425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400 May 22, 2013

LHOIST NORTH AMERICA Hulen Street 3700 PO Box 985004 Fort Worth, TX 76185

Attention: Mr. Gideon Siringi Email: Gideon.Siringi@Lhoist.com Phone: 817-732-8164

Subject: Hydrated Lime Injection System at Nelson Plant NOL-TEC SYSTEMS ®

, INC. Proposal 13767

Mr. Siringi,

We are pleased to submit for your review our budgetary (±20%) proposal for a Nol-Tec Sorb-N-Ject ® Technology system in accordance with the following:

SYSTEM CONCEPT: Hydrated Lime will be delivered on site in PD Blow er trucks. Trucks will unload to one (1) of four (4) storage silos. Each kiln will have two (2) dedi cated silos. Silo will di scharge to a Loss-In-Weight Feeder, which consists of a hopper on load cells and a drop thru rotary airlock with a VFD. Material will be conveyed via PD Blower to an injection po int with two injection lan ces per kiln. Injection location on kiln duct work TBD.

TRUCK UNLOAD DESIGN CRITERIA: (Note that the following design cr iteria are based upon information that is either assumed or known to us at the time of quoting. Customer verification of this data is required to ensure proper system and equipment sizing.) Product: Lhoist Sorbacal Hydrated Lime Bulk Density: 22 Lbs./Cu. Ft. Particle Size: Fine Moisture: Dry Temperature: Ambient Abrasiveness: Slight System Capacity: Expected 20 TPH ~ Due to the amount of manual adjustments on PD Blower Trucks, NTS can not guarantee this rate.Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 2

Conveyed Distance; Horizontal: 100 Ft. Vertical: 10 Ft. No 90° Bends: 1

EQUIPMENT: Truck Unload Blowers: 1. Two (2) Blower packages, positive displacemen t rotary blower, driven by a 75 HP, TEFC, 1750 RPM, 230/460/3/60 motor, mounted on a struct ural base with moto r slide rails and the following accessories:

 B elt drive and guard

 Intake cartridge air filter

 Intake and discharge silencers

 Check valve.

 Relief valve.

 Pressure gauge.

 Pressure switch.

 Sound enclosure with integral exhaust.

2. Two (2) Air-to-Air heat exchangers, designed to cool conveying air to within 10 oF of ambient temperature.

Clean Air Line: 3. Two (2) Lots of clean air line. Each includes:

 F orty (40) Ft. 4" sch. 40 mild steel pipe, shi pped with a standard mill finish in 20-foot random lengths.

 Two (2) Elbows, 4" sch. 40, mild steel, 90o with 12" radius and 8" tangents.

 One (1) Material handling hose, 4" diameter, 240" long.

 One (1) 4" Pipe adapter.

 One (1) 4" Bracket limit switch.

 Seven (7) 4" compression couplings with black gasket.

Silo Fill Line: 4. Four (4) Lots of silo fill lines. Each includes:

 O ne (1) 4" Pipe adapter.

 One (1) 4" Bracket limit switch

 One (1) Material handling hose, 4" diameter, 240" long.

 One hundred (100) Ft. 4" sch. 40 mild steel pipe , shipped with a standard mill finish in 20- foot random lengths.

 One (1) 4" Inline screener.

 One (1) Silo receiver, Model 232, 4" sch. 40, mild steel welded construction with internal wear shield.

 Seven (7) 4" compression couplings with black gasket.

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 3

Storage Silos: 5. Two (2) Storage silos, we lded mild steel c onstruction, having a usable capacity of 9165 cu. ft., for the storage of Hydrated Lime with a bulk density of 22 lbs/cu.ft. Silos are sized for 8 days of storage of sorbent for kiln one. S ilo is constructed with the following features:

 1 4'-0" diameter.

 66'-0" cylinder height.

 85'-0" overall height.

 60° cone to a 24” discharge diameter at a height of 15'-0" above grade.

 Full enclosed skirt support with 3'-6" wide door.

 20" top deck manway with pressure/vacuum relief valve.

 Vent filter mounting flange on top deck.

 Four (4) level control mounts.

 Fill line support brackets.

 Top perimeter guard rail.

 Ladder with safety cage and st ep-off platform (as required).

