Los Angeles County Department of Public Works Watershed Management Division

Transcription

1 CHAPTER FOUR REFERENCES Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 61

2 CHAPTER FOUR methods nd mechnisms A PRIORITY ACTIONS 1 Wter The gols nd ojectives estlished y the BCWTF (descried in Chpter 3) re intended to ddress the prolems nd issues of interest identified y the BCWTF nd chieve ecologicl helth. Becuse of the extent of urniztion, wide rnge of ctions will e necessry to improve the ecologicl helth of the wtershed. Potentil ctions re descried elow, orgnized y the hedings of wter, lnd, nd plnning. Following discussion of ech ction, list of stkeholders tht could implement the ction is provided. For tht list, the term cities refers to ll cities in the wtersheds, lthough for some ctions, specific cities re identified. For more complete list of stkeholders, refer to Chpter 6 (Stkeholder Commitment nd Funding). To improve ecologicl helth of the wtershed, progress towrds ll of the gols identified y the BCWTF will e necessry. However, since the chrge for the Tsk Force included selection nd prioritiztion of cost-effective est mngement prctices for chieving wter qulity improvement/hitt restortion gols, those ctions relted to improving wter qulity nd hitt re considered priority ctions for the purposes of this pln. GOAL A: IMPROVE QUALITY OF SURFACE WATER AND GROUNDWATER Ojective: Implement projects, BMPs, nd other methods to reduce pollutnt lods nd improve wter qulity, consistent with TMDL implementtion ACTION: Implement projects, BMPs, nd other methods to reduce the presence of contminnts in stormwter runoff To conform to the requirements of the federl Clen Wter Act nd the federl Costl Zone Act Reuthoriztion Amendments of 1990, the Stte of Cliforni hs developed the Nonpoint Source Progrm Strtegy nd Implementtion Pln ( ) (or PROSIP) which identifies ctions to reduce nonpoint pollution, nd compnion volume, the Cliforni Mngement Mesures for Polluted Runoff (CAMMPR) Review Document, which identifies rnge of mngement mesures for griculture, forestry, urn res, mrins nd recretionl oting, hydro- 62 Bllon Creek Wtershed Tsk Force

3 modifiction (including modifiction of strem chnnels, wter impoundments, nd stremnk erosion), nd wetlnds, riprin res nd vegetted tretment systems. Additionl informtion on sources of nonpoint pollution nd mesures to reduce nd/or tret polluted runoff is provided in the Cliforni Nonpoint Source Encyclopedi, developed y the Stte Wter Resources Control Bord. A comprehensive progrm to reduce stormwter pollution hs een estlished y the Stormwter nd Urn Runoff NPDES permit (Order No , CA ) issued to the County of Los Angeles (nd the incorported cities in the Wtershed), which regultes the dischrge of runoff municipl storm sewer systems (MS4s), or the storm drin. The permit prohiits non-stormwter dischrges into the storm drin system, limits dischrges to receiving wters tht would cuse or contriute to violtion of wter qulity stndrds, nd requires implementtion of Stormwter Qulity Mngement Progrm (SQMP) tht includes the use of Best Mngement Prctices (BMPs) to reduce dischrges of pollutnts, including metls, nutrients, pthogens, sediment nd trsh, which re identified on the 303(d) list for Bllon Creek nd ssocited wter odies. The SQMP includes seven progrms, which re summrized elow. The Industril/Commercil Fcilities Control Progrm covers industril nd commercil fcilities, including resturnts, utomoile service fcilities, retil gsoline outlets, utomoile delerships nd other federllymndted fcilities. The Development Plnning Progrm requires implementtion of Stndrd Urn Runoff Mitigtion Pln (SUSMP) for commercil developments on sites 1 cre or greter in re, utomotive repir shops, retil gsoline outlets, resturnts, home sudivisions with 10 or more homes, prking lots with 25 or more spces (or re greter thn 5,000 squre feet in re), single-fmily hillside residences, nd loctions within, or directly djcent, or dischrging to, environmentlly sensitive res. In ddition, sustntil redevelopments (resulting in the cretion of more then 5,000 squre feet of impervious surfce) re lso suject to SUSMP requirements. The Development Plnning Progrm nd SUSMP requirements include: minimize impcts of stormwter on nturl dringes nd wter odies; mximize pervious surfces to llow percoltion of stormwter to the ground; minimize the quntity of stormwter to impervious surfces nd the storm drin system, provide pproprite permnent mesures to reduce pollutnt lods; control post-development pek runoff to prevent erosion in nturl dringes; conserve nturl res; minimize pollutnts of concern; protect slopes nd chnnels; provide storm drin stenciling nd signge; minimize pollution from prking lots using tretment control BMPs nd good housekeeping prctices; proper design of storge res, loding dock res, repir ys, vehicle/equipment wsh res, gsoline fueling res, nd prking res (to minimize conveynce of pollutnts to storm drin systems); proper design nd mintennce of BMPs to reduce vector reeding (e.g., mosquitoes); require BMPs to meet design stndrds nd/ or numericl design criteri; nd provide evidence of BMP mintennce. In Septemer 2002, the County of Los Angeles prepred mnul for SUSMP preprtion entitled Development Plnning for Stormwter Mngement, which is ville on-line (refer to Chpter 8 References) The Development Construction Progrm requires control of runoff from construction sites through comintion of BMPs, inspections, nd for projects over 1 cre in re, preprtion of Stormwter Pollution Prevention Progrm (SWPPP), per the Construction Activities Stormwter Generl Permit (Order No DWQ). Depending on the site chrcteristics, the SWPPP my include mesures to minimize distured res, stilize distured res, protect slopes nd chnnels, control the site perimeter, retin sediment on site, prctice good housekeeping, nd contin mterils nd wstes. The Illicit Connections nd Illicit Dischrges Elimintion Progrm requires the County nd the cities to: trck nd Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 63

4 mp ll illicit connections nd dischrges to the storm drin system; trin employees in methods of identifiction, investigtion, termintion, clening of illicit connections nd dischrges; screen storm drin systems for illicit connections; investigte nd determine sources, nture nd volume of dischrge nd responsiility prty for illicit connections; terminte illicit connections using enforcement uthority; respond to illicit dischrges with ctivities to te, contin, nd clen up within one usiness dy of discovery; nd investigte illicit dischrges nd tke enforcement ction, s pproprite during or following continment. The Pulic Agency Activities Progrm consists of mintennce, inspection, nd response to minimize stormwter impcts from pulic gency ctivities. These include mngement of sewerge systems (including overflow nd spill prevention), construction ctivities, vehicle mintennce/mteril storge fcilities/ corportion yrds, lndscpe nd recretionl fcilities, prking fcilities, storm drins, streets nd rods, nd emergency procedures. The Pulic Informtion nd Prticiption Progrm requires mesures to increse wreness, chnge ehvior, nd involve the pulic in mitigting the impcts of stormwter pollution. The Cliforni Stormwter Qulity Assocition hs developed four stormwter Best Mngement Prctice Hndooks to provide generl guidnce for selecting nd implementing BMPs to reduce pollutnts in runoff from (1) New Development & Redevelopment sites; (2) Construction sites; (3) Industril & Commercil fcilities; nd (4) Municipl opertions. The hndooks descrie plnning techniques for stormwter pollution prevention nd provide informtion on wide rnge of BMPs, ggregted into vrious ctegories for ech hndook, including erosion nd sediment control, site nd mteril mngement, source control, nd tretment control mesures. For the purposes of this pln, BMPs cn e grouped sed on the generl technique used, nd include: storge (multi-use retention sin, cistern, extended detention sins), underground retention/infiltrtion, nd underground detention), infiltrtion (porous pvement nd dry well), filtrtion (wetlnd systems, ioretention, ctch sin inserts nd medi filtrtion), conveynce (vegetted swle or sin), prctices (tree plnting, reduce impervious surfces, mulching, stormwter-supplied irrigtion, reduce directly connected impervious surfces, source control, cquisition or reloction, flood proofing, flood wrning, nd policies or ordinnces) nd outrech (pulic eduction). The Countywide Monitoring Progrm requires mesures to ssess receiving wter impcts, identifiction of sources of pollution, evlution of BMPs, nd mesure of longterm trends in mss emissions. The County of Los Angeles Deprtment of Pulic Works hs estlished the BMP Tsk Force to serve s n ongoing forum to fcilitte the selection, implementtion nd finncing of effective BMPs through: dt gthering, nlysis, nd exchnge; stkeholder coordintion; nd outrech. The Tsk Force mintins wesite (refer to Chpter 8 References) tht provides informtion out BMPs nd the ctivities of the Tsk Force. As noted in Chpter 1 (Bckground), the Snt Monic By Restortion Commission initited Bllon Creek BMP Work Group, to implement methodology for selection of BMPs for the Bllon Creek Wtershed (currently in progress). Concurrently, Proposition 13- funded project will develop pln for instlltion of suite of BMPs in n individul suwtershed nd monitor the effectiveness of those BMPs in treting nd/or reducing 303(d) list pollutnts. More detils on BMPs re provided in the following section (Best Mngement Prctices). In ddition to implementtion of BMPs, vrious projects hve the potentil to reduce the presence of pollutnts in stormwter, including those tht increse or restore 64 Bllon Creek Wtershed Tsk Force

5 open spce, reduce impervious surfces, or tret stormwter. The concept of diverting stormwter in the Hyperion Tretment Plnt operted y the City of Los Angeles hs een the suject of severl proposls, lthough the volume of wter tht must e treted nd the timing of delivery (s the mjority of excess cpcity is ville during the night) limit the pplicility of this concept. The project inventory included in this Chpter includes numerous projects tht would improve wter qulity. In ddition to projects, other progrms lso hve the potentil to improve wter qulity, such s the Air Qulity Mngement Pln for the South Cost Air Bsin, which hs the potentil to reduce eril deposition of certin contminnts. Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, community-sed orgniztions, nd individuls ACTION: Implement projects, BMPs nd other methods to reduce volume of stormwter runoff certin pollutnts, unless pollutnt lods re lso reduced. Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, nd individuls ACTION: Instll filtrtion devices to intercept contminnts t entrnce to storm drins With limited exceptions, once contminnt reches storm drin, it is conveyed directed to Bllon Creek nd Snt Monic By. To reduce the introduction of contminnts into the storm drin system, filtrtion device could e instlled t the entrnce to storm drin (e.g., t the elow grde ctch sin found on mny storm drins). Depending on the efficiency of the filtrtion device (e.g., the size of mteril retined) nd the frequency of mintennce (s such devices cn ecome clogged), the extent of cpture cn e considerle. To implement the Trsh TMDL, filtrtion devices my e instlled t mny ctch sins. One of the difficulties in meeting current nd future TMDLs will e treting the enormous volumes of stormwter ssocited with mjor rinfll events. One possile strtegy would e to implement projects, BMPs nd other methods to reduce the volume of stormwter. BMP ctegories tht hve the potentil to reduce the volume of stormwter runoff include storge, infiltrtion, nd to lesser extent, filtrtion, conveynce, prctices, nd outrech. In ddition, the implementtion of SUSMPs for new development nd sustntil redevelopment projects lso hs the potentil to reduce runoff volumes. Expnsion of SUSMP requirements (e.g., reducing the size of development suject to the requirements) could further reduce runoff volumes. It should e noted for some contminnts, for given unit of pollutnt, the lrger the volume of runoff, the lower the resultnt concentrtion. Thus reducing the volume of stormwter runoff could increse the concentrtion of Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, nd individuls ACTION: Instll in-line tretment systems in storm drins nd/or chnnels Once stormwter hs entered the storm drin network, contminnts could e removed during conveynce (efore reching Bllon Creek) y the instlltion of n in-line tretment device or mechnisms. These could include filtrtion devices, storge or detention fcilities, constructed wetlnds, or other methods. Given the size of the wtershed, opportunities for in-line tretment my e extensive; however, the ccessiility of the storm drin nd the vilility of spce to ccommodte the tretment device my limit pplicility. Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 65

6 Los Angeles County, cities nd other entities tht own nd operte storm drin systems trgeted if the source re for those pollutnts could e redily identified. The results of this effort should e incorported into this Pln. ACTION: Instll end-of-pipe tretment systems on storm drins nd/or chnnels It my not e possile to chieve pplicle wter qulity stndrds with source reduction, filtrtion t the entrnce to storm drins nd in-line tretment systems. Prior to dischrge into Bllon Creek, end-of-pipe tretment systems or devices could e instlled to reduce the lod of pollutnts tht enter the Creek nd Snt Monic By. These systems could e in the form of nturl systems (e.g., constructed wetlnds), filtrtion devices (such s continuous deflection seprtors), or wter tretment nd recycling plnts (such s the City of Snt Monic s Urn Runoff Recycling Fcility or SMURRF). Los Angeles County, cities nd other entities tht own nd operte storm drin systems ACTION: Implement the Community-Bsed Monitoring Progrm The Community-Bsed Monitoring Progrm included in Chpter 5 includes wter-qulity monitoring elements, which would trck progress towrds meeting pplicle wter qulity stndrds. Los Angeles Regionl Wter Qulity Control Bord, Los Angeles County, cities, nd community-sed orgniztions ACTION: Develop comprehensive mp of ll storm drins, culverts nd outflls Currently, there is no comprehensive mp of the Bllon Creek dringe network, which mkes it difficult to link specific outflls on Bllon Creek (e.g., where pollutnt concentrtions my e elevted) to the precise upstrem re connected to tht drin. Implementtion of mesures to reduce pollutnts could e more effectively Los Angeles County, cities, nd communitysed orgniztions ACTION: Consider wtershed-sed NPDES permits Currently, one single NPDES permit covers most of the municipl seprte storm sewers in Los Angeles County. Future permits could e developed on the sis of individul wtersheds (e.g., Bllon Creek), which my fcilitte coordintion etween relevnt jurisdictions nd focus efforts on progrms nd prctices tht re relevnt to individul wtersheds. Los Angeles Regionl Wter Qulity Control Bord ACTION: Complete the Lower Bllon Creek Ecosystem Restortion Study As result of the completion of the Mrin del Rey nd Bllon Creek Fesiility Study nd the identifiction of locl sponsors, the Army Corps of Engineers is working to refine the scope of work for the Restortion Study, which will evlute options to reduce sedimenttion t the Creek entrnce nd restore the lower portions of Bllon Creek. US Army Corps of Engineers ACTION: Implement the Air Qulity Mngement Pln for the South Cost Air Bsin Some contminnts in stormwter runoff nd dry wether flow re the result of eril deposition of ir pollutnts. Implementtion of the Air Qulity Mngement Pln for the South Cost Air Bsin will improve ir qulity nd reduce eril deposition of ir 66 Bllon Creek Wtershed Tsk Force

