GENERAL41197 - Laserfiche WebLink

Home Browse Search

-I~- The soils found in the permit arez are described in section 2.04.9 of the permit application. 'Three soil types occur within the proposed permit area as shown on map 4 oC this report. 1'he soil types are Louviers-TravessilLa Rock Outcrop Comple.~c (LT~, Manzano Loam, (TPI) and the },ouviers-Travessilla Complex (LTE). Ninty-five percent of the area to be disturbed by the mining operation is in the LTE complex where three soil samples were taken. The soil samples were analyzed and no limiting factors were identified. 'Che other 5% of the area to be disturbed is composed of LT and TPl where no soil samples were taken. In order to provide adequate soil baseline information the following stipulation is necessary: Stipulation No. 2 a 'C}IE APPLICAiIT ifUST SAMPLE M'D eV~LppYZ~P. T} E SOIL TTPES OF P1AZ:'1N0 LOM1, (TTf) AND LOIJVIERS-TRAVESSILLA~Z~UMPL~''.1tY~T' ). THE SOILS }P:PORA1ATfUN P}U8T INCLUDE DEPTH OP SOIL HORIZONS, AND M ANALYSIS OF THE FOLLOFIINC PARMIETERS IN ACCORllANCE WITH RULE 2.04.9: pll, ELECTR000NDUCTIVITY, SAR, TEXTURE, PARTICAL SIZE ANALYSIS, SELINIUM, PERCENT ORCA.NIC PSATTER, AND SATURATION PERCENTAGE. THE INFORitATION MUST L3E PROVIDED TO THE DIVISION WITHIN 6 MONTHS AFTER PERI•iIT ISSUANCE. -~~j 'Che vegetation field work conducted in the permit and adjacent areas is Found in section 2.04,10 and on map No. 5 of the permit application. 'fwo natural plant cotmnunities were identi.Eied: 1) grassland and 2) pinon- juniper. The gently sloping portions of Che permit area are characterized by a diversity of grasses, (orbs, and low shrubs (grassland). 1Jhereas, the steeper slopes have a cover cf. pinon and juniper interupted by decidious shrubs (pinon-juniper). None of the species identified as rare or endangered were observed in the permit area during vegetation, data collection. Premining and reference areas were sampled in the summer oC 198L. Determination of sample size and similarity were derived using the Office of Surface Ptining guidelines. °A Survey of Techniques for Measurement of Herbaceous and Shrub Production, Cover and Density, on Coal Lands in the F'est." Results of the vegetative sampling of cnver, composition and productivity are as Follows: Cover(%) premine reference ~ 2 Plant Density (stems/100m ) Production ( (S '-:m ) premine Grassland 36.64 35.51 145 Pininr juniper 8.29 10.14 5G reference premine reference 12^_ ]0.8 15.4 62 .164 .247 ~rnnpari:;ons between reference areas and pr erring aruas were made and a "t" test statistic performed. There coos a statistical difference for cover and production on the pinon-juniper community and for production on the grassland communit}'. T.n each case where this difference ex isCs, the reference areas contained the hither values. 'therefore, the Division will accept these standards (or Enturc reference to determine revegeCation success.