National Atmospheric Deposition Program Spring 2001 Interim Meeting Attachments to NOS Committee Meeting Minutes
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1 National Atmospheric Deposition Program Spring 2001 Interim Meeting Attachments to NOS Committee Meeting Minutes 1. USGS External QA Report Part I by John Gordon 2. Field Blank and Reference Sample Results by John Gordon 3. Interlaboratory Comparison Results by John Gordon 4. Intersite Comparison Studies by Natalie Latysh 5. Collocated Sampler Program by Natalie Latysh 6. Examinations of [H+] concentrations measured in the field and in the laboratory by Natalie Latysh 7. Site Sketch and Siting Criteria violation displays by Scott Dossett
2 Field Blank Results NADP/NTN ITERIM MEETING April 23-25, 2001 Tucson, Arizona NOS Minutes: Attachment 1
3 Locally Weighted Scatterplot Smoothing was used to depict patterns in field blank results from th percentile 50 th percentile 25 th percentile NOS Minutes: Attachment 1
4 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 1
5 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 1
6 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 1
7 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 1
8 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 1
9 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 1
10 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 1
11 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 1
12 Boxplots were prepared to show the relationship between field blank sample concentration and paired sample differences Upper Quartile Median Lower Quartile NOS Minutes: Attachment 1
13 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 1
14 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 1
15 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 1
16 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 1
17 Paired Field Blank Sample Differences NOS Minutes: Attachment 1
18 Paired Field Blank Sample Differences NOS Minutes: Attachment 1
19 Field Blank Program: [Bucket] - [Bottle] [Target] * 100 Median Relative Percent Differences Analytes Ammonium Calcium Chloride Hydrogen Ion Magnesium Nitrate Potassium Sodium Sulfate Spec Cond NOS Minutes: Attachment 1
20 Field Blank Program: Median Absolute Percent Differences [Bucket] - [Bottle] [Target] * 100 Analytes Ammonium Calcium Chloride Hydrogen Ion Magnesium Nitrate Potassium Sodium Sulfate Spec Cond NOS Minutes: Attachment 1
21 Field Blank Program: Paired-Sample Concentration Differences Analytes Year Minimum 25% Median 75% Maximum Sulfate in mg/l Nitrate in mg/l NOS Minutes: Attachment 1
22 Blind Audit v. Field Blank: [Bucket] - [Bottle] [Target] * 100 Median Relative Percent Differences Analytes 1998 BLIND FIELD AUDIT BLANK Analytes 1999 BLIND FIELD AUDIT BLANK Ammonium Ammonium Calcium Calcium Chloride Chloride Hydrogen Ion Hydrogen Ion Magnesium Magnesium Nitrate Nitrate Potassium Potassium Sodium Sodium Sulfate Sulfate Spec Cond Spec Cond NOS Minutes: Attachment 1
23 Blind Audit v. Field Blank: [Bucket] - [Bottle] [Target] * 100 Median Absolute Percent Differences Analytes 1998 BLIND FIELD AUDIT BLANK Analytes 1999 BLIND FIELD AUDIT BLANK Ammonium Ammonium Calcium Calcium Chloride Chloride Hydrogen Ion Hydrogen Ion Magnesium Magnesium Nitrate Nitrate Potassium Potassium Sodium Sodium Sulfate Sulfate Spec Cond Spec Cond NOS Minutes: Attachment 1
24 Field Blank Results NADP/NTN ITERIM MEETING April 23-25, 2001 Tucson, Arizona NOS Minutes: Attachment 2
25 Locally Weighted Scatterplot Smoothing was used to depict patterns in field blank results from th percentile 50 th percentile 25 th percentile NOS Minutes: Attachment 2
26 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 2
27 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 2
28 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 2
29 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 2
30 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 2
