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FINAL

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. INITIAL REVIEW ENGINEERING REPORT PMN: 00-7 ENGINEER: Jon/TMB PV (kg/yr) : SUBMITTER: Kelco Biopolymers, unit of Monsanto B USE :

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OTHER USES: None listed MSDS : Yes Label : Yes General Eqp.: protective gloves/avoid eye contact/natural or mechanical.venti1ation to control exposure levels below airborne exposure limits. The use of mechanical ventilation is preferred at sources of air contamination. Respirator: use NIOSH approved respiratory protection equipment when airbogne exposure limits are exceeded Health Effects 1 combustible dust/fore-ignbody irritant/prolonged'contact may cause drying or chapping 

### of the skin/excessive inhalation of dust may be annoying and can mechanically impede respiration TLV/PEL (PMN or raw mat6rials): OSHA PEL 15 mg/m3 (total dust), 5 mg/m3 (regjp. dust) ACGIH TLV 10 mg/m3 (inhalable), 3 mg/m3 (respirable) CRSS :Chemical Category: D-Glucuronic acid, polymer with 6-deoxy-L-mannose and D-glucose, acetate, calcium magnesium potassium sodium salt VP: <1E-06 torr @25"C S-H,O: 40 g/L MW : 5,000,000 0%<500 0%<1000 Phys State: Neat: solid Mfg: solid Proc/Form: 2% of PMN substance in water. End Use: NA Consumer Use: No 

# E ANlTlZED 

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# I II Ill Il1 Ill 

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INITIAL REVIEW ENGINEERING REPORT Page # 2 PMN: 00-7 SAT (concerns) : Ground Water: negligible Health: 1-2 inhalation of respirable particles. XB: Testing desired. Eco : 1 no releases to water, XB: NO testing. OCCUPATIONAL EXPOSURE RATING: 2 ASSUMPTIONS: Past cases were not found.by this submitter. Their parent company (Monsanto) did not have any sim’ilar use past cases. POLLUTION PREVENTION CONSIDERATIONS: None listed EXPOSURE-BASED REVIEW
. Yes (2 criteria met) 1) # 

### of Ftorkers exposed: 754 

### No 2) >lo0 workers with >10 mg/day inhalation exposure : 

### No 3) (a) >lo0 workers w/l-10 mg/day inh. exp. & >lo0 days/yr: Yes (b) Routine Dermal Cont: >250 workers & >lo0 days/yr: Yes



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INITIAL REVIEW ENGINEERING REPORT Page # 3 PMN: 00-7 MFG :

++ Site/Location: 1

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### - f__- Days/yr: 350-

Process Description: Bacterial culture added to sterile environment with media (PMN formed) 

### -> fermentation is complete when nutrients are depleted 

### -> pasteurized 

### -> precipitated with isopropyl alcohol 

### -> rotary drum dryer 

### -> milled to powder 

### -> packaged in 50 lb product bags or fiber drums ENVIRONMENTAL RELEASES (Eqpt. cleaning, container residue, etc. ) : WATER : not needed kg/site-day over Days/year AIR: 1.3 kg/site-day over 350 Days/year from: 4 -basis: ' I . .

I

NC 

### I NEWT ION : none expected

.. /
c < LANDFILL: not required, per SATPage # 4 INITIAL REVIEW ENGINEERING REPORT PMN: 00-7 ! MFG: (cont)
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~ OCCUPATIONAL EXPOSURE Tot. # of workers: 286 (submission) Days/yr : 250 (submission and CEB estimate)' Inhalation: particulate 150 mg/day over 250 Days/yr 50 mg/day over 250 Days/yr Number 

### of workers with inhalation exposure: Basis : .(total dust) (respirable) 48

contact with solids: 6500 

### - 18,200 mg/day Dermal : concentration Basis : CEB estimate for two hand routine immersion

4INITIAL REVIEW ENGINEERING REPORT Page # 5 PMN: 00-7 PROC/USE #1:

_ _ Site/Location: 5 sites' d
Days/yr: 250 (submission) Process Description: PMN added to mixer with water 

### -> drilling rig 

### -> used as drilling fluid ENVIRONMENTAL RELEASES (Eqpt. cleaning, container residue, etc.): WATER : not needed kg/site-day over Days/year AIR: <1 kg/site-day over 250 Days/year from: basis: '.

% INCINERATION: none expected ;
LANDFILL : not required, per SAT "I

INITIAL REVIEW ENGINEERING REPORT Page # 6 PMN: 00-7 PROC/USE #1: (cont) OCCUPATIONAL EXPOSURE 4 Tot. # 

### of workers: 24 (submission estimates 4 per site, 6 sites) Days/yr : 250 Inhalation: particulate 150 mg/day over 250 Days/yr .(total dust) 50 mg/day over 250 Days/yr (respirable) Number of workers with inhalation exposure: 12 Basis:

.. ., . ­ ..... .... ... .. .... ........... - ... -
Dermal : contact with solids: 6500 

### - 18,200 mg/day concentration Basis : CEB estimate for two hand routine immersion
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INITIAL REVIEW ENGINEERING REPORT Page # 7 PMN: 00-7 PROC/USE #2: Site/Location: 18 sites x
Days/yr: 250 (submission) Process Description: PMN added to mixer with water 

