stationing of the re -graded ditch needs to be shown. The re -graded portion of the ditch appears to require that the existing driveway culvert in front of Lot 1 be lowered. The lowered culvert is not shown in the profile. I would suggest that a new culvert be placed in front of Lot 1 with standard TxDOT safety end treatments be constructed in accordance with the drainage evaluation. If you have any questions or need any further information, please call me at (940) 3914845. Sincerely; Mark T. Ow , P.E. General Civil Consulting Engineer Cc: Mike Kern — Isbell Engineering Group, Inc. MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER May 21, 2002 Mr. Jack Smith City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Eagle Park, Phase Il — Final Plat Lots 1-7, Block A Final Plat Review Dear Mr. Smith: Per your request I have reviewed a Final Plat as prepared and submitted by Isbell Engineering Group, Inc. for the project referenced above. Comments are referenced by the Subdivision Ordinance of the City of Sanger, Texas as adopted September 21,1987, Zoning Ordinance adopted August 3,1987, and Ordinance No. 05-06-01. My review comments are as follows: General 1. The property is generally located at the southeast corner of the intersection of FM 455 and North Keaton Road within the City of Sanger city limits. Final Plat Y. The typical setback detail shown applies to interior lots only and does not apply to Lots 1 & 7. The detail should be labeled as an interior lot detail only. 2. The arrows pointing to the additional 15 feet of ROW to be dedicated are pointing to the wrong lines. 3. The note stating that a 6' fence will be required has several misspelled words that should be corrected. 4. Pursuant to Item 4.04.I of the Subdivision Ordinance a Lot Grading Plan should be provided. The typical lot grading plan shown does not show sufficient detail to determine if drainage from one lot is adversely impacting adjacent lots. 5. Pursuant to Item 4.04.P of the Subdivision Ordinance construction plans should show and evaluate all existing and proposed drainage facilities such as ditch improvements along FM 455 and all proposed drainage improvements as identified in a detailed drainage study. i> iE'r�En , X 7025 + MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER 6. To provide for future development to the north of FM 455 along Keaton Road, the invert of the manhole located a Station 1+59.71 should be lowered as much as possible while maintaining a minimum flow velocity of 2 fps. If you have any questions or need any further information, please call me at (940) 3914845. Sincerely; Mark T. Owens, P.E. General Civil Consulting Engineer Cc: Mike Kern — Isbell Engineering Group, Inc. rAX. SJ•:1t•1 /.•C�:r.J3 i4U?ii : iP:Yil.lc Rt: MARK T. OwENS, P.E. GENERAL CIVIL CONSULTING ENGINEER April 25, 2002 Mr. Jack Smith City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Eagle Park, Phase II — Final Plat Lots 1-7, Block A 2°d Review Dear Mr. Smith: Per your request I have reviewed a Final Plat as prepared and submitted by Isbell Engineering Group, Inc. for the project referenced above. Comments are referenced by the Subdivision Ordinance of the City of Sanger, Texas as adopted September 21,1987, Zoning • Ordinance adopted August 3,1987, and Ordinance No. 05-06-01. My review comments are as follows: General 1. All comments received from Public Works, Fire Department and Code Enforcement should also be addressed prior to approval of the Final Plat. 2. The property is generally located at the southeast corner of the intersection of FM 455 and North Keaton Road within the City of Sanger city limits. Final Plat 1. The typical setback detail shown applies to interior lots only and does not apply to Lot 1. 2. Pursuant to Section 19.3.d of the zoning ordinance a solid masonry or wood wall having a minimum height of six (6) feet above the average grade of the residential property shall be constructed adjacent to rear property line adjacent proposed Phase 11 Serendipity Place residential subdivision. The wall for Eagle Park Phase 1 and Eagle Park Phase 2 will need to be constructed prior to approval of Eagle Park Phase 2 final plat. 3. Pursuant to Item 4.04.I of the Subdivision Ordinance a Lot Grading Plan should be provided. The typical lot grading plan shown is not sufficient for determining impact on adjacent properties. 