uii uiiiuuuiu m ]III I u BNA03984231 HDMSp01683626 Metcalf & Eddy, Inc. Engineers & Planners

290 North D Sireel, Suite 401 San Bernar0ino, Cardornia 92401 (714) 888-772 1 J-125 2

March 11, 198 5

Hargis and Associate s 1735 E . Ft . Lowell , Suite S Tucson , Arizona 85719

Attention : Mr . Chuck Dicken s

Subject : Rocketdyne ECL Pond Closure ; Preliminary Concept Study

Gentlemen :

In fulfillment of Task 1 of our Scope of Work for the subject project, we are pleased to submit the enclosed report . This report presents our preliminary design concepts, cost estimate, and input to an implementation schedule to accomplish the pond closure, and collection and treatment of contaminated groundwater .

We appreciate this opportunity to be of service to Hargis and Associates and look forward to continuing into the final design and construction phases of this project . Please feel free to call if you have any questions .

Donald J . Schroeder Project Manage r

DJS/vh

Attachment

uiuuuuiuui uuu Ill u BNA03984232 HDMSp01683627 ROCKETDYNE ECL POND CLOSURE

DESIGN CONCEPT REPORT

INTRODUCTIO N

This report presents conceptual design concepts and criteria, an implementation plan, and a cost estimate for all construction necessary to accomplish closure rfd s~,te~cl~arrCup,~f,QF the X Engineering Chemistry Lab (ECL ) Pond on the property o f Rocketdyne Division , Rockwell International~in Ventura County, California . The design concepts are based on a sit assess ent , and overall closure 4? fl u oncepts developed by,A Hargis and X Associates . This design concept report serves as the basis for preparation of construction contract documents (drawings and specifications ) to accomplish the work .

.w The design recommendations contained herein are based on the following information :

1 . Site visits on February 15, and March 4, 1985 .

2 . Subsurface information developed by Hargis and Associates .

3 . Groundwater quality data provided by Hargis and Assocites .

4 . Preliminary site topography ~bf3tnlned by- ht fs) t ; and existing X aerial mapping .

1 .. .r~.~. . goo .

u uuu ]III u BNA03984233 HDMSp01683628 l I i,

.4-

1 C

ENGINEERING CHEMISTRY LAB BLDG 27 0

PROPOSED TREATMENT PLAN T ECL POND SITE'

DISCHARGE PIPE TO RESERVOI R

LINED DRAINAGE SWAL E \i

0 CUTOFF WALLIFRENCH DRAI N TR C

FIGURE 1- LOCATION PLAN CHELICAL :PRO CEE,5::AND STORAGE *RE h

EXISTIN G SUSPECT WATE R POND

SH-s,- / CONC . BWALE ✓

Tc b -c _ d D I 8C HARG E DRAIN EXTENSIO N Y u~ ~4 tea -

FRENCH DRAI N

DISCHARGE PIPE TO RESERVOIR catt~n ou A s'• VIA--,( W EL L

NEB`- ~~P` M) Pc TuDV

20, d ?ropvu co~lec,on w~1~ `SH-10 cl~ lb,

FIGURE 2 SITE PLAN

uii uiiiuuuiu m ]II u BNA03984235 HDMSp01683630 The project consists of four basic elements :

1 . Closure of the ECL Pond .

G~ 2 . Construction of a subsurface cutoff wall 1French drain ,__and to intercept contaminated groundwater .

3 . Construction of a groundwater treatment facility to remove

contaminants prior to discharge in an on -site reservoir .

4 . Miscellaneous site work such as diversion of surface runoff beyond the contaminated area and miscellaneous grading and piping .

The general location of the project site is shown on Figure 1 . Design concepts and criteria are discussed in the following section, followed by discussions of construction cost estimates and an implementation schedule .

DESIGN CONCEPTS AND CRITERI A

This section provides detailed concepts and design criteria for each of the following components :

1 . ECL Pond closur e

2 . Cutoff barrier and French drai n

3 . Groundwater treatment and discharge

4 . Miscellaneous requirement s

A preliminary site plan is shown in Figure 2 .

2

u uuii ]II u BNA03984236 HDMSpO168363 1 ECL Pond Closure

L %* C C o~ v D o ' The CLJL1.n9ECL pondfis approximately 10 feet deep and 1,400 square feet in surface area, and has been excavated essentially to underlying bedrock . The closure plan consists of the following steps :

1 . .Sra~fl _ t seepage cL SAS collc~~ ~~ +~e ~Cl_ Pow *-e c -v - r n'-4. i K ~ar pro~~~ 2 . Scrape and remove loose soil/weathered rock from pond sides

and bottom . '- So„ -°''-" aQ -' Lc_cs Z ~s .c :GL1-•

3 . Place 16-inch diameter well casing in down-gradient section of pond .