 80 MPH wind load design.

 30 PSF roof load.

 Seismic II design.

 Interior is unpainted.

 Exterior painted finish is enamel (white).

 Silo is shipped F.O.B. shipping point. (Freight and erection not included.)

6. Two (2) Storage silos, welded mild steel c onstruction, having a usable capacity of 7000 cu. ft., for the storage of Hydrated Lime with a bulk density of 22 lbs/cu.ft. Silos are sized for 8 days of storage of sorbent for kiln two. S ilo is constructed with the following features:

 1 4'-0" diameter.

 53'-0" cylinder height.

 60'-0" overall height.

 60° cone to a 24" discharge diameter at a height of 15'-0" above grade.

 Full enclosed skirt support with 3'-6" wide door.

 20" top deck manway with pressure/vacuum relief valve.

 Vent filter mounting flange on top deck.

 Four (4) level control mounts.

 Fill line support bra ckets.

 Top perimeter guard rail.

 Ladder with safety cage and st ep-off platform (as required).

 80 MPH wind load design.

 30 PSF roof load.

 Seismic II design.

 Interior is unpainted.

 Exterior painted finish is enamel (white).

 Silo is shipped F.O.B. shipping point. (Freight and erection not included.)

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 4

NOTE: Ladders, safety cages, platforms, and handrails are shipped loose, in sections, to be field assembled and installed by installation contractor.

Silo Accessories: 7. Four (4) Lots of HVAC for the silo skirts. Each includes:

 O ne (1) Wall mounted exhaust fan, with thermostat and guard.

 One (1) Rain hood.

 One (1) Aluminum louver.

 One (1) Heating unit, 10 kW, with thermostat.

8. Four (4) Lots of lighting for the silo skirt. Each includes:

 E ight (8) Wall mounted lights, 100 W.

 Two (2) Light switches.

 Two (2) 120V Receptacles.

 Two (2) Emergency exit LEDs.

 One (1) Light control enclosure.

9. Two (2) Jib cranes wi th electric hoist.

10. Four (4) Lots of silo level control. Each includes:

 Fo ur (4) Proximity level controls. Low level, mid level, high level, and emergency high level control.

 One (1) Continuous guided radar level control.

Silo Dust Collection: 11. Four (4) Dust collectors Mode l 238, 60NT25, fabricated of 12 ga . mild steel, capable of 17" w.g. pressure, with access door, air manifold an d valves for reverse pulse cleaning. Each includes:

 On e (1) Weather hood, 10" dia., mild steel.

 One (1) Control enclosure, dus t collector, 5 bank, NEMA 4, mild steel junction box with timer board, 110V.

 One (1) Magnehelic differential gauge, indoor/outdoor.

 Twenty-five (25) Cartridges, spun bond polye ster, 5.75" dia. x 43" long, 30 sq. ft. each.

 Twenty-five (25) Clamps, 1⁄2" wide, 301 stainless steel with quick release.

Silo Discharge: 12. Four (4) Fluidizing bin bottoms, Model 328, fabri cated of mild steel, 24" diameter flanged inlet, 70o cone to a 12" diameter flanged di scharge, complete with three individual air injection valve assemblies, having ceramic seats and abrasion resistant clear urethane cone seals. Also included is a si ngle coil solenoid valve for aeration valve se quencing, with hoses and fitting s. Each also includes:

 On e (1) Butterfly valve, 12" with carbon stee l disc and 416 stainless steel shaft, has a manual handwheel.

 One (1) 12" Spool section, mild steel.

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 5

 One (1) Butterfly valve, 12" w ith carbon steel disc and 416 stai nless steel shaft, has rack and pinion double-acting air operator, solenoid va lve and limit switches. Valve is factory

assem bled, pre-piped, and pre-wired to a NEMA 4 limit switch housing.

 One (1) Flex connection.

 Four (4) Clamps, 1⁄2" wide, 301 stainless steel with quick release.

Weigh Hoppers: 13. Four (4) Weigh Hoppers, 45 cu. ft. capacity fabricated of mild steel with a 12" dia. inlet, a 60° cone to a 10" dia. discharge, and six (6) tangential aeration je ts, with controls. Each also includes:

 Tw o (2) Single cartridge dust filters, Model 279, 9" dia., mild steel fabricated for mounting direct to hopper top. Complete with 30 square feet of cartridge filter media, 36" long top removal mild steel cartridge, 1⁄2" dia. air hose. (Plumbing shipped loose for field assembly.)