7 pollutnts nd therey contriute to improved surfce wter qulity. South Cost Air Qulity Mngement District Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, nd individuls Ojective: Minimize dry wether urn runoff dischrge into wterwys nd the By ACTION: Implement BMPs nd projects to reduce contminnts in dry wether flows Similr to stormwter, dry wether flows contin vriety of contminnts tht degrde wter qulity. Vrious BMPs nd projects could e implemented to reduce the presence of surfce contminnts tht my e wshed into the storm drin system. Applicle BMP types tht my reduce the presence of contminnts in dry wether flow include storge, infiltrtion, filtrtion, conveynce, prctices, nd outrech Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, nd individuls ACTION: Implement BMPs nd projects to reduce volume of dry wether flows Historiclly, dry wether flows in Bllon Creek were miniml. Over time, irrigtion of lndscping nd other uses of imported wter hve significntly incresed dry wether flows. One potentil strtegy to meeting pplicle wter qulity stndrds would e to reduce the volume dry wether flows, through comintion of BMPs, including storge, infiltrtion, filtrtion, conveynce, prctices nd outrech. As noted ove for stormwter, unless pollutnt lods re reduced, decresing the volume of dry-wether runoff could result in n incresed concentrtion of some pollutnts. In ddition, some freshwter input into the Bllon Creek estury my necessry to provide suitle conditions for qutic hitt. Actions: Implement BMPs nd projects to intercept contminnts t the entrnce to storm drins, instll in-line tretment systems, nd instll end-of-pipe tretment systems These ctions for stormwter were descried ove nd my lso e pplicle for dry wether flows. Los Angeles County, cities nd other entities tht own nd operte storm drin systems Ojective: Achieve fishle, swimmle wter qulity stndrds in Bllon Creek ACTION: Estlish, implement, nd monitor TMDLs As noted in Chpter 2, TMDL for trsh in Bllon Creek hs lredy een estlished (long with wetwether pthogen TMDL for Snt Monic By nd cteri TMDL for Mother s Bech in Mrin del Rey); however, the mjority of TMDLs for the Wtershed hve yet to e estlished. To estlish TMDLs, develop wste lloctions, nd suggest effective implementtion strtegies, dditionl reserch on pollutnt concentrtions, sources, geogrphic distriutions, nd BMP effectiveness is needed. The City of Los Angeles hs proposed to tke the led on stkeholder-sponsored development of future TMDLs. Once the TMDL is estlished, NPDES permit holders will e required to development implementtion plns nd conduct wter qulity monitoring. The trsh TMDL provides for 10- yer implementtion schedule (with possile two yer extension), lthough 20-yer implementtion schedule my e suggested for other TMDLs. US Environmentl Protection Agency, Stte Wter Resources Control Bord, Los Angeles Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 67

8 Regionl Wter Qulity Control Bord, federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, nd individuls Ojective: Improve wter qulity in Snt Monic By Actions: Estlish, implement, nd monitor TMDLs (nd ll wter qulity-relted ctions listed ove) Implementtion of TMDLs nd ll of the wter qulity mesures ctions identified ove hve the potentil to improve wter qulity in Snt Monic By. Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, nd individuls GOAL B MAINTAIN FLOOD PROTECTION Ojective: Implement incentives to encourge new nd existing developments to detin stormwter on site to reduce runoff ACTION: Implement SUSMPs on new development nd redevelopment As discussed ove, implementtion of SUSMPs could reduce the volume of runoff from individul sites, nd cumultively reduce stormwter dischrge in Bllon Creek. Los Angeles County nd cities ACTION: Consider expnsion of SUSMP requirements As discussed ove, SUSMPs re currently pplicle to commercil developments on sites of 1 cre or greter, utomotive repir shops, retil gsoline outlets, resturnts, home sudivisions with 10 or more homes, prking lots with 25 or more spces (or greter thn 5,000 squre feet), single-fmily hillside residences, nd loctions within or directly djcent or dischrging to environmentlly sensitive res. If these thresholds were reduced (e.g., fewer squre feet, housing units or impervious re), dditionl prcels would e covered, nd runoff volumes could e further reduced. In ddition, it is not cler whether federl nd stte fcilities nd school districts re covered y current requirements. Los Angeles Regionl Wter Qulity Control Bord 68 Bllon Creek Wtershed Tsk Force

9 Ojective: Implement pln to utilize nonstructurl flood protection projects to the mximum extent fesile Actions: Implement BMPs to reduce stormwter runoff, implement SUSMPs for new development nd sustntil redevelopment, nd expnd SUSMP requirements As discussed ove, vrious BMPs hve the potentil to reduce stormwter runoff volumes, or to dely pek runoff, nd my employ nonstructurl methods. In ddition, SUSMPs my lso reduce runoff vi nonstructurl methods. Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles County, cities, NPDES point source dischrgers, nd individuls ACTION: Study nonstructurl flood protection opportunities Ojective: Reduce the volume nd velocity of stormwter runoff Actions: Implement BMPs nd projects to reduce stormwter runoff, implement SUSMPs, expnd SUSMP requirements, nd study nonstructurl flood protection Implementtion of BMPs nd project tht reduce stormwter runoff nd implementtion of SUSMPs hve the potentil to reduce the volume nd velocity of stormwter runoff. Expnding SUSMPs requirements could result in further reductions. A fesiility study to identify nonstructurl flood control mesures could increse interest in such methods nd encourge gencies nd cities to incorporte such mesures into future projects. Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles Regionl Wtershed Qulity Control Bord, Los Angeles County, cities, NPDES point source dischrgers nd individuls Over time, s BMPs nd SUSMPs re implemented, s in-line or end-of-pipe wter qulity tretment systems re instlled, s strems re dylighted, nd riprin vegettion is plnted long Bllon Creek nd triutries, nonstructurl flood protection methods my ecome more prevlent. To ssist in fostering such prctices, study of nonstructurl flood protection opportunities could identify cndidte sites, provide exmples of relevnt projects in other wtersheds, nd provide n ssessment of the fesiility of implementing such methods in the Wtershed. US Army Corps of Engineers, Los Angeles County, colleges & universities, communitysed orgniztions, nd the Bllon Creek Wtershed Tsk Force Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 69

10 GOAL C RESTORE HYDROLOGIC FUNCTION TO BALLONA CREEK AND TRIBUTARIES WHERE FEASIBLE Ojective: Restore tidl flushing to lgoons nd wetlnds where consistent with flood protection ojectives ACTION: Improve tidl flushing to Bllon Wetlnds After mny yers of study, new tidl gtes were instlled t two loctions in the Bllon Wetlnds, which improved tidl flushing in this re. As prt of future restortion of the wetlnds, it is ssumed tht tidl flushing will e improved to lrger re, which would improve qutic nd esturine hitt in this re. Costl Conservncy, Los Angeles County, Los Angeles City Ojective: Restore nturl hydrologic conditions in strem chnnels where fesile ACTION: Study potentil opportunities to dylight nd/or restore current/historic strem chnnels The Seeking Strems study identified opportunities to dylight historic strem chnnels in the upper wtershed. The fesiility of implementing the recommendtions of tht report could e ddressed, nd other cndidte strems in other portions of the wtershed could e identified. US Army Corps of Engineers, Costl Conservncy, Los Angeles County, Los Angeles City, colleges nd universities, communitysed orgniztions nd individuls ACTION: Improve/restore tidl flushing to Del Rey/ Bllon Lgoon, nd Venice Cnls Tidl flushing in the Del Rey Lgoon nd Bllon Lgoon re oth constrined, due to the instlltion of gtes to reduce flooding or the presence of sediment tht reduces tidl flow. A proposed project to improve tidl flushing in the Bllon Lgoon (long with other improvements) is currently on hold. Improved tidl flushing of the Del Rey Lgoon could e coordinted with restortion of the Bllon Wetlnds. Costl Conservncy nd Los Angeles City 70 Bllon Creek Wtershed Tsk Force

11 GOAL D OPTIMIZE WATER RESOURCES TO REDUCE DEPENDENCE ON IMPORTED WATER Ojective: Expnd wter conservtion progrms ACTION: Develop wtershed-wide wter udget To pprecite the vlue of wter conservtion, development of wter udget for the Bllon Creek Wtershed should e developed y mesuring nd estimting wter inputs (precipittion, groundwter inflow, nd imported wter) nd output, including groundwter rechrge, stormwter dischrge, wstewter genertion, nd evpotrnspirtion y plnts). Colleges nd universities, with the ssistnce of Los Angeles County, cities, utility gencies, nd community-sed orgniztions ACTION: Expnd pulic eduction nd outrech on wter conservtion Following the drought in the 1980s, pulic eduction nd outrech relted to wter conservtion ws commonplce, ut is no longer mjor focus for most wter gencies. While previous efforts focused on scrce supplies nd the high cost of imported wter, inclusion of wtershed stewrdship theme could expnd pulic interest in such prctices. Stte Deprtment of Wter Resources, Los Angeles County, cities, utility gencies, community-sed orgniztions, nd individuls ACTION: Continue retes nd technicl ssistnce for wter conservtion Some wter gencies provide finncil incentives for the instlltion of ultr-low-flush toilets nd wter efficient wshing mchines, technicl ssistnce progrms for usiness nd industry, nd lrge lndscpe irrigtion efficiency progrms. Such progrms help reduce dependence on imported wter nd should e continued. Stte Deprtment of Wter Resources, cities with utility deprtments, nd utility gencies ACTION: Encourge expnsion of wter conservtion progrms Dry wether runoff is mjor source of contminnts in Bllon Creek. Expnsion of wter conservtion progrms relted to lndscpe irrigtion nd other wsteful uses of wter (e.g., wshing, insted of sweeping drivewys) would reduce dependence of imported wter, runoff the volume of dry wether runoff, nd ssist in meeting TMDL requirements. Stte Deprtment of Wter Resources, Stte Wter Resources Control Bord, Los Angeles Regionl Wter Qulity Control Bord, Los Angeles County, cities, utility gencies, community-sed orgniztions, nd individuls Ojective: Extend the distriution nd rnge of uses of reclimed wter ACTION: Extend recycled wter distriution system from Hyperion Tretment Plnt The Hyperion Tretment Plnt trets pproximtely 340 million gllons per dy of sewge, yet only smll portion of the treted wter is recycled for lndscpe irrigtion nd industril use. Although the Ply Vist development uses recycled wter for lndscpe irrigtion, the distriution network could e extended to serve other portions of the Wtershed. Los Angeles Regionl Wter Qulity Control Bord nd City of Los Angeles Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 71

12 ACTION: Site end-of-pipe tretment fcilities t loctions in proximity to loctions tht cn utilize recycled wter As prt of tretment trin for runoff, end-of-pipe tretment fcilities, similr to the SMURRF my e instlled long Bllon Creek or other mjor triutries. To the extent fesile, siting of such fcilities should consider the proximity of pulic or other mjor lnd uses (e.g., schools, shopping centers) tht could utilize recycled wter for lndscping or other purposes. Los Angeles County nd cities ACTION: Provide incentives for on-site tretment nd reuse of reclimed wter Some lrger scle commercil fcilities hve incorported on-site tretment systems for wstewter (e.g., the Wter Grden in Snt Monic). The cities nd Los Angeles County should consider providing incentives for such systems, which would reduce wstewter dischrge nd dependence on imported wter. Los Angeles County nd cities Ojective: Mximize on-site collection of stormwter for irrigtion nd percoltion Federl, stte, nd regionl gencies tht operte fcilities in the wtershed, Los Angeles Regionl Wtershed Qulity Control Bord, Los Angeles County, cities, NPDES point source dischrgers nd individuls Ojective: Estlish network of stormwter detention sites ACTION: Study nonstructurl flood protection opportunities As discussed ove, study of nonstructurl flood protection opportunities could identify cndidte sites for stormwter detention, provide exmples of relevnt projects in other wtersheds, nd provide n ssessment of the fesiility of implementing such methods in the Bllon Creek Wtershed. US Army Corps of Engineers, Los Angeles County, colleges & universities, communitysed orgniztions, nd the Bllon Creek Wtershed Tsk Force Ojective: Expnd groundwter rechrge fcilities ACTION: Study nonstructurl flood protection opportunities Actions: Implement BMPs nd projects to reduce stormwter runoff, implement SUSMPs, nd tighten SUSMP requirements Implementtion of BMPs nd project tht reduce stormwter runoff nd implementtion of SUSMPs hve the potentil to increse groundwter rechrge, which could reduce dependence on imported wter. Expnding SUSMP requirements could result in further reductions. In ddition to on-site progrms, opportunities for regionl collection nd distriution systems should lso e considered. A study of nonstructurl flood protection opportunities could likely identify potentil sites for groundwter rechrge. US Army Corps of Engineers, Los Angeles County, colleges & universities, communitysed orgniztions, nd the Bllon Creek Wtershed Tsk Force 72 Bllon Creek Wtershed Tsk Force

13 Costl Conservncy in conjunction with vrious federl, stte, nd locl entities nd orgniztions ACTION: Develop nd implement pln to improve Oxford Bsin The Oxford Flood Control Bsin hs een the suject of much discussion out how to improve wter qulity nd hitt, ut no detiled proposl hs een developed. A conceptul proposl for restortion of the sin is included in the list of Demonstrtion s included in this Chpter. Costl Conservncy nd County of Los Angeles ACTION: Implement projects to improve qutic hitt nd ner-shore vegettion in Del Rey Lgoon nd Bllon Lgoon GOAL E IMPROVE AQUATIC, ESTUARINE AND RIPARIAN HABITAT QUALITY AND QUANTITY The City of Los Angeles hs developed proposls for restortion of qutic nd ner-shore vegettion for Del Rey Lgoon nd to improve tidl flushing nd plnt ntive vegettion in the Bllon Lgoon. Ojective: Improve qutic, esturine nd slt mrsh hitt in the Bllon Creek estury system, including the Bllon Wetlnds, Bllon Lgoon, Ply del Rey Lgoon, nd ssocited wter odies, y restoring tidl flushing, removl of invsive species, nd restortion of ntive hitt ACTION: Develop nd implement pln to restore Bllon Wetlnds As noted in Chpter 1, the Stte of Cliforni hs recently cquired 483 cres of the Bllon Wetlnds (in Ares A nd B), in ddition to the 64 cres previously cquired (Are C). Although portion of re B is in reltively nturl stte nd is suject to some tidl flushing, comprehensive pln for restortion of the other lnds hs yet to e estlished. Costl Conservncy nd City of Los Angeles Ojective: Restore riprin hitt long section of triutry strem ACTION: Study potentil opportunities to dylight nd/or restore current/historic strem chnnels As noted ove, the fesiility of implementing the recommendtions of the Seeking Strems study could e ddressed, nd cndidte strems in other portions of the wtershed could e identified. Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 73

14 US Army Corps of Engineers, Los Angeles County, cities, nd colleges & universities Ojective: Estlish self-sustining popultions of key indictor species in the Bllon Wetlnds nd the ssocited estury system ACTION: Study potentil indictor species for Bllon Wetlnds As noted in Chpter 2, severl sensitive species re found in the Bllon Wetlnds, nd one or more of these could serve s indictor species (e.g., Belding s svnnh sprrow), however dditionl study my e necessry to specify wht threshold conditions (e.g., size of forging re) must e provided to ssure self-sustining popultion. Cliforni Deprtment of Fish & Gme nd colleges & universities Ojective: Restore riprin hitt long Bllon Creek where fesile ACTION: Introduce riprin vegettion long Bllon Creek where fesile Limited riprin vegettion long Bllon Creek hs een plnted recently (e.g., t Sepulved Boulevrd), with dditionl plntings proposed in conjunction with ike pth improvements y the MRCA. As the chnnel is lined with concrete or rip rp, ny such plntings my e limited y the sence of typicl hydrologic conditions long riprin corridors, however, the introduction of vegettion long the creek cn serve s demonstrtion projects nd mimic historicl conditions. Los Angeles County, Los Angeles City, nd Culver City Ojective: Dylight triutry strems nd restore riprin hitt wherever fesile Ojective: Estlish self-sustining popultions of key indictor riprin species long triutries ACTION: Study potentil indictor species for riprin hitt Due to the lck of riprin hitt in the wtershed, there re currently no popultions of sensitive species tht might serve s indictor species. However, riprin hitt in other nery costl res does include popultions of species tht might serve s cndidte species (e.g., southwestern willow flyctcher). A study could identify potentil cndidte species nd the requisite threshold conditions (e.g., liner length of strem corridor) Cliforni Deprtment of Fish & Gme nd colleges & universities ACTION: Study potentil opportunities to dylight nd/or restore current/historic strem chnnels As noted ove, the fesiility of implementing the recommendtions of the Seeking Strems study could e ddressed, nd cndidte strems in other portions of the wtershed could e identified. US Army Corps of Engineers, Los Angeles County, cities, nd colleges & universities 74 Bllon Creek Wtershed Tsk Force