4 . BackfjL1Ywith approximately five feet of imported gravel .

• S . Backfill remainder of pond except for treatment plant footing with select native material and compact as specified . Backfill material may be taken from excavation from French drain or borrowed from designated borrow area such as the bank west of the French drain area .

6 . Construct asphaltic concrete paving over entire pond area, except in the area of the treatment plant .

7 . Install a submersible pump in the well casing, d'Tping to the surface . During construction of the cutoff wall and French drain this well will serve as a partial means of area dewatering to reduce seepage into th ~e ca ation area . , ~ ` -e .,Li.~£c~ritp-1ct2'oa ,, -rQ` • + - -sue ~~ , , , > > a s ~ae4 -tip-er-soppla menta1 we= SZ~t

3 .I(TG*L I • CDO V

u uuii ]II i uu u BNA03984237 HDMSp01683632 \

~ 2 p~ k 8 . During construction, provide/3 temporary 21,000 gallon Bake r tanks on-site . Temporary dewatering from this extraction well and the construction site would be diverted to the tanks for holding and treatment if necessary .

A typical cross-section of the closed pond is shown in Figure 3 . Design criteria are summarized in Table 1 .

TABLE 1 . DESIGN CRITERIA ECL Pond Closur e

Item Criteri a

Gravel Backfill

4te~t r a

S.ts u cce E-e-A-rea

Earth Backfil l Select native materia l

Compaction - Under Pavin g 908 Under Structure s 958 C.-0 tlccto Well S ~ " bubo '- Casing 16 inch diameter stee 1°N Y8 Screen 0 .100 inch Johnson SS e'er scree n Pump 15 gpm submersible '

Paving

Asphaltic Concret e 3 inc h

Temporary Holding Tanks

Numbe r Capacity, each 21,000 gallon

4 .. CYCALI • £00 V

u uuiiu]II u BNA03984238 HDMSp01683633 REINFORCED CONCRETE -i MAT FOUNDATIO N

EARTH BACKFtL L

BEDROCK

BEDROC K

WEATHERED BEDROCK

FIGURE 3 SECTION D- D ECL POND NT$

4 l IC -l I •! D D Cutoff Wall and French Drai n

The cutoff wall and French drain would extend across the mouth of the canyon and down to bedrock at the approximate location shown in Figure 2 . Longitudinal and transverse cross-sections ar e shown in Figures 4 through 6 . A description of the recommended construction follows :

1_ Begin dewatering of the area using the --i-'__t'__ n well ~~ ~xc~.vollon . installed in the EL Pon~dJ: Effectiveness of dewatering can be observed in the monitoring wells .

2 . Excavate the entire trench section for the cutoff wall and vnw~,l~~ r French drainllo`~bedrock Additional dewatering , as required , could be accomplished by a toe drain and pump in the trench, or, if necessary , installing a temporary pump in other existing monitoring wells . Collected drainage would be pumped to the temporary holding tanks or to the treatment plant if operational .

3 . Clean downstream key section of loose material and place concrete base in key .

4 . Fill and compact berm section across low point in drainage channel .

5 . Apply membrane liner to trench base and downstream trench face to height shown in sectiorX Anchor as shown .

6 . Place porous lateral drain and well casing/sump at low point of trench .

7 . Backfill trench to height shown with graded gravel and sand filter .

5 .a .c~~• • to o • u uuiiu u BNA03984240 HDMSp01683635 C

5 '

Ga I

e oC

uii u m uIn Ill u BNA03984241 HDMSp01683636 16" DIA . WELL CASIN G

CONCRETE FIL L

30 MIL REINFORCED CPELINER

100 MIL CONSTRUCTION FABRI C BOTH SIDE S

MIN .

".1&L ,O f s Q ,. o "y 9v f- FIGURE 4 SECTION A- A AT LOW POINT OF BEDROCK

u m uIR Ill u BNA03984242 HDMSp01683637 0

a POAOUA CONC11EtP DRAINAGE PIP E

' Ceh~ p~-Ll' at4ovt co I~` v~ Z L \ MSG

0- FIGURE 5 SECTION B- B AT LOW POINT OF DITCH t t c •! DD S w CONCRETE SWAL E

QXIETIMO GROUND LINE--~ I r -16" DIA . WELL CASIN G

VARIES TO 6' MAX .

