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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
16-003(a) 55.5 8/22/1997 16-410 YES NO NO NO Culvert on top of mesa discharges directly into Water Canyon, about 200' of CMP. Rock, vegetation. Over cliff into tributary of Water Canyon. YES YES 12" CMP.       Discharges onto bedrock. YES   YES EPA 05A053 TA-16-410 NO   S. Veenis     NO  
16-003(b) 33.7 12/5/1997 16-400 YES NO NO NO Sump and outfall on south side of TA-16-400.  PRS boundary extends to man-made channel west of 16-400.  Deleted NPDES outfall EPA 05A063. Ground cover.   YES NO         Rill erosion from storm water run-on to PRS boundary. YES Run-on from adjacent roadway to asphalt areas outside the HE area. NO   NO   T. Lemke     NO Outfall is no longer active.
16-003(f) 8.8 9/22/1997 16-304 YES NO NO NO Two inactive HE sumps asociated with Bldg. 16-304.  Outfall south of Building 16-308. Eastern corner of building - moderate vegetative cover. Gentle slope up next to building. NO NO           NO   NO   NO   R. Reynolds     NO Sump surrounded by concrete and covered with lid.
16-003(g) 3.6 2/24/1998 16-306 YES NO NO NO Two plugged sumps on east side of Building 16-306.  Both look the same, so there is only one photo. 100% asphalt. Flat. NO NO No run-off potential.         NO "All operations will be conducted on a dry sump basis." NO   NO   D. Mays     NO Not on water course list, which is appropriate (no erosion potential).
16-003(h) 29.1 8/22/1997 16-430 YES NO NO NO 16-003(l) are HE sumps

16-003(h) are the associated outfalls
drainage has dense vegetation   YES YES discharge from sump to PVC pipe and into settling basin which overflows into channel Water Canyon bench   flow doesn't appear to reach the canyon   YES  asphalt channel into ditch YES  HE outfall 05A071 YES Upstream flow from north of building S. Veenis Should reconnect PVC pipe to sump outfall PVC pipe is disconnected from western most sump- settling sump is working NO  
16-003(i) 3.6 9/5/1997   YES NO NO NO Sump next to rest house (TA-16-265) west of TA-16-260. Sump covered and surrounded by asphalt.   NO NO           NO   NO   NO   T. Lemke     NO  
16-003(j) 17.5 9/5/1997   YES NO NO NO Drainage ditch adjacent to the roadway on the south side of Building TA-16-260. Channel filled with grass.   YES YES PRS is man-made drainage channel.   Mesa top SE of TA-16-260 South of TA-16-260, run-off flows through a culvert under the roadway and discharges onto the mesa top.   YES Roadway drains into channel. NO   NO   T. Lemke     NO Heavy vegetation present in channel and at discharge point.
16-003(k) 38.6 11/9/1998 16-260 YES NO NO NO 16-003(k) consists of 13 HE sumps, their drain lines, the outfall and the associated outfall 16-021(c) located behind 16-260. Sumps and trench are covered with iron sections and are both concrete lined. Trench and sumps located behind building 16-260 are located in flat area. YES YES Discharges from sumps and trench flow directly onto 16-021(c) drainage.  See site assessment for 16-021(c) for details. Water Canyon.   Flows discharge directly into tributary of Canon de Valle.  See 16-021(c) site assessment for details on the impact of surface water. YES Run-on entering into trench from storm events and parking lot behind 16-260 create run-on problems for 16-021(c). YES Inactive HE outfall, formerly NPDES 05A056. NO Upstream flow from north of Building 16-430. S. Veenis   Sandbags provide for run-on diversion NO Sandbags are disintegrating in places.



Site was re-assessed because the original assessment was performed on the wrong location.  The original assessment was completed on 8/22/97.
16-003(l) 29.1 8/22/1997   YES NO NO NO 16-003(l) consists of HE sumps; 16-003(h) consists of associated outfalls. Drainage with heavy vegetation.   YES YES Discharge from sump to PVC pipe and into settling basin which overflows into channel. Water Canyon.   Flow does not appear to reach canyon.   YES Asphalt channel into ditch. YES HE outfall, EPA-05A071. YES Upstream flow from north of Building 16-430. S. Veenis   PVC pipe is disconnected from western sump.  Settling sump is working. NO Should reconnect PVC to sump outfall.
16-003(m) 3.6 8/22/1997 16-380 YES NO NO NO Sump and outfall pipe. Enclosed within concrete, asphalt covered parking area. Flat area near building 16-380. NO NO Discharge from outfall turns into PRS 16-030(g).         NO   NO   NO   S. Veenis   Straw bale check dams within drainage below fish ladder NO  
16-003(n) 25.0 8/29/1997 16-342 YES NO NO NO Outfall adjacent to road, north of 16-342. Pine needles, very little vegetation. Steep incline leading from roadway. NO NO           YES Roadway rill discharge directly onto site. YES EPA 05A062 TA-16-342 YES   R. Reynolds     NO  
16-003(o) 27.3 8/29/1997   NO NO YES NO "Fish ladder" aeration flume from Building 16-340 into tributary of Canon de Valle. Thick vegetation - grass, reeds, canopy cover.   NO NO           NO   NO EPA-05A054, TA-16-340. NO   D. Mays Requires repair at 80 degrees in flume, at base of hill, to prevent constant leak.   NO  
16-003(p) 3.6 11/24/1997 16-340 YES NO NO NO Southeast of Building 16-340, in abandoned testing facility. Asphalt, sage brush, concrete sump.   NO NO           NO Operations discontinued NO   NO   D. Mays     NO Assessment data provided by information gathered from a field visit to the area on 8/29/97.
16-004(a) 31.0 8/29/1997   YES NO NO NO Old waste water treatment plant and sand filter/drying bed. 16-004 sites - drying beds/sand filter 100% exposed but beds are completed bermed and contained.  16-029(h) in the outfall from above process. a)  16-004 sites.

c)  Outfall steep side descending into water canyon.
NO NO           NO   YES EPA 555035, TA-16-STP; inactive sanitary outfall 035. NO   R. Reynolds     NO  
16-004(b) 31.0 8/29/1997   YES NO NO NO Old waste water treatment plant and sand filter/drying bed. 16-004 sites - drying beds/sand filter 100% exposed but beds are completed bermed and contained.  16-029(h) in the outfall from above process. a)  16-004 sites.

c)  Outfall steep side descending into water canyon.
NO NO           NO   YES EPA 555035, TA-16-STP; inactive sanitary outfall 035. NO   R. Reynolds     NO  
16-004(c) 31.0 8/29/1997   YES NO NO NO Old waste water treatment plant and sand filter/drying bed. 16-004 sites - drying beds/sand filter 100% exposed but beds are completed bermed and contained.  16-029(h) in the outfall from above process. a)  16-004 sites.

c)  Outfall steep side descending into water canyon.
NO NO           NO   YES EPA 555035, TA-16-STP; inactive sanitary outfall 035. NO   R. Reynolds     NO  
16-004(d) 31.0 8/29/1997   YES NO NO NO Old waste water treatment plant and sand filter/drying bed. 16-004 sites - drying beds/sand filter 100% exposed but beds are completed bermed and contained.  16-029(h) in the outfall from above process. a)  16-004 sites.

c)  Outfall steep side descending into water canyon.
NO NO           NO   YES EPA 555035, TA-16-STP; inactive sanitary outfall 035. NO   R. Reynolds     NO  
16-004(e) 31.0 8/29/1997   YES NO NO NO Old waste water treatment plant and sand filter/drying bed. 16-004 sites - drying beds/sand filter 100% exposed but beds are completed bermed and contained.  16-029(h) in the outfall from above process. a)  16-004 sites.

c)  Outfall steep side descending into water canyon.
NO NO           NO   YES EPA 555035, TA-16-STP; inactive sanitary outfall 035. NO   R. Reynolds     NO  
16-004(f) 31.0 8/29/1997   YES NO NO NO Old waste water treatment plant and sand filter/drying bed. 16-004 sites - drying beds/sand filter 100% exposed but beds are completed bermed and contained.  16-029(h) in the outfall from above process. a)  16-004 sites.

