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Home My WebLink About800683.tiff RESOLUTION RE: ACCEPT PROPOSAL OF JOHNSON-MARCH CORPORATION FOR DUST ABATE- MENT CONCERNING ROCK CRUSHER. WHEREAS, the Board of County Commissioners of Weld County, Colorado, pursuant to Colorado statute and the Weld County Home Rule Charter, is vested with the authority of administering the affairs of Weld County, Colorado, and WHEREAS, Weld County has received a temporary permit from the State Health Department for its rock crusher provided the County proceed with the purchase of a suitable means for the abatement of dust, and WHEREAS, a proposal from Johnson-March Corporation for dust abatement concerning the rock crusher has been presented to the Board of County Commissioners, and WHEREAS, the Board, after studying said proposal deems it advisable to accept the same . NOW, THEREFORE, BE IT RESOLVED by the Board of County Commis- sioners of Weld County, Colorado that the proposal of Johnson- March Corporation for the abatement of dust concerning the County' s rock crusher be, and hereby is, accepted. The above and foregoing Resolution was , on motion duly made and seconded, adopted by the following vote on the 27th day of February, A.D. , 1980 . BOARD OF COUNTY COMMISSIONERS WELD COUNTY, COLORADO /17/ L city (Aye) r C. W. Kirby, hairman ATTEST: `(r fr cx ,gi,.,n.v+.*T f•�.40,61 O�Lr✓i//J i_e«�.A. c Ast_ (Aye) eonard L. Roe, Pro-Tem Weld County Clerk and Recorder and Clerk to the Board (Aye) Norman Carlson 7 (Aye) . Deputy County Clerk• Dunbar AP ED AS TO FORM: ye) P ) G, J e K. Stet mark County Attorney DATE PRESENTED: MARCH 3, 1980 800683 I` DEPARTMENT OF ENGINEERING PHONE (303) 356-0000 EXT. 421 P.O. BOX 758 11141.14 4r-1i CO GREELEY, COLORADO 80631 COLORADO February 28, 1980 K and P, Inc. 777 Nile Street Golden, Colorado 80401 Gentle en: The Posrd of County Cacmissioners, Weld County, Colorado, acx.tpts the offer of Johnson-March Corporation, proposal 79C-844A for the Chen-Jet Dust Control System, less items #11, #12, and #13 listed on page 10. Weld County will provide the items listed on page 11 of the subject proposal. It is requested that you initiate action for soonest delivery and install- ation. Since Wayne S. Smyth Director of Engineering WSS:sad CC: Johnson-March Coip`,ration W JOHNSON-MARCH CORPORATION ?„.4 0. 3O1B MARKET STREET • PHILADELPHIA, PA. 19104•(215) 243-1700 October 23, 1979 Silver Engineering Works, Inc. 3309 Blake Street Denver, C0 80205 . Attention: Mr. C. H. Iverson Chief Engineer Reference: Chem-Jet System and Alternate Combination Chem-Jet and k=er."' Bag Collector System Our Proposal No. 79-844 A & B Gentlemen: Thank you very much for the opportunity to offer our recommendations regarding a dust control system. In accordance with the information furnished to us, we are pleased to submit the enclosed proposal for a Chem-Jet System and an Alternate Combination Chem-Jet and Bag Filter Dust Control System. The attached quotation is in two parts as follows: to Part A - Chem-Jet System Part B - Combination System The Johnson-March Corporation, in addition to designing and manufac- turing dust control equipment, provides a complete turnkey installa- tion service. Sole responsibility is placed with us to furnish you with a fully installed and properly operating dust control system. We would, upon your request, appreciate the opportunity to further discuss our turnkey service. The attached literature will give you additional information on the many advantages of our dust control methods and the benefits you will obtain from this dust control installation . Your consideration is greatly appreciated and we look forward to being of further service to you. Cordially yours, THE JOHNSON-MARCH CORPORATION Michael J1 Natale cc: K & P Incorporated National Sales Manager 777 Nile Street Golden, CO 80401 MJN/KF-H/lcd Phone: 303-279-7777 II-IF CLEAR C..I II DICE IN [.OHS I t_ONTROI THE JOHNSON - MARCH CORPORATION 3018 MARKET STREET XiC*IQXJC4EXDfX1 PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 1 October 23, 1979 To: Silver Engineering Works, Inc. 3309 Blake Street Denver, CO 80205 Attention: Mr. C. H. Iverson Chief Engineer Reference: Chem-Jet Dust Control System The Johnson-March Corporation proposes to sell the purchaser the equipment and/or services specified herein under the terms, condi- tions, and prices stated. All prices are F.0.B. factory unless noted otherwise in body of quotation. Prices quoted are effective for 