15 ACTION: Identify opportunities for hitt restortion in Snt Monic Mountins (within the Wtershed) Although some res of reltively undistured hitt in tht portion of the Snt Monic Mountins re preserved s pulic lnd, other undeveloped res remin in privte ownership nd my wrrnt cquisition to provide hitt corridors or preserve open spce. Snt Monic Mountins Conservncy nd colleges & universities Ojective: Expnd protection of high-qulity hitt nd ecologiclly-significnt res 2 Lnd GOAL A IMPROVE HABITAT QUALITY, QUANTITY AND CONNECTIVITY Ojective: Restore hitt wherever fesile on pulicly owned lnd in the Bldwin Hills, the Snt Monic Mountins, nd the Hollywood Hills, including removl of invsive species nd restortion of ntive uplnd hitts, where consistent with use ACTION: Implement hitt restortion elements of the Bldwin Hills Mster Pln ACTION: Develop nd implement restortion pln for Bllon Wetlnds As discussed ove, restortion pln for the Bllon Wetlnds hs yet to e developed. Costl Conservncy in conjunction with vrious federl, stte, nd locl entities nd orgniztions ACTION: Implement hitt restortion elements of the Bldwin Hills Mster Pln As discussed ove, the Bldwin Hills Mster Pln includes proposls for restortion of hitt nd cretion of linkges to Bllon Creek. The Bldwin Hills Prk Mster Pln identifies opportunities for restortion of hitt, including the cretion of wildlife corridors within the Bldwin Hills nd to Bllon Creek, which runs just north of the Bldwin Hills Scenic Overlook. Cliforni Deprtment of Prks nd Recretion nd Bldwin Hills Conservncy Cliforni Deprtment of Prks nd Recretion nd Bldwin Hills Conservncy Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 75

16 Ojective: Estlish self-sustining popultions of key indictor riprin species triutry strems ACTION: Study indictor species for riprin hitt As discussed ove, study could identify cndidtes for indictor species nd determine threshold conditions. Cliforni Deprtment of Fish & Gme nd colleges & universities Ojective: Develop nd implement hitt monitoring progrms As discussed ove, plns nd projects for restortion of hitt in vrious loctions of the wtershed hve een, or will e, developed. With improved hitt t those loctions, the cretion of linkges vi strem corridors could result in vile hitt corridors from the Mountins to the By. Costl Conservncy, Bldwin Hills Conservncy, Snt Monic Mountins Conservncy, Los Angeles County, cities, nd colleges & universities ACTION: Implement the Community-Bsed Monitoring Progrm The Community-Bsed Monitoring Progrm included in Chpter 5 includes hitt monitoring elements. Los Angeles Regionl Wter Qulity Control Bord, Los Angeles County, cities, Bldwin Hills Conservncy, colleges & universities nd community-sed orgniztions Ojective: Mintin, restore, nd enhnce wildlife corridors s continuous linkges from the Snt Monic Mountins to Bldwin Hills, Bllon Wetlnds, nd Snt Monic By Actions: Develop nd implement pln for restortion of the Bllon Wetlnds, implement projects to restore hitt in the Del Rey Lgoon nd Bllon Lgoon, develop nd implement project for restortion of the Oxford Flood Control Bsin, implement the Bldwin Hills Mster Pln, identify opportunities for hitt restortion in the Snt Monic Mountins, nd study opportunities to dylight nd/or restore strems GOAL B IMPROVE ACCESS TO OPEN SPACE AND RECREATION FOR ALL COMMUNITIES Ojective: Increse pulic open spce y trgeted, prioritized progrms of lnd cquisition ACTION: Implement the Bldwin Hills Mster Pln As discussed ove, the Bldwin Hills Mster Pln proposes cquisition of dditionl lnd for pulic open spce. 76 Bllon Creek Wtershed Tsk Force

17 Cliforni Deprtment of Prks nd Recretion nd Bldwin Hills Conservncy Cliforni Deprtment of Prks nd Recretion nd Bldwin Hills Conservncy ACTION: Acquire dditionl open spce ACTION: Acquire dditionl prklnd Mny neighorhoods in the wtershed hve limited open spce, mostly in the form of existing pulic prks. Trgeted cquisition of pocket prks, lnd long Bllon Creek nd triutries, nd undeveloped lnds in the Snt Monic Mountins could expnd pulic open spce. Ntionl Prk Service, Cliforni Deprtment of Prks nd Recretion, Los Angeles County, cities, nd community-sed orgniztions Ojective: Coordinte open spce plnning, lnd cquisition nd mngement mong jurisdictions ACTION: Pursue joint mngement of nturl resources in Lower Bllon Creek re As discussed in Chpter 1, the City of Los Angeles, other pulic gencies, nd community-sed orgniztions re discussing possile structure for joint mngement of nturl resources in the lower Bllon Creek re. If successful, this effort could serve s model for other res or nturl resources in the Wtershed. US Army Corps of Engineers, Costl Conservncy, Los Angeles County, Cities of Los Angeles, nd Culver City, nd community-sed orgniztions Ojective: Accommodte rnge of ctive nd pssive recretionl uses ACTION: Implement Bldwin Hills Mster Pln The Bldwin Hills Mster Pln includes proposls for oth ctive nd pssive recretion. Vcnt prcels, lnd long Bllon Creek or triutries, nd undeveloped prcels in the Snt Monic Mountins could e cquired to provide pocket prks or expnd existing open spce nd provide opportunities for oth ctive nd pssive recretion. Ntionl Prk Service, Cliforni Deprtment of Prks nd Recretion, Los Angeles County, cities, nd community-sed orgniztions ACTION: Develop nd implement restortion pln for the Bllon Wetlnds Eventul restortion of the Bllon Wetlnds is likely to provide opportunities for pssive recretion, such s wildlife viewing, hiking, nd icycling. Costl Conservncy in conjunction with vrious federl, stte, nd locl entities nd orgniztions Ojective: Improve ccess to open spce sed on popultion density, distnce, nd trvel time for underserved communities ACTION: Encourge expnsion of open spce in underserved res Mny neighorhoods in the wtershed hve limited open spce. Trgeted cquisition in underserved res could provide pulic open spce, in the form of new pocket prks or expnsion of existing prks. Cliforni Deprtment of Prks nd Recretion, Los Angeles County, cities, nd community-sed orgniztions Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 77

18 Ojective: Connect open spces to trnsit ccess points ACTION: Encourge pulic trnsit opertors to provide service to open spce res Although some pulic open spces re locted on or ner mjor streets tht hve trnsit service, mny prks nd open spces re locted in res tht re not served y trnsit. Although weekdy trnsit service my need to remin focused on providing service for commuters, lterntive trnsit routes could e creted to serve pulic open spce on weekends, holidys or trditionl vction periods. Cltrns, Los Angeles County Metropolitn Trnsit Authority, cities with municipl trnsit gencies, nd community-sed orgniztions Ojective: Connect wterwy projects to djcent communities ACTION: Implement recommendtions of Bllon Creek & Tril Focused Specil Study The Bllon Creek nd Tril Focused Specil Study provides recommendtions for improving entrnces to the ike pth nd could serve s model for future projects long the creek nd triutries. Cliforni Costl Conservncy nd City of Culver City GOAL C IMPROVE PEDESTRIAN AND BICYCLE ACCESS AND SAFETY Ojective: Provide nd mintin icycle, pedestrin nd equestrin tril systems long wterwys nd within the wtershed to link pulic open spce ACTION: Implement recommendtions of Bllon Creek & Tril Focused Specil Study The Bllon Creek nd Tril Focused Specil Study provides recommendtions for improving the ike pth long Bllon Creek nd improving visiility nd ccess. Cliforni Costl Conservncy nd City of Culver City ACTION: Encourge mintennce nd expnsion of icycle pths nd routes Bike pths nd routes serve pulic open spces in some res, ut mny prks nd open spce res could e etter served. Cities should consider expnsion of these routes to crete network tht encourges ccess vi mens other thn the utomoile. Cltrns, Metropolitn Trnsit Authority, Los Angeles County, cities, community-sed orgniztions, neighorhoods, nd individuls 78 Bllon Creek Wtershed Tsk Force

19 ACTION: Fund icycle pths tht serve open spce res nd provide lterntive commute routes Funding for icycle routes from trnsporttion entities re typiclly reserved for routes tht fcilitte commuting. Expnding the eligiility of such funds to routes tht serve pulic open spce could enhnce their use y recretionl users. US Deprtment of Trnsporttion, Southern Cliforni Assocition of Governments, Cltrns, Metropolitn Trnsit Authority, Los Angeles County, nd cities Ojective: Provide for pulic sfety nd security long pedestrin nd icycle routes ACTION: Implement recommendtions of Bllon Creek & Tril Focused Specil Study The Bllon Creek nd Tril Focused Specil Study provides recommendtions for improving sfety nd security long the ike pth. Cliforni Costl Conservncy nd City of Culver City ACTION: Mintin nd enhnce pedestrin sfety t crosswlks Cities should work to mintin nd enhnce pedestrin sfety, prticulrly t crossings on usy streets nd long routes tht provide ccess to pulic open spce. US Deprtment of Trnsporttion, Southern Cliforni Assocition of Governments, Cltrns, Metropolitn Trnsit Authority, Los Angeles County, cities, community-sed orgniztions, neighorhoods, nd individuls GOAL D PRACTICE STEWARDSHIP OF THE LANDSCAPE Ojective: Adopt requirements for the use of ntive, regionlly-dpted nd drought-tolernt plnts in ll pulic sector projects, where consistent with use ACTION: Encourge cities nd gencies to require ntive, regionlly-dpted, nd droughttolernt lndscping in ll projects Although drought-tolernt lndscping hs een utilized in mny pulic projects, the use or ntive nd regionllydpted plnts tht re drought-tolernt should e required, wherever fesile with proposed uses (e.g., for lndscping ut not to replce lwns used for recretion). Resources Agency, Los Angeles County, cities, nd community-sed orgniztions Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 79

20 ACTION: Apply the Los Angeles River Lndscpe Guidelines to Bllon Creek nd other pulic projects The Los Angeles nd Sn Griel Rivers Wtershed Council, in conjunction with the Rncho Snt An Botnic Grden, prepred Lndscping Guidelines nd Plnt Plettes for the Los Angeles River Mster Pln for the County of Los Angeles. The guidelines identify rnge of ntive, regionlly-dpted, nd drought-tolernt plnts tht my e used in projects long the Los Angeles River, which could e used for projects long Bllon Creek nd t other loctions in the Wtershed. Resources Agency, Los Angeles County, Cities of Los Angeles nd Culver City, nd community-sed orgniztions Los Angeles County nd cities Ojective: Encourge identifiction, preservtion, nd restortion of historic sites nd culturl lndscpes ACTION: Identify nd preserve historicl sites nd culturl lndscpes Historic sites nd culturl lndscpes provide opportunities to pprecite the role of humns in modifiction of the wtershed nd provide tngile evidence of the history of development. Resources Agency, Los Angeles County, cities, nd community-sed orgniztions Ojective: Provide incentives for use of ntive, regionlly-dpted nd drought-tolernt plnts in privte sector projects ACTION: Expnd pulic eduction nd outrech regrding pproprite lndscping Although some wter gencies nd cities provide some outrech regrding the use of drought-tolernt lndscping, more outrech on the use of ntive, regionlly-dpted nd drought-tolernt lndscping would increse pulic interest, reduce wter demnd, nd reduce dependence on imported wter. Resources Agency, Los Angeles County, cities, colleges & universities, nd community-sed orgniztions 80 Bllon Creek Wtershed Tsk Force

21 3 Plnning GOAL A COORDINATE WATERSHED PLANNING ACROSS JURISDICTIONS AND BOUNDARIES Ojective: Integrte wtershed plnning with wter supply, nturl resource, lnd use, nd trnsporttion plns ACTION: Encourge cities nd Los Angeles County to incorporte Bllon WMP Ojectives into Generl Plns As the County nd cities updte their Generl Plns, the ojectives identified in this Wtershed Pln should e incorported into the Converstion, Open Spce, nd other elements of the Generl Plns to the extent fesile. County of Los Angeles nd cities ACTION: Develop su-wtershed plns to loclize Bllon WMP Ojectives for mjor triutries ACTION: Encourge pulic gencies to consider cumultive impcts to wtershed resources through CEQA nlysis of projects Anlysis of plns nd/or projects per the requirements of the Cliforni Environmentl Qulity Act must include considertion of the potentil cumultive effects tht could result from the implementtion of those plns or projects in conjunction with other development in the project re. Led gencies should include n ssessment of cumultive impcts to wter qulity nd nturl resources s relevnt. Stte gencies, County of Los Angeles, cities, nd other led gencies ACTION: Develop nd implement the Integrted Resource Pln The Integrted Resource Pln for the City of Los Angeles, currently in development, will provide comprehensive progrm to ddress solid wste, wstewter genertion, stormwter, nd urn runoff.. City of Los Angeles Becuse of the size nd complexity of the Wtershed, development of su-wtershed plns for mjor triutries (e.g., Centinel Creek, Benedict Cnyon Chnnel), my provide for more effective mngement of issues specific to those triutries nd give locl jurisdictions, community-sed orgniztions, nd neighorhood groups greter voice in the prioritiztion of recommended ctions. The intent should e to develop loclized plns tht re consistent with the overll gols nd ojectives of this Pln. County of Los Angeles, cities, communitysed orgniztions, nd neighorhoods. ACTION: Continue implementtion of the Sustinle City progrm With doption of its Sustinle City Progrm in 1994, the City of Snt Monic hs committed to meeting its existing needs without compromising the ility of future genertions to meet their own needs. Although only smll portion of the city is within the wtershed, the progrm hs the potentil to ecome model for other pulic gencies s well s privte orgniztions. City of Snt Monic Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 81

22 ACTION: Consider doption of sustinility progrm Considertion of sustinility principles in the development of pulic sector projects nd other pulic gency ctions could reduce wter demnd, wstewter genertion, solid wste disposl, nd consumption of nonrenewle resources nd contriute to wtershed helth. Los Angeles County, cities of Beverly Hills, Culver City, Inglewood, nd West Hollywood nd community-sed orgniztions GOAL B IMPLEMENT MULTI-OBJECTIVE PLANNING AND PROJECTS Ojective: Employ comprehensive cost-enefit nlysis to evlute multiple-ojective projects ACTION: Include comprehensive cost-enefit nlysis in evlution of pulic sector projects Although cost-enefit nlysis is sometimes prepred for pulic sector projects, the ppliction is typiclly limited to lrge infrstructure projects nd includes limited informtion on project s contriution to wtershed helth. A more comprehensive ssessment, such s tht developed for TreePeople s Trns-Agency Resources for Environmentl nd Economic Sustinility (T.R.E.E.S) progrm, should consider rnge of environmentl nd socioeconomic conditions including wter vilility nd qulity, flood control, ir qulity, energy demnd, green wste supply, cpitl nd opertionl costs, employment nd qulity of life. Los Angeles County hs funded study to ssess the economic vlue of wtershed mngement, nd the results of tht nlysis could e pplicle to future cost-enefit studies. Resources Agency, Stte Wter Resources Control Bord, Los Angeles County, cities, nd community-sed orgniztions Ojective: Leverge plnned single-purpose infrstructure projects y incorporting multiple ojectives nd prtnerships ACTION: Encourge gencies, cities, nd communitysed orgniztions to seek common solutions to issues nd form prtnerships for projects To mke progress towrds chieving ecologicl helth for the Wtershed, cities, gencies, nd community-sed orgniztions need to work together for mutul enefits. 82 Bllon Creek Wtershed Tsk Force

