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I5TBI#IIIC- CBBBSr*NBBNCB L*VltlAKA ilVttlCK January 30, 1953 | PLAINTIFF'S I EXHIBIT f EXX 118 Y He: Air Pollution Survey Dr. A. R. Choppin and Dr. FMUp V- 1feat Dr. . H. Hattox Petroleum FToducts Lab Dear Dr. Hattox: I am returning herewith original and live copies of a further revision of the proposed agreement with Dr. A. R. Choppin and Dr. Philip V. West. The figures submitted by Dr. Choppin have been incorporated in the contract, but it will be necessary for the dates to be inserted in the blank spaces when an agreement is reached as to the probable time of the starting of the work. You will note that under this arrangement we will be re quired to pay 17,400.00 in the first payment. Paragraph 1 has been revised so as to change the wording and the other paragraphs have been altered to conform to the under standing reached with Dr. Choppin and Dr. West at our last conference. Yours very truly. PAC:ca Enclosure Law Department ' if*>1 ''"Vf''"* EF003533 LOUISIANA STATE UNIVERSITY COLLEGE OF CHEMISTRY " PHYSICS - uNivrawrrr station ATOM ROUGE. LA. January 28, 1953 Esso Standard Oil Conpaxy P. 0. Box 551 Baton Rouge, La. Attention: Dr* E. H. Hattox, Petroleum Products Mr* M. B. Ands, Chea. Products Mr. P. N. Casey, Legal Department Gentlemen: Pursuant to our recent talks and negotiations, please consider this as our proposal for the air analysis project* Attached are copies of a letter from Louisiana Underwriters Agency corering insurance and a list of the materials, and equipment necessary to outfit the truck* Please note the following: First Year*8 Operation 1* Initial payment *7,000.00 This includes: Cost of the truck - -- -- -- -- -- $2,800*00 Capital outlay - ------------ ------------------- --- 3,175*26 Construction and glassware ------ 705*00 Insurance - - - ---------- --- bhi.00 Total for these items - - $7,121.26 2. Personal Services - -- -- -- -- -- -- -- -- -- 1;,800.00 Assistants - -- -- -- -- -- -- -- 3,000.00 West and Choppin - -- -- -- -- -- - 1,800.00 (This, sum to be paid in 12 monthly payments of $1(00.00 each.) 3* Total cost of first year's operation - -- -- -- -- - $11,800*00 Second Year's Operation The items to be considered are: 1* Personal services 2> Operating costs including insurance, maintenance, etc* 3* West and Choppin - 3,000*00 650*00 3,600*00 It* Total for second year's operation - $7,250*00 EM003534 January 28, 1953 - 2 We trust that this information will perarit you to reach a decision and to draw the necessary contractual forms* We will be quite happy to discuss any or all parts of this with you at your convenience. - Yours very truly. A. R* Choppin,vDaan College of Chemistry and Physics ARC:d Enclosures EM003535 LIST OF EQUIPMElflflRECESSARY FOR EQUIPPING A MOTORIZED LABORATORY FOR THE CHEMICAL AND PHYSICAL ANALYSIS OF THE J TOSPHERE. The unit will be completely self-contained. It will not require the services of any auxiliary laboratory facilities. The list contains only those items which are of prime importance, and no attempt is made to itemize the lesser items. The equipment is, therefore, essentially capital outlay items. Item Description Cost 1. Truck, Chevrolet $2,800. 00 2. Motor Generator, Onan 3Ck-lR 3,000 wat^ 115 v AC Single phase air-cooled 625.00 3. Model B. Beckman spectrophotometer line operated 750.00 4. Benzol indicator DM 11-7-92 225.00 5. Midget Impinger . 135.00 6. Direct vision dust counter Vernon Hill Co. 6829 75. 00 7. Welsh Vacuum Pump 1403 B 190.00 8. Carbon dioxide Tester 45.00 9. Hydrogen sulfide detector DY 14012 4o;oo 10. Pyrotannic detector CB4598 40. 00 11. Chloronated hydrocarbon detector 50. 