WORK PLANS - Laserfiche WebLink

Home Browse Search

No monitoring or investigative work has been comp eted at the site. The full delineation and extent of the contamination or the impact on groundwater has not been completed. There is a domestic well for the property located at the nortl iem end of the maintenance shop. The domestic well is approximately 250 feet to the north/ ortheast of the previous UST's location. 2.0 INTRODU TION SOIL BORING WORKPLAN /TEMPO RY MONITORING WELLS In a team effort Del Tech Geotechnical Support (Del-Tech) and Geological Technics Inc. has been retained by Ted Peters Trucking to prepare and implement this workplan. This workplan is designed in scope to investigate the site, evaluate d identify the extent of the subsurface contamination generated by the gasoline underground storage tank previously located at the site. Don Light, Engineering Contractor #657366 of De -Tech will be Project Manager and Ray Kablanow, PhD. R.G. #5234 of Geological Tech fics. will be the supervising Registered Geologist during all of the activities of this modified workplan. The original "Scope of Work" was presented on June 29th, 1998 for a limited assess ent, however the local regulatory agency SJPHD has requested a more in-depth assessment tha i what was originally proposed. This new modified workplan addresses all of the additional tasks requested by this agency. 2.1 Proposed Investigative Actions This workplan is being presented as a continued step towards the goal of achieving a County- approved site closure at Ted Peters Trucking (Man eca facility). Specifically, this workplan addresses the installation of(5) soil borings to approximately 10 to 15 vertical feet and collecting (5) grab water samples through a hydropunch devic from the bottom of each of the borings. (See the attached site sampling map) The primary go is to determine the impact and extent of the vadose zone and first water interface. Additional y, the center soil boring (in the middle of the previous gasoline UST location), will be advance down through the upper primary vadose and saturated zone until a naturally occurring geologi formation is encountered that will act as a barrier between the primary and secondary aquifers, as determined by the on site supervising geologist. A soil sample will be collected from the k,wer naturally occurring soil formation and then a hydropunch water sample collected five feet eyond that point of the secondary barrier. This task will be completed with the goal of determining the extent, if any, of the vertical migration of the contamination plume. Contingent Ypon completing this preliminary soils and groundwater assessment, the full extent of any possibID groundwater contamination plume would be addressed in a future workplan, if so required. TED PETERS TRUCKING 1 MAI FIECA WORKPLAN 2