VARIES TO tl'-tS" MAX .

$ POROUS CONCRETE DRAINAGE PIP E

FIGURE 6 SECTION C-C FRENCH DRAIN .IT( ." . too, B . Backfill remainder of excavation with select native material

from excavation or designated borrow area .

9 . Install submersible pump with level controls and discharge piping in well .

Design criteria for the cutoff wall and French drain are shown in Table 2 .

TABLE 2 . Design Criteria

Cutoff Wall and French Drai n

I tem j- Criteri a

Cutoff Wal l

Length 80 feet Maximum height 6 .5 feet Material 30 mil reinforced CPE with 100 mil fabric mat both sides

French Drai n

Length 80 feet Maximum height- 6 .5 feet Backfil l 1/8 - 1/4 inch rounded grave l Collection pipe 9 inch por-a~ z7te o Ll Q"L /`p' scr., Mr Fr Backfill Compactio n

General trench 80% Berm sectio n 90 %

Extraction Wel l

Casing 16 inch stee l Screen 0 .100 SS Johnson well screen

6

uiuuuuuiui N1~IIEOlE BNA03984245 HDMSpO1683640 d Discharg e Groundwate r Treatment an pumped to a treatment plant located

pond . cted

0 s n lev e nd-~in mos .wells t belowA , the effluent would flow F0 1 1 owing treatment detectCjoa!l i~• : Reservoir . from the plant to nearb y by gravity mmended to provide a buffer to the reservoir is reco Discharge . plant upset conditions against abnormal range from an average of groundwater flow Estimates of expected 10 gpm to a maximum of 50 gpm •

associated Due to the diverse nature of the havembeensdivided into the treatment unit operations w~4~. roundwater , oxidationn removal, r,014-M-7t oxidatio types : air stripping for VOC . 4 . with hydrogen peroxide tic is given in Figur e A system and flow schema

tm ent as the not uirereq wt lea Th me alconce"~t~ionswill stand rds f~ they 71 e d i king a er, than h aaes~ n t m~ons ar less an9 sc4 1-/ A onceRtra~ion run-aL~d m hiw L co' a r the treatment process and will form Mv during asking may be . &Wilt b p . Acid washing of the non-harmful precipitate c . -~~ y built-up pre infrequently to remove an required ipitate

in Air strippers work on the kinetic theory of Air Stri that molecules Of -- of gases states . The kinetic theory gases between the gas and liquid readily move dissovled gases can

. eco . 7 ..,TC• ✓

uii u N I u BNA03984246 HDMSp0168364 1 phases . When water contains a volatile organic in excess of its equilibrium level, the contaminant will move from the liquid phase (water) to a as phase (air) until equilibrium is . If the air in contact with the water is continuously reached eventually all the replenished with fresh contaminant - free air , . The dynamics of contaminant will be removed from the solution this mass transfer process are characterized by the use of the concept of the transfer unit . The height of a transfer unit (HTU) is the depth of packing (H) required to achieve a unit (NTU) is related to the separation . The number of transfer units packing depth as shown in Equation One .

e H = (NTU ) (HTU) Equation On

The NTU for a contaminant can be calculated using Equation Two .

in 1(1-A) + A ) f Equation Tw o NTU ( Cxlnxout 1 / (1-A)

where x = concentration (ppb) of contaminant in water .

e A = (L/G) (1/H) Equation Thre

G = the ratio of molar liquid rate over molar gas Where : L / rate . g = Henry's constant for contaminant (atm) .

A = Stripping factor .

The ETU can be calculated using Equation Four .

B

.9TCALF • tO O

uiuuuuiuui N IIIOlE BNA03984247 H D M S p01683642 HTU = L Equation Four KLXi n

where L = superficial molar water flow rat e

KL = 1 Equation Five 1 + Xi n kL kU H

kL = local liquid mass transfer coefficient kG = local gas mass transfer coefficien t

All of the previous equations and constants from scientific literature have been incorporated into a computer model . The stripping tower diameter type of packing, air to water ratio, liquid loading rate, gas loading rate, packing depth, and others were selected based on experience and/or trial runs of the computer model .

