With­in any flood­way iden­ti­fied on the coun­ty­wide Flood Insur­ance Rate Map, and with­in all oth­er flood­plains where a flood­way has not been delin­eat­ed, the fol­low­ing stan­dards shall apply:

(A) Except as pro­vid­ed in Sec­tion 14–1‑6(B), no devel­op­ment shall be allowed which, act­ing in com­bi­na­tion with exist­ing or antic­i­pat­ed devel­op­ment will cause any increase in flood heights or veloc­i­ties or threat to pub­lic health and safe­ty.  The fol­low­ing spe­cif­ic devel­op­ment activ­i­ties shall be con­sid­ered as meet­ing this requirement:

(1) Bridge and cul­vert cross­ings of streams in rur­al areas meet­ing the fol­low­ing con­di­tions of the Illi­nois Depart­ment of Nat­ur­al Resources, Office of Water Resources Statewide Per­mit Num­ber 2:

(a) The cross­ing will not result in an increase in water sur­face pro­file ele­va­tion in excess of one (1) foot, and

(b) The cross­ing will not result in an increase in water sur­face pro­file ele­va­tion in excess of one-half (1/2) foot at a point one thou­sand (1,000) feet upstream of the pro­posed structure.

(c) There are no build­ings in the area impact­ed by the increas­es in water sur­face profile.

(d) The pro­posed bridge or cul­vert cross­ing will not involve straight­en­ing, enlarg­ing, or relo­cat­ing the exist­ing channel.

(e) The design must be cer­ti­fied by a licensed pro­fes­sion­al engi­neer in the State of Illi­nois and the designs must meet the con­di­tions of an IDNR/OWR permit.

(f) The design must be cer­ti­fied by a sec­ond licensed pro­fes­sion­al engineer.

(2) Barge fleet­ing facil­i­ties meet­ing the con­di­tions of IDNR/OWR Statewide Per­mit No. 3:

(a) The per­mit is only applic­a­ble when dead­men, pier cells, or oth­er sim­i­lar anchor­age devices have been per­mit­ted by the U.S. Army Corps of Engineers.

(3) Aer­i­al util­i­ty cross­ings meet­ing the fol­low­ing con­di­tions of IDNR/OWR Statewide Per­mit No. 4;

(a) The util­i­ty line must be con­struct­ed above the exist­ing 100-year flood ele­va­tion or attached to an exist­ing bridge.

(b) A util­i­ty line attached to an exist­ing bridge shall be con­struct­ed above the low cord ele­va­tion of the bridge.

(c) No sup­port­ing tow­ers or poles shall be locat­ed in a riv­er, lake or stream.

(d) Sup­port­ing tow­ers includ­ing foun­da­tion and poles shall be designed and locat­ed so as to not cause an obstruc­tion of flood flows by trap­ping debris.

(e) All dis­turbed areas shall be returned to pre-con­struc­­tion grades and re-vegetated.

(f) All Illi­nois Com­merce Com­mis­sion, Nation­al Elec­tri­cal Safe­ty Code, and fed­er­al require­ments must be met.

(4)  Minor boat docks meet­ing the fol­low­ing con­di­tions of IDNR/OWR Statewide Per­mit No. 5:

(a) The boat dock must not extend more than fifty (50) feet into a water­way and no more than one-quar­ter (1/4) of the width of the water­way and shall not extend beyond the nav­i­ga­tion­al lim­it­ed estab­lished by the IDNR and Corps of Engineers.

(b) The width of the boat dock shall not be more than ten (10) feet.

(c) For L‑shaped or T‑shaped docks, the length of that por­tion par­al­lel to the shore­line must not exceed fifty per­cent (50%) of the landowner’s shore­line frontage nor fifty (50) feet.

(d) Docks must be aligned so as not to cross the pro­jec­tion of prop­er­ty lines into the water­way or come with­in ten (10) feet of the pro­ject­ed prop­er­ty line.

(e) Dock posts must be marked by reflec­tive devices.

(f) The boat dock must be secure­ly anchored to pre­vent detach­ment dur­ing times of high wind or water.

(g) Met­al drums or con­tain­ers may not be used as buoy­an­cy units unless they are filled with floata­tion foam.  Con­tain­ers which pre­vi­ous­ly stored pes­ti­cides, her­bi­cides, or any oth­er tox­ic chem­i­cals are not permissible.