00 12. Microscope - American Optical with accessories, S57100 305.00 13. Analytical Balance and weights Ainsworth LC 231.00 14. pH Meter, Beckman N-2 219.30 E KO 03536 15. Drytest Meter 16. Flo Rite Air Velocity Meter 17. Dust Counting cells C-T-32491 i 99.96 38.25 16. 00 18. Carbon Monoxide Tester BY 47133 45.00 19. Polyethylene Bottles Capital Outlay Total . 45.75 3, 175.26 The following equipment must be built into the truck: 1. Water tank 2. Air surge tank 25.00 30. 00 3. Sink 40. 00 4. Vacuum line 5. Titration Bench 6. Storage cabinets 10. 00 l 20.00 , 200.00 7,, Shock mounting for balance, spectrophotometer, and motor generator 50. 00 8. Lighting and ventilation 95.00 9. The remaining glassware and supplies to initially equip the truck with scrubbers, absorbers, filters, burets, pipets, titration stands, etc. , are estimated at Equipment for truck Total TOTAL 235.00 705.00 6,68 EM003537' V INTER-OFFICE COTnESPONRENCE LtVIlIANA IVIII*R A T tlf B Vfil, t A. January 23, 1953 JAM 2 6 1953 PETROLEUM PRODUCTS LAB. E. M- HATTOX Re: Air Pollution Survey Dr. A. R. Choppin and Dr. Philip W. West PIUK MB cCfL k l- s Dr. E. M. Hattox Petroleum Products Lab Dear Dr. Hattox: n>- < FEB 5 1853 PETROLEUM PRODUCTS LAB. E. M. HATTOX Attached hereto are original and five copies of the proposed agreement with Dr. A. R. Choppin and Dr. Philip V. West, which has been revised to conform to the agreement reached at our conference yesterday. Your particular attention is called to the elimination of the paragraph which provided for our Company to receive the benefit of a sale of the truck at the end of the contract. Para graph 13 permits the contract to be extended for an additional period of one year at our option. Unless priorities are involved for obtaining smite of the equipment needed in this work, I do not see the necessity of a letter of intent, since that letter should normally fix the contract price, which is the main feature needed to complete the attached agreement. If it is desired to advance these parties some money to permit the purchase of certain equipment we can, of course, handle that by a separate letter and rely upon the good faith of all parties to work out the ultimate cost. I will be glad to discuss this matter further with you. Yours very truly, PAC:ca Attachment Powell A. Casbj/ Law Department' EM003538 Procedures T4 V Dust Count (Impingement) . " . Collect 0.3 eu. ft. of air at the rate of 0.1 cu ft./min., using midget implnger containing 25 ml. of absolute methanol. Dust Count (Filter method). Collect 0.3 cu. ft. of air at the rat9 of 0.1 cu ft./min., using Whatman Wo. 50 filter paper in the filter apparatus. ~ Dust Identification. " Impinge a sample of air on a coated half-slide.(Shillaber*s 1.5150 Np immersion oil) until a spot visible to the naked eye is obtained. Add a small drop of additional oil and protect with a cover glass. Hydrogen Sulfide (Colorimetric). See instruction sheet. - Hydrogen Sulfide (Titrimetrie) ' Collect 3*53 cu. ft. of sample, drawing it through two dispersion bubblers in series containing 15 ml. of 5% cadmium chloride each. The rate of sampling should be approximately 0.18 cu. ft./min. Chlorine (Titrimetrie). Collect 3.53 eu. ft. of sample at a rate of approximately 0.13 cu. ft./min. by trapping the chlorine in 75 ml* of 30$ potassium iodide. Insert a filter of 6 inches of slightly dampened lead acetate paper ahead of the scrubber to remove any sulfides. Run a blank, purifying the air by bubbling it through 75 ml. of 0.01 N sodium hydroxide inserted ahead of the absorption bubbler. Chlorine (Colorimetric). Collect 1.0 cu. ft. of sample, drawing