Trial runs quickly pointed to an arrangement of two air stripping towers in series as a single tower would be excessively tall . The design criteria for the conceptual air stripping towers are shown in Table 3, and the expected performance of the two tower system is listed in Table 4 . Ahefffyent vot,i o n doncentrations areeduced to less than actiop levels . F~ tle ",expected Overage" influent concentrations, the design s sufficiently conservative . / Even if the actual influen i / i 1 1 concentrations appr ach the "maximum" values host volatile 11 constituents can be r\ duced to be ow action levels . axi-mum concenntrati d max mum6l'groundw~ter flow rate 5O~g pm); --a -1-o-0, residual level of---1,2 DC8 might st`ili be expected .

9

..ctc .v . .oo .

uiuuuuiuui N I B IDu DIE BNA03984248 HDMSpO1683643 A TABLE 3 . AIR STRIPPING TOWER DESIGN CRITERI

Criteria Item

SO Water flow rate, gpm 15 .9 Hydraulic loading, gpm/sq ft 2 .0 Tower diameter, ft 1,000 Air flow rate, cfm 150 Air :water volume ratio 20 .0 Packed height, ft 1 in . polyethylene Packing type Tri-Pac k 62 . 8 Packing volume, cu ft

10 r. .*ca . . .o "

uiuuuuuiui M I R IDu DIE BNA03984249 H D M S p01683644 . CONCEPTUAL AIR STRIPPI TABLE 4 TOWER PERFO C E All Values in

Efflue nt Tower 2 Influen t Tower 1 Compound Name

PN <0 .0 1 6 0 .0009 Benzene V <0 .0 1 / 3,260 0 .317 Carbon Tetrachloride 4 <0 .0 1 / 13,80 0 2 .2 Chloroform <0 .0 1 215 0 .027 1,1 Dichloroethane 0 .04 26,900 39 .8 Dichloroethane <0 .0 1 1.12., 265 0 .015 1,1 Dichloroethylene <0 .0 1 646 4 5 0 .107 Trans 1,2 Dichloroethylene 5 .53 <0 .0 1 35,6 4 5 Methylene Chloride <0 .01 US 0 .017 Tetrachloroethylene <0 .0 1 1,220 0 .267 1,1,1 Trichloroethane <0 .0 1 70700 0 0 .078 Trichloroethylene <0 .0 1 0 0 .027 <0 .01 Toluene 165 0 .0031 3 2 .62 V iny] Lhlor ide 2 .8 2-Nitrophenol 30 29 .9 29 . 8 phenol 16 . 7 20 18 .3 Nitrobenzene 49 . 2 83,300 99 .4 Totals (VOC = 0 .04 )

11

uii u M IIEf u BNA03984250 HDMSp01683645 TABLE 4 . Continue d

Effluent Tower 1 Tower 2 Compound Name Influent

Groundwater Concentration R ange : Maximum

0 .00397 <0 .01 Benzen e 25 1 .14 <0 .0 1 Carbon Tetrachloride 14,500 7 .24 <0 .0 1 Chloroform 44,700 0 .0617 <0 .0 1 1,1 Dichloroethane 490 85,000 126 .0 0 .186 1 . 2), Dichloroethane ) 0 .0368 <0 .0 1 1,1 Dichloroethylene 650 0 .315 <0 .0 1 Trans 1 , 2 Dichloroethylene 1,900 26 .9 <0 .0 1 Methylene Chloride 174,000 315 0 .0479 <0 .0 1 Tetrachloroethylene 0 .836 <0 .0 1 1,1,1 Trichloroethane 3,800 0 .285 <0 .0 1 Tr ichloroethylene 2,550 650 0 .161 <0 .0 1 Toluen e 600 0 .0113 <0 .0 1 Viny~hlor ide 15 14 .0 13 . 2 2-Nitrophenol 180 180 .0 180_ 0 Pheno l 110 .0 100 . 0 Nitrobenzene 120

' 29 3 329 , 50 0 467 Total (VOC = 0 .186 )

12

uii u H III Ill u BNA03984251 HDMSpO1683646 One concern that must be addressed is the quantity of photo-

chemically active organics discharged to the atmosphere by an y air stripping facility . I t e art y-~i5 ess an 4 ou n Pei da , ~ .~mi~~ ; nn ~[ftf0l tsar-ham

da-y,of volatile dl ~ At th "e expected averag e " concentrations and average flow rate the air emission quantity of VOC is 10 pounds per day . Ti~e'mas ~uant~t~pr da~limis " RIl uu e t S, DT7

The major volatile organic compounds (for the "expected average" concentrations) are :

