FOI_2011-00646_Enclosure - Hanford Site

Progress Review Meeting
Page 2
WCH following up. Hydrant permit is in hand, waiting for excavation permit. Plan to perform
work on water line on an off shift work day, pushing for Friday 2/19/2010. Excavation permit is
complete. Discussed that 100-K water will be shut-off this weekend. Friday work is pending.
Further discussed backflow preventer versus air-gap installation requirements. DDI is pursuing
additional changes to the water system tie-in. WCH met with CHPRC again on 2/22/20 10. DDI
to complete system construction while new permits are pending. Decision has been made to
utilize the existing permits in place. DDI will begin to get materials on site to support installation
of water tie-in to support installation date of Friday, 3/19/2010. Work inside the fence next door
needs to be complete by the end of the weekend of the 19th so not to disrupt their work. DDI
indicated system should be operational the week of March 22. DDI waiting on materials, flow
restrictors, tanks, calcium chloride. Underground installations completed in the 1 00-K area. DDI
does not yet have parts on-site to complete the above ground installations to complete the tie-ins.
DDI to provide information/details for additional flow requests. DDI to prepare as-built
information prior to energizing system. High tank is in place and operational. DDI is having
some issues with float valve that they are continuing to work through. Getting this system
operational inside the burial ground needs to be a priority. DDI is working through a request by
Watts for additional GPM. DDI is considering bringing in another sub to complete the water
system project (4/20). DDI is evaluating a recalculation of water system requirements from Watts
and will forward to WCH after review. Watts has been instructed by DDI to continue installation
of the stabilization injection system related to the water system. WCH requests a P&ID of the
water system (4/27). DDI is finalizing the P&ID and will submit this week (5/4). DDI has run
caics on the injection system pump production and recognizes that the pump proposed by Watts is
significantly undersized. Therefore, the P&ID will not be submitted until this issue is resolved.
WCH does not have a defined injection rate for the use of calcium chloride. (5/11) The use of
calcium chloride or other soil bonding agents are a performance specification, not a specific
requirement of WCH. No change. (5/18) Injection system to be complete by Wednesday May
26, plan to demonstrate on Tuesday June 1. DDI has no plans to utilize a tank (as shown on
previous sketch) or any type of pump to increase pressure. (5/25) System equipment
configuration is complete, still need to test the remote water cannons with the current pressures.
Discussed pressure needs for operating the system, additional pumps, tanks, etc. On 5/27, system
was tested and it took 14 minutes for a water truck to fill (approximately 285 gpm). (6/1) DDI is
sending a letter to Watts to rework system for increased pressure. (6/8) DDI to submit letter,
request for clarification for intent of water supply. (6/15) No change. (6/22) WCIJ has not
received letter from DDI about water supply. (6/29) DDI states they send letter on 6/23, but
WCH STR has not received copy. (7/6) WCH received letter 7/12. WCH PM is following up
with CHPRC before responding to letter. (7/14) WCH PM followed up with the CHPRC Deputy
Fire Marshal about the permit. They hope to have updated information to us by the end of the
week. WCH discussed how using additional percentage of calcium chloride could control dust
and use less water. It was also suggested that DDI look into bringing an additional water tower
on site that could be filled at the start of the day to provide additional water. (7/20) DDI has
submitted WCH suggestions to sub-tier for proposal if there is no increase in water permitted at
the hydrant restrictor. (7/27) DDI has not received a response frm WCI on alternative
dust/water suppression chemicals or methods. CHPRC is restricting water on their site. They are
evaluating methods other than the slow fill of the basins (still wells). WCH is concerned that
WCI is allowing projects other than 11I8-K to fill their water trucks from the 11 8-K tank; it would
appear that there is enough water if more than the 118-K project is using the tank. (8/3) WCH to
provide a response to DDI by the end of the week. (8/10) WCH pushed issuing a formal
response 8/19. (8/17) WCH will provide DDI a response letter today. (8/24) DDI has received
the WCH response letter dated 8/24 and is issuing an SDR to their sub-tier. They are also looking