SWG-28-352 MODIFICAION REQUEST Page 1 of 26 USACE RECEIVED DATE: 1 AUG18.. 7196/Graphics/IP Figures-Relocated Outfall Structures/7196A1PA_vic.mxd I SBF I 4-15-213 -,. II II I- _J.G\\ \<:--spo?> - '-""?>'"' r Chambers County t:' \J Jefferson County., ' A -I r Gulf of Mexico MAP SOURCE: ESRI, 21. 9 Horon? Miles 2 l:=i Project Area FIGURE 1 VICINITY MAP SWG-28-352 --
SWG-28-352 MODIFICAION REQUEST Page 2 of 26 USACE RECEIVED DATE: 1 AUG18,u ;. :.ti ( "":" -:,.-:_.:, -:.-. - ::r-. - ; L. '. ' '....,. : i. \ ;;, '\ do. \ ell.; ---.. -.: =- i.... :r {:r -. ' ',- ' :.; ;/, /.1.. --..,_,_,, _.... - -, ' '.. '\, jj- "...i - I )-!- -< -........ / -- - r. - _ - : (.,: '...,,.. -. \, \!.... 4: : -.:-r - - 1 \\ -- \ 7196/Graphics/IP Figures-Reconstruct Canals/7196A2PA_topo-fema.mxd I SBF I 4-15-213 j ' l -.'..!. i, /,, "'"-,_..,,,.,,.,,. -. 't,, r -;'. - i... "', l"1 -!. -:. -. - -..:.... \\/ '\:. " "" :"_--.::.. :...;. -.,...:-- -.... -,,, - i, ;, _;'.. :'. ;.\... J..,...- ": - --- - '., - _, x.;\l. ; :. -"'- - ' " ::.. ;, /::: : -.,.. /.- Outfall c 1 '> ";..... r :-. ; \j,1 \\\ ' '.:-:...... -- --... ---.. -.;: ;:;If!.. - :-... _, =:r;:*sw{ritif f x;;g1t; c MAP SO URCE: USGS, 1974 & 1994. e D Horon- 2, 4, ::::J CJ Project Area A- 1 Year Floodplain FIGURE 2 TOPOGRAPHY AND FLOOD MAP SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 3 of 26 USACE RECEIVED DATE: 1 AUG18 """'" 7196/Graphics/IP Figures-Reconstruct Canals/7196A3PA_NWl.mxd I SBF I 4-15-213 PEMI PU'.BF11 Outfall Canal 4 PQi; MAP SOURCE USFWS, 211 a. e Horon? ;FP@F 2, 4,.tJ.. - CJ Project Area POlill Pol}H PEIOl1F P!JiF - - p(iljffe. PEl'1F p r-o>r PEM1F... PE9t:U H W1C PEMt:H -B...,. PUBH 1F llvtt E - PU8tt E Pl!ll1F """" = FIGURE 3 PED1F USFWS NWI MAP CHAMBERS AND JEFFERSON COUNTIES, TEXAS SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 4 of 26 USACE RECEIVED DATE: 1 AUG18 P SOURCE: USDA, JEFFERSON CO., 212. 1 2 Horon- c::j Project Area FIGURE 4 OUTFALL CANAL 1 212 AERIAL PHOTOGRAPHY SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 5 of 26 USACE RECEIVED DATE: 1 AUG18 <D '" r-- "' c "' ".. " i} lj;{ ';,'.ii.;:;o. i ;.( :, :.<.;. <.. I GULF INTRACOASTAL WATERWAY I P SOURCE: USDA, JEFFERSON CO., 212. 1 2 Horon- D Project Area -- Project Limits I:::::: J Existing Levee o Wetland Data Point Jurisdictional Area Coastal Prairie Marsh Unvegetated Flat FIGURE 5 OUTFALL CANAL 1 JURISDICTIONAL DETERMINATION MAP SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 6 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE: USDA, JEFFERSON CO, 212. 1 2 Horon- l=nvirnnmant:il Services. Inc. D Project Area Impact Area - Outfall Structure 1 Construction Activity EJ Existing Levee Jurisdictional Area CJ Fill - New Levee L:::::J Coastal Prairie Marsh Fi ll - Wetland Restoration CJ Excavation - Existing Ca1na1.,,Jim!'