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1972-026ORDINANCE NO. 72 °d ip AN ORDINANCE PROVIDING FOR STORM WATER DETENTION WHEREAS it is recognized, that the receiving streams and storm sewers within the area of the Village of Buffalo Grove do not have the capacity.to receive and convey the in- creased storm water runoff resulting from rapid urbanization i occurring in the Village and adjacent areas; that these re- ceiving streams and storm sewers are subject to frequent flood - ing which results in a growing rate of property damage; that it is necessary that detention storage of storm water be pro- vided to eliminate the excessive storm water runoff caused by the reduction or elimination of previous land surfaces through the construction of buildings, parking lots, streets and other improvements to real estate. NOW THEREFORE BE IT ORDAINED BY THE PRESIDENT AND BOARD OF TRUSTEES OF THE VILLAGE OF BUFFALO GROVE, LAKE AND COOK COUNTIES, ILLINOIS <. SECTION 1: Notwithstanding the provisions of the Building Ordinance to the contrary, no building permit will be issued unless the applicant provides on -site detention of storm water runoff or participates in the provision of a a Village approved regional detention facility as set forth in the following criteria: (a) A combination of storage and controlled release of storm water runoff is required for all residential developments exceeding 5 acres in area, for all residential develop- ments of less than 5 acres which have an impervious area of 50 percent or greater, for all - non - residential devel- opments exceeding 2 acres in area and for all non-resi- dential developments of less than 2 acres which have an _impervious area of 50 percent or greater. However, a residential development of 5 acres or less and a non- residential development of 2 acres or less must have an adequate outlet as signified by the Village Engineer. If the outlet is not adequate, then detention, as deter- mined by the Village Engineer, will be required to store that portion of the runoff exceeding the outlet capacity. (b). The release rate of storm water from all developments requiring detention shall not exceed the storm water runoff rate from the area in its natural undeveloped state. i. Because of the flat conditions of the land in this area, channel configurations cut by nature are gen- erally unable to handle the runoff from high inten- sity rainfalls and results in flood plain storage or spreading of runoff over the land areas during the larger storm periods. In order not to increase the runoff from such areas after development, the release rate must be limited to carrying capacity of these natural channels. it. The Village will accept the release rate of not greater than that calculated from a storm of two (2) year frequency with a runoff rate coefficient of 0.15, unless the applicant can show by his detail calculations, which are acceptable by the Village that the discharge rate of the natural outlet channel serving the area is greater. (c) Drainage systems shall have adequate capacity to bypass through the development the flow from all upstream area for a storm of design frequency assuming that the land is in a fully developed state under present zoning or zoning proposed -under a Comprehensive Plan. The bypass flow rate shall be computed utilizing a runoff coefficient of not less than 0.35. An allowance will be made for upstream detention when such upstream detention and release rate has previously been approved by the Village and evidence of its construction can be shown. (d) The detention volume required shall be that necessary to handle the runoff of a one hundred (100) year rainfall, for any and all durations, from the fully developed drain- age area tributary to the reservoir less that volume dis- charged during the same duration at the approved release rate. The live detention storage to be provided shall be + calculated on the basis of the one hundred (100) year and two (2) year frequency rainfalls as published by the U. S. Weather Bureau for the Chicago area. (e) Detention facilities for developments within the Cook _ County portion of the Village shall be subject to the ap- proval of the Metropolitan Sanitary District of Greater • Chicago. Detention facilities for developments within the Lake County portion of the Village shall be subject to the approval of the Lake County Department of Public Works. All detention facilities within the Village of Buffalo Grove are subject to the approval of the Village Engineer and the Village Board of Trustees. (f) Designs for fencing, embankment slopes, depth of permanent pools, protection of inlets and outlets, screenings, physi- cal shape and appearance shall be as determined and approved by the Village Engineer. •,• SECTION 2. This Ordinance shall be in full force and effect from and after its passage and approval. e 2 { LEGAL NOTICE On August 14, 1972, at a meeting of the (President and Board of Trustees of the Village of Buffalo Grove., the following two Ordinances were adopted: - Ordinance #0- 72 -26, an ordinance providing for storm water detention Ordinance #0- 72 -36, an ordinance providing for a Municipal Collector These Ordinances are available in pamphlet form at the Village Clerk's office, 50 Raupp Boulevard. -Verna L. Clayton Village Clerk Leval Notice On August 14, 1972. at a meeting of the President and Board . of Trustees of the Village of Buffalo ' Grove, the following. tvro .ordinances wee adopted: Ordinance No. 0.72.26. an.' ordi. nance providing far storm .water detention Ordinance Nn, t1. 