23 All entities nd gencies interested in improving wtershed helth Ojective: Provide incentives to promote sustinle, multiple-ojective privte sector projects ACTION: Study incentives for incorportion of sustinility concepts in privte sector projects Although some orgniztions hve willingly incorported sustinility principles into privte-sector projects, study of potentil incentives tht the cities nd Los Angeles County could incorporte s generl pln policies, ordinnces or other progrms could increse pulic wreness nd encourge roder ppliction of such principles. Resources Agency, Los Angeles County, cities, colleges & universities, nd community-sed orgniztions Los Angeles County, cities of Beverly Hills, Culver City, Inglewood, nd West Hollywood nd community-sed orgniztions ACTION: Study incentives for incorportion of sustinility concepts in privte sector projects As discussed ove, study of potentil incentives could increse pulic wreness nd encourge roder ppliction of such principles. Resources Agency, Los Angeles County, cities, colleges & universities, nd community-sed orgniztions GOAL C USE SCIENCE AS A BASIS FOR PLANNING Ojective: Bse plns nd projects on scientificlly derived principles, prctices, nd priorities Ojective: Incorporte sustinility ojectives nd prctices in ll projects ACTION: Continue implementtion of the Sustinle City progrm As discussed ove, the City of Snt Monic s Sustinle Cities progrm cn serve s model for other gencies nd orgniztions. City of Snt Monic ACTION: Consider doption of sustinility progrm As discussed ove, wider ppliction of sustinility principles into pulic sector ctions nd ctivities would improve wtershed helth. ACTION: Estlish cleringhouse for Wtershed informtion Although vrious entities hve studied wter qulity nd other issues relevnt to wtershed restortion, there is no comprehensive ctlog of this informtion, nor centrl loction where these mterils cn e ccessed or viewed. Estlishing cleringhouse, most likely t college or university, would fcilitte the shring nd exchnge of informtion, promote identifiction of dt gps, nd reduce unnecessry dupliction of effort. Colleges & universities ACTION: Estlished Wtershed Reserch Consortium to encourge reserch relevnt to protection of nturl resources As noted in Chpter 2 (Existing Conditions), due to the extent of urniztion, the ecologicl helth of the Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 83

24 Wtershed is reltively poor. Given the fr-reching vision nd gols estlished in this pln, wide rnge of reserch is needed to more fully pprecite the extent of the prolems, evlute options to improve the condition of nturl resources, nd focus efforts on effective ctions tht cn improve wtershed conditions. Resources Agency, Los Angeles County, cities, colleges & universities, nd community-sed orgniztions Ojective: Utilize pplied scientific reserch to guide pulic policy ACTION: Encourge considertion of scientific studies in the formtion of pulic policy Becuse of the mgnitude of pulic resources tht my e needed to improve wtershed helth, investment of such resources should e focused on methods nd ctions tht re cost-effective, produce visile results, nd ssure the pulic tht limited pulic funds re eing wisely spent. Resources Agency, Stte Wter Resources Control Bord, Los Angeles Regionl Wter Qulity Control Bord, Los Angeles County, cities, colleges & universities, nd community-sed orgniztions GOAL D INVOLVE THE PUBLIC THROUGH OUTREACH AND EDUCATION Ojective: Conduct pulic eductionl nd outrech progrms to promote wtershed restortion ACTION: Encourge continued environmentl eduction in K 12 schools Continued inclusion of environmentl eduction in school curricul will foster n understnding of humn impcts on the environment mong school children. K 12 school districts, Los Angeles County, cities, nd community-sed orgniztions 84 Bllon Creek Wtershed Tsk Force

25 ACTION: Encourge development of K 12 eductionl curriculum focused on the Bllon Wtershed Fostering n pprecition of the Bllon Creek Wtershed will help foster the next genertion of wtershed stewrds. K 12 school districts, Los Angeles County, cities, nd community-sed orgniztions ACTION: Coordinte outrech ctivities with other jurisdictions nd orgniztions to improve wreness of issues relted to stormwter nd urn runoff As discussed ove, s prt of the NPDES permit, the County nd the cities re required to implement Pulic Informtion nd Prticiption Progrm to increse wreness of wter qulity issues nd n understnding of how personl ction cn reduce wter pollution. Coordintion mongst the jurisdictions would mximize the impct of such progrms nd provide common pprecition of the Wtershed. Los Angeles County nd cities ACTION: Encourge locliztion nd distriution of the Living Lightly wtershed rochure First developed for the Topng Creek Wtershed, Living Lightly in our Wtersheds ws susequently dpted for the Mliu Creek Wtershed nd is eing loclized for other wtersheds in the Los Angeles re nd provides good exmples of how personl ction cn improve wtershed helth. Resources Agency, Los Angeles County, cities, nd community-sed orgniztions ACTION: Develop sponsorship progrm for nturl resources in the Wtershed To fcilitte etter pprecition of nturl resources in the Wtershed, sponsorship progrm could e developed, similr to the Adopt-A-Highwy progrm, with signge to identify the resource nd recognize the sponsor s contriution to restortion or protection of those resources. Resources Agency, Los Angeles County, cities, nd community-sed orgniztions Ojective: Estlish process for project prticiption y stkeholder representtives nd the pulic ACTION: Provide for pulic prticiption in development of grnt guidelines, identifiction of project evlution priorities nd funding solicittions Most gencies provide some process for pulic prticiption in the development of grnt guidelines, or the pprovl of projects, lthough notifiction of such processes could e improved. Fostering pulic prticiption improves pulic gency decision-mking nd ssures tht wtershed projects reflect pulic priorities. Resources Agency, Stte Wter Resources Control Bord, Los Angeles Regionl Wter Qulity Control Bord, Los Angeles County, cities, nd community-sed orgniztions ACTION: Continue BCWTF meetings nd encourge expnded pulic prticiption Continution of the BCWTF would provide forum for discussion of issues relted to the implementtion of this wtershed pln. Wider prticiption y other cities, community-sed orgniztions, nd individuls should e encourged. Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 85

26 Los Angeles County, cities, nd communitysed orgniztions Ojective: Incorporte pproprite interpretive signge nd eductionl elements nd fcilities in wtershed restortion projects ACTION: Encourge cities nd gencies to include interpretive signge nd eductionl elements in pulic projects To foster n understnding of how projects contriute to wtershed helth, pulic gencies should include interpretive signge nd eductionl elements in projects. Resources Agency, Stte Wter Resources Control Bord, Los Angeles Regionl Wter Qulity Control Bord, Los Angeles County, cities, nd community-sed orgniztions ACTION: Require interpretive signge nd eductionl elements s funding condition for projects tht foster wtershed restortion Funding gencies should consider inclusion of criteri to require interpretive signge nd eductionl elements in ll projects. US Environmentl Protection Agency, Resources Agency, Stte Wter Resources Control Bord, Los Angeles Regionl Wter Qulity Control Bord, Los Angeles County, nd cities GOAL E UTILIZE THE PLAN IN AN ONGOING MANAGEMENT PROCESS Ojective: Periodiclly ssess progress towrds meeting Wtershed Pln ojectives nd revise s pproprite ACTION: Review the Wtershed Pln every three yers nd revise pln elements s pproprite As discussed lter in this Chpter, it is proposed tht the Wtershed Pln e reviewed on triennil sis. Los Angeles County, cities, BCWTF, nd community-sed orgniztions 86 Bllon Creek Wtershed Tsk Force

27 Ojective: Develop enchmrks to ssess wtershed sttus y regulr monitoring process ACTION: Implement community-sed monitoring progrm, estlish enchmrks, nd monitor prmeters on regulr sis As discussed in Chpter 5 (Community-Bsed Monitoring), some enchmrks (such s wter qulity stndrds) lredy exist, ut others, such s those relted to hitt, need to e estlished, sed on scientific study nd stkeholder consensus. Los Angeles County, cities, BCWTF, nd community-sed orgniztions GOAL F REALIZE THE POTENTIAL OF WATERSHED RESTORATION FOR SUSTAINABLE ECONOMIC DEVELOPMENT Ojective: Recycle underused sites long Bllon Creek s frontge for new, sustinle mixed-use development ACTION: Implement recommendtions of Bllon Creek & Tril Focused Specil Study The Bllon Creek nd Tril Focused Specil Study provides opportunities for mixed-use development tht celertes proximity to the Creek. Cliforni Costl Conservncy nd City of Culver City ACTION: Identify incentives for sustinle development long Bllon Creek As improvements to Bllon Creek occur, opportunities for development long the creek my ecome more prevlent. Incentives for sustinle development could encourge development tht reduces wter demnd, wstewter genertion, solid wste disposl, nd consumption of nonrenewle resources nd contriutes to wtershed helth. Los Angeles County nd cities of Culver City nd Los Angeles Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 87

28 BMP Overview Multi-Use Retention Bsin Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Storge High: Sediment, flotles Medium: Some nutrients, some hevy metls, some toxics, some oxygen demnding sustnces, some oil & grese, some cteri & viruses High Multiple enefits from single or Incresed wter conservtion Recretionl opportunities Enhnced hitt series of sites Difficult to find suitle sites Mjor undertking Loss of tx revenues on lnd used Expensive to construct, operte & mintin Very complex to design nd construct Requires lrge vcnt/open spce Must comply with existing dischrge, wter qulity regultions Mostly positive Averge $7,500 / 30,800 (residentil / industril), not including lnd costs NPS Ctegory Runoff from Existing Development Trnsporttion Development (Rods, Highwys, Bridges) BMPLA Ctegory Cisterns nd Underground Storge Stormwter Ponds (nonproprietry) Engineered Wetlnds (nonproprietry) Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 88 Bllon Creek Wtershed Tsk Force

29 BMP Overview Cistern Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Storge High: Sediment, flotles Medium: Some nutrients, some hevy metls, some toxics, some oxygen demnding sustnces, some oil & grese, some cteri & viruses High Retins wter on site for Reduces runoff volume reuse Cost orne y property owners Requires proper mintennce y property owner Must e properly secured Moderte Aoveground unit requires spce; elow ground requires excvtion My require city pprovl (pln check, permits) Vector control Wter rights issues re retined wter My require tx incentives to get pulic Requires ehviorl chnge for use uy-in Averge $17,000/ $105,000 (residentil / industril) NPS Ctegory Runoff from Existing Development Trnsporttion Development (Rods, Highwys, Bridges) BMPLA Ctegory Cisterns nd Underground Storge Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 89

30 BMP Overview Extended Detention Bsin Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Storge High: Sediment M edium: Some nutrients, some hevy metls, some toxics, some flotles, some oxygen demnding sustnces, some oil & grese, miniml impct on cteri & viruses High Removes some prticulte pollution nd dsored metls Mnges pek flood flows If sin unlined, my lso rechrge groundwter My e designed s multi-use fcility Will not remove dissolved pollutnts Moderte to high opertion/mintennce costs Sediments must e periodiclly removed nd disposed Requires proper design nd site chrcteristics to function properly Adequte re nd grdient required Vector control if ny stnding wter Disposl of potentilly contminted sediments Must comply with existing dischrge, wter qulity regultions if infiltrting My pose sfety concerns when full My not e pproprite for multiple uses $ cu ft of treted wter volume NPS Ctegory Runoff from Existing Development Trnsporttion Development (Rods, Highwys, Bridges) BMPLA Ctegory Cisterns nd Underground Storge Stormwter Ponds (nonproprietry) Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 90 Bllon Creek Wtershed Tsk Force

31 BMP Overview Underground Retention/Infiltrtion Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Storge High: Sediment, hevy metls, toxics, flotles, oxygen demnding sustnces, oil & grese, cteri & viruses Medium: Nutrients High Clens out first flush contminnts Reduces pek flows Periodic mintennce is required My require pretretment prior to infiltrtion The structurl integrity of the surfce must e ensured This system only susoil None None works if the re eneth tnks llow infiltrtion into the $23 5k +/- for construction cost nd $5k+/- nnul mintennce NPS Ctegory Runoff from Existing Development Trnsporttion Development (Rods, Highwys, Bridges) BMPLA Ctegory Cisterns nd Underground Storge Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 91

32 BMP Overview Underground Detention (street storge with infiltrtion) Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Storge High: Sediment, hevy metls, toxics, flotles, oxygen demnding sustnces, oil & grese, cteri & viruses Medium: Some nutrients High Delys pek dischrge Allevites locl flooding My reduce pollutnt lod to receiving wter ody Construction would impct trffic flow Does not reduce flow to receiving wter ody Expensive, lso high opertion/mintennce Other enefits not relized Requires proper design nd dringe outlet for relese of wter Potentil conflict with underground utilitie s None No multiple enefits ut could solve loclized flooding prolems Averge $1 8 / 3 7 million (residentil / industril) NPS Ctegory Runoff from Existing Development Trnsporttion Development (Rods, Highwys, Bridges) BMPLA Ctegory Cisterns nd Underground Storge Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 92 Bllon Creek Wtershed Tsk Force

33 BMP Overview Porous Pvement (with infiltrtion) Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Infiltrtio n High: Sediment, hevy metls, toxics, flotles, oxygen demnding sustnces, oil & grese, cteri & viruses Medium: Some nutrients Low Low cost nonintrusive groundwter rechrge Oil & grese pollution in soil Potentilly higher initil nd opertion/mintennce costs thn trditionl pving High Approprite for prking lots, wlkwys, etc ; not My require tretment filter in polluted res for streets My consider uilding code chnges to mke mndtory None identifie d $3,400 for verge residentil site, up to $560,000 for industri l NPS Ctegory Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Porous pvement Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 93

34 BMP Overview Dry Well Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Infiltrtio n High: Sediment, hevy metls, toxics, flotles, oxygen demnding sustnces, oil & grese, cteri & viruses Medium: Some nutrients High Retins runoff on site for infiltrtio n Groundwter rechrge low mintennce Limited wter qulity enefits; potentil for groundwter Cost my need to e orne y property owners Must hve sufficient clernce to groundwter Requires excvtion Suitle for porous soil Cn e sized ccording to spce ville Must comply with existing wter qulity regultions Must e voluntry $14,000 $31,500 depending on size pollutio n NPS Ctegory Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Disinfection infiltrtion well Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 94 Bllon Creek Wtershed Tsk Force

35 BMP Overview Wetlnd Systems Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Filtrtio n High: Sediment, nutrients, sustnces, oil & grese Medium: Some cteri High hevy metls, toxics, flotles, oxygen demnding & viruses Aesthetic nd wildlife hitt enhncement Efficient pollutnt removl for metls, nutrients If unlined, cn rechrge groundwter Requires pproprite nd regulr mintennce to prevent clogging High opertion/mintennce costs My require dditionl wter during dry periods Design must e hydrologiclly correct Requires dequte wter to sustin pool or qutic vegettion Performnce enhnced with sediment trp for corse mteril to prevent system clogging Vector control in stnding wter My require Clen Wter Act Section 404 permit from Army Corps of Engineers Endngered Species Use My e concerns over incresed wildlife y djcent property owners $ cu ft of treted wter volume NPS Ctegory Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Aqutic uffers (nonproprietry ) Engineered wetlnds (nonproprietry) Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 95

36 BMP Overview Bioretention Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Filtrtio n High: Sediment M edium: Some nutrients, some hevy metls, some toxics, some flotles, some oxygen demnding sustnces, some oil & grese, miniml impct on cteri & viruses Medium Aesthetic vlue Sediment nd pollutnt removl Groundwter rechrge My e used in plce of trditionl prking lot lndscping My e of limited vlue during hevy rins if dringe re exceeds detention cpcity Depending on lnd use in dringe re, my require pretretment Designs cn e quite complex ut re flexile Must hve pproprite vegettion to tolerte inundtion nd dry periods Depending on plnt plette, my need dditionl Adptle to vriety of sizes & loctions Vector control while wter is ponded Must comply with existing dischrge, wter qulity regultions None $5 30 cu ft of treted wter volume irrigtion in dry periods NPS Ctegory Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Aqutic uffers (nonproprietry ) Engineered wetlnds (nonproprietry) lndscpe irrigtion mngement Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 96 Bllon Creek Wtershed Tsk Force

