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Home My WebLink About15.B.2. Consider Approval of Plans and Specifications for Project No. 2004-4-Res. No. 6309 /58. :;:L./ . . Lower Minnesota River Watershed District 1'1'" ~ '" ~ ... ~_... 5 Len Kremer, President Kent Francis, Manager Hennepin County Carver County Ron Kraemer, Vice President Edward A. Schlampp, Manager Dakota County Hennepin County Lawrence Samstad, Treasurer Terry L. Schwalbe, Administrator Scott County Cell (952) 221-1089 DATE: October 3, 2005 TO: Bruce Loney, City of Shako pee FROM: Terry L. Schwalbe RE: Dean Lake Outlet Plan Detail Review A set of construction plans for the proposed outlet structure for Dean Lake in Shakopee was reviewed. The plans were prepared by WSB & Associates for the City of Shakopee and were dated September 6, 2005. The plans were reviewed for general erosion control and construction details. A memo to Terry Schwalbe regarding the proposed outlet elevation of Dean's Lake was previously prepared on April 11 , 2005. The proposed outlet location is located directly south of Trunk Highway 169 (TH 169). to the west of Wakefield Circle, and north of Oxford Road and Waterford Court. Access to the site for construction will come from Woodland Circle, located approximately 1500 feet west of the project location. The project consists of the construction of an overflow weir structure, berms to enclose the 750.0 foot contour, and associated erosion control measures. The proposed overflow weir structure has two options for construction presented. A concrete outlet structure is presented as Alternate A, while a sheet pile structure is presented as Alternate B. The concrete alternative makes provisions for an architectural treatment to be placed on the face of the structure. Regardless of the alternate selected, the details of the opening of the overflow weir remain the same. Scott County Government Center 200 ih Avenue West Shakopee, MN 55379 Phone: (952) 496-8842, Fax: (952) 496-8844 E-mail terrys@lowermn.com , . Lower Minnesota River Watershed District The outlet elevation of Dean Lake will be set at an elevation of 746.5. This is consistent with the details , of the previous memo prepared for the Board regarding setting the outlet elevation of Dean Lake. A 21'- foot segment of the weir will beset at this elevation and be directed to a riprap scour basin. The 1~ remainder of the weir steps up to higher elevations, with steps at 747.0 feet, 747.5 feet, and 749.5 feet. A riprap scour basin is provided the entire length of the proposed weir and into the downstream channel. The total length of the weir structure is 111 feet. An earthen berm will be constructed to the north and south of the proposed outlet structure. The proposed top of the berm is 750.0 feet. This provides one foot of freeboard from the high water level of Dean Lake, which is 749.0 for the 100-year, 10-day runoff event. The total length of the proposed berm is approximately 340 feet. The earth berm, weir structure, and associated rip rap will impact approximately 5300 square feet of wetlands. Over 11,000 square feet of replacement wetland are proposed on the northern portion of the construction site. The engineer has indicated the proposed location of the structure may move approximately 300 feet to the east of the location shown on the current plans. If this is done, the wetland impact and overall size of the berm will be