31 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 2
32 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 2
33 mg/l Paired Field Blank Sample Differences NOS Minutes: Attachment 2
34 Boxplots were prepared to show the relationship between field blank sample concentration and paired sample differences Upper Quartile Median Lower Quartile NOS Minutes: Attachment 2
35 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 2
36 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 2
37 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 2
38 Paired Field Blank Sample Differences mg/l NOS Minutes: Attachment 2
39 Paired Field Blank Sample Differences NOS Minutes: Attachment 2
40 Paired Field Blank Sample Differences NOS Minutes: Attachment 2
41 Field Blank Program: [Bucket] - [Bottle] [Target] * 100 Median Relative Percent Differences Analytes Ammonium Calcium Chloride Hydrogen Ion Magnesium Nitrate Potassium Sodium Sulfate Spec Cond NOS Minutes: Attachment 2
42 Field Blank Program: Median Absolute Percent Differences [Bucket] - [Bottle] [Target] * 100 Analytes Ammonium Calcium Chloride Hydrogen Ion Magnesium Nitrate Potassium Sodium Sulfate Spec Cond NOS Minutes: Attachment 2
43 Field Blank Program: Paired-Sample Concentration Differences Analytes Year Minimum 25% Median 75% Maximum Sulfate in mg/l Nitrate in mg/l NOS Minutes: Attachment 2
44 Blind Audit v. Field Blank: [Bucket] - [Bottle] [Target] * 100 Median Relative Percent Differences Analytes 1998 BLIND FIELD AUDIT BLANK Analytes 1999 BLIND FIELD AUDIT BLANK Ammonium Ammonium Calcium Calcium Chloride Chloride Hydrogen Ion Hydrogen Ion Magnesium Magnesium Nitrate Nitrate Potassium Potassium Sodium Sodium Sulfate Sulfate Spec Cond Spec Cond NOS Minutes: Attachment 2
45 Blind Audit v. Field Blank: [Bucket] - [Bottle] [Target] * 100 Median Absolute Percent Differences Analytes 1998 BLIND FIELD AUDIT BLANK Analytes 1999 BLIND FIELD AUDIT BLANK Ammonium Ammonium Calcium Calcium Chloride Chloride Hydrogen Ion Hydrogen Ion Magnesium Magnesium Nitrate Nitrate Potassium Potassium Sodium Sodium Sulfate Sulfate Spec Cond Spec Cond NOS Minutes: Attachment 2
46 Interlaboratory Comparison Study Results NADP/NTN ITERIM MEETING April 23-25, 2001 Tucson, Arizona NOS Minutes: Attachment 3
47 Interlaboratory Comparison Program Quantify bias and precision of data produced by the CAL Compare performance of the CAL with other laboratories routinely analyzing low ionic strength samples NOS Minutes: Attachment 3
48 Each laboratories 50 th and 90 th percentile differences on replicate sample was summed. CAL CAL cal sum ESE ESE ESE sum ptile ptile ptile th NOS Minutes: Attachment 3
49 and the labs were ranked on the basis of the sum of the 50 th and 90 th percentiles Ammonium lab ranked MSC 0.01 CAL 0.01 tie 1st MOE 0.01 SA 0.01 ESE 0.33 NOS Minutes: Attachment 3
50 How did CAL rank on replicate sample analysis? ANALYTE Calcium 3rd 1st 4th Magnesium tie 1st 2nd tie 1st Sodium 1st 1st 4th Potassium 3rd 1st 1st Ammonium 1st tie 1st 1st Chloride 2nd tie 1st tie 2nd Nitrate 4th tie 1st tie 1st Sulfate 1st 1st 2nd Hydrogen ion 1st 3rd 2nd Specific cond. 1st 3rd 2nd NOS Minutes: Attachment 3
51 Ultrapure Sample Results Concentration values reported for all analytes were below the reporting limits in 1997, 1998 and 1999 Only participating laboratory with no false positives for all three years NOS Minutes: Attachment 3
52 Concentration Difference, in mg/l Control Chart depicting CAL s Interlaboratory Comparison Study Results, Upper Control Limit Lower Control Limit NOS Minutes: Attachment 3
53 Sulfate values outside control limits for the CAL increased in 1999 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
54 Control Chart depicting CAL s Interlaboratory Comparison Study Results, Concentration Difference, in mg/l NOS Minutes: Attachment 3
55 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
