BEST MANAGEMENT PRACTICES IMPLEMENTATION REPORT

FOR

SANTA SUSANA FIELD LABORATORY

Prepared for:

THE BOEING COMPANYSANTA SUSANA FIELD LABORATOR Y

Prepared by :

MWH300 N . LAKE AVENUEPASADENA, CA 9110 1

September 2006

HDMSP00083051

TABLE OF CONTENT SSection No. Page No.

1 .0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1- 1

2.0 BMP UPGRADES BY OUTFALLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12 .1 Outfalls 001, 002, 008 and 009 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12 .2 Outfa11003 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12.3 Outfa11004 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22.4 Outfalls 005 and 007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22.5 Outfall006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32.6 Outfall010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32.7 Outfall011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-42.8 Outfalls 012-017 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-42.9 Outfall018 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-5

3.0 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

LIST OF FIGURES

2-1 - Outfall 003 BMP Upgrades - Layout and Profile

2-2 - Outfall 004 BMP Upgrades - Filter Bed s

2-3 - Outfall 004 BMP Upgrades - Filter Bed, Underdrain, and Overdrain Piping

2-4 - Outfall 005 BMP Upgrades - Layou t

2-5 - Outfall 006 BMP Upgrades - Layout

2-6 - Outfall 007 BMP Upgrades - Layout

2-7 - Outfall 010 BMP Upgrades - Layout and Profile

2-8 - Outfall 018 BMP Upgrades - Layou t

2-9 - Outfall 018 BMP Upgrades - Profil e

USPAS3S02/Rocketdyne SSFL/SSFL Permitting and Compliance/2005 13267 and related/BMP Upgrade Plan/BMP UpgradeReport_B

-I-

HDMSP00083052

1 .0 INTRODUCTION

The Boeing Company (Boeing ) is commi tted to implementing an iterative Best

Management Practice (BMP) approach to pursue surface water discharge

compliance objectives defined by their NPDES permit obligations . This approach

was described in the 13267 Technical Repo rt, submitted by Boeing to the Regional

Water Quality Control Board (RWQCB ) on December 16, 2005 (Boeing 2005). Also

pursuant to the 13267 Technical Repo rt, Boeing prepared a BMP Effectiveness

Sampling Workplan (Workplan ) in May 2006 (MWH 2006 ) . The activities described

in the Workplan were substantially implemented during the summer of 2006 and are

being incorporated into BMP upgrades . The majority of these upgrades will be

substantially complete by October 15 , 2006 and will be finished no later than end of

the year , pursuant to the 13267 Technical Report .

The recent efforts to upgrade and improve BMP performance included a prelimina ry

hydrological study , a filtration pilot test and a BMP Effectiveness Monitoring

Program . These efforts served to monitor and evaluate current BMPs installed at

several Outfall locations onsite in order to implement pilot tests of new BMP

technologies . Based on prelimina ry results from the hydrologic study , filtration pilot

test and BMP Effectiveness Monitoring Program, new BMP upgrades at several

Ou ttalls onsite have been designed and are currently undergoing construction .

Boeing is providing this document as an annual BMP implementation report that

summarizes the current BMP maintenance and upgrades . This BMP Upgrade

Report provides preliminary draft plans and specifications and describes current

developments in the construction of the new BMP upgrades .

Since new BMP upgrades are currently in the construction phase , all plans,

specifications and drawings are preliminary drafts . Ongoing changes to these

preliminary drafts have occurred as field conditions dictate throughout the course of

BMP upgrade construction .

1-1

HDMSP00083053

In addition to the structural BMP upgrades described in this report, as a

precautiona ry measure, Boeing has emplaced runoff control devices and erosion

control measures site wide, where appropriate, to mitigate the movement of

constituents into the watershed from historical Site industrial areas . Furthermore,

following the Topanga Fire, Boeing emplaced extensive erosion control BMPs, in

conjunction with hydromulching over 860 acres of the site in an e ffort to reduce

erosion of ash and soil . Boeing has also collected and removed over 920 tons of

ash derived from the Topanga Fire for off site disposal . Boeing continues to

investigate erosion sources and erosion control measures at the site, and will

improve BMPs as appropriate , to be tter control sediment and associated metals

transport into the su rface water .