c)  Outfall steep side descending into water canyon.
NO NO           NO   YES EPA 555035, TA-16-STP; inactive sanitary outfall 035. NO   R. Reynolds     NO  
16-005(c) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-005(d) 10.5 8/8/1997   YES NO NO NO See Photo (16-27) Heavy grasses with building on site.   YES NO Gentle swale run-off to SE   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO  
16-005(e) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-005(f) 31.8 6/20/1999 16-260 YES NO NO YES Former septic system removed in 1965  Location identified in the OU1082 Work Plan Addendum 2 1995 shows SWMU located on mesa top.  Note that the SWMU is located within the boundary of MDA R but did not drain into main MDA R drainage channel. Little vegetation in bottom of channel, moderate coverage on mesa. Mesa top mostly flat, increase sloped drainage into canyon. NO NO        Runoff terminates into Canon de Valle below MDA R. Significant erosion along the sides of the channel and down the slope to the canyon bottom. YES Runoff from parking lot/building may cause sheet flow across the site. NO   NO Sheet flow from surrounding area. Veenis, Steve Repair damaged channel and stabilize channel sides with vegetation and riprap.  Flow dissipation or diversion would reduce impact to canyon.  These recommendations are for MDA R work.   NO 4/98: Erosion exists, potential exists for increased erosion damage.  Upstream from 16-260 outfall area +/- 1/4 mile.  Site re-scored to reflect the entire PRS boundary and to be consistent with PRS 16-005(f) which bisects the MDA from top to bottom.  The original assessment was performed on 09/05/1997.                6/99: Site re-evaluated based on new SWMU location (see site setting explanation).  16-005(f) did not drain into the main channel dissecting MDA R, it drained to the east of MDA R.  NFA of 16-005(f) approved by NMED 12/23/98.
16-006(c) 49.5 2/4/1998 16-370 YES YES NO NO Concrete septic tank w/ associated drain line which discharges at canyon rim +/- 300' south of tank through 4" VCP  exposed volcanic tuff, grass and pine needles  gradual slope increases to the south and eventually into Water Canyon YES NO  runoff from site is mostly sheet flow.  At outfall, a small/short channel formed as a result of past discharges near mesa edge. tributary to Water Canyon    Sheet flow run off flows onto bench setting to the south  rills have formed on supper slope west of 16-370.  Likely due to an asphalt lined channel which diverts parking lot runoff from the north of building onto slope. YES   Parking lot run-on form north of 16-370. NO   NO   S. Veenis Investigate plugging or re-routing asphalt channel run-on An earthen berm located at the southwest corner of 16-370 impedes run off to the lower portion of the PRS. NO Original assessment 8/22/97

Part B revised 1/12/98 due to SWAT meeting

Part B revised 2/4/98 due to inconsistencies in completion of RFI Report for this site.  Other local PRS were separated and assessed on their own.
16-006(d) 37.3 8/22/1997   YES YES NO NO Drainage swale adjacent to site.  Septic with outfall pipe. Grass, pine needles, ponderosa canopy. Gradually sloped to steeper area. YES YES Vegetated swale.     Filtrates before reaching Water Canyon.   NO   YES Septic outfall. YES Swale. S. Veenis     NO  
16-006(f) 14.0 2/4/1998 16-370 YES NO NO NO  Active septic system (SF89031R?) associated with building 16-370.  Building is currently inactive.  Rock, grass, pine needles   Sloped area west of 16-370, flattens out near tank site. NO NO           NO   NO   NO  Berm above tank, impedes site run-on S. Veenis   Earthen berm above PRS, impedes run-on to site. NO Original assessment 8/22/97.  Part B revised 1/12/98 due to SWAT meeting; score changed from 47.2 o 14.0.  Part B revised 2/4/98 due to inconsistencies in completion of RFI Report for this site.  Other local PRS were separated and assessed on their own.
16-007(a) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to the area on 9/22/97.
16-009(a) 12.7 10/20/1997   YES NO NO NO Area defined as soil contamination area (16-034(h) and (16-034(j)) Thick grass cover in meadow. Gentle slope of area leads east. YES YES Area under power line defined with natural channel-draining to east.  Some evidence of runoff exists from heavy rain.   Meadow Runoff does not appear to continue east past Anchor Ranch road. Some evidence of ponding and drainage from low lying area. NO Localized drainage. NO   NO   R. Reynolds Some form of contamination, possibly Uranium, was recently unearthed by trenching crew.  Site has not been cleaned up.  Recommend clean up and posting of the site.  Trench was at one time covered with plastic, which has now blown off and is no longer effective.  Note:  Site apparently was posted but barrier rope is laying on the ground with "Notice-Controlled Area" signs laying in grass, not attached to rope. 6 straw hay bales placed in drainage area.  Recommend upgrading hay bales to silt fence due to the nature of contamination. NO 1.  Bales are not staked down or held in place.  Drainage area does not produce large amounts of runoff.

2.  Could possibly be breached.
16-010(a) 38.4 7/25/1997   YES NO NO NO South of MDA-P- Sparse vegetative cover.   YES YES Erosion particularly noticeable along the fence line west of 16-010(a).   Asphalt swale and road bed Majority of run-off from this site follows road bed down to Canyon de Valle. Eroding down to tuff rock. NO   NO   NO   R. Reynolds Stabilize eroded SW corner to north corner with straw bales as SW run-off is transporting sediment freely.   NO  
16-010(b) 55.5 9/15/1997   YES NO NO NO "WX-3 SOP Controlled Flash Pad" just south (upslope) of MDA-P. Only occasional sparse vegetation, estimated <10%. Generally slopes to north towards MDA-P. YES NO Sheet flow under fence at north side of PRS.     Flows to asphalt-lined run-on diversion channel at south end of MDA-P project, then around east end of MDA-P to Canon de Valle. Several small rills leading to asphalt channel. NO   NO   NO Site is at top of slope so run-on is not a concern. D. Mays Revegetate within fence and between north fence and the asphalt channel. Earthen berm below flash pad has been fortified, and run-on diversion improvements have been recommended. NO This PRS is, by definition, an HE waste treatment area, so the "yes" for #12(a) is not evidence of poor housekeeping.
16-010(c) 47.2 10/17/1997 16-388 YES NO NO NO Burn ground at TA-16.  South of Canon de Valle. Sparse vegetation along perimeter fence. <10% in majority of burn site.  10-30% on slope south of burn unit. YES NO       South drainage to Canon de Valle. Hill erosion begins south of the site, outside the PRS boundary, and extends through the site.   Majority of erosion is on the slopes south of the burn unit. NO   NO   YES Runoff from the slope south of the PRS boundary is flowing onto the site. T. Lemke Straw bales or other energy dissipaters should be placed along the south perimeter fence as this is the source of erosion problems for the PRS. Work is part of the new HEWTF. NO The southern boundary of the PRS is on 10-30% slope with limited vegetation.  Evidence of erosion already exists.
16-010(d) 50.3 12/5/1997 16-399 YES NO NO NO Burn pad located at TA-16 burn ground. No canopy cover.  Very little ground cover.   YES YES Run-off flow in man-made channels along the north and west fences.       Rills along north and west fences.  Additional small rills radiating outward from the burn pad. NO   NO   NO   T. Lemke   Work performed as part of the new HEWTF. NO Very little ground cover.  Existing evidence of erosion.

Debris consists of ash and burned material.  Ash is scattered around the site where sheet flow could potentially transport it off site.
16-010(e) 14.0 10/28/1997   YES NO NO NO Troughs at TA-16 burn ground. Upper area sparse; lower area relatively thick grass and shrubs. Area fans out southward from building 16-390. NO NO           NO   NO Building 16-370 labeled "Decommissioned". NO   D. Mays     NO Assessment data provided by information gathered from a field visit to the area on 9/15/97.
16-010(f) 14.0 10/28/1997   YES NO NO NO Troughs at TA-16 burn ground. Upper area sparse; lower area relatively thick grass and shrubs. Area fans out southward from building 16-390. NO NO           NO   NO Building 16-370 labeled "Decommissioned". NO   D. Mays     NO Assessment data provided by information gathered from a field visit to the area on 9/15/97.
16-010(g) 46.0 12/19/1997 16-363 YES NO NO NO Building 16-363 NPDES outfall. Large rocks, gravel, some leaf litter. Approximately 20% slope on the south canyon facing slope. YES NO Outfall pipe discharges onto rock.  No channelization.     NPDES outfall drains to a tributary, then on to Canon de Valle. Sheet flow if anything.  Rocks are large enough to contain flow.  Gravel around discharge site helps keep erosion down.  Rock check dam could prevent further continuance. YES Parking lot and roof drain from 16-363. YES NPDES outfall # EPA 05A055. NO Major drainage 50 ft. to the east. R. Reynolds     NO Trash consists of waste asphalt, pieces of insulation, rags, paper trash and debris.
16-010(h) 8.8 9/15/1997 16-390 YES NO NO NO Brown concrete skirt on south side of Building 16-390. All concrete.   NO NO           NO On the contrary, the building prevents all run-off. NO Building 16-390 decommissioned. NO   D. Mays   Straw bale check dams located within drainages below burn grounds area. NO  
16-010(i) 14.0 9/15/1997   YES NO NO NO East side of TA-16 burn ground:  16-010(i) = channel; 16-010(n) = trough. Mixture of soil, stones, and grass/vegetation. About 10% NO NO           NO   NO Building 16-390 is decommissioned. NO   D. Mays     NO Trough removed.  Former burn pad at end of trough HE contaminated (16-010(n))