 One (1) Load cell, mild steel, 3 module kit, 5,000 lb. per cell. In cludes stainless steel summing box, mounts, load cells and cable.

Airlock Packages: 14. Four (4) Airlock packages, Model 257, 10 X 10, with 0.18 CFR displacement. Cast iron, housing construction with 8-vane welded steel ro tor with fixed blade tips. Driven by a 1 HP, 1750 RPM, TEFC motor and gear drive which is side-mounted from the valve housing. Package includes:

 Ro ller chain & sprocket drive with enclosed guard.

 Outboard bearings.

 Packing gland seal with air purge connec tion. Requires compressed air service (by customer).

 Zero speed switch.

 One (1) Butterfly valve, 10" with carbon steel disc and 416 stainless steel shaft, has rack and pinion double-acting air operator, solenoid va lve and limit switches. Valve is factory assembled, pre-piped, and pre-wired to a NEMA 4 limit switch housing. For automatic isolation of rotary valve.

 One (1) Spool section, 10" mild steel.

 3" convey line adapter.

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 6

DESIGN CRITERIA-HYDRATED LIME INJECTION: (Note that the following design cr iteria are based upon information that is either assumed or known to us at the time of quoting. Customer verification of this data is required to ensure proper system and equipment sizing.) Product: Hydrated Lime Bulk Density: 22 Lbs./Cu. Ft. Particle Size: Fine Moisture: Dry Temperature: Ambient Abrasiveness: Slight System Capacity: 2100 PPH Kiln One, 1600 PPH Kiln Two Conveyed Distance; Horizontal: 150 Ft. Vertical: 50 Ft. No 90° Bends: 6 Convey Line Dia: 3" Sch 40

ESTIMATED SYSTEM OPERATING CONDITIONS: Air Flow: 200 CFM

EQUIPMENT: Convey Line Blowers: 15. Four (4) Blower packages, positive displacement rotary blower, driven by a 15 HP, TEFC, 1750 RPM, 230/460/3/60 motor, mounted on a struct ural base with moto r slide rails and the following accessories:

 Be lt drive and guard

 Intake cartridge air filter

 Intake and discharge silencers

 Check valve.

 Relief valve.

 Pressure gauge.

 Pressure switch.

 Sound Enclosure with integral exhaust.

16. Four (4) Air-to-Air heat exchangers, designe d to cool conveying air to within 10 oF of ambient temperature.

Clean Air Line: 17. Two (2) Lots of clean air line. Each includes:

 Si xty (60) Ft. 3" sch. 40 mild steel pipe, shi pped with a standard mill finish in 20-foot random lengths.

 One (1) Tee bend, 3" sch 40 mild steel.

 Four (4) Flanged adapter, 3" mild steel construction.

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 7

 Two (2) Butterfly valves, 3" with carbon steel disc and 416 stai nless steel shaft, has rack and pinion double-acting air operator, solenoid va lve and limit switches. Valve is factory

assem bled, pre-piped, and pre-wired to a NEMA 4 limit switch housing.

 Four (4) Elbows, 3" sch. 40, mild steel, 90o with 6" radius and 6" tangents.

 Thirteen (13) 3" Compression couplings with black gasket.

Convey Line: 18. Two (2) Lots of convey line. Each includes:

 Tw o hundred (200) Ft. 3" sch. 40 mild steel pipe , shipped with a standard mill finish in 20-foot random lengths.

 Six (6) Bends, Model 207, 4" sch. 40, wear back, 90o, 40" centerl ine radius and 12" tangents.

 Twenty-four (24) 3" Compression couplings with black gasket.

Splitters and Injection Lances: 19. Two (2) Lots of convey line splitters a nd injection lances. Each includes:

 On e (1) Flanged adapter, 3" mild steel construction.

 One (1) Convey line splitter, 3" sch 40 inlet to two (2) 2 1⁄2" sch 40 outlets. Splitter is designed to create back pressure to ensure an even split of material to each injection point.