30 days from date of quotation. All State Sales or Use taxes additional . This proposal is based on the following data: ONS PART A - CHEM-JET SYSTEM DESIGN AND OPERATION In this proposal we have described the areas where dust control treatment is required and have listed the equipment and engineering services we will furnish. The system we have recommended is care- fully engineered to meet the needs of your specific plant operations and will provide you with economical , efficient dust control . This system has been designed to control the dust at the application point areas. The carryover dust control effect resulting from treat- ment of the material at the application points will extend the dust control to subsequent material handling operations such as conveyor transfer points, screens, conveyor and screen discharge to bins, and conveyor discharges to storage piles. The system is designed for a 400 ton per hour unloading capacity, a 20 ton receiving hopper and an ambient material temperature. A maximum of 1-1/2 gallons of Compound MR mixed solution per ton of material will be distributed among all the points of application. The amount of Compound MR mixed solution applied to each ton of ma- terial is determined not by the number of application points, but is determined by the type, size and temperature of the material . In- creasing or decreasing the number of applications does not increase or decrease the amount of solution applied per ton. THE JOHNSON - MARCH CORPORATION 3018 MARKET STREET XVX MAX X$O 1404 PHILADELPHIA,PA.19104 215-243-1716 _PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 2 We also wish to call your attention to the fact that this proposal includes the services of a Field Engineer to supervise the placing of the system into operation and to instruct your personnel in the proper use and maintenance of this equipment. Our experience has shown that the final requirement for a properly performing dust con- trol system requires the services of an experienced Field Engineer to adjust the system in accordance with the actual plant operating conditions; in other words, to synchronize system with plant. If approval is required by local air pollution control authorities, we will assist you, at no additional cost, to prepare the sections of forms pertaining to our equipment and furnish you with additional copies of our drawings you may need for this purpose. Item # 1 - Proportioning Equipment We will furnish an Automatic Proportioning System with necessary pumps, motors and controls as described herein to provide the required quantity of Compound MR mixed solution to all application points at the required pressures. The proportioner is to be located within 50 feet of the receiving hopper. Equipment to be furnished: Code: P-6b-E MOO Size: 1-1/2" 1 - Type S Proportioner, Style B, 1:1000 dilution ratio per specification sheet 3173-1 complete with: 1 - Chem-Jector Concentrate Pump, per specification sheet 3343-2. 1 - 1/4 H.P. Motor. 1 - Inlet Water Pressure Regulator. 1 - Model GX-40 Turbine Pump rated at 30 gpm at 130 psi , mounted and coupled with: 1 - 5 H.P. Motor, 3500 rpm. 1 - Drum Suction Level Indicator Assembly. 1 - Across the line Magnetic Starter for 5 N.P. Motor. 1 - Start-Stop Pushbutton Switch. 1.1 THE JOHNSON - MARCH CORPORATION 3018 MARKET STREET XJtTkXJCAPX9UC1 PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 3 Item # 2 - Receiving Hopper At the receiving hopper the sprays will be controlled by a Chem-Jet Flow Controller, actuated by a spray timer, and a pushbutton switch. The operator will energize the pushbutton switch as the truck starts to dump and the timer will automatically turn off the sprays at the end of a pre-set "adjustable time" , and reset to zero ready for the next dumping cycle. Equipment to be furnished: Code: A-27-S Size: 3/4" 1 - Chem-Jet Flow Controller, Style A-3, 150 psi, complete with hand valve, strainer and solenoid control valve, per specification sheet 3613-2. 1 - Spring-Loaded Check Valve. 1 - Pushbutton Switch. 1 - Timing Relay. 12 - Spray Housing and Strainer Assemblies, cast brass, complete with Spray Jets, per Specification Sheet 3713-3. Item # 3 - Discharge of First Conveyor Transfer The sprays will be regulated by a Chem-Jet Flow Controller actuated by an Automatic Spray Control . The Automatic Spray Control is to be interlocked with the conveyor motor starter so that the sprays will operate only when the conveyor is moving and under load. Equipment to be furnished: Code: A-28-S Size: 3/4" 1 Automatic Spray Control , Model UB-5, per specification sheet 3453-2. 