reduced. Recommendations: 1. As submitted, the erosion control plans show silt fence being placed only on the east side of the proposed berm and weir structure (downstream of Dean Lake). Silt fence should also be placed on the west side of the proposed berm and weir to minimize the migration of sediment into the wetland area on the west side of the proposed berm. 2. If the location of the proposed structure is moved further east, revised construction plans should be submitted for the records of the LMRWD. As long as the general details of the proposed structure and berm remain the same, no review should be required. Conclusions As proposed, the outlet structure and associated berm and erosion control measures appear to be acceptable and in conformance with the previous review of the outlet elevations for Dean Lake. Scott County Government Center 200 ih Avenue West Shakopee, MN 55379 Phone: (952) 496-8842, Fax: (952) 496-8844 E-mail terrys@lowermn.com . ~ Lower Minnesota River Watershed District Revised plans showing the final location of the structurE;l and addressing the erosion control concerns should be submitted for the LMRWD records when available. v; Please give me a call at 952-496-8842 with any questions on this review. Scott County Government Center 200ih Avenue West Shako pee, MN 553 79 Phone: (952) 496-8842, Fax: (952) 496-8844 E-mail terrys@lowermn.com IS*. 5. 2 . CITY OF SHAKOPEE Memorandum TO: Mayor & City Council Mark McNeill, City Administrator FROM: Bruce Loney, Public Works Director SUBJECT: Consider Approval of Plans and Specifications for the Dean Lake Outlet Structure, Project No. 2004-4 DATE: October 4, 2005 INTRODUCTION: Attached is Resolution No. 6309, a resolution approving the plans and specifications and ordering an advertisement for the Dean Lake Outlet Structure, Project No. 2004-4. BACKGROUND: City staff has been working on a permanent control structure for the outlet of Dean Lake in order to regulate the 100-year flood elevation to an elevation of 749.0. The City did contract with WSB & Associates, Inc. to perform a feasibility study for the Dean Lake Outlet Structure, and approve an extension agreement for the final plans and specifications for the Dean Lake Outlet Structure. The City has had a DNR permit to construct the outlet structure since May 20, 1999. Attached to this memorandum is a set of plans, as well as an aerial photo of the outlet location, and example of a concrete outlet structure and a steel outlet structure. It is proposed with this project to bid both the steel and concrete outlet structure and bring the bid results back to the City Council for their final decision on which structure to proceed with. Plans have been sent to the Environmental Advisory Committee (EAC) as well as the Minnesota Department of Natural Resources (DNR), Army Corp of Engineers, Lower Minnesota River Watershed District (LMRWD) and the Prior Lake-Spring Lake Watershed District (PLSLWD). The plans were reviewed by the EAC at their September 15,2005 meeting and they had two comments in their recommendation to the City Council as follows: . Plans need to be reviewed and approved by the LMRWD prior to construction. . The EAC did recommend the use of the concrete outlet structure design as their preferred alternate, if financially feasible. f <l The design of the outlet control structure has a run out elevation of Dean Lake at 746.5, which was raised after much