4. Pursuant to Item 4.04.P of the Subdivision Ordinance, construction plans should be provided showing ditch improvements along FM 455 and all proposed drainage improvements as identified in a detailed drainage study. The capacities of the existing rn.e:rrti,i:�i,.l,• •. MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER culvert in front of Lot 1 and the culvert crossing Keaton Road need to be evaluated and potentially upgraded 5. Pursuant to Item 4.04Y of the Subdivision Ordinance accurate location, material and approximate size of all mon_ummen_b need to be shown in accordance with section 5.07 (A) of the City's Subdivision Ordinance. If you have any questions or need any further information, please call me at (940) 391-4845. Sincerely, Mark T. Owens, P.E. General Civil Consulting Engineer Cc: Mike Kern — Isbell Engineering Group, Inc. Sn, `' v ?V-rAFR. —; X 76225:1 r Ax. a3 •:7�•til:r`J3 r�.i•nr. ii r..li.4• n.« MARK T. OwENS, P.E. GENERAL CIVIL CONSULTING ENGINEER April 8, 2002 Mr. Jack Smith City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Eagle Park, Phase II — Final Plat Lots 1-7, Block A 1" Review Dear Mr. Smith: Per your request I have reviewed a Final Plat as prepared and submitted by Isbell Engineering Group, Inc. for the project referenced above. Comments are referenced by the Subdivision Ordinance of the City of Sanger, Texas as adopted September 21,1987, Zoning Ordinance adopted August 3,1997, and Ordinance No. 05-06-01. My review comments are as follows: General I. All comments received from Public Works, Fire Department and Code Enforcement should also be addressed prior to approval of the Final Plat. 2. The property is generally located at the southeast corner of the intersection of FM 455 and North Keaton Road within the City of Sanger city limits. Final Plat 1. The typical setback detail shown applies to interior lots only and does not apply to lots adjacent to streets on two sides. The detail should be labeled as an interior lot detail. The 45' side yard building line shown for Lot 1 exceeds City requirements. 2. Pursuant to Section 19.3.d of the zoning ordinance a solid masonry or wood wall having a minimum height of six (6) feet above the average grade of the residential property shall be constructed adjacent to rear property line adjacent proposed Phase H Serendipity Place residential subdivision. 3. Pursuant to Item 4.04.I of the Subdivision Ordinance a Lot Grading Plan should be provided. 4. Pursuant to Item 4.04.P of the Subdivision Ordinance construction plans should be provided showing plan and profile of proposed sewers, proposed water lines, ditch improvements along FM 455, and all proposed drainage improvements as identified in a detailed drainage study. FrJ�iSit n T X rC:itai`. it •vL.4• ••.•r MIRK T. OWENS, R.E. GENERAL CIVIL CONSULTING ENGINEER S. For Lots 7, 2 and 1 it is not clear as to what are building lines and what are public utility easement lines. This needs to be clarified 6. Pursuant to Item 4.04.F of the Subdivision Ordinance accurate location, material and approximate size of all monuments need to be shown in accordance with section 5.07 (A) of the City's Subdivision Ordinance. If you have any questions or need any further information, please call me at (940) 3914845. ASierely; Mark T. Owens, P.E. General Civil Consulting Engineer Cc: Mike Kern — Isbell Engineering Group, Inc. P.nc . nox !`GiP f --i0FR 't X 713?5 i •'�r::c. S�.:ti»74•G�S��� MEMO June 20, 2002 To: Honorable Mayor, City Council, and Planning and Zoning Fr: Rosalie Chavez, City Secretary/Assistant City Manager Re: Quail Run Attached is the information regarding this request. Please review the plat that was sent with your last packet for this item. MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER June 10, 2002 Mr. Jack Smith City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Quail Run — Preliminary Plat, Preliminary Utility Layout, and Preliminary Drainage Study 380 Residential Lots Sanger, Texas Final Review Dear Mr. Smith: Per your request I have completed a final review of a Preliminary Plat, Preliminary Utility Layout, and Preliminary Drainage Study as prepared and submitted by Crannel,.Crannel & Martin Engineering for the project referenced above. My review comments are as follows: In accordance with the current City's Park Ordinance a total of 7.60 acres of park space is required. The plat shows a total of 9.40 acres if the City allows the developer to utilize detention pond area as park space. This would be acceptable under the condition that the detention ponds is designed to minimize water depth and facilitate access to adjacent park space. In general the Preliminary Plat, Preliminary Utility Layout, and Preliminary Drainage Study complies with City ordinances and with standard engineering practices and principles. Before approval of the final plat for any phase of the project by