Methylene chloride 35 .80 ppm 1,2-dichloroethane 26 .90 ppm Chloroform 13 .80 ppm Carbon Tetrachloride 3 .26 ppm 1,1,1-trichloroethane 1 .22 ppm 80 .98 ppm or 97 . 2 wt . % of the total VOC

None of the above compounds are photochemically reactive a s defined in 40 CFR 52 .254(k) , but are considered to be I reactive cnemlcals, [P Lon'troi n i r6gu atlions anm e m t ;a 1' ati rm have be de ed n fu r her ~inve tigatio of pt~""'s`' Cyl r~ u i d ur ing i i1sign . ~ ;

13

uii u R III u u BNA03984252 HDMSp01683647 and ph xidati on . phenol , nitrobenzene} are (nitrophenols , base- neutral compounds tm r not removed by air stripping . It is r ecommended

that hydrogen peroxide be used to oxidize these compounds to . Hydrogen volatile organic acids which are readily biodegradable peroxide oxidation occurs readily at neutral pH and is catalyzed This combination of peroxide and ferrous ions by ferrous ions . is called Fentons reagent and is widely used for destroying . Bench scale treatability tests would be required to phenols determine :

Hydrogen peroxide dosage

• Contact time

• If existing ferrous ion concentration is enough

• pH effec t

it is proposed to use the air stripping tower sump tanks as the reaction vessels to minimize the overall process capital costs The conceptual design is based on this premise . and complexity e with the sump tanks sized for a nominal 20 minut . reaction /retention time

T _ c~pound is--&--"n wn__. N-Nitrosodimeth lamine, NDMA . 4 . One risk assessment' or ND't, cait~inogen an health hazafd .7 parts pe r g water , t/1 10~ cance~zis for drinkin placed the , such as solubi ities, He Y /sical~consbants Ilion' . phY ! obtain eve n after extensive constant, etc , mare difficult to to a s ~p• . NDMA -~s not expected lit r ature searhes

:DS"~R }p tic kr e ~ .r/'}~ ~o-•w.Coi"c.Nc...~~~ C.-~Jc~~ c., ~C q ,Sa' k F 1 {ltie 1u 1* i~ Gr/~ v 0 S~2C ~~( ,~~ . T(_ F rc v2 e',\u~11 t`` y~.~ Stt-tk t~

rcc~ ~^^ 14 N• c

uiuuuuiuui N II OlE BNA03984253 HDMSpO1683648 erience have /identifie d Pr e li nar y literature su rveys y photolysis as' the most pro m X, chemical bonds of the NDMA ultraviolet) is wed to break the commercially available treatment / molecule . No specific reduction', technology is known to exist . Chlorinolysis, s ave adsorption, evaporatio n from watej.'and other technique NDMA concentration s low little or no effect on decreasing 1 ppm .

f U travioletnlight based--photolysis with the option o peroxide injection to cause photo-activated oxidation recommended conceptual design treatment Bench scalef I/ofn a treatability tests wilt be regired prior to final selectio : photoreactogV photoreactor . For prelim y cost estimate1,g, -a k-I . with approximately 15 min . irrad'ation,_time is assumed

. The treatment plant will consist Miscellaneous Considerations of the equipment described above and shown in Figure 7, along with all necessary piping, valving, controls, and electrical . All components will be designed for outdoo r distribution system concrete ma t foundation . The basi c service and installed on a control philosophy will be as follows :

i Maintain flow though towers at 50 gpm when influent flow 1 . . less than 50 gpm by use of recycle pump from Number 2 sump

2 . Maintain both sumps 70% full .

Maintain constant H202 to influent flow ratio for any 3 . influent flow rate .

15

uii u R II u BNA03984254 HDMSpO1683649 Mo. .1 No. 2 1 Alft AIR $tRlPPE ~YA1PPEO

BLOWER SLOWE R

DISCHARG E FROM EXTRACTION sump, U W LL(8) SUMP, TO RESERVOI R T- I

RECYCLE PUM P

FIGURE 7

TREATMENT PLANT SCHEMATIC .. . , c . . • (o o . 4 . Provide automatic shutdown on :

• Loss of influent flow • Sump overflow

Less/of' flow , t roug Wes'act~er f

Well pumps will be interlocked with treatment plant operation .

Other Requirement s

Other requirements include surface drainage , general site grading and piping , construction health and safety considerations, and use of spoil material .