72-36. an ordi- nance Providing for Municipal Collector These Ordinances are available in Pamphlet form at the Village Clerks office. 50 Raupp Boulevard. VERNA L. CLAYTON Village Clerk - .. - Published in The xFerald,of B.I. 410 Grove Aug. 24. 19!11 / Legal Notice On August". ugust 14 1972, at a meeting 01 the President and Board o: Trustees of the Village of Buffalo Grove. the following two Ordinance; were adopted: Ordinance No. 0- 72-26, an ordk• r nance providing fir storm water detention Ordinance No. 9- 72-36. an ordi• nance providing for a Municipal Collector These Ordinances are available in Pamphlet form at the Village Clerk's office. 50 Raupp Boulevard. VERNAL. CLAYTON Village Clerk Published in The Herald of Buf. fslo Grove Aug. 24, 1972: - CEttYiFICAiE OF PUBLICATION PADDOCK PUBLICATIONS, INC. A Corporation organized and eiCsting under and by virtue of the laws of the State of Illinois, DOES HEREBY CERTIFY That it is the publisher of Buffalo Grove Herald That said Buffalo Grove herald is a; secular - newspaper and has been published daily in the Village of Buffalo Grove , County of Cook and State of Illinois, continuously for more than one year prior to, on and since the date of the first publication of the notice hereinafter referred to and is of gen- eral circulation throughout said Village, County and State. I further certify that Buffaloy Grove herald is a newspaper as defined in "an Act to revise the law in relation to notices as amended by Act approved July 17, .1959 --111. Revised. Statutes, Chap. 100, Para. 1 and 5. That a notice of which the annexed printed slip is a true copy, was published in said Buffalo Grove Herald on the th day Of. August A.D. 191-2— IN WITNESS WHEREOF, the undersigned, the said PADDOCK PUBLTCA TIONS, Inc., has caused this certificate to be signed and its corporate seal affix- ed hereto, by MARGIE FLANDERS, its Treasurer, at Arlington Heights, Illinoi.;, 24th, of August A.D. 1972 _ PADDOCK PUBLICATIONS, :INC. By • Treasurer. I �� .= • • titer . • .,•�� , ORDINANCE NO. 72 -01 AN ORDINANCE PROVIDING FOR STORM WATER DETENTION ' WHEREAS it is recognized, that the receiving streams �. and storm sewers within the area of the Village of Buffalo` • Grove do not have the capacity to receive and convey the in- creased storm water runoff resulting from rapid urbanization occurring in the Village and adjacent areas; that these re- ceiving streams and storm sewers are subject to frequent flocd ing which results in a growing rate of property damage; that it is necessary that detention storage of storm water be pro - vided to eliminate the excessive storm water runoff caused by the reduction or elimination of previous land surfaces through the construction of buildings, parking lots, streets and other improvements to real estate. NOW THEREFORE BE IT ORDAINED BY THE PRESIDENT AND BOARD OF TRUSTEES OF THE VILLAGE OF BUFFALO GROVE, LAKE AND COOK COUNTIES, ILLINOIS SECTION 1: Notwithstanding the provisions of the Building Ordinance to the contrary, no building permit will be issued unless the applicant provides on -site detention of storm water runoff or participates in the provision of a a Village approved regional detention facility as set forth in the following criteria: (a) A combination of storage and controlled release of storm water runoff is required for all residential developments exceeding 5 acres in area, for all residential develop - ments of less than 5 acres which have an impervious area of 50 percent or greater, for all non - residential devel- opments exceeding 2 acres in area and for all non -resi- dential developments of less than 2 acres which have an impervious area of 50 percent or greater. However, a residential development of 5 acres or less and a non- residential development of 2 acres or less must have an adequate outlet as signified by the Village Engineer. If the outlet is not adequate, then detention, as deter- mined by the Village Engineer, will be required to store that portion of the runoff exceeding the outlet capacity. (b) The release rate of storm water from all developments requiring detention shall not exceed the storm water runoff rate from the area in its natural undeveloped ,• state. i. Because of the