56 Control Chart depicting CAL s Interlaboratory Comparison Study Results, Concentration Difference, in mg/l NOS Minutes: Attachment 3
57 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
58 Control Chart depicting CAL s Interlaboratory Comparison Study Results, Concentration Difference, in mg/l NOS Minutes: Attachment 3
59 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
60 Concentration Difference, in mg/l Control Chart depicting CAL s Interlaboratory Comparison Study Results, NOS Minutes: Attachment 3
61 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
62 Concentration Difference, in mg/l Control Chart depicting CAL s Interlaboratory Comparison Study Results, NOS Minutes: Attachment 3
63 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
64 Concentration Difference, in mg/l Control Chart depicting CAL s Interlaboratory Comparison Study Results, NOS Minutes: Attachment 3
65 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
66 Concentration Difference, in mg/l Control Chart depicting CAL s Interlaboratory Comparison Study Results, NOS Minutes: Attachment 3
67 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
68 Control Chart depicting CAL s Interlaboratory Comparison Study Results, Concentration, in units NOS Minutes: Attachment 3
69 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
70 Concentration, Microsiemens per Centimeter Control Chart depicting CAL s Interlaboratory Comparison Study Results, NOS Minutes: Attachment 3
71 NUMBER OF REPORTED VALUES EXCEEDING + 3 F PSEUDOSIGMAS NOS Minutes: Attachment 3
72 Summary The Central Analytical Laboratory performed very well in the USGS interlaboratory comparison program during Between 1997 and 1999, the number of reported values for CAL exceeding the control chart limits decreased for NO 3, Cl, ph and SC CAL was ranked first or second on replicate sample analysis for 8 of 10 analytes among 7 participating laboratories in 1999 NOS Minutes: Attachment 3
73 Intersite Comparison Program NOS Minutes: Attachment 4
74 Intersite Comparison Program Onsite ph measurements are considered to be more accurate of precipitation chemistry than subsequent laboratory measurements Intersite-Comparison Program is designed to assess the accuracy of onsite ph and specific conductance measurements A synthetic precipitation sample prepared by the USGS is mailed to all site operators, who are asked to determine the ph and specific conductance If measurements are outside of the acceptable range, the operator is asked to participate in a follow-up study and perform ph and specific conductance measurements on additional samples NOS Minutes: Attachment 4
75 Intersite Comparison Program Five Intersite-Comparison studies were conducted during Spring and fall of High participation indicates that site operators show willingness and interest in the study: Study Active Sites Responses NOS Minutes: Attachment 4
76 ph Values from Previous Intersite-Comparison Studies NOS Minutes: Attachment 4
77 Specific Conductance Values from Previous Intersite-Comparison Studies NOS Minutes: Attachment 4
78 100 Successful ph and Specific Conductance Measurements for Intersite Comparison Studies Successful Measurements (%) % Met ph Goal % Met SC Goal Study Number NOS Minutes: Attachment 4
79 Intersite Comparison Program NOS Minutes: Attachment 4
80 Intersite Comparison Program Deviation of On-site ph Measurement from Median ph NOS Minutes: Attachment 4
81 Intersite Comparison Program Deviation of On-site Specific Conductance Measurement from Median SC NOS Minutes: Attachment 4
82 Intersite Comparison Program Follow-up Evaluation of Site Operator s Performance Z-score = x x m fps where x = individual observation x m = median of all observations fps = f-pseudosigma of all observations (75 th 25 th percentile) Z-values account for deviation from accuracy limits, based on difficulty of measuring ph at specific hydrogen ion concentrations Cumulative z-values are considered for three previous intersite-comparison studies in assigning site operators, who failed to meet accuracy goals, into four categories NOS Minutes: Attachment 4