Surface Drainage - The ECL Pond and French drain areas are located in the drainage path of all surface drainage from the ECL complex area and a surrounding subbasin draining approximately 20 acres . Runoff is currently handled in three ways as shown in Figure 2 : low-flow " nuisance " runoff from the pad adjacent to the ECL building is piped to the lined suspect water pond ; runoff from all of the paved areas and most of the ECL building area is channeled to a concrete - lined swale which discharges to the drainage ditch below the suspect water pond ; and, upstream drainage is channeled to an 18-inch culvert which crosses the parking area and discharges to the ditch below the ECL Pond .

Nuisance drainage from the ECL pond area would continue to be routed to the suspect water pond . This would insure that any spills or small "first flush" flows can be contained . The valved drain from the suspect water pond would be extended to tie into the underdrain/ex traction well system so that treatment may be provided, if desired, for the contents of the pond .

42

16

uii u HuIIM u BNA03984256 HDMSp01683651 All other surface drainage would be routed downstream over the top of the cutoff wall . This would be accomplished by filling in the existing ditch as necessary from the end of the two existing

discharge points to raise the ditch invert, then constructing a concrete drainage swale as shown to join the two flows and carry surface flow past the cutoff wall . Transition grading and erosion protection would be provided at the end of the lined section- By this method, essentially all surface runoff with the exception of "nuisance" runoff from the ECL Pond area would be

routed beyond the contaminated area and not percolate into the area or contribute to the flow which must be handled by th e treatment plant . The surface drainage concepts are shown on Sew..., Figure 2, and to a limited extent on Figure 5 . 17, -j5 V, Coo JA General Site Work . The area in the vicinity of the constructionly skr

Contaminated and treated water would be conveyed in CPVC or polypropelene piping . Piping I would generally run above ground except where vehicular access is required .

Construction Health and Safety Considerations . A plan for protection of the health and safety of the construction crews, particularly during below ground activities, such as construction of the French drain and liner, will be required . Protective clothing such as rubber boots, gloves, and possibly coveralls, will be desirable to minimize contact with contaminate d seepage . Respirators with organic vapor cartridges should be available . A photo ionization detector for total hydrocarbons should be used to detect critical levels of hydrocarbon vapors, and thus the possible need for use of the respirators .

17

uii uiiiuuuiu N II I u BNA03984257 HDMSpO1683652 T

CONSTRUCTION COST ESTIMAT E

A construction cost estimate has been prepared for all facilities described in this report . The project cost estimate is summarized in Table 5 . Costs are based on the preliminary concepts proposed and approximate quantities based on the level of detail presented . Costs are based on March 1985 prices to th e maximum extent possible . Due o the significant uncertainty at this point e)ative to design criteripd equipment requirements ;foX the UV reacto~ system,\the UV system cost is shown ¶eparately/ Because of the ma or poten .sal i cost of the system, further preliminary design work an bench o~ pilot scale treatabilityj testing ,% is definitel y Alternatively, other appr \ ches,; may be more a propria a to conside r such as isolation and separa_te/treatmen o auling of water f~om I /~ lrcy~ ca~~ cs~~c.3,cs ~Lo v~~- - ¢~ coi o~- J p .- P FYV . ;~p~ scope 4rlIeo~c.~ ;1 :~~ k1~ s o G~rae .-~e~wti.~t TABLE 5 . PROJECT CONSTRUCTION COST ESTIMAT E

Item Construction Cost, $

ECL Pond Closur e 5,500 Cutoff Wall and French Drain 6,500 Well and Pump s y'°`f ?- 8,500 Treatment Plant 75,000 Site Pipin g 11,00 0 Site Grading , Drainage, and Miscellaneous 7,500 Subtotal , Construction Costs 114,000 Contingency @ 15% 17,000 Total Construction Cost 131,100 Baker Tank Rental ( 1 month ) 2 kr. 2,500 Engineerin g Treatability Testing and Analyses 13,000 Final Design ~~ccyde ~ .

U1i System,, Installed`.Cort

18 4(1C A L 0 • RD D "

uii uiiiuuuiu H IIIIDu u BNA03984258 HDMSp01683653 SCHEDUL E

We have developed a preliminary implementation schedule based on

proceeding in a relatively conventional approach, i .e ., final design and preparation of contract documents, bidding the work as one package, and construction . Under this approach, the tentative schedule and sequence of events would be as follows, following authorization for design : Elapsed Duration, Tim e Item Weeks Week s

Final Design~{ Po1S~y • 6 6 Bidding and Contract Award 4 10 Mobilize, fill ECL Pond an d construct plant foundation 2 12 Construct treatment plant 10 20 Construct French drain and cutoff wall 2 20 Complete site work, demobilize 2 2 2

The first activity would be the closure of the ECL Pond and construction of the foundation for the treatment plant . Equipmen t and materials for the plant would be ordered as soon as possible . ro~ Equipment procurement and construction of the treatment plant will be the critical path item . Construction of the French drain and cutoff wall would not begin until just before the treatment plant was completed so that completion of the French Drain would coincide with completion of the plant .