Drainage channel not contaminated (16-010(I))
16-010(j) 14.0 9/15/1997   YES NO NO NO Troughs at TA-16 burn ground. Upper area sparse; lower area relatively thick grass and shrubs. Area fans out southward from building 16-390. NO NO           NO   NO Building 16-370 labeled "Decommissioned". NO   D. Mays     NO  
16-010(k) 14.0 9/15/1997   YES NO NO NO Troughs at TA-16 burn ground. Upper area sparse; lower area relatively thick grass and shrubs. Area fans out southward from building 16-390. NO NO           NO   NO Building 16-370 labeled "Decommissioned". NO   D. Mays   Straw bale check dams located within drainages below burn grounds area. NO  
16-010(l) 14.0 9/15/1997   YES NO NO NO Troughs at TA-16 burn ground. Upper area sparse; lower area relatively thick grass and shrubs. Area fans out southward from building 16-390. NO NO           NO   NO Building 16-370 labeled "Decommissioned". NO   D. Mays   Straw bale check dams located within drainages below burn grounds area. NO  
16-010(m) 14.0 9/15/1997   YES NO NO NO Troughs at TA-16 burn ground. Upper area sparse; lower area relatively thick grass and shrubs. Area fans out southward from building 16-390. NO NO           NO   NO Building 16-370 labeled "Decommissioned". NO   D. Mays   Straw bale check dams located within drainages below burn grounds area. NO  
16-010(n) 14.0 9/15/1997   YES NO NO NO East side of TA-16 burn ground:  16-010(i) = channel; 16-010(n) = trough. Mixture of soil, stones, and grass/vegetation. About 10% NO NO           NO   NO Building 16-390 is decommissioned. NO   D. Mays   Straw bale check dams located within drainages below burn grounds area. NO Trough removed.  Former burn pad at end of trough HE contaminated (16-010(n))

Drainage channel not contaminated (16-010(I))
16-011 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-012(a) 15.3 9/5/1997   YES NO NO NO Listed as active or inactive satellite or less than 90 day storage, or interim storage for HE.  Rest houses around TA-16-260. Areas surrounded by asphalt.   NO NO Sites are located indoors.         NO   NO   NO   T. Lemke     NO Sites are located inside buildings.
16-012(a2) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to the area on 9/22/97.
16-012(b) 15.3 9/5/1997   YES NO NO NO Listed as active or inactive satellite or less than 90 day storage, or interim storage for HE.  Rest houses around TA-16-260. Areas surrounded by asphalt.   NO NO Sites are located indoors.         NO   NO   NO   T. Lemke     NO Sites are located inside buildings.
16-012(c) 15.3 9/5/1997   YES NO NO NO Listed as active or inactive satellite or less than 90 day storage, or interim storage for HE.  Rest houses around TA-16-260. Areas surrounded by asphalt.   NO NO Sites are located indoors.         NO   NO   NO   T. Lemke     NO Sites are located inside buildings.
16-012(d) 15.3 9/5/1997   YES NO NO NO Hazardous waste satellite storage area on west side of TA-16-260. Area surrounded by asphalt and gravel.   NO NO           NO   NO   NO   T. Lemke     NO No soil surrounding or within the immediate area of the PRS.
16-012(e) 15.3 9/5/1997   YES NO NO NO Listed as active or inactive satellite or less than 90 day storage, or interim storage for HE.  Rest houses around TA-16-260. Areas surrounded by asphalt.   NO NO Sites are located indoors.         NO   NO   NO   T. Lemke     NO Sites are located inside buildings.
16-012(f) 15.3 9/5/1997   YES NO NO NO Listed as active or inactive satellite or less than 90 day storage, or interim storage for HE.  Rest houses around TA-16-260. Areas surrounded by asphalt.   NO NO Sites are located indoors.         NO   NO   NO   T. Lemke     NO Sites are located inside buildings.
16-012(g) 15.3 9/5/1997   YES NO NO NO Listed as active or inactive satellite or less than 90 day storage, or interim storage for HE.  Rest houses around TA-16-260. Areas surrounded by asphalt.   NO NO Sites are located indoors.         NO   NO   NO   T. Lemke     NO Sites are located inside buildings.
16-012(h) 15.3 9/5/1997   YES NO NO NO Listed as active or inactive satellite or less than 90 day storage, or interim storage for HE.  Rest houses around TA-16-260. Areas surrounded by asphalt.   NO NO Sites are located indoors.         NO   NO   NO   T. Lemke     NO Sites are located inside buildings.
16-012(t) 3.6 8/22/1997 16-370 YES NO NO NO Satellite storage unit near 16-370. Enclosed next to building. Flat parking area. NO NO           NO   NO   NO   S. Veenis     NO Original assessment 8/22/97

Part B revised 1/12/98 due to SWAT meeting

Part B revised 2/4/98 due to inconsistencies in completion of RFI Report for this site.  Other local PRS were separated and assessed on their own.
16-013 22.7 8/8/1997   YES NO NO NO   Combination gravel and grass. Just over 10%. YES YES Drainage channel from historic parking lot.   Swale by PRS 16-029(x)   Grass shows flow direction, but no soil transport observed. YES Roof drains and parking lot. NO   NO   D. Mays Remove trash from ditch   NO  
16-015(a) 8.8 10/10/1997 16-1081 YES NO NO NO PRS is site of former building, northwest of Building 16-1081 (manhole). Close to 25% grassy cover.   NO NO           NO   NO   NO   D. Mays     NO  
16-015(b) 3.6 10/10/1997 16-27 YES NO NO NO South of paved road leading to Building 16-27. Grass, thistle. Gradual slope in drainage swale. NO NO           NO   NO   NO   D. Mays     NO  
16-015(c) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-015(d) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-016(a) 17.5 6/9/1998   YES NO NO NO Gently sloping area south of V-Site remediation of building 16-27. Dense vegetative cover of grasses. Slope varies, but generally flat. YES NO Sheet flow runoff   meadow adjacent to site  Site located within meadow setting, no evidence of surface water leaving site.   NO   NO   YES Sheet flow run-on from upslope, at west end of site. S. Veenis     NO The SWAT meeting held on 3/18/98 determined that the wrong PRS (16-016(c)) was originally assessed.  The new score reflects the actual site conditions.
16-016(b) 10.6 7/12/1999 16-54 YES NO NO NO Landfill consisting of broken concrete and mounds of soil. Area heavily vegetated with grasses. Flat area with gently slope towards the east. NO NO None due to thick vegetation.       None observed. NO No impact NO No operations YES Minimal upslope run-on. Veenis, Steve     NO  
16-016(c) 72.0 1/12/1998   YES YES NO NO  PRS below flash pad area and west of MDA P.  MDA P western access road passes through site towards Canon de Valle Loose tuff sediment  Road bed descends into canyon side. YES YES  Road is starting to wash out at switchback.      Wash outs along road discharge into the canyon bottom.  Left hand side of road starting to wash out.  Sheet flow at midway point. NO   NO   YES  Natural conveyance of SW run-off directed down middle of site. R. Reynolds BMP recommended at water diversion point along road side (I.e. rock pile or energy dissipater) Site regrading has been performed to direct flow away from landfill.  Outlet protection is provided at all upslope culverts, run-on diversion extends across the upper portion of site to direct flows always from landfill, straw bale barriers and vegetative buffers exist along the western access road. NO  
16-016(f) 29.8 7/17/1998 16-360 YES NO NO NO Adjacent to bench above water canyon.  Site is inactive (debris pile). Small amount of grass and weeds.   YES NO Runoff is sheet flow from site. Water Canyon   Runoff from site and surrounding area terminates in a large bench adjacent to Water Canyon (north side of Water Canyon).   NO   NO   NO   J. Walterscheid     NO Pieces of concrete (less than 0.5" in size.
16-017 10.6 2/24/1998 16-515 YES NO NO NO Flat meadow area, site of former "90s Line" and other decommissioned structures, generally NE of V Site. Good grass cover. Very gradual slope toward NE. NO NO           NO   NO   YES Natural sheet flow across meadow, probably combined with groundwater flow, fills "90S Line Pont" NE of 16-017. D. Mays     NO  
16-018 69.3 10/17/1997   YES NO YES NO MDA-P.  Extends from mesa top on south side of Canon de Valle to the canyon floor adjacent to watercourse. Heavy ground cover except in areas where debris is visible. <10% on mesa top.  >30% from mesa top to canyon floor. YES YES  Site run-on is diverted around MDA on southern side to the eastern side through asphalt channels and culverts.      Run-off from MDA terminates into designed trenches below the site.  Diversion channels redirect flow directly into Canon de Valle  Rill erosion is evident on western access road and on the waste segregation pad on east side of site. NO   NO   YES Sheet flow from surrounding terrain. S. Veenis Straw bales should be replaced in some areas.  Other straw bales on site should be staked into the ground to be most effective.   Routine inspection/maintenance should be a priority for this site! Site regrading has been performed to direct flow away from landfill.  Outlet protection is provided at all upslope culverts, run-on diversion extends across the upper portion of site to direct flows always from landfill, straw bale barriers and vegetative buffers exist along the western access road. NO Area is heavily vegetated.