.22'J Unvegetated Flat - Fi ll - New Outfall Structure IZZJ Articulated Concrete Mat Polygon - Breakwater FIGURE 6 REV OUTFALL CANAL 1 RECONSTRUCTION OF OUTFALL CANAL MAP CHAMBERS AND JEFFERSON COUNTIES, TEXAS SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 7 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE: USDA, JEFFERSON CO., 21 2. c:j Project Area Marsh Wetland Restoration Impact Area Construction Activity 1 2 - Fill - New Outfall Structure LJ Excavation - Existing Canal rzzj Articulated Concrete Mat Polygon D Fill - New Levee Breakwater Horon- - ' I ""' FIGURE 7 REV OUTFALL CANAL 1 RESTORATION PLAN CHAMBERS AND JEFFERSON COUNTIES, TEXAS SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 8 of 26 USACE RECEIVED DATE: 1 AUG18 1 2 Horon- c:::::j Project Area FIGURE 8 OUTFALL CANAL 2 212 AERIAL PHOTOGRAPHY CHAMBERS AND JEFFERSON COUNTIES, TEXAS SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 9 of 26 USACE RECEIVED DATE: 1 AUG18............ GULF INTRACOASTAL WATERWAY 75 15 Horon- D Project Area Project Limits c:j Existi ng Levee o Wetland Data Point Jurisdictional Area Coastal Prairie Marsh t2zj Unvegetated Flat FIGURE 9 OUTFALL CANAL 2 JURISDICTIONAL DETERMINATION MAP SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 1 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE: USDA, JEFFERSON CO., 212. 1 2 Horon- l=nvirnnmi:>nt:il SP.rvices. Inc. - Breakwater - Outfall Structure 1 LJ Existing Levee Jurisdictional Area L:::J Coastal Prairie Marsh..,.:_. Fill - Wetland Restoration l2'2'j Unvegetated Flat - Fill New Outfall Structure IZZJ Articulated Concrete Mat Polygon - Breakwater FIGURE 1 REV OUTFALL CANAL 2 RECONSTRUCTION OF OUTFALL CANAL MAP SWG-2 8-352
SWG-28-352 MODIFICAION REQUEST Page 11 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE: USDA, JEFFERSON CO, 212. 1 2 Horon- c-. :... 1 c,..._-, ;,..,,.. 1..,,... D Project Area Breakwater Impact Area Construction Activity rzzj Articulated Concrete Mat Polygon c:::::::j Excavation - Existing Canal Marsh Wetland Restoration c:::::::j Fill - New Levee - Fill - New Outfall Structure FIGURE 11 REV OUTFALL CANAL 2 RESTORATION PLAN CHAMBERS AND JEFFERSON COUNTIES, TEXAS SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 12 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE USDA, JEFFERSON CO, 212. 15 3 Horon; c::j Project Area FIGURE 12 OUTFALL CANAL 3 212 AERIAL PHOTOGRAPHY SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 13 of 26 USACE RECEIVED DATE: 1 AUG18 P SOURCE: USDA, JEFFERSON CO., 212. 9 15 3 Horon- D Project Area -- Project Limits I: :::: : l Existi ng Levee o Wetland Data Point Jurisdictional Area Coastal Pra irie Marsh Unvegetated Flat FIGURE 13 OUTFALL CANAL 3 JURISDICTIONAL DETERMINATION MAP SWG-28-352
_..._.._... SWG-28-352 MODIFICAION... REQUEST.. Page 14 of 26 USACE RECEIVED DATE: 1 AUG18 TOP CUT OF GIWW CENTERLINE OF GIWW TOP CUT OF GIWW MAP SO URCE: USDA, JEFFERSON CO., 212. 175 35 Horon!!!!_ - - --!-- -----&.