Several options are available to potentially reduce the total implementation time . Long lead equipment could be identified early and procurred independently by Rocketdyne and installed by the contractor . The remainder of the treatment plant design could then procede . The ECL Pond closure and plant foundation could also be prepared as a separate bid package . The design and bidding time for this package coul~ be considerably reduced . Design of the Frenc h

19

uii u N uIII iii u BNA03984259 HDMSpO1683654 Acrylonitrile . Propenenitrile; vinyl cyanide; cyano- ethylene ; Fumigrain ; Ventoa. CH2 HCN ; moL wt- 53.06. C,H, N; Co 67.90 %, H 5 .70 %, Nd 26 .40% . Prepd . by dehydratnio of ethylene cyauoLydria : German pat . 496,372 ( 1930 ) ; from acetylene and hydrocyanic acid by liquid phase or vapor phase catalysis: German pat . 730,727 (1942 ) ; U.S. pat . 2,370,849 ( 1945) . Also prepd . Acrolein. r-Propenot; acrylic aldehyde ; acrylaldehyde ; from laetonitriie or from allylamine: Stehman , U.S . pat. acraldehyde . Cllz HCHO; soul. wt . 66.06. C,H.0 ; 2,688,034 (1954 to Monsanto) . C 64 .27% . H 7.19%, 0 28.64% . Prepd . industrially by passing glycerol vapors over magnesium sulfate heated Fl °mma ble li quid . Poisonous , handk in hood. djo 0.8060; d(0-30 °) to 330-340 ° . Lab_ preps, by beating a mixture of 0 .8281 - 0.001106t_ in . -82° . b, .1 78 .5° ; bloc 58.3° anhydrous glycerol, acid potassium sulfate and potas- ; b2oo 38. 7° ; bus 22 .8° ; bs, 11.8° ; boo +3 .8°; b,o -9.0° - 3° sium sulfate in the presence of a amall amount of hy- ; b,o -20 ; b, -30 .7°; b, ., -61 .0° ; nD 1 .3884 . Flash point 32°F droquinone and distilling in the dark: Adkins, Hartung, . Explosive mixtures with air: 3 .05 % Org. Syn. 6, 1 (1926) . Formation from glycerol by the lower limit; 17.0% upper limit . At 25' action of B. amaracrylus 7 .4 parts dissolve in 100 parts water and 3 . 4 parts water : Voiaenet , Compt. read. 188, 941, 1271 (1929) ; dissolve in 100 parts acrylonitrile . Miscible with the by B. weihii : Humphreys, J. infect. usual organic solvents. Polymerizes in the presen Diseases 35, 282, Chem . Zentr. 1925, II, 309. ce of peroxides. LDsa ora lly in rats: 93 mg./kg. Flammable li quid . Pungent odor . Irritates eyes and Use mucosa. Unstable , polymerizes (especiall : In the manufacture of synthetic rubber . where y under li ght) it is usually co-polymerized with butadiene forming diaacryl , a plastic solid . d° 0.8621; d10 0 .8506; . In the manufacture of plastics . In organic synthesis to intro- d" 0.8447 ; dt00.8389 ; d'00.8269; d400 .8179 ; df00.8075. m. -88° . b7to 52.5° duce a cyanoethyl group . Pesticide fumigant for stored ; bloc 34 .5°; b=oo 17 .5°; bloc +2.5°; grain . b,o -7 .5 ° ; boo -16.0 ° No -26 . 3° ; b,e -36 .7' ; b, Human Toxicity : Weakness, -46.0°;b15 -64.5° . nb 1 .4022. Absorption spectrum : li ght -headedness, head. Luthy, Z. Physik . Chem . 107, 291, 298 (1923) . ache, nausea, sneezing, abdominal pain, vomiting , loss of Soluble consciousness, in 2 to 3 part s water; in alcohol, ether . LDro 30 mg./kg. ce ssation of respiration (asphyxia) and s .c. in mice . death . Max. allowable conch. 20 p.p.m .