1-2

HDMSP00083054

2.0 BMP UPGRADES BY OUTFALL

2.1 OUTFALLS 001, 002, 008, 009

Since Outfalls 001 , 002, 008 and 009 are each located within stream channels and

have large drainage areas , implementing significant structural BMP upgrades would

take several years to permit , design and construct . Instead , sediments will be

removed upstream of straw bales and straw bales will be refurbished in each of

these channels , if allowable under existing permits . Digital data loggers with flow

meter devices will also be installed at Outfalls 001 , 002, 008 and 009 , where not

already in place . Currently , sediments have been removed upstream of straw bales

in the channel at Outfalls 001 and 002 . Completion of BMP maintenance and the

digital data logger installations are anticipated to be completed by the end of 2006 .

2.2 OUTFALL 003

At Outfall 003, an engineered, at-grade, two stage sand and granular activated

carbon (GAC)/zeolite storm water filter system will be installed north of the existing

sample location . Figure 2-1 Outfall 003 BMP Upgrades - Layout and Profile

shows preliminary draft layout and profile drawings . The primary stage sand filter

system is separated by an underdrain flow barrier from the secondary stage

GAC/zeolite filter system .

These passive filter beds rely on gravity head for filtration . In addition , distribution

piping will be installed to distribute flow evenly across the media and to allow for

adequate retention time . The current outfall location will be relocated a li ttle further

downstream of the existing sample location so that it is downstream of the upgraded

BMP. A digital data logger with a flow meter device will also be installed to monitor

flow rates during rain events .

Currently , the existing slope for the new sand and GAC/zeolite filter beds has been

fla ttened , the flow barriers are being constructed and the sand media is being put i n

2-1

HDMSP00083055

place . Completion of the BMP upgrades and the digital data logger installation are

anticipated to be completed by the end of 2006 .

2.3 OUTFALL 004

At Outfall 004, the upgraded structural BMP's consist of a sand filter bed upstream of

a mesh bag media filter bed of GAC and zeolite . Figure 2 -2 Outfall 004 BMP

Upgrades - Filter Beds and Figure 2-3 Outfall 004 BMP Upgrades - Filter Bed,

Underdrain , and Overdrain Piping, show preliminary draft layout drawings . Both the

sand filter and the GAC/zeolite bed comprise an area of 500 ft2 each . An underdrain

hydraulic flow distribution device will be installed to uniformly distribute storm water

over the surface of the filter bed . A digital data logger with a flow meter device will also

be installed to monitor flow rates during rain events .

Currently, the existing straw bales have been removed for upgrade to a HDPE

underdrain flow barrier . GAG-filled mesh bags were also removed from the existing

filter bed in order to be replaced with the new filter media . The HDPE underdrain

and perimeter flow barriers have both been constructed . Completion of the BMP

upgrades and the digital data logger installation are anticipated to be completed by

the end of 2006 .

2.4 OUTFALLS 005 and 007

At Outfalls 005 and 007, 6 foot tall dams will be used to retain storm water at each of

the Outfalls before being treated by a filtration system or off-site disposal of storm

water . Figure 2-4 Outfall 005 BMP Upgrades - Layout and Figure 2-6 Outfall

007 BMP Upgrades - Layout show preliminary draft site layout drawings . The

dams will be formed with gabions, which are wire mesh baskets containing 4-8 inch

size crushed rock. A geomembrane/geotextile material will be placed along the

surface of the water basin. A pump and tanks will be installed to capture a 10 year

24-hour storm volume for Outfall 005 . A separate pump and tank system will

capture a 2 year 24-hour storm volume for Outfall 007 . If a filtration system is used ,

2-2

HDMSP00083056

a filtration treatment system and pump station will be installed at each Outfall to filter

the pumped water and discharge the treated water at each existing outfall .

Currently , the areas were graded for dam construction , all rock anchors were set in

place and the gabion boxes were assembled and installed at both Outfalls . The

gabion boxes were completely filled with rocks at Outfall 005 and are currently being

filled at Outfall 007 . Completion of the BMP upgrades at both Outfalls are

anticipated to be completed by the end of 2006 .