(h) This per­mit does not autho­rize any oth­er relat­ed con­struc­tion activ­i­ty such as shore pro­tec­tion or fill.

(i) Non-float­ing boat docks must be con­struct­ed in a man­ner which will min­i­mize obstruc­tion to flow.

(j) At any future date, the per­mit­tee must agree to make nec­es­sary mod­i­fi­ca­tions to the dock as deter­mined by the IDNR or Corp of Engineers.

(5) Minor, non-obstruc­­tive activ­i­ties meet­ing the fol­low­ing con­di­tions of IDNR/OWR Statewide Per­mit No. 6:

(a) The fol­low­ing activ­i­ties (not involv­ing fill or pos­i­tive change in grade) are cov­ered by this permit:

(i) the con­struc­tion of under­ground util­i­ty lines, wells, or sep­tic tanks not cross­ing a lake or stream.

(ii) the con­struc­tion of light poles, sign posts, and sim­i­lar structures.

(iii) the con­struc­tion of side­walks, dri­ve­ways, ath­let­ic fields (exclud­ing fences), patios, and sim­i­lar structures.

(iv) the con­struc­tion of prop­er­ly anchored, unwalled, open struc­tures such as play­ground equip­ment, pavil­ions, and carports.

(v) the place­ment of prop­er­ly anchored build­ings not exceed­ing sev­en­ty (70) square feet in size, nor ten (10) square feet in any dimen­sion.  Only one such build­ing on a prop­er­ty is autho­rized by this statewide permit.

(vi) the rais­ing of exist­ing build­ings, pro­vid­ed no changes are made to the out­side dimen­sions of the build­ing and the place­ment of fill is not involved.

(6) Out­fall struc­tures and drainage ditch out­lets meet­ing the fol­low­ing con­di­tions of IDNR/OWR Statewide Per­mit No. 7:

(a) Any out­fall struc­ture, includ­ing any head­wall or end-sec­­tion, shall not extend river­ward or lake­ward of the exist­ing adja­cent nat­ur­al bank slope or adja­cent bank protection.

(b) The veloc­i­ty of the dis­charge shall not exceed the scour veloc­i­ty of the chan­nel soil, unless chan­nel ero­sion would be pre­vent­ed by the use of riprap or oth­er design measures.

(c) Out­lets from drainage ditch­es shall not be opened to a stream until the ditch is veg­e­tat­ed or oth­er­wise sta­bi­lized to min­i­mize stream sedimentation.

(d) Dis­tur­bance of stream­side veg­e­ta­tion shall be kept to a min­i­mum dur­ing con­struc­tion to pre­vent ero­sion and sed­i­men­ta­tion.  All dis­turbed flood­way areas, includ­ing the stream banks, shall be restored to their orig­i­nal con­tours and seed­ed or oth­er­wise sta­bi­lized upon com­ple­tion of construction.

(7) Under­ground pipeline and util­i­ty cross­ings meet­ing the con­di­tions of IDNR/OWR Statewide Per­mit No. 8:

(a) In all cas­es, the cross­ing shall be placed beneath the bed of the riv­er, lake or stream and, unless the cross­ing is encased in con­crete or entrenched in bedrock, a min­i­mum of three (3) feet of cov­er shall be pro­vid­ed.  The riv­er, lake or stream bed shall be returned to its orig­i­nal condition.

(b) Dis­tur­bance of stream­side veg­e­ta­tion shall be kept to a min­i­mum dur­ing con­struc­tion to pre­vent ero­sion and sed­i­men­ta­tion.  All dis­turbed flood­way areas, includ­ing stream banks, shall be restored to their orig­i­nal con­tours and seed­ed or oth­er­wise sta­bi­lized upon com­ple­tion of construction.

(c) Any util­i­ty cross­ing car­ry­ing mate­r­i­al which may cause water pol­lu­tion, as defined by the Envi­ron­men­tal Pro­tec­tion Act (415 ILCS 5), shall be pro­vid­ed with shut-off valves on each side of the body of water to be crossed.

(d) If blast­ing is to be uti­lized in the con­struc­tion of the cross­ing, the per­mit­tee shall noti­fy the IDNR/OWR at least ten (10) days pri­or to the blast­ing date to allow mon­i­tor­ing of any relat­ed fish kills.

