Shallow Subsurface Injection Testing Clause Samples

Shallow Subsurface Injection Testing. ‌ 2.9.1. Pre-Production: When pre-production test injection points are shown in the Work Order, complete a pre-production polyurethane injection performance testing program. Prior to the injection at production point locations indicated in the Work Order, determine the rate and amount to be injected to obtain the required improvement. Assess the cure rate for the proposed process by the initial completion of pre-production polyurethane injection performance testing at pre-production test injection points shown in the Plans. Inject at the pre-production test point locations using the proposed materials, injection rates, and processes anticipated for production. 2.9.1.1. To verify adequate subsurface improvement has been achieved, perform a minimum of two standard penetration test (SPT) soil borings in accordance with ASTM D1586, using safety or automatic hammer) or dynamic cone penetrometer (DCP) soundings in accordance with ASTM D6951, at locations approved by the County. After injection of the test points, locate at least one SPT boring or DCP sounding just outside the injected area and at least one SPT boring or DCP sounding centrally within the test point grid, unless shown otherwise in the Work Order. Use the same equipment for all tests. Submit the results of the SPT borings and DCP soundings, the recommended injection rate and injection cut-off criteria to the County for review and approval prior to proceeding with the production point locations. The County may require additional SPT borings or DCP soundings; the County shall fund any additional testing. 2.9.1.2. Do not adjust the polyurethane components, ratios or injection processes during production point injection without the approval of the County.