2.5 OUTFALL 006

The structural BMPs at Outfall 006 consist of a sand filter bed upstream of a mesh

bag media filter bed of GAC and zeolite . Figure 2-5 Outfall 006 BMP Upgrades -

Layout shows the preliminary draft site layout drawing . The size of the sand filter

bed is approximately 1960 ft2 and the GAC/zeolite bed is 1215 ft2 . An underdrain

flow barrier will be constructed and installed between the sand bed and GAC/zeolite

layer to provide even hydraulic flow distribution . Both passive filter units rely on

gravity head for storm water filtration . A digital data logger with a flow meter device

will also be installed to monitor flow rates during rain events .

Currently , the existing GAO-filled mesh bags and sand have been removed in order

to be replaced with the new media and to make room for installation of the

downstream underdrain flow barrier , which is currently being constructed .

Completion of the BMP and the digital data logger installation are anticipated to be

completed by the end of 2006 .

2.6 OUTFALL 01 0

The existing structural BMPs at Outfall 010 consist of a sedimentation basin

upstream of a GAC mesh bag media filter bed . Figure 2-7 Outfall 010 BMP

Upgrades - Layout and Profile shows the preliminary draft site layout and profile

drawings. The BMP upgrades will consist of modifying the sedimentation basin int o

2-3

HDMSP00083057

a two-layered GAC/zeolite and sand filter bed with an underdrain system . The

passive filter beds rely on gravity head for storm water filtration . An underdrain

piping collection system will be connected to an effluent manifold beneath the

stainless steel containment wall . A digital data logger with a flow meter device will

also be installed to monitor flow rates during rain events .

Currently, construction of the BMP upgrades at Outfall 010 are near completion .

The underdrain system, all media layers and crushed rocked layers, stainless steel

wire mesh and underdrain piping system have all been installed . Installation of a

flow meter and a digital data logger are anticipated to be completed by the end of

2006 .

2.7 OUTFALL 01 1

At Outfall 011, mesh bags of GAC filter media were installed in May 2005 and BMP

maintenance improvements will be implemented . The filter media mesh bags will be

realigned to provide a uniformly sloping surface on the filter bed . The flow

monitoring chamber will be reinstalled to promote uniform overflow along the entire

perimeter of the chamber . A digital data logger with a flow meter device will also be

installed to monitor flow rates during rain events . Completion of the BMP upgrades

and the digital data logger installation are anticipated to be completed by the end of

2006 .

2.8 OUTFALLS 012-01 7

Outfalls 012-017 are internal outfalls consisting of Alfa (012), Bravo (013) and APTF

(014) test stands and three sewage treatment plants (015-017) . Note that industrial

operations have ceased at Outfalls 012, 013 and 014 . Furthermore, wastewater is

currently hauled off-site for disposal and the Sewage Treatment Plant (STP) no

longer operate or discharge treated sewage at Outfalls 015, 016 and 017. Additional

BMP upgrades are not currently planned for any of these Outfalls .

2-4

HDMSP00083058

2.9 OUTFALL 01 8

The structural BMP at Outfall 018 is a filter bed constructed as a series of eight filter

cells in the R-2 Pond concrete overflow channel . Figure 2-8 Outfall 018 BMP

Upgrades - Layout and Figure 2-9 Outfall 018 BMP Upgrades - Profile show

preliminary draft site layout and profile drawings, respectively . Each filter cell is

approximately 18 feet at its bottom wide by 10 feet long with eight cells connected in a

parallel flow arrangement as shown in the drawings.

The concrete channel has an approximate 10% slope allowing a 1-foot elevation

drop between succeeding cells . Each filter cell will be filled with aqueous phase GAC

and zeolite in bulk form . The top of each filter cell will be covered with approximately

4-inches of 2-inch minus crushed rock to prevent erosion of the GAC. Underdrain

pipes on the bottom of each filter cell will be covered with a filter sleeve and bedded

in 6-inches of coarse sand to prevent loss of GAC filter media through the

underdrain system . The 3-inch diameter underdrain laterals will be connected to two

10-inch diameter filtered water collection lines running under the eight filter cells . A

concrete mixing zone will be located at the downstream end of the filter cells directly

upstream of a flow monitoring flume .