1 - Chem-Jet Flow Controller, Style A-3, complete with hand valve, strainer and solenoid control valve, per specifica- tion sheet 3613-2. - 1 - Swing Check Valve. 1 - Pushbutton Switch. 3 - Quick Acting Manual Shutoff Valves. A 6 - Spray Housing and Strainer Assemblies, cast brass, complete F with Spray Jets, per Specification Sheet 3713-3. THE JOHNSON - MARCH CORPORATION 3018 MARKET STREET X44 pexrxyp PHILADELPHIA.PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 4 Item # 4 - Mouth. and Discharge of Jaw Crusher Application will be at the mouth and discharge of the crusher con- trolled by a Chem-Jet Flow Controller and by an Automatic Spray Con- trol . The Automatic Spray Control will detect changes in the crusher motor current, and will automatically turn the sprays on and off with the flow of material . Equipment to be furnished: Code: A-39-S Size: 3/4" 1 - Automatic Spray Control , Model LC-2, per specification sheet 3483-2. 1 - Chem-,Jet Flow Controller, Style A-3, complete with hand valve, strainer and solenoid control valve, per specifica- tion sheet 3613-2. 1 - Swing Check Valve. 1 - Pushbutton Switch. 3 - Quick Acting Manual Shutoff Valves. 5 - Spray Housing and Strainer Assemblies, cast brass, complete with Spray Jets, per Specification Sheet 3713-3. Item 5 - Mouth and Discharge of Roll Crusher Application will be at the mouth and discharge of the crusher con- trolled by a Chem-Jet Flow Controller and by an Automatic Spray Con- trol . The Automatic Spray Control will detect changes in the crusher motor current, and will automatically turn the sprays on and off with the flow of material . Equipment to be furnished: Code: A-39-S Size: 3/4" 1 - Automatic Spray Control , Model LC-2, per specification sheet 3483-2. 1 - Chem-Jet Flow Controller, Style A-3, complete with hand valve, strainer and solenoid control valve, per specifica- tion sheet. 3613-2. 1 - Swing Check Valve. 1 - Pushbutton Switch. 3 - Quick Acting Manual Shutoff Valves . 5 - Spray Housing and Strainer Assemblies, cast brass, complete with Spray Jets, per Specification Sheet 3713-3. THE JOHNSON - MARCH CORPORATION 3018 MARKET STREET XXIxiX?Afx01X1 PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 5 Item # 6 - Pressure Regulator It will be necessary to provide a pressure regulator, as follows, to insure regulated pressures at all low pressure applications through- out the system. Code: PR-1 Size: 3/4" 1 - Pressure Regulator with gauge. Item # 7 - Spare Parts Kit • We have included in this proposal a Spare Parts Kit complete with special tools and spare parts for normal maintenance of the system. e Item # 8 - Engineering Services In addition to the equipment to be furnished, this proposal includes the following engineering services: 1 . Detail drawings of the application areas will be provided where possible and will depend on the amount of detail shown on the drawings which you furnish to us. 2. After you have completed the piping, wiring and equipment instal- lation in accordance with our drawings, we will provide a quali- fied field engineer to supervise the following, provided instal- lation is made within one year of shipment: a - Completion of the piping from the controls to the spray headers where this detail is not furnished on our drawings. b - Installation of the proper size and type of spray jets which will be supplied by the field engineer. (Spray jets will not be shipped with the system except in special cases) . c - Adjustment of all Chem-Jet equipment for proper performance under plant operating conditions. efts Our field engineer will instruct the operating and maintenance per- sonnel in the proper procedures to be followed for the most effective operation of the Chem-Jet System. THE JOHNSON - MARCH CORPORATION 3018 MARKET STREET WAX=Eat*PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 6 Please note that our field engineers are not permitted to work around moving equipment which does not have adequate safeguards for the pro- tection against loss of life or limb. Also, a qualified maintenance mechanic should be placed under the supervision of the engineer for the installation of the dust control system. If a field engineer is sent to the plant at your request before the piping, wiring, and equipment installation are completed in accord- ance with our drawings, there will be an additional charge of $225.00 per day during the waiting period plus any additional traveling expense incurred. Field engineering service is based on work being done during ordinary working hours. Overtime hours where required will be charged extra. AUXILIARY EQUIPMENT Item # 9 - Compound MR Compound MR is especially formulated for use with our Chem-Jet Dust Control System whose successful operation is dependent upon its use. We recommend therefore that your purchase order include the following minimum requirements. 