COMPLIANCE INFO_1970-2012 - Laserfiche WebLink

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SURFACE WATER SAMPLING: Three locations for surface water sampling are nominated in order to establish current surface water quality. The location of these Sites is shown on Figure 3. Sites CSW-2 and CSW-3 are located off- site where Trapper Slough intersects with Empire Cut and Middle River respectively. These samples are intended to represent the typical background quality of the delta water in the general vicinity. Site CSW-J is located in Whiskey Slough immediately adjacent Arcady's Mud Disposal Site. Sampling of the surface water will consist of grab samples. Samples will be collected in three bottles as follows: 1) A one (1) liter polyethylene bottle left untreated, 2) A one-half (1/2) liter polyethylene bottle treated with HNO3 to a pH of less than 2 (for metals) , & 3) A one-half (1/2) liter polyethylene bottle treated with H2SO4 to a pH of less than 2 (for COD) , All samples will be iced and quickly sent to the laboratory for analysis in time to meet all required holding times. Field measurements will be taken for temperature, ph, and specific conductivity and recorded on Form $W-1. Laboratory analysis will be run for the constituents and by the methods listed on Form SWANAL. Each sample will be accompanied to the laboratory by Form SWANAL and a Chain of Custody record. SOIL SAMPLING: - On-Site Soil samples will be taken from the location of the earlier borings numbered B-7, B-10, and *B-11 on Figure 1. Where-ever possible these samples will be taken from a backhoe excavation as follows: -1) A composite sample of the waste material from the surface to 6 inches above the base of the drill muds; -2) A composite of the lower 6 inches of the waste material immediately overlying the basal soil. -3) Approximately 2 feet below the base of the waste pit taken by vibra-coring a small core of the underlying soil from the base of the backhoe excavation. Field logs for each excavation will be made by a geologist, and field measurements for pH will be made. Samples will be taken from the cleaned walls of the backhoe excavation using stainless steel pick or shovel, placed in a stainless steel bucket, homogenized and split into replicate samples. Wherever possible sufficent sample will be taken to allow for both check analysis and future analyses such as CAM related testing. The samples will be placed in plastic sacks (for the basal soil samples a sealed brass tube for hydrocarbon analysis will C 2 CON WIt FAMRONM9WAL MMAGEMENT COMP -C I - r- a 1 1-4 --A 9 -=- — — — . — — i