 Forty (40) Ft. 2 1⁄2" sch. 40 mild steel pipe, shipped with a standard mill finish in 20-foot random lengths.

 Four (4) Tee bends, 2 1⁄2" sch 40 mild steel. End capped.

 Two (2) Full port air operated ball valves.

 Two (2) Full port manual ball valves.

 Two (2) 2 1⁄2" Spool sections.

 Four (4) Flanged adapters, 2 1⁄2" mild steel construction.

 Two (2) 2 1⁄2" Lance injectors, 304 stainless steel construction.

 Two (2) Blow port assemblies, with Chicago fitting. For manual compressed air cleaning of lances.

 Two (2) Pressure transmitters, -250 to 250 in.w.c.

 Two (2) Pressure transmitter air manifolds.

Electrical Equipment: 20. One (1) Motor control panel with PLC.

21. Two (2) Remote I/O Panels.

22. Four (4) Silo scale panels.

BUDGETARY SYSTEM PRIC E, (Items 1-22) .............................................. $2,045,000.00

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 8

UTILITIES: Please note, it is required the customer provide clean, dry, co mpressed air at 80 PSIG minimum to 100 PSIG maximum for the above Nol-Tec system to insure optimum operation. Through the pressure controller, the system will be regulated to the proper conveying pressure. Electrical power is to be furnished as specified in the item descriptions.

TEST CLAUSE: Please note that certain assumptions have been made with regard to material characteristics in the design of this system. Nol-Tec reserves the right to test a representative sample of the material to verify these assumptions. If th e outcome of the testing re sults in changes to the design of the system, we will adjust our proposal accordingly. Any resultant pricing changes will be submitted to the customer for approval prior to implementation. Tests will be performed at NolTec’s facility in Lino Lakes, MN. Charges for te sting (if applicable) are to be determined on an individual case basis. Test mate rial freight costs (to a nd from Nol-Tec) are the responsibility of the customer. Any additional costs for testing are to be based upon specific testing requirements. We require an MSDS for all materials prior to testing. Tested materials must be returned to the customer after trials

. Nol-Tec cannot dispose of tested materials.

FREIGHT: All prices are FCA Lino Lakes, Minnesota (and shipping points), freight pre-paid and added. Fuel surcharges may appl y. Export crating is not included.

DELIVERY: To be determined at time of order. Cu rrent schedule is ten to twelve (10-12) weeks after drawing approval. Drawings will be issued for approval approximately six to eight (6-8) weeks after receipt of purchase order and al l necessary engineering information.

TERMS: 20% invoiced upon receipt of purch ase order (verbal or written). 70% progressive payments monthly (based on timeline of job). 10% invoiced upon acceptance of equipmen t, not to exceed 90 days after shipment. All invoices are due net 30 days.

PRICING VALIDITY AND RISING STEEL COSTS : Due to current volatility in the steel market, material escalation (if any) will be based on current market costs. Pricing in this pr oposal is based on today’s market cost. Any increase in steel cost, between the purchase order placement date and mate rial procurement date (above this benchmark) will be to the customer’s account.

If awarded a contract, Nol-Tec reserves the right to revise and resubmit our proposal (based on current market conditions) for final customer acceptan ce. All pricing will be based on maintaining a predetermined delivery schedule. Any delays, re lated to the agreed upon delivery time line, could delay equipment procurement and may result in an overall system and/or component price increase.

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 9

ENGINEERING : Two (2) sets of engineered drawi ngs and a maintenance manual provided in digital format are included in the above prices. The documentati on provides sufficient detail to insure the proper installati on of the components proposed. Additional sets of drawings or hard copies of manuals are available at an additional cost. Approval drawings will be submitted via e-mail or U.S. Postal Service. Manuals are delivered to one location via UPS ground se rvice. Alternate or express delivery services can be provided upon request and will be charged to the customer.

SPARE PARTS : Spare parts pricing is not included. A detailed spare parts list is provided after approval of engineered drawings.

START-UP : Start-up service is at an additional cost , and as stated in the enclosed Terms and Conditions.