-rt--- -:--- -- c:j Project Area - Outfall Structure 3 LJ Existing Levee Jurisdictional Area Impact Area Construction Activity CJ Excavation - Existing Canal c::::j Fill - New Levee Coastal Prairie Marsh Fill - Wetland Restoration r:z2i Unvegetated Flat - Fill - New Outfall Structure [Z2I Articulated Concrete Mat Polygon - Breakwater FIGURE 14 REV OUTFALL CANAL 3 RECONSTRUCTION OF OUTFALL CANAL MAP SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 15 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE USDA, JEFFERSON CO, 212. 15 3 Horon-...!.. _, C'!>-- =--... c:j Project Area Marsh Wetland Restoration Impact Area Construction Activity [Z2J Articulated Concrete Mat Polygon c:::::j Excavation - Existing Canal Articulated Concrete Mat D Fill - New Levee - Breakwater - Fill - New Outfall Structure FIGURE 15 REV OUTFALL CANAL 3 RESTORATION PLAN CHAMBERS AND JEFFERSON COUNTIES, TEXAS SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 16 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE USDA, JEFFERSON CO, 212. 15 3 Horon- c::::j Project Area FIGURE 16 OUTFALL CANAL 4 212 AERIAL PHOTOGRAPHY SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 17 of 26 USACE RECEIVED DATE: 1 AUG18 I GULF INTRACOASTAL WATERWAY I P SOURCE: USDA, JEFFERSON CO., 212. 125 25 Horon- D Project Area -- Project Limits 1:: :::: :1 Existing Levee o Wetland Data Point Jurisdictional Area Coastal Prairie Marsh Unvegetated Flat FIGURE 17 OUTFALL CANAL 4 JURISDICTIONAL DETERMINATION MAP SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 18 of 26 USACE RECEIVED DATE: 1 AUG18 BREAKWATER STABLIL2ATION 7 LF AND 14 CU YDS K' TOP CUT OF GIWW CENTERLINE OF GIWW TOP CUT OF GIWW MAP SOURCE: USDA, JEFFERSON CO., 212. 125 25 Horon; - :... -... --...,... 1 c.....,,;"',...,.. In,.. Impact Area Construction Activity D Excavation - Existing Canal Coastal Prairie Marsh Fill - New Levee Unvegetated Flat Fill - Wetland Restoration j:: ::: I Existing Levee - Fill - New Outfall Struc;iturel'Jlll!I Jurisdictional Area " - Outfall Structure 4 [ZJ Articulated Concrete Mat Polygon - Breakwater FIGURE 18 REV OUTFALL CANAL 4 RECONSTRUCTION OF OUTFALL CANAL MAP SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 19 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE: USDA, JEFFERSON CO., 212. l2zj Articulated Concrete Mat Polygon Impact Area - Breakwater 125 25 -- Outfall Structure 4 Horon- c.....,...,,....,...... 1 C:aruro.c lnr c::j Project Area. :.. :. Marsh Wetland Restoration FIGURE 19 REV OUTFALL CANAL 4 RESTORATION PLAN CHAMBERS AND JEFFERSON COUNTIES, TEXAS SWG-28-352
SWG-28-352 MODIFICAION REQUEST Page 2 of 26 USACE RECEIVED DATE: 1 AUG18...----------------------------------------------.!:::! (J) A 1 1 - -- (/) --' ('.) 3: "O.,; c E <I> (/) >< 5' EXISITING MARSH EL. 2' -3' -- (}_ (J) CD 1 C') CD (J) -5' - 5'---1--- 5'----...--5'---<.----- /PROPOSE ' I 5' LEVEE \ l --------- I PROPOSED I I :...!:;- 3 5' CANAL I J 3 tu L 1 \ I 1 o -;;; l :;;L: U?O'-'----i... PROPOSED WETLAND RESTORATION EL. 2' EXISTING LEVEE EXISITING MARSH EL. 2' - 3' 1-----------------------------------------------1 Cii c C1l u 2 1' Ci5 c () <I> :: "' ::::J Li: (L :;;; () E C1l c9 :c () c C1l :: B EXAl:ST:IN:GLEV:E:EJ:liiiiii 5' - PROPOSED ARTICULATED CONCRETE MAT PROPOSED 5' CANAL PROPOSED FILL OF EXISTING 3 CANAL FOR LEVEE 1 EXISTING LEVEE 2 "' -5' - - - -.