discussion and study with the DNR and the EAC. Previously, studies had indicated the run out elevation of Dean Lake to be at 745.7, but the DNR reviewed the run out elevation and concluded that the run out elevation could be between 745.7 and 746.9, in which the City would have discretion as to the run out elevation which would best meet the ultimate stormwater management design. The proposed location of the outlet structure is at a point which minimizes the amount of filling in the wetland complex, and best fits the area between the Southbridge development and T .R. 169. This project would be considered part of the Prior Lake Channel improvements and would qualify for reimbursement by other jurisdictions involved in the upgrade of the Prior Lake Channel. The Draft Joint Powers Agreement has the City's share of the improvement at 37.3% of the total cost. The total cost is estimated to be $250,000.00 in which the City would be responsible for $93,250.00. The Capital Improvement Program budget had a $170,000.00 cost in the Storm Drainage Fund for this project. Comments received from the PLSL WD are favorable to the project proceeding. Official LMRWD comments were not available at the writing of this memo, however, per Terry Schwalbe, LMRWD Administrator, the district is in favor of the project and will have comments by Tuesday's meeting. Pete Willenbring, of WSB & Associates, Inc, will be at the Council meeting to answer any questions as to the design and the hydraulic performance of the proposed outlet structure. ALTERNATIVES: 1. Approve Resolution No. 6309, a resolution approving the plans and specifications for the Dean Lake Outlet Structure, Project No. 2004-4. 2. Do not approve Resolution No. 6309. 3. Table for additional information. RECOMMENDATION: Staff recommends Alternative No.1, in order to proceed with the bidding of the outlet control structure for late fall and early winter construction season. It is staffs intent to bid the concrete outlet structure design and the steel outlet structure. design and bring back bid results on each of those. ACTION REQUESTED: Offer Resolution No. 6309, A Resolution Approving Plans and Specifications for the Dean Lake Outlet Structure and Ordering Advertisement for Bids, Project No. 2004-4, and move its adoption. 4:w~ Public Works Director BUpmp ENGRl2004PROJECTSIDEANLAKElWORDIMEM6309 RESOLUTION NO. 6309 A Resolution Approving Plans And Specifications And Ordering Advertisement For Bids For The Dean Lake Outlet Structure Project No. 2004-4 WHEREAS, pursuant to Resolution No. 5236 adopted by City Council on September 21, 1999, Bruce Loney, Public Works Director has prepared plans and specifications for improvements for the Dean Lake Outlet Structure, which includes the installation of a control structure, channel improvements, grading and any appurtenant work, and has presented such plans and specifications to the Council for approval. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF SHAKOPEE, MINNESOTA: 1. Such plans and specifications, a copy of which is on file and of record in the Office ofthe City Engineer, are hereby approved. ( 2. The City Clerk shall prepare and ca~se to be inserted in the official paper and in the Construction Bulletin an advertisement for bids upon the making of such improvement under such approved plans and specifications. The Advertisement for Bids shall be published as required by law. Adopted in session of the City Council of the City of Shakopee, Minnesota, held this day of , 2005. ( Mayor of the City of Shakopee ATTEST: City Clerk ENGRI2004PROJECT/DEANLAKE/WORDIRES6309 Page 1 of2 Bruce Loney From: Ryan Hughes Sent: Friday, September 16, 2005 3:08 PM To: SH Department Heads; SH Community Development; Joe Swentek; 'Tonya Schmieg'; 'Brian Spotl'; 'Heidi Benedict (heidLf.benedict@xcelenergy.com)'; 'Kate Lease (Kate.lease@netzero.net)'; 'Kate Sedlacek'; 'Kathy Gerlach'; 'Steve Menden (smenden@wenck.com)' Cc: 'thubmer@wsbeng.com' Subject: 9/14/05 EAC Meeting Summary The following action took place at the September 14, 2005 EAC meeting: . The Dean Lake Trail Signage agenda item was continued to the October meeting. . The Dean Lake Outlet Control Structure was reviewed and discussed. Todd Hubmer from WSB presented the options and discussed EAC concerns regarding the structure. The EAC recommends the aesthetically pleasing concrete structure if financially feasible for this project. Additionally, the EAC recommended the plans be reviewed and approved by the LMRWD prior to commencing construction and that a requirement be written in the project conditions or specifications that the silt fence be removed following establishment of vegetation. . The Shakopee Gravel CUP Renewal for Mining Operations was reviewed and discussed. The EAC discussed requiring an additional monitoring well in the NE corner of the site, requesting an inbound materials annual summary report to evaluate materials brought to the site, and a report/discussion evaluating why the existing well is dry and how that influences the monitoring process. . The Glacier Estates Final Plat was reviewed and discussed. The 25 foot buffer and 10 year wetland enhancement monitoring period conditions were discussed. Additionally, the EAC requested the removal of silt fences in all future developments be included in the developer agreement checklist. . The EAC discussed the recommended reguiding to low-density residential, rezoning to R-1 B, extension of MUSA and use of the PUD process for the Shutrop South property. This discussion included the Charges as identified in the resolution establishing the EAC (No. 5495), particularly item 5.(a.) of the resolution stating "Review land use and development proposals". The discussion that ensued determined that reguiding, rezoning, and MUSA extension can be included in the "Review of land use proposals"-. The EAC requested the opportunity to review such land use proposals in the future in accordance with the Charges indicated the EAC resolution. City Staff will include these land use proposals in the future as EAC agenda items. If anyone has questions regarding the September 14, 2005 EAC meeting please feel free to contact me. Thank you, Ryan Ryan Hughes Natural Resources Specialist City of Shakopee 1255 Fuller Street Shakopee, MN 55379 9/28/2005 , i,...Jl ~ WSB & Associates, Inc. Infrastructure I Engineering I Planning I Construction 701 Xenia Avenue South Suite 300 Minneapolis, MN55416 Memorandum Tel: 763-54H800 Fax: 763-541-1700 To: Honorable Mayor, City Council and Staff, C~ty of Shako pee From: Todd E. Hubmer, P.E., WSB & Associates, Inc. ~ /~-i( Date: September 28,2005 Re: Dean Lake Outlet Design City of Shakopee, MN WSB No. 1281-88 The final design plans and specifications for the Dean Lake outlet structure have been prepared. We have provided the following information in regards to