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1 <br /> HYD <br /> tftumls' <br /> NTAL <br /> INC. <br /> Mr P E Copple <br /> Central California Traction Company <br /> July 12, 2001 <br /> Page 2 <br /> The additional well location will be marked prior to drilling Underground Service Alert (USA) will be <br /> notified at least 48 hours prior to any subsurface investigation A private utility locating service may be <br /> used if there are private property access problems Per verbal agreement with SJCPHS, no soil samples <br /> will be collected because contamination in the area was previously defined by the URS Greiner <br /> Woodward Clyde boring B-1 The monitoring well installation will be under the direct supervision of a <br /> California Registered Geologist(R G ) <br /> One ground water monitoring well will be installed, using hollow stem auger, in the shallow unconfined <br /> saturated zone using 2 0-inch schedule 40 PVC The monitoring well will be screened from <br /> approximately 5 0 feet above the ground water table to 15 feet below the ground water table Based on <br /> soil boring logs that defined subsurface soils 0 01-inch slotted screen and number 2116 sand will be used <br /> as a gravel pack A 10-foot cement seal will be placed on a bentonite seal The monitoring well will be <br /> capped with a flush-mounted traffic rated box with a locking cap Prior to sampling, the monitoring well <br /> will be developed using surge-block techniques Development will not occur until after 48-hours has <br /> elapsed to allow the cement seal to set The completed momtonng well will be surveyed by a California <br /> licensed surveyor <br /> Soil cuttings and ansate water will be drummed in 55-gallon UN rated steel drums that will be sampled <br /> and managed according to sample analyses <br /> • Task 2: Sample Analysis <br /> Ground water samples will be analyzed for total petroleum hydrocarbons (TPH) as gasoline and TPH as <br /> diesel by USEPA Method 8015M, benzene, toluene, ethylbenzene and total xylenes (BTEX) by USEPA <br /> Method 8020 Sample detection limits will be the same as those required for the current three on-site <br /> monitoring well quarterly sampling program Collected samples will be submitted with an appropriate <br /> chain of custody to a California accredited laboratory for analysis <br /> Task 3: Report <br /> HETI will prepare a draft written report of the findings prior to the client authorizing a final written report of <br /> the completed tasks as outlined in this proposal HETI's report will include a sample location map, a <br /> summary of the analytical data (with analytical data sheets and chain of custody forms in an appendix) <br /> and appropriate conclusions and recommendations (if warranted) A California R G will sign the report <br /> A copy of the report must be submitted to the SJCPHS in accordance with their permit requirements <br />