Visible debris includes concrete, 55-gallon drums, wood, culverts, storage tanks, and various types of metal structures and equipment.
16-019 83.0 4/1/1999 16-260 YES NO NO YES Site of old landfill NE of TA-16-260 (MDA-R).  The MDA is a large site which starts on the mesa top and extends downward into Canon de Valle. Ground and canopy cover is sparse in some areas. Site drops off into bench setting and then into canyon bottom. YES YES Channel created from septic outfall discharges and roof drains from 16-260 (16-005(f)) which bisects the MDA.     Channel discharges from site directly into Canon de Valle.  The remainder of the site sheet flows into the canyon. Mostly debris and old trees mixed together with minimal evidence of erosion.  The drainage channel from 16-005(f) has formed large gully which bisects the MDA. YES Roof drain discharges into drainage channel formed from inactive septic outfall (16-005(f)). NO   YES Large area with natural vegetation, sheet flow from surrounding area. Veenis, Steve Flow dissipation or diversion would help reduce impact to canyon.   NO Upstream from 16-260 outfall area +/- 1/4 mile.  Site re-scored to reflect the entire PRS boundary and to be consistent with PRS 16-005(f) which bisects the MDA from top to bottom.  The original assessment was performed on 1/12/98.
16-020 61.3 9/5/1997 16-222 YES NO NO NO Former NPDES outfall and associated drainage south of TA-16-222. Much of channel is bare soil. Relatively flat. YES YES Natural channel from outfall to discharge point in Canon de Valle.      Outfall discharges under building and into tributary of canyon. In some areas channel banks have been removed and the area leveled.  Significant rill and sheet erosion present in these areas. YES  Roof drains are tied into the NPDES outfall. YES Inactive NPDES outfall  (06A073) formerly supplied photochemical related  discharges onto site. YES Sheet flow from surrounding area. T. Lemke Repair erosion damage and re-establish channel.  Provide more check dams below existing BMPs to improve effectiveness. Straw bale check dams have been installed within the channel prior to the "bend" in channel. BMPs upgraded 8/97.  Additional straw bale check dam installed down drainage 10/98 YES Lack of established channel in some areas provides potential for erosion.

Wood and other construction debris present in watercourse.
16-021(a) 27.5 7/25/1997 16-450 YES NO NO NO Mesa top located near building 16-450. Mostly pine needle litter, canopy cover.   NO NO No visible channel, pine needle litter around run- off area suggests no run-off.         NO   NO   YES Sheet flow possible in large storm event. C. McLean     NO Pipe drainage to PRS has been plugged.
16-021(b) 17.5 7/17/1998   YES NO NO NO South side of mesa drains towards Water Canyon. Grasses, trees, shrubs.   YES NO Terminates in a small meadow, man-made channel west of meadow terminates in Water Canyon.   Meadow Runoff terminates in a small meadow.  Man-made channel directs parking lot runoff to southwest of meadow into Water Canyon.   NO   NO Inactive outfall is adjacent (west) of site.  05A071. YES Slope off of roadway. J. Walterscheid     NO  
16-021(c) 73.3 9/5/1997   YES NO NO YES Within established channel on mesa top.  Channel discharges to Canon de Valle. PRS is watercourse with very little vegetation.   YES YES Trough that drains a series of sumps in TA-16-260.  Discharges into natural drainage channel.  Man-made source.       Eroded channel sides and formed rills within channel. YES Run-on is from discharges associated with industrial activity in TA-16-260. NO   YES Sheet flow from slopes surrounding channel. T. Lemke   Existing BMPs include run-on controls, straw bale check dams and jute matting within the channel at several locations. BMPs installed 9/30/96.  Additional BMPs were upgraded 10/98. NO Multiple BMPs in place.
16-022(a) 3.6 7/17/1998 16-195 YES NO NO NO USTs associated with service station 16-195. All area around 16-195 is asphalted. Parking lots. NO NO N/A     N/A All of area is covered with asphalt. NO Small amount of run-on from roadway. NO   NO   J. Walterscheid     NO Patches of oil staining on asphalt.
16-022(b) 3.6 7/17/1998 16-195 YES NO NO NO USTs associated with service station 16-195. All area around 16-195 is asphalted. Parking lots. NO NO N/A     N/A All of area is covered with asphalt. NO Small amount of run-on from roadway. NO   NO   J. Walterscheid     NO Patches of oil staining on asphalt.
16-023(b) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-024(a) 3.6 8/29/1997   YES NO NO NO Uphill on south side of road to Building 16-345 and old WWTF. Gravel, needles, etc, about 80%.   NO NO           NO   NO   NO   D. Mays     NO  
16-024(b) 3.6 9/22/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO  
16-024(c) 8.8 8/8/1997   YES NO NO NO Abandoned magazine area with buildings and road structures. Grasses/weeds - some visible asphalt chunks from old roads.   NO NO 16-025(a&b) have vegetated swale that drains NW (yes).         NO   NO   NO Drainage swale above site diverts run-on. S. Veenis Minor asphaltic chunks visible in spots.  No BMPs recommended.   NO  
16-024(d) 8.8 8/8/1997   YES NO NO NO Abandoned magazine area with buildings and road structures. Grasses/weeds - some visible asphalt chunks from old roads.   NO NO 16-025(a&b) have vegetated swale that drains NW (yes).         NO   NO   NO Drainage swale above site diverts run-on. S. Veenis Minor asphaltic chunks visible in spots.  No BMPs recommended.   NO  
16-024(e) 8.8 8/8/1997   YES NO NO NO Abandoned magazine area with buildings and road structures. Grasses/weeds - some visible asphalt chunks from old roads.   NO NO 16-025(a&b) have vegetated swale that drains NW (yes).         NO   NO   NO Drainage swale above site diverts run-on. S. Veenis Minor asphaltic chunks visible in spots.  No BMPs recommended.   NO  
16-024(f) 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
16-024(g) 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
16-024(h) 8.8 8/8/1997   YES NO NO NO An adjacent drainage approx. 100 feet north. Pine needles, sparse grass and rocks.   NO NO Tributary to canyon de Valle adjacent to site- run-off does not appear to make drainage.         NO   NO   NO   S. Veenis     NO  
16-024(i) 3.6 10/17/1997 16-192 YES NO NO NO Site of former magazine, west of TA-16-192.  Area is now covered with asphalt and used as a parking lot. Area covered with asphalt.   NO NO           NO   NO   NO   T. Lemke     NO Site is now covered with asphalt.

No evidence of magazine.  Area has been covered with asphalt and now serves as roadway and parking lot for TA-16-192 (S-Site Cafeteria).
16-024(j) 10.6 10/17/1997 16-204 YES NO NO NO PRS is site of former building.  Site is currently under the NE corner of TA-16-204. Area covered with asphalt, gravel, and grass.   NO NO           YES Runoff from TA-16-204 and surrounding asphalt. NO   NO   T. Lemke     NO Area in and around PRS was excavated and recontoured for construction of TA-16-204.  No evidence of former building exists.
16-024(k) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-024(l) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-024(m) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-024(n) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-024(o) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-024(p) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-024(q) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-024(r) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-024(s) 15.3 8/8/1997   YES NO NO NO   Grasses   NO NO           NO   NO   NO   C. McLean     NO  
16-024(t) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-024(u) 8.8 10/17/1997 16-341 YES NO NO NO Site of old magazine.  West of TA-16-341. Ground cover on former site with canopy cover surrounding the perimeter of the PRS.   NO NO       Canon de Valle approx. 0.25 miles NW   NO   NO   NO   T. Lemke     NO Surrounding terrain slopes away from site.  Area is vegetated.
16-024(v) 3.6 10/20/1997 16-540 YES NO NO NO Area located directly east of 16-540, old steam plant.  Location is approximate. Heavy vegetative cover, (grass and weeds).   NO NO No point source or visible evidence of runoff.   Mesa top. No evidence of runoff.   NO   NO   NO   R. Reynolds     NO  
16-025(a) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-025(a2) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-025(b) 8.8 8/8/1997   YES NO NO NO Abandoned magazine area with buildings and road structures. Grasses/weeds - some visible asphalt chunks from old roads.   NO NO 16-025(a&b) have vegetated swale that drains NW (yes).         NO   NO   NO Drainage swale above site diverts run-on. S. Veenis Minor asphaltic chunks visible in spots.  No BMPs recommended.   NO  
16-025(b2) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-025(c) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to the area on 9/22/97.
16-025(c2) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-025(d) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-025(d2) 17.5 8/29/1997   YES NO NO NO Drainage for storm water behind Building 16-340. Thick grass.   YES YES Excavated trench leading to 12 inch diameter pipe which is about half full of sediment.   Swale. Suspect this merges with the 12 inch CMP on the other side of the corridor building, then drains to swale SE of 16-340. Channel well vegetated. YES Building 16-340 west parking area. NO   YES Sheet flow from uphill. D. Mays     NO  
16-025(e) 8.8 8/8/1997   YES NO NO NO Abandoned magazine area with buildings and road structures. Grasses/weeds - some visible asphalt chunks from old roads.   NO NO 16-025(a&b) have vegetated swale that drains NW (yes).         NO   NO   NO Drainage swale above site diverts run-on. S. Veenis Minor asphaltic chunks visible in spots.  No BMPs recommended.   NO  
16-025(e2) 34.6 7/17/1998 16-247 YES NO NO NO Next to State Road 4, at break in slope with mesa and the mountains. Mostly pine needles with grasses. Former buildings were on flat area. YES YES       Canon de valle drainage termination.   NO   NO   YES uphill slope. J. Walterscheid     NO  
16-025(f) 8.8 8/8/1997   YES NO NO NO Abandoned magazine area with buildings and road structures. Grasses/weeds - some visible asphalt chunks from old roads.   NO NO 16-025(a&b) have vegetated swale that drains NW (yes).         NO   NO   NO Drainage swale above site diverts run-on. S. Veenis Minor asphaltic chunks visible in spots.  No BMPs recommended.   NO  
16-025(f2) 34.6 7/17/1998 16-247 YES NO NO NO Next to State Road 4, at break in slope with mesa and the mountains. Mostly pine needles with grasses. Former buildings were on flat area. YES YES       Canon de valle drainage termination.   NO   NO   YES uphill slope. J. Walterscheid     NO  
16-025(g) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-025(h) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-025(h2) 34.6 7/17/1998 16-247 YES NO NO NO Next to State Road 4, at break in slope with mesa and the mountains. Mostly pine needles with grasses. Former buildings were on flat area. YES YES       Canon de valle drainage termination.   NO   NO   YES uphill slope. J. Walterscheid     NO  
16-025(i) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-025(j) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-025(k) 10.5 8/8/1997   YES NO NO NO See Photo (16-27) Heavy grasses with building on site.   YES NO Gentle swale run-off to SE   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO  
16-025(l) 10.5 8/8/1997   YES NO NO NO See photo (16-27). Heavy grasses with building on site.   YES NO Gentle swale run-off to SE.   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO See attached sketch.
16-025(m) 8.8 8/8/1997   YES NO NO NO An adjacent drainage approx. 100 feet north. Pine needles, sparse grass and rocks.   NO NO Tributary to canyon de Valle adjacent to site- run-off does not appear to make drainage.         NO   NO   NO   S. Veenis     NO  
16-025(n) 8.8 8/8/1997   YES NO NO NO An adjacent drainage approx. 100 feet north. Pine needles, sparse grass and rocks.   NO NO Tributary to canyon de Valle adjacent to site- run-off does not appear to make drainage.         NO   NO   NO   S. Veenis     NO  
16-025(o) 8.8 8/8/1997   YES NO NO NO An adjacent drainage approx. 100 feet north. Pine needles, sparse grass and rocks.   NO NO Tributary to canyon de Valle adjacent to site- run-off does not appear to make drainage.         NO   NO   NO   S. Veenis     NO  
16-025(p) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-025(q) 3.6 10/28/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO Assessment data provided by information gathered from a field visit to the area on 8/8/97.
16-025(r) 3.6 10/28/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO Assessment data provided by information gathered from a field visit to the area on 8/8/97.
16-025(s) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-025(t) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-025(u) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-025(v) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-025(w) 22.3 8/8/1997   YES NO NO NO Grassland covered areas. a)  Actual land fill and soil spoils pile.

c) Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run off and run on directed onto site.  Depression to the south ponds 95% of run on.  Culvert under roadway discharges to site. R. Reynolds     NO See attached sketch.
16-025(x) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-025(y) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-025(z) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-026(a) 73.5 6/9/1998 16-370 YES NO NO NO East side of 16-370 with (2) observed outfalls from building. Very little vegetation, mostly exposed volcanic tuff, soil and rocks. Steep along edge of building, flattens out near building entrance, and then over edge of road into steeper drainage area. YES YES Eroded channel along building, sheet flows over parking area into culvert which discharges to the south.     Tributary of Water Canyon south of 16-370. Rill and gully erosion prevalent on east side of building. YES Building roof run-off. NO  Condensate pipe from former operations created most of the observed erosion at site. NO   R. Reynolds Remove debris.  Most of operational related discharges have been discontinued.  Stabilize slope.   YES Trash scattered around east side of building.  Visible debris within drainage channel below culvert.  Original assessment performed on 12/5/97 was for wrong location (16-026(b)).  Site re-evaluated 6/9/98 as a result of SWAT findings.
16-026(a2) 10.6 10/17/1997 16-200 YES NO NO NO Outfall on east side of TA-16-200. Area is covered with rock.   NO NO           YES Outfall contents are from TA-16-200. NO   NO   T. Lemke   Concrete splash guard below outfall. NO No soil present on site.
16-026(b) 15.8 7/25/1997   YES NO NO NO Site sitting somewhat different than others (026(c,d,e)). Pine needle litter and grass, intermittent ponderosa.   NO NO           NO   NO   YES Sheet flow (very minimal) R. Reynolds   Jute stabilization of contaminated pond, straw bale check dams in drainage. BMPs installed 9/30/96 NO  
16-026(b2)   10/17/1997 16-202 YES NO NO NO Described as outfall off of NE corner of TA-16-202.  No evidence of an outfall.  Unable to locate in field.     NO NO           NO   NO   NO   R. Reynolds     NO  
16-026(c) 10.6 7/25/1997 16-305 YES NO NO NO An outfall from two inactive HE sumps associated with building 16-305. Asphalt and concrete Level surface trending to the southeast. NO NO        Tributary to Water Canyon is nearest drainage   YES   Parking lot near rest house. NO   YES   Upslope sources direct minimal surface water run-on to site. R. Reynolds     NO No BMPs are in place, none are recommended.
16-026(c2) 61.8 7/25/1997 16-460 YES NO NO NO Backhoe created channel for outfall which is the PRS.  Outfall no longer active. Grass covered channel.   YES YES Large pine needle debris in front of culvert running under dirt road, natural BMP.  Grass slowing flow as being flattened down.       Man made channel has carried debris from storm water run-off events. YES  Run-on from adjacent roadway and parking area NO   YES Sheet flow from surrounding area is directed into channel intensifying run-off below PRS C. McLean Inspect natural BMP. Straw bales installed 10/14/98 in drainage before culvert.  Very thick vegetative cover was observed at the site so riprap was considered excessive. NO  
16-026(d) 10.6 7/25/1997 16-303 YES NO NO NO An outfall from two inactive HE sumps associated with 16-303.  It is located southwest of building. Asphalt and concrete Level surface trending southeast. NO NO       Tributary to Water Canyon is the nearest drainage.   YES  Parking lot near rest house. NO   YES  Upslope sources direct minimal surface water run-on to site. R. Reynolds     NO  
16-026(d2) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(e) 10.6 7/25/1997   YES NO NO NO (2) sump external to building - plugged - 2 same PRS # - either side of building loading dock. Asphalt and concrete Level surface NO NO           YES   NO   YES   R. Reynolds     NO  
16-026(e2) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(f) 8.8 9/22/1997 16-308 YES NO NO NO Outfall south of Building 16-308. Eastern corner of building - moderate vegetative cover. Gentle slope up next to building. NO NO           NO   NO   NO   R. Reynolds     NO  
16-026(f2) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(g) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(g2) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(h) 29.1 8/22/1997   YES NO NO NO 16-003(l) consists of HE sumps; 16-003(h) consists of associated outfalls. Drainage with heavy vegetation.   YES YES Discharge from sump to PVC pipe and into settling basin which overflows into channel. Water Canyon.   Flow does not appear to reach canyon.   YES Asphalt channel into ditch. YES HE outfall, EPA-05A071. YES Upstream flow from north of Building 16-430. S. Veenis   PVC pipe is disconnected from western sump.  Settling sump is working. NO Should reconnect PVC to sump outfall.
16-026(h2) 61.0 7/25/1997 16-360 NO YES NO NO In a well-defined, 6' deep gully leading to Water Canyon. Sparse vegetation in gully.  Steeper into the drainage YES YES Drainage gully from Building 16-360.      Discharges into tributary drainage of canyon No.  Since outfall is inactive, there is almost no flow, so the gully has revegetated itself (no sediment transport). YES Small percentage (if any) of parking lot run-off goes to PRS. NO  Inactive NPDES outfall YES Natural run-on from surrounding slopes. D. Mays   A straw bale and rock dam was installed within the catch basin.  A natural brush barrier also exists within the catch basin.  These should be effective in preventing sediment migration. NO Proposed for NFA, because of low contaminant levels (mostly PAHs).
16-026(i) 15.8 2/24/1998 16-224 YES NO NO NO Outfall from NE corner of Building 16-224.  Daylights on north side of metal corridor. Grass cover over most of area. Generally flat. NO NO           YES About 6 ft of roof to Corridor 16-225, which runs east-west north of Building 16-224, drains to north, thus, onto area of PRS. NO   NO   D. Mays     NO  
16-026(i2) 17.5 2/24/1998 16-54 YES NO NO NO North of Building 16-54 between parking area and area east of TA-16 Access Road.  Same area as 16-006(a). Grass cover near roads - lower down grass plus  pine trees. Gradual slope to north. YES NO Sheet flow.  On this February day the snow melt made the ground moist but there are no erosion channels.   Meadow north of building 16-54     YES 12" CMP NE of Building 16-54 drains parking lot and other storm water flow then outputs east of PRSs 16-026(i2) and 16-006(a). NO   YES Natural sheet flow. D. Mays     NO  
16-026(j) 40.2 9/5/1997   YES NO NO NO Outfall on north side of TA-16-226. Area surrounded by asphalt and gravel with little vegetation.   YES NO     Mesa top adjacent to building.   Rill erosion in soil next to the asphalt pad. YES Building and asphalt around building contribute run-on. NO   NO   T. Lemke     NO Cover area with mulch or provide diversion to reduce erosion potential
16-026(j2) 15.8 10/28/1997   YES NO NO NO Sump south of Building 16-345.   Gradual slope. NO NO           YES Minimal parking lot run-off. NO   NO   D. Mays     NO Assessment data provided by information gathered from a field visit to the area on 7/25/97.
16-026(k) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(k2) 15.3 9/5/1997 16-260 YES NO NO NO Sump (16-029(j) and separate outfall (16-029(k2) on south side of TA-16-260.  16-003(k) is sump on east side of TA-16-260. 16-029(j) and 16-026(k2) surrounded by vegetation (25-75%).