Town Council, I would recommend that an evaluation of the capacity of lift station, forcemain and existing downstream sewer be evaluated relative to the potential impacts this project will have and to insure capacity to service this subdivision. If you have any questions or need any further information, please call me at (940) 3914845. Sincerely; ark T. Owens, P.E. General Civil Consulting Engineer Cc: Jeff Crannel — Crannel, Crannel & Martin Engineering X 7-13l:5:*1) Crannell, Crannell & Martin 9127 KING ARTHUR DRIVE • DALLAS, TEXAS 75247 (214) 630-SM • FAX (214) 630.8110 June 6, 2002 Mr. Mark Owens, P.E. City Engineer City of Sanger Hand delivery to City of Sanger Mr. Jack Lewis, City Manager City of Sanger P.O. Box 1729 Sanger, Texas 76266 Ref: Quail Run Addition Preliminary Plat P Review Dear Mark, Our office received your comments dated May 29, 2002 on June 4, 2002. We revised the drawings as follows: General 1. No changes required 2. No changes required Preliminary Plat 1. No changes required. 2. Our detention pond is designed for 3' of water depth. There is a 1.3' freeboard from the proposed 100 year water surface elevation to the top of spillway. We could reduce or increase the freeboard if necessary. 3. Lot 19, Block C was adjusted to be 60' wide. 4. We have located the water lines approximately on the drawing and dimensioned to the property line. We will need to excavate and exactly locate the lines during final engineering plan preparation. We will reduce the 30' wide easement once the lines are visually located. 5. The requested note was added to the plan. 6. The heavy dashed line on Lot 29, Block N has been removed. A drainage line into the detention pond is proposed in this location. 7. Utility easements are now shown all on one lot. Some lot widths were adjusted to account for the loss of side yard. Mr. Mark Owens Mr. Jack Lewis June 6, 2002 Page Two Preliminary Utility Layout 1. We will prepare a study on the existing sanitary sewer lift station. We would prefer to make this study at the time of final engineering plan preparation. The developer will agree to upgrade the existing lift station, upgrade the existing force main if necessary. The developer will also agree to construct a lift station within this development and, if possible, extend the force main to the east under the railroad track thereby bypassing the existing lift station. - 2. Water line dimensioned to the property line as measured from above ground evidence. Preliminary Drainage Plan 1. Line weights adjusted to provide clarity. Phase line removed from the plan. 2. Offshe drainage area map revised to show USGS contours. I Drainage table on the plan shows each drainage subarea, time of concentration, Q 100, etc. The pre -developed flow as compared to the post -developed flow is shown on the attached "Detention Pond Design" sheet. 4. Detention pond sizing information shown on the attached "Detention Pond Design" sheet. The revised drawings should address all of your comments. Please review and contact this office with any questions or other revisions. We would request that the Preliminary Plat be placed on the next P&Z agenda. Sincerely, Jeff D. Crannell, P.E. Pres., Crannell Engineering DETENTION POND DESIGN (100yr.Storm) PRESENT CONDITIONS C 0.35 C1XA 1.00 i 100 7.60 Tc 2700 Area (ac) 68.00 Q100 1 180.88 FUTURE CONDITIONS C 0.50 C1XA 1.00 i 100 7.60 Tc 15.00 Area (ac) 80.40 0 100 305.52 STORM DURATIONS Minutes 1100 0100 cfs 20 7.60 305.52 30 6.00 241.20 40 5.20 209.04 50 4.60 184.92 60 4.20 168.84 70 3.80 152.76 80 3.50 140.70 90 3.20 128.64 MAXIMUM STORAGE 15 min. -Storm Inflow 15 305.52 60 = 274,968.00 CF Outflow 0.5 30 180.88 60 = 162.792.00 CF Storage = 112,176.00 CF 20 min. Storm Inflow 20 305.52 60 = 366.624.00 CF Outflow 0.5 35 180-881 60 = 189,924.00 CF Storage = 176,700.00 CF 30 min. Storm Inflow 30 241.20 60 = 434.160.00 CF Outflow 0.5 45 180.88 60 = 244,188.00 CF Storage = 189,972.00 CF 40 min. Storm Inflow 40 209.04 60 = 501,696.00 CF Outflow 0.5 55 180.881 60 = 298,452.00 CF Storage 1 203,244.00 CF 50 min. Storm Inflow 50 184.92 601 554,760.00 CF Outflow 0.5 65 180.881 60 = 352,716.00 CF Storage 1 202,044.00 CF 60 min. Storm Inflow 60 168.84 601 607,824.00 CF Outflow 0.51 75 180-881 60 = 406.980.00 CF Stom e I 200,844.00 CF 70 min. Storm Inflow 701 152.76 60 = 641.592.00 CF Outflow 0.51 85 180.88 60 = 461,244.00 CF Stor e I I= 180,348.00 CF 80 min. Storm Inflow 80 140.70 60 = 675.360.00 CF Outflow 0.6 95 180.88 60 = CF Storage = CF 90 min. Storm Inflow 90 128.64 60 = W124,884.00 CF Outflow 0.5 105 180.88 60 = CF Stor e = CF MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER May 29, 2002 Mr. Jack Smith City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Quail Run — Preliminary Plat 380 Residential Lots Sanger, Texas 1" Review Dear Mr. Smith: Per your request I have completed a first review of a Preliminary Plat, Preliminary Utility Layout, and Preliminary Drainage Study as prepared and submitted by Crannel, Crannel & Martin Engineering for the project referenced above. As you may recall a preliminary plat with the same name was previously submitted and brought before council by a different devloper for the same piece of property. The previous plat was never approved be cause the developer withdrew it because the City was not going to grant a variance for 5' sideyard setbacks. My review comments are as follows: General 1. It is my understanding that the original zoning classification for this property before the current zoning ordinance was adopted was SF-3 or 6,000 square foot lots and that after the new ordinance was adopted this property retained a 6,000 square foot lot zoning designation which equates to the current zoning classification of SF-8 with a minimum lot area of 6,000 square feet. Consequently the lot sizes shown in this plat are in conformance with the ordinance. 2. In accordance with the current City's Park Ordinance a total of 7.60 acres of park spac is required. The plat shows a total of 9.40 acres if the City allows the developer to utilize detention pond area as park space under the condition that the detention ponds is designed to minimize water depth and facilitate access to adjacent park space. Preliminary Plat 1. Contrary to the previous plat 8' sideyard setbacks are provided. 2. The drainage plan indicates that the detention pond is a little over 7 feet contrary to what is shown on the plat. MARK T. OWENS, P.E. GENERAL CIVIL CONSULTING ENGINEER 3. The frontage at the building line should be a minimum of 60 feet. Lot 19 Block C appears not to meet this requirement. 4. A 30-foot permanent easement is shown along the north side of Block A I realize that there are two (2) existing water lines (12" Upper Trinity feed line and 12" city line) located somewhere close to or within the proposed easement. The plat should show the location of these two (2) lines to verify that the proposed easement will accommodate future maintenance of these lines. A 30-foot easement may or may not be required 5. A note should be placed on the plat stating that the 20' ingresslegress easement will be abandoned when Quail Crossing and Primrose Drives are constructed. 6. There is heavy dashed line along the south side of Lot 29 Block N that has not been defined and which needs to be defined. 7. Three 15-foot utility easements are shown crossing Block G. Utility easements cannot be split onto two lots and should be contained entirely within one lot. Apparently these easement are to be used for drainage purposes. Preliminary Utility Layout 1. Before approval of the preliminary plat by Town Council, I would recommend that an evaluation of the capacity of lift station, forcemain and existing downstream sewer be evaluated relative to the potential impacts this project will have and to insure capacity to service this subdivision. I see no problem sending the plat to planning and zoning for their review but prior to placing this plat on the Town Council agenda, I would require that the impact study be completed per Eddy's and my satisfaction. 2. As previously stated the 12" waterlines should be accurately shown.'There is a 7' dimension shown but it is difficult to determine what the dimension is referring to. Preliminary Drainage Study 1. It hard to differentiate between phase lines and drainage area delineation lines. It help my evaluation if this could be clarified. 2. An offsite drainage area map is shown. The offsite drainage area should be shown to scale at a much larger scale than shown. It should also show at least USGS contour intervals with drainage area delineations to assist in evaluating the drainage calculations. 