Semicarbazone, C4H7N,O, needles from water, m . 171'.

Use ; Maloof. colloidal forms of metals; making plastics, perfumes; warning agent in methyl chlo ri refri de gerant. Has been used in military poison gas mix. ture s. Used in organic syntheses. Human Toxicity : Strong irritation of skin and ex- posed mucoaae . Habitual exposure seems to lead to some tolerance . No other chronic ill effects have been reported .

4! Acrylonitrile . Propenenitrile ; vinyl cyanide ; cyano- ethylene; Fumigrain ; Ventox. CH5 CHCN ; moL wt. 63 .06 . C,II,N ; C 67.90%, H 5.7n%, N 26 .40% . Prcpd. by dehydration of ethylene cyanohydrin: German pat. 496,372 (1930) ; fro m acetylene and hydrocyanic acid by liquid phase or vapor phase catalysis: German pat. 730,727 Acrolein. 2-Propena 1; acrylic aldehyde (1942) ; U.S. pat . 2,370,849 (1945) . Also prepd . ; ac ylaldehydo; from lactonitrile or from allylamine acraldehyde. CH : CHCHO ; moL wt . 66.06 : Stehman , U.S. pat . . C,H4O; 21688 ,034 (1964 to Monsanto) . C 64.27 %, H 7 .19 %, O 28.54%. Prepd . industrially by passing glycerol vapors over magnesium sulfate heated Flammable li quid. Poisonous, handle in hood 0 . 4° to 330-340°. Lab. prepn. by beating a mixture of .8060; d(0-3 0°) 0.8281 - 0.0011061. m . -82°. b7oo anhydrous glycerol, acid potassium sulfate and potas- 78.5° ; boss 68 . 3° ; brso 38,7° ; b,o, 22.8° ; b .o 11.8° ; h., .8° sium sulfate in the presence of a small amount of by. +3 ; brs - 9.0° ; b,o -20.3° ; b, -30.7°; b,,, -51 .0° ; droquinone and distilling in the dark : Adkins, Hartung, nDP 1 .3884 . Flash point 32°F. Explosive mixtures with Org. Syn air: 3. 05% lower limit . 6. 1 (1926) . Formation from glycero l by the ; 17.0% upper limit . At 25- 7 action of B. amaroerylus: Voiaenet, Comps. .4 parts dissolve in 100 parts water and 3 .4 parts water 941, 1271 ( rend 188, 1929) ; by B. welehil : Humphreys, J. infect. dissolve in 100 parts acrylonitrile . Miscible with the Diseases 35 . 282, Chem . Zentr. 1925, 11, 309. usual organic solvents. Polymerizes in the presence of pe xides ro . LD,° orally in rate: 93 mg./kg . Flammable liquid . Pungent odor. Irritates eyes and mucosa. Unstable, polymerizes ( Use ; In the manufacture of synthetic rubber, where especially under light) it is usua ll forming disacryl , a plastic solid. d° 0 .8621 y copolymerized with butadiene. In the d" 0 ; d10 0.8506; manufacture of plastics. .8447 ; 41210.8389 ; df0 0.8269 ; d4 0 0.8179 ; d60 0 .8075. In organic synthesis to intro- en. -88°. b7so 52 . 5° ; b duce a cyanoethyl group . Pesticide fumigant for stored .oo 34 .5° ; b00017.5'; b, ., +2.6° ; grain. boo -7 .5°; b .s - 15.0°• bas -26 .3°; his -38.7' ; b, -46 .0° ; n16 Human Toxicity b1. s - 64 .5 °. 1.4022. Absorption spectrum : : Weakness , light-headedness, head- Luthy, Z . Phyeik . Chem , 107, 291 , 298 (1923) ache, nausea, sneezing, abdominal pain, vomiting , loss of . Soluble consciousness in 2 to 3 parts water; in alcohol , ether . LDso 30 mg./kg. , cessation of respiration (asphyxia) and s .o_ in mice. death . Max. allowable conch. 20 p.p .m. Semicarbazone , C,H,N,O, needles from water, M. 171°.

Use : Manuf. colloidal forms of metal; making Plastics, perfumes ; warning agent in methyl chloride refri gerant . Has been used in military poison gas mix- turea_ Used in organic syntheses Human Toxicity : Strong irritation of skin and ex- Posed mucosae. Habitual exposure seems to lead to some tolerance. No other chronic ill e ff reported. ects have been

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