EXCEPTIONS : Unless stated above, we do not include st ate and local taxes, freight, installation labor and materials, motor contro ls, explosion relief devices, founda tions and footings, pits and pit steel, tubing supports, structural steel work, fast eners, compressed air source, compressed air piping, air assist pilot line piping, or anyt hing not specified in the item desc riptions. Drilling and welding of air assist fittings to conveying line is by others. Above system and piping component quantities are estimated based on information in our possession at time of quoting. Nol-Tec reserves the right to adjust design, quantities, and pricing if actual layout necessitates. To ensure proper operation, it is the responsibility of the customer to provide uninterrupted materi al flow out of feed vessels that are not supplied by Nol-Tec such as silos, hoppers, railc ars and trucks. Due to the varying condition of pressure differential railcars/tru cks and the number of manual adju stments possible on these vessels, Nol-Tec cannot guarantee an unloading rate.

EQUIPMENT TAGGING : Major equipment components provided by Nol-Tec are identified with laminated or sticker tags that in clude the line item of the shippi ng schedule, job number, customer name, quantity ordered and customer P.O. number. Special equipment tags or additional information can be provided at an additional cost.

PAINT : The above proposed equipment is provided with one coat of Nol-Tec standard silicone modified alkyd paint with a gloss finish on external (non-product contact) st eel surfaces, unless noted otherwise. Equipment is not prep ared to prevent overspray onto inte rior (product cont act) surfaces. If interior overspray is not acceptable, there will be an additional charge. Stainless steel, aluminum, and non-ferrous surfaces are unpainted. Pipe, tubing and bends are supplied with a standard mill finish, unpainted. Purchased components from Nol- Tec suppliers are to be painted manufacturer's standard paint. If other than th e standard paint is required, it can be furnished at an extra cost.

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400Nol-Tec Systems, Inc . * Proposal 13767 * May 22, 2013 * Page 10

425 Apollo Drive • Lino Lakes, MN 55014 • P(651) 780-8600 F(651) 780-4400 This proposal, including the specifications, draw ings, manuals, and any other information submitted, are considered proprietary and are disclosed in conf idence upon condition they are not to be reproduced or disclosed to anyone , other than personnel in the co mpany to whom the proposal is addressed, without written permi ssion of Nol-Tec Systems, Inc.

Thank you for your interest in Nol-Tec Systems, Inc. Should you have any questions on this proposal, please contact us.

Respectfully,



### NOL-TEC SYSTEMS ®

, INC

.

Mike Manning Regional Sales Manager mikemanning@nol-tec.com Ph: 651-203-2561 Cell: 651-308-9209

MM:kl

Enclosure: Terms & Conditions 042407-Q Drawing: 13767-0

Copy to: Dave Luzan – Luzan & Company5.147.SALE.04.30.07.01 Nol-Tec Systems, Inc. General Terms and Conditions of Sale 042407-Q Page 1 of 3 NOL-TEC SYSTEMS, INC. GENERAL TERMS AND CONDITIONS OF SALE

This Quotation is subject to a ll instructions, terms and conditions on the face hereof and also the following terms and conditions:

1. Warranty . Nol-Tec Systems, Inc. (hereinafter called "Nol-Tec") makes the following limited warranty:

Nol-Tec warrants to the origi nal purchaser only (hereinafter referred to as "Buyer") that the parts manufactured by Nol-Tec of each new and unused system purchased from or through Nol-Tec
under these Terms and Conditions , which parts have not been altered, changed or repaired in any manner, will be free from
defects in material and workmans hip for a period of one (1) year from the date of delivery. If any such part is not as warranted and if the Buyer notifies Nol-Tec of such defects in writing within one year of delivery, Nol-Tec will repair or replace, at its option, such defective part, provided that full information is furnished to Nol-Tec of the nature of the defect. Labor in removing and replacing parts at the installation site under this warranty, and return of defective parts to Nol-Tec's factory, shall be paid for by Buyer. This warranty by Nol-Tec does not cover any part of the system manufactured by third persons whether or not such third persons are subcontractors to Nol-Tec for this system.

If after inspection of the returned products, Nol-Tec determines that the defect is a result of misuse, mishandling, installation, abnormal conditions of operation, unauthorized repair or modification, or due to the Buyer's failure to install, maintain or operate the product incompliance with written instructions, all expenses incurred by NolTec in connection with the replac ement or repair of the productshall be for the account of the Buyer. Any product returned to NolTec for replacement shall become the property of Nol-Tec.