16-003(k) surrounded by asphalt (0-25%).
  NO NO Sump is plugged and outfall is inactive.  16-003(k) discharges to underground trough.         NO   NO   NO   T. Lemke     NO  
16-026(l) 19.8 9/5/1997 16-220 YES NO NO NO NPDES and Storm Water outfall SE of TA-16-220.  Outfall discharges to another culvert. Vegetation around outfall.   NO NO           YES Storm Water culvert receives run-on from roadway. YES PRS is NPDES outfall 04A070. NO   T. Lemke     NO  
16-026(m) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
16-026(n) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
16-026(o) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
16-026(p) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
16-026(q) 10.5 8/8/1997   YES NO NO NO See photo (16-27). Heavy grasses with building on site.   YES NO Gentle swale run-off to SE.   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis   Installed straw bale dams bordering drainage. NO See attached sketch.
16-026(r) 3.6 10/20/1997 16-180 YES NO NO NO Site located in parking lot (south side of 16-180) and proceeding further south (approx. 150 feet) to corner of roadway to area covered with grass. Area covered by 75% pavement and 25% grass. Area is level parking lot, gradually sloped. NO NO No point source can be located.  RFI indicates this was an outfall but no physical evidence can be found.     No evidence of runoff can be found.   NO Former site covered by pavement and not influenced by roof runoff from 16-180. NO   NO   R. Reynolds     NO  
16-026(s) 3.6 9/22/1997 16-10 YES NO NO NO 100 feet west of building. Grassy, weedy vegetative cover. Flat area along side of Building 10. NO NO           NO   NO   NO   R. Reynolds     NO  
16-026(t)   9/22/1997 16-207 YES NO NO NO Cannot find PRS site on north side of building.  Unable to complete Part B form.     NO NO           NO   NO   NO   R. Reynolds     NO  
16-026(u) 3.6 10/17/1997 16-795 YES NO NO NO Fueling station at TA-16.  Underground tank and plume from previous release between TA-16-270 and TA-16-195. Area covered with asphalt except for a small strip of grass.   NO NO           NO   NO   NO   T. Lemke     NO  
16-026(v) 65.8 7/25/1997 16-460 YES NO NO NO Backhoe created channel for outfall which is the PRS.  Outfall no longer active. Grass covered channel.  Relatively flat. YES YES Large pine needle debris in front of culvert running under dirt road, natural BMP.  Grass slowing flow as being flattened down.      Discharges southeast towards canyon Man made channel has carried debris from storm water run-off events. YES   YES  Active NPDES outfall 05A072. YES Sheet flow from surrounding area is directed into channel intensifying run-off below PRS C. McLean Inspect natural BMP. straw bale check dam installed within drainage below site 10/98. NO  
16-026(w) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-026(x) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(y) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-026(z) 49.6 9/22/1997 16-306 YES NO NO NO Old outfall down slope of road bed - southeast of building.  TA-16-300 line deleted 7/96. Channel heavily covered with grass. Flat channel. YES YES Man-made channel at outfall reduced to natural channel 80 feet from outfall pipe.         YES Run-off old road bed - east of road bed. YES EPA 05A058 - TA-16-300 line deleted 7/96. YES Drainage from road bed and paved road drainage to channel. R. Reynolds     NO  
16-027(a) 15.3 12/19/1997 16-260 YES NO NO NO PCB spill from a transformer inside an equipment room inside TA-16-260.  Spill did not reach the environment. PRS is inside a building.   NO NO           NO   NO   NO   T. Lemke     NO PRS is inside a building.  There is no soil present and no exposure to storm water or the environment.
16-027(c) 22.7 7/17/1998 16-1461 YES NO NO NO Site is next to a transformer platform (platform has containment built into the concrete pad). Disturbed area is covered with rocks, weeds, some grasses.   YES NO Sheet runoff discharges off of site into a small containment channel (meadow) next to the parking lot.  Does not discharge into main drainage channel.   Local meadow Runoff does not reach channel around 16-430.   NO   NO   YES Minimal from up-slope. J. Walterscheid     NO  
16-027(d) 3.6 10/10/1997 16-260 YES NO NO NO West of Building 16-260.  Flat asphalt area. 75% asphalt; other 25% grass. Flat. NO NO           NO Run-on from roof does NOT contribute to pollution potential since site is sealed with asphalt. NO   NO   D. Mays     NO  
16-028(a) 51.5 7/25/1997 16-363 YES NO NO NO Soil associated with two outfalls from 16-370.  Outfalls served a roof drain on the east side of the building and a steam pit condensate drain from the south side of the building. Paved road, exposed dirt, water.   YES YES           YES Sheet flow from asphalt pad and roadway. NO   YES Sheet flow from vegetated areas adjacent to PRS site. T. Lemke   Installed straw bale dams in drainage. NO Visible debris at site included construction debris, bottles, etc.
16-028(b) 83.0 2/4/1998 16-370 YES NO NO YES Former NPDES outfall discharge (04A092).  Directly into channel which goes into Water Canyon.  Vegetation dense around channel banks, but not within channel itself.  Sloped directly into Water Canyon. YES YES  From industrial discharges of former NPDES Outfall.      Discharge into channel which flows down slope into Water Canyon +/- 300 feet southeast of outfall location.  Gully exists from outfall discharges. YES  Asphalt lined channel diverts run-on from north of building 16-370 onto slope west of building.  Flow has formed rill that flows onto southern parking lot area. NO   NPDES outfall 04A092 has been eliminated since July 1997. NO   S. Veenis Cleanup debris and provide sediment and/or dissipation controls within channel.   NO Visible debris found within drainage and on surrounding banks south of 16-370.

Original assessment 8/22/97

Part B revised 1/12/98 due to SWAT meeting

Part B revised 2/4/98 due to inconsistencies in completion of RFI Report for this site.  Other local PRS were separated and assessed on their own.
16-028(c)   9/15/1997   NO NO NO NO Could not locate PRS in the field.     NO NO           NO   NO   NO   S. Veenis     NO  
16-028(d) 21.5 10/17/1997 16-202 YES NO NO NO Sump and outfall at SE corner of TA-16-202.  Outfall is NPDES. Small wetland has formed at outfall discharge.   YES YES Man-made channel at discharge point.   Roadway drainage ditch on mesa top. Wetland at discharge point.   YES Drains inside TA-16-202 discharge to sump and associated outfall. YES Outfall is NPDES #EPA04A083. NO   T. Lemke     NO Very little slope and no bare soil present.
16-029(a) 10.6 7/25/1997   YES NO NO NO (2) sump external to building - plugged - 2 same PRS # - either side of building loading dock. Asphalt and concrete Level surface NO NO           YES   NO   YES   R. Reynolds     NO  
16-029(a2) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-029(b) 10.6 7/25/1997   YES NO NO NO (2) sump external to building - plugged - 2 same PRS # - either side of building loading dock. Asphalt and concrete Level surface NO NO           YES   NO   YES   R. Reynolds     NO  
16-029(b2) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-029(c) 10.6 7/25/1997   YES NO NO NO (2) sump external to building - plugged - 2 same PRS # - either side of building loading dock. Asphalt and concrete Level surface NO NO           YES   NO   YES   R. Reynolds     NO  
16-029(c2) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-029(d) 10.6 7/25/1997   YES NO NO NO (2) sump external to building - plugged - 2 same PRS # - either side of building loading dock. Asphalt and concrete Level surface NO NO           YES   NO   YES   R. Reynolds     NO  
16-029(d2) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-029(e) 15.3 7/25/1997   YES NO NO NO Concrete sump, flat ground. All concrete - no erosion.   NO NO           NO   NO   NO   D. Mays     NO Should not be on "Near Watercourse" List.  No Storm Water concerns.
16-029(e2) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-029(f) 15.8 8/29/1997   YES NO NO NO Sump south of Building 16-345.   Gradual slope. NO NO           YES Minimal parking lot run-off. NO   NO   D. Mays     NO  
16-029(f2) 3.6 8/8/1997 16-27 YES NO NO NO See Photo (16-27) flat meadow area Heavy grasses with building on site.   NO NO Gentle swale run-off to SE     Culvert under road to SE.   NO   NO   NO   R. Reynolds     NO  
16-029(g) 21.5 5/15/1997   YES NO NO NO   Leaves, needles.  Within large ponderosa stand.   YES YES Into swale area that terminates in meadow area.   Mesa top/meadow.     NO   YES NPDES outfall number 04A091. YES   S. Veenis Straw bale check dam.   NO Refuse: Small amount of tar.
16-029(h) 3.6 8/29/1997   YES NO NO NO   Deciduous and pine trees, thick grass.   NO NO           NO Sump outlet plugged. NO   NO   D. Mays Remove trash/debris.   NO  
16-029(h2) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-029(i) 3.6 9/22/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO  
16-029(j) 15.3 9/5/1997   YES NO NO NO Sump (16-029(j) and separate outfall (16-029(k2) on south side of TA-16-260.  16-003(k) is sump on east side of TA-16-260. 16-029(j) and 16-026(k2) surrounded by vegetation (25-75%).

