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13 13 <br /> 2 <br /> <br />p• 2-1 <br />r'r0 <br />r <br />014 <br />~loe <br />r~ Y <br />a <br />o <br />tl <br />~ <br />1s <br />o <br />o <br />e <br />E <br />tt <br />se <br />n 3 <br /> 2 <br />11ne <br />ra <br />1 I <br />h <br />i <br />~ <br />d w <br />11 <br />be <br />u <br />t <br />soll <br />a~ <br />bp <br />d <br />riv <br />S 54 <br /> assure protection of tM liner's inte9rityT p. 2-17 M 111ustrctlon could M hel Dful shoring hoc the pro]ect rill <br /> develop including plan and cross sectfonal viers of the solution <br />p. 2-8 The use of former production cells as rnltorlrg cells appears unties. A plan vier of the cantles and cell fields as they 82 <br /> practical and could be effects ve. The EIS should further describe relate to the location ar floc patterns of grourrter resources <br /> hw this rill bE done. EPA suggests Nat consideration be given to could alw be useful. <br /> using these cells to rnitor the lover aquifer ar posslDlY rithin 27, <br /> the solution cavltfes theosel ref. There needs to be further 28, p. 2-21 The ~ItigaLlon propord by 8U1 1n section 2.1 does not adequately <br /> lndlcatlan of the rthod proposed for aonf Loring Ne Integrity of 29. eddress th! pg7ntl sl !or br!:x rvernt fq:o LAa :nmiar space. <br /> '.e and Seireen ism i2 i/1 into borehole and the R 5/B inch caslny. 49, EPA aKy rcgUfrc the applicant to ands fy its Dian for rcnanical <br /> The docWent fndlutes that the applicant mould report rater goal ltY 56 Integrity to hold wfficfent air pressure at tM surface to rlnpln 87 <br /> nonitori ng on a yearly basis to EPA. EPA regulations for Irt]ectlon the ilquld/afr Interface in the annular space belw the dissolution <br /> for the purpose of alneral eztrcctlon (Class II[ cells) require surface. EPA oar Is of tM opinion Lhat the surface pressure <br /> reporting on a quarterly basis [10 (7A 116.]3 Ic)]. criteria for shutting • cell 1n needs to be esLallshed suth tMt <br /> the liquid/air interface does not esterd above the ba the R-6 <br />p. 22 The apptiunt proposes U aswrc aecMnlcal Inte9rlV of the zone. <br />~ <br /> inJectlon cells by prcswring up the annular space betreen the 8-5/8 ~ <br /> inch casing and the 5-1 /2 Inch prruct/on Pipe, using nr. The p. 2-25 It 1s rtad Nat consideraDla addltlonal air qudity controlf ~ ba <br /> pressure rill De rlnUlnM ^t 800 psi gauge. If the pressure drops necesary for tM SOO,ODD TPT alternative. Prcsraably such rasurcs <br /> belor 700 Dsl, Ne cell rill De taaen out of service. The proposed could be needed by the applicant tq assure caupllance rIN Che <br /> plan ry not be adequate to assure flat brine rill rt cove Into tM Class II Hr quality Idcrcrnts order the Clean Air Act. Addltlorl <br /> annular space. Assuaing Nat the brine has a denslb of 1.2, the 87 •/r quall~• control Reasures ry also b necessary for the <br />N production cell rill bare • prcswrc of abort 1000 psi at the base proposed action if EPA coMludetl trc~ its 'igNSM restern states 2, <br /> of the 1900 foot casing. This could allot brit to eaterd into the acid deposition Imestigatf ohs that adtlltlor ~~SUlfur and nitrogen j <br /> annular space about 375 feet. This point Is above the 8-Groove. if oxide controls arc necessary U assure protection of the air quality <br /> Ne aft pressure at the surface dropped to 700 Dsi, tM brine color related values of PSD Class I areas. A brief rntlM of EPA's <br /> could ettentl up the annular space W a point above the A~,roore. current acid deposition imesttgatton should be included in the <br /> final E[S and deference to the State of Colorer and FPA 1n <br />p. 2-8 The section on Lhe aPDl tcant's wnl Coring for aa!cMnlul lntergrlty lrplernti ng possible further controls on sulfur and nitrogen ozides <br /> of the relic does Trot address potential fluid rrernt through noted accordingly. IROte: The Colorado pep+rtaent of 1lealth, Alr <br /> channels ad]acent to Ne veil bore. Such a detar+fnatlon oust be quality Control Division, recelre0 partial delegation fror EPA Tor <br /> rode, accortling to UIC regulations, prior to corencernt of gg the PSD progra~ on SeDteaber 9, 1986.) <br /> 1n]ection. Tro rthods, rhlch are approved of by EPA under Ne UIC <br /> progren, are not se logs and tesperature logs [IO fFR 116.9(3)Ic )]. p. 2-35 The EIS concludes that under the proposed action groundrafer prality <br /> could not be st gnl Tlcantly tapacted by direct contaninatfon partly <br />p. 2-8 Atlditt onal dlLails are needed on the viii Dle point borohole because the area of the base of the grourrater syster In contact <br /> eztensdaeter design and instal lotion. Yhy arc surface rnurnts riN Ne amine represents only one percent of the total area of the <br /> Installed to check for subsidence but not rlthtn first 1300 feet of aquffer syste~ in the Plceance Basin. It 1s possible Nat attire 56, <br /> the surface? The subsidence rnltoring progrr ry rt accaaglish 46 dl:tolutton of rcholite /s occurring over a sriler portion of the 77 <br /> Sts ob]ectt re of determining the extent of rock (racturi ng (and basin rather than, as suggested, the entire basin. If so, then the <br /> hence aquifer lnterconnectlon) betreen the solution cars ties and Ne lrrorcased dissolution as • result of this action could produce an <br /> surface unless add) ttonal rnrents are esLblished. lspact on groundraur quality dt (ferent fror the areal proportional <br /> rcLttonshtp. <br />p. 2-9 1br nil the aPPlicant assure and rnitor the rib pillar dlrnslan <br />j9 <br /> of 20 feet? Strength tests here been ron on the nahcollte rterlal D• 3-12 Based upon a report by Yrlght Yater Engineers, the EIS indicates <br /> ar should De sumnarl zed here. Nat the hydraulic head difference In the well field area Is froe <br /> 1 to 10 fee[. [[ needs to be esta6l lthed that the cell caapletions 55. <br /> storing this difference in head rerc such that the upper and lacer 78 <br /> zones rerc caopletely isolated then the head differences were <br /> rasured. <br />