the air through a midget implnger at the rate of 0.1 cu. ft./min. The implnger should contain 9*0 ml. of 0.1 N sodium hydroxide. Sulfur Dioxide. Collect 3*53 eu. ft. of sample at a rate of approximately 0.18 cu. ft./min. The sample should be scrubbed through 25 ml. of 0.01 N iodine diluted to 50 ml. with distilled water. Run a blank, purifying the air by bubbling it through 75 ml. of 0.01 N sodium hydroxide inserted ahead of the absorption bubbler. Composite (Ammonium; chloride; sulfate) Collect 7.06 cu. ft. of sample at a rate of approximately 0.18 cu. ft./min., using a tall gas bubbler containing 50 ml. of triple distilled water. E NO 03 539 * Determination of Number of Dust Particles in Air (Filter Method^ Reagents 1. Methanol, absolute. 2. Filter Paper, Whatman No. 50, 5*5 cm. Apparatus 1. Filter Assembly, as described by Elkins, p. 256 2 Screen, 325 mesh. 3. Microscope, with Whipple disc. 4. Counting Cells, Sedgwick-Rafter. Procedure ' Sample 0.3 cu. ft. of air, drawing it through the appa ratus at the rate of 0.1 cu. ft. per minute for three minutes. Carefully remove the filter paper from the apparatus, and immerse it in 25 ml. of methanol in a 250 ml. beaker. Swirl the liquid until all the dust particles are removed from the paper. Filter the suspension through a 325 mesh screen, into a clean flask. . Agitate the contents of the flask so that a uniform sus pension is obtained. Remove two 1 ml. aliquots, using a 1 ml. pipet, and just fill two Sedgwick-Rafter counting cells. Allow the dust to settle for 30 minutes before taking "the -count. After 30 minutes, make a bright-field count, using the Whipple disc with the microscope so adjusted that the large square of the eyepiece covers 1 mm., i.e., encloses the dust in an area of 1 sq. mm. Examine several fields for uniformity and count one quarter of each of five fields in each'*cell. These ten counts are averaged and a blank count is subtracted. Calculations Dust Particles/m^ r Average net count/quarter x 11.8 x 10^ EM00354 0 m Determination of Number' of Duet Particles In Air TTmpingement Method! Reagents 1. Methanol, absolute. Apparatus . 1. M.S.A. Midget Implnger. Procedure Add 25 ml. of methanol to the sampling tube. Collect 0.3 cu. ft. of air at the rate of 0.1 cu. ft. per minute. Filter the suspension through a 325 mesh screen, into a clean flask. ' . . Agitate the contents of the flask so that a uniform sus pension is obtained. - 'Remove- tvo 1 ml. aliquots, using a 1 ml. pipet, and just fill tvo Sedgvick-Rafter counting cells. Allow the dust to settle for 30 minutes before taking the count. After 30 minutes, make a brlght-field count, using the Vhipple disc with the microscope so adjusted that the large square of the eyepiece covers l*mm., l.e., encloses the dust in an area of 1 sq. mm. Examine several fields for uniformity and count one quarter of each of fi-ve- fields In each cell. These ten counts are averaged and a blank count is subtracted. Calculations Dust Particles/m^ - Average net count/quarter x 11.8 x 10^ EM003541 m. Determination of'Dust Fall Apparatus 1. Sample collection assembly as described by Jacobs; p.