the final design: 1. Aerial photo of the outlet location 2. Future trail locations 3. Example of concrete outlet structure A. Example of steel outlet structure The Dean Lake outlet structure as currently proposed has arunout elevation of746.5. Based on this runout elevation, the anticipated high water elevations in Dean Lake and the performance of the bypass structure upstream of Dean Lake are summarized in the following Table: . Dean Lake By-Pass (CFS) Storm Event Dean Lake HWL Flow to Dean Lake Flow to By-Pass 65cfs Prior Lake Base Flow 747.2 56 9 2-yr 24-hour (2.8") 747.3 90 20 5-yr 24-hour (3.5") . 747.6 160 40 10-yr 24-hour (4.2") 747.9 240 45 100-yr 24-hour (6.0") 748.7 480 60 100-yr 10-dayRunoff(7.2") 749.0 530 65 In addition to review by the Environmental Advisory Committee on September 14th, 2005, the plans have been sent to the following: 1. Minnesota Department of Natural Resources 2. Army Corps of Engineers 3. Lower Minnesota River Watershed District 4. Prior Lake Spring Lake Watershed District K: 10128 J -:J8L4dmin iDocs\A1 Ei\/O-ShakJ\1u.1'orCollllciISla.lf-09 2S05.doc Minneapolis I St. Cloud Equal Opportunity Employer , . Honorable May01;, City Council and Staff, City of Shakopee September 28, 2005 Page 2 To date, we have received comments from Shakopee EAC, Prior Lake Spring Lake Watershed District and the Minnesota Department of Natural Resources indicating approval of the proposed plans for the outlet structure at Dean Lake. The remain,ing approvals are from the City of ~ Shakopee for conformance with the Wetland Conservation Act and revision to the Anny Corps of Engineers existing permit. We anticipate the Lower Minnesota River Watershed District to provide comments on September 30th, 2005. . We will be present at the October4h, 2005 City Council meeting to review the information provided and request authorization to advertise the project for bid. Attachments kw ., K: \01281-88\AdminIDocsIMEMO-ShakMayorCounciiStaff-092805.doc -----.-- Aerial Photo t . Dean Lake Outlet Final Design WSB Scott County, MN 0 100 200 400 ,Feel & A.HOdc1tI!S. Inc. -~..- - --....-..-.- ~-..- ~.- -- --.----, - -- I I I I i_Future Trail I I I I I I I I I I I Aerial Photo I Dean Lake Outlet Final Design I I Scott County, MN 0 125 250 500 ,Feet & A.~.wdllleJ. Inc. I I -- ---.----- ______-----.J . I , ! ----- ---- t , . I . I I I i ! \ I I ! ! ] - - - - .- IS. f!;. J-. GOVERNING SPECIFICATIONS THE 2000 EDITION OF THE MINNESOTA DEPARTMENT OF TRANSPORTATION PLAN SYMBOLS "STANDARD SPECIFICATIONS FOR CONSTRUCTION." AND PROJECT SPECIFICATIONS STATE LINE ----- CITY OF SHAKOPEE ALL TRAFFIC CONTROL DEVICES AND SIGNING SHALL COM FORM TO THE MN MUTCD . COUN1Y LINE -..- INCLUDING THE FIELD MANUAL FOR TEMPORARY TRAFFIC CONTROL ZONE LAYOUTS TOWNSHIP OR RANGE LINE -- DATED JANUARY, 2001. ALL TRAFFIC CONTROL DEVICES SHALL HAVE. . SECTION LINE --- RETROREFLECTIVE SHEETING. QUARTER LINE --- SIXTEENTH LINE ---- RIGHT-OF-WAY LINE --- SLOPE EASEMENT ..-..-..JL- PRESENT RIGHT -OF -WAY ----- INDEX CONTROL OF ACCES LINE -0- PROPER1Y liNES (EXCEPT LANO LINES) CONSTRUCTION PLAN FOR DEAN LAKE OUTLET STRUCTURE VACATED PLATTED PROPERTY ------ SHEET NO. DESCRIPTION CORPORATE OR CITY LIMITS Ullll.Ullll.U TRUNK HIGHWAY CENTER LINE , " . ... I ~ -+- SOUTH OF TH 169 AT DEAN LAKE TITLE SHEET , RETAINING WALL LOCATED ON 1 ~ RAILROAD RAILROAD RIGHT-OF-WI\Y ---- I 2 GENERAL LAYOUT RIVER OR CREEK ... NAME~ " DRY RUN - 3 GRADING PLAN DRAINAGE DITCH SIZE - I / DRAIN TILE --:;>---------- 4-5 OUTLET DETAILS CULVERT c::c:r:.