37 BMP Overview Ctch Bsin Inserts Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Filtrtio n High: Flotles, oil, & grese M edium: Some sediment, some nutrients, some hevy metls, some toxics, some oxygen demnding sustnces, miniml impct on cteri & viruses None Removes deris nd suspended pollutnts Simple nd inexpensive to instll No dditionl lnd or structure required High mintennce requirements ccumulted sediments nd deris must removed to void clogging filter nd/or re-suspension/ replcement My e of limited vlue during hevy rins Cn e instlled in existing storm drin systems Type of insert must e pproprite for pollutnts of concern Disposl of potentilly Vector control None contminted sediments e Typicl Unit Costs Depending on design nd pollutnts trgeted, rnge from $40 to $3,000 NPS Ctegory Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Drin inlet protection Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 97

38 BMP Overview Medi Filtrtion Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Filtrtio n High: Sediment, flotles Medium: Some nutrients, some hevy metls, miniml impct on toxics, some oxygen demnding sustnces, some oil & grese, some cteri & viruses None M y e plced under existing structures (prking lots, wlkwys, plying fields) Effective removl of suspended pollutnts Orgnic medi will lso remove metls, nutrients Cn e sized ccording to need Performnce declines over time, requiring ccess medi does not remove dissolved pollutnts High dptle to vriety of situtions nd conditions for mintennce Inorgnic Effective in smll sites to tret portion of diverted runoff Performnce enhnced with sediment trp for corse mteril to prevent system clogging Stility of surfce re when used s elow ground Must comply with existing dischrge, wter qulity regultions None $ cu ft of treted wter volume, or more for preuilt systems NPS Ctegory Runoff from existing development On-site disposl systems Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Filter Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 98 Bllon Creek Wtershed Tsk Force

39 BMP Overview On-Site Retention (vegetted swle or sin) Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Conveynce High: Sediment, flotles Medium: Some nutrients, some hevy metls, some toxics, some oxygen demnding sustnces, some oil & grese, some cteri & viruses High Retins runoff on site for Groundwter rechrge Low mintennce infiltrtio n My not e mintined if ownership chnges Cost to regrde for retrofit My e issues over stnding wter (liility, vectors, odors) High under certin conditions Requires regrding to construct on retrofits My require city pprovl (pln check, permits) My require enforcement for proper mintennce Vector control Must comply with existing wter qulity regultions Stnding wter my pose liilit y 2 $ 5 40/yd NPS Ctegory Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Infiltrtion trenches Vegetted dringe swles nd strips (nonproprietry) Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 99

40 BMP Overview Tree Plnting Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices Vrile Low Low cost Nonintrusive Conserves energy Incresed wter retention Aesthetic vlue Smll prt of overll solution Requires mintennce Overgrown tree roots cn crck pvement High More effective on lrger lnd holdings None identifie d Mostly fvorle $155 per 24-inch ox NPS Ctegory Runoff from developing res Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Lndscpe irrigtion mngement Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 100 Bllon Creek Wtershed Tsk Force

41 BMP Overview Removl of Pving Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices High: Sediment M edium: Some nutrients, some hevy metls, some toxics, some flotles, some oxygen demnding sustnces, some oil & grese, miniml impct on cteri & viruses Medium Low cost Nonintrusive Increses infiltrtion My reduce energy No effect on pek flood flows My increse mud flows Higher mintennce costs costs (het islnd effect) High; pvement my need to e replced with other groundcover Limited res where pvement cn e removed without some replcement cover None Little pulic wreness of enefits Vrile, depending on size of re nd replcement cover, if ny NPS Ctegory Runoff from existing development BMPLA Ctegory Aqutic uffers (nonproprietry ) Good housekeeping nd mintennce Lndscpe irrigtion mngement Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 101

42 BMP Overview Mulching (to Increse Retention / Infiltrtion) Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices High: Sediment, hevy metls, toxics, flotles, oxygen demnding sustnces, oil & grese, cteri & viruses Medium: Some nutrients Low Low-cost nonintrusive increses infiltrtio n Some pollutnt io-remedition Does not reduce pek dischrge Requires mintennce to keep mulch in plce High More effective on lrger lnd holdings None identifie d Proly fvorle on voluntry sis $2 40 sq yd NPS Ctegory Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Good housekeeping nd mintennce Lndscpe irrigtion mngement Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 102 Bllon Creek Wtershed Tsk Force

43 BMP Overview Stormwter-Supplied Irrigtion System Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices Vrile None Clens out first flush contminnts Conserves drinking wter sources Helps conserve wter in drought conditions Groundwter rechrge Periodic mintennce is required Automted controls re complex to design nd set A ckflow protection wter system system is required with the interconnect with the pulic Tkes ig enough re ner the outlet of the dringe re to uild the system Elevted tnk site desirle, ut not required Stormwter irrigtion systems s with other recycled wter certin precutionry mesures to insure pulic sfety None $50K to $60K for 12-cre dringe re nd 9-cre $6k to $12k per nnum could e required in mintennce systems require irrigtion re NPS Ctegory Runoff from developing res Runoff from constructions sites Runoff from existing development Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Lndscpe irrigtion mngement Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 103

44 BMP Overview Reduce Directly Connected Impervious Ares Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices Vrile Medium Reduces runoff velocity nd pollutio n No long-term pulic mintennce Most pplicle to new development or smller sites Primrily pplicle to re-development in urnized Reductions in flow re modest, not drmtic Retrofitting is difficult on lrge scle My require mintennce y property owner wtersheds Could e pplied to re-development projects or retrofit of existing My e most pproprite for residentil or other smll sites Must comply with existing dischrge, wter qulity regultions sites Building community often resistnt to chnges Opportunity for individuls to prticipte in solving flood prolems (e g, Hll House in Los Angeles) Low NPS Ctegory Outrech nd eduction BMPLA Ctegory N/ A Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 104 Bllon Creek Wtershed Tsk Force

45 BMP Overview Source Control Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices Vrile Vrile Reduces pollutnt lod to runoff Increses pulic wreness of pollution genertion Trsh & sediment removl hs esthetic enefits Difficult to monitor effectiveness My e difficult to enforce High Methods of control my e dpted to specific source None Resistnce to ehviorl chnge Widespred eduction is required Low, depending upon enforcement mechnisms NPS Ctegory Outrech nd eduction BMPLA Ctegory N/ A Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 105

46 BMP Overview Acquisition or Reloction Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices Vrile High Reduces long-term losses from flooding Effective even if flood flows re not reduced Possile disruption to locl economy No reduction in flows to receiving wter ody No protection for remining properties No existing flood mpping to identify flood-prone properties Reloction of residentil nd commercil uildings is difficult Possile contminted soils on some sites None Potentil reduction in tx se Disruption of residents nd usinesses To e fir if pulic funds re used, need to ddress ll flood-prone properties High NPS Ctegory Outrech nd eduction BMPLA Ctegory N/ A Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 106 Bllon Creek Wtershed Tsk Force

47 BMP Overview Flood Proofing Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices None Vrile Addresses key fcilitie s Effective even if flood flows re not reduced Requires coopertion from property owners Requires work on hundreds of properties No reduction in dischrge to receiving wter ody Does not ddress trffic-relted prolems Fesile on individul properties, ut less fesile on wtershed scle Need to mintin ingress/egress Could increse flooding on unprotected properties To e fir if pulic funds re used, need to protect ll flood-prone properties Low for individul properties, ut high when pplied on wtershed scle NPS Ctegory Outrech nd eduction BMPLA Ctegory N/ A Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 107

48 BMP Overview Flood Wrning Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices None None Smll infrstructure needs Insufficient wrning time in Does not protect structures Vrile with wtershed N/ A smll wtersheds Coordinte with County nd Ntionl Wether Service Consequences of flse wrning or missed wrnings re serious Low NPS Ctegory Outrech nd eduction BMPLA Ctegory N/ A Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 108 Bllon Creek Wtershed Tsk Force

49 BMP Overview Policies or Ordinnces (to Encourge or Require BMPs) Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Prctices Vrile Vrile Encourges pulic prticiption in prolem-solvin g Builds community vlues Avoids privte lnd cquisition costs where implemented Impcts on flooding or wter qulity difficult to monitor High, ut my e difficult to monitor or enforce Could e pplied to retrofits, new or redevelopment Must comply with existing dischrge, wter Detention must not conflict with wter rights qulity regultions Pulic my not support if costs imposed on them or complince techniclly difficult Resistnce to chnging ehvior Vrile, depending on requirements NPS Ctegory Outrech nd eduction BMPLA Ctegory N/ A Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 109

50 BMP Overview Pulic Eduction Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Outrech Vrile Vrile Builds community vlues Existing mterils ville Cn e quite effective y incresing wreness Results re not mesurle Difficult to chnge pulic ehviors High Cn trget specific industries or geogrphic res None Resistnce to chnging ehvior Usully strong politicl support Vrile ut low NPS Ctegory Outrech nd eduction BMPLA Ctegory N/ A Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm 110 Bllon Creek Wtershed Tsk Force

51 BMP Overview Proprietry Systems Generl Effectiveness Wter Advntges BMP Type on Trgeted Contminnts Quntity Impct Disdvntges Technicl Site Fesiility Regultory Socil/Politicl Typicl Unit Costs Other Vrile Vrile Removl of pollutnts Some systems lso reduce flow volume or velocity Often includes vendor technicl support for instlltion, O&M Performnce often not independently verified High in most cses Must select product est suited to site conditions Must comply with existing dischrge, wter qulity regultions None Vrile ut cn e quite high, prticulrly if system mintennce included NPS Ctegory Runoff from existing development On-site disposl systems Trnsporttion development (rods, highwys, ridges) BMPLA Ctegory Cisterns nd underground storge deflector screen Drin inlet protection filter Green roof In-strem trp Porous pvement Slope stiliztion & erosion control Swirl concentrtor Wet vult Per the Pln for Cliforni s Nonpoint Source Per the Los Angeles County BMP Tsk Force Control Pollution Progrm Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 111

52 Ojective: Encourge comptile residentil, commercil, nd service uses djcent to rehilitted creek ACTION: Implement Generl Pln modifictions per the recommendtions of the Bllon Creek & Tril Focused Specil Study The City of Culver City is dveloping revisions to the City s Generl Pln in response to the Bllon Creek & Tril Focused Specil Study. City of Culver City ACTION: Consider revisions s pproprite to Generl Plns to encourge comptile residentil, commercil, nd service uses djcent to Bllon Creek The City of Los Angeles nd Los Angeles County (long with Culver City) hve jurisdiction over most of the frontge long Bllon Creek nd should consider Generl Pln revisions where pproprite to encourge mixeduse development tht tke dvntge of proximity to the creek. Los Angeles County nd City of Los Angeles B BEST MANAGEMENT PRACTICES Potentil BMPs tht my e pplicle in the Wtershed re summrized on the following pges, sed on informtion from the Cliforni Nonpoint Source Pollution Control Progrm nd the Los Angeles County Best Mngement Prctices Tsk Force. As noted ove, the Snt Monic By Restortion Commission initited Bllon Creek BMP Work Group, to implement methodology for selection of BMPs the Bllon Creek Wtershed (currently inprogress). Concurrently, Proposition 13-funded project will develop pln for instlltion of suite of BMPs in n individul suwtershed nd monitor the effectiveness of those BMPs in treting nd/or reducing 303(d) list pollutnts. At such time s the BMP selection methodology is completed, the recommendtions from tht study regrding which BMPs re most pplicle in the Wtershed should e incorported into this Wtershed Pln. C EISTING AND PENDING PROJECTS In My 2003, Stkeholder Questionnire ws distriuted to the BCWTF to seek input on existing nd pending physicl projects, volunteer monitoring, nd community eduction nd outrech efforts in the Wtershed. The resulting Bllon Creek Wtershed Inventory (Tle 4-1) is orgnized into severl ctegories, including Lower Bllon Creek, Wter Qulity, Hitt & Ntive Vegettion Restortion, Trnsporttion & Trils, Site Retrofit, Urn Strem Restortion, nd Generic s. For these ctegories, the list ws lso seprted into those tht were hd een completed or were pending (in generl, those for which scope nd udget hd een identified), nd potentil projects (which generlly projects for which scope nd udget hd not een identified, or for which no fund source hd een identified.). A generl description of project types is provided elow. 1 Lower Bllon Creek For the purposes of this Pln, the Lower Bllon Creek re includes tht portion of the creek tht flows in n open chnnel (generlly etween Venice Boulevrd nd the cost), those res in proximity to the open creek chnnel, nd the res long the cost, including Del Rey Lgoon, Bllon Lgoon, the Venice Cnls, nd Mrin del Rey. Within this re, vriety of project types could e implemented, including wter qulity, hitt 112 Bllon Creek Wtershed Tsk Force

53 restortion, trils nd trnsporttion, site retrofit, urn strem restortion, or strtegic site projects (ech descried elow) could e implemented. s in the Lower Bllon Creek re hve een grouped together ecuse of their proximity to the creek, or other ssocited wter odies, nd their potentil for high visiility. 2 Wter Qulity Wter qulity projects hve the potentil reduce to pollutnts of concern, including nutrients, metls, orgnics, nd trsh, in stormwter, or dry seson, runoff. These projects could e locted on or within strem chnnel, triutry, or ctch sin, long the edge of impervious surfces, such s prking lots, or within pervious res, such s lwns or lndscped res. In ddition to physicl projects or devices, other techniques include mngement prctices nd pulic outrech nd eduction. In generl, mngement techniques, outrech, nd eduction re termed Best Mngement Prctices (BMPs), lthough the term my lso refer to physicl improvements. BMPs my lso e descried s structurl (generlly mening physicl improvement) nd nonstructurl, however the usge of these terms is not stndrdized. 3 Hitt & Ntive Vegettion Restortion Becuse hitt nd ntive vegettion is very limited in the wtershed, hitt improvements nd the introduction of ntive vegettion should e component of projects whenever fesile. Hitt types tht once were found in the wtershed included costl dunes, slt mrsh, ntive grsslnds, costl sge scru, chprrl, cost live ok woodlnd, Cliforni wlnut woodlnds, freshwter mrsh nd riprin woodlnds. Tody, only smll remnnts of those hitt types remin, generlly limited to three res, the lower Bllon Creek re (including the Bllon Wetlnds nd ssocited lgoons), the Bldwin Hills, nd tht portion of the Snt Monic Mountins within the wtershed. Restortion of hitt within these res could include removl of nonntive species, nd replnting or reintroduction of ntive species. Becuse 85 percent of the wtershed hs een urnized, the potentil to expnd use of ntive vegettion in lndscping t prks, schools, nd in commercil nd residentil prcels is enormous. By incresing the use of ntive vegettion, ntive irds nd other wildlife could enefit. Becuse most ntive vegettion is droughttolernt, expnded use of ntive plnts would lso reduce wter demnd relted to lndscpe irrigtion. 4 Trnsporttion & Trils Automoile use in the wtershed is source of considerle pollution, oth in the form of sustnces tht re deposited onto streets nd highwys (nd then flushed into the creek y runoff) nd from tilpipe emissions tht include sustnces tht fll to the erth vi eril deposition (nd then enter the storm drin system during rinfll, or s result of lndscpe irrigtion. Reducing the use nd dependence of the utomoile thus hs the potentil to reduce the pollution tht enters the wters of the wtershed. s, methods nd mechnisms tht increse the use of pulic trnsporttion, encourge icycle commuting, or encourge pedestrin trips ll hve the potentil to reduce vehiculr trips, nd thus contriute to the helth of the wtershed. These types of projects include trils, ike pths, pulic trnsporttion improvements, nd projects tht enhnce pedestrin nd icycle sfety. 5 Site Retrofit Trditionlly, mny development projects were designed to trnsport runoff from impervious surfces (such s roofs, prking lots or drivewys) directly to the storm drin system, often vi n underground pipe. Typicl lndscping ws wter intensive. Use of ntive vegettion in lndscping is often limited, nd rnge of plnt species, some of which require regulr irrigtion, hve een used to crete fux-tropicl style of lndscping. Retrofit of these sites would generlly hve two min Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 113