- Ill 2. . Pyrex sintered glass crucibles. Procedure Assemble collection set and place In selected area. The collecting funnel should be as much in the open as possible so as to permit the collecting of all free falling dusts. The period of sampling can be varied between one and four weeks, depending on the anticipated rate of fall. The dust and rain, if any, should be collected over the desired sample period. At the end of the sampling any dust adhering to the funnel walls should be washed into the storage jar, using distilled water, and the sample transported to the laboratory. Final- analysis should be made by first removing extraneous material such as leaves, twigs, etc., which would not be classed as-dust. The sample should then be filtered through tared fritted glass cr-uclbles of medium porosity, dried at 110, and the crucible' and contents reweighed. The gain in weight represents the dust fall for the area sampled"(funnel top) and the period of collection. Calculations Report dust fall in terms of tons of dust per -square mile per month. EP003542 Molecular Identification of Dust Particles in Air Reagents 1. Shlllaber Immersion Oil (Nj, 1.5150). Grade B, high viscosity Apparatus 1. Petrographic Microscope. 2. Microscope Slides, (half-length). . 3. Midget Impinger. as described by Jacobs, p. 141. 4. Cover Glasses. , Procedure Coat the slides with a thin layer of Shillaber immersion oil (Nd 1.5150), Grade B, high viscosity. Collect a sample of dust on the slide (by direct impingement) until a dust area is visible to the naked eye. Immediately cover the sample with a drop of the immersion oil (ND 1.5150) and protect with a cover glass. Identify the particles by observing their optical prop erties, using for comparison both data from the literature 8nd prepared reference slides. The following table gives pertinent optical data on compounds most likely to be encoun tered. Table I Compound Classification Refractive Index Range Birefringence Hb2cd3 M a2^03H20 Na2S04 Si02 MaCl AI2O3 Biaxial Biaxial Biaxial Uniaxial pos Isotropic Uniaxial neg 1.546-1.415 1.524-1.420 1.484-1.471 1.544-1.553 1.544 1.768-1.760 0.131 0.104 0.013 0.009 0.000 0.008 Apply the Becke line technique for the estimation of refractive index. Examination of the dust particles in immer sion oil Nn 1.5150 will give information regarding identity of the crystals if the following facts are kept in mind: Only salt cake (Wa2S04) has both refractive Indices lower then `that of the medium. The birefringence of salt cake is of EM003543 .^pl 2 medium value compared to the high birefringence of sodium carbonate. Only sodium carbonate has one yefractjive index higher and one refrattive index lower than the, medium. a Both refractive indices of quart* are higherth*n that of the mounting medium, and its birefringence is. of the same order as that of salt cake. ' Alumina (AI2O3) has the same order of birefringence as quartz, but its refractive indices are so much higher- that it may be identified by its high degree of relief. The refractive index of sodium chloride is very close to the average refractive index of quartz, but it may be readily identified by its isotropic character. ; /t Calculations None EM003544 Determination of Hydrogen Sulfide In Air Aoperatug . 1. The 0. S. Bureau ol Mines Sulfide Detector; purchased from the Mines Safety Appliances Company. Procedure Break the tips of the silver cyanide detector tube and Insert the red end in the detector so that it will be nearest ' the aspirator bulb. Place the retaining head containing the inlet opening over the upper end of the detector tube. Press slightly against the retaining head to insure a snug fit of the tube in the rubber seat. Loosen the thumb nut on the back of the detector and adjust the sliding scale until the zero is directly opposite the beginning of the chemical granules; then tighten the thumb nut. . Collect an air sample (approximately 750 ml.) by squeezing the aspirator bulb ten times allowing it to expand completely each time. Calculations ' Read the concentration (ppm.) of'hydrogen sulfide on the scale midway between the longest and shortest ends of the gray discoloration of the detector tube. Determination-of Hydrogen Snlfide in Air Reagents . t 1. Cadmium Chloride Solution; 5% Dissolve 50 g. of cadmium chloride in approximately 800 ml. of distilled Water. Neu tralise to litmus,- and filter if necessary 1 i 2. Iodine Solution: 0.0100 N. Dissolve exactly 1.27 g. of iodine and 250 g. of potassium iodide in water. Dilute to one liter with distilled water. 