==== \ DROP INLET 0=<=<==== ". GUARD RAIL BARBED WIRE FENCE -x-x- .......". 101 -Y-x---.:::!...x- ---.... '-=- WOVEN WIRE FENCE CHAIN LINK FENCE ...fh.x-9:..x_ RAILROAD SNOW FENCE - - - STONE WI\LL OR FENCE ~ '" " HEDGE ~ RAilROAD CROSSING SIGN '" RAILROAD CROSSING BEll & ELECTRIC WARNING SIGN EJ CROSSIKG GATE - -. MEANDER CORNER . SPRINGS 0- -€J MI\RSH 'j * .I . i THIS PLAN CONTAINS 5 SHEETS TIMBER } ORCHARD . e> ~ '" BRUSH . < ALL APPLICABLE FEDERAL. STATE. AND LOCAL LAWS AND ORDINANCES WILL BE COMPLIED .. NURSERY WITH IN THE CONSTRUCTION OF THIS PROJECT. GATCH BASIN . Cll FIRE HYDRANT .,.. 12 GAmE GUI\RD -f-~-f- ~ A 701 Xenia Avenue South. Suite 300 OVERPASS (HIGHWI\Y OVER) ;., . 5 CR(b~R" WSB Minneapolis. MN 55416 www.wsbeng.com UNDERPASS (HIGHWAY UNDER) fJ-l/!= BRIDGE & Associates, Inc. 763-541-4800. Fax763.5.11-1700 BUILDING (ONE STORY FRAME) 11-S-FI~ INFRASTRUCTURE . ENGINEERING . PlANNING' CONSTRUCTION F - FRI\ME C - CONCRETE S - STONE T - TILE 75 B - BRICK ST - STUCCO IRON ROD OR PIPE . MONUMENT (STONE, CONCRETE, OR METAL) o MDNU, ~\ WOODEK HUB . GRAVEL PIT @ ~\ SANO PIT @ BORROW PIT @ APPROVED 20_ ROCK QUARRY @ CITY OF SHAKOPEE ENGINEER . UTILITY SYMBOLS POWER POLE LINE ~ TELEPHONE OR TELEGRAPH POLE LINE . . JOINT TELEPHONE AND POWER APPROVED 20_ ON POWER POLE ~ PROJECT LOCATION ON TELEPHONE POLES @ @ SHAKOPEE PUBLIC UTILITIES COMMISSION ENGINEER ANCHOR f-- DEAN LAKE STREET liGHT <l> PEDESTAL (TELEPHONE CABLE TERMINAL) I8JPED. 1<5 OUTLET CONSTRCUTION ''<$ GAS MAIN -G- WATER MAIN -I-I- CONDUIT TELEPHONE CABLE IN CONDUIT =ve=T= , ELECTRIC CABLE IN COKOUIT =ve=P= TELEPHONE MANHOLE CD ELECTRIC MANHOLE IT! BURIED TELEPHONE GABLE -T-llUR~ BURIED ELECTRIC CABLE -P-BUR- AERIAL TELEPHOKE GABLE .......T-AE - SEWER (SI\NITI\RY OR STORM),' ->-> SEWER MANHOLE ->-~ SCALES INDEX MAP ri..~~~ . I HEREBY CERTIFY THAT THIS PLAN WAS PREPARED BY ME OR UNDER MY DIRECT SUPERVISION AND THAT I AM A DULY LICENSED PROFESSIONAL ENGINEER UNDER THE 0 1000 2000 LAWS OF THE STATE OF MINNESOTA. PLAN """" .. . 0 50 100 PROFILE F\.. =..= ENGR. HORIZ. , TODD E HUBMER. P.E. 0 50 100 VERT. I"\J"~~ . DATE 9/6/05 L1C. NO. 24043 0 10 20 CITY PROJECT NO, 2005-7 . WSB PROJECT NO. 1281-88 TITLE SHEET SHEET NO. 1 OF 5 SHEETS - I % ~ 1\ ~ a~ ~ 1..- I OFT 150 300 <> <0 <> <0 " ...._-"~ tl;iVl l a f3 ~ <0 b ~ N Z 0 '" ~ < x . g ~ ~ fi .. ~ VI s I ~ ~ i ~ e.%~ PROJECT LOCATION ~~~ ~ ACCESS LOC TION OUTLET CONTROL ST UCTURE _~15 gil~;5 ;\ AND BERM CSUgO li:wud3 ua::U1z ffi wi5~Z ~~[~ :::::!:,. <D 0 ~~~~ => % : g US HWY. 169 ~~~: " ~w~i: 0 .... on h_::::), i:~i5~ " ~ ~:i~ " " ~~-w '" ffi~~: ~ ~~~I a <( ... Z 0 0 en i= W u Z w ::> ~ 0:: Z :5 ~ :!E z z <C 0 W w u W C I- W a. ..J 0 NO ACCESS FROM Mn/DOT I- ::> ~ RIGHT~OF-WAY IS AVAILABLE. 0 <( J: en "\ g~~ ~~ . ~I()~ ~~ (l)Z~ ...t; :5~~ .!a ~ 0~ f' ~l -~ :3 I) ~:z f6 g ...~ If II '~tr .s w : ~ ..~ g ~ ~ ~ .. '" ~ GENERAL LAYOUT SHEET. 2 OF 5 SHEETS u s HIGHWAY NO. 169 ____, co. \. CONSTRUCT BERM" )', __,) TO ELEVATION 750 =~.~~~~.=:..---~.=-::-:~~-:-----~-,-_:~----------- / __,___ ........_..... ...__.________-~.- _____.v.______.____._____.-__r,__._______f.-----\ _ 752 -/---'__,,_________---___.__...______, ___, .. ....._ ._.-...-..---__.. /--.~.. .... _.__........ -- _. ..._... ._.. /J7r"i .~ g CONSTRUCT BERM-- .-. ... _-~~.~ .',' 1\ ,------____ ~5 TO ELE~~~I~N 750 ___ ____.