--------EXISTING CANAL -12'-------i CDl-----------------------------------------------1 O>l-----------------------------------------------1 c 1' 5' - ---- - -5' -- - --,,.---... PROPOSED I 5' CANAL I " [tj I o ------'--- /PROPOSE ' I 5' LEVEE \ I '.. MARSH WETLAND RESTORATION AREA POST CONSTRUCTION EL. 2' EXISTING MARSH EL. 2' - 3' A' B' C' NOT TO SCALE HorfJOn- FIGURE 2 REV CROSS SECTIONS A-A' & B-B' OUTFALL AND POST CONSTRUCTION CROSS SECTION C-C' OUTFALL CANAL 1 - WHITE RANCH
SWG-28-352 MODIFICAION REQUEST Page 21 of 26 USACE RECEIVED DATE: 1 AUG18 D 1 1 -------------- D' EXISTING LEVEE,------, EXISTING MARSH I PROPOSED ' EL. 2, _ 3, I 5' LEVEE \ 3ry PROPOSED 1 r; - -l_\ 5' CANAL I J ;,. ti:i 1 "'--------' 1 D EXISTING LEVEE E AVERAGE 1' TO 2'12'1 TOP ELEVATION: 3.5' NAVO - I --1- - - E' GIWWSIDE 1.5:1 SLOP MEAN HI H TIDE INE MEAN LOW WATER LINE MIN.DISTANCE TO GIWN TOP CUT-13' MIN.DISTANCE TO GIWN CENTER - 235'!-- l'- F F' 1' MARSH WETLAND 5' - EXIST ING LEVEE ----------------------. C RESTORATION AREA PO ST CONSTRUCTION NEW ' MARSH - - - - LEVEE \ EL. 2' -------- uttudljullftljtaew EXISTING CANAL TO BE FILLED -5' - - - - - - - - - - NOT TO SCALE Horon- FIGURE 22 CROSS SECTIONS D-D' & E-E' OUTFALL AND POST CONSTRUCTION CROSS SECTION F-F' OUTFALL CANAL 2 -WHITE RANCH
SWG-28-352 MODIFICAION REQUEST Page 22 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SO URCE: USDA, JEFFERSO N CO, 212. IZ:ZI Articulated Concrete Mat Polygon - Breakwater Impact Area Construction Activity -- Outfall Structure 4 D Excavation - Existing Canal c::1j 5 1-==3] Proposed Wetland Restoration Elevation (ft) D Fill - New Levee. 'I -,dj'ffiffi[i"; Horon- FnvirnnmAntI Arvir.A!; lnr. e Existing Elevation (ft) - Fill - New Outfall Structure Marsh Wetland Restoration FIGURE 23 REV CANAL2 PROPOSED WETLAND RESTORATION ELEVATION RESTORATION PLAN SWG-28-352
..-----. SWG-28-352 MODIFICAION REQUEST Page 23 of 26 USACE RECEIVED DATE: 1 AUG18 N a; G G' 1'- - - - - - - - -,., 5. - - - - - (f) _J <.9 :;: "O 5'- tjj c u Q) (f) >< EXISTING MARSH EL. 3' -4' -5' - -- ------ -- EXISTING LEVEE 3 L -- -56' PROPoSEo- - - - - - - - - 5.,{1"' ""-"""'"""'o"""'o""'s""e""o... LEVEE,.---- PROPOSED WETLAND RESTORATION EL. 3' ',PROPOSE ' ' EXISTING EXISTING MARSH I 5 o LEVEE \... LEVEE,... EL. 3' - 4',,,.,... 1 """' --""-""-"'"-- - - + 66 - - - - - - - - - - - - - - 5' CANAL, I J 3 t ft 1 \ I 1 o S.XJ..SJlfiG_Cj\fiAl :::JQ.O.'. _ "iii rot----------------------------------------------t c ro t5 H ::::> 1 ---------------- c (.) Q) :: If) Q) :; 5' - - - - - - - - :+:.""'::'"''.""' u:::... (.) :.c TOP ELEVATION: 3.5' NAVD GIWVVSIDE 1.5:1 SLOPE o- - - - - - - - - -'!h'.6-''h'""'n:'-"'i..-.----,,.,...-,...'"""'71""""--l-...,-.:.!j;!:o.;.;.i.:::.i..:..t:o.1:;j"-'j;;;. <.9 :E (.) c ro :: If) Q) -5' MIN.DISTANCE TO GIWN TOP CUT 25' MIN.DISTANCE TO GIWN CENTER 35' t=======================================================================================: I I' 1'-------- - --- - - - ------ - - - -- - - - -- --- - -- ------ - ------- - -- -,.