Currently, the concrete box culvert channel and new sample monitoring location

have been completed . Construction of the Outfall 018 is currently on pause and is

awaiting final environmental approval .

2-5

HDMSP00083059

3.0 REFERENCES

1 . Boeing Company SSFL . 2005 . 13267 Workplan, Pursuant to Section 13267of the California Water Code , Santa Susana Field Laborato ry , VenturaCounty, California . December.

2. MWH. 2006. BMP Effectiveness Sampling Workplan . May.

USPAS3S02/Pocketdyne SSFUSSFL Permitting and Compliance/2005 13267 and related/BMP Upgrade Plan/BMP UpgradeReport _8

3-1

HDMSP00083060

FIGURES

HDMSP00083061

OUTFAI L- 20QETAILNotes

1 . Use Sch 40 perforated PVC pipe.2. Use PVC pipe with 0.5" perfo rations spaced 1' or less.3. Use 0 .25 SS machine screws to hold couplings pressure-fit.4. Use perforated and caps to cap the pipes.5. Overdrain pipes spaced in 1 ft parallels ; underdrain pipes spaced in 2 ft pa rallels .6. Location of anchors approximate . Space flow barrier anchors ("X")3.5' apart; space wire cloth unistrut anchors ("0") 3' apart.7. Existing sample box is marked "DI . "8. Triple waddle with silt fence . See Outfall 3 - Erosion Control Measures document for details.9. Underd rain flow barrier height to be 12 - 18" above ground surface.10. Place minimum 2" deep gravel layer under concrete channel.11 . Place concrete traffic bumpers along culvert channel to concrete pad of well RD-34A .

S.S. WIRE CLOTH PANEL SCEDUL EA 4' x 25' RectangleB 4' x 25 ' RectangleC 4' x 25' RectangleD 4' x 25' RectangleE 4' x 25' RectangleF 4' x 20' RectangleG 4' x 20' RectangleH 4' x 20' RectangleI 4'x 15' RectangleJ 4' x 28' RectangleK 4' x 25' Rectangle

Underdra inFlow Barrier(See Note 9)

2" or 3" Dia. PerforatedOverdrain Pipe(See Notes I thru 5)

3" Dia. Perfora tedLLayer -r - L4" Gravel Layer Underdrain Pipe

OUTFALL 3 PROFILEApp rox. Vertical Scale 1 ";

=Approx. Horizontal Scale 1 = 3

EXCAVATE EXISTING SOIL

LegendB Existing Groundwater

Monitoring Well

3" Dia. PerforatedUnderdrain Pipe

4" Gravel Laye r

Q M W

SS Wire Cloth8" Sand Laye r

Geotextile Fabric

SANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CAUFORNU

SEPTEMBER, 2006

OUTFALL 003 BMP UPGRADESLAYOUT AND PROFIL E

FIGURE 2-1

1 . INSTALL 44 LF OF UNDERDRAINFLOW BARRIER. MAX. DEFLECTIONOF ARC AT MIDPOINT 6 'SEE DETAILS 6-A AND 6-B

3. INSTALL24+24=48LFOF PERIMETER FLOWBARRIE R

4. INSTALL4L.F.OFPERIMETERUNDERDRAIN

PLASTIC SHEETLINING

STAIRWAY

Not to scale when printed f rom a PDF file.

NEW PERIMETERFLOW BARRIER

NEW PERIMETERSEE NOTE 3 UNDERDRAI N

SEE NOTE 4

PERIMETER FLOW BARRIERSEE NOTE 3

CONCRETE SWAL EAND SAMPLE CHAMBER

SCALE: 1"= 6'

8/22/06

OUTFALL 004 BMP UPGRADES 2-2

EnviroSolve FILTER BEDSFIGURE

28215 Agoura Road, Suite 200 , Agoura Hills , California 91301 PROJECT NO.AG.02.01

NOTES :

1 . OVERDRAIN PIPE SHALL BESLOTTED WELL SCREEN ORHAVE TWO ROWS OF 1/2" DIA .PERFORATIONS AT 900 SEPARATIONON PIPE CIRCUMFERENCE AND6"O.C .