16-003(k) surrounded by asphalt (0-25%).
  NO NO Sump is plugged and outfall is inactive.  16-003(k) discharges to underground trough.         NO   NO   NO   T. Lemke     NO  
16-029(k) 3.6 10/28/1997   YES NO NO NO Open meadow in flay lying area. Meadow grass. Flay lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
16-029(l) 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flay lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
16-029(m) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-029(n) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-029(o) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-029(p) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-029(q) 10.5 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flay lying area. YES NO     Swale/meadow Culvert under road to SE directs sheet flow from area.   NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
16-029(r) 3.6 9/22/1997   YES NO NO NO 100 feet west of building. Grassy, weedy vegetative cover. Flat area along side of Building 10. NO NO           NO   NO   NO   R. Reynolds     NO  
16-029(u) 8.8 8/8/1997   YES NO NO NO Abandoned buildings. Visible asphalt and gravel mixed with sediments.  Pine trees and shrubs also present. Culvert at NE corner plugged. NO NO Culvert at NE corner plugged.         NO   NO   NO   S. Veenis Visible asphalt.   NO No BMPs recommended.
16-029(v) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-029(x) 10.6 2/24/1998 16-515 YES NO NO NO Current (2/24/98) site of sump removal immediately west of Building 16-515.  After D&D completed, it will be a relatively flat meadow. After final stabilization (by D&D or ER) site will return to grassy, meadow-like vegetation.  Currently (2/24/98) under excavation. Gradual slope from Building 16-515 SE to "pond" which is north of K-site Road. NO NO ER Project drilled in "pong" in Spring 1997 and there was no water.         NO   NO   YES Natural sheet flow coincides with path of former drain line which is currently under D&D. D. Mays     NO  
16-029(y) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-029(z) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-030(a) 3.6 8/29/1997   YES NO NO NO Bermed area behind Building 16-344. Grass and pine needles.   NO NO           NO   NO   NO Berm prevents run-on. D. Mays     NO This PRS is its own sediment basin, so there is virtually no run-on or run-off.
16-030(b) 3.6 10/10/1997 16-400 YES NO NO NO Sump west of Building 16-400. 100% asphalt cover. Flat. NO NO           NO   NO   NO   D. Mays     NO  
16-030(c)   9/15/1997   NO NO NO NO Could not locate PRS in the field.     NO NO           NO   NO   NO         NO  
16-030(d) 32.8 10/10/1997 16-280 YES NO NO NO Near Building 16-280.  Drainage channel about 4 feet deep. Close to 75%, pine tree canopy cover plus needles on ground.   YES YES Channel runs toward tributary of Canon de Valle from 12 inch CMP.       Channel stable:  low slope, no obvious erosion. NO   NO Outfall NOT NPDES permitted. NO   D. Mays   Jute stabilization of contaminated pond, straw bale check dams in drainage. BMPs installed 9/30/96 NO  
16-030(e)   10/10/1997   NO NO NO NO Could not locate PRS in the field.     NO NO           NO   NO   NO         NO  
16-030(f) 15.8 9/15/1997   YES NO NO NO TA-16 "Rest House" as listed on FU-3 schedule for AP4.5 Part B and associated outfalls. Concrete, asphalt and/or vegetation at all sites. Suspected outfall at left, front side of building as you face the rest house docking bay. NO NO           NO   NO Rest houses, as a general rule, do not have operational outfalls. YES Slight run-on from surrounding area collected by berms around each rest house. D. Mays     NO 1)  All rest houses on this AP4.5(b) form have been proposed for NFA.

2)  These locations are NOT WELL-DEFINED  and generally are not mentioned in the RFI Work Plans/Reports.
16-030(g) 71.0 7/25/1997 16-380 YES NO NO NO Well defined channel, 5' deep, 150 m (450 ft) from Water Canyon.  Ditch banks vegetated, actual channel is partially vegetated.  Gradual slope to edge of Water Canyon, with steeper segments. YES YES  Natural channel to which permitted outfall discharges.      Natural channel extends towards Water Canyon  Gully erosion at outfall which tapers into sheet flow at canyon edge. YES Parking lot, loading dock run-on. YES  EPA 05A052, near building 16-380. NO Sheet flow only. D. Mays   Flow dissipation within channel at select locations and potential run-on diversion BMPs   NO None pending constituent assessment.
16-030(h) 29.1 10/28/1997   YES NO NO NO 16-003(l) consists of HE sumps; 16-003(h) consists of associated outfalls. Drainage with heavy vegetation.   YES YES Discharge from sump to PVC pipe and into settling basin which overflows into channel. Water Canyon.   Flow does not appear to reach canyon.   YES Asphalt channel into ditch. YES HE outfall, EPA-05A071. YES Upstream flow from north of Building 16-430. S. Veenis   PVC pipe is disconnected from western sump.  Settling sump is working. BMPs installed 9/30/96 NO Should reconnect PVC to sump outfall.  Assessment data provided by information gathered from a field visit to the area on 8/22/97.
16-031(a) 27.9 2/4/1998 16-370 YES NO NO NO Decommissioned cooling tower (16-372). Rock, grass, pine needles, canopy Sloped gradually towards Water Canyon. YES NO  Sheet flow      sloped toward canyon edge, but does not appear to go into canyon. None visible. Slope is mostly on volcanic tuff. NO   NO   YES  Naturally from upper portion near old cooling tower. S. Veenis Original assessment 8/22/97   NO Original assessment 8/22/97

Part B revised 1/12/98 due to SWAT meeting

Part B revised 2/4/98 due to inconsistencies in completion of RFI Report for this site.  Other local PRS were separated and assessed on their own.
16-031(b) 3.6 11/24/1997 16-260 YES NO NO NO West of Building 16-260.  Flat asphalt area. 75% asphalt; other 25% grass. Flat. NO NO           NO Run-on from roof does NOT contribute to pollution potential since site is sealed with asphalt. NO   NO   D. Mays     NO Assessment data provided by information gathered from a field visit to the area on 10/10/97.
16-031(d) 10.5 8/8/1997   YES NO NO NO See Photo (16-27) Heavy grasses with building on site.   YES NO Gentle swale run-off to SE   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO  
16-031(g) 3.6 10/28/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO Assessment data provided by information gathered from a field visit to the area on 8/8/97.
16-032(a) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-032(c) 10.5 8/8/1997   YES NO NO NO See Photo (16-27) Heavy grasses with building on site.   YES NO Gentle swale run-off to SE   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO  
16-033(a) 17.9 8/14/1998 16-16 YES NO NO NO Location of removed UST, east of Building 16-16.  Relatively flat and meadowlike with dirt access road extending about 40 feet from pavement. Medium, some thick grass, some exposed dirt and gravel. Slight grade draining south. YES NO     Meadow Meadow across street, south of Building 16-16. Recent rains have caused some sediment fans near roadway. NO   NO   NO Negligible run-on. D. Mays     NO  
16-033(b) 3.6 7/17/1998 16-195 YES NO NO NO USTs associated with service station 16-195. All area around 16-195 is asphalted. Parking lots. NO NO N/A     N/A All of area is covered with asphalt. NO Small amount of run-on from roadway. NO   NO   J. Walterscheid     NO Patches of oil staining on asphalt.
16-033(f) 17.5 7/17/1998 16-54 YES NO NO NO Former drain field next to large meadow. 100% covered with grasses in a large meadow.   YES NO Sheet flow.   Large Meadow Terminates in a large meadow.   NO   NO   YES   J. Walterscheid     NO  
16-033(g) 3.6 10/10/1997 16-260 YES NO NO NO West of Building 16-260.  Flat asphalt area. 75% asphalt; other 25% grass. Flat. NO NO           NO Run-on from roof does NOT contribute to pollution potential since site is sealed with asphalt. NO   NO   D. Mays     NO  
16-033(h) 3.6 10/10/1997 16-260 YES NO NO NO West of Building 16-260.  Flat asphalt area. 75% asphalt; other 25% grass. Flat. NO NO           NO Run-on from roof does NOT contribute to pollution potential since site is sealed with asphalt. NO   NO   D. Mays     NO  
16-033(i) 3.6 7/17/1998 16-195 YES NO NO NO USTs associated with service station 16-195. All area around 16-195 is asphalted. Parking lots. NO NO N/A     N/A All of area is covered with asphalt. NO Small amount of run-on from roadway. NO   NO   J. Walterscheid     NO Patches of oil staining on asphalt.
16-033(j) 3.6 7/17/1998 16-195 YES NO NO NO USTs associated with service station 16-195. All area around 16-195 is asphalted. Parking lots. NO NO N/A     N/A All of area is covered with asphalt. NO Small amount of run-on from roadway. NO   NO   J. Walterscheid     NO Patches of oil staining on asphalt.
16-034(a) 10.5 8/8/1997   YES NO NO NO See Photo (16-27) Heavy grasses with building on site.   YES NO Gentle swale run-off to SE   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO  
16-034(b) 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
16-034(c) 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
16-034(d) 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
16-034(e) 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
16-034(f) 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
16-034(g) 3.6 10/10/1997 16-516 YES NO NO NO East of Building 16-516 (concrete pad and soil contamination). 100% concrete and asphalt. Flat. NO NO           NO May be some run-off from 16-517 which is scheduled for D&D. NO   NO   D. Mays     NO  
16-034(h) 12.7 10/20/1997   YES NO NO NO Area defined as soil contamination area (16-034(h) and (16-034(j)) Thick grass cover in meadow. Gentle slope of area leads east. YES YES Area under power line defined with natural channel-draining to east.  Some evidence of runoff exists from heavy rain.   Meadow Runoff does not appear to continue east past Anchor Ranch road. Some evidence of ponding and drainage from low lying area. NO Localized drainage. NO   NO   R. Reynolds Some form of contamination, possibly Uranium, was recently unearthed by trenching crew.  Site has not been cleaned up.  Recommend clean up and posting of the site.  Trench was at one time covered with plastic, which has now blown off and is no longer effective.  Note:  Site apparently was posted but barrier rope is laying on the ground with "Notice-Controlled Area" signs laying in grass, not attached to rope.   NO 6 straw hay bales placed in drainage area.  Recommend upgrading hay bales to silt fence due to the nature of contamination.    1.  Bales are not staked down or held in place.  Drainage area does not produce large amounts of runoff.