### -> drilling rig -> used as spacer fluid ENVIRONMENTAL RELEASES (Eqpt. cleaning, container residue, etc. ) : WATER : not needed kg/siteTday over Days/year AIR: negligible (<42 kg/site-yr) from: basis : INCINERATION : none expected . ­ " ,: LANDFILL: not required, per SAT-- INITIAL REVIEW ENGINEERING REPORT Page # 8 PMN: 00-7 PROC/USE #2: (cont) OCCUPATIONAL EXPOSURE 4 Tot. # of workers: 72 (submission estimates 4 per site, 18 sites) Days/yr: 250 Inhalation: particulate 5.8 mg/day over 250 Days/yr (worst case) 1.7 mg/day over 250 Days/yr (typical) Number of workers with inhalation exposure: 36

- Basis:

Dermal : contact with solids: 1300 

# - 3900 mg/day concentration Basis : CEB estimate for two hand incidental contact

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INITIAL REVIEW ENGINEERING REPORT Page # 9 PMN: 00-7 PROC/USE #3:

# Site/Location: 50 sites
Days/yr: 250 (submission) Process Description: PMN added to mixer with cement and water 

### .-> pumped into the bottom of the drill shaft ENVIRONMENTAL RELEASES (Eqpt. cleaning, container residue, etc. ) : WATER: not needed AIR: negligible (< 4 2 kg/ site-yr )

. . from: basis: 0 INCINERATION: none expected
LANDFILL: not required, per SAT
OCCUPATIONAL EXPOSURE Tot. # 

### of workers: 150 (submission estimates 2qper site, used CEB estimate of 3 per site, 50 sites) Days/yr: 250 Inhalation: particulate 2.1 mg/day over 250 Days/yr (worst case) 0.6 mg/day over 250 Days/yr (typical) Number 

### of workers with inhalation exposure: 150 Basis:

Dermal : contact with solids: 1300 

## - 3900 mg/day concentration Basis: CEB estimate for two hand incidental contact

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INITIAL REVIEW ENGINEERING REPORT Page # 10 PMN: 00-7 PROC/USE #4:

Days/yr: 250 (submission) Process Description: PMN added to dry cement mixer with cement and water 

### -> packaging unit 

### -> end user 

### -> final cement structure ENVIRONMENTAL RELEASES (Eqpt. cleaning, container residue, etc. ) : WATER : not needed AIR: negligible (<42 kg/site-yr) from:

, basis: INCINERATION: none expected
LANDFILL: not required, per SAT -1 '
4 OCCUPATIONAL EXPOSURE Tot. # of workers : 210 (submission estimates 6 per site, 35, sites) Days/yr: 250 Inhalation: particulate 1.5 mg/day over 250 Days/yr (worst case) 0.4 mg/day over 250 Days/yr (typical) Number 

### of workers with inhalation exposure: 150 . ^ Basis:

Dermal : contact with solids: 1.3 

### - 3900 mg/day concentration Basis: CEB estimate for two hand incidental contact

. .. 

### - -.‘ 1 INITIAL REVIEW ENGINEERING REPORT Page # 11 PMN: 00-7 PROC/USE #5: Site/Location: 1 site 4
Days/yr: 105 Process Description: PMN added to slurry mixture i

. 

### -> transported to concrete plant 

### -> slurry added to cement 

### -> concrete truck 

### -> final cement structure ENVIRONMENTAL RELEASES ‘(Eqpt.cleaning, container residue, etc.): WATER : not needed AIR: 0.9 kg/site-day over 105 days/yr from: basis:

,. INCINERATION: none expected
LANDFILL : not required, per SAT i

*( OCCUPATIONAL EXPOSURE’ Tot. # of workers: 8 (submission estimates 8 per site) Days/yr: 105 

### . Inhalation: particulate ’ 150 mg/day over 105 Days/yr (total dust) 50 mg/day over 105 Days/yr (respirable) Number 

### of workers with inhalation exposure: 8 Basis :



### - ^ -
Dermal : contact with solids: 650 

## - 18,200 mg/day concentration Basis : CEB estimate for two hand routine immersionINITIAL REVIEW ENGINEERING REPORT Page # 12 PMN: 00-7 PROC/USE #6:

.. Site/Location: 1 site
Days/yr : 83 Process Description: d

PMN added to foam solution mixture 

### -> water and foam solution added 

### -> transportation by truck 

### -> foam generation equipment 

### -> spray on fire ENVIRONMENTAL RELEASES (Eqpt. cleaning, container residue, etc. ) : WATER: not needed AIR: 0.9 kg/site-day over 105 days/yr from: basis:

, INCINERATION: none expected >
LANDFILL: not

- required, per SAT

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# I INITIAL REVIEW ENGINEERING REPORT Page # 13 PMN: 00-7 I
I PROC/USE #6: (cont ) 

### OCCUPATIONAL EXPOSURE B Tot. # 

### of workers: 4 (submission estimates 4 per site) Days/yr: 83 Inhalation: particulate 150 mg/day over 83 Days/yr (total dust) 50 mg/day over 83 Days/yr ( respirable) Number 

### of workers with inhalation exposure: 4 Basis:

. . .. I .- . - :. -,.. . , - .. ...--I-.=-;- .: .."
. -, . .~.. ... .. . . . . . - . .. . .. ..

- Dermal : contact with solids: 6500 

## - 18,200 mg/day concentration Basis: CEB estimate for two hand routine immersion

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