flat conditions of the land in this area, channel configurations cut by nature are gen- erally unable to handle the runoff from high inten- sity rainfalls and results in flood plain storage or spreading of runoff over the land areas during the larger storm periods. In order not to increase the runoff from such areas after development, the release rate must be limited to carrying capacity- of these natural channels. ii. The Village will accept the release rate of not greater than that calculated from a storm of two (2) year frequency with a runoff rate coefficient of 0.15, unless the applicant can show by his detail calculations, which "are acceptable by the Village that the discharge rate of the natural outlet channel serving the area is greater. (c) Drainage systems shall have adequate capacity to bypass through the development the flow from all upstream area for a storm of design frequency assuming that the land is in a fully developed state under present zoning or zoning proposed under a Comprehensive Plan. The bypass flow rate shall be computed utilizing a runoff coefficient of not less than 0.35. An allowance will be made for upstream detention when such upstream detention and release rate has previously been approved by the Village and evidence of its construction can be shown. ° (d) The detention volume required shall be that necessary to handle the runoff of a one hundred (100) year rainfall, for any and all durations, from the fully developed drain - age area tributary to the reservoir less that volume dis- charged during the same duration at the approved release rate. The live detention storage to be provided shall be + calculated on the basis of the one hundred (100) year and two (2) year frequency rainfalls as published by the U. S. Weather Bureau for the Chicago area. (e) Detention facilities for developments within the Cook County portion of the Village shall be subject to the ap- proval of the Metropolitan Sanitary District of Greater ° Chicago. Detention facilities for developments within the Lake County portion of the Village shall be subject to the approval of the Lake County Department of Public Works. ' All detention facilities within the Village of Buffalo Grove are subject to the approval of the Village -Engineer and the Village Board of Trustees. (f) Designs for fencing, embankment slopes, depth of permanent pools, protection of inlets and outlets, screenings, physi- cal shape and appearance shall be as determined and approved by the Village Engineer. °,. SECTION 2. This Ordinance shall be in full force and effect from and after its passage and approval. <2_ r LEGAL NOTICE On August 14, 1972, at a meeting of.the President and Board of Trustees of the Village of Buffalo Grove, the following two Ordinances were adopted: Ordinance #0- 72 -26, an ordinance providing for storm water detention Ordinance #0- 72 -36, an ordinance providing for a Municipal Collector These Ordinances are available in pamphlet form at the Village Clerk's office, 50 Raupp Boulevard. -Verna L. Clayton Village Clerk r Legate Notice Of On �eugust 14, 1972. at a meeting Trustees ofe the nVillage o o8uff�lO e e a the following tyro Ordinances We a adopted: �rdinance NO. 0- 72-29 . an ordl- nance providing f)r storm _water detention Ordinance No. 0 -72 _36, an' Ord, - Collectorrviding for Municipal These Ordinances are available in Pamphlet form at - the Village Clerics office, 50 P.aupp Boulevard. VZPLNA L. CLAYTON Village Clerk - - Published in The Herald . of Buf. Palo Grove Aug. 24, 1972. n- Legal ,Notice On August "14; 1972, at a meetir o! the President and Board Trustees of the Villa .le of Buffa: Grove, the following h90 Ordinance were adopted: Ordinance No. 0.72 -26, an Ord nance providing f)r storm Ovate detention Ordinance No. 0- 72-36, an Ord: nance providing for a Municips Collector These Ordinances are available ii Pamphlet form at the Villag Clerk's office, 50 Raupp Boulevard. VERNA.L. CLAYTON Village Clerk Published ,in. The 'Ierald of Buf talo Grove Aug. 24, 1972: CERTIFICATE OF PUBLICATION PADDOCK PUBLICATIONS, INC. A Corporation organized and existing under and by virtue of the laws of the State , of Illinois, DOES HEREBY CERTIFY That it. is the publisher of Buffalo Grove Herald That said Buffalo Grove Herald is a secular newspaper and has been published daily in the Village of Buffalo Grove , County of Cook and State of Illinois, continuously for more than one year prior to, on and since the date of the first publication of the notice hereinafter referred to and is of gen end circulation throughout said Village, County and State. I further certify that Buffalo Grove Herald is a newspaper as defined in "an Act to revise the law in relation to notices" as amended by Act approved July 17, ,1959 --IIL Revised Statutes, Chap. 1.00, Para. 1 and 5. That a notice of which the annexed printed slip is a true copy, was published in