54 ojectives: retin stormwter runoff on-site (to reduce pollutnt lods), nd introduce ntive vegettion (to reduce irrigtion needs nd provide forge nd nesting sites for ntive insects nd nimls). 6 Urn Strem Restortion As noted in Chpter 2 (Existing Conditions), the entire length of Bllon Creek nd most of the triutry chnnels, with the exception of limited sections of strem chnnels in the Bldwin Hills nd the Snt Monic Mountin, hve een modified, lined with concrete or een diverted into underground culverts. Urn strem restortion refers to the concept of dylighting uried strems, removl of concrete, re-introduction of riprin vegettion long the nks, nd restortion of nturl hydrologic functions of these strem chnnels. Becuse these former strem chnnels were engineered to protect lives nd property from flood dmge, ny proposl to restore strem or strem rech must e undertken only when consistent with the dopted wtershed gol to mintin flood protection. In ddition, it should e noted tht urn restortion my not result in the restortion of historicl conditions t ll loctions. Becuse of typicl rinfll ptterns, most strems in the wtershed were intermittent in historic times. Becuse wter is imported into the wtershed lndscpe irrigtion is extensive, yer-round runoff occurs in mny, if not ll, storm drins. Thus, restortion of strems could restore nturl physicl conditions, ut yer-round, insted of sesonl strem flow, could result. 7 Strtegic Sites As descried ove, site retrofit projects re those tht retin runoff generted y the site itself. Strtegic sites re loctions generlly within pulic ownership (such s prk or school) where mjor storm drin is locted djcent to, or underneth the site. Becuse of the proximity of the storm drin, runoff could e diverted nd treted, therey improving wter qulity from upstrem res (in ddition to the site itself). Similr to site retrofits, ntive vegettion could e introduced, where comptile with use. 8 Generic s The project inventory lso included severl generic projects tht included vrious projects for which no site ws identified. As most of the other projects included in the inventory were relted to specific sites, this ctegory ws used for illustrtive purposes only nd hs no other intent. D LOCATION OF EISTING AND PENDING PROJECTS Bsed upon the informtion provided in the Inventory, the loction of those projects ws identified nd plotted on mp of the Wtershed, s shown in Figure 4-1. E DEMONSTRATION PROJECTS 1 Introduction In ddition to developing list of existing nd proposed projects in the Wtershed, the BCWTF lso identified short-list of demonstrtion projects, which re intended to serve s exmples of multi-ojective projects tht cn provide opportunities to improve wters qulity, introduce ntive vegettion, nd serve s high-visiility exmples tht pulic gencies, orgniztions nd individuls could undertke to improve wtershed helth. 2 Selection Criteri Bsed on the dopted list of gols nd ojectives, the following selection criteri were identified y the BCWTF to generte short list of demonstrtion projects for dditionl study. 114 Bllon Creek Wtershed Tsk Force

55 Figure 4-1 Bllon Creek Wtershed s SOURCE: Los Angeles County, Deprtment of Pulic Works, Wtershed Boundries, Chnnels, nd Rods, My 2003; EIP Assocites, GIS, June 2003 Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 115

56 TABLE 4-1 Bllon Creek Wtershed Inventory (with Mp Identifiers) M p Description of project component s N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) P roject Cos t nd/or ojectives L ower Bllon Creek Completed, Under Construction, Ongoing, or Pendin g B 1 Bllon Creek & Tril Focused Specil Study B 2 Bllon Cree k Erth Dy 2003 Plnting B 3 Bllon Cree k Pedestrin Bridge & Lndscping n / Bllon Cree k Wtershed Mngement B 4 Bllon Lgoo n Wter Qulity Enhncement Pln B 5 Bllon Wetlnd s Tidegte (1135 Action ) n / Bsi n Centinel Dry-wether Runoff nd BMP Diversion n / Bllon Lower Restortion Reconnissnce Study City oundries creek roughly Sepulved to Wshington SW Corner of & Sepulved of Creek Blvd Between Overlnd & Sepulved, connecting Ocen drive to schools on west side of creek Culver Costl City, CA Conservncy LA County, CC, CCUSD, BCR Grnt from Costl Conservncy 9/2003 y city Completed 26, 2003 study ok April To e completed summer 2003 W tershed-wide L A C o Completion : Summer 2004 County ROW nd vrious $ 170k Culver City s Bllon Creek & Tril Focused Specil Study, to define recretionl potentil, ssess condition, define gols, projects, develop JPA, propose nd implement < culvercity org/ctfss> C ounty ROW 3 CA sycmores, 9 wester n redud trees, 160 ntive shrus & irrigtion/soil mendments City City ROW of in Culver County $ 920k Culver City s pedestrin ridge & lndscping $ 200K EIP (consultnt) will prepr e wtershed mngement pln B llon Lgoon S MBRC (Prop A ) C omplete d C ity of L A $ 385,02 4 Implemented y City of LA DP W NW Section of Are of Bllon Wetlnds B Construction strted fll 2002 Modify existing tidl control system from 3 flpgtes to 2 self-regulting tidegtes nd 1 new flpgte This should improve tidl exchnge nd expnd wetlnd from 3 5 to 13 5 cres of improved hitt C entinel Bsin S MBRC (Prop 12 ) O n-goin g C ounty of LA? $ 500 K City of Snt Monic is implementing project Completion: 2002 Dec Section Anlysis 905() (WRDA 2000) 116 Bllon Creek Wtershed Tsk Force

57 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) Mp N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) Cos t B 6 Mrin Bec h Wter Qulity Improvement n / N ew Pr k South edge of cree k M rin Bech L A County Dept o f Beches & Ply Vist project n / P ly Vist 1,087 cres in MDR, etween Fiji Wy, Jefferson Blvd, Vist del Mr, & Segundo Snd Hills L ower Bllon Creek Potentil s B 7 Bllon Cree k Entrnce Chnnel Modifictions B 8 Bllon Lgoo n Improvements B 9 Bllon Lgoo n Preserve B 10 Bllon Wetlnd s Expnsion B 11 Del Rey Lgoo n Improvements B 12 Del Rey Lgoo n prk expnsion Ply Cpitl Corportion F unded L A Count y Dept of Beches & Hrors Completed: 31-03? 12- $3 125 million Description of project nd/or ojectives components Construct wter infusion system or other pproprite flushing mechnism, instll structurl BMPs in surrounding prking lots, replce existing sediment if necessry Prk O ngoing Mixed commercil & residenti l community in prt of the re, prt will e sold to Trust for Pulic Lnds, restortion of prt of undeveloped portion of degrded slt & freshwter mrshes is ongoing, some re e trnsferred to stte prk system M outh of Bllon U SAC E P ropos l Modifiction of entrnce t o C ree k Mrin del Rey & mouth of Bllon Creek Bllon etween Rey nd Bllon Venice Lgoon, Mrin Venice Wetlnds del Cnls in C ity of Los Angeles O n hol d City of Lo s Angeles Removl of non-ntives, dredge chnnel to improve tidl circultion nd instll fencing to reduce pulic ccess Costl O n hol d West side Bllon Lgoo n C onservncy, City of Preserve: islnd expnsion, L A plnting of ntive veg, removl of concrete oil pltform, deep pool dredging, pulic overlook pltform & wlkwy B llon Wetlnds Constructed wetlnds/potenti l Stte prk Del del Rey Rey Lgoon, Ply City of Los Recretion Angeles nd Prks P ending City of Lo s Angeles Improve tidl flushing ntive vegettion D el Rey Lgoon Del Rey Lgoon lnd cquisitio n & design process nd plnt to Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 117

58 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) Mp N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) Cos t n / Lower Bllon U SAC E USACE need s C reek Restortion locl mtch S tud y B 13 Mrin del Re y entrnce chnnel dredging n / MDR & B C Sediment Control Mngement Pln Fesiility Study B 14 Oxford Floo d Control Bsin Enhncements B 15 (Venice) Grn d Cnl Restortion n / Bllon Cree k Infltle Dm Description of project nd/or ojectives Lower study Bllon Creek components Restortion M rin del Rey hror U SAC E O ngoin g Periodic mintennce dredging in Min, North, & South entrnce chnnels & mouth of B creek to mintin nvigle depths Mrin del nvigtion Rey chnnels Oxford Flood Control Bsin djcent to Mrin del Rey 1,000 Venice north of feet long within Cnl network Wshington Bl U SACE S ummer Sediment control mngemen t pln to reduce sedimenttion & contmintion within MDR s nvigtion chnnels from Bllon Creek dischrges L A County Dept of Beches & Hrors W ATER QUALITY Completed, Under Construction, Ongoing, or Pendin g n / Bllon Cree k Stormwter Trsh Cpture System n / Ctch Bsi n Screens nd Inserts Crmon Chrnock Swtelle Ave, Rd, Blvd nd Vrious loctions the Bllon Creek Wtershed within Preliminry/ Conceptul L A County Dept of Beches & Hrors $ 2 5 million Instll new fencing, lighting, irrigtion, lndscping, nk improvements, interpretive signge nd promende long Wshington Street, Admirlty Wy nd oundry with Admirlty Prk C ity of Los Angeles $ 1 5 M Funded y resident ssessmen t progrm Mke Grnd Cnl similr to Venice network, possily widening the lgoon, crete mrine preserve with sloping nks, nd decomposed grnite pths?? C onceptu l?? Instll infltle dm t C ity of Los Angeles O ngoin g City of Lo s Angeles C ity of Los Angeles O ngoin g City of Lo s Angeles loction impound provide in Bllon wter for esthetic Creek to tretment enefits nd $ 1 8 M Instll 3 full trsh cpture system s $ 24 M This is ongoing effort y th e City of Los Angeles tht upon completion will hve instlled 10,000 screens nd inserts 118 Bllon Creek Wtershed Tsk Force

59 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) M p Description of project component s N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) P roject Cos t nd/or ojectives n / Full trsh cptur e systems n / End of line trs h cpture systems n / Bllon Cree k Litter Monitoring W 1 Ctch Bsi n Excluders W 2 Bllon Cree k Shore Conveyor System W 3 Bllon Cree k Wter Qulity Improvement n / Bllon Cree k Wter Qulity Improvement n / Bllon Wtershe d BMP Prioritiztion n / Bllon Cree k Mintennce W 4 CDS Coliseum Are n / Westlke & Coliseum CDS n / CDS Downtown Are Vrious loctions the Bllon Creek Wtershed Vrious loctions the Bllon Creek Wtershed Vrious loctions wtershed West Snt Creek Lincoln within within in Hollywood long Monic Blvd? crossing Blvd t Culver City, ner Overlnd Bridge the creek Nicolet Ave nd Coliseum St, Mrtin Luther King Jr Blvd, First Street nd Western Ave the ner C ity of Los Angeles O ngoin g City of Lo s Angeles C ity of Los Angeles O ngoin g City of Lo s Angeles $ 7 4 M This is ongoing effort y th e City of Los Angeles tht upon completion will hve instlled full cpture devices $ 1 4K This is ongoing effort y th e City of Los Angeles tht upon completion will hve instlled end of line devices S MBRC (Prop 12) F unded in C ounty of L A $ 600 K Implemented y LAC-DP W S MBRC (Prop 12) C ompleted in City of Wes t Hollywood $ 30K Ctch Bsin Deris Exclude r Devices S MBRC (Prop A)?? $ 265,03 9 Implemented y LAC-DP W S MBRC (Prop 12) O n-goin g C ounty of L A $ K Implemented y Culver Cit y C ity of Los Angeles Completed Fe 2005 City of Angeles Los $ 2 3M Instll 200 ctch sin scree n covers nd inserts nd 3 CDSs W tershed-wide S MBRC (Prop 12 ) F unded $ 3 M To e implemented y wtershe d cities nd County Bllon control Creek chnnel flood USACE DPW & LA Co Mintennce C oliseum re S MBRC (Prop A ) C omplete d C ity of L A $ 125,88 3 Implemented y City of LA DP W Westlke re Coliseum re nd C ity of Los Angeles C omplete d City of Lo s Angeles $ 375K Two CDSs were instlled in th e [ctch sins?] to meet the trsh TMDLs D owntown S MBRC (Prop A ) C omplete d C ity of L A $ 247,34 7 Implemented y City of LA DP W Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 119

60 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) M p Description of project component s N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) P roject Cos t nd/or ojectives n / CDS Mrin del Rey n / CDS Westlke Are W 5 SMB Wtershe d Urn Runoff Pollution Removl: Beethoven Street W 6 SMB Wtershe d Urn Runoff Pollution Removl: Dlton & 30th W 7 SMB Wtershe d Urn Runoff Pollution Removl: 10th & 36th n / Thurmn Ave Trs h Removl n / Trnsporttio n Contmintion Reduction ( 99): Inserts Ctch Bsin n / Trnsporttio n Contmintion Reduction ( 01): Covers Ctch Bsin n / Trnsporttio n Contmintion Reduction : Ctch Bsin Inserts M rin del Rey S MBRC (Prop A ) C ompleted? C ounty of L A $ 125,29 5 CDS Instlltion t Mrin de l Rey Bot Lunch, Implemented y LAC-DBH W estlke Are S MBRC (Prop A ) C omplete d C ity of L A $ 111,07 3 Implemented y City of LA DP W B eethoven Street C ity of Los Angele s Ongoin g City of Lo s completion Sept Angeles 0 4 D lton & 30th C ity of Los Angele s Ongoin g City of Lo s completion Sept Angeles th & 36th C ity of Los Angele s Ongoing City of Lo s c ompletion Sept Angeles 0 4 T hurmn Ave C ity of Los Angele s C ompleted Oc t City of Lo s Angeles Vrious loctions throughout the City nd Bllon Creek C ity of Los Angeles C omplete d City of Lo s Angeles W estlke Are C ity of Los Angele s J uly City of Lo s Angeles Vrious loctions throughout the City nd Bllon Creek W ATER QUALITY Potentil s n / Bllon Wtershe d Storm Drin Mp W tershed-wide Snt Monic Bykeeper C ity of Los Angeles C omplete d City of Lo s Angeles $200K prt of $2 3M prt of $500K prt of $500K This to This line This line project will instll tret oil/grese in end-of- project will instll nd trsh removl system Stormceptor runoff end-of- project will instll nd trsh removl system $ 860K This project will instll fres h creek unit to cpture trsh flowing to Bllon Creek $ 175K This project instlled 134 ctc h sin inserts throughout the City of LA nd Bllon Creek prt of $630K The project will instll 800 ctch sin covers throughout the Westlke re to prevent trsh from entering the stormdrins $ 175K This project instlled 134 ctc h sin inserts throughout the City of LA to cpture trsh Mp Creek of ll stormdrins Wtershed in Bllon 120 Bllon Creek Wtershed Tsk Force

