~y~ ~j~a( ~i~:=~d ~:J: ~;:~tlple ,;~;tch 1 0/24/20 16 · -- Planning and BMPs for Large LUPs Tanya Bllezikjlan. P.E . QSD/P Michael B aker International Western Chapter IECA Construct i on Site Management Workshop October 2016 Projects are rarely 100% active at all times dozens or even Dlfflcult to complet1 dally vlw.1 5't1 Inspections May Mve multiple contractors on diff ere nt ngrrwnts under on e SWPPP :J segrMnts •nd multiple Access roads may be difficult or dangerous to travel Project may cross multiple types of terrain areas . and many laydown yards · --- Owner Considerations • Assig n QSD/P respo nsi b ili ty to the c on tractor or to a thi rd pa rty? • Assign to contractor reduces amount of work for owner • Assign to third party increases the amount of control for owner • Both have potential si gnificant cost and compliance implications • How to bid the work? The more information in the bid package, the better Include the SWPPP with the bid package Write VERY clear specs and include language holding the contractor responsible until t~e NOI.iupp,ond Require line item bids per unit cost(e.g ., per foot of silt fence , or per bag of bonded fiber matrix) • Cost management is essential to find the balance between compliance and budget conservation • Owner buy in is essential to project success The $2 ,000 SW PPP will not work for this type of project • Owner must back the QSO and QSP 1
~=~t~s:~!~:t~ ~U~P ~ : : :~:~:. : ~rig~;~.r~actor. ~o%~"ri~hf~fo~\~ 10/24/2016 QSD Considerations Stay involved throughout the pro ject. 1. 2. Ensure clear understanding of all areas to be disturbed, particularly those not on the gra din g plan s. 3, Coor dinate with b io lo gists and other environmental teams working on the project. 4. Consider each site as an individual pro ject for overhead construction. 5, For under g round work, consider challenges of trenches and topography. 6. Focus on re du cing land distur bance a nd preserving ex ts ting vege tatio n. 7. Determine final stabilization a~proach development using agencies Identify areas that can be closed out via COi as often as possible Thoroughly document pre-construction conditions Review the SWPPP. particularly construction preserva tion of vegetation, BMP installation En sure yards are maintained and kept neat Daily: site inspections are difficult to achieve on a long linear project Sampling may be difficult or unsafe during rain events if access roads are unpaved or steep. Document everything! Project Closeout • Coordinate with restoration team • SWPPP final stabilization may not work with habitat re storation plan • Coordinate with Regional Board Discuss closeout and final stabilizatio n plans in relation to restoration to ga in bu y tn I nvite to the site to demonstrate level of effort • Ensure contractor is aware of seasonal limits on seeding- do not hydroseed between February and October • Verify RUSLE2 calculations for final stabilization 2
10/24/2016 Challenges During Construction • Access roads Access to sampling locations • Road washout/safety due to rainfall/bad drainage design • Birds and other critters Access restrictions and need for monitor to accompany Nesting birds • Timing • Rainy season starts just as nesting season ends • Fire danger may close project sites -- Challenges During Construction • Contractor pushback Project team culture Communication • Commitment to SWPPP implementation and compliance • Lack of owner support Vegetation establishment • Seasonal seeding. poor soils , lack of water , poor weather . overcompaction Slow or poor regulatory coordination COis must be approved before next COi can be submitted • RB may distrust P.roject or owner , need to estabhsh good relationship Unanticipated issues Wrap Up and Questions • Long_ linear projects have a lot of unique elements to consider • All can be addressed, with good planning and dedication • CGP Review Issue #3 addresses much of this topic • http://www.waterboards.ca.gov/water issues/programs/stormwat er/docs/training/cgp _review_iss ue3 . pdf Questions? Tanya Bilezikjian, P.E. , QSD/P. Trainer of Record tanyab@mbakerintl. com Michael Baker International 3
~ ~gu7~e[ str~m 6/23/2015 ' 1 Project Examples , 1 - Ephemeral Tributary • Turf Reinforcement Mat to Rattlesnake • Erosion Control Blanket 1 I Creek Streambank • Rip · rap Toe Anchor Stabilization • Concrete Remo v al Ruxton Avenue • Triple Box Culvert Channel Conver.;ion I J • Gravel Bag Check Dams I Northwest Village • Channel Widening I Flattening Creek Restoration in • Riprap Drop Structures 1 Chollas Water.;hed - •Temporary K- Rail Check Dams Euclid /Market P""""'"" "" _...,., '~ Ephemeral Tributary to Rattlesnake Creek Streambank Stabilization - -- 1 project Back11m1md two severe erosion areas along the epherneral 0 s~·:J!s~ai~,:e~d Reinforce the channel to enhance funct100 ;md vatu~ of npanan streambank and ln· habitat$. 1