said Buffalo Grove Herald on the 24th day of August A.D. 19 L2_ IN WITNESS WfIEREOF, the undersigned, the said PADDOCK PUBLICA- TIONS, Ium, has caused this certificate to be signed and its corporate seal affix- ed hereto, by MARGIE FLANDERS, its Treasurer, at Arlington Heights, Illinois, #fits 24th day of August , A.D. 1972 PADDOCK PUBLICATIONS, INC. A Wn M 121) BY Treasurer, i ORDINANCE NO. 72 AN ORDINANCE PROVIDING FOR STORM WATER DETENTION I WHEREAS it is recognized, that the receiving streams and storm sewers within the area of the Village of Buffalo Grove do not have the capacity to receive and convey the in • creased storm water runoff resulting from rapid urbanization I occurring in the Village and adjacent areas; that these re- ceiving streams and storm sewers are subject to frequent flood- ing which results in a growing rate of property damage; that it is necessary that detention storage of storm water be pro- vided to eliminate the excessive storm water runoff caused by the reduction or elimination of previous land surfaces through the construction of building:, parking lots, streets and other improvements to real estate. NOW THEREFORE BE IT ORDAINED BY THE PRESIDENT AND BOARD OF TRUSTEES OF THE VILLAGE OF BUFFALO GROVE, LAKE AND COOK COUNTIES, ILLINOIS SECTION 1: Notwithstanding the provisions of the Building Ordinance to the contrary, no building permit will be issued unless the applicant provides on -site detention . of storm water runoff or participates in the provision of a a Village approved regional detention facility as forth in the following criteria: (a) 'A combination of storage and controlled release of storm water runoff is required for all residential developments ° exceeding 5 acres in area, for all residential develop - ments of less than 5 acres which have an impervious area of 50 percent or greater, for all non- residential devel- opments exceeding 2 acres in area and for all non-resi- dential developments of less than 2 acres which have an impervious area of 50 percent or greater. However, a residential development of 5 acres or less and a non - residential development of 2 acres or less must have an adequate outlet as signified by the Village Engineer. If the outlet is not adequate, then detention, as deter - mined by the Village Engineer, will be required to store that portion of the runoff exceeding the outlet capacity. (b) The release rate of storm water from all developments requiring detention shall not exceed the storm water runoff rate from the area in its natural undeveloped state. • Because of the flat conditions of the land in this area, channel configurations cut by nature are gen- erally unable to handle the runoff from high inten- sity rainfalls and results in flood plain storage or spreading of runoEf over the land areas during the larger storm periods. In order not to increase the runoff from such areas after development, the release rate must be limited to carrying capacity of these natural channels. ii. The Village will accept the release rate of not greater than that calculated from a storm of two (2) year frequency with a runoff rate coefficient of 0.15, unless the applicant can show by his detail calculations, which are acceptable by the Village that the discharge rate of the natural outlet channel serving the area is greater. (c) Drainage systems shall have adequate capacity to bypass through the development the flow from all upstream area for a storm of design frequency assuming that the land is in a fully developed state under present zoning or zoning proposed under a Comprehensive Plan. The bypass flow rate shall be computed utilizing a runoff coefficient of not less than 0.35. An allowance will be made for upstream detention when such upstream detention and release rate has previously been approved by the Village and evidence of its construction can be shown. (d) The detention volume required shall be that necessary to handle the runoff of a one hundred (100) year rainfall, for any and all durations, from the fully developed drain - age area tributary to the reservoir less that volume dis- charged during the same duration at the approved release rate. The live detention storage to be provided shall be calculated on the basis of the one hundred (100) year and two (2) year frequency rainfalls as published by the U. S. Weather Bureau for the Chicago area. (e) Detention facilities for developments within the Cook County portion of the Village shall be subject to the ap- proval of the Metropolitan Sanitary District of Greater Chicago. Detention facilities for developments within the Lake County portion of the Village shall be subject to the approval of the Lake County Department of Public Works. All detention facilities within the Village of Buffalo Grove are subject to the approval of the Village Engineer and the Village Board of Trustees_ (f) Designs for fencing, embankment