1 3. Sodium Thiosulfate Solution; 0.0100 N. Dissolve 2.50 g. of sodium thiosulfate in distilled water and dilute to one liter. 4. Sulfuric Acid: 6 N. 5. Indicator. Dissolve 1 g. of starch in 25 ml. of hot water. Prepare daily. 0.1 per cent solution of amylose may be substituted for the starch solution and is stable for 2-3 months. Apparatus Dispersion Bubbler. Test tube (25 mm. x 150 mm.) with 5 mm. entrance and exit tubes. Procedure - Collect 100 liters of sample at the rate of 5 liters per minute, bubbling it through two dispersion bubblers, each contain ing 15 ml. of cadmium chloride solution. A yellow coloration or precipitate indicates the presence of hydrogen sulfide; After sampling has been completed, remove any sulfur dioxide that may have been trapped along with the hydrogen sulfide by aspirating ten .liters- of purified air through the bubbler. The air for purging can be purified by bubbling it through a scrubber con taining 75 ml. of 0.01 N sodium hydroxide. Transfer the precipitate and solutions from the absorption tubes to a glass-stoppered Erlenmeyer flask and add exactly 5 ml* of 0.01 N iodine solution, followed immediately by 2 ml. of sulfuric acid (6 N). Allow the solution to stand 10 minutes.. Titrate the excess iodine with sodium thiosulfate solution (0.01 N), adding indicator as the yellow color becomes faint. If a precipitate of cadmium sulfide (yellow precipitate) adheres to the glassware, it should be dissolved with acidified iodine solution prior to the sodium thiosulfate titration. EM003546 * Calculations Subtract the roluae of aodiirn thiosulfate used in the back- titration fro* the total rolume of iodine used. ppm. H2S (at 30OC and 760 **.) s *1. 12 (net) x 1.24 EM003547 Determination of Chlorine In Air Reagents \ 1. Potassium Iodide Solution; 30J6. Dissolve 300 g. of potas sium iodide in distilled water and dilute to one liter. Keep in brown bottle and use within 48 hours. 2. Sodium Thiosulfate Solution; 0.01 N. Dissolve 2.50 g. of sodium thiosulfate in distilled water and dilute to one liter. , 3. Indicator. Dissolve 1 g. of starch in 25 ml. of hot water. Prepare daily. 0.1 per cent solution of amylose may be substituted for the starch solution and is stable for 2-3 months. ' Apparatus 1. Fritted Glass' Scrubber. Procedure Collect 100 liters of air at the rate of 5 liters per minute in a fritted glass scrubber containing 75 nl of potas sium iodide solution. Transfer the solution to a 250 ml. glass-stoppered Erlenmeyer, add 1 ml. sulfuric acid (6 N), 1 ml. of indicatorf and titrate to a colorless end point with standardized sodium thiosulfate (0.01 N) solution. Note8: A. Run a blank during the sample collection period. Purify the air for the blank sample by passing the air through a glass fritted scrubber contain ing 75 ml. of sodium hydroxide solution (0.01 N). 6. Bromine, ozone, nitrogen dioxide, and other oxidizing agents interfere but can be grouped under "chlorine" because they are of about the same toxicity. Calculations ppm. CI2 (at 30 C and 760 mm.) s mis. Na2S203 x 1.24 EP003548 Determination of Chlorine in Air (Colorimetric Methodl Reagents 1. Ortho-tolidine Solution. Dissolve 1.35 gm. io-tolidine dibydrochloride in 300 ml. distilled water. Add this solution, with constant stirring, to 500 ml.: dilute RC1 made by mixing 350 ml. distilled water and 150 ml. con centrated HC1 (sp. gr. 1.18-1.19). The reagentshould be stored in amber bottles and should not be used after six months. 