(8) Bank sta­bi­liza­tion projects meet­ing the con­di­tions of IDNR/OWR Statewide Per­mit No. 9:

(a) Only the fol­low­ing mate­ri­als may be uti­lized in urban areas: stone and con­crete riprap, steel sheet pil­ing, cel­lu­lar blocks, fab­ric-formed con­crete, gabion bas­kets, rock and wire mat­tress­es, sand/cement filled bags, geot­ech­ni­cal fab­ric mate­ri­als, nat­ur­al veg­e­ta­tion and treat­ed tim­ber.  Urban areas are defined as: areas of the State where res­i­den­tial, com­mer­cial, or indus­tri­al devel­op­ment cur­rent­ly exists or, based on land use plans or con­trols, is expect­ed to occur with­in ten (10) years.  (The Depart­ment should be con­sult­ed if there is a ques­tion of whether or not an area is con­sid­ered urban).

(b) In addi­tion to the mate­ri­als list­ed in Sec­tion 14–1‑6(A)(8)(a), oth­er mate­ri­als (e.g. tire revet­ments) may be uti­lized in rur­al areas pro­vid­ed all oth­er con­di­tions of this per­mit are met.

(c) The fol­low­ing mate­ri­als shall not be used in any case: auto bod­ies, garbage or debris, scrap lum­ber, met­al refuse, roof­ing mate­ri­als, asphalt or oth­er bitu­mi­nous mate­ri­als, or any mate­r­i­al which would cause water pol­lu­tion as defined by the Envi­ron­men­tal Pro­tec­tions Act (415 ILCS 5).

(d) The affect­ed length of shore­line, stream bank, or chan­nel to be pro­tect­ed shall not exceed, either sin­gu­lar­ly or cumu­la­tive­ly, one thou­sand (1,000) feet.

(e) All mate­r­i­al uti­lized shall be prop­er­ly sized or anchored to resist antic­i­pat­ed forces of cur­rent and wave action.

(f) Mate­ri­als shall be placed in a way which would not cause ero­sion or the accu­mu­la­tion of debris on prop­er­ties adja­cent to or oppo­site the project.

(g) Mate­ri­als shall not be placed high­er than the exist­ing top of the bank.

(h) Mate­ri­als shall be placed so that the mod­i­fied bank full-width and cross-sec­­tion­al area of the chan­nel will con­form to or be no more restric­tive than that of the nat­ur­al chan­nel upstream and down­stream of the site.

For projects involv­ing con­tin­u­ous place­ment of riprap along the bank, toe of the bank or oth­er sim­i­lar appli­ca­tions, in no case shall the cross-sec­­tion­al area of the nat­ur­al chan­nel be reduced by more than ten per­cent (10%) nor the vol­ume of mate­r­i­al placed exceed two (2) cubic yards per lin­eal foot of the stream bank or shore­line.  The bank may be grad­ed to obtain a flat­ter slope and to lessen the quan­ti­ty of mate­r­i­al required.

(i) If bro­ken con­crete is used, all pro­trud­ing mate­ri­als such as rein­forc­ing rods shall be cut flush with the sur­face of the con­crete and removed from the con­struc­tion area.

(j) Dis­tur­bance of veg­e­ta­tion shall be kept to a min­i­mum dur­ing con­struc­tion to pre­vent ero­sion and sed­i­men­ta­tion.  All dis­turbed areas shall be seed­ed or oth­er­wise sta­bi­lized upon com­ple­tion of construction.

(k) In the case of sea­walls and gabion struc­tures on lakes, the struc­ture shall be con­struct­ed at or land­ward of the water line as deter­mined by the nor­mal pool ele­va­tion, unless:

(i) It is con­struct­ed in align­ment with an exist­ing seawall(s) or gabion structure(s), and

(ii) the vol­ume of mate­r­i­al placed, includ­ing the struc­ture, would not exceed two (2) cubic yards per lin­eal foot.

(l) Excess mate­r­i­al exca­vat­ed dur­ing the con­struc­tion of the bank or shore­line pro­tec­tion shall be placed in accor­dance with local, state, and fed­er­al laws and rules, shall not be placed in a floodway.

(9) Acces­so­ry struc­tures and addi­tions to exist­ing res­i­den­tial build­ings meet­ing the con­di­tions of IDNR/OWR Statewide Per­mit No. 10:

(a) The acces­so­ry struc­ture or build­ing addi­tion must com­ply with the require­ments of the local flood­plain ordinance.