slopes, depth of permanent pools, protection of inlets and outlets, screenings, physi- cal shape and appearance shall be as determined and approved by the Village Engineer. SECTION 2. This Ordinance shall be in full - force and effect from and after its passage and approval. - 2 r LEGAL NOTICE On August 14, 1972, at a meeting of the President and Board of Trustees of the Village of Buffalo Grove, the following two Ordinances were adopted: Ordinance 40- 72 -26, an ordinance providing for storm water detention Ordinance #0- 72 -36, an ordinance ° providing for a Municipal Collector These Ordinances are available in pamphlet -form at the Village Clerk's office, 50 Raupp Boulevard. Verna L. Clayton Village Clerk tlebal Notice F . On August 14 Of the , 1972, at a meeting I 1 President and Board . of ; Trustees of the Village of Buffpla Grove, the following: tyro Ordinances wefe adopted: Ordinance No. 0- 72-26 . an ordt- dance providing fir storm _water CERTIFICATE OF PUBLICATION detention Ordinance Nn. l T2 38; an' ordl- IIBnce Providing fora Municipal collector These Ordinances are available in PADDOCK PUBLICATIONS, INC. PamDhlet form at - the Village Cletls's office, 50 Raupp Boulevard. A Corporation organized and existing under and VERNA L. CLAYTON by virtue of the laws of the Publish Id in The xFerald . of 'Buf- State of Illinois, DOES HEREBY CERTIFY That it is the publisher Paco Grove Aug. 24. 1972. c- of Buffalo Grove Herald Legal'Notice� That said Buffalo Grove Herald is a secllIar. On August'14: 1x72; at a meeting newspaper and has been published daily in the Village of of the President and Board of Trustees of the Villa .le of Buffalo Grove, the following ttro Ordinances Buffalo Grove were adopted: County Of Cool{ Ordinance vid a72-2s, an oral- and State of Illinois, continuously for mote than one year prior t0, on and since dance providing fir storm water detention Ordinance No. 9- 72-36, an oral- the date Of the first publication of the notice hereinafter referred to and is of gen nance providing for a Municipal Collector These Ordinances are available in eral circulation throughout said Village, County and State, Pamphlet form at the Village Clerk's office, 50 Raupp Boulevard. I further certify that Bjiff'alor GrOVB Herald VERNA L. CLAYTON Published Village n The Herald of But newspaper as defined in an Act to revise the law in relation to notices" as is a new « falo Grove Aug. 24, 1872 ,.._ amended - by Act approved July 17,',1959—ill. Revised Statutes, Chap. 100, Para. 1 and 5. That a notice of which the annexed printed slip is a true copy, was published in said Buffalo Grove Herald on the - 24th day of August A.D. 19 ?2 IN WITNESS WHEREOF, the undersigned, the said PADDOCK PUBLICA- TIONS, Inc., has caused this certificate to be signed and its corporate seal amx- ed hereto, by MARGIE FLANDERS, its Treasurer, at Arlington Heights, Mnoia, this -24th day of August A.D. i9?? PADDOCK PUBLICATIONS, INC. Y Treasurer. ;•eb"al Notice On uSust 14. 19;2 at g fieetine of -ihe President and Board . of Trustees of the Villa.-e of Buffalo Grove, the following, to o Ordinances ,adopted: rdinance No. 0.72.26, an ordl- detention�idmg Y�r storm .water Ordinance No 7 -7236. an ordi- oU�cto roviding fora Municipal ':These - Ordinances are available in DemDhlet form at the Village R, Clerics office. -50 _p_upp Boulevard. VEVA 1. CLAYTON 'V'Baxe Clerk PUblished in The ?ieraid of Buf. aio Grove Aug. 24. 1972. . gal Notice On If the President 7 at tl nd Board( Trustees of the Village of Buffal Grove, the following tvlo Ordinance were adopted: Ordinance No. 0- 72-26, an ordi -nance providing f)r storm Ovate: detention Ordinance No. 9- 72-36 . an ordi nanoe providing for a Municipa Collector �Tbese Ordinances are available it •pamphlet form at the Village Clerk's office, 50 Raupp Boulevard. VERNA L. r_LAyTON Village Clerk Published in The Herald of Buf- ralo Grove Aug. 21, 1972: - RTlFICATB OF PUBLlCATlON PADDOCK PUBLICATIONS, IN,-C. :A 'Corporation 'O rgani and existing under and by virtue of the'�laws -of the State of Illinois, DOES HEREBY CERTIFY That it is - the - ,pnblasber -vf Buffalo Grove Herald 'That said Buffalo Crowe herald Q asecular MewspaPer and has < been published daily in the .V,-Uage :off Buffalo Grove Cotmty •of Cook and State of Illinois, . continuously #or_more than one year prior to, -on and since A `dateof Lire first publication of the notice hereinafter- ?Werred to and is-()( "$� . -erg - circulation `throughout -saki VMage, 'County and ,.State. -I lurther certify that Buffalos Grove Herald is :a newspaper as defined in "an Act to revise the law in relation tomotices" as ,,amended by _Act approved July 17, :1959 -]3L Revised .'Statutes, Chap. 100, XAM 1 -.and B. 1bat a .notice of which the annexed printed slip is a true vopy, was published in mid Buffalo Grove Herald ------ ___._3 ors the 2�:th A _ - tiny of ugus4, A.D. 19 :2 