83 Intersite Comparison Program Follow-up Study Eligible Operators Non- Responders % Successful ph Re-measurements * A follow-up for Study 43 was not conducted NOS Minutes: Attachment 4
84 Intersite Comparison Program Please visit our website: NOS Minutes: Attachment 4
85 Collocated Study Results NADP/NTN ITERIM MEETING April 23-25, 2001 Tucson, Arizona NOS Minutes: Attachment 5
86 Collocated Sites 1997 Sites: OR09/09OR Silver Lake Ranger Station FL14/14FL Quincy 1998 Sites: WY95/95WY - Brooklyn Lake VA28/28VA - Shenandoah National Park 1999 Sites: MA08/08MA - Quabbin Reservoir MN01/01MN - Cedar Creek NOS Minutes: Attachment 5
87 Collocated Sites OR09 WY95 MN01 MA08 VA28 FL14 October September 1997 October September 1998 October September 1999 NOS Minutes: Attachment 5
88 Collocated sampler program Objectives Estimate overall variability of NADP/NTN precipitation measurements -- chemistry and physical properties Detect changes in variability due to equipment and protocol changes Compare overall system variability to components of system variability measured by other external QA programs NOS Minutes: Attachment 5
89 Precision Estimates for Collocated Sites: Difference Between Collectors = ( C 1 - C 2 ) Relative Percent Difference = C 1 - C 2 (C 1 + C 2 )/2 * 100 Absolute Difference Between Collectors = C 1 - C 2 Absolute Percent Difference = C 1 - C 2 * 100 (C 1 + C 2 )/2 NOS Minutes: Attachment 5
90 mg/l Median Sample Chemistry NOS Minutes: Attachment 5
91 mg/l Median Sample Chemistry NOS Minutes: Attachment 5
92 mg/l Median Sample Chemistry NOS Minutes: Attachment 5
93 mg/l Median Sample Chemistry NOS Minutes: Attachment 5
94 mg/l Median Sample Chemistry NOS Minutes: Attachment 5
95 NOS Minutes: Attachment 5
96 NOS Minutes: Attachment 5
97 Absolute Percent Difference Median Sample Chemistry, mg/l NOS Minutes: Attachment 5
98 Absolute Percent Difference Median Sample Chemistry, mg/l NOS Minutes: Attachment 5
99 Absolute Percent Difference Median Sample Chemistry, mg/l NOS Minutes: Attachment 5
100 Absolute Percent Difference Median Sample Chemistry, mg/l NOS Minutes: Attachment 5
101 Absolute Percent Difference Median Sample Chemistry, mg/l NOS Minutes: Attachment 5
102 Absolute Percent Difference NOS Minutes: Attachment 5
103 Absolute Percent Difference NOS Minutes: Attachment 5
104 Absolute Percent Difference NOS Minutes: Attachment 5
105 Absolute Percent Difference Absolute Percent Difference NOS Minutes: Attachment 5
106 Absolute Percent Difference Absolute Percent Difference NOS Minutes: Attachment 5
107 Nitrate Concentration and Deposition Differences SITE ID RELATIVE CONCENTRATION DIFFERENCE BETWEEN COLLCETORS mg/l ABSOLUTE CONCENTRATION DIFFERENCE BETWEEN COLLECTORS mg/l RELATIVE DEPOSITION DIFFERENCE BETWEEN COLLECTORS Kg/Hectare ABSOLUTE DEPOSITION DIFFERENCE BETWEEN COLLECTORS Kg/Hectare FL MA MN OR VA WY NOS Minutes: Attachment
108 Median Relative Percent Differences Analyte FL14 MA08 MN01 OR09 VA28 WY95 Ammonium Calcium Sulfate Nitrate Sample Depth Sample Volume NOS Minutes: Attachment 5
109 Differences between lab and field ph measurements for National Trends Network precipitation samples collected between 1987 and Onsite ph measurements are considered more accurate than lab measurements due to chemical changes that occur between the time the sample is analyzed in the field and in the laboratory and may be attributed to: microbial metabolism of organic acids which reduce hydrogen ion concentration in solution between field and laboratory measurements; break-down of particulate matter resulting in delayed neutralization of acid-contributing species; and other chemical changes introduced through sample shipping and handling. Many factors influence these differences including: site locality (including: terrain lithology, wind patterns, availability of basic species derived from soils, vegetation, ground cover, etc.), season, annual precipitation, median ph of precipitation and concentrations of chemical constituents. Field measurements of hydrogen ion concentration are greater than lab measurements for most samples. Before the protocol change of 1994 field hydrogen ion concentrations exceeded laboratory measurements in 80% of the samples. After the protocol change the percentage declined to 67. After the protocol change, more samples have larger laboratory hydrogen ion concentrations. Samples that experience no change in hydrogen ion concentration between field and lab measurements have the lowest median ph values. Hydrogen ion differences are greatest for smaller precipitation samples. PH values are influenced by sample size. Smaller samples tend to experience more acidity, due to the high concentrations of ionic species that are washed out during the brief events. The largest hydrogen ion losses occur for samples with lower ph values. Since the protocol change, hydrogen ion loss between field and laboratory measurements has decreased significantly. Additional hydrogen ion is introduced after field, but before lab measurements in samples with ph values exceeding 5.8. Even though solutions with lower ph values lose more hydrogen ion between field and lab measurements, samples with higher ph values experience larger differences on a percentage basis. A change of several?eq/l for higher ph samples affects the sample ph more greatly than samples of lower ph, due to the logarithmic nature of the ph scale. Western sites generally measure higher median ph values. Overall, ph differences between field and laboratory measurements have decreased after the protocol change for the entire Network. Before the protocol change the median difference was 0.13 ph units, after the protocol change the median difference decreased to 0.04 ph units. Differences in hydrogen ion concentration between field and laboratory measurements are dependent upon the initial precipitation ph, which is dependent on concentration and ratios of neutralizing to acidic species. Physical parameters such snow, vegetation cover, wind conditions and source location control the amount of ions emitted into the atmosphere from natural sources. Time between collection and the precipitation event (and, time between field and lab analysis) influences the degree of change the sample may experience. Chemical changes occur as the precipitation sample equilibrates with the bucket. Delayed neutralization and microbial digestion of organic acids will change hydrogen ion concentration between field and laboratory measurements. Microbial population in the precipitation sample is temperature, hence season, dependent. Oxidation of SO 3 will contribute hydrogen ion to the solution, resulting in a lower laboratory ph value. However, concentration of SO 3 is low in the atmosphere. Delayed neutralization of particulates such as CaCO 3 and MgCO 3 will result in decreased hydrogen ion concentration. Seasonality will also contribute to hydrogen differences. Biological activity is especially high in the summer months, contributing high sulfate concentrations to the atmosphere during that time, resulting in lower precipitation ph. Differences in removal of acidic species by different precipitation regimes (snow versus rain) will also affect the sulfuric and nitric ratios. Conclusion: Field ph measurements are useful in determining the initial sample chemistry since laboratory measurements overestimate the ph in 67% of the precipitation samples due to chemical changes that occur between the two measurements. Increasing precipitation ph, due to reduced emissions of acidic species, will result in increasing discrepancies between field and laboratory ph measurements. NOS Minutes: Attachment 6
110 EPA External Audit Site Sketches Program Office Use NOS Minutes: Attachment 7