-----.--------- .....-/ (~\ "\\ ---- ~ ---746-__.-- \." \ i. I C> '" ___. ~.\ " _ ~ lOw :.J ["', SILT ;ENPE _J J\ ) ~o r ~ a r j L .. I f. /: z ~ ,___.__ __-om-oj TO BE SEEDED WITH MN/DOT .......CI.;ARAND GRUB . X.......... ) __/(/-' /i (... ~ ~ 8 ~; 8 ''---_...___/ <, /-- SEED MIXTURE 26B MITIGATION AREA ) r ( ,\ L _ - "on 0 \ . .... ,! tv 1>- ' " .. ~ ~ \ L.-) WETLAND M1 MITIGATION .'" ,'_ ! ly~EARA"ND G~B ~ ~ . ~ \j AREA(5.740Sq.~t\ _ _-"-->;,--, 'v/ 41t'AITS\qFOU1+ET ;:: ~Z" IQ/./( ______ -AND BE!'W COINSTRUCTION l;!~~ - /--"",/1/l,. .............WETLAND IMPAS:T1~ ;:!:) !;; . ! ~i~ g /__.._~.. __---.--\.. I SILT FENCE -... (407 sq ft) .,.. ........- "-. II' r- ) ~~~. '" ____ ..__..__-/--....... {__..) I -... . ......:;;.----.\ i i j_);c 0 ~v , I, 1..- ~t;gg '..._.., I IV" / '-..__ ~. /".-__. ... ----- ~ - 0: 0 o. ,,-. il. (,- I ~t!:::!!' __--"" ",-) __ "- /' , ..._____- ;:j40-' 0:: ':'000 \\ , -, OFT 50 100 t'''~~ i5 ___.-/ \'-..../ /__.-/.-----.:...._-'-_ DELINEAtES" ....-/ \. .__ WEI~.~-~ll;!,..D.sTONt: ~ os. 91f!J.:- .,,( . ~~~l; ~ g ______ 746 ____ c:::::'.----------- ~- _____, "\ WETLAND ..... / //._______ ~../ ").:;:.::- -=-=:.:---___ /---. RIPRAP BASIN //;::- o~o. :;:0 61~~!i x ':! . "'\ ,~_ ____" '\ \.., BO!.lJ~mARY ,,,.;> ----. />._,_. \... /.....c::::::::::;::~:::~'-..:~:------:, .--.\ WETLAND IMPACT 3 ~./:;;-;-.-/ 1:. ~~g; g \ ..; '-'_._ -/L./' .-". -<:::::::< ----.~./ '1'1 -----'-:',.J :"-_~'::..~_ ---:;.:::-J- \..,\\ \ (2165 s~~:::::::::--/ /. ':0-, NOTES: ~~~~ ~ ~ (---"f\.,F~,'___ ,..... -- '--..----.--.----/l,~ -"-.......--._.,......_.. ;0-' - ~__ _ n, ~~ /'" WE"";j.(ilf:r!i., ~ _ 1, EXCAVATED MATERIAL FROM WETLAND MITIGATION AREA !i~l ~ (,'\. ~ _ '\ ' _-:----J<!k=',)., !~h~-~~k/ / /JC /A TO BE USED TO CONSTRUCT BERM, !;ii ! "'--. (_-:':~:l \ : I \ L,,: \ \S"~~-,,-- /:=eoN~T~F{;E ~ 2. EXCESS MATERIAL TO BE WASTED ON-SITE IN UPLA. N.D . '\ ~ '\ ''''\ ~ i ( \ ~ () ) I) - TO Elkvft'FI 750 AREAS AS DIRECTED BY ENGINEER. '---.. c..\ \ \ 'vI'- ( I ' / / A , \ \ ') '. \ ~<? __..j I ../' 3. MATERIAL EXCAVATED TO SUB CUT NEW BERM SHALL BE ...... ). ~ ;r\> \.~U 1 " . . /~ 4)/ ~. .. -~?/V '. . STOCK PILED AND PLACED WITHIN MITIGATION AREA AFTER Z b _ y-...... ..__ ~ .J (> \ J'/f/:::X"''- /' . Cp?>>---/L W LANDEDGE EXCAVATION OF THAT AREA. 0 en ""__._ r--..~ \ ') ,.. \..... /1"-..,.... r--..- - W , __ J ' . .\ \ '*1 ;f-- - ...)..00-"': /___ I- ~ v- \. ...... <1-,.:0:--------" /"... . ..~9;-;;."'/ g z r '~.. ~.~J~\~. .~"~4::~-~._[f;Af!/:. _ .'/.".~./.'.-.~~~/ . /.._.-..--.-/-/.'.-1':>7../'\., CA~N~~~~~~~~ ~ ~ ~ \ ,--...... ... ( . ,/' ( . j Z . 0 \ '~ '.. ---_J '. ." __.__-)---___. i < () W , '-., ... . ,," .... /" _____~ I W W (,,___ . y../ /~. . _____--I I C Iii a. ~~eCC~-!J5/-.. " /) ..J 0 , . _-- 14u/-.' ,- ~ ~.::::___-/ ./ ,,19/ I'v .;.A 12" COMPACTED 6" TOPSOIL :::l ~ ./__. ...//' / 1.?O .____.---.r~J-/. /) CLAY BARRIER COMMON EXCAVATION 0 ;2 .--------- /_ 7 1/l,'O / (WEST SIDE EXISTING GROUND en '-./ .. / r.. .. . r1 ./~~:.:....:--------- OF BERM) _____, (.. /"'- I (/ "--. \..,.--! / '1",,'0 '"'\\ i / ( (-' -----,-" SUBCUT BASE OF BERM "'--",j () \! I l' BELOW EXISTING GROUND ( : \.~ BERM CROSS SECTION A-A , \\,/ ~~ \ "-- ::/ ('\ '--------~..--- . / g~~ ~~ . \ '_. / ... 11I10. ....0 . \ 2. /--, '1j"'g> ~e \ __-\ ... .-~/.--7=::..=---~....:::::.-_..-.. --',. I \. ~~i ~~ I \// ./;.-.--__~=_~::..---- -~./ ~ U ~ ~ _ r--.. A --..... _/"---" '\, _' . TOP ELEV.748.0 H i! ~ .