WITNESS WHEREOF, the undersigned, °.the said PADDOCK 'PUBLiCA -- TIONS, Inc., has caused this certificate to be signed and its corporate seal a$s ed :hereto, by,MARGIE FLANDERS, its Treasurer, at Arlington. Heights, minoik hb 2ltth day at August � I97� 'ADDOCK PUBLICATIONS, 3NC. _ Measurer. ORDINANCE NO. 72 AN ORDINANCE PROVIDING FOR STORM WATER DETENTION i WHEREAS it is recognized, that the receiving streams and storm sewers within the area of the Village of Buffalo Grove do not have the capacity to receive and convey the in- i creased storm water runoff resulting from rapid urbanization occurring in the Village and adjacent areas; that these re- ceiving streams and storm sewers are subject to frequent flood - ing which results in a growing rate of property damage; that it is necessary that detention storage of storm water be pro - vided to eliminate the excessive storm water runoff caused by the reduction or elimination of previous land surfaces through the construction of buildings, parking lots, streets and other improvements to real estate. NOW THEREFORE BE IT ORDAINED BY THE PRESIDENT AND BOARD OF TRUSTEES OF THE VILLAGE OF BUFFALO' GROVE, LAKE AND COOK COUNTIES, ILLINOIS SECTION 1: Notwithstanding the provisions of the Building Ordinance to the contrary, no building permit will be issued unless the applicant provides on -site detention of storm water runoff or participates in the provision of a a Village approved regional detention facility as set forth i.n the following criteria: (a) A combination of storage and controlled release of storm water runoff is required for all residential developments exceeding 5 acres in area, for all residential develop-' ments of less than 5 acres which have an impervious_ area of 50 percent or greater, for all non- residential devel- opments exceeding 2 acres in area and for all non-resi- dential developments of less than 2 acres which have an impervious area of 50 percent or greater. However, a residential development of 5 acres or less and a non - residential development of 2 acres or less must have an adequate outlet as signified by the Village Engineer. If the outlet is not adequate, then detention, as deter mined by the Village Engineer, will be required to store that portion of the runoff exceeding the outlet capacity. (b) The release rate of storm water from all developments requiring detention shall not exceed the storm water runoff rate from the area in its natural undeveloped state. i'• • • Icy.__. '. I • i. Because of the flat conditions of the land in this area, channel configurations cut by nature are gen- erally unable to handle the runoff from high inten- sity rainfalls and results in flood plain storage or spreading of runo:cf over the land areas during the larger storm periods. In order not to increase the runoff from such areas after development, the release rate must be limited to carrying capacity of these natural channels. a ii. The Village will accept the release rate of not greater than that calculated from a storm of two (2) year frequency with a runoff rate coefficient of 0.15, unless the applicant can show by his detail calculations, which are acceptable by the Village that the discharge rate of the natural outlet channel serving the area is greater. (c) Drainage systems shall have adequate capacity to bypass through the development the flow from all upstream area for a storm of design frequency assuming that the land is in a fully developed state under present zoning or zoning proposed under a Comprehensive Plan. The bypass flow rate shall be computed utilizing a runoff coefficient of not ' less than 0.35. An allowance will be made for upstream detention when such upstream detention and release rate has previously been approved by the Village and evidence of its construction can be shown. ° (d) The detention volume required shall be that necessary to handle the runoff of a one hundred (100) year rainfall, for any and all durations, from the fully developed drain - age area tributary to the reservoir less that volume dis- charged during the same duration at the approved release rate. The live detention storage to be provided shall be + calculated on the basis of the one hundred (100) year and two (2) year frequency rainfalls as published by the U. S. . Weather Bureau for the Chicago area. (e) Detention facilities for developments within the Cook County portion of the Village shall be subject to the ap- proval of the Metropolitan Sanitary District of Greater Chicago. Detention facilities for developments within the Lake County portion of the Village shall be subject to the approval of the Lake County Department of Public Works. ' All detention facilities within the Village of Buffalo Grove are subject to the approval of the Village Engineer and the Village Board of Trustees. (f) Designs for fencing, embankment slopes, depth of permanent pools, protection of inlets and outlets, screenings, physi- cal shape and appearance shall be as determined and approved by the Village Engineer. SECTION 2. This Ordinance shall be in full ' force and effect from and after its passage and approval. 