2. Sodium Hydroxide Solution; 0.1 N. Dissolve A gm. NaOH in distilled water and make up to one liter. . 3. Sulfuric Acid Solution; 1:1. Add 50 ml. of concentrated H2SO4 (sp. gr. 1.S4) to 50 ml. of distilled water, stir ring constantly. a. . Apparatus 1. Midget Impinger or rritted Glass Scrubber (50 ml.). 2. Beckman Model B Spectrophotometer, with 1.00 cm. Corex cells. "" Procedure Collect 2.83 liters of air at the rate of 0.283 liters per minute, drawing the sample through either a midget impinger, or a fritted glass scrubber, containing 9*0 ml. of 0.1 H IfaOH. Add 1 ml. of the o-tolidine reagent and 1 drop of 1:1 H9SO4 to the sample. Mix and place in the dark for 5-15 min utes to allow the color to develop. Transfer to a 1.00 cm. Corex cell and read the absorbance at 445 mu. Calculations By means of-the working curve, convert the absorbance to micrograms of chlorine. ppm. = micrograms CI2 found x 0.124 EM003549 Determination of Sulfur Dioxide in Air Reagents 1. Iodine Solution: 0.01 N. Dissolve exactly 1.27 g. of iodine and 250 g. of potassium iodide in water. Dilute to one liter. 2. Sodlnm Thiosulfate Solution: 0.01 N. Dissolve 2.50 g. of sodium thiosulfate in distilled water and dilute to one liter. 3. Indicator. Dissolve 1 g. of starch in 25 ml. of hot water. Prepare daily. 0.1 per cent solution of amylose may be substituted for-the starch solution.and is stable for 2-3 months. Apparatus 1. Dispersion Scrubber; fritted glass. .. . Procedure Collect 100 liters of sample at the rate of 5 liters per minute in a fritted glass scrubber containing approximately 50 ml. of distilled water and exactly 25 ail* (use pipets) of iodine solution (0.01 9). Lift frit clear of the iodine solu tion, blow out any absorbed iodine and rinse thoroughly. Remove frit completely and proceed with titration as outlined below. Acidify with 2 ml. of hydrochloric acid (0.1 N) and imme diately titrate with standardized sodium thiosulfate solution (0.01 N) adding starch indicator just before the end point. Vote: A. To eliminate interference from possible sodium oxide in air the sample is acidified prior to the sodium thiosulfate titration. B. The interference from uneaturated organic compounds (olefins) and losses of iodine due to vapor pressure is eliminated by running a blank simultaneously with the sample. Purify the air used for the blank cor rection by scrubbing with 0.01 9 sodium hydroxide solution. EM003550 i -2 - C. Hydrogen sulfide interference is eliminated by trap ping sulfides on lead acetate paper* Calculations ' Determine the volume of iodine consumed by the'blank and the sample and from this the net volume of iodine consumed by the sample. ppm. S02 (at 30 C and 760 mm.) = mis. I2 (net) x 1.22 EP003551 0 Determination of kumnni-am Ion in Air Reagents Kessler* s Reagent-. Dissolve 50 g. KI in 35 ml.-cold" ammoniafree water. Slowly add a saturated solution of mercuric chloride until a slight red precipitate appears. Add 400 ml. clear 36% sodium hydroxide. Dilute to 1 liter, let-stand to sediment, decant to filter;- Store in a brown bottle. Apparatus 1. Beckman Model B Spectrophotometer. 2i Corex Cells; 1 cm. Procedure Collect 200 liters of sample at a rate of - 5 liters per minute in a fritted glass scrubber containing 50 ml-, of triple distilled water. Take a 10 ml. aliquot of the composite, add 1 ml. Kessler's Reagent, and after 15 minutes-read the optical density of the sample at 410 mi. Obtain the concentration of ammonium ion from the standard curve. Calculations Milligrams = mg. KH^ found x 25 EM003552  I* i Determination of Chloride in Air e Reagents 1. Hi trie Add; 1:1. Mix equal quantities of acid'and water. 