2. UNDERDRAIN PIPE SHALL BESAME AS OVERDRAIN PIP E

3. INSTALL24+24=48LFOF PERIMETER FLOWBARRIE R

4. INSTALL 4 L .F OFPERIMETERUNDERDRAIN

STAIRWAY

1A TNot to scale when printed f rom a PDF file .

EnviroSolve28215 Agoura Road, Suite 200, Agoura Hills, California 91301

NEW PERIMETERFLOW BARRIERSEE NOTE 3

NEW PERIMETERUNDERDRAINSEE NOTE 4

3" PERFORATED PIPE OVERDRAINSEE NOTE 1

3" PERFORATED PIPE UNDERDRAINWITH 45° "Y" BRANCHES (TYP 6)SEE NOTE 2

PERIMETER FLOW BARRIERSEE NOTE 3

CONCRETE SCAL EAND SAMPLE CHAMBER

SCALE: 1"= 6'

OUTFALL 004 BMP UPGRADESFILTER BED , UNDERDRAIN , AND OVERDRAIN PIPING

8/22/06

2-3

FIGURE

PROJECT NO .AG .02 .01

Note: Existing NPDES Sample Locationis Marked "DI" .

SANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

OCTOBER 200 6

OUTFALL 005 BMP UPGRADES - LAYOUT

FIGURE 2-4

NOTES :

1 . REMOVE 2" MINUS CRUSHEDROCK FLOW BARRIE R

2. INSTALL 60 L .F. UNDERDRAINFLOW BARRIE RSEE FIGURE 6- 2

3. ADD 2" MINUS CRUSHEDROCK TO REPAIR EROSIO N

4. INSTALL 8 L.F. PERIMETERUNDERDRAI N

5 . INSTALL 12+12+8+12+12+24L.F. PERIMETER FLOW BARRIE R

6. ADD RIP RAP TO TSURFACE ELEVAT IMATCH SAND F I

7. ADD2"MINUSROCK TO TO PMESH. SURFATO MATCH SINCREASINSAND BEDEACH SIDE

OS AREA .)N TOER BED.

GUSHEDF S.S . WIREELEVATION

D FILTER BED0 2"ABOVE

OR OUTER 3 ft,

PERIMETER FLO WBARRIER

CRUSHED ROC K

SCALE: 1"= 10'

Not to scale when printed from a PDF file .

EnviroSolve28215 Agoura Road, Suite 200, Agoura Hills, California 91301

PERIMETER UNDERDRAINSEE NOTE 4

1960 S.F.

_50:__WIRE,2" O E

OUTFALL 006 BMP UPGRADES - LAYOUT

PERIMETER FLOW BARRIER

GRAMC.!F[E1 E

S.S. WIRE CLOTH PANEL SCHEDUL E

A 10'x 25' TRIANGLEB 10' x 27' TRIANGLEC 10'x 28' RECTANGLED 10'x 55 ' RECTANGLEE 10'x 50 ' RECTANGL EF 8'x 39 ' POLYGON

SEE NOTE 6 /5 .5. WIRE CLOTHPANELS

8/14/06

2-5

FIGURE

PROJECT NO.AG.02.01

Note : Existing NPDES Sample Locationis Marked "DI" .

Dam Footp ri n t

0 FEET 15T!NiQ

SCALE

C17 Toe of Berm

Top of Berm

Concrete e a• nay

4" Oak ~..0 .._ ..._ .._ .~.4" Oak

024" Oak

Backfill

30" Oak1\O

SANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

OCTOBER 2006

OUTFALL 007 BMP UPGRADES - LAYOUT

FIGURE 2-6

I

IFII

IFF

F

Existing GACMedia Bags

Gunnite BoxCulvert Channel

S.S . Wire Cloth Panel s(See Panel Schedule for Sizes)(See Figure 3)

Geotextile

Existing-

/ Sample Boxtf ll 10Ou aSample/SensorLocation Rock

NOTES :1) Location of wire cloth unistrut anchors C0') approximate.Space anchors 3' apart See Detail AN-1 for installation details.2) No geotextile fabric to be placed in wire c loth panel sections A, B,and C. Place 1 ft of fab ri c at upstream side of sec tion D .