~ (!) C z BOTTOM ELEV 7 45.0 ~ m ~ ,y)\" ~" X'Y.>;y~ ~ , ^ ^" ,~ ' Ie ~ COlli : WETLAND M'T~:~'ON SECTION B-B ...~ j I a 3 OF 5 SHEETS I PLAN VIEW SCALE: 1"=20' (j Ii ~~ ~ P" 22' ~ I " ) OFT 50 100 " ~ "' CL III FIELD STONE 8 , 0 D RIPRAP WfTYPE IV 5 00 z n n n n n 000 n GEOTEXTILE FABRIC "' > ., :>: . r DODO 2'l ~ ~ 000000000000000000000000 00000000 " " 000000000000000000000000 00000000 ~ ~Vl 0 . 000000000000000000000000 00000000 RIPRAP ELEV. VARIES ~ ~ 00000000000 0 ~o 0 0 00 0 00000000 r 14' 000000000000 0 000000 00000000 j ODODODOODDDOOO 000000 00000000 ~ 000000000000 DO 0000000 00000000 ~~~ 000000000000 DO 000000 00000000 0000-00000000 00000000000 00000000 3~~ .., 000000000 .~E. ~ 0 4' 00000000 ~a~-c: ~ SECTION C-C '" NOTES: ~ 0000000 D e~~~ 0000000 1.WEIR IS SYMETRICAL ABOUT CENTERLINE 0000000 SCALE: N.T.S. ~;~i 2. SEE SHEET 5 FOR CROSS SECTION B-B 0000000 ~5~~ Ii 3. BOTTOM ELEVATION FOR SHEET PILE 000000 !i 000000 ~~~ ALTERNATIVE SHOWN BLEOW. 0000000 FIELD STONE RIPRAP SCOUR BASIN ~ V1::l...l;; 0000000 WARP BOTTOM TOWARD :~~~ '" c 0000000 C EXISTING CHANNEL BOTTOM ~~~; 0 0000000 ~ 0000000 ~~;; 0000000 ;;;- 0000000 u~;:~ 0000000 00000000 ~H; ~ !j~~ E <( I- z 0 WEIR ELEV. 749.5 0 en WEIR ELEV. 747.0 ~ W TOP OF BERM ELEV. 750.0 WEIR ELEV. 746.5 TOP OF BERM ELEV. 750.0 0 Z WEIR ELEV. 747.5 W ::J Z ~ rx: <( I- :i: ..J en EXISTING GROUND Z Z BOTTOM ELEV. 740.0 <( 0 W BOTTOM ELEV.738.0 W 0 W C I- a. WARP RIPRAPTOWARD UJ ELEVATION VIEW EXISTING CHANNEL BOTTOM ..J 0 I- SCALE: 1"=20' ::J ~ 0 <( ::I: en 2' CL III FIELD STONE RIP RAP WfTYPE IV GEOTEXTILE FABRIC 25' ELEV 746.5 W"" I ; -16''[",VA"'" "-8 'I , g;~ ~~ ~ ~:gg. ~g . ~~.g -~ .'" . . . .' . .' """"wm_ :g ui~ ~o g 8.1 !~ ~ ~ ~ g ~'" RIPRAP WfTYPE IV ~~ -~ SECTION D-D GEOTEXTILE FABRIC U <,1 SECTION E-E 2' CL 111 FIELD STONE m RIPRAP WfTYPE IV SCALE: N.T.S. .... ~ SCALE: N.T.S. GEOTEXTILE FABRIC ~~lli . '" ~ ~ i WSB PROJECT NO. 1281-88 CITY PROJECT NO. 2005-7 4 OF 5 SHEETS 1'-6" ~~~~"4tt2'CLR. w ! ! 749.5 ----r- !_ ~ d w ~ '5 #9@12" O.C. #7 DOWELS " z @ 12' O.C. 8 ~ #5@16" O.C. !; ~ . ....J .(1') ct: 0 0 'I <()!: <( ARCHITECTURAL ~ ~ . 0:: (') > I SURFACE TREATMENT Z ~ ~ (SEE SPECIAL PROVISIONS) SEE BELOW FOR RIPRAP CONFIGURATION \'i J: !; u 8 ~,~ ~ J_ #5 DOWELS > '" ~ . ~ r-- @16'0.C. 3 ~ 0 C/) l' -. o SEE BELOW FOR RIPRAP BASIN ! ~ ~ D1MMENSIONS _ J ~ 3'-0" #7@12" O.C. t~~ ~ 5' '" #7@12" O.C. ~~~~ N o.n 10" ~_~w = 1 8-#5 x CO NT. ~~~: i.~ ,...... ~...8... J:!.! ~,.. ~~3a w J 740.0 ~g~; :5 -l ~~~: h ~ ~f:':! 1-#5xCONT. NOTES: ~~~~ ;g t;~ lio~~ ~ E2 ~ !;;! ELEV 738.5 1. HORIZONTAL REINFORCEMENTTO BE CONTINUED ~ [~i! t; 8 :;'!: THROUGH WALL CORNERS. SPLICES TO BE MINIMUM ~ ~ ~ ffi w LAP OF 24 INCHES. ! H ~ ~ 4'-011 2. REFER TO SPECIAL PROVISIONS FOR ARCHITECTURAL 10'-0" TREATMENT REQUIREMENTS. 3, SEE SHEET 4 FOR TOP OF WALL ELEVATIONS. <( I- z 0 ALTERNATE A -CONCRETE OUTLET STRUCTURE (SECTION 8-8) ~ ff3 SCALE: 1/4" = l' () Z W::l Z ~ 0:: <( I- ...I (J) ~ Z Z <( 0 W W () W c I:u D.. ...I 0 ~ ~ o <( :I: en STEEL SHEET PILE , NOTES: g~E ll~ Moct8 "";"j:: . ~ 1. STEEL SHEET PILlNG.ASTM A328, MIN. SECTION MODULUS =18.1 CU.INIFT. ~; ~ U . MINIMUM 3/8' THICKNESS,INTERLOCKING SHEETS {~~ ~ ~ 2. STEEL CAP PLATE. FY= 36,000 PSI (ASTM A36) i I ~ ; i .WELDS.E70ELECTRODES H ~I~ 3. DEPTH OF SHEET PILE VARIES ALONG WESTLENGTH. ~ ~ x ill o " ..... il'~ to I] : ALTERNATE B "SHEET PILE OUTLET STRUCTURE ~~ ! I SCALE: 1/4" = l' 1281-88 2005-7 SHEETS