2. Silver Hitrate- Crystals; 20-30 mesh. Apparatus ; Beckman Model B Spectrophotometer, with 1.0 cm. Corex cells. Procedure . Collect 200 liters of air at a rate of 5 litersper- minute*in a fritted glass scrubber containing 50 ml. of triple distilled water. Take a 10 ml. aliquot of the composite* add 1 ml. of 1:1 HNO3 and 0.1 g. 20-30 mesh AgROj. Let stand in the dark for 15 minutes and read the absorbance at 525 nyi, using a 1.0 cm. Corex cell. Convert the absorbance to milligrams chloride by means of the working curve. - Calculations mg. Cl"/m3 = jag. Cl- found x 25 EM003553  1* Determination- of-Total Sulfate In*Air Reagents 1. Barium Chloride Dihrdrate: 20-30 mesh. 2. Salt-Acid Solution. Dissolve 240 g. of sodium chloride in 200 ml. vater. Add 20 ml. concentrated hydrochloric -acid. Dilute to 1 liter vith vater. Annaratus Beckman Model B Spectrophotometer, vith 1.0 cm. Corex cells. Procedure Collect 200 liters of sample at a rate of 5 liters-per minute in a fritted glass scrubber containing $0 ml.- oftriple distilled* vater.' Take a 10 ml. aliquot of the composite,-add ' 1 ml. salt-acid solution and approximately 15 crystals- (20^30 mesh) of barium chloride. Mix thoroughly. Measure at once on the spectrophotometer at 525 mp -using 1.0 cm. cells. Refer the reading to a standard curve prepared using standard sodium sulfate solution. Calculations Ret mg. S04*/3 s g. SO4* found x 25 EH003554 LOUISIANA UNDERWRITERS AGENCY. Inc. LOUISIANA NATIONAL BANK BUILDING BATON ROUGE, LA. January 22, 1953 Esso Standard Oil Company P. O. Box 551 Baton Rouge, Louisiana Gentlemen: We will be pleased to write tbe insurance for Dr. Choppin accord' ing to the requirements of your insurance certificate. We quote below the premiums that are applicable. Some of these are estimates, for workmen's compensation and public liability it surance, as you know, are based upon payrolls. If you need any additional information, please telephone us at 2-4766, and we can readily give it to you. Automobile Public Liability ' $100/300,000. 00 $ 58.80 Property Damage $ 50,000.00 $ 50.00 Fire and Theft Collision Actual Value $50.00 Deductible $ 39.00 $ 59.00 Workmen's Compensation Comprehensive General Liability Public Liability $100/300,000.00 Property Damage $ 50,000.00 Cargo on Truck $ 75.00 (Estimate) $ 40.00 (Estimate) $ 25.00 (Estimate) $ 60.00. EM00355 5 V negotiations of the attached contract with Dr* Choppin and Dr. West. It vdll be necessary for jfinSs and Pat Casey to hold an informal discussion with Dr. Choppin in order to develop the information to be inserted in the blank spaces in the attached draft. We would submit the draft* signed by HJV, to Dr. Choppin for his signature.. I would 4>hen- suggest that John Gogan-be given the responsibility for coordinating the >rk. to^adcne under the contract with the assistaice of Iwiin HatTteSe and Maurice Amis. I would visualize that we would request all reports to be submitted in triplicate* with a copy to each of these thpee.^^^jns. Dr. Choppin would be requested to contact jjFeftn gogatr on all matters pertaining to the contract and John Cogan in turn would submit all special requests to Dr. Choppin. Does this sound an right to you? ! 1 ! EM003556 % ID KCakIm e nSSoff1" utu r|M CHM i1 H UL * w a|c r e o r * c K D T L E CR L O wy r% J b rawsT 4i 1" IsPetroleum Chemical JAN 251953 rgv_ oJLc, x* am SjWU-w* 42 PETROLEUM PRODUCTS LAB. 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