61 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) M p Description of project component s N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) P roject Cos t nd/or ojectives n / Bllon Cree k Wter Qulity Improvement CDS instlltions W 8 Osge Schoo l (AKA Westport Heights Elementry School) BMPs n / Pulic Eductio n nd Outrech W 9 Pulic Prking Lo t Structurl BMP W 10 Speedwy BMP s 1&2 Vrious loctions wtershed in S MBRC (Prop A) Applictio n Pending W estchester S MBRC (Prop A ) Applictio n Pending C ity of LA $ 1,239,77 6 Implemented y City of LA DP W L AUSD $ 500 K Implemented y City of LA DP W W tershed-wide T B D C oncep t T B D T B D Develop n eduction n d outrech progrm for the pulic nd usiness to encourge source reduction (reduced pckging) nd discourge litter M rin del Rey LA Co Beches & Hrors n / C tch Bsin Lel s Vrious loctions withi n the city of Los Angeles n / Bllon Cree k Deris Fences Appliction pending LA Co Beches Hrors V enice Bech C ity of Los Angele s P lnne d City of Lo s Angeles B llon Creek Chnnel County of Lo s Angeles C ity of Los Angeles O ngoin g City of Lo s Angeles County Angeles of Los County Angeles H ABITAT & NATIVE VEGETATION RESTORATION Completed, Under Construction, Ongoing, or Pendin g H 1 Bllon Wetlnd s Dunes Restortion Dept nd of Los of $ 1 26M Structurl BMPs t Mrin de l Rey County-owned pulic prking lots $ 479K A vriety of BMPs will e implemented in the re trsh nd oil/grese, nd llevite flooding to tret lso $ 285K The project lels ctch sin s throughout the City of LA Approximtely 11,500 in Bllon Creek T BD Instll multiple deris fences t o ctch dditionl trsh nd deris B llon Wetlnds S MBRC (Prop 12 ) F unded A re B $ 97,06 0 Implemented y Friends o f Bllon Wetlnds H ABITAT & NATIVE VEGETATION RESTORATION Potentil s H 2 Westchester Bluff s Restortion H 3 Kuruvung Spring s Restortion Westchester Bluffs, west of Lincoln U niversity High School Grielino Tongv Springs Foundtion Ctellus Sempr? & Remove costl non-ntives sge scru nd restore C onceptul L AUS D Restortion of Kuruvung Spring s s culturl nd including resource, ntive vegettion eductionl restortion of Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 121

62 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) Mp N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) Cos t H 4 Bronson Cnyo n Enhncement H 5 Fern Del l Enhncements H 6 Stone Cnyo n Creek Restortion Bronson Griffith Cnyon, Prk City of Los Recretion Prks Angeles nd F ern Dell, Griffith Prk City of Los Angele s Recretion nd Prks UCLA Seeds School Cmpus, Corrine Elementry P ARKS Completed, Under Construction, Ongoing, or Pendin g P 1 Bldwin Hills Pr k Mster Pln P ARKS Potentil s None identified Bldwin Bllon Hills, Creek south of Bldwin Hills Conservncy C onceptul City of Lo s Angeles C onceptul City of Lo s Angeles Lnd cquisition plnned T RANSPORTATION & TRAILS Completed, Under Construction, Ongoing, or Pendin g n / Culver City Bik e Rcks on Busses T 1 Mrin Costlin k Ferry T 2 West Hollywoo d Bicycle Mster Pln n / Bllon Creek Tri l nd Bikewy Improvements Phse I Description of project nd/or ojectives Removl plnting live ok Inclusion plnts of of of nonntives Cliforni components nd wlnut regionlly-dpted nd U C Regents Removl of exotics/non-ntiv e vegettion nd plnting of ntive plnts nd trees V rious Gol: develop progrm o f resource stewrdship, restore nturl res (including removl of non-ntive plnts), improve recretion, culture, & eductionl experience A ll City Busses C ulver Cit y D ue June Bike rcks on ll city usses Bu s rider cn ride to us stop Plce ike on rck Get off t distnt destintion, then ride to work, etc Mrin del Rey Four ferry stops t Chce Prk, Fire Dock, Fishermn s Villge, Mrin Bech Environment Now, LA Co Beches & Hrors, CA Costl Conservncy Summer 2002 (completed) Summer (in-process) pilot, 2003 C ity Limits W Hollywood MT A Bein g Implemented Bllon Creek Culver S MM C Constructio n B lvd est to Culver Pending C it y L A Co Dept of Beches & Hrors City of Angeles Los Four-stop, two-vessel ferries providing lterntive trnsporttion nd on-the-wter opportunity for the pulic Plnning underwy nd implementtion $ 448,984 Improvements to ike tril cces s points, lndscping, signge, nd pulic outrech 122 Bllon Creek Wtershed Tsk Force

63 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) Mp N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) Cos t T RANSPORTATION & TRAILS Potentil s T 3 Bllon Wetlnd s Wlkwy T 4 Ply Vist Bicycl e Tril n / Bllon Creek Tri l nd Bikewy Improvement T 5 Mrin de l Rey/Bllon Creek Tril Beneficil Use Enhncement T 6 Creek to Bldwi n Hills Tril under Utility Lines T 7 Centinel Cree k Tril Greenwy Pcific Ave Wetlnds to Bllon Ply Vist Bllon Creek Along existing ikewy djcent Bllon Creek to to Description of project nd/or ojectives components L A Co DPW Wlkwy from Pcific Ave to th e wetlnds C ltrns Bicycle tri l Prtilly Stte Prks funded Recretionl Trils Progrm Bldwin Hills Regionl Conservtion Authority to implement B llon Creek middle L A County Dept jett y of Beches & Hrors From L Cieneg/Firfx to Hills etween Crmon & Huser Connections to Ply Vist nd Bllon Creek n / A re C Tri l Fiji Wy est to es t end of Prcel C, ner 90 Fwy n / O ne Less C r Bllon Cree k Wtershed y Ongoing/In Process Appliction/ Pending T BD Preliminry / Conceptul T BD (NET?) Preliminry / Conceptul LA County Flood Control District owns fee & esement rights of wy Over K L A County $ million $200 Recretionl improvements ojectives ikewy Improve eneficil uses of lower rech of Bllon Creek y expnding non-wter relted recretionl opportunities, enhncing hitt, nd improving the pedestrin wlkwy V rious T B D Bicycle, hiking, & hit t connection, retention, including recretion, V rious T B D Multiple ojective s E nvironment Now P ropos l Tri l stormwter etc L ACBC O ngoin g Estimted 300,000,000 mile s driven dily in LA At 22 MPG: Totl Gs = 136,363,636 gllons; Hydrocrons = 18,502,202 Ls ; Cron Dioxide + 2,748,000,000 Ls ; Nitrous Oxide = 9,185,022 Ls (Bsed on Environmentl Protection Agency document EPA420-F ) Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 123

64 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) Mp N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) Cos t T 8 City of Culver Cit y Bicycle Mster Pln n / North/Est/Centr l Los s Angeles T 9 UCLA Bicycl e Mster Pln Bicycle T 10 Westwood Trffi c Mitigtion Wilshire Blvd T 11 Westwoo d Ntionl Cemetery Gte Access n / Del Re y Neighorhood Council re Bike Rcks on city streets C ity Limits C ulver City - MT A Preliminry / Conceptul UCLA Cmpus Westwood Provide ssure open icycle nd gte to ccess Jefferson on South Lincoln on West Wshington on North CC City limits on Est T 12 T rffic Mitigtio n Lincoln Boulevrd es t Jefferson-Fiji Description of project nd/or ojectives components BMP lys out streets nd rods within CC city limits Appliction to MTA will ssist n funding ike trils Clss I, II, III User-friendly streets mke for ese of ike trnsporttion C ity of Los Angeles s connected with ne w Suwy system Deprtment of Veterns Affirs T 13 E xposition Light Ri l U SC to Snt Monic V riou s Preliminry / Conceptul S ITE RETROFIT Completed, Under Construction, Ongoing, or Pendin g S 1 Frrgu t Elementry site retrofit School S 2 Culver City Middl e School plnting project F rrgut Elementry Frrgu t Elementry Culver School City Middle V rious Ese Bicycle congestion in n d round UCLA cmpus Westside Bike working with City Council on trffic prolem for icycle riders LACBC/Westside drive Bike petition Plce ike rcks in usiness res for shoppers nd those going to eting estlishments C ltrns P endin g Add two trffic lnes to existin g Culver School City Middle Completed 9/2002 Completed 5/2000 Hwy Eliminte ike lnes Sidewlks Crete more congestion-more uto pollution Light ril Includes segments on ndoned icycle tril Ten re in project ril C CUSD De-pving project; provided tur f plyground nd trees next to Bllon Creek C CUSD Plnting project; includin g utterfly project ner creek; Sony & TreePeople with 124 Bllon Creek Wtershed Tsk Force

65 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) M p Description of project component s N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) P roject Cos t nd/or ojectives S ITE RETROFIT Potentil s S 3 Creekside Cmpu s nd Prk Ntive Lndscping/BMPs S 4 Creekside Cmpu s nd Prk Ntive Lndscping/BMPs S 5 Creekside Cmpu s nd Prk Ntive Lndscping/BMPs S 6 Creekside Cmpu s nd Prk Ntive Lndscping/BMPs Syd Kronenthl Culver City Prk, T BD Preliminry / Conceptul C ulver City Prk, CC T B D Preliminry / Conceptul L inderg Prk, CC T B D Preliminry / Conceptul Mrin del Rey School & open ner creek Middle spce T BD Preliminry / Conceptul U RBAN STREAM RESTORATION Completed, Under Construction, Ongoing, or Pendin g None identified U RBAN STREAM RESTORATION Potentil s n / Urn Strem(s ) Restortion n / Modifiction o f Bllon Creek Chnnel GENERIC PROJECTS n / Constructe d Wetlnds C ulver City T B D Wtershed improvement; overl y of existing open spce uses C ulver City T B D Wtershed improvement; overl y of existing open spce uses C ulver City T B D Wtershed improvement; overl y of existing open spce uses L AUSD & LA T B D Wtershed improvement; overl y C it y of existing open spce uses V rious V riou s P ropose d V riou s Restortion of urn strems, including Sctel Creek, nd other remnnt strems, including Wilshire Country Clu, Longwood Street, Stone Cnyon Drive/8th Creek V rious V riou s P ropose d V riou s Modifiction of Bllon Cree k Chnnel, to opportunities t chnnel rech identify ny current to modify the specific loction or T BD T B D T B D T B D Developed constructed wetlnd s n / P ulic Prk Retrofi t C ity/county Prk s W tershed Citie s Cities nd L A County to improve runoff Retrofit of pulic stormwter, plnt vegettion, nd ntive vegettion pproprite with wter non- prks ntive replce where use to qulity retin Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 125

66 T ABLE 4-1 ( continued ) Bllon Creek Wtershed Inventory (with Mp Identifiers) M p Description of project component s N o P roject nm e P roject Loction & Siz e P roject Sponso r S ttu s P roperty Owner(s ) P roject Cos t nd/or ojectives n / Retrofit Stree t Segment V rious V riou s P ropose d V riou s Retrofit/re-engineer segment o f street, grssed pvement to replce swles nd n / P rking Lot Retrofi t V riou s V riou s P ropose d V riou s Retrofit lrge prking lot, t o remove curs nd instll porous pvement) n / Estlish Stormwter Retention Site n / Strtegic Sit e Improvements n / Pulic School Sit e Retrofit n / Retrofit of Line r Corridor Vrious existing open spces, or proposed redevelopment sites V rious P ropose d V riou s Estlish stormwter retentio n curs instll site in the upper wtershed, reduce stormwter flows nd promote infiltrtion V rious V riou s P ropose d V riou s Strtegic Site Improvements (e g, Elementry, Middle, nd High Schools Vrious medins, corridor, line oulevrd utility former ril n / R etrofit lrge sit e existin g Vrious institutionl, commercil, developments industril with porous to identify specific site for retrofit tht cn tke dvntge of proximity of prk nd open nd ccomplish multiple chnnel enefits) V rious P ropose d V riou s Retrofit pulic school site, t o reduce impervious surfces, stormwter, plnt ntive vegettion, increse shde reduce energy costs) V rious P ropose d V riou s Retrofit liner corridor (e g, retin (nd medin, utility corridor, former ril line) to retin stormwter nd plnt ntive vegettion V rious P ropose d V riou s Retrofit lrge site (e g, colleg e cmpus, movie studio) to retin stormwter, either ove or ground, nd include ntive under vegettion 126 Bllon Creek Wtershed Tsk Force

67 GENERAL Overrching Criterion Assure progress towrd short nd long term Tsk Force gols nd ojectives Loction-Relted Trgets criticl prolem res Represent different lnd uses Pulic property or willing owner/seller Promote equitle geogrphic loction (upper nd lower wtershed) Fesiility-Relted Technicl fesiility Fesiility of monitoring Expected regultory cceptnce Ese of mintennce Cost-Relted Comprehensive cost estimte (i.e., over project lifetime) Stisfctory cost-enefit rtio Strong potentil for funding prtners Aesthetic-Relted Improve ppernce of site/re Visile Loction Provide quick fix/visile results Other Provide multiple enefits (e.g., wter supply, recretion, etc.) Protect pulic sfety Brod stkeholder support New or lterntive BMP techniques Inspires stkeholder excitement WATER QUALITY RELATED Address identified pollutnts of concern (e.g., existing eneficil use impirments) Reduce downstrem pollutnt lods nd effects/ impcts (e.g., vi iostimultory compounds) Reduce cute/chronic toxicity of chemicl Comply with regultory requirements (e.g., NPDES permit) Miniml impct on chnnel hydrulics Mintin or enhnce flood protection Mitigte flood peks Enhnce erosion control (minimize sediment loss/ lods) Protect groundwter qulity HABITAT-RELATED Protection or restortion to rre, thretened or endngered species Cretion, improvement or expnsion of functionl nd sustinle hitt Improve downstrem qutic environment Protect nd restore of wetlnds Promote or enhnce ntive vegettion Enhnce iodiversity Restore or promote corridors for species migrtion Provide pssive recretionl opportunities Provide eductionl opportunities Becuse of the limited mount of ville informtion for projects included in the inventory, the consultnt tem recommended shorter criteri list tht included those fctors tht could generlly e determined with limited project informtion, including: Trgets Prolem Ares Different Lnd Uses Pulic Property Improve Appernce Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 127

68 Figure 4-2 Bllon Creek Wtershed Opportunities SOURCE: Los Angeles County, Deprtment of Pulic Works, Wtershed Boundries, Chnnels, SCAG 1996 Lnd Use, nd Rods My 2003; Cliforni Deprtment of Forestry, Fire nd Resource Assessment Progrm Vegettion 2002; EIP Assocites, GIS Septemer Bllon Creek Wtershed Tsk Force

69 PROJECT TITLE C ulver City High School, Middle School, nd Frrgut Elementry School Retrofit PROJECT LOCATION Wtershed Qudrnt City Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Type Generl Chrcteristics Scope Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH Southwest Culver City BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form Culver City High & Middle Schools nd Frrgut Elementry School Culver City Unified School District Site retrofit Wter Qulity, Site Retrofit, Hitt Retrofit existing school to funnel runoff into ioswle long the southern edge of the site (djcent to the Creek) tht would drin to depressed plying fields tht would detin nd infiltrte stormwter Culver City Unified School District Culver City Unified School District Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection Pulic Property Restore Hydrologic Function Improve Appernce Optimize Wter Resources Visile Loction Improve Aqutic Hitt Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Proximity to Bllon Creek Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 129

70 SCOPE ASSUMPTIONS Ojectives Components Wter Qulity: Retin/tret 1-inch storm on site underground Flood Control: Retin 10-yer storm on site in depressed re Wter Supply: Infiltrte 1-inch storm on site Construct liner swle the length of creek frontge 1 to 3 feet deep Construct underground storge nd infiltrtion gllery Construct/instll sedimenttion/trsh pretretment fcilities Excvte ll fields to contin 10-yer storm Construct inlet/outlet structure for sin PRELIMINARY COST ESTIMATE Element Swle Swle grding/excvtion nd edge lndscping Underground Grding/excvtion Sediment/trsh Inlet Outlet infiltrtion gllery of llfield pretretment structures (ctch sin) structure (pipe) Prmenters Unit Cost Cost 1,770 y 10 feet $ 10 per cuic yrd $19,689 1,770 y 10 feet n/ $48,720 7 cres $ 522,702 per cre $3,690, ,534 sq ft $ 10 per cuic yrd $398,655 1 unit $ 30,000 per unit $30,000 2 units $ 10,000 per sin $20,000 n/ $10,000 Totl $4,217, Bllon Creek Wtershed Tsk Force