6/23/2015 Project Background - Erosion Area #1 Erosion Area #1 20-foot x 9-foot erosion Velocities were calculated to be between 9 and 14 feet per second. Eros ion Area 1 prior to temporary rlprap Erosion Area 1 after placement of temporary placement. 14 ton riprap. WC • l!CA CONSTltUCTIOfl SIU IU.tlAOUU:Jrtt WOJllUHO' I OCTOHll 2• , 2016 • '~- """'. 4 Project Background - Erosion Area # 2 1 Erosion Area #2 80 -foot x 13-foot erosion approximately Velocities were calculated to be between 6 and 16 fps. Eros i on area 2 prior to temporary K-Rail Erosion area 2 following placement of placement (lookingdownstreaml temporary K·Ratt (looking upstream) wc -u:c.A COHSflUC'HOH SIT[ MAJllA0t:M£HT WOltltlttOP I OCTOIO H , 10U r-·"" , . I Design Approach , - E XIST ING C ONDITIONS • • •• WC· ICCA. COfrlSTIUCTIOM SITI: M•OIAGEM!MT WOll.kSHOP I OCTOIU. U. 20U 2
~ "'"~._,._, ,~,. 6/23/2015 v i Design Approach Existing Channel Conditions Areas of concern: Erosion Areas 111 and #2 • Unreinforced channel cwves & existing erosion opposite the K·rail • Narrow channel in central reach (Temp K·rail location) I OCT OIU l • , lOl• WC· l[C .-, CO N JT ll UCTIO N SI Tl MAN• <i UICNT WOlKU~O, "'t.'-'"" "" '"""'" ' Design Approach Design Challenges High V elocities and Shear Stress Ex is ting 'Pillow Block' Retaining Wall Steep Slopes Narrowi ng Channel Adjacent Properties (including a structlJre) W( . l[C >. CO HSTllUCTtON SI U M>.N4GlMCMT WOlllUHO, I OCTOICll l• , 201 • ,,., Design Approach ·' pmoosed Bjppoaineertna So!utjon Channel Widening, L.'lying Slopes Back, Translt1ons Turf Reinforc ement Matting ( TRM ) w/ Riprap Toe Protection Riprap Extension Erosion Control Blanket ( ECB } W (.ll( ,t, CO NSTllUC TION SIT!: MANAGCMENT wou : s"o' I OC TOIU 26 , 20 1' 3
~ ~o~i~f~i~i~"cia~et~':; 6/23/2015 Environmental Permitting . Project Goals • Reinforce the channel to enhance function and values of riparian streambank and in-stream habitats. Permitting Agencies Army Corps of Engineers Regional Water Quality Control Board California Department Fish and Wildlife Environmental Design Considerations Biological Surveys • Biological Baseline Wildlife Surveys • Vegetation Surveys Tree Removal Survey CEQA Analysis Archaeological Assessments&. Monitoring Restoration Maintenance and Monitoring Plan WC ·lfC .t. CO"STltUCTION SIT( MAN"G[Mt:NT WOllKStlOI' I OCTOICR 2' , 20U ' Environmental Permitting Involve Resource Agencies Early Pre-application meeting with agencies Preliminary design Photo exhibit &. descriptive narrative with figures Collaborative Design • ~i~e~n~;~l~n~{~;~ti the habitat was substantially enhanced Persistence CDFW: Streambed Alteration Agreement ACOE: RGP 63 (Emergency)- RGP 70 (Bioengineering) or NWP 13 (Stabilization) RWQCB: 401Certification Priorities • Self-Mitigating Perm its!!! WC · lfC.A CONSUUCT!Ofrl SIU: MAN4G[M(HT WOlllUHOI' I OCTOIU 2', 2016 .. '-· ' Environmental Permitting I OCTOIU U , 1016 WC •l(C 4 COHSTll!JCTION SITE M4NAGl:Mt:NT WO~KSHOI' 4
~ 1 ~ C~struction ~ ~ 6/23/2015 ' ~ "''""M'"' Environmental Permitting .. Existing Vegetation Communities I ~ SHRUB PLANTING Pl.AN TV wc . tt:CA CON ST llUCTION llTl MANAGUICNT WOllKSHO, I ocroeu 26, JOU "' ' ' Phase J Proposed Slope Stabilization & Anchor System • Erosion Control Blanket and Turf Reinforcement Mat Layers • Gravel Backfill Bin • Riprap Toe Anchor I ocroeu 2•, iou WC · lfC,t. CONSTllUCTION SIT( MAMAG[M(NT WOllK$HOP . - - Construction Phase Proposed Structure Stabilization • Existing "Pillow Block" Retaining Wall • Proposed Modular Retaining Wall System • Retain Existing Residential Structures Existing Newly Extended 5
OCTOH~ ~ - nstruction ~ 1 6 6/23/2015 [ ~ Phase . Proposed Channel Ba nk Stabili zati on • Warp ed Win g Wall Transi ti on • Modular R etaining Wall Sy stem • TRM and ECB Pla cement and K ey -in wc . 1r:c:>. CONSTRUCTION SIT[ M.t..NA(IUl[lrtT WOii KS HOP I OCTOllU u . 20 u Construction Phase , Construc ti on Challe ng es Limited Construction Access Points • Minimal Channel Access Along Construction Corridor Residential Lot. Structures and Fencing Along Both Sides of Corridor • Limited Work Zone in Channel Bottom to Preserve Hardpan wc . u:c.-. COIUfll:UCTION SITl MilNAOUl[l'IT WOlllCSHOP I 0'1010 :U , ZOU ...... '" · Construction Phase WC · l[CA COHSTRUCTION SIT! MAJU.CU:ll!fHT WOU:SHOP I 2', 101• 6
6/23/2015 21 lBI WC ·l (Cll COHSTltUCTIOtl SITf: MAHAG[Mt:HT WOllXSHO, I OCTOHll U, 20 I' 7
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