Exhibit 10.7(b) AMENDMENT NO. 1 TO EMPLOYMENT AGREEMENT THIS AMENDMENT NO. 1 TO EMPLOYMENT AGREEMENT is made as of this 3rd day of November, 1998 between Envirogen, Inc., a Delaware corporation ("Envirogen"), and Richard W. Schowengerdt (the...Employment Agreement • March 28th, 2000 • Envirogen Inc • Hazardous waste management
Exhibit 10.7(a) EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT is made as of this 10th day of April, 1997, between Envirogen, Inc., a Delaware corporation ("Envirogen"), and Richard W. Schowengerdt (the "Executive"). WHEREAS, Envirogen, Fluid...Employment Agreement • March 28th, 2000 • Envirogen Inc • Hazardous waste management • New Jersey