4 - 55 Gallon Drums of Compound MR in accordance with the attached price list. Gross Weight: 517 pounds per drum. Item # 10 - Filter and Automatic Flush for Inlet Water Supply We will furnish an inlet water supply filter with automatic flushing system as specified for the proportioner inlet water line. Unless a city or other potable water supply is utilized, this filter is neces- sary in order to insure the cleanest water supply possible for proper operation of the system and eliminate unnecessary maintenance. The automatic flush will periodically flush accumulated solids from the filter. This is necessary in order to prevent the filter from becoming plugged and damaged by the filter solids. A timer will automatically control the flushing cycle. THE JOHNSON - MARCH CORPORATION rs3018 MARKET STREET X :FXK#Xlk X1 PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 7 Equipment to be furnished: Code: S-2-E Size: 2" 1 - Model VRS Motorized Self-Cleaning Filter, semi-steel body and cover, brass rotor, 1/64" brass perforated screen, semi-steel motor drive, and 1/4 H.P. motor. 1 - Motor operated ball valve. 1 - Timer Control . 1 - Control Enclosure. Item # 11 - Winterization for Chem-Jet Flow Controllers ' To protect the Chem-Jet Flow Controllers against freezing and avoid costly equipment replacement, we are providing heaters with auto- matic thermostat controls for the Flow Controllers for service to minus 20 degrees F. etil3 Code: W-SH-4 4 - 325 watt strip heaters for 3/4" Style A-3, Chem-Jet Flow Controllers. Item # 12 - Winterization for Solution Supply Lines Code: W-E For operation during periods of sub-freezing temperatures we have provided a heat tracing system to protect the exposed piping from freezing to minus 20 degrees F. This will make it possible to oper- ate the dust control system on a year around basis in all but a few localities within the United States. Due to insufficient information, we are unable to make our recommenda- tions for winterizing the solution supply lines. However, we are pro- viding a price per length (160 feet) which will cover up to 80 feet of piping, and you can estimate your total requirements on this basis. The purchaser shall provide insulation for exposed piping (Rock cork, Fiberglas, Foamglas, or 1" nominal thickness or thermally equivalent insulation) . This is to include weather-proof covering where required. THE JOHNSON - MARCH CORPORATION - 9018 MARKET STREET XtIX XA2XdI X90 PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 8 Equipment to be furnished: Code: W-101-S 160' - High Temperature Tracing Wire - Teflon Insulated 700 W @ 240 V. 1 - Thermostat - Strap-on Type, NEMA 4. 2 - Rolls Glass Tape. Item # 13 - Proportioner Shelter House It is important to locate the proportioning equipment and Compound MR drum in a clean, heated area. The location should be as convenient as practical to the system application points for economical pipe runs. If such a location is not available in an existing building, we recommend the use of the heated shelter house specified. The shelter house is shipped knocked down for easy assembly in the field. Complete assembly drawings and instructions are furnished. Equipment to be furnished: Code: SH-2 I - Proportioner House, insulated, 9' x 9' x 8' high, 26 gauge galvanized construction with 2'-7" x 7 ' door, interior light, convenience outlet, 3 KW heater and thermostat control ; to be mounted on customer's concrete pad. • THE JOHNSON - MARCH CORPORATION 3018 MARKET STREET X#' X . XIkX1 PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 9 GUARANTEE OF PERFORMANCE The Chem-Jet System is guaranteed to meet Federal and State air pollution requirements for particulate emissions at the points out- lined in this proposal , provided that the system will be installed, maintained, and operated according to drawings and instructions furnished. ELECTRICAL EQUIPMENT SPECIFICATIONS The electrical equipment in this proposal is quoted on the following characteristics and specifications. Motors 1/2 H.P. or