3. A table showing drainage calculations is provided. It should show the time of concentration utilized in the calculations. It should also show a comparison of pre - development and post development stormwater flow projections. �. :9 E. :�''' .cat ::�•=Ci i:. MARK T. OWENS, P.E. %=F -NERAL CIVIL CONSULTING ENGINEER 4. All calculations should be shown for sizing the proposed detention pond A Q in and Q out are shown but not how the flows were derived. If you have any questions or need any further information, please call me at (940) 391-4845. Sincerely, Mark T. Owens, P.E. General Civil Consulting Engineer Cc: Jeff Crannel — Crannel, Crannel & Martin Engineering MEMO June 20, 2002 To: Honorable Mayor, City Council, and Planning and Zoning Fr: Rosalie Chavez, City Secretary/Assistant City Manager Re: Fallmeadows Attached is the information regarding this plat. The Engineer has indicated the plat conforms with all City ordinances. This is in our E.T.J. A copy of both the Preliminary and Final Plat are in with your packet. MARK T. OwENs, P.E. GENERAL CIVIL CONSULTING ENGINEER June 11, 2002 Mr. Jack Smith City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Fallmeadow Phase II & III — Preliminary Plat & Construction Details 37 Residential Lots Sanger ETJ Final Review Dear Mr. Smith: Per your request I have finished a final review of the Preliminary Plat and Construction Details as prepared and submitted by Isbell Engineering Group, Inc. for the project referenced above. Comments are referenced by the Subdivision Ordinance of the City of Sanger, Texas as adopted September 2 f1987, Zoning Ordinance adopted August 3,1987, and Ordinance No. 05-06-01. My review comments are as follows: General 1. The property is generally located north of Fr 455 and west of Union Hill Road in the eastern portion of the City's ETJ. Preliminary Plat, Final Plat and Construction Details 1. In general the Preliminary Plat, Final Plat and Construction Details comply with City ordinances and with standard engineering practices and principles. I would recommend approval of the proposed subdivision to County. ifyou have any questions or need any further information, please call me at (940) 391-4845. Sincerely; Mark T. Owens, P.E. General Civil Consulting Engineer Cc: Lee Allison, P.E. — Isbell Engineering Group, Inc. P.O. Box 596 Po-.,4DER, i X 7625f) P?aOiq .. 940--39 14845 FAX: 9 '.O-4 7!�✓J593 rnuurt �liitgiide. rrt MARK T. O'yj1ENS, P.E. GzMERAL CIVIL CONsuLTING ENGINEER April 18, 2002 Mr. Jack Smith City of Sanger P.O. Box 1729 Sanger, Texas 76266 Re: Fallmeadow Phase II & III — Preliminary Plat & Construction Details 37 Residential Lots Sanger ETJ 2°d Review Dear W. Smith: Per your request I have finished a second review of the Preliminary Plat and Construction Details as prepared and submitted by Isbell Engineering Group, Inc. for the project referenced above. Comments are referenced by the Subdivision Ordinance of the City of Sanger, Texas as adopted September 21, 1987, Zoning Ordinance adopted August 3, 1987, and Ordinance No. 05-06-01. My review comments are as follows: General 1. The property is generally located north of FM 455 and west of Union Hill Road in the eastern portion of the City's ETJ. Preliminary Plat 1. Scale of Vicinity Map should be 1" = 2000'. The vicinity map should show an area of at least 1 mile in each direction from the project. The word "VICINITY" is misspelled. This was not addressed from my previous letter 2. The plat shows contours but the elevations are not legible. 3. The existing ROW lines for Fallmeadow Drive through Phase I need to shown. 4. Dimensions are shown for the detention area in the north part of Lot 45 but I do not see where this area is called out as a drainage easement. The whole detention area should be shown as a drainage easement. 5. There is a building line call out and a drainage utility easement call out that need to be removed from the southwest comer of Lot 45. P.O. Box 596 PONDER, TX 7021i9 ProNF' �>40-39 i -48 5 FAX: 9 --10 479.0593 mdinixoJI�g6de.net MARK T. OwEHs, P.E. GENERAL CIVIL CONSULTING ENGINEER Construction Details Sheet 12 - Sizing calculations have been provided and it is not clear from the calculations if the "North" detention basin includes both basins on each side of Fallmeadow Drive. According to the calculations, the calculated discharge flows exceed the total allowable discharge flows for the 50, 25,10, 5 and 2-year storm events which does meet Denton County's requirement of zero impact. Sheet 14 — Initially channels were utilized at the back of the lots to direct flow to the stormwater detention basins. This has changed by removing the channels and replacing them with berms. From the drawing it is not clear how the flow will transition from the berm into the channel. The berm should have some type of rock riprap applied to the area of the berm subjected to captured flows entering into the basin from the area upstream of the berms. If you have any questions or need any further information, please call me at (940) 391-4845. Sincerely; Mark T. Owens, P.E. General Civil Consulting Engineer Cc: Lee Allison, P.E. — Isbell Engineering Group, Inc. P.O. Box 596 PONDER, TX 76259 PHONE:: 910—. 91.48!5 FAX 9 40-475*U593 mu:ni i%tghtle.net