111 Progress completed 160 total to date about 40 completed per month all sketches for the 98/99 and 00/01 visits can be complete in about 8 months if work continues at the current pace we are spending about hours per week on this task CSU history files regarding remedial action are being evaluated NOS Minutes: Attachment 7
112 Methods time-consuming job involves correcting and integrating information from the hand-drawn ATS sketches, the table listing objects within 30 meters of the collector, and evaluating the photo suite a template is filled in with each sites unique characteristics in Adobe Illustrator 8 sketches are then reviewed for accuracy NOS Minutes: Attachment 7
113 Suggestions for future work (1) Send the draft sketches to site supervisors and operators for their confirmation of the information. (2) Once the information is confirmed, add the sketches to the NADP Web page, accompanying the GIS and photograph library. A text page listing descriptions of the obstructions would accompany the sketches. We are considering links to pictures of the obstructions in violation. NOS Minutes: Attachment 7
114 Suggestions for future work (cont.) 3) We'd like the contractor to have the instruments needed to measure accurately the azimuth, slope, and distance. (4) For the next round of site visits, we would provide these sketches to the contractor and we'd like the contractor to make updates, as needed. NOS Minutes: Attachment 7
115 MATERIALS THE PROGRAM OFFICE CURRENTLY RECEIVES FROM THE SITE AUDIT TEAM NOS Minutes: Attachment 7
116 NOS Minutes: Attachment 7
117 NADP / NTN SITE SKETCH DATA SHEET STATION ID: AK03 DATE 07/12/ 00 BY: T. JONES DISTANCE(m) AZIMUTH(deg) DESCRIPTION CORNER TREE LINE BELFORT CORNER TREE LINE AT TOP EDGE OF HILL CORNER FENCE MET. INSTRUMENT CORNER FENCE MET. INSTRUMENT MET. TOWER CORNER FENCE AND SHED CORNER OF SHED MET. TOWER WATER LINE BOTTOM HILL VENT POST WATER LINE BOTTOM HILL VENT POST MAN HOLE COVER VENT POST CORNER FENCE CORNER PUMP HOUSE SHED CORNER FENCE CORNER SHED CORNER SHED SATELLITE DISH TREE LINE SITE DATA.WK4 REV 0 DATA 3/16/98 FILE NAME AK03 DWG NOS Minutes: Attachment 7
118 EXAMPLES DRAFT SKETCHES ANNOTATED OBJECT LISTS HISTORIC REMEDIAL ACTION FILES NOS Minutes: Attachment 7
119 NOS Minutes: Attachment 7
120 NADP / NTN SITE SKETCH DATA SHEET STATION ID: AK03 DATE 07/12/00 DISTANCE AZIMUTH DESCRIPTION (m) (deg) CORNER TREE LINE BELFORT CORNER TREE LINE AT TOP EDGE OF HILL CORNER FENCE MET. INSTRUMENT CORNER FENCE MET. INSTRUMENT MET. TOWER CORNER FENCE AND SHED CORNER OF SHED MET. TOWER WATER LINE BOTTOM HILL VENT POST WATER LINE BOTTOM HILL VENT POST MAN HOLE COVER VENT POST CORNER FENCE CORNER PUMP HOUSE SHED CORNER FENCE CORNER SHED CORNER SHED SATELLITE DISH TREE LINE NOS Minutes: Attachment 7
121 VIOLATION ACTIONS Date Description Date Correction 9 Sep 86 slope >15% 9 Sep 86 no action/no exemption 9 Sep 86 >1m objects w/in 5m 9 Sep 86 no action/no exemption 9 Sep 86 veg > 0.6m 9 Sep 86 no action/no exemption 21 Jul 88 wb to S 17 Feb 92 exemption: prevailing weather from S 21 Jul 88 veg > 0.6m 19 Jun 89 informed site 15 Jul 91 trees and shrubs w/in 5m 12 Mar 92 veg removed summers of 1992 & Jul 91 fireweed > 0.6m (from photos) 12 Mar 92 requested trimming on regular basis 19 Jul Jul Jul 94 slope > 15% in several directions building (2.5m wide x 2.5m tall)10m to 213deg building (5m wide x 3.5m tall)23m to 180deg AK03 19 Jul Jul Jul 94 no action/no exemption no action/no exemption no action/no exemption NOS Minutes: Attachment 7
122 NOS Minutes: Attachment 7
123 NADP / NTN SITE SKETCH DATA SHEET STATION ID AR03 DATE 12/06/99 DISTANCE AZIMUTH DESCRIPTION (m) (deg) TREE (45 DEGREE VIOLATION) TREE LINE FENCE CORNER TREE LINE TREE LINE TREE (45 DEGREE VIOLATION) TREE (45 DEGREE VIOLATION) TREE LINE FENCE CORNER MET. INSTRUMENT TREE (45 DEGREE VIOLATION) TREE LINE FENCE CORNER TREE LINE TREE LINE BELFORT RAIN GAUGE TREE LINE FENCE CORNER TREE (45 DEGREE VIOLATION) TREE (45 DEGREE VIOLATION) TREE (45 DEGREE VIOLATION) TREE (45 DEGREE VIOLATION) NOS Minutes: Attachment 7