(b) The prin­ci­ple struc­ture to which the project is being added must have been in exis­tence on the effec­tive date of this per­mit (July 25, 1988).

(c) The acces­so­ry struc­ture or addi­tion must not exceed five hun­dred (500) square feet in size and must not deflect flood­wa­ters onto anoth­er prop­er­ty, and

(d) must not involve the place­ment of any fill material.

(e)  No con­struc­tion shall be under­tak­en in, or with­in fifty (50) feet of the bank of the stream channel.

(f)  The acces­so­ry struc­ture or addi­tion must be prop­er­ly anchored to pre­vent its move­ment dur­ing flood conditions.

(g) Only one acces­so­ry struc­ture or addi­tion to an exist­ing struc­ture shall be autho­rized by this per­mit; plans for any sub­se­quent addi­tion must be sub­mit­ted to IDNR/OWR for review.

(h) Dis­tur­bances of veg­e­ta­tion shall be kept to a min­i­mum dur­ing con­struc­tion to pre­vent ero­sion and sed­i­men­ta­tion.  All dis­turbed flood­way areas shall be seed­ed or oth­er­wise sta­bi­lized upon com­ple­tion of construction.

(10) Minor main­te­nance dredg­ing activ­i­ties meet­ing the fol­low­ing con­di­tions of IDNR/OWR Statewide Per­mit No. 11:

(a)  The affect­ed length of the stream shall not either sin­gu­lar­ly or cumu­la­tive­ly exceed one thou­sand (1,000) feet.

(b) The project shall not include the con­struc­tion of any new chan­nel; all work must be con­fined to the exist­ing chan­nel or to reestab­lish­ing flows in the nat­ur­al stream chan­nel, and

(c) the cross-sec­­tion­al area of the dredged chan­nel shall con­form to that of the nat­ur­al chan­nel upstream and down­stream of the site.

(d) Dredged or spoil mate­r­i­al shall not be dis­posed of in a wet­land and shall be either:

(i) Removed from the floodway;

(ii) used to sta­bi­lize an exist­ing bank pro­vid­ed no mate­ri­als would be placed high­er than the exist­ing top of bank and pro­vid­ed the cross-sec­­tion­al area of the nat­ur­al chan­nel would not be reduced by more than ten per­cent (10%), nor the vol­ume of mate­r­i­al placed exceed two (2) cubic  yards per lin­eal foot of streambank;

(iii) used to fill an exist­ing washed out or scoured flood­plain area such that the aver­age nat­ur­al flood­plain ele­va­tion is not increased;

(iv) used to sta­bi­lize an exist­ing lev­ee pro­vid­ed the height of the lev­ee would not be increased nor its align­ment changed;

(v) placed in a dis­pos­al site pre­vi­ous­ly approved by the Depart­ment in accor­dance with the con­di­tions of the approval, or

(vi)  used for beach nour­ish­ment, pro­vid­ed the mate­r­i­al meets all applic­a­ble water qual­i­ty standards.

(e) Dis­tur­bance of stream­side veg­e­ta­tion shall be kept to a min­i­mum dur­ing con­struc­tion to pre­vent ero­sion and sed­i­men­ta­tion.  All dis­turbed flood­way areas, includ­ing the stream banks, shall be seed­ed or oth­er­wise sta­bi­lized upon com­ple­tion of construction.

(11 Bridge and cul­vert replace­ment struc­tures and bridge widen­ing meet­ing the fol­low­ing con­di­tions of IDNR/OWR Statewide Per­mit Num­ber 12:

(a) A licensed pro­fes­sion­al engi­neer shall deter­mine and doc­u­ment that the exist­ing struc­ture has not been the cause of demon­stra­ble flood dam­age.  Such doc­u­men­ta­tion shall include, at a min­i­mum, con­fir­ma­tion that:

(i) No build­ings or struc­tures have been impact­ed by the back­wa­ter induced by the exist­ing struc­ture, and

(ii) there is no record of com­plaints of flood dam­ages asso­ci­at­ed with the exist­ing structure.

(b) A licensed pro­fes­sion­al engi­neer shall deter­mine that the new struc­ture will pro­vide the same or greater effec­tive water­way open­ing as the exist­ing struc­ture.  For bridge widen­ing projects the exist­ing piers and the pro­posed pier exten­sions must be in line with the direc­tion of the approach­ing flow upstream of the bridge.

