Wal-Mart Watch: Wal-Mart prepares to invade West Haven: Retail giant Wal-Mart is negotiating with the city to build a discount store on Sawmill Road, sources confirmed Wednesday. Wal-Mart is proposing a 142,000-square-foot store on a 20.2-acre site north of Sawmill Road, according to sources close to the negotiations. Wal-Mart spokeswoman Mia Masten confirmed the retailer is exploring the market for a store in West Haven but declined to say whether a deal is pending. "We've been exploring the market for a couple of months," she said. "We've not zeroed in on a specific spot." However, sources said Wal-Mart sent a letter to the city indicating its preference to build a store on the Sawmill Road site. Wal-Mart is not planning a superstore, which includes a full grocery, the sources said...There are Wal-Mart stores in New Haven, Hamden, Derby, Shelton, Guilford, Branford, Old Saybrook and Wallingford. Wal-Mart Stores Inc. is the world's largest retailer, with $244.5 billion in sales in the year ending Jan. 31, 2003. The company, based in Bentonville, Ark., has more than 1.3 million employees worldwide and 4,300 stores, 3,200 in the United States.