Letters. Air monitoring networks (con't.)

Abstract

Air monitoring networksDear Sir: I have just finished the excellent article on Air Monitoring Networks (ES&T, June 1977, pp 544-549). Unfortunately, the article leaves the reader with the impression that there are only three domestic and one international firms seriously engaged in the construction of network systems. I wish to point out that Monitor Labs has built eighteen (18) telemetry network systems. Installations include:• California Air Resources Board statewide network.