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CONTRACTORS QUALITY ATROL REPORT (QCR) SUBMIT DAILY TO TH EPRESENTATIVE DAILY LOG OF CONSTRUCTION - MILITARY l REPORT NUMBER 404 PAGE 1 PROJECT DATE TO -0007 Remove 2 UST's. Install 1 AST 11 Jun 2001 DDJC-Sharpe Site. CA CONTRACT NUMBER DACW05-00-D-0008 CONTRACTOR (Or hired labor) 1. WEATHER Geofon Inc_ No Interruption. No Precipitation SUPERVISOR Temperature Min 68F Max 85F 2. QC NARRATIVE(S) Subject: General Comments: Geo -fon crew arrived on site at 0600_ We began washing out the UST at 0630. The Evergreen Env_ vacuum truck arrived at 0730. A total of 75 gallons ofrinsate and sludge was vacuumed. Fred Martin and Don Valentine arrived on site at 0800_ I reviewed all procedures with them. The dry ice arrived at approx 0800. The dry ice was placed into the USTs at approximately 0830_ LEL and 02 readings were taken at 0945 hrs. LEL was O and 02 was 12 on both of the USTs_ Another reading was taken at 1000. LEL was 0 and 02 was 3%_ The manifest was signed by Jeffery Grady (DDJC Env. Office) at approx 1000 hrs_ ECI trucks were on site at 0800 hrs_ I called the crane company (Thompson & Rich Crane Services) at 0900 hrs. The 70 ton crane that was ordered broke down. Arrangements were made to get a 200 ton crane to the site. I met with the county representative (Alison Youngblood) at 0900 hrs_ II told Alison of the crane situation_ I received a phone call from TRC informing me that a crane would arrive at approximately 1000 hrs_ The crane arrived at 0930. Good timing. The crane set itself up for a self check_ An inspection of the crane was made at this time by Fred Martin and Robert Castaneda. All checks were good_ The crane set up on the Northwest end of the UST. The lowbeds were to backup under the UST once given the ok. Other representatives on site included Maurice Benson, Dan Beever and Jeffery Grady from the base. Don Valentine and Fred Martin from the COR. Allison Youngblood from the County. Tasawwar Khan, Robert Castaneda. Jose Jimenez. Mark Swindle. Tariq Sharkoo, and Kuleib Al-Shurei from Geofon Inc_ and Sree Akkenbally from Alterra Consultants to do the sampling_ The 'first UST was lifted at approximately 1007 hrs_ The UST was intact and free from any damage_ The UST was manufatured in the Stockton Manufacturing Company_ Both USTs were double walled steel tanks_ The pea gravel was removed from the bottom and then loaded onto the lowbed. The second UST was loaded at approximately 1040_ Condition was good. no noticable damage_ Good job. The crane truck left the site at approximately 1100 hrs. The manifest for the USTs were signed by Jeff Grady_ The USTs left the site at approximately 1130 hrs. The tank and county referance numbers were painted on the ends of the USTs prior to demobilizing. Sampling began at approx_ 1120 hrs_ Two samples were taken from underneath the pipeline locations_ There were 6 samples taken from the stockpile. These samples were taken under the direction of the County representative. We were not able to get the necessary core samples because of the unstable walls. An attempt was made to get to the west perimeter part of the concrete pad but because of unstable soils we were forced to .quit. A water main was the main concern on the west perimeter of the excavation_ There were obstacles at all four sides of the excavation. After intensive discussion it was decided that we would need to backfill the excavation and request a modification for a boring machine to complete the sampling. All parties were in agreement. Because of the instability of the soil backfilling of the excavation would take place immediately_ I have enough faith that the excavated material results will come back clean. We will therefore use this material for backfill_ We will then place enough base material to remove the hazards from this excavation. The samples were taken by Alterra Consulting to the Fed ex in Manteca at approx 1500 hrs. All samples were immediately placed in an iced container. The county and COR