Smaller 115/60/1 Totally Enclosed Motors 3/4 H.P. or Larger 230/460/60/3 Totally Enclosed Magnetic Starters 115 Volt Control NEMA 4 Starter Pushbutton Stations NEMA 4 Application Pushbutton Stations NEMA 5 & 12 Flow Controller Solenoid Valves 115/60/1 NEMA 1 Automatic Spray Controls Enclosed Timing Relays 115/60/1 NEMA 4 Automatic Reset Timers 115/60/1 NEMA 4 Flow Controller Strip Heaters 115/60/1 Enclosed Solution Supply Pipe Heat Tracing Wire 115/230/60/1 Standard THE JOHNSON - MARCH CORPORATION M 3018 MARKET STREET ) (I=IA XII PHILADELPHIA,PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 10 PRICE PAGE Items # 1 thru 8 - Basic System Price: F.O.B. our plant, Phila. , PA. . . . $ 19,492.00 Item # 9 - Compound MR: 4 - 55 Gallon Drums Price per attached price list. Item # 10 - Filter and Flush Price: F.O.B. our plant Phila.., PA . . . . $ 3,136.00 Item # 11 - Flow Controller Heaters Price: F.O.B. our plant, Phila. , PA. . . . $ 415.00 Item # 12 - Winterization Price: F.O.B. our plant, Phila. , PA. . . . $ 283.00 per 80' piping Item # 13 - Proportioner Shelter House Price: F.O.B. Houston, TX $ 3,315 .00 Shipment: Approximately 8 to 10 weeks after approval of drawings, if required. Drawing Submittal : 3 to 4 weeks. Your approval , if required, is necessary within 2 weeks after submission to you to avoid any delay in delivery and any possible price escalation due to extended delivery. Any charges which may result from design changes or other delays, if they be at your request, will be included on our invoice in addition to our quoted prices. You will , insofar as possible, be advised of these extra charges before they are incurred. THE JOHNSON - MARCH CORPORATION acne MARKET STREET Xk4FXlCMx xl PHILADELPHIA.PA.19104 215-243-1716 PROPOSAL AND SPECIFICATIONS Proposal Number 79C-844 A Page 11 PURCHASER TO PROVIDE THE FOLLOWING: (a) Adequate supply of clean water to proportioner at a minimum of 25 gpm at a minimum pressure of 30 psi . See attached curve sheet. This is the make-up rate required for the operation of the pro- portioner, not the use rate which is determined by the total spray jet capacities. (b) An area for the proportioning equipment which is protected from. freezing. This area should be readily accessible and convenient for the placement of a 55 gallon drum of Compound MR. (c) The main and sub-main supply lines from the proportioner to a position as close as practical to the points of application. (d) At these points install suitable fittings to permit 3/4" branch headers to be piped to the actual application points. Note: The Johnson-March Corporation furnishes the necessary tees, unions, elbows and clamps for the individual spray headers with the following exceptions: Purchaser to supply interconnecting pipe and nipples. (e) All electric wiring and safety switches or circuit breakers. (f) Labor for installation of the Chem-Jet Dust Control System. It is understood that the above preparatory work is to be completed before our field engineer is called to place the system into opera- tion. _ SILVER ENGINEERING WORKS, INC. 3309 BLAKE STREET • DEIVER. COLORADO. USA 80205 CI-AIR H. IVERSON CHIEF ENGINEER October 22, 1979 Board of County Commissioners Weld County Greeley, Colorado 80631 Gentlemen : I have been retained as a consultant by the URS Company to study and recommend to you an air pollution abatement plan for your portable gravel crushing plant. The plan to be selected is subject to the acceptance of the Colorado Health Department, Division of Air Pollu- tion Control . Such acceptance is not necessarily a technical/econo- mic judgement by the Division , but could be one of personal prejudice on the part of the person making the final approval for the state. As I see it , there are two reasonable options open to you for the abatement of dust emissions and these are as follows : A. Capture the dust being generated at the points of generation and filter the dust particles out of the air used to capture the dust. This option I suggest we call the "baghouse" system. B. Suppress the generation of dust by the application of water at the strategic points in the process. Call this the "water spray" system. I have done some preliminary studies on these two systems to the extent that budgetary estimates have been made and are presented in the attached Exhibit "A". These estimates are based upon two significant factors which are: 1 . No water is available at the operating site. This is presently true at two of your four sites. 