71 PROJECT TITLE Mr Vist Recretion Center Retrofit PROJECT LOCATION Wtershed Qudrnt City Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Type Generl Chrcteristics Scope Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH Southwest Los Angeles Mr Vist BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form Los Angeles Recretion nd Prks, Los Angeles City Deprtment of Pulic Works Strtegic Site Wter Qulity, Ntive Vegettion Retrofit recretion center to retrofit prking lots, instll underground infiltrtion systems, nd depress plying fields to detin stormwter from mjor storm events Los Angeles City Recretion nd Prks, Los Angeles City Deprtment of Pulic Works City of Los Angeles Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection P ulic Property? Restore Hydrologic Function Improve Appernce Optimize Wter Resources Visile Loction I mprove Aqutic Hitt? Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Proximity to two open chnnels: Sepulved Wsh (AKA Wlnut Creek) nd Swtelle Chnnel) Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 131

72 SCOPE ASSUMPTIONS Ojectives Components Wter Qulity: Retin/tret 1-inch storm on site underground Flood Control: Retin 10-yer storm on site in depressed re Wter Supply: Infiltrte 1-inch storm on site Construct diversion from Swtelle Boulevrd storm drin to est ll field Construct/excvte est ll fields to 4-foot depth (clculte upstrem re tht would e served y this size fcility) Construct underground storge nd infiltrtion gllery Construct/instll sedimenttion/trsh pretretment fcilities Construct inlet/outlet structure for sins Excvte west ll field to 4-foot depth (clculte upstrem re tht would e served y this size fcility) Construct underground storge nd infiltrtion gllery Construct/instll sedimenttion/trsh pretretment fcilities Construct inlet/outlet structure for sins PRELIMINARY COST ESTIMATE Element Excvtion of ll fields Estern Western ll fields ll field Underground infiltrtion gllery Estern Western Diversion Inlet ll fields ll field from storm drins Structure (ctch sins) Sedimenttion/trsh Outlet pretretment to storm drins (pipe) Swle round prking lots Replcement of removed trees Prmenters Unit Cost Cost 285,000 sq ft $ 10 per cuic yrd $422, ,500 sq ft $ 10 per cuic yrd $206, ,000 sq ft $ 12 per squre foot $3,420,000 $ 12 per squre foot $1,674,000 2 units $ 10,000 per unit $20,000 2 units $ 10,000 per unit $20,000 3 units $ 30,000 ech $90,000 $ 10,000 ech $20,000 18,295 sq ft $33, trees $ 25 per tree $625 Totl $5,906, Bllon Creek Wtershed Tsk Force

73 PROJECT TITLE Bldwin Hills to Bllon Creek Tril PROJECT LOCATION Wtershed Qudrnt City Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Southest BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form Los Angeles/Culver City DWP Powerline esement from Bldwin Hills to Bllon Creek Los Angeles City Deprtment of Wter nd Power, Los Angeles City Deprtment of Pulic Works P roject Type Liner Corridor Retrofit, Trnsporttion/Trils Generl Chrcteristics Scope Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH Tril, Site Retrofit, potentil Hitt Linkge Crete tril nd icycle pth from Bldwin Hills to Bllon Creek (vi LADWP powerline), introduce ntive vegettion, nd crete depression sins to infiltrte stormwter Los Angeles City Deprtment of Wter nd Power, Los Angeles City Deprtment of Pulic Works City of Los Angeles Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection Pulic Property Restore Hydrologic Function Improve Appernce Optimize Wter Resources Visile Loction Improve Aqutic Hitt Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 133

74 SCOPE ASSUMPTIONS Ojectives Components PRELIMINARY COST ESTIMATE Element Excvtion Inlet Wter Qulity: Retin/tret 1-inch storm on site underground Flood Control: Retin 10-yer storm on site in depressed re Wter Supply: Infiltrte 1-inch storm on site Construct stormwter retention fcilities nd mendering tril (similr to Sun Vlley powerline esement) Instll ntive plnts nd temporry irrigtion system Construct liner ike pth the entire length of esement Construct inlet structures to llow djcent neighorhood stormwter runoff into sins of retention sins Structure (ctch sins) Sedimenttion/trsh Outlet Ntive pretretment to storm drins (pipe) lndscping Prmenters Unit Cost Cost 121,859 sq ft $ 10 per cuic yrd $676,995 6 units $ 10,000 per unit $60,000 6 units $ 30,000 ech $180,000 $ 10,000 ech $10, cres $244,916 Irrigtion system $50,000 Bike Pth/Tril 116,673 sq ft $ 5 per squre foot $584,363 Totl $1,806, Bllon Creek Wtershed Tsk Force

75 PROJECT TITLE Lder County Prk Retrofit PROJECT LOCATION Wtershed Qudrnt Southest C ity Los Angeles (County) Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Type Generl Chrcteristics Scope Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form Convert storm drin (running through prk) to dylighted creek nd instll dm tht would retin stormwter during mjor storm events Los Angeles County Prks nd Recretion Site Retrofit Wter Qulity, Ntive Vegettion Retrofit county stormwter prk to retin Los Angeles County Prks nd Recretion Los Angeles County Deprtment of Pulic Works County of Los Angeles Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection Pulic Property Restore Hydrologic Function I mprove Appernce? Optimize Wter Resources Visile Loction Improve Aqutic Hitt Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Nturl topogrphic depression with underlying storm drin Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 135

76 SCOPE ASSUMPTIONS Ojectives Components PRELIMINARY COST ESTIMATE Element Excvtion/Erthwork Underground Inlet from storm drin Sedimenttion/trsh Wter Qulity: Retin/tret 1-inch storm on site underground Flood Control: Retin 10-yer storm on site in depressed re Wter Supply: Infiltrte 1-inch storm on site Restore/ dylight nturl creek Construct underground storge nd infiltrtion gllery Construct/instll sedimenttion/trsh pretretment fcilities Construct inlet/outlet structure for sins Construct 18-foot-high dm t downstrem end of prk Elevte existing sketll courts so they re ove 2-yer storm infiltrtion gllery pretretment Prmenters Unit Cost Cost 125,000 sq ft $ 10 per cuic yrd $231, ,000 sq ft $ 12 per squre foot $1,500,000 2 units $ 10,000 per unit $20,000 2 units $ 30,000 ech $60,000 Lndscping $26,750 Creek Dylighting $100,000 Outlet Erthen to storm drin (pipe) Dm $ 10,000 ech $10, y 18 feet 20 per cuic yrd $133,333 Reconstruction of mphithetre $200,000 Totl $2,281, Bllon Creek Wtershed Tsk Force

77 PROJECT TITLE Lfyette Prk Retrofit PROJECT LOCATION Wtershed Qudrnt City Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Type Generl Chrcteristics Scope Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH Northest Los Angeles Lfyette Prk BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form Los Angeles Deprtment of Recretion nd Prks, Los Angeles City Deprtment of Pulic Works Prk Retrofit Wter Qulity, Site Retrofit, Hitt Retrofit to depress portion of llfields to infiltrte stormwter nd elevte one plying field (ove floodwter retention level to preserve recretionl opportunities) nd introduce ntive vegettion Los Angeles Deprtment of Recretion nd Prks, Los Angeles City Deprtment of Pulic Works City of Los Angeles Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection Pulic Property R estore Hydrologic Function? Improve Appernce Optimize Wter Resources Visile Loction Improve Aqutic Hitt Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Existing prk includes nturl depression tht could e dpted for stormwter detention Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 137

78 SCOPE ASSUMPTIONS Ojectives Components PRELIMINARY COST ESTIMATE Element Excvtion/Erthwork Underground Inlet from storm drin Sedimenttion/trsh Wter Qulity: Retin/tret 1-inch storm on site underground Flood Control: Retin 10-yer storm on site in depressed re Wter Supply: Infiltrte 1-inch storm on site Construct upstrem diversion Construct underground storge nd infiltrtion gllery Construct/instll sedimenttion/trsh pretretment fcilities Excvte ll fields to contin 10-yer storm Construct inlet/outlet structure for sin infiltrtion gllery pretretment Prmenters Unit Cost Cost 161,500 sq ft $ 10 per cuic yrd $299, ,500 sq ft $ 12 per squre foot $1,938,000 1 unit $ 10,000 per unit $10,000 1 units $ 30,000 ech $30,000 Lndscping $22,750 Creek Dylighting $100,000 Outlet to storm drin (pipe) $ 10,000 ech $10,000 Reconstruction of fields $250,000 Totl $2,659, Bllon Creek Wtershed Tsk Force

79 PROJECT TITLE Residentil Street Segment Retrofit PROJECT LOCATION Wtershed Qudrnt City Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Type Generl Chrcteristics Northwest Los Angeles Single lock of loction TBD BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form residentil street Los Angeles Deprtment of Trnsporttion, Los Angeles City Deprtment of Pulic Works Street Segment Retrofit Wter Qulity, Site Retrofit, Hitt P roject Scope Retrofit street to remove curs, increse pervious res, reduce runoff, promote infiltrtion nd include ntive vegettion Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH Los Angeles City Deprtment of Trnsporttion, Los Angeles City Deprtment of Pulic Works City of Los Angeles Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection Pulic Property R estore Hydrologic Function? Improve Appernce Optimize Wter Resources Visile Loction Improve Aqutic Hitt Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Serve s demonstrtion project for street retrofit cross entire wtershed Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 139

80 SCOPE ASSUMPTIONS Ojectives Components Wter Qulity: Retin/tret 1-inch storm on site underground Demolish edges SEA concept of existing street nd reconstruct with swles nd infiltrtion fcilities similr to Settle PRELIMINARY COST ESTIMATE Element Prmenters Unit Cost Cost T otl $ 140 Bllon Creek Wtershed Tsk Force

81 PROJECT TITLE Oxford Flood Control Bsin Retrofit PROJECT LOCATION Wtershed Qudrnt City Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Type Generl Chrcteristics Scope Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH Southest BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form Unincorported Los Angeles County Oxford Flood Bsin, etween Mrin del Rey nd Wshington Boulevrd Los Angeles County Deprtment of Beches nd Hrors Site Retrofit Wter Qulity, Site Retrofit, Ntive Vegettion Retrofit flood control sin to crete two or more tretment ponds, introduce ntive vegettion, provide inlet filtrtion fcilities nd other structurl mesures to improve wter qulity Los Angeles County Deprtment of Beches nd Hrors Los Angeles County Deprtment Beches nd Hrors of Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection Pulic Property Restore Hydrologic Function Improve Appernce Optimize Wter Resources Visile Loction Improve Aqutic Hitt Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Direct connection to Mrin del Rey nd Snt Monic By wters Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 141

82 SCOPE ASSUMPTIONS Ojectives Components Mintin existing flood control ojective Wter Qulity: Tret 1-inch storm to reduce following pollutnt ctegories: Trsh, sediment, cteri, metls, orgnics, hydrocrons, nutrients Hitt: Provide ntive vegettion long edges nd islnd to fcilitte vin reeding Improve influent tretment fcilities to provide influent trsh/sediment tretment Construct erm cross wetlnd to isolte upstrem primry sedimenttion sin from downstrem wetlnd Construct inlet/outlet fcilities etween primry sin nd wetlnd Consider/instll ertion fcilities upstrem or in downstrem sins/wetlnd Improve downstrem sins/wetlnd with hitt Instll disinfection fcilities t downstrem effluent structure PRELIMINARY COST ESTIMATE Element Excvtion/Erthwork Contminted Inlet Soil Disposl from storm drin Sedimenttion/trsh Berm Construction Inlet pretretment etween sins (ctch sin) Lndscping Aertion Disinfection fcility with Ntive Vegettion fcility Prmenters Unit Cost Cost 144,600 sq ft $ 2 per cuic yrd $289,238 Unknown T BD?? 2 units $ 10,000 per unit $10,000 2 units $ 30,000 ech $30, x 30 x 20 feet $ 7 per cuic foot $93,333 1 unit $ 10,000 $10, cres $ 50,000 per cre $110,000 1 unit $ 100,000 per unit $100,000 1 unit T BD?? Totl $353, Bllon Creek Wtershed Tsk Force

83 PROJECT TITLE University High Retrofit/Kuruvung Springs Restortion PROJECT LOCATION Wtershed Qudrnt City Site Other Relevnt Jurisdiction(s) PROJECT DESCRIPTION Type Generl Chrcteristics Scope Prospective Sponsor(s) Property Owner(s) CONSISTENCY WITH Northwest Los Angeles BALLONA CREEK WATERSHED MANAGEMENT PLAN Evlution Form University High School, West Los Angeles Los Angeles Unified School District Hitt Site Retrofit, Hitt Retrofit prking lots, crete underground infiltrtion gllery under southern prking lot, depress centrl plying fields to detin stormwter in mjor events Crete strem etween existing wterfll nd culturl site, crete freshwter mrsh hitt t end of new strem chnnel, nd restore culturl resource vlues Springs Foundtion Los Angeles Unified School District Los Angeles Unified School District Short List Selection Criteri Bllon Creek WMP Gols Trgets Prolem Ares Improve Wter Qulity Different Lnd Uses Mintin Flood Protection Pulic Property Restore Hydrologic Function Improve Appernce Optimize Wter Resources Visile Loction Improve Aqutic Hitt Quick Fix/Visile Results Improve Terrestril Hitt Multiple Benefits Improve Access to Open Spce New or Alt BMP technique Pedestrin/Bicycle Access nd Sfety Address Pollutnts of Concern Lndscpe Stewrdship Mintin Flood Protection Coordinte Across Jurisdiction s Mitigte Flood Peks Multi-Ojective Protect/Restore Wetlnds Science s Bsis for Plnning Enhnce Ntive Vegettion Pulic Outrech nd Eduction Enhnce Biodiversity Ongoing Mngement Process Pssive Recretion Sustinle Economic Development OTHER CONSIDERATIONS Restore culturl resource vlues Los Angeles County Deprtment of Pulic Works Wtershed Mngement Division 143

84 SCOPE ASSUMPTIONS Ojectives Components Wter Qulity: Retin/tret 1-inch storm on site underground Flood Control: Retin 10-yer storm on site in depressed re Wter Supply: Infiltrte 1-inch storm on site Hitt: Improve wetlnd hitt nd crete riprin hitt long restored creek Restore nturl creek etween existing upstrem spring nd downstrem wetlnds Excvte ll fields in centrl portion of site to contin 10-yer storm Construct underground storge nd infiltrtion gllery under lrge downstrem prking lot Construct storm drin diversion fcilities to divert 1-inch storms into infiltrtion gllery under prking lot Construct/instll sedimenttion/trsh pretretment fcilities PRELIMINARY COST ESTIMATE Element Excvtion Underground Inlet of ll fields from storm drin Sedimenttion/trsh Outlet Wetlnd Creek infiltrtion gllery pretretment to storm drin (pipe) lndscping Restortion/Lndscping Prmenters Unit Cost Cost 96,000 sq ft $ 10 per cuic yrd $177,778 87,120 sq ft $ 12 per squre foot $1,045,440 1 unit $ 10,000 per unit $10,000 1 unit $ 30,000 ech $30,000 $ 20,000 ech $20, cre $22, y 10 feet 10 per sq ft $67,000 Totl $1,372, Bllon Creek Wtershed Tsk Force