124 VIOLATION ACTIONS Date Description Date Correction 29 Aug 94 Arkadelphia (10,000) ~4km to SE 29 Aug 94 no action/no exemption 29 Aug 94 wet bucket to WNW, (295deg) 29 Aug 94 no action/no exemption AR03 NOS Minutes: Attachment 7
125 NOS Minutes: Attachment 7
126 NADP / NTN SITE SKETCH DATA SHEET STATION ID AR27 DATE 03/25/99 DISTANCE AZIMUTH DESCRIPTION (m) (deg) POST CORNER PLOWED FIELD CORNER 3 FOOT CYCLONE FENCE BELFORT CORNER 3 FOOT CYCLONE FENCE EDGE PLOWED FIELD CORNER 4 FOOT CYCLONE FENCE TOWER MET INSTRUMENT CORNER 4 FOOT CYCLONE FENCE TREE LINE CORNER 3 FOOT CYCLONE FENCE TREE LINE CORNER 3 FOOT CYCLONE FENCE CORNER TREE LINE POST NOS Minutes: Attachment 7
127 VIOLATION ACTIONS Date Description Date Correction 26 Aug 94 Fayetteville, AR (42,000) ~1km to S 26 Aug 94 no action/no exemption 26 Aug 94 Springdale, AR (30,000) ~6km to NE 26 Aug 94 no action/no exemption AR27 NOS Minutes: Attachment 7
128 NOS Minutes: Attachment 7
129 NOS Minutes: Attachment 7
130 NADP / NTN SITE SKETCH DATA SHEET STATION ID CO00 DATE 4/21/99 DISTANCE AZIMUTH DESCRIPTION (m) (deg) BELFORT RAIN GAUGE NOS Minutes: Attachment 7
131 Date 16 Sep Jun Jun Jun 94 VIOLATION Description Alamosa (~10,000) ~ 2km to N wet bucket to NW (304 deg) parking lot ~100m to E, for airport employees airplanes taxi ~100m to SE,E,NE Date 16 Sep 86 3 Jul Jun Jun 94 ACTIONS Correction no action/no exemption Exemption: minor deviation/toward predominant weather direction no action/no exemption no action/no exemption CO00 NOS Minutes: Attachment 7
132 NOS Minutes: Attachment 7
133 NADP / NTN SITE SKETCH DATA SHEET STATION ID CO08 DATE 07/14/99 DISTANCE AZIMUTH DESCRIPTION (m) (deg) TREE LINE CORNER FENCE (1 METER BARBED WIRE) POLE BELFORT CORNER FENCE (1 METER BARBED WIRE) TREE LINE TREE LINE CORNER FENCE (1 METER BARBED WIRE) CORNER FENCE (1 METER BARBED WIRE) TREE LINE TREE LINE NOS Minutes: Attachment 7
134 Date 3 Aug 92 3 Aug 92 3 Aug 92 VIOLATION Description grass and flowers > 0.6m trees in 45deg cone (9.1m tall) to N & E grazing (cows) w/in 5m to NSEW Date 19 May Jun 93 5 May 94 ACTIONS Correction to cut annual veg <2', at least w/in 5m removed 1 spruce & 5-6 aspen Exemption: cows only present 1 mon/every other year; low density VIOLATION ACTIONS Date Description Date Correction 14 Aug m wire fence 2.1m to SE & 1.9m to NW 14 Aug 95 no action/no exemption 14 Aug 95 grasses 1.05m tall.5m in all dir 14 Aug 95 no action/no exemption CO08 NOS Minutes: Attachment 7
135 NOS Minutes: Attachment 7
136 NADP / NTN SITE SKETCH DATA SHEET STATION ID CO96 DATE 04/20/99 DISTANCE AZIMUTH DESCRIPTION (m) (deg) TREE ELECTRICAL POLE TREE TREE (NEAR VIOLATION) TREE (LINE) TREE (LINE) TREE (LINE) TREE (45 DEGREE VIOLATION) TREE TREE (LINE) MET. INSTRUMENT TREE TREE (NEAR VIOLATION) TREE TREE (NEAR VIOLATION) BELFORT RAIN GAUGE TREE (NEAR VIOLATION) TREE (LINE) TREE NOS Minutes: Attachment 7
137 Date 7 Aug Jun Jun 94 VIOLATION Description grazing (sheep) w/in 20m slope >15deg w/in 30m 6 trees with 45 deg violation Date 20 Apr Jun Jun 94 ACTIONS Correction Exemption: sheep are seldom in area; low densi no action/no exemption no action/no exemption CO96 NOS Minutes: Attachment 7
138 NOS Minutes: Attachment 7
139 NADP / NTN SITE SKETCH DATA SHEET STATION ID FL14 DATE 02/02/00 DISTANCE AZIMUTH DESCRIPTION (m) (deg) POST ROAD ROAD STICK GAGE RAIN GAGE ROAD POST NOS Minutes: Attachment 7
140 VIOLATION ACTIONS Date Description Date Correction 4 Feb 85 grazing w/in 20m 4 Feb 85 no action/no exemption 24 Feb 87 slope >15%, veg > 2' 19 Jul 89 informed site FL14 NOS Minutes: Attachment 7
141 NOS Minutes: Attachment 7
142 NADP / NTN SITE SKETCH DATA SHEET STATION ID FL23 DATE 02/01/00 DISTANCE AZIMUTH DESCRIPTION (m) (deg) CORNER SHELTER CORNER SHELTER MET TOWER (45 DEGREE VIOLATION) BELFORT MET INSTRUMENT MET INSTRUMENT POST MET TOWER (45 DEGREE VIOLATION) NOS Minutes: Attachment 7
