PERMFILE49711

• Permit No: M2005066
• IBM Index Class Name: Permit File
• Doc Date: 4/6/2006
• Doc Name: Adequacy Response
• From: Banks and Gesso LLC
• To: DMG
• Media Type: D
• Archive: No

li-JAN-2006 ~1:76 FROtf•Cosonde Dwuioe of Ylnpolt i ssaicsr •1COIt32t:JS T-102 N.e]!/0:/ f-at
6,4.7 E\•TE]E3I1' G - 1t';ter Info
3. The ~iiae and Rcclamanu^ Plan ;daps show the locations of five (5) groundw•atcr monitorurg
wells and the approxitna[e location of the slurry wall surrounding the Phase 2 ~ 3 Areas. Piease
clarify the minimum distance of the moaimring wells from the slum• wall. Please respotrd.
4. T'he Division has requested that the Applicant proe•ide basoliae w•uer level data alrtiady
collected. in addition, the Applicant will need to demonstrate how they will provide five (5)
quartets otbascline w•ata level data from the monitvriag wells prier to exposure oCgrouadwata
as the R'attrnber, West Pit. If S quartets of data has not already bern collated, the Applicant
may comma to sampling sad submittal of such data prior to exposure of groundwater at 'uc site.
Funha, the Applicant wi I) need to describe how the basolrae data collected from the 5 wells w iU
be synthesized to establish baseline groundwater elevation(s) prior to exposure of grourtdwata at
the site. Please respond.
5. In confotmaacc with Rulc 3.1.6(1), please quantify the maximum pumping rate and dw•ation
o[ primping expected for de-watering activities in the l0•acre Phase l Area; and qumtify the
horizontal and vertical extmt of drawdown expected from dc-w•atcring activities at the time of
maximum excavaaon. Lt addition, the Division requesu that the Applicant provtdc a
rcpRSmtativc cross-sxtional diagram that shows the Phan 1 Pit at maximum excavation, static
groundwatu level and exported drawdowt>, and location of any well or gmundwata user within
the radius of drawdowa Finally, baud on the results of the drawdown analysis, pleau• provide
a !v$p or Exhibit which shows the leeation(s) of all groundwater users within the ndiw of
expocted drawdown during a time of maximum dutu:bmce. The tilap or Exhibit should also
include sll available dau on each well such u well completion, well type, well depth, well
registration number, pumping rate, baseline water level, etc. Plcaae respond.
6. In accordance with Rule 3.1.6(1), please provide an assessmau of possible hydmlvgic impacts
to the Bri r~tvn Ditch based on planned de-wetoring activities at the ~Vattrnbag West Ptt
information to he included in the assusmmt should include, but not be limited to tl:e fvlowing
• Ownership of the ditch.
• Is the ditch liaod or unlined?
• R'hat is the annual Qow regime of the ditch?
• Is the diuh hydrologically corrected to the shallow alluvial aquifer'
• Average seepage losses in the reach extending from WCR 4.5 to R'CR fi.
• Schemazic sllowvrg the eicwatioa of the ditch, ditch invert, ditch water level, ground
surface elevation at Phase L, and groundwater elevation at Phuc 1.
~. In accordanee with Rulc 6.4.', (2)(b), please characterize the shallow alluvial aquifer end
include a discussion of the direction and rate of groundwater movement in the Watteaherg 1~'at
projat area and surounding area Pleau respond.
8. In accordance with Rule 6.4.4(f)(i), please verify the maximum depth of excavation and the
substrate at the pit borom, ie: shale, clay, clayatone, sandstone, at. In addition, please provide a
tepresentaave cross-sectional diagram which shows the width and depth of slum ual!