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BENTOFIX TECHNOLOGIES , INC . BENTOFIX® MANUFACTURING CERTIFICATION CUSTOMER: GSE LINING TECHNOLOGY, INC. SHIP DATE: NOVEMBER 7, 2003 PROJECT: FORWARD LF c/o ALLIED BOL NO./NO. ROLLS: 9/14235 ORDER NO.: 28547 SP-1 PRODUCT TYPE: BENTOFIX® NWL-35 Bentofix Technologies, Inc. hereby certifies that the Bentofixe Geosynthetic Clay Liner purchased and shipped for the above referenced project does meet or exceed Bentofix Technologies, Inc.'s specifications for Bentofie. The Bentofie product has been continuously inspected for the presence of needles and is certified to be needle free. The tests listed for the bentonite component have been performed on each batch of bentonite. The Swell Index according to ASTM D5890, the Moisture Content according to ASTM D4643 and the Fluid Loss according to ASTM D5891 were tested at least once per 100,000 lbs of bentonite. The tests listed for the finished geosynthetic clay liner have been performed at least once every 3,716 sq. mt. [40,000 sq. ft.] for the Bentonite Mass Per Unit Area according to ASTM D5993 and the Grab Tensile/Elongation and Peel Strength according to ASTM D4632. The tests listed for the finished geosynthetic clay liner have been performed at least once every 18,580 sq. mt. [200,000 sq. ft.] for the geotextile components. The finished geosynthetic clay liner Hydraulic Conductivity was tested at least once every 9,290 sq. mt. [100,000 sq. ft.] according to method ASTM D5084. The Index Flux was tested at least once per week according to ASTM D5887 and is certified to meet the required specification of< 1 x 10-11m3/m2/sec. The typical Internal Shear Strength of the finished geosynthetic clay liner according to ASTM D6243 is certified to be 500 psf for specimens hydrated for 24 hrs. and sheared under a 200 psf normal stress as tested on a periodic basis. The lot and roll numbers for this project are as follows: LOT# 13110509---- ROLL# 97445, 97446, 97447, 97448, 97449, 97452, 97463, 97464, 97465---- 2 • i1 1, 1/ II . lo . b3 PAT THIFFALfLT DATE Quality Control Manger DOC.#BTI 94 REV.#01 DATE:01/15/03