Click here to view the detailed map of TA-10.

PRS Erosion Matrix Score Assessment Date Structure Mesa Top Bench Canyon Floor Channel Topography Explanation Ground Explanation Slope Explanation Runoff Evidence Channelized Channel Description Runoff Wetland Runoff Other Terminus Explanation Runoff Explanation Structure Run-On Structure Explanation NPDES Run-On NPDES Explanation Natural Run-On Natural Run-On Explanation ESH-18 Representative BMP Prescription BMP Description Not BMPs Sediment Comments
10-001(a) 15.6 7/23/1997   NO NO YES NO       NO NO           NO   NO   NO   D. Mays     NO  
10-001(b) 15.6 7/23/1997   NO NO YES NO       NO NO           NO   NO   NO   D. Mays     NO  
10-001(c) 20.8 7/23/1997   NO NO YES NO Just down slope of cut into base of gradual slope.     NO NO           NO   NO   NO   D. Mays     NO  
10-001(d) 20.8 7/23/1997   NO NO YES NO Just down slope of cut into base of gradual slope.     NO NO           NO   NO   NO   D. Mays     NO  
10-002(a) 26.0 7/23/1997   NO NO YES NO Just down slope from roadway. Est. cover 60% or so.  Good cover, except for several voids. Sloped gradually, but >10%. NO NO           NO   NO   NO   D. Mays   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 (V. Hesch, 4/98).  BMPs inspected: 3/31/97 (V. Hesch, 4/98) NO  
10-002(b) 27.8 7/22/1997   NO NO YES NO Site is located on the canyon floor. Some areas surrounding estimated 75-100% where the pits were located.  Approximately 25-75% (grass, weeds). Pit was in an excavated, bladed area, around the building. NO NO     Meadow Run-off, if any, terminates in a grass meadow where the old building was located. Erosion is minimal, area has revegetated NO   NO   YES   Two natural drainage onto approximate location of test. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 (V. Hesch, 4/98).  BMPs inspected: 3/31/97 (V. Hesch, 4/98) NO No BMPs recommended.  Three photos taken:  1 - looking west, 2 - looking east, 3- sheet flow.
10-003(a) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse within floodplain of canyon. Mostly well vegetated with some minimal coverage in certain locations.. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles on west end.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road on western end. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted.  BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(b) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(c) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(d) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(e) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(f) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(g) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-lope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(h) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(i) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(j) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(k) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(l) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(m) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(n) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-003(o) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-004(a) 26.0 7/23/1997   NO NO YES NO Approximately 10' NE of capped wellhead. No canopy cover. Slopes to swale E of PRS NO NO           NO   NO   NO   D. Mays   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO  
10-004(b) 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
                                                         
                                                         
10-005 27.8 7/23/1997   NO NO YES NO Above cut at bottom of gradual slope, S of firing site 10-001(c).  Approx. below point of mesa, across from last home on N Mesa. No canopy, but thick undergrowth.   NO NO           NO   NO   YES   Small swales uphill. D. Mays   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO  
10-007 59.2 7/22/1997   NO NO YES NO Located adjacent to watercourse, extent of shades;  this PRS part of 10-007. Some spots 20-75% internal to the side, the extent on the down stream edges, 75-100% and 25-75%. From old road to flat area 10-30%, next to watercourse 0-10%. YES YES Looks like natural drainage small less than 1.0 foot deep, covered with pine needles.     Channel on the outside of silt fence, discharges into main channel. Silt fence installed on the down slope of the site, some sediment accumulated on the NE corner of the site, sheet flow from site if any YES Culvert under road. NO   YES Minimal on the W end, straw bales installed. M. Alexander   Sand bags and straw bales placed up-slope for diversion, silt fence installed on down-slope side, entire area fenced and signs posted. BMPs installed 3/31/97 NO Existing BMPs prevent any additional channelization, no additional BMPs recommended, maintenance and operation of BMPs.  Three photographs taken.
10-008 31.8 10/22/1997   NO NO YES YES PRS boundary extends through both floor of Bayo Canyon and an established channel in the floor. Canopy cover consists of large pine trees.  Ground cover provided by grassed and pine needles.   NO NO           NO   NO   YES Sheet flow and drainage from surrounding area. T. Lemke     NO Area is relatively flat and is vegetated.

Established channel is approximately 6 feet wide with a sandy bottom.  The channel bottom is no more than 6 inches lower than the surrounding ground.
10-009 20.5 11/29/1997   YES NO NO NO Possibly man-made channel, old MDA.  Located within Bayo Canyon. Grasses, pine trees. Less than 10% channel bottom, channel sides more than 10%. NO NO           NO   NO   NO   C. McLean     NO Pine needles act as natural BMP).  Also not enough slope at end of channel.  Channel begins on site and ends on site.  Run-off possible on site would only be from collection in channel itself.
C-10-001 15.6 10/22/1997   NO NO YES NO Site previous soil remediation.  Located within the floor of Bayo Canyon. Thick layer of pine needles on ground.  Pine tree canopy cover.   NO NO           NO   NO   NO   T. Lemke     NO No evidence of run-on or discharge.  Thick layer of pine needles at the site acts as a natural BMP.  No visible soil.