2. No electric power is available. I am not certain if this applies to all sites. In examining the alternatives , I considered water spray systems from two different vendors , Chem-Jet and DeTer. For the baghouse system, I contacted only one vendor, Flex-Kleen. /SILVER! TELEPHONE. 13031 623-0211 • TELEX 45-567 SILVERENGR DVR • CABLE-. SILVERENGR DENVER. USA Board of County Commissioners - 2 - October 22 , 1979 In observing the plant in operation at the Raymer site, which is a dry pit , we found four major sources of dust from the plant. The baghouse system captures the dust at these four major points but ignores other points which can generate dust in minor quantities. To capture all the points , it would take double the capacity of the system estimated. The water spray systems would control the dust at all points. Unfortunately, the officials of the Division of Air Pollution Con- trol consider the baghouse technology as the "Best Available Tech- nology" (BAT) and will , therefore, try to force that solution as a condition for granting a permit to operate. In my opinion, the water spray system is the "Best Practical Treat- ment" (BPT) as well as having the lowest first cost. The task is to convince the Division that Water Spray is the way to go. Jeffer- son County has at least one gravel plant operating with a water spray system by Chem-Jet, and apparently well within the air pollution emission standards. I suggest you contact Jefferson County about this before making your final decision. My recommendation to you is that you submit to the Division a per- mit application which would use the water spray system, but be pre- pared , if forced into it, to go to the baghouse system. I would further recommend that you bring into each site electric power enough to operate whichever abatement system is selected. This would sig- nificantly reduce the capital and operating costs of each system. In addition, I recommend that if the water spray system is selected, water wells be drilled at each site where it is not now available. This and the electric power would reduce the capital costs of the water spray systems by a factor of nearly one-half which should be more than pay for the power and water supply. To point out the significant factors of each alternative, note as follows: A. Baghouse System Advantages 1 . No water is needed. 2. Freezing problems insignificant. 3. No additives needed. Disadvantages 1 . Dust Disposal required. 2. Highest Capital Cost. 3. More equipment to maintain . 4. Highest energy costs. (SILVER' Board of County Commissioners - 3 - October 22 , 1979 B. Water Spray System Advantages 1 . Lower Capital Costs . 2. Simple installation. 3 . Lower energy costs. Disadvantages 1 . May not be approved by the State. 2. Requires water. 3. Must be protected from freezing. 4. Cost of surfactant agents . To reiterate my recommendation, I suggest you proceed as follows : A. Apply for a permit to operate using the Chem-Jet water spray system as recommended by the vendor. Capital cost without power and water - $58,690. B. Be prepared to compromise with the baghouse system with only one portable baghouse unit. Capital cost without power - $72,420. C. If the single baghouse system fails to achieve approval , go for a combination baghouse-water spray. Capital cost without power and water - $131 , 110. D. If all else fails , offer to use 2 portable baghouse systems. I know that this can be sold because it is "best available technology" (BAT) . Capital cost without power is $144,840. E. In the event of the approval of a water spray system, drill a 10 gpm well and bring in purchased power. This will reduce capital costs of the system by $26,290 at an added cost of $2,500 per well and what- ever portion of the costs of bringing in power that the utility will not pay for. Once your decision is reached on the alternative of your choice, I will proceed with preparing the appropriate permit application. Very truly yours , CHI/dln cc: R. C. McWhinnie, President URS Company SILVER/ EXHIBIT A Cost Comparison A B Baghouse Water Spray Chem-Jet DeTer Capital Cost w/o Power & Water $72,420 $58,690 $69,080 w/ Power & Water 65,420 32 ,400 39,880 Operating Costs/day Fuel $55, $19 $36 Additive none 15 $115 Water Requirements none 4800 g/d 1800 g/d Operating Cost/year . Fuel $10,450 $3,610 $6,840 Additive 2 ,850 $21 ,850 $10,450 $ , 0 $2 , 90 Water Costs none ? ? Cost of 200' well @ $3.50/ft = $1 ,700 10 gpm Pump 800 -4e2 $2,500 I S �� (SILVER/ Hello