Click here to access a detailed map of TA-8

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
08-003(a) 22.3 7/24/1997   YES NO NO NO Septic tank and drain line from floor drain in old bunker. Septic tank (8-003(a)) and 8-004(a)). adjacent to roadway in front of bunker, south of bldg. 8-21. Old gravel and asphalt pad in front of old bunker.   NO NO           NO   NO Fire hydrants located east and west of site. Discharge from fire hydrants would remain on site. YES Steep slope to the north and west of the site. Storm water sheet flows down the slopes. T. Lemke     NO  
08-004(a) 22.3 7/24/1997   YES NO NO NO Septic tank and drain line from floor drain in old bunker. Septic tank (8-003(a)) and (8-004(a)) adjacent to roadway in front of bunker, south of bldg. 8-21. Old gravel and asphalt pad in front of old bunker.   NO NO           NO   NO Fire hydrants located east and west of site. Discharge from hydrants would remain on site. YES Steep slope to the north and west of the site. Storm water sheet flows down the slope. T. Lemke     NO  
08-004(b) 22.3 12/15/1997   YES NO NO NO Septic tank and drain line from floor drain in old bunker. Septic tank (8-003(a)) and (8-004(a)) adjacent to roadway in front of bunker, south of bldg. 8-21. Old gravel and asphalt pad in front of old bunker.   NO NO           NO   NO Fire hydrants located east and west of site. Discharge from hydrants would remain on site. YES Steep slope to the north and west of the site. Storm water sheet flows down the slope. T. Lemke     NO Assessment data provided by information gather from a field visit to the area on 7/24/97.

No BMPs.
08-004(c) 22.3 12/15/1997   YES NO NO NO Septic tank and drain line from floor drain in old bunker. Septic tank (8-003(a)) and (8-004(a)) adjacent to roadway in front of bunker, south of bldg. 8-21. Old gravel and asphalt pad in front of old bunker.   NO NO           NO   NO Fire hydrants located east and west of site. Discharge from hydrants would remain on site. YES Steep slope to the north and west of the site. Storm water sheet flows down the slope. T. Lemke     NO Assessment data provided by information gather from a field visit to the area on 7/24/97.

No BMPs.
08-004(d) 3.6 12/11/1997 8-24 YES NO NO NO Waste line leaving building, historically discharging to a septic tank, currently tied into SWCS treatment. Asphalt cover, or line buried under cover.   NO NO Line under asphalt cover, or still buried.         NO Buried line not exposed. NO   NO Line is covered. R. Reynolds     NO N/A
08-009(a) 17.5 7/24/1997   YES NO NO NO Storm drain inlet = 50-100m down slope from PRS 8-009(c). Combination of trees and grasses.   YES YES Storm drain.   Meadow E of S-Site Road Storm drain flows E about 200-300m from PRS to beyond Anchor Ranch Road, but does not daylight.   NO   NO   YES Natural drainage channel. D. Mays     NO  
08-009(b) 12.8 12/11/1997 8-70 YES NO NO NO Outfall approx. 40-yd northeast of building 8-70. Grass and willow trees. Outfall discharges to a gentle sloping bank. NO YES Outfall appears to be discharging but no visible evidence of runoff.         NO   YES EPA 04A 115, TA-8-70. NO   R Reynolds     NO  
08-009(c) 27.5 7/24/1997   YES NO NO NO VCP discharges on hillside above ravine. No evidence of previous flows in ravine. Ground cover primarily pine needles. Canopy includes pine and oak.   NO NO         Forest litter still present at discharge point. Appears to have been there for some time. YES VCP originates inside bldg. 8-23 (floor drain). NO   YES Site on a steep slope. Storm water sheet flows down slope. T. Lemke     NO  
08-009(f) 42.0 7/24/1997   YES NO NO NO South of building 8-22, from drainage by S gutter through culvert. Upstream of culvert: Lots of sediment in asphalt-lined channel. And below sediment due to excavation uphill from channel. Downstream of culvert: Plenty of grass in drainage swale.   YES YES Upstream: Drainage ditch w/sediment. Downstream: Grassy swale.     Swale by access road Sheet flow from building roof and from upslope carrying sediments into channel above culvert. YES Building 8-22. NO Outfall plugged. YES Upslope run-on. D. Mays     NO  
C-08-010 17.5 6/3/1999 8-1 YES NO NO NO Drum storage area near 8-1 Thick grasses with pine needles and canopy. Flat area forms natural basin. YES NO Mostly sheet flow locally.  Stormwater area drain nearby (+/- 10').   Meadow across road Culvert from area drain discharges into meadow. None observed. YES Parking lot runoff NO No operational impact. YES Slope north of site. Veenis, Steve     NO