143 New Site - No Previous Site Reviews FL23 NOS Minutes: Attachment 7
144 NOS Minutes: Attachment 7
145 NADP / NTN SITE SKETCH DATA SHEET STATION ID FL41 DATE 02/02/98 DISTANCE AZIMUTH DESCRIPTION (m) (deg) ROAD TREE TREE TREE BELFORT RAIN GAGE SHED TREE WATER PUMP OLD RAIN GAGE STICK GAGE NOS Minutes: Attachment 7
146 VIOLATION ACTIONS Date Description Date Correction 27 Feb 87 veg > 0.6m 3 May 89 informed site 23 Feb 90 veg > 0.6m to W & E 4 Jun 90 informed site Date 15 Mar Mar 95 VIOLATION Description road ~5m to W, minimal traffic shed (3.1m wide x 2.7m tall) 20.6m to NE Date 15 Mar Mar 95 ACTIONS Correction no action/no exemption no action/no exemption FL41 NOS Minutes: Attachment 7
147 NOS Minutes: Attachment 7
148 Inclement Weather - No Site Data Sheet Report KY03 NOS Minutes: Attachment 7
149 VIOLATION ACTIONS Date Description Date Correction 3 Oct 85 wb to N 3 Oct 85 reoriented sensor and coll 3 Oct 85 slope >15% 3 Oct 85 no action/no exemption 10 Aug 88 wb to N 21 Jun 89 site moved 10 Aug 88 pasture 2m away 21 Jun 89 informed site 10 Aug 88 rg/coll sep 3.9m 21 Jun 89 informed site KY03 NOS Minutes: Attachment 7
150 NOS Minutes: Attachment 7
151 NADP / NTN SITE SKETCH DATA SHEET STATION ID ME00 DATE 06/16/00 DISTANCE AZIMUTH DESCRIPTION (m) (deg) CORNER OF CORROSION TEST STAND CORNER OF CORROSION TEST STAND CORNER OF NOAA BUILDING BELFORT POST MET. INSTRUMENT MET. INSTRUMENT STAND CORNER OF GENERATOR SHED GENERATOR FUEL TANK OBSERVATORY WET TRANSFORMER SIGN CORNER 3' CYCLONE FENCE CORNER 3' CYCLONE FENCE CORNER 3' CYCLONE FENCE CORNER 3' CYCLONE FENCE MOW LINE MOW LINE CORNER ASPHALT CORNER ASPHALT CORNER RADAR BUILDING CORNER RADAR BUILDING CORNER RADAR BUILDING CORNER ASPHALT ASPHALT EDGE NOS Minutes: Attachment 7
152 Date 25 Jul Jul Jul Jul Jul 92 VIOLATION Description Caribou nearby/air airport veg > 0.6m fuel & aircraft stored w/in 40m to E aircraft taxi w/in 100m (~1-7 aircraft/week) road 40m to E, ~30 cars/hr, Main Street Date 20 Jul Jan 90 5 May 94 5 May 94 5 May 94 ACTIONS Correction informed site informed site Exemption: representative of region (see Artz & Rolph, 1987) Exemption: representative of region (see Artz & Rolph, 1987) Exemption: representative of region (see Artz & Rolph, 1987) ME00 NOS Minutes: Attachment 7
153 NOS Minutes: Attachment 7
154 NOS Minutes: Attachment 7
155 NADP / NTN SITE SKETCH DATA SHEET STATION ID VA28 DATE 04/27/00 DISTANCE AZIMUTH DESCRIPTION (m) (deg) FENCE CORNER ACM COLLECTOR WATER COLLECTORS TOWER BELFORT OZONE GAGE TOWER CORNER SHED CORNER SHED CORNER SHED TIPPING BUCKET GAGE FENCE CORNER FENCE CORNER NOS Minutes: Attachment 7
156 Date 11 Dec Mar Nov Jul 94 VIOLATION Description met tower in 45deg cone lightning rod in 45deg (10mtall)to SSE 10m lightning rod in 60deg cone (10m tall) to SSE grasses over 0.61m tall Date 19 Jan Jun Mar Jul 94 ACTIONS Correction informed site Exemption: narrow diameter, barely in 45 deg. cone removed ranger cut vegetation during site visit VA28 NOS Minutes: Attachment 7
157 Suggestions for future work (1) Send the draft sketches to site supervisors and operators for their confirmation of the information. (2) Once the information is confirmed, add the sketches to the NADP Web page, accompanying the GIS and photograph library. A text page listing descriptions of the obstructions would accompany the sketches. We are considering links to pictures of the obstructions in violation. NOS Minutes: Attachment 7
158 Suggestions for future work (cont.) 3) We'd like the contractor to have the instruments needed to measure accurately the azimuth, slope, and distance. (4) For the next round of site visits, we would provide these sketches to the contractor and we'd like the contractor to make updates, as needed. NOS Minutes: Attachment 7
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