(c) The project shall not include any appre­cia­ble rais­ing of the approach roads.  (This con­di­tion does not apply if all points on the approach­es exist at an ele­va­tion equal to or high­er than the 100-year fre­quen­cy flood head­wa­ter ele­va­tion as deter­mined by a FEMA flood insur­ance study com­plet­ed or approved by IDNR/OWR).

(d) The project shall not involve the straight­en­ing, enlarge­ment or relo­ca­tion of the exist­ing chan­nel of the riv­er or stream except as per­mit­ted by the Department’s Statewide Per­mit Num­ber 9 (Minor 
Shore­line, Chan­nel and Stream­bank Pro­tec­tion Activ­i­ties) or Statewide Per­mit Num­ber 11 (Minor Main­te­nance Dredg­ing Activities).

(e) The per­mit­tee shall main­tain records of projects autho­rized by this per­mit nec­es­sary to doc­u­ment com­pli­ance with the above conditions.

(12) Tem­po­rary con­struc­tion activ­i­ties meet­ing the fol­low­ing con­di­tions of IDNR/OWR Statewide Per­mit Num­ber 13:

(a) No tem­po­rary con­struc­tion activ­i­ty shall be com­menced until the indi­vid­ual per­mit­tee deter­mines that the per­ma­nent struc­ture (if any) for which the work is being per­formed has received all required fed­er­al, state and local authorizations.

(b) The term “tem­po­rary” shall mean not more than one con­struc­tion sea­son.  All tem­po­rary con­struc­tion mate­ri­als must be removed from the stream and flood­way with­in one (1) year of their place­ment and the area returned to the con­di­tions exist­ing pri­or to the begin­ning of con­struc­tion.  Any desired sub­se­quent or repet­i­tive mate­r­i­al place­ment shall not occur with­out the review and approval of the IDNR/OWR.

(c) The tem­po­rary project shall be con­struct­ed such that it will not cause ero­sion or dam­age due to increas­es in water sur­face pro­files to adja­cent prop­er­ties.  For loca­tions where there are struc­tures in the upstream flood­plain, the tem­po­rary project shall be con­struct­ed such that all water sur­face pro­file increas­es, due to the tem­po­rary project, are con­tained with­in the chan­nel banks.

(d) This per­mit does not autho­rize the place­ment or con­struc­tion of any sol­id embank­ment or wall such as a dam, road­way, lev­ee, or dike across any chan­nel or floodway.

(e) No tem­po­rary struc­ture shall be placed with­in any riv­er or stream chan­nel until a licensed pro­fes­sion­al engi­neer deter­mines and doc­u­ments that the tem­po­rary struc­ture will meet the require­ments of Spe­cial Con­di­tion Num­ber 3 of this statewide per­mit.  Such doc­u­men­ta­tion shall include, at a min­i­mum, con­fir­ma­tion that no build­ings or struc­tures will be impact­ed by the back­wa­ter induced by the tem­po­rary structure.

(f) The per­mit­tee shall main­tain records of projects autho­rized by this per­mit nec­es­sary to doc­u­ment com­pli­ance with the above condition.

(g) Dis­tur­bance of veg­e­ta­tion shall be kept to a min­i­mum dur­ing con­struc­tion to pre­vent ero­sion and sed­i­men­ta­tion.  All dis­turbed areas shall be seed­ed or oth­er­wise sta­bi­lized upon com­ple­tion of the removal of the tem­po­rary construction.

(h) Mate­ri­als used for the project shall not cause water pol­lu­tion as defined by the Envi­ron­men­tal Pro­tec­tion Act (415 ILCS 5).

(13) Any devel­op­ment deter­mined by IDNR/OWR to be locat­ed entire­ly with­in a flood fringe area shall be exempt from State Flood­way per­mit requirements.

(B) Oth­er devel­op­ment activ­i­ties not list­ed in para­graph (A) may be per­mit­ted only if:

(1) A per­mit has been issued for the work by IDNR/OWR (or writ­ten doc­u­men­ta­tion is pro­vid­ed that an IDNR/OWR per­mit is not required); or

(2) Suf­fi­cient data has been pro­vid­ed to FEMA when nec­es­sary, and approval obtained from FEMA for a revi­sion of the reg­u­la­to­ry map and base flood elevation.