2 - r LEGAL NOTICE rust 14, 1972, at a meeting of the Ordinance #0- 72 -26, an ordinance providing for storm water detention Ordinance #0- 72 -36, an ordinance providing for a Municipal Collector These Ordinances are available in pamphlet form at'the Village Clerk's office, 50 Raupp Boulevard. Verna L. Clayton Village Clerk Legal Notice -'., _ On Of then August enter at a meeting Trustees of the Village oBoard . of 1 Grove, the following two OrdirBr f o we adopted: &ncece No. 0- 72.26, an ordl- Droviding f)r storm ,water detention Ordinance Nn. J 7Z 36. an' ord[ MC8onll �>rrovidhtg for Municipal These Ordinances are available in P=Dhiet form at - the Village Clerles office 50 RaapP Boulevard. VERNA L. CLAYTON Village Clerk Published In The ."Ierald . of $ui tffio Grove Aug. 24. 1973. Legal Notice On August 14, 1972, at a meeting of the President and Board of Trustees of the Village of Buffalo Grove, the following t ,10 Ordinances Ordinance No. 0- 72-26. an ordi- nance providing fir detention storm water Ordinance No. 0-72 -36, an ordi- nance Providing for a Municipal Collector These Ordinances are available in Pamphlet form at the Village Clerk's office, 50 Raupp Boulevard. VERNA L. CLAYTON Published Clerk in Th Herald Of But falo Grove Aug. 24 1973 . CERTIFICATE OF PUBLICATION PADDOCK PUBLICATIONS, INC. A Corporation organized and existing under and by virtue of the laws of the State of Illinois, DOES HEREBY CERTIFY That it . is the publisher of Buffalo Grove Herald That Buffalo Grove Herald is a secular newspaper and has been published daily in the Village of Buffalo . Grove County of Cook and State of Illinois, continuously for more than one year prior to, on and since the date of the first publication of the notice hereinafter referred to and is of gem eral circulation throughout said Village, County and State. I further certify that__ Buffalo, Grove Herald is a newspaper as defined in "an Act to revise the law in relation to notices" as amended - by Act approved July 17, 1959 —M. Revised Statutes, Chap. 100, Para. 1 and 5. That a notice of which the annexed printed slip is a true copy, was published in ROM Buffalo Grove Herald on the nth day of August A.D. 19 72 IN WITNESS WHEREOF, the undersigned, the said PADDOCK PUBLICA. TIONS, Inc-, has caused this certificate to be signed and its corporate seal affix- ed Hereto,. by MARGIE FLANDERS, its Treasurer, at Arlington Heights, Mnoi4 WLI L�th day of Augur t A.D. 1972 PADDOCK PUBLICATIONS, INC. L' Measurer. ORDINANCE NO. 72-0 �p AN ORDINANCE PROVIDING FOR STORM WATER DETENTION WHEREAS it is recognized, that the receiving streams and storm sewers within the area of the Village of Buffalo Grove do not have the capacity to receive and convey the in- creased storm water runoff resulting from rapid urbanization occurring in the Village and adjacent areas; that these re- ceiving streams and storm sewers are subject to frequent flood- ing which results in a growing rate of property damage; that it is necessary that detention storage of storm water be pro- vided to eliminate the excessive storm water runoff caused by the reduction or elimination of previous land surfaces through the construction of buildings, parking lots, streets and other improvements to real estate. NOW THEREFORE BE IT ORDAINED BY THE PRESIDENT AND BOARD OF TRUSTEES OF THE VILLAGE OF BUFFALO GROVE, LAKE AND COOK COUNTIES, ILLINOIS SECTION 1: Notwithstanding the provisions of the Building Ordinance to the contrary, no building permit will be issued unless the applicant provides on -site detention of storm water runoff or participates in the provision of a Village approved regional detention facility as set forth in the following criteria: (a) A combination of storage and controlled release of storm water runoff is required for all residential developments exceeding 5 acres in area, for all residential develop- ments of less than 5 acres which have an impervious. area of 50 percent or greater, for all non - residential devel- opments exceeding 2 acres in area and for all non -resi- dential developments of less than 2 acres which have an impervious area of 50 percent or greater. However, a. residential development of 5 acres or less and a non- residential development of 2 acres or less must have an adequate outlet as signified by the Village Engineer. If the outlet is not adequate, then detention, as deter- mined by the Village Engineer, will be required to store that portion of the runoff exceeding the outlet capacity. (b) The release rate of storm water from all developments requiring detention shall not exceed the storm water runoff rate from the area in its natural undeveloped state. i. Because of