---- -------------------------,'PROPOSE' I 5' LEVEE ' MARSH WETLAND RESTORATION AREA POST CONSTRUCTION EL. 3' EXISTING MARSH EL. 3' - 4' - - - - - - - - - - -.;,... JI._...,. ;;-:_;,_------..--------------- - - - - - - - -- - - PROPOSED I t;: 5' CANAL,' ------«-'--- -5'---------- -- --- --- ------ H' NOT TO SCALE HorfJ!!!!!!!!on- FIGURE 24 REV CROSS SECTIONS G-G' & H-H' OUTFALL AND POST CONSTRUCTION CROSS SECTION 1-1' OUTFALL CANAL 3 -WHITE RANCH
SWG-28-352 MODIFICAION REQUEST Page 24 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE USDA, JEFFERSON CO., 212. 15 3 l2:2j Articulated Concrete Mat Polygon Impact Area == Breakwater Construction Activity - Outfall Structure 4 Excavation - Existing Canal Proposed Wetland Restoration Elevation (ft) LJ Fill - New Levee e Existing Elevation (ft) Fill - New Outfall Structure Marsh Wetland Restoration Horo n-.. S::nuirt"\n"".ontI C:o.r"i,...oc lnr- FIGURE 25 REV CANAL3 PROPOSED WETLAND RESTORATION ELEVATION RESTORATION PLAN CHAMBERS AND JEFFERSON COUNTIES TEXAS SWG-28-352,
.------., SWG-28-352 MODIFICAION REQUEST Page 25 of 26 USACE RECEIVED DATE: 1 AUG18 J N (j; 1'- - - - - - - - - - - (/) _J ('.) :l 5'--- ----- -- - -- -- c u Q) (/) x <(... <O..t- "<t <( <O EXISTING MARSH EL. 3' - 4' ------- --- -5'-------- - - - _ so ----- -_-. - 5 - - - - 56' PROPOSED LEVEE ------ - -L-"'(""p'""""o'"" 3 5' CANAL I J 3 w 1 \..., I 1 t o PROPOSED WETLAND RESTORATION EL. 3' ',PROPOSE ' \ EXISTING EXISTING MARSH I 5 o LEVEE \ LEVEE EL. 3' - 4' J',... _ -P""a""s""E""o'""-""""'1"', 1"--:...""-- -"'"-'""----:r6- o-------- ------- XJ_SJ:: lt:!_g_c.t:!_a1_ ::_1.Q_O.:_- _- _ -_- _- _---'. _ Ui rnt----------------------------------------------1 c u "' t5 K 2 u; 1' -- c u Q) ::: "' ::J 5'----- - - -.""' """"' u::... :;;; u :.c o--- ('.) :E u c ::: "' 2 "' -5'- -- TOP ELEVATION: 3.5' NAVO Gll/WJSIDE 1.5:1 SLOPE MEAN HIGH TIDE LINE MEAN LOW TIDE MIN.DISTANCE TO GIWN TOP CUT - 95' MIN.DISTANCE TO GIWN CENTER. 2' K' t----------------------------------------------1 L' 1'- ------------------- L 5'-- ---- - - PROPOSED I i'.: 5' CANAL,' " -----_,., MARSH WETLAND RESTORATION AREA POST CONSTRUCTION EL. 3' EXISTING MARSH EL. 3' -4' -5'---- ---- --- ---- -- - ----------------- --- ------------ -- ---- -- NOT TO SCALE HorfJon- FIGURE 26 REV CROSS SECTIONS J-J' &K-K' OUTFALL AND POST CONSTRUCTION CROSS SECTION L-L' OUTFALL CANAL 4-WHITE RANCH
SWG-28-352 MODIFICAION REQUEST Page 26 of 26 USACE RECEIVED DATE: 1 AUG18 MAP SOURCE: USDA, JEFFERSON CO, 212. 1 2 Horon- l=nvirnnm.. nbl s.. rv;,,.,., '""- Proposed Wetland Restoration Elevation (ft) Impact Area e Existing Elevation (ft) Construction Activity :::.: Marsh Wetland Restoration E:ZJ Articulated Concrete Mat Polygon = Breakwater - Outfall Structure 4 D Excavation Existing Canal rr;llllll c:j Fill New Levee - Fill New Outfall Structure FIGURE 27 REV CANAL4 PROPOSED WETLAND RESTORATION ELEVATION RESTORATION PLAN SWG-28-352