2007-08-29_REVISION - M1980047 (2)

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Colony Snala 0~~~ 'ro,ec; G ,-+a^.o MLR9 Permit M~Fly-0:7 Rev Aug dE 2007 2C/`fi AHai:WC Arun Sl.g„e S.rrnvy arw Raquexl Im Redaction in Atteged AUMage Ot the total permitted acreage. 1.127 acres were listed as disturbetl as of the 1982 Interim Site Plan USP), which was treated as an amendment to the permit. By the year 2000 [he total affected area was reported as t 134 acres, but d now appears that a few acres related to ongoing construction by pipeline companies near Colony's roadway easement. but not within Colony permitted lands. may nave been inappropriately counted. The original t,s27 disturbed acres was increased by 3 acres in 1987 with the addition of lne ESR Test Plots site south of the Plant Site Area 18, This area is not included to the t982 ISP amendment, which was based on the 1982 Site Disturbance Inventory, Later, in 2000. approximately 1 acre of new access road disturbance was ragweed near the southern Colony property Ilre to provide access while natural gas pipeline construction by others L•locked Colony's road easement on Unocal (now Encana) property These aduihonal 4 aces since 1982 berg Ina actual disturbed acreage total to ! t31 acres. Since neither of these nvo late adddwns is planned for release in this sabrndtal, discussion in Dns report wfl continue to steward to the original 1 i27 acres desenbea in the 1992 ISP. These later additions will then be added to the affected acreage remaining after reconcihaUOn to the 1982 ISP has Veen completed, to arrive at the new 'affe^.ted acreage' figura Thn resWts are presented m tabular form in Table t. Of ilia original 1.127 disturbed acres described .n the 1962 ISP, 170 acres were described 1n that sl:bmi7tal as already in their final reclaimed form as of completon of their consVuction, These includeU 76 acres of near vertical rock cut cliff faces associated with ilia Plant Access Road (38 ), Mme bench(14) and Firebreak Road t1), and rockfill faces such as the Mme Bench face (11j, the Plant Site's South Valley Fill (61. anq the Switchyard FJI Face (6y • ?3 acres of steep talus slope disturbance assocated with the pre-permd Pdat Mine. and • 1' acres of miscellaneous small areas where reclamation was completed upon completion of cunslruCUOn Although no additignal reGamation efforts arse no further construction activity were planned for any of these areas. the operator saw no pressing need at that time to Ualm them as completed or to stars the process of removing them from the affected area inventory In addd~on to the above described finished 110 acres. by year end 1984 another 281 acres had been reclaimed by revegetation. essentially as proposed in the ISP ezcepi for 14 acres that were not reclaimed Gut were instead stabilized Although the ma)onty of these 281 acres were too steep to avow spreading of topsoil. Colony believed these could nevertheless tie stabilized by revegelation. This s~Want,~ s alluded to in the original 1980 permit application (Exhibit E. p. E-46. E-48) Two large such :,dr,.uons to this category, totaling 66 acres, occurred rn 1984. described as loilows: • i~t acres of side slopes along the Dam Access Road (Area 8a). a large 32 acre fie slope below Uavis Falls that was regraded and seeded in 1984, wncunent a,dh Hauling material back to the Mine f3ench to backfdl the abandoned primary crusher pit Similar to the 110 acres of finished cliffs. rockfill and talus slope laces described above, there were no plans for any adddional construction m these reclaimed areas. Gut there was also no driving lone from the operator's perspeclrve to begin the process of removing these areas from the affectetl area invertory~ at that Ume. There were a few areas disturbed m t982 where the disturbance was very limited, consishny of stripping vegetation but not removing topsoil. In these special cases, temporary stabilization ragweed in the Interim Site Plan (1982 Amenomenq was achieved by simply seeding those areas with the pormanenl seed mix These areas were generally smart, varying from as small as t acre to as much as 20 acres, but t I Thr IarOe gyratory prm+ary crusnar ccncapt nail been abandoned in sammm o' 1582 m dude DI re:emly Pnr,pn vt-mina rec.far b R~.'Ikms TTw p•imary crusher pl au;avation 'nH had bean openeC in t5dt ;o eraDle wnslrudwn and mstallalion or lros Sa~.i~t; oral no :onger neeCed and tna r'atern++ IPnI hap Dean eKCava!ed was ratarnep tp Nor crusnm pd and placad as a cnnirolloa r:Dmpaclud till ,n 158:. a;bwir,0 'cr !Hal yi.Idmg or ine remmnv.g maieni~ DNioy, Dorval Fain