2.  Could possibly be breached.
16-034(i) 10.6 2/24/1998 16-054 YES NO NO NO Meadow west of TA-16 Access Road, NW of Building 16-54.  Both PRSs are footprints of buildings removed between 1950s-1970s. Grassy meadow. Slopes gradually to east.  Small swale just west of security fence. NO NO           NO   NO   YES Natural sheet flow. D. Mays     NO  
16-034(j) 12.7 10/20/1997   YES NO NO NO Area defined as soil contamination area (16-034(h) and (16-034(j)) Thick grass cover in meadow. Gentle slope of area leads east. YES YES Area under power line defined with natural channel-draining to east.  Some evidence of runoff exists from heavy rain.   Meadow Runoff does not appear to continue east past Anchor Ranch road. Some evidence of ponding and drainage from low lying area. NO Localized drainage. NO   NO   R. Reynolds Some form of contamination, possibly Uranium, was recently unearthed by trenching crew.  Site has not been cleaned up.  Recommend clean up and posting of the site.  Trench was at one time covered with plastic, which has now blown off and is no longer effective.  Note:  Site apparently was posted but barrier rope is laying on the ground with "Notice-Controlled Area" signs laying in grass, not attached to rope. 6 straw hay bales placed in drainage area.  Recommend upgrading hay bales to silt fence due to the nature of contamination. NO 1.  Bales are not staked down or held in place.  Drainage area does not produce large amounts of runoff.

2.  Could possibly be breached.
16-034(k) 10.6 2/24/1998 16-054 YES NO NO NO Meadow west of TA-16 Access Road, NW of Building 16-54.  Both PRSs are footprints of buildings removed between 1950s-1970s. Grassy meadow. Slopes gradually to east.  Small swale just west of security fence. NO NO           NO   NO   YES Natural sheet flow. D. Mays     NO  
16-034(l) 3.6 8/8/1997   YES NO NO NO Grassland covered areas.     NO NO           NO   NO   NO   C. McLean     NO  
16-034(m) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-034(n) 22.3 8/8/1997   YES NO NO NO   a)  Actual land fill and soil spoils pile.

c)  Grassy meadow perimeter sites.
Gradual sloped away from spoils area. NO NO Grass filled depression.         YES Road bed and open. NO   YES Road run-off and run-on directed on to site.  Depression to the south ponds 95% of run-on.  Culvert under road way discharges to site. R. Reynolds     NO See attached sketch.
16-034(o) 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
16-034(p) 15.3 8/8/1997   YES NO NO NO Old burn building set in ground contains all water:  no runoff.     NO NO           NO   NO   NO   C. McLean     NO  
16-035 3.6 10/28/1997 16-340 YES NO NO NO Southeast of Building 16-340, in abandoned testing facility. Asphalt, sage brush, concrete sump.   NO NO           NO Operations discontinued NO   NO   D. Mays     NO Assessment data provided by information gathered from a field visit to the area on 8/29/97.
16-036 3.6 8/29/1997   YES NO NO NO Southeast of Building 16-340, in abandoned testing facility. Asphalt, sage brush, concrete sump.   NO NO           NO Operations discontinued NO   NO   D. Mays     NO  
C-16-002 3.6 11/24/1997 16-260 YES NO NO NO West of Building 16-260.  Flat asphalt area. 75% asphalt; other 25% grass. Flat. NO NO           NO Run-on from roof does NOT contribute to pollution potential since site is sealed with asphalt. NO   NO   D. Mays     NO Assessment data provided by information gathered from a field visit to the area on 10/10/97.
C-16-003 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to the area on 9/22/97.
C-16-005 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
C-16-006 10.5 8/8/1997   YES NO NO NO See Photo (16-27) Heavy grasses with building on site.   YES NO Gentle swale run-off to SE   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO  
C-16-011 12.7 10/20/1997   YES NO NO NO Area defined as soil contamination area (16-034(h) and (16-034(j)) Thick grass cover in meadow. Gentle slope of area leads east. YES YES Area under power line defined with natural channel-draining to east.  Some evidence of runoff exists from heavy rain.   Meadow Runoff does not appear to continue east past Anchor Ranch road. Some evidence of ponding and drainage from low lying area. NO Localized drainage. NO   NO   R. Reynolds Some form of contamination, possibly Uranium, was recently unearthed by trenching crew.  Site has not been cleaned up.  Recommend clean up and posting of the site.  Trench was at one time covered with plastic, which has now blown off and is no longer effective.  Note:  Site apparently was posted but barrier rope is laying on the ground with "Notice-Controlled Area" signs laying in grass, not attached to rope. 6 straw hay bales placed in drainage area.  Recommend upgrading hay bales to silt fence due to the nature of contamination. NO 1.  Bales are not staked down or held in place.  Drainage area does not produce large amounts of runoff.

2.  Could possibly be breached.
C-16-017 19.7 8/8/1997   YES NO NO NO Former magazines/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO  
C-16-025 3.6 9/22/1997 16-10 YES NO NO NO 100 feet west of building. Grassy, weedy vegetative cover. Flat area along side of Building 10. NO NO           NO   NO   NO   R. Reynolds     NO  
C-16-026 3.6 9/22/1997 16-10 YES NO NO NO 100 feet west of building. Grassy, weedy vegetative cover. Flat area along side of Building 10. NO NO           NO   NO   NO   R. Reynolds     NO  
C-16-028 3.6 9/22/1997 16-10 YES NO NO NO 100 feet west of building. Grassy, weedy vegetative cover. Flat area along side of Building 10. NO NO           NO   NO   NO   R. Reynolds     NO  
C-16-030 3.6 9/22/1997 16-10 YES NO NO NO 100 feet west of building. Grassy, weedy vegetative cover. Flat area along side of building. NO NO           NO   NO   NO   R. Reynolds     NO  
C-16-031 3.6 9/22/1997 16-10 YES NO NO NO 100 feet west of building. Grassy, weedy vegetative cover. Flat area along side of building. NO NO           NO   NO   NO   R. Reynolds     NO  
C-16-051 19.7 11/24/1997   YES NO NO NO Former magazine/labs. Thick grasses.   YES YES Drainage swale on SE boundary trending NE, visible natural channel in center of meadow.   Meadow Swale terminates into large meadow. Minor in some locations. NO   NO   YES Large upstream drainage area. S. Veenis     NO Assessment data provided by information gathered from a field visit to area on 8/8/97.
C-16-060 8.8 8/29/1997   YES NO NO NO West of Building 16-340. Grass and shrubs. Slopes towards Building 16-340. NO NO           NO   NO   NO   D. Mays     NO  
C-16-063 17.5 9/5/1997 16-340 YES NO NO NO Drainage ditch behind Building 16-340. Thick pine needles with some grass.   YES YES 12 inch CMP.   Swale Swale area on other side of corridor. Stabilized by vegetation. NO   NO   YES Sheet flow from meadow collecting in drainage channel. D. Mays Remove trash/debris.   NO  
C-16-064 3.6 10/28/1997   YES NO NO NO Open meadow in flat lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to the area on 9/22/97.
C-16-065 10.5 8/8/1997   YES NO NO NO See Photo (16-27) Heavy grasses with building on site.   YES NO Gentle swale run-off to SE   Swale/meadow Culvert under road to SE.   NO   NO   NO   S. Veenis     NO  
C-16-066 3.6 10/28/1997   YES NO NO NO Open meadow in flay lying area. Meadow grass. Flay lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
C-16-067 3.6 10/28/1997   YES NO NO NO Open meadow in flay lying area. Meadow grass. Flat lying area. NO NO           NO   NO   NO   R. Reynolds     NO Assessment data provided by information gathered from a field visit to area on 9/22/97.
C-16-068 8.8 8/8/1997   YES NO NO NO       NO NO           NO   NO   NO   C. McLean     NO  
C-16-069 3.6 8/8/1997   YES NO NO NO   Deep grass cover.   NO NO           NO   NO   NO   C. McLean     NO  
C-16-073 3.6 10/17/1997   YES NO NO NO Sump on the south side of TA-16-200. Sump is subsurface.  Surrounding area is covered with asphalt and concrete.   NO NO No evidence of outfall from sump.         NO   NO   NO   T. Lemke     NO Subsurface with no soil present and no discharges.
C-16-074 3.6 10/10/1997 16-516 YES NO NO NO East of Building 16-516 (concrete pad and soil contamination). 100% concrete and asphalt. Flat. NO NO           NO May be some run-off from 16-517 which is scheduled for D&D. NO   NO   D. Mays     NO