shares of pembina pipeline corp ppl slipped 090 to c4428 tuesday in what proved to be an allaround negative trading session for the canadian market with the sptsx composite index gsptse falling 115 to 2043987 pembina pipeline corp closed c930 short of its 52week high c5358 which the company achieved on june 8th trading volume of 14 m shares remained below its 50day average volume of 26 m