the flat conditions of the land in this area, channel configurations cut by nature are gen- erally unable to handle the runoff from high inten- sity rainfalls and results in flood plain storage or spreading of runoff over the land areas during the larger storm periods. In order not to increase the runoff from such areas after development, the release rate must be limited to carrying capacity of these natural channels. ii. The Village will accept the release rate of not greater than that calculated from a storm of two (2) year frequency with a runoff rate coefficient of 0.15, unless the applicant can show by his detail calculations, which are acceptable by the Village that the discharge rate of the natural outlet channel serving the area is greater. (c) Drainage systems shall have adequate capacity to bypass through the development the flow from all upstream area for a storm of design frequency assuming that the land is in a fully developed state under present zoning or zoning proposed under a Comprehensive Plan. The bypass flow rate shall be computed utilizing a runoff coefficient of not less than 0.35. An allowance will be made for upstream detention when such upstream detention and release rate has previously been approved by the Village and evidence of its construction can be shown. (d) The detention volume required shall be that necessary to handle the runoff of a one hundred (100) year rainfall, for any and all durations, from the fully developed drain- age area tributary to the reservoir less that volume dis- charged during the same duration at the approved release rate. The live detention storage to be provided shall be calculated on the basis of the one hundred (100) year and two (2) year frequency rainfalls as published by the U. S. Weather Bureau for the Chicago area. (e) Detention facilities for developments within the Cook County portion of the Village shall be subject to the ap- proval of the Metropolitan Sanitary District of Greater Chicago. Detention facilities for developments within the Lake County portion of the Village shall be subject to the approval of the Lake County Department of Public Works. All detention facilities within the Village of Buffalo Grove are subject to the approval of the Village Engineer and the Village Board of Trustees. (f) Designs for fencing, embankment slopes, depth of permanent pools, protection of inlets and outlets, screenings, physi- cal shape and appearance shall be as determined and approved by the Village Engineer. SECTION 2. This Ordinance shall be in full force and effect from and after its passage and approval. - 2 - T , Ayes: Trustee Nayes : �Trus`` ee--" Absent: Trustee w 1 Passed this / day of , 1972. Attest: Clerk -3- LEGAL NOTICE -On August 14, 1972, at a meeting of the President and Board of Trustees of the Village of Buffalo Grove., the following two Ordinances were adopted: Ordinance #0- 72 -26, an ordinance providing for storm water detention Ordinance #0 -72 -36 an ordinance providing for a Municipal Collector These Ordinances are available in pamphlet form at the Village Clerk's office, 50 Raupp Boulevard. Verna L. Clayton Village Clerk Legal Notice On August 14, 1972, at a~ meeting of the President and Board:. of j Trustees of the Village of Buft�lo Grove; the following, two Of "uf ces i we a adopted: rdinance No._ 0 72 26,' an ordi- nance providing f)r storm ,water detention Ordinance No. 0$2-36; an ordt- nance providing, fora Municipal. Collector These Ordinances are available in pamghlet form at - the Village' Clerk's office, 50 Raupp Boulevard. VERNA L. CLAYTON Village Clerk Published in The Herald of $uf Palo Grove Aug. 24, 19.71 CERTIFICATE OF PUBLICATION PADDOCK PUBLICATIONS, INC. A Corporation organized and existing under and by virtue of the laws of the State of Illinois, DOES HEREBY CERTIFY That it is the publisher Of Buffalo Grove Herald That said Buffalo Grove Herald is a` secular newspaper and has been published - daily in the Village of Buffalo Grove ,County of Cook and State of Illinois, continuously for more than one year prior to, on and since the date of the first publication of the notice hereinafter referred to and is of gen- eral circulation throughout said Village, County and State. I further certify that Buffalo' Grove Herald is a newspaper as defined in "an Act to revise the law in relation to notices ". as amended by Act approved July 17,.,1959-1[1. Revised Statutes, Chap.. 100, Para. 1 and 5. That a notice of which the annexed printed slip is a true copy, was published in said Buffalo Grove Herald on the 24th day of Augus t , A.D. 19 7 2 IN WITNESS WHEREOF, the undersigned, the said PADDOCK PUBLICA. TIONS, Inc., has caused this certificate to be signed and its corporate seal affix- ed hereto, by MARGIE FLANDERS, its Treasurer, at Arlington Heights, Illinois, this 24th day of August , A.D. 1912_. . PADDOCK PUBLICATIONS, INC. i Treasurer.