EXCEPT AS EXPRESSLY PROVIDED IN THIS SECTION 1, ALL
PRODUCTS AND SERVICES PROVIDED UNDER THESE
TERMS AND CONDITIONS ARE PROVIDED “AS IS”. ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, ARE HEREBY DISCLAIMED AND EXCLUDED BY NOL-TEC, INCLUDING
WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR USE, OR NON-INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS, AND ALL OBLIGATIONS OR LIABILITIES
ON THE PART OF NOL-TEC FOR DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE USE, MAINTENANCE OR
PERFORMANCE OF THE PRODUCTS AND SERVICES PROVIDED HEREUNDER (INCLUDING LIABILITY FOR NEGLIGENCE), OTHER THAN LIABILITY BASED UPON THE
GROSS NEGLIGENCE OR INTENTIONAL MISCONDUCT OF
NOL-TEC

REPLACEMENT OR REPAIR OF THE NOL-TEC PRODUCTS AS
PROVIDED ABOVE IS THE BUYER'S EXCLUSIVE REMEDY
AND NOL-TEC’S SOLE OBLIGATION FOR ANY BREACH OF
THE FOREGOING WARRANTY

. 2. LIMITATIONS OF LIABILITY . NOL-TEC WILL NOT
BE LIABLE FOR ANY LOSS OR DAMAGE CAUSED BY DELAY IN FURNISHING PRODUCTS, OR BY DELAY IN ANY OTHER
PERFORMANCE UNDER OR PURSUANT TO THIS
AGREEMENT.

IN NO EVENT WILL NOL-TEC’S LIABILITY OF ANY KIND INCLUDE ANY LOST PROFITS, LOST REVENUE, SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL LOSSES OR DAMAGES, EVEN IF NOL-TEC HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH POTENTIAL LOSS OR DAMAGE.

Nol-Tec shall not be liable to the Buyer for any claims, demands, injuries, damages, actions, or caus es of action whatsoever based on negligence or strict liability.

No claim or cause of action arisi ng from, or related to the products and services provided under thes e Terms and Conditions, whether based in tort, contract or otherwise, may be asserted (i) by any party but the original purchaser, or (ii) any time later than the date one year after the claim cause of action has accrued.

3. Acceptance/Agreement . Any acceptance of this Quotation is subject to acceptanc e of these Terms and Conditions. These Terms and Conditions (i) c onstitute the entire agreement between the parties with respect to the subject matter hereof, (ii) supersede any and all other agreements between the parties related thereto, as well as all pr oposals, oral or written, and all negotiations, conversations or discussions between the parties related to this Agreement, (iii) may not be altered, amended or otherwise modified without the written agreement signed by the parties hereto, and (iv) may be executed in two or more counterparts, each of which will be deemed an original hereof. No product or service spec ifications, or terms and conditions that are additional or contrary to the terms of this Agreement, whether contained in any purchase order or other communication from Buyer or any third party, will be cons trued as, or constitute a waiver of these terms and conditions, or acceptance of any such additional terms, conditions or s pecifications. Nol-Tec hereby rejects and objects to such additional or contrary terms, conditions or specifications

4. Orders . All orders are subject to acceptance by Nol-Tec, in its sole discretion, at it s general offices in Lino Lakes, Minnesota, USA, even if such order are taken elsewhere by any sales representative or other agent of Nol-Tec.

5. Terms and Payment . The written price quotation listed herein shall be payable in current funds of the United States, at par, at 425 Apollo Drive, Lino Lakes, Minnesota 55014, according to the "Terms" as quoted herein. No other understanding or agreements, verbal or otherwise, with respect to the price and terms of payment shall be binding on either party, except as expressly stated herein. The foregoing terms of payment apply whether or not Nol-Tec has agreed to erect said system and whether or not there is delay in erection by any person, regardless of cause of delay.Nol-Tec Systems, Inc. General Terms and Conditions of Sale Page 2 of 3 Prices on the goods covered by this Quotation are firm for 30 days from the date of this Quotation. If there is a delay in the completion of shipment of the order due to any change requested by the Buyer, or as the result of any delay on the Buyer's part in furnishing information required for completion of the order, the price agreed upon at the time of acceptance of the order is subject to change. Prices are F.O.B. carrier's equipment at Nol-Tec's factory and are exclusive of all federal, state or local taxes, and any present or future sales, use or other tax or duty that Nol-Tec may be required to collect or pay shall be added to the sales prices and paid by the Buyer.

6. Increase to Price . In the event changes by Buyer in concept to the proposed system should require additional, or modification to existing mec hanical equipment hardware or software, the price to Purchaser shall be revised accordingly.

7. Installation/Start-Up/Field Service . The above price does not include installation of the system, system start-up, or any field service, unless otherwise specifically provided elsewhere
herein or in our contract.

8. Installation Supervision Upon written request by Buyer to Nol-Tec, at any reasonable time prior to installation of the system provided by Nol-Tec, Nol-Tec agrees to supply to the installation site one installation supervisor qualified to instruct as to the proper installation of the system. The Buyer cost for this service is charged in accordance with current published rate schedule.

8A. Start-Up/Field Service and Training . Upon written request by Buyer to Nol-Tec, Nol-Tec agrees to supply to the job site, one start-up/field service techni cian qualified to instruct as to the proper troubleshooting and start-up of the system. The Buyer cost for this service is charged in accordance with current published rate schedule.

9. Drawings . Nol-Tec will deliver drawings to Buyer for approval of system prior to ordering materials and supplies, and prior to fabrication of system by Nol-Tec. Buyer agrees to either approve or correct such drawings, in writing, within 10 days after receipt thereof and return same to Nol-Tec for further processing. Nol-Tec reserves the right to gi ve Buyer notice of delay caused Nol-Tec by Buyer's failure to promptly sign and return said drawings as aforesaid.

10. Cancellations, Countermand, and Return of Goods

. Orders accepted by Nol-Tec cannot be cancelled or countermanded, or shipments deferred or goods returned except with the prior written consent from Nol-Tec's office in Lino Lakes, Minnesota, and upon terms that will indemnify Nol-Tec against all losses resulting there from, including the profit on any part of the
order that is cancelled. When Nol-Tec authorizes the return of goods, Buyer shall prepay the shipping charges on such returned goods unless otherwise expressly st ated by Nol-Tec in its written
return authorization.

11. Patents . Nol-Tec shall indemnify and save the Buyer harmless from any judgments for damages and costs which may be rendered against the Buyer in any suit brought against the Buyer on account of the infringement of any United States patent by any goods supplied by Nol-Tec hereunder (as such and not incorporated into any other device), provided that the Buyer promptly notifies Nol-Tec of the commencement of any such suit
and authorizes Nol-Tec to settle or defend such suit as Nol-Tec may see fit, and provided further that the Buyer renders every reasonable assistance which Nol-Tec may require in defending any such suit. This provision shall not apply if Buyer has furnished NolTec with the specifications for such goods, and in that event, the Buyer shall indemnify and hold Nol-Tec harmless from any claim of patent infringement. If the goods supplied by Nol-Tec are found to be infringing, Nol-Tec's liability to the Buyer shall be limited to any one of the following, at Nol-Tec's election:

a. Procuring for the Buyer the right to use the goods; orb. Modifying the goods so that such goods become noninfringing; or c. Replacing the goods wi th non-infringing goods; or d. Removing the goods and refunding the purchased price to the Buyer.

In consideration of Nol-Tec' s covenants hereunder, Buyer waives all other claims or potential clai ms for damages against Nol-Tec for any alleged or established patent infringement, and agrees to indemnify and save Nol-Tec harmless there from.

12. Delivery . Shipping dates are approximate and are based upon current and anticipated manufacturing capabilities and upon prompt receipt of all necessary information from Buyer. Delivery shall also be contingent upon receipt of materials from subcontractors. Unless otherwise agreed in writing by Nol-Tec, delivery shall occur and risk of loss shall pass to the Buyer upon delivery of the goods to the carrier at Nol-Tec's factory. Transportation shall be at the Buyer's sole risk and expense, and any claim for loss of damage in transit shall be against the carrier only. Buyer agrees to accurately check shipment upon arrival and file claim with the common carrier for any damage or loss. Risk ofdamage or loss to the system from any cause shall pass from NolTec to Buyer upon delivery to the common carrier, notwithstanding the fact that Nol-Tec reserves the right of possession and title in the property until the above price is paid in full, all as provided
elsewhere herein.

