Plot_Sheet_Big_Creek.pdf

USDA - FOREST SERVICE

THINNING INSPECTION PLOT FORM R4-2400-4 (2/99)

ID CONTRACT CONTRACT SPECIFICATIONS

STAND SUM.

FOREST Shasta Trinity CONTRACTOR ACCEPT.MIN/MAX TC/AC 75 TO 135 TARGET ACTUAL

DISTRICT SFMU NUMBER PRIORITY SP. PREF. SP,DF,PP IC TREES LEFT/AC

INSPECTOR ITEM PLOT SIZE 1/20 CATEGORY "C"/AC/

DATE SUB-ITEM ACCEP. TREES/PLOT 4 TO 6 **TREES/AC IGNORED

REMARKS COMP/STD(S) VARIATION OF SPACING 25 % OR ± 5 FT TREES/AC. BELOW

ACRES SPECIES IGNORED** Oak, Madrone MIN.HT

WORK ACCOMPLISHED % MIN. CUT TREE HEIGHT None FT

CONTRACT TIME REMAINING % MAX. CUT TREE DBH. 10 IN TOTAL TREES/ ACRES

ACCEP. CAT "C" PER AC.

Plot No.

(1)

TREE EVALUATION

(see back) (2)

TREES LEFT:

(INCL.SAT., TREES

ABOVE MAX DBH. &

EXCLUDES**)

CREDIT

NONSTK.

SPOTS

SURPLUS

S2 AND

CAT. "A"

IMPROPER LEAVE

TREE SELECTION

UNCORRECTABLE

CAT. "B"

EXCESS TREES

CORRECT ABLE

CAT. "C"

CORRECTABLE

S1,S2 (3)

S3, S4 (4)

(5)

A1,A2, A3 (6)

A4,A5 (7)

B, B1 (8)

C1-C7 (9)

TOTAL ALL PLOTS

TOTAL PER ACRE

Quality Thinning Calculations: NOTES: 1. ** = Species of trees ignored in thinning activity.

1.00 - [ COL. (6) + COL. (7) + COL. (8) ] x 100 = % Quality Thinning

2. If species of trees is needed, record species for each tree tallied in Column (2).

COL. (3) + COL. (4)

TOTAL PER ACRE CALCULATIONS: TREES PER ACRE = "TOTAL ALL PLOTS" in column divided by total of plots, then multiplied by reciprocal of plot size.

TREE EVALUATION CODING AND INSTRUCTIONS

ACCEPTABLE TREES and CREDITS FOR NON STOCKED SPOTS (3-5) CATEGORY "C" TREES (9)

S1 - Meets all specifications and species preference C1 - Not completely severed from stump S2 - Tree meeting maximum d.b.h. cut limit C2 - Hand-up tree S3 - Credit leave tree due to insufficient origianl stocking C3 - High stump S4 - Credit for missing tree cut due to insects and disease C4 - Tree left with excess damage C5 - Tree left fith excess disease C6 - Tree not girdled C7 - Tree improperly girdled

CATEGORY "A" TREES (6) AND (7)

A1 - Improper spacing relationship or too many cut A2 - Tree cut exceeds the maximum d.b.h. cut limit A3 - Leave tree damaged excessively by salvage or felling operations A4 - Improper tree selection (does not meet specification) A5 - Wrong tree cut

CATEGORY "B" TREES (8)

B - Improper spacing or too few trees cut (Excess Trees) B1 - Stump with live limbs

INSTRUCTIONS: 1. The sum of Columns (3) and (4) cannot exceed maximum acceptable trees per plot.

2. If the total of Col. (3) and Col. (4) is less than the minimum acceptable trees per lot and there are no improperly cut trees (Col. 6 and 7 -Category A), Column 4 must be increased to the extent the total of Col. ((3) and Col. (4) equals the average number of acceptable trees per plot. If trees are improperly cut (Category A) the total of Columns 3 and 4 must not exceed the sum of maximum acceptable trees per plot minus the n;umber of Category A trees (Columns 6 and 7).

ADDITIONAL NOTES: