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<br />This specification needs to be amended to read as follows: <br />"3.05 FILL PLACEMENT:... <br />"H. Drain Cover Fill ... <br />"9. CONTRACTOR shall place Drain Cover Fill at a rate such that no single <br />area of 350,000 square feet of geomembrane liner is exposed to ultraviolet <br />light for more than -I4 90 days." <br />While in fact there are as yet undocumented (to us) reports that VLDPE can remain exposed to <br />ultraviolet for periods longer than 4 months, CC&V is not in a position to demonstrate longer <br />periods at this stage in the Project. Therefore we have chosen to remain with the Gundle <br />material warranty. The modified specification will ensure adequate compliance. <br />I am again attaching a copy of the Gundle letter with this request. <br />Thank you again for your assistance in this regard. <br /> <br />Environmental Affairs <br />Attachment: a/s <br />FILE: CC&VSTIP.003 <br />2 <br />