13. Force Majeure . Fulfillment of this order is contingent upon the availability of materials. Nol-Tec shall not be liable for any delays in delivery, or for nondelivery or nonperformance, in whole or in part, caused by t he occurrence of any contingency beyond the control of either Nol-Tec or suppliers to Nol-Tec, including but not limited to war, sabotage, acts of civil disobedience, failure or delay in transportation, acts of any government or agency or subdivision thereof, judicial actions, labor disputes, fires, accidents, ex plosions, epidemics, guaranties, restrictions, storms, floods, earthquak es or acts of God, shortage of labor, fuel, raw material or ma chinery or technical failure where Nol-Tec has exercised ordinary care in the prevention thereof. If any contingency occurs, Nol-Tec may allocate production and deliveries among its customers.5.147.SALE.04.30.07.01 Nol-Tec Systems, Inc. General Terms and Conditions of Sale 042407-Q Page 3 of 3 14. Titles and Possession . Title and right of possession of the property furnished to Buyer pursuant to the terms of the contract shall remain in Nol-Tec until full payment of the price according to the above terms has been made, notwithstanding the delivery of the property to Nol-Tec or to a common carrier or to other bailee for the purpose of transmission to the Buyer.

The property furnished under this contract shall not become a part of any real estate by reason of being attached thereto or installed therein or thereon. If Buyer shall default in payment, Nol-Tec shall elect to exercise its lien upon said property as provided by this paragraph and the Minnesota Uniform Commercial Code and Buyer shall be responsible for all costs and expenses associated therewith. Buyer hereby grants unto Nol-Tec a license irrevocable to enter upon any real estate owned or leased by Buyer for the purpose of removing said property, and Buyer shall be responsible for the resulting damage, if any, to real and personal property to
which it is affixed.

15. Inspection . Buyer shall inspect and test the goods shipped hereunder immediately upon installation thereof and shall, within 15 days of the substantial completion of installation, give notice in writing to Nol-Tec of any matter or thing by reason whereof he may allege that the system is not in accordance with
this contract.

If Buyer fails to give such written notice, said system shall be deemed accepted by Buyer. Notwithstanding this right of inspection by Buyer, Buyer agrees to pay the above price according to the above terms whether or not a right of inspection and testing exists pursuant to the terms of this paragraph.

16. Applicability of United Nations Convention . With regard to international sales, the United Nations Convention on Contracts
for the International Sale of G oods shall not apply to the purchase and sale of products hereunder.

17. General Provisions . The Buyer may not assign any rights to, or delegate any performance owed under this Agreement without the consent of Nol-Tec. Nol-Tec shall have the right to credit toward the payment of any monies that may become due Nol-Tec hereunder and any sums which may now or hereafter be owed to the Buyer by Nol-Tec. THE VALIDITY AND PERFORMANCE IN ALL MATTERS RELATING TO THE INTERPRETATION AND EFFECT OF THIS AGREEMENT, ANY
PROVISION HEREIN AND ANY AMENDMENT HERETO SHALL
BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS (AND NOT THE LAWS OF CONFLICT)
OF THE STATE OF MINNESOTA. ALL DISPUTES ARISING IN
CONNECTION WITH THIS AGREEMENT SHALL BE RESOLVED, IF NOT SOONER SETTLED, BY A COURT OF
COMPETENT JURISDICTION LOCATED IN THE STATE OF
MINNESOTA. The Buyer shall pay Nol-Tec all fees, costs and expenses of Nol-Tec reasonably incurred in the enforcement of Nol-Tec's right under or with res pect to this Agreement, including, without limitation, reasonable attorneys' fees. 18. Acceptance . The foregoing offer is accepted and the undersigned acknowledges receipt of a true and complete copy.

By:

___________________________________________________ (Name and Title)

For:

___________________________________________________ Buyer Name/Contract Number

Seller: NOL-TEC SYSTEMS, INC. A Minnesota Corporation

By:

___________________________________________________ (Name and Title)

042407-Q