diff --git a/Bioindustrial-Park b/Bioindustrial-Park
index d4461cb9..71005fa3 160000
--- a/Bioindustrial-Park
+++ b/Bioindustrial-Park
@@ -1 +1 @@
-Subproject commit d4461cb9f0a2286bcdfbe41dc6b63b8f83a5685f
+Subproject commit 71005fa3fa7b4c12d09f18485777f2371df22925
diff --git a/How2STEAM b/How2STEAM
index 5b53b835..b90d7ac4 160000
--- a/How2STEAM
+++ b/How2STEAM
@@ -1 +1 @@
-Subproject commit 5b53b8354163be8179dbebd98f43764f3d405c74
+Subproject commit b90d7ac44f125957430541419605bef4b353cf9f
diff --git a/biosteam/plots/plots.py b/biosteam/plots/plots.py
index b96769ff..93d07ad6 100644
--- a/biosteam/plots/plots.py
+++ b/biosteam/plots/plots.py
@@ -1177,7 +1177,7 @@ def plot_contour_single_metric(
         "Z.shape must be (X, Y, M, N), where (X, Y) is the shape of both X and Y"
     )
     fig, axes, ax_colorbar = contour_subplots(nrows, ncols, single_colorbar=True)
-    if styleaxiskw is None: styleaxiskw = {}
+    if styleaxiskw is None: styleaxiskw = dict(xtick0=False, ytick0=False)
     cps = np.zeros([nrows, ncols], dtype=object)
     linecolor = np.array([*c.neutral_shade.RGBn, 0.1])
     other_axes = []
@@ -1207,7 +1207,16 @@ def plot_contour_single_metric(
                 )
                 for i in clabels: i.set_rotation(0)
             cps[row, col] = cp
-            dct = style_axis(ax, xticks, yticks, xticklabels, yticklabels, **styleaxiskw)
+            
+            if row == nrows - 1 and not styleaxiskw.get('ytick0', True):
+                sak = styleaxiskw.copy()
+                sak['ytick0'] = True
+            else:
+                sak = styleaxiskw
+            if col == 0 and not styleaxiskw.get('xtick0', True):
+                sak = sak.copy()
+                sak['xtick0'] = True
+            dct = style_axis(ax, xticks, yticks, xticklabels, yticklabels, **sak)
             other_axes.append(dct)
     cb = metric_bar.colorbar(fig, ax_colorbar, cp, fraction=0.5)
     plt.sca(ax_colorbar)
diff --git a/docs/tutorial/Glacial_acetic_acid_separation.nblink b/docs/tutorial/Glacial_acetic_acid_separation.nblink
new file mode 100644
index 00000000..49d73e37
--- /dev/null
+++ b/docs/tutorial/Glacial_acetic_acid_separation.nblink
@@ -0,0 +1,6 @@
+{
+  "path": "../../How2STEAM/case_studies/Glacial_acetic_acid_separation.ipynb",
+  "extra-media": [
+      "../../How2STEAM/images/GAA.png"
+  ]
+}
\ No newline at end of file
diff --git a/docs/tutorial/index.txt b/docs/tutorial/index.txt
index 04938ec4..ae0e8d6e 100644
--- a/docs/tutorial/index.txt
+++ b/docs/tutorial/index.txt
@@ -66,4 +66,4 @@ User guide
           :caption: Case studies
           
           Aerated_bioreactor_design
-          
+          Glacial_acetic_acid_separation