TETRA TECH, INC.

LOWER DARBY CREEK AREA (LDCA) SUPERFUND SITE (MULTIPLE OPERABLE UNITS (OUS) DESIGN AND ENGINEERING SERVICES (DES) THE PURPOSE OF THIS TASK ORDER (TO) IS TO PROVIDE SUPPORT AND ADDITIONAL SERVICES RELATED TO A VARIETY OF PLANNED ACTIVITIES RELATE

REMEDIAL ACQUISITION FRAMEWORK - RAF, DESIGN AND ENGINEERING SERVICES - DES. THE DES CONTRACT WILL PROVIDE SERVICES TO SUPPORT EPAS CLEANUP PROGRAMS, PRIMARILY THE SUPERFUND PROGRAM. THIS CONTRACT REQUIRES THE CONTRACTOR TO FURNISH ALL NECESSARY PERSONNEL WITH THE APPROPRIATE KNOWLEDGE AND EXPERTISE, MATERIALS, EQUIPMENT AND SERVICES OR INCIDENTAL TO PERFORMING AND COMPLETING THE WORK IN ACCORDANCE WITH THE REQUIREMENTS OF THE STATEMENT OF WORK. THESE CONTRACTS REQUIRE PERSONNEL TO DELIVER THE FOLLOWING SERVICES: FIELD WORK AND ANALYTICAL SUPPORT, TREATABILITY STUDIES, REMEDIAL INVESTIGATION-FEASIBILITY STUDIES, ENGINEERING EVALUATION-COST ANALYSIS, REMEDIAL DESIGN, OVERSIGHT OR OVERSIGHT SUPPORT AND OTHER GENERAL TECHNICAL ASSISTANCE.

DES- OLD WILMINGTON ROAD GROUNDWATER CONTAMINATION SUPERFUND SITE OU-1 REMEDIAL ACQUISITION FRAMEWORK (RAF) DESIGN AND ENGINEERING SERVICES (DES)

F108 - PROVIDE RI, HHRA, FS, PRAP, ROD AND POST RIFS SUPPORT AT THE SAFETY LIGHT CORPORATION SUPERFUND SITE OPERABLE UNITS OU2 AND OU3.

MODIFICATION DES WALLKILL WELLFIELD REMEDIAL DESIGN/REMEDIAL ACTION (RDRA) OVERSIGHT / REMEDIAL ACQUISITION FRAMEWORK (RAF),

LOWER DARBY CREEK AREA (LDCA) OU1 DESIGN AND ENGINEERING SERVICES (DES) MOD 20