A

SAMPLE BOX andPARSHALL FLUMESEE FIGURE 8

BOX CULVERTSEE FIGURE 7

Fabric

OUTFALL 10 DETAIL1" = 10'

Existing SSWeir Structure

6" Sand Laye rGeotextile Fabric

3" Diam Pe rforatedUnderdrain Pipe

A - A' PROFILENO SCAL E

SS Wire Cloth

OUTFALL 10in = 30'

S.S. WIRE CLOTH PANEL SCEDULEA 4' x 25' RectangleB 4' x 25' RectangleC 4' x 30' RectangleD 4' x 35' RectangleE 4' x 35' RectangleF 4' x 35' RectangleG 4' x 40' RectangleH 4' x 40' RectangleI 4' x 40' RectangleJ 4' x 40' RectangleK 4' x 35 ' Rectangle

4

2" Minus CrushedRock on Topof Coarse Sand

Geotextile FabricZeolite LayerGAC Layer

4" Gravel Layer

Existing ShotcreteLined Basin

A P

MWH

D SANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

AUGUST 31, 2006

OUTFALL 010 BMP UPGRADESLAYOUT AND PROFIL E

FIGURE 2-7

i

R-2 POND0'

36 CORRUGATED PIPE

8'

18'

26'

38'EXISTINGUPPER STAIRWAY CELL 1

48'

NEW GRAVELWALKWAY

CELL 2

58'

CELL 3

68'

SEE NOTE 2

CELL 4

CELL 5

CELL 6

CELL 8

118 '

SEE NOTE 1

SAMPLE BOX andPARSHALL FLUMESEE FIGURE 7

Not to scale when p ri nted from PDF file.

78'

88'

98'

108'

NOTES:

1 . 32 L.F. INDUSTRIAL GRATINGCATWALK SUPPORTED BYTHREADED ANCHOR RODSUSED TO ANCHOR FILTERCELL OVERFLOW WEIRS

2. 6 L.F . GRATING BRIDGEBETWEEN TOP OFSPILLWAY CHANNEL ANDINDUSTRIAL CATWALK

3. ELEVATION ACROSSBOTTOM AT 78' LINEAND 98' LINE LEVELWITHIN 1" . AT 138' LINEBOTTOM IS 11" LOWE RON WEST SIDE COMPAREDTO EAST SIDE .

N\CONCRETE WALL OFMIXING ZONE

SCALE : 1 " = 10 'JOW MEASUREMENT WEIR

738,

OUTFALL 018 BMP UPGRADES - LAYOUT

9/11/06

2-8

FIGURE

PROJECT NO.AG.10.01

HDMSP00083069

POND

WEIR

HORIZONTALDISTANCEFRO MR-2, ft .

OW3

C1a

9

R- 2

I

I-

0

08182638

586878889810811812813 8

10 20

8L d \F/ a (at to scale when printed from a PDF file .

LE

E n vI r o28215 Agoura Rood, Suite 200, Agoura Hills, California 91301

30

VERTICALDISTANC EBELOWWEIR, ft .

2 .000 .000 .420 .752 .0 8

5 .507 .178 .679 .6711 .0012 .1713 .1714 .0814 .83

40 50 60 70 80 90 100

HORIZONTAL DISTANCE FROM R-2, ft .

HORIZONTAL SCALE : 1 in . = 10 ft .VERTICAL SCALE : 1 in . =5 ft .

OUTFALL 01 8 BMP UPGRADES - PROFILE

110 120

Conc rete Trench E N D 0 F

130

SPILLWA Y

